Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
4de283e4 | 32 | #include "dwarf2read.h" |
d55e5aa6 TT |
33 | #include "dwarf-index-cache.h" |
34 | #include "dwarf-index-common.h" | |
f4382c45 | 35 | #include "dwarf2/leb.h" |
4de283e4 TT |
36 | #include "bfd.h" |
37 | #include "elf-bfd.h" | |
38 | #include "symtab.h" | |
39 | #include "gdbtypes.h" | |
40 | #include "objfiles.h" | |
d55e5aa6 | 41 | #include "dwarf2.h" |
4de283e4 TT |
42 | #include "buildsym.h" |
43 | #include "demangle.h" | |
44 | #include "gdb-demangle.h" | |
4de283e4 TT |
45 | #include "filenames.h" /* for DOSish file names */ |
46 | #include "macrotab.h" | |
47 | #include "language.h" | |
48 | #include "complaints.h" | |
d55e5aa6 TT |
49 | #include "dwarf2expr.h" |
50 | #include "dwarf2loc.h" | |
4de283e4 TT |
51 | #include "cp-support.h" |
52 | #include "hashtab.h" | |
53 | #include "command.h" | |
d55e5aa6 | 54 | #include "gdbcmd.h" |
4de283e4 TT |
55 | #include "block.h" |
56 | #include "addrmap.h" | |
57 | #include "typeprint.h" | |
58 | #include "psympriv.h" | |
4de283e4 | 59 | #include "c-lang.h" |
d55e5aa6 | 60 | #include "go-lang.h" |
4de283e4 TT |
61 | #include "valprint.h" |
62 | #include "gdbcore.h" /* for gnutarget */ | |
63 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
64 | #include "gdb_bfd.h" |
65 | #include "f-lang.h" | |
66 | #include "source.h" | |
4de283e4 | 67 | #include "build-id.h" |
d55e5aa6 | 68 | #include "namespace.h" |
268a13a5 TT |
69 | #include "gdbsupport/function-view.h" |
70 | #include "gdbsupport/gdb_optional.h" | |
71 | #include "gdbsupport/underlying.h" | |
268a13a5 | 72 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 73 | #include "filename-seen-cache.h" |
b32b108a | 74 | #include "producer.h" |
4de283e4 | 75 | #include <fcntl.h> |
4de283e4 | 76 | #include <algorithm> |
4de283e4 | 77 | #include <unordered_map> |
268a13a5 | 78 | #include "gdbsupport/selftest.h" |
c9317f21 | 79 | #include "rust-lang.h" |
268a13a5 | 80 | #include "gdbsupport/pathstuff.h" |
437afbb8 | 81 | |
73be47f5 DE |
82 | /* When == 1, print basic high level tracing messages. |
83 | When > 1, be more verbose. | |
b4f54984 DE |
84 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
85 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 86 | |
d97bc12b | 87 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 88 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 89 | |
27e0867f DE |
90 | /* When non-zero, dump line number entries as they are read in. */ |
91 | static unsigned int dwarf_line_debug = 0; | |
92 | ||
491144b5 CB |
93 | /* When true, cross-check physname against demangler. */ |
94 | static bool check_physname = false; | |
900e11f9 | 95 | |
491144b5 CB |
96 | /* When true, do not reject deprecated .gdb_index sections. */ |
97 | static bool use_deprecated_index_sections = false; | |
481860b3 | 98 | |
5bfd760d | 99 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 100 | |
f1e6e072 TT |
101 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
102 | ||
103 | static int dwarf2_locexpr_index; | |
104 | static int dwarf2_loclist_index; | |
105 | static int dwarf2_locexpr_block_index; | |
106 | static int dwarf2_loclist_block_index; | |
107 | ||
3f563c84 PA |
108 | /* An index into a (C++) symbol name component in a symbol name as |
109 | recorded in the mapped_index's symbol table. For each C++ symbol | |
110 | in the symbol table, we record one entry for the start of each | |
111 | component in the symbol in a table of name components, and then | |
112 | sort the table, in order to be able to binary search symbol names, | |
113 | ignoring leading namespaces, both completion and regular look up. | |
114 | For example, for symbol "A::B::C", we'll have an entry that points | |
115 | to "A::B::C", another that points to "B::C", and another for "C". | |
116 | Note that function symbols in GDB index have no parameter | |
117 | information, just the function/method names. You can convert a | |
118 | name_component to a "const char *" using the | |
119 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
120 | ||
121 | struct name_component | |
122 | { | |
123 | /* Offset in the symbol name where the component starts. Stored as | |
124 | a (32-bit) offset instead of a pointer to save memory and improve | |
125 | locality on 64-bit architectures. */ | |
126 | offset_type name_offset; | |
127 | ||
128 | /* The symbol's index in the symbol and constant pool tables of a | |
129 | mapped_index. */ | |
130 | offset_type idx; | |
131 | }; | |
132 | ||
44ed8f3e PA |
133 | /* Base class containing bits shared by both .gdb_index and |
134 | .debug_name indexes. */ | |
135 | ||
136 | struct mapped_index_base | |
137 | { | |
22ca247e TT |
138 | mapped_index_base () = default; |
139 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
140 | ||
44ed8f3e PA |
141 | /* The name_component table (a sorted vector). See name_component's |
142 | description above. */ | |
143 | std::vector<name_component> name_components; | |
144 | ||
145 | /* How NAME_COMPONENTS is sorted. */ | |
146 | enum case_sensitivity name_components_casing; | |
147 | ||
148 | /* Return the number of names in the symbol table. */ | |
149 | virtual size_t symbol_name_count () const = 0; | |
150 | ||
151 | /* Get the name of the symbol at IDX in the symbol table. */ | |
152 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
153 | ||
154 | /* Return whether the name at IDX in the symbol table should be | |
155 | ignored. */ | |
156 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
157 | { | |
158 | return false; | |
159 | } | |
160 | ||
161 | /* Build the symbol name component sorted vector, if we haven't | |
162 | yet. */ | |
163 | void build_name_components (); | |
164 | ||
165 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
166 | possible matches for LN_NO_PARAMS in the name component | |
167 | vector. */ | |
168 | std::pair<std::vector<name_component>::const_iterator, | |
169 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
170 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
171 | enum language lang) const; | |
44ed8f3e PA |
172 | |
173 | /* Prevent deleting/destroying via a base class pointer. */ | |
174 | protected: | |
175 | ~mapped_index_base() = default; | |
176 | }; | |
177 | ||
9291a0cd TT |
178 | /* A description of the mapped index. The file format is described in |
179 | a comment by the code that writes the index. */ | |
fc898b42 | 180 | struct mapped_index final : public mapped_index_base |
9291a0cd | 181 | { |
f00a2de2 PA |
182 | /* A slot/bucket in the symbol table hash. */ |
183 | struct symbol_table_slot | |
184 | { | |
185 | const offset_type name; | |
186 | const offset_type vec; | |
187 | }; | |
188 | ||
559a7a62 | 189 | /* Index data format version. */ |
3063847f | 190 | int version = 0; |
559a7a62 | 191 | |
f00a2de2 PA |
192 | /* The address table data. */ |
193 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 194 | |
3876f04e | 195 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 196 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 197 | |
9291a0cd | 198 | /* A pointer to the constant pool. */ |
3063847f | 199 | const char *constant_pool = nullptr; |
3f563c84 | 200 | |
44ed8f3e PA |
201 | bool symbol_name_slot_invalid (offset_type idx) const override |
202 | { | |
203 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 204 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 205 | } |
5c58de74 | 206 | |
3f563c84 PA |
207 | /* Convenience method to get at the name of the symbol at IDX in the |
208 | symbol table. */ | |
44ed8f3e | 209 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 210 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 211 | |
44ed8f3e PA |
212 | size_t symbol_name_count () const override |
213 | { return this->symbol_table.size (); } | |
9291a0cd TT |
214 | }; |
215 | ||
927aa2e7 JK |
216 | /* A description of the mapped .debug_names. |
217 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 218 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 219 | { |
ed2dc618 SM |
220 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
221 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
222 | {} | |
223 | ||
224 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
225 | bfd_endian dwarf5_byte_order; |
226 | bool dwarf5_is_dwarf64; | |
227 | bool augmentation_is_gdb; | |
228 | uint8_t offset_size; | |
229 | uint32_t cu_count = 0; | |
230 | uint32_t tu_count, bucket_count, name_count; | |
231 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
232 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
233 | const gdb_byte *name_table_string_offs_reordered; | |
234 | const gdb_byte *name_table_entry_offs_reordered; | |
235 | const gdb_byte *entry_pool; | |
236 | ||
237 | struct index_val | |
238 | { | |
239 | ULONGEST dwarf_tag; | |
240 | struct attr | |
241 | { | |
242 | /* Attribute name DW_IDX_*. */ | |
243 | ULONGEST dw_idx; | |
244 | ||
245 | /* Attribute form DW_FORM_*. */ | |
246 | ULONGEST form; | |
247 | ||
248 | /* Value if FORM is DW_FORM_implicit_const. */ | |
249 | LONGEST implicit_const; | |
250 | }; | |
251 | std::vector<attr> attr_vec; | |
252 | }; | |
253 | ||
254 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
255 | ||
256 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
257 | |
258 | /* Implementation of the mapped_index_base virtual interface, for | |
259 | the name_components cache. */ | |
260 | ||
261 | const char *symbol_name_at (offset_type idx) const override | |
262 | { return namei_to_name (idx); } | |
263 | ||
264 | size_t symbol_name_count () const override | |
265 | { return this->name_count; } | |
927aa2e7 JK |
266 | }; |
267 | ||
cd4fb1b2 | 268 | /* See dwarf2read.h. */ |
ed2dc618 | 269 | |
cd4fb1b2 | 270 | dwarf2_per_objfile * |
ed2dc618 SM |
271 | get_dwarf2_per_objfile (struct objfile *objfile) |
272 | { | |
5bfd760d | 273 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 274 | } |
c906108c | 275 | |
251d32d9 | 276 | /* Default names of the debugging sections. */ |
c906108c | 277 | |
233a11ab CS |
278 | /* Note that if the debugging section has been compressed, it might |
279 | have a name like .zdebug_info. */ | |
280 | ||
9cdd5dbd DE |
281 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
282 | { | |
251d32d9 TG |
283 | { ".debug_info", ".zdebug_info" }, |
284 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
285 | { ".debug_line", ".zdebug_line" }, | |
286 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 287 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 288 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 289 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 290 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 291 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 292 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 293 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 294 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 295 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 296 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
297 | { ".debug_frame", ".zdebug_frame" }, |
298 | { ".eh_frame", NULL }, | |
24d3216f | 299 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
300 | { ".debug_names", ".zdebug_names" }, |
301 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 302 | 23 |
251d32d9 | 303 | }; |
c906108c | 304 | |
80626a55 | 305 | /* List of DWO/DWP sections. */ |
3019eac3 | 306 | |
80626a55 | 307 | static const struct dwop_section_names |
3019eac3 DE |
308 | { |
309 | struct dwarf2_section_names abbrev_dwo; | |
310 | struct dwarf2_section_names info_dwo; | |
311 | struct dwarf2_section_names line_dwo; | |
312 | struct dwarf2_section_names loc_dwo; | |
43988095 | 313 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
314 | struct dwarf2_section_names macinfo_dwo; |
315 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
316 | struct dwarf2_section_names str_dwo; |
317 | struct dwarf2_section_names str_offsets_dwo; | |
318 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
319 | struct dwarf2_section_names cu_index; |
320 | struct dwarf2_section_names tu_index; | |
3019eac3 | 321 | } |
80626a55 | 322 | dwop_section_names = |
3019eac3 DE |
323 | { |
324 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
325 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
326 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
327 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 328 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
329 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
330 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
331 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
332 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
333 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
334 | { ".debug_cu_index", ".zdebug_cu_index" }, |
335 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
336 | }; |
337 | ||
c906108c SS |
338 | /* local data types */ |
339 | ||
107d2387 AC |
340 | /* The data in a compilation unit header, after target2host |
341 | translation, looks like this. */ | |
c906108c | 342 | struct comp_unit_head |
a738430d | 343 | { |
c764a876 | 344 | unsigned int length; |
a738430d | 345 | short version; |
a738430d MK |
346 | unsigned char addr_size; |
347 | unsigned char signed_addr_p; | |
9c541725 | 348 | sect_offset abbrev_sect_off; |
57349743 | 349 | |
a738430d MK |
350 | /* Size of file offsets; either 4 or 8. */ |
351 | unsigned int offset_size; | |
57349743 | 352 | |
a738430d MK |
353 | /* Size of the length field; either 4 or 12. */ |
354 | unsigned int initial_length_size; | |
57349743 | 355 | |
43988095 JK |
356 | enum dwarf_unit_type unit_type; |
357 | ||
a738430d MK |
358 | /* Offset to the first byte of this compilation unit header in the |
359 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 360 | sect_offset sect_off; |
57349743 | 361 | |
d00adf39 DE |
362 | /* Offset to first die in this cu from the start of the cu. |
363 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 364 | cu_offset first_die_cu_offset; |
43988095 | 365 | |
a084a2a6 AT |
366 | |
367 | /* 64-bit signature of this unit. For type units, it denotes the signature of | |
368 | the type (DW_UT_type in DWARF 4, additionally DW_UT_split_type in DWARF 5). | |
369 | Also used in DWARF 5, to denote the dwo id when the unit type is | |
370 | DW_UT_skeleton or DW_UT_split_compile. */ | |
43988095 JK |
371 | ULONGEST signature; |
372 | ||
373 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 374 | cu_offset type_cu_offset_in_tu; |
a738430d | 375 | }; |
c906108c | 376 | |
3da10d80 KS |
377 | /* Type used for delaying computation of method physnames. |
378 | See comments for compute_delayed_physnames. */ | |
379 | struct delayed_method_info | |
380 | { | |
381 | /* The type to which the method is attached, i.e., its parent class. */ | |
382 | struct type *type; | |
383 | ||
384 | /* The index of the method in the type's function fieldlists. */ | |
385 | int fnfield_index; | |
386 | ||
387 | /* The index of the method in the fieldlist. */ | |
388 | int index; | |
389 | ||
390 | /* The name of the DIE. */ | |
391 | const char *name; | |
392 | ||
393 | /* The DIE associated with this method. */ | |
394 | struct die_info *die; | |
395 | }; | |
396 | ||
e7c27a73 DJ |
397 | /* Internal state when decoding a particular compilation unit. */ |
398 | struct dwarf2_cu | |
399 | { | |
fcd3b13d SM |
400 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
401 | ~dwarf2_cu (); | |
402 | ||
403 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
404 | ||
c24bdb02 KS |
405 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
406 | Create the set of symtabs used by this TU, or if this TU is sharing | |
407 | symtabs with another TU and the symtabs have already been created | |
408 | then restore those symtabs in the line header. | |
409 | We don't need the pc/line-number mapping for type units. */ | |
410 | void setup_type_unit_groups (struct die_info *die); | |
411 | ||
412 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
413 | buildsym_compunit constructor. */ | |
414 | struct compunit_symtab *start_symtab (const char *name, | |
415 | const char *comp_dir, | |
416 | CORE_ADDR low_pc); | |
417 | ||
418 | /* Reset the builder. */ | |
419 | void reset_builder () { m_builder.reset (); } | |
420 | ||
d00adf39 | 421 | /* The header of the compilation unit. */ |
fcd3b13d | 422 | struct comp_unit_head header {}; |
e142c38c | 423 | |
d00adf39 | 424 | /* Base address of this compilation unit. */ |
fcd3b13d | 425 | CORE_ADDR base_address = 0; |
d00adf39 DE |
426 | |
427 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 428 | int base_known = 0; |
d00adf39 | 429 | |
e142c38c | 430 | /* The language we are debugging. */ |
fcd3b13d SM |
431 | enum language language = language_unknown; |
432 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 433 | |
fcd3b13d | 434 | const char *producer = nullptr; |
b0f35d58 | 435 | |
c24bdb02 | 436 | private: |
804d2729 TT |
437 | /* The symtab builder for this CU. This is only non-NULL when full |
438 | symbols are being read. */ | |
c24bdb02 | 439 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 440 | |
c24bdb02 | 441 | public: |
e142c38c DJ |
442 | /* The generic symbol table building routines have separate lists for |
443 | file scope symbols and all all other scopes (local scopes). So | |
444 | we need to select the right one to pass to add_symbol_to_list(). | |
445 | We do it by keeping a pointer to the correct list in list_in_scope. | |
446 | ||
447 | FIXME: The original dwarf code just treated the file scope as the | |
448 | first local scope, and all other local scopes as nested local | |
449 | scopes, and worked fine. Check to see if we really need to | |
450 | distinguish these in buildsym.c. */ | |
fcd3b13d | 451 | struct pending **list_in_scope = nullptr; |
e142c38c | 452 | |
b64f50a1 JK |
453 | /* Hash table holding all the loaded partial DIEs |
454 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 455 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
456 | |
457 | /* Storage for things with the same lifetime as this read-in compilation | |
458 | unit, including partial DIEs. */ | |
fcd3b13d | 459 | auto_obstack comp_unit_obstack; |
72bf9492 | 460 | |
ae038cb0 DJ |
461 | /* When multiple dwarf2_cu structures are living in memory, this field |
462 | chains them all together, so that they can be released efficiently. | |
463 | We will probably also want a generation counter so that most-recently-used | |
464 | compilation units are cached... */ | |
fcd3b13d | 465 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 466 | |
69d751e3 | 467 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
468 | struct dwarf2_per_cu_data *per_cu; |
469 | ||
470 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 471 | int last_used = 0; |
ae038cb0 | 472 | |
b64f50a1 JK |
473 | /* A hash table of DIE cu_offset for following references with |
474 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 475 | htab_t die_hash = nullptr; |
10b3939b DJ |
476 | |
477 | /* Full DIEs if read in. */ | |
fcd3b13d | 478 | struct die_info *dies = nullptr; |
10b3939b DJ |
479 | |
480 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
481 | units referenced by this one. Only set during full symbol processing; | |
482 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 483 | htab_t dependencies = nullptr; |
10b3939b | 484 | |
cb1df416 | 485 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 486 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
487 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
488 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
489 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
490 | to the line header as long as this DIE is being processed. See | |
491 | process_die_scope. */ | |
fcd3b13d | 492 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 493 | |
3da10d80 KS |
494 | /* A list of methods which need to have physnames computed |
495 | after all type information has been read. */ | |
c89b44cd | 496 | std::vector<delayed_method_info> method_list; |
3da10d80 | 497 | |
96408a79 | 498 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 499 | htab_t call_site_htab = nullptr; |
96408a79 | 500 | |
034e5797 DE |
501 | /* Non-NULL if this CU came from a DWO file. |
502 | There is an invariant here that is important to remember: | |
503 | Except for attributes copied from the top level DIE in the "main" | |
504 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 505 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
506 | Either there isn't a DWO file (in which case this is NULL and the point |
507 | is moot), or there is and either we're not going to read it (in which | |
508 | case this is NULL) or there is and we are reading it (in which case this | |
509 | is non-NULL). */ | |
fcd3b13d | 510 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 511 | |
18a8505e | 512 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 513 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 514 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 515 | |
18a8505e | 516 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 517 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 518 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
519 | be used without needing to know whether DWO files are in use or not. |
520 | N.B. This does not apply to DW_AT_ranges appearing in | |
521 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
522 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 523 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 524 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 525 | ULONGEST ranges_base = 0; |
2e3cf129 | 526 | |
c9317f21 TT |
527 | /* When reading debug info generated by older versions of rustc, we |
528 | have to rewrite some union types to be struct types with a | |
529 | variant part. This rewriting must be done after the CU is fully | |
530 | read in, because otherwise at the point of rewriting some struct | |
531 | type might not have been fully processed. So, we keep a list of | |
532 | all such types here and process them after expansion. */ | |
533 | std::vector<struct type *> rust_unions; | |
534 | ||
18a8505e AT |
535 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
536 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
537 | value is often implicit and is the size of the header of | |
538 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
539 | gdb::optional<ULONGEST> str_offsets_base; | |
540 | ||
ae038cb0 | 541 | /* Mark used when releasing cached dies. */ |
9068261f | 542 | bool mark : 1; |
ae038cb0 | 543 | |
8be455d7 JK |
544 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
545 | This test is imperfect as there may exist optimized debug code not using | |
546 | any location list and still facing inlining issues if handled as | |
547 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 548 | bool has_loclist : 1; |
ba919b58 | 549 | |
9068261f | 550 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
551 | if all the producer_is_* fields are valid. This information is cached |
552 | because profiling CU expansion showed excessive time spent in | |
553 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
554 | bool checked_producer : 1; |
555 | bool producer_is_gxx_lt_4_6 : 1; | |
556 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 557 | bool producer_is_icc : 1; |
9068261f | 558 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 559 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 560 | |
9068261f | 561 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
562 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
563 | this information, but later versions do. */ | |
564 | ||
9068261f | 565 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
566 | |
567 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
568 | |
569 | /* If this CU was inherited by another CU (via specification, | |
570 | abstract_origin, etc), this is the ancestor CU. */ | |
571 | dwarf2_cu *ancestor; | |
572 | ||
573 | /* Get the buildsym_compunit for this CU. */ | |
574 | buildsym_compunit *get_builder () | |
575 | { | |
576 | /* If this CU has a builder associated with it, use that. */ | |
577 | if (m_builder != nullptr) | |
578 | return m_builder.get (); | |
579 | ||
580 | /* Otherwise, search ancestors for a valid builder. */ | |
581 | if (ancestor != nullptr) | |
582 | return ancestor->get_builder (); | |
583 | ||
584 | return nullptr; | |
585 | } | |
e7c27a73 DJ |
586 | }; |
587 | ||
094b34ac DE |
588 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
589 | This includes type_unit_group and quick_file_names. */ | |
590 | ||
591 | struct stmt_list_hash | |
592 | { | |
593 | /* The DWO unit this table is from or NULL if there is none. */ | |
594 | struct dwo_unit *dwo_unit; | |
595 | ||
596 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 597 | sect_offset line_sect_off; |
094b34ac DE |
598 | }; |
599 | ||
f4dc4d17 DE |
600 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
601 | an object of this type. */ | |
602 | ||
603 | struct type_unit_group | |
604 | { | |
0186c6a7 | 605 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
606 | To simplify things we create an artificial CU that "includes" all the |
607 | type units using this stmt_list so that the rest of the code still has | |
608 | a "per_cu" handle on the symtab. | |
609 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 610 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
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 DE |
625 | |
626 | /* The number of symtabs from the line header. | |
627 | The value here must match line_header.num_file_names. */ | |
628 | unsigned int num_symtabs; | |
629 | ||
630 | /* The symbol tables for this TU (obtained from the files listed in | |
631 | DW_AT_stmt_list). | |
632 | WARNING: The order of entries here must match the order of entries | |
633 | in the line header. After the first TU using this type_unit_group, the | |
634 | line header for the subsequent TUs is recreated from this. This is done | |
635 | because we need to use the same symtabs for each TU using the same | |
636 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
637 | there's no guarantee the line header doesn't have duplicate entries. */ | |
638 | struct symtab **symtabs; | |
639 | }; | |
640 | ||
73869dc2 | 641 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
642 | |
643 | struct dwo_sections | |
644 | { | |
645 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
646 | struct dwarf2_section_info line; |
647 | struct dwarf2_section_info loc; | |
43988095 | 648 | struct dwarf2_section_info loclists; |
09262596 DE |
649 | struct dwarf2_section_info macinfo; |
650 | struct dwarf2_section_info macro; | |
3019eac3 DE |
651 | struct dwarf2_section_info str; |
652 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
653 | /* In the case of a virtual DWO file, these two are unused. */ |
654 | struct dwarf2_section_info info; | |
fd5866f6 | 655 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
656 | }; |
657 | ||
c88ee1f0 | 658 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
659 | |
660 | struct dwo_unit | |
661 | { | |
662 | /* Backlink to the containing struct dwo_file. */ | |
663 | struct dwo_file *dwo_file; | |
664 | ||
665 | /* The "id" that distinguishes this CU/TU. | |
666 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
667 | Since signatures came first, we stick with it for consistency. */ | |
668 | ULONGEST signature; | |
669 | ||
670 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 671 | struct dwarf2_section_info *section; |
3019eac3 | 672 | |
9c541725 PA |
673 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
674 | sect_offset sect_off; | |
3019eac3 DE |
675 | unsigned int length; |
676 | ||
677 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
678 | cu_offset type_offset_in_tu; | |
679 | }; | |
680 | ||
73869dc2 DE |
681 | /* include/dwarf2.h defines the DWP section codes. |
682 | It defines a max value but it doesn't define a min value, which we | |
683 | use for error checking, so provide one. */ | |
684 | ||
685 | enum dwp_v2_section_ids | |
686 | { | |
687 | DW_SECT_MIN = 1 | |
688 | }; | |
689 | ||
80626a55 | 690 | /* Data for one DWO file. |
57d63ce2 DE |
691 | |
692 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
693 | appears in a DWP file). DWP files don't really have DWO files per se - | |
694 | comdat folding of types "loses" the DWO file they came from, and from | |
695 | a high level view DWP files appear to contain a mass of random types. | |
696 | However, to maintain consistency with the non-DWP case we pretend DWP | |
697 | files contain virtual DWO files, and we assign each TU with one virtual | |
698 | DWO file (generally based on the line and abbrev section offsets - | |
699 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
700 | |
701 | struct dwo_file | |
702 | { | |
51ac9db5 SM |
703 | dwo_file () = default; |
704 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
705 | ||
18a8505e | 706 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
707 | For virtual DWO files the name is constructed from the section offsets |
708 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
709 | from related CU+TUs. */ | |
51ac9db5 | 710 | const char *dwo_name = nullptr; |
0ac5b59e DE |
711 | |
712 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 713 | const char *comp_dir = nullptr; |
3019eac3 | 714 | |
80626a55 DE |
715 | /* The bfd, when the file is open. Otherwise this is NULL. |
716 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 717 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 718 | |
73869dc2 DE |
719 | /* The sections that make up this DWO file. |
720 | Remember that for virtual DWO files in DWP V2, these are virtual | |
721 | sections (for lack of a better name). */ | |
51ac9db5 | 722 | struct dwo_sections sections {}; |
3019eac3 | 723 | |
33c5cd75 DB |
724 | /* The CUs in the file. |
725 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
726 | an extension to handle LLVM's Link Time Optimization output (where | |
727 | multiple source files may be compiled into a single object/dwo pair). */ | |
51ac9db5 | 728 | htab_t cus {}; |
3019eac3 DE |
729 | |
730 | /* Table of TUs in the file. | |
731 | Each element is a struct dwo_unit. */ | |
51ac9db5 | 732 | htab_t tus {}; |
3019eac3 DE |
733 | }; |
734 | ||
80626a55 DE |
735 | /* These sections are what may appear in a DWP file. */ |
736 | ||
737 | struct dwp_sections | |
738 | { | |
73869dc2 | 739 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
740 | struct dwarf2_section_info str; |
741 | struct dwarf2_section_info cu_index; | |
742 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
743 | |
744 | /* These are only used by DWP version 2 files. | |
745 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
746 | sections are referenced by section number, and are not recorded here. | |
747 | In DWP version 2 there is at most one copy of all these sections, each | |
748 | section being (effectively) comprised of the concatenation of all of the | |
749 | individual sections that exist in the version 1 format. | |
750 | To keep the code simple we treat each of these concatenated pieces as a | |
751 | section itself (a virtual section?). */ | |
752 | struct dwarf2_section_info abbrev; | |
753 | struct dwarf2_section_info info; | |
754 | struct dwarf2_section_info line; | |
755 | struct dwarf2_section_info loc; | |
756 | struct dwarf2_section_info macinfo; | |
757 | struct dwarf2_section_info macro; | |
758 | struct dwarf2_section_info str_offsets; | |
759 | struct dwarf2_section_info types; | |
80626a55 DE |
760 | }; |
761 | ||
73869dc2 DE |
762 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
763 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 764 | |
73869dc2 | 765 | struct virtual_v1_dwo_sections |
80626a55 DE |
766 | { |
767 | struct dwarf2_section_info abbrev; | |
768 | struct dwarf2_section_info line; | |
769 | struct dwarf2_section_info loc; | |
770 | struct dwarf2_section_info macinfo; | |
771 | struct dwarf2_section_info macro; | |
772 | struct dwarf2_section_info str_offsets; | |
773 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 774 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
775 | struct dwarf2_section_info info_or_types; |
776 | }; | |
777 | ||
73869dc2 DE |
778 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
779 | In version 2, the sections of the DWO files are concatenated together | |
780 | and stored in one section of that name. Thus each ELF section contains | |
781 | several "virtual" sections. */ | |
782 | ||
783 | struct virtual_v2_dwo_sections | |
784 | { | |
785 | bfd_size_type abbrev_offset; | |
786 | bfd_size_type abbrev_size; | |
787 | ||
788 | bfd_size_type line_offset; | |
789 | bfd_size_type line_size; | |
790 | ||
791 | bfd_size_type loc_offset; | |
792 | bfd_size_type loc_size; | |
793 | ||
794 | bfd_size_type macinfo_offset; | |
795 | bfd_size_type macinfo_size; | |
796 | ||
797 | bfd_size_type macro_offset; | |
798 | bfd_size_type macro_size; | |
799 | ||
800 | bfd_size_type str_offsets_offset; | |
801 | bfd_size_type str_offsets_size; | |
802 | ||
803 | /* Each DWP hash table entry records one CU or one TU. | |
804 | That is recorded here, and copied to dwo_unit.section. */ | |
805 | bfd_size_type info_or_types_offset; | |
806 | bfd_size_type info_or_types_size; | |
807 | }; | |
808 | ||
80626a55 DE |
809 | /* Contents of DWP hash tables. */ |
810 | ||
811 | struct dwp_hash_table | |
812 | { | |
73869dc2 | 813 | uint32_t version, nr_columns; |
80626a55 | 814 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
815 | const gdb_byte *hash_table, *unit_table; |
816 | union | |
817 | { | |
818 | struct | |
819 | { | |
820 | const gdb_byte *indices; | |
821 | } v1; | |
822 | struct | |
823 | { | |
824 | /* This is indexed by column number and gives the id of the section | |
825 | in that column. */ | |
826 | #define MAX_NR_V2_DWO_SECTIONS \ | |
827 | (1 /* .debug_info or .debug_types */ \ | |
828 | + 1 /* .debug_abbrev */ \ | |
829 | + 1 /* .debug_line */ \ | |
830 | + 1 /* .debug_loc */ \ | |
831 | + 1 /* .debug_str_offsets */ \ | |
832 | + 1 /* .debug_macro or .debug_macinfo */) | |
833 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
834 | const gdb_byte *offsets; | |
835 | const gdb_byte *sizes; | |
836 | } v2; | |
837 | } section_pool; | |
80626a55 DE |
838 | }; |
839 | ||
840 | /* Data for one DWP file. */ | |
841 | ||
842 | struct dwp_file | |
843 | { | |
400174b1 TT |
844 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
845 | : name (name_), | |
846 | dbfd (std::move (abfd)) | |
847 | { | |
848 | } | |
849 | ||
80626a55 DE |
850 | /* Name of the file. */ |
851 | const char *name; | |
852 | ||
73869dc2 | 853 | /* File format version. */ |
400174b1 | 854 | int version = 0; |
73869dc2 | 855 | |
93417882 | 856 | /* The bfd. */ |
400174b1 | 857 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
858 | |
859 | /* Section info for this file. */ | |
400174b1 | 860 | struct dwp_sections sections {}; |
80626a55 | 861 | |
57d63ce2 | 862 | /* Table of CUs in the file. */ |
400174b1 | 863 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
864 | |
865 | /* Table of TUs in the file. */ | |
400174b1 | 866 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 867 | |
19ac8c2e | 868 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
869 | htab_t loaded_cus {}; |
870 | htab_t loaded_tus {}; | |
80626a55 | 871 | |
73869dc2 DE |
872 | /* Table to map ELF section numbers to their sections. |
873 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
874 | unsigned int num_sections = 0; |
875 | asection **elf_sections = nullptr; | |
80626a55 DE |
876 | }; |
877 | ||
c0ab21c2 TT |
878 | struct abbrev_table; |
879 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; | |
880 | ||
0963b4bd MS |
881 | /* Struct used to pass misc. parameters to read_die_and_children, et |
882 | al. which are used for both .debug_info and .debug_types dies. | |
883 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 884 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
885 | |
886 | struct die_reader_specs | |
887 | { | |
a32a8923 | 888 | /* The bfd of die_section. */ |
93311388 DE |
889 | bfd* abfd; |
890 | ||
891 | /* The CU of the DIE we are parsing. */ | |
892 | struct dwarf2_cu *cu; | |
893 | ||
80626a55 | 894 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
895 | struct dwo_file *dwo_file; |
896 | ||
dee91e82 | 897 | /* The section the die comes from. |
3019eac3 | 898 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
899 | struct dwarf2_section_info *die_section; |
900 | ||
901 | /* die_section->buffer. */ | |
d521ce57 | 902 | const gdb_byte *buffer; |
f664829e DE |
903 | |
904 | /* The end of the buffer. */ | |
905 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
906 | |
907 | /* The value of the DW_AT_comp_dir attribute. */ | |
908 | const char *comp_dir; | |
685af9cd TT |
909 | |
910 | /* The abbreviation table to use when reading the DIEs. */ | |
911 | struct abbrev_table *abbrev_table; | |
93311388 DE |
912 | }; |
913 | ||
c0ab21c2 TT |
914 | /* A subclass of die_reader_specs that holds storage and has complex |
915 | constructor and destructor behavior. */ | |
916 | ||
917 | class cutu_reader : public die_reader_specs | |
918 | { | |
919 | public: | |
920 | ||
921 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
922 | struct abbrev_table *abbrev_table, | |
923 | int use_existing_cu, int keep, | |
924 | bool skip_partial); | |
925 | ||
926 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
927 | struct dwarf2_cu *parent_cu = nullptr, | |
928 | struct dwo_file *dwo_file = nullptr); | |
929 | ||
930 | ~cutu_reader (); | |
931 | ||
932 | DISABLE_COPY_AND_ASSIGN (cutu_reader); | |
933 | ||
934 | const gdb_byte *info_ptr = nullptr; | |
935 | struct die_info *comp_unit_die = nullptr; | |
936 | int has_children = 0; | |
937 | bool dummy_p = false; | |
938 | ||
939 | private: | |
940 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
941 | int use_existing_cu, int keep); | |
942 | ||
943 | struct dwarf2_per_cu_data *m_this_cu; | |
944 | int m_keep = 0; | |
945 | std::unique_ptr<dwarf2_cu> m_new_cu; | |
946 | ||
947 | /* The ordinary abbreviation table. */ | |
948 | abbrev_table_up m_abbrev_table_holder; | |
949 | ||
950 | /* The DWO abbreviation table. */ | |
951 | abbrev_table_up m_dwo_abbrev_table; | |
952 | }; | |
dee91e82 | 953 | |
7ba99d21 AT |
954 | /* dir_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 and |
955 | later. */ | |
956 | typedef int dir_index; | |
ecfb656c | 957 | |
7ba99d21 AT |
958 | /* file_name_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 |
959 | and later. */ | |
960 | typedef int file_name_index; | |
ecfb656c | 961 | |
52059ffd TT |
962 | struct file_entry |
963 | { | |
fff8551c PA |
964 | file_entry () = default; |
965 | ||
ecfb656c | 966 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
967 | unsigned int mod_time_, unsigned int length_) |
968 | : name (name_), | |
ecfb656c | 969 | d_index (d_index_), |
fff8551c PA |
970 | mod_time (mod_time_), |
971 | length (length_) | |
972 | {} | |
973 | ||
ecfb656c PA |
974 | /* Return the include directory at D_INDEX stored in LH. Returns |
975 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
976 | const char *include_dir (const line_header *lh) const; |
977 | ||
fff8551c PA |
978 | /* The file name. Note this is an observing pointer. The memory is |
979 | owned by debug_line_buffer. */ | |
980 | const char *name {}; | |
981 | ||
8c43009f | 982 | /* The directory index (1-based). */ |
ecfb656c | 983 | dir_index d_index {}; |
fff8551c PA |
984 | |
985 | unsigned int mod_time {}; | |
986 | ||
987 | unsigned int length {}; | |
988 | ||
989 | /* True if referenced by the Line Number Program. */ | |
990 | bool included_p {}; | |
991 | ||
83769d0b | 992 | /* The associated symbol table, if any. */ |
fff8551c | 993 | struct symtab *symtab {}; |
52059ffd TT |
994 | }; |
995 | ||
debd256d JB |
996 | /* The line number information for a compilation unit (found in the |
997 | .debug_line section) begins with a "statement program header", | |
998 | which contains the following information. */ | |
999 | struct line_header | |
1000 | { | |
fff8551c PA |
1001 | line_header () |
1002 | : offset_in_dwz {} | |
1003 | {} | |
1004 | ||
1005 | /* Add an entry to the include directory table. */ | |
1006 | void add_include_dir (const char *include_dir); | |
1007 | ||
1008 | /* Add an entry to the file name table. */ | |
ecfb656c | 1009 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1010 | unsigned int mod_time, unsigned int length); |
1011 | ||
7ba99d21 AT |
1012 | /* Return the include dir at INDEX (0-based in DWARF 5 and 1-based before). |
1013 | Returns NULL if INDEX is out of bounds. */ | |
ecfb656c | 1014 | const char *include_dir_at (dir_index index) const |
8c43009f | 1015 | { |
7ba99d21 AT |
1016 | int vec_index; |
1017 | if (version >= 5) | |
1018 | vec_index = index; | |
1019 | else | |
1020 | vec_index = index - 1; | |
1021 | if (vec_index < 0 || vec_index >= m_include_dirs.size ()) | |
8c43009f | 1022 | return NULL; |
7ba99d21 | 1023 | return m_include_dirs[vec_index]; |
8c43009f PA |
1024 | } |
1025 | ||
7ba99d21 | 1026 | bool is_valid_file_index (int file_index) |
8c43009f | 1027 | { |
7ba99d21 AT |
1028 | if (version >= 5) |
1029 | return 0 <= file_index && file_index < file_names_size (); | |
1030 | return 1 <= file_index && file_index <= file_names_size (); | |
1031 | } | |
ecfb656c | 1032 | |
7ba99d21 AT |
1033 | /* Return the file name at INDEX (0-based in DWARF 5 and 1-based before). |
1034 | Returns NULL if INDEX is out of bounds. */ | |
1035 | file_entry *file_name_at (file_name_index index) | |
1036 | { | |
1037 | int vec_index; | |
1038 | if (version >= 5) | |
1039 | vec_index = index; | |
1040 | else | |
1041 | vec_index = index - 1; | |
1042 | if (vec_index < 0 || vec_index >= m_file_names.size ()) | |
fff8551c | 1043 | return NULL; |
7ba99d21 | 1044 | return &m_file_names[vec_index]; |
fff8551c PA |
1045 | } |
1046 | ||
7ba99d21 AT |
1047 | /* The indexes are 0-based in DWARF 5 and 1-based in DWARF 4. Therefore, |
1048 | this method should only be used to iterate through all file entries in an | |
1049 | index-agnostic manner. */ | |
1050 | std::vector<file_entry> &file_names () | |
1051 | { return m_file_names; } | |
1052 | ||
527f3840 | 1053 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1054 | sect_offset sect_off {}; |
527f3840 JK |
1055 | |
1056 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1057 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1058 | ||
1059 | unsigned int total_length {}; | |
1060 | unsigned short version {}; | |
1061 | unsigned int header_length {}; | |
1062 | unsigned char minimum_instruction_length {}; | |
1063 | unsigned char maximum_ops_per_instruction {}; | |
1064 | unsigned char default_is_stmt {}; | |
1065 | int line_base {}; | |
1066 | unsigned char line_range {}; | |
1067 | unsigned char opcode_base {}; | |
debd256d JB |
1068 | |
1069 | /* standard_opcode_lengths[i] is the number of operands for the | |
1070 | standard opcode whose value is i. This means that | |
1071 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1072 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1073 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1074 | |
7ba99d21 AT |
1075 | int file_names_size () |
1076 | { return m_file_names.size(); } | |
debd256d JB |
1077 | |
1078 | /* The start and end of the statement program following this | |
6502dd73 | 1079 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1080 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
7ba99d21 AT |
1081 | |
1082 | private: | |
1083 | /* The include_directories table. Note these are observing | |
1084 | pointers. The memory is owned by debug_line_buffer. */ | |
1085 | std::vector<const char *> m_include_dirs; | |
1086 | ||
1087 | /* The file_names table. This is private because the meaning of indexes | |
1088 | differs among DWARF versions (The first valid index is 1 in DWARF 4 and | |
1089 | before, and is 0 in DWARF 5 and later). So the client should use | |
1090 | file_name_at method for access. */ | |
1091 | std::vector<file_entry> m_file_names; | |
debd256d | 1092 | }; |
c906108c | 1093 | |
fff8551c PA |
1094 | typedef std::unique_ptr<line_header> line_header_up; |
1095 | ||
8c43009f PA |
1096 | const char * |
1097 | file_entry::include_dir (const line_header *lh) const | |
1098 | { | |
ecfb656c | 1099 | return lh->include_dir_at (d_index); |
8c43009f PA |
1100 | } |
1101 | ||
c906108c | 1102 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1103 | need this much information. */ |
6f06d47b | 1104 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1105 | { |
6f06d47b YQ |
1106 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1107 | ||
1108 | /* Disable assign but still keep copy ctor, which is needed | |
1109 | load_partial_dies. */ | |
1110 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1111 | ||
52356b79 YQ |
1112 | /* Adjust the partial die before generating a symbol for it. This |
1113 | function may set the is_external flag or change the DIE's | |
1114 | name. */ | |
1115 | void fixup (struct dwarf2_cu *cu); | |
1116 | ||
48fbe735 YQ |
1117 | /* Read a minimal amount of information into the minimal die |
1118 | structure. */ | |
1119 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1120 | const struct abbrev_info &abbrev, | |
1121 | const gdb_byte *info_ptr); | |
1122 | ||
72bf9492 | 1123 | /* Offset of this DIE. */ |
6f06d47b | 1124 | const sect_offset sect_off; |
72bf9492 DJ |
1125 | |
1126 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1127 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1128 | |
72bf9492 | 1129 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1130 | const unsigned int has_children : 1; |
1131 | ||
72bf9492 DJ |
1132 | unsigned int is_external : 1; |
1133 | unsigned int is_declaration : 1; | |
1134 | unsigned int has_type : 1; | |
1135 | unsigned int has_specification : 1; | |
1136 | unsigned int has_pc_info : 1; | |
481860b3 | 1137 | unsigned int may_be_inlined : 1; |
72bf9492 | 1138 | |
0c1b455e TT |
1139 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1140 | unsigned int main_subprogram : 1; | |
1141 | ||
72bf9492 DJ |
1142 | /* Flag set if the SCOPE field of this structure has been |
1143 | computed. */ | |
1144 | unsigned int scope_set : 1; | |
1145 | ||
fa4028e9 JB |
1146 | /* Flag set if the DIE has a byte_size attribute. */ |
1147 | unsigned int has_byte_size : 1; | |
1148 | ||
ff908ebf AW |
1149 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1150 | unsigned int has_const_value : 1; | |
1151 | ||
98bfdba5 PA |
1152 | /* Flag set if any of the DIE's children are template arguments. */ |
1153 | unsigned int has_template_arguments : 1; | |
1154 | ||
52356b79 | 1155 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1156 | unsigned int fixup_called : 1; |
1157 | ||
36586728 TT |
1158 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1159 | unsigned int is_dwz : 1; | |
1160 | ||
1161 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1162 | unsigned int spec_is_dwz : 1; | |
1163 | ||
72bf9492 | 1164 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1165 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1166 | const char *name = nullptr; |
72bf9492 | 1167 | |
abc72ce4 | 1168 | /* The linkage name, if present. */ |
6f06d47b | 1169 | const char *linkage_name = nullptr; |
abc72ce4 | 1170 | |
72bf9492 DJ |
1171 | /* The scope to prepend to our children. This is generally |
1172 | allocated on the comp_unit_obstack, so will disappear | |
1173 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1174 | const char *scope = nullptr; |
72bf9492 | 1175 | |
95554aad TT |
1176 | /* Some data associated with the partial DIE. The tag determines |
1177 | which field is live. */ | |
1178 | union | |
1179 | { | |
1180 | /* The location description associated with this DIE, if any. */ | |
1181 | struct dwarf_block *locdesc; | |
1182 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1183 | sect_offset sect_off; |
6f06d47b | 1184 | } d {}; |
72bf9492 DJ |
1185 | |
1186 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1187 | CORE_ADDR lowpc = 0; |
1188 | CORE_ADDR highpc = 0; | |
72bf9492 | 1189 | |
93311388 | 1190 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1191 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1192 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1193 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1194 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1195 | |
1196 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1197 | DW_AT_specification (or DW_AT_abstract_origin or | |
1198 | DW_AT_extension). */ | |
6f06d47b | 1199 | sect_offset spec_offset {}; |
72bf9492 DJ |
1200 | |
1201 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1202 | if any. */ | |
6f06d47b YQ |
1203 | struct partial_die_info *die_parent = nullptr; |
1204 | struct partial_die_info *die_child = nullptr; | |
1205 | struct partial_die_info *die_sibling = nullptr; | |
1206 | ||
1207 | friend struct partial_die_info * | |
1208 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1209 | ||
1210 | private: | |
1211 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1212 | partial_die_info (sect_offset sect_off) | |
1213 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1214 | { | |
1215 | } | |
1216 | ||
1217 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1218 | int has_children_) | |
1219 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1220 | { | |
1221 | is_external = 0; | |
1222 | is_declaration = 0; | |
1223 | has_type = 0; | |
1224 | has_specification = 0; | |
1225 | has_pc_info = 0; | |
1226 | may_be_inlined = 0; | |
1227 | main_subprogram = 0; | |
1228 | scope_set = 0; | |
1229 | has_byte_size = 0; | |
1230 | has_const_value = 0; | |
1231 | has_template_arguments = 0; | |
1232 | fixup_called = 0; | |
1233 | is_dwz = 0; | |
1234 | spec_is_dwz = 0; | |
1235 | } | |
c906108c SS |
1236 | }; |
1237 | ||
0963b4bd | 1238 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1239 | struct abbrev_info |
1240 | { | |
1241 | unsigned int number; /* number identifying abbrev */ | |
1242 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1243 | unsigned short has_children; /* boolean */ |
1244 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1245 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1246 | struct abbrev_info *next; /* next in chain */ | |
1247 | }; | |
1248 | ||
1249 | struct attr_abbrev | |
1250 | { | |
9d25dd43 DE |
1251 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1252 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1253 | |
1254 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1255 | LONGEST implicit_const; | |
c906108c SS |
1256 | }; |
1257 | ||
433df2d4 DE |
1258 | /* Size of abbrev_table.abbrev_hash_table. */ |
1259 | #define ABBREV_HASH_SIZE 121 | |
1260 | ||
1261 | /* Top level data structure to contain an abbreviation table. */ | |
1262 | ||
1263 | struct abbrev_table | |
1264 | { | |
685af9cd TT |
1265 | explicit abbrev_table (sect_offset off) |
1266 | : sect_off (off) | |
1267 | { | |
4a17f768 | 1268 | m_abbrevs = |
685af9cd | 1269 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1270 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1271 | } |
1272 | ||
1273 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1274 | ||
1275 | /* Allocate space for a struct abbrev_info object in | |
1276 | ABBREV_TABLE. */ | |
1277 | struct abbrev_info *alloc_abbrev (); | |
1278 | ||
1279 | /* Add an abbreviation to the table. */ | |
1280 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1281 | ||
1282 | /* Look up an abbrev in the table. | |
1283 | Returns NULL if the abbrev is not found. */ | |
1284 | ||
1285 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1286 | ||
1287 | ||
f4dc4d17 DE |
1288 | /* Where the abbrev table came from. |
1289 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1290 | const sect_offset sect_off; |
433df2d4 DE |
1291 | |
1292 | /* Storage for the abbrev table. */ | |
685af9cd | 1293 | auto_obstack abbrev_obstack; |
433df2d4 | 1294 | |
4a17f768 YQ |
1295 | private: |
1296 | ||
433df2d4 DE |
1297 | /* Hash table of abbrevs. |
1298 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1299 | It could be statically allocated, but the previous code didn't so we | |
1300 | don't either. */ | |
4a17f768 | 1301 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1302 | }; |
1303 | ||
0963b4bd | 1304 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1305 | struct attribute |
1306 | { | |
9d25dd43 | 1307 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1308 | ENUM_BITFIELD(dwarf_form) form : 15; |
1309 | ||
1310 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1311 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1312 | here for better struct attribute alignment. */ | |
1313 | unsigned int string_is_canonical : 1; | |
1314 | ||
b60c80d6 DJ |
1315 | union |
1316 | { | |
15d034d0 | 1317 | const char *str; |
b60c80d6 | 1318 | struct dwarf_block *blk; |
43bbcdc2 PH |
1319 | ULONGEST unsnd; |
1320 | LONGEST snd; | |
b60c80d6 | 1321 | CORE_ADDR addr; |
ac9ec31b | 1322 | ULONGEST signature; |
b60c80d6 DJ |
1323 | } |
1324 | u; | |
1325 | }; | |
1326 | ||
0963b4bd | 1327 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1328 | struct die_info |
1329 | { | |
76815b17 DE |
1330 | /* DWARF-2 tag for this DIE. */ |
1331 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1332 | ||
1333 | /* Number of attributes */ | |
98bfdba5 PA |
1334 | unsigned char num_attrs; |
1335 | ||
1336 | /* True if we're presently building the full type name for the | |
1337 | type derived from this DIE. */ | |
1338 | unsigned char building_fullname : 1; | |
76815b17 | 1339 | |
adde2bff DE |
1340 | /* True if this die is in process. PR 16581. */ |
1341 | unsigned char in_process : 1; | |
1342 | ||
76815b17 DE |
1343 | /* Abbrev number */ |
1344 | unsigned int abbrev; | |
1345 | ||
93311388 | 1346 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1347 | sect_offset sect_off; |
78ba4af6 JB |
1348 | |
1349 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1350 | points to this die's parent; CHILD points to the first child of | |
1351 | this node; and all the children of a given node are chained | |
4950bc1c | 1352 | together via their SIBLING fields. */ |
639d11d3 DC |
1353 | struct die_info *child; /* Its first child, if any. */ |
1354 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1355 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1356 | |
b60c80d6 DJ |
1357 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1358 | zero, but it's not common and zero-sized arrays are not | |
1359 | sufficiently portable C. */ | |
1360 | struct attribute attrs[1]; | |
c906108c SS |
1361 | }; |
1362 | ||
0963b4bd | 1363 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1364 | |
1365 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1366 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1367 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1368 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1369 | #define DW_SND(attr) ((attr)->u.snd) | |
1370 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1371 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1372 | |
0963b4bd | 1373 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1374 | struct dwarf_block |
1375 | { | |
56eb65bd | 1376 | size_t size; |
1d6edc3c JK |
1377 | |
1378 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1379 | const gdb_byte *data; |
c906108c SS |
1380 | }; |
1381 | ||
c906108c SS |
1382 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1383 | but this would require a corresponding change in unpack_field_as_long | |
1384 | and friends. */ | |
1385 | static int bits_per_byte = 8; | |
1386 | ||
2ddeaf8a TT |
1387 | /* When reading a variant or variant part, we track a bit more |
1388 | information about the field, and store it in an object of this | |
1389 | type. */ | |
1390 | ||
1391 | struct variant_field | |
1392 | { | |
1393 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1394 | value. */ | |
1395 | ULONGEST discriminant_value; | |
1396 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1397 | default branch. */ | |
1398 | bool default_branch; | |
1399 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1400 | field is the discriminant. */ | |
1401 | bool is_discriminant; | |
1402 | }; | |
1403 | ||
52059ffd TT |
1404 | struct nextfield |
1405 | { | |
be2daae6 TT |
1406 | int accessibility = 0; |
1407 | int virtuality = 0; | |
2ddeaf8a | 1408 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1409 | struct variant_field variant {}; |
1410 | struct field field {}; | |
52059ffd TT |
1411 | }; |
1412 | ||
1413 | struct fnfieldlist | |
1414 | { | |
be2daae6 TT |
1415 | const char *name = nullptr; |
1416 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1417 | }; |
1418 | ||
c906108c SS |
1419 | /* The routines that read and process dies for a C struct or C++ class |
1420 | pass lists of data member fields and lists of member function fields | |
1421 | in an instance of a field_info structure, as defined below. */ | |
1422 | struct field_info | |
c5aa993b | 1423 | { |
0963b4bd | 1424 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1425 | std::vector<struct nextfield> fields; |
1426 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1427 | |
7d0ccb61 | 1428 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1429 | int nfields = 0; |
c906108c | 1430 | |
85102364 | 1431 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1432 | int non_public_fields = 0; |
c906108c | 1433 | |
c5aa993b JM |
1434 | /* Member function fieldlist array, contains name of possibly overloaded |
1435 | member function, number of overloaded member functions and a pointer | |
1436 | to the head of the member function field chain. */ | |
be2daae6 | 1437 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1438 | |
1439 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1440 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1441 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1442 | |
1443 | /* Nested types defined by this class and the number of elements in this | |
1444 | list. */ | |
be2daae6 | 1445 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1446 | }; |
c906108c | 1447 | |
10b3939b DJ |
1448 | /* One item on the queue of compilation units to read in full symbols |
1449 | for. */ | |
1450 | struct dwarf2_queue_item | |
1451 | { | |
1452 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1453 | enum language pretend_language; |
10b3939b DJ |
1454 | struct dwarf2_queue_item *next; |
1455 | }; | |
1456 | ||
1457 | /* The current queue. */ | |
1458 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1459 | ||
ae038cb0 DJ |
1460 | /* Loaded secondary compilation units are kept in memory until they |
1461 | have not been referenced for the processing of this many | |
1462 | compilation units. Set this to zero to disable caching. Cache | |
1463 | sizes of up to at least twenty will improve startup time for | |
1464 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1465 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1466 | static void |
b4f54984 DE |
1467 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1468 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1469 | { |
3e43a32a | 1470 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1471 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1472 | value); |
1473 | } | |
4390d890 | 1474 | \f |
c906108c SS |
1475 | /* local function prototypes */ |
1476 | ||
a32a8923 DE |
1477 | static const char *get_section_name (const struct dwarf2_section_info *); |
1478 | ||
1479 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1480 | ||
918dd910 JK |
1481 | static void dwarf2_find_base_address (struct die_info *die, |
1482 | struct dwarf2_cu *cu); | |
1483 | ||
891813be | 1484 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1485 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1486 | ||
f1902523 JK |
1487 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1488 | const gdb_byte *info_ptr, | |
1489 | struct die_info *type_unit_die, | |
c0ab21c2 | 1490 | int has_children); |
f1902523 | 1491 | |
ed2dc618 SM |
1492 | static void dwarf2_build_psymtabs_hard |
1493 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1494 | |
72bf9492 DJ |
1495 | static void scan_partial_symbols (struct partial_die_info *, |
1496 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1497 | int, struct dwarf2_cu *); |
c906108c | 1498 | |
72bf9492 DJ |
1499 | static void add_partial_symbol (struct partial_die_info *, |
1500 | struct dwarf2_cu *); | |
63d06c5c | 1501 | |
72bf9492 DJ |
1502 | static void add_partial_namespace (struct partial_die_info *pdi, |
1503 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1504 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1505 | |
5d7cb8df | 1506 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1507 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1508 | struct dwarf2_cu *cu); |
1509 | ||
72bf9492 DJ |
1510 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1511 | struct dwarf2_cu *cu); | |
91c24f0a | 1512 | |
bc30ff58 JB |
1513 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1514 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1515 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1516 | |
685af9cd | 1517 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1518 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1519 | sect_offset); | |
433df2d4 | 1520 | |
d521ce57 | 1521 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1522 | |
dee91e82 | 1523 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1524 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1525 | |
fb816e8b TV |
1526 | /* A pair of partial_die_info and compilation unit. */ |
1527 | struct cu_partial_die_info | |
1528 | { | |
1529 | /* The compilation unit of the partial_die_info. */ | |
1530 | struct dwarf2_cu *cu; | |
1531 | /* A partial_die_info. */ | |
1532 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1533 | |
1534 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1535 | : cu (cu), | |
1536 | pdi (pdi) | |
405feb71 | 1537 | { /* Nothing. */ } |
122cf0f2 AB |
1538 | |
1539 | private: | |
1540 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1541 | }; |
1542 | ||
122cf0f2 AB |
1543 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1544 | struct dwarf2_cu *); | |
72bf9492 | 1545 | |
d521ce57 TT |
1546 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1547 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1548 | const gdb_byte *, bool *need_reprocess); |
1549 | ||
1550 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1551 | struct attribute *attr); | |
1552 | ||
1553 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1554 | |
d521ce57 | 1555 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1556 | unsigned int *); |
c906108c | 1557 | |
d521ce57 | 1558 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1559 | |
1560 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1561 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1562 | unsigned int *, unsigned int *); |
613e1657 | 1563 | |
d521ce57 TT |
1564 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1565 | const struct comp_unit_head *, | |
c764a876 DE |
1566 | unsigned int *); |
1567 | ||
d521ce57 | 1568 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1569 | |
ed2dc618 SM |
1570 | static sect_offset read_abbrev_offset |
1571 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1572 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1573 | |
d521ce57 | 1574 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1575 | |
d521ce57 | 1576 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1577 | |
ed2dc618 SM |
1578 | static const char *read_indirect_string |
1579 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1580 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1581 | |
ed2dc618 SM |
1582 | static const char *read_indirect_line_string |
1583 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1584 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1585 | |
ed2dc618 SM |
1586 | static const char *read_indirect_string_at_offset |
1587 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1588 | LONGEST str_offset); | |
927aa2e7 | 1589 | |
ed2dc618 SM |
1590 | static const char *read_indirect_string_from_dwz |
1591 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1592 | |
d521ce57 TT |
1593 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1594 | const gdb_byte *, | |
3019eac3 DE |
1595 | unsigned int *); |
1596 | ||
18a8505e AT |
1597 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1598 | ULONGEST str_index); | |
1599 | ||
1600 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1601 | ULONGEST str_index); | |
3019eac3 | 1602 | |
e142c38c | 1603 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1604 | |
e142c38c DJ |
1605 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1606 | struct dwarf2_cu *); | |
c906108c | 1607 | |
348e048f | 1608 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1609 | unsigned int); |
348e048f | 1610 | |
7d45c7c3 KB |
1611 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1612 | struct dwarf2_cu *cu); | |
1613 | ||
a084a2a6 AT |
1614 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1615 | ||
05cf31d1 JB |
1616 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1617 | struct dwarf2_cu *cu); | |
1618 | ||
e142c38c | 1619 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1620 | |
e142c38c | 1621 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1622 | struct dwarf2_cu **); |
63d06c5c | 1623 | |
9c541725 | 1624 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1625 | struct dwarf2_cu *cu); |
debd256d | 1626 | |
f3f5162e | 1627 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1628 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1629 | CORE_ADDR, int decode_mapping); |
c906108c | 1630 | |
804d2729 TT |
1631 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1632 | const char *); | |
c906108c | 1633 | |
a14ed312 | 1634 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1635 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1636 | |
ff39bb5e | 1637 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1638 | struct dwarf2_cu *); |
c906108c | 1639 | |
ff39bb5e | 1640 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1641 | struct type *type, |
1642 | const char *name, | |
1643 | struct obstack *obstack, | |
12df843f | 1644 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1645 | const gdb_byte **bytes, |
98bfdba5 | 1646 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1647 | |
e7c27a73 | 1648 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1649 | |
b4ba55a1 JB |
1650 | static int need_gnat_info (struct dwarf2_cu *); |
1651 | ||
3e43a32a MS |
1652 | static struct type *die_descriptive_type (struct die_info *, |
1653 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1654 | |
1655 | static void set_descriptive_type (struct type *, struct die_info *, | |
1656 | struct dwarf2_cu *); | |
1657 | ||
e7c27a73 DJ |
1658 | static struct type *die_containing_type (struct die_info *, |
1659 | struct dwarf2_cu *); | |
c906108c | 1660 | |
ff39bb5e | 1661 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1662 | struct dwarf2_cu *); |
c906108c | 1663 | |
f792889a | 1664 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1665 | |
673bfd45 DE |
1666 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1667 | ||
0d5cff50 | 1668 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1669 | |
6e70227d | 1670 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1671 | const char *suffix, int physname, |
1672 | struct dwarf2_cu *cu); | |
63d06c5c | 1673 | |
e7c27a73 | 1674 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1675 | |
348e048f DE |
1676 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1677 | ||
e7c27a73 | 1678 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1679 | |
e7c27a73 | 1680 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1681 | |
96408a79 SA |
1682 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1683 | ||
71a3c369 TT |
1684 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1685 | ||
ff013f42 | 1686 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1687 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1688 | |
3a2b436a | 1689 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1690 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1691 | enum pc_bounds_kind |
1692 | { | |
e385593e | 1693 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1694 | PC_BOUNDS_NOT_PRESENT, |
1695 | ||
e385593e JK |
1696 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1697 | were present but they do not form a valid range of PC addresses. */ | |
1698 | PC_BOUNDS_INVALID, | |
1699 | ||
3a2b436a JK |
1700 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1701 | PC_BOUNDS_RANGES, | |
1702 | ||
1703 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1704 | PC_BOUNDS_HIGH_LOW, | |
1705 | }; | |
1706 | ||
1707 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1708 | CORE_ADDR *, CORE_ADDR *, | |
1709 | struct dwarf2_cu *, | |
891813be | 1710 | dwarf2_psymtab *); |
c906108c | 1711 | |
fae299cd DC |
1712 | static void get_scope_pc_bounds (struct die_info *, |
1713 | CORE_ADDR *, CORE_ADDR *, | |
1714 | struct dwarf2_cu *); | |
1715 | ||
801e3a5b JB |
1716 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1717 | CORE_ADDR, struct dwarf2_cu *); | |
1718 | ||
a14ed312 | 1719 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1720 | struct dwarf2_cu *); |
c906108c | 1721 | |
a14ed312 | 1722 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1723 | struct type *, struct dwarf2_cu *); |
c906108c | 1724 | |
a14ed312 | 1725 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1726 | struct die_info *, struct type *, |
e7c27a73 | 1727 | struct dwarf2_cu *); |
c906108c | 1728 | |
a14ed312 | 1729 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1730 | struct type *, |
1731 | struct dwarf2_cu *); | |
c906108c | 1732 | |
134d01f1 | 1733 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1734 | |
e7c27a73 | 1735 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1736 | |
e7c27a73 | 1737 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1738 | |
5d7cb8df JK |
1739 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1740 | ||
804d2729 | 1741 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1742 | |
27aa8d6a SW |
1743 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1744 | ||
74921315 KS |
1745 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1746 | ||
f55ee35c JK |
1747 | static struct type *read_module_type (struct die_info *die, |
1748 | struct dwarf2_cu *cu); | |
1749 | ||
38d518c9 | 1750 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1751 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1752 | |
134d01f1 | 1753 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1754 | |
e7c27a73 | 1755 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1756 | |
6e70227d | 1757 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1758 | struct dwarf2_cu *); |
1759 | ||
bf6af496 | 1760 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1761 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1762 | struct die_info *); |
639d11d3 | 1763 | |
dee91e82 | 1764 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1765 | const gdb_byte *info_ptr, |
1766 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1767 | struct die_info *parent); |
1768 | ||
d521ce57 TT |
1769 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1770 | struct die_info **, const gdb_byte *, | |
1771 | int *, int); | |
3019eac3 | 1772 | |
d521ce57 TT |
1773 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1774 | struct die_info **, const gdb_byte *, | |
1775 | int *); | |
93311388 | 1776 | |
e7c27a73 | 1777 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1778 | |
15d034d0 TT |
1779 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1780 | struct obstack *); | |
71c25dea | 1781 | |
15d034d0 | 1782 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1783 | |
15d034d0 | 1784 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1785 | struct die_info *die, |
1786 | struct dwarf2_cu *cu); | |
1787 | ||
ca69b9e6 DE |
1788 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1789 | struct dwarf2_cu *cu); | |
1790 | ||
e142c38c | 1791 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1792 | struct dwarf2_cu **); |
9219021c | 1793 | |
f39c6ffd | 1794 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1795 | |
f39c6ffd | 1796 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1797 | |
a084a2a6 AT |
1798 | static const char *dwarf_unit_type_name (int unit_type); |
1799 | ||
f39c6ffd | 1800 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1801 | |
a121b7c1 | 1802 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1803 | |
f39c6ffd | 1804 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1805 | |
f9aca02d | 1806 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1807 | |
d97bc12b DE |
1808 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1809 | ||
1810 | static void dump_die_for_error (struct die_info *); | |
1811 | ||
1812 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1813 | struct die_info *); | |
c906108c | 1814 | |
d97bc12b | 1815 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1816 | |
51545339 | 1817 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1818 | struct dwarf2_cu *); |
c906108c | 1819 | |
ff39bb5e | 1820 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1821 | |
ff39bb5e | 1822 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1823 | |
348e048f | 1824 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1825 | const struct attribute *, |
348e048f DE |
1826 | struct dwarf2_cu **); |
1827 | ||
10b3939b | 1828 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1829 | const struct attribute *, |
f2f0e013 | 1830 | struct dwarf2_cu **); |
c906108c | 1831 | |
348e048f | 1832 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1833 | const struct attribute *, |
348e048f DE |
1834 | struct dwarf2_cu **); |
1835 | ||
ac9ec31b DE |
1836 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1837 | struct dwarf2_cu *); | |
1838 | ||
1839 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1840 | const struct attribute *, |
ac9ec31b DE |
1841 | struct dwarf2_cu *); |
1842 | ||
e5fe5e75 | 1843 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1844 | |
52dc124a | 1845 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1846 | |
63e43d3a PMR |
1847 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1848 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1849 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1850 | |
c906108c SS |
1851 | /* memory allocation interface */ |
1852 | ||
7b5a2f43 | 1853 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1854 | |
b60c80d6 | 1855 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1856 | |
43f3e411 | 1857 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1858 | |
6e5a29e1 | 1859 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1860 | |
6e5a29e1 | 1861 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1862 | |
6e5a29e1 | 1863 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1864 | |
6e5a29e1 | 1865 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1866 | |
8cf6f0b1 TT |
1867 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1868 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1869 | const struct attribute *attr); |
8cf6f0b1 | 1870 | |
ff39bb5e | 1871 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1872 | struct symbol *sym, |
f1e6e072 TT |
1873 | struct dwarf2_cu *cu, |
1874 | int is_block); | |
4c2df51b | 1875 | |
d521ce57 TT |
1876 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1877 | const gdb_byte *info_ptr, | |
1878 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1879 | |
72bf9492 DJ |
1880 | static hashval_t partial_die_hash (const void *item); |
1881 | ||
1882 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1883 | ||
ae038cb0 | 1884 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1885 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1886 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1887 | |
9816fde3 | 1888 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1889 | struct die_info *comp_unit_die, |
1890 | enum language pretend_language); | |
93311388 | 1891 | |
ed2dc618 | 1892 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1893 | |
dee91e82 | 1894 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1895 | |
f792889a DJ |
1896 | static struct type *set_die_type (struct die_info *, struct type *, |
1897 | struct dwarf2_cu *); | |
1c379e20 | 1898 | |
ed2dc618 | 1899 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1900 | |
ed2dc618 | 1901 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1902 | |
58f0c718 | 1903 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1904 | enum language); |
10b3939b | 1905 | |
95554aad TT |
1906 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1907 | enum language); | |
10b3939b | 1908 | |
f4dc4d17 DE |
1909 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1910 | enum language); | |
1911 | ||
10b3939b DJ |
1912 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1913 | struct dwarf2_per_cu_data *); | |
1914 | ||
ae038cb0 DJ |
1915 | static void dwarf2_mark (struct dwarf2_cu *); |
1916 | ||
1917 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1918 | ||
b64f50a1 | 1919 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1920 | struct dwarf2_per_cu_data *); |
673bfd45 | 1921 | |
f792889a | 1922 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1923 | |
95554aad TT |
1924 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1925 | enum language pretend_language); | |
1926 | ||
ed2dc618 | 1927 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1928 | |
9a49df9d AB |
1929 | static struct type *dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu); |
1930 | static struct type *dwarf2_per_cu_addr_sized_int_type | |
1931 | (struct dwarf2_per_cu_data *per_cu, bool unsigned_p); | |
11a8b164 AB |
1932 | static struct type *dwarf2_per_cu_int_type |
1933 | (struct dwarf2_per_cu_data *per_cu, int size_in_bytes, | |
1934 | bool unsigned_p); | |
9a49df9d | 1935 | |
b303c6f6 AB |
1936 | /* Class, the destructor of which frees all allocated queue entries. This |
1937 | will only have work to do if an error was thrown while processing the | |
1938 | dwarf. If no error was thrown then the queue entries should have all | |
1939 | been processed, and freed, as we went along. */ | |
1940 | ||
1941 | class dwarf2_queue_guard | |
1942 | { | |
1943 | public: | |
1944 | dwarf2_queue_guard () = default; | |
1945 | ||
1946 | /* Free any entries remaining on the queue. There should only be | |
1947 | entries left if we hit an error while processing the dwarf. */ | |
1948 | ~dwarf2_queue_guard () | |
1949 | { | |
1950 | struct dwarf2_queue_item *item, *last; | |
1951 | ||
1952 | item = dwarf2_queue; | |
1953 | while (item) | |
1954 | { | |
1955 | /* Anything still marked queued is likely to be in an | |
1956 | inconsistent state, so discard it. */ | |
1957 | if (item->per_cu->queued) | |
1958 | { | |
1959 | if (item->per_cu->cu != NULL) | |
1960 | free_one_cached_comp_unit (item->per_cu); | |
1961 | item->per_cu->queued = 0; | |
1962 | } | |
1963 | ||
1964 | last = item; | |
1965 | item = item->next; | |
1966 | xfree (last); | |
1967 | } | |
1968 | ||
1969 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1970 | } | |
1971 | }; | |
1972 | ||
d721ba37 PA |
1973 | /* The return type of find_file_and_directory. Note, the enclosed |
1974 | string pointers are only valid while this object is valid. */ | |
1975 | ||
1976 | struct file_and_directory | |
1977 | { | |
1978 | /* The filename. This is never NULL. */ | |
1979 | const char *name; | |
1980 | ||
1981 | /* The compilation directory. NULL if not known. If we needed to | |
1982 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1983 | points directly to the DW_AT_comp_dir string attribute owned by | |
1984 | the obstack that owns the DIE. */ | |
1985 | const char *comp_dir; | |
1986 | ||
1987 | /* If we needed to build a new string for comp_dir, this is what | |
1988 | owns the storage. */ | |
1989 | std::string comp_dir_storage; | |
1990 | }; | |
1991 | ||
1992 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1993 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1994 | |
1995 | static char *file_full_name (int file, struct line_header *lh, | |
1996 | const char *comp_dir); | |
1997 | ||
43988095 JK |
1998 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1999 | enum class rcuh_kind { COMPILE, TYPE }; | |
2000 | ||
d521ce57 | 2001 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
2002 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
2003 | struct comp_unit_head *header, | |
36586728 | 2004 | struct dwarf2_section_info *section, |
d521ce57 | 2005 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2006 | rcuh_kind section_kind); |
36586728 | 2007 | |
673bfd45 | 2008 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2009 | |
3019eac3 DE |
2010 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2011 | ||
57d63ce2 | 2012 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2013 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2014 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2015 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2016 | |
ed2dc618 SM |
2017 | static struct dwp_file *get_dwp_file |
2018 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2019 | |
3019eac3 | 2020 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2021 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2022 | |
2023 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2024 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2025 | |
89e63ee4 DE |
2026 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2027 | ||
263db9a1 TT |
2028 | /* A unique pointer to a dwo_file. */ |
2029 | ||
51ac9db5 | 2030 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 2031 | |
ed2dc618 | 2032 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2033 | |
1b80a9fa | 2034 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2035 | |
2036 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2037 | \f |
2038 | /* Various complaints about symbol reading that don't abort the process. */ | |
2039 | ||
2040 | static void | |
2041 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2042 | { | |
b98664d3 | 2043 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2044 | } |
2045 | ||
2046 | static void | |
2047 | dwarf2_debug_line_missing_file_complaint (void) | |
2048 | { | |
b98664d3 | 2049 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2050 | } |
2051 | ||
2052 | static void | |
2053 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2054 | { | |
b98664d3 | 2055 | complaint (_(".debug_line section has line " |
4390d890 DE |
2056 | "program sequence without an end")); |
2057 | } | |
2058 | ||
2059 | static void | |
2060 | dwarf2_complex_location_expr_complaint (void) | |
2061 | { | |
b98664d3 | 2062 | complaint (_("location expression too complex")); |
4390d890 DE |
2063 | } |
2064 | ||
2065 | static void | |
2066 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2067 | int arg3) | |
2068 | { | |
b98664d3 | 2069 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2070 | arg1, arg2, arg3); |
2071 | } | |
2072 | ||
2073 | static void | |
2074 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2075 | { | |
b98664d3 | 2076 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2077 | " [in module %s]"), |
a32a8923 DE |
2078 | get_section_name (section), |
2079 | get_section_file_name (section)); | |
4390d890 | 2080 | } |
1b80a9fa | 2081 | |
4390d890 DE |
2082 | static void |
2083 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2084 | { | |
b98664d3 | 2085 | complaint (_("macro debug info contains a " |
4390d890 DE |
2086 | "malformed macro definition:\n`%s'"), |
2087 | arg1); | |
2088 | } | |
2089 | ||
2090 | static void | |
2091 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2092 | { | |
b98664d3 | 2093 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2094 | arg1, arg2); |
2095 | } | |
527f3840 JK |
2096 | |
2097 | /* Hash function for line_header_hash. */ | |
2098 | ||
2099 | static hashval_t | |
2100 | line_header_hash (const struct line_header *ofs) | |
2101 | { | |
9c541725 | 2102 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2103 | } |
2104 | ||
2105 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2106 | ||
2107 | static hashval_t | |
2108 | line_header_hash_voidp (const void *item) | |
2109 | { | |
9a3c8263 | 2110 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2111 | |
2112 | return line_header_hash (ofs); | |
2113 | } | |
2114 | ||
2115 | /* Equality function for line_header_hash. */ | |
2116 | ||
2117 | static int | |
2118 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2119 | { | |
9a3c8263 SM |
2120 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2121 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2122 | |
9c541725 | 2123 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2124 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2125 | } | |
2126 | ||
4390d890 | 2127 | \f |
9291a0cd | 2128 | |
31aa7e4e JB |
2129 | /* Read the given attribute value as an address, taking the attribute's |
2130 | form into account. */ | |
2131 | ||
2132 | static CORE_ADDR | |
2133 | attr_value_as_address (struct attribute *attr) | |
2134 | { | |
2135 | CORE_ADDR addr; | |
2136 | ||
336d760d AT |
2137 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_addrx |
2138 | && attr->form != DW_FORM_GNU_addr_index) | |
31aa7e4e JB |
2139 | { |
2140 | /* Aside from a few clearly defined exceptions, attributes that | |
2141 | contain an address must always be in DW_FORM_addr form. | |
2142 | Unfortunately, some compilers happen to be violating this | |
2143 | requirement by encoding addresses using other forms, such | |
2144 | as DW_FORM_data4 for example. For those broken compilers, | |
2145 | we try to do our best, without any guarantee of success, | |
2146 | to interpret the address correctly. It would also be nice | |
2147 | to generate a complaint, but that would require us to maintain | |
2148 | a list of legitimate cases where a non-address form is allowed, | |
2149 | as well as update callers to pass in at least the CU's DWARF | |
2150 | version. This is more overhead than what we're willing to | |
2151 | expand for a pretty rare case. */ | |
2152 | addr = DW_UNSND (attr); | |
2153 | } | |
2154 | else | |
2155 | addr = DW_ADDR (attr); | |
2156 | ||
2157 | return addr; | |
2158 | } | |
2159 | ||
330cdd98 PA |
2160 | /* See declaration. */ |
2161 | ||
2162 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
2163 | const dwarf2_debug_sections *names, |
2164 | bool can_copy_) | |
2165 | : objfile (objfile_), | |
2166 | can_copy (can_copy_) | |
330cdd98 PA |
2167 | { |
2168 | if (names == NULL) | |
2169 | names = &dwarf2_elf_names; | |
2170 | ||
2171 | bfd *obfd = objfile->obfd; | |
2172 | ||
2173 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2174 | locate_sections (obfd, sec, *names); | |
2175 | } | |
2176 | ||
2177 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2178 | { | |
2179 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2180 | free_cached_comp_units (); | |
2181 | ||
2182 | if (quick_file_names_table) | |
2183 | htab_delete (quick_file_names_table); | |
2184 | ||
2185 | if (line_header_hash) | |
2186 | htab_delete (line_header_hash); | |
2187 | ||
b76e467d | 2188 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 2189 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 2190 | |
b2bdb8cf | 2191 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 2192 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 2193 | |
330cdd98 PA |
2194 | /* Everything else should be on the objfile obstack. */ |
2195 | } | |
2196 | ||
2197 | /* See declaration. */ | |
2198 | ||
2199 | void | |
2200 | dwarf2_per_objfile::free_cached_comp_units () | |
2201 | { | |
2202 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2203 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2204 | while (per_cu != NULL) | |
2205 | { | |
2206 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2207 | ||
fcd3b13d | 2208 | delete per_cu->cu; |
330cdd98 PA |
2209 | *last_chain = next_cu; |
2210 | per_cu = next_cu; | |
2211 | } | |
2212 | } | |
2213 | ||
11ed8cad TT |
2214 | /* A helper class that calls free_cached_comp_units on |
2215 | destruction. */ | |
2216 | ||
2217 | class free_cached_comp_units | |
2218 | { | |
2219 | public: | |
2220 | ||
2221 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2222 | : m_per_objfile (per_objfile) | |
2223 | { | |
2224 | } | |
2225 | ||
2226 | ~free_cached_comp_units () | |
2227 | { | |
2228 | m_per_objfile->free_cached_comp_units (); | |
2229 | } | |
2230 | ||
2231 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2232 | ||
2233 | private: | |
2234 | ||
2235 | dwarf2_per_objfile *m_per_objfile; | |
2236 | }; | |
2237 | ||
c906108c | 2238 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2239 | information and return true if we have enough to do something. |
2240 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
2241 | ELF names are used. CAN_COPY is true for formats where symbol |
2242 | interposition is possible and so symbol values must follow copy | |
2243 | relocation rules. */ | |
c906108c SS |
2244 | |
2245 | int | |
251d32d9 | 2246 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
2247 | const struct dwarf2_debug_sections *names, |
2248 | bool can_copy) | |
c906108c | 2249 | { |
97cbe998 SDJ |
2250 | if (objfile->flags & OBJF_READNEVER) |
2251 | return 0; | |
2252 | ||
ed2dc618 SM |
2253 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2254 | = get_dwarf2_per_objfile (objfile); | |
2255 | ||
2256 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 2257 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
2258 | names, |
2259 | can_copy); | |
5bfd760d | 2260 | |
73869dc2 | 2261 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2262 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2263 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2264 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2265 | } |
2266 | ||
2267 | /* Return the containing section of virtual section SECTION. */ | |
2268 | ||
2269 | static struct dwarf2_section_info * | |
2270 | get_containing_section (const struct dwarf2_section_info *section) | |
2271 | { | |
2272 | gdb_assert (section->is_virtual); | |
2273 | return section->s.containing_section; | |
c906108c SS |
2274 | } |
2275 | ||
a32a8923 DE |
2276 | /* Return the bfd owner of SECTION. */ |
2277 | ||
2278 | static struct bfd * | |
2279 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2280 | { | |
73869dc2 DE |
2281 | if (section->is_virtual) |
2282 | { | |
2283 | section = get_containing_section (section); | |
2284 | gdb_assert (!section->is_virtual); | |
2285 | } | |
049412e3 | 2286 | return section->s.section->owner; |
a32a8923 DE |
2287 | } |
2288 | ||
2289 | /* Return the bfd section of SECTION. | |
2290 | Returns NULL if the section is not present. */ | |
2291 | ||
2292 | static asection * | |
2293 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2294 | { | |
73869dc2 DE |
2295 | if (section->is_virtual) |
2296 | { | |
2297 | section = get_containing_section (section); | |
2298 | gdb_assert (!section->is_virtual); | |
2299 | } | |
049412e3 | 2300 | return section->s.section; |
a32a8923 DE |
2301 | } |
2302 | ||
2303 | /* Return the name of SECTION. */ | |
2304 | ||
2305 | static const char * | |
2306 | get_section_name (const struct dwarf2_section_info *section) | |
2307 | { | |
2308 | asection *sectp = get_section_bfd_section (section); | |
2309 | ||
2310 | gdb_assert (sectp != NULL); | |
fd361982 | 2311 | return bfd_section_name (sectp); |
a32a8923 DE |
2312 | } |
2313 | ||
2314 | /* Return the name of the file SECTION is in. */ | |
2315 | ||
2316 | static const char * | |
2317 | get_section_file_name (const struct dwarf2_section_info *section) | |
2318 | { | |
2319 | bfd *abfd = get_section_bfd_owner (section); | |
2320 | ||
2321 | return bfd_get_filename (abfd); | |
2322 | } | |
2323 | ||
2324 | /* Return the id of SECTION. | |
2325 | Returns 0 if SECTION doesn't exist. */ | |
2326 | ||
2327 | static int | |
2328 | get_section_id (const struct dwarf2_section_info *section) | |
2329 | { | |
2330 | asection *sectp = get_section_bfd_section (section); | |
2331 | ||
2332 | if (sectp == NULL) | |
2333 | return 0; | |
2334 | return sectp->id; | |
2335 | } | |
2336 | ||
2337 | /* Return the flags of SECTION. | |
73869dc2 | 2338 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2339 | |
2340 | static int | |
2341 | get_section_flags (const struct dwarf2_section_info *section) | |
2342 | { | |
2343 | asection *sectp = get_section_bfd_section (section); | |
2344 | ||
2345 | gdb_assert (sectp != NULL); | |
fd361982 | 2346 | return bfd_section_flags (sectp); |
a32a8923 DE |
2347 | } |
2348 | ||
251d32d9 TG |
2349 | /* When loading sections, we look either for uncompressed section or for |
2350 | compressed section names. */ | |
233a11ab CS |
2351 | |
2352 | static int | |
251d32d9 TG |
2353 | section_is_p (const char *section_name, |
2354 | const struct dwarf2_section_names *names) | |
233a11ab | 2355 | { |
251d32d9 TG |
2356 | if (names->normal != NULL |
2357 | && strcmp (section_name, names->normal) == 0) | |
2358 | return 1; | |
2359 | if (names->compressed != NULL | |
2360 | && strcmp (section_name, names->compressed) == 0) | |
2361 | return 1; | |
2362 | return 0; | |
233a11ab CS |
2363 | } |
2364 | ||
330cdd98 | 2365 | /* See declaration. */ |
c906108c | 2366 | |
330cdd98 PA |
2367 | void |
2368 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2369 | const dwarf2_debug_sections &names) | |
c906108c | 2370 | { |
fd361982 | 2371 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2372 | |
dc7650b8 JK |
2373 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2374 | { | |
2375 | } | |
950b7495 KS |
2376 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2377 | > bfd_get_file_size (abfd)) | |
2378 | { | |
2379 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2380 | warning (_("Discarding section %s which has a section size (%s" | |
2381 | ") larger than the file size [in module %s]"), | |
2382 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2383 | bfd_get_filename (abfd)); | |
2384 | } | |
330cdd98 | 2385 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2386 | { |
330cdd98 | 2387 | this->info.s.section = sectp; |
fd361982 | 2388 | this->info.size = bfd_section_size (sectp); |
c906108c | 2389 | } |
330cdd98 | 2390 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2391 | { |
330cdd98 | 2392 | this->abbrev.s.section = sectp; |
fd361982 | 2393 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2394 | } |
330cdd98 | 2395 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2396 | { |
330cdd98 | 2397 | this->line.s.section = sectp; |
fd361982 | 2398 | this->line.size = bfd_section_size (sectp); |
c906108c | 2399 | } |
330cdd98 | 2400 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2401 | { |
330cdd98 | 2402 | this->loc.s.section = sectp; |
fd361982 | 2403 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2404 | } |
330cdd98 | 2405 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2406 | { |
330cdd98 | 2407 | this->loclists.s.section = sectp; |
fd361982 | 2408 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2409 | } |
330cdd98 | 2410 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2411 | { |
330cdd98 | 2412 | this->macinfo.s.section = sectp; |
fd361982 | 2413 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2414 | } |
330cdd98 | 2415 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2416 | { |
330cdd98 | 2417 | this->macro.s.section = sectp; |
fd361982 | 2418 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2419 | } |
330cdd98 | 2420 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2421 | { |
330cdd98 | 2422 | this->str.s.section = sectp; |
fd361982 | 2423 | this->str.size = bfd_section_size (sectp); |
c906108c | 2424 | } |
18a8505e AT |
2425 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2426 | { | |
2427 | this->str_offsets.s.section = sectp; | |
2428 | this->str_offsets.size = bfd_section_size (sectp); | |
2429 | } | |
330cdd98 | 2430 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2431 | { |
330cdd98 | 2432 | this->line_str.s.section = sectp; |
fd361982 | 2433 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2434 | } |
330cdd98 | 2435 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2436 | { |
330cdd98 | 2437 | this->addr.s.section = sectp; |
fd361982 | 2438 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2439 | } |
330cdd98 | 2440 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2441 | { |
330cdd98 | 2442 | this->frame.s.section = sectp; |
fd361982 | 2443 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2444 | } |
330cdd98 | 2445 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2446 | { |
330cdd98 | 2447 | this->eh_frame.s.section = sectp; |
fd361982 | 2448 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2449 | } |
330cdd98 | 2450 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2451 | { |
330cdd98 | 2452 | this->ranges.s.section = sectp; |
fd361982 | 2453 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2454 | } |
330cdd98 | 2455 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2456 | { |
330cdd98 | 2457 | this->rnglists.s.section = sectp; |
fd361982 | 2458 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2459 | } |
330cdd98 | 2460 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2461 | { |
8b70b953 TT |
2462 | struct dwarf2_section_info type_section; |
2463 | ||
2464 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2465 | type_section.s.section = sectp; |
fd361982 | 2466 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2467 | |
fd5866f6 | 2468 | this->types.push_back (type_section); |
348e048f | 2469 | } |
330cdd98 | 2470 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2471 | { |
330cdd98 | 2472 | this->gdb_index.s.section = sectp; |
fd361982 | 2473 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2474 | } |
927aa2e7 JK |
2475 | else if (section_is_p (sectp->name, &names.debug_names)) |
2476 | { | |
2477 | this->debug_names.s.section = sectp; | |
fd361982 | 2478 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2479 | } |
2480 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2481 | { | |
2482 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2483 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2484 | } |
dce234bc | 2485 | |
fd361982 AM |
2486 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2487 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2488 | this->has_section_at_zero = true; |
c906108c SS |
2489 | } |
2490 | ||
fceca515 DE |
2491 | /* A helper function that decides whether a section is empty, |
2492 | or not present. */ | |
9e0ac564 TT |
2493 | |
2494 | static int | |
19ac8c2e | 2495 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2496 | { |
73869dc2 DE |
2497 | if (section->is_virtual) |
2498 | return section->size == 0; | |
049412e3 | 2499 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2500 | } |
2501 | ||
cd4fb1b2 | 2502 | /* See dwarf2read.h. */ |
c906108c | 2503 | |
cd4fb1b2 SM |
2504 | void |
2505 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2506 | { |
a32a8923 | 2507 | asection *sectp; |
3019eac3 | 2508 | bfd *abfd; |
dce234bc | 2509 | gdb_byte *buf, *retbuf; |
c906108c | 2510 | |
be391dca TT |
2511 | if (info->readin) |
2512 | return; | |
dce234bc | 2513 | info->buffer = NULL; |
dc4ccb6f | 2514 | info->readin = true; |
188dd5d6 | 2515 | |
9e0ac564 | 2516 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2517 | return; |
c906108c | 2518 | |
a32a8923 | 2519 | sectp = get_section_bfd_section (info); |
3019eac3 | 2520 | |
73869dc2 DE |
2521 | /* If this is a virtual section we need to read in the real one first. */ |
2522 | if (info->is_virtual) | |
2523 | { | |
2524 | struct dwarf2_section_info *containing_section = | |
2525 | get_containing_section (info); | |
2526 | ||
2527 | gdb_assert (sectp != NULL); | |
2528 | if ((sectp->flags & SEC_RELOC) != 0) | |
2529 | { | |
2530 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2531 | " supported in section %s [in module %s]"), | |
2532 | get_section_name (info), get_section_file_name (info)); | |
2533 | } | |
2534 | dwarf2_read_section (objfile, containing_section); | |
2535 | /* Other code should have already caught virtual sections that don't | |
2536 | fit. */ | |
2537 | gdb_assert (info->virtual_offset + info->size | |
2538 | <= containing_section->size); | |
2539 | /* If the real section is empty or there was a problem reading the | |
2540 | section we shouldn't get here. */ | |
2541 | gdb_assert (containing_section->buffer != NULL); | |
2542 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2543 | return; | |
2544 | } | |
2545 | ||
4bf44c1c TT |
2546 | /* If the section has relocations, we must read it ourselves. |
2547 | Otherwise we attach it to the BFD. */ | |
2548 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2549 | { |
d521ce57 | 2550 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2551 | return; |
dce234bc | 2552 | } |
dce234bc | 2553 | |
224c3ddb | 2554 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2555 | info->buffer = buf; |
dce234bc PP |
2556 | |
2557 | /* When debugging .o files, we may need to apply relocations; see | |
2558 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2559 | We never compress sections in .o files, so we only need to | |
2560 | try this when the section is not compressed. */ | |
ac8035ab | 2561 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2562 | if (retbuf != NULL) |
2563 | { | |
2564 | info->buffer = retbuf; | |
2565 | return; | |
2566 | } | |
2567 | ||
a32a8923 DE |
2568 | abfd = get_section_bfd_owner (info); |
2569 | gdb_assert (abfd != NULL); | |
2570 | ||
dce234bc PP |
2571 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2572 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2573 | { |
2574 | error (_("Dwarf Error: Can't read DWARF data" | |
2575 | " in section %s [in module %s]"), | |
fd361982 | 2576 | bfd_section_name (sectp), bfd_get_filename (abfd)); |
19ac8c2e | 2577 | } |
dce234bc PP |
2578 | } |
2579 | ||
9e0ac564 TT |
2580 | /* A helper function that returns the size of a section in a safe way. |
2581 | If you are positive that the section has been read before using the | |
2582 | size, then it is safe to refer to the dwarf2_section_info object's | |
2583 | "size" field directly. In other cases, you must call this | |
2584 | function, because for compressed sections the size field is not set | |
2585 | correctly until the section has been read. */ | |
2586 | ||
2587 | static bfd_size_type | |
2588 | dwarf2_section_size (struct objfile *objfile, | |
2589 | struct dwarf2_section_info *info) | |
2590 | { | |
2591 | if (!info->readin) | |
2592 | dwarf2_read_section (objfile, info); | |
2593 | return info->size; | |
2594 | } | |
2595 | ||
dce234bc | 2596 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2597 | SECTION_NAME. */ |
af34e669 | 2598 | |
dce234bc | 2599 | void |
3017a003 TG |
2600 | dwarf2_get_section_info (struct objfile *objfile, |
2601 | enum dwarf2_section_enum sect, | |
d521ce57 | 2602 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2603 | bfd_size_type *sizep) |
2604 | { | |
5bfd760d | 2605 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2606 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2607 | |
2608 | /* We may see an objfile without any DWARF, in which case we just | |
2609 | return nothing. */ | |
2610 | if (data == NULL) | |
2611 | { | |
2612 | *sectp = NULL; | |
2613 | *bufp = NULL; | |
2614 | *sizep = 0; | |
2615 | return; | |
2616 | } | |
3017a003 TG |
2617 | switch (sect) |
2618 | { | |
2619 | case DWARF2_DEBUG_FRAME: | |
2620 | info = &data->frame; | |
2621 | break; | |
2622 | case DWARF2_EH_FRAME: | |
2623 | info = &data->eh_frame; | |
2624 | break; | |
2625 | default: | |
2626 | gdb_assert_not_reached ("unexpected section"); | |
2627 | } | |
dce234bc | 2628 | |
9e0ac564 | 2629 | dwarf2_read_section (objfile, info); |
dce234bc | 2630 | |
a32a8923 | 2631 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2632 | *bufp = info->buffer; |
2633 | *sizep = info->size; | |
2634 | } | |
2635 | ||
36586728 TT |
2636 | /* A helper function to find the sections for a .dwz file. */ |
2637 | ||
2638 | static void | |
2639 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2640 | { | |
9a3c8263 | 2641 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2642 | |
2643 | /* Note that we only support the standard ELF names, because .dwz | |
2644 | is ELF-only (at the time of writing). */ | |
2645 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2646 | { | |
049412e3 | 2647 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2648 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2649 | } |
2650 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2651 | { | |
049412e3 | 2652 | dwz_file->info.s.section = sectp; |
fd361982 | 2653 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2654 | } |
2655 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2656 | { | |
049412e3 | 2657 | dwz_file->str.s.section = sectp; |
fd361982 | 2658 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2659 | } |
2660 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2661 | { | |
049412e3 | 2662 | dwz_file->line.s.section = sectp; |
fd361982 | 2663 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2664 | } |
2665 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2666 | { | |
049412e3 | 2667 | dwz_file->macro.s.section = sectp; |
fd361982 | 2668 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2669 | } |
2ec9a5e0 TT |
2670 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2671 | { | |
049412e3 | 2672 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2673 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2674 | } |
927aa2e7 JK |
2675 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2676 | { | |
2677 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2678 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2679 | } |
36586728 TT |
2680 | } |
2681 | ||
c4973306 | 2682 | /* See dwarf2read.h. */ |
36586728 | 2683 | |
c4973306 | 2684 | struct dwz_file * |
ed2dc618 | 2685 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2686 | { |
36586728 | 2687 | const char *filename; |
acd13123 | 2688 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2689 | size_t buildid_len; |
2690 | bfd_byte *buildid; | |
36586728 TT |
2691 | |
2692 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2693 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2694 | |
4db1a1dc | 2695 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2696 | gdb::unique_xmalloc_ptr<char> data |
2697 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2698 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2699 | if (data == NULL) |
2700 | { | |
2701 | if (bfd_get_error () == bfd_error_no_error) | |
2702 | return NULL; | |
2703 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2704 | bfd_errmsg (bfd_get_error ())); | |
2705 | } | |
791afaa2 TT |
2706 | |
2707 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2708 | |
acd13123 TT |
2709 | buildid_len = (size_t) buildid_len_arg; |
2710 | ||
791afaa2 | 2711 | filename = data.get (); |
d721ba37 PA |
2712 | |
2713 | std::string abs_storage; | |
36586728 TT |
2714 | if (!IS_ABSOLUTE_PATH (filename)) |
2715 | { | |
14278e1f TT |
2716 | gdb::unique_xmalloc_ptr<char> abs |
2717 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2718 | |
14278e1f | 2719 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2720 | filename = abs_storage.c_str (); |
36586728 TT |
2721 | } |
2722 | ||
dc294be5 TT |
2723 | /* First try the file name given in the section. If that doesn't |
2724 | work, try to use the build-id instead. */ | |
192b62ce | 2725 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2726 | if (dwz_bfd != NULL) |
36586728 | 2727 | { |
192b62ce | 2728 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2729 | dwz_bfd.reset (nullptr); |
36586728 TT |
2730 | } |
2731 | ||
dc294be5 TT |
2732 | if (dwz_bfd == NULL) |
2733 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2734 | ||
2735 | if (dwz_bfd == NULL) | |
2736 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2737 | objfile_name (dwarf2_per_objfile->objfile)); | |
2738 | ||
7ff8cb8c TT |
2739 | std::unique_ptr<struct dwz_file> result |
2740 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2741 | |
7ff8cb8c TT |
2742 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2743 | result.get ()); | |
36586728 | 2744 | |
7ff8cb8c TT |
2745 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2746 | result->dwz_bfd.get ()); | |
2747 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2748 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2749 | } |
9291a0cd | 2750 | \f |
7b9f3c50 DE |
2751 | /* DWARF quick_symbols_functions support. */ |
2752 | ||
2753 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2754 | unique line tables, so we maintain a separate table of all .debug_line | |
2755 | derived entries to support the sharing. | |
2756 | All the quick functions need is the list of file names. We discard the | |
2757 | line_header when we're done and don't need to record it here. */ | |
2758 | struct quick_file_names | |
2759 | { | |
094b34ac DE |
2760 | /* The data used to construct the hash key. */ |
2761 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2762 | |
2763 | /* The number of entries in file_names, real_names. */ | |
2764 | unsigned int num_file_names; | |
2765 | ||
2766 | /* The file names from the line table, after being run through | |
2767 | file_full_name. */ | |
2768 | const char **file_names; | |
2769 | ||
2770 | /* The file names from the line table after being run through | |
2771 | gdb_realpath. These are computed lazily. */ | |
2772 | const char **real_names; | |
2773 | }; | |
2774 | ||
2775 | /* When using the index (and thus not using psymtabs), each CU has an | |
2776 | object of this type. This is used to hold information needed by | |
2777 | the various "quick" methods. */ | |
2778 | struct dwarf2_per_cu_quick_data | |
2779 | { | |
2780 | /* The file table. This can be NULL if there was no file table | |
2781 | or it's currently not read in. | |
2782 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2783 | struct quick_file_names *file_names; | |
2784 | ||
2785 | /* The corresponding symbol table. This is NULL if symbols for this | |
2786 | CU have not yet been read. */ | |
43f3e411 | 2787 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2788 | |
2789 | /* A temporary mark bit used when iterating over all CUs in | |
2790 | expand_symtabs_matching. */ | |
2791 | unsigned int mark : 1; | |
2792 | ||
2793 | /* True if we've tried to read the file table and found there isn't one. | |
2794 | There will be no point in trying to read it again next time. */ | |
2795 | unsigned int no_file_data : 1; | |
2796 | }; | |
2797 | ||
094b34ac DE |
2798 | /* Utility hash function for a stmt_list_hash. */ |
2799 | ||
2800 | static hashval_t | |
2801 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2802 | { | |
2803 | hashval_t v = 0; | |
2804 | ||
2805 | if (stmt_list_hash->dwo_unit != NULL) | |
2806 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2807 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2808 | return v; |
2809 | } | |
2810 | ||
2811 | /* Utility equality function for a stmt_list_hash. */ | |
2812 | ||
2813 | static int | |
2814 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2815 | const struct stmt_list_hash *rhs) | |
2816 | { | |
2817 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2818 | return 0; | |
2819 | if (lhs->dwo_unit != NULL | |
2820 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2821 | return 0; | |
2822 | ||
9c541725 | 2823 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2824 | } |
2825 | ||
7b9f3c50 DE |
2826 | /* Hash function for a quick_file_names. */ |
2827 | ||
2828 | static hashval_t | |
2829 | hash_file_name_entry (const void *e) | |
2830 | { | |
9a3c8263 SM |
2831 | const struct quick_file_names *file_data |
2832 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2833 | |
094b34ac | 2834 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2835 | } |
2836 | ||
2837 | /* Equality function for a quick_file_names. */ | |
2838 | ||
2839 | static int | |
2840 | eq_file_name_entry (const void *a, const void *b) | |
2841 | { | |
9a3c8263 SM |
2842 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2843 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2844 | |
094b34ac | 2845 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2846 | } |
2847 | ||
2848 | /* Delete function for a quick_file_names. */ | |
2849 | ||
2850 | static void | |
2851 | delete_file_name_entry (void *e) | |
2852 | { | |
9a3c8263 | 2853 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2854 | int i; |
2855 | ||
2856 | for (i = 0; i < file_data->num_file_names; ++i) | |
2857 | { | |
2858 | xfree ((void*) file_data->file_names[i]); | |
2859 | if (file_data->real_names) | |
2860 | xfree ((void*) file_data->real_names[i]); | |
2861 | } | |
2862 | ||
2863 | /* The space for the struct itself lives on objfile_obstack, | |
2864 | so we don't free it here. */ | |
2865 | } | |
2866 | ||
2867 | /* Create a quick_file_names hash table. */ | |
2868 | ||
2869 | static htab_t | |
2870 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2871 | { | |
2872 | return htab_create_alloc (nr_initial_entries, | |
2873 | hash_file_name_entry, eq_file_name_entry, | |
2874 | delete_file_name_entry, xcalloc, xfree); | |
2875 | } | |
9291a0cd | 2876 | |
918dd910 JK |
2877 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2878 | have to be created afterwards. You should call age_cached_comp_units after | |
2879 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2880 | ||
2881 | static void | |
58f0c718 | 2882 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2883 | { |
3019eac3 | 2884 | if (per_cu->is_debug_types) |
e5fe5e75 | 2885 | load_full_type_unit (per_cu); |
918dd910 | 2886 | else |
58f0c718 | 2887 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2888 | |
cc12ce38 DE |
2889 | if (per_cu->cu == NULL) |
2890 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2891 | |
2892 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2893 | } |
2894 | ||
a0f42c21 | 2895 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2896 | |
9291a0cd | 2897 | static void |
58f0c718 | 2898 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2899 | { |
ed2dc618 | 2900 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2901 | |
f4dc4d17 DE |
2902 | /* Skip type_unit_groups, reading the type units they contain |
2903 | is handled elsewhere. */ | |
2904 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2905 | return; | |
2906 | ||
b303c6f6 AB |
2907 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2908 | the queue. After this point we're guaranteed to leave this function | |
2909 | with the dwarf queue empty. */ | |
2910 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2911 | |
95554aad | 2912 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2913 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2914 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2915 | { | |
2916 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2917 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2918 | |
2919 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2920 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2921 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2922 | if (!per_cu->is_debug_types | |
cc12ce38 | 2923 | && per_cu->cu != NULL |
89e63ee4 DE |
2924 | && per_cu->cu->dwo_unit != NULL |
2925 | && dwarf2_per_objfile->index_table != NULL | |
2926 | && dwarf2_per_objfile->index_table->version <= 7 | |
2927 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2928 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2929 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2930 | } |
9291a0cd | 2931 | |
ed2dc618 | 2932 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2933 | |
2934 | /* Age the cache, releasing compilation units that have not | |
2935 | been used recently. */ | |
ed2dc618 | 2936 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2937 | } |
2938 | ||
2939 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2940 | the objfile from which this CU came. Returns the resulting symbol | |
2941 | table. */ | |
2fdf6df6 | 2942 | |
43f3e411 | 2943 | static struct compunit_symtab * |
58f0c718 | 2944 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2945 | { |
ed2dc618 SM |
2946 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2947 | ||
95554aad | 2948 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2949 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2950 | { |
11ed8cad | 2951 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2952 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2953 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2954 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2955 | } |
f194fefb | 2956 | |
43f3e411 | 2957 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2958 | } |
2959 | ||
ff4c9fec | 2960 | /* See declaration. */ |
f4dc4d17 | 2961 | |
ff4c9fec SM |
2962 | dwarf2_per_cu_data * |
2963 | dwarf2_per_objfile::get_cutu (int index) | |
2964 | { | |
b76e467d | 2965 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2966 | { |
b76e467d | 2967 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2968 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2969 | return &this->all_type_units[index]->per_cu; |
2970 | } | |
f4dc4d17 | 2971 | |
ff4c9fec SM |
2972 | return this->all_comp_units[index]; |
2973 | } | |
f4dc4d17 | 2974 | |
ff4c9fec | 2975 | /* See declaration. */ |
2fdf6df6 | 2976 | |
ff4c9fec SM |
2977 | dwarf2_per_cu_data * |
2978 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2979 | { |
b76e467d | 2980 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2981 | |
ff4c9fec | 2982 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2983 | } |
2984 | ||
ff4c9fec | 2985 | /* See declaration. */ |
f4dc4d17 | 2986 | |
ff4c9fec SM |
2987 | signatured_type * |
2988 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2989 | { |
b2bdb8cf | 2990 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2991 | |
ff4c9fec | 2992 | return this->all_type_units[index]; |
1fd400ff TT |
2993 | } |
2994 | ||
4b514bc8 JK |
2995 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2996 | objfile_obstack, and constructed with the specified field | |
2997 | values. */ | |
2998 | ||
2999 | static dwarf2_per_cu_data * | |
ed2dc618 | 3000 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
3001 | struct dwarf2_section_info *section, |
3002 | int is_dwz, | |
3003 | sect_offset sect_off, ULONGEST length) | |
3004 | { | |
ed2dc618 | 3005 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
3006 | dwarf2_per_cu_data *the_cu |
3007 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3008 | struct dwarf2_per_cu_data); | |
3009 | the_cu->sect_off = sect_off; | |
3010 | the_cu->length = length; | |
e3b94546 | 3011 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3012 | the_cu->section = section; |
3013 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3014 | struct dwarf2_per_cu_quick_data); | |
3015 | the_cu->is_dwz = is_dwz; | |
3016 | return the_cu; | |
3017 | } | |
3018 | ||
2ec9a5e0 TT |
3019 | /* A helper for create_cus_from_index that handles a given list of |
3020 | CUs. */ | |
2fdf6df6 | 3021 | |
74a0d9f6 | 3022 | static void |
12359b5e | 3023 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3024 | const gdb_byte *cu_list, offset_type n_elements, |
3025 | struct dwarf2_section_info *section, | |
b76e467d | 3026 | int is_dwz) |
9291a0cd | 3027 | { |
12359b5e | 3028 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 3029 | { |
74a0d9f6 | 3030 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3031 | |
3032 | sect_offset sect_off | |
3033 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3034 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3035 | cu_list += 2 * 8; |
3036 | ||
b76e467d | 3037 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
3038 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3039 | sect_off, length); | |
b76e467d | 3040 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 3041 | } |
9291a0cd TT |
3042 | } |
3043 | ||
2ec9a5e0 | 3044 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3045 | the CU objects for this objfile. */ |
2ec9a5e0 | 3046 | |
74a0d9f6 | 3047 | static void |
12359b5e | 3048 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3049 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3050 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3051 | { | |
b76e467d SM |
3052 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3053 | dwarf2_per_objfile->all_comp_units.reserve | |
3054 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3055 | |
12359b5e | 3056 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3057 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3058 | |
3059 | if (dwz_elements == 0) | |
74a0d9f6 | 3060 | return; |
2ec9a5e0 | 3061 | |
12359b5e SM |
3062 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3063 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3064 | &dwz->info, 1); |
2ec9a5e0 TT |
3065 | } |
3066 | ||
1fd400ff | 3067 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3068 | |
74a0d9f6 | 3069 | static void |
12359b5e SM |
3070 | create_signatured_type_table_from_index |
3071 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3072 | struct dwarf2_section_info *section, | |
3073 | const gdb_byte *bytes, | |
3074 | offset_type elements) | |
1fd400ff | 3075 | { |
12359b5e | 3076 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3077 | |
b2bdb8cf SM |
3078 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3079 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3080 | |
12359b5e | 3081 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3082 | |
12359b5e | 3083 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3084 | { |
52dc124a | 3085 | struct signatured_type *sig_type; |
9c541725 | 3086 | ULONGEST signature; |
1fd400ff | 3087 | void **slot; |
9c541725 | 3088 | cu_offset type_offset_in_tu; |
1fd400ff | 3089 | |
74a0d9f6 | 3090 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3091 | sect_offset sect_off |
3092 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3093 | type_offset_in_tu | |
3094 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3095 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3096 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3097 | bytes += 3 * 8; | |
3098 | ||
52dc124a | 3099 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3100 | struct signatured_type); |
52dc124a | 3101 | sig_type->signature = signature; |
9c541725 | 3102 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3103 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3104 | sig_type->per_cu.section = section; |
9c541725 | 3105 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3106 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3107 | sig_type->per_cu.v.quick |
1fd400ff TT |
3108 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3109 | struct dwarf2_per_cu_quick_data); | |
3110 | ||
52dc124a DE |
3111 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3112 | *slot = sig_type; | |
1fd400ff | 3113 | |
b2bdb8cf | 3114 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3115 | } |
3116 | ||
673bfd45 | 3117 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3118 | } |
3119 | ||
927aa2e7 JK |
3120 | /* Create the signatured type hash table from .debug_names. */ |
3121 | ||
3122 | static void | |
3123 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3124 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3125 | const mapped_debug_names &map, |
3126 | struct dwarf2_section_info *section, | |
3127 | struct dwarf2_section_info *abbrev_section) | |
3128 | { | |
ed2dc618 SM |
3129 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3130 | ||
927aa2e7 JK |
3131 | dwarf2_read_section (objfile, section); |
3132 | dwarf2_read_section (objfile, abbrev_section); | |
3133 | ||
b2bdb8cf SM |
3134 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3135 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3136 | |
3137 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3138 | ||
3139 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3140 | { | |
3141 | struct signatured_type *sig_type; | |
927aa2e7 | 3142 | void **slot; |
927aa2e7 JK |
3143 | |
3144 | sect_offset sect_off | |
3145 | = (sect_offset) (extract_unsigned_integer | |
3146 | (map.tu_table_reordered + i * map.offset_size, | |
3147 | map.offset_size, | |
3148 | map.dwarf5_byte_order)); | |
3149 | ||
3150 | comp_unit_head cu_header; | |
ed2dc618 SM |
3151 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3152 | abbrev_section, | |
927aa2e7 JK |
3153 | section->buffer + to_underlying (sect_off), |
3154 | rcuh_kind::TYPE); | |
3155 | ||
3156 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3157 | struct signatured_type); | |
3158 | sig_type->signature = cu_header.signature; | |
3159 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3160 | sig_type->per_cu.is_debug_types = 1; | |
3161 | sig_type->per_cu.section = section; | |
3162 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3163 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3164 | sig_type->per_cu.v.quick |
3165 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3166 | struct dwarf2_per_cu_quick_data); | |
3167 | ||
3168 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3169 | *slot = sig_type; | |
3170 | ||
b2bdb8cf | 3171 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3172 | } |
3173 | ||
3174 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3175 | } | |
3176 | ||
9291a0cd TT |
3177 | /* Read the address map data from the mapped index, and use it to |
3178 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3179 | |
9291a0cd | 3180 | static void |
ed2dc618 SM |
3181 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3182 | struct mapped_index *index) | |
9291a0cd | 3183 | { |
ed2dc618 | 3184 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3185 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3186 | const gdb_byte *iter, *end; |
9291a0cd | 3187 | struct addrmap *mutable_map; |
9291a0cd TT |
3188 | CORE_ADDR baseaddr; |
3189 | ||
8268c778 PA |
3190 | auto_obstack temp_obstack; |
3191 | ||
9291a0cd TT |
3192 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3193 | ||
f00a2de2 PA |
3194 | iter = index->address_table.data (); |
3195 | end = iter + index->address_table.size (); | |
9291a0cd | 3196 | |
b3b3bada | 3197 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
3198 | |
3199 | while (iter < end) | |
3200 | { | |
3201 | ULONGEST hi, lo, cu_index; | |
3202 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3203 | iter += 8; | |
3204 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3205 | iter += 8; | |
3206 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3207 | iter += 4; | |
f652bce2 | 3208 | |
24a55014 | 3209 | if (lo > hi) |
f652bce2 | 3210 | { |
b98664d3 | 3211 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3212 | hex_string (lo), hex_string (hi)); |
24a55014 | 3213 | continue; |
f652bce2 | 3214 | } |
24a55014 | 3215 | |
b76e467d | 3216 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3217 | { |
b98664d3 | 3218 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3219 | (unsigned) cu_index); |
24a55014 | 3220 | continue; |
f652bce2 | 3221 | } |
24a55014 | 3222 | |
79748972 TT |
3223 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3224 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3225 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3226 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3227 | } |
3228 | ||
d320c2b5 | 3229 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3230 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
3231 | } |
3232 | ||
927aa2e7 JK |
3233 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3234 | populate the objfile's psymtabs_addrmap. */ | |
3235 | ||
3236 | static void | |
ed2dc618 | 3237 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3238 | struct dwarf2_section_info *section) |
3239 | { | |
ed2dc618 | 3240 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3241 | bfd *abfd = objfile->obfd; |
3242 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 3243 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
3244 | |
3245 | auto_obstack temp_obstack; | |
3246 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3247 | ||
3248 | std::unordered_map<sect_offset, | |
3249 | dwarf2_per_cu_data *, | |
3250 | gdb::hash_enum<sect_offset>> | |
3251 | debug_info_offset_to_per_cu; | |
b76e467d | 3252 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3253 | { |
927aa2e7 JK |
3254 | const auto insertpair |
3255 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3256 | if (!insertpair.second) | |
3257 | { | |
3258 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3259 | "debug_info_offset %s, ignoring .debug_aranges."), |
3260 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3261 | return; |
3262 | } | |
3263 | } | |
3264 | ||
3265 | dwarf2_read_section (objfile, section); | |
3266 | ||
3267 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3268 | ||
3269 | const gdb_byte *addr = section->buffer; | |
3270 | ||
3271 | while (addr < section->buffer + section->size) | |
3272 | { | |
3273 | const gdb_byte *const entry_addr = addr; | |
3274 | unsigned int bytes_read; | |
3275 | ||
3276 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3277 | &bytes_read); | |
3278 | addr += bytes_read; | |
3279 | ||
3280 | const gdb_byte *const entry_end = addr + entry_length; | |
3281 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3282 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3283 | if (addr + entry_length > section->buffer + section->size) | |
3284 | { | |
47e3f474 | 3285 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3286 | "length %s exceeds section length %s, " |
3287 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3288 | objfile_name (objfile), |
3289 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3290 | plongest (bytes_read + entry_length), |
3291 | pulongest (section->size)); | |
3292 | return; | |
3293 | } | |
3294 | ||
3295 | /* The version number. */ | |
3296 | const uint16_t version = read_2_bytes (abfd, addr); | |
3297 | addr += 2; | |
3298 | if (version != 2) | |
3299 | { | |
47e3f474 | 3300 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3301 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
3302 | objfile_name (objfile), |
3303 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
3304 | return; |
3305 | } | |
3306 | ||
3307 | const uint64_t debug_info_offset | |
3308 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3309 | addr += offset_size; | |
3310 | const auto per_cu_it | |
3311 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3312 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3313 | { | |
47e3f474 | 3314 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3315 | "debug_info_offset %s does not exists, " |
3316 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3317 | objfile_name (objfile), |
3318 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3319 | pulongest (debug_info_offset)); |
3320 | return; | |
3321 | } | |
3322 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3323 | ||
3324 | const uint8_t address_size = *addr++; | |
3325 | if (address_size < 1 || address_size > 8) | |
3326 | { | |
47e3f474 | 3327 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3328 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
3329 | objfile_name (objfile), |
3330 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
3331 | return; |
3332 | } | |
3333 | ||
3334 | const uint8_t segment_selector_size = *addr++; | |
3335 | if (segment_selector_size != 0) | |
3336 | { | |
47e3f474 | 3337 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3338 | "segment_selector_size %u is not supported, " |
3339 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3340 | objfile_name (objfile), |
3341 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3342 | segment_selector_size); |
3343 | return; | |
3344 | } | |
3345 | ||
3346 | /* Must pad to an alignment boundary that is twice the address | |
3347 | size. It is undocumented by the DWARF standard but GCC does | |
3348 | use it. */ | |
3349 | for (size_t padding = ((-(addr - section->buffer)) | |
3350 | & (2 * address_size - 1)); | |
3351 | padding > 0; padding--) | |
3352 | if (*addr++ != 0) | |
3353 | { | |
47e3f474 | 3354 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3355 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3356 | objfile_name (objfile), |
3357 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3358 | return; |
3359 | } | |
3360 | ||
3361 | for (;;) | |
3362 | { | |
3363 | if (addr + 2 * address_size > entry_end) | |
3364 | { | |
47e3f474 | 3365 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3366 | "address list is not properly terminated, " |
3367 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3368 | objfile_name (objfile), |
3369 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3370 | return; |
3371 | } | |
3372 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3373 | dwarf5_byte_order); | |
3374 | addr += address_size; | |
3375 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3376 | dwarf5_byte_order); | |
3377 | addr += address_size; | |
3378 | if (start == 0 && length == 0) | |
3379 | break; | |
3380 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3381 | { | |
3382 | /* Symbol was eliminated due to a COMDAT group. */ | |
3383 | continue; | |
3384 | } | |
3385 | ULONGEST end = start + length; | |
79748972 TT |
3386 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3387 | - baseaddr); | |
3388 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3389 | - baseaddr); | |
927aa2e7 JK |
3390 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3391 | } | |
3392 | } | |
3393 | ||
d320c2b5 | 3394 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3395 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3396 | } |
3397 | ||
9291a0cd TT |
3398 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3399 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3400 | constant pool and return true. If NAME cannot be found, return |
3401 | false. */ | |
2fdf6df6 | 3402 | |
109483d9 | 3403 | static bool |
9291a0cd TT |
3404 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3405 | offset_type **vec_out) | |
3406 | { | |
0cf03b49 | 3407 | offset_type hash; |
9291a0cd | 3408 | offset_type slot, step; |
559a7a62 | 3409 | int (*cmp) (const char *, const char *); |
9291a0cd | 3410 | |
791afaa2 | 3411 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3412 | if (current_language->la_language == language_cplus |
45280282 IB |
3413 | || current_language->la_language == language_fortran |
3414 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3415 | { |
3416 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3417 | not contain any. */ | |
a8719064 | 3418 | |
72998fb3 | 3419 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3420 | { |
109483d9 | 3421 | without_params = cp_remove_params (name); |
0cf03b49 | 3422 | |
72998fb3 | 3423 | if (without_params != NULL) |
791afaa2 | 3424 | name = without_params.get (); |
0cf03b49 JK |
3425 | } |
3426 | } | |
3427 | ||
559a7a62 | 3428 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3429 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3430 | simulate our NAME being searched is also lowercased. */ |
3431 | hash = mapped_index_string_hash ((index->version == 4 | |
3432 | && case_sensitivity == case_sensitive_off | |
3433 | ? 5 : index->version), | |
3434 | name); | |
3435 | ||
f00a2de2 PA |
3436 | slot = hash & (index->symbol_table.size () - 1); |
3437 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3438 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3439 | |
3440 | for (;;) | |
3441 | { | |
9291a0cd | 3442 | const char *str; |
f00a2de2 PA |
3443 | |
3444 | const auto &bucket = index->symbol_table[slot]; | |
3445 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3446 | return false; |
9291a0cd | 3447 | |
f00a2de2 | 3448 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3449 | if (!cmp (name, str)) |
9291a0cd TT |
3450 | { |
3451 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3452 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3453 | return true; |
9291a0cd TT |
3454 | } |
3455 | ||
f00a2de2 | 3456 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3457 | } |
3458 | } | |
3459 | ||
4485a1c1 SM |
3460 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3461 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3462 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3463 | ok to use deprecated sections. |
3464 | ||
3465 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3466 | out parameters that are filled in with information about the CU and | |
3467 | TU lists in the section. | |
3468 | ||
4485a1c1 | 3469 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3470 | |
d33bc52e | 3471 | static bool |
4485a1c1 SM |
3472 | read_gdb_index_from_buffer (struct objfile *objfile, |
3473 | const char *filename, | |
3474 | bool deprecated_ok, | |
3475 | gdb::array_view<const gdb_byte> buffer, | |
3476 | struct mapped_index *map, | |
3477 | const gdb_byte **cu_list, | |
3478 | offset_type *cu_list_elements, | |
3479 | const gdb_byte **types_list, | |
3480 | offset_type *types_list_elements) | |
3481 | { | |
3482 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3483 | |
9291a0cd | 3484 | /* Version check. */ |
4485a1c1 | 3485 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3486 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3487 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3488 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3489 | indices. */ |
831adc1f | 3490 | if (version < 4) |
481860b3 GB |
3491 | { |
3492 | static int warning_printed = 0; | |
3493 | if (!warning_printed) | |
3494 | { | |
3495 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3496 | filename); |
481860b3 GB |
3497 | warning_printed = 1; |
3498 | } | |
3499 | return 0; | |
3500 | } | |
3501 | /* Index version 4 uses a different hash function than index version | |
3502 | 5 and later. | |
3503 | ||
3504 | Versions earlier than 6 did not emit psymbols for inlined | |
3505 | functions. Using these files will cause GDB not to be able to | |
3506 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3507 | indices unless the user has done |
3508 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3509 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3510 | { |
3511 | static int warning_printed = 0; | |
3512 | if (!warning_printed) | |
3513 | { | |
e615022a DE |
3514 | warning (_("\ |
3515 | Skipping deprecated .gdb_index section in %s.\n\ | |
3516 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3517 | to use the section anyway."), | |
2ec9a5e0 | 3518 | filename); |
481860b3 GB |
3519 | warning_printed = 1; |
3520 | } | |
3521 | return 0; | |
3522 | } | |
796a7ff8 | 3523 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3524 | of the TU (for symbols coming from TUs), |
3525 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3526 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3527 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3528 | These are just performance bugs, and we can't distinguish gdb-generated | |
3529 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3530 | |
481860b3 | 3531 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3532 | longer backward compatible. */ |
796a7ff8 | 3533 | if (version > 8) |
594e8718 | 3534 | return 0; |
9291a0cd | 3535 | |
559a7a62 | 3536 | map->version = version; |
9291a0cd | 3537 | |
4485a1c1 | 3538 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3539 | |
4485a1c1 | 3540 | int i = 0; |
2ec9a5e0 TT |
3541 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3542 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3543 | / 8); | |
1fd400ff TT |
3544 | ++i; |
3545 | ||
2ec9a5e0 TT |
3546 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3547 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3548 | - MAYBE_SWAP (metadata[i])) | |
3549 | / 8); | |
987d643c | 3550 | ++i; |
1fd400ff | 3551 | |
f00a2de2 PA |
3552 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3553 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3554 | map->address_table | |
3555 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3556 | ++i; |
3557 | ||
f00a2de2 PA |
3558 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3559 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3560 | map->symbol_table | |
3561 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3562 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3563 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3564 | |
f00a2de2 | 3565 | ++i; |
f9d83a0b | 3566 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3567 | |
2ec9a5e0 TT |
3568 | return 1; |
3569 | } | |
3570 | ||
4485a1c1 SM |
3571 | /* Callback types for dwarf2_read_gdb_index. */ |
3572 | ||
3573 | typedef gdb::function_view | |
3574 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3575 | get_gdb_index_contents_ftype; | |
3576 | typedef gdb::function_view | |
3577 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3578 | get_gdb_index_contents_dwz_ftype; | |
3579 | ||
927aa2e7 | 3580 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3581 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3582 | ||
3583 | static int | |
4485a1c1 SM |
3584 | dwarf2_read_gdb_index |
3585 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3586 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3587 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3588 | { |
2ec9a5e0 TT |
3589 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3590 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3591 | struct dwz_file *dwz; |
12359b5e | 3592 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3593 | |
4485a1c1 SM |
3594 | gdb::array_view<const gdb_byte> main_index_contents |
3595 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3596 | ||
3597 | if (main_index_contents.empty ()) | |
3598 | return 0; | |
3599 | ||
3063847f | 3600 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3601 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3602 | use_deprecated_index_sections, | |
3603 | main_index_contents, map.get (), &cu_list, | |
3604 | &cu_list_elements, &types_list, | |
3605 | &types_list_elements)) | |
2ec9a5e0 TT |
3606 | return 0; |
3607 | ||
0fefef59 | 3608 | /* Don't use the index if it's empty. */ |
3063847f | 3609 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3610 | return 0; |
3611 | ||
2ec9a5e0 TT |
3612 | /* If there is a .dwz file, read it so we can get its CU list as |
3613 | well. */ | |
ed2dc618 | 3614 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3615 | if (dwz != NULL) |
2ec9a5e0 | 3616 | { |
2ec9a5e0 TT |
3617 | struct mapped_index dwz_map; |
3618 | const gdb_byte *dwz_types_ignore; | |
3619 | offset_type dwz_types_elements_ignore; | |
3620 | ||
4485a1c1 SM |
3621 | gdb::array_view<const gdb_byte> dwz_index_content |
3622 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3623 | ||
3624 | if (dwz_index_content.empty ()) | |
3625 | return 0; | |
3626 | ||
3627 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3628 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3629 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3630 | &dwz_list, &dwz_list_elements, |
3631 | &dwz_types_ignore, | |
3632 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3633 | { |
3634 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3635 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3636 | return 0; |
3637 | } | |
3638 | } | |
3639 | ||
12359b5e SM |
3640 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3641 | dwz_list, dwz_list_elements); | |
1fd400ff | 3642 | |
8b70b953 TT |
3643 | if (types_list_elements) |
3644 | { | |
8b70b953 TT |
3645 | /* We can only handle a single .debug_types when we have an |
3646 | index. */ | |
fd5866f6 | 3647 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3648 | return 0; |
3649 | ||
fd5866f6 | 3650 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3651 | |
12359b5e SM |
3652 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3653 | types_list, types_list_elements); | |
8b70b953 | 3654 | } |
9291a0cd | 3655 | |
3063847f | 3656 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3657 | |
3063847f | 3658 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3659 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3660 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3661 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3662 | |
3663 | return 1; | |
3664 | } | |
3665 | ||
dee91e82 | 3666 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3667 | |
dee91e82 DE |
3668 | static void |
3669 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3670 | const gdb_byte *info_ptr, |
dee91e82 | 3671 | struct die_info *comp_unit_die, |
c0ab21c2 | 3672 | int has_children) |
9291a0cd | 3673 | { |
dee91e82 | 3674 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3675 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3676 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3677 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3678 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3679 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3680 | struct attribute *attr; |
7b9f3c50 DE |
3681 | void **slot; |
3682 | struct quick_file_names *qfn; | |
9291a0cd | 3683 | |
0186c6a7 DE |
3684 | gdb_assert (! this_cu->is_debug_types); |
3685 | ||
07261596 TT |
3686 | /* Our callers never want to match partial units -- instead they |
3687 | will match the enclosing full CU. */ | |
3688 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3689 | { | |
3690 | this_cu->v.quick->no_file_data = 1; | |
3691 | return; | |
3692 | } | |
3693 | ||
0186c6a7 | 3694 | lh_cu = this_cu; |
7b9f3c50 | 3695 | slot = NULL; |
dee91e82 | 3696 | |
fff8551c | 3697 | line_header_up lh; |
9c541725 | 3698 | sect_offset line_offset {}; |
fff8551c | 3699 | |
dee91e82 | 3700 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3701 | if (attr != nullptr) |
9291a0cd | 3702 | { |
7b9f3c50 DE |
3703 | struct quick_file_names find_entry; |
3704 | ||
9c541725 | 3705 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3706 | |
3707 | /* We may have already read in this line header (TU line header sharing). | |
3708 | If we have we're done. */ | |
094b34ac | 3709 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3710 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3711 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3712 | &find_entry, INSERT); | |
3713 | if (*slot != NULL) | |
3714 | { | |
9a3c8263 | 3715 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3716 | return; |
7b9f3c50 DE |
3717 | } |
3718 | ||
3019eac3 | 3719 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3720 | } |
3721 | if (lh == NULL) | |
3722 | { | |
094b34ac | 3723 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3724 | return; |
9291a0cd TT |
3725 | } |
3726 | ||
8d749320 | 3727 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3728 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3729 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3730 | gdb_assert (slot != NULL); |
3731 | *slot = qfn; | |
9291a0cd | 3732 | |
d721ba37 | 3733 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3734 | |
aa391654 TT |
3735 | int offset = 0; |
3736 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3737 | ++offset; | |
3738 | ||
7ba99d21 | 3739 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3740 | qfn->file_names = |
aa391654 TT |
3741 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3742 | if (offset != 0) | |
3743 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3744 | for (int i = 0; i < lh->file_names_size (); ++i) |
aa391654 | 3745 | qfn->file_names[i + offset] = file_full_name (i + 1, lh.get (), fnd.comp_dir); |
7b9f3c50 | 3746 | qfn->real_names = NULL; |
9291a0cd | 3747 | |
094b34ac | 3748 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3749 | } |
3750 | ||
3751 | /* A helper for the "quick" functions which attempts to read the line | |
3752 | table for THIS_CU. */ | |
3753 | ||
3754 | static struct quick_file_names * | |
e4a48d9d | 3755 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3756 | { |
0186c6a7 DE |
3757 | /* This should never be called for TUs. */ |
3758 | gdb_assert (! this_cu->is_debug_types); | |
3759 | /* Nor type unit groups. */ | |
3760 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3761 | |
dee91e82 DE |
3762 | if (this_cu->v.quick->file_names != NULL) |
3763 | return this_cu->v.quick->file_names; | |
3764 | /* If we know there is no line data, no point in looking again. */ | |
3765 | if (this_cu->v.quick->no_file_data) | |
3766 | return NULL; | |
3767 | ||
c0ab21c2 TT |
3768 | cutu_reader reader (this_cu); |
3769 | if (!reader.dummy_p) | |
3770 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3771 | reader.has_children); | |
dee91e82 DE |
3772 | |
3773 | if (this_cu->v.quick->no_file_data) | |
3774 | return NULL; | |
3775 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3776 | } |
3777 | ||
3778 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3779 | real path for a given file name from the line table. */ |
2fdf6df6 | 3780 | |
9291a0cd | 3781 | static const char * |
7b9f3c50 DE |
3782 | dw2_get_real_path (struct objfile *objfile, |
3783 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3784 | { |
7b9f3c50 DE |
3785 | if (qfn->real_names == NULL) |
3786 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3787 | qfn->num_file_names, const char *); |
9291a0cd | 3788 | |
7b9f3c50 | 3789 | if (qfn->real_names[index] == NULL) |
14278e1f | 3790 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3791 | |
7b9f3c50 | 3792 | return qfn->real_names[index]; |
9291a0cd TT |
3793 | } |
3794 | ||
3795 | static struct symtab * | |
3796 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3797 | { | |
ed2dc618 SM |
3798 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3799 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3800 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3801 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3802 | |
43f3e411 DE |
3803 | if (cust == NULL) |
3804 | return NULL; | |
ed2dc618 | 3805 | |
43f3e411 | 3806 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3807 | } |
3808 | ||
7b9f3c50 DE |
3809 | /* Traversal function for dw2_forget_cached_source_info. */ |
3810 | ||
3811 | static int | |
3812 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3813 | { |
7b9f3c50 | 3814 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3815 | |
7b9f3c50 | 3816 | if (file_data->real_names) |
9291a0cd | 3817 | { |
7b9f3c50 | 3818 | int i; |
9291a0cd | 3819 | |
7b9f3c50 | 3820 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3821 | { |
7b9f3c50 DE |
3822 | xfree ((void*) file_data->real_names[i]); |
3823 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3824 | } |
3825 | } | |
7b9f3c50 DE |
3826 | |
3827 | return 1; | |
3828 | } | |
3829 | ||
3830 | static void | |
3831 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3832 | { | |
ed2dc618 SM |
3833 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3834 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3835 | |
3836 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3837 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3838 | } |
3839 | ||
f8eba3c6 TT |
3840 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3841 | the symtabs and calls the iterator. */ | |
3842 | ||
3843 | static int | |
3844 | dw2_map_expand_apply (struct objfile *objfile, | |
3845 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3846 | const char *name, const char *real_path, |
14bc53a8 | 3847 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3848 | { |
43f3e411 | 3849 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3850 | |
3851 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3852 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3853 | return 0; |
3854 | ||
3855 | /* This may expand more than one symtab, and we want to iterate over | |
3856 | all of them. */ | |
58f0c718 | 3857 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3858 | |
14bc53a8 PA |
3859 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3860 | last_made, callback); | |
f8eba3c6 TT |
3861 | } |
3862 | ||
3863 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3864 | ||
14bc53a8 PA |
3865 | static bool |
3866 | dw2_map_symtabs_matching_filename | |
3867 | (struct objfile *objfile, const char *name, const char *real_path, | |
3868 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3869 | { |
c011a4f4 | 3870 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3871 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3872 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3873 | |
848e3e78 DE |
3874 | /* The rule is CUs specify all the files, including those used by |
3875 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3876 | |
b76e467d | 3877 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3878 | { |
3d7bb9d9 | 3879 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3880 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3881 | continue; |
3882 | ||
b76e467d | 3883 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3884 | if (file_data == NULL) |
9291a0cd TT |
3885 | continue; |
3886 | ||
b76e467d | 3887 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3888 | { |
7b9f3c50 | 3889 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3890 | const char *this_real_name; |
9291a0cd | 3891 | |
af529f8f | 3892 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3893 | { |
f5b95b50 | 3894 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3895 | callback)) |
3896 | return true; | |
288e77a7 | 3897 | continue; |
4aac40c8 | 3898 | } |
9291a0cd | 3899 | |
c011a4f4 DE |
3900 | /* Before we invoke realpath, which can get expensive when many |
3901 | files are involved, do a quick comparison of the basenames. */ | |
3902 | if (! basenames_may_differ | |
3903 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3904 | continue; | |
3905 | ||
da235a7c JK |
3906 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3907 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3908 | { |
da235a7c | 3909 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3910 | callback)) |
3911 | return true; | |
288e77a7 | 3912 | continue; |
da235a7c | 3913 | } |
9291a0cd | 3914 | |
da235a7c JK |
3915 | if (real_path != NULL) |
3916 | { | |
af529f8f JK |
3917 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3918 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3919 | if (this_real_name != NULL |
af529f8f | 3920 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3921 | { |
f5b95b50 | 3922 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3923 | callback)) |
3924 | return true; | |
288e77a7 | 3925 | continue; |
9291a0cd TT |
3926 | } |
3927 | } | |
3928 | } | |
3929 | } | |
3930 | ||
14bc53a8 | 3931 | return false; |
9291a0cd TT |
3932 | } |
3933 | ||
da51c347 DE |
3934 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3935 | ||
3936 | struct dw2_symtab_iterator | |
9291a0cd | 3937 | { |
ed2dc618 SM |
3938 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3939 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3940 | /* If set, only look for symbols that match that block. Valid values are |
3941 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3942 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3943 | /* The kind of symbol we're looking for. */ |
3944 | domain_enum domain; | |
3945 | /* The list of CUs from the index entry of the symbol, | |
3946 | or NULL if not found. */ | |
3947 | offset_type *vec; | |
3948 | /* The next element in VEC to look at. */ | |
3949 | int next; | |
3950 | /* The number of elements in VEC, or zero if there is no match. */ | |
3951 | int length; | |
8943b874 DE |
3952 | /* Have we seen a global version of the symbol? |
3953 | If so we can ignore all further global instances. | |
3954 | This is to work around gold/15646, inefficient gold-generated | |
3955 | indices. */ | |
3956 | int global_seen; | |
da51c347 | 3957 | }; |
9291a0cd | 3958 | |
2b79f376 | 3959 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3960 | |
9291a0cd | 3961 | static void |
da51c347 | 3962 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3963 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3964 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3965 | domain_enum domain, |
3966 | const char *name) | |
3967 | { | |
ed2dc618 | 3968 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3969 | iter->block_index = block_index; |
3970 | iter->domain = domain; | |
3971 | iter->next = 0; | |
8943b874 | 3972 | iter->global_seen = 0; |
da51c347 | 3973 | |
3063847f | 3974 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3975 | |
3976 | /* index is NULL if OBJF_READNOW. */ | |
3977 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3978 | iter->length = MAYBE_SWAP (*iter->vec); |
3979 | else | |
3980 | { | |
3981 | iter->vec = NULL; | |
3982 | iter->length = 0; | |
3983 | } | |
3984 | } | |
3985 | ||
3986 | /* Return the next matching CU or NULL if there are no more. */ | |
3987 | ||
3988 | static struct dwarf2_per_cu_data * | |
3989 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3990 | { | |
ed2dc618 SM |
3991 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3992 | ||
da51c347 DE |
3993 | for ( ; iter->next < iter->length; ++iter->next) |
3994 | { | |
3995 | offset_type cu_index_and_attrs = | |
3996 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3997 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3998 | gdb_index_symbol_kind symbol_kind = |
3999 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4000 | /* Only check the symbol attributes if they're present. | |
4001 | Indices prior to version 7 don't record them, | |
4002 | and indices >= 7 may elide them for certain symbols | |
4003 | (gold does this). */ | |
4004 | int attrs_valid = | |
ed2dc618 | 4005 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
4006 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
4007 | ||
3190f0c6 | 4008 | /* Don't crash on bad data. */ |
b76e467d | 4009 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4010 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 4011 | { |
b98664d3 | 4012 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
4013 | " [in module %s]"), |
4014 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4015 | continue; |
4016 | } | |
4017 | ||
ff4c9fec | 4018 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 4019 | |
da51c347 | 4020 | /* Skip if already read in. */ |
43f3e411 | 4021 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4022 | continue; |
4023 | ||
8943b874 DE |
4024 | /* Check static vs global. */ |
4025 | if (attrs_valid) | |
4026 | { | |
2b79f376 SM |
4027 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
4028 | ||
4029 | if (iter->block_index.has_value ()) | |
4030 | { | |
4031 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
4032 | ||
4033 | if (is_static != want_static) | |
4034 | continue; | |
4035 | } | |
4036 | ||
8943b874 DE |
4037 | /* Work around gold/15646. */ |
4038 | if (!is_static && iter->global_seen) | |
4039 | continue; | |
4040 | if (!is_static) | |
4041 | iter->global_seen = 1; | |
4042 | } | |
da51c347 DE |
4043 | |
4044 | /* Only check the symbol's kind if it has one. */ | |
4045 | if (attrs_valid) | |
4046 | { | |
4047 | switch (iter->domain) | |
4048 | { | |
4049 | case VAR_DOMAIN: | |
4050 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4051 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4052 | /* Some types are also in VAR_DOMAIN. */ | |
4053 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4054 | continue; | |
4055 | break; | |
4056 | case STRUCT_DOMAIN: | |
4057 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4058 | continue; | |
4059 | break; | |
4060 | case LABEL_DOMAIN: | |
4061 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4062 | continue; | |
4063 | break; | |
59c35742 AB |
4064 | case MODULE_DOMAIN: |
4065 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4066 | continue; | |
4067 | break; | |
da51c347 DE |
4068 | default: |
4069 | break; | |
4070 | } | |
4071 | } | |
4072 | ||
4073 | ++iter->next; | |
4074 | return per_cu; | |
4075 | } | |
4076 | ||
4077 | return NULL; | |
4078 | } | |
4079 | ||
43f3e411 | 4080 | static struct compunit_symtab * |
c7f839cb | 4081 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 4082 | const char *name, domain_enum domain) |
9291a0cd | 4083 | { |
43f3e411 | 4084 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4085 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4086 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4087 | |
b5ec771e PA |
4088 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4089 | ||
ed2dc618 SM |
4090 | struct dw2_symtab_iterator iter; |
4091 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4092 | |
2b79f376 | 4093 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 4094 | |
ed2dc618 SM |
4095 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4096 | { | |
4097 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4098 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 4099 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 4100 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 4101 | |
ed2dc618 SM |
4102 | sym = block_find_symbol (block, name, domain, |
4103 | block_find_non_opaque_type_preferred, | |
4104 | &with_opaque); | |
b2e2f908 | 4105 | |
ed2dc618 SM |
4106 | /* Some caution must be observed with overloaded functions |
4107 | and methods, since the index will not contain any overload | |
4108 | information (but NAME might contain it). */ | |
da51c347 | 4109 | |
ed2dc618 SM |
4110 | if (sym != NULL |
4111 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4112 | return stab; | |
4113 | if (with_opaque != NULL | |
4114 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4115 | stab_best = stab; | |
da51c347 | 4116 | |
ed2dc618 | 4117 | /* Keep looking through other CUs. */ |
9291a0cd | 4118 | } |
9291a0cd | 4119 | |
da51c347 | 4120 | return stab_best; |
9291a0cd TT |
4121 | } |
4122 | ||
4123 | static void | |
4124 | dw2_print_stats (struct objfile *objfile) | |
4125 | { | |
ed2dc618 SM |
4126 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4127 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4128 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4129 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4130 | int count = 0; |
9291a0cd | 4131 | |
ed2dc618 | 4132 | for (int i = 0; i < total; ++i) |
9291a0cd | 4133 | { |
ff4c9fec | 4134 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4135 | |
43f3e411 | 4136 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4137 | ++count; |
4138 | } | |
e4a48d9d | 4139 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4140 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4141 | } | |
4142 | ||
779bd270 DE |
4143 | /* This dumps minimal information about the index. |
4144 | It is called via "mt print objfiles". | |
4145 | One use is to verify .gdb_index has been loaded by the | |
4146 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4147 | ||
9291a0cd TT |
4148 | static void |
4149 | dw2_dump (struct objfile *objfile) | |
4150 | { | |
ed2dc618 SM |
4151 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4152 | = get_dwarf2_per_objfile (objfile); | |
4153 | ||
779bd270 DE |
4154 | gdb_assert (dwarf2_per_objfile->using_index); |
4155 | printf_filtered (".gdb_index:"); | |
4156 | if (dwarf2_per_objfile->index_table != NULL) | |
4157 | { | |
4158 | printf_filtered (" version %d\n", | |
4159 | dwarf2_per_objfile->index_table->version); | |
4160 | } | |
4161 | else | |
4162 | printf_filtered (" faked for \"readnow\"\n"); | |
4163 | printf_filtered ("\n"); | |
9291a0cd TT |
4164 | } |
4165 | ||
9291a0cd TT |
4166 | static void |
4167 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4168 | const char *func_name) | |
4169 | { | |
ed2dc618 SM |
4170 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4171 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4172 | |
ed2dc618 SM |
4173 | struct dw2_symtab_iterator iter; |
4174 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4175 | |
2b79f376 | 4176 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 4177 | |
ed2dc618 | 4178 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4179 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4180 | |
9291a0cd TT |
4181 | } |
4182 | ||
4183 | static void | |
4184 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4185 | { | |
ed2dc618 SM |
4186 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4187 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4188 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4189 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4190 | |
ed2dc618 | 4191 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4192 | { |
ff4c9fec | 4193 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4194 | |
58f0c718 TT |
4195 | /* We don't want to directly expand a partial CU, because if we |
4196 | read it with the wrong language, then assertion failures can | |
4197 | be triggered later on. See PR symtab/23010. So, tell | |
4198 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4199 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4200 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4201 | } |
4202 | } | |
4203 | ||
4204 | static void | |
652a8996 JK |
4205 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4206 | const char *fullname) | |
9291a0cd | 4207 | { |
ed2dc618 SM |
4208 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4209 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4210 | |
4211 | /* We don't need to consider type units here. | |
4212 | This is only called for examining code, e.g. expand_line_sal. | |
4213 | There can be an order of magnitude (or more) more type units | |
4214 | than comp units, and we avoid them if we can. */ | |
4215 | ||
b76e467d | 4216 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4217 | { |
3d7bb9d9 | 4218 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4219 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4220 | continue; |
4221 | ||
b76e467d | 4222 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4223 | if (file_data == NULL) |
9291a0cd TT |
4224 | continue; |
4225 | ||
b76e467d | 4226 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4227 | { |
652a8996 JK |
4228 | const char *this_fullname = file_data->file_names[j]; |
4229 | ||
4230 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4231 | { |
58f0c718 | 4232 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4233 | break; |
4234 | } | |
4235 | } | |
4236 | } | |
4237 | } | |
4238 | ||
9291a0cd | 4239 | static void |
199b4314 TT |
4240 | dw2_map_matching_symbols |
4241 | (struct objfile *objfile, | |
b054970d | 4242 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
4243 | int global, |
4244 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 4245 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4246 | { |
40658b94 | 4247 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4248 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4249 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4250 | } |
4251 | ||
e1ef7d7a PA |
4252 | /* Starting from a search name, return the string that finds the upper |
4253 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4254 | list. Returns the empty string to indicate that the upper bound is | |
4255 | the end of the list. */ | |
4256 | ||
4257 | static std::string | |
4258 | make_sort_after_prefix_name (const char *search_name) | |
4259 | { | |
4260 | /* When looking to complete "func", we find the upper bound of all | |
4261 | symbols that start with "func" by looking for where we'd insert | |
4262 | the closest string that would follow "func" in lexicographical | |
4263 | order. Usually, that's "func"-with-last-character-incremented, | |
4264 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4265 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4266 | Especially mind the 0xff character, which is a valid character in | |
4267 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4268 | rule out compilers allowing it in identifiers. Note that | |
4269 | conveniently, strcmp/strcasecmp are specified to compare | |
4270 | characters interpreted as unsigned char. So what we do is treat | |
4271 | the whole string as a base 256 number composed of a sequence of | |
4272 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4273 | to 0, and carries 1 to the following more-significant position. | |
4274 | If the very first character in SEARCH_NAME ends up incremented | |
4275 | and carries/overflows, then the upper bound is the end of the | |
4276 | list. The string after the empty string is also the empty | |
4277 | string. | |
4278 | ||
4279 | Some examples of this operation: | |
4280 | ||
4281 | SEARCH_NAME => "+1" RESULT | |
4282 | ||
4283 | "abc" => "abd" | |
4284 | "ab\xff" => "ac" | |
4285 | "\xff" "a" "\xff" => "\xff" "b" | |
4286 | "\xff" => "" | |
4287 | "\xff\xff" => "" | |
4288 | "" => "" | |
4289 | ||
4290 | Then, with these symbols for example: | |
4291 | ||
4292 | func | |
4293 | func1 | |
4294 | fund | |
4295 | ||
4296 | completing "func" looks for symbols between "func" and | |
4297 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4298 | which finds "func" and "func1", but not "fund". | |
4299 | ||
4300 | And with: | |
4301 | ||
4302 | funcÿ (Latin1 'ÿ' [0xff]) | |
4303 | funcÿ1 | |
4304 | fund | |
4305 | ||
4306 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4307 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4308 | ||
4309 | And with: | |
4310 | ||
4311 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4312 | ÿÿ1 | |
4313 | ||
4314 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4315 | the end of the list. | |
4316 | */ | |
4317 | std::string after = search_name; | |
4318 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4319 | after.pop_back (); | |
4320 | if (!after.empty ()) | |
4321 | after.back () = (unsigned char) after.back () + 1; | |
4322 | return after; | |
4323 | } | |
4324 | ||
5c58de74 | 4325 | /* See declaration. */ |
61d96d7e | 4326 | |
5c58de74 PA |
4327 | std::pair<std::vector<name_component>::const_iterator, |
4328 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4329 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 4330 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 4331 | { |
5c58de74 PA |
4332 | auto *name_cmp |
4333 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4334 | |
3b00ef10 TT |
4335 | const char *lang_name |
4336 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 4337 | |
3f563c84 PA |
4338 | /* Comparison function object for lower_bound that matches against a |
4339 | given symbol name. */ | |
4340 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4341 | const char *name) | |
4342 | { | |
5c58de74 | 4343 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4344 | const char *elem_name = elem_qualified + elem.name_offset; |
4345 | return name_cmp (elem_name, name) < 0; | |
4346 | }; | |
4347 | ||
4348 | /* Comparison function object for upper_bound that matches against a | |
4349 | given symbol name. */ | |
4350 | auto lookup_compare_upper = [&] (const char *name, | |
4351 | const name_component &elem) | |
4352 | { | |
5c58de74 | 4353 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4354 | const char *elem_name = elem_qualified + elem.name_offset; |
4355 | return name_cmp (name, elem_name) < 0; | |
4356 | }; | |
4357 | ||
5c58de74 PA |
4358 | auto begin = this->name_components.begin (); |
4359 | auto end = this->name_components.end (); | |
3f563c84 PA |
4360 | |
4361 | /* Find the lower bound. */ | |
4362 | auto lower = [&] () | |
4363 | { | |
3b00ef10 | 4364 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4365 | return begin; |
4366 | else | |
3b00ef10 | 4367 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4368 | } (); |
4369 | ||
4370 | /* Find the upper bound. */ | |
4371 | auto upper = [&] () | |
4372 | { | |
5c58de74 | 4373 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4374 | { |
e1ef7d7a PA |
4375 | /* In completion mode, we want UPPER to point past all |
4376 | symbols names that have the same prefix. I.e., with | |
4377 | these symbols, and completing "func": | |
4378 | ||
4379 | function << lower bound | |
4380 | function1 | |
4381 | other_function << upper bound | |
4382 | ||
4383 | We find the upper bound by looking for the insertion | |
4384 | point of "func"-with-last-character-incremented, | |
4385 | i.e. "fund". */ | |
3b00ef10 | 4386 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4387 | if (after.empty ()) |
3f563c84 | 4388 | return end; |
e6b2f5ef PA |
4389 | return std::lower_bound (lower, end, after.c_str (), |
4390 | lookup_compare_lower); | |
3f563c84 PA |
4391 | } |
4392 | else | |
3b00ef10 | 4393 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4394 | } (); |
4395 | ||
5c58de74 PA |
4396 | return {lower, upper}; |
4397 | } | |
4398 | ||
4399 | /* See declaration. */ | |
4400 | ||
4401 | void | |
44ed8f3e | 4402 | mapped_index_base::build_name_components () |
5c58de74 PA |
4403 | { |
4404 | if (!this->name_components.empty ()) | |
4405 | return; | |
4406 | ||
4407 | this->name_components_casing = case_sensitivity; | |
4408 | auto *name_cmp | |
4409 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4410 | ||
4411 | /* The code below only knows how to break apart components of C++ | |
4412 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4413 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4414 | auto count = this->symbol_name_count (); |
4415 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4416 | { |
44ed8f3e | 4417 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4418 | continue; |
4419 | ||
4420 | const char *name = this->symbol_name_at (idx); | |
4421 | ||
4422 | /* Add each name component to the name component table. */ | |
4423 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4424 | |
4425 | if (strstr (name, "::") != nullptr) | |
4426 | { | |
4427 | for (unsigned int current_len = cp_find_first_component (name); | |
4428 | name[current_len] != '\0'; | |
4429 | current_len += cp_find_first_component (name + current_len)) | |
4430 | { | |
4431 | gdb_assert (name[current_len] == ':'); | |
4432 | this->name_components.push_back ({previous_len, idx}); | |
4433 | /* Skip the '::'. */ | |
4434 | current_len += 2; | |
4435 | previous_len = current_len; | |
4436 | } | |
4437 | } | |
4438 | else | |
5c58de74 | 4439 | { |
3b00ef10 TT |
4440 | /* Handle the Ada encoded (aka mangled) form here. */ |
4441 | for (const char *iter = strstr (name, "__"); | |
4442 | iter != nullptr; | |
4443 | iter = strstr (iter, "__")) | |
4444 | { | |
4445 | this->name_components.push_back ({previous_len, idx}); | |
4446 | iter += 2; | |
4447 | previous_len = iter - name; | |
4448 | } | |
5c58de74 | 4449 | } |
3b00ef10 | 4450 | |
5c58de74 PA |
4451 | this->name_components.push_back ({previous_len, idx}); |
4452 | } | |
4453 | ||
4454 | /* Sort name_components elements by name. */ | |
4455 | auto name_comp_compare = [&] (const name_component &left, | |
4456 | const name_component &right) | |
4457 | { | |
4458 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4459 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4460 | ||
4461 | const char *left_name = left_qualified + left.name_offset; | |
4462 | const char *right_name = right_qualified + right.name_offset; | |
4463 | ||
4464 | return name_cmp (left_name, right_name) < 0; | |
4465 | }; | |
4466 | ||
4467 | std::sort (this->name_components.begin (), | |
4468 | this->name_components.end (), | |
4469 | name_comp_compare); | |
4470 | } | |
4471 | ||
4472 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4473 | mapped_index_base instead of the containing objfile. This is split |
4474 | to a separate function in order to be able to unit test the | |
4475 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4476 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4477 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4478 | |
4479 | static void | |
4480 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4481 | (mapped_index_base &index, |
5c58de74 PA |
4482 | const lookup_name_info &lookup_name_in, |
4483 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4484 | enum search_domain kind, | |
3b00ef10 | 4485 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4486 | { |
4487 | lookup_name_info lookup_name_without_params | |
4488 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4489 | |
4490 | /* Build the symbol name component sorted vector, if we haven't | |
4491 | yet. */ | |
4492 | index.build_name_components (); | |
4493 | ||
3f563c84 PA |
4494 | /* The same symbol may appear more than once in the range though. |
4495 | E.g., if we're looking for symbols that complete "w", and we have | |
4496 | a symbol named "w1::w2", we'll find the two name components for | |
4497 | that same symbol in the range. To be sure we only call the | |
4498 | callback once per symbol, we first collect the symbol name | |
4499 | indexes that matched in a temporary vector and ignore | |
4500 | duplicates. */ | |
4501 | std::vector<offset_type> matches; | |
3f563c84 | 4502 | |
3b00ef10 TT |
4503 | struct name_and_matcher |
4504 | { | |
4505 | symbol_name_matcher_ftype *matcher; | |
4506 | const std::string &name; | |
4507 | ||
4508 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4509 | { |
3b00ef10 TT |
4510 | return matcher == other.matcher && name == other.name; |
4511 | } | |
4512 | }; | |
4513 | ||
4514 | /* A vector holding all the different symbol name matchers, for all | |
4515 | languages. */ | |
4516 | std::vector<name_and_matcher> matchers; | |
4517 | ||
4518 | for (int i = 0; i < nr_languages; i++) | |
4519 | { | |
4520 | enum language lang_e = (enum language) i; | |
4521 | ||
4522 | const language_defn *lang = language_def (lang_e); | |
4523 | symbol_name_matcher_ftype *name_matcher | |
4524 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4525 | |
3b00ef10 TT |
4526 | name_and_matcher key { |
4527 | name_matcher, | |
4528 | lookup_name_without_params.language_lookup_name (lang_e) | |
4529 | }; | |
4530 | ||
4531 | /* Don't insert the same comparison routine more than once. | |
4532 | Note that we do this linear walk. This is not a problem in | |
4533 | practice because the number of supported languages is | |
4534 | low. */ | |
4535 | if (std::find (matchers.begin (), matchers.end (), key) | |
4536 | != matchers.end ()) | |
9291a0cd | 4537 | continue; |
3b00ef10 TT |
4538 | matchers.push_back (std::move (key)); |
4539 | ||
4540 | auto bounds | |
4541 | = index.find_name_components_bounds (lookup_name_without_params, | |
4542 | lang_e); | |
4543 | ||
4544 | /* Now for each symbol name in range, check to see if we have a name | |
4545 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4546 | ||
4547 | for (; bounds.first != bounds.second; ++bounds.first) | |
4548 | { | |
4549 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4550 | ||
4551 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4552 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4553 | continue; | |
9291a0cd | 4554 | |
3b00ef10 TT |
4555 | matches.push_back (bounds.first->idx); |
4556 | } | |
3f563c84 PA |
4557 | } |
4558 | ||
4559 | std::sort (matches.begin (), matches.end ()); | |
4560 | ||
4561 | /* Finally call the callback, once per match. */ | |
4562 | ULONGEST prev = -1; | |
4563 | for (offset_type idx : matches) | |
4564 | { | |
4565 | if (prev != idx) | |
4566 | { | |
3b00ef10 TT |
4567 | if (!match_callback (idx)) |
4568 | break; | |
3f563c84 PA |
4569 | prev = idx; |
4570 | } | |
4571 | } | |
4572 | ||
4573 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4574 | (offset_type)-1 are both possible values. */ | |
4575 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4576 | } | |
4577 | ||
c62446b1 PA |
4578 | #if GDB_SELF_TEST |
4579 | ||
4580 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4581 | ||
a3c5fafd PA |
4582 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4583 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4584 | mapped_index_base interface. Builds an index from the symbol list | |
4585 | passed as parameter to the constructor. */ | |
4586 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4587 | { |
4588 | public: | |
a3c5fafd PA |
4589 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4590 | : m_symbol_table (symbols) | |
c62446b1 PA |
4591 | {} |
4592 | ||
a3c5fafd | 4593 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4594 | |
a3c5fafd | 4595 | /* Return the number of names in the symbol table. */ |
632e107b | 4596 | size_t symbol_name_count () const override |
c62446b1 | 4597 | { |
a3c5fafd | 4598 | return m_symbol_table.size (); |
c62446b1 PA |
4599 | } |
4600 | ||
a3c5fafd | 4601 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4602 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4603 | { |
4604 | return m_symbol_table[idx]; | |
4605 | } | |
c62446b1 | 4606 | |
a3c5fafd PA |
4607 | private: |
4608 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4609 | }; |
4610 | ||
4611 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4612 | string, to pass to print routines. */ | |
4613 | ||
4614 | static const char * | |
4615 | string_or_null (const char *str) | |
4616 | { | |
4617 | return str != NULL ? str : "<null>"; | |
4618 | } | |
4619 | ||
4620 | /* Check if a lookup_name_info built from | |
4621 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4622 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4623 | matching order. If no match expected, then an empty list is | |
4624 | specified. Returns true on success. On failure prints a warning | |
4625 | indicating the file:line that failed, and returns false. */ | |
4626 | ||
4627 | static bool | |
4628 | check_match (const char *file, int line, | |
4629 | mock_mapped_index &mock_index, | |
4630 | const char *name, symbol_name_match_type match_type, | |
4631 | bool completion_mode, | |
4632 | std::initializer_list<const char *> expected_list) | |
4633 | { | |
4634 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4635 | ||
4636 | bool matched = true; | |
4637 | ||
4638 | auto mismatch = [&] (const char *expected_str, | |
4639 | const char *got) | |
4640 | { | |
4641 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4642 | "expected=\"%s\", got=\"%s\"\n"), | |
4643 | file, line, | |
4644 | (match_type == symbol_name_match_type::FULL | |
4645 | ? "FULL" : "WILD"), | |
4646 | name, string_or_null (expected_str), string_or_null (got)); | |
4647 | matched = false; | |
4648 | }; | |
4649 | ||
4650 | auto expected_it = expected_list.begin (); | |
4651 | auto expected_end = expected_list.end (); | |
4652 | ||
a3c5fafd | 4653 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4654 | NULL, ALL_DOMAIN, |
4655 | [&] (offset_type idx) | |
4656 | { | |
a3c5fafd | 4657 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4658 | const char *expected_str |
4659 | = expected_it == expected_end ? NULL : *expected_it++; | |
4660 | ||
4661 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4662 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4663 | return true; |
c62446b1 PA |
4664 | }); |
4665 | ||
4666 | const char *expected_str | |
4667 | = expected_it == expected_end ? NULL : *expected_it++; | |
4668 | if (expected_str != NULL) | |
4669 | mismatch (expected_str, NULL); | |
4670 | ||
4671 | return matched; | |
4672 | } | |
4673 | ||
4674 | /* The symbols added to the mock mapped_index for testing (in | |
4675 | canonical form). */ | |
4676 | static const char *test_symbols[] = { | |
4677 | "function", | |
4678 | "std::bar", | |
4679 | "std::zfunction", | |
4680 | "std::zfunction2", | |
4681 | "w1::w2", | |
4682 | "ns::foo<char*>", | |
4683 | "ns::foo<int>", | |
4684 | "ns::foo<long>", | |
a20714ff PA |
4685 | "ns2::tmpl<int>::foo2", |
4686 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4687 | |
e1ef7d7a PA |
4688 | /* These are used to check that the increment-last-char in the |
4689 | matching algorithm for completion doesn't match "t1_fund" when | |
4690 | completing "t1_func". */ | |
4691 | "t1_func", | |
4692 | "t1_func1", | |
4693 | "t1_fund", | |
4694 | "t1_fund1", | |
4695 | ||
4696 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4697 | cp-name-parser understands this as a single identifier ("função" | |
4698 | is "function" in PT). */ | |
4699 | u8"u8função", | |
4700 | ||
4701 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4702 | "yfunc\377", | |
4703 | ||
4704 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4705 | "\377", | |
4706 | "\377\377123", | |
4707 | ||
c62446b1 PA |
4708 | /* A name with all sorts of complications. Starts with "z" to make |
4709 | it easier for the completion tests below. */ | |
4710 | #define Z_SYM_NAME \ | |
4711 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4712 | "::tuple<(anonymous namespace)::ui*, " \ | |
4713 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4714 | ||
4715 | Z_SYM_NAME | |
4716 | }; | |
4717 | ||
a3c5fafd PA |
4718 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4719 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4720 | in completion mode. */ | |
5c58de74 PA |
4721 | |
4722 | static bool | |
a3c5fafd | 4723 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4724 | const char *search_name, |
4725 | gdb::array_view<const char *> expected_syms) | |
4726 | { | |
4727 | lookup_name_info lookup_name (search_name, | |
4728 | symbol_name_match_type::FULL, true); | |
4729 | ||
3b00ef10 TT |
4730 | auto bounds = index.find_name_components_bounds (lookup_name, |
4731 | language_cplus); | |
5c58de74 PA |
4732 | |
4733 | size_t distance = std::distance (bounds.first, bounds.second); | |
4734 | if (distance != expected_syms.size ()) | |
4735 | return false; | |
4736 | ||
4737 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4738 | { | |
4739 | auto nc_elem = bounds.first + exp_elem; | |
4740 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4741 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4742 | return false; | |
4743 | } | |
4744 | ||
4745 | return true; | |
4746 | } | |
4747 | ||
4748 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4749 | method. */ | |
4750 | ||
c62446b1 | 4751 | static void |
5c58de74 PA |
4752 | test_mapped_index_find_name_component_bounds () |
4753 | { | |
4754 | mock_mapped_index mock_index (test_symbols); | |
4755 | ||
a3c5fafd | 4756 | mock_index.build_name_components (); |
5c58de74 PA |
4757 | |
4758 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4759 | method in completion mode. */ | |
4760 | { | |
4761 | static const char *expected_syms[] = { | |
4762 | "t1_func", | |
4763 | "t1_func1", | |
5c58de74 PA |
4764 | }; |
4765 | ||
a3c5fafd | 4766 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4767 | "t1_func", expected_syms)); |
4768 | } | |
4769 | ||
4770 | /* Check that the increment-last-char in the name matching algorithm | |
4771 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4772 | { | |
4773 | static const char *expected_syms1[] = { | |
4774 | "\377", | |
4775 | "\377\377123", | |
4776 | }; | |
a3c5fafd | 4777 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4778 | "\377", expected_syms1)); |
4779 | ||
4780 | static const char *expected_syms2[] = { | |
4781 | "\377\377123", | |
4782 | }; | |
a3c5fafd | 4783 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4784 | "\377\377", expected_syms2)); |
4785 | } | |
4786 | } | |
4787 | ||
4788 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4789 | ||
4790 | static void | |
4791 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4792 | { |
4793 | mock_mapped_index mock_index (test_symbols); | |
4794 | ||
4795 | /* We let all tests run until the end even if some fails, for debug | |
4796 | convenience. */ | |
4797 | bool any_mismatch = false; | |
4798 | ||
4799 | /* Create the expected symbols list (an initializer_list). Needed | |
4800 | because lists have commas, and we need to pass them to CHECK, | |
4801 | which is a macro. */ | |
4802 | #define EXPECT(...) { __VA_ARGS__ } | |
4803 | ||
4804 | /* Wrapper for check_match that passes down the current | |
4805 | __FILE__/__LINE__. */ | |
4806 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4807 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4808 | mock_index, \ | |
4809 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4810 | EXPECTED_LIST) | |
4811 | ||
4812 | /* Identity checks. */ | |
4813 | for (const char *sym : test_symbols) | |
4814 | { | |
4815 | /* Should be able to match all existing symbols. */ | |
4816 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4817 | EXPECT (sym)); | |
4818 | ||
4819 | /* Should be able to match all existing symbols with | |
4820 | parameters. */ | |
4821 | std::string with_params = std::string (sym) + "(int)"; | |
4822 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4823 | EXPECT (sym)); | |
4824 | ||
4825 | /* Should be able to match all existing symbols with | |
4826 | parameters and qualifiers. */ | |
4827 | with_params = std::string (sym) + " ( int ) const"; | |
4828 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4829 | EXPECT (sym)); | |
4830 | ||
4831 | /* This should really find sym, but cp-name-parser.y doesn't | |
4832 | know about lvalue/rvalue qualifiers yet. */ | |
4833 | with_params = std::string (sym) + " ( int ) &&"; | |
4834 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4835 | {}); | |
4836 | } | |
4837 | ||
e1ef7d7a PA |
4838 | /* Check that the name matching algorithm for completion doesn't get |
4839 | confused with Latin1 'ÿ' / 0xff. */ | |
4840 | { | |
4841 | static const char str[] = "\377"; | |
4842 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4843 | EXPECT ("\377", "\377\377123")); | |
4844 | } | |
4845 | ||
4846 | /* Check that the increment-last-char in the matching algorithm for | |
4847 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4848 | { | |
4849 | static const char str[] = "t1_func"; | |
4850 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4851 | EXPECT ("t1_func", "t1_func1")); | |
4852 | } | |
4853 | ||
c62446b1 PA |
4854 | /* Check that completion mode works at each prefix of the expected |
4855 | symbol name. */ | |
4856 | { | |
4857 | static const char str[] = "function(int)"; | |
4858 | size_t len = strlen (str); | |
4859 | std::string lookup; | |
4860 | ||
4861 | for (size_t i = 1; i < len; i++) | |
4862 | { | |
4863 | lookup.assign (str, i); | |
4864 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4865 | EXPECT ("function")); | |
4866 | } | |
4867 | } | |
4868 | ||
4869 | /* While "w" is a prefix of both components, the match function | |
4870 | should still only be called once. */ | |
4871 | { | |
4872 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4873 | EXPECT ("w1::w2")); | |
a20714ff PA |
4874 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4875 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4876 | } |
4877 | ||
4878 | /* Same, with a "complicated" symbol. */ | |
4879 | { | |
4880 | static const char str[] = Z_SYM_NAME; | |
4881 | size_t len = strlen (str); | |
4882 | std::string lookup; | |
4883 | ||
4884 | for (size_t i = 1; i < len; i++) | |
4885 | { | |
4886 | lookup.assign (str, i); | |
4887 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4888 | EXPECT (Z_SYM_NAME)); | |
4889 | } | |
4890 | } | |
4891 | ||
4892 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4893 | { | |
4894 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4895 | {}); | |
4896 | } | |
4897 | ||
4898 | /* A complete symbol with parameters matches any overload, since the | |
4899 | index has no overload info. */ | |
4900 | { | |
4901 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4902 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4903 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4904 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4905 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4906 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4907 | } |
4908 | ||
4909 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4910 | template argument list. */ | |
4911 | { | |
4912 | static const char expected[] = "ns::foo<int>"; | |
4913 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4914 | EXPECT (expected)); | |
a20714ff PA |
4915 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4916 | EXPECT (expected)); | |
c62446b1 PA |
4917 | } |
4918 | ||
4919 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4920 | template argument list that includes a pointer. */ | |
4921 | { | |
4922 | static const char expected[] = "ns::foo<char*>"; | |
4923 | /* Try both completion and non-completion modes. */ | |
4924 | static const bool completion_mode[2] = {false, true}; | |
4925 | for (size_t i = 0; i < 2; i++) | |
4926 | { | |
4927 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4928 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4929 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4930 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4931 | |
4932 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4933 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4934 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4935 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4936 | } |
4937 | } | |
4938 | ||
4939 | { | |
4940 | /* Check method qualifiers are ignored. */ | |
4941 | static const char expected[] = "ns::foo<char*>"; | |
4942 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4943 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4944 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4945 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4946 | CHECK_MATCH ("foo < char * > ( int ) const", |
4947 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4948 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4949 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4950 | } |
4951 | ||
4952 | /* Test lookup names that don't match anything. */ | |
4953 | { | |
a20714ff PA |
4954 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4955 | {}); | |
4956 | ||
c62446b1 PA |
4957 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4958 | {}); | |
4959 | } | |
4960 | ||
a20714ff PA |
4961 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4962 | which should not be confused with a parameter list. */ | |
4963 | { | |
4964 | static const char *syms[] = { | |
4965 | "A::B::C", | |
4966 | "B::C", | |
4967 | "C", | |
4968 | "A :: B :: C ( int )", | |
4969 | "B :: C ( int )", | |
4970 | "C ( int )", | |
4971 | }; | |
4972 | ||
4973 | for (const char *s : syms) | |
4974 | { | |
4975 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4976 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4977 | } | |
4978 | } | |
4979 | ||
4980 | { | |
4981 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4982 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4983 | EXPECT (expected)); | |
4984 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4985 | EXPECT (expected)); | |
4986 | } | |
4987 | ||
c62446b1 PA |
4988 | SELF_CHECK (!any_mismatch); |
4989 | ||
4990 | #undef EXPECT | |
4991 | #undef CHECK_MATCH | |
4992 | } | |
4993 | ||
5c58de74 PA |
4994 | static void |
4995 | run_test () | |
4996 | { | |
4997 | test_mapped_index_find_name_component_bounds (); | |
4998 | test_dw2_expand_symtabs_matching_symbol (); | |
4999 | } | |
5000 | ||
c62446b1 PA |
5001 | }} // namespace selftests::dw2_expand_symtabs_matching |
5002 | ||
5003 | #endif /* GDB_SELF_TEST */ | |
5004 | ||
4b514bc8 JK |
5005 | /* If FILE_MATCHER is NULL or if PER_CU has |
5006 | dwarf2_per_cu_quick_data::MARK set (see | |
5007 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5008 | EXPANSION_NOTIFY on it. */ | |
5009 | ||
5010 | static void | |
5011 | dw2_expand_symtabs_matching_one | |
5012 | (struct dwarf2_per_cu_data *per_cu, | |
5013 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5014 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5015 | { | |
5016 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5017 | { | |
5018 | bool symtab_was_null | |
5019 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5020 | ||
58f0c718 | 5021 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
5022 | |
5023 | if (expansion_notify != NULL | |
5024 | && symtab_was_null | |
5025 | && per_cu->v.quick->compunit_symtab != NULL) | |
5026 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5027 | } | |
5028 | } | |
5029 | ||
3f563c84 PA |
5030 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5031 | matched, to expand corresponding CUs that were marked. IDX is the | |
5032 | index of the symbol name that matched. */ | |
5033 | ||
5034 | static void | |
5035 | dw2_expand_marked_cus | |
ed2dc618 | 5036 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5037 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5038 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5039 | search_domain kind) | |
5040 | { | |
3f563c84 PA |
5041 | offset_type *vec, vec_len, vec_idx; |
5042 | bool global_seen = false; | |
ed2dc618 | 5043 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5044 | |
61920122 | 5045 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5046 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5047 | vec_len = MAYBE_SWAP (vec[0]); |
5048 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5049 | { | |
61920122 PA |
5050 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5051 | /* This value is only valid for index versions >= 7. */ | |
5052 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5053 | gdb_index_symbol_kind symbol_kind = | |
5054 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5055 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5056 | /* Only check the symbol attributes if they're present. | |
5057 | Indices prior to version 7 don't record them, | |
5058 | and indices >= 7 may elide them for certain symbols | |
5059 | (gold does this). */ | |
5060 | int attrs_valid = | |
5061 | (index.version >= 7 | |
5062 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5063 | ||
5064 | /* Work around gold/15646. */ | |
5065 | if (attrs_valid) | |
9291a0cd | 5066 | { |
61920122 PA |
5067 | if (!is_static && global_seen) |
5068 | continue; | |
5069 | if (!is_static) | |
5070 | global_seen = true; | |
5071 | } | |
3190f0c6 | 5072 | |
61920122 PA |
5073 | /* Only check the symbol's kind if it has one. */ |
5074 | if (attrs_valid) | |
5075 | { | |
5076 | switch (kind) | |
8943b874 | 5077 | { |
61920122 PA |
5078 | case VARIABLES_DOMAIN: |
5079 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5080 | continue; | |
5081 | break; | |
5082 | case FUNCTIONS_DOMAIN: | |
5083 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5084 | continue; |
61920122 PA |
5085 | break; |
5086 | case TYPES_DOMAIN: | |
5087 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5088 | continue; | |
5089 | break; | |
59c35742 AB |
5090 | case MODULES_DOMAIN: |
5091 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
5092 | continue; | |
5093 | break; | |
61920122 PA |
5094 | default: |
5095 | break; | |
8943b874 | 5096 | } |
61920122 | 5097 | } |
8943b874 | 5098 | |
61920122 | 5099 | /* Don't crash on bad data. */ |
b76e467d | 5100 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5101 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5102 | { |
b98664d3 | 5103 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5104 | " [in module %s]"), |
5105 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5106 | continue; |
5107 | } | |
5108 | ||
ff4c9fec | 5109 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5110 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5111 | expansion_notify); | |
61920122 PA |
5112 | } |
5113 | } | |
5114 | ||
4b514bc8 JK |
5115 | /* If FILE_MATCHER is non-NULL, set all the |
5116 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5117 | that match FILE_MATCHER. */ | |
5118 | ||
61920122 | 5119 | static void |
4b514bc8 | 5120 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5121 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5122 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5123 | { |
4b514bc8 | 5124 | if (file_matcher == NULL) |
61920122 PA |
5125 | return; |
5126 | ||
4b514bc8 JK |
5127 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5128 | ||
5129 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5130 | htab_eq_pointer, | |
5131 | NULL, xcalloc, xfree)); | |
5132 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5133 | htab_eq_pointer, |
5134 | NULL, xcalloc, xfree)); | |
61920122 | 5135 | |
4b514bc8 JK |
5136 | /* The rule is CUs specify all the files, including those used by |
5137 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5138 | |
b76e467d | 5139 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5140 | { |
927aa2e7 JK |
5141 | QUIT; |
5142 | ||
5143 | per_cu->v.quick->mark = 0; | |
5144 | ||
5145 | /* We only need to look at symtabs not already expanded. */ | |
5146 | if (per_cu->v.quick->compunit_symtab) | |
5147 | continue; | |
5148 | ||
b76e467d | 5149 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5150 | if (file_data == NULL) |
5151 | continue; | |
5152 | ||
5153 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5154 | continue; | |
5155 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5156 | { | |
5157 | per_cu->v.quick->mark = 1; | |
5158 | continue; | |
5159 | } | |
5160 | ||
b76e467d | 5161 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5162 | { |
5163 | const char *this_real_name; | |
5164 | ||
5165 | if (file_matcher (file_data->file_names[j], false)) | |
5166 | { | |
5167 | per_cu->v.quick->mark = 1; | |
5168 | break; | |
5169 | } | |
5170 | ||
5171 | /* Before we invoke realpath, which can get expensive when many | |
5172 | files are involved, do a quick comparison of the basenames. */ | |
5173 | if (!basenames_may_differ | |
5174 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5175 | true)) | |
5176 | continue; | |
5177 | ||
5178 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5179 | if (file_matcher (this_real_name, false)) | |
5180 | { | |
5181 | per_cu->v.quick->mark = 1; | |
5182 | break; | |
5183 | } | |
5184 | } | |
5185 | ||
b76e467d SM |
5186 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5187 | ? visited_found.get () | |
5188 | : visited_not_found.get (), | |
5189 | file_data, INSERT); | |
927aa2e7 JK |
5190 | *slot = file_data; |
5191 | } | |
5192 | } | |
5193 | ||
5194 | static void | |
5195 | dw2_expand_symtabs_matching | |
5196 | (struct objfile *objfile, | |
5197 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5198 | const lookup_name_info &lookup_name, | |
5199 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5200 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5201 | enum search_domain kind) | |
5202 | { | |
ed2dc618 SM |
5203 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5204 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5205 | |
5206 | /* index_table is NULL if OBJF_READNOW. */ | |
5207 | if (!dwarf2_per_objfile->index_table) | |
5208 | return; | |
5209 | ||
ed2dc618 | 5210 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5211 | |
5212 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5213 | ||
5214 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5215 | symbol_matcher, | |
5216 | kind, [&] (offset_type idx) | |
5217 | { | |
ed2dc618 | 5218 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 5219 | expansion_notify, kind); |
3b00ef10 | 5220 | return true; |
927aa2e7 JK |
5221 | }); |
5222 | } | |
5223 | ||
5224 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5225 | symtab. */ | |
5226 | ||
5227 | static struct compunit_symtab * | |
5228 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5229 | CORE_ADDR pc) | |
5230 | { | |
5231 | int i; | |
5232 | ||
5233 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5234 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5235 | return cust; | |
5236 | ||
5237 | if (cust->includes == NULL) | |
5238 | return NULL; | |
5239 | ||
5240 | for (i = 0; cust->includes[i]; ++i) | |
5241 | { | |
5242 | struct compunit_symtab *s = cust->includes[i]; | |
5243 | ||
5244 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5245 | if (s != NULL) | |
5246 | return s; | |
5247 | } | |
5248 | ||
5249 | return NULL; | |
5250 | } | |
5251 | ||
5252 | static struct compunit_symtab * | |
5253 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5254 | struct bound_minimal_symbol msymbol, | |
5255 | CORE_ADDR pc, | |
5256 | struct obj_section *section, | |
5257 | int warn_if_readin) | |
5258 | { | |
5259 | struct dwarf2_per_cu_data *data; | |
5260 | struct compunit_symtab *result; | |
5261 | ||
d320c2b5 | 5262 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5263 | return NULL; |
5264 | ||
b3b3bada | 5265 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
5266 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5267 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5268 | if (!data) |
5269 | return NULL; | |
5270 | ||
5271 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5272 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5273 | paddress (get_objfile_arch (objfile), pc)); | |
5274 | ||
5275 | result | |
58f0c718 TT |
5276 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5277 | false), | |
927aa2e7 JK |
5278 | pc); |
5279 | gdb_assert (result != NULL); | |
5280 | return result; | |
5281 | } | |
5282 | ||
5283 | static void | |
5284 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5285 | void *data, int need_fullname) | |
5286 | { | |
ed2dc618 SM |
5287 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5288 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5289 | |
5290 | if (!dwarf2_per_objfile->filenames_cache) | |
5291 | { | |
5292 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5293 | ||
5294 | htab_up visited (htab_create_alloc (10, | |
5295 | htab_hash_pointer, htab_eq_pointer, | |
5296 | NULL, xcalloc, xfree)); | |
5297 | ||
5298 | /* The rule is CUs specify all the files, including those used | |
5299 | by any TU, so there's no need to scan TUs here. We can | |
5300 | ignore file names coming from already-expanded CUs. */ | |
5301 | ||
b76e467d | 5302 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5303 | { |
927aa2e7 JK |
5304 | if (per_cu->v.quick->compunit_symtab) |
5305 | { | |
5306 | void **slot = htab_find_slot (visited.get (), | |
5307 | per_cu->v.quick->file_names, | |
5308 | INSERT); | |
5309 | ||
5310 | *slot = per_cu->v.quick->file_names; | |
5311 | } | |
5312 | } | |
5313 | ||
b76e467d | 5314 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5315 | { |
927aa2e7 JK |
5316 | /* We only need to look at symtabs not already expanded. */ |
5317 | if (per_cu->v.quick->compunit_symtab) | |
5318 | continue; | |
5319 | ||
b76e467d | 5320 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5321 | if (file_data == NULL) |
5322 | continue; | |
5323 | ||
b76e467d | 5324 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5325 | if (*slot) |
5326 | { | |
5327 | /* Already visited. */ | |
5328 | continue; | |
5329 | } | |
5330 | *slot = file_data; | |
5331 | ||
5332 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5333 | { | |
5334 | const char *filename = file_data->file_names[j]; | |
5335 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5336 | } | |
5337 | } | |
5338 | } | |
5339 | ||
5340 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5341 | { | |
5342 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5343 | ||
5344 | if (need_fullname) | |
5345 | this_real_name = gdb_realpath (filename); | |
5346 | (*fun) (filename, this_real_name.get (), data); | |
5347 | }); | |
5348 | } | |
5349 | ||
5350 | static int | |
5351 | dw2_has_symbols (struct objfile *objfile) | |
5352 | { | |
5353 | return 1; | |
5354 | } | |
5355 | ||
5356 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5357 | { | |
5358 | dw2_has_symbols, | |
5359 | dw2_find_last_source_symtab, | |
5360 | dw2_forget_cached_source_info, | |
5361 | dw2_map_symtabs_matching_filename, | |
5362 | dw2_lookup_symbol, | |
5363 | dw2_print_stats, | |
5364 | dw2_dump, | |
927aa2e7 JK |
5365 | dw2_expand_symtabs_for_function, |
5366 | dw2_expand_all_symtabs, | |
5367 | dw2_expand_symtabs_with_fullname, | |
5368 | dw2_map_matching_symbols, | |
5369 | dw2_expand_symtabs_matching, | |
5370 | dw2_find_pc_sect_compunit_symtab, | |
5371 | NULL, | |
5372 | dw2_map_symbol_filenames | |
5373 | }; | |
5374 | ||
5375 | /* DWARF-5 debug_names reader. */ | |
5376 | ||
5377 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5378 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5379 | ||
5380 | /* A helper function that reads the .debug_names section in SECTION | |
5381 | and fills in MAP. FILENAME is the name of the file containing the | |
5382 | section; it is used for error reporting. | |
5383 | ||
5384 | Returns true if all went well, false otherwise. */ | |
5385 | ||
5386 | static bool | |
5387 | read_debug_names_from_section (struct objfile *objfile, | |
5388 | const char *filename, | |
5389 | struct dwarf2_section_info *section, | |
5390 | mapped_debug_names &map) | |
5391 | { | |
5392 | if (dwarf2_section_empty_p (section)) | |
5393 | return false; | |
5394 | ||
5395 | /* Older elfutils strip versions could keep the section in the main | |
5396 | executable while splitting it for the separate debug info file. */ | |
5397 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5398 | return false; | |
5399 | ||
5400 | dwarf2_read_section (objfile, section); | |
5401 | ||
5402 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5403 | ||
5404 | const gdb_byte *addr = section->buffer; | |
5405 | ||
5406 | bfd *const abfd = get_section_bfd_owner (section); | |
5407 | ||
5408 | unsigned int bytes_read; | |
5409 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5410 | addr += bytes_read; | |
5411 | ||
5412 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5413 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5414 | if (bytes_read + length != section->size) | |
5415 | { | |
5416 | /* There may be multiple per-CU indices. */ | |
5417 | warning (_("Section .debug_names in %s length %s does not match " | |
5418 | "section length %s, ignoring .debug_names."), | |
5419 | filename, plongest (bytes_read + length), | |
5420 | pulongest (section->size)); | |
5421 | return false; | |
5422 | } | |
5423 | ||
5424 | /* The version number. */ | |
5425 | uint16_t version = read_2_bytes (abfd, addr); | |
5426 | addr += 2; | |
5427 | if (version != 5) | |
5428 | { | |
5429 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5430 | "ignoring .debug_names."), | |
5431 | filename, version); | |
5432 | return false; | |
5433 | } | |
5434 | ||
5435 | /* Padding. */ | |
5436 | uint16_t padding = read_2_bytes (abfd, addr); | |
5437 | addr += 2; | |
5438 | if (padding != 0) | |
5439 | { | |
5440 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5441 | "ignoring .debug_names."), | |
5442 | filename, padding); | |
5443 | return false; | |
5444 | } | |
5445 | ||
5446 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5447 | map.cu_count = read_4_bytes (abfd, addr); | |
5448 | addr += 4; | |
5449 | ||
5450 | /* local_type_unit_count - The number of TUs in the local TU | |
5451 | list. */ | |
5452 | map.tu_count = read_4_bytes (abfd, addr); | |
5453 | addr += 4; | |
5454 | ||
5455 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5456 | list. */ | |
5457 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5458 | addr += 4; | |
5459 | if (foreign_tu_count != 0) | |
5460 | { | |
5461 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5462 | "ignoring .debug_names."), | |
5463 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5464 | return false; | |
5465 | } | |
5466 | ||
5467 | /* bucket_count - The number of hash buckets in the hash lookup | |
5468 | table. */ | |
5469 | map.bucket_count = read_4_bytes (abfd, addr); | |
5470 | addr += 4; | |
5471 | ||
5472 | /* name_count - The number of unique names in the index. */ | |
5473 | map.name_count = read_4_bytes (abfd, addr); | |
5474 | addr += 4; | |
5475 | ||
5476 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5477 | table. */ | |
5478 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5479 | addr += 4; | |
5480 | ||
5481 | /* augmentation_string_size - The size in bytes of the augmentation | |
5482 | string. This value is rounded up to a multiple of 4. */ | |
5483 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5484 | addr += 4; | |
5485 | map.augmentation_is_gdb = ((augmentation_string_size | |
5486 | == sizeof (dwarf5_augmentation)) | |
5487 | && memcmp (addr, dwarf5_augmentation, | |
5488 | sizeof (dwarf5_augmentation)) == 0); | |
5489 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5490 | addr += augmentation_string_size; | |
5491 | ||
5492 | /* List of CUs */ | |
5493 | map.cu_table_reordered = addr; | |
5494 | addr += map.cu_count * map.offset_size; | |
5495 | ||
5496 | /* List of Local TUs */ | |
5497 | map.tu_table_reordered = addr; | |
5498 | addr += map.tu_count * map.offset_size; | |
5499 | ||
5500 | /* Hash Lookup Table */ | |
5501 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5502 | addr += map.bucket_count * 4; | |
5503 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5504 | addr += map.name_count * 4; | |
5505 | ||
5506 | /* Name Table */ | |
5507 | map.name_table_string_offs_reordered = addr; | |
5508 | addr += map.name_count * map.offset_size; | |
5509 | map.name_table_entry_offs_reordered = addr; | |
5510 | addr += map.name_count * map.offset_size; | |
5511 | ||
5512 | const gdb_byte *abbrev_table_start = addr; | |
5513 | for (;;) | |
5514 | { | |
927aa2e7 JK |
5515 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5516 | addr += bytes_read; | |
5517 | if (index_num == 0) | |
5518 | break; | |
5519 | ||
5520 | const auto insertpair | |
5521 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5522 | if (!insertpair.second) | |
5523 | { | |
5524 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5525 | "ignoring .debug_names."), | |
5526 | filename, pulongest (index_num)); | |
5527 | return false; | |
5528 | } | |
5529 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5530 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5531 | addr += bytes_read; | |
5532 | ||
5533 | for (;;) | |
5534 | { | |
5535 | mapped_debug_names::index_val::attr attr; | |
5536 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5537 | addr += bytes_read; | |
5538 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5539 | addr += bytes_read; | |
5540 | if (attr.form == DW_FORM_implicit_const) | |
5541 | { | |
5542 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5543 | &bytes_read); | |
5544 | addr += bytes_read; | |
5545 | } | |
5546 | if (attr.dw_idx == 0 && attr.form == 0) | |
5547 | break; | |
5548 | indexval.attr_vec.push_back (std::move (attr)); | |
5549 | } | |
5550 | } | |
5551 | if (addr != abbrev_table_start + abbrev_table_size) | |
5552 | { | |
5553 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5554 | "of size %s vs. written as %u, ignoring .debug_names."), |
5555 | filename, plongest (addr - abbrev_table_start), | |
5556 | abbrev_table_size); | |
927aa2e7 JK |
5557 | return false; |
5558 | } | |
5559 | map.entry_pool = addr; | |
5560 | ||
5561 | return true; | |
5562 | } | |
5563 | ||
5564 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5565 | list. */ | |
5566 | ||
5567 | static void | |
ed2dc618 | 5568 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5569 | const mapped_debug_names &map, |
5570 | dwarf2_section_info §ion, | |
b76e467d | 5571 | bool is_dwz) |
927aa2e7 JK |
5572 | { |
5573 | sect_offset sect_off_prev; | |
5574 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5575 | { | |
5576 | sect_offset sect_off_next; | |
5577 | if (i < map.cu_count) | |
5578 | { | |
5579 | sect_off_next | |
5580 | = (sect_offset) (extract_unsigned_integer | |
5581 | (map.cu_table_reordered + i * map.offset_size, | |
5582 | map.offset_size, | |
5583 | map.dwarf5_byte_order)); | |
5584 | } | |
5585 | else | |
5586 | sect_off_next = (sect_offset) section.size; | |
5587 | if (i >= 1) | |
5588 | { | |
5589 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5590 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5591 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5592 | sect_off_prev, length); |
b76e467d | 5593 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5594 | } |
5595 | sect_off_prev = sect_off_next; | |
5596 | } | |
5597 | } | |
5598 | ||
5599 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5600 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5601 | |
5602 | static void | |
ed2dc618 | 5603 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5604 | const mapped_debug_names &map, |
5605 | const mapped_debug_names &dwz_map) | |
5606 | { | |
b76e467d SM |
5607 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5608 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5609 | |
ed2dc618 SM |
5610 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5611 | dwarf2_per_objfile->info, | |
b76e467d | 5612 | false /* is_dwz */); |
927aa2e7 JK |
5613 | |
5614 | if (dwz_map.cu_count == 0) | |
5615 | return; | |
5616 | ||
ed2dc618 SM |
5617 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5618 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5619 | true /* is_dwz */); |
927aa2e7 JK |
5620 | } |
5621 | ||
5622 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5623 | elements of all the CUs and return true. Otherwise, return false. */ | |
5624 | ||
5625 | static bool | |
ed2dc618 | 5626 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5627 | { |
22ca247e TT |
5628 | std::unique_ptr<mapped_debug_names> map |
5629 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5630 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5631 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5632 | |
5633 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5634 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5635 | *map)) |
927aa2e7 JK |
5636 | return false; |
5637 | ||
5638 | /* Don't use the index if it's empty. */ | |
22ca247e | 5639 | if (map->name_count == 0) |
927aa2e7 JK |
5640 | return false; |
5641 | ||
5642 | /* If there is a .dwz file, read it so we can get its CU list as | |
5643 | well. */ | |
ed2dc618 | 5644 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5645 | if (dwz != NULL) |
5646 | { | |
5647 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5648 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5649 | &dwz->debug_names, dwz_map)) |
5650 | { | |
5651 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5652 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5653 | return false; |
5654 | } | |
5655 | } | |
5656 | ||
22ca247e | 5657 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5658 | |
22ca247e | 5659 | if (map->tu_count != 0) |
927aa2e7 JK |
5660 | { |
5661 | /* We can only handle a single .debug_types when we have an | |
5662 | index. */ | |
fd5866f6 | 5663 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5664 | return false; |
5665 | ||
fd5866f6 | 5666 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5667 | |
5668 | create_signatured_type_table_from_debug_names | |
22ca247e | 5669 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5670 | } |
5671 | ||
ed2dc618 SM |
5672 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5673 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5674 | |
22ca247e | 5675 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5676 | dwarf2_per_objfile->using_index = 1; |
5677 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5678 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5679 | |
5680 | return true; | |
5681 | } | |
5682 | ||
927aa2e7 JK |
5683 | /* Type used to manage iterating over all CUs looking for a symbol for |
5684 | .debug_names. */ | |
5685 | ||
5686 | class dw2_debug_names_iterator | |
5687 | { | |
5688 | public: | |
927aa2e7 | 5689 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5690 | gdb::optional<block_enum> block_index, |
5691 | domain_enum domain, | |
927aa2e7 | 5692 | const char *name) |
2b79f376 | 5693 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5694 | m_addr (find_vec_in_debug_names (map, name)) |
5695 | {} | |
5696 | ||
5697 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5698 | search_domain search, uint32_t namei) | |
5699 | : m_map (map), | |
5700 | m_search (search), | |
5701 | m_addr (find_vec_in_debug_names (map, namei)) | |
5702 | {} | |
5703 | ||
3b00ef10 TT |
5704 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5705 | block_enum block_index, domain_enum domain, | |
5706 | uint32_t namei) | |
5707 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5708 | m_addr (find_vec_in_debug_names (map, namei)) | |
5709 | {} | |
5710 | ||
927aa2e7 JK |
5711 | /* Return the next matching CU or NULL if there are no more. */ |
5712 | dwarf2_per_cu_data *next (); | |
5713 | ||
5714 | private: | |
5715 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5716 | const char *name); | |
5717 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5718 | uint32_t namei); | |
5719 | ||
5720 | /* The internalized form of .debug_names. */ | |
5721 | const mapped_debug_names &m_map; | |
5722 | ||
2b79f376 SM |
5723 | /* If set, only look for symbols that match that block. Valid values are |
5724 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5725 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5726 | |
5727 | /* The kind of symbol we're looking for. */ | |
5728 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5729 | const search_domain m_search = ALL_DOMAIN; | |
5730 | ||
5731 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5732 | not found. */ | |
5733 | const gdb_byte *m_addr; | |
5734 | }; | |
5735 | ||
5736 | const char * | |
5737 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5738 | { | |
5739 | const ULONGEST namei_string_offs | |
5740 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5741 | + namei * offset_size), | |
5742 | offset_size, | |
5743 | dwarf5_byte_order); | |
5744 | return read_indirect_string_at_offset | |
ed2dc618 | 5745 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5746 | } |
5747 | ||
5748 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5749 | found, return pointer to its pool data. If NAME cannot be found, | |
5750 | return NULL. */ | |
5751 | ||
5752 | const gdb_byte * | |
5753 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5754 | (const mapped_debug_names &map, const char *name) | |
5755 | { | |
5756 | int (*cmp) (const char *, const char *); | |
5757 | ||
54ee4252 | 5758 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5759 | if (current_language->la_language == language_cplus |
5760 | || current_language->la_language == language_fortran | |
5761 | || current_language->la_language == language_d) | |
5762 | { | |
5763 | /* NAME is already canonical. Drop any qualifiers as | |
5764 | .debug_names does not contain any. */ | |
5765 | ||
5766 | if (strchr (name, '(') != NULL) | |
5767 | { | |
54ee4252 | 5768 | without_params = cp_remove_params (name); |
927aa2e7 | 5769 | if (without_params != NULL) |
54ee4252 | 5770 | name = without_params.get (); |
927aa2e7 JK |
5771 | } |
5772 | } | |
5773 | ||
5774 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5775 | ||
5776 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5777 | uint32_t namei | |
5778 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5779 | (map.bucket_table_reordered | |
5780 | + (full_hash % map.bucket_count)), 4, | |
5781 | map.dwarf5_byte_order); | |
5782 | if (namei == 0) | |
5783 | return NULL; | |
5784 | --namei; | |
5785 | if (namei >= map.name_count) | |
5786 | { | |
b98664d3 | 5787 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5788 | "[in module %s]"), |
5789 | namei, map.name_count, | |
ed2dc618 | 5790 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5791 | return NULL; |
5792 | } | |
5793 | ||
5794 | for (;;) | |
5795 | { | |
5796 | const uint32_t namei_full_hash | |
5797 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5798 | (map.hash_table_reordered + namei), 4, | |
5799 | map.dwarf5_byte_order); | |
5800 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5801 | return NULL; | |
5802 | ||
5803 | if (full_hash == namei_full_hash) | |
5804 | { | |
5805 | const char *const namei_string = map.namei_to_name (namei); | |
5806 | ||
5807 | #if 0 /* An expensive sanity check. */ | |
5808 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5809 | { | |
b98664d3 | 5810 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5811 | "[in module %s]"), |
5812 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5813 | return NULL; | |
5814 | } | |
5815 | #endif | |
5816 | ||
5817 | if (cmp (namei_string, name) == 0) | |
5818 | { | |
5819 | const ULONGEST namei_entry_offs | |
5820 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5821 | + namei * map.offset_size), | |
5822 | map.offset_size, map.dwarf5_byte_order); | |
5823 | return map.entry_pool + namei_entry_offs; | |
5824 | } | |
5825 | } | |
5826 | ||
5827 | ++namei; | |
5828 | if (namei >= map.name_count) | |
5829 | return NULL; | |
5830 | } | |
5831 | } | |
5832 | ||
5833 | const gdb_byte * | |
5834 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5835 | (const mapped_debug_names &map, uint32_t namei) | |
5836 | { | |
5837 | if (namei >= map.name_count) | |
5838 | { | |
b98664d3 | 5839 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5840 | "[in module %s]"), |
5841 | namei, map.name_count, | |
ed2dc618 | 5842 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5843 | return NULL; |
5844 | } | |
5845 | ||
5846 | const ULONGEST namei_entry_offs | |
5847 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5848 | + namei * map.offset_size), | |
5849 | map.offset_size, map.dwarf5_byte_order); | |
5850 | return map.entry_pool + namei_entry_offs; | |
5851 | } | |
5852 | ||
5853 | /* See dw2_debug_names_iterator. */ | |
5854 | ||
5855 | dwarf2_per_cu_data * | |
5856 | dw2_debug_names_iterator::next () | |
5857 | { | |
5858 | if (m_addr == NULL) | |
5859 | return NULL; | |
5860 | ||
ed2dc618 SM |
5861 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5862 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5863 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5864 | |
5865 | again: | |
5866 | ||
5867 | unsigned int bytes_read; | |
5868 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5869 | m_addr += bytes_read; | |
5870 | if (abbrev == 0) | |
5871 | return NULL; | |
5872 | ||
5873 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5874 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5875 | { | |
b98664d3 | 5876 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5877 | "[in module %s]"), |
ed2dc618 | 5878 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5879 | return NULL; |
5880 | } | |
5881 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5882 | enum class symbol_linkage { |
5883 | unknown, | |
5884 | static_, | |
5885 | extern_, | |
23c13d42 | 5886 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5887 | dwarf2_per_cu_data *per_cu = NULL; |
5888 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5889 | { | |
5890 | ULONGEST ull; | |
5891 | switch (attr.form) | |
5892 | { | |
5893 | case DW_FORM_implicit_const: | |
5894 | ull = attr.implicit_const; | |
5895 | break; | |
5896 | case DW_FORM_flag_present: | |
5897 | ull = 1; | |
5898 | break; | |
5899 | case DW_FORM_udata: | |
5900 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5901 | m_addr += bytes_read; | |
5902 | break; | |
5903 | default: | |
b98664d3 | 5904 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5905 | dwarf_form_name (attr.form), |
ed2dc618 | 5906 | objfile_name (objfile)); |
927aa2e7 JK |
5907 | return NULL; |
5908 | } | |
5909 | switch (attr.dw_idx) | |
5910 | { | |
5911 | case DW_IDX_compile_unit: | |
5912 | /* Don't crash on bad data. */ | |
b76e467d | 5913 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5914 | { |
b98664d3 | 5915 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5916 | " [in module %s]"), |
5917 | pulongest (ull), | |
5918 | objfile_name (dwarf2_per_objfile->objfile)); | |
5919 | continue; | |
5920 | } | |
ff4c9fec | 5921 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5922 | break; |
8af5c486 JK |
5923 | case DW_IDX_type_unit: |
5924 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5925 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5926 | { |
b98664d3 | 5927 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5928 | " [in module %s]"), |
5929 | pulongest (ull), | |
5930 | objfile_name (dwarf2_per_objfile->objfile)); | |
5931 | continue; | |
5932 | } | |
ff4c9fec | 5933 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5934 | break; |
927aa2e7 JK |
5935 | case DW_IDX_GNU_internal: |
5936 | if (!m_map.augmentation_is_gdb) | |
5937 | break; | |
23c13d42 | 5938 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5939 | break; |
5940 | case DW_IDX_GNU_external: | |
5941 | if (!m_map.augmentation_is_gdb) | |
5942 | break; | |
23c13d42 | 5943 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5944 | break; |
5945 | } | |
5946 | } | |
5947 | ||
5948 | /* Skip if already read in. */ | |
5949 | if (per_cu->v.quick->compunit_symtab) | |
5950 | goto again; | |
5951 | ||
5952 | /* Check static vs global. */ | |
23c13d42 | 5953 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5954 | { |
2b79f376 | 5955 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5956 | const bool symbol_is_static = |
5957 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5958 | if (want_static != symbol_is_static) |
2b79f376 | 5959 | goto again; |
927aa2e7 JK |
5960 | } |
5961 | ||
5962 | /* Match dw2_symtab_iter_next, symbol_kind | |
5963 | and debug_names::psymbol_tag. */ | |
5964 | switch (m_domain) | |
5965 | { | |
5966 | case VAR_DOMAIN: | |
5967 | switch (indexval.dwarf_tag) | |
5968 | { | |
5969 | case DW_TAG_variable: | |
5970 | case DW_TAG_subprogram: | |
5971 | /* Some types are also in VAR_DOMAIN. */ | |
5972 | case DW_TAG_typedef: | |
5973 | case DW_TAG_structure_type: | |
5974 | break; | |
5975 | default: | |
5976 | goto again; | |
5977 | } | |
5978 | break; | |
5979 | case STRUCT_DOMAIN: | |
5980 | switch (indexval.dwarf_tag) | |
5981 | { | |
5982 | case DW_TAG_typedef: | |
5983 | case DW_TAG_structure_type: | |
5984 | break; | |
5985 | default: | |
5986 | goto again; | |
5987 | } | |
5988 | break; | |
5989 | case LABEL_DOMAIN: | |
5990 | switch (indexval.dwarf_tag) | |
5991 | { | |
5992 | case 0: | |
5993 | case DW_TAG_variable: | |
5994 | break; | |
5995 | default: | |
5996 | goto again; | |
5997 | } | |
5998 | break; | |
59c35742 AB |
5999 | case MODULE_DOMAIN: |
6000 | switch (indexval.dwarf_tag) | |
6001 | { | |
6002 | case DW_TAG_module: | |
6003 | break; | |
6004 | default: | |
6005 | goto again; | |
6006 | } | |
6007 | break; | |
927aa2e7 JK |
6008 | default: |
6009 | break; | |
6010 | } | |
6011 | ||
6012 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6013 | debug_names::psymbol_tag. */ | |
6014 | switch (m_search) | |
4b514bc8 | 6015 | { |
927aa2e7 JK |
6016 | case VARIABLES_DOMAIN: |
6017 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6018 | { |
927aa2e7 JK |
6019 | case DW_TAG_variable: |
6020 | break; | |
6021 | default: | |
6022 | goto again; | |
4b514bc8 | 6023 | } |
927aa2e7 JK |
6024 | break; |
6025 | case FUNCTIONS_DOMAIN: | |
6026 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6027 | { |
927aa2e7 JK |
6028 | case DW_TAG_subprogram: |
6029 | break; | |
6030 | default: | |
6031 | goto again; | |
4b514bc8 | 6032 | } |
927aa2e7 JK |
6033 | break; |
6034 | case TYPES_DOMAIN: | |
6035 | switch (indexval.dwarf_tag) | |
6036 | { | |
6037 | case DW_TAG_typedef: | |
6038 | case DW_TAG_structure_type: | |
6039 | break; | |
6040 | default: | |
6041 | goto again; | |
6042 | } | |
6043 | break; | |
59c35742 AB |
6044 | case MODULES_DOMAIN: |
6045 | switch (indexval.dwarf_tag) | |
6046 | { | |
6047 | case DW_TAG_module: | |
6048 | break; | |
6049 | default: | |
6050 | goto again; | |
6051 | } | |
927aa2e7 JK |
6052 | default: |
6053 | break; | |
4b514bc8 | 6054 | } |
927aa2e7 JK |
6055 | |
6056 | return per_cu; | |
4b514bc8 | 6057 | } |
61920122 | 6058 | |
927aa2e7 | 6059 | static struct compunit_symtab * |
c7f839cb | 6060 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 6061 | const char *name, domain_enum domain) |
4b514bc8 | 6062 | { |
ed2dc618 SM |
6063 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6064 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6065 | |
927aa2e7 JK |
6066 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6067 | if (!mapp) | |
61920122 | 6068 | { |
927aa2e7 JK |
6069 | /* index is NULL if OBJF_READNOW. */ |
6070 | return NULL; | |
6071 | } | |
6072 | const auto &map = *mapp; | |
9291a0cd | 6073 | |
2b79f376 | 6074 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 6075 | |
927aa2e7 JK |
6076 | struct compunit_symtab *stab_best = NULL; |
6077 | struct dwarf2_per_cu_data *per_cu; | |
6078 | while ((per_cu = iter.next ()) != NULL) | |
6079 | { | |
6080 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6081 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 6082 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 6083 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 6084 | |
927aa2e7 JK |
6085 | sym = block_find_symbol (block, name, domain, |
6086 | block_find_non_opaque_type_preferred, | |
6087 | &with_opaque); | |
9703b513 | 6088 | |
927aa2e7 JK |
6089 | /* Some caution must be observed with overloaded functions and |
6090 | methods, since the index will not contain any overload | |
6091 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6092 | |
927aa2e7 | 6093 | if (sym != NULL |
987012b8 | 6094 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
6095 | return stab; |
6096 | if (with_opaque != NULL | |
987012b8 | 6097 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 6098 | stab_best = stab; |
9703b513 | 6099 | |
927aa2e7 | 6100 | /* Keep looking through other CUs. */ |
9703b513 TT |
6101 | } |
6102 | ||
927aa2e7 | 6103 | return stab_best; |
9703b513 TT |
6104 | } |
6105 | ||
927aa2e7 JK |
6106 | /* This dumps minimal information about .debug_names. It is called |
6107 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6108 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6109 | |
927aa2e7 JK |
6110 | static void |
6111 | dw2_debug_names_dump (struct objfile *objfile) | |
6112 | { | |
ed2dc618 SM |
6113 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6114 | = get_dwarf2_per_objfile (objfile); | |
6115 | ||
927aa2e7 JK |
6116 | gdb_assert (dwarf2_per_objfile->using_index); |
6117 | printf_filtered (".debug_names:"); | |
6118 | if (dwarf2_per_objfile->debug_names_table) | |
6119 | printf_filtered (" exists\n"); | |
6120 | else | |
6121 | printf_filtered (" faked for \"readnow\"\n"); | |
6122 | printf_filtered ("\n"); | |
9291a0cd TT |
6123 | } |
6124 | ||
9291a0cd | 6125 | static void |
927aa2e7 JK |
6126 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6127 | const char *func_name) | |
9291a0cd | 6128 | { |
ed2dc618 SM |
6129 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6130 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6131 | |
927aa2e7 JK |
6132 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6133 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6134 | { |
927aa2e7 | 6135 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6136 | |
2b79f376 | 6137 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 6138 | |
927aa2e7 JK |
6139 | struct dwarf2_per_cu_data *per_cu; |
6140 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6141 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6142 | } |
6143 | } | |
24c79950 | 6144 | |
3b00ef10 TT |
6145 | static void |
6146 | dw2_debug_names_map_matching_symbols | |
6147 | (struct objfile *objfile, | |
6148 | const lookup_name_info &name, domain_enum domain, | |
6149 | int global, | |
6150 | gdb::function_view<symbol_found_callback_ftype> callback, | |
6151 | symbol_compare_ftype *ordered_compare) | |
6152 | { | |
6153 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
6154 | = get_dwarf2_per_objfile (objfile); | |
6155 | ||
6156 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
6157 | if (!dwarf2_per_objfile->debug_names_table) | |
6158 | return; | |
6159 | ||
6160 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
6161 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
6162 | ||
6163 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
6164 | auto matcher = [&] (const char *symname) | |
6165 | { | |
6166 | if (ordered_compare == nullptr) | |
6167 | return true; | |
6168 | return ordered_compare (symname, match_name) == 0; | |
6169 | }; | |
6170 | ||
6171 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
6172 | [&] (offset_type namei) | |
6173 | { | |
6174 | /* The name was matched, now expand corresponding CUs that were | |
6175 | marked. */ | |
6176 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
6177 | ||
6178 | struct dwarf2_per_cu_data *per_cu; | |
6179 | while ((per_cu = iter.next ()) != NULL) | |
6180 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
6181 | return true; | |
6182 | }); | |
6183 | ||
6184 | /* It's a shame we couldn't do this inside the | |
6185 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
6186 | that have already been expanded. Instead, this loop matches what | |
6187 | the psymtab code does. */ | |
6188 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
6189 | { | |
6190 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
6191 | if (cust != nullptr) | |
6192 | { | |
6193 | const struct block *block | |
6194 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
6195 | if (!iterate_over_symbols_terminated (block, name, | |
6196 | domain, callback)) | |
6197 | break; | |
6198 | } | |
6199 | } | |
6200 | } | |
6201 | ||
927aa2e7 JK |
6202 | static void |
6203 | dw2_debug_names_expand_symtabs_matching | |
6204 | (struct objfile *objfile, | |
6205 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6206 | const lookup_name_info &lookup_name, | |
6207 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6208 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6209 | enum search_domain kind) | |
6210 | { | |
ed2dc618 SM |
6211 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6212 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6213 | |
927aa2e7 JK |
6214 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6215 | if (!dwarf2_per_objfile->debug_names_table) | |
6216 | return; | |
9291a0cd | 6217 | |
ed2dc618 | 6218 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6219 | |
44ed8f3e | 6220 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6221 | |
44ed8f3e PA |
6222 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6223 | symbol_matcher, | |
6224 | kind, [&] (offset_type namei) | |
927aa2e7 | 6225 | { |
927aa2e7 JK |
6226 | /* The name was matched, now expand corresponding CUs that were |
6227 | marked. */ | |
6228 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6229 | |
927aa2e7 JK |
6230 | struct dwarf2_per_cu_data *per_cu; |
6231 | while ((per_cu = iter.next ()) != NULL) | |
6232 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6233 | expansion_notify); | |
3b00ef10 | 6234 | return true; |
44ed8f3e | 6235 | }); |
9291a0cd TT |
6236 | } |
6237 | ||
927aa2e7 | 6238 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6239 | { |
6240 | dw2_has_symbols, | |
6241 | dw2_find_last_source_symtab, | |
6242 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6243 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6244 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6245 | dw2_print_stats, |
927aa2e7 | 6246 | dw2_debug_names_dump, |
927aa2e7 | 6247 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6248 | dw2_expand_all_symtabs, |
652a8996 | 6249 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6250 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6251 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6252 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6253 | NULL, |
9291a0cd TT |
6254 | dw2_map_symbol_filenames |
6255 | }; | |
6256 | ||
4485a1c1 SM |
6257 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6258 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6259 | ||
6260 | template <typename T> | |
6261 | static gdb::array_view<const gdb_byte> | |
6262 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6263 | { | |
6264 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6265 | ||
6266 | if (dwarf2_section_empty_p (section)) | |
6267 | return {}; | |
6268 | ||
6269 | /* Older elfutils strip versions could keep the section in the main | |
6270 | executable while splitting it for the separate debug info file. */ | |
6271 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6272 | return {}; | |
6273 | ||
6274 | dwarf2_read_section (obj, section); | |
6275 | ||
8bebfcda PA |
6276 | /* dwarf2_section_info::size is a bfd_size_type, while |
6277 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6278 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6279 | is 32-bit. So we need an explicit narrowing conversion here. | |
6280 | This is fine, because it's impossible to allocate or mmap an | |
6281 | array/buffer larger than what size_t can represent. */ | |
6282 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6283 | } |
6284 | ||
87d6a7aa SM |
6285 | /* Lookup the index cache for the contents of the index associated to |
6286 | DWARF2_OBJ. */ | |
6287 | ||
6288 | static gdb::array_view<const gdb_byte> | |
6289 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6290 | { | |
6291 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6292 | if (build_id == nullptr) | |
6293 | return {}; | |
6294 | ||
6295 | return global_index_cache.lookup_gdb_index (build_id, | |
6296 | &dwarf2_obj->index_cache_res); | |
6297 | } | |
6298 | ||
6299 | /* Same as the above, but for DWZ. */ | |
6300 | ||
6301 | static gdb::array_view<const gdb_byte> | |
6302 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6303 | { | |
6304 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6305 | if (build_id == nullptr) | |
6306 | return {}; | |
6307 | ||
6308 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6309 | } | |
6310 | ||
3c0aa29a | 6311 | /* See symfile.h. */ |
9291a0cd | 6312 | |
3c0aa29a PA |
6313 | bool |
6314 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6315 | { |
ed2dc618 SM |
6316 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6317 | = get_dwarf2_per_objfile (objfile); | |
6318 | ||
9291a0cd TT |
6319 | /* If we're about to read full symbols, don't bother with the |
6320 | indices. In this case we also don't care if some other debug | |
6321 | format is making psymtabs, because they are all about to be | |
6322 | expanded anyway. */ | |
6323 | if ((objfile->flags & OBJF_READNOW)) | |
6324 | { | |
9291a0cd | 6325 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6326 | create_all_comp_units (dwarf2_per_objfile); |
6327 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6328 | dwarf2_per_objfile->quick_file_names_table |
6329 | = create_quick_file_names_table | |
6330 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6331 | |
b76e467d | 6332 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6333 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6334 | { |
ff4c9fec | 6335 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6336 | |
e254ef6a DE |
6337 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6338 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6339 | } |
6340 | ||
6341 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6342 | these functions will be no-ops because we will have expanded | |
6343 | all symtabs. */ | |
3c0aa29a PA |
6344 | *index_kind = dw_index_kind::GDB_INDEX; |
6345 | return true; | |
9291a0cd TT |
6346 | } |
6347 | ||
ed2dc618 | 6348 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6349 | { |
6350 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6351 | return true; | |
6352 | } | |
927aa2e7 | 6353 | |
4485a1c1 SM |
6354 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6355 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6356 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6357 | { |
6358 | *index_kind = dw_index_kind::GDB_INDEX; | |
6359 | return true; | |
6360 | } | |
9291a0cd | 6361 | |
87d6a7aa SM |
6362 | /* ... otherwise, try to find the index in the index cache. */ |
6363 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6364 | get_gdb_index_contents_from_cache, | |
6365 | get_gdb_index_contents_from_cache_dwz)) | |
6366 | { | |
6367 | global_index_cache.hit (); | |
6368 | *index_kind = dw_index_kind::GDB_INDEX; | |
6369 | return true; | |
6370 | } | |
6371 | ||
6372 | global_index_cache.miss (); | |
3c0aa29a | 6373 | return false; |
9291a0cd TT |
6374 | } |
6375 | ||
6376 | \f | |
6377 | ||
dce234bc PP |
6378 | /* Build a partial symbol table. */ |
6379 | ||
6380 | void | |
f29dff0a | 6381 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6382 | { |
ed2dc618 SM |
6383 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6384 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6385 | |
6eee24ce | 6386 | init_psymbol_list (objfile, 1024); |
c906108c | 6387 | |
a70b8144 | 6388 | try |
c9bf0622 TT |
6389 | { |
6390 | /* This isn't really ideal: all the data we allocate on the | |
6391 | objfile's obstack is still uselessly kept around. However, | |
6392 | freeing it seems unsafe. */ | |
906768f9 | 6393 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6394 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6395 | psymtabs.keep (); |
87d6a7aa SM |
6396 | |
6397 | /* (maybe) store an index in the cache. */ | |
6398 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6399 | } |
230d2906 | 6400 | catch (const gdb_exception_error &except) |
492d29ea PA |
6401 | { |
6402 | exception_print (gdb_stderr, except); | |
6403 | } | |
c906108c | 6404 | } |
c906108c | 6405 | |
1ce1cefd DE |
6406 | /* Return the total length of the CU described by HEADER. */ |
6407 | ||
6408 | static unsigned int | |
6409 | get_cu_length (const struct comp_unit_head *header) | |
6410 | { | |
6411 | return header->initial_length_size + header->length; | |
6412 | } | |
6413 | ||
9c541725 | 6414 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6415 | |
9c541725 PA |
6416 | static inline bool |
6417 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6418 | { |
9c541725 PA |
6419 | sect_offset bottom = cu_header->sect_off; |
6420 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6421 | |
9c541725 | 6422 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6423 | } |
6424 | ||
3b80fe9b DE |
6425 | /* Find the base address of the compilation unit for range lists and |
6426 | location lists. It will normally be specified by DW_AT_low_pc. | |
6427 | In DWARF-3 draft 4, the base address could be overridden by | |
6428 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6429 | compilation units with discontinuous ranges. */ | |
6430 | ||
6431 | static void | |
6432 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6433 | { | |
6434 | struct attribute *attr; | |
6435 | ||
6436 | cu->base_known = 0; | |
6437 | cu->base_address = 0; | |
6438 | ||
6439 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6440 | if (attr != nullptr) |
3b80fe9b | 6441 | { |
31aa7e4e | 6442 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6443 | cu->base_known = 1; |
6444 | } | |
6445 | else | |
6446 | { | |
6447 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6448 | if (attr != nullptr) |
3b80fe9b | 6449 | { |
31aa7e4e | 6450 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6451 | cu->base_known = 1; |
6452 | } | |
6453 | } | |
6454 | } | |
6455 | ||
93311388 | 6456 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6457 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6458 | NOTE: This leaves members offset, first_die_offset to be filled in |
6459 | by the caller. */ | |
107d2387 | 6460 | |
d521ce57 | 6461 | static const gdb_byte * |
107d2387 | 6462 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6463 | const gdb_byte *info_ptr, |
6464 | struct dwarf2_section_info *section, | |
6465 | rcuh_kind section_kind) | |
107d2387 AC |
6466 | { |
6467 | int signed_addr; | |
891d2f0b | 6468 | unsigned int bytes_read; |
43988095 JK |
6469 | const char *filename = get_section_file_name (section); |
6470 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6471 | |
6472 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6473 | cu_header->initial_length_size = bytes_read; | |
6474 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6475 | info_ptr += bytes_read; |
107d2387 | 6476 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6477 | if (cu_header->version < 2 || cu_header->version > 5) |
6478 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6479 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6480 | cu_header->version, filename); | |
107d2387 | 6481 | info_ptr += 2; |
43988095 JK |
6482 | if (cu_header->version < 5) |
6483 | switch (section_kind) | |
6484 | { | |
6485 | case rcuh_kind::COMPILE: | |
6486 | cu_header->unit_type = DW_UT_compile; | |
6487 | break; | |
6488 | case rcuh_kind::TYPE: | |
6489 | cu_header->unit_type = DW_UT_type; | |
6490 | break; | |
6491 | default: | |
6492 | internal_error (__FILE__, __LINE__, | |
6493 | _("read_comp_unit_head: invalid section_kind")); | |
6494 | } | |
6495 | else | |
6496 | { | |
6497 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6498 | (read_1_byte (abfd, info_ptr)); | |
6499 | info_ptr += 1; | |
6500 | switch (cu_header->unit_type) | |
6501 | { | |
6502 | case DW_UT_compile: | |
a084a2a6 AT |
6503 | case DW_UT_partial: |
6504 | case DW_UT_skeleton: | |
6505 | case DW_UT_split_compile: | |
43988095 JK |
6506 | if (section_kind != rcuh_kind::COMPILE) |
6507 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6508 | "(is %s, should be %s) [in module %s]"), |
6509 | dwarf_unit_type_name (cu_header->unit_type), | |
6510 | dwarf_unit_type_name (DW_UT_type), filename); | |
43988095 JK |
6511 | break; |
6512 | case DW_UT_type: | |
a084a2a6 | 6513 | case DW_UT_split_type: |
43988095 JK |
6514 | section_kind = rcuh_kind::TYPE; |
6515 | break; | |
6516 | default: | |
6517 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6518 | "(is %#04x, should be one of: %s, %s, %s, %s or %s) " |
6519 | "[in module %s]"), cu_header->unit_type, | |
6520 | dwarf_unit_type_name (DW_UT_compile), | |
6521 | dwarf_unit_type_name (DW_UT_skeleton), | |
6522 | dwarf_unit_type_name (DW_UT_split_compile), | |
6523 | dwarf_unit_type_name (DW_UT_type), | |
6524 | dwarf_unit_type_name (DW_UT_split_type), filename); | |
43988095 JK |
6525 | } |
6526 | ||
6527 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6528 | info_ptr += 1; | |
6529 | } | |
9c541725 PA |
6530 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6531 | cu_header, | |
6532 | &bytes_read); | |
613e1657 | 6533 | info_ptr += bytes_read; |
43988095 JK |
6534 | if (cu_header->version < 5) |
6535 | { | |
6536 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6537 | info_ptr += 1; | |
6538 | } | |
107d2387 AC |
6539 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6540 | if (signed_addr < 0) | |
8e65ff28 | 6541 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6542 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6543 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6544 | |
a084a2a6 AT |
6545 | bool header_has_signature = section_kind == rcuh_kind::TYPE |
6546 | || cu_header->unit_type == DW_UT_skeleton | |
6547 | || cu_header->unit_type == DW_UT_split_compile; | |
43988095 | 6548 | |
a084a2a6 AT |
6549 | if (header_has_signature) |
6550 | { | |
43988095 JK |
6551 | cu_header->signature = read_8_bytes (abfd, info_ptr); |
6552 | info_ptr += 8; | |
a084a2a6 | 6553 | } |
43988095 | 6554 | |
a084a2a6 AT |
6555 | if (section_kind == rcuh_kind::TYPE) |
6556 | { | |
6557 | LONGEST type_offset; | |
43988095 JK |
6558 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); |
6559 | info_ptr += bytes_read; | |
9c541725 PA |
6560 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6561 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6562 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6563 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6564 | filename); | |
6565 | } | |
6566 | ||
107d2387 AC |
6567 | return info_ptr; |
6568 | } | |
6569 | ||
36586728 TT |
6570 | /* Helper function that returns the proper abbrev section for |
6571 | THIS_CU. */ | |
6572 | ||
6573 | static struct dwarf2_section_info * | |
6574 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6575 | { | |
6576 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6577 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6578 | |
6579 | if (this_cu->is_dwz) | |
ed2dc618 | 6580 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6581 | else |
6582 | abbrev = &dwarf2_per_objfile->abbrev; | |
6583 | ||
6584 | return abbrev; | |
6585 | } | |
6586 | ||
9ff913ba DE |
6587 | /* Subroutine of read_and_check_comp_unit_head and |
6588 | read_and_check_type_unit_head to simplify them. | |
6589 | Perform various error checking on the header. */ | |
6590 | ||
6591 | static void | |
ed2dc618 SM |
6592 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6593 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6594 | struct dwarf2_section_info *section, |
6595 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6596 | { |
a32a8923 | 6597 | const char *filename = get_section_file_name (section); |
9ff913ba | 6598 | |
9c541725 | 6599 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6600 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6601 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6602 | "(offset %s + 6) [in module %s]"), | |
6603 | sect_offset_str (header->abbrev_sect_off), | |
6604 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6605 | filename); |
6606 | ||
9c541725 | 6607 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6608 | avoid potential 32-bit overflow. */ |
9c541725 | 6609 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6610 | > section->size) |
9c541725 | 6611 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6612 | "(offset %s + 0) [in module %s]"), |
6613 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6614 | filename); |
6615 | } | |
6616 | ||
6617 | /* Read in a CU/TU header and perform some basic error checking. | |
6618 | The contents of the header are stored in HEADER. | |
6619 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6620 | |
d521ce57 | 6621 | static const gdb_byte * |
ed2dc618 SM |
6622 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6623 | struct comp_unit_head *header, | |
9ff913ba | 6624 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6625 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6626 | const gdb_byte *info_ptr, |
43988095 | 6627 | rcuh_kind section_kind) |
72bf9492 | 6628 | { |
d521ce57 | 6629 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6630 | |
9c541725 | 6631 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6632 | |
43988095 | 6633 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6634 | |
9c541725 | 6635 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6636 | |
ed2dc618 SM |
6637 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6638 | abbrev_section); | |
9ff913ba DE |
6639 | |
6640 | return info_ptr; | |
348e048f DE |
6641 | } |
6642 | ||
f4dc4d17 DE |
6643 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6644 | ||
6645 | static sect_offset | |
ed2dc618 SM |
6646 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6647 | struct dwarf2_section_info *section, | |
9c541725 | 6648 | sect_offset sect_off) |
f4dc4d17 | 6649 | { |
a32a8923 | 6650 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6651 | const gdb_byte *info_ptr; |
ac298888 | 6652 | unsigned int initial_length_size, offset_size; |
43988095 | 6653 | uint16_t version; |
f4dc4d17 DE |
6654 | |
6655 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6656 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6657 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6658 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6659 | info_ptr += initial_length_size; |
6660 | ||
6661 | version = read_2_bytes (abfd, info_ptr); | |
6662 | info_ptr += 2; | |
6663 | if (version >= 5) | |
6664 | { | |
6665 | /* Skip unit type and address size. */ | |
6666 | info_ptr += 2; | |
6667 | } | |
6668 | ||
9c541725 | 6669 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6670 | } |
6671 | ||
aaa75496 JB |
6672 | /* Allocate a new partial symtab for file named NAME and mark this new |
6673 | partial symtab as being an include of PST. */ | |
6674 | ||
6675 | static void | |
891813be | 6676 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6677 | struct objfile *objfile) |
6678 | { | |
891813be | 6679 | dwarf2_psymtab *subpst = new dwarf2_psymtab (name, objfile); |
aaa75496 | 6680 | |
fbd9ab74 JK |
6681 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6682 | { | |
6683 | /* It shares objfile->objfile_obstack. */ | |
6684 | subpst->dirname = pst->dirname; | |
6685 | } | |
6686 | ||
a9342b62 | 6687 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6688 | subpst->dependencies[0] = pst; |
6689 | subpst->number_of_dependencies = 1; | |
6690 | ||
aaa75496 JB |
6691 | /* No private part is necessary for include psymtabs. This property |
6692 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6693 | the regular ones. */ |
891813be | 6694 | subpst->per_cu_data = nullptr; |
aaa75496 JB |
6695 | } |
6696 | ||
6697 | /* Read the Line Number Program data and extract the list of files | |
6698 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6699 | partial symtab for each of these included files. */ |
aaa75496 JB |
6700 | |
6701 | static void | |
6702 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6703 | struct die_info *die, |
891813be | 6704 | dwarf2_psymtab *pst) |
aaa75496 | 6705 | { |
fff8551c | 6706 | line_header_up lh; |
d85a05f0 | 6707 | struct attribute *attr; |
aaa75496 | 6708 | |
d85a05f0 | 6709 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6710 | if (attr != nullptr) |
9c541725 | 6711 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6712 | if (lh == NULL) |
6713 | return; /* No linetable, so no includes. */ | |
6714 | ||
79748972 TT |
6715 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6716 | that we pass in the raw text_low here; that is ok because we're | |
6717 | only decoding the line table to make include partial symtabs, and | |
6718 | so the addresses aren't really used. */ | |
4ae976d1 | 6719 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6720 | pst->raw_text_low (), 1); |
aaa75496 JB |
6721 | } |
6722 | ||
348e048f | 6723 | static hashval_t |
52dc124a | 6724 | hash_signatured_type (const void *item) |
348e048f | 6725 | { |
9a3c8263 SM |
6726 | const struct signatured_type *sig_type |
6727 | = (const struct signatured_type *) item; | |
9a619af0 | 6728 | |
348e048f | 6729 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6730 | return sig_type->signature; |
348e048f DE |
6731 | } |
6732 | ||
6733 | static int | |
52dc124a | 6734 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6735 | { |
9a3c8263 SM |
6736 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6737 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6738 | |
348e048f DE |
6739 | return lhs->signature == rhs->signature; |
6740 | } | |
6741 | ||
1fd400ff TT |
6742 | /* Allocate a hash table for signatured types. */ |
6743 | ||
6744 | static htab_t | |
673bfd45 | 6745 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6746 | { |
6747 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6748 | hash_signatured_type, |
6749 | eq_signatured_type, | |
1fd400ff TT |
6750 | NULL, |
6751 | &objfile->objfile_obstack, | |
6752 | hashtab_obstack_allocate, | |
6753 | dummy_obstack_deallocate); | |
6754 | } | |
6755 | ||
d467dd73 | 6756 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6757 | |
6758 | static int | |
d467dd73 | 6759 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6760 | { |
9a3c8263 | 6761 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6762 | std::vector<signatured_type *> *all_type_units |
6763 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6764 | |
b2bdb8cf | 6765 | all_type_units->push_back (sigt); |
1fd400ff TT |
6766 | |
6767 | return 1; | |
6768 | } | |
6769 | ||
78d4d2c5 | 6770 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6771 | and fill them into TYPES_HTAB. It will process only type units, |
6772 | therefore DW_UT_type. */ | |
c88ee1f0 | 6773 | |
78d4d2c5 | 6774 | static void |
ed2dc618 SM |
6775 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6776 | struct dwo_file *dwo_file, | |
43988095 JK |
6777 | dwarf2_section_info *section, htab_t &types_htab, |
6778 | rcuh_kind section_kind) | |
348e048f | 6779 | { |
3019eac3 | 6780 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6781 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6782 | bfd *abfd; |
6783 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6784 | |
4bdcc0c1 DE |
6785 | abbrev_section = (dwo_file != NULL |
6786 | ? &dwo_file->sections.abbrev | |
6787 | : &dwarf2_per_objfile->abbrev); | |
6788 | ||
b4f54984 | 6789 | if (dwarf_read_debug) |
43988095 JK |
6790 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6791 | get_section_name (section), | |
a32a8923 | 6792 | get_section_file_name (abbrev_section)); |
09406207 | 6793 | |
78d4d2c5 JK |
6794 | dwarf2_read_section (objfile, section); |
6795 | info_ptr = section->buffer; | |
348e048f | 6796 | |
78d4d2c5 JK |
6797 | if (info_ptr == NULL) |
6798 | return; | |
348e048f | 6799 | |
78d4d2c5 JK |
6800 | /* We can't set abfd until now because the section may be empty or |
6801 | not present, in which case the bfd is unknown. */ | |
6802 | abfd = get_section_bfd_owner (section); | |
348e048f | 6803 | |
c0ab21c2 TT |
6804 | /* We don't use cutu_reader here because we don't need to read |
6805 | any dies: the signature is in the header. */ | |
3019eac3 | 6806 | |
78d4d2c5 JK |
6807 | end_ptr = info_ptr + section->size; |
6808 | while (info_ptr < end_ptr) | |
6809 | { | |
78d4d2c5 JK |
6810 | struct signatured_type *sig_type; |
6811 | struct dwo_unit *dwo_tu; | |
6812 | void **slot; | |
6813 | const gdb_byte *ptr = info_ptr; | |
6814 | struct comp_unit_head header; | |
6815 | unsigned int length; | |
8b70b953 | 6816 | |
9c541725 | 6817 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6818 | |
a49dd8dd JK |
6819 | /* Initialize it due to a false compiler warning. */ |
6820 | header.signature = -1; | |
9c541725 | 6821 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6822 | |
78d4d2c5 JK |
6823 | /* We need to read the type's signature in order to build the hash |
6824 | table, but we don't need anything else just yet. */ | |
348e048f | 6825 | |
ed2dc618 | 6826 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6827 | abbrev_section, ptr, section_kind); |
348e048f | 6828 | |
78d4d2c5 | 6829 | length = get_cu_length (&header); |
6caca83c | 6830 | |
78d4d2c5 JK |
6831 | /* Skip dummy type units. */ |
6832 | if (ptr >= info_ptr + length | |
43988095 JK |
6833 | || peek_abbrev_code (abfd, ptr) == 0 |
6834 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6835 | { |
6836 | info_ptr += length; | |
6837 | continue; | |
6838 | } | |
dee91e82 | 6839 | |
78d4d2c5 JK |
6840 | if (types_htab == NULL) |
6841 | { | |
6842 | if (dwo_file) | |
6843 | types_htab = allocate_dwo_unit_table (objfile); | |
6844 | else | |
6845 | types_htab = allocate_signatured_type_table (objfile); | |
6846 | } | |
8b70b953 | 6847 | |
78d4d2c5 JK |
6848 | if (dwo_file) |
6849 | { | |
6850 | sig_type = NULL; | |
6851 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6852 | struct dwo_unit); | |
6853 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6854 | dwo_tu->signature = header.signature; |
9c541725 | 6855 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6856 | dwo_tu->section = section; |
9c541725 | 6857 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6858 | dwo_tu->length = length; |
6859 | } | |
6860 | else | |
6861 | { | |
6862 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6863 | The real type_offset is in the DWO file. */ | |
6864 | dwo_tu = NULL; | |
6865 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6866 | struct signatured_type); | |
43988095 | 6867 | sig_type->signature = header.signature; |
9c541725 | 6868 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6869 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6870 | sig_type->per_cu.is_debug_types = 1; |
6871 | sig_type->per_cu.section = section; | |
9c541725 | 6872 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6873 | sig_type->per_cu.length = length; |
6874 | } | |
6875 | ||
6876 | slot = htab_find_slot (types_htab, | |
6877 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6878 | INSERT); | |
6879 | gdb_assert (slot != NULL); | |
6880 | if (*slot != NULL) | |
6881 | { | |
9c541725 | 6882 | sect_offset dup_sect_off; |
0349ea22 | 6883 | |
3019eac3 DE |
6884 | if (dwo_file) |
6885 | { | |
78d4d2c5 JK |
6886 | const struct dwo_unit *dup_tu |
6887 | = (const struct dwo_unit *) *slot; | |
6888 | ||
9c541725 | 6889 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6890 | } |
6891 | else | |
6892 | { | |
78d4d2c5 JK |
6893 | const struct signatured_type *dup_tu |
6894 | = (const struct signatured_type *) *slot; | |
6895 | ||
9c541725 | 6896 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6897 | } |
8b70b953 | 6898 | |
b98664d3 | 6899 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6900 | " the entry at offset %s, signature %s"), |
6901 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6902 | hex_string (header.signature)); |
78d4d2c5 JK |
6903 | } |
6904 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6905 | |
78d4d2c5 | 6906 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6907 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6908 | sect_offset_str (sect_off), | |
43988095 | 6909 | hex_string (header.signature)); |
3019eac3 | 6910 | |
78d4d2c5 JK |
6911 | info_ptr += length; |
6912 | } | |
6913 | } | |
3019eac3 | 6914 | |
78d4d2c5 JK |
6915 | /* Create the hash table of all entries in the .debug_types |
6916 | (or .debug_types.dwo) section(s). | |
6917 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6918 | otherwise it is NULL. | |
b3c8eb43 | 6919 | |
78d4d2c5 | 6920 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6921 | |
78d4d2c5 | 6922 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6923 | |
78d4d2c5 | 6924 | static void |
ed2dc618 SM |
6925 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6926 | struct dwo_file *dwo_file, | |
fd5866f6 | 6927 | gdb::array_view<dwarf2_section_info> type_sections, |
78d4d2c5 JK |
6928 | htab_t &types_htab) |
6929 | { | |
fd5866f6 SM |
6930 | for (dwarf2_section_info §ion : type_sections) |
6931 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6932 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6933 | } |
6934 | ||
6935 | /* Create the hash table of all entries in the .debug_types section, | |
6936 | and initialize all_type_units. | |
6937 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6938 | otherwise non-zero. */ | |
6939 | ||
6940 | static int | |
ed2dc618 | 6941 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6942 | { |
78d4d2c5 | 6943 | htab_t types_htab = NULL; |
3019eac3 | 6944 | |
ed2dc618 SM |
6945 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6946 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6947 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6948 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6949 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6950 | if (types_htab == NULL) |
6951 | { | |
6952 | dwarf2_per_objfile->signatured_types = NULL; | |
6953 | return 0; | |
6954 | } | |
6955 | ||
348e048f DE |
6956 | dwarf2_per_objfile->signatured_types = types_htab; |
6957 | ||
b2bdb8cf SM |
6958 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6959 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6960 | ||
6961 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6962 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6963 | |
348e048f DE |
6964 | return 1; |
6965 | } | |
6966 | ||
6aa5f3a6 DE |
6967 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6968 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6969 | Otherwise we find one. */ | |
6970 | ||
6971 | static struct signatured_type * | |
ed2dc618 SM |
6972 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6973 | void **slot) | |
6aa5f3a6 DE |
6974 | { |
6975 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6976 | |
b2bdb8cf SM |
6977 | if (dwarf2_per_objfile->all_type_units.size () |
6978 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6979 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6980 | |
b2bdb8cf SM |
6981 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6982 | struct signatured_type); | |
6983 | ||
6984 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6985 | sig_type->signature = sig; |
6986 | sig_type->per_cu.is_debug_types = 1; | |
6987 | if (dwarf2_per_objfile->using_index) | |
6988 | { | |
6989 | sig_type->per_cu.v.quick = | |
6990 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6991 | struct dwarf2_per_cu_quick_data); | |
6992 | } | |
6993 | ||
6994 | if (slot == NULL) | |
6995 | { | |
6996 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6997 | sig_type, INSERT); | |
6998 | } | |
6999 | gdb_assert (*slot == NULL); | |
7000 | *slot = sig_type; | |
7001 | /* The rest of sig_type must be filled in by the caller. */ | |
7002 | return sig_type; | |
7003 | } | |
7004 | ||
a2ce51a0 DE |
7005 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7006 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7007 | ||
7008 | static void | |
ed2dc618 | 7009 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
7010 | struct signatured_type *sig_entry, |
7011 | struct dwo_unit *dwo_entry) | |
7012 | { | |
7ee85ab1 | 7013 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7014 | gdb_assert (! sig_entry->per_cu.queued); |
7015 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7016 | if (dwarf2_per_objfile->using_index) |
7017 | { | |
7018 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7019 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7020 | } |
7021 | else | |
7022 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7023 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7024 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7025 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7026 | gdb_assert (sig_entry->dwo_unit == NULL); |
7027 | ||
7028 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7029 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7030 | sig_entry->per_cu.length = dwo_entry->length; |
7031 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 7032 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
7033 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7034 | sig_entry->dwo_unit = dwo_entry; | |
7035 | } | |
7036 | ||
7037 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7038 | If we haven't read the TU yet, create the signatured_type data structure |
7039 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7040 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7041 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7042 | containing that CU. Otherwise we could end up reading several other DWO | |
7043 | files (due to comdat folding) to process the transitive closure of all the | |
7044 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7045 | type signature that it needs. | |
a2ce51a0 DE |
7046 | We only do this for .gdb_index because in the psymtab case we already have |
7047 | to read all the DWOs to build the type unit groups. */ | |
7048 | ||
7049 | static struct signatured_type * | |
7050 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7051 | { | |
518817b3 SM |
7052 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7053 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
7054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7055 | struct dwo_file *dwo_file; | |
7056 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7057 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7058 | void **slot; |
a2ce51a0 DE |
7059 | |
7060 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7061 | ||
6aa5f3a6 DE |
7062 | /* If TU skeletons have been removed then we may not have read in any |
7063 | TUs yet. */ | |
7064 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7065 | { | |
7066 | dwarf2_per_objfile->signatured_types | |
7067 | = allocate_signatured_type_table (objfile); | |
7068 | } | |
a2ce51a0 DE |
7069 | |
7070 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7071 | Use the global signatured_types array to do our own comdat-folding |
7072 | of types. If this is the first time we're reading this TU, and | |
7073 | the TU has an entry in .gdb_index, replace the recorded data from | |
7074 | .gdb_index with this TU. */ | |
a2ce51a0 | 7075 | |
a2ce51a0 | 7076 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7077 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7078 | &find_sig_entry, INSERT); | |
9a3c8263 | 7079 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7080 | |
7081 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7082 | read. Don't reassign the global entry to point to this DWO if that's |
7083 | the case. Also note that if the TU is already being read, it may not | |
7084 | have come from a DWO, the program may be a mix of Fission-compiled | |
7085 | code and non-Fission-compiled code. */ | |
7086 | ||
7087 | /* Have we already tried to read this TU? | |
7088 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7089 | needn't exist in the global table yet). */ | |
7090 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7091 | return sig_entry; |
7092 | ||
6aa5f3a6 DE |
7093 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7094 | dwo_unit of the TU itself. */ | |
7095 | dwo_file = cu->dwo_unit->dwo_file; | |
7096 | ||
a2ce51a0 DE |
7097 | /* Ok, this is the first time we're reading this TU. */ |
7098 | if (dwo_file->tus == NULL) | |
7099 | return NULL; | |
7100 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7101 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7102 | if (dwo_entry == NULL) |
7103 | return NULL; | |
7104 | ||
6aa5f3a6 DE |
7105 | /* If the global table doesn't have an entry for this TU, add one. */ |
7106 | if (sig_entry == NULL) | |
ed2dc618 | 7107 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7108 | |
ed2dc618 | 7109 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7110 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7111 | return sig_entry; |
7112 | } | |
7113 | ||
a2ce51a0 DE |
7114 | /* Subroutine of lookup_signatured_type. |
7115 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7116 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7117 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7118 | |
7119 | static struct signatured_type * | |
7120 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7121 | { | |
518817b3 SM |
7122 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7123 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7124 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7125 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7126 | struct dwo_unit *dwo_entry; |
7127 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7128 | void **slot; |
a2ce51a0 DE |
7129 | |
7130 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7131 | gdb_assert (dwp_file != NULL); | |
7132 | ||
6aa5f3a6 DE |
7133 | /* If TU skeletons have been removed then we may not have read in any |
7134 | TUs yet. */ | |
7135 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7136 | { |
6aa5f3a6 DE |
7137 | dwarf2_per_objfile->signatured_types |
7138 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7139 | } |
7140 | ||
6aa5f3a6 DE |
7141 | find_sig_entry.signature = sig; |
7142 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7143 | &find_sig_entry, INSERT); | |
9a3c8263 | 7144 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7145 | |
7146 | /* Have we already tried to read this TU? | |
7147 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7148 | needn't exist in the global table yet). */ | |
7149 | if (sig_entry != NULL) | |
7150 | return sig_entry; | |
7151 | ||
a2ce51a0 DE |
7152 | if (dwp_file->tus == NULL) |
7153 | return NULL; | |
ed2dc618 | 7154 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7155 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7156 | if (dwo_entry == NULL) |
7157 | return NULL; | |
7158 | ||
ed2dc618 SM |
7159 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7160 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7161 | |
a2ce51a0 DE |
7162 | return sig_entry; |
7163 | } | |
7164 | ||
380bca97 | 7165 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7166 | Returns NULL if signature SIG is not present in the table. |
7167 | It is up to the caller to complain about this. */ | |
348e048f DE |
7168 | |
7169 | static struct signatured_type * | |
a2ce51a0 | 7170 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7171 | { |
518817b3 SM |
7172 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7173 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7174 | |
a2ce51a0 DE |
7175 | if (cu->dwo_unit |
7176 | && dwarf2_per_objfile->using_index) | |
7177 | { | |
7178 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7179 | These cases require special processing. */ | |
ed2dc618 | 7180 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7181 | return lookup_dwo_signatured_type (cu, sig); |
7182 | else | |
7183 | return lookup_dwp_signatured_type (cu, sig); | |
7184 | } | |
7185 | else | |
7186 | { | |
7187 | struct signatured_type find_entry, *entry; | |
348e048f | 7188 | |
a2ce51a0 DE |
7189 | if (dwarf2_per_objfile->signatured_types == NULL) |
7190 | return NULL; | |
7191 | find_entry.signature = sig; | |
9a3c8263 SM |
7192 | entry = ((struct signatured_type *) |
7193 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7194 | return entry; |
7195 | } | |
348e048f | 7196 | } |
18a8505e AT |
7197 | |
7198 | /* Return the address base of the compile unit, which, if exists, is stored | |
7199 | either at the attribute DW_AT_GNU_addr_base, or DW_AT_addr_base. */ | |
7200 | static gdb::optional<ULONGEST> | |
7201 | lookup_addr_base (struct die_info *comp_unit_die) | |
7202 | { | |
7203 | struct attribute *attr; | |
7204 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_addr_base); | |
7205 | if (attr == nullptr) | |
7206 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_addr_base); | |
7207 | if (attr == nullptr) | |
7208 | return gdb::optional<ULONGEST> (); | |
7209 | return DW_UNSND (attr); | |
7210 | } | |
7211 | ||
7212 | /* Return range lists base of the compile unit, which, if exists, is stored | |
7213 | either at the attribute DW_AT_rnglists_base or DW_AT_GNU_ranges_base. */ | |
7214 | static ULONGEST | |
7215 | lookup_ranges_base (struct die_info *comp_unit_die) | |
7216 | { | |
7217 | struct attribute *attr; | |
7218 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_rnglists_base); | |
7219 | if (attr == nullptr) | |
7220 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_ranges_base); | |
7221 | if (attr == nullptr) | |
7222 | return 0; | |
7223 | return DW_UNSND (attr); | |
7224 | } | |
7225 | ||
42e7ad6c | 7226 | /* Low level DIE reading support. */ |
348e048f | 7227 | |
d85a05f0 DJ |
7228 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7229 | ||
7230 | static void | |
7231 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7232 | struct dwarf2_cu *cu, |
3019eac3 | 7233 | struct dwarf2_section_info *section, |
685af9cd TT |
7234 | struct dwo_file *dwo_file, |
7235 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7236 | { |
fceca515 | 7237 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7238 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7239 | reader->cu = cu; |
3019eac3 | 7240 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7241 | reader->die_section = section; |
7242 | reader->buffer = section->buffer; | |
f664829e | 7243 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7244 | reader->comp_dir = NULL; |
685af9cd | 7245 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7246 | } |
7247 | ||
c0ab21c2 | 7248 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7249 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 7250 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
7251 | already. |
7252 | ||
7253 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7254 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7255 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7256 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7257 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7258 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7259 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7260 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7261 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7262 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7263 | kept around for at least as long as *RESULT_READER. | |
7264 | ||
b0c7bfa9 DE |
7265 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7266 | ||
7267 | static int | |
7268 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7269 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7270 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7271 | const char *stub_comp_dir, |
b0c7bfa9 | 7272 | struct die_reader_specs *result_reader, |
d521ce57 | 7273 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7274 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7275 | int *result_has_children, |
7276 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7277 | { |
ed2dc618 | 7278 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7279 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7280 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7281 | bfd *abfd; |
d521ce57 | 7282 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7283 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7284 | int i,num_extra_attrs; | |
7285 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
7286 | struct die_info *comp_unit_die; |
7287 | ||
b0aeadb3 DE |
7288 | /* At most one of these may be provided. */ |
7289 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7290 | |
b0c7bfa9 DE |
7291 | /* These attributes aren't processed until later: |
7292 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7293 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7294 | referenced later. However, these attributes are found in the stub | |
7295 | which we won't have later. In order to not impose this complication | |
7296 | on the rest of the code, we read them here and copy them to the | |
7297 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7298 | |
7299 | stmt_list = NULL; | |
7300 | low_pc = NULL; | |
7301 | high_pc = NULL; | |
7302 | ranges = NULL; | |
7303 | comp_dir = NULL; | |
7304 | ||
7305 | if (stub_comp_unit_die != NULL) | |
7306 | { | |
7307 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7308 | DWO file. */ | |
7309 | if (! this_cu->is_debug_types) | |
7310 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7311 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7312 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7313 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7314 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7315 | ||
18a8505e | 7316 | cu->addr_base = lookup_addr_base (stub_comp_unit_die); |
b0c7bfa9 | 7317 | |
18a8505e AT |
7318 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
7319 | here (if needed). We need the value before we can process | |
7320 | DW_AT_ranges. */ | |
7321 | cu->ranges_base = lookup_ranges_base (stub_comp_unit_die); | |
b0c7bfa9 | 7322 | } |
a2ce51a0 DE |
7323 | else if (stub_comp_dir != NULL) |
7324 | { | |
7325 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7326 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7327 | comp_dir->name = DW_AT_comp_dir; |
7328 | comp_dir->form = DW_FORM_string; | |
7329 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7330 | DW_STRING (comp_dir) = stub_comp_dir; | |
7331 | } | |
b0c7bfa9 DE |
7332 | |
7333 | /* Set up for reading the DWO CU/TU. */ | |
7334 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7335 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7336 | dwarf2_read_section (objfile, section); |
a32a8923 | 7337 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7338 | begin_info_ptr = info_ptr = (section->buffer |
7339 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7340 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7341 | |
7342 | if (this_cu->is_debug_types) | |
7343 | { | |
b0c7bfa9 DE |
7344 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7345 | ||
ed2dc618 SM |
7346 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7347 | &cu->header, section, | |
b0c7bfa9 | 7348 | dwo_abbrev_section, |
43988095 | 7349 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7350 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7351 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7352 | { |
7353 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7354 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7355 | hex_string (sig_type->signature), |
43988095 | 7356 | hex_string (cu->header.signature), |
9d8780f0 | 7357 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7358 | bfd_get_filename (abfd)); |
7359 | } | |
9c541725 | 7360 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7361 | /* For DWOs coming from DWP files, we don't know the CU length |
7362 | nor the type's offset in the TU until now. */ | |
7363 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7364 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7365 | |
7366 | /* Establish the type offset that can be used to lookup the type. | |
7367 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7368 | sig_type->type_offset_in_section |
7369 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7370 | } |
7371 | else | |
7372 | { | |
ed2dc618 SM |
7373 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7374 | &cu->header, section, | |
b0c7bfa9 | 7375 | dwo_abbrev_section, |
43988095 | 7376 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7377 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7378 | /* For DWOs coming from DWP files, we don't know the CU length |
7379 | until now. */ | |
7380 | dwo_unit->length = get_cu_length (&cu->header); | |
7381 | } | |
7382 | ||
685af9cd TT |
7383 | *result_dwo_abbrev_table |
7384 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7385 | cu->header.abbrev_sect_off); | |
7386 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7387 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7388 | |
7389 | /* Read in the die, but leave space to copy over the attributes | |
7390 | from the stub. This has the benefit of simplifying the rest of | |
7391 | the code - all the work to maintain the illusion of a single | |
7392 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7393 | num_extra_attrs = ((stmt_list != NULL) | |
7394 | + (low_pc != NULL) | |
7395 | + (high_pc != NULL) | |
7396 | + (ranges != NULL) | |
7397 | + (comp_dir != NULL)); | |
7398 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7399 | result_has_children, num_extra_attrs); | |
7400 | ||
7401 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7402 | comp_unit_die = *result_comp_unit_die; | |
7403 | i = comp_unit_die->num_attrs; | |
7404 | if (stmt_list != NULL) | |
7405 | comp_unit_die->attrs[i++] = *stmt_list; | |
7406 | if (low_pc != NULL) | |
7407 | comp_unit_die->attrs[i++] = *low_pc; | |
7408 | if (high_pc != NULL) | |
7409 | comp_unit_die->attrs[i++] = *high_pc; | |
7410 | if (ranges != NULL) | |
7411 | comp_unit_die->attrs[i++] = *ranges; | |
7412 | if (comp_dir != NULL) | |
7413 | comp_unit_die->attrs[i++] = *comp_dir; | |
7414 | comp_unit_die->num_attrs += num_extra_attrs; | |
7415 | ||
b4f54984 | 7416 | if (dwarf_die_debug) |
bf6af496 DE |
7417 | { |
7418 | fprintf_unfiltered (gdb_stdlog, | |
7419 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7420 | get_section_name (section), |
bf6af496 DE |
7421 | (unsigned) (begin_info_ptr - section->buffer), |
7422 | bfd_get_filename (abfd)); | |
b4f54984 | 7423 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7424 | } |
7425 | ||
a2ce51a0 DE |
7426 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7427 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7428 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7429 | to get it via circuitous means. Blech. */ | |
7430 | if (comp_dir != NULL) | |
7431 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7432 | ||
b0c7bfa9 DE |
7433 | /* Skip dummy compilation units. */ |
7434 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7435 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7436 | return 0; | |
7437 | ||
7438 | *result_info_ptr = info_ptr; | |
7439 | return 1; | |
7440 | } | |
7441 | ||
a084a2a6 AT |
7442 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7443 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7444 | signature is part of the header. */ | |
7445 | static gdb::optional<ULONGEST> | |
7446 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7447 | { | |
7448 | if (cu->header.version >= 5) | |
7449 | return cu->header.signature; | |
7450 | struct attribute *attr; | |
7451 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7452 | if (attr == nullptr) | |
7453 | return gdb::optional<ULONGEST> (); | |
7454 | return DW_UNSND (attr); | |
7455 | } | |
7456 | ||
c0ab21c2 | 7457 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7458 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7459 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7460 | |
7461 | static struct dwo_unit * | |
7462 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
7463 | struct die_info *comp_unit_die, |
7464 | const char *dwo_name) | |
b0c7bfa9 DE |
7465 | { |
7466 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7467 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7468 | const char *comp_dir; |
b0c7bfa9 | 7469 | |
a2ce51a0 DE |
7470 | gdb_assert (cu != NULL); |
7471 | ||
b0c7bfa9 | 7472 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7473 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7474 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
7475 | |
7476 | if (this_cu->is_debug_types) | |
7477 | { | |
7478 | struct signatured_type *sig_type; | |
7479 | ||
7480 | /* Since this_cu is the first member of struct signatured_type, | |
7481 | we can go from a pointer to one to a pointer to the other. */ | |
7482 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
7483 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
7484 | } | |
7485 | else | |
7486 | { | |
a084a2a6 AT |
7487 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
7488 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
7489 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7490 | " [in module %s]"), | |
e3b94546 | 7491 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 7492 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 7493 | *signature); |
b0c7bfa9 DE |
7494 | } |
7495 | ||
b0c7bfa9 DE |
7496 | return dwo_unit; |
7497 | } | |
7498 | ||
c0ab21c2 | 7499 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7500 | See it for a description of the parameters. |
fcd3b13d | 7501 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7502 | |
c0ab21c2 TT |
7503 | void |
7504 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
7505 | int use_existing_cu, int keep) | |
a2ce51a0 | 7506 | { |
a2ce51a0 | 7507 | struct signatured_type *sig_type; |
a2ce51a0 | 7508 | struct die_reader_specs reader; |
a2ce51a0 DE |
7509 | |
7510 | /* Verify we can do the following downcast, and that we have the | |
7511 | data we need. */ | |
7512 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7513 | sig_type = (struct signatured_type *) this_cu; | |
7514 | gdb_assert (sig_type->dwo_unit != NULL); | |
7515 | ||
6aa5f3a6 DE |
7516 | if (use_existing_cu && this_cu->cu != NULL) |
7517 | { | |
7518 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7519 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7520 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7521 | } |
7522 | else | |
7523 | { | |
7524 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7525 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 7526 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7527 | } |
7528 | ||
7529 | /* A future optimization, if needed, would be to use an existing | |
7530 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7531 | could share abbrev tables. */ | |
a2ce51a0 DE |
7532 | |
7533 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
7534 | NULL /* stub_comp_unit_die */, |
7535 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7536 | &reader, &info_ptr, | |
685af9cd | 7537 | &comp_unit_die, &has_children, |
c0ab21c2 | 7538 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7539 | { |
7540 | /* Dummy die. */ | |
c0ab21c2 | 7541 | dummy_p = true; |
a2ce51a0 | 7542 | } |
a2ce51a0 DE |
7543 | } |
7544 | ||
fd820528 | 7545 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7546 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7547 | |
f4dc4d17 DE |
7548 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7549 | Otherwise the table specified in the comp unit header is read in and used. | |
7550 | This is an optimization for when we already have the abbrev table. | |
7551 | ||
dee91e82 DE |
7552 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7553 | Otherwise, a new CU is allocated with xmalloc. | |
7554 | ||
7555 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
c0ab21c2 TT |
7556 | read_in_chain. Otherwise the dwarf2_cu data is freed at the |
7557 | end. */ | |
aaa75496 | 7558 | |
c0ab21c2 TT |
7559 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7560 | struct abbrev_table *abbrev_table, | |
7561 | int use_existing_cu, int keep, | |
7562 | bool skip_partial) | |
7563 | : die_reader_specs {}, | |
7564 | m_this_cu (this_cu), | |
7565 | m_keep (keep) | |
c906108c | 7566 | { |
ed2dc618 | 7567 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7568 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7569 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7570 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7571 | struct dwarf2_cu *cu; |
c0ab21c2 | 7572 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7573 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7574 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7575 | /* Non-zero if CU currently points to a DWO file and we need to |
7576 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7577 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7578 | int rereading_dwo_cu = 0; |
c906108c | 7579 | |
b4f54984 | 7580 | if (dwarf_die_debug) |
9d8780f0 | 7581 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7582 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7583 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7584 | |
dee91e82 DE |
7585 | if (use_existing_cu) |
7586 | gdb_assert (keep); | |
23745b47 | 7587 | |
a2ce51a0 DE |
7588 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7589 | file (instead of going through the stub), short-circuit all of this. */ | |
7590 | if (this_cu->reading_dwo_directly) | |
7591 | { | |
7592 | /* Narrow down the scope of possibilities to have to understand. */ | |
7593 | gdb_assert (this_cu->is_debug_types); | |
7594 | gdb_assert (abbrev_table == NULL); | |
c0ab21c2 | 7595 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep); |
a2ce51a0 DE |
7596 | return; |
7597 | } | |
7598 | ||
dee91e82 DE |
7599 | /* This is cheap if the section is already read in. */ |
7600 | dwarf2_read_section (objfile, section); | |
7601 | ||
9c541725 | 7602 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7603 | |
7604 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
7605 | |
7606 | if (use_existing_cu && this_cu->cu != NULL) | |
7607 | { | |
7608 | cu = this_cu->cu; | |
42e7ad6c DE |
7609 | /* If this CU is from a DWO file we need to start over, we need to |
7610 | refetch the attributes from the skeleton CU. | |
7611 | This could be optimized by retrieving those attributes from when we | |
7612 | were here the first time: the previous comp_unit_die was stored in | |
7613 | comp_unit_obstack. But there's no data yet that we need this | |
7614 | optimization. */ | |
7615 | if (cu->dwo_unit != NULL) | |
7616 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7617 | } |
7618 | else | |
7619 | { | |
7620 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7621 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
7622 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
7623 | cu = m_new_cu.get (); | |
42e7ad6c | 7624 | } |
dee91e82 | 7625 | |
b0c7bfa9 | 7626 | /* Get the header. */ |
9c541725 | 7627 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7628 | { |
7629 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7630 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7631 | } |
7632 | else | |
7633 | { | |
3019eac3 | 7634 | if (this_cu->is_debug_types) |
dee91e82 | 7635 | { |
ed2dc618 SM |
7636 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7637 | &cu->header, section, | |
4bdcc0c1 | 7638 | abbrev_section, info_ptr, |
43988095 | 7639 | rcuh_kind::TYPE); |
dee91e82 | 7640 | |
42e7ad6c DE |
7641 | /* Since per_cu is the first member of struct signatured_type, |
7642 | we can go from a pointer to one to a pointer to the other. */ | |
7643 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7644 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7645 | gdb_assert (sig_type->type_offset_in_tu |
7646 | == cu->header.type_cu_offset_in_tu); | |
7647 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7648 | |
42e7ad6c DE |
7649 | /* LENGTH has not been set yet for type units if we're |
7650 | using .gdb_index. */ | |
1ce1cefd | 7651 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7652 | |
7653 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7654 | sig_type->type_offset_in_section = |
7655 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7656 | |
7657 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7658 | } |
7659 | else | |
7660 | { | |
ed2dc618 SM |
7661 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7662 | &cu->header, section, | |
4bdcc0c1 | 7663 | abbrev_section, |
43988095 JK |
7664 | info_ptr, |
7665 | rcuh_kind::COMPILE); | |
dee91e82 | 7666 | |
9c541725 | 7667 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7668 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7669 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7670 | } |
7671 | } | |
10b3939b | 7672 | |
6caca83c | 7673 | /* Skip dummy compilation units. */ |
dee91e82 | 7674 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7675 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7676 | { |
7677 | dummy_p = true; | |
7678 | return; | |
7679 | } | |
6caca83c | 7680 | |
433df2d4 DE |
7681 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7682 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7683 | done. */ |
f4dc4d17 | 7684 | if (abbrev_table != NULL) |
685af9cd TT |
7685 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7686 | else | |
f4dc4d17 | 7687 | { |
c0ab21c2 | 7688 | m_abbrev_table_holder |
685af9cd TT |
7689 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, |
7690 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7691 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7692 | } |
af703f96 | 7693 | |
dee91e82 | 7694 | /* Read the top level CU/TU die. */ |
c0ab21c2 TT |
7695 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
7696 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
93311388 | 7697 | |
58f0c718 | 7698 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7699 | { |
7700 | dummy_p = true; | |
7701 | return; | |
7702 | } | |
58f0c718 | 7703 | |
b0c7bfa9 | 7704 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7705 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7706 | table from the DWO file and pass the ownership over to us. It will be | |
7707 | referenced from READER, so we must make sure to free it after we're done | |
7708 | with READER. | |
7709 | ||
b0c7bfa9 DE |
7710 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7711 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7712 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7713 | if (dwo_name != nullptr) |
3019eac3 | 7714 | { |
3019eac3 | 7715 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7716 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7717 | |
7718 | if (has_children) | |
6a506a2d | 7719 | { |
b98664d3 | 7720 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7721 | " has children (offset %s) [in module %s]"), |
7722 | sect_offset_str (this_cu->sect_off), | |
7723 | bfd_get_filename (abfd)); | |
6a506a2d | 7724 | } |
c0ab21c2 | 7725 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 7726 | if (dwo_unit != NULL) |
3019eac3 | 7727 | { |
6a506a2d | 7728 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7729 | comp_unit_die, NULL, |
c0ab21c2 | 7730 | this, &info_ptr, |
685af9cd | 7731 | &dwo_comp_unit_die, &has_children, |
c0ab21c2 | 7732 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7733 | { |
7734 | /* Dummy die. */ | |
c0ab21c2 | 7735 | dummy_p = true; |
6a506a2d DE |
7736 | return; |
7737 | } | |
7738 | comp_unit_die = dwo_comp_unit_die; | |
7739 | } | |
7740 | else | |
7741 | { | |
7742 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7743 | the stub. A complaint has already been logged. There's | |
7744 | not much more we can do except pass on the stub DIE to | |
7745 | die_reader_func. We don't want to throw an error on bad | |
7746 | debug info. */ | |
3019eac3 DE |
7747 | } |
7748 | } | |
c0ab21c2 | 7749 | } |
3019eac3 | 7750 | |
c0ab21c2 TT |
7751 | cutu_reader::~cutu_reader () |
7752 | { | |
b0c7bfa9 | 7753 | /* Done, clean up. */ |
c0ab21c2 | 7754 | if (m_new_cu != NULL && m_keep && !dummy_p) |
348e048f | 7755 | { |
c0ab21c2 TT |
7756 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7757 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7758 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
7759 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7760 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 7761 | /* The chain owns it now. */ |
c0ab21c2 | 7762 | m_new_cu.release (); |
348e048f | 7763 | } |
dee91e82 DE |
7764 | } |
7765 | ||
18a8505e AT |
7766 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7767 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7768 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7769 | |
7770 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7771 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7772 | |
7773 | We fill in THIS_CU->length. | |
7774 | ||
dee91e82 | 7775 | THIS_CU->cu is always freed when done. |
3019eac3 | 7776 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7777 | to care whether it refers to the "main" CU or the DWO CU. |
7778 | ||
7779 | When parent_cu is passed, it is used to provide a default value for | |
7780 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7781 | |
c0ab21c2 TT |
7782 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7783 | struct dwarf2_cu *parent_cu, | |
7784 | struct dwo_file *dwo_file) | |
7785 | : die_reader_specs {}, | |
7786 | m_this_cu (this_cu) | |
dee91e82 | 7787 | { |
ed2dc618 | 7788 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7789 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7790 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7791 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7792 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7793 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
7794 | int has_children; |
7795 | ||
b4f54984 | 7796 | if (dwarf_die_debug) |
9d8780f0 | 7797 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7798 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7799 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7800 | |
dee91e82 DE |
7801 | gdb_assert (this_cu->cu == NULL); |
7802 | ||
33e80786 DE |
7803 | abbrev_section = (dwo_file != NULL |
7804 | ? &dwo_file->sections.abbrev | |
7805 | : get_abbrev_section_for_cu (this_cu)); | |
7806 | ||
dee91e82 DE |
7807 | /* This is cheap if the section is already read in. */ |
7808 | dwarf2_read_section (objfile, section); | |
7809 | ||
c0ab21c2 | 7810 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7811 | |
9c541725 | 7812 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7813 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7814 | &m_new_cu->header, section, |
4bdcc0c1 | 7815 | abbrev_section, info_ptr, |
43988095 JK |
7816 | (this_cu->is_debug_types |
7817 | ? rcuh_kind::TYPE | |
7818 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7819 | |
18a8505e AT |
7820 | if (parent_cu != nullptr) |
7821 | { | |
c0ab21c2 TT |
7822 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7823 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7824 | } |
c0ab21c2 | 7825 | this_cu->length = get_cu_length (&m_new_cu->header); |
dee91e82 DE |
7826 | |
7827 | /* Skip dummy compilation units. */ | |
7828 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7829 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7830 | { |
7831 | dummy_p = true; | |
7832 | return; | |
7833 | } | |
72bf9492 | 7834 | |
c0ab21c2 | 7835 | m_abbrev_table_holder |
685af9cd | 7836 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, |
c0ab21c2 | 7837 | m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7838 | |
c0ab21c2 TT |
7839 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7840 | m_abbrev_table_holder.get ()); | |
7841 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
dee91e82 DE |
7842 | } |
7843 | ||
0018ea6f DE |
7844 | \f |
7845 | /* Type Unit Groups. | |
dee91e82 | 7846 | |
0018ea6f DE |
7847 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7848 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7849 | so that all types coming from the same compilation (.o file) are grouped | |
7850 | together. A future step could be to put the types in the same symtab as | |
7851 | the CU the types ultimately came from. */ | |
ff013f42 | 7852 | |
f4dc4d17 DE |
7853 | static hashval_t |
7854 | hash_type_unit_group (const void *item) | |
7855 | { | |
9a3c8263 SM |
7856 | const struct type_unit_group *tu_group |
7857 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7858 | |
094b34ac | 7859 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7860 | } |
348e048f DE |
7861 | |
7862 | static int | |
f4dc4d17 | 7863 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7864 | { |
9a3c8263 SM |
7865 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7866 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7867 | |
094b34ac | 7868 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7869 | } |
348e048f | 7870 | |
f4dc4d17 DE |
7871 | /* Allocate a hash table for type unit groups. */ |
7872 | ||
7873 | static htab_t | |
ed2dc618 | 7874 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7875 | { |
7876 | return htab_create_alloc_ex (3, | |
7877 | hash_type_unit_group, | |
7878 | eq_type_unit_group, | |
7879 | NULL, | |
ed2dc618 | 7880 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7881 | hashtab_obstack_allocate, |
7882 | dummy_obstack_deallocate); | |
7883 | } | |
dee91e82 | 7884 | |
f4dc4d17 DE |
7885 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7886 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7887 | of any one psymtab grow too big. */ | |
7888 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7889 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7890 | |
094b34ac | 7891 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7892 | Create the type_unit_group object used to hold one or more TUs. */ |
7893 | ||
7894 | static struct type_unit_group * | |
094b34ac | 7895 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7896 | { |
518817b3 SM |
7897 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7898 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7899 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7900 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7901 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7902 | |
7903 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7904 | struct type_unit_group); | |
094b34ac | 7905 | per_cu = &tu_group->per_cu; |
518817b3 | 7906 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7907 | |
094b34ac DE |
7908 | if (dwarf2_per_objfile->using_index) |
7909 | { | |
7910 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7911 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7912 | } |
7913 | else | |
7914 | { | |
9c541725 | 7915 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7916 | dwarf2_psymtab *pst; |
528e1572 | 7917 | std::string name; |
094b34ac DE |
7918 | |
7919 | /* Give the symtab a useful name for debug purposes. */ | |
7920 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7921 | name = string_printf ("<type_units_%d>", |
7922 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7923 | else |
528e1572 | 7924 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7925 | |
528e1572 | 7926 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7927 | pst->anonymous = true; |
094b34ac | 7928 | } |
f4dc4d17 | 7929 | |
094b34ac | 7930 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7931 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7932 | |
7933 | return tu_group; | |
7934 | } | |
7935 | ||
094b34ac DE |
7936 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7937 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7938 | |
7939 | static struct type_unit_group * | |
ff39bb5e | 7940 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7941 | { |
518817b3 SM |
7942 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7943 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7944 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7945 | struct type_unit_group *tu_group; | |
7946 | void **slot; | |
7947 | unsigned int line_offset; | |
7948 | struct type_unit_group type_unit_group_for_lookup; | |
7949 | ||
7950 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7951 | { | |
7952 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7953 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7954 | } |
7955 | ||
7956 | /* Do we need to create a new group, or can we use an existing one? */ | |
7957 | ||
7958 | if (stmt_list) | |
7959 | { | |
7960 | line_offset = DW_UNSND (stmt_list); | |
7961 | ++tu_stats->nr_symtab_sharers; | |
7962 | } | |
7963 | else | |
7964 | { | |
7965 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7966 | We can do various things here like create one group per TU or | |
7967 | spread them over multiple groups to split up the expansion work. | |
7968 | To avoid worst case scenarios (too many groups or too large groups) | |
7969 | we, umm, group them in bunches. */ | |
7970 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7971 | | (tu_stats->nr_stmt_less_type_units | |
7972 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7973 | ++tu_stats->nr_stmt_less_type_units; | |
7974 | } | |
7975 | ||
094b34ac | 7976 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7977 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7978 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7979 | &type_unit_group_for_lookup, INSERT); | |
7980 | if (*slot != NULL) | |
7981 | { | |
9a3c8263 | 7982 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7983 | gdb_assert (tu_group != NULL); |
7984 | } | |
7985 | else | |
7986 | { | |
9c541725 | 7987 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7988 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7989 | *slot = tu_group; |
7990 | ++tu_stats->nr_symtabs; | |
7991 | } | |
7992 | ||
7993 | return tu_group; | |
7994 | } | |
0018ea6f DE |
7995 | \f |
7996 | /* Partial symbol tables. */ | |
7997 | ||
7998 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7999 | ||
8000 | The caller must fill in the following details: | |
8001 | dirname, textlow, texthigh. */ | |
8002 | ||
891813be | 8003 | static dwarf2_psymtab * |
0018ea6f DE |
8004 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
8005 | { | |
e3b94546 | 8006 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 8007 | dwarf2_psymtab *pst; |
0018ea6f | 8008 | |
891813be | 8009 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 8010 | |
6d94535f | 8011 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
8012 | |
8013 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 8014 | pst->per_cu_data = per_cu; |
0018ea6f DE |
8015 | per_cu->v.psymtab = pst; |
8016 | ||
8017 | return pst; | |
8018 | } | |
8019 | ||
c0ab21c2 | 8020 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
8021 | |
8022 | static void | |
8023 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8024 | const gdb_byte *info_ptr, |
0018ea6f DE |
8025 | struct die_info *comp_unit_die, |
8026 | int has_children, | |
c0ab21c2 TT |
8027 | int want_partial_unit, |
8028 | enum language pretend_language) | |
0018ea6f DE |
8029 | { |
8030 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8031 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8032 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8033 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8034 | CORE_ADDR baseaddr; |
8035 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 8036 | dwarf2_psymtab *pst; |
3a2b436a | 8037 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8038 | const char *filename; |
0018ea6f | 8039 | |
c0ab21c2 | 8040 | if (comp_unit_die->tag == DW_TAG_partial_unit && !want_partial_unit) |
0018ea6f DE |
8041 | return; |
8042 | ||
8043 | gdb_assert (! per_cu->is_debug_types); | |
8044 | ||
c0ab21c2 | 8045 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 8046 | |
0018ea6f | 8047 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
8048 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8049 | if (filename == NULL) | |
0018ea6f | 8050 | filename = ""; |
0018ea6f DE |
8051 | |
8052 | pst = create_partial_symtab (per_cu, filename); | |
8053 | ||
8054 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8055 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 8056 | |
b3b3bada | 8057 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
8058 | |
8059 | dwarf2_find_base_address (comp_unit_die, cu); | |
8060 | ||
8061 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8062 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8063 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8064 | &best_highpc, cu, pst); | |
8065 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8066 | { |
8067 | CORE_ADDR low | |
8068 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8069 | - baseaddr); | |
8070 | CORE_ADDR high | |
8071 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8072 | - baseaddr - 1); | |
8073 | /* Store the contiguous range if it is not empty; it can be | |
8074 | empty for CUs with no code. */ | |
d320c2b5 TT |
8075 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
8076 | low, high, pst); | |
79748972 | 8077 | } |
0018ea6f DE |
8078 | |
8079 | /* Check if comp unit has_children. | |
8080 | If so, read the rest of the partial symbols from this comp unit. | |
8081 | If not, there's no more debug_info for this comp unit. */ | |
8082 | if (has_children) | |
8083 | { | |
8084 | struct partial_die_info *first_die; | |
8085 | CORE_ADDR lowpc, highpc; | |
8086 | ||
8087 | lowpc = ((CORE_ADDR) -1); | |
8088 | highpc = ((CORE_ADDR) 0); | |
8089 | ||
8090 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8091 | ||
8092 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8093 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8094 | |
8095 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8096 | complaints from `maint check'. */ | |
8097 | if (lowpc == ((CORE_ADDR) -1)) | |
8098 | lowpc = highpc; | |
8099 | ||
8100 | /* If the compilation unit didn't have an explicit address range, | |
8101 | then use the information extracted from its child dies. */ | |
e385593e | 8102 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8103 | { |
8104 | best_lowpc = lowpc; | |
8105 | best_highpc = highpc; | |
8106 | } | |
8107 | } | |
4ae976d1 | 8108 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8109 | best_lowpc + baseaddr) |
8110 | - baseaddr); | |
4ae976d1 | 8111 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8112 | best_highpc + baseaddr) |
8113 | - baseaddr); | |
0018ea6f | 8114 | |
8763cede | 8115 | end_psymtab_common (objfile, pst); |
0018ea6f | 8116 | |
ae640021 | 8117 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
8118 | { |
8119 | int i; | |
ae640021 | 8120 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
8121 | |
8122 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8123 | post-pass. */ | |
8124 | pst->number_of_dependencies = len; | |
a9342b62 TT |
8125 | pst->dependencies |
8126 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
8127 | for (i = 0; i < len; ++i) |
8128 | { | |
8129 | pst->dependencies[i] | |
8130 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
8131 | } | |
0018ea6f | 8132 | |
ae640021 | 8133 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
8134 | } |
8135 | ||
8136 | /* Get the list of files included in the current compilation unit, | |
8137 | and build a psymtab for each of them. */ | |
8138 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8139 | ||
b4f54984 | 8140 | if (dwarf_read_debug) |
b926417a TT |
8141 | fprintf_unfiltered (gdb_stdlog, |
8142 | "Psymtab for %s unit @%s: %s - %s" | |
8143 | ", %d global, %d static syms\n", | |
8144 | per_cu->is_debug_types ? "type" : "comp", | |
8145 | sect_offset_str (per_cu->sect_off), | |
8146 | paddress (gdbarch, pst->text_low (objfile)), | |
8147 | paddress (gdbarch, pst->text_high (objfile)), | |
8148 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8149 | } |
8150 | ||
8151 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8152 | Process compilation unit THIS_CU for a psymtab. */ | |
8153 | ||
8154 | static void | |
8155 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8156 | int want_partial_unit, |
8157 | enum language pretend_language) | |
0018ea6f DE |
8158 | { |
8159 | /* If this compilation unit was already read in, free the | |
8160 | cached copy in order to read it in again. This is | |
8161 | necessary because we skipped some symbols when we first | |
8162 | read in the compilation unit (see load_partial_dies). | |
8163 | This problem could be avoided, but the benefit is unclear. */ | |
8164 | if (this_cu->cu != NULL) | |
8165 | free_one_cached_comp_unit (this_cu); | |
8166 | ||
c0ab21c2 TT |
8167 | cutu_reader reader (this_cu, NULL, 0, 0, false); |
8168 | ||
8169 | if (reader.dummy_p) | |
f1902523 | 8170 | { |
c0ab21c2 | 8171 | /* Nothing. */ |
f1902523 | 8172 | } |
c0ab21c2 TT |
8173 | else if (this_cu->is_debug_types) |
8174 | build_type_psymtabs_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
8175 | reader.has_children); | |
8176 | else | |
8177 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, | |
8178 | reader.comp_unit_die, | |
8179 | reader.has_children, | |
8180 | want_partial_unit, | |
8181 | pretend_language); | |
0018ea6f DE |
8182 | |
8183 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8184 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8185 | } |
f4dc4d17 DE |
8186 | |
8187 | /* Reader function for build_type_psymtabs. */ | |
8188 | ||
8189 | static void | |
8190 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8191 | const gdb_byte *info_ptr, |
f4dc4d17 | 8192 | struct die_info *type_unit_die, |
c0ab21c2 | 8193 | int has_children) |
f4dc4d17 | 8194 | { |
ed2dc618 | 8195 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8196 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8197 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8198 | struct dwarf2_cu *cu = reader->cu; | |
8199 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8200 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8201 | struct type_unit_group *tu_group; |
8202 | struct attribute *attr; | |
8203 | struct partial_die_info *first_die; | |
8204 | CORE_ADDR lowpc, highpc; | |
891813be | 8205 | dwarf2_psymtab *pst; |
f4dc4d17 | 8206 | |
0186c6a7 DE |
8207 | gdb_assert (per_cu->is_debug_types); |
8208 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8209 | |
8210 | if (! has_children) | |
8211 | return; | |
8212 | ||
8213 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8214 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8215 | |
df07e2c7 | 8216 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 8217 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 8218 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
8219 | |
8220 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 8221 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 8222 | pst->anonymous = true; |
f4dc4d17 DE |
8223 | |
8224 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8225 | ||
8226 | lowpc = (CORE_ADDR) -1; | |
8227 | highpc = (CORE_ADDR) 0; | |
8228 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8229 | ||
8763cede | 8230 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8231 | } |
8232 | ||
73051182 DE |
8233 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8234 | ||
8235 | struct tu_abbrev_offset | |
8236 | { | |
b2bdb8cf SM |
8237 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8238 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8239 | {} | |
8240 | ||
8241 | signatured_type *sig_type; | |
73051182 DE |
8242 | sect_offset abbrev_offset; |
8243 | }; | |
8244 | ||
484cf504 | 8245 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8246 | |
484cf504 TT |
8247 | static bool |
8248 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8249 | const struct tu_abbrev_offset &b) | |
73051182 | 8250 | { |
484cf504 | 8251 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8252 | } |
8253 | ||
8254 | /* Efficiently read all the type units. | |
8255 | This does the bulk of the work for build_type_psymtabs. | |
8256 | ||
8257 | The efficiency is because we sort TUs by the abbrev table they use and | |
8258 | only read each abbrev table once. In one program there are 200K TUs | |
8259 | sharing 8K abbrev tables. | |
8260 | ||
8261 | The main purpose of this function is to support building the | |
8262 | dwarf2_per_objfile->type_unit_groups table. | |
8263 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8264 | can collapse the search space by grouping them by stmt_list. | |
8265 | The savings can be significant, in the same program from above the 200K TUs | |
8266 | share 8K stmt_list tables. | |
8267 | ||
8268 | FUNC is expected to call get_type_unit_group, which will create the | |
8269 | struct type_unit_group if necessary and add it to | |
8270 | dwarf2_per_objfile->type_unit_groups. */ | |
8271 | ||
8272 | static void | |
ed2dc618 | 8273 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8274 | { |
73051182 | 8275 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8276 | abbrev_table_up abbrev_table; |
73051182 | 8277 | sect_offset abbrev_offset; |
73051182 DE |
8278 | |
8279 | /* It's up to the caller to not call us multiple times. */ | |
8280 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8281 | ||
b2bdb8cf | 8282 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8283 | return; |
8284 | ||
8285 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8286 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8287 | read each abbrev table in. | |
8288 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8289 | This is simpler and efficient enough for now. | |
8290 | ||
8291 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8292 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8293 | stmt_list value too so in practice this should work well. | |
8294 | ||
8295 | The basic algorithm here is: | |
8296 | ||
8297 | sort TUs by abbrev table | |
8298 | for each TU with same abbrev table: | |
8299 | read abbrev table if first user | |
8300 | read TU top level DIE | |
8301 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8302 | call FUNC */ | |
8303 | ||
b4f54984 | 8304 | if (dwarf_read_debug) |
73051182 DE |
8305 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8306 | ||
8307 | /* Sort in a separate table to maintain the order of all_type_units | |
8308 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8309 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8310 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8311 | ||
8312 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8313 | sorted_by_abbrev.emplace_back | |
8314 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8315 | sig_type->per_cu.section, | |
8316 | sig_type->per_cu.sect_off)); | |
73051182 | 8317 | |
484cf504 TT |
8318 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8319 | sort_tu_by_abbrev_offset); | |
73051182 | 8320 | |
9c541725 | 8321 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8322 | |
b2bdb8cf | 8323 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8324 | { |
73051182 DE |
8325 | /* Switch to the next abbrev table if necessary. */ |
8326 | if (abbrev_table == NULL | |
b2bdb8cf | 8327 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8328 | { |
b2bdb8cf | 8329 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8330 | abbrev_table = |
ed2dc618 SM |
8331 | abbrev_table_read_table (dwarf2_per_objfile, |
8332 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8333 | abbrev_offset); |
8334 | ++tu_stats->nr_uniq_abbrev_tables; | |
8335 | } | |
8336 | ||
c0ab21c2 TT |
8337 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
8338 | 0, 0, false); | |
8339 | if (!reader.dummy_p) | |
8340 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8341 | reader.comp_unit_die, | |
8342 | reader.has_children); | |
73051182 | 8343 | } |
6aa5f3a6 | 8344 | } |
73051182 | 8345 | |
6aa5f3a6 DE |
8346 | /* Print collected type unit statistics. */ |
8347 | ||
8348 | static void | |
ed2dc618 | 8349 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8350 | { |
8351 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8352 | ||
8353 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8354 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8355 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8356 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8357 | tu_stats->nr_uniq_abbrev_tables); | |
8358 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8359 | tu_stats->nr_symtabs); | |
8360 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8361 | tu_stats->nr_symtab_sharers); | |
8362 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8363 | tu_stats->nr_stmt_less_type_units); | |
8364 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8365 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8366 | } |
8367 | ||
f4dc4d17 DE |
8368 | /* Traversal function for build_type_psymtabs. */ |
8369 | ||
8370 | static int | |
8371 | build_type_psymtab_dependencies (void **slot, void *info) | |
8372 | { | |
ed2dc618 SM |
8373 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8374 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8375 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8376 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8377 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8378 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8379 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8380 | int i; |
8381 | ||
8382 | gdb_assert (len > 0); | |
0186c6a7 | 8383 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8384 | |
8385 | pst->number_of_dependencies = len; | |
a9342b62 | 8386 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8387 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8388 | { |
df07e2c7 | 8389 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8390 | gdb_assert (iter->per_cu.is_debug_types); |
8391 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8392 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8393 | } |
8394 | ||
df07e2c7 AB |
8395 | delete tu_group->tus; |
8396 | tu_group->tus = nullptr; | |
348e048f DE |
8397 | |
8398 | return 1; | |
8399 | } | |
8400 | ||
8401 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8402 | Build partial symbol tables for the .debug_types comp-units. */ | |
8403 | ||
8404 | static void | |
ed2dc618 | 8405 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8406 | { |
ed2dc618 | 8407 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8408 | return; |
8409 | ||
ed2dc618 | 8410 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8411 | } |
f4dc4d17 | 8412 | |
6aa5f3a6 DE |
8413 | /* Traversal function for process_skeletonless_type_unit. |
8414 | Read a TU in a DWO file and build partial symbols for it. */ | |
8415 | ||
8416 | static int | |
8417 | process_skeletonless_type_unit (void **slot, void *info) | |
8418 | { | |
8419 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8420 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8421 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8422 | struct signatured_type find_entry, *entry; |
8423 | ||
8424 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8425 | ||
8426 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8427 | { | |
8428 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8429 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8430 | } |
8431 | ||
8432 | find_entry.signature = dwo_unit->signature; | |
8433 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8434 | INSERT); | |
8435 | /* If we've already seen this type there's nothing to do. What's happening | |
8436 | is we're doing our own version of comdat-folding here. */ | |
8437 | if (*slot != NULL) | |
8438 | return 1; | |
8439 | ||
8440 | /* This does the job that create_all_type_units would have done for | |
8441 | this TU. */ | |
ed2dc618 SM |
8442 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8443 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8444 | *slot = entry; |
8445 | ||
8446 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
c0ab21c2 TT |
8447 | cutu_reader reader (&entry->per_cu, NULL, 0, 0, false); |
8448 | if (!reader.dummy_p) | |
8449 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8450 | reader.comp_unit_die, reader.has_children); | |
6aa5f3a6 DE |
8451 | |
8452 | return 1; | |
8453 | } | |
8454 | ||
8455 | /* Traversal function for process_skeletonless_type_units. */ | |
8456 | ||
8457 | static int | |
8458 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8459 | { | |
8460 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8461 | ||
8462 | if (dwo_file->tus != NULL) | |
8463 | { | |
8464 | htab_traverse_noresize (dwo_file->tus, | |
8465 | process_skeletonless_type_unit, info); | |
8466 | } | |
8467 | ||
8468 | return 1; | |
8469 | } | |
8470 | ||
8471 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8472 | This is needed in case a TU was emitted without its skeleton. | |
8473 | Note: This can't be done until we know what all the DWO files are. */ | |
8474 | ||
8475 | static void | |
ed2dc618 | 8476 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8477 | { |
8478 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8479 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8480 | && dwarf2_per_objfile->dwo_files != NULL) |
8481 | { | |
51ac9db5 | 8482 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 8483 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 8484 | dwarf2_per_objfile); |
6aa5f3a6 | 8485 | } |
348e048f DE |
8486 | } |
8487 | ||
ed2dc618 | 8488 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8489 | |
8490 | static void | |
ed2dc618 | 8491 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8492 | { |
b76e467d | 8493 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8494 | { |
891813be | 8495 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8496 | |
36586728 TT |
8497 | if (pst == NULL) |
8498 | continue; | |
8499 | ||
b76e467d | 8500 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8501 | { |
8502 | /* Set the 'user' field only if it is not already set. */ | |
8503 | if (pst->dependencies[j]->user == NULL) | |
8504 | pst->dependencies[j]->user = pst; | |
8505 | } | |
8506 | } | |
8507 | } | |
8508 | ||
93311388 DE |
8509 | /* Build the partial symbol table by doing a quick pass through the |
8510 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8511 | |
93311388 | 8512 | static void |
ed2dc618 | 8513 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8514 | { |
ed2dc618 | 8515 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8516 | |
b4f54984 | 8517 | if (dwarf_read_debug) |
45cfd468 DE |
8518 | { |
8519 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8520 | objfile_name (objfile)); |
45cfd468 DE |
8521 | } |
8522 | ||
98bfdba5 PA |
8523 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8524 | ||
be391dca | 8525 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8526 | |
93311388 DE |
8527 | /* Any cached compilation units will be linked by the per-objfile |
8528 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8529 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8530 | |
ed2dc618 | 8531 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8532 | |
ed2dc618 | 8533 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8534 | |
60606b2c TT |
8535 | /* Create a temporary address map on a temporary obstack. We later |
8536 | copy this to the final obstack. */ | |
8268c778 | 8537 | auto_obstack temp_obstack; |
791afaa2 TT |
8538 | |
8539 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8540 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8541 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8542 | |
b76e467d SM |
8543 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8544 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8545 | |
6aa5f3a6 | 8546 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8547 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8548 | |
8549 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8550 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8551 | { | |
8552 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8553 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8554 | } |
8555 | ||
b4f54984 | 8556 | if (dwarf_read_debug) |
ed2dc618 | 8557 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8558 | |
ed2dc618 | 8559 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8560 | |
d320c2b5 TT |
8561 | objfile->partial_symtabs->psymtabs_addrmap |
8562 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8563 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8564 | /* At this point we want to keep the address map. */ |
8565 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8566 | |
b4f54984 | 8567 | if (dwarf_read_debug) |
45cfd468 | 8568 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8569 | objfile_name (objfile)); |
ae038cb0 DJ |
8570 | } |
8571 | ||
dee91e82 DE |
8572 | /* Load the partial DIEs for a secondary CU into memory. |
8573 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8574 | |
dee91e82 DE |
8575 | static void |
8576 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8577 | { | |
c0ab21c2 TT |
8578 | cutu_reader reader (this_cu, NULL, 1, 1, false); |
8579 | ||
8580 | if (!reader.dummy_p) | |
8581 | { | |
8582 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8583 | language_minimal); | |
8584 | ||
8585 | /* Check if comp unit has_children. | |
8586 | If so, read the rest of the partial symbols from this comp unit. | |
8587 | If not, there's no more debug_info for this comp unit. */ | |
8588 | if (reader.has_children) | |
8589 | load_partial_dies (&reader, reader.info_ptr, 0); | |
8590 | } | |
ae038cb0 DJ |
8591 | } |
8592 | ||
ae038cb0 | 8593 | static void |
ed2dc618 | 8594 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8595 | struct dwarf2_section_info *section, |
f1902523 | 8596 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8597 | unsigned int is_dwz) |
ae038cb0 | 8598 | { |
d521ce57 | 8599 | const gdb_byte *info_ptr; |
ed2dc618 | 8600 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8601 | |
b4f54984 | 8602 | if (dwarf_read_debug) |
bf6af496 | 8603 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8604 | get_section_name (section), |
8605 | get_section_file_name (section)); | |
bf6af496 | 8606 | |
36586728 | 8607 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8608 | |
36586728 | 8609 | info_ptr = section->buffer; |
6e70227d | 8610 | |
36586728 | 8611 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8612 | { |
ae038cb0 | 8613 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8614 | |
9c541725 | 8615 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8616 | |
f1902523 | 8617 | comp_unit_head cu_header; |
ed2dc618 SM |
8618 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8619 | abbrev_section, info_ptr, | |
8620 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8621 | |
8622 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8623 | if (cu_header.unit_type != DW_UT_type) |
8624 | { | |
8625 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8626 | struct dwarf2_per_cu_data); | |
8627 | memset (this_cu, 0, sizeof (*this_cu)); | |
8628 | } | |
8629 | else | |
8630 | { | |
8631 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8632 | struct signatured_type); | |
8633 | memset (sig_type, 0, sizeof (*sig_type)); | |
8634 | sig_type->signature = cu_header.signature; | |
8635 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8636 | this_cu = &sig_type->per_cu; | |
8637 | } | |
8638 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8639 | this_cu->sect_off = sect_off; |
f1902523 | 8640 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8641 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8642 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8643 | this_cu->section = section; |
ae038cb0 | 8644 | |
b76e467d | 8645 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8646 | |
8647 | info_ptr = info_ptr + this_cu->length; | |
8648 | } | |
36586728 TT |
8649 | } |
8650 | ||
8651 | /* Create a list of all compilation units in OBJFILE. | |
8652 | This is only done for -readnow and building partial symtabs. */ | |
8653 | ||
8654 | static void | |
ed2dc618 | 8655 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8656 | { |
b76e467d | 8657 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8658 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8659 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8660 | |
b76e467d | 8661 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8662 | if (dwz != NULL) |
ed2dc618 | 8663 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8664 | 1); |
c906108c SS |
8665 | } |
8666 | ||
5734ee8b | 8667 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8668 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8669 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8670 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8671 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8672 | |
72bf9492 DJ |
8673 | static void |
8674 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8675 | CORE_ADDR *highpc, int set_addrmap, |
8676 | struct dwarf2_cu *cu) | |
c906108c | 8677 | { |
72bf9492 | 8678 | struct partial_die_info *pdi; |
c906108c | 8679 | |
91c24f0a DC |
8680 | /* Now, march along the PDI's, descending into ones which have |
8681 | interesting children but skipping the children of the other ones, | |
8682 | until we reach the end of the compilation unit. */ | |
c906108c | 8683 | |
72bf9492 | 8684 | pdi = first_die; |
91c24f0a | 8685 | |
72bf9492 DJ |
8686 | while (pdi != NULL) |
8687 | { | |
52356b79 | 8688 | pdi->fixup (cu); |
c906108c | 8689 | |
f55ee35c | 8690 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8691 | children, so we need to look at them. Ditto for anonymous |
8692 | enums. */ | |
933c6fe4 | 8693 | |
72bf9492 | 8694 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8695 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8696 | || pdi->tag == DW_TAG_imported_unit |
8697 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8698 | { |
72bf9492 | 8699 | switch (pdi->tag) |
c906108c SS |
8700 | { |
8701 | case DW_TAG_subprogram: | |
b1dc1806 | 8702 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8703 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8704 | break; |
72929c62 | 8705 | case DW_TAG_constant: |
c906108c SS |
8706 | case DW_TAG_variable: |
8707 | case DW_TAG_typedef: | |
91c24f0a | 8708 | case DW_TAG_union_type: |
72bf9492 | 8709 | if (!pdi->is_declaration) |
63d06c5c | 8710 | { |
72bf9492 | 8711 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8712 | } |
8713 | break; | |
c906108c | 8714 | case DW_TAG_class_type: |
680b30c7 | 8715 | case DW_TAG_interface_type: |
c906108c | 8716 | case DW_TAG_structure_type: |
72bf9492 | 8717 | if (!pdi->is_declaration) |
c906108c | 8718 | { |
72bf9492 | 8719 | add_partial_symbol (pdi, cu); |
c906108c | 8720 | } |
b7fee5a3 KS |
8721 | if ((cu->language == language_rust |
8722 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8723 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8724 | set_addrmap, cu); | |
c906108c | 8725 | break; |
91c24f0a | 8726 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8727 | if (!pdi->is_declaration) |
8728 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8729 | break; |
8730 | case DW_TAG_base_type: | |
a02abb62 | 8731 | case DW_TAG_subrange_type: |
c906108c | 8732 | /* File scope base type definitions are added to the partial |
c5aa993b | 8733 | symbol table. */ |
72bf9492 | 8734 | add_partial_symbol (pdi, cu); |
c906108c | 8735 | break; |
d9fa45fe | 8736 | case DW_TAG_namespace: |
cdc07690 | 8737 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8738 | break; |
5d7cb8df | 8739 | case DW_TAG_module: |
59c35742 AB |
8740 | if (!pdi->is_declaration) |
8741 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8742 | break; |
95554aad TT |
8743 | case DW_TAG_imported_unit: |
8744 | { | |
8745 | struct dwarf2_per_cu_data *per_cu; | |
8746 | ||
f4dc4d17 DE |
8747 | /* For now we don't handle imported units in type units. */ |
8748 | if (cu->per_cu->is_debug_types) | |
8749 | { | |
8750 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8751 | " supported in type units [in module %s]"), | |
518817b3 | 8752 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8753 | } |
8754 | ||
e3b94546 SM |
8755 | per_cu = dwarf2_find_containing_comp_unit |
8756 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8757 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8758 | |
8759 | /* Go read the partial unit, if needed. */ | |
8760 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8761 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8762 | |
ae640021 | 8763 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8764 | } |
8765 | break; | |
74921315 KS |
8766 | case DW_TAG_imported_declaration: |
8767 | add_partial_symbol (pdi, cu); | |
8768 | break; | |
c906108c SS |
8769 | default: |
8770 | break; | |
8771 | } | |
8772 | } | |
8773 | ||
72bf9492 DJ |
8774 | /* If the die has a sibling, skip to the sibling. */ |
8775 | ||
8776 | pdi = pdi->die_sibling; | |
8777 | } | |
8778 | } | |
8779 | ||
8780 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8781 | |
72bf9492 | 8782 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8783 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8784 | Enumerators are an exception; they use the scope of their parent |
8785 | enumeration type, i.e. the name of the enumeration type is not | |
8786 | prepended to the enumerator. | |
91c24f0a | 8787 | |
72bf9492 DJ |
8788 | There are two complexities. One is DW_AT_specification; in this |
8789 | case "parent" means the parent of the target of the specification, | |
8790 | instead of the direct parent of the DIE. The other is compilers | |
8791 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8792 | the fully qualified name of structure types from their members' | |
8793 | linkage names. This must be done using the DIE's children rather | |
8794 | than the children of any DW_AT_specification target. We only need | |
8795 | to do this for structures at the top level, i.e. if the target of | |
8796 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8797 | have a parent. */ | |
8798 | ||
8799 | /* Compute the scope prefix associated with PDI's parent, in | |
8800 | compilation unit CU. The result will be allocated on CU's | |
8801 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8802 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8803 | static const char * |
72bf9492 DJ |
8804 | partial_die_parent_scope (struct partial_die_info *pdi, |
8805 | struct dwarf2_cu *cu) | |
8806 | { | |
15d034d0 | 8807 | const char *grandparent_scope; |
72bf9492 | 8808 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8809 | |
72bf9492 DJ |
8810 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8811 | then this means the parent of the specification DIE. */ | |
8812 | ||
8813 | real_pdi = pdi; | |
72bf9492 | 8814 | while (real_pdi->has_specification) |
fb816e8b | 8815 | { |
122cf0f2 AB |
8816 | auto res = find_partial_die (real_pdi->spec_offset, |
8817 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8818 | real_pdi = res.pdi; |
8819 | cu = res.cu; | |
8820 | } | |
72bf9492 DJ |
8821 | |
8822 | parent = real_pdi->die_parent; | |
8823 | if (parent == NULL) | |
8824 | return NULL; | |
8825 | ||
8826 | if (parent->scope_set) | |
8827 | return parent->scope; | |
8828 | ||
52356b79 | 8829 | parent->fixup (cu); |
72bf9492 | 8830 | |
10b3939b | 8831 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8832 | |
acebe513 UW |
8833 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8834 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8835 | Work around this problem here. */ | |
8836 | if (cu->language == language_cplus | |
6e70227d | 8837 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8838 | && strcmp (parent->name, "::") == 0 |
8839 | && grandparent_scope == NULL) | |
8840 | { | |
8841 | parent->scope = NULL; | |
8842 | parent->scope_set = 1; | |
8843 | return NULL; | |
8844 | } | |
8845 | ||
0a4b0913 | 8846 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8847 | if (pdi->tag == DW_TAG_enumerator) |
8848 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8849 | parent->scope = grandparent_scope; | |
8850 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8851 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8852 | || parent->tag == DW_TAG_structure_type |
8853 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8854 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8855 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8856 | || parent->tag == DW_TAG_enumeration_type |
8857 | || (cu->language == language_fortran | |
8858 | && parent->tag == DW_TAG_subprogram | |
8859 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8860 | { |
8861 | if (grandparent_scope == NULL) | |
8862 | parent->scope = parent->name; | |
8863 | else | |
3e43a32a MS |
8864 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8865 | grandparent_scope, | |
f55ee35c | 8866 | parent->name, 0, cu); |
72bf9492 | 8867 | } |
72bf9492 DJ |
8868 | else |
8869 | { | |
8870 | /* FIXME drow/2004-04-01: What should we be doing with | |
8871 | function-local names? For partial symbols, we should probably be | |
8872 | ignoring them. */ | |
fa9c3fa0 TT |
8873 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8874 | dwarf_tag_name (parent->tag), | |
8875 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8876 | parent->scope = grandparent_scope; |
c906108c SS |
8877 | } |
8878 | ||
72bf9492 DJ |
8879 | parent->scope_set = 1; |
8880 | return parent->scope; | |
8881 | } | |
8882 | ||
8883 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8884 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8885 | |
43816ebc | 8886 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8887 | partial_die_full_name (struct partial_die_info *pdi, |
8888 | struct dwarf2_cu *cu) | |
8889 | { | |
15d034d0 | 8890 | const char *parent_scope; |
72bf9492 | 8891 | |
98bfdba5 PA |
8892 | /* If this is a template instantiation, we can not work out the |
8893 | template arguments from partial DIEs. So, unfortunately, we have | |
8894 | to go through the full DIEs. At least any work we do building | |
8895 | types here will be reused if full symbols are loaded later. */ | |
8896 | if (pdi->has_template_arguments) | |
8897 | { | |
52356b79 | 8898 | pdi->fixup (cu); |
98bfdba5 PA |
8899 | |
8900 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8901 | { | |
8902 | struct die_info *die; | |
8903 | struct attribute attr; | |
8904 | struct dwarf2_cu *ref_cu = cu; | |
8905 | ||
b64f50a1 | 8906 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8907 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8908 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8909 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8910 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8911 | ||
43816ebc | 8912 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8913 | } |
8914 | } | |
8915 | ||
72bf9492 DJ |
8916 | parent_scope = partial_die_parent_scope (pdi, cu); |
8917 | if (parent_scope == NULL) | |
8918 | return NULL; | |
8919 | else | |
43816ebc TT |
8920 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8921 | pdi->name, 0, cu)); | |
c906108c SS |
8922 | } |
8923 | ||
8924 | static void | |
72bf9492 | 8925 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8926 | { |
518817b3 SM |
8927 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8928 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8929 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8930 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8931 | CORE_ADDR addr = 0; |
15d034d0 | 8932 | const char *actual_name = NULL; |
e142c38c DJ |
8933 | CORE_ADDR baseaddr; |
8934 | ||
b3b3bada | 8935 | baseaddr = objfile->text_section_offset (); |
c906108c | 8936 | |
43816ebc TT |
8937 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8938 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8939 | if (built_actual_name != NULL) |
43816ebc | 8940 | actual_name = built_actual_name.get (); |
63d06c5c | 8941 | |
72bf9492 DJ |
8942 | if (actual_name == NULL) |
8943 | actual_name = pdi->name; | |
8944 | ||
c906108c SS |
8945 | switch (pdi->tag) |
8946 | { | |
b1dc1806 | 8947 | case DW_TAG_inlined_subroutine: |
c906108c | 8948 | case DW_TAG_subprogram: |
79748972 TT |
8949 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8950 | - baseaddr); | |
0a4b0913 AB |
8951 | if (pdi->is_external |
8952 | || cu->language == language_ada | |
8953 | || (cu->language == language_fortran | |
8954 | && pdi->die_parent != NULL | |
8955 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8956 | { | |
8957 | /* Normally, only "external" DIEs are part of the global scope. | |
8958 | But in Ada and Fortran, we want to be able to access nested | |
8959 | procedures globally. So all Ada and Fortran subprograms are | |
8960 | stored in the global scope. */ | |
31edb802 | 8961 | add_psymbol_to_list (actual_name, |
15d034d0 | 8962 | built_actual_name != NULL, |
f47fb265 | 8963 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8964 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8965 | psymbol_placement::GLOBAL, |
79748972 TT |
8966 | addr, |
8967 | cu->language, objfile); | |
c906108c SS |
8968 | } |
8969 | else | |
8970 | { | |
31edb802 | 8971 | add_psymbol_to_list (actual_name, |
15d034d0 | 8972 | built_actual_name != NULL, |
f47fb265 | 8973 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8974 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8975 | psymbol_placement::STATIC, |
1762568f | 8976 | addr, cu->language, objfile); |
c906108c | 8977 | } |
0c1b455e TT |
8978 | |
8979 | if (pdi->main_subprogram && actual_name != NULL) | |
8980 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8981 | break; |
72929c62 | 8982 | case DW_TAG_constant: |
31edb802 | 8983 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8984 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8985 | -1, (pdi->is_external | |
8986 | ? psymbol_placement::GLOBAL | |
8987 | : psymbol_placement::STATIC), | |
8988 | 0, cu->language, objfile); | |
72929c62 | 8989 | break; |
c906108c | 8990 | case DW_TAG_variable: |
95554aad TT |
8991 | if (pdi->d.locdesc) |
8992 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8993 | |
95554aad | 8994 | if (pdi->d.locdesc |
caac4577 JG |
8995 | && addr == 0 |
8996 | && !dwarf2_per_objfile->has_section_at_zero) | |
8997 | { | |
8998 | /* A global or static variable may also have been stripped | |
8999 | out by the linker if unused, in which case its address | |
9000 | will be nullified; do not add such variables into partial | |
9001 | symbol table then. */ | |
9002 | } | |
9003 | else if (pdi->is_external) | |
c906108c SS |
9004 | { |
9005 | /* Global Variable. | |
9006 | Don't enter into the minimal symbol tables as there is | |
9007 | a minimal symbol table entry from the ELF symbols already. | |
9008 | Enter into partial symbol table if it has a location | |
9009 | descriptor or a type. | |
9010 | If the location descriptor is missing, new_symbol will create | |
9011 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9012 | be determined from the minimal symbol table whenever the variable | |
9013 | is referenced. | |
9014 | The address for the partial symbol table entry is not | |
9015 | used by GDB, but it comes in handy for debugging partial symbol | |
9016 | table building. */ | |
9017 | ||
95554aad | 9018 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 9019 | add_psymbol_to_list (actual_name, |
15d034d0 | 9020 | built_actual_name != NULL, |
f47fb265 | 9021 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 9022 | SECT_OFF_TEXT (objfile), |
75aedd27 | 9023 | psymbol_placement::GLOBAL, |
79748972 | 9024 | addr, cu->language, objfile); |
c906108c SS |
9025 | } |
9026 | else | |
9027 | { | |
ff908ebf AW |
9028 | int has_loc = pdi->d.locdesc != NULL; |
9029 | ||
9030 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9031 | without location descriptors or constant values). */ | |
9032 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 9033 | return; |
ff908ebf | 9034 | |
31edb802 | 9035 | add_psymbol_to_list (actual_name, |
15d034d0 | 9036 | built_actual_name != NULL, |
f47fb265 | 9037 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 9038 | SECT_OFF_TEXT (objfile), |
75aedd27 | 9039 | psymbol_placement::STATIC, |
79748972 | 9040 | has_loc ? addr : 0, |
f47fb265 | 9041 | cu->language, objfile); |
c906108c SS |
9042 | } |
9043 | break; | |
9044 | case DW_TAG_typedef: | |
9045 | case DW_TAG_base_type: | |
a02abb62 | 9046 | case DW_TAG_subrange_type: |
31edb802 | 9047 | add_psymbol_to_list (actual_name, |
15d034d0 | 9048 | built_actual_name != NULL, |
79748972 | 9049 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9050 | psymbol_placement::STATIC, |
1762568f | 9051 | 0, cu->language, objfile); |
c906108c | 9052 | break; |
74921315 | 9053 | case DW_TAG_imported_declaration: |
72bf9492 | 9054 | case DW_TAG_namespace: |
31edb802 | 9055 | add_psymbol_to_list (actual_name, |
15d034d0 | 9056 | built_actual_name != NULL, |
79748972 | 9057 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9058 | psymbol_placement::GLOBAL, |
1762568f | 9059 | 0, cu->language, objfile); |
72bf9492 | 9060 | break; |
530e8392 | 9061 | case DW_TAG_module: |
a5fd13a9 BH |
9062 | /* With Fortran 77 there might be a "BLOCK DATA" module |
9063 | available without any name. If so, we skip the module as it | |
9064 | doesn't bring any value. */ | |
9065 | if (actual_name != nullptr) | |
31edb802 | 9066 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
9067 | built_actual_name != NULL, |
9068 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
9069 | psymbol_placement::GLOBAL, | |
9070 | 0, cu->language, objfile); | |
530e8392 | 9071 | break; |
c906108c | 9072 | case DW_TAG_class_type: |
680b30c7 | 9073 | case DW_TAG_interface_type: |
c906108c SS |
9074 | case DW_TAG_structure_type: |
9075 | case DW_TAG_union_type: | |
9076 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9077 | /* Skip external references. The DWARF standard says in the section |
9078 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9079 | structure, union or class type is represented by a structure, | |
9080 | union or class entry that does not have a byte size attribute | |
9081 | and that has a DW_AT_declaration attribute." */ | |
9082 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 9083 | return; |
fa4028e9 | 9084 | |
63d06c5c DC |
9085 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9086 | static vs. global. */ | |
31edb802 | 9087 | add_psymbol_to_list (actual_name, |
15d034d0 | 9088 | built_actual_name != NULL, |
79748972 | 9089 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9090 | cu->language == language_cplus |
75aedd27 TT |
9091 | ? psymbol_placement::GLOBAL |
9092 | : psymbol_placement::STATIC, | |
1762568f | 9093 | 0, cu->language, objfile); |
c906108c | 9094 | |
c906108c SS |
9095 | break; |
9096 | case DW_TAG_enumerator: | |
31edb802 | 9097 | add_psymbol_to_list (actual_name, |
15d034d0 | 9098 | built_actual_name != NULL, |
79748972 | 9099 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9100 | cu->language == language_cplus |
75aedd27 TT |
9101 | ? psymbol_placement::GLOBAL |
9102 | : psymbol_placement::STATIC, | |
1762568f | 9103 | 0, cu->language, objfile); |
c906108c SS |
9104 | break; |
9105 | default: | |
9106 | break; | |
9107 | } | |
9108 | } | |
9109 | ||
5c4e30ca DC |
9110 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9111 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9112 | the name of the enclosing namespace. */ | |
91c24f0a | 9113 | |
72bf9492 DJ |
9114 | static void |
9115 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9116 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9117 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9118 | { |
72bf9492 | 9119 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9120 | |
72bf9492 | 9121 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9122 | |
9123 | /* Now scan partial symbols in that namespace. */ | |
9124 | ||
91c24f0a | 9125 | if (pdi->has_children) |
cdc07690 | 9126 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9127 | } |
9128 | ||
5d7cb8df JK |
9129 | /* Read a partial die corresponding to a Fortran module. */ |
9130 | ||
9131 | static void | |
9132 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9133 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9134 | { |
530e8392 KB |
9135 | /* Add a symbol for the namespace. */ |
9136 | ||
9137 | add_partial_symbol (pdi, cu); | |
9138 | ||
f55ee35c | 9139 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9140 | |
9141 | if (pdi->has_children) | |
cdc07690 | 9142 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9143 | } |
9144 | ||
b1dc1806 XR |
9145 | /* Read a partial die corresponding to a subprogram or an inlined |
9146 | subprogram and create a partial symbol for that subprogram. | |
9147 | When the CU language allows it, this routine also defines a partial | |
9148 | symbol for each nested subprogram that this subprogram contains. | |
9149 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9150 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9151 | |
cdc07690 YQ |
9152 | PDI may also be a lexical block, in which case we simply search |
9153 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9154 | Again, this is only performed when the CU language allows this |
9155 | type of definitions. */ | |
9156 | ||
9157 | static void | |
9158 | add_partial_subprogram (struct partial_die_info *pdi, | |
9159 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9160 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9161 | { |
b1dc1806 | 9162 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9163 | { |
9164 | if (pdi->has_pc_info) | |
9165 | { | |
9166 | if (pdi->lowpc < *lowpc) | |
9167 | *lowpc = pdi->lowpc; | |
9168 | if (pdi->highpc > *highpc) | |
9169 | *highpc = pdi->highpc; | |
cdc07690 | 9170 | if (set_addrmap) |
5734ee8b | 9171 | { |
518817b3 | 9172 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9173 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9174 | CORE_ADDR baseaddr; | |
b926417a TT |
9175 | CORE_ADDR this_highpc; |
9176 | CORE_ADDR this_lowpc; | |
5734ee8b | 9177 | |
b3b3bada | 9178 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
9179 | this_lowpc |
9180 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9181 | pdi->lowpc + baseaddr) | |
9182 | - baseaddr); | |
9183 | this_highpc | |
9184 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9185 | pdi->highpc + baseaddr) | |
9186 | - baseaddr); | |
d320c2b5 | 9187 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 9188 | this_lowpc, this_highpc - 1, |
9291a0cd | 9189 | cu->per_cu->v.psymtab); |
5734ee8b | 9190 | } |
481860b3 GB |
9191 | } |
9192 | ||
9193 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9194 | { | |
bc30ff58 | 9195 | if (!pdi->is_declaration) |
e8d05480 JB |
9196 | /* Ignore subprogram DIEs that do not have a name, they are |
9197 | illegal. Do not emit a complaint at this point, we will | |
9198 | do so when we convert this psymtab into a symtab. */ | |
9199 | if (pdi->name) | |
9200 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9201 | } |
9202 | } | |
6e70227d | 9203 | |
bc30ff58 JB |
9204 | if (! pdi->has_children) |
9205 | return; | |
9206 | ||
0a4b0913 | 9207 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
9208 | { |
9209 | pdi = pdi->die_child; | |
9210 | while (pdi != NULL) | |
9211 | { | |
52356b79 | 9212 | pdi->fixup (cu); |
bc30ff58 | 9213 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9214 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9215 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9216 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9217 | pdi = pdi->die_sibling; |
9218 | } | |
9219 | } | |
9220 | } | |
9221 | ||
91c24f0a DC |
9222 | /* Read a partial die corresponding to an enumeration type. */ |
9223 | ||
72bf9492 DJ |
9224 | static void |
9225 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9226 | struct dwarf2_cu *cu) | |
91c24f0a | 9227 | { |
72bf9492 | 9228 | struct partial_die_info *pdi; |
91c24f0a DC |
9229 | |
9230 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9231 | add_partial_symbol (enum_pdi, cu); |
9232 | ||
9233 | pdi = enum_pdi->die_child; | |
9234 | while (pdi) | |
91c24f0a | 9235 | { |
72bf9492 | 9236 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9237 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9238 | else |
72bf9492 DJ |
9239 | add_partial_symbol (pdi, cu); |
9240 | pdi = pdi->die_sibling; | |
91c24f0a | 9241 | } |
91c24f0a DC |
9242 | } |
9243 | ||
6caca83c CC |
9244 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9245 | ||
9246 | static unsigned int | |
d521ce57 | 9247 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9248 | { |
9249 | unsigned int bytes_read; | |
9250 | ||
9251 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9252 | } | |
9253 | ||
685af9cd TT |
9254 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9255 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9256 | ||
4bb7a0a7 DJ |
9257 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9258 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9259 | the initial number. */ | |
9260 | ||
9261 | static struct abbrev_info * | |
685af9cd TT |
9262 | peek_die_abbrev (const die_reader_specs &reader, |
9263 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9264 | { |
685af9cd | 9265 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9266 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9267 | unsigned int abbrev_number |
9268 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9269 | |
9270 | if (abbrev_number == 0) | |
9271 | return NULL; | |
9272 | ||
685af9cd | 9273 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9274 | if (!abbrev) |
9275 | { | |
422b9917 | 9276 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9277 | " at offset %s [in module %s]"), |
422b9917 | 9278 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9279 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9280 | } |
9281 | ||
9282 | return abbrev; | |
9283 | } | |
9284 | ||
93311388 DE |
9285 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9286 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9287 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9288 | ||
d521ce57 TT |
9289 | static const gdb_byte * |
9290 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9291 | { |
4bb7a0a7 DJ |
9292 | while (1) |
9293 | { | |
685af9cd TT |
9294 | unsigned int bytes_read; |
9295 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9296 | ||
4bb7a0a7 DJ |
9297 | if (abbrev == NULL) |
9298 | return info_ptr + bytes_read; | |
9299 | else | |
dee91e82 | 9300 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9301 | } |
9302 | } | |
9303 | ||
93311388 DE |
9304 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9305 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9306 | abbrev corresponding to that skipped uleb128 should be passed in |
9307 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9308 | children. */ | |
9309 | ||
d521ce57 TT |
9310 | static const gdb_byte * |
9311 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9312 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9313 | { |
9314 | unsigned int bytes_read; | |
9315 | struct attribute attr; | |
dee91e82 DE |
9316 | bfd *abfd = reader->abfd; |
9317 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9318 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9319 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9320 | unsigned int form, i; |
9321 | ||
9322 | for (i = 0; i < abbrev->num_attrs; i++) | |
9323 | { | |
9324 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9325 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9326 | { | |
18a8505e AT |
9327 | bool ignored; |
9328 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
9329 | &ignored); | |
4bb7a0a7 | 9330 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9331 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9332 | else |
b9502d3f | 9333 | { |
9c541725 PA |
9334 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9335 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9336 | |
9337 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9338 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9339 | else if (sibling_ptr > reader->buffer_end) |
9340 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9341 | else |
9342 | return sibling_ptr; | |
9343 | } | |
4bb7a0a7 DJ |
9344 | } |
9345 | ||
9346 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9347 | form = abbrev->attrs[i].form; | |
9348 | skip_attribute: | |
9349 | switch (form) | |
9350 | { | |
4bb7a0a7 | 9351 | case DW_FORM_ref_addr: |
ae411497 TT |
9352 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9353 | and later it is offset sized. */ | |
9354 | if (cu->header.version == 2) | |
9355 | info_ptr += cu->header.addr_size; | |
9356 | else | |
9357 | info_ptr += cu->header.offset_size; | |
9358 | break; | |
36586728 TT |
9359 | case DW_FORM_GNU_ref_alt: |
9360 | info_ptr += cu->header.offset_size; | |
9361 | break; | |
ae411497 | 9362 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9363 | info_ptr += cu->header.addr_size; |
9364 | break; | |
9365 | case DW_FORM_data1: | |
9366 | case DW_FORM_ref1: | |
9367 | case DW_FORM_flag: | |
8fe0f950 | 9368 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9369 | info_ptr += 1; |
9370 | break; | |
2dc7f7b3 | 9371 | case DW_FORM_flag_present: |
43988095 | 9372 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9373 | break; |
4bb7a0a7 DJ |
9374 | case DW_FORM_data2: |
9375 | case DW_FORM_ref2: | |
8fe0f950 | 9376 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9377 | info_ptr += 2; |
9378 | break; | |
8fe0f950 AT |
9379 | case DW_FORM_strx3: |
9380 | info_ptr += 3; | |
9381 | break; | |
4bb7a0a7 DJ |
9382 | case DW_FORM_data4: |
9383 | case DW_FORM_ref4: | |
8fe0f950 | 9384 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9385 | info_ptr += 4; |
9386 | break; | |
9387 | case DW_FORM_data8: | |
9388 | case DW_FORM_ref8: | |
55f1336d | 9389 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9390 | info_ptr += 8; |
9391 | break; | |
0224619f JK |
9392 | case DW_FORM_data16: |
9393 | info_ptr += 16; | |
9394 | break; | |
4bb7a0a7 | 9395 | case DW_FORM_string: |
9b1c24c8 | 9396 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9397 | info_ptr += bytes_read; |
9398 | break; | |
2dc7f7b3 | 9399 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9400 | case DW_FORM_strp: |
36586728 | 9401 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9402 | info_ptr += cu->header.offset_size; |
9403 | break; | |
2dc7f7b3 | 9404 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9405 | case DW_FORM_block: |
9406 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9407 | info_ptr += bytes_read; | |
9408 | break; | |
9409 | case DW_FORM_block1: | |
9410 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9411 | break; | |
9412 | case DW_FORM_block2: | |
9413 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9414 | break; | |
9415 | case DW_FORM_block4: | |
9416 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9417 | break; | |
336d760d | 9418 | case DW_FORM_addrx: |
cf532bd1 | 9419 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9420 | case DW_FORM_sdata: |
9421 | case DW_FORM_udata: | |
9422 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9423 | case DW_FORM_GNU_addr_index: |
9424 | case DW_FORM_GNU_str_index: | |
18a8505e | 9425 | case DW_FORM_rnglistx: |
d521ce57 | 9426 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9427 | break; |
9428 | case DW_FORM_indirect: | |
9429 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9430 | info_ptr += bytes_read; | |
9431 | /* We need to continue parsing from here, so just go back to | |
9432 | the top. */ | |
9433 | goto skip_attribute; | |
9434 | ||
9435 | default: | |
3e43a32a MS |
9436 | error (_("Dwarf Error: Cannot handle %s " |
9437 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9438 | dwarf_form_name (form), |
9439 | bfd_get_filename (abfd)); | |
9440 | } | |
9441 | } | |
9442 | ||
9443 | if (abbrev->has_children) | |
dee91e82 | 9444 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9445 | else |
9446 | return info_ptr; | |
9447 | } | |
9448 | ||
93311388 | 9449 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9450 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9451 | |
d521ce57 | 9452 | static const gdb_byte * |
dee91e82 DE |
9453 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9454 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9455 | const gdb_byte *info_ptr) |
91c24f0a DC |
9456 | { |
9457 | /* Do we know the sibling already? */ | |
72bf9492 | 9458 | |
91c24f0a DC |
9459 | if (orig_pdi->sibling) |
9460 | return orig_pdi->sibling; | |
9461 | ||
9462 | /* Are there any children to deal with? */ | |
9463 | ||
9464 | if (!orig_pdi->has_children) | |
9465 | return info_ptr; | |
9466 | ||
4bb7a0a7 | 9467 | /* Skip the children the long way. */ |
91c24f0a | 9468 | |
dee91e82 | 9469 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9470 | } |
9471 | ||
257e7a09 | 9472 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9473 | not NULL. */ |
c906108c | 9474 | |
891813be TT |
9475 | void |
9476 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9477 | { |
ed2dc618 SM |
9478 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9479 | = get_dwarf2_per_objfile (objfile); | |
9480 | ||
077cbab2 TT |
9481 | gdb_assert (!readin); |
9482 | /* If this psymtab is constructed from a debug-only objfile, the | |
9483 | has_section_at_zero flag will not necessarily be correct. We | |
9484 | can get the correct value for this flag by looking at the data | |
9485 | associated with the (presumably stripped) associated objfile. */ | |
9486 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9487 | { |
077cbab2 TT |
9488 | struct dwarf2_per_objfile *dpo_backlink |
9489 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 9490 | |
077cbab2 TT |
9491 | dwarf2_per_objfile->has_section_at_zero |
9492 | = dpo_backlink->has_section_at_zero; | |
9493 | } | |
98bfdba5 | 9494 | |
077cbab2 | 9495 | dwarf2_per_objfile->reading_partial_symbols = 0; |
c906108c | 9496 | |
8566b89b | 9497 | expand_psymtab (objfile); |
95554aad | 9498 | |
ed2dc618 | 9499 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9500 | } |
9cdd5dbd DE |
9501 | \f |
9502 | /* Reading in full CUs. */ | |
c906108c | 9503 | |
10b3939b DJ |
9504 | /* Add PER_CU to the queue. */ |
9505 | ||
9506 | static void | |
95554aad TT |
9507 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9508 | enum language pretend_language) | |
10b3939b DJ |
9509 | { |
9510 | struct dwarf2_queue_item *item; | |
9511 | ||
9512 | per_cu->queued = 1; | |
8d749320 | 9513 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9514 | item->per_cu = per_cu; |
95554aad | 9515 | item->pretend_language = pretend_language; |
10b3939b DJ |
9516 | item->next = NULL; |
9517 | ||
9518 | if (dwarf2_queue == NULL) | |
9519 | dwarf2_queue = item; | |
9520 | else | |
9521 | dwarf2_queue_tail->next = item; | |
9522 | ||
9523 | dwarf2_queue_tail = item; | |
9524 | } | |
9525 | ||
89e63ee4 DE |
9526 | /* If PER_CU is not yet queued, add it to the queue. |
9527 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9528 | dependency. | |
0907af0c | 9529 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9530 | meaning either PER_CU is already queued or it is already loaded. |
9531 | ||
9532 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9533 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9534 | |
9535 | static int | |
89e63ee4 | 9536 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9537 | struct dwarf2_per_cu_data *per_cu, |
9538 | enum language pretend_language) | |
9539 | { | |
9540 | /* We may arrive here during partial symbol reading, if we need full | |
9541 | DIEs to process an unusual case (e.g. template arguments). Do | |
9542 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9543 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9544 | { |
9545 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9546 | return 1; | |
9547 | return 0; | |
9548 | } | |
9549 | ||
9550 | /* Mark the dependence relation so that we don't flush PER_CU | |
9551 | too early. */ | |
89e63ee4 DE |
9552 | if (dependent_cu != NULL) |
9553 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9554 | |
9555 | /* If it's already on the queue, we have nothing to do. */ | |
9556 | if (per_cu->queued) | |
9557 | return 0; | |
9558 | ||
9559 | /* If the compilation unit is already loaded, just mark it as | |
9560 | used. */ | |
9561 | if (per_cu->cu != NULL) | |
9562 | { | |
9563 | per_cu->cu->last_used = 0; | |
9564 | return 0; | |
9565 | } | |
9566 | ||
9567 | /* Add it to the queue. */ | |
9568 | queue_comp_unit (per_cu, pretend_language); | |
9569 | ||
9570 | return 1; | |
9571 | } | |
9572 | ||
10b3939b DJ |
9573 | /* Process the queue. */ |
9574 | ||
9575 | static void | |
ed2dc618 | 9576 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9577 | { |
9578 | struct dwarf2_queue_item *item, *next_item; | |
9579 | ||
b4f54984 | 9580 | if (dwarf_read_debug) |
45cfd468 DE |
9581 | { |
9582 | fprintf_unfiltered (gdb_stdlog, | |
9583 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9584 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9585 | } |
9586 | ||
03dd20cc DJ |
9587 | /* The queue starts out with one item, but following a DIE reference |
9588 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9589 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9590 | { | |
cc12ce38 DE |
9591 | if ((dwarf2_per_objfile->using_index |
9592 | ? !item->per_cu->v.quick->compunit_symtab | |
9593 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9594 | /* Skip dummy CUs. */ | |
9595 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9596 | { |
9597 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9598 | unsigned int debug_print_threshold; |
247f5c4f | 9599 | char buf[100]; |
f4dc4d17 | 9600 | |
247f5c4f | 9601 | if (per_cu->is_debug_types) |
f4dc4d17 | 9602 | { |
247f5c4f DE |
9603 | struct signatured_type *sig_type = |
9604 | (struct signatured_type *) per_cu; | |
9605 | ||
9d8780f0 | 9606 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9607 | hex_string (sig_type->signature), |
9d8780f0 | 9608 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9609 | /* There can be 100s of TUs. |
9610 | Only print them in verbose mode. */ | |
9611 | debug_print_threshold = 2; | |
f4dc4d17 | 9612 | } |
247f5c4f | 9613 | else |
73be47f5 | 9614 | { |
9d8780f0 SM |
9615 | sprintf (buf, "CU at offset %s", |
9616 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9617 | debug_print_threshold = 1; |
9618 | } | |
247f5c4f | 9619 | |
b4f54984 | 9620 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9621 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9622 | |
9623 | if (per_cu->is_debug_types) | |
9624 | process_full_type_unit (per_cu, item->pretend_language); | |
9625 | else | |
9626 | process_full_comp_unit (per_cu, item->pretend_language); | |
9627 | ||
b4f54984 | 9628 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9629 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9630 | } |
10b3939b DJ |
9631 | |
9632 | item->per_cu->queued = 0; | |
9633 | next_item = item->next; | |
9634 | xfree (item); | |
9635 | } | |
9636 | ||
9637 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9638 | |
b4f54984 | 9639 | if (dwarf_read_debug) |
45cfd468 DE |
9640 | { |
9641 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9642 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9643 | } |
10b3939b DJ |
9644 | } |
9645 | ||
10b3939b DJ |
9646 | /* Read in full symbols for PST, and anything it depends on. */ |
9647 | ||
8566b89b TT |
9648 | void |
9649 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9650 | { |
10b3939b | 9651 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 | 9652 | |
8566b89b | 9653 | if (readin) |
95554aad TT |
9654 | return; |
9655 | ||
0494dbec | 9656 | read_dependencies (objfile); |
aaa75496 | 9657 | |
8566b89b | 9658 | per_cu = per_cu_data; |
10b3939b DJ |
9659 | |
9660 | if (per_cu == NULL) | |
aaa75496 JB |
9661 | { |
9662 | /* It's an include file, no symbols to read for it. | |
9663 | Everything is in the parent symtab. */ | |
8566b89b | 9664 | readin = true; |
aaa75496 JB |
9665 | return; |
9666 | } | |
c906108c | 9667 | |
58f0c718 | 9668 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9669 | } |
9670 | ||
dee91e82 DE |
9671 | /* Trivial hash function for die_info: the hash value of a DIE |
9672 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9673 | |
dee91e82 DE |
9674 | static hashval_t |
9675 | die_hash (const void *item) | |
10b3939b | 9676 | { |
9a3c8263 | 9677 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9678 | |
9c541725 | 9679 | return to_underlying (die->sect_off); |
dee91e82 | 9680 | } |
63d06c5c | 9681 | |
dee91e82 DE |
9682 | /* Trivial comparison function for die_info structures: two DIEs |
9683 | are equal if they have the same offset. */ | |
98bfdba5 | 9684 | |
dee91e82 DE |
9685 | static int |
9686 | die_eq (const void *item_lhs, const void *item_rhs) | |
9687 | { | |
9a3c8263 SM |
9688 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9689 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9690 | |
9c541725 | 9691 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9692 | } |
c906108c | 9693 | |
c0ab21c2 | 9694 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9695 | |
dee91e82 | 9696 | static void |
c0ab21c2 TT |
9697 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9698 | bool skip_partial, | |
9699 | enum language pretend_language) | |
dee91e82 | 9700 | { |
c0ab21c2 TT |
9701 | gdb_assert (! this_cu->is_debug_types); |
9702 | ||
9703 | cutu_reader reader (this_cu, NULL, 1, 1, skip_partial); | |
9704 | if (reader.dummy_p) | |
9705 | return; | |
9706 | ||
9707 | struct dwarf2_cu *cu = reader.cu; | |
9708 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9709 | |
dee91e82 DE |
9710 | gdb_assert (cu->die_hash == NULL); |
9711 | cu->die_hash = | |
9712 | htab_create_alloc_ex (cu->header.length / 12, | |
9713 | die_hash, | |
9714 | die_eq, | |
9715 | NULL, | |
9716 | &cu->comp_unit_obstack, | |
9717 | hashtab_obstack_allocate, | |
9718 | dummy_obstack_deallocate); | |
e142c38c | 9719 | |
c0ab21c2 TT |
9720 | if (reader.has_children) |
9721 | reader.comp_unit_die->child | |
9722 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9723 | &info_ptr, reader.comp_unit_die); | |
9724 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9725 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9726 | |
9727 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9728 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9729 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9730 | or we won't be able to build types correctly. |
9731 | Similarly, if we do not read the producer, we can not apply | |
9732 | producer-specific interpretation. */ | |
c0ab21c2 | 9733 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
10b3939b DJ |
9734 | } |
9735 | ||
3da10d80 KS |
9736 | /* Add a DIE to the delayed physname list. */ |
9737 | ||
9738 | static void | |
9739 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9740 | const char *name, struct die_info *die, | |
9741 | struct dwarf2_cu *cu) | |
9742 | { | |
9743 | struct delayed_method_info mi; | |
9744 | mi.type = type; | |
9745 | mi.fnfield_index = fnfield_index; | |
9746 | mi.index = index; | |
9747 | mi.name = name; | |
9748 | mi.die = die; | |
c89b44cd | 9749 | cu->method_list.push_back (mi); |
3da10d80 KS |
9750 | } |
9751 | ||
3693fdb3 PA |
9752 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9753 | "const" / "volatile". If so, decrements LEN by the length of the | |
9754 | modifier and return true. Otherwise return false. */ | |
9755 | ||
9756 | template<size_t N> | |
9757 | static bool | |
9758 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9759 | { | |
9760 | size_t mod_len = sizeof (mod) - 1; | |
9761 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9762 | { | |
9763 | len -= mod_len; | |
9764 | return true; | |
9765 | } | |
9766 | return false; | |
9767 | } | |
9768 | ||
3da10d80 KS |
9769 | /* Compute the physnames of any methods on the CU's method list. |
9770 | ||
9771 | The computation of method physnames is delayed in order to avoid the | |
9772 | (bad) condition that one of the method's formal parameters is of an as yet | |
9773 | incomplete type. */ | |
9774 | ||
9775 | static void | |
9776 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9777 | { | |
3693fdb3 | 9778 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9779 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9780 | return; |
9781 | gdb_assert (cu->language == language_cplus); | |
9782 | ||
52941706 | 9783 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9784 | { |
1d06ead6 | 9785 | const char *physname; |
3da10d80 | 9786 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9787 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9788 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9789 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9790 | = physname ? physname : ""; |
3693fdb3 PA |
9791 | |
9792 | /* Since there's no tag to indicate whether a method is a | |
9793 | const/volatile overload, extract that information out of the | |
9794 | demangled name. */ | |
9795 | if (physname != NULL) | |
9796 | { | |
9797 | size_t len = strlen (physname); | |
9798 | ||
9799 | while (1) | |
9800 | { | |
9801 | if (physname[len] == ')') /* shortcut */ | |
9802 | break; | |
9803 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9804 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9805 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9806 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9807 | else |
9808 | break; | |
9809 | } | |
9810 | } | |
3da10d80 | 9811 | } |
c89b44cd TT |
9812 | |
9813 | /* The list is no longer needed. */ | |
9814 | cu->method_list.clear (); | |
3da10d80 KS |
9815 | } |
9816 | ||
a766d390 DE |
9817 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9818 | and it's not clear if/how imported objects will appear. | |
9819 | To keep Go support simple until that's worked out, | |
9820 | go back through what we've read and create something usable. | |
9821 | We could do this while processing each DIE, and feels kinda cleaner, | |
9822 | but that way is more invasive. | |
9823 | This is to, for example, allow the user to type "p var" or "b main" | |
9824 | without having to specify the package name, and allow lookups | |
9825 | of module.object to work in contexts that use the expression | |
9826 | parser. */ | |
9827 | ||
9828 | static void | |
9829 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9830 | { | |
421d1616 | 9831 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9832 | struct pending *list; |
9833 | int i; | |
9834 | ||
c24bdb02 | 9835 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9836 | list != NULL; |
9837 | list = list->next) | |
a766d390 DE |
9838 | { |
9839 | for (i = 0; i < list->nsyms; ++i) | |
9840 | { | |
9841 | struct symbol *sym = list->symbol[i]; | |
9842 | ||
c1b5c1eb | 9843 | if (sym->language () == language_go |
a766d390 DE |
9844 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9845 | { | |
421d1616 TT |
9846 | gdb::unique_xmalloc_ptr<char> this_package_name |
9847 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9848 | |
9849 | if (this_package_name == NULL) | |
9850 | continue; | |
9851 | if (package_name == NULL) | |
421d1616 | 9852 | package_name = std::move (this_package_name); |
a766d390 DE |
9853 | else |
9854 | { | |
518817b3 SM |
9855 | struct objfile *objfile |
9856 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9857 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9858 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9859 | (symbol_symtab (sym) != NULL |
9860 | ? symtab_to_filename_for_display | |
9861 | (symbol_symtab (sym)) | |
e3b94546 | 9862 | : objfile_name (objfile)), |
421d1616 | 9863 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9864 | } |
9865 | } | |
9866 | } | |
9867 | } | |
9868 | ||
9869 | if (package_name != NULL) | |
9870 | { | |
518817b3 | 9871 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9872 | const char *saved_package_name |
421d1616 | 9873 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name.get ()); |
19f392bc UW |
9874 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9875 | saved_package_name); | |
a766d390 DE |
9876 | struct symbol *sym; |
9877 | ||
e623cf5d | 9878 | sym = allocate_symbol (objfile); |
d3ecddab | 9879 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9880 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9881 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9882 | e.g., "main" finds the "main" module and not C's main(). */ | |
9883 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9884 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9885 | SYMBOL_TYPE (sym) = type; |
9886 | ||
c24bdb02 | 9887 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9888 | } |
9889 | } | |
9890 | ||
c9317f21 TT |
9891 | /* Allocate a fully-qualified name consisting of the two parts on the |
9892 | obstack. */ | |
9893 | ||
9894 | static const char * | |
9895 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9896 | { | |
9897 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9898 | } | |
9899 | ||
9900 | /* A helper that allocates a struct discriminant_info to attach to a | |
9901 | union type. */ | |
9902 | ||
9903 | static struct discriminant_info * | |
9904 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9905 | int default_index) | |
9906 | { | |
9907 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9908 | gdb_assert (discriminant_index == -1 |
9909 | || (discriminant_index >= 0 | |
9910 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9911 | gdb_assert (default_index == -1 |
c7b15a66 | 9912 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9913 | |
9914 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9915 | ||
9916 | struct discriminant_info *disc | |
9917 | = ((struct discriminant_info *) | |
9918 | TYPE_ZALLOC (type, | |
9919 | offsetof (struct discriminant_info, discriminants) | |
9920 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9921 | disc->default_index = default_index; | |
9922 | disc->discriminant_index = discriminant_index; | |
9923 | ||
9924 | struct dynamic_prop prop; | |
9925 | prop.kind = PROP_UNDEFINED; | |
9926 | prop.data.baton = disc; | |
9927 | ||
9928 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9929 | ||
9930 | return disc; | |
9931 | } | |
9932 | ||
9933 | /* Some versions of rustc emitted enums in an unusual way. | |
9934 | ||
9935 | Ordinary enums were emitted as unions. The first element of each | |
9936 | structure in the union was named "RUST$ENUM$DISR". This element | |
9937 | held the discriminant. | |
9938 | ||
9939 | These versions of Rust also implemented the "non-zero" | |
9940 | optimization. When the enum had two values, and one is empty and | |
9941 | the other holds a pointer that cannot be zero, the pointer is used | |
9942 | as the discriminant, with a zero value meaning the empty variant. | |
9943 | Here, the union's first member is of the form | |
9944 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9945 | where the fieldnos are the indices of the fields that should be | |
9946 | traversed in order to find the field (which may be several fields deep) | |
9947 | and the variantname is the name of the variant of the case when the | |
9948 | field is zero. | |
9949 | ||
9950 | This function recognizes whether TYPE is of one of these forms, | |
9951 | and, if so, smashes it to be a variant type. */ | |
9952 | ||
9953 | static void | |
9954 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9955 | { | |
9956 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9957 | ||
9958 | /* We don't need to deal with empty enums. */ | |
9959 | if (TYPE_NFIELDS (type) == 0) | |
9960 | return; | |
9961 | ||
9962 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9963 | if (TYPE_NFIELDS (type) == 1 | |
9964 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9965 | { | |
9966 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9967 | ||
9968 | /* Decode the field name to find the offset of the | |
9969 | discriminant. */ | |
9970 | ULONGEST bit_offset = 0; | |
9971 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9972 | while (name[0] >= '0' && name[0] <= '9') | |
9973 | { | |
9974 | char *tail; | |
9975 | unsigned long index = strtoul (name, &tail, 10); | |
9976 | name = tail; | |
9977 | if (*name != '$' | |
9978 | || index >= TYPE_NFIELDS (field_type) | |
9979 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9980 | != FIELD_LOC_KIND_BITPOS)) | |
9981 | { | |
b98664d3 | 9982 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9983 | "[in module %s]"), |
9984 | TYPE_FIELD_NAME (type, 0), | |
9985 | objfile_name (objfile)); | |
9986 | return; | |
9987 | } | |
9988 | ++name; | |
9989 | ||
9990 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9991 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9992 | } | |
9993 | ||
9994 | /* Make a union to hold the variants. */ | |
9995 | struct type *union_type = alloc_type (objfile); | |
9996 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9997 | TYPE_NFIELDS (union_type) = 3; | |
9998 | TYPE_FIELDS (union_type) | |
9999 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10000 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10001 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10002 | |
10003 | /* Put the discriminant must at index 0. */ | |
10004 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10005 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10006 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10007 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10008 | ||
10009 | /* The order of fields doesn't really matter, so put the real | |
10010 | field at index 1 and the data-less field at index 2. */ | |
10011 | struct discriminant_info *disc | |
10012 | = alloc_discriminant_info (union_type, 0, 1); | |
10013 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10014 | TYPE_FIELD_NAME (union_type, 1) | |
10015 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10016 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10017 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10018 | TYPE_FIELD_NAME (union_type, 1)); | |
10019 | ||
10020 | const char *dataless_name | |
10021 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10022 | name); | |
10023 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10024 | dataless_name); | |
10025 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10026 | /* NAME points into the original discriminant name, which | |
10027 | already has the correct lifetime. */ | |
10028 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10029 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10030 | disc->discriminants[2] = 0; | |
10031 | ||
10032 | /* Smash this type to be a structure type. We have to do this | |
10033 | because the type has already been recorded. */ | |
10034 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10035 | TYPE_NFIELDS (type) = 1; | |
10036 | TYPE_FIELDS (type) | |
10037 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10038 | ||
10039 | /* Install the variant part. */ | |
10040 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10041 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10042 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10043 | } | |
77c2dba3 TT |
10044 | /* A union with a single anonymous field is probably an old-style |
10045 | univariant enum. */ | |
10046 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 10047 | { |
c9317f21 TT |
10048 | /* Smash this type to be a structure type. We have to do this |
10049 | because the type has already been recorded. */ | |
10050 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10051 | ||
10052 | /* Make a union to hold the variants. */ | |
10053 | struct type *union_type = alloc_type (objfile); | |
10054 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10055 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10056 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10057 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10058 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10059 | ||
10060 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10061 | const char *variant_name | |
10062 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10063 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10064 | TYPE_NAME (field_type) | |
10065 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10066 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10067 | |
10068 | /* Install the union in the outer struct type. */ | |
10069 | TYPE_NFIELDS (type) = 1; | |
10070 | TYPE_FIELDS (type) | |
10071 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10072 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10073 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10074 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10075 | ||
10076 | alloc_discriminant_info (union_type, -1, 0); | |
10077 | } | |
10078 | else | |
10079 | { | |
10080 | struct type *disr_type = nullptr; | |
10081 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10082 | { | |
10083 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10084 | ||
a037790e TT |
10085 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10086 | { | |
10087 | /* All fields of a true enum will be structs. */ | |
10088 | return; | |
10089 | } | |
10090 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10091 | { |
10092 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10093 | disr_type = nullptr; |
c9317f21 TT |
10094 | } |
10095 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10096 | "RUST$ENUM$DISR") != 0) | |
10097 | { | |
10098 | /* Not a Rust enum. */ | |
10099 | return; | |
10100 | } | |
10101 | else | |
10102 | { | |
10103 | /* Found one. */ | |
10104 | break; | |
10105 | } | |
10106 | } | |
10107 | ||
10108 | /* If we got here without a discriminant, then it's probably | |
10109 | just a union. */ | |
10110 | if (disr_type == nullptr) | |
10111 | return; | |
10112 | ||
10113 | /* Smash this type to be a structure type. We have to do this | |
10114 | because the type has already been recorded. */ | |
10115 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10116 | ||
10117 | /* Make a union to hold the variants. */ | |
10118 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10119 | struct type *union_type = alloc_type (objfile); | |
10120 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10121 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10122 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10123 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10124 | TYPE_FIELDS (union_type) |
10125 | = (struct field *) TYPE_ZALLOC (union_type, | |
10126 | (TYPE_NFIELDS (union_type) | |
10127 | * sizeof (struct field))); | |
10128 | ||
10129 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10130 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10131 | ||
10132 | /* Install the discriminant at index 0 in the union. */ | |
10133 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10134 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10135 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10136 | ||
10137 | /* Install the union in the outer struct type. */ | |
10138 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10139 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10140 | TYPE_NFIELDS (type) = 1; | |
10141 | ||
10142 | /* Set the size and offset of the union type. */ | |
10143 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10144 | ||
10145 | /* We need a way to find the correct discriminant given a | |
10146 | variant name. For convenience we build a map here. */ | |
10147 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10148 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10149 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10150 | { | |
10151 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10152 | { | |
10153 | const char *name | |
10154 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10155 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10156 | } | |
10157 | } | |
10158 | ||
10159 | int n_fields = TYPE_NFIELDS (union_type); | |
10160 | struct discriminant_info *disc | |
10161 | = alloc_discriminant_info (union_type, 0, -1); | |
10162 | /* Skip the discriminant here. */ | |
10163 | for (int i = 1; i < n_fields; ++i) | |
10164 | { | |
10165 | /* Find the final word in the name of this variant's type. | |
10166 | That name can be used to look up the correct | |
10167 | discriminant. */ | |
10168 | const char *variant_name | |
10169 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10170 | i))); | |
10171 | ||
10172 | auto iter = discriminant_map.find (variant_name); | |
10173 | if (iter != discriminant_map.end ()) | |
10174 | disc->discriminants[i] = iter->second; | |
10175 | ||
bedda9ac | 10176 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10177 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10178 | if (TYPE_NFIELDS (sub_type) > 0) |
10179 | { | |
10180 | --TYPE_NFIELDS (sub_type); | |
10181 | ++TYPE_FIELDS (sub_type); | |
10182 | } | |
c9317f21 TT |
10183 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10184 | TYPE_NAME (sub_type) | |
10185 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10186 | TYPE_NAME (type), variant_name); | |
10187 | } | |
10188 | } | |
10189 | } | |
10190 | ||
10191 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10192 | ||
10193 | static void | |
10194 | rust_union_quirks (struct dwarf2_cu *cu) | |
10195 | { | |
10196 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10197 | for (type *type_ : cu->rust_unions) |
10198 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10199 | /* We don't need this any more. */ |
10200 | cu->rust_unions.clear (); | |
c9317f21 TT |
10201 | } |
10202 | ||
95554aad TT |
10203 | /* Return the symtab for PER_CU. This works properly regardless of |
10204 | whether we're using the index or psymtabs. */ | |
10205 | ||
43f3e411 DE |
10206 | static struct compunit_symtab * |
10207 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10208 | { |
ed2dc618 | 10209 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10210 | ? per_cu->v.quick->compunit_symtab |
10211 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10212 | } |
10213 | ||
10214 | /* A helper function for computing the list of all symbol tables | |
10215 | included by PER_CU. */ | |
10216 | ||
10217 | static void | |
4c39bc03 | 10218 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10219 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10220 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10221 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10222 | { |
10223 | void **slot; | |
43f3e411 | 10224 | struct compunit_symtab *cust; |
95554aad TT |
10225 | |
10226 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10227 | if (*slot != NULL) | |
10228 | { | |
10229 | /* This inclusion and its children have been processed. */ | |
10230 | return; | |
10231 | } | |
10232 | ||
10233 | *slot = per_cu; | |
10234 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10235 | cust = get_compunit_symtab (per_cu); |
10236 | if (cust != NULL) | |
ec94af83 DE |
10237 | { |
10238 | /* If this is a type unit only add its symbol table if we haven't | |
10239 | seen it yet (type unit per_cu's can share symtabs). */ | |
10240 | if (per_cu->is_debug_types) | |
10241 | { | |
43f3e411 | 10242 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10243 | if (*slot == NULL) |
10244 | { | |
43f3e411 | 10245 | *slot = cust; |
4c39bc03 | 10246 | result->push_back (cust); |
43f3e411 DE |
10247 | if (cust->user == NULL) |
10248 | cust->user = immediate_parent; | |
ec94af83 DE |
10249 | } |
10250 | } | |
10251 | else | |
f9125b6c | 10252 | { |
4c39bc03 | 10253 | result->push_back (cust); |
43f3e411 DE |
10254 | if (cust->user == NULL) |
10255 | cust->user = immediate_parent; | |
f9125b6c | 10256 | } |
ec94af83 | 10257 | } |
95554aad | 10258 | |
ae640021 AB |
10259 | if (!per_cu->imported_symtabs_empty ()) |
10260 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
10261 | { | |
10262 | recursively_compute_inclusions (result, all_children, | |
10263 | all_type_symtabs, ptr, cust); | |
10264 | } | |
95554aad TT |
10265 | } |
10266 | ||
43f3e411 | 10267 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10268 | PER_CU. */ |
10269 | ||
10270 | static void | |
43f3e411 | 10271 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10272 | { |
f4dc4d17 DE |
10273 | gdb_assert (! per_cu->is_debug_types); |
10274 | ||
ae640021 | 10275 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 10276 | { |
ae640021 | 10277 | int len; |
4c39bc03 | 10278 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10279 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10280 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10281 | |
10282 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10283 | if (cust == NULL) |
95554aad TT |
10284 | return; |
10285 | ||
10286 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10287 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10288 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10289 | NULL, xcalloc, xfree); | |
95554aad | 10290 | |
ae640021 | 10291 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
10292 | { |
10293 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 10294 | all_type_symtabs, ptr, cust); |
ec94af83 | 10295 | } |
95554aad | 10296 | |
ec94af83 | 10297 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10298 | len = result_symtabs.size (); |
43f3e411 | 10299 | cust->includes |
ed2dc618 | 10300 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10301 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10302 | memcpy (cust->includes, result_symtabs.data (), |
10303 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10304 | cust->includes[len] = NULL; |
95554aad | 10305 | |
95554aad | 10306 | htab_delete (all_children); |
ec94af83 | 10307 | htab_delete (all_type_symtabs); |
95554aad TT |
10308 | } |
10309 | } | |
10310 | ||
10311 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10312 | read. */ | |
10313 | ||
10314 | static void | |
ed2dc618 | 10315 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10316 | { |
71b73764 | 10317 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10318 | { |
10319 | if (! iter->is_debug_types) | |
43f3e411 | 10320 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10321 | } |
95554aad | 10322 | |
c5d0225d | 10323 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10324 | } |
10325 | ||
9cdd5dbd | 10326 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10327 | already been loaded into memory. */ |
10328 | ||
10329 | static void | |
95554aad TT |
10330 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10331 | enum language pretend_language) | |
10b3939b | 10332 | { |
10b3939b | 10333 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10334 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10335 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10336 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10337 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10338 | struct compunit_symtab *cust; |
10b3939b | 10339 | CORE_ADDR baseaddr; |
4359dff1 | 10340 | struct block *static_block; |
3e29f34a | 10341 | CORE_ADDR addr; |
10b3939b | 10342 | |
b3b3bada | 10343 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10344 | |
c89b44cd TT |
10345 | /* Clear the list here in case something was left over. */ |
10346 | cu->method_list.clear (); | |
10b3939b | 10347 | |
95554aad TT |
10348 | cu->language = pretend_language; |
10349 | cu->language_defn = language_def (cu->language); | |
10350 | ||
c906108c | 10351 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10352 | process_die (cu->dies, cu); |
c906108c | 10353 | |
a766d390 DE |
10354 | /* For now fudge the Go package. */ |
10355 | if (cu->language == language_go) | |
10356 | fixup_go_packaging (cu); | |
10357 | ||
5f48f8f3 | 10358 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10359 | should be complete, and it should now be safe to compute all of the |
10360 | physnames. */ | |
10361 | compute_delayed_physnames (cu); | |
3da10d80 | 10362 | |
c9317f21 TT |
10363 | if (cu->language == language_rust) |
10364 | rust_union_quirks (cu); | |
10365 | ||
fae299cd DC |
10366 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10367 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10368 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10369 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10370 | |
3e29f34a | 10371 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10372 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10373 | |
10374 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10375 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10376 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10377 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10378 | this comp unit. */ | |
10379 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10380 | ||
c24bdb02 | 10381 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10382 | SECT_OFF_TEXT (objfile), |
10383 | 0); | |
c906108c | 10384 | |
43f3e411 | 10385 | if (cust != NULL) |
c906108c | 10386 | { |
df15bd07 | 10387 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10388 | |
8be455d7 JK |
10389 | /* Set symtab language to language from DW_AT_language. If the |
10390 | compilation is from a C file generated by language preprocessors, do | |
10391 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10392 | if (!(cu->language == language_c |
40e3ad0e | 10393 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10394 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10395 | |
10396 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10397 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10398 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10399 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10400 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10401 | |
10402 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10403 | needed, it would be wrong due to missing DW_AT_producer there. | |
10404 | ||
10405 | Still one can confuse GDB by using non-standard GCC compilation | |
10406 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10407 | */ |
ab260dad | 10408 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10409 | cust->locations_valid = 1; |
e0d00bc7 JK |
10410 | |
10411 | if (gcc_4_minor >= 5) | |
43f3e411 | 10412 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10413 | |
43f3e411 | 10414 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10415 | } |
9291a0cd TT |
10416 | |
10417 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10418 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10419 | else |
10420 | { | |
891813be | 10421 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10422 | pst->compunit_symtab = cust; |
6d94535f | 10423 | pst->readin = true; |
9291a0cd | 10424 | } |
c906108c | 10425 | |
95554aad | 10426 | /* Push it for inclusion processing later. */ |
c5d0225d | 10427 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10428 | |
10429 | /* Not needed any more. */ | |
c24bdb02 | 10430 | cu->reset_builder (); |
f4dc4d17 | 10431 | } |
45cfd468 | 10432 | |
f4dc4d17 DE |
10433 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10434 | already been loaded into memory. */ | |
10435 | ||
10436 | static void | |
10437 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10438 | enum language pretend_language) | |
10439 | { | |
10440 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10441 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10442 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10443 | struct compunit_symtab *cust; |
0186c6a7 DE |
10444 | struct signatured_type *sig_type; |
10445 | ||
10446 | gdb_assert (per_cu->is_debug_types); | |
10447 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10448 | |
c89b44cd TT |
10449 | /* Clear the list here in case something was left over. */ |
10450 | cu->method_list.clear (); | |
f4dc4d17 | 10451 | |
f4dc4d17 DE |
10452 | cu->language = pretend_language; |
10453 | cu->language_defn = language_def (cu->language); | |
10454 | ||
10455 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10456 | process_die (cu->dies, cu); | |
10457 | ||
10458 | /* For now fudge the Go package. */ | |
10459 | if (cu->language == language_go) | |
10460 | fixup_go_packaging (cu); | |
10461 | ||
5f48f8f3 | 10462 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10463 | should be complete, and it should now be safe to compute all of the |
10464 | physnames. */ | |
10465 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10466 | |
c9317f21 TT |
10467 | if (cu->language == language_rust) |
10468 | rust_union_quirks (cu); | |
10469 | ||
f4dc4d17 DE |
10470 | /* TUs share symbol tables. |
10471 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10472 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10473 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10474 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10475 | { |
c24bdb02 KS |
10476 | buildsym_compunit *builder = cu->get_builder (); |
10477 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10478 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10479 | |
43f3e411 | 10480 | if (cust != NULL) |
f4dc4d17 DE |
10481 | { |
10482 | /* Set symtab language to language from DW_AT_language. If the | |
10483 | compilation is from a C file generated by language preprocessors, | |
10484 | do not set the language if it was already deduced by | |
10485 | start_subfile. */ | |
43f3e411 DE |
10486 | if (!(cu->language == language_c |
10487 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10488 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10489 | } |
10490 | } | |
10491 | else | |
10492 | { | |
c24bdb02 | 10493 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10494 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10495 | } |
10496 | ||
10497 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10498 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10499 | else |
10500 | { | |
891813be | 10501 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10502 | pst->compunit_symtab = cust; |
6d94535f | 10503 | pst->readin = true; |
45cfd468 | 10504 | } |
804d2729 TT |
10505 | |
10506 | /* Not needed any more. */ | |
c24bdb02 | 10507 | cu->reset_builder (); |
c906108c SS |
10508 | } |
10509 | ||
95554aad TT |
10510 | /* Process an imported unit DIE. */ |
10511 | ||
10512 | static void | |
10513 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10514 | { | |
10515 | struct attribute *attr; | |
10516 | ||
f4dc4d17 DE |
10517 | /* For now we don't handle imported units in type units. */ |
10518 | if (cu->per_cu->is_debug_types) | |
10519 | { | |
10520 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10521 | " supported in type units [in module %s]"), | |
518817b3 | 10522 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10523 | } |
10524 | ||
95554aad TT |
10525 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10526 | if (attr != NULL) | |
10527 | { | |
9c541725 PA |
10528 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10529 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10530 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10531 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10532 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10533 | |
69d751e3 | 10534 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10535 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10536 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10537 | |
ae640021 | 10538 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10539 | } |
10540 | } | |
10541 | ||
4c8aa72d PA |
10542 | /* RAII object that represents a process_die scope: i.e., |
10543 | starts/finishes processing a DIE. */ | |
10544 | class process_die_scope | |
adde2bff | 10545 | { |
4c8aa72d PA |
10546 | public: |
10547 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10548 | : m_die (die), m_cu (cu) | |
10549 | { | |
10550 | /* We should only be processing DIEs not already in process. */ | |
10551 | gdb_assert (!m_die->in_process); | |
10552 | m_die->in_process = true; | |
10553 | } | |
8c3cb9fa | 10554 | |
4c8aa72d PA |
10555 | ~process_die_scope () |
10556 | { | |
10557 | m_die->in_process = false; | |
10558 | ||
10559 | /* If we're done processing the DIE for the CU that owns the line | |
10560 | header, we don't need the line header anymore. */ | |
10561 | if (m_cu->line_header_die_owner == m_die) | |
10562 | { | |
10563 | delete m_cu->line_header; | |
10564 | m_cu->line_header = NULL; | |
10565 | m_cu->line_header_die_owner = NULL; | |
10566 | } | |
10567 | } | |
10568 | ||
10569 | private: | |
10570 | die_info *m_die; | |
10571 | dwarf2_cu *m_cu; | |
10572 | }; | |
adde2bff | 10573 | |
c906108c SS |
10574 | /* Process a die and its children. */ |
10575 | ||
10576 | static void | |
e7c27a73 | 10577 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10578 | { |
4c8aa72d | 10579 | process_die_scope scope (die, cu); |
adde2bff | 10580 | |
c906108c SS |
10581 | switch (die->tag) |
10582 | { | |
10583 | case DW_TAG_padding: | |
10584 | break; | |
10585 | case DW_TAG_compile_unit: | |
95554aad | 10586 | case DW_TAG_partial_unit: |
e7c27a73 | 10587 | read_file_scope (die, cu); |
c906108c | 10588 | break; |
348e048f DE |
10589 | case DW_TAG_type_unit: |
10590 | read_type_unit_scope (die, cu); | |
10591 | break; | |
c906108c | 10592 | case DW_TAG_subprogram: |
0a4b0913 AB |
10593 | /* Nested subprograms in Fortran get a prefix. */ |
10594 | if (cu->language == language_fortran | |
10595 | && die->parent != NULL | |
10596 | && die->parent->tag == DW_TAG_subprogram) | |
10597 | cu->processing_has_namespace_info = true; | |
10598 | /* Fall through. */ | |
c906108c | 10599 | case DW_TAG_inlined_subroutine: |
edb3359d | 10600 | read_func_scope (die, cu); |
c906108c SS |
10601 | break; |
10602 | case DW_TAG_lexical_block: | |
14898363 L |
10603 | case DW_TAG_try_block: |
10604 | case DW_TAG_catch_block: | |
e7c27a73 | 10605 | read_lexical_block_scope (die, cu); |
c906108c | 10606 | break; |
216f72a1 | 10607 | case DW_TAG_call_site: |
96408a79 SA |
10608 | case DW_TAG_GNU_call_site: |
10609 | read_call_site_scope (die, cu); | |
10610 | break; | |
c906108c | 10611 | case DW_TAG_class_type: |
680b30c7 | 10612 | case DW_TAG_interface_type: |
c906108c SS |
10613 | case DW_TAG_structure_type: |
10614 | case DW_TAG_union_type: | |
134d01f1 | 10615 | process_structure_scope (die, cu); |
c906108c SS |
10616 | break; |
10617 | case DW_TAG_enumeration_type: | |
134d01f1 | 10618 | process_enumeration_scope (die, cu); |
c906108c | 10619 | break; |
134d01f1 | 10620 | |
f792889a DJ |
10621 | /* These dies have a type, but processing them does not create |
10622 | a symbol or recurse to process the children. Therefore we can | |
10623 | read them on-demand through read_type_die. */ | |
c906108c | 10624 | case DW_TAG_subroutine_type: |
72019c9c | 10625 | case DW_TAG_set_type: |
c906108c | 10626 | case DW_TAG_array_type: |
c906108c | 10627 | case DW_TAG_pointer_type: |
c906108c | 10628 | case DW_TAG_ptr_to_member_type: |
c906108c | 10629 | case DW_TAG_reference_type: |
4297a3f0 | 10630 | case DW_TAG_rvalue_reference_type: |
c906108c | 10631 | case DW_TAG_string_type: |
c906108c | 10632 | break; |
134d01f1 | 10633 | |
c906108c | 10634 | case DW_TAG_base_type: |
a02abb62 | 10635 | case DW_TAG_subrange_type: |
cb249c71 | 10636 | case DW_TAG_typedef: |
134d01f1 DJ |
10637 | /* Add a typedef symbol for the type definition, if it has a |
10638 | DW_AT_name. */ | |
f792889a | 10639 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10640 | break; |
c906108c | 10641 | case DW_TAG_common_block: |
e7c27a73 | 10642 | read_common_block (die, cu); |
c906108c SS |
10643 | break; |
10644 | case DW_TAG_common_inclusion: | |
10645 | break; | |
d9fa45fe | 10646 | case DW_TAG_namespace: |
9068261f | 10647 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10648 | read_namespace (die, cu); |
d9fa45fe | 10649 | break; |
5d7cb8df | 10650 | case DW_TAG_module: |
9068261f | 10651 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10652 | read_module (die, cu); |
10653 | break; | |
d9fa45fe | 10654 | case DW_TAG_imported_declaration: |
9068261f | 10655 | cu->processing_has_namespace_info = true; |
74921315 KS |
10656 | if (read_namespace_alias (die, cu)) |
10657 | break; | |
86a73007 TT |
10658 | /* The declaration is not a global namespace alias. */ |
10659 | /* Fall through. */ | |
d9fa45fe | 10660 | case DW_TAG_imported_module: |
9068261f | 10661 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10662 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10663 | || cu->language != language_fortran)) | |
b98664d3 | 10664 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10665 | dwarf_tag_name (die->tag)); |
10666 | read_import_statement (die, cu); | |
d9fa45fe | 10667 | break; |
95554aad TT |
10668 | |
10669 | case DW_TAG_imported_unit: | |
10670 | process_imported_unit_die (die, cu); | |
10671 | break; | |
10672 | ||
71a3c369 TT |
10673 | case DW_TAG_variable: |
10674 | read_variable (die, cu); | |
10675 | break; | |
10676 | ||
c906108c | 10677 | default: |
e7c27a73 | 10678 | new_symbol (die, NULL, cu); |
c906108c SS |
10679 | break; |
10680 | } | |
10681 | } | |
ca69b9e6 DE |
10682 | \f |
10683 | /* DWARF name computation. */ | |
c906108c | 10684 | |
94af9270 KS |
10685 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10686 | needs to have the name of the scope prepended to the name listed in the | |
10687 | die. */ | |
10688 | ||
10689 | static int | |
10690 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10691 | { | |
1c809c68 TT |
10692 | struct attribute *attr; |
10693 | ||
94af9270 KS |
10694 | switch (die->tag) |
10695 | { | |
10696 | case DW_TAG_namespace: | |
10697 | case DW_TAG_typedef: | |
10698 | case DW_TAG_class_type: | |
10699 | case DW_TAG_interface_type: | |
10700 | case DW_TAG_structure_type: | |
10701 | case DW_TAG_union_type: | |
10702 | case DW_TAG_enumeration_type: | |
10703 | case DW_TAG_enumerator: | |
10704 | case DW_TAG_subprogram: | |
08a76f8a | 10705 | case DW_TAG_inlined_subroutine: |
94af9270 | 10706 | case DW_TAG_member: |
74921315 | 10707 | case DW_TAG_imported_declaration: |
94af9270 KS |
10708 | return 1; |
10709 | ||
10710 | case DW_TAG_variable: | |
c2b0a229 | 10711 | case DW_TAG_constant: |
94af9270 KS |
10712 | /* We only need to prefix "globally" visible variables. These include |
10713 | any variable marked with DW_AT_external or any variable that | |
10714 | lives in a namespace. [Variables in anonymous namespaces | |
10715 | require prefixing, but they are not DW_AT_external.] */ | |
10716 | ||
10717 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10718 | { | |
10719 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10720 | |
94af9270 KS |
10721 | return die_needs_namespace (die_specification (die, &spec_cu), |
10722 | spec_cu); | |
10723 | } | |
10724 | ||
1c809c68 | 10725 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10726 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10727 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10728 | return 0; |
10729 | /* A variable in a lexical block of some kind does not need a | |
10730 | namespace, even though in C++ such variables may be external | |
10731 | and have a mangled name. */ | |
10732 | if (die->parent->tag == DW_TAG_lexical_block | |
10733 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10734 | || die->parent->tag == DW_TAG_catch_block |
10735 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10736 | return 0; |
10737 | return 1; | |
94af9270 KS |
10738 | |
10739 | default: | |
10740 | return 0; | |
10741 | } | |
10742 | } | |
10743 | ||
73b9be8b KS |
10744 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10745 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10746 | defined for the given DIE. */ | |
10747 | ||
10748 | static struct attribute * | |
10749 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10750 | { | |
10751 | struct attribute *attr; | |
10752 | ||
10753 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10754 | if (attr == NULL) | |
10755 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10756 | ||
10757 | return attr; | |
10758 | } | |
10759 | ||
10760 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10761 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10762 | defined for the given DIE. */ | |
10763 | ||
10764 | static const char * | |
10765 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10766 | { | |
10767 | const char *linkage_name; | |
10768 | ||
10769 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10770 | if (linkage_name == NULL) | |
10771 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10772 | ||
10773 | return linkage_name; | |
10774 | } | |
10775 | ||
94af9270 | 10776 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10777 | compute the physname for the object, which include a method's: |
9c37b5ae | 10778 | - formal parameters (C++), |
a766d390 | 10779 | - receiver type (Go), |
a766d390 DE |
10780 | |
10781 | The term "physname" is a bit confusing. | |
10782 | For C++, for example, it is the demangled name. | |
10783 | For Go, for example, it's the mangled name. | |
94af9270 | 10784 | |
af6b7be1 JB |
10785 | For Ada, return the DIE's linkage name rather than the fully qualified |
10786 | name. PHYSNAME is ignored.. | |
10787 | ||
94af9270 KS |
10788 | The result is allocated on the objfile_obstack and canonicalized. */ |
10789 | ||
10790 | static const char * | |
15d034d0 TT |
10791 | dwarf2_compute_name (const char *name, |
10792 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10793 | int physname) |
10794 | { | |
518817b3 | 10795 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10796 | |
94af9270 KS |
10797 | if (name == NULL) |
10798 | name = dwarf2_name (die, cu); | |
10799 | ||
2ee7123e DE |
10800 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10801 | but otherwise compute it by typename_concat inside GDB. | |
10802 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10803 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10804 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10805 | will set the demangled name to the result of dwarf2_full_name, and it is |
10806 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10807 | if (cu->language == language_ada |
10808 | || (cu->language == language_fortran && physname)) | |
10809 | { | |
10810 | /* For Ada unit, we prefer the linkage name over the name, as | |
10811 | the former contains the exported name, which the user expects | |
10812 | to be able to reference. Ideally, we want the user to be able | |
10813 | to reference this entity using either natural or linkage name, | |
10814 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10815 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10816 | |
2ee7123e DE |
10817 | if (linkage_name != NULL) |
10818 | return linkage_name; | |
f55ee35c JK |
10819 | } |
10820 | ||
94af9270 KS |
10821 | /* These are the only languages we know how to qualify names in. */ |
10822 | if (name != NULL | |
9c37b5ae | 10823 | && (cu->language == language_cplus |
c44af4eb TT |
10824 | || cu->language == language_fortran || cu->language == language_d |
10825 | || cu->language == language_rust)) | |
94af9270 KS |
10826 | { |
10827 | if (die_needs_namespace (die, cu)) | |
10828 | { | |
0d5cff50 | 10829 | const char *prefix; |
34a68019 | 10830 | const char *canonical_name = NULL; |
94af9270 | 10831 | |
d7e74731 PA |
10832 | string_file buf; |
10833 | ||
94af9270 | 10834 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10835 | if (*prefix != '\0') |
10836 | { | |
43816ebc TT |
10837 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10838 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10839 | |
43816ebc | 10840 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10841 | } |
10842 | else | |
d7e74731 | 10843 | buf.puts (name); |
94af9270 | 10844 | |
98bfdba5 PA |
10845 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10846 | as children with DW_TAG_template_type_param or | |
10847 | DW_TAG_value_type_param. If the latter, add them to the name | |
10848 | here. If the name already has template parameters, then | |
10849 | skip this step; some versions of GCC emit both, and | |
10850 | it is more efficient to use the pre-computed name. | |
10851 | ||
10852 | Something to keep in mind about this process: it is very | |
10853 | unlikely, or in some cases downright impossible, to produce | |
10854 | something that will match the mangled name of a function. | |
10855 | If the definition of the function has the same debug info, | |
10856 | we should be able to match up with it anyway. But fallbacks | |
10857 | using the minimal symbol, for instance to find a method | |
10858 | implemented in a stripped copy of libstdc++, will not work. | |
10859 | If we do not have debug info for the definition, we will have to | |
10860 | match them up some other way. | |
10861 | ||
10862 | When we do name matching there is a related problem with function | |
10863 | templates; two instantiated function templates are allowed to | |
10864 | differ only by their return types, which we do not add here. */ | |
10865 | ||
10866 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10867 | { | |
10868 | struct attribute *attr; | |
10869 | struct die_info *child; | |
10870 | int first = 1; | |
10871 | ||
10872 | die->building_fullname = 1; | |
10873 | ||
10874 | for (child = die->child; child != NULL; child = child->sibling) | |
10875 | { | |
10876 | struct type *type; | |
12df843f | 10877 | LONGEST value; |
d521ce57 | 10878 | const gdb_byte *bytes; |
98bfdba5 PA |
10879 | struct dwarf2_locexpr_baton *baton; |
10880 | struct value *v; | |
10881 | ||
10882 | if (child->tag != DW_TAG_template_type_param | |
10883 | && child->tag != DW_TAG_template_value_param) | |
10884 | continue; | |
10885 | ||
10886 | if (first) | |
10887 | { | |
d7e74731 | 10888 | buf.puts ("<"); |
98bfdba5 PA |
10889 | first = 0; |
10890 | } | |
10891 | else | |
d7e74731 | 10892 | buf.puts (", "); |
98bfdba5 PA |
10893 | |
10894 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10895 | if (attr == NULL) | |
10896 | { | |
b98664d3 | 10897 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10898 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10899 | continue; |
10900 | } | |
10901 | type = die_type (child, cu); | |
10902 | ||
10903 | if (child->tag == DW_TAG_template_type_param) | |
10904 | { | |
c1ec8cea TT |
10905 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10906 | &type_print_raw_options); | |
98bfdba5 PA |
10907 | continue; |
10908 | } | |
10909 | ||
10910 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10911 | if (attr == NULL) | |
10912 | { | |
b98664d3 | 10913 | complaint (_("template parameter missing " |
3e43a32a | 10914 | "DW_AT_const_value")); |
d7e74731 | 10915 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10916 | continue; |
10917 | } | |
10918 | ||
10919 | dwarf2_const_value_attr (attr, type, name, | |
10920 | &cu->comp_unit_obstack, cu, | |
10921 | &value, &bytes, &baton); | |
10922 | ||
10923 | if (TYPE_NOSIGN (type)) | |
10924 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10925 | changed, this can use value_print instead. */ | |
d7e74731 | 10926 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10927 | else |
10928 | { | |
10929 | struct value_print_options opts; | |
10930 | ||
10931 | if (baton != NULL) | |
10932 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10933 | baton->data, | |
10934 | baton->size, | |
10935 | baton->per_cu); | |
10936 | else if (bytes != NULL) | |
10937 | { | |
10938 | v = allocate_value (type); | |
10939 | memcpy (value_contents_writeable (v), bytes, | |
10940 | TYPE_LENGTH (type)); | |
10941 | } | |
10942 | else | |
10943 | v = value_from_longest (type, value); | |
10944 | ||
3e43a32a MS |
10945 | /* Specify decimal so that we do not depend on |
10946 | the radix. */ | |
98bfdba5 PA |
10947 | get_formatted_print_options (&opts, 'd'); |
10948 | opts.raw = 1; | |
d7e74731 | 10949 | value_print (v, &buf, &opts); |
98bfdba5 | 10950 | release_value (v); |
98bfdba5 PA |
10951 | } |
10952 | } | |
10953 | ||
10954 | die->building_fullname = 0; | |
10955 | ||
10956 | if (!first) | |
10957 | { | |
10958 | /* Close the argument list, with a space if necessary | |
10959 | (nested templates). */ | |
d7e74731 PA |
10960 | if (!buf.empty () && buf.string ().back () == '>') |
10961 | buf.puts (" >"); | |
98bfdba5 | 10962 | else |
d7e74731 | 10963 | buf.puts (">"); |
98bfdba5 PA |
10964 | } |
10965 | } | |
10966 | ||
9c37b5ae | 10967 | /* For C++ methods, append formal parameter type |
94af9270 | 10968 | information, if PHYSNAME. */ |
6e70227d | 10969 | |
94af9270 | 10970 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10971 | && cu->language == language_cplus) |
94af9270 KS |
10972 | { |
10973 | struct type *type = read_type_die (die, cu); | |
10974 | ||
d7e74731 | 10975 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10976 | &type_print_raw_options); |
94af9270 | 10977 | |
9c37b5ae | 10978 | if (cu->language == language_cplus) |
94af9270 | 10979 | { |
60430eff DJ |
10980 | /* Assume that an artificial first parameter is |
10981 | "this", but do not crash if it is not. RealView | |
10982 | marks unnamed (and thus unused) parameters as | |
10983 | artificial; there is no way to differentiate | |
10984 | the two cases. */ | |
94af9270 KS |
10985 | if (TYPE_NFIELDS (type) > 0 |
10986 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10987 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10988 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10989 | 0)))) | |
d7e74731 | 10990 | buf.puts (" const"); |
94af9270 KS |
10991 | } |
10992 | } | |
10993 | ||
d7e74731 | 10994 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10995 | |
10996 | if (cu->language == language_cplus) | |
34a68019 | 10997 | canonical_name |
322a8516 | 10998 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10999 | &objfile->per_bfd->storage_obstack); |
11000 | ||
11001 | /* If we only computed INTERMEDIATE_NAME, or if | |
11002 | INTERMEDIATE_NAME is already canonical, then we need to | |
11003 | copy it to the appropriate obstack. */ | |
322a8516 | 11004 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
11005 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
11006 | intermediate_name); | |
34a68019 TT |
11007 | else |
11008 | name = canonical_name; | |
94af9270 KS |
11009 | } |
11010 | } | |
11011 | ||
11012 | return name; | |
11013 | } | |
11014 | ||
0114d602 DJ |
11015 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11016 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11017 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11018 | not have a name. NAME may either be from a previous call to |
11019 | dwarf2_name or NULL. | |
11020 | ||
9c37b5ae | 11021 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11022 | |
11023 | static const char * | |
15d034d0 | 11024 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11025 | { |
94af9270 KS |
11026 | return dwarf2_compute_name (name, die, cu, 0); |
11027 | } | |
0114d602 | 11028 | |
94af9270 KS |
11029 | /* Construct a physname for the given DIE in CU. NAME may either be |
11030 | from a previous call to dwarf2_name or NULL. The result will be | |
11031 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11032 | name. | |
0114d602 | 11033 | |
9c37b5ae | 11034 | The output string will be canonicalized (if C++). */ |
0114d602 | 11035 | |
94af9270 | 11036 | static const char * |
15d034d0 | 11037 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11038 | { |
518817b3 | 11039 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11040 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11041 | int need_copy = 1; |
11042 | ||
11043 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11044 | on its own. */ | |
11045 | if (!die_needs_namespace (die, cu)) | |
11046 | return dwarf2_compute_name (name, die, cu, 1); | |
11047 | ||
73b9be8b | 11048 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11049 | |
e98c9e7c TT |
11050 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11051 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11052 | if (cu->language == language_rust && mangled != NULL | |
11053 | && strchr (mangled, '{') != NULL) | |
11054 | mangled = NULL; | |
11055 | ||
900e11f9 JK |
11056 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11057 | has computed. */ | |
791afaa2 | 11058 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11059 | if (mangled != NULL) |
900e11f9 | 11060 | { |
900e11f9 | 11061 | |
59cc4834 JB |
11062 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11063 | { | |
11064 | /* Do nothing (do not demangle the symbol name). */ | |
11065 | } | |
11066 | else if (cu->language == language_go) | |
a766d390 | 11067 | { |
5e2db402 TT |
11068 | /* This is a lie, but we already lie to the caller new_symbol. |
11069 | new_symbol assumes we return the mangled name. | |
a766d390 | 11070 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11071 | } |
11072 | else | |
11073 | { | |
0eb876f5 JB |
11074 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11075 | their return type. It is easier for GDB users to search | |
11076 | for such functions as `name(params)' than `long name(params)'. | |
11077 | In such case the minimal symbol names do not match the full | |
11078 | symbol names but for template functions there is never a need | |
11079 | to look up their definition from their declaration so | |
11080 | the only disadvantage remains the minimal symbol variant | |
11081 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11082 | demangled.reset (gdb_demangle (mangled, |
11083 | (DMGL_PARAMS | DMGL_ANSI | |
11084 | | DMGL_RET_DROP))); | |
a766d390 | 11085 | } |
900e11f9 | 11086 | if (demangled) |
791afaa2 | 11087 | canon = demangled.get (); |
900e11f9 JK |
11088 | else |
11089 | { | |
11090 | canon = mangled; | |
11091 | need_copy = 0; | |
11092 | } | |
11093 | } | |
11094 | ||
11095 | if (canon == NULL || check_physname) | |
11096 | { | |
11097 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11098 | ||
11099 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11100 | { | |
11101 | /* It may not mean a bug in GDB. The compiler could also | |
11102 | compute DW_AT_linkage_name incorrectly. But in such case | |
11103 | GDB would need to be bug-to-bug compatible. */ | |
11104 | ||
b98664d3 | 11105 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11106 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11107 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11108 | objfile_name (objfile)); |
900e11f9 JK |
11109 | |
11110 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11111 | is available here - over computed PHYSNAME. It is safer | |
11112 | against both buggy GDB and buggy compilers. */ | |
11113 | ||
11114 | retval = canon; | |
11115 | } | |
11116 | else | |
11117 | { | |
11118 | retval = physname; | |
11119 | need_copy = 0; | |
11120 | } | |
11121 | } | |
11122 | else | |
11123 | retval = canon; | |
11124 | ||
11125 | if (need_copy) | |
021887d8 | 11126 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 11127 | |
900e11f9 | 11128 | return retval; |
0114d602 DJ |
11129 | } |
11130 | ||
74921315 KS |
11131 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11132 | a new symbol for it. | |
11133 | ||
11134 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11135 | ||
11136 | static int | |
11137 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11138 | { | |
11139 | struct attribute *attr; | |
11140 | ||
11141 | /* If the die does not have a name, this is not a namespace | |
11142 | alias. */ | |
11143 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11144 | if (attr != NULL) | |
11145 | { | |
11146 | int num; | |
11147 | struct die_info *d = die; | |
11148 | struct dwarf2_cu *imported_cu = cu; | |
11149 | ||
11150 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11151 | keep inspecting DIEs until we hit the underlying import. */ | |
11152 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11153 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11154 | { | |
11155 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11156 | if (attr == NULL) | |
11157 | break; | |
11158 | ||
11159 | d = follow_die_ref (d, attr, &imported_cu); | |
11160 | if (d->tag != DW_TAG_imported_declaration) | |
11161 | break; | |
11162 | } | |
11163 | ||
11164 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11165 | { | |
b98664d3 | 11166 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11167 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11168 | return 0; |
11169 | } | |
11170 | ||
11171 | if (attr != NULL) | |
11172 | { | |
11173 | struct type *type; | |
9c541725 | 11174 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11175 | |
9c541725 | 11176 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11177 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11178 | { | |
11179 | /* This declaration is a global namespace alias. Add | |
11180 | a symbol for it whose type is the aliased namespace. */ | |
11181 | new_symbol (die, type, cu); | |
11182 | return 1; | |
11183 | } | |
11184 | } | |
11185 | } | |
11186 | ||
11187 | return 0; | |
11188 | } | |
11189 | ||
22cee43f | 11190 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11191 | current context for CU. |
22cee43f PMR |
11192 | |
11193 | For Ada, imported declarations can materialize renamings, which *may* be | |
11194 | global. However it is impossible (for now?) in DWARF to distinguish | |
11195 | "external" imported declarations and "static" ones. As all imported | |
11196 | declarations seem to be static in all other languages, make them all CU-wide | |
11197 | global only in Ada. */ | |
11198 | ||
11199 | static struct using_direct ** | |
804d2729 | 11200 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11201 | { |
c24bdb02 KS |
11202 | if (cu->language == language_ada |
11203 | && cu->get_builder ()->outermost_context_p ()) | |
11204 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 11205 | else |
c24bdb02 | 11206 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
11207 | } |
11208 | ||
27aa8d6a SW |
11209 | /* Read the import statement specified by the given die and record it. */ |
11210 | ||
11211 | static void | |
11212 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11213 | { | |
518817b3 | 11214 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11215 | struct attribute *import_attr; |
32019081 | 11216 | struct die_info *imported_die, *child_die; |
de4affc9 | 11217 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11218 | const char *imported_name; |
794684b6 | 11219 | const char *imported_name_prefix; |
13387711 SW |
11220 | const char *canonical_name; |
11221 | const char *import_alias; | |
11222 | const char *imported_declaration = NULL; | |
794684b6 | 11223 | const char *import_prefix; |
eb1e02fd | 11224 | std::vector<const char *> excludes; |
13387711 | 11225 | |
27aa8d6a SW |
11226 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11227 | if (import_attr == NULL) | |
11228 | { | |
b98664d3 | 11229 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11230 | dwarf_tag_name (die->tag)); |
11231 | return; | |
11232 | } | |
11233 | ||
de4affc9 CC |
11234 | imported_cu = cu; |
11235 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11236 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11237 | if (imported_name == NULL) |
11238 | { | |
11239 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11240 | ||
11241 | The import in the following code: | |
11242 | namespace A | |
11243 | { | |
11244 | typedef int B; | |
11245 | } | |
11246 | ||
11247 | int main () | |
11248 | { | |
11249 | using A::B; | |
11250 | B b; | |
11251 | return b; | |
11252 | } | |
11253 | ||
11254 | ... | |
11255 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11256 | <52> DW_AT_decl_file : 1 | |
11257 | <53> DW_AT_decl_line : 6 | |
11258 | <54> DW_AT_import : <0x75> | |
11259 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11260 | <59> DW_AT_name : B | |
11261 | <5b> DW_AT_decl_file : 1 | |
11262 | <5c> DW_AT_decl_line : 2 | |
11263 | <5d> DW_AT_type : <0x6e> | |
11264 | ... | |
11265 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11266 | <76> DW_AT_byte_size : 4 | |
11267 | <77> DW_AT_encoding : 5 (signed) | |
11268 | ||
11269 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11270 | This case will be ignored until the gcc bug is fixed. */ | |
11271 | return; | |
11272 | } | |
11273 | ||
82856980 SW |
11274 | /* Figure out the local name after import. */ |
11275 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11276 | |
794684b6 SW |
11277 | /* Figure out where the statement is being imported to. */ |
11278 | import_prefix = determine_prefix (die, cu); | |
11279 | ||
11280 | /* Figure out what the scope of the imported die is and prepend it | |
11281 | to the name of the imported die. */ | |
de4affc9 | 11282 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11283 | |
f55ee35c JK |
11284 | if (imported_die->tag != DW_TAG_namespace |
11285 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11286 | { |
13387711 SW |
11287 | imported_declaration = imported_name; |
11288 | canonical_name = imported_name_prefix; | |
794684b6 | 11289 | } |
13387711 | 11290 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11291 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11292 | imported_name_prefix, |
11293 | (cu->language == language_d ? "." : "::"), | |
11294 | imported_name, (char *) NULL); | |
13387711 SW |
11295 | else |
11296 | canonical_name = imported_name; | |
794684b6 | 11297 | |
32019081 JK |
11298 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11299 | for (child_die = die->child; child_die && child_die->tag; | |
11300 | child_die = sibling_die (child_die)) | |
11301 | { | |
11302 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11303 | represented by an imported module entry with an import attribute | |
11304 | referring to the module and owned entries corresponding to those | |
11305 | entities that are renamed as part of being imported. */ | |
11306 | ||
11307 | if (child_die->tag != DW_TAG_imported_declaration) | |
11308 | { | |
b98664d3 | 11309 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11310 | "- DIE at %s [in module %s]"), |
11311 | sect_offset_str (child_die->sect_off), | |
11312 | objfile_name (objfile)); | |
32019081 JK |
11313 | continue; |
11314 | } | |
11315 | ||
11316 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11317 | if (import_attr == NULL) | |
11318 | { | |
b98664d3 | 11319 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11320 | dwarf_tag_name (child_die->tag)); |
11321 | continue; | |
11322 | } | |
11323 | ||
11324 | imported_cu = cu; | |
11325 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11326 | &imported_cu); | |
11327 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11328 | if (imported_name == NULL) | |
11329 | { | |
b98664d3 | 11330 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11331 | "imported name - DIE at %s [in module %s]"), |
11332 | sect_offset_str (child_die->sect_off), | |
11333 | objfile_name (objfile)); | |
32019081 JK |
11334 | continue; |
11335 | } | |
11336 | ||
eb1e02fd | 11337 | excludes.push_back (imported_name); |
32019081 JK |
11338 | |
11339 | process_die (child_die, cu); | |
11340 | } | |
11341 | ||
804d2729 | 11342 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11343 | import_prefix, |
11344 | canonical_name, | |
11345 | import_alias, | |
11346 | imported_declaration, | |
11347 | excludes, | |
11348 | 0, | |
11349 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11350 | } |
11351 | ||
5230b05a WT |
11352 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11353 | types, but gives them a size of zero. Starting with version 14, | |
11354 | ICC is compatible with GCC. */ | |
11355 | ||
9068261f | 11356 | static bool |
5230b05a WT |
11357 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11358 | { | |
11359 | if (!cu->checked_producer) | |
11360 | check_producer (cu); | |
11361 | ||
11362 | return cu->producer_is_icc_lt_14; | |
11363 | } | |
11364 | ||
eb77c9df AB |
11365 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11366 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11367 | which says that void functions should not have a DW_AT_type. */ | |
11368 | ||
11369 | static bool | |
11370 | producer_is_icc (struct dwarf2_cu *cu) | |
11371 | { | |
11372 | if (!cu->checked_producer) | |
11373 | check_producer (cu); | |
11374 | ||
11375 | return cu->producer_is_icc; | |
11376 | } | |
11377 | ||
1b80a9fa JK |
11378 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11379 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11380 | this, it was first present in GCC release 4.3.0. */ | |
11381 | ||
9068261f | 11382 | static bool |
1b80a9fa JK |
11383 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11384 | { | |
11385 | if (!cu->checked_producer) | |
11386 | check_producer (cu); | |
11387 | ||
11388 | return cu->producer_is_gcc_lt_4_3; | |
11389 | } | |
11390 | ||
d721ba37 PA |
11391 | static file_and_directory |
11392 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11393 | { |
d721ba37 PA |
11394 | file_and_directory res; |
11395 | ||
9291a0cd TT |
11396 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11397 | is not a source language identifier. */ | |
d721ba37 PA |
11398 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11399 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11400 | |
d721ba37 PA |
11401 | if (res.comp_dir == NULL |
11402 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11403 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11404 | { |
d721ba37 PA |
11405 | res.comp_dir_storage = ldirname (res.name); |
11406 | if (!res.comp_dir_storage.empty ()) | |
11407 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11408 | } |
d721ba37 | 11409 | if (res.comp_dir != NULL) |
9291a0cd TT |
11410 | { |
11411 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11412 | directory, get rid of it. */ | |
d721ba37 | 11413 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11414 | |
d721ba37 PA |
11415 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11416 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11417 | } |
11418 | ||
d721ba37 PA |
11419 | if (res.name == NULL) |
11420 | res.name = "<unknown>"; | |
11421 | ||
11422 | return res; | |
9291a0cd TT |
11423 | } |
11424 | ||
f4dc4d17 DE |
11425 | /* Handle DW_AT_stmt_list for a compilation unit. |
11426 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11427 | COMP_DIR is the compilation directory. LOWPC is passed to |
11428 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11429 | |
11430 | static void | |
11431 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11432 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11433 | { |
518817b3 SM |
11434 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11435 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11436 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11437 | struct attribute *attr; |
527f3840 JK |
11438 | struct line_header line_header_local; |
11439 | hashval_t line_header_local_hash; | |
527f3840 JK |
11440 | void **slot; |
11441 | int decode_mapping; | |
2ab95328 | 11442 | |
f4dc4d17 DE |
11443 | gdb_assert (! cu->per_cu->is_debug_types); |
11444 | ||
2ab95328 | 11445 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11446 | if (attr == NULL) |
11447 | return; | |
11448 | ||
9c541725 | 11449 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11450 | |
11451 | /* The line header hash table is only created if needed (it exists to | |
11452 | prevent redundant reading of the line table for partial_units). | |
11453 | If we're given a partial_unit, we'll need it. If we're given a | |
11454 | compile_unit, then use the line header hash table if it's already | |
11455 | created, but don't create one just yet. */ | |
11456 | ||
11457 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11458 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11459 | { |
527f3840 JK |
11460 | dwarf2_per_objfile->line_header_hash |
11461 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11462 | line_header_eq_voidp, | |
11463 | free_line_header_voidp, | |
11464 | &objfile->objfile_obstack, | |
11465 | hashtab_obstack_allocate, | |
11466 | dummy_obstack_deallocate); | |
11467 | } | |
2ab95328 | 11468 | |
9c541725 | 11469 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11470 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11471 | line_header_local_hash = line_header_hash (&line_header_local); | |
11472 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11473 | { | |
11474 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11475 | &line_header_local, | |
11476 | line_header_local_hash, NO_INSERT); | |
11477 | ||
11478 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11479 | is not present in *SLOT (since if there is something in *SLOT then | |
11480 | it will be for a partial_unit). */ | |
11481 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11482 | { |
527f3840 | 11483 | gdb_assert (*slot != NULL); |
9a3c8263 | 11484 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11485 | return; |
dee91e82 | 11486 | } |
2ab95328 | 11487 | } |
527f3840 JK |
11488 | |
11489 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11490 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11491 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11492 | if (lh == NULL) | |
527f3840 | 11493 | return; |
4c8aa72d PA |
11494 | |
11495 | cu->line_header = lh.release (); | |
11496 | cu->line_header_die_owner = die; | |
527f3840 JK |
11497 | |
11498 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11499 | slot = NULL; | |
11500 | else | |
11501 | { | |
11502 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11503 | &line_header_local, | |
11504 | line_header_local_hash, INSERT); | |
11505 | gdb_assert (slot != NULL); | |
11506 | } | |
11507 | if (slot != NULL && *slot == NULL) | |
11508 | { | |
11509 | /* This newly decoded line number information unit will be owned | |
11510 | by line_header_hash hash table. */ | |
11511 | *slot = cu->line_header; | |
4c8aa72d | 11512 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11513 | } |
11514 | else | |
11515 | { | |
11516 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11517 | may be already used by multiple CUs. Create only temporary decoded | |
11518 | line_header for this CU - it may happen at most once for each line | |
11519 | number information unit. And if we're not using line_header_hash | |
11520 | then this is what we want as well. */ | |
11521 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11522 | } |
11523 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11524 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11525 | decode_mapping); | |
fff8551c | 11526 | |
2ab95328 TT |
11527 | } |
11528 | ||
95554aad | 11529 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11530 | |
c906108c | 11531 | static void |
e7c27a73 | 11532 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11533 | { |
518817b3 SM |
11534 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11535 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11536 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11537 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11538 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11539 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11540 | struct attribute *attr; | |
c906108c | 11541 | struct die_info *child_die; |
e142c38c | 11542 | CORE_ADDR baseaddr; |
6e70227d | 11543 | |
380618d6 | 11544 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11545 | baseaddr = objfile->text_section_offset (); |
c906108c | 11546 | |
fae299cd | 11547 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11548 | |
11549 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11550 | from finish_block. */ | |
2acceee2 | 11551 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11552 | lowpc = highpc; |
3e29f34a | 11553 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11554 | |
d721ba37 | 11555 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11556 | |
f4b8a18d KW |
11557 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11558 | standardised yet. As a workaround for the language detection we fall | |
11559 | back to the DW_AT_producer string. */ | |
11560 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11561 | cu->language = language_opencl; | |
11562 | ||
3019eac3 DE |
11563 | /* Similar hack for Go. */ |
11564 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11565 | set_cu_language (DW_LANG_Go, cu); | |
11566 | ||
c24bdb02 | 11567 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11568 | |
11569 | /* Decode line number information if present. We do this before | |
11570 | processing child DIEs, so that the line header table is available | |
11571 | for DW_AT_decl_file. */ | |
d721ba37 | 11572 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11573 | |
11574 | /* Process all dies in compilation unit. */ | |
11575 | if (die->child != NULL) | |
11576 | { | |
11577 | child_die = die->child; | |
11578 | while (child_die && child_die->tag) | |
11579 | { | |
11580 | process_die (child_die, cu); | |
11581 | child_die = sibling_die (child_die); | |
11582 | } | |
11583 | } | |
11584 | ||
11585 | /* Decode macro information, if present. Dwarf 2 macro information | |
11586 | refers to information in the line number info statement program | |
11587 | header, so we can only read it if we've read the header | |
11588 | successfully. */ | |
0af92d60 JK |
11589 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11590 | if (attr == NULL) | |
11591 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11592 | if (attr && cu->line_header) |
11593 | { | |
11594 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11595 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11596 | |
43f3e411 | 11597 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11598 | } |
11599 | else | |
11600 | { | |
11601 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11602 | if (attr && cu->line_header) | |
11603 | { | |
11604 | unsigned int macro_offset = DW_UNSND (attr); | |
11605 | ||
43f3e411 | 11606 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11607 | } |
11608 | } | |
3019eac3 DE |
11609 | } |
11610 | ||
c24bdb02 KS |
11611 | void |
11612 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11613 | { |
f4dc4d17 DE |
11614 | struct type_unit_group *tu_group; |
11615 | int first_time; | |
3019eac3 | 11616 | struct attribute *attr; |
9c541725 | 11617 | unsigned int i; |
0186c6a7 | 11618 | struct signatured_type *sig_type; |
3019eac3 | 11619 | |
f4dc4d17 | 11620 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11621 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11622 | |
c24bdb02 | 11623 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11624 | |
f4dc4d17 | 11625 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11626 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11627 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11628 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11629 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11630 | |
11631 | /* If we've already processed this stmt_list there's no real need to | |
11632 | do it again, we could fake it and just recreate the part we need | |
11633 | (file name,index -> symtab mapping). If data shows this optimization | |
11634 | is useful we can do it then. */ | |
43f3e411 | 11635 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11636 | |
11637 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11638 | debug info. */ | |
fff8551c | 11639 | line_header_up lh; |
f4dc4d17 | 11640 | if (attr != NULL) |
3019eac3 | 11641 | { |
9c541725 | 11642 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11643 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11644 | } |
11645 | if (lh == NULL) | |
11646 | { | |
11647 | if (first_time) | |
c24bdb02 | 11648 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11649 | else |
11650 | { | |
11651 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11652 | gdb_assert (m_builder == nullptr); |
804d2729 | 11653 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11654 | m_builder.reset (new struct buildsym_compunit |
11655 | (COMPUNIT_OBJFILE (cust), "", | |
11656 | COMPUNIT_DIRNAME (cust), | |
11657 | compunit_language (cust), | |
11658 | 0, cust)); | |
f4dc4d17 | 11659 | } |
f4dc4d17 | 11660 | return; |
3019eac3 DE |
11661 | } |
11662 | ||
c24bdb02 KS |
11663 | line_header = lh.release (); |
11664 | line_header_die_owner = die; | |
3019eac3 | 11665 | |
f4dc4d17 DE |
11666 | if (first_time) |
11667 | { | |
c24bdb02 | 11668 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11669 | |
1fd60fc0 DE |
11670 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11671 | still initializing it, and our caller (a few levels up) | |
11672 | process_full_type_unit still needs to know if this is the first | |
11673 | time. */ | |
11674 | ||
7ba99d21 | 11675 | tu_group->num_symtabs = line_header->file_names_size (); |
4c8aa72d | 11676 | tu_group->symtabs = XNEWVEC (struct symtab *, |
7ba99d21 | 11677 | line_header->file_names_size ()); |
3019eac3 | 11678 | |
7ba99d21 AT |
11679 | auto &file_names = line_header->file_names (); |
11680 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11681 | { |
7ba99d21 | 11682 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11683 | dwarf2_start_subfile (this, fe.name, |
11684 | fe.include_dir (line_header)); | |
11685 | buildsym_compunit *b = get_builder (); | |
11686 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11687 | { |
4c8aa72d PA |
11688 | /* NOTE: start_subfile will recognize when it's been |
11689 | passed a file it has already seen. So we can't | |
11690 | assume there's a simple mapping from | |
11691 | cu->line_header->file_names to subfiles, plus | |
11692 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11693 | b->get_current_subfile ()->symtab |
11694 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11695 | } |
11696 | ||
c24bdb02 | 11697 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11698 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11699 | } |
11700 | } | |
11701 | else | |
3019eac3 | 11702 | { |
c24bdb02 | 11703 | gdb_assert (m_builder == nullptr); |
804d2729 | 11704 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11705 | m_builder.reset (new struct buildsym_compunit |
11706 | (COMPUNIT_OBJFILE (cust), "", | |
11707 | COMPUNIT_DIRNAME (cust), | |
11708 | compunit_language (cust), | |
11709 | 0, cust)); | |
f4dc4d17 | 11710 | |
7ba99d21 AT |
11711 | auto &file_names = line_header->file_names (); |
11712 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11713 | { |
7ba99d21 | 11714 | file_entry &fe = file_names[i]; |
4c8aa72d | 11715 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11716 | } |
3019eac3 DE |
11717 | } |
11718 | ||
f4dc4d17 DE |
11719 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11720 | so they don't have a "real" (so to speak) symtab anyway. | |
11721 | There is later code that will assign the main symtab to all symbols | |
11722 | that don't have one. We need to handle the case of a symbol with a | |
11723 | missing symtab (DW_AT_decl_file) anyway. */ | |
11724 | } | |
3019eac3 | 11725 | |
f4dc4d17 DE |
11726 | /* Process DW_TAG_type_unit. |
11727 | For TUs we want to skip the first top level sibling if it's not the | |
11728 | actual type being defined by this TU. In this case the first top | |
11729 | level sibling is there to provide context only. */ | |
3019eac3 | 11730 | |
f4dc4d17 DE |
11731 | static void |
11732 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11733 | { | |
11734 | struct die_info *child_die; | |
3019eac3 | 11735 | |
f4dc4d17 DE |
11736 | prepare_one_comp_unit (cu, die, language_minimal); |
11737 | ||
11738 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11739 | We do this before processing child DIEs, so that the line header table | |
11740 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11741 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11742 | |
11743 | if (die->child != NULL) | |
11744 | { | |
11745 | child_die = die->child; | |
11746 | while (child_die && child_die->tag) | |
11747 | { | |
11748 | process_die (child_die, cu); | |
11749 | child_die = sibling_die (child_die); | |
11750 | } | |
11751 | } | |
3019eac3 DE |
11752 | } |
11753 | \f | |
80626a55 DE |
11754 | /* DWO/DWP files. |
11755 | ||
11756 | http://gcc.gnu.org/wiki/DebugFission | |
11757 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11758 | ||
11759 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11760 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11761 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11762 | |
11763 | static hashval_t | |
11764 | hash_dwo_file (const void *item) | |
11765 | { | |
9a3c8263 | 11766 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11767 | hashval_t hash; |
3019eac3 | 11768 | |
a2ce51a0 DE |
11769 | hash = htab_hash_string (dwo_file->dwo_name); |
11770 | if (dwo_file->comp_dir != NULL) | |
11771 | hash += htab_hash_string (dwo_file->comp_dir); | |
11772 | return hash; | |
3019eac3 DE |
11773 | } |
11774 | ||
11775 | static int | |
11776 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11777 | { | |
9a3c8263 SM |
11778 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11779 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11780 | |
a2ce51a0 DE |
11781 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11782 | return 0; | |
11783 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11784 | return lhs->comp_dir == rhs->comp_dir; | |
11785 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11786 | } |
11787 | ||
11788 | /* Allocate a hash table for DWO files. */ | |
11789 | ||
51ac9db5 | 11790 | static htab_up |
ed2dc618 | 11791 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11792 | { |
51ac9db5 SM |
11793 | auto delete_dwo_file = [] (void *item) |
11794 | { | |
11795 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11796 | ||
11797 | delete dwo_file; | |
11798 | }; | |
11799 | ||
11800 | return htab_up (htab_create_alloc_ex (41, | |
11801 | hash_dwo_file, | |
11802 | eq_dwo_file, | |
11803 | delete_dwo_file, | |
11804 | &objfile->objfile_obstack, | |
11805 | hashtab_obstack_allocate, | |
11806 | dummy_obstack_deallocate)); | |
3019eac3 DE |
11807 | } |
11808 | ||
80626a55 DE |
11809 | /* Lookup DWO file DWO_NAME. */ |
11810 | ||
11811 | static void ** | |
ed2dc618 SM |
11812 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11813 | const char *dwo_name, | |
11814 | const char *comp_dir) | |
80626a55 DE |
11815 | { |
11816 | struct dwo_file find_entry; | |
11817 | void **slot; | |
11818 | ||
11819 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11820 | dwarf2_per_objfile->dwo_files |
11821 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 | 11822 | |
0ac5b59e DE |
11823 | find_entry.dwo_name = dwo_name; |
11824 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11825 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11826 | INSERT); | |
80626a55 DE |
11827 | |
11828 | return slot; | |
11829 | } | |
11830 | ||
3019eac3 DE |
11831 | static hashval_t |
11832 | hash_dwo_unit (const void *item) | |
11833 | { | |
9a3c8263 | 11834 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11835 | |
11836 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11837 | return dwo_unit->signature; | |
11838 | } | |
11839 | ||
11840 | static int | |
11841 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11842 | { | |
9a3c8263 SM |
11843 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11844 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11845 | |
11846 | /* The signature is assumed to be unique within the DWO file. | |
11847 | So while object file CU dwo_id's always have the value zero, | |
11848 | that's OK, assuming each object file DWO file has only one CU, | |
11849 | and that's the rule for now. */ | |
11850 | return lhs->signature == rhs->signature; | |
11851 | } | |
11852 | ||
11853 | /* Allocate a hash table for DWO CUs,TUs. | |
11854 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11855 | ||
11856 | static htab_t | |
11857 | allocate_dwo_unit_table (struct objfile *objfile) | |
11858 | { | |
11859 | /* Start out with a pretty small number. | |
11860 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11861 | return htab_create_alloc_ex (3, | |
11862 | hash_dwo_unit, | |
11863 | eq_dwo_unit, | |
11864 | NULL, | |
11865 | &objfile->objfile_obstack, | |
11866 | hashtab_obstack_allocate, | |
11867 | dummy_obstack_deallocate); | |
11868 | } | |
11869 | ||
19c3d4c9 | 11870 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11871 | |
11872 | static void | |
19c3d4c9 DE |
11873 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11874 | const gdb_byte *info_ptr, | |
11875 | struct die_info *comp_unit_die, | |
11876 | int has_children, | |
c0ab21c2 TT |
11877 | struct dwo_file *dwo_file, |
11878 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11879 | { |
11880 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11881 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11882 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11883 | |
a084a2a6 AT |
11884 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11885 | if (!signature.has_value ()) | |
3019eac3 | 11886 | { |
b98664d3 | 11887 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11888 | " its dwo_id [in module %s]"), |
9d8780f0 | 11889 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11890 | return; |
11891 | } | |
11892 | ||
3019eac3 | 11893 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11894 | dwo_unit->signature = *signature; |
8a0459fd | 11895 | dwo_unit->section = section; |
9c541725 | 11896 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11897 | dwo_unit->length = cu->per_cu->length; |
11898 | ||
b4f54984 | 11899 | if (dwarf_read_debug) |
9d8780f0 SM |
11900 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11901 | sect_offset_str (sect_off), | |
9c541725 | 11902 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11903 | } |
11904 | ||
33c5cd75 | 11905 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11906 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11907 | |
33c5cd75 | 11908 | static void |
ed2dc618 | 11909 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
11910 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
11911 | dwarf2_section_info §ion, htab_t &cus_htab) | |
3019eac3 DE |
11912 | { |
11913 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11914 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11915 | |
33c5cd75 DB |
11916 | dwarf2_read_section (objfile, §ion); |
11917 | info_ptr = section.buffer; | |
3019eac3 DE |
11918 | |
11919 | if (info_ptr == NULL) | |
33c5cd75 | 11920 | return; |
3019eac3 | 11921 | |
b4f54984 | 11922 | if (dwarf_read_debug) |
19c3d4c9 DE |
11923 | { |
11924 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11925 | get_section_name (§ion), |
11926 | get_section_file_name (§ion)); | |
19c3d4c9 | 11927 | } |
3019eac3 | 11928 | |
33c5cd75 | 11929 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11930 | while (info_ptr < end_ptr) |
11931 | { | |
11932 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11933 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11934 | struct dwo_unit *dwo_unit; |
11935 | void **slot; | |
11936 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11937 | |
11938 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11939 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11940 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11941 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11942 | per_cu.section = §ion; | |
11943 | ||
c0ab21c2 TT |
11944 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11945 | if (!reader.dummy_p) | |
11946 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
11947 | reader.has_children, &dwo_file, &read_unit); | |
33c5cd75 DB |
11948 | info_ptr += per_cu.length; |
11949 | ||
11950 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11951 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11952 | continue; |
3019eac3 | 11953 | |
33c5cd75 DB |
11954 | if (cus_htab == NULL) |
11955 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11956 | |
33c5cd75 | 11957 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11958 | *dwo_unit = read_unit; |
33c5cd75 DB |
11959 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); |
11960 | gdb_assert (slot != NULL); | |
11961 | if (*slot != NULL) | |
19c3d4c9 | 11962 | { |
33c5cd75 DB |
11963 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11964 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11965 | |
b98664d3 | 11966 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11967 | " the entry at offset %s, signature %s"), |
11968 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11969 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11970 | } |
33c5cd75 | 11971 | *slot = (void *)dwo_unit; |
3019eac3 | 11972 | } |
3019eac3 DE |
11973 | } |
11974 | ||
80626a55 DE |
11975 | /* DWP file .debug_{cu,tu}_index section format: |
11976 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11977 | ||
d2415c6c DE |
11978 | DWP Version 1: |
11979 | ||
80626a55 DE |
11980 | Both index sections have the same format, and serve to map a 64-bit |
11981 | signature to a set of section numbers. Each section begins with a header, | |
11982 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11983 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11984 | aligned at 8-byte boundaries in the file. | |
11985 | ||
d2415c6c DE |
11986 | The index section header consists of: |
11987 | ||
11988 | V, 32 bit version number | |
11989 | -, 32 bits unused | |
11990 | N, 32 bit number of compilation units or type units in the index | |
11991 | M, 32 bit number of slots in the hash table | |
80626a55 | 11992 | |
d2415c6c | 11993 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11994 | |
d2415c6c DE |
11995 | The hash table begins at offset 16 in the section, and consists of an array |
11996 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11997 | order of the application binary). Unused slots in the hash table are 0. | |
11998 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11999 | |
d2415c6c DE |
12000 | The parallel table begins immediately after the hash table |
12001 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12002 | array of 32-bit indexes (using the byte order of the application binary), | |
12003 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12004 | table contains a 32-bit index into the pool of section numbers. For unused | |
12005 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12006 | |
73869dc2 DE |
12007 | The pool of section numbers begins immediately following the hash table |
12008 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12009 | section numbers consists of an array of 32-bit words (using the byte order | |
12010 | of the application binary). Each item in the array is indexed starting | |
12011 | from 0. The hash table entry provides the index of the first section | |
12012 | number in the set. Additional section numbers in the set follow, and the | |
12013 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12014 | ||
12015 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12016 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12017 | be the second entry. Other members of the set may follow in any order. | |
12018 | ||
12019 | --- | |
12020 | ||
12021 | DWP Version 2: | |
12022 | ||
12023 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12024 | and the entries in the index tables are now offsets into these sections. | |
12025 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12026 | section. | |
12027 | ||
12028 | Index Section Contents: | |
12029 | Header | |
12030 | Hash Table of Signatures dwp_hash_table.hash_table | |
12031 | Parallel Table of Indices dwp_hash_table.unit_table | |
12032 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12033 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12034 | ||
12035 | The index section header consists of: | |
12036 | ||
12037 | V, 32 bit version number | |
12038 | L, 32 bit number of columns in the table of section offsets | |
12039 | N, 32 bit number of compilation units or type units in the index | |
12040 | M, 32 bit number of slots in the hash table | |
12041 | ||
12042 | Numbers are recorded using the byte order of the application binary. | |
12043 | ||
12044 | The hash table has the same format as version 1. | |
12045 | The parallel table of indices has the same format as version 1, | |
12046 | except that the entries are origin-1 indices into the table of sections | |
12047 | offsets and the table of section sizes. | |
12048 | ||
12049 | The table of offsets begins immediately following the parallel table | |
12050 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12051 | a two-dimensional array of 32-bit words (using the byte order of the | |
12052 | application binary), with L columns and N+1 rows, in row-major order. | |
12053 | Each row in the array is indexed starting from 0. The first row provides | |
12054 | a key to the remaining rows: each column in this row provides an identifier | |
12055 | for a debug section, and the offsets in the same column of subsequent rows | |
12056 | refer to that section. The section identifiers are: | |
12057 | ||
12058 | DW_SECT_INFO 1 .debug_info.dwo | |
12059 | DW_SECT_TYPES 2 .debug_types.dwo | |
12060 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12061 | DW_SECT_LINE 4 .debug_line.dwo | |
12062 | DW_SECT_LOC 5 .debug_loc.dwo | |
12063 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12064 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12065 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12066 | ||
12067 | The offsets provided by the CU and TU index sections are the base offsets | |
12068 | for the contributions made by each CU or TU to the corresponding section | |
12069 | in the package file. Each CU and TU header contains an abbrev_offset | |
12070 | field, used to find the abbreviations table for that CU or TU within the | |
12071 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12072 | be interpreted as relative to the base offset given in the index section. | |
12073 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12074 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12075 | and offsets into other debug sections obtained from DWARF attributes should | |
12076 | also be interpreted as relative to the corresponding base offset. | |
12077 | ||
12078 | The table of sizes begins immediately following the table of offsets. | |
12079 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12080 | with L columns and N rows, in row-major order. Each row in the array is | |
12081 | indexed starting from 1 (row 0 is shared by the two tables). | |
12082 | ||
12083 | --- | |
12084 | ||
12085 | Hash table lookup is handled the same in version 1 and 2: | |
12086 | ||
12087 | We assume that N and M will not exceed 2^32 - 1. | |
12088 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12089 | ||
d2415c6c DE |
12090 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12091 | in the hash table is located as follows: | |
80626a55 | 12092 | |
d2415c6c DE |
12093 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12094 | the low-order k bits all set to 1. | |
80626a55 | 12095 | |
d2415c6c | 12096 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12097 | |
d2415c6c DE |
12098 | 3) If the hash table entry at index H matches the signature, use that |
12099 | entry. If the hash table entry at index H is unused (all zeroes), | |
12100 | terminate the search: the signature is not present in the table. | |
80626a55 | 12101 | |
d2415c6c | 12102 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12103 | |
d2415c6c | 12104 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12105 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12106 | |
12107 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12108 | .debug_{info,types}.dwo in DWP_FILE. | |
12109 | Returns NULL if there isn't one. | |
12110 | Note: This function processes DWP files only, not DWO files. */ | |
12111 | ||
12112 | static struct dwp_hash_table * | |
ed2dc618 SM |
12113 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12114 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12115 | { |
12116 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12117 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12118 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12119 | struct dwarf2_section_info *index; |
73869dc2 | 12120 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12121 | struct dwp_hash_table *htab; |
12122 | ||
12123 | if (is_debug_types) | |
12124 | index = &dwp_file->sections.tu_index; | |
12125 | else | |
12126 | index = &dwp_file->sections.cu_index; | |
12127 | ||
12128 | if (dwarf2_section_empty_p (index)) | |
12129 | return NULL; | |
12130 | dwarf2_read_section (objfile, index); | |
12131 | ||
12132 | index_ptr = index->buffer; | |
12133 | index_end = index_ptr + index->size; | |
12134 | ||
12135 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12136 | index_ptr += 4; |
12137 | if (version == 2) | |
12138 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12139 | else | |
12140 | nr_columns = 0; | |
12141 | index_ptr += 4; | |
80626a55 DE |
12142 | nr_units = read_4_bytes (dbfd, index_ptr); |
12143 | index_ptr += 4; | |
12144 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12145 | index_ptr += 4; | |
12146 | ||
73869dc2 | 12147 | if (version != 1 && version != 2) |
80626a55 | 12148 | { |
21aa081e | 12149 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12150 | " [in module %s]"), |
21aa081e | 12151 | pulongest (version), dwp_file->name); |
80626a55 DE |
12152 | } |
12153 | if (nr_slots != (nr_slots & -nr_slots)) | |
12154 | { | |
21aa081e | 12155 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12156 | " is not power of 2 [in module %s]"), |
21aa081e | 12157 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12158 | } |
12159 | ||
12160 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12161 | htab->version = version; |
12162 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12163 | htab->nr_units = nr_units; |
12164 | htab->nr_slots = nr_slots; | |
12165 | htab->hash_table = index_ptr; | |
12166 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12167 | |
12168 | /* Exit early if the table is empty. */ | |
12169 | if (nr_slots == 0 || nr_units == 0 | |
12170 | || (version == 2 && nr_columns == 0)) | |
12171 | { | |
12172 | /* All must be zero. */ | |
12173 | if (nr_slots != 0 || nr_units != 0 | |
12174 | || (version == 2 && nr_columns != 0)) | |
12175 | { | |
b98664d3 | 12176 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12177 | " all zero [in modules %s]"), |
12178 | dwp_file->name); | |
12179 | } | |
12180 | return htab; | |
12181 | } | |
12182 | ||
12183 | if (version == 1) | |
12184 | { | |
12185 | htab->section_pool.v1.indices = | |
12186 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12187 | /* It's harder to decide whether the section is too small in v1. | |
12188 | V1 is deprecated anyway so we punt. */ | |
12189 | } | |
12190 | else | |
12191 | { | |
12192 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12193 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12194 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12195 | /* Reverse map for error checking. */ |
12196 | int ids_seen[DW_SECT_MAX + 1]; | |
12197 | int i; | |
12198 | ||
12199 | if (nr_columns < 2) | |
12200 | { | |
12201 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12202 | " in section table [in module %s]"), | |
12203 | dwp_file->name); | |
12204 | } | |
12205 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12206 | { | |
12207 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12208 | " in section table [in module %s]"), | |
12209 | dwp_file->name); | |
12210 | } | |
04fd5eed GB |
12211 | memset (ids, 255, sizeof_ids); |
12212 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12213 | for (i = 0; i < nr_columns; ++i) |
12214 | { | |
12215 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12216 | ||
12217 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12218 | { | |
12219 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12220 | " in section table [in module %s]"), | |
12221 | id, dwp_file->name); | |
12222 | } | |
12223 | if (ids_seen[id] != -1) | |
12224 | { | |
12225 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12226 | " id %d in section table [in module %s]"), | |
12227 | id, dwp_file->name); | |
12228 | } | |
12229 | ids_seen[id] = i; | |
12230 | ids[i] = id; | |
12231 | } | |
12232 | /* Must have exactly one info or types section. */ | |
12233 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12234 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12235 | != 1) | |
12236 | { | |
12237 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12238 | " DWO info/types section [in module %s]"), | |
12239 | dwp_file->name); | |
12240 | } | |
12241 | /* Must have an abbrev section. */ | |
12242 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12243 | { | |
12244 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12245 | " section [in module %s]"), | |
12246 | dwp_file->name); | |
12247 | } | |
12248 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12249 | htab->section_pool.v2.sizes = | |
12250 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12251 | * nr_units * nr_columns); | |
12252 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12253 | * nr_units * nr_columns)) | |
12254 | > index_end) | |
12255 | { | |
12256 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12257 | " [in module %s]"), | |
12258 | dwp_file->name); | |
12259 | } | |
12260 | } | |
80626a55 DE |
12261 | |
12262 | return htab; | |
12263 | } | |
12264 | ||
12265 | /* Update SECTIONS with the data from SECTP. | |
12266 | ||
12267 | This function is like the other "locate" section routines that are | |
12268 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12269 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12270 | |
12271 | The result is non-zero for success, or zero if an error was found. */ | |
12272 | ||
12273 | static int | |
73869dc2 DE |
12274 | locate_v1_virtual_dwo_sections (asection *sectp, |
12275 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12276 | { |
12277 | const struct dwop_section_names *names = &dwop_section_names; | |
12278 | ||
12279 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12280 | { | |
12281 | /* There can be only one. */ | |
049412e3 | 12282 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12283 | return 0; |
049412e3 | 12284 | sections->abbrev.s.section = sectp; |
fd361982 | 12285 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12286 | } |
12287 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12288 | || section_is_p (sectp->name, &names->types_dwo)) | |
12289 | { | |
12290 | /* There can be only one. */ | |
049412e3 | 12291 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12292 | return 0; |
049412e3 | 12293 | sections->info_or_types.s.section = sectp; |
fd361982 | 12294 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12295 | } |
12296 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12297 | { | |
12298 | /* There can be only one. */ | |
049412e3 | 12299 | if (sections->line.s.section != NULL) |
80626a55 | 12300 | return 0; |
049412e3 | 12301 | sections->line.s.section = sectp; |
fd361982 | 12302 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12303 | } |
12304 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12305 | { | |
12306 | /* There can be only one. */ | |
049412e3 | 12307 | if (sections->loc.s.section != NULL) |
80626a55 | 12308 | return 0; |
049412e3 | 12309 | sections->loc.s.section = sectp; |
fd361982 | 12310 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12311 | } |
12312 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12313 | { | |
12314 | /* There can be only one. */ | |
049412e3 | 12315 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12316 | return 0; |
049412e3 | 12317 | sections->macinfo.s.section = sectp; |
fd361982 | 12318 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12319 | } |
12320 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12321 | { | |
12322 | /* There can be only one. */ | |
049412e3 | 12323 | if (sections->macro.s.section != NULL) |
80626a55 | 12324 | return 0; |
049412e3 | 12325 | sections->macro.s.section = sectp; |
fd361982 | 12326 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12327 | } |
12328 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12329 | { | |
12330 | /* There can be only one. */ | |
049412e3 | 12331 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12332 | return 0; |
049412e3 | 12333 | sections->str_offsets.s.section = sectp; |
fd361982 | 12334 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12335 | } |
12336 | else | |
12337 | { | |
12338 | /* No other kind of section is valid. */ | |
12339 | return 0; | |
12340 | } | |
12341 | ||
12342 | return 1; | |
12343 | } | |
12344 | ||
73869dc2 DE |
12345 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12346 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12347 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12348 | This is for DWP version 1 files. */ | |
80626a55 DE |
12349 | |
12350 | static struct dwo_unit * | |
ed2dc618 SM |
12351 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12352 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12353 | uint32_t unit_index, |
12354 | const char *comp_dir, | |
12355 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12356 | { |
12357 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12358 | const struct dwp_hash_table *dwp_htab = |
12359 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12360 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12361 | const char *kind = is_debug_types ? "TU" : "CU"; |
12362 | struct dwo_file *dwo_file; | |
12363 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12364 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12365 | void **dwo_file_slot; |
80626a55 DE |
12366 | int i; |
12367 | ||
73869dc2 DE |
12368 | gdb_assert (dwp_file->version == 1); |
12369 | ||
b4f54984 | 12370 | if (dwarf_read_debug) |
80626a55 | 12371 | { |
73869dc2 | 12372 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12373 | kind, |
73869dc2 | 12374 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12375 | dwp_file->name); |
12376 | } | |
12377 | ||
19ac8c2e | 12378 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12379 | Put a limit on the number of sections we look for so that bad data |
12380 | doesn't cause us to loop forever. */ | |
12381 | ||
73869dc2 | 12382 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12383 | (1 /* .debug_info or .debug_types */ \ |
12384 | + 1 /* .debug_abbrev */ \ | |
12385 | + 1 /* .debug_line */ \ | |
12386 | + 1 /* .debug_loc */ \ | |
12387 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12388 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12389 | + 1 /* trailing zero */) |
12390 | ||
12391 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12392 | |
73869dc2 | 12393 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12394 | { |
12395 | asection *sectp; | |
12396 | uint32_t section_nr = | |
12397 | read_4_bytes (dbfd, | |
73869dc2 DE |
12398 | dwp_htab->section_pool.v1.indices |
12399 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12400 | |
12401 | if (section_nr == 0) | |
12402 | break; | |
12403 | if (section_nr >= dwp_file->num_sections) | |
12404 | { | |
12405 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12406 | " [in module %s]"), | |
12407 | dwp_file->name); | |
12408 | } | |
12409 | ||
12410 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12411 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12412 | { |
12413 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12414 | " [in module %s]"), | |
12415 | dwp_file->name); | |
12416 | } | |
12417 | } | |
12418 | ||
12419 | if (i < 2 | |
a32a8923 DE |
12420 | || dwarf2_section_empty_p (§ions.info_or_types) |
12421 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12422 | { |
12423 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12424 | " [in module %s]"), | |
12425 | dwp_file->name); | |
12426 | } | |
73869dc2 | 12427 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12428 | { |
12429 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12430 | " [in module %s]"), | |
12431 | dwp_file->name); | |
12432 | } | |
12433 | ||
12434 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12435 | have dwo_unit "live" in that. At least for now. | |
12436 | ||
12437 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12438 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12439 | file, we can combine them back into a virtual DWO file to save space |
12440 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12441 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12442 | ||
791afaa2 TT |
12443 | std::string virtual_dwo_name = |
12444 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12445 | get_section_id (§ions.abbrev), | |
12446 | get_section_id (§ions.line), | |
12447 | get_section_id (§ions.loc), | |
12448 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12449 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12450 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12451 | virtual_dwo_name.c_str (), | |
12452 | comp_dir); | |
80626a55 DE |
12453 | /* Create one if necessary. */ |
12454 | if (*dwo_file_slot == NULL) | |
12455 | { | |
b4f54984 | 12456 | if (dwarf_read_debug) |
80626a55 DE |
12457 | { |
12458 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12459 | virtual_dwo_name.c_str ()); |
80626a55 | 12460 | } |
51ac9db5 | 12461 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12462 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12463 | virtual_dwo_name); | |
0ac5b59e | 12464 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12465 | dwo_file->sections.abbrev = sections.abbrev; |
12466 | dwo_file->sections.line = sections.line; | |
12467 | dwo_file->sections.loc = sections.loc; | |
12468 | dwo_file->sections.macinfo = sections.macinfo; | |
12469 | dwo_file->sections.macro = sections.macro; | |
12470 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12471 | /* The "str" section is global to the entire DWP file. */ | |
12472 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12473 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12474 | there's no need to record it in dwo_file. |
12475 | Also, we can't simply record type sections in dwo_file because | |
12476 | we record a pointer into the vector in dwo_unit. As we collect more | |
12477 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12478 | for it, invalidating all copies of pointers into the previous |
12479 | contents. */ | |
80626a55 DE |
12480 | *dwo_file_slot = dwo_file; |
12481 | } | |
12482 | else | |
12483 | { | |
b4f54984 | 12484 | if (dwarf_read_debug) |
80626a55 DE |
12485 | { |
12486 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12487 | virtual_dwo_name.c_str ()); |
80626a55 | 12488 | } |
9a3c8263 | 12489 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12490 | } |
80626a55 DE |
12491 | |
12492 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12493 | dwo_unit->dwo_file = dwo_file; | |
12494 | dwo_unit->signature = signature; | |
8d749320 SM |
12495 | dwo_unit->section = |
12496 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12497 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12498 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12499 | |
12500 | return dwo_unit; | |
12501 | } | |
12502 | ||
73869dc2 DE |
12503 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12504 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12505 | piece within that section used by a TU/CU, return a virtual section | |
12506 | of just that piece. */ | |
12507 | ||
12508 | static struct dwarf2_section_info | |
ed2dc618 SM |
12509 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12510 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12511 | bfd_size_type offset, bfd_size_type size) |
12512 | { | |
12513 | struct dwarf2_section_info result; | |
12514 | asection *sectp; | |
12515 | ||
12516 | gdb_assert (section != NULL); | |
12517 | gdb_assert (!section->is_virtual); | |
12518 | ||
12519 | memset (&result, 0, sizeof (result)); | |
12520 | result.s.containing_section = section; | |
dc4ccb6f | 12521 | result.is_virtual = true; |
73869dc2 DE |
12522 | |
12523 | if (size == 0) | |
12524 | return result; | |
12525 | ||
12526 | sectp = get_section_bfd_section (section); | |
12527 | ||
12528 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12529 | bounds of the real section. This is a pretty-rare event, so just | |
12530 | flag an error (easier) instead of a warning and trying to cope. */ | |
12531 | if (sectp == NULL | |
fd361982 | 12532 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12533 | { |
73869dc2 DE |
12534 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12535 | " in section %s [in module %s]"), | |
fd361982 | 12536 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12537 | objfile_name (dwarf2_per_objfile->objfile)); |
12538 | } | |
12539 | ||
12540 | result.virtual_offset = offset; | |
12541 | result.size = size; | |
12542 | return result; | |
12543 | } | |
12544 | ||
12545 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12546 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12547 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12548 | This is for DWP version 2 files. */ | |
12549 | ||
12550 | static struct dwo_unit * | |
ed2dc618 SM |
12551 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12552 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12553 | uint32_t unit_index, |
12554 | const char *comp_dir, | |
12555 | ULONGEST signature, int is_debug_types) | |
12556 | { | |
12557 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12558 | const struct dwp_hash_table *dwp_htab = | |
12559 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12560 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12561 | const char *kind = is_debug_types ? "TU" : "CU"; |
12562 | struct dwo_file *dwo_file; | |
12563 | struct dwo_unit *dwo_unit; | |
12564 | struct virtual_v2_dwo_sections sections; | |
12565 | void **dwo_file_slot; | |
73869dc2 DE |
12566 | int i; |
12567 | ||
12568 | gdb_assert (dwp_file->version == 2); | |
12569 | ||
b4f54984 | 12570 | if (dwarf_read_debug) |
73869dc2 DE |
12571 | { |
12572 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12573 | kind, | |
12574 | pulongest (unit_index), hex_string (signature), | |
12575 | dwp_file->name); | |
12576 | } | |
12577 | ||
12578 | /* Fetch the section offsets of this DWO unit. */ | |
12579 | ||
12580 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12581 | |
12582 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12583 | { | |
12584 | uint32_t offset = read_4_bytes (dbfd, | |
12585 | dwp_htab->section_pool.v2.offsets | |
12586 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12587 | + i) | |
12588 | * sizeof (uint32_t))); | |
12589 | uint32_t size = read_4_bytes (dbfd, | |
12590 | dwp_htab->section_pool.v2.sizes | |
12591 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12592 | + i) | |
12593 | * sizeof (uint32_t))); | |
12594 | ||
12595 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12596 | { | |
12597 | case DW_SECT_INFO: | |
12598 | case DW_SECT_TYPES: | |
12599 | sections.info_or_types_offset = offset; | |
12600 | sections.info_or_types_size = size; | |
12601 | break; | |
12602 | case DW_SECT_ABBREV: | |
12603 | sections.abbrev_offset = offset; | |
12604 | sections.abbrev_size = size; | |
12605 | break; | |
12606 | case DW_SECT_LINE: | |
12607 | sections.line_offset = offset; | |
12608 | sections.line_size = size; | |
12609 | break; | |
12610 | case DW_SECT_LOC: | |
12611 | sections.loc_offset = offset; | |
12612 | sections.loc_size = size; | |
12613 | break; | |
12614 | case DW_SECT_STR_OFFSETS: | |
12615 | sections.str_offsets_offset = offset; | |
12616 | sections.str_offsets_size = size; | |
12617 | break; | |
12618 | case DW_SECT_MACINFO: | |
12619 | sections.macinfo_offset = offset; | |
12620 | sections.macinfo_size = size; | |
12621 | break; | |
12622 | case DW_SECT_MACRO: | |
12623 | sections.macro_offset = offset; | |
12624 | sections.macro_size = size; | |
12625 | break; | |
12626 | } | |
12627 | } | |
12628 | ||
12629 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12630 | have dwo_unit "live" in that. At least for now. | |
12631 | ||
12632 | The DWP file can be made up of a random collection of CUs and TUs. | |
12633 | However, for each CU + set of TUs that came from the same original DWO | |
12634 | file, we can combine them back into a virtual DWO file to save space | |
12635 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12636 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12637 | ||
791afaa2 TT |
12638 | std::string virtual_dwo_name = |
12639 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12640 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12641 | (long) (sections.line_size ? sections.line_offset : 0), | |
12642 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12643 | (long) (sections.str_offsets_size | |
12644 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12645 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12646 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12647 | virtual_dwo_name.c_str (), | |
12648 | comp_dir); | |
73869dc2 DE |
12649 | /* Create one if necessary. */ |
12650 | if (*dwo_file_slot == NULL) | |
12651 | { | |
b4f54984 | 12652 | if (dwarf_read_debug) |
73869dc2 DE |
12653 | { |
12654 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12655 | virtual_dwo_name.c_str ()); |
73869dc2 | 12656 | } |
51ac9db5 | 12657 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12658 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12659 | virtual_dwo_name); | |
73869dc2 DE |
12660 | dwo_file->comp_dir = comp_dir; |
12661 | dwo_file->sections.abbrev = | |
ed2dc618 | 12662 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12663 | sections.abbrev_offset, sections.abbrev_size); |
12664 | dwo_file->sections.line = | |
ed2dc618 | 12665 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12666 | sections.line_offset, sections.line_size); |
12667 | dwo_file->sections.loc = | |
ed2dc618 | 12668 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12669 | sections.loc_offset, sections.loc_size); |
12670 | dwo_file->sections.macinfo = | |
ed2dc618 | 12671 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12672 | sections.macinfo_offset, sections.macinfo_size); |
12673 | dwo_file->sections.macro = | |
ed2dc618 | 12674 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12675 | sections.macro_offset, sections.macro_size); |
12676 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12677 | create_dwp_v2_section (dwarf2_per_objfile, |
12678 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12679 | sections.str_offsets_offset, |
12680 | sections.str_offsets_size); | |
12681 | /* The "str" section is global to the entire DWP file. */ | |
12682 | dwo_file->sections.str = dwp_file->sections.str; | |
12683 | /* The info or types section is assigned below to dwo_unit, | |
12684 | there's no need to record it in dwo_file. | |
12685 | Also, we can't simply record type sections in dwo_file because | |
12686 | we record a pointer into the vector in dwo_unit. As we collect more | |
12687 | types we'll grow the vector and eventually have to reallocate space | |
12688 | for it, invalidating all copies of pointers into the previous | |
12689 | contents. */ | |
12690 | *dwo_file_slot = dwo_file; | |
12691 | } | |
12692 | else | |
12693 | { | |
b4f54984 | 12694 | if (dwarf_read_debug) |
73869dc2 DE |
12695 | { |
12696 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12697 | virtual_dwo_name.c_str ()); |
73869dc2 | 12698 | } |
9a3c8263 | 12699 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12700 | } |
73869dc2 DE |
12701 | |
12702 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12703 | dwo_unit->dwo_file = dwo_file; | |
12704 | dwo_unit->signature = signature; | |
8d749320 SM |
12705 | dwo_unit->section = |
12706 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12707 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12708 | is_debug_types | |
73869dc2 DE |
12709 | ? &dwp_file->sections.types |
12710 | : &dwp_file->sections.info, | |
12711 | sections.info_or_types_offset, | |
12712 | sections.info_or_types_size); | |
12713 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12714 | ||
12715 | return dwo_unit; | |
12716 | } | |
12717 | ||
57d63ce2 DE |
12718 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12719 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12720 | |
12721 | static struct dwo_unit * | |
ed2dc618 SM |
12722 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12723 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12724 | ULONGEST signature, int is_debug_types) |
80626a55 | 12725 | { |
57d63ce2 DE |
12726 | const struct dwp_hash_table *dwp_htab = |
12727 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12728 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12729 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12730 | uint32_t hash = signature & mask; |
12731 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12732 | unsigned int i; | |
12733 | void **slot; | |
870f88f7 | 12734 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12735 | |
12736 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12737 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12738 | slot = htab_find_slot (is_debug_types |
12739 | ? dwp_file->loaded_tus | |
12740 | : dwp_file->loaded_cus, | |
12741 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12742 | |
12743 | if (*slot != NULL) | |
9a3c8263 | 12744 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12745 | |
12746 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12747 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12748 | { |
12749 | ULONGEST signature_in_table; | |
12750 | ||
12751 | signature_in_table = | |
57d63ce2 | 12752 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12753 | if (signature_in_table == signature) |
12754 | { | |
57d63ce2 DE |
12755 | uint32_t unit_index = |
12756 | read_4_bytes (dbfd, | |
12757 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12758 | |
73869dc2 DE |
12759 | if (dwp_file->version == 1) |
12760 | { | |
ed2dc618 SM |
12761 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12762 | dwp_file, unit_index, | |
73869dc2 DE |
12763 | comp_dir, signature, |
12764 | is_debug_types); | |
12765 | } | |
12766 | else | |
12767 | { | |
ed2dc618 SM |
12768 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12769 | dwp_file, unit_index, | |
73869dc2 DE |
12770 | comp_dir, signature, |
12771 | is_debug_types); | |
12772 | } | |
9a3c8263 | 12773 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12774 | } |
12775 | if (signature_in_table == 0) | |
12776 | return NULL; | |
12777 | hash = (hash + hash2) & mask; | |
12778 | } | |
12779 | ||
12780 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12781 | " [in module %s]"), | |
12782 | dwp_file->name); | |
12783 | } | |
12784 | ||
ab5088bf | 12785 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12786 | Open the file specified by FILE_NAME and hand it off to BFD for |
12787 | preliminary analysis. Return a newly initialized bfd *, which | |
12788 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12789 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12790 | SEARCH_CWD is true if the current directory is to be searched. |
12791 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12792 | If successful, the file is added to the bfd include table of the |
12793 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12794 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12795 | NOTE: This function is derived from symfile_bfd_open. */ |
12796 | ||
192b62ce | 12797 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12798 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12799 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12800 | { |
24b9144d | 12801 | int desc; |
9c02c129 DE |
12802 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12803 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12804 | to debug_file_directory. */ | |
e0cc99a6 | 12805 | const char *search_path; |
9c02c129 DE |
12806 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12807 | ||
e0cc99a6 | 12808 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12809 | if (search_cwd) |
12810 | { | |
12811 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12812 | { |
12813 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12814 | debug_file_directory, | |
12815 | (char *) NULL)); | |
12816 | search_path = search_path_holder.get (); | |
12817 | } | |
6ac97d4c | 12818 | else |
e0cc99a6 | 12819 | search_path = "."; |
6ac97d4c | 12820 | } |
9c02c129 | 12821 | else |
e0cc99a6 | 12822 | search_path = debug_file_directory; |
3019eac3 | 12823 | |
24b9144d | 12824 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12825 | if (is_dwp) |
12826 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12827 | |
12828 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12829 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12830 | O_RDONLY | O_BINARY, &absolute_name); |
12831 | if (desc < 0) | |
12832 | return NULL; | |
12833 | ||
e0cc99a6 TT |
12834 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12835 | gnutarget, desc)); | |
9c02c129 DE |
12836 | if (sym_bfd == NULL) |
12837 | return NULL; | |
192b62ce | 12838 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12839 | |
192b62ce TT |
12840 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12841 | return NULL; | |
3019eac3 | 12842 | |
13aaf454 DE |
12843 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12844 | This is important because things like demangled_names_hash lives in the | |
12845 | objfile's per_bfd space and may have references to things like symbol | |
12846 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12847 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12848 | |
3019eac3 DE |
12849 | return sym_bfd; |
12850 | } | |
12851 | ||
ab5088bf | 12852 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12853 | COMP_DIR is the DW_AT_comp_dir attribute. |
12854 | The result is the bfd handle of the file. | |
12855 | If there is a problem finding or opening the file, return NULL. | |
12856 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12857 | same as symfile_bfd_open. */ | |
12858 | ||
192b62ce | 12859 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12860 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12861 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12862 | { |
80626a55 | 12863 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12864 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12865 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12866 | |
12867 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12868 | ||
12869 | if (comp_dir != NULL) | |
12870 | { | |
43816ebc TT |
12871 | gdb::unique_xmalloc_ptr<char> path_to_try |
12872 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12873 | |
12874 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12875 | search path, which seems useful. */ | |
ed2dc618 | 12876 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12877 | path_to_try.get (), |
ed2dc618 | 12878 | 0 /*is_dwp*/, |
192b62ce | 12879 | 1 /*search_cwd*/)); |
3019eac3 DE |
12880 | if (abfd != NULL) |
12881 | return abfd; | |
12882 | } | |
12883 | ||
12884 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12885 | is a list of paths. */ | |
12886 | ||
12887 | if (*debug_file_directory == '\0') | |
12888 | return NULL; | |
12889 | ||
ed2dc618 SM |
12890 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12891 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12892 | } |
12893 | ||
80626a55 DE |
12894 | /* This function is mapped across the sections and remembers the offset and |
12895 | size of each of the DWO debugging sections we are interested in. */ | |
12896 | ||
12897 | static void | |
12898 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12899 | { | |
9a3c8263 | 12900 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12901 | const struct dwop_section_names *names = &dwop_section_names; |
12902 | ||
12903 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12904 | { | |
049412e3 | 12905 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12906 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12907 | } |
12908 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12909 | { | |
049412e3 | 12910 | dwo_sections->info.s.section = sectp; |
fd361982 | 12911 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12912 | } |
12913 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12914 | { | |
049412e3 | 12915 | dwo_sections->line.s.section = sectp; |
fd361982 | 12916 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12917 | } |
12918 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12919 | { | |
049412e3 | 12920 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12921 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12922 | } |
12923 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12924 | { | |
049412e3 | 12925 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12926 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12927 | } |
12928 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12929 | { | |
049412e3 | 12930 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12931 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12932 | } |
12933 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12934 | { | |
049412e3 | 12935 | dwo_sections->str.s.section = sectp; |
fd361982 | 12936 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12937 | } |
12938 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12939 | { | |
049412e3 | 12940 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12941 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12942 | } |
12943 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12944 | { | |
12945 | struct dwarf2_section_info type_section; | |
12946 | ||
12947 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12948 | type_section.s.section = sectp; |
fd361982 | 12949 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12950 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12951 | } |
12952 | } | |
12953 | ||
ab5088bf | 12954 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12955 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12956 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12957 | |
12958 | static struct dwo_file * | |
0ac5b59e DE |
12959 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12960 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12961 | { |
ed2dc618 | 12962 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12963 | |
fb1eb2f9 | 12964 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12965 | if (dbfd == NULL) |
12966 | { | |
b4f54984 | 12967 | if (dwarf_read_debug) |
80626a55 DE |
12968 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12969 | return NULL; | |
12970 | } | |
263db9a1 | 12971 | |
51ac9db5 | 12972 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12973 | dwo_file->dwo_name = dwo_name; |
12974 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12975 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12976 | |
fb1eb2f9 | 12977 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12978 | &dwo_file->sections); |
3019eac3 | 12979 | |
18a8505e AT |
12980 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12981 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12982 | |
263db9a1 | 12983 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12984 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12985 | |
b4f54984 | 12986 | if (dwarf_read_debug) |
80626a55 DE |
12987 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12988 | ||
263db9a1 | 12989 | return dwo_file.release (); |
3019eac3 DE |
12990 | } |
12991 | ||
80626a55 | 12992 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12993 | size of each of the DWP debugging sections common to version 1 and 2 that |
12994 | we are interested in. */ | |
3019eac3 | 12995 | |
80626a55 | 12996 | static void |
73869dc2 DE |
12997 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12998 | void *dwp_file_ptr) | |
3019eac3 | 12999 | { |
9a3c8263 | 13000 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13001 | const struct dwop_section_names *names = &dwop_section_names; |
13002 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13003 | |
80626a55 | 13004 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13005 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13006 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13007 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13008 | |
80626a55 DE |
13009 | /* Look for specific sections that we need. */ |
13010 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13011 | { | |
049412e3 | 13012 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 13013 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
13014 | } |
13015 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13016 | { | |
049412e3 | 13017 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 13018 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13019 | } |
13020 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13021 | { | |
049412e3 | 13022 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 13023 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13024 | } |
13025 | } | |
3019eac3 | 13026 | |
73869dc2 DE |
13027 | /* This function is mapped across the sections and remembers the offset and |
13028 | size of each of the DWP version 2 debugging sections that we are interested | |
13029 | in. This is split into a separate function because we don't know if we | |
13030 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13031 | ||
13032 | static void | |
13033 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13034 | { | |
9a3c8263 | 13035 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13036 | const struct dwop_section_names *names = &dwop_section_names; |
13037 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13038 | ||
13039 | /* Record the ELF section number for later lookup: this is what the | |
13040 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13041 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13042 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13043 | ||
13044 | /* Look for specific sections that we need. */ | |
13045 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13046 | { | |
049412e3 | 13047 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 13048 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
13049 | } |
13050 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13051 | { | |
049412e3 | 13052 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 13053 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
13054 | } |
13055 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13056 | { | |
049412e3 | 13057 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 13058 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
13059 | } |
13060 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13061 | { | |
049412e3 | 13062 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 13063 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
13064 | } |
13065 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13066 | { | |
049412e3 | 13067 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13068 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13069 | } |
13070 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13071 | { | |
049412e3 | 13072 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13073 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13074 | } |
13075 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13076 | { | |
049412e3 | 13077 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13078 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13079 | } |
13080 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13081 | { | |
049412e3 | 13082 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13083 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13084 | } |
13085 | } | |
13086 | ||
80626a55 | 13087 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13088 | |
80626a55 DE |
13089 | static hashval_t |
13090 | hash_dwp_loaded_cutus (const void *item) | |
13091 | { | |
9a3c8263 | 13092 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13093 | |
80626a55 DE |
13094 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13095 | return dwo_unit->signature; | |
3019eac3 DE |
13096 | } |
13097 | ||
80626a55 | 13098 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13099 | |
80626a55 DE |
13100 | static int |
13101 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13102 | { |
9a3c8263 SM |
13103 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13104 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13105 | |
80626a55 DE |
13106 | return dua->signature == dub->signature; |
13107 | } | |
3019eac3 | 13108 | |
80626a55 | 13109 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13110 | |
80626a55 DE |
13111 | static htab_t |
13112 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13113 | { | |
13114 | return htab_create_alloc_ex (3, | |
13115 | hash_dwp_loaded_cutus, | |
13116 | eq_dwp_loaded_cutus, | |
13117 | NULL, | |
13118 | &objfile->objfile_obstack, | |
13119 | hashtab_obstack_allocate, | |
13120 | dummy_obstack_deallocate); | |
13121 | } | |
3019eac3 | 13122 | |
ab5088bf DE |
13123 | /* Try to open DWP file FILE_NAME. |
13124 | The result is the bfd handle of the file. | |
13125 | If there is a problem finding or opening the file, return NULL. | |
13126 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13127 | same as symfile_bfd_open. */ | |
13128 | ||
192b62ce | 13129 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13130 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13131 | const char *file_name) | |
ab5088bf | 13132 | { |
ed2dc618 SM |
13133 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13134 | 1 /*is_dwp*/, | |
192b62ce | 13135 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13136 | if (abfd != NULL) |
13137 | return abfd; | |
13138 | ||
13139 | /* Work around upstream bug 15652. | |
13140 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13141 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13142 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13143 | of the executable's path may have discarded the needed info. | |
13144 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13145 | .gnu_debuglink, but that doesn't exist yet.] | |
13146 | Strip the directory from FILE_NAME and search again. */ | |
13147 | if (*debug_file_directory != '\0') | |
13148 | { | |
13149 | /* Don't implicitly search the current directory here. | |
13150 | If the user wants to search "." to handle this case, | |
13151 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13152 | return try_open_dwop_file (dwarf2_per_objfile, |
13153 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13154 | 0 /*search_cwd*/); |
13155 | } | |
13156 | ||
13157 | return NULL; | |
ab5088bf DE |
13158 | } |
13159 | ||
80626a55 DE |
13160 | /* Initialize the use of the DWP file for the current objfile. |
13161 | By convention the name of the DWP file is ${objfile}.dwp. | |
13162 | The result is NULL if it can't be found. */ | |
a766d390 | 13163 | |
400174b1 | 13164 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13165 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13166 | { |
13167 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13168 | |
82bf32bc JK |
13169 | /* Try to find first .dwp for the binary file before any symbolic links |
13170 | resolving. */ | |
6c447423 DE |
13171 | |
13172 | /* If the objfile is a debug file, find the name of the real binary | |
13173 | file and get the name of dwp file from there. */ | |
d721ba37 | 13174 | std::string dwp_name; |
6c447423 DE |
13175 | if (objfile->separate_debug_objfile_backlink != NULL) |
13176 | { | |
13177 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13178 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13179 | |
d721ba37 | 13180 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13181 | } |
13182 | else | |
d721ba37 PA |
13183 | dwp_name = objfile->original_name; |
13184 | ||
13185 | dwp_name += ".dwp"; | |
80626a55 | 13186 | |
ed2dc618 | 13187 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13188 | if (dbfd == NULL |
13189 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13190 | { | |
13191 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13192 | dwp_name = objfile_name (objfile); |
13193 | dwp_name += ".dwp"; | |
ed2dc618 | 13194 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13195 | } |
13196 | ||
80626a55 DE |
13197 | if (dbfd == NULL) |
13198 | { | |
b4f54984 | 13199 | if (dwarf_read_debug) |
d721ba37 | 13200 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13201 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13202 | } |
400174b1 TT |
13203 | |
13204 | const char *name = bfd_get_filename (dbfd.get ()); | |
13205 | std::unique_ptr<struct dwp_file> dwp_file | |
13206 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13207 | |
0a0f4c01 | 13208 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
13209 | dwp_file->elf_sections = |
13210 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13211 | dwp_file->num_sections, asection *); | |
13212 | ||
400174b1 TT |
13213 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13214 | dwarf2_locate_common_dwp_sections, | |
13215 | dwp_file.get ()); | |
80626a55 | 13216 | |
400174b1 TT |
13217 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13218 | 0); | |
80626a55 | 13219 | |
400174b1 TT |
13220 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13221 | 1); | |
80626a55 | 13222 | |
73869dc2 | 13223 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13224 | if (dwp_file->cus && dwp_file->tus |
13225 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13226 | { |
13227 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13228 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13229 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13230 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13231 | " TU version %s [in DWP file %s]"), | |
13232 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13233 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13234 | } |
08302ed2 DE |
13235 | |
13236 | if (dwp_file->cus) | |
13237 | dwp_file->version = dwp_file->cus->version; | |
13238 | else if (dwp_file->tus) | |
13239 | dwp_file->version = dwp_file->tus->version; | |
13240 | else | |
13241 | dwp_file->version = 2; | |
73869dc2 DE |
13242 | |
13243 | if (dwp_file->version == 2) | |
400174b1 TT |
13244 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13245 | dwarf2_locate_v2_dwp_sections, | |
13246 | dwp_file.get ()); | |
73869dc2 | 13247 | |
19ac8c2e DE |
13248 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13249 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13250 | |
b4f54984 | 13251 | if (dwarf_read_debug) |
80626a55 DE |
13252 | { |
13253 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13254 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13255 | " %s CUs, %s TUs\n", |
13256 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13257 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13258 | } |
13259 | ||
13260 | return dwp_file; | |
3019eac3 | 13261 | } |
c906108c | 13262 | |
ab5088bf DE |
13263 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13264 | ||
13265 | static struct dwp_file * | |
ed2dc618 | 13266 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13267 | { |
13268 | if (! dwarf2_per_objfile->dwp_checked) | |
13269 | { | |
ed2dc618 SM |
13270 | dwarf2_per_objfile->dwp_file |
13271 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13272 | dwarf2_per_objfile->dwp_checked = 1; |
13273 | } | |
400174b1 | 13274 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13275 | } |
13276 | ||
80626a55 DE |
13277 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13278 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13279 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13280 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13281 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13282 | ||
13283 | This is called, for example, when wanting to read a variable with a | |
13284 | complex location. Therefore we don't want to do file i/o for every call. | |
13285 | Therefore we don't want to look for a DWO file on every call. | |
13286 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13287 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13288 | for a DWO file. | |
13289 | ||
1c658ad5 | 13290 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13291 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13292 | |
3019eac3 | 13293 | static struct dwo_unit * |
80626a55 DE |
13294 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13295 | const char *dwo_name, const char *comp_dir, | |
13296 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13297 | { |
ed2dc618 | 13298 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13299 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13300 | const char *kind = is_debug_types ? "TU" : "CU"; |
13301 | void **dwo_file_slot; | |
3019eac3 | 13302 | struct dwo_file *dwo_file; |
80626a55 | 13303 | struct dwp_file *dwp_file; |
cb1df416 | 13304 | |
6a506a2d DE |
13305 | /* First see if there's a DWP file. |
13306 | If we have a DWP file but didn't find the DWO inside it, don't | |
13307 | look for the original DWO file. It makes gdb behave differently | |
13308 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13309 | |
ed2dc618 | 13310 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13311 | if (dwp_file != NULL) |
cf2c3c16 | 13312 | { |
80626a55 DE |
13313 | const struct dwp_hash_table *dwp_htab = |
13314 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13315 | ||
13316 | if (dwp_htab != NULL) | |
13317 | { | |
13318 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13319 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13320 | signature, is_debug_types); |
80626a55 DE |
13321 | |
13322 | if (dwo_cutu != NULL) | |
13323 | { | |
b4f54984 | 13324 | if (dwarf_read_debug) |
80626a55 DE |
13325 | { |
13326 | fprintf_unfiltered (gdb_stdlog, | |
13327 | "Virtual DWO %s %s found: @%s\n", | |
13328 | kind, hex_string (signature), | |
13329 | host_address_to_string (dwo_cutu)); | |
13330 | } | |
13331 | return dwo_cutu; | |
13332 | } | |
13333 | } | |
13334 | } | |
6a506a2d | 13335 | else |
80626a55 | 13336 | { |
6a506a2d | 13337 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13338 | |
ed2dc618 SM |
13339 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13340 | dwo_name, comp_dir); | |
6a506a2d | 13341 | if (*dwo_file_slot == NULL) |
80626a55 | 13342 | { |
6a506a2d DE |
13343 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13344 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13345 | } |
6a506a2d | 13346 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13347 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13348 | |
6a506a2d | 13349 | if (dwo_file != NULL) |
19c3d4c9 | 13350 | { |
6a506a2d DE |
13351 | struct dwo_unit *dwo_cutu = NULL; |
13352 | ||
13353 | if (is_debug_types && dwo_file->tus) | |
13354 | { | |
13355 | struct dwo_unit find_dwo_cutu; | |
13356 | ||
13357 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13358 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13359 | dwo_cutu |
13360 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13361 | } |
33c5cd75 | 13362 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13363 | { |
33c5cd75 DB |
13364 | struct dwo_unit find_dwo_cutu; |
13365 | ||
13366 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13367 | find_dwo_cutu.signature = signature; | |
13368 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13369 | &find_dwo_cutu); | |
6a506a2d DE |
13370 | } |
13371 | ||
13372 | if (dwo_cutu != NULL) | |
13373 | { | |
b4f54984 | 13374 | if (dwarf_read_debug) |
6a506a2d DE |
13375 | { |
13376 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13377 | kind, dwo_name, hex_string (signature), | |
13378 | host_address_to_string (dwo_cutu)); | |
13379 | } | |
13380 | return dwo_cutu; | |
80626a55 DE |
13381 | } |
13382 | } | |
2e276125 | 13383 | } |
9cdd5dbd | 13384 | |
80626a55 DE |
13385 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13386 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13387 | correctly to find the file. */ | |
13388 | ||
b4f54984 | 13389 | if (dwarf_read_debug) |
80626a55 DE |
13390 | { |
13391 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13392 | kind, dwo_name, hex_string (signature)); | |
13393 | } | |
3019eac3 | 13394 | |
6656a72d DE |
13395 | /* This is a warning and not a complaint because it can be caused by |
13396 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13397 | { |
13398 | /* Print the name of the DWP file if we looked there, helps the user | |
13399 | better diagnose the problem. */ | |
791afaa2 | 13400 | std::string dwp_text; |
43942612 DE |
13401 | |
13402 | if (dwp_file != NULL) | |
791afaa2 TT |
13403 | dwp_text = string_printf (" [in DWP file %s]", |
13404 | lbasename (dwp_file->name)); | |
43942612 | 13405 | |
9d8780f0 | 13406 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13407 | " [in module %s]"), |
13408 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13409 | dwp_text.c_str (), |
43942612 | 13410 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13411 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13412 | } |
3019eac3 | 13413 | return NULL; |
5fb290d7 DJ |
13414 | } |
13415 | ||
80626a55 DE |
13416 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13417 | See lookup_dwo_cutu_unit for details. */ | |
13418 | ||
13419 | static struct dwo_unit * | |
13420 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13421 | const char *dwo_name, const char *comp_dir, | |
13422 | ULONGEST signature) | |
13423 | { | |
13424 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13425 | } | |
13426 | ||
13427 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13428 | See lookup_dwo_cutu_unit for details. */ | |
13429 | ||
13430 | static struct dwo_unit * | |
13431 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13432 | const char *dwo_name, const char *comp_dir) | |
13433 | { | |
13434 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13435 | } | |
13436 | ||
89e63ee4 DE |
13437 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13438 | ||
13439 | static int | |
13440 | queue_and_load_dwo_tu (void **slot, void *info) | |
13441 | { | |
13442 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13443 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13444 | ULONGEST signature = dwo_unit->signature; | |
13445 | struct signatured_type *sig_type = | |
13446 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13447 | ||
13448 | if (sig_type != NULL) | |
13449 | { | |
13450 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13451 | ||
13452 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13453 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13454 | while processing PER_CU. */ | |
13455 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13456 | load_full_type_unit (sig_cu); | |
ae640021 | 13457 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
13458 | } |
13459 | ||
13460 | return 1; | |
13461 | } | |
13462 | ||
13463 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13464 | The DWO may have the only definition of the type, though it may not be | |
13465 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13466 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13467 | ||
13468 | static void | |
13469 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13470 | { | |
13471 | struct dwo_unit *dwo_unit; | |
13472 | struct dwo_file *dwo_file; | |
13473 | ||
13474 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13475 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13476 | gdb_assert (per_cu->cu != NULL); |
13477 | ||
13478 | dwo_unit = per_cu->cu->dwo_unit; | |
13479 | gdb_assert (dwo_unit != NULL); | |
13480 | ||
13481 | dwo_file = dwo_unit->dwo_file; | |
13482 | if (dwo_file->tus != NULL) | |
13483 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13484 | } | |
13485 | ||
3019eac3 | 13486 | /* Read in various DIEs. */ |
348e048f | 13487 | |
d389af10 | 13488 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13489 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13490 | already referenced by DW_AT_abstract_origin from the children of the | |
13491 | current DIE. */ | |
d389af10 JK |
13492 | |
13493 | static void | |
13494 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13495 | { | |
13496 | struct die_info *child_die; | |
791afaa2 | 13497 | sect_offset *offsetp; |
d389af10 JK |
13498 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13499 | struct die_info *origin_die; | |
13500 | /* Iterator of the ORIGIN_DIE children. */ | |
13501 | struct die_info *origin_child_die; | |
d389af10 | 13502 | struct attribute *attr; |
cd02d79d PA |
13503 | struct dwarf2_cu *origin_cu; |
13504 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13505 | |
13506 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13507 | if (!attr) | |
13508 | return; | |
13509 | ||
cd02d79d PA |
13510 | /* Note that following die references may follow to a die in a |
13511 | different cu. */ | |
13512 | ||
13513 | origin_cu = cu; | |
13514 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13515 | ||
13516 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13517 | symbols in. */ | |
13518 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13519 | origin_cu->list_in_scope = cu->list_in_scope; | |
13520 | ||
edb3359d DJ |
13521 | if (die->tag != origin_die->tag |
13522 | && !(die->tag == DW_TAG_inlined_subroutine | |
13523 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13524 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13525 | sect_offset_str (die->sect_off), |
13526 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13527 | |
791afaa2 | 13528 | std::vector<sect_offset> offsets; |
d389af10 | 13529 | |
3ea89b92 PMR |
13530 | for (child_die = die->child; |
13531 | child_die && child_die->tag; | |
13532 | child_die = sibling_die (child_die)) | |
13533 | { | |
13534 | struct die_info *child_origin_die; | |
13535 | struct dwarf2_cu *child_origin_cu; | |
13536 | ||
13537 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13538 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13539 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13540 | present in the abstract instance but not referenced in the concrete | |
13541 | one. */ | |
216f72a1 JK |
13542 | if (child_die->tag == DW_TAG_call_site |
13543 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13544 | continue; |
13545 | ||
c38f313d DJ |
13546 | /* For each CHILD_DIE, find the corresponding child of |
13547 | ORIGIN_DIE. If there is more than one layer of | |
13548 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13549 | but GCC versions at least through 4.4 generate this (GCC PR | |
13550 | 40573). */ | |
3ea89b92 PMR |
13551 | child_origin_die = child_die; |
13552 | child_origin_cu = cu; | |
c38f313d DJ |
13553 | while (1) |
13554 | { | |
cd02d79d PA |
13555 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13556 | child_origin_cu); | |
c38f313d DJ |
13557 | if (attr == NULL) |
13558 | break; | |
cd02d79d PA |
13559 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13560 | &child_origin_cu); | |
c38f313d DJ |
13561 | } |
13562 | ||
d389af10 JK |
13563 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13564 | counterpart may exist. */ | |
c38f313d | 13565 | if (child_origin_die != child_die) |
d389af10 | 13566 | { |
edb3359d DJ |
13567 | if (child_die->tag != child_origin_die->tag |
13568 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13569 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13570 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13571 | "different tags"), |
9d8780f0 SM |
13572 | sect_offset_str (child_die->sect_off), |
13573 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13574 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13575 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13576 | "different parents"), |
9d8780f0 SM |
13577 | sect_offset_str (child_die->sect_off), |
13578 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13579 | else |
791afaa2 | 13580 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13581 | } |
d389af10 | 13582 | } |
791afaa2 TT |
13583 | std::sort (offsets.begin (), offsets.end ()); |
13584 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13585 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13586 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13587 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13588 | "to DIE %s as their abstract origin"), |
13589 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13590 | |
791afaa2 | 13591 | offsetp = offsets.data (); |
d389af10 JK |
13592 | origin_child_die = origin_die->child; |
13593 | while (origin_child_die && origin_child_die->tag) | |
13594 | { | |
13595 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13596 | while (offsetp < offsets_end |
9c541725 | 13597 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13598 | offsetp++; |
b64f50a1 | 13599 | if (offsetp >= offsets_end |
9c541725 | 13600 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13601 | { |
adde2bff DE |
13602 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13603 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13604 | This can happen with mutually referenced abstract_origins. | |
13605 | PR 16581. */ | |
13606 | if (!origin_child_die->in_process) | |
13607 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13608 | } |
13609 | origin_child_die = sibling_die (origin_child_die); | |
13610 | } | |
cd02d79d | 13611 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13612 | |
13613 | if (cu != origin_cu) | |
13614 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13615 | } |
13616 | ||
c906108c | 13617 | static void |
e7c27a73 | 13618 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13619 | { |
518817b3 | 13620 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13621 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13622 | struct context_stack *newobj; |
c906108c SS |
13623 | CORE_ADDR lowpc; |
13624 | CORE_ADDR highpc; | |
13625 | struct die_info *child_die; | |
edb3359d | 13626 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13627 | const char *name; |
e142c38c | 13628 | CORE_ADDR baseaddr; |
801e3a5b | 13629 | struct block *block; |
edb3359d | 13630 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13631 | std::vector<struct symbol *> template_args; |
34eaf542 | 13632 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13633 | |
13634 | if (inlined_func) | |
13635 | { | |
13636 | /* If we do not have call site information, we can't show the | |
13637 | caller of this inlined function. That's too confusing, so | |
13638 | only use the scope for local variables. */ | |
13639 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13640 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13641 | if (call_line == NULL || call_file == NULL) | |
13642 | { | |
13643 | read_lexical_block_scope (die, cu); | |
13644 | return; | |
13645 | } | |
13646 | } | |
c906108c | 13647 | |
b3b3bada | 13648 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13649 | |
94af9270 | 13650 | name = dwarf2_name (die, cu); |
c906108c | 13651 | |
e8d05480 JB |
13652 | /* Ignore functions with missing or empty names. These are actually |
13653 | illegal according to the DWARF standard. */ | |
13654 | if (name == NULL) | |
13655 | { | |
b98664d3 | 13656 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13657 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13658 | return; |
13659 | } | |
13660 | ||
13661 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13662 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13663 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13664 | { |
ae4d0c03 PM |
13665 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13666 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13667 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13668 | "for subprogram DIE at %s"), |
13669 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13670 | return; |
13671 | } | |
c906108c | 13672 | |
3e29f34a MR |
13673 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13674 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13675 | |
34eaf542 TT |
13676 | /* If we have any template arguments, then we must allocate a |
13677 | different sort of symbol. */ | |
13678 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13679 | { | |
13680 | if (child_die->tag == DW_TAG_template_type_param | |
13681 | || child_die->tag == DW_TAG_template_value_param) | |
13682 | { | |
e623cf5d | 13683 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13684 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13685 | break; |
13686 | } | |
13687 | } | |
13688 | ||
c24bdb02 | 13689 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13690 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13691 | (struct symbol *) templ_func); | |
4c2df51b | 13692 | |
81873cc8 | 13693 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13694 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13695 | cu->language); |
13696 | ||
4cecd739 DJ |
13697 | /* If there is a location expression for DW_AT_frame_base, record |
13698 | it. */ | |
e142c38c | 13699 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13700 | if (attr != nullptr) |
fe978cb0 | 13701 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13702 | |
63e43d3a PMR |
13703 | /* If there is a location for the static link, record it. */ |
13704 | newobj->static_link = NULL; | |
13705 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13706 | if (attr != nullptr) |
63e43d3a | 13707 | { |
224c3ddb SM |
13708 | newobj->static_link |
13709 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d AB |
13710 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
13711 | dwarf2_per_cu_addr_type (cu->per_cu)); | |
63e43d3a PMR |
13712 | } |
13713 | ||
c24bdb02 | 13714 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13715 | |
639d11d3 | 13716 | if (die->child != NULL) |
c906108c | 13717 | { |
639d11d3 | 13718 | child_die = die->child; |
c906108c SS |
13719 | while (child_die && child_die->tag) |
13720 | { | |
34eaf542 TT |
13721 | if (child_die->tag == DW_TAG_template_type_param |
13722 | || child_die->tag == DW_TAG_template_value_param) | |
13723 | { | |
13724 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13725 | ||
f1078f66 | 13726 | if (arg != NULL) |
2f4732b0 | 13727 | template_args.push_back (arg); |
34eaf542 TT |
13728 | } |
13729 | else | |
13730 | process_die (child_die, cu); | |
c906108c SS |
13731 | child_die = sibling_die (child_die); |
13732 | } | |
13733 | } | |
13734 | ||
d389af10 JK |
13735 | inherit_abstract_dies (die, cu); |
13736 | ||
4a811a97 UW |
13737 | /* If we have a DW_AT_specification, we might need to import using |
13738 | directives from the context of the specification DIE. See the | |
13739 | comment in determine_prefix. */ | |
13740 | if (cu->language == language_cplus | |
13741 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13742 | { | |
13743 | struct dwarf2_cu *spec_cu = cu; | |
13744 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13745 | ||
13746 | while (spec_die) | |
13747 | { | |
13748 | child_die = spec_die->child; | |
13749 | while (child_die && child_die->tag) | |
13750 | { | |
13751 | if (child_die->tag == DW_TAG_imported_module) | |
13752 | process_die (child_die, spec_cu); | |
13753 | child_die = sibling_die (child_die); | |
13754 | } | |
13755 | ||
13756 | /* In some cases, GCC generates specification DIEs that | |
13757 | themselves contain DW_AT_specification attributes. */ | |
13758 | spec_die = die_specification (spec_die, &spec_cu); | |
13759 | } | |
13760 | } | |
13761 | ||
c24bdb02 | 13762 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13763 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13764 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13765 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13766 | |
df8a16a1 | 13767 | /* For C++, set the block's scope. */ |
45280282 IB |
13768 | if ((cu->language == language_cplus |
13769 | || cu->language == language_fortran | |
c44af4eb TT |
13770 | || cu->language == language_d |
13771 | || cu->language == language_rust) | |
4d4ec4e5 | 13772 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13773 | block_set_scope (block, determine_prefix (die, cu), |
13774 | &objfile->objfile_obstack); | |
df8a16a1 | 13775 | |
801e3a5b JB |
13776 | /* If we have address ranges, record them. */ |
13777 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13778 | |
a60f3166 | 13779 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13780 | |
34eaf542 | 13781 | /* Attach template arguments to function. */ |
2f4732b0 | 13782 | if (!template_args.empty ()) |
34eaf542 TT |
13783 | { |
13784 | gdb_assert (templ_func != NULL); | |
13785 | ||
2f4732b0 | 13786 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13787 | templ_func->template_arguments |
8d749320 SM |
13788 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13789 | templ_func->n_template_arguments); | |
34eaf542 | 13790 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13791 | template_args.data (), |
34eaf542 | 13792 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13793 | |
13794 | /* Make sure that the symtab is set on the new symbols. Even | |
13795 | though they don't appear in this symtab directly, other parts | |
13796 | of gdb assume that symbols do, and this is reasonably | |
13797 | true. */ | |
8634679f | 13798 | for (symbol *sym : template_args) |
3e1d3d8c | 13799 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13800 | } |
13801 | ||
208d8187 JB |
13802 | /* In C++, we can have functions nested inside functions (e.g., when |
13803 | a function declares a class that has methods). This means that | |
13804 | when we finish processing a function scope, we may need to go | |
13805 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13806 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13807 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13808 | |
921e78cf JB |
13809 | /* If we've finished processing a top-level function, subsequent |
13810 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13811 | if (cu->get_builder ()->outermost_context_p ()) |
13812 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13813 | } |
13814 | ||
13815 | /* Process all the DIES contained within a lexical block scope. Start | |
13816 | a new scope, process the dies, and then close the scope. */ | |
13817 | ||
13818 | static void | |
e7c27a73 | 13819 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13820 | { |
518817b3 | 13821 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13822 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13823 | CORE_ADDR lowpc, highpc; |
13824 | struct die_info *child_die; | |
e142c38c DJ |
13825 | CORE_ADDR baseaddr; |
13826 | ||
b3b3bada | 13827 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13828 | |
13829 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13830 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13831 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13832 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13833 | describe ranges. */ |
e385593e JK |
13834 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13835 | { | |
13836 | case PC_BOUNDS_NOT_PRESENT: | |
13837 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13838 | there was no wrapping by that DW_TAG_lexical_block. | |
13839 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13840 | for (child_die = die->child; | |
13841 | child_die != NULL && child_die->tag; | |
13842 | child_die = sibling_die (child_die)) | |
13843 | process_die (child_die, cu); | |
13844 | return; | |
13845 | case PC_BOUNDS_INVALID: | |
13846 | return; | |
13847 | } | |
3e29f34a MR |
13848 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13849 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13850 | |
c24bdb02 | 13851 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13852 | if (die->child != NULL) |
c906108c | 13853 | { |
639d11d3 | 13854 | child_die = die->child; |
c906108c SS |
13855 | while (child_die && child_die->tag) |
13856 | { | |
e7c27a73 | 13857 | process_die (child_die, cu); |
c906108c SS |
13858 | child_die = sibling_die (child_die); |
13859 | } | |
13860 | } | |
3ea89b92 | 13861 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13862 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13863 | |
c24bdb02 KS |
13864 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13865 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13866 | { |
801e3a5b | 13867 | struct block *block |
c24bdb02 | 13868 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13869 | cstk.start_addr, highpc); |
801e3a5b JB |
13870 | |
13871 | /* Note that recording ranges after traversing children, as we | |
13872 | do here, means that recording a parent's ranges entails | |
13873 | walking across all its children's ranges as they appear in | |
13874 | the address map, which is quadratic behavior. | |
13875 | ||
13876 | It would be nicer to record the parent's ranges before | |
13877 | traversing its children, simply overriding whatever you find | |
13878 | there. But since we don't even decide whether to create a | |
13879 | block until after we've traversed its children, that's hard | |
13880 | to do. */ | |
13881 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13882 | } |
c24bdb02 KS |
13883 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13884 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13885 | } |
13886 | ||
216f72a1 | 13887 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13888 | |
13889 | static void | |
13890 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13891 | { | |
518817b3 | 13892 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13893 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13894 | CORE_ADDR pc, baseaddr; | |
13895 | struct attribute *attr; | |
13896 | struct call_site *call_site, call_site_local; | |
13897 | void **slot; | |
13898 | int nparams; | |
13899 | struct die_info *child_die; | |
13900 | ||
b3b3bada | 13901 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13902 | |
216f72a1 JK |
13903 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13904 | if (attr == NULL) | |
13905 | { | |
13906 | /* This was a pre-DWARF-5 GNU extension alias | |
13907 | for DW_AT_call_return_pc. */ | |
13908 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13909 | } | |
96408a79 SA |
13910 | if (!attr) |
13911 | { | |
b98664d3 | 13912 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13913 | "DIE %s [in module %s]"), |
13914 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13915 | return; |
13916 | } | |
31aa7e4e | 13917 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13918 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13919 | |
13920 | if (cu->call_site_htab == NULL) | |
13921 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13922 | NULL, &objfile->objfile_obstack, | |
13923 | hashtab_obstack_allocate, NULL); | |
13924 | call_site_local.pc = pc; | |
13925 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13926 | if (*slot != NULL) | |
13927 | { | |
b98664d3 | 13928 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13929 | "DIE %s [in module %s]"), |
13930 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13931 | objfile_name (objfile)); |
96408a79 SA |
13932 | return; |
13933 | } | |
13934 | ||
13935 | /* Count parameters at the caller. */ | |
13936 | ||
13937 | nparams = 0; | |
13938 | for (child_die = die->child; child_die && child_die->tag; | |
13939 | child_die = sibling_die (child_die)) | |
13940 | { | |
216f72a1 JK |
13941 | if (child_die->tag != DW_TAG_call_site_parameter |
13942 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13943 | { |
b98664d3 | 13944 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13945 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13946 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13947 | objfile_name (objfile)); |
96408a79 SA |
13948 | continue; |
13949 | } | |
13950 | ||
13951 | nparams++; | |
13952 | } | |
13953 | ||
224c3ddb SM |
13954 | call_site |
13955 | = ((struct call_site *) | |
13956 | obstack_alloc (&objfile->objfile_obstack, | |
13957 | sizeof (*call_site) | |
13958 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13959 | *slot = call_site; |
13960 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13961 | call_site->pc = pc; | |
13962 | ||
216f72a1 JK |
13963 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13964 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13965 | { |
13966 | struct die_info *func_die; | |
13967 | ||
13968 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13969 | for (func_die = die->parent; | |
13970 | func_die && func_die->tag != DW_TAG_subprogram | |
13971 | && func_die->tag != DW_TAG_subroutine_type; | |
13972 | func_die = func_die->parent); | |
13973 | ||
216f72a1 JK |
13974 | /* DW_AT_call_all_calls is a superset |
13975 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13976 | if (func_die |
216f72a1 | 13977 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13978 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13979 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13980 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13981 | { | |
13982 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13983 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13984 | both the initial caller containing the real return address PC and | |
13985 | the final callee containing the current PC of a chain of tail | |
13986 | calls do not need to have the tail call list complete. But any | |
13987 | function candidate for a virtual tail call frame searched via | |
13988 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13989 | determined unambiguously. */ | |
13990 | } | |
13991 | else | |
13992 | { | |
13993 | struct type *func_type = NULL; | |
13994 | ||
13995 | if (func_die) | |
13996 | func_type = get_die_type (func_die, cu); | |
13997 | if (func_type != NULL) | |
13998 | { | |
13999 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14000 | ||
14001 | /* Enlist this call site to the function. */ | |
14002 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14003 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14004 | } | |
14005 | else | |
b98664d3 | 14006 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14007 | "DIE %s [in module %s]"), |
14008 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14009 | } |
14010 | } | |
14011 | ||
216f72a1 JK |
14012 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14013 | if (attr == NULL) | |
14014 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14015 | if (attr == NULL) | |
14016 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14017 | if (attr == NULL) |
216f72a1 JK |
14018 | { |
14019 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14020 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14021 | } | |
96408a79 SA |
14022 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14023 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14024 | /* Keep NULL DWARF_BLOCK. */; | |
14025 | else if (attr_form_is_block (attr)) | |
14026 | { | |
14027 | struct dwarf2_locexpr_baton *dlbaton; | |
14028 | ||
8d749320 | 14029 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14030 | dlbaton->data = DW_BLOCK (attr)->data; |
14031 | dlbaton->size = DW_BLOCK (attr)->size; | |
14032 | dlbaton->per_cu = cu->per_cu; | |
14033 | ||
14034 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14035 | } | |
7771576e | 14036 | else if (attr_form_is_ref (attr)) |
96408a79 | 14037 | { |
96408a79 SA |
14038 | struct dwarf2_cu *target_cu = cu; |
14039 | struct die_info *target_die; | |
14040 | ||
ac9ec31b | 14041 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14042 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14043 | if (die_is_declaration (target_die, target_cu)) |
14044 | { | |
7d45c7c3 | 14045 | const char *target_physname; |
9112db09 JK |
14046 | |
14047 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14048 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14049 | if (target_physname == NULL) |
9112db09 | 14050 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14051 | if (target_physname == NULL) |
b98664d3 | 14052 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14053 | "physname, for referencing DIE %s [in module %s]"), |
14054 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14055 | else |
7d455152 | 14056 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14057 | } |
14058 | else | |
14059 | { | |
14060 | CORE_ADDR lowpc; | |
14061 | ||
14062 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14063 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14064 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14065 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14066 | "low pc, for referencing DIE %s [in module %s]"), |
14067 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14068 | else |
3e29f34a MR |
14069 | { |
14070 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14071 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14072 | } | |
96408a79 SA |
14073 | } |
14074 | } | |
14075 | else | |
b98664d3 | 14076 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14077 | "block nor reference, for DIE %s [in module %s]"), |
14078 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14079 | |
14080 | call_site->per_cu = cu->per_cu; | |
14081 | ||
14082 | for (child_die = die->child; | |
14083 | child_die && child_die->tag; | |
14084 | child_die = sibling_die (child_die)) | |
14085 | { | |
96408a79 | 14086 | struct call_site_parameter *parameter; |
1788b2d3 | 14087 | struct attribute *loc, *origin; |
96408a79 | 14088 | |
216f72a1 JK |
14089 | if (child_die->tag != DW_TAG_call_site_parameter |
14090 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14091 | { |
14092 | /* Already printed the complaint above. */ | |
14093 | continue; | |
14094 | } | |
14095 | ||
14096 | gdb_assert (call_site->parameter_count < nparams); | |
14097 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14098 | ||
1788b2d3 JK |
14099 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14100 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14101 | register is contained in DW_AT_call_value. */ |
96408a79 | 14102 | |
24c5c679 | 14103 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14104 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14105 | if (origin == NULL) | |
14106 | { | |
14107 | /* This was a pre-DWARF-5 GNU extension alias | |
14108 | for DW_AT_call_parameter. */ | |
14109 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14110 | } | |
7771576e | 14111 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14112 | { |
1788b2d3 | 14113 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14114 | |
14115 | sect_offset sect_off | |
14116 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14117 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14118 | { |
14119 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14120 | binding can be done only inside one CU. Such referenced DIE | |
14121 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14122 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14123 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14124 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14125 | objfile_name (objfile)); |
d76b7dbc JK |
14126 | continue; |
14127 | } | |
9c541725 PA |
14128 | parameter->u.param_cu_off |
14129 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14130 | } |
14131 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14132 | { |
b98664d3 | 14133 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14134 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14135 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14136 | continue; |
14137 | } | |
24c5c679 | 14138 | else |
96408a79 | 14139 | { |
24c5c679 JK |
14140 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14141 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14142 | if (parameter->u.dwarf_reg != -1) | |
14143 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14144 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14145 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14146 | ¶meter->u.fb_offset)) | |
14147 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14148 | else | |
14149 | { | |
b98664d3 | 14150 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14151 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14152 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14153 | "[in module %s]"), |
9d8780f0 | 14154 | sect_offset_str (child_die->sect_off), |
9c541725 | 14155 | objfile_name (objfile)); |
24c5c679 JK |
14156 | continue; |
14157 | } | |
96408a79 SA |
14158 | } |
14159 | ||
216f72a1 JK |
14160 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14161 | if (attr == NULL) | |
14162 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14163 | if (!attr_form_is_block (attr)) |
14164 | { | |
b98664d3 | 14165 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14166 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14167 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14168 | objfile_name (objfile)); |
96408a79 SA |
14169 | continue; |
14170 | } | |
14171 | parameter->value = DW_BLOCK (attr)->data; | |
14172 | parameter->value_size = DW_BLOCK (attr)->size; | |
14173 | ||
14174 | /* Parameters are not pre-cleared by memset above. */ | |
14175 | parameter->data_value = NULL; | |
14176 | parameter->data_value_size = 0; | |
14177 | call_site->parameter_count++; | |
14178 | ||
216f72a1 JK |
14179 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14180 | if (attr == NULL) | |
14181 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14182 | if (attr != nullptr) |
96408a79 SA |
14183 | { |
14184 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14185 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14186 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14187 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14188 | objfile_name (objfile)); |
96408a79 SA |
14189 | else |
14190 | { | |
14191 | parameter->data_value = DW_BLOCK (attr)->data; | |
14192 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14193 | } | |
14194 | } | |
14195 | } | |
14196 | } | |
14197 | ||
71a3c369 TT |
14198 | /* Helper function for read_variable. If DIE represents a virtual |
14199 | table, then return the type of the concrete object that is | |
14200 | associated with the virtual table. Otherwise, return NULL. */ | |
14201 | ||
14202 | static struct type * | |
14203 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14204 | { | |
14205 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14206 | if (attr == NULL) | |
14207 | return NULL; | |
14208 | ||
14209 | /* Find the type DIE. */ | |
14210 | struct die_info *type_die = NULL; | |
14211 | struct dwarf2_cu *type_cu = cu; | |
14212 | ||
14213 | if (attr_form_is_ref (attr)) | |
14214 | type_die = follow_die_ref (die, attr, &type_cu); | |
14215 | if (type_die == NULL) | |
14216 | return NULL; | |
14217 | ||
14218 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14219 | return NULL; | |
14220 | return die_containing_type (type_die, type_cu); | |
14221 | } | |
14222 | ||
14223 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14224 | ||
14225 | static void | |
14226 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14227 | { | |
14228 | struct rust_vtable_symbol *storage = NULL; | |
14229 | ||
14230 | if (cu->language == language_rust) | |
14231 | { | |
14232 | struct type *containing_type = rust_containing_type (die, cu); | |
14233 | ||
14234 | if (containing_type != NULL) | |
14235 | { | |
518817b3 | 14236 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 14237 | |
468c0cbb | 14238 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
14239 | initialize_objfile_symbol (storage); |
14240 | storage->concrete_type = containing_type; | |
cf724bc9 | 14241 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14242 | } |
14243 | } | |
14244 | ||
e4a62c65 TV |
14245 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14246 | struct attribute *abstract_origin | |
14247 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14248 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14249 | if (res == NULL && loc && abstract_origin) | |
14250 | { | |
14251 | /* We have a variable without a name, but with a location and an abstract | |
14252 | origin. This may be a concrete instance of an abstract variable | |
14253 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14254 | later. */ | |
14255 | struct dwarf2_cu *origin_cu = cu; | |
14256 | struct die_info *origin_die | |
14257 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14258 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 14259 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 14260 | } |
71a3c369 TT |
14261 | } |
14262 | ||
43988095 JK |
14263 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14264 | reading .debug_rnglists. | |
14265 | Callback's type should be: | |
14266 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14267 | Return true if the attributes are present and valid, otherwise, | |
14268 | return false. */ | |
14269 | ||
14270 | template <typename Callback> | |
14271 | static bool | |
14272 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14273 | Callback &&callback) | |
14274 | { | |
ed2dc618 | 14275 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14276 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14277 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14278 | bfd *obfd = objfile->obfd; |
43988095 JK |
14279 | /* Base address selection entry. */ |
14280 | CORE_ADDR base; | |
14281 | int found_base; | |
43988095 | 14282 | const gdb_byte *buffer; |
43988095 JK |
14283 | CORE_ADDR baseaddr; |
14284 | bool overflow = false; | |
14285 | ||
14286 | found_base = cu->base_known; | |
14287 | base = cu->base_address; | |
14288 | ||
14289 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14290 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14291 | { | |
b98664d3 | 14292 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14293 | offset); |
14294 | return false; | |
14295 | } | |
14296 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14297 | ||
b3b3bada | 14298 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14299 | |
14300 | while (1) | |
14301 | { | |
7814882a JK |
14302 | /* Initialize it due to a false compiler warning. */ |
14303 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14304 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14305 | + dwarf2_per_objfile->rnglists.size); | |
14306 | unsigned int bytes_read; | |
14307 | ||
14308 | if (buffer == buf_end) | |
14309 | { | |
14310 | overflow = true; | |
14311 | break; | |
14312 | } | |
14313 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14314 | switch (rlet) | |
14315 | { | |
14316 | case DW_RLE_end_of_list: | |
14317 | break; | |
14318 | case DW_RLE_base_address: | |
14319 | if (buffer + cu->header.addr_size > buf_end) | |
14320 | { | |
14321 | overflow = true; | |
14322 | break; | |
14323 | } | |
14324 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14325 | found_base = 1; | |
14326 | buffer += bytes_read; | |
14327 | break; | |
14328 | case DW_RLE_start_length: | |
14329 | if (buffer + cu->header.addr_size > buf_end) | |
14330 | { | |
14331 | overflow = true; | |
14332 | break; | |
14333 | } | |
14334 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14335 | buffer += bytes_read; | |
14336 | range_end = (range_beginning | |
14337 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14338 | buffer += bytes_read; | |
14339 | if (buffer > buf_end) | |
14340 | { | |
14341 | overflow = true; | |
14342 | break; | |
14343 | } | |
14344 | break; | |
14345 | case DW_RLE_offset_pair: | |
14346 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14347 | buffer += bytes_read; | |
14348 | if (buffer > buf_end) | |
14349 | { | |
14350 | overflow = true; | |
14351 | break; | |
14352 | } | |
14353 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14354 | buffer += bytes_read; | |
14355 | if (buffer > buf_end) | |
14356 | { | |
14357 | overflow = true; | |
14358 | break; | |
14359 | } | |
14360 | break; | |
14361 | case DW_RLE_start_end: | |
14362 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14363 | { | |
14364 | overflow = true; | |
14365 | break; | |
14366 | } | |
14367 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14368 | buffer += bytes_read; | |
14369 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14370 | buffer += bytes_read; | |
14371 | break; | |
14372 | default: | |
b98664d3 | 14373 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14374 | return false; |
14375 | } | |
14376 | if (rlet == DW_RLE_end_of_list || overflow) | |
14377 | break; | |
14378 | if (rlet == DW_RLE_base_address) | |
14379 | continue; | |
14380 | ||
14381 | if (!found_base) | |
14382 | { | |
14383 | /* We have no valid base address for the ranges | |
14384 | data. */ | |
b98664d3 | 14385 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14386 | return false; |
14387 | } | |
14388 | ||
14389 | if (range_beginning > range_end) | |
14390 | { | |
14391 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14392 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14393 | return false; |
14394 | } | |
14395 | ||
14396 | /* Empty range entries have no effect. */ | |
14397 | if (range_beginning == range_end) | |
14398 | continue; | |
14399 | ||
14400 | range_beginning += base; | |
14401 | range_end += base; | |
14402 | ||
14403 | /* A not-uncommon case of bad debug info. | |
14404 | Don't pollute the addrmap with bad data. */ | |
14405 | if (range_beginning + baseaddr == 0 | |
14406 | && !dwarf2_per_objfile->has_section_at_zero) | |
14407 | { | |
b98664d3 | 14408 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14409 | " [in module %s]"), objfile_name (objfile)); |
14410 | continue; | |
14411 | } | |
14412 | ||
14413 | callback (range_beginning, range_end); | |
14414 | } | |
14415 | ||
14416 | if (overflow) | |
14417 | { | |
b98664d3 | 14418 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14419 | "for DW_AT_ranges attribute"), |
14420 | offset); | |
14421 | return false; | |
14422 | } | |
14423 | ||
14424 | return true; | |
14425 | } | |
14426 | ||
14427 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14428 | Callback's type should be: | |
14429 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14430 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14431 | |
43988095 | 14432 | template <typename Callback> |
43039443 | 14433 | static int |
5f46c5a5 | 14434 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14435 | Callback &&callback) |
43039443 | 14436 | { |
ed2dc618 | 14437 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14438 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14439 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14440 | struct comp_unit_head *cu_header = &cu->header; |
14441 | bfd *obfd = objfile->obfd; | |
14442 | unsigned int addr_size = cu_header->addr_size; | |
14443 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14444 | /* Base address selection entry. */ | |
14445 | CORE_ADDR base; | |
14446 | int found_base; | |
14447 | unsigned int dummy; | |
d521ce57 | 14448 | const gdb_byte *buffer; |
ff013f42 | 14449 | CORE_ADDR baseaddr; |
43039443 | 14450 | |
43988095 JK |
14451 | if (cu_header->version >= 5) |
14452 | return dwarf2_rnglists_process (offset, cu, callback); | |
14453 | ||
d00adf39 DE |
14454 | found_base = cu->base_known; |
14455 | base = cu->base_address; | |
43039443 | 14456 | |
be391dca | 14457 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14458 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14459 | { |
b98664d3 | 14460 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14461 | offset); |
14462 | return 0; | |
14463 | } | |
dce234bc | 14464 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14465 | |
b3b3bada | 14466 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14467 | |
43039443 JK |
14468 | while (1) |
14469 | { | |
14470 | CORE_ADDR range_beginning, range_end; | |
14471 | ||
14472 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14473 | buffer += addr_size; | |
14474 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14475 | buffer += addr_size; | |
14476 | offset += 2 * addr_size; | |
14477 | ||
14478 | /* An end of list marker is a pair of zero addresses. */ | |
14479 | if (range_beginning == 0 && range_end == 0) | |
14480 | /* Found the end of list entry. */ | |
14481 | break; | |
14482 | ||
14483 | /* Each base address selection entry is a pair of 2 values. | |
14484 | The first is the largest possible address, the second is | |
14485 | the base address. Check for a base address here. */ | |
14486 | if ((range_beginning & mask) == mask) | |
14487 | { | |
28d2bfb9 AB |
14488 | /* If we found the largest possible address, then we already |
14489 | have the base address in range_end. */ | |
14490 | base = range_end; | |
43039443 JK |
14491 | found_base = 1; |
14492 | continue; | |
14493 | } | |
14494 | ||
14495 | if (!found_base) | |
14496 | { | |
14497 | /* We have no valid base address for the ranges | |
14498 | data. */ | |
b98664d3 | 14499 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14500 | return 0; |
14501 | } | |
14502 | ||
9277c30c UW |
14503 | if (range_beginning > range_end) |
14504 | { | |
14505 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14506 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14507 | return 0; |
14508 | } | |
14509 | ||
14510 | /* Empty range entries have no effect. */ | |
14511 | if (range_beginning == range_end) | |
14512 | continue; | |
14513 | ||
43039443 JK |
14514 | range_beginning += base; |
14515 | range_end += base; | |
14516 | ||
01093045 DE |
14517 | /* A not-uncommon case of bad debug info. |
14518 | Don't pollute the addrmap with bad data. */ | |
14519 | if (range_beginning + baseaddr == 0 | |
14520 | && !dwarf2_per_objfile->has_section_at_zero) | |
14521 | { | |
b98664d3 | 14522 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14523 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14524 | continue; |
14525 | } | |
14526 | ||
5f46c5a5 JK |
14527 | callback (range_beginning, range_end); |
14528 | } | |
14529 | ||
14530 | return 1; | |
14531 | } | |
14532 | ||
14533 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14534 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14535 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14536 | ||
14537 | static int | |
14538 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14539 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14540 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14541 | { |
518817b3 | 14542 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 14543 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 14544 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14545 | int low_set = 0; |
14546 | CORE_ADDR low = 0; | |
14547 | CORE_ADDR high = 0; | |
14548 | int retval; | |
14549 | ||
14550 | retval = dwarf2_ranges_process (offset, cu, | |
14551 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14552 | { | |
9277c30c | 14553 | if (ranges_pst != NULL) |
3e29f34a MR |
14554 | { |
14555 | CORE_ADDR lowpc; | |
14556 | CORE_ADDR highpc; | |
14557 | ||
79748972 TT |
14558 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14559 | range_beginning + baseaddr) | |
14560 | - baseaddr); | |
14561 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14562 | range_end + baseaddr) | |
14563 | - baseaddr); | |
d320c2b5 TT |
14564 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14565 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14566 | } |
ff013f42 | 14567 | |
43039443 JK |
14568 | /* FIXME: This is recording everything as a low-high |
14569 | segment of consecutive addresses. We should have a | |
14570 | data structure for discontiguous block ranges | |
14571 | instead. */ | |
14572 | if (! low_set) | |
14573 | { | |
14574 | low = range_beginning; | |
14575 | high = range_end; | |
14576 | low_set = 1; | |
14577 | } | |
14578 | else | |
14579 | { | |
14580 | if (range_beginning < low) | |
14581 | low = range_beginning; | |
14582 | if (range_end > high) | |
14583 | high = range_end; | |
14584 | } | |
5f46c5a5 JK |
14585 | }); |
14586 | if (!retval) | |
14587 | return 0; | |
43039443 JK |
14588 | |
14589 | if (! low_set) | |
14590 | /* If the first entry is an end-of-list marker, the range | |
14591 | describes an empty scope, i.e. no instructions. */ | |
14592 | return 0; | |
14593 | ||
14594 | if (low_return) | |
14595 | *low_return = low; | |
14596 | if (high_return) | |
14597 | *high_return = high; | |
14598 | return 1; | |
14599 | } | |
14600 | ||
3a2b436a JK |
14601 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14602 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14603 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14604 | |
3a2b436a | 14605 | static enum pc_bounds_kind |
af34e669 | 14606 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14607 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14608 | dwarf2_psymtab *pst) |
c906108c | 14609 | { |
518817b3 SM |
14610 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14611 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14612 | struct attribute *attr; |
91da1414 | 14613 | struct attribute *attr_high; |
af34e669 DJ |
14614 | CORE_ADDR low = 0; |
14615 | CORE_ADDR high = 0; | |
e385593e | 14616 | enum pc_bounds_kind ret; |
c906108c | 14617 | |
91da1414 MW |
14618 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14619 | if (attr_high) | |
af34e669 | 14620 | { |
e142c38c | 14621 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14622 | if (attr != nullptr) |
91da1414 | 14623 | { |
31aa7e4e JB |
14624 | low = attr_value_as_address (attr); |
14625 | high = attr_value_as_address (attr_high); | |
14626 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14627 | high += low; | |
91da1414 | 14628 | } |
af34e669 DJ |
14629 | else |
14630 | /* Found high w/o low attribute. */ | |
e385593e | 14631 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14632 | |
14633 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14634 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14635 | } |
c906108c | 14636 | else |
af34e669 | 14637 | { |
e142c38c | 14638 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14639 | if (attr != NULL) |
14640 | { | |
18a8505e | 14641 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14642 | We take advantage of the fact that DW_AT_ranges does not appear |
14643 | in DW_TAG_compile_unit of DWO files. */ | |
14644 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14645 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14646 | + (need_ranges_base | |
14647 | ? cu->ranges_base | |
14648 | : 0)); | |
2e3cf129 | 14649 | |
af34e669 | 14650 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14651 | .debug_ranges section. */ |
2e3cf129 | 14652 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14653 | return PC_BOUNDS_INVALID; |
43039443 | 14654 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14655 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14656 | } |
e385593e JK |
14657 | else |
14658 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14659 | } |
c906108c | 14660 | |
48fbe735 | 14661 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14662 | if (high <= low) |
e385593e | 14663 | return PC_BOUNDS_INVALID; |
c906108c SS |
14664 | |
14665 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14666 | eliminate duplicate copies of functions and vtables and such. | |
14667 | The linker will arbitrarily choose one and discard the others. | |
14668 | The AT_*_pc values for such functions refer to local labels in | |
14669 | these sections. If the section from that file was discarded, the | |
14670 | labels are not in the output, so the relocs get a value of 0. | |
14671 | If this is a discarded function, mark the pc bounds as invalid, | |
14672 | so that GDB will ignore it. */ | |
72dca2f5 | 14673 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14674 | return PC_BOUNDS_INVALID; |
c906108c SS |
14675 | |
14676 | *lowpc = low; | |
96408a79 SA |
14677 | if (highpc) |
14678 | *highpc = high; | |
af34e669 | 14679 | return ret; |
c906108c SS |
14680 | } |
14681 | ||
b084d499 JB |
14682 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14683 | its low and high PC addresses. Do nothing if these addresses could not | |
14684 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14685 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14686 | ||
14687 | static void | |
14688 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14689 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14690 | struct dwarf2_cu *cu) | |
14691 | { | |
14692 | CORE_ADDR low, high; | |
14693 | struct die_info *child = die->child; | |
14694 | ||
e385593e | 14695 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14696 | { |
325fac50 PA |
14697 | *lowpc = std::min (*lowpc, low); |
14698 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14699 | } |
14700 | ||
14701 | /* If the language does not allow nested subprograms (either inside | |
14702 | subprograms or lexical blocks), we're done. */ | |
14703 | if (cu->language != language_ada) | |
14704 | return; | |
6e70227d | 14705 | |
b084d499 JB |
14706 | /* Check all the children of the given DIE. If it contains nested |
14707 | subprograms, then check their pc bounds. Likewise, we need to | |
14708 | check lexical blocks as well, as they may also contain subprogram | |
14709 | definitions. */ | |
14710 | while (child && child->tag) | |
14711 | { | |
14712 | if (child->tag == DW_TAG_subprogram | |
14713 | || child->tag == DW_TAG_lexical_block) | |
14714 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14715 | child = sibling_die (child); | |
14716 | } | |
14717 | } | |
14718 | ||
fae299cd DC |
14719 | /* Get the low and high pc's represented by the scope DIE, and store |
14720 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14721 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14722 | ||
14723 | static void | |
14724 | get_scope_pc_bounds (struct die_info *die, | |
14725 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14726 | struct dwarf2_cu *cu) | |
14727 | { | |
14728 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14729 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14730 | CORE_ADDR current_low, current_high; | |
14731 | ||
3a2b436a | 14732 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14733 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14734 | { |
14735 | best_low = current_low; | |
14736 | best_high = current_high; | |
14737 | } | |
14738 | else | |
14739 | { | |
14740 | struct die_info *child = die->child; | |
14741 | ||
14742 | while (child && child->tag) | |
14743 | { | |
14744 | switch (child->tag) { | |
14745 | case DW_TAG_subprogram: | |
b084d499 | 14746 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14747 | break; |
14748 | case DW_TAG_namespace: | |
f55ee35c | 14749 | case DW_TAG_module: |
fae299cd DC |
14750 | /* FIXME: carlton/2004-01-16: Should we do this for |
14751 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14752 | that current GCC's always emit the DIEs corresponding | |
14753 | to definitions of methods of classes as children of a | |
14754 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14755 | the DIEs giving the declarations, which could be | |
14756 | anywhere). But I don't see any reason why the | |
14757 | standards says that they have to be there. */ | |
14758 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14759 | ||
14760 | if (current_low != ((CORE_ADDR) -1)) | |
14761 | { | |
325fac50 PA |
14762 | best_low = std::min (best_low, current_low); |
14763 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14764 | } |
14765 | break; | |
14766 | default: | |
0963b4bd | 14767 | /* Ignore. */ |
fae299cd DC |
14768 | break; |
14769 | } | |
14770 | ||
14771 | child = sibling_die (child); | |
14772 | } | |
14773 | } | |
14774 | ||
14775 | *lowpc = best_low; | |
14776 | *highpc = best_high; | |
14777 | } | |
14778 | ||
801e3a5b JB |
14779 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14780 | in DIE. */ | |
380bca97 | 14781 | |
801e3a5b JB |
14782 | static void |
14783 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14784 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14785 | { | |
518817b3 | 14786 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14787 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14788 | struct attribute *attr; |
91da1414 | 14789 | struct attribute *attr_high; |
801e3a5b | 14790 | |
91da1414 MW |
14791 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14792 | if (attr_high) | |
801e3a5b | 14793 | { |
801e3a5b | 14794 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14795 | if (attr != nullptr) |
801e3a5b | 14796 | { |
31aa7e4e JB |
14797 | CORE_ADDR low = attr_value_as_address (attr); |
14798 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14799 | ||
14800 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14801 | high += low; | |
9a619af0 | 14802 | |
3e29f34a MR |
14803 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14804 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14805 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14806 | } |
14807 | } | |
14808 | ||
14809 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14810 | if (attr != nullptr) |
801e3a5b | 14811 | { |
18a8505e | 14812 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14813 | We take advantage of the fact that DW_AT_ranges does not appear |
14814 | in DW_TAG_compile_unit of DWO files. */ | |
14815 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14816 | |
14817 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14818 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14819 | unsigned long offset = (DW_UNSND (attr) |
14820 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14821 | |
2d5f09ec | 14822 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14823 | dwarf2_ranges_process (offset, cu, |
14824 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14825 | { | |
58fdfd2c JK |
14826 | start += baseaddr; |
14827 | end += baseaddr; | |
5f46c5a5 JK |
14828 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14829 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14830 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14831 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14832 | }); |
2d5f09ec KB |
14833 | |
14834 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14835 | } |
14836 | } | |
14837 | ||
685b1105 JK |
14838 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14839 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14840 | |
685b1105 JK |
14841 | static void |
14842 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14843 | { |
38360086 | 14844 | int major, minor; |
60d5a603 JK |
14845 | |
14846 | if (cu->producer == NULL) | |
14847 | { | |
14848 | /* For unknown compilers expect their behavior is DWARF version | |
14849 | compliant. | |
14850 | ||
14851 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14852 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14853 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14854 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14855 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14856 | } |
b1ffba5a | 14857 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14858 | { |
38360086 MW |
14859 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14860 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14861 | } |
5230b05a | 14862 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14863 | { |
14864 | cu->producer_is_icc = true; | |
14865 | cu->producer_is_icc_lt_14 = major < 14; | |
14866 | } | |
c258c396 JD |
14867 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14868 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14869 | else |
14870 | { | |
14871 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14872 | compliant. */ | |
60d5a603 JK |
14873 | } |
14874 | ||
9068261f | 14875 | cu->checked_producer = true; |
685b1105 | 14876 | } |
ba919b58 | 14877 | |
685b1105 JK |
14878 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14879 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14880 | during 4.6.0 experimental. */ | |
14881 | ||
9068261f | 14882 | static bool |
685b1105 JK |
14883 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14884 | { | |
14885 | if (!cu->checked_producer) | |
14886 | check_producer (cu); | |
14887 | ||
14888 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14889 | } |
14890 | ||
c258c396 JD |
14891 | |
14892 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14893 | with incorrect is_stmt attributes. */ | |
14894 | ||
14895 | static bool | |
14896 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14897 | { | |
14898 | if (!cu->checked_producer) | |
14899 | check_producer (cu); | |
14900 | ||
14901 | return cu->producer_is_codewarrior; | |
14902 | } | |
14903 | ||
405feb71 | 14904 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14905 | DW_AT_accessibility. */ |
14906 | ||
14907 | static enum dwarf_access_attribute | |
14908 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14909 | { | |
14910 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14911 | { | |
14912 | /* The default DWARF 2 accessibility for members is public, the default | |
14913 | accessibility for inheritance is private. */ | |
14914 | ||
14915 | if (die->tag != DW_TAG_inheritance) | |
14916 | return DW_ACCESS_public; | |
14917 | else | |
14918 | return DW_ACCESS_private; | |
14919 | } | |
14920 | else | |
14921 | { | |
14922 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14923 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14924 | depends on the container kind. */ | |
14925 | ||
14926 | if (die->parent->tag == DW_TAG_class_type) | |
14927 | return DW_ACCESS_private; | |
14928 | else | |
14929 | return DW_ACCESS_public; | |
14930 | } | |
14931 | } | |
14932 | ||
74ac6d43 TT |
14933 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14934 | offset. If the attribute was not found return 0, otherwise return | |
14935 | 1. If it was found but could not properly be handled, set *OFFSET | |
14936 | to 0. */ | |
14937 | ||
14938 | static int | |
14939 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14940 | LONGEST *offset) | |
14941 | { | |
14942 | struct attribute *attr; | |
14943 | ||
14944 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14945 | if (attr != NULL) | |
14946 | { | |
14947 | *offset = 0; | |
14948 | ||
14949 | /* Note that we do not check for a section offset first here. | |
14950 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14951 | so if we see it, we can assume that a constant form is really | |
14952 | a constant and not a section offset. */ | |
14953 | if (attr_form_is_constant (attr)) | |
14954 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14955 | else if (attr_form_is_section_offset (attr)) | |
14956 | dwarf2_complex_location_expr_complaint (); | |
14957 | else if (attr_form_is_block (attr)) | |
14958 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14959 | else | |
14960 | dwarf2_complex_location_expr_complaint (); | |
14961 | ||
14962 | return 1; | |
14963 | } | |
14964 | ||
14965 | return 0; | |
14966 | } | |
14967 | ||
c906108c SS |
14968 | /* Add an aggregate field to the field list. */ |
14969 | ||
14970 | static void | |
107d2387 | 14971 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14972 | struct dwarf2_cu *cu) |
6e70227d | 14973 | { |
518817b3 | 14974 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14975 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14976 | struct nextfield *new_field; |
14977 | struct attribute *attr; | |
14978 | struct field *fp; | |
15d034d0 | 14979 | const char *fieldname = ""; |
c906108c | 14980 | |
7d0ccb61 DJ |
14981 | if (die->tag == DW_TAG_inheritance) |
14982 | { | |
be2daae6 TT |
14983 | fip->baseclasses.emplace_back (); |
14984 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14985 | } |
14986 | else | |
14987 | { | |
be2daae6 TT |
14988 | fip->fields.emplace_back (); |
14989 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14990 | } |
be2daae6 | 14991 | |
c906108c SS |
14992 | fip->nfields++; |
14993 | ||
e142c38c | 14994 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14995 | if (attr != nullptr) |
c906108c | 14996 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14997 | else |
14998 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14999 | if (new_field->accessibility != DW_ACCESS_public) |
15000 | fip->non_public_fields = 1; | |
60d5a603 | 15001 | |
e142c38c | 15002 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15003 | if (attr != nullptr) |
c906108c | 15004 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
15005 | else |
15006 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15007 | |
15008 | fp = &new_field->field; | |
a9a9bd0f | 15009 | |
e142c38c | 15010 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15011 | { |
74ac6d43 TT |
15012 | LONGEST offset; |
15013 | ||
a9a9bd0f | 15014 | /* Data member other than a C++ static data member. */ |
6e70227d | 15015 | |
c906108c | 15016 | /* Get type of field. */ |
e7c27a73 | 15017 | fp->type = die_type (die, cu); |
c906108c | 15018 | |
d6a843b5 | 15019 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15020 | |
c906108c | 15021 | /* Get bit size of field (zero if none). */ |
e142c38c | 15022 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15023 | if (attr != nullptr) |
c906108c SS |
15024 | { |
15025 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15026 | } | |
15027 | else | |
15028 | { | |
15029 | FIELD_BITSIZE (*fp) = 0; | |
15030 | } | |
15031 | ||
15032 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15033 | if (handle_data_member_location (die, cu, &offset)) |
15034 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15035 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 15036 | if (attr != nullptr) |
c906108c | 15037 | { |
d5a22e77 | 15038 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15039 | { |
15040 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15041 | additional bit offset from the MSB of the containing |
15042 | anonymous object to the MSB of the field. We don't | |
15043 | have to do anything special since we don't need to | |
15044 | know the size of the anonymous object. */ | |
f41f5e61 | 15045 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15046 | } |
15047 | else | |
15048 | { | |
15049 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15050 | MSB of the anonymous object, subtract off the number of |
15051 | bits from the MSB of the field to the MSB of the | |
15052 | object, and then subtract off the number of bits of | |
15053 | the field itself. The result is the bit offset of | |
15054 | the LSB of the field. */ | |
c906108c SS |
15055 | int anonymous_size; |
15056 | int bit_offset = DW_UNSND (attr); | |
15057 | ||
e142c38c | 15058 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15059 | if (attr != nullptr) |
c906108c SS |
15060 | { |
15061 | /* The size of the anonymous object containing | |
15062 | the bit field is explicit, so use the | |
15063 | indicated size (in bytes). */ | |
15064 | anonymous_size = DW_UNSND (attr); | |
15065 | } | |
15066 | else | |
15067 | { | |
15068 | /* The size of the anonymous object containing | |
15069 | the bit field must be inferred from the type | |
15070 | attribute of the data member containing the | |
15071 | bit field. */ | |
15072 | anonymous_size = TYPE_LENGTH (fp->type); | |
15073 | } | |
f41f5e61 PA |
15074 | SET_FIELD_BITPOS (*fp, |
15075 | (FIELD_BITPOS (*fp) | |
15076 | + anonymous_size * bits_per_byte | |
15077 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15078 | } |
15079 | } | |
da5b30da AA |
15080 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15081 | if (attr != NULL) | |
15082 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15083 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15084 | |
15085 | /* Get name of field. */ | |
39cbfefa DJ |
15086 | fieldname = dwarf2_name (die, cu); |
15087 | if (fieldname == NULL) | |
15088 | fieldname = ""; | |
d8151005 DJ |
15089 | |
15090 | /* The name is already allocated along with this objfile, so we don't | |
15091 | need to duplicate it for the type. */ | |
15092 | fp->name = fieldname; | |
c906108c SS |
15093 | |
15094 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15095 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15096 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15097 | { |
d48cc9dd | 15098 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15099 | new_field->accessibility = DW_ACCESS_private; |
15100 | fip->non_public_fields = 1; | |
15101 | } | |
15102 | } | |
a9a9bd0f | 15103 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15104 | { |
a9a9bd0f DC |
15105 | /* C++ static member. */ |
15106 | ||
15107 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15108 | is a declaration, but all versions of G++ as of this writing | |
15109 | (so through at least 3.2.1) incorrectly generate | |
15110 | DW_TAG_variable tags. */ | |
6e70227d | 15111 | |
ff355380 | 15112 | const char *physname; |
c906108c | 15113 | |
a9a9bd0f | 15114 | /* Get name of field. */ |
39cbfefa DJ |
15115 | fieldname = dwarf2_name (die, cu); |
15116 | if (fieldname == NULL) | |
c906108c SS |
15117 | return; |
15118 | ||
254e6b9e | 15119 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15120 | if (attr |
15121 | /* Only create a symbol if this is an external value. | |
15122 | new_symbol checks this and puts the value in the global symbol | |
15123 | table, which we want. If it is not external, new_symbol | |
15124 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15125 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15126 | { |
15127 | /* A static const member, not much different than an enum as far as | |
15128 | we're concerned, except that we can support more types. */ | |
15129 | new_symbol (die, NULL, cu); | |
15130 | } | |
15131 | ||
2df3850c | 15132 | /* Get physical name. */ |
ff355380 | 15133 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15134 | |
d8151005 DJ |
15135 | /* The name is already allocated along with this objfile, so we don't |
15136 | need to duplicate it for the type. */ | |
15137 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15138 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15139 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15140 | } |
15141 | else if (die->tag == DW_TAG_inheritance) | |
15142 | { | |
74ac6d43 | 15143 | LONGEST offset; |
d4b96c9a | 15144 | |
74ac6d43 TT |
15145 | /* C++ base class field. */ |
15146 | if (handle_data_member_location (die, cu, &offset)) | |
15147 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15148 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15149 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15150 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15151 | } |
2ddeaf8a TT |
15152 | else if (die->tag == DW_TAG_variant_part) |
15153 | { | |
15154 | /* process_structure_scope will treat this DIE as a union. */ | |
15155 | process_structure_scope (die, cu); | |
15156 | ||
15157 | /* The variant part is relative to the start of the enclosing | |
15158 | structure. */ | |
15159 | SET_FIELD_BITPOS (*fp, 0); | |
15160 | fp->type = get_die_type (die, cu); | |
15161 | fp->artificial = 1; | |
15162 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15163 | |
15164 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15165 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
15166 | child sizes, being sure to account for the offset at which |
15167 | each child is seen. */ | |
c8c81635 TT |
15168 | if (TYPE_LENGTH (fp->type) == 0) |
15169 | { | |
15170 | unsigned max = 0; | |
15171 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
15172 | { |
15173 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
15174 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
15175 | if (len > max) | |
15176 | max = len; | |
15177 | } | |
c8c81635 TT |
15178 | TYPE_LENGTH (fp->type) = max; |
15179 | } | |
2ddeaf8a TT |
15180 | } |
15181 | else | |
15182 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15183 | } |
15184 | ||
883fd55a KS |
15185 | /* Can the type given by DIE define another type? */ |
15186 | ||
15187 | static bool | |
15188 | type_can_define_types (const struct die_info *die) | |
15189 | { | |
15190 | switch (die->tag) | |
15191 | { | |
15192 | case DW_TAG_typedef: | |
15193 | case DW_TAG_class_type: | |
15194 | case DW_TAG_structure_type: | |
15195 | case DW_TAG_union_type: | |
15196 | case DW_TAG_enumeration_type: | |
15197 | return true; | |
15198 | ||
15199 | default: | |
15200 | return false; | |
15201 | } | |
15202 | } | |
15203 | ||
15204 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15205 | |
15206 | static void | |
883fd55a KS |
15207 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15208 | struct dwarf2_cu *cu) | |
6e70227d | 15209 | { |
be2daae6 TT |
15210 | struct decl_field fp; |
15211 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15212 | |
883fd55a | 15213 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15214 | |
883fd55a | 15215 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15216 | fp.name = dwarf2_name (die, cu); |
15217 | fp.type = read_type_die (die, cu); | |
98751a41 | 15218 | |
c191a687 KS |
15219 | /* Save accessibility. */ |
15220 | enum dwarf_access_attribute accessibility; | |
15221 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15222 | if (attr != NULL) | |
15223 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15224 | else | |
15225 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15226 | switch (accessibility) | |
15227 | { | |
15228 | case DW_ACCESS_public: | |
15229 | /* The assumed value if neither private nor protected. */ | |
15230 | break; | |
15231 | case DW_ACCESS_private: | |
be2daae6 | 15232 | fp.is_private = 1; |
c191a687 KS |
15233 | break; |
15234 | case DW_ACCESS_protected: | |
be2daae6 | 15235 | fp.is_protected = 1; |
c191a687 KS |
15236 | break; |
15237 | default: | |
b98664d3 | 15238 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15239 | } |
15240 | ||
883fd55a | 15241 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15242 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15243 | else |
be2daae6 | 15244 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15245 | } |
15246 | ||
c906108c SS |
15247 | /* Create the vector of fields, and attach it to the type. */ |
15248 | ||
15249 | static void | |
fba45db2 | 15250 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15251 | struct dwarf2_cu *cu) |
c906108c SS |
15252 | { |
15253 | int nfields = fip->nfields; | |
15254 | ||
15255 | /* Record the field count, allocate space for the array of fields, | |
15256 | and create blank accessibility bitfields if necessary. */ | |
15257 | TYPE_NFIELDS (type) = nfields; | |
15258 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15259 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15260 | |
b4ba55a1 | 15261 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15262 | { |
15263 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15264 | ||
15265 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15266 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15267 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15268 | ||
15269 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15270 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15271 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15272 | ||
774b6a14 TT |
15273 | TYPE_FIELD_IGNORE_BITS (type) = |
15274 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15275 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15276 | } |
15277 | ||
15278 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15279 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15280 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15281 | { |
be2daae6 | 15282 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15283 | unsigned char *pointer; |
c906108c SS |
15284 | |
15285 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15286 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15287 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15288 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15289 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15290 | } |
15291 | ||
2ddeaf8a TT |
15292 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15293 | { | |
15294 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15295 | ||
be2daae6 | 15296 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15297 | { |
be2daae6 TT |
15298 | struct nextfield &field = fip->fields[index]; |
15299 | ||
15300 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15301 | di->discriminant_index = index; |
be2daae6 | 15302 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15303 | di->default_index = index; |
15304 | else | |
be2daae6 | 15305 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15306 | } |
15307 | } | |
15308 | ||
be2daae6 TT |
15309 | /* Copy the saved-up fields into the field vector. */ |
15310 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15311 | { |
be2daae6 TT |
15312 | struct nextfield &field |
15313 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15314 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15315 | |
be2daae6 TT |
15316 | TYPE_FIELD (type, i) = field.field; |
15317 | switch (field.accessibility) | |
c906108c | 15318 | { |
c5aa993b | 15319 | case DW_ACCESS_private: |
b4ba55a1 | 15320 | if (cu->language != language_ada) |
be2daae6 | 15321 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15322 | break; |
c906108c | 15323 | |
c5aa993b | 15324 | case DW_ACCESS_protected: |
b4ba55a1 | 15325 | if (cu->language != language_ada) |
be2daae6 | 15326 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15327 | break; |
c906108c | 15328 | |
c5aa993b JM |
15329 | case DW_ACCESS_public: |
15330 | break; | |
c906108c | 15331 | |
c5aa993b JM |
15332 | default: |
15333 | /* Unknown accessibility. Complain and treat it as public. */ | |
15334 | { | |
b98664d3 | 15335 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15336 | field.accessibility); |
c5aa993b JM |
15337 | } |
15338 | break; | |
c906108c | 15339 | } |
be2daae6 | 15340 | if (i < fip->baseclasses.size ()) |
c906108c | 15341 | { |
be2daae6 | 15342 | switch (field.virtuality) |
c906108c | 15343 | { |
c5aa993b JM |
15344 | case DW_VIRTUALITY_virtual: |
15345 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15346 | if (cu->language == language_ada) |
a73c6dcd | 15347 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15348 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15349 | break; |
c906108c SS |
15350 | } |
15351 | } | |
c906108c SS |
15352 | } |
15353 | } | |
15354 | ||
7d27a96d TT |
15355 | /* Return true if this member function is a constructor, false |
15356 | otherwise. */ | |
15357 | ||
15358 | static int | |
15359 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15360 | { | |
15361 | const char *fieldname; | |
fe978cb0 | 15362 | const char *type_name; |
7d27a96d TT |
15363 | int len; |
15364 | ||
15365 | if (die->parent == NULL) | |
15366 | return 0; | |
15367 | ||
15368 | if (die->parent->tag != DW_TAG_structure_type | |
15369 | && die->parent->tag != DW_TAG_union_type | |
15370 | && die->parent->tag != DW_TAG_class_type) | |
15371 | return 0; | |
15372 | ||
15373 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15374 | type_name = dwarf2_name (die->parent, cu); |
15375 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15376 | return 0; |
15377 | ||
15378 | len = strlen (fieldname); | |
fe978cb0 PA |
15379 | return (strncmp (fieldname, type_name, len) == 0 |
15380 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15381 | } |
15382 | ||
e35000a7 TBA |
15383 | /* Check if the given VALUE is a recognized enum |
15384 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15385 | Table 7.24. */ | |
15386 | ||
15387 | static bool | |
15388 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15389 | { | |
15390 | switch (value) | |
15391 | { | |
15392 | case DW_DEFAULTED_no: | |
15393 | case DW_DEFAULTED_in_class: | |
15394 | case DW_DEFAULTED_out_of_class: | |
15395 | return true; | |
15396 | } | |
15397 | ||
3142e908 | 15398 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15399 | return false; |
15400 | } | |
15401 | ||
c906108c SS |
15402 | /* Add a member function to the proper fieldlist. */ |
15403 | ||
15404 | static void | |
107d2387 | 15405 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15406 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15407 | { |
518817b3 | 15408 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15409 | struct attribute *attr; |
c906108c | 15410 | int i; |
be2daae6 | 15411 | struct fnfieldlist *flp = nullptr; |
c906108c | 15412 | struct fn_field *fnp; |
15d034d0 | 15413 | const char *fieldname; |
f792889a | 15414 | struct type *this_type; |
60d5a603 | 15415 | enum dwarf_access_attribute accessibility; |
c906108c | 15416 | |
b4ba55a1 | 15417 | if (cu->language == language_ada) |
a73c6dcd | 15418 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15419 | |
2df3850c | 15420 | /* Get name of member function. */ |
39cbfefa DJ |
15421 | fieldname = dwarf2_name (die, cu); |
15422 | if (fieldname == NULL) | |
2df3850c | 15423 | return; |
c906108c | 15424 | |
c906108c | 15425 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15426 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15427 | { |
27bfe10e | 15428 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15429 | { |
15430 | flp = &fip->fnfieldlists[i]; | |
15431 | break; | |
15432 | } | |
c906108c SS |
15433 | } |
15434 | ||
be2daae6 TT |
15435 | /* Create a new fnfieldlist if necessary. */ |
15436 | if (flp == nullptr) | |
c906108c | 15437 | { |
be2daae6 TT |
15438 | fip->fnfieldlists.emplace_back (); |
15439 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15440 | flp->name = fieldname; |
be2daae6 | 15441 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15442 | } |
15443 | ||
be2daae6 TT |
15444 | /* Create a new member function field and add it to the vector of |
15445 | fnfieldlists. */ | |
15446 | flp->fnfields.emplace_back (); | |
15447 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15448 | |
15449 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15450 | if (cu->language == language_cplus) |
be2daae6 TT |
15451 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15452 | die, cu); | |
3da10d80 KS |
15453 | else |
15454 | { | |
1d06ead6 | 15455 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15456 | fnp->physname = physname ? physname : ""; |
15457 | } | |
15458 | ||
c906108c | 15459 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15460 | this_type = read_type_die (die, cu); |
15461 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15462 | { |
f792889a | 15463 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15464 | |
f792889a | 15465 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15466 | of the method itself (TYPE_CODE_METHOD). */ |
15467 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15468 | TYPE_TARGET_TYPE (this_type), |
15469 | TYPE_FIELDS (this_type), | |
15470 | TYPE_NFIELDS (this_type), | |
15471 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15472 | |
15473 | /* Handle static member functions. | |
c5aa993b | 15474 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15475 | member functions. G++ helps GDB by marking the first |
15476 | parameter for non-static member functions (which is the this | |
15477 | pointer) as artificial. We obtain this information from | |
15478 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15479 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15480 | fnp->voffset = VOFFSET_STATIC; |
15481 | } | |
15482 | else | |
b98664d3 | 15483 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15484 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15485 | |
15486 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15487 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15488 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15489 | |
3e43a32a MS |
15490 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15491 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15492 | |
15493 | /* Get accessibility. */ | |
e142c38c | 15494 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15495 | if (attr != nullptr) |
aead7601 | 15496 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15497 | else |
15498 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15499 | switch (accessibility) | |
c906108c | 15500 | { |
60d5a603 JK |
15501 | case DW_ACCESS_private: |
15502 | fnp->is_private = 1; | |
15503 | break; | |
15504 | case DW_ACCESS_protected: | |
15505 | fnp->is_protected = 1; | |
15506 | break; | |
c906108c SS |
15507 | } |
15508 | ||
b02dede2 | 15509 | /* Check for artificial methods. */ |
e142c38c | 15510 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15511 | if (attr && DW_UNSND (attr) != 0) |
15512 | fnp->is_artificial = 1; | |
15513 | ||
e35000a7 TBA |
15514 | /* Check for defaulted methods. */ |
15515 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15516 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15517 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15518 | ||
15519 | /* Check for deleted methods. */ | |
15520 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15521 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15522 | fnp->is_deleted = 1; | |
15523 | ||
7d27a96d TT |
15524 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15525 | ||
0d564a31 | 15526 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15527 | function. For older versions of GCC, this is an offset in the |
15528 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15529 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15530 | to the object address. */ |
15531 | ||
e142c38c | 15532 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15533 | if (attr != nullptr) |
8e19ed76 | 15534 | { |
aec5aa8b | 15535 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15536 | { |
aec5aa8b TT |
15537 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15538 | { | |
15539 | /* Old-style GCC. */ | |
15540 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15541 | } | |
15542 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15543 | || (DW_BLOCK (attr)->size > 1 | |
15544 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15545 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15546 | { | |
aec5aa8b TT |
15547 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15548 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15549 | dwarf2_complex_location_expr_complaint (); | |
15550 | else | |
15551 | fnp->voffset /= cu->header.addr_size; | |
15552 | fnp->voffset += 2; | |
15553 | } | |
15554 | else | |
15555 | dwarf2_complex_location_expr_complaint (); | |
15556 | ||
15557 | if (!fnp->fcontext) | |
7e993ebf KS |
15558 | { |
15559 | /* If there is no `this' field and no DW_AT_containing_type, | |
15560 | we cannot actually find a base class context for the | |
15561 | vtable! */ | |
15562 | if (TYPE_NFIELDS (this_type) == 0 | |
15563 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15564 | { | |
b98664d3 | 15565 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15566 | "function \"%s\" (offset %s)"), |
15567 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15568 | } |
15569 | else | |
15570 | { | |
15571 | fnp->fcontext | |
15572 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15573 | } | |
15574 | } | |
aec5aa8b | 15575 | } |
3690dd37 | 15576 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15577 | { |
4d3c2250 | 15578 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15579 | } |
15580 | else | |
15581 | { | |
4d3c2250 KB |
15582 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15583 | fieldname); | |
8e19ed76 | 15584 | } |
0d564a31 | 15585 | } |
d48cc9dd DJ |
15586 | else |
15587 | { | |
15588 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15589 | if (attr && DW_UNSND (attr)) | |
15590 | { | |
15591 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15592 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15593 | "but the vtable offset is not specified"), |
9d8780f0 | 15594 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15595 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15596 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15597 | } | |
15598 | } | |
c906108c SS |
15599 | } |
15600 | ||
15601 | /* Create the vector of member function fields, and attach it to the type. */ | |
15602 | ||
15603 | static void | |
fba45db2 | 15604 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15605 | struct dwarf2_cu *cu) |
c906108c | 15606 | { |
b4ba55a1 | 15607 | if (cu->language == language_ada) |
a73c6dcd | 15608 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15609 | |
c906108c SS |
15610 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15611 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15612 | TYPE_ALLOC (type, |
15613 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15614 | |
be2daae6 | 15615 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15616 | { |
be2daae6 | 15617 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15618 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15619 | |
be2daae6 TT |
15620 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15621 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15622 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15623 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15624 | ||
15625 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15626 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15627 | } |
15628 | ||
be2daae6 | 15629 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15630 | } |
15631 | ||
1168df01 JB |
15632 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15633 | language, zero otherwise. */ | |
15634 | static int | |
15635 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15636 | { | |
15637 | static const char vptr[] = "_vptr"; | |
15638 | ||
9c37b5ae TT |
15639 | /* Look for the C++ form of the vtable. */ |
15640 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15641 | return 1; |
15642 | ||
15643 | return 0; | |
15644 | } | |
15645 | ||
c0dd20ea | 15646 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15647 | functions, with the ABI-specified layout. If TYPE describes |
15648 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15649 | |
15650 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15651 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15652 | |
0b92b5bb TT |
15653 | static void |
15654 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15655 | { |
09e2d7c7 | 15656 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15657 | |
15658 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15659 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15660 | return; | |
c0dd20ea DJ |
15661 | |
15662 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15663 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15664 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15665 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15666 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15667 | return; | |
c0dd20ea DJ |
15668 | |
15669 | /* Find the type of the method. */ | |
0b92b5bb | 15670 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15671 | if (pfn_type == NULL |
15672 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15673 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15674 | return; |
c0dd20ea DJ |
15675 | |
15676 | /* Look for the "this" argument. */ | |
15677 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15678 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15679 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15680 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15681 | return; |
c0dd20ea | 15682 | |
09e2d7c7 | 15683 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15684 | new_type = alloc_type (objfile); |
09e2d7c7 | 15685 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15686 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15687 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15688 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15689 | } |
1168df01 | 15690 | |
2b4424c3 TT |
15691 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15692 | appropriate error checking and issuing complaints if there is a | |
15693 | problem. */ | |
15694 | ||
15695 | static ULONGEST | |
15696 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15697 | { | |
15698 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15699 | ||
15700 | if (attr == nullptr) | |
15701 | return 0; | |
15702 | ||
15703 | if (!attr_form_is_constant (attr)) | |
15704 | { | |
b98664d3 | 15705 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15706 | " - DIE at %s [in module %s]"), |
15707 | sect_offset_str (die->sect_off), | |
15708 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15709 | return 0; | |
15710 | } | |
15711 | ||
15712 | ULONGEST align; | |
15713 | if (attr->form == DW_FORM_sdata) | |
15714 | { | |
15715 | LONGEST val = DW_SND (attr); | |
15716 | if (val < 0) | |
15717 | { | |
b98664d3 | 15718 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15719 | " - DIE at %s [in module %s]"), |
15720 | sect_offset_str (die->sect_off), | |
15721 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15722 | return 0; | |
15723 | } | |
15724 | align = val; | |
15725 | } | |
15726 | else | |
15727 | align = DW_UNSND (attr); | |
15728 | ||
15729 | if (align == 0) | |
15730 | { | |
b98664d3 | 15731 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15732 | " - DIE at %s [in module %s]"), |
15733 | sect_offset_str (die->sect_off), | |
15734 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15735 | return 0; | |
15736 | } | |
15737 | if ((align & (align - 1)) != 0) | |
15738 | { | |
b98664d3 | 15739 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15740 | " - DIE at %s [in module %s]"), |
15741 | sect_offset_str (die->sect_off), | |
15742 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15743 | return 0; | |
15744 | } | |
15745 | ||
15746 | return align; | |
15747 | } | |
15748 | ||
15749 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15750 | the alignment for TYPE. */ | |
15751 | ||
15752 | static void | |
15753 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15754 | struct type *type) | |
15755 | { | |
15756 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15757 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15758 | " - DIE at %s [in module %s]"), |
15759 | sect_offset_str (die->sect_off), | |
15760 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15761 | } | |
685b1105 | 15762 | |
e35000a7 TBA |
15763 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15764 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15765 | ||
15766 | static bool | |
15767 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15768 | { | |
15769 | switch (value) | |
15770 | { | |
15771 | case DW_CC_normal: | |
15772 | case DW_CC_pass_by_reference: | |
15773 | case DW_CC_pass_by_value: | |
15774 | return true; | |
15775 | ||
15776 | default: | |
15777 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15778 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15779 | return false; |
15780 | } | |
15781 | } | |
15782 | ||
d0922fcf TBA |
15783 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15784 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15785 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15786 | ||
15787 | static bool | |
15788 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15789 | { | |
15790 | switch (value) | |
15791 | { | |
15792 | case DW_CC_normal: | |
15793 | case DW_CC_program: | |
15794 | case DW_CC_nocall: | |
15795 | return true; | |
15796 | ||
15797 | case DW_CC_GNU_renesas_sh: | |
15798 | case DW_CC_GNU_borland_fastcall_i386: | |
15799 | case DW_CC_GDB_IBM_OpenCL: | |
15800 | return true; | |
15801 | ||
15802 | default: | |
15803 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15804 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15805 | return false; |
15806 | } | |
15807 | } | |
15808 | ||
c906108c | 15809 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15810 | (definition) to create a type for the structure or union. Fill in |
15811 | the type's name and general properties; the members will not be | |
83655187 DE |
15812 | processed until process_structure_scope. A symbol table entry for |
15813 | the type will also not be done until process_structure_scope (assuming | |
15814 | the type has a name). | |
c906108c | 15815 | |
c767944b DJ |
15816 | NOTE: we need to call these functions regardless of whether or not the |
15817 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15818 | structure or union. This gets the type entered into our set of |
83655187 | 15819 | user defined types. */ |
c906108c | 15820 | |
f792889a | 15821 | static struct type * |
134d01f1 | 15822 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15823 | { |
518817b3 | 15824 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15825 | struct type *type; |
15826 | struct attribute *attr; | |
15d034d0 | 15827 | const char *name; |
c906108c | 15828 | |
348e048f DE |
15829 | /* If the definition of this type lives in .debug_types, read that type. |
15830 | Don't follow DW_AT_specification though, that will take us back up | |
15831 | the chain and we want to go down. */ | |
45e58e77 | 15832 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15833 | if (attr != nullptr) |
348e048f | 15834 | { |
ac9ec31b | 15835 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15836 | |
ac9ec31b | 15837 | /* The type's CU may not be the same as CU. |
02142a6c | 15838 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15839 | return set_die_type (die, type, cu); |
15840 | } | |
15841 | ||
c0dd20ea | 15842 | type = alloc_type (objfile); |
c906108c | 15843 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15844 | |
39cbfefa DJ |
15845 | name = dwarf2_name (die, cu); |
15846 | if (name != NULL) | |
c906108c | 15847 | { |
987504bb | 15848 | if (cu->language == language_cplus |
c44af4eb TT |
15849 | || cu->language == language_d |
15850 | || cu->language == language_rust) | |
63d06c5c | 15851 | { |
15d034d0 | 15852 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15853 | |
15854 | /* dwarf2_full_name might have already finished building the DIE's | |
15855 | type. If so, there is no need to continue. */ | |
15856 | if (get_die_type (die, cu) != NULL) | |
15857 | return get_die_type (die, cu); | |
15858 | ||
e86ca25f | 15859 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15860 | } |
15861 | else | |
15862 | { | |
d8151005 DJ |
15863 | /* The name is already allocated along with this objfile, so |
15864 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15865 | TYPE_NAME (type) = name; |
63d06c5c | 15866 | } |
c906108c SS |
15867 | } |
15868 | ||
15869 | if (die->tag == DW_TAG_structure_type) | |
15870 | { | |
15871 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15872 | } | |
15873 | else if (die->tag == DW_TAG_union_type) | |
15874 | { | |
15875 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15876 | } | |
2ddeaf8a TT |
15877 | else if (die->tag == DW_TAG_variant_part) |
15878 | { | |
15879 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15880 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15881 | } | |
c906108c SS |
15882 | else |
15883 | { | |
4753d33b | 15884 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15885 | } |
15886 | ||
0cc2414c TT |
15887 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15888 | TYPE_DECLARED_CLASS (type) = 1; | |
15889 | ||
e35000a7 TBA |
15890 | /* Store the calling convention in the type if it's available in |
15891 | the die. Otherwise the calling convention remains set to | |
15892 | the default value DW_CC_normal. */ | |
15893 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15894 | if (attr != nullptr | |
15895 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15896 | { | |
15897 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15898 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15899 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15900 | } | |
15901 | ||
e142c38c | 15902 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15903 | if (attr != nullptr) |
c906108c | 15904 | { |
155bfbd3 JB |
15905 | if (attr_form_is_constant (attr)) |
15906 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15907 | else | |
15908 | { | |
15909 | /* For the moment, dynamic type sizes are not supported | |
15910 | by GDB's struct type. The actual size is determined | |
15911 | on-demand when resolving the type of a given object, | |
15912 | so set the type's length to zero for now. Otherwise, | |
15913 | we record an expression as the length, and that expression | |
15914 | could lead to a very large value, which could eventually | |
15915 | lead to us trying to allocate that much memory when creating | |
15916 | a value of that type. */ | |
15917 | TYPE_LENGTH (type) = 0; | |
15918 | } | |
c906108c SS |
15919 | } |
15920 | else | |
15921 | { | |
15922 | TYPE_LENGTH (type) = 0; | |
15923 | } | |
15924 | ||
2b4424c3 TT |
15925 | maybe_set_alignment (cu, die, type); |
15926 | ||
5230b05a | 15927 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15928 | { |
5230b05a WT |
15929 | /* ICC<14 does not output the required DW_AT_declaration on |
15930 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15931 | TYPE_STUB (type) = 1; |
685b1105 JK |
15932 | } |
15933 | else | |
15934 | TYPE_STUB_SUPPORTED (type) = 1; | |
15935 | ||
dc718098 | 15936 | if (die_is_declaration (die, cu)) |
876cecd0 | 15937 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15938 | else if (attr == NULL && die->child == NULL |
15939 | && producer_is_realview (cu->producer)) | |
15940 | /* RealView does not output the required DW_AT_declaration | |
15941 | on incomplete types. */ | |
15942 | TYPE_STUB (type) = 1; | |
dc718098 | 15943 | |
c906108c SS |
15944 | /* We need to add the type field to the die immediately so we don't |
15945 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15946 | type within the structure itself. */ |
1c379e20 | 15947 | set_die_type (die, type, cu); |
c906108c | 15948 | |
7e314c57 JK |
15949 | /* set_die_type should be already done. */ |
15950 | set_descriptive_type (type, die, cu); | |
15951 | ||
c767944b DJ |
15952 | return type; |
15953 | } | |
15954 | ||
2ddeaf8a TT |
15955 | /* A helper for process_structure_scope that handles a single member |
15956 | DIE. */ | |
15957 | ||
15958 | static void | |
15959 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15960 | struct field_info *fi, | |
15961 | std::vector<struct symbol *> *template_args, | |
15962 | struct dwarf2_cu *cu) | |
15963 | { | |
15964 | if (child_die->tag == DW_TAG_member | |
15965 | || child_die->tag == DW_TAG_variable | |
15966 | || child_die->tag == DW_TAG_variant_part) | |
15967 | { | |
15968 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15969 | should be a DW_TAG_member that is a declaration, but | |
15970 | all versions of G++ as of this writing (so through at | |
15971 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15972 | tags for them instead. */ | |
15973 | dwarf2_add_field (fi, child_die, cu); | |
15974 | } | |
15975 | else if (child_die->tag == DW_TAG_subprogram) | |
15976 | { | |
15977 | /* Rust doesn't have member functions in the C++ sense. | |
15978 | However, it does emit ordinary functions as children | |
15979 | of a struct DIE. */ | |
15980 | if (cu->language == language_rust) | |
15981 | read_func_scope (child_die, cu); | |
15982 | else | |
15983 | { | |
15984 | /* C++ member function. */ | |
15985 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15986 | } | |
15987 | } | |
15988 | else if (child_die->tag == DW_TAG_inheritance) | |
15989 | { | |
15990 | /* C++ base class field. */ | |
15991 | dwarf2_add_field (fi, child_die, cu); | |
15992 | } | |
15993 | else if (type_can_define_types (child_die)) | |
15994 | dwarf2_add_type_defn (fi, child_die, cu); | |
15995 | else if (child_die->tag == DW_TAG_template_type_param | |
15996 | || child_die->tag == DW_TAG_template_value_param) | |
15997 | { | |
15998 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15999 | ||
16000 | if (arg != NULL) | |
16001 | template_args->push_back (arg); | |
16002 | } | |
16003 | else if (child_die->tag == DW_TAG_variant) | |
16004 | { | |
16005 | /* In a variant we want to get the discriminant and also add a | |
16006 | field for our sole member child. */ | |
16007 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
16008 | ||
bde09ab7 | 16009 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
16010 | variant_child != NULL; |
16011 | variant_child = sibling_die (variant_child)) | |
16012 | { | |
16013 | if (variant_child->tag == DW_TAG_member) | |
16014 | { | |
16015 | handle_struct_member_die (variant_child, type, fi, | |
16016 | template_args, cu); | |
16017 | /* Only handle the one. */ | |
16018 | break; | |
16019 | } | |
16020 | } | |
16021 | ||
16022 | /* We don't handle this but we might as well report it if we see | |
16023 | it. */ | |
16024 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 16025 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
16026 | " - DIE at %s [in module %s]"), |
16027 | sect_offset_str (child_die->sect_off), | |
16028 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16029 | ||
16030 | /* The first field was just added, so we can stash the | |
16031 | discriminant there. */ | |
be2daae6 | 16032 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 16033 | if (discr == NULL) |
be2daae6 | 16034 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 16035 | else |
be2daae6 | 16036 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
16037 | } |
16038 | } | |
16039 | ||
c767944b DJ |
16040 | /* Finish creating a structure or union type, including filling in |
16041 | its members and creating a symbol for it. */ | |
16042 | ||
16043 | static void | |
16044 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16045 | { | |
518817b3 | 16046 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 16047 | struct die_info *child_die; |
c767944b DJ |
16048 | struct type *type; |
16049 | ||
16050 | type = get_die_type (die, cu); | |
16051 | if (type == NULL) | |
16052 | type = read_structure_type (die, cu); | |
16053 | ||
2ddeaf8a TT |
16054 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16055 | read the discriminant member, so we can record it later in the | |
16056 | discriminant_info. */ | |
16057 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 16058 | sect_offset discr_offset {}; |
3e1d3d8c | 16059 | bool has_template_parameters = false; |
2ddeaf8a TT |
16060 | |
16061 | if (is_variant_part) | |
16062 | { | |
16063 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16064 | if (discr == NULL) | |
16065 | { | |
16066 | /* Maybe it's a univariant form, an extension we support. | |
16067 | In this case arrange not to check the offset. */ | |
16068 | is_variant_part = false; | |
16069 | } | |
16070 | else if (attr_form_is_ref (discr)) | |
16071 | { | |
16072 | struct dwarf2_cu *target_cu = cu; | |
16073 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16074 | ||
16075 | discr_offset = target_die->sect_off; | |
16076 | } | |
16077 | else | |
16078 | { | |
b98664d3 | 16079 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16080 | " - DIE at %s [in module %s]"), |
16081 | sect_offset_str (die->sect_off), | |
16082 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16083 | is_variant_part = false; | |
16084 | } | |
16085 | } | |
16086 | ||
e142c38c | 16087 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16088 | { |
16089 | struct field_info fi; | |
2f4732b0 | 16090 | std::vector<struct symbol *> template_args; |
c906108c | 16091 | |
639d11d3 | 16092 | child_die = die->child; |
c906108c SS |
16093 | |
16094 | while (child_die && child_die->tag) | |
16095 | { | |
2ddeaf8a | 16096 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16097 | |
2ddeaf8a | 16098 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16099 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16100 | |
c906108c SS |
16101 | child_die = sibling_die (child_die); |
16102 | } | |
16103 | ||
34eaf542 | 16104 | /* Attach template arguments to type. */ |
2f4732b0 | 16105 | if (!template_args.empty ()) |
34eaf542 | 16106 | { |
3e1d3d8c | 16107 | has_template_parameters = true; |
34eaf542 | 16108 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16109 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16110 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16111 | = XOBNEWVEC (&objfile->objfile_obstack, |
16112 | struct symbol *, | |
16113 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16114 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16115 | template_args.data (), |
34eaf542 TT |
16116 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16117 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16118 | } |
16119 | ||
c906108c SS |
16120 | /* Attach fields and member functions to the type. */ |
16121 | if (fi.nfields) | |
e7c27a73 | 16122 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16123 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16124 | { |
e7c27a73 | 16125 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16126 | |
c5aa993b | 16127 | /* Get the type which refers to the base class (possibly this |
c906108c | 16128 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16129 | class from the DW_AT_containing_type attribute. This use of |
16130 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16131 | |
e142c38c | 16132 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16133 | { |
e7c27a73 | 16134 | struct type *t = die_containing_type (die, cu); |
c906108c | 16135 | |
ae6ae975 | 16136 | set_type_vptr_basetype (type, t); |
c906108c SS |
16137 | if (type == t) |
16138 | { | |
c906108c SS |
16139 | int i; |
16140 | ||
16141 | /* Our own class provides vtbl ptr. */ | |
16142 | for (i = TYPE_NFIELDS (t) - 1; | |
16143 | i >= TYPE_N_BASECLASSES (t); | |
16144 | --i) | |
16145 | { | |
0d5cff50 | 16146 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16147 | |
1168df01 | 16148 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16149 | { |
ae6ae975 | 16150 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16151 | break; |
16152 | } | |
16153 | } | |
16154 | ||
16155 | /* Complain if virtual function table field not found. */ | |
16156 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16157 | complaint (_("virtual function table pointer " |
3e43a32a | 16158 | "not found when defining class '%s'"), |
e86ca25f | 16159 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16160 | } |
16161 | else | |
16162 | { | |
ae6ae975 | 16163 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16164 | } |
16165 | } | |
f6235d4c | 16166 | else if (cu->producer |
61012eef | 16167 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16168 | { |
16169 | /* The IBM XLC compiler does not provide direct indication | |
16170 | of the containing type, but the vtable pointer is | |
16171 | always named __vfp. */ | |
16172 | ||
16173 | int i; | |
16174 | ||
16175 | for (i = TYPE_NFIELDS (type) - 1; | |
16176 | i >= TYPE_N_BASECLASSES (type); | |
16177 | --i) | |
16178 | { | |
16179 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16180 | { | |
ae6ae975 DE |
16181 | set_type_vptr_fieldno (type, i); |
16182 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16183 | break; |
16184 | } | |
16185 | } | |
16186 | } | |
c906108c | 16187 | } |
98751a41 JK |
16188 | |
16189 | /* Copy fi.typedef_field_list linked list elements content into the | |
16190 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16191 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16192 | { |
be2daae6 | 16193 | int count = fi.typedef_field_list.size (); |
98751a41 | 16194 | |
a0d7a4ff | 16195 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16196 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16197 | = ((struct decl_field *) |
be2daae6 TT |
16198 | TYPE_ALLOC (type, |
16199 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16200 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16201 | |
be2daae6 TT |
16202 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16203 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16204 | } |
c767944b | 16205 | |
883fd55a KS |
16206 | /* Copy fi.nested_types_list linked list elements content into the |
16207 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16208 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16209 | { |
be2daae6 | 16210 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16211 | |
16212 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16213 | TYPE_NESTED_TYPES_ARRAY (type) | |
16214 | = ((struct decl_field *) | |
be2daae6 TT |
16215 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16216 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16217 | |
be2daae6 TT |
16218 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16219 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16220 | } |
c906108c | 16221 | } |
63d06c5c | 16222 | |
bb5ed363 | 16223 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16224 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16225 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16226 | |
90aeadfc DC |
16227 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16228 | snapshots) has been known to create a die giving a declaration | |
16229 | for a class that has, as a child, a die giving a definition for a | |
16230 | nested class. So we have to process our children even if the | |
16231 | current die is a declaration. Normally, of course, a declaration | |
16232 | won't have any children at all. */ | |
134d01f1 | 16233 | |
ca040673 DE |
16234 | child_die = die->child; |
16235 | ||
90aeadfc DC |
16236 | while (child_die != NULL && child_die->tag) |
16237 | { | |
16238 | if (child_die->tag == DW_TAG_member | |
16239 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16240 | || child_die->tag == DW_TAG_inheritance |
16241 | || child_die->tag == DW_TAG_template_value_param | |
16242 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16243 | { |
90aeadfc | 16244 | /* Do nothing. */ |
134d01f1 | 16245 | } |
90aeadfc DC |
16246 | else |
16247 | process_die (child_die, cu); | |
134d01f1 | 16248 | |
90aeadfc | 16249 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16250 | } |
16251 | ||
fa4028e9 JB |
16252 | /* Do not consider external references. According to the DWARF standard, |
16253 | these DIEs are identified by the fact that they have no byte_size | |
16254 | attribute, and a declaration attribute. */ | |
16255 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16256 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16257 | { |
16258 | struct symbol *sym = new_symbol (die, type, cu); | |
16259 | ||
16260 | if (has_template_parameters) | |
16261 | { | |
a776957c TT |
16262 | struct symtab *symtab; |
16263 | if (sym != nullptr) | |
16264 | symtab = symbol_symtab (sym); | |
16265 | else if (cu->line_header != nullptr) | |
16266 | { | |
16267 | /* Any related symtab will do. */ | |
16268 | symtab | |
7ba99d21 | 16269 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16270 | } |
16271 | else | |
16272 | { | |
16273 | symtab = nullptr; | |
16274 | complaint (_("could not find suitable " | |
16275 | "symtab for template parameter" | |
16276 | " - DIE at %s [in module %s]"), | |
16277 | sect_offset_str (die->sect_off), | |
16278 | objfile_name (objfile)); | |
16279 | } | |
16280 | ||
16281 | if (symtab != nullptr) | |
16282 | { | |
16283 | /* Make sure that the symtab is set on the new symbols. | |
16284 | Even though they don't appear in this symtab directly, | |
16285 | other parts of gdb assume that symbols do, and this is | |
16286 | reasonably true. */ | |
16287 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16288 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16289 | } | |
3e1d3d8c TT |
16290 | } |
16291 | } | |
134d01f1 DJ |
16292 | } |
16293 | ||
55426c9d JB |
16294 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16295 | update TYPE using some information only available in DIE's children. */ | |
16296 | ||
16297 | static void | |
16298 | update_enumeration_type_from_children (struct die_info *die, | |
16299 | struct type *type, | |
16300 | struct dwarf2_cu *cu) | |
16301 | { | |
60f7655a | 16302 | struct die_info *child_die; |
55426c9d JB |
16303 | int unsigned_enum = 1; |
16304 | int flag_enum = 1; | |
16305 | ULONGEST mask = 0; | |
55426c9d | 16306 | |
8268c778 | 16307 | auto_obstack obstack; |
55426c9d | 16308 | |
60f7655a DE |
16309 | for (child_die = die->child; |
16310 | child_die != NULL && child_die->tag; | |
16311 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16312 | { |
16313 | struct attribute *attr; | |
16314 | LONGEST value; | |
16315 | const gdb_byte *bytes; | |
16316 | struct dwarf2_locexpr_baton *baton; | |
16317 | const char *name; | |
60f7655a | 16318 | |
55426c9d JB |
16319 | if (child_die->tag != DW_TAG_enumerator) |
16320 | continue; | |
16321 | ||
16322 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16323 | if (attr == NULL) | |
16324 | continue; | |
16325 | ||
16326 | name = dwarf2_name (child_die, cu); | |
16327 | if (name == NULL) | |
16328 | name = "<anonymous enumerator>"; | |
16329 | ||
16330 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16331 | &value, &bytes, &baton); | |
16332 | if (value < 0) | |
16333 | { | |
16334 | unsigned_enum = 0; | |
16335 | flag_enum = 0; | |
16336 | } | |
16337 | else if ((mask & value) != 0) | |
16338 | flag_enum = 0; | |
16339 | else | |
16340 | mask |= value; | |
16341 | ||
16342 | /* If we already know that the enum type is neither unsigned, nor | |
16343 | a flag type, no need to look at the rest of the enumerates. */ | |
16344 | if (!unsigned_enum && !flag_enum) | |
16345 | break; | |
55426c9d JB |
16346 | } |
16347 | ||
16348 | if (unsigned_enum) | |
16349 | TYPE_UNSIGNED (type) = 1; | |
16350 | if (flag_enum) | |
16351 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16352 | } |
16353 | ||
134d01f1 DJ |
16354 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16355 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16356 | |
f792889a | 16357 | static struct type * |
134d01f1 | 16358 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16359 | { |
518817b3 | 16360 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16361 | struct type *type; |
c906108c | 16362 | struct attribute *attr; |
0114d602 | 16363 | const char *name; |
134d01f1 | 16364 | |
348e048f DE |
16365 | /* If the definition of this type lives in .debug_types, read that type. |
16366 | Don't follow DW_AT_specification though, that will take us back up | |
16367 | the chain and we want to go down. */ | |
45e58e77 | 16368 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 16369 | if (attr != nullptr) |
348e048f | 16370 | { |
ac9ec31b | 16371 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16372 | |
ac9ec31b | 16373 | /* The type's CU may not be the same as CU. |
02142a6c | 16374 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16375 | return set_die_type (die, type, cu); |
16376 | } | |
16377 | ||
c906108c SS |
16378 | type = alloc_type (objfile); |
16379 | ||
16380 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16381 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16382 | if (name != NULL) |
e86ca25f | 16383 | TYPE_NAME (type) = name; |
c906108c | 16384 | |
0626fc76 TT |
16385 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16386 | if (attr != NULL) | |
16387 | { | |
16388 | struct type *underlying_type = die_type (die, cu); | |
16389 | ||
16390 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16391 | } | |
16392 | ||
e142c38c | 16393 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16394 | if (attr != nullptr) |
c906108c SS |
16395 | { |
16396 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16397 | } | |
16398 | else | |
16399 | { | |
16400 | TYPE_LENGTH (type) = 0; | |
16401 | } | |
16402 | ||
2b4424c3 TT |
16403 | maybe_set_alignment (cu, die, type); |
16404 | ||
137033e9 JB |
16405 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16406 | declared as private in the package spec, and then defined only | |
16407 | inside the package body. Such types are known as Taft Amendment | |
16408 | Types. When another package uses such a type, an incomplete DIE | |
16409 | may be generated by the compiler. */ | |
02eb380e | 16410 | if (die_is_declaration (die, cu)) |
876cecd0 | 16411 | TYPE_STUB (type) = 1; |
02eb380e | 16412 | |
0626fc76 TT |
16413 | /* Finish the creation of this type by using the enum's children. |
16414 | We must call this even when the underlying type has been provided | |
16415 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16416 | update_enumeration_type_from_children (die, type, cu); |
16417 | ||
0626fc76 TT |
16418 | /* If this type has an underlying type that is not a stub, then we |
16419 | may use its attributes. We always use the "unsigned" attribute | |
16420 | in this situation, because ordinarily we guess whether the type | |
16421 | is unsigned -- but the guess can be wrong and the underlying type | |
16422 | can tell us the reality. However, we defer to a local size | |
16423 | attribute if one exists, because this lets the compiler override | |
16424 | the underlying type if needed. */ | |
16425 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16426 | { | |
16427 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16428 | if (TYPE_LENGTH (type) == 0) | |
16429 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16430 | if (TYPE_RAW_ALIGN (type) == 0 |
16431 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16432 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16433 | } |
16434 | ||
3d567982 TT |
16435 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16436 | ||
f792889a | 16437 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16438 | } |
16439 | ||
16440 | /* Given a pointer to a die which begins an enumeration, process all | |
16441 | the dies that define the members of the enumeration, and create the | |
16442 | symbol for the enumeration type. | |
16443 | ||
16444 | NOTE: We reverse the order of the element list. */ | |
16445 | ||
16446 | static void | |
16447 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16448 | { | |
f792889a | 16449 | struct type *this_type; |
134d01f1 | 16450 | |
f792889a DJ |
16451 | this_type = get_die_type (die, cu); |
16452 | if (this_type == NULL) | |
16453 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16454 | |
639d11d3 | 16455 | if (die->child != NULL) |
c906108c | 16456 | { |
9dc481d3 DE |
16457 | struct die_info *child_die; |
16458 | struct symbol *sym; | |
43816ebc | 16459 | std::vector<struct field> fields; |
15d034d0 | 16460 | const char *name; |
9dc481d3 | 16461 | |
639d11d3 | 16462 | child_die = die->child; |
c906108c SS |
16463 | while (child_die && child_die->tag) |
16464 | { | |
16465 | if (child_die->tag != DW_TAG_enumerator) | |
16466 | { | |
e7c27a73 | 16467 | process_die (child_die, cu); |
c906108c SS |
16468 | } |
16469 | else | |
16470 | { | |
39cbfefa DJ |
16471 | name = dwarf2_name (child_die, cu); |
16472 | if (name) | |
c906108c | 16473 | { |
f792889a | 16474 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 16475 | |
43816ebc TT |
16476 | fields.emplace_back (); |
16477 | struct field &field = fields.back (); | |
c906108c | 16478 | |
43816ebc TT |
16479 | FIELD_NAME (field) = sym->linkage_name (); |
16480 | FIELD_TYPE (field) = NULL; | |
16481 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
16482 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
16483 | } |
16484 | } | |
16485 | ||
16486 | child_die = sibling_die (child_die); | |
16487 | } | |
16488 | ||
43816ebc | 16489 | if (!fields.empty ()) |
c906108c | 16490 | { |
43816ebc | 16491 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 16492 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
16493 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
16494 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
16495 | sizeof (struct field) * fields.size ()); | |
c906108c | 16496 | } |
c906108c | 16497 | } |
134d01f1 | 16498 | |
6c83ed52 TT |
16499 | /* If we are reading an enum from a .debug_types unit, and the enum |
16500 | is a declaration, and the enum is not the signatured type in the | |
16501 | unit, then we do not want to add a symbol for it. Adding a | |
16502 | symbol would in some cases obscure the true definition of the | |
16503 | enum, giving users an incomplete type when the definition is | |
16504 | actually available. Note that we do not want to do this for all | |
16505 | enums which are just declarations, because C++0x allows forward | |
16506 | enum declarations. */ | |
3019eac3 | 16507 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16508 | && die_is_declaration (die, cu)) |
16509 | { | |
52dc124a | 16510 | struct signatured_type *sig_type; |
6c83ed52 | 16511 | |
c0f78cd4 | 16512 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16513 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16514 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16515 | return; |
16516 | } | |
16517 | ||
f792889a | 16518 | new_symbol (die, this_type, cu); |
c906108c SS |
16519 | } |
16520 | ||
16521 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16522 | the DIE's type field. For now, this only handles one dimensional | |
16523 | arrays. */ | |
16524 | ||
f792889a | 16525 | static struct type * |
e7c27a73 | 16526 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16527 | { |
518817b3 | 16528 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16529 | struct die_info *child_die; |
7e314c57 | 16530 | struct type *type; |
c906108c | 16531 | struct type *element_type, *range_type, *index_type; |
c906108c | 16532 | struct attribute *attr; |
15d034d0 | 16533 | const char *name; |
a405673c | 16534 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16535 | unsigned int bit_stride = 0; |
c906108c | 16536 | |
e7c27a73 | 16537 | element_type = die_type (die, cu); |
c906108c | 16538 | |
7e314c57 JK |
16539 | /* The die_type call above may have already set the type for this DIE. */ |
16540 | type = get_die_type (die, cu); | |
16541 | if (type) | |
16542 | return type; | |
16543 | ||
dc53a7ad JB |
16544 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16545 | if (attr != NULL) | |
a405673c JB |
16546 | { |
16547 | int stride_ok; | |
9a49df9d AB |
16548 | struct type *prop_type |
16549 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
a405673c JB |
16550 | |
16551 | byte_stride_prop | |
16552 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16553 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16554 | prop_type); | |
a405673c JB |
16555 | if (!stride_ok) |
16556 | { | |
b98664d3 | 16557 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16558 | " - DIE at %s [in module %s]"), |
16559 | sect_offset_str (die->sect_off), | |
518817b3 | 16560 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16561 | /* Ignore this attribute. We will likely not be able to print |
16562 | arrays of this type correctly, but there is little we can do | |
16563 | to help if we cannot read the attribute's value. */ | |
16564 | byte_stride_prop = NULL; | |
16565 | } | |
16566 | } | |
dc53a7ad JB |
16567 | |
16568 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16569 | if (attr != NULL) | |
16570 | bit_stride = DW_UNSND (attr); | |
16571 | ||
c906108c SS |
16572 | /* Irix 6.2 native cc creates array types without children for |
16573 | arrays with unspecified length. */ | |
639d11d3 | 16574 | if (die->child == NULL) |
c906108c | 16575 | { |
46bf5051 | 16576 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16577 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16578 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16579 | byte_stride_prop, bit_stride); |
f792889a | 16580 | return set_die_type (die, type, cu); |
c906108c SS |
16581 | } |
16582 | ||
791afaa2 | 16583 | std::vector<struct type *> range_types; |
639d11d3 | 16584 | child_die = die->child; |
c906108c SS |
16585 | while (child_die && child_die->tag) |
16586 | { | |
16587 | if (child_die->tag == DW_TAG_subrange_type) | |
16588 | { | |
f792889a | 16589 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16590 | |
f792889a | 16591 | if (child_type != NULL) |
a02abb62 | 16592 | { |
0963b4bd MS |
16593 | /* The range type was succesfully read. Save it for the |
16594 | array type creation. */ | |
791afaa2 | 16595 | range_types.push_back (child_type); |
a02abb62 | 16596 | } |
c906108c SS |
16597 | } |
16598 | child_die = sibling_die (child_die); | |
16599 | } | |
16600 | ||
16601 | /* Dwarf2 dimensions are output from left to right, create the | |
16602 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16603 | |
c906108c | 16604 | type = element_type; |
7ca2d3a3 DL |
16605 | |
16606 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16607 | { | |
16608 | int i = 0; | |
9a619af0 | 16609 | |
791afaa2 | 16610 | while (i < range_types.size ()) |
dc53a7ad | 16611 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16612 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16613 | } |
16614 | else | |
16615 | { | |
791afaa2 | 16616 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16617 | while (ndim-- > 0) |
dc53a7ad | 16618 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16619 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16620 | } |
c906108c | 16621 | |
f5f8a009 EZ |
16622 | /* Understand Dwarf2 support for vector types (like they occur on |
16623 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16624 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16625 | custom vendor extension. The main difference between a regular | |
16626 | array and the vector variant is that vectors are passed by value | |
16627 | to functions. */ | |
e142c38c | 16628 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16629 | if (attr != nullptr) |
ea37ba09 | 16630 | make_vector_type (type); |
f5f8a009 | 16631 | |
dbc98a8b KW |
16632 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16633 | implementation may choose to implement triple vectors using this | |
16634 | attribute. */ | |
16635 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16636 | if (attr != nullptr) |
dbc98a8b KW |
16637 | { |
16638 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16639 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16640 | else | |
b98664d3 | 16641 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16642 | "than the total size of elements")); |
dbc98a8b KW |
16643 | } |
16644 | ||
39cbfefa DJ |
16645 | name = dwarf2_name (die, cu); |
16646 | if (name) | |
16647 | TYPE_NAME (type) = name; | |
6e70227d | 16648 | |
2b4424c3 TT |
16649 | maybe_set_alignment (cu, die, type); |
16650 | ||
0963b4bd | 16651 | /* Install the type in the die. */ |
7e314c57 JK |
16652 | set_die_type (die, type, cu); |
16653 | ||
16654 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16655 | set_descriptive_type (type, die, cu); |
16656 | ||
7e314c57 | 16657 | return type; |
c906108c SS |
16658 | } |
16659 | ||
7ca2d3a3 | 16660 | static enum dwarf_array_dim_ordering |
6e70227d | 16661 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16662 | { |
16663 | struct attribute *attr; | |
16664 | ||
16665 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16666 | ||
435d3d88 | 16667 | if (attr != nullptr) |
aead7601 | 16668 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16669 | |
0963b4bd MS |
16670 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16671 | opposite order to the dwarf2 specification, but data is still | |
16672 | laid out as per normal fortran. | |
7ca2d3a3 | 16673 | |
0963b4bd MS |
16674 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16675 | version checking. */ | |
7ca2d3a3 | 16676 | |
905e0470 PM |
16677 | if (cu->language == language_fortran |
16678 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16679 | { |
16680 | return DW_ORD_row_major; | |
16681 | } | |
16682 | ||
6e70227d | 16683 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16684 | { |
16685 | case array_column_major: | |
16686 | return DW_ORD_col_major; | |
16687 | case array_row_major: | |
16688 | default: | |
16689 | return DW_ORD_row_major; | |
16690 | }; | |
16691 | } | |
16692 | ||
72019c9c | 16693 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16694 | the DIE's type field. */ |
72019c9c | 16695 | |
f792889a | 16696 | static struct type * |
72019c9c GM |
16697 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16698 | { | |
7e314c57 JK |
16699 | struct type *domain_type, *set_type; |
16700 | struct attribute *attr; | |
f792889a | 16701 | |
7e314c57 JK |
16702 | domain_type = die_type (die, cu); |
16703 | ||
16704 | /* The die_type call above may have already set the type for this DIE. */ | |
16705 | set_type = get_die_type (die, cu); | |
16706 | if (set_type) | |
16707 | return set_type; | |
16708 | ||
16709 | set_type = create_set_type (NULL, domain_type); | |
16710 | ||
16711 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16712 | if (attr != nullptr) |
d09039dd | 16713 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16714 | |
2b4424c3 TT |
16715 | maybe_set_alignment (cu, die, set_type); |
16716 | ||
f792889a | 16717 | return set_die_type (die, set_type, cu); |
72019c9c | 16718 | } |
7ca2d3a3 | 16719 | |
0971de02 TT |
16720 | /* A helper for read_common_block that creates a locexpr baton. |
16721 | SYM is the symbol which we are marking as computed. | |
16722 | COMMON_DIE is the DIE for the common block. | |
16723 | COMMON_LOC is the location expression attribute for the common | |
16724 | block itself. | |
16725 | MEMBER_LOC is the location expression attribute for the particular | |
16726 | member of the common block that we are processing. | |
16727 | CU is the CU from which the above come. */ | |
16728 | ||
16729 | static void | |
16730 | mark_common_block_symbol_computed (struct symbol *sym, | |
16731 | struct die_info *common_die, | |
16732 | struct attribute *common_loc, | |
16733 | struct attribute *member_loc, | |
16734 | struct dwarf2_cu *cu) | |
16735 | { | |
518817b3 SM |
16736 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16737 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16738 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16739 | struct dwarf2_locexpr_baton *baton; | |
16740 | gdb_byte *ptr; | |
16741 | unsigned int cu_off; | |
16742 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16743 | LONGEST offset = 0; | |
16744 | ||
16745 | gdb_assert (common_loc && member_loc); | |
16746 | gdb_assert (attr_form_is_block (common_loc)); | |
16747 | gdb_assert (attr_form_is_block (member_loc) | |
16748 | || attr_form_is_constant (member_loc)); | |
16749 | ||
8d749320 | 16750 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16751 | baton->per_cu = cu->per_cu; |
16752 | gdb_assert (baton->per_cu); | |
16753 | ||
16754 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16755 | ||
16756 | if (attr_form_is_constant (member_loc)) | |
16757 | { | |
16758 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16759 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16760 | } | |
16761 | else | |
16762 | baton->size += DW_BLOCK (member_loc)->size; | |
16763 | ||
224c3ddb | 16764 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16765 | baton->data = ptr; |
16766 | ||
16767 | *ptr++ = DW_OP_call4; | |
9c541725 | 16768 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16769 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16770 | ptr += 4; | |
16771 | ||
16772 | if (attr_form_is_constant (member_loc)) | |
16773 | { | |
16774 | *ptr++ = DW_OP_addr; | |
16775 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16776 | ptr += cu->header.addr_size; | |
16777 | } | |
16778 | else | |
16779 | { | |
16780 | /* We have to copy the data here, because DW_OP_call4 will only | |
16781 | use a DW_AT_location attribute. */ | |
16782 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16783 | ptr += DW_BLOCK (member_loc)->size; | |
16784 | } | |
16785 | ||
16786 | *ptr++ = DW_OP_plus; | |
16787 | gdb_assert (ptr - baton->data == baton->size); | |
16788 | ||
0971de02 | 16789 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16790 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16791 | } |
16792 | ||
4357ac6c TT |
16793 | /* Create appropriate locally-scoped variables for all the |
16794 | DW_TAG_common_block entries. Also create a struct common_block | |
16795 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16796 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16797 | variable names. */ |
c906108c SS |
16798 | |
16799 | static void | |
e7c27a73 | 16800 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16801 | { |
0971de02 TT |
16802 | struct attribute *attr; |
16803 | ||
16804 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16805 | if (attr != nullptr) |
0971de02 TT |
16806 | { |
16807 | /* Support the .debug_loc offsets. */ | |
16808 | if (attr_form_is_block (attr)) | |
16809 | { | |
16810 | /* Ok. */ | |
16811 | } | |
16812 | else if (attr_form_is_section_offset (attr)) | |
16813 | { | |
16814 | dwarf2_complex_location_expr_complaint (); | |
16815 | attr = NULL; | |
16816 | } | |
16817 | else | |
16818 | { | |
16819 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16820 | "common block member"); | |
16821 | attr = NULL; | |
16822 | } | |
16823 | } | |
16824 | ||
639d11d3 | 16825 | if (die->child != NULL) |
c906108c | 16826 | { |
518817b3 | 16827 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16828 | struct die_info *child_die; |
16829 | size_t n_entries = 0, size; | |
16830 | struct common_block *common_block; | |
16831 | struct symbol *sym; | |
74ac6d43 | 16832 | |
4357ac6c TT |
16833 | for (child_die = die->child; |
16834 | child_die && child_die->tag; | |
16835 | child_die = sibling_die (child_die)) | |
16836 | ++n_entries; | |
16837 | ||
16838 | size = (sizeof (struct common_block) | |
16839 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16840 | common_block |
16841 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16842 | size); | |
4357ac6c TT |
16843 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16844 | common_block->n_entries = 0; | |
16845 | ||
16846 | for (child_die = die->child; | |
16847 | child_die && child_die->tag; | |
16848 | child_die = sibling_die (child_die)) | |
16849 | { | |
16850 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16851 | symbol scope. */ | |
e7c27a73 | 16852 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16853 | if (sym != NULL) |
16854 | { | |
16855 | struct attribute *member_loc; | |
16856 | ||
16857 | common_block->contents[common_block->n_entries++] = sym; | |
16858 | ||
16859 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16860 | cu); | |
16861 | if (member_loc) | |
16862 | { | |
16863 | /* GDB has handled this for a long time, but it is | |
16864 | not specified by DWARF. It seems to have been | |
16865 | emitted by gfortran at least as recently as: | |
16866 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16867 | complaint (_("Variable in common block has " |
0971de02 | 16868 | "DW_AT_data_member_location " |
9d8780f0 SM |
16869 | "- DIE at %s [in module %s]"), |
16870 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16871 | objfile_name (objfile)); |
0971de02 TT |
16872 | |
16873 | if (attr_form_is_section_offset (member_loc)) | |
16874 | dwarf2_complex_location_expr_complaint (); | |
16875 | else if (attr_form_is_constant (member_loc) | |
16876 | || attr_form_is_block (member_loc)) | |
16877 | { | |
435d3d88 | 16878 | if (attr != nullptr) |
0971de02 TT |
16879 | mark_common_block_symbol_computed (sym, die, attr, |
16880 | member_loc, cu); | |
16881 | } | |
16882 | else | |
16883 | dwarf2_complex_location_expr_complaint (); | |
16884 | } | |
16885 | } | |
c906108c | 16886 | } |
4357ac6c TT |
16887 | |
16888 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16889 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16890 | } |
16891 | } | |
16892 | ||
0114d602 | 16893 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16894 | |
0114d602 DJ |
16895 | static struct type * |
16896 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16897 | { |
518817b3 | 16898 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16899 | const char *previous_prefix, *name; |
9219021c | 16900 | int is_anonymous; |
0114d602 DJ |
16901 | struct type *type; |
16902 | ||
16903 | /* For extensions, reuse the type of the original namespace. */ | |
16904 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16905 | { | |
16906 | struct die_info *ext_die; | |
16907 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16908 | |
0114d602 DJ |
16909 | ext_die = dwarf2_extension (die, &ext_cu); |
16910 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16911 | |
16912 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16913 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16914 | return set_die_type (die, type, cu); |
16915 | } | |
9219021c | 16916 | |
e142c38c | 16917 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16918 | |
16919 | /* Now build the name of the current namespace. */ | |
16920 | ||
0114d602 DJ |
16921 | previous_prefix = determine_prefix (die, cu); |
16922 | if (previous_prefix[0] != '\0') | |
16923 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16924 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16925 | |
16926 | /* Create the type. */ | |
19f392bc | 16927 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16928 | |
60531b24 | 16929 | return set_die_type (die, type, cu); |
0114d602 DJ |
16930 | } |
16931 | ||
22cee43f | 16932 | /* Read a namespace scope. */ |
0114d602 DJ |
16933 | |
16934 | static void | |
16935 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16936 | { | |
518817b3 | 16937 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16938 | int is_anonymous; |
9219021c | 16939 | |
5c4e30ca DC |
16940 | /* Add a symbol associated to this if we haven't seen the namespace |
16941 | before. Also, add a using directive if it's an anonymous | |
16942 | namespace. */ | |
9219021c | 16943 | |
f2f0e013 | 16944 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16945 | { |
16946 | struct type *type; | |
16947 | ||
0114d602 | 16948 | type = read_type_die (die, cu); |
e7c27a73 | 16949 | new_symbol (die, type, cu); |
5c4e30ca | 16950 | |
e8e80198 | 16951 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16952 | if (is_anonymous) |
0114d602 DJ |
16953 | { |
16954 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16955 | |
eb1e02fd | 16956 | std::vector<const char *> excludes; |
804d2729 | 16957 | add_using_directive (using_directives (cu), |
22cee43f | 16958 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16959 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16960 | } |
5c4e30ca | 16961 | } |
9219021c | 16962 | |
639d11d3 | 16963 | if (die->child != NULL) |
d9fa45fe | 16964 | { |
639d11d3 | 16965 | struct die_info *child_die = die->child; |
6e70227d | 16966 | |
d9fa45fe DC |
16967 | while (child_die && child_die->tag) |
16968 | { | |
e7c27a73 | 16969 | process_die (child_die, cu); |
d9fa45fe DC |
16970 | child_die = sibling_die (child_die); |
16971 | } | |
16972 | } | |
38d518c9 EZ |
16973 | } |
16974 | ||
f55ee35c JK |
16975 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16976 | imported module. Still we need that type as local Fortran "use ... only" | |
16977 | declaration imports depend on the created type in determine_prefix. */ | |
16978 | ||
16979 | static struct type * | |
16980 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16981 | { | |
518817b3 | 16982 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16983 | const char *module_name; |
f55ee35c JK |
16984 | struct type *type; |
16985 | ||
16986 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16987 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16988 | |
f55ee35c JK |
16989 | return set_die_type (die, type, cu); |
16990 | } | |
16991 | ||
5d7cb8df JK |
16992 | /* Read a Fortran module. */ |
16993 | ||
16994 | static void | |
16995 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16996 | { | |
16997 | struct die_info *child_die = die->child; | |
530e8392 KB |
16998 | struct type *type; |
16999 | ||
17000 | type = read_type_die (die, cu); | |
17001 | new_symbol (die, type, cu); | |
5d7cb8df | 17002 | |
5d7cb8df JK |
17003 | while (child_die && child_die->tag) |
17004 | { | |
17005 | process_die (child_die, cu); | |
17006 | child_die = sibling_die (child_die); | |
17007 | } | |
17008 | } | |
17009 | ||
38d518c9 EZ |
17010 | /* Return the name of the namespace represented by DIE. Set |
17011 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17012 | namespace. */ | |
17013 | ||
17014 | static const char * | |
e142c38c | 17015 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17016 | { |
17017 | struct die_info *current_die; | |
17018 | const char *name = NULL; | |
17019 | ||
17020 | /* Loop through the extensions until we find a name. */ | |
17021 | ||
17022 | for (current_die = die; | |
17023 | current_die != NULL; | |
f2f0e013 | 17024 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17025 | { |
96553a0c DE |
17026 | /* We don't use dwarf2_name here so that we can detect the absence |
17027 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17028 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17029 | |
38d518c9 EZ |
17030 | if (name != NULL) |
17031 | break; | |
17032 | } | |
17033 | ||
17034 | /* Is it an anonymous namespace? */ | |
17035 | ||
17036 | *is_anonymous = (name == NULL); | |
17037 | if (*is_anonymous) | |
2b1dbab0 | 17038 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17039 | |
17040 | return name; | |
d9fa45fe DC |
17041 | } |
17042 | ||
c906108c SS |
17043 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17044 | the user defined type vector. */ | |
17045 | ||
f792889a | 17046 | static struct type * |
e7c27a73 | 17047 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17048 | { |
518817b3 SM |
17049 | struct gdbarch *gdbarch |
17050 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 17051 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17052 | struct type *type; |
8b2dbe47 KB |
17053 | struct attribute *attr_byte_size; |
17054 | struct attribute *attr_address_class; | |
17055 | int byte_size, addr_class; | |
7e314c57 JK |
17056 | struct type *target_type; |
17057 | ||
17058 | target_type = die_type (die, cu); | |
c906108c | 17059 | |
7e314c57 JK |
17060 | /* The die_type call above may have already set the type for this DIE. */ |
17061 | type = get_die_type (die, cu); | |
17062 | if (type) | |
17063 | return type; | |
17064 | ||
17065 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17066 | |
e142c38c | 17067 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17068 | if (attr_byte_size) |
17069 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17070 | else |
8b2dbe47 KB |
17071 | byte_size = cu_header->addr_size; |
17072 | ||
e142c38c | 17073 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17074 | if (attr_address_class) |
17075 | addr_class = DW_UNSND (attr_address_class); | |
17076 | else | |
17077 | addr_class = DW_ADDR_none; | |
17078 | ||
2b4424c3 TT |
17079 | ULONGEST alignment = get_alignment (cu, die); |
17080 | ||
17081 | /* If the pointer size, alignment, or address class is different | |
17082 | than the default, create a type variant marked as such and set | |
17083 | the length accordingly. */ | |
17084 | if (TYPE_LENGTH (type) != byte_size | |
17085 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17086 | && alignment != TYPE_RAW_ALIGN (type)) | |
17087 | || addr_class != DW_ADDR_none) | |
c906108c | 17088 | { |
5e2b427d | 17089 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17090 | { |
17091 | int type_flags; | |
17092 | ||
849957d9 | 17093 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17094 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17095 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17096 | == 0); | |
8b2dbe47 KB |
17097 | type = make_type_with_address_space (type, type_flags); |
17098 | } | |
17099 | else if (TYPE_LENGTH (type) != byte_size) | |
17100 | { | |
b98664d3 | 17101 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17102 | } |
2b4424c3 TT |
17103 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17104 | { | |
b98664d3 | 17105 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17106 | " - DIE at %s [in module %s]"), |
17107 | sect_offset_str (die->sect_off), | |
17108 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17109 | } | |
6e70227d | 17110 | else |
9a619af0 MS |
17111 | { |
17112 | /* Should we also complain about unhandled address classes? */ | |
17113 | } | |
c906108c | 17114 | } |
8b2dbe47 KB |
17115 | |
17116 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17117 | set_type_align (type, alignment); |
f792889a | 17118 | return set_die_type (die, type, cu); |
c906108c SS |
17119 | } |
17120 | ||
17121 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17122 | the user defined type vector. */ | |
17123 | ||
f792889a | 17124 | static struct type * |
e7c27a73 | 17125 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17126 | { |
17127 | struct type *type; | |
17128 | struct type *to_type; | |
17129 | struct type *domain; | |
17130 | ||
e7c27a73 DJ |
17131 | to_type = die_type (die, cu); |
17132 | domain = die_containing_type (die, cu); | |
0d5de010 | 17133 | |
7e314c57 JK |
17134 | /* The calls above may have already set the type for this DIE. */ |
17135 | type = get_die_type (die, cu); | |
17136 | if (type) | |
17137 | return type; | |
17138 | ||
0d5de010 DJ |
17139 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17140 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17141 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17142 | { | |
518817b3 SM |
17143 | struct type *new_type |
17144 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17145 | |
17146 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17147 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17148 | TYPE_VARARGS (to_type)); | |
17149 | type = lookup_methodptr_type (new_type); | |
17150 | } | |
0d5de010 DJ |
17151 | else |
17152 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17153 | |
f792889a | 17154 | return set_die_type (die, type, cu); |
c906108c SS |
17155 | } |
17156 | ||
4297a3f0 | 17157 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17158 | the user defined type vector. */ |
17159 | ||
f792889a | 17160 | static struct type * |
4297a3f0 AV |
17161 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17162 | enum type_code refcode) | |
c906108c | 17163 | { |
e7c27a73 | 17164 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17165 | struct type *type, *target_type; |
c906108c SS |
17166 | struct attribute *attr; |
17167 | ||
4297a3f0 AV |
17168 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17169 | ||
7e314c57 JK |
17170 | target_type = die_type (die, cu); |
17171 | ||
17172 | /* The die_type call above may have already set the type for this DIE. */ | |
17173 | type = get_die_type (die, cu); | |
17174 | if (type) | |
17175 | return type; | |
17176 | ||
4297a3f0 | 17177 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17178 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17179 | if (attr != nullptr) |
c906108c SS |
17180 | { |
17181 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17182 | } | |
17183 | else | |
17184 | { | |
107d2387 | 17185 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17186 | } |
2b4424c3 | 17187 | maybe_set_alignment (cu, die, type); |
f792889a | 17188 | return set_die_type (die, type, cu); |
c906108c SS |
17189 | } |
17190 | ||
cf363f18 MW |
17191 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17192 | outputs DWARF type qualifiers that apply to an array, not the | |
17193 | element type. But GDB relies on the array element type to carry | |
17194 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17195 | specification. */ | |
17196 | ||
17197 | static struct type * | |
17198 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17199 | struct type *base_type, int cnst, int voltl) | |
17200 | { | |
17201 | struct type *el_type, *inner_array; | |
17202 | ||
17203 | base_type = copy_type (base_type); | |
17204 | inner_array = base_type; | |
17205 | ||
17206 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17207 | { | |
17208 | TYPE_TARGET_TYPE (inner_array) = | |
17209 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17210 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17211 | } | |
17212 | ||
17213 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17214 | cnst |= TYPE_CONST (el_type); | |
17215 | voltl |= TYPE_VOLATILE (el_type); | |
17216 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17217 | ||
17218 | return set_die_type (die, base_type, cu); | |
17219 | } | |
17220 | ||
f792889a | 17221 | static struct type * |
e7c27a73 | 17222 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17223 | { |
f792889a | 17224 | struct type *base_type, *cv_type; |
c906108c | 17225 | |
e7c27a73 | 17226 | base_type = die_type (die, cu); |
7e314c57 JK |
17227 | |
17228 | /* The die_type call above may have already set the type for this DIE. */ | |
17229 | cv_type = get_die_type (die, cu); | |
17230 | if (cv_type) | |
17231 | return cv_type; | |
17232 | ||
2f608a3a KW |
17233 | /* In case the const qualifier is applied to an array type, the element type |
17234 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17235 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17236 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17237 | |
f792889a DJ |
17238 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17239 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17240 | } |
17241 | ||
f792889a | 17242 | static struct type * |
e7c27a73 | 17243 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17244 | { |
f792889a | 17245 | struct type *base_type, *cv_type; |
c906108c | 17246 | |
e7c27a73 | 17247 | base_type = die_type (die, cu); |
7e314c57 JK |
17248 | |
17249 | /* The die_type call above may have already set the type for this DIE. */ | |
17250 | cv_type = get_die_type (die, cu); | |
17251 | if (cv_type) | |
17252 | return cv_type; | |
17253 | ||
cf363f18 MW |
17254 | /* In case the volatile qualifier is applied to an array type, the |
17255 | element type is so qualified, not the array type (section 6.7.3 | |
17256 | of C99). */ | |
17257 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17258 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17259 | ||
f792889a DJ |
17260 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17261 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17262 | } |
17263 | ||
06d66ee9 TT |
17264 | /* Handle DW_TAG_restrict_type. */ |
17265 | ||
17266 | static struct type * | |
17267 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17268 | { | |
17269 | struct type *base_type, *cv_type; | |
17270 | ||
17271 | base_type = die_type (die, cu); | |
17272 | ||
17273 | /* The die_type call above may have already set the type for this DIE. */ | |
17274 | cv_type = get_die_type (die, cu); | |
17275 | if (cv_type) | |
17276 | return cv_type; | |
17277 | ||
17278 | cv_type = make_restrict_type (base_type); | |
17279 | return set_die_type (die, cv_type, cu); | |
17280 | } | |
17281 | ||
a2c2acaf MW |
17282 | /* Handle DW_TAG_atomic_type. */ |
17283 | ||
17284 | static struct type * | |
17285 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17286 | { | |
17287 | struct type *base_type, *cv_type; | |
17288 | ||
17289 | base_type = die_type (die, cu); | |
17290 | ||
17291 | /* The die_type call above may have already set the type for this DIE. */ | |
17292 | cv_type = get_die_type (die, cu); | |
17293 | if (cv_type) | |
17294 | return cv_type; | |
17295 | ||
17296 | cv_type = make_atomic_type (base_type); | |
17297 | return set_die_type (die, cv_type, cu); | |
17298 | } | |
17299 | ||
c906108c SS |
17300 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17301 | the user defined type vector. It isn't really a user defined type, | |
17302 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17303 | attribute to reference it. */ | |
17304 | ||
f792889a | 17305 | static struct type * |
e7c27a73 | 17306 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17307 | { |
518817b3 | 17308 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17309 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17310 | struct type *type, *range_type, *index_type, *char_type; |
17311 | struct attribute *attr; | |
216a7e6b AB |
17312 | struct dynamic_prop prop; |
17313 | bool length_is_constant = true; | |
17314 | LONGEST length; | |
17315 | ||
17316 | /* There are a couple of places where bit sizes might be made use of | |
17317 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17318 | of make use of these. Handling bit sizes that are a multiple of the | |
17319 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17320 | with that problem when we have to. Warn about these attributes being | |
17321 | unsupported, then parse the type and ignore them like we always | |
17322 | have. */ | |
17323 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17324 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17325 | { | |
17326 | static bool warning_printed = false; | |
17327 | if (!warning_printed) | |
17328 | { | |
17329 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17330 | "currently supported on DW_TAG_string_type.")); | |
17331 | warning_printed = true; | |
17332 | } | |
17333 | } | |
c906108c | 17334 | |
e142c38c | 17335 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
216a7e6b AB |
17336 | if (attr != nullptr && !attr_form_is_constant (attr)) |
17337 | { | |
17338 | /* The string length describes the location at which the length of | |
17339 | the string can be found. The size of the length field can be | |
17340 | specified with one of the attributes below. */ | |
17341 | struct type *prop_type; | |
17342 | struct attribute *len | |
17343 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17344 | if (len == nullptr) | |
17345 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
17346 | if (len != nullptr && attr_form_is_constant (len)) | |
17347 | { | |
17348 | /* Pass 0 as the default as we know this attribute is constant | |
17349 | and the default value will not be returned. */ | |
17350 | LONGEST sz = dwarf2_get_attr_constant_value (len, 0); | |
17351 | prop_type = dwarf2_per_cu_int_type (cu->per_cu, sz, true); | |
17352 | } | |
17353 | else | |
17354 | { | |
17355 | /* If the size is not specified then we assume it is the size of | |
17356 | an address on this target. */ | |
17357 | prop_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, true); | |
17358 | } | |
17359 | ||
17360 | /* Convert the attribute into a dynamic property. */ | |
17361 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17362 | length = 1; | |
17363 | else | |
17364 | length_is_constant = false; | |
17365 | } | |
17366 | else if (attr != nullptr) | |
17367 | { | |
17368 | /* This DW_AT_string_length just contains the length with no | |
17369 | indirection. There's no need to create a dynamic property in this | |
17370 | case. Pass 0 for the default value as we know it will not be | |
17371 | returned in this case. */ | |
17372 | length = dwarf2_get_attr_constant_value (attr, 0); | |
17373 | } | |
17374 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17375 | { |
216a7e6b AB |
17376 | /* We don't currently support non-constant byte sizes for strings. */ |
17377 | length = dwarf2_get_attr_constant_value (attr, 1); | |
c906108c SS |
17378 | } |
17379 | else | |
17380 | { | |
216a7e6b AB |
17381 | /* Use 1 as a fallback length if we have nothing else. */ |
17382 | length = 1; | |
c906108c | 17383 | } |
6ccb9162 | 17384 | |
46bf5051 | 17385 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17386 | if (length_is_constant) |
17387 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17388 | else | |
17389 | { | |
17390 | struct dynamic_prop low_bound; | |
17391 | ||
17392 | low_bound.kind = PROP_CONST; | |
17393 | low_bound.data.const_val = 1; | |
17394 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17395 | } | |
3b7538c0 UW |
17396 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17397 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17398 | |
f792889a | 17399 | return set_die_type (die, type, cu); |
c906108c SS |
17400 | } |
17401 | ||
4d804846 JB |
17402 | /* Assuming that DIE corresponds to a function, returns nonzero |
17403 | if the function is prototyped. */ | |
17404 | ||
17405 | static int | |
17406 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17407 | { | |
17408 | struct attribute *attr; | |
17409 | ||
17410 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17411 | if (attr && (DW_UNSND (attr) != 0)) | |
17412 | return 1; | |
17413 | ||
17414 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17415 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17416 | languages that allow unprototyped functions (Eg: Objective C). |
17417 | For all other languages, assume that functions are always | |
17418 | prototyped. */ | |
17419 | if (cu->language != language_c | |
17420 | && cu->language != language_objc | |
17421 | && cu->language != language_opencl) | |
17422 | return 1; | |
17423 | ||
17424 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17425 | prototyped and unprototyped functions; default to prototyped, | |
17426 | since that is more common in modern code (and RealView warns | |
17427 | about unprototyped functions). */ | |
17428 | if (producer_is_realview (cu->producer)) | |
17429 | return 1; | |
17430 | ||
17431 | return 0; | |
17432 | } | |
17433 | ||
c906108c SS |
17434 | /* Handle DIES due to C code like: |
17435 | ||
17436 | struct foo | |
c5aa993b JM |
17437 | { |
17438 | int (*funcp)(int a, long l); | |
17439 | int b; | |
17440 | }; | |
c906108c | 17441 | |
0963b4bd | 17442 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17443 | |
f792889a | 17444 | static struct type * |
e7c27a73 | 17445 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17446 | { |
518817b3 | 17447 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17448 | struct type *type; /* Type that this function returns. */ |
17449 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17450 | struct attribute *attr; |
17451 | ||
e7c27a73 | 17452 | type = die_type (die, cu); |
7e314c57 JK |
17453 | |
17454 | /* The die_type call above may have already set the type for this DIE. */ | |
17455 | ftype = get_die_type (die, cu); | |
17456 | if (ftype) | |
17457 | return ftype; | |
17458 | ||
0c8b41f1 | 17459 | ftype = lookup_function_type (type); |
c906108c | 17460 | |
4d804846 | 17461 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17462 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17463 | |
c055b101 CV |
17464 | /* Store the calling convention in the type if it's available in |
17465 | the subroutine die. Otherwise set the calling convention to | |
17466 | the default value DW_CC_normal. */ | |
17467 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17468 | if (attr != nullptr |
17469 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17470 | TYPE_CALLING_CONVENTION (ftype) | |
17471 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17472 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17473 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17474 | else | |
17475 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17476 | |
743649fd MW |
17477 | /* Record whether the function returns normally to its caller or not |
17478 | if the DWARF producer set that information. */ | |
17479 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17480 | if (attr && (DW_UNSND (attr) != 0)) | |
17481 | TYPE_NO_RETURN (ftype) = 1; | |
17482 | ||
76c10ea2 GM |
17483 | /* We need to add the subroutine type to the die immediately so |
17484 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17485 | declared as the same subroutine type. */ |
76c10ea2 | 17486 | set_die_type (die, ftype, cu); |
6e70227d | 17487 | |
639d11d3 | 17488 | if (die->child != NULL) |
c906108c | 17489 | { |
bb5ed363 | 17490 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17491 | struct die_info *child_die; |
8072405b | 17492 | int nparams, iparams; |
c906108c SS |
17493 | |
17494 | /* Count the number of parameters. | |
17495 | FIXME: GDB currently ignores vararg functions, but knows about | |
17496 | vararg member functions. */ | |
8072405b | 17497 | nparams = 0; |
639d11d3 | 17498 | child_die = die->child; |
c906108c SS |
17499 | while (child_die && child_die->tag) |
17500 | { | |
17501 | if (child_die->tag == DW_TAG_formal_parameter) | |
17502 | nparams++; | |
17503 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17504 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17505 | child_die = sibling_die (child_die); |
17506 | } | |
17507 | ||
17508 | /* Allocate storage for parameters and fill them in. */ | |
17509 | TYPE_NFIELDS (ftype) = nparams; | |
17510 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17511 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17512 | |
8072405b JK |
17513 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17514 | even if we error out during the parameters reading below. */ | |
17515 | for (iparams = 0; iparams < nparams; iparams++) | |
17516 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17517 | ||
17518 | iparams = 0; | |
639d11d3 | 17519 | child_die = die->child; |
c906108c SS |
17520 | while (child_die && child_die->tag) |
17521 | { | |
17522 | if (child_die->tag == DW_TAG_formal_parameter) | |
17523 | { | |
3ce3b1ba PA |
17524 | struct type *arg_type; |
17525 | ||
17526 | /* DWARF version 2 has no clean way to discern C++ | |
17527 | static and non-static member functions. G++ helps | |
17528 | GDB by marking the first parameter for non-static | |
17529 | member functions (which is the this pointer) as | |
17530 | artificial. We pass this information to | |
17531 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17532 | ||
17533 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17534 | 4.5 does not yet generate. */ | |
e142c38c | 17535 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17536 | if (attr != nullptr) |
c906108c SS |
17537 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17538 | else | |
9c37b5ae | 17539 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17540 | arg_type = die_type (child_die, cu); |
17541 | ||
17542 | /* RealView does not mark THIS as const, which the testsuite | |
17543 | expects. GCC marks THIS as const in method definitions, | |
17544 | but not in the class specifications (GCC PR 43053). */ | |
17545 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17546 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17547 | { | |
17548 | int is_this = 0; | |
17549 | struct dwarf2_cu *arg_cu = cu; | |
17550 | const char *name = dwarf2_name (child_die, cu); | |
17551 | ||
17552 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17553 | if (attr != nullptr) |
3ce3b1ba PA |
17554 | { |
17555 | /* If the compiler emits this, use it. */ | |
17556 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17557 | is_this = 1; | |
17558 | } | |
17559 | else if (name && strcmp (name, "this") == 0) | |
17560 | /* Function definitions will have the argument names. */ | |
17561 | is_this = 1; | |
17562 | else if (name == NULL && iparams == 0) | |
17563 | /* Declarations may not have the names, so like | |
17564 | elsewhere in GDB, assume an artificial first | |
17565 | argument is "this". */ | |
17566 | is_this = 1; | |
17567 | ||
17568 | if (is_this) | |
17569 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17570 | arg_type, 0); | |
17571 | } | |
17572 | ||
17573 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17574 | iparams++; |
17575 | } | |
17576 | child_die = sibling_die (child_die); | |
17577 | } | |
17578 | } | |
17579 | ||
76c10ea2 | 17580 | return ftype; |
c906108c SS |
17581 | } |
17582 | ||
f792889a | 17583 | static struct type * |
e7c27a73 | 17584 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17585 | { |
518817b3 | 17586 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17587 | const char *name = NULL; |
3c8e0968 | 17588 | struct type *this_type, *target_type; |
c906108c | 17589 | |
94af9270 | 17590 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17591 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17592 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17593 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17594 | target_type = die_type (die, cu); |
17595 | if (target_type != this_type) | |
17596 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17597 | else | |
17598 | { | |
17599 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17600 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17601 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17602 | "- DIE at %s [in module %s]"), |
17603 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17604 | TYPE_TARGET_TYPE (this_type) = NULL; |
17605 | } | |
f792889a | 17606 | return this_type; |
c906108c SS |
17607 | } |
17608 | ||
9b790ce7 UW |
17609 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17610 | (which may be different from NAME) to the architecture back-end to allow | |
17611 | it to guess the correct format if necessary. */ | |
17612 | ||
17613 | static struct type * | |
17614 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17615 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
17616 | { |
17617 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17618 | const struct floatformat **format; | |
17619 | struct type *type; | |
17620 | ||
17621 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17622 | if (format) | |
103a685e | 17623 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17624 | else |
77b7c781 | 17625 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17626 | |
17627 | return type; | |
17628 | } | |
17629 | ||
eb77c9df AB |
17630 | /* Allocate an integer type of size BITS and name NAME. */ |
17631 | ||
17632 | static struct type * | |
17633 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17634 | int bits, int unsigned_p, const char *name) | |
17635 | { | |
17636 | struct type *type; | |
17637 | ||
17638 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17639 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17640 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17641 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17642 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17643 | type = objfile_type (objfile)->builtin_void; |
17644 | else | |
17645 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17646 | ||
17647 | return type; | |
17648 | } | |
17649 | ||
8bdc1658 AB |
17650 | /* Initialise and return a floating point type of size BITS suitable for |
17651 | use as a component of a complex number. The NAME_HINT is passed through | |
17652 | when initialising the floating point type and is the name of the complex | |
17653 | type. | |
17654 | ||
17655 | As DWARF doesn't currently provide an explicit name for the components | |
17656 | of a complex number, but it can be helpful to have these components | |
17657 | named, we try to select a suitable name based on the size of the | |
17658 | component. */ | |
17659 | static struct type * | |
17660 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17661 | struct objfile *objfile, | |
103a685e TT |
17662 | int bits, const char *name_hint, |
17663 | enum bfd_endian byte_order) | |
8bdc1658 AB |
17664 | { |
17665 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17666 | struct type *tt = nullptr; | |
17667 | ||
35add35e AB |
17668 | /* Try to find a suitable floating point builtin type of size BITS. |
17669 | We're going to use the name of this type as the name for the complex | |
17670 | target type that we are about to create. */ | |
1db455a7 | 17671 | switch (cu->language) |
8bdc1658 | 17672 | { |
1db455a7 AB |
17673 | case language_fortran: |
17674 | switch (bits) | |
17675 | { | |
17676 | case 32: | |
17677 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17678 | break; | |
17679 | case 64: | |
17680 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17681 | break; | |
17682 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17683 | case 128: | |
17684 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17685 | break; | |
17686 | } | |
8bdc1658 | 17687 | break; |
1db455a7 AB |
17688 | default: |
17689 | switch (bits) | |
17690 | { | |
17691 | case 32: | |
17692 | tt = builtin_type (gdbarch)->builtin_float; | |
17693 | break; | |
17694 | case 64: | |
17695 | tt = builtin_type (gdbarch)->builtin_double; | |
17696 | break; | |
17697 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17698 | case 128: | |
17699 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17700 | break; | |
17701 | } | |
8bdc1658 AB |
17702 | break; |
17703 | } | |
17704 | ||
35add35e AB |
17705 | /* If the type we found doesn't match the size we were looking for, then |
17706 | pretend we didn't find a type at all, the complex target type we | |
17707 | create will then be nameless. */ | |
a12e5744 | 17708 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17709 | tt = nullptr; |
17710 | ||
8bdc1658 | 17711 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 17712 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17713 | } |
17714 | ||
c906108c SS |
17715 | /* Find a representation of a given base type and install |
17716 | it in the TYPE field of the die. */ | |
17717 | ||
f792889a | 17718 | static struct type * |
e7c27a73 | 17719 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17720 | { |
518817b3 | 17721 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17722 | struct type *type; |
17723 | struct attribute *attr; | |
19f392bc | 17724 | int encoding = 0, bits = 0; |
15d034d0 | 17725 | const char *name; |
34877895 | 17726 | gdbarch *arch; |
c906108c | 17727 | |
e142c38c | 17728 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17729 | if (attr != nullptr) |
34877895 | 17730 | encoding = DW_UNSND (attr); |
e142c38c | 17731 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17732 | if (attr != nullptr) |
34877895 | 17733 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17734 | name = dwarf2_name (die, cu); |
6ccb9162 | 17735 | if (!name) |
34877895 | 17736 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
17737 | |
17738 | arch = get_objfile_arch (objfile); | |
17739 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
17740 | ||
34877895 PJ |
17741 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17742 | if (attr) | |
103a685e TT |
17743 | { |
17744 | int endianity = DW_UNSND (attr); | |
17745 | ||
17746 | switch (endianity) | |
17747 | { | |
17748 | case DW_END_big: | |
17749 | byte_order = BFD_ENDIAN_BIG; | |
17750 | break; | |
17751 | case DW_END_little: | |
17752 | byte_order = BFD_ENDIAN_LITTLE; | |
17753 | break; | |
17754 | default: | |
17755 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17756 | break; | |
17757 | } | |
17758 | } | |
6ccb9162 UW |
17759 | |
17760 | switch (encoding) | |
c906108c | 17761 | { |
6ccb9162 UW |
17762 | case DW_ATE_address: |
17763 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17764 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17765 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17766 | break; |
17767 | case DW_ATE_boolean: | |
19f392bc | 17768 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17769 | break; |
17770 | case DW_ATE_complex_float: | |
103a685e TT |
17771 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17772 | byte_order); | |
19f392bc | 17773 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17774 | break; |
17775 | case DW_ATE_decimal_float: | |
19f392bc | 17776 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17777 | break; |
17778 | case DW_ATE_float: | |
103a685e | 17779 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17780 | break; |
17781 | case DW_ATE_signed: | |
eb77c9df | 17782 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17783 | break; |
17784 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17785 | if (cu->language == language_fortran |
17786 | && name | |
61012eef | 17787 | && startswith (name, "character(")) |
19f392bc UW |
17788 | type = init_character_type (objfile, bits, 1, name); |
17789 | else | |
eb77c9df | 17790 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17791 | break; |
17792 | case DW_ATE_signed_char: | |
6e70227d | 17793 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17794 | || cu->language == language_pascal |
17795 | || cu->language == language_fortran) | |
19f392bc UW |
17796 | type = init_character_type (objfile, bits, 0, name); |
17797 | else | |
eb77c9df | 17798 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17799 | break; |
17800 | case DW_ATE_unsigned_char: | |
868a0084 | 17801 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17802 | || cu->language == language_pascal |
c44af4eb TT |
17803 | || cu->language == language_fortran |
17804 | || cu->language == language_rust) | |
19f392bc UW |
17805 | type = init_character_type (objfile, bits, 1, name); |
17806 | else | |
eb77c9df | 17807 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17808 | break; |
75079b2b | 17809 | case DW_ATE_UTF: |
53e710ac | 17810 | { |
53e710ac PA |
17811 | if (bits == 16) |
17812 | type = builtin_type (arch)->builtin_char16; | |
17813 | else if (bits == 32) | |
17814 | type = builtin_type (arch)->builtin_char32; | |
17815 | else | |
17816 | { | |
b98664d3 | 17817 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17818 | bits); |
eb77c9df | 17819 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17820 | } |
17821 | return set_die_type (die, type, cu); | |
17822 | } | |
75079b2b TT |
17823 | break; |
17824 | ||
6ccb9162 | 17825 | default: |
b98664d3 | 17826 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17827 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17828 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17829 | break; |
c906108c | 17830 | } |
6ccb9162 | 17831 | |
0114d602 | 17832 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17833 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17834 | |
2b4424c3 TT |
17835 | maybe_set_alignment (cu, die, type); |
17836 | ||
103a685e | 17837 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17838 | |
f792889a | 17839 | return set_die_type (die, type, cu); |
c906108c SS |
17840 | } |
17841 | ||
80180f79 SA |
17842 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17843 | resulting value of the attribute into struct bound_prop. | |
17844 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17845 | ||
17846 | static int | |
17847 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17848 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17849 | struct type *default_type) | |
80180f79 SA |
17850 | { |
17851 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17852 | struct obstack *obstack |
17853 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17854 | |
9a49df9d AB |
17855 | gdb_assert (default_type != NULL); |
17856 | ||
80180f79 SA |
17857 | if (attr == NULL || prop == NULL) |
17858 | return 0; | |
17859 | ||
17860 | if (attr_form_is_block (attr)) | |
17861 | { | |
8d749320 | 17862 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17863 | baton->property_type = default_type; |
80180f79 SA |
17864 | baton->locexpr.per_cu = cu->per_cu; |
17865 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17866 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17867 | switch (attr->name) |
17868 | { | |
17869 | case DW_AT_string_length: | |
17870 | baton->locexpr.is_reference = true; | |
17871 | break; | |
17872 | default: | |
17873 | baton->locexpr.is_reference = false; | |
17874 | break; | |
17875 | } | |
80180f79 SA |
17876 | prop->data.baton = baton; |
17877 | prop->kind = PROP_LOCEXPR; | |
17878 | gdb_assert (prop->data.baton != NULL); | |
17879 | } | |
17880 | else if (attr_form_is_ref (attr)) | |
17881 | { | |
17882 | struct dwarf2_cu *target_cu = cu; | |
17883 | struct die_info *target_die; | |
17884 | struct attribute *target_attr; | |
17885 | ||
17886 | target_die = follow_die_ref (die, attr, &target_cu); | |
17887 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17888 | if (target_attr == NULL) |
17889 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17890 | target_cu); | |
80180f79 SA |
17891 | if (target_attr == NULL) |
17892 | return 0; | |
17893 | ||
df25ebbd | 17894 | switch (target_attr->name) |
80180f79 | 17895 | { |
df25ebbd JB |
17896 | case DW_AT_location: |
17897 | if (attr_form_is_section_offset (target_attr)) | |
17898 | { | |
8d749320 | 17899 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17900 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17901 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17902 | prop->data.baton = baton; | |
17903 | prop->kind = PROP_LOCLIST; | |
17904 | gdb_assert (prop->data.baton != NULL); | |
17905 | } | |
17906 | else if (attr_form_is_block (target_attr)) | |
17907 | { | |
8d749320 | 17908 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17909 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17910 | baton->locexpr.per_cu = cu->per_cu; |
17911 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17912 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17913 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17914 | prop->data.baton = baton; |
17915 | prop->kind = PROP_LOCEXPR; | |
17916 | gdb_assert (prop->data.baton != NULL); | |
17917 | } | |
17918 | else | |
17919 | { | |
17920 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17921 | "dynamic property"); | |
17922 | return 0; | |
17923 | } | |
17924 | break; | |
17925 | case DW_AT_data_member_location: | |
17926 | { | |
17927 | LONGEST offset; | |
17928 | ||
17929 | if (!handle_data_member_location (target_die, target_cu, | |
17930 | &offset)) | |
17931 | return 0; | |
17932 | ||
8d749320 | 17933 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17934 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17935 | target_cu); |
df25ebbd JB |
17936 | baton->offset_info.offset = offset; |
17937 | baton->offset_info.type = die_type (target_die, target_cu); | |
17938 | prop->data.baton = baton; | |
17939 | prop->kind = PROP_ADDR_OFFSET; | |
17940 | break; | |
17941 | } | |
80180f79 SA |
17942 | } |
17943 | } | |
17944 | else if (attr_form_is_constant (attr)) | |
17945 | { | |
17946 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17947 | prop->kind = PROP_CONST; | |
17948 | } | |
17949 | else | |
17950 | { | |
17951 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17952 | dwarf2_name (die, cu)); | |
17953 | return 0; | |
17954 | } | |
17955 | ||
17956 | return 1; | |
17957 | } | |
17958 | ||
11a8b164 AB |
17959 | /* Find an integer type SIZE_IN_BYTES bytes in size and return it. |
17960 | UNSIGNED_P controls if the integer is unsigned or not. */ | |
9a49df9d AB |
17961 | |
17962 | static struct type * | |
11a8b164 AB |
17963 | dwarf2_per_cu_int_type (struct dwarf2_per_cu_data *per_cu, |
17964 | int size_in_bytes, bool unsigned_p) | |
9a49df9d AB |
17965 | { |
17966 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
9a49df9d AB |
17967 | struct type *int_type; |
17968 | ||
17969 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17970 | #define TRY_TYPE(F) \ |
17971 | int_type = (unsigned_p \ | |
17972 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17973 | : objfile_type (objfile)->builtin_ ## F); \ | |
17974 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17975 | return int_type |
17976 | ||
17977 | TRY_TYPE (char); | |
17978 | TRY_TYPE (short); | |
17979 | TRY_TYPE (int); | |
17980 | TRY_TYPE (long); | |
17981 | TRY_TYPE (long_long); | |
17982 | ||
17983 | #undef TRY_TYPE | |
17984 | ||
17985 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17986 | } | |
17987 | ||
11a8b164 AB |
17988 | /* Find an integer type the same size as the address size given in the |
17989 | compilation unit header for PER_CU. UNSIGNED_P controls if the integer | |
17990 | is unsigned or not. */ | |
17991 | ||
17992 | static struct type * | |
17993 | dwarf2_per_cu_addr_sized_int_type (struct dwarf2_per_cu_data *per_cu, | |
17994 | bool unsigned_p) | |
17995 | { | |
17996 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
17997 | return dwarf2_per_cu_int_type (per_cu, addr_size, unsigned_p); | |
17998 | } | |
17999 | ||
b86352cf AB |
18000 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18001 | present (which is valid) then compute the default type based on the | |
18002 | compilation units address size. */ | |
18003 | ||
18004 | static struct type * | |
18005 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18006 | { | |
18007 | struct type *index_type = die_type (die, cu); | |
18008 | ||
18009 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18010 | without specifying a base type. | |
18011 | In that case, the base type must be set to the type of | |
18012 | the lower bound, upper bound or count, in that order, if any of these | |
18013 | three attributes references an object that has a type. | |
18014 | If no base type is found, the Dwarf-2 specifications say that | |
18015 | a signed integer type of size equal to the size of an address should | |
18016 | be used. | |
18017 | For the following C code: `extern char gdb_int [];' | |
18018 | GCC produces an empty range DIE. | |
18019 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18020 | high bound or count are not yet handled by this code. */ | |
18021 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
9a49df9d | 18022 | index_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); |
b86352cf AB |
18023 | |
18024 | return index_type; | |
18025 | } | |
18026 | ||
a02abb62 JB |
18027 | /* Read the given DW_AT_subrange DIE. */ |
18028 | ||
f792889a | 18029 | static struct type * |
a02abb62 JB |
18030 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18031 | { | |
4c9ad8c2 | 18032 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18033 | struct type *range_type; |
18034 | struct attribute *attr; | |
729efb13 | 18035 | struct dynamic_prop low, high; |
4fae6e18 | 18036 | int low_default_is_valid; |
c451ebe5 | 18037 | int high_bound_is_count = 0; |
15d034d0 | 18038 | const char *name; |
d359392f | 18039 | ULONGEST negative_mask; |
e77813c8 | 18040 | |
b86352cf AB |
18041 | orig_base_type = read_subrange_index_type (die, cu); |
18042 | ||
4c9ad8c2 TT |
18043 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18044 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18045 | creating the range type, but we use the result of check_typedef | |
18046 | when examining properties of the type. */ | |
18047 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18048 | |
7e314c57 JK |
18049 | /* The die_type call above may have already set the type for this DIE. */ |
18050 | range_type = get_die_type (die, cu); | |
18051 | if (range_type) | |
18052 | return range_type; | |
18053 | ||
729efb13 SA |
18054 | low.kind = PROP_CONST; |
18055 | high.kind = PROP_CONST; | |
18056 | high.data.const_val = 0; | |
18057 | ||
4fae6e18 JK |
18058 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18059 | omitting DW_AT_lower_bound. */ | |
18060 | switch (cu->language) | |
6e70227d | 18061 | { |
4fae6e18 JK |
18062 | case language_c: |
18063 | case language_cplus: | |
729efb13 | 18064 | low.data.const_val = 0; |
4fae6e18 JK |
18065 | low_default_is_valid = 1; |
18066 | break; | |
18067 | case language_fortran: | |
729efb13 | 18068 | low.data.const_val = 1; |
4fae6e18 JK |
18069 | low_default_is_valid = 1; |
18070 | break; | |
18071 | case language_d: | |
4fae6e18 | 18072 | case language_objc: |
c44af4eb | 18073 | case language_rust: |
729efb13 | 18074 | low.data.const_val = 0; |
4fae6e18 JK |
18075 | low_default_is_valid = (cu->header.version >= 4); |
18076 | break; | |
18077 | case language_ada: | |
18078 | case language_m2: | |
18079 | case language_pascal: | |
729efb13 | 18080 | low.data.const_val = 1; |
4fae6e18 JK |
18081 | low_default_is_valid = (cu->header.version >= 4); |
18082 | break; | |
18083 | default: | |
729efb13 | 18084 | low.data.const_val = 0; |
4fae6e18 JK |
18085 | low_default_is_valid = 0; |
18086 | break; | |
a02abb62 JB |
18087 | } |
18088 | ||
e142c38c | 18089 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18090 | if (attr != nullptr) |
9a49df9d | 18091 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18092 | else if (!low_default_is_valid) |
b98664d3 | 18093 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18094 | "- DIE at %s [in module %s]"), |
18095 | sect_offset_str (die->sect_off), | |
518817b3 | 18096 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 18097 | |
506f5c41 TV |
18098 | struct attribute *attr_ub, *attr_count; |
18099 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18100 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18101 | { |
506f5c41 | 18102 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18103 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18104 | { |
c451ebe5 SA |
18105 | /* If bounds are constant do the final calculation here. */ |
18106 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
18107 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
18108 | else | |
18109 | high_bound_is_count = 1; | |
c2ff108b | 18110 | } |
506f5c41 TV |
18111 | else |
18112 | { | |
18113 | if (attr_ub != NULL) | |
18114 | complaint (_("Unresolved DW_AT_upper_bound " | |
18115 | "- DIE at %s [in module %s]"), | |
18116 | sect_offset_str (die->sect_off), | |
18117 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18118 | if (attr_count != NULL) | |
18119 | complaint (_("Unresolved DW_AT_count " | |
18120 | "- DIE at %s [in module %s]"), | |
18121 | sect_offset_str (die->sect_off), | |
18122 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18123 | } | |
e77813c8 | 18124 | } |
a02abb62 | 18125 | |
4e962e74 TT |
18126 | LONGEST bias = 0; |
18127 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
18128 | if (bias_attr != nullptr && attr_form_is_constant (bias_attr)) | |
18129 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); | |
18130 | ||
dbb9c2b1 JB |
18131 | /* Normally, the DWARF producers are expected to use a signed |
18132 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18133 | But this is unfortunately not always the case, as witnessed | |
18134 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18135 | is used instead. To work around that ambiguity, we treat | |
18136 | the bounds as signed, and thus sign-extend their values, when | |
18137 | the base type is signed. */ | |
6e70227d | 18138 | negative_mask = |
d359392f | 18139 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
18140 | if (low.kind == PROP_CONST |
18141 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
18142 | low.data.const_val |= negative_mask; | |
18143 | if (high.kind == PROP_CONST | |
18144 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
18145 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 18146 | |
5bbd8269 AB |
18147 | /* Check for bit and byte strides. */ |
18148 | struct dynamic_prop byte_stride_prop; | |
18149 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18150 | if (attr_byte_stride != nullptr) | |
18151 | { | |
18152 | struct type *prop_type | |
18153 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
18154 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, | |
18155 | prop_type); | |
18156 | } | |
18157 | ||
18158 | struct dynamic_prop bit_stride_prop; | |
18159 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18160 | if (attr_bit_stride != nullptr) | |
18161 | { | |
18162 | /* It only makes sense to have either a bit or byte stride. */ | |
18163 | if (attr_byte_stride != nullptr) | |
18164 | { | |
18165 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18166 | "- DIE at %s [in module %s]"), | |
18167 | sect_offset_str (die->sect_off), | |
18168 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
18169 | attr_bit_stride = nullptr; | |
18170 | } | |
18171 | else | |
18172 | { | |
18173 | struct type *prop_type | |
18174 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
18175 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, | |
18176 | prop_type); | |
18177 | } | |
18178 | } | |
18179 | ||
18180 | if (attr_byte_stride != nullptr | |
18181 | || attr_bit_stride != nullptr) | |
18182 | { | |
18183 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18184 | struct dynamic_prop *stride | |
18185 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18186 | ||
18187 | range_type | |
18188 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18189 | &high, bias, stride, byte_stride_p); | |
18190 | } | |
18191 | else | |
18192 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18193 | |
c451ebe5 SA |
18194 | if (high_bound_is_count) |
18195 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
18196 | ||
c2ff108b JK |
18197 | /* Ada expects an empty array on no boundary attributes. */ |
18198 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 18199 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18200 | |
39cbfefa DJ |
18201 | name = dwarf2_name (die, cu); |
18202 | if (name) | |
18203 | TYPE_NAME (range_type) = name; | |
6e70227d | 18204 | |
e142c38c | 18205 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18206 | if (attr != nullptr) |
a02abb62 JB |
18207 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
18208 | ||
2b4424c3 TT |
18209 | maybe_set_alignment (cu, die, range_type); |
18210 | ||
7e314c57 JK |
18211 | set_die_type (die, range_type, cu); |
18212 | ||
18213 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18214 | set_descriptive_type (range_type, die, cu); |
18215 | ||
7e314c57 | 18216 | return range_type; |
a02abb62 | 18217 | } |
6e70227d | 18218 | |
f792889a | 18219 | static struct type * |
81a17f79 JB |
18220 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18221 | { | |
18222 | struct type *type; | |
81a17f79 | 18223 | |
518817b3 SM |
18224 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18225 | NULL); | |
0114d602 | 18226 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18227 | |
74a2f8ff | 18228 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18229 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18230 | such a type, we treat it as a stub, and try to resolve it later on, |
18231 | when needed. */ | |
18232 | if (cu->language == language_ada) | |
18233 | TYPE_STUB (type) = 1; | |
18234 | ||
f792889a | 18235 | return set_die_type (die, type, cu); |
81a17f79 | 18236 | } |
a02abb62 | 18237 | |
639d11d3 DC |
18238 | /* Read a single die and all its descendents. Set the die's sibling |
18239 | field to NULL; set other fields in the die correctly, and set all | |
18240 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18241 | location of the info_ptr after reading all of those dies. PARENT | |
18242 | is the parent of the die in question. */ | |
18243 | ||
18244 | static struct die_info * | |
dee91e82 | 18245 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18246 | const gdb_byte *info_ptr, |
18247 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18248 | struct die_info *parent) |
639d11d3 DC |
18249 | { |
18250 | struct die_info *die; | |
d521ce57 | 18251 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18252 | int has_children; |
18253 | ||
bf6af496 | 18254 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18255 | if (die == NULL) |
18256 | { | |
18257 | *new_info_ptr = cur_ptr; | |
18258 | return NULL; | |
18259 | } | |
93311388 | 18260 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18261 | |
18262 | if (has_children) | |
bf6af496 | 18263 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18264 | else |
18265 | { | |
18266 | die->child = NULL; | |
18267 | *new_info_ptr = cur_ptr; | |
18268 | } | |
18269 | ||
18270 | die->sibling = NULL; | |
18271 | die->parent = parent; | |
18272 | return die; | |
18273 | } | |
18274 | ||
18275 | /* Read a die, all of its descendents, and all of its siblings; set | |
18276 | all of the fields of all of the dies correctly. Arguments are as | |
18277 | in read_die_and_children. */ | |
18278 | ||
18279 | static struct die_info * | |
bf6af496 | 18280 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18281 | const gdb_byte *info_ptr, |
18282 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18283 | struct die_info *parent) |
639d11d3 DC |
18284 | { |
18285 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18286 | const gdb_byte *cur_ptr; |
639d11d3 | 18287 | |
c906108c | 18288 | cur_ptr = info_ptr; |
639d11d3 DC |
18289 | first_die = last_sibling = NULL; |
18290 | ||
18291 | while (1) | |
c906108c | 18292 | { |
639d11d3 | 18293 | struct die_info *die |
dee91e82 | 18294 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18295 | |
1d325ec1 | 18296 | if (die == NULL) |
c906108c | 18297 | { |
639d11d3 DC |
18298 | *new_info_ptr = cur_ptr; |
18299 | return first_die; | |
c906108c | 18300 | } |
1d325ec1 DJ |
18301 | |
18302 | if (!first_die) | |
18303 | first_die = die; | |
c906108c | 18304 | else |
1d325ec1 DJ |
18305 | last_sibling->sibling = die; |
18306 | ||
18307 | last_sibling = die; | |
c906108c | 18308 | } |
c906108c SS |
18309 | } |
18310 | ||
bf6af496 DE |
18311 | /* Read a die, all of its descendents, and all of its siblings; set |
18312 | all of the fields of all of the dies correctly. Arguments are as | |
18313 | in read_die_and_children. | |
18314 | This the main entry point for reading a DIE and all its children. */ | |
18315 | ||
18316 | static struct die_info * | |
18317 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18318 | const gdb_byte *info_ptr, |
18319 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18320 | struct die_info *parent) |
18321 | { | |
18322 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18323 | new_info_ptr, parent); | |
18324 | ||
b4f54984 | 18325 | if (dwarf_die_debug) |
bf6af496 DE |
18326 | { |
18327 | fprintf_unfiltered (gdb_stdlog, | |
18328 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18329 | get_section_name (reader->die_section), |
bf6af496 DE |
18330 | (unsigned) (info_ptr - reader->die_section->buffer), |
18331 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18332 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18333 | } |
18334 | ||
18335 | return die; | |
18336 | } | |
18337 | ||
3019eac3 DE |
18338 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18339 | attributes. | |
18340 | The caller is responsible for filling in the extra attributes | |
18341 | and updating (*DIEP)->num_attrs. | |
18342 | Set DIEP to point to a newly allocated die with its information, | |
18343 | except for its child, sibling, and parent fields. | |
18344 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18345 | |
d521ce57 | 18346 | static const gdb_byte * |
3019eac3 | 18347 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18348 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18349 | int *has_children, int num_extra_attrs) |
93311388 | 18350 | { |
b64f50a1 | 18351 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18352 | struct abbrev_info *abbrev; |
18353 | struct die_info *die; | |
18354 | struct dwarf2_cu *cu = reader->cu; | |
18355 | bfd *abfd = reader->abfd; | |
18356 | ||
9c541725 | 18357 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18358 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18359 | info_ptr += bytes_read; | |
18360 | if (!abbrev_number) | |
18361 | { | |
18362 | *diep = NULL; | |
18363 | *has_children = 0; | |
18364 | return info_ptr; | |
18365 | } | |
18366 | ||
685af9cd | 18367 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18368 | if (!abbrev) |
348e048f DE |
18369 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18370 | abbrev_number, | |
18371 | bfd_get_filename (abfd)); | |
18372 | ||
3019eac3 | 18373 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18374 | die->sect_off = sect_off; |
93311388 DE |
18375 | die->tag = abbrev->tag; |
18376 | die->abbrev = abbrev_number; | |
18377 | ||
3019eac3 DE |
18378 | /* Make the result usable. |
18379 | The caller needs to update num_attrs after adding the extra | |
18380 | attributes. */ | |
93311388 DE |
18381 | die->num_attrs = abbrev->num_attrs; |
18382 | ||
18a8505e | 18383 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18384 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18385 | { |
18386 | bool need_reprocess; | |
18387 | info_ptr = | |
18388 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18389 | info_ptr, &need_reprocess); | |
18390 | if (need_reprocess) | |
18391 | indexes_that_need_reprocess.push_back (i); | |
18392 | } | |
18393 | ||
18394 | struct attribute *attr = dwarf2_attr_no_follow (die, DW_AT_str_offsets_base); | |
18395 | if (attr != nullptr) | |
18396 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18397 | |
18a8505e AT |
18398 | auto maybe_addr_base = lookup_addr_base(die); |
18399 | if (maybe_addr_base.has_value ()) | |
18400 | cu->addr_base = *maybe_addr_base; | |
18401 | for (int index : indexes_that_need_reprocess) | |
18402 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 DE |
18403 | *diep = die; |
18404 | *has_children = abbrev->has_children; | |
18405 | return info_ptr; | |
18406 | } | |
18407 | ||
3019eac3 DE |
18408 | /* Read a die and all its attributes. |
18409 | Set DIEP to point to a newly allocated die with its information, | |
18410 | except for its child, sibling, and parent fields. | |
18411 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18412 | ||
d521ce57 | 18413 | static const gdb_byte * |
3019eac3 | 18414 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18415 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18416 | int *has_children) |
18417 | { | |
d521ce57 | 18418 | const gdb_byte *result; |
bf6af496 DE |
18419 | |
18420 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18421 | ||
b4f54984 | 18422 | if (dwarf_die_debug) |
bf6af496 DE |
18423 | { |
18424 | fprintf_unfiltered (gdb_stdlog, | |
18425 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18426 | get_section_name (reader->die_section), |
bf6af496 DE |
18427 | (unsigned) (info_ptr - reader->die_section->buffer), |
18428 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18429 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18430 | } |
18431 | ||
18432 | return result; | |
3019eac3 | 18433 | } |
433df2d4 DE |
18434 | \f |
18435 | /* Abbreviation tables. | |
3019eac3 | 18436 | |
433df2d4 | 18437 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18438 | stored in a separate .debug_abbrev section. Before we read any |
18439 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18440 | in a hash table. */ |
18441 | ||
18442 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18443 | ||
685af9cd TT |
18444 | struct abbrev_info * |
18445 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18446 | { |
18447 | struct abbrev_info *abbrev; | |
18448 | ||
685af9cd | 18449 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18450 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18451 | |
433df2d4 DE |
18452 | return abbrev; |
18453 | } | |
18454 | ||
18455 | /* Add an abbreviation to the table. */ | |
c906108c | 18456 | |
685af9cd TT |
18457 | void |
18458 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18459 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18460 | { |
18461 | unsigned int hash_number; | |
18462 | ||
18463 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18464 | abbrev->next = m_abbrevs[hash_number]; |
18465 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18466 | } |
dee91e82 | 18467 | |
433df2d4 DE |
18468 | /* Look up an abbrev in the table. |
18469 | Returns NULL if the abbrev is not found. */ | |
18470 | ||
685af9cd TT |
18471 | struct abbrev_info * |
18472 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18473 | { |
433df2d4 DE |
18474 | unsigned int hash_number; |
18475 | struct abbrev_info *abbrev; | |
18476 | ||
18477 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18478 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18479 | |
18480 | while (abbrev) | |
18481 | { | |
18482 | if (abbrev->number == abbrev_number) | |
18483 | return abbrev; | |
18484 | abbrev = abbrev->next; | |
18485 | } | |
18486 | return NULL; | |
18487 | } | |
18488 | ||
18489 | /* Read in an abbrev table. */ | |
18490 | ||
685af9cd | 18491 | static abbrev_table_up |
ed2dc618 SM |
18492 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18493 | struct dwarf2_section_info *section, | |
9c541725 | 18494 | sect_offset sect_off) |
433df2d4 DE |
18495 | { |
18496 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18497 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18498 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18499 | struct abbrev_info *cur_abbrev; |
18500 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18501 | unsigned int abbrev_form; |
6dfa2fc2 | 18502 | std::vector<struct attr_abbrev> cur_attrs; |
c906108c | 18503 | |
685af9cd | 18504 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18505 | |
433df2d4 | 18506 | dwarf2_read_section (objfile, section); |
9c541725 | 18507 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18508 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18509 | abbrev_ptr += bytes_read; | |
18510 | ||
0963b4bd | 18511 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18512 | while (abbrev_number) |
18513 | { | |
6dfa2fc2 | 18514 | cur_attrs.clear (); |
685af9cd | 18515 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18516 | |
18517 | /* read in abbrev header */ | |
18518 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18519 | cur_abbrev->tag |
18520 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18521 | abbrev_ptr += bytes_read; |
18522 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18523 | abbrev_ptr += 1; | |
18524 | ||
18525 | /* now read in declarations */ | |
22d2f3ab | 18526 | for (;;) |
c906108c | 18527 | { |
43988095 JK |
18528 | LONGEST implicit_const; |
18529 | ||
22d2f3ab JK |
18530 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18531 | abbrev_ptr += bytes_read; | |
18532 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18533 | abbrev_ptr += bytes_read; | |
43988095 JK |
18534 | if (abbrev_form == DW_FORM_implicit_const) |
18535 | { | |
18536 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18537 | &bytes_read); | |
18538 | abbrev_ptr += bytes_read; | |
18539 | } | |
18540 | else | |
18541 | { | |
18542 | /* Initialize it due to a false compiler warning. */ | |
18543 | implicit_const = -1; | |
18544 | } | |
22d2f3ab JK |
18545 | |
18546 | if (abbrev_name == 0) | |
18547 | break; | |
18548 | ||
6dfa2fc2 TT |
18549 | cur_attrs.emplace_back (); |
18550 | struct attr_abbrev &cur_attr = cur_attrs.back (); | |
18551 | cur_attr.name = (enum dwarf_attribute) abbrev_name; | |
18552 | cur_attr.form = (enum dwarf_form) abbrev_form; | |
18553 | cur_attr.implicit_const = implicit_const; | |
22d2f3ab | 18554 | ++cur_abbrev->num_attrs; |
c906108c SS |
18555 | } |
18556 | ||
8d749320 SM |
18557 | cur_abbrev->attrs = |
18558 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18559 | cur_abbrev->num_attrs); | |
6dfa2fc2 | 18560 | memcpy (cur_abbrev->attrs, cur_attrs.data (), |
f3dd6933 DJ |
18561 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); |
18562 | ||
685af9cd | 18563 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18564 | |
18565 | /* Get next abbreviation. | |
18566 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18567 | always properly terminated with an abbrev number of 0. |
18568 | Exit loop if we encounter an abbreviation which we have | |
18569 | already read (which means we are about to read the abbreviations | |
18570 | for the next compile unit) or if the end of the abbreviation | |
18571 | table is reached. */ | |
433df2d4 | 18572 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18573 | break; |
18574 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18575 | abbrev_ptr += bytes_read; | |
685af9cd | 18576 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18577 | break; |
18578 | } | |
f3dd6933 | 18579 | |
433df2d4 | 18580 | return abbrev_table; |
c906108c SS |
18581 | } |
18582 | ||
72bf9492 DJ |
18583 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18584 | symbol for. */ | |
18585 | ||
18586 | static int | |
18587 | is_type_tag_for_partial (int tag) | |
18588 | { | |
18589 | switch (tag) | |
18590 | { | |
18591 | #if 0 | |
18592 | /* Some types that would be reasonable to generate partial symbols for, | |
18593 | that we don't at present. */ | |
18594 | case DW_TAG_array_type: | |
18595 | case DW_TAG_file_type: | |
18596 | case DW_TAG_ptr_to_member_type: | |
18597 | case DW_TAG_set_type: | |
18598 | case DW_TAG_string_type: | |
18599 | case DW_TAG_subroutine_type: | |
18600 | #endif | |
18601 | case DW_TAG_base_type: | |
18602 | case DW_TAG_class_type: | |
680b30c7 | 18603 | case DW_TAG_interface_type: |
72bf9492 DJ |
18604 | case DW_TAG_enumeration_type: |
18605 | case DW_TAG_structure_type: | |
18606 | case DW_TAG_subrange_type: | |
18607 | case DW_TAG_typedef: | |
18608 | case DW_TAG_union_type: | |
18609 | return 1; | |
18610 | default: | |
18611 | return 0; | |
18612 | } | |
18613 | } | |
18614 | ||
18615 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18616 | ||
18617 | static struct partial_die_info * | |
dee91e82 | 18618 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18619 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18620 | { |
dee91e82 | 18621 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18622 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18623 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18624 | unsigned int bytes_read; |
5afb4e99 | 18625 | unsigned int load_all = 0; |
72bf9492 DJ |
18626 | int nesting_level = 1; |
18627 | ||
18628 | parent_die = NULL; | |
18629 | last_die = NULL; | |
18630 | ||
7adf1e79 DE |
18631 | gdb_assert (cu->per_cu != NULL); |
18632 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18633 | load_all = 1; |
18634 | ||
72bf9492 DJ |
18635 | cu->partial_dies |
18636 | = htab_create_alloc_ex (cu->header.length / 12, | |
18637 | partial_die_hash, | |
18638 | partial_die_eq, | |
18639 | NULL, | |
18640 | &cu->comp_unit_obstack, | |
18641 | hashtab_obstack_allocate, | |
18642 | dummy_obstack_deallocate); | |
18643 | ||
72bf9492 DJ |
18644 | while (1) |
18645 | { | |
685af9cd | 18646 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18647 | |
18648 | /* A NULL abbrev means the end of a series of children. */ | |
18649 | if (abbrev == NULL) | |
18650 | { | |
18651 | if (--nesting_level == 0) | |
cd9983dd YQ |
18652 | return first_die; |
18653 | ||
72bf9492 DJ |
18654 | info_ptr += bytes_read; |
18655 | last_die = parent_die; | |
18656 | parent_die = parent_die->die_parent; | |
18657 | continue; | |
18658 | } | |
18659 | ||
98bfdba5 PA |
18660 | /* Check for template arguments. We never save these; if |
18661 | they're seen, we just mark the parent, and go on our way. */ | |
18662 | if (parent_die != NULL | |
18663 | && cu->language == language_cplus | |
18664 | && (abbrev->tag == DW_TAG_template_type_param | |
18665 | || abbrev->tag == DW_TAG_template_value_param)) | |
18666 | { | |
18667 | parent_die->has_template_arguments = 1; | |
18668 | ||
18669 | if (!load_all) | |
18670 | { | |
18671 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18672 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18673 | continue; |
18674 | } | |
18675 | } | |
18676 | ||
0d99eb77 | 18677 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18678 | Skip their other children. */ |
18679 | if (!load_all | |
18680 | && cu->language == language_cplus | |
18681 | && parent_die != NULL | |
18682 | && parent_die->tag == DW_TAG_subprogram) | |
18683 | { | |
dee91e82 | 18684 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18685 | continue; |
18686 | } | |
18687 | ||
5afb4e99 DJ |
18688 | /* Check whether this DIE is interesting enough to save. Normally |
18689 | we would not be interested in members here, but there may be | |
18690 | later variables referencing them via DW_AT_specification (for | |
18691 | static members). */ | |
18692 | if (!load_all | |
18693 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18694 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18695 | && abbrev->tag != DW_TAG_enumerator |
18696 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18697 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18698 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18699 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18700 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18701 | && abbrev->tag != DW_TAG_module |
95554aad | 18702 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18703 | && abbrev->tag != DW_TAG_imported_unit |
18704 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18705 | { |
18706 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18707 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18708 | continue; |
18709 | } | |
18710 | ||
6f06d47b YQ |
18711 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18712 | abbrev); | |
cd9983dd | 18713 | |
48fbe735 | 18714 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18715 | |
18716 | /* This two-pass algorithm for processing partial symbols has a | |
18717 | high cost in cache pressure. Thus, handle some simple cases | |
18718 | here which cover the majority of C partial symbols. DIEs | |
18719 | which neither have specification tags in them, nor could have | |
18720 | specification tags elsewhere pointing at them, can simply be | |
18721 | processed and discarded. | |
18722 | ||
18723 | This segment is also optional; scan_partial_symbols and | |
18724 | add_partial_symbol will handle these DIEs if we chain | |
18725 | them in normally. When compilers which do not emit large | |
18726 | quantities of duplicate debug information are more common, | |
18727 | this code can probably be removed. */ | |
18728 | ||
18729 | /* Any complete simple types at the top level (pretty much all | |
18730 | of them, for a language without namespaces), can be processed | |
18731 | directly. */ | |
18732 | if (parent_die == NULL | |
cd9983dd YQ |
18733 | && pdi.has_specification == 0 |
18734 | && pdi.is_declaration == 0 | |
18735 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18736 | || pdi.tag == DW_TAG_base_type | |
18737 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18738 | { |
cd9983dd | 18739 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18740 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18741 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18742 | psymbol_placement::STATIC, |
1762568f | 18743 | 0, cu->language, objfile); |
cd9983dd | 18744 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18745 | continue; |
18746 | } | |
18747 | ||
d8228535 JK |
18748 | /* The exception for DW_TAG_typedef with has_children above is |
18749 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18750 | type_name_or_error will error on such types later. |
d8228535 JK |
18751 | |
18752 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18753 | it could not find the child DIEs referenced later, this is checked | |
18754 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18755 | ||
cd9983dd | 18756 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18757 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18758 | "- DIE at %s [in module %s]"), |
cd9983dd | 18759 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18760 | |
72bf9492 DJ |
18761 | /* If we're at the second level, and we're an enumerator, and |
18762 | our parent has no specification (meaning possibly lives in a | |
18763 | namespace elsewhere), then we can add the partial symbol now | |
18764 | instead of queueing it. */ | |
cd9983dd | 18765 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18766 | && parent_die != NULL |
18767 | && parent_die->die_parent == NULL | |
18768 | && parent_die->tag == DW_TAG_enumeration_type | |
18769 | && parent_die->has_specification == 0) | |
18770 | { | |
cd9983dd | 18771 | if (pdi.name == NULL) |
b98664d3 | 18772 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18773 | else if (building_psymtab) |
31edb802 | 18774 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18775 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18776 | cu->language == language_cplus |
75aedd27 TT |
18777 | ? psymbol_placement::GLOBAL |
18778 | : psymbol_placement::STATIC, | |
1762568f | 18779 | 0, cu->language, objfile); |
72bf9492 | 18780 | |
cd9983dd | 18781 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18782 | continue; |
18783 | } | |
18784 | ||
cd9983dd | 18785 | struct partial_die_info *part_die |
6f06d47b | 18786 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18787 | |
72bf9492 DJ |
18788 | /* We'll save this DIE so link it in. */ |
18789 | part_die->die_parent = parent_die; | |
18790 | part_die->die_sibling = NULL; | |
18791 | part_die->die_child = NULL; | |
18792 | ||
18793 | if (last_die && last_die == parent_die) | |
18794 | last_die->die_child = part_die; | |
18795 | else if (last_die) | |
18796 | last_die->die_sibling = part_die; | |
18797 | ||
18798 | last_die = part_die; | |
18799 | ||
18800 | if (first_die == NULL) | |
18801 | first_die = part_die; | |
18802 | ||
18803 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18804 | find interesting need to be in the hash table, because we | |
18805 | also have the parent/sibling/child chains; only those that we | |
18806 | might refer to by offset later during partial symbol reading. | |
18807 | ||
18808 | For now this means things that might have be the target of a | |
18809 | DW_AT_specification, DW_AT_abstract_origin, or | |
18810 | DW_AT_extension. DW_AT_extension will refer only to | |
18811 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18812 | many things under the function DIE, but we do not recurse | |
18813 | into function DIEs during partial symbol reading) and | |
18814 | possibly variables as well; DW_AT_specification refers to | |
18815 | declarations. Declarations ought to have the DW_AT_declaration | |
18816 | flag. It happens that GCC forgets to put it in sometimes, but | |
18817 | only for functions, not for types. | |
18818 | ||
18819 | Adding more things than necessary to the hash table is harmless | |
18820 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18821 | wasted time in find_partial_die, when we reread the compilation |
18822 | unit with load_all_dies set. */ | |
72bf9492 | 18823 | |
5afb4e99 | 18824 | if (load_all |
72929c62 | 18825 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18826 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18827 | || abbrev->tag == DW_TAG_variable |
18828 | || abbrev->tag == DW_TAG_namespace | |
18829 | || part_die->is_declaration) | |
18830 | { | |
18831 | void **slot; | |
18832 | ||
18833 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18834 | to_underlying (part_die->sect_off), |
18835 | INSERT); | |
72bf9492 DJ |
18836 | *slot = part_die; |
18837 | } | |
18838 | ||
72bf9492 | 18839 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18840 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18841 | languages we have to, so that we can get at method physnames |
18842 | to infer fully qualified class names, for DW_AT_specification, | |
18843 | and for C++ template arguments. For C++, we also look one level | |
18844 | inside functions to find template arguments (if the name of the | |
18845 | function does not already contain the template arguments). | |
bc30ff58 | 18846 | |
0a4b0913 AB |
18847 | For Ada and Fortran, we need to scan the children of subprograms |
18848 | and lexical blocks as well because these languages allow the | |
18849 | definition of nested entities that could be interesting for the | |
18850 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18851 | if (last_die->has_children |
5afb4e99 DJ |
18852 | && (load_all |
18853 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18854 | || last_die->tag == DW_TAG_module |
72bf9492 | 18855 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18856 | || (cu->language == language_cplus |
18857 | && last_die->tag == DW_TAG_subprogram | |
18858 | && (last_die->name == NULL | |
18859 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18860 | || (cu->language != language_c |
18861 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18862 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18863 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18864 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18865 | || ((cu->language == language_ada |
18866 | || cu->language == language_fortran) | |
bc30ff58 JB |
18867 | && (last_die->tag == DW_TAG_subprogram |
18868 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18869 | { |
18870 | nesting_level++; | |
18871 | parent_die = last_die; | |
18872 | continue; | |
18873 | } | |
18874 | ||
18875 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18876 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18877 | |
18878 | /* Back to the top, do it again. */ | |
18879 | } | |
18880 | } | |
18881 | ||
6f06d47b YQ |
18882 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18883 | struct abbrev_info *abbrev) | |
18884 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18885 | { | |
18886 | } | |
18887 | ||
35cc7ed7 YQ |
18888 | /* Read a minimal amount of information into the minimal die structure. |
18889 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18890 | |
48fbe735 YQ |
18891 | const gdb_byte * |
18892 | partial_die_info::read (const struct die_reader_specs *reader, | |
18893 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18894 | { |
dee91e82 | 18895 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18896 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18897 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18898 | unsigned int i; |
c5aa993b | 18899 | int has_low_pc_attr = 0; |
c906108c | 18900 | int has_high_pc_attr = 0; |
91da1414 | 18901 | int high_pc_relative = 0; |
c906108c | 18902 | |
18a8505e | 18903 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 18904 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18905 | { |
18a8505e AT |
18906 | bool need_reprocess; |
18907 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
18908 | info_ptr, &need_reprocess); | |
18909 | /* String and address offsets that need to do the reprocessing have | |
18910 | already been read at this point, so there is no need to wait until | |
18911 | the loop terminates to do the reprocessing. */ | |
18912 | if (need_reprocess) | |
18913 | read_attribute_reprocess (reader, &attr_vec[i]); | |
18914 | attribute &attr = attr_vec[i]; | |
c906108c | 18915 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18916 | partial symbol table. */ |
c906108c SS |
18917 | switch (attr.name) |
18918 | { | |
18919 | case DW_AT_name: | |
48fbe735 | 18920 | switch (tag) |
71c25dea TT |
18921 | { |
18922 | case DW_TAG_compile_unit: | |
95554aad | 18923 | case DW_TAG_partial_unit: |
348e048f | 18924 | case DW_TAG_type_unit: |
71c25dea TT |
18925 | /* Compilation units have a DW_AT_name that is a filename, not |
18926 | a source language identifier. */ | |
18927 | case DW_TAG_enumeration_type: | |
18928 | case DW_TAG_enumerator: | |
18929 | /* These tags always have simple identifiers already; no need | |
18930 | to canonicalize them. */ | |
48fbe735 | 18931 | name = DW_STRING (&attr); |
71c25dea TT |
18932 | break; |
18933 | default: | |
48fbe735 YQ |
18934 | { |
18935 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18936 | ||
18937 | name | |
18938 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18939 | &objfile->per_bfd->storage_obstack); | |
18940 | } | |
71c25dea TT |
18941 | break; |
18942 | } | |
c906108c | 18943 | break; |
31ef98ae | 18944 | case DW_AT_linkage_name: |
c906108c | 18945 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18946 | /* Note that both forms of linkage name might appear. We |
18947 | assume they will be the same, and we only store the last | |
18948 | one we see. */ | |
48fbe735 | 18949 | linkage_name = DW_STRING (&attr); |
c906108c SS |
18950 | break; |
18951 | case DW_AT_low_pc: | |
18952 | has_low_pc_attr = 1; | |
48fbe735 | 18953 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18954 | break; |
18955 | case DW_AT_high_pc: | |
18956 | has_high_pc_attr = 1; | |
48fbe735 | 18957 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18958 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18959 | high_pc_relative = 1; | |
c906108c SS |
18960 | break; |
18961 | case DW_AT_location: | |
0963b4bd | 18962 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18963 | if (attr_form_is_block (&attr)) |
18964 | { | |
48fbe735 | 18965 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18966 | } |
3690dd37 | 18967 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18968 | { |
4d3c2250 | 18969 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18970 | } |
18971 | else | |
18972 | { | |
4d3c2250 KB |
18973 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18974 | "partial symbol information"); | |
8e19ed76 | 18975 | } |
c906108c | 18976 | break; |
c906108c | 18977 | case DW_AT_external: |
48fbe735 | 18978 | is_external = DW_UNSND (&attr); |
c906108c SS |
18979 | break; |
18980 | case DW_AT_declaration: | |
48fbe735 | 18981 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18982 | break; |
18983 | case DW_AT_type: | |
48fbe735 | 18984 | has_type = 1; |
c906108c SS |
18985 | break; |
18986 | case DW_AT_abstract_origin: | |
18987 | case DW_AT_specification: | |
72bf9492 | 18988 | case DW_AT_extension: |
48fbe735 YQ |
18989 | has_specification = 1; |
18990 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18991 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18992 | || cu->per_cu->is_dwz); |
c906108c SS |
18993 | break; |
18994 | case DW_AT_sibling: | |
18995 | /* Ignore absolute siblings, they might point outside of | |
18996 | the current compile unit. */ | |
18997 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18998 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18999 | else |
b9502d3f | 19000 | { |
48fbe735 | 19001 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
19002 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
19003 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
19004 | |
19005 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19006 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
19007 | else if (sibling_ptr > reader->buffer_end) |
19008 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 19009 | else |
48fbe735 | 19010 | sibling = sibling_ptr; |
b9502d3f | 19011 | } |
c906108c | 19012 | break; |
fa4028e9 | 19013 | case DW_AT_byte_size: |
48fbe735 | 19014 | has_byte_size = 1; |
fa4028e9 | 19015 | break; |
ff908ebf | 19016 | case DW_AT_const_value: |
48fbe735 | 19017 | has_const_value = 1; |
ff908ebf | 19018 | break; |
68511cec CES |
19019 | case DW_AT_calling_convention: |
19020 | /* DWARF doesn't provide a way to identify a program's source-level | |
19021 | entry point. DW_AT_calling_convention attributes are only meant | |
19022 | to describe functions' calling conventions. | |
19023 | ||
19024 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19025 | Fortran, and before DWARF 4 DW_CC_program was the only |
19026 | piece of debugging information whose definition refers to | |
19027 | a 'main program' at all, several compilers marked Fortran | |
19028 | main programs with DW_CC_program --- even when those | |
19029 | functions use the standard calling conventions. | |
19030 | ||
19031 | Although DWARF now specifies a way to provide this | |
19032 | information, we support this practice for backward | |
19033 | compatibility. */ | |
68511cec | 19034 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19035 | && cu->language == language_fortran) |
48fbe735 | 19036 | main_subprogram = 1; |
68511cec | 19037 | break; |
481860b3 GB |
19038 | case DW_AT_inline: |
19039 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19040 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19041 | may_be_inlined = 1; |
481860b3 | 19042 | break; |
95554aad TT |
19043 | |
19044 | case DW_AT_import: | |
48fbe735 | 19045 | if (tag == DW_TAG_imported_unit) |
36586728 | 19046 | { |
48fbe735 YQ |
19047 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
19048 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
19049 | || cu->per_cu->is_dwz); |
19050 | } | |
95554aad TT |
19051 | break; |
19052 | ||
0c1b455e | 19053 | case DW_AT_main_subprogram: |
48fbe735 | 19054 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19055 | break; |
19056 | ||
05caa1d2 TT |
19057 | case DW_AT_ranges: |
19058 | { | |
19059 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
19060 | but that requires a full DIE, so instead we just | |
19061 | reimplement it. */ | |
19062 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
19063 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
19064 | + (need_ranges_base | |
19065 | ? cu->ranges_base | |
19066 | : 0)); | |
19067 | ||
19068 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19069 | .debug_ranges section. */ | |
19070 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
19071 | nullptr)) | |
19072 | has_pc_info = 1; | |
19073 | } | |
19074 | break; | |
19075 | ||
c906108c SS |
19076 | default: |
19077 | break; | |
19078 | } | |
19079 | } | |
19080 | ||
10d06d82 TT |
19081 | /* For Ada, if both the name and the linkage name appear, we prefer |
19082 | the latter. This lets "catch exception" work better, regardless | |
19083 | of the order in which the name and linkage name were emitted. | |
19084 | Really, though, this is just a workaround for the fact that gdb | |
19085 | doesn't store both the name and the linkage name. */ | |
19086 | if (cu->language == language_ada && linkage_name != nullptr) | |
19087 | name = linkage_name; | |
19088 | ||
91da1414 | 19089 | if (high_pc_relative) |
48fbe735 | 19090 | highpc += lowpc; |
91da1414 | 19091 | |
9373cf26 JK |
19092 | if (has_low_pc_attr && has_high_pc_attr) |
19093 | { | |
19094 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19095 | eliminate duplicate copies of functions and vtables and such. | |
19096 | The linker will arbitrarily choose one and discard the others. | |
19097 | The AT_*_pc values for such functions refer to local labels in | |
19098 | these sections. If the section from that file was discarded, the | |
19099 | labels are not in the output, so the relocs get a value of 0. | |
19100 | If this is a discarded function, mark the pc bounds as invalid, | |
19101 | so that GDB will ignore it. */ | |
48fbe735 | 19102 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 19103 | { |
48fbe735 | 19104 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19105 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 19106 | |
b98664d3 | 19107 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19108 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19109 | paddress (gdbarch, lowpc), |
19110 | sect_offset_str (sect_off), | |
9d8780f0 | 19111 | objfile_name (objfile)); |
9373cf26 JK |
19112 | } |
19113 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19114 | else if (lowpc >= highpc) |
9373cf26 | 19115 | { |
48fbe735 | 19116 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19117 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 19118 | |
b98664d3 | 19119 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19120 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19121 | paddress (gdbarch, lowpc), |
19122 | paddress (gdbarch, highpc), | |
19123 | sect_offset_str (sect_off), | |
9c541725 | 19124 | objfile_name (objfile)); |
9373cf26 JK |
19125 | } |
19126 | else | |
48fbe735 | 19127 | has_pc_info = 1; |
9373cf26 | 19128 | } |
85cbf3d3 | 19129 | |
c906108c SS |
19130 | return info_ptr; |
19131 | } | |
19132 | ||
72bf9492 DJ |
19133 | /* Find a cached partial DIE at OFFSET in CU. */ |
19134 | ||
d590ff25 YQ |
19135 | struct partial_die_info * |
19136 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19137 | { |
19138 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19139 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19140 | |
9a3c8263 | 19141 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19142 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19143 | to_underlying (sect_off))); |
72bf9492 | 19144 | |
72bf9492 DJ |
19145 | return lookup_die; |
19146 | } | |
19147 | ||
348e048f DE |
19148 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19149 | except in the case of .debug_types DIEs which do not reference | |
19150 | outside their CU (they do however referencing other types via | |
55f1336d | 19151 | DW_FORM_ref_sig8). */ |
72bf9492 | 19152 | |
122cf0f2 | 19153 | static const struct cu_partial_die_info |
9c541725 | 19154 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19155 | { |
518817b3 SM |
19156 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19157 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19158 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
19159 | struct dwarf2_per_cu_data *per_cu = NULL; |
19160 | struct partial_die_info *pd = NULL; | |
72bf9492 | 19161 | |
36586728 | 19162 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 19163 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 19164 | { |
d590ff25 | 19165 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19166 | if (pd != NULL) |
fb816e8b | 19167 | return { cu, pd }; |
0d99eb77 DE |
19168 | /* We missed recording what we needed. |
19169 | Load all dies and try again. */ | |
19170 | per_cu = cu->per_cu; | |
5afb4e99 | 19171 | } |
0d99eb77 DE |
19172 | else |
19173 | { | |
19174 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19175 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19176 | { |
9d8780f0 SM |
19177 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19178 | " external reference to offset %s [in module %s].\n"), | |
19179 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19180 | bfd_get_filename (objfile->obfd)); |
19181 | } | |
9c541725 | 19182 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 19183 | dwarf2_per_objfile); |
72bf9492 | 19184 | |
0d99eb77 DE |
19185 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
19186 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 19187 | |
0d99eb77 | 19188 | per_cu->cu->last_used = 0; |
d590ff25 | 19189 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 19190 | } |
5afb4e99 | 19191 | |
dee91e82 DE |
19192 | /* If we didn't find it, and not all dies have been loaded, |
19193 | load them all and try again. */ | |
19194 | ||
5afb4e99 DJ |
19195 | if (pd == NULL && per_cu->load_all_dies == 0) |
19196 | { | |
5afb4e99 | 19197 | per_cu->load_all_dies = 1; |
fd820528 DE |
19198 | |
19199 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19200 | THIS_CU->cu may already be in use. So we can't just free it and | |
19201 | replace its DIEs with the ones we read in. Instead, we leave those | |
19202 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19203 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19204 | set. */ | |
dee91e82 | 19205 | load_partial_comp_unit (per_cu); |
5afb4e99 | 19206 | |
d590ff25 | 19207 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19208 | } |
19209 | ||
19210 | if (pd == NULL) | |
19211 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 19212 | _("could not find partial DIE %s " |
3e43a32a | 19213 | "in cache [from module %s]\n"), |
9d8780f0 | 19214 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 19215 | return { per_cu->cu, pd }; |
72bf9492 DJ |
19216 | } |
19217 | ||
abc72ce4 DE |
19218 | /* See if we can figure out if the class lives in a namespace. We do |
19219 | this by looking for a member function; its demangled name will | |
19220 | contain namespace info, if there is any. */ | |
19221 | ||
19222 | static void | |
19223 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19224 | struct dwarf2_cu *cu) | |
19225 | { | |
19226 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19227 | what template types look like, because the demangler | |
19228 | frequently doesn't give the same name as the debug info. We | |
19229 | could fix this by only using the demangled name to get the | |
19230 | prefix (but see comment in read_structure_type). */ | |
19231 | ||
19232 | struct partial_die_info *real_pdi; | |
19233 | struct partial_die_info *child_pdi; | |
19234 | ||
19235 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19236 | we should not do this. We'll prepend the parent's fully qualified | |
19237 | name when we create the partial symbol. */ | |
19238 | ||
19239 | real_pdi = struct_pdi; | |
19240 | while (real_pdi->has_specification) | |
fb816e8b | 19241 | { |
122cf0f2 AB |
19242 | auto res = find_partial_die (real_pdi->spec_offset, |
19243 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19244 | real_pdi = res.pdi; |
19245 | cu = res.cu; | |
19246 | } | |
abc72ce4 DE |
19247 | |
19248 | if (real_pdi->die_parent != NULL) | |
19249 | return; | |
19250 | ||
19251 | for (child_pdi = struct_pdi->die_child; | |
19252 | child_pdi != NULL; | |
19253 | child_pdi = child_pdi->die_sibling) | |
19254 | { | |
19255 | if (child_pdi->tag == DW_TAG_subprogram | |
19256 | && child_pdi->linkage_name != NULL) | |
19257 | { | |
43816ebc TT |
19258 | gdb::unique_xmalloc_ptr<char> actual_class_name |
19259 | (language_class_name_from_physname (cu->language_defn, | |
19260 | child_pdi->linkage_name)); | |
abc72ce4 DE |
19261 | if (actual_class_name != NULL) |
19262 | { | |
518817b3 | 19263 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19264 | struct_pdi->name |
021887d8 | 19265 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 19266 | actual_class_name.get ()); |
abc72ce4 DE |
19267 | } |
19268 | break; | |
19269 | } | |
19270 | } | |
19271 | } | |
19272 | ||
52356b79 YQ |
19273 | void |
19274 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19275 | { |
abc72ce4 DE |
19276 | /* Once we've fixed up a die, there's no point in doing so again. |
19277 | This also avoids a memory leak if we were to call | |
19278 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19279 | if (fixup_called) |
abc72ce4 DE |
19280 | return; |
19281 | ||
72bf9492 DJ |
19282 | /* If we found a reference attribute and the DIE has no name, try |
19283 | to find a name in the referred to DIE. */ | |
19284 | ||
52356b79 | 19285 | if (name == NULL && has_specification) |
72bf9492 DJ |
19286 | { |
19287 | struct partial_die_info *spec_die; | |
72bf9492 | 19288 | |
122cf0f2 | 19289 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19290 | spec_die = res.pdi; |
19291 | cu = res.cu; | |
72bf9492 | 19292 | |
52356b79 | 19293 | spec_die->fixup (cu); |
72bf9492 DJ |
19294 | |
19295 | if (spec_die->name) | |
19296 | { | |
52356b79 | 19297 | name = spec_die->name; |
72bf9492 DJ |
19298 | |
19299 | /* Copy DW_AT_external attribute if it is set. */ | |
19300 | if (spec_die->is_external) | |
52356b79 | 19301 | is_external = spec_die->is_external; |
72bf9492 DJ |
19302 | } |
19303 | } | |
19304 | ||
19305 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19306 | |
52356b79 YQ |
19307 | if (name == NULL && tag == DW_TAG_namespace) |
19308 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19309 | |
abc72ce4 DE |
19310 | /* If there is no parent die to provide a namespace, and there are |
19311 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19312 | name. */ |
abc72ce4 | 19313 | if (cu->language == language_cplus |
fd5866f6 | 19314 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
19315 | && die_parent == NULL |
19316 | && has_children | |
19317 | && (tag == DW_TAG_class_type | |
19318 | || tag == DW_TAG_structure_type | |
19319 | || tag == DW_TAG_union_type)) | |
19320 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19321 | |
53832f31 TT |
19322 | /* GCC might emit a nameless struct or union that has a linkage |
19323 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19324 | if (name == NULL |
19325 | && (tag == DW_TAG_class_type | |
19326 | || tag == DW_TAG_interface_type | |
19327 | || tag == DW_TAG_structure_type | |
19328 | || tag == DW_TAG_union_type) | |
19329 | && linkage_name != NULL) | |
53832f31 | 19330 | { |
43816ebc TT |
19331 | gdb::unique_xmalloc_ptr<char> demangled |
19332 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19333 | if (demangled != nullptr) | |
53832f31 | 19334 | { |
96408a79 SA |
19335 | const char *base; |
19336 | ||
19337 | /* Strip any leading namespaces/classes, keep only the base name. | |
19338 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19339 | base = strrchr (demangled.get (), ':'); |
19340 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19341 | base++; |
19342 | else | |
43816ebc | 19343 | base = demangled.get (); |
96408a79 | 19344 | |
518817b3 | 19345 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 19346 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
19347 | } |
19348 | } | |
19349 | ||
52356b79 | 19350 | fixup_called = 1; |
72bf9492 DJ |
19351 | } |
19352 | ||
18a8505e AT |
19353 | /* Process the attributes that had to be skipped in the first round. These |
19354 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19355 | They could not have been processed in the first round, because at the time | |
19356 | the values of str_offsets_base or addr_base may not have been known. */ | |
19357 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
19358 | struct attribute *attr) | |
19359 | { | |
19360 | struct dwarf2_cu *cu = reader->cu; | |
19361 | switch (attr->form) | |
19362 | { | |
19363 | case DW_FORM_addrx: | |
19364 | case DW_FORM_GNU_addr_index: | |
19365 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19366 | break; | |
19367 | case DW_FORM_strx: | |
19368 | case DW_FORM_strx1: | |
19369 | case DW_FORM_strx2: | |
19370 | case DW_FORM_strx3: | |
19371 | case DW_FORM_strx4: | |
19372 | case DW_FORM_GNU_str_index: | |
19373 | { | |
19374 | unsigned int str_index = DW_UNSND (attr); | |
19375 | if (reader->dwo_file != NULL) | |
19376 | { | |
19377 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19378 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19379 | } | |
19380 | else | |
19381 | { | |
19382 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19383 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19384 | } | |
19385 | break; | |
19386 | } | |
19387 | default: | |
19388 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19389 | } | |
19390 | } | |
19391 | ||
a8329558 | 19392 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19393 | |
d521ce57 | 19394 | static const gdb_byte * |
dee91e82 DE |
19395 | read_attribute_value (const struct die_reader_specs *reader, |
19396 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19397 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19398 | bool *need_reprocess) | |
c906108c | 19399 | { |
dee91e82 | 19400 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19401 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19402 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19403 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19404 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19405 | bfd *abfd = reader->abfd; |
e7c27a73 | 19406 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19407 | unsigned int bytes_read; |
19408 | struct dwarf_block *blk; | |
18a8505e | 19409 | *need_reprocess = false; |
c906108c | 19410 | |
aead7601 | 19411 | attr->form = (enum dwarf_form) form; |
a8329558 | 19412 | switch (form) |
c906108c | 19413 | { |
c906108c | 19414 | case DW_FORM_ref_addr: |
ae411497 | 19415 | if (cu->header.version == 2) |
4568ecf9 | 19416 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19417 | else |
4568ecf9 DE |
19418 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19419 | &cu->header, &bytes_read); | |
ae411497 TT |
19420 | info_ptr += bytes_read; |
19421 | break; | |
36586728 TT |
19422 | case DW_FORM_GNU_ref_alt: |
19423 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19424 | info_ptr += bytes_read; | |
19425 | break; | |
ae411497 | 19426 | case DW_FORM_addr: |
e7c27a73 | 19427 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19428 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19429 | info_ptr += bytes_read; |
c906108c SS |
19430 | break; |
19431 | case DW_FORM_block2: | |
7b5a2f43 | 19432 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19433 | blk->size = read_2_bytes (abfd, info_ptr); |
19434 | info_ptr += 2; | |
19435 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19436 | info_ptr += blk->size; | |
19437 | DW_BLOCK (attr) = blk; | |
19438 | break; | |
19439 | case DW_FORM_block4: | |
7b5a2f43 | 19440 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19441 | blk->size = read_4_bytes (abfd, info_ptr); |
19442 | info_ptr += 4; | |
19443 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19444 | info_ptr += blk->size; | |
19445 | DW_BLOCK (attr) = blk; | |
19446 | break; | |
19447 | case DW_FORM_data2: | |
19448 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19449 | info_ptr += 2; | |
19450 | break; | |
19451 | case DW_FORM_data4: | |
19452 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19453 | info_ptr += 4; | |
19454 | break; | |
19455 | case DW_FORM_data8: | |
19456 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19457 | info_ptr += 8; | |
19458 | break; | |
0224619f JK |
19459 | case DW_FORM_data16: |
19460 | blk = dwarf_alloc_block (cu); | |
19461 | blk->size = 16; | |
19462 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19463 | info_ptr += 16; | |
19464 | DW_BLOCK (attr) = blk; | |
19465 | break; | |
2dc7f7b3 TT |
19466 | case DW_FORM_sec_offset: |
19467 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19468 | info_ptr += bytes_read; | |
19469 | break; | |
c906108c | 19470 | case DW_FORM_string: |
9b1c24c8 | 19471 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19472 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19473 | info_ptr += bytes_read; |
19474 | break; | |
4bdf3d34 | 19475 | case DW_FORM_strp: |
36586728 TT |
19476 | if (!cu->per_cu->is_dwz) |
19477 | { | |
ed2dc618 SM |
19478 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19479 | abfd, info_ptr, cu_header, | |
36586728 TT |
19480 | &bytes_read); |
19481 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19482 | info_ptr += bytes_read; | |
19483 | break; | |
19484 | } | |
19485 | /* FALLTHROUGH */ | |
43988095 JK |
19486 | case DW_FORM_line_strp: |
19487 | if (!cu->per_cu->is_dwz) | |
19488 | { | |
ed2dc618 SM |
19489 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19490 | abfd, info_ptr, | |
43988095 JK |
19491 | cu_header, &bytes_read); |
19492 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19493 | info_ptr += bytes_read; | |
19494 | break; | |
19495 | } | |
19496 | /* FALLTHROUGH */ | |
36586728 TT |
19497 | case DW_FORM_GNU_strp_alt: |
19498 | { | |
ed2dc618 | 19499 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19500 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19501 | &bytes_read); | |
19502 | ||
ed2dc618 SM |
19503 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19504 | dwz, str_offset); | |
36586728 TT |
19505 | DW_STRING_IS_CANONICAL (attr) = 0; |
19506 | info_ptr += bytes_read; | |
19507 | } | |
4bdf3d34 | 19508 | break; |
2dc7f7b3 | 19509 | case DW_FORM_exprloc: |
c906108c | 19510 | case DW_FORM_block: |
7b5a2f43 | 19511 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19512 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19513 | info_ptr += bytes_read; | |
19514 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19515 | info_ptr += blk->size; | |
19516 | DW_BLOCK (attr) = blk; | |
19517 | break; | |
19518 | case DW_FORM_block1: | |
7b5a2f43 | 19519 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19520 | blk->size = read_1_byte (abfd, info_ptr); |
19521 | info_ptr += 1; | |
19522 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19523 | info_ptr += blk->size; | |
19524 | DW_BLOCK (attr) = blk; | |
19525 | break; | |
19526 | case DW_FORM_data1: | |
19527 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19528 | info_ptr += 1; | |
19529 | break; | |
19530 | case DW_FORM_flag: | |
19531 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19532 | info_ptr += 1; | |
19533 | break; | |
2dc7f7b3 TT |
19534 | case DW_FORM_flag_present: |
19535 | DW_UNSND (attr) = 1; | |
19536 | break; | |
c906108c SS |
19537 | case DW_FORM_sdata: |
19538 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19539 | info_ptr += bytes_read; | |
19540 | break; | |
19541 | case DW_FORM_udata: | |
18a8505e | 19542 | case DW_FORM_rnglistx: |
c906108c SS |
19543 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19544 | info_ptr += bytes_read; | |
19545 | break; | |
19546 | case DW_FORM_ref1: | |
9c541725 | 19547 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19548 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19549 | info_ptr += 1; |
19550 | break; | |
19551 | case DW_FORM_ref2: | |
9c541725 | 19552 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19553 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19554 | info_ptr += 2; |
19555 | break; | |
19556 | case DW_FORM_ref4: | |
9c541725 | 19557 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19558 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19559 | info_ptr += 4; |
19560 | break; | |
613e1657 | 19561 | case DW_FORM_ref8: |
9c541725 | 19562 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19563 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19564 | info_ptr += 8; |
19565 | break; | |
55f1336d | 19566 | case DW_FORM_ref_sig8: |
ac9ec31b | 19567 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19568 | info_ptr += 8; |
19569 | break; | |
c906108c | 19570 | case DW_FORM_ref_udata: |
9c541725 | 19571 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19572 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19573 | info_ptr += bytes_read; |
19574 | break; | |
c906108c | 19575 | case DW_FORM_indirect: |
a8329558 KW |
19576 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19577 | info_ptr += bytes_read; | |
43988095 JK |
19578 | if (form == DW_FORM_implicit_const) |
19579 | { | |
19580 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19581 | info_ptr += bytes_read; | |
19582 | } | |
19583 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19584 | info_ptr, need_reprocess); |
43988095 JK |
19585 | break; |
19586 | case DW_FORM_implicit_const: | |
19587 | DW_SND (attr) = implicit_const; | |
a8329558 | 19588 | break; |
336d760d | 19589 | case DW_FORM_addrx: |
3019eac3 | 19590 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19591 | *need_reprocess = true; |
19592 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19593 | info_ptr += bytes_read; |
19594 | break; | |
cf532bd1 | 19595 | case DW_FORM_strx: |
15f18d14 AT |
19596 | case DW_FORM_strx1: |
19597 | case DW_FORM_strx2: | |
19598 | case DW_FORM_strx3: | |
19599 | case DW_FORM_strx4: | |
3019eac3 | 19600 | case DW_FORM_GNU_str_index: |
3019eac3 | 19601 | { |
15f18d14 AT |
19602 | ULONGEST str_index; |
19603 | if (form == DW_FORM_strx1) | |
19604 | { | |
19605 | str_index = read_1_byte (abfd, info_ptr); | |
19606 | info_ptr += 1; | |
19607 | } | |
19608 | else if (form == DW_FORM_strx2) | |
19609 | { | |
19610 | str_index = read_2_bytes (abfd, info_ptr); | |
19611 | info_ptr += 2; | |
19612 | } | |
19613 | else if (form == DW_FORM_strx3) | |
19614 | { | |
19615 | str_index = read_3_bytes (abfd, info_ptr); | |
19616 | info_ptr += 3; | |
19617 | } | |
19618 | else if (form == DW_FORM_strx4) | |
19619 | { | |
19620 | str_index = read_4_bytes (abfd, info_ptr); | |
19621 | info_ptr += 4; | |
19622 | } | |
19623 | else | |
19624 | { | |
19625 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19626 | info_ptr += bytes_read; | |
19627 | } | |
18a8505e AT |
19628 | *need_reprocess = true; |
19629 | DW_UNSND (attr) = str_index; | |
19630 | } | |
3019eac3 | 19631 | break; |
c906108c | 19632 | default: |
8a3fe4f8 | 19633 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19634 | dwarf_form_name (form), |
19635 | bfd_get_filename (abfd)); | |
c906108c | 19636 | } |
28e94949 | 19637 | |
36586728 | 19638 | /* Super hack. */ |
7771576e | 19639 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19640 | attr->form = DW_FORM_GNU_ref_alt; |
19641 | ||
28e94949 JB |
19642 | /* We have seen instances where the compiler tried to emit a byte |
19643 | size attribute of -1 which ended up being encoded as an unsigned | |
19644 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19645 | an object of this size seems pretty unlikely so we can relatively | |
19646 | safely treat these cases as if the size attribute was invalid and | |
19647 | treat them as zero by default. */ | |
19648 | if (attr->name == DW_AT_byte_size | |
19649 | && form == DW_FORM_data4 | |
19650 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19651 | { |
19652 | complaint | |
b98664d3 | 19653 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19654 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19655 | DW_UNSND (attr) = 0; |
19656 | } | |
28e94949 | 19657 | |
c906108c SS |
19658 | return info_ptr; |
19659 | } | |
19660 | ||
a8329558 KW |
19661 | /* Read an attribute described by an abbreviated attribute. */ |
19662 | ||
d521ce57 | 19663 | static const gdb_byte * |
dee91e82 DE |
19664 | read_attribute (const struct die_reader_specs *reader, |
19665 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19666 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19667 | { |
19668 | attr->name = abbrev->name; | |
43988095 | 19669 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19670 | abbrev->implicit_const, info_ptr, |
19671 | need_reprocess); | |
a8329558 KW |
19672 | } |
19673 | ||
c906108c | 19674 | static CORE_ADDR |
d521ce57 | 19675 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19676 | unsigned int *bytes_read) |
c906108c | 19677 | { |
e7c27a73 | 19678 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19679 | CORE_ADDR retval = 0; |
19680 | ||
107d2387 | 19681 | if (cu_header->signed_addr_p) |
c906108c | 19682 | { |
107d2387 AC |
19683 | switch (cu_header->addr_size) |
19684 | { | |
19685 | case 2: | |
fe1b8b76 | 19686 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19687 | break; |
19688 | case 4: | |
fe1b8b76 | 19689 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19690 | break; |
19691 | case 8: | |
fe1b8b76 | 19692 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19693 | break; |
19694 | default: | |
8e65ff28 | 19695 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19696 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19697 | bfd_get_filename (abfd)); |
107d2387 AC |
19698 | } |
19699 | } | |
19700 | else | |
19701 | { | |
19702 | switch (cu_header->addr_size) | |
19703 | { | |
19704 | case 2: | |
fe1b8b76 | 19705 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19706 | break; |
19707 | case 4: | |
fe1b8b76 | 19708 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19709 | break; |
19710 | case 8: | |
fe1b8b76 | 19711 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19712 | break; |
19713 | default: | |
8e65ff28 | 19714 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19715 | _("read_address: bad switch, " |
19716 | "unsigned [in module %s]"), | |
659b0389 | 19717 | bfd_get_filename (abfd)); |
107d2387 | 19718 | } |
c906108c | 19719 | } |
64367e0a | 19720 | |
107d2387 AC |
19721 | *bytes_read = cu_header->addr_size; |
19722 | return retval; | |
c906108c SS |
19723 | } |
19724 | ||
f7ef9339 | 19725 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19726 | specification allows the initial length to take up either 4 bytes |
19727 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19728 | bytes describe the length and all offsets will be 8 bytes in length | |
19729 | instead of 4. | |
19730 | ||
f7ef9339 KB |
19731 | An older, non-standard 64-bit format is also handled by this |
19732 | function. The older format in question stores the initial length | |
19733 | as an 8-byte quantity without an escape value. Lengths greater | |
19734 | than 2^32 aren't very common which means that the initial 4 bytes | |
19735 | is almost always zero. Since a length value of zero doesn't make | |
19736 | sense for the 32-bit format, this initial zero can be considered to | |
19737 | be an escape value which indicates the presence of the older 64-bit | |
19738 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19739 | greater than 4GB. If it becomes necessary to handle lengths |
19740 | somewhat larger than 4GB, we could allow other small values (such | |
19741 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19742 | escape values indicating the presence of the old format. | |
f7ef9339 | 19743 | |
917c78fc MK |
19744 | The value returned via bytes_read should be used to increment the |
19745 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19746 | |
613e1657 KB |
19747 | [ Note: read_initial_length() and read_offset() are based on the |
19748 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19749 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19750 | from: |
19751 | ||
f7ef9339 | 19752 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19753 | |
613e1657 KB |
19754 | This document is only a draft and is subject to change. (So beware.) |
19755 | ||
f7ef9339 | 19756 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19757 | determined empirically by examining 64-bit ELF files produced by |
19758 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19759 | |
19760 | - Kevin, July 16, 2002 | |
613e1657 KB |
19761 | ] */ |
19762 | ||
19763 | static LONGEST | |
d521ce57 | 19764 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19765 | { |
fe1b8b76 | 19766 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19767 | |
dd373385 | 19768 | if (length == 0xffffffff) |
613e1657 | 19769 | { |
fe1b8b76 | 19770 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19771 | *bytes_read = 12; |
613e1657 | 19772 | } |
dd373385 | 19773 | else if (length == 0) |
f7ef9339 | 19774 | { |
dd373385 | 19775 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19776 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19777 | *bytes_read = 8; |
f7ef9339 | 19778 | } |
613e1657 KB |
19779 | else |
19780 | { | |
19781 | *bytes_read = 4; | |
613e1657 KB |
19782 | } |
19783 | ||
c764a876 DE |
19784 | return length; |
19785 | } | |
dd373385 | 19786 | |
c764a876 DE |
19787 | /* Cover function for read_initial_length. |
19788 | Returns the length of the object at BUF, and stores the size of the | |
19789 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19790 | *OFFSET_SIZE. | |
19791 | If the initial length size is not equivalent to that specified in | |
19792 | CU_HEADER then issue a complaint. | |
19793 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19794 | |
c764a876 | 19795 | static LONGEST |
d521ce57 | 19796 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19797 | const struct comp_unit_head *cu_header, |
19798 | unsigned int *bytes_read, | |
19799 | unsigned int *offset_size) | |
19800 | { | |
19801 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19802 | ||
19803 | gdb_assert (cu_header->initial_length_size == 4 | |
19804 | || cu_header->initial_length_size == 8 | |
19805 | || cu_header->initial_length_size == 12); | |
19806 | ||
19807 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19808 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19809 | |
c764a876 | 19810 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19811 | return length; |
613e1657 KB |
19812 | } |
19813 | ||
19814 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19815 | given by cu_header->offset_size. */ |
613e1657 KB |
19816 | |
19817 | static LONGEST | |
d521ce57 TT |
19818 | read_offset (bfd *abfd, const gdb_byte *buf, |
19819 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19820 | unsigned int *bytes_read) |
c764a876 DE |
19821 | { |
19822 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19823 | |
c764a876 DE |
19824 | *bytes_read = cu_header->offset_size; |
19825 | return offset; | |
19826 | } | |
19827 | ||
19828 | /* Read an offset from the data stream. */ | |
19829 | ||
19830 | static LONGEST | |
d521ce57 | 19831 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19832 | { |
19833 | LONGEST retval = 0; | |
19834 | ||
c764a876 | 19835 | switch (offset_size) |
613e1657 KB |
19836 | { |
19837 | case 4: | |
fe1b8b76 | 19838 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19839 | break; |
19840 | case 8: | |
fe1b8b76 | 19841 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19842 | break; |
19843 | default: | |
8e65ff28 | 19844 | internal_error (__FILE__, __LINE__, |
c764a876 | 19845 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19846 | bfd_get_filename (abfd)); |
613e1657 KB |
19847 | } |
19848 | ||
917c78fc | 19849 | return retval; |
613e1657 KB |
19850 | } |
19851 | ||
d521ce57 TT |
19852 | static const gdb_byte * |
19853 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19854 | { |
19855 | /* If the size of a host char is 8 bits, we can return a pointer | |
19856 | to the buffer, otherwise we have to copy the data to a buffer | |
19857 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19858 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19859 | return buf; |
c906108c SS |
19860 | } |
19861 | ||
d521ce57 TT |
19862 | static const char * |
19863 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19864 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19865 | { |
19866 | /* If the size of a host char is 8 bits, we can return a pointer | |
19867 | to the string, otherwise we have to copy the string to a buffer | |
19868 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19869 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19870 | if (*buf == '\0') |
19871 | { | |
19872 | *bytes_read_ptr = 1; | |
19873 | return NULL; | |
19874 | } | |
d521ce57 TT |
19875 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19876 | return (const char *) buf; | |
4bdf3d34 JJ |
19877 | } |
19878 | ||
43988095 JK |
19879 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19880 | reporting strings FORM_NAME and SECT_NAME. */ | |
19881 | ||
d521ce57 | 19882 | static const char * |
ed2dc618 SM |
19883 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19884 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19885 | struct dwarf2_section_info *sect, |
19886 | const char *form_name, | |
19887 | const char *sect_name) | |
19888 | { | |
ed2dc618 | 19889 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19890 | if (sect->buffer == NULL) |
19891 | error (_("%s used without %s section [in module %s]"), | |
19892 | form_name, sect_name, bfd_get_filename (abfd)); | |
19893 | if (str_offset >= sect->size) | |
19894 | error (_("%s pointing outside of %s section [in module %s]"), | |
19895 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19896 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19897 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19898 | return NULL; |
43988095 JK |
19899 | return (const char *) (sect->buffer + str_offset); |
19900 | } | |
19901 | ||
19902 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19903 | ||
19904 | static const char * | |
ed2dc618 SM |
19905 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19906 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19907 | { |
ed2dc618 SM |
19908 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19909 | abfd, str_offset, | |
43988095 JK |
19910 | &dwarf2_per_objfile->str, |
19911 | "DW_FORM_strp", ".debug_str"); | |
19912 | } | |
19913 | ||
19914 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19915 | ||
19916 | static const char * | |
ed2dc618 SM |
19917 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19918 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19919 | { |
ed2dc618 SM |
19920 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19921 | abfd, str_offset, | |
43988095 JK |
19922 | &dwarf2_per_objfile->line_str, |
19923 | "DW_FORM_line_strp", | |
19924 | ".debug_line_str"); | |
c906108c SS |
19925 | } |
19926 | ||
36586728 TT |
19927 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19928 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19929 | the string consists of a single NUL byte, return NULL; otherwise | |
19930 | return a pointer to the string. */ | |
19931 | ||
d521ce57 | 19932 | static const char * |
ed2dc618 SM |
19933 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19934 | LONGEST str_offset) | |
36586728 | 19935 | { |
ed2dc618 | 19936 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19937 | |
19938 | if (dwz->str.buffer == NULL) | |
19939 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19940 | "section [in module %s]"), | |
00f93c44 | 19941 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19942 | if (str_offset >= dwz->str.size) |
19943 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19944 | ".debug_str section [in module %s]"), | |
00f93c44 | 19945 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19946 | gdb_assert (HOST_CHAR_BIT == 8); |
19947 | if (dwz->str.buffer[str_offset] == '\0') | |
19948 | return NULL; | |
d521ce57 | 19949 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19950 | } |
19951 | ||
43988095 JK |
19952 | /* Return pointer to string at .debug_str offset as read from BUF. |
19953 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19954 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19955 | ||
d521ce57 | 19956 | static const char * |
ed2dc618 SM |
19957 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19958 | const gdb_byte *buf, | |
cf2c3c16 TT |
19959 | const struct comp_unit_head *cu_header, |
19960 | unsigned int *bytes_read_ptr) | |
19961 | { | |
19962 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19963 | ||
ed2dc618 | 19964 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19965 | } |
19966 | ||
43988095 JK |
19967 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19968 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19969 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19970 | ||
19971 | static const char * | |
ed2dc618 SM |
19972 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19973 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19974 | const struct comp_unit_head *cu_header, |
19975 | unsigned int *bytes_read_ptr) | |
19976 | { | |
19977 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19978 | ||
ed2dc618 SM |
19979 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19980 | str_offset); | |
43988095 JK |
19981 | } |
19982 | ||
3019eac3 | 19983 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19984 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19985 | ADDR_SIZE is the size of addresses from the CU header. */ |
19986 | ||
19987 | static CORE_ADDR | |
ed2dc618 | 19988 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19989 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19990 | int addr_size) | |
3019eac3 DE |
19991 | { |
19992 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19993 | bfd *abfd = objfile->obfd; | |
19994 | const gdb_byte *info_ptr; | |
18a8505e | 19995 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 DE |
19996 | |
19997 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19998 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19999 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 20000 | objfile_name (objfile)); |
18a8505e AT |
20001 | if (addr_base_or_zero + addr_index * addr_size |
20002 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
20003 | error (_("DW_FORM_addr_index pointing outside of " |
20004 | ".debug_addr section [in module %s]"), | |
4262abfb | 20005 | objfile_name (objfile)); |
3019eac3 | 20006 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 20007 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
20008 | if (addr_size == 4) |
20009 | return bfd_get_32 (abfd, info_ptr); | |
20010 | else | |
20011 | return bfd_get_64 (abfd, info_ptr); | |
20012 | } | |
20013 | ||
20014 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20015 | ||
20016 | static CORE_ADDR | |
20017 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20018 | { | |
518817b3 SM |
20019 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
20020 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
20021 | } |
20022 | ||
20023 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20024 | ||
20025 | static CORE_ADDR | |
d521ce57 | 20026 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20027 | unsigned int *bytes_read) |
20028 | { | |
518817b3 | 20029 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
20030 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20031 | ||
20032 | return read_addr_index (cu, addr_index); | |
20033 | } | |
20034 | ||
3019eac3 DE |
20035 | /* Given an index in .debug_addr, fetch the value. |
20036 | NOTE: This can be called during dwarf expression evaluation, | |
20037 | long after the debug information has been read, and thus per_cu->cu | |
20038 | may no longer exist. */ | |
20039 | ||
20040 | CORE_ADDR | |
20041 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
20042 | unsigned int addr_index) | |
20043 | { | |
ed2dc618 | 20044 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 20045 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 20046 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20047 | int addr_size; |
20048 | ||
3019eac3 DE |
20049 | /* We need addr_base and addr_size. |
20050 | If we don't have PER_CU->cu, we have to get it. | |
20051 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20052 | which at this point doesn't seem justified: it's not clear how frequently | |
20053 | it would get used and it would increase the size of every PER_CU. | |
20054 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20055 | so we're not in uncharted territory here. | |
20056 | Alas we need to be a bit more complicated as addr_base is contained | |
20057 | in the DIE. | |
20058 | ||
20059 | We don't need to read the entire CU(/TU). | |
20060 | We just need the header and top level die. | |
a1b64ce1 | 20061 | |
3019eac3 | 20062 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20063 | For now we skip this optimization. */ |
3019eac3 DE |
20064 | |
20065 | if (cu != NULL) | |
20066 | { | |
20067 | addr_base = cu->addr_base; | |
20068 | addr_size = cu->header.addr_size; | |
20069 | } | |
20070 | else | |
20071 | { | |
c0ab21c2 TT |
20072 | cutu_reader reader (per_cu, NULL, 0, 0, false); |
20073 | addr_base = reader.cu->addr_base; | |
20074 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20075 | } |
20076 | ||
ed2dc618 SM |
20077 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
20078 | addr_size); | |
3019eac3 DE |
20079 | } |
20080 | ||
18a8505e AT |
20081 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20082 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20083 | DWO file. */ | |
3019eac3 | 20084 | |
d521ce57 | 20085 | static const char * |
18a8505e AT |
20086 | read_str_index (struct dwarf2_cu *cu, |
20087 | struct dwarf2_section_info *str_section, | |
20088 | struct dwarf2_section_info *str_offsets_section, | |
20089 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20090 | { |
518817b3 SM |
20091 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20092 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20093 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 20094 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20095 | bfd *abfd = objfile->obfd; |
d521ce57 | 20096 | const gdb_byte *info_ptr; |
3019eac3 | 20097 | ULONGEST str_offset; |
cf532bd1 | 20098 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20099 | |
73869dc2 DE |
20100 | dwarf2_read_section (objfile, str_section); |
20101 | dwarf2_read_section (objfile, str_offsets_section); | |
20102 | if (str_section->buffer == NULL) | |
18a8505e | 20103 | error (_("%s used without %s section" |
9d8780f0 | 20104 | " in CU at offset %s [in module %s]"), |
18a8505e AT |
20105 | form_name, get_section_name (str_section), |
20106 | sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20107 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20108 | error (_("%s used without %s section" |
9d8780f0 | 20109 | " in CU at offset %s [in module %s]"), |
18a8505e AT |
20110 | form_name, get_section_name (str_section), |
20111 | sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20112 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20113 | + str_offsets_base |
3019eac3 DE |
20114 | + str_index * cu->header.offset_size); |
20115 | if (cu->header.offset_size == 4) | |
20116 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20117 | else | |
20118 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20119 | if (str_offset >= str_section->size) |
57d63ce2 | 20120 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20121 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20122 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20123 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20124 | } |
20125 | ||
18a8505e AT |
20126 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20127 | ||
20128 | static const char * | |
20129 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20130 | { | |
20131 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20132 | ? reader->cu->header.addr_size : 0; | |
20133 | return read_str_index (reader->cu, | |
20134 | &reader->dwo_file->sections.str, | |
20135 | &reader->dwo_file->sections.str_offsets, | |
20136 | str_offsets_base, str_index); | |
20137 | } | |
20138 | ||
20139 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20140 | ||
20141 | static const char * | |
20142 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20143 | { | |
20144 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
20145 | const char *objf_name = objfile_name (objfile); | |
20146 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20147 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20148 | ||
20149 | if (!cu->str_offsets_base.has_value ()) | |
20150 | error (_("%s used in Fission stub without %s" | |
20151 | " in CU at offset 0x%lx [in module %s]"), | |
20152 | form_name, str_offsets_attr_name, | |
20153 | (long) cu->header.offset_size, objf_name); | |
20154 | ||
20155 | return read_str_index (cu, | |
20156 | &cu->per_cu->dwarf2_per_objfile->str, | |
20157 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
20158 | *cu->str_offsets_base, str_index); | |
20159 | } | |
20160 | ||
3019eac3 DE |
20161 | /* Return the length of an LEB128 number in BUF. */ |
20162 | ||
20163 | static int | |
20164 | leb128_size (const gdb_byte *buf) | |
20165 | { | |
20166 | const gdb_byte *begin = buf; | |
20167 | gdb_byte byte; | |
20168 | ||
20169 | while (1) | |
20170 | { | |
20171 | byte = *buf++; | |
20172 | if ((byte & 128) == 0) | |
20173 | return buf - begin; | |
20174 | } | |
20175 | } | |
20176 | ||
c906108c | 20177 | static void |
e142c38c | 20178 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20179 | { |
20180 | switch (lang) | |
20181 | { | |
20182 | case DW_LANG_C89: | |
76bee0cc | 20183 | case DW_LANG_C99: |
0cfd832f | 20184 | case DW_LANG_C11: |
c906108c | 20185 | case DW_LANG_C: |
d1be3247 | 20186 | case DW_LANG_UPC: |
e142c38c | 20187 | cu->language = language_c; |
c906108c | 20188 | break; |
9c37b5ae | 20189 | case DW_LANG_Java: |
c906108c | 20190 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20191 | case DW_LANG_C_plus_plus_11: |
20192 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20193 | cu->language = language_cplus; |
c906108c | 20194 | break; |
6aecb9c2 JB |
20195 | case DW_LANG_D: |
20196 | cu->language = language_d; | |
20197 | break; | |
c906108c SS |
20198 | case DW_LANG_Fortran77: |
20199 | case DW_LANG_Fortran90: | |
b21b22e0 | 20200 | case DW_LANG_Fortran95: |
f7de9aab MW |
20201 | case DW_LANG_Fortran03: |
20202 | case DW_LANG_Fortran08: | |
e142c38c | 20203 | cu->language = language_fortran; |
c906108c | 20204 | break; |
a766d390 DE |
20205 | case DW_LANG_Go: |
20206 | cu->language = language_go; | |
20207 | break; | |
c906108c | 20208 | case DW_LANG_Mips_Assembler: |
e142c38c | 20209 | cu->language = language_asm; |
c906108c SS |
20210 | break; |
20211 | case DW_LANG_Ada83: | |
8aaf0b47 | 20212 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20213 | cu->language = language_ada; |
20214 | break; | |
72019c9c GM |
20215 | case DW_LANG_Modula2: |
20216 | cu->language = language_m2; | |
20217 | break; | |
fe8e67fd PM |
20218 | case DW_LANG_Pascal83: |
20219 | cu->language = language_pascal; | |
20220 | break; | |
22566fbd DJ |
20221 | case DW_LANG_ObjC: |
20222 | cu->language = language_objc; | |
20223 | break; | |
c44af4eb TT |
20224 | case DW_LANG_Rust: |
20225 | case DW_LANG_Rust_old: | |
20226 | cu->language = language_rust; | |
20227 | break; | |
c906108c SS |
20228 | case DW_LANG_Cobol74: |
20229 | case DW_LANG_Cobol85: | |
c906108c | 20230 | default: |
e142c38c | 20231 | cu->language = language_minimal; |
c906108c SS |
20232 | break; |
20233 | } | |
e142c38c | 20234 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20235 | } |
20236 | ||
20237 | /* Return the named attribute or NULL if not there. */ | |
20238 | ||
20239 | static struct attribute * | |
e142c38c | 20240 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20241 | { |
a48e046c | 20242 | for (;;) |
c906108c | 20243 | { |
a48e046c TT |
20244 | unsigned int i; |
20245 | struct attribute *spec = NULL; | |
20246 | ||
20247 | for (i = 0; i < die->num_attrs; ++i) | |
20248 | { | |
20249 | if (die->attrs[i].name == name) | |
20250 | return &die->attrs[i]; | |
20251 | if (die->attrs[i].name == DW_AT_specification | |
20252 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20253 | spec = &die->attrs[i]; | |
20254 | } | |
20255 | ||
20256 | if (!spec) | |
20257 | break; | |
c906108c | 20258 | |
f2f0e013 | 20259 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20260 | } |
c5aa993b | 20261 | |
c906108c SS |
20262 | return NULL; |
20263 | } | |
20264 | ||
348e048f DE |
20265 | /* Return the named attribute or NULL if not there, |
20266 | but do not follow DW_AT_specification, etc. | |
20267 | This is for use in contexts where we're reading .debug_types dies. | |
20268 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20269 | back up the chain, and we want to go down. */ | |
20270 | ||
20271 | static struct attribute * | |
45e58e77 | 20272 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20273 | { |
20274 | unsigned int i; | |
20275 | ||
20276 | for (i = 0; i < die->num_attrs; ++i) | |
20277 | if (die->attrs[i].name == name) | |
20278 | return &die->attrs[i]; | |
20279 | ||
20280 | return NULL; | |
20281 | } | |
20282 | ||
7d45c7c3 KB |
20283 | /* Return the string associated with a string-typed attribute, or NULL if it |
20284 | is either not found or is of an incorrect type. */ | |
20285 | ||
20286 | static const char * | |
20287 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20288 | { | |
20289 | struct attribute *attr; | |
20290 | const char *str = NULL; | |
20291 | ||
20292 | attr = dwarf2_attr (die, name, cu); | |
20293 | ||
20294 | if (attr != NULL) | |
20295 | { | |
43988095 | 20296 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 20297 | || attr->form == DW_FORM_string |
cf532bd1 | 20298 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
20299 | || attr->form == DW_FORM_strx1 |
20300 | || attr->form == DW_FORM_strx2 | |
20301 | || attr->form == DW_FORM_strx3 | |
20302 | || attr->form == DW_FORM_strx4 | |
b3340438 | 20303 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 20304 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20305 | str = DW_STRING (attr); |
20306 | else | |
b98664d3 | 20307 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20308 | "DIE at %s in module %s"), |
20309 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20310 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20311 | } |
20312 | ||
20313 | return str; | |
20314 | } | |
20315 | ||
a084a2a6 | 20316 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20317 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20318 | static const char * |
20319 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20320 | { | |
20321 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20322 | if (dwo_name == nullptr) | |
20323 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20324 | return dwo_name; | |
20325 | } | |
20326 | ||
05cf31d1 JB |
20327 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20328 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20329 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20330 | |
20331 | static int | |
20332 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20333 | { | |
20334 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20335 | ||
20336 | return (attr && DW_UNSND (attr)); | |
20337 | } | |
20338 | ||
3ca72b44 | 20339 | static int |
e142c38c | 20340 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20341 | { |
05cf31d1 JB |
20342 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20343 | which value is non-zero. However, we have to be careful with | |
20344 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20345 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20346 | end up accidently finding a declaration attribute that belongs | |
20347 | to a different DIE referenced by the specification attribute, | |
20348 | even though the given DIE does not have a declaration attribute. */ | |
20349 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20350 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20351 | } |
20352 | ||
63d06c5c | 20353 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20354 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20355 | containing the return value on output. If there is no |
20356 | specification, but there is an abstract origin, that is | |
20357 | returned. */ | |
63d06c5c DC |
20358 | |
20359 | static struct die_info * | |
f2f0e013 | 20360 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20361 | { |
f2f0e013 DJ |
20362 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20363 | *spec_cu); | |
63d06c5c | 20364 | |
edb3359d DJ |
20365 | if (spec_attr == NULL) |
20366 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20367 | ||
63d06c5c DC |
20368 | if (spec_attr == NULL) |
20369 | return NULL; | |
20370 | else | |
f2f0e013 | 20371 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20372 | } |
c906108c | 20373 | |
527f3840 JK |
20374 | /* Stub for free_line_header to match void * callback types. */ |
20375 | ||
20376 | static void | |
20377 | free_line_header_voidp (void *arg) | |
20378 | { | |
9a3c8263 | 20379 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20380 | |
fff8551c | 20381 | delete lh; |
527f3840 JK |
20382 | } |
20383 | ||
fff8551c PA |
20384 | void |
20385 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20386 | { |
27e0867f | 20387 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
20388 | { |
20389 | size_t new_size; | |
20390 | if (version >= 5) | |
20391 | new_size = m_include_dirs.size (); | |
20392 | else | |
20393 | new_size = m_include_dirs.size () + 1; | |
20394 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", | |
20395 | new_size, include_dir); | |
20396 | } | |
20397 | m_include_dirs.push_back (include_dir); | |
debd256d | 20398 | } |
6e70227d | 20399 | |
fff8551c PA |
20400 | void |
20401 | line_header::add_file_name (const char *name, | |
ecfb656c | 20402 | dir_index d_index, |
fff8551c PA |
20403 | unsigned int mod_time, |
20404 | unsigned int length) | |
debd256d | 20405 | { |
27e0867f | 20406 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
20407 | { |
20408 | size_t new_size; | |
20409 | if (version >= 5) | |
20410 | new_size = file_names_size (); | |
20411 | else | |
20412 | new_size = file_names_size () + 1; | |
20413 | fprintf_unfiltered (gdb_stdlog, "Adding file %zu: %s\n", | |
20414 | new_size, name); | |
20415 | } | |
20416 | m_file_names.emplace_back (name, d_index, mod_time, length); | |
debd256d | 20417 | } |
6e70227d | 20418 | |
83769d0b | 20419 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20420 | |
20421 | static struct dwarf2_section_info * | |
20422 | get_debug_line_section (struct dwarf2_cu *cu) | |
20423 | { | |
20424 | struct dwarf2_section_info *section; | |
518817b3 SM |
20425 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20426 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20427 | |
20428 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20429 | DWO file. */ | |
20430 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20431 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20432 | else if (cu->per_cu->is_dwz) | |
20433 | { | |
ed2dc618 | 20434 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20435 | |
20436 | section = &dwz->line; | |
20437 | } | |
20438 | else | |
20439 | section = &dwarf2_per_objfile->line; | |
20440 | ||
20441 | return section; | |
20442 | } | |
20443 | ||
43988095 JK |
20444 | /* Read directory or file name entry format, starting with byte of |
20445 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20446 | entries count and the entries themselves in the described entry | |
20447 | format. */ | |
20448 | ||
20449 | static void | |
ed2dc618 SM |
20450 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20451 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20452 | struct line_header *lh, |
20453 | const struct comp_unit_head *cu_header, | |
20454 | void (*callback) (struct line_header *lh, | |
20455 | const char *name, | |
ecfb656c | 20456 | dir_index d_index, |
43988095 JK |
20457 | unsigned int mod_time, |
20458 | unsigned int length)) | |
20459 | { | |
20460 | gdb_byte format_count, formati; | |
20461 | ULONGEST data_count, datai; | |
20462 | const gdb_byte *buf = *bufp; | |
20463 | const gdb_byte *format_header_data; | |
43988095 JK |
20464 | unsigned int bytes_read; |
20465 | ||
20466 | format_count = read_1_byte (abfd, buf); | |
20467 | buf += 1; | |
20468 | format_header_data = buf; | |
20469 | for (formati = 0; formati < format_count; formati++) | |
20470 | { | |
20471 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20472 | buf += bytes_read; | |
20473 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20474 | buf += bytes_read; | |
20475 | } | |
20476 | ||
20477 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20478 | buf += bytes_read; | |
20479 | for (datai = 0; datai < data_count; datai++) | |
20480 | { | |
20481 | const gdb_byte *format = format_header_data; | |
20482 | struct file_entry fe; | |
20483 | ||
43988095 JK |
20484 | for (formati = 0; formati < format_count; formati++) |
20485 | { | |
ecfb656c | 20486 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20487 | format += bytes_read; |
43988095 | 20488 | |
ecfb656c | 20489 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20490 | format += bytes_read; |
ecfb656c PA |
20491 | |
20492 | gdb::optional<const char *> string; | |
20493 | gdb::optional<unsigned int> uint; | |
20494 | ||
43988095 JK |
20495 | switch (form) |
20496 | { | |
20497 | case DW_FORM_string: | |
ecfb656c | 20498 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20499 | buf += bytes_read; |
20500 | break; | |
20501 | ||
20502 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20503 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20504 | abfd, buf, | |
ecfb656c PA |
20505 | cu_header, |
20506 | &bytes_read)); | |
43988095 JK |
20507 | buf += bytes_read; |
20508 | break; | |
20509 | ||
20510 | case DW_FORM_data1: | |
ecfb656c | 20511 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20512 | buf += 1; |
20513 | break; | |
20514 | ||
20515 | case DW_FORM_data2: | |
ecfb656c | 20516 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20517 | buf += 2; |
20518 | break; | |
20519 | ||
20520 | case DW_FORM_data4: | |
ecfb656c | 20521 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20522 | buf += 4; |
20523 | break; | |
20524 | ||
20525 | case DW_FORM_data8: | |
ecfb656c | 20526 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20527 | buf += 8; |
20528 | break; | |
20529 | ||
7ba99d21 AT |
20530 | case DW_FORM_data16: |
20531 | /* This is used for MD5, but file_entry does not record MD5s. */ | |
20532 | buf += 16; | |
20533 | break; | |
20534 | ||
43988095 | 20535 | case DW_FORM_udata: |
ecfb656c | 20536 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20537 | buf += bytes_read; |
20538 | break; | |
20539 | ||
20540 | case DW_FORM_block: | |
20541 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20542 | current GDB. */ | |
20543 | break; | |
20544 | } | |
ecfb656c PA |
20545 | |
20546 | switch (content_type) | |
20547 | { | |
20548 | case DW_LNCT_path: | |
20549 | if (string.has_value ()) | |
20550 | fe.name = *string; | |
20551 | break; | |
20552 | case DW_LNCT_directory_index: | |
20553 | if (uint.has_value ()) | |
20554 | fe.d_index = (dir_index) *uint; | |
20555 | break; | |
20556 | case DW_LNCT_timestamp: | |
20557 | if (uint.has_value ()) | |
20558 | fe.mod_time = *uint; | |
20559 | break; | |
20560 | case DW_LNCT_size: | |
20561 | if (uint.has_value ()) | |
20562 | fe.length = *uint; | |
20563 | break; | |
20564 | case DW_LNCT_MD5: | |
20565 | break; | |
20566 | default: | |
b98664d3 | 20567 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20568 | pulongest (content_type)); |
20569 | } | |
43988095 JK |
20570 | } |
20571 | ||
ecfb656c | 20572 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20573 | } |
20574 | ||
20575 | *bufp = buf; | |
20576 | } | |
20577 | ||
debd256d | 20578 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20579 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20580 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20581 | Returns NULL if there is a problem reading the header, e.g., if it |
20582 | has a version we don't understand. | |
debd256d JB |
20583 | |
20584 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20585 | the returned object point into the dwarf line section buffer, |
20586 | and must not be freed. */ | |
ae2de4f8 | 20587 | |
fff8551c | 20588 | static line_header_up |
9c541725 | 20589 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20590 | { |
d521ce57 | 20591 | const gdb_byte *line_ptr; |
c764a876 | 20592 | unsigned int bytes_read, offset_size; |
debd256d | 20593 | int i; |
d521ce57 | 20594 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20595 | struct dwarf2_section_info *section; |
20596 | bfd *abfd; | |
518817b3 SM |
20597 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20598 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20599 | |
36586728 | 20600 | section = get_debug_line_section (cu); |
3019eac3 DE |
20601 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20602 | if (section->buffer == NULL) | |
debd256d | 20603 | { |
3019eac3 | 20604 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20605 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20606 | else |
b98664d3 | 20607 | complaint (_("missing .debug_line section")); |
debd256d JB |
20608 | return 0; |
20609 | } | |
20610 | ||
fceca515 DE |
20611 | /* We can't do this until we know the section is non-empty. |
20612 | Only then do we know we have such a section. */ | |
a32a8923 | 20613 | abfd = get_section_bfd_owner (section); |
fceca515 | 20614 | |
a738430d MK |
20615 | /* Make sure that at least there's room for the total_length field. |
20616 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20617 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20618 | { |
4d3c2250 | 20619 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20620 | return 0; |
20621 | } | |
20622 | ||
fff8551c | 20623 | line_header_up lh (new line_header ()); |
debd256d | 20624 | |
9c541725 | 20625 | lh->sect_off = sect_off; |
527f3840 JK |
20626 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20627 | ||
9c541725 | 20628 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20629 | |
a738430d | 20630 | /* Read in the header. */ |
6e70227d | 20631 | lh->total_length = |
c764a876 DE |
20632 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20633 | &bytes_read, &offset_size); | |
debd256d | 20634 | line_ptr += bytes_read; |
7ba99d21 AT |
20635 | |
20636 | const gdb_byte *start_here = line_ptr; | |
20637 | ||
3019eac3 | 20638 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20639 | { |
4d3c2250 | 20640 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20641 | return 0; |
20642 | } | |
7ba99d21 | 20643 | lh->statement_program_end = start_here + lh->total_length; |
debd256d JB |
20644 | lh->version = read_2_bytes (abfd, line_ptr); |
20645 | line_ptr += 2; | |
43988095 | 20646 | if (lh->version > 5) |
cd366ee8 DE |
20647 | { |
20648 | /* This is a version we don't understand. The format could have | |
20649 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20650 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20651 | return NULL; |
20652 | } | |
43988095 JK |
20653 | if (lh->version >= 5) |
20654 | { | |
20655 | gdb_byte segment_selector_size; | |
20656 | ||
20657 | /* Skip address size. */ | |
20658 | read_1_byte (abfd, line_ptr); | |
20659 | line_ptr += 1; | |
20660 | ||
20661 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20662 | line_ptr += 1; | |
20663 | if (segment_selector_size != 0) | |
20664 | { | |
b98664d3 | 20665 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20666 | "in .debug_line section"), |
20667 | segment_selector_size); | |
20668 | return NULL; | |
20669 | } | |
20670 | } | |
c764a876 DE |
20671 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20672 | line_ptr += offset_size; | |
7ba99d21 | 20673 | lh->statement_program_start = line_ptr + lh->header_length; |
debd256d JB |
20674 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20675 | line_ptr += 1; | |
2dc7f7b3 TT |
20676 | if (lh->version >= 4) |
20677 | { | |
20678 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20679 | line_ptr += 1; | |
20680 | } | |
20681 | else | |
20682 | lh->maximum_ops_per_instruction = 1; | |
20683 | ||
20684 | if (lh->maximum_ops_per_instruction == 0) | |
20685 | { | |
20686 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20687 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20688 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20689 | } |
20690 | ||
debd256d JB |
20691 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20692 | line_ptr += 1; | |
20693 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20694 | line_ptr += 1; | |
20695 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20696 | line_ptr += 1; | |
20697 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20698 | line_ptr += 1; | |
fff8551c | 20699 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20700 | |
20701 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20702 | for (i = 1; i < lh->opcode_base; ++i) | |
20703 | { | |
20704 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20705 | line_ptr += 1; | |
20706 | } | |
20707 | ||
43988095 | 20708 | if (lh->version >= 5) |
debd256d | 20709 | { |
43988095 | 20710 | /* Read directory table. */ |
ed2dc618 SM |
20711 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20712 | &cu->header, | |
b926417a | 20713 | [] (struct line_header *header, const char *name, |
ecfb656c | 20714 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20715 | unsigned int length) |
20716 | { | |
b926417a | 20717 | header->add_include_dir (name); |
fff8551c | 20718 | }); |
debd256d | 20719 | |
43988095 | 20720 | /* Read file name table. */ |
ed2dc618 SM |
20721 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20722 | &cu->header, | |
b926417a | 20723 | [] (struct line_header *header, const char *name, |
ecfb656c | 20724 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20725 | unsigned int length) |
20726 | { | |
b926417a | 20727 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20728 | }); |
43988095 JK |
20729 | } |
20730 | else | |
debd256d | 20731 | { |
43988095 JK |
20732 | /* Read directory table. */ |
20733 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20734 | { | |
20735 | line_ptr += bytes_read; | |
fff8551c | 20736 | lh->add_include_dir (cur_dir); |
43988095 | 20737 | } |
debd256d JB |
20738 | line_ptr += bytes_read; |
20739 | ||
43988095 JK |
20740 | /* Read file name table. */ |
20741 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20742 | { | |
ecfb656c PA |
20743 | unsigned int mod_time, length; |
20744 | dir_index d_index; | |
43988095 JK |
20745 | |
20746 | line_ptr += bytes_read; | |
ecfb656c | 20747 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20748 | line_ptr += bytes_read; |
20749 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20750 | line_ptr += bytes_read; | |
20751 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20752 | line_ptr += bytes_read; | |
20753 | ||
ecfb656c | 20754 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20755 | } |
20756 | line_ptr += bytes_read; | |
debd256d | 20757 | } |
debd256d | 20758 | |
3019eac3 | 20759 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20760 | complaint (_("line number info header doesn't " |
3e43a32a | 20761 | "fit in `.debug_line' section")); |
debd256d | 20762 | |
debd256d JB |
20763 | return lh; |
20764 | } | |
c906108c | 20765 | |
c6da4cef | 20766 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20767 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20768 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20769 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20770 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20771 | |
d521ce57 | 20772 | static const char * |
7ba99d21 | 20773 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20774 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20775 | const char *comp_dir, |
20776 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20777 | { |
d521ce57 TT |
20778 | const char *include_name = fe.name; |
20779 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20780 | const char *pst_filename; |
c6da4cef DE |
20781 | int file_is_pst; |
20782 | ||
8c43009f | 20783 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20784 | |
c89b44cd | 20785 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20786 | if (!IS_ABSOLUTE_PATH (include_name) |
20787 | && (dir_name != NULL || comp_dir != NULL)) | |
20788 | { | |
20789 | /* Avoid creating a duplicate psymtab for PST. | |
20790 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20791 | Before we do the comparison, however, we need to account | |
20792 | for DIR_NAME and COMP_DIR. | |
20793 | First prepend dir_name (if non-NULL). If we still don't | |
20794 | have an absolute path prepend comp_dir (if non-NULL). | |
20795 | However, the directory we record in the include-file's | |
20796 | psymtab does not contain COMP_DIR (to match the | |
20797 | corresponding symtab(s)). | |
20798 | ||
20799 | Example: | |
20800 | ||
20801 | bash$ cd /tmp | |
20802 | bash$ gcc -g ./hello.c | |
20803 | include_name = "hello.c" | |
20804 | dir_name = "." | |
20805 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20806 | DW_AT_name = "./hello.c" |
20807 | ||
20808 | */ | |
c6da4cef DE |
20809 | |
20810 | if (dir_name != NULL) | |
20811 | { | |
c89b44cd TT |
20812 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20813 | include_name, (char *) NULL)); | |
20814 | include_name = name_holder->get (); | |
c6da4cef | 20815 | include_name_to_compare = include_name; |
c6da4cef DE |
20816 | } |
20817 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20818 | { | |
c89b44cd TT |
20819 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20820 | include_name, (char *) NULL)); | |
20821 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20822 | } |
20823 | } | |
20824 | ||
20825 | pst_filename = pst->filename; | |
c89b44cd | 20826 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20827 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20828 | { | |
c89b44cd TT |
20829 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20830 | pst_filename, (char *) NULL)); | |
20831 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20832 | } |
20833 | ||
1e3fad37 | 20834 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20835 | |
c6da4cef DE |
20836 | if (file_is_pst) |
20837 | return NULL; | |
20838 | return include_name; | |
20839 | } | |
20840 | ||
d9b3de22 DE |
20841 | /* State machine to track the state of the line number program. */ |
20842 | ||
6f77053d | 20843 | class lnp_state_machine |
d9b3de22 | 20844 | { |
6f77053d PA |
20845 | public: |
20846 | /* Initialize a machine state for the start of a line number | |
20847 | program. */ | |
804d2729 TT |
20848 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20849 | bool record_lines_p); | |
6f77053d | 20850 | |
8c43009f PA |
20851 | file_entry *current_file () |
20852 | { | |
20853 | /* lh->file_names is 0-based, but the file name numbers in the | |
20854 | statement program are 1-based. */ | |
6f77053d PA |
20855 | return m_line_header->file_name_at (m_file); |
20856 | } | |
20857 | ||
20858 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20859 | we're processing the end of a sequence. */ | |
20860 | void record_line (bool end_sequence); | |
20861 | ||
7ab6656f OJ |
20862 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20863 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20864 | void check_line_address (struct dwarf2_cu *cu, |
20865 | const gdb_byte *line_ptr, | |
7ab6656f | 20866 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20867 | |
20868 | void handle_set_discriminator (unsigned int discriminator) | |
20869 | { | |
20870 | m_discriminator = discriminator; | |
20871 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20872 | } | |
20873 | ||
20874 | /* Handle DW_LNE_set_address. */ | |
20875 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20876 | { | |
20877 | m_op_index = 0; | |
20878 | address += baseaddr; | |
20879 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20880 | } | |
20881 | ||
20882 | /* Handle DW_LNS_advance_pc. */ | |
20883 | void handle_advance_pc (CORE_ADDR adjust); | |
20884 | ||
20885 | /* Handle a special opcode. */ | |
20886 | void handle_special_opcode (unsigned char op_code); | |
20887 | ||
20888 | /* Handle DW_LNS_advance_line. */ | |
20889 | void handle_advance_line (int line_delta) | |
20890 | { | |
20891 | advance_line (line_delta); | |
20892 | } | |
20893 | ||
20894 | /* Handle DW_LNS_set_file. */ | |
20895 | void handle_set_file (file_name_index file); | |
20896 | ||
20897 | /* Handle DW_LNS_negate_stmt. */ | |
20898 | void handle_negate_stmt () | |
20899 | { | |
20900 | m_is_stmt = !m_is_stmt; | |
20901 | } | |
20902 | ||
20903 | /* Handle DW_LNS_const_add_pc. */ | |
20904 | void handle_const_add_pc (); | |
20905 | ||
20906 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20907 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20908 | { | |
20909 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20910 | m_op_index = 0; | |
20911 | } | |
20912 | ||
20913 | /* Handle DW_LNS_copy. */ | |
20914 | void handle_copy () | |
20915 | { | |
20916 | record_line (false); | |
20917 | m_discriminator = 0; | |
20918 | } | |
20919 | ||
20920 | /* Handle DW_LNE_end_sequence. */ | |
20921 | void handle_end_sequence () | |
20922 | { | |
804d2729 | 20923 | m_currently_recording_lines = true; |
6f77053d PA |
20924 | } |
20925 | ||
20926 | private: | |
20927 | /* Advance the line by LINE_DELTA. */ | |
20928 | void advance_line (int line_delta) | |
20929 | { | |
20930 | m_line += line_delta; | |
20931 | ||
20932 | if (line_delta != 0) | |
20933 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20934 | } |
20935 | ||
804d2729 TT |
20936 | struct dwarf2_cu *m_cu; |
20937 | ||
6f77053d PA |
20938 | gdbarch *m_gdbarch; |
20939 | ||
20940 | /* True if we're recording lines. | |
20941 | Otherwise we're building partial symtabs and are just interested in | |
20942 | finding include files mentioned by the line number program. */ | |
20943 | bool m_record_lines_p; | |
20944 | ||
8c43009f | 20945 | /* The line number header. */ |
6f77053d | 20946 | line_header *m_line_header; |
8c43009f | 20947 | |
6f77053d PA |
20948 | /* These are part of the standard DWARF line number state machine, |
20949 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20950 | |
6f77053d | 20951 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20952 | /* The line table index of the current file. */ |
20953 | file_name_index m_file = 1; | |
6f77053d PA |
20954 | unsigned int m_line = 1; |
20955 | ||
20956 | /* These are initialized in the constructor. */ | |
20957 | ||
20958 | CORE_ADDR m_address; | |
20959 | bool m_is_stmt; | |
20960 | unsigned int m_discriminator; | |
d9b3de22 DE |
20961 | |
20962 | /* Additional bits of state we need to track. */ | |
20963 | ||
20964 | /* The last file that we called dwarf2_start_subfile for. | |
20965 | This is only used for TLLs. */ | |
6f77053d | 20966 | unsigned int m_last_file = 0; |
d9b3de22 | 20967 | /* The last file a line number was recorded for. */ |
6f77053d | 20968 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20969 | |
804d2729 TT |
20970 | /* When true, record the lines we decode. */ |
20971 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20972 | |
20973 | /* The last line number that was recorded, used to coalesce | |
20974 | consecutive entries for the same line. This can happen, for | |
20975 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20976 | unsigned int m_last_line = 0; |
20977 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20978 | }; |
d9b3de22 | 20979 | |
6f77053d PA |
20980 | void |
20981 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20982 | { | |
20983 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20984 | / m_line_header->maximum_ops_per_instruction) | |
20985 | * m_line_header->minimum_instruction_length); | |
20986 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20987 | m_op_index = ((m_op_index + adjust) | |
20988 | % m_line_header->maximum_ops_per_instruction); | |
20989 | } | |
d9b3de22 | 20990 | |
6f77053d PA |
20991 | void |
20992 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20993 | { |
6f77053d PA |
20994 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20995 | CORE_ADDR addr_adj = (((m_op_index | |
20996 | + (adj_opcode / m_line_header->line_range)) | |
20997 | / m_line_header->maximum_ops_per_instruction) | |
20998 | * m_line_header->minimum_instruction_length); | |
20999 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21000 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
21001 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 21002 | |
6f77053d PA |
21003 | int line_delta = (m_line_header->line_base |
21004 | + (adj_opcode % m_line_header->line_range)); | |
21005 | advance_line (line_delta); | |
21006 | record_line (false); | |
21007 | m_discriminator = 0; | |
21008 | } | |
d9b3de22 | 21009 | |
6f77053d PA |
21010 | void |
21011 | lnp_state_machine::handle_set_file (file_name_index file) | |
21012 | { | |
21013 | m_file = file; | |
21014 | ||
21015 | const file_entry *fe = current_file (); | |
21016 | if (fe == NULL) | |
21017 | dwarf2_debug_line_missing_file_complaint (); | |
21018 | else if (m_record_lines_p) | |
21019 | { | |
21020 | const char *dir = fe->include_dir (m_line_header); | |
21021 | ||
c24bdb02 | 21022 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21023 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21024 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21025 | } |
21026 | } | |
21027 | ||
21028 | void | |
21029 | lnp_state_machine::handle_const_add_pc () | |
21030 | { | |
21031 | CORE_ADDR adjust | |
21032 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21033 | ||
21034 | CORE_ADDR addr_adj | |
21035 | = (((m_op_index + adjust) | |
21036 | / m_line_header->maximum_ops_per_instruction) | |
21037 | * m_line_header->minimum_instruction_length); | |
21038 | ||
21039 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21040 | m_op_index = ((m_op_index + adjust) | |
21041 | % m_line_header->maximum_ops_per_instruction); | |
21042 | } | |
d9b3de22 | 21043 | |
a05a36a5 DE |
21044 | /* Return non-zero if we should add LINE to the line number table. |
21045 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21046 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21047 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21048 | had a non-zero discriminator. | |
21049 | ||
21050 | We have to be careful in the presence of discriminators. | |
21051 | E.g., for this line: | |
21052 | ||
21053 | for (i = 0; i < 100000; i++); | |
21054 | ||
21055 | clang can emit four line number entries for that one line, | |
21056 | each with a different discriminator. | |
21057 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21058 | ||
21059 | However, we want gdb to coalesce all four entries into one. | |
21060 | Otherwise the user could stepi into the middle of the line and | |
21061 | gdb would get confused about whether the pc really was in the | |
21062 | middle of the line. | |
21063 | ||
21064 | Things are further complicated by the fact that two consecutive | |
21065 | line number entries for the same line is a heuristic used by gcc | |
21066 | to denote the end of the prologue. So we can't just discard duplicate | |
21067 | entries, we have to be selective about it. The heuristic we use is | |
21068 | that we only collapse consecutive entries for the same line if at least | |
21069 | one of those entries has a non-zero discriminator. PR 17276. | |
21070 | ||
21071 | Note: Addresses in the line number state machine can never go backwards | |
21072 | within one sequence, thus this coalescing is ok. */ | |
21073 | ||
21074 | static int | |
804d2729 TT |
21075 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21076 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21077 | int line_has_non_zero_discriminator, |
21078 | struct subfile *last_subfile) | |
21079 | { | |
c24bdb02 | 21080 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21081 | return 1; |
21082 | if (line != last_line) | |
21083 | return 1; | |
21084 | /* Same line for the same file that we've seen already. | |
21085 | As a last check, for pr 17276, only record the line if the line | |
21086 | has never had a non-zero discriminator. */ | |
21087 | if (!line_has_non_zero_discriminator) | |
21088 | return 1; | |
21089 | return 0; | |
21090 | } | |
21091 | ||
804d2729 TT |
21092 | /* Use the CU's builder to record line number LINE beginning at |
21093 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21094 | |
21095 | static void | |
d9b3de22 DE |
21096 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
21097 | unsigned int line, CORE_ADDR address, | |
804d2729 | 21098 | struct dwarf2_cu *cu) |
252a6764 DE |
21099 | { |
21100 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21101 | ||
27e0867f DE |
21102 | if (dwarf_line_debug) |
21103 | { | |
21104 | fprintf_unfiltered (gdb_stdlog, | |
21105 | "Recording line %u, file %s, address %s\n", | |
21106 | line, lbasename (subfile->name), | |
21107 | paddress (gdbarch, address)); | |
21108 | } | |
21109 | ||
804d2729 | 21110 | if (cu != nullptr) |
c24bdb02 | 21111 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
21112 | } |
21113 | ||
21114 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21115 | Mark the end of a set of line number records. | |
d9b3de22 | 21116 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21117 | If SUBFILE is NULL the request is ignored. */ |
21118 | ||
21119 | static void | |
21120 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21121 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21122 | { |
27e0867f DE |
21123 | if (subfile == NULL) |
21124 | return; | |
21125 | ||
21126 | if (dwarf_line_debug) | |
21127 | { | |
21128 | fprintf_unfiltered (gdb_stdlog, | |
21129 | "Finishing current line, file %s, address %s\n", | |
21130 | lbasename (subfile->name), | |
21131 | paddress (gdbarch, address)); | |
21132 | } | |
21133 | ||
804d2729 | 21134 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
21135 | } |
21136 | ||
6f77053d PA |
21137 | void |
21138 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21139 | { |
d9b3de22 DE |
21140 | if (dwarf_line_debug) |
21141 | { | |
21142 | fprintf_unfiltered (gdb_stdlog, | |
21143 | "Processing actual line %u: file %u," | |
94a72be7 | 21144 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21145 | m_line, m_file, |
6f77053d | 21146 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21147 | m_is_stmt, m_discriminator, |
21148 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21149 | } |
21150 | ||
6f77053d | 21151 | file_entry *fe = current_file (); |
8c43009f PA |
21152 | |
21153 | if (fe == NULL) | |
d9b3de22 DE |
21154 | dwarf2_debug_line_missing_file_complaint (); |
21155 | /* For now we ignore lines not starting on an instruction boundary. | |
21156 | But not when processing end_sequence for compatibility with the | |
21157 | previous version of the code. */ | |
6f77053d | 21158 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21159 | { |
8c43009f | 21160 | fe->included_p = 1; |
94a72be7 AB |
21161 | if (m_record_lines_p |
21162 | && (producer_is_codewarrior (m_cu) || m_is_stmt || end_sequence)) | |
d9b3de22 | 21163 | { |
c24bdb02 | 21164 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 21165 | || end_sequence) |
d9b3de22 | 21166 | { |
804d2729 TT |
21167 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21168 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21169 | } |
21170 | ||
21171 | if (!end_sequence) | |
21172 | { | |
804d2729 | 21173 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21174 | m_line_has_non_zero_discriminator, |
21175 | m_last_subfile)) | |
d9b3de22 | 21176 | { |
c24bdb02 | 21177 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21178 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21179 | builder->get_current_subfile (), |
6f77053d | 21180 | m_line, m_address, |
804d2729 | 21181 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21182 | } |
c24bdb02 | 21183 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21184 | m_last_line = m_line; |
d9b3de22 DE |
21185 | } |
21186 | } | |
21187 | } | |
21188 | } | |
21189 | ||
804d2729 TT |
21190 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21191 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21192 | { |
804d2729 | 21193 | m_cu = cu; |
6f77053d PA |
21194 | m_gdbarch = arch; |
21195 | m_record_lines_p = record_lines_p; | |
21196 | m_line_header = lh; | |
d9b3de22 | 21197 | |
804d2729 | 21198 | m_currently_recording_lines = true; |
d9b3de22 | 21199 | |
d9b3de22 DE |
21200 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21201 | was a line entry for it so that the backend has a chance to adjust it | |
21202 | and also record it in case it needs it. This is currently used by MIPS | |
21203 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21204 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21205 | m_is_stmt = lh->default_is_stmt; | |
21206 | m_discriminator = 0; | |
252a6764 DE |
21207 | } |
21208 | ||
6f77053d PA |
21209 | void |
21210 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21211 | const gdb_byte *line_ptr, | |
7ab6656f | 21212 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21213 | { |
7ab6656f OJ |
21214 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
21215 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
21216 | values of zero to preserve GDB's previous behaviour which is to handle | |
21217 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 21218 | |
7ab6656f | 21219 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
21220 | { |
21221 | /* This line table is for a function which has been | |
21222 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21223 | ||
518817b3 | 21224 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21225 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21226 | ||
b98664d3 | 21227 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21228 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21229 | m_currently_recording_lines = false; |
21230 | /* Note: m_currently_recording_lines is left as false until we see | |
21231 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21232 | } |
21233 | } | |
21234 | ||
f3f5162e | 21235 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21236 | Process the line number information in LH. |
21237 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21238 | program in order to set included_p for every referenced header. */ | |
debd256d | 21239 | |
c906108c | 21240 | static void |
43f3e411 DE |
21241 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21242 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21243 | { |
d521ce57 TT |
21244 | const gdb_byte *line_ptr, *extended_end; |
21245 | const gdb_byte *line_end; | |
a8c50c1f | 21246 | unsigned int bytes_read, extended_len; |
699ca60a | 21247 | unsigned char op_code, extended_op; |
e142c38c | 21248 | CORE_ADDR baseaddr; |
518817b3 | 21249 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21250 | bfd *abfd = objfile->obfd; |
fbf65064 | 21251 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21252 | /* True if we're recording line info (as opposed to building partial |
21253 | symtabs and just interested in finding include files mentioned by | |
21254 | the line number program). */ | |
21255 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21256 | |
b3b3bada | 21257 | baseaddr = objfile->text_section_offset (); |
c906108c | 21258 | |
debd256d JB |
21259 | line_ptr = lh->statement_program_start; |
21260 | line_end = lh->statement_program_end; | |
c906108c SS |
21261 | |
21262 | /* Read the statement sequences until there's nothing left. */ | |
21263 | while (line_ptr < line_end) | |
21264 | { | |
6f77053d PA |
21265 | /* The DWARF line number program state machine. Reset the state |
21266 | machine at the start of each sequence. */ | |
804d2729 | 21267 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21268 | bool end_sequence = false; |
d9b3de22 | 21269 | |
8c43009f | 21270 | if (record_lines_p) |
c906108c | 21271 | { |
8c43009f PA |
21272 | /* Start a subfile for the current file of the state |
21273 | machine. */ | |
21274 | const file_entry *fe = state_machine.current_file (); | |
21275 | ||
21276 | if (fe != NULL) | |
804d2729 | 21277 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21278 | } |
21279 | ||
a738430d | 21280 | /* Decode the table. */ |
d9b3de22 | 21281 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21282 | { |
21283 | op_code = read_1_byte (abfd, line_ptr); | |
21284 | line_ptr += 1; | |
9aa1fe7e | 21285 | |
debd256d | 21286 | if (op_code >= lh->opcode_base) |
6e70227d | 21287 | { |
8e07a239 | 21288 | /* Special opcode. */ |
6f77053d | 21289 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21290 | } |
21291 | else switch (op_code) | |
c906108c SS |
21292 | { |
21293 | case DW_LNS_extended_op: | |
3e43a32a MS |
21294 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21295 | &bytes_read); | |
473b7be6 | 21296 | line_ptr += bytes_read; |
a8c50c1f | 21297 | extended_end = line_ptr + extended_len; |
c906108c SS |
21298 | extended_op = read_1_byte (abfd, line_ptr); |
21299 | line_ptr += 1; | |
21300 | switch (extended_op) | |
21301 | { | |
21302 | case DW_LNE_end_sequence: | |
6f77053d PA |
21303 | state_machine.handle_end_sequence (); |
21304 | end_sequence = true; | |
c906108c SS |
21305 | break; |
21306 | case DW_LNE_set_address: | |
d9b3de22 DE |
21307 | { |
21308 | CORE_ADDR address | |
21309 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21310 | line_ptr += bytes_read; |
6f77053d PA |
21311 | |
21312 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21313 | lowpc - baseaddr, address); |
6f77053d | 21314 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21315 | } |
c906108c SS |
21316 | break; |
21317 | case DW_LNE_define_file: | |
debd256d | 21318 | { |
d521ce57 | 21319 | const char *cur_file; |
ecfb656c PA |
21320 | unsigned int mod_time, length; |
21321 | dir_index dindex; | |
6e70227d | 21322 | |
3e43a32a MS |
21323 | cur_file = read_direct_string (abfd, line_ptr, |
21324 | &bytes_read); | |
debd256d | 21325 | line_ptr += bytes_read; |
ecfb656c | 21326 | dindex = (dir_index) |
debd256d JB |
21327 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21328 | line_ptr += bytes_read; | |
21329 | mod_time = | |
21330 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21331 | line_ptr += bytes_read; | |
21332 | length = | |
21333 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21334 | line_ptr += bytes_read; | |
ecfb656c | 21335 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21336 | } |
c906108c | 21337 | break; |
d0c6ba3d | 21338 | case DW_LNE_set_discriminator: |
6f77053d PA |
21339 | { |
21340 | /* The discriminator is not interesting to the | |
21341 | debugger; just ignore it. We still need to | |
21342 | check its value though: | |
21343 | if there are consecutive entries for the same | |
21344 | (non-prologue) line we want to coalesce them. | |
21345 | PR 17276. */ | |
21346 | unsigned int discr | |
21347 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21348 | line_ptr += bytes_read; | |
21349 | ||
21350 | state_machine.handle_set_discriminator (discr); | |
21351 | } | |
d0c6ba3d | 21352 | break; |
c906108c | 21353 | default: |
b98664d3 | 21354 | complaint (_("mangled .debug_line section")); |
debd256d | 21355 | return; |
c906108c | 21356 | } |
a8c50c1f DJ |
21357 | /* Make sure that we parsed the extended op correctly. If e.g. |
21358 | we expected a different address size than the producer used, | |
21359 | we may have read the wrong number of bytes. */ | |
21360 | if (line_ptr != extended_end) | |
21361 | { | |
b98664d3 | 21362 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21363 | return; |
21364 | } | |
c906108c SS |
21365 | break; |
21366 | case DW_LNS_copy: | |
6f77053d | 21367 | state_machine.handle_copy (); |
c906108c SS |
21368 | break; |
21369 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21370 | { |
21371 | CORE_ADDR adjust | |
21372 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21373 | line_ptr += bytes_read; |
6f77053d PA |
21374 | |
21375 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21376 | } |
c906108c SS |
21377 | break; |
21378 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21379 | { |
21380 | int line_delta | |
21381 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21382 | line_ptr += bytes_read; |
6f77053d PA |
21383 | |
21384 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21385 | } |
c906108c SS |
21386 | break; |
21387 | case DW_LNS_set_file: | |
d9b3de22 | 21388 | { |
6f77053d | 21389 | file_name_index file |
ecfb656c PA |
21390 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21391 | &bytes_read); | |
d9b3de22 | 21392 | line_ptr += bytes_read; |
8c43009f | 21393 | |
6f77053d | 21394 | state_machine.handle_set_file (file); |
d9b3de22 | 21395 | } |
c906108c SS |
21396 | break; |
21397 | case DW_LNS_set_column: | |
0ad93d4f | 21398 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21399 | line_ptr += bytes_read; |
21400 | break; | |
21401 | case DW_LNS_negate_stmt: | |
6f77053d | 21402 | state_machine.handle_negate_stmt (); |
c906108c SS |
21403 | break; |
21404 | case DW_LNS_set_basic_block: | |
c906108c | 21405 | break; |
c2c6d25f JM |
21406 | /* Add to the address register of the state machine the |
21407 | address increment value corresponding to special opcode | |
a738430d MK |
21408 | 255. I.e., this value is scaled by the minimum |
21409 | instruction length since special opcode 255 would have | |
b021a221 | 21410 | scaled the increment. */ |
c906108c | 21411 | case DW_LNS_const_add_pc: |
6f77053d | 21412 | state_machine.handle_const_add_pc (); |
c906108c SS |
21413 | break; |
21414 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21415 | { |
6f77053d | 21416 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21417 | line_ptr += 2; |
6f77053d PA |
21418 | |
21419 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21420 | } |
c906108c | 21421 | break; |
9aa1fe7e | 21422 | default: |
a738430d MK |
21423 | { |
21424 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21425 | int i; |
a738430d | 21426 | |
debd256d | 21427 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21428 | { |
21429 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21430 | line_ptr += bytes_read; | |
21431 | } | |
21432 | } | |
c906108c SS |
21433 | } |
21434 | } | |
d9b3de22 DE |
21435 | |
21436 | if (!end_sequence) | |
21437 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21438 | ||
21439 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21440 | in which case we still finish recording the last line). */ | |
6f77053d | 21441 | state_machine.record_line (true); |
c906108c | 21442 | } |
f3f5162e DE |
21443 | } |
21444 | ||
21445 | /* Decode the Line Number Program (LNP) for the given line_header | |
21446 | structure and CU. The actual information extracted and the type | |
21447 | of structures created from the LNP depends on the value of PST. | |
21448 | ||
21449 | 1. If PST is NULL, then this procedure uses the data from the program | |
21450 | to create all necessary symbol tables, and their linetables. | |
21451 | ||
21452 | 2. If PST is not NULL, this procedure reads the program to determine | |
21453 | the list of files included by the unit represented by PST, and | |
21454 | builds all the associated partial symbol tables. | |
21455 | ||
21456 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21457 | It is used for relative paths in the line table. | |
21458 | NOTE: When processing partial symtabs (pst != NULL), | |
21459 | comp_dir == pst->dirname. | |
21460 | ||
21461 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21462 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21463 | symtab we don't use it in the name of the psymtabs we create. | |
21464 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21465 | A good testcase for this is mb-inline.exp. |
21466 | ||
527f3840 JK |
21467 | LOWPC is the lowest address in CU (or 0 if not known). |
21468 | ||
21469 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21470 | for its PC<->lines mapping information. Otherwise only the filename | |
21471 | table is read in. */ | |
f3f5162e DE |
21472 | |
21473 | static void | |
21474 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21475 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21476 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21477 | { |
518817b3 | 21478 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21479 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21480 | |
527f3840 JK |
21481 | if (decode_mapping) |
21482 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21483 | |
21484 | if (decode_for_pst_p) | |
21485 | { | |
aaa75496 JB |
21486 | /* Now that we're done scanning the Line Header Program, we can |
21487 | create the psymtab of each included file. */ | |
7ba99d21 AT |
21488 | for (auto &file_entry : lh->file_names ()) |
21489 | if (file_entry.included_p == 1) | |
aaa75496 | 21490 | { |
c89b44cd | 21491 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21492 | const char *include_name = |
7ba99d21 AT |
21493 | psymtab_include_file_name (lh, file_entry, pst, |
21494 | comp_dir, &name_holder); | |
c6da4cef | 21495 | if (include_name != NULL) |
aaa75496 JB |
21496 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21497 | } | |
21498 | } | |
cb1df416 DJ |
21499 | else |
21500 | { | |
21501 | /* Make sure a symtab is created for every file, even files | |
21502 | which contain only variables (i.e. no code with associated | |
21503 | line numbers). */ | |
c24bdb02 KS |
21504 | buildsym_compunit *builder = cu->get_builder (); |
21505 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21506 | |
7ba99d21 | 21507 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21508 | { |
804d2729 | 21509 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21510 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21511 | { |
c24bdb02 | 21512 | builder->get_current_subfile ()->symtab |
804d2729 | 21513 | = allocate_symtab (cust, |
c24bdb02 | 21514 | builder->get_current_subfile ()->name); |
43f3e411 | 21515 | } |
c24bdb02 | 21516 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21517 | } |
21518 | } | |
c906108c SS |
21519 | } |
21520 | ||
21521 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21522 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21523 | or NULL if not known. |
c906108c SS |
21524 | This routine tries to keep line numbers from identical absolute and |
21525 | relative file names in a common subfile. | |
21526 | ||
21527 | Using the `list' example from the GDB testsuite, which resides in | |
21528 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21529 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21530 | ||
c5aa993b | 21531 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21532 | DW_AT_comp_dir: /compdir |
357e46e7 | 21533 | files.files[0].name: list0.h |
c5aa993b | 21534 | files.files[0].dir: /srcdir |
357e46e7 | 21535 | files.files[1].name: list0.c |
c5aa993b | 21536 | files.files[1].dir: /srcdir |
c906108c SS |
21537 | |
21538 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21539 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21540 | start_subfile will ensure that this happens provided that we pass the | |
21541 | concatenation of files.files[1].dir and files.files[1].name as the | |
21542 | subfile's name. */ | |
c906108c SS |
21543 | |
21544 | static void | |
804d2729 TT |
21545 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21546 | const char *dirname) | |
c906108c | 21547 | { |
43816ebc | 21548 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21549 | |
4d663531 | 21550 | /* In order not to lose the line information directory, |
4f1520fb FR |
21551 | we concatenate it to the filename when it makes sense. |
21552 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21553 | information): ``The directory index is ignored for file names | |
21554 | that represent full path names''. Thus ignoring dirname in the | |
21555 | `else' branch below isn't an issue. */ | |
c906108c | 21556 | |
d5166ae1 | 21557 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21558 | { |
43816ebc TT |
21559 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21560 | filename = copy.get (); | |
d521ce57 | 21561 | } |
c906108c | 21562 | |
c24bdb02 | 21563 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21564 | } |
21565 | ||
804d2729 TT |
21566 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21567 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21568 | |
c24bdb02 KS |
21569 | struct compunit_symtab * |
21570 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21571 | CORE_ADDR low_pc) | |
f4dc4d17 | 21572 | { |
c24bdb02 | 21573 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21574 | |
c24bdb02 KS |
21575 | m_builder.reset (new struct buildsym_compunit |
21576 | (per_cu->dwarf2_per_objfile->objfile, | |
21577 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21578 | |
c24bdb02 | 21579 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21580 | |
c24bdb02 KS |
21581 | get_builder ()->record_debugformat ("DWARF 2"); |
21582 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21583 | |
c24bdb02 | 21584 | processing_has_namespace_info = false; |
43f3e411 | 21585 | |
c24bdb02 | 21586 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21587 | } |
21588 | ||
4c2df51b DJ |
21589 | static void |
21590 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21591 | struct dwarf2_cu *cu) |
4c2df51b | 21592 | { |
518817b3 | 21593 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21594 | struct comp_unit_head *cu_header = &cu->header; |
21595 | ||
4c2df51b DJ |
21596 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21597 | code here to turn a symbol with DW_AT_external and a | |
21598 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21599 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21600 | with some versions of binutils) where shared libraries could have | |
21601 | relocations against symbols in their debug information - the | |
21602 | minimal symbol would have the right address, but the debug info | |
21603 | would not. It's no longer necessary, because we will explicitly | |
21604 | apply relocations when we read in the debug information now. */ | |
21605 | ||
21606 | /* A DW_AT_location attribute with no contents indicates that a | |
21607 | variable has been optimized away. */ | |
21608 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21609 | { | |
f1e6e072 | 21610 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21611 | return; |
21612 | } | |
21613 | ||
21614 | /* Handle one degenerate form of location expression specially, to | |
21615 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21616 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21617 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21618 | |
21619 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21620 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21621 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21622 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21623 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21624 | && (DW_BLOCK (attr)->size |
21625 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21626 | { |
891d2f0b | 21627 | unsigned int dummy; |
4c2df51b | 21628 | |
3019eac3 | 21629 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
38583298 TT |
21630 | SET_SYMBOL_VALUE_ADDRESS (sym, |
21631 | read_address (objfile->obfd, | |
21632 | DW_BLOCK (attr)->data + 1, | |
21633 | cu, &dummy)); | |
3019eac3 | 21634 | else |
38583298 TT |
21635 | SET_SYMBOL_VALUE_ADDRESS |
21636 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
21637 | &dummy)); | |
f1e6e072 | 21638 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 21639 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
21640 | SET_SYMBOL_VALUE_ADDRESS |
21641 | (sym, | |
21642 | SYMBOL_VALUE_ADDRESS (sym) | |
21643 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
21644 | return; |
21645 | } | |
21646 | ||
21647 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21648 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21649 | (i.e. when the value of a register or memory location is | |
21650 | referenced, or a thread-local block, etc.). Then again, it might | |
21651 | not be worthwhile. I'm assuming that it isn't unless performance | |
21652 | or memory numbers show me otherwise. */ | |
21653 | ||
f1e6e072 | 21654 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21655 | |
f1e6e072 | 21656 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21657 | cu->has_loclist = true; |
4c2df51b DJ |
21658 | } |
21659 | ||
c906108c SS |
21660 | /* Given a pointer to a DWARF information entry, figure out if we need |
21661 | to make a symbol table entry for it, and if so, create a new entry | |
21662 | and return a pointer to it. | |
21663 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21664 | used the passed type. |
21665 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21666 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21667 | |
21668 | static struct symbol * | |
5e2db402 TT |
21669 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21670 | struct symbol *space) | |
c906108c | 21671 | { |
518817b3 SM |
21672 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21673 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21674 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21675 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21676 | struct symbol *sym = NULL; |
15d034d0 | 21677 | const char *name; |
c906108c SS |
21678 | struct attribute *attr = NULL; |
21679 | struct attribute *attr2 = NULL; | |
e142c38c | 21680 | CORE_ADDR baseaddr; |
e37fd15a SW |
21681 | struct pending **list_to_add = NULL; |
21682 | ||
edb3359d | 21683 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21684 | |
b3b3bada | 21685 | baseaddr = objfile->text_section_offset (); |
c906108c | 21686 | |
94af9270 | 21687 | name = dwarf2_name (die, cu); |
c906108c SS |
21688 | if (name) |
21689 | { | |
94af9270 | 21690 | const char *linkagename; |
34eaf542 | 21691 | int suppress_add = 0; |
94af9270 | 21692 | |
34eaf542 TT |
21693 | if (space) |
21694 | sym = space; | |
21695 | else | |
e623cf5d | 21696 | sym = allocate_symbol (objfile); |
c906108c | 21697 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21698 | |
21699 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21700 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 21701 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 21702 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 21703 | |
f55ee35c JK |
21704 | /* Fortran does not have mangling standard and the mangling does differ |
21705 | between gfortran, iFort etc. */ | |
21706 | if (cu->language == language_fortran | |
468c0cbb CB |
21707 | && symbol_get_demangled_name (sym) == NULL) |
21708 | symbol_set_demangled_name (sym, | |
cfc594ee | 21709 | dwarf2_full_name (name, die, cu), |
29df156d | 21710 | NULL); |
f55ee35c | 21711 | |
c906108c | 21712 | /* Default assumptions. |
c5aa993b | 21713 | Use the passed type or decode it from the die. */ |
176620f1 | 21714 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21715 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21716 | if (type != NULL) |
21717 | SYMBOL_TYPE (sym) = type; | |
21718 | else | |
e7c27a73 | 21719 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21720 | attr = dwarf2_attr (die, |
21721 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21722 | cu); | |
435d3d88 | 21723 | if (attr != nullptr) |
c906108c SS |
21724 | { |
21725 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21726 | } | |
cb1df416 | 21727 | |
edb3359d DJ |
21728 | attr = dwarf2_attr (die, |
21729 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21730 | cu); | |
435d3d88 | 21731 | if (attr != nullptr) |
cb1df416 | 21732 | { |
ecfb656c | 21733 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21734 | struct file_entry *fe; |
9a619af0 | 21735 | |
ecfb656c PA |
21736 | if (cu->line_header != NULL) |
21737 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21738 | else |
21739 | fe = NULL; | |
21740 | ||
21741 | if (fe == NULL) | |
b98664d3 | 21742 | complaint (_("file index out of range")); |
8c43009f PA |
21743 | else |
21744 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21745 | } |
21746 | ||
c906108c SS |
21747 | switch (die->tag) |
21748 | { | |
21749 | case DW_TAG_label: | |
e142c38c | 21750 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21751 | if (attr != nullptr) |
3e29f34a MR |
21752 | { |
21753 | CORE_ADDR addr; | |
21754 | ||
21755 | addr = attr_value_as_address (attr); | |
21756 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
38583298 | 21757 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 21758 | } |
0f5238ed TT |
21759 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21760 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21761 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21762 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21763 | break; |
21764 | case DW_TAG_subprogram: | |
21765 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21766 | finish_block. */ | |
f1e6e072 | 21767 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21768 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21769 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21770 | || cu->language == language_ada |
21771 | || cu->language == language_fortran) | |
c906108c | 21772 | { |
2cfa0c8d | 21773 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21774 | Ada and Fortran subprograms, whether marked external or |
21775 | not, are always stored as a global symbol, because we want | |
21776 | to be able to access them globally. For instance, we want | |
21777 | to be able to break on a nested subprogram without having | |
21778 | to specify the context. */ | |
c24bdb02 | 21779 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21780 | } |
21781 | else | |
21782 | { | |
e37fd15a | 21783 | list_to_add = cu->list_in_scope; |
c906108c SS |
21784 | } |
21785 | break; | |
edb3359d DJ |
21786 | case DW_TAG_inlined_subroutine: |
21787 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21788 | finish_block. */ | |
f1e6e072 | 21789 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21790 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21791 | list_to_add = cu->list_in_scope; |
edb3359d | 21792 | break; |
34eaf542 TT |
21793 | case DW_TAG_template_value_param: |
21794 | suppress_add = 1; | |
21795 | /* Fall through. */ | |
72929c62 | 21796 | case DW_TAG_constant: |
c906108c | 21797 | case DW_TAG_variable: |
254e6b9e | 21798 | case DW_TAG_member: |
0963b4bd MS |
21799 | /* Compilation with minimal debug info may result in |
21800 | variables with missing type entries. Change the | |
21801 | misleading `void' type to something sensible. */ | |
c906108c | 21802 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21803 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21804 | |
e142c38c | 21805 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21806 | /* In the case of DW_TAG_member, we should only be called for |
21807 | static const members. */ | |
21808 | if (die->tag == DW_TAG_member) | |
21809 | { | |
3863f96c DE |
21810 | /* dwarf2_add_field uses die_is_declaration, |
21811 | so we do the same. */ | |
254e6b9e DE |
21812 | gdb_assert (die_is_declaration (die, cu)); |
21813 | gdb_assert (attr); | |
21814 | } | |
435d3d88 | 21815 | if (attr != nullptr) |
c906108c | 21816 | { |
e7c27a73 | 21817 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21818 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21819 | if (!suppress_add) |
34eaf542 TT |
21820 | { |
21821 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21822 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21823 | else |
e37fd15a | 21824 | list_to_add = cu->list_in_scope; |
34eaf542 | 21825 | } |
c906108c SS |
21826 | break; |
21827 | } | |
e142c38c | 21828 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21829 | if (attr != nullptr) |
c906108c | 21830 | { |
e7c27a73 | 21831 | var_decode_location (attr, sym, cu); |
e142c38c | 21832 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21833 | |
21834 | /* Fortran explicitly imports any global symbols to the local | |
21835 | scope by DW_TAG_common_block. */ | |
21836 | if (cu->language == language_fortran && die->parent | |
21837 | && die->parent->tag == DW_TAG_common_block) | |
21838 | attr2 = NULL; | |
21839 | ||
caac4577 JG |
21840 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21841 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21842 | && !dwarf2_per_objfile->has_section_at_zero) | |
21843 | { | |
21844 | /* When a static variable is eliminated by the linker, | |
21845 | the corresponding debug information is not stripped | |
21846 | out, but the variable address is set to null; | |
21847 | do not add such variables into symbol table. */ | |
21848 | } | |
21849 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21850 | { |
4b610737 TT |
21851 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21852 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
21853 | && dwarf2_per_objfile->can_copy) | |
21854 | { | |
21855 | /* A global static variable might be subject to | |
21856 | copy relocation. We first check for a local | |
21857 | minsym, though, because maybe the symbol was | |
21858 | marked hidden, in which case this would not | |
21859 | apply. */ | |
21860 | bound_minimal_symbol found | |
21861 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21862 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21863 | if (found.minsym != nullptr) |
21864 | sym->maybe_copied = 1; | |
21865 | } | |
f55ee35c | 21866 | |
1c809c68 TT |
21867 | /* A variable with DW_AT_external is never static, |
21868 | but it may be block-scoped. */ | |
804d2729 | 21869 | list_to_add |
c24bdb02 KS |
21870 | = ((cu->list_in_scope |
21871 | == cu->get_builder ()->get_file_symbols ()) | |
21872 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21873 | : cu->list_in_scope); |
1c809c68 | 21874 | } |
c906108c | 21875 | else |
e37fd15a | 21876 | list_to_add = cu->list_in_scope; |
c906108c SS |
21877 | } |
21878 | else | |
21879 | { | |
21880 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21881 | If it is an external symbol and we have type information |
21882 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21883 | The address of the variable will then be determined from | |
21884 | the minimal symbol table whenever the variable is | |
21885 | referenced. */ | |
e142c38c | 21886 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21887 | |
21888 | /* Fortran explicitly imports any global symbols to the local | |
21889 | scope by DW_TAG_common_block. */ | |
21890 | if (cu->language == language_fortran && die->parent | |
21891 | && die->parent->tag == DW_TAG_common_block) | |
21892 | { | |
21893 | /* SYMBOL_CLASS doesn't matter here because | |
21894 | read_common_block is going to reset it. */ | |
21895 | if (!suppress_add) | |
21896 | list_to_add = cu->list_in_scope; | |
21897 | } | |
21898 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21899 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21900 | { |
0fe7935b DJ |
21901 | /* A variable with DW_AT_external is never static, but it |
21902 | may be block-scoped. */ | |
804d2729 | 21903 | list_to_add |
c24bdb02 KS |
21904 | = ((cu->list_in_scope |
21905 | == cu->get_builder ()->get_file_symbols ()) | |
21906 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21907 | : cu->list_in_scope); |
0fe7935b | 21908 | |
f1e6e072 | 21909 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21910 | } |
442ddf59 JK |
21911 | else if (!die_is_declaration (die, cu)) |
21912 | { | |
21913 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21914 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21915 | if (!suppress_add) |
21916 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21917 | } |
c906108c SS |
21918 | } |
21919 | break; | |
21920 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21921 | { |
21922 | /* If we are inside a function, mark this as an argument. If | |
21923 | not, we might be looking at an argument to an inlined function | |
21924 | when we do not have enough information to show inlined frames; | |
21925 | pretend it's a local variable in that case so that the user can | |
21926 | still see it. */ | |
804d2729 | 21927 | struct context_stack *curr |
c24bdb02 | 21928 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21929 | if (curr != nullptr && curr->name != nullptr) |
21930 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21931 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21932 | if (attr != nullptr) |
a60f3166 TT |
21933 | { |
21934 | var_decode_location (attr, sym, cu); | |
21935 | } | |
21936 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21937 | if (attr != nullptr) |
a60f3166 TT |
21938 | { |
21939 | dwarf2_const_value (attr, sym, cu); | |
21940 | } | |
f346a30d | 21941 | |
a60f3166 TT |
21942 | list_to_add = cu->list_in_scope; |
21943 | } | |
c906108c SS |
21944 | break; |
21945 | case DW_TAG_unspecified_parameters: | |
21946 | /* From varargs functions; gdb doesn't seem to have any | |
21947 | interest in this information, so just ignore it for now. | |
21948 | (FIXME?) */ | |
21949 | break; | |
34eaf542 TT |
21950 | case DW_TAG_template_type_param: |
21951 | suppress_add = 1; | |
21952 | /* Fall through. */ | |
c906108c | 21953 | case DW_TAG_class_type: |
680b30c7 | 21954 | case DW_TAG_interface_type: |
c906108c SS |
21955 | case DW_TAG_structure_type: |
21956 | case DW_TAG_union_type: | |
72019c9c | 21957 | case DW_TAG_set_type: |
c906108c | 21958 | case DW_TAG_enumeration_type: |
f1e6e072 | 21959 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21960 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21961 | |
63d06c5c | 21962 | { |
9c37b5ae | 21963 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21964 | really ever be static objects: otherwise, if you try |
21965 | to, say, break of a class's method and you're in a file | |
21966 | which doesn't mention that class, it won't work unless | |
21967 | the check for all static symbols in lookup_symbol_aux | |
21968 | saves you. See the OtherFileClass tests in | |
21969 | gdb.c++/namespace.exp. */ | |
21970 | ||
e37fd15a | 21971 | if (!suppress_add) |
34eaf542 | 21972 | { |
c24bdb02 | 21973 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21974 | list_to_add |
c24bdb02 | 21975 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21976 | && cu->language == language_cplus |
c24bdb02 | 21977 | ? builder->get_global_symbols () |
804d2729 | 21978 | : cu->list_in_scope); |
63d06c5c | 21979 | |
64382290 | 21980 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21981 | ... }" also defines a typedef for "foo". */ |
64382290 | 21982 | if (cu->language == language_cplus |
45280282 | 21983 | || cu->language == language_ada |
c44af4eb TT |
21984 | || cu->language == language_d |
21985 | || cu->language == language_rust) | |
64382290 TT |
21986 | { |
21987 | /* The symbol's name is already allocated along | |
21988 | with this objfile, so we don't need to | |
21989 | duplicate it for the type. */ | |
21990 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 21991 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 21992 | } |
63d06c5c DC |
21993 | } |
21994 | } | |
c906108c SS |
21995 | break; |
21996 | case DW_TAG_typedef: | |
f1e6e072 | 21997 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21998 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21999 | list_to_add = cu->list_in_scope; |
63d06c5c | 22000 | break; |
c906108c | 22001 | case DW_TAG_base_type: |
a02abb62 | 22002 | case DW_TAG_subrange_type: |
f1e6e072 | 22003 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22004 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22005 | list_to_add = cu->list_in_scope; |
c906108c SS |
22006 | break; |
22007 | case DW_TAG_enumerator: | |
e142c38c | 22008 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22009 | if (attr != nullptr) |
c906108c | 22010 | { |
e7c27a73 | 22011 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22012 | } |
63d06c5c DC |
22013 | { |
22014 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22015 | DW_TAG_class_type, etc. block. */ | |
22016 | ||
804d2729 | 22017 | list_to_add |
c24bdb02 | 22018 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22019 | && cu->language == language_cplus |
c24bdb02 | 22020 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22021 | : cu->list_in_scope); |
63d06c5c | 22022 | } |
c906108c | 22023 | break; |
74921315 | 22024 | case DW_TAG_imported_declaration: |
5c4e30ca | 22025 | case DW_TAG_namespace: |
f1e6e072 | 22026 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22027 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22028 | break; |
530e8392 KB |
22029 | case DW_TAG_module: |
22030 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22031 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22032 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22033 | break; |
4357ac6c | 22034 | case DW_TAG_common_block: |
f1e6e072 | 22035 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22036 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22037 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22038 | break; |
c906108c SS |
22039 | default: |
22040 | /* Not a tag we recognize. Hopefully we aren't processing | |
22041 | trash data, but since we must specifically ignore things | |
22042 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22043 | this point. */ |
b98664d3 | 22044 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22045 | dwarf_tag_name (die->tag)); |
c906108c SS |
22046 | break; |
22047 | } | |
df8a16a1 | 22048 | |
e37fd15a SW |
22049 | if (suppress_add) |
22050 | { | |
22051 | sym->hash_next = objfile->template_symbols; | |
22052 | objfile->template_symbols = sym; | |
22053 | list_to_add = NULL; | |
22054 | } | |
22055 | ||
22056 | if (list_to_add != NULL) | |
d3cb6808 | 22057 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22058 | |
df8a16a1 DJ |
22059 | /* For the benefit of old versions of GCC, check for anonymous |
22060 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22061 | if (!cu->processing_has_namespace_info |
94af9270 | 22062 | && cu->language == language_cplus) |
c24bdb02 | 22063 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22064 | } |
22065 | return (sym); | |
22066 | } | |
22067 | ||
98bfdba5 PA |
22068 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22069 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22070 | standard (v4) is not entirely clear about the meaning of using | |
22071 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22072 | wider than the data. The conclusion of a discussion on the DWARF | |
22073 | list was that this is unspecified. We choose to always zero-extend | |
22074 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22075 | |
98bfdba5 | 22076 | static gdb_byte * |
ff39bb5e | 22077 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22078 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22079 | { |
518817b3 | 22080 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
22081 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22082 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
22083 | LONGEST l = DW_UNSND (attr); |
22084 | ||
22085 | if (bits < sizeof (*value) * 8) | |
22086 | { | |
22087 | l &= ((LONGEST) 1 << bits) - 1; | |
22088 | *value = l; | |
22089 | } | |
22090 | else if (bits == sizeof (*value) * 8) | |
22091 | *value = l; | |
22092 | else | |
22093 | { | |
224c3ddb | 22094 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22095 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22096 | return bytes; | |
22097 | } | |
22098 | ||
22099 | return NULL; | |
22100 | } | |
22101 | ||
22102 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22103 | the value does not fit in *VALUE, set *BYTES - either already | |
22104 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22105 | or, set *BATON, if we translated the constant to a location | |
22106 | expression. */ | |
22107 | ||
22108 | static void | |
ff39bb5e | 22109 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22110 | const char *name, struct obstack *obstack, |
22111 | struct dwarf2_cu *cu, | |
d521ce57 | 22112 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22113 | struct dwarf2_locexpr_baton **baton) |
22114 | { | |
518817b3 | 22115 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 22116 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22117 | struct dwarf_block *blk; |
98bfdba5 PA |
22118 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22119 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22120 | ||
22121 | *value = 0; | |
22122 | *bytes = NULL; | |
22123 | *baton = NULL; | |
c906108c SS |
22124 | |
22125 | switch (attr->form) | |
22126 | { | |
22127 | case DW_FORM_addr: | |
336d760d | 22128 | case DW_FORM_addrx: |
3019eac3 | 22129 | case DW_FORM_GNU_addr_index: |
ac56253d | 22130 | { |
ac56253d TT |
22131 | gdb_byte *data; |
22132 | ||
98bfdba5 PA |
22133 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22134 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22135 | cu_header->addr_size, |
98bfdba5 | 22136 | TYPE_LENGTH (type)); |
ac56253d TT |
22137 | /* Symbols of this form are reasonably rare, so we just |
22138 | piggyback on the existing location code rather than writing | |
22139 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22140 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
22141 | (*baton)->per_cu = cu->per_cu; |
22142 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22143 | |
98bfdba5 | 22144 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22145 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22146 | (*baton)->data = data; |
ac56253d TT |
22147 | |
22148 | data[0] = DW_OP_addr; | |
22149 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
22150 | byte_order, DW_ADDR (attr)); | |
22151 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 22152 | } |
c906108c | 22153 | break; |
4ac36638 | 22154 | case DW_FORM_string: |
93b5768b | 22155 | case DW_FORM_strp: |
cf532bd1 | 22156 | case DW_FORM_strx: |
3019eac3 | 22157 | case DW_FORM_GNU_str_index: |
36586728 | 22158 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
22159 | /* DW_STRING is already allocated on the objfile obstack, point |
22160 | directly to it. */ | |
d521ce57 | 22161 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 22162 | break; |
c906108c SS |
22163 | case DW_FORM_block1: |
22164 | case DW_FORM_block2: | |
22165 | case DW_FORM_block4: | |
22166 | case DW_FORM_block: | |
2dc7f7b3 | 22167 | case DW_FORM_exprloc: |
0224619f | 22168 | case DW_FORM_data16: |
c906108c | 22169 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22170 | if (TYPE_LENGTH (type) != blk->size) |
22171 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22172 | TYPE_LENGTH (type)); | |
22173 | *bytes = blk->data; | |
c906108c | 22174 | break; |
2df3850c JM |
22175 | |
22176 | /* The DW_AT_const_value attributes are supposed to carry the | |
22177 | symbol's value "represented as it would be on the target | |
22178 | architecture." By the time we get here, it's already been | |
22179 | converted to host endianness, so we just need to sign- or | |
22180 | zero-extend it as appropriate. */ | |
22181 | case DW_FORM_data1: | |
3aef2284 | 22182 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22183 | break; |
c906108c | 22184 | case DW_FORM_data2: |
3aef2284 | 22185 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22186 | break; |
c906108c | 22187 | case DW_FORM_data4: |
3aef2284 | 22188 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22189 | break; |
c906108c | 22190 | case DW_FORM_data8: |
3aef2284 | 22191 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22192 | break; |
22193 | ||
c906108c | 22194 | case DW_FORM_sdata: |
663c44ac | 22195 | case DW_FORM_implicit_const: |
98bfdba5 | 22196 | *value = DW_SND (attr); |
2df3850c JM |
22197 | break; |
22198 | ||
c906108c | 22199 | case DW_FORM_udata: |
98bfdba5 | 22200 | *value = DW_UNSND (attr); |
c906108c | 22201 | break; |
2df3850c | 22202 | |
c906108c | 22203 | default: |
b98664d3 | 22204 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22205 | dwarf_form_name (attr->form)); |
98bfdba5 | 22206 | *value = 0; |
c906108c SS |
22207 | break; |
22208 | } | |
22209 | } | |
22210 | ||
2df3850c | 22211 | |
98bfdba5 PA |
22212 | /* Copy constant value from an attribute to a symbol. */ |
22213 | ||
2df3850c | 22214 | static void |
ff39bb5e | 22215 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22216 | struct dwarf2_cu *cu) |
2df3850c | 22217 | { |
518817b3 | 22218 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22219 | LONGEST value; |
d521ce57 | 22220 | const gdb_byte *bytes; |
98bfdba5 | 22221 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22222 | |
98bfdba5 | 22223 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22224 | sym->print_name (), |
98bfdba5 PA |
22225 | &objfile->objfile_obstack, cu, |
22226 | &value, &bytes, &baton); | |
2df3850c | 22227 | |
98bfdba5 PA |
22228 | if (baton != NULL) |
22229 | { | |
98bfdba5 | 22230 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22231 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22232 | } |
22233 | else if (bytes != NULL) | |
22234 | { | |
22235 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22236 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22237 | } |
22238 | else | |
22239 | { | |
22240 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22241 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22242 | } |
2df3850c JM |
22243 | } |
22244 | ||
c906108c SS |
22245 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22246 | ||
22247 | static struct type * | |
e7c27a73 | 22248 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22249 | { |
c906108c | 22250 | struct attribute *type_attr; |
c906108c | 22251 | |
e142c38c | 22252 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22253 | if (!type_attr) |
22254 | { | |
518817b3 | 22255 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22256 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22257 | return objfile_type (objfile)->builtin_void; |
c906108c | 22258 | } |
348e048f | 22259 | |
673bfd45 | 22260 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22261 | } |
22262 | ||
b4ba55a1 JB |
22263 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22264 | that allows to find parallel types through that information instead | |
22265 | of having to do expensive parallel lookups by type name. */ | |
22266 | ||
22267 | static int | |
22268 | need_gnat_info (struct dwarf2_cu *cu) | |
22269 | { | |
de4cb04a JB |
22270 | /* Assume that the Ada compiler was GNAT, which always produces |
22271 | the auxiliary information. */ | |
22272 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22273 | } |
22274 | ||
b4ba55a1 JB |
22275 | /* Return the auxiliary type of the die in question using its |
22276 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22277 | attribute is not present. */ | |
22278 | ||
22279 | static struct type * | |
22280 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22281 | { | |
b4ba55a1 | 22282 | struct attribute *type_attr; |
b4ba55a1 JB |
22283 | |
22284 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22285 | if (!type_attr) | |
22286 | return NULL; | |
22287 | ||
673bfd45 | 22288 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22289 | } |
22290 | ||
22291 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22292 | descriptive type accordingly. */ | |
22293 | ||
22294 | static void | |
22295 | set_descriptive_type (struct type *type, struct die_info *die, | |
22296 | struct dwarf2_cu *cu) | |
22297 | { | |
22298 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22299 | ||
22300 | if (descriptive_type) | |
22301 | { | |
22302 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22303 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22304 | } | |
22305 | } | |
22306 | ||
c906108c SS |
22307 | /* Return the containing type of the die in question using its |
22308 | DW_AT_containing_type attribute. */ | |
22309 | ||
22310 | static struct type * | |
e7c27a73 | 22311 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22312 | { |
c906108c | 22313 | struct attribute *type_attr; |
518817b3 | 22314 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22315 | |
e142c38c | 22316 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22317 | if (!type_attr) |
22318 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22319 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22320 | |
673bfd45 | 22321 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22322 | } |
22323 | ||
ac9ec31b DE |
22324 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22325 | ||
22326 | static struct type * | |
22327 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22328 | { | |
518817b3 SM |
22329 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22330 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 22331 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 22332 | char *saved; |
ac9ec31b | 22333 | |
528e1572 SM |
22334 | std::string message |
22335 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22336 | objfile_name (objfile), | |
22337 | sect_offset_str (cu->header.sect_off), | |
22338 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22339 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22340 | |
19f392bc | 22341 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22342 | } |
22343 | ||
673bfd45 | 22344 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22345 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22346 | DW_AT_containing_type. | |
673bfd45 DE |
22347 | If there is no type substitute an error marker. */ |
22348 | ||
c906108c | 22349 | static struct type * |
ff39bb5e | 22350 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22351 | struct dwarf2_cu *cu) |
c906108c | 22352 | { |
518817b3 SM |
22353 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22354 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22355 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22356 | struct type *this_type; |
22357 | ||
ac9ec31b DE |
22358 | gdb_assert (attr->name == DW_AT_type |
22359 | || attr->name == DW_AT_GNAT_descriptive_type | |
22360 | || attr->name == DW_AT_containing_type); | |
22361 | ||
673bfd45 DE |
22362 | /* First see if we have it cached. */ |
22363 | ||
36586728 TT |
22364 | if (attr->form == DW_FORM_GNU_ref_alt) |
22365 | { | |
22366 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22367 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22368 | |
ed2dc618 SM |
22369 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22370 | dwarf2_per_objfile); | |
9c541725 | 22371 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22372 | } |
7771576e | 22373 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22374 | { |
9c541725 | 22375 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22376 | |
9c541725 | 22377 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22378 | } |
55f1336d | 22379 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22380 | { |
ac9ec31b | 22381 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22382 | |
ac9ec31b | 22383 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22384 | } |
22385 | else | |
22386 | { | |
b98664d3 | 22387 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22388 | " at %s [in module %s]"), |
22389 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22390 | objfile_name (objfile)); |
ac9ec31b | 22391 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22392 | } |
22393 | ||
22394 | /* If not cached we need to read it in. */ | |
22395 | ||
22396 | if (this_type == NULL) | |
22397 | { | |
ac9ec31b | 22398 | struct die_info *type_die = NULL; |
673bfd45 DE |
22399 | struct dwarf2_cu *type_cu = cu; |
22400 | ||
7771576e | 22401 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22402 | type_die = follow_die_ref (die, attr, &type_cu); |
22403 | if (type_die == NULL) | |
22404 | return build_error_marker_type (cu, die); | |
22405 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22406 | from an inter-CU reference and the type's CU got expanded before |
22407 | ours. */ | |
ac9ec31b | 22408 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22409 | } |
22410 | ||
22411 | /* If we still don't have a type use an error marker. */ | |
22412 | ||
22413 | if (this_type == NULL) | |
ac9ec31b | 22414 | return build_error_marker_type (cu, die); |
673bfd45 | 22415 | |
f792889a | 22416 | return this_type; |
c906108c SS |
22417 | } |
22418 | ||
673bfd45 DE |
22419 | /* Return the type in DIE, CU. |
22420 | Returns NULL for invalid types. | |
22421 | ||
02142a6c | 22422 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22423 | and only reads the die in if necessary. |
22424 | ||
22425 | NOTE: This can be called when reading in partial or full symbols. */ | |
22426 | ||
f792889a | 22427 | static struct type * |
e7c27a73 | 22428 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22429 | { |
f792889a DJ |
22430 | struct type *this_type; |
22431 | ||
22432 | this_type = get_die_type (die, cu); | |
22433 | if (this_type) | |
22434 | return this_type; | |
22435 | ||
673bfd45 DE |
22436 | return read_type_die_1 (die, cu); |
22437 | } | |
22438 | ||
22439 | /* Read the type in DIE, CU. | |
22440 | Returns NULL for invalid types. */ | |
22441 | ||
22442 | static struct type * | |
22443 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22444 | { | |
22445 | struct type *this_type = NULL; | |
22446 | ||
c906108c SS |
22447 | switch (die->tag) |
22448 | { | |
22449 | case DW_TAG_class_type: | |
680b30c7 | 22450 | case DW_TAG_interface_type: |
c906108c SS |
22451 | case DW_TAG_structure_type: |
22452 | case DW_TAG_union_type: | |
f792889a | 22453 | this_type = read_structure_type (die, cu); |
c906108c SS |
22454 | break; |
22455 | case DW_TAG_enumeration_type: | |
f792889a | 22456 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22457 | break; |
22458 | case DW_TAG_subprogram: | |
22459 | case DW_TAG_subroutine_type: | |
edb3359d | 22460 | case DW_TAG_inlined_subroutine: |
f792889a | 22461 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22462 | break; |
22463 | case DW_TAG_array_type: | |
f792889a | 22464 | this_type = read_array_type (die, cu); |
c906108c | 22465 | break; |
72019c9c | 22466 | case DW_TAG_set_type: |
f792889a | 22467 | this_type = read_set_type (die, cu); |
72019c9c | 22468 | break; |
c906108c | 22469 | case DW_TAG_pointer_type: |
f792889a | 22470 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22471 | break; |
22472 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22473 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22474 | break; |
22475 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22476 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22477 | break; | |
22478 | case DW_TAG_rvalue_reference_type: | |
22479 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22480 | break; |
22481 | case DW_TAG_const_type: | |
f792889a | 22482 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22483 | break; |
22484 | case DW_TAG_volatile_type: | |
f792889a | 22485 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22486 | break; |
06d66ee9 TT |
22487 | case DW_TAG_restrict_type: |
22488 | this_type = read_tag_restrict_type (die, cu); | |
22489 | break; | |
c906108c | 22490 | case DW_TAG_string_type: |
f792889a | 22491 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22492 | break; |
22493 | case DW_TAG_typedef: | |
f792889a | 22494 | this_type = read_typedef (die, cu); |
c906108c | 22495 | break; |
a02abb62 | 22496 | case DW_TAG_subrange_type: |
f792889a | 22497 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22498 | break; |
c906108c | 22499 | case DW_TAG_base_type: |
f792889a | 22500 | this_type = read_base_type (die, cu); |
c906108c | 22501 | break; |
81a17f79 | 22502 | case DW_TAG_unspecified_type: |
f792889a | 22503 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22504 | break; |
0114d602 DJ |
22505 | case DW_TAG_namespace: |
22506 | this_type = read_namespace_type (die, cu); | |
22507 | break; | |
f55ee35c JK |
22508 | case DW_TAG_module: |
22509 | this_type = read_module_type (die, cu); | |
22510 | break; | |
a2c2acaf MW |
22511 | case DW_TAG_atomic_type: |
22512 | this_type = read_tag_atomic_type (die, cu); | |
22513 | break; | |
c906108c | 22514 | default: |
b98664d3 | 22515 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22516 | dwarf_tag_name (die->tag)); |
c906108c SS |
22517 | break; |
22518 | } | |
63d06c5c | 22519 | |
f792889a | 22520 | return this_type; |
63d06c5c DC |
22521 | } |
22522 | ||
abc72ce4 DE |
22523 | /* See if we can figure out if the class lives in a namespace. We do |
22524 | this by looking for a member function; its demangled name will | |
22525 | contain namespace info, if there is any. | |
22526 | Return the computed name or NULL. | |
22527 | Space for the result is allocated on the objfile's obstack. | |
22528 | This is the full-die version of guess_partial_die_structure_name. | |
22529 | In this case we know DIE has no useful parent. */ | |
22530 | ||
43816ebc | 22531 | static const char * |
abc72ce4 DE |
22532 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22533 | { | |
22534 | struct die_info *spec_die; | |
22535 | struct dwarf2_cu *spec_cu; | |
22536 | struct die_info *child; | |
518817b3 | 22537 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22538 | |
22539 | spec_cu = cu; | |
22540 | spec_die = die_specification (die, &spec_cu); | |
22541 | if (spec_die != NULL) | |
22542 | { | |
22543 | die = spec_die; | |
22544 | cu = spec_cu; | |
22545 | } | |
22546 | ||
22547 | for (child = die->child; | |
22548 | child != NULL; | |
22549 | child = child->sibling) | |
22550 | { | |
22551 | if (child->tag == DW_TAG_subprogram) | |
22552 | { | |
73b9be8b | 22553 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22554 | |
7d45c7c3 | 22555 | if (linkage_name != NULL) |
abc72ce4 | 22556 | { |
43816ebc TT |
22557 | gdb::unique_xmalloc_ptr<char> actual_name |
22558 | (language_class_name_from_physname (cu->language_defn, | |
22559 | linkage_name)); | |
22560 | const char *name = NULL; | |
abc72ce4 DE |
22561 | |
22562 | if (actual_name != NULL) | |
22563 | { | |
15d034d0 | 22564 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22565 | |
22566 | if (die_name != NULL | |
43816ebc | 22567 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22568 | { |
22569 | /* Strip off the class name from the full name. | |
22570 | We want the prefix. */ | |
22571 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22572 | int actual_name_len = strlen (actual_name.get ()); |
22573 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22574 | |
22575 | /* Test for '::' as a sanity check. */ | |
22576 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22577 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22578 | name = obstack_strndup ( |
e3b94546 | 22579 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22580 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22581 | } |
22582 | } | |
abc72ce4 DE |
22583 | return name; |
22584 | } | |
22585 | } | |
22586 | } | |
22587 | ||
22588 | return NULL; | |
22589 | } | |
22590 | ||
96408a79 SA |
22591 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22592 | prefix part in such case. See | |
22593 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22594 | ||
a121b7c1 | 22595 | static const char * |
96408a79 SA |
22596 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22597 | { | |
22598 | struct attribute *attr; | |
e6a959d6 | 22599 | const char *base; |
96408a79 SA |
22600 | |
22601 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22602 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22603 | return NULL; | |
22604 | ||
7d45c7c3 | 22605 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22606 | return NULL; |
22607 | ||
73b9be8b | 22608 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22609 | if (attr == NULL || DW_STRING (attr) == NULL) |
22610 | return NULL; | |
22611 | ||
22612 | /* dwarf2_name had to be already called. */ | |
22613 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22614 | ||
22615 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22616 | base = strrchr (DW_STRING (attr), ':'); | |
22617 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22618 | return ""; | |
22619 | ||
518817b3 | 22620 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
22621 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22622 | DW_STRING (attr), | |
22623 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22624 | } |
22625 | ||
fdde2d81 | 22626 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22627 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22628 | |
0114d602 DJ |
22629 | For example, if we're within the method foo() in the following |
22630 | code: | |
22631 | ||
22632 | namespace N { | |
22633 | class C { | |
22634 | void foo () { | |
22635 | } | |
22636 | }; | |
22637 | } | |
22638 | ||
22639 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22640 | |
0d5cff50 | 22641 | static const char * |
e142c38c | 22642 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22643 | { |
518817b3 SM |
22644 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22645 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22646 | struct die_info *parent, *spec_die; |
22647 | struct dwarf2_cu *spec_cu; | |
22648 | struct type *parent_type; | |
a121b7c1 | 22649 | const char *retval; |
63d06c5c | 22650 | |
9c37b5ae | 22651 | if (cu->language != language_cplus |
c44af4eb TT |
22652 | && cu->language != language_fortran && cu->language != language_d |
22653 | && cu->language != language_rust) | |
0114d602 DJ |
22654 | return ""; |
22655 | ||
96408a79 SA |
22656 | retval = anonymous_struct_prefix (die, cu); |
22657 | if (retval) | |
22658 | return retval; | |
22659 | ||
0114d602 DJ |
22660 | /* We have to be careful in the presence of DW_AT_specification. |
22661 | For example, with GCC 3.4, given the code | |
22662 | ||
22663 | namespace N { | |
22664 | void foo() { | |
22665 | // Definition of N::foo. | |
22666 | } | |
22667 | } | |
22668 | ||
22669 | then we'll have a tree of DIEs like this: | |
22670 | ||
22671 | 1: DW_TAG_compile_unit | |
22672 | 2: DW_TAG_namespace // N | |
22673 | 3: DW_TAG_subprogram // declaration of N::foo | |
22674 | 4: DW_TAG_subprogram // definition of N::foo | |
22675 | DW_AT_specification // refers to die #3 | |
22676 | ||
22677 | Thus, when processing die #4, we have to pretend that we're in | |
22678 | the context of its DW_AT_specification, namely the contex of die | |
22679 | #3. */ | |
22680 | spec_cu = cu; | |
22681 | spec_die = die_specification (die, &spec_cu); | |
22682 | if (spec_die == NULL) | |
22683 | parent = die->parent; | |
22684 | else | |
63d06c5c | 22685 | { |
0114d602 DJ |
22686 | parent = spec_die->parent; |
22687 | cu = spec_cu; | |
63d06c5c | 22688 | } |
0114d602 DJ |
22689 | |
22690 | if (parent == NULL) | |
22691 | return ""; | |
98bfdba5 PA |
22692 | else if (parent->building_fullname) |
22693 | { | |
22694 | const char *name; | |
22695 | const char *parent_name; | |
22696 | ||
22697 | /* It has been seen on RealView 2.2 built binaries, | |
22698 | DW_TAG_template_type_param types actually _defined_ as | |
22699 | children of the parent class: | |
22700 | ||
22701 | enum E {}; | |
22702 | template class <class Enum> Class{}; | |
22703 | Class<enum E> class_e; | |
22704 | ||
22705 | 1: DW_TAG_class_type (Class) | |
22706 | 2: DW_TAG_enumeration_type (E) | |
22707 | 3: DW_TAG_enumerator (enum1:0) | |
22708 | 3: DW_TAG_enumerator (enum2:1) | |
22709 | ... | |
22710 | 2: DW_TAG_template_type_param | |
22711 | DW_AT_type DW_FORM_ref_udata (E) | |
22712 | ||
22713 | Besides being broken debug info, it can put GDB into an | |
22714 | infinite loop. Consider: | |
22715 | ||
22716 | When we're building the full name for Class<E>, we'll start | |
22717 | at Class, and go look over its template type parameters, | |
22718 | finding E. We'll then try to build the full name of E, and | |
22719 | reach here. We're now trying to build the full name of E, | |
22720 | and look over the parent DIE for containing scope. In the | |
22721 | broken case, if we followed the parent DIE of E, we'd again | |
22722 | find Class, and once again go look at its template type | |
22723 | arguments, etc., etc. Simply don't consider such parent die | |
22724 | as source-level parent of this die (it can't be, the language | |
22725 | doesn't allow it), and break the loop here. */ | |
22726 | name = dwarf2_name (die, cu); | |
22727 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22728 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22729 | name ? name : "<unknown>", |
22730 | parent_name ? parent_name : "<unknown>"); | |
22731 | return ""; | |
22732 | } | |
63d06c5c | 22733 | else |
0114d602 DJ |
22734 | switch (parent->tag) |
22735 | { | |
63d06c5c | 22736 | case DW_TAG_namespace: |
0114d602 | 22737 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22738 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22739 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22740 | Work around this problem here. */ | |
22741 | if (cu->language == language_cplus | |
e86ca25f | 22742 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22743 | return ""; |
0114d602 | 22744 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22745 | return TYPE_NAME (parent_type); |
63d06c5c | 22746 | case DW_TAG_class_type: |
680b30c7 | 22747 | case DW_TAG_interface_type: |
63d06c5c | 22748 | case DW_TAG_structure_type: |
0114d602 | 22749 | case DW_TAG_union_type: |
f55ee35c | 22750 | case DW_TAG_module: |
0114d602 | 22751 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22752 | if (TYPE_NAME (parent_type) != NULL) |
22753 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22754 | else |
22755 | /* An anonymous structure is only allowed non-static data | |
22756 | members; no typedefs, no member functions, et cetera. | |
22757 | So it does not need a prefix. */ | |
22758 | return ""; | |
abc72ce4 | 22759 | case DW_TAG_compile_unit: |
95554aad | 22760 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22761 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22762 | if (cu->language == language_cplus | |
fd5866f6 | 22763 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
22764 | && die->child != NULL |
22765 | && (die->tag == DW_TAG_class_type | |
22766 | || die->tag == DW_TAG_structure_type | |
22767 | || die->tag == DW_TAG_union_type)) | |
22768 | { | |
43816ebc | 22769 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22770 | if (name != NULL) |
22771 | return name; | |
22772 | } | |
22773 | return ""; | |
0a4b0913 AB |
22774 | case DW_TAG_subprogram: |
22775 | /* Nested subroutines in Fortran get a prefix with the name | |
22776 | of the parent's subroutine. */ | |
22777 | if (cu->language == language_fortran) | |
22778 | { | |
22779 | if ((die->tag == DW_TAG_subprogram) | |
22780 | && (dwarf2_name (parent, cu) != NULL)) | |
22781 | return dwarf2_name (parent, cu); | |
22782 | } | |
22783 | return determine_prefix (parent, cu); | |
3d567982 TT |
22784 | case DW_TAG_enumeration_type: |
22785 | parent_type = read_type_die (parent, cu); | |
22786 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22787 | { | |
e86ca25f TT |
22788 | if (TYPE_NAME (parent_type) != NULL) |
22789 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22790 | return ""; |
22791 | } | |
22792 | /* Fall through. */ | |
63d06c5c | 22793 | default: |
8176b9b8 | 22794 | return determine_prefix (parent, cu); |
63d06c5c | 22795 | } |
63d06c5c DC |
22796 | } |
22797 | ||
3e43a32a MS |
22798 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22799 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22800 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22801 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22802 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22803 | |
f55ee35c | 22804 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22805 | |
22806 | static char * | |
f55ee35c JK |
22807 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22808 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22809 | { |
f55ee35c | 22810 | const char *lead = ""; |
5c315b68 | 22811 | const char *sep; |
63d06c5c | 22812 | |
3e43a32a MS |
22813 | if (suffix == NULL || suffix[0] == '\0' |
22814 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22815 | sep = ""; |
45280282 IB |
22816 | else if (cu->language == language_d) |
22817 | { | |
22818 | /* For D, the 'main' function could be defined in any module, but it | |
22819 | should never be prefixed. */ | |
22820 | if (strcmp (suffix, "D main") == 0) | |
22821 | { | |
22822 | prefix = ""; | |
22823 | sep = ""; | |
22824 | } | |
22825 | else | |
22826 | sep = "."; | |
22827 | } | |
f55ee35c JK |
22828 | else if (cu->language == language_fortran && physname) |
22829 | { | |
22830 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22831 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22832 | ||
22833 | lead = "__"; | |
22834 | sep = "_MOD_"; | |
22835 | } | |
987504bb JJ |
22836 | else |
22837 | sep = "::"; | |
63d06c5c | 22838 | |
6dd47d34 DE |
22839 | if (prefix == NULL) |
22840 | prefix = ""; | |
22841 | if (suffix == NULL) | |
22842 | suffix = ""; | |
22843 | ||
987504bb JJ |
22844 | if (obs == NULL) |
22845 | { | |
3e43a32a | 22846 | char *retval |
224c3ddb SM |
22847 | = ((char *) |
22848 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22849 | |
f55ee35c JK |
22850 | strcpy (retval, lead); |
22851 | strcat (retval, prefix); | |
6dd47d34 DE |
22852 | strcat (retval, sep); |
22853 | strcat (retval, suffix); | |
63d06c5c DC |
22854 | return retval; |
22855 | } | |
987504bb JJ |
22856 | else |
22857 | { | |
22858 | /* We have an obstack. */ | |
f55ee35c | 22859 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22860 | } |
63d06c5c DC |
22861 | } |
22862 | ||
c906108c SS |
22863 | /* Return sibling of die, NULL if no sibling. */ |
22864 | ||
f9aca02d | 22865 | static struct die_info * |
fba45db2 | 22866 | sibling_die (struct die_info *die) |
c906108c | 22867 | { |
639d11d3 | 22868 | return die->sibling; |
c906108c SS |
22869 | } |
22870 | ||
71c25dea TT |
22871 | /* Get name of a die, return NULL if not found. */ |
22872 | ||
15d034d0 TT |
22873 | static const char * |
22874 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22875 | struct obstack *obstack) |
22876 | { | |
22877 | if (name && cu->language == language_cplus) | |
22878 | { | |
2f408ecb | 22879 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22880 | |
2f408ecb | 22881 | if (!canon_name.empty ()) |
71c25dea | 22882 | { |
2f408ecb | 22883 | if (canon_name != name) |
efba19b0 | 22884 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
22885 | } |
22886 | } | |
22887 | ||
22888 | return name; | |
c906108c SS |
22889 | } |
22890 | ||
96553a0c DE |
22891 | /* Get name of a die, return NULL if not found. |
22892 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22893 | |
15d034d0 | 22894 | static const char * |
e142c38c | 22895 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22896 | { |
22897 | struct attribute *attr; | |
518817b3 | 22898 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22899 | |
e142c38c | 22900 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22901 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22902 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22903 | && die->tag != DW_TAG_class_type |
22904 | && die->tag != DW_TAG_interface_type | |
22905 | && die->tag != DW_TAG_structure_type | |
22906 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22907 | return NULL; |
22908 | ||
22909 | switch (die->tag) | |
22910 | { | |
22911 | case DW_TAG_compile_unit: | |
95554aad | 22912 | case DW_TAG_partial_unit: |
71c25dea TT |
22913 | /* Compilation units have a DW_AT_name that is a filename, not |
22914 | a source language identifier. */ | |
22915 | case DW_TAG_enumeration_type: | |
22916 | case DW_TAG_enumerator: | |
22917 | /* These tags always have simple identifiers already; no need | |
22918 | to canonicalize them. */ | |
22919 | return DW_STRING (attr); | |
907af001 | 22920 | |
96553a0c DE |
22921 | case DW_TAG_namespace: |
22922 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22923 | return DW_STRING (attr); | |
22924 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22925 | ||
907af001 UW |
22926 | case DW_TAG_class_type: |
22927 | case DW_TAG_interface_type: | |
22928 | case DW_TAG_structure_type: | |
22929 | case DW_TAG_union_type: | |
22930 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22931 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22932 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22933 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22934 | if (attr && DW_STRING (attr) |
61012eef GB |
22935 | && (startswith (DW_STRING (attr), "._") |
22936 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22937 | return NULL; |
53832f31 TT |
22938 | |
22939 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22940 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22941 | if (!attr || DW_STRING (attr) == NULL) | |
22942 | { | |
73b9be8b | 22943 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22944 | if (attr == NULL || DW_STRING (attr) == NULL) |
22945 | return NULL; | |
22946 | ||
df5c6c50 JK |
22947 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22948 | call for the same DIE. */ | |
22949 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22950 | { |
43816ebc TT |
22951 | gdb::unique_xmalloc_ptr<char> demangled |
22952 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
22953 | ||
e6a959d6 | 22954 | const char *base; |
96408a79 | 22955 | |
53832f31 | 22956 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22957 | DW_STRING (attr) |
021887d8 | 22958 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 22959 | demangled.get ()); |
53832f31 | 22960 | DW_STRING_IS_CANONICAL (attr) = 1; |
96408a79 SA |
22961 | |
22962 | /* Strip any leading namespaces/classes, keep only the base name. | |
22963 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22964 | base = strrchr (DW_STRING (attr), ':'); | |
22965 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22966 | return &base[1]; | |
22967 | else | |
22968 | return DW_STRING (attr); | |
53832f31 TT |
22969 | } |
22970 | } | |
907af001 UW |
22971 | break; |
22972 | ||
71c25dea | 22973 | default: |
907af001 UW |
22974 | break; |
22975 | } | |
22976 | ||
22977 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22978 | { | |
22979 | DW_STRING (attr) | |
22980 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22981 | &objfile->per_bfd->storage_obstack); |
907af001 | 22982 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22983 | } |
907af001 | 22984 | return DW_STRING (attr); |
9219021c DC |
22985 | } |
22986 | ||
22987 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22988 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22989 | containing the return value on output. */ | |
9219021c DC |
22990 | |
22991 | static struct die_info * | |
f2f0e013 | 22992 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22993 | { |
22994 | struct attribute *attr; | |
9219021c | 22995 | |
f2f0e013 | 22996 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22997 | if (attr == NULL) |
22998 | return NULL; | |
22999 | ||
f2f0e013 | 23000 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23001 | } |
23002 | ||
fa9c3fa0 TT |
23003 | /* A convenience function that returns an "unknown" DWARF name, |
23004 | including the value of V. STR is the name of the entity being | |
23005 | printed, e.g., "TAG". */ | |
23006 | ||
23007 | static const char * | |
23008 | dwarf_unknown (const char *str, unsigned v) | |
23009 | { | |
23010 | char *cell = get_print_cell (); | |
23011 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
23012 | return cell; | |
23013 | } | |
23014 | ||
c906108c SS |
23015 | /* Convert a DIE tag into its string name. */ |
23016 | ||
f39c6ffd | 23017 | static const char * |
aa1ee363 | 23018 | dwarf_tag_name (unsigned tag) |
c906108c | 23019 | { |
f39c6ffd TT |
23020 | const char *name = get_DW_TAG_name (tag); |
23021 | ||
23022 | if (name == NULL) | |
fa9c3fa0 | 23023 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
23024 | |
23025 | return name; | |
c906108c SS |
23026 | } |
23027 | ||
23028 | /* Convert a DWARF attribute code into its string name. */ | |
23029 | ||
f39c6ffd | 23030 | static const char * |
aa1ee363 | 23031 | dwarf_attr_name (unsigned attr) |
c906108c | 23032 | { |
f39c6ffd TT |
23033 | const char *name; |
23034 | ||
c764a876 | 23035 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
23036 | if (attr == DW_AT_MIPS_fde) |
23037 | return "DW_AT_MIPS_fde"; | |
23038 | #else | |
23039 | if (attr == DW_AT_HP_block_index) | |
23040 | return "DW_AT_HP_block_index"; | |
c764a876 | 23041 | #endif |
f39c6ffd TT |
23042 | |
23043 | name = get_DW_AT_name (attr); | |
23044 | ||
23045 | if (name == NULL) | |
fa9c3fa0 | 23046 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
23047 | |
23048 | return name; | |
c906108c SS |
23049 | } |
23050 | ||
a084a2a6 AT |
23051 | /* Convert a unit type to corresponding DW_UT name. */ |
23052 | ||
23053 | static const char * | |
23054 | dwarf_unit_type_name (int unit_type) { | |
23055 | switch (unit_type) | |
23056 | { | |
23057 | case 0x01: | |
23058 | return "DW_UT_compile (0x01)"; | |
23059 | case 0x02: | |
23060 | return "DW_UT_type (0x02)"; | |
23061 | case 0x03: | |
23062 | return "DW_UT_partial (0x03)"; | |
23063 | case 0x04: | |
23064 | return "DW_UT_skeleton (0x04)"; | |
23065 | case 0x05: | |
23066 | return "DW_UT_split_compile (0x05)"; | |
23067 | case 0x06: | |
23068 | return "DW_UT_split_type (0x06)"; | |
23069 | case 0x80: | |
23070 | return "DW_UT_lo_user (0x80)"; | |
23071 | case 0xff: | |
23072 | return "DW_UT_hi_user (0xff)"; | |
23073 | default: | |
23074 | return nullptr; | |
23075 | } | |
23076 | } | |
23077 | ||
c906108c SS |
23078 | /* Convert a DWARF value form code into its string name. */ |
23079 | ||
f39c6ffd | 23080 | static const char * |
aa1ee363 | 23081 | dwarf_form_name (unsigned form) |
c906108c | 23082 | { |
f39c6ffd TT |
23083 | const char *name = get_DW_FORM_name (form); |
23084 | ||
23085 | if (name == NULL) | |
fa9c3fa0 | 23086 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
23087 | |
23088 | return name; | |
c906108c SS |
23089 | } |
23090 | ||
a121b7c1 | 23091 | static const char * |
fba45db2 | 23092 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
23093 | { |
23094 | if (mybool) | |
23095 | return "TRUE"; | |
23096 | else | |
23097 | return "FALSE"; | |
23098 | } | |
23099 | ||
23100 | /* Convert a DWARF type code into its string name. */ | |
23101 | ||
f39c6ffd | 23102 | static const char * |
aa1ee363 | 23103 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 23104 | { |
f39c6ffd | 23105 | const char *name = get_DW_ATE_name (enc); |
c906108c | 23106 | |
f39c6ffd | 23107 | if (name == NULL) |
fa9c3fa0 | 23108 | return dwarf_unknown ("ATE", enc); |
c906108c | 23109 | |
f39c6ffd | 23110 | return name; |
c906108c | 23111 | } |
c906108c | 23112 | |
f9aca02d | 23113 | static void |
d97bc12b | 23114 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23115 | { |
23116 | unsigned int i; | |
23117 | ||
d97bc12b | 23118 | print_spaces (indent, f); |
9d8780f0 | 23119 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23120 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23121 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23122 | |
23123 | if (die->parent != NULL) | |
23124 | { | |
23125 | print_spaces (indent, f); | |
9d8780f0 SM |
23126 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23127 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23128 | } |
23129 | ||
23130 | print_spaces (indent, f); | |
23131 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23132 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23133 | |
d97bc12b DE |
23134 | print_spaces (indent, f); |
23135 | fprintf_unfiltered (f, " attributes:\n"); | |
23136 | ||
c906108c SS |
23137 | for (i = 0; i < die->num_attrs; ++i) |
23138 | { | |
d97bc12b DE |
23139 | print_spaces (indent, f); |
23140 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23141 | dwarf_attr_name (die->attrs[i].name), |
23142 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23143 | |
c906108c SS |
23144 | switch (die->attrs[i].form) |
23145 | { | |
c906108c | 23146 | case DW_FORM_addr: |
336d760d | 23147 | case DW_FORM_addrx: |
3019eac3 | 23148 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23149 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 23150 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
23151 | break; |
23152 | case DW_FORM_block2: | |
23153 | case DW_FORM_block4: | |
23154 | case DW_FORM_block: | |
23155 | case DW_FORM_block1: | |
56eb65bd SP |
23156 | fprintf_unfiltered (f, "block: size %s", |
23157 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 23158 | break; |
2dc7f7b3 | 23159 | case DW_FORM_exprloc: |
56eb65bd SP |
23160 | fprintf_unfiltered (f, "expression: size %s", |
23161 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 23162 | break; |
0224619f JK |
23163 | case DW_FORM_data16: |
23164 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23165 | break; | |
4568ecf9 DE |
23166 | case DW_FORM_ref_addr: |
23167 | fprintf_unfiltered (f, "ref address: "); | |
23168 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23169 | break; | |
36586728 TT |
23170 | case DW_FORM_GNU_ref_alt: |
23171 | fprintf_unfiltered (f, "alt ref address: "); | |
23172 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23173 | break; | |
10b3939b DJ |
23174 | case DW_FORM_ref1: |
23175 | case DW_FORM_ref2: | |
23176 | case DW_FORM_ref4: | |
4568ecf9 DE |
23177 | case DW_FORM_ref8: |
23178 | case DW_FORM_ref_udata: | |
d97bc12b | 23179 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 23180 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 23181 | break; |
c906108c SS |
23182 | case DW_FORM_data1: |
23183 | case DW_FORM_data2: | |
23184 | case DW_FORM_data4: | |
ce5d95e1 | 23185 | case DW_FORM_data8: |
c906108c SS |
23186 | case DW_FORM_udata: |
23187 | case DW_FORM_sdata: | |
43bbcdc2 PH |
23188 | fprintf_unfiltered (f, "constant: %s", |
23189 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 23190 | break; |
2dc7f7b3 TT |
23191 | case DW_FORM_sec_offset: |
23192 | fprintf_unfiltered (f, "section offset: %s", | |
23193 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23194 | break; | |
55f1336d | 23195 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23196 | fprintf_unfiltered (f, "signature: %s", |
23197 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23198 | break; |
c906108c | 23199 | case DW_FORM_string: |
4bdf3d34 | 23200 | case DW_FORM_strp: |
43988095 | 23201 | case DW_FORM_line_strp: |
cf532bd1 | 23202 | case DW_FORM_strx: |
3019eac3 | 23203 | case DW_FORM_GNU_str_index: |
36586728 | 23204 | case DW_FORM_GNU_strp_alt: |
8285870a | 23205 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23206 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23207 | ? DW_STRING (&die->attrs[i]) : "", |
23208 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23209 | break; |
23210 | case DW_FORM_flag: | |
23211 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23212 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23213 | else |
d97bc12b | 23214 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23215 | break; |
2dc7f7b3 TT |
23216 | case DW_FORM_flag_present: |
23217 | fprintf_unfiltered (f, "flag: TRUE"); | |
23218 | break; | |
a8329558 | 23219 | case DW_FORM_indirect: |
0963b4bd MS |
23220 | /* The reader will have reduced the indirect form to |
23221 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23222 | fprintf_unfiltered (f, |
3e43a32a | 23223 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23224 | break; |
663c44ac JK |
23225 | case DW_FORM_implicit_const: |
23226 | fprintf_unfiltered (f, "constant: %s", | |
23227 | plongest (DW_SND (&die->attrs[i]))); | |
23228 | break; | |
c906108c | 23229 | default: |
d97bc12b | 23230 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23231 | die->attrs[i].form); |
d97bc12b | 23232 | break; |
c906108c | 23233 | } |
d97bc12b | 23234 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23235 | } |
23236 | } | |
23237 | ||
f9aca02d | 23238 | static void |
d97bc12b | 23239 | dump_die_for_error (struct die_info *die) |
c906108c | 23240 | { |
d97bc12b DE |
23241 | dump_die_shallow (gdb_stderr, 0, die); |
23242 | } | |
23243 | ||
23244 | static void | |
23245 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23246 | { | |
23247 | int indent = level * 4; | |
23248 | ||
23249 | gdb_assert (die != NULL); | |
23250 | ||
23251 | if (level >= max_level) | |
23252 | return; | |
23253 | ||
23254 | dump_die_shallow (f, indent, die); | |
23255 | ||
23256 | if (die->child != NULL) | |
c906108c | 23257 | { |
d97bc12b DE |
23258 | print_spaces (indent, f); |
23259 | fprintf_unfiltered (f, " Children:"); | |
23260 | if (level + 1 < max_level) | |
23261 | { | |
23262 | fprintf_unfiltered (f, "\n"); | |
23263 | dump_die_1 (f, level + 1, max_level, die->child); | |
23264 | } | |
23265 | else | |
23266 | { | |
3e43a32a MS |
23267 | fprintf_unfiltered (f, |
23268 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23269 | } |
23270 | } | |
23271 | ||
23272 | if (die->sibling != NULL && level > 0) | |
23273 | { | |
23274 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23275 | } |
23276 | } | |
23277 | ||
d97bc12b DE |
23278 | /* This is called from the pdie macro in gdbinit.in. |
23279 | It's not static so gcc will keep a copy callable from gdb. */ | |
23280 | ||
23281 | void | |
23282 | dump_die (struct die_info *die, int max_level) | |
23283 | { | |
23284 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23285 | } | |
23286 | ||
f9aca02d | 23287 | static void |
51545339 | 23288 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23289 | { |
51545339 | 23290 | void **slot; |
c906108c | 23291 | |
9c541725 PA |
23292 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23293 | to_underlying (die->sect_off), | |
b64f50a1 | 23294 | INSERT); |
51545339 DJ |
23295 | |
23296 | *slot = die; | |
c906108c SS |
23297 | } |
23298 | ||
b64f50a1 JK |
23299 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23300 | required kind. */ | |
23301 | ||
23302 | static sect_offset | |
ff39bb5e | 23303 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23304 | { |
7771576e | 23305 | if (attr_form_is_ref (attr)) |
9c541725 | 23306 | return (sect_offset) DW_UNSND (attr); |
93311388 | 23307 | |
b98664d3 | 23308 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 23309 | dwarf_form_name (attr->form)); |
9c541725 | 23310 | return {}; |
c906108c SS |
23311 | } |
23312 | ||
43bbcdc2 PH |
23313 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23314 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23315 | |
43bbcdc2 | 23316 | static LONGEST |
ff39bb5e | 23317 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23318 | { |
663c44ac | 23319 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23320 | return DW_SND (attr); |
23321 | else if (attr->form == DW_FORM_udata | |
23322 | || attr->form == DW_FORM_data1 | |
23323 | || attr->form == DW_FORM_data2 | |
23324 | || attr->form == DW_FORM_data4 | |
23325 | || attr->form == DW_FORM_data8) | |
23326 | return DW_UNSND (attr); | |
23327 | else | |
23328 | { | |
0224619f | 23329 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 23330 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
23331 | dwarf_form_name (attr->form)); |
23332 | return default_value; | |
23333 | } | |
23334 | } | |
23335 | ||
348e048f DE |
23336 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23337 | On entry *REF_CU is the CU of SRC_DIE. | |
23338 | On exit *REF_CU is the CU of the result. */ | |
23339 | ||
23340 | static struct die_info * | |
ff39bb5e | 23341 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23342 | struct dwarf2_cu **ref_cu) |
23343 | { | |
23344 | struct die_info *die; | |
23345 | ||
7771576e | 23346 | if (attr_form_is_ref (attr)) |
348e048f | 23347 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23348 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23349 | die = follow_die_sig (src_die, attr, ref_cu); |
23350 | else | |
23351 | { | |
23352 | dump_die_for_error (src_die); | |
23353 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23354 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23355 | } |
23356 | ||
23357 | return die; | |
03dd20cc DJ |
23358 | } |
23359 | ||
5c631832 | 23360 | /* Follow reference OFFSET. |
673bfd45 DE |
23361 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23362 | On exit *REF_CU is the CU of the result. | |
23363 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23364 | |
f9aca02d | 23365 | static struct die_info * |
9c541725 | 23366 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23367 | struct dwarf2_cu **ref_cu) |
c906108c | 23368 | { |
10b3939b | 23369 | struct die_info temp_die; |
f2f0e013 | 23370 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23371 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23372 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 23373 | |
348e048f DE |
23374 | gdb_assert (cu->per_cu != NULL); |
23375 | ||
98bfdba5 PA |
23376 | target_cu = cu; |
23377 | ||
3019eac3 | 23378 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23379 | { |
23380 | /* .debug_types CUs cannot reference anything outside their CU. | |
23381 | If they need to, they have to reference a signatured type via | |
55f1336d | 23382 | DW_FORM_ref_sig8. */ |
9c541725 | 23383 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23384 | return NULL; |
348e048f | 23385 | } |
36586728 | 23386 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23387 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23388 | { |
23389 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23390 | |
9c541725 | 23391 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23392 | dwarf2_per_objfile); |
03dd20cc DJ |
23393 | |
23394 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 23395 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 23396 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 23397 | |
10b3939b DJ |
23398 | target_cu = per_cu->cu; |
23399 | } | |
98bfdba5 PA |
23400 | else if (cu->dies == NULL) |
23401 | { | |
23402 | /* We're loading full DIEs during partial symbol reading. */ | |
23403 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23404 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23405 | } |
c906108c | 23406 | |
f2f0e013 | 23407 | *ref_cu = target_cu; |
9c541725 | 23408 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23409 | |
23410 | if (target_cu != cu) | |
23411 | target_cu->ancestor = cu; | |
23412 | ||
9a3c8263 | 23413 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23414 | &temp_die, |
23415 | to_underlying (sect_off)); | |
5c631832 | 23416 | } |
10b3939b | 23417 | |
5c631832 JK |
23418 | /* Follow reference attribute ATTR of SRC_DIE. |
23419 | On entry *REF_CU is the CU of SRC_DIE. | |
23420 | On exit *REF_CU is the CU of the result. */ | |
23421 | ||
23422 | static struct die_info * | |
ff39bb5e | 23423 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23424 | struct dwarf2_cu **ref_cu) |
23425 | { | |
9c541725 | 23426 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23427 | struct dwarf2_cu *cu = *ref_cu; |
23428 | struct die_info *die; | |
23429 | ||
9c541725 | 23430 | die = follow_die_offset (sect_off, |
36586728 TT |
23431 | (attr->form == DW_FORM_GNU_ref_alt |
23432 | || cu->per_cu->is_dwz), | |
23433 | ref_cu); | |
5c631832 | 23434 | if (!die) |
9d8780f0 SM |
23435 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23436 | "at %s [in module %s]"), | |
23437 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23438 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23439 | |
5c631832 JK |
23440 | return die; |
23441 | } | |
23442 | ||
9c541725 | 23443 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23444 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23445 | dwarf2_locexpr_baton->data has lifetime of |
23446 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23447 | |
23448 | struct dwarf2_locexpr_baton | |
9c541725 | 23449 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23450 | struct dwarf2_per_cu_data *per_cu, |
23451 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23452 | void *baton, bool resolve_abstract_p) |
5c631832 | 23453 | { |
918dd910 | 23454 | struct dwarf2_cu *cu; |
5c631832 JK |
23455 | struct die_info *die; |
23456 | struct attribute *attr; | |
23457 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23458 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23459 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23460 | |
918dd910 | 23461 | if (per_cu->cu == NULL) |
58f0c718 | 23462 | load_cu (per_cu, false); |
918dd910 | 23463 | cu = per_cu->cu; |
cc12ce38 DE |
23464 | if (cu == NULL) |
23465 | { | |
23466 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23467 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23468 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23469 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23470 | } |
918dd910 | 23471 | |
9c541725 | 23472 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23473 | if (!die) |
9d8780f0 SM |
23474 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23475 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23476 | |
23477 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23478 | if (!attr && resolve_abstract_p |
3360b6e7 | 23479 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
23480 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
23481 | { | |
23482 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 23483 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 23484 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 23485 | |
3360b6e7 TV |
23486 | for (const auto &cand_off |
23487 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 23488 | { |
3360b6e7 TV |
23489 | struct dwarf2_cu *cand_cu = cu; |
23490 | struct die_info *cand | |
23491 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23492 | if (!cand | |
23493 | || !cand->parent | |
e4a62c65 TV |
23494 | || cand->parent->tag != DW_TAG_subprogram) |
23495 | continue; | |
23496 | ||
23497 | CORE_ADDR pc_low, pc_high; | |
23498 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23499 | if (pc_low == ((CORE_ADDR) -1)) |
23500 | continue; | |
23501 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23502 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23503 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23504 | continue; |
23505 | ||
23506 | die = cand; | |
23507 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23508 | break; | |
23509 | } | |
23510 | } | |
23511 | ||
5c631832 JK |
23512 | if (!attr) |
23513 | { | |
e103e986 JK |
23514 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23515 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23516 | |
e103e986 | 23517 | retval.data = NULL; |
5c631832 JK |
23518 | retval.size = 0; |
23519 | } | |
8cf6f0b1 TT |
23520 | else if (attr_form_is_section_offset (attr)) |
23521 | { | |
23522 | struct dwarf2_loclist_baton loclist_baton; | |
23523 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23524 | size_t size; | |
23525 | ||
23526 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23527 | ||
23528 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23529 | &size, pc); | |
23530 | retval.size = size; | |
23531 | } | |
5c631832 JK |
23532 | else |
23533 | { | |
23534 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23535 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23536 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23537 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23538 | |
23539 | retval.data = DW_BLOCK (attr)->data; | |
23540 | retval.size = DW_BLOCK (attr)->size; | |
23541 | } | |
23542 | retval.per_cu = cu->per_cu; | |
918dd910 | 23543 | |
ed2dc618 | 23544 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23545 | |
5c631832 | 23546 | return retval; |
348e048f DE |
23547 | } |
23548 | ||
8b9737bf TT |
23549 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23550 | offset. */ | |
23551 | ||
23552 | struct dwarf2_locexpr_baton | |
23553 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23554 | struct dwarf2_per_cu_data *per_cu, | |
23555 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23556 | void *baton) | |
23557 | { | |
9c541725 | 23558 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23559 | |
9c541725 | 23560 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23561 | } |
23562 | ||
b6807d98 TT |
23563 | /* Write a constant of a given type as target-ordered bytes into |
23564 | OBSTACK. */ | |
23565 | ||
23566 | static const gdb_byte * | |
23567 | write_constant_as_bytes (struct obstack *obstack, | |
23568 | enum bfd_endian byte_order, | |
23569 | struct type *type, | |
23570 | ULONGEST value, | |
23571 | LONGEST *len) | |
23572 | { | |
23573 | gdb_byte *result; | |
23574 | ||
23575 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23576 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23577 | store_unsigned_integer (result, *len, byte_order, value); |
23578 | ||
23579 | return result; | |
23580 | } | |
23581 | ||
23582 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23583 | pointer to the constant bytes and set LEN to the length of the | |
23584 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23585 | does not have a DW_AT_const_value, return NULL. */ | |
23586 | ||
23587 | const gdb_byte * | |
9c541725 | 23588 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23589 | struct dwarf2_per_cu_data *per_cu, |
23590 | struct obstack *obstack, | |
23591 | LONGEST *len) | |
23592 | { | |
23593 | struct dwarf2_cu *cu; | |
23594 | struct die_info *die; | |
23595 | struct attribute *attr; | |
23596 | const gdb_byte *result = NULL; | |
23597 | struct type *type; | |
23598 | LONGEST value; | |
23599 | enum bfd_endian byte_order; | |
e3b94546 | 23600 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23601 | |
b6807d98 | 23602 | if (per_cu->cu == NULL) |
58f0c718 | 23603 | load_cu (per_cu, false); |
b6807d98 | 23604 | cu = per_cu->cu; |
cc12ce38 DE |
23605 | if (cu == NULL) |
23606 | { | |
23607 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23608 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23609 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23610 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23611 | } |
b6807d98 | 23612 | |
9c541725 | 23613 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23614 | if (!die) |
9d8780f0 SM |
23615 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23616 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23617 | |
23618 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23619 | if (attr == NULL) | |
23620 | return NULL; | |
23621 | ||
e3b94546 | 23622 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23623 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23624 | ||
23625 | switch (attr->form) | |
23626 | { | |
23627 | case DW_FORM_addr: | |
336d760d | 23628 | case DW_FORM_addrx: |
b6807d98 TT |
23629 | case DW_FORM_GNU_addr_index: |
23630 | { | |
23631 | gdb_byte *tem; | |
23632 | ||
23633 | *len = cu->header.addr_size; | |
224c3ddb | 23634 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23635 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23636 | result = tem; | |
23637 | } | |
23638 | break; | |
23639 | case DW_FORM_string: | |
23640 | case DW_FORM_strp: | |
cf532bd1 | 23641 | case DW_FORM_strx: |
b6807d98 TT |
23642 | case DW_FORM_GNU_str_index: |
23643 | case DW_FORM_GNU_strp_alt: | |
23644 | /* DW_STRING is already allocated on the objfile obstack, point | |
23645 | directly to it. */ | |
23646 | result = (const gdb_byte *) DW_STRING (attr); | |
23647 | *len = strlen (DW_STRING (attr)); | |
23648 | break; | |
23649 | case DW_FORM_block1: | |
23650 | case DW_FORM_block2: | |
23651 | case DW_FORM_block4: | |
23652 | case DW_FORM_block: | |
23653 | case DW_FORM_exprloc: | |
0224619f | 23654 | case DW_FORM_data16: |
b6807d98 TT |
23655 | result = DW_BLOCK (attr)->data; |
23656 | *len = DW_BLOCK (attr)->size; | |
23657 | break; | |
23658 | ||
23659 | /* The DW_AT_const_value attributes are supposed to carry the | |
23660 | symbol's value "represented as it would be on the target | |
23661 | architecture." By the time we get here, it's already been | |
23662 | converted to host endianness, so we just need to sign- or | |
23663 | zero-extend it as appropriate. */ | |
23664 | case DW_FORM_data1: | |
23665 | type = die_type (die, cu); | |
23666 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23667 | if (result == NULL) | |
23668 | result = write_constant_as_bytes (obstack, byte_order, | |
23669 | type, value, len); | |
23670 | break; | |
23671 | case DW_FORM_data2: | |
23672 | type = die_type (die, cu); | |
23673 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23674 | if (result == NULL) | |
23675 | result = write_constant_as_bytes (obstack, byte_order, | |
23676 | type, value, len); | |
23677 | break; | |
23678 | case DW_FORM_data4: | |
23679 | type = die_type (die, cu); | |
23680 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23681 | if (result == NULL) | |
23682 | result = write_constant_as_bytes (obstack, byte_order, | |
23683 | type, value, len); | |
23684 | break; | |
23685 | case DW_FORM_data8: | |
23686 | type = die_type (die, cu); | |
23687 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23688 | if (result == NULL) | |
23689 | result = write_constant_as_bytes (obstack, byte_order, | |
23690 | type, value, len); | |
23691 | break; | |
23692 | ||
23693 | case DW_FORM_sdata: | |
663c44ac | 23694 | case DW_FORM_implicit_const: |
b6807d98 TT |
23695 | type = die_type (die, cu); |
23696 | result = write_constant_as_bytes (obstack, byte_order, | |
23697 | type, DW_SND (attr), len); | |
23698 | break; | |
23699 | ||
23700 | case DW_FORM_udata: | |
23701 | type = die_type (die, cu); | |
23702 | result = write_constant_as_bytes (obstack, byte_order, | |
23703 | type, DW_UNSND (attr), len); | |
23704 | break; | |
23705 | ||
23706 | default: | |
b98664d3 | 23707 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23708 | dwarf_form_name (attr->form)); |
23709 | break; | |
23710 | } | |
23711 | ||
23712 | return result; | |
23713 | } | |
23714 | ||
7942e96e AA |
23715 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23716 | valid type for this die is found. */ | |
23717 | ||
23718 | struct type * | |
9c541725 | 23719 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23720 | struct dwarf2_per_cu_data *per_cu) |
23721 | { | |
23722 | struct dwarf2_cu *cu; | |
23723 | struct die_info *die; | |
23724 | ||
7942e96e | 23725 | if (per_cu->cu == NULL) |
58f0c718 | 23726 | load_cu (per_cu, false); |
7942e96e AA |
23727 | cu = per_cu->cu; |
23728 | if (!cu) | |
23729 | return NULL; | |
23730 | ||
9c541725 | 23731 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23732 | if (!die) |
23733 | return NULL; | |
23734 | ||
23735 | return die_type (die, cu); | |
23736 | } | |
23737 | ||
8a9b8146 TT |
23738 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23739 | PER_CU. */ | |
23740 | ||
23741 | struct type * | |
b64f50a1 | 23742 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23743 | struct dwarf2_per_cu_data *per_cu) |
23744 | { | |
9c541725 | 23745 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23746 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23747 | } |
23748 | ||
ac9ec31b | 23749 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23750 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23751 | On exit *REF_CU is the CU of the result. |
23752 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23753 | |
23754 | static struct die_info * | |
ac9ec31b DE |
23755 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23756 | struct dwarf2_cu **ref_cu) | |
348e048f | 23757 | { |
348e048f | 23758 | struct die_info temp_die; |
c24bdb02 | 23759 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23760 | struct die_info *die; |
23761 | ||
ac9ec31b DE |
23762 | /* While it might be nice to assert sig_type->type == NULL here, |
23763 | we can get here for DW_AT_imported_declaration where we need | |
23764 | the DIE not the type. */ | |
348e048f DE |
23765 | |
23766 | /* If necessary, add it to the queue and load its DIEs. */ | |
23767 | ||
95554aad | 23768 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23769 | read_signatured_type (sig_type); |
348e048f | 23770 | |
348e048f | 23771 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23772 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23773 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23774 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23775 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23776 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23777 | if (die) |
23778 | { | |
ed2dc618 | 23779 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23780 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23781 | |
796a7ff8 DE |
23782 | /* For .gdb_index version 7 keep track of included TUs. |
23783 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23784 | if (dwarf2_per_objfile->index_table != NULL | |
23785 | && dwarf2_per_objfile->index_table->version <= 7) | |
23786 | { | |
ae640021 | 23787 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23788 | } |
23789 | ||
348e048f | 23790 | *ref_cu = sig_cu; |
c24bdb02 KS |
23791 | if (sig_cu != cu) |
23792 | sig_cu->ancestor = cu; | |
23793 | ||
348e048f DE |
23794 | return die; |
23795 | } | |
23796 | ||
ac9ec31b DE |
23797 | return NULL; |
23798 | } | |
23799 | ||
23800 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23801 | On entry *REF_CU is the CU of SRC_DIE. | |
23802 | On exit *REF_CU is the CU of the result. | |
23803 | The result is the DIE of the type. | |
23804 | If the referenced type cannot be found an error is thrown. */ | |
23805 | ||
23806 | static struct die_info * | |
ff39bb5e | 23807 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23808 | struct dwarf2_cu **ref_cu) |
23809 | { | |
23810 | ULONGEST signature = DW_SIGNATURE (attr); | |
23811 | struct signatured_type *sig_type; | |
23812 | struct die_info *die; | |
23813 | ||
23814 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23815 | ||
a2ce51a0 | 23816 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23817 | /* sig_type will be NULL if the signatured type is missing from |
23818 | the debug info. */ | |
23819 | if (sig_type == NULL) | |
23820 | { | |
23821 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23822 | " from DIE at %s [in module %s]"), |
23823 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23824 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23825 | } |
23826 | ||
23827 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23828 | if (die == NULL) | |
23829 | { | |
23830 | dump_die_for_error (src_die); | |
23831 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23832 | " from DIE at %s [in module %s]"), |
23833 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23834 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23835 | } |
23836 | ||
23837 | return die; | |
23838 | } | |
23839 | ||
23840 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23841 | reading in and processing the type unit if necessary. */ | |
23842 | ||
23843 | static struct type * | |
23844 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23845 | struct dwarf2_cu *cu) | |
23846 | { | |
518817b3 SM |
23847 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23848 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23849 | struct signatured_type *sig_type; |
23850 | struct dwarf2_cu *type_cu; | |
23851 | struct die_info *type_die; | |
23852 | struct type *type; | |
23853 | ||
a2ce51a0 | 23854 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23855 | /* sig_type will be NULL if the signatured type is missing from |
23856 | the debug info. */ | |
23857 | if (sig_type == NULL) | |
23858 | { | |
b98664d3 | 23859 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23860 | " from DIE at %s [in module %s]"), |
23861 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23862 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23863 | return build_error_marker_type (cu, die); |
23864 | } | |
23865 | ||
23866 | /* If we already know the type we're done. */ | |
23867 | if (sig_type->type != NULL) | |
23868 | return sig_type->type; | |
23869 | ||
23870 | type_cu = cu; | |
23871 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23872 | if (type_die != NULL) | |
23873 | { | |
23874 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23875 | is created. This is important, for example, because for c++ classes | |
23876 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23877 | type = read_type_die (type_die, type_cu); | |
23878 | if (type == NULL) | |
23879 | { | |
b98664d3 | 23880 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23881 | " referenced from DIE at %s [in module %s]"), |
23882 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23883 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23884 | type = build_error_marker_type (cu, die); |
23885 | } | |
23886 | } | |
23887 | else | |
23888 | { | |
b98664d3 | 23889 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23890 | " from DIE at %s [in module %s]"), |
23891 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23892 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23893 | type = build_error_marker_type (cu, die); |
23894 | } | |
23895 | sig_type->type = type; | |
23896 | ||
23897 | return type; | |
23898 | } | |
23899 | ||
23900 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23901 | reading in and processing the type unit if necessary. */ | |
23902 | ||
23903 | static struct type * | |
ff39bb5e | 23904 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23905 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23906 | { |
23907 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23908 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23909 | { |
23910 | struct dwarf2_cu *type_cu = cu; | |
23911 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23912 | ||
23913 | return read_type_die (type_die, type_cu); | |
23914 | } | |
23915 | else if (attr->form == DW_FORM_ref_sig8) | |
23916 | { | |
23917 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23918 | } | |
23919 | else | |
23920 | { | |
518817b3 SM |
23921 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23922 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23923 | |
b98664d3 | 23924 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23925 | " at %s [in module %s]"), |
23926 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23927 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23928 | return build_error_marker_type (cu, die); |
23929 | } | |
348e048f DE |
23930 | } |
23931 | ||
e5fe5e75 | 23932 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23933 | |
23934 | static void | |
e5fe5e75 | 23935 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23936 | { |
52dc124a | 23937 | struct signatured_type *sig_type; |
348e048f | 23938 | |
f4dc4d17 DE |
23939 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23940 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23941 | ||
6721b2ec DE |
23942 | /* We have the per_cu, but we need the signatured_type. |
23943 | Fortunately this is an easy translation. */ | |
23944 | gdb_assert (per_cu->is_debug_types); | |
23945 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23946 | |
6721b2ec | 23947 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23948 | |
52dc124a | 23949 | read_signatured_type (sig_type); |
348e048f | 23950 | |
6721b2ec | 23951 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23952 | } |
23953 | ||
3019eac3 DE |
23954 | /* Read in a signatured type and build its CU and DIEs. |
23955 | If the type is a stub for the real type in a DWO file, | |
23956 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23957 | |
23958 | static void | |
23959 | read_signatured_type (struct signatured_type *sig_type) | |
23960 | { | |
23961 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23962 | |
3019eac3 | 23963 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23964 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23965 | |
c0ab21c2 TT |
23966 | cutu_reader reader (per_cu, NULL, 0, 1, false); |
23967 | ||
23968 | if (!reader.dummy_p) | |
23969 | { | |
23970 | struct dwarf2_cu *cu = reader.cu; | |
23971 | const gdb_byte *info_ptr = reader.info_ptr; | |
23972 | ||
23973 | gdb_assert (cu->die_hash == NULL); | |
23974 | cu->die_hash = | |
23975 | htab_create_alloc_ex (cu->header.length / 12, | |
23976 | die_hash, | |
23977 | die_eq, | |
23978 | NULL, | |
23979 | &cu->comp_unit_obstack, | |
23980 | hashtab_obstack_allocate, | |
23981 | dummy_obstack_deallocate); | |
23982 | ||
23983 | if (reader.has_children) | |
23984 | reader.comp_unit_die->child | |
23985 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23986 | reader.comp_unit_die); | |
23987 | cu->dies = reader.comp_unit_die; | |
23988 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23989 | ||
23990 | /* We try not to read any attributes in this function, because | |
23991 | not all CUs needed for references have been loaded yet, and | |
23992 | symbol table processing isn't initialized. But we have to | |
23993 | set the CU language, or we won't be able to build types | |
23994 | correctly. Similarly, if we do not read the producer, we can | |
23995 | not apply producer-specific interpretation. */ | |
23996 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
23997 | } | |
23998 | ||
7ee85ab1 | 23999 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24000 | } |
24001 | ||
c906108c SS |
24002 | /* Decode simple location descriptions. |
24003 | Given a pointer to a dwarf block that defines a location, compute | |
24004 | the location and return the value. | |
24005 | ||
4cecd739 DJ |
24006 | NOTE drow/2003-11-18: This function is called in two situations |
24007 | now: for the address of static or global variables (partial symbols | |
24008 | only) and for offsets into structures which are expected to be | |
24009 | (more or less) constant. The partial symbol case should go away, | |
24010 | and only the constant case should remain. That will let this | |
24011 | function complain more accurately. A few special modes are allowed | |
24012 | without complaint for global variables (for instance, global | |
24013 | register values and thread-local values). | |
c906108c SS |
24014 | |
24015 | A location description containing no operations indicates that the | |
4cecd739 | 24016 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
24017 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
24018 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
24019 | complaint. |
24020 | ||
24021 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
24022 | |
24023 | static CORE_ADDR | |
e7c27a73 | 24024 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 24025 | { |
518817b3 | 24026 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
24027 | size_t i; |
24028 | size_t size = blk->size; | |
d521ce57 | 24029 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24030 | CORE_ADDR stack[64]; |
24031 | int stacki; | |
24032 | unsigned int bytes_read, unsnd; | |
24033 | gdb_byte op; | |
c906108c | 24034 | |
21ae7a4d JK |
24035 | i = 0; |
24036 | stacki = 0; | |
24037 | stack[stacki] = 0; | |
24038 | stack[++stacki] = 0; | |
24039 | ||
24040 | while (i < size) | |
24041 | { | |
24042 | op = data[i++]; | |
24043 | switch (op) | |
24044 | { | |
24045 | case DW_OP_lit0: | |
24046 | case DW_OP_lit1: | |
24047 | case DW_OP_lit2: | |
24048 | case DW_OP_lit3: | |
24049 | case DW_OP_lit4: | |
24050 | case DW_OP_lit5: | |
24051 | case DW_OP_lit6: | |
24052 | case DW_OP_lit7: | |
24053 | case DW_OP_lit8: | |
24054 | case DW_OP_lit9: | |
24055 | case DW_OP_lit10: | |
24056 | case DW_OP_lit11: | |
24057 | case DW_OP_lit12: | |
24058 | case DW_OP_lit13: | |
24059 | case DW_OP_lit14: | |
24060 | case DW_OP_lit15: | |
24061 | case DW_OP_lit16: | |
24062 | case DW_OP_lit17: | |
24063 | case DW_OP_lit18: | |
24064 | case DW_OP_lit19: | |
24065 | case DW_OP_lit20: | |
24066 | case DW_OP_lit21: | |
24067 | case DW_OP_lit22: | |
24068 | case DW_OP_lit23: | |
24069 | case DW_OP_lit24: | |
24070 | case DW_OP_lit25: | |
24071 | case DW_OP_lit26: | |
24072 | case DW_OP_lit27: | |
24073 | case DW_OP_lit28: | |
24074 | case DW_OP_lit29: | |
24075 | case DW_OP_lit30: | |
24076 | case DW_OP_lit31: | |
24077 | stack[++stacki] = op - DW_OP_lit0; | |
24078 | break; | |
f1bea926 | 24079 | |
21ae7a4d JK |
24080 | case DW_OP_reg0: |
24081 | case DW_OP_reg1: | |
24082 | case DW_OP_reg2: | |
24083 | case DW_OP_reg3: | |
24084 | case DW_OP_reg4: | |
24085 | case DW_OP_reg5: | |
24086 | case DW_OP_reg6: | |
24087 | case DW_OP_reg7: | |
24088 | case DW_OP_reg8: | |
24089 | case DW_OP_reg9: | |
24090 | case DW_OP_reg10: | |
24091 | case DW_OP_reg11: | |
24092 | case DW_OP_reg12: | |
24093 | case DW_OP_reg13: | |
24094 | case DW_OP_reg14: | |
24095 | case DW_OP_reg15: | |
24096 | case DW_OP_reg16: | |
24097 | case DW_OP_reg17: | |
24098 | case DW_OP_reg18: | |
24099 | case DW_OP_reg19: | |
24100 | case DW_OP_reg20: | |
24101 | case DW_OP_reg21: | |
24102 | case DW_OP_reg22: | |
24103 | case DW_OP_reg23: | |
24104 | case DW_OP_reg24: | |
24105 | case DW_OP_reg25: | |
24106 | case DW_OP_reg26: | |
24107 | case DW_OP_reg27: | |
24108 | case DW_OP_reg28: | |
24109 | case DW_OP_reg29: | |
24110 | case DW_OP_reg30: | |
24111 | case DW_OP_reg31: | |
24112 | stack[++stacki] = op - DW_OP_reg0; | |
24113 | if (i < size) | |
24114 | dwarf2_complex_location_expr_complaint (); | |
24115 | break; | |
c906108c | 24116 | |
21ae7a4d JK |
24117 | case DW_OP_regx: |
24118 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24119 | i += bytes_read; | |
24120 | stack[++stacki] = unsnd; | |
24121 | if (i < size) | |
24122 | dwarf2_complex_location_expr_complaint (); | |
24123 | break; | |
c906108c | 24124 | |
21ae7a4d JK |
24125 | case DW_OP_addr: |
24126 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
24127 | cu, &bytes_read); | |
24128 | i += bytes_read; | |
24129 | break; | |
d53d4ac5 | 24130 | |
21ae7a4d JK |
24131 | case DW_OP_const1u: |
24132 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24133 | i += 1; | |
24134 | break; | |
24135 | ||
24136 | case DW_OP_const1s: | |
24137 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24138 | i += 1; | |
24139 | break; | |
24140 | ||
24141 | case DW_OP_const2u: | |
24142 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24143 | i += 2; | |
24144 | break; | |
24145 | ||
24146 | case DW_OP_const2s: | |
24147 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24148 | i += 2; | |
24149 | break; | |
d53d4ac5 | 24150 | |
21ae7a4d JK |
24151 | case DW_OP_const4u: |
24152 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24153 | i += 4; | |
24154 | break; | |
24155 | ||
24156 | case DW_OP_const4s: | |
24157 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24158 | i += 4; | |
24159 | break; | |
24160 | ||
585861ea JK |
24161 | case DW_OP_const8u: |
24162 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24163 | i += 8; | |
24164 | break; | |
24165 | ||
21ae7a4d JK |
24166 | case DW_OP_constu: |
24167 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24168 | &bytes_read); | |
24169 | i += bytes_read; | |
24170 | break; | |
24171 | ||
24172 | case DW_OP_consts: | |
24173 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24174 | i += bytes_read; | |
24175 | break; | |
24176 | ||
24177 | case DW_OP_dup: | |
24178 | stack[stacki + 1] = stack[stacki]; | |
24179 | stacki++; | |
24180 | break; | |
24181 | ||
24182 | case DW_OP_plus: | |
24183 | stack[stacki - 1] += stack[stacki]; | |
24184 | stacki--; | |
24185 | break; | |
24186 | ||
24187 | case DW_OP_plus_uconst: | |
24188 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24189 | &bytes_read); | |
24190 | i += bytes_read; | |
24191 | break; | |
24192 | ||
24193 | case DW_OP_minus: | |
24194 | stack[stacki - 1] -= stack[stacki]; | |
24195 | stacki--; | |
24196 | break; | |
24197 | ||
24198 | case DW_OP_deref: | |
24199 | /* If we're not the last op, then we definitely can't encode | |
24200 | this using GDB's address_class enum. This is valid for partial | |
24201 | global symbols, although the variable's address will be bogus | |
24202 | in the psymtab. */ | |
24203 | if (i < size) | |
24204 | dwarf2_complex_location_expr_complaint (); | |
24205 | break; | |
24206 | ||
24207 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24208 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24209 | /* The top of the stack has the offset from the beginning |
24210 | of the thread control block at which the variable is located. */ | |
24211 | /* Nothing should follow this operator, so the top of stack would | |
24212 | be returned. */ | |
24213 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24214 | address will be bogus in the psymtab. Make it always at least |
24215 | non-zero to not look as a variable garbage collected by linker | |
24216 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24217 | if (i < size) |
24218 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24219 | stack[stacki]++; |
21ae7a4d JK |
24220 | break; |
24221 | ||
24222 | case DW_OP_GNU_uninit: | |
24223 | break; | |
24224 | ||
336d760d | 24225 | case DW_OP_addrx: |
3019eac3 | 24226 | case DW_OP_GNU_addr_index: |
49f6c839 | 24227 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24228 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24229 | &bytes_read); | |
24230 | i += bytes_read; | |
24231 | break; | |
24232 | ||
21ae7a4d JK |
24233 | default: |
24234 | { | |
f39c6ffd | 24235 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24236 | |
24237 | if (name) | |
b98664d3 | 24238 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
24239 | name); |
24240 | else | |
b98664d3 | 24241 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
24242 | op); |
24243 | } | |
24244 | ||
24245 | return (stack[stacki]); | |
d53d4ac5 | 24246 | } |
3c6e0cb3 | 24247 | |
21ae7a4d JK |
24248 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24249 | outside of the allocated space. Also enforce minimum>0. */ | |
24250 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24251 | { | |
b98664d3 | 24252 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
24253 | return 0; |
24254 | } | |
24255 | ||
24256 | if (stacki <= 0) | |
24257 | { | |
b98664d3 | 24258 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
24259 | return 0; |
24260 | } | |
24261 | } | |
24262 | return (stack[stacki]); | |
c906108c SS |
24263 | } |
24264 | ||
24265 | /* memory allocation interface */ | |
24266 | ||
c906108c | 24267 | static struct dwarf_block * |
7b5a2f43 | 24268 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24269 | { |
8d749320 | 24270 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24271 | } |
24272 | ||
c906108c | 24273 | static struct die_info * |
b60c80d6 | 24274 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24275 | { |
24276 | struct die_info *die; | |
b60c80d6 DJ |
24277 | size_t size = sizeof (struct die_info); |
24278 | ||
24279 | if (num_attrs > 1) | |
24280 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24281 | |
b60c80d6 | 24282 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24283 | memset (die, 0, sizeof (struct die_info)); |
24284 | return (die); | |
24285 | } | |
2e276125 JB |
24286 | |
24287 | \f | |
24288 | /* Macro support. */ | |
24289 | ||
233d95b5 JK |
24290 | /* Return file name relative to the compilation directory of file number I in |
24291 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24292 | responsible for freeing it. */ |
233d95b5 | 24293 | |
2e276125 | 24294 | static char * |
233d95b5 | 24295 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24296 | { |
6a83a1e6 EZ |
24297 | /* Is the file number a valid index into the line header's file name |
24298 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 24299 | if (lh->is_valid_file_index (file)) |
6a83a1e6 | 24300 | { |
7ba99d21 | 24301 | const file_entry *fe = lh->file_name_at (file); |
6e70227d | 24302 | |
7ba99d21 | 24303 | if (!IS_ABSOLUTE_PATH (fe->name)) |
8c43009f | 24304 | { |
7ba99d21 | 24305 | const char *dir = fe->include_dir (lh); |
8c43009f | 24306 | if (dir != NULL) |
7ba99d21 | 24307 | return concat (dir, SLASH_STRING, fe->name, (char *) NULL); |
8c43009f | 24308 | } |
7ba99d21 | 24309 | return xstrdup (fe->name); |
6a83a1e6 | 24310 | } |
2e276125 JB |
24311 | else |
24312 | { | |
6a83a1e6 EZ |
24313 | /* The compiler produced a bogus file number. We can at least |
24314 | record the macro definitions made in the file, even if we | |
24315 | won't be able to find the file by name. */ | |
24316 | char fake_name[80]; | |
9a619af0 | 24317 | |
8c042590 PM |
24318 | xsnprintf (fake_name, sizeof (fake_name), |
24319 | "<bad macro file number %d>", file); | |
2e276125 | 24320 | |
b98664d3 | 24321 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 24322 | file); |
2e276125 | 24323 | |
6a83a1e6 | 24324 | return xstrdup (fake_name); |
2e276125 JB |
24325 | } |
24326 | } | |
24327 | ||
233d95b5 JK |
24328 | /* Return the full name of file number I in *LH's file name table. |
24329 | Use COMP_DIR as the name of the current directory of the | |
24330 | compilation. The result is allocated using xmalloc; the caller is | |
24331 | responsible for freeing it. */ | |
24332 | static char * | |
24333 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24334 | { | |
24335 | /* Is the file number a valid index into the line header's file name | |
24336 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 24337 | if (lh->is_valid_file_index (file)) |
233d95b5 JK |
24338 | { |
24339 | char *relative = file_file_name (file, lh); | |
24340 | ||
24341 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24342 | return relative; | |
b36cec19 PA |
24343 | return reconcat (relative, comp_dir, SLASH_STRING, |
24344 | relative, (char *) NULL); | |
233d95b5 JK |
24345 | } |
24346 | else | |
24347 | return file_file_name (file, lh); | |
24348 | } | |
24349 | ||
2e276125 JB |
24350 | |
24351 | static struct macro_source_file * | |
804d2729 TT |
24352 | macro_start_file (struct dwarf2_cu *cu, |
24353 | int file, int line, | |
2e276125 | 24354 | struct macro_source_file *current_file, |
43f3e411 | 24355 | struct line_header *lh) |
2e276125 | 24356 | { |
233d95b5 JK |
24357 | /* File name relative to the compilation directory of this source file. */ |
24358 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24359 | |
2e276125 | 24360 | if (! current_file) |
abc9d0dc | 24361 | { |
fc474241 DE |
24362 | /* Note: We don't create a macro table for this compilation unit |
24363 | at all until we actually get a filename. */ | |
c24bdb02 | 24364 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 24365 | |
abc9d0dc TT |
24366 | /* If we have no current file, then this must be the start_file |
24367 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24368 | current_file = macro_set_main (macro_table, file_name); |
24369 | macro_define_special (macro_table); | |
abc9d0dc | 24370 | } |
2e276125 | 24371 | else |
233d95b5 | 24372 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24373 | |
233d95b5 | 24374 | xfree (file_name); |
6e70227d | 24375 | |
2e276125 JB |
24376 | return current_file; |
24377 | } | |
24378 | ||
2e276125 JB |
24379 | static const char * |
24380 | consume_improper_spaces (const char *p, const char *body) | |
24381 | { | |
24382 | if (*p == ' ') | |
24383 | { | |
b98664d3 | 24384 | complaint (_("macro definition contains spaces " |
3e43a32a | 24385 | "in formal argument list:\n`%s'"), |
4d3c2250 | 24386 | body); |
2e276125 JB |
24387 | |
24388 | while (*p == ' ') | |
24389 | p++; | |
24390 | } | |
24391 | ||
24392 | return p; | |
24393 | } | |
24394 | ||
24395 | ||
24396 | static void | |
24397 | parse_macro_definition (struct macro_source_file *file, int line, | |
24398 | const char *body) | |
24399 | { | |
24400 | const char *p; | |
24401 | ||
24402 | /* The body string takes one of two forms. For object-like macro | |
24403 | definitions, it should be: | |
24404 | ||
24405 | <macro name> " " <definition> | |
24406 | ||
24407 | For function-like macro definitions, it should be: | |
24408 | ||
24409 | <macro name> "() " <definition> | |
24410 | or | |
24411 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24412 | ||
24413 | Spaces may appear only where explicitly indicated, and in the | |
24414 | <definition>. | |
24415 | ||
24416 | The Dwarf 2 spec says that an object-like macro's name is always | |
24417 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24418 | the space when the macro's definition is the empty string. |
2e276125 JB |
24419 | |
24420 | The Dwarf 2 spec says that there should be no spaces between the | |
24421 | formal arguments in a function-like macro's formal argument list, | |
24422 | but versions of GCC around March 2002 include spaces after the | |
24423 | commas. */ | |
24424 | ||
24425 | ||
24426 | /* Find the extent of the macro name. The macro name is terminated | |
24427 | by either a space or null character (for an object-like macro) or | |
24428 | an opening paren (for a function-like macro). */ | |
24429 | for (p = body; *p; p++) | |
24430 | if (*p == ' ' || *p == '(') | |
24431 | break; | |
24432 | ||
24433 | if (*p == ' ' || *p == '\0') | |
24434 | { | |
24435 | /* It's an object-like macro. */ | |
24436 | int name_len = p - body; | |
456e800a | 24437 | std::string name (body, name_len); |
2e276125 JB |
24438 | const char *replacement; |
24439 | ||
24440 | if (*p == ' ') | |
24441 | replacement = body + name_len + 1; | |
24442 | else | |
24443 | { | |
4d3c2250 | 24444 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24445 | replacement = body + name_len; |
24446 | } | |
6e70227d | 24447 | |
456e800a | 24448 | macro_define_object (file, line, name.c_str (), replacement); |
2e276125 JB |
24449 | } |
24450 | else if (*p == '(') | |
24451 | { | |
24452 | /* It's a function-like macro. */ | |
456e800a | 24453 | std::string name (body, p - body); |
2e276125 JB |
24454 | int argc = 0; |
24455 | int argv_size = 1; | |
8d749320 | 24456 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24457 | |
24458 | p++; | |
24459 | ||
24460 | p = consume_improper_spaces (p, body); | |
24461 | ||
24462 | /* Parse the formal argument list. */ | |
24463 | while (*p && *p != ')') | |
24464 | { | |
24465 | /* Find the extent of the current argument name. */ | |
24466 | const char *arg_start = p; | |
24467 | ||
24468 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24469 | p++; | |
24470 | ||
24471 | if (! *p || p == arg_start) | |
4d3c2250 | 24472 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24473 | else |
24474 | { | |
24475 | /* Make sure argv has room for the new argument. */ | |
24476 | if (argc >= argv_size) | |
24477 | { | |
24478 | argv_size *= 2; | |
224c3ddb | 24479 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24480 | } |
24481 | ||
3f8a7804 | 24482 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24483 | } |
24484 | ||
24485 | p = consume_improper_spaces (p, body); | |
24486 | ||
24487 | /* Consume the comma, if present. */ | |
24488 | if (*p == ',') | |
24489 | { | |
24490 | p++; | |
24491 | ||
24492 | p = consume_improper_spaces (p, body); | |
24493 | } | |
24494 | } | |
24495 | ||
24496 | if (*p == ')') | |
24497 | { | |
24498 | p++; | |
24499 | ||
24500 | if (*p == ' ') | |
24501 | /* Perfectly formed definition, no complaints. */ | |
456e800a | 24502 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24503 | argc, (const char **) argv, |
2e276125 JB |
24504 | p + 1); |
24505 | else if (*p == '\0') | |
24506 | { | |
24507 | /* Complain, but do define it. */ | |
4d3c2250 | 24508 | dwarf2_macro_malformed_definition_complaint (body); |
456e800a | 24509 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24510 | argc, (const char **) argv, |
2e276125 JB |
24511 | p); |
24512 | } | |
24513 | else | |
24514 | /* Just complain. */ | |
4d3c2250 | 24515 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24516 | } |
24517 | else | |
24518 | /* Just complain. */ | |
4d3c2250 | 24519 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24520 | |
2e276125 JB |
24521 | { |
24522 | int i; | |
24523 | ||
24524 | for (i = 0; i < argc; i++) | |
24525 | xfree (argv[i]); | |
24526 | } | |
24527 | xfree (argv); | |
24528 | } | |
24529 | else | |
4d3c2250 | 24530 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24531 | } |
24532 | ||
cf2c3c16 TT |
24533 | /* Skip some bytes from BYTES according to the form given in FORM. |
24534 | Returns the new pointer. */ | |
2e276125 | 24535 | |
d521ce57 TT |
24536 | static const gdb_byte * |
24537 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24538 | enum dwarf_form form, |
24539 | unsigned int offset_size, | |
24540 | struct dwarf2_section_info *section) | |
2e276125 | 24541 | { |
cf2c3c16 | 24542 | unsigned int bytes_read; |
2e276125 | 24543 | |
cf2c3c16 | 24544 | switch (form) |
2e276125 | 24545 | { |
cf2c3c16 TT |
24546 | case DW_FORM_data1: |
24547 | case DW_FORM_flag: | |
24548 | ++bytes; | |
24549 | break; | |
24550 | ||
24551 | case DW_FORM_data2: | |
24552 | bytes += 2; | |
24553 | break; | |
24554 | ||
24555 | case DW_FORM_data4: | |
24556 | bytes += 4; | |
24557 | break; | |
24558 | ||
24559 | case DW_FORM_data8: | |
24560 | bytes += 8; | |
24561 | break; | |
24562 | ||
0224619f JK |
24563 | case DW_FORM_data16: |
24564 | bytes += 16; | |
24565 | break; | |
24566 | ||
cf2c3c16 TT |
24567 | case DW_FORM_string: |
24568 | read_direct_string (abfd, bytes, &bytes_read); | |
24569 | bytes += bytes_read; | |
24570 | break; | |
24571 | ||
24572 | case DW_FORM_sec_offset: | |
24573 | case DW_FORM_strp: | |
36586728 | 24574 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24575 | bytes += offset_size; |
24576 | break; | |
24577 | ||
24578 | case DW_FORM_block: | |
24579 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24580 | bytes += bytes_read; | |
24581 | break; | |
24582 | ||
24583 | case DW_FORM_block1: | |
24584 | bytes += 1 + read_1_byte (abfd, bytes); | |
24585 | break; | |
24586 | case DW_FORM_block2: | |
24587 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24588 | break; | |
24589 | case DW_FORM_block4: | |
24590 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24591 | break; | |
24592 | ||
336d760d | 24593 | case DW_FORM_addrx: |
cf2c3c16 | 24594 | case DW_FORM_sdata: |
cf532bd1 | 24595 | case DW_FORM_strx: |
cf2c3c16 | 24596 | case DW_FORM_udata: |
3019eac3 DE |
24597 | case DW_FORM_GNU_addr_index: |
24598 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24599 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24600 | if (bytes == NULL) |
24601 | { | |
24602 | dwarf2_section_buffer_overflow_complaint (section); | |
24603 | return NULL; | |
24604 | } | |
cf2c3c16 TT |
24605 | break; |
24606 | ||
663c44ac JK |
24607 | case DW_FORM_implicit_const: |
24608 | break; | |
24609 | ||
cf2c3c16 TT |
24610 | default: |
24611 | { | |
b98664d3 | 24612 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24613 | form, get_section_name (section)); |
cf2c3c16 TT |
24614 | return NULL; |
24615 | } | |
2e276125 JB |
24616 | } |
24617 | ||
cf2c3c16 TT |
24618 | return bytes; |
24619 | } | |
757a13d0 | 24620 | |
cf2c3c16 TT |
24621 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24622 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24623 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24624 | |
d521ce57 | 24625 | static const gdb_byte * |
cf2c3c16 | 24626 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24627 | const gdb_byte **opcode_definitions, |
24628 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24629 | bfd *abfd, |
24630 | unsigned int offset_size, | |
24631 | struct dwarf2_section_info *section) | |
24632 | { | |
24633 | unsigned int bytes_read, i; | |
24634 | unsigned long arg; | |
d521ce57 | 24635 | const gdb_byte *defn; |
2e276125 | 24636 | |
cf2c3c16 | 24637 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24638 | { |
b98664d3 | 24639 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24640 | opcode); |
24641 | return NULL; | |
24642 | } | |
2e276125 | 24643 | |
cf2c3c16 TT |
24644 | defn = opcode_definitions[opcode]; |
24645 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24646 | defn += bytes_read; | |
2e276125 | 24647 | |
cf2c3c16 TT |
24648 | for (i = 0; i < arg; ++i) |
24649 | { | |
aead7601 SM |
24650 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24651 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24652 | section); |
cf2c3c16 TT |
24653 | if (mac_ptr == NULL) |
24654 | { | |
24655 | /* skip_form_bytes already issued the complaint. */ | |
24656 | return NULL; | |
24657 | } | |
24658 | } | |
757a13d0 | 24659 | |
cf2c3c16 TT |
24660 | return mac_ptr; |
24661 | } | |
757a13d0 | 24662 | |
cf2c3c16 TT |
24663 | /* A helper function which parses the header of a macro section. |
24664 | If the macro section is the extended (for now called "GNU") type, | |
24665 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24666 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24667 | |
d521ce57 TT |
24668 | static const gdb_byte * |
24669 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24670 | bfd *abfd, |
d521ce57 | 24671 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24672 | unsigned int *offset_size, |
24673 | int section_is_gnu) | |
24674 | { | |
24675 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24676 | |
cf2c3c16 TT |
24677 | if (section_is_gnu) |
24678 | { | |
24679 | unsigned int version, flags; | |
757a13d0 | 24680 | |
cf2c3c16 | 24681 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24682 | if (version != 4 && version != 5) |
cf2c3c16 | 24683 | { |
b98664d3 | 24684 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24685 | version); |
24686 | return NULL; | |
24687 | } | |
24688 | mac_ptr += 2; | |
757a13d0 | 24689 | |
cf2c3c16 TT |
24690 | flags = read_1_byte (abfd, mac_ptr); |
24691 | ++mac_ptr; | |
24692 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24693 | |
cf2c3c16 TT |
24694 | if ((flags & 2) != 0) |
24695 | /* We don't need the line table offset. */ | |
24696 | mac_ptr += *offset_size; | |
757a13d0 | 24697 | |
cf2c3c16 TT |
24698 | /* Vendor opcode descriptions. */ |
24699 | if ((flags & 4) != 0) | |
24700 | { | |
24701 | unsigned int i, count; | |
757a13d0 | 24702 | |
cf2c3c16 TT |
24703 | count = read_1_byte (abfd, mac_ptr); |
24704 | ++mac_ptr; | |
24705 | for (i = 0; i < count; ++i) | |
24706 | { | |
24707 | unsigned int opcode, bytes_read; | |
24708 | unsigned long arg; | |
24709 | ||
24710 | opcode = read_1_byte (abfd, mac_ptr); | |
24711 | ++mac_ptr; | |
24712 | opcode_definitions[opcode] = mac_ptr; | |
24713 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24714 | mac_ptr += bytes_read; | |
24715 | mac_ptr += arg; | |
24716 | } | |
757a13d0 | 24717 | } |
cf2c3c16 | 24718 | } |
757a13d0 | 24719 | |
cf2c3c16 TT |
24720 | return mac_ptr; |
24721 | } | |
757a13d0 | 24722 | |
cf2c3c16 | 24723 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24724 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24725 | |
24726 | static void | |
804d2729 | 24727 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24728 | bfd *abfd, |
d521ce57 | 24729 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24730 | struct macro_source_file *current_file, |
43f3e411 | 24731 | struct line_header *lh, |
cf2c3c16 | 24732 | struct dwarf2_section_info *section, |
36586728 | 24733 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24734 | unsigned int offset_size, |
8fc3fc34 | 24735 | htab_t include_hash) |
cf2c3c16 | 24736 | { |
804d2729 TT |
24737 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24738 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24739 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24740 | enum dwarf_macro_record_type macinfo_type; |
24741 | int at_commandline; | |
d521ce57 | 24742 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24743 | |
cf2c3c16 TT |
24744 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24745 | &offset_size, section_is_gnu); | |
24746 | if (mac_ptr == NULL) | |
24747 | { | |
24748 | /* We already issued a complaint. */ | |
24749 | return; | |
24750 | } | |
757a13d0 JK |
24751 | |
24752 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24753 | GDB is still reading the definitions from command line. First | |
24754 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24755 | to create CURRENT_FILE for the main source holding also the command line | |
24756 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24757 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24758 | ||
24759 | at_commandline = 1; | |
24760 | ||
24761 | do | |
24762 | { | |
24763 | /* Do we at least have room for a macinfo type byte? */ | |
24764 | if (mac_ptr >= mac_end) | |
24765 | { | |
f664829e | 24766 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24767 | break; |
24768 | } | |
24769 | ||
aead7601 | 24770 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24771 | mac_ptr++; |
24772 | ||
cf2c3c16 TT |
24773 | /* Note that we rely on the fact that the corresponding GNU and |
24774 | DWARF constants are the same. */ | |
132448f8 SM |
24775 | DIAGNOSTIC_PUSH |
24776 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24777 | switch (macinfo_type) |
24778 | { | |
24779 | /* A zero macinfo type indicates the end of the macro | |
24780 | information. */ | |
24781 | case 0: | |
24782 | break; | |
2e276125 | 24783 | |
0af92d60 JK |
24784 | case DW_MACRO_define: |
24785 | case DW_MACRO_undef: | |
24786 | case DW_MACRO_define_strp: | |
24787 | case DW_MACRO_undef_strp: | |
24788 | case DW_MACRO_define_sup: | |
24789 | case DW_MACRO_undef_sup: | |
2e276125 | 24790 | { |
891d2f0b | 24791 | unsigned int bytes_read; |
2e276125 | 24792 | int line; |
d521ce57 | 24793 | const char *body; |
cf2c3c16 | 24794 | int is_define; |
2e276125 | 24795 | |
cf2c3c16 TT |
24796 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24797 | mac_ptr += bytes_read; | |
24798 | ||
0af92d60 JK |
24799 | if (macinfo_type == DW_MACRO_define |
24800 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24801 | { |
24802 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24803 | mac_ptr += bytes_read; | |
24804 | } | |
24805 | else | |
24806 | { | |
24807 | LONGEST str_offset; | |
24808 | ||
24809 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24810 | mac_ptr += offset_size; | |
2e276125 | 24811 | |
0af92d60 JK |
24812 | if (macinfo_type == DW_MACRO_define_sup |
24813 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24814 | || section_is_dwz) |
36586728 | 24815 | { |
ed2dc618 SM |
24816 | struct dwz_file *dwz |
24817 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24818 | |
ed2dc618 SM |
24819 | body = read_indirect_string_from_dwz (objfile, |
24820 | dwz, str_offset); | |
36586728 TT |
24821 | } |
24822 | else | |
ed2dc618 SM |
24823 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24824 | abfd, str_offset); | |
cf2c3c16 TT |
24825 | } |
24826 | ||
0af92d60 JK |
24827 | is_define = (macinfo_type == DW_MACRO_define |
24828 | || macinfo_type == DW_MACRO_define_strp | |
24829 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24830 | if (! current_file) |
757a13d0 JK |
24831 | { |
24832 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24833 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24834 | "on line %d: %s"), |
cf2c3c16 TT |
24835 | is_define ? _("definition") : _("undefinition"), |
24836 | line, body); | |
757a13d0 JK |
24837 | break; |
24838 | } | |
3e43a32a MS |
24839 | if ((line == 0 && !at_commandline) |
24840 | || (line != 0 && at_commandline)) | |
b98664d3 | 24841 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24842 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24843 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24844 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24845 | ||
955b06fa | 24846 | if (body == NULL) |
7bede828 | 24847 | { |
955b06fa SDJ |
24848 | /* Fedora's rpm-build's "debugedit" binary |
24849 | corrupted .debug_macro sections. | |
24850 | ||
24851 | For more info, see | |
24852 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24853 | complaint (_("debug info gives %s invalid macro %s " | |
24854 | "without body (corrupted?) at line %d " | |
24855 | "on file %s"), | |
24856 | at_commandline ? _("command-line") : _("in-file"), | |
24857 | is_define ? _("definition") : _("undefinition"), | |
24858 | line, current_file->filename); | |
7bede828 | 24859 | } |
955b06fa SDJ |
24860 | else if (is_define) |
24861 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24862 | else |
24863 | { | |
0af92d60 JK |
24864 | gdb_assert (macinfo_type == DW_MACRO_undef |
24865 | || macinfo_type == DW_MACRO_undef_strp | |
24866 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24867 | macro_undef (current_file, line, body); |
24868 | } | |
2e276125 JB |
24869 | } |
24870 | break; | |
24871 | ||
0af92d60 | 24872 | case DW_MACRO_start_file: |
2e276125 | 24873 | { |
891d2f0b | 24874 | unsigned int bytes_read; |
2e276125 JB |
24875 | int line, file; |
24876 | ||
24877 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24878 | mac_ptr += bytes_read; | |
24879 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24880 | mac_ptr += bytes_read; | |
24881 | ||
3e43a32a MS |
24882 | if ((line == 0 && !at_commandline) |
24883 | || (line != 0 && at_commandline)) | |
b98664d3 | 24884 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24885 | "from %s at %s line %d"), |
24886 | file, at_commandline ? _("command-line") : _("file"), | |
24887 | line == 0 ? _("zero") : _("non-zero"), line); | |
24888 | ||
24889 | if (at_commandline) | |
24890 | { | |
0af92d60 | 24891 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24892 | pass one. */ |
757a13d0 JK |
24893 | at_commandline = 0; |
24894 | } | |
24895 | else | |
804d2729 TT |
24896 | current_file = macro_start_file (cu, file, line, current_file, |
24897 | lh); | |
2e276125 JB |
24898 | } |
24899 | break; | |
24900 | ||
0af92d60 | 24901 | case DW_MACRO_end_file: |
2e276125 | 24902 | if (! current_file) |
b98664d3 | 24903 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24904 | "`close_file' directive")); |
2e276125 JB |
24905 | else |
24906 | { | |
24907 | current_file = current_file->included_by; | |
24908 | if (! current_file) | |
24909 | { | |
cf2c3c16 | 24910 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24911 | |
24912 | /* GCC circa March 2002 doesn't produce the zero | |
24913 | type byte marking the end of the compilation | |
24914 | unit. Complain if it's not there, but exit no | |
24915 | matter what. */ | |
24916 | ||
24917 | /* Do we at least have room for a macinfo type byte? */ | |
24918 | if (mac_ptr >= mac_end) | |
24919 | { | |
f664829e | 24920 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24921 | return; |
24922 | } | |
24923 | ||
24924 | /* We don't increment mac_ptr here, so this is just | |
24925 | a look-ahead. */ | |
aead7601 SM |
24926 | next_type |
24927 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24928 | mac_ptr); | |
2e276125 | 24929 | if (next_type != 0) |
b98664d3 | 24930 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24931 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24932 | |
24933 | return; | |
24934 | } | |
24935 | } | |
24936 | break; | |
24937 | ||
0af92d60 JK |
24938 | case DW_MACRO_import: |
24939 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24940 | { |
24941 | LONGEST offset; | |
8fc3fc34 | 24942 | void **slot; |
a036ba48 TT |
24943 | bfd *include_bfd = abfd; |
24944 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24945 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24946 | int is_dwz = section_is_dwz; |
d521ce57 | 24947 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24948 | |
24949 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24950 | mac_ptr += offset_size; | |
24951 | ||
0af92d60 | 24952 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24953 | { |
ed2dc618 | 24954 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24955 | |
4d663531 | 24956 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24957 | |
a036ba48 | 24958 | include_section = &dwz->macro; |
a32a8923 | 24959 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24960 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24961 | is_dwz = 1; | |
24962 | } | |
24963 | ||
24964 | new_mac_ptr = include_section->buffer + offset; | |
24965 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24966 | ||
8fc3fc34 TT |
24967 | if (*slot != NULL) |
24968 | { | |
24969 | /* This has actually happened; see | |
24970 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24971 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24972 | ".debug_macro section")); |
24973 | } | |
24974 | else | |
24975 | { | |
d521ce57 | 24976 | *slot = (void *) new_mac_ptr; |
36586728 | 24977 | |
804d2729 | 24978 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24979 | include_mac_end, current_file, lh, |
36586728 | 24980 | section, section_is_gnu, is_dwz, |
4d663531 | 24981 | offset_size, include_hash); |
8fc3fc34 | 24982 | |
d521ce57 | 24983 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24984 | } |
cf2c3c16 TT |
24985 | } |
24986 | break; | |
24987 | ||
2e276125 | 24988 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24989 | if (!section_is_gnu) |
24990 | { | |
24991 | unsigned int bytes_read; | |
2e276125 | 24992 | |
ac298888 TT |
24993 | /* This reads the constant, but since we don't recognize |
24994 | any vendor extensions, we ignore it. */ | |
24995 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24996 | mac_ptr += bytes_read; |
24997 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24998 | mac_ptr += bytes_read; | |
2e276125 | 24999 | |
cf2c3c16 TT |
25000 | /* We don't recognize any vendor extensions. */ |
25001 | break; | |
25002 | } | |
25003 | /* FALLTHROUGH */ | |
25004 | ||
25005 | default: | |
25006 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25007 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25008 | section); |
25009 | if (mac_ptr == NULL) | |
25010 | return; | |
25011 | break; | |
2e276125 | 25012 | } |
132448f8 | 25013 | DIAGNOSTIC_POP |
757a13d0 | 25014 | } while (macinfo_type != 0); |
2e276125 | 25015 | } |
8e19ed76 | 25016 | |
cf2c3c16 | 25017 | static void |
09262596 | 25018 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 25019 | int section_is_gnu) |
cf2c3c16 | 25020 | { |
518817b3 SM |
25021 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25022 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25023 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
25024 | struct line_header *lh = cu->line_header; |
25025 | bfd *abfd; | |
d521ce57 | 25026 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
25027 | struct macro_source_file *current_file = 0; |
25028 | enum dwarf_macro_record_type macinfo_type; | |
25029 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 25030 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 25031 | void **slot; |
09262596 DE |
25032 | struct dwarf2_section_info *section; |
25033 | const char *section_name; | |
25034 | ||
25035 | if (cu->dwo_unit != NULL) | |
25036 | { | |
25037 | if (section_is_gnu) | |
25038 | { | |
25039 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
25040 | section_name = ".debug_macro.dwo"; | |
25041 | } | |
25042 | else | |
25043 | { | |
25044 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
25045 | section_name = ".debug_macinfo.dwo"; | |
25046 | } | |
25047 | } | |
25048 | else | |
25049 | { | |
25050 | if (section_is_gnu) | |
25051 | { | |
25052 | section = &dwarf2_per_objfile->macro; | |
25053 | section_name = ".debug_macro"; | |
25054 | } | |
25055 | else | |
25056 | { | |
25057 | section = &dwarf2_per_objfile->macinfo; | |
25058 | section_name = ".debug_macinfo"; | |
25059 | } | |
25060 | } | |
cf2c3c16 | 25061 | |
bb5ed363 | 25062 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
25063 | if (section->buffer == NULL) |
25064 | { | |
b98664d3 | 25065 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
25066 | return; |
25067 | } | |
a32a8923 | 25068 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
25069 | |
25070 | /* First pass: Find the name of the base filename. | |
25071 | This filename is needed in order to process all macros whose definition | |
25072 | (or undefinition) comes from the command line. These macros are defined | |
25073 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
25074 | associated to the base file. | |
25075 | ||
25076 | To determine the base file name, we scan the macro definitions until we | |
25077 | reach the first DW_MACINFO_start_file entry. We then initialize | |
25078 | CURRENT_FILE accordingly so that any macro definition found before the | |
25079 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
25080 | ||
25081 | mac_ptr = section->buffer + offset; | |
25082 | mac_end = section->buffer + section->size; | |
25083 | ||
25084 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
25085 | &offset_size, section_is_gnu); | |
25086 | if (mac_ptr == NULL) | |
25087 | { | |
25088 | /* We already issued a complaint. */ | |
25089 | return; | |
25090 | } | |
25091 | ||
25092 | do | |
25093 | { | |
25094 | /* Do we at least have room for a macinfo type byte? */ | |
25095 | if (mac_ptr >= mac_end) | |
25096 | { | |
25097 | /* Complaint is printed during the second pass as GDB will probably | |
25098 | stop the first pass earlier upon finding | |
25099 | DW_MACINFO_start_file. */ | |
25100 | break; | |
25101 | } | |
25102 | ||
aead7601 | 25103 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
25104 | mac_ptr++; |
25105 | ||
25106 | /* Note that we rely on the fact that the corresponding GNU and | |
25107 | DWARF constants are the same. */ | |
132448f8 SM |
25108 | DIAGNOSTIC_PUSH |
25109 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
25110 | switch (macinfo_type) |
25111 | { | |
25112 | /* A zero macinfo type indicates the end of the macro | |
25113 | information. */ | |
25114 | case 0: | |
25115 | break; | |
25116 | ||
0af92d60 JK |
25117 | case DW_MACRO_define: |
25118 | case DW_MACRO_undef: | |
cf2c3c16 TT |
25119 | /* Only skip the data by MAC_PTR. */ |
25120 | { | |
25121 | unsigned int bytes_read; | |
25122 | ||
25123 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25124 | mac_ptr += bytes_read; | |
25125 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25126 | mac_ptr += bytes_read; | |
25127 | } | |
25128 | break; | |
25129 | ||
0af92d60 | 25130 | case DW_MACRO_start_file: |
cf2c3c16 TT |
25131 | { |
25132 | unsigned int bytes_read; | |
25133 | int line, file; | |
25134 | ||
25135 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25136 | mac_ptr += bytes_read; | |
25137 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25138 | mac_ptr += bytes_read; | |
25139 | ||
804d2729 | 25140 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
25141 | } |
25142 | break; | |
25143 | ||
0af92d60 | 25144 | case DW_MACRO_end_file: |
cf2c3c16 TT |
25145 | /* No data to skip by MAC_PTR. */ |
25146 | break; | |
25147 | ||
0af92d60 JK |
25148 | case DW_MACRO_define_strp: |
25149 | case DW_MACRO_undef_strp: | |
25150 | case DW_MACRO_define_sup: | |
25151 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
25152 | { |
25153 | unsigned int bytes_read; | |
25154 | ||
25155 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25156 | mac_ptr += bytes_read; | |
25157 | mac_ptr += offset_size; | |
25158 | } | |
25159 | break; | |
25160 | ||
0af92d60 JK |
25161 | case DW_MACRO_import: |
25162 | case DW_MACRO_import_sup: | |
cf2c3c16 | 25163 | /* Note that, according to the spec, a transparent include |
0af92d60 | 25164 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
25165 | skip this opcode. */ |
25166 | mac_ptr += offset_size; | |
25167 | break; | |
25168 | ||
25169 | case DW_MACINFO_vendor_ext: | |
25170 | /* Only skip the data by MAC_PTR. */ | |
25171 | if (!section_is_gnu) | |
25172 | { | |
25173 | unsigned int bytes_read; | |
25174 | ||
25175 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25176 | mac_ptr += bytes_read; | |
25177 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25178 | mac_ptr += bytes_read; | |
25179 | } | |
25180 | /* FALLTHROUGH */ | |
25181 | ||
25182 | default: | |
25183 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25184 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25185 | section); |
25186 | if (mac_ptr == NULL) | |
25187 | return; | |
25188 | break; | |
25189 | } | |
132448f8 | 25190 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25191 | } while (macinfo_type != 0 && current_file == NULL); |
25192 | ||
25193 | /* Second pass: Process all entries. | |
25194 | ||
25195 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25196 | command-line macro definitions/undefinitions. This flag is unset when we | |
25197 | reach the first DW_MACINFO_start_file entry. */ | |
25198 | ||
fc4007c9 TT |
25199 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25200 | htab_eq_pointer, | |
25201 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25202 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25203 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25204 | *slot = (void *) mac_ptr; |
804d2729 | 25205 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 25206 | current_file, lh, section, |
fc4007c9 TT |
25207 | section_is_gnu, 0, offset_size, |
25208 | include_hash.get ()); | |
cf2c3c16 TT |
25209 | } |
25210 | ||
8e19ed76 | 25211 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25212 | if so return true else false. */ |
380bca97 | 25213 | |
8e19ed76 | 25214 | static int |
6e5a29e1 | 25215 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25216 | { |
25217 | return (attr == NULL ? 0 : | |
25218 | attr->form == DW_FORM_block1 | |
25219 | || attr->form == DW_FORM_block2 | |
25220 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25221 | || attr->form == DW_FORM_block |
25222 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25223 | } |
4c2df51b | 25224 | |
c6a0999f JB |
25225 | /* Return non-zero if ATTR's value is a section offset --- classes |
25226 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25227 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25228 | ||
25229 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25230 | may have a value that belongs to more than one of these classes; it | |
25231 | would be ambiguous if we did, because we use the same forms for all | |
25232 | of them. */ | |
380bca97 | 25233 | |
3690dd37 | 25234 | static int |
6e5a29e1 | 25235 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25236 | { |
25237 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25238 | || attr->form == DW_FORM_data8 |
25239 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25240 | } |
25241 | ||
3690dd37 JB |
25242 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25243 | zero otherwise. When this function returns true, you can apply | |
25244 | dwarf2_get_attr_constant_value to it. | |
25245 | ||
25246 | However, note that for some attributes you must check | |
25247 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25248 | and DW_FORM_data8 are members of both the constant class, and of | |
25249 | the classes that contain offsets into other debug sections | |
25250 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25251 | that, if an attribute's can be either a constant or one of the | |
25252 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25253 | taken as section offsets, not constants. |
25254 | ||
25255 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25256 | cannot handle that. */ | |
380bca97 | 25257 | |
3690dd37 | 25258 | static int |
6e5a29e1 | 25259 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25260 | { |
25261 | switch (attr->form) | |
25262 | { | |
25263 | case DW_FORM_sdata: | |
25264 | case DW_FORM_udata: | |
25265 | case DW_FORM_data1: | |
25266 | case DW_FORM_data2: | |
25267 | case DW_FORM_data4: | |
25268 | case DW_FORM_data8: | |
663c44ac | 25269 | case DW_FORM_implicit_const: |
3690dd37 JB |
25270 | return 1; |
25271 | default: | |
25272 | return 0; | |
25273 | } | |
25274 | } | |
25275 | ||
7771576e SA |
25276 | |
25277 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25278 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25279 | ||
25280 | static int | |
6e5a29e1 | 25281 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25282 | { |
25283 | switch (attr->form) | |
25284 | { | |
25285 | case DW_FORM_ref_addr: | |
25286 | case DW_FORM_ref1: | |
25287 | case DW_FORM_ref2: | |
25288 | case DW_FORM_ref4: | |
25289 | case DW_FORM_ref8: | |
25290 | case DW_FORM_ref_udata: | |
25291 | case DW_FORM_GNU_ref_alt: | |
25292 | return 1; | |
25293 | default: | |
25294 | return 0; | |
25295 | } | |
25296 | } | |
25297 | ||
3019eac3 DE |
25298 | /* Return the .debug_loc section to use for CU. |
25299 | For DWO files use .debug_loc.dwo. */ | |
25300 | ||
25301 | static struct dwarf2_section_info * | |
25302 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25303 | { | |
518817b3 SM |
25304 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25305 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25306 | |
3019eac3 | 25307 | if (cu->dwo_unit) |
43988095 JK |
25308 | { |
25309 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 25310 | |
43988095 JK |
25311 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
25312 | } | |
25313 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25314 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25315 | } |
25316 | ||
8cf6f0b1 TT |
25317 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25318 | ||
25319 | static void | |
25320 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25321 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25322 | const struct attribute *attr) |
8cf6f0b1 | 25323 | { |
518817b3 SM |
25324 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25325 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25326 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25327 | ||
25328 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25329 | |
25330 | baton->per_cu = cu->per_cu; | |
25331 | gdb_assert (baton->per_cu); | |
25332 | /* We don't know how long the location list is, but make sure we | |
25333 | don't run off the edge of the section. */ | |
3019eac3 DE |
25334 | baton->size = section->size - DW_UNSND (attr); |
25335 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25336 | baton->base_address = cu->base_address; |
f664829e | 25337 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25338 | } |
25339 | ||
4c2df51b | 25340 | static void |
ff39bb5e | 25341 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25342 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25343 | { |
518817b3 SM |
25344 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25345 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25346 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25347 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25348 | |
3690dd37 | 25349 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25350 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25351 | the section. If so, fall through to the complaint in the |
25352 | other branch. */ | |
3019eac3 | 25353 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25354 | { |
0d53c4c4 | 25355 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25356 | |
8d749320 | 25357 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25358 | |
8cf6f0b1 | 25359 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25360 | |
d00adf39 | 25361 | if (cu->base_known == 0) |
b98664d3 | 25362 | complaint (_("Location list used without " |
3e43a32a | 25363 | "specifying the CU base address.")); |
4c2df51b | 25364 | |
f1e6e072 TT |
25365 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25366 | ? dwarf2_loclist_block_index | |
25367 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25368 | SYMBOL_LOCATION_BATON (sym) = baton; |
25369 | } | |
25370 | else | |
25371 | { | |
25372 | struct dwarf2_locexpr_baton *baton; | |
25373 | ||
8d749320 | 25374 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25375 | baton->per_cu = cu->per_cu; |
25376 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25377 | |
25378 | if (attr_form_is_block (attr)) | |
25379 | { | |
25380 | /* Note that we're just copying the block's data pointer | |
25381 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25382 | info_buffer for SYM's objfile; right now we never release |
25383 | that buffer, but when we do clean up properly this may | |
25384 | need to change. */ | |
0d53c4c4 DJ |
25385 | baton->size = DW_BLOCK (attr)->size; |
25386 | baton->data = DW_BLOCK (attr)->data; | |
25387 | } | |
25388 | else | |
25389 | { | |
25390 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 25391 | sym->natural_name ()); |
0d53c4c4 | 25392 | baton->size = 0; |
0d53c4c4 | 25393 | } |
6e70227d | 25394 | |
f1e6e072 TT |
25395 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25396 | ? dwarf2_locexpr_block_index | |
25397 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25398 | SYMBOL_LOCATION_BATON (sym) = baton; |
25399 | } | |
4c2df51b | 25400 | } |
6502dd73 | 25401 | |
9aa1f1e3 TT |
25402 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25403 | came from a separate debuginfo file, then the master objfile is | |
25404 | returned. */ | |
ae0d2f24 UW |
25405 | |
25406 | struct objfile * | |
25407 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25408 | { | |
e3b94546 | 25409 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25410 | |
25411 | /* Return the master objfile, so that we can report and look up the | |
25412 | correct file containing this variable. */ | |
25413 | if (objfile->separate_debug_objfile_backlink) | |
25414 | objfile = objfile->separate_debug_objfile_backlink; | |
25415 | ||
25416 | return objfile; | |
25417 | } | |
25418 | ||
96408a79 SA |
25419 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25420 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25421 | CU_HEADERP first. */ | |
25422 | ||
25423 | static const struct comp_unit_head * | |
25424 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25425 | struct dwarf2_per_cu_data *per_cu) | |
25426 | { | |
d521ce57 | 25427 | const gdb_byte *info_ptr; |
96408a79 SA |
25428 | |
25429 | if (per_cu->cu) | |
25430 | return &per_cu->cu->header; | |
25431 | ||
9c541725 | 25432 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25433 | |
25434 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25435 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25436 | rcuh_kind::COMPILE); | |
96408a79 SA |
25437 | |
25438 | return cu_headerp; | |
25439 | } | |
25440 | ||
ae0d2f24 UW |
25441 | /* Return the address size given in the compilation unit header for CU. */ |
25442 | ||
98714339 | 25443 | int |
ae0d2f24 UW |
25444 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25445 | { | |
96408a79 SA |
25446 | struct comp_unit_head cu_header_local; |
25447 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25448 | |
96408a79 SA |
25449 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25450 | ||
25451 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25452 | } |
25453 | ||
9eae7c52 TT |
25454 | /* Return the offset size given in the compilation unit header for CU. */ |
25455 | ||
25456 | int | |
25457 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25458 | { | |
96408a79 SA |
25459 | struct comp_unit_head cu_header_local; |
25460 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25461 | |
96408a79 SA |
25462 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25463 | ||
25464 | return cu_headerp->offset_size; | |
25465 | } | |
25466 | ||
25467 | /* See its dwarf2loc.h declaration. */ | |
25468 | ||
25469 | int | |
25470 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25471 | { | |
25472 | struct comp_unit_head cu_header_local; | |
25473 | const struct comp_unit_head *cu_headerp; | |
25474 | ||
25475 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25476 | ||
25477 | if (cu_headerp->version == 2) | |
25478 | return cu_headerp->addr_size; | |
25479 | else | |
25480 | return cu_headerp->offset_size; | |
181cebd4 JK |
25481 | } |
25482 | ||
9aa1f1e3 TT |
25483 | /* Return the text offset of the CU. The returned offset comes from |
25484 | this CU's objfile. If this objfile came from a separate debuginfo | |
25485 | file, then the offset may be different from the corresponding | |
25486 | offset in the parent objfile. */ | |
25487 | ||
25488 | CORE_ADDR | |
25489 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25490 | { | |
b3b3bada | 25491 | return per_cu->dwarf2_per_objfile->objfile->text_section_offset (); |
9aa1f1e3 TT |
25492 | } |
25493 | ||
9a49df9d AB |
25494 | /* Return a type that is a generic pointer type, the size of which matches |
25495 | the address size given in the compilation unit header for PER_CU. */ | |
25496 | static struct type * | |
25497 | dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu) | |
25498 | { | |
25499 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
25500 | struct type *void_type = objfile_type (objfile)->builtin_void; | |
25501 | struct type *addr_type = lookup_pointer_type (void_type); | |
25502 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
25503 | ||
25504 | if (TYPE_LENGTH (addr_type) == addr_size) | |
25505 | return addr_type; | |
25506 | ||
25507 | addr_type | |
25508 | = dwarf2_per_cu_addr_sized_int_type (per_cu, TYPE_UNSIGNED (addr_type)); | |
25509 | return addr_type; | |
25510 | } | |
25511 | ||
43988095 JK |
25512 | /* Return DWARF version number of PER_CU. */ |
25513 | ||
25514 | short | |
25515 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25516 | { | |
25517 | return per_cu->dwarf_version; | |
25518 | } | |
25519 | ||
348e048f DE |
25520 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25521 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25522 | |
25523 | static struct dwarf2_per_cu_data * | |
9c541725 | 25524 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25525 | unsigned int offset_in_dwz, |
ed2dc618 | 25526 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25527 | { |
25528 | struct dwarf2_per_cu_data *this_cu; | |
25529 | int low, high; | |
25530 | ||
ae038cb0 | 25531 | low = 0; |
b76e467d | 25532 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25533 | while (high > low) |
25534 | { | |
36586728 | 25535 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25536 | int mid = low + (high - low) / 2; |
9a619af0 | 25537 | |
36586728 | 25538 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25539 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25540 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25541 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25542 | high = mid; |
25543 | else | |
25544 | low = mid + 1; | |
25545 | } | |
25546 | gdb_assert (low == high); | |
36586728 | 25547 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25548 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25549 | { |
36586728 | 25550 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25551 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25552 | "offset %s [in module %s]"), |
25553 | sect_offset_str (sect_off), | |
ed2dc618 | 25554 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25555 | |
9c541725 PA |
25556 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25557 | <= sect_off); | |
ae038cb0 DJ |
25558 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25559 | } | |
25560 | else | |
25561 | { | |
b76e467d | 25562 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25563 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25564 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25565 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25566 | return this_cu; |
25567 | } | |
25568 | } | |
25569 | ||
23745b47 | 25570 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25571 | |
fcd3b13d SM |
25572 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25573 | : per_cu (per_cu_), | |
9068261f AB |
25574 | mark (false), |
25575 | has_loclist (false), | |
25576 | checked_producer (false), | |
25577 | producer_is_gxx_lt_4_6 (false), | |
25578 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25579 | producer_is_icc (false), |
9068261f | 25580 | producer_is_icc_lt_14 (false), |
c258c396 | 25581 | producer_is_codewarrior (false), |
9068261f | 25582 | processing_has_namespace_info (false) |
93311388 | 25583 | { |
fcd3b13d SM |
25584 | per_cu->cu = this; |
25585 | } | |
25586 | ||
25587 | /* Destroy a dwarf2_cu. */ | |
25588 | ||
25589 | dwarf2_cu::~dwarf2_cu () | |
25590 | { | |
25591 | per_cu->cu = NULL; | |
9816fde3 JK |
25592 | } |
25593 | ||
25594 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25595 | ||
25596 | static void | |
95554aad TT |
25597 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25598 | enum language pretend_language) | |
9816fde3 JK |
25599 | { |
25600 | struct attribute *attr; | |
25601 | ||
25602 | /* Set the language we're debugging. */ | |
25603 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25604 | if (attr != nullptr) |
9816fde3 JK |
25605 | set_cu_language (DW_UNSND (attr), cu); |
25606 | else | |
9cded63f | 25607 | { |
95554aad | 25608 | cu->language = pretend_language; |
9cded63f TT |
25609 | cu->language_defn = language_def (cu->language); |
25610 | } | |
dee91e82 | 25611 | |
7d45c7c3 | 25612 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25613 | } |
25614 | ||
ae038cb0 DJ |
25615 | /* Increase the age counter on each cached compilation unit, and free |
25616 | any that are too old. */ | |
25617 | ||
25618 | static void | |
ed2dc618 | 25619 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25620 | { |
25621 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25622 | ||
25623 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25624 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25625 | while (per_cu != NULL) | |
25626 | { | |
25627 | per_cu->cu->last_used ++; | |
b4f54984 | 25628 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25629 | dwarf2_mark (per_cu->cu); |
25630 | per_cu = per_cu->cu->read_in_chain; | |
25631 | } | |
25632 | ||
25633 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25634 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25635 | while (per_cu != NULL) | |
25636 | { | |
25637 | struct dwarf2_per_cu_data *next_cu; | |
25638 | ||
25639 | next_cu = per_cu->cu->read_in_chain; | |
25640 | ||
25641 | if (!per_cu->cu->mark) | |
25642 | { | |
fcd3b13d | 25643 | delete per_cu->cu; |
ae038cb0 DJ |
25644 | *last_chain = next_cu; |
25645 | } | |
25646 | else | |
25647 | last_chain = &per_cu->cu->read_in_chain; | |
25648 | ||
25649 | per_cu = next_cu; | |
25650 | } | |
25651 | } | |
25652 | ||
25653 | /* Remove a single compilation unit from the cache. */ | |
25654 | ||
25655 | static void | |
dee91e82 | 25656 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25657 | { |
25658 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25659 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25660 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25661 | |
25662 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25663 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25664 | while (per_cu != NULL) | |
25665 | { | |
25666 | struct dwarf2_per_cu_data *next_cu; | |
25667 | ||
25668 | next_cu = per_cu->cu->read_in_chain; | |
25669 | ||
dee91e82 | 25670 | if (per_cu == target_per_cu) |
ae038cb0 | 25671 | { |
fcd3b13d | 25672 | delete per_cu->cu; |
dee91e82 | 25673 | per_cu->cu = NULL; |
ae038cb0 DJ |
25674 | *last_chain = next_cu; |
25675 | break; | |
25676 | } | |
25677 | else | |
25678 | last_chain = &per_cu->cu->read_in_chain; | |
25679 | ||
25680 | per_cu = next_cu; | |
25681 | } | |
25682 | } | |
25683 | ||
dee91e82 DE |
25684 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25685 | We store these in a hash table separate from the DIEs, and preserve them | |
25686 | when the DIEs are flushed out of cache. | |
25687 | ||
25688 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25689 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25690 | or the type may come from a DWO file. Furthermore, while it's more logical |
25691 | to use per_cu->section+offset, with Fission the section with the data is in | |
25692 | the DWO file but we don't know that section at the point we need it. | |
25693 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25694 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25695 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25696 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25697 | |
dee91e82 | 25698 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25699 | { |
dee91e82 | 25700 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25701 | sect_offset sect_off; |
1c379e20 DJ |
25702 | struct type *type; |
25703 | }; | |
25704 | ||
dee91e82 | 25705 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25706 | |
25707 | static hashval_t | |
dee91e82 | 25708 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25709 | { |
9a3c8263 SM |
25710 | const struct dwarf2_per_cu_offset_and_type *ofs |
25711 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25712 | |
9c541725 | 25713 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25714 | } |
25715 | ||
dee91e82 | 25716 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25717 | |
25718 | static int | |
dee91e82 | 25719 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25720 | { |
9a3c8263 SM |
25721 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25722 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25723 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25724 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25725 | |
dee91e82 | 25726 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25727 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25728 | } |
25729 | ||
25730 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25731 | table if necessary. For convenience, return TYPE. |
25732 | ||
25733 | The DIEs reading must have careful ordering to: | |
85102364 | 25734 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25735 | reading current DIE. |
25736 | * Not trying to dereference contents of still incompletely read in types | |
25737 | while reading in other DIEs. | |
25738 | * Enable referencing still incompletely read in types just by a pointer to | |
25739 | the type without accessing its fields. | |
25740 | ||
25741 | Therefore caller should follow these rules: | |
25742 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25743 | before building the type and calling set_die_type. | |
e71ec853 | 25744 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25745 | possible before fetching more types to complete the current type. |
25746 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25747 | |
f792889a | 25748 | static struct type * |
1c379e20 DJ |
25749 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25750 | { | |
518817b3 SM |
25751 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25752 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25753 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25754 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25755 | struct attribute *attr; |
25756 | struct dynamic_prop prop; | |
1c379e20 | 25757 | |
b4ba55a1 JB |
25758 | /* For Ada types, make sure that the gnat-specific data is always |
25759 | initialized (if not already set). There are a few types where | |
25760 | we should not be doing so, because the type-specific area is | |
25761 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25762 | where the type-specific area is used to store the floatformat). | |
25763 | But this is not a problem, because the gnat-specific information | |
25764 | is actually not needed for these types. */ | |
25765 | if (need_gnat_info (cu) | |
25766 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25767 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25768 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25769 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25770 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25771 | && !HAVE_GNAT_AUX_INFO (type)) |
25772 | INIT_GNAT_SPECIFIC (type); | |
25773 | ||
3f2f83dd KB |
25774 | /* Read DW_AT_allocated and set in type. */ |
25775 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25776 | if (attr_form_is_block (attr)) | |
25777 | { | |
9a49df9d AB |
25778 | struct type *prop_type |
25779 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25780 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25781 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25782 | } |
25783 | else if (attr != NULL) | |
25784 | { | |
b98664d3 | 25785 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25786 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25787 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25788 | } |
25789 | ||
25790 | /* Read DW_AT_associated and set in type. */ | |
25791 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25792 | if (attr_form_is_block (attr)) | |
25793 | { | |
9a49df9d AB |
25794 | struct type *prop_type |
25795 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25796 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25797 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25798 | } |
25799 | else if (attr != NULL) | |
25800 | { | |
b98664d3 | 25801 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25802 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25803 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25804 | } |
25805 | ||
3cdcd0ce JB |
25806 | /* Read DW_AT_data_location and set in type. */ |
25807 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d AB |
25808 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
25809 | dwarf2_per_cu_addr_type (cu->per_cu))) | |
50a82047 | 25810 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25811 | |
dee91e82 | 25812 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25813 | { |
dee91e82 DE |
25814 | dwarf2_per_objfile->die_type_hash = |
25815 | htab_create_alloc_ex (127, | |
25816 | per_cu_offset_and_type_hash, | |
25817 | per_cu_offset_and_type_eq, | |
25818 | NULL, | |
25819 | &objfile->objfile_obstack, | |
25820 | hashtab_obstack_allocate, | |
25821 | dummy_obstack_deallocate); | |
f792889a | 25822 | } |
1c379e20 | 25823 | |
dee91e82 | 25824 | ofs.per_cu = cu->per_cu; |
9c541725 | 25825 | ofs.sect_off = die->sect_off; |
1c379e20 | 25826 | ofs.type = type; |
dee91e82 DE |
25827 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25828 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25829 | if (*slot) |
b98664d3 | 25830 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25831 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25832 | *slot = XOBNEW (&objfile->objfile_obstack, |
25833 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25834 | **slot = ofs; |
f792889a | 25835 | return type; |
1c379e20 DJ |
25836 | } |
25837 | ||
9c541725 | 25838 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25839 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25840 | |
25841 | static struct type * | |
9c541725 | 25842 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25843 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25844 | { |
dee91e82 | 25845 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25846 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25847 | |
dee91e82 | 25848 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25849 | return NULL; |
1c379e20 | 25850 | |
dee91e82 | 25851 | ofs.per_cu = per_cu; |
9c541725 | 25852 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25853 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25854 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25855 | if (slot) |
25856 | return slot->type; | |
25857 | else | |
25858 | return NULL; | |
25859 | } | |
25860 | ||
02142a6c | 25861 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25862 | or return NULL if DIE does not have a saved type. */ |
25863 | ||
25864 | static struct type * | |
25865 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25866 | { | |
9c541725 | 25867 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25868 | } |
25869 | ||
10b3939b DJ |
25870 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25871 | ||
25872 | static void | |
25873 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25874 | struct dwarf2_per_cu_data *ref_per_cu) | |
25875 | { | |
25876 | void **slot; | |
25877 | ||
25878 | if (cu->dependencies == NULL) | |
25879 | cu->dependencies | |
25880 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25881 | NULL, &cu->comp_unit_obstack, | |
25882 | hashtab_obstack_allocate, | |
25883 | dummy_obstack_deallocate); | |
25884 | ||
25885 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25886 | if (*slot == NULL) | |
25887 | *slot = ref_per_cu; | |
25888 | } | |
1c379e20 | 25889 | |
f504f079 DE |
25890 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25891 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25892 | cache that we must keep because we are keeping CU. */ |
25893 | ||
10b3939b DJ |
25894 | static int |
25895 | dwarf2_mark_helper (void **slot, void *data) | |
25896 | { | |
25897 | struct dwarf2_per_cu_data *per_cu; | |
25898 | ||
25899 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25900 | |
25901 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25902 | reading of the chain. As such dependencies remain valid it is not much | |
25903 | useful to track and undo them during QUIT cleanups. */ | |
25904 | if (per_cu->cu == NULL) | |
25905 | return 1; | |
25906 | ||
10b3939b DJ |
25907 | if (per_cu->cu->mark) |
25908 | return 1; | |
9068261f | 25909 | per_cu->cu->mark = true; |
10b3939b DJ |
25910 | |
25911 | if (per_cu->cu->dependencies != NULL) | |
25912 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25913 | ||
25914 | return 1; | |
25915 | } | |
25916 | ||
f504f079 DE |
25917 | /* Set the mark field in CU and in every other compilation unit in the |
25918 | cache that we must keep because we are keeping CU. */ | |
25919 | ||
ae038cb0 DJ |
25920 | static void |
25921 | dwarf2_mark (struct dwarf2_cu *cu) | |
25922 | { | |
25923 | if (cu->mark) | |
25924 | return; | |
9068261f | 25925 | cu->mark = true; |
10b3939b DJ |
25926 | if (cu->dependencies != NULL) |
25927 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25928 | } |
25929 | ||
25930 | static void | |
25931 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25932 | { | |
25933 | while (per_cu) | |
25934 | { | |
9068261f | 25935 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25936 | per_cu = per_cu->cu->read_in_chain; |
25937 | } | |
72bf9492 DJ |
25938 | } |
25939 | ||
72bf9492 DJ |
25940 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25941 | is its offset in .debug_info for this objfile. */ | |
25942 | ||
25943 | static hashval_t | |
25944 | partial_die_hash (const void *item) | |
25945 | { | |
9a3c8263 SM |
25946 | const struct partial_die_info *part_die |
25947 | = (const struct partial_die_info *) item; | |
9a619af0 | 25948 | |
9c541725 | 25949 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25950 | } |
25951 | ||
25952 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25953 | are equal if they have the same offset. */ | |
25954 | ||
25955 | static int | |
25956 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25957 | { | |
9a3c8263 SM |
25958 | const struct partial_die_info *part_die_lhs |
25959 | = (const struct partial_die_info *) item_lhs; | |
25960 | const struct partial_die_info *part_die_rhs | |
25961 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25962 | |
9c541725 | 25963 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25964 | } |
25965 | ||
3c3bb058 AB |
25966 | struct cmd_list_element *set_dwarf_cmdlist; |
25967 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25968 | |
25969 | static void | |
981a3fb3 | 25970 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25971 | { |
b4f54984 | 25972 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25973 | gdb_stdout); |
ae038cb0 DJ |
25974 | } |
25975 | ||
25976 | static void | |
981a3fb3 | 25977 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25978 | { |
b4f54984 | 25979 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25980 | } |
25981 | ||
491144b5 | 25982 | bool dwarf_always_disassemble; |
437afbb8 | 25983 | |
437afbb8 | 25984 | static void |
cd4fb1b2 SM |
25985 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25986 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25987 | { |
cd4fb1b2 SM |
25988 | fprintf_filtered (file, |
25989 | _("Whether to always disassemble " | |
25990 | "DWARF expressions is %s.\n"), | |
25991 | value); | |
9291a0cd TT |
25992 | } |
25993 | ||
9291a0cd | 25994 | static void |
cd4fb1b2 SM |
25995 | show_check_physname (struct ui_file *file, int from_tty, |
25996 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25997 | { |
cd4fb1b2 SM |
25998 | fprintf_filtered (file, |
25999 | _("Whether to check \"physname\" is %s.\n"), | |
26000 | value); | |
9291a0cd TT |
26001 | } |
26002 | ||
6c265988 | 26003 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 26004 | void |
6c265988 | 26005 | _initialize_dwarf2_read () |
9291a0cd | 26006 | { |
cd4fb1b2 SM |
26007 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
26008 | Set DWARF specific variables.\n\ | |
590042fc | 26009 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
26010 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
26011 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 26012 | |
cd4fb1b2 | 26013 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
26014 | Show DWARF specific variables.\n\ |
26015 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
26016 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
26017 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 26018 | |
cd4fb1b2 SM |
26019 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
26020 | &dwarf_max_cache_age, _("\ | |
26021 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
26022 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
26023 | A higher limit means that cached compilation units will be stored\n\ | |
26024 | in memory longer, and more total memory will be used. Zero disables\n\ | |
26025 | caching, which can slow down startup."), | |
26026 | NULL, | |
26027 | show_dwarf_max_cache_age, | |
26028 | &set_dwarf_cmdlist, | |
26029 | &show_dwarf_cmdlist); | |
156942c7 | 26030 | |
cd4fb1b2 SM |
26031 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
26032 | &dwarf_always_disassemble, _("\ | |
26033 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
26034 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
26035 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
26036 | syntax. When disabled, expressions will be printed in a more\n\ | |
26037 | conversational style, when possible."), | |
26038 | NULL, | |
26039 | show_dwarf_always_disassemble, | |
26040 | &set_dwarf_cmdlist, | |
26041 | &show_dwarf_cmdlist); | |
9291a0cd | 26042 | |
cd4fb1b2 SM |
26043 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
26044 | Set debugging of the DWARF reader."), _("\ | |
26045 | Show debugging of the DWARF reader."), _("\ | |
26046 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
26047 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
26048 | information. A value greater than 1 provides more verbose information."), | |
26049 | NULL, | |
26050 | NULL, | |
26051 | &setdebuglist, &showdebuglist); | |
9291a0cd | 26052 | |
cd4fb1b2 SM |
26053 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
26054 | Set debugging of the DWARF DIE reader."), _("\ | |
26055 | Show debugging of the DWARF DIE reader."), _("\ | |
26056 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
26057 | The value is the maximum depth to print."), | |
26058 | NULL, | |
26059 | NULL, | |
26060 | &setdebuglist, &showdebuglist); | |
9291a0cd | 26061 | |
cd4fb1b2 SM |
26062 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
26063 | Set debugging of the dwarf line reader."), _("\ | |
26064 | Show debugging of the dwarf line reader."), _("\ | |
26065 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
26066 | A value of 1 (one) provides basic information.\n\ | |
26067 | A value greater than 1 provides more verbose information."), | |
26068 | NULL, | |
26069 | NULL, | |
26070 | &setdebuglist, &showdebuglist); | |
437afbb8 | 26071 | |
cd4fb1b2 SM |
26072 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
26073 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
26074 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
26075 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
26076 | the demangler."), | |
26077 | NULL, show_check_physname, | |
26078 | &setdebuglist, &showdebuglist); | |
900e11f9 | 26079 | |
e615022a DE |
26080 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
26081 | no_class, &use_deprecated_index_sections, _("\ | |
26082 | Set whether to use deprecated gdb_index sections."), _("\ | |
26083 | Show whether to use deprecated gdb_index sections."), _("\ | |
26084 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
26085 | Normally they are ignored either because of a missing feature or\n\ | |
26086 | performance issue.\n\ | |
26087 | Warning: This option must be enabled before gdb reads the file."), | |
26088 | NULL, | |
26089 | NULL, | |
26090 | &setlist, &showlist); | |
26091 | ||
f1e6e072 TT |
26092 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
26093 | &dwarf2_locexpr_funcs); | |
26094 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
26095 | &dwarf2_loclist_funcs); | |
26096 | ||
26097 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
26098 | &dwarf2_block_frame_base_locexpr_funcs); | |
26099 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
26100 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
26101 | |
26102 | #if GDB_SELF_TEST | |
26103 | selftests::register_test ("dw2_expand_symtabs_matching", | |
26104 | selftests::dw2_expand_symtabs_matching::run_test); | |
26105 | #endif | |
6502dd73 | 26106 | } |