Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
42a4f53d | 3 | Copyright (C) 1994-2019 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" | |
4de283e4 TT |
35 | #include "bfd.h" |
36 | #include "elf-bfd.h" | |
37 | #include "symtab.h" | |
38 | #include "gdbtypes.h" | |
39 | #include "objfiles.h" | |
d55e5aa6 | 40 | #include "dwarf2.h" |
4de283e4 TT |
41 | #include "buildsym.h" |
42 | #include "demangle.h" | |
43 | #include "gdb-demangle.h" | |
44 | #include "expression.h" | |
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" | |
59 | #include <sys/stat.h> | |
60 | #include "completer.h" | |
268a13a5 | 61 | #include "gdbsupport/vec.h" |
4de283e4 | 62 | #include "c-lang.h" |
d55e5aa6 | 63 | #include "go-lang.h" |
4de283e4 TT |
64 | #include "valprint.h" |
65 | #include "gdbcore.h" /* for gnutarget */ | |
66 | #include "gdb/gdb-index.h" | |
67 | #include <ctype.h> | |
68 | #include "gdb_bfd.h" | |
69 | #include "f-lang.h" | |
70 | #include "source.h" | |
268a13a5 | 71 | #include "gdbsupport/filestuff.h" |
4de283e4 | 72 | #include "build-id.h" |
d55e5aa6 | 73 | #include "namespace.h" |
268a13a5 TT |
74 | #include "gdbsupport/gdb_unlinker.h" |
75 | #include "gdbsupport/function-view.h" | |
76 | #include "gdbsupport/gdb_optional.h" | |
77 | #include "gdbsupport/underlying.h" | |
78 | #include "gdbsupport/byte-vector.h" | |
79 | #include "gdbsupport/hash_enum.h" | |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 TT |
82 | #include <fcntl.h> |
83 | #include <sys/types.h> | |
84 | #include <algorithm> | |
85 | #include <unordered_set> | |
86 | #include <unordered_map> | |
268a13a5 | 87 | #include "gdbsupport/selftest.h" |
4de283e4 TT |
88 | #include <cmath> |
89 | #include <set> | |
90 | #include <forward_list> | |
c9317f21 | 91 | #include "rust-lang.h" |
268a13a5 | 92 | #include "gdbsupport/pathstuff.h" |
437afbb8 | 93 | |
73be47f5 DE |
94 | /* When == 1, print basic high level tracing messages. |
95 | When > 1, be more verbose. | |
b4f54984 DE |
96 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
97 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 98 | |
d97bc12b | 99 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 100 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 101 | |
27e0867f DE |
102 | /* When non-zero, dump line number entries as they are read in. */ |
103 | static unsigned int dwarf_line_debug = 0; | |
104 | ||
491144b5 CB |
105 | /* When true, cross-check physname against demangler. */ |
106 | static bool check_physname = false; | |
900e11f9 | 107 | |
491144b5 CB |
108 | /* When true, do not reject deprecated .gdb_index sections. */ |
109 | static bool use_deprecated_index_sections = false; | |
481860b3 | 110 | |
5bfd760d | 111 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 112 | |
f1e6e072 TT |
113 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
114 | ||
115 | static int dwarf2_locexpr_index; | |
116 | static int dwarf2_loclist_index; | |
117 | static int dwarf2_locexpr_block_index; | |
118 | static int dwarf2_loclist_block_index; | |
119 | ||
3f563c84 PA |
120 | /* An index into a (C++) symbol name component in a symbol name as |
121 | recorded in the mapped_index's symbol table. For each C++ symbol | |
122 | in the symbol table, we record one entry for the start of each | |
123 | component in the symbol in a table of name components, and then | |
124 | sort the table, in order to be able to binary search symbol names, | |
125 | ignoring leading namespaces, both completion and regular look up. | |
126 | For example, for symbol "A::B::C", we'll have an entry that points | |
127 | to "A::B::C", another that points to "B::C", and another for "C". | |
128 | Note that function symbols in GDB index have no parameter | |
129 | information, just the function/method names. You can convert a | |
130 | name_component to a "const char *" using the | |
131 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
132 | ||
133 | struct name_component | |
134 | { | |
135 | /* Offset in the symbol name where the component starts. Stored as | |
136 | a (32-bit) offset instead of a pointer to save memory and improve | |
137 | locality on 64-bit architectures. */ | |
138 | offset_type name_offset; | |
139 | ||
140 | /* The symbol's index in the symbol and constant pool tables of a | |
141 | mapped_index. */ | |
142 | offset_type idx; | |
143 | }; | |
144 | ||
44ed8f3e PA |
145 | /* Base class containing bits shared by both .gdb_index and |
146 | .debug_name indexes. */ | |
147 | ||
148 | struct mapped_index_base | |
149 | { | |
22ca247e TT |
150 | mapped_index_base () = default; |
151 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
152 | ||
44ed8f3e PA |
153 | /* The name_component table (a sorted vector). See name_component's |
154 | description above. */ | |
155 | std::vector<name_component> name_components; | |
156 | ||
157 | /* How NAME_COMPONENTS is sorted. */ | |
158 | enum case_sensitivity name_components_casing; | |
159 | ||
160 | /* Return the number of names in the symbol table. */ | |
161 | virtual size_t symbol_name_count () const = 0; | |
162 | ||
163 | /* Get the name of the symbol at IDX in the symbol table. */ | |
164 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
165 | ||
166 | /* Return whether the name at IDX in the symbol table should be | |
167 | ignored. */ | |
168 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
169 | { | |
170 | return false; | |
171 | } | |
172 | ||
173 | /* Build the symbol name component sorted vector, if we haven't | |
174 | yet. */ | |
175 | void build_name_components (); | |
176 | ||
177 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
178 | possible matches for LN_NO_PARAMS in the name component | |
179 | vector. */ | |
180 | std::pair<std::vector<name_component>::const_iterator, | |
181 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
182 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
183 | enum language lang) const; | |
44ed8f3e PA |
184 | |
185 | /* Prevent deleting/destroying via a base class pointer. */ | |
186 | protected: | |
187 | ~mapped_index_base() = default; | |
188 | }; | |
189 | ||
9291a0cd TT |
190 | /* A description of the mapped index. The file format is described in |
191 | a comment by the code that writes the index. */ | |
fc898b42 | 192 | struct mapped_index final : public mapped_index_base |
9291a0cd | 193 | { |
f00a2de2 PA |
194 | /* A slot/bucket in the symbol table hash. */ |
195 | struct symbol_table_slot | |
196 | { | |
197 | const offset_type name; | |
198 | const offset_type vec; | |
199 | }; | |
200 | ||
559a7a62 | 201 | /* Index data format version. */ |
3063847f | 202 | int version = 0; |
559a7a62 | 203 | |
f00a2de2 PA |
204 | /* The address table data. */ |
205 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 206 | |
3876f04e | 207 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 208 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 209 | |
9291a0cd | 210 | /* A pointer to the constant pool. */ |
3063847f | 211 | const char *constant_pool = nullptr; |
3f563c84 | 212 | |
44ed8f3e PA |
213 | bool symbol_name_slot_invalid (offset_type idx) const override |
214 | { | |
215 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 216 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 217 | } |
5c58de74 | 218 | |
3f563c84 PA |
219 | /* Convenience method to get at the name of the symbol at IDX in the |
220 | symbol table. */ | |
44ed8f3e | 221 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 222 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 223 | |
44ed8f3e PA |
224 | size_t symbol_name_count () const override |
225 | { return this->symbol_table.size (); } | |
9291a0cd TT |
226 | }; |
227 | ||
927aa2e7 JK |
228 | /* A description of the mapped .debug_names. |
229 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 230 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 231 | { |
ed2dc618 SM |
232 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
233 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
234 | {} | |
235 | ||
236 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
237 | bfd_endian dwarf5_byte_order; |
238 | bool dwarf5_is_dwarf64; | |
239 | bool augmentation_is_gdb; | |
240 | uint8_t offset_size; | |
241 | uint32_t cu_count = 0; | |
242 | uint32_t tu_count, bucket_count, name_count; | |
243 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
244 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
245 | const gdb_byte *name_table_string_offs_reordered; | |
246 | const gdb_byte *name_table_entry_offs_reordered; | |
247 | const gdb_byte *entry_pool; | |
248 | ||
249 | struct index_val | |
250 | { | |
251 | ULONGEST dwarf_tag; | |
252 | struct attr | |
253 | { | |
254 | /* Attribute name DW_IDX_*. */ | |
255 | ULONGEST dw_idx; | |
256 | ||
257 | /* Attribute form DW_FORM_*. */ | |
258 | ULONGEST form; | |
259 | ||
260 | /* Value if FORM is DW_FORM_implicit_const. */ | |
261 | LONGEST implicit_const; | |
262 | }; | |
263 | std::vector<attr> attr_vec; | |
264 | }; | |
265 | ||
266 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
267 | ||
268 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
269 | |
270 | /* Implementation of the mapped_index_base virtual interface, for | |
271 | the name_components cache. */ | |
272 | ||
273 | const char *symbol_name_at (offset_type idx) const override | |
274 | { return namei_to_name (idx); } | |
275 | ||
276 | size_t symbol_name_count () const override | |
277 | { return this->name_count; } | |
927aa2e7 JK |
278 | }; |
279 | ||
cd4fb1b2 | 280 | /* See dwarf2read.h. */ |
ed2dc618 | 281 | |
cd4fb1b2 | 282 | dwarf2_per_objfile * |
ed2dc618 SM |
283 | get_dwarf2_per_objfile (struct objfile *objfile) |
284 | { | |
5bfd760d | 285 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 286 | } |
c906108c | 287 | |
251d32d9 | 288 | /* Default names of the debugging sections. */ |
c906108c | 289 | |
233a11ab CS |
290 | /* Note that if the debugging section has been compressed, it might |
291 | have a name like .zdebug_info. */ | |
292 | ||
9cdd5dbd DE |
293 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
294 | { | |
251d32d9 TG |
295 | { ".debug_info", ".zdebug_info" }, |
296 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
297 | { ".debug_line", ".zdebug_line" }, | |
298 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 299 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 300 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 301 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 302 | { ".debug_str", ".zdebug_str" }, |
43988095 | 303 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 304 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 305 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 306 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 307 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
308 | { ".debug_frame", ".zdebug_frame" }, |
309 | { ".eh_frame", NULL }, | |
24d3216f | 310 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
311 | { ".debug_names", ".zdebug_names" }, |
312 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 313 | 23 |
251d32d9 | 314 | }; |
c906108c | 315 | |
80626a55 | 316 | /* List of DWO/DWP sections. */ |
3019eac3 | 317 | |
80626a55 | 318 | static const struct dwop_section_names |
3019eac3 DE |
319 | { |
320 | struct dwarf2_section_names abbrev_dwo; | |
321 | struct dwarf2_section_names info_dwo; | |
322 | struct dwarf2_section_names line_dwo; | |
323 | struct dwarf2_section_names loc_dwo; | |
43988095 | 324 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
325 | struct dwarf2_section_names macinfo_dwo; |
326 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
327 | struct dwarf2_section_names str_dwo; |
328 | struct dwarf2_section_names str_offsets_dwo; | |
329 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
330 | struct dwarf2_section_names cu_index; |
331 | struct dwarf2_section_names tu_index; | |
3019eac3 | 332 | } |
80626a55 | 333 | dwop_section_names = |
3019eac3 DE |
334 | { |
335 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
336 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
337 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
338 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 339 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
340 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
341 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
342 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
343 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
344 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
345 | { ".debug_cu_index", ".zdebug_cu_index" }, |
346 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
347 | }; |
348 | ||
c906108c SS |
349 | /* local data types */ |
350 | ||
107d2387 AC |
351 | /* The data in a compilation unit header, after target2host |
352 | translation, looks like this. */ | |
c906108c | 353 | struct comp_unit_head |
a738430d | 354 | { |
c764a876 | 355 | unsigned int length; |
a738430d | 356 | short version; |
a738430d MK |
357 | unsigned char addr_size; |
358 | unsigned char signed_addr_p; | |
9c541725 | 359 | sect_offset abbrev_sect_off; |
57349743 | 360 | |
a738430d MK |
361 | /* Size of file offsets; either 4 or 8. */ |
362 | unsigned int offset_size; | |
57349743 | 363 | |
a738430d MK |
364 | /* Size of the length field; either 4 or 12. */ |
365 | unsigned int initial_length_size; | |
57349743 | 366 | |
43988095 JK |
367 | enum dwarf_unit_type unit_type; |
368 | ||
a738430d MK |
369 | /* Offset to the first byte of this compilation unit header in the |
370 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 371 | sect_offset sect_off; |
57349743 | 372 | |
d00adf39 DE |
373 | /* Offset to first die in this cu from the start of the cu. |
374 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 375 | cu_offset first_die_cu_offset; |
43988095 | 376 | |
a084a2a6 AT |
377 | |
378 | /* 64-bit signature of this unit. For type units, it denotes the signature of | |
379 | the type (DW_UT_type in DWARF 4, additionally DW_UT_split_type in DWARF 5). | |
380 | Also used in DWARF 5, to denote the dwo id when the unit type is | |
381 | DW_UT_skeleton or DW_UT_split_compile. */ | |
43988095 JK |
382 | ULONGEST signature; |
383 | ||
384 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 385 | cu_offset type_cu_offset_in_tu; |
a738430d | 386 | }; |
c906108c | 387 | |
3da10d80 KS |
388 | /* Type used for delaying computation of method physnames. |
389 | See comments for compute_delayed_physnames. */ | |
390 | struct delayed_method_info | |
391 | { | |
392 | /* The type to which the method is attached, i.e., its parent class. */ | |
393 | struct type *type; | |
394 | ||
395 | /* The index of the method in the type's function fieldlists. */ | |
396 | int fnfield_index; | |
397 | ||
398 | /* The index of the method in the fieldlist. */ | |
399 | int index; | |
400 | ||
401 | /* The name of the DIE. */ | |
402 | const char *name; | |
403 | ||
404 | /* The DIE associated with this method. */ | |
405 | struct die_info *die; | |
406 | }; | |
407 | ||
e7c27a73 DJ |
408 | /* Internal state when decoding a particular compilation unit. */ |
409 | struct dwarf2_cu | |
410 | { | |
fcd3b13d SM |
411 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
412 | ~dwarf2_cu (); | |
413 | ||
414 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
415 | ||
c24bdb02 KS |
416 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
417 | Create the set of symtabs used by this TU, or if this TU is sharing | |
418 | symtabs with another TU and the symtabs have already been created | |
419 | then restore those symtabs in the line header. | |
420 | We don't need the pc/line-number mapping for type units. */ | |
421 | void setup_type_unit_groups (struct die_info *die); | |
422 | ||
423 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
424 | buildsym_compunit constructor. */ | |
425 | struct compunit_symtab *start_symtab (const char *name, | |
426 | const char *comp_dir, | |
427 | CORE_ADDR low_pc); | |
428 | ||
429 | /* Reset the builder. */ | |
430 | void reset_builder () { m_builder.reset (); } | |
431 | ||
d00adf39 | 432 | /* The header of the compilation unit. */ |
fcd3b13d | 433 | struct comp_unit_head header {}; |
e142c38c | 434 | |
d00adf39 | 435 | /* Base address of this compilation unit. */ |
fcd3b13d | 436 | CORE_ADDR base_address = 0; |
d00adf39 DE |
437 | |
438 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 439 | int base_known = 0; |
d00adf39 | 440 | |
e142c38c | 441 | /* The language we are debugging. */ |
fcd3b13d SM |
442 | enum language language = language_unknown; |
443 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 444 | |
fcd3b13d | 445 | const char *producer = nullptr; |
b0f35d58 | 446 | |
c24bdb02 | 447 | private: |
804d2729 TT |
448 | /* The symtab builder for this CU. This is only non-NULL when full |
449 | symbols are being read. */ | |
c24bdb02 | 450 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 451 | |
c24bdb02 | 452 | public: |
e142c38c DJ |
453 | /* The generic symbol table building routines have separate lists for |
454 | file scope symbols and all all other scopes (local scopes). So | |
455 | we need to select the right one to pass to add_symbol_to_list(). | |
456 | We do it by keeping a pointer to the correct list in list_in_scope. | |
457 | ||
458 | FIXME: The original dwarf code just treated the file scope as the | |
459 | first local scope, and all other local scopes as nested local | |
460 | scopes, and worked fine. Check to see if we really need to | |
461 | distinguish these in buildsym.c. */ | |
fcd3b13d | 462 | struct pending **list_in_scope = nullptr; |
e142c38c | 463 | |
b64f50a1 JK |
464 | /* Hash table holding all the loaded partial DIEs |
465 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 466 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
467 | |
468 | /* Storage for things with the same lifetime as this read-in compilation | |
469 | unit, including partial DIEs. */ | |
fcd3b13d | 470 | auto_obstack comp_unit_obstack; |
72bf9492 | 471 | |
ae038cb0 DJ |
472 | /* When multiple dwarf2_cu structures are living in memory, this field |
473 | chains them all together, so that they can be released efficiently. | |
474 | We will probably also want a generation counter so that most-recently-used | |
475 | compilation units are cached... */ | |
fcd3b13d | 476 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 477 | |
69d751e3 | 478 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
479 | struct dwarf2_per_cu_data *per_cu; |
480 | ||
481 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 482 | int last_used = 0; |
ae038cb0 | 483 | |
b64f50a1 JK |
484 | /* A hash table of DIE cu_offset for following references with |
485 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 486 | htab_t die_hash = nullptr; |
10b3939b DJ |
487 | |
488 | /* Full DIEs if read in. */ | |
fcd3b13d | 489 | struct die_info *dies = nullptr; |
10b3939b DJ |
490 | |
491 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
492 | units referenced by this one. Only set during full symbol processing; | |
493 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 494 | htab_t dependencies = nullptr; |
10b3939b | 495 | |
cb1df416 | 496 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 497 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
498 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
499 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
500 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
501 | to the line header as long as this DIE is being processed. See | |
502 | process_die_scope. */ | |
fcd3b13d | 503 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 504 | |
3da10d80 KS |
505 | /* A list of methods which need to have physnames computed |
506 | after all type information has been read. */ | |
c89b44cd | 507 | std::vector<delayed_method_info> method_list; |
3da10d80 | 508 | |
96408a79 | 509 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 510 | htab_t call_site_htab = nullptr; |
96408a79 | 511 | |
034e5797 DE |
512 | /* Non-NULL if this CU came from a DWO file. |
513 | There is an invariant here that is important to remember: | |
514 | Except for attributes copied from the top level DIE in the "main" | |
515 | (or "stub") file in preparation for reading the DWO file | |
516 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
517 | Either there isn't a DWO file (in which case this is NULL and the point | |
518 | is moot), or there is and either we're not going to read it (in which | |
519 | case this is NULL) or there is and we are reading it (in which case this | |
520 | is non-NULL). */ | |
fcd3b13d | 521 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
522 | |
523 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
524 | (zero is a valid value though). | |
1dbab08b | 525 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 526 | ULONGEST addr_base = 0; |
3019eac3 | 527 | |
2e3cf129 DE |
528 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
529 | (zero is a valid value though). | |
1dbab08b | 530 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 531 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
532 | be used without needing to know whether DWO files are in use or not. |
533 | N.B. This does not apply to DW_AT_ranges appearing in | |
534 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
535 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
536 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
537 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 538 | ULONGEST ranges_base = 0; |
2e3cf129 | 539 | |
c9317f21 TT |
540 | /* When reading debug info generated by older versions of rustc, we |
541 | have to rewrite some union types to be struct types with a | |
542 | variant part. This rewriting must be done after the CU is fully | |
543 | read in, because otherwise at the point of rewriting some struct | |
544 | type might not have been fully processed. So, we keep a list of | |
545 | all such types here and process them after expansion. */ | |
546 | std::vector<struct type *> rust_unions; | |
547 | ||
ae038cb0 | 548 | /* Mark used when releasing cached dies. */ |
9068261f | 549 | bool mark : 1; |
ae038cb0 | 550 | |
8be455d7 JK |
551 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
552 | This test is imperfect as there may exist optimized debug code not using | |
553 | any location list and still facing inlining issues if handled as | |
554 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 555 | bool has_loclist : 1; |
ba919b58 | 556 | |
9068261f | 557 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
558 | if all the producer_is_* fields are valid. This information is cached |
559 | because profiling CU expansion showed excessive time spent in | |
560 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
561 | bool checked_producer : 1; |
562 | bool producer_is_gxx_lt_4_6 : 1; | |
563 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 564 | bool producer_is_icc : 1; |
9068261f | 565 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 566 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 567 | |
9068261f | 568 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
569 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
570 | this information, but later versions do. */ | |
571 | ||
9068261f | 572 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
573 | |
574 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
575 | |
576 | /* If this CU was inherited by another CU (via specification, | |
577 | abstract_origin, etc), this is the ancestor CU. */ | |
578 | dwarf2_cu *ancestor; | |
579 | ||
580 | /* Get the buildsym_compunit for this CU. */ | |
581 | buildsym_compunit *get_builder () | |
582 | { | |
583 | /* If this CU has a builder associated with it, use that. */ | |
584 | if (m_builder != nullptr) | |
585 | return m_builder.get (); | |
586 | ||
587 | /* Otherwise, search ancestors for a valid builder. */ | |
588 | if (ancestor != nullptr) | |
589 | return ancestor->get_builder (); | |
590 | ||
591 | return nullptr; | |
592 | } | |
e7c27a73 DJ |
593 | }; |
594 | ||
094b34ac DE |
595 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
596 | This includes type_unit_group and quick_file_names. */ | |
597 | ||
598 | struct stmt_list_hash | |
599 | { | |
600 | /* The DWO unit this table is from or NULL if there is none. */ | |
601 | struct dwo_unit *dwo_unit; | |
602 | ||
603 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 604 | sect_offset line_sect_off; |
094b34ac DE |
605 | }; |
606 | ||
f4dc4d17 DE |
607 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
608 | an object of this type. */ | |
609 | ||
610 | struct type_unit_group | |
611 | { | |
0186c6a7 | 612 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
613 | To simplify things we create an artificial CU that "includes" all the |
614 | type units using this stmt_list so that the rest of the code still has | |
615 | a "per_cu" handle on the symtab. | |
616 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 617 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
618 | struct dwarf2_per_cu_data per_cu; |
619 | ||
0186c6a7 DE |
620 | /* The TUs that share this DW_AT_stmt_list entry. |
621 | This is added to while parsing type units to build partial symtabs, | |
622 | and is deleted afterwards and not used again. */ | |
623 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 624 | |
43f3e411 | 625 | /* The compunit symtab. |
094b34ac | 626 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
627 | so we create an essentially anonymous symtab as the compunit symtab. */ |
628 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 629 | |
094b34ac DE |
630 | /* The data used to construct the hash key. */ |
631 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
632 | |
633 | /* The number of symtabs from the line header. | |
634 | The value here must match line_header.num_file_names. */ | |
635 | unsigned int num_symtabs; | |
636 | ||
637 | /* The symbol tables for this TU (obtained from the files listed in | |
638 | DW_AT_stmt_list). | |
639 | WARNING: The order of entries here must match the order of entries | |
640 | in the line header. After the first TU using this type_unit_group, the | |
641 | line header for the subsequent TUs is recreated from this. This is done | |
642 | because we need to use the same symtabs for each TU using the same | |
643 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
644 | there's no guarantee the line header doesn't have duplicate entries. */ | |
645 | struct symtab **symtabs; | |
646 | }; | |
647 | ||
73869dc2 | 648 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
649 | |
650 | struct dwo_sections | |
651 | { | |
652 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
653 | struct dwarf2_section_info line; |
654 | struct dwarf2_section_info loc; | |
43988095 | 655 | struct dwarf2_section_info loclists; |
09262596 DE |
656 | struct dwarf2_section_info macinfo; |
657 | struct dwarf2_section_info macro; | |
3019eac3 DE |
658 | struct dwarf2_section_info str; |
659 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
660 | /* In the case of a virtual DWO file, these two are unused. */ |
661 | struct dwarf2_section_info info; | |
fd5866f6 | 662 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
663 | }; |
664 | ||
c88ee1f0 | 665 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
666 | |
667 | struct dwo_unit | |
668 | { | |
669 | /* Backlink to the containing struct dwo_file. */ | |
670 | struct dwo_file *dwo_file; | |
671 | ||
672 | /* The "id" that distinguishes this CU/TU. | |
673 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
674 | Since signatures came first, we stick with it for consistency. */ | |
675 | ULONGEST signature; | |
676 | ||
677 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 678 | struct dwarf2_section_info *section; |
3019eac3 | 679 | |
9c541725 PA |
680 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
681 | sect_offset sect_off; | |
3019eac3 DE |
682 | unsigned int length; |
683 | ||
684 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
685 | cu_offset type_offset_in_tu; | |
686 | }; | |
687 | ||
73869dc2 DE |
688 | /* include/dwarf2.h defines the DWP section codes. |
689 | It defines a max value but it doesn't define a min value, which we | |
690 | use for error checking, so provide one. */ | |
691 | ||
692 | enum dwp_v2_section_ids | |
693 | { | |
694 | DW_SECT_MIN = 1 | |
695 | }; | |
696 | ||
80626a55 | 697 | /* Data for one DWO file. |
57d63ce2 DE |
698 | |
699 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
700 | appears in a DWP file). DWP files don't really have DWO files per se - | |
701 | comdat folding of types "loses" the DWO file they came from, and from | |
702 | a high level view DWP files appear to contain a mass of random types. | |
703 | However, to maintain consistency with the non-DWP case we pretend DWP | |
704 | files contain virtual DWO files, and we assign each TU with one virtual | |
705 | DWO file (generally based on the line and abbrev section offsets - | |
706 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
707 | |
708 | struct dwo_file | |
709 | { | |
51ac9db5 SM |
710 | dwo_file () = default; |
711 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
712 | ||
0ac5b59e | 713 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
714 | For virtual DWO files the name is constructed from the section offsets |
715 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
716 | from related CU+TUs. */ | |
51ac9db5 | 717 | const char *dwo_name = nullptr; |
0ac5b59e DE |
718 | |
719 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 720 | const char *comp_dir = nullptr; |
3019eac3 | 721 | |
80626a55 DE |
722 | /* The bfd, when the file is open. Otherwise this is NULL. |
723 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 724 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 725 | |
73869dc2 DE |
726 | /* The sections that make up this DWO file. |
727 | Remember that for virtual DWO files in DWP V2, these are virtual | |
728 | sections (for lack of a better name). */ | |
51ac9db5 | 729 | struct dwo_sections sections {}; |
3019eac3 | 730 | |
33c5cd75 DB |
731 | /* The CUs in the file. |
732 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
733 | an extension to handle LLVM's Link Time Optimization output (where | |
734 | multiple source files may be compiled into a single object/dwo pair). */ | |
51ac9db5 | 735 | htab_t cus {}; |
3019eac3 DE |
736 | |
737 | /* Table of TUs in the file. | |
738 | Each element is a struct dwo_unit. */ | |
51ac9db5 | 739 | htab_t tus {}; |
3019eac3 DE |
740 | }; |
741 | ||
80626a55 DE |
742 | /* These sections are what may appear in a DWP file. */ |
743 | ||
744 | struct dwp_sections | |
745 | { | |
73869dc2 | 746 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
747 | struct dwarf2_section_info str; |
748 | struct dwarf2_section_info cu_index; | |
749 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
750 | |
751 | /* These are only used by DWP version 2 files. | |
752 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
753 | sections are referenced by section number, and are not recorded here. | |
754 | In DWP version 2 there is at most one copy of all these sections, each | |
755 | section being (effectively) comprised of the concatenation of all of the | |
756 | individual sections that exist in the version 1 format. | |
757 | To keep the code simple we treat each of these concatenated pieces as a | |
758 | section itself (a virtual section?). */ | |
759 | struct dwarf2_section_info abbrev; | |
760 | struct dwarf2_section_info info; | |
761 | struct dwarf2_section_info line; | |
762 | struct dwarf2_section_info loc; | |
763 | struct dwarf2_section_info macinfo; | |
764 | struct dwarf2_section_info macro; | |
765 | struct dwarf2_section_info str_offsets; | |
766 | struct dwarf2_section_info types; | |
80626a55 DE |
767 | }; |
768 | ||
73869dc2 DE |
769 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
770 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 771 | |
73869dc2 | 772 | struct virtual_v1_dwo_sections |
80626a55 DE |
773 | { |
774 | struct dwarf2_section_info abbrev; | |
775 | struct dwarf2_section_info line; | |
776 | struct dwarf2_section_info loc; | |
777 | struct dwarf2_section_info macinfo; | |
778 | struct dwarf2_section_info macro; | |
779 | struct dwarf2_section_info str_offsets; | |
780 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 781 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
782 | struct dwarf2_section_info info_or_types; |
783 | }; | |
784 | ||
73869dc2 DE |
785 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
786 | In version 2, the sections of the DWO files are concatenated together | |
787 | and stored in one section of that name. Thus each ELF section contains | |
788 | several "virtual" sections. */ | |
789 | ||
790 | struct virtual_v2_dwo_sections | |
791 | { | |
792 | bfd_size_type abbrev_offset; | |
793 | bfd_size_type abbrev_size; | |
794 | ||
795 | bfd_size_type line_offset; | |
796 | bfd_size_type line_size; | |
797 | ||
798 | bfd_size_type loc_offset; | |
799 | bfd_size_type loc_size; | |
800 | ||
801 | bfd_size_type macinfo_offset; | |
802 | bfd_size_type macinfo_size; | |
803 | ||
804 | bfd_size_type macro_offset; | |
805 | bfd_size_type macro_size; | |
806 | ||
807 | bfd_size_type str_offsets_offset; | |
808 | bfd_size_type str_offsets_size; | |
809 | ||
810 | /* Each DWP hash table entry records one CU or one TU. | |
811 | That is recorded here, and copied to dwo_unit.section. */ | |
812 | bfd_size_type info_or_types_offset; | |
813 | bfd_size_type info_or_types_size; | |
814 | }; | |
815 | ||
80626a55 DE |
816 | /* Contents of DWP hash tables. */ |
817 | ||
818 | struct dwp_hash_table | |
819 | { | |
73869dc2 | 820 | uint32_t version, nr_columns; |
80626a55 | 821 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
822 | const gdb_byte *hash_table, *unit_table; |
823 | union | |
824 | { | |
825 | struct | |
826 | { | |
827 | const gdb_byte *indices; | |
828 | } v1; | |
829 | struct | |
830 | { | |
831 | /* This is indexed by column number and gives the id of the section | |
832 | in that column. */ | |
833 | #define MAX_NR_V2_DWO_SECTIONS \ | |
834 | (1 /* .debug_info or .debug_types */ \ | |
835 | + 1 /* .debug_abbrev */ \ | |
836 | + 1 /* .debug_line */ \ | |
837 | + 1 /* .debug_loc */ \ | |
838 | + 1 /* .debug_str_offsets */ \ | |
839 | + 1 /* .debug_macro or .debug_macinfo */) | |
840 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
841 | const gdb_byte *offsets; | |
842 | const gdb_byte *sizes; | |
843 | } v2; | |
844 | } section_pool; | |
80626a55 DE |
845 | }; |
846 | ||
847 | /* Data for one DWP file. */ | |
848 | ||
849 | struct dwp_file | |
850 | { | |
400174b1 TT |
851 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
852 | : name (name_), | |
853 | dbfd (std::move (abfd)) | |
854 | { | |
855 | } | |
856 | ||
80626a55 DE |
857 | /* Name of the file. */ |
858 | const char *name; | |
859 | ||
73869dc2 | 860 | /* File format version. */ |
400174b1 | 861 | int version = 0; |
73869dc2 | 862 | |
93417882 | 863 | /* The bfd. */ |
400174b1 | 864 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
865 | |
866 | /* Section info for this file. */ | |
400174b1 | 867 | struct dwp_sections sections {}; |
80626a55 | 868 | |
57d63ce2 | 869 | /* Table of CUs in the file. */ |
400174b1 | 870 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
871 | |
872 | /* Table of TUs in the file. */ | |
400174b1 | 873 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 874 | |
19ac8c2e | 875 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
876 | htab_t loaded_cus {}; |
877 | htab_t loaded_tus {}; | |
80626a55 | 878 | |
73869dc2 DE |
879 | /* Table to map ELF section numbers to their sections. |
880 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
881 | unsigned int num_sections = 0; |
882 | asection **elf_sections = nullptr; | |
80626a55 DE |
883 | }; |
884 | ||
0963b4bd MS |
885 | /* Struct used to pass misc. parameters to read_die_and_children, et |
886 | al. which are used for both .debug_info and .debug_types dies. | |
887 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 888 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
889 | |
890 | struct die_reader_specs | |
891 | { | |
a32a8923 | 892 | /* The bfd of die_section. */ |
93311388 DE |
893 | bfd* abfd; |
894 | ||
895 | /* The CU of the DIE we are parsing. */ | |
896 | struct dwarf2_cu *cu; | |
897 | ||
80626a55 | 898 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
899 | struct dwo_file *dwo_file; |
900 | ||
dee91e82 | 901 | /* The section the die comes from. |
3019eac3 | 902 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
903 | struct dwarf2_section_info *die_section; |
904 | ||
905 | /* die_section->buffer. */ | |
d521ce57 | 906 | const gdb_byte *buffer; |
f664829e DE |
907 | |
908 | /* The end of the buffer. */ | |
909 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
910 | |
911 | /* The value of the DW_AT_comp_dir attribute. */ | |
912 | const char *comp_dir; | |
685af9cd TT |
913 | |
914 | /* The abbreviation table to use when reading the DIEs. */ | |
915 | struct abbrev_table *abbrev_table; | |
93311388 DE |
916 | }; |
917 | ||
fd820528 | 918 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 919 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 920 | const gdb_byte *info_ptr, |
dee91e82 DE |
921 | struct die_info *comp_unit_die, |
922 | int has_children, | |
923 | void *data); | |
924 | ||
ecfb656c PA |
925 | /* A 1-based directory index. This is a strong typedef to prevent |
926 | accidentally using a directory index as a 0-based index into an | |
927 | array/vector. */ | |
928 | enum class dir_index : unsigned int {}; | |
929 | ||
930 | /* Likewise, a 1-based file name index. */ | |
931 | enum class file_name_index : unsigned int {}; | |
932 | ||
52059ffd TT |
933 | struct file_entry |
934 | { | |
fff8551c PA |
935 | file_entry () = default; |
936 | ||
ecfb656c | 937 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
938 | unsigned int mod_time_, unsigned int length_) |
939 | : name (name_), | |
ecfb656c | 940 | d_index (d_index_), |
fff8551c PA |
941 | mod_time (mod_time_), |
942 | length (length_) | |
943 | {} | |
944 | ||
ecfb656c PA |
945 | /* Return the include directory at D_INDEX stored in LH. Returns |
946 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
947 | const char *include_dir (const line_header *lh) const; |
948 | ||
fff8551c PA |
949 | /* The file name. Note this is an observing pointer. The memory is |
950 | owned by debug_line_buffer. */ | |
951 | const char *name {}; | |
952 | ||
8c43009f | 953 | /* The directory index (1-based). */ |
ecfb656c | 954 | dir_index d_index {}; |
fff8551c PA |
955 | |
956 | unsigned int mod_time {}; | |
957 | ||
958 | unsigned int length {}; | |
959 | ||
960 | /* True if referenced by the Line Number Program. */ | |
961 | bool included_p {}; | |
962 | ||
83769d0b | 963 | /* The associated symbol table, if any. */ |
fff8551c | 964 | struct symtab *symtab {}; |
52059ffd TT |
965 | }; |
966 | ||
debd256d JB |
967 | /* The line number information for a compilation unit (found in the |
968 | .debug_line section) begins with a "statement program header", | |
969 | which contains the following information. */ | |
970 | struct line_header | |
971 | { | |
fff8551c PA |
972 | line_header () |
973 | : offset_in_dwz {} | |
974 | {} | |
975 | ||
976 | /* Add an entry to the include directory table. */ | |
977 | void add_include_dir (const char *include_dir); | |
978 | ||
979 | /* Add an entry to the file name table. */ | |
ecfb656c | 980 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
981 | unsigned int mod_time, unsigned int length); |
982 | ||
ecfb656c | 983 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 984 | is out of bounds. */ |
ecfb656c | 985 | const char *include_dir_at (dir_index index) const |
8c43009f | 986 | { |
ecfb656c PA |
987 | /* Convert directory index number (1-based) to vector index |
988 | (0-based). */ | |
989 | size_t vec_index = to_underlying (index) - 1; | |
990 | ||
991 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 992 | return NULL; |
ecfb656c | 993 | return include_dirs[vec_index]; |
8c43009f PA |
994 | } |
995 | ||
ecfb656c | 996 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 997 | is out of bounds. */ |
ecfb656c | 998 | file_entry *file_name_at (file_name_index index) |
8c43009f | 999 | { |
ecfb656c PA |
1000 | /* Convert file name index number (1-based) to vector index |
1001 | (0-based). */ | |
1002 | size_t vec_index = to_underlying (index) - 1; | |
1003 | ||
1004 | if (vec_index >= file_names.size ()) | |
fff8551c | 1005 | return NULL; |
ecfb656c | 1006 | return &file_names[vec_index]; |
fff8551c PA |
1007 | } |
1008 | ||
527f3840 | 1009 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1010 | sect_offset sect_off {}; |
527f3840 JK |
1011 | |
1012 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1013 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1014 | ||
1015 | unsigned int total_length {}; | |
1016 | unsigned short version {}; | |
1017 | unsigned int header_length {}; | |
1018 | unsigned char minimum_instruction_length {}; | |
1019 | unsigned char maximum_ops_per_instruction {}; | |
1020 | unsigned char default_is_stmt {}; | |
1021 | int line_base {}; | |
1022 | unsigned char line_range {}; | |
1023 | unsigned char opcode_base {}; | |
debd256d JB |
1024 | |
1025 | /* standard_opcode_lengths[i] is the number of operands for the | |
1026 | standard opcode whose value is i. This means that | |
1027 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1028 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1029 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1030 | |
fff8551c PA |
1031 | /* The include_directories table. Note these are observing |
1032 | pointers. The memory is owned by debug_line_buffer. */ | |
1033 | std::vector<const char *> include_dirs; | |
debd256d | 1034 | |
fff8551c PA |
1035 | /* The file_names table. */ |
1036 | std::vector<file_entry> file_names; | |
debd256d JB |
1037 | |
1038 | /* The start and end of the statement program following this | |
6502dd73 | 1039 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1040 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1041 | }; |
c906108c | 1042 | |
fff8551c PA |
1043 | typedef std::unique_ptr<line_header> line_header_up; |
1044 | ||
8c43009f PA |
1045 | const char * |
1046 | file_entry::include_dir (const line_header *lh) const | |
1047 | { | |
ecfb656c | 1048 | return lh->include_dir_at (d_index); |
8c43009f PA |
1049 | } |
1050 | ||
c906108c | 1051 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1052 | need this much information. */ |
6f06d47b | 1053 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1054 | { |
6f06d47b YQ |
1055 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1056 | ||
1057 | /* Disable assign but still keep copy ctor, which is needed | |
1058 | load_partial_dies. */ | |
1059 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1060 | ||
52356b79 YQ |
1061 | /* Adjust the partial die before generating a symbol for it. This |
1062 | function may set the is_external flag or change the DIE's | |
1063 | name. */ | |
1064 | void fixup (struct dwarf2_cu *cu); | |
1065 | ||
48fbe735 YQ |
1066 | /* Read a minimal amount of information into the minimal die |
1067 | structure. */ | |
1068 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1069 | const struct abbrev_info &abbrev, | |
1070 | const gdb_byte *info_ptr); | |
1071 | ||
72bf9492 | 1072 | /* Offset of this DIE. */ |
6f06d47b | 1073 | const sect_offset sect_off; |
72bf9492 DJ |
1074 | |
1075 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1076 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1077 | |
72bf9492 | 1078 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1079 | const unsigned int has_children : 1; |
1080 | ||
72bf9492 DJ |
1081 | unsigned int is_external : 1; |
1082 | unsigned int is_declaration : 1; | |
1083 | unsigned int has_type : 1; | |
1084 | unsigned int has_specification : 1; | |
1085 | unsigned int has_pc_info : 1; | |
481860b3 | 1086 | unsigned int may_be_inlined : 1; |
72bf9492 | 1087 | |
0c1b455e TT |
1088 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1089 | unsigned int main_subprogram : 1; | |
1090 | ||
72bf9492 DJ |
1091 | /* Flag set if the SCOPE field of this structure has been |
1092 | computed. */ | |
1093 | unsigned int scope_set : 1; | |
1094 | ||
fa4028e9 JB |
1095 | /* Flag set if the DIE has a byte_size attribute. */ |
1096 | unsigned int has_byte_size : 1; | |
1097 | ||
ff908ebf AW |
1098 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1099 | unsigned int has_const_value : 1; | |
1100 | ||
98bfdba5 PA |
1101 | /* Flag set if any of the DIE's children are template arguments. */ |
1102 | unsigned int has_template_arguments : 1; | |
1103 | ||
52356b79 | 1104 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1105 | unsigned int fixup_called : 1; |
1106 | ||
36586728 TT |
1107 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1108 | unsigned int is_dwz : 1; | |
1109 | ||
1110 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1111 | unsigned int spec_is_dwz : 1; | |
1112 | ||
72bf9492 | 1113 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1114 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1115 | const char *name = nullptr; |
72bf9492 | 1116 | |
abc72ce4 | 1117 | /* The linkage name, if present. */ |
6f06d47b | 1118 | const char *linkage_name = nullptr; |
abc72ce4 | 1119 | |
72bf9492 DJ |
1120 | /* The scope to prepend to our children. This is generally |
1121 | allocated on the comp_unit_obstack, so will disappear | |
1122 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1123 | const char *scope = nullptr; |
72bf9492 | 1124 | |
95554aad TT |
1125 | /* Some data associated with the partial DIE. The tag determines |
1126 | which field is live. */ | |
1127 | union | |
1128 | { | |
1129 | /* The location description associated with this DIE, if any. */ | |
1130 | struct dwarf_block *locdesc; | |
1131 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1132 | sect_offset sect_off; |
6f06d47b | 1133 | } d {}; |
72bf9492 DJ |
1134 | |
1135 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1136 | CORE_ADDR lowpc = 0; |
1137 | CORE_ADDR highpc = 0; | |
72bf9492 | 1138 | |
93311388 | 1139 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1140 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1141 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1142 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1143 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1144 | |
1145 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1146 | DW_AT_specification (or DW_AT_abstract_origin or | |
1147 | DW_AT_extension). */ | |
6f06d47b | 1148 | sect_offset spec_offset {}; |
72bf9492 DJ |
1149 | |
1150 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1151 | if any. */ | |
6f06d47b YQ |
1152 | struct partial_die_info *die_parent = nullptr; |
1153 | struct partial_die_info *die_child = nullptr; | |
1154 | struct partial_die_info *die_sibling = nullptr; | |
1155 | ||
1156 | friend struct partial_die_info * | |
1157 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1158 | ||
1159 | private: | |
1160 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1161 | partial_die_info (sect_offset sect_off) | |
1162 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1163 | { | |
1164 | } | |
1165 | ||
1166 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1167 | int has_children_) | |
1168 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1169 | { | |
1170 | is_external = 0; | |
1171 | is_declaration = 0; | |
1172 | has_type = 0; | |
1173 | has_specification = 0; | |
1174 | has_pc_info = 0; | |
1175 | may_be_inlined = 0; | |
1176 | main_subprogram = 0; | |
1177 | scope_set = 0; | |
1178 | has_byte_size = 0; | |
1179 | has_const_value = 0; | |
1180 | has_template_arguments = 0; | |
1181 | fixup_called = 0; | |
1182 | is_dwz = 0; | |
1183 | spec_is_dwz = 0; | |
1184 | } | |
c906108c SS |
1185 | }; |
1186 | ||
0963b4bd | 1187 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1188 | struct abbrev_info |
1189 | { | |
1190 | unsigned int number; /* number identifying abbrev */ | |
1191 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1192 | unsigned short has_children; /* boolean */ |
1193 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1194 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1195 | struct abbrev_info *next; /* next in chain */ | |
1196 | }; | |
1197 | ||
1198 | struct attr_abbrev | |
1199 | { | |
9d25dd43 DE |
1200 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1201 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1202 | |
1203 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1204 | LONGEST implicit_const; | |
c906108c SS |
1205 | }; |
1206 | ||
433df2d4 DE |
1207 | /* Size of abbrev_table.abbrev_hash_table. */ |
1208 | #define ABBREV_HASH_SIZE 121 | |
1209 | ||
1210 | /* Top level data structure to contain an abbreviation table. */ | |
1211 | ||
1212 | struct abbrev_table | |
1213 | { | |
685af9cd TT |
1214 | explicit abbrev_table (sect_offset off) |
1215 | : sect_off (off) | |
1216 | { | |
4a17f768 | 1217 | m_abbrevs = |
685af9cd | 1218 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1219 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1220 | } |
1221 | ||
1222 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1223 | ||
1224 | /* Allocate space for a struct abbrev_info object in | |
1225 | ABBREV_TABLE. */ | |
1226 | struct abbrev_info *alloc_abbrev (); | |
1227 | ||
1228 | /* Add an abbreviation to the table. */ | |
1229 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1230 | ||
1231 | /* Look up an abbrev in the table. | |
1232 | Returns NULL if the abbrev is not found. */ | |
1233 | ||
1234 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1235 | ||
1236 | ||
f4dc4d17 DE |
1237 | /* Where the abbrev table came from. |
1238 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1239 | const sect_offset sect_off; |
433df2d4 DE |
1240 | |
1241 | /* Storage for the abbrev table. */ | |
685af9cd | 1242 | auto_obstack abbrev_obstack; |
433df2d4 | 1243 | |
4a17f768 YQ |
1244 | private: |
1245 | ||
433df2d4 DE |
1246 | /* Hash table of abbrevs. |
1247 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1248 | It could be statically allocated, but the previous code didn't so we | |
1249 | don't either. */ | |
4a17f768 | 1250 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1251 | }; |
1252 | ||
685af9cd TT |
1253 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1254 | ||
0963b4bd | 1255 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1256 | struct attribute |
1257 | { | |
9d25dd43 | 1258 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1259 | ENUM_BITFIELD(dwarf_form) form : 15; |
1260 | ||
1261 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1262 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1263 | here for better struct attribute alignment. */ | |
1264 | unsigned int string_is_canonical : 1; | |
1265 | ||
b60c80d6 DJ |
1266 | union |
1267 | { | |
15d034d0 | 1268 | const char *str; |
b60c80d6 | 1269 | struct dwarf_block *blk; |
43bbcdc2 PH |
1270 | ULONGEST unsnd; |
1271 | LONGEST snd; | |
b60c80d6 | 1272 | CORE_ADDR addr; |
ac9ec31b | 1273 | ULONGEST signature; |
b60c80d6 DJ |
1274 | } |
1275 | u; | |
1276 | }; | |
1277 | ||
0963b4bd | 1278 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1279 | struct die_info |
1280 | { | |
76815b17 DE |
1281 | /* DWARF-2 tag for this DIE. */ |
1282 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1283 | ||
1284 | /* Number of attributes */ | |
98bfdba5 PA |
1285 | unsigned char num_attrs; |
1286 | ||
1287 | /* True if we're presently building the full type name for the | |
1288 | type derived from this DIE. */ | |
1289 | unsigned char building_fullname : 1; | |
76815b17 | 1290 | |
adde2bff DE |
1291 | /* True if this die is in process. PR 16581. */ |
1292 | unsigned char in_process : 1; | |
1293 | ||
76815b17 DE |
1294 | /* Abbrev number */ |
1295 | unsigned int abbrev; | |
1296 | ||
93311388 | 1297 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1298 | sect_offset sect_off; |
78ba4af6 JB |
1299 | |
1300 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1301 | points to this die's parent; CHILD points to the first child of | |
1302 | this node; and all the children of a given node are chained | |
4950bc1c | 1303 | together via their SIBLING fields. */ |
639d11d3 DC |
1304 | struct die_info *child; /* Its first child, if any. */ |
1305 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1306 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1307 | |
b60c80d6 DJ |
1308 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1309 | zero, but it's not common and zero-sized arrays are not | |
1310 | sufficiently portable C. */ | |
1311 | struct attribute attrs[1]; | |
c906108c SS |
1312 | }; |
1313 | ||
0963b4bd | 1314 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1315 | |
1316 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1317 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1318 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1319 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1320 | #define DW_SND(attr) ((attr)->u.snd) | |
1321 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1322 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1323 | |
0963b4bd | 1324 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1325 | struct dwarf_block |
1326 | { | |
56eb65bd | 1327 | size_t size; |
1d6edc3c JK |
1328 | |
1329 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1330 | const gdb_byte *data; |
c906108c SS |
1331 | }; |
1332 | ||
c906108c SS |
1333 | #ifndef ATTR_ALLOC_CHUNK |
1334 | #define ATTR_ALLOC_CHUNK 4 | |
1335 | #endif | |
1336 | ||
c906108c SS |
1337 | /* Allocate fields for structs, unions and enums in this size. */ |
1338 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1339 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1340 | #endif | |
1341 | ||
c906108c SS |
1342 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1343 | but this would require a corresponding change in unpack_field_as_long | |
1344 | and friends. */ | |
1345 | static int bits_per_byte = 8; | |
1346 | ||
2ddeaf8a TT |
1347 | /* When reading a variant or variant part, we track a bit more |
1348 | information about the field, and store it in an object of this | |
1349 | type. */ | |
1350 | ||
1351 | struct variant_field | |
1352 | { | |
1353 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1354 | value. */ | |
1355 | ULONGEST discriminant_value; | |
1356 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1357 | default branch. */ | |
1358 | bool default_branch; | |
1359 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1360 | field is the discriminant. */ | |
1361 | bool is_discriminant; | |
1362 | }; | |
1363 | ||
52059ffd TT |
1364 | struct nextfield |
1365 | { | |
be2daae6 TT |
1366 | int accessibility = 0; |
1367 | int virtuality = 0; | |
2ddeaf8a | 1368 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1369 | struct variant_field variant {}; |
1370 | struct field field {}; | |
52059ffd TT |
1371 | }; |
1372 | ||
1373 | struct fnfieldlist | |
1374 | { | |
be2daae6 TT |
1375 | const char *name = nullptr; |
1376 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1377 | }; |
1378 | ||
c906108c SS |
1379 | /* The routines that read and process dies for a C struct or C++ class |
1380 | pass lists of data member fields and lists of member function fields | |
1381 | in an instance of a field_info structure, as defined below. */ | |
1382 | struct field_info | |
c5aa993b | 1383 | { |
0963b4bd | 1384 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1385 | std::vector<struct nextfield> fields; |
1386 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1387 | |
7d0ccb61 | 1388 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1389 | int nfields = 0; |
c906108c | 1390 | |
c5aa993b | 1391 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1392 | int non_public_fields = 0; |
c906108c | 1393 | |
c5aa993b JM |
1394 | /* Member function fieldlist array, contains name of possibly overloaded |
1395 | member function, number of overloaded member functions and a pointer | |
1396 | to the head of the member function field chain. */ | |
be2daae6 | 1397 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1398 | |
1399 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1400 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1401 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1402 | |
1403 | /* Nested types defined by this class and the number of elements in this | |
1404 | list. */ | |
be2daae6 | 1405 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1406 | }; |
c906108c | 1407 | |
10b3939b DJ |
1408 | /* One item on the queue of compilation units to read in full symbols |
1409 | for. */ | |
1410 | struct dwarf2_queue_item | |
1411 | { | |
1412 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1413 | enum language pretend_language; |
10b3939b DJ |
1414 | struct dwarf2_queue_item *next; |
1415 | }; | |
1416 | ||
1417 | /* The current queue. */ | |
1418 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1419 | ||
ae038cb0 DJ |
1420 | /* Loaded secondary compilation units are kept in memory until they |
1421 | have not been referenced for the processing of this many | |
1422 | compilation units. Set this to zero to disable caching. Cache | |
1423 | sizes of up to at least twenty will improve startup time for | |
1424 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1425 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1426 | static void |
b4f54984 DE |
1427 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1428 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1429 | { |
3e43a32a | 1430 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1431 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1432 | value); |
1433 | } | |
4390d890 | 1434 | \f |
c906108c SS |
1435 | /* local function prototypes */ |
1436 | ||
a32a8923 DE |
1437 | static const char *get_section_name (const struct dwarf2_section_info *); |
1438 | ||
1439 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1440 | ||
918dd910 JK |
1441 | static void dwarf2_find_base_address (struct die_info *die, |
1442 | struct dwarf2_cu *cu); | |
1443 | ||
0018ea6f DE |
1444 | static struct partial_symtab *create_partial_symtab |
1445 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1446 | ||
f1902523 JK |
1447 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1448 | const gdb_byte *info_ptr, | |
1449 | struct die_info *type_unit_die, | |
1450 | int has_children, void *data); | |
1451 | ||
ed2dc618 SM |
1452 | static void dwarf2_build_psymtabs_hard |
1453 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1454 | |
72bf9492 DJ |
1455 | static void scan_partial_symbols (struct partial_die_info *, |
1456 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1457 | int, struct dwarf2_cu *); |
c906108c | 1458 | |
72bf9492 DJ |
1459 | static void add_partial_symbol (struct partial_die_info *, |
1460 | struct dwarf2_cu *); | |
63d06c5c | 1461 | |
72bf9492 DJ |
1462 | static void add_partial_namespace (struct partial_die_info *pdi, |
1463 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1464 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1465 | |
5d7cb8df | 1466 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1467 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1468 | struct dwarf2_cu *cu); |
1469 | ||
72bf9492 DJ |
1470 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1471 | struct dwarf2_cu *cu); | |
91c24f0a | 1472 | |
bc30ff58 JB |
1473 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1474 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1475 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1476 | |
257e7a09 YQ |
1477 | static void dwarf2_read_symtab (struct partial_symtab *, |
1478 | struct objfile *); | |
c906108c | 1479 | |
a14ed312 | 1480 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1481 | |
685af9cd | 1482 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1483 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1484 | sect_offset); | |
433df2d4 | 1485 | |
d521ce57 | 1486 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1487 | |
dee91e82 | 1488 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1489 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1490 | |
fb816e8b TV |
1491 | /* A pair of partial_die_info and compilation unit. */ |
1492 | struct cu_partial_die_info | |
1493 | { | |
1494 | /* The compilation unit of the partial_die_info. */ | |
1495 | struct dwarf2_cu *cu; | |
1496 | /* A partial_die_info. */ | |
1497 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1498 | |
1499 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1500 | : cu (cu), | |
1501 | pdi (pdi) | |
1502 | { /* Nothhing. */ } | |
1503 | ||
1504 | private: | |
1505 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1506 | }; |
1507 | ||
122cf0f2 AB |
1508 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1509 | struct dwarf2_cu *); | |
72bf9492 | 1510 | |
d521ce57 TT |
1511 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1512 | struct attribute *, struct attr_abbrev *, | |
1513 | const gdb_byte *); | |
a8329558 | 1514 | |
a1855c1d | 1515 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1516 | |
a1855c1d | 1517 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1518 | |
a1855c1d | 1519 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1520 | |
15f18d14 AT |
1521 | /* Read the next three bytes (little-endian order) as an unsigned integer. */ |
1522 | static unsigned int read_3_bytes (bfd *, const gdb_byte *); | |
1523 | ||
a1855c1d | 1524 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1525 | |
a1855c1d | 1526 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1527 | |
d521ce57 | 1528 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1529 | unsigned int *); |
c906108c | 1530 | |
d521ce57 | 1531 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1532 | |
1533 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1534 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1535 | unsigned int *, unsigned int *); |
613e1657 | 1536 | |
d521ce57 TT |
1537 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1538 | const struct comp_unit_head *, | |
c764a876 DE |
1539 | unsigned int *); |
1540 | ||
d521ce57 | 1541 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1542 | |
ed2dc618 SM |
1543 | static sect_offset read_abbrev_offset |
1544 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1545 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1546 | |
d521ce57 | 1547 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1548 | |
d521ce57 | 1549 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1550 | |
ed2dc618 SM |
1551 | static const char *read_indirect_string |
1552 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1553 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1554 | |
ed2dc618 SM |
1555 | static const char *read_indirect_line_string |
1556 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1557 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1558 | |
ed2dc618 SM |
1559 | static const char *read_indirect_string_at_offset |
1560 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1561 | LONGEST str_offset); | |
927aa2e7 | 1562 | |
ed2dc618 SM |
1563 | static const char *read_indirect_string_from_dwz |
1564 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1565 | |
d521ce57 | 1566 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1567 | |
d521ce57 TT |
1568 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1569 | const gdb_byte *, | |
3019eac3 DE |
1570 | unsigned int *); |
1571 | ||
d521ce57 | 1572 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1573 | ULONGEST str_index); |
3019eac3 | 1574 | |
e142c38c | 1575 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1576 | |
e142c38c DJ |
1577 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1578 | struct dwarf2_cu *); | |
c906108c | 1579 | |
348e048f | 1580 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1581 | unsigned int); |
348e048f | 1582 | |
7d45c7c3 KB |
1583 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1584 | struct dwarf2_cu *cu); | |
1585 | ||
a084a2a6 AT |
1586 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1587 | ||
05cf31d1 JB |
1588 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1589 | struct dwarf2_cu *cu); | |
1590 | ||
e142c38c | 1591 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1592 | |
e142c38c | 1593 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1594 | struct dwarf2_cu **); |
63d06c5c | 1595 | |
9c541725 | 1596 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1597 | struct dwarf2_cu *cu); |
debd256d | 1598 | |
f3f5162e | 1599 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1600 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1601 | CORE_ADDR, int decode_mapping); |
c906108c | 1602 | |
804d2729 TT |
1603 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1604 | const char *); | |
c906108c | 1605 | |
a14ed312 | 1606 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1607 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1608 | |
ff39bb5e | 1609 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1610 | struct dwarf2_cu *); |
c906108c | 1611 | |
ff39bb5e | 1612 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1613 | struct type *type, |
1614 | const char *name, | |
1615 | struct obstack *obstack, | |
12df843f | 1616 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1617 | const gdb_byte **bytes, |
98bfdba5 | 1618 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1619 | |
e7c27a73 | 1620 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1621 | |
b4ba55a1 JB |
1622 | static int need_gnat_info (struct dwarf2_cu *); |
1623 | ||
3e43a32a MS |
1624 | static struct type *die_descriptive_type (struct die_info *, |
1625 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1626 | |
1627 | static void set_descriptive_type (struct type *, struct die_info *, | |
1628 | struct dwarf2_cu *); | |
1629 | ||
e7c27a73 DJ |
1630 | static struct type *die_containing_type (struct die_info *, |
1631 | struct dwarf2_cu *); | |
c906108c | 1632 | |
ff39bb5e | 1633 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1634 | struct dwarf2_cu *); |
c906108c | 1635 | |
f792889a | 1636 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1637 | |
673bfd45 DE |
1638 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1639 | ||
0d5cff50 | 1640 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1641 | |
6e70227d | 1642 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1643 | const char *suffix, int physname, |
1644 | struct dwarf2_cu *cu); | |
63d06c5c | 1645 | |
e7c27a73 | 1646 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1647 | |
348e048f DE |
1648 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1649 | ||
e7c27a73 | 1650 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1651 | |
e7c27a73 | 1652 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1653 | |
96408a79 SA |
1654 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1655 | ||
71a3c369 TT |
1656 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1657 | ||
ff013f42 JK |
1658 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1659 | struct dwarf2_cu *, struct partial_symtab *); | |
1660 | ||
3a2b436a | 1661 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1662 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1663 | enum pc_bounds_kind |
1664 | { | |
e385593e | 1665 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1666 | PC_BOUNDS_NOT_PRESENT, |
1667 | ||
e385593e JK |
1668 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1669 | were present but they do not form a valid range of PC addresses. */ | |
1670 | PC_BOUNDS_INVALID, | |
1671 | ||
3a2b436a JK |
1672 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1673 | PC_BOUNDS_RANGES, | |
1674 | ||
1675 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1676 | PC_BOUNDS_HIGH_LOW, | |
1677 | }; | |
1678 | ||
1679 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1680 | CORE_ADDR *, CORE_ADDR *, | |
1681 | struct dwarf2_cu *, | |
1682 | struct partial_symtab *); | |
c906108c | 1683 | |
fae299cd DC |
1684 | static void get_scope_pc_bounds (struct die_info *, |
1685 | CORE_ADDR *, CORE_ADDR *, | |
1686 | struct dwarf2_cu *); | |
1687 | ||
801e3a5b JB |
1688 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1689 | CORE_ADDR, struct dwarf2_cu *); | |
1690 | ||
a14ed312 | 1691 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1692 | struct dwarf2_cu *); |
c906108c | 1693 | |
a14ed312 | 1694 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1695 | struct type *, struct dwarf2_cu *); |
c906108c | 1696 | |
a14ed312 | 1697 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1698 | struct die_info *, struct type *, |
e7c27a73 | 1699 | struct dwarf2_cu *); |
c906108c | 1700 | |
a14ed312 | 1701 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1702 | struct type *, |
1703 | struct dwarf2_cu *); | |
c906108c | 1704 | |
134d01f1 | 1705 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1706 | |
e7c27a73 | 1707 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1708 | |
e7c27a73 | 1709 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1710 | |
5d7cb8df JK |
1711 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1712 | ||
804d2729 | 1713 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1714 | |
27aa8d6a SW |
1715 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1716 | ||
74921315 KS |
1717 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1718 | ||
f55ee35c JK |
1719 | static struct type *read_module_type (struct die_info *die, |
1720 | struct dwarf2_cu *cu); | |
1721 | ||
38d518c9 | 1722 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1723 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1724 | |
134d01f1 | 1725 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1726 | |
e7c27a73 | 1727 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1728 | |
6e70227d | 1729 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1730 | struct dwarf2_cu *); |
1731 | ||
bf6af496 | 1732 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1733 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1734 | struct die_info *); |
639d11d3 | 1735 | |
dee91e82 | 1736 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1737 | const gdb_byte *info_ptr, |
1738 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1739 | struct die_info *parent); |
1740 | ||
d521ce57 TT |
1741 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1742 | struct die_info **, const gdb_byte *, | |
1743 | int *, int); | |
3019eac3 | 1744 | |
d521ce57 TT |
1745 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1746 | struct die_info **, const gdb_byte *, | |
1747 | int *); | |
93311388 | 1748 | |
e7c27a73 | 1749 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1750 | |
15d034d0 TT |
1751 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1752 | struct obstack *); | |
71c25dea | 1753 | |
15d034d0 | 1754 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1755 | |
15d034d0 | 1756 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1757 | struct die_info *die, |
1758 | struct dwarf2_cu *cu); | |
1759 | ||
ca69b9e6 DE |
1760 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1761 | struct dwarf2_cu *cu); | |
1762 | ||
e142c38c | 1763 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1764 | struct dwarf2_cu **); |
9219021c | 1765 | |
f39c6ffd | 1766 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1767 | |
f39c6ffd | 1768 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1769 | |
a084a2a6 AT |
1770 | static const char *dwarf_unit_type_name (int unit_type); |
1771 | ||
f39c6ffd | 1772 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1773 | |
a121b7c1 | 1774 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1775 | |
f39c6ffd | 1776 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1777 | |
f9aca02d | 1778 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1779 | |
d97bc12b DE |
1780 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1781 | ||
1782 | static void dump_die_for_error (struct die_info *); | |
1783 | ||
1784 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1785 | struct die_info *); | |
c906108c | 1786 | |
d97bc12b | 1787 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1788 | |
51545339 | 1789 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1790 | struct dwarf2_cu *); |
c906108c | 1791 | |
ff39bb5e | 1792 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1793 | |
ff39bb5e | 1794 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1795 | |
348e048f | 1796 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1797 | const struct attribute *, |
348e048f DE |
1798 | struct dwarf2_cu **); |
1799 | ||
10b3939b | 1800 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1801 | const struct attribute *, |
f2f0e013 | 1802 | struct dwarf2_cu **); |
c906108c | 1803 | |
348e048f | 1804 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1805 | const struct attribute *, |
348e048f DE |
1806 | struct dwarf2_cu **); |
1807 | ||
ac9ec31b DE |
1808 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1809 | struct dwarf2_cu *); | |
1810 | ||
1811 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1812 | const struct attribute *, |
ac9ec31b DE |
1813 | struct dwarf2_cu *); |
1814 | ||
e5fe5e75 | 1815 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1816 | |
52dc124a | 1817 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1818 | |
63e43d3a PMR |
1819 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1820 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1821 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1822 | |
c906108c SS |
1823 | /* memory allocation interface */ |
1824 | ||
7b5a2f43 | 1825 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1826 | |
b60c80d6 | 1827 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1828 | |
43f3e411 | 1829 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1830 | |
6e5a29e1 | 1831 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1832 | |
6e5a29e1 | 1833 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1834 | |
6e5a29e1 | 1835 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1836 | |
6e5a29e1 | 1837 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1838 | |
8cf6f0b1 TT |
1839 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1840 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1841 | const struct attribute *attr); |
8cf6f0b1 | 1842 | |
ff39bb5e | 1843 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1844 | struct symbol *sym, |
f1e6e072 TT |
1845 | struct dwarf2_cu *cu, |
1846 | int is_block); | |
4c2df51b | 1847 | |
d521ce57 TT |
1848 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1849 | const gdb_byte *info_ptr, | |
1850 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1851 | |
72bf9492 DJ |
1852 | static hashval_t partial_die_hash (const void *item); |
1853 | ||
1854 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1855 | ||
ae038cb0 | 1856 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1857 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1858 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1859 | |
9816fde3 | 1860 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1861 | struct die_info *comp_unit_die, |
1862 | enum language pretend_language); | |
93311388 | 1863 | |
ed2dc618 | 1864 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1865 | |
dee91e82 | 1866 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1867 | |
f792889a DJ |
1868 | static struct type *set_die_type (struct die_info *, struct type *, |
1869 | struct dwarf2_cu *); | |
1c379e20 | 1870 | |
ed2dc618 | 1871 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1872 | |
ed2dc618 | 1873 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1874 | |
58f0c718 | 1875 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1876 | enum language); |
10b3939b | 1877 | |
95554aad TT |
1878 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1879 | enum language); | |
10b3939b | 1880 | |
f4dc4d17 DE |
1881 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1882 | enum language); | |
1883 | ||
10b3939b DJ |
1884 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1885 | struct dwarf2_per_cu_data *); | |
1886 | ||
ae038cb0 DJ |
1887 | static void dwarf2_mark (struct dwarf2_cu *); |
1888 | ||
1889 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1890 | ||
b64f50a1 | 1891 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1892 | struct dwarf2_per_cu_data *); |
673bfd45 | 1893 | |
f792889a | 1894 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1895 | |
95554aad TT |
1896 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1897 | enum language pretend_language); | |
1898 | ||
ed2dc618 | 1899 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1900 | |
9a49df9d AB |
1901 | static struct type *dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu); |
1902 | static struct type *dwarf2_per_cu_addr_sized_int_type | |
1903 | (struct dwarf2_per_cu_data *per_cu, bool unsigned_p); | |
1904 | ||
b303c6f6 AB |
1905 | /* Class, the destructor of which frees all allocated queue entries. This |
1906 | will only have work to do if an error was thrown while processing the | |
1907 | dwarf. If no error was thrown then the queue entries should have all | |
1908 | been processed, and freed, as we went along. */ | |
1909 | ||
1910 | class dwarf2_queue_guard | |
1911 | { | |
1912 | public: | |
1913 | dwarf2_queue_guard () = default; | |
1914 | ||
1915 | /* Free any entries remaining on the queue. There should only be | |
1916 | entries left if we hit an error while processing the dwarf. */ | |
1917 | ~dwarf2_queue_guard () | |
1918 | { | |
1919 | struct dwarf2_queue_item *item, *last; | |
1920 | ||
1921 | item = dwarf2_queue; | |
1922 | while (item) | |
1923 | { | |
1924 | /* Anything still marked queued is likely to be in an | |
1925 | inconsistent state, so discard it. */ | |
1926 | if (item->per_cu->queued) | |
1927 | { | |
1928 | if (item->per_cu->cu != NULL) | |
1929 | free_one_cached_comp_unit (item->per_cu); | |
1930 | item->per_cu->queued = 0; | |
1931 | } | |
1932 | ||
1933 | last = item; | |
1934 | item = item->next; | |
1935 | xfree (last); | |
1936 | } | |
1937 | ||
1938 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1939 | } | |
1940 | }; | |
1941 | ||
d721ba37 PA |
1942 | /* The return type of find_file_and_directory. Note, the enclosed |
1943 | string pointers are only valid while this object is valid. */ | |
1944 | ||
1945 | struct file_and_directory | |
1946 | { | |
1947 | /* The filename. This is never NULL. */ | |
1948 | const char *name; | |
1949 | ||
1950 | /* The compilation directory. NULL if not known. If we needed to | |
1951 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1952 | points directly to the DW_AT_comp_dir string attribute owned by | |
1953 | the obstack that owns the DIE. */ | |
1954 | const char *comp_dir; | |
1955 | ||
1956 | /* If we needed to build a new string for comp_dir, this is what | |
1957 | owns the storage. */ | |
1958 | std::string comp_dir_storage; | |
1959 | }; | |
1960 | ||
1961 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1962 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1963 | |
1964 | static char *file_full_name (int file, struct line_header *lh, | |
1965 | const char *comp_dir); | |
1966 | ||
43988095 JK |
1967 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1968 | enum class rcuh_kind { COMPILE, TYPE }; | |
1969 | ||
d521ce57 | 1970 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1971 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1972 | struct comp_unit_head *header, | |
36586728 | 1973 | struct dwarf2_section_info *section, |
d521ce57 | 1974 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1975 | rcuh_kind section_kind); |
36586728 | 1976 | |
fd820528 | 1977 | static void init_cutu_and_read_dies |
f4dc4d17 | 1978 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
58f0c718 | 1979 | int use_existing_cu, int keep, bool skip_partial, |
3019eac3 DE |
1980 | die_reader_func_ftype *die_reader_func, void *data); |
1981 | ||
dee91e82 DE |
1982 | static void init_cutu_and_read_dies_simple |
1983 | (struct dwarf2_per_cu_data *this_cu, | |
1984 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1985 | |
673bfd45 | 1986 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1987 | |
3019eac3 DE |
1988 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1989 | ||
57d63ce2 | 1990 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1991 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1992 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1993 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1994 | |
ed2dc618 SM |
1995 | static struct dwp_file *get_dwp_file |
1996 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1997 | |
3019eac3 | 1998 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1999 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2000 | |
2001 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2002 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2003 | |
89e63ee4 DE |
2004 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2005 | ||
263db9a1 TT |
2006 | /* A unique pointer to a dwo_file. */ |
2007 | ||
51ac9db5 | 2008 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 2009 | |
ed2dc618 | 2010 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2011 | |
1b80a9fa | 2012 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2013 | |
2014 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2015 | \f |
2016 | /* Various complaints about symbol reading that don't abort the process. */ | |
2017 | ||
2018 | static void | |
2019 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2020 | { | |
b98664d3 | 2021 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2022 | } |
2023 | ||
2024 | static void | |
2025 | dwarf2_debug_line_missing_file_complaint (void) | |
2026 | { | |
b98664d3 | 2027 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2028 | } |
2029 | ||
2030 | static void | |
2031 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2032 | { | |
b98664d3 | 2033 | complaint (_(".debug_line section has line " |
4390d890 DE |
2034 | "program sequence without an end")); |
2035 | } | |
2036 | ||
2037 | static void | |
2038 | dwarf2_complex_location_expr_complaint (void) | |
2039 | { | |
b98664d3 | 2040 | complaint (_("location expression too complex")); |
4390d890 DE |
2041 | } |
2042 | ||
2043 | static void | |
2044 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2045 | int arg3) | |
2046 | { | |
b98664d3 | 2047 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2048 | arg1, arg2, arg3); |
2049 | } | |
2050 | ||
2051 | static void | |
2052 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2053 | { | |
b98664d3 | 2054 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2055 | " [in module %s]"), |
a32a8923 DE |
2056 | get_section_name (section), |
2057 | get_section_file_name (section)); | |
4390d890 | 2058 | } |
1b80a9fa | 2059 | |
4390d890 DE |
2060 | static void |
2061 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2062 | { | |
b98664d3 | 2063 | complaint (_("macro debug info contains a " |
4390d890 DE |
2064 | "malformed macro definition:\n`%s'"), |
2065 | arg1); | |
2066 | } | |
2067 | ||
2068 | static void | |
2069 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2070 | { | |
b98664d3 | 2071 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2072 | arg1, arg2); |
2073 | } | |
527f3840 JK |
2074 | |
2075 | /* Hash function for line_header_hash. */ | |
2076 | ||
2077 | static hashval_t | |
2078 | line_header_hash (const struct line_header *ofs) | |
2079 | { | |
9c541725 | 2080 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2081 | } |
2082 | ||
2083 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2084 | ||
2085 | static hashval_t | |
2086 | line_header_hash_voidp (const void *item) | |
2087 | { | |
9a3c8263 | 2088 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2089 | |
2090 | return line_header_hash (ofs); | |
2091 | } | |
2092 | ||
2093 | /* Equality function for line_header_hash. */ | |
2094 | ||
2095 | static int | |
2096 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2097 | { | |
9a3c8263 SM |
2098 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2099 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2100 | |
9c541725 | 2101 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2102 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2103 | } | |
2104 | ||
4390d890 | 2105 | \f |
9291a0cd | 2106 | |
31aa7e4e JB |
2107 | /* Read the given attribute value as an address, taking the attribute's |
2108 | form into account. */ | |
2109 | ||
2110 | static CORE_ADDR | |
2111 | attr_value_as_address (struct attribute *attr) | |
2112 | { | |
2113 | CORE_ADDR addr; | |
2114 | ||
336d760d AT |
2115 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_addrx |
2116 | && attr->form != DW_FORM_GNU_addr_index) | |
31aa7e4e JB |
2117 | { |
2118 | /* Aside from a few clearly defined exceptions, attributes that | |
2119 | contain an address must always be in DW_FORM_addr form. | |
2120 | Unfortunately, some compilers happen to be violating this | |
2121 | requirement by encoding addresses using other forms, such | |
2122 | as DW_FORM_data4 for example. For those broken compilers, | |
2123 | we try to do our best, without any guarantee of success, | |
2124 | to interpret the address correctly. It would also be nice | |
2125 | to generate a complaint, but that would require us to maintain | |
2126 | a list of legitimate cases where a non-address form is allowed, | |
2127 | as well as update callers to pass in at least the CU's DWARF | |
2128 | version. This is more overhead than what we're willing to | |
2129 | expand for a pretty rare case. */ | |
2130 | addr = DW_UNSND (attr); | |
2131 | } | |
2132 | else | |
2133 | addr = DW_ADDR (attr); | |
2134 | ||
2135 | return addr; | |
2136 | } | |
2137 | ||
330cdd98 PA |
2138 | /* See declaration. */ |
2139 | ||
2140 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2141 | const dwarf2_debug_sections *names) | |
2142 | : objfile (objfile_) | |
2143 | { | |
2144 | if (names == NULL) | |
2145 | names = &dwarf2_elf_names; | |
2146 | ||
2147 | bfd *obfd = objfile->obfd; | |
2148 | ||
2149 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2150 | locate_sections (obfd, sec, *names); | |
2151 | } | |
2152 | ||
2153 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2154 | { | |
2155 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2156 | free_cached_comp_units (); | |
2157 | ||
2158 | if (quick_file_names_table) | |
2159 | htab_delete (quick_file_names_table); | |
2160 | ||
2161 | if (line_header_hash) | |
2162 | htab_delete (line_header_hash); | |
2163 | ||
b76e467d SM |
2164 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2165 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2166 | |
b2bdb8cf SM |
2167 | for (signatured_type *sig_type : all_type_units) |
2168 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 | 2169 | |
330cdd98 PA |
2170 | /* Everything else should be on the objfile obstack. */ |
2171 | } | |
2172 | ||
2173 | /* See declaration. */ | |
2174 | ||
2175 | void | |
2176 | dwarf2_per_objfile::free_cached_comp_units () | |
2177 | { | |
2178 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2179 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2180 | while (per_cu != NULL) | |
2181 | { | |
2182 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2183 | ||
fcd3b13d | 2184 | delete per_cu->cu; |
330cdd98 PA |
2185 | *last_chain = next_cu; |
2186 | per_cu = next_cu; | |
2187 | } | |
2188 | } | |
2189 | ||
11ed8cad TT |
2190 | /* A helper class that calls free_cached_comp_units on |
2191 | destruction. */ | |
2192 | ||
2193 | class free_cached_comp_units | |
2194 | { | |
2195 | public: | |
2196 | ||
2197 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2198 | : m_per_objfile (per_objfile) | |
2199 | { | |
2200 | } | |
2201 | ||
2202 | ~free_cached_comp_units () | |
2203 | { | |
2204 | m_per_objfile->free_cached_comp_units (); | |
2205 | } | |
2206 | ||
2207 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2208 | ||
2209 | private: | |
2210 | ||
2211 | dwarf2_per_objfile *m_per_objfile; | |
2212 | }; | |
2213 | ||
c906108c | 2214 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2215 | information and return true if we have enough to do something. |
2216 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2217 | ELF names are used. */ | |
c906108c SS |
2218 | |
2219 | int | |
251d32d9 TG |
2220 | dwarf2_has_info (struct objfile *objfile, |
2221 | const struct dwarf2_debug_sections *names) | |
c906108c | 2222 | { |
97cbe998 SDJ |
2223 | if (objfile->flags & OBJF_READNEVER) |
2224 | return 0; | |
2225 | ||
ed2dc618 SM |
2226 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2227 | = get_dwarf2_per_objfile (objfile); | |
2228 | ||
2229 | if (dwarf2_per_objfile == NULL) | |
5bfd760d TT |
2230 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
2231 | names); | |
2232 | ||
73869dc2 | 2233 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2234 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2235 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2236 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2237 | } |
2238 | ||
2239 | /* Return the containing section of virtual section SECTION. */ | |
2240 | ||
2241 | static struct dwarf2_section_info * | |
2242 | get_containing_section (const struct dwarf2_section_info *section) | |
2243 | { | |
2244 | gdb_assert (section->is_virtual); | |
2245 | return section->s.containing_section; | |
c906108c SS |
2246 | } |
2247 | ||
a32a8923 DE |
2248 | /* Return the bfd owner of SECTION. */ |
2249 | ||
2250 | static struct bfd * | |
2251 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2252 | { | |
73869dc2 DE |
2253 | if (section->is_virtual) |
2254 | { | |
2255 | section = get_containing_section (section); | |
2256 | gdb_assert (!section->is_virtual); | |
2257 | } | |
049412e3 | 2258 | return section->s.section->owner; |
a32a8923 DE |
2259 | } |
2260 | ||
2261 | /* Return the bfd section of SECTION. | |
2262 | Returns NULL if the section is not present. */ | |
2263 | ||
2264 | static asection * | |
2265 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2266 | { | |
73869dc2 DE |
2267 | if (section->is_virtual) |
2268 | { | |
2269 | section = get_containing_section (section); | |
2270 | gdb_assert (!section->is_virtual); | |
2271 | } | |
049412e3 | 2272 | return section->s.section; |
a32a8923 DE |
2273 | } |
2274 | ||
2275 | /* Return the name of SECTION. */ | |
2276 | ||
2277 | static const char * | |
2278 | get_section_name (const struct dwarf2_section_info *section) | |
2279 | { | |
2280 | asection *sectp = get_section_bfd_section (section); | |
2281 | ||
2282 | gdb_assert (sectp != NULL); | |
fd361982 | 2283 | return bfd_section_name (sectp); |
a32a8923 DE |
2284 | } |
2285 | ||
2286 | /* Return the name of the file SECTION is in. */ | |
2287 | ||
2288 | static const char * | |
2289 | get_section_file_name (const struct dwarf2_section_info *section) | |
2290 | { | |
2291 | bfd *abfd = get_section_bfd_owner (section); | |
2292 | ||
2293 | return bfd_get_filename (abfd); | |
2294 | } | |
2295 | ||
2296 | /* Return the id of SECTION. | |
2297 | Returns 0 if SECTION doesn't exist. */ | |
2298 | ||
2299 | static int | |
2300 | get_section_id (const struct dwarf2_section_info *section) | |
2301 | { | |
2302 | asection *sectp = get_section_bfd_section (section); | |
2303 | ||
2304 | if (sectp == NULL) | |
2305 | return 0; | |
2306 | return sectp->id; | |
2307 | } | |
2308 | ||
2309 | /* Return the flags of SECTION. | |
73869dc2 | 2310 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2311 | |
2312 | static int | |
2313 | get_section_flags (const struct dwarf2_section_info *section) | |
2314 | { | |
2315 | asection *sectp = get_section_bfd_section (section); | |
2316 | ||
2317 | gdb_assert (sectp != NULL); | |
fd361982 | 2318 | return bfd_section_flags (sectp); |
a32a8923 DE |
2319 | } |
2320 | ||
251d32d9 TG |
2321 | /* When loading sections, we look either for uncompressed section or for |
2322 | compressed section names. */ | |
233a11ab CS |
2323 | |
2324 | static int | |
251d32d9 TG |
2325 | section_is_p (const char *section_name, |
2326 | const struct dwarf2_section_names *names) | |
233a11ab | 2327 | { |
251d32d9 TG |
2328 | if (names->normal != NULL |
2329 | && strcmp (section_name, names->normal) == 0) | |
2330 | return 1; | |
2331 | if (names->compressed != NULL | |
2332 | && strcmp (section_name, names->compressed) == 0) | |
2333 | return 1; | |
2334 | return 0; | |
233a11ab CS |
2335 | } |
2336 | ||
330cdd98 | 2337 | /* See declaration. */ |
c906108c | 2338 | |
330cdd98 PA |
2339 | void |
2340 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2341 | const dwarf2_debug_sections &names) | |
c906108c | 2342 | { |
fd361982 | 2343 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2344 | |
dc7650b8 JK |
2345 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2346 | { | |
2347 | } | |
330cdd98 | 2348 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2349 | { |
330cdd98 | 2350 | this->info.s.section = sectp; |
fd361982 | 2351 | this->info.size = bfd_section_size (sectp); |
c906108c | 2352 | } |
330cdd98 | 2353 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2354 | { |
330cdd98 | 2355 | this->abbrev.s.section = sectp; |
fd361982 | 2356 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2357 | } |
330cdd98 | 2358 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2359 | { |
330cdd98 | 2360 | this->line.s.section = sectp; |
fd361982 | 2361 | this->line.size = bfd_section_size (sectp); |
c906108c | 2362 | } |
330cdd98 | 2363 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2364 | { |
330cdd98 | 2365 | this->loc.s.section = sectp; |
fd361982 | 2366 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2367 | } |
330cdd98 | 2368 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2369 | { |
330cdd98 | 2370 | this->loclists.s.section = sectp; |
fd361982 | 2371 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2372 | } |
330cdd98 | 2373 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2374 | { |
330cdd98 | 2375 | this->macinfo.s.section = sectp; |
fd361982 | 2376 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2377 | } |
330cdd98 | 2378 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2379 | { |
330cdd98 | 2380 | this->macro.s.section = sectp; |
fd361982 | 2381 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2382 | } |
330cdd98 | 2383 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2384 | { |
330cdd98 | 2385 | this->str.s.section = sectp; |
fd361982 | 2386 | this->str.size = bfd_section_size (sectp); |
c906108c | 2387 | } |
330cdd98 | 2388 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2389 | { |
330cdd98 | 2390 | this->line_str.s.section = sectp; |
fd361982 | 2391 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2392 | } |
330cdd98 | 2393 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2394 | { |
330cdd98 | 2395 | this->addr.s.section = sectp; |
fd361982 | 2396 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2397 | } |
330cdd98 | 2398 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2399 | { |
330cdd98 | 2400 | this->frame.s.section = sectp; |
fd361982 | 2401 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2402 | } |
330cdd98 | 2403 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2404 | { |
330cdd98 | 2405 | this->eh_frame.s.section = sectp; |
fd361982 | 2406 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2407 | } |
330cdd98 | 2408 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2409 | { |
330cdd98 | 2410 | this->ranges.s.section = sectp; |
fd361982 | 2411 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2412 | } |
330cdd98 | 2413 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2414 | { |
330cdd98 | 2415 | this->rnglists.s.section = sectp; |
fd361982 | 2416 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2417 | } |
330cdd98 | 2418 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2419 | { |
8b70b953 TT |
2420 | struct dwarf2_section_info type_section; |
2421 | ||
2422 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2423 | type_section.s.section = sectp; |
fd361982 | 2424 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2425 | |
fd5866f6 | 2426 | this->types.push_back (type_section); |
348e048f | 2427 | } |
330cdd98 | 2428 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2429 | { |
330cdd98 | 2430 | this->gdb_index.s.section = sectp; |
fd361982 | 2431 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2432 | } |
927aa2e7 JK |
2433 | else if (section_is_p (sectp->name, &names.debug_names)) |
2434 | { | |
2435 | this->debug_names.s.section = sectp; | |
fd361982 | 2436 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2437 | } |
2438 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2439 | { | |
2440 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2441 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2442 | } |
dce234bc | 2443 | |
fd361982 AM |
2444 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2445 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2446 | this->has_section_at_zero = true; |
c906108c SS |
2447 | } |
2448 | ||
fceca515 DE |
2449 | /* A helper function that decides whether a section is empty, |
2450 | or not present. */ | |
9e0ac564 TT |
2451 | |
2452 | static int | |
19ac8c2e | 2453 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2454 | { |
73869dc2 DE |
2455 | if (section->is_virtual) |
2456 | return section->size == 0; | |
049412e3 | 2457 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2458 | } |
2459 | ||
cd4fb1b2 | 2460 | /* See dwarf2read.h. */ |
c906108c | 2461 | |
cd4fb1b2 SM |
2462 | void |
2463 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2464 | { |
a32a8923 | 2465 | asection *sectp; |
3019eac3 | 2466 | bfd *abfd; |
dce234bc | 2467 | gdb_byte *buf, *retbuf; |
c906108c | 2468 | |
be391dca TT |
2469 | if (info->readin) |
2470 | return; | |
dce234bc | 2471 | info->buffer = NULL; |
dc4ccb6f | 2472 | info->readin = true; |
188dd5d6 | 2473 | |
9e0ac564 | 2474 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2475 | return; |
c906108c | 2476 | |
a32a8923 | 2477 | sectp = get_section_bfd_section (info); |
3019eac3 | 2478 | |
73869dc2 DE |
2479 | /* If this is a virtual section we need to read in the real one first. */ |
2480 | if (info->is_virtual) | |
2481 | { | |
2482 | struct dwarf2_section_info *containing_section = | |
2483 | get_containing_section (info); | |
2484 | ||
2485 | gdb_assert (sectp != NULL); | |
2486 | if ((sectp->flags & SEC_RELOC) != 0) | |
2487 | { | |
2488 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2489 | " supported in section %s [in module %s]"), | |
2490 | get_section_name (info), get_section_file_name (info)); | |
2491 | } | |
2492 | dwarf2_read_section (objfile, containing_section); | |
2493 | /* Other code should have already caught virtual sections that don't | |
2494 | fit. */ | |
2495 | gdb_assert (info->virtual_offset + info->size | |
2496 | <= containing_section->size); | |
2497 | /* If the real section is empty or there was a problem reading the | |
2498 | section we shouldn't get here. */ | |
2499 | gdb_assert (containing_section->buffer != NULL); | |
2500 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2501 | return; | |
2502 | } | |
2503 | ||
4bf44c1c TT |
2504 | /* If the section has relocations, we must read it ourselves. |
2505 | Otherwise we attach it to the BFD. */ | |
2506 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2507 | { |
d521ce57 | 2508 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2509 | return; |
dce234bc | 2510 | } |
dce234bc | 2511 | |
224c3ddb | 2512 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2513 | info->buffer = buf; |
dce234bc PP |
2514 | |
2515 | /* When debugging .o files, we may need to apply relocations; see | |
2516 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2517 | We never compress sections in .o files, so we only need to | |
2518 | try this when the section is not compressed. */ | |
ac8035ab | 2519 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2520 | if (retbuf != NULL) |
2521 | { | |
2522 | info->buffer = retbuf; | |
2523 | return; | |
2524 | } | |
2525 | ||
a32a8923 DE |
2526 | abfd = get_section_bfd_owner (info); |
2527 | gdb_assert (abfd != NULL); | |
2528 | ||
dce234bc PP |
2529 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2530 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2531 | { |
2532 | error (_("Dwarf Error: Can't read DWARF data" | |
2533 | " in section %s [in module %s]"), | |
fd361982 | 2534 | bfd_section_name (sectp), bfd_get_filename (abfd)); |
19ac8c2e | 2535 | } |
dce234bc PP |
2536 | } |
2537 | ||
9e0ac564 TT |
2538 | /* A helper function that returns the size of a section in a safe way. |
2539 | If you are positive that the section has been read before using the | |
2540 | size, then it is safe to refer to the dwarf2_section_info object's | |
2541 | "size" field directly. In other cases, you must call this | |
2542 | function, because for compressed sections the size field is not set | |
2543 | correctly until the section has been read. */ | |
2544 | ||
2545 | static bfd_size_type | |
2546 | dwarf2_section_size (struct objfile *objfile, | |
2547 | struct dwarf2_section_info *info) | |
2548 | { | |
2549 | if (!info->readin) | |
2550 | dwarf2_read_section (objfile, info); | |
2551 | return info->size; | |
2552 | } | |
2553 | ||
dce234bc | 2554 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2555 | SECTION_NAME. */ |
af34e669 | 2556 | |
dce234bc | 2557 | void |
3017a003 TG |
2558 | dwarf2_get_section_info (struct objfile *objfile, |
2559 | enum dwarf2_section_enum sect, | |
d521ce57 | 2560 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2561 | bfd_size_type *sizep) |
2562 | { | |
5bfd760d | 2563 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2564 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2565 | |
2566 | /* We may see an objfile without any DWARF, in which case we just | |
2567 | return nothing. */ | |
2568 | if (data == NULL) | |
2569 | { | |
2570 | *sectp = NULL; | |
2571 | *bufp = NULL; | |
2572 | *sizep = 0; | |
2573 | return; | |
2574 | } | |
3017a003 TG |
2575 | switch (sect) |
2576 | { | |
2577 | case DWARF2_DEBUG_FRAME: | |
2578 | info = &data->frame; | |
2579 | break; | |
2580 | case DWARF2_EH_FRAME: | |
2581 | info = &data->eh_frame; | |
2582 | break; | |
2583 | default: | |
2584 | gdb_assert_not_reached ("unexpected section"); | |
2585 | } | |
dce234bc | 2586 | |
9e0ac564 | 2587 | dwarf2_read_section (objfile, info); |
dce234bc | 2588 | |
a32a8923 | 2589 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2590 | *bufp = info->buffer; |
2591 | *sizep = info->size; | |
2592 | } | |
2593 | ||
36586728 TT |
2594 | /* A helper function to find the sections for a .dwz file. */ |
2595 | ||
2596 | static void | |
2597 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2598 | { | |
9a3c8263 | 2599 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2600 | |
2601 | /* Note that we only support the standard ELF names, because .dwz | |
2602 | is ELF-only (at the time of writing). */ | |
2603 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2604 | { | |
049412e3 | 2605 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2606 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2607 | } |
2608 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2609 | { | |
049412e3 | 2610 | dwz_file->info.s.section = sectp; |
fd361982 | 2611 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2612 | } |
2613 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2614 | { | |
049412e3 | 2615 | dwz_file->str.s.section = sectp; |
fd361982 | 2616 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2617 | } |
2618 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2619 | { | |
049412e3 | 2620 | dwz_file->line.s.section = sectp; |
fd361982 | 2621 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2622 | } |
2623 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2624 | { | |
049412e3 | 2625 | dwz_file->macro.s.section = sectp; |
fd361982 | 2626 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2627 | } |
2ec9a5e0 TT |
2628 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2629 | { | |
049412e3 | 2630 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2631 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2632 | } |
927aa2e7 JK |
2633 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2634 | { | |
2635 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2636 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2637 | } |
36586728 TT |
2638 | } |
2639 | ||
c4973306 | 2640 | /* See dwarf2read.h. */ |
36586728 | 2641 | |
c4973306 | 2642 | struct dwz_file * |
ed2dc618 | 2643 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2644 | { |
36586728 | 2645 | const char *filename; |
acd13123 | 2646 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2647 | size_t buildid_len; |
2648 | bfd_byte *buildid; | |
36586728 TT |
2649 | |
2650 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2651 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2652 | |
4db1a1dc | 2653 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2654 | gdb::unique_xmalloc_ptr<char> data |
2655 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2656 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2657 | if (data == NULL) |
2658 | { | |
2659 | if (bfd_get_error () == bfd_error_no_error) | |
2660 | return NULL; | |
2661 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2662 | bfd_errmsg (bfd_get_error ())); | |
2663 | } | |
791afaa2 TT |
2664 | |
2665 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2666 | |
acd13123 TT |
2667 | buildid_len = (size_t) buildid_len_arg; |
2668 | ||
791afaa2 | 2669 | filename = data.get (); |
d721ba37 PA |
2670 | |
2671 | std::string abs_storage; | |
36586728 TT |
2672 | if (!IS_ABSOLUTE_PATH (filename)) |
2673 | { | |
14278e1f TT |
2674 | gdb::unique_xmalloc_ptr<char> abs |
2675 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2676 | |
14278e1f | 2677 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2678 | filename = abs_storage.c_str (); |
36586728 TT |
2679 | } |
2680 | ||
dc294be5 TT |
2681 | /* First try the file name given in the section. If that doesn't |
2682 | work, try to use the build-id instead. */ | |
192b62ce | 2683 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2684 | if (dwz_bfd != NULL) |
36586728 | 2685 | { |
192b62ce | 2686 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2687 | dwz_bfd.reset (nullptr); |
36586728 TT |
2688 | } |
2689 | ||
dc294be5 TT |
2690 | if (dwz_bfd == NULL) |
2691 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2692 | ||
2693 | if (dwz_bfd == NULL) | |
2694 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2695 | objfile_name (dwarf2_per_objfile->objfile)); | |
2696 | ||
7ff8cb8c TT |
2697 | std::unique_ptr<struct dwz_file> result |
2698 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2699 | |
7ff8cb8c TT |
2700 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2701 | result.get ()); | |
36586728 | 2702 | |
7ff8cb8c TT |
2703 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2704 | result->dwz_bfd.get ()); | |
2705 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2706 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2707 | } |
9291a0cd | 2708 | \f |
7b9f3c50 DE |
2709 | /* DWARF quick_symbols_functions support. */ |
2710 | ||
2711 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2712 | unique line tables, so we maintain a separate table of all .debug_line | |
2713 | derived entries to support the sharing. | |
2714 | All the quick functions need is the list of file names. We discard the | |
2715 | line_header when we're done and don't need to record it here. */ | |
2716 | struct quick_file_names | |
2717 | { | |
094b34ac DE |
2718 | /* The data used to construct the hash key. */ |
2719 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2720 | |
2721 | /* The number of entries in file_names, real_names. */ | |
2722 | unsigned int num_file_names; | |
2723 | ||
2724 | /* The file names from the line table, after being run through | |
2725 | file_full_name. */ | |
2726 | const char **file_names; | |
2727 | ||
2728 | /* The file names from the line table after being run through | |
2729 | gdb_realpath. These are computed lazily. */ | |
2730 | const char **real_names; | |
2731 | }; | |
2732 | ||
2733 | /* When using the index (and thus not using psymtabs), each CU has an | |
2734 | object of this type. This is used to hold information needed by | |
2735 | the various "quick" methods. */ | |
2736 | struct dwarf2_per_cu_quick_data | |
2737 | { | |
2738 | /* The file table. This can be NULL if there was no file table | |
2739 | or it's currently not read in. | |
2740 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2741 | struct quick_file_names *file_names; | |
2742 | ||
2743 | /* The corresponding symbol table. This is NULL if symbols for this | |
2744 | CU have not yet been read. */ | |
43f3e411 | 2745 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2746 | |
2747 | /* A temporary mark bit used when iterating over all CUs in | |
2748 | expand_symtabs_matching. */ | |
2749 | unsigned int mark : 1; | |
2750 | ||
2751 | /* True if we've tried to read the file table and found there isn't one. | |
2752 | There will be no point in trying to read it again next time. */ | |
2753 | unsigned int no_file_data : 1; | |
2754 | }; | |
2755 | ||
094b34ac DE |
2756 | /* Utility hash function for a stmt_list_hash. */ |
2757 | ||
2758 | static hashval_t | |
2759 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2760 | { | |
2761 | hashval_t v = 0; | |
2762 | ||
2763 | if (stmt_list_hash->dwo_unit != NULL) | |
2764 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2765 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2766 | return v; |
2767 | } | |
2768 | ||
2769 | /* Utility equality function for a stmt_list_hash. */ | |
2770 | ||
2771 | static int | |
2772 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2773 | const struct stmt_list_hash *rhs) | |
2774 | { | |
2775 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2776 | return 0; | |
2777 | if (lhs->dwo_unit != NULL | |
2778 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2779 | return 0; | |
2780 | ||
9c541725 | 2781 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2782 | } |
2783 | ||
7b9f3c50 DE |
2784 | /* Hash function for a quick_file_names. */ |
2785 | ||
2786 | static hashval_t | |
2787 | hash_file_name_entry (const void *e) | |
2788 | { | |
9a3c8263 SM |
2789 | const struct quick_file_names *file_data |
2790 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2791 | |
094b34ac | 2792 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2793 | } |
2794 | ||
2795 | /* Equality function for a quick_file_names. */ | |
2796 | ||
2797 | static int | |
2798 | eq_file_name_entry (const void *a, const void *b) | |
2799 | { | |
9a3c8263 SM |
2800 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2801 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2802 | |
094b34ac | 2803 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2804 | } |
2805 | ||
2806 | /* Delete function for a quick_file_names. */ | |
2807 | ||
2808 | static void | |
2809 | delete_file_name_entry (void *e) | |
2810 | { | |
9a3c8263 | 2811 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2812 | int i; |
2813 | ||
2814 | for (i = 0; i < file_data->num_file_names; ++i) | |
2815 | { | |
2816 | xfree ((void*) file_data->file_names[i]); | |
2817 | if (file_data->real_names) | |
2818 | xfree ((void*) file_data->real_names[i]); | |
2819 | } | |
2820 | ||
2821 | /* The space for the struct itself lives on objfile_obstack, | |
2822 | so we don't free it here. */ | |
2823 | } | |
2824 | ||
2825 | /* Create a quick_file_names hash table. */ | |
2826 | ||
2827 | static htab_t | |
2828 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2829 | { | |
2830 | return htab_create_alloc (nr_initial_entries, | |
2831 | hash_file_name_entry, eq_file_name_entry, | |
2832 | delete_file_name_entry, xcalloc, xfree); | |
2833 | } | |
9291a0cd | 2834 | |
918dd910 JK |
2835 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2836 | have to be created afterwards. You should call age_cached_comp_units after | |
2837 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2838 | ||
2839 | static void | |
58f0c718 | 2840 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2841 | { |
3019eac3 | 2842 | if (per_cu->is_debug_types) |
e5fe5e75 | 2843 | load_full_type_unit (per_cu); |
918dd910 | 2844 | else |
58f0c718 | 2845 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2846 | |
cc12ce38 DE |
2847 | if (per_cu->cu == NULL) |
2848 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2849 | |
2850 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2851 | } |
2852 | ||
a0f42c21 | 2853 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2854 | |
9291a0cd | 2855 | static void |
58f0c718 | 2856 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2857 | { |
ed2dc618 | 2858 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2859 | |
f4dc4d17 DE |
2860 | /* Skip type_unit_groups, reading the type units they contain |
2861 | is handled elsewhere. */ | |
2862 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2863 | return; | |
2864 | ||
b303c6f6 AB |
2865 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2866 | the queue. After this point we're guaranteed to leave this function | |
2867 | with the dwarf queue empty. */ | |
2868 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2869 | |
95554aad | 2870 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2871 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2872 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2873 | { | |
2874 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2875 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2876 | |
2877 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2878 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2879 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2880 | if (!per_cu->is_debug_types | |
cc12ce38 | 2881 | && per_cu->cu != NULL |
89e63ee4 DE |
2882 | && per_cu->cu->dwo_unit != NULL |
2883 | && dwarf2_per_objfile->index_table != NULL | |
2884 | && dwarf2_per_objfile->index_table->version <= 7 | |
2885 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2886 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2887 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2888 | } |
9291a0cd | 2889 | |
ed2dc618 | 2890 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2891 | |
2892 | /* Age the cache, releasing compilation units that have not | |
2893 | been used recently. */ | |
ed2dc618 | 2894 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2895 | } |
2896 | ||
2897 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2898 | the objfile from which this CU came. Returns the resulting symbol | |
2899 | table. */ | |
2fdf6df6 | 2900 | |
43f3e411 | 2901 | static struct compunit_symtab * |
58f0c718 | 2902 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2903 | { |
ed2dc618 SM |
2904 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2905 | ||
95554aad | 2906 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2907 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2908 | { |
11ed8cad | 2909 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2910 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2911 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2912 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2913 | } |
f194fefb | 2914 | |
43f3e411 | 2915 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2916 | } |
2917 | ||
ff4c9fec | 2918 | /* See declaration. */ |
f4dc4d17 | 2919 | |
ff4c9fec SM |
2920 | dwarf2_per_cu_data * |
2921 | dwarf2_per_objfile::get_cutu (int index) | |
2922 | { | |
b76e467d | 2923 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2924 | { |
b76e467d | 2925 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2926 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2927 | return &this->all_type_units[index]->per_cu; |
2928 | } | |
f4dc4d17 | 2929 | |
ff4c9fec SM |
2930 | return this->all_comp_units[index]; |
2931 | } | |
f4dc4d17 | 2932 | |
ff4c9fec | 2933 | /* See declaration. */ |
2fdf6df6 | 2934 | |
ff4c9fec SM |
2935 | dwarf2_per_cu_data * |
2936 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2937 | { |
b76e467d | 2938 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2939 | |
ff4c9fec | 2940 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2941 | } |
2942 | ||
ff4c9fec | 2943 | /* See declaration. */ |
f4dc4d17 | 2944 | |
ff4c9fec SM |
2945 | signatured_type * |
2946 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2947 | { |
b2bdb8cf | 2948 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2949 | |
ff4c9fec | 2950 | return this->all_type_units[index]; |
1fd400ff TT |
2951 | } |
2952 | ||
4b514bc8 JK |
2953 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2954 | objfile_obstack, and constructed with the specified field | |
2955 | values. */ | |
2956 | ||
2957 | static dwarf2_per_cu_data * | |
ed2dc618 | 2958 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2959 | struct dwarf2_section_info *section, |
2960 | int is_dwz, | |
2961 | sect_offset sect_off, ULONGEST length) | |
2962 | { | |
ed2dc618 | 2963 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2964 | dwarf2_per_cu_data *the_cu |
2965 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2966 | struct dwarf2_per_cu_data); | |
2967 | the_cu->sect_off = sect_off; | |
2968 | the_cu->length = length; | |
e3b94546 | 2969 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2970 | the_cu->section = section; |
2971 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2972 | struct dwarf2_per_cu_quick_data); | |
2973 | the_cu->is_dwz = is_dwz; | |
2974 | return the_cu; | |
2975 | } | |
2976 | ||
2ec9a5e0 TT |
2977 | /* A helper for create_cus_from_index that handles a given list of |
2978 | CUs. */ | |
2fdf6df6 | 2979 | |
74a0d9f6 | 2980 | static void |
12359b5e | 2981 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2982 | const gdb_byte *cu_list, offset_type n_elements, |
2983 | struct dwarf2_section_info *section, | |
b76e467d | 2984 | int is_dwz) |
9291a0cd | 2985 | { |
12359b5e | 2986 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2987 | { |
74a0d9f6 | 2988 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2989 | |
2990 | sect_offset sect_off | |
2991 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2992 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2993 | cu_list += 2 * 8; |
2994 | ||
b76e467d | 2995 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2996 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2997 | sect_off, length); | |
b76e467d | 2998 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2999 | } |
9291a0cd TT |
3000 | } |
3001 | ||
2ec9a5e0 | 3002 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3003 | the CU objects for this objfile. */ |
2ec9a5e0 | 3004 | |
74a0d9f6 | 3005 | static void |
12359b5e | 3006 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3007 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3008 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3009 | { | |
b76e467d SM |
3010 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3011 | dwarf2_per_objfile->all_comp_units.reserve | |
3012 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3013 | |
12359b5e | 3014 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3015 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3016 | |
3017 | if (dwz_elements == 0) | |
74a0d9f6 | 3018 | return; |
2ec9a5e0 | 3019 | |
12359b5e SM |
3020 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3021 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3022 | &dwz->info, 1); |
2ec9a5e0 TT |
3023 | } |
3024 | ||
1fd400ff | 3025 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3026 | |
74a0d9f6 | 3027 | static void |
12359b5e SM |
3028 | create_signatured_type_table_from_index |
3029 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3030 | struct dwarf2_section_info *section, | |
3031 | const gdb_byte *bytes, | |
3032 | offset_type elements) | |
1fd400ff | 3033 | { |
12359b5e | 3034 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3035 | |
b2bdb8cf SM |
3036 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3037 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3038 | |
12359b5e | 3039 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3040 | |
12359b5e | 3041 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3042 | { |
52dc124a | 3043 | struct signatured_type *sig_type; |
9c541725 | 3044 | ULONGEST signature; |
1fd400ff | 3045 | void **slot; |
9c541725 | 3046 | cu_offset type_offset_in_tu; |
1fd400ff | 3047 | |
74a0d9f6 | 3048 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3049 | sect_offset sect_off |
3050 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3051 | type_offset_in_tu | |
3052 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3053 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3054 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3055 | bytes += 3 * 8; | |
3056 | ||
52dc124a | 3057 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3058 | struct signatured_type); |
52dc124a | 3059 | sig_type->signature = signature; |
9c541725 | 3060 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3061 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3062 | sig_type->per_cu.section = section; |
9c541725 | 3063 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3064 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3065 | sig_type->per_cu.v.quick |
1fd400ff TT |
3066 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3067 | struct dwarf2_per_cu_quick_data); | |
3068 | ||
52dc124a DE |
3069 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3070 | *slot = sig_type; | |
1fd400ff | 3071 | |
b2bdb8cf | 3072 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3073 | } |
3074 | ||
673bfd45 | 3075 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3076 | } |
3077 | ||
927aa2e7 JK |
3078 | /* Create the signatured type hash table from .debug_names. */ |
3079 | ||
3080 | static void | |
3081 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3082 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3083 | const mapped_debug_names &map, |
3084 | struct dwarf2_section_info *section, | |
3085 | struct dwarf2_section_info *abbrev_section) | |
3086 | { | |
ed2dc618 SM |
3087 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3088 | ||
927aa2e7 JK |
3089 | dwarf2_read_section (objfile, section); |
3090 | dwarf2_read_section (objfile, abbrev_section); | |
3091 | ||
b2bdb8cf SM |
3092 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3093 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3094 | |
3095 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3096 | ||
3097 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3098 | { | |
3099 | struct signatured_type *sig_type; | |
927aa2e7 | 3100 | void **slot; |
927aa2e7 JK |
3101 | |
3102 | sect_offset sect_off | |
3103 | = (sect_offset) (extract_unsigned_integer | |
3104 | (map.tu_table_reordered + i * map.offset_size, | |
3105 | map.offset_size, | |
3106 | map.dwarf5_byte_order)); | |
3107 | ||
3108 | comp_unit_head cu_header; | |
ed2dc618 SM |
3109 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3110 | abbrev_section, | |
927aa2e7 JK |
3111 | section->buffer + to_underlying (sect_off), |
3112 | rcuh_kind::TYPE); | |
3113 | ||
3114 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3115 | struct signatured_type); | |
3116 | sig_type->signature = cu_header.signature; | |
3117 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3118 | sig_type->per_cu.is_debug_types = 1; | |
3119 | sig_type->per_cu.section = section; | |
3120 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3121 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3122 | sig_type->per_cu.v.quick |
3123 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3124 | struct dwarf2_per_cu_quick_data); | |
3125 | ||
3126 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3127 | *slot = sig_type; | |
3128 | ||
b2bdb8cf | 3129 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3130 | } |
3131 | ||
3132 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3133 | } | |
3134 | ||
9291a0cd TT |
3135 | /* Read the address map data from the mapped index, and use it to |
3136 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3137 | |
9291a0cd | 3138 | static void |
ed2dc618 SM |
3139 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3140 | struct mapped_index *index) | |
9291a0cd | 3141 | { |
ed2dc618 | 3142 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3143 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3144 | const gdb_byte *iter, *end; |
9291a0cd | 3145 | struct addrmap *mutable_map; |
9291a0cd TT |
3146 | CORE_ADDR baseaddr; |
3147 | ||
8268c778 PA |
3148 | auto_obstack temp_obstack; |
3149 | ||
9291a0cd TT |
3150 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3151 | ||
f00a2de2 PA |
3152 | iter = index->address_table.data (); |
3153 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3154 | |
3155 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3156 | ||
3157 | while (iter < end) | |
3158 | { | |
3159 | ULONGEST hi, lo, cu_index; | |
3160 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3161 | iter += 8; | |
3162 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3163 | iter += 8; | |
3164 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3165 | iter += 4; | |
f652bce2 | 3166 | |
24a55014 | 3167 | if (lo > hi) |
f652bce2 | 3168 | { |
b98664d3 | 3169 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3170 | hex_string (lo), hex_string (hi)); |
24a55014 | 3171 | continue; |
f652bce2 | 3172 | } |
24a55014 | 3173 | |
b76e467d | 3174 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3175 | { |
b98664d3 | 3176 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3177 | (unsigned) cu_index); |
24a55014 | 3178 | continue; |
f652bce2 | 3179 | } |
24a55014 | 3180 | |
79748972 TT |
3181 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3182 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3183 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3184 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3185 | } |
3186 | ||
d320c2b5 | 3187 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3188 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
3189 | } |
3190 | ||
927aa2e7 JK |
3191 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3192 | populate the objfile's psymtabs_addrmap. */ | |
3193 | ||
3194 | static void | |
ed2dc618 | 3195 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3196 | struct dwarf2_section_info *section) |
3197 | { | |
ed2dc618 | 3198 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3199 | bfd *abfd = objfile->obfd; |
3200 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3201 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3202 | SECT_OFF_TEXT (objfile)); | |
3203 | ||
3204 | auto_obstack temp_obstack; | |
3205 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3206 | ||
3207 | std::unordered_map<sect_offset, | |
3208 | dwarf2_per_cu_data *, | |
3209 | gdb::hash_enum<sect_offset>> | |
3210 | debug_info_offset_to_per_cu; | |
b76e467d | 3211 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3212 | { |
927aa2e7 JK |
3213 | const auto insertpair |
3214 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3215 | if (!insertpair.second) | |
3216 | { | |
3217 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3218 | "debug_info_offset %s, ignoring .debug_aranges."), |
3219 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3220 | return; |
3221 | } | |
3222 | } | |
3223 | ||
3224 | dwarf2_read_section (objfile, section); | |
3225 | ||
3226 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3227 | ||
3228 | const gdb_byte *addr = section->buffer; | |
3229 | ||
3230 | while (addr < section->buffer + section->size) | |
3231 | { | |
3232 | const gdb_byte *const entry_addr = addr; | |
3233 | unsigned int bytes_read; | |
3234 | ||
3235 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3236 | &bytes_read); | |
3237 | addr += bytes_read; | |
3238 | ||
3239 | const gdb_byte *const entry_end = addr + entry_length; | |
3240 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3241 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3242 | if (addr + entry_length > section->buffer + section->size) | |
3243 | { | |
47e3f474 | 3244 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3245 | "length %s exceeds section length %s, " |
3246 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3247 | objfile_name (objfile), |
3248 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3249 | plongest (bytes_read + entry_length), |
3250 | pulongest (section->size)); | |
3251 | return; | |
3252 | } | |
3253 | ||
3254 | /* The version number. */ | |
3255 | const uint16_t version = read_2_bytes (abfd, addr); | |
3256 | addr += 2; | |
3257 | if (version != 2) | |
3258 | { | |
47e3f474 | 3259 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3260 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
3261 | objfile_name (objfile), |
3262 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
3263 | return; |
3264 | } | |
3265 | ||
3266 | const uint64_t debug_info_offset | |
3267 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3268 | addr += offset_size; | |
3269 | const auto per_cu_it | |
3270 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3271 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3272 | { | |
47e3f474 | 3273 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3274 | "debug_info_offset %s does not exists, " |
3275 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3276 | objfile_name (objfile), |
3277 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3278 | pulongest (debug_info_offset)); |
3279 | return; | |
3280 | } | |
3281 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3282 | ||
3283 | const uint8_t address_size = *addr++; | |
3284 | if (address_size < 1 || address_size > 8) | |
3285 | { | |
47e3f474 | 3286 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3287 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
3288 | objfile_name (objfile), |
3289 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
3290 | return; |
3291 | } | |
3292 | ||
3293 | const uint8_t segment_selector_size = *addr++; | |
3294 | if (segment_selector_size != 0) | |
3295 | { | |
47e3f474 | 3296 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3297 | "segment_selector_size %u is not supported, " |
3298 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3299 | objfile_name (objfile), |
3300 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3301 | segment_selector_size); |
3302 | return; | |
3303 | } | |
3304 | ||
3305 | /* Must pad to an alignment boundary that is twice the address | |
3306 | size. It is undocumented by the DWARF standard but GCC does | |
3307 | use it. */ | |
3308 | for (size_t padding = ((-(addr - section->buffer)) | |
3309 | & (2 * address_size - 1)); | |
3310 | padding > 0; padding--) | |
3311 | if (*addr++ != 0) | |
3312 | { | |
47e3f474 | 3313 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3314 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3315 | objfile_name (objfile), |
3316 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3317 | return; |
3318 | } | |
3319 | ||
3320 | for (;;) | |
3321 | { | |
3322 | if (addr + 2 * address_size > entry_end) | |
3323 | { | |
47e3f474 | 3324 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3325 | "address list is not properly terminated, " |
3326 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3327 | objfile_name (objfile), |
3328 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3329 | return; |
3330 | } | |
3331 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3332 | dwarf5_byte_order); | |
3333 | addr += address_size; | |
3334 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3335 | dwarf5_byte_order); | |
3336 | addr += address_size; | |
3337 | if (start == 0 && length == 0) | |
3338 | break; | |
3339 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3340 | { | |
3341 | /* Symbol was eliminated due to a COMDAT group. */ | |
3342 | continue; | |
3343 | } | |
3344 | ULONGEST end = start + length; | |
79748972 TT |
3345 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3346 | - baseaddr); | |
3347 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3348 | - baseaddr); | |
927aa2e7 JK |
3349 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3350 | } | |
3351 | } | |
3352 | ||
d320c2b5 | 3353 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3354 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3355 | } |
3356 | ||
9291a0cd TT |
3357 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3358 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3359 | constant pool and return true. If NAME cannot be found, return |
3360 | false. */ | |
2fdf6df6 | 3361 | |
109483d9 | 3362 | static bool |
9291a0cd TT |
3363 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3364 | offset_type **vec_out) | |
3365 | { | |
0cf03b49 | 3366 | offset_type hash; |
9291a0cd | 3367 | offset_type slot, step; |
559a7a62 | 3368 | int (*cmp) (const char *, const char *); |
9291a0cd | 3369 | |
791afaa2 | 3370 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3371 | if (current_language->la_language == language_cplus |
45280282 IB |
3372 | || current_language->la_language == language_fortran |
3373 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3374 | { |
3375 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3376 | not contain any. */ | |
a8719064 | 3377 | |
72998fb3 | 3378 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3379 | { |
109483d9 | 3380 | without_params = cp_remove_params (name); |
0cf03b49 | 3381 | |
72998fb3 | 3382 | if (without_params != NULL) |
791afaa2 | 3383 | name = without_params.get (); |
0cf03b49 JK |
3384 | } |
3385 | } | |
3386 | ||
559a7a62 | 3387 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3388 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3389 | simulate our NAME being searched is also lowercased. */ |
3390 | hash = mapped_index_string_hash ((index->version == 4 | |
3391 | && case_sensitivity == case_sensitive_off | |
3392 | ? 5 : index->version), | |
3393 | name); | |
3394 | ||
f00a2de2 PA |
3395 | slot = hash & (index->symbol_table.size () - 1); |
3396 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3397 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3398 | |
3399 | for (;;) | |
3400 | { | |
9291a0cd | 3401 | const char *str; |
f00a2de2 PA |
3402 | |
3403 | const auto &bucket = index->symbol_table[slot]; | |
3404 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3405 | return false; |
9291a0cd | 3406 | |
f00a2de2 | 3407 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3408 | if (!cmp (name, str)) |
9291a0cd TT |
3409 | { |
3410 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3411 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3412 | return true; |
9291a0cd TT |
3413 | } |
3414 | ||
f00a2de2 | 3415 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3416 | } |
3417 | } | |
3418 | ||
4485a1c1 SM |
3419 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3420 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3421 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3422 | ok to use deprecated sections. |
3423 | ||
3424 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3425 | out parameters that are filled in with information about the CU and | |
3426 | TU lists in the section. | |
3427 | ||
4485a1c1 | 3428 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3429 | |
d33bc52e | 3430 | static bool |
4485a1c1 SM |
3431 | read_gdb_index_from_buffer (struct objfile *objfile, |
3432 | const char *filename, | |
3433 | bool deprecated_ok, | |
3434 | gdb::array_view<const gdb_byte> buffer, | |
3435 | struct mapped_index *map, | |
3436 | const gdb_byte **cu_list, | |
3437 | offset_type *cu_list_elements, | |
3438 | const gdb_byte **types_list, | |
3439 | offset_type *types_list_elements) | |
3440 | { | |
3441 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3442 | |
9291a0cd | 3443 | /* Version check. */ |
4485a1c1 | 3444 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3445 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3446 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3447 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3448 | indices. */ |
831adc1f | 3449 | if (version < 4) |
481860b3 GB |
3450 | { |
3451 | static int warning_printed = 0; | |
3452 | if (!warning_printed) | |
3453 | { | |
3454 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3455 | filename); |
481860b3 GB |
3456 | warning_printed = 1; |
3457 | } | |
3458 | return 0; | |
3459 | } | |
3460 | /* Index version 4 uses a different hash function than index version | |
3461 | 5 and later. | |
3462 | ||
3463 | Versions earlier than 6 did not emit psymbols for inlined | |
3464 | functions. Using these files will cause GDB not to be able to | |
3465 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3466 | indices unless the user has done |
3467 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3468 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3469 | { |
3470 | static int warning_printed = 0; | |
3471 | if (!warning_printed) | |
3472 | { | |
e615022a DE |
3473 | warning (_("\ |
3474 | Skipping deprecated .gdb_index section in %s.\n\ | |
3475 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3476 | to use the section anyway."), | |
2ec9a5e0 | 3477 | filename); |
481860b3 GB |
3478 | warning_printed = 1; |
3479 | } | |
3480 | return 0; | |
3481 | } | |
796a7ff8 | 3482 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3483 | of the TU (for symbols coming from TUs), |
3484 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3485 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3486 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3487 | These are just performance bugs, and we can't distinguish gdb-generated | |
3488 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3489 | |
481860b3 | 3490 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3491 | longer backward compatible. */ |
796a7ff8 | 3492 | if (version > 8) |
594e8718 | 3493 | return 0; |
9291a0cd | 3494 | |
559a7a62 | 3495 | map->version = version; |
9291a0cd | 3496 | |
4485a1c1 | 3497 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3498 | |
4485a1c1 | 3499 | int i = 0; |
2ec9a5e0 TT |
3500 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3501 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3502 | / 8); | |
1fd400ff TT |
3503 | ++i; |
3504 | ||
2ec9a5e0 TT |
3505 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3506 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3507 | - MAYBE_SWAP (metadata[i])) | |
3508 | / 8); | |
987d643c | 3509 | ++i; |
1fd400ff | 3510 | |
f00a2de2 PA |
3511 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3512 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3513 | map->address_table | |
3514 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3515 | ++i; |
3516 | ||
f00a2de2 PA |
3517 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3518 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3519 | map->symbol_table | |
3520 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3521 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3522 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3523 | |
f00a2de2 | 3524 | ++i; |
f9d83a0b | 3525 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3526 | |
2ec9a5e0 TT |
3527 | return 1; |
3528 | } | |
3529 | ||
4485a1c1 SM |
3530 | /* Callback types for dwarf2_read_gdb_index. */ |
3531 | ||
3532 | typedef gdb::function_view | |
3533 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3534 | get_gdb_index_contents_ftype; | |
3535 | typedef gdb::function_view | |
3536 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3537 | get_gdb_index_contents_dwz_ftype; | |
3538 | ||
927aa2e7 | 3539 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3540 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3541 | ||
3542 | static int | |
4485a1c1 SM |
3543 | dwarf2_read_gdb_index |
3544 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3545 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3546 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3547 | { |
2ec9a5e0 TT |
3548 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3549 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3550 | struct dwz_file *dwz; |
12359b5e | 3551 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3552 | |
4485a1c1 SM |
3553 | gdb::array_view<const gdb_byte> main_index_contents |
3554 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3555 | ||
3556 | if (main_index_contents.empty ()) | |
3557 | return 0; | |
3558 | ||
3063847f | 3559 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3560 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3561 | use_deprecated_index_sections, | |
3562 | main_index_contents, map.get (), &cu_list, | |
3563 | &cu_list_elements, &types_list, | |
3564 | &types_list_elements)) | |
2ec9a5e0 TT |
3565 | return 0; |
3566 | ||
0fefef59 | 3567 | /* Don't use the index if it's empty. */ |
3063847f | 3568 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3569 | return 0; |
3570 | ||
2ec9a5e0 TT |
3571 | /* If there is a .dwz file, read it so we can get its CU list as |
3572 | well. */ | |
ed2dc618 | 3573 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3574 | if (dwz != NULL) |
2ec9a5e0 | 3575 | { |
2ec9a5e0 TT |
3576 | struct mapped_index dwz_map; |
3577 | const gdb_byte *dwz_types_ignore; | |
3578 | offset_type dwz_types_elements_ignore; | |
3579 | ||
4485a1c1 SM |
3580 | gdb::array_view<const gdb_byte> dwz_index_content |
3581 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3582 | ||
3583 | if (dwz_index_content.empty ()) | |
3584 | return 0; | |
3585 | ||
3586 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3587 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3588 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3589 | &dwz_list, &dwz_list_elements, |
3590 | &dwz_types_ignore, | |
3591 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3592 | { |
3593 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3594 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3595 | return 0; |
3596 | } | |
3597 | } | |
3598 | ||
12359b5e SM |
3599 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3600 | dwz_list, dwz_list_elements); | |
1fd400ff | 3601 | |
8b70b953 TT |
3602 | if (types_list_elements) |
3603 | { | |
8b70b953 TT |
3604 | /* We can only handle a single .debug_types when we have an |
3605 | index. */ | |
fd5866f6 | 3606 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3607 | return 0; |
3608 | ||
fd5866f6 | 3609 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3610 | |
12359b5e SM |
3611 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3612 | types_list, types_list_elements); | |
8b70b953 | 3613 | } |
9291a0cd | 3614 | |
3063847f | 3615 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3616 | |
3063847f | 3617 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3618 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3619 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3620 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3621 | |
3622 | return 1; | |
3623 | } | |
3624 | ||
dee91e82 | 3625 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3626 | |
dee91e82 DE |
3627 | static void |
3628 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3629 | const gdb_byte *info_ptr, |
dee91e82 DE |
3630 | struct die_info *comp_unit_die, |
3631 | int has_children, | |
3632 | void *data) | |
9291a0cd | 3633 | { |
dee91e82 | 3634 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3635 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3636 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3637 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3638 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3639 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3640 | struct attribute *attr; |
dee91e82 | 3641 | int i; |
7b9f3c50 DE |
3642 | void **slot; |
3643 | struct quick_file_names *qfn; | |
9291a0cd | 3644 | |
0186c6a7 DE |
3645 | gdb_assert (! this_cu->is_debug_types); |
3646 | ||
07261596 TT |
3647 | /* Our callers never want to match partial units -- instead they |
3648 | will match the enclosing full CU. */ | |
3649 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3650 | { | |
3651 | this_cu->v.quick->no_file_data = 1; | |
3652 | return; | |
3653 | } | |
3654 | ||
0186c6a7 | 3655 | lh_cu = this_cu; |
7b9f3c50 | 3656 | slot = NULL; |
dee91e82 | 3657 | |
fff8551c | 3658 | line_header_up lh; |
9c541725 | 3659 | sect_offset line_offset {}; |
fff8551c | 3660 | |
dee91e82 | 3661 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3662 | if (attr) |
3663 | { | |
7b9f3c50 DE |
3664 | struct quick_file_names find_entry; |
3665 | ||
9c541725 | 3666 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3667 | |
3668 | /* We may have already read in this line header (TU line header sharing). | |
3669 | If we have we're done. */ | |
094b34ac | 3670 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3671 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3672 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3673 | &find_entry, INSERT); | |
3674 | if (*slot != NULL) | |
3675 | { | |
9a3c8263 | 3676 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3677 | return; |
7b9f3c50 DE |
3678 | } |
3679 | ||
3019eac3 | 3680 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3681 | } |
3682 | if (lh == NULL) | |
3683 | { | |
094b34ac | 3684 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3685 | return; |
9291a0cd TT |
3686 | } |
3687 | ||
8d749320 | 3688 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3689 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3690 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3691 | gdb_assert (slot != NULL); |
3692 | *slot = qfn; | |
9291a0cd | 3693 | |
d721ba37 | 3694 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3695 | |
aa391654 TT |
3696 | int offset = 0; |
3697 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3698 | ++offset; | |
3699 | ||
3700 | qfn->num_file_names = offset + lh->file_names.size (); | |
8d749320 | 3701 | qfn->file_names = |
aa391654 TT |
3702 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3703 | if (offset != 0) | |
3704 | qfn->file_names[0] = xstrdup (fnd.name); | |
fff8551c | 3705 | for (i = 0; i < lh->file_names.size (); ++i) |
aa391654 | 3706 | qfn->file_names[i + offset] = file_full_name (i + 1, lh.get (), fnd.comp_dir); |
7b9f3c50 | 3707 | qfn->real_names = NULL; |
9291a0cd | 3708 | |
094b34ac | 3709 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3710 | } |
3711 | ||
3712 | /* A helper for the "quick" functions which attempts to read the line | |
3713 | table for THIS_CU. */ | |
3714 | ||
3715 | static struct quick_file_names * | |
e4a48d9d | 3716 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3717 | { |
0186c6a7 DE |
3718 | /* This should never be called for TUs. */ |
3719 | gdb_assert (! this_cu->is_debug_types); | |
3720 | /* Nor type unit groups. */ | |
3721 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3722 | |
dee91e82 DE |
3723 | if (this_cu->v.quick->file_names != NULL) |
3724 | return this_cu->v.quick->file_names; | |
3725 | /* If we know there is no line data, no point in looking again. */ | |
3726 | if (this_cu->v.quick->no_file_data) | |
3727 | return NULL; | |
3728 | ||
0186c6a7 | 3729 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3730 | |
3731 | if (this_cu->v.quick->no_file_data) | |
3732 | return NULL; | |
3733 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3734 | } |
3735 | ||
3736 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3737 | real path for a given file name from the line table. */ |
2fdf6df6 | 3738 | |
9291a0cd | 3739 | static const char * |
7b9f3c50 DE |
3740 | dw2_get_real_path (struct objfile *objfile, |
3741 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3742 | { |
7b9f3c50 DE |
3743 | if (qfn->real_names == NULL) |
3744 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3745 | qfn->num_file_names, const char *); |
9291a0cd | 3746 | |
7b9f3c50 | 3747 | if (qfn->real_names[index] == NULL) |
14278e1f | 3748 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3749 | |
7b9f3c50 | 3750 | return qfn->real_names[index]; |
9291a0cd TT |
3751 | } |
3752 | ||
3753 | static struct symtab * | |
3754 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3755 | { | |
ed2dc618 SM |
3756 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3757 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3758 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3759 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3760 | |
43f3e411 DE |
3761 | if (cust == NULL) |
3762 | return NULL; | |
ed2dc618 | 3763 | |
43f3e411 | 3764 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3765 | } |
3766 | ||
7b9f3c50 DE |
3767 | /* Traversal function for dw2_forget_cached_source_info. */ |
3768 | ||
3769 | static int | |
3770 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3771 | { |
7b9f3c50 | 3772 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3773 | |
7b9f3c50 | 3774 | if (file_data->real_names) |
9291a0cd | 3775 | { |
7b9f3c50 | 3776 | int i; |
9291a0cd | 3777 | |
7b9f3c50 | 3778 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3779 | { |
7b9f3c50 DE |
3780 | xfree ((void*) file_data->real_names[i]); |
3781 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3782 | } |
3783 | } | |
7b9f3c50 DE |
3784 | |
3785 | return 1; | |
3786 | } | |
3787 | ||
3788 | static void | |
3789 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3790 | { | |
ed2dc618 SM |
3791 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3792 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3793 | |
3794 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3795 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3796 | } |
3797 | ||
f8eba3c6 TT |
3798 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3799 | the symtabs and calls the iterator. */ | |
3800 | ||
3801 | static int | |
3802 | dw2_map_expand_apply (struct objfile *objfile, | |
3803 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3804 | const char *name, const char *real_path, |
14bc53a8 | 3805 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3806 | { |
43f3e411 | 3807 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3808 | |
3809 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3810 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3811 | return 0; |
3812 | ||
3813 | /* This may expand more than one symtab, and we want to iterate over | |
3814 | all of them. */ | |
58f0c718 | 3815 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3816 | |
14bc53a8 PA |
3817 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3818 | last_made, callback); | |
f8eba3c6 TT |
3819 | } |
3820 | ||
3821 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3822 | ||
14bc53a8 PA |
3823 | static bool |
3824 | dw2_map_symtabs_matching_filename | |
3825 | (struct objfile *objfile, const char *name, const char *real_path, | |
3826 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3827 | { |
c011a4f4 | 3828 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3829 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3830 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3831 | |
848e3e78 DE |
3832 | /* The rule is CUs specify all the files, including those used by |
3833 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3834 | |
b76e467d | 3835 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3836 | { |
3d7bb9d9 | 3837 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3838 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3839 | continue; |
3840 | ||
b76e467d | 3841 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3842 | if (file_data == NULL) |
9291a0cd TT |
3843 | continue; |
3844 | ||
b76e467d | 3845 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3846 | { |
7b9f3c50 | 3847 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3848 | const char *this_real_name; |
9291a0cd | 3849 | |
af529f8f | 3850 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3851 | { |
f5b95b50 | 3852 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3853 | callback)) |
3854 | return true; | |
288e77a7 | 3855 | continue; |
4aac40c8 | 3856 | } |
9291a0cd | 3857 | |
c011a4f4 DE |
3858 | /* Before we invoke realpath, which can get expensive when many |
3859 | files are involved, do a quick comparison of the basenames. */ | |
3860 | if (! basenames_may_differ | |
3861 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3862 | continue; | |
3863 | ||
da235a7c JK |
3864 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3865 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3866 | { |
da235a7c | 3867 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3868 | callback)) |
3869 | return true; | |
288e77a7 | 3870 | continue; |
da235a7c | 3871 | } |
9291a0cd | 3872 | |
da235a7c JK |
3873 | if (real_path != NULL) |
3874 | { | |
af529f8f JK |
3875 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3876 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3877 | if (this_real_name != NULL |
af529f8f | 3878 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3879 | { |
f5b95b50 | 3880 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3881 | callback)) |
3882 | return true; | |
288e77a7 | 3883 | continue; |
9291a0cd TT |
3884 | } |
3885 | } | |
3886 | } | |
3887 | } | |
3888 | ||
14bc53a8 | 3889 | return false; |
9291a0cd TT |
3890 | } |
3891 | ||
da51c347 DE |
3892 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3893 | ||
3894 | struct dw2_symtab_iterator | |
9291a0cd | 3895 | { |
ed2dc618 SM |
3896 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3897 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3898 | /* If set, only look for symbols that match that block. Valid values are |
3899 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3900 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3901 | /* The kind of symbol we're looking for. */ |
3902 | domain_enum domain; | |
3903 | /* The list of CUs from the index entry of the symbol, | |
3904 | or NULL if not found. */ | |
3905 | offset_type *vec; | |
3906 | /* The next element in VEC to look at. */ | |
3907 | int next; | |
3908 | /* The number of elements in VEC, or zero if there is no match. */ | |
3909 | int length; | |
8943b874 DE |
3910 | /* Have we seen a global version of the symbol? |
3911 | If so we can ignore all further global instances. | |
3912 | This is to work around gold/15646, inefficient gold-generated | |
3913 | indices. */ | |
3914 | int global_seen; | |
da51c347 | 3915 | }; |
9291a0cd | 3916 | |
2b79f376 | 3917 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3918 | |
9291a0cd | 3919 | static void |
da51c347 | 3920 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3921 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3922 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3923 | domain_enum domain, |
3924 | const char *name) | |
3925 | { | |
ed2dc618 | 3926 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3927 | iter->block_index = block_index; |
3928 | iter->domain = domain; | |
3929 | iter->next = 0; | |
8943b874 | 3930 | iter->global_seen = 0; |
da51c347 | 3931 | |
3063847f | 3932 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3933 | |
3934 | /* index is NULL if OBJF_READNOW. */ | |
3935 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3936 | iter->length = MAYBE_SWAP (*iter->vec); |
3937 | else | |
3938 | { | |
3939 | iter->vec = NULL; | |
3940 | iter->length = 0; | |
3941 | } | |
3942 | } | |
3943 | ||
3944 | /* Return the next matching CU or NULL if there are no more. */ | |
3945 | ||
3946 | static struct dwarf2_per_cu_data * | |
3947 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3948 | { | |
ed2dc618 SM |
3949 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3950 | ||
da51c347 DE |
3951 | for ( ; iter->next < iter->length; ++iter->next) |
3952 | { | |
3953 | offset_type cu_index_and_attrs = | |
3954 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3955 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3956 | gdb_index_symbol_kind symbol_kind = |
3957 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3958 | /* Only check the symbol attributes if they're present. | |
3959 | Indices prior to version 7 don't record them, | |
3960 | and indices >= 7 may elide them for certain symbols | |
3961 | (gold does this). */ | |
3962 | int attrs_valid = | |
ed2dc618 | 3963 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3964 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3965 | ||
3190f0c6 | 3966 | /* Don't crash on bad data. */ |
b76e467d | 3967 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3968 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3969 | { |
b98664d3 | 3970 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3971 | " [in module %s]"), |
3972 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3973 | continue; |
3974 | } | |
3975 | ||
ff4c9fec | 3976 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3977 | |
da51c347 | 3978 | /* Skip if already read in. */ |
43f3e411 | 3979 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3980 | continue; |
3981 | ||
8943b874 DE |
3982 | /* Check static vs global. */ |
3983 | if (attrs_valid) | |
3984 | { | |
2b79f376 SM |
3985 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3986 | ||
3987 | if (iter->block_index.has_value ()) | |
3988 | { | |
3989 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3990 | ||
3991 | if (is_static != want_static) | |
3992 | continue; | |
3993 | } | |
3994 | ||
8943b874 DE |
3995 | /* Work around gold/15646. */ |
3996 | if (!is_static && iter->global_seen) | |
3997 | continue; | |
3998 | if (!is_static) | |
3999 | iter->global_seen = 1; | |
4000 | } | |
da51c347 DE |
4001 | |
4002 | /* Only check the symbol's kind if it has one. */ | |
4003 | if (attrs_valid) | |
4004 | { | |
4005 | switch (iter->domain) | |
4006 | { | |
4007 | case VAR_DOMAIN: | |
4008 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4009 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4010 | /* Some types are also in VAR_DOMAIN. */ | |
4011 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4012 | continue; | |
4013 | break; | |
4014 | case STRUCT_DOMAIN: | |
4015 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4016 | continue; | |
4017 | break; | |
4018 | case LABEL_DOMAIN: | |
4019 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4020 | continue; | |
4021 | break; | |
4022 | default: | |
4023 | break; | |
4024 | } | |
4025 | } | |
4026 | ||
4027 | ++iter->next; | |
4028 | return per_cu; | |
4029 | } | |
4030 | ||
4031 | return NULL; | |
4032 | } | |
4033 | ||
43f3e411 | 4034 | static struct compunit_symtab * |
c7f839cb | 4035 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 4036 | const char *name, domain_enum domain) |
9291a0cd | 4037 | { |
43f3e411 | 4038 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4039 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4040 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4041 | |
b5ec771e PA |
4042 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4043 | ||
ed2dc618 SM |
4044 | struct dw2_symtab_iterator iter; |
4045 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4046 | |
2b79f376 | 4047 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 4048 | |
ed2dc618 SM |
4049 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4050 | { | |
4051 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4052 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 4053 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 4054 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 4055 | |
ed2dc618 SM |
4056 | sym = block_find_symbol (block, name, domain, |
4057 | block_find_non_opaque_type_preferred, | |
4058 | &with_opaque); | |
b2e2f908 | 4059 | |
ed2dc618 SM |
4060 | /* Some caution must be observed with overloaded functions |
4061 | and methods, since the index will not contain any overload | |
4062 | information (but NAME might contain it). */ | |
da51c347 | 4063 | |
ed2dc618 SM |
4064 | if (sym != NULL |
4065 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4066 | return stab; | |
4067 | if (with_opaque != NULL | |
4068 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4069 | stab_best = stab; | |
da51c347 | 4070 | |
ed2dc618 | 4071 | /* Keep looking through other CUs. */ |
9291a0cd | 4072 | } |
9291a0cd | 4073 | |
da51c347 | 4074 | return stab_best; |
9291a0cd TT |
4075 | } |
4076 | ||
4077 | static void | |
4078 | dw2_print_stats (struct objfile *objfile) | |
4079 | { | |
ed2dc618 SM |
4080 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4081 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4082 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4083 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4084 | int count = 0; |
9291a0cd | 4085 | |
ed2dc618 | 4086 | for (int i = 0; i < total; ++i) |
9291a0cd | 4087 | { |
ff4c9fec | 4088 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4089 | |
43f3e411 | 4090 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4091 | ++count; |
4092 | } | |
e4a48d9d | 4093 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4094 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4095 | } | |
4096 | ||
779bd270 DE |
4097 | /* This dumps minimal information about the index. |
4098 | It is called via "mt print objfiles". | |
4099 | One use is to verify .gdb_index has been loaded by the | |
4100 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4101 | ||
9291a0cd TT |
4102 | static void |
4103 | dw2_dump (struct objfile *objfile) | |
4104 | { | |
ed2dc618 SM |
4105 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4106 | = get_dwarf2_per_objfile (objfile); | |
4107 | ||
779bd270 DE |
4108 | gdb_assert (dwarf2_per_objfile->using_index); |
4109 | printf_filtered (".gdb_index:"); | |
4110 | if (dwarf2_per_objfile->index_table != NULL) | |
4111 | { | |
4112 | printf_filtered (" version %d\n", | |
4113 | dwarf2_per_objfile->index_table->version); | |
4114 | } | |
4115 | else | |
4116 | printf_filtered (" faked for \"readnow\"\n"); | |
4117 | printf_filtered ("\n"); | |
9291a0cd TT |
4118 | } |
4119 | ||
9291a0cd TT |
4120 | static void |
4121 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4122 | const char *func_name) | |
4123 | { | |
ed2dc618 SM |
4124 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4125 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4126 | |
ed2dc618 SM |
4127 | struct dw2_symtab_iterator iter; |
4128 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4129 | |
2b79f376 | 4130 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 4131 | |
ed2dc618 | 4132 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4133 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4134 | |
9291a0cd TT |
4135 | } |
4136 | ||
4137 | static void | |
4138 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4139 | { | |
ed2dc618 SM |
4140 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4141 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4142 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4143 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4144 | |
ed2dc618 | 4145 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4146 | { |
ff4c9fec | 4147 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4148 | |
58f0c718 TT |
4149 | /* We don't want to directly expand a partial CU, because if we |
4150 | read it with the wrong language, then assertion failures can | |
4151 | be triggered later on. See PR symtab/23010. So, tell | |
4152 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4153 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4154 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4155 | } |
4156 | } | |
4157 | ||
4158 | static void | |
652a8996 JK |
4159 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4160 | const char *fullname) | |
9291a0cd | 4161 | { |
ed2dc618 SM |
4162 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4163 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4164 | |
4165 | /* We don't need to consider type units here. | |
4166 | This is only called for examining code, e.g. expand_line_sal. | |
4167 | There can be an order of magnitude (or more) more type units | |
4168 | than comp units, and we avoid them if we can. */ | |
4169 | ||
b76e467d | 4170 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4171 | { |
3d7bb9d9 | 4172 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4173 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4174 | continue; |
4175 | ||
b76e467d | 4176 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4177 | if (file_data == NULL) |
9291a0cd TT |
4178 | continue; |
4179 | ||
b76e467d | 4180 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4181 | { |
652a8996 JK |
4182 | const char *this_fullname = file_data->file_names[j]; |
4183 | ||
4184 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4185 | { |
58f0c718 | 4186 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4187 | break; |
4188 | } | |
4189 | } | |
4190 | } | |
4191 | } | |
4192 | ||
9291a0cd | 4193 | static void |
199b4314 TT |
4194 | dw2_map_matching_symbols |
4195 | (struct objfile *objfile, | |
b054970d | 4196 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
4197 | int global, |
4198 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 4199 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4200 | { |
40658b94 | 4201 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4202 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4203 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4204 | } |
4205 | ||
e1ef7d7a PA |
4206 | /* Starting from a search name, return the string that finds the upper |
4207 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4208 | list. Returns the empty string to indicate that the upper bound is | |
4209 | the end of the list. */ | |
4210 | ||
4211 | static std::string | |
4212 | make_sort_after_prefix_name (const char *search_name) | |
4213 | { | |
4214 | /* When looking to complete "func", we find the upper bound of all | |
4215 | symbols that start with "func" by looking for where we'd insert | |
4216 | the closest string that would follow "func" in lexicographical | |
4217 | order. Usually, that's "func"-with-last-character-incremented, | |
4218 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4219 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4220 | Especially mind the 0xff character, which is a valid character in | |
4221 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4222 | rule out compilers allowing it in identifiers. Note that | |
4223 | conveniently, strcmp/strcasecmp are specified to compare | |
4224 | characters interpreted as unsigned char. So what we do is treat | |
4225 | the whole string as a base 256 number composed of a sequence of | |
4226 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4227 | to 0, and carries 1 to the following more-significant position. | |
4228 | If the very first character in SEARCH_NAME ends up incremented | |
4229 | and carries/overflows, then the upper bound is the end of the | |
4230 | list. The string after the empty string is also the empty | |
4231 | string. | |
4232 | ||
4233 | Some examples of this operation: | |
4234 | ||
4235 | SEARCH_NAME => "+1" RESULT | |
4236 | ||
4237 | "abc" => "abd" | |
4238 | "ab\xff" => "ac" | |
4239 | "\xff" "a" "\xff" => "\xff" "b" | |
4240 | "\xff" => "" | |
4241 | "\xff\xff" => "" | |
4242 | "" => "" | |
4243 | ||
4244 | Then, with these symbols for example: | |
4245 | ||
4246 | func | |
4247 | func1 | |
4248 | fund | |
4249 | ||
4250 | completing "func" looks for symbols between "func" and | |
4251 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4252 | which finds "func" and "func1", but not "fund". | |
4253 | ||
4254 | And with: | |
4255 | ||
4256 | funcÿ (Latin1 'ÿ' [0xff]) | |
4257 | funcÿ1 | |
4258 | fund | |
4259 | ||
4260 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4261 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4262 | ||
4263 | And with: | |
4264 | ||
4265 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4266 | ÿÿ1 | |
4267 | ||
4268 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4269 | the end of the list. | |
4270 | */ | |
4271 | std::string after = search_name; | |
4272 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4273 | after.pop_back (); | |
4274 | if (!after.empty ()) | |
4275 | after.back () = (unsigned char) after.back () + 1; | |
4276 | return after; | |
4277 | } | |
4278 | ||
5c58de74 | 4279 | /* See declaration. */ |
61d96d7e | 4280 | |
5c58de74 PA |
4281 | std::pair<std::vector<name_component>::const_iterator, |
4282 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4283 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 4284 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 4285 | { |
5c58de74 PA |
4286 | auto *name_cmp |
4287 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4288 | |
3b00ef10 TT |
4289 | const char *lang_name |
4290 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 4291 | |
3f563c84 PA |
4292 | /* Comparison function object for lower_bound that matches against a |
4293 | given symbol name. */ | |
4294 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4295 | const char *name) | |
4296 | { | |
5c58de74 | 4297 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4298 | const char *elem_name = elem_qualified + elem.name_offset; |
4299 | return name_cmp (elem_name, name) < 0; | |
4300 | }; | |
4301 | ||
4302 | /* Comparison function object for upper_bound that matches against a | |
4303 | given symbol name. */ | |
4304 | auto lookup_compare_upper = [&] (const char *name, | |
4305 | const name_component &elem) | |
4306 | { | |
5c58de74 | 4307 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4308 | const char *elem_name = elem_qualified + elem.name_offset; |
4309 | return name_cmp (name, elem_name) < 0; | |
4310 | }; | |
4311 | ||
5c58de74 PA |
4312 | auto begin = this->name_components.begin (); |
4313 | auto end = this->name_components.end (); | |
3f563c84 PA |
4314 | |
4315 | /* Find the lower bound. */ | |
4316 | auto lower = [&] () | |
4317 | { | |
3b00ef10 | 4318 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4319 | return begin; |
4320 | else | |
3b00ef10 | 4321 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4322 | } (); |
4323 | ||
4324 | /* Find the upper bound. */ | |
4325 | auto upper = [&] () | |
4326 | { | |
5c58de74 | 4327 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4328 | { |
e1ef7d7a PA |
4329 | /* In completion mode, we want UPPER to point past all |
4330 | symbols names that have the same prefix. I.e., with | |
4331 | these symbols, and completing "func": | |
4332 | ||
4333 | function << lower bound | |
4334 | function1 | |
4335 | other_function << upper bound | |
4336 | ||
4337 | We find the upper bound by looking for the insertion | |
4338 | point of "func"-with-last-character-incremented, | |
4339 | i.e. "fund". */ | |
3b00ef10 | 4340 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4341 | if (after.empty ()) |
3f563c84 | 4342 | return end; |
e6b2f5ef PA |
4343 | return std::lower_bound (lower, end, after.c_str (), |
4344 | lookup_compare_lower); | |
3f563c84 PA |
4345 | } |
4346 | else | |
3b00ef10 | 4347 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4348 | } (); |
4349 | ||
5c58de74 PA |
4350 | return {lower, upper}; |
4351 | } | |
4352 | ||
4353 | /* See declaration. */ | |
4354 | ||
4355 | void | |
44ed8f3e | 4356 | mapped_index_base::build_name_components () |
5c58de74 PA |
4357 | { |
4358 | if (!this->name_components.empty ()) | |
4359 | return; | |
4360 | ||
4361 | this->name_components_casing = case_sensitivity; | |
4362 | auto *name_cmp | |
4363 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4364 | ||
4365 | /* The code below only knows how to break apart components of C++ | |
4366 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4367 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4368 | auto count = this->symbol_name_count (); |
4369 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4370 | { |
44ed8f3e | 4371 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4372 | continue; |
4373 | ||
4374 | const char *name = this->symbol_name_at (idx); | |
4375 | ||
4376 | /* Add each name component to the name component table. */ | |
4377 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4378 | |
4379 | if (strstr (name, "::") != nullptr) | |
4380 | { | |
4381 | for (unsigned int current_len = cp_find_first_component (name); | |
4382 | name[current_len] != '\0'; | |
4383 | current_len += cp_find_first_component (name + current_len)) | |
4384 | { | |
4385 | gdb_assert (name[current_len] == ':'); | |
4386 | this->name_components.push_back ({previous_len, idx}); | |
4387 | /* Skip the '::'. */ | |
4388 | current_len += 2; | |
4389 | previous_len = current_len; | |
4390 | } | |
4391 | } | |
4392 | else | |
5c58de74 | 4393 | { |
3b00ef10 TT |
4394 | /* Handle the Ada encoded (aka mangled) form here. */ |
4395 | for (const char *iter = strstr (name, "__"); | |
4396 | iter != nullptr; | |
4397 | iter = strstr (iter, "__")) | |
4398 | { | |
4399 | this->name_components.push_back ({previous_len, idx}); | |
4400 | iter += 2; | |
4401 | previous_len = iter - name; | |
4402 | } | |
5c58de74 | 4403 | } |
3b00ef10 | 4404 | |
5c58de74 PA |
4405 | this->name_components.push_back ({previous_len, idx}); |
4406 | } | |
4407 | ||
4408 | /* Sort name_components elements by name. */ | |
4409 | auto name_comp_compare = [&] (const name_component &left, | |
4410 | const name_component &right) | |
4411 | { | |
4412 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4413 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4414 | ||
4415 | const char *left_name = left_qualified + left.name_offset; | |
4416 | const char *right_name = right_qualified + right.name_offset; | |
4417 | ||
4418 | return name_cmp (left_name, right_name) < 0; | |
4419 | }; | |
4420 | ||
4421 | std::sort (this->name_components.begin (), | |
4422 | this->name_components.end (), | |
4423 | name_comp_compare); | |
4424 | } | |
4425 | ||
4426 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4427 | mapped_index_base instead of the containing objfile. This is split |
4428 | to a separate function in order to be able to unit test the | |
4429 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4430 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4431 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4432 | |
4433 | static void | |
4434 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4435 | (mapped_index_base &index, |
5c58de74 PA |
4436 | const lookup_name_info &lookup_name_in, |
4437 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4438 | enum search_domain kind, | |
3b00ef10 | 4439 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4440 | { |
4441 | lookup_name_info lookup_name_without_params | |
4442 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4443 | |
4444 | /* Build the symbol name component sorted vector, if we haven't | |
4445 | yet. */ | |
4446 | index.build_name_components (); | |
4447 | ||
3f563c84 PA |
4448 | /* The same symbol may appear more than once in the range though. |
4449 | E.g., if we're looking for symbols that complete "w", and we have | |
4450 | a symbol named "w1::w2", we'll find the two name components for | |
4451 | that same symbol in the range. To be sure we only call the | |
4452 | callback once per symbol, we first collect the symbol name | |
4453 | indexes that matched in a temporary vector and ignore | |
4454 | duplicates. */ | |
4455 | std::vector<offset_type> matches; | |
3f563c84 | 4456 | |
3b00ef10 TT |
4457 | struct name_and_matcher |
4458 | { | |
4459 | symbol_name_matcher_ftype *matcher; | |
4460 | const std::string &name; | |
4461 | ||
4462 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4463 | { |
3b00ef10 TT |
4464 | return matcher == other.matcher && name == other.name; |
4465 | } | |
4466 | }; | |
4467 | ||
4468 | /* A vector holding all the different symbol name matchers, for all | |
4469 | languages. */ | |
4470 | std::vector<name_and_matcher> matchers; | |
4471 | ||
4472 | for (int i = 0; i < nr_languages; i++) | |
4473 | { | |
4474 | enum language lang_e = (enum language) i; | |
4475 | ||
4476 | const language_defn *lang = language_def (lang_e); | |
4477 | symbol_name_matcher_ftype *name_matcher | |
4478 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4479 | |
3b00ef10 TT |
4480 | name_and_matcher key { |
4481 | name_matcher, | |
4482 | lookup_name_without_params.language_lookup_name (lang_e) | |
4483 | }; | |
4484 | ||
4485 | /* Don't insert the same comparison routine more than once. | |
4486 | Note that we do this linear walk. This is not a problem in | |
4487 | practice because the number of supported languages is | |
4488 | low. */ | |
4489 | if (std::find (matchers.begin (), matchers.end (), key) | |
4490 | != matchers.end ()) | |
9291a0cd | 4491 | continue; |
3b00ef10 TT |
4492 | matchers.push_back (std::move (key)); |
4493 | ||
4494 | auto bounds | |
4495 | = index.find_name_components_bounds (lookup_name_without_params, | |
4496 | lang_e); | |
4497 | ||
4498 | /* Now for each symbol name in range, check to see if we have a name | |
4499 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4500 | ||
4501 | for (; bounds.first != bounds.second; ++bounds.first) | |
4502 | { | |
4503 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4504 | ||
4505 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4506 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4507 | continue; | |
9291a0cd | 4508 | |
3b00ef10 TT |
4509 | matches.push_back (bounds.first->idx); |
4510 | } | |
3f563c84 PA |
4511 | } |
4512 | ||
4513 | std::sort (matches.begin (), matches.end ()); | |
4514 | ||
4515 | /* Finally call the callback, once per match. */ | |
4516 | ULONGEST prev = -1; | |
4517 | for (offset_type idx : matches) | |
4518 | { | |
4519 | if (prev != idx) | |
4520 | { | |
3b00ef10 TT |
4521 | if (!match_callback (idx)) |
4522 | break; | |
3f563c84 PA |
4523 | prev = idx; |
4524 | } | |
4525 | } | |
4526 | ||
4527 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4528 | (offset_type)-1 are both possible values. */ | |
4529 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4530 | } | |
4531 | ||
c62446b1 PA |
4532 | #if GDB_SELF_TEST |
4533 | ||
4534 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4535 | ||
a3c5fafd PA |
4536 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4537 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4538 | mapped_index_base interface. Builds an index from the symbol list | |
4539 | passed as parameter to the constructor. */ | |
4540 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4541 | { |
4542 | public: | |
a3c5fafd PA |
4543 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4544 | : m_symbol_table (symbols) | |
c62446b1 PA |
4545 | {} |
4546 | ||
a3c5fafd | 4547 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4548 | |
a3c5fafd | 4549 | /* Return the number of names in the symbol table. */ |
632e107b | 4550 | size_t symbol_name_count () const override |
c62446b1 | 4551 | { |
a3c5fafd | 4552 | return m_symbol_table.size (); |
c62446b1 PA |
4553 | } |
4554 | ||
a3c5fafd | 4555 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4556 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4557 | { |
4558 | return m_symbol_table[idx]; | |
4559 | } | |
c62446b1 | 4560 | |
a3c5fafd PA |
4561 | private: |
4562 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4563 | }; |
4564 | ||
4565 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4566 | string, to pass to print routines. */ | |
4567 | ||
4568 | static const char * | |
4569 | string_or_null (const char *str) | |
4570 | { | |
4571 | return str != NULL ? str : "<null>"; | |
4572 | } | |
4573 | ||
4574 | /* Check if a lookup_name_info built from | |
4575 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4576 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4577 | matching order. If no match expected, then an empty list is | |
4578 | specified. Returns true on success. On failure prints a warning | |
4579 | indicating the file:line that failed, and returns false. */ | |
4580 | ||
4581 | static bool | |
4582 | check_match (const char *file, int line, | |
4583 | mock_mapped_index &mock_index, | |
4584 | const char *name, symbol_name_match_type match_type, | |
4585 | bool completion_mode, | |
4586 | std::initializer_list<const char *> expected_list) | |
4587 | { | |
4588 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4589 | ||
4590 | bool matched = true; | |
4591 | ||
4592 | auto mismatch = [&] (const char *expected_str, | |
4593 | const char *got) | |
4594 | { | |
4595 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4596 | "expected=\"%s\", got=\"%s\"\n"), | |
4597 | file, line, | |
4598 | (match_type == symbol_name_match_type::FULL | |
4599 | ? "FULL" : "WILD"), | |
4600 | name, string_or_null (expected_str), string_or_null (got)); | |
4601 | matched = false; | |
4602 | }; | |
4603 | ||
4604 | auto expected_it = expected_list.begin (); | |
4605 | auto expected_end = expected_list.end (); | |
4606 | ||
a3c5fafd | 4607 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4608 | NULL, ALL_DOMAIN, |
4609 | [&] (offset_type idx) | |
4610 | { | |
a3c5fafd | 4611 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4612 | const char *expected_str |
4613 | = expected_it == expected_end ? NULL : *expected_it++; | |
4614 | ||
4615 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4616 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4617 | return true; |
c62446b1 PA |
4618 | }); |
4619 | ||
4620 | const char *expected_str | |
4621 | = expected_it == expected_end ? NULL : *expected_it++; | |
4622 | if (expected_str != NULL) | |
4623 | mismatch (expected_str, NULL); | |
4624 | ||
4625 | return matched; | |
4626 | } | |
4627 | ||
4628 | /* The symbols added to the mock mapped_index for testing (in | |
4629 | canonical form). */ | |
4630 | static const char *test_symbols[] = { | |
4631 | "function", | |
4632 | "std::bar", | |
4633 | "std::zfunction", | |
4634 | "std::zfunction2", | |
4635 | "w1::w2", | |
4636 | "ns::foo<char*>", | |
4637 | "ns::foo<int>", | |
4638 | "ns::foo<long>", | |
a20714ff PA |
4639 | "ns2::tmpl<int>::foo2", |
4640 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4641 | |
e1ef7d7a PA |
4642 | /* These are used to check that the increment-last-char in the |
4643 | matching algorithm for completion doesn't match "t1_fund" when | |
4644 | completing "t1_func". */ | |
4645 | "t1_func", | |
4646 | "t1_func1", | |
4647 | "t1_fund", | |
4648 | "t1_fund1", | |
4649 | ||
4650 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4651 | cp-name-parser understands this as a single identifier ("função" | |
4652 | is "function" in PT). */ | |
4653 | u8"u8função", | |
4654 | ||
4655 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4656 | "yfunc\377", | |
4657 | ||
4658 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4659 | "\377", | |
4660 | "\377\377123", | |
4661 | ||
c62446b1 PA |
4662 | /* A name with all sorts of complications. Starts with "z" to make |
4663 | it easier for the completion tests below. */ | |
4664 | #define Z_SYM_NAME \ | |
4665 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4666 | "::tuple<(anonymous namespace)::ui*, " \ | |
4667 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4668 | ||
4669 | Z_SYM_NAME | |
4670 | }; | |
4671 | ||
a3c5fafd PA |
4672 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4673 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4674 | in completion mode. */ | |
5c58de74 PA |
4675 | |
4676 | static bool | |
a3c5fafd | 4677 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4678 | const char *search_name, |
4679 | gdb::array_view<const char *> expected_syms) | |
4680 | { | |
4681 | lookup_name_info lookup_name (search_name, | |
4682 | symbol_name_match_type::FULL, true); | |
4683 | ||
3b00ef10 TT |
4684 | auto bounds = index.find_name_components_bounds (lookup_name, |
4685 | language_cplus); | |
5c58de74 PA |
4686 | |
4687 | size_t distance = std::distance (bounds.first, bounds.second); | |
4688 | if (distance != expected_syms.size ()) | |
4689 | return false; | |
4690 | ||
4691 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4692 | { | |
4693 | auto nc_elem = bounds.first + exp_elem; | |
4694 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4695 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4696 | return false; | |
4697 | } | |
4698 | ||
4699 | return true; | |
4700 | } | |
4701 | ||
4702 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4703 | method. */ | |
4704 | ||
c62446b1 | 4705 | static void |
5c58de74 PA |
4706 | test_mapped_index_find_name_component_bounds () |
4707 | { | |
4708 | mock_mapped_index mock_index (test_symbols); | |
4709 | ||
a3c5fafd | 4710 | mock_index.build_name_components (); |
5c58de74 PA |
4711 | |
4712 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4713 | method in completion mode. */ | |
4714 | { | |
4715 | static const char *expected_syms[] = { | |
4716 | "t1_func", | |
4717 | "t1_func1", | |
5c58de74 PA |
4718 | }; |
4719 | ||
a3c5fafd | 4720 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4721 | "t1_func", expected_syms)); |
4722 | } | |
4723 | ||
4724 | /* Check that the increment-last-char in the name matching algorithm | |
4725 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4726 | { | |
4727 | static const char *expected_syms1[] = { | |
4728 | "\377", | |
4729 | "\377\377123", | |
4730 | }; | |
a3c5fafd | 4731 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4732 | "\377", expected_syms1)); |
4733 | ||
4734 | static const char *expected_syms2[] = { | |
4735 | "\377\377123", | |
4736 | }; | |
a3c5fafd | 4737 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4738 | "\377\377", expected_syms2)); |
4739 | } | |
4740 | } | |
4741 | ||
4742 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4743 | ||
4744 | static void | |
4745 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4746 | { |
4747 | mock_mapped_index mock_index (test_symbols); | |
4748 | ||
4749 | /* We let all tests run until the end even if some fails, for debug | |
4750 | convenience. */ | |
4751 | bool any_mismatch = false; | |
4752 | ||
4753 | /* Create the expected symbols list (an initializer_list). Needed | |
4754 | because lists have commas, and we need to pass them to CHECK, | |
4755 | which is a macro. */ | |
4756 | #define EXPECT(...) { __VA_ARGS__ } | |
4757 | ||
4758 | /* Wrapper for check_match that passes down the current | |
4759 | __FILE__/__LINE__. */ | |
4760 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4761 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4762 | mock_index, \ | |
4763 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4764 | EXPECTED_LIST) | |
4765 | ||
4766 | /* Identity checks. */ | |
4767 | for (const char *sym : test_symbols) | |
4768 | { | |
4769 | /* Should be able to match all existing symbols. */ | |
4770 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4771 | EXPECT (sym)); | |
4772 | ||
4773 | /* Should be able to match all existing symbols with | |
4774 | parameters. */ | |
4775 | std::string with_params = std::string (sym) + "(int)"; | |
4776 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4777 | EXPECT (sym)); | |
4778 | ||
4779 | /* Should be able to match all existing symbols with | |
4780 | parameters and qualifiers. */ | |
4781 | with_params = std::string (sym) + " ( int ) const"; | |
4782 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4783 | EXPECT (sym)); | |
4784 | ||
4785 | /* This should really find sym, but cp-name-parser.y doesn't | |
4786 | know about lvalue/rvalue qualifiers yet. */ | |
4787 | with_params = std::string (sym) + " ( int ) &&"; | |
4788 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4789 | {}); | |
4790 | } | |
4791 | ||
e1ef7d7a PA |
4792 | /* Check that the name matching algorithm for completion doesn't get |
4793 | confused with Latin1 'ÿ' / 0xff. */ | |
4794 | { | |
4795 | static const char str[] = "\377"; | |
4796 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4797 | EXPECT ("\377", "\377\377123")); | |
4798 | } | |
4799 | ||
4800 | /* Check that the increment-last-char in the matching algorithm for | |
4801 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4802 | { | |
4803 | static const char str[] = "t1_func"; | |
4804 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4805 | EXPECT ("t1_func", "t1_func1")); | |
4806 | } | |
4807 | ||
c62446b1 PA |
4808 | /* Check that completion mode works at each prefix of the expected |
4809 | symbol name. */ | |
4810 | { | |
4811 | static const char str[] = "function(int)"; | |
4812 | size_t len = strlen (str); | |
4813 | std::string lookup; | |
4814 | ||
4815 | for (size_t i = 1; i < len; i++) | |
4816 | { | |
4817 | lookup.assign (str, i); | |
4818 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4819 | EXPECT ("function")); | |
4820 | } | |
4821 | } | |
4822 | ||
4823 | /* While "w" is a prefix of both components, the match function | |
4824 | should still only be called once. */ | |
4825 | { | |
4826 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4827 | EXPECT ("w1::w2")); | |
a20714ff PA |
4828 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4829 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4830 | } |
4831 | ||
4832 | /* Same, with a "complicated" symbol. */ | |
4833 | { | |
4834 | static const char str[] = Z_SYM_NAME; | |
4835 | size_t len = strlen (str); | |
4836 | std::string lookup; | |
4837 | ||
4838 | for (size_t i = 1; i < len; i++) | |
4839 | { | |
4840 | lookup.assign (str, i); | |
4841 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4842 | EXPECT (Z_SYM_NAME)); | |
4843 | } | |
4844 | } | |
4845 | ||
4846 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4847 | { | |
4848 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4849 | {}); | |
4850 | } | |
4851 | ||
4852 | /* A complete symbol with parameters matches any overload, since the | |
4853 | index has no overload info. */ | |
4854 | { | |
4855 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4856 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4857 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4858 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4859 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4860 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4861 | } |
4862 | ||
4863 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4864 | template argument list. */ | |
4865 | { | |
4866 | static const char expected[] = "ns::foo<int>"; | |
4867 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4868 | EXPECT (expected)); | |
a20714ff PA |
4869 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4870 | EXPECT (expected)); | |
c62446b1 PA |
4871 | } |
4872 | ||
4873 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4874 | template argument list that includes a pointer. */ | |
4875 | { | |
4876 | static const char expected[] = "ns::foo<char*>"; | |
4877 | /* Try both completion and non-completion modes. */ | |
4878 | static const bool completion_mode[2] = {false, true}; | |
4879 | for (size_t i = 0; i < 2; i++) | |
4880 | { | |
4881 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4882 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4883 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4884 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4885 | |
4886 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4887 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4888 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4889 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4890 | } |
4891 | } | |
4892 | ||
4893 | { | |
4894 | /* Check method qualifiers are ignored. */ | |
4895 | static const char expected[] = "ns::foo<char*>"; | |
4896 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4897 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4898 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4899 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4900 | CHECK_MATCH ("foo < char * > ( int ) const", |
4901 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4902 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4903 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4904 | } |
4905 | ||
4906 | /* Test lookup names that don't match anything. */ | |
4907 | { | |
a20714ff PA |
4908 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4909 | {}); | |
4910 | ||
c62446b1 PA |
4911 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4912 | {}); | |
4913 | } | |
4914 | ||
a20714ff PA |
4915 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4916 | which should not be confused with a parameter list. */ | |
4917 | { | |
4918 | static const char *syms[] = { | |
4919 | "A::B::C", | |
4920 | "B::C", | |
4921 | "C", | |
4922 | "A :: B :: C ( int )", | |
4923 | "B :: C ( int )", | |
4924 | "C ( int )", | |
4925 | }; | |
4926 | ||
4927 | for (const char *s : syms) | |
4928 | { | |
4929 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4930 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4931 | } | |
4932 | } | |
4933 | ||
4934 | { | |
4935 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4936 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4937 | EXPECT (expected)); | |
4938 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4939 | EXPECT (expected)); | |
4940 | } | |
4941 | ||
c62446b1 PA |
4942 | SELF_CHECK (!any_mismatch); |
4943 | ||
4944 | #undef EXPECT | |
4945 | #undef CHECK_MATCH | |
4946 | } | |
4947 | ||
5c58de74 PA |
4948 | static void |
4949 | run_test () | |
4950 | { | |
4951 | test_mapped_index_find_name_component_bounds (); | |
4952 | test_dw2_expand_symtabs_matching_symbol (); | |
4953 | } | |
4954 | ||
c62446b1 PA |
4955 | }} // namespace selftests::dw2_expand_symtabs_matching |
4956 | ||
4957 | #endif /* GDB_SELF_TEST */ | |
4958 | ||
4b514bc8 JK |
4959 | /* If FILE_MATCHER is NULL or if PER_CU has |
4960 | dwarf2_per_cu_quick_data::MARK set (see | |
4961 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4962 | EXPANSION_NOTIFY on it. */ | |
4963 | ||
4964 | static void | |
4965 | dw2_expand_symtabs_matching_one | |
4966 | (struct dwarf2_per_cu_data *per_cu, | |
4967 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4968 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4969 | { | |
4970 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4971 | { | |
4972 | bool symtab_was_null | |
4973 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4974 | ||
58f0c718 | 4975 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4976 | |
4977 | if (expansion_notify != NULL | |
4978 | && symtab_was_null | |
4979 | && per_cu->v.quick->compunit_symtab != NULL) | |
4980 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4981 | } | |
4982 | } | |
4983 | ||
3f563c84 PA |
4984 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4985 | matched, to expand corresponding CUs that were marked. IDX is the | |
4986 | index of the symbol name that matched. */ | |
4987 | ||
4988 | static void | |
4989 | dw2_expand_marked_cus | |
ed2dc618 | 4990 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4991 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4992 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4993 | search_domain kind) | |
4994 | { | |
3f563c84 PA |
4995 | offset_type *vec, vec_len, vec_idx; |
4996 | bool global_seen = false; | |
ed2dc618 | 4997 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4998 | |
61920122 | 4999 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5000 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5001 | vec_len = MAYBE_SWAP (vec[0]); |
5002 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5003 | { | |
61920122 PA |
5004 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5005 | /* This value is only valid for index versions >= 7. */ | |
5006 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5007 | gdb_index_symbol_kind symbol_kind = | |
5008 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5009 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5010 | /* Only check the symbol attributes if they're present. | |
5011 | Indices prior to version 7 don't record them, | |
5012 | and indices >= 7 may elide them for certain symbols | |
5013 | (gold does this). */ | |
5014 | int attrs_valid = | |
5015 | (index.version >= 7 | |
5016 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5017 | ||
5018 | /* Work around gold/15646. */ | |
5019 | if (attrs_valid) | |
9291a0cd | 5020 | { |
61920122 PA |
5021 | if (!is_static && global_seen) |
5022 | continue; | |
5023 | if (!is_static) | |
5024 | global_seen = true; | |
5025 | } | |
3190f0c6 | 5026 | |
61920122 PA |
5027 | /* Only check the symbol's kind if it has one. */ |
5028 | if (attrs_valid) | |
5029 | { | |
5030 | switch (kind) | |
8943b874 | 5031 | { |
61920122 PA |
5032 | case VARIABLES_DOMAIN: |
5033 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5034 | continue; | |
5035 | break; | |
5036 | case FUNCTIONS_DOMAIN: | |
5037 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5038 | continue; |
61920122 PA |
5039 | break; |
5040 | case TYPES_DOMAIN: | |
5041 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5042 | continue; | |
5043 | break; | |
5044 | default: | |
5045 | break; | |
8943b874 | 5046 | } |
61920122 | 5047 | } |
8943b874 | 5048 | |
61920122 | 5049 | /* Don't crash on bad data. */ |
b76e467d | 5050 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5051 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5052 | { |
b98664d3 | 5053 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5054 | " [in module %s]"), |
5055 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5056 | continue; |
5057 | } | |
5058 | ||
ff4c9fec | 5059 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5060 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5061 | expansion_notify); | |
61920122 PA |
5062 | } |
5063 | } | |
5064 | ||
4b514bc8 JK |
5065 | /* If FILE_MATCHER is non-NULL, set all the |
5066 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5067 | that match FILE_MATCHER. */ | |
5068 | ||
61920122 | 5069 | static void |
4b514bc8 | 5070 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5071 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5072 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5073 | { |
4b514bc8 | 5074 | if (file_matcher == NULL) |
61920122 PA |
5075 | return; |
5076 | ||
4b514bc8 JK |
5077 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5078 | ||
5079 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5080 | htab_eq_pointer, | |
5081 | NULL, xcalloc, xfree)); | |
5082 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5083 | htab_eq_pointer, |
5084 | NULL, xcalloc, xfree)); | |
61920122 | 5085 | |
4b514bc8 JK |
5086 | /* The rule is CUs specify all the files, including those used by |
5087 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5088 | |
b76e467d | 5089 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5090 | { |
927aa2e7 JK |
5091 | QUIT; |
5092 | ||
5093 | per_cu->v.quick->mark = 0; | |
5094 | ||
5095 | /* We only need to look at symtabs not already expanded. */ | |
5096 | if (per_cu->v.quick->compunit_symtab) | |
5097 | continue; | |
5098 | ||
b76e467d | 5099 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5100 | if (file_data == NULL) |
5101 | continue; | |
5102 | ||
5103 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5104 | continue; | |
5105 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5106 | { | |
5107 | per_cu->v.quick->mark = 1; | |
5108 | continue; | |
5109 | } | |
5110 | ||
b76e467d | 5111 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5112 | { |
5113 | const char *this_real_name; | |
5114 | ||
5115 | if (file_matcher (file_data->file_names[j], false)) | |
5116 | { | |
5117 | per_cu->v.quick->mark = 1; | |
5118 | break; | |
5119 | } | |
5120 | ||
5121 | /* Before we invoke realpath, which can get expensive when many | |
5122 | files are involved, do a quick comparison of the basenames. */ | |
5123 | if (!basenames_may_differ | |
5124 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5125 | true)) | |
5126 | continue; | |
5127 | ||
5128 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5129 | if (file_matcher (this_real_name, false)) | |
5130 | { | |
5131 | per_cu->v.quick->mark = 1; | |
5132 | break; | |
5133 | } | |
5134 | } | |
5135 | ||
b76e467d SM |
5136 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5137 | ? visited_found.get () | |
5138 | : visited_not_found.get (), | |
5139 | file_data, INSERT); | |
927aa2e7 JK |
5140 | *slot = file_data; |
5141 | } | |
5142 | } | |
5143 | ||
5144 | static void | |
5145 | dw2_expand_symtabs_matching | |
5146 | (struct objfile *objfile, | |
5147 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5148 | const lookup_name_info &lookup_name, | |
5149 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5150 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5151 | enum search_domain kind) | |
5152 | { | |
ed2dc618 SM |
5153 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5154 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5155 | |
5156 | /* index_table is NULL if OBJF_READNOW. */ | |
5157 | if (!dwarf2_per_objfile->index_table) | |
5158 | return; | |
5159 | ||
ed2dc618 | 5160 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5161 | |
5162 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5163 | ||
5164 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5165 | symbol_matcher, | |
5166 | kind, [&] (offset_type idx) | |
5167 | { | |
ed2dc618 | 5168 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 5169 | expansion_notify, kind); |
3b00ef10 | 5170 | return true; |
927aa2e7 JK |
5171 | }); |
5172 | } | |
5173 | ||
5174 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5175 | symtab. */ | |
5176 | ||
5177 | static struct compunit_symtab * | |
5178 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5179 | CORE_ADDR pc) | |
5180 | { | |
5181 | int i; | |
5182 | ||
5183 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5184 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5185 | return cust; | |
5186 | ||
5187 | if (cust->includes == NULL) | |
5188 | return NULL; | |
5189 | ||
5190 | for (i = 0; cust->includes[i]; ++i) | |
5191 | { | |
5192 | struct compunit_symtab *s = cust->includes[i]; | |
5193 | ||
5194 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5195 | if (s != NULL) | |
5196 | return s; | |
5197 | } | |
5198 | ||
5199 | return NULL; | |
5200 | } | |
5201 | ||
5202 | static struct compunit_symtab * | |
5203 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5204 | struct bound_minimal_symbol msymbol, | |
5205 | CORE_ADDR pc, | |
5206 | struct obj_section *section, | |
5207 | int warn_if_readin) | |
5208 | { | |
5209 | struct dwarf2_per_cu_data *data; | |
5210 | struct compunit_symtab *result; | |
5211 | ||
d320c2b5 | 5212 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5213 | return NULL; |
5214 | ||
79748972 TT |
5215 | CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, |
5216 | SECT_OFF_TEXT (objfile)); | |
d320c2b5 TT |
5217 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5218 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5219 | if (!data) |
5220 | return NULL; | |
5221 | ||
5222 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5223 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5224 | paddress (get_objfile_arch (objfile), pc)); | |
5225 | ||
5226 | result | |
58f0c718 TT |
5227 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5228 | false), | |
927aa2e7 JK |
5229 | pc); |
5230 | gdb_assert (result != NULL); | |
5231 | return result; | |
5232 | } | |
5233 | ||
5234 | static void | |
5235 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5236 | void *data, int need_fullname) | |
5237 | { | |
ed2dc618 SM |
5238 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5239 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5240 | |
5241 | if (!dwarf2_per_objfile->filenames_cache) | |
5242 | { | |
5243 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5244 | ||
5245 | htab_up visited (htab_create_alloc (10, | |
5246 | htab_hash_pointer, htab_eq_pointer, | |
5247 | NULL, xcalloc, xfree)); | |
5248 | ||
5249 | /* The rule is CUs specify all the files, including those used | |
5250 | by any TU, so there's no need to scan TUs here. We can | |
5251 | ignore file names coming from already-expanded CUs. */ | |
5252 | ||
b76e467d | 5253 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5254 | { |
927aa2e7 JK |
5255 | if (per_cu->v.quick->compunit_symtab) |
5256 | { | |
5257 | void **slot = htab_find_slot (visited.get (), | |
5258 | per_cu->v.quick->file_names, | |
5259 | INSERT); | |
5260 | ||
5261 | *slot = per_cu->v.quick->file_names; | |
5262 | } | |
5263 | } | |
5264 | ||
b76e467d | 5265 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5266 | { |
927aa2e7 JK |
5267 | /* We only need to look at symtabs not already expanded. */ |
5268 | if (per_cu->v.quick->compunit_symtab) | |
5269 | continue; | |
5270 | ||
b76e467d | 5271 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5272 | if (file_data == NULL) |
5273 | continue; | |
5274 | ||
b76e467d | 5275 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5276 | if (*slot) |
5277 | { | |
5278 | /* Already visited. */ | |
5279 | continue; | |
5280 | } | |
5281 | *slot = file_data; | |
5282 | ||
5283 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5284 | { | |
5285 | const char *filename = file_data->file_names[j]; | |
5286 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5287 | } | |
5288 | } | |
5289 | } | |
5290 | ||
5291 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5292 | { | |
5293 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5294 | ||
5295 | if (need_fullname) | |
5296 | this_real_name = gdb_realpath (filename); | |
5297 | (*fun) (filename, this_real_name.get (), data); | |
5298 | }); | |
5299 | } | |
5300 | ||
5301 | static int | |
5302 | dw2_has_symbols (struct objfile *objfile) | |
5303 | { | |
5304 | return 1; | |
5305 | } | |
5306 | ||
5307 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5308 | { | |
5309 | dw2_has_symbols, | |
5310 | dw2_find_last_source_symtab, | |
5311 | dw2_forget_cached_source_info, | |
5312 | dw2_map_symtabs_matching_filename, | |
5313 | dw2_lookup_symbol, | |
5314 | dw2_print_stats, | |
5315 | dw2_dump, | |
927aa2e7 JK |
5316 | dw2_expand_symtabs_for_function, |
5317 | dw2_expand_all_symtabs, | |
5318 | dw2_expand_symtabs_with_fullname, | |
5319 | dw2_map_matching_symbols, | |
5320 | dw2_expand_symtabs_matching, | |
5321 | dw2_find_pc_sect_compunit_symtab, | |
5322 | NULL, | |
5323 | dw2_map_symbol_filenames | |
5324 | }; | |
5325 | ||
5326 | /* DWARF-5 debug_names reader. */ | |
5327 | ||
5328 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5329 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5330 | ||
5331 | /* A helper function that reads the .debug_names section in SECTION | |
5332 | and fills in MAP. FILENAME is the name of the file containing the | |
5333 | section; it is used for error reporting. | |
5334 | ||
5335 | Returns true if all went well, false otherwise. */ | |
5336 | ||
5337 | static bool | |
5338 | read_debug_names_from_section (struct objfile *objfile, | |
5339 | const char *filename, | |
5340 | struct dwarf2_section_info *section, | |
5341 | mapped_debug_names &map) | |
5342 | { | |
5343 | if (dwarf2_section_empty_p (section)) | |
5344 | return false; | |
5345 | ||
5346 | /* Older elfutils strip versions could keep the section in the main | |
5347 | executable while splitting it for the separate debug info file. */ | |
5348 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5349 | return false; | |
5350 | ||
5351 | dwarf2_read_section (objfile, section); | |
5352 | ||
5353 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5354 | ||
5355 | const gdb_byte *addr = section->buffer; | |
5356 | ||
5357 | bfd *const abfd = get_section_bfd_owner (section); | |
5358 | ||
5359 | unsigned int bytes_read; | |
5360 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5361 | addr += bytes_read; | |
5362 | ||
5363 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5364 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5365 | if (bytes_read + length != section->size) | |
5366 | { | |
5367 | /* There may be multiple per-CU indices. */ | |
5368 | warning (_("Section .debug_names in %s length %s does not match " | |
5369 | "section length %s, ignoring .debug_names."), | |
5370 | filename, plongest (bytes_read + length), | |
5371 | pulongest (section->size)); | |
5372 | return false; | |
5373 | } | |
5374 | ||
5375 | /* The version number. */ | |
5376 | uint16_t version = read_2_bytes (abfd, addr); | |
5377 | addr += 2; | |
5378 | if (version != 5) | |
5379 | { | |
5380 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5381 | "ignoring .debug_names."), | |
5382 | filename, version); | |
5383 | return false; | |
5384 | } | |
5385 | ||
5386 | /* Padding. */ | |
5387 | uint16_t padding = read_2_bytes (abfd, addr); | |
5388 | addr += 2; | |
5389 | if (padding != 0) | |
5390 | { | |
5391 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5392 | "ignoring .debug_names."), | |
5393 | filename, padding); | |
5394 | return false; | |
5395 | } | |
5396 | ||
5397 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5398 | map.cu_count = read_4_bytes (abfd, addr); | |
5399 | addr += 4; | |
5400 | ||
5401 | /* local_type_unit_count - The number of TUs in the local TU | |
5402 | list. */ | |
5403 | map.tu_count = read_4_bytes (abfd, addr); | |
5404 | addr += 4; | |
5405 | ||
5406 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5407 | list. */ | |
5408 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5409 | addr += 4; | |
5410 | if (foreign_tu_count != 0) | |
5411 | { | |
5412 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5413 | "ignoring .debug_names."), | |
5414 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5415 | return false; | |
5416 | } | |
5417 | ||
5418 | /* bucket_count - The number of hash buckets in the hash lookup | |
5419 | table. */ | |
5420 | map.bucket_count = read_4_bytes (abfd, addr); | |
5421 | addr += 4; | |
5422 | ||
5423 | /* name_count - The number of unique names in the index. */ | |
5424 | map.name_count = read_4_bytes (abfd, addr); | |
5425 | addr += 4; | |
5426 | ||
5427 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5428 | table. */ | |
5429 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5430 | addr += 4; | |
5431 | ||
5432 | /* augmentation_string_size - The size in bytes of the augmentation | |
5433 | string. This value is rounded up to a multiple of 4. */ | |
5434 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5435 | addr += 4; | |
5436 | map.augmentation_is_gdb = ((augmentation_string_size | |
5437 | == sizeof (dwarf5_augmentation)) | |
5438 | && memcmp (addr, dwarf5_augmentation, | |
5439 | sizeof (dwarf5_augmentation)) == 0); | |
5440 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5441 | addr += augmentation_string_size; | |
5442 | ||
5443 | /* List of CUs */ | |
5444 | map.cu_table_reordered = addr; | |
5445 | addr += map.cu_count * map.offset_size; | |
5446 | ||
5447 | /* List of Local TUs */ | |
5448 | map.tu_table_reordered = addr; | |
5449 | addr += map.tu_count * map.offset_size; | |
5450 | ||
5451 | /* Hash Lookup Table */ | |
5452 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5453 | addr += map.bucket_count * 4; | |
5454 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5455 | addr += map.name_count * 4; | |
5456 | ||
5457 | /* Name Table */ | |
5458 | map.name_table_string_offs_reordered = addr; | |
5459 | addr += map.name_count * map.offset_size; | |
5460 | map.name_table_entry_offs_reordered = addr; | |
5461 | addr += map.name_count * map.offset_size; | |
5462 | ||
5463 | const gdb_byte *abbrev_table_start = addr; | |
5464 | for (;;) | |
5465 | { | |
927aa2e7 JK |
5466 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5467 | addr += bytes_read; | |
5468 | if (index_num == 0) | |
5469 | break; | |
5470 | ||
5471 | const auto insertpair | |
5472 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5473 | if (!insertpair.second) | |
5474 | { | |
5475 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5476 | "ignoring .debug_names."), | |
5477 | filename, pulongest (index_num)); | |
5478 | return false; | |
5479 | } | |
5480 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5481 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5482 | addr += bytes_read; | |
5483 | ||
5484 | for (;;) | |
5485 | { | |
5486 | mapped_debug_names::index_val::attr attr; | |
5487 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5488 | addr += bytes_read; | |
5489 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5490 | addr += bytes_read; | |
5491 | if (attr.form == DW_FORM_implicit_const) | |
5492 | { | |
5493 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5494 | &bytes_read); | |
5495 | addr += bytes_read; | |
5496 | } | |
5497 | if (attr.dw_idx == 0 && attr.form == 0) | |
5498 | break; | |
5499 | indexval.attr_vec.push_back (std::move (attr)); | |
5500 | } | |
5501 | } | |
5502 | if (addr != abbrev_table_start + abbrev_table_size) | |
5503 | { | |
5504 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5505 | "of size %s vs. written as %u, ignoring .debug_names."), |
5506 | filename, plongest (addr - abbrev_table_start), | |
5507 | abbrev_table_size); | |
927aa2e7 JK |
5508 | return false; |
5509 | } | |
5510 | map.entry_pool = addr; | |
5511 | ||
5512 | return true; | |
5513 | } | |
5514 | ||
5515 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5516 | list. */ | |
5517 | ||
5518 | static void | |
ed2dc618 | 5519 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5520 | const mapped_debug_names &map, |
5521 | dwarf2_section_info §ion, | |
b76e467d | 5522 | bool is_dwz) |
927aa2e7 JK |
5523 | { |
5524 | sect_offset sect_off_prev; | |
5525 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5526 | { | |
5527 | sect_offset sect_off_next; | |
5528 | if (i < map.cu_count) | |
5529 | { | |
5530 | sect_off_next | |
5531 | = (sect_offset) (extract_unsigned_integer | |
5532 | (map.cu_table_reordered + i * map.offset_size, | |
5533 | map.offset_size, | |
5534 | map.dwarf5_byte_order)); | |
5535 | } | |
5536 | else | |
5537 | sect_off_next = (sect_offset) section.size; | |
5538 | if (i >= 1) | |
5539 | { | |
5540 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5541 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5542 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5543 | sect_off_prev, length); |
b76e467d | 5544 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5545 | } |
5546 | sect_off_prev = sect_off_next; | |
5547 | } | |
5548 | } | |
5549 | ||
5550 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5551 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5552 | |
5553 | static void | |
ed2dc618 | 5554 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5555 | const mapped_debug_names &map, |
5556 | const mapped_debug_names &dwz_map) | |
5557 | { | |
b76e467d SM |
5558 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5559 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5560 | |
ed2dc618 SM |
5561 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5562 | dwarf2_per_objfile->info, | |
b76e467d | 5563 | false /* is_dwz */); |
927aa2e7 JK |
5564 | |
5565 | if (dwz_map.cu_count == 0) | |
5566 | return; | |
5567 | ||
ed2dc618 SM |
5568 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5569 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5570 | true /* is_dwz */); |
927aa2e7 JK |
5571 | } |
5572 | ||
5573 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5574 | elements of all the CUs and return true. Otherwise, return false. */ | |
5575 | ||
5576 | static bool | |
ed2dc618 | 5577 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5578 | { |
22ca247e TT |
5579 | std::unique_ptr<mapped_debug_names> map |
5580 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5581 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5582 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5583 | |
5584 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5585 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5586 | *map)) |
927aa2e7 JK |
5587 | return false; |
5588 | ||
5589 | /* Don't use the index if it's empty. */ | |
22ca247e | 5590 | if (map->name_count == 0) |
927aa2e7 JK |
5591 | return false; |
5592 | ||
5593 | /* If there is a .dwz file, read it so we can get its CU list as | |
5594 | well. */ | |
ed2dc618 | 5595 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5596 | if (dwz != NULL) |
5597 | { | |
5598 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5599 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5600 | &dwz->debug_names, dwz_map)) |
5601 | { | |
5602 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5603 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5604 | return false; |
5605 | } | |
5606 | } | |
5607 | ||
22ca247e | 5608 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5609 | |
22ca247e | 5610 | if (map->tu_count != 0) |
927aa2e7 JK |
5611 | { |
5612 | /* We can only handle a single .debug_types when we have an | |
5613 | index. */ | |
fd5866f6 | 5614 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5615 | return false; |
5616 | ||
fd5866f6 | 5617 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5618 | |
5619 | create_signatured_type_table_from_debug_names | |
22ca247e | 5620 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5621 | } |
5622 | ||
ed2dc618 SM |
5623 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5624 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5625 | |
22ca247e | 5626 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5627 | dwarf2_per_objfile->using_index = 1; |
5628 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5629 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5630 | |
5631 | return true; | |
5632 | } | |
5633 | ||
927aa2e7 JK |
5634 | /* Type used to manage iterating over all CUs looking for a symbol for |
5635 | .debug_names. */ | |
5636 | ||
5637 | class dw2_debug_names_iterator | |
5638 | { | |
5639 | public: | |
927aa2e7 | 5640 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5641 | gdb::optional<block_enum> block_index, |
5642 | domain_enum domain, | |
927aa2e7 | 5643 | const char *name) |
2b79f376 | 5644 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5645 | m_addr (find_vec_in_debug_names (map, name)) |
5646 | {} | |
5647 | ||
5648 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5649 | search_domain search, uint32_t namei) | |
5650 | : m_map (map), | |
5651 | m_search (search), | |
5652 | m_addr (find_vec_in_debug_names (map, namei)) | |
5653 | {} | |
5654 | ||
3b00ef10 TT |
5655 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5656 | block_enum block_index, domain_enum domain, | |
5657 | uint32_t namei) | |
5658 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5659 | m_addr (find_vec_in_debug_names (map, namei)) | |
5660 | {} | |
5661 | ||
927aa2e7 JK |
5662 | /* Return the next matching CU or NULL if there are no more. */ |
5663 | dwarf2_per_cu_data *next (); | |
5664 | ||
5665 | private: | |
5666 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5667 | const char *name); | |
5668 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5669 | uint32_t namei); | |
5670 | ||
5671 | /* The internalized form of .debug_names. */ | |
5672 | const mapped_debug_names &m_map; | |
5673 | ||
2b79f376 SM |
5674 | /* If set, only look for symbols that match that block. Valid values are |
5675 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5676 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5677 | |
5678 | /* The kind of symbol we're looking for. */ | |
5679 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5680 | const search_domain m_search = ALL_DOMAIN; | |
5681 | ||
5682 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5683 | not found. */ | |
5684 | const gdb_byte *m_addr; | |
5685 | }; | |
5686 | ||
5687 | const char * | |
5688 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5689 | { | |
5690 | const ULONGEST namei_string_offs | |
5691 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5692 | + namei * offset_size), | |
5693 | offset_size, | |
5694 | dwarf5_byte_order); | |
5695 | return read_indirect_string_at_offset | |
ed2dc618 | 5696 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5697 | } |
5698 | ||
5699 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5700 | found, return pointer to its pool data. If NAME cannot be found, | |
5701 | return NULL. */ | |
5702 | ||
5703 | const gdb_byte * | |
5704 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5705 | (const mapped_debug_names &map, const char *name) | |
5706 | { | |
5707 | int (*cmp) (const char *, const char *); | |
5708 | ||
54ee4252 | 5709 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5710 | if (current_language->la_language == language_cplus |
5711 | || current_language->la_language == language_fortran | |
5712 | || current_language->la_language == language_d) | |
5713 | { | |
5714 | /* NAME is already canonical. Drop any qualifiers as | |
5715 | .debug_names does not contain any. */ | |
5716 | ||
5717 | if (strchr (name, '(') != NULL) | |
5718 | { | |
54ee4252 | 5719 | without_params = cp_remove_params (name); |
927aa2e7 | 5720 | if (without_params != NULL) |
54ee4252 | 5721 | name = without_params.get (); |
927aa2e7 JK |
5722 | } |
5723 | } | |
5724 | ||
5725 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5726 | ||
5727 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5728 | uint32_t namei | |
5729 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5730 | (map.bucket_table_reordered | |
5731 | + (full_hash % map.bucket_count)), 4, | |
5732 | map.dwarf5_byte_order); | |
5733 | if (namei == 0) | |
5734 | return NULL; | |
5735 | --namei; | |
5736 | if (namei >= map.name_count) | |
5737 | { | |
b98664d3 | 5738 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5739 | "[in module %s]"), |
5740 | namei, map.name_count, | |
ed2dc618 | 5741 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5742 | return NULL; |
5743 | } | |
5744 | ||
5745 | for (;;) | |
5746 | { | |
5747 | const uint32_t namei_full_hash | |
5748 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5749 | (map.hash_table_reordered + namei), 4, | |
5750 | map.dwarf5_byte_order); | |
5751 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5752 | return NULL; | |
5753 | ||
5754 | if (full_hash == namei_full_hash) | |
5755 | { | |
5756 | const char *const namei_string = map.namei_to_name (namei); | |
5757 | ||
5758 | #if 0 /* An expensive sanity check. */ | |
5759 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5760 | { | |
b98664d3 | 5761 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5762 | "[in module %s]"), |
5763 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5764 | return NULL; | |
5765 | } | |
5766 | #endif | |
5767 | ||
5768 | if (cmp (namei_string, name) == 0) | |
5769 | { | |
5770 | const ULONGEST namei_entry_offs | |
5771 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5772 | + namei * map.offset_size), | |
5773 | map.offset_size, map.dwarf5_byte_order); | |
5774 | return map.entry_pool + namei_entry_offs; | |
5775 | } | |
5776 | } | |
5777 | ||
5778 | ++namei; | |
5779 | if (namei >= map.name_count) | |
5780 | return NULL; | |
5781 | } | |
5782 | } | |
5783 | ||
5784 | const gdb_byte * | |
5785 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5786 | (const mapped_debug_names &map, uint32_t namei) | |
5787 | { | |
5788 | if (namei >= map.name_count) | |
5789 | { | |
b98664d3 | 5790 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5791 | "[in module %s]"), |
5792 | namei, map.name_count, | |
ed2dc618 | 5793 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5794 | return NULL; |
5795 | } | |
5796 | ||
5797 | const ULONGEST namei_entry_offs | |
5798 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5799 | + namei * map.offset_size), | |
5800 | map.offset_size, map.dwarf5_byte_order); | |
5801 | return map.entry_pool + namei_entry_offs; | |
5802 | } | |
5803 | ||
5804 | /* See dw2_debug_names_iterator. */ | |
5805 | ||
5806 | dwarf2_per_cu_data * | |
5807 | dw2_debug_names_iterator::next () | |
5808 | { | |
5809 | if (m_addr == NULL) | |
5810 | return NULL; | |
5811 | ||
ed2dc618 SM |
5812 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5813 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5814 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5815 | |
5816 | again: | |
5817 | ||
5818 | unsigned int bytes_read; | |
5819 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5820 | m_addr += bytes_read; | |
5821 | if (abbrev == 0) | |
5822 | return NULL; | |
5823 | ||
5824 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5825 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5826 | { | |
b98664d3 | 5827 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5828 | "[in module %s]"), |
ed2dc618 | 5829 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5830 | return NULL; |
5831 | } | |
5832 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5833 | enum class symbol_linkage { |
5834 | unknown, | |
5835 | static_, | |
5836 | extern_, | |
23c13d42 | 5837 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5838 | dwarf2_per_cu_data *per_cu = NULL; |
5839 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5840 | { | |
5841 | ULONGEST ull; | |
5842 | switch (attr.form) | |
5843 | { | |
5844 | case DW_FORM_implicit_const: | |
5845 | ull = attr.implicit_const; | |
5846 | break; | |
5847 | case DW_FORM_flag_present: | |
5848 | ull = 1; | |
5849 | break; | |
5850 | case DW_FORM_udata: | |
5851 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5852 | m_addr += bytes_read; | |
5853 | break; | |
5854 | default: | |
b98664d3 | 5855 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5856 | dwarf_form_name (attr.form), |
ed2dc618 | 5857 | objfile_name (objfile)); |
927aa2e7 JK |
5858 | return NULL; |
5859 | } | |
5860 | switch (attr.dw_idx) | |
5861 | { | |
5862 | case DW_IDX_compile_unit: | |
5863 | /* Don't crash on bad data. */ | |
b76e467d | 5864 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5865 | { |
b98664d3 | 5866 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5867 | " [in module %s]"), |
5868 | pulongest (ull), | |
5869 | objfile_name (dwarf2_per_objfile->objfile)); | |
5870 | continue; | |
5871 | } | |
ff4c9fec | 5872 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5873 | break; |
8af5c486 JK |
5874 | case DW_IDX_type_unit: |
5875 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5876 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5877 | { |
b98664d3 | 5878 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5879 | " [in module %s]"), |
5880 | pulongest (ull), | |
5881 | objfile_name (dwarf2_per_objfile->objfile)); | |
5882 | continue; | |
5883 | } | |
ff4c9fec | 5884 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5885 | break; |
927aa2e7 JK |
5886 | case DW_IDX_GNU_internal: |
5887 | if (!m_map.augmentation_is_gdb) | |
5888 | break; | |
23c13d42 | 5889 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5890 | break; |
5891 | case DW_IDX_GNU_external: | |
5892 | if (!m_map.augmentation_is_gdb) | |
5893 | break; | |
23c13d42 | 5894 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5895 | break; |
5896 | } | |
5897 | } | |
5898 | ||
5899 | /* Skip if already read in. */ | |
5900 | if (per_cu->v.quick->compunit_symtab) | |
5901 | goto again; | |
5902 | ||
5903 | /* Check static vs global. */ | |
23c13d42 | 5904 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5905 | { |
2b79f376 | 5906 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5907 | const bool symbol_is_static = |
5908 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5909 | if (want_static != symbol_is_static) |
2b79f376 | 5910 | goto again; |
927aa2e7 JK |
5911 | } |
5912 | ||
5913 | /* Match dw2_symtab_iter_next, symbol_kind | |
5914 | and debug_names::psymbol_tag. */ | |
5915 | switch (m_domain) | |
5916 | { | |
5917 | case VAR_DOMAIN: | |
5918 | switch (indexval.dwarf_tag) | |
5919 | { | |
5920 | case DW_TAG_variable: | |
5921 | case DW_TAG_subprogram: | |
5922 | /* Some types are also in VAR_DOMAIN. */ | |
5923 | case DW_TAG_typedef: | |
5924 | case DW_TAG_structure_type: | |
5925 | break; | |
5926 | default: | |
5927 | goto again; | |
5928 | } | |
5929 | break; | |
5930 | case STRUCT_DOMAIN: | |
5931 | switch (indexval.dwarf_tag) | |
5932 | { | |
5933 | case DW_TAG_typedef: | |
5934 | case DW_TAG_structure_type: | |
5935 | break; | |
5936 | default: | |
5937 | goto again; | |
5938 | } | |
5939 | break; | |
5940 | case LABEL_DOMAIN: | |
5941 | switch (indexval.dwarf_tag) | |
5942 | { | |
5943 | case 0: | |
5944 | case DW_TAG_variable: | |
5945 | break; | |
5946 | default: | |
5947 | goto again; | |
5948 | } | |
5949 | break; | |
5950 | default: | |
5951 | break; | |
5952 | } | |
5953 | ||
5954 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5955 | debug_names::psymbol_tag. */ | |
5956 | switch (m_search) | |
4b514bc8 | 5957 | { |
927aa2e7 JK |
5958 | case VARIABLES_DOMAIN: |
5959 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5960 | { |
927aa2e7 JK |
5961 | case DW_TAG_variable: |
5962 | break; | |
5963 | default: | |
5964 | goto again; | |
4b514bc8 | 5965 | } |
927aa2e7 JK |
5966 | break; |
5967 | case FUNCTIONS_DOMAIN: | |
5968 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5969 | { |
927aa2e7 JK |
5970 | case DW_TAG_subprogram: |
5971 | break; | |
5972 | default: | |
5973 | goto again; | |
4b514bc8 | 5974 | } |
927aa2e7 JK |
5975 | break; |
5976 | case TYPES_DOMAIN: | |
5977 | switch (indexval.dwarf_tag) | |
5978 | { | |
5979 | case DW_TAG_typedef: | |
5980 | case DW_TAG_structure_type: | |
5981 | break; | |
5982 | default: | |
5983 | goto again; | |
5984 | } | |
5985 | break; | |
5986 | default: | |
5987 | break; | |
4b514bc8 | 5988 | } |
927aa2e7 JK |
5989 | |
5990 | return per_cu; | |
4b514bc8 | 5991 | } |
61920122 | 5992 | |
927aa2e7 | 5993 | static struct compunit_symtab * |
c7f839cb | 5994 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5995 | const char *name, domain_enum domain) |
4b514bc8 | 5996 | { |
ed2dc618 SM |
5997 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5998 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5999 | |
927aa2e7 JK |
6000 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6001 | if (!mapp) | |
61920122 | 6002 | { |
927aa2e7 JK |
6003 | /* index is NULL if OBJF_READNOW. */ |
6004 | return NULL; | |
6005 | } | |
6006 | const auto &map = *mapp; | |
9291a0cd | 6007 | |
2b79f376 | 6008 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 6009 | |
927aa2e7 JK |
6010 | struct compunit_symtab *stab_best = NULL; |
6011 | struct dwarf2_per_cu_data *per_cu; | |
6012 | while ((per_cu = iter.next ()) != NULL) | |
6013 | { | |
6014 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6015 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 6016 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 6017 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 6018 | |
927aa2e7 JK |
6019 | sym = block_find_symbol (block, name, domain, |
6020 | block_find_non_opaque_type_preferred, | |
6021 | &with_opaque); | |
9703b513 | 6022 | |
927aa2e7 JK |
6023 | /* Some caution must be observed with overloaded functions and |
6024 | methods, since the index will not contain any overload | |
6025 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6026 | |
927aa2e7 JK |
6027 | if (sym != NULL |
6028 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6029 | return stab; | |
6030 | if (with_opaque != NULL | |
6031 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6032 | stab_best = stab; | |
9703b513 | 6033 | |
927aa2e7 | 6034 | /* Keep looking through other CUs. */ |
9703b513 TT |
6035 | } |
6036 | ||
927aa2e7 | 6037 | return stab_best; |
9703b513 TT |
6038 | } |
6039 | ||
927aa2e7 JK |
6040 | /* This dumps minimal information about .debug_names. It is called |
6041 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6042 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6043 | |
927aa2e7 JK |
6044 | static void |
6045 | dw2_debug_names_dump (struct objfile *objfile) | |
6046 | { | |
ed2dc618 SM |
6047 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6048 | = get_dwarf2_per_objfile (objfile); | |
6049 | ||
927aa2e7 JK |
6050 | gdb_assert (dwarf2_per_objfile->using_index); |
6051 | printf_filtered (".debug_names:"); | |
6052 | if (dwarf2_per_objfile->debug_names_table) | |
6053 | printf_filtered (" exists\n"); | |
6054 | else | |
6055 | printf_filtered (" faked for \"readnow\"\n"); | |
6056 | printf_filtered ("\n"); | |
9291a0cd TT |
6057 | } |
6058 | ||
9291a0cd | 6059 | static void |
927aa2e7 JK |
6060 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6061 | const char *func_name) | |
9291a0cd | 6062 | { |
ed2dc618 SM |
6063 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6064 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6065 | |
927aa2e7 JK |
6066 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6067 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6068 | { |
927aa2e7 | 6069 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6070 | |
2b79f376 | 6071 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 6072 | |
927aa2e7 JK |
6073 | struct dwarf2_per_cu_data *per_cu; |
6074 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6075 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6076 | } |
6077 | } | |
24c79950 | 6078 | |
3b00ef10 TT |
6079 | static void |
6080 | dw2_debug_names_map_matching_symbols | |
6081 | (struct objfile *objfile, | |
6082 | const lookup_name_info &name, domain_enum domain, | |
6083 | int global, | |
6084 | gdb::function_view<symbol_found_callback_ftype> callback, | |
6085 | symbol_compare_ftype *ordered_compare) | |
6086 | { | |
6087 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
6088 | = get_dwarf2_per_objfile (objfile); | |
6089 | ||
6090 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
6091 | if (!dwarf2_per_objfile->debug_names_table) | |
6092 | return; | |
6093 | ||
6094 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
6095 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
6096 | ||
6097 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
6098 | auto matcher = [&] (const char *symname) | |
6099 | { | |
6100 | if (ordered_compare == nullptr) | |
6101 | return true; | |
6102 | return ordered_compare (symname, match_name) == 0; | |
6103 | }; | |
6104 | ||
6105 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
6106 | [&] (offset_type namei) | |
6107 | { | |
6108 | /* The name was matched, now expand corresponding CUs that were | |
6109 | marked. */ | |
6110 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
6111 | ||
6112 | struct dwarf2_per_cu_data *per_cu; | |
6113 | while ((per_cu = iter.next ()) != NULL) | |
6114 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
6115 | return true; | |
6116 | }); | |
6117 | ||
6118 | /* It's a shame we couldn't do this inside the | |
6119 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
6120 | that have already been expanded. Instead, this loop matches what | |
6121 | the psymtab code does. */ | |
6122 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
6123 | { | |
6124 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
6125 | if (cust != nullptr) | |
6126 | { | |
6127 | const struct block *block | |
6128 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
6129 | if (!iterate_over_symbols_terminated (block, name, | |
6130 | domain, callback)) | |
6131 | break; | |
6132 | } | |
6133 | } | |
6134 | } | |
6135 | ||
927aa2e7 JK |
6136 | static void |
6137 | dw2_debug_names_expand_symtabs_matching | |
6138 | (struct objfile *objfile, | |
6139 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6140 | const lookup_name_info &lookup_name, | |
6141 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6142 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6143 | enum search_domain kind) | |
6144 | { | |
ed2dc618 SM |
6145 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6146 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6147 | |
927aa2e7 JK |
6148 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6149 | if (!dwarf2_per_objfile->debug_names_table) | |
6150 | return; | |
9291a0cd | 6151 | |
ed2dc618 | 6152 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6153 | |
44ed8f3e | 6154 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6155 | |
44ed8f3e PA |
6156 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6157 | symbol_matcher, | |
6158 | kind, [&] (offset_type namei) | |
927aa2e7 | 6159 | { |
927aa2e7 JK |
6160 | /* The name was matched, now expand corresponding CUs that were |
6161 | marked. */ | |
6162 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6163 | |
927aa2e7 JK |
6164 | struct dwarf2_per_cu_data *per_cu; |
6165 | while ((per_cu = iter.next ()) != NULL) | |
6166 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6167 | expansion_notify); | |
3b00ef10 | 6168 | return true; |
44ed8f3e | 6169 | }); |
9291a0cd TT |
6170 | } |
6171 | ||
927aa2e7 | 6172 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6173 | { |
6174 | dw2_has_symbols, | |
6175 | dw2_find_last_source_symtab, | |
6176 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6177 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6178 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6179 | dw2_print_stats, |
927aa2e7 | 6180 | dw2_debug_names_dump, |
927aa2e7 | 6181 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6182 | dw2_expand_all_symtabs, |
652a8996 | 6183 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6184 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6185 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6186 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6187 | NULL, |
9291a0cd TT |
6188 | dw2_map_symbol_filenames |
6189 | }; | |
6190 | ||
4485a1c1 SM |
6191 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6192 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6193 | ||
6194 | template <typename T> | |
6195 | static gdb::array_view<const gdb_byte> | |
6196 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6197 | { | |
6198 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6199 | ||
6200 | if (dwarf2_section_empty_p (section)) | |
6201 | return {}; | |
6202 | ||
6203 | /* Older elfutils strip versions could keep the section in the main | |
6204 | executable while splitting it for the separate debug info file. */ | |
6205 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6206 | return {}; | |
6207 | ||
6208 | dwarf2_read_section (obj, section); | |
6209 | ||
8bebfcda PA |
6210 | /* dwarf2_section_info::size is a bfd_size_type, while |
6211 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6212 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6213 | is 32-bit. So we need an explicit narrowing conversion here. | |
6214 | This is fine, because it's impossible to allocate or mmap an | |
6215 | array/buffer larger than what size_t can represent. */ | |
6216 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6217 | } |
6218 | ||
87d6a7aa SM |
6219 | /* Lookup the index cache for the contents of the index associated to |
6220 | DWARF2_OBJ. */ | |
6221 | ||
6222 | static gdb::array_view<const gdb_byte> | |
6223 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6224 | { | |
6225 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6226 | if (build_id == nullptr) | |
6227 | return {}; | |
6228 | ||
6229 | return global_index_cache.lookup_gdb_index (build_id, | |
6230 | &dwarf2_obj->index_cache_res); | |
6231 | } | |
6232 | ||
6233 | /* Same as the above, but for DWZ. */ | |
6234 | ||
6235 | static gdb::array_view<const gdb_byte> | |
6236 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6237 | { | |
6238 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6239 | if (build_id == nullptr) | |
6240 | return {}; | |
6241 | ||
6242 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6243 | } | |
6244 | ||
3c0aa29a | 6245 | /* See symfile.h. */ |
9291a0cd | 6246 | |
3c0aa29a PA |
6247 | bool |
6248 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6249 | { |
ed2dc618 SM |
6250 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6251 | = get_dwarf2_per_objfile (objfile); | |
6252 | ||
9291a0cd TT |
6253 | /* If we're about to read full symbols, don't bother with the |
6254 | indices. In this case we also don't care if some other debug | |
6255 | format is making psymtabs, because they are all about to be | |
6256 | expanded anyway. */ | |
6257 | if ((objfile->flags & OBJF_READNOW)) | |
6258 | { | |
9291a0cd | 6259 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6260 | create_all_comp_units (dwarf2_per_objfile); |
6261 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6262 | dwarf2_per_objfile->quick_file_names_table |
6263 | = create_quick_file_names_table | |
6264 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6265 | |
b76e467d | 6266 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6267 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6268 | { |
ff4c9fec | 6269 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6270 | |
e254ef6a DE |
6271 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6272 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6273 | } |
6274 | ||
6275 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6276 | these functions will be no-ops because we will have expanded | |
6277 | all symtabs. */ | |
3c0aa29a PA |
6278 | *index_kind = dw_index_kind::GDB_INDEX; |
6279 | return true; | |
9291a0cd TT |
6280 | } |
6281 | ||
ed2dc618 | 6282 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6283 | { |
6284 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6285 | return true; | |
6286 | } | |
927aa2e7 | 6287 | |
4485a1c1 SM |
6288 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6289 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6290 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6291 | { |
6292 | *index_kind = dw_index_kind::GDB_INDEX; | |
6293 | return true; | |
6294 | } | |
9291a0cd | 6295 | |
87d6a7aa SM |
6296 | /* ... otherwise, try to find the index in the index cache. */ |
6297 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6298 | get_gdb_index_contents_from_cache, | |
6299 | get_gdb_index_contents_from_cache_dwz)) | |
6300 | { | |
6301 | global_index_cache.hit (); | |
6302 | *index_kind = dw_index_kind::GDB_INDEX; | |
6303 | return true; | |
6304 | } | |
6305 | ||
6306 | global_index_cache.miss (); | |
3c0aa29a | 6307 | return false; |
9291a0cd TT |
6308 | } |
6309 | ||
6310 | \f | |
6311 | ||
dce234bc PP |
6312 | /* Build a partial symbol table. */ |
6313 | ||
6314 | void | |
f29dff0a | 6315 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6316 | { |
ed2dc618 SM |
6317 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6318 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6319 | |
6eee24ce | 6320 | init_psymbol_list (objfile, 1024); |
c906108c | 6321 | |
a70b8144 | 6322 | try |
c9bf0622 TT |
6323 | { |
6324 | /* This isn't really ideal: all the data we allocate on the | |
6325 | objfile's obstack is still uselessly kept around. However, | |
6326 | freeing it seems unsafe. */ | |
906768f9 | 6327 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6328 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6329 | psymtabs.keep (); |
87d6a7aa SM |
6330 | |
6331 | /* (maybe) store an index in the cache. */ | |
6332 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6333 | } |
230d2906 | 6334 | catch (const gdb_exception_error &except) |
492d29ea PA |
6335 | { |
6336 | exception_print (gdb_stderr, except); | |
6337 | } | |
c906108c | 6338 | } |
c906108c | 6339 | |
1ce1cefd DE |
6340 | /* Return the total length of the CU described by HEADER. */ |
6341 | ||
6342 | static unsigned int | |
6343 | get_cu_length (const struct comp_unit_head *header) | |
6344 | { | |
6345 | return header->initial_length_size + header->length; | |
6346 | } | |
6347 | ||
9c541725 | 6348 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6349 | |
9c541725 PA |
6350 | static inline bool |
6351 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6352 | { |
9c541725 PA |
6353 | sect_offset bottom = cu_header->sect_off; |
6354 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6355 | |
9c541725 | 6356 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6357 | } |
6358 | ||
3b80fe9b DE |
6359 | /* Find the base address of the compilation unit for range lists and |
6360 | location lists. It will normally be specified by DW_AT_low_pc. | |
6361 | In DWARF-3 draft 4, the base address could be overridden by | |
6362 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6363 | compilation units with discontinuous ranges. */ | |
6364 | ||
6365 | static void | |
6366 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6367 | { | |
6368 | struct attribute *attr; | |
6369 | ||
6370 | cu->base_known = 0; | |
6371 | cu->base_address = 0; | |
6372 | ||
6373 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6374 | if (attr) | |
6375 | { | |
31aa7e4e | 6376 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6377 | cu->base_known = 1; |
6378 | } | |
6379 | else | |
6380 | { | |
6381 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6382 | if (attr) | |
6383 | { | |
31aa7e4e | 6384 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6385 | cu->base_known = 1; |
6386 | } | |
6387 | } | |
6388 | } | |
6389 | ||
93311388 | 6390 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6391 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6392 | NOTE: This leaves members offset, first_die_offset to be filled in |
6393 | by the caller. */ | |
107d2387 | 6394 | |
d521ce57 | 6395 | static const gdb_byte * |
107d2387 | 6396 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6397 | const gdb_byte *info_ptr, |
6398 | struct dwarf2_section_info *section, | |
6399 | rcuh_kind section_kind) | |
107d2387 AC |
6400 | { |
6401 | int signed_addr; | |
891d2f0b | 6402 | unsigned int bytes_read; |
43988095 JK |
6403 | const char *filename = get_section_file_name (section); |
6404 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6405 | |
6406 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6407 | cu_header->initial_length_size = bytes_read; | |
6408 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6409 | info_ptr += bytes_read; |
107d2387 | 6410 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6411 | if (cu_header->version < 2 || cu_header->version > 5) |
6412 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6413 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6414 | cu_header->version, filename); | |
107d2387 | 6415 | info_ptr += 2; |
43988095 JK |
6416 | if (cu_header->version < 5) |
6417 | switch (section_kind) | |
6418 | { | |
6419 | case rcuh_kind::COMPILE: | |
6420 | cu_header->unit_type = DW_UT_compile; | |
6421 | break; | |
6422 | case rcuh_kind::TYPE: | |
6423 | cu_header->unit_type = DW_UT_type; | |
6424 | break; | |
6425 | default: | |
6426 | internal_error (__FILE__, __LINE__, | |
6427 | _("read_comp_unit_head: invalid section_kind")); | |
6428 | } | |
6429 | else | |
6430 | { | |
6431 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6432 | (read_1_byte (abfd, info_ptr)); | |
6433 | info_ptr += 1; | |
6434 | switch (cu_header->unit_type) | |
6435 | { | |
6436 | case DW_UT_compile: | |
a084a2a6 AT |
6437 | case DW_UT_partial: |
6438 | case DW_UT_skeleton: | |
6439 | case DW_UT_split_compile: | |
43988095 JK |
6440 | if (section_kind != rcuh_kind::COMPILE) |
6441 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6442 | "(is %s, should be %s) [in module %s]"), |
6443 | dwarf_unit_type_name (cu_header->unit_type), | |
6444 | dwarf_unit_type_name (DW_UT_type), filename); | |
43988095 JK |
6445 | break; |
6446 | case DW_UT_type: | |
a084a2a6 | 6447 | case DW_UT_split_type: |
43988095 JK |
6448 | section_kind = rcuh_kind::TYPE; |
6449 | break; | |
6450 | default: | |
6451 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6452 | "(is %#04x, should be one of: %s, %s, %s, %s or %s) " |
6453 | "[in module %s]"), cu_header->unit_type, | |
6454 | dwarf_unit_type_name (DW_UT_compile), | |
6455 | dwarf_unit_type_name (DW_UT_skeleton), | |
6456 | dwarf_unit_type_name (DW_UT_split_compile), | |
6457 | dwarf_unit_type_name (DW_UT_type), | |
6458 | dwarf_unit_type_name (DW_UT_split_type), filename); | |
43988095 JK |
6459 | } |
6460 | ||
6461 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6462 | info_ptr += 1; | |
6463 | } | |
9c541725 PA |
6464 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6465 | cu_header, | |
6466 | &bytes_read); | |
613e1657 | 6467 | info_ptr += bytes_read; |
43988095 JK |
6468 | if (cu_header->version < 5) |
6469 | { | |
6470 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6471 | info_ptr += 1; | |
6472 | } | |
107d2387 AC |
6473 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6474 | if (signed_addr < 0) | |
8e65ff28 | 6475 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6476 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6477 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6478 | |
a084a2a6 AT |
6479 | bool header_has_signature = section_kind == rcuh_kind::TYPE |
6480 | || cu_header->unit_type == DW_UT_skeleton | |
6481 | || cu_header->unit_type == DW_UT_split_compile; | |
43988095 | 6482 | |
a084a2a6 AT |
6483 | if (header_has_signature) |
6484 | { | |
43988095 JK |
6485 | cu_header->signature = read_8_bytes (abfd, info_ptr); |
6486 | info_ptr += 8; | |
a084a2a6 | 6487 | } |
43988095 | 6488 | |
a084a2a6 AT |
6489 | if (section_kind == rcuh_kind::TYPE) |
6490 | { | |
6491 | LONGEST type_offset; | |
43988095 JK |
6492 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); |
6493 | info_ptr += bytes_read; | |
9c541725 PA |
6494 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6495 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6496 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6497 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6498 | filename); | |
6499 | } | |
6500 | ||
107d2387 AC |
6501 | return info_ptr; |
6502 | } | |
6503 | ||
36586728 TT |
6504 | /* Helper function that returns the proper abbrev section for |
6505 | THIS_CU. */ | |
6506 | ||
6507 | static struct dwarf2_section_info * | |
6508 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6509 | { | |
6510 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6511 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6512 | |
6513 | if (this_cu->is_dwz) | |
ed2dc618 | 6514 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6515 | else |
6516 | abbrev = &dwarf2_per_objfile->abbrev; | |
6517 | ||
6518 | return abbrev; | |
6519 | } | |
6520 | ||
9ff913ba DE |
6521 | /* Subroutine of read_and_check_comp_unit_head and |
6522 | read_and_check_type_unit_head to simplify them. | |
6523 | Perform various error checking on the header. */ | |
6524 | ||
6525 | static void | |
ed2dc618 SM |
6526 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6527 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6528 | struct dwarf2_section_info *section, |
6529 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6530 | { |
a32a8923 | 6531 | const char *filename = get_section_file_name (section); |
9ff913ba | 6532 | |
9c541725 | 6533 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6534 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6535 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6536 | "(offset %s + 6) [in module %s]"), | |
6537 | sect_offset_str (header->abbrev_sect_off), | |
6538 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6539 | filename); |
6540 | ||
9c541725 | 6541 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6542 | avoid potential 32-bit overflow. */ |
9c541725 | 6543 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6544 | > section->size) |
9c541725 | 6545 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6546 | "(offset %s + 0) [in module %s]"), |
6547 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6548 | filename); |
6549 | } | |
6550 | ||
6551 | /* Read in a CU/TU header and perform some basic error checking. | |
6552 | The contents of the header are stored in HEADER. | |
6553 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6554 | |
d521ce57 | 6555 | static const gdb_byte * |
ed2dc618 SM |
6556 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6557 | struct comp_unit_head *header, | |
9ff913ba | 6558 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6559 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6560 | const gdb_byte *info_ptr, |
43988095 | 6561 | rcuh_kind section_kind) |
72bf9492 | 6562 | { |
d521ce57 | 6563 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6564 | |
9c541725 | 6565 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6566 | |
43988095 | 6567 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6568 | |
9c541725 | 6569 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6570 | |
ed2dc618 SM |
6571 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6572 | abbrev_section); | |
9ff913ba DE |
6573 | |
6574 | return info_ptr; | |
348e048f DE |
6575 | } |
6576 | ||
f4dc4d17 DE |
6577 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6578 | ||
6579 | static sect_offset | |
ed2dc618 SM |
6580 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6581 | struct dwarf2_section_info *section, | |
9c541725 | 6582 | sect_offset sect_off) |
f4dc4d17 | 6583 | { |
a32a8923 | 6584 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6585 | const gdb_byte *info_ptr; |
ac298888 | 6586 | unsigned int initial_length_size, offset_size; |
43988095 | 6587 | uint16_t version; |
f4dc4d17 DE |
6588 | |
6589 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6590 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6591 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6592 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6593 | info_ptr += initial_length_size; |
6594 | ||
6595 | version = read_2_bytes (abfd, info_ptr); | |
6596 | info_ptr += 2; | |
6597 | if (version >= 5) | |
6598 | { | |
6599 | /* Skip unit type and address size. */ | |
6600 | info_ptr += 2; | |
6601 | } | |
6602 | ||
9c541725 | 6603 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6604 | } |
6605 | ||
aaa75496 JB |
6606 | /* Allocate a new partial symtab for file named NAME and mark this new |
6607 | partial symtab as being an include of PST. */ | |
6608 | ||
6609 | static void | |
d521ce57 | 6610 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6611 | struct objfile *objfile) |
6612 | { | |
6613 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6614 | ||
fbd9ab74 JK |
6615 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6616 | { | |
6617 | /* It shares objfile->objfile_obstack. */ | |
6618 | subpst->dirname = pst->dirname; | |
6619 | } | |
6620 | ||
a9342b62 | 6621 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6622 | subpst->dependencies[0] = pst; |
6623 | subpst->number_of_dependencies = 1; | |
6624 | ||
aaa75496 | 6625 | subpst->read_symtab = pst->read_symtab; |
aaa75496 JB |
6626 | |
6627 | /* No private part is necessary for include psymtabs. This property | |
6628 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6629 | the regular ones. */ |
58a9656e | 6630 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6631 | } |
6632 | ||
6633 | /* Read the Line Number Program data and extract the list of files | |
6634 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6635 | partial symtab for each of these included files. */ |
aaa75496 JB |
6636 | |
6637 | static void | |
6638 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6639 | struct die_info *die, |
6640 | struct partial_symtab *pst) | |
aaa75496 | 6641 | { |
fff8551c | 6642 | line_header_up lh; |
d85a05f0 | 6643 | struct attribute *attr; |
aaa75496 | 6644 | |
d85a05f0 DJ |
6645 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6646 | if (attr) | |
9c541725 | 6647 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6648 | if (lh == NULL) |
6649 | return; /* No linetable, so no includes. */ | |
6650 | ||
79748972 TT |
6651 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6652 | that we pass in the raw text_low here; that is ok because we're | |
6653 | only decoding the line table to make include partial symtabs, and | |
6654 | so the addresses aren't really used. */ | |
4ae976d1 | 6655 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6656 | pst->raw_text_low (), 1); |
aaa75496 JB |
6657 | } |
6658 | ||
348e048f | 6659 | static hashval_t |
52dc124a | 6660 | hash_signatured_type (const void *item) |
348e048f | 6661 | { |
9a3c8263 SM |
6662 | const struct signatured_type *sig_type |
6663 | = (const struct signatured_type *) item; | |
9a619af0 | 6664 | |
348e048f | 6665 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6666 | return sig_type->signature; |
348e048f DE |
6667 | } |
6668 | ||
6669 | static int | |
52dc124a | 6670 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6671 | { |
9a3c8263 SM |
6672 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6673 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6674 | |
348e048f DE |
6675 | return lhs->signature == rhs->signature; |
6676 | } | |
6677 | ||
1fd400ff TT |
6678 | /* Allocate a hash table for signatured types. */ |
6679 | ||
6680 | static htab_t | |
673bfd45 | 6681 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6682 | { |
6683 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6684 | hash_signatured_type, |
6685 | eq_signatured_type, | |
1fd400ff TT |
6686 | NULL, |
6687 | &objfile->objfile_obstack, | |
6688 | hashtab_obstack_allocate, | |
6689 | dummy_obstack_deallocate); | |
6690 | } | |
6691 | ||
d467dd73 | 6692 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6693 | |
6694 | static int | |
d467dd73 | 6695 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6696 | { |
9a3c8263 | 6697 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6698 | std::vector<signatured_type *> *all_type_units |
6699 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6700 | |
b2bdb8cf | 6701 | all_type_units->push_back (sigt); |
1fd400ff TT |
6702 | |
6703 | return 1; | |
6704 | } | |
6705 | ||
78d4d2c5 | 6706 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6707 | and fill them into TYPES_HTAB. It will process only type units, |
6708 | therefore DW_UT_type. */ | |
c88ee1f0 | 6709 | |
78d4d2c5 | 6710 | static void |
ed2dc618 SM |
6711 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6712 | struct dwo_file *dwo_file, | |
43988095 JK |
6713 | dwarf2_section_info *section, htab_t &types_htab, |
6714 | rcuh_kind section_kind) | |
348e048f | 6715 | { |
3019eac3 | 6716 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6717 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6718 | bfd *abfd; |
6719 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6720 | |
4bdcc0c1 DE |
6721 | abbrev_section = (dwo_file != NULL |
6722 | ? &dwo_file->sections.abbrev | |
6723 | : &dwarf2_per_objfile->abbrev); | |
6724 | ||
b4f54984 | 6725 | if (dwarf_read_debug) |
43988095 JK |
6726 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6727 | get_section_name (section), | |
a32a8923 | 6728 | get_section_file_name (abbrev_section)); |
09406207 | 6729 | |
78d4d2c5 JK |
6730 | dwarf2_read_section (objfile, section); |
6731 | info_ptr = section->buffer; | |
348e048f | 6732 | |
78d4d2c5 JK |
6733 | if (info_ptr == NULL) |
6734 | return; | |
348e048f | 6735 | |
78d4d2c5 JK |
6736 | /* We can't set abfd until now because the section may be empty or |
6737 | not present, in which case the bfd is unknown. */ | |
6738 | abfd = get_section_bfd_owner (section); | |
348e048f | 6739 | |
78d4d2c5 JK |
6740 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6741 | because we don't need to read any dies: the signature is in the | |
6742 | header. */ | |
3019eac3 | 6743 | |
78d4d2c5 JK |
6744 | end_ptr = info_ptr + section->size; |
6745 | while (info_ptr < end_ptr) | |
6746 | { | |
78d4d2c5 JK |
6747 | struct signatured_type *sig_type; |
6748 | struct dwo_unit *dwo_tu; | |
6749 | void **slot; | |
6750 | const gdb_byte *ptr = info_ptr; | |
6751 | struct comp_unit_head header; | |
6752 | unsigned int length; | |
8b70b953 | 6753 | |
9c541725 | 6754 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6755 | |
a49dd8dd JK |
6756 | /* Initialize it due to a false compiler warning. */ |
6757 | header.signature = -1; | |
9c541725 | 6758 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6759 | |
78d4d2c5 JK |
6760 | /* We need to read the type's signature in order to build the hash |
6761 | table, but we don't need anything else just yet. */ | |
348e048f | 6762 | |
ed2dc618 | 6763 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6764 | abbrev_section, ptr, section_kind); |
348e048f | 6765 | |
78d4d2c5 | 6766 | length = get_cu_length (&header); |
6caca83c | 6767 | |
78d4d2c5 JK |
6768 | /* Skip dummy type units. */ |
6769 | if (ptr >= info_ptr + length | |
43988095 JK |
6770 | || peek_abbrev_code (abfd, ptr) == 0 |
6771 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6772 | { |
6773 | info_ptr += length; | |
6774 | continue; | |
6775 | } | |
dee91e82 | 6776 | |
78d4d2c5 JK |
6777 | if (types_htab == NULL) |
6778 | { | |
6779 | if (dwo_file) | |
6780 | types_htab = allocate_dwo_unit_table (objfile); | |
6781 | else | |
6782 | types_htab = allocate_signatured_type_table (objfile); | |
6783 | } | |
8b70b953 | 6784 | |
78d4d2c5 JK |
6785 | if (dwo_file) |
6786 | { | |
6787 | sig_type = NULL; | |
6788 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6789 | struct dwo_unit); | |
6790 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6791 | dwo_tu->signature = header.signature; |
9c541725 | 6792 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6793 | dwo_tu->section = section; |
9c541725 | 6794 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6795 | dwo_tu->length = length; |
6796 | } | |
6797 | else | |
6798 | { | |
6799 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6800 | The real type_offset is in the DWO file. */ | |
6801 | dwo_tu = NULL; | |
6802 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6803 | struct signatured_type); | |
43988095 | 6804 | sig_type->signature = header.signature; |
9c541725 | 6805 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6806 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6807 | sig_type->per_cu.is_debug_types = 1; |
6808 | sig_type->per_cu.section = section; | |
9c541725 | 6809 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6810 | sig_type->per_cu.length = length; |
6811 | } | |
6812 | ||
6813 | slot = htab_find_slot (types_htab, | |
6814 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6815 | INSERT); | |
6816 | gdb_assert (slot != NULL); | |
6817 | if (*slot != NULL) | |
6818 | { | |
9c541725 | 6819 | sect_offset dup_sect_off; |
0349ea22 | 6820 | |
3019eac3 DE |
6821 | if (dwo_file) |
6822 | { | |
78d4d2c5 JK |
6823 | const struct dwo_unit *dup_tu |
6824 | = (const struct dwo_unit *) *slot; | |
6825 | ||
9c541725 | 6826 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6827 | } |
6828 | else | |
6829 | { | |
78d4d2c5 JK |
6830 | const struct signatured_type *dup_tu |
6831 | = (const struct signatured_type *) *slot; | |
6832 | ||
9c541725 | 6833 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6834 | } |
8b70b953 | 6835 | |
b98664d3 | 6836 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6837 | " the entry at offset %s, signature %s"), |
6838 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6839 | hex_string (header.signature)); |
78d4d2c5 JK |
6840 | } |
6841 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6842 | |
78d4d2c5 | 6843 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6844 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6845 | sect_offset_str (sect_off), | |
43988095 | 6846 | hex_string (header.signature)); |
3019eac3 | 6847 | |
78d4d2c5 JK |
6848 | info_ptr += length; |
6849 | } | |
6850 | } | |
3019eac3 | 6851 | |
78d4d2c5 JK |
6852 | /* Create the hash table of all entries in the .debug_types |
6853 | (or .debug_types.dwo) section(s). | |
6854 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6855 | otherwise it is NULL. | |
b3c8eb43 | 6856 | |
78d4d2c5 | 6857 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6858 | |
78d4d2c5 | 6859 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6860 | |
78d4d2c5 | 6861 | static void |
ed2dc618 SM |
6862 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6863 | struct dwo_file *dwo_file, | |
fd5866f6 | 6864 | gdb::array_view<dwarf2_section_info> type_sections, |
78d4d2c5 JK |
6865 | htab_t &types_htab) |
6866 | { | |
fd5866f6 SM |
6867 | for (dwarf2_section_info §ion : type_sections) |
6868 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6869 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6870 | } |
6871 | ||
6872 | /* Create the hash table of all entries in the .debug_types section, | |
6873 | and initialize all_type_units. | |
6874 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6875 | otherwise non-zero. */ | |
6876 | ||
6877 | static int | |
ed2dc618 | 6878 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6879 | { |
78d4d2c5 | 6880 | htab_t types_htab = NULL; |
3019eac3 | 6881 | |
ed2dc618 SM |
6882 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6883 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6884 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6885 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6886 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6887 | if (types_htab == NULL) |
6888 | { | |
6889 | dwarf2_per_objfile->signatured_types = NULL; | |
6890 | return 0; | |
6891 | } | |
6892 | ||
348e048f DE |
6893 | dwarf2_per_objfile->signatured_types = types_htab; |
6894 | ||
b2bdb8cf SM |
6895 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6896 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6897 | ||
6898 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6899 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6900 | |
348e048f DE |
6901 | return 1; |
6902 | } | |
6903 | ||
6aa5f3a6 DE |
6904 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6905 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6906 | Otherwise we find one. */ | |
6907 | ||
6908 | static struct signatured_type * | |
ed2dc618 SM |
6909 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6910 | void **slot) | |
6aa5f3a6 DE |
6911 | { |
6912 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6913 | |
b2bdb8cf SM |
6914 | if (dwarf2_per_objfile->all_type_units.size () |
6915 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6916 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6917 | |
b2bdb8cf SM |
6918 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6919 | struct signatured_type); | |
6920 | ||
6921 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6922 | sig_type->signature = sig; |
6923 | sig_type->per_cu.is_debug_types = 1; | |
6924 | if (dwarf2_per_objfile->using_index) | |
6925 | { | |
6926 | sig_type->per_cu.v.quick = | |
6927 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6928 | struct dwarf2_per_cu_quick_data); | |
6929 | } | |
6930 | ||
6931 | if (slot == NULL) | |
6932 | { | |
6933 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6934 | sig_type, INSERT); | |
6935 | } | |
6936 | gdb_assert (*slot == NULL); | |
6937 | *slot = sig_type; | |
6938 | /* The rest of sig_type must be filled in by the caller. */ | |
6939 | return sig_type; | |
6940 | } | |
6941 | ||
a2ce51a0 DE |
6942 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6943 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6944 | ||
6945 | static void | |
ed2dc618 | 6946 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6947 | struct signatured_type *sig_entry, |
6948 | struct dwo_unit *dwo_entry) | |
6949 | { | |
7ee85ab1 | 6950 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6951 | gdb_assert (! sig_entry->per_cu.queued); |
6952 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6953 | if (dwarf2_per_objfile->using_index) |
6954 | { | |
6955 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6956 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6957 | } |
6958 | else | |
6959 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6960 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6961 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6962 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6963 | gdb_assert (sig_entry->dwo_unit == NULL); |
6964 | ||
6965 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6966 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6967 | sig_entry->per_cu.length = dwo_entry->length; |
6968 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6969 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6970 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6971 | sig_entry->dwo_unit = dwo_entry; | |
6972 | } | |
6973 | ||
6974 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6975 | If we haven't read the TU yet, create the signatured_type data structure |
6976 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6977 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6978 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6979 | containing that CU. Otherwise we could end up reading several other DWO | |
6980 | files (due to comdat folding) to process the transitive closure of all the | |
6981 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6982 | type signature that it needs. | |
a2ce51a0 DE |
6983 | We only do this for .gdb_index because in the psymtab case we already have |
6984 | to read all the DWOs to build the type unit groups. */ | |
6985 | ||
6986 | static struct signatured_type * | |
6987 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6988 | { | |
518817b3 SM |
6989 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6990 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6991 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6992 | struct dwo_file *dwo_file; | |
6993 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6994 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6995 | void **slot; |
a2ce51a0 DE |
6996 | |
6997 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6998 | ||
6aa5f3a6 DE |
6999 | /* If TU skeletons have been removed then we may not have read in any |
7000 | TUs yet. */ | |
7001 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7002 | { | |
7003 | dwarf2_per_objfile->signatured_types | |
7004 | = allocate_signatured_type_table (objfile); | |
7005 | } | |
a2ce51a0 DE |
7006 | |
7007 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7008 | Use the global signatured_types array to do our own comdat-folding |
7009 | of types. If this is the first time we're reading this TU, and | |
7010 | the TU has an entry in .gdb_index, replace the recorded data from | |
7011 | .gdb_index with this TU. */ | |
a2ce51a0 | 7012 | |
a2ce51a0 | 7013 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7014 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7015 | &find_sig_entry, INSERT); | |
9a3c8263 | 7016 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7017 | |
7018 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7019 | read. Don't reassign the global entry to point to this DWO if that's |
7020 | the case. Also note that if the TU is already being read, it may not | |
7021 | have come from a DWO, the program may be a mix of Fission-compiled | |
7022 | code and non-Fission-compiled code. */ | |
7023 | ||
7024 | /* Have we already tried to read this TU? | |
7025 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7026 | needn't exist in the global table yet). */ | |
7027 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7028 | return sig_entry; |
7029 | ||
6aa5f3a6 DE |
7030 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7031 | dwo_unit of the TU itself. */ | |
7032 | dwo_file = cu->dwo_unit->dwo_file; | |
7033 | ||
a2ce51a0 DE |
7034 | /* Ok, this is the first time we're reading this TU. */ |
7035 | if (dwo_file->tus == NULL) | |
7036 | return NULL; | |
7037 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7038 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7039 | if (dwo_entry == NULL) |
7040 | return NULL; | |
7041 | ||
6aa5f3a6 DE |
7042 | /* If the global table doesn't have an entry for this TU, add one. */ |
7043 | if (sig_entry == NULL) | |
ed2dc618 | 7044 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7045 | |
ed2dc618 | 7046 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7047 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7048 | return sig_entry; |
7049 | } | |
7050 | ||
a2ce51a0 DE |
7051 | /* Subroutine of lookup_signatured_type. |
7052 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7053 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7054 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7055 | |
7056 | static struct signatured_type * | |
7057 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7058 | { | |
518817b3 SM |
7059 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7060 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7061 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7062 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7063 | struct dwo_unit *dwo_entry; |
7064 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7065 | void **slot; |
a2ce51a0 DE |
7066 | |
7067 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7068 | gdb_assert (dwp_file != NULL); | |
7069 | ||
6aa5f3a6 DE |
7070 | /* If TU skeletons have been removed then we may not have read in any |
7071 | TUs yet. */ | |
7072 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7073 | { |
6aa5f3a6 DE |
7074 | dwarf2_per_objfile->signatured_types |
7075 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7076 | } |
7077 | ||
6aa5f3a6 DE |
7078 | find_sig_entry.signature = sig; |
7079 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7080 | &find_sig_entry, INSERT); | |
9a3c8263 | 7081 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7082 | |
7083 | /* Have we already tried to read this TU? | |
7084 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7085 | needn't exist in the global table yet). */ | |
7086 | if (sig_entry != NULL) | |
7087 | return sig_entry; | |
7088 | ||
a2ce51a0 DE |
7089 | if (dwp_file->tus == NULL) |
7090 | return NULL; | |
ed2dc618 | 7091 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7092 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7093 | if (dwo_entry == NULL) |
7094 | return NULL; | |
7095 | ||
ed2dc618 SM |
7096 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7097 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7098 | |
a2ce51a0 DE |
7099 | return sig_entry; |
7100 | } | |
7101 | ||
380bca97 | 7102 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7103 | Returns NULL if signature SIG is not present in the table. |
7104 | It is up to the caller to complain about this. */ | |
348e048f DE |
7105 | |
7106 | static struct signatured_type * | |
a2ce51a0 | 7107 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7108 | { |
518817b3 SM |
7109 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7110 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7111 | |
a2ce51a0 DE |
7112 | if (cu->dwo_unit |
7113 | && dwarf2_per_objfile->using_index) | |
7114 | { | |
7115 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7116 | These cases require special processing. */ | |
ed2dc618 | 7117 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7118 | return lookup_dwo_signatured_type (cu, sig); |
7119 | else | |
7120 | return lookup_dwp_signatured_type (cu, sig); | |
7121 | } | |
7122 | else | |
7123 | { | |
7124 | struct signatured_type find_entry, *entry; | |
348e048f | 7125 | |
a2ce51a0 DE |
7126 | if (dwarf2_per_objfile->signatured_types == NULL) |
7127 | return NULL; | |
7128 | find_entry.signature = sig; | |
9a3c8263 SM |
7129 | entry = ((struct signatured_type *) |
7130 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7131 | return entry; |
7132 | } | |
348e048f | 7133 | } |
42e7ad6c DE |
7134 | \f |
7135 | /* Low level DIE reading support. */ | |
348e048f | 7136 | |
d85a05f0 DJ |
7137 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7138 | ||
7139 | static void | |
7140 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7141 | struct dwarf2_cu *cu, |
3019eac3 | 7142 | struct dwarf2_section_info *section, |
685af9cd TT |
7143 | struct dwo_file *dwo_file, |
7144 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7145 | { |
fceca515 | 7146 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7147 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7148 | reader->cu = cu; |
3019eac3 | 7149 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7150 | reader->die_section = section; |
7151 | reader->buffer = section->buffer; | |
f664829e | 7152 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7153 | reader->comp_dir = NULL; |
685af9cd | 7154 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7155 | } |
7156 | ||
b0c7bfa9 DE |
7157 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7158 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7159 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7160 | already. | |
7161 | ||
7162 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7163 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7164 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7165 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7166 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7167 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7168 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7169 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7170 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7171 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7172 | kept around for at least as long as *RESULT_READER. | |
7173 | ||
b0c7bfa9 DE |
7174 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7175 | ||
7176 | static int | |
7177 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7178 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7179 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7180 | const char *stub_comp_dir, |
b0c7bfa9 | 7181 | struct die_reader_specs *result_reader, |
d521ce57 | 7182 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7183 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7184 | int *result_has_children, |
7185 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7186 | { |
ed2dc618 | 7187 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7188 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7189 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7190 | bfd *abfd; |
d521ce57 | 7191 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7192 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7193 | int i,num_extra_attrs; | |
7194 | struct dwarf2_section_info *dwo_abbrev_section; | |
7195 | struct attribute *attr; | |
7196 | struct die_info *comp_unit_die; | |
7197 | ||
b0aeadb3 DE |
7198 | /* At most one of these may be provided. */ |
7199 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7200 | |
b0c7bfa9 DE |
7201 | /* These attributes aren't processed until later: |
7202 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7203 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7204 | referenced later. However, these attributes are found in the stub | |
7205 | which we won't have later. In order to not impose this complication | |
7206 | on the rest of the code, we read them here and copy them to the | |
7207 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7208 | |
7209 | stmt_list = NULL; | |
7210 | low_pc = NULL; | |
7211 | high_pc = NULL; | |
7212 | ranges = NULL; | |
7213 | comp_dir = NULL; | |
7214 | ||
7215 | if (stub_comp_unit_die != NULL) | |
7216 | { | |
7217 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7218 | DWO file. */ | |
7219 | if (! this_cu->is_debug_types) | |
7220 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7221 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7222 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7223 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7224 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7225 | ||
7226 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
336d760d AT |
7227 | We need the value before we can process DW_FORM_GNU_addr_index |
7228 | or DW_FORM_addrx. */ | |
b0c7bfa9 DE |
7229 | cu->addr_base = 0; |
7230 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7231 | if (attr) | |
7232 | cu->addr_base = DW_UNSND (attr); | |
7233 | ||
7234 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7235 | We need the value before we can process DW_AT_ranges. */ | |
7236 | cu->ranges_base = 0; | |
7237 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7238 | if (attr) | |
7239 | cu->ranges_base = DW_UNSND (attr); | |
7240 | } | |
a2ce51a0 DE |
7241 | else if (stub_comp_dir != NULL) |
7242 | { | |
7243 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7244 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7245 | comp_dir->name = DW_AT_comp_dir; |
7246 | comp_dir->form = DW_FORM_string; | |
7247 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7248 | DW_STRING (comp_dir) = stub_comp_dir; | |
7249 | } | |
b0c7bfa9 DE |
7250 | |
7251 | /* Set up for reading the DWO CU/TU. */ | |
7252 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7253 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7254 | dwarf2_read_section (objfile, section); |
a32a8923 | 7255 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7256 | begin_info_ptr = info_ptr = (section->buffer |
7257 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7258 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7259 | |
7260 | if (this_cu->is_debug_types) | |
7261 | { | |
b0c7bfa9 DE |
7262 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7263 | ||
ed2dc618 SM |
7264 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7265 | &cu->header, section, | |
b0c7bfa9 | 7266 | dwo_abbrev_section, |
43988095 | 7267 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7268 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7269 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7270 | { |
7271 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7272 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7273 | hex_string (sig_type->signature), |
43988095 | 7274 | hex_string (cu->header.signature), |
9d8780f0 | 7275 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7276 | bfd_get_filename (abfd)); |
7277 | } | |
9c541725 | 7278 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7279 | /* For DWOs coming from DWP files, we don't know the CU length |
7280 | nor the type's offset in the TU until now. */ | |
7281 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7282 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7283 | |
7284 | /* Establish the type offset that can be used to lookup the type. | |
7285 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7286 | sig_type->type_offset_in_section |
7287 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7288 | } |
7289 | else | |
7290 | { | |
ed2dc618 SM |
7291 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7292 | &cu->header, section, | |
b0c7bfa9 | 7293 | dwo_abbrev_section, |
43988095 | 7294 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7295 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7296 | /* For DWOs coming from DWP files, we don't know the CU length |
7297 | until now. */ | |
7298 | dwo_unit->length = get_cu_length (&cu->header); | |
7299 | } | |
7300 | ||
685af9cd TT |
7301 | *result_dwo_abbrev_table |
7302 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7303 | cu->header.abbrev_sect_off); | |
7304 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7305 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7306 | |
7307 | /* Read in the die, but leave space to copy over the attributes | |
7308 | from the stub. This has the benefit of simplifying the rest of | |
7309 | the code - all the work to maintain the illusion of a single | |
7310 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7311 | num_extra_attrs = ((stmt_list != NULL) | |
7312 | + (low_pc != NULL) | |
7313 | + (high_pc != NULL) | |
7314 | + (ranges != NULL) | |
7315 | + (comp_dir != NULL)); | |
7316 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7317 | result_has_children, num_extra_attrs); | |
7318 | ||
7319 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7320 | comp_unit_die = *result_comp_unit_die; | |
7321 | i = comp_unit_die->num_attrs; | |
7322 | if (stmt_list != NULL) | |
7323 | comp_unit_die->attrs[i++] = *stmt_list; | |
7324 | if (low_pc != NULL) | |
7325 | comp_unit_die->attrs[i++] = *low_pc; | |
7326 | if (high_pc != NULL) | |
7327 | comp_unit_die->attrs[i++] = *high_pc; | |
7328 | if (ranges != NULL) | |
7329 | comp_unit_die->attrs[i++] = *ranges; | |
7330 | if (comp_dir != NULL) | |
7331 | comp_unit_die->attrs[i++] = *comp_dir; | |
7332 | comp_unit_die->num_attrs += num_extra_attrs; | |
7333 | ||
b4f54984 | 7334 | if (dwarf_die_debug) |
bf6af496 DE |
7335 | { |
7336 | fprintf_unfiltered (gdb_stdlog, | |
7337 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7338 | get_section_name (section), |
bf6af496 DE |
7339 | (unsigned) (begin_info_ptr - section->buffer), |
7340 | bfd_get_filename (abfd)); | |
b4f54984 | 7341 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7342 | } |
7343 | ||
a2ce51a0 DE |
7344 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7345 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7346 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7347 | to get it via circuitous means. Blech. */ | |
7348 | if (comp_dir != NULL) | |
7349 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7350 | ||
b0c7bfa9 DE |
7351 | /* Skip dummy compilation units. */ |
7352 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7353 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7354 | return 0; | |
7355 | ||
7356 | *result_info_ptr = info_ptr; | |
7357 | return 1; | |
7358 | } | |
7359 | ||
a084a2a6 AT |
7360 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7361 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7362 | signature is part of the header. */ | |
7363 | static gdb::optional<ULONGEST> | |
7364 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7365 | { | |
7366 | if (cu->header.version >= 5) | |
7367 | return cu->header.signature; | |
7368 | struct attribute *attr; | |
7369 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7370 | if (attr == nullptr) | |
7371 | return gdb::optional<ULONGEST> (); | |
7372 | return DW_UNSND (attr); | |
7373 | } | |
7374 | ||
b0c7bfa9 DE |
7375 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7376 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7377 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7378 | |
7379 | static struct dwo_unit * | |
7380 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7381 | struct die_info *comp_unit_die) | |
7382 | { | |
7383 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7384 | struct dwo_unit *dwo_unit; |
7385 | const char *comp_dir, *dwo_name; | |
7386 | ||
a2ce51a0 DE |
7387 | gdb_assert (cu != NULL); |
7388 | ||
b0c7bfa9 | 7389 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7390 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7391 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
7392 | |
7393 | if (this_cu->is_debug_types) | |
7394 | { | |
7395 | struct signatured_type *sig_type; | |
7396 | ||
7397 | /* Since this_cu is the first member of struct signatured_type, | |
7398 | we can go from a pointer to one to a pointer to the other. */ | |
7399 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
7400 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
7401 | } | |
7402 | else | |
7403 | { | |
a084a2a6 AT |
7404 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
7405 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
7406 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7407 | " [in module %s]"), | |
e3b94546 | 7408 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 7409 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 7410 | *signature); |
b0c7bfa9 DE |
7411 | } |
7412 | ||
b0c7bfa9 DE |
7413 | return dwo_unit; |
7414 | } | |
7415 | ||
a2ce51a0 | 7416 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7417 | See it for a description of the parameters. |
fcd3b13d | 7418 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7419 | |
7420 | static void | |
6aa5f3a6 DE |
7421 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7422 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7423 | die_reader_func_ftype *die_reader_func, |
7424 | void *data) | |
7425 | { | |
fcd3b13d | 7426 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7427 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7428 | struct die_reader_specs reader; |
7429 | const gdb_byte *info_ptr; | |
7430 | struct die_info *comp_unit_die; | |
7431 | int has_children; | |
ed2dc618 | 7432 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7433 | |
7434 | /* Verify we can do the following downcast, and that we have the | |
7435 | data we need. */ | |
7436 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7437 | sig_type = (struct signatured_type *) this_cu; | |
7438 | gdb_assert (sig_type->dwo_unit != NULL); | |
7439 | ||
6aa5f3a6 DE |
7440 | if (use_existing_cu && this_cu->cu != NULL) |
7441 | { | |
7442 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7443 | /* There's no need to do the rereading_dwo_cu handling that |
7444 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7445 | } | |
7446 | else | |
7447 | { | |
7448 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7449 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7450 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7451 | } |
7452 | ||
7453 | /* A future optimization, if needed, would be to use an existing | |
7454 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7455 | could share abbrev tables. */ | |
a2ce51a0 | 7456 | |
685af9cd TT |
7457 | /* The abbreviation table used by READER, this must live at least as long as |
7458 | READER. */ | |
7459 | abbrev_table_up dwo_abbrev_table; | |
7460 | ||
a2ce51a0 | 7461 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7462 | NULL /* stub_comp_unit_die */, |
7463 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7464 | &reader, &info_ptr, | |
685af9cd TT |
7465 | &comp_unit_die, &has_children, |
7466 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7467 | { |
7468 | /* Dummy die. */ | |
a2ce51a0 DE |
7469 | return; |
7470 | } | |
7471 | ||
7472 | /* All the "real" work is done here. */ | |
7473 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7474 | ||
6aa5f3a6 | 7475 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7476 | but the alternative is making the latter more complex. |
7477 | This function is only for the special case of using DWO files directly: | |
7478 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7479 | if (new_cu != NULL && keep) |
a2ce51a0 | 7480 | { |
fcd3b13d SM |
7481 | /* Link this CU into read_in_chain. */ |
7482 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7483 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7484 | /* The chain owns it now. */ | |
7485 | new_cu.release (); | |
a2ce51a0 | 7486 | } |
a2ce51a0 DE |
7487 | } |
7488 | ||
fd820528 | 7489 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7490 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7491 | |
f4dc4d17 DE |
7492 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7493 | Otherwise the table specified in the comp unit header is read in and used. | |
7494 | This is an optimization for when we already have the abbrev table. | |
7495 | ||
dee91e82 DE |
7496 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7497 | Otherwise, a new CU is allocated with xmalloc. | |
7498 | ||
7499 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7500 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7501 | ||
7502 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7503 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7504 | |
70221824 | 7505 | static void |
fd820528 | 7506 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7507 | struct abbrev_table *abbrev_table, |
fd820528 | 7508 | int use_existing_cu, int keep, |
58f0c718 | 7509 | bool skip_partial, |
fd820528 DE |
7510 | die_reader_func_ftype *die_reader_func, |
7511 | void *data) | |
c906108c | 7512 | { |
ed2dc618 | 7513 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7514 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7515 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7516 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7517 | struct dwarf2_cu *cu; |
d521ce57 | 7518 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7519 | struct die_reader_specs reader; |
d85a05f0 | 7520 | struct die_info *comp_unit_die; |
dee91e82 | 7521 | int has_children; |
dee91e82 | 7522 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7523 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7524 | /* Non-zero if CU currently points to a DWO file and we need to |
7525 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7526 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7527 | int rereading_dwo_cu = 0; |
c906108c | 7528 | |
b4f54984 | 7529 | if (dwarf_die_debug) |
9d8780f0 | 7530 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7531 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7532 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7533 | |
dee91e82 DE |
7534 | if (use_existing_cu) |
7535 | gdb_assert (keep); | |
23745b47 | 7536 | |
a2ce51a0 DE |
7537 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7538 | file (instead of going through the stub), short-circuit all of this. */ | |
7539 | if (this_cu->reading_dwo_directly) | |
7540 | { | |
7541 | /* Narrow down the scope of possibilities to have to understand. */ | |
7542 | gdb_assert (this_cu->is_debug_types); | |
7543 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7544 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7545 | die_reader_func, data); | |
a2ce51a0 DE |
7546 | return; |
7547 | } | |
7548 | ||
dee91e82 DE |
7549 | /* This is cheap if the section is already read in. */ |
7550 | dwarf2_read_section (objfile, section); | |
7551 | ||
9c541725 | 7552 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7553 | |
7554 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7555 | |
fcd3b13d | 7556 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7557 | if (use_existing_cu && this_cu->cu != NULL) |
7558 | { | |
7559 | cu = this_cu->cu; | |
42e7ad6c DE |
7560 | /* If this CU is from a DWO file we need to start over, we need to |
7561 | refetch the attributes from the skeleton CU. | |
7562 | This could be optimized by retrieving those attributes from when we | |
7563 | were here the first time: the previous comp_unit_die was stored in | |
7564 | comp_unit_obstack. But there's no data yet that we need this | |
7565 | optimization. */ | |
7566 | if (cu->dwo_unit != NULL) | |
7567 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7568 | } |
7569 | else | |
7570 | { | |
7571 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7572 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7573 | new_cu.reset (new dwarf2_cu (this_cu)); |
7574 | cu = new_cu.get (); | |
42e7ad6c | 7575 | } |
dee91e82 | 7576 | |
b0c7bfa9 | 7577 | /* Get the header. */ |
9c541725 | 7578 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7579 | { |
7580 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7581 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7582 | } |
7583 | else | |
7584 | { | |
3019eac3 | 7585 | if (this_cu->is_debug_types) |
dee91e82 | 7586 | { |
ed2dc618 SM |
7587 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7588 | &cu->header, section, | |
4bdcc0c1 | 7589 | abbrev_section, info_ptr, |
43988095 | 7590 | rcuh_kind::TYPE); |
dee91e82 | 7591 | |
42e7ad6c DE |
7592 | /* Since per_cu is the first member of struct signatured_type, |
7593 | we can go from a pointer to one to a pointer to the other. */ | |
7594 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7595 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7596 | gdb_assert (sig_type->type_offset_in_tu |
7597 | == cu->header.type_cu_offset_in_tu); | |
7598 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7599 | |
42e7ad6c DE |
7600 | /* LENGTH has not been set yet for type units if we're |
7601 | using .gdb_index. */ | |
1ce1cefd | 7602 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7603 | |
7604 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7605 | sig_type->type_offset_in_section = |
7606 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7607 | |
7608 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7609 | } |
7610 | else | |
7611 | { | |
ed2dc618 SM |
7612 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7613 | &cu->header, section, | |
4bdcc0c1 | 7614 | abbrev_section, |
43988095 JK |
7615 | info_ptr, |
7616 | rcuh_kind::COMPILE); | |
dee91e82 | 7617 | |
9c541725 | 7618 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7619 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7620 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7621 | } |
7622 | } | |
10b3939b | 7623 | |
6caca83c | 7624 | /* Skip dummy compilation units. */ |
dee91e82 | 7625 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7626 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7627 | return; |
6caca83c | 7628 | |
433df2d4 DE |
7629 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7630 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7631 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7632 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7633 | if (abbrev_table != NULL) |
685af9cd TT |
7634 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7635 | else | |
f4dc4d17 | 7636 | { |
685af9cd TT |
7637 | abbrev_table_holder |
7638 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7639 | cu->header.abbrev_sect_off); | |
7640 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7641 | } |
af703f96 | 7642 | |
dee91e82 | 7643 | /* Read the top level CU/TU die. */ |
685af9cd | 7644 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7645 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7646 | |
58f0c718 TT |
7647 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7648 | return; | |
7649 | ||
b0c7bfa9 | 7650 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7651 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7652 | table from the DWO file and pass the ownership over to us. It will be | |
7653 | referenced from READER, so we must make sure to free it after we're done | |
7654 | with READER. | |
7655 | ||
b0c7bfa9 DE |
7656 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7657 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7658 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
685af9cd | 7659 | abbrev_table_up dwo_abbrev_table; |
a084a2a6 | 7660 | if (dwo_name != nullptr) |
3019eac3 | 7661 | { |
3019eac3 | 7662 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7663 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7664 | |
7665 | if (has_children) | |
6a506a2d | 7666 | { |
b98664d3 | 7667 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7668 | " has children (offset %s) [in module %s]"), |
7669 | sect_offset_str (this_cu->sect_off), | |
7670 | bfd_get_filename (abfd)); | |
6a506a2d | 7671 | } |
b0c7bfa9 | 7672 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7673 | if (dwo_unit != NULL) |
3019eac3 | 7674 | { |
6a506a2d | 7675 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7676 | comp_unit_die, NULL, |
6a506a2d | 7677 | &reader, &info_ptr, |
685af9cd TT |
7678 | &dwo_comp_unit_die, &has_children, |
7679 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7680 | { |
7681 | /* Dummy die. */ | |
6a506a2d DE |
7682 | return; |
7683 | } | |
7684 | comp_unit_die = dwo_comp_unit_die; | |
7685 | } | |
7686 | else | |
7687 | { | |
7688 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7689 | the stub. A complaint has already been logged. There's | |
7690 | not much more we can do except pass on the stub DIE to | |
7691 | die_reader_func. We don't want to throw an error on bad | |
7692 | debug info. */ | |
3019eac3 DE |
7693 | } |
7694 | } | |
7695 | ||
b0c7bfa9 | 7696 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7697 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7698 | ||
b0c7bfa9 | 7699 | /* Done, clean up. */ |
fcd3b13d | 7700 | if (new_cu != NULL && keep) |
348e048f | 7701 | { |
fcd3b13d SM |
7702 | /* Link this CU into read_in_chain. */ |
7703 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7704 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7705 | /* The chain owns it now. */ | |
7706 | new_cu.release (); | |
348e048f | 7707 | } |
dee91e82 DE |
7708 | } |
7709 | ||
33e80786 DE |
7710 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7711 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7712 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7713 | |
7714 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7715 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7716 | |
7717 | We fill in THIS_CU->length. | |
7718 | ||
7719 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7720 | linker) then DIE_READER_FUNC will not get called. | |
7721 | ||
7722 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7723 | This is done in order to not leave THIS_CU->cu in a state where we have |
7724 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7725 | |
7726 | static void | |
7727 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7728 | struct dwo_file *dwo_file, |
dee91e82 DE |
7729 | die_reader_func_ftype *die_reader_func, |
7730 | void *data) | |
7731 | { | |
ed2dc618 | 7732 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7733 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7734 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7735 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7736 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7737 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7738 | struct die_reader_specs reader; |
dee91e82 DE |
7739 | struct die_info *comp_unit_die; |
7740 | int has_children; | |
7741 | ||
b4f54984 | 7742 | if (dwarf_die_debug) |
9d8780f0 | 7743 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7744 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7745 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7746 | |
dee91e82 DE |
7747 | gdb_assert (this_cu->cu == NULL); |
7748 | ||
33e80786 DE |
7749 | abbrev_section = (dwo_file != NULL |
7750 | ? &dwo_file->sections.abbrev | |
7751 | : get_abbrev_section_for_cu (this_cu)); | |
7752 | ||
dee91e82 DE |
7753 | /* This is cheap if the section is already read in. */ |
7754 | dwarf2_read_section (objfile, section); | |
7755 | ||
fcd3b13d | 7756 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7757 | |
9c541725 | 7758 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7759 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7760 | &cu.header, section, | |
4bdcc0c1 | 7761 | abbrev_section, info_ptr, |
43988095 JK |
7762 | (this_cu->is_debug_types |
7763 | ? rcuh_kind::TYPE | |
7764 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7765 | |
1ce1cefd | 7766 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7767 | |
7768 | /* Skip dummy compilation units. */ | |
7769 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7770 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7771 | return; |
72bf9492 | 7772 | |
685af9cd TT |
7773 | abbrev_table_up abbrev_table |
7774 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7775 | cu.header.abbrev_sect_off); | |
dee91e82 | 7776 | |
685af9cd | 7777 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7778 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7779 | ||
7780 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7781 | } |
7782 | ||
3019eac3 DE |
7783 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7784 | does not lookup the specified DWO file. | |
7785 | This cannot be used to read DWO files. | |
dee91e82 DE |
7786 | |
7787 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7788 | This is done in order to not leave THIS_CU->cu in a state where we have |
7789 | to care whether it refers to the "main" CU or the DWO CU. | |
7790 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7791 | |
7792 | static void | |
7793 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7794 | die_reader_func_ftype *die_reader_func, | |
7795 | void *data) | |
7796 | { | |
33e80786 | 7797 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7798 | } |
0018ea6f DE |
7799 | \f |
7800 | /* Type Unit Groups. | |
dee91e82 | 7801 | |
0018ea6f DE |
7802 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7803 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7804 | so that all types coming from the same compilation (.o file) are grouped | |
7805 | together. A future step could be to put the types in the same symtab as | |
7806 | the CU the types ultimately came from. */ | |
ff013f42 | 7807 | |
f4dc4d17 DE |
7808 | static hashval_t |
7809 | hash_type_unit_group (const void *item) | |
7810 | { | |
9a3c8263 SM |
7811 | const struct type_unit_group *tu_group |
7812 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7813 | |
094b34ac | 7814 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7815 | } |
348e048f DE |
7816 | |
7817 | static int | |
f4dc4d17 | 7818 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7819 | { |
9a3c8263 SM |
7820 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7821 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7822 | |
094b34ac | 7823 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7824 | } |
348e048f | 7825 | |
f4dc4d17 DE |
7826 | /* Allocate a hash table for type unit groups. */ |
7827 | ||
7828 | static htab_t | |
ed2dc618 | 7829 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7830 | { |
7831 | return htab_create_alloc_ex (3, | |
7832 | hash_type_unit_group, | |
7833 | eq_type_unit_group, | |
7834 | NULL, | |
ed2dc618 | 7835 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7836 | hashtab_obstack_allocate, |
7837 | dummy_obstack_deallocate); | |
7838 | } | |
dee91e82 | 7839 | |
f4dc4d17 DE |
7840 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7841 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7842 | of any one psymtab grow too big. */ | |
7843 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7844 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7845 | |
094b34ac | 7846 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7847 | Create the type_unit_group object used to hold one or more TUs. */ |
7848 | ||
7849 | static struct type_unit_group * | |
094b34ac | 7850 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7851 | { |
518817b3 SM |
7852 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7853 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7854 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7855 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7856 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7857 | |
7858 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7859 | struct type_unit_group); | |
094b34ac | 7860 | per_cu = &tu_group->per_cu; |
518817b3 | 7861 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7862 | |
094b34ac DE |
7863 | if (dwarf2_per_objfile->using_index) |
7864 | { | |
7865 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7866 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7867 | } |
7868 | else | |
7869 | { | |
9c541725 | 7870 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac | 7871 | struct partial_symtab *pst; |
528e1572 | 7872 | std::string name; |
094b34ac DE |
7873 | |
7874 | /* Give the symtab a useful name for debug purposes. */ | |
7875 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7876 | name = string_printf ("<type_units_%d>", |
7877 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7878 | else |
528e1572 | 7879 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7880 | |
528e1572 | 7881 | pst = create_partial_symtab (per_cu, name.c_str ()); |
094b34ac | 7882 | pst->anonymous = 1; |
094b34ac | 7883 | } |
f4dc4d17 | 7884 | |
094b34ac | 7885 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7886 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7887 | |
7888 | return tu_group; | |
7889 | } | |
7890 | ||
094b34ac DE |
7891 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7892 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7893 | |
7894 | static struct type_unit_group * | |
ff39bb5e | 7895 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7896 | { |
518817b3 SM |
7897 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7898 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7899 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7900 | struct type_unit_group *tu_group; | |
7901 | void **slot; | |
7902 | unsigned int line_offset; | |
7903 | struct type_unit_group type_unit_group_for_lookup; | |
7904 | ||
7905 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7906 | { | |
7907 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7908 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7909 | } |
7910 | ||
7911 | /* Do we need to create a new group, or can we use an existing one? */ | |
7912 | ||
7913 | if (stmt_list) | |
7914 | { | |
7915 | line_offset = DW_UNSND (stmt_list); | |
7916 | ++tu_stats->nr_symtab_sharers; | |
7917 | } | |
7918 | else | |
7919 | { | |
7920 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7921 | We can do various things here like create one group per TU or | |
7922 | spread them over multiple groups to split up the expansion work. | |
7923 | To avoid worst case scenarios (too many groups or too large groups) | |
7924 | we, umm, group them in bunches. */ | |
7925 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7926 | | (tu_stats->nr_stmt_less_type_units | |
7927 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7928 | ++tu_stats->nr_stmt_less_type_units; | |
7929 | } | |
7930 | ||
094b34ac | 7931 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7932 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7933 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7934 | &type_unit_group_for_lookup, INSERT); | |
7935 | if (*slot != NULL) | |
7936 | { | |
9a3c8263 | 7937 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7938 | gdb_assert (tu_group != NULL); |
7939 | } | |
7940 | else | |
7941 | { | |
9c541725 | 7942 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7943 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7944 | *slot = tu_group; |
7945 | ++tu_stats->nr_symtabs; | |
7946 | } | |
7947 | ||
7948 | return tu_group; | |
7949 | } | |
0018ea6f DE |
7950 | \f |
7951 | /* Partial symbol tables. */ | |
7952 | ||
7953 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7954 | ||
7955 | The caller must fill in the following details: | |
7956 | dirname, textlow, texthigh. */ | |
7957 | ||
7958 | static struct partial_symtab * | |
7959 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7960 | { | |
e3b94546 | 7961 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7962 | struct partial_symtab *pst; |
7963 | ||
939652a5 | 7964 | pst = start_psymtab_common (objfile, name, 0); |
0018ea6f DE |
7965 | |
7966 | pst->psymtabs_addrmap_supported = 1; | |
7967 | ||
7968 | /* This is the glue that links PST into GDB's symbol API. */ | |
7969 | pst->read_symtab_private = per_cu; | |
7970 | pst->read_symtab = dwarf2_read_symtab; | |
7971 | per_cu->v.psymtab = pst; | |
7972 | ||
7973 | return pst; | |
7974 | } | |
7975 | ||
b93601f3 TT |
7976 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7977 | type. */ | |
7978 | ||
7979 | struct process_psymtab_comp_unit_data | |
7980 | { | |
7981 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7982 | ||
7983 | int want_partial_unit; | |
7984 | ||
7985 | /* The "pretend" language that is used if the CU doesn't declare a | |
7986 | language. */ | |
7987 | ||
7988 | enum language pretend_language; | |
7989 | }; | |
7990 | ||
0018ea6f DE |
7991 | /* die_reader_func for process_psymtab_comp_unit. */ |
7992 | ||
7993 | static void | |
7994 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7995 | const gdb_byte *info_ptr, |
0018ea6f DE |
7996 | struct die_info *comp_unit_die, |
7997 | int has_children, | |
7998 | void *data) | |
7999 | { | |
8000 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8001 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8002 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8003 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8004 | CORE_ADDR baseaddr; |
8005 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
8006 | struct partial_symtab *pst; | |
3a2b436a | 8007 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8008 | const char *filename; |
9a3c8263 SM |
8009 | struct process_psymtab_comp_unit_data *info |
8010 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8011 | |
b93601f3 | 8012 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8013 | return; |
8014 | ||
8015 | gdb_assert (! per_cu->is_debug_types); | |
8016 | ||
b93601f3 | 8017 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f | 8018 | |
0018ea6f | 8019 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
8020 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8021 | if (filename == NULL) | |
0018ea6f | 8022 | filename = ""; |
0018ea6f DE |
8023 | |
8024 | pst = create_partial_symtab (per_cu, filename); | |
8025 | ||
8026 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8027 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8028 | |
8029 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8030 | ||
8031 | dwarf2_find_base_address (comp_unit_die, cu); | |
8032 | ||
8033 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8034 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8035 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8036 | &best_highpc, cu, pst); | |
8037 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8038 | { |
8039 | CORE_ADDR low | |
8040 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8041 | - baseaddr); | |
8042 | CORE_ADDR high | |
8043 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8044 | - baseaddr - 1); | |
8045 | /* Store the contiguous range if it is not empty; it can be | |
8046 | empty for CUs with no code. */ | |
d320c2b5 TT |
8047 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
8048 | low, high, pst); | |
79748972 | 8049 | } |
0018ea6f DE |
8050 | |
8051 | /* Check if comp unit has_children. | |
8052 | If so, read the rest of the partial symbols from this comp unit. | |
8053 | If not, there's no more debug_info for this comp unit. */ | |
8054 | if (has_children) | |
8055 | { | |
8056 | struct partial_die_info *first_die; | |
8057 | CORE_ADDR lowpc, highpc; | |
8058 | ||
8059 | lowpc = ((CORE_ADDR) -1); | |
8060 | highpc = ((CORE_ADDR) 0); | |
8061 | ||
8062 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8063 | ||
8064 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8065 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8066 | |
8067 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8068 | complaints from `maint check'. */ | |
8069 | if (lowpc == ((CORE_ADDR) -1)) | |
8070 | lowpc = highpc; | |
8071 | ||
8072 | /* If the compilation unit didn't have an explicit address range, | |
8073 | then use the information extracted from its child dies. */ | |
e385593e | 8074 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8075 | { |
8076 | best_lowpc = lowpc; | |
8077 | best_highpc = highpc; | |
8078 | } | |
8079 | } | |
4ae976d1 | 8080 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8081 | best_lowpc + baseaddr) |
8082 | - baseaddr); | |
4ae976d1 | 8083 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8084 | best_highpc + baseaddr) |
8085 | - baseaddr); | |
0018ea6f | 8086 | |
8763cede | 8087 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8088 | |
8089 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8090 | { | |
8091 | int i; | |
8092 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8093 | struct dwarf2_per_cu_data *iter; | |
8094 | ||
8095 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8096 | post-pass. */ | |
8097 | pst->number_of_dependencies = len; | |
a9342b62 TT |
8098 | pst->dependencies |
8099 | = objfile->partial_symtabs->allocate_dependencies (len); | |
0018ea6f DE |
8100 | for (i = 0; |
8101 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8102 | i, iter); | |
8103 | ++i) | |
8104 | pst->dependencies[i] = iter->v.psymtab; | |
8105 | ||
8106 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8107 | } | |
8108 | ||
8109 | /* Get the list of files included in the current compilation unit, | |
8110 | and build a psymtab for each of them. */ | |
8111 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8112 | ||
b4f54984 | 8113 | if (dwarf_read_debug) |
b926417a TT |
8114 | fprintf_unfiltered (gdb_stdlog, |
8115 | "Psymtab for %s unit @%s: %s - %s" | |
8116 | ", %d global, %d static syms\n", | |
8117 | per_cu->is_debug_types ? "type" : "comp", | |
8118 | sect_offset_str (per_cu->sect_off), | |
8119 | paddress (gdbarch, pst->text_low (objfile)), | |
8120 | paddress (gdbarch, pst->text_high (objfile)), | |
8121 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8122 | } |
8123 | ||
8124 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8125 | Process compilation unit THIS_CU for a psymtab. */ | |
8126 | ||
8127 | static void | |
8128 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8129 | int want_partial_unit, |
8130 | enum language pretend_language) | |
0018ea6f DE |
8131 | { |
8132 | /* If this compilation unit was already read in, free the | |
8133 | cached copy in order to read it in again. This is | |
8134 | necessary because we skipped some symbols when we first | |
8135 | read in the compilation unit (see load_partial_dies). | |
8136 | This problem could be avoided, but the benefit is unclear. */ | |
8137 | if (this_cu->cu != NULL) | |
8138 | free_one_cached_comp_unit (this_cu); | |
8139 | ||
f1902523 | 8140 | if (this_cu->is_debug_types) |
58f0c718 TT |
8141 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8142 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8143 | else |
8144 | { | |
8145 | process_psymtab_comp_unit_data info; | |
8146 | info.want_partial_unit = want_partial_unit; | |
8147 | info.pretend_language = pretend_language; | |
58f0c718 | 8148 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8149 | process_psymtab_comp_unit_reader, &info); |
8150 | } | |
0018ea6f DE |
8151 | |
8152 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8153 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8154 | } |
f4dc4d17 DE |
8155 | |
8156 | /* Reader function for build_type_psymtabs. */ | |
8157 | ||
8158 | static void | |
8159 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8160 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8161 | struct die_info *type_unit_die, |
8162 | int has_children, | |
8163 | void *data) | |
8164 | { | |
ed2dc618 | 8165 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8166 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8167 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8168 | struct dwarf2_cu *cu = reader->cu; | |
8169 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8170 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8171 | struct type_unit_group *tu_group; |
8172 | struct attribute *attr; | |
8173 | struct partial_die_info *first_die; | |
8174 | CORE_ADDR lowpc, highpc; | |
8175 | struct partial_symtab *pst; | |
8176 | ||
8177 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8178 | gdb_assert (per_cu->is_debug_types); |
8179 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8180 | |
8181 | if (! has_children) | |
8182 | return; | |
8183 | ||
8184 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8185 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8186 | |
0186c6a7 | 8187 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8188 | |
8189 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 DE |
8190 | pst = create_partial_symtab (per_cu, ""); |
8191 | pst->anonymous = 1; | |
8192 | ||
8193 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8194 | ||
8195 | lowpc = (CORE_ADDR) -1; | |
8196 | highpc = (CORE_ADDR) 0; | |
8197 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8198 | ||
8763cede | 8199 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8200 | } |
8201 | ||
73051182 DE |
8202 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8203 | ||
8204 | struct tu_abbrev_offset | |
8205 | { | |
b2bdb8cf SM |
8206 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8207 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8208 | {} | |
8209 | ||
8210 | signatured_type *sig_type; | |
73051182 DE |
8211 | sect_offset abbrev_offset; |
8212 | }; | |
8213 | ||
484cf504 | 8214 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8215 | |
484cf504 TT |
8216 | static bool |
8217 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8218 | const struct tu_abbrev_offset &b) | |
73051182 | 8219 | { |
484cf504 | 8220 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8221 | } |
8222 | ||
8223 | /* Efficiently read all the type units. | |
8224 | This does the bulk of the work for build_type_psymtabs. | |
8225 | ||
8226 | The efficiency is because we sort TUs by the abbrev table they use and | |
8227 | only read each abbrev table once. In one program there are 200K TUs | |
8228 | sharing 8K abbrev tables. | |
8229 | ||
8230 | The main purpose of this function is to support building the | |
8231 | dwarf2_per_objfile->type_unit_groups table. | |
8232 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8233 | can collapse the search space by grouping them by stmt_list. | |
8234 | The savings can be significant, in the same program from above the 200K TUs | |
8235 | share 8K stmt_list tables. | |
8236 | ||
8237 | FUNC is expected to call get_type_unit_group, which will create the | |
8238 | struct type_unit_group if necessary and add it to | |
8239 | dwarf2_per_objfile->type_unit_groups. */ | |
8240 | ||
8241 | static void | |
ed2dc618 | 8242 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8243 | { |
73051182 | 8244 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8245 | abbrev_table_up abbrev_table; |
73051182 | 8246 | sect_offset abbrev_offset; |
73051182 DE |
8247 | |
8248 | /* It's up to the caller to not call us multiple times. */ | |
8249 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8250 | ||
b2bdb8cf | 8251 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8252 | return; |
8253 | ||
8254 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8255 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8256 | read each abbrev table in. | |
8257 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8258 | This is simpler and efficient enough for now. | |
8259 | ||
8260 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8261 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8262 | stmt_list value too so in practice this should work well. | |
8263 | ||
8264 | The basic algorithm here is: | |
8265 | ||
8266 | sort TUs by abbrev table | |
8267 | for each TU with same abbrev table: | |
8268 | read abbrev table if first user | |
8269 | read TU top level DIE | |
8270 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8271 | call FUNC */ | |
8272 | ||
b4f54984 | 8273 | if (dwarf_read_debug) |
73051182 DE |
8274 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8275 | ||
8276 | /* Sort in a separate table to maintain the order of all_type_units | |
8277 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8278 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8279 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8280 | ||
8281 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8282 | sorted_by_abbrev.emplace_back | |
8283 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8284 | sig_type->per_cu.section, | |
8285 | sig_type->per_cu.sect_off)); | |
73051182 | 8286 | |
484cf504 TT |
8287 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8288 | sort_tu_by_abbrev_offset); | |
73051182 | 8289 | |
9c541725 | 8290 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8291 | |
b2bdb8cf | 8292 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8293 | { |
73051182 DE |
8294 | /* Switch to the next abbrev table if necessary. */ |
8295 | if (abbrev_table == NULL | |
b2bdb8cf | 8296 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8297 | { |
b2bdb8cf | 8298 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8299 | abbrev_table = |
ed2dc618 SM |
8300 | abbrev_table_read_table (dwarf2_per_objfile, |
8301 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8302 | abbrev_offset); |
8303 | ++tu_stats->nr_uniq_abbrev_tables; | |
8304 | } | |
8305 | ||
b2bdb8cf | 8306 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8307 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8308 | } |
6aa5f3a6 | 8309 | } |
73051182 | 8310 | |
6aa5f3a6 DE |
8311 | /* Print collected type unit statistics. */ |
8312 | ||
8313 | static void | |
ed2dc618 | 8314 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8315 | { |
8316 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8317 | ||
8318 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8319 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8320 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8321 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8322 | tu_stats->nr_uniq_abbrev_tables); | |
8323 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8324 | tu_stats->nr_symtabs); | |
8325 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8326 | tu_stats->nr_symtab_sharers); | |
8327 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8328 | tu_stats->nr_stmt_less_type_units); | |
8329 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8330 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8331 | } |
8332 | ||
f4dc4d17 DE |
8333 | /* Traversal function for build_type_psymtabs. */ |
8334 | ||
8335 | static int | |
8336 | build_type_psymtab_dependencies (void **slot, void *info) | |
8337 | { | |
ed2dc618 SM |
8338 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8339 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8340 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8341 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8342 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8343 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8344 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8345 | struct signatured_type *iter; | |
f4dc4d17 DE |
8346 | int i; |
8347 | ||
8348 | gdb_assert (len > 0); | |
0186c6a7 | 8349 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8350 | |
8351 | pst->number_of_dependencies = len; | |
a9342b62 | 8352 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
f4dc4d17 | 8353 | for (i = 0; |
0186c6a7 | 8354 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8355 | ++i) |
8356 | { | |
0186c6a7 DE |
8357 | gdb_assert (iter->per_cu.is_debug_types); |
8358 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8359 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8360 | } |
8361 | ||
0186c6a7 | 8362 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8363 | |
8364 | return 1; | |
8365 | } | |
8366 | ||
8367 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8368 | Build partial symbol tables for the .debug_types comp-units. */ | |
8369 | ||
8370 | static void | |
ed2dc618 | 8371 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8372 | { |
ed2dc618 | 8373 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8374 | return; |
8375 | ||
ed2dc618 | 8376 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8377 | } |
f4dc4d17 | 8378 | |
6aa5f3a6 DE |
8379 | /* Traversal function for process_skeletonless_type_unit. |
8380 | Read a TU in a DWO file and build partial symbols for it. */ | |
8381 | ||
8382 | static int | |
8383 | process_skeletonless_type_unit (void **slot, void *info) | |
8384 | { | |
8385 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8386 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8387 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8388 | struct signatured_type find_entry, *entry; |
8389 | ||
8390 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8391 | ||
8392 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8393 | { | |
8394 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8395 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8396 | } |
8397 | ||
8398 | find_entry.signature = dwo_unit->signature; | |
8399 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8400 | INSERT); | |
8401 | /* If we've already seen this type there's nothing to do. What's happening | |
8402 | is we're doing our own version of comdat-folding here. */ | |
8403 | if (*slot != NULL) | |
8404 | return 1; | |
8405 | ||
8406 | /* This does the job that create_all_type_units would have done for | |
8407 | this TU. */ | |
ed2dc618 SM |
8408 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8409 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8410 | *slot = entry; |
8411 | ||
8412 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8413 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8414 | build_type_psymtabs_reader, NULL); |
8415 | ||
8416 | return 1; | |
8417 | } | |
8418 | ||
8419 | /* Traversal function for process_skeletonless_type_units. */ | |
8420 | ||
8421 | static int | |
8422 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8423 | { | |
8424 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8425 | ||
8426 | if (dwo_file->tus != NULL) | |
8427 | { | |
8428 | htab_traverse_noresize (dwo_file->tus, | |
8429 | process_skeletonless_type_unit, info); | |
8430 | } | |
8431 | ||
8432 | return 1; | |
8433 | } | |
8434 | ||
8435 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8436 | This is needed in case a TU was emitted without its skeleton. | |
8437 | Note: This can't be done until we know what all the DWO files are. */ | |
8438 | ||
8439 | static void | |
ed2dc618 | 8440 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8441 | { |
8442 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8443 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8444 | && dwarf2_per_objfile->dwo_files != NULL) |
8445 | { | |
51ac9db5 | 8446 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 8447 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 8448 | dwarf2_per_objfile); |
6aa5f3a6 | 8449 | } |
348e048f DE |
8450 | } |
8451 | ||
ed2dc618 | 8452 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8453 | |
8454 | static void | |
ed2dc618 | 8455 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8456 | { |
b76e467d | 8457 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8458 | { |
95554aad | 8459 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8460 | |
36586728 TT |
8461 | if (pst == NULL) |
8462 | continue; | |
8463 | ||
b76e467d | 8464 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8465 | { |
8466 | /* Set the 'user' field only if it is not already set. */ | |
8467 | if (pst->dependencies[j]->user == NULL) | |
8468 | pst->dependencies[j]->user = pst; | |
8469 | } | |
8470 | } | |
8471 | } | |
8472 | ||
93311388 DE |
8473 | /* Build the partial symbol table by doing a quick pass through the |
8474 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8475 | |
93311388 | 8476 | static void |
ed2dc618 | 8477 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8478 | { |
ed2dc618 | 8479 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8480 | |
b4f54984 | 8481 | if (dwarf_read_debug) |
45cfd468 DE |
8482 | { |
8483 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8484 | objfile_name (objfile)); |
45cfd468 DE |
8485 | } |
8486 | ||
98bfdba5 PA |
8487 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8488 | ||
be391dca | 8489 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8490 | |
93311388 DE |
8491 | /* Any cached compilation units will be linked by the per-objfile |
8492 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8493 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8494 | |
ed2dc618 | 8495 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8496 | |
ed2dc618 | 8497 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8498 | |
60606b2c TT |
8499 | /* Create a temporary address map on a temporary obstack. We later |
8500 | copy this to the final obstack. */ | |
8268c778 | 8501 | auto_obstack temp_obstack; |
791afaa2 TT |
8502 | |
8503 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8504 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8505 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8506 | |
b76e467d SM |
8507 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8508 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8509 | |
6aa5f3a6 | 8510 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8511 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8512 | |
8513 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8514 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8515 | { | |
8516 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8517 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8518 | } |
8519 | ||
b4f54984 | 8520 | if (dwarf_read_debug) |
ed2dc618 | 8521 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8522 | |
ed2dc618 | 8523 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8524 | |
d320c2b5 TT |
8525 | objfile->partial_symtabs->psymtabs_addrmap |
8526 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8527 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8528 | /* At this point we want to keep the address map. */ |
8529 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8530 | |
b4f54984 | 8531 | if (dwarf_read_debug) |
45cfd468 | 8532 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8533 | objfile_name (objfile)); |
ae038cb0 DJ |
8534 | } |
8535 | ||
3019eac3 | 8536 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8537 | |
8538 | static void | |
dee91e82 | 8539 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8540 | const gdb_byte *info_ptr, |
dee91e82 DE |
8541 | struct die_info *comp_unit_die, |
8542 | int has_children, | |
8543 | void *data) | |
ae038cb0 | 8544 | { |
dee91e82 | 8545 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8546 | |
95554aad | 8547 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8548 | |
ae038cb0 DJ |
8549 | /* Check if comp unit has_children. |
8550 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8551 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8552 | if (has_children) |
dee91e82 DE |
8553 | load_partial_dies (reader, info_ptr, 0); |
8554 | } | |
98bfdba5 | 8555 | |
dee91e82 DE |
8556 | /* Load the partial DIEs for a secondary CU into memory. |
8557 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8558 | |
dee91e82 DE |
8559 | static void |
8560 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8561 | { | |
58f0c718 | 8562 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8563 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8564 | } |
8565 | ||
ae038cb0 | 8566 | static void |
ed2dc618 | 8567 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8568 | struct dwarf2_section_info *section, |
f1902523 | 8569 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8570 | unsigned int is_dwz) |
ae038cb0 | 8571 | { |
d521ce57 | 8572 | const gdb_byte *info_ptr; |
ed2dc618 | 8573 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8574 | |
b4f54984 | 8575 | if (dwarf_read_debug) |
bf6af496 | 8576 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8577 | get_section_name (section), |
8578 | get_section_file_name (section)); | |
bf6af496 | 8579 | |
36586728 | 8580 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8581 | |
36586728 | 8582 | info_ptr = section->buffer; |
6e70227d | 8583 | |
36586728 | 8584 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8585 | { |
ae038cb0 | 8586 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8587 | |
9c541725 | 8588 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8589 | |
f1902523 | 8590 | comp_unit_head cu_header; |
ed2dc618 SM |
8591 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8592 | abbrev_section, info_ptr, | |
8593 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8594 | |
8595 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8596 | if (cu_header.unit_type != DW_UT_type) |
8597 | { | |
8598 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8599 | struct dwarf2_per_cu_data); | |
8600 | memset (this_cu, 0, sizeof (*this_cu)); | |
8601 | } | |
8602 | else | |
8603 | { | |
8604 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8605 | struct signatured_type); | |
8606 | memset (sig_type, 0, sizeof (*sig_type)); | |
8607 | sig_type->signature = cu_header.signature; | |
8608 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8609 | this_cu = &sig_type->per_cu; | |
8610 | } | |
8611 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8612 | this_cu->sect_off = sect_off; |
f1902523 | 8613 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8614 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8615 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8616 | this_cu->section = section; |
ae038cb0 | 8617 | |
b76e467d | 8618 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8619 | |
8620 | info_ptr = info_ptr + this_cu->length; | |
8621 | } | |
36586728 TT |
8622 | } |
8623 | ||
8624 | /* Create a list of all compilation units in OBJFILE. | |
8625 | This is only done for -readnow and building partial symtabs. */ | |
8626 | ||
8627 | static void | |
ed2dc618 | 8628 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8629 | { |
b76e467d | 8630 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8631 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8632 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8633 | |
b76e467d | 8634 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8635 | if (dwz != NULL) |
ed2dc618 | 8636 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8637 | 1); |
c906108c SS |
8638 | } |
8639 | ||
5734ee8b | 8640 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8641 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8642 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8643 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8644 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8645 | |
72bf9492 DJ |
8646 | static void |
8647 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8648 | CORE_ADDR *highpc, int set_addrmap, |
8649 | struct dwarf2_cu *cu) | |
c906108c | 8650 | { |
72bf9492 | 8651 | struct partial_die_info *pdi; |
c906108c | 8652 | |
91c24f0a DC |
8653 | /* Now, march along the PDI's, descending into ones which have |
8654 | interesting children but skipping the children of the other ones, | |
8655 | until we reach the end of the compilation unit. */ | |
c906108c | 8656 | |
72bf9492 | 8657 | pdi = first_die; |
91c24f0a | 8658 | |
72bf9492 DJ |
8659 | while (pdi != NULL) |
8660 | { | |
52356b79 | 8661 | pdi->fixup (cu); |
c906108c | 8662 | |
f55ee35c | 8663 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8664 | children, so we need to look at them. Ditto for anonymous |
8665 | enums. */ | |
933c6fe4 | 8666 | |
72bf9492 | 8667 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8668 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8669 | || pdi->tag == DW_TAG_imported_unit |
8670 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8671 | { |
72bf9492 | 8672 | switch (pdi->tag) |
c906108c SS |
8673 | { |
8674 | case DW_TAG_subprogram: | |
b1dc1806 | 8675 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8676 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8677 | break; |
72929c62 | 8678 | case DW_TAG_constant: |
c906108c SS |
8679 | case DW_TAG_variable: |
8680 | case DW_TAG_typedef: | |
91c24f0a | 8681 | case DW_TAG_union_type: |
72bf9492 | 8682 | if (!pdi->is_declaration) |
63d06c5c | 8683 | { |
72bf9492 | 8684 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8685 | } |
8686 | break; | |
c906108c | 8687 | case DW_TAG_class_type: |
680b30c7 | 8688 | case DW_TAG_interface_type: |
c906108c | 8689 | case DW_TAG_structure_type: |
72bf9492 | 8690 | if (!pdi->is_declaration) |
c906108c | 8691 | { |
72bf9492 | 8692 | add_partial_symbol (pdi, cu); |
c906108c | 8693 | } |
b7fee5a3 KS |
8694 | if ((cu->language == language_rust |
8695 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8696 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8697 | set_addrmap, cu); | |
c906108c | 8698 | break; |
91c24f0a | 8699 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8700 | if (!pdi->is_declaration) |
8701 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8702 | break; |
8703 | case DW_TAG_base_type: | |
a02abb62 | 8704 | case DW_TAG_subrange_type: |
c906108c | 8705 | /* File scope base type definitions are added to the partial |
c5aa993b | 8706 | symbol table. */ |
72bf9492 | 8707 | add_partial_symbol (pdi, cu); |
c906108c | 8708 | break; |
d9fa45fe | 8709 | case DW_TAG_namespace: |
cdc07690 | 8710 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8711 | break; |
5d7cb8df | 8712 | case DW_TAG_module: |
cdc07690 | 8713 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8714 | break; |
95554aad TT |
8715 | case DW_TAG_imported_unit: |
8716 | { | |
8717 | struct dwarf2_per_cu_data *per_cu; | |
8718 | ||
f4dc4d17 DE |
8719 | /* For now we don't handle imported units in type units. */ |
8720 | if (cu->per_cu->is_debug_types) | |
8721 | { | |
8722 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8723 | " supported in type units [in module %s]"), | |
518817b3 | 8724 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8725 | } |
8726 | ||
e3b94546 SM |
8727 | per_cu = dwarf2_find_containing_comp_unit |
8728 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8729 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8730 | |
8731 | /* Go read the partial unit, if needed. */ | |
8732 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8733 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8734 | |
f4dc4d17 | 8735 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8736 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8737 | } |
8738 | break; | |
74921315 KS |
8739 | case DW_TAG_imported_declaration: |
8740 | add_partial_symbol (pdi, cu); | |
8741 | break; | |
c906108c SS |
8742 | default: |
8743 | break; | |
8744 | } | |
8745 | } | |
8746 | ||
72bf9492 DJ |
8747 | /* If the die has a sibling, skip to the sibling. */ |
8748 | ||
8749 | pdi = pdi->die_sibling; | |
8750 | } | |
8751 | } | |
8752 | ||
8753 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8754 | |
72bf9492 | 8755 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8756 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8757 | Enumerators are an exception; they use the scope of their parent |
8758 | enumeration type, i.e. the name of the enumeration type is not | |
8759 | prepended to the enumerator. | |
91c24f0a | 8760 | |
72bf9492 DJ |
8761 | There are two complexities. One is DW_AT_specification; in this |
8762 | case "parent" means the parent of the target of the specification, | |
8763 | instead of the direct parent of the DIE. The other is compilers | |
8764 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8765 | the fully qualified name of structure types from their members' | |
8766 | linkage names. This must be done using the DIE's children rather | |
8767 | than the children of any DW_AT_specification target. We only need | |
8768 | to do this for structures at the top level, i.e. if the target of | |
8769 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8770 | have a parent. */ | |
8771 | ||
8772 | /* Compute the scope prefix associated with PDI's parent, in | |
8773 | compilation unit CU. The result will be allocated on CU's | |
8774 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8775 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8776 | static const char * |
72bf9492 DJ |
8777 | partial_die_parent_scope (struct partial_die_info *pdi, |
8778 | struct dwarf2_cu *cu) | |
8779 | { | |
15d034d0 | 8780 | const char *grandparent_scope; |
72bf9492 | 8781 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8782 | |
72bf9492 DJ |
8783 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8784 | then this means the parent of the specification DIE. */ | |
8785 | ||
8786 | real_pdi = pdi; | |
72bf9492 | 8787 | while (real_pdi->has_specification) |
fb816e8b | 8788 | { |
122cf0f2 AB |
8789 | auto res = find_partial_die (real_pdi->spec_offset, |
8790 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8791 | real_pdi = res.pdi; |
8792 | cu = res.cu; | |
8793 | } | |
72bf9492 DJ |
8794 | |
8795 | parent = real_pdi->die_parent; | |
8796 | if (parent == NULL) | |
8797 | return NULL; | |
8798 | ||
8799 | if (parent->scope_set) | |
8800 | return parent->scope; | |
8801 | ||
52356b79 | 8802 | parent->fixup (cu); |
72bf9492 | 8803 | |
10b3939b | 8804 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8805 | |
acebe513 UW |
8806 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8807 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8808 | Work around this problem here. */ | |
8809 | if (cu->language == language_cplus | |
6e70227d | 8810 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8811 | && strcmp (parent->name, "::") == 0 |
8812 | && grandparent_scope == NULL) | |
8813 | { | |
8814 | parent->scope = NULL; | |
8815 | parent->scope_set = 1; | |
8816 | return NULL; | |
8817 | } | |
8818 | ||
9c6c53f7 SA |
8819 | if (pdi->tag == DW_TAG_enumerator) |
8820 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8821 | parent->scope = grandparent_scope; | |
8822 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8823 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8824 | || parent->tag == DW_TAG_structure_type |
8825 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8826 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8827 | || parent->tag == DW_TAG_union_type |
8828 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8829 | { |
8830 | if (grandparent_scope == NULL) | |
8831 | parent->scope = parent->name; | |
8832 | else | |
3e43a32a MS |
8833 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8834 | grandparent_scope, | |
f55ee35c | 8835 | parent->name, 0, cu); |
72bf9492 | 8836 | } |
72bf9492 DJ |
8837 | else |
8838 | { | |
8839 | /* FIXME drow/2004-04-01: What should we be doing with | |
8840 | function-local names? For partial symbols, we should probably be | |
8841 | ignoring them. */ | |
fa9c3fa0 TT |
8842 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8843 | dwarf_tag_name (parent->tag), | |
8844 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8845 | parent->scope = grandparent_scope; |
c906108c SS |
8846 | } |
8847 | ||
72bf9492 DJ |
8848 | parent->scope_set = 1; |
8849 | return parent->scope; | |
8850 | } | |
8851 | ||
8852 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8853 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8854 | |
72bf9492 DJ |
8855 | static char * |
8856 | partial_die_full_name (struct partial_die_info *pdi, | |
8857 | struct dwarf2_cu *cu) | |
8858 | { | |
15d034d0 | 8859 | const char *parent_scope; |
72bf9492 | 8860 | |
98bfdba5 PA |
8861 | /* If this is a template instantiation, we can not work out the |
8862 | template arguments from partial DIEs. So, unfortunately, we have | |
8863 | to go through the full DIEs. At least any work we do building | |
8864 | types here will be reused if full symbols are loaded later. */ | |
8865 | if (pdi->has_template_arguments) | |
8866 | { | |
52356b79 | 8867 | pdi->fixup (cu); |
98bfdba5 PA |
8868 | |
8869 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8870 | { | |
8871 | struct die_info *die; | |
8872 | struct attribute attr; | |
8873 | struct dwarf2_cu *ref_cu = cu; | |
8874 | ||
b64f50a1 | 8875 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8876 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8877 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8878 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8879 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8880 | ||
8881 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8882 | } | |
8883 | } | |
8884 | ||
72bf9492 DJ |
8885 | parent_scope = partial_die_parent_scope (pdi, cu); |
8886 | if (parent_scope == NULL) | |
8887 | return NULL; | |
8888 | else | |
f55ee35c | 8889 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8890 | } |
8891 | ||
8892 | static void | |
72bf9492 | 8893 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8894 | { |
518817b3 SM |
8895 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8896 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8897 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8898 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8899 | CORE_ADDR addr = 0; |
15d034d0 | 8900 | const char *actual_name = NULL; |
e142c38c | 8901 | CORE_ADDR baseaddr; |
15d034d0 | 8902 | char *built_actual_name; |
e142c38c DJ |
8903 | |
8904 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8905 | |
15d034d0 TT |
8906 | built_actual_name = partial_die_full_name (pdi, cu); |
8907 | if (built_actual_name != NULL) | |
8908 | actual_name = built_actual_name; | |
63d06c5c | 8909 | |
72bf9492 DJ |
8910 | if (actual_name == NULL) |
8911 | actual_name = pdi->name; | |
8912 | ||
c906108c SS |
8913 | switch (pdi->tag) |
8914 | { | |
b1dc1806 | 8915 | case DW_TAG_inlined_subroutine: |
c906108c | 8916 | case DW_TAG_subprogram: |
79748972 TT |
8917 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8918 | - baseaddr); | |
2cfa0c8d | 8919 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8920 | { |
2cfa0c8d JB |
8921 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8922 | of the global scope. But in Ada, we want to be able to access | |
8923 | nested procedures globally. So all Ada subprograms are stored | |
8924 | in the global scope. */ | |
f47fb265 | 8925 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8926 | built_actual_name != NULL, |
f47fb265 | 8927 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8928 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8929 | psymbol_placement::GLOBAL, |
79748972 TT |
8930 | addr, |
8931 | cu->language, objfile); | |
c906108c SS |
8932 | } |
8933 | else | |
8934 | { | |
f47fb265 | 8935 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8936 | built_actual_name != NULL, |
f47fb265 | 8937 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8938 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8939 | psymbol_placement::STATIC, |
1762568f | 8940 | addr, cu->language, objfile); |
c906108c | 8941 | } |
0c1b455e TT |
8942 | |
8943 | if (pdi->main_subprogram && actual_name != NULL) | |
8944 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8945 | break; |
72929c62 | 8946 | case DW_TAG_constant: |
75aedd27 TT |
8947 | add_psymbol_to_list (actual_name, strlen (actual_name), |
8948 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, | |
8949 | -1, (pdi->is_external | |
8950 | ? psymbol_placement::GLOBAL | |
8951 | : psymbol_placement::STATIC), | |
8952 | 0, cu->language, objfile); | |
72929c62 | 8953 | break; |
c906108c | 8954 | case DW_TAG_variable: |
95554aad TT |
8955 | if (pdi->d.locdesc) |
8956 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8957 | |
95554aad | 8958 | if (pdi->d.locdesc |
caac4577 JG |
8959 | && addr == 0 |
8960 | && !dwarf2_per_objfile->has_section_at_zero) | |
8961 | { | |
8962 | /* A global or static variable may also have been stripped | |
8963 | out by the linker if unused, in which case its address | |
8964 | will be nullified; do not add such variables into partial | |
8965 | symbol table then. */ | |
8966 | } | |
8967 | else if (pdi->is_external) | |
c906108c SS |
8968 | { |
8969 | /* Global Variable. | |
8970 | Don't enter into the minimal symbol tables as there is | |
8971 | a minimal symbol table entry from the ELF symbols already. | |
8972 | Enter into partial symbol table if it has a location | |
8973 | descriptor or a type. | |
8974 | If the location descriptor is missing, new_symbol will create | |
8975 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8976 | be determined from the minimal symbol table whenever the variable | |
8977 | is referenced. | |
8978 | The address for the partial symbol table entry is not | |
8979 | used by GDB, but it comes in handy for debugging partial symbol | |
8980 | table building. */ | |
8981 | ||
95554aad | 8982 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8983 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8984 | built_actual_name != NULL, |
f47fb265 | 8985 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8986 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8987 | psymbol_placement::GLOBAL, |
79748972 | 8988 | addr, cu->language, objfile); |
c906108c SS |
8989 | } |
8990 | else | |
8991 | { | |
ff908ebf AW |
8992 | int has_loc = pdi->d.locdesc != NULL; |
8993 | ||
8994 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8995 | without location descriptors or constant values). */ | |
8996 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8997 | { |
15d034d0 | 8998 | xfree (built_actual_name); |
decbce07 MS |
8999 | return; |
9000 | } | |
ff908ebf | 9001 | |
f47fb265 | 9002 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9003 | built_actual_name != NULL, |
f47fb265 | 9004 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 9005 | SECT_OFF_TEXT (objfile), |
75aedd27 | 9006 | psymbol_placement::STATIC, |
79748972 | 9007 | has_loc ? addr : 0, |
f47fb265 | 9008 | cu->language, objfile); |
c906108c SS |
9009 | } |
9010 | break; | |
9011 | case DW_TAG_typedef: | |
9012 | case DW_TAG_base_type: | |
a02abb62 | 9013 | case DW_TAG_subrange_type: |
38d518c9 | 9014 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9015 | built_actual_name != NULL, |
79748972 | 9016 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9017 | psymbol_placement::STATIC, |
1762568f | 9018 | 0, cu->language, objfile); |
c906108c | 9019 | break; |
74921315 | 9020 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9021 | case DW_TAG_namespace: |
9022 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9023 | built_actual_name != NULL, |
79748972 | 9024 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9025 | psymbol_placement::GLOBAL, |
1762568f | 9026 | 0, cu->language, objfile); |
72bf9492 | 9027 | break; |
530e8392 | 9028 | case DW_TAG_module: |
a5fd13a9 BH |
9029 | /* With Fortran 77 there might be a "BLOCK DATA" module |
9030 | available without any name. If so, we skip the module as it | |
9031 | doesn't bring any value. */ | |
9032 | if (actual_name != nullptr) | |
9033 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9034 | built_actual_name != NULL, | |
9035 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
9036 | psymbol_placement::GLOBAL, | |
9037 | 0, cu->language, objfile); | |
530e8392 | 9038 | break; |
c906108c | 9039 | case DW_TAG_class_type: |
680b30c7 | 9040 | case DW_TAG_interface_type: |
c906108c SS |
9041 | case DW_TAG_structure_type: |
9042 | case DW_TAG_union_type: | |
9043 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9044 | /* Skip external references. The DWARF standard says in the section |
9045 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9046 | structure, union or class type is represented by a structure, | |
9047 | union or class entry that does not have a byte size attribute | |
9048 | and that has a DW_AT_declaration attribute." */ | |
9049 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9050 | { |
15d034d0 | 9051 | xfree (built_actual_name); |
decbce07 MS |
9052 | return; |
9053 | } | |
fa4028e9 | 9054 | |
63d06c5c DC |
9055 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9056 | static vs. global. */ | |
38d518c9 | 9057 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9058 | built_actual_name != NULL, |
79748972 | 9059 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9060 | cu->language == language_cplus |
75aedd27 TT |
9061 | ? psymbol_placement::GLOBAL |
9062 | : psymbol_placement::STATIC, | |
1762568f | 9063 | 0, cu->language, objfile); |
c906108c | 9064 | |
c906108c SS |
9065 | break; |
9066 | case DW_TAG_enumerator: | |
38d518c9 | 9067 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9068 | built_actual_name != NULL, |
79748972 | 9069 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9070 | cu->language == language_cplus |
75aedd27 TT |
9071 | ? psymbol_placement::GLOBAL |
9072 | : psymbol_placement::STATIC, | |
1762568f | 9073 | 0, cu->language, objfile); |
c906108c SS |
9074 | break; |
9075 | default: | |
9076 | break; | |
9077 | } | |
5c4e30ca | 9078 | |
15d034d0 | 9079 | xfree (built_actual_name); |
c906108c SS |
9080 | } |
9081 | ||
5c4e30ca DC |
9082 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9083 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9084 | the name of the enclosing namespace. */ | |
91c24f0a | 9085 | |
72bf9492 DJ |
9086 | static void |
9087 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9088 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9089 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9090 | { |
72bf9492 | 9091 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9092 | |
72bf9492 | 9093 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9094 | |
9095 | /* Now scan partial symbols in that namespace. */ | |
9096 | ||
91c24f0a | 9097 | if (pdi->has_children) |
cdc07690 | 9098 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9099 | } |
9100 | ||
5d7cb8df JK |
9101 | /* Read a partial die corresponding to a Fortran module. */ |
9102 | ||
9103 | static void | |
9104 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9105 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9106 | { |
530e8392 KB |
9107 | /* Add a symbol for the namespace. */ |
9108 | ||
9109 | add_partial_symbol (pdi, cu); | |
9110 | ||
f55ee35c | 9111 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9112 | |
9113 | if (pdi->has_children) | |
cdc07690 | 9114 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9115 | } |
9116 | ||
b1dc1806 XR |
9117 | /* Read a partial die corresponding to a subprogram or an inlined |
9118 | subprogram and create a partial symbol for that subprogram. | |
9119 | When the CU language allows it, this routine also defines a partial | |
9120 | symbol for each nested subprogram that this subprogram contains. | |
9121 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9122 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9123 | |
cdc07690 YQ |
9124 | PDI may also be a lexical block, in which case we simply search |
9125 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9126 | Again, this is only performed when the CU language allows this |
9127 | type of definitions. */ | |
9128 | ||
9129 | static void | |
9130 | add_partial_subprogram (struct partial_die_info *pdi, | |
9131 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9132 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9133 | { |
b1dc1806 | 9134 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9135 | { |
9136 | if (pdi->has_pc_info) | |
9137 | { | |
9138 | if (pdi->lowpc < *lowpc) | |
9139 | *lowpc = pdi->lowpc; | |
9140 | if (pdi->highpc > *highpc) | |
9141 | *highpc = pdi->highpc; | |
cdc07690 | 9142 | if (set_addrmap) |
5734ee8b | 9143 | { |
518817b3 | 9144 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9145 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9146 | CORE_ADDR baseaddr; | |
b926417a TT |
9147 | CORE_ADDR this_highpc; |
9148 | CORE_ADDR this_lowpc; | |
5734ee8b DJ |
9149 | |
9150 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9151 | SECT_OFF_TEXT (objfile)); | |
b926417a TT |
9152 | this_lowpc |
9153 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9154 | pdi->lowpc + baseaddr) | |
9155 | - baseaddr); | |
9156 | this_highpc | |
9157 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9158 | pdi->highpc + baseaddr) | |
9159 | - baseaddr); | |
d320c2b5 | 9160 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 9161 | this_lowpc, this_highpc - 1, |
9291a0cd | 9162 | cu->per_cu->v.psymtab); |
5734ee8b | 9163 | } |
481860b3 GB |
9164 | } |
9165 | ||
9166 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9167 | { | |
bc30ff58 | 9168 | if (!pdi->is_declaration) |
e8d05480 JB |
9169 | /* Ignore subprogram DIEs that do not have a name, they are |
9170 | illegal. Do not emit a complaint at this point, we will | |
9171 | do so when we convert this psymtab into a symtab. */ | |
9172 | if (pdi->name) | |
9173 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9174 | } |
9175 | } | |
6e70227d | 9176 | |
bc30ff58 JB |
9177 | if (! pdi->has_children) |
9178 | return; | |
9179 | ||
9180 | if (cu->language == language_ada) | |
9181 | { | |
9182 | pdi = pdi->die_child; | |
9183 | while (pdi != NULL) | |
9184 | { | |
52356b79 | 9185 | pdi->fixup (cu); |
bc30ff58 | 9186 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9187 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9188 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9189 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9190 | pdi = pdi->die_sibling; |
9191 | } | |
9192 | } | |
9193 | } | |
9194 | ||
91c24f0a DC |
9195 | /* Read a partial die corresponding to an enumeration type. */ |
9196 | ||
72bf9492 DJ |
9197 | static void |
9198 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9199 | struct dwarf2_cu *cu) | |
91c24f0a | 9200 | { |
72bf9492 | 9201 | struct partial_die_info *pdi; |
91c24f0a DC |
9202 | |
9203 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9204 | add_partial_symbol (enum_pdi, cu); |
9205 | ||
9206 | pdi = enum_pdi->die_child; | |
9207 | while (pdi) | |
91c24f0a | 9208 | { |
72bf9492 | 9209 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9210 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9211 | else |
72bf9492 DJ |
9212 | add_partial_symbol (pdi, cu); |
9213 | pdi = pdi->die_sibling; | |
91c24f0a | 9214 | } |
91c24f0a DC |
9215 | } |
9216 | ||
6caca83c CC |
9217 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9218 | ||
9219 | static unsigned int | |
d521ce57 | 9220 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9221 | { |
9222 | unsigned int bytes_read; | |
9223 | ||
9224 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9225 | } | |
9226 | ||
685af9cd TT |
9227 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9228 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9229 | ||
4bb7a0a7 DJ |
9230 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9231 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9232 | the initial number. */ | |
9233 | ||
9234 | static struct abbrev_info * | |
685af9cd TT |
9235 | peek_die_abbrev (const die_reader_specs &reader, |
9236 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9237 | { |
685af9cd | 9238 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9239 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9240 | unsigned int abbrev_number |
9241 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9242 | |
9243 | if (abbrev_number == 0) | |
9244 | return NULL; | |
9245 | ||
685af9cd | 9246 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9247 | if (!abbrev) |
9248 | { | |
422b9917 | 9249 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9250 | " at offset %s [in module %s]"), |
422b9917 | 9251 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9252 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9253 | } |
9254 | ||
9255 | return abbrev; | |
9256 | } | |
9257 | ||
93311388 DE |
9258 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9259 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9260 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9261 | ||
d521ce57 TT |
9262 | static const gdb_byte * |
9263 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9264 | { |
4bb7a0a7 DJ |
9265 | while (1) |
9266 | { | |
685af9cd TT |
9267 | unsigned int bytes_read; |
9268 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9269 | ||
4bb7a0a7 DJ |
9270 | if (abbrev == NULL) |
9271 | return info_ptr + bytes_read; | |
9272 | else | |
dee91e82 | 9273 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9274 | } |
9275 | } | |
9276 | ||
93311388 DE |
9277 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9278 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9279 | abbrev corresponding to that skipped uleb128 should be passed in |
9280 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9281 | children. */ | |
9282 | ||
d521ce57 TT |
9283 | static const gdb_byte * |
9284 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9285 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9286 | { |
9287 | unsigned int bytes_read; | |
9288 | struct attribute attr; | |
dee91e82 DE |
9289 | bfd *abfd = reader->abfd; |
9290 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9291 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9292 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9293 | unsigned int form, i; |
9294 | ||
9295 | for (i = 0; i < abbrev->num_attrs; i++) | |
9296 | { | |
9297 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9298 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9299 | { | |
dee91e82 | 9300 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9301 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9302 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9303 | else |
b9502d3f | 9304 | { |
9c541725 PA |
9305 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9306 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9307 | |
9308 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9309 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9310 | else if (sibling_ptr > reader->buffer_end) |
9311 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9312 | else |
9313 | return sibling_ptr; | |
9314 | } | |
4bb7a0a7 DJ |
9315 | } |
9316 | ||
9317 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9318 | form = abbrev->attrs[i].form; | |
9319 | skip_attribute: | |
9320 | switch (form) | |
9321 | { | |
4bb7a0a7 | 9322 | case DW_FORM_ref_addr: |
ae411497 TT |
9323 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9324 | and later it is offset sized. */ | |
9325 | if (cu->header.version == 2) | |
9326 | info_ptr += cu->header.addr_size; | |
9327 | else | |
9328 | info_ptr += cu->header.offset_size; | |
9329 | break; | |
36586728 TT |
9330 | case DW_FORM_GNU_ref_alt: |
9331 | info_ptr += cu->header.offset_size; | |
9332 | break; | |
ae411497 | 9333 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9334 | info_ptr += cu->header.addr_size; |
9335 | break; | |
9336 | case DW_FORM_data1: | |
9337 | case DW_FORM_ref1: | |
9338 | case DW_FORM_flag: | |
9339 | info_ptr += 1; | |
9340 | break; | |
2dc7f7b3 | 9341 | case DW_FORM_flag_present: |
43988095 | 9342 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9343 | break; |
4bb7a0a7 DJ |
9344 | case DW_FORM_data2: |
9345 | case DW_FORM_ref2: | |
9346 | info_ptr += 2; | |
9347 | break; | |
9348 | case DW_FORM_data4: | |
9349 | case DW_FORM_ref4: | |
9350 | info_ptr += 4; | |
9351 | break; | |
9352 | case DW_FORM_data8: | |
9353 | case DW_FORM_ref8: | |
55f1336d | 9354 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9355 | info_ptr += 8; |
9356 | break; | |
0224619f JK |
9357 | case DW_FORM_data16: |
9358 | info_ptr += 16; | |
9359 | break; | |
4bb7a0a7 | 9360 | case DW_FORM_string: |
9b1c24c8 | 9361 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9362 | info_ptr += bytes_read; |
9363 | break; | |
2dc7f7b3 | 9364 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9365 | case DW_FORM_strp: |
36586728 | 9366 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9367 | info_ptr += cu->header.offset_size; |
9368 | break; | |
2dc7f7b3 | 9369 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9370 | case DW_FORM_block: |
9371 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9372 | info_ptr += bytes_read; | |
9373 | break; | |
9374 | case DW_FORM_block1: | |
9375 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9376 | break; | |
9377 | case DW_FORM_block2: | |
9378 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9379 | break; | |
9380 | case DW_FORM_block4: | |
9381 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9382 | break; | |
336d760d | 9383 | case DW_FORM_addrx: |
cf532bd1 | 9384 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9385 | case DW_FORM_sdata: |
9386 | case DW_FORM_udata: | |
9387 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9388 | case DW_FORM_GNU_addr_index: |
9389 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9390 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9391 | break; |
9392 | case DW_FORM_indirect: | |
9393 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9394 | info_ptr += bytes_read; | |
9395 | /* We need to continue parsing from here, so just go back to | |
9396 | the top. */ | |
9397 | goto skip_attribute; | |
9398 | ||
9399 | default: | |
3e43a32a MS |
9400 | error (_("Dwarf Error: Cannot handle %s " |
9401 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9402 | dwarf_form_name (form), |
9403 | bfd_get_filename (abfd)); | |
9404 | } | |
9405 | } | |
9406 | ||
9407 | if (abbrev->has_children) | |
dee91e82 | 9408 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9409 | else |
9410 | return info_ptr; | |
9411 | } | |
9412 | ||
93311388 | 9413 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9414 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9415 | |
d521ce57 | 9416 | static const gdb_byte * |
dee91e82 DE |
9417 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9418 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9419 | const gdb_byte *info_ptr) |
91c24f0a DC |
9420 | { |
9421 | /* Do we know the sibling already? */ | |
72bf9492 | 9422 | |
91c24f0a DC |
9423 | if (orig_pdi->sibling) |
9424 | return orig_pdi->sibling; | |
9425 | ||
9426 | /* Are there any children to deal with? */ | |
9427 | ||
9428 | if (!orig_pdi->has_children) | |
9429 | return info_ptr; | |
9430 | ||
4bb7a0a7 | 9431 | /* Skip the children the long way. */ |
91c24f0a | 9432 | |
dee91e82 | 9433 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9434 | } |
9435 | ||
257e7a09 | 9436 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9437 | not NULL. */ |
c906108c SS |
9438 | |
9439 | static void | |
257e7a09 YQ |
9440 | dwarf2_read_symtab (struct partial_symtab *self, |
9441 | struct objfile *objfile) | |
c906108c | 9442 | { |
ed2dc618 SM |
9443 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9444 | = get_dwarf2_per_objfile (objfile); | |
9445 | ||
257e7a09 | 9446 | if (self->readin) |
c906108c | 9447 | { |
442e4d9c | 9448 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9449 | self->filename); |
442e4d9c YQ |
9450 | } |
9451 | else | |
9452 | { | |
9453 | if (info_verbose) | |
c906108c | 9454 | { |
442e4d9c | 9455 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9456 | self->filename); |
442e4d9c | 9457 | gdb_flush (gdb_stdout); |
c906108c | 9458 | } |
c906108c | 9459 | |
442e4d9c YQ |
9460 | /* If this psymtab is constructed from a debug-only objfile, the |
9461 | has_section_at_zero flag will not necessarily be correct. We | |
9462 | can get the correct value for this flag by looking at the data | |
9463 | associated with the (presumably stripped) associated objfile. */ | |
9464 | if (objfile->separate_debug_objfile_backlink) | |
9465 | { | |
9466 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9467 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9468 | |
442e4d9c YQ |
9469 | dwarf2_per_objfile->has_section_at_zero |
9470 | = dpo_backlink->has_section_at_zero; | |
9471 | } | |
b2ab525c | 9472 | |
442e4d9c | 9473 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9474 | |
257e7a09 | 9475 | psymtab_to_symtab_1 (self); |
c906108c | 9476 | |
442e4d9c YQ |
9477 | /* Finish up the debug error message. */ |
9478 | if (info_verbose) | |
9479 | printf_filtered (_("done.\n")); | |
c906108c | 9480 | } |
95554aad | 9481 | |
ed2dc618 | 9482 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9483 | } |
9cdd5dbd DE |
9484 | \f |
9485 | /* Reading in full CUs. */ | |
c906108c | 9486 | |
10b3939b DJ |
9487 | /* Add PER_CU to the queue. */ |
9488 | ||
9489 | static void | |
95554aad TT |
9490 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9491 | enum language pretend_language) | |
10b3939b DJ |
9492 | { |
9493 | struct dwarf2_queue_item *item; | |
9494 | ||
9495 | per_cu->queued = 1; | |
8d749320 | 9496 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9497 | item->per_cu = per_cu; |
95554aad | 9498 | item->pretend_language = pretend_language; |
10b3939b DJ |
9499 | item->next = NULL; |
9500 | ||
9501 | if (dwarf2_queue == NULL) | |
9502 | dwarf2_queue = item; | |
9503 | else | |
9504 | dwarf2_queue_tail->next = item; | |
9505 | ||
9506 | dwarf2_queue_tail = item; | |
9507 | } | |
9508 | ||
89e63ee4 DE |
9509 | /* If PER_CU is not yet queued, add it to the queue. |
9510 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9511 | dependency. | |
0907af0c | 9512 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9513 | meaning either PER_CU is already queued or it is already loaded. |
9514 | ||
9515 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9516 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9517 | |
9518 | static int | |
89e63ee4 | 9519 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9520 | struct dwarf2_per_cu_data *per_cu, |
9521 | enum language pretend_language) | |
9522 | { | |
9523 | /* We may arrive here during partial symbol reading, if we need full | |
9524 | DIEs to process an unusual case (e.g. template arguments). Do | |
9525 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9526 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9527 | { |
9528 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9529 | return 1; | |
9530 | return 0; | |
9531 | } | |
9532 | ||
9533 | /* Mark the dependence relation so that we don't flush PER_CU | |
9534 | too early. */ | |
89e63ee4 DE |
9535 | if (dependent_cu != NULL) |
9536 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9537 | |
9538 | /* If it's already on the queue, we have nothing to do. */ | |
9539 | if (per_cu->queued) | |
9540 | return 0; | |
9541 | ||
9542 | /* If the compilation unit is already loaded, just mark it as | |
9543 | used. */ | |
9544 | if (per_cu->cu != NULL) | |
9545 | { | |
9546 | per_cu->cu->last_used = 0; | |
9547 | return 0; | |
9548 | } | |
9549 | ||
9550 | /* Add it to the queue. */ | |
9551 | queue_comp_unit (per_cu, pretend_language); | |
9552 | ||
9553 | return 1; | |
9554 | } | |
9555 | ||
10b3939b DJ |
9556 | /* Process the queue. */ |
9557 | ||
9558 | static void | |
ed2dc618 | 9559 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9560 | { |
9561 | struct dwarf2_queue_item *item, *next_item; | |
9562 | ||
b4f54984 | 9563 | if (dwarf_read_debug) |
45cfd468 DE |
9564 | { |
9565 | fprintf_unfiltered (gdb_stdlog, | |
9566 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9567 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9568 | } |
9569 | ||
03dd20cc DJ |
9570 | /* The queue starts out with one item, but following a DIE reference |
9571 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9572 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9573 | { | |
cc12ce38 DE |
9574 | if ((dwarf2_per_objfile->using_index |
9575 | ? !item->per_cu->v.quick->compunit_symtab | |
9576 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9577 | /* Skip dummy CUs. */ | |
9578 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9579 | { |
9580 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9581 | unsigned int debug_print_threshold; |
247f5c4f | 9582 | char buf[100]; |
f4dc4d17 | 9583 | |
247f5c4f | 9584 | if (per_cu->is_debug_types) |
f4dc4d17 | 9585 | { |
247f5c4f DE |
9586 | struct signatured_type *sig_type = |
9587 | (struct signatured_type *) per_cu; | |
9588 | ||
9d8780f0 | 9589 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9590 | hex_string (sig_type->signature), |
9d8780f0 | 9591 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9592 | /* There can be 100s of TUs. |
9593 | Only print them in verbose mode. */ | |
9594 | debug_print_threshold = 2; | |
f4dc4d17 | 9595 | } |
247f5c4f | 9596 | else |
73be47f5 | 9597 | { |
9d8780f0 SM |
9598 | sprintf (buf, "CU at offset %s", |
9599 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9600 | debug_print_threshold = 1; |
9601 | } | |
247f5c4f | 9602 | |
b4f54984 | 9603 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9604 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9605 | |
9606 | if (per_cu->is_debug_types) | |
9607 | process_full_type_unit (per_cu, item->pretend_language); | |
9608 | else | |
9609 | process_full_comp_unit (per_cu, item->pretend_language); | |
9610 | ||
b4f54984 | 9611 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9612 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9613 | } |
10b3939b DJ |
9614 | |
9615 | item->per_cu->queued = 0; | |
9616 | next_item = item->next; | |
9617 | xfree (item); | |
9618 | } | |
9619 | ||
9620 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9621 | |
b4f54984 | 9622 | if (dwarf_read_debug) |
45cfd468 DE |
9623 | { |
9624 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9625 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9626 | } |
10b3939b DJ |
9627 | } |
9628 | ||
10b3939b DJ |
9629 | /* Read in full symbols for PST, and anything it depends on. */ |
9630 | ||
c906108c | 9631 | static void |
fba45db2 | 9632 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9633 | { |
10b3939b | 9634 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9635 | int i; |
9636 | ||
95554aad TT |
9637 | if (pst->readin) |
9638 | return; | |
9639 | ||
aaa75496 | 9640 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9641 | if (!pst->dependencies[i]->readin |
9642 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9643 | { |
9644 | /* Inform about additional files that need to be read in. */ | |
9645 | if (info_verbose) | |
9646 | { | |
a3f17187 | 9647 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9648 | fputs_filtered (" ", gdb_stdout); |
9649 | wrap_here (""); | |
9650 | fputs_filtered ("and ", gdb_stdout); | |
9651 | wrap_here (""); | |
9652 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9653 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9654 | gdb_flush (gdb_stdout); |
9655 | } | |
9656 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9657 | } | |
9658 | ||
9a3c8263 | 9659 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9660 | |
9661 | if (per_cu == NULL) | |
aaa75496 JB |
9662 | { |
9663 | /* It's an include file, no symbols to read for it. | |
9664 | Everything is in the parent symtab. */ | |
9665 | pst->readin = 1; | |
9666 | return; | |
9667 | } | |
c906108c | 9668 | |
58f0c718 | 9669 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9670 | } |
9671 | ||
dee91e82 DE |
9672 | /* Trivial hash function for die_info: the hash value of a DIE |
9673 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9674 | |
dee91e82 DE |
9675 | static hashval_t |
9676 | die_hash (const void *item) | |
10b3939b | 9677 | { |
9a3c8263 | 9678 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9679 | |
9c541725 | 9680 | return to_underlying (die->sect_off); |
dee91e82 | 9681 | } |
63d06c5c | 9682 | |
dee91e82 DE |
9683 | /* Trivial comparison function for die_info structures: two DIEs |
9684 | are equal if they have the same offset. */ | |
98bfdba5 | 9685 | |
dee91e82 DE |
9686 | static int |
9687 | die_eq (const void *item_lhs, const void *item_rhs) | |
9688 | { | |
9a3c8263 SM |
9689 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9690 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9691 | |
9c541725 | 9692 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9693 | } |
c906108c | 9694 | |
dee91e82 DE |
9695 | /* die_reader_func for load_full_comp_unit. |
9696 | This is identical to read_signatured_type_reader, | |
9697 | but is kept separate for now. */ | |
c906108c | 9698 | |
dee91e82 DE |
9699 | static void |
9700 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9701 | const gdb_byte *info_ptr, |
dee91e82 DE |
9702 | struct die_info *comp_unit_die, |
9703 | int has_children, | |
9704 | void *data) | |
9705 | { | |
9706 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9707 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9708 | |
dee91e82 DE |
9709 | gdb_assert (cu->die_hash == NULL); |
9710 | cu->die_hash = | |
9711 | htab_create_alloc_ex (cu->header.length / 12, | |
9712 | die_hash, | |
9713 | die_eq, | |
9714 | NULL, | |
9715 | &cu->comp_unit_obstack, | |
9716 | hashtab_obstack_allocate, | |
9717 | dummy_obstack_deallocate); | |
e142c38c | 9718 | |
dee91e82 DE |
9719 | if (has_children) |
9720 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9721 | &info_ptr, comp_unit_die); | |
9722 | cu->dies = comp_unit_die; | |
9723 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9724 | |
9725 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9726 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9727 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9728 | or we won't be able to build types correctly. |
9729 | Similarly, if we do not read the producer, we can not apply | |
9730 | producer-specific interpretation. */ | |
95554aad | 9731 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9732 | } |
10b3939b | 9733 | |
dee91e82 | 9734 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9735 | |
dee91e82 | 9736 | static void |
95554aad | 9737 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9738 | bool skip_partial, |
95554aad | 9739 | enum language pretend_language) |
dee91e82 | 9740 | { |
3019eac3 | 9741 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9742 | |
58f0c718 | 9743 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9744 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9745 | } |
9746 | ||
3da10d80 KS |
9747 | /* Add a DIE to the delayed physname list. */ |
9748 | ||
9749 | static void | |
9750 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9751 | const char *name, struct die_info *die, | |
9752 | struct dwarf2_cu *cu) | |
9753 | { | |
9754 | struct delayed_method_info mi; | |
9755 | mi.type = type; | |
9756 | mi.fnfield_index = fnfield_index; | |
9757 | mi.index = index; | |
9758 | mi.name = name; | |
9759 | mi.die = die; | |
c89b44cd | 9760 | cu->method_list.push_back (mi); |
3da10d80 KS |
9761 | } |
9762 | ||
3693fdb3 PA |
9763 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9764 | "const" / "volatile". If so, decrements LEN by the length of the | |
9765 | modifier and return true. Otherwise return false. */ | |
9766 | ||
9767 | template<size_t N> | |
9768 | static bool | |
9769 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9770 | { | |
9771 | size_t mod_len = sizeof (mod) - 1; | |
9772 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9773 | { | |
9774 | len -= mod_len; | |
9775 | return true; | |
9776 | } | |
9777 | return false; | |
9778 | } | |
9779 | ||
3da10d80 KS |
9780 | /* Compute the physnames of any methods on the CU's method list. |
9781 | ||
9782 | The computation of method physnames is delayed in order to avoid the | |
9783 | (bad) condition that one of the method's formal parameters is of an as yet | |
9784 | incomplete type. */ | |
9785 | ||
9786 | static void | |
9787 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9788 | { | |
3693fdb3 | 9789 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9790 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9791 | return; |
9792 | gdb_assert (cu->language == language_cplus); | |
9793 | ||
52941706 | 9794 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9795 | { |
1d06ead6 | 9796 | const char *physname; |
3da10d80 | 9797 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9798 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9799 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9800 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9801 | = physname ? physname : ""; |
3693fdb3 PA |
9802 | |
9803 | /* Since there's no tag to indicate whether a method is a | |
9804 | const/volatile overload, extract that information out of the | |
9805 | demangled name. */ | |
9806 | if (physname != NULL) | |
9807 | { | |
9808 | size_t len = strlen (physname); | |
9809 | ||
9810 | while (1) | |
9811 | { | |
9812 | if (physname[len] == ')') /* shortcut */ | |
9813 | break; | |
9814 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9815 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9816 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9817 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9818 | else |
9819 | break; | |
9820 | } | |
9821 | } | |
3da10d80 | 9822 | } |
c89b44cd TT |
9823 | |
9824 | /* The list is no longer needed. */ | |
9825 | cu->method_list.clear (); | |
3da10d80 KS |
9826 | } |
9827 | ||
a766d390 DE |
9828 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9829 | and it's not clear if/how imported objects will appear. | |
9830 | To keep Go support simple until that's worked out, | |
9831 | go back through what we've read and create something usable. | |
9832 | We could do this while processing each DIE, and feels kinda cleaner, | |
9833 | but that way is more invasive. | |
9834 | This is to, for example, allow the user to type "p var" or "b main" | |
9835 | without having to specify the package name, and allow lookups | |
9836 | of module.object to work in contexts that use the expression | |
9837 | parser. */ | |
9838 | ||
9839 | static void | |
9840 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9841 | { | |
9842 | char *package_name = NULL; | |
9843 | struct pending *list; | |
9844 | int i; | |
9845 | ||
c24bdb02 | 9846 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9847 | list != NULL; |
9848 | list = list->next) | |
a766d390 DE |
9849 | { |
9850 | for (i = 0; i < list->nsyms; ++i) | |
9851 | { | |
9852 | struct symbol *sym = list->symbol[i]; | |
9853 | ||
9854 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9855 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9856 | { | |
9857 | char *this_package_name = go_symbol_package_name (sym); | |
9858 | ||
9859 | if (this_package_name == NULL) | |
9860 | continue; | |
9861 | if (package_name == NULL) | |
9862 | package_name = this_package_name; | |
9863 | else | |
9864 | { | |
518817b3 SM |
9865 | struct objfile *objfile |
9866 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9867 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9868 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9869 | (symbol_symtab (sym) != NULL |
9870 | ? symtab_to_filename_for_display | |
9871 | (symbol_symtab (sym)) | |
e3b94546 | 9872 | : objfile_name (objfile)), |
a766d390 DE |
9873 | this_package_name, package_name); |
9874 | xfree (this_package_name); | |
9875 | } | |
9876 | } | |
9877 | } | |
9878 | } | |
9879 | ||
9880 | if (package_name != NULL) | |
9881 | { | |
518817b3 | 9882 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9883 | const char *saved_package_name |
021887d8 | 9884 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name); |
19f392bc UW |
9885 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9886 | saved_package_name); | |
a766d390 DE |
9887 | struct symbol *sym; |
9888 | ||
e623cf5d | 9889 | sym = allocate_symbol (objfile); |
f85f34ed | 9890 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9891 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9892 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9893 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9894 | e.g., "main" finds the "main" module and not C's main(). */ | |
9895 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9896 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9897 | SYMBOL_TYPE (sym) = type; |
9898 | ||
c24bdb02 | 9899 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9900 | |
9901 | xfree (package_name); | |
9902 | } | |
9903 | } | |
9904 | ||
c9317f21 TT |
9905 | /* Allocate a fully-qualified name consisting of the two parts on the |
9906 | obstack. */ | |
9907 | ||
9908 | static const char * | |
9909 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9910 | { | |
9911 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9912 | } | |
9913 | ||
9914 | /* A helper that allocates a struct discriminant_info to attach to a | |
9915 | union type. */ | |
9916 | ||
9917 | static struct discriminant_info * | |
9918 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9919 | int default_index) | |
9920 | { | |
9921 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9922 | gdb_assert (discriminant_index == -1 |
9923 | || (discriminant_index >= 0 | |
9924 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9925 | gdb_assert (default_index == -1 |
c7b15a66 | 9926 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9927 | |
9928 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9929 | ||
9930 | struct discriminant_info *disc | |
9931 | = ((struct discriminant_info *) | |
9932 | TYPE_ZALLOC (type, | |
9933 | offsetof (struct discriminant_info, discriminants) | |
9934 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9935 | disc->default_index = default_index; | |
9936 | disc->discriminant_index = discriminant_index; | |
9937 | ||
9938 | struct dynamic_prop prop; | |
9939 | prop.kind = PROP_UNDEFINED; | |
9940 | prop.data.baton = disc; | |
9941 | ||
9942 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9943 | ||
9944 | return disc; | |
9945 | } | |
9946 | ||
9947 | /* Some versions of rustc emitted enums in an unusual way. | |
9948 | ||
9949 | Ordinary enums were emitted as unions. The first element of each | |
9950 | structure in the union was named "RUST$ENUM$DISR". This element | |
9951 | held the discriminant. | |
9952 | ||
9953 | These versions of Rust also implemented the "non-zero" | |
9954 | optimization. When the enum had two values, and one is empty and | |
9955 | the other holds a pointer that cannot be zero, the pointer is used | |
9956 | as the discriminant, with a zero value meaning the empty variant. | |
9957 | Here, the union's first member is of the form | |
9958 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9959 | where the fieldnos are the indices of the fields that should be | |
9960 | traversed in order to find the field (which may be several fields deep) | |
9961 | and the variantname is the name of the variant of the case when the | |
9962 | field is zero. | |
9963 | ||
9964 | This function recognizes whether TYPE is of one of these forms, | |
9965 | and, if so, smashes it to be a variant type. */ | |
9966 | ||
9967 | static void | |
9968 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9969 | { | |
9970 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9971 | ||
9972 | /* We don't need to deal with empty enums. */ | |
9973 | if (TYPE_NFIELDS (type) == 0) | |
9974 | return; | |
9975 | ||
9976 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9977 | if (TYPE_NFIELDS (type) == 1 | |
9978 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9979 | { | |
9980 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9981 | ||
9982 | /* Decode the field name to find the offset of the | |
9983 | discriminant. */ | |
9984 | ULONGEST bit_offset = 0; | |
9985 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9986 | while (name[0] >= '0' && name[0] <= '9') | |
9987 | { | |
9988 | char *tail; | |
9989 | unsigned long index = strtoul (name, &tail, 10); | |
9990 | name = tail; | |
9991 | if (*name != '$' | |
9992 | || index >= TYPE_NFIELDS (field_type) | |
9993 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9994 | != FIELD_LOC_KIND_BITPOS)) | |
9995 | { | |
b98664d3 | 9996 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9997 | "[in module %s]"), |
9998 | TYPE_FIELD_NAME (type, 0), | |
9999 | objfile_name (objfile)); | |
10000 | return; | |
10001 | } | |
10002 | ++name; | |
10003 | ||
10004 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
10005 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
10006 | } | |
10007 | ||
10008 | /* Make a union to hold the variants. */ | |
10009 | struct type *union_type = alloc_type (objfile); | |
10010 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10011 | TYPE_NFIELDS (union_type) = 3; | |
10012 | TYPE_FIELDS (union_type) | |
10013 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10014 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10015 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10016 | |
10017 | /* Put the discriminant must at index 0. */ | |
10018 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10019 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10020 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10021 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10022 | ||
10023 | /* The order of fields doesn't really matter, so put the real | |
10024 | field at index 1 and the data-less field at index 2. */ | |
10025 | struct discriminant_info *disc | |
10026 | = alloc_discriminant_info (union_type, 0, 1); | |
10027 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10028 | TYPE_FIELD_NAME (union_type, 1) | |
10029 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10030 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10031 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10032 | TYPE_FIELD_NAME (union_type, 1)); | |
10033 | ||
10034 | const char *dataless_name | |
10035 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10036 | name); | |
10037 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10038 | dataless_name); | |
10039 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10040 | /* NAME points into the original discriminant name, which | |
10041 | already has the correct lifetime. */ | |
10042 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10043 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10044 | disc->discriminants[2] = 0; | |
10045 | ||
10046 | /* Smash this type to be a structure type. We have to do this | |
10047 | because the type has already been recorded. */ | |
10048 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10049 | TYPE_NFIELDS (type) = 1; | |
10050 | TYPE_FIELDS (type) | |
10051 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10052 | ||
10053 | /* Install the variant part. */ | |
10054 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10055 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10056 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10057 | } | |
10058 | else if (TYPE_NFIELDS (type) == 1) | |
10059 | { | |
10060 | /* We assume that a union with a single field is a univariant | |
10061 | enum. */ | |
10062 | /* Smash this type to be a structure type. We have to do this | |
10063 | because the type has already been recorded. */ | |
10064 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10065 | ||
10066 | /* Make a union to hold the variants. */ | |
10067 | struct type *union_type = alloc_type (objfile); | |
10068 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10069 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10070 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10071 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10072 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10073 | ||
10074 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10075 | const char *variant_name | |
10076 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10077 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10078 | TYPE_NAME (field_type) | |
10079 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10080 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10081 | |
10082 | /* Install the union in the outer struct type. */ | |
10083 | TYPE_NFIELDS (type) = 1; | |
10084 | TYPE_FIELDS (type) | |
10085 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10086 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10087 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10088 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10089 | ||
10090 | alloc_discriminant_info (union_type, -1, 0); | |
10091 | } | |
10092 | else | |
10093 | { | |
10094 | struct type *disr_type = nullptr; | |
10095 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10096 | { | |
10097 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10098 | ||
a037790e TT |
10099 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10100 | { | |
10101 | /* All fields of a true enum will be structs. */ | |
10102 | return; | |
10103 | } | |
10104 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10105 | { |
10106 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10107 | disr_type = nullptr; |
c9317f21 TT |
10108 | } |
10109 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10110 | "RUST$ENUM$DISR") != 0) | |
10111 | { | |
10112 | /* Not a Rust enum. */ | |
10113 | return; | |
10114 | } | |
10115 | else | |
10116 | { | |
10117 | /* Found one. */ | |
10118 | break; | |
10119 | } | |
10120 | } | |
10121 | ||
10122 | /* If we got here without a discriminant, then it's probably | |
10123 | just a union. */ | |
10124 | if (disr_type == nullptr) | |
10125 | return; | |
10126 | ||
10127 | /* Smash this type to be a structure type. We have to do this | |
10128 | because the type has already been recorded. */ | |
10129 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10130 | ||
10131 | /* Make a union to hold the variants. */ | |
10132 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10133 | struct type *union_type = alloc_type (objfile); | |
10134 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10135 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10136 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10137 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10138 | TYPE_FIELDS (union_type) |
10139 | = (struct field *) TYPE_ZALLOC (union_type, | |
10140 | (TYPE_NFIELDS (union_type) | |
10141 | * sizeof (struct field))); | |
10142 | ||
10143 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10144 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10145 | ||
10146 | /* Install the discriminant at index 0 in the union. */ | |
10147 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10148 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10149 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10150 | ||
10151 | /* Install the union in the outer struct type. */ | |
10152 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10153 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10154 | TYPE_NFIELDS (type) = 1; | |
10155 | ||
10156 | /* Set the size and offset of the union type. */ | |
10157 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10158 | ||
10159 | /* We need a way to find the correct discriminant given a | |
10160 | variant name. For convenience we build a map here. */ | |
10161 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10162 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10163 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10164 | { | |
10165 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10166 | { | |
10167 | const char *name | |
10168 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10169 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10170 | } | |
10171 | } | |
10172 | ||
10173 | int n_fields = TYPE_NFIELDS (union_type); | |
10174 | struct discriminant_info *disc | |
10175 | = alloc_discriminant_info (union_type, 0, -1); | |
10176 | /* Skip the discriminant here. */ | |
10177 | for (int i = 1; i < n_fields; ++i) | |
10178 | { | |
10179 | /* Find the final word in the name of this variant's type. | |
10180 | That name can be used to look up the correct | |
10181 | discriminant. */ | |
10182 | const char *variant_name | |
10183 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10184 | i))); | |
10185 | ||
10186 | auto iter = discriminant_map.find (variant_name); | |
10187 | if (iter != discriminant_map.end ()) | |
10188 | disc->discriminants[i] = iter->second; | |
10189 | ||
bedda9ac | 10190 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10191 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10192 | if (TYPE_NFIELDS (sub_type) > 0) |
10193 | { | |
10194 | --TYPE_NFIELDS (sub_type); | |
10195 | ++TYPE_FIELDS (sub_type); | |
10196 | } | |
c9317f21 TT |
10197 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10198 | TYPE_NAME (sub_type) | |
10199 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10200 | TYPE_NAME (type), variant_name); | |
10201 | } | |
10202 | } | |
10203 | } | |
10204 | ||
10205 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10206 | ||
10207 | static void | |
10208 | rust_union_quirks (struct dwarf2_cu *cu) | |
10209 | { | |
10210 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10211 | for (type *type_ : cu->rust_unions) |
10212 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10213 | /* We don't need this any more. */ |
10214 | cu->rust_unions.clear (); | |
c9317f21 TT |
10215 | } |
10216 | ||
95554aad TT |
10217 | /* Return the symtab for PER_CU. This works properly regardless of |
10218 | whether we're using the index or psymtabs. */ | |
10219 | ||
43f3e411 DE |
10220 | static struct compunit_symtab * |
10221 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10222 | { |
ed2dc618 | 10223 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10224 | ? per_cu->v.quick->compunit_symtab |
10225 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10226 | } |
10227 | ||
10228 | /* A helper function for computing the list of all symbol tables | |
10229 | included by PER_CU. */ | |
10230 | ||
10231 | static void | |
4c39bc03 | 10232 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10233 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10234 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10235 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10236 | { |
10237 | void **slot; | |
10238 | int ix; | |
43f3e411 | 10239 | struct compunit_symtab *cust; |
95554aad TT |
10240 | struct dwarf2_per_cu_data *iter; |
10241 | ||
10242 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10243 | if (*slot != NULL) | |
10244 | { | |
10245 | /* This inclusion and its children have been processed. */ | |
10246 | return; | |
10247 | } | |
10248 | ||
10249 | *slot = per_cu; | |
10250 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10251 | cust = get_compunit_symtab (per_cu); |
10252 | if (cust != NULL) | |
ec94af83 DE |
10253 | { |
10254 | /* If this is a type unit only add its symbol table if we haven't | |
10255 | seen it yet (type unit per_cu's can share symtabs). */ | |
10256 | if (per_cu->is_debug_types) | |
10257 | { | |
43f3e411 | 10258 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10259 | if (*slot == NULL) |
10260 | { | |
43f3e411 | 10261 | *slot = cust; |
4c39bc03 | 10262 | result->push_back (cust); |
43f3e411 DE |
10263 | if (cust->user == NULL) |
10264 | cust->user = immediate_parent; | |
ec94af83 DE |
10265 | } |
10266 | } | |
10267 | else | |
f9125b6c | 10268 | { |
4c39bc03 | 10269 | result->push_back (cust); |
43f3e411 DE |
10270 | if (cust->user == NULL) |
10271 | cust->user = immediate_parent; | |
f9125b6c | 10272 | } |
ec94af83 | 10273 | } |
95554aad TT |
10274 | |
10275 | for (ix = 0; | |
796a7ff8 | 10276 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10277 | ++ix) |
ec94af83 DE |
10278 | { |
10279 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10280 | all_type_symtabs, iter, cust); |
ec94af83 | 10281 | } |
95554aad TT |
10282 | } |
10283 | ||
43f3e411 | 10284 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10285 | PER_CU. */ |
10286 | ||
10287 | static void | |
43f3e411 | 10288 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10289 | { |
f4dc4d17 DE |
10290 | gdb_assert (! per_cu->is_debug_types); |
10291 | ||
796a7ff8 | 10292 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10293 | { |
10294 | int ix, len; | |
ec94af83 | 10295 | struct dwarf2_per_cu_data *per_cu_iter; |
4c39bc03 | 10296 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10297 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10298 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10299 | |
10300 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10301 | if (cust == NULL) |
95554aad TT |
10302 | return; |
10303 | ||
10304 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10305 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10306 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10307 | NULL, xcalloc, xfree); | |
95554aad TT |
10308 | |
10309 | for (ix = 0; | |
796a7ff8 | 10310 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10311 | ix, per_cu_iter); |
95554aad | 10312 | ++ix) |
ec94af83 DE |
10313 | { |
10314 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10315 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10316 | cust); |
ec94af83 | 10317 | } |
95554aad | 10318 | |
ec94af83 | 10319 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10320 | len = result_symtabs.size (); |
43f3e411 | 10321 | cust->includes |
ed2dc618 | 10322 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10323 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10324 | memcpy (cust->includes, result_symtabs.data (), |
10325 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10326 | cust->includes[len] = NULL; |
95554aad | 10327 | |
95554aad | 10328 | htab_delete (all_children); |
ec94af83 | 10329 | htab_delete (all_type_symtabs); |
95554aad TT |
10330 | } |
10331 | } | |
10332 | ||
10333 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10334 | read. */ | |
10335 | ||
10336 | static void | |
ed2dc618 | 10337 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10338 | { |
71b73764 | 10339 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10340 | { |
10341 | if (! iter->is_debug_types) | |
43f3e411 | 10342 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10343 | } |
95554aad | 10344 | |
c5d0225d | 10345 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10346 | } |
10347 | ||
9cdd5dbd | 10348 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10349 | already been loaded into memory. */ |
10350 | ||
10351 | static void | |
95554aad TT |
10352 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10353 | enum language pretend_language) | |
10b3939b | 10354 | { |
10b3939b | 10355 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10356 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10357 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10358 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10359 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10360 | struct compunit_symtab *cust; |
10b3939b | 10361 | CORE_ADDR baseaddr; |
4359dff1 | 10362 | struct block *static_block; |
3e29f34a | 10363 | CORE_ADDR addr; |
10b3939b DJ |
10364 | |
10365 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10366 | ||
c89b44cd TT |
10367 | /* Clear the list here in case something was left over. */ |
10368 | cu->method_list.clear (); | |
10b3939b | 10369 | |
95554aad TT |
10370 | cu->language = pretend_language; |
10371 | cu->language_defn = language_def (cu->language); | |
10372 | ||
c906108c | 10373 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10374 | process_die (cu->dies, cu); |
c906108c | 10375 | |
a766d390 DE |
10376 | /* For now fudge the Go package. */ |
10377 | if (cu->language == language_go) | |
10378 | fixup_go_packaging (cu); | |
10379 | ||
3da10d80 KS |
10380 | /* Now that we have processed all the DIEs in the CU, all the types |
10381 | should be complete, and it should now be safe to compute all of the | |
10382 | physnames. */ | |
10383 | compute_delayed_physnames (cu); | |
3da10d80 | 10384 | |
c9317f21 TT |
10385 | if (cu->language == language_rust) |
10386 | rust_union_quirks (cu); | |
10387 | ||
fae299cd DC |
10388 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10389 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10390 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10391 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10392 | |
3e29f34a | 10393 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10394 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10395 | |
10396 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10397 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10398 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10399 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10400 | this comp unit. */ | |
10401 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10402 | ||
c24bdb02 | 10403 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10404 | SECT_OFF_TEXT (objfile), |
10405 | 0); | |
c906108c | 10406 | |
43f3e411 | 10407 | if (cust != NULL) |
c906108c | 10408 | { |
df15bd07 | 10409 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10410 | |
8be455d7 JK |
10411 | /* Set symtab language to language from DW_AT_language. If the |
10412 | compilation is from a C file generated by language preprocessors, do | |
10413 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10414 | if (!(cu->language == language_c |
40e3ad0e | 10415 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10416 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10417 | |
10418 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10419 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10420 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10421 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10422 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10423 | |
10424 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10425 | needed, it would be wrong due to missing DW_AT_producer there. | |
10426 | ||
10427 | Still one can confuse GDB by using non-standard GCC compilation | |
10428 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10429 | */ | |
ab260dad | 10430 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10431 | cust->locations_valid = 1; |
e0d00bc7 JK |
10432 | |
10433 | if (gcc_4_minor >= 5) | |
43f3e411 | 10434 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10435 | |
43f3e411 | 10436 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10437 | } |
9291a0cd TT |
10438 | |
10439 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10440 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10441 | else |
10442 | { | |
10443 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10444 | pst->compunit_symtab = cust; |
9291a0cd TT |
10445 | pst->readin = 1; |
10446 | } | |
c906108c | 10447 | |
95554aad | 10448 | /* Push it for inclusion processing later. */ |
c5d0225d | 10449 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10450 | |
10451 | /* Not needed any more. */ | |
c24bdb02 | 10452 | cu->reset_builder (); |
f4dc4d17 | 10453 | } |
45cfd468 | 10454 | |
f4dc4d17 DE |
10455 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10456 | already been loaded into memory. */ | |
10457 | ||
10458 | static void | |
10459 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10460 | enum language pretend_language) | |
10461 | { | |
10462 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10463 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10464 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10465 | struct compunit_symtab *cust; |
0186c6a7 DE |
10466 | struct signatured_type *sig_type; |
10467 | ||
10468 | gdb_assert (per_cu->is_debug_types); | |
10469 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10470 | |
c89b44cd TT |
10471 | /* Clear the list here in case something was left over. */ |
10472 | cu->method_list.clear (); | |
f4dc4d17 | 10473 | |
f4dc4d17 DE |
10474 | cu->language = pretend_language; |
10475 | cu->language_defn = language_def (cu->language); | |
10476 | ||
10477 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10478 | process_die (cu->dies, cu); | |
10479 | ||
10480 | /* For now fudge the Go package. */ | |
10481 | if (cu->language == language_go) | |
10482 | fixup_go_packaging (cu); | |
10483 | ||
10484 | /* Now that we have processed all the DIEs in the CU, all the types | |
10485 | should be complete, and it should now be safe to compute all of the | |
10486 | physnames. */ | |
10487 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10488 | |
c9317f21 TT |
10489 | if (cu->language == language_rust) |
10490 | rust_union_quirks (cu); | |
10491 | ||
f4dc4d17 DE |
10492 | /* TUs share symbol tables. |
10493 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10494 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10495 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10496 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10497 | { |
c24bdb02 KS |
10498 | buildsym_compunit *builder = cu->get_builder (); |
10499 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10500 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10501 | |
43f3e411 | 10502 | if (cust != NULL) |
f4dc4d17 DE |
10503 | { |
10504 | /* Set symtab language to language from DW_AT_language. If the | |
10505 | compilation is from a C file generated by language preprocessors, | |
10506 | do not set the language if it was already deduced by | |
10507 | start_subfile. */ | |
43f3e411 DE |
10508 | if (!(cu->language == language_c |
10509 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10510 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10511 | } |
10512 | } | |
10513 | else | |
10514 | { | |
c24bdb02 | 10515 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10516 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10517 | } |
10518 | ||
10519 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10520 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10521 | else |
10522 | { | |
10523 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10524 | pst->compunit_symtab = cust; |
f4dc4d17 | 10525 | pst->readin = 1; |
45cfd468 | 10526 | } |
804d2729 TT |
10527 | |
10528 | /* Not needed any more. */ | |
c24bdb02 | 10529 | cu->reset_builder (); |
c906108c SS |
10530 | } |
10531 | ||
95554aad TT |
10532 | /* Process an imported unit DIE. */ |
10533 | ||
10534 | static void | |
10535 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10536 | { | |
10537 | struct attribute *attr; | |
10538 | ||
f4dc4d17 DE |
10539 | /* For now we don't handle imported units in type units. */ |
10540 | if (cu->per_cu->is_debug_types) | |
10541 | { | |
10542 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10543 | " supported in type units [in module %s]"), | |
518817b3 | 10544 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10545 | } |
10546 | ||
95554aad TT |
10547 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10548 | if (attr != NULL) | |
10549 | { | |
9c541725 PA |
10550 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10551 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10552 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10553 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10554 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10555 | |
69d751e3 | 10556 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10557 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10558 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10559 | |
796a7ff8 | 10560 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10561 | per_cu); |
10562 | } | |
10563 | } | |
10564 | ||
4c8aa72d PA |
10565 | /* RAII object that represents a process_die scope: i.e., |
10566 | starts/finishes processing a DIE. */ | |
10567 | class process_die_scope | |
adde2bff | 10568 | { |
4c8aa72d PA |
10569 | public: |
10570 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10571 | : m_die (die), m_cu (cu) | |
10572 | { | |
10573 | /* We should only be processing DIEs not already in process. */ | |
10574 | gdb_assert (!m_die->in_process); | |
10575 | m_die->in_process = true; | |
10576 | } | |
8c3cb9fa | 10577 | |
4c8aa72d PA |
10578 | ~process_die_scope () |
10579 | { | |
10580 | m_die->in_process = false; | |
10581 | ||
10582 | /* If we're done processing the DIE for the CU that owns the line | |
10583 | header, we don't need the line header anymore. */ | |
10584 | if (m_cu->line_header_die_owner == m_die) | |
10585 | { | |
10586 | delete m_cu->line_header; | |
10587 | m_cu->line_header = NULL; | |
10588 | m_cu->line_header_die_owner = NULL; | |
10589 | } | |
10590 | } | |
10591 | ||
10592 | private: | |
10593 | die_info *m_die; | |
10594 | dwarf2_cu *m_cu; | |
10595 | }; | |
adde2bff | 10596 | |
c906108c SS |
10597 | /* Process a die and its children. */ |
10598 | ||
10599 | static void | |
e7c27a73 | 10600 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10601 | { |
4c8aa72d | 10602 | process_die_scope scope (die, cu); |
adde2bff | 10603 | |
c906108c SS |
10604 | switch (die->tag) |
10605 | { | |
10606 | case DW_TAG_padding: | |
10607 | break; | |
10608 | case DW_TAG_compile_unit: | |
95554aad | 10609 | case DW_TAG_partial_unit: |
e7c27a73 | 10610 | read_file_scope (die, cu); |
c906108c | 10611 | break; |
348e048f DE |
10612 | case DW_TAG_type_unit: |
10613 | read_type_unit_scope (die, cu); | |
10614 | break; | |
c906108c | 10615 | case DW_TAG_subprogram: |
c906108c | 10616 | case DW_TAG_inlined_subroutine: |
edb3359d | 10617 | read_func_scope (die, cu); |
c906108c SS |
10618 | break; |
10619 | case DW_TAG_lexical_block: | |
14898363 L |
10620 | case DW_TAG_try_block: |
10621 | case DW_TAG_catch_block: | |
e7c27a73 | 10622 | read_lexical_block_scope (die, cu); |
c906108c | 10623 | break; |
216f72a1 | 10624 | case DW_TAG_call_site: |
96408a79 SA |
10625 | case DW_TAG_GNU_call_site: |
10626 | read_call_site_scope (die, cu); | |
10627 | break; | |
c906108c | 10628 | case DW_TAG_class_type: |
680b30c7 | 10629 | case DW_TAG_interface_type: |
c906108c SS |
10630 | case DW_TAG_structure_type: |
10631 | case DW_TAG_union_type: | |
134d01f1 | 10632 | process_structure_scope (die, cu); |
c906108c SS |
10633 | break; |
10634 | case DW_TAG_enumeration_type: | |
134d01f1 | 10635 | process_enumeration_scope (die, cu); |
c906108c | 10636 | break; |
134d01f1 | 10637 | |
f792889a DJ |
10638 | /* These dies have a type, but processing them does not create |
10639 | a symbol or recurse to process the children. Therefore we can | |
10640 | read them on-demand through read_type_die. */ | |
c906108c | 10641 | case DW_TAG_subroutine_type: |
72019c9c | 10642 | case DW_TAG_set_type: |
c906108c | 10643 | case DW_TAG_array_type: |
c906108c | 10644 | case DW_TAG_pointer_type: |
c906108c | 10645 | case DW_TAG_ptr_to_member_type: |
c906108c | 10646 | case DW_TAG_reference_type: |
4297a3f0 | 10647 | case DW_TAG_rvalue_reference_type: |
c906108c | 10648 | case DW_TAG_string_type: |
c906108c | 10649 | break; |
134d01f1 | 10650 | |
c906108c | 10651 | case DW_TAG_base_type: |
a02abb62 | 10652 | case DW_TAG_subrange_type: |
cb249c71 | 10653 | case DW_TAG_typedef: |
134d01f1 DJ |
10654 | /* Add a typedef symbol for the type definition, if it has a |
10655 | DW_AT_name. */ | |
f792889a | 10656 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10657 | break; |
c906108c | 10658 | case DW_TAG_common_block: |
e7c27a73 | 10659 | read_common_block (die, cu); |
c906108c SS |
10660 | break; |
10661 | case DW_TAG_common_inclusion: | |
10662 | break; | |
d9fa45fe | 10663 | case DW_TAG_namespace: |
9068261f | 10664 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10665 | read_namespace (die, cu); |
d9fa45fe | 10666 | break; |
5d7cb8df | 10667 | case DW_TAG_module: |
9068261f | 10668 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10669 | read_module (die, cu); |
10670 | break; | |
d9fa45fe | 10671 | case DW_TAG_imported_declaration: |
9068261f | 10672 | cu->processing_has_namespace_info = true; |
74921315 KS |
10673 | if (read_namespace_alias (die, cu)) |
10674 | break; | |
86a73007 TT |
10675 | /* The declaration is not a global namespace alias. */ |
10676 | /* Fall through. */ | |
d9fa45fe | 10677 | case DW_TAG_imported_module: |
9068261f | 10678 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10679 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10680 | || cu->language != language_fortran)) | |
b98664d3 | 10681 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10682 | dwarf_tag_name (die->tag)); |
10683 | read_import_statement (die, cu); | |
d9fa45fe | 10684 | break; |
95554aad TT |
10685 | |
10686 | case DW_TAG_imported_unit: | |
10687 | process_imported_unit_die (die, cu); | |
10688 | break; | |
10689 | ||
71a3c369 TT |
10690 | case DW_TAG_variable: |
10691 | read_variable (die, cu); | |
10692 | break; | |
10693 | ||
c906108c | 10694 | default: |
e7c27a73 | 10695 | new_symbol (die, NULL, cu); |
c906108c SS |
10696 | break; |
10697 | } | |
10698 | } | |
ca69b9e6 DE |
10699 | \f |
10700 | /* DWARF name computation. */ | |
c906108c | 10701 | |
94af9270 KS |
10702 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10703 | needs to have the name of the scope prepended to the name listed in the | |
10704 | die. */ | |
10705 | ||
10706 | static int | |
10707 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10708 | { | |
1c809c68 TT |
10709 | struct attribute *attr; |
10710 | ||
94af9270 KS |
10711 | switch (die->tag) |
10712 | { | |
10713 | case DW_TAG_namespace: | |
10714 | case DW_TAG_typedef: | |
10715 | case DW_TAG_class_type: | |
10716 | case DW_TAG_interface_type: | |
10717 | case DW_TAG_structure_type: | |
10718 | case DW_TAG_union_type: | |
10719 | case DW_TAG_enumeration_type: | |
10720 | case DW_TAG_enumerator: | |
10721 | case DW_TAG_subprogram: | |
08a76f8a | 10722 | case DW_TAG_inlined_subroutine: |
94af9270 | 10723 | case DW_TAG_member: |
74921315 | 10724 | case DW_TAG_imported_declaration: |
94af9270 KS |
10725 | return 1; |
10726 | ||
10727 | case DW_TAG_variable: | |
c2b0a229 | 10728 | case DW_TAG_constant: |
94af9270 KS |
10729 | /* We only need to prefix "globally" visible variables. These include |
10730 | any variable marked with DW_AT_external or any variable that | |
10731 | lives in a namespace. [Variables in anonymous namespaces | |
10732 | require prefixing, but they are not DW_AT_external.] */ | |
10733 | ||
10734 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10735 | { | |
10736 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10737 | |
94af9270 KS |
10738 | return die_needs_namespace (die_specification (die, &spec_cu), |
10739 | spec_cu); | |
10740 | } | |
10741 | ||
1c809c68 | 10742 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10743 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10744 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10745 | return 0; |
10746 | /* A variable in a lexical block of some kind does not need a | |
10747 | namespace, even though in C++ such variables may be external | |
10748 | and have a mangled name. */ | |
10749 | if (die->parent->tag == DW_TAG_lexical_block | |
10750 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10751 | || die->parent->tag == DW_TAG_catch_block |
10752 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10753 | return 0; |
10754 | return 1; | |
94af9270 KS |
10755 | |
10756 | default: | |
10757 | return 0; | |
10758 | } | |
10759 | } | |
10760 | ||
73b9be8b KS |
10761 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10762 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10763 | defined for the given DIE. */ | |
10764 | ||
10765 | static struct attribute * | |
10766 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10767 | { | |
10768 | struct attribute *attr; | |
10769 | ||
10770 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10771 | if (attr == NULL) | |
10772 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10773 | ||
10774 | return attr; | |
10775 | } | |
10776 | ||
10777 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10778 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10779 | defined for the given DIE. */ | |
10780 | ||
10781 | static const char * | |
10782 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10783 | { | |
10784 | const char *linkage_name; | |
10785 | ||
10786 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10787 | if (linkage_name == NULL) | |
10788 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10789 | ||
10790 | return linkage_name; | |
10791 | } | |
10792 | ||
94af9270 | 10793 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10794 | compute the physname for the object, which include a method's: |
9c37b5ae | 10795 | - formal parameters (C++), |
a766d390 | 10796 | - receiver type (Go), |
a766d390 DE |
10797 | |
10798 | The term "physname" is a bit confusing. | |
10799 | For C++, for example, it is the demangled name. | |
10800 | For Go, for example, it's the mangled name. | |
94af9270 | 10801 | |
af6b7be1 JB |
10802 | For Ada, return the DIE's linkage name rather than the fully qualified |
10803 | name. PHYSNAME is ignored.. | |
10804 | ||
94af9270 KS |
10805 | The result is allocated on the objfile_obstack and canonicalized. */ |
10806 | ||
10807 | static const char * | |
15d034d0 TT |
10808 | dwarf2_compute_name (const char *name, |
10809 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10810 | int physname) |
10811 | { | |
518817b3 | 10812 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10813 | |
94af9270 KS |
10814 | if (name == NULL) |
10815 | name = dwarf2_name (die, cu); | |
10816 | ||
2ee7123e DE |
10817 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10818 | but otherwise compute it by typename_concat inside GDB. | |
10819 | FIXME: Actually this is not really true, or at least not always true. | |
10820 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10821 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10822 | will set the demangled name to the result of dwarf2_full_name, and it is |
10823 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10824 | if (cu->language == language_ada |
10825 | || (cu->language == language_fortran && physname)) | |
10826 | { | |
10827 | /* For Ada unit, we prefer the linkage name over the name, as | |
10828 | the former contains the exported name, which the user expects | |
10829 | to be able to reference. Ideally, we want the user to be able | |
10830 | to reference this entity using either natural or linkage name, | |
10831 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10832 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10833 | |
2ee7123e DE |
10834 | if (linkage_name != NULL) |
10835 | return linkage_name; | |
f55ee35c JK |
10836 | } |
10837 | ||
94af9270 KS |
10838 | /* These are the only languages we know how to qualify names in. */ |
10839 | if (name != NULL | |
9c37b5ae | 10840 | && (cu->language == language_cplus |
c44af4eb TT |
10841 | || cu->language == language_fortran || cu->language == language_d |
10842 | || cu->language == language_rust)) | |
94af9270 KS |
10843 | { |
10844 | if (die_needs_namespace (die, cu)) | |
10845 | { | |
0d5cff50 | 10846 | const char *prefix; |
34a68019 | 10847 | const char *canonical_name = NULL; |
94af9270 | 10848 | |
d7e74731 PA |
10849 | string_file buf; |
10850 | ||
94af9270 | 10851 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10852 | if (*prefix != '\0') |
10853 | { | |
f55ee35c JK |
10854 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10855 | physname, cu); | |
9a619af0 | 10856 | |
d7e74731 | 10857 | buf.puts (prefixed_name); |
94af9270 KS |
10858 | xfree (prefixed_name); |
10859 | } | |
10860 | else | |
d7e74731 | 10861 | buf.puts (name); |
94af9270 | 10862 | |
98bfdba5 PA |
10863 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10864 | as children with DW_TAG_template_type_param or | |
10865 | DW_TAG_value_type_param. If the latter, add them to the name | |
10866 | here. If the name already has template parameters, then | |
10867 | skip this step; some versions of GCC emit both, and | |
10868 | it is more efficient to use the pre-computed name. | |
10869 | ||
10870 | Something to keep in mind about this process: it is very | |
10871 | unlikely, or in some cases downright impossible, to produce | |
10872 | something that will match the mangled name of a function. | |
10873 | If the definition of the function has the same debug info, | |
10874 | we should be able to match up with it anyway. But fallbacks | |
10875 | using the minimal symbol, for instance to find a method | |
10876 | implemented in a stripped copy of libstdc++, will not work. | |
10877 | If we do not have debug info for the definition, we will have to | |
10878 | match them up some other way. | |
10879 | ||
10880 | When we do name matching there is a related problem with function | |
10881 | templates; two instantiated function templates are allowed to | |
10882 | differ only by their return types, which we do not add here. */ | |
10883 | ||
10884 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10885 | { | |
10886 | struct attribute *attr; | |
10887 | struct die_info *child; | |
10888 | int first = 1; | |
10889 | ||
10890 | die->building_fullname = 1; | |
10891 | ||
10892 | for (child = die->child; child != NULL; child = child->sibling) | |
10893 | { | |
10894 | struct type *type; | |
12df843f | 10895 | LONGEST value; |
d521ce57 | 10896 | const gdb_byte *bytes; |
98bfdba5 PA |
10897 | struct dwarf2_locexpr_baton *baton; |
10898 | struct value *v; | |
10899 | ||
10900 | if (child->tag != DW_TAG_template_type_param | |
10901 | && child->tag != DW_TAG_template_value_param) | |
10902 | continue; | |
10903 | ||
10904 | if (first) | |
10905 | { | |
d7e74731 | 10906 | buf.puts ("<"); |
98bfdba5 PA |
10907 | first = 0; |
10908 | } | |
10909 | else | |
d7e74731 | 10910 | buf.puts (", "); |
98bfdba5 PA |
10911 | |
10912 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10913 | if (attr == NULL) | |
10914 | { | |
b98664d3 | 10915 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10916 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10917 | continue; |
10918 | } | |
10919 | type = die_type (child, cu); | |
10920 | ||
10921 | if (child->tag == DW_TAG_template_type_param) | |
10922 | { | |
c1ec8cea TT |
10923 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10924 | &type_print_raw_options); | |
98bfdba5 PA |
10925 | continue; |
10926 | } | |
10927 | ||
10928 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10929 | if (attr == NULL) | |
10930 | { | |
b98664d3 | 10931 | complaint (_("template parameter missing " |
3e43a32a | 10932 | "DW_AT_const_value")); |
d7e74731 | 10933 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10934 | continue; |
10935 | } | |
10936 | ||
10937 | dwarf2_const_value_attr (attr, type, name, | |
10938 | &cu->comp_unit_obstack, cu, | |
10939 | &value, &bytes, &baton); | |
10940 | ||
10941 | if (TYPE_NOSIGN (type)) | |
10942 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10943 | changed, this can use value_print instead. */ | |
d7e74731 | 10944 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10945 | else |
10946 | { | |
10947 | struct value_print_options opts; | |
10948 | ||
10949 | if (baton != NULL) | |
10950 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10951 | baton->data, | |
10952 | baton->size, | |
10953 | baton->per_cu); | |
10954 | else if (bytes != NULL) | |
10955 | { | |
10956 | v = allocate_value (type); | |
10957 | memcpy (value_contents_writeable (v), bytes, | |
10958 | TYPE_LENGTH (type)); | |
10959 | } | |
10960 | else | |
10961 | v = value_from_longest (type, value); | |
10962 | ||
3e43a32a MS |
10963 | /* Specify decimal so that we do not depend on |
10964 | the radix. */ | |
98bfdba5 PA |
10965 | get_formatted_print_options (&opts, 'd'); |
10966 | opts.raw = 1; | |
d7e74731 | 10967 | value_print (v, &buf, &opts); |
98bfdba5 | 10968 | release_value (v); |
98bfdba5 PA |
10969 | } |
10970 | } | |
10971 | ||
10972 | die->building_fullname = 0; | |
10973 | ||
10974 | if (!first) | |
10975 | { | |
10976 | /* Close the argument list, with a space if necessary | |
10977 | (nested templates). */ | |
d7e74731 PA |
10978 | if (!buf.empty () && buf.string ().back () == '>') |
10979 | buf.puts (" >"); | |
98bfdba5 | 10980 | else |
d7e74731 | 10981 | buf.puts (">"); |
98bfdba5 PA |
10982 | } |
10983 | } | |
10984 | ||
9c37b5ae | 10985 | /* For C++ methods, append formal parameter type |
94af9270 | 10986 | information, if PHYSNAME. */ |
6e70227d | 10987 | |
94af9270 | 10988 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10989 | && cu->language == language_cplus) |
94af9270 KS |
10990 | { |
10991 | struct type *type = read_type_die (die, cu); | |
10992 | ||
d7e74731 | 10993 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10994 | &type_print_raw_options); |
94af9270 | 10995 | |
9c37b5ae | 10996 | if (cu->language == language_cplus) |
94af9270 | 10997 | { |
60430eff DJ |
10998 | /* Assume that an artificial first parameter is |
10999 | "this", but do not crash if it is not. RealView | |
11000 | marks unnamed (and thus unused) parameters as | |
11001 | artificial; there is no way to differentiate | |
11002 | the two cases. */ | |
94af9270 KS |
11003 | if (TYPE_NFIELDS (type) > 0 |
11004 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 11005 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11006 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11007 | 0)))) | |
d7e74731 | 11008 | buf.puts (" const"); |
94af9270 KS |
11009 | } |
11010 | } | |
11011 | ||
d7e74731 | 11012 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11013 | |
11014 | if (cu->language == language_cplus) | |
34a68019 | 11015 | canonical_name |
322a8516 | 11016 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11017 | &objfile->per_bfd->storage_obstack); |
11018 | ||
11019 | /* If we only computed INTERMEDIATE_NAME, or if | |
11020 | INTERMEDIATE_NAME is already canonical, then we need to | |
11021 | copy it to the appropriate obstack. */ | |
322a8516 | 11022 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
11023 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
11024 | intermediate_name); | |
34a68019 TT |
11025 | else |
11026 | name = canonical_name; | |
94af9270 KS |
11027 | } |
11028 | } | |
11029 | ||
11030 | return name; | |
11031 | } | |
11032 | ||
0114d602 DJ |
11033 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11034 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11035 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11036 | not have a name. NAME may either be from a previous call to |
11037 | dwarf2_name or NULL. | |
11038 | ||
9c37b5ae | 11039 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11040 | |
11041 | static const char * | |
15d034d0 | 11042 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11043 | { |
94af9270 KS |
11044 | return dwarf2_compute_name (name, die, cu, 0); |
11045 | } | |
0114d602 | 11046 | |
94af9270 KS |
11047 | /* Construct a physname for the given DIE in CU. NAME may either be |
11048 | from a previous call to dwarf2_name or NULL. The result will be | |
11049 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11050 | name. | |
0114d602 | 11051 | |
9c37b5ae | 11052 | The output string will be canonicalized (if C++). */ |
0114d602 | 11053 | |
94af9270 | 11054 | static const char * |
15d034d0 | 11055 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11056 | { |
518817b3 | 11057 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11058 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11059 | int need_copy = 1; |
11060 | ||
11061 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11062 | on its own. */ | |
11063 | if (!die_needs_namespace (die, cu)) | |
11064 | return dwarf2_compute_name (name, die, cu, 1); | |
11065 | ||
73b9be8b | 11066 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11067 | |
e98c9e7c TT |
11068 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11069 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11070 | if (cu->language == language_rust && mangled != NULL | |
11071 | && strchr (mangled, '{') != NULL) | |
11072 | mangled = NULL; | |
11073 | ||
900e11f9 JK |
11074 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11075 | has computed. */ | |
791afaa2 | 11076 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11077 | if (mangled != NULL) |
900e11f9 | 11078 | { |
900e11f9 | 11079 | |
59cc4834 JB |
11080 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11081 | { | |
11082 | /* Do nothing (do not demangle the symbol name). */ | |
11083 | } | |
11084 | else if (cu->language == language_go) | |
a766d390 | 11085 | { |
5e2db402 TT |
11086 | /* This is a lie, but we already lie to the caller new_symbol. |
11087 | new_symbol assumes we return the mangled name. | |
a766d390 | 11088 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11089 | } |
11090 | else | |
11091 | { | |
0eb876f5 JB |
11092 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11093 | their return type. It is easier for GDB users to search | |
11094 | for such functions as `name(params)' than `long name(params)'. | |
11095 | In such case the minimal symbol names do not match the full | |
11096 | symbol names but for template functions there is never a need | |
11097 | to look up their definition from their declaration so | |
11098 | the only disadvantage remains the minimal symbol variant | |
11099 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11100 | demangled.reset (gdb_demangle (mangled, |
11101 | (DMGL_PARAMS | DMGL_ANSI | |
11102 | | DMGL_RET_DROP))); | |
a766d390 | 11103 | } |
900e11f9 | 11104 | if (demangled) |
791afaa2 | 11105 | canon = demangled.get (); |
900e11f9 JK |
11106 | else |
11107 | { | |
11108 | canon = mangled; | |
11109 | need_copy = 0; | |
11110 | } | |
11111 | } | |
11112 | ||
11113 | if (canon == NULL || check_physname) | |
11114 | { | |
11115 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11116 | ||
11117 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11118 | { | |
11119 | /* It may not mean a bug in GDB. The compiler could also | |
11120 | compute DW_AT_linkage_name incorrectly. But in such case | |
11121 | GDB would need to be bug-to-bug compatible. */ | |
11122 | ||
b98664d3 | 11123 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11124 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11125 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11126 | objfile_name (objfile)); |
900e11f9 JK |
11127 | |
11128 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11129 | is available here - over computed PHYSNAME. It is safer | |
11130 | against both buggy GDB and buggy compilers. */ | |
11131 | ||
11132 | retval = canon; | |
11133 | } | |
11134 | else | |
11135 | { | |
11136 | retval = physname; | |
11137 | need_copy = 0; | |
11138 | } | |
11139 | } | |
11140 | else | |
11141 | retval = canon; | |
11142 | ||
11143 | if (need_copy) | |
021887d8 | 11144 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 11145 | |
900e11f9 | 11146 | return retval; |
0114d602 DJ |
11147 | } |
11148 | ||
74921315 KS |
11149 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11150 | a new symbol for it. | |
11151 | ||
11152 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11153 | ||
11154 | static int | |
11155 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11156 | { | |
11157 | struct attribute *attr; | |
11158 | ||
11159 | /* If the die does not have a name, this is not a namespace | |
11160 | alias. */ | |
11161 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11162 | if (attr != NULL) | |
11163 | { | |
11164 | int num; | |
11165 | struct die_info *d = die; | |
11166 | struct dwarf2_cu *imported_cu = cu; | |
11167 | ||
11168 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11169 | keep inspecting DIEs until we hit the underlying import. */ | |
11170 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11171 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11172 | { | |
11173 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11174 | if (attr == NULL) | |
11175 | break; | |
11176 | ||
11177 | d = follow_die_ref (d, attr, &imported_cu); | |
11178 | if (d->tag != DW_TAG_imported_declaration) | |
11179 | break; | |
11180 | } | |
11181 | ||
11182 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11183 | { | |
b98664d3 | 11184 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11185 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11186 | return 0; |
11187 | } | |
11188 | ||
11189 | if (attr != NULL) | |
11190 | { | |
11191 | struct type *type; | |
9c541725 | 11192 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11193 | |
9c541725 | 11194 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11195 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11196 | { | |
11197 | /* This declaration is a global namespace alias. Add | |
11198 | a symbol for it whose type is the aliased namespace. */ | |
11199 | new_symbol (die, type, cu); | |
11200 | return 1; | |
11201 | } | |
11202 | } | |
11203 | } | |
11204 | ||
11205 | return 0; | |
11206 | } | |
11207 | ||
22cee43f | 11208 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11209 | current context for CU. |
22cee43f PMR |
11210 | |
11211 | For Ada, imported declarations can materialize renamings, which *may* be | |
11212 | global. However it is impossible (for now?) in DWARF to distinguish | |
11213 | "external" imported declarations and "static" ones. As all imported | |
11214 | declarations seem to be static in all other languages, make them all CU-wide | |
11215 | global only in Ada. */ | |
11216 | ||
11217 | static struct using_direct ** | |
804d2729 | 11218 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11219 | { |
c24bdb02 KS |
11220 | if (cu->language == language_ada |
11221 | && cu->get_builder ()->outermost_context_p ()) | |
11222 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 11223 | else |
c24bdb02 | 11224 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
11225 | } |
11226 | ||
27aa8d6a SW |
11227 | /* Read the import statement specified by the given die and record it. */ |
11228 | ||
11229 | static void | |
11230 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11231 | { | |
518817b3 | 11232 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11233 | struct attribute *import_attr; |
32019081 | 11234 | struct die_info *imported_die, *child_die; |
de4affc9 | 11235 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11236 | const char *imported_name; |
794684b6 | 11237 | const char *imported_name_prefix; |
13387711 SW |
11238 | const char *canonical_name; |
11239 | const char *import_alias; | |
11240 | const char *imported_declaration = NULL; | |
794684b6 | 11241 | const char *import_prefix; |
eb1e02fd | 11242 | std::vector<const char *> excludes; |
13387711 | 11243 | |
27aa8d6a SW |
11244 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11245 | if (import_attr == NULL) | |
11246 | { | |
b98664d3 | 11247 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11248 | dwarf_tag_name (die->tag)); |
11249 | return; | |
11250 | } | |
11251 | ||
de4affc9 CC |
11252 | imported_cu = cu; |
11253 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11254 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11255 | if (imported_name == NULL) |
11256 | { | |
11257 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11258 | ||
11259 | The import in the following code: | |
11260 | namespace A | |
11261 | { | |
11262 | typedef int B; | |
11263 | } | |
11264 | ||
11265 | int main () | |
11266 | { | |
11267 | using A::B; | |
11268 | B b; | |
11269 | return b; | |
11270 | } | |
11271 | ||
11272 | ... | |
11273 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11274 | <52> DW_AT_decl_file : 1 | |
11275 | <53> DW_AT_decl_line : 6 | |
11276 | <54> DW_AT_import : <0x75> | |
11277 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11278 | <59> DW_AT_name : B | |
11279 | <5b> DW_AT_decl_file : 1 | |
11280 | <5c> DW_AT_decl_line : 2 | |
11281 | <5d> DW_AT_type : <0x6e> | |
11282 | ... | |
11283 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11284 | <76> DW_AT_byte_size : 4 | |
11285 | <77> DW_AT_encoding : 5 (signed) | |
11286 | ||
11287 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11288 | This case will be ignored until the gcc bug is fixed. */ | |
11289 | return; | |
11290 | } | |
11291 | ||
82856980 SW |
11292 | /* Figure out the local name after import. */ |
11293 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11294 | |
794684b6 SW |
11295 | /* Figure out where the statement is being imported to. */ |
11296 | import_prefix = determine_prefix (die, cu); | |
11297 | ||
11298 | /* Figure out what the scope of the imported die is and prepend it | |
11299 | to the name of the imported die. */ | |
de4affc9 | 11300 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11301 | |
f55ee35c JK |
11302 | if (imported_die->tag != DW_TAG_namespace |
11303 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11304 | { |
13387711 SW |
11305 | imported_declaration = imported_name; |
11306 | canonical_name = imported_name_prefix; | |
794684b6 | 11307 | } |
13387711 | 11308 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11309 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11310 | imported_name_prefix, |
11311 | (cu->language == language_d ? "." : "::"), | |
11312 | imported_name, (char *) NULL); | |
13387711 SW |
11313 | else |
11314 | canonical_name = imported_name; | |
794684b6 | 11315 | |
32019081 JK |
11316 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11317 | for (child_die = die->child; child_die && child_die->tag; | |
11318 | child_die = sibling_die (child_die)) | |
11319 | { | |
11320 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11321 | represented by an imported module entry with an import attribute | |
11322 | referring to the module and owned entries corresponding to those | |
11323 | entities that are renamed as part of being imported. */ | |
11324 | ||
11325 | if (child_die->tag != DW_TAG_imported_declaration) | |
11326 | { | |
b98664d3 | 11327 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11328 | "- DIE at %s [in module %s]"), |
11329 | sect_offset_str (child_die->sect_off), | |
11330 | objfile_name (objfile)); | |
32019081 JK |
11331 | continue; |
11332 | } | |
11333 | ||
11334 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11335 | if (import_attr == NULL) | |
11336 | { | |
b98664d3 | 11337 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11338 | dwarf_tag_name (child_die->tag)); |
11339 | continue; | |
11340 | } | |
11341 | ||
11342 | imported_cu = cu; | |
11343 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11344 | &imported_cu); | |
11345 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11346 | if (imported_name == NULL) | |
11347 | { | |
b98664d3 | 11348 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11349 | "imported name - DIE at %s [in module %s]"), |
11350 | sect_offset_str (child_die->sect_off), | |
11351 | objfile_name (objfile)); | |
32019081 JK |
11352 | continue; |
11353 | } | |
11354 | ||
eb1e02fd | 11355 | excludes.push_back (imported_name); |
32019081 JK |
11356 | |
11357 | process_die (child_die, cu); | |
11358 | } | |
11359 | ||
804d2729 | 11360 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11361 | import_prefix, |
11362 | canonical_name, | |
11363 | import_alias, | |
11364 | imported_declaration, | |
11365 | excludes, | |
11366 | 0, | |
11367 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11368 | } |
11369 | ||
5230b05a WT |
11370 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11371 | types, but gives them a size of zero. Starting with version 14, | |
11372 | ICC is compatible with GCC. */ | |
11373 | ||
9068261f | 11374 | static bool |
5230b05a WT |
11375 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11376 | { | |
11377 | if (!cu->checked_producer) | |
11378 | check_producer (cu); | |
11379 | ||
11380 | return cu->producer_is_icc_lt_14; | |
11381 | } | |
11382 | ||
eb77c9df AB |
11383 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11384 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11385 | which says that void functions should not have a DW_AT_type. */ | |
11386 | ||
11387 | static bool | |
11388 | producer_is_icc (struct dwarf2_cu *cu) | |
11389 | { | |
11390 | if (!cu->checked_producer) | |
11391 | check_producer (cu); | |
11392 | ||
11393 | return cu->producer_is_icc; | |
11394 | } | |
11395 | ||
1b80a9fa JK |
11396 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11397 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11398 | this, it was first present in GCC release 4.3.0. */ | |
11399 | ||
9068261f | 11400 | static bool |
1b80a9fa JK |
11401 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11402 | { | |
11403 | if (!cu->checked_producer) | |
11404 | check_producer (cu); | |
11405 | ||
11406 | return cu->producer_is_gcc_lt_4_3; | |
11407 | } | |
11408 | ||
d721ba37 PA |
11409 | static file_and_directory |
11410 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11411 | { |
d721ba37 PA |
11412 | file_and_directory res; |
11413 | ||
9291a0cd TT |
11414 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11415 | is not a source language identifier. */ | |
d721ba37 PA |
11416 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11417 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11418 | |
d721ba37 PA |
11419 | if (res.comp_dir == NULL |
11420 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11421 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11422 | { |
d721ba37 PA |
11423 | res.comp_dir_storage = ldirname (res.name); |
11424 | if (!res.comp_dir_storage.empty ()) | |
11425 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11426 | } |
d721ba37 | 11427 | if (res.comp_dir != NULL) |
9291a0cd TT |
11428 | { |
11429 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11430 | directory, get rid of it. */ | |
d721ba37 | 11431 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11432 | |
d721ba37 PA |
11433 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11434 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11435 | } |
11436 | ||
d721ba37 PA |
11437 | if (res.name == NULL) |
11438 | res.name = "<unknown>"; | |
11439 | ||
11440 | return res; | |
9291a0cd TT |
11441 | } |
11442 | ||
f4dc4d17 DE |
11443 | /* Handle DW_AT_stmt_list for a compilation unit. |
11444 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11445 | COMP_DIR is the compilation directory. LOWPC is passed to |
11446 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11447 | |
11448 | static void | |
11449 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11450 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11451 | { |
518817b3 SM |
11452 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11453 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11454 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11455 | struct attribute *attr; |
527f3840 JK |
11456 | struct line_header line_header_local; |
11457 | hashval_t line_header_local_hash; | |
527f3840 JK |
11458 | void **slot; |
11459 | int decode_mapping; | |
2ab95328 | 11460 | |
f4dc4d17 DE |
11461 | gdb_assert (! cu->per_cu->is_debug_types); |
11462 | ||
2ab95328 | 11463 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11464 | if (attr == NULL) |
11465 | return; | |
11466 | ||
9c541725 | 11467 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11468 | |
11469 | /* The line header hash table is only created if needed (it exists to | |
11470 | prevent redundant reading of the line table for partial_units). | |
11471 | If we're given a partial_unit, we'll need it. If we're given a | |
11472 | compile_unit, then use the line header hash table if it's already | |
11473 | created, but don't create one just yet. */ | |
11474 | ||
11475 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11476 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11477 | { |
527f3840 JK |
11478 | dwarf2_per_objfile->line_header_hash |
11479 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11480 | line_header_eq_voidp, | |
11481 | free_line_header_voidp, | |
11482 | &objfile->objfile_obstack, | |
11483 | hashtab_obstack_allocate, | |
11484 | dummy_obstack_deallocate); | |
11485 | } | |
2ab95328 | 11486 | |
9c541725 | 11487 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11488 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11489 | line_header_local_hash = line_header_hash (&line_header_local); | |
11490 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11491 | { | |
11492 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11493 | &line_header_local, | |
11494 | line_header_local_hash, NO_INSERT); | |
11495 | ||
11496 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11497 | is not present in *SLOT (since if there is something in *SLOT then | |
11498 | it will be for a partial_unit). */ | |
11499 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11500 | { |
527f3840 | 11501 | gdb_assert (*slot != NULL); |
9a3c8263 | 11502 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11503 | return; |
dee91e82 | 11504 | } |
2ab95328 | 11505 | } |
527f3840 JK |
11506 | |
11507 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11508 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11509 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11510 | if (lh == NULL) | |
527f3840 | 11511 | return; |
4c8aa72d PA |
11512 | |
11513 | cu->line_header = lh.release (); | |
11514 | cu->line_header_die_owner = die; | |
527f3840 JK |
11515 | |
11516 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11517 | slot = NULL; | |
11518 | else | |
11519 | { | |
11520 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11521 | &line_header_local, | |
11522 | line_header_local_hash, INSERT); | |
11523 | gdb_assert (slot != NULL); | |
11524 | } | |
11525 | if (slot != NULL && *slot == NULL) | |
11526 | { | |
11527 | /* This newly decoded line number information unit will be owned | |
11528 | by line_header_hash hash table. */ | |
11529 | *slot = cu->line_header; | |
4c8aa72d | 11530 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11531 | } |
11532 | else | |
11533 | { | |
11534 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11535 | may be already used by multiple CUs. Create only temporary decoded | |
11536 | line_header for this CU - it may happen at most once for each line | |
11537 | number information unit. And if we're not using line_header_hash | |
11538 | then this is what we want as well. */ | |
11539 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11540 | } |
11541 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11542 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11543 | decode_mapping); | |
fff8551c | 11544 | |
2ab95328 TT |
11545 | } |
11546 | ||
95554aad | 11547 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11548 | |
c906108c | 11549 | static void |
e7c27a73 | 11550 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11551 | { |
518817b3 SM |
11552 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11553 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11554 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11555 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11556 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11557 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11558 | struct attribute *attr; | |
c906108c | 11559 | struct die_info *child_die; |
e142c38c | 11560 | CORE_ADDR baseaddr; |
6e70227d | 11561 | |
380618d6 | 11562 | prepare_one_comp_unit (cu, die, cu->language); |
e142c38c | 11563 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11564 | |
fae299cd | 11565 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11566 | |
11567 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11568 | from finish_block. */ | |
2acceee2 | 11569 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11570 | lowpc = highpc; |
3e29f34a | 11571 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11572 | |
d721ba37 | 11573 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11574 | |
f4b8a18d KW |
11575 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11576 | standardised yet. As a workaround for the language detection we fall | |
11577 | back to the DW_AT_producer string. */ | |
11578 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11579 | cu->language = language_opencl; | |
11580 | ||
3019eac3 DE |
11581 | /* Similar hack for Go. */ |
11582 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11583 | set_cu_language (DW_LANG_Go, cu); | |
11584 | ||
c24bdb02 | 11585 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11586 | |
11587 | /* Decode line number information if present. We do this before | |
11588 | processing child DIEs, so that the line header table is available | |
11589 | for DW_AT_decl_file. */ | |
d721ba37 | 11590 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11591 | |
11592 | /* Process all dies in compilation unit. */ | |
11593 | if (die->child != NULL) | |
11594 | { | |
11595 | child_die = die->child; | |
11596 | while (child_die && child_die->tag) | |
11597 | { | |
11598 | process_die (child_die, cu); | |
11599 | child_die = sibling_die (child_die); | |
11600 | } | |
11601 | } | |
11602 | ||
11603 | /* Decode macro information, if present. Dwarf 2 macro information | |
11604 | refers to information in the line number info statement program | |
11605 | header, so we can only read it if we've read the header | |
11606 | successfully. */ | |
0af92d60 JK |
11607 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11608 | if (attr == NULL) | |
11609 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11610 | if (attr && cu->line_header) |
11611 | { | |
11612 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11613 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11614 | |
43f3e411 | 11615 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11616 | } |
11617 | else | |
11618 | { | |
11619 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11620 | if (attr && cu->line_header) | |
11621 | { | |
11622 | unsigned int macro_offset = DW_UNSND (attr); | |
11623 | ||
43f3e411 | 11624 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11625 | } |
11626 | } | |
3019eac3 DE |
11627 | } |
11628 | ||
c24bdb02 KS |
11629 | void |
11630 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11631 | { |
f4dc4d17 DE |
11632 | struct type_unit_group *tu_group; |
11633 | int first_time; | |
3019eac3 | 11634 | struct attribute *attr; |
9c541725 | 11635 | unsigned int i; |
0186c6a7 | 11636 | struct signatured_type *sig_type; |
3019eac3 | 11637 | |
f4dc4d17 | 11638 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11639 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11640 | |
c24bdb02 | 11641 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11642 | |
f4dc4d17 | 11643 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11644 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11645 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11646 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11647 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11648 | |
11649 | /* If we've already processed this stmt_list there's no real need to | |
11650 | do it again, we could fake it and just recreate the part we need | |
11651 | (file name,index -> symtab mapping). If data shows this optimization | |
11652 | is useful we can do it then. */ | |
43f3e411 | 11653 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11654 | |
11655 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11656 | debug info. */ | |
fff8551c | 11657 | line_header_up lh; |
f4dc4d17 | 11658 | if (attr != NULL) |
3019eac3 | 11659 | { |
9c541725 | 11660 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11661 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11662 | } |
11663 | if (lh == NULL) | |
11664 | { | |
11665 | if (first_time) | |
c24bdb02 | 11666 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11667 | else |
11668 | { | |
11669 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11670 | gdb_assert (m_builder == nullptr); |
804d2729 | 11671 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11672 | m_builder.reset (new struct buildsym_compunit |
11673 | (COMPUNIT_OBJFILE (cust), "", | |
11674 | COMPUNIT_DIRNAME (cust), | |
11675 | compunit_language (cust), | |
11676 | 0, cust)); | |
f4dc4d17 | 11677 | } |
f4dc4d17 | 11678 | return; |
3019eac3 DE |
11679 | } |
11680 | ||
c24bdb02 KS |
11681 | line_header = lh.release (); |
11682 | line_header_die_owner = die; | |
3019eac3 | 11683 | |
f4dc4d17 DE |
11684 | if (first_time) |
11685 | { | |
c24bdb02 | 11686 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11687 | |
1fd60fc0 DE |
11688 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11689 | still initializing it, and our caller (a few levels up) | |
11690 | process_full_type_unit still needs to know if this is the first | |
11691 | time. */ | |
11692 | ||
c24bdb02 | 11693 | tu_group->num_symtabs = line_header->file_names.size (); |
4c8aa72d | 11694 | tu_group->symtabs = XNEWVEC (struct symtab *, |
c24bdb02 | 11695 | line_header->file_names.size ()); |
3019eac3 | 11696 | |
c24bdb02 | 11697 | for (i = 0; i < line_header->file_names.size (); ++i) |
f4dc4d17 | 11698 | { |
c24bdb02 | 11699 | file_entry &fe = line_header->file_names[i]; |
3019eac3 | 11700 | |
c24bdb02 KS |
11701 | dwarf2_start_subfile (this, fe.name, |
11702 | fe.include_dir (line_header)); | |
11703 | buildsym_compunit *b = get_builder (); | |
11704 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11705 | { |
4c8aa72d PA |
11706 | /* NOTE: start_subfile will recognize when it's been |
11707 | passed a file it has already seen. So we can't | |
11708 | assume there's a simple mapping from | |
11709 | cu->line_header->file_names to subfiles, plus | |
11710 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11711 | b->get_current_subfile ()->symtab |
11712 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11713 | } |
11714 | ||
c24bdb02 | 11715 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11716 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11717 | } |
11718 | } | |
11719 | else | |
3019eac3 | 11720 | { |
c24bdb02 | 11721 | gdb_assert (m_builder == nullptr); |
804d2729 | 11722 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11723 | m_builder.reset (new struct buildsym_compunit |
11724 | (COMPUNIT_OBJFILE (cust), "", | |
11725 | COMPUNIT_DIRNAME (cust), | |
11726 | compunit_language (cust), | |
11727 | 0, cust)); | |
f4dc4d17 | 11728 | |
c24bdb02 | 11729 | for (i = 0; i < line_header->file_names.size (); ++i) |
f4dc4d17 | 11730 | { |
c24bdb02 | 11731 | file_entry &fe = line_header->file_names[i]; |
f4dc4d17 | 11732 | |
4c8aa72d | 11733 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11734 | } |
3019eac3 DE |
11735 | } |
11736 | ||
f4dc4d17 DE |
11737 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11738 | so they don't have a "real" (so to speak) symtab anyway. | |
11739 | There is later code that will assign the main symtab to all symbols | |
11740 | that don't have one. We need to handle the case of a symbol with a | |
11741 | missing symtab (DW_AT_decl_file) anyway. */ | |
11742 | } | |
3019eac3 | 11743 | |
f4dc4d17 DE |
11744 | /* Process DW_TAG_type_unit. |
11745 | For TUs we want to skip the first top level sibling if it's not the | |
11746 | actual type being defined by this TU. In this case the first top | |
11747 | level sibling is there to provide context only. */ | |
3019eac3 | 11748 | |
f4dc4d17 DE |
11749 | static void |
11750 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11751 | { | |
11752 | struct die_info *child_die; | |
3019eac3 | 11753 | |
f4dc4d17 DE |
11754 | prepare_one_comp_unit (cu, die, language_minimal); |
11755 | ||
11756 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11757 | We do this before processing child DIEs, so that the line header table | |
11758 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11759 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11760 | |
11761 | if (die->child != NULL) | |
11762 | { | |
11763 | child_die = die->child; | |
11764 | while (child_die && child_die->tag) | |
11765 | { | |
11766 | process_die (child_die, cu); | |
11767 | child_die = sibling_die (child_die); | |
11768 | } | |
11769 | } | |
3019eac3 DE |
11770 | } |
11771 | \f | |
80626a55 DE |
11772 | /* DWO/DWP files. |
11773 | ||
11774 | http://gcc.gnu.org/wiki/DebugFission | |
11775 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11776 | ||
11777 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11778 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11779 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11780 | |
11781 | static hashval_t | |
11782 | hash_dwo_file (const void *item) | |
11783 | { | |
9a3c8263 | 11784 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11785 | hashval_t hash; |
3019eac3 | 11786 | |
a2ce51a0 DE |
11787 | hash = htab_hash_string (dwo_file->dwo_name); |
11788 | if (dwo_file->comp_dir != NULL) | |
11789 | hash += htab_hash_string (dwo_file->comp_dir); | |
11790 | return hash; | |
3019eac3 DE |
11791 | } |
11792 | ||
11793 | static int | |
11794 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11795 | { | |
9a3c8263 SM |
11796 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11797 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11798 | |
a2ce51a0 DE |
11799 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11800 | return 0; | |
11801 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11802 | return lhs->comp_dir == rhs->comp_dir; | |
11803 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11804 | } |
11805 | ||
11806 | /* Allocate a hash table for DWO files. */ | |
11807 | ||
51ac9db5 | 11808 | static htab_up |
ed2dc618 | 11809 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11810 | { |
51ac9db5 SM |
11811 | auto delete_dwo_file = [] (void *item) |
11812 | { | |
11813 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11814 | ||
11815 | delete dwo_file; | |
11816 | }; | |
11817 | ||
11818 | return htab_up (htab_create_alloc_ex (41, | |
11819 | hash_dwo_file, | |
11820 | eq_dwo_file, | |
11821 | delete_dwo_file, | |
11822 | &objfile->objfile_obstack, | |
11823 | hashtab_obstack_allocate, | |
11824 | dummy_obstack_deallocate)); | |
3019eac3 DE |
11825 | } |
11826 | ||
80626a55 DE |
11827 | /* Lookup DWO file DWO_NAME. */ |
11828 | ||
11829 | static void ** | |
ed2dc618 SM |
11830 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11831 | const char *dwo_name, | |
11832 | const char *comp_dir) | |
80626a55 DE |
11833 | { |
11834 | struct dwo_file find_entry; | |
11835 | void **slot; | |
11836 | ||
11837 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11838 | dwarf2_per_objfile->dwo_files |
11839 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 | 11840 | |
0ac5b59e DE |
11841 | find_entry.dwo_name = dwo_name; |
11842 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11843 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11844 | INSERT); | |
80626a55 DE |
11845 | |
11846 | return slot; | |
11847 | } | |
11848 | ||
3019eac3 DE |
11849 | static hashval_t |
11850 | hash_dwo_unit (const void *item) | |
11851 | { | |
9a3c8263 | 11852 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11853 | |
11854 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11855 | return dwo_unit->signature; | |
11856 | } | |
11857 | ||
11858 | static int | |
11859 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11860 | { | |
9a3c8263 SM |
11861 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11862 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11863 | |
11864 | /* The signature is assumed to be unique within the DWO file. | |
11865 | So while object file CU dwo_id's always have the value zero, | |
11866 | that's OK, assuming each object file DWO file has only one CU, | |
11867 | and that's the rule for now. */ | |
11868 | return lhs->signature == rhs->signature; | |
11869 | } | |
11870 | ||
11871 | /* Allocate a hash table for DWO CUs,TUs. | |
11872 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11873 | ||
11874 | static htab_t | |
11875 | allocate_dwo_unit_table (struct objfile *objfile) | |
11876 | { | |
11877 | /* Start out with a pretty small number. | |
11878 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11879 | return htab_create_alloc_ex (3, | |
11880 | hash_dwo_unit, | |
11881 | eq_dwo_unit, | |
11882 | NULL, | |
11883 | &objfile->objfile_obstack, | |
11884 | hashtab_obstack_allocate, | |
11885 | dummy_obstack_deallocate); | |
11886 | } | |
11887 | ||
80626a55 | 11888 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11889 | |
19c3d4c9 | 11890 | struct create_dwo_cu_data |
3019eac3 DE |
11891 | { |
11892 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11893 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11894 | }; |
11895 | ||
19c3d4c9 | 11896 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11897 | |
11898 | static void | |
19c3d4c9 DE |
11899 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11900 | const gdb_byte *info_ptr, | |
11901 | struct die_info *comp_unit_die, | |
11902 | int has_children, | |
11903 | void *datap) | |
3019eac3 DE |
11904 | { |
11905 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11906 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11907 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11908 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11909 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11910 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11911 | |
a084a2a6 AT |
11912 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11913 | if (!signature.has_value ()) | |
3019eac3 | 11914 | { |
b98664d3 | 11915 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11916 | " its dwo_id [in module %s]"), |
9d8780f0 | 11917 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11918 | return; |
11919 | } | |
11920 | ||
3019eac3 | 11921 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11922 | dwo_unit->signature = *signature; |
8a0459fd | 11923 | dwo_unit->section = section; |
9c541725 | 11924 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11925 | dwo_unit->length = cu->per_cu->length; |
11926 | ||
b4f54984 | 11927 | if (dwarf_read_debug) |
9d8780f0 SM |
11928 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11929 | sect_offset_str (sect_off), | |
9c541725 | 11930 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11931 | } |
11932 | ||
33c5cd75 | 11933 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11934 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11935 | |
33c5cd75 | 11936 | static void |
ed2dc618 SM |
11937 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11938 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11939 | htab_t &cus_htab) |
3019eac3 DE |
11940 | { |
11941 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11942 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11943 | |
33c5cd75 DB |
11944 | dwarf2_read_section (objfile, §ion); |
11945 | info_ptr = section.buffer; | |
3019eac3 DE |
11946 | |
11947 | if (info_ptr == NULL) | |
33c5cd75 | 11948 | return; |
3019eac3 | 11949 | |
b4f54984 | 11950 | if (dwarf_read_debug) |
19c3d4c9 DE |
11951 | { |
11952 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11953 | get_section_name (§ion), |
11954 | get_section_file_name (§ion)); | |
19c3d4c9 | 11955 | } |
3019eac3 | 11956 | |
33c5cd75 | 11957 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11958 | while (info_ptr < end_ptr) |
11959 | { | |
11960 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11961 | struct create_dwo_cu_data create_dwo_cu_data; |
11962 | struct dwo_unit *dwo_unit; | |
11963 | void **slot; | |
11964 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11965 | |
19c3d4c9 DE |
11966 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11967 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11968 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11969 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11970 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11971 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11972 | per_cu.section = §ion; | |
c5ed0576 | 11973 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11974 | |
11975 | init_cutu_and_read_dies_no_follow ( | |
11976 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11977 | info_ptr += per_cu.length; | |
11978 | ||
11979 | // If the unit could not be parsed, skip it. | |
11980 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11981 | continue; | |
3019eac3 | 11982 | |
33c5cd75 DB |
11983 | if (cus_htab == NULL) |
11984 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11985 | |
33c5cd75 DB |
11986 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11987 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11988 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11989 | gdb_assert (slot != NULL); | |
11990 | if (*slot != NULL) | |
19c3d4c9 | 11991 | { |
33c5cd75 DB |
11992 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11993 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11994 | |
b98664d3 | 11995 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11996 | " the entry at offset %s, signature %s"), |
11997 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11998 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11999 | } |
33c5cd75 | 12000 | *slot = (void *)dwo_unit; |
3019eac3 | 12001 | } |
3019eac3 DE |
12002 | } |
12003 | ||
80626a55 DE |
12004 | /* DWP file .debug_{cu,tu}_index section format: |
12005 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
12006 | ||
d2415c6c DE |
12007 | DWP Version 1: |
12008 | ||
80626a55 DE |
12009 | Both index sections have the same format, and serve to map a 64-bit |
12010 | signature to a set of section numbers. Each section begins with a header, | |
12011 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
12012 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
12013 | aligned at 8-byte boundaries in the file. | |
12014 | ||
d2415c6c DE |
12015 | The index section header consists of: |
12016 | ||
12017 | V, 32 bit version number | |
12018 | -, 32 bits unused | |
12019 | N, 32 bit number of compilation units or type units in the index | |
12020 | M, 32 bit number of slots in the hash table | |
80626a55 | 12021 | |
d2415c6c | 12022 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12023 | |
d2415c6c DE |
12024 | The hash table begins at offset 16 in the section, and consists of an array |
12025 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12026 | order of the application binary). Unused slots in the hash table are 0. | |
12027 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12028 | |
d2415c6c DE |
12029 | The parallel table begins immediately after the hash table |
12030 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12031 | array of 32-bit indexes (using the byte order of the application binary), | |
12032 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12033 | table contains a 32-bit index into the pool of section numbers. For unused | |
12034 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12035 | |
73869dc2 DE |
12036 | The pool of section numbers begins immediately following the hash table |
12037 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12038 | section numbers consists of an array of 32-bit words (using the byte order | |
12039 | of the application binary). Each item in the array is indexed starting | |
12040 | from 0. The hash table entry provides the index of the first section | |
12041 | number in the set. Additional section numbers in the set follow, and the | |
12042 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12043 | ||
12044 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12045 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12046 | be the second entry. Other members of the set may follow in any order. | |
12047 | ||
12048 | --- | |
12049 | ||
12050 | DWP Version 2: | |
12051 | ||
12052 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12053 | and the entries in the index tables are now offsets into these sections. | |
12054 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12055 | section. | |
12056 | ||
12057 | Index Section Contents: | |
12058 | Header | |
12059 | Hash Table of Signatures dwp_hash_table.hash_table | |
12060 | Parallel Table of Indices dwp_hash_table.unit_table | |
12061 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12062 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12063 | ||
12064 | The index section header consists of: | |
12065 | ||
12066 | V, 32 bit version number | |
12067 | L, 32 bit number of columns in the table of section offsets | |
12068 | N, 32 bit number of compilation units or type units in the index | |
12069 | M, 32 bit number of slots in the hash table | |
12070 | ||
12071 | Numbers are recorded using the byte order of the application binary. | |
12072 | ||
12073 | The hash table has the same format as version 1. | |
12074 | The parallel table of indices has the same format as version 1, | |
12075 | except that the entries are origin-1 indices into the table of sections | |
12076 | offsets and the table of section sizes. | |
12077 | ||
12078 | The table of offsets begins immediately following the parallel table | |
12079 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12080 | a two-dimensional array of 32-bit words (using the byte order of the | |
12081 | application binary), with L columns and N+1 rows, in row-major order. | |
12082 | Each row in the array is indexed starting from 0. The first row provides | |
12083 | a key to the remaining rows: each column in this row provides an identifier | |
12084 | for a debug section, and the offsets in the same column of subsequent rows | |
12085 | refer to that section. The section identifiers are: | |
12086 | ||
12087 | DW_SECT_INFO 1 .debug_info.dwo | |
12088 | DW_SECT_TYPES 2 .debug_types.dwo | |
12089 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12090 | DW_SECT_LINE 4 .debug_line.dwo | |
12091 | DW_SECT_LOC 5 .debug_loc.dwo | |
12092 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12093 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12094 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12095 | ||
12096 | The offsets provided by the CU and TU index sections are the base offsets | |
12097 | for the contributions made by each CU or TU to the corresponding section | |
12098 | in the package file. Each CU and TU header contains an abbrev_offset | |
12099 | field, used to find the abbreviations table for that CU or TU within the | |
12100 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12101 | be interpreted as relative to the base offset given in the index section. | |
12102 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12103 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12104 | and offsets into other debug sections obtained from DWARF attributes should | |
12105 | also be interpreted as relative to the corresponding base offset. | |
12106 | ||
12107 | The table of sizes begins immediately following the table of offsets. | |
12108 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12109 | with L columns and N rows, in row-major order. Each row in the array is | |
12110 | indexed starting from 1 (row 0 is shared by the two tables). | |
12111 | ||
12112 | --- | |
12113 | ||
12114 | Hash table lookup is handled the same in version 1 and 2: | |
12115 | ||
12116 | We assume that N and M will not exceed 2^32 - 1. | |
12117 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12118 | ||
d2415c6c DE |
12119 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12120 | in the hash table is located as follows: | |
80626a55 | 12121 | |
d2415c6c DE |
12122 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12123 | the low-order k bits all set to 1. | |
80626a55 | 12124 | |
d2415c6c | 12125 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12126 | |
d2415c6c DE |
12127 | 3) If the hash table entry at index H matches the signature, use that |
12128 | entry. If the hash table entry at index H is unused (all zeroes), | |
12129 | terminate the search: the signature is not present in the table. | |
80626a55 | 12130 | |
d2415c6c | 12131 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12132 | |
d2415c6c | 12133 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12134 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12135 | |
12136 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12137 | .debug_{info,types}.dwo in DWP_FILE. | |
12138 | Returns NULL if there isn't one. | |
12139 | Note: This function processes DWP files only, not DWO files. */ | |
12140 | ||
12141 | static struct dwp_hash_table * | |
ed2dc618 SM |
12142 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12143 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12144 | { |
12145 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12146 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12147 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12148 | struct dwarf2_section_info *index; |
73869dc2 | 12149 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12150 | struct dwp_hash_table *htab; |
12151 | ||
12152 | if (is_debug_types) | |
12153 | index = &dwp_file->sections.tu_index; | |
12154 | else | |
12155 | index = &dwp_file->sections.cu_index; | |
12156 | ||
12157 | if (dwarf2_section_empty_p (index)) | |
12158 | return NULL; | |
12159 | dwarf2_read_section (objfile, index); | |
12160 | ||
12161 | index_ptr = index->buffer; | |
12162 | index_end = index_ptr + index->size; | |
12163 | ||
12164 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12165 | index_ptr += 4; |
12166 | if (version == 2) | |
12167 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12168 | else | |
12169 | nr_columns = 0; | |
12170 | index_ptr += 4; | |
80626a55 DE |
12171 | nr_units = read_4_bytes (dbfd, index_ptr); |
12172 | index_ptr += 4; | |
12173 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12174 | index_ptr += 4; | |
12175 | ||
73869dc2 | 12176 | if (version != 1 && version != 2) |
80626a55 | 12177 | { |
21aa081e | 12178 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12179 | " [in module %s]"), |
21aa081e | 12180 | pulongest (version), dwp_file->name); |
80626a55 DE |
12181 | } |
12182 | if (nr_slots != (nr_slots & -nr_slots)) | |
12183 | { | |
21aa081e | 12184 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12185 | " is not power of 2 [in module %s]"), |
21aa081e | 12186 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12187 | } |
12188 | ||
12189 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12190 | htab->version = version; |
12191 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12192 | htab->nr_units = nr_units; |
12193 | htab->nr_slots = nr_slots; | |
12194 | htab->hash_table = index_ptr; | |
12195 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12196 | |
12197 | /* Exit early if the table is empty. */ | |
12198 | if (nr_slots == 0 || nr_units == 0 | |
12199 | || (version == 2 && nr_columns == 0)) | |
12200 | { | |
12201 | /* All must be zero. */ | |
12202 | if (nr_slots != 0 || nr_units != 0 | |
12203 | || (version == 2 && nr_columns != 0)) | |
12204 | { | |
b98664d3 | 12205 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12206 | " all zero [in modules %s]"), |
12207 | dwp_file->name); | |
12208 | } | |
12209 | return htab; | |
12210 | } | |
12211 | ||
12212 | if (version == 1) | |
12213 | { | |
12214 | htab->section_pool.v1.indices = | |
12215 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12216 | /* It's harder to decide whether the section is too small in v1. | |
12217 | V1 is deprecated anyway so we punt. */ | |
12218 | } | |
12219 | else | |
12220 | { | |
12221 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12222 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12223 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12224 | /* Reverse map for error checking. */ |
12225 | int ids_seen[DW_SECT_MAX + 1]; | |
12226 | int i; | |
12227 | ||
12228 | if (nr_columns < 2) | |
12229 | { | |
12230 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12231 | " in section table [in module %s]"), | |
12232 | dwp_file->name); | |
12233 | } | |
12234 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12235 | { | |
12236 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12237 | " in section table [in module %s]"), | |
12238 | dwp_file->name); | |
12239 | } | |
04fd5eed GB |
12240 | memset (ids, 255, sizeof_ids); |
12241 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12242 | for (i = 0; i < nr_columns; ++i) |
12243 | { | |
12244 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12245 | ||
12246 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12247 | { | |
12248 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12249 | " in section table [in module %s]"), | |
12250 | id, dwp_file->name); | |
12251 | } | |
12252 | if (ids_seen[id] != -1) | |
12253 | { | |
12254 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12255 | " id %d in section table [in module %s]"), | |
12256 | id, dwp_file->name); | |
12257 | } | |
12258 | ids_seen[id] = i; | |
12259 | ids[i] = id; | |
12260 | } | |
12261 | /* Must have exactly one info or types section. */ | |
12262 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12263 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12264 | != 1) | |
12265 | { | |
12266 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12267 | " DWO info/types section [in module %s]"), | |
12268 | dwp_file->name); | |
12269 | } | |
12270 | /* Must have an abbrev section. */ | |
12271 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12272 | { | |
12273 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12274 | " section [in module %s]"), | |
12275 | dwp_file->name); | |
12276 | } | |
12277 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12278 | htab->section_pool.v2.sizes = | |
12279 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12280 | * nr_units * nr_columns); | |
12281 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12282 | * nr_units * nr_columns)) | |
12283 | > index_end) | |
12284 | { | |
12285 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12286 | " [in module %s]"), | |
12287 | dwp_file->name); | |
12288 | } | |
12289 | } | |
80626a55 DE |
12290 | |
12291 | return htab; | |
12292 | } | |
12293 | ||
12294 | /* Update SECTIONS with the data from SECTP. | |
12295 | ||
12296 | This function is like the other "locate" section routines that are | |
12297 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12298 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12299 | |
12300 | The result is non-zero for success, or zero if an error was found. */ | |
12301 | ||
12302 | static int | |
73869dc2 DE |
12303 | locate_v1_virtual_dwo_sections (asection *sectp, |
12304 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12305 | { |
12306 | const struct dwop_section_names *names = &dwop_section_names; | |
12307 | ||
12308 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12309 | { | |
12310 | /* There can be only one. */ | |
049412e3 | 12311 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12312 | return 0; |
049412e3 | 12313 | sections->abbrev.s.section = sectp; |
fd361982 | 12314 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12315 | } |
12316 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12317 | || section_is_p (sectp->name, &names->types_dwo)) | |
12318 | { | |
12319 | /* There can be only one. */ | |
049412e3 | 12320 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12321 | return 0; |
049412e3 | 12322 | sections->info_or_types.s.section = sectp; |
fd361982 | 12323 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12324 | } |
12325 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12326 | { | |
12327 | /* There can be only one. */ | |
049412e3 | 12328 | if (sections->line.s.section != NULL) |
80626a55 | 12329 | return 0; |
049412e3 | 12330 | sections->line.s.section = sectp; |
fd361982 | 12331 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12332 | } |
12333 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12334 | { | |
12335 | /* There can be only one. */ | |
049412e3 | 12336 | if (sections->loc.s.section != NULL) |
80626a55 | 12337 | return 0; |
049412e3 | 12338 | sections->loc.s.section = sectp; |
fd361982 | 12339 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12340 | } |
12341 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12342 | { | |
12343 | /* There can be only one. */ | |
049412e3 | 12344 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12345 | return 0; |
049412e3 | 12346 | sections->macinfo.s.section = sectp; |
fd361982 | 12347 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12348 | } |
12349 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12350 | { | |
12351 | /* There can be only one. */ | |
049412e3 | 12352 | if (sections->macro.s.section != NULL) |
80626a55 | 12353 | return 0; |
049412e3 | 12354 | sections->macro.s.section = sectp; |
fd361982 | 12355 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12356 | } |
12357 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12358 | { | |
12359 | /* There can be only one. */ | |
049412e3 | 12360 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12361 | return 0; |
049412e3 | 12362 | sections->str_offsets.s.section = sectp; |
fd361982 | 12363 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12364 | } |
12365 | else | |
12366 | { | |
12367 | /* No other kind of section is valid. */ | |
12368 | return 0; | |
12369 | } | |
12370 | ||
12371 | return 1; | |
12372 | } | |
12373 | ||
73869dc2 DE |
12374 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12375 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12376 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12377 | This is for DWP version 1 files. */ | |
80626a55 DE |
12378 | |
12379 | static struct dwo_unit * | |
ed2dc618 SM |
12380 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12381 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12382 | uint32_t unit_index, |
12383 | const char *comp_dir, | |
12384 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12385 | { |
12386 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12387 | const struct dwp_hash_table *dwp_htab = |
12388 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12389 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12390 | const char *kind = is_debug_types ? "TU" : "CU"; |
12391 | struct dwo_file *dwo_file; | |
12392 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12393 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12394 | void **dwo_file_slot; |
80626a55 DE |
12395 | int i; |
12396 | ||
73869dc2 DE |
12397 | gdb_assert (dwp_file->version == 1); |
12398 | ||
b4f54984 | 12399 | if (dwarf_read_debug) |
80626a55 | 12400 | { |
73869dc2 | 12401 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12402 | kind, |
73869dc2 | 12403 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12404 | dwp_file->name); |
12405 | } | |
12406 | ||
19ac8c2e | 12407 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12408 | Put a limit on the number of sections we look for so that bad data |
12409 | doesn't cause us to loop forever. */ | |
12410 | ||
73869dc2 | 12411 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12412 | (1 /* .debug_info or .debug_types */ \ |
12413 | + 1 /* .debug_abbrev */ \ | |
12414 | + 1 /* .debug_line */ \ | |
12415 | + 1 /* .debug_loc */ \ | |
12416 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12417 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12418 | + 1 /* trailing zero */) |
12419 | ||
12420 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12421 | |
73869dc2 | 12422 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12423 | { |
12424 | asection *sectp; | |
12425 | uint32_t section_nr = | |
12426 | read_4_bytes (dbfd, | |
73869dc2 DE |
12427 | dwp_htab->section_pool.v1.indices |
12428 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12429 | |
12430 | if (section_nr == 0) | |
12431 | break; | |
12432 | if (section_nr >= dwp_file->num_sections) | |
12433 | { | |
12434 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12435 | " [in module %s]"), | |
12436 | dwp_file->name); | |
12437 | } | |
12438 | ||
12439 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12440 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12441 | { |
12442 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12443 | " [in module %s]"), | |
12444 | dwp_file->name); | |
12445 | } | |
12446 | } | |
12447 | ||
12448 | if (i < 2 | |
a32a8923 DE |
12449 | || dwarf2_section_empty_p (§ions.info_or_types) |
12450 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12451 | { |
12452 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12453 | " [in module %s]"), | |
12454 | dwp_file->name); | |
12455 | } | |
73869dc2 | 12456 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12457 | { |
12458 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12459 | " [in module %s]"), | |
12460 | dwp_file->name); | |
12461 | } | |
12462 | ||
12463 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12464 | have dwo_unit "live" in that. At least for now. | |
12465 | ||
12466 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12467 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12468 | file, we can combine them back into a virtual DWO file to save space |
12469 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12470 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12471 | ||
791afaa2 TT |
12472 | std::string virtual_dwo_name = |
12473 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12474 | get_section_id (§ions.abbrev), | |
12475 | get_section_id (§ions.line), | |
12476 | get_section_id (§ions.loc), | |
12477 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12478 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12479 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12480 | virtual_dwo_name.c_str (), | |
12481 | comp_dir); | |
80626a55 DE |
12482 | /* Create one if necessary. */ |
12483 | if (*dwo_file_slot == NULL) | |
12484 | { | |
b4f54984 | 12485 | if (dwarf_read_debug) |
80626a55 DE |
12486 | { |
12487 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12488 | virtual_dwo_name.c_str ()); |
80626a55 | 12489 | } |
51ac9db5 | 12490 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12491 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12492 | virtual_dwo_name); | |
0ac5b59e | 12493 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12494 | dwo_file->sections.abbrev = sections.abbrev; |
12495 | dwo_file->sections.line = sections.line; | |
12496 | dwo_file->sections.loc = sections.loc; | |
12497 | dwo_file->sections.macinfo = sections.macinfo; | |
12498 | dwo_file->sections.macro = sections.macro; | |
12499 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12500 | /* The "str" section is global to the entire DWP file. */ | |
12501 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12502 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12503 | there's no need to record it in dwo_file. |
12504 | Also, we can't simply record type sections in dwo_file because | |
12505 | we record a pointer into the vector in dwo_unit. As we collect more | |
12506 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12507 | for it, invalidating all copies of pointers into the previous |
12508 | contents. */ | |
80626a55 DE |
12509 | *dwo_file_slot = dwo_file; |
12510 | } | |
12511 | else | |
12512 | { | |
b4f54984 | 12513 | if (dwarf_read_debug) |
80626a55 DE |
12514 | { |
12515 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12516 | virtual_dwo_name.c_str ()); |
80626a55 | 12517 | } |
9a3c8263 | 12518 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12519 | } |
80626a55 DE |
12520 | |
12521 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12522 | dwo_unit->dwo_file = dwo_file; | |
12523 | dwo_unit->signature = signature; | |
8d749320 SM |
12524 | dwo_unit->section = |
12525 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12526 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12527 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12528 | |
12529 | return dwo_unit; | |
12530 | } | |
12531 | ||
73869dc2 DE |
12532 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12533 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12534 | piece within that section used by a TU/CU, return a virtual section | |
12535 | of just that piece. */ | |
12536 | ||
12537 | static struct dwarf2_section_info | |
ed2dc618 SM |
12538 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12539 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12540 | bfd_size_type offset, bfd_size_type size) |
12541 | { | |
12542 | struct dwarf2_section_info result; | |
12543 | asection *sectp; | |
12544 | ||
12545 | gdb_assert (section != NULL); | |
12546 | gdb_assert (!section->is_virtual); | |
12547 | ||
12548 | memset (&result, 0, sizeof (result)); | |
12549 | result.s.containing_section = section; | |
dc4ccb6f | 12550 | result.is_virtual = true; |
73869dc2 DE |
12551 | |
12552 | if (size == 0) | |
12553 | return result; | |
12554 | ||
12555 | sectp = get_section_bfd_section (section); | |
12556 | ||
12557 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12558 | bounds of the real section. This is a pretty-rare event, so just | |
12559 | flag an error (easier) instead of a warning and trying to cope. */ | |
12560 | if (sectp == NULL | |
fd361982 | 12561 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12562 | { |
73869dc2 DE |
12563 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12564 | " in section %s [in module %s]"), | |
fd361982 | 12565 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12566 | objfile_name (dwarf2_per_objfile->objfile)); |
12567 | } | |
12568 | ||
12569 | result.virtual_offset = offset; | |
12570 | result.size = size; | |
12571 | return result; | |
12572 | } | |
12573 | ||
12574 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12575 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12576 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12577 | This is for DWP version 2 files. */ | |
12578 | ||
12579 | static struct dwo_unit * | |
ed2dc618 SM |
12580 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12581 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12582 | uint32_t unit_index, |
12583 | const char *comp_dir, | |
12584 | ULONGEST signature, int is_debug_types) | |
12585 | { | |
12586 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12587 | const struct dwp_hash_table *dwp_htab = | |
12588 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12589 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12590 | const char *kind = is_debug_types ? "TU" : "CU"; |
12591 | struct dwo_file *dwo_file; | |
12592 | struct dwo_unit *dwo_unit; | |
12593 | struct virtual_v2_dwo_sections sections; | |
12594 | void **dwo_file_slot; | |
73869dc2 DE |
12595 | int i; |
12596 | ||
12597 | gdb_assert (dwp_file->version == 2); | |
12598 | ||
b4f54984 | 12599 | if (dwarf_read_debug) |
73869dc2 DE |
12600 | { |
12601 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12602 | kind, | |
12603 | pulongest (unit_index), hex_string (signature), | |
12604 | dwp_file->name); | |
12605 | } | |
12606 | ||
12607 | /* Fetch the section offsets of this DWO unit. */ | |
12608 | ||
12609 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12610 | |
12611 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12612 | { | |
12613 | uint32_t offset = read_4_bytes (dbfd, | |
12614 | dwp_htab->section_pool.v2.offsets | |
12615 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12616 | + i) | |
12617 | * sizeof (uint32_t))); | |
12618 | uint32_t size = read_4_bytes (dbfd, | |
12619 | dwp_htab->section_pool.v2.sizes | |
12620 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12621 | + i) | |
12622 | * sizeof (uint32_t))); | |
12623 | ||
12624 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12625 | { | |
12626 | case DW_SECT_INFO: | |
12627 | case DW_SECT_TYPES: | |
12628 | sections.info_or_types_offset = offset; | |
12629 | sections.info_or_types_size = size; | |
12630 | break; | |
12631 | case DW_SECT_ABBREV: | |
12632 | sections.abbrev_offset = offset; | |
12633 | sections.abbrev_size = size; | |
12634 | break; | |
12635 | case DW_SECT_LINE: | |
12636 | sections.line_offset = offset; | |
12637 | sections.line_size = size; | |
12638 | break; | |
12639 | case DW_SECT_LOC: | |
12640 | sections.loc_offset = offset; | |
12641 | sections.loc_size = size; | |
12642 | break; | |
12643 | case DW_SECT_STR_OFFSETS: | |
12644 | sections.str_offsets_offset = offset; | |
12645 | sections.str_offsets_size = size; | |
12646 | break; | |
12647 | case DW_SECT_MACINFO: | |
12648 | sections.macinfo_offset = offset; | |
12649 | sections.macinfo_size = size; | |
12650 | break; | |
12651 | case DW_SECT_MACRO: | |
12652 | sections.macro_offset = offset; | |
12653 | sections.macro_size = size; | |
12654 | break; | |
12655 | } | |
12656 | } | |
12657 | ||
12658 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12659 | have dwo_unit "live" in that. At least for now. | |
12660 | ||
12661 | The DWP file can be made up of a random collection of CUs and TUs. | |
12662 | However, for each CU + set of TUs that came from the same original DWO | |
12663 | file, we can combine them back into a virtual DWO file to save space | |
12664 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12665 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12666 | ||
791afaa2 TT |
12667 | std::string virtual_dwo_name = |
12668 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12669 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12670 | (long) (sections.line_size ? sections.line_offset : 0), | |
12671 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12672 | (long) (sections.str_offsets_size | |
12673 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12674 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12675 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12676 | virtual_dwo_name.c_str (), | |
12677 | comp_dir); | |
73869dc2 DE |
12678 | /* Create one if necessary. */ |
12679 | if (*dwo_file_slot == NULL) | |
12680 | { | |
b4f54984 | 12681 | if (dwarf_read_debug) |
73869dc2 DE |
12682 | { |
12683 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12684 | virtual_dwo_name.c_str ()); |
73869dc2 | 12685 | } |
51ac9db5 | 12686 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12687 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12688 | virtual_dwo_name); | |
73869dc2 DE |
12689 | dwo_file->comp_dir = comp_dir; |
12690 | dwo_file->sections.abbrev = | |
ed2dc618 | 12691 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12692 | sections.abbrev_offset, sections.abbrev_size); |
12693 | dwo_file->sections.line = | |
ed2dc618 | 12694 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12695 | sections.line_offset, sections.line_size); |
12696 | dwo_file->sections.loc = | |
ed2dc618 | 12697 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12698 | sections.loc_offset, sections.loc_size); |
12699 | dwo_file->sections.macinfo = | |
ed2dc618 | 12700 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12701 | sections.macinfo_offset, sections.macinfo_size); |
12702 | dwo_file->sections.macro = | |
ed2dc618 | 12703 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12704 | sections.macro_offset, sections.macro_size); |
12705 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12706 | create_dwp_v2_section (dwarf2_per_objfile, |
12707 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12708 | sections.str_offsets_offset, |
12709 | sections.str_offsets_size); | |
12710 | /* The "str" section is global to the entire DWP file. */ | |
12711 | dwo_file->sections.str = dwp_file->sections.str; | |
12712 | /* The info or types section is assigned below to dwo_unit, | |
12713 | there's no need to record it in dwo_file. | |
12714 | Also, we can't simply record type sections in dwo_file because | |
12715 | we record a pointer into the vector in dwo_unit. As we collect more | |
12716 | types we'll grow the vector and eventually have to reallocate space | |
12717 | for it, invalidating all copies of pointers into the previous | |
12718 | contents. */ | |
12719 | *dwo_file_slot = dwo_file; | |
12720 | } | |
12721 | else | |
12722 | { | |
b4f54984 | 12723 | if (dwarf_read_debug) |
73869dc2 DE |
12724 | { |
12725 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12726 | virtual_dwo_name.c_str ()); |
73869dc2 | 12727 | } |
9a3c8263 | 12728 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12729 | } |
73869dc2 DE |
12730 | |
12731 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12732 | dwo_unit->dwo_file = dwo_file; | |
12733 | dwo_unit->signature = signature; | |
8d749320 SM |
12734 | dwo_unit->section = |
12735 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12736 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12737 | is_debug_types | |
73869dc2 DE |
12738 | ? &dwp_file->sections.types |
12739 | : &dwp_file->sections.info, | |
12740 | sections.info_or_types_offset, | |
12741 | sections.info_or_types_size); | |
12742 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12743 | ||
12744 | return dwo_unit; | |
12745 | } | |
12746 | ||
57d63ce2 DE |
12747 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12748 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12749 | |
12750 | static struct dwo_unit * | |
ed2dc618 SM |
12751 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12752 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12753 | ULONGEST signature, int is_debug_types) |
80626a55 | 12754 | { |
57d63ce2 DE |
12755 | const struct dwp_hash_table *dwp_htab = |
12756 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12757 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12758 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12759 | uint32_t hash = signature & mask; |
12760 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12761 | unsigned int i; | |
12762 | void **slot; | |
870f88f7 | 12763 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12764 | |
12765 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12766 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12767 | slot = htab_find_slot (is_debug_types |
12768 | ? dwp_file->loaded_tus | |
12769 | : dwp_file->loaded_cus, | |
12770 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12771 | |
12772 | if (*slot != NULL) | |
9a3c8263 | 12773 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12774 | |
12775 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12776 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12777 | { |
12778 | ULONGEST signature_in_table; | |
12779 | ||
12780 | signature_in_table = | |
57d63ce2 | 12781 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12782 | if (signature_in_table == signature) |
12783 | { | |
57d63ce2 DE |
12784 | uint32_t unit_index = |
12785 | read_4_bytes (dbfd, | |
12786 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12787 | |
73869dc2 DE |
12788 | if (dwp_file->version == 1) |
12789 | { | |
ed2dc618 SM |
12790 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12791 | dwp_file, unit_index, | |
73869dc2 DE |
12792 | comp_dir, signature, |
12793 | is_debug_types); | |
12794 | } | |
12795 | else | |
12796 | { | |
ed2dc618 SM |
12797 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12798 | dwp_file, unit_index, | |
73869dc2 DE |
12799 | comp_dir, signature, |
12800 | is_debug_types); | |
12801 | } | |
9a3c8263 | 12802 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12803 | } |
12804 | if (signature_in_table == 0) | |
12805 | return NULL; | |
12806 | hash = (hash + hash2) & mask; | |
12807 | } | |
12808 | ||
12809 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12810 | " [in module %s]"), | |
12811 | dwp_file->name); | |
12812 | } | |
12813 | ||
ab5088bf | 12814 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12815 | Open the file specified by FILE_NAME and hand it off to BFD for |
12816 | preliminary analysis. Return a newly initialized bfd *, which | |
12817 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12818 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12819 | SEARCH_CWD is true if the current directory is to be searched. |
12820 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12821 | If successful, the file is added to the bfd include table of the |
12822 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12823 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12824 | NOTE: This function is derived from symfile_bfd_open. */ |
12825 | ||
192b62ce | 12826 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12827 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12828 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12829 | { |
24b9144d | 12830 | int desc; |
9c02c129 DE |
12831 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12832 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12833 | to debug_file_directory. */ | |
e0cc99a6 | 12834 | const char *search_path; |
9c02c129 DE |
12835 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12836 | ||
e0cc99a6 | 12837 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12838 | if (search_cwd) |
12839 | { | |
12840 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12841 | { |
12842 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12843 | debug_file_directory, | |
12844 | (char *) NULL)); | |
12845 | search_path = search_path_holder.get (); | |
12846 | } | |
6ac97d4c | 12847 | else |
e0cc99a6 | 12848 | search_path = "."; |
6ac97d4c | 12849 | } |
9c02c129 | 12850 | else |
e0cc99a6 | 12851 | search_path = debug_file_directory; |
3019eac3 | 12852 | |
24b9144d | 12853 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12854 | if (is_dwp) |
12855 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12856 | |
12857 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12858 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12859 | O_RDONLY | O_BINARY, &absolute_name); |
12860 | if (desc < 0) | |
12861 | return NULL; | |
12862 | ||
e0cc99a6 TT |
12863 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12864 | gnutarget, desc)); | |
9c02c129 DE |
12865 | if (sym_bfd == NULL) |
12866 | return NULL; | |
192b62ce | 12867 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12868 | |
192b62ce TT |
12869 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12870 | return NULL; | |
3019eac3 | 12871 | |
13aaf454 DE |
12872 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12873 | This is important because things like demangled_names_hash lives in the | |
12874 | objfile's per_bfd space and may have references to things like symbol | |
12875 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12876 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12877 | |
3019eac3 DE |
12878 | return sym_bfd; |
12879 | } | |
12880 | ||
ab5088bf | 12881 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12882 | COMP_DIR is the DW_AT_comp_dir attribute. |
12883 | The result is the bfd handle of the file. | |
12884 | If there is a problem finding or opening the file, return NULL. | |
12885 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12886 | same as symfile_bfd_open. */ | |
12887 | ||
192b62ce | 12888 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12889 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12890 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12891 | { |
80626a55 | 12892 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12893 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12894 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12895 | |
12896 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12897 | ||
12898 | if (comp_dir != NULL) | |
12899 | { | |
b36cec19 PA |
12900 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12901 | file_name, (char *) NULL); | |
3019eac3 DE |
12902 | |
12903 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12904 | search path, which seems useful. */ | |
ed2dc618 SM |
12905 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12906 | path_to_try, | |
12907 | 0 /*is_dwp*/, | |
192b62ce | 12908 | 1 /*search_cwd*/)); |
3019eac3 DE |
12909 | xfree (path_to_try); |
12910 | if (abfd != NULL) | |
12911 | return abfd; | |
12912 | } | |
12913 | ||
12914 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12915 | is a list of paths. */ | |
12916 | ||
12917 | if (*debug_file_directory == '\0') | |
12918 | return NULL; | |
12919 | ||
ed2dc618 SM |
12920 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12921 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12922 | } |
12923 | ||
80626a55 DE |
12924 | /* This function is mapped across the sections and remembers the offset and |
12925 | size of each of the DWO debugging sections we are interested in. */ | |
12926 | ||
12927 | static void | |
12928 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12929 | { | |
9a3c8263 | 12930 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12931 | const struct dwop_section_names *names = &dwop_section_names; |
12932 | ||
12933 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12934 | { | |
049412e3 | 12935 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12936 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12937 | } |
12938 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12939 | { | |
049412e3 | 12940 | dwo_sections->info.s.section = sectp; |
fd361982 | 12941 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12942 | } |
12943 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12944 | { | |
049412e3 | 12945 | dwo_sections->line.s.section = sectp; |
fd361982 | 12946 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12947 | } |
12948 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12949 | { | |
049412e3 | 12950 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12951 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12952 | } |
12953 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12954 | { | |
049412e3 | 12955 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12956 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12957 | } |
12958 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12959 | { | |
049412e3 | 12960 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12961 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12962 | } |
12963 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12964 | { | |
049412e3 | 12965 | dwo_sections->str.s.section = sectp; |
fd361982 | 12966 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12967 | } |
12968 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12969 | { | |
049412e3 | 12970 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12971 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12972 | } |
12973 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12974 | { | |
12975 | struct dwarf2_section_info type_section; | |
12976 | ||
12977 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12978 | type_section.s.section = sectp; |
fd361982 | 12979 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12980 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12981 | } |
12982 | } | |
12983 | ||
ab5088bf | 12984 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12985 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12986 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12987 | |
12988 | static struct dwo_file * | |
0ac5b59e DE |
12989 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12990 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12991 | { |
ed2dc618 | 12992 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12993 | |
fb1eb2f9 | 12994 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12995 | if (dbfd == NULL) |
12996 | { | |
b4f54984 | 12997 | if (dwarf_read_debug) |
80626a55 DE |
12998 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12999 | return NULL; | |
13000 | } | |
263db9a1 | 13001 | |
51ac9db5 | 13002 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
13003 | dwo_file->dwo_name = dwo_name; |
13004 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 13005 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 13006 | |
fb1eb2f9 | 13007 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 13008 | &dwo_file->sections); |
3019eac3 | 13009 | |
ed2dc618 SM |
13010 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
13011 | dwo_file->cus); | |
3019eac3 | 13012 | |
263db9a1 | 13013 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 13014 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 13015 | |
b4f54984 | 13016 | if (dwarf_read_debug) |
80626a55 DE |
13017 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13018 | ||
263db9a1 | 13019 | return dwo_file.release (); |
3019eac3 DE |
13020 | } |
13021 | ||
80626a55 | 13022 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13023 | size of each of the DWP debugging sections common to version 1 and 2 that |
13024 | we are interested in. */ | |
3019eac3 | 13025 | |
80626a55 | 13026 | static void |
73869dc2 DE |
13027 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13028 | void *dwp_file_ptr) | |
3019eac3 | 13029 | { |
9a3c8263 | 13030 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13031 | const struct dwop_section_names *names = &dwop_section_names; |
13032 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13033 | |
80626a55 | 13034 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13035 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13036 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13037 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13038 | |
80626a55 DE |
13039 | /* Look for specific sections that we need. */ |
13040 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13041 | { | |
049412e3 | 13042 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 13043 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
13044 | } |
13045 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13046 | { | |
049412e3 | 13047 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 13048 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13049 | } |
13050 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13051 | { | |
049412e3 | 13052 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 13053 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13054 | } |
13055 | } | |
3019eac3 | 13056 | |
73869dc2 DE |
13057 | /* This function is mapped across the sections and remembers the offset and |
13058 | size of each of the DWP version 2 debugging sections that we are interested | |
13059 | in. This is split into a separate function because we don't know if we | |
13060 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13061 | ||
13062 | static void | |
13063 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13064 | { | |
9a3c8263 | 13065 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13066 | const struct dwop_section_names *names = &dwop_section_names; |
13067 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13068 | ||
13069 | /* Record the ELF section number for later lookup: this is what the | |
13070 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13071 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13072 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13073 | ||
13074 | /* Look for specific sections that we need. */ | |
13075 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13076 | { | |
049412e3 | 13077 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 13078 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
13079 | } |
13080 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13081 | { | |
049412e3 | 13082 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 13083 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
13084 | } |
13085 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13086 | { | |
049412e3 | 13087 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 13088 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
13089 | } |
13090 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13091 | { | |
049412e3 | 13092 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 13093 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
13094 | } |
13095 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13096 | { | |
049412e3 | 13097 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13098 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13099 | } |
13100 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13101 | { | |
049412e3 | 13102 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13103 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13104 | } |
13105 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13106 | { | |
049412e3 | 13107 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13108 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13109 | } |
13110 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13111 | { | |
049412e3 | 13112 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13113 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13114 | } |
13115 | } | |
13116 | ||
80626a55 | 13117 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13118 | |
80626a55 DE |
13119 | static hashval_t |
13120 | hash_dwp_loaded_cutus (const void *item) | |
13121 | { | |
9a3c8263 | 13122 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13123 | |
80626a55 DE |
13124 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13125 | return dwo_unit->signature; | |
3019eac3 DE |
13126 | } |
13127 | ||
80626a55 | 13128 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13129 | |
80626a55 DE |
13130 | static int |
13131 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13132 | { |
9a3c8263 SM |
13133 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13134 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13135 | |
80626a55 DE |
13136 | return dua->signature == dub->signature; |
13137 | } | |
3019eac3 | 13138 | |
80626a55 | 13139 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13140 | |
80626a55 DE |
13141 | static htab_t |
13142 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13143 | { | |
13144 | return htab_create_alloc_ex (3, | |
13145 | hash_dwp_loaded_cutus, | |
13146 | eq_dwp_loaded_cutus, | |
13147 | NULL, | |
13148 | &objfile->objfile_obstack, | |
13149 | hashtab_obstack_allocate, | |
13150 | dummy_obstack_deallocate); | |
13151 | } | |
3019eac3 | 13152 | |
ab5088bf DE |
13153 | /* Try to open DWP file FILE_NAME. |
13154 | The result is the bfd handle of the file. | |
13155 | If there is a problem finding or opening the file, return NULL. | |
13156 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13157 | same as symfile_bfd_open. */ | |
13158 | ||
192b62ce | 13159 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13160 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13161 | const char *file_name) | |
ab5088bf | 13162 | { |
ed2dc618 SM |
13163 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13164 | 1 /*is_dwp*/, | |
192b62ce | 13165 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13166 | if (abfd != NULL) |
13167 | return abfd; | |
13168 | ||
13169 | /* Work around upstream bug 15652. | |
13170 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13171 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13172 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13173 | of the executable's path may have discarded the needed info. | |
13174 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13175 | .gnu_debuglink, but that doesn't exist yet.] | |
13176 | Strip the directory from FILE_NAME and search again. */ | |
13177 | if (*debug_file_directory != '\0') | |
13178 | { | |
13179 | /* Don't implicitly search the current directory here. | |
13180 | If the user wants to search "." to handle this case, | |
13181 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13182 | return try_open_dwop_file (dwarf2_per_objfile, |
13183 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13184 | 0 /*search_cwd*/); |
13185 | } | |
13186 | ||
13187 | return NULL; | |
ab5088bf DE |
13188 | } |
13189 | ||
80626a55 DE |
13190 | /* Initialize the use of the DWP file for the current objfile. |
13191 | By convention the name of the DWP file is ${objfile}.dwp. | |
13192 | The result is NULL if it can't be found. */ | |
a766d390 | 13193 | |
400174b1 | 13194 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13195 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13196 | { |
13197 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13198 | |
82bf32bc JK |
13199 | /* Try to find first .dwp for the binary file before any symbolic links |
13200 | resolving. */ | |
6c447423 DE |
13201 | |
13202 | /* If the objfile is a debug file, find the name of the real binary | |
13203 | file and get the name of dwp file from there. */ | |
d721ba37 | 13204 | std::string dwp_name; |
6c447423 DE |
13205 | if (objfile->separate_debug_objfile_backlink != NULL) |
13206 | { | |
13207 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13208 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13209 | |
d721ba37 | 13210 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13211 | } |
13212 | else | |
d721ba37 PA |
13213 | dwp_name = objfile->original_name; |
13214 | ||
13215 | dwp_name += ".dwp"; | |
80626a55 | 13216 | |
ed2dc618 | 13217 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13218 | if (dbfd == NULL |
13219 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13220 | { | |
13221 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13222 | dwp_name = objfile_name (objfile); |
13223 | dwp_name += ".dwp"; | |
ed2dc618 | 13224 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13225 | } |
13226 | ||
80626a55 DE |
13227 | if (dbfd == NULL) |
13228 | { | |
b4f54984 | 13229 | if (dwarf_read_debug) |
d721ba37 | 13230 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13231 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13232 | } |
400174b1 TT |
13233 | |
13234 | const char *name = bfd_get_filename (dbfd.get ()); | |
13235 | std::unique_ptr<struct dwp_file> dwp_file | |
13236 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13237 | |
0a0f4c01 | 13238 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
13239 | dwp_file->elf_sections = |
13240 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13241 | dwp_file->num_sections, asection *); | |
13242 | ||
400174b1 TT |
13243 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13244 | dwarf2_locate_common_dwp_sections, | |
13245 | dwp_file.get ()); | |
80626a55 | 13246 | |
400174b1 TT |
13247 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13248 | 0); | |
80626a55 | 13249 | |
400174b1 TT |
13250 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13251 | 1); | |
80626a55 | 13252 | |
73869dc2 | 13253 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13254 | if (dwp_file->cus && dwp_file->tus |
13255 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13256 | { |
13257 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13258 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13259 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13260 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13261 | " TU version %s [in DWP file %s]"), | |
13262 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13263 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13264 | } |
08302ed2 DE |
13265 | |
13266 | if (dwp_file->cus) | |
13267 | dwp_file->version = dwp_file->cus->version; | |
13268 | else if (dwp_file->tus) | |
13269 | dwp_file->version = dwp_file->tus->version; | |
13270 | else | |
13271 | dwp_file->version = 2; | |
73869dc2 DE |
13272 | |
13273 | if (dwp_file->version == 2) | |
400174b1 TT |
13274 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13275 | dwarf2_locate_v2_dwp_sections, | |
13276 | dwp_file.get ()); | |
73869dc2 | 13277 | |
19ac8c2e DE |
13278 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13279 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13280 | |
b4f54984 | 13281 | if (dwarf_read_debug) |
80626a55 DE |
13282 | { |
13283 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13284 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13285 | " %s CUs, %s TUs\n", |
13286 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13287 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13288 | } |
13289 | ||
13290 | return dwp_file; | |
3019eac3 | 13291 | } |
c906108c | 13292 | |
ab5088bf DE |
13293 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13294 | ||
13295 | static struct dwp_file * | |
ed2dc618 | 13296 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13297 | { |
13298 | if (! dwarf2_per_objfile->dwp_checked) | |
13299 | { | |
ed2dc618 SM |
13300 | dwarf2_per_objfile->dwp_file |
13301 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13302 | dwarf2_per_objfile->dwp_checked = 1; |
13303 | } | |
400174b1 | 13304 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13305 | } |
13306 | ||
80626a55 DE |
13307 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13308 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13309 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13310 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13311 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13312 | ||
13313 | This is called, for example, when wanting to read a variable with a | |
13314 | complex location. Therefore we don't want to do file i/o for every call. | |
13315 | Therefore we don't want to look for a DWO file on every call. | |
13316 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13317 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13318 | for a DWO file. | |
13319 | ||
1c658ad5 | 13320 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13321 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13322 | |
3019eac3 | 13323 | static struct dwo_unit * |
80626a55 DE |
13324 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13325 | const char *dwo_name, const char *comp_dir, | |
13326 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13327 | { |
ed2dc618 | 13328 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13329 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13330 | const char *kind = is_debug_types ? "TU" : "CU"; |
13331 | void **dwo_file_slot; | |
3019eac3 | 13332 | struct dwo_file *dwo_file; |
80626a55 | 13333 | struct dwp_file *dwp_file; |
cb1df416 | 13334 | |
6a506a2d DE |
13335 | /* First see if there's a DWP file. |
13336 | If we have a DWP file but didn't find the DWO inside it, don't | |
13337 | look for the original DWO file. It makes gdb behave differently | |
13338 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13339 | |
ed2dc618 | 13340 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13341 | if (dwp_file != NULL) |
cf2c3c16 | 13342 | { |
80626a55 DE |
13343 | const struct dwp_hash_table *dwp_htab = |
13344 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13345 | ||
13346 | if (dwp_htab != NULL) | |
13347 | { | |
13348 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13349 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13350 | signature, is_debug_types); |
80626a55 DE |
13351 | |
13352 | if (dwo_cutu != NULL) | |
13353 | { | |
b4f54984 | 13354 | if (dwarf_read_debug) |
80626a55 DE |
13355 | { |
13356 | fprintf_unfiltered (gdb_stdlog, | |
13357 | "Virtual DWO %s %s found: @%s\n", | |
13358 | kind, hex_string (signature), | |
13359 | host_address_to_string (dwo_cutu)); | |
13360 | } | |
13361 | return dwo_cutu; | |
13362 | } | |
13363 | } | |
13364 | } | |
6a506a2d | 13365 | else |
80626a55 | 13366 | { |
6a506a2d | 13367 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13368 | |
ed2dc618 SM |
13369 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13370 | dwo_name, comp_dir); | |
6a506a2d | 13371 | if (*dwo_file_slot == NULL) |
80626a55 | 13372 | { |
6a506a2d DE |
13373 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13374 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13375 | } |
6a506a2d | 13376 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13377 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13378 | |
6a506a2d | 13379 | if (dwo_file != NULL) |
19c3d4c9 | 13380 | { |
6a506a2d DE |
13381 | struct dwo_unit *dwo_cutu = NULL; |
13382 | ||
13383 | if (is_debug_types && dwo_file->tus) | |
13384 | { | |
13385 | struct dwo_unit find_dwo_cutu; | |
13386 | ||
13387 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13388 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13389 | dwo_cutu |
13390 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13391 | } |
33c5cd75 | 13392 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13393 | { |
33c5cd75 DB |
13394 | struct dwo_unit find_dwo_cutu; |
13395 | ||
13396 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13397 | find_dwo_cutu.signature = signature; | |
13398 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13399 | &find_dwo_cutu); | |
6a506a2d DE |
13400 | } |
13401 | ||
13402 | if (dwo_cutu != NULL) | |
13403 | { | |
b4f54984 | 13404 | if (dwarf_read_debug) |
6a506a2d DE |
13405 | { |
13406 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13407 | kind, dwo_name, hex_string (signature), | |
13408 | host_address_to_string (dwo_cutu)); | |
13409 | } | |
13410 | return dwo_cutu; | |
80626a55 DE |
13411 | } |
13412 | } | |
2e276125 | 13413 | } |
9cdd5dbd | 13414 | |
80626a55 DE |
13415 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13416 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13417 | correctly to find the file. */ | |
13418 | ||
b4f54984 | 13419 | if (dwarf_read_debug) |
80626a55 DE |
13420 | { |
13421 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13422 | kind, dwo_name, hex_string (signature)); | |
13423 | } | |
3019eac3 | 13424 | |
6656a72d DE |
13425 | /* This is a warning and not a complaint because it can be caused by |
13426 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13427 | { |
13428 | /* Print the name of the DWP file if we looked there, helps the user | |
13429 | better diagnose the problem. */ | |
791afaa2 | 13430 | std::string dwp_text; |
43942612 DE |
13431 | |
13432 | if (dwp_file != NULL) | |
791afaa2 TT |
13433 | dwp_text = string_printf (" [in DWP file %s]", |
13434 | lbasename (dwp_file->name)); | |
43942612 | 13435 | |
9d8780f0 | 13436 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13437 | " [in module %s]"), |
13438 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13439 | dwp_text.c_str (), |
43942612 | 13440 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13441 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13442 | } |
3019eac3 | 13443 | return NULL; |
5fb290d7 DJ |
13444 | } |
13445 | ||
80626a55 DE |
13446 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13447 | See lookup_dwo_cutu_unit for details. */ | |
13448 | ||
13449 | static struct dwo_unit * | |
13450 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13451 | const char *dwo_name, const char *comp_dir, | |
13452 | ULONGEST signature) | |
13453 | { | |
13454 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13455 | } | |
13456 | ||
13457 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13458 | See lookup_dwo_cutu_unit for details. */ | |
13459 | ||
13460 | static struct dwo_unit * | |
13461 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13462 | const char *dwo_name, const char *comp_dir) | |
13463 | { | |
13464 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13465 | } | |
13466 | ||
89e63ee4 DE |
13467 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13468 | ||
13469 | static int | |
13470 | queue_and_load_dwo_tu (void **slot, void *info) | |
13471 | { | |
13472 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13473 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13474 | ULONGEST signature = dwo_unit->signature; | |
13475 | struct signatured_type *sig_type = | |
13476 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13477 | ||
13478 | if (sig_type != NULL) | |
13479 | { | |
13480 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13481 | ||
13482 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13483 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13484 | while processing PER_CU. */ | |
13485 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13486 | load_full_type_unit (sig_cu); | |
13487 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13488 | } | |
13489 | ||
13490 | return 1; | |
13491 | } | |
13492 | ||
13493 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13494 | The DWO may have the only definition of the type, though it may not be | |
13495 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13496 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13497 | ||
13498 | static void | |
13499 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13500 | { | |
13501 | struct dwo_unit *dwo_unit; | |
13502 | struct dwo_file *dwo_file; | |
13503 | ||
13504 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13505 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13506 | gdb_assert (per_cu->cu != NULL); |
13507 | ||
13508 | dwo_unit = per_cu->cu->dwo_unit; | |
13509 | gdb_assert (dwo_unit != NULL); | |
13510 | ||
13511 | dwo_file = dwo_unit->dwo_file; | |
13512 | if (dwo_file->tus != NULL) | |
13513 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13514 | } | |
13515 | ||
3019eac3 | 13516 | /* Read in various DIEs. */ |
348e048f | 13517 | |
d389af10 | 13518 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13519 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13520 | already referenced by DW_AT_abstract_origin from the children of the | |
13521 | current DIE. */ | |
d389af10 JK |
13522 | |
13523 | static void | |
13524 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13525 | { | |
13526 | struct die_info *child_die; | |
791afaa2 | 13527 | sect_offset *offsetp; |
d389af10 JK |
13528 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13529 | struct die_info *origin_die; | |
13530 | /* Iterator of the ORIGIN_DIE children. */ | |
13531 | struct die_info *origin_child_die; | |
d389af10 | 13532 | struct attribute *attr; |
cd02d79d PA |
13533 | struct dwarf2_cu *origin_cu; |
13534 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13535 | |
13536 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13537 | if (!attr) | |
13538 | return; | |
13539 | ||
cd02d79d PA |
13540 | /* Note that following die references may follow to a die in a |
13541 | different cu. */ | |
13542 | ||
13543 | origin_cu = cu; | |
13544 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13545 | ||
13546 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13547 | symbols in. */ | |
13548 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13549 | origin_cu->list_in_scope = cu->list_in_scope; | |
13550 | ||
edb3359d DJ |
13551 | if (die->tag != origin_die->tag |
13552 | && !(die->tag == DW_TAG_inlined_subroutine | |
13553 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13554 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13555 | sect_offset_str (die->sect_off), |
13556 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13557 | |
791afaa2 | 13558 | std::vector<sect_offset> offsets; |
d389af10 | 13559 | |
3ea89b92 PMR |
13560 | for (child_die = die->child; |
13561 | child_die && child_die->tag; | |
13562 | child_die = sibling_die (child_die)) | |
13563 | { | |
13564 | struct die_info *child_origin_die; | |
13565 | struct dwarf2_cu *child_origin_cu; | |
13566 | ||
13567 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13568 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13569 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13570 | present in the abstract instance but not referenced in the concrete | |
13571 | one. */ | |
216f72a1 JK |
13572 | if (child_die->tag == DW_TAG_call_site |
13573 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13574 | continue; |
13575 | ||
c38f313d DJ |
13576 | /* For each CHILD_DIE, find the corresponding child of |
13577 | ORIGIN_DIE. If there is more than one layer of | |
13578 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13579 | but GCC versions at least through 4.4 generate this (GCC PR | |
13580 | 40573). */ | |
3ea89b92 PMR |
13581 | child_origin_die = child_die; |
13582 | child_origin_cu = cu; | |
c38f313d DJ |
13583 | while (1) |
13584 | { | |
cd02d79d PA |
13585 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13586 | child_origin_cu); | |
c38f313d DJ |
13587 | if (attr == NULL) |
13588 | break; | |
cd02d79d PA |
13589 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13590 | &child_origin_cu); | |
c38f313d DJ |
13591 | } |
13592 | ||
d389af10 JK |
13593 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13594 | counterpart may exist. */ | |
c38f313d | 13595 | if (child_origin_die != child_die) |
d389af10 | 13596 | { |
edb3359d DJ |
13597 | if (child_die->tag != child_origin_die->tag |
13598 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13599 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13600 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13601 | "different tags"), |
9d8780f0 SM |
13602 | sect_offset_str (child_die->sect_off), |
13603 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13604 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13605 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13606 | "different parents"), |
9d8780f0 SM |
13607 | sect_offset_str (child_die->sect_off), |
13608 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13609 | else |
791afaa2 | 13610 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13611 | } |
d389af10 | 13612 | } |
791afaa2 TT |
13613 | std::sort (offsets.begin (), offsets.end ()); |
13614 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13615 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13616 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13617 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13618 | "to DIE %s as their abstract origin"), |
13619 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13620 | |
791afaa2 | 13621 | offsetp = offsets.data (); |
d389af10 JK |
13622 | origin_child_die = origin_die->child; |
13623 | while (origin_child_die && origin_child_die->tag) | |
13624 | { | |
13625 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13626 | while (offsetp < offsets_end |
9c541725 | 13627 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13628 | offsetp++; |
b64f50a1 | 13629 | if (offsetp >= offsets_end |
9c541725 | 13630 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13631 | { |
adde2bff DE |
13632 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13633 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13634 | This can happen with mutually referenced abstract_origins. | |
13635 | PR 16581. */ | |
13636 | if (!origin_child_die->in_process) | |
13637 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13638 | } |
13639 | origin_child_die = sibling_die (origin_child_die); | |
13640 | } | |
cd02d79d | 13641 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13642 | } |
13643 | ||
c906108c | 13644 | static void |
e7c27a73 | 13645 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13646 | { |
518817b3 | 13647 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13648 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13649 | struct context_stack *newobj; |
c906108c SS |
13650 | CORE_ADDR lowpc; |
13651 | CORE_ADDR highpc; | |
13652 | struct die_info *child_die; | |
edb3359d | 13653 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13654 | const char *name; |
e142c38c | 13655 | CORE_ADDR baseaddr; |
801e3a5b | 13656 | struct block *block; |
edb3359d | 13657 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13658 | std::vector<struct symbol *> template_args; |
34eaf542 | 13659 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13660 | |
13661 | if (inlined_func) | |
13662 | { | |
13663 | /* If we do not have call site information, we can't show the | |
13664 | caller of this inlined function. That's too confusing, so | |
13665 | only use the scope for local variables. */ | |
13666 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13667 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13668 | if (call_line == NULL || call_file == NULL) | |
13669 | { | |
13670 | read_lexical_block_scope (die, cu); | |
13671 | return; | |
13672 | } | |
13673 | } | |
c906108c | 13674 | |
e142c38c DJ |
13675 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13676 | ||
94af9270 | 13677 | name = dwarf2_name (die, cu); |
c906108c | 13678 | |
e8d05480 JB |
13679 | /* Ignore functions with missing or empty names. These are actually |
13680 | illegal according to the DWARF standard. */ | |
13681 | if (name == NULL) | |
13682 | { | |
b98664d3 | 13683 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13684 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13685 | return; |
13686 | } | |
13687 | ||
13688 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13689 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13690 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13691 | { |
ae4d0c03 PM |
13692 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13693 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13694 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13695 | "for subprogram DIE at %s"), |
13696 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13697 | return; |
13698 | } | |
c906108c | 13699 | |
3e29f34a MR |
13700 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13701 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13702 | |
34eaf542 TT |
13703 | /* If we have any template arguments, then we must allocate a |
13704 | different sort of symbol. */ | |
13705 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13706 | { | |
13707 | if (child_die->tag == DW_TAG_template_type_param | |
13708 | || child_die->tag == DW_TAG_template_value_param) | |
13709 | { | |
e623cf5d | 13710 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13711 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13712 | break; |
13713 | } | |
13714 | } | |
13715 | ||
c24bdb02 | 13716 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13717 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13718 | (struct symbol *) templ_func); | |
4c2df51b | 13719 | |
81873cc8 TV |
13720 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
13721 | set_objfile_main_name (objfile, SYMBOL_LINKAGE_NAME (newobj->name), | |
13722 | cu->language); | |
13723 | ||
4cecd739 DJ |
13724 | /* If there is a location expression for DW_AT_frame_base, record |
13725 | it. */ | |
e142c38c | 13726 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13727 | if (attr) |
fe978cb0 | 13728 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13729 | |
63e43d3a PMR |
13730 | /* If there is a location for the static link, record it. */ |
13731 | newobj->static_link = NULL; | |
13732 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13733 | if (attr) | |
13734 | { | |
224c3ddb SM |
13735 | newobj->static_link |
13736 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d AB |
13737 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
13738 | dwarf2_per_cu_addr_type (cu->per_cu)); | |
63e43d3a PMR |
13739 | } |
13740 | ||
c24bdb02 | 13741 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13742 | |
639d11d3 | 13743 | if (die->child != NULL) |
c906108c | 13744 | { |
639d11d3 | 13745 | child_die = die->child; |
c906108c SS |
13746 | while (child_die && child_die->tag) |
13747 | { | |
34eaf542 TT |
13748 | if (child_die->tag == DW_TAG_template_type_param |
13749 | || child_die->tag == DW_TAG_template_value_param) | |
13750 | { | |
13751 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13752 | ||
f1078f66 | 13753 | if (arg != NULL) |
2f4732b0 | 13754 | template_args.push_back (arg); |
34eaf542 TT |
13755 | } |
13756 | else | |
13757 | process_die (child_die, cu); | |
c906108c SS |
13758 | child_die = sibling_die (child_die); |
13759 | } | |
13760 | } | |
13761 | ||
d389af10 JK |
13762 | inherit_abstract_dies (die, cu); |
13763 | ||
4a811a97 UW |
13764 | /* If we have a DW_AT_specification, we might need to import using |
13765 | directives from the context of the specification DIE. See the | |
13766 | comment in determine_prefix. */ | |
13767 | if (cu->language == language_cplus | |
13768 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13769 | { | |
13770 | struct dwarf2_cu *spec_cu = cu; | |
13771 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13772 | ||
13773 | while (spec_die) | |
13774 | { | |
13775 | child_die = spec_die->child; | |
13776 | while (child_die && child_die->tag) | |
13777 | { | |
13778 | if (child_die->tag == DW_TAG_imported_module) | |
13779 | process_die (child_die, spec_cu); | |
13780 | child_die = sibling_die (child_die); | |
13781 | } | |
13782 | ||
13783 | /* In some cases, GCC generates specification DIEs that | |
13784 | themselves contain DW_AT_specification attributes. */ | |
13785 | spec_die = die_specification (spec_die, &spec_cu); | |
13786 | } | |
13787 | } | |
13788 | ||
c24bdb02 | 13789 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13790 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13791 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13792 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13793 | |
df8a16a1 | 13794 | /* For C++, set the block's scope. */ |
45280282 IB |
13795 | if ((cu->language == language_cplus |
13796 | || cu->language == language_fortran | |
c44af4eb TT |
13797 | || cu->language == language_d |
13798 | || cu->language == language_rust) | |
4d4ec4e5 | 13799 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13800 | block_set_scope (block, determine_prefix (die, cu), |
13801 | &objfile->objfile_obstack); | |
df8a16a1 | 13802 | |
801e3a5b JB |
13803 | /* If we have address ranges, record them. */ |
13804 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13805 | |
a60f3166 | 13806 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13807 | |
34eaf542 | 13808 | /* Attach template arguments to function. */ |
2f4732b0 | 13809 | if (!template_args.empty ()) |
34eaf542 TT |
13810 | { |
13811 | gdb_assert (templ_func != NULL); | |
13812 | ||
2f4732b0 | 13813 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13814 | templ_func->template_arguments |
8d749320 SM |
13815 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13816 | templ_func->n_template_arguments); | |
34eaf542 | 13817 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13818 | template_args.data (), |
34eaf542 | 13819 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13820 | |
13821 | /* Make sure that the symtab is set on the new symbols. Even | |
13822 | though they don't appear in this symtab directly, other parts | |
13823 | of gdb assume that symbols do, and this is reasonably | |
13824 | true. */ | |
8634679f | 13825 | for (symbol *sym : template_args) |
3e1d3d8c | 13826 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13827 | } |
13828 | ||
208d8187 JB |
13829 | /* In C++, we can have functions nested inside functions (e.g., when |
13830 | a function declares a class that has methods). This means that | |
13831 | when we finish processing a function scope, we may need to go | |
13832 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13833 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13834 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13835 | |
921e78cf JB |
13836 | /* If we've finished processing a top-level function, subsequent |
13837 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13838 | if (cu->get_builder ()->outermost_context_p ()) |
13839 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13840 | } |
13841 | ||
13842 | /* Process all the DIES contained within a lexical block scope. Start | |
13843 | a new scope, process the dies, and then close the scope. */ | |
13844 | ||
13845 | static void | |
e7c27a73 | 13846 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13847 | { |
518817b3 | 13848 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13849 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13850 | CORE_ADDR lowpc, highpc; |
13851 | struct die_info *child_die; | |
e142c38c DJ |
13852 | CORE_ADDR baseaddr; |
13853 | ||
13854 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13855 | |
13856 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13857 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13858 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13859 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13860 | describe ranges. */ |
e385593e JK |
13861 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13862 | { | |
13863 | case PC_BOUNDS_NOT_PRESENT: | |
13864 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13865 | there was no wrapping by that DW_TAG_lexical_block. | |
13866 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13867 | for (child_die = die->child; | |
13868 | child_die != NULL && child_die->tag; | |
13869 | child_die = sibling_die (child_die)) | |
13870 | process_die (child_die, cu); | |
13871 | return; | |
13872 | case PC_BOUNDS_INVALID: | |
13873 | return; | |
13874 | } | |
3e29f34a MR |
13875 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13876 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13877 | |
c24bdb02 | 13878 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13879 | if (die->child != NULL) |
c906108c | 13880 | { |
639d11d3 | 13881 | child_die = die->child; |
c906108c SS |
13882 | while (child_die && child_die->tag) |
13883 | { | |
e7c27a73 | 13884 | process_die (child_die, cu); |
c906108c SS |
13885 | child_die = sibling_die (child_die); |
13886 | } | |
13887 | } | |
3ea89b92 | 13888 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13889 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13890 | |
c24bdb02 KS |
13891 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13892 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13893 | { |
801e3a5b | 13894 | struct block *block |
c24bdb02 | 13895 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13896 | cstk.start_addr, highpc); |
801e3a5b JB |
13897 | |
13898 | /* Note that recording ranges after traversing children, as we | |
13899 | do here, means that recording a parent's ranges entails | |
13900 | walking across all its children's ranges as they appear in | |
13901 | the address map, which is quadratic behavior. | |
13902 | ||
13903 | It would be nicer to record the parent's ranges before | |
13904 | traversing its children, simply overriding whatever you find | |
13905 | there. But since we don't even decide whether to create a | |
13906 | block until after we've traversed its children, that's hard | |
13907 | to do. */ | |
13908 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13909 | } |
c24bdb02 KS |
13910 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13911 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13912 | } |
13913 | ||
216f72a1 | 13914 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13915 | |
13916 | static void | |
13917 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13918 | { | |
518817b3 | 13919 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13920 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13921 | CORE_ADDR pc, baseaddr; | |
13922 | struct attribute *attr; | |
13923 | struct call_site *call_site, call_site_local; | |
13924 | void **slot; | |
13925 | int nparams; | |
13926 | struct die_info *child_die; | |
13927 | ||
13928 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13929 | ||
216f72a1 JK |
13930 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13931 | if (attr == NULL) | |
13932 | { | |
13933 | /* This was a pre-DWARF-5 GNU extension alias | |
13934 | for DW_AT_call_return_pc. */ | |
13935 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13936 | } | |
96408a79 SA |
13937 | if (!attr) |
13938 | { | |
b98664d3 | 13939 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13940 | "DIE %s [in module %s]"), |
13941 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13942 | return; |
13943 | } | |
31aa7e4e | 13944 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13945 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13946 | |
13947 | if (cu->call_site_htab == NULL) | |
13948 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13949 | NULL, &objfile->objfile_obstack, | |
13950 | hashtab_obstack_allocate, NULL); | |
13951 | call_site_local.pc = pc; | |
13952 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13953 | if (*slot != NULL) | |
13954 | { | |
b98664d3 | 13955 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13956 | "DIE %s [in module %s]"), |
13957 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13958 | objfile_name (objfile)); |
96408a79 SA |
13959 | return; |
13960 | } | |
13961 | ||
13962 | /* Count parameters at the caller. */ | |
13963 | ||
13964 | nparams = 0; | |
13965 | for (child_die = die->child; child_die && child_die->tag; | |
13966 | child_die = sibling_die (child_die)) | |
13967 | { | |
216f72a1 JK |
13968 | if (child_die->tag != DW_TAG_call_site_parameter |
13969 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13970 | { |
b98664d3 | 13971 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13972 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13973 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13974 | objfile_name (objfile)); |
96408a79 SA |
13975 | continue; |
13976 | } | |
13977 | ||
13978 | nparams++; | |
13979 | } | |
13980 | ||
224c3ddb SM |
13981 | call_site |
13982 | = ((struct call_site *) | |
13983 | obstack_alloc (&objfile->objfile_obstack, | |
13984 | sizeof (*call_site) | |
13985 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13986 | *slot = call_site; |
13987 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13988 | call_site->pc = pc; | |
13989 | ||
216f72a1 JK |
13990 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13991 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13992 | { |
13993 | struct die_info *func_die; | |
13994 | ||
13995 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13996 | for (func_die = die->parent; | |
13997 | func_die && func_die->tag != DW_TAG_subprogram | |
13998 | && func_die->tag != DW_TAG_subroutine_type; | |
13999 | func_die = func_die->parent); | |
14000 | ||
216f72a1 JK |
14001 | /* DW_AT_call_all_calls is a superset |
14002 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14003 | if (func_die |
216f72a1 | 14004 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14005 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14006 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14007 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14008 | { | |
14009 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14010 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14011 | both the initial caller containing the real return address PC and | |
14012 | the final callee containing the current PC of a chain of tail | |
14013 | calls do not need to have the tail call list complete. But any | |
14014 | function candidate for a virtual tail call frame searched via | |
14015 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14016 | determined unambiguously. */ | |
14017 | } | |
14018 | else | |
14019 | { | |
14020 | struct type *func_type = NULL; | |
14021 | ||
14022 | if (func_die) | |
14023 | func_type = get_die_type (func_die, cu); | |
14024 | if (func_type != NULL) | |
14025 | { | |
14026 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14027 | ||
14028 | /* Enlist this call site to the function. */ | |
14029 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14030 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14031 | } | |
14032 | else | |
b98664d3 | 14033 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14034 | "DIE %s [in module %s]"), |
14035 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14036 | } |
14037 | } | |
14038 | ||
216f72a1 JK |
14039 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14040 | if (attr == NULL) | |
14041 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14042 | if (attr == NULL) | |
14043 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14044 | if (attr == NULL) |
216f72a1 JK |
14045 | { |
14046 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14047 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14048 | } | |
96408a79 SA |
14049 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14050 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14051 | /* Keep NULL DWARF_BLOCK. */; | |
14052 | else if (attr_form_is_block (attr)) | |
14053 | { | |
14054 | struct dwarf2_locexpr_baton *dlbaton; | |
14055 | ||
8d749320 | 14056 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14057 | dlbaton->data = DW_BLOCK (attr)->data; |
14058 | dlbaton->size = DW_BLOCK (attr)->size; | |
14059 | dlbaton->per_cu = cu->per_cu; | |
14060 | ||
14061 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14062 | } | |
7771576e | 14063 | else if (attr_form_is_ref (attr)) |
96408a79 | 14064 | { |
96408a79 SA |
14065 | struct dwarf2_cu *target_cu = cu; |
14066 | struct die_info *target_die; | |
14067 | ||
ac9ec31b | 14068 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14069 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14070 | if (die_is_declaration (target_die, target_cu)) |
14071 | { | |
7d45c7c3 | 14072 | const char *target_physname; |
9112db09 JK |
14073 | |
14074 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14075 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14076 | if (target_physname == NULL) |
9112db09 | 14077 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14078 | if (target_physname == NULL) |
b98664d3 | 14079 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14080 | "physname, for referencing DIE %s [in module %s]"), |
14081 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14082 | else |
7d455152 | 14083 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14084 | } |
14085 | else | |
14086 | { | |
14087 | CORE_ADDR lowpc; | |
14088 | ||
14089 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14090 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14091 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14092 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14093 | "low pc, for referencing DIE %s [in module %s]"), |
14094 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14095 | else |
3e29f34a MR |
14096 | { |
14097 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14098 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14099 | } | |
96408a79 SA |
14100 | } |
14101 | } | |
14102 | else | |
b98664d3 | 14103 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14104 | "block nor reference, for DIE %s [in module %s]"), |
14105 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14106 | |
14107 | call_site->per_cu = cu->per_cu; | |
14108 | ||
14109 | for (child_die = die->child; | |
14110 | child_die && child_die->tag; | |
14111 | child_die = sibling_die (child_die)) | |
14112 | { | |
96408a79 | 14113 | struct call_site_parameter *parameter; |
1788b2d3 | 14114 | struct attribute *loc, *origin; |
96408a79 | 14115 | |
216f72a1 JK |
14116 | if (child_die->tag != DW_TAG_call_site_parameter |
14117 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14118 | { |
14119 | /* Already printed the complaint above. */ | |
14120 | continue; | |
14121 | } | |
14122 | ||
14123 | gdb_assert (call_site->parameter_count < nparams); | |
14124 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14125 | ||
1788b2d3 JK |
14126 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14127 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14128 | register is contained in DW_AT_call_value. */ |
96408a79 | 14129 | |
24c5c679 | 14130 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14131 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14132 | if (origin == NULL) | |
14133 | { | |
14134 | /* This was a pre-DWARF-5 GNU extension alias | |
14135 | for DW_AT_call_parameter. */ | |
14136 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14137 | } | |
7771576e | 14138 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14139 | { |
1788b2d3 | 14140 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14141 | |
14142 | sect_offset sect_off | |
14143 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14144 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14145 | { |
14146 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14147 | binding can be done only inside one CU. Such referenced DIE | |
14148 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14149 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14150 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14151 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14152 | objfile_name (objfile)); |
d76b7dbc JK |
14153 | continue; |
14154 | } | |
9c541725 PA |
14155 | parameter->u.param_cu_off |
14156 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14157 | } |
14158 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14159 | { |
b98664d3 | 14160 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14161 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14162 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14163 | continue; |
14164 | } | |
24c5c679 | 14165 | else |
96408a79 | 14166 | { |
24c5c679 JK |
14167 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14168 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14169 | if (parameter->u.dwarf_reg != -1) | |
14170 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14171 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14172 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14173 | ¶meter->u.fb_offset)) | |
14174 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14175 | else | |
14176 | { | |
b98664d3 | 14177 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14178 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14179 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14180 | "[in module %s]"), |
9d8780f0 | 14181 | sect_offset_str (child_die->sect_off), |
9c541725 | 14182 | objfile_name (objfile)); |
24c5c679 JK |
14183 | continue; |
14184 | } | |
96408a79 SA |
14185 | } |
14186 | ||
216f72a1 JK |
14187 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14188 | if (attr == NULL) | |
14189 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14190 | if (!attr_form_is_block (attr)) |
14191 | { | |
b98664d3 | 14192 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14193 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14194 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14195 | objfile_name (objfile)); |
96408a79 SA |
14196 | continue; |
14197 | } | |
14198 | parameter->value = DW_BLOCK (attr)->data; | |
14199 | parameter->value_size = DW_BLOCK (attr)->size; | |
14200 | ||
14201 | /* Parameters are not pre-cleared by memset above. */ | |
14202 | parameter->data_value = NULL; | |
14203 | parameter->data_value_size = 0; | |
14204 | call_site->parameter_count++; | |
14205 | ||
216f72a1 JK |
14206 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14207 | if (attr == NULL) | |
14208 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14209 | if (attr) |
14210 | { | |
14211 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14212 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14213 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14214 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14215 | objfile_name (objfile)); |
96408a79 SA |
14216 | else |
14217 | { | |
14218 | parameter->data_value = DW_BLOCK (attr)->data; | |
14219 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14220 | } | |
14221 | } | |
14222 | } | |
14223 | } | |
14224 | ||
71a3c369 TT |
14225 | /* Helper function for read_variable. If DIE represents a virtual |
14226 | table, then return the type of the concrete object that is | |
14227 | associated with the virtual table. Otherwise, return NULL. */ | |
14228 | ||
14229 | static struct type * | |
14230 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14231 | { | |
14232 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14233 | if (attr == NULL) | |
14234 | return NULL; | |
14235 | ||
14236 | /* Find the type DIE. */ | |
14237 | struct die_info *type_die = NULL; | |
14238 | struct dwarf2_cu *type_cu = cu; | |
14239 | ||
14240 | if (attr_form_is_ref (attr)) | |
14241 | type_die = follow_die_ref (die, attr, &type_cu); | |
14242 | if (type_die == NULL) | |
14243 | return NULL; | |
14244 | ||
14245 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14246 | return NULL; | |
14247 | return die_containing_type (type_die, type_cu); | |
14248 | } | |
14249 | ||
14250 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14251 | ||
14252 | static void | |
14253 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14254 | { | |
14255 | struct rust_vtable_symbol *storage = NULL; | |
14256 | ||
14257 | if (cu->language == language_rust) | |
14258 | { | |
14259 | struct type *containing_type = rust_containing_type (die, cu); | |
14260 | ||
14261 | if (containing_type != NULL) | |
14262 | { | |
518817b3 | 14263 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14264 | |
14265 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14266 | struct rust_vtable_symbol); | |
14267 | initialize_objfile_symbol (storage); | |
14268 | storage->concrete_type = containing_type; | |
cf724bc9 | 14269 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14270 | } |
14271 | } | |
14272 | ||
e4a62c65 TV |
14273 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14274 | struct attribute *abstract_origin | |
14275 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14276 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14277 | if (res == NULL && loc && abstract_origin) | |
14278 | { | |
14279 | /* We have a variable without a name, but with a location and an abstract | |
14280 | origin. This may be a concrete instance of an abstract variable | |
14281 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14282 | later. */ | |
14283 | struct dwarf2_cu *origin_cu = cu; | |
14284 | struct die_info *origin_die | |
14285 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14286 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 14287 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 14288 | } |
71a3c369 TT |
14289 | } |
14290 | ||
43988095 JK |
14291 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14292 | reading .debug_rnglists. | |
14293 | Callback's type should be: | |
14294 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14295 | Return true if the attributes are present and valid, otherwise, | |
14296 | return false. */ | |
14297 | ||
14298 | template <typename Callback> | |
14299 | static bool | |
14300 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14301 | Callback &&callback) | |
14302 | { | |
ed2dc618 | 14303 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14304 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14305 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14306 | bfd *obfd = objfile->obfd; |
43988095 JK |
14307 | /* Base address selection entry. */ |
14308 | CORE_ADDR base; | |
14309 | int found_base; | |
43988095 | 14310 | const gdb_byte *buffer; |
43988095 JK |
14311 | CORE_ADDR baseaddr; |
14312 | bool overflow = false; | |
14313 | ||
14314 | found_base = cu->base_known; | |
14315 | base = cu->base_address; | |
14316 | ||
14317 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14318 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14319 | { | |
b98664d3 | 14320 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14321 | offset); |
14322 | return false; | |
14323 | } | |
14324 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14325 | ||
14326 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14327 | ||
14328 | while (1) | |
14329 | { | |
7814882a JK |
14330 | /* Initialize it due to a false compiler warning. */ |
14331 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14332 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14333 | + dwarf2_per_objfile->rnglists.size); | |
14334 | unsigned int bytes_read; | |
14335 | ||
14336 | if (buffer == buf_end) | |
14337 | { | |
14338 | overflow = true; | |
14339 | break; | |
14340 | } | |
14341 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14342 | switch (rlet) | |
14343 | { | |
14344 | case DW_RLE_end_of_list: | |
14345 | break; | |
14346 | case DW_RLE_base_address: | |
14347 | if (buffer + cu->header.addr_size > buf_end) | |
14348 | { | |
14349 | overflow = true; | |
14350 | break; | |
14351 | } | |
14352 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14353 | found_base = 1; | |
14354 | buffer += bytes_read; | |
14355 | break; | |
14356 | case DW_RLE_start_length: | |
14357 | if (buffer + cu->header.addr_size > buf_end) | |
14358 | { | |
14359 | overflow = true; | |
14360 | break; | |
14361 | } | |
14362 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14363 | buffer += bytes_read; | |
14364 | range_end = (range_beginning | |
14365 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14366 | buffer += bytes_read; | |
14367 | if (buffer > buf_end) | |
14368 | { | |
14369 | overflow = true; | |
14370 | break; | |
14371 | } | |
14372 | break; | |
14373 | case DW_RLE_offset_pair: | |
14374 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14375 | buffer += bytes_read; | |
14376 | if (buffer > buf_end) | |
14377 | { | |
14378 | overflow = true; | |
14379 | break; | |
14380 | } | |
14381 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14382 | buffer += bytes_read; | |
14383 | if (buffer > buf_end) | |
14384 | { | |
14385 | overflow = true; | |
14386 | break; | |
14387 | } | |
14388 | break; | |
14389 | case DW_RLE_start_end: | |
14390 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14391 | { | |
14392 | overflow = true; | |
14393 | break; | |
14394 | } | |
14395 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14396 | buffer += bytes_read; | |
14397 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14398 | buffer += bytes_read; | |
14399 | break; | |
14400 | default: | |
b98664d3 | 14401 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14402 | return false; |
14403 | } | |
14404 | if (rlet == DW_RLE_end_of_list || overflow) | |
14405 | break; | |
14406 | if (rlet == DW_RLE_base_address) | |
14407 | continue; | |
14408 | ||
14409 | if (!found_base) | |
14410 | { | |
14411 | /* We have no valid base address for the ranges | |
14412 | data. */ | |
b98664d3 | 14413 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14414 | return false; |
14415 | } | |
14416 | ||
14417 | if (range_beginning > range_end) | |
14418 | { | |
14419 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14420 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14421 | return false; |
14422 | } | |
14423 | ||
14424 | /* Empty range entries have no effect. */ | |
14425 | if (range_beginning == range_end) | |
14426 | continue; | |
14427 | ||
14428 | range_beginning += base; | |
14429 | range_end += base; | |
14430 | ||
14431 | /* A not-uncommon case of bad debug info. | |
14432 | Don't pollute the addrmap with bad data. */ | |
14433 | if (range_beginning + baseaddr == 0 | |
14434 | && !dwarf2_per_objfile->has_section_at_zero) | |
14435 | { | |
b98664d3 | 14436 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14437 | " [in module %s]"), objfile_name (objfile)); |
14438 | continue; | |
14439 | } | |
14440 | ||
14441 | callback (range_beginning, range_end); | |
14442 | } | |
14443 | ||
14444 | if (overflow) | |
14445 | { | |
b98664d3 | 14446 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14447 | "for DW_AT_ranges attribute"), |
14448 | offset); | |
14449 | return false; | |
14450 | } | |
14451 | ||
14452 | return true; | |
14453 | } | |
14454 | ||
14455 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14456 | Callback's type should be: | |
14457 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14458 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14459 | |
43988095 | 14460 | template <typename Callback> |
43039443 | 14461 | static int |
5f46c5a5 | 14462 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14463 | Callback &&callback) |
43039443 | 14464 | { |
ed2dc618 | 14465 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14466 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14467 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14468 | struct comp_unit_head *cu_header = &cu->header; |
14469 | bfd *obfd = objfile->obfd; | |
14470 | unsigned int addr_size = cu_header->addr_size; | |
14471 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14472 | /* Base address selection entry. */ | |
14473 | CORE_ADDR base; | |
14474 | int found_base; | |
14475 | unsigned int dummy; | |
d521ce57 | 14476 | const gdb_byte *buffer; |
ff013f42 | 14477 | CORE_ADDR baseaddr; |
43039443 | 14478 | |
43988095 JK |
14479 | if (cu_header->version >= 5) |
14480 | return dwarf2_rnglists_process (offset, cu, callback); | |
14481 | ||
d00adf39 DE |
14482 | found_base = cu->base_known; |
14483 | base = cu->base_address; | |
43039443 | 14484 | |
be391dca | 14485 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14486 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14487 | { |
b98664d3 | 14488 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14489 | offset); |
14490 | return 0; | |
14491 | } | |
dce234bc | 14492 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14493 | |
e7030f15 | 14494 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14495 | |
43039443 JK |
14496 | while (1) |
14497 | { | |
14498 | CORE_ADDR range_beginning, range_end; | |
14499 | ||
14500 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14501 | buffer += addr_size; | |
14502 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14503 | buffer += addr_size; | |
14504 | offset += 2 * addr_size; | |
14505 | ||
14506 | /* An end of list marker is a pair of zero addresses. */ | |
14507 | if (range_beginning == 0 && range_end == 0) | |
14508 | /* Found the end of list entry. */ | |
14509 | break; | |
14510 | ||
14511 | /* Each base address selection entry is a pair of 2 values. | |
14512 | The first is the largest possible address, the second is | |
14513 | the base address. Check for a base address here. */ | |
14514 | if ((range_beginning & mask) == mask) | |
14515 | { | |
28d2bfb9 AB |
14516 | /* If we found the largest possible address, then we already |
14517 | have the base address in range_end. */ | |
14518 | base = range_end; | |
43039443 JK |
14519 | found_base = 1; |
14520 | continue; | |
14521 | } | |
14522 | ||
14523 | if (!found_base) | |
14524 | { | |
14525 | /* We have no valid base address for the ranges | |
14526 | data. */ | |
b98664d3 | 14527 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14528 | return 0; |
14529 | } | |
14530 | ||
9277c30c UW |
14531 | if (range_beginning > range_end) |
14532 | { | |
14533 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14534 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14535 | return 0; |
14536 | } | |
14537 | ||
14538 | /* Empty range entries have no effect. */ | |
14539 | if (range_beginning == range_end) | |
14540 | continue; | |
14541 | ||
43039443 JK |
14542 | range_beginning += base; |
14543 | range_end += base; | |
14544 | ||
01093045 DE |
14545 | /* A not-uncommon case of bad debug info. |
14546 | Don't pollute the addrmap with bad data. */ | |
14547 | if (range_beginning + baseaddr == 0 | |
14548 | && !dwarf2_per_objfile->has_section_at_zero) | |
14549 | { | |
b98664d3 | 14550 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14551 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14552 | continue; |
14553 | } | |
14554 | ||
5f46c5a5 JK |
14555 | callback (range_beginning, range_end); |
14556 | } | |
14557 | ||
14558 | return 1; | |
14559 | } | |
14560 | ||
14561 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14562 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14563 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14564 | ||
14565 | static int | |
14566 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14567 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14568 | struct partial_symtab *ranges_pst) | |
14569 | { | |
518817b3 | 14570 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14571 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14572 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14573 | SECT_OFF_TEXT (objfile)); | |
14574 | int low_set = 0; | |
14575 | CORE_ADDR low = 0; | |
14576 | CORE_ADDR high = 0; | |
14577 | int retval; | |
14578 | ||
14579 | retval = dwarf2_ranges_process (offset, cu, | |
14580 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14581 | { | |
9277c30c | 14582 | if (ranges_pst != NULL) |
3e29f34a MR |
14583 | { |
14584 | CORE_ADDR lowpc; | |
14585 | CORE_ADDR highpc; | |
14586 | ||
79748972 TT |
14587 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14588 | range_beginning + baseaddr) | |
14589 | - baseaddr); | |
14590 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14591 | range_end + baseaddr) | |
14592 | - baseaddr); | |
d320c2b5 TT |
14593 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14594 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14595 | } |
ff013f42 | 14596 | |
43039443 JK |
14597 | /* FIXME: This is recording everything as a low-high |
14598 | segment of consecutive addresses. We should have a | |
14599 | data structure for discontiguous block ranges | |
14600 | instead. */ | |
14601 | if (! low_set) | |
14602 | { | |
14603 | low = range_beginning; | |
14604 | high = range_end; | |
14605 | low_set = 1; | |
14606 | } | |
14607 | else | |
14608 | { | |
14609 | if (range_beginning < low) | |
14610 | low = range_beginning; | |
14611 | if (range_end > high) | |
14612 | high = range_end; | |
14613 | } | |
5f46c5a5 JK |
14614 | }); |
14615 | if (!retval) | |
14616 | return 0; | |
43039443 JK |
14617 | |
14618 | if (! low_set) | |
14619 | /* If the first entry is an end-of-list marker, the range | |
14620 | describes an empty scope, i.e. no instructions. */ | |
14621 | return 0; | |
14622 | ||
14623 | if (low_return) | |
14624 | *low_return = low; | |
14625 | if (high_return) | |
14626 | *high_return = high; | |
14627 | return 1; | |
14628 | } | |
14629 | ||
3a2b436a JK |
14630 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14631 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14632 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14633 | |
3a2b436a | 14634 | static enum pc_bounds_kind |
af34e669 | 14635 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14636 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14637 | struct partial_symtab *pst) | |
c906108c | 14638 | { |
518817b3 SM |
14639 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14640 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14641 | struct attribute *attr; |
91da1414 | 14642 | struct attribute *attr_high; |
af34e669 DJ |
14643 | CORE_ADDR low = 0; |
14644 | CORE_ADDR high = 0; | |
e385593e | 14645 | enum pc_bounds_kind ret; |
c906108c | 14646 | |
91da1414 MW |
14647 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14648 | if (attr_high) | |
af34e669 | 14649 | { |
e142c38c | 14650 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14651 | if (attr) |
91da1414 | 14652 | { |
31aa7e4e JB |
14653 | low = attr_value_as_address (attr); |
14654 | high = attr_value_as_address (attr_high); | |
14655 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14656 | high += low; | |
91da1414 | 14657 | } |
af34e669 DJ |
14658 | else |
14659 | /* Found high w/o low attribute. */ | |
e385593e | 14660 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14661 | |
14662 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14663 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14664 | } |
c906108c | 14665 | else |
af34e669 | 14666 | { |
e142c38c | 14667 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14668 | if (attr != NULL) |
14669 | { | |
ab435259 DE |
14670 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14671 | We take advantage of the fact that DW_AT_ranges does not appear | |
14672 | in DW_TAG_compile_unit of DWO files. */ | |
14673 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14674 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14675 | + (need_ranges_base | |
14676 | ? cu->ranges_base | |
14677 | : 0)); | |
2e3cf129 | 14678 | |
af34e669 | 14679 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14680 | .debug_ranges section. */ |
2e3cf129 | 14681 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14682 | return PC_BOUNDS_INVALID; |
43039443 | 14683 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14684 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14685 | } |
e385593e JK |
14686 | else |
14687 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14688 | } |
c906108c | 14689 | |
48fbe735 | 14690 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14691 | if (high <= low) |
e385593e | 14692 | return PC_BOUNDS_INVALID; |
c906108c SS |
14693 | |
14694 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14695 | eliminate duplicate copies of functions and vtables and such. | |
14696 | The linker will arbitrarily choose one and discard the others. | |
14697 | The AT_*_pc values for such functions refer to local labels in | |
14698 | these sections. If the section from that file was discarded, the | |
14699 | labels are not in the output, so the relocs get a value of 0. | |
14700 | If this is a discarded function, mark the pc bounds as invalid, | |
14701 | so that GDB will ignore it. */ | |
72dca2f5 | 14702 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14703 | return PC_BOUNDS_INVALID; |
c906108c SS |
14704 | |
14705 | *lowpc = low; | |
96408a79 SA |
14706 | if (highpc) |
14707 | *highpc = high; | |
af34e669 | 14708 | return ret; |
c906108c SS |
14709 | } |
14710 | ||
b084d499 JB |
14711 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14712 | its low and high PC addresses. Do nothing if these addresses could not | |
14713 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14714 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14715 | ||
14716 | static void | |
14717 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14718 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14719 | struct dwarf2_cu *cu) | |
14720 | { | |
14721 | CORE_ADDR low, high; | |
14722 | struct die_info *child = die->child; | |
14723 | ||
e385593e | 14724 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14725 | { |
325fac50 PA |
14726 | *lowpc = std::min (*lowpc, low); |
14727 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14728 | } |
14729 | ||
14730 | /* If the language does not allow nested subprograms (either inside | |
14731 | subprograms or lexical blocks), we're done. */ | |
14732 | if (cu->language != language_ada) | |
14733 | return; | |
6e70227d | 14734 | |
b084d499 JB |
14735 | /* Check all the children of the given DIE. If it contains nested |
14736 | subprograms, then check their pc bounds. Likewise, we need to | |
14737 | check lexical blocks as well, as they may also contain subprogram | |
14738 | definitions. */ | |
14739 | while (child && child->tag) | |
14740 | { | |
14741 | if (child->tag == DW_TAG_subprogram | |
14742 | || child->tag == DW_TAG_lexical_block) | |
14743 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14744 | child = sibling_die (child); | |
14745 | } | |
14746 | } | |
14747 | ||
fae299cd DC |
14748 | /* Get the low and high pc's represented by the scope DIE, and store |
14749 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14750 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14751 | ||
14752 | static void | |
14753 | get_scope_pc_bounds (struct die_info *die, | |
14754 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14755 | struct dwarf2_cu *cu) | |
14756 | { | |
14757 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14758 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14759 | CORE_ADDR current_low, current_high; | |
14760 | ||
3a2b436a | 14761 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14762 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14763 | { |
14764 | best_low = current_low; | |
14765 | best_high = current_high; | |
14766 | } | |
14767 | else | |
14768 | { | |
14769 | struct die_info *child = die->child; | |
14770 | ||
14771 | while (child && child->tag) | |
14772 | { | |
14773 | switch (child->tag) { | |
14774 | case DW_TAG_subprogram: | |
b084d499 | 14775 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14776 | break; |
14777 | case DW_TAG_namespace: | |
f55ee35c | 14778 | case DW_TAG_module: |
fae299cd DC |
14779 | /* FIXME: carlton/2004-01-16: Should we do this for |
14780 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14781 | that current GCC's always emit the DIEs corresponding | |
14782 | to definitions of methods of classes as children of a | |
14783 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14784 | the DIEs giving the declarations, which could be | |
14785 | anywhere). But I don't see any reason why the | |
14786 | standards says that they have to be there. */ | |
14787 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14788 | ||
14789 | if (current_low != ((CORE_ADDR) -1)) | |
14790 | { | |
325fac50 PA |
14791 | best_low = std::min (best_low, current_low); |
14792 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14793 | } |
14794 | break; | |
14795 | default: | |
0963b4bd | 14796 | /* Ignore. */ |
fae299cd DC |
14797 | break; |
14798 | } | |
14799 | ||
14800 | child = sibling_die (child); | |
14801 | } | |
14802 | } | |
14803 | ||
14804 | *lowpc = best_low; | |
14805 | *highpc = best_high; | |
14806 | } | |
14807 | ||
801e3a5b JB |
14808 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14809 | in DIE. */ | |
380bca97 | 14810 | |
801e3a5b JB |
14811 | static void |
14812 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14813 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14814 | { | |
518817b3 | 14815 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14816 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14817 | struct attribute *attr; |
91da1414 | 14818 | struct attribute *attr_high; |
801e3a5b | 14819 | |
91da1414 MW |
14820 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14821 | if (attr_high) | |
801e3a5b | 14822 | { |
801e3a5b JB |
14823 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14824 | if (attr) | |
14825 | { | |
31aa7e4e JB |
14826 | CORE_ADDR low = attr_value_as_address (attr); |
14827 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14828 | ||
14829 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14830 | high += low; | |
9a619af0 | 14831 | |
3e29f34a MR |
14832 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14833 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14834 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14835 | } |
14836 | } | |
14837 | ||
14838 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14839 | if (attr) | |
14840 | { | |
ab435259 DE |
14841 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14842 | We take advantage of the fact that DW_AT_ranges does not appear | |
14843 | in DW_TAG_compile_unit of DWO files. */ | |
14844 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14845 | |
14846 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14847 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14848 | unsigned long offset = (DW_UNSND (attr) |
14849 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14850 | |
2d5f09ec | 14851 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14852 | dwarf2_ranges_process (offset, cu, |
14853 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14854 | { | |
58fdfd2c JK |
14855 | start += baseaddr; |
14856 | end += baseaddr; | |
5f46c5a5 JK |
14857 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14858 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14859 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14860 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14861 | }); |
2d5f09ec KB |
14862 | |
14863 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14864 | } |
14865 | } | |
14866 | ||
685b1105 JK |
14867 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14868 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14869 | |
685b1105 JK |
14870 | static void |
14871 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14872 | { |
38360086 | 14873 | int major, minor; |
60d5a603 JK |
14874 | |
14875 | if (cu->producer == NULL) | |
14876 | { | |
14877 | /* For unknown compilers expect their behavior is DWARF version | |
14878 | compliant. | |
14879 | ||
14880 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14881 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14882 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14883 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14884 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14885 | } |
b1ffba5a | 14886 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14887 | { |
38360086 MW |
14888 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14889 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14890 | } |
5230b05a | 14891 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14892 | { |
14893 | cu->producer_is_icc = true; | |
14894 | cu->producer_is_icc_lt_14 = major < 14; | |
14895 | } | |
c258c396 JD |
14896 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14897 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14898 | else |
14899 | { | |
14900 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14901 | compliant. */ | |
60d5a603 JK |
14902 | } |
14903 | ||
9068261f | 14904 | cu->checked_producer = true; |
685b1105 | 14905 | } |
ba919b58 | 14906 | |
685b1105 JK |
14907 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14908 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14909 | during 4.6.0 experimental. */ | |
14910 | ||
9068261f | 14911 | static bool |
685b1105 JK |
14912 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14913 | { | |
14914 | if (!cu->checked_producer) | |
14915 | check_producer (cu); | |
14916 | ||
14917 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14918 | } |
14919 | ||
c258c396 JD |
14920 | |
14921 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14922 | with incorrect is_stmt attributes. */ | |
14923 | ||
14924 | static bool | |
14925 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14926 | { | |
14927 | if (!cu->checked_producer) | |
14928 | check_producer (cu); | |
14929 | ||
14930 | return cu->producer_is_codewarrior; | |
14931 | } | |
14932 | ||
60d5a603 JK |
14933 | /* Return the default accessibility type if it is not overriden by |
14934 | DW_AT_accessibility. */ | |
14935 | ||
14936 | static enum dwarf_access_attribute | |
14937 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14938 | { | |
14939 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14940 | { | |
14941 | /* The default DWARF 2 accessibility for members is public, the default | |
14942 | accessibility for inheritance is private. */ | |
14943 | ||
14944 | if (die->tag != DW_TAG_inheritance) | |
14945 | return DW_ACCESS_public; | |
14946 | else | |
14947 | return DW_ACCESS_private; | |
14948 | } | |
14949 | else | |
14950 | { | |
14951 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14952 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14953 | depends on the container kind. */ | |
14954 | ||
14955 | if (die->parent->tag == DW_TAG_class_type) | |
14956 | return DW_ACCESS_private; | |
14957 | else | |
14958 | return DW_ACCESS_public; | |
14959 | } | |
14960 | } | |
14961 | ||
74ac6d43 TT |
14962 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14963 | offset. If the attribute was not found return 0, otherwise return | |
14964 | 1. If it was found but could not properly be handled, set *OFFSET | |
14965 | to 0. */ | |
14966 | ||
14967 | static int | |
14968 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14969 | LONGEST *offset) | |
14970 | { | |
14971 | struct attribute *attr; | |
14972 | ||
14973 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14974 | if (attr != NULL) | |
14975 | { | |
14976 | *offset = 0; | |
14977 | ||
14978 | /* Note that we do not check for a section offset first here. | |
14979 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14980 | so if we see it, we can assume that a constant form is really | |
14981 | a constant and not a section offset. */ | |
14982 | if (attr_form_is_constant (attr)) | |
14983 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14984 | else if (attr_form_is_section_offset (attr)) | |
14985 | dwarf2_complex_location_expr_complaint (); | |
14986 | else if (attr_form_is_block (attr)) | |
14987 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14988 | else | |
14989 | dwarf2_complex_location_expr_complaint (); | |
14990 | ||
14991 | return 1; | |
14992 | } | |
14993 | ||
14994 | return 0; | |
14995 | } | |
14996 | ||
c906108c SS |
14997 | /* Add an aggregate field to the field list. */ |
14998 | ||
14999 | static void | |
107d2387 | 15000 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15001 | struct dwarf2_cu *cu) |
6e70227d | 15002 | { |
518817b3 | 15003 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15004 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15005 | struct nextfield *new_field; |
15006 | struct attribute *attr; | |
15007 | struct field *fp; | |
15d034d0 | 15008 | const char *fieldname = ""; |
c906108c | 15009 | |
7d0ccb61 DJ |
15010 | if (die->tag == DW_TAG_inheritance) |
15011 | { | |
be2daae6 TT |
15012 | fip->baseclasses.emplace_back (); |
15013 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15014 | } |
15015 | else | |
15016 | { | |
be2daae6 TT |
15017 | fip->fields.emplace_back (); |
15018 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15019 | } |
be2daae6 | 15020 | |
c906108c SS |
15021 | fip->nfields++; |
15022 | ||
e142c38c | 15023 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15024 | if (attr) |
15025 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15026 | else |
15027 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15028 | if (new_field->accessibility != DW_ACCESS_public) |
15029 | fip->non_public_fields = 1; | |
60d5a603 | 15030 | |
e142c38c | 15031 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15032 | if (attr) |
15033 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15034 | else |
15035 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15036 | |
15037 | fp = &new_field->field; | |
a9a9bd0f | 15038 | |
e142c38c | 15039 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15040 | { |
74ac6d43 TT |
15041 | LONGEST offset; |
15042 | ||
a9a9bd0f | 15043 | /* Data member other than a C++ static data member. */ |
6e70227d | 15044 | |
c906108c | 15045 | /* Get type of field. */ |
e7c27a73 | 15046 | fp->type = die_type (die, cu); |
c906108c | 15047 | |
d6a843b5 | 15048 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15049 | |
c906108c | 15050 | /* Get bit size of field (zero if none). */ |
e142c38c | 15051 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15052 | if (attr) |
15053 | { | |
15054 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15055 | } | |
15056 | else | |
15057 | { | |
15058 | FIELD_BITSIZE (*fp) = 0; | |
15059 | } | |
15060 | ||
15061 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15062 | if (handle_data_member_location (die, cu, &offset)) |
15063 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15064 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15065 | if (attr) |
15066 | { | |
5e2b427d | 15067 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15068 | { |
15069 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15070 | additional bit offset from the MSB of the containing |
15071 | anonymous object to the MSB of the field. We don't | |
15072 | have to do anything special since we don't need to | |
15073 | know the size of the anonymous object. */ | |
f41f5e61 | 15074 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15075 | } |
15076 | else | |
15077 | { | |
15078 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15079 | MSB of the anonymous object, subtract off the number of |
15080 | bits from the MSB of the field to the MSB of the | |
15081 | object, and then subtract off the number of bits of | |
15082 | the field itself. The result is the bit offset of | |
15083 | the LSB of the field. */ | |
c906108c SS |
15084 | int anonymous_size; |
15085 | int bit_offset = DW_UNSND (attr); | |
15086 | ||
e142c38c | 15087 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15088 | if (attr) |
15089 | { | |
15090 | /* The size of the anonymous object containing | |
15091 | the bit field is explicit, so use the | |
15092 | indicated size (in bytes). */ | |
15093 | anonymous_size = DW_UNSND (attr); | |
15094 | } | |
15095 | else | |
15096 | { | |
15097 | /* The size of the anonymous object containing | |
15098 | the bit field must be inferred from the type | |
15099 | attribute of the data member containing the | |
15100 | bit field. */ | |
15101 | anonymous_size = TYPE_LENGTH (fp->type); | |
15102 | } | |
f41f5e61 PA |
15103 | SET_FIELD_BITPOS (*fp, |
15104 | (FIELD_BITPOS (*fp) | |
15105 | + anonymous_size * bits_per_byte | |
15106 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15107 | } |
15108 | } | |
da5b30da AA |
15109 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15110 | if (attr != NULL) | |
15111 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15112 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15113 | |
15114 | /* Get name of field. */ | |
39cbfefa DJ |
15115 | fieldname = dwarf2_name (die, cu); |
15116 | if (fieldname == NULL) | |
15117 | fieldname = ""; | |
d8151005 DJ |
15118 | |
15119 | /* The name is already allocated along with this objfile, so we don't | |
15120 | need to duplicate it for the type. */ | |
15121 | fp->name = fieldname; | |
c906108c SS |
15122 | |
15123 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15124 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15125 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15126 | { |
d48cc9dd | 15127 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15128 | new_field->accessibility = DW_ACCESS_private; |
15129 | fip->non_public_fields = 1; | |
15130 | } | |
15131 | } | |
a9a9bd0f | 15132 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15133 | { |
a9a9bd0f DC |
15134 | /* C++ static member. */ |
15135 | ||
15136 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15137 | is a declaration, but all versions of G++ as of this writing | |
15138 | (so through at least 3.2.1) incorrectly generate | |
15139 | DW_TAG_variable tags. */ | |
6e70227d | 15140 | |
ff355380 | 15141 | const char *physname; |
c906108c | 15142 | |
a9a9bd0f | 15143 | /* Get name of field. */ |
39cbfefa DJ |
15144 | fieldname = dwarf2_name (die, cu); |
15145 | if (fieldname == NULL) | |
c906108c SS |
15146 | return; |
15147 | ||
254e6b9e | 15148 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15149 | if (attr |
15150 | /* Only create a symbol if this is an external value. | |
15151 | new_symbol checks this and puts the value in the global symbol | |
15152 | table, which we want. If it is not external, new_symbol | |
15153 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15154 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15155 | { |
15156 | /* A static const member, not much different than an enum as far as | |
15157 | we're concerned, except that we can support more types. */ | |
15158 | new_symbol (die, NULL, cu); | |
15159 | } | |
15160 | ||
2df3850c | 15161 | /* Get physical name. */ |
ff355380 | 15162 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15163 | |
d8151005 DJ |
15164 | /* The name is already allocated along with this objfile, so we don't |
15165 | need to duplicate it for the type. */ | |
15166 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15167 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15168 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15169 | } |
15170 | else if (die->tag == DW_TAG_inheritance) | |
15171 | { | |
74ac6d43 | 15172 | LONGEST offset; |
d4b96c9a | 15173 | |
74ac6d43 TT |
15174 | /* C++ base class field. */ |
15175 | if (handle_data_member_location (die, cu, &offset)) | |
15176 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15177 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15178 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15179 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15180 | } |
2ddeaf8a TT |
15181 | else if (die->tag == DW_TAG_variant_part) |
15182 | { | |
15183 | /* process_structure_scope will treat this DIE as a union. */ | |
15184 | process_structure_scope (die, cu); | |
15185 | ||
15186 | /* The variant part is relative to the start of the enclosing | |
15187 | structure. */ | |
15188 | SET_FIELD_BITPOS (*fp, 0); | |
15189 | fp->type = get_die_type (die, cu); | |
15190 | fp->artificial = 1; | |
15191 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15192 | |
15193 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15194 | representation requires one, so set it to the maximum of the | |
15195 | child sizes. */ | |
15196 | if (TYPE_LENGTH (fp->type) == 0) | |
15197 | { | |
15198 | unsigned max = 0; | |
15199 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
15200 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)) > max) | |
15201 | max = TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)); | |
15202 | TYPE_LENGTH (fp->type) = max; | |
15203 | } | |
2ddeaf8a TT |
15204 | } |
15205 | else | |
15206 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15207 | } |
15208 | ||
883fd55a KS |
15209 | /* Can the type given by DIE define another type? */ |
15210 | ||
15211 | static bool | |
15212 | type_can_define_types (const struct die_info *die) | |
15213 | { | |
15214 | switch (die->tag) | |
15215 | { | |
15216 | case DW_TAG_typedef: | |
15217 | case DW_TAG_class_type: | |
15218 | case DW_TAG_structure_type: | |
15219 | case DW_TAG_union_type: | |
15220 | case DW_TAG_enumeration_type: | |
15221 | return true; | |
15222 | ||
15223 | default: | |
15224 | return false; | |
15225 | } | |
15226 | } | |
15227 | ||
15228 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15229 | |
15230 | static void | |
883fd55a KS |
15231 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15232 | struct dwarf2_cu *cu) | |
6e70227d | 15233 | { |
be2daae6 TT |
15234 | struct decl_field fp; |
15235 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15236 | |
883fd55a | 15237 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15238 | |
883fd55a | 15239 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15240 | fp.name = dwarf2_name (die, cu); |
15241 | fp.type = read_type_die (die, cu); | |
98751a41 | 15242 | |
c191a687 KS |
15243 | /* Save accessibility. */ |
15244 | enum dwarf_access_attribute accessibility; | |
15245 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15246 | if (attr != NULL) | |
15247 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15248 | else | |
15249 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15250 | switch (accessibility) | |
15251 | { | |
15252 | case DW_ACCESS_public: | |
15253 | /* The assumed value if neither private nor protected. */ | |
15254 | break; | |
15255 | case DW_ACCESS_private: | |
be2daae6 | 15256 | fp.is_private = 1; |
c191a687 KS |
15257 | break; |
15258 | case DW_ACCESS_protected: | |
be2daae6 | 15259 | fp.is_protected = 1; |
c191a687 KS |
15260 | break; |
15261 | default: | |
b98664d3 | 15262 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15263 | } |
15264 | ||
883fd55a | 15265 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15266 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15267 | else |
be2daae6 | 15268 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15269 | } |
15270 | ||
c906108c SS |
15271 | /* Create the vector of fields, and attach it to the type. */ |
15272 | ||
15273 | static void | |
fba45db2 | 15274 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15275 | struct dwarf2_cu *cu) |
c906108c SS |
15276 | { |
15277 | int nfields = fip->nfields; | |
15278 | ||
15279 | /* Record the field count, allocate space for the array of fields, | |
15280 | and create blank accessibility bitfields if necessary. */ | |
15281 | TYPE_NFIELDS (type) = nfields; | |
15282 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15283 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15284 | |
b4ba55a1 | 15285 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15286 | { |
15287 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15288 | ||
15289 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15290 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15291 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15292 | ||
15293 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15294 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15295 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15296 | ||
774b6a14 TT |
15297 | TYPE_FIELD_IGNORE_BITS (type) = |
15298 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15299 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15300 | } |
15301 | ||
15302 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15303 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15304 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15305 | { |
be2daae6 | 15306 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15307 | unsigned char *pointer; |
c906108c SS |
15308 | |
15309 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15310 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15311 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15312 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15313 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15314 | } |
15315 | ||
2ddeaf8a TT |
15316 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15317 | { | |
15318 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15319 | ||
be2daae6 | 15320 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15321 | { |
be2daae6 TT |
15322 | struct nextfield &field = fip->fields[index]; |
15323 | ||
15324 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15325 | di->discriminant_index = index; |
be2daae6 | 15326 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15327 | di->default_index = index; |
15328 | else | |
be2daae6 | 15329 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15330 | } |
15331 | } | |
15332 | ||
be2daae6 TT |
15333 | /* Copy the saved-up fields into the field vector. */ |
15334 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15335 | { |
be2daae6 TT |
15336 | struct nextfield &field |
15337 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15338 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15339 | |
be2daae6 TT |
15340 | TYPE_FIELD (type, i) = field.field; |
15341 | switch (field.accessibility) | |
c906108c | 15342 | { |
c5aa993b | 15343 | case DW_ACCESS_private: |
b4ba55a1 | 15344 | if (cu->language != language_ada) |
be2daae6 | 15345 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15346 | break; |
c906108c | 15347 | |
c5aa993b | 15348 | case DW_ACCESS_protected: |
b4ba55a1 | 15349 | if (cu->language != language_ada) |
be2daae6 | 15350 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15351 | break; |
c906108c | 15352 | |
c5aa993b JM |
15353 | case DW_ACCESS_public: |
15354 | break; | |
c906108c | 15355 | |
c5aa993b JM |
15356 | default: |
15357 | /* Unknown accessibility. Complain and treat it as public. */ | |
15358 | { | |
b98664d3 | 15359 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15360 | field.accessibility); |
c5aa993b JM |
15361 | } |
15362 | break; | |
c906108c | 15363 | } |
be2daae6 | 15364 | if (i < fip->baseclasses.size ()) |
c906108c | 15365 | { |
be2daae6 | 15366 | switch (field.virtuality) |
c906108c | 15367 | { |
c5aa993b JM |
15368 | case DW_VIRTUALITY_virtual: |
15369 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15370 | if (cu->language == language_ada) |
a73c6dcd | 15371 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15372 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15373 | break; |
c906108c SS |
15374 | } |
15375 | } | |
c906108c SS |
15376 | } |
15377 | } | |
15378 | ||
7d27a96d TT |
15379 | /* Return true if this member function is a constructor, false |
15380 | otherwise. */ | |
15381 | ||
15382 | static int | |
15383 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15384 | { | |
15385 | const char *fieldname; | |
fe978cb0 | 15386 | const char *type_name; |
7d27a96d TT |
15387 | int len; |
15388 | ||
15389 | if (die->parent == NULL) | |
15390 | return 0; | |
15391 | ||
15392 | if (die->parent->tag != DW_TAG_structure_type | |
15393 | && die->parent->tag != DW_TAG_union_type | |
15394 | && die->parent->tag != DW_TAG_class_type) | |
15395 | return 0; | |
15396 | ||
15397 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15398 | type_name = dwarf2_name (die->parent, cu); |
15399 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15400 | return 0; |
15401 | ||
15402 | len = strlen (fieldname); | |
fe978cb0 PA |
15403 | return (strncmp (fieldname, type_name, len) == 0 |
15404 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15405 | } |
15406 | ||
c906108c SS |
15407 | /* Add a member function to the proper fieldlist. */ |
15408 | ||
15409 | static void | |
107d2387 | 15410 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15411 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15412 | { |
518817b3 | 15413 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15414 | struct attribute *attr; |
c906108c | 15415 | int i; |
be2daae6 | 15416 | struct fnfieldlist *flp = nullptr; |
c906108c | 15417 | struct fn_field *fnp; |
15d034d0 | 15418 | const char *fieldname; |
f792889a | 15419 | struct type *this_type; |
60d5a603 | 15420 | enum dwarf_access_attribute accessibility; |
c906108c | 15421 | |
b4ba55a1 | 15422 | if (cu->language == language_ada) |
a73c6dcd | 15423 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15424 | |
2df3850c | 15425 | /* Get name of member function. */ |
39cbfefa DJ |
15426 | fieldname = dwarf2_name (die, cu); |
15427 | if (fieldname == NULL) | |
2df3850c | 15428 | return; |
c906108c | 15429 | |
c906108c | 15430 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15431 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15432 | { |
27bfe10e | 15433 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15434 | { |
15435 | flp = &fip->fnfieldlists[i]; | |
15436 | break; | |
15437 | } | |
c906108c SS |
15438 | } |
15439 | ||
be2daae6 TT |
15440 | /* Create a new fnfieldlist if necessary. */ |
15441 | if (flp == nullptr) | |
c906108c | 15442 | { |
be2daae6 TT |
15443 | fip->fnfieldlists.emplace_back (); |
15444 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15445 | flp->name = fieldname; |
be2daae6 | 15446 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15447 | } |
15448 | ||
be2daae6 TT |
15449 | /* Create a new member function field and add it to the vector of |
15450 | fnfieldlists. */ | |
15451 | flp->fnfields.emplace_back (); | |
15452 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15453 | |
15454 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15455 | if (cu->language == language_cplus) |
be2daae6 TT |
15456 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15457 | die, cu); | |
3da10d80 KS |
15458 | else |
15459 | { | |
1d06ead6 | 15460 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15461 | fnp->physname = physname ? physname : ""; |
15462 | } | |
15463 | ||
c906108c | 15464 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15465 | this_type = read_type_die (die, cu); |
15466 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15467 | { |
f792889a | 15468 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15469 | |
f792889a | 15470 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15471 | of the method itself (TYPE_CODE_METHOD). */ |
15472 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15473 | TYPE_TARGET_TYPE (this_type), |
15474 | TYPE_FIELDS (this_type), | |
15475 | TYPE_NFIELDS (this_type), | |
15476 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15477 | |
15478 | /* Handle static member functions. | |
c5aa993b | 15479 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15480 | member functions. G++ helps GDB by marking the first |
15481 | parameter for non-static member functions (which is the this | |
15482 | pointer) as artificial. We obtain this information from | |
15483 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15484 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15485 | fnp->voffset = VOFFSET_STATIC; |
15486 | } | |
15487 | else | |
b98664d3 | 15488 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15489 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15490 | |
15491 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15492 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15493 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15494 | |
3e43a32a MS |
15495 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15496 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15497 | |
15498 | /* Get accessibility. */ | |
e142c38c | 15499 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15500 | if (attr) |
aead7601 | 15501 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15502 | else |
15503 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15504 | switch (accessibility) | |
c906108c | 15505 | { |
60d5a603 JK |
15506 | case DW_ACCESS_private: |
15507 | fnp->is_private = 1; | |
15508 | break; | |
15509 | case DW_ACCESS_protected: | |
15510 | fnp->is_protected = 1; | |
15511 | break; | |
c906108c SS |
15512 | } |
15513 | ||
b02dede2 | 15514 | /* Check for artificial methods. */ |
e142c38c | 15515 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15516 | if (attr && DW_UNSND (attr) != 0) |
15517 | fnp->is_artificial = 1; | |
15518 | ||
7d27a96d TT |
15519 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15520 | ||
0d564a31 | 15521 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15522 | function. For older versions of GCC, this is an offset in the |
15523 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15524 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15525 | to the object address. */ |
15526 | ||
e142c38c | 15527 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15528 | if (attr) |
8e19ed76 | 15529 | { |
aec5aa8b | 15530 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15531 | { |
aec5aa8b TT |
15532 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15533 | { | |
15534 | /* Old-style GCC. */ | |
15535 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15536 | } | |
15537 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15538 | || (DW_BLOCK (attr)->size > 1 | |
15539 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15540 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15541 | { | |
aec5aa8b TT |
15542 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15543 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15544 | dwarf2_complex_location_expr_complaint (); | |
15545 | else | |
15546 | fnp->voffset /= cu->header.addr_size; | |
15547 | fnp->voffset += 2; | |
15548 | } | |
15549 | else | |
15550 | dwarf2_complex_location_expr_complaint (); | |
15551 | ||
15552 | if (!fnp->fcontext) | |
7e993ebf KS |
15553 | { |
15554 | /* If there is no `this' field and no DW_AT_containing_type, | |
15555 | we cannot actually find a base class context for the | |
15556 | vtable! */ | |
15557 | if (TYPE_NFIELDS (this_type) == 0 | |
15558 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15559 | { | |
b98664d3 | 15560 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15561 | "function \"%s\" (offset %s)"), |
15562 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15563 | } |
15564 | else | |
15565 | { | |
15566 | fnp->fcontext | |
15567 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15568 | } | |
15569 | } | |
aec5aa8b | 15570 | } |
3690dd37 | 15571 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15572 | { |
4d3c2250 | 15573 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15574 | } |
15575 | else | |
15576 | { | |
4d3c2250 KB |
15577 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15578 | fieldname); | |
8e19ed76 | 15579 | } |
0d564a31 | 15580 | } |
d48cc9dd DJ |
15581 | else |
15582 | { | |
15583 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15584 | if (attr && DW_UNSND (attr)) | |
15585 | { | |
15586 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15587 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15588 | "but the vtable offset is not specified"), |
9d8780f0 | 15589 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15590 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15591 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15592 | } | |
15593 | } | |
c906108c SS |
15594 | } |
15595 | ||
15596 | /* Create the vector of member function fields, and attach it to the type. */ | |
15597 | ||
15598 | static void | |
fba45db2 | 15599 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15600 | struct dwarf2_cu *cu) |
c906108c | 15601 | { |
b4ba55a1 | 15602 | if (cu->language == language_ada) |
a73c6dcd | 15603 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15604 | |
c906108c SS |
15605 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15606 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15607 | TYPE_ALLOC (type, |
15608 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15609 | |
be2daae6 | 15610 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15611 | { |
be2daae6 | 15612 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15613 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15614 | |
be2daae6 TT |
15615 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15616 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15617 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15618 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15619 | ||
15620 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15621 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15622 | } |
15623 | ||
be2daae6 | 15624 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15625 | } |
15626 | ||
1168df01 JB |
15627 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15628 | language, zero otherwise. */ | |
15629 | static int | |
15630 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15631 | { | |
15632 | static const char vptr[] = "_vptr"; | |
15633 | ||
9c37b5ae TT |
15634 | /* Look for the C++ form of the vtable. */ |
15635 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15636 | return 1; |
15637 | ||
15638 | return 0; | |
15639 | } | |
15640 | ||
c0dd20ea | 15641 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15642 | functions, with the ABI-specified layout. If TYPE describes |
15643 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15644 | |
15645 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15646 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15647 | |
0b92b5bb TT |
15648 | static void |
15649 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15650 | { |
09e2d7c7 | 15651 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15652 | |
15653 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15654 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15655 | return; | |
c0dd20ea DJ |
15656 | |
15657 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15658 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15659 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15660 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15661 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15662 | return; | |
c0dd20ea DJ |
15663 | |
15664 | /* Find the type of the method. */ | |
0b92b5bb | 15665 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15666 | if (pfn_type == NULL |
15667 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15668 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15669 | return; |
c0dd20ea DJ |
15670 | |
15671 | /* Look for the "this" argument. */ | |
15672 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15673 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15674 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15675 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15676 | return; |
c0dd20ea | 15677 | |
09e2d7c7 | 15678 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15679 | new_type = alloc_type (objfile); |
09e2d7c7 | 15680 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15681 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15682 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15683 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15684 | } |
1168df01 | 15685 | |
2b4424c3 TT |
15686 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15687 | appropriate error checking and issuing complaints if there is a | |
15688 | problem. */ | |
15689 | ||
15690 | static ULONGEST | |
15691 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15692 | { | |
15693 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15694 | ||
15695 | if (attr == nullptr) | |
15696 | return 0; | |
15697 | ||
15698 | if (!attr_form_is_constant (attr)) | |
15699 | { | |
b98664d3 | 15700 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15701 | " - DIE at %s [in module %s]"), |
15702 | sect_offset_str (die->sect_off), | |
15703 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15704 | return 0; | |
15705 | } | |
15706 | ||
15707 | ULONGEST align; | |
15708 | if (attr->form == DW_FORM_sdata) | |
15709 | { | |
15710 | LONGEST val = DW_SND (attr); | |
15711 | if (val < 0) | |
15712 | { | |
b98664d3 | 15713 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15714 | " - DIE at %s [in module %s]"), |
15715 | sect_offset_str (die->sect_off), | |
15716 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15717 | return 0; | |
15718 | } | |
15719 | align = val; | |
15720 | } | |
15721 | else | |
15722 | align = DW_UNSND (attr); | |
15723 | ||
15724 | if (align == 0) | |
15725 | { | |
b98664d3 | 15726 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15727 | " - DIE at %s [in module %s]"), |
15728 | sect_offset_str (die->sect_off), | |
15729 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15730 | return 0; | |
15731 | } | |
15732 | if ((align & (align - 1)) != 0) | |
15733 | { | |
b98664d3 | 15734 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15735 | " - DIE at %s [in module %s]"), |
15736 | sect_offset_str (die->sect_off), | |
15737 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15738 | return 0; | |
15739 | } | |
15740 | ||
15741 | return align; | |
15742 | } | |
15743 | ||
15744 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15745 | the alignment for TYPE. */ | |
15746 | ||
15747 | static void | |
15748 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15749 | struct type *type) | |
15750 | { | |
15751 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15752 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15753 | " - DIE at %s [in module %s]"), |
15754 | sect_offset_str (die->sect_off), | |
15755 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15756 | } | |
685b1105 | 15757 | |
c906108c | 15758 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15759 | (definition) to create a type for the structure or union. Fill in |
15760 | the type's name and general properties; the members will not be | |
83655187 DE |
15761 | processed until process_structure_scope. A symbol table entry for |
15762 | the type will also not be done until process_structure_scope (assuming | |
15763 | the type has a name). | |
c906108c | 15764 | |
c767944b DJ |
15765 | NOTE: we need to call these functions regardless of whether or not the |
15766 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15767 | structure or union. This gets the type entered into our set of |
83655187 | 15768 | user defined types. */ |
c906108c | 15769 | |
f792889a | 15770 | static struct type * |
134d01f1 | 15771 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15772 | { |
518817b3 | 15773 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15774 | struct type *type; |
15775 | struct attribute *attr; | |
15d034d0 | 15776 | const char *name; |
c906108c | 15777 | |
348e048f DE |
15778 | /* If the definition of this type lives in .debug_types, read that type. |
15779 | Don't follow DW_AT_specification though, that will take us back up | |
15780 | the chain and we want to go down. */ | |
45e58e77 | 15781 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15782 | if (attr) |
15783 | { | |
ac9ec31b | 15784 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15785 | |
ac9ec31b | 15786 | /* The type's CU may not be the same as CU. |
02142a6c | 15787 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15788 | return set_die_type (die, type, cu); |
15789 | } | |
15790 | ||
c0dd20ea | 15791 | type = alloc_type (objfile); |
c906108c | 15792 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15793 | |
39cbfefa DJ |
15794 | name = dwarf2_name (die, cu); |
15795 | if (name != NULL) | |
c906108c | 15796 | { |
987504bb | 15797 | if (cu->language == language_cplus |
c44af4eb TT |
15798 | || cu->language == language_d |
15799 | || cu->language == language_rust) | |
63d06c5c | 15800 | { |
15d034d0 | 15801 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15802 | |
15803 | /* dwarf2_full_name might have already finished building the DIE's | |
15804 | type. If so, there is no need to continue. */ | |
15805 | if (get_die_type (die, cu) != NULL) | |
15806 | return get_die_type (die, cu); | |
15807 | ||
e86ca25f | 15808 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15809 | } |
15810 | else | |
15811 | { | |
d8151005 DJ |
15812 | /* The name is already allocated along with this objfile, so |
15813 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15814 | TYPE_NAME (type) = name; |
63d06c5c | 15815 | } |
c906108c SS |
15816 | } |
15817 | ||
15818 | if (die->tag == DW_TAG_structure_type) | |
15819 | { | |
15820 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15821 | } | |
15822 | else if (die->tag == DW_TAG_union_type) | |
15823 | { | |
15824 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15825 | } | |
2ddeaf8a TT |
15826 | else if (die->tag == DW_TAG_variant_part) |
15827 | { | |
15828 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15829 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15830 | } | |
c906108c SS |
15831 | else |
15832 | { | |
4753d33b | 15833 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15834 | } |
15835 | ||
0cc2414c TT |
15836 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15837 | TYPE_DECLARED_CLASS (type) = 1; | |
15838 | ||
e142c38c | 15839 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15840 | if (attr) |
15841 | { | |
155bfbd3 JB |
15842 | if (attr_form_is_constant (attr)) |
15843 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15844 | else | |
15845 | { | |
15846 | /* For the moment, dynamic type sizes are not supported | |
15847 | by GDB's struct type. The actual size is determined | |
15848 | on-demand when resolving the type of a given object, | |
15849 | so set the type's length to zero for now. Otherwise, | |
15850 | we record an expression as the length, and that expression | |
15851 | could lead to a very large value, which could eventually | |
15852 | lead to us trying to allocate that much memory when creating | |
15853 | a value of that type. */ | |
15854 | TYPE_LENGTH (type) = 0; | |
15855 | } | |
c906108c SS |
15856 | } |
15857 | else | |
15858 | { | |
15859 | TYPE_LENGTH (type) = 0; | |
15860 | } | |
15861 | ||
2b4424c3 TT |
15862 | maybe_set_alignment (cu, die, type); |
15863 | ||
5230b05a | 15864 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15865 | { |
5230b05a WT |
15866 | /* ICC<14 does not output the required DW_AT_declaration on |
15867 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15868 | TYPE_STUB (type) = 1; |
685b1105 JK |
15869 | } |
15870 | else | |
15871 | TYPE_STUB_SUPPORTED (type) = 1; | |
15872 | ||
dc718098 | 15873 | if (die_is_declaration (die, cu)) |
876cecd0 | 15874 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15875 | else if (attr == NULL && die->child == NULL |
15876 | && producer_is_realview (cu->producer)) | |
15877 | /* RealView does not output the required DW_AT_declaration | |
15878 | on incomplete types. */ | |
15879 | TYPE_STUB (type) = 1; | |
dc718098 | 15880 | |
c906108c SS |
15881 | /* We need to add the type field to the die immediately so we don't |
15882 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15883 | type within the structure itself. */ |
1c379e20 | 15884 | set_die_type (die, type, cu); |
c906108c | 15885 | |
7e314c57 JK |
15886 | /* set_die_type should be already done. */ |
15887 | set_descriptive_type (type, die, cu); | |
15888 | ||
c767944b DJ |
15889 | return type; |
15890 | } | |
15891 | ||
2ddeaf8a TT |
15892 | /* A helper for process_structure_scope that handles a single member |
15893 | DIE. */ | |
15894 | ||
15895 | static void | |
15896 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15897 | struct field_info *fi, | |
15898 | std::vector<struct symbol *> *template_args, | |
15899 | struct dwarf2_cu *cu) | |
15900 | { | |
15901 | if (child_die->tag == DW_TAG_member | |
15902 | || child_die->tag == DW_TAG_variable | |
15903 | || child_die->tag == DW_TAG_variant_part) | |
15904 | { | |
15905 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15906 | should be a DW_TAG_member that is a declaration, but | |
15907 | all versions of G++ as of this writing (so through at | |
15908 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15909 | tags for them instead. */ | |
15910 | dwarf2_add_field (fi, child_die, cu); | |
15911 | } | |
15912 | else if (child_die->tag == DW_TAG_subprogram) | |
15913 | { | |
15914 | /* Rust doesn't have member functions in the C++ sense. | |
15915 | However, it does emit ordinary functions as children | |
15916 | of a struct DIE. */ | |
15917 | if (cu->language == language_rust) | |
15918 | read_func_scope (child_die, cu); | |
15919 | else | |
15920 | { | |
15921 | /* C++ member function. */ | |
15922 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15923 | } | |
15924 | } | |
15925 | else if (child_die->tag == DW_TAG_inheritance) | |
15926 | { | |
15927 | /* C++ base class field. */ | |
15928 | dwarf2_add_field (fi, child_die, cu); | |
15929 | } | |
15930 | else if (type_can_define_types (child_die)) | |
15931 | dwarf2_add_type_defn (fi, child_die, cu); | |
15932 | else if (child_die->tag == DW_TAG_template_type_param | |
15933 | || child_die->tag == DW_TAG_template_value_param) | |
15934 | { | |
15935 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15936 | ||
15937 | if (arg != NULL) | |
15938 | template_args->push_back (arg); | |
15939 | } | |
15940 | else if (child_die->tag == DW_TAG_variant) | |
15941 | { | |
15942 | /* In a variant we want to get the discriminant and also add a | |
15943 | field for our sole member child. */ | |
15944 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15945 | ||
bde09ab7 | 15946 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
15947 | variant_child != NULL; |
15948 | variant_child = sibling_die (variant_child)) | |
15949 | { | |
15950 | if (variant_child->tag == DW_TAG_member) | |
15951 | { | |
15952 | handle_struct_member_die (variant_child, type, fi, | |
15953 | template_args, cu); | |
15954 | /* Only handle the one. */ | |
15955 | break; | |
15956 | } | |
15957 | } | |
15958 | ||
15959 | /* We don't handle this but we might as well report it if we see | |
15960 | it. */ | |
15961 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15962 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15963 | " - DIE at %s [in module %s]"), |
15964 | sect_offset_str (child_die->sect_off), | |
15965 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15966 | ||
15967 | /* The first field was just added, so we can stash the | |
15968 | discriminant there. */ | |
be2daae6 | 15969 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15970 | if (discr == NULL) |
be2daae6 | 15971 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15972 | else |
be2daae6 | 15973 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15974 | } |
15975 | } | |
15976 | ||
c767944b DJ |
15977 | /* Finish creating a structure or union type, including filling in |
15978 | its members and creating a symbol for it. */ | |
15979 | ||
15980 | static void | |
15981 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15982 | { | |
518817b3 | 15983 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15984 | struct die_info *child_die; |
c767944b DJ |
15985 | struct type *type; |
15986 | ||
15987 | type = get_die_type (die, cu); | |
15988 | if (type == NULL) | |
15989 | type = read_structure_type (die, cu); | |
15990 | ||
2ddeaf8a TT |
15991 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15992 | read the discriminant member, so we can record it later in the | |
15993 | discriminant_info. */ | |
15994 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
15995 | sect_offset discr_offset; | |
3e1d3d8c | 15996 | bool has_template_parameters = false; |
2ddeaf8a TT |
15997 | |
15998 | if (is_variant_part) | |
15999 | { | |
16000 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16001 | if (discr == NULL) | |
16002 | { | |
16003 | /* Maybe it's a univariant form, an extension we support. | |
16004 | In this case arrange not to check the offset. */ | |
16005 | is_variant_part = false; | |
16006 | } | |
16007 | else if (attr_form_is_ref (discr)) | |
16008 | { | |
16009 | struct dwarf2_cu *target_cu = cu; | |
16010 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16011 | ||
16012 | discr_offset = target_die->sect_off; | |
16013 | } | |
16014 | else | |
16015 | { | |
b98664d3 | 16016 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16017 | " - DIE at %s [in module %s]"), |
16018 | sect_offset_str (die->sect_off), | |
16019 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16020 | is_variant_part = false; | |
16021 | } | |
16022 | } | |
16023 | ||
e142c38c | 16024 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16025 | { |
16026 | struct field_info fi; | |
2f4732b0 | 16027 | std::vector<struct symbol *> template_args; |
c906108c | 16028 | |
639d11d3 | 16029 | child_die = die->child; |
c906108c SS |
16030 | |
16031 | while (child_die && child_die->tag) | |
16032 | { | |
2ddeaf8a | 16033 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16034 | |
2ddeaf8a | 16035 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16036 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16037 | |
c906108c SS |
16038 | child_die = sibling_die (child_die); |
16039 | } | |
16040 | ||
34eaf542 | 16041 | /* Attach template arguments to type. */ |
2f4732b0 | 16042 | if (!template_args.empty ()) |
34eaf542 | 16043 | { |
3e1d3d8c | 16044 | has_template_parameters = true; |
34eaf542 | 16045 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16046 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16047 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16048 | = XOBNEWVEC (&objfile->objfile_obstack, |
16049 | struct symbol *, | |
16050 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16051 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16052 | template_args.data (), |
34eaf542 TT |
16053 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16054 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16055 | } |
16056 | ||
c906108c SS |
16057 | /* Attach fields and member functions to the type. */ |
16058 | if (fi.nfields) | |
e7c27a73 | 16059 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16060 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16061 | { |
e7c27a73 | 16062 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16063 | |
c5aa993b | 16064 | /* Get the type which refers to the base class (possibly this |
c906108c | 16065 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16066 | class from the DW_AT_containing_type attribute. This use of |
16067 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16068 | |
e142c38c | 16069 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16070 | { |
e7c27a73 | 16071 | struct type *t = die_containing_type (die, cu); |
c906108c | 16072 | |
ae6ae975 | 16073 | set_type_vptr_basetype (type, t); |
c906108c SS |
16074 | if (type == t) |
16075 | { | |
c906108c SS |
16076 | int i; |
16077 | ||
16078 | /* Our own class provides vtbl ptr. */ | |
16079 | for (i = TYPE_NFIELDS (t) - 1; | |
16080 | i >= TYPE_N_BASECLASSES (t); | |
16081 | --i) | |
16082 | { | |
0d5cff50 | 16083 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16084 | |
1168df01 | 16085 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16086 | { |
ae6ae975 | 16087 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16088 | break; |
16089 | } | |
16090 | } | |
16091 | ||
16092 | /* Complain if virtual function table field not found. */ | |
16093 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16094 | complaint (_("virtual function table pointer " |
3e43a32a | 16095 | "not found when defining class '%s'"), |
e86ca25f | 16096 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16097 | } |
16098 | else | |
16099 | { | |
ae6ae975 | 16100 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16101 | } |
16102 | } | |
f6235d4c | 16103 | else if (cu->producer |
61012eef | 16104 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16105 | { |
16106 | /* The IBM XLC compiler does not provide direct indication | |
16107 | of the containing type, but the vtable pointer is | |
16108 | always named __vfp. */ | |
16109 | ||
16110 | int i; | |
16111 | ||
16112 | for (i = TYPE_NFIELDS (type) - 1; | |
16113 | i >= TYPE_N_BASECLASSES (type); | |
16114 | --i) | |
16115 | { | |
16116 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16117 | { | |
ae6ae975 DE |
16118 | set_type_vptr_fieldno (type, i); |
16119 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16120 | break; |
16121 | } | |
16122 | } | |
16123 | } | |
c906108c | 16124 | } |
98751a41 JK |
16125 | |
16126 | /* Copy fi.typedef_field_list linked list elements content into the | |
16127 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16128 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16129 | { |
be2daae6 | 16130 | int count = fi.typedef_field_list.size (); |
98751a41 | 16131 | |
a0d7a4ff | 16132 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16133 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16134 | = ((struct decl_field *) |
be2daae6 TT |
16135 | TYPE_ALLOC (type, |
16136 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16137 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16138 | |
be2daae6 TT |
16139 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16140 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16141 | } |
c767944b | 16142 | |
883fd55a KS |
16143 | /* Copy fi.nested_types_list linked list elements content into the |
16144 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16145 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16146 | { |
be2daae6 | 16147 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16148 | |
16149 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16150 | TYPE_NESTED_TYPES_ARRAY (type) | |
16151 | = ((struct decl_field *) | |
be2daae6 TT |
16152 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16153 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16154 | |
be2daae6 TT |
16155 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16156 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16157 | } |
c906108c | 16158 | } |
63d06c5c | 16159 | |
bb5ed363 | 16160 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16161 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16162 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16163 | |
90aeadfc DC |
16164 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16165 | snapshots) has been known to create a die giving a declaration | |
16166 | for a class that has, as a child, a die giving a definition for a | |
16167 | nested class. So we have to process our children even if the | |
16168 | current die is a declaration. Normally, of course, a declaration | |
16169 | won't have any children at all. */ | |
134d01f1 | 16170 | |
ca040673 DE |
16171 | child_die = die->child; |
16172 | ||
90aeadfc DC |
16173 | while (child_die != NULL && child_die->tag) |
16174 | { | |
16175 | if (child_die->tag == DW_TAG_member | |
16176 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16177 | || child_die->tag == DW_TAG_inheritance |
16178 | || child_die->tag == DW_TAG_template_value_param | |
16179 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16180 | { |
90aeadfc | 16181 | /* Do nothing. */ |
134d01f1 | 16182 | } |
90aeadfc DC |
16183 | else |
16184 | process_die (child_die, cu); | |
134d01f1 | 16185 | |
90aeadfc | 16186 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16187 | } |
16188 | ||
fa4028e9 JB |
16189 | /* Do not consider external references. According to the DWARF standard, |
16190 | these DIEs are identified by the fact that they have no byte_size | |
16191 | attribute, and a declaration attribute. */ | |
16192 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16193 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16194 | { |
16195 | struct symbol *sym = new_symbol (die, type, cu); | |
16196 | ||
16197 | if (has_template_parameters) | |
16198 | { | |
a776957c TT |
16199 | struct symtab *symtab; |
16200 | if (sym != nullptr) | |
16201 | symtab = symbol_symtab (sym); | |
16202 | else if (cu->line_header != nullptr) | |
16203 | { | |
16204 | /* Any related symtab will do. */ | |
16205 | symtab | |
16206 | = cu->line_header->file_name_at (file_name_index (1))->symtab; | |
16207 | } | |
16208 | else | |
16209 | { | |
16210 | symtab = nullptr; | |
16211 | complaint (_("could not find suitable " | |
16212 | "symtab for template parameter" | |
16213 | " - DIE at %s [in module %s]"), | |
16214 | sect_offset_str (die->sect_off), | |
16215 | objfile_name (objfile)); | |
16216 | } | |
16217 | ||
16218 | if (symtab != nullptr) | |
16219 | { | |
16220 | /* Make sure that the symtab is set on the new symbols. | |
16221 | Even though they don't appear in this symtab directly, | |
16222 | other parts of gdb assume that symbols do, and this is | |
16223 | reasonably true. */ | |
16224 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16225 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16226 | } | |
3e1d3d8c TT |
16227 | } |
16228 | } | |
134d01f1 DJ |
16229 | } |
16230 | ||
55426c9d JB |
16231 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16232 | update TYPE using some information only available in DIE's children. */ | |
16233 | ||
16234 | static void | |
16235 | update_enumeration_type_from_children (struct die_info *die, | |
16236 | struct type *type, | |
16237 | struct dwarf2_cu *cu) | |
16238 | { | |
60f7655a | 16239 | struct die_info *child_die; |
55426c9d JB |
16240 | int unsigned_enum = 1; |
16241 | int flag_enum = 1; | |
16242 | ULONGEST mask = 0; | |
55426c9d | 16243 | |
8268c778 | 16244 | auto_obstack obstack; |
55426c9d | 16245 | |
60f7655a DE |
16246 | for (child_die = die->child; |
16247 | child_die != NULL && child_die->tag; | |
16248 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16249 | { |
16250 | struct attribute *attr; | |
16251 | LONGEST value; | |
16252 | const gdb_byte *bytes; | |
16253 | struct dwarf2_locexpr_baton *baton; | |
16254 | const char *name; | |
60f7655a | 16255 | |
55426c9d JB |
16256 | if (child_die->tag != DW_TAG_enumerator) |
16257 | continue; | |
16258 | ||
16259 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16260 | if (attr == NULL) | |
16261 | continue; | |
16262 | ||
16263 | name = dwarf2_name (child_die, cu); | |
16264 | if (name == NULL) | |
16265 | name = "<anonymous enumerator>"; | |
16266 | ||
16267 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16268 | &value, &bytes, &baton); | |
16269 | if (value < 0) | |
16270 | { | |
16271 | unsigned_enum = 0; | |
16272 | flag_enum = 0; | |
16273 | } | |
16274 | else if ((mask & value) != 0) | |
16275 | flag_enum = 0; | |
16276 | else | |
16277 | mask |= value; | |
16278 | ||
16279 | /* If we already know that the enum type is neither unsigned, nor | |
16280 | a flag type, no need to look at the rest of the enumerates. */ | |
16281 | if (!unsigned_enum && !flag_enum) | |
16282 | break; | |
55426c9d JB |
16283 | } |
16284 | ||
16285 | if (unsigned_enum) | |
16286 | TYPE_UNSIGNED (type) = 1; | |
16287 | if (flag_enum) | |
16288 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16289 | } |
16290 | ||
134d01f1 DJ |
16291 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16292 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16293 | |
f792889a | 16294 | static struct type * |
134d01f1 | 16295 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16296 | { |
518817b3 | 16297 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16298 | struct type *type; |
c906108c | 16299 | struct attribute *attr; |
0114d602 | 16300 | const char *name; |
134d01f1 | 16301 | |
348e048f DE |
16302 | /* If the definition of this type lives in .debug_types, read that type. |
16303 | Don't follow DW_AT_specification though, that will take us back up | |
16304 | the chain and we want to go down. */ | |
45e58e77 | 16305 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16306 | if (attr) |
16307 | { | |
ac9ec31b | 16308 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16309 | |
ac9ec31b | 16310 | /* The type's CU may not be the same as CU. |
02142a6c | 16311 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16312 | return set_die_type (die, type, cu); |
16313 | } | |
16314 | ||
c906108c SS |
16315 | type = alloc_type (objfile); |
16316 | ||
16317 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16318 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16319 | if (name != NULL) |
e86ca25f | 16320 | TYPE_NAME (type) = name; |
c906108c | 16321 | |
0626fc76 TT |
16322 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16323 | if (attr != NULL) | |
16324 | { | |
16325 | struct type *underlying_type = die_type (die, cu); | |
16326 | ||
16327 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16328 | } | |
16329 | ||
e142c38c | 16330 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16331 | if (attr) |
16332 | { | |
16333 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16334 | } | |
16335 | else | |
16336 | { | |
16337 | TYPE_LENGTH (type) = 0; | |
16338 | } | |
16339 | ||
2b4424c3 TT |
16340 | maybe_set_alignment (cu, die, type); |
16341 | ||
137033e9 JB |
16342 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16343 | declared as private in the package spec, and then defined only | |
16344 | inside the package body. Such types are known as Taft Amendment | |
16345 | Types. When another package uses such a type, an incomplete DIE | |
16346 | may be generated by the compiler. */ | |
02eb380e | 16347 | if (die_is_declaration (die, cu)) |
876cecd0 | 16348 | TYPE_STUB (type) = 1; |
02eb380e | 16349 | |
0626fc76 TT |
16350 | /* Finish the creation of this type by using the enum's children. |
16351 | We must call this even when the underlying type has been provided | |
16352 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16353 | update_enumeration_type_from_children (die, type, cu); |
16354 | ||
0626fc76 TT |
16355 | /* If this type has an underlying type that is not a stub, then we |
16356 | may use its attributes. We always use the "unsigned" attribute | |
16357 | in this situation, because ordinarily we guess whether the type | |
16358 | is unsigned -- but the guess can be wrong and the underlying type | |
16359 | can tell us the reality. However, we defer to a local size | |
16360 | attribute if one exists, because this lets the compiler override | |
16361 | the underlying type if needed. */ | |
16362 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16363 | { | |
16364 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16365 | if (TYPE_LENGTH (type) == 0) | |
16366 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16367 | if (TYPE_RAW_ALIGN (type) == 0 |
16368 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16369 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16370 | } |
16371 | ||
3d567982 TT |
16372 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16373 | ||
f792889a | 16374 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16375 | } |
16376 | ||
16377 | /* Given a pointer to a die which begins an enumeration, process all | |
16378 | the dies that define the members of the enumeration, and create the | |
16379 | symbol for the enumeration type. | |
16380 | ||
16381 | NOTE: We reverse the order of the element list. */ | |
16382 | ||
16383 | static void | |
16384 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16385 | { | |
f792889a | 16386 | struct type *this_type; |
134d01f1 | 16387 | |
f792889a DJ |
16388 | this_type = get_die_type (die, cu); |
16389 | if (this_type == NULL) | |
16390 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16391 | |
639d11d3 | 16392 | if (die->child != NULL) |
c906108c | 16393 | { |
9dc481d3 DE |
16394 | struct die_info *child_die; |
16395 | struct symbol *sym; | |
16396 | struct field *fields = NULL; | |
16397 | int num_fields = 0; | |
15d034d0 | 16398 | const char *name; |
9dc481d3 | 16399 | |
639d11d3 | 16400 | child_die = die->child; |
c906108c SS |
16401 | while (child_die && child_die->tag) |
16402 | { | |
16403 | if (child_die->tag != DW_TAG_enumerator) | |
16404 | { | |
e7c27a73 | 16405 | process_die (child_die, cu); |
c906108c SS |
16406 | } |
16407 | else | |
16408 | { | |
39cbfefa DJ |
16409 | name = dwarf2_name (child_die, cu); |
16410 | if (name) | |
c906108c | 16411 | { |
f792889a | 16412 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16413 | |
16414 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16415 | { | |
16416 | fields = (struct field *) | |
16417 | xrealloc (fields, | |
16418 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16419 | * sizeof (struct field)); |
c906108c SS |
16420 | } |
16421 | ||
3567439c | 16422 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16423 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16424 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16425 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16426 | ||
16427 | num_fields++; | |
16428 | } | |
16429 | } | |
16430 | ||
16431 | child_die = sibling_die (child_die); | |
16432 | } | |
16433 | ||
16434 | if (num_fields) | |
16435 | { | |
f792889a DJ |
16436 | TYPE_NFIELDS (this_type) = num_fields; |
16437 | TYPE_FIELDS (this_type) = (struct field *) | |
16438 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16439 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16440 | sizeof (struct field) * num_fields); |
b8c9b27d | 16441 | xfree (fields); |
c906108c | 16442 | } |
c906108c | 16443 | } |
134d01f1 | 16444 | |
6c83ed52 TT |
16445 | /* If we are reading an enum from a .debug_types unit, and the enum |
16446 | is a declaration, and the enum is not the signatured type in the | |
16447 | unit, then we do not want to add a symbol for it. Adding a | |
16448 | symbol would in some cases obscure the true definition of the | |
16449 | enum, giving users an incomplete type when the definition is | |
16450 | actually available. Note that we do not want to do this for all | |
16451 | enums which are just declarations, because C++0x allows forward | |
16452 | enum declarations. */ | |
3019eac3 | 16453 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16454 | && die_is_declaration (die, cu)) |
16455 | { | |
52dc124a | 16456 | struct signatured_type *sig_type; |
6c83ed52 | 16457 | |
c0f78cd4 | 16458 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16459 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16460 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16461 | return; |
16462 | } | |
16463 | ||
f792889a | 16464 | new_symbol (die, this_type, cu); |
c906108c SS |
16465 | } |
16466 | ||
16467 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16468 | the DIE's type field. For now, this only handles one dimensional | |
16469 | arrays. */ | |
16470 | ||
f792889a | 16471 | static struct type * |
e7c27a73 | 16472 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16473 | { |
518817b3 | 16474 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16475 | struct die_info *child_die; |
7e314c57 | 16476 | struct type *type; |
c906108c | 16477 | struct type *element_type, *range_type, *index_type; |
c906108c | 16478 | struct attribute *attr; |
15d034d0 | 16479 | const char *name; |
a405673c | 16480 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16481 | unsigned int bit_stride = 0; |
c906108c | 16482 | |
e7c27a73 | 16483 | element_type = die_type (die, cu); |
c906108c | 16484 | |
7e314c57 JK |
16485 | /* The die_type call above may have already set the type for this DIE. */ |
16486 | type = get_die_type (die, cu); | |
16487 | if (type) | |
16488 | return type; | |
16489 | ||
dc53a7ad JB |
16490 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16491 | if (attr != NULL) | |
a405673c JB |
16492 | { |
16493 | int stride_ok; | |
9a49df9d AB |
16494 | struct type *prop_type |
16495 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
a405673c JB |
16496 | |
16497 | byte_stride_prop | |
16498 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16499 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16500 | prop_type); | |
a405673c JB |
16501 | if (!stride_ok) |
16502 | { | |
b98664d3 | 16503 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16504 | " - DIE at %s [in module %s]"), |
16505 | sect_offset_str (die->sect_off), | |
518817b3 | 16506 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16507 | /* Ignore this attribute. We will likely not be able to print |
16508 | arrays of this type correctly, but there is little we can do | |
16509 | to help if we cannot read the attribute's value. */ | |
16510 | byte_stride_prop = NULL; | |
16511 | } | |
16512 | } | |
dc53a7ad JB |
16513 | |
16514 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16515 | if (attr != NULL) | |
16516 | bit_stride = DW_UNSND (attr); | |
16517 | ||
c906108c SS |
16518 | /* Irix 6.2 native cc creates array types without children for |
16519 | arrays with unspecified length. */ | |
639d11d3 | 16520 | if (die->child == NULL) |
c906108c | 16521 | { |
46bf5051 | 16522 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16523 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16524 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16525 | byte_stride_prop, bit_stride); |
f792889a | 16526 | return set_die_type (die, type, cu); |
c906108c SS |
16527 | } |
16528 | ||
791afaa2 | 16529 | std::vector<struct type *> range_types; |
639d11d3 | 16530 | child_die = die->child; |
c906108c SS |
16531 | while (child_die && child_die->tag) |
16532 | { | |
16533 | if (child_die->tag == DW_TAG_subrange_type) | |
16534 | { | |
f792889a | 16535 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16536 | |
f792889a | 16537 | if (child_type != NULL) |
a02abb62 | 16538 | { |
0963b4bd MS |
16539 | /* The range type was succesfully read. Save it for the |
16540 | array type creation. */ | |
791afaa2 | 16541 | range_types.push_back (child_type); |
a02abb62 | 16542 | } |
c906108c SS |
16543 | } |
16544 | child_die = sibling_die (child_die); | |
16545 | } | |
16546 | ||
16547 | /* Dwarf2 dimensions are output from left to right, create the | |
16548 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16549 | |
c906108c | 16550 | type = element_type; |
7ca2d3a3 DL |
16551 | |
16552 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16553 | { | |
16554 | int i = 0; | |
9a619af0 | 16555 | |
791afaa2 | 16556 | while (i < range_types.size ()) |
dc53a7ad | 16557 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16558 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16559 | } |
16560 | else | |
16561 | { | |
791afaa2 | 16562 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16563 | while (ndim-- > 0) |
dc53a7ad | 16564 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16565 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16566 | } |
c906108c | 16567 | |
f5f8a009 EZ |
16568 | /* Understand Dwarf2 support for vector types (like they occur on |
16569 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16570 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16571 | custom vendor extension. The main difference between a regular | |
16572 | array and the vector variant is that vectors are passed by value | |
16573 | to functions. */ | |
e142c38c | 16574 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16575 | if (attr) |
ea37ba09 | 16576 | make_vector_type (type); |
f5f8a009 | 16577 | |
dbc98a8b KW |
16578 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16579 | implementation may choose to implement triple vectors using this | |
16580 | attribute. */ | |
16581 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16582 | if (attr) | |
16583 | { | |
16584 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16585 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16586 | else | |
b98664d3 | 16587 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16588 | "than the total size of elements")); |
dbc98a8b KW |
16589 | } |
16590 | ||
39cbfefa DJ |
16591 | name = dwarf2_name (die, cu); |
16592 | if (name) | |
16593 | TYPE_NAME (type) = name; | |
6e70227d | 16594 | |
2b4424c3 TT |
16595 | maybe_set_alignment (cu, die, type); |
16596 | ||
0963b4bd | 16597 | /* Install the type in the die. */ |
7e314c57 JK |
16598 | set_die_type (die, type, cu); |
16599 | ||
16600 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16601 | set_descriptive_type (type, die, cu); |
16602 | ||
7e314c57 | 16603 | return type; |
c906108c SS |
16604 | } |
16605 | ||
7ca2d3a3 | 16606 | static enum dwarf_array_dim_ordering |
6e70227d | 16607 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16608 | { |
16609 | struct attribute *attr; | |
16610 | ||
16611 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16612 | ||
aead7601 SM |
16613 | if (attr) |
16614 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16615 | |
0963b4bd MS |
16616 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16617 | opposite order to the dwarf2 specification, but data is still | |
16618 | laid out as per normal fortran. | |
7ca2d3a3 | 16619 | |
0963b4bd MS |
16620 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16621 | version checking. */ | |
7ca2d3a3 | 16622 | |
905e0470 PM |
16623 | if (cu->language == language_fortran |
16624 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16625 | { |
16626 | return DW_ORD_row_major; | |
16627 | } | |
16628 | ||
6e70227d | 16629 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16630 | { |
16631 | case array_column_major: | |
16632 | return DW_ORD_col_major; | |
16633 | case array_row_major: | |
16634 | default: | |
16635 | return DW_ORD_row_major; | |
16636 | }; | |
16637 | } | |
16638 | ||
72019c9c | 16639 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16640 | the DIE's type field. */ |
72019c9c | 16641 | |
f792889a | 16642 | static struct type * |
72019c9c GM |
16643 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16644 | { | |
7e314c57 JK |
16645 | struct type *domain_type, *set_type; |
16646 | struct attribute *attr; | |
f792889a | 16647 | |
7e314c57 JK |
16648 | domain_type = die_type (die, cu); |
16649 | ||
16650 | /* The die_type call above may have already set the type for this DIE. */ | |
16651 | set_type = get_die_type (die, cu); | |
16652 | if (set_type) | |
16653 | return set_type; | |
16654 | ||
16655 | set_type = create_set_type (NULL, domain_type); | |
16656 | ||
16657 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16658 | if (attr) |
16659 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16660 | |
2b4424c3 TT |
16661 | maybe_set_alignment (cu, die, set_type); |
16662 | ||
f792889a | 16663 | return set_die_type (die, set_type, cu); |
72019c9c | 16664 | } |
7ca2d3a3 | 16665 | |
0971de02 TT |
16666 | /* A helper for read_common_block that creates a locexpr baton. |
16667 | SYM is the symbol which we are marking as computed. | |
16668 | COMMON_DIE is the DIE for the common block. | |
16669 | COMMON_LOC is the location expression attribute for the common | |
16670 | block itself. | |
16671 | MEMBER_LOC is the location expression attribute for the particular | |
16672 | member of the common block that we are processing. | |
16673 | CU is the CU from which the above come. */ | |
16674 | ||
16675 | static void | |
16676 | mark_common_block_symbol_computed (struct symbol *sym, | |
16677 | struct die_info *common_die, | |
16678 | struct attribute *common_loc, | |
16679 | struct attribute *member_loc, | |
16680 | struct dwarf2_cu *cu) | |
16681 | { | |
518817b3 SM |
16682 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16683 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16684 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16685 | struct dwarf2_locexpr_baton *baton; | |
16686 | gdb_byte *ptr; | |
16687 | unsigned int cu_off; | |
16688 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16689 | LONGEST offset = 0; | |
16690 | ||
16691 | gdb_assert (common_loc && member_loc); | |
16692 | gdb_assert (attr_form_is_block (common_loc)); | |
16693 | gdb_assert (attr_form_is_block (member_loc) | |
16694 | || attr_form_is_constant (member_loc)); | |
16695 | ||
8d749320 | 16696 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16697 | baton->per_cu = cu->per_cu; |
16698 | gdb_assert (baton->per_cu); | |
16699 | ||
16700 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16701 | ||
16702 | if (attr_form_is_constant (member_loc)) | |
16703 | { | |
16704 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16705 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16706 | } | |
16707 | else | |
16708 | baton->size += DW_BLOCK (member_loc)->size; | |
16709 | ||
224c3ddb | 16710 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16711 | baton->data = ptr; |
16712 | ||
16713 | *ptr++ = DW_OP_call4; | |
9c541725 | 16714 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16715 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16716 | ptr += 4; | |
16717 | ||
16718 | if (attr_form_is_constant (member_loc)) | |
16719 | { | |
16720 | *ptr++ = DW_OP_addr; | |
16721 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16722 | ptr += cu->header.addr_size; | |
16723 | } | |
16724 | else | |
16725 | { | |
16726 | /* We have to copy the data here, because DW_OP_call4 will only | |
16727 | use a DW_AT_location attribute. */ | |
16728 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16729 | ptr += DW_BLOCK (member_loc)->size; | |
16730 | } | |
16731 | ||
16732 | *ptr++ = DW_OP_plus; | |
16733 | gdb_assert (ptr - baton->data == baton->size); | |
16734 | ||
0971de02 | 16735 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16736 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16737 | } |
16738 | ||
4357ac6c TT |
16739 | /* Create appropriate locally-scoped variables for all the |
16740 | DW_TAG_common_block entries. Also create a struct common_block | |
16741 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16742 | is used to sepate the common blocks name namespace from regular | |
16743 | variable names. */ | |
c906108c SS |
16744 | |
16745 | static void | |
e7c27a73 | 16746 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16747 | { |
0971de02 TT |
16748 | struct attribute *attr; |
16749 | ||
16750 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16751 | if (attr) | |
16752 | { | |
16753 | /* Support the .debug_loc offsets. */ | |
16754 | if (attr_form_is_block (attr)) | |
16755 | { | |
16756 | /* Ok. */ | |
16757 | } | |
16758 | else if (attr_form_is_section_offset (attr)) | |
16759 | { | |
16760 | dwarf2_complex_location_expr_complaint (); | |
16761 | attr = NULL; | |
16762 | } | |
16763 | else | |
16764 | { | |
16765 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16766 | "common block member"); | |
16767 | attr = NULL; | |
16768 | } | |
16769 | } | |
16770 | ||
639d11d3 | 16771 | if (die->child != NULL) |
c906108c | 16772 | { |
518817b3 | 16773 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16774 | struct die_info *child_die; |
16775 | size_t n_entries = 0, size; | |
16776 | struct common_block *common_block; | |
16777 | struct symbol *sym; | |
74ac6d43 | 16778 | |
4357ac6c TT |
16779 | for (child_die = die->child; |
16780 | child_die && child_die->tag; | |
16781 | child_die = sibling_die (child_die)) | |
16782 | ++n_entries; | |
16783 | ||
16784 | size = (sizeof (struct common_block) | |
16785 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16786 | common_block |
16787 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16788 | size); | |
4357ac6c TT |
16789 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16790 | common_block->n_entries = 0; | |
16791 | ||
16792 | for (child_die = die->child; | |
16793 | child_die && child_die->tag; | |
16794 | child_die = sibling_die (child_die)) | |
16795 | { | |
16796 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16797 | symbol scope. */ | |
e7c27a73 | 16798 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16799 | if (sym != NULL) |
16800 | { | |
16801 | struct attribute *member_loc; | |
16802 | ||
16803 | common_block->contents[common_block->n_entries++] = sym; | |
16804 | ||
16805 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16806 | cu); | |
16807 | if (member_loc) | |
16808 | { | |
16809 | /* GDB has handled this for a long time, but it is | |
16810 | not specified by DWARF. It seems to have been | |
16811 | emitted by gfortran at least as recently as: | |
16812 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16813 | complaint (_("Variable in common block has " |
0971de02 | 16814 | "DW_AT_data_member_location " |
9d8780f0 SM |
16815 | "- DIE at %s [in module %s]"), |
16816 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16817 | objfile_name (objfile)); |
0971de02 TT |
16818 | |
16819 | if (attr_form_is_section_offset (member_loc)) | |
16820 | dwarf2_complex_location_expr_complaint (); | |
16821 | else if (attr_form_is_constant (member_loc) | |
16822 | || attr_form_is_block (member_loc)) | |
16823 | { | |
16824 | if (attr) | |
16825 | mark_common_block_symbol_computed (sym, die, attr, | |
16826 | member_loc, cu); | |
16827 | } | |
16828 | else | |
16829 | dwarf2_complex_location_expr_complaint (); | |
16830 | } | |
16831 | } | |
c906108c | 16832 | } |
4357ac6c TT |
16833 | |
16834 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16835 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16836 | } |
16837 | } | |
16838 | ||
0114d602 | 16839 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16840 | |
0114d602 DJ |
16841 | static struct type * |
16842 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16843 | { |
518817b3 | 16844 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16845 | const char *previous_prefix, *name; |
9219021c | 16846 | int is_anonymous; |
0114d602 DJ |
16847 | struct type *type; |
16848 | ||
16849 | /* For extensions, reuse the type of the original namespace. */ | |
16850 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16851 | { | |
16852 | struct die_info *ext_die; | |
16853 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16854 | |
0114d602 DJ |
16855 | ext_die = dwarf2_extension (die, &ext_cu); |
16856 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16857 | |
16858 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16859 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16860 | return set_die_type (die, type, cu); |
16861 | } | |
9219021c | 16862 | |
e142c38c | 16863 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16864 | |
16865 | /* Now build the name of the current namespace. */ | |
16866 | ||
0114d602 DJ |
16867 | previous_prefix = determine_prefix (die, cu); |
16868 | if (previous_prefix[0] != '\0') | |
16869 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16870 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16871 | |
16872 | /* Create the type. */ | |
19f392bc | 16873 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16874 | |
60531b24 | 16875 | return set_die_type (die, type, cu); |
0114d602 DJ |
16876 | } |
16877 | ||
22cee43f | 16878 | /* Read a namespace scope. */ |
0114d602 DJ |
16879 | |
16880 | static void | |
16881 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16882 | { | |
518817b3 | 16883 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16884 | int is_anonymous; |
9219021c | 16885 | |
5c4e30ca DC |
16886 | /* Add a symbol associated to this if we haven't seen the namespace |
16887 | before. Also, add a using directive if it's an anonymous | |
16888 | namespace. */ | |
9219021c | 16889 | |
f2f0e013 | 16890 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16891 | { |
16892 | struct type *type; | |
16893 | ||
0114d602 | 16894 | type = read_type_die (die, cu); |
e7c27a73 | 16895 | new_symbol (die, type, cu); |
5c4e30ca | 16896 | |
e8e80198 | 16897 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16898 | if (is_anonymous) |
0114d602 DJ |
16899 | { |
16900 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16901 | |
eb1e02fd | 16902 | std::vector<const char *> excludes; |
804d2729 | 16903 | add_using_directive (using_directives (cu), |
22cee43f | 16904 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16905 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16906 | } |
5c4e30ca | 16907 | } |
9219021c | 16908 | |
639d11d3 | 16909 | if (die->child != NULL) |
d9fa45fe | 16910 | { |
639d11d3 | 16911 | struct die_info *child_die = die->child; |
6e70227d | 16912 | |
d9fa45fe DC |
16913 | while (child_die && child_die->tag) |
16914 | { | |
e7c27a73 | 16915 | process_die (child_die, cu); |
d9fa45fe DC |
16916 | child_die = sibling_die (child_die); |
16917 | } | |
16918 | } | |
38d518c9 EZ |
16919 | } |
16920 | ||
f55ee35c JK |
16921 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16922 | imported module. Still we need that type as local Fortran "use ... only" | |
16923 | declaration imports depend on the created type in determine_prefix. */ | |
16924 | ||
16925 | static struct type * | |
16926 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16927 | { | |
518817b3 | 16928 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16929 | const char *module_name; |
f55ee35c JK |
16930 | struct type *type; |
16931 | ||
16932 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16933 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16934 | |
f55ee35c JK |
16935 | return set_die_type (die, type, cu); |
16936 | } | |
16937 | ||
5d7cb8df JK |
16938 | /* Read a Fortran module. */ |
16939 | ||
16940 | static void | |
16941 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16942 | { | |
16943 | struct die_info *child_die = die->child; | |
530e8392 KB |
16944 | struct type *type; |
16945 | ||
16946 | type = read_type_die (die, cu); | |
16947 | new_symbol (die, type, cu); | |
5d7cb8df | 16948 | |
5d7cb8df JK |
16949 | while (child_die && child_die->tag) |
16950 | { | |
16951 | process_die (child_die, cu); | |
16952 | child_die = sibling_die (child_die); | |
16953 | } | |
16954 | } | |
16955 | ||
38d518c9 EZ |
16956 | /* Return the name of the namespace represented by DIE. Set |
16957 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16958 | namespace. */ | |
16959 | ||
16960 | static const char * | |
e142c38c | 16961 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16962 | { |
16963 | struct die_info *current_die; | |
16964 | const char *name = NULL; | |
16965 | ||
16966 | /* Loop through the extensions until we find a name. */ | |
16967 | ||
16968 | for (current_die = die; | |
16969 | current_die != NULL; | |
f2f0e013 | 16970 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16971 | { |
96553a0c DE |
16972 | /* We don't use dwarf2_name here so that we can detect the absence |
16973 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16974 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16975 | |
38d518c9 EZ |
16976 | if (name != NULL) |
16977 | break; | |
16978 | } | |
16979 | ||
16980 | /* Is it an anonymous namespace? */ | |
16981 | ||
16982 | *is_anonymous = (name == NULL); | |
16983 | if (*is_anonymous) | |
2b1dbab0 | 16984 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16985 | |
16986 | return name; | |
d9fa45fe DC |
16987 | } |
16988 | ||
c906108c SS |
16989 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16990 | the user defined type vector. */ | |
16991 | ||
f792889a | 16992 | static struct type * |
e7c27a73 | 16993 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16994 | { |
518817b3 SM |
16995 | struct gdbarch *gdbarch |
16996 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16997 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16998 | struct type *type; |
8b2dbe47 KB |
16999 | struct attribute *attr_byte_size; |
17000 | struct attribute *attr_address_class; | |
17001 | int byte_size, addr_class; | |
7e314c57 JK |
17002 | struct type *target_type; |
17003 | ||
17004 | target_type = die_type (die, cu); | |
c906108c | 17005 | |
7e314c57 JK |
17006 | /* The die_type call above may have already set the type for this DIE. */ |
17007 | type = get_die_type (die, cu); | |
17008 | if (type) | |
17009 | return type; | |
17010 | ||
17011 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17012 | |
e142c38c | 17013 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17014 | if (attr_byte_size) |
17015 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17016 | else |
8b2dbe47 KB |
17017 | byte_size = cu_header->addr_size; |
17018 | ||
e142c38c | 17019 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17020 | if (attr_address_class) |
17021 | addr_class = DW_UNSND (attr_address_class); | |
17022 | else | |
17023 | addr_class = DW_ADDR_none; | |
17024 | ||
2b4424c3 TT |
17025 | ULONGEST alignment = get_alignment (cu, die); |
17026 | ||
17027 | /* If the pointer size, alignment, or address class is different | |
17028 | than the default, create a type variant marked as such and set | |
17029 | the length accordingly. */ | |
17030 | if (TYPE_LENGTH (type) != byte_size | |
17031 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17032 | && alignment != TYPE_RAW_ALIGN (type)) | |
17033 | || addr_class != DW_ADDR_none) | |
c906108c | 17034 | { |
5e2b427d | 17035 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17036 | { |
17037 | int type_flags; | |
17038 | ||
849957d9 | 17039 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17040 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17041 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17042 | == 0); | |
8b2dbe47 KB |
17043 | type = make_type_with_address_space (type, type_flags); |
17044 | } | |
17045 | else if (TYPE_LENGTH (type) != byte_size) | |
17046 | { | |
b98664d3 | 17047 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17048 | } |
2b4424c3 TT |
17049 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17050 | { | |
b98664d3 | 17051 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17052 | " - DIE at %s [in module %s]"), |
17053 | sect_offset_str (die->sect_off), | |
17054 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17055 | } | |
6e70227d | 17056 | else |
9a619af0 MS |
17057 | { |
17058 | /* Should we also complain about unhandled address classes? */ | |
17059 | } | |
c906108c | 17060 | } |
8b2dbe47 KB |
17061 | |
17062 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17063 | set_type_align (type, alignment); |
f792889a | 17064 | return set_die_type (die, type, cu); |
c906108c SS |
17065 | } |
17066 | ||
17067 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17068 | the user defined type vector. */ | |
17069 | ||
f792889a | 17070 | static struct type * |
e7c27a73 | 17071 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17072 | { |
17073 | struct type *type; | |
17074 | struct type *to_type; | |
17075 | struct type *domain; | |
17076 | ||
e7c27a73 DJ |
17077 | to_type = die_type (die, cu); |
17078 | domain = die_containing_type (die, cu); | |
0d5de010 | 17079 | |
7e314c57 JK |
17080 | /* The calls above may have already set the type for this DIE. */ |
17081 | type = get_die_type (die, cu); | |
17082 | if (type) | |
17083 | return type; | |
17084 | ||
0d5de010 DJ |
17085 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17086 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17087 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17088 | { | |
518817b3 SM |
17089 | struct type *new_type |
17090 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17091 | |
17092 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17093 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17094 | TYPE_VARARGS (to_type)); | |
17095 | type = lookup_methodptr_type (new_type); | |
17096 | } | |
0d5de010 DJ |
17097 | else |
17098 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17099 | |
f792889a | 17100 | return set_die_type (die, type, cu); |
c906108c SS |
17101 | } |
17102 | ||
4297a3f0 | 17103 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17104 | the user defined type vector. */ |
17105 | ||
f792889a | 17106 | static struct type * |
4297a3f0 AV |
17107 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17108 | enum type_code refcode) | |
c906108c | 17109 | { |
e7c27a73 | 17110 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17111 | struct type *type, *target_type; |
c906108c SS |
17112 | struct attribute *attr; |
17113 | ||
4297a3f0 AV |
17114 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17115 | ||
7e314c57 JK |
17116 | target_type = die_type (die, cu); |
17117 | ||
17118 | /* The die_type call above may have already set the type for this DIE. */ | |
17119 | type = get_die_type (die, cu); | |
17120 | if (type) | |
17121 | return type; | |
17122 | ||
4297a3f0 | 17123 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17124 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17125 | if (attr) |
17126 | { | |
17127 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17128 | } | |
17129 | else | |
17130 | { | |
107d2387 | 17131 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17132 | } |
2b4424c3 | 17133 | maybe_set_alignment (cu, die, type); |
f792889a | 17134 | return set_die_type (die, type, cu); |
c906108c SS |
17135 | } |
17136 | ||
cf363f18 MW |
17137 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17138 | outputs DWARF type qualifiers that apply to an array, not the | |
17139 | element type. But GDB relies on the array element type to carry | |
17140 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17141 | specification. */ | |
17142 | ||
17143 | static struct type * | |
17144 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17145 | struct type *base_type, int cnst, int voltl) | |
17146 | { | |
17147 | struct type *el_type, *inner_array; | |
17148 | ||
17149 | base_type = copy_type (base_type); | |
17150 | inner_array = base_type; | |
17151 | ||
17152 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17153 | { | |
17154 | TYPE_TARGET_TYPE (inner_array) = | |
17155 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17156 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17157 | } | |
17158 | ||
17159 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17160 | cnst |= TYPE_CONST (el_type); | |
17161 | voltl |= TYPE_VOLATILE (el_type); | |
17162 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17163 | ||
17164 | return set_die_type (die, base_type, cu); | |
17165 | } | |
17166 | ||
f792889a | 17167 | static struct type * |
e7c27a73 | 17168 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17169 | { |
f792889a | 17170 | struct type *base_type, *cv_type; |
c906108c | 17171 | |
e7c27a73 | 17172 | base_type = die_type (die, cu); |
7e314c57 JK |
17173 | |
17174 | /* The die_type call above may have already set the type for this DIE. */ | |
17175 | cv_type = get_die_type (die, cu); | |
17176 | if (cv_type) | |
17177 | return cv_type; | |
17178 | ||
2f608a3a KW |
17179 | /* In case the const qualifier is applied to an array type, the element type |
17180 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17181 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17182 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17183 | |
f792889a DJ |
17184 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17185 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17186 | } |
17187 | ||
f792889a | 17188 | static struct type * |
e7c27a73 | 17189 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17190 | { |
f792889a | 17191 | struct type *base_type, *cv_type; |
c906108c | 17192 | |
e7c27a73 | 17193 | base_type = die_type (die, cu); |
7e314c57 JK |
17194 | |
17195 | /* The die_type call above may have already set the type for this DIE. */ | |
17196 | cv_type = get_die_type (die, cu); | |
17197 | if (cv_type) | |
17198 | return cv_type; | |
17199 | ||
cf363f18 MW |
17200 | /* In case the volatile qualifier is applied to an array type, the |
17201 | element type is so qualified, not the array type (section 6.7.3 | |
17202 | of C99). */ | |
17203 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17204 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17205 | ||
f792889a DJ |
17206 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17207 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17208 | } |
17209 | ||
06d66ee9 TT |
17210 | /* Handle DW_TAG_restrict_type. */ |
17211 | ||
17212 | static struct type * | |
17213 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17214 | { | |
17215 | struct type *base_type, *cv_type; | |
17216 | ||
17217 | base_type = die_type (die, cu); | |
17218 | ||
17219 | /* The die_type call above may have already set the type for this DIE. */ | |
17220 | cv_type = get_die_type (die, cu); | |
17221 | if (cv_type) | |
17222 | return cv_type; | |
17223 | ||
17224 | cv_type = make_restrict_type (base_type); | |
17225 | return set_die_type (die, cv_type, cu); | |
17226 | } | |
17227 | ||
a2c2acaf MW |
17228 | /* Handle DW_TAG_atomic_type. */ |
17229 | ||
17230 | static struct type * | |
17231 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17232 | { | |
17233 | struct type *base_type, *cv_type; | |
17234 | ||
17235 | base_type = die_type (die, cu); | |
17236 | ||
17237 | /* The die_type call above may have already set the type for this DIE. */ | |
17238 | cv_type = get_die_type (die, cu); | |
17239 | if (cv_type) | |
17240 | return cv_type; | |
17241 | ||
17242 | cv_type = make_atomic_type (base_type); | |
17243 | return set_die_type (die, cv_type, cu); | |
17244 | } | |
17245 | ||
c906108c SS |
17246 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17247 | the user defined type vector. It isn't really a user defined type, | |
17248 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17249 | attribute to reference it. */ | |
17250 | ||
f792889a | 17251 | static struct type * |
e7c27a73 | 17252 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17253 | { |
518817b3 | 17254 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17255 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17256 | struct type *type, *range_type, *index_type, *char_type; |
17257 | struct attribute *attr; | |
17258 | unsigned int length; | |
17259 | ||
e142c38c | 17260 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17261 | if (attr) |
17262 | { | |
17263 | length = DW_UNSND (attr); | |
17264 | } | |
17265 | else | |
17266 | { | |
0963b4bd | 17267 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17268 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17269 | if (attr) |
17270 | { | |
17271 | length = DW_UNSND (attr); | |
17272 | } | |
17273 | else | |
17274 | { | |
17275 | length = 1; | |
17276 | } | |
c906108c | 17277 | } |
6ccb9162 | 17278 | |
46bf5051 | 17279 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17280 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17281 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17282 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17283 | |
f792889a | 17284 | return set_die_type (die, type, cu); |
c906108c SS |
17285 | } |
17286 | ||
4d804846 JB |
17287 | /* Assuming that DIE corresponds to a function, returns nonzero |
17288 | if the function is prototyped. */ | |
17289 | ||
17290 | static int | |
17291 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17292 | { | |
17293 | struct attribute *attr; | |
17294 | ||
17295 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17296 | if (attr && (DW_UNSND (attr) != 0)) | |
17297 | return 1; | |
17298 | ||
17299 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17300 | is only meaninful for C, but the concept also extends to other | |
17301 | languages that allow unprototyped functions (Eg: Objective C). | |
17302 | For all other languages, assume that functions are always | |
17303 | prototyped. */ | |
17304 | if (cu->language != language_c | |
17305 | && cu->language != language_objc | |
17306 | && cu->language != language_opencl) | |
17307 | return 1; | |
17308 | ||
17309 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17310 | prototyped and unprototyped functions; default to prototyped, | |
17311 | since that is more common in modern code (and RealView warns | |
17312 | about unprototyped functions). */ | |
17313 | if (producer_is_realview (cu->producer)) | |
17314 | return 1; | |
17315 | ||
17316 | return 0; | |
17317 | } | |
17318 | ||
c906108c SS |
17319 | /* Handle DIES due to C code like: |
17320 | ||
17321 | struct foo | |
c5aa993b JM |
17322 | { |
17323 | int (*funcp)(int a, long l); | |
17324 | int b; | |
17325 | }; | |
c906108c | 17326 | |
0963b4bd | 17327 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17328 | |
f792889a | 17329 | static struct type * |
e7c27a73 | 17330 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17331 | { |
518817b3 | 17332 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17333 | struct type *type; /* Type that this function returns. */ |
17334 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17335 | struct attribute *attr; |
17336 | ||
e7c27a73 | 17337 | type = die_type (die, cu); |
7e314c57 JK |
17338 | |
17339 | /* The die_type call above may have already set the type for this DIE. */ | |
17340 | ftype = get_die_type (die, cu); | |
17341 | if (ftype) | |
17342 | return ftype; | |
17343 | ||
0c8b41f1 | 17344 | ftype = lookup_function_type (type); |
c906108c | 17345 | |
4d804846 | 17346 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17347 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17348 | |
c055b101 CV |
17349 | /* Store the calling convention in the type if it's available in |
17350 | the subroutine die. Otherwise set the calling convention to | |
17351 | the default value DW_CC_normal. */ | |
17352 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17353 | if (attr) |
17354 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17355 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17356 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17357 | else | |
17358 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17359 | |
743649fd MW |
17360 | /* Record whether the function returns normally to its caller or not |
17361 | if the DWARF producer set that information. */ | |
17362 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17363 | if (attr && (DW_UNSND (attr) != 0)) | |
17364 | TYPE_NO_RETURN (ftype) = 1; | |
17365 | ||
76c10ea2 GM |
17366 | /* We need to add the subroutine type to the die immediately so |
17367 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17368 | declared as the same subroutine type. */ |
76c10ea2 | 17369 | set_die_type (die, ftype, cu); |
6e70227d | 17370 | |
639d11d3 | 17371 | if (die->child != NULL) |
c906108c | 17372 | { |
bb5ed363 | 17373 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17374 | struct die_info *child_die; |
8072405b | 17375 | int nparams, iparams; |
c906108c SS |
17376 | |
17377 | /* Count the number of parameters. | |
17378 | FIXME: GDB currently ignores vararg functions, but knows about | |
17379 | vararg member functions. */ | |
8072405b | 17380 | nparams = 0; |
639d11d3 | 17381 | child_die = die->child; |
c906108c SS |
17382 | while (child_die && child_die->tag) |
17383 | { | |
17384 | if (child_die->tag == DW_TAG_formal_parameter) | |
17385 | nparams++; | |
17386 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17387 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17388 | child_die = sibling_die (child_die); |
17389 | } | |
17390 | ||
17391 | /* Allocate storage for parameters and fill them in. */ | |
17392 | TYPE_NFIELDS (ftype) = nparams; | |
17393 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17394 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17395 | |
8072405b JK |
17396 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17397 | even if we error out during the parameters reading below. */ | |
17398 | for (iparams = 0; iparams < nparams; iparams++) | |
17399 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17400 | ||
17401 | iparams = 0; | |
639d11d3 | 17402 | child_die = die->child; |
c906108c SS |
17403 | while (child_die && child_die->tag) |
17404 | { | |
17405 | if (child_die->tag == DW_TAG_formal_parameter) | |
17406 | { | |
3ce3b1ba PA |
17407 | struct type *arg_type; |
17408 | ||
17409 | /* DWARF version 2 has no clean way to discern C++ | |
17410 | static and non-static member functions. G++ helps | |
17411 | GDB by marking the first parameter for non-static | |
17412 | member functions (which is the this pointer) as | |
17413 | artificial. We pass this information to | |
17414 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17415 | ||
17416 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17417 | 4.5 does not yet generate. */ | |
e142c38c | 17418 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17419 | if (attr) |
17420 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17421 | else | |
9c37b5ae | 17422 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17423 | arg_type = die_type (child_die, cu); |
17424 | ||
17425 | /* RealView does not mark THIS as const, which the testsuite | |
17426 | expects. GCC marks THIS as const in method definitions, | |
17427 | but not in the class specifications (GCC PR 43053). */ | |
17428 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17429 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17430 | { | |
17431 | int is_this = 0; | |
17432 | struct dwarf2_cu *arg_cu = cu; | |
17433 | const char *name = dwarf2_name (child_die, cu); | |
17434 | ||
17435 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17436 | if (attr) | |
17437 | { | |
17438 | /* If the compiler emits this, use it. */ | |
17439 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17440 | is_this = 1; | |
17441 | } | |
17442 | else if (name && strcmp (name, "this") == 0) | |
17443 | /* Function definitions will have the argument names. */ | |
17444 | is_this = 1; | |
17445 | else if (name == NULL && iparams == 0) | |
17446 | /* Declarations may not have the names, so like | |
17447 | elsewhere in GDB, assume an artificial first | |
17448 | argument is "this". */ | |
17449 | is_this = 1; | |
17450 | ||
17451 | if (is_this) | |
17452 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17453 | arg_type, 0); | |
17454 | } | |
17455 | ||
17456 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17457 | iparams++; |
17458 | } | |
17459 | child_die = sibling_die (child_die); | |
17460 | } | |
17461 | } | |
17462 | ||
76c10ea2 | 17463 | return ftype; |
c906108c SS |
17464 | } |
17465 | ||
f792889a | 17466 | static struct type * |
e7c27a73 | 17467 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17468 | { |
518817b3 | 17469 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17470 | const char *name = NULL; |
3c8e0968 | 17471 | struct type *this_type, *target_type; |
c906108c | 17472 | |
94af9270 | 17473 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17474 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17475 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17476 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17477 | target_type = die_type (die, cu); |
17478 | if (target_type != this_type) | |
17479 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17480 | else | |
17481 | { | |
17482 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17483 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17484 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17485 | "- DIE at %s [in module %s]"), |
17486 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17487 | TYPE_TARGET_TYPE (this_type) = NULL; |
17488 | } | |
f792889a | 17489 | return this_type; |
c906108c SS |
17490 | } |
17491 | ||
9b790ce7 UW |
17492 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17493 | (which may be different from NAME) to the architecture back-end to allow | |
17494 | it to guess the correct format if necessary. */ | |
17495 | ||
17496 | static struct type * | |
17497 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17498 | const char *name_hint) | |
17499 | { | |
17500 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17501 | const struct floatformat **format; | |
17502 | struct type *type; | |
17503 | ||
17504 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17505 | if (format) | |
17506 | type = init_float_type (objfile, bits, name, format); | |
17507 | else | |
77b7c781 | 17508 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17509 | |
17510 | return type; | |
17511 | } | |
17512 | ||
eb77c9df AB |
17513 | /* Allocate an integer type of size BITS and name NAME. */ |
17514 | ||
17515 | static struct type * | |
17516 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17517 | int bits, int unsigned_p, const char *name) | |
17518 | { | |
17519 | struct type *type; | |
17520 | ||
17521 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17522 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17523 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17524 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17525 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17526 | type = objfile_type (objfile)->builtin_void; |
17527 | else | |
17528 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17529 | ||
17530 | return type; | |
17531 | } | |
17532 | ||
8bdc1658 AB |
17533 | /* Initialise and return a floating point type of size BITS suitable for |
17534 | use as a component of a complex number. The NAME_HINT is passed through | |
17535 | when initialising the floating point type and is the name of the complex | |
17536 | type. | |
17537 | ||
17538 | As DWARF doesn't currently provide an explicit name for the components | |
17539 | of a complex number, but it can be helpful to have these components | |
17540 | named, we try to select a suitable name based on the size of the | |
17541 | component. */ | |
17542 | static struct type * | |
17543 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17544 | struct objfile *objfile, | |
17545 | int bits, const char *name_hint) | |
17546 | { | |
17547 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17548 | struct type *tt = nullptr; | |
17549 | ||
35add35e AB |
17550 | /* Try to find a suitable floating point builtin type of size BITS. |
17551 | We're going to use the name of this type as the name for the complex | |
17552 | target type that we are about to create. */ | |
1db455a7 | 17553 | switch (cu->language) |
8bdc1658 | 17554 | { |
1db455a7 AB |
17555 | case language_fortran: |
17556 | switch (bits) | |
17557 | { | |
17558 | case 32: | |
17559 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17560 | break; | |
17561 | case 64: | |
17562 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17563 | break; | |
17564 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17565 | case 128: | |
17566 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17567 | break; | |
17568 | } | |
8bdc1658 | 17569 | break; |
1db455a7 AB |
17570 | default: |
17571 | switch (bits) | |
17572 | { | |
17573 | case 32: | |
17574 | tt = builtin_type (gdbarch)->builtin_float; | |
17575 | break; | |
17576 | case 64: | |
17577 | tt = builtin_type (gdbarch)->builtin_double; | |
17578 | break; | |
17579 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17580 | case 128: | |
17581 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17582 | break; | |
17583 | } | |
8bdc1658 AB |
17584 | break; |
17585 | } | |
17586 | ||
35add35e AB |
17587 | /* If the type we found doesn't match the size we were looking for, then |
17588 | pretend we didn't find a type at all, the complex target type we | |
17589 | create will then be nameless. */ | |
a12e5744 | 17590 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17591 | tt = nullptr; |
17592 | ||
8bdc1658 AB |
17593 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
17594 | return dwarf2_init_float_type (objfile, bits, name, name_hint); | |
17595 | } | |
17596 | ||
c906108c SS |
17597 | /* Find a representation of a given base type and install |
17598 | it in the TYPE field of the die. */ | |
17599 | ||
f792889a | 17600 | static struct type * |
e7c27a73 | 17601 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17602 | { |
518817b3 | 17603 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17604 | struct type *type; |
17605 | struct attribute *attr; | |
19f392bc | 17606 | int encoding = 0, bits = 0; |
15d034d0 | 17607 | const char *name; |
c906108c | 17608 | |
e142c38c | 17609 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17610 | if (attr) |
17611 | { | |
17612 | encoding = DW_UNSND (attr); | |
17613 | } | |
e142c38c | 17614 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17615 | if (attr) |
17616 | { | |
19f392bc | 17617 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17618 | } |
39cbfefa | 17619 | name = dwarf2_name (die, cu); |
6ccb9162 | 17620 | if (!name) |
c906108c | 17621 | { |
b98664d3 | 17622 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17623 | } |
6ccb9162 UW |
17624 | |
17625 | switch (encoding) | |
c906108c | 17626 | { |
6ccb9162 UW |
17627 | case DW_ATE_address: |
17628 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17629 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17630 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17631 | break; |
17632 | case DW_ATE_boolean: | |
19f392bc | 17633 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17634 | break; |
17635 | case DW_ATE_complex_float: | |
8bdc1658 | 17636 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name); |
19f392bc | 17637 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17638 | break; |
17639 | case DW_ATE_decimal_float: | |
19f392bc | 17640 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17641 | break; |
17642 | case DW_ATE_float: | |
9b790ce7 | 17643 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17644 | break; |
17645 | case DW_ATE_signed: | |
eb77c9df | 17646 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17647 | break; |
17648 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17649 | if (cu->language == language_fortran |
17650 | && name | |
61012eef | 17651 | && startswith (name, "character(")) |
19f392bc UW |
17652 | type = init_character_type (objfile, bits, 1, name); |
17653 | else | |
eb77c9df | 17654 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17655 | break; |
17656 | case DW_ATE_signed_char: | |
6e70227d | 17657 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17658 | || cu->language == language_pascal |
17659 | || cu->language == language_fortran) | |
19f392bc UW |
17660 | type = init_character_type (objfile, bits, 0, name); |
17661 | else | |
eb77c9df | 17662 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17663 | break; |
17664 | case DW_ATE_unsigned_char: | |
868a0084 | 17665 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17666 | || cu->language == language_pascal |
c44af4eb TT |
17667 | || cu->language == language_fortran |
17668 | || cu->language == language_rust) | |
19f392bc UW |
17669 | type = init_character_type (objfile, bits, 1, name); |
17670 | else | |
eb77c9df | 17671 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17672 | break; |
75079b2b | 17673 | case DW_ATE_UTF: |
53e710ac PA |
17674 | { |
17675 | gdbarch *arch = get_objfile_arch (objfile); | |
17676 | ||
17677 | if (bits == 16) | |
17678 | type = builtin_type (arch)->builtin_char16; | |
17679 | else if (bits == 32) | |
17680 | type = builtin_type (arch)->builtin_char32; | |
17681 | else | |
17682 | { | |
b98664d3 | 17683 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17684 | bits); |
eb77c9df | 17685 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17686 | } |
17687 | return set_die_type (die, type, cu); | |
17688 | } | |
75079b2b TT |
17689 | break; |
17690 | ||
6ccb9162 | 17691 | default: |
b98664d3 | 17692 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17693 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17694 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17695 | break; |
c906108c | 17696 | } |
6ccb9162 | 17697 | |
0114d602 | 17698 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17699 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17700 | |
2b4424c3 TT |
17701 | maybe_set_alignment (cu, die, type); |
17702 | ||
f792889a | 17703 | return set_die_type (die, type, cu); |
c906108c SS |
17704 | } |
17705 | ||
80180f79 SA |
17706 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17707 | resulting value of the attribute into struct bound_prop. | |
17708 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17709 | ||
17710 | static int | |
17711 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17712 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17713 | struct type *default_type) | |
80180f79 SA |
17714 | { |
17715 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17716 | struct obstack *obstack |
17717 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17718 | |
9a49df9d AB |
17719 | gdb_assert (default_type != NULL); |
17720 | ||
80180f79 SA |
17721 | if (attr == NULL || prop == NULL) |
17722 | return 0; | |
17723 | ||
17724 | if (attr_form_is_block (attr)) | |
17725 | { | |
8d749320 | 17726 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17727 | baton->property_type = default_type; |
80180f79 SA |
17728 | baton->locexpr.per_cu = cu->per_cu; |
17729 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17730 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
9a49df9d | 17731 | baton->locexpr.is_reference = false; |
80180f79 SA |
17732 | prop->data.baton = baton; |
17733 | prop->kind = PROP_LOCEXPR; | |
17734 | gdb_assert (prop->data.baton != NULL); | |
17735 | } | |
17736 | else if (attr_form_is_ref (attr)) | |
17737 | { | |
17738 | struct dwarf2_cu *target_cu = cu; | |
17739 | struct die_info *target_die; | |
17740 | struct attribute *target_attr; | |
17741 | ||
17742 | target_die = follow_die_ref (die, attr, &target_cu); | |
17743 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17744 | if (target_attr == NULL) |
17745 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17746 | target_cu); | |
80180f79 SA |
17747 | if (target_attr == NULL) |
17748 | return 0; | |
17749 | ||
df25ebbd | 17750 | switch (target_attr->name) |
80180f79 | 17751 | { |
df25ebbd JB |
17752 | case DW_AT_location: |
17753 | if (attr_form_is_section_offset (target_attr)) | |
17754 | { | |
8d749320 | 17755 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17756 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17757 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17758 | prop->data.baton = baton; | |
17759 | prop->kind = PROP_LOCLIST; | |
17760 | gdb_assert (prop->data.baton != NULL); | |
17761 | } | |
17762 | else if (attr_form_is_block (target_attr)) | |
17763 | { | |
8d749320 | 17764 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17765 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17766 | baton->locexpr.per_cu = cu->per_cu; |
17767 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17768 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17769 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17770 | prop->data.baton = baton; |
17771 | prop->kind = PROP_LOCEXPR; | |
17772 | gdb_assert (prop->data.baton != NULL); | |
17773 | } | |
17774 | else | |
17775 | { | |
17776 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17777 | "dynamic property"); | |
17778 | return 0; | |
17779 | } | |
17780 | break; | |
17781 | case DW_AT_data_member_location: | |
17782 | { | |
17783 | LONGEST offset; | |
17784 | ||
17785 | if (!handle_data_member_location (target_die, target_cu, | |
17786 | &offset)) | |
17787 | return 0; | |
17788 | ||
8d749320 | 17789 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17790 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17791 | target_cu); |
df25ebbd JB |
17792 | baton->offset_info.offset = offset; |
17793 | baton->offset_info.type = die_type (target_die, target_cu); | |
17794 | prop->data.baton = baton; | |
17795 | prop->kind = PROP_ADDR_OFFSET; | |
17796 | break; | |
17797 | } | |
80180f79 SA |
17798 | } |
17799 | } | |
17800 | else if (attr_form_is_constant (attr)) | |
17801 | { | |
17802 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17803 | prop->kind = PROP_CONST; | |
17804 | } | |
17805 | else | |
17806 | { | |
17807 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17808 | dwarf2_name (die, cu)); | |
17809 | return 0; | |
17810 | } | |
17811 | ||
17812 | return 1; | |
17813 | } | |
17814 | ||
9a49df9d AB |
17815 | /* Find an integer type the same size as the address size given in the |
17816 | compilation unit header for PER_CU. UNSIGNED_P controls if the integer | |
17817 | is unsigned or not. */ | |
17818 | ||
17819 | static struct type * | |
17820 | dwarf2_per_cu_addr_sized_int_type (struct dwarf2_per_cu_data *per_cu, | |
17821 | bool unsigned_p) | |
17822 | { | |
17823 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
17824 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
17825 | struct type *int_type; | |
17826 | ||
17827 | /* Helper macro to examine the various builtin types. */ | |
17828 | #define TRY_TYPE(F) \ | |
17829 | int_type = (unsigned_p \ | |
17830 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17831 | : objfile_type (objfile)->builtin_ ## F); \ | |
17832 | if (int_type != NULL && TYPE_LENGTH (int_type) == addr_size) \ | |
17833 | return int_type | |
17834 | ||
17835 | TRY_TYPE (char); | |
17836 | TRY_TYPE (short); | |
17837 | TRY_TYPE (int); | |
17838 | TRY_TYPE (long); | |
17839 | TRY_TYPE (long_long); | |
17840 | ||
17841 | #undef TRY_TYPE | |
17842 | ||
17843 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17844 | } | |
17845 | ||
b86352cf AB |
17846 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17847 | present (which is valid) then compute the default type based on the | |
17848 | compilation units address size. */ | |
17849 | ||
17850 | static struct type * | |
17851 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17852 | { | |
17853 | struct type *index_type = die_type (die, cu); | |
17854 | ||
17855 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17856 | without specifying a base type. | |
17857 | In that case, the base type must be set to the type of | |
17858 | the lower bound, upper bound or count, in that order, if any of these | |
17859 | three attributes references an object that has a type. | |
17860 | If no base type is found, the Dwarf-2 specifications say that | |
17861 | a signed integer type of size equal to the size of an address should | |
17862 | be used. | |
17863 | For the following C code: `extern char gdb_int [];' | |
17864 | GCC produces an empty range DIE. | |
17865 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17866 | high bound or count are not yet handled by this code. */ | |
17867 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
9a49df9d | 17868 | index_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); |
b86352cf AB |
17869 | |
17870 | return index_type; | |
17871 | } | |
17872 | ||
a02abb62 JB |
17873 | /* Read the given DW_AT_subrange DIE. */ |
17874 | ||
f792889a | 17875 | static struct type * |
a02abb62 JB |
17876 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17877 | { | |
4c9ad8c2 | 17878 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17879 | struct type *range_type; |
17880 | struct attribute *attr; | |
729efb13 | 17881 | struct dynamic_prop low, high; |
4fae6e18 | 17882 | int low_default_is_valid; |
c451ebe5 | 17883 | int high_bound_is_count = 0; |
15d034d0 | 17884 | const char *name; |
d359392f | 17885 | ULONGEST negative_mask; |
e77813c8 | 17886 | |
b86352cf AB |
17887 | orig_base_type = read_subrange_index_type (die, cu); |
17888 | ||
4c9ad8c2 TT |
17889 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17890 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17891 | creating the range type, but we use the result of check_typedef | |
17892 | when examining properties of the type. */ | |
17893 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17894 | |
7e314c57 JK |
17895 | /* The die_type call above may have already set the type for this DIE. */ |
17896 | range_type = get_die_type (die, cu); | |
17897 | if (range_type) | |
17898 | return range_type; | |
17899 | ||
729efb13 SA |
17900 | low.kind = PROP_CONST; |
17901 | high.kind = PROP_CONST; | |
17902 | high.data.const_val = 0; | |
17903 | ||
4fae6e18 JK |
17904 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17905 | omitting DW_AT_lower_bound. */ | |
17906 | switch (cu->language) | |
6e70227d | 17907 | { |
4fae6e18 JK |
17908 | case language_c: |
17909 | case language_cplus: | |
729efb13 | 17910 | low.data.const_val = 0; |
4fae6e18 JK |
17911 | low_default_is_valid = 1; |
17912 | break; | |
17913 | case language_fortran: | |
729efb13 | 17914 | low.data.const_val = 1; |
4fae6e18 JK |
17915 | low_default_is_valid = 1; |
17916 | break; | |
17917 | case language_d: | |
4fae6e18 | 17918 | case language_objc: |
c44af4eb | 17919 | case language_rust: |
729efb13 | 17920 | low.data.const_val = 0; |
4fae6e18 JK |
17921 | low_default_is_valid = (cu->header.version >= 4); |
17922 | break; | |
17923 | case language_ada: | |
17924 | case language_m2: | |
17925 | case language_pascal: | |
729efb13 | 17926 | low.data.const_val = 1; |
4fae6e18 JK |
17927 | low_default_is_valid = (cu->header.version >= 4); |
17928 | break; | |
17929 | default: | |
729efb13 | 17930 | low.data.const_val = 0; |
4fae6e18 JK |
17931 | low_default_is_valid = 0; |
17932 | break; | |
a02abb62 JB |
17933 | } |
17934 | ||
e142c38c | 17935 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17936 | if (attr) |
9a49df9d | 17937 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17938 | else if (!low_default_is_valid) |
b98664d3 | 17939 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17940 | "- DIE at %s [in module %s]"), |
17941 | sect_offset_str (die->sect_off), | |
518817b3 | 17942 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17943 | |
506f5c41 TV |
17944 | struct attribute *attr_ub, *attr_count; |
17945 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17946 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17947 | { |
506f5c41 | 17948 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17949 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17950 | { |
c451ebe5 SA |
17951 | /* If bounds are constant do the final calculation here. */ |
17952 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17953 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17954 | else | |
17955 | high_bound_is_count = 1; | |
c2ff108b | 17956 | } |
506f5c41 TV |
17957 | else |
17958 | { | |
17959 | if (attr_ub != NULL) | |
17960 | complaint (_("Unresolved DW_AT_upper_bound " | |
17961 | "- DIE at %s [in module %s]"), | |
17962 | sect_offset_str (die->sect_off), | |
17963 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17964 | if (attr_count != NULL) | |
17965 | complaint (_("Unresolved DW_AT_count " | |
17966 | "- DIE at %s [in module %s]"), | |
17967 | sect_offset_str (die->sect_off), | |
17968 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17969 | } | |
e77813c8 | 17970 | } |
a02abb62 | 17971 | |
4e962e74 TT |
17972 | LONGEST bias = 0; |
17973 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
17974 | if (bias_attr != nullptr && attr_form_is_constant (bias_attr)) | |
17975 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); | |
17976 | ||
dbb9c2b1 JB |
17977 | /* Normally, the DWARF producers are expected to use a signed |
17978 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17979 | But this is unfortunately not always the case, as witnessed | |
17980 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17981 | is used instead. To work around that ambiguity, we treat | |
17982 | the bounds as signed, and thus sign-extend their values, when | |
17983 | the base type is signed. */ | |
6e70227d | 17984 | negative_mask = |
d359392f | 17985 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17986 | if (low.kind == PROP_CONST |
17987 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17988 | low.data.const_val |= negative_mask; | |
17989 | if (high.kind == PROP_CONST | |
17990 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17991 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17992 | |
4e962e74 | 17993 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); |
a02abb62 | 17994 | |
c451ebe5 SA |
17995 | if (high_bound_is_count) |
17996 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17997 | ||
c2ff108b JK |
17998 | /* Ada expects an empty array on no boundary attributes. */ |
17999 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 18000 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18001 | |
39cbfefa DJ |
18002 | name = dwarf2_name (die, cu); |
18003 | if (name) | |
18004 | TYPE_NAME (range_type) = name; | |
6e70227d | 18005 | |
e142c38c | 18006 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
18007 | if (attr) |
18008 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
18009 | ||
2b4424c3 TT |
18010 | maybe_set_alignment (cu, die, range_type); |
18011 | ||
7e314c57 JK |
18012 | set_die_type (die, range_type, cu); |
18013 | ||
18014 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18015 | set_descriptive_type (range_type, die, cu); |
18016 | ||
7e314c57 | 18017 | return range_type; |
a02abb62 | 18018 | } |
6e70227d | 18019 | |
f792889a | 18020 | static struct type * |
81a17f79 JB |
18021 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18022 | { | |
18023 | struct type *type; | |
81a17f79 | 18024 | |
518817b3 SM |
18025 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18026 | NULL); | |
0114d602 | 18027 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18028 | |
74a2f8ff JB |
18029 | /* In Ada, an unspecified type is typically used when the description |
18030 | of the type is defered to a different unit. When encountering | |
18031 | such a type, we treat it as a stub, and try to resolve it later on, | |
18032 | when needed. */ | |
18033 | if (cu->language == language_ada) | |
18034 | TYPE_STUB (type) = 1; | |
18035 | ||
f792889a | 18036 | return set_die_type (die, type, cu); |
81a17f79 | 18037 | } |
a02abb62 | 18038 | |
639d11d3 DC |
18039 | /* Read a single die and all its descendents. Set the die's sibling |
18040 | field to NULL; set other fields in the die correctly, and set all | |
18041 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18042 | location of the info_ptr after reading all of those dies. PARENT | |
18043 | is the parent of the die in question. */ | |
18044 | ||
18045 | static struct die_info * | |
dee91e82 | 18046 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18047 | const gdb_byte *info_ptr, |
18048 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18049 | struct die_info *parent) |
639d11d3 DC |
18050 | { |
18051 | struct die_info *die; | |
d521ce57 | 18052 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18053 | int has_children; |
18054 | ||
bf6af496 | 18055 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18056 | if (die == NULL) |
18057 | { | |
18058 | *new_info_ptr = cur_ptr; | |
18059 | return NULL; | |
18060 | } | |
93311388 | 18061 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18062 | |
18063 | if (has_children) | |
bf6af496 | 18064 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18065 | else |
18066 | { | |
18067 | die->child = NULL; | |
18068 | *new_info_ptr = cur_ptr; | |
18069 | } | |
18070 | ||
18071 | die->sibling = NULL; | |
18072 | die->parent = parent; | |
18073 | return die; | |
18074 | } | |
18075 | ||
18076 | /* Read a die, all of its descendents, and all of its siblings; set | |
18077 | all of the fields of all of the dies correctly. Arguments are as | |
18078 | in read_die_and_children. */ | |
18079 | ||
18080 | static struct die_info * | |
bf6af496 | 18081 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18082 | const gdb_byte *info_ptr, |
18083 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18084 | struct die_info *parent) |
639d11d3 DC |
18085 | { |
18086 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18087 | const gdb_byte *cur_ptr; |
639d11d3 | 18088 | |
c906108c | 18089 | cur_ptr = info_ptr; |
639d11d3 DC |
18090 | first_die = last_sibling = NULL; |
18091 | ||
18092 | while (1) | |
c906108c | 18093 | { |
639d11d3 | 18094 | struct die_info *die |
dee91e82 | 18095 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18096 | |
1d325ec1 | 18097 | if (die == NULL) |
c906108c | 18098 | { |
639d11d3 DC |
18099 | *new_info_ptr = cur_ptr; |
18100 | return first_die; | |
c906108c | 18101 | } |
1d325ec1 DJ |
18102 | |
18103 | if (!first_die) | |
18104 | first_die = die; | |
c906108c | 18105 | else |
1d325ec1 DJ |
18106 | last_sibling->sibling = die; |
18107 | ||
18108 | last_sibling = die; | |
c906108c | 18109 | } |
c906108c SS |
18110 | } |
18111 | ||
bf6af496 DE |
18112 | /* Read a die, all of its descendents, and all of its siblings; set |
18113 | all of the fields of all of the dies correctly. Arguments are as | |
18114 | in read_die_and_children. | |
18115 | This the main entry point for reading a DIE and all its children. */ | |
18116 | ||
18117 | static struct die_info * | |
18118 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18119 | const gdb_byte *info_ptr, |
18120 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18121 | struct die_info *parent) |
18122 | { | |
18123 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18124 | new_info_ptr, parent); | |
18125 | ||
b4f54984 | 18126 | if (dwarf_die_debug) |
bf6af496 DE |
18127 | { |
18128 | fprintf_unfiltered (gdb_stdlog, | |
18129 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18130 | get_section_name (reader->die_section), |
bf6af496 DE |
18131 | (unsigned) (info_ptr - reader->die_section->buffer), |
18132 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18133 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18134 | } |
18135 | ||
18136 | return die; | |
18137 | } | |
18138 | ||
3019eac3 DE |
18139 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18140 | attributes. | |
18141 | The caller is responsible for filling in the extra attributes | |
18142 | and updating (*DIEP)->num_attrs. | |
18143 | Set DIEP to point to a newly allocated die with its information, | |
18144 | except for its child, sibling, and parent fields. | |
18145 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18146 | |
d521ce57 | 18147 | static const gdb_byte * |
3019eac3 | 18148 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18149 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18150 | int *has_children, int num_extra_attrs) |
93311388 | 18151 | { |
b64f50a1 | 18152 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18153 | struct abbrev_info *abbrev; |
18154 | struct die_info *die; | |
18155 | struct dwarf2_cu *cu = reader->cu; | |
18156 | bfd *abfd = reader->abfd; | |
18157 | ||
9c541725 | 18158 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18159 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18160 | info_ptr += bytes_read; | |
18161 | if (!abbrev_number) | |
18162 | { | |
18163 | *diep = NULL; | |
18164 | *has_children = 0; | |
18165 | return info_ptr; | |
18166 | } | |
18167 | ||
685af9cd | 18168 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18169 | if (!abbrev) |
348e048f DE |
18170 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18171 | abbrev_number, | |
18172 | bfd_get_filename (abfd)); | |
18173 | ||
3019eac3 | 18174 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18175 | die->sect_off = sect_off; |
93311388 DE |
18176 | die->tag = abbrev->tag; |
18177 | die->abbrev = abbrev_number; | |
18178 | ||
3019eac3 DE |
18179 | /* Make the result usable. |
18180 | The caller needs to update num_attrs after adding the extra | |
18181 | attributes. */ | |
93311388 DE |
18182 | die->num_attrs = abbrev->num_attrs; |
18183 | ||
18184 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18185 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18186 | info_ptr); | |
93311388 DE |
18187 | |
18188 | *diep = die; | |
18189 | *has_children = abbrev->has_children; | |
18190 | return info_ptr; | |
18191 | } | |
18192 | ||
3019eac3 DE |
18193 | /* Read a die and all its attributes. |
18194 | Set DIEP to point to a newly allocated die with its information, | |
18195 | except for its child, sibling, and parent fields. | |
18196 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18197 | ||
d521ce57 | 18198 | static const gdb_byte * |
3019eac3 | 18199 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18200 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18201 | int *has_children) |
18202 | { | |
d521ce57 | 18203 | const gdb_byte *result; |
bf6af496 DE |
18204 | |
18205 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18206 | ||
b4f54984 | 18207 | if (dwarf_die_debug) |
bf6af496 DE |
18208 | { |
18209 | fprintf_unfiltered (gdb_stdlog, | |
18210 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18211 | get_section_name (reader->die_section), |
bf6af496 DE |
18212 | (unsigned) (info_ptr - reader->die_section->buffer), |
18213 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18214 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18215 | } |
18216 | ||
18217 | return result; | |
3019eac3 | 18218 | } |
433df2d4 DE |
18219 | \f |
18220 | /* Abbreviation tables. | |
3019eac3 | 18221 | |
433df2d4 | 18222 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18223 | stored in a separate .debug_abbrev section. Before we read any |
18224 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18225 | in a hash table. */ |
18226 | ||
18227 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18228 | ||
685af9cd TT |
18229 | struct abbrev_info * |
18230 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18231 | { |
18232 | struct abbrev_info *abbrev; | |
18233 | ||
685af9cd | 18234 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18235 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18236 | |
433df2d4 DE |
18237 | return abbrev; |
18238 | } | |
18239 | ||
18240 | /* Add an abbreviation to the table. */ | |
c906108c | 18241 | |
685af9cd TT |
18242 | void |
18243 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18244 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18245 | { |
18246 | unsigned int hash_number; | |
18247 | ||
18248 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18249 | abbrev->next = m_abbrevs[hash_number]; |
18250 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18251 | } |
dee91e82 | 18252 | |
433df2d4 DE |
18253 | /* Look up an abbrev in the table. |
18254 | Returns NULL if the abbrev is not found. */ | |
18255 | ||
685af9cd TT |
18256 | struct abbrev_info * |
18257 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18258 | { |
433df2d4 DE |
18259 | unsigned int hash_number; |
18260 | struct abbrev_info *abbrev; | |
18261 | ||
18262 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18263 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18264 | |
18265 | while (abbrev) | |
18266 | { | |
18267 | if (abbrev->number == abbrev_number) | |
18268 | return abbrev; | |
18269 | abbrev = abbrev->next; | |
18270 | } | |
18271 | return NULL; | |
18272 | } | |
18273 | ||
18274 | /* Read in an abbrev table. */ | |
18275 | ||
685af9cd | 18276 | static abbrev_table_up |
ed2dc618 SM |
18277 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18278 | struct dwarf2_section_info *section, | |
9c541725 | 18279 | sect_offset sect_off) |
433df2d4 DE |
18280 | { |
18281 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18282 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18283 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18284 | struct abbrev_info *cur_abbrev; |
18285 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18286 | unsigned int abbrev_form; |
f3dd6933 DJ |
18287 | struct attr_abbrev *cur_attrs; |
18288 | unsigned int allocated_attrs; | |
c906108c | 18289 | |
685af9cd | 18290 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18291 | |
433df2d4 | 18292 | dwarf2_read_section (objfile, section); |
9c541725 | 18293 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18294 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18295 | abbrev_ptr += bytes_read; | |
18296 | ||
f3dd6933 | 18297 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18298 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18299 | |
0963b4bd | 18300 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18301 | while (abbrev_number) |
18302 | { | |
685af9cd | 18303 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18304 | |
18305 | /* read in abbrev header */ | |
18306 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18307 | cur_abbrev->tag |
18308 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18309 | abbrev_ptr += bytes_read; |
18310 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18311 | abbrev_ptr += 1; | |
18312 | ||
18313 | /* now read in declarations */ | |
22d2f3ab | 18314 | for (;;) |
c906108c | 18315 | { |
43988095 JK |
18316 | LONGEST implicit_const; |
18317 | ||
22d2f3ab JK |
18318 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18319 | abbrev_ptr += bytes_read; | |
18320 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18321 | abbrev_ptr += bytes_read; | |
43988095 JK |
18322 | if (abbrev_form == DW_FORM_implicit_const) |
18323 | { | |
18324 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18325 | &bytes_read); | |
18326 | abbrev_ptr += bytes_read; | |
18327 | } | |
18328 | else | |
18329 | { | |
18330 | /* Initialize it due to a false compiler warning. */ | |
18331 | implicit_const = -1; | |
18332 | } | |
22d2f3ab JK |
18333 | |
18334 | if (abbrev_name == 0) | |
18335 | break; | |
18336 | ||
f3dd6933 | 18337 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18338 | { |
f3dd6933 DJ |
18339 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18340 | cur_attrs | |
224c3ddb | 18341 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18342 | } |
ae038cb0 | 18343 | |
aead7601 SM |
18344 | cur_attrs[cur_abbrev->num_attrs].name |
18345 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18346 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18347 | = (enum dwarf_form) abbrev_form; |
43988095 | 18348 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18349 | ++cur_abbrev->num_attrs; |
c906108c SS |
18350 | } |
18351 | ||
8d749320 SM |
18352 | cur_abbrev->attrs = |
18353 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18354 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18355 | memcpy (cur_abbrev->attrs, cur_attrs, |
18356 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18357 | ||
685af9cd | 18358 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18359 | |
18360 | /* Get next abbreviation. | |
18361 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18362 | always properly terminated with an abbrev number of 0. |
18363 | Exit loop if we encounter an abbreviation which we have | |
18364 | already read (which means we are about to read the abbreviations | |
18365 | for the next compile unit) or if the end of the abbreviation | |
18366 | table is reached. */ | |
433df2d4 | 18367 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18368 | break; |
18369 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18370 | abbrev_ptr += bytes_read; | |
685af9cd | 18371 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18372 | break; |
18373 | } | |
f3dd6933 DJ |
18374 | |
18375 | xfree (cur_attrs); | |
433df2d4 | 18376 | return abbrev_table; |
c906108c SS |
18377 | } |
18378 | ||
72bf9492 DJ |
18379 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18380 | symbol for. */ | |
18381 | ||
18382 | static int | |
18383 | is_type_tag_for_partial (int tag) | |
18384 | { | |
18385 | switch (tag) | |
18386 | { | |
18387 | #if 0 | |
18388 | /* Some types that would be reasonable to generate partial symbols for, | |
18389 | that we don't at present. */ | |
18390 | case DW_TAG_array_type: | |
18391 | case DW_TAG_file_type: | |
18392 | case DW_TAG_ptr_to_member_type: | |
18393 | case DW_TAG_set_type: | |
18394 | case DW_TAG_string_type: | |
18395 | case DW_TAG_subroutine_type: | |
18396 | #endif | |
18397 | case DW_TAG_base_type: | |
18398 | case DW_TAG_class_type: | |
680b30c7 | 18399 | case DW_TAG_interface_type: |
72bf9492 DJ |
18400 | case DW_TAG_enumeration_type: |
18401 | case DW_TAG_structure_type: | |
18402 | case DW_TAG_subrange_type: | |
18403 | case DW_TAG_typedef: | |
18404 | case DW_TAG_union_type: | |
18405 | return 1; | |
18406 | default: | |
18407 | return 0; | |
18408 | } | |
18409 | } | |
18410 | ||
18411 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18412 | ||
18413 | static struct partial_die_info * | |
dee91e82 | 18414 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18415 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18416 | { |
dee91e82 | 18417 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18418 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18419 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18420 | unsigned int bytes_read; |
5afb4e99 | 18421 | unsigned int load_all = 0; |
72bf9492 DJ |
18422 | int nesting_level = 1; |
18423 | ||
18424 | parent_die = NULL; | |
18425 | last_die = NULL; | |
18426 | ||
7adf1e79 DE |
18427 | gdb_assert (cu->per_cu != NULL); |
18428 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18429 | load_all = 1; |
18430 | ||
72bf9492 DJ |
18431 | cu->partial_dies |
18432 | = htab_create_alloc_ex (cu->header.length / 12, | |
18433 | partial_die_hash, | |
18434 | partial_die_eq, | |
18435 | NULL, | |
18436 | &cu->comp_unit_obstack, | |
18437 | hashtab_obstack_allocate, | |
18438 | dummy_obstack_deallocate); | |
18439 | ||
72bf9492 DJ |
18440 | while (1) |
18441 | { | |
685af9cd | 18442 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18443 | |
18444 | /* A NULL abbrev means the end of a series of children. */ | |
18445 | if (abbrev == NULL) | |
18446 | { | |
18447 | if (--nesting_level == 0) | |
cd9983dd YQ |
18448 | return first_die; |
18449 | ||
72bf9492 DJ |
18450 | info_ptr += bytes_read; |
18451 | last_die = parent_die; | |
18452 | parent_die = parent_die->die_parent; | |
18453 | continue; | |
18454 | } | |
18455 | ||
98bfdba5 PA |
18456 | /* Check for template arguments. We never save these; if |
18457 | they're seen, we just mark the parent, and go on our way. */ | |
18458 | if (parent_die != NULL | |
18459 | && cu->language == language_cplus | |
18460 | && (abbrev->tag == DW_TAG_template_type_param | |
18461 | || abbrev->tag == DW_TAG_template_value_param)) | |
18462 | { | |
18463 | parent_die->has_template_arguments = 1; | |
18464 | ||
18465 | if (!load_all) | |
18466 | { | |
18467 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18468 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18469 | continue; |
18470 | } | |
18471 | } | |
18472 | ||
0d99eb77 | 18473 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18474 | Skip their other children. */ |
18475 | if (!load_all | |
18476 | && cu->language == language_cplus | |
18477 | && parent_die != NULL | |
18478 | && parent_die->tag == DW_TAG_subprogram) | |
18479 | { | |
dee91e82 | 18480 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18481 | continue; |
18482 | } | |
18483 | ||
5afb4e99 DJ |
18484 | /* Check whether this DIE is interesting enough to save. Normally |
18485 | we would not be interested in members here, but there may be | |
18486 | later variables referencing them via DW_AT_specification (for | |
18487 | static members). */ | |
18488 | if (!load_all | |
18489 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18490 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18491 | && abbrev->tag != DW_TAG_enumerator |
18492 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18493 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18494 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18495 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18496 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18497 | && abbrev->tag != DW_TAG_module |
95554aad | 18498 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18499 | && abbrev->tag != DW_TAG_imported_unit |
18500 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18501 | { |
18502 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18503 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18504 | continue; |
18505 | } | |
18506 | ||
6f06d47b YQ |
18507 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18508 | abbrev); | |
cd9983dd | 18509 | |
48fbe735 | 18510 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18511 | |
18512 | /* This two-pass algorithm for processing partial symbols has a | |
18513 | high cost in cache pressure. Thus, handle some simple cases | |
18514 | here which cover the majority of C partial symbols. DIEs | |
18515 | which neither have specification tags in them, nor could have | |
18516 | specification tags elsewhere pointing at them, can simply be | |
18517 | processed and discarded. | |
18518 | ||
18519 | This segment is also optional; scan_partial_symbols and | |
18520 | add_partial_symbol will handle these DIEs if we chain | |
18521 | them in normally. When compilers which do not emit large | |
18522 | quantities of duplicate debug information are more common, | |
18523 | this code can probably be removed. */ | |
18524 | ||
18525 | /* Any complete simple types at the top level (pretty much all | |
18526 | of them, for a language without namespaces), can be processed | |
18527 | directly. */ | |
18528 | if (parent_die == NULL | |
cd9983dd YQ |
18529 | && pdi.has_specification == 0 |
18530 | && pdi.is_declaration == 0 | |
18531 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18532 | || pdi.tag == DW_TAG_base_type | |
18533 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18534 | { |
cd9983dd | 18535 | if (building_psymtab && pdi.name != NULL) |
67547d89 | 18536 | add_psymbol_to_list (pdi.name, strlen (pdi.name), false, |
79748972 | 18537 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18538 | psymbol_placement::STATIC, |
1762568f | 18539 | 0, cu->language, objfile); |
cd9983dd | 18540 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18541 | continue; |
18542 | } | |
18543 | ||
d8228535 JK |
18544 | /* The exception for DW_TAG_typedef with has_children above is |
18545 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18546 | type_name_or_error will error on such types later. |
d8228535 JK |
18547 | |
18548 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18549 | it could not find the child DIEs referenced later, this is checked | |
18550 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18551 | ||
cd9983dd | 18552 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18553 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18554 | "- DIE at %s [in module %s]"), |
cd9983dd | 18555 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18556 | |
72bf9492 DJ |
18557 | /* If we're at the second level, and we're an enumerator, and |
18558 | our parent has no specification (meaning possibly lives in a | |
18559 | namespace elsewhere), then we can add the partial symbol now | |
18560 | instead of queueing it. */ | |
cd9983dd | 18561 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18562 | && parent_die != NULL |
18563 | && parent_die->die_parent == NULL | |
18564 | && parent_die->tag == DW_TAG_enumeration_type | |
18565 | && parent_die->has_specification == 0) | |
18566 | { | |
cd9983dd | 18567 | if (pdi.name == NULL) |
b98664d3 | 18568 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18569 | else if (building_psymtab) |
67547d89 | 18570 | add_psymbol_to_list (pdi.name, strlen (pdi.name), false, |
79748972 | 18571 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18572 | cu->language == language_cplus |
75aedd27 TT |
18573 | ? psymbol_placement::GLOBAL |
18574 | : psymbol_placement::STATIC, | |
1762568f | 18575 | 0, cu->language, objfile); |
72bf9492 | 18576 | |
cd9983dd | 18577 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18578 | continue; |
18579 | } | |
18580 | ||
cd9983dd | 18581 | struct partial_die_info *part_die |
6f06d47b | 18582 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18583 | |
72bf9492 DJ |
18584 | /* We'll save this DIE so link it in. */ |
18585 | part_die->die_parent = parent_die; | |
18586 | part_die->die_sibling = NULL; | |
18587 | part_die->die_child = NULL; | |
18588 | ||
18589 | if (last_die && last_die == parent_die) | |
18590 | last_die->die_child = part_die; | |
18591 | else if (last_die) | |
18592 | last_die->die_sibling = part_die; | |
18593 | ||
18594 | last_die = part_die; | |
18595 | ||
18596 | if (first_die == NULL) | |
18597 | first_die = part_die; | |
18598 | ||
18599 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18600 | find interesting need to be in the hash table, because we | |
18601 | also have the parent/sibling/child chains; only those that we | |
18602 | might refer to by offset later during partial symbol reading. | |
18603 | ||
18604 | For now this means things that might have be the target of a | |
18605 | DW_AT_specification, DW_AT_abstract_origin, or | |
18606 | DW_AT_extension. DW_AT_extension will refer only to | |
18607 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18608 | many things under the function DIE, but we do not recurse | |
18609 | into function DIEs during partial symbol reading) and | |
18610 | possibly variables as well; DW_AT_specification refers to | |
18611 | declarations. Declarations ought to have the DW_AT_declaration | |
18612 | flag. It happens that GCC forgets to put it in sometimes, but | |
18613 | only for functions, not for types. | |
18614 | ||
18615 | Adding more things than necessary to the hash table is harmless | |
18616 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18617 | wasted time in find_partial_die, when we reread the compilation |
18618 | unit with load_all_dies set. */ | |
72bf9492 | 18619 | |
5afb4e99 | 18620 | if (load_all |
72929c62 | 18621 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18622 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18623 | || abbrev->tag == DW_TAG_variable |
18624 | || abbrev->tag == DW_TAG_namespace | |
18625 | || part_die->is_declaration) | |
18626 | { | |
18627 | void **slot; | |
18628 | ||
18629 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18630 | to_underlying (part_die->sect_off), |
18631 | INSERT); | |
72bf9492 DJ |
18632 | *slot = part_die; |
18633 | } | |
18634 | ||
72bf9492 | 18635 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18636 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18637 | languages we have to, so that we can get at method physnames |
18638 | to infer fully qualified class names, for DW_AT_specification, | |
18639 | and for C++ template arguments. For C++, we also look one level | |
18640 | inside functions to find template arguments (if the name of the | |
18641 | function does not already contain the template arguments). | |
bc30ff58 JB |
18642 | |
18643 | For Ada, we need to scan the children of subprograms and lexical | |
18644 | blocks as well because Ada allows the definition of nested | |
18645 | entities that could be interesting for the debugger, such as | |
18646 | nested subprograms for instance. */ | |
72bf9492 | 18647 | if (last_die->has_children |
5afb4e99 DJ |
18648 | && (load_all |
18649 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18650 | || last_die->tag == DW_TAG_module |
72bf9492 | 18651 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18652 | || (cu->language == language_cplus |
18653 | && last_die->tag == DW_TAG_subprogram | |
18654 | && (last_die->name == NULL | |
18655 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18656 | || (cu->language != language_c |
18657 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18658 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18659 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18660 | || last_die->tag == DW_TAG_union_type)) |
18661 | || (cu->language == language_ada | |
18662 | && (last_die->tag == DW_TAG_subprogram | |
18663 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18664 | { |
18665 | nesting_level++; | |
18666 | parent_die = last_die; | |
18667 | continue; | |
18668 | } | |
18669 | ||
18670 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18671 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18672 | |
18673 | /* Back to the top, do it again. */ | |
18674 | } | |
18675 | } | |
18676 | ||
6f06d47b YQ |
18677 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18678 | struct abbrev_info *abbrev) | |
18679 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18680 | { | |
18681 | } | |
18682 | ||
35cc7ed7 YQ |
18683 | /* Read a minimal amount of information into the minimal die structure. |
18684 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18685 | |
48fbe735 YQ |
18686 | const gdb_byte * |
18687 | partial_die_info::read (const struct die_reader_specs *reader, | |
18688 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18689 | { |
dee91e82 | 18690 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18691 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18692 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18693 | unsigned int i; |
c5aa993b | 18694 | int has_low_pc_attr = 0; |
c906108c | 18695 | int has_high_pc_attr = 0; |
91da1414 | 18696 | int high_pc_relative = 0; |
c906108c | 18697 | |
fd0a254f | 18698 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18699 | { |
48fbe735 YQ |
18700 | struct attribute attr; |
18701 | ||
fd0a254f | 18702 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18703 | |
18704 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18705 | partial symbol table. */ |
c906108c SS |
18706 | switch (attr.name) |
18707 | { | |
18708 | case DW_AT_name: | |
48fbe735 | 18709 | switch (tag) |
71c25dea TT |
18710 | { |
18711 | case DW_TAG_compile_unit: | |
95554aad | 18712 | case DW_TAG_partial_unit: |
348e048f | 18713 | case DW_TAG_type_unit: |
71c25dea TT |
18714 | /* Compilation units have a DW_AT_name that is a filename, not |
18715 | a source language identifier. */ | |
18716 | case DW_TAG_enumeration_type: | |
18717 | case DW_TAG_enumerator: | |
18718 | /* These tags always have simple identifiers already; no need | |
18719 | to canonicalize them. */ | |
48fbe735 | 18720 | name = DW_STRING (&attr); |
71c25dea TT |
18721 | break; |
18722 | default: | |
48fbe735 YQ |
18723 | { |
18724 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18725 | ||
18726 | name | |
18727 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18728 | &objfile->per_bfd->storage_obstack); | |
18729 | } | |
71c25dea TT |
18730 | break; |
18731 | } | |
c906108c | 18732 | break; |
31ef98ae | 18733 | case DW_AT_linkage_name: |
c906108c | 18734 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18735 | /* Note that both forms of linkage name might appear. We |
18736 | assume they will be the same, and we only store the last | |
18737 | one we see. */ | |
48fbe735 | 18738 | linkage_name = DW_STRING (&attr); |
c906108c SS |
18739 | break; |
18740 | case DW_AT_low_pc: | |
18741 | has_low_pc_attr = 1; | |
48fbe735 | 18742 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18743 | break; |
18744 | case DW_AT_high_pc: | |
18745 | has_high_pc_attr = 1; | |
48fbe735 | 18746 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18747 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18748 | high_pc_relative = 1; | |
c906108c SS |
18749 | break; |
18750 | case DW_AT_location: | |
0963b4bd | 18751 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18752 | if (attr_form_is_block (&attr)) |
18753 | { | |
48fbe735 | 18754 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18755 | } |
3690dd37 | 18756 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18757 | { |
4d3c2250 | 18758 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18759 | } |
18760 | else | |
18761 | { | |
4d3c2250 KB |
18762 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18763 | "partial symbol information"); | |
8e19ed76 | 18764 | } |
c906108c | 18765 | break; |
c906108c | 18766 | case DW_AT_external: |
48fbe735 | 18767 | is_external = DW_UNSND (&attr); |
c906108c SS |
18768 | break; |
18769 | case DW_AT_declaration: | |
48fbe735 | 18770 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18771 | break; |
18772 | case DW_AT_type: | |
48fbe735 | 18773 | has_type = 1; |
c906108c SS |
18774 | break; |
18775 | case DW_AT_abstract_origin: | |
18776 | case DW_AT_specification: | |
72bf9492 | 18777 | case DW_AT_extension: |
48fbe735 YQ |
18778 | has_specification = 1; |
18779 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18780 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18781 | || cu->per_cu->is_dwz); |
c906108c SS |
18782 | break; |
18783 | case DW_AT_sibling: | |
18784 | /* Ignore absolute siblings, they might point outside of | |
18785 | the current compile unit. */ | |
18786 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18787 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18788 | else |
b9502d3f | 18789 | { |
48fbe735 | 18790 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18791 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18792 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18793 | |
18794 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18795 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18796 | else if (sibling_ptr > reader->buffer_end) |
18797 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18798 | else |
48fbe735 | 18799 | sibling = sibling_ptr; |
b9502d3f | 18800 | } |
c906108c | 18801 | break; |
fa4028e9 | 18802 | case DW_AT_byte_size: |
48fbe735 | 18803 | has_byte_size = 1; |
fa4028e9 | 18804 | break; |
ff908ebf | 18805 | case DW_AT_const_value: |
48fbe735 | 18806 | has_const_value = 1; |
ff908ebf | 18807 | break; |
68511cec CES |
18808 | case DW_AT_calling_convention: |
18809 | /* DWARF doesn't provide a way to identify a program's source-level | |
18810 | entry point. DW_AT_calling_convention attributes are only meant | |
18811 | to describe functions' calling conventions. | |
18812 | ||
18813 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18814 | Fortran, and before DWARF 4 DW_CC_program was the only |
18815 | piece of debugging information whose definition refers to | |
18816 | a 'main program' at all, several compilers marked Fortran | |
18817 | main programs with DW_CC_program --- even when those | |
18818 | functions use the standard calling conventions. | |
18819 | ||
18820 | Although DWARF now specifies a way to provide this | |
18821 | information, we support this practice for backward | |
18822 | compatibility. */ | |
68511cec | 18823 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18824 | && cu->language == language_fortran) |
48fbe735 | 18825 | main_subprogram = 1; |
68511cec | 18826 | break; |
481860b3 GB |
18827 | case DW_AT_inline: |
18828 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18829 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18830 | may_be_inlined = 1; |
481860b3 | 18831 | break; |
95554aad TT |
18832 | |
18833 | case DW_AT_import: | |
48fbe735 | 18834 | if (tag == DW_TAG_imported_unit) |
36586728 | 18835 | { |
48fbe735 YQ |
18836 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18837 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18838 | || cu->per_cu->is_dwz); |
18839 | } | |
95554aad TT |
18840 | break; |
18841 | ||
0c1b455e | 18842 | case DW_AT_main_subprogram: |
48fbe735 | 18843 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18844 | break; |
18845 | ||
05caa1d2 TT |
18846 | case DW_AT_ranges: |
18847 | { | |
18848 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18849 | but that requires a full DIE, so instead we just | |
18850 | reimplement it. */ | |
18851 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18852 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18853 | + (need_ranges_base | |
18854 | ? cu->ranges_base | |
18855 | : 0)); | |
18856 | ||
18857 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18858 | .debug_ranges section. */ | |
18859 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18860 | nullptr)) | |
18861 | has_pc_info = 1; | |
18862 | } | |
18863 | break; | |
18864 | ||
c906108c SS |
18865 | default: |
18866 | break; | |
18867 | } | |
18868 | } | |
18869 | ||
10d06d82 TT |
18870 | /* For Ada, if both the name and the linkage name appear, we prefer |
18871 | the latter. This lets "catch exception" work better, regardless | |
18872 | of the order in which the name and linkage name were emitted. | |
18873 | Really, though, this is just a workaround for the fact that gdb | |
18874 | doesn't store both the name and the linkage name. */ | |
18875 | if (cu->language == language_ada && linkage_name != nullptr) | |
18876 | name = linkage_name; | |
18877 | ||
91da1414 | 18878 | if (high_pc_relative) |
48fbe735 | 18879 | highpc += lowpc; |
91da1414 | 18880 | |
9373cf26 JK |
18881 | if (has_low_pc_attr && has_high_pc_attr) |
18882 | { | |
18883 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18884 | eliminate duplicate copies of functions and vtables and such. | |
18885 | The linker will arbitrarily choose one and discard the others. | |
18886 | The AT_*_pc values for such functions refer to local labels in | |
18887 | these sections. If the section from that file was discarded, the | |
18888 | labels are not in the output, so the relocs get a value of 0. | |
18889 | If this is a discarded function, mark the pc bounds as invalid, | |
18890 | so that GDB will ignore it. */ | |
48fbe735 | 18891 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18892 | { |
48fbe735 | 18893 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18894 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18895 | |
b98664d3 | 18896 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18897 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18898 | paddress (gdbarch, lowpc), |
18899 | sect_offset_str (sect_off), | |
9d8780f0 | 18900 | objfile_name (objfile)); |
9373cf26 JK |
18901 | } |
18902 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18903 | else if (lowpc >= highpc) |
9373cf26 | 18904 | { |
48fbe735 | 18905 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18906 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18907 | |
b98664d3 | 18908 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18909 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18910 | paddress (gdbarch, lowpc), |
18911 | paddress (gdbarch, highpc), | |
18912 | sect_offset_str (sect_off), | |
9c541725 | 18913 | objfile_name (objfile)); |
9373cf26 JK |
18914 | } |
18915 | else | |
48fbe735 | 18916 | has_pc_info = 1; |
9373cf26 | 18917 | } |
85cbf3d3 | 18918 | |
c906108c SS |
18919 | return info_ptr; |
18920 | } | |
18921 | ||
72bf9492 DJ |
18922 | /* Find a cached partial DIE at OFFSET in CU. */ |
18923 | ||
d590ff25 YQ |
18924 | struct partial_die_info * |
18925 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18926 | { |
18927 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18928 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18929 | |
9a3c8263 | 18930 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18931 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18932 | to_underlying (sect_off))); |
72bf9492 | 18933 | |
72bf9492 DJ |
18934 | return lookup_die; |
18935 | } | |
18936 | ||
348e048f DE |
18937 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18938 | except in the case of .debug_types DIEs which do not reference | |
18939 | outside their CU (they do however referencing other types via | |
55f1336d | 18940 | DW_FORM_ref_sig8). */ |
72bf9492 | 18941 | |
122cf0f2 | 18942 | static const struct cu_partial_die_info |
9c541725 | 18943 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18944 | { |
518817b3 SM |
18945 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18946 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18947 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18948 | struct dwarf2_per_cu_data *per_cu = NULL; |
18949 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18950 | |
36586728 | 18951 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18952 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18953 | { |
d590ff25 | 18954 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18955 | if (pd != NULL) |
fb816e8b | 18956 | return { cu, pd }; |
0d99eb77 DE |
18957 | /* We missed recording what we needed. |
18958 | Load all dies and try again. */ | |
18959 | per_cu = cu->per_cu; | |
5afb4e99 | 18960 | } |
0d99eb77 DE |
18961 | else |
18962 | { | |
18963 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18964 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18965 | { |
9d8780f0 SM |
18966 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18967 | " external reference to offset %s [in module %s].\n"), | |
18968 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18969 | bfd_get_filename (objfile->obfd)); |
18970 | } | |
9c541725 | 18971 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18972 | dwarf2_per_objfile); |
72bf9492 | 18973 | |
0d99eb77 DE |
18974 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18975 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18976 | |
0d99eb77 | 18977 | per_cu->cu->last_used = 0; |
d590ff25 | 18978 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18979 | } |
5afb4e99 | 18980 | |
dee91e82 DE |
18981 | /* If we didn't find it, and not all dies have been loaded, |
18982 | load them all and try again. */ | |
18983 | ||
5afb4e99 DJ |
18984 | if (pd == NULL && per_cu->load_all_dies == 0) |
18985 | { | |
5afb4e99 | 18986 | per_cu->load_all_dies = 1; |
fd820528 DE |
18987 | |
18988 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18989 | THIS_CU->cu may already be in use. So we can't just free it and | |
18990 | replace its DIEs with the ones we read in. Instead, we leave those | |
18991 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18992 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18993 | set. */ | |
dee91e82 | 18994 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18995 | |
d590ff25 | 18996 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18997 | } |
18998 | ||
18999 | if (pd == NULL) | |
19000 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 19001 | _("could not find partial DIE %s " |
3e43a32a | 19002 | "in cache [from module %s]\n"), |
9d8780f0 | 19003 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 19004 | return { per_cu->cu, pd }; |
72bf9492 DJ |
19005 | } |
19006 | ||
abc72ce4 DE |
19007 | /* See if we can figure out if the class lives in a namespace. We do |
19008 | this by looking for a member function; its demangled name will | |
19009 | contain namespace info, if there is any. */ | |
19010 | ||
19011 | static void | |
19012 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19013 | struct dwarf2_cu *cu) | |
19014 | { | |
19015 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19016 | what template types look like, because the demangler | |
19017 | frequently doesn't give the same name as the debug info. We | |
19018 | could fix this by only using the demangled name to get the | |
19019 | prefix (but see comment in read_structure_type). */ | |
19020 | ||
19021 | struct partial_die_info *real_pdi; | |
19022 | struct partial_die_info *child_pdi; | |
19023 | ||
19024 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19025 | we should not do this. We'll prepend the parent's fully qualified | |
19026 | name when we create the partial symbol. */ | |
19027 | ||
19028 | real_pdi = struct_pdi; | |
19029 | while (real_pdi->has_specification) | |
fb816e8b | 19030 | { |
122cf0f2 AB |
19031 | auto res = find_partial_die (real_pdi->spec_offset, |
19032 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19033 | real_pdi = res.pdi; |
19034 | cu = res.cu; | |
19035 | } | |
abc72ce4 DE |
19036 | |
19037 | if (real_pdi->die_parent != NULL) | |
19038 | return; | |
19039 | ||
19040 | for (child_pdi = struct_pdi->die_child; | |
19041 | child_pdi != NULL; | |
19042 | child_pdi = child_pdi->die_sibling) | |
19043 | { | |
19044 | if (child_pdi->tag == DW_TAG_subprogram | |
19045 | && child_pdi->linkage_name != NULL) | |
19046 | { | |
19047 | char *actual_class_name | |
19048 | = language_class_name_from_physname (cu->language_defn, | |
19049 | child_pdi->linkage_name); | |
19050 | if (actual_class_name != NULL) | |
19051 | { | |
518817b3 | 19052 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19053 | struct_pdi->name |
021887d8 TT |
19054 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
19055 | actual_class_name); | |
abc72ce4 DE |
19056 | xfree (actual_class_name); |
19057 | } | |
19058 | break; | |
19059 | } | |
19060 | } | |
19061 | } | |
19062 | ||
52356b79 YQ |
19063 | void |
19064 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19065 | { |
abc72ce4 DE |
19066 | /* Once we've fixed up a die, there's no point in doing so again. |
19067 | This also avoids a memory leak if we were to call | |
19068 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19069 | if (fixup_called) |
abc72ce4 DE |
19070 | return; |
19071 | ||
72bf9492 DJ |
19072 | /* If we found a reference attribute and the DIE has no name, try |
19073 | to find a name in the referred to DIE. */ | |
19074 | ||
52356b79 | 19075 | if (name == NULL && has_specification) |
72bf9492 DJ |
19076 | { |
19077 | struct partial_die_info *spec_die; | |
72bf9492 | 19078 | |
122cf0f2 | 19079 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19080 | spec_die = res.pdi; |
19081 | cu = res.cu; | |
72bf9492 | 19082 | |
52356b79 | 19083 | spec_die->fixup (cu); |
72bf9492 DJ |
19084 | |
19085 | if (spec_die->name) | |
19086 | { | |
52356b79 | 19087 | name = spec_die->name; |
72bf9492 DJ |
19088 | |
19089 | /* Copy DW_AT_external attribute if it is set. */ | |
19090 | if (spec_die->is_external) | |
52356b79 | 19091 | is_external = spec_die->is_external; |
72bf9492 DJ |
19092 | } |
19093 | } | |
19094 | ||
19095 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19096 | |
52356b79 YQ |
19097 | if (name == NULL && tag == DW_TAG_namespace) |
19098 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19099 | |
abc72ce4 DE |
19100 | /* If there is no parent die to provide a namespace, and there are |
19101 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19102 | name. */ |
abc72ce4 | 19103 | if (cu->language == language_cplus |
fd5866f6 | 19104 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
19105 | && die_parent == NULL |
19106 | && has_children | |
19107 | && (tag == DW_TAG_class_type | |
19108 | || tag == DW_TAG_structure_type | |
19109 | || tag == DW_TAG_union_type)) | |
19110 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19111 | |
53832f31 TT |
19112 | /* GCC might emit a nameless struct or union that has a linkage |
19113 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19114 | if (name == NULL |
19115 | && (tag == DW_TAG_class_type | |
19116 | || tag == DW_TAG_interface_type | |
19117 | || tag == DW_TAG_structure_type | |
19118 | || tag == DW_TAG_union_type) | |
19119 | && linkage_name != NULL) | |
53832f31 TT |
19120 | { |
19121 | char *demangled; | |
19122 | ||
52356b79 | 19123 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
19124 | if (demangled) |
19125 | { | |
96408a79 SA |
19126 | const char *base; |
19127 | ||
19128 | /* Strip any leading namespaces/classes, keep only the base name. | |
19129 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19130 | base = strrchr (demangled, ':'); | |
19131 | if (base && base > demangled && base[-1] == ':') | |
19132 | base++; | |
19133 | else | |
19134 | base = demangled; | |
19135 | ||
518817b3 | 19136 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 19137 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
19138 | xfree (demangled); |
19139 | } | |
19140 | } | |
19141 | ||
52356b79 | 19142 | fixup_called = 1; |
72bf9492 DJ |
19143 | } |
19144 | ||
a8329558 | 19145 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19146 | |
d521ce57 | 19147 | static const gdb_byte * |
dee91e82 DE |
19148 | read_attribute_value (const struct die_reader_specs *reader, |
19149 | struct attribute *attr, unsigned form, | |
43988095 | 19150 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19151 | { |
dee91e82 | 19152 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19153 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19154 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19155 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19156 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19157 | bfd *abfd = reader->abfd; |
e7c27a73 | 19158 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19159 | unsigned int bytes_read; |
19160 | struct dwarf_block *blk; | |
19161 | ||
aead7601 | 19162 | attr->form = (enum dwarf_form) form; |
a8329558 | 19163 | switch (form) |
c906108c | 19164 | { |
c906108c | 19165 | case DW_FORM_ref_addr: |
ae411497 | 19166 | if (cu->header.version == 2) |
4568ecf9 | 19167 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19168 | else |
4568ecf9 DE |
19169 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19170 | &cu->header, &bytes_read); | |
ae411497 TT |
19171 | info_ptr += bytes_read; |
19172 | break; | |
36586728 TT |
19173 | case DW_FORM_GNU_ref_alt: |
19174 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19175 | info_ptr += bytes_read; | |
19176 | break; | |
ae411497 | 19177 | case DW_FORM_addr: |
e7c27a73 | 19178 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19179 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19180 | info_ptr += bytes_read; |
c906108c SS |
19181 | break; |
19182 | case DW_FORM_block2: | |
7b5a2f43 | 19183 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19184 | blk->size = read_2_bytes (abfd, info_ptr); |
19185 | info_ptr += 2; | |
19186 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19187 | info_ptr += blk->size; | |
19188 | DW_BLOCK (attr) = blk; | |
19189 | break; | |
19190 | case DW_FORM_block4: | |
7b5a2f43 | 19191 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19192 | blk->size = read_4_bytes (abfd, info_ptr); |
19193 | info_ptr += 4; | |
19194 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19195 | info_ptr += blk->size; | |
19196 | DW_BLOCK (attr) = blk; | |
19197 | break; | |
19198 | case DW_FORM_data2: | |
19199 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19200 | info_ptr += 2; | |
19201 | break; | |
19202 | case DW_FORM_data4: | |
19203 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19204 | info_ptr += 4; | |
19205 | break; | |
19206 | case DW_FORM_data8: | |
19207 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19208 | info_ptr += 8; | |
19209 | break; | |
0224619f JK |
19210 | case DW_FORM_data16: |
19211 | blk = dwarf_alloc_block (cu); | |
19212 | blk->size = 16; | |
19213 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19214 | info_ptr += 16; | |
19215 | DW_BLOCK (attr) = blk; | |
19216 | break; | |
2dc7f7b3 TT |
19217 | case DW_FORM_sec_offset: |
19218 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19219 | info_ptr += bytes_read; | |
19220 | break; | |
c906108c | 19221 | case DW_FORM_string: |
9b1c24c8 | 19222 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19223 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19224 | info_ptr += bytes_read; |
19225 | break; | |
4bdf3d34 | 19226 | case DW_FORM_strp: |
36586728 TT |
19227 | if (!cu->per_cu->is_dwz) |
19228 | { | |
ed2dc618 SM |
19229 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19230 | abfd, info_ptr, cu_header, | |
36586728 TT |
19231 | &bytes_read); |
19232 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19233 | info_ptr += bytes_read; | |
19234 | break; | |
19235 | } | |
19236 | /* FALLTHROUGH */ | |
43988095 JK |
19237 | case DW_FORM_line_strp: |
19238 | if (!cu->per_cu->is_dwz) | |
19239 | { | |
ed2dc618 SM |
19240 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19241 | abfd, info_ptr, | |
43988095 JK |
19242 | cu_header, &bytes_read); |
19243 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19244 | info_ptr += bytes_read; | |
19245 | break; | |
19246 | } | |
19247 | /* FALLTHROUGH */ | |
36586728 TT |
19248 | case DW_FORM_GNU_strp_alt: |
19249 | { | |
ed2dc618 | 19250 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19251 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19252 | &bytes_read); | |
19253 | ||
ed2dc618 SM |
19254 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19255 | dwz, str_offset); | |
36586728 TT |
19256 | DW_STRING_IS_CANONICAL (attr) = 0; |
19257 | info_ptr += bytes_read; | |
19258 | } | |
4bdf3d34 | 19259 | break; |
2dc7f7b3 | 19260 | case DW_FORM_exprloc: |
c906108c | 19261 | case DW_FORM_block: |
7b5a2f43 | 19262 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19263 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19264 | info_ptr += bytes_read; | |
19265 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19266 | info_ptr += blk->size; | |
19267 | DW_BLOCK (attr) = blk; | |
19268 | break; | |
19269 | case DW_FORM_block1: | |
7b5a2f43 | 19270 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19271 | blk->size = read_1_byte (abfd, info_ptr); |
19272 | info_ptr += 1; | |
19273 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19274 | info_ptr += blk->size; | |
19275 | DW_BLOCK (attr) = blk; | |
19276 | break; | |
19277 | case DW_FORM_data1: | |
19278 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19279 | info_ptr += 1; | |
19280 | break; | |
19281 | case DW_FORM_flag: | |
19282 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19283 | info_ptr += 1; | |
19284 | break; | |
2dc7f7b3 TT |
19285 | case DW_FORM_flag_present: |
19286 | DW_UNSND (attr) = 1; | |
19287 | break; | |
c906108c SS |
19288 | case DW_FORM_sdata: |
19289 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19290 | info_ptr += bytes_read; | |
19291 | break; | |
19292 | case DW_FORM_udata: | |
19293 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19294 | info_ptr += bytes_read; | |
19295 | break; | |
19296 | case DW_FORM_ref1: | |
9c541725 | 19297 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19298 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19299 | info_ptr += 1; |
19300 | break; | |
19301 | case DW_FORM_ref2: | |
9c541725 | 19302 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19303 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19304 | info_ptr += 2; |
19305 | break; | |
19306 | case DW_FORM_ref4: | |
9c541725 | 19307 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19308 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19309 | info_ptr += 4; |
19310 | break; | |
613e1657 | 19311 | case DW_FORM_ref8: |
9c541725 | 19312 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19313 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19314 | info_ptr += 8; |
19315 | break; | |
55f1336d | 19316 | case DW_FORM_ref_sig8: |
ac9ec31b | 19317 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19318 | info_ptr += 8; |
19319 | break; | |
c906108c | 19320 | case DW_FORM_ref_udata: |
9c541725 | 19321 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19322 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19323 | info_ptr += bytes_read; |
19324 | break; | |
c906108c | 19325 | case DW_FORM_indirect: |
a8329558 KW |
19326 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19327 | info_ptr += bytes_read; | |
43988095 JK |
19328 | if (form == DW_FORM_implicit_const) |
19329 | { | |
19330 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19331 | info_ptr += bytes_read; | |
19332 | } | |
19333 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19334 | info_ptr); | |
19335 | break; | |
19336 | case DW_FORM_implicit_const: | |
19337 | DW_SND (attr) = implicit_const; | |
a8329558 | 19338 | break; |
336d760d | 19339 | case DW_FORM_addrx: |
3019eac3 DE |
19340 | case DW_FORM_GNU_addr_index: |
19341 | if (reader->dwo_file == NULL) | |
19342 | { | |
19343 | /* For now flag a hard error. | |
19344 | Later we can turn this into a complaint. */ | |
19345 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19346 | dwarf_form_name (form), | |
19347 | bfd_get_filename (abfd)); | |
19348 | } | |
19349 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19350 | info_ptr += bytes_read; | |
19351 | break; | |
cf532bd1 | 19352 | case DW_FORM_strx: |
15f18d14 AT |
19353 | case DW_FORM_strx1: |
19354 | case DW_FORM_strx2: | |
19355 | case DW_FORM_strx3: | |
19356 | case DW_FORM_strx4: | |
3019eac3 DE |
19357 | case DW_FORM_GNU_str_index: |
19358 | if (reader->dwo_file == NULL) | |
19359 | { | |
19360 | /* For now flag a hard error. | |
19361 | Later we can turn this into a complaint if warranted. */ | |
19362 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19363 | dwarf_form_name (form), | |
19364 | bfd_get_filename (abfd)); | |
19365 | } | |
19366 | { | |
15f18d14 AT |
19367 | ULONGEST str_index; |
19368 | if (form == DW_FORM_strx1) | |
19369 | { | |
19370 | str_index = read_1_byte (abfd, info_ptr); | |
19371 | info_ptr += 1; | |
19372 | } | |
19373 | else if (form == DW_FORM_strx2) | |
19374 | { | |
19375 | str_index = read_2_bytes (abfd, info_ptr); | |
19376 | info_ptr += 2; | |
19377 | } | |
19378 | else if (form == DW_FORM_strx3) | |
19379 | { | |
19380 | str_index = read_3_bytes (abfd, info_ptr); | |
19381 | info_ptr += 3; | |
19382 | } | |
19383 | else if (form == DW_FORM_strx4) | |
19384 | { | |
19385 | str_index = read_4_bytes (abfd, info_ptr); | |
19386 | info_ptr += 4; | |
19387 | } | |
19388 | else | |
19389 | { | |
19390 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19391 | info_ptr += bytes_read; | |
19392 | } | |
342587c4 | 19393 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 | 19394 | DW_STRING_IS_CANONICAL (attr) = 0; |
3019eac3 DE |
19395 | } |
19396 | break; | |
c906108c | 19397 | default: |
8a3fe4f8 | 19398 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19399 | dwarf_form_name (form), |
19400 | bfd_get_filename (abfd)); | |
c906108c | 19401 | } |
28e94949 | 19402 | |
36586728 | 19403 | /* Super hack. */ |
7771576e | 19404 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19405 | attr->form = DW_FORM_GNU_ref_alt; |
19406 | ||
28e94949 JB |
19407 | /* We have seen instances where the compiler tried to emit a byte |
19408 | size attribute of -1 which ended up being encoded as an unsigned | |
19409 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19410 | an object of this size seems pretty unlikely so we can relatively | |
19411 | safely treat these cases as if the size attribute was invalid and | |
19412 | treat them as zero by default. */ | |
19413 | if (attr->name == DW_AT_byte_size | |
19414 | && form == DW_FORM_data4 | |
19415 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19416 | { |
19417 | complaint | |
b98664d3 | 19418 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19419 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19420 | DW_UNSND (attr) = 0; |
19421 | } | |
28e94949 | 19422 | |
c906108c SS |
19423 | return info_ptr; |
19424 | } | |
19425 | ||
a8329558 KW |
19426 | /* Read an attribute described by an abbreviated attribute. */ |
19427 | ||
d521ce57 | 19428 | static const gdb_byte * |
dee91e82 DE |
19429 | read_attribute (const struct die_reader_specs *reader, |
19430 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19431 | const gdb_byte *info_ptr) |
a8329558 KW |
19432 | { |
19433 | attr->name = abbrev->name; | |
43988095 JK |
19434 | return read_attribute_value (reader, attr, abbrev->form, |
19435 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19436 | } |
19437 | ||
0963b4bd | 19438 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19439 | |
19440 | static unsigned int | |
a1855c1d | 19441 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19442 | { |
fe1b8b76 | 19443 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19444 | } |
19445 | ||
19446 | static int | |
a1855c1d | 19447 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19448 | { |
fe1b8b76 | 19449 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19450 | } |
19451 | ||
19452 | static unsigned int | |
a1855c1d | 19453 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19454 | { |
fe1b8b76 | 19455 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19456 | } |
19457 | ||
21ae7a4d | 19458 | static int |
a1855c1d | 19459 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19460 | { |
19461 | return bfd_get_signed_16 (abfd, buf); | |
19462 | } | |
19463 | ||
15f18d14 AT |
19464 | static unsigned int |
19465 | read_3_bytes (bfd *abfd, const gdb_byte *buf) | |
19466 | { | |
19467 | unsigned int result = 0; | |
19468 | for (int i = 0; i < 3; ++i) | |
19469 | { | |
19470 | unsigned char byte = bfd_get_8 (abfd, buf); | |
19471 | buf++; | |
19472 | result |= ((unsigned int) byte << (i * 8)); | |
19473 | } | |
19474 | return result; | |
19475 | } | |
19476 | ||
c906108c | 19477 | static unsigned int |
a1855c1d | 19478 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19479 | { |
fe1b8b76 | 19480 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19481 | } |
19482 | ||
21ae7a4d | 19483 | static int |
a1855c1d | 19484 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19485 | { |
19486 | return bfd_get_signed_32 (abfd, buf); | |
19487 | } | |
19488 | ||
93311388 | 19489 | static ULONGEST |
a1855c1d | 19490 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19491 | { |
fe1b8b76 | 19492 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19493 | } |
19494 | ||
19495 | static CORE_ADDR | |
d521ce57 | 19496 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19497 | unsigned int *bytes_read) |
c906108c | 19498 | { |
e7c27a73 | 19499 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19500 | CORE_ADDR retval = 0; |
19501 | ||
107d2387 | 19502 | if (cu_header->signed_addr_p) |
c906108c | 19503 | { |
107d2387 AC |
19504 | switch (cu_header->addr_size) |
19505 | { | |
19506 | case 2: | |
fe1b8b76 | 19507 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19508 | break; |
19509 | case 4: | |
fe1b8b76 | 19510 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19511 | break; |
19512 | case 8: | |
fe1b8b76 | 19513 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19514 | break; |
19515 | default: | |
8e65ff28 | 19516 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19517 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19518 | bfd_get_filename (abfd)); |
107d2387 AC |
19519 | } |
19520 | } | |
19521 | else | |
19522 | { | |
19523 | switch (cu_header->addr_size) | |
19524 | { | |
19525 | case 2: | |
fe1b8b76 | 19526 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19527 | break; |
19528 | case 4: | |
fe1b8b76 | 19529 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19530 | break; |
19531 | case 8: | |
fe1b8b76 | 19532 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19533 | break; |
19534 | default: | |
8e65ff28 | 19535 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19536 | _("read_address: bad switch, " |
19537 | "unsigned [in module %s]"), | |
659b0389 | 19538 | bfd_get_filename (abfd)); |
107d2387 | 19539 | } |
c906108c | 19540 | } |
64367e0a | 19541 | |
107d2387 AC |
19542 | *bytes_read = cu_header->addr_size; |
19543 | return retval; | |
c906108c SS |
19544 | } |
19545 | ||
f7ef9339 | 19546 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19547 | specification allows the initial length to take up either 4 bytes |
19548 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19549 | bytes describe the length and all offsets will be 8 bytes in length | |
19550 | instead of 4. | |
19551 | ||
f7ef9339 KB |
19552 | An older, non-standard 64-bit format is also handled by this |
19553 | function. The older format in question stores the initial length | |
19554 | as an 8-byte quantity without an escape value. Lengths greater | |
19555 | than 2^32 aren't very common which means that the initial 4 bytes | |
19556 | is almost always zero. Since a length value of zero doesn't make | |
19557 | sense for the 32-bit format, this initial zero can be considered to | |
19558 | be an escape value which indicates the presence of the older 64-bit | |
19559 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19560 | greater than 4GB. If it becomes necessary to handle lengths |
19561 | somewhat larger than 4GB, we could allow other small values (such | |
19562 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19563 | escape values indicating the presence of the old format. | |
f7ef9339 | 19564 | |
917c78fc MK |
19565 | The value returned via bytes_read should be used to increment the |
19566 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19567 | |
613e1657 KB |
19568 | [ Note: read_initial_length() and read_offset() are based on the |
19569 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19570 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19571 | from: |
19572 | ||
f7ef9339 | 19573 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19574 | |
613e1657 KB |
19575 | This document is only a draft and is subject to change. (So beware.) |
19576 | ||
f7ef9339 | 19577 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19578 | determined empirically by examining 64-bit ELF files produced by |
19579 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19580 | |
19581 | - Kevin, July 16, 2002 | |
613e1657 KB |
19582 | ] */ |
19583 | ||
19584 | static LONGEST | |
d521ce57 | 19585 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19586 | { |
fe1b8b76 | 19587 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19588 | |
dd373385 | 19589 | if (length == 0xffffffff) |
613e1657 | 19590 | { |
fe1b8b76 | 19591 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19592 | *bytes_read = 12; |
613e1657 | 19593 | } |
dd373385 | 19594 | else if (length == 0) |
f7ef9339 | 19595 | { |
dd373385 | 19596 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19597 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19598 | *bytes_read = 8; |
f7ef9339 | 19599 | } |
613e1657 KB |
19600 | else |
19601 | { | |
19602 | *bytes_read = 4; | |
613e1657 KB |
19603 | } |
19604 | ||
c764a876 DE |
19605 | return length; |
19606 | } | |
dd373385 | 19607 | |
c764a876 DE |
19608 | /* Cover function for read_initial_length. |
19609 | Returns the length of the object at BUF, and stores the size of the | |
19610 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19611 | *OFFSET_SIZE. | |
19612 | If the initial length size is not equivalent to that specified in | |
19613 | CU_HEADER then issue a complaint. | |
19614 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19615 | |
c764a876 | 19616 | static LONGEST |
d521ce57 | 19617 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19618 | const struct comp_unit_head *cu_header, |
19619 | unsigned int *bytes_read, | |
19620 | unsigned int *offset_size) | |
19621 | { | |
19622 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19623 | ||
19624 | gdb_assert (cu_header->initial_length_size == 4 | |
19625 | || cu_header->initial_length_size == 8 | |
19626 | || cu_header->initial_length_size == 12); | |
19627 | ||
19628 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19629 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19630 | |
c764a876 | 19631 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19632 | return length; |
613e1657 KB |
19633 | } |
19634 | ||
19635 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19636 | given by cu_header->offset_size. */ |
613e1657 KB |
19637 | |
19638 | static LONGEST | |
d521ce57 TT |
19639 | read_offset (bfd *abfd, const gdb_byte *buf, |
19640 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19641 | unsigned int *bytes_read) |
c764a876 DE |
19642 | { |
19643 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19644 | |
c764a876 DE |
19645 | *bytes_read = cu_header->offset_size; |
19646 | return offset; | |
19647 | } | |
19648 | ||
19649 | /* Read an offset from the data stream. */ | |
19650 | ||
19651 | static LONGEST | |
d521ce57 | 19652 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19653 | { |
19654 | LONGEST retval = 0; | |
19655 | ||
c764a876 | 19656 | switch (offset_size) |
613e1657 KB |
19657 | { |
19658 | case 4: | |
fe1b8b76 | 19659 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19660 | break; |
19661 | case 8: | |
fe1b8b76 | 19662 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19663 | break; |
19664 | default: | |
8e65ff28 | 19665 | internal_error (__FILE__, __LINE__, |
c764a876 | 19666 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19667 | bfd_get_filename (abfd)); |
613e1657 KB |
19668 | } |
19669 | ||
917c78fc | 19670 | return retval; |
613e1657 KB |
19671 | } |
19672 | ||
d521ce57 TT |
19673 | static const gdb_byte * |
19674 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19675 | { |
19676 | /* If the size of a host char is 8 bits, we can return a pointer | |
19677 | to the buffer, otherwise we have to copy the data to a buffer | |
19678 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19679 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19680 | return buf; |
c906108c SS |
19681 | } |
19682 | ||
d521ce57 TT |
19683 | static const char * |
19684 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19685 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19686 | { |
19687 | /* If the size of a host char is 8 bits, we can return a pointer | |
19688 | to the string, otherwise we have to copy the string to a buffer | |
19689 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19690 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19691 | if (*buf == '\0') |
19692 | { | |
19693 | *bytes_read_ptr = 1; | |
19694 | return NULL; | |
19695 | } | |
d521ce57 TT |
19696 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19697 | return (const char *) buf; | |
4bdf3d34 JJ |
19698 | } |
19699 | ||
43988095 JK |
19700 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19701 | reporting strings FORM_NAME and SECT_NAME. */ | |
19702 | ||
d521ce57 | 19703 | static const char * |
ed2dc618 SM |
19704 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19705 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19706 | struct dwarf2_section_info *sect, |
19707 | const char *form_name, | |
19708 | const char *sect_name) | |
19709 | { | |
ed2dc618 | 19710 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19711 | if (sect->buffer == NULL) |
19712 | error (_("%s used without %s section [in module %s]"), | |
19713 | form_name, sect_name, bfd_get_filename (abfd)); | |
19714 | if (str_offset >= sect->size) | |
19715 | error (_("%s pointing outside of %s section [in module %s]"), | |
19716 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19717 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19718 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19719 | return NULL; |
43988095 JK |
19720 | return (const char *) (sect->buffer + str_offset); |
19721 | } | |
19722 | ||
19723 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19724 | ||
19725 | static const char * | |
ed2dc618 SM |
19726 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19727 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19728 | { |
ed2dc618 SM |
19729 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19730 | abfd, str_offset, | |
43988095 JK |
19731 | &dwarf2_per_objfile->str, |
19732 | "DW_FORM_strp", ".debug_str"); | |
19733 | } | |
19734 | ||
19735 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19736 | ||
19737 | static const char * | |
ed2dc618 SM |
19738 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19739 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19740 | { |
ed2dc618 SM |
19741 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19742 | abfd, str_offset, | |
43988095 JK |
19743 | &dwarf2_per_objfile->line_str, |
19744 | "DW_FORM_line_strp", | |
19745 | ".debug_line_str"); | |
c906108c SS |
19746 | } |
19747 | ||
36586728 TT |
19748 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19749 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19750 | the string consists of a single NUL byte, return NULL; otherwise | |
19751 | return a pointer to the string. */ | |
19752 | ||
d521ce57 | 19753 | static const char * |
ed2dc618 SM |
19754 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19755 | LONGEST str_offset) | |
36586728 | 19756 | { |
ed2dc618 | 19757 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19758 | |
19759 | if (dwz->str.buffer == NULL) | |
19760 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19761 | "section [in module %s]"), | |
00f93c44 | 19762 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19763 | if (str_offset >= dwz->str.size) |
19764 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19765 | ".debug_str section [in module %s]"), | |
00f93c44 | 19766 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19767 | gdb_assert (HOST_CHAR_BIT == 8); |
19768 | if (dwz->str.buffer[str_offset] == '\0') | |
19769 | return NULL; | |
d521ce57 | 19770 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19771 | } |
19772 | ||
43988095 JK |
19773 | /* Return pointer to string at .debug_str offset as read from BUF. |
19774 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19775 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19776 | ||
d521ce57 | 19777 | static const char * |
ed2dc618 SM |
19778 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19779 | const gdb_byte *buf, | |
cf2c3c16 TT |
19780 | const struct comp_unit_head *cu_header, |
19781 | unsigned int *bytes_read_ptr) | |
19782 | { | |
19783 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19784 | ||
ed2dc618 | 19785 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19786 | } |
19787 | ||
43988095 JK |
19788 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19789 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19790 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19791 | ||
19792 | static const char * | |
ed2dc618 SM |
19793 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19794 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19795 | const struct comp_unit_head *cu_header, |
19796 | unsigned int *bytes_read_ptr) | |
19797 | { | |
19798 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19799 | ||
ed2dc618 SM |
19800 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19801 | str_offset); | |
43988095 JK |
19802 | } |
19803 | ||
19804 | ULONGEST | |
d521ce57 | 19805 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19806 | unsigned int *bytes_read_ptr) |
c906108c | 19807 | { |
12df843f | 19808 | ULONGEST result; |
ce5d95e1 | 19809 | unsigned int num_read; |
870f88f7 | 19810 | int shift; |
c906108c SS |
19811 | unsigned char byte; |
19812 | ||
19813 | result = 0; | |
19814 | shift = 0; | |
19815 | num_read = 0; | |
c906108c SS |
19816 | while (1) |
19817 | { | |
fe1b8b76 | 19818 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19819 | buf++; |
19820 | num_read++; | |
12df843f | 19821 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19822 | if ((byte & 128) == 0) |
19823 | { | |
19824 | break; | |
19825 | } | |
19826 | shift += 7; | |
19827 | } | |
19828 | *bytes_read_ptr = num_read; | |
19829 | return result; | |
19830 | } | |
19831 | ||
12df843f | 19832 | static LONGEST |
d521ce57 TT |
19833 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19834 | unsigned int *bytes_read_ptr) | |
c906108c | 19835 | { |
4dd1b460 | 19836 | ULONGEST result; |
870f88f7 | 19837 | int shift, num_read; |
c906108c SS |
19838 | unsigned char byte; |
19839 | ||
19840 | result = 0; | |
19841 | shift = 0; | |
c906108c | 19842 | num_read = 0; |
c906108c SS |
19843 | while (1) |
19844 | { | |
fe1b8b76 | 19845 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19846 | buf++; |
19847 | num_read++; | |
4dd1b460 | 19848 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19849 | shift += 7; |
19850 | if ((byte & 128) == 0) | |
19851 | { | |
19852 | break; | |
19853 | } | |
19854 | } | |
77e0b926 | 19855 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
4dd1b460 | 19856 | result |= -(((ULONGEST) 1) << shift); |
c906108c SS |
19857 | *bytes_read_ptr = num_read; |
19858 | return result; | |
19859 | } | |
19860 | ||
3019eac3 DE |
19861 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19862 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19863 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19864 | ||
19865 | static CORE_ADDR | |
ed2dc618 SM |
19866 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19867 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19868 | { |
19869 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19870 | bfd *abfd = objfile->obfd; | |
19871 | const gdb_byte *info_ptr; | |
19872 | ||
19873 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19874 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19875 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19876 | objfile_name (objfile)); |
3019eac3 DE |
19877 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19878 | error (_("DW_FORM_addr_index pointing outside of " | |
19879 | ".debug_addr section [in module %s]"), | |
4262abfb | 19880 | objfile_name (objfile)); |
3019eac3 DE |
19881 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19882 | + addr_base + addr_index * addr_size); | |
19883 | if (addr_size == 4) | |
19884 | return bfd_get_32 (abfd, info_ptr); | |
19885 | else | |
19886 | return bfd_get_64 (abfd, info_ptr); | |
19887 | } | |
19888 | ||
19889 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19890 | ||
19891 | static CORE_ADDR | |
19892 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19893 | { | |
518817b3 SM |
19894 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19895 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19896 | } |
19897 | ||
19898 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19899 | ||
19900 | static CORE_ADDR | |
d521ce57 | 19901 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19902 | unsigned int *bytes_read) |
19903 | { | |
518817b3 | 19904 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19905 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19906 | ||
19907 | return read_addr_index (cu, addr_index); | |
19908 | } | |
19909 | ||
19910 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19911 | back to dwarf2_read_addr_index. */ | |
19912 | ||
19913 | struct dwarf2_read_addr_index_data | |
19914 | { | |
19915 | ULONGEST addr_base; | |
19916 | int addr_size; | |
19917 | }; | |
19918 | ||
19919 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19920 | ||
19921 | static void | |
19922 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19923 | const gdb_byte *info_ptr, |
3019eac3 DE |
19924 | struct die_info *comp_unit_die, |
19925 | int has_children, | |
19926 | void *data) | |
19927 | { | |
19928 | struct dwarf2_cu *cu = reader->cu; | |
19929 | struct dwarf2_read_addr_index_data *aidata = | |
19930 | (struct dwarf2_read_addr_index_data *) data; | |
19931 | ||
19932 | aidata->addr_base = cu->addr_base; | |
19933 | aidata->addr_size = cu->header.addr_size; | |
19934 | } | |
19935 | ||
19936 | /* Given an index in .debug_addr, fetch the value. | |
19937 | NOTE: This can be called during dwarf expression evaluation, | |
19938 | long after the debug information has been read, and thus per_cu->cu | |
19939 | may no longer exist. */ | |
19940 | ||
19941 | CORE_ADDR | |
19942 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19943 | unsigned int addr_index) | |
19944 | { | |
ed2dc618 | 19945 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19946 | struct dwarf2_cu *cu = per_cu->cu; |
19947 | ULONGEST addr_base; | |
19948 | int addr_size; | |
19949 | ||
3019eac3 DE |
19950 | /* We need addr_base and addr_size. |
19951 | If we don't have PER_CU->cu, we have to get it. | |
19952 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19953 | which at this point doesn't seem justified: it's not clear how frequently | |
19954 | it would get used and it would increase the size of every PER_CU. | |
19955 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19956 | so we're not in uncharted territory here. | |
19957 | Alas we need to be a bit more complicated as addr_base is contained | |
19958 | in the DIE. | |
19959 | ||
19960 | We don't need to read the entire CU(/TU). | |
19961 | We just need the header and top level die. | |
a1b64ce1 | 19962 | |
3019eac3 | 19963 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19964 | For now we skip this optimization. */ |
3019eac3 DE |
19965 | |
19966 | if (cu != NULL) | |
19967 | { | |
19968 | addr_base = cu->addr_base; | |
19969 | addr_size = cu->header.addr_size; | |
19970 | } | |
19971 | else | |
19972 | { | |
19973 | struct dwarf2_read_addr_index_data aidata; | |
19974 | ||
a1b64ce1 DE |
19975 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19976 | we need addr_base. */ | |
58f0c718 | 19977 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19978 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19979 | addr_base = aidata.addr_base; |
19980 | addr_size = aidata.addr_size; | |
19981 | } | |
19982 | ||
ed2dc618 SM |
19983 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19984 | addr_size); | |
3019eac3 DE |
19985 | } |
19986 | ||
cf532bd1 | 19987 | /* Given a DW_FORM_GNU_str_index or DW_FORM_strx, fetch the string. |
57d63ce2 | 19988 | This is only used by the Fission support. */ |
3019eac3 | 19989 | |
d521ce57 | 19990 | static const char * |
342587c4 | 19991 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19992 | { |
ed2dc618 | 19993 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19994 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19995 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19996 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19997 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19998 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19999 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
20000 | struct dwarf2_section_info *str_offsets_section = | |
20001 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 20002 | const gdb_byte *info_ptr; |
3019eac3 | 20003 | ULONGEST str_offset; |
cf532bd1 | 20004 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20005 | |
73869dc2 DE |
20006 | dwarf2_read_section (objfile, str_section); |
20007 | dwarf2_read_section (objfile, str_offsets_section); | |
20008 | if (str_section->buffer == NULL) | |
57d63ce2 | 20009 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
20010 | " in CU at offset %s [in module %s]"), |
20011 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20012 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 20013 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
20014 | " in CU at offset %s [in module %s]"), |
20015 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20016 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 20017 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
20018 | " section in CU at offset %s [in module %s]"), |
20019 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20020 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
20021 | + str_index * cu->header.offset_size); |
20022 | if (cu->header.offset_size == 4) | |
20023 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20024 | else | |
20025 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20026 | if (str_offset >= str_section->size) |
57d63ce2 | 20027 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20028 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20029 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20030 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20031 | } |
20032 | ||
3019eac3 DE |
20033 | /* Return the length of an LEB128 number in BUF. */ |
20034 | ||
20035 | static int | |
20036 | leb128_size (const gdb_byte *buf) | |
20037 | { | |
20038 | const gdb_byte *begin = buf; | |
20039 | gdb_byte byte; | |
20040 | ||
20041 | while (1) | |
20042 | { | |
20043 | byte = *buf++; | |
20044 | if ((byte & 128) == 0) | |
20045 | return buf - begin; | |
20046 | } | |
20047 | } | |
20048 | ||
c906108c | 20049 | static void |
e142c38c | 20050 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20051 | { |
20052 | switch (lang) | |
20053 | { | |
20054 | case DW_LANG_C89: | |
76bee0cc | 20055 | case DW_LANG_C99: |
0cfd832f | 20056 | case DW_LANG_C11: |
c906108c | 20057 | case DW_LANG_C: |
d1be3247 | 20058 | case DW_LANG_UPC: |
e142c38c | 20059 | cu->language = language_c; |
c906108c | 20060 | break; |
9c37b5ae | 20061 | case DW_LANG_Java: |
c906108c | 20062 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20063 | case DW_LANG_C_plus_plus_11: |
20064 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20065 | cu->language = language_cplus; |
c906108c | 20066 | break; |
6aecb9c2 JB |
20067 | case DW_LANG_D: |
20068 | cu->language = language_d; | |
20069 | break; | |
c906108c SS |
20070 | case DW_LANG_Fortran77: |
20071 | case DW_LANG_Fortran90: | |
b21b22e0 | 20072 | case DW_LANG_Fortran95: |
f7de9aab MW |
20073 | case DW_LANG_Fortran03: |
20074 | case DW_LANG_Fortran08: | |
e142c38c | 20075 | cu->language = language_fortran; |
c906108c | 20076 | break; |
a766d390 DE |
20077 | case DW_LANG_Go: |
20078 | cu->language = language_go; | |
20079 | break; | |
c906108c | 20080 | case DW_LANG_Mips_Assembler: |
e142c38c | 20081 | cu->language = language_asm; |
c906108c SS |
20082 | break; |
20083 | case DW_LANG_Ada83: | |
8aaf0b47 | 20084 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20085 | cu->language = language_ada; |
20086 | break; | |
72019c9c GM |
20087 | case DW_LANG_Modula2: |
20088 | cu->language = language_m2; | |
20089 | break; | |
fe8e67fd PM |
20090 | case DW_LANG_Pascal83: |
20091 | cu->language = language_pascal; | |
20092 | break; | |
22566fbd DJ |
20093 | case DW_LANG_ObjC: |
20094 | cu->language = language_objc; | |
20095 | break; | |
c44af4eb TT |
20096 | case DW_LANG_Rust: |
20097 | case DW_LANG_Rust_old: | |
20098 | cu->language = language_rust; | |
20099 | break; | |
c906108c SS |
20100 | case DW_LANG_Cobol74: |
20101 | case DW_LANG_Cobol85: | |
c906108c | 20102 | default: |
e142c38c | 20103 | cu->language = language_minimal; |
c906108c SS |
20104 | break; |
20105 | } | |
e142c38c | 20106 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20107 | } |
20108 | ||
20109 | /* Return the named attribute or NULL if not there. */ | |
20110 | ||
20111 | static struct attribute * | |
e142c38c | 20112 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20113 | { |
a48e046c | 20114 | for (;;) |
c906108c | 20115 | { |
a48e046c TT |
20116 | unsigned int i; |
20117 | struct attribute *spec = NULL; | |
20118 | ||
20119 | for (i = 0; i < die->num_attrs; ++i) | |
20120 | { | |
20121 | if (die->attrs[i].name == name) | |
20122 | return &die->attrs[i]; | |
20123 | if (die->attrs[i].name == DW_AT_specification | |
20124 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20125 | spec = &die->attrs[i]; | |
20126 | } | |
20127 | ||
20128 | if (!spec) | |
20129 | break; | |
c906108c | 20130 | |
f2f0e013 | 20131 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20132 | } |
c5aa993b | 20133 | |
c906108c SS |
20134 | return NULL; |
20135 | } | |
20136 | ||
348e048f DE |
20137 | /* Return the named attribute or NULL if not there, |
20138 | but do not follow DW_AT_specification, etc. | |
20139 | This is for use in contexts where we're reading .debug_types dies. | |
20140 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20141 | back up the chain, and we want to go down. */ | |
20142 | ||
20143 | static struct attribute * | |
45e58e77 | 20144 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20145 | { |
20146 | unsigned int i; | |
20147 | ||
20148 | for (i = 0; i < die->num_attrs; ++i) | |
20149 | if (die->attrs[i].name == name) | |
20150 | return &die->attrs[i]; | |
20151 | ||
20152 | return NULL; | |
20153 | } | |
20154 | ||
7d45c7c3 KB |
20155 | /* Return the string associated with a string-typed attribute, or NULL if it |
20156 | is either not found or is of an incorrect type. */ | |
20157 | ||
20158 | static const char * | |
20159 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20160 | { | |
20161 | struct attribute *attr; | |
20162 | const char *str = NULL; | |
20163 | ||
20164 | attr = dwarf2_attr (die, name, cu); | |
20165 | ||
20166 | if (attr != NULL) | |
20167 | { | |
43988095 | 20168 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 20169 | || attr->form == DW_FORM_string |
cf532bd1 | 20170 | || attr->form == DW_FORM_strx |
b3340438 | 20171 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 20172 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20173 | str = DW_STRING (attr); |
20174 | else | |
b98664d3 | 20175 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20176 | "DIE at %s in module %s"), |
20177 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20178 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20179 | } |
20180 | ||
20181 | return str; | |
20182 | } | |
20183 | ||
a084a2a6 AT |
20184 | /* Return the dwo name or NULL if not present. If present, it is in either |
20185 | DW_AT_GNU_dwo_name or DW_AT_dwo_name atrribute. */ | |
20186 | static const char * | |
20187 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20188 | { | |
20189 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20190 | if (dwo_name == nullptr) | |
20191 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20192 | return dwo_name; | |
20193 | } | |
20194 | ||
05cf31d1 JB |
20195 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20196 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20197 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20198 | |
20199 | static int | |
20200 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20201 | { | |
20202 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20203 | ||
20204 | return (attr && DW_UNSND (attr)); | |
20205 | } | |
20206 | ||
3ca72b44 | 20207 | static int |
e142c38c | 20208 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20209 | { |
05cf31d1 JB |
20210 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20211 | which value is non-zero. However, we have to be careful with | |
20212 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20213 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20214 | end up accidently finding a declaration attribute that belongs | |
20215 | to a different DIE referenced by the specification attribute, | |
20216 | even though the given DIE does not have a declaration attribute. */ | |
20217 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20218 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20219 | } |
20220 | ||
63d06c5c | 20221 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20222 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20223 | containing the return value on output. If there is no |
20224 | specification, but there is an abstract origin, that is | |
20225 | returned. */ | |
63d06c5c DC |
20226 | |
20227 | static struct die_info * | |
f2f0e013 | 20228 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20229 | { |
f2f0e013 DJ |
20230 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20231 | *spec_cu); | |
63d06c5c | 20232 | |
edb3359d DJ |
20233 | if (spec_attr == NULL) |
20234 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20235 | ||
63d06c5c DC |
20236 | if (spec_attr == NULL) |
20237 | return NULL; | |
20238 | else | |
f2f0e013 | 20239 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20240 | } |
c906108c | 20241 | |
527f3840 JK |
20242 | /* Stub for free_line_header to match void * callback types. */ |
20243 | ||
20244 | static void | |
20245 | free_line_header_voidp (void *arg) | |
20246 | { | |
9a3c8263 | 20247 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20248 | |
fff8551c | 20249 | delete lh; |
527f3840 JK |
20250 | } |
20251 | ||
fff8551c PA |
20252 | void |
20253 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20254 | { |
27e0867f | 20255 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20256 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20257 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20258 | |
fff8551c | 20259 | include_dirs.push_back (include_dir); |
debd256d | 20260 | } |
6e70227d | 20261 | |
fff8551c PA |
20262 | void |
20263 | line_header::add_file_name (const char *name, | |
ecfb656c | 20264 | dir_index d_index, |
fff8551c PA |
20265 | unsigned int mod_time, |
20266 | unsigned int length) | |
debd256d | 20267 | { |
27e0867f DE |
20268 | if (dwarf_line_debug >= 2) |
20269 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20270 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20271 | |
ecfb656c | 20272 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20273 | } |
6e70227d | 20274 | |
83769d0b | 20275 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20276 | |
20277 | static struct dwarf2_section_info * | |
20278 | get_debug_line_section (struct dwarf2_cu *cu) | |
20279 | { | |
20280 | struct dwarf2_section_info *section; | |
518817b3 SM |
20281 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20282 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20283 | |
20284 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20285 | DWO file. */ | |
20286 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20287 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20288 | else if (cu->per_cu->is_dwz) | |
20289 | { | |
ed2dc618 | 20290 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20291 | |
20292 | section = &dwz->line; | |
20293 | } | |
20294 | else | |
20295 | section = &dwarf2_per_objfile->line; | |
20296 | ||
20297 | return section; | |
20298 | } | |
20299 | ||
43988095 JK |
20300 | /* Read directory or file name entry format, starting with byte of |
20301 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20302 | entries count and the entries themselves in the described entry | |
20303 | format. */ | |
20304 | ||
20305 | static void | |
ed2dc618 SM |
20306 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20307 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20308 | struct line_header *lh, |
20309 | const struct comp_unit_head *cu_header, | |
20310 | void (*callback) (struct line_header *lh, | |
20311 | const char *name, | |
ecfb656c | 20312 | dir_index d_index, |
43988095 JK |
20313 | unsigned int mod_time, |
20314 | unsigned int length)) | |
20315 | { | |
20316 | gdb_byte format_count, formati; | |
20317 | ULONGEST data_count, datai; | |
20318 | const gdb_byte *buf = *bufp; | |
20319 | const gdb_byte *format_header_data; | |
43988095 JK |
20320 | unsigned int bytes_read; |
20321 | ||
20322 | format_count = read_1_byte (abfd, buf); | |
20323 | buf += 1; | |
20324 | format_header_data = buf; | |
20325 | for (formati = 0; formati < format_count; formati++) | |
20326 | { | |
20327 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20328 | buf += bytes_read; | |
20329 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20330 | buf += bytes_read; | |
20331 | } | |
20332 | ||
20333 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20334 | buf += bytes_read; | |
20335 | for (datai = 0; datai < data_count; datai++) | |
20336 | { | |
20337 | const gdb_byte *format = format_header_data; | |
20338 | struct file_entry fe; | |
20339 | ||
43988095 JK |
20340 | for (formati = 0; formati < format_count; formati++) |
20341 | { | |
ecfb656c | 20342 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20343 | format += bytes_read; |
43988095 | 20344 | |
ecfb656c | 20345 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20346 | format += bytes_read; |
ecfb656c PA |
20347 | |
20348 | gdb::optional<const char *> string; | |
20349 | gdb::optional<unsigned int> uint; | |
20350 | ||
43988095 JK |
20351 | switch (form) |
20352 | { | |
20353 | case DW_FORM_string: | |
ecfb656c | 20354 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20355 | buf += bytes_read; |
20356 | break; | |
20357 | ||
20358 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20359 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20360 | abfd, buf, | |
ecfb656c PA |
20361 | cu_header, |
20362 | &bytes_read)); | |
43988095 JK |
20363 | buf += bytes_read; |
20364 | break; | |
20365 | ||
20366 | case DW_FORM_data1: | |
ecfb656c | 20367 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20368 | buf += 1; |
20369 | break; | |
20370 | ||
20371 | case DW_FORM_data2: | |
ecfb656c | 20372 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20373 | buf += 2; |
20374 | break; | |
20375 | ||
20376 | case DW_FORM_data4: | |
ecfb656c | 20377 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20378 | buf += 4; |
20379 | break; | |
20380 | ||
20381 | case DW_FORM_data8: | |
ecfb656c | 20382 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20383 | buf += 8; |
20384 | break; | |
20385 | ||
20386 | case DW_FORM_udata: | |
ecfb656c | 20387 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20388 | buf += bytes_read; |
20389 | break; | |
20390 | ||
20391 | case DW_FORM_block: | |
20392 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20393 | current GDB. */ | |
20394 | break; | |
20395 | } | |
ecfb656c PA |
20396 | |
20397 | switch (content_type) | |
20398 | { | |
20399 | case DW_LNCT_path: | |
20400 | if (string.has_value ()) | |
20401 | fe.name = *string; | |
20402 | break; | |
20403 | case DW_LNCT_directory_index: | |
20404 | if (uint.has_value ()) | |
20405 | fe.d_index = (dir_index) *uint; | |
20406 | break; | |
20407 | case DW_LNCT_timestamp: | |
20408 | if (uint.has_value ()) | |
20409 | fe.mod_time = *uint; | |
20410 | break; | |
20411 | case DW_LNCT_size: | |
20412 | if (uint.has_value ()) | |
20413 | fe.length = *uint; | |
20414 | break; | |
20415 | case DW_LNCT_MD5: | |
20416 | break; | |
20417 | default: | |
b98664d3 | 20418 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20419 | pulongest (content_type)); |
20420 | } | |
43988095 JK |
20421 | } |
20422 | ||
ecfb656c | 20423 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20424 | } |
20425 | ||
20426 | *bufp = buf; | |
20427 | } | |
20428 | ||
debd256d | 20429 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20430 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20431 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20432 | Returns NULL if there is a problem reading the header, e.g., if it |
20433 | has a version we don't understand. | |
debd256d JB |
20434 | |
20435 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20436 | the returned object point into the dwarf line section buffer, |
20437 | and must not be freed. */ | |
ae2de4f8 | 20438 | |
fff8551c | 20439 | static line_header_up |
9c541725 | 20440 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20441 | { |
d521ce57 | 20442 | const gdb_byte *line_ptr; |
c764a876 | 20443 | unsigned int bytes_read, offset_size; |
debd256d | 20444 | int i; |
d521ce57 | 20445 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20446 | struct dwarf2_section_info *section; |
20447 | bfd *abfd; | |
518817b3 SM |
20448 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20449 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20450 | |
36586728 | 20451 | section = get_debug_line_section (cu); |
3019eac3 DE |
20452 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20453 | if (section->buffer == NULL) | |
debd256d | 20454 | { |
3019eac3 | 20455 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20456 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20457 | else |
b98664d3 | 20458 | complaint (_("missing .debug_line section")); |
debd256d JB |
20459 | return 0; |
20460 | } | |
20461 | ||
fceca515 DE |
20462 | /* We can't do this until we know the section is non-empty. |
20463 | Only then do we know we have such a section. */ | |
a32a8923 | 20464 | abfd = get_section_bfd_owner (section); |
fceca515 | 20465 | |
a738430d MK |
20466 | /* Make sure that at least there's room for the total_length field. |
20467 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20468 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20469 | { |
4d3c2250 | 20470 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20471 | return 0; |
20472 | } | |
20473 | ||
fff8551c | 20474 | line_header_up lh (new line_header ()); |
debd256d | 20475 | |
9c541725 | 20476 | lh->sect_off = sect_off; |
527f3840 JK |
20477 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20478 | ||
9c541725 | 20479 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20480 | |
a738430d | 20481 | /* Read in the header. */ |
6e70227d | 20482 | lh->total_length = |
c764a876 DE |
20483 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20484 | &bytes_read, &offset_size); | |
debd256d | 20485 | line_ptr += bytes_read; |
3019eac3 | 20486 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20487 | { |
4d3c2250 | 20488 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20489 | return 0; |
20490 | } | |
20491 | lh->statement_program_end = line_ptr + lh->total_length; | |
20492 | lh->version = read_2_bytes (abfd, line_ptr); | |
20493 | line_ptr += 2; | |
43988095 | 20494 | if (lh->version > 5) |
cd366ee8 DE |
20495 | { |
20496 | /* This is a version we don't understand. The format could have | |
20497 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20498 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20499 | return NULL; |
20500 | } | |
43988095 JK |
20501 | if (lh->version >= 5) |
20502 | { | |
20503 | gdb_byte segment_selector_size; | |
20504 | ||
20505 | /* Skip address size. */ | |
20506 | read_1_byte (abfd, line_ptr); | |
20507 | line_ptr += 1; | |
20508 | ||
20509 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20510 | line_ptr += 1; | |
20511 | if (segment_selector_size != 0) | |
20512 | { | |
b98664d3 | 20513 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20514 | "in .debug_line section"), |
20515 | segment_selector_size); | |
20516 | return NULL; | |
20517 | } | |
20518 | } | |
c764a876 DE |
20519 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20520 | line_ptr += offset_size; | |
debd256d JB |
20521 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20522 | line_ptr += 1; | |
2dc7f7b3 TT |
20523 | if (lh->version >= 4) |
20524 | { | |
20525 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20526 | line_ptr += 1; | |
20527 | } | |
20528 | else | |
20529 | lh->maximum_ops_per_instruction = 1; | |
20530 | ||
20531 | if (lh->maximum_ops_per_instruction == 0) | |
20532 | { | |
20533 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20534 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20535 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20536 | } |
20537 | ||
debd256d JB |
20538 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20539 | line_ptr += 1; | |
20540 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20541 | line_ptr += 1; | |
20542 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20543 | line_ptr += 1; | |
20544 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20545 | line_ptr += 1; | |
fff8551c | 20546 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20547 | |
20548 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20549 | for (i = 1; i < lh->opcode_base; ++i) | |
20550 | { | |
20551 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20552 | line_ptr += 1; | |
20553 | } | |
20554 | ||
43988095 | 20555 | if (lh->version >= 5) |
debd256d | 20556 | { |
43988095 | 20557 | /* Read directory table. */ |
ed2dc618 SM |
20558 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20559 | &cu->header, | |
b926417a | 20560 | [] (struct line_header *header, const char *name, |
ecfb656c | 20561 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20562 | unsigned int length) |
20563 | { | |
b926417a | 20564 | header->add_include_dir (name); |
fff8551c | 20565 | }); |
debd256d | 20566 | |
43988095 | 20567 | /* Read file name table. */ |
ed2dc618 SM |
20568 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20569 | &cu->header, | |
b926417a | 20570 | [] (struct line_header *header, const char *name, |
ecfb656c | 20571 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20572 | unsigned int length) |
20573 | { | |
b926417a | 20574 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20575 | }); |
43988095 JK |
20576 | } |
20577 | else | |
debd256d | 20578 | { |
43988095 JK |
20579 | /* Read directory table. */ |
20580 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20581 | { | |
20582 | line_ptr += bytes_read; | |
fff8551c | 20583 | lh->add_include_dir (cur_dir); |
43988095 | 20584 | } |
debd256d JB |
20585 | line_ptr += bytes_read; |
20586 | ||
43988095 JK |
20587 | /* Read file name table. */ |
20588 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20589 | { | |
ecfb656c PA |
20590 | unsigned int mod_time, length; |
20591 | dir_index d_index; | |
43988095 JK |
20592 | |
20593 | line_ptr += bytes_read; | |
ecfb656c | 20594 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20595 | line_ptr += bytes_read; |
20596 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20597 | line_ptr += bytes_read; | |
20598 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20599 | line_ptr += bytes_read; | |
20600 | ||
ecfb656c | 20601 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20602 | } |
20603 | line_ptr += bytes_read; | |
debd256d | 20604 | } |
6e70227d | 20605 | lh->statement_program_start = line_ptr; |
debd256d | 20606 | |
3019eac3 | 20607 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20608 | complaint (_("line number info header doesn't " |
3e43a32a | 20609 | "fit in `.debug_line' section")); |
debd256d | 20610 | |
debd256d JB |
20611 | return lh; |
20612 | } | |
c906108c | 20613 | |
c6da4cef DE |
20614 | /* Subroutine of dwarf_decode_lines to simplify it. |
20615 | Return the file name of the psymtab for included file FILE_INDEX | |
20616 | in line header LH of PST. | |
20617 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20618 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20619 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20620 | |
d521ce57 | 20621 | static const char * |
c6da4cef DE |
20622 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20623 | const struct partial_symtab *pst, | |
c89b44cd TT |
20624 | const char *comp_dir, |
20625 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20626 | { |
8c43009f | 20627 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20628 | const char *include_name = fe.name; |
20629 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20630 | const char *pst_filename; |
c6da4cef DE |
20631 | int file_is_pst; |
20632 | ||
8c43009f | 20633 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20634 | |
c89b44cd | 20635 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20636 | if (!IS_ABSOLUTE_PATH (include_name) |
20637 | && (dir_name != NULL || comp_dir != NULL)) | |
20638 | { | |
20639 | /* Avoid creating a duplicate psymtab for PST. | |
20640 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20641 | Before we do the comparison, however, we need to account | |
20642 | for DIR_NAME and COMP_DIR. | |
20643 | First prepend dir_name (if non-NULL). If we still don't | |
20644 | have an absolute path prepend comp_dir (if non-NULL). | |
20645 | However, the directory we record in the include-file's | |
20646 | psymtab does not contain COMP_DIR (to match the | |
20647 | corresponding symtab(s)). | |
20648 | ||
20649 | Example: | |
20650 | ||
20651 | bash$ cd /tmp | |
20652 | bash$ gcc -g ./hello.c | |
20653 | include_name = "hello.c" | |
20654 | dir_name = "." | |
20655 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20656 | DW_AT_name = "./hello.c" |
20657 | ||
20658 | */ | |
c6da4cef DE |
20659 | |
20660 | if (dir_name != NULL) | |
20661 | { | |
c89b44cd TT |
20662 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20663 | include_name, (char *) NULL)); | |
20664 | include_name = name_holder->get (); | |
c6da4cef | 20665 | include_name_to_compare = include_name; |
c6da4cef DE |
20666 | } |
20667 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20668 | { | |
c89b44cd TT |
20669 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20670 | include_name, (char *) NULL)); | |
20671 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20672 | } |
20673 | } | |
20674 | ||
20675 | pst_filename = pst->filename; | |
c89b44cd | 20676 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20677 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20678 | { | |
c89b44cd TT |
20679 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20680 | pst_filename, (char *) NULL)); | |
20681 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20682 | } |
20683 | ||
1e3fad37 | 20684 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20685 | |
c6da4cef DE |
20686 | if (file_is_pst) |
20687 | return NULL; | |
20688 | return include_name; | |
20689 | } | |
20690 | ||
d9b3de22 DE |
20691 | /* State machine to track the state of the line number program. */ |
20692 | ||
6f77053d | 20693 | class lnp_state_machine |
d9b3de22 | 20694 | { |
6f77053d PA |
20695 | public: |
20696 | /* Initialize a machine state for the start of a line number | |
20697 | program. */ | |
804d2729 TT |
20698 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20699 | bool record_lines_p); | |
6f77053d | 20700 | |
8c43009f PA |
20701 | file_entry *current_file () |
20702 | { | |
20703 | /* lh->file_names is 0-based, but the file name numbers in the | |
20704 | statement program are 1-based. */ | |
6f77053d PA |
20705 | return m_line_header->file_name_at (m_file); |
20706 | } | |
20707 | ||
20708 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20709 | we're processing the end of a sequence. */ | |
20710 | void record_line (bool end_sequence); | |
20711 | ||
7ab6656f OJ |
20712 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20713 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20714 | void check_line_address (struct dwarf2_cu *cu, |
20715 | const gdb_byte *line_ptr, | |
7ab6656f | 20716 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20717 | |
20718 | void handle_set_discriminator (unsigned int discriminator) | |
20719 | { | |
20720 | m_discriminator = discriminator; | |
20721 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20722 | } | |
20723 | ||
20724 | /* Handle DW_LNE_set_address. */ | |
20725 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20726 | { | |
20727 | m_op_index = 0; | |
20728 | address += baseaddr; | |
20729 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20730 | } | |
20731 | ||
20732 | /* Handle DW_LNS_advance_pc. */ | |
20733 | void handle_advance_pc (CORE_ADDR adjust); | |
20734 | ||
20735 | /* Handle a special opcode. */ | |
20736 | void handle_special_opcode (unsigned char op_code); | |
20737 | ||
20738 | /* Handle DW_LNS_advance_line. */ | |
20739 | void handle_advance_line (int line_delta) | |
20740 | { | |
20741 | advance_line (line_delta); | |
20742 | } | |
20743 | ||
20744 | /* Handle DW_LNS_set_file. */ | |
20745 | void handle_set_file (file_name_index file); | |
20746 | ||
20747 | /* Handle DW_LNS_negate_stmt. */ | |
20748 | void handle_negate_stmt () | |
20749 | { | |
20750 | m_is_stmt = !m_is_stmt; | |
20751 | } | |
20752 | ||
20753 | /* Handle DW_LNS_const_add_pc. */ | |
20754 | void handle_const_add_pc (); | |
20755 | ||
20756 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20757 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20758 | { | |
20759 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20760 | m_op_index = 0; | |
20761 | } | |
20762 | ||
20763 | /* Handle DW_LNS_copy. */ | |
20764 | void handle_copy () | |
20765 | { | |
20766 | record_line (false); | |
20767 | m_discriminator = 0; | |
20768 | } | |
20769 | ||
20770 | /* Handle DW_LNE_end_sequence. */ | |
20771 | void handle_end_sequence () | |
20772 | { | |
804d2729 | 20773 | m_currently_recording_lines = true; |
6f77053d PA |
20774 | } |
20775 | ||
20776 | private: | |
20777 | /* Advance the line by LINE_DELTA. */ | |
20778 | void advance_line (int line_delta) | |
20779 | { | |
20780 | m_line += line_delta; | |
20781 | ||
20782 | if (line_delta != 0) | |
20783 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20784 | } |
20785 | ||
804d2729 TT |
20786 | struct dwarf2_cu *m_cu; |
20787 | ||
6f77053d PA |
20788 | gdbarch *m_gdbarch; |
20789 | ||
20790 | /* True if we're recording lines. | |
20791 | Otherwise we're building partial symtabs and are just interested in | |
20792 | finding include files mentioned by the line number program. */ | |
20793 | bool m_record_lines_p; | |
20794 | ||
8c43009f | 20795 | /* The line number header. */ |
6f77053d | 20796 | line_header *m_line_header; |
8c43009f | 20797 | |
6f77053d PA |
20798 | /* These are part of the standard DWARF line number state machine, |
20799 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20800 | |
6f77053d | 20801 | unsigned char m_op_index = 0; |
8c43009f | 20802 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20803 | file_name_index m_file = (file_name_index) 1; |
20804 | unsigned int m_line = 1; | |
20805 | ||
20806 | /* These are initialized in the constructor. */ | |
20807 | ||
20808 | CORE_ADDR m_address; | |
20809 | bool m_is_stmt; | |
20810 | unsigned int m_discriminator; | |
d9b3de22 DE |
20811 | |
20812 | /* Additional bits of state we need to track. */ | |
20813 | ||
20814 | /* The last file that we called dwarf2_start_subfile for. | |
20815 | This is only used for TLLs. */ | |
6f77053d | 20816 | unsigned int m_last_file = 0; |
d9b3de22 | 20817 | /* The last file a line number was recorded for. */ |
6f77053d | 20818 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20819 | |
804d2729 TT |
20820 | /* When true, record the lines we decode. */ |
20821 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20822 | |
20823 | /* The last line number that was recorded, used to coalesce | |
20824 | consecutive entries for the same line. This can happen, for | |
20825 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20826 | unsigned int m_last_line = 0; |
20827 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20828 | }; |
d9b3de22 | 20829 | |
6f77053d PA |
20830 | void |
20831 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20832 | { | |
20833 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20834 | / m_line_header->maximum_ops_per_instruction) | |
20835 | * m_line_header->minimum_instruction_length); | |
20836 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20837 | m_op_index = ((m_op_index + adjust) | |
20838 | % m_line_header->maximum_ops_per_instruction); | |
20839 | } | |
d9b3de22 | 20840 | |
6f77053d PA |
20841 | void |
20842 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20843 | { |
6f77053d PA |
20844 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20845 | CORE_ADDR addr_adj = (((m_op_index | |
20846 | + (adj_opcode / m_line_header->line_range)) | |
20847 | / m_line_header->maximum_ops_per_instruction) | |
20848 | * m_line_header->minimum_instruction_length); | |
20849 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20850 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20851 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20852 | |
6f77053d PA |
20853 | int line_delta = (m_line_header->line_base |
20854 | + (adj_opcode % m_line_header->line_range)); | |
20855 | advance_line (line_delta); | |
20856 | record_line (false); | |
20857 | m_discriminator = 0; | |
20858 | } | |
d9b3de22 | 20859 | |
6f77053d PA |
20860 | void |
20861 | lnp_state_machine::handle_set_file (file_name_index file) | |
20862 | { | |
20863 | m_file = file; | |
20864 | ||
20865 | const file_entry *fe = current_file (); | |
20866 | if (fe == NULL) | |
20867 | dwarf2_debug_line_missing_file_complaint (); | |
20868 | else if (m_record_lines_p) | |
20869 | { | |
20870 | const char *dir = fe->include_dir (m_line_header); | |
20871 | ||
c24bdb02 | 20872 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20873 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20874 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20875 | } |
20876 | } | |
20877 | ||
20878 | void | |
20879 | lnp_state_machine::handle_const_add_pc () | |
20880 | { | |
20881 | CORE_ADDR adjust | |
20882 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20883 | ||
20884 | CORE_ADDR addr_adj | |
20885 | = (((m_op_index + adjust) | |
20886 | / m_line_header->maximum_ops_per_instruction) | |
20887 | * m_line_header->minimum_instruction_length); | |
20888 | ||
20889 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20890 | m_op_index = ((m_op_index + adjust) | |
20891 | % m_line_header->maximum_ops_per_instruction); | |
20892 | } | |
d9b3de22 | 20893 | |
a05a36a5 DE |
20894 | /* Return non-zero if we should add LINE to the line number table. |
20895 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20896 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20897 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20898 | had a non-zero discriminator. | |
20899 | ||
20900 | We have to be careful in the presence of discriminators. | |
20901 | E.g., for this line: | |
20902 | ||
20903 | for (i = 0; i < 100000; i++); | |
20904 | ||
20905 | clang can emit four line number entries for that one line, | |
20906 | each with a different discriminator. | |
20907 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20908 | ||
20909 | However, we want gdb to coalesce all four entries into one. | |
20910 | Otherwise the user could stepi into the middle of the line and | |
20911 | gdb would get confused about whether the pc really was in the | |
20912 | middle of the line. | |
20913 | ||
20914 | Things are further complicated by the fact that two consecutive | |
20915 | line number entries for the same line is a heuristic used by gcc | |
20916 | to denote the end of the prologue. So we can't just discard duplicate | |
20917 | entries, we have to be selective about it. The heuristic we use is | |
20918 | that we only collapse consecutive entries for the same line if at least | |
20919 | one of those entries has a non-zero discriminator. PR 17276. | |
20920 | ||
20921 | Note: Addresses in the line number state machine can never go backwards | |
20922 | within one sequence, thus this coalescing is ok. */ | |
20923 | ||
20924 | static int | |
804d2729 TT |
20925 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20926 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20927 | int line_has_non_zero_discriminator, |
20928 | struct subfile *last_subfile) | |
20929 | { | |
c24bdb02 | 20930 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20931 | return 1; |
20932 | if (line != last_line) | |
20933 | return 1; | |
20934 | /* Same line for the same file that we've seen already. | |
20935 | As a last check, for pr 17276, only record the line if the line | |
20936 | has never had a non-zero discriminator. */ | |
20937 | if (!line_has_non_zero_discriminator) | |
20938 | return 1; | |
20939 | return 0; | |
20940 | } | |
20941 | ||
804d2729 TT |
20942 | /* Use the CU's builder to record line number LINE beginning at |
20943 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20944 | |
20945 | static void | |
d9b3de22 DE |
20946 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20947 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20948 | struct dwarf2_cu *cu) |
252a6764 DE |
20949 | { |
20950 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20951 | ||
27e0867f DE |
20952 | if (dwarf_line_debug) |
20953 | { | |
20954 | fprintf_unfiltered (gdb_stdlog, | |
20955 | "Recording line %u, file %s, address %s\n", | |
20956 | line, lbasename (subfile->name), | |
20957 | paddress (gdbarch, address)); | |
20958 | } | |
20959 | ||
804d2729 | 20960 | if (cu != nullptr) |
c24bdb02 | 20961 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
20962 | } |
20963 | ||
20964 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20965 | Mark the end of a set of line number records. | |
d9b3de22 | 20966 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20967 | If SUBFILE is NULL the request is ignored. */ |
20968 | ||
20969 | static void | |
20970 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20971 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20972 | { |
27e0867f DE |
20973 | if (subfile == NULL) |
20974 | return; | |
20975 | ||
20976 | if (dwarf_line_debug) | |
20977 | { | |
20978 | fprintf_unfiltered (gdb_stdlog, | |
20979 | "Finishing current line, file %s, address %s\n", | |
20980 | lbasename (subfile->name), | |
20981 | paddress (gdbarch, address)); | |
20982 | } | |
20983 | ||
804d2729 | 20984 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20985 | } |
20986 | ||
6f77053d PA |
20987 | void |
20988 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20989 | { |
d9b3de22 DE |
20990 | if (dwarf_line_debug) |
20991 | { | |
20992 | fprintf_unfiltered (gdb_stdlog, | |
20993 | "Processing actual line %u: file %u," | |
20994 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20995 | m_line, to_underlying (m_file), |
20996 | paddress (m_gdbarch, m_address), | |
20997 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20998 | } |
20999 | ||
6f77053d | 21000 | file_entry *fe = current_file (); |
8c43009f PA |
21001 | |
21002 | if (fe == NULL) | |
d9b3de22 DE |
21003 | dwarf2_debug_line_missing_file_complaint (); |
21004 | /* For now we ignore lines not starting on an instruction boundary. | |
21005 | But not when processing end_sequence for compatibility with the | |
21006 | previous version of the code. */ | |
6f77053d | 21007 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21008 | { |
8c43009f | 21009 | fe->included_p = 1; |
c258c396 | 21010 | if (m_record_lines_p && (producer_is_codewarrior (m_cu) || m_is_stmt)) |
d9b3de22 | 21011 | { |
c24bdb02 | 21012 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 21013 | || end_sequence) |
d9b3de22 | 21014 | { |
804d2729 TT |
21015 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21016 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21017 | } |
21018 | ||
21019 | if (!end_sequence) | |
21020 | { | |
804d2729 | 21021 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21022 | m_line_has_non_zero_discriminator, |
21023 | m_last_subfile)) | |
d9b3de22 | 21024 | { |
c24bdb02 | 21025 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21026 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21027 | builder->get_current_subfile (), |
6f77053d | 21028 | m_line, m_address, |
804d2729 | 21029 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21030 | } |
c24bdb02 | 21031 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21032 | m_last_line = m_line; |
d9b3de22 DE |
21033 | } |
21034 | } | |
21035 | } | |
21036 | } | |
21037 | ||
804d2729 TT |
21038 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21039 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21040 | { |
804d2729 | 21041 | m_cu = cu; |
6f77053d PA |
21042 | m_gdbarch = arch; |
21043 | m_record_lines_p = record_lines_p; | |
21044 | m_line_header = lh; | |
d9b3de22 | 21045 | |
804d2729 | 21046 | m_currently_recording_lines = true; |
d9b3de22 | 21047 | |
d9b3de22 DE |
21048 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21049 | was a line entry for it so that the backend has a chance to adjust it | |
21050 | and also record it in case it needs it. This is currently used by MIPS | |
21051 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21052 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21053 | m_is_stmt = lh->default_is_stmt; | |
21054 | m_discriminator = 0; | |
252a6764 DE |
21055 | } |
21056 | ||
6f77053d PA |
21057 | void |
21058 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21059 | const gdb_byte *line_ptr, | |
7ab6656f | 21060 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21061 | { |
7ab6656f OJ |
21062 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
21063 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
21064 | values of zero to preserve GDB's previous behaviour which is to handle | |
21065 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 21066 | |
7ab6656f | 21067 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
21068 | { |
21069 | /* This line table is for a function which has been | |
21070 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21071 | ||
518817b3 | 21072 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21073 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21074 | ||
b98664d3 | 21075 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21076 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21077 | m_currently_recording_lines = false; |
21078 | /* Note: m_currently_recording_lines is left as false until we see | |
21079 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21080 | } |
21081 | } | |
21082 | ||
f3f5162e | 21083 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21084 | Process the line number information in LH. |
21085 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21086 | program in order to set included_p for every referenced header. */ | |
debd256d | 21087 | |
c906108c | 21088 | static void |
43f3e411 DE |
21089 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21090 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21091 | { |
d521ce57 TT |
21092 | const gdb_byte *line_ptr, *extended_end; |
21093 | const gdb_byte *line_end; | |
a8c50c1f | 21094 | unsigned int bytes_read, extended_len; |
699ca60a | 21095 | unsigned char op_code, extended_op; |
e142c38c | 21096 | CORE_ADDR baseaddr; |
518817b3 | 21097 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21098 | bfd *abfd = objfile->obfd; |
fbf65064 | 21099 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21100 | /* True if we're recording line info (as opposed to building partial |
21101 | symtabs and just interested in finding include files mentioned by | |
21102 | the line number program). */ | |
21103 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
21104 | |
21105 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21106 | |
debd256d JB |
21107 | line_ptr = lh->statement_program_start; |
21108 | line_end = lh->statement_program_end; | |
c906108c SS |
21109 | |
21110 | /* Read the statement sequences until there's nothing left. */ | |
21111 | while (line_ptr < line_end) | |
21112 | { | |
6f77053d PA |
21113 | /* The DWARF line number program state machine. Reset the state |
21114 | machine at the start of each sequence. */ | |
804d2729 | 21115 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21116 | bool end_sequence = false; |
d9b3de22 | 21117 | |
8c43009f | 21118 | if (record_lines_p) |
c906108c | 21119 | { |
8c43009f PA |
21120 | /* Start a subfile for the current file of the state |
21121 | machine. */ | |
21122 | const file_entry *fe = state_machine.current_file (); | |
21123 | ||
21124 | if (fe != NULL) | |
804d2729 | 21125 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21126 | } |
21127 | ||
a738430d | 21128 | /* Decode the table. */ |
d9b3de22 | 21129 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21130 | { |
21131 | op_code = read_1_byte (abfd, line_ptr); | |
21132 | line_ptr += 1; | |
9aa1fe7e | 21133 | |
debd256d | 21134 | if (op_code >= lh->opcode_base) |
6e70227d | 21135 | { |
8e07a239 | 21136 | /* Special opcode. */ |
6f77053d | 21137 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21138 | } |
21139 | else switch (op_code) | |
c906108c SS |
21140 | { |
21141 | case DW_LNS_extended_op: | |
3e43a32a MS |
21142 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21143 | &bytes_read); | |
473b7be6 | 21144 | line_ptr += bytes_read; |
a8c50c1f | 21145 | extended_end = line_ptr + extended_len; |
c906108c SS |
21146 | extended_op = read_1_byte (abfd, line_ptr); |
21147 | line_ptr += 1; | |
21148 | switch (extended_op) | |
21149 | { | |
21150 | case DW_LNE_end_sequence: | |
6f77053d PA |
21151 | state_machine.handle_end_sequence (); |
21152 | end_sequence = true; | |
c906108c SS |
21153 | break; |
21154 | case DW_LNE_set_address: | |
d9b3de22 DE |
21155 | { |
21156 | CORE_ADDR address | |
21157 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21158 | line_ptr += bytes_read; |
6f77053d PA |
21159 | |
21160 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21161 | lowpc - baseaddr, address); |
6f77053d | 21162 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21163 | } |
c906108c SS |
21164 | break; |
21165 | case DW_LNE_define_file: | |
debd256d | 21166 | { |
d521ce57 | 21167 | const char *cur_file; |
ecfb656c PA |
21168 | unsigned int mod_time, length; |
21169 | dir_index dindex; | |
6e70227d | 21170 | |
3e43a32a MS |
21171 | cur_file = read_direct_string (abfd, line_ptr, |
21172 | &bytes_read); | |
debd256d | 21173 | line_ptr += bytes_read; |
ecfb656c | 21174 | dindex = (dir_index) |
debd256d JB |
21175 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21176 | line_ptr += bytes_read; | |
21177 | mod_time = | |
21178 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21179 | line_ptr += bytes_read; | |
21180 | length = | |
21181 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21182 | line_ptr += bytes_read; | |
ecfb656c | 21183 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21184 | } |
c906108c | 21185 | break; |
d0c6ba3d | 21186 | case DW_LNE_set_discriminator: |
6f77053d PA |
21187 | { |
21188 | /* The discriminator is not interesting to the | |
21189 | debugger; just ignore it. We still need to | |
21190 | check its value though: | |
21191 | if there are consecutive entries for the same | |
21192 | (non-prologue) line we want to coalesce them. | |
21193 | PR 17276. */ | |
21194 | unsigned int discr | |
21195 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21196 | line_ptr += bytes_read; | |
21197 | ||
21198 | state_machine.handle_set_discriminator (discr); | |
21199 | } | |
d0c6ba3d | 21200 | break; |
c906108c | 21201 | default: |
b98664d3 | 21202 | complaint (_("mangled .debug_line section")); |
debd256d | 21203 | return; |
c906108c | 21204 | } |
a8c50c1f DJ |
21205 | /* Make sure that we parsed the extended op correctly. If e.g. |
21206 | we expected a different address size than the producer used, | |
21207 | we may have read the wrong number of bytes. */ | |
21208 | if (line_ptr != extended_end) | |
21209 | { | |
b98664d3 | 21210 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21211 | return; |
21212 | } | |
c906108c SS |
21213 | break; |
21214 | case DW_LNS_copy: | |
6f77053d | 21215 | state_machine.handle_copy (); |
c906108c SS |
21216 | break; |
21217 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21218 | { |
21219 | CORE_ADDR adjust | |
21220 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21221 | line_ptr += bytes_read; |
6f77053d PA |
21222 | |
21223 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21224 | } |
c906108c SS |
21225 | break; |
21226 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21227 | { |
21228 | int line_delta | |
21229 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21230 | line_ptr += bytes_read; |
6f77053d PA |
21231 | |
21232 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21233 | } |
c906108c SS |
21234 | break; |
21235 | case DW_LNS_set_file: | |
d9b3de22 | 21236 | { |
6f77053d | 21237 | file_name_index file |
ecfb656c PA |
21238 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21239 | &bytes_read); | |
d9b3de22 | 21240 | line_ptr += bytes_read; |
8c43009f | 21241 | |
6f77053d | 21242 | state_machine.handle_set_file (file); |
d9b3de22 | 21243 | } |
c906108c SS |
21244 | break; |
21245 | case DW_LNS_set_column: | |
0ad93d4f | 21246 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21247 | line_ptr += bytes_read; |
21248 | break; | |
21249 | case DW_LNS_negate_stmt: | |
6f77053d | 21250 | state_machine.handle_negate_stmt (); |
c906108c SS |
21251 | break; |
21252 | case DW_LNS_set_basic_block: | |
c906108c | 21253 | break; |
c2c6d25f JM |
21254 | /* Add to the address register of the state machine the |
21255 | address increment value corresponding to special opcode | |
a738430d MK |
21256 | 255. I.e., this value is scaled by the minimum |
21257 | instruction length since special opcode 255 would have | |
b021a221 | 21258 | scaled the increment. */ |
c906108c | 21259 | case DW_LNS_const_add_pc: |
6f77053d | 21260 | state_machine.handle_const_add_pc (); |
c906108c SS |
21261 | break; |
21262 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21263 | { |
6f77053d | 21264 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21265 | line_ptr += 2; |
6f77053d PA |
21266 | |
21267 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21268 | } |
c906108c | 21269 | break; |
9aa1fe7e | 21270 | default: |
a738430d MK |
21271 | { |
21272 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21273 | int i; |
a738430d | 21274 | |
debd256d | 21275 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21276 | { |
21277 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21278 | line_ptr += bytes_read; | |
21279 | } | |
21280 | } | |
c906108c SS |
21281 | } |
21282 | } | |
d9b3de22 DE |
21283 | |
21284 | if (!end_sequence) | |
21285 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21286 | ||
21287 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21288 | in which case we still finish recording the last line). */ | |
6f77053d | 21289 | state_machine.record_line (true); |
c906108c | 21290 | } |
f3f5162e DE |
21291 | } |
21292 | ||
21293 | /* Decode the Line Number Program (LNP) for the given line_header | |
21294 | structure and CU. The actual information extracted and the type | |
21295 | of structures created from the LNP depends on the value of PST. | |
21296 | ||
21297 | 1. If PST is NULL, then this procedure uses the data from the program | |
21298 | to create all necessary symbol tables, and their linetables. | |
21299 | ||
21300 | 2. If PST is not NULL, this procedure reads the program to determine | |
21301 | the list of files included by the unit represented by PST, and | |
21302 | builds all the associated partial symbol tables. | |
21303 | ||
21304 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21305 | It is used for relative paths in the line table. | |
21306 | NOTE: When processing partial symtabs (pst != NULL), | |
21307 | comp_dir == pst->dirname. | |
21308 | ||
21309 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21310 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21311 | symtab we don't use it in the name of the psymtabs we create. | |
21312 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21313 | A good testcase for this is mb-inline.exp. |
21314 | ||
527f3840 JK |
21315 | LOWPC is the lowest address in CU (or 0 if not known). |
21316 | ||
21317 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21318 | for its PC<->lines mapping information. Otherwise only the filename | |
21319 | table is read in. */ | |
f3f5162e DE |
21320 | |
21321 | static void | |
21322 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21323 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21324 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21325 | { |
518817b3 | 21326 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21327 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21328 | |
527f3840 JK |
21329 | if (decode_mapping) |
21330 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21331 | |
21332 | if (decode_for_pst_p) | |
21333 | { | |
21334 | int file_index; | |
21335 | ||
21336 | /* Now that we're done scanning the Line Header Program, we can | |
21337 | create the psymtab of each included file. */ | |
fff8551c | 21338 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21339 | if (lh->file_names[file_index].included_p == 1) |
21340 | { | |
c89b44cd | 21341 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21342 | const char *include_name = |
c89b44cd TT |
21343 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21344 | &name_holder); | |
c6da4cef | 21345 | if (include_name != NULL) |
aaa75496 JB |
21346 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21347 | } | |
21348 | } | |
cb1df416 DJ |
21349 | else |
21350 | { | |
21351 | /* Make sure a symtab is created for every file, even files | |
21352 | which contain only variables (i.e. no code with associated | |
21353 | line numbers). */ | |
c24bdb02 KS |
21354 | buildsym_compunit *builder = cu->get_builder (); |
21355 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21356 | int i; |
cb1df416 | 21357 | |
fff8551c | 21358 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21359 | { |
8c43009f | 21360 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21361 | |
804d2729 | 21362 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
cb1df416 | 21363 | |
c24bdb02 | 21364 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21365 | { |
c24bdb02 | 21366 | builder->get_current_subfile ()->symtab |
804d2729 | 21367 | = allocate_symtab (cust, |
c24bdb02 | 21368 | builder->get_current_subfile ()->name); |
43f3e411 | 21369 | } |
c24bdb02 | 21370 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21371 | } |
21372 | } | |
c906108c SS |
21373 | } |
21374 | ||
21375 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21376 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21377 | or NULL if not known. |
c906108c SS |
21378 | This routine tries to keep line numbers from identical absolute and |
21379 | relative file names in a common subfile. | |
21380 | ||
21381 | Using the `list' example from the GDB testsuite, which resides in | |
21382 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21383 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21384 | ||
c5aa993b | 21385 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21386 | DW_AT_comp_dir: /compdir |
357e46e7 | 21387 | files.files[0].name: list0.h |
c5aa993b | 21388 | files.files[0].dir: /srcdir |
357e46e7 | 21389 | files.files[1].name: list0.c |
c5aa993b | 21390 | files.files[1].dir: /srcdir |
c906108c SS |
21391 | |
21392 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21393 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21394 | start_subfile will ensure that this happens provided that we pass the | |
21395 | concatenation of files.files[1].dir and files.files[1].name as the | |
21396 | subfile's name. */ | |
c906108c SS |
21397 | |
21398 | static void | |
804d2729 TT |
21399 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21400 | const char *dirname) | |
c906108c | 21401 | { |
d521ce57 | 21402 | char *copy = NULL; |
4f1520fb | 21403 | |
4d663531 | 21404 | /* In order not to lose the line information directory, |
4f1520fb FR |
21405 | we concatenate it to the filename when it makes sense. |
21406 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21407 | information): ``The directory index is ignored for file names | |
21408 | that represent full path names''. Thus ignoring dirname in the | |
21409 | `else' branch below isn't an issue. */ | |
c906108c | 21410 | |
d5166ae1 | 21411 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21412 | { |
21413 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21414 | filename = copy; | |
21415 | } | |
c906108c | 21416 | |
c24bdb02 | 21417 | cu->get_builder ()->start_subfile (filename); |
4f1520fb | 21418 | |
d521ce57 TT |
21419 | if (copy != NULL) |
21420 | xfree (copy); | |
c906108c SS |
21421 | } |
21422 | ||
804d2729 TT |
21423 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21424 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21425 | |
c24bdb02 KS |
21426 | struct compunit_symtab * |
21427 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21428 | CORE_ADDR low_pc) | |
f4dc4d17 | 21429 | { |
c24bdb02 | 21430 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21431 | |
c24bdb02 KS |
21432 | m_builder.reset (new struct buildsym_compunit |
21433 | (per_cu->dwarf2_per_objfile->objfile, | |
21434 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21435 | |
c24bdb02 | 21436 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21437 | |
c24bdb02 KS |
21438 | get_builder ()->record_debugformat ("DWARF 2"); |
21439 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21440 | |
c24bdb02 | 21441 | processing_has_namespace_info = false; |
43f3e411 | 21442 | |
c24bdb02 | 21443 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21444 | } |
21445 | ||
4c2df51b DJ |
21446 | static void |
21447 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21448 | struct dwarf2_cu *cu) |
4c2df51b | 21449 | { |
518817b3 | 21450 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21451 | struct comp_unit_head *cu_header = &cu->header; |
21452 | ||
4c2df51b DJ |
21453 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21454 | code here to turn a symbol with DW_AT_external and a | |
21455 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21456 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21457 | with some versions of binutils) where shared libraries could have | |
21458 | relocations against symbols in their debug information - the | |
21459 | minimal symbol would have the right address, but the debug info | |
21460 | would not. It's no longer necessary, because we will explicitly | |
21461 | apply relocations when we read in the debug information now. */ | |
21462 | ||
21463 | /* A DW_AT_location attribute with no contents indicates that a | |
21464 | variable has been optimized away. */ | |
21465 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21466 | { | |
f1e6e072 | 21467 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21468 | return; |
21469 | } | |
21470 | ||
21471 | /* Handle one degenerate form of location expression specially, to | |
21472 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21473 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21474 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21475 | |
21476 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21477 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21478 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21479 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21480 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21481 | && (DW_BLOCK (attr)->size |
21482 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21483 | { |
891d2f0b | 21484 | unsigned int dummy; |
4c2df51b | 21485 | |
3019eac3 DE |
21486 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21487 | SYMBOL_VALUE_ADDRESS (sym) = | |
21488 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21489 | else | |
21490 | SYMBOL_VALUE_ADDRESS (sym) = | |
21491 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21492 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21493 | fixup_symbol_section (sym, objfile); |
21494 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21495 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21496 | return; |
21497 | } | |
21498 | ||
21499 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21500 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21501 | (i.e. when the value of a register or memory location is | |
21502 | referenced, or a thread-local block, etc.). Then again, it might | |
21503 | not be worthwhile. I'm assuming that it isn't unless performance | |
21504 | or memory numbers show me otherwise. */ | |
21505 | ||
f1e6e072 | 21506 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21507 | |
f1e6e072 | 21508 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21509 | cu->has_loclist = true; |
4c2df51b DJ |
21510 | } |
21511 | ||
c906108c SS |
21512 | /* Given a pointer to a DWARF information entry, figure out if we need |
21513 | to make a symbol table entry for it, and if so, create a new entry | |
21514 | and return a pointer to it. | |
21515 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21516 | used the passed type. |
21517 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21518 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21519 | |
21520 | static struct symbol * | |
5e2db402 TT |
21521 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21522 | struct symbol *space) | |
c906108c | 21523 | { |
518817b3 SM |
21524 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21525 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21526 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21527 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21528 | struct symbol *sym = NULL; |
15d034d0 | 21529 | const char *name; |
c906108c SS |
21530 | struct attribute *attr = NULL; |
21531 | struct attribute *attr2 = NULL; | |
e142c38c | 21532 | CORE_ADDR baseaddr; |
e37fd15a SW |
21533 | struct pending **list_to_add = NULL; |
21534 | ||
edb3359d | 21535 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21536 | |
21537 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21538 | |
94af9270 | 21539 | name = dwarf2_name (die, cu); |
c906108c SS |
21540 | if (name) |
21541 | { | |
94af9270 | 21542 | const char *linkagename; |
34eaf542 | 21543 | int suppress_add = 0; |
94af9270 | 21544 | |
34eaf542 TT |
21545 | if (space) |
21546 | sym = space; | |
21547 | else | |
e623cf5d | 21548 | sym = allocate_symbol (objfile); |
c906108c | 21549 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21550 | |
21551 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21552 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21553 | linkagename = dwarf2_physname (name, die, cu); |
21554 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21555 | |
f55ee35c JK |
21556 | /* Fortran does not have mangling standard and the mangling does differ |
21557 | between gfortran, iFort etc. */ | |
21558 | if (cu->language == language_fortran | |
b250c185 | 21559 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21560 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21561 | dwarf2_full_name (name, die, cu), |
29df156d | 21562 | NULL); |
f55ee35c | 21563 | |
c906108c | 21564 | /* Default assumptions. |
c5aa993b | 21565 | Use the passed type or decode it from the die. */ |
176620f1 | 21566 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21567 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21568 | if (type != NULL) |
21569 | SYMBOL_TYPE (sym) = type; | |
21570 | else | |
e7c27a73 | 21571 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21572 | attr = dwarf2_attr (die, |
21573 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21574 | cu); | |
c906108c SS |
21575 | if (attr) |
21576 | { | |
21577 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21578 | } | |
cb1df416 | 21579 | |
edb3359d DJ |
21580 | attr = dwarf2_attr (die, |
21581 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21582 | cu); | |
cb1df416 DJ |
21583 | if (attr) |
21584 | { | |
ecfb656c | 21585 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21586 | struct file_entry *fe; |
9a619af0 | 21587 | |
ecfb656c PA |
21588 | if (cu->line_header != NULL) |
21589 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21590 | else |
21591 | fe = NULL; | |
21592 | ||
21593 | if (fe == NULL) | |
b98664d3 | 21594 | complaint (_("file index out of range")); |
8c43009f PA |
21595 | else |
21596 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21597 | } |
21598 | ||
c906108c SS |
21599 | switch (die->tag) |
21600 | { | |
21601 | case DW_TAG_label: | |
e142c38c | 21602 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21603 | if (attr) |
3e29f34a MR |
21604 | { |
21605 | CORE_ADDR addr; | |
21606 | ||
21607 | addr = attr_value_as_address (attr); | |
21608 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21609 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21610 | } | |
0f5238ed TT |
21611 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21612 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21613 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21614 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21615 | break; |
21616 | case DW_TAG_subprogram: | |
21617 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21618 | finish_block. */ | |
f1e6e072 | 21619 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21620 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21621 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21622 | || cu->language == language_ada) | |
c906108c | 21623 | { |
2cfa0c8d JB |
21624 | /* Subprograms marked external are stored as a global symbol. |
21625 | Ada subprograms, whether marked external or not, are always | |
21626 | stored as a global symbol, because we want to be able to | |
21627 | access them globally. For instance, we want to be able | |
21628 | to break on a nested subprogram without having to | |
21629 | specify the context. */ | |
c24bdb02 | 21630 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21631 | } |
21632 | else | |
21633 | { | |
e37fd15a | 21634 | list_to_add = cu->list_in_scope; |
c906108c SS |
21635 | } |
21636 | break; | |
edb3359d DJ |
21637 | case DW_TAG_inlined_subroutine: |
21638 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21639 | finish_block. */ | |
f1e6e072 | 21640 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21641 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21642 | list_to_add = cu->list_in_scope; |
edb3359d | 21643 | break; |
34eaf542 TT |
21644 | case DW_TAG_template_value_param: |
21645 | suppress_add = 1; | |
21646 | /* Fall through. */ | |
72929c62 | 21647 | case DW_TAG_constant: |
c906108c | 21648 | case DW_TAG_variable: |
254e6b9e | 21649 | case DW_TAG_member: |
0963b4bd MS |
21650 | /* Compilation with minimal debug info may result in |
21651 | variables with missing type entries. Change the | |
21652 | misleading `void' type to something sensible. */ | |
c906108c | 21653 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21654 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21655 | |
e142c38c | 21656 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21657 | /* In the case of DW_TAG_member, we should only be called for |
21658 | static const members. */ | |
21659 | if (die->tag == DW_TAG_member) | |
21660 | { | |
3863f96c DE |
21661 | /* dwarf2_add_field uses die_is_declaration, |
21662 | so we do the same. */ | |
254e6b9e DE |
21663 | gdb_assert (die_is_declaration (die, cu)); |
21664 | gdb_assert (attr); | |
21665 | } | |
c906108c SS |
21666 | if (attr) |
21667 | { | |
e7c27a73 | 21668 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21669 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21670 | if (!suppress_add) |
34eaf542 TT |
21671 | { |
21672 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21673 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21674 | else |
e37fd15a | 21675 | list_to_add = cu->list_in_scope; |
34eaf542 | 21676 | } |
c906108c SS |
21677 | break; |
21678 | } | |
e142c38c | 21679 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21680 | if (attr) |
21681 | { | |
e7c27a73 | 21682 | var_decode_location (attr, sym, cu); |
e142c38c | 21683 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21684 | |
21685 | /* Fortran explicitly imports any global symbols to the local | |
21686 | scope by DW_TAG_common_block. */ | |
21687 | if (cu->language == language_fortran && die->parent | |
21688 | && die->parent->tag == DW_TAG_common_block) | |
21689 | attr2 = NULL; | |
21690 | ||
caac4577 JG |
21691 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21692 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21693 | && !dwarf2_per_objfile->has_section_at_zero) | |
21694 | { | |
21695 | /* When a static variable is eliminated by the linker, | |
21696 | the corresponding debug information is not stripped | |
21697 | out, but the variable address is set to null; | |
21698 | do not add such variables into symbol table. */ | |
21699 | } | |
21700 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21701 | { |
f55ee35c JK |
21702 | /* Workaround gfortran PR debug/40040 - it uses |
21703 | DW_AT_location for variables in -fPIC libraries which may | |
21704 | get overriden by other libraries/executable and get | |
21705 | a different address. Resolve it by the minimal symbol | |
21706 | which may come from inferior's executable using copy | |
21707 | relocation. Make this workaround only for gfortran as for | |
21708 | other compilers GDB cannot guess the minimal symbol | |
21709 | Fortran mangling kind. */ | |
21710 | if (cu->language == language_fortran && die->parent | |
21711 | && die->parent->tag == DW_TAG_module | |
21712 | && cu->producer | |
28586665 | 21713 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21714 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21715 | |
1c809c68 TT |
21716 | /* A variable with DW_AT_external is never static, |
21717 | but it may be block-scoped. */ | |
804d2729 | 21718 | list_to_add |
c24bdb02 KS |
21719 | = ((cu->list_in_scope |
21720 | == cu->get_builder ()->get_file_symbols ()) | |
21721 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21722 | : cu->list_in_scope); |
1c809c68 | 21723 | } |
c906108c | 21724 | else |
e37fd15a | 21725 | list_to_add = cu->list_in_scope; |
c906108c SS |
21726 | } |
21727 | else | |
21728 | { | |
21729 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21730 | If it is an external symbol and we have type information |
21731 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21732 | The address of the variable will then be determined from | |
21733 | the minimal symbol table whenever the variable is | |
21734 | referenced. */ | |
e142c38c | 21735 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21736 | |
21737 | /* Fortran explicitly imports any global symbols to the local | |
21738 | scope by DW_TAG_common_block. */ | |
21739 | if (cu->language == language_fortran && die->parent | |
21740 | && die->parent->tag == DW_TAG_common_block) | |
21741 | { | |
21742 | /* SYMBOL_CLASS doesn't matter here because | |
21743 | read_common_block is going to reset it. */ | |
21744 | if (!suppress_add) | |
21745 | list_to_add = cu->list_in_scope; | |
21746 | } | |
21747 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21748 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21749 | { |
0fe7935b DJ |
21750 | /* A variable with DW_AT_external is never static, but it |
21751 | may be block-scoped. */ | |
804d2729 | 21752 | list_to_add |
c24bdb02 KS |
21753 | = ((cu->list_in_scope |
21754 | == cu->get_builder ()->get_file_symbols ()) | |
21755 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21756 | : cu->list_in_scope); |
0fe7935b | 21757 | |
f1e6e072 | 21758 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21759 | } |
442ddf59 JK |
21760 | else if (!die_is_declaration (die, cu)) |
21761 | { | |
21762 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21763 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21764 | if (!suppress_add) |
21765 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21766 | } |
c906108c SS |
21767 | } |
21768 | break; | |
21769 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21770 | { |
21771 | /* If we are inside a function, mark this as an argument. If | |
21772 | not, we might be looking at an argument to an inlined function | |
21773 | when we do not have enough information to show inlined frames; | |
21774 | pretend it's a local variable in that case so that the user can | |
21775 | still see it. */ | |
804d2729 | 21776 | struct context_stack *curr |
c24bdb02 | 21777 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21778 | if (curr != nullptr && curr->name != nullptr) |
21779 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21780 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21781 | if (attr) | |
21782 | { | |
21783 | var_decode_location (attr, sym, cu); | |
21784 | } | |
21785 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21786 | if (attr) | |
21787 | { | |
21788 | dwarf2_const_value (attr, sym, cu); | |
21789 | } | |
f346a30d | 21790 | |
a60f3166 TT |
21791 | list_to_add = cu->list_in_scope; |
21792 | } | |
c906108c SS |
21793 | break; |
21794 | case DW_TAG_unspecified_parameters: | |
21795 | /* From varargs functions; gdb doesn't seem to have any | |
21796 | interest in this information, so just ignore it for now. | |
21797 | (FIXME?) */ | |
21798 | break; | |
34eaf542 TT |
21799 | case DW_TAG_template_type_param: |
21800 | suppress_add = 1; | |
21801 | /* Fall through. */ | |
c906108c | 21802 | case DW_TAG_class_type: |
680b30c7 | 21803 | case DW_TAG_interface_type: |
c906108c SS |
21804 | case DW_TAG_structure_type: |
21805 | case DW_TAG_union_type: | |
72019c9c | 21806 | case DW_TAG_set_type: |
c906108c | 21807 | case DW_TAG_enumeration_type: |
f1e6e072 | 21808 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21809 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21810 | |
63d06c5c | 21811 | { |
9c37b5ae | 21812 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21813 | really ever be static objects: otherwise, if you try |
21814 | to, say, break of a class's method and you're in a file | |
21815 | which doesn't mention that class, it won't work unless | |
21816 | the check for all static symbols in lookup_symbol_aux | |
21817 | saves you. See the OtherFileClass tests in | |
21818 | gdb.c++/namespace.exp. */ | |
21819 | ||
e37fd15a | 21820 | if (!suppress_add) |
34eaf542 | 21821 | { |
c24bdb02 | 21822 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21823 | list_to_add |
c24bdb02 | 21824 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21825 | && cu->language == language_cplus |
c24bdb02 | 21826 | ? builder->get_global_symbols () |
804d2729 | 21827 | : cu->list_in_scope); |
63d06c5c | 21828 | |
64382290 | 21829 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21830 | ... }" also defines a typedef for "foo". */ |
64382290 | 21831 | if (cu->language == language_cplus |
45280282 | 21832 | || cu->language == language_ada |
c44af4eb TT |
21833 | || cu->language == language_d |
21834 | || cu->language == language_rust) | |
64382290 TT |
21835 | { |
21836 | /* The symbol's name is already allocated along | |
21837 | with this objfile, so we don't need to | |
21838 | duplicate it for the type. */ | |
21839 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21840 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21841 | } | |
63d06c5c DC |
21842 | } |
21843 | } | |
c906108c SS |
21844 | break; |
21845 | case DW_TAG_typedef: | |
f1e6e072 | 21846 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21847 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21848 | list_to_add = cu->list_in_scope; |
63d06c5c | 21849 | break; |
c906108c | 21850 | case DW_TAG_base_type: |
a02abb62 | 21851 | case DW_TAG_subrange_type: |
f1e6e072 | 21852 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21853 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21854 | list_to_add = cu->list_in_scope; |
c906108c SS |
21855 | break; |
21856 | case DW_TAG_enumerator: | |
e142c38c | 21857 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21858 | if (attr) |
21859 | { | |
e7c27a73 | 21860 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21861 | } |
63d06c5c DC |
21862 | { |
21863 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21864 | DW_TAG_class_type, etc. block. */ | |
21865 | ||
804d2729 | 21866 | list_to_add |
c24bdb02 | 21867 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21868 | && cu->language == language_cplus |
c24bdb02 | 21869 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21870 | : cu->list_in_scope); |
63d06c5c | 21871 | } |
c906108c | 21872 | break; |
74921315 | 21873 | case DW_TAG_imported_declaration: |
5c4e30ca | 21874 | case DW_TAG_namespace: |
f1e6e072 | 21875 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21876 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21877 | break; |
530e8392 KB |
21878 | case DW_TAG_module: |
21879 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21880 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21881 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21882 | break; |
4357ac6c | 21883 | case DW_TAG_common_block: |
f1e6e072 | 21884 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21885 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21886 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21887 | break; |
c906108c SS |
21888 | default: |
21889 | /* Not a tag we recognize. Hopefully we aren't processing | |
21890 | trash data, but since we must specifically ignore things | |
21891 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21892 | this point. */ |
b98664d3 | 21893 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21894 | dwarf_tag_name (die->tag)); |
c906108c SS |
21895 | break; |
21896 | } | |
df8a16a1 | 21897 | |
e37fd15a SW |
21898 | if (suppress_add) |
21899 | { | |
21900 | sym->hash_next = objfile->template_symbols; | |
21901 | objfile->template_symbols = sym; | |
21902 | list_to_add = NULL; | |
21903 | } | |
21904 | ||
21905 | if (list_to_add != NULL) | |
d3cb6808 | 21906 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21907 | |
df8a16a1 DJ |
21908 | /* For the benefit of old versions of GCC, check for anonymous |
21909 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21910 | if (!cu->processing_has_namespace_info |
94af9270 | 21911 | && cu->language == language_cplus) |
c24bdb02 | 21912 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21913 | } |
21914 | return (sym); | |
21915 | } | |
21916 | ||
98bfdba5 PA |
21917 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21918 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21919 | standard (v4) is not entirely clear about the meaning of using | |
21920 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21921 | wider than the data. The conclusion of a discussion on the DWARF | |
21922 | list was that this is unspecified. We choose to always zero-extend | |
21923 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21924 | |
98bfdba5 | 21925 | static gdb_byte * |
ff39bb5e | 21926 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21927 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21928 | { |
518817b3 | 21929 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21930 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21931 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21932 | LONGEST l = DW_UNSND (attr); |
21933 | ||
21934 | if (bits < sizeof (*value) * 8) | |
21935 | { | |
21936 | l &= ((LONGEST) 1 << bits) - 1; | |
21937 | *value = l; | |
21938 | } | |
21939 | else if (bits == sizeof (*value) * 8) | |
21940 | *value = l; | |
21941 | else | |
21942 | { | |
224c3ddb | 21943 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21944 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21945 | return bytes; | |
21946 | } | |
21947 | ||
21948 | return NULL; | |
21949 | } | |
21950 | ||
21951 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21952 | the value does not fit in *VALUE, set *BYTES - either already | |
21953 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21954 | or, set *BATON, if we translated the constant to a location | |
21955 | expression. */ | |
21956 | ||
21957 | static void | |
ff39bb5e | 21958 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21959 | const char *name, struct obstack *obstack, |
21960 | struct dwarf2_cu *cu, | |
d521ce57 | 21961 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21962 | struct dwarf2_locexpr_baton **baton) |
21963 | { | |
518817b3 | 21964 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21965 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21966 | struct dwarf_block *blk; |
98bfdba5 PA |
21967 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21968 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21969 | ||
21970 | *value = 0; | |
21971 | *bytes = NULL; | |
21972 | *baton = NULL; | |
c906108c SS |
21973 | |
21974 | switch (attr->form) | |
21975 | { | |
21976 | case DW_FORM_addr: | |
336d760d | 21977 | case DW_FORM_addrx: |
3019eac3 | 21978 | case DW_FORM_GNU_addr_index: |
ac56253d | 21979 | { |
ac56253d TT |
21980 | gdb_byte *data; |
21981 | ||
98bfdba5 PA |
21982 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21983 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21984 | cu_header->addr_size, |
98bfdba5 | 21985 | TYPE_LENGTH (type)); |
ac56253d TT |
21986 | /* Symbols of this form are reasonably rare, so we just |
21987 | piggyback on the existing location code rather than writing | |
21988 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21989 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21990 | (*baton)->per_cu = cu->per_cu; |
21991 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21992 | |
98bfdba5 | 21993 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21994 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21995 | (*baton)->data = data; |
ac56253d TT |
21996 | |
21997 | data[0] = DW_OP_addr; | |
21998 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21999 | byte_order, DW_ADDR (attr)); | |
22000 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 22001 | } |
c906108c | 22002 | break; |
4ac36638 | 22003 | case DW_FORM_string: |
93b5768b | 22004 | case DW_FORM_strp: |
cf532bd1 | 22005 | case DW_FORM_strx: |
3019eac3 | 22006 | case DW_FORM_GNU_str_index: |
36586728 | 22007 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
22008 | /* DW_STRING is already allocated on the objfile obstack, point |
22009 | directly to it. */ | |
d521ce57 | 22010 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 22011 | break; |
c906108c SS |
22012 | case DW_FORM_block1: |
22013 | case DW_FORM_block2: | |
22014 | case DW_FORM_block4: | |
22015 | case DW_FORM_block: | |
2dc7f7b3 | 22016 | case DW_FORM_exprloc: |
0224619f | 22017 | case DW_FORM_data16: |
c906108c | 22018 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22019 | if (TYPE_LENGTH (type) != blk->size) |
22020 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22021 | TYPE_LENGTH (type)); | |
22022 | *bytes = blk->data; | |
c906108c | 22023 | break; |
2df3850c JM |
22024 | |
22025 | /* The DW_AT_const_value attributes are supposed to carry the | |
22026 | symbol's value "represented as it would be on the target | |
22027 | architecture." By the time we get here, it's already been | |
22028 | converted to host endianness, so we just need to sign- or | |
22029 | zero-extend it as appropriate. */ | |
22030 | case DW_FORM_data1: | |
3aef2284 | 22031 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22032 | break; |
c906108c | 22033 | case DW_FORM_data2: |
3aef2284 | 22034 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22035 | break; |
c906108c | 22036 | case DW_FORM_data4: |
3aef2284 | 22037 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22038 | break; |
c906108c | 22039 | case DW_FORM_data8: |
3aef2284 | 22040 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22041 | break; |
22042 | ||
c906108c | 22043 | case DW_FORM_sdata: |
663c44ac | 22044 | case DW_FORM_implicit_const: |
98bfdba5 | 22045 | *value = DW_SND (attr); |
2df3850c JM |
22046 | break; |
22047 | ||
c906108c | 22048 | case DW_FORM_udata: |
98bfdba5 | 22049 | *value = DW_UNSND (attr); |
c906108c | 22050 | break; |
2df3850c | 22051 | |
c906108c | 22052 | default: |
b98664d3 | 22053 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22054 | dwarf_form_name (attr->form)); |
98bfdba5 | 22055 | *value = 0; |
c906108c SS |
22056 | break; |
22057 | } | |
22058 | } | |
22059 | ||
2df3850c | 22060 | |
98bfdba5 PA |
22061 | /* Copy constant value from an attribute to a symbol. */ |
22062 | ||
2df3850c | 22063 | static void |
ff39bb5e | 22064 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22065 | struct dwarf2_cu *cu) |
2df3850c | 22066 | { |
518817b3 | 22067 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22068 | LONGEST value; |
d521ce57 | 22069 | const gdb_byte *bytes; |
98bfdba5 | 22070 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22071 | |
98bfdba5 PA |
22072 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
22073 | SYMBOL_PRINT_NAME (sym), | |
22074 | &objfile->objfile_obstack, cu, | |
22075 | &value, &bytes, &baton); | |
2df3850c | 22076 | |
98bfdba5 PA |
22077 | if (baton != NULL) |
22078 | { | |
98bfdba5 | 22079 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22080 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22081 | } |
22082 | else if (bytes != NULL) | |
22083 | { | |
22084 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22085 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22086 | } |
22087 | else | |
22088 | { | |
22089 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22090 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22091 | } |
2df3850c JM |
22092 | } |
22093 | ||
c906108c SS |
22094 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22095 | ||
22096 | static struct type * | |
e7c27a73 | 22097 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22098 | { |
c906108c | 22099 | struct attribute *type_attr; |
c906108c | 22100 | |
e142c38c | 22101 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22102 | if (!type_attr) |
22103 | { | |
518817b3 | 22104 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22105 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22106 | return objfile_type (objfile)->builtin_void; |
c906108c | 22107 | } |
348e048f | 22108 | |
673bfd45 | 22109 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22110 | } |
22111 | ||
b4ba55a1 JB |
22112 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22113 | that allows to find parallel types through that information instead | |
22114 | of having to do expensive parallel lookups by type name. */ | |
22115 | ||
22116 | static int | |
22117 | need_gnat_info (struct dwarf2_cu *cu) | |
22118 | { | |
de4cb04a JB |
22119 | /* Assume that the Ada compiler was GNAT, which always produces |
22120 | the auxiliary information. */ | |
22121 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22122 | } |
22123 | ||
b4ba55a1 JB |
22124 | /* Return the auxiliary type of the die in question using its |
22125 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22126 | attribute is not present. */ | |
22127 | ||
22128 | static struct type * | |
22129 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22130 | { | |
b4ba55a1 | 22131 | struct attribute *type_attr; |
b4ba55a1 JB |
22132 | |
22133 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22134 | if (!type_attr) | |
22135 | return NULL; | |
22136 | ||
673bfd45 | 22137 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22138 | } |
22139 | ||
22140 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22141 | descriptive type accordingly. */ | |
22142 | ||
22143 | static void | |
22144 | set_descriptive_type (struct type *type, struct die_info *die, | |
22145 | struct dwarf2_cu *cu) | |
22146 | { | |
22147 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22148 | ||
22149 | if (descriptive_type) | |
22150 | { | |
22151 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22152 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22153 | } | |
22154 | } | |
22155 | ||
c906108c SS |
22156 | /* Return the containing type of the die in question using its |
22157 | DW_AT_containing_type attribute. */ | |
22158 | ||
22159 | static struct type * | |
e7c27a73 | 22160 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22161 | { |
c906108c | 22162 | struct attribute *type_attr; |
518817b3 | 22163 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22164 | |
e142c38c | 22165 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22166 | if (!type_attr) |
22167 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22168 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22169 | |
673bfd45 | 22170 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22171 | } |
22172 | ||
ac9ec31b DE |
22173 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22174 | ||
22175 | static struct type * | |
22176 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22177 | { | |
518817b3 SM |
22178 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22179 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 22180 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 22181 | char *saved; |
ac9ec31b | 22182 | |
528e1572 SM |
22183 | std::string message |
22184 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22185 | objfile_name (objfile), | |
22186 | sect_offset_str (cu->header.sect_off), | |
22187 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22188 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22189 | |
19f392bc | 22190 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22191 | } |
22192 | ||
673bfd45 | 22193 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22194 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22195 | DW_AT_containing_type. | |
673bfd45 DE |
22196 | If there is no type substitute an error marker. */ |
22197 | ||
c906108c | 22198 | static struct type * |
ff39bb5e | 22199 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22200 | struct dwarf2_cu *cu) |
c906108c | 22201 | { |
518817b3 SM |
22202 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22203 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22204 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22205 | struct type *this_type; |
22206 | ||
ac9ec31b DE |
22207 | gdb_assert (attr->name == DW_AT_type |
22208 | || attr->name == DW_AT_GNAT_descriptive_type | |
22209 | || attr->name == DW_AT_containing_type); | |
22210 | ||
673bfd45 DE |
22211 | /* First see if we have it cached. */ |
22212 | ||
36586728 TT |
22213 | if (attr->form == DW_FORM_GNU_ref_alt) |
22214 | { | |
22215 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22216 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22217 | |
ed2dc618 SM |
22218 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22219 | dwarf2_per_objfile); | |
9c541725 | 22220 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22221 | } |
7771576e | 22222 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22223 | { |
9c541725 | 22224 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22225 | |
9c541725 | 22226 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22227 | } |
55f1336d | 22228 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22229 | { |
ac9ec31b | 22230 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22231 | |
ac9ec31b | 22232 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22233 | } |
22234 | else | |
22235 | { | |
b98664d3 | 22236 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22237 | " at %s [in module %s]"), |
22238 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22239 | objfile_name (objfile)); |
ac9ec31b | 22240 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22241 | } |
22242 | ||
22243 | /* If not cached we need to read it in. */ | |
22244 | ||
22245 | if (this_type == NULL) | |
22246 | { | |
ac9ec31b | 22247 | struct die_info *type_die = NULL; |
673bfd45 DE |
22248 | struct dwarf2_cu *type_cu = cu; |
22249 | ||
7771576e | 22250 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22251 | type_die = follow_die_ref (die, attr, &type_cu); |
22252 | if (type_die == NULL) | |
22253 | return build_error_marker_type (cu, die); | |
22254 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22255 | from an inter-CU reference and the type's CU got expanded before |
22256 | ours. */ | |
ac9ec31b | 22257 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22258 | } |
22259 | ||
22260 | /* If we still don't have a type use an error marker. */ | |
22261 | ||
22262 | if (this_type == NULL) | |
ac9ec31b | 22263 | return build_error_marker_type (cu, die); |
673bfd45 | 22264 | |
f792889a | 22265 | return this_type; |
c906108c SS |
22266 | } |
22267 | ||
673bfd45 DE |
22268 | /* Return the type in DIE, CU. |
22269 | Returns NULL for invalid types. | |
22270 | ||
02142a6c | 22271 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22272 | and only reads the die in if necessary. |
22273 | ||
22274 | NOTE: This can be called when reading in partial or full symbols. */ | |
22275 | ||
f792889a | 22276 | static struct type * |
e7c27a73 | 22277 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22278 | { |
f792889a DJ |
22279 | struct type *this_type; |
22280 | ||
22281 | this_type = get_die_type (die, cu); | |
22282 | if (this_type) | |
22283 | return this_type; | |
22284 | ||
673bfd45 DE |
22285 | return read_type_die_1 (die, cu); |
22286 | } | |
22287 | ||
22288 | /* Read the type in DIE, CU. | |
22289 | Returns NULL for invalid types. */ | |
22290 | ||
22291 | static struct type * | |
22292 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22293 | { | |
22294 | struct type *this_type = NULL; | |
22295 | ||
c906108c SS |
22296 | switch (die->tag) |
22297 | { | |
22298 | case DW_TAG_class_type: | |
680b30c7 | 22299 | case DW_TAG_interface_type: |
c906108c SS |
22300 | case DW_TAG_structure_type: |
22301 | case DW_TAG_union_type: | |
f792889a | 22302 | this_type = read_structure_type (die, cu); |
c906108c SS |
22303 | break; |
22304 | case DW_TAG_enumeration_type: | |
f792889a | 22305 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22306 | break; |
22307 | case DW_TAG_subprogram: | |
22308 | case DW_TAG_subroutine_type: | |
edb3359d | 22309 | case DW_TAG_inlined_subroutine: |
f792889a | 22310 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22311 | break; |
22312 | case DW_TAG_array_type: | |
f792889a | 22313 | this_type = read_array_type (die, cu); |
c906108c | 22314 | break; |
72019c9c | 22315 | case DW_TAG_set_type: |
f792889a | 22316 | this_type = read_set_type (die, cu); |
72019c9c | 22317 | break; |
c906108c | 22318 | case DW_TAG_pointer_type: |
f792889a | 22319 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22320 | break; |
22321 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22322 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22323 | break; |
22324 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22325 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22326 | break; | |
22327 | case DW_TAG_rvalue_reference_type: | |
22328 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22329 | break; |
22330 | case DW_TAG_const_type: | |
f792889a | 22331 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22332 | break; |
22333 | case DW_TAG_volatile_type: | |
f792889a | 22334 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22335 | break; |
06d66ee9 TT |
22336 | case DW_TAG_restrict_type: |
22337 | this_type = read_tag_restrict_type (die, cu); | |
22338 | break; | |
c906108c | 22339 | case DW_TAG_string_type: |
f792889a | 22340 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22341 | break; |
22342 | case DW_TAG_typedef: | |
f792889a | 22343 | this_type = read_typedef (die, cu); |
c906108c | 22344 | break; |
a02abb62 | 22345 | case DW_TAG_subrange_type: |
f792889a | 22346 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22347 | break; |
c906108c | 22348 | case DW_TAG_base_type: |
f792889a | 22349 | this_type = read_base_type (die, cu); |
c906108c | 22350 | break; |
81a17f79 | 22351 | case DW_TAG_unspecified_type: |
f792889a | 22352 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22353 | break; |
0114d602 DJ |
22354 | case DW_TAG_namespace: |
22355 | this_type = read_namespace_type (die, cu); | |
22356 | break; | |
f55ee35c JK |
22357 | case DW_TAG_module: |
22358 | this_type = read_module_type (die, cu); | |
22359 | break; | |
a2c2acaf MW |
22360 | case DW_TAG_atomic_type: |
22361 | this_type = read_tag_atomic_type (die, cu); | |
22362 | break; | |
c906108c | 22363 | default: |
b98664d3 | 22364 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22365 | dwarf_tag_name (die->tag)); |
c906108c SS |
22366 | break; |
22367 | } | |
63d06c5c | 22368 | |
f792889a | 22369 | return this_type; |
63d06c5c DC |
22370 | } |
22371 | ||
abc72ce4 DE |
22372 | /* See if we can figure out if the class lives in a namespace. We do |
22373 | this by looking for a member function; its demangled name will | |
22374 | contain namespace info, if there is any. | |
22375 | Return the computed name or NULL. | |
22376 | Space for the result is allocated on the objfile's obstack. | |
22377 | This is the full-die version of guess_partial_die_structure_name. | |
22378 | In this case we know DIE has no useful parent. */ | |
22379 | ||
22380 | static char * | |
22381 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22382 | { | |
22383 | struct die_info *spec_die; | |
22384 | struct dwarf2_cu *spec_cu; | |
22385 | struct die_info *child; | |
518817b3 | 22386 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22387 | |
22388 | spec_cu = cu; | |
22389 | spec_die = die_specification (die, &spec_cu); | |
22390 | if (spec_die != NULL) | |
22391 | { | |
22392 | die = spec_die; | |
22393 | cu = spec_cu; | |
22394 | } | |
22395 | ||
22396 | for (child = die->child; | |
22397 | child != NULL; | |
22398 | child = child->sibling) | |
22399 | { | |
22400 | if (child->tag == DW_TAG_subprogram) | |
22401 | { | |
73b9be8b | 22402 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22403 | |
7d45c7c3 | 22404 | if (linkage_name != NULL) |
abc72ce4 DE |
22405 | { |
22406 | char *actual_name | |
22407 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22408 | linkage_name); |
abc72ce4 DE |
22409 | char *name = NULL; |
22410 | ||
22411 | if (actual_name != NULL) | |
22412 | { | |
15d034d0 | 22413 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22414 | |
22415 | if (die_name != NULL | |
22416 | && strcmp (die_name, actual_name) != 0) | |
22417 | { | |
22418 | /* Strip off the class name from the full name. | |
22419 | We want the prefix. */ | |
22420 | int die_name_len = strlen (die_name); | |
22421 | int actual_name_len = strlen (actual_name); | |
22422 | ||
22423 | /* Test for '::' as a sanity check. */ | |
22424 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22425 | && actual_name[actual_name_len |
22426 | - die_name_len - 1] == ':') | |
0cf9feb9 | 22427 | name = obstack_strndup ( |
e3b94546 | 22428 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22429 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22430 | } |
22431 | } | |
22432 | xfree (actual_name); | |
22433 | return name; | |
22434 | } | |
22435 | } | |
22436 | } | |
22437 | ||
22438 | return NULL; | |
22439 | } | |
22440 | ||
96408a79 SA |
22441 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22442 | prefix part in such case. See | |
22443 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22444 | ||
a121b7c1 | 22445 | static const char * |
96408a79 SA |
22446 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22447 | { | |
22448 | struct attribute *attr; | |
e6a959d6 | 22449 | const char *base; |
96408a79 SA |
22450 | |
22451 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22452 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22453 | return NULL; | |
22454 | ||
7d45c7c3 | 22455 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22456 | return NULL; |
22457 | ||
73b9be8b | 22458 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22459 | if (attr == NULL || DW_STRING (attr) == NULL) |
22460 | return NULL; | |
22461 | ||
22462 | /* dwarf2_name had to be already called. */ | |
22463 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22464 | ||
22465 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22466 | base = strrchr (DW_STRING (attr), ':'); | |
22467 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22468 | return ""; | |
22469 | ||
518817b3 | 22470 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
22471 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22472 | DW_STRING (attr), | |
22473 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22474 | } |
22475 | ||
fdde2d81 | 22476 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22477 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22478 | |
0114d602 DJ |
22479 | For example, if we're within the method foo() in the following |
22480 | code: | |
22481 | ||
22482 | namespace N { | |
22483 | class C { | |
22484 | void foo () { | |
22485 | } | |
22486 | }; | |
22487 | } | |
22488 | ||
22489 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22490 | |
0d5cff50 | 22491 | static const char * |
e142c38c | 22492 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22493 | { |
518817b3 SM |
22494 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22495 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22496 | struct die_info *parent, *spec_die; |
22497 | struct dwarf2_cu *spec_cu; | |
22498 | struct type *parent_type; | |
a121b7c1 | 22499 | const char *retval; |
63d06c5c | 22500 | |
9c37b5ae | 22501 | if (cu->language != language_cplus |
c44af4eb TT |
22502 | && cu->language != language_fortran && cu->language != language_d |
22503 | && cu->language != language_rust) | |
0114d602 DJ |
22504 | return ""; |
22505 | ||
96408a79 SA |
22506 | retval = anonymous_struct_prefix (die, cu); |
22507 | if (retval) | |
22508 | return retval; | |
22509 | ||
0114d602 DJ |
22510 | /* We have to be careful in the presence of DW_AT_specification. |
22511 | For example, with GCC 3.4, given the code | |
22512 | ||
22513 | namespace N { | |
22514 | void foo() { | |
22515 | // Definition of N::foo. | |
22516 | } | |
22517 | } | |
22518 | ||
22519 | then we'll have a tree of DIEs like this: | |
22520 | ||
22521 | 1: DW_TAG_compile_unit | |
22522 | 2: DW_TAG_namespace // N | |
22523 | 3: DW_TAG_subprogram // declaration of N::foo | |
22524 | 4: DW_TAG_subprogram // definition of N::foo | |
22525 | DW_AT_specification // refers to die #3 | |
22526 | ||
22527 | Thus, when processing die #4, we have to pretend that we're in | |
22528 | the context of its DW_AT_specification, namely the contex of die | |
22529 | #3. */ | |
22530 | spec_cu = cu; | |
22531 | spec_die = die_specification (die, &spec_cu); | |
22532 | if (spec_die == NULL) | |
22533 | parent = die->parent; | |
22534 | else | |
63d06c5c | 22535 | { |
0114d602 DJ |
22536 | parent = spec_die->parent; |
22537 | cu = spec_cu; | |
63d06c5c | 22538 | } |
0114d602 DJ |
22539 | |
22540 | if (parent == NULL) | |
22541 | return ""; | |
98bfdba5 PA |
22542 | else if (parent->building_fullname) |
22543 | { | |
22544 | const char *name; | |
22545 | const char *parent_name; | |
22546 | ||
22547 | /* It has been seen on RealView 2.2 built binaries, | |
22548 | DW_TAG_template_type_param types actually _defined_ as | |
22549 | children of the parent class: | |
22550 | ||
22551 | enum E {}; | |
22552 | template class <class Enum> Class{}; | |
22553 | Class<enum E> class_e; | |
22554 | ||
22555 | 1: DW_TAG_class_type (Class) | |
22556 | 2: DW_TAG_enumeration_type (E) | |
22557 | 3: DW_TAG_enumerator (enum1:0) | |
22558 | 3: DW_TAG_enumerator (enum2:1) | |
22559 | ... | |
22560 | 2: DW_TAG_template_type_param | |
22561 | DW_AT_type DW_FORM_ref_udata (E) | |
22562 | ||
22563 | Besides being broken debug info, it can put GDB into an | |
22564 | infinite loop. Consider: | |
22565 | ||
22566 | When we're building the full name for Class<E>, we'll start | |
22567 | at Class, and go look over its template type parameters, | |
22568 | finding E. We'll then try to build the full name of E, and | |
22569 | reach here. We're now trying to build the full name of E, | |
22570 | and look over the parent DIE for containing scope. In the | |
22571 | broken case, if we followed the parent DIE of E, we'd again | |
22572 | find Class, and once again go look at its template type | |
22573 | arguments, etc., etc. Simply don't consider such parent die | |
22574 | as source-level parent of this die (it can't be, the language | |
22575 | doesn't allow it), and break the loop here. */ | |
22576 | name = dwarf2_name (die, cu); | |
22577 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22578 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22579 | name ? name : "<unknown>", |
22580 | parent_name ? parent_name : "<unknown>"); | |
22581 | return ""; | |
22582 | } | |
63d06c5c | 22583 | else |
0114d602 DJ |
22584 | switch (parent->tag) |
22585 | { | |
63d06c5c | 22586 | case DW_TAG_namespace: |
0114d602 | 22587 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22588 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22589 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22590 | Work around this problem here. */ | |
22591 | if (cu->language == language_cplus | |
e86ca25f | 22592 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22593 | return ""; |
0114d602 | 22594 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22595 | return TYPE_NAME (parent_type); |
63d06c5c | 22596 | case DW_TAG_class_type: |
680b30c7 | 22597 | case DW_TAG_interface_type: |
63d06c5c | 22598 | case DW_TAG_structure_type: |
0114d602 | 22599 | case DW_TAG_union_type: |
f55ee35c | 22600 | case DW_TAG_module: |
0114d602 | 22601 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22602 | if (TYPE_NAME (parent_type) != NULL) |
22603 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22604 | else |
22605 | /* An anonymous structure is only allowed non-static data | |
22606 | members; no typedefs, no member functions, et cetera. | |
22607 | So it does not need a prefix. */ | |
22608 | return ""; | |
abc72ce4 | 22609 | case DW_TAG_compile_unit: |
95554aad | 22610 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22611 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22612 | if (cu->language == language_cplus | |
fd5866f6 | 22613 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
22614 | && die->child != NULL |
22615 | && (die->tag == DW_TAG_class_type | |
22616 | || die->tag == DW_TAG_structure_type | |
22617 | || die->tag == DW_TAG_union_type)) | |
22618 | { | |
22619 | char *name = guess_full_die_structure_name (die, cu); | |
22620 | if (name != NULL) | |
22621 | return name; | |
22622 | } | |
22623 | return ""; | |
3d567982 TT |
22624 | case DW_TAG_enumeration_type: |
22625 | parent_type = read_type_die (parent, cu); | |
22626 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22627 | { | |
e86ca25f TT |
22628 | if (TYPE_NAME (parent_type) != NULL) |
22629 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22630 | return ""; |
22631 | } | |
22632 | /* Fall through. */ | |
63d06c5c | 22633 | default: |
8176b9b8 | 22634 | return determine_prefix (parent, cu); |
63d06c5c | 22635 | } |
63d06c5c DC |
22636 | } |
22637 | ||
3e43a32a MS |
22638 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22639 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22640 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22641 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22642 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22643 | |
f55ee35c | 22644 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22645 | |
22646 | static char * | |
f55ee35c JK |
22647 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22648 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22649 | { |
f55ee35c | 22650 | const char *lead = ""; |
5c315b68 | 22651 | const char *sep; |
63d06c5c | 22652 | |
3e43a32a MS |
22653 | if (suffix == NULL || suffix[0] == '\0' |
22654 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22655 | sep = ""; |
45280282 IB |
22656 | else if (cu->language == language_d) |
22657 | { | |
22658 | /* For D, the 'main' function could be defined in any module, but it | |
22659 | should never be prefixed. */ | |
22660 | if (strcmp (suffix, "D main") == 0) | |
22661 | { | |
22662 | prefix = ""; | |
22663 | sep = ""; | |
22664 | } | |
22665 | else | |
22666 | sep = "."; | |
22667 | } | |
f55ee35c JK |
22668 | else if (cu->language == language_fortran && physname) |
22669 | { | |
22670 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22671 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22672 | ||
22673 | lead = "__"; | |
22674 | sep = "_MOD_"; | |
22675 | } | |
987504bb JJ |
22676 | else |
22677 | sep = "::"; | |
63d06c5c | 22678 | |
6dd47d34 DE |
22679 | if (prefix == NULL) |
22680 | prefix = ""; | |
22681 | if (suffix == NULL) | |
22682 | suffix = ""; | |
22683 | ||
987504bb JJ |
22684 | if (obs == NULL) |
22685 | { | |
3e43a32a | 22686 | char *retval |
224c3ddb SM |
22687 | = ((char *) |
22688 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22689 | |
f55ee35c JK |
22690 | strcpy (retval, lead); |
22691 | strcat (retval, prefix); | |
6dd47d34 DE |
22692 | strcat (retval, sep); |
22693 | strcat (retval, suffix); | |
63d06c5c DC |
22694 | return retval; |
22695 | } | |
987504bb JJ |
22696 | else |
22697 | { | |
22698 | /* We have an obstack. */ | |
f55ee35c | 22699 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22700 | } |
63d06c5c DC |
22701 | } |
22702 | ||
c906108c SS |
22703 | /* Return sibling of die, NULL if no sibling. */ |
22704 | ||
f9aca02d | 22705 | static struct die_info * |
fba45db2 | 22706 | sibling_die (struct die_info *die) |
c906108c | 22707 | { |
639d11d3 | 22708 | return die->sibling; |
c906108c SS |
22709 | } |
22710 | ||
71c25dea TT |
22711 | /* Get name of a die, return NULL if not found. */ |
22712 | ||
15d034d0 TT |
22713 | static const char * |
22714 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22715 | struct obstack *obstack) |
22716 | { | |
22717 | if (name && cu->language == language_cplus) | |
22718 | { | |
2f408ecb | 22719 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22720 | |
2f408ecb | 22721 | if (!canon_name.empty ()) |
71c25dea | 22722 | { |
2f408ecb | 22723 | if (canon_name != name) |
efba19b0 | 22724 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
22725 | } |
22726 | } | |
22727 | ||
22728 | return name; | |
c906108c SS |
22729 | } |
22730 | ||
96553a0c DE |
22731 | /* Get name of a die, return NULL if not found. |
22732 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22733 | |
15d034d0 | 22734 | static const char * |
e142c38c | 22735 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22736 | { |
22737 | struct attribute *attr; | |
518817b3 | 22738 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22739 | |
e142c38c | 22740 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22741 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22742 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22743 | && die->tag != DW_TAG_class_type |
22744 | && die->tag != DW_TAG_interface_type | |
22745 | && die->tag != DW_TAG_structure_type | |
22746 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22747 | return NULL; |
22748 | ||
22749 | switch (die->tag) | |
22750 | { | |
22751 | case DW_TAG_compile_unit: | |
95554aad | 22752 | case DW_TAG_partial_unit: |
71c25dea TT |
22753 | /* Compilation units have a DW_AT_name that is a filename, not |
22754 | a source language identifier. */ | |
22755 | case DW_TAG_enumeration_type: | |
22756 | case DW_TAG_enumerator: | |
22757 | /* These tags always have simple identifiers already; no need | |
22758 | to canonicalize them. */ | |
22759 | return DW_STRING (attr); | |
907af001 | 22760 | |
96553a0c DE |
22761 | case DW_TAG_namespace: |
22762 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22763 | return DW_STRING (attr); | |
22764 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22765 | ||
907af001 UW |
22766 | case DW_TAG_class_type: |
22767 | case DW_TAG_interface_type: | |
22768 | case DW_TAG_structure_type: | |
22769 | case DW_TAG_union_type: | |
22770 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22771 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22772 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22773 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22774 | if (attr && DW_STRING (attr) |
61012eef GB |
22775 | && (startswith (DW_STRING (attr), "._") |
22776 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22777 | return NULL; |
53832f31 TT |
22778 | |
22779 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22780 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22781 | if (!attr || DW_STRING (attr) == NULL) | |
22782 | { | |
df5c6c50 | 22783 | char *demangled = NULL; |
53832f31 | 22784 | |
73b9be8b | 22785 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22786 | if (attr == NULL || DW_STRING (attr) == NULL) |
22787 | return NULL; | |
22788 | ||
df5c6c50 JK |
22789 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22790 | call for the same DIE. */ | |
22791 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22792 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22793 | |
22794 | if (demangled) | |
22795 | { | |
e6a959d6 | 22796 | const char *base; |
96408a79 | 22797 | |
53832f31 | 22798 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22799 | DW_STRING (attr) |
021887d8 TT |
22800 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
22801 | demangled); | |
53832f31 TT |
22802 | DW_STRING_IS_CANONICAL (attr) = 1; |
22803 | xfree (demangled); | |
96408a79 SA |
22804 | |
22805 | /* Strip any leading namespaces/classes, keep only the base name. | |
22806 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22807 | base = strrchr (DW_STRING (attr), ':'); | |
22808 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22809 | return &base[1]; | |
22810 | else | |
22811 | return DW_STRING (attr); | |
53832f31 TT |
22812 | } |
22813 | } | |
907af001 UW |
22814 | break; |
22815 | ||
71c25dea | 22816 | default: |
907af001 UW |
22817 | break; |
22818 | } | |
22819 | ||
22820 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22821 | { | |
22822 | DW_STRING (attr) | |
22823 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22824 | &objfile->per_bfd->storage_obstack); |
907af001 | 22825 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22826 | } |
907af001 | 22827 | return DW_STRING (attr); |
9219021c DC |
22828 | } |
22829 | ||
22830 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22831 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22832 | containing the return value on output. */ | |
9219021c DC |
22833 | |
22834 | static struct die_info * | |
f2f0e013 | 22835 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22836 | { |
22837 | struct attribute *attr; | |
9219021c | 22838 | |
f2f0e013 | 22839 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22840 | if (attr == NULL) |
22841 | return NULL; | |
22842 | ||
f2f0e013 | 22843 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22844 | } |
22845 | ||
fa9c3fa0 TT |
22846 | /* A convenience function that returns an "unknown" DWARF name, |
22847 | including the value of V. STR is the name of the entity being | |
22848 | printed, e.g., "TAG". */ | |
22849 | ||
22850 | static const char * | |
22851 | dwarf_unknown (const char *str, unsigned v) | |
22852 | { | |
22853 | char *cell = get_print_cell (); | |
22854 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
22855 | return cell; | |
22856 | } | |
22857 | ||
c906108c SS |
22858 | /* Convert a DIE tag into its string name. */ |
22859 | ||
f39c6ffd | 22860 | static const char * |
aa1ee363 | 22861 | dwarf_tag_name (unsigned tag) |
c906108c | 22862 | { |
f39c6ffd TT |
22863 | const char *name = get_DW_TAG_name (tag); |
22864 | ||
22865 | if (name == NULL) | |
fa9c3fa0 | 22866 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
22867 | |
22868 | return name; | |
c906108c SS |
22869 | } |
22870 | ||
22871 | /* Convert a DWARF attribute code into its string name. */ | |
22872 | ||
f39c6ffd | 22873 | static const char * |
aa1ee363 | 22874 | dwarf_attr_name (unsigned attr) |
c906108c | 22875 | { |
f39c6ffd TT |
22876 | const char *name; |
22877 | ||
c764a876 | 22878 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22879 | if (attr == DW_AT_MIPS_fde) |
22880 | return "DW_AT_MIPS_fde"; | |
22881 | #else | |
22882 | if (attr == DW_AT_HP_block_index) | |
22883 | return "DW_AT_HP_block_index"; | |
c764a876 | 22884 | #endif |
f39c6ffd TT |
22885 | |
22886 | name = get_DW_AT_name (attr); | |
22887 | ||
22888 | if (name == NULL) | |
fa9c3fa0 | 22889 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
22890 | |
22891 | return name; | |
c906108c SS |
22892 | } |
22893 | ||
a084a2a6 AT |
22894 | /* Convert a unit type to corresponding DW_UT name. */ |
22895 | ||
22896 | static const char * | |
22897 | dwarf_unit_type_name (int unit_type) { | |
22898 | switch (unit_type) | |
22899 | { | |
22900 | case 0x01: | |
22901 | return "DW_UT_compile (0x01)"; | |
22902 | case 0x02: | |
22903 | return "DW_UT_type (0x02)"; | |
22904 | case 0x03: | |
22905 | return "DW_UT_partial (0x03)"; | |
22906 | case 0x04: | |
22907 | return "DW_UT_skeleton (0x04)"; | |
22908 | case 0x05: | |
22909 | return "DW_UT_split_compile (0x05)"; | |
22910 | case 0x06: | |
22911 | return "DW_UT_split_type (0x06)"; | |
22912 | case 0x80: | |
22913 | return "DW_UT_lo_user (0x80)"; | |
22914 | case 0xff: | |
22915 | return "DW_UT_hi_user (0xff)"; | |
22916 | default: | |
22917 | return nullptr; | |
22918 | } | |
22919 | } | |
22920 | ||
c906108c SS |
22921 | /* Convert a DWARF value form code into its string name. */ |
22922 | ||
f39c6ffd | 22923 | static const char * |
aa1ee363 | 22924 | dwarf_form_name (unsigned form) |
c906108c | 22925 | { |
f39c6ffd TT |
22926 | const char *name = get_DW_FORM_name (form); |
22927 | ||
22928 | if (name == NULL) | |
fa9c3fa0 | 22929 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
22930 | |
22931 | return name; | |
c906108c SS |
22932 | } |
22933 | ||
a121b7c1 | 22934 | static const char * |
fba45db2 | 22935 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22936 | { |
22937 | if (mybool) | |
22938 | return "TRUE"; | |
22939 | else | |
22940 | return "FALSE"; | |
22941 | } | |
22942 | ||
22943 | /* Convert a DWARF type code into its string name. */ | |
22944 | ||
f39c6ffd | 22945 | static const char * |
aa1ee363 | 22946 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22947 | { |
f39c6ffd | 22948 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22949 | |
f39c6ffd | 22950 | if (name == NULL) |
fa9c3fa0 | 22951 | return dwarf_unknown ("ATE", enc); |
c906108c | 22952 | |
f39c6ffd | 22953 | return name; |
c906108c | 22954 | } |
c906108c | 22955 | |
f9aca02d | 22956 | static void |
d97bc12b | 22957 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22958 | { |
22959 | unsigned int i; | |
22960 | ||
d97bc12b | 22961 | print_spaces (indent, f); |
9d8780f0 | 22962 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22963 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22964 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22965 | |
22966 | if (die->parent != NULL) | |
22967 | { | |
22968 | print_spaces (indent, f); | |
9d8780f0 SM |
22969 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22970 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22971 | } |
22972 | ||
22973 | print_spaces (indent, f); | |
22974 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22975 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22976 | |
d97bc12b DE |
22977 | print_spaces (indent, f); |
22978 | fprintf_unfiltered (f, " attributes:\n"); | |
22979 | ||
c906108c SS |
22980 | for (i = 0; i < die->num_attrs; ++i) |
22981 | { | |
d97bc12b DE |
22982 | print_spaces (indent, f); |
22983 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22984 | dwarf_attr_name (die->attrs[i].name), |
22985 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22986 | |
c906108c SS |
22987 | switch (die->attrs[i].form) |
22988 | { | |
c906108c | 22989 | case DW_FORM_addr: |
336d760d | 22990 | case DW_FORM_addrx: |
3019eac3 | 22991 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22992 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22993 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22994 | break; |
22995 | case DW_FORM_block2: | |
22996 | case DW_FORM_block4: | |
22997 | case DW_FORM_block: | |
22998 | case DW_FORM_block1: | |
56eb65bd SP |
22999 | fprintf_unfiltered (f, "block: size %s", |
23000 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 23001 | break; |
2dc7f7b3 | 23002 | case DW_FORM_exprloc: |
56eb65bd SP |
23003 | fprintf_unfiltered (f, "expression: size %s", |
23004 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 23005 | break; |
0224619f JK |
23006 | case DW_FORM_data16: |
23007 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23008 | break; | |
4568ecf9 DE |
23009 | case DW_FORM_ref_addr: |
23010 | fprintf_unfiltered (f, "ref address: "); | |
23011 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23012 | break; | |
36586728 TT |
23013 | case DW_FORM_GNU_ref_alt: |
23014 | fprintf_unfiltered (f, "alt ref address: "); | |
23015 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23016 | break; | |
10b3939b DJ |
23017 | case DW_FORM_ref1: |
23018 | case DW_FORM_ref2: | |
23019 | case DW_FORM_ref4: | |
4568ecf9 DE |
23020 | case DW_FORM_ref8: |
23021 | case DW_FORM_ref_udata: | |
d97bc12b | 23022 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 23023 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 23024 | break; |
c906108c SS |
23025 | case DW_FORM_data1: |
23026 | case DW_FORM_data2: | |
23027 | case DW_FORM_data4: | |
ce5d95e1 | 23028 | case DW_FORM_data8: |
c906108c SS |
23029 | case DW_FORM_udata: |
23030 | case DW_FORM_sdata: | |
43bbcdc2 PH |
23031 | fprintf_unfiltered (f, "constant: %s", |
23032 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 23033 | break; |
2dc7f7b3 TT |
23034 | case DW_FORM_sec_offset: |
23035 | fprintf_unfiltered (f, "section offset: %s", | |
23036 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23037 | break; | |
55f1336d | 23038 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23039 | fprintf_unfiltered (f, "signature: %s", |
23040 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23041 | break; |
c906108c | 23042 | case DW_FORM_string: |
4bdf3d34 | 23043 | case DW_FORM_strp: |
43988095 | 23044 | case DW_FORM_line_strp: |
cf532bd1 | 23045 | case DW_FORM_strx: |
3019eac3 | 23046 | case DW_FORM_GNU_str_index: |
36586728 | 23047 | case DW_FORM_GNU_strp_alt: |
8285870a | 23048 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23049 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23050 | ? DW_STRING (&die->attrs[i]) : "", |
23051 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23052 | break; |
23053 | case DW_FORM_flag: | |
23054 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23055 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23056 | else |
d97bc12b | 23057 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23058 | break; |
2dc7f7b3 TT |
23059 | case DW_FORM_flag_present: |
23060 | fprintf_unfiltered (f, "flag: TRUE"); | |
23061 | break; | |
a8329558 | 23062 | case DW_FORM_indirect: |
0963b4bd MS |
23063 | /* The reader will have reduced the indirect form to |
23064 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
23065 | fprintf_unfiltered (f, |
23066 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 23067 | break; |
663c44ac JK |
23068 | case DW_FORM_implicit_const: |
23069 | fprintf_unfiltered (f, "constant: %s", | |
23070 | plongest (DW_SND (&die->attrs[i]))); | |
23071 | break; | |
c906108c | 23072 | default: |
d97bc12b | 23073 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23074 | die->attrs[i].form); |
d97bc12b | 23075 | break; |
c906108c | 23076 | } |
d97bc12b | 23077 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23078 | } |
23079 | } | |
23080 | ||
f9aca02d | 23081 | static void |
d97bc12b | 23082 | dump_die_for_error (struct die_info *die) |
c906108c | 23083 | { |
d97bc12b DE |
23084 | dump_die_shallow (gdb_stderr, 0, die); |
23085 | } | |
23086 | ||
23087 | static void | |
23088 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23089 | { | |
23090 | int indent = level * 4; | |
23091 | ||
23092 | gdb_assert (die != NULL); | |
23093 | ||
23094 | if (level >= max_level) | |
23095 | return; | |
23096 | ||
23097 | dump_die_shallow (f, indent, die); | |
23098 | ||
23099 | if (die->child != NULL) | |
c906108c | 23100 | { |
d97bc12b DE |
23101 | print_spaces (indent, f); |
23102 | fprintf_unfiltered (f, " Children:"); | |
23103 | if (level + 1 < max_level) | |
23104 | { | |
23105 | fprintf_unfiltered (f, "\n"); | |
23106 | dump_die_1 (f, level + 1, max_level, die->child); | |
23107 | } | |
23108 | else | |
23109 | { | |
3e43a32a MS |
23110 | fprintf_unfiltered (f, |
23111 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23112 | } |
23113 | } | |
23114 | ||
23115 | if (die->sibling != NULL && level > 0) | |
23116 | { | |
23117 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23118 | } |
23119 | } | |
23120 | ||
d97bc12b DE |
23121 | /* This is called from the pdie macro in gdbinit.in. |
23122 | It's not static so gcc will keep a copy callable from gdb. */ | |
23123 | ||
23124 | void | |
23125 | dump_die (struct die_info *die, int max_level) | |
23126 | { | |
23127 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23128 | } | |
23129 | ||
f9aca02d | 23130 | static void |
51545339 | 23131 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23132 | { |
51545339 | 23133 | void **slot; |
c906108c | 23134 | |
9c541725 PA |
23135 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23136 | to_underlying (die->sect_off), | |
b64f50a1 | 23137 | INSERT); |
51545339 DJ |
23138 | |
23139 | *slot = die; | |
c906108c SS |
23140 | } |
23141 | ||
b64f50a1 JK |
23142 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23143 | required kind. */ | |
23144 | ||
23145 | static sect_offset | |
ff39bb5e | 23146 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23147 | { |
7771576e | 23148 | if (attr_form_is_ref (attr)) |
9c541725 | 23149 | return (sect_offset) DW_UNSND (attr); |
93311388 | 23150 | |
b98664d3 | 23151 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 23152 | dwarf_form_name (attr->form)); |
9c541725 | 23153 | return {}; |
c906108c SS |
23154 | } |
23155 | ||
43bbcdc2 PH |
23156 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23157 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23158 | |
43bbcdc2 | 23159 | static LONGEST |
ff39bb5e | 23160 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23161 | { |
663c44ac | 23162 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23163 | return DW_SND (attr); |
23164 | else if (attr->form == DW_FORM_udata | |
23165 | || attr->form == DW_FORM_data1 | |
23166 | || attr->form == DW_FORM_data2 | |
23167 | || attr->form == DW_FORM_data4 | |
23168 | || attr->form == DW_FORM_data8) | |
23169 | return DW_UNSND (attr); | |
23170 | else | |
23171 | { | |
0224619f | 23172 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 23173 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
23174 | dwarf_form_name (attr->form)); |
23175 | return default_value; | |
23176 | } | |
23177 | } | |
23178 | ||
348e048f DE |
23179 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23180 | On entry *REF_CU is the CU of SRC_DIE. | |
23181 | On exit *REF_CU is the CU of the result. */ | |
23182 | ||
23183 | static struct die_info * | |
ff39bb5e | 23184 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23185 | struct dwarf2_cu **ref_cu) |
23186 | { | |
23187 | struct die_info *die; | |
23188 | ||
7771576e | 23189 | if (attr_form_is_ref (attr)) |
348e048f | 23190 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23191 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23192 | die = follow_die_sig (src_die, attr, ref_cu); |
23193 | else | |
23194 | { | |
23195 | dump_die_for_error (src_die); | |
23196 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23197 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23198 | } |
23199 | ||
23200 | return die; | |
03dd20cc DJ |
23201 | } |
23202 | ||
5c631832 | 23203 | /* Follow reference OFFSET. |
673bfd45 DE |
23204 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23205 | On exit *REF_CU is the CU of the result. | |
23206 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23207 | |
f9aca02d | 23208 | static struct die_info * |
9c541725 | 23209 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23210 | struct dwarf2_cu **ref_cu) |
c906108c | 23211 | { |
10b3939b | 23212 | struct die_info temp_die; |
f2f0e013 | 23213 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23214 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23215 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 23216 | |
348e048f DE |
23217 | gdb_assert (cu->per_cu != NULL); |
23218 | ||
98bfdba5 PA |
23219 | target_cu = cu; |
23220 | ||
3019eac3 | 23221 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23222 | { |
23223 | /* .debug_types CUs cannot reference anything outside their CU. | |
23224 | If they need to, they have to reference a signatured type via | |
55f1336d | 23225 | DW_FORM_ref_sig8. */ |
9c541725 | 23226 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23227 | return NULL; |
348e048f | 23228 | } |
36586728 | 23229 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23230 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23231 | { |
23232 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23233 | |
9c541725 | 23234 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23235 | dwarf2_per_objfile); |
03dd20cc DJ |
23236 | |
23237 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 23238 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 23239 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 23240 | |
10b3939b DJ |
23241 | target_cu = per_cu->cu; |
23242 | } | |
98bfdba5 PA |
23243 | else if (cu->dies == NULL) |
23244 | { | |
23245 | /* We're loading full DIEs during partial symbol reading. */ | |
23246 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23247 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23248 | } |
c906108c | 23249 | |
f2f0e013 | 23250 | *ref_cu = target_cu; |
9c541725 | 23251 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23252 | |
23253 | if (target_cu != cu) | |
23254 | target_cu->ancestor = cu; | |
23255 | ||
9a3c8263 | 23256 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23257 | &temp_die, |
23258 | to_underlying (sect_off)); | |
5c631832 | 23259 | } |
10b3939b | 23260 | |
5c631832 JK |
23261 | /* Follow reference attribute ATTR of SRC_DIE. |
23262 | On entry *REF_CU is the CU of SRC_DIE. | |
23263 | On exit *REF_CU is the CU of the result. */ | |
23264 | ||
23265 | static struct die_info * | |
ff39bb5e | 23266 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23267 | struct dwarf2_cu **ref_cu) |
23268 | { | |
9c541725 | 23269 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23270 | struct dwarf2_cu *cu = *ref_cu; |
23271 | struct die_info *die; | |
23272 | ||
9c541725 | 23273 | die = follow_die_offset (sect_off, |
36586728 TT |
23274 | (attr->form == DW_FORM_GNU_ref_alt |
23275 | || cu->per_cu->is_dwz), | |
23276 | ref_cu); | |
5c631832 | 23277 | if (!die) |
9d8780f0 SM |
23278 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23279 | "at %s [in module %s]"), | |
23280 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23281 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23282 | |
5c631832 JK |
23283 | return die; |
23284 | } | |
23285 | ||
9c541725 | 23286 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23287 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23288 | dwarf2_locexpr_baton->data has lifetime of |
23289 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23290 | |
23291 | struct dwarf2_locexpr_baton | |
9c541725 | 23292 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23293 | struct dwarf2_per_cu_data *per_cu, |
23294 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23295 | void *baton, bool resolve_abstract_p) |
5c631832 | 23296 | { |
918dd910 | 23297 | struct dwarf2_cu *cu; |
5c631832 JK |
23298 | struct die_info *die; |
23299 | struct attribute *attr; | |
23300 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23301 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23302 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23303 | |
918dd910 | 23304 | if (per_cu->cu == NULL) |
58f0c718 | 23305 | load_cu (per_cu, false); |
918dd910 | 23306 | cu = per_cu->cu; |
cc12ce38 DE |
23307 | if (cu == NULL) |
23308 | { | |
23309 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23310 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23311 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23312 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23313 | } |
918dd910 | 23314 | |
9c541725 | 23315 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23316 | if (!die) |
9d8780f0 SM |
23317 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23318 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23319 | |
23320 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23321 | if (!attr && resolve_abstract_p |
3360b6e7 | 23322 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
23323 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
23324 | { | |
23325 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
eba4caf2 TV |
23326 | CORE_ADDR baseaddr |
23327 | = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
23328 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
e4a62c65 | 23329 | |
3360b6e7 TV |
23330 | for (const auto &cand_off |
23331 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 23332 | { |
3360b6e7 TV |
23333 | struct dwarf2_cu *cand_cu = cu; |
23334 | struct die_info *cand | |
23335 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23336 | if (!cand | |
23337 | || !cand->parent | |
e4a62c65 TV |
23338 | || cand->parent->tag != DW_TAG_subprogram) |
23339 | continue; | |
23340 | ||
23341 | CORE_ADDR pc_low, pc_high; | |
23342 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23343 | if (pc_low == ((CORE_ADDR) -1)) |
23344 | continue; | |
23345 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23346 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23347 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23348 | continue; |
23349 | ||
23350 | die = cand; | |
23351 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23352 | break; | |
23353 | } | |
23354 | } | |
23355 | ||
5c631832 JK |
23356 | if (!attr) |
23357 | { | |
e103e986 JK |
23358 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23359 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23360 | |
e103e986 | 23361 | retval.data = NULL; |
5c631832 JK |
23362 | retval.size = 0; |
23363 | } | |
8cf6f0b1 TT |
23364 | else if (attr_form_is_section_offset (attr)) |
23365 | { | |
23366 | struct dwarf2_loclist_baton loclist_baton; | |
23367 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23368 | size_t size; | |
23369 | ||
23370 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23371 | ||
23372 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23373 | &size, pc); | |
23374 | retval.size = size; | |
23375 | } | |
5c631832 JK |
23376 | else |
23377 | { | |
23378 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23379 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23380 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23381 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23382 | |
23383 | retval.data = DW_BLOCK (attr)->data; | |
23384 | retval.size = DW_BLOCK (attr)->size; | |
23385 | } | |
23386 | retval.per_cu = cu->per_cu; | |
918dd910 | 23387 | |
ed2dc618 | 23388 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23389 | |
5c631832 | 23390 | return retval; |
348e048f DE |
23391 | } |
23392 | ||
8b9737bf TT |
23393 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23394 | offset. */ | |
23395 | ||
23396 | struct dwarf2_locexpr_baton | |
23397 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23398 | struct dwarf2_per_cu_data *per_cu, | |
23399 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23400 | void *baton) | |
23401 | { | |
9c541725 | 23402 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23403 | |
9c541725 | 23404 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23405 | } |
23406 | ||
b6807d98 TT |
23407 | /* Write a constant of a given type as target-ordered bytes into |
23408 | OBSTACK. */ | |
23409 | ||
23410 | static const gdb_byte * | |
23411 | write_constant_as_bytes (struct obstack *obstack, | |
23412 | enum bfd_endian byte_order, | |
23413 | struct type *type, | |
23414 | ULONGEST value, | |
23415 | LONGEST *len) | |
23416 | { | |
23417 | gdb_byte *result; | |
23418 | ||
23419 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23420 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23421 | store_unsigned_integer (result, *len, byte_order, value); |
23422 | ||
23423 | return result; | |
23424 | } | |
23425 | ||
23426 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23427 | pointer to the constant bytes and set LEN to the length of the | |
23428 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23429 | does not have a DW_AT_const_value, return NULL. */ | |
23430 | ||
23431 | const gdb_byte * | |
9c541725 | 23432 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23433 | struct dwarf2_per_cu_data *per_cu, |
23434 | struct obstack *obstack, | |
23435 | LONGEST *len) | |
23436 | { | |
23437 | struct dwarf2_cu *cu; | |
23438 | struct die_info *die; | |
23439 | struct attribute *attr; | |
23440 | const gdb_byte *result = NULL; | |
23441 | struct type *type; | |
23442 | LONGEST value; | |
23443 | enum bfd_endian byte_order; | |
e3b94546 | 23444 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23445 | |
b6807d98 | 23446 | if (per_cu->cu == NULL) |
58f0c718 | 23447 | load_cu (per_cu, false); |
b6807d98 | 23448 | cu = per_cu->cu; |
cc12ce38 DE |
23449 | if (cu == NULL) |
23450 | { | |
23451 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23452 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23453 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23454 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23455 | } |
b6807d98 | 23456 | |
9c541725 | 23457 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23458 | if (!die) |
9d8780f0 SM |
23459 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23460 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23461 | |
23462 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23463 | if (attr == NULL) | |
23464 | return NULL; | |
23465 | ||
e3b94546 | 23466 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23467 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23468 | ||
23469 | switch (attr->form) | |
23470 | { | |
23471 | case DW_FORM_addr: | |
336d760d | 23472 | case DW_FORM_addrx: |
b6807d98 TT |
23473 | case DW_FORM_GNU_addr_index: |
23474 | { | |
23475 | gdb_byte *tem; | |
23476 | ||
23477 | *len = cu->header.addr_size; | |
224c3ddb | 23478 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23479 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23480 | result = tem; | |
23481 | } | |
23482 | break; | |
23483 | case DW_FORM_string: | |
23484 | case DW_FORM_strp: | |
cf532bd1 | 23485 | case DW_FORM_strx: |
b6807d98 TT |
23486 | case DW_FORM_GNU_str_index: |
23487 | case DW_FORM_GNU_strp_alt: | |
23488 | /* DW_STRING is already allocated on the objfile obstack, point | |
23489 | directly to it. */ | |
23490 | result = (const gdb_byte *) DW_STRING (attr); | |
23491 | *len = strlen (DW_STRING (attr)); | |
23492 | break; | |
23493 | case DW_FORM_block1: | |
23494 | case DW_FORM_block2: | |
23495 | case DW_FORM_block4: | |
23496 | case DW_FORM_block: | |
23497 | case DW_FORM_exprloc: | |
0224619f | 23498 | case DW_FORM_data16: |
b6807d98 TT |
23499 | result = DW_BLOCK (attr)->data; |
23500 | *len = DW_BLOCK (attr)->size; | |
23501 | break; | |
23502 | ||
23503 | /* The DW_AT_const_value attributes are supposed to carry the | |
23504 | symbol's value "represented as it would be on the target | |
23505 | architecture." By the time we get here, it's already been | |
23506 | converted to host endianness, so we just need to sign- or | |
23507 | zero-extend it as appropriate. */ | |
23508 | case DW_FORM_data1: | |
23509 | type = die_type (die, cu); | |
23510 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23511 | if (result == NULL) | |
23512 | result = write_constant_as_bytes (obstack, byte_order, | |
23513 | type, value, len); | |
23514 | break; | |
23515 | case DW_FORM_data2: | |
23516 | type = die_type (die, cu); | |
23517 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23518 | if (result == NULL) | |
23519 | result = write_constant_as_bytes (obstack, byte_order, | |
23520 | type, value, len); | |
23521 | break; | |
23522 | case DW_FORM_data4: | |
23523 | type = die_type (die, cu); | |
23524 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23525 | if (result == NULL) | |
23526 | result = write_constant_as_bytes (obstack, byte_order, | |
23527 | type, value, len); | |
23528 | break; | |
23529 | case DW_FORM_data8: | |
23530 | type = die_type (die, cu); | |
23531 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23532 | if (result == NULL) | |
23533 | result = write_constant_as_bytes (obstack, byte_order, | |
23534 | type, value, len); | |
23535 | break; | |
23536 | ||
23537 | case DW_FORM_sdata: | |
663c44ac | 23538 | case DW_FORM_implicit_const: |
b6807d98 TT |
23539 | type = die_type (die, cu); |
23540 | result = write_constant_as_bytes (obstack, byte_order, | |
23541 | type, DW_SND (attr), len); | |
23542 | break; | |
23543 | ||
23544 | case DW_FORM_udata: | |
23545 | type = die_type (die, cu); | |
23546 | result = write_constant_as_bytes (obstack, byte_order, | |
23547 | type, DW_UNSND (attr), len); | |
23548 | break; | |
23549 | ||
23550 | default: | |
b98664d3 | 23551 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23552 | dwarf_form_name (attr->form)); |
23553 | break; | |
23554 | } | |
23555 | ||
23556 | return result; | |
23557 | } | |
23558 | ||
7942e96e AA |
23559 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23560 | valid type for this die is found. */ | |
23561 | ||
23562 | struct type * | |
9c541725 | 23563 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23564 | struct dwarf2_per_cu_data *per_cu) |
23565 | { | |
23566 | struct dwarf2_cu *cu; | |
23567 | struct die_info *die; | |
23568 | ||
7942e96e | 23569 | if (per_cu->cu == NULL) |
58f0c718 | 23570 | load_cu (per_cu, false); |
7942e96e AA |
23571 | cu = per_cu->cu; |
23572 | if (!cu) | |
23573 | return NULL; | |
23574 | ||
9c541725 | 23575 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23576 | if (!die) |
23577 | return NULL; | |
23578 | ||
23579 | return die_type (die, cu); | |
23580 | } | |
23581 | ||
8a9b8146 TT |
23582 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23583 | PER_CU. */ | |
23584 | ||
23585 | struct type * | |
b64f50a1 | 23586 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23587 | struct dwarf2_per_cu_data *per_cu) |
23588 | { | |
9c541725 | 23589 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23590 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23591 | } |
23592 | ||
ac9ec31b | 23593 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23594 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23595 | On exit *REF_CU is the CU of the result. |
23596 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23597 | |
23598 | static struct die_info * | |
ac9ec31b DE |
23599 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23600 | struct dwarf2_cu **ref_cu) | |
348e048f | 23601 | { |
348e048f | 23602 | struct die_info temp_die; |
c24bdb02 | 23603 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23604 | struct die_info *die; |
23605 | ||
ac9ec31b DE |
23606 | /* While it might be nice to assert sig_type->type == NULL here, |
23607 | we can get here for DW_AT_imported_declaration where we need | |
23608 | the DIE not the type. */ | |
348e048f DE |
23609 | |
23610 | /* If necessary, add it to the queue and load its DIEs. */ | |
23611 | ||
95554aad | 23612 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23613 | read_signatured_type (sig_type); |
348e048f | 23614 | |
348e048f | 23615 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23616 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23617 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23618 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23619 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23620 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23621 | if (die) |
23622 | { | |
ed2dc618 | 23623 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23624 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23625 | |
796a7ff8 DE |
23626 | /* For .gdb_index version 7 keep track of included TUs. |
23627 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23628 | if (dwarf2_per_objfile->index_table != NULL | |
23629 | && dwarf2_per_objfile->index_table->version <= 7) | |
23630 | { | |
23631 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23632 | (*ref_cu)->per_cu->imported_symtabs, | |
23633 | sig_cu->per_cu); | |
23634 | } | |
23635 | ||
348e048f | 23636 | *ref_cu = sig_cu; |
c24bdb02 KS |
23637 | if (sig_cu != cu) |
23638 | sig_cu->ancestor = cu; | |
23639 | ||
348e048f DE |
23640 | return die; |
23641 | } | |
23642 | ||
ac9ec31b DE |
23643 | return NULL; |
23644 | } | |
23645 | ||
23646 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23647 | On entry *REF_CU is the CU of SRC_DIE. | |
23648 | On exit *REF_CU is the CU of the result. | |
23649 | The result is the DIE of the type. | |
23650 | If the referenced type cannot be found an error is thrown. */ | |
23651 | ||
23652 | static struct die_info * | |
ff39bb5e | 23653 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23654 | struct dwarf2_cu **ref_cu) |
23655 | { | |
23656 | ULONGEST signature = DW_SIGNATURE (attr); | |
23657 | struct signatured_type *sig_type; | |
23658 | struct die_info *die; | |
23659 | ||
23660 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23661 | ||
a2ce51a0 | 23662 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23663 | /* sig_type will be NULL if the signatured type is missing from |
23664 | the debug info. */ | |
23665 | if (sig_type == NULL) | |
23666 | { | |
23667 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23668 | " from DIE at %s [in module %s]"), |
23669 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23670 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23671 | } |
23672 | ||
23673 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23674 | if (die == NULL) | |
23675 | { | |
23676 | dump_die_for_error (src_die); | |
23677 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23678 | " from DIE at %s [in module %s]"), |
23679 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23680 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23681 | } |
23682 | ||
23683 | return die; | |
23684 | } | |
23685 | ||
23686 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23687 | reading in and processing the type unit if necessary. */ | |
23688 | ||
23689 | static struct type * | |
23690 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23691 | struct dwarf2_cu *cu) | |
23692 | { | |
518817b3 SM |
23693 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23694 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23695 | struct signatured_type *sig_type; |
23696 | struct dwarf2_cu *type_cu; | |
23697 | struct die_info *type_die; | |
23698 | struct type *type; | |
23699 | ||
a2ce51a0 | 23700 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23701 | /* sig_type will be NULL if the signatured type is missing from |
23702 | the debug info. */ | |
23703 | if (sig_type == NULL) | |
23704 | { | |
b98664d3 | 23705 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23706 | " from DIE at %s [in module %s]"), |
23707 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23708 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23709 | return build_error_marker_type (cu, die); |
23710 | } | |
23711 | ||
23712 | /* If we already know the type we're done. */ | |
23713 | if (sig_type->type != NULL) | |
23714 | return sig_type->type; | |
23715 | ||
23716 | type_cu = cu; | |
23717 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23718 | if (type_die != NULL) | |
23719 | { | |
23720 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23721 | is created. This is important, for example, because for c++ classes | |
23722 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23723 | type = read_type_die (type_die, type_cu); | |
23724 | if (type == NULL) | |
23725 | { | |
b98664d3 | 23726 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23727 | " referenced from DIE at %s [in module %s]"), |
23728 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23729 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23730 | type = build_error_marker_type (cu, die); |
23731 | } | |
23732 | } | |
23733 | else | |
23734 | { | |
b98664d3 | 23735 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23736 | " from DIE at %s [in module %s]"), |
23737 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23738 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23739 | type = build_error_marker_type (cu, die); |
23740 | } | |
23741 | sig_type->type = type; | |
23742 | ||
23743 | return type; | |
23744 | } | |
23745 | ||
23746 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23747 | reading in and processing the type unit if necessary. */ | |
23748 | ||
23749 | static struct type * | |
ff39bb5e | 23750 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23751 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23752 | { |
23753 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23754 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23755 | { |
23756 | struct dwarf2_cu *type_cu = cu; | |
23757 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23758 | ||
23759 | return read_type_die (type_die, type_cu); | |
23760 | } | |
23761 | else if (attr->form == DW_FORM_ref_sig8) | |
23762 | { | |
23763 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23764 | } | |
23765 | else | |
23766 | { | |
518817b3 SM |
23767 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23768 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23769 | |
b98664d3 | 23770 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23771 | " at %s [in module %s]"), |
23772 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23773 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23774 | return build_error_marker_type (cu, die); |
23775 | } | |
348e048f DE |
23776 | } |
23777 | ||
e5fe5e75 | 23778 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23779 | |
23780 | static void | |
e5fe5e75 | 23781 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23782 | { |
52dc124a | 23783 | struct signatured_type *sig_type; |
348e048f | 23784 | |
f4dc4d17 DE |
23785 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23786 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23787 | ||
6721b2ec DE |
23788 | /* We have the per_cu, but we need the signatured_type. |
23789 | Fortunately this is an easy translation. */ | |
23790 | gdb_assert (per_cu->is_debug_types); | |
23791 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23792 | |
6721b2ec | 23793 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23794 | |
52dc124a | 23795 | read_signatured_type (sig_type); |
348e048f | 23796 | |
6721b2ec | 23797 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23798 | } |
23799 | ||
dee91e82 DE |
23800 | /* die_reader_func for read_signatured_type. |
23801 | This is identical to load_full_comp_unit_reader, | |
23802 | but is kept separate for now. */ | |
348e048f DE |
23803 | |
23804 | static void | |
dee91e82 | 23805 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23806 | const gdb_byte *info_ptr, |
dee91e82 DE |
23807 | struct die_info *comp_unit_die, |
23808 | int has_children, | |
23809 | void *data) | |
348e048f | 23810 | { |
dee91e82 | 23811 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23812 | |
dee91e82 DE |
23813 | gdb_assert (cu->die_hash == NULL); |
23814 | cu->die_hash = | |
23815 | htab_create_alloc_ex (cu->header.length / 12, | |
23816 | die_hash, | |
23817 | die_eq, | |
23818 | NULL, | |
23819 | &cu->comp_unit_obstack, | |
23820 | hashtab_obstack_allocate, | |
23821 | dummy_obstack_deallocate); | |
348e048f | 23822 | |
dee91e82 DE |
23823 | if (has_children) |
23824 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23825 | &info_ptr, comp_unit_die); | |
23826 | cu->dies = comp_unit_die; | |
23827 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23828 | |
23829 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23830 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23831 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23832 | or we won't be able to build types correctly. |
23833 | Similarly, if we do not read the producer, we can not apply | |
23834 | producer-specific interpretation. */ | |
95554aad | 23835 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23836 | } |
348e048f | 23837 | |
3019eac3 DE |
23838 | /* Read in a signatured type and build its CU and DIEs. |
23839 | If the type is a stub for the real type in a DWO file, | |
23840 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23841 | |
23842 | static void | |
23843 | read_signatured_type (struct signatured_type *sig_type) | |
23844 | { | |
23845 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23846 | |
3019eac3 | 23847 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23848 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23849 | |
58f0c718 | 23850 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23851 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23852 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23853 | } |
23854 | ||
c906108c SS |
23855 | /* Decode simple location descriptions. |
23856 | Given a pointer to a dwarf block that defines a location, compute | |
23857 | the location and return the value. | |
23858 | ||
4cecd739 DJ |
23859 | NOTE drow/2003-11-18: This function is called in two situations |
23860 | now: for the address of static or global variables (partial symbols | |
23861 | only) and for offsets into structures which are expected to be | |
23862 | (more or less) constant. The partial symbol case should go away, | |
23863 | and only the constant case should remain. That will let this | |
23864 | function complain more accurately. A few special modes are allowed | |
23865 | without complaint for global variables (for instance, global | |
23866 | register values and thread-local values). | |
c906108c SS |
23867 | |
23868 | A location description containing no operations indicates that the | |
4cecd739 | 23869 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23870 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23871 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23872 | complaint. |
23873 | ||
23874 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23875 | |
23876 | static CORE_ADDR | |
e7c27a73 | 23877 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23878 | { |
518817b3 | 23879 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23880 | size_t i; |
23881 | size_t size = blk->size; | |
d521ce57 | 23882 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23883 | CORE_ADDR stack[64]; |
23884 | int stacki; | |
23885 | unsigned int bytes_read, unsnd; | |
23886 | gdb_byte op; | |
c906108c | 23887 | |
21ae7a4d JK |
23888 | i = 0; |
23889 | stacki = 0; | |
23890 | stack[stacki] = 0; | |
23891 | stack[++stacki] = 0; | |
23892 | ||
23893 | while (i < size) | |
23894 | { | |
23895 | op = data[i++]; | |
23896 | switch (op) | |
23897 | { | |
23898 | case DW_OP_lit0: | |
23899 | case DW_OP_lit1: | |
23900 | case DW_OP_lit2: | |
23901 | case DW_OP_lit3: | |
23902 | case DW_OP_lit4: | |
23903 | case DW_OP_lit5: | |
23904 | case DW_OP_lit6: | |
23905 | case DW_OP_lit7: | |
23906 | case DW_OP_lit8: | |
23907 | case DW_OP_lit9: | |
23908 | case DW_OP_lit10: | |
23909 | case DW_OP_lit11: | |
23910 | case DW_OP_lit12: | |
23911 | case DW_OP_lit13: | |
23912 | case DW_OP_lit14: | |
23913 | case DW_OP_lit15: | |
23914 | case DW_OP_lit16: | |
23915 | case DW_OP_lit17: | |
23916 | case DW_OP_lit18: | |
23917 | case DW_OP_lit19: | |
23918 | case DW_OP_lit20: | |
23919 | case DW_OP_lit21: | |
23920 | case DW_OP_lit22: | |
23921 | case DW_OP_lit23: | |
23922 | case DW_OP_lit24: | |
23923 | case DW_OP_lit25: | |
23924 | case DW_OP_lit26: | |
23925 | case DW_OP_lit27: | |
23926 | case DW_OP_lit28: | |
23927 | case DW_OP_lit29: | |
23928 | case DW_OP_lit30: | |
23929 | case DW_OP_lit31: | |
23930 | stack[++stacki] = op - DW_OP_lit0; | |
23931 | break; | |
f1bea926 | 23932 | |
21ae7a4d JK |
23933 | case DW_OP_reg0: |
23934 | case DW_OP_reg1: | |
23935 | case DW_OP_reg2: | |
23936 | case DW_OP_reg3: | |
23937 | case DW_OP_reg4: | |
23938 | case DW_OP_reg5: | |
23939 | case DW_OP_reg6: | |
23940 | case DW_OP_reg7: | |
23941 | case DW_OP_reg8: | |
23942 | case DW_OP_reg9: | |
23943 | case DW_OP_reg10: | |
23944 | case DW_OP_reg11: | |
23945 | case DW_OP_reg12: | |
23946 | case DW_OP_reg13: | |
23947 | case DW_OP_reg14: | |
23948 | case DW_OP_reg15: | |
23949 | case DW_OP_reg16: | |
23950 | case DW_OP_reg17: | |
23951 | case DW_OP_reg18: | |
23952 | case DW_OP_reg19: | |
23953 | case DW_OP_reg20: | |
23954 | case DW_OP_reg21: | |
23955 | case DW_OP_reg22: | |
23956 | case DW_OP_reg23: | |
23957 | case DW_OP_reg24: | |
23958 | case DW_OP_reg25: | |
23959 | case DW_OP_reg26: | |
23960 | case DW_OP_reg27: | |
23961 | case DW_OP_reg28: | |
23962 | case DW_OP_reg29: | |
23963 | case DW_OP_reg30: | |
23964 | case DW_OP_reg31: | |
23965 | stack[++stacki] = op - DW_OP_reg0; | |
23966 | if (i < size) | |
23967 | dwarf2_complex_location_expr_complaint (); | |
23968 | break; | |
c906108c | 23969 | |
21ae7a4d JK |
23970 | case DW_OP_regx: |
23971 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23972 | i += bytes_read; | |
23973 | stack[++stacki] = unsnd; | |
23974 | if (i < size) | |
23975 | dwarf2_complex_location_expr_complaint (); | |
23976 | break; | |
c906108c | 23977 | |
21ae7a4d JK |
23978 | case DW_OP_addr: |
23979 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23980 | cu, &bytes_read); | |
23981 | i += bytes_read; | |
23982 | break; | |
d53d4ac5 | 23983 | |
21ae7a4d JK |
23984 | case DW_OP_const1u: |
23985 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23986 | i += 1; | |
23987 | break; | |
23988 | ||
23989 | case DW_OP_const1s: | |
23990 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23991 | i += 1; | |
23992 | break; | |
23993 | ||
23994 | case DW_OP_const2u: | |
23995 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23996 | i += 2; | |
23997 | break; | |
23998 | ||
23999 | case DW_OP_const2s: | |
24000 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24001 | i += 2; | |
24002 | break; | |
d53d4ac5 | 24003 | |
21ae7a4d JK |
24004 | case DW_OP_const4u: |
24005 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24006 | i += 4; | |
24007 | break; | |
24008 | ||
24009 | case DW_OP_const4s: | |
24010 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24011 | i += 4; | |
24012 | break; | |
24013 | ||
585861ea JK |
24014 | case DW_OP_const8u: |
24015 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24016 | i += 8; | |
24017 | break; | |
24018 | ||
21ae7a4d JK |
24019 | case DW_OP_constu: |
24020 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24021 | &bytes_read); | |
24022 | i += bytes_read; | |
24023 | break; | |
24024 | ||
24025 | case DW_OP_consts: | |
24026 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24027 | i += bytes_read; | |
24028 | break; | |
24029 | ||
24030 | case DW_OP_dup: | |
24031 | stack[stacki + 1] = stack[stacki]; | |
24032 | stacki++; | |
24033 | break; | |
24034 | ||
24035 | case DW_OP_plus: | |
24036 | stack[stacki - 1] += stack[stacki]; | |
24037 | stacki--; | |
24038 | break; | |
24039 | ||
24040 | case DW_OP_plus_uconst: | |
24041 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24042 | &bytes_read); | |
24043 | i += bytes_read; | |
24044 | break; | |
24045 | ||
24046 | case DW_OP_minus: | |
24047 | stack[stacki - 1] -= stack[stacki]; | |
24048 | stacki--; | |
24049 | break; | |
24050 | ||
24051 | case DW_OP_deref: | |
24052 | /* If we're not the last op, then we definitely can't encode | |
24053 | this using GDB's address_class enum. This is valid for partial | |
24054 | global symbols, although the variable's address will be bogus | |
24055 | in the psymtab. */ | |
24056 | if (i < size) | |
24057 | dwarf2_complex_location_expr_complaint (); | |
24058 | break; | |
24059 | ||
24060 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24061 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24062 | /* The top of the stack has the offset from the beginning |
24063 | of the thread control block at which the variable is located. */ | |
24064 | /* Nothing should follow this operator, so the top of stack would | |
24065 | be returned. */ | |
24066 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24067 | address will be bogus in the psymtab. Make it always at least |
24068 | non-zero to not look as a variable garbage collected by linker | |
24069 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24070 | if (i < size) |
24071 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24072 | stack[stacki]++; |
21ae7a4d JK |
24073 | break; |
24074 | ||
24075 | case DW_OP_GNU_uninit: | |
24076 | break; | |
24077 | ||
336d760d | 24078 | case DW_OP_addrx: |
3019eac3 | 24079 | case DW_OP_GNU_addr_index: |
49f6c839 | 24080 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24081 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24082 | &bytes_read); | |
24083 | i += bytes_read; | |
24084 | break; | |
24085 | ||
21ae7a4d JK |
24086 | default: |
24087 | { | |
f39c6ffd | 24088 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24089 | |
24090 | if (name) | |
b98664d3 | 24091 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
24092 | name); |
24093 | else | |
b98664d3 | 24094 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
24095 | op); |
24096 | } | |
24097 | ||
24098 | return (stack[stacki]); | |
d53d4ac5 | 24099 | } |
3c6e0cb3 | 24100 | |
21ae7a4d JK |
24101 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24102 | outside of the allocated space. Also enforce minimum>0. */ | |
24103 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24104 | { | |
b98664d3 | 24105 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
24106 | return 0; |
24107 | } | |
24108 | ||
24109 | if (stacki <= 0) | |
24110 | { | |
b98664d3 | 24111 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
24112 | return 0; |
24113 | } | |
24114 | } | |
24115 | return (stack[stacki]); | |
c906108c SS |
24116 | } |
24117 | ||
24118 | /* memory allocation interface */ | |
24119 | ||
c906108c | 24120 | static struct dwarf_block * |
7b5a2f43 | 24121 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24122 | { |
8d749320 | 24123 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24124 | } |
24125 | ||
c906108c | 24126 | static struct die_info * |
b60c80d6 | 24127 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24128 | { |
24129 | struct die_info *die; | |
b60c80d6 DJ |
24130 | size_t size = sizeof (struct die_info); |
24131 | ||
24132 | if (num_attrs > 1) | |
24133 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24134 | |
b60c80d6 | 24135 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24136 | memset (die, 0, sizeof (struct die_info)); |
24137 | return (die); | |
24138 | } | |
2e276125 JB |
24139 | |
24140 | \f | |
24141 | /* Macro support. */ | |
24142 | ||
233d95b5 JK |
24143 | /* Return file name relative to the compilation directory of file number I in |
24144 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24145 | responsible for freeing it. */ |
233d95b5 | 24146 | |
2e276125 | 24147 | static char * |
233d95b5 | 24148 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24149 | { |
6a83a1e6 EZ |
24150 | /* Is the file number a valid index into the line header's file name |
24151 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24152 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 24153 | { |
8c43009f | 24154 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 24155 | |
8c43009f PA |
24156 | if (!IS_ABSOLUTE_PATH (fe.name)) |
24157 | { | |
24158 | const char *dir = fe.include_dir (lh); | |
24159 | if (dir != NULL) | |
24160 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
24161 | } | |
24162 | return xstrdup (fe.name); | |
6a83a1e6 | 24163 | } |
2e276125 JB |
24164 | else |
24165 | { | |
6a83a1e6 EZ |
24166 | /* The compiler produced a bogus file number. We can at least |
24167 | record the macro definitions made in the file, even if we | |
24168 | won't be able to find the file by name. */ | |
24169 | char fake_name[80]; | |
9a619af0 | 24170 | |
8c042590 PM |
24171 | xsnprintf (fake_name, sizeof (fake_name), |
24172 | "<bad macro file number %d>", file); | |
2e276125 | 24173 | |
b98664d3 | 24174 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 24175 | file); |
2e276125 | 24176 | |
6a83a1e6 | 24177 | return xstrdup (fake_name); |
2e276125 JB |
24178 | } |
24179 | } | |
24180 | ||
233d95b5 JK |
24181 | /* Return the full name of file number I in *LH's file name table. |
24182 | Use COMP_DIR as the name of the current directory of the | |
24183 | compilation. The result is allocated using xmalloc; the caller is | |
24184 | responsible for freeing it. */ | |
24185 | static char * | |
24186 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24187 | { | |
24188 | /* Is the file number a valid index into the line header's file name | |
24189 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24190 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
24191 | { |
24192 | char *relative = file_file_name (file, lh); | |
24193 | ||
24194 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24195 | return relative; | |
b36cec19 PA |
24196 | return reconcat (relative, comp_dir, SLASH_STRING, |
24197 | relative, (char *) NULL); | |
233d95b5 JK |
24198 | } |
24199 | else | |
24200 | return file_file_name (file, lh); | |
24201 | } | |
24202 | ||
2e276125 JB |
24203 | |
24204 | static struct macro_source_file * | |
804d2729 TT |
24205 | macro_start_file (struct dwarf2_cu *cu, |
24206 | int file, int line, | |
2e276125 | 24207 | struct macro_source_file *current_file, |
43f3e411 | 24208 | struct line_header *lh) |
2e276125 | 24209 | { |
233d95b5 JK |
24210 | /* File name relative to the compilation directory of this source file. */ |
24211 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24212 | |
2e276125 | 24213 | if (! current_file) |
abc9d0dc | 24214 | { |
fc474241 DE |
24215 | /* Note: We don't create a macro table for this compilation unit |
24216 | at all until we actually get a filename. */ | |
c24bdb02 | 24217 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 24218 | |
abc9d0dc TT |
24219 | /* If we have no current file, then this must be the start_file |
24220 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24221 | current_file = macro_set_main (macro_table, file_name); |
24222 | macro_define_special (macro_table); | |
abc9d0dc | 24223 | } |
2e276125 | 24224 | else |
233d95b5 | 24225 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24226 | |
233d95b5 | 24227 | xfree (file_name); |
6e70227d | 24228 | |
2e276125 JB |
24229 | return current_file; |
24230 | } | |
24231 | ||
2e276125 JB |
24232 | static const char * |
24233 | consume_improper_spaces (const char *p, const char *body) | |
24234 | { | |
24235 | if (*p == ' ') | |
24236 | { | |
b98664d3 | 24237 | complaint (_("macro definition contains spaces " |
3e43a32a | 24238 | "in formal argument list:\n`%s'"), |
4d3c2250 | 24239 | body); |
2e276125 JB |
24240 | |
24241 | while (*p == ' ') | |
24242 | p++; | |
24243 | } | |
24244 | ||
24245 | return p; | |
24246 | } | |
24247 | ||
24248 | ||
24249 | static void | |
24250 | parse_macro_definition (struct macro_source_file *file, int line, | |
24251 | const char *body) | |
24252 | { | |
24253 | const char *p; | |
24254 | ||
24255 | /* The body string takes one of two forms. For object-like macro | |
24256 | definitions, it should be: | |
24257 | ||
24258 | <macro name> " " <definition> | |
24259 | ||
24260 | For function-like macro definitions, it should be: | |
24261 | ||
24262 | <macro name> "() " <definition> | |
24263 | or | |
24264 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24265 | ||
24266 | Spaces may appear only where explicitly indicated, and in the | |
24267 | <definition>. | |
24268 | ||
24269 | The Dwarf 2 spec says that an object-like macro's name is always | |
24270 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24271 | the space when the macro's definition is the empty string. |
2e276125 JB |
24272 | |
24273 | The Dwarf 2 spec says that there should be no spaces between the | |
24274 | formal arguments in a function-like macro's formal argument list, | |
24275 | but versions of GCC around March 2002 include spaces after the | |
24276 | commas. */ | |
24277 | ||
24278 | ||
24279 | /* Find the extent of the macro name. The macro name is terminated | |
24280 | by either a space or null character (for an object-like macro) or | |
24281 | an opening paren (for a function-like macro). */ | |
24282 | for (p = body; *p; p++) | |
24283 | if (*p == ' ' || *p == '(') | |
24284 | break; | |
24285 | ||
24286 | if (*p == ' ' || *p == '\0') | |
24287 | { | |
24288 | /* It's an object-like macro. */ | |
24289 | int name_len = p - body; | |
3f8a7804 | 24290 | char *name = savestring (body, name_len); |
2e276125 JB |
24291 | const char *replacement; |
24292 | ||
24293 | if (*p == ' ') | |
24294 | replacement = body + name_len + 1; | |
24295 | else | |
24296 | { | |
4d3c2250 | 24297 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24298 | replacement = body + name_len; |
24299 | } | |
6e70227d | 24300 | |
2e276125 JB |
24301 | macro_define_object (file, line, name, replacement); |
24302 | ||
24303 | xfree (name); | |
24304 | } | |
24305 | else if (*p == '(') | |
24306 | { | |
24307 | /* It's a function-like macro. */ | |
3f8a7804 | 24308 | char *name = savestring (body, p - body); |
2e276125 JB |
24309 | int argc = 0; |
24310 | int argv_size = 1; | |
8d749320 | 24311 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24312 | |
24313 | p++; | |
24314 | ||
24315 | p = consume_improper_spaces (p, body); | |
24316 | ||
24317 | /* Parse the formal argument list. */ | |
24318 | while (*p && *p != ')') | |
24319 | { | |
24320 | /* Find the extent of the current argument name. */ | |
24321 | const char *arg_start = p; | |
24322 | ||
24323 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24324 | p++; | |
24325 | ||
24326 | if (! *p || p == arg_start) | |
4d3c2250 | 24327 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24328 | else |
24329 | { | |
24330 | /* Make sure argv has room for the new argument. */ | |
24331 | if (argc >= argv_size) | |
24332 | { | |
24333 | argv_size *= 2; | |
224c3ddb | 24334 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24335 | } |
24336 | ||
3f8a7804 | 24337 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24338 | } |
24339 | ||
24340 | p = consume_improper_spaces (p, body); | |
24341 | ||
24342 | /* Consume the comma, if present. */ | |
24343 | if (*p == ',') | |
24344 | { | |
24345 | p++; | |
24346 | ||
24347 | p = consume_improper_spaces (p, body); | |
24348 | } | |
24349 | } | |
24350 | ||
24351 | if (*p == ')') | |
24352 | { | |
24353 | p++; | |
24354 | ||
24355 | if (*p == ' ') | |
24356 | /* Perfectly formed definition, no complaints. */ | |
24357 | macro_define_function (file, line, name, | |
6e70227d | 24358 | argc, (const char **) argv, |
2e276125 JB |
24359 | p + 1); |
24360 | else if (*p == '\0') | |
24361 | { | |
24362 | /* Complain, but do define it. */ | |
4d3c2250 | 24363 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24364 | macro_define_function (file, line, name, |
6e70227d | 24365 | argc, (const char **) argv, |
2e276125 JB |
24366 | p); |
24367 | } | |
24368 | else | |
24369 | /* Just complain. */ | |
4d3c2250 | 24370 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24371 | } |
24372 | else | |
24373 | /* Just complain. */ | |
4d3c2250 | 24374 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24375 | |
24376 | xfree (name); | |
24377 | { | |
24378 | int i; | |
24379 | ||
24380 | for (i = 0; i < argc; i++) | |
24381 | xfree (argv[i]); | |
24382 | } | |
24383 | xfree (argv); | |
24384 | } | |
24385 | else | |
4d3c2250 | 24386 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24387 | } |
24388 | ||
cf2c3c16 TT |
24389 | /* Skip some bytes from BYTES according to the form given in FORM. |
24390 | Returns the new pointer. */ | |
2e276125 | 24391 | |
d521ce57 TT |
24392 | static const gdb_byte * |
24393 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24394 | enum dwarf_form form, |
24395 | unsigned int offset_size, | |
24396 | struct dwarf2_section_info *section) | |
2e276125 | 24397 | { |
cf2c3c16 | 24398 | unsigned int bytes_read; |
2e276125 | 24399 | |
cf2c3c16 | 24400 | switch (form) |
2e276125 | 24401 | { |
cf2c3c16 TT |
24402 | case DW_FORM_data1: |
24403 | case DW_FORM_flag: | |
24404 | ++bytes; | |
24405 | break; | |
24406 | ||
24407 | case DW_FORM_data2: | |
24408 | bytes += 2; | |
24409 | break; | |
24410 | ||
24411 | case DW_FORM_data4: | |
24412 | bytes += 4; | |
24413 | break; | |
24414 | ||
24415 | case DW_FORM_data8: | |
24416 | bytes += 8; | |
24417 | break; | |
24418 | ||
0224619f JK |
24419 | case DW_FORM_data16: |
24420 | bytes += 16; | |
24421 | break; | |
24422 | ||
cf2c3c16 TT |
24423 | case DW_FORM_string: |
24424 | read_direct_string (abfd, bytes, &bytes_read); | |
24425 | bytes += bytes_read; | |
24426 | break; | |
24427 | ||
24428 | case DW_FORM_sec_offset: | |
24429 | case DW_FORM_strp: | |
36586728 | 24430 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24431 | bytes += offset_size; |
24432 | break; | |
24433 | ||
24434 | case DW_FORM_block: | |
24435 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24436 | bytes += bytes_read; | |
24437 | break; | |
24438 | ||
24439 | case DW_FORM_block1: | |
24440 | bytes += 1 + read_1_byte (abfd, bytes); | |
24441 | break; | |
24442 | case DW_FORM_block2: | |
24443 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24444 | break; | |
24445 | case DW_FORM_block4: | |
24446 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24447 | break; | |
24448 | ||
336d760d | 24449 | case DW_FORM_addrx: |
cf2c3c16 | 24450 | case DW_FORM_sdata: |
cf532bd1 | 24451 | case DW_FORM_strx: |
cf2c3c16 | 24452 | case DW_FORM_udata: |
3019eac3 DE |
24453 | case DW_FORM_GNU_addr_index: |
24454 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24455 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24456 | if (bytes == NULL) |
24457 | { | |
24458 | dwarf2_section_buffer_overflow_complaint (section); | |
24459 | return NULL; | |
24460 | } | |
cf2c3c16 TT |
24461 | break; |
24462 | ||
663c44ac JK |
24463 | case DW_FORM_implicit_const: |
24464 | break; | |
24465 | ||
cf2c3c16 TT |
24466 | default: |
24467 | { | |
b98664d3 | 24468 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24469 | form, get_section_name (section)); |
cf2c3c16 TT |
24470 | return NULL; |
24471 | } | |
2e276125 JB |
24472 | } |
24473 | ||
cf2c3c16 TT |
24474 | return bytes; |
24475 | } | |
757a13d0 | 24476 | |
cf2c3c16 TT |
24477 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24478 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24479 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24480 | |
d521ce57 | 24481 | static const gdb_byte * |
cf2c3c16 | 24482 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24483 | const gdb_byte **opcode_definitions, |
24484 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24485 | bfd *abfd, |
24486 | unsigned int offset_size, | |
24487 | struct dwarf2_section_info *section) | |
24488 | { | |
24489 | unsigned int bytes_read, i; | |
24490 | unsigned long arg; | |
d521ce57 | 24491 | const gdb_byte *defn; |
2e276125 | 24492 | |
cf2c3c16 | 24493 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24494 | { |
b98664d3 | 24495 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24496 | opcode); |
24497 | return NULL; | |
24498 | } | |
2e276125 | 24499 | |
cf2c3c16 TT |
24500 | defn = opcode_definitions[opcode]; |
24501 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24502 | defn += bytes_read; | |
2e276125 | 24503 | |
cf2c3c16 TT |
24504 | for (i = 0; i < arg; ++i) |
24505 | { | |
aead7601 SM |
24506 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24507 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24508 | section); |
cf2c3c16 TT |
24509 | if (mac_ptr == NULL) |
24510 | { | |
24511 | /* skip_form_bytes already issued the complaint. */ | |
24512 | return NULL; | |
24513 | } | |
24514 | } | |
757a13d0 | 24515 | |
cf2c3c16 TT |
24516 | return mac_ptr; |
24517 | } | |
757a13d0 | 24518 | |
cf2c3c16 TT |
24519 | /* A helper function which parses the header of a macro section. |
24520 | If the macro section is the extended (for now called "GNU") type, | |
24521 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24522 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24523 | |
d521ce57 TT |
24524 | static const gdb_byte * |
24525 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24526 | bfd *abfd, |
d521ce57 | 24527 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24528 | unsigned int *offset_size, |
24529 | int section_is_gnu) | |
24530 | { | |
24531 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24532 | |
cf2c3c16 TT |
24533 | if (section_is_gnu) |
24534 | { | |
24535 | unsigned int version, flags; | |
757a13d0 | 24536 | |
cf2c3c16 | 24537 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24538 | if (version != 4 && version != 5) |
cf2c3c16 | 24539 | { |
b98664d3 | 24540 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24541 | version); |
24542 | return NULL; | |
24543 | } | |
24544 | mac_ptr += 2; | |
757a13d0 | 24545 | |
cf2c3c16 TT |
24546 | flags = read_1_byte (abfd, mac_ptr); |
24547 | ++mac_ptr; | |
24548 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24549 | |
cf2c3c16 TT |
24550 | if ((flags & 2) != 0) |
24551 | /* We don't need the line table offset. */ | |
24552 | mac_ptr += *offset_size; | |
757a13d0 | 24553 | |
cf2c3c16 TT |
24554 | /* Vendor opcode descriptions. */ |
24555 | if ((flags & 4) != 0) | |
24556 | { | |
24557 | unsigned int i, count; | |
757a13d0 | 24558 | |
cf2c3c16 TT |
24559 | count = read_1_byte (abfd, mac_ptr); |
24560 | ++mac_ptr; | |
24561 | for (i = 0; i < count; ++i) | |
24562 | { | |
24563 | unsigned int opcode, bytes_read; | |
24564 | unsigned long arg; | |
24565 | ||
24566 | opcode = read_1_byte (abfd, mac_ptr); | |
24567 | ++mac_ptr; | |
24568 | opcode_definitions[opcode] = mac_ptr; | |
24569 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24570 | mac_ptr += bytes_read; | |
24571 | mac_ptr += arg; | |
24572 | } | |
757a13d0 | 24573 | } |
cf2c3c16 | 24574 | } |
757a13d0 | 24575 | |
cf2c3c16 TT |
24576 | return mac_ptr; |
24577 | } | |
757a13d0 | 24578 | |
cf2c3c16 | 24579 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24580 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24581 | |
24582 | static void | |
804d2729 | 24583 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24584 | bfd *abfd, |
d521ce57 | 24585 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24586 | struct macro_source_file *current_file, |
43f3e411 | 24587 | struct line_header *lh, |
cf2c3c16 | 24588 | struct dwarf2_section_info *section, |
36586728 | 24589 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24590 | unsigned int offset_size, |
8fc3fc34 | 24591 | htab_t include_hash) |
cf2c3c16 | 24592 | { |
804d2729 TT |
24593 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24594 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24595 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24596 | enum dwarf_macro_record_type macinfo_type; |
24597 | int at_commandline; | |
d521ce57 | 24598 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24599 | |
cf2c3c16 TT |
24600 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24601 | &offset_size, section_is_gnu); | |
24602 | if (mac_ptr == NULL) | |
24603 | { | |
24604 | /* We already issued a complaint. */ | |
24605 | return; | |
24606 | } | |
757a13d0 JK |
24607 | |
24608 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24609 | GDB is still reading the definitions from command line. First | |
24610 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24611 | to create CURRENT_FILE for the main source holding also the command line | |
24612 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24613 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24614 | ||
24615 | at_commandline = 1; | |
24616 | ||
24617 | do | |
24618 | { | |
24619 | /* Do we at least have room for a macinfo type byte? */ | |
24620 | if (mac_ptr >= mac_end) | |
24621 | { | |
f664829e | 24622 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24623 | break; |
24624 | } | |
24625 | ||
aead7601 | 24626 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24627 | mac_ptr++; |
24628 | ||
cf2c3c16 TT |
24629 | /* Note that we rely on the fact that the corresponding GNU and |
24630 | DWARF constants are the same. */ | |
132448f8 SM |
24631 | DIAGNOSTIC_PUSH |
24632 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24633 | switch (macinfo_type) |
24634 | { | |
24635 | /* A zero macinfo type indicates the end of the macro | |
24636 | information. */ | |
24637 | case 0: | |
24638 | break; | |
2e276125 | 24639 | |
0af92d60 JK |
24640 | case DW_MACRO_define: |
24641 | case DW_MACRO_undef: | |
24642 | case DW_MACRO_define_strp: | |
24643 | case DW_MACRO_undef_strp: | |
24644 | case DW_MACRO_define_sup: | |
24645 | case DW_MACRO_undef_sup: | |
2e276125 | 24646 | { |
891d2f0b | 24647 | unsigned int bytes_read; |
2e276125 | 24648 | int line; |
d521ce57 | 24649 | const char *body; |
cf2c3c16 | 24650 | int is_define; |
2e276125 | 24651 | |
cf2c3c16 TT |
24652 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24653 | mac_ptr += bytes_read; | |
24654 | ||
0af92d60 JK |
24655 | if (macinfo_type == DW_MACRO_define |
24656 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24657 | { |
24658 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24659 | mac_ptr += bytes_read; | |
24660 | } | |
24661 | else | |
24662 | { | |
24663 | LONGEST str_offset; | |
24664 | ||
24665 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24666 | mac_ptr += offset_size; | |
2e276125 | 24667 | |
0af92d60 JK |
24668 | if (macinfo_type == DW_MACRO_define_sup |
24669 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24670 | || section_is_dwz) |
36586728 | 24671 | { |
ed2dc618 SM |
24672 | struct dwz_file *dwz |
24673 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24674 | |
ed2dc618 SM |
24675 | body = read_indirect_string_from_dwz (objfile, |
24676 | dwz, str_offset); | |
36586728 TT |
24677 | } |
24678 | else | |
ed2dc618 SM |
24679 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24680 | abfd, str_offset); | |
cf2c3c16 TT |
24681 | } |
24682 | ||
0af92d60 JK |
24683 | is_define = (macinfo_type == DW_MACRO_define |
24684 | || macinfo_type == DW_MACRO_define_strp | |
24685 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24686 | if (! current_file) |
757a13d0 JK |
24687 | { |
24688 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24689 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24690 | "on line %d: %s"), |
cf2c3c16 TT |
24691 | is_define ? _("definition") : _("undefinition"), |
24692 | line, body); | |
757a13d0 JK |
24693 | break; |
24694 | } | |
3e43a32a MS |
24695 | if ((line == 0 && !at_commandline) |
24696 | || (line != 0 && at_commandline)) | |
b98664d3 | 24697 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24698 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24699 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24700 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24701 | ||
955b06fa | 24702 | if (body == NULL) |
7bede828 | 24703 | { |
955b06fa SDJ |
24704 | /* Fedora's rpm-build's "debugedit" binary |
24705 | corrupted .debug_macro sections. | |
24706 | ||
24707 | For more info, see | |
24708 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24709 | complaint (_("debug info gives %s invalid macro %s " | |
24710 | "without body (corrupted?) at line %d " | |
24711 | "on file %s"), | |
24712 | at_commandline ? _("command-line") : _("in-file"), | |
24713 | is_define ? _("definition") : _("undefinition"), | |
24714 | line, current_file->filename); | |
7bede828 | 24715 | } |
955b06fa SDJ |
24716 | else if (is_define) |
24717 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24718 | else |
24719 | { | |
0af92d60 JK |
24720 | gdb_assert (macinfo_type == DW_MACRO_undef |
24721 | || macinfo_type == DW_MACRO_undef_strp | |
24722 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24723 | macro_undef (current_file, line, body); |
24724 | } | |
2e276125 JB |
24725 | } |
24726 | break; | |
24727 | ||
0af92d60 | 24728 | case DW_MACRO_start_file: |
2e276125 | 24729 | { |
891d2f0b | 24730 | unsigned int bytes_read; |
2e276125 JB |
24731 | int line, file; |
24732 | ||
24733 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24734 | mac_ptr += bytes_read; | |
24735 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24736 | mac_ptr += bytes_read; | |
24737 | ||
3e43a32a MS |
24738 | if ((line == 0 && !at_commandline) |
24739 | || (line != 0 && at_commandline)) | |
b98664d3 | 24740 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24741 | "from %s at %s line %d"), |
24742 | file, at_commandline ? _("command-line") : _("file"), | |
24743 | line == 0 ? _("zero") : _("non-zero"), line); | |
24744 | ||
24745 | if (at_commandline) | |
24746 | { | |
0af92d60 | 24747 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24748 | pass one. */ |
757a13d0 JK |
24749 | at_commandline = 0; |
24750 | } | |
24751 | else | |
804d2729 TT |
24752 | current_file = macro_start_file (cu, file, line, current_file, |
24753 | lh); | |
2e276125 JB |
24754 | } |
24755 | break; | |
24756 | ||
0af92d60 | 24757 | case DW_MACRO_end_file: |
2e276125 | 24758 | if (! current_file) |
b98664d3 | 24759 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24760 | "`close_file' directive")); |
2e276125 JB |
24761 | else |
24762 | { | |
24763 | current_file = current_file->included_by; | |
24764 | if (! current_file) | |
24765 | { | |
cf2c3c16 | 24766 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24767 | |
24768 | /* GCC circa March 2002 doesn't produce the zero | |
24769 | type byte marking the end of the compilation | |
24770 | unit. Complain if it's not there, but exit no | |
24771 | matter what. */ | |
24772 | ||
24773 | /* Do we at least have room for a macinfo type byte? */ | |
24774 | if (mac_ptr >= mac_end) | |
24775 | { | |
f664829e | 24776 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24777 | return; |
24778 | } | |
24779 | ||
24780 | /* We don't increment mac_ptr here, so this is just | |
24781 | a look-ahead. */ | |
aead7601 SM |
24782 | next_type |
24783 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24784 | mac_ptr); | |
2e276125 | 24785 | if (next_type != 0) |
b98664d3 | 24786 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24787 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24788 | |
24789 | return; | |
24790 | } | |
24791 | } | |
24792 | break; | |
24793 | ||
0af92d60 JK |
24794 | case DW_MACRO_import: |
24795 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24796 | { |
24797 | LONGEST offset; | |
8fc3fc34 | 24798 | void **slot; |
a036ba48 TT |
24799 | bfd *include_bfd = abfd; |
24800 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24801 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24802 | int is_dwz = section_is_dwz; |
d521ce57 | 24803 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24804 | |
24805 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24806 | mac_ptr += offset_size; | |
24807 | ||
0af92d60 | 24808 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24809 | { |
ed2dc618 | 24810 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24811 | |
4d663531 | 24812 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24813 | |
a036ba48 | 24814 | include_section = &dwz->macro; |
a32a8923 | 24815 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24816 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24817 | is_dwz = 1; | |
24818 | } | |
24819 | ||
24820 | new_mac_ptr = include_section->buffer + offset; | |
24821 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24822 | ||
8fc3fc34 TT |
24823 | if (*slot != NULL) |
24824 | { | |
24825 | /* This has actually happened; see | |
24826 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24827 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24828 | ".debug_macro section")); |
24829 | } | |
24830 | else | |
24831 | { | |
d521ce57 | 24832 | *slot = (void *) new_mac_ptr; |
36586728 | 24833 | |
804d2729 | 24834 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24835 | include_mac_end, current_file, lh, |
36586728 | 24836 | section, section_is_gnu, is_dwz, |
4d663531 | 24837 | offset_size, include_hash); |
8fc3fc34 | 24838 | |
d521ce57 | 24839 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24840 | } |
cf2c3c16 TT |
24841 | } |
24842 | break; | |
24843 | ||
2e276125 | 24844 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24845 | if (!section_is_gnu) |
24846 | { | |
24847 | unsigned int bytes_read; | |
2e276125 | 24848 | |
ac298888 TT |
24849 | /* This reads the constant, but since we don't recognize |
24850 | any vendor extensions, we ignore it. */ | |
24851 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24852 | mac_ptr += bytes_read; |
24853 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24854 | mac_ptr += bytes_read; | |
2e276125 | 24855 | |
cf2c3c16 TT |
24856 | /* We don't recognize any vendor extensions. */ |
24857 | break; | |
24858 | } | |
24859 | /* FALLTHROUGH */ | |
24860 | ||
24861 | default: | |
24862 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24863 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24864 | section); |
24865 | if (mac_ptr == NULL) | |
24866 | return; | |
24867 | break; | |
2e276125 | 24868 | } |
132448f8 | 24869 | DIAGNOSTIC_POP |
757a13d0 | 24870 | } while (macinfo_type != 0); |
2e276125 | 24871 | } |
8e19ed76 | 24872 | |
cf2c3c16 | 24873 | static void |
09262596 | 24874 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24875 | int section_is_gnu) |
cf2c3c16 | 24876 | { |
518817b3 SM |
24877 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24878 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24879 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24880 | struct line_header *lh = cu->line_header; |
24881 | bfd *abfd; | |
d521ce57 | 24882 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24883 | struct macro_source_file *current_file = 0; |
24884 | enum dwarf_macro_record_type macinfo_type; | |
24885 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24886 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24887 | void **slot; |
09262596 DE |
24888 | struct dwarf2_section_info *section; |
24889 | const char *section_name; | |
24890 | ||
24891 | if (cu->dwo_unit != NULL) | |
24892 | { | |
24893 | if (section_is_gnu) | |
24894 | { | |
24895 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24896 | section_name = ".debug_macro.dwo"; | |
24897 | } | |
24898 | else | |
24899 | { | |
24900 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24901 | section_name = ".debug_macinfo.dwo"; | |
24902 | } | |
24903 | } | |
24904 | else | |
24905 | { | |
24906 | if (section_is_gnu) | |
24907 | { | |
24908 | section = &dwarf2_per_objfile->macro; | |
24909 | section_name = ".debug_macro"; | |
24910 | } | |
24911 | else | |
24912 | { | |
24913 | section = &dwarf2_per_objfile->macinfo; | |
24914 | section_name = ".debug_macinfo"; | |
24915 | } | |
24916 | } | |
cf2c3c16 | 24917 | |
bb5ed363 | 24918 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24919 | if (section->buffer == NULL) |
24920 | { | |
b98664d3 | 24921 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24922 | return; |
24923 | } | |
a32a8923 | 24924 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24925 | |
24926 | /* First pass: Find the name of the base filename. | |
24927 | This filename is needed in order to process all macros whose definition | |
24928 | (or undefinition) comes from the command line. These macros are defined | |
24929 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24930 | associated to the base file. | |
24931 | ||
24932 | To determine the base file name, we scan the macro definitions until we | |
24933 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24934 | CURRENT_FILE accordingly so that any macro definition found before the | |
24935 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24936 | ||
24937 | mac_ptr = section->buffer + offset; | |
24938 | mac_end = section->buffer + section->size; | |
24939 | ||
24940 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24941 | &offset_size, section_is_gnu); | |
24942 | if (mac_ptr == NULL) | |
24943 | { | |
24944 | /* We already issued a complaint. */ | |
24945 | return; | |
24946 | } | |
24947 | ||
24948 | do | |
24949 | { | |
24950 | /* Do we at least have room for a macinfo type byte? */ | |
24951 | if (mac_ptr >= mac_end) | |
24952 | { | |
24953 | /* Complaint is printed during the second pass as GDB will probably | |
24954 | stop the first pass earlier upon finding | |
24955 | DW_MACINFO_start_file. */ | |
24956 | break; | |
24957 | } | |
24958 | ||
aead7601 | 24959 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24960 | mac_ptr++; |
24961 | ||
24962 | /* Note that we rely on the fact that the corresponding GNU and | |
24963 | DWARF constants are the same. */ | |
132448f8 SM |
24964 | DIAGNOSTIC_PUSH |
24965 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24966 | switch (macinfo_type) |
24967 | { | |
24968 | /* A zero macinfo type indicates the end of the macro | |
24969 | information. */ | |
24970 | case 0: | |
24971 | break; | |
24972 | ||
0af92d60 JK |
24973 | case DW_MACRO_define: |
24974 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24975 | /* Only skip the data by MAC_PTR. */ |
24976 | { | |
24977 | unsigned int bytes_read; | |
24978 | ||
24979 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24980 | mac_ptr += bytes_read; | |
24981 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24982 | mac_ptr += bytes_read; | |
24983 | } | |
24984 | break; | |
24985 | ||
0af92d60 | 24986 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24987 | { |
24988 | unsigned int bytes_read; | |
24989 | int line, file; | |
24990 | ||
24991 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24992 | mac_ptr += bytes_read; | |
24993 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24994 | mac_ptr += bytes_read; | |
24995 | ||
804d2729 | 24996 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24997 | } |
24998 | break; | |
24999 | ||
0af92d60 | 25000 | case DW_MACRO_end_file: |
cf2c3c16 TT |
25001 | /* No data to skip by MAC_PTR. */ |
25002 | break; | |
25003 | ||
0af92d60 JK |
25004 | case DW_MACRO_define_strp: |
25005 | case DW_MACRO_undef_strp: | |
25006 | case DW_MACRO_define_sup: | |
25007 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
25008 | { |
25009 | unsigned int bytes_read; | |
25010 | ||
25011 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25012 | mac_ptr += bytes_read; | |
25013 | mac_ptr += offset_size; | |
25014 | } | |
25015 | break; | |
25016 | ||
0af92d60 JK |
25017 | case DW_MACRO_import: |
25018 | case DW_MACRO_import_sup: | |
cf2c3c16 | 25019 | /* Note that, according to the spec, a transparent include |
0af92d60 | 25020 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
25021 | skip this opcode. */ |
25022 | mac_ptr += offset_size; | |
25023 | break; | |
25024 | ||
25025 | case DW_MACINFO_vendor_ext: | |
25026 | /* Only skip the data by MAC_PTR. */ | |
25027 | if (!section_is_gnu) | |
25028 | { | |
25029 | unsigned int bytes_read; | |
25030 | ||
25031 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25032 | mac_ptr += bytes_read; | |
25033 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25034 | mac_ptr += bytes_read; | |
25035 | } | |
25036 | /* FALLTHROUGH */ | |
25037 | ||
25038 | default: | |
25039 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25040 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25041 | section); |
25042 | if (mac_ptr == NULL) | |
25043 | return; | |
25044 | break; | |
25045 | } | |
132448f8 | 25046 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25047 | } while (macinfo_type != 0 && current_file == NULL); |
25048 | ||
25049 | /* Second pass: Process all entries. | |
25050 | ||
25051 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25052 | command-line macro definitions/undefinitions. This flag is unset when we | |
25053 | reach the first DW_MACINFO_start_file entry. */ | |
25054 | ||
fc4007c9 TT |
25055 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25056 | htab_eq_pointer, | |
25057 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25058 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25059 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25060 | *slot = (void *) mac_ptr; |
804d2729 | 25061 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 25062 | current_file, lh, section, |
fc4007c9 TT |
25063 | section_is_gnu, 0, offset_size, |
25064 | include_hash.get ()); | |
cf2c3c16 TT |
25065 | } |
25066 | ||
8e19ed76 | 25067 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25068 | if so return true else false. */ |
380bca97 | 25069 | |
8e19ed76 | 25070 | static int |
6e5a29e1 | 25071 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25072 | { |
25073 | return (attr == NULL ? 0 : | |
25074 | attr->form == DW_FORM_block1 | |
25075 | || attr->form == DW_FORM_block2 | |
25076 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25077 | || attr->form == DW_FORM_block |
25078 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25079 | } |
4c2df51b | 25080 | |
c6a0999f JB |
25081 | /* Return non-zero if ATTR's value is a section offset --- classes |
25082 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25083 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25084 | ||
25085 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25086 | may have a value that belongs to more than one of these classes; it | |
25087 | would be ambiguous if we did, because we use the same forms for all | |
25088 | of them. */ | |
380bca97 | 25089 | |
3690dd37 | 25090 | static int |
6e5a29e1 | 25091 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25092 | { |
25093 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25094 | || attr->form == DW_FORM_data8 |
25095 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25096 | } |
25097 | ||
3690dd37 JB |
25098 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25099 | zero otherwise. When this function returns true, you can apply | |
25100 | dwarf2_get_attr_constant_value to it. | |
25101 | ||
25102 | However, note that for some attributes you must check | |
25103 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25104 | and DW_FORM_data8 are members of both the constant class, and of | |
25105 | the classes that contain offsets into other debug sections | |
25106 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25107 | that, if an attribute's can be either a constant or one of the | |
25108 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25109 | taken as section offsets, not constants. |
25110 | ||
25111 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25112 | cannot handle that. */ | |
380bca97 | 25113 | |
3690dd37 | 25114 | static int |
6e5a29e1 | 25115 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25116 | { |
25117 | switch (attr->form) | |
25118 | { | |
25119 | case DW_FORM_sdata: | |
25120 | case DW_FORM_udata: | |
25121 | case DW_FORM_data1: | |
25122 | case DW_FORM_data2: | |
25123 | case DW_FORM_data4: | |
25124 | case DW_FORM_data8: | |
663c44ac | 25125 | case DW_FORM_implicit_const: |
3690dd37 JB |
25126 | return 1; |
25127 | default: | |
25128 | return 0; | |
25129 | } | |
25130 | } | |
25131 | ||
7771576e SA |
25132 | |
25133 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25134 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25135 | ||
25136 | static int | |
6e5a29e1 | 25137 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25138 | { |
25139 | switch (attr->form) | |
25140 | { | |
25141 | case DW_FORM_ref_addr: | |
25142 | case DW_FORM_ref1: | |
25143 | case DW_FORM_ref2: | |
25144 | case DW_FORM_ref4: | |
25145 | case DW_FORM_ref8: | |
25146 | case DW_FORM_ref_udata: | |
25147 | case DW_FORM_GNU_ref_alt: | |
25148 | return 1; | |
25149 | default: | |
25150 | return 0; | |
25151 | } | |
25152 | } | |
25153 | ||
3019eac3 DE |
25154 | /* Return the .debug_loc section to use for CU. |
25155 | For DWO files use .debug_loc.dwo. */ | |
25156 | ||
25157 | static struct dwarf2_section_info * | |
25158 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25159 | { | |
518817b3 SM |
25160 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25161 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25162 | |
3019eac3 | 25163 | if (cu->dwo_unit) |
43988095 JK |
25164 | { |
25165 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
25166 | ||
25167 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
25168 | } | |
25169 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25170 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25171 | } |
25172 | ||
8cf6f0b1 TT |
25173 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25174 | ||
25175 | static void | |
25176 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25177 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25178 | const struct attribute *attr) |
8cf6f0b1 | 25179 | { |
518817b3 SM |
25180 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25181 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25182 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25183 | ||
25184 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25185 | |
25186 | baton->per_cu = cu->per_cu; | |
25187 | gdb_assert (baton->per_cu); | |
25188 | /* We don't know how long the location list is, but make sure we | |
25189 | don't run off the edge of the section. */ | |
3019eac3 DE |
25190 | baton->size = section->size - DW_UNSND (attr); |
25191 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25192 | baton->base_address = cu->base_address; |
f664829e | 25193 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25194 | } |
25195 | ||
4c2df51b | 25196 | static void |
ff39bb5e | 25197 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25198 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25199 | { |
518817b3 SM |
25200 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25201 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25202 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25203 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25204 | |
3690dd37 | 25205 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25206 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25207 | the section. If so, fall through to the complaint in the |
25208 | other branch. */ | |
3019eac3 | 25209 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25210 | { |
0d53c4c4 | 25211 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25212 | |
8d749320 | 25213 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25214 | |
8cf6f0b1 | 25215 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25216 | |
d00adf39 | 25217 | if (cu->base_known == 0) |
b98664d3 | 25218 | complaint (_("Location list used without " |
3e43a32a | 25219 | "specifying the CU base address.")); |
4c2df51b | 25220 | |
f1e6e072 TT |
25221 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25222 | ? dwarf2_loclist_block_index | |
25223 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25224 | SYMBOL_LOCATION_BATON (sym) = baton; |
25225 | } | |
25226 | else | |
25227 | { | |
25228 | struct dwarf2_locexpr_baton *baton; | |
25229 | ||
8d749320 | 25230 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25231 | baton->per_cu = cu->per_cu; |
25232 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25233 | |
25234 | if (attr_form_is_block (attr)) | |
25235 | { | |
25236 | /* Note that we're just copying the block's data pointer | |
25237 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25238 | info_buffer for SYM's objfile; right now we never release |
25239 | that buffer, but when we do clean up properly this may | |
25240 | need to change. */ | |
0d53c4c4 DJ |
25241 | baton->size = DW_BLOCK (attr)->size; |
25242 | baton->data = DW_BLOCK (attr)->data; | |
25243 | } | |
25244 | else | |
25245 | { | |
25246 | dwarf2_invalid_attrib_class_complaint ("location description", | |
25247 | SYMBOL_NATURAL_NAME (sym)); | |
25248 | baton->size = 0; | |
0d53c4c4 | 25249 | } |
6e70227d | 25250 | |
f1e6e072 TT |
25251 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25252 | ? dwarf2_locexpr_block_index | |
25253 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25254 | SYMBOL_LOCATION_BATON (sym) = baton; |
25255 | } | |
4c2df51b | 25256 | } |
6502dd73 | 25257 | |
9aa1f1e3 TT |
25258 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25259 | came from a separate debuginfo file, then the master objfile is | |
25260 | returned. */ | |
ae0d2f24 UW |
25261 | |
25262 | struct objfile * | |
25263 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25264 | { | |
e3b94546 | 25265 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25266 | |
25267 | /* Return the master objfile, so that we can report and look up the | |
25268 | correct file containing this variable. */ | |
25269 | if (objfile->separate_debug_objfile_backlink) | |
25270 | objfile = objfile->separate_debug_objfile_backlink; | |
25271 | ||
25272 | return objfile; | |
25273 | } | |
25274 | ||
96408a79 SA |
25275 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25276 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25277 | CU_HEADERP first. */ | |
25278 | ||
25279 | static const struct comp_unit_head * | |
25280 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25281 | struct dwarf2_per_cu_data *per_cu) | |
25282 | { | |
d521ce57 | 25283 | const gdb_byte *info_ptr; |
96408a79 SA |
25284 | |
25285 | if (per_cu->cu) | |
25286 | return &per_cu->cu->header; | |
25287 | ||
9c541725 | 25288 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25289 | |
25290 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25291 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25292 | rcuh_kind::COMPILE); | |
96408a79 SA |
25293 | |
25294 | return cu_headerp; | |
25295 | } | |
25296 | ||
ae0d2f24 UW |
25297 | /* Return the address size given in the compilation unit header for CU. */ |
25298 | ||
98714339 | 25299 | int |
ae0d2f24 UW |
25300 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25301 | { | |
96408a79 SA |
25302 | struct comp_unit_head cu_header_local; |
25303 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25304 | |
96408a79 SA |
25305 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25306 | ||
25307 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25308 | } |
25309 | ||
9eae7c52 TT |
25310 | /* Return the offset size given in the compilation unit header for CU. */ |
25311 | ||
25312 | int | |
25313 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25314 | { | |
96408a79 SA |
25315 | struct comp_unit_head cu_header_local; |
25316 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25317 | |
96408a79 SA |
25318 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25319 | ||
25320 | return cu_headerp->offset_size; | |
25321 | } | |
25322 | ||
25323 | /* See its dwarf2loc.h declaration. */ | |
25324 | ||
25325 | int | |
25326 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25327 | { | |
25328 | struct comp_unit_head cu_header_local; | |
25329 | const struct comp_unit_head *cu_headerp; | |
25330 | ||
25331 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25332 | ||
25333 | if (cu_headerp->version == 2) | |
25334 | return cu_headerp->addr_size; | |
25335 | else | |
25336 | return cu_headerp->offset_size; | |
181cebd4 JK |
25337 | } |
25338 | ||
9aa1f1e3 TT |
25339 | /* Return the text offset of the CU. The returned offset comes from |
25340 | this CU's objfile. If this objfile came from a separate debuginfo | |
25341 | file, then the offset may be different from the corresponding | |
25342 | offset in the parent objfile. */ | |
25343 | ||
25344 | CORE_ADDR | |
25345 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25346 | { | |
e3b94546 | 25347 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25348 | |
25349 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25350 | } | |
25351 | ||
9a49df9d AB |
25352 | /* Return a type that is a generic pointer type, the size of which matches |
25353 | the address size given in the compilation unit header for PER_CU. */ | |
25354 | static struct type * | |
25355 | dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu) | |
25356 | { | |
25357 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
25358 | struct type *void_type = objfile_type (objfile)->builtin_void; | |
25359 | struct type *addr_type = lookup_pointer_type (void_type); | |
25360 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
25361 | ||
25362 | if (TYPE_LENGTH (addr_type) == addr_size) | |
25363 | return addr_type; | |
25364 | ||
25365 | addr_type | |
25366 | = dwarf2_per_cu_addr_sized_int_type (per_cu, TYPE_UNSIGNED (addr_type)); | |
25367 | return addr_type; | |
25368 | } | |
25369 | ||
43988095 JK |
25370 | /* Return DWARF version number of PER_CU. */ |
25371 | ||
25372 | short | |
25373 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25374 | { | |
25375 | return per_cu->dwarf_version; | |
25376 | } | |
25377 | ||
348e048f DE |
25378 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25379 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25380 | |
25381 | static struct dwarf2_per_cu_data * | |
9c541725 | 25382 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25383 | unsigned int offset_in_dwz, |
ed2dc618 | 25384 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25385 | { |
25386 | struct dwarf2_per_cu_data *this_cu; | |
25387 | int low, high; | |
25388 | ||
ae038cb0 | 25389 | low = 0; |
b76e467d | 25390 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25391 | while (high > low) |
25392 | { | |
36586728 | 25393 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25394 | int mid = low + (high - low) / 2; |
9a619af0 | 25395 | |
36586728 | 25396 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25397 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25398 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25399 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25400 | high = mid; |
25401 | else | |
25402 | low = mid + 1; | |
25403 | } | |
25404 | gdb_assert (low == high); | |
36586728 | 25405 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25406 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25407 | { |
36586728 | 25408 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25409 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25410 | "offset %s [in module %s]"), |
25411 | sect_offset_str (sect_off), | |
ed2dc618 | 25412 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25413 | |
9c541725 PA |
25414 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25415 | <= sect_off); | |
ae038cb0 DJ |
25416 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25417 | } | |
25418 | else | |
25419 | { | |
b76e467d | 25420 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25421 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25422 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25423 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25424 | return this_cu; |
25425 | } | |
25426 | } | |
25427 | ||
23745b47 | 25428 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25429 | |
fcd3b13d SM |
25430 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25431 | : per_cu (per_cu_), | |
9068261f AB |
25432 | mark (false), |
25433 | has_loclist (false), | |
25434 | checked_producer (false), | |
25435 | producer_is_gxx_lt_4_6 (false), | |
25436 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25437 | producer_is_icc (false), |
9068261f | 25438 | producer_is_icc_lt_14 (false), |
c258c396 | 25439 | producer_is_codewarrior (false), |
9068261f | 25440 | processing_has_namespace_info (false) |
93311388 | 25441 | { |
fcd3b13d SM |
25442 | per_cu->cu = this; |
25443 | } | |
25444 | ||
25445 | /* Destroy a dwarf2_cu. */ | |
25446 | ||
25447 | dwarf2_cu::~dwarf2_cu () | |
25448 | { | |
25449 | per_cu->cu = NULL; | |
9816fde3 JK |
25450 | } |
25451 | ||
25452 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25453 | ||
25454 | static void | |
95554aad TT |
25455 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25456 | enum language pretend_language) | |
9816fde3 JK |
25457 | { |
25458 | struct attribute *attr; | |
25459 | ||
25460 | /* Set the language we're debugging. */ | |
25461 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25462 | if (attr) | |
25463 | set_cu_language (DW_UNSND (attr), cu); | |
25464 | else | |
9cded63f | 25465 | { |
95554aad | 25466 | cu->language = pretend_language; |
9cded63f TT |
25467 | cu->language_defn = language_def (cu->language); |
25468 | } | |
dee91e82 | 25469 | |
7d45c7c3 | 25470 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25471 | } |
25472 | ||
ae038cb0 DJ |
25473 | /* Increase the age counter on each cached compilation unit, and free |
25474 | any that are too old. */ | |
25475 | ||
25476 | static void | |
ed2dc618 | 25477 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25478 | { |
25479 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25480 | ||
25481 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25482 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25483 | while (per_cu != NULL) | |
25484 | { | |
25485 | per_cu->cu->last_used ++; | |
b4f54984 | 25486 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25487 | dwarf2_mark (per_cu->cu); |
25488 | per_cu = per_cu->cu->read_in_chain; | |
25489 | } | |
25490 | ||
25491 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25492 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25493 | while (per_cu != NULL) | |
25494 | { | |
25495 | struct dwarf2_per_cu_data *next_cu; | |
25496 | ||
25497 | next_cu = per_cu->cu->read_in_chain; | |
25498 | ||
25499 | if (!per_cu->cu->mark) | |
25500 | { | |
fcd3b13d | 25501 | delete per_cu->cu; |
ae038cb0 DJ |
25502 | *last_chain = next_cu; |
25503 | } | |
25504 | else | |
25505 | last_chain = &per_cu->cu->read_in_chain; | |
25506 | ||
25507 | per_cu = next_cu; | |
25508 | } | |
25509 | } | |
25510 | ||
25511 | /* Remove a single compilation unit from the cache. */ | |
25512 | ||
25513 | static void | |
dee91e82 | 25514 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25515 | { |
25516 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25517 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25518 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25519 | |
25520 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25521 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25522 | while (per_cu != NULL) | |
25523 | { | |
25524 | struct dwarf2_per_cu_data *next_cu; | |
25525 | ||
25526 | next_cu = per_cu->cu->read_in_chain; | |
25527 | ||
dee91e82 | 25528 | if (per_cu == target_per_cu) |
ae038cb0 | 25529 | { |
fcd3b13d | 25530 | delete per_cu->cu; |
dee91e82 | 25531 | per_cu->cu = NULL; |
ae038cb0 DJ |
25532 | *last_chain = next_cu; |
25533 | break; | |
25534 | } | |
25535 | else | |
25536 | last_chain = &per_cu->cu->read_in_chain; | |
25537 | ||
25538 | per_cu = next_cu; | |
25539 | } | |
25540 | } | |
25541 | ||
dee91e82 DE |
25542 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25543 | We store these in a hash table separate from the DIEs, and preserve them | |
25544 | when the DIEs are flushed out of cache. | |
25545 | ||
25546 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25547 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25548 | or the type may come from a DWO file. Furthermore, while it's more logical |
25549 | to use per_cu->section+offset, with Fission the section with the data is in | |
25550 | the DWO file but we don't know that section at the point we need it. | |
25551 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25552 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25553 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25554 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25555 | |
dee91e82 | 25556 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25557 | { |
dee91e82 | 25558 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25559 | sect_offset sect_off; |
1c379e20 DJ |
25560 | struct type *type; |
25561 | }; | |
25562 | ||
dee91e82 | 25563 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25564 | |
25565 | static hashval_t | |
dee91e82 | 25566 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25567 | { |
9a3c8263 SM |
25568 | const struct dwarf2_per_cu_offset_and_type *ofs |
25569 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25570 | |
9c541725 | 25571 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25572 | } |
25573 | ||
dee91e82 | 25574 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25575 | |
25576 | static int | |
dee91e82 | 25577 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25578 | { |
9a3c8263 SM |
25579 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25580 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25581 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25582 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25583 | |
dee91e82 | 25584 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25585 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25586 | } |
25587 | ||
25588 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25589 | table if necessary. For convenience, return TYPE. |
25590 | ||
25591 | The DIEs reading must have careful ordering to: | |
25592 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25593 | reading current DIE. | |
25594 | * Not trying to dereference contents of still incompletely read in types | |
25595 | while reading in other DIEs. | |
25596 | * Enable referencing still incompletely read in types just by a pointer to | |
25597 | the type without accessing its fields. | |
25598 | ||
25599 | Therefore caller should follow these rules: | |
25600 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25601 | before building the type and calling set_die_type. | |
e71ec853 | 25602 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25603 | possible before fetching more types to complete the current type. |
25604 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25605 | |
f792889a | 25606 | static struct type * |
1c379e20 DJ |
25607 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25608 | { | |
518817b3 SM |
25609 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25610 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25611 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25612 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25613 | struct attribute *attr; |
25614 | struct dynamic_prop prop; | |
1c379e20 | 25615 | |
b4ba55a1 JB |
25616 | /* For Ada types, make sure that the gnat-specific data is always |
25617 | initialized (if not already set). There are a few types where | |
25618 | we should not be doing so, because the type-specific area is | |
25619 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25620 | where the type-specific area is used to store the floatformat). | |
25621 | But this is not a problem, because the gnat-specific information | |
25622 | is actually not needed for these types. */ | |
25623 | if (need_gnat_info (cu) | |
25624 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25625 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25626 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25627 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25628 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25629 | && !HAVE_GNAT_AUX_INFO (type)) |
25630 | INIT_GNAT_SPECIFIC (type); | |
25631 | ||
3f2f83dd KB |
25632 | /* Read DW_AT_allocated and set in type. */ |
25633 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25634 | if (attr_form_is_block (attr)) | |
25635 | { | |
9a49df9d AB |
25636 | struct type *prop_type |
25637 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25638 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25639 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25640 | } |
25641 | else if (attr != NULL) | |
25642 | { | |
b98664d3 | 25643 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25644 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25645 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25646 | } |
25647 | ||
25648 | /* Read DW_AT_associated and set in type. */ | |
25649 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25650 | if (attr_form_is_block (attr)) | |
25651 | { | |
9a49df9d AB |
25652 | struct type *prop_type |
25653 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25654 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25655 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25656 | } |
25657 | else if (attr != NULL) | |
25658 | { | |
b98664d3 | 25659 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25660 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25661 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25662 | } |
25663 | ||
3cdcd0ce JB |
25664 | /* Read DW_AT_data_location and set in type. */ |
25665 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d AB |
25666 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
25667 | dwarf2_per_cu_addr_type (cu->per_cu))) | |
50a82047 | 25668 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25669 | |
dee91e82 | 25670 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25671 | { |
dee91e82 DE |
25672 | dwarf2_per_objfile->die_type_hash = |
25673 | htab_create_alloc_ex (127, | |
25674 | per_cu_offset_and_type_hash, | |
25675 | per_cu_offset_and_type_eq, | |
25676 | NULL, | |
25677 | &objfile->objfile_obstack, | |
25678 | hashtab_obstack_allocate, | |
25679 | dummy_obstack_deallocate); | |
f792889a | 25680 | } |
1c379e20 | 25681 | |
dee91e82 | 25682 | ofs.per_cu = cu->per_cu; |
9c541725 | 25683 | ofs.sect_off = die->sect_off; |
1c379e20 | 25684 | ofs.type = type; |
dee91e82 DE |
25685 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25686 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25687 | if (*slot) |
b98664d3 | 25688 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25689 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25690 | *slot = XOBNEW (&objfile->objfile_obstack, |
25691 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25692 | **slot = ofs; |
f792889a | 25693 | return type; |
1c379e20 DJ |
25694 | } |
25695 | ||
9c541725 | 25696 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25697 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25698 | |
25699 | static struct type * | |
9c541725 | 25700 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25701 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25702 | { |
dee91e82 | 25703 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25704 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25705 | |
dee91e82 | 25706 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25707 | return NULL; |
1c379e20 | 25708 | |
dee91e82 | 25709 | ofs.per_cu = per_cu; |
9c541725 | 25710 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25711 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25712 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25713 | if (slot) |
25714 | return slot->type; | |
25715 | else | |
25716 | return NULL; | |
25717 | } | |
25718 | ||
02142a6c | 25719 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25720 | or return NULL if DIE does not have a saved type. */ |
25721 | ||
25722 | static struct type * | |
25723 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25724 | { | |
9c541725 | 25725 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25726 | } |
25727 | ||
10b3939b DJ |
25728 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25729 | ||
25730 | static void | |
25731 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25732 | struct dwarf2_per_cu_data *ref_per_cu) | |
25733 | { | |
25734 | void **slot; | |
25735 | ||
25736 | if (cu->dependencies == NULL) | |
25737 | cu->dependencies | |
25738 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25739 | NULL, &cu->comp_unit_obstack, | |
25740 | hashtab_obstack_allocate, | |
25741 | dummy_obstack_deallocate); | |
25742 | ||
25743 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25744 | if (*slot == NULL) | |
25745 | *slot = ref_per_cu; | |
25746 | } | |
1c379e20 | 25747 | |
f504f079 DE |
25748 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25749 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25750 | cache that we must keep because we are keeping CU. */ |
25751 | ||
10b3939b DJ |
25752 | static int |
25753 | dwarf2_mark_helper (void **slot, void *data) | |
25754 | { | |
25755 | struct dwarf2_per_cu_data *per_cu; | |
25756 | ||
25757 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25758 | |
25759 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25760 | reading of the chain. As such dependencies remain valid it is not much | |
25761 | useful to track and undo them during QUIT cleanups. */ | |
25762 | if (per_cu->cu == NULL) | |
25763 | return 1; | |
25764 | ||
10b3939b DJ |
25765 | if (per_cu->cu->mark) |
25766 | return 1; | |
9068261f | 25767 | per_cu->cu->mark = true; |
10b3939b DJ |
25768 | |
25769 | if (per_cu->cu->dependencies != NULL) | |
25770 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25771 | ||
25772 | return 1; | |
25773 | } | |
25774 | ||
f504f079 DE |
25775 | /* Set the mark field in CU and in every other compilation unit in the |
25776 | cache that we must keep because we are keeping CU. */ | |
25777 | ||
ae038cb0 DJ |
25778 | static void |
25779 | dwarf2_mark (struct dwarf2_cu *cu) | |
25780 | { | |
25781 | if (cu->mark) | |
25782 | return; | |
9068261f | 25783 | cu->mark = true; |
10b3939b DJ |
25784 | if (cu->dependencies != NULL) |
25785 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25786 | } |
25787 | ||
25788 | static void | |
25789 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25790 | { | |
25791 | while (per_cu) | |
25792 | { | |
9068261f | 25793 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25794 | per_cu = per_cu->cu->read_in_chain; |
25795 | } | |
72bf9492 DJ |
25796 | } |
25797 | ||
72bf9492 DJ |
25798 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25799 | is its offset in .debug_info for this objfile. */ | |
25800 | ||
25801 | static hashval_t | |
25802 | partial_die_hash (const void *item) | |
25803 | { | |
9a3c8263 SM |
25804 | const struct partial_die_info *part_die |
25805 | = (const struct partial_die_info *) item; | |
9a619af0 | 25806 | |
9c541725 | 25807 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25808 | } |
25809 | ||
25810 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25811 | are equal if they have the same offset. */ | |
25812 | ||
25813 | static int | |
25814 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25815 | { | |
9a3c8263 SM |
25816 | const struct partial_die_info *part_die_lhs |
25817 | = (const struct partial_die_info *) item_lhs; | |
25818 | const struct partial_die_info *part_die_rhs | |
25819 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25820 | |
9c541725 | 25821 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25822 | } |
25823 | ||
3c3bb058 AB |
25824 | struct cmd_list_element *set_dwarf_cmdlist; |
25825 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25826 | |
25827 | static void | |
981a3fb3 | 25828 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25829 | { |
b4f54984 | 25830 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25831 | gdb_stdout); |
ae038cb0 DJ |
25832 | } |
25833 | ||
25834 | static void | |
981a3fb3 | 25835 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25836 | { |
b4f54984 | 25837 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25838 | } |
25839 | ||
491144b5 | 25840 | bool dwarf_always_disassemble; |
437afbb8 | 25841 | |
437afbb8 | 25842 | static void |
cd4fb1b2 SM |
25843 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25844 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25845 | { |
cd4fb1b2 SM |
25846 | fprintf_filtered (file, |
25847 | _("Whether to always disassemble " | |
25848 | "DWARF expressions is %s.\n"), | |
25849 | value); | |
9291a0cd TT |
25850 | } |
25851 | ||
9291a0cd | 25852 | static void |
cd4fb1b2 SM |
25853 | show_check_physname (struct ui_file *file, int from_tty, |
25854 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25855 | { |
cd4fb1b2 SM |
25856 | fprintf_filtered (file, |
25857 | _("Whether to check \"physname\" is %s.\n"), | |
25858 | value); | |
9291a0cd TT |
25859 | } |
25860 | ||
cd4fb1b2 SM |
25861 | void |
25862 | _initialize_dwarf2_read (void) | |
9291a0cd | 25863 | { |
cd4fb1b2 SM |
25864 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25865 | Set DWARF specific variables.\n\ | |
590042fc | 25866 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
25867 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25868 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25869 | |
cd4fb1b2 | 25870 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
25871 | Show DWARF specific variables.\n\ |
25872 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
25873 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25874 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25875 | |
cd4fb1b2 SM |
25876 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25877 | &dwarf_max_cache_age, _("\ | |
25878 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25879 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25880 | A higher limit means that cached compilation units will be stored\n\ | |
25881 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25882 | caching, which can slow down startup."), | |
25883 | NULL, | |
25884 | show_dwarf_max_cache_age, | |
25885 | &set_dwarf_cmdlist, | |
25886 | &show_dwarf_cmdlist); | |
156942c7 | 25887 | |
cd4fb1b2 SM |
25888 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25889 | &dwarf_always_disassemble, _("\ | |
25890 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25891 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25892 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25893 | syntax. When disabled, expressions will be printed in a more\n\ | |
25894 | conversational style, when possible."), | |
25895 | NULL, | |
25896 | show_dwarf_always_disassemble, | |
25897 | &set_dwarf_cmdlist, | |
25898 | &show_dwarf_cmdlist); | |
9291a0cd | 25899 | |
cd4fb1b2 SM |
25900 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25901 | Set debugging of the DWARF reader."), _("\ | |
25902 | Show debugging of the DWARF reader."), _("\ | |
25903 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25904 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25905 | information. A value greater than 1 provides more verbose information."), | |
25906 | NULL, | |
25907 | NULL, | |
25908 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25909 | |
cd4fb1b2 SM |
25910 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25911 | Set debugging of the DWARF DIE reader."), _("\ | |
25912 | Show debugging of the DWARF DIE reader."), _("\ | |
25913 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25914 | The value is the maximum depth to print."), | |
25915 | NULL, | |
25916 | NULL, | |
25917 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25918 | |
cd4fb1b2 SM |
25919 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25920 | Set debugging of the dwarf line reader."), _("\ | |
25921 | Show debugging of the dwarf line reader."), _("\ | |
25922 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25923 | A value of 1 (one) provides basic information.\n\ | |
25924 | A value greater than 1 provides more verbose information."), | |
25925 | NULL, | |
25926 | NULL, | |
25927 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25928 | |
cd4fb1b2 SM |
25929 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25930 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25931 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25932 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25933 | the demangler."), | |
25934 | NULL, show_check_physname, | |
25935 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25936 | |
e615022a DE |
25937 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25938 | no_class, &use_deprecated_index_sections, _("\ | |
25939 | Set whether to use deprecated gdb_index sections."), _("\ | |
25940 | Show whether to use deprecated gdb_index sections."), _("\ | |
25941 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25942 | Normally they are ignored either because of a missing feature or\n\ | |
25943 | performance issue.\n\ | |
25944 | Warning: This option must be enabled before gdb reads the file."), | |
25945 | NULL, | |
25946 | NULL, | |
25947 | &setlist, &showlist); | |
25948 | ||
f1e6e072 TT |
25949 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25950 | &dwarf2_locexpr_funcs); | |
25951 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25952 | &dwarf2_loclist_funcs); | |
25953 | ||
25954 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25955 | &dwarf2_block_frame_base_locexpr_funcs); | |
25956 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25957 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25958 | |
25959 | #if GDB_SELF_TEST | |
25960 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25961 | selftests::dw2_expand_symtabs_matching::run_test); | |
25962 | #endif | |
6502dd73 | 25963 | } |