Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
3666a048 | 3 | Copyright (C) 1994-2021 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
c2a62a3d | 43 | #include "dwarf2/sect-names.h" |
2b2558bf | 44 | #include "dwarf2/stringify.h" |
70182375 | 45 | #include "dwarf2/public.h" |
4de283e4 TT |
46 | #include "bfd.h" |
47 | #include "elf-bfd.h" | |
48 | #include "symtab.h" | |
49 | #include "gdbtypes.h" | |
50 | #include "objfiles.h" | |
d55e5aa6 | 51 | #include "dwarf2.h" |
4de283e4 TT |
52 | #include "buildsym.h" |
53 | #include "demangle.h" | |
54 | #include "gdb-demangle.h" | |
4de283e4 | 55 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
56 | #include "language.h" |
57 | #include "complaints.h" | |
82ca8957 TT |
58 | #include "dwarf2/expr.h" |
59 | #include "dwarf2/loc.h" | |
4de283e4 TT |
60 | #include "cp-support.h" |
61 | #include "hashtab.h" | |
62 | #include "command.h" | |
d55e5aa6 | 63 | #include "gdbcmd.h" |
4de283e4 TT |
64 | #include "block.h" |
65 | #include "addrmap.h" | |
66 | #include "typeprint.h" | |
67 | #include "psympriv.h" | |
4de283e4 | 68 | #include "c-lang.h" |
d55e5aa6 | 69 | #include "go-lang.h" |
4de283e4 TT |
70 | #include "valprint.h" |
71 | #include "gdbcore.h" /* for gnutarget */ | |
72 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
73 | #include "gdb_bfd.h" |
74 | #include "f-lang.h" | |
75 | #include "source.h" | |
4de283e4 | 76 | #include "build-id.h" |
d55e5aa6 | 77 | #include "namespace.h" |
268a13a5 TT |
78 | #include "gdbsupport/function-view.h" |
79 | #include "gdbsupport/gdb_optional.h" | |
80 | #include "gdbsupport/underlying.h" | |
268a13a5 | 81 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 82 | #include "filename-seen-cache.h" |
b32b108a | 83 | #include "producer.h" |
4de283e4 | 84 | #include <fcntl.h> |
4de283e4 | 85 | #include <algorithm> |
4de283e4 | 86 | #include <unordered_map> |
268a13a5 | 87 | #include "gdbsupport/selftest.h" |
c9317f21 | 88 | #include "rust-lang.h" |
268a13a5 | 89 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 90 | #include "count-one-bits.h" |
437afbb8 | 91 | |
73be47f5 DE |
92 | /* When == 1, print basic high level tracing messages. |
93 | When > 1, be more verbose. | |
b4f54984 DE |
94 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
95 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 96 | |
6f738b01 SM |
97 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
98 | ||
99 | #define dwarf_read_debug_printf(fmt, ...) \ | |
74b773fc SM |
100 | debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \ |
101 | ##__VA_ARGS__) | |
6f738b01 SM |
102 | |
103 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
104 | ||
105 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
74b773fc SM |
106 | debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \ |
107 | ##__VA_ARGS__) | |
6f738b01 | 108 | |
d97bc12b | 109 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 110 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 111 | |
27e0867f | 112 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 113 | unsigned int dwarf_line_debug = 0; |
27e0867f | 114 | |
491144b5 CB |
115 | /* When true, cross-check physname against demangler. */ |
116 | static bool check_physname = false; | |
900e11f9 | 117 | |
491144b5 CB |
118 | /* When true, do not reject deprecated .gdb_index sections. */ |
119 | static bool use_deprecated_index_sections = false; | |
481860b3 | 120 | |
17ee85fc TT |
121 | /* This is used to store the data that is always per objfile. */ |
122 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
123 | ||
124 | /* These are used to store the dwarf2_per_bfd objects. | |
125 | ||
126 | objfiles having the same BFD, which doesn't require relocations, are going to | |
127 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
128 | ||
129 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
130 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
131 | version. */ | |
132 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
133 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 134 | |
f1e6e072 TT |
135 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
136 | ||
137 | static int dwarf2_locexpr_index; | |
138 | static int dwarf2_loclist_index; | |
139 | static int dwarf2_locexpr_block_index; | |
140 | static int dwarf2_loclist_block_index; | |
141 | ||
41144253 | 142 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
143 | #define LOCLIST_HEADER_SIZE32 12 | |
144 | ||
145 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
146 | #define LOCLIST_HEADER_SIZE64 20 | |
147 | ||
d0ce17d8 CT |
148 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
149 | #define RNGLIST_HEADER_SIZE32 12 | |
150 | ||
151 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
152 | #define RNGLIST_HEADER_SIZE64 20 | |
153 | ||
3f563c84 PA |
154 | /* An index into a (C++) symbol name component in a symbol name as |
155 | recorded in the mapped_index's symbol table. For each C++ symbol | |
156 | in the symbol table, we record one entry for the start of each | |
157 | component in the symbol in a table of name components, and then | |
158 | sort the table, in order to be able to binary search symbol names, | |
159 | ignoring leading namespaces, both completion and regular look up. | |
160 | For example, for symbol "A::B::C", we'll have an entry that points | |
161 | to "A::B::C", another that points to "B::C", and another for "C". | |
162 | Note that function symbols in GDB index have no parameter | |
163 | information, just the function/method names. You can convert a | |
164 | name_component to a "const char *" using the | |
165 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
166 | ||
167 | struct name_component | |
168 | { | |
169 | /* Offset in the symbol name where the component starts. Stored as | |
170 | a (32-bit) offset instead of a pointer to save memory and improve | |
171 | locality on 64-bit architectures. */ | |
172 | offset_type name_offset; | |
173 | ||
174 | /* The symbol's index in the symbol and constant pool tables of a | |
175 | mapped_index. */ | |
176 | offset_type idx; | |
177 | }; | |
178 | ||
44ed8f3e PA |
179 | /* Base class containing bits shared by both .gdb_index and |
180 | .debug_name indexes. */ | |
181 | ||
182 | struct mapped_index_base | |
183 | { | |
22ca247e TT |
184 | mapped_index_base () = default; |
185 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
186 | ||
44ed8f3e PA |
187 | /* The name_component table (a sorted vector). See name_component's |
188 | description above. */ | |
189 | std::vector<name_component> name_components; | |
190 | ||
191 | /* How NAME_COMPONENTS is sorted. */ | |
192 | enum case_sensitivity name_components_casing; | |
193 | ||
194 | /* Return the number of names in the symbol table. */ | |
195 | virtual size_t symbol_name_count () const = 0; | |
196 | ||
197 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
198 | virtual const char *symbol_name_at |
199 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
200 | |
201 | /* Return whether the name at IDX in the symbol table should be | |
202 | ignored. */ | |
203 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
204 | { | |
205 | return false; | |
206 | } | |
207 | ||
208 | /* Build the symbol name component sorted vector, if we haven't | |
209 | yet. */ | |
fcf23d5b | 210 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
211 | |
212 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
213 | possible matches for LN_NO_PARAMS in the name component | |
214 | vector. */ | |
215 | std::pair<std::vector<name_component>::const_iterator, | |
216 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 217 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
218 | enum language lang, |
219 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
220 | |
221 | /* Prevent deleting/destroying via a base class pointer. */ | |
222 | protected: | |
223 | ~mapped_index_base() = default; | |
224 | }; | |
225 | ||
42c2c694 TT |
226 | /* This is a view into the index that converts from bytes to an |
227 | offset_type, and allows indexing. Unaligned bytes are specifically | |
228 | allowed here, and handled via unpacking. */ | |
229 | ||
230 | class offset_view | |
231 | { | |
232 | public: | |
233 | offset_view () = default; | |
234 | ||
235 | explicit offset_view (gdb::array_view<const gdb_byte> bytes) | |
236 | : m_bytes (bytes) | |
237 | { | |
238 | } | |
239 | ||
240 | /* Extract the INDEXth offset_type from the array. */ | |
241 | offset_type operator[] (size_t index) const | |
242 | { | |
243 | const gdb_byte *bytes = &m_bytes[index * sizeof (offset_type)]; | |
244 | return (offset_type) extract_unsigned_integer (bytes, | |
245 | sizeof (offset_type), | |
246 | BFD_ENDIAN_LITTLE); | |
247 | } | |
248 | ||
249 | /* Return the number of offset_types in this array. */ | |
250 | size_t size () const | |
251 | { | |
252 | return m_bytes.size () / sizeof (offset_type); | |
253 | } | |
254 | ||
255 | /* Return true if this view is empty. */ | |
256 | bool empty () const | |
257 | { | |
258 | return m_bytes.empty (); | |
259 | } | |
260 | ||
261 | private: | |
262 | /* The underlying bytes. */ | |
263 | gdb::array_view<const gdb_byte> m_bytes; | |
264 | }; | |
265 | ||
9291a0cd TT |
266 | /* A description of the mapped index. The file format is described in |
267 | a comment by the code that writes the index. */ | |
fc898b42 | 268 | struct mapped_index final : public mapped_index_base |
9291a0cd | 269 | { |
559a7a62 | 270 | /* Index data format version. */ |
3063847f | 271 | int version = 0; |
559a7a62 | 272 | |
f00a2de2 PA |
273 | /* The address table data. */ |
274 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 275 | |
3876f04e | 276 | /* The symbol table, implemented as a hash table. */ |
42c2c694 | 277 | offset_view symbol_table; |
b11b1f88 | 278 | |
9291a0cd | 279 | /* A pointer to the constant pool. */ |
42c2c694 TT |
280 | gdb::array_view<const gdb_byte> constant_pool; |
281 | ||
282 | /* Return the index into the constant pool of the name of the IDXth | |
283 | symbol in the symbol table. */ | |
284 | offset_type symbol_name_index (offset_type idx) const | |
285 | { | |
286 | return symbol_table[2 * idx]; | |
287 | } | |
288 | ||
289 | /* Return the index into the constant pool of the CU vector of the | |
290 | IDXth symbol in the symbol table. */ | |
291 | offset_type symbol_vec_index (offset_type idx) const | |
292 | { | |
293 | return symbol_table[2 * idx + 1]; | |
294 | } | |
3f563c84 | 295 | |
44ed8f3e PA |
296 | bool symbol_name_slot_invalid (offset_type idx) const override |
297 | { | |
42c2c694 TT |
298 | return (symbol_name_index (idx) == 0 |
299 | && symbol_vec_index (idx) == 0); | |
44ed8f3e | 300 | } |
5c58de74 | 301 | |
3f563c84 PA |
302 | /* Convenience method to get at the name of the symbol at IDX in the |
303 | symbol table. */ | |
fcf23d5b SM |
304 | const char *symbol_name_at |
305 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
42c2c694 TT |
306 | { |
307 | return (const char *) (this->constant_pool.data () | |
308 | + symbol_name_index (idx)); | |
309 | } | |
5c58de74 | 310 | |
44ed8f3e | 311 | size_t symbol_name_count () const override |
42c2c694 | 312 | { return this->symbol_table.size () / 2; } |
9291a0cd TT |
313 | }; |
314 | ||
927aa2e7 JK |
315 | /* A description of the mapped .debug_names. |
316 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 317 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
318 | { |
319 | bfd_endian dwarf5_byte_order; | |
320 | bool dwarf5_is_dwarf64; | |
321 | bool augmentation_is_gdb; | |
322 | uint8_t offset_size; | |
323 | uint32_t cu_count = 0; | |
324 | uint32_t tu_count, bucket_count, name_count; | |
325 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
326 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
327 | const gdb_byte *name_table_string_offs_reordered; | |
328 | const gdb_byte *name_table_entry_offs_reordered; | |
329 | const gdb_byte *entry_pool; | |
330 | ||
331 | struct index_val | |
332 | { | |
333 | ULONGEST dwarf_tag; | |
334 | struct attr | |
335 | { | |
336 | /* Attribute name DW_IDX_*. */ | |
337 | ULONGEST dw_idx; | |
338 | ||
339 | /* Attribute form DW_FORM_*. */ | |
340 | ULONGEST form; | |
341 | ||
342 | /* Value if FORM is DW_FORM_implicit_const. */ | |
343 | LONGEST implicit_const; | |
344 | }; | |
345 | std::vector<attr> attr_vec; | |
346 | }; | |
347 | ||
348 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
349 | ||
fcf23d5b SM |
350 | const char *namei_to_name |
351 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
352 | |
353 | /* Implementation of the mapped_index_base virtual interface, for | |
354 | the name_components cache. */ | |
355 | ||
fcf23d5b SM |
356 | const char *symbol_name_at |
357 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
358 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
359 | |
360 | size_t symbol_name_count () const override | |
361 | { return this->name_count; } | |
927aa2e7 JK |
362 | }; |
363 | ||
cd4fb1b2 | 364 | /* See dwarf2read.h. */ |
ed2dc618 | 365 | |
cd4fb1b2 | 366 | dwarf2_per_objfile * |
ed2dc618 SM |
367 | get_dwarf2_per_objfile (struct objfile *objfile) |
368 | { | |
5bfd760d | 369 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 370 | } |
c906108c | 371 | |
251d32d9 | 372 | /* Default names of the debugging sections. */ |
c906108c | 373 | |
233a11ab CS |
374 | /* Note that if the debugging section has been compressed, it might |
375 | have a name like .zdebug_info. */ | |
376 | ||
9938d15a | 377 | const struct dwarf2_debug_sections dwarf2_elf_names = |
9cdd5dbd | 378 | { |
251d32d9 TG |
379 | { ".debug_info", ".zdebug_info" }, |
380 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
381 | { ".debug_line", ".zdebug_line" }, | |
382 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 383 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 384 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 385 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 386 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 387 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 388 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 389 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 390 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 391 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 392 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
393 | { ".debug_frame", ".zdebug_frame" }, |
394 | { ".eh_frame", NULL }, | |
24d3216f | 395 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
396 | { ".debug_names", ".zdebug_names" }, |
397 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 398 | 23 |
251d32d9 | 399 | }; |
c906108c | 400 | |
80626a55 | 401 | /* List of DWO/DWP sections. */ |
3019eac3 | 402 | |
80626a55 | 403 | static const struct dwop_section_names |
3019eac3 DE |
404 | { |
405 | struct dwarf2_section_names abbrev_dwo; | |
406 | struct dwarf2_section_names info_dwo; | |
407 | struct dwarf2_section_names line_dwo; | |
408 | struct dwarf2_section_names loc_dwo; | |
43988095 | 409 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
410 | struct dwarf2_section_names macinfo_dwo; |
411 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 412 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
413 | struct dwarf2_section_names str_dwo; |
414 | struct dwarf2_section_names str_offsets_dwo; | |
415 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
416 | struct dwarf2_section_names cu_index; |
417 | struct dwarf2_section_names tu_index; | |
3019eac3 | 418 | } |
80626a55 | 419 | dwop_section_names = |
3019eac3 DE |
420 | { |
421 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
422 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
423 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
424 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 425 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
426 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
427 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 428 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
429 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
430 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
431 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
432 | { ".debug_cu_index", ".zdebug_cu_index" }, |
433 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
434 | }; |
435 | ||
c906108c SS |
436 | /* local data types */ |
437 | ||
d0ce17d8 CT |
438 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
439 | begin with a header, which contains the following information. */ | |
440 | struct loclists_rnglists_header | |
41144253 | 441 | { |
442 | /* A 4-byte or 12-byte length containing the length of the | |
443 | set of entries for this compilation unit, not including the | |
444 | length field itself. */ | |
445 | unsigned int length; | |
446 | ||
447 | /* A 2-byte version identifier. */ | |
448 | short version; | |
449 | ||
450 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
451 | the target system. */ | |
452 | unsigned char addr_size; | |
453 | ||
454 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
455 | on the target system. */ | |
456 | unsigned char segment_collector_size; | |
457 | ||
458 | /* A 4-byte count of the number of offsets that follow the header. */ | |
459 | unsigned int offset_entry_count; | |
460 | }; | |
461 | ||
3da10d80 KS |
462 | /* Type used for delaying computation of method physnames. |
463 | See comments for compute_delayed_physnames. */ | |
464 | struct delayed_method_info | |
465 | { | |
466 | /* The type to which the method is attached, i.e., its parent class. */ | |
467 | struct type *type; | |
468 | ||
469 | /* The index of the method in the type's function fieldlists. */ | |
470 | int fnfield_index; | |
471 | ||
472 | /* The index of the method in the fieldlist. */ | |
473 | int index; | |
474 | ||
475 | /* The name of the DIE. */ | |
476 | const char *name; | |
477 | ||
478 | /* The DIE associated with this method. */ | |
479 | struct die_info *die; | |
480 | }; | |
481 | ||
e7c27a73 DJ |
482 | /* Internal state when decoding a particular compilation unit. */ |
483 | struct dwarf2_cu | |
484 | { | |
9e021579 SM |
485 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
486 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
487 | |
488 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
489 | ||
c24bdb02 KS |
490 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
491 | Create the set of symtabs used by this TU, or if this TU is sharing | |
492 | symtabs with another TU and the symtabs have already been created | |
493 | then restore those symtabs in the line header. | |
494 | We don't need the pc/line-number mapping for type units. */ | |
495 | void setup_type_unit_groups (struct die_info *die); | |
496 | ||
497 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
498 | buildsym_compunit constructor. */ | |
499 | struct compunit_symtab *start_symtab (const char *name, | |
500 | const char *comp_dir, | |
501 | CORE_ADDR low_pc); | |
502 | ||
503 | /* Reset the builder. */ | |
504 | void reset_builder () { m_builder.reset (); } | |
505 | ||
293e7e51 SM |
506 | /* Return a type that is a generic pointer type, the size of which |
507 | matches the address size given in the compilation unit header for | |
508 | this CU. */ | |
509 | struct type *addr_type () const; | |
510 | ||
511 | /* Find an integer type the same size as the address size given in | |
512 | the compilation unit header for this CU. UNSIGNED_P controls if | |
513 | the integer is unsigned or not. */ | |
514 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
515 | ||
d00adf39 | 516 | /* The header of the compilation unit. */ |
fcd3b13d | 517 | struct comp_unit_head header {}; |
e142c38c | 518 | |
d00adf39 | 519 | /* Base address of this compilation unit. */ |
2b24b6e4 | 520 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 521 | |
e142c38c | 522 | /* The language we are debugging. */ |
fcd3b13d SM |
523 | enum language language = language_unknown; |
524 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 525 | |
fcd3b13d | 526 | const char *producer = nullptr; |
b0f35d58 | 527 | |
c24bdb02 | 528 | private: |
804d2729 TT |
529 | /* The symtab builder for this CU. This is only non-NULL when full |
530 | symbols are being read. */ | |
c24bdb02 | 531 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 532 | |
c24bdb02 | 533 | public: |
e142c38c DJ |
534 | /* The generic symbol table building routines have separate lists for |
535 | file scope symbols and all all other scopes (local scopes). So | |
536 | we need to select the right one to pass to add_symbol_to_list(). | |
537 | We do it by keeping a pointer to the correct list in list_in_scope. | |
538 | ||
539 | FIXME: The original dwarf code just treated the file scope as the | |
540 | first local scope, and all other local scopes as nested local | |
541 | scopes, and worked fine. Check to see if we really need to | |
542 | distinguish these in buildsym.c. */ | |
fcd3b13d | 543 | struct pending **list_in_scope = nullptr; |
e142c38c | 544 | |
b64f50a1 JK |
545 | /* Hash table holding all the loaded partial DIEs |
546 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 547 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
548 | |
549 | /* Storage for things with the same lifetime as this read-in compilation | |
550 | unit, including partial DIEs. */ | |
fcd3b13d | 551 | auto_obstack comp_unit_obstack; |
72bf9492 | 552 | |
69d751e3 | 553 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
554 | struct dwarf2_per_cu_data *per_cu; |
555 | ||
9e021579 | 556 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 557 | dwarf2_per_objfile *per_objfile; |
9e021579 | 558 | |
ae038cb0 | 559 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 560 | int last_used = 0; |
ae038cb0 | 561 | |
b64f50a1 JK |
562 | /* A hash table of DIE cu_offset for following references with |
563 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 564 | htab_t die_hash = nullptr; |
10b3939b DJ |
565 | |
566 | /* Full DIEs if read in. */ | |
fcd3b13d | 567 | struct die_info *dies = nullptr; |
10b3939b DJ |
568 | |
569 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
570 | units referenced by this one. Only set during full symbol processing; | |
571 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 572 | htab_t dependencies = nullptr; |
10b3939b | 573 | |
cb1df416 | 574 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 575 | struct line_header *line_header = nullptr; |
4c8aa72d | 576 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 577 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
578 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
579 | to the line header as long as this DIE is being processed. See | |
580 | process_die_scope. */ | |
fcd3b13d | 581 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 582 | |
3da10d80 KS |
583 | /* A list of methods which need to have physnames computed |
584 | after all type information has been read. */ | |
c89b44cd | 585 | std::vector<delayed_method_info> method_list; |
3da10d80 | 586 | |
96408a79 | 587 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 588 | htab_t call_site_htab = nullptr; |
96408a79 | 589 | |
034e5797 DE |
590 | /* Non-NULL if this CU came from a DWO file. |
591 | There is an invariant here that is important to remember: | |
592 | Except for attributes copied from the top level DIE in the "main" | |
593 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 594 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
595 | Either there isn't a DWO file (in which case this is NULL and the point |
596 | is moot), or there is and either we're not going to read it (in which | |
597 | case this is NULL) or there is and we are reading it (in which case this | |
598 | is non-NULL). */ | |
fcd3b13d | 599 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 600 | |
18a8505e | 601 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 602 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 603 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 604 | |
2b0c7f41 SM |
605 | /* The DW_AT_GNU_ranges_base attribute, if present. |
606 | ||
607 | This is only relevant in the context of pre-DWARF 5 split units. In this | |
608 | context, there is a .debug_ranges section in the linked executable, | |
609 | containing all the ranges data for all the compilation units. Each | |
610 | skeleton/stub unit has (if needed) a DW_AT_GNU_ranges_base attribute that | |
611 | indicates the base of its contribution to that section. The DW_AT_ranges | |
612 | attributes in the split-unit are of the form DW_FORM_sec_offset and point | |
613 | into the .debug_ranges section of the linked file. However, they are not | |
614 | "true" DW_FORM_sec_offset, because they are relative to the base of their | |
615 | compilation unit's contribution, rather than relative to the beginning of | |
616 | the section. The DW_AT_GNU_ranges_base value must be added to it to make | |
617 | it relative to the beginning of the section. | |
618 | ||
619 | Note that the value is zero when we are not in a pre-DWARF 5 split-unit | |
620 | case, so this value can be added without needing to know whether we are in | |
621 | this case or not. | |
622 | ||
623 | N.B. If a DW_AT_ranges attribute is found on the DW_TAG_compile_unit in the | |
624 | skeleton/stub, it must not have the base added, as it already points to the | |
625 | right place. And since the DW_TAG_compile_unit DIE in the split-unit can't | |
626 | have a DW_AT_ranges attribute, we can use the | |
627 | ||
628 | die->tag != DW_AT_compile_unit | |
629 | ||
630 | to determine whether the base should be added or not. */ | |
631 | ULONGEST gnu_ranges_base = 0; | |
632 | ||
633 | /* The DW_AT_rnglists_base attribute, if present. | |
634 | ||
635 | This is used when processing attributes of form DW_FORM_rnglistx in | |
636 | non-split units. Attributes of this form found in a split unit don't | |
637 | use it, as split-unit files have their own non-shared .debug_rnglists.dwo | |
638 | section. */ | |
639 | ULONGEST rnglists_base = 0; | |
2e3cf129 | 640 | |
41144253 | 641 | /* The DW_AT_loclists_base attribute if present. */ |
642 | ULONGEST loclist_base = 0; | |
643 | ||
c9317f21 TT |
644 | /* When reading debug info generated by older versions of rustc, we |
645 | have to rewrite some union types to be struct types with a | |
646 | variant part. This rewriting must be done after the CU is fully | |
647 | read in, because otherwise at the point of rewriting some struct | |
648 | type might not have been fully processed. So, we keep a list of | |
649 | all such types here and process them after expansion. */ | |
650 | std::vector<struct type *> rust_unions; | |
651 | ||
18a8505e AT |
652 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
653 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
654 | value is often implicit and is the size of the header of | |
655 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
656 | gdb::optional<ULONGEST> str_offsets_base; | |
657 | ||
ae038cb0 | 658 | /* Mark used when releasing cached dies. */ |
9068261f | 659 | bool mark : 1; |
ae038cb0 | 660 | |
8be455d7 JK |
661 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
662 | This test is imperfect as there may exist optimized debug code not using | |
663 | any location list and still facing inlining issues if handled as | |
664 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 665 | bool has_loclist : 1; |
ba919b58 | 666 | |
9068261f | 667 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
668 | if all the producer_is_* fields are valid. This information is cached |
669 | because profiling CU expansion showed excessive time spent in | |
670 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
671 | bool checked_producer : 1; |
672 | bool producer_is_gxx_lt_4_6 : 1; | |
673 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 674 | bool producer_is_icc : 1; |
9068261f | 675 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 676 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 677 | |
9068261f | 678 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
679 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
680 | this information, but later versions do. */ | |
681 | ||
9068261f | 682 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
683 | |
684 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
685 | |
686 | /* If this CU was inherited by another CU (via specification, | |
687 | abstract_origin, etc), this is the ancestor CU. */ | |
688 | dwarf2_cu *ancestor; | |
689 | ||
690 | /* Get the buildsym_compunit for this CU. */ | |
691 | buildsym_compunit *get_builder () | |
692 | { | |
693 | /* If this CU has a builder associated with it, use that. */ | |
694 | if (m_builder != nullptr) | |
695 | return m_builder.get (); | |
696 | ||
697 | /* Otherwise, search ancestors for a valid builder. */ | |
698 | if (ancestor != nullptr) | |
699 | return ancestor->get_builder (); | |
700 | ||
701 | return nullptr; | |
702 | } | |
e7c27a73 DJ |
703 | }; |
704 | ||
094b34ac DE |
705 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
706 | This includes type_unit_group and quick_file_names. */ | |
707 | ||
708 | struct stmt_list_hash | |
709 | { | |
710 | /* The DWO unit this table is from or NULL if there is none. */ | |
711 | struct dwo_unit *dwo_unit; | |
712 | ||
713 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 714 | sect_offset line_sect_off; |
094b34ac DE |
715 | }; |
716 | ||
5989a64e | 717 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
718 | an object of this type. This contains elements of type unit groups |
719 | that can be shared across objfiles. The non-shareable parts are in | |
720 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
721 | |
722 | struct type_unit_group | |
723 | { | |
0186c6a7 | 724 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
725 | To simplify things we create an artificial CU that "includes" all the |
726 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 727 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
728 | struct dwarf2_per_cu_data per_cu; |
729 | ||
0186c6a7 DE |
730 | /* The TUs that share this DW_AT_stmt_list entry. |
731 | This is added to while parsing type units to build partial symtabs, | |
732 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 733 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 734 | |
094b34ac DE |
735 | /* The data used to construct the hash key. */ |
736 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
737 | }; |
738 | ||
73869dc2 | 739 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
740 | |
741 | struct dwo_sections | |
742 | { | |
743 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
744 | struct dwarf2_section_info line; |
745 | struct dwarf2_section_info loc; | |
43988095 | 746 | struct dwarf2_section_info loclists; |
09262596 DE |
747 | struct dwarf2_section_info macinfo; |
748 | struct dwarf2_section_info macro; | |
d0ce17d8 | 749 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
750 | struct dwarf2_section_info str; |
751 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
752 | /* In the case of a virtual DWO file, these two are unused. */ |
753 | struct dwarf2_section_info info; | |
fd5866f6 | 754 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
755 | }; |
756 | ||
c88ee1f0 | 757 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
758 | |
759 | struct dwo_unit | |
760 | { | |
761 | /* Backlink to the containing struct dwo_file. */ | |
762 | struct dwo_file *dwo_file; | |
763 | ||
764 | /* The "id" that distinguishes this CU/TU. | |
765 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
766 | Since signatures came first, we stick with it for consistency. */ | |
767 | ULONGEST signature; | |
768 | ||
769 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 770 | struct dwarf2_section_info *section; |
3019eac3 | 771 | |
9c541725 PA |
772 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
773 | sect_offset sect_off; | |
3019eac3 DE |
774 | unsigned int length; |
775 | ||
776 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
777 | cu_offset type_offset_in_tu; | |
778 | }; | |
779 | ||
73869dc2 DE |
780 | /* include/dwarf2.h defines the DWP section codes. |
781 | It defines a max value but it doesn't define a min value, which we | |
782 | use for error checking, so provide one. */ | |
783 | ||
784 | enum dwp_v2_section_ids | |
785 | { | |
786 | DW_SECT_MIN = 1 | |
787 | }; | |
788 | ||
80626a55 | 789 | /* Data for one DWO file. |
57d63ce2 DE |
790 | |
791 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
792 | appears in a DWP file). DWP files don't really have DWO files per se - | |
793 | comdat folding of types "loses" the DWO file they came from, and from | |
794 | a high level view DWP files appear to contain a mass of random types. | |
795 | However, to maintain consistency with the non-DWP case we pretend DWP | |
796 | files contain virtual DWO files, and we assign each TU with one virtual | |
797 | DWO file (generally based on the line and abbrev section offsets - | |
798 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
799 | |
800 | struct dwo_file | |
801 | { | |
51ac9db5 SM |
802 | dwo_file () = default; |
803 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
804 | ||
18a8505e | 805 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
806 | For virtual DWO files the name is constructed from the section offsets |
807 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
808 | from related CU+TUs. */ | |
51ac9db5 | 809 | const char *dwo_name = nullptr; |
0ac5b59e DE |
810 | |
811 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 812 | const char *comp_dir = nullptr; |
3019eac3 | 813 | |
80626a55 DE |
814 | /* The bfd, when the file is open. Otherwise this is NULL. |
815 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 816 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 817 | |
73869dc2 | 818 | /* The sections that make up this DWO file. |
d2854d8d | 819 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 820 | sections (for lack of a better name). */ |
51ac9db5 | 821 | struct dwo_sections sections {}; |
3019eac3 | 822 | |
33c5cd75 DB |
823 | /* The CUs in the file. |
824 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
825 | an extension to handle LLVM's Link Time Optimization output (where | |
826 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 827 | htab_up cus; |
3019eac3 DE |
828 | |
829 | /* Table of TUs in the file. | |
830 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 831 | htab_up tus; |
3019eac3 DE |
832 | }; |
833 | ||
80626a55 DE |
834 | /* These sections are what may appear in a DWP file. */ |
835 | ||
836 | struct dwp_sections | |
837 | { | |
d2854d8d | 838 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
839 | struct dwarf2_section_info str; |
840 | struct dwarf2_section_info cu_index; | |
841 | struct dwarf2_section_info tu_index; | |
73869dc2 | 842 | |
d2854d8d | 843 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
844 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
845 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
846 | In DWP version 2 or 5 there is at most one copy of all these sections, |
847 | each section being (effectively) comprised of the concatenation of all of | |
848 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
849 | To keep the code simple we treat each of these concatenated pieces as a |
850 | section itself (a virtual section?). */ | |
851 | struct dwarf2_section_info abbrev; | |
852 | struct dwarf2_section_info info; | |
853 | struct dwarf2_section_info line; | |
854 | struct dwarf2_section_info loc; | |
d2854d8d | 855 | struct dwarf2_section_info loclists; |
73869dc2 DE |
856 | struct dwarf2_section_info macinfo; |
857 | struct dwarf2_section_info macro; | |
d2854d8d | 858 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
859 | struct dwarf2_section_info str_offsets; |
860 | struct dwarf2_section_info types; | |
80626a55 DE |
861 | }; |
862 | ||
73869dc2 DE |
863 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
864 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 865 | |
73869dc2 | 866 | struct virtual_v1_dwo_sections |
80626a55 DE |
867 | { |
868 | struct dwarf2_section_info abbrev; | |
869 | struct dwarf2_section_info line; | |
870 | struct dwarf2_section_info loc; | |
871 | struct dwarf2_section_info macinfo; | |
872 | struct dwarf2_section_info macro; | |
873 | struct dwarf2_section_info str_offsets; | |
874 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 875 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
876 | struct dwarf2_section_info info_or_types; |
877 | }; | |
878 | ||
d2854d8d | 879 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
880 | In version 2, the sections of the DWO files are concatenated together |
881 | and stored in one section of that name. Thus each ELF section contains | |
882 | several "virtual" sections. */ | |
883 | ||
d2854d8d | 884 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
885 | { |
886 | bfd_size_type abbrev_offset; | |
887 | bfd_size_type abbrev_size; | |
888 | ||
889 | bfd_size_type line_offset; | |
890 | bfd_size_type line_size; | |
891 | ||
892 | bfd_size_type loc_offset; | |
893 | bfd_size_type loc_size; | |
894 | ||
d2854d8d CT |
895 | bfd_size_type loclists_offset; |
896 | bfd_size_type loclists_size; | |
897 | ||
73869dc2 DE |
898 | bfd_size_type macinfo_offset; |
899 | bfd_size_type macinfo_size; | |
900 | ||
901 | bfd_size_type macro_offset; | |
902 | bfd_size_type macro_size; | |
903 | ||
d2854d8d CT |
904 | bfd_size_type rnglists_offset; |
905 | bfd_size_type rnglists_size; | |
906 | ||
73869dc2 DE |
907 | bfd_size_type str_offsets_offset; |
908 | bfd_size_type str_offsets_size; | |
909 | ||
910 | /* Each DWP hash table entry records one CU or one TU. | |
911 | That is recorded here, and copied to dwo_unit.section. */ | |
912 | bfd_size_type info_or_types_offset; | |
913 | bfd_size_type info_or_types_size; | |
914 | }; | |
915 | ||
80626a55 DE |
916 | /* Contents of DWP hash tables. */ |
917 | ||
918 | struct dwp_hash_table | |
919 | { | |
73869dc2 | 920 | uint32_t version, nr_columns; |
80626a55 | 921 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
922 | const gdb_byte *hash_table, *unit_table; |
923 | union | |
924 | { | |
925 | struct | |
926 | { | |
927 | const gdb_byte *indices; | |
928 | } v1; | |
929 | struct | |
930 | { | |
931 | /* This is indexed by column number and gives the id of the section | |
932 | in that column. */ | |
933 | #define MAX_NR_V2_DWO_SECTIONS \ | |
934 | (1 /* .debug_info or .debug_types */ \ | |
935 | + 1 /* .debug_abbrev */ \ | |
936 | + 1 /* .debug_line */ \ | |
937 | + 1 /* .debug_loc */ \ | |
938 | + 1 /* .debug_str_offsets */ \ | |
939 | + 1 /* .debug_macro or .debug_macinfo */) | |
940 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
941 | const gdb_byte *offsets; | |
942 | const gdb_byte *sizes; | |
943 | } v2; | |
d2854d8d CT |
944 | struct |
945 | { | |
946 | /* This is indexed by column number and gives the id of the section | |
947 | in that column. */ | |
948 | #define MAX_NR_V5_DWO_SECTIONS \ | |
949 | (1 /* .debug_info */ \ | |
950 | + 1 /* .debug_abbrev */ \ | |
951 | + 1 /* .debug_line */ \ | |
952 | + 1 /* .debug_loclists */ \ | |
953 | + 1 /* .debug_str_offsets */ \ | |
954 | + 1 /* .debug_macro */ \ | |
955 | + 1 /* .debug_rnglists */) | |
956 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
957 | const gdb_byte *offsets; | |
958 | const gdb_byte *sizes; | |
959 | } v5; | |
73869dc2 | 960 | } section_pool; |
80626a55 DE |
961 | }; |
962 | ||
963 | /* Data for one DWP file. */ | |
964 | ||
965 | struct dwp_file | |
966 | { | |
400174b1 TT |
967 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
968 | : name (name_), | |
969 | dbfd (std::move (abfd)) | |
970 | { | |
971 | } | |
972 | ||
80626a55 DE |
973 | /* Name of the file. */ |
974 | const char *name; | |
975 | ||
73869dc2 | 976 | /* File format version. */ |
400174b1 | 977 | int version = 0; |
73869dc2 | 978 | |
93417882 | 979 | /* The bfd. */ |
400174b1 | 980 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
981 | |
982 | /* Section info for this file. */ | |
400174b1 | 983 | struct dwp_sections sections {}; |
80626a55 | 984 | |
57d63ce2 | 985 | /* Table of CUs in the file. */ |
400174b1 | 986 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
987 | |
988 | /* Table of TUs in the file. */ | |
400174b1 | 989 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 990 | |
19ac8c2e | 991 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
992 | htab_up loaded_cus; |
993 | htab_up loaded_tus; | |
80626a55 | 994 | |
73869dc2 DE |
995 | /* Table to map ELF section numbers to their sections. |
996 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
997 | unsigned int num_sections = 0; |
998 | asection **elf_sections = nullptr; | |
80626a55 DE |
999 | }; |
1000 | ||
0963b4bd MS |
1001 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1002 | al. which are used for both .debug_info and .debug_types dies. | |
1003 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1004 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1005 | |
1006 | struct die_reader_specs | |
1007 | { | |
a32a8923 | 1008 | /* The bfd of die_section. */ |
0280fdcc | 1009 | bfd *abfd; |
93311388 DE |
1010 | |
1011 | /* The CU of the DIE we are parsing. */ | |
1012 | struct dwarf2_cu *cu; | |
1013 | ||
80626a55 | 1014 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1015 | struct dwo_file *dwo_file; |
1016 | ||
dee91e82 | 1017 | /* The section the die comes from. |
3019eac3 | 1018 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1019 | struct dwarf2_section_info *die_section; |
1020 | ||
1021 | /* die_section->buffer. */ | |
d521ce57 | 1022 | const gdb_byte *buffer; |
f664829e DE |
1023 | |
1024 | /* The end of the buffer. */ | |
1025 | const gdb_byte *buffer_end; | |
a2ce51a0 | 1026 | |
685af9cd TT |
1027 | /* The abbreviation table to use when reading the DIEs. */ |
1028 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1029 | }; |
1030 | ||
c0ab21c2 TT |
1031 | /* A subclass of die_reader_specs that holds storage and has complex |
1032 | constructor and destructor behavior. */ | |
1033 | ||
1034 | class cutu_reader : public die_reader_specs | |
1035 | { | |
1036 | public: | |
1037 | ||
ab432490 SM |
1038 | cutu_reader (dwarf2_per_cu_data *this_cu, |
1039 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 1040 | struct abbrev_table *abbrev_table, |
2e671100 | 1041 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
1042 | bool skip_partial); |
1043 | ||
1044 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 1045 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
1046 | struct dwarf2_cu *parent_cu = nullptr, |
1047 | struct dwo_file *dwo_file = nullptr); | |
1048 | ||
c0ab21c2 TT |
1049 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
1050 | ||
1051 | const gdb_byte *info_ptr = nullptr; | |
1052 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1053 | bool dummy_p = false; |
1054 | ||
6751ebae TT |
1055 | /* Release the new CU, putting it on the chain. This cannot be done |
1056 | for dummy CUs. */ | |
1057 | void keep (); | |
1058 | ||
c0ab21c2 | 1059 | private: |
9e021579 SM |
1060 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1061 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1062 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1063 | |
1064 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1065 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1066 | ||
1067 | /* The ordinary abbreviation table. */ | |
1068 | abbrev_table_up m_abbrev_table_holder; | |
1069 | ||
1070 | /* The DWO abbreviation table. */ | |
1071 | abbrev_table_up m_dwo_abbrev_table; | |
1072 | }; | |
dee91e82 | 1073 | |
c906108c | 1074 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1075 | need this much information. */ |
6f06d47b | 1076 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1077 | { |
7c32eebb | 1078 | partial_die_info (sect_offset sect_off, const struct abbrev_info *abbrev); |
6f06d47b YQ |
1079 | |
1080 | /* Disable assign but still keep copy ctor, which is needed | |
1081 | load_partial_dies. */ | |
1082 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1083 | ||
52356b79 YQ |
1084 | /* Adjust the partial die before generating a symbol for it. This |
1085 | function may set the is_external flag or change the DIE's | |
1086 | name. */ | |
1087 | void fixup (struct dwarf2_cu *cu); | |
1088 | ||
48fbe735 YQ |
1089 | /* Read a minimal amount of information into the minimal die |
1090 | structure. */ | |
1091 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1092 | const struct abbrev_info &abbrev, | |
1093 | const gdb_byte *info_ptr); | |
1094 | ||
7d00ffec TT |
1095 | /* Compute the name of this partial DIE. This memoizes the |
1096 | result, so it is safe to call multiple times. */ | |
1097 | const char *name (dwarf2_cu *cu); | |
1098 | ||
72bf9492 | 1099 | /* Offset of this DIE. */ |
6f06d47b | 1100 | const sect_offset sect_off; |
72bf9492 DJ |
1101 | |
1102 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1103 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1104 | |
72bf9492 | 1105 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1106 | const unsigned int has_children : 1; |
1107 | ||
72bf9492 DJ |
1108 | unsigned int is_external : 1; |
1109 | unsigned int is_declaration : 1; | |
1110 | unsigned int has_type : 1; | |
1111 | unsigned int has_specification : 1; | |
1112 | unsigned int has_pc_info : 1; | |
481860b3 | 1113 | unsigned int may_be_inlined : 1; |
72bf9492 | 1114 | |
0c1b455e TT |
1115 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1116 | unsigned int main_subprogram : 1; | |
1117 | ||
72bf9492 DJ |
1118 | /* Flag set if the SCOPE field of this structure has been |
1119 | computed. */ | |
1120 | unsigned int scope_set : 1; | |
1121 | ||
fa4028e9 JB |
1122 | /* Flag set if the DIE has a byte_size attribute. */ |
1123 | unsigned int has_byte_size : 1; | |
1124 | ||
ff908ebf AW |
1125 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1126 | unsigned int has_const_value : 1; | |
1127 | ||
98bfdba5 PA |
1128 | /* Flag set if any of the DIE's children are template arguments. */ |
1129 | unsigned int has_template_arguments : 1; | |
1130 | ||
52356b79 | 1131 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1132 | unsigned int fixup_called : 1; |
1133 | ||
36586728 TT |
1134 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1135 | unsigned int is_dwz : 1; | |
1136 | ||
1137 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1138 | unsigned int spec_is_dwz : 1; | |
1139 | ||
7d00ffec TT |
1140 | unsigned int canonical_name : 1; |
1141 | ||
72bf9492 | 1142 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1143 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1144 | const char *raw_name = nullptr; |
72bf9492 | 1145 | |
abc72ce4 | 1146 | /* The linkage name, if present. */ |
6f06d47b | 1147 | const char *linkage_name = nullptr; |
abc72ce4 | 1148 | |
72bf9492 DJ |
1149 | /* The scope to prepend to our children. This is generally |
1150 | allocated on the comp_unit_obstack, so will disappear | |
1151 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1152 | const char *scope = nullptr; |
72bf9492 | 1153 | |
95554aad TT |
1154 | /* Some data associated with the partial DIE. The tag determines |
1155 | which field is live. */ | |
1156 | union | |
1157 | { | |
1158 | /* The location description associated with this DIE, if any. */ | |
1159 | struct dwarf_block *locdesc; | |
1160 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1161 | sect_offset sect_off; |
6f06d47b | 1162 | } d {}; |
72bf9492 DJ |
1163 | |
1164 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1165 | CORE_ADDR lowpc = 0; |
1166 | CORE_ADDR highpc = 0; | |
72bf9492 | 1167 | |
93311388 | 1168 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1169 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1170 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1171 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1172 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1173 | |
1174 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1175 | DW_AT_specification (or DW_AT_abstract_origin or | |
1176 | DW_AT_extension). */ | |
6f06d47b | 1177 | sect_offset spec_offset {}; |
72bf9492 DJ |
1178 | |
1179 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1180 | if any. */ | |
6f06d47b YQ |
1181 | struct partial_die_info *die_parent = nullptr; |
1182 | struct partial_die_info *die_child = nullptr; | |
1183 | struct partial_die_info *die_sibling = nullptr; | |
1184 | ||
1185 | friend struct partial_die_info * | |
1186 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1187 | ||
1188 | private: | |
1189 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1190 | partial_die_info (sect_offset sect_off) | |
1191 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1192 | { | |
1193 | } | |
1194 | ||
1195 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1196 | int has_children_) | |
1197 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1198 | { | |
1199 | is_external = 0; | |
1200 | is_declaration = 0; | |
1201 | has_type = 0; | |
1202 | has_specification = 0; | |
1203 | has_pc_info = 0; | |
1204 | may_be_inlined = 0; | |
1205 | main_subprogram = 0; | |
1206 | scope_set = 0; | |
1207 | has_byte_size = 0; | |
1208 | has_const_value = 0; | |
1209 | has_template_arguments = 0; | |
1210 | fixup_called = 0; | |
1211 | is_dwz = 0; | |
1212 | spec_is_dwz = 0; | |
7d00ffec | 1213 | canonical_name = 0; |
6f06d47b | 1214 | } |
c906108c SS |
1215 | }; |
1216 | ||
c906108c SS |
1217 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1218 | but this would require a corresponding change in unpack_field_as_long | |
1219 | and friends. */ | |
1220 | static int bits_per_byte = 8; | |
1221 | ||
9c6a1327 TT |
1222 | struct variant_part_builder; |
1223 | ||
1224 | /* When reading a variant, we track a bit more information about the | |
1225 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1226 | |
1227 | struct variant_field | |
1228 | { | |
9c6a1327 TT |
1229 | int first_field = -1; |
1230 | int last_field = -1; | |
1231 | ||
1232 | /* A variant can contain other variant parts. */ | |
1233 | std::vector<variant_part_builder> variant_parts; | |
1234 | ||
2ddeaf8a TT |
1235 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1236 | default branch. */ | |
9c6a1327 TT |
1237 | bool default_branch = false; |
1238 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1239 | value. */ | |
1240 | ULONGEST discriminant_value = 0; | |
1241 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1242 | data. */ | |
1243 | struct dwarf_block *discr_list_data = nullptr; | |
1244 | }; | |
1245 | ||
1246 | /* This represents a DW_TAG_variant_part. */ | |
1247 | ||
1248 | struct variant_part_builder | |
1249 | { | |
1250 | /* The offset of the discriminant field. */ | |
1251 | sect_offset discriminant_offset {}; | |
1252 | ||
1253 | /* Variants that are direct children of this variant part. */ | |
1254 | std::vector<variant_field> variants; | |
1255 | ||
1256 | /* True if we're currently reading a variant. */ | |
1257 | bool processing_variant = false; | |
2ddeaf8a TT |
1258 | }; |
1259 | ||
52059ffd TT |
1260 | struct nextfield |
1261 | { | |
be2daae6 TT |
1262 | int accessibility = 0; |
1263 | int virtuality = 0; | |
9c6a1327 TT |
1264 | /* Variant parts need to find the discriminant, which is a DIE |
1265 | reference. We track the section offset of each field to make | |
1266 | this link. */ | |
1267 | sect_offset offset; | |
be2daae6 | 1268 | struct field field {}; |
52059ffd TT |
1269 | }; |
1270 | ||
1271 | struct fnfieldlist | |
1272 | { | |
be2daae6 TT |
1273 | const char *name = nullptr; |
1274 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1275 | }; |
1276 | ||
c906108c SS |
1277 | /* The routines that read and process dies for a C struct or C++ class |
1278 | pass lists of data member fields and lists of member function fields | |
1279 | in an instance of a field_info structure, as defined below. */ | |
1280 | struct field_info | |
2de01bdb SM |
1281 | { |
1282 | /* List of data member and baseclasses fields. */ | |
1283 | std::vector<struct nextfield> fields; | |
1284 | std::vector<struct nextfield> baseclasses; | |
1285 | ||
1286 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1287 | bool non_public_fields = false; |
2de01bdb SM |
1288 | |
1289 | /* Member function fieldlist array, contains name of possibly overloaded | |
1290 | member function, number of overloaded member functions and a pointer | |
1291 | to the head of the member function field chain. */ | |
1292 | std::vector<struct fnfieldlist> fnfieldlists; | |
1293 | ||
1294 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1295 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1296 | std::vector<struct decl_field> typedef_field_list; | |
1297 | ||
1298 | /* Nested types defined by this class and the number of elements in this | |
1299 | list. */ | |
1300 | std::vector<struct decl_field> nested_types_list; | |
1301 | ||
1302 | /* If non-null, this is the variant part we are currently | |
1303 | reading. */ | |
1304 | variant_part_builder *current_variant_part = nullptr; | |
1305 | /* This holds all the top-level variant parts attached to the type | |
1306 | we're reading. */ | |
1307 | std::vector<variant_part_builder> variant_parts; | |
1308 | ||
1309 | /* Return the total number of fields (including baseclasses). */ | |
1310 | int nfields () const | |
c5aa993b | 1311 | { |
2de01bdb SM |
1312 | return fields.size () + baseclasses.size (); |
1313 | } | |
1314 | }; | |
c906108c | 1315 | |
ae038cb0 DJ |
1316 | /* Loaded secondary compilation units are kept in memory until they |
1317 | have not been referenced for the processing of this many | |
1318 | compilation units. Set this to zero to disable caching. Cache | |
1319 | sizes of up to at least twenty will improve startup time for | |
1320 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1321 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1322 | static void |
b4f54984 DE |
1323 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1324 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1325 | { |
3e43a32a | 1326 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1327 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1328 | value); |
1329 | } | |
4390d890 | 1330 | \f |
c906108c SS |
1331 | /* local function prototypes */ |
1332 | ||
918dd910 JK |
1333 | static void dwarf2_find_base_address (struct die_info *die, |
1334 | struct dwarf2_cu *cu); | |
1335 | ||
891813be | 1336 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1337 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1338 | const char *name); | |
0018ea6f | 1339 | |
f1902523 JK |
1340 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1341 | const gdb_byte *info_ptr, | |
3e225074 | 1342 | struct die_info *type_unit_die); |
f1902523 | 1343 | |
976ca316 | 1344 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1345 | |
72bf9492 DJ |
1346 | static void scan_partial_symbols (struct partial_die_info *, |
1347 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1348 | int, struct dwarf2_cu *); |
c906108c | 1349 | |
72bf9492 DJ |
1350 | static void add_partial_symbol (struct partial_die_info *, |
1351 | struct dwarf2_cu *); | |
63d06c5c | 1352 | |
72bf9492 DJ |
1353 | static void add_partial_namespace (struct partial_die_info *pdi, |
1354 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1355 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1356 | |
5d7cb8df | 1357 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1358 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1359 | struct dwarf2_cu *cu); |
1360 | ||
72bf9492 DJ |
1361 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1362 | struct dwarf2_cu *cu); | |
91c24f0a | 1363 | |
bc30ff58 JB |
1364 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1365 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1366 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1367 | |
d521ce57 | 1368 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1369 | |
dee91e82 | 1370 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1371 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1372 | |
fb816e8b TV |
1373 | /* A pair of partial_die_info and compilation unit. */ |
1374 | struct cu_partial_die_info | |
1375 | { | |
1376 | /* The compilation unit of the partial_die_info. */ | |
1377 | struct dwarf2_cu *cu; | |
1378 | /* A partial_die_info. */ | |
1379 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1380 | |
1381 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1382 | : cu (cu), | |
1383 | pdi (pdi) | |
405feb71 | 1384 | { /* Nothing. */ } |
122cf0f2 AB |
1385 | |
1386 | private: | |
1387 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1388 | }; |
1389 | ||
122cf0f2 AB |
1390 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1391 | struct dwarf2_cu *); | |
72bf9492 | 1392 | |
d521ce57 | 1393 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
4444f407 TT |
1394 | struct attribute *, |
1395 | const struct attr_abbrev *, | |
7a5f294d | 1396 | const gdb_byte *); |
18a8505e AT |
1397 | |
1398 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1399 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1400 | |
1401 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1402 | |
976ca316 SM |
1403 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1404 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1405 | |
ed2dc618 | 1406 | static const char *read_indirect_string |
976ca316 | 1407 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1408 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1409 | |
ed2dc618 | 1410 | static const char *read_indirect_string_at_offset |
976ca316 | 1411 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1412 | |
d521ce57 TT |
1413 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1414 | const gdb_byte *, | |
3019eac3 DE |
1415 | unsigned int *); |
1416 | ||
18a8505e AT |
1417 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1418 | ULONGEST str_index); | |
1419 | ||
1420 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1421 | ULONGEST str_index); | |
3019eac3 | 1422 | |
e142c38c | 1423 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1424 | |
e142c38c DJ |
1425 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1426 | struct dwarf2_cu *); | |
c906108c | 1427 | |
7d45c7c3 | 1428 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1429 | struct dwarf2_cu *cu); |
7d45c7c3 | 1430 | |
a084a2a6 AT |
1431 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1432 | ||
05cf31d1 | 1433 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1434 | struct dwarf2_cu *cu); |
05cf31d1 | 1435 | |
e142c38c | 1436 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1437 | |
e142c38c | 1438 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1439 | struct dwarf2_cu **); |
63d06c5c | 1440 | |
9c541725 | 1441 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1442 | struct dwarf2_cu *cu); |
debd256d | 1443 | |
f3f5162e | 1444 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1445 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1446 | CORE_ADDR, int decode_mapping); |
c906108c | 1447 | |
804d2729 TT |
1448 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1449 | const char *); | |
c906108c | 1450 | |
a14ed312 | 1451 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1452 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1453 | |
ff39bb5e | 1454 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1455 | struct dwarf2_cu *); |
c906108c | 1456 | |
ff39bb5e | 1457 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1458 | struct type *type, |
1459 | const char *name, | |
1460 | struct obstack *obstack, | |
12df843f | 1461 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1462 | const gdb_byte **bytes, |
98bfdba5 | 1463 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1464 | |
57567375 TT |
1465 | static struct type *read_subrange_index_type (struct die_info *die, |
1466 | struct dwarf2_cu *cu); | |
1467 | ||
e7c27a73 | 1468 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1469 | |
b4ba55a1 JB |
1470 | static int need_gnat_info (struct dwarf2_cu *); |
1471 | ||
3e43a32a MS |
1472 | static struct type *die_descriptive_type (struct die_info *, |
1473 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1474 | |
1475 | static void set_descriptive_type (struct type *, struct die_info *, | |
1476 | struct dwarf2_cu *); | |
1477 | ||
e7c27a73 DJ |
1478 | static struct type *die_containing_type (struct die_info *, |
1479 | struct dwarf2_cu *); | |
c906108c | 1480 | |
ff39bb5e | 1481 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1482 | struct dwarf2_cu *); |
c906108c | 1483 | |
f792889a | 1484 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1485 | |
673bfd45 DE |
1486 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1487 | ||
0d5cff50 | 1488 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1489 | |
6e70227d | 1490 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1491 | const char *suffix, int physname, |
1492 | struct dwarf2_cu *cu); | |
63d06c5c | 1493 | |
e7c27a73 | 1494 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1495 | |
348e048f DE |
1496 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1497 | ||
e7c27a73 | 1498 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1499 | |
e7c27a73 | 1500 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1501 | |
96408a79 SA |
1502 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1503 | ||
71a3c369 TT |
1504 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1505 | ||
41144253 | 1506 | /* Return the .debug_loclists section to use for cu. */ |
1507 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1508 | ||
d0ce17d8 CT |
1509 | /* Return the .debug_rnglists section to use for cu. */ |
1510 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1511 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1512 | ||
3a2b436a | 1513 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1514 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1515 | enum pc_bounds_kind |
1516 | { | |
e385593e | 1517 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1518 | PC_BOUNDS_NOT_PRESENT, |
1519 | ||
e385593e JK |
1520 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1521 | were present but they do not form a valid range of PC addresses. */ | |
1522 | PC_BOUNDS_INVALID, | |
1523 | ||
3a2b436a JK |
1524 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1525 | PC_BOUNDS_RANGES, | |
1526 | ||
1527 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1528 | PC_BOUNDS_HIGH_LOW, | |
1529 | }; | |
1530 | ||
1531 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1532 | CORE_ADDR *, CORE_ADDR *, | |
1533 | struct dwarf2_cu *, | |
891813be | 1534 | dwarf2_psymtab *); |
c906108c | 1535 | |
fae299cd DC |
1536 | static void get_scope_pc_bounds (struct die_info *, |
1537 | CORE_ADDR *, CORE_ADDR *, | |
1538 | struct dwarf2_cu *); | |
1539 | ||
801e3a5b | 1540 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1541 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1542 | |
a14ed312 | 1543 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1544 | struct dwarf2_cu *); |
c906108c | 1545 | |
a14ed312 | 1546 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1547 | struct type *, struct dwarf2_cu *); |
c906108c | 1548 | |
a14ed312 | 1549 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1550 | struct die_info *, struct type *, |
e7c27a73 | 1551 | struct dwarf2_cu *); |
c906108c | 1552 | |
a14ed312 | 1553 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1554 | struct type *, |
1555 | struct dwarf2_cu *); | |
c906108c | 1556 | |
134d01f1 | 1557 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1558 | |
e7c27a73 | 1559 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1560 | |
e7c27a73 | 1561 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1562 | |
5d7cb8df JK |
1563 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1564 | ||
804d2729 | 1565 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1566 | |
27aa8d6a SW |
1567 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1568 | ||
74921315 KS |
1569 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1570 | ||
f55ee35c JK |
1571 | static struct type *read_module_type (struct die_info *die, |
1572 | struct dwarf2_cu *cu); | |
1573 | ||
38d518c9 | 1574 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1575 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1576 | |
134d01f1 | 1577 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1578 | |
7d79de9a TT |
1579 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1580 | bool * = nullptr); | |
c906108c | 1581 | |
6e70227d | 1582 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1583 | struct dwarf2_cu *); |
1584 | ||
bf6af496 | 1585 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1586 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1587 | struct die_info *); |
639d11d3 | 1588 | |
dee91e82 | 1589 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1590 | const gdb_byte *info_ptr, |
1591 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1592 | struct die_info *parent); |
1593 | ||
d521ce57 TT |
1594 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1595 | struct die_info **, const gdb_byte *, | |
3e225074 | 1596 | int); |
3019eac3 | 1597 | |
d521ce57 | 1598 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1599 | struct die_info **, const gdb_byte *); |
93311388 | 1600 | |
e7c27a73 | 1601 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1602 | |
15d034d0 | 1603 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1604 | struct objfile *); |
71c25dea | 1605 | |
15d034d0 | 1606 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1607 | |
15d034d0 | 1608 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1609 | struct die_info *die, |
1610 | struct dwarf2_cu *cu); | |
1611 | ||
ca69b9e6 DE |
1612 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1613 | struct dwarf2_cu *cu); | |
1614 | ||
e142c38c | 1615 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1616 | struct dwarf2_cu **); |
9219021c | 1617 | |
d97bc12b DE |
1618 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1619 | ||
1620 | static void dump_die_for_error (struct die_info *); | |
1621 | ||
1622 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1623 | struct die_info *); | |
c906108c | 1624 | |
d97bc12b | 1625 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1626 | |
51545339 | 1627 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1628 | struct dwarf2_cu *); |
c906108c | 1629 | |
348e048f | 1630 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1631 | const struct attribute *, |
348e048f DE |
1632 | struct dwarf2_cu **); |
1633 | ||
10b3939b | 1634 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1635 | const struct attribute *, |
f2f0e013 | 1636 | struct dwarf2_cu **); |
c906108c | 1637 | |
348e048f | 1638 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1639 | const struct attribute *, |
348e048f DE |
1640 | struct dwarf2_cu **); |
1641 | ||
ac9ec31b DE |
1642 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1643 | struct dwarf2_cu *); | |
1644 | ||
1645 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1646 | const struct attribute *, |
ac9ec31b DE |
1647 | struct dwarf2_cu *); |
1648 | ||
ab432490 SM |
1649 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1650 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1651 | |
ab432490 SM |
1652 | static void read_signatured_type (signatured_type *sig_type, |
1653 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1654 | |
63e43d3a PMR |
1655 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1656 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1657 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1658 | |
c906108c SS |
1659 | /* memory allocation interface */ |
1660 | ||
7b5a2f43 | 1661 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1662 | |
b60c80d6 | 1663 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1664 | |
43f3e411 | 1665 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1666 | |
8cf6f0b1 TT |
1667 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1668 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1669 | const struct attribute *attr); |
8cf6f0b1 | 1670 | |
ff39bb5e | 1671 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1672 | struct symbol *sym, |
f1e6e072 TT |
1673 | struct dwarf2_cu *cu, |
1674 | int is_block); | |
4c2df51b | 1675 | |
d521ce57 TT |
1676 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1677 | const gdb_byte *info_ptr, | |
7c32eebb | 1678 | const struct abbrev_info *abbrev); |
4bb7a0a7 | 1679 | |
72bf9492 DJ |
1680 | static hashval_t partial_die_hash (const void *item); |
1681 | ||
1682 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1683 | ||
ae038cb0 | 1684 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1685 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1686 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1687 | |
9816fde3 | 1688 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1689 | struct die_info *comp_unit_die, |
1690 | enum language pretend_language); | |
93311388 | 1691 | |
f792889a | 1692 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1693 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1694 | |
976ca316 | 1695 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1696 | |
976ca316 | 1697 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1698 | |
ab432490 SM |
1699 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1700 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1701 | dwarf2_cu *existing_cu, |
ab432490 SM |
1702 | bool skip_partial, |
1703 | enum language pretend_language); | |
10b3939b | 1704 | |
8fc0b21d | 1705 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1706 | enum language pretend_language); |
10b3939b | 1707 | |
8fc0b21d | 1708 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1709 | enum language pretend_language); |
f4dc4d17 | 1710 | |
10b3939b DJ |
1711 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1712 | struct dwarf2_per_cu_data *); | |
1713 | ||
ae038cb0 DJ |
1714 | static void dwarf2_mark (struct dwarf2_cu *); |
1715 | ||
b64f50a1 | 1716 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1717 | dwarf2_per_cu_data *per_cu, |
1718 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1719 | |
f792889a | 1720 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1721 | |
120ce1b5 SM |
1722 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1723 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1724 | enum language pretend_language); |
1725 | ||
976ca316 | 1726 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1727 | |
b303c6f6 AB |
1728 | /* Class, the destructor of which frees all allocated queue entries. This |
1729 | will only have work to do if an error was thrown while processing the | |
1730 | dwarf. If no error was thrown then the queue entries should have all | |
1731 | been processed, and freed, as we went along. */ | |
1732 | ||
1733 | class dwarf2_queue_guard | |
1734 | { | |
1735 | public: | |
39856def TT |
1736 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1737 | : m_per_objfile (per_objfile) | |
1738 | { | |
08ac5771 SM |
1739 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1740 | ||
1741 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1742 | } |
b303c6f6 AB |
1743 | |
1744 | /* Free any entries remaining on the queue. There should only be | |
1745 | entries left if we hit an error while processing the dwarf. */ | |
1746 | ~dwarf2_queue_guard () | |
1747 | { | |
08ac5771 SM |
1748 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1749 | ||
1750 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1751 | } |
b303c6f6 | 1752 | |
39856def | 1753 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1754 | |
39856def TT |
1755 | private: |
1756 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1757 | }; |
1758 | ||
39856def TT |
1759 | dwarf2_queue_item::~dwarf2_queue_item () |
1760 | { | |
1761 | /* Anything still marked queued is likely to be in an | |
1762 | inconsistent state, so discard it. */ | |
1763 | if (per_cu->queued) | |
1764 | { | |
7188ed02 | 1765 | per_objfile->remove_cu (per_cu); |
39856def TT |
1766 | per_cu->queued = 0; |
1767 | } | |
1768 | } | |
1769 | ||
d721ba37 PA |
1770 | /* The return type of find_file_and_directory. Note, the enclosed |
1771 | string pointers are only valid while this object is valid. */ | |
1772 | ||
1773 | struct file_and_directory | |
1774 | { | |
1775 | /* The filename. This is never NULL. */ | |
1776 | const char *name; | |
1777 | ||
1778 | /* The compilation directory. NULL if not known. If we needed to | |
1779 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1780 | points directly to the DW_AT_comp_dir string attribute owned by | |
1781 | the obstack that owns the DIE. */ | |
1782 | const char *comp_dir; | |
1783 | ||
1784 | /* If we needed to build a new string for comp_dir, this is what | |
1785 | owns the storage. */ | |
1786 | std::string comp_dir_storage; | |
1787 | }; | |
1788 | ||
1789 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1790 | struct dwarf2_cu *cu); | |
9291a0cd | 1791 | |
298e9637 | 1792 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1793 | |
298e9637 | 1794 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1795 | |
57d63ce2 | 1796 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1797 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1798 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1799 | |
976ca316 | 1800 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1801 | |
3019eac3 | 1802 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1803 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1804 | ULONGEST signature); | |
3019eac3 DE |
1805 | |
1806 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1807 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1808 | |
1b555f17 | 1809 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1810 | |
263db9a1 TT |
1811 | /* A unique pointer to a dwo_file. */ |
1812 | ||
51ac9db5 | 1813 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1814 | |
976ca316 | 1815 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1816 | |
1b80a9fa | 1817 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1818 | |
1819 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1820 | \f |
1821 | /* Various complaints about symbol reading that don't abort the process. */ | |
1822 | ||
4390d890 DE |
1823 | static void |
1824 | dwarf2_debug_line_missing_file_complaint (void) | |
1825 | { | |
b98664d3 | 1826 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1827 | } |
1828 | ||
1829 | static void | |
1830 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1831 | { | |
b98664d3 | 1832 | complaint (_(".debug_line section has line " |
4390d890 DE |
1833 | "program sequence without an end")); |
1834 | } | |
1835 | ||
1836 | static void | |
1837 | dwarf2_complex_location_expr_complaint (void) | |
1838 | { | |
b98664d3 | 1839 | complaint (_("location expression too complex")); |
4390d890 DE |
1840 | } |
1841 | ||
1842 | static void | |
1843 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1844 | int arg3) | |
1845 | { | |
b98664d3 | 1846 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1847 | arg1, arg2, arg3); |
1848 | } | |
1849 | ||
4390d890 DE |
1850 | static void |
1851 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1852 | { | |
b98664d3 | 1853 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1854 | arg1, arg2); |
1855 | } | |
527f3840 JK |
1856 | |
1857 | /* Hash function for line_header_hash. */ | |
1858 | ||
1859 | static hashval_t | |
1860 | line_header_hash (const struct line_header *ofs) | |
1861 | { | |
9c541725 | 1862 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1863 | } |
1864 | ||
1865 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1866 | ||
1867 | static hashval_t | |
1868 | line_header_hash_voidp (const void *item) | |
1869 | { | |
9a3c8263 | 1870 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1871 | |
1872 | return line_header_hash (ofs); | |
1873 | } | |
1874 | ||
1875 | /* Equality function for line_header_hash. */ | |
1876 | ||
1877 | static int | |
1878 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1879 | { | |
9a3c8263 SM |
1880 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1881 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1882 | |
9c541725 | 1883 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1884 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1885 | } | |
1886 | ||
4390d890 | 1887 | \f |
9291a0cd | 1888 | |
330cdd98 PA |
1889 | /* See declaration. */ |
1890 | ||
5989a64e SM |
1891 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1892 | bool can_copy_) | |
c3699833 SM |
1893 | : obfd (obfd), |
1894 | can_copy (can_copy_) | |
330cdd98 PA |
1895 | { |
1896 | if (names == NULL) | |
1897 | names = &dwarf2_elf_names; | |
1898 | ||
330cdd98 PA |
1899 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1900 | locate_sections (obfd, sec, *names); | |
1901 | } | |
1902 | ||
5989a64e | 1903 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1904 | { |
b76e467d | 1905 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1906 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1907 | |
b2bdb8cf | 1908 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1909 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1910 | |
5989a64e | 1911 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1912 | } |
1913 | ||
7188ed02 | 1914 | /* See read.h. */ |
330cdd98 PA |
1915 | |
1916 | void | |
7188ed02 | 1917 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1918 | { |
08ac5771 SM |
1919 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1920 | ||
7188ed02 SM |
1921 | for (auto pair : m_dwarf2_cus) |
1922 | delete pair.second; | |
330cdd98 | 1923 | |
7188ed02 | 1924 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1925 | } |
1926 | ||
11ed8cad TT |
1927 | /* A helper class that calls free_cached_comp_units on |
1928 | destruction. */ | |
1929 | ||
1930 | class free_cached_comp_units | |
1931 | { | |
1932 | public: | |
1933 | ||
1934 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1935 | : m_per_objfile (per_objfile) | |
1936 | { | |
1937 | } | |
1938 | ||
1939 | ~free_cached_comp_units () | |
1940 | { | |
7188ed02 | 1941 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1942 | } |
1943 | ||
1944 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1945 | ||
1946 | private: | |
1947 | ||
1948 | dwarf2_per_objfile *m_per_objfile; | |
1949 | }; | |
1950 | ||
af758d11 SM |
1951 | /* See read.h. */ |
1952 | ||
1953 | bool | |
1954 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1955 | { | |
1956 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1957 | ||
1958 | return this->m_symtabs[per_cu->index] != nullptr; | |
1959 | } | |
1960 | ||
1961 | /* See read.h. */ | |
1962 | ||
1963 | compunit_symtab * | |
1964 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1965 | { | |
1966 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1967 | ||
1968 | return this->m_symtabs[per_cu->index]; | |
1969 | } | |
1970 | ||
1971 | /* See read.h. */ | |
1972 | ||
1973 | void | |
1974 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1975 | compunit_symtab *symtab) | |
1976 | { | |
1977 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1978 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1979 | ||
1980 | this->m_symtabs[per_cu->index] = symtab; | |
1981 | } | |
1982 | ||
c906108c | 1983 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1984 | information and return true if we have enough to do something. |
1985 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1986 | ELF names are used. CAN_COPY is true for formats where symbol |
1987 | interposition is possible and so symbol values must follow copy | |
1988 | relocation rules. */ | |
c906108c SS |
1989 | |
1990 | int | |
251d32d9 | 1991 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1992 | const struct dwarf2_debug_sections *names, |
4b610737 | 1993 | bool can_copy) |
c906108c | 1994 | { |
97cbe998 SDJ |
1995 | if (objfile->flags & OBJF_READNEVER) |
1996 | return 0; | |
1997 | ||
976ca316 | 1998 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1999 | |
976ca316 | 2000 | if (per_objfile == NULL) |
5989a64e | 2001 | { |
17ee85fc TT |
2002 | dwarf2_per_bfd *per_bfd; |
2003 | ||
8a91fbdf SM |
2004 | /* We can share a "dwarf2_per_bfd" with other objfiles if the |
2005 | BFD doesn't require relocations. | |
2006 | ||
2007 | We don't share with objfiles for which -readnow was requested, | |
2008 | because it would complicate things when loading the same BFD with | |
2009 | -readnow and then without -readnow. */ | |
2010 | if (!gdb_bfd_requires_relocations (objfile->obfd) | |
2011 | && (objfile->flags & OBJF_READNOW) == 0) | |
17ee85fc TT |
2012 | { |
2013 | /* See if one has been created for this BFD yet. */ | |
2014 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
2015 | ||
2016 | if (per_bfd == nullptr) | |
2017 | { | |
2018 | /* No, create it now. */ | |
2019 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2020 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
2021 | } | |
2022 | } | |
2023 | else | |
2024 | { | |
2025 | /* No sharing possible, create one specifically for this objfile. */ | |
2026 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2027 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
2028 | } | |
5989a64e | 2029 | |
976ca316 | 2030 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 2031 | } |
5bfd760d | 2032 | |
976ca316 SM |
2033 | return (!per_objfile->per_bfd->info.is_virtual |
2034 | && per_objfile->per_bfd->info.s.section != NULL | |
2035 | && !per_objfile->per_bfd->abbrev.is_virtual | |
2036 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
2037 | } |
2038 | ||
330cdd98 | 2039 | /* See declaration. */ |
c906108c | 2040 | |
330cdd98 | 2041 | void |
5989a64e SM |
2042 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
2043 | const dwarf2_debug_sections &names) | |
c906108c | 2044 | { |
fd361982 | 2045 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2046 | |
dc7650b8 JK |
2047 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2048 | { | |
2049 | } | |
950b7495 KS |
2050 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2051 | > bfd_get_file_size (abfd)) | |
2052 | { | |
2053 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2054 | warning (_("Discarding section %s which has a section size (%s" | |
2055 | ") larger than the file size [in module %s]"), | |
2056 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2057 | bfd_get_filename (abfd)); | |
2058 | } | |
fbedd546 | 2059 | else if (names.info.matches (sectp->name)) |
c906108c | 2060 | { |
330cdd98 | 2061 | this->info.s.section = sectp; |
fd361982 | 2062 | this->info.size = bfd_section_size (sectp); |
c906108c | 2063 | } |
fbedd546 | 2064 | else if (names.abbrev.matches (sectp->name)) |
c906108c | 2065 | { |
330cdd98 | 2066 | this->abbrev.s.section = sectp; |
fd361982 | 2067 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2068 | } |
fbedd546 | 2069 | else if (names.line.matches (sectp->name)) |
c906108c | 2070 | { |
330cdd98 | 2071 | this->line.s.section = sectp; |
fd361982 | 2072 | this->line.size = bfd_section_size (sectp); |
c906108c | 2073 | } |
fbedd546 | 2074 | else if (names.loc.matches (sectp->name)) |
c906108c | 2075 | { |
330cdd98 | 2076 | this->loc.s.section = sectp; |
fd361982 | 2077 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2078 | } |
fbedd546 | 2079 | else if (names.loclists.matches (sectp->name)) |
43988095 | 2080 | { |
330cdd98 | 2081 | this->loclists.s.section = sectp; |
fd361982 | 2082 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2083 | } |
fbedd546 | 2084 | else if (names.macinfo.matches (sectp->name)) |
c906108c | 2085 | { |
330cdd98 | 2086 | this->macinfo.s.section = sectp; |
fd361982 | 2087 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2088 | } |
fbedd546 | 2089 | else if (names.macro.matches (sectp->name)) |
cf2c3c16 | 2090 | { |
330cdd98 | 2091 | this->macro.s.section = sectp; |
fd361982 | 2092 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2093 | } |
fbedd546 | 2094 | else if (names.str.matches (sectp->name)) |
c906108c | 2095 | { |
330cdd98 | 2096 | this->str.s.section = sectp; |
fd361982 | 2097 | this->str.size = bfd_section_size (sectp); |
c906108c | 2098 | } |
fbedd546 | 2099 | else if (names.str_offsets.matches (sectp->name)) |
18a8505e AT |
2100 | { |
2101 | this->str_offsets.s.section = sectp; | |
2102 | this->str_offsets.size = bfd_section_size (sectp); | |
2103 | } | |
fbedd546 | 2104 | else if (names.line_str.matches (sectp->name)) |
43988095 | 2105 | { |
330cdd98 | 2106 | this->line_str.s.section = sectp; |
fd361982 | 2107 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2108 | } |
fbedd546 | 2109 | else if (names.addr.matches (sectp->name)) |
3019eac3 | 2110 | { |
330cdd98 | 2111 | this->addr.s.section = sectp; |
fd361982 | 2112 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2113 | } |
fbedd546 | 2114 | else if (names.frame.matches (sectp->name)) |
b6af0555 | 2115 | { |
330cdd98 | 2116 | this->frame.s.section = sectp; |
fd361982 | 2117 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2118 | } |
fbedd546 | 2119 | else if (names.eh_frame.matches (sectp->name)) |
b6af0555 | 2120 | { |
330cdd98 | 2121 | this->eh_frame.s.section = sectp; |
fd361982 | 2122 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2123 | } |
fbedd546 | 2124 | else if (names.ranges.matches (sectp->name)) |
af34e669 | 2125 | { |
330cdd98 | 2126 | this->ranges.s.section = sectp; |
fd361982 | 2127 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2128 | } |
fbedd546 | 2129 | else if (names.rnglists.matches (sectp->name)) |
43988095 | 2130 | { |
330cdd98 | 2131 | this->rnglists.s.section = sectp; |
fd361982 | 2132 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2133 | } |
fbedd546 | 2134 | else if (names.types.matches (sectp->name)) |
348e048f | 2135 | { |
8b70b953 TT |
2136 | struct dwarf2_section_info type_section; |
2137 | ||
2138 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2139 | type_section.s.section = sectp; |
fd361982 | 2140 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2141 | |
fd5866f6 | 2142 | this->types.push_back (type_section); |
348e048f | 2143 | } |
fbedd546 | 2144 | else if (names.gdb_index.matches (sectp->name)) |
9291a0cd | 2145 | { |
330cdd98 | 2146 | this->gdb_index.s.section = sectp; |
fd361982 | 2147 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2148 | } |
fbedd546 | 2149 | else if (names.debug_names.matches (sectp->name)) |
927aa2e7 JK |
2150 | { |
2151 | this->debug_names.s.section = sectp; | |
fd361982 | 2152 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2153 | } |
fbedd546 | 2154 | else if (names.debug_aranges.matches (sectp->name)) |
927aa2e7 JK |
2155 | { |
2156 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2157 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2158 | } |
dce234bc | 2159 | |
fd361982 AM |
2160 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2161 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2162 | this->has_section_at_zero = true; |
c906108c SS |
2163 | } |
2164 | ||
dce234bc | 2165 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2166 | SECTION_NAME. */ |
af34e669 | 2167 | |
dce234bc | 2168 | void |
3017a003 | 2169 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2170 | enum dwarf2_section_enum sect, |
2171 | asection **sectp, const gdb_byte **bufp, | |
2172 | bfd_size_type *sizep) | |
dce234bc | 2173 | { |
976ca316 | 2174 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2175 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2176 | |
2177 | /* We may see an objfile without any DWARF, in which case we just | |
2178 | return nothing. */ | |
976ca316 | 2179 | if (per_objfile == NULL) |
a3b2a86b TT |
2180 | { |
2181 | *sectp = NULL; | |
2182 | *bufp = NULL; | |
2183 | *sizep = 0; | |
2184 | return; | |
2185 | } | |
3017a003 TG |
2186 | switch (sect) |
2187 | { | |
2188 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2189 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2190 | break; |
2191 | case DWARF2_EH_FRAME: | |
976ca316 | 2192 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2193 | break; |
2194 | default: | |
2195 | gdb_assert_not_reached ("unexpected section"); | |
2196 | } | |
dce234bc | 2197 | |
96b79293 | 2198 | info->read (objfile); |
dce234bc | 2199 | |
96b79293 | 2200 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2201 | *bufp = info->buffer; |
2202 | *sizep = info->size; | |
2203 | } | |
2204 | ||
9291a0cd | 2205 | \f |
39298a5d | 2206 | /* DWARF quick_symbol_functions support. */ |
7b9f3c50 DE |
2207 | |
2208 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2209 | unique line tables, so we maintain a separate table of all .debug_line | |
2210 | derived entries to support the sharing. | |
2211 | All the quick functions need is the list of file names. We discard the | |
2212 | line_header when we're done and don't need to record it here. */ | |
2213 | struct quick_file_names | |
2214 | { | |
094b34ac DE |
2215 | /* The data used to construct the hash key. */ |
2216 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2217 | |
2218 | /* The number of entries in file_names, real_names. */ | |
2219 | unsigned int num_file_names; | |
2220 | ||
2221 | /* The file names from the line table, after being run through | |
2222 | file_full_name. */ | |
2223 | const char **file_names; | |
2224 | ||
2225 | /* The file names from the line table after being run through | |
2226 | gdb_realpath. These are computed lazily. */ | |
2227 | const char **real_names; | |
2228 | }; | |
2229 | ||
2230 | /* When using the index (and thus not using psymtabs), each CU has an | |
2231 | object of this type. This is used to hold information needed by | |
2232 | the various "quick" methods. */ | |
2233 | struct dwarf2_per_cu_quick_data | |
2234 | { | |
2235 | /* The file table. This can be NULL if there was no file table | |
2236 | or it's currently not read in. | |
5989a64e | 2237 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2238 | struct quick_file_names *file_names; |
2239 | ||
7b9f3c50 DE |
2240 | /* A temporary mark bit used when iterating over all CUs in |
2241 | expand_symtabs_matching. */ | |
2242 | unsigned int mark : 1; | |
2243 | ||
2244 | /* True if we've tried to read the file table and found there isn't one. | |
2245 | There will be no point in trying to read it again next time. */ | |
2246 | unsigned int no_file_data : 1; | |
2247 | }; | |
2248 | ||
edc02ceb TT |
2249 | /* A subclass of psymbol_functions that arranges to read the DWARF |
2250 | partial symbols when needed. */ | |
2251 | struct lazy_dwarf_reader : public psymbol_functions | |
2252 | { | |
2253 | using psymbol_functions::psymbol_functions; | |
2254 | ||
2255 | bool can_lazily_read_symbols () override | |
2256 | { | |
2257 | return true; | |
2258 | } | |
2259 | ||
2260 | void read_partial_symbols (struct objfile *objfile) override | |
2261 | { | |
2262 | if (dwarf2_has_info (objfile, nullptr)) | |
2263 | dwarf2_build_psymtabs (objfile, this); | |
2264 | } | |
2265 | }; | |
2266 | ||
2267 | static quick_symbol_functions_up | |
2268 | make_lazy_dwarf_reader () | |
2269 | { | |
2270 | return quick_symbol_functions_up (new lazy_dwarf_reader); | |
2271 | } | |
2272 | ||
39298a5d TT |
2273 | struct dwarf2_base_index_functions : public quick_symbol_functions |
2274 | { | |
2275 | bool has_symbols (struct objfile *objfile) override; | |
2276 | ||
2277 | struct symtab *find_last_source_symtab (struct objfile *objfile) override; | |
2278 | ||
2279 | void forget_cached_source_info (struct objfile *objfile) override; | |
2280 | ||
39298a5d TT |
2281 | enum language lookup_global_symbol_language (struct objfile *objfile, |
2282 | const char *name, | |
2283 | domain_enum domain, | |
2284 | bool *symbol_found_p) override | |
2285 | { | |
2286 | *symbol_found_p = false; | |
2287 | return language_unknown; | |
2288 | } | |
2289 | ||
4829711b | 2290 | void print_stats (struct objfile *objfile, bool print_bcache) override; |
39298a5d TT |
2291 | |
2292 | void expand_all_symtabs (struct objfile *objfile) override; | |
2293 | ||
39298a5d TT |
2294 | struct compunit_symtab *find_pc_sect_compunit_symtab |
2295 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
2296 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin) override; | |
2297 | ||
2298 | struct compunit_symtab *find_compunit_symtab_by_address | |
2299 | (struct objfile *objfile, CORE_ADDR address) override | |
2300 | { | |
2301 | return nullptr; | |
2302 | } | |
2303 | ||
2304 | void map_symbol_filenames (struct objfile *objfile, | |
f4655dee TT |
2305 | gdb::function_view<symbol_filename_ftype> fun, |
2306 | bool need_fullname) override; | |
39298a5d TT |
2307 | }; |
2308 | ||
2309 | struct dwarf2_gdb_index : public dwarf2_base_index_functions | |
2310 | { | |
39298a5d TT |
2311 | void dump (struct objfile *objfile) override; |
2312 | ||
0b7b2c2a | 2313 | void expand_matching_symbols |
39298a5d TT |
2314 | (struct objfile *, |
2315 | const lookup_name_info &lookup_name, | |
2316 | domain_enum domain, | |
2317 | int global, | |
39298a5d TT |
2318 | symbol_compare_ftype *ordered_compare) override; |
2319 | ||
df35e626 | 2320 | bool expand_symtabs_matching |
39298a5d TT |
2321 | (struct objfile *objfile, |
2322 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2323 | const lookup_name_info *lookup_name, | |
2324 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2325 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2326 | block_search_flags search_flags, |
3bfa51a7 | 2327 | domain_enum domain, |
39298a5d TT |
2328 | enum search_domain kind) override; |
2329 | }; | |
2330 | ||
2331 | struct dwarf2_debug_names_index : public dwarf2_base_index_functions | |
2332 | { | |
39298a5d TT |
2333 | void dump (struct objfile *objfile) override; |
2334 | ||
0b7b2c2a | 2335 | void expand_matching_symbols |
39298a5d TT |
2336 | (struct objfile *, |
2337 | const lookup_name_info &lookup_name, | |
2338 | domain_enum domain, | |
2339 | int global, | |
39298a5d TT |
2340 | symbol_compare_ftype *ordered_compare) override; |
2341 | ||
df35e626 | 2342 | bool expand_symtabs_matching |
39298a5d TT |
2343 | (struct objfile *objfile, |
2344 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2345 | const lookup_name_info *lookup_name, | |
2346 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2347 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2348 | block_search_flags search_flags, |
3bfa51a7 | 2349 | domain_enum domain, |
39298a5d TT |
2350 | enum search_domain kind) override; |
2351 | }; | |
2352 | ||
edc02ceb | 2353 | static quick_symbol_functions_up |
39298a5d TT |
2354 | make_dwarf_gdb_index () |
2355 | { | |
2356 | return quick_symbol_functions_up (new dwarf2_gdb_index); | |
2357 | } | |
2358 | ||
edc02ceb | 2359 | static quick_symbol_functions_up |
39298a5d TT |
2360 | make_dwarf_debug_names () |
2361 | { | |
2362 | return quick_symbol_functions_up (new dwarf2_debug_names_index); | |
2363 | } | |
2364 | ||
094b34ac DE |
2365 | /* Utility hash function for a stmt_list_hash. */ |
2366 | ||
2367 | static hashval_t | |
2368 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2369 | { | |
2370 | hashval_t v = 0; | |
2371 | ||
2372 | if (stmt_list_hash->dwo_unit != NULL) | |
2373 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2374 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2375 | return v; |
2376 | } | |
2377 | ||
2378 | /* Utility equality function for a stmt_list_hash. */ | |
2379 | ||
2380 | static int | |
2381 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2382 | const struct stmt_list_hash *rhs) | |
2383 | { | |
2384 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2385 | return 0; | |
2386 | if (lhs->dwo_unit != NULL | |
2387 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2388 | return 0; | |
2389 | ||
9c541725 | 2390 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2391 | } |
2392 | ||
7b9f3c50 DE |
2393 | /* Hash function for a quick_file_names. */ |
2394 | ||
2395 | static hashval_t | |
2396 | hash_file_name_entry (const void *e) | |
2397 | { | |
9a3c8263 SM |
2398 | const struct quick_file_names *file_data |
2399 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2400 | |
094b34ac | 2401 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2402 | } |
2403 | ||
2404 | /* Equality function for a quick_file_names. */ | |
2405 | ||
2406 | static int | |
2407 | eq_file_name_entry (const void *a, const void *b) | |
2408 | { | |
9a3c8263 SM |
2409 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2410 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2411 | |
094b34ac | 2412 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2413 | } |
2414 | ||
2415 | /* Delete function for a quick_file_names. */ | |
2416 | ||
2417 | static void | |
2418 | delete_file_name_entry (void *e) | |
2419 | { | |
9a3c8263 | 2420 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2421 | int i; |
2422 | ||
2423 | for (i = 0; i < file_data->num_file_names; ++i) | |
2424 | { | |
2425 | xfree ((void*) file_data->file_names[i]); | |
2426 | if (file_data->real_names) | |
2427 | xfree ((void*) file_data->real_names[i]); | |
2428 | } | |
2429 | ||
45940949 TT |
2430 | /* The space for the struct itself lives on the obstack, so we don't |
2431 | free it here. */ | |
7b9f3c50 DE |
2432 | } |
2433 | ||
2434 | /* Create a quick_file_names hash table. */ | |
2435 | ||
5895093f | 2436 | static htab_up |
7b9f3c50 DE |
2437 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2438 | { | |
5895093f TT |
2439 | return htab_up (htab_create_alloc (nr_initial_entries, |
2440 | hash_file_name_entry, eq_file_name_entry, | |
2441 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2442 | } |
9291a0cd | 2443 | |
ab432490 SM |
2444 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2445 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2446 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2447 | |
1b555f17 | 2448 | static dwarf2_cu * |
ab432490 SM |
2449 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2450 | bool skip_partial) | |
918dd910 | 2451 | { |
3019eac3 | 2452 | if (per_cu->is_debug_types) |
ab432490 | 2453 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2454 | else |
4a636814 SM |
2455 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2456 | skip_partial, language_minimal); | |
918dd910 | 2457 | |
7188ed02 SM |
2458 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2459 | if (cu == nullptr) | |
1b555f17 | 2460 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2461 | |
7188ed02 | 2462 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2463 | |
7188ed02 | 2464 | return cu; |
918dd910 JK |
2465 | } |
2466 | ||
1350c3b4 | 2467 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2468 | |
9291a0cd | 2469 | static void |
97a1449a | 2470 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2471 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2472 | { |
f4dc4d17 DE |
2473 | /* Skip type_unit_groups, reading the type units they contain |
2474 | is handled elsewhere. */ | |
197400e8 | 2475 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2476 | return; |
2477 | ||
08ac5771 SM |
2478 | { |
2479 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2480 | the queue. After this point we're guaranteed to leave this function | |
2481 | with the dwarf queue empty. */ | |
2482 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2483 | |
08ac5771 SM |
2484 | if (!per_objfile->symtab_set_p (per_cu)) |
2485 | { | |
2486 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2487 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2488 | ||
2489 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2490 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2491 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2492 | if (!per_cu->is_debug_types | |
2493 | && cu != NULL | |
2494 | && cu->dwo_unit != NULL | |
2495 | && per_objfile->per_bfd->index_table != NULL | |
2496 | && per_objfile->per_bfd->index_table->version <= 7 | |
2497 | /* DWP files aren't supported yet. */ | |
2498 | && get_dwp_file (per_objfile) == NULL) | |
2499 | queue_and_load_all_dwo_tus (cu); | |
2500 | } | |
9291a0cd | 2501 | |
08ac5771 SM |
2502 | process_queue (per_objfile); |
2503 | } | |
9291a0cd TT |
2504 | |
2505 | /* Age the cache, releasing compilation units that have not | |
2506 | been used recently. */ | |
976ca316 | 2507 | per_objfile->age_comp_units (); |
9291a0cd TT |
2508 | } |
2509 | ||
97a1449a SM |
2510 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2511 | the per-objfile for which this symtab is instantiated. | |
2512 | ||
2513 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2514 | |
43f3e411 | 2515 | static struct compunit_symtab * |
97a1449a | 2516 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2517 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2518 | bool skip_partial) |
9291a0cd | 2519 | { |
976ca316 | 2520 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2521 | |
976ca316 | 2522 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2523 | { |
976ca316 | 2524 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2525 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2526 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2527 | process_cu_includes (per_objfile); | |
9291a0cd | 2528 | } |
f194fefb | 2529 | |
976ca316 | 2530 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2531 | } |
2532 | ||
ff4c9fec | 2533 | /* See declaration. */ |
f4dc4d17 | 2534 | |
ff4c9fec | 2535 | dwarf2_per_cu_data * |
5989a64e | 2536 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2537 | { |
b76e467d | 2538 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2539 | { |
b76e467d | 2540 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2541 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2542 | return &this->all_type_units[index]->per_cu; |
2543 | } | |
f4dc4d17 | 2544 | |
ff4c9fec SM |
2545 | return this->all_comp_units[index]; |
2546 | } | |
f4dc4d17 | 2547 | |
ff4c9fec | 2548 | /* See declaration. */ |
2fdf6df6 | 2549 | |
ff4c9fec | 2550 | dwarf2_per_cu_data * |
5989a64e | 2551 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2552 | { |
b76e467d | 2553 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2554 | |
ff4c9fec | 2555 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2556 | } |
2557 | ||
ff4c9fec | 2558 | /* See declaration. */ |
f4dc4d17 | 2559 | |
ff4c9fec | 2560 | signatured_type * |
5989a64e | 2561 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2562 | { |
b2bdb8cf | 2563 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2564 | |
ff4c9fec | 2565 | return this->all_type_units[index]; |
1fd400ff TT |
2566 | } |
2567 | ||
d3473f0c TT |
2568 | /* See read.h. */ |
2569 | ||
2570 | dwarf2_per_cu_data * | |
5989a64e | 2571 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2572 | { |
2573 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2574 | result->per_bfd = this; |
d3473f0c TT |
2575 | result->index = m_num_psymtabs++; |
2576 | return result; | |
2577 | } | |
2578 | ||
2579 | /* See read.h. */ | |
2580 | ||
2581 | signatured_type * | |
5989a64e | 2582 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2583 | { |
2584 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2585 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2586 | result->per_cu.index = m_num_psymtabs++; |
2587 | return result; | |
2588 | } | |
2589 | ||
168c9250 | 2590 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2591 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2592 | |
2593 | static dwarf2_per_cu_data * | |
168c9250 SM |
2594 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2595 | struct dwarf2_section_info *section, | |
2596 | int is_dwz, | |
2597 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2598 | { |
168c9250 | 2599 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2600 | the_cu->sect_off = sect_off; |
2601 | the_cu->length = length; | |
4b514bc8 | 2602 | the_cu->section = section; |
168c9250 | 2603 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2604 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2605 | the_cu->is_dwz = is_dwz; |
2606 | return the_cu; | |
2607 | } | |
2608 | ||
2ec9a5e0 TT |
2609 | /* A helper for create_cus_from_index that handles a given list of |
2610 | CUs. */ | |
2fdf6df6 | 2611 | |
74a0d9f6 | 2612 | static void |
168c9250 | 2613 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2614 | const gdb_byte *cu_list, offset_type n_elements, |
2615 | struct dwarf2_section_info *section, | |
b76e467d | 2616 | int is_dwz) |
9291a0cd | 2617 | { |
12359b5e | 2618 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2619 | { |
74a0d9f6 | 2620 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2621 | |
2622 | sect_offset sect_off | |
2623 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2624 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2625 | cu_list += 2 * 8; |
2626 | ||
b76e467d | 2627 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2628 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2629 | length); | |
2630 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2631 | } |
9291a0cd TT |
2632 | } |
2633 | ||
2ec9a5e0 | 2634 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2635 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2636 | |
74a0d9f6 | 2637 | static void |
168c9250 | 2638 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2639 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2640 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2641 | { | |
168c9250 SM |
2642 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2643 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2644 | |
168c9250 SM |
2645 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2646 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2647 | |
2648 | if (dwz_elements == 0) | |
74a0d9f6 | 2649 | return; |
2ec9a5e0 | 2650 | |
168c9250 SM |
2651 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2652 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2653 | &dwz->info, 1); |
2ec9a5e0 TT |
2654 | } |
2655 | ||
1fd400ff | 2656 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2657 | |
74a0d9f6 | 2658 | static void |
12359b5e | 2659 | create_signatured_type_table_from_index |
168c9250 SM |
2660 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2661 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2662 | { |
168c9250 SM |
2663 | gdb_assert (per_bfd->all_type_units.empty ()); |
2664 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2665 | |
298e9637 | 2666 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2667 | |
12359b5e | 2668 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2669 | { |
52dc124a | 2670 | struct signatured_type *sig_type; |
9c541725 | 2671 | ULONGEST signature; |
1fd400ff | 2672 | void **slot; |
9c541725 | 2673 | cu_offset type_offset_in_tu; |
1fd400ff | 2674 | |
74a0d9f6 | 2675 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2676 | sect_offset sect_off |
2677 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2678 | type_offset_in_tu | |
2679 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2680 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2681 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2682 | bytes += 3 * 8; | |
2683 | ||
168c9250 | 2684 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2685 | sig_type->signature = signature; |
9c541725 | 2686 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2687 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2688 | sig_type->per_cu.section = section; |
9c541725 | 2689 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2690 | sig_type->per_cu.v.quick |
168c9250 | 2691 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2692 | struct dwarf2_per_cu_quick_data); |
2693 | ||
b0b6a987 | 2694 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2695 | *slot = sig_type; |
1fd400ff | 2696 | |
168c9250 | 2697 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2698 | } |
2699 | ||
168c9250 | 2700 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2701 | } |
2702 | ||
927aa2e7 JK |
2703 | /* Create the signatured type hash table from .debug_names. */ |
2704 | ||
2705 | static void | |
2706 | create_signatured_type_table_from_debug_names | |
976ca316 | 2707 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2708 | const mapped_debug_names &map, |
2709 | struct dwarf2_section_info *section, | |
2710 | struct dwarf2_section_info *abbrev_section) | |
2711 | { | |
976ca316 | 2712 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2713 | |
96b79293 TT |
2714 | section->read (objfile); |
2715 | abbrev_section->read (objfile); | |
927aa2e7 | 2716 | |
976ca316 SM |
2717 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2718 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2719 | |
298e9637 | 2720 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2721 | |
2722 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2723 | { | |
2724 | struct signatured_type *sig_type; | |
927aa2e7 | 2725 | void **slot; |
927aa2e7 JK |
2726 | |
2727 | sect_offset sect_off | |
2728 | = (sect_offset) (extract_unsigned_integer | |
2729 | (map.tu_table_reordered + i * map.offset_size, | |
2730 | map.offset_size, | |
2731 | map.dwarf5_byte_order)); | |
2732 | ||
2733 | comp_unit_head cu_header; | |
976ca316 | 2734 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2735 | abbrev_section, |
927aa2e7 JK |
2736 | section->buffer + to_underlying (sect_off), |
2737 | rcuh_kind::TYPE); | |
2738 | ||
976ca316 | 2739 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2740 | sig_type->signature = cu_header.signature; |
2741 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2742 | sig_type->per_cu.is_debug_types = 1; | |
2743 | sig_type->per_cu.section = section; | |
2744 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2745 | sig_type->per_cu.v.quick |
976ca316 | 2746 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2747 | struct dwarf2_per_cu_quick_data); |
2748 | ||
b0b6a987 | 2749 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2750 | *slot = sig_type; |
2751 | ||
976ca316 | 2752 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2753 | } |
2754 | ||
976ca316 | 2755 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2756 | } |
2757 | ||
9291a0cd | 2758 | /* Read the address map data from the mapped index, and use it to |
efd7398e | 2759 | populate the psymtabs_addrmap. */ |
2fdf6df6 | 2760 | |
9291a0cd | 2761 | static void |
976ca316 | 2762 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2763 | struct mapped_index *index) |
9291a0cd | 2764 | { |
976ca316 | 2765 | struct objfile *objfile = per_objfile->objfile; |
efd7398e | 2766 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
08feed99 | 2767 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2768 | const gdb_byte *iter, *end; |
9291a0cd | 2769 | struct addrmap *mutable_map; |
9291a0cd TT |
2770 | CORE_ADDR baseaddr; |
2771 | ||
8268c778 PA |
2772 | auto_obstack temp_obstack; |
2773 | ||
9291a0cd TT |
2774 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2775 | ||
f00a2de2 PA |
2776 | iter = index->address_table.data (); |
2777 | end = iter + index->address_table.size (); | |
9291a0cd | 2778 | |
b3b3bada | 2779 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2780 | |
2781 | while (iter < end) | |
2782 | { | |
2783 | ULONGEST hi, lo, cu_index; | |
2784 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2785 | iter += 8; | |
2786 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2787 | iter += 8; | |
2788 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2789 | iter += 4; | |
f652bce2 | 2790 | |
24a55014 | 2791 | if (lo > hi) |
f652bce2 | 2792 | { |
b98664d3 | 2793 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2794 | hex_string (lo), hex_string (hi)); |
24a55014 | 2795 | continue; |
f652bce2 | 2796 | } |
24a55014 | 2797 | |
efd7398e | 2798 | if (cu_index >= per_bfd->all_comp_units.size ()) |
f652bce2 | 2799 | { |
b98664d3 | 2800 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2801 | (unsigned) cu_index); |
24a55014 | 2802 | continue; |
f652bce2 | 2803 | } |
24a55014 | 2804 | |
79748972 TT |
2805 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2806 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2807 | addrmap_set_empty (mutable_map, lo, hi - 1, |
efd7398e | 2808 | per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2809 | } |
2810 | ||
efd7398e TT |
2811 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2812 | &per_bfd->obstack); | |
9291a0cd TT |
2813 | } |
2814 | ||
927aa2e7 | 2815 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
efd7398e | 2816 | populate the psymtabs_addrmap. */ |
927aa2e7 JK |
2817 | |
2818 | static void | |
976ca316 | 2819 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2820 | struct dwarf2_section_info *section) |
2821 | { | |
976ca316 | 2822 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2823 | bfd *abfd = objfile->obfd; |
08feed99 | 2824 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2825 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e | 2826 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
2827 | |
2828 | auto_obstack temp_obstack; | |
2829 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2830 | ||
2831 | std::unordered_map<sect_offset, | |
2832 | dwarf2_per_cu_data *, | |
2833 | gdb::hash_enum<sect_offset>> | |
2834 | debug_info_offset_to_per_cu; | |
bab287cd | 2835 | for (dwarf2_per_cu_data *per_cu : per_bfd->all_comp_units) |
927aa2e7 | 2836 | { |
927aa2e7 JK |
2837 | const auto insertpair |
2838 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2839 | if (!insertpair.second) | |
2840 | { | |
2841 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2842 | "debug_info_offset %s, ignoring .debug_aranges."), |
2843 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2844 | return; |
2845 | } | |
2846 | } | |
2847 | ||
96b79293 | 2848 | section->read (objfile); |
927aa2e7 JK |
2849 | |
2850 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2851 | ||
2852 | const gdb_byte *addr = section->buffer; | |
2853 | ||
2854 | while (addr < section->buffer + section->size) | |
2855 | { | |
2856 | const gdb_byte *const entry_addr = addr; | |
2857 | unsigned int bytes_read; | |
2858 | ||
2859 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2860 | &bytes_read); | |
2861 | addr += bytes_read; | |
2862 | ||
2863 | const gdb_byte *const entry_end = addr + entry_length; | |
2864 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2865 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2866 | if (addr + entry_length > section->buffer + section->size) | |
2867 | { | |
47e3f474 | 2868 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2869 | "length %s exceeds section length %s, " |
927aa2e7 | 2870 | "ignoring .debug_aranges."), |
47e3f474 TV |
2871 | objfile_name (objfile), |
2872 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2873 | plongest (bytes_read + entry_length), |
2874 | pulongest (section->size)); | |
2875 | return; | |
2876 | } | |
2877 | ||
2878 | /* The version number. */ | |
2879 | const uint16_t version = read_2_bytes (abfd, addr); | |
2880 | addr += 2; | |
2881 | if (version != 2) | |
2882 | { | |
47e3f474 | 2883 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2884 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2885 | objfile_name (objfile), |
2886 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2887 | return; |
2888 | } | |
2889 | ||
2890 | const uint64_t debug_info_offset | |
2891 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2892 | addr += offset_size; | |
2893 | const auto per_cu_it | |
2894 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2895 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2896 | { | |
47e3f474 | 2897 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2898 | "debug_info_offset %s does not exists, " |
2899 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2900 | objfile_name (objfile), |
2901 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2902 | pulongest (debug_info_offset)); |
2903 | return; | |
2904 | } | |
2905 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2906 | ||
2907 | const uint8_t address_size = *addr++; | |
2908 | if (address_size < 1 || address_size > 8) | |
2909 | { | |
47e3f474 | 2910 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2911 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2912 | objfile_name (objfile), |
2913 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2914 | return; |
2915 | } | |
2916 | ||
2917 | const uint8_t segment_selector_size = *addr++; | |
2918 | if (segment_selector_size != 0) | |
2919 | { | |
47e3f474 | 2920 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2921 | "segment_selector_size %u is not supported, " |
2922 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2923 | objfile_name (objfile), |
2924 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2925 | segment_selector_size); |
2926 | return; | |
2927 | } | |
2928 | ||
2929 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2930 | size. It is undocumented by the DWARF standard but GCC does |
2931 | use it. */ | |
927aa2e7 JK |
2932 | for (size_t padding = ((-(addr - section->buffer)) |
2933 | & (2 * address_size - 1)); | |
dda83cd7 | 2934 | padding > 0; padding--) |
927aa2e7 JK |
2935 | if (*addr++ != 0) |
2936 | { | |
47e3f474 | 2937 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2938 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2939 | objfile_name (objfile), |
2940 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2941 | return; |
2942 | } | |
2943 | ||
2944 | for (;;) | |
2945 | { | |
2946 | if (addr + 2 * address_size > entry_end) | |
2947 | { | |
47e3f474 | 2948 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2949 | "address list is not properly terminated, " |
2950 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2951 | objfile_name (objfile), |
2952 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2953 | return; |
2954 | } | |
2955 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2956 | dwarf5_byte_order); | |
2957 | addr += address_size; | |
2958 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2959 | dwarf5_byte_order); | |
2960 | addr += address_size; | |
2961 | if (start == 0 && length == 0) | |
2962 | break; | |
efd7398e | 2963 | if (start == 0 && !per_bfd->has_section_at_zero) |
927aa2e7 JK |
2964 | { |
2965 | /* Symbol was eliminated due to a COMDAT group. */ | |
2966 | continue; | |
2967 | } | |
2968 | ULONGEST end = start + length; | |
79748972 TT |
2969 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2970 | - baseaddr); | |
2971 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2972 | - baseaddr); | |
927aa2e7 JK |
2973 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2974 | } | |
2975 | } | |
2976 | ||
efd7398e TT |
2977 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2978 | &per_bfd->obstack); | |
927aa2e7 JK |
2979 | } |
2980 | ||
4485a1c1 SM |
2981 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2982 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2983 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2984 | ok to use deprecated sections. |
2985 | ||
2986 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2987 | out parameters that are filled in with information about the CU and | |
2988 | TU lists in the section. | |
2989 | ||
4485a1c1 | 2990 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2991 | |
d33bc52e | 2992 | static bool |
3810f182 | 2993 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2994 | bool deprecated_ok, |
2995 | gdb::array_view<const gdb_byte> buffer, | |
2996 | struct mapped_index *map, | |
2997 | const gdb_byte **cu_list, | |
2998 | offset_type *cu_list_elements, | |
2999 | const gdb_byte **types_list, | |
3000 | offset_type *types_list_elements) | |
3001 | { | |
3002 | const gdb_byte *addr = &buffer[0]; | |
42c2c694 | 3003 | offset_view metadata (buffer); |
82430852 | 3004 | |
9291a0cd | 3005 | /* Version check. */ |
42c2c694 | 3006 | offset_type version = metadata[0]; |
987d643c | 3007 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3008 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3009 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3010 | indices. */ |
831adc1f | 3011 | if (version < 4) |
481860b3 GB |
3012 | { |
3013 | static int warning_printed = 0; | |
3014 | if (!warning_printed) | |
3015 | { | |
3016 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3017 | filename); |
481860b3 GB |
3018 | warning_printed = 1; |
3019 | } | |
3020 | return 0; | |
3021 | } | |
3022 | /* Index version 4 uses a different hash function than index version | |
3023 | 5 and later. | |
3024 | ||
3025 | Versions earlier than 6 did not emit psymbols for inlined | |
3026 | functions. Using these files will cause GDB not to be able to | |
3027 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3028 | indices unless the user has done |
3029 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3030 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3031 | { |
3032 | static int warning_printed = 0; | |
3033 | if (!warning_printed) | |
3034 | { | |
e615022a DE |
3035 | warning (_("\ |
3036 | Skipping deprecated .gdb_index section in %s.\n\ | |
3037 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3038 | to use the section anyway."), | |
2ec9a5e0 | 3039 | filename); |
481860b3 GB |
3040 | warning_printed = 1; |
3041 | } | |
3042 | return 0; | |
3043 | } | |
796a7ff8 | 3044 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3045 | of the TU (for symbols coming from TUs), |
3046 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3047 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3048 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3049 | These are just performance bugs, and we can't distinguish gdb-generated | |
3050 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3051 | |
481860b3 | 3052 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3053 | longer backward compatible. */ |
796a7ff8 | 3054 | if (version > 8) |
594e8718 | 3055 | return 0; |
9291a0cd | 3056 | |
559a7a62 | 3057 | map->version = version; |
9291a0cd | 3058 | |
42c2c694 TT |
3059 | int i = 1; |
3060 | *cu_list = addr + metadata[i]; | |
3061 | *cu_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
1fd400ff TT |
3062 | ++i; |
3063 | ||
42c2c694 TT |
3064 | *types_list = addr + metadata[i]; |
3065 | *types_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
987d643c | 3066 | ++i; |
1fd400ff | 3067 | |
42c2c694 TT |
3068 | const gdb_byte *address_table = addr + metadata[i]; |
3069 | const gdb_byte *address_table_end = addr + metadata[i + 1]; | |
f00a2de2 PA |
3070 | map->address_table |
3071 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3072 | ++i; |
3073 | ||
42c2c694 TT |
3074 | const gdb_byte *symbol_table = addr + metadata[i]; |
3075 | const gdb_byte *symbol_table_end = addr + metadata[i + 1]; | |
f00a2de2 | 3076 | map->symbol_table |
42c2c694 TT |
3077 | = offset_view (gdb::array_view<const gdb_byte> (symbol_table, |
3078 | symbol_table_end)); | |
9291a0cd | 3079 | |
f00a2de2 | 3080 | ++i; |
42c2c694 | 3081 | map->constant_pool = buffer.slice (metadata[i]); |
1fd400ff | 3082 | |
2ec9a5e0 TT |
3083 | return 1; |
3084 | } | |
3085 | ||
4485a1c1 SM |
3086 | /* Callback types for dwarf2_read_gdb_index. */ |
3087 | ||
3088 | typedef gdb::function_view | |
5989a64e | 3089 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3090 | get_gdb_index_contents_ftype; |
3091 | typedef gdb::function_view | |
3092 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3093 | get_gdb_index_contents_dwz_ftype; | |
3094 | ||
927aa2e7 | 3095 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3096 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3097 | ||
3098 | static int | |
4485a1c1 | 3099 | dwarf2_read_gdb_index |
976ca316 | 3100 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3101 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3102 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3103 | { |
2ec9a5e0 TT |
3104 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3105 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3106 | struct dwz_file *dwz; |
976ca316 | 3107 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3108 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3109 | |
4485a1c1 | 3110 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3111 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3112 | |
3113 | if (main_index_contents.empty ()) | |
3114 | return 0; | |
3115 | ||
3063847f | 3116 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3117 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3118 | use_deprecated_index_sections, |
3119 | main_index_contents, map.get (), &cu_list, | |
3120 | &cu_list_elements, &types_list, | |
3121 | &types_list_elements)) | |
2ec9a5e0 TT |
3122 | return 0; |
3123 | ||
0fefef59 | 3124 | /* Don't use the index if it's empty. */ |
3063847f | 3125 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3126 | return 0; |
3127 | ||
2ec9a5e0 TT |
3128 | /* If there is a .dwz file, read it so we can get its CU list as |
3129 | well. */ | |
f8c41851 | 3130 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3131 | if (dwz != NULL) |
2ec9a5e0 | 3132 | { |
2ec9a5e0 TT |
3133 | struct mapped_index dwz_map; |
3134 | const gdb_byte *dwz_types_ignore; | |
3135 | offset_type dwz_types_elements_ignore; | |
3136 | ||
4485a1c1 SM |
3137 | gdb::array_view<const gdb_byte> dwz_index_content |
3138 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3139 | ||
3140 | if (dwz_index_content.empty ()) | |
3141 | return 0; | |
3142 | ||
3810f182 | 3143 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3144 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3145 | &dwz_list, &dwz_list_elements, |
3146 | &dwz_types_ignore, | |
3147 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3148 | { |
3149 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3150 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3151 | return 0; |
3152 | } | |
3153 | } | |
3154 | ||
f8c41851 SM |
3155 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3156 | dwz_list_elements); | |
1fd400ff | 3157 | |
8b70b953 TT |
3158 | if (types_list_elements) |
3159 | { | |
8b70b953 TT |
3160 | /* We can only handle a single .debug_types when we have an |
3161 | index. */ | |
f8c41851 | 3162 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3163 | return 0; |
3164 | ||
f8c41851 | 3165 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3166 | |
f8c41851 | 3167 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3168 | types_list_elements); |
8b70b953 | 3169 | } |
9291a0cd | 3170 | |
976ca316 | 3171 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3172 | |
f8c41851 SM |
3173 | per_bfd->index_table = std::move (map); |
3174 | per_bfd->using_index = 1; | |
3175 | per_bfd->quick_file_names_table = | |
3176 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3177 | ||
9291a0cd TT |
3178 | return 1; |
3179 | } | |
3180 | ||
dee91e82 | 3181 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3182 | |
dee91e82 DE |
3183 | static void |
3184 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
3e225074 | 3185 | struct die_info *comp_unit_die) |
9291a0cd | 3186 | { |
dee91e82 | 3187 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3188 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3189 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3190 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3191 | struct attribute *attr; |
7b9f3c50 DE |
3192 | void **slot; |
3193 | struct quick_file_names *qfn; | |
9291a0cd | 3194 | |
0186c6a7 DE |
3195 | gdb_assert (! this_cu->is_debug_types); |
3196 | ||
07261596 TT |
3197 | /* Our callers never want to match partial units -- instead they |
3198 | will match the enclosing full CU. */ | |
3199 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3200 | { | |
3201 | this_cu->v.quick->no_file_data = 1; | |
3202 | return; | |
3203 | } | |
3204 | ||
0186c6a7 | 3205 | lh_cu = this_cu; |
7b9f3c50 | 3206 | slot = NULL; |
dee91e82 | 3207 | |
fff8551c | 3208 | line_header_up lh; |
9c541725 | 3209 | sect_offset line_offset {}; |
fff8551c | 3210 | |
dee91e82 | 3211 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3212 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3213 | { |
7b9f3c50 DE |
3214 | struct quick_file_names find_entry; |
3215 | ||
d4df075e | 3216 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3217 | |
3218 | /* We may have already read in this line header (TU line header sharing). | |
3219 | If we have we're done. */ | |
094b34ac | 3220 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3221 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3222 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3223 | &find_entry, INSERT); |
3224 | if (*slot != NULL) | |
3225 | { | |
9a3c8263 | 3226 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3227 | return; |
7b9f3c50 DE |
3228 | } |
3229 | ||
3019eac3 | 3230 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3231 | } |
3232 | if (lh == NULL) | |
3233 | { | |
094b34ac | 3234 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3235 | return; |
9291a0cd TT |
3236 | } |
3237 | ||
976ca316 | 3238 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3239 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3240 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3241 | gdb_assert (slot != NULL); |
3242 | *slot = qfn; | |
9291a0cd | 3243 | |
d721ba37 | 3244 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3245 | |
aa391654 TT |
3246 | int offset = 0; |
3247 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3248 | ++offset; | |
3249 | ||
7ba99d21 | 3250 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3251 | qfn->file_names = |
976ca316 | 3252 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3253 | qfn->num_file_names); |
aa391654 TT |
3254 | if (offset != 0) |
3255 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3256 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3257 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3258 | fnd.comp_dir).release (); | |
7b9f3c50 | 3259 | qfn->real_names = NULL; |
9291a0cd | 3260 | |
094b34ac | 3261 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3262 | } |
3263 | ||
3264 | /* A helper for the "quick" functions which attempts to read the line | |
3265 | table for THIS_CU. */ | |
3266 | ||
3267 | static struct quick_file_names * | |
ab432490 SM |
3268 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3269 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3270 | { |
0186c6a7 DE |
3271 | /* This should never be called for TUs. */ |
3272 | gdb_assert (! this_cu->is_debug_types); | |
3273 | /* Nor type unit groups. */ | |
197400e8 | 3274 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3275 | |
dee91e82 DE |
3276 | if (this_cu->v.quick->file_names != NULL) |
3277 | return this_cu->v.quick->file_names; | |
3278 | /* If we know there is no line data, no point in looking again. */ | |
3279 | if (this_cu->v.quick->no_file_data) | |
3280 | return NULL; | |
3281 | ||
ab432490 | 3282 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3283 | if (!reader.dummy_p) |
eb5dd737 | 3284 | dw2_get_file_names_reader (&reader, reader.comp_unit_die); |
dee91e82 DE |
3285 | |
3286 | if (this_cu->v.quick->no_file_data) | |
3287 | return NULL; | |
3288 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3289 | } |
3290 | ||
3291 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3292 | real path for a given file name from the line table. */ |
2fdf6df6 | 3293 | |
9291a0cd | 3294 | static const char * |
976ca316 | 3295 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3296 | struct quick_file_names *qfn, int index) |
9291a0cd | 3297 | { |
7b9f3c50 | 3298 | if (qfn->real_names == NULL) |
976ca316 | 3299 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3300 | qfn->num_file_names, const char *); |
9291a0cd | 3301 | |
7b9f3c50 | 3302 | if (qfn->real_names[index] == NULL) |
14278e1f | 3303 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3304 | |
7b9f3c50 | 3305 | return qfn->real_names[index]; |
9291a0cd TT |
3306 | } |
3307 | ||
39298a5d TT |
3308 | struct symtab * |
3309 | dwarf2_base_index_functions::find_last_source_symtab (struct objfile *objfile) | |
9291a0cd | 3310 | { |
976ca316 SM |
3311 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3312 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3313 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3314 | |
43f3e411 DE |
3315 | if (cust == NULL) |
3316 | return NULL; | |
ed2dc618 | 3317 | |
43f3e411 | 3318 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3319 | } |
3320 | ||
7b9f3c50 DE |
3321 | /* Traversal function for dw2_forget_cached_source_info. */ |
3322 | ||
3323 | static int | |
3324 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3325 | { |
7b9f3c50 | 3326 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3327 | |
7b9f3c50 | 3328 | if (file_data->real_names) |
9291a0cd | 3329 | { |
7b9f3c50 | 3330 | int i; |
9291a0cd | 3331 | |
7b9f3c50 | 3332 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3333 | { |
7b9f3c50 DE |
3334 | xfree ((void*) file_data->real_names[i]); |
3335 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3336 | } |
3337 | } | |
7b9f3c50 DE |
3338 | |
3339 | return 1; | |
3340 | } | |
3341 | ||
39298a5d TT |
3342 | void |
3343 | dwarf2_base_index_functions::forget_cached_source_info | |
3344 | (struct objfile *objfile) | |
7b9f3c50 | 3345 | { |
976ca316 | 3346 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3347 | |
976ca316 | 3348 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3349 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3350 | } |
3351 | ||
da51c347 DE |
3352 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3353 | ||
3354 | struct dw2_symtab_iterator | |
9291a0cd | 3355 | { |
ed2dc618 | 3356 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3357 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3358 | /* If set, only look for symbols that match that block. Valid values are |
3359 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3360 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3361 | /* The kind of symbol we're looking for. */ |
3362 | domain_enum domain; | |
3363 | /* The list of CUs from the index entry of the symbol, | |
3364 | or NULL if not found. */ | |
42c2c694 | 3365 | offset_view vec; |
da51c347 DE |
3366 | /* The next element in VEC to look at. */ |
3367 | int next; | |
3368 | /* The number of elements in VEC, or zero if there is no match. */ | |
3369 | int length; | |
8943b874 DE |
3370 | /* Have we seen a global version of the symbol? |
3371 | If so we can ignore all further global instances. | |
3372 | This is to work around gold/15646, inefficient gold-generated | |
3373 | indices. */ | |
3374 | int global_seen; | |
da51c347 | 3375 | }; |
9291a0cd | 3376 | |
7089bd88 | 3377 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ |
2fdf6df6 | 3378 | |
9291a0cd | 3379 | static void |
7089bd88 TT |
3380 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3381 | dwarf2_per_objfile *per_objfile, | |
3382 | gdb::optional<block_enum> block_index, | |
3383 | domain_enum domain, offset_type namei) | |
da51c347 | 3384 | { |
976ca316 | 3385 | iter->per_objfile = per_objfile; |
da51c347 DE |
3386 | iter->block_index = block_index; |
3387 | iter->domain = domain; | |
3388 | iter->next = 0; | |
8943b874 | 3389 | iter->global_seen = 0; |
42c2c694 | 3390 | iter->vec = {}; |
e5f3ece2 | 3391 | iter->length = 0; |
e5f3ece2 TV |
3392 | |
3393 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3394 | /* index is NULL if OBJF_READNOW. */ | |
3395 | if (index == NULL) | |
3396 | return; | |
3397 | ||
3398 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
42c2c694 | 3399 | offset_type vec_idx = index->symbol_vec_index (namei); |
e5f3ece2 | 3400 | |
42c2c694 TT |
3401 | iter->vec = offset_view (index->constant_pool.slice (vec_idx)); |
3402 | iter->length = iter->vec[0]; | |
da51c347 DE |
3403 | } |
3404 | ||
3405 | /* Return the next matching CU or NULL if there are no more. */ | |
3406 | ||
3407 | static struct dwarf2_per_cu_data * | |
3408 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3409 | { | |
976ca316 | 3410 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3411 | |
da51c347 DE |
3412 | for ( ; iter->next < iter->length; ++iter->next) |
3413 | { | |
42c2c694 | 3414 | offset_type cu_index_and_attrs = iter->vec[iter->next + 1]; |
da51c347 | 3415 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); |
da51c347 DE |
3416 | gdb_index_symbol_kind symbol_kind = |
3417 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3418 | /* Only check the symbol attributes if they're present. | |
3419 | Indices prior to version 7 don't record them, | |
3420 | and indices >= 7 may elide them for certain symbols | |
3421 | (gold does this). */ | |
3422 | int attrs_valid = | |
976ca316 | 3423 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3424 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3425 | ||
3190f0c6 | 3426 | /* Don't crash on bad data. */ |
976ca316 SM |
3427 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3428 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3429 | { |
b98664d3 | 3430 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3431 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3432 | continue; |
3433 | } | |
3434 | ||
976ca316 | 3435 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3436 | |
da51c347 | 3437 | /* Skip if already read in. */ |
976ca316 | 3438 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3439 | continue; |
3440 | ||
8943b874 DE |
3441 | /* Check static vs global. */ |
3442 | if (attrs_valid) | |
3443 | { | |
2b79f376 SM |
3444 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3445 | ||
3446 | if (iter->block_index.has_value ()) | |
3447 | { | |
3448 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3449 | ||
3450 | if (is_static != want_static) | |
3451 | continue; | |
3452 | } | |
3453 | ||
8943b874 | 3454 | /* Work around gold/15646. */ |
f030440d TV |
3455 | if (!is_static |
3456 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3457 | { | |
3458 | if (iter->global_seen) | |
3459 | continue; | |
3460 | ||
3461 | iter->global_seen = 1; | |
3462 | } | |
8943b874 | 3463 | } |
da51c347 DE |
3464 | |
3465 | /* Only check the symbol's kind if it has one. */ | |
3466 | if (attrs_valid) | |
3467 | { | |
3468 | switch (iter->domain) | |
3469 | { | |
3470 | case VAR_DOMAIN: | |
3471 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3472 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3473 | /* Some types are also in VAR_DOMAIN. */ | |
3474 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3475 | continue; | |
3476 | break; | |
3477 | case STRUCT_DOMAIN: | |
3478 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3479 | continue; | |
3480 | break; | |
3481 | case LABEL_DOMAIN: | |
3482 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3483 | continue; | |
3484 | break; | |
59c35742 AB |
3485 | case MODULE_DOMAIN: |
3486 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3487 | continue; | |
3488 | break; | |
da51c347 DE |
3489 | default: |
3490 | break; | |
3491 | } | |
3492 | } | |
3493 | ||
3494 | ++iter->next; | |
3495 | return per_cu; | |
3496 | } | |
3497 | ||
3498 | return NULL; | |
3499 | } | |
3500 | ||
39298a5d | 3501 | void |
4829711b TT |
3502 | dwarf2_base_index_functions::print_stats (struct objfile *objfile, |
3503 | bool print_bcache) | |
9291a0cd | 3504 | { |
4829711b TT |
3505 | if (print_bcache) |
3506 | return; | |
3507 | ||
976ca316 SM |
3508 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3509 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3510 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3511 | int count = 0; |
9291a0cd | 3512 | |
ed2dc618 | 3513 | for (int i = 0; i < total; ++i) |
9291a0cd | 3514 | { |
976ca316 | 3515 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3516 | |
976ca316 | 3517 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3518 | ++count; |
3519 | } | |
e4a48d9d | 3520 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3521 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3522 | } | |
3523 | ||
779bd270 DE |
3524 | /* This dumps minimal information about the index. |
3525 | It is called via "mt print objfiles". | |
3526 | One use is to verify .gdb_index has been loaded by the | |
3527 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3528 | ||
39298a5d TT |
3529 | void |
3530 | dwarf2_gdb_index::dump (struct objfile *objfile) | |
9291a0cd | 3531 | { |
976ca316 | 3532 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3533 | |
976ca316 | 3534 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3535 | printf_filtered (".gdb_index:"); |
976ca316 | 3536 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3537 | { |
3538 | printf_filtered (" version %d\n", | |
976ca316 | 3539 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3540 | } |
3541 | else | |
3542 | printf_filtered (" faked for \"readnow\"\n"); | |
3543 | printf_filtered ("\n"); | |
9291a0cd TT |
3544 | } |
3545 | ||
39298a5d TT |
3546 | void |
3547 | dwarf2_base_index_functions::expand_all_symtabs (struct objfile *objfile) | |
9291a0cd | 3548 | { |
976ca316 SM |
3549 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3550 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3551 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3552 | |
ed2dc618 | 3553 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3554 | { |
976ca316 | 3555 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3556 | |
58f0c718 TT |
3557 | /* We don't want to directly expand a partial CU, because if we |
3558 | read it with the wrong language, then assertion failures can | |
3559 | be triggered later on. See PR symtab/23010. So, tell | |
3560 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3561 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3562 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3563 | } |
3564 | } | |
3565 | ||
df35e626 | 3566 | static bool |
9a0bacfb TV |
3567 | dw2_expand_symtabs_matching_symbol |
3568 | (mapped_index_base &index, | |
3569 | const lookup_name_info &lookup_name_in, | |
3570 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3571 | gdb::function_view<bool (offset_type)> match_callback, |
3572 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb | 3573 | |
df35e626 | 3574 | static bool |
9a0bacfb | 3575 | dw2_expand_symtabs_matching_one |
97a1449a SM |
3576 | (dwarf2_per_cu_data *per_cu, |
3577 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3578 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3579 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3580 | ||
af82f89d | 3581 | void |
0b7b2c2a | 3582 | dwarf2_gdb_index::expand_matching_symbols |
199b4314 | 3583 | (struct objfile *objfile, |
b054970d | 3584 | const lookup_name_info &name, domain_enum domain, |
199b4314 | 3585 | int global, |
199b4314 | 3586 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3587 | { |
1aa98955 | 3588 | /* Used for Ada. */ |
976ca316 | 3589 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3590 | |
9a0bacfb TV |
3591 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3592 | ||
976ca316 | 3593 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3594 | { |
976ca316 | 3595 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3596 | |
9a0bacfb TV |
3597 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3598 | auto matcher = [&] (const char *symname) | |
3599 | { | |
3600 | if (ordered_compare == nullptr) | |
3601 | return true; | |
3602 | return ordered_compare (symname, match_name) == 0; | |
3603 | }; | |
3604 | ||
b64f703b | 3605 | dw2_expand_symtabs_matching_symbol (index, name, matcher, |
9a0bacfb TV |
3606 | [&] (offset_type namei) |
3607 | { | |
3608 | struct dw2_symtab_iterator iter; | |
3609 | struct dwarf2_per_cu_data *per_cu; | |
3610 | ||
976ca316 | 3611 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3612 | namei); |
9a0bacfb | 3613 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3614 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3615 | nullptr); |
9a0bacfb | 3616 | return true; |
976ca316 | 3617 | }, per_objfile); |
9a0bacfb TV |
3618 | } |
3619 | else | |
3620 | { | |
3621 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3622 | proceed assuming all symtabs have been read in. */ | |
3623 | } | |
9291a0cd TT |
3624 | } |
3625 | ||
e1ef7d7a PA |
3626 | /* Starting from a search name, return the string that finds the upper |
3627 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3628 | list. Returns the empty string to indicate that the upper bound is | |
3629 | the end of the list. */ | |
3630 | ||
3631 | static std::string | |
3632 | make_sort_after_prefix_name (const char *search_name) | |
3633 | { | |
3634 | /* When looking to complete "func", we find the upper bound of all | |
3635 | symbols that start with "func" by looking for where we'd insert | |
3636 | the closest string that would follow "func" in lexicographical | |
3637 | order. Usually, that's "func"-with-last-character-incremented, | |
3638 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3639 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3640 | Especially mind the 0xff character, which is a valid character in | |
3641 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3642 | rule out compilers allowing it in identifiers. Note that | |
3643 | conveniently, strcmp/strcasecmp are specified to compare | |
3644 | characters interpreted as unsigned char. So what we do is treat | |
3645 | the whole string as a base 256 number composed of a sequence of | |
3646 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3647 | to 0, and carries 1 to the following more-significant position. | |
3648 | If the very first character in SEARCH_NAME ends up incremented | |
3649 | and carries/overflows, then the upper bound is the end of the | |
3650 | list. The string after the empty string is also the empty | |
3651 | string. | |
3652 | ||
3653 | Some examples of this operation: | |
3654 | ||
3655 | SEARCH_NAME => "+1" RESULT | |
3656 | ||
3657 | "abc" => "abd" | |
3658 | "ab\xff" => "ac" | |
3659 | "\xff" "a" "\xff" => "\xff" "b" | |
3660 | "\xff" => "" | |
3661 | "\xff\xff" => "" | |
3662 | "" => "" | |
3663 | ||
3664 | Then, with these symbols for example: | |
3665 | ||
3666 | func | |
3667 | func1 | |
3668 | fund | |
3669 | ||
3670 | completing "func" looks for symbols between "func" and | |
3671 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3672 | which finds "func" and "func1", but not "fund". | |
3673 | ||
3674 | And with: | |
3675 | ||
3676 | funcÿ (Latin1 'ÿ' [0xff]) | |
3677 | funcÿ1 | |
3678 | fund | |
3679 | ||
3680 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3681 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3682 | ||
3683 | And with: | |
3684 | ||
3685 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3686 | ÿÿ1 | |
3687 | ||
3688 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3689 | the end of the list. | |
3690 | */ | |
3691 | std::string after = search_name; | |
3692 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3693 | after.pop_back (); | |
3694 | if (!after.empty ()) | |
3695 | after.back () = (unsigned char) after.back () + 1; | |
3696 | return after; | |
3697 | } | |
3698 | ||
5c58de74 | 3699 | /* See declaration. */ |
61d96d7e | 3700 | |
5c58de74 PA |
3701 | std::pair<std::vector<name_component>::const_iterator, |
3702 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3703 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3704 | (const lookup_name_info &lookup_name_without_params, language lang, |
3705 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3706 | { |
5c58de74 PA |
3707 | auto *name_cmp |
3708 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3709 | |
3b00ef10 | 3710 | const char *lang_name |
e0802d59 | 3711 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3712 | |
3f563c84 PA |
3713 | /* Comparison function object for lower_bound that matches against a |
3714 | given symbol name. */ | |
3715 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3716 | const char *name) | |
3717 | { | |
fcf23d5b | 3718 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3719 | const char *elem_name = elem_qualified + elem.name_offset; |
3720 | return name_cmp (elem_name, name) < 0; | |
3721 | }; | |
3722 | ||
3723 | /* Comparison function object for upper_bound that matches against a | |
3724 | given symbol name. */ | |
3725 | auto lookup_compare_upper = [&] (const char *name, | |
3726 | const name_component &elem) | |
3727 | { | |
fcf23d5b | 3728 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3729 | const char *elem_name = elem_qualified + elem.name_offset; |
3730 | return name_cmp (name, elem_name) < 0; | |
3731 | }; | |
3732 | ||
5c58de74 PA |
3733 | auto begin = this->name_components.begin (); |
3734 | auto end = this->name_components.end (); | |
3f563c84 PA |
3735 | |
3736 | /* Find the lower bound. */ | |
3737 | auto lower = [&] () | |
3738 | { | |
3b00ef10 | 3739 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3740 | return begin; |
3741 | else | |
3b00ef10 | 3742 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3743 | } (); |
3744 | ||
3745 | /* Find the upper bound. */ | |
3746 | auto upper = [&] () | |
3747 | { | |
5c58de74 | 3748 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3749 | { |
e1ef7d7a PA |
3750 | /* In completion mode, we want UPPER to point past all |
3751 | symbols names that have the same prefix. I.e., with | |
3752 | these symbols, and completing "func": | |
3753 | ||
3754 | function << lower bound | |
3755 | function1 | |
3756 | other_function << upper bound | |
3757 | ||
3758 | We find the upper bound by looking for the insertion | |
3759 | point of "func"-with-last-character-incremented, | |
3760 | i.e. "fund". */ | |
3b00ef10 | 3761 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3762 | if (after.empty ()) |
3f563c84 | 3763 | return end; |
e6b2f5ef PA |
3764 | return std::lower_bound (lower, end, after.c_str (), |
3765 | lookup_compare_lower); | |
3f563c84 PA |
3766 | } |
3767 | else | |
3b00ef10 | 3768 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3769 | } (); |
3770 | ||
5c58de74 PA |
3771 | return {lower, upper}; |
3772 | } | |
3773 | ||
3774 | /* See declaration. */ | |
3775 | ||
3776 | void | |
fcf23d5b | 3777 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3778 | { |
3779 | if (!this->name_components.empty ()) | |
3780 | return; | |
3781 | ||
3782 | this->name_components_casing = case_sensitivity; | |
3783 | auto *name_cmp | |
3784 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3785 | ||
3786 | /* The code below only knows how to break apart components of C++ | |
3787 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3788 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3789 | auto count = this->symbol_name_count (); |
3790 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3791 | { |
44ed8f3e | 3792 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3793 | continue; |
3794 | ||
fcf23d5b | 3795 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3796 | |
3797 | /* Add each name component to the name component table. */ | |
3798 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3799 | |
3800 | if (strstr (name, "::") != nullptr) | |
3801 | { | |
3802 | for (unsigned int current_len = cp_find_first_component (name); | |
3803 | name[current_len] != '\0'; | |
3804 | current_len += cp_find_first_component (name + current_len)) | |
3805 | { | |
3806 | gdb_assert (name[current_len] == ':'); | |
3807 | this->name_components.push_back ({previous_len, idx}); | |
3808 | /* Skip the '::'. */ | |
3809 | current_len += 2; | |
3810 | previous_len = current_len; | |
3811 | } | |
3812 | } | |
3813 | else | |
5c58de74 | 3814 | { |
3b00ef10 TT |
3815 | /* Handle the Ada encoded (aka mangled) form here. */ |
3816 | for (const char *iter = strstr (name, "__"); | |
3817 | iter != nullptr; | |
3818 | iter = strstr (iter, "__")) | |
3819 | { | |
3820 | this->name_components.push_back ({previous_len, idx}); | |
3821 | iter += 2; | |
3822 | previous_len = iter - name; | |
3823 | } | |
5c58de74 | 3824 | } |
3b00ef10 | 3825 | |
5c58de74 PA |
3826 | this->name_components.push_back ({previous_len, idx}); |
3827 | } | |
3828 | ||
3829 | /* Sort name_components elements by name. */ | |
3830 | auto name_comp_compare = [&] (const name_component &left, | |
3831 | const name_component &right) | |
3832 | { | |
fcf23d5b SM |
3833 | const char *left_qualified |
3834 | = this->symbol_name_at (left.idx, per_objfile); | |
3835 | const char *right_qualified | |
3836 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
3837 | |
3838 | const char *left_name = left_qualified + left.name_offset; | |
3839 | const char *right_name = right_qualified + right.name_offset; | |
3840 | ||
3841 | return name_cmp (left_name, right_name) < 0; | |
3842 | }; | |
3843 | ||
3844 | std::sort (this->name_components.begin (), | |
3845 | this->name_components.end (), | |
3846 | name_comp_compare); | |
3847 | } | |
3848 | ||
3849 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3850 | mapped_index_base instead of the containing objfile. This is split |
3851 | to a separate function in order to be able to unit test the | |
3852 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3853 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3854 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 | 3855 | |
df35e626 | 3856 | static bool |
5c58de74 | 3857 | dw2_expand_symtabs_matching_symbol |
44ed8f3e | 3858 | (mapped_index_base &index, |
5c58de74 PA |
3859 | const lookup_name_info &lookup_name_in, |
3860 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3861 | gdb::function_view<bool (offset_type)> match_callback, |
3862 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
3863 | { |
3864 | lookup_name_info lookup_name_without_params | |
3865 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3866 | |
3867 | /* Build the symbol name component sorted vector, if we haven't | |
3868 | yet. */ | |
fcf23d5b | 3869 | index.build_name_components (per_objfile); |
5c58de74 | 3870 | |
3f563c84 PA |
3871 | /* The same symbol may appear more than once in the range though. |
3872 | E.g., if we're looking for symbols that complete "w", and we have | |
3873 | a symbol named "w1::w2", we'll find the two name components for | |
3874 | that same symbol in the range. To be sure we only call the | |
3875 | callback once per symbol, we first collect the symbol name | |
3876 | indexes that matched in a temporary vector and ignore | |
3877 | duplicates. */ | |
3878 | std::vector<offset_type> matches; | |
3f563c84 | 3879 | |
3b00ef10 TT |
3880 | struct name_and_matcher |
3881 | { | |
3882 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 3883 | const char *name; |
3b00ef10 TT |
3884 | |
3885 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3886 | { |
ecc6c606 | 3887 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
3888 | } |
3889 | }; | |
3890 | ||
3891 | /* A vector holding all the different symbol name matchers, for all | |
3892 | languages. */ | |
3893 | std::vector<name_and_matcher> matchers; | |
3894 | ||
3895 | for (int i = 0; i < nr_languages; i++) | |
3896 | { | |
3897 | enum language lang_e = (enum language) i; | |
3898 | ||
3899 | const language_defn *lang = language_def (lang_e); | |
3900 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 3901 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 3902 | |
3b00ef10 | 3903 | name_and_matcher key { |
dda83cd7 | 3904 | name_matcher, |
3b00ef10 TT |
3905 | lookup_name_without_params.language_lookup_name (lang_e) |
3906 | }; | |
3907 | ||
3908 | /* Don't insert the same comparison routine more than once. | |
3909 | Note that we do this linear walk. This is not a problem in | |
3910 | practice because the number of supported languages is | |
3911 | low. */ | |
3912 | if (std::find (matchers.begin (), matchers.end (), key) | |
3913 | != matchers.end ()) | |
9291a0cd | 3914 | continue; |
3b00ef10 TT |
3915 | matchers.push_back (std::move (key)); |
3916 | ||
3917 | auto bounds | |
3918 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 3919 | lang_e, per_objfile); |
3b00ef10 TT |
3920 | |
3921 | /* Now for each symbol name in range, check to see if we have a name | |
3922 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3923 | ||
3924 | for (; bounds.first != bounds.second; ++bounds.first) | |
3925 | { | |
fcf23d5b SM |
3926 | const char *qualified |
3927 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
3928 | |
3929 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3930 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3931 | continue; | |
9291a0cd | 3932 | |
3b00ef10 TT |
3933 | matches.push_back (bounds.first->idx); |
3934 | } | |
3f563c84 PA |
3935 | } |
3936 | ||
3937 | std::sort (matches.begin (), matches.end ()); | |
3938 | ||
3939 | /* Finally call the callback, once per match. */ | |
3940 | ULONGEST prev = -1; | |
df35e626 | 3941 | bool result = true; |
3f563c84 PA |
3942 | for (offset_type idx : matches) |
3943 | { | |
3944 | if (prev != idx) | |
3945 | { | |
3b00ef10 | 3946 | if (!match_callback (idx)) |
df35e626 TT |
3947 | { |
3948 | result = false; | |
3949 | break; | |
3950 | } | |
3f563c84 PA |
3951 | prev = idx; |
3952 | } | |
3953 | } | |
3954 | ||
3955 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3956 | (offset_type)-1 are both possible values. */ | |
3957 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
df35e626 TT |
3958 | |
3959 | return result; | |
3f563c84 PA |
3960 | } |
3961 | ||
c62446b1 PA |
3962 | #if GDB_SELF_TEST |
3963 | ||
3964 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3965 | ||
a3c5fafd PA |
3966 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3967 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3968 | mapped_index_base interface. Builds an index from the symbol list | |
3969 | passed as parameter to the constructor. */ | |
3970 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3971 | { |
3972 | public: | |
a3c5fafd PA |
3973 | mock_mapped_index (gdb::array_view<const char *> symbols) |
3974 | : m_symbol_table (symbols) | |
c62446b1 PA |
3975 | {} |
3976 | ||
a3c5fafd | 3977 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 3978 | |
a3c5fafd | 3979 | /* Return the number of names in the symbol table. */ |
632e107b | 3980 | size_t symbol_name_count () const override |
c62446b1 | 3981 | { |
a3c5fafd | 3982 | return m_symbol_table.size (); |
c62446b1 PA |
3983 | } |
3984 | ||
a3c5fafd | 3985 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
3986 | const char *symbol_name_at |
3987 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
3988 | { |
3989 | return m_symbol_table[idx]; | |
3990 | } | |
c62446b1 | 3991 | |
a3c5fafd PA |
3992 | private: |
3993 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
3994 | }; |
3995 | ||
3996 | /* Convenience function that converts a NULL pointer to a "<null>" | |
3997 | string, to pass to print routines. */ | |
3998 | ||
3999 | static const char * | |
4000 | string_or_null (const char *str) | |
4001 | { | |
4002 | return str != NULL ? str : "<null>"; | |
4003 | } | |
4004 | ||
4005 | /* Check if a lookup_name_info built from | |
4006 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4007 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4008 | matching order. If no match expected, then an empty list is | |
4009 | specified. Returns true on success. On failure prints a warning | |
4010 | indicating the file:line that failed, and returns false. */ | |
4011 | ||
4012 | static bool | |
4013 | check_match (const char *file, int line, | |
4014 | mock_mapped_index &mock_index, | |
4015 | const char *name, symbol_name_match_type match_type, | |
4016 | bool completion_mode, | |
fcf23d5b SM |
4017 | std::initializer_list<const char *> expected_list, |
4018 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4019 | { |
4020 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4021 | ||
4022 | bool matched = true; | |
4023 | ||
4024 | auto mismatch = [&] (const char *expected_str, | |
4025 | const char *got) | |
4026 | { | |
4027 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4028 | "expected=\"%s\", got=\"%s\"\n"), | |
4029 | file, line, | |
4030 | (match_type == symbol_name_match_type::FULL | |
4031 | ? "FULL" : "WILD"), | |
4032 | name, string_or_null (expected_str), string_or_null (got)); | |
4033 | matched = false; | |
4034 | }; | |
4035 | ||
4036 | auto expected_it = expected_list.begin (); | |
4037 | auto expected_end = expected_list.end (); | |
4038 | ||
a3c5fafd | 4039 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
b64f703b | 4040 | nullptr, |
c62446b1 PA |
4041 | [&] (offset_type idx) |
4042 | { | |
fcf23d5b | 4043 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4044 | const char *expected_str |
4045 | = expected_it == expected_end ? NULL : *expected_it++; | |
4046 | ||
4047 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4048 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4049 | return true; |
fcf23d5b | 4050 | }, per_objfile); |
c62446b1 PA |
4051 | |
4052 | const char *expected_str | |
4053 | = expected_it == expected_end ? NULL : *expected_it++; | |
4054 | if (expected_str != NULL) | |
4055 | mismatch (expected_str, NULL); | |
4056 | ||
4057 | return matched; | |
4058 | } | |
4059 | ||
4060 | /* The symbols added to the mock mapped_index for testing (in | |
4061 | canonical form). */ | |
4062 | static const char *test_symbols[] = { | |
4063 | "function", | |
4064 | "std::bar", | |
4065 | "std::zfunction", | |
4066 | "std::zfunction2", | |
4067 | "w1::w2", | |
4068 | "ns::foo<char*>", | |
4069 | "ns::foo<int>", | |
4070 | "ns::foo<long>", | |
a20714ff PA |
4071 | "ns2::tmpl<int>::foo2", |
4072 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4073 | |
e1ef7d7a PA |
4074 | /* These are used to check that the increment-last-char in the |
4075 | matching algorithm for completion doesn't match "t1_fund" when | |
4076 | completing "t1_func". */ | |
4077 | "t1_func", | |
4078 | "t1_func1", | |
4079 | "t1_fund", | |
4080 | "t1_fund1", | |
4081 | ||
4082 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4083 | cp-name-parser understands this as a single identifier ("função" | |
4084 | is "function" in PT). */ | |
4085 | u8"u8função", | |
4086 | ||
4087 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4088 | "yfunc\377", | |
4089 | ||
4090 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4091 | "\377", | |
4092 | "\377\377123", | |
4093 | ||
c62446b1 PA |
4094 | /* A name with all sorts of complications. Starts with "z" to make |
4095 | it easier for the completion tests below. */ | |
4096 | #define Z_SYM_NAME \ | |
4097 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4098 | "::tuple<(anonymous namespace)::ui*, " \ | |
4099 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4100 | ||
4101 | Z_SYM_NAME | |
4102 | }; | |
4103 | ||
a3c5fafd PA |
4104 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4105 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4106 | in completion mode. */ | |
5c58de74 PA |
4107 | |
4108 | static bool | |
a3c5fafd | 4109 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4110 | const char *search_name, |
fcf23d5b SM |
4111 | gdb::array_view<const char *> expected_syms, |
4112 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4113 | { |
4114 | lookup_name_info lookup_name (search_name, | |
4115 | symbol_name_match_type::FULL, true); | |
4116 | ||
3b00ef10 | 4117 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4118 | language_cplus, |
4119 | per_objfile); | |
5c58de74 PA |
4120 | |
4121 | size_t distance = std::distance (bounds.first, bounds.second); | |
4122 | if (distance != expected_syms.size ()) | |
4123 | return false; | |
4124 | ||
4125 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4126 | { | |
4127 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4128 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4129 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4130 | return false; | |
4131 | } | |
4132 | ||
4133 | return true; | |
4134 | } | |
4135 | ||
4136 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4137 | method. */ | |
4138 | ||
c62446b1 | 4139 | static void |
5c58de74 PA |
4140 | test_mapped_index_find_name_component_bounds () |
4141 | { | |
4142 | mock_mapped_index mock_index (test_symbols); | |
4143 | ||
fcf23d5b | 4144 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4145 | |
4146 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4147 | method in completion mode. */ | |
4148 | { | |
4149 | static const char *expected_syms[] = { | |
4150 | "t1_func", | |
4151 | "t1_func1", | |
5c58de74 PA |
4152 | }; |
4153 | ||
fcf23d5b SM |
4154 | SELF_CHECK (check_find_bounds_finds |
4155 | (mock_index, "t1_func", expected_syms, | |
4156 | NULL /* per_objfile */)); | |
5c58de74 PA |
4157 | } |
4158 | ||
4159 | /* Check that the increment-last-char in the name matching algorithm | |
4160 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4161 | { | |
4162 | static const char *expected_syms1[] = { | |
4163 | "\377", | |
4164 | "\377\377123", | |
4165 | }; | |
fcf23d5b SM |
4166 | SELF_CHECK (check_find_bounds_finds |
4167 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4168 | |
4169 | static const char *expected_syms2[] = { | |
4170 | "\377\377123", | |
4171 | }; | |
fcf23d5b SM |
4172 | SELF_CHECK (check_find_bounds_finds |
4173 | (mock_index, "\377\377", expected_syms2, | |
4174 | NULL /* per_objfile */)); | |
5c58de74 PA |
4175 | } |
4176 | } | |
4177 | ||
4178 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4179 | ||
4180 | static void | |
4181 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4182 | { |
4183 | mock_mapped_index mock_index (test_symbols); | |
4184 | ||
4185 | /* We let all tests run until the end even if some fails, for debug | |
4186 | convenience. */ | |
4187 | bool any_mismatch = false; | |
4188 | ||
4189 | /* Create the expected symbols list (an initializer_list). Needed | |
4190 | because lists have commas, and we need to pass them to CHECK, | |
4191 | which is a macro. */ | |
4192 | #define EXPECT(...) { __VA_ARGS__ } | |
4193 | ||
4194 | /* Wrapper for check_match that passes down the current | |
4195 | __FILE__/__LINE__. */ | |
4196 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4197 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4198 | mock_index, \ | |
4199 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4200 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4201 | |
4202 | /* Identity checks. */ | |
4203 | for (const char *sym : test_symbols) | |
4204 | { | |
4205 | /* Should be able to match all existing symbols. */ | |
4206 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4207 | EXPECT (sym)); | |
4208 | ||
4209 | /* Should be able to match all existing symbols with | |
4210 | parameters. */ | |
4211 | std::string with_params = std::string (sym) + "(int)"; | |
4212 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4213 | EXPECT (sym)); | |
4214 | ||
4215 | /* Should be able to match all existing symbols with | |
4216 | parameters and qualifiers. */ | |
4217 | with_params = std::string (sym) + " ( int ) const"; | |
4218 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4219 | EXPECT (sym)); | |
4220 | ||
4221 | /* This should really find sym, but cp-name-parser.y doesn't | |
4222 | know about lvalue/rvalue qualifiers yet. */ | |
4223 | with_params = std::string (sym) + " ( int ) &&"; | |
4224 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4225 | {}); | |
4226 | } | |
4227 | ||
e1ef7d7a PA |
4228 | /* Check that the name matching algorithm for completion doesn't get |
4229 | confused with Latin1 'ÿ' / 0xff. */ | |
4230 | { | |
4231 | static const char str[] = "\377"; | |
4232 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4233 | EXPECT ("\377", "\377\377123")); | |
4234 | } | |
4235 | ||
4236 | /* Check that the increment-last-char in the matching algorithm for | |
4237 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4238 | { | |
4239 | static const char str[] = "t1_func"; | |
4240 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4241 | EXPECT ("t1_func", "t1_func1")); | |
4242 | } | |
4243 | ||
c62446b1 PA |
4244 | /* Check that completion mode works at each prefix of the expected |
4245 | symbol name. */ | |
4246 | { | |
4247 | static const char str[] = "function(int)"; | |
4248 | size_t len = strlen (str); | |
4249 | std::string lookup; | |
4250 | ||
4251 | for (size_t i = 1; i < len; i++) | |
4252 | { | |
4253 | lookup.assign (str, i); | |
4254 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4255 | EXPECT ("function")); | |
4256 | } | |
4257 | } | |
4258 | ||
4259 | /* While "w" is a prefix of both components, the match function | |
4260 | should still only be called once. */ | |
4261 | { | |
4262 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4263 | EXPECT ("w1::w2")); | |
a20714ff PA |
4264 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4265 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4266 | } |
4267 | ||
4268 | /* Same, with a "complicated" symbol. */ | |
4269 | { | |
4270 | static const char str[] = Z_SYM_NAME; | |
4271 | size_t len = strlen (str); | |
4272 | std::string lookup; | |
4273 | ||
4274 | for (size_t i = 1; i < len; i++) | |
4275 | { | |
4276 | lookup.assign (str, i); | |
4277 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4278 | EXPECT (Z_SYM_NAME)); | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4283 | { | |
4284 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4285 | {}); | |
4286 | } | |
4287 | ||
4288 | /* A complete symbol with parameters matches any overload, since the | |
4289 | index has no overload info. */ | |
4290 | { | |
4291 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4292 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4293 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4294 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4295 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4296 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4297 | } |
4298 | ||
4299 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4300 | template argument list. */ | |
4301 | { | |
4302 | static const char expected[] = "ns::foo<int>"; | |
4303 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4304 | EXPECT (expected)); | |
a20714ff PA |
4305 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4306 | EXPECT (expected)); | |
c62446b1 PA |
4307 | } |
4308 | ||
4309 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4310 | template argument list that includes a pointer. */ | |
4311 | { | |
4312 | static const char expected[] = "ns::foo<char*>"; | |
4313 | /* Try both completion and non-completion modes. */ | |
4314 | static const bool completion_mode[2] = {false, true}; | |
4315 | for (size_t i = 0; i < 2; i++) | |
4316 | { | |
4317 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4318 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4319 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4320 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4321 | |
4322 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4323 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4324 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4325 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4326 | } |
4327 | } | |
4328 | ||
4329 | { | |
4330 | /* Check method qualifiers are ignored. */ | |
4331 | static const char expected[] = "ns::foo<char*>"; | |
4332 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4333 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4334 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4335 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4336 | CHECK_MATCH ("foo < char * > ( int ) const", |
4337 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4338 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4339 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4340 | } |
4341 | ||
4342 | /* Test lookup names that don't match anything. */ | |
4343 | { | |
a20714ff PA |
4344 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4345 | {}); | |
4346 | ||
c62446b1 PA |
4347 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4348 | {}); | |
4349 | } | |
4350 | ||
a20714ff PA |
4351 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4352 | which should not be confused with a parameter list. */ | |
4353 | { | |
4354 | static const char *syms[] = { | |
4355 | "A::B::C", | |
4356 | "B::C", | |
4357 | "C", | |
4358 | "A :: B :: C ( int )", | |
4359 | "B :: C ( int )", | |
4360 | "C ( int )", | |
4361 | }; | |
4362 | ||
4363 | for (const char *s : syms) | |
4364 | { | |
4365 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4366 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | { | |
4371 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4372 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4373 | EXPECT (expected)); | |
4374 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4375 | EXPECT (expected)); | |
4376 | } | |
4377 | ||
c62446b1 PA |
4378 | SELF_CHECK (!any_mismatch); |
4379 | ||
4380 | #undef EXPECT | |
4381 | #undef CHECK_MATCH | |
4382 | } | |
4383 | ||
5c58de74 PA |
4384 | static void |
4385 | run_test () | |
4386 | { | |
4387 | test_mapped_index_find_name_component_bounds (); | |
4388 | test_dw2_expand_symtabs_matching_symbol (); | |
4389 | } | |
4390 | ||
c62446b1 PA |
4391 | }} // namespace selftests::dw2_expand_symtabs_matching |
4392 | ||
4393 | #endif /* GDB_SELF_TEST */ | |
4394 | ||
4b514bc8 JK |
4395 | /* If FILE_MATCHER is NULL or if PER_CU has |
4396 | dwarf2_per_cu_quick_data::MARK set (see | |
4397 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4398 | EXPANSION_NOTIFY on it. */ | |
4399 | ||
df35e626 | 4400 | static bool |
4b514bc8 | 4401 | dw2_expand_symtabs_matching_one |
97a1449a SM |
4402 | (dwarf2_per_cu_data *per_cu, |
4403 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4404 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4405 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4406 | { | |
4407 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4408 | { | |
af758d11 | 4409 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4410 | |
97a1449a SM |
4411 | compunit_symtab *symtab |
4412 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4413 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4414 | |
af758d11 | 4415 | if (expansion_notify != NULL && symtab_was_null) |
df35e626 | 4416 | return expansion_notify (symtab); |
4b514bc8 | 4417 | } |
df35e626 | 4418 | return true; |
4b514bc8 JK |
4419 | } |
4420 | ||
3f563c84 PA |
4421 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4422 | matched, to expand corresponding CUs that were marked. IDX is the | |
4423 | index of the symbol name that matched. */ | |
4424 | ||
df35e626 | 4425 | static bool |
3f563c84 | 4426 | dw2_expand_marked_cus |
976ca316 | 4427 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4428 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4429 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4430 | block_search_flags search_flags, |
3f563c84 PA |
4431 | search_domain kind) |
4432 | { | |
42c2c694 | 4433 | offset_type vec_len, vec_idx; |
3f563c84 | 4434 | bool global_seen = false; |
976ca316 | 4435 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4436 | |
42c2c694 TT |
4437 | offset_view vec (index.constant_pool.slice (index.symbol_vec_index (idx))); |
4438 | vec_len = vec[0]; | |
61920122 PA |
4439 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) |
4440 | { | |
42c2c694 | 4441 | offset_type cu_index_and_attrs = vec[vec_idx + 1]; |
61920122 PA |
4442 | /* This value is only valid for index versions >= 7. */ |
4443 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4444 | gdb_index_symbol_kind symbol_kind = | |
4445 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4446 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4447 | /* Only check the symbol attributes if they're present. | |
4448 | Indices prior to version 7 don't record them, | |
4449 | and indices >= 7 may elide them for certain symbols | |
4450 | (gold does this). */ | |
4451 | int attrs_valid = | |
4452 | (index.version >= 7 | |
4453 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4454 | ||
4455 | /* Work around gold/15646. */ | |
f030440d TV |
4456 | if (attrs_valid |
4457 | && !is_static | |
4458 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4459 | { |
f030440d | 4460 | if (global_seen) |
61920122 | 4461 | continue; |
f030440d TV |
4462 | |
4463 | global_seen = true; | |
61920122 | 4464 | } |
3190f0c6 | 4465 | |
61920122 PA |
4466 | /* Only check the symbol's kind if it has one. */ |
4467 | if (attrs_valid) | |
4468 | { | |
03a8ea51 TT |
4469 | if (is_static) |
4470 | { | |
4471 | if ((search_flags & SEARCH_STATIC_BLOCK) == 0) | |
4472 | continue; | |
4473 | } | |
4474 | else | |
4475 | { | |
4476 | if ((search_flags & SEARCH_GLOBAL_BLOCK) == 0) | |
4477 | continue; | |
4478 | } | |
4479 | ||
61920122 | 4480 | switch (kind) |
8943b874 | 4481 | { |
61920122 PA |
4482 | case VARIABLES_DOMAIN: |
4483 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4484 | continue; | |
4485 | break; | |
4486 | case FUNCTIONS_DOMAIN: | |
4487 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4488 | continue; |
61920122 PA |
4489 | break; |
4490 | case TYPES_DOMAIN: | |
4491 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4492 | continue; | |
4493 | break; | |
59c35742 AB |
4494 | case MODULES_DOMAIN: |
4495 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4496 | continue; | |
4497 | break; | |
61920122 PA |
4498 | default: |
4499 | break; | |
8943b874 | 4500 | } |
61920122 | 4501 | } |
8943b874 | 4502 | |
61920122 | 4503 | /* Don't crash on bad data. */ |
976ca316 SM |
4504 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4505 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4506 | { |
b98664d3 | 4507 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4508 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4509 | continue; |
4510 | } | |
4511 | ||
976ca316 | 4512 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
df35e626 TT |
4513 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
4514 | expansion_notify)) | |
4515 | return false; | |
61920122 | 4516 | } |
df35e626 TT |
4517 | |
4518 | return true; | |
61920122 PA |
4519 | } |
4520 | ||
4b514bc8 JK |
4521 | /* If FILE_MATCHER is non-NULL, set all the |
4522 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4523 | that match FILE_MATCHER. */ | |
4524 | ||
61920122 | 4525 | static void |
4b514bc8 | 4526 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4527 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4528 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4529 | { |
4b514bc8 | 4530 | if (file_matcher == NULL) |
61920122 PA |
4531 | return; |
4532 | ||
4b514bc8 JK |
4533 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4534 | htab_eq_pointer, | |
4535 | NULL, xcalloc, xfree)); | |
4536 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4537 | htab_eq_pointer, |
4538 | NULL, xcalloc, xfree)); | |
61920122 | 4539 | |
4b514bc8 JK |
4540 | /* The rule is CUs specify all the files, including those used by |
4541 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4542 | |
976ca316 | 4543 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4544 | { |
927aa2e7 JK |
4545 | QUIT; |
4546 | ||
4547 | per_cu->v.quick->mark = 0; | |
4548 | ||
4549 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4550 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4551 | continue; |
4552 | ||
976ca316 | 4553 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4554 | if (file_data == NULL) |
4555 | continue; | |
4556 | ||
4557 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4558 | continue; | |
4559 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4560 | { | |
4561 | per_cu->v.quick->mark = 1; | |
4562 | continue; | |
4563 | } | |
4564 | ||
b76e467d | 4565 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4566 | { |
4567 | const char *this_real_name; | |
4568 | ||
4569 | if (file_matcher (file_data->file_names[j], false)) | |
4570 | { | |
4571 | per_cu->v.quick->mark = 1; | |
4572 | break; | |
4573 | } | |
4574 | ||
4575 | /* Before we invoke realpath, which can get expensive when many | |
4576 | files are involved, do a quick comparison of the basenames. */ | |
4577 | if (!basenames_may_differ | |
4578 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4579 | true)) | |
4580 | continue; | |
4581 | ||
976ca316 | 4582 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4583 | if (file_matcher (this_real_name, false)) |
4584 | { | |
4585 | per_cu->v.quick->mark = 1; | |
4586 | break; | |
4587 | } | |
4588 | } | |
4589 | ||
b76e467d SM |
4590 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4591 | ? visited_found.get () | |
4592 | : visited_not_found.get (), | |
4593 | file_data, INSERT); | |
927aa2e7 JK |
4594 | *slot = file_data; |
4595 | } | |
4596 | } | |
4597 | ||
df35e626 | 4598 | bool |
af82f89d TT |
4599 | dwarf2_gdb_index::expand_symtabs_matching |
4600 | (struct objfile *objfile, | |
4601 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4602 | const lookup_name_info *lookup_name, | |
4603 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4604 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4605 | block_search_flags search_flags, |
3bfa51a7 | 4606 | domain_enum domain, |
af82f89d | 4607 | enum search_domain kind) |
927aa2e7 | 4608 | { |
976ca316 | 4609 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4610 | |
4611 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4612 | if (!per_objfile->per_bfd->index_table) |
df35e626 | 4613 | return true; |
927aa2e7 | 4614 | |
976ca316 | 4615 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4616 | |
c1a66c06 TV |
4617 | if (symbol_matcher == NULL && lookup_name == NULL) |
4618 | { | |
976ca316 | 4619 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4620 | { |
4621 | QUIT; | |
4622 | ||
df35e626 TT |
4623 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
4624 | file_matcher, | |
4625 | expansion_notify)) | |
4626 | return false; | |
c1a66c06 | 4627 | } |
df35e626 | 4628 | return true; |
c1a66c06 TV |
4629 | } |
4630 | ||
976ca316 | 4631 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4632 | |
df35e626 TT |
4633 | bool result |
4634 | = dw2_expand_symtabs_matching_symbol (index, *lookup_name, | |
4635 | symbol_matcher, | |
4636 | [&] (offset_type idx) | |
927aa2e7 | 4637 | { |
df35e626 | 4638 | if (!dw2_expand_marked_cus (per_objfile, idx, file_matcher, |
03a8ea51 | 4639 | expansion_notify, search_flags, kind)) |
df35e626 | 4640 | return false; |
3b00ef10 | 4641 | return true; |
976ca316 | 4642 | }, per_objfile); |
df35e626 TT |
4643 | |
4644 | return result; | |
927aa2e7 JK |
4645 | } |
4646 | ||
4647 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4648 | symtab. */ | |
4649 | ||
4650 | static struct compunit_symtab * | |
4651 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4652 | CORE_ADDR pc) | |
4653 | { | |
4654 | int i; | |
4655 | ||
4656 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4657 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4658 | return cust; | |
4659 | ||
4660 | if (cust->includes == NULL) | |
4661 | return NULL; | |
4662 | ||
4663 | for (i = 0; cust->includes[i]; ++i) | |
4664 | { | |
4665 | struct compunit_symtab *s = cust->includes[i]; | |
4666 | ||
4667 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4668 | if (s != NULL) | |
4669 | return s; | |
4670 | } | |
4671 | ||
4672 | return NULL; | |
4673 | } | |
4674 | ||
39298a5d TT |
4675 | struct compunit_symtab * |
4676 | dwarf2_base_index_functions::find_pc_sect_compunit_symtab | |
4677 | (struct objfile *objfile, | |
4678 | struct bound_minimal_symbol msymbol, | |
4679 | CORE_ADDR pc, | |
4680 | struct obj_section *section, | |
4681 | int warn_if_readin) | |
927aa2e7 JK |
4682 | { |
4683 | struct dwarf2_per_cu_data *data; | |
4684 | struct compunit_symtab *result; | |
4685 | ||
efd7398e TT |
4686 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4687 | if (per_objfile->per_bfd->index_addrmap == nullptr) | |
927aa2e7 JK |
4688 | return NULL; |
4689 | ||
b3b3bada | 4690 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e TT |
4691 | data = ((struct dwarf2_per_cu_data *) |
4692 | addrmap_find (per_objfile->per_bfd->index_addrmap, | |
4693 | pc - baseaddr)); | |
927aa2e7 JK |
4694 | if (!data) |
4695 | return NULL; | |
4696 | ||
af758d11 | 4697 | if (warn_if_readin && per_objfile->symtab_set_p (data)) |
927aa2e7 | 4698 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4699 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4700 | |
97a1449a SM |
4701 | result = recursively_find_pc_sect_compunit_symtab |
4702 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4703 | ||
927aa2e7 JK |
4704 | gdb_assert (result != NULL); |
4705 | return result; | |
4706 | } | |
4707 | ||
39298a5d | 4708 | void |
f4655dee TT |
4709 | dwarf2_base_index_functions::map_symbol_filenames |
4710 | (struct objfile *objfile, | |
4711 | gdb::function_view<symbol_filename_ftype> fun, | |
4712 | bool need_fullname) | |
927aa2e7 | 4713 | { |
976ca316 | 4714 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4715 | |
976ca316 | 4716 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4717 | { |
976ca316 | 4718 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4719 | |
4720 | htab_up visited (htab_create_alloc (10, | |
4721 | htab_hash_pointer, htab_eq_pointer, | |
4722 | NULL, xcalloc, xfree)); | |
4723 | ||
4724 | /* The rule is CUs specify all the files, including those used | |
4725 | by any TU, so there's no need to scan TUs here. We can | |
4726 | ignore file names coming from already-expanded CUs. */ | |
4727 | ||
976ca316 | 4728 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4729 | { |
976ca316 | 4730 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4731 | { |
4732 | void **slot = htab_find_slot (visited.get (), | |
4733 | per_cu->v.quick->file_names, | |
4734 | INSERT); | |
4735 | ||
4736 | *slot = per_cu->v.quick->file_names; | |
4737 | } | |
4738 | } | |
4739 | ||
976ca316 | 4740 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4741 | { |
927aa2e7 | 4742 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4743 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4744 | continue; |
4745 | ||
ab432490 | 4746 | quick_file_names *file_data |
976ca316 | 4747 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4748 | if (file_data == NULL) |
4749 | continue; | |
4750 | ||
b76e467d | 4751 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4752 | if (*slot) |
4753 | { | |
4754 | /* Already visited. */ | |
4755 | continue; | |
4756 | } | |
4757 | *slot = file_data; | |
4758 | ||
4759 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4760 | { | |
4761 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4762 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4763 | } |
4764 | } | |
4765 | } | |
4766 | ||
976ca316 | 4767 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4768 | { |
4769 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4770 | ||
4771 | if (need_fullname) | |
4772 | this_real_name = gdb_realpath (filename); | |
f4655dee | 4773 | fun (filename, this_real_name.get ()); |
927aa2e7 JK |
4774 | }); |
4775 | } | |
4776 | ||
39298a5d TT |
4777 | bool |
4778 | dwarf2_base_index_functions::has_symbols (struct objfile *objfile) | |
927aa2e7 | 4779 | { |
fae2120b | 4780 | return true; |
927aa2e7 JK |
4781 | } |
4782 | ||
927aa2e7 JK |
4783 | /* DWARF-5 debug_names reader. */ |
4784 | ||
4785 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4786 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4787 | ||
4788 | /* A helper function that reads the .debug_names section in SECTION | |
4789 | and fills in MAP. FILENAME is the name of the file containing the | |
4790 | section; it is used for error reporting. | |
4791 | ||
4792 | Returns true if all went well, false otherwise. */ | |
4793 | ||
4794 | static bool | |
4795 | read_debug_names_from_section (struct objfile *objfile, | |
4796 | const char *filename, | |
4797 | struct dwarf2_section_info *section, | |
4798 | mapped_debug_names &map) | |
4799 | { | |
96b79293 | 4800 | if (section->empty ()) |
927aa2e7 JK |
4801 | return false; |
4802 | ||
4803 | /* Older elfutils strip versions could keep the section in the main | |
4804 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4805 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4806 | return false; |
4807 | ||
96b79293 | 4808 | section->read (objfile); |
927aa2e7 | 4809 | |
08feed99 | 4810 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4811 | |
4812 | const gdb_byte *addr = section->buffer; | |
4813 | ||
96b79293 | 4814 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4815 | |
4816 | unsigned int bytes_read; | |
4817 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4818 | addr += bytes_read; | |
4819 | ||
4820 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4821 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4822 | if (bytes_read + length != section->size) | |
4823 | { | |
4824 | /* There may be multiple per-CU indices. */ | |
4825 | warning (_("Section .debug_names in %s length %s does not match " | |
4826 | "section length %s, ignoring .debug_names."), | |
4827 | filename, plongest (bytes_read + length), | |
4828 | pulongest (section->size)); | |
4829 | return false; | |
4830 | } | |
4831 | ||
4832 | /* The version number. */ | |
4833 | uint16_t version = read_2_bytes (abfd, addr); | |
4834 | addr += 2; | |
4835 | if (version != 5) | |
4836 | { | |
4837 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4838 | "ignoring .debug_names."), | |
4839 | filename, version); | |
4840 | return false; | |
4841 | } | |
4842 | ||
4843 | /* Padding. */ | |
4844 | uint16_t padding = read_2_bytes (abfd, addr); | |
4845 | addr += 2; | |
4846 | if (padding != 0) | |
4847 | { | |
4848 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4849 | "ignoring .debug_names."), | |
4850 | filename, padding); | |
4851 | return false; | |
4852 | } | |
4853 | ||
4854 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4855 | map.cu_count = read_4_bytes (abfd, addr); | |
4856 | addr += 4; | |
4857 | ||
4858 | /* local_type_unit_count - The number of TUs in the local TU | |
4859 | list. */ | |
4860 | map.tu_count = read_4_bytes (abfd, addr); | |
4861 | addr += 4; | |
4862 | ||
4863 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4864 | list. */ | |
4865 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4866 | addr += 4; | |
4867 | if (foreign_tu_count != 0) | |
4868 | { | |
4869 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4870 | "ignoring .debug_names."), | |
4871 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4872 | return false; | |
4873 | } | |
4874 | ||
4875 | /* bucket_count - The number of hash buckets in the hash lookup | |
4876 | table. */ | |
4877 | map.bucket_count = read_4_bytes (abfd, addr); | |
4878 | addr += 4; | |
4879 | ||
4880 | /* name_count - The number of unique names in the index. */ | |
4881 | map.name_count = read_4_bytes (abfd, addr); | |
4882 | addr += 4; | |
4883 | ||
4884 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4885 | table. */ | |
4886 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4887 | addr += 4; | |
4888 | ||
4889 | /* augmentation_string_size - The size in bytes of the augmentation | |
4890 | string. This value is rounded up to a multiple of 4. */ | |
4891 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4892 | addr += 4; | |
4893 | map.augmentation_is_gdb = ((augmentation_string_size | |
4894 | == sizeof (dwarf5_augmentation)) | |
4895 | && memcmp (addr, dwarf5_augmentation, | |
4896 | sizeof (dwarf5_augmentation)) == 0); | |
4897 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4898 | addr += augmentation_string_size; | |
4899 | ||
4900 | /* List of CUs */ | |
4901 | map.cu_table_reordered = addr; | |
4902 | addr += map.cu_count * map.offset_size; | |
4903 | ||
4904 | /* List of Local TUs */ | |
4905 | map.tu_table_reordered = addr; | |
4906 | addr += map.tu_count * map.offset_size; | |
4907 | ||
4908 | /* Hash Lookup Table */ | |
4909 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4910 | addr += map.bucket_count * 4; | |
4911 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4912 | addr += map.name_count * 4; | |
4913 | ||
4914 | /* Name Table */ | |
4915 | map.name_table_string_offs_reordered = addr; | |
4916 | addr += map.name_count * map.offset_size; | |
4917 | map.name_table_entry_offs_reordered = addr; | |
4918 | addr += map.name_count * map.offset_size; | |
4919 | ||
4920 | const gdb_byte *abbrev_table_start = addr; | |
4921 | for (;;) | |
4922 | { | |
927aa2e7 JK |
4923 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4924 | addr += bytes_read; | |
4925 | if (index_num == 0) | |
4926 | break; | |
4927 | ||
4928 | const auto insertpair | |
4929 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4930 | if (!insertpair.second) | |
4931 | { | |
4932 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4933 | "ignoring .debug_names."), | |
4934 | filename, pulongest (index_num)); | |
4935 | return false; | |
4936 | } | |
4937 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4938 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4939 | addr += bytes_read; | |
4940 | ||
4941 | for (;;) | |
4942 | { | |
4943 | mapped_debug_names::index_val::attr attr; | |
4944 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4945 | addr += bytes_read; | |
4946 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4947 | addr += bytes_read; | |
4948 | if (attr.form == DW_FORM_implicit_const) | |
4949 | { | |
4950 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4951 | &bytes_read); | |
4952 | addr += bytes_read; | |
4953 | } | |
4954 | if (attr.dw_idx == 0 && attr.form == 0) | |
4955 | break; | |
4956 | indexval.attr_vec.push_back (std::move (attr)); | |
4957 | } | |
4958 | } | |
4959 | if (addr != abbrev_table_start + abbrev_table_size) | |
4960 | { | |
4961 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4962 | "of size %s vs. written as %u, ignoring .debug_names."), |
4963 | filename, plongest (addr - abbrev_table_start), | |
4964 | abbrev_table_size); | |
927aa2e7 JK |
4965 | return false; |
4966 | } | |
4967 | map.entry_pool = addr; | |
4968 | ||
4969 | return true; | |
4970 | } | |
4971 | ||
4972 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4973 | list. */ | |
4974 | ||
4975 | static void | |
168c9250 | 4976 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
4977 | const mapped_debug_names &map, |
4978 | dwarf2_section_info §ion, | |
b76e467d | 4979 | bool is_dwz) |
927aa2e7 | 4980 | { |
3ee6bb11 TV |
4981 | if (!map.augmentation_is_gdb) |
4982 | { | |
fc9a13fb TV |
4983 | for (uint32_t i = 0; i < map.cu_count; ++i) |
4984 | { | |
4985 | sect_offset sect_off | |
4986 | = (sect_offset) (extract_unsigned_integer | |
4987 | (map.cu_table_reordered + i * map.offset_size, | |
4988 | map.offset_size, | |
4989 | map.dwarf5_byte_order)); | |
4990 | /* We don't know the length of the CU, because the CU list in a | |
4991 | .debug_names index can be incomplete, so we can't use the start | |
4992 | of the next CU as end of this CU. We create the CUs here with | |
4993 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
4994 | actual length. */ | |
4995 | dwarf2_per_cu_data *per_cu | |
4996 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, | |
4997 | sect_off, 0); | |
4998 | per_bfd->all_comp_units.push_back (per_cu); | |
4999 | } | |
d3b54e63 | 5000 | return; |
3ee6bb11 TV |
5001 | } |
5002 | ||
927aa2e7 JK |
5003 | sect_offset sect_off_prev; |
5004 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5005 | { | |
5006 | sect_offset sect_off_next; | |
5007 | if (i < map.cu_count) | |
5008 | { | |
5009 | sect_off_next | |
5010 | = (sect_offset) (extract_unsigned_integer | |
5011 | (map.cu_table_reordered + i * map.offset_size, | |
5012 | map.offset_size, | |
5013 | map.dwarf5_byte_order)); | |
5014 | } | |
5015 | else | |
5016 | sect_off_next = (sect_offset) section.size; | |
5017 | if (i >= 1) | |
5018 | { | |
5019 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5020 | dwarf2_per_cu_data *per_cu |
168c9250 | 5021 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5022 | sect_off_prev, length); |
168c9250 | 5023 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5024 | } |
5025 | sect_off_prev = sect_off_next; | |
5026 | } | |
5027 | } | |
5028 | ||
5029 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5030 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5031 | |
5032 | static void | |
168c9250 | 5033 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5034 | const mapped_debug_names &map, |
5035 | const mapped_debug_names &dwz_map) | |
5036 | { | |
168c9250 SM |
5037 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5038 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5039 | |
168c9250 | 5040 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5041 | false /* is_dwz */); |
927aa2e7 JK |
5042 | |
5043 | if (dwz_map.cu_count == 0) | |
5044 | return; | |
5045 | ||
168c9250 SM |
5046 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5047 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5048 | true /* is_dwz */); |
927aa2e7 JK |
5049 | } |
5050 | ||
5051 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5052 | elements of all the CUs and return true. Otherwise, return false. */ | |
5053 | ||
5054 | static bool | |
976ca316 | 5055 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5056 | { |
fcf23d5b SM |
5057 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5058 | mapped_debug_names dwz_map; | |
976ca316 | 5059 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5060 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5061 | |
5062 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
bab287cd | 5063 | &per_bfd->debug_names, *map)) |
927aa2e7 JK |
5064 | return false; |
5065 | ||
5066 | /* Don't use the index if it's empty. */ | |
22ca247e | 5067 | if (map->name_count == 0) |
927aa2e7 JK |
5068 | return false; |
5069 | ||
5070 | /* If there is a .dwz file, read it so we can get its CU list as | |
5071 | well. */ | |
f8c41851 | 5072 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5073 | if (dwz != NULL) |
5074 | { | |
5075 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5076 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5077 | &dwz->debug_names, dwz_map)) |
5078 | { | |
5079 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5080 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5081 | return false; |
5082 | } | |
5083 | } | |
5084 | ||
f8c41851 | 5085 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5086 | |
22ca247e | 5087 | if (map->tu_count != 0) |
927aa2e7 JK |
5088 | { |
5089 | /* We can only handle a single .debug_types when we have an | |
5090 | index. */ | |
f8c41851 | 5091 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5092 | return false; |
5093 | ||
f8c41851 | 5094 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5095 | |
5096 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5097 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5098 | } |
5099 | ||
f8c41851 | 5100 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5101 | |
f8c41851 SM |
5102 | per_bfd->debug_names_table = std::move (map); |
5103 | per_bfd->using_index = 1; | |
5104 | per_bfd->quick_file_names_table = | |
bab287cd | 5105 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); |
927aa2e7 JK |
5106 | |
5107 | return true; | |
5108 | } | |
5109 | ||
927aa2e7 JK |
5110 | /* Type used to manage iterating over all CUs looking for a symbol for |
5111 | .debug_names. */ | |
5112 | ||
5113 | class dw2_debug_names_iterator | |
5114 | { | |
5115 | public: | |
927aa2e7 | 5116 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5117 | block_search_flags block_index, |
2b79f376 | 5118 | domain_enum domain, |
fcf23d5b | 5119 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5120 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5121 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5122 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5123 | {} |
5124 | ||
5125 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
03a8ea51 | 5126 | search_domain search, uint32_t namei, |
3bfa51a7 TT |
5127 | dwarf2_per_objfile *per_objfile, |
5128 | domain_enum domain = UNDEF_DOMAIN) | |
927aa2e7 | 5129 | : m_map (map), |
3bfa51a7 | 5130 | m_domain (domain), |
927aa2e7 | 5131 | m_search (search), |
fcf23d5b SM |
5132 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5133 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5134 | {} |
5135 | ||
3b00ef10 | 5136 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5137 | block_search_flags block_index, domain_enum domain, |
fcf23d5b | 5138 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5139 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5140 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5141 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5142 | {} |
5143 | ||
927aa2e7 JK |
5144 | /* Return the next matching CU or NULL if there are no more. */ |
5145 | dwarf2_per_cu_data *next (); | |
5146 | ||
5147 | private: | |
5148 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5149 | const char *name, |
5150 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5151 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5152 | uint32_t namei, |
5153 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5154 | |
5155 | /* The internalized form of .debug_names. */ | |
5156 | const mapped_debug_names &m_map; | |
5157 | ||
03a8ea51 TT |
5158 | /* Restrict the search to these blocks. */ |
5159 | block_search_flags m_block_index = (SEARCH_GLOBAL_BLOCK | |
5160 | | SEARCH_STATIC_BLOCK); | |
927aa2e7 JK |
5161 | |
5162 | /* The kind of symbol we're looking for. */ | |
5163 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5164 | const search_domain m_search = ALL_DOMAIN; | |
5165 | ||
5166 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5167 | not found. */ | |
5168 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5169 | |
5170 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5171 | }; |
5172 | ||
5173 | const char * | |
fcf23d5b | 5174 | mapped_debug_names::namei_to_name |
976ca316 | 5175 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5176 | { |
5177 | const ULONGEST namei_string_offs | |
5178 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5179 | + namei * offset_size), | |
5180 | offset_size, | |
5181 | dwarf5_byte_order); | |
976ca316 | 5182 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5183 | } |
5184 | ||
5185 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5186 | found, return pointer to its pool data. If NAME cannot be found, | |
5187 | return NULL. */ | |
5188 | ||
5189 | const gdb_byte * | |
5190 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5191 | (const mapped_debug_names &map, const char *name, |
5192 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5193 | { |
5194 | int (*cmp) (const char *, const char *); | |
5195 | ||
54ee4252 | 5196 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5197 | if (current_language->la_language == language_cplus |
5198 | || current_language->la_language == language_fortran | |
5199 | || current_language->la_language == language_d) | |
5200 | { | |
5201 | /* NAME is already canonical. Drop any qualifiers as | |
5202 | .debug_names does not contain any. */ | |
5203 | ||
5204 | if (strchr (name, '(') != NULL) | |
5205 | { | |
54ee4252 | 5206 | without_params = cp_remove_params (name); |
927aa2e7 | 5207 | if (without_params != NULL) |
54ee4252 | 5208 | name = without_params.get (); |
927aa2e7 JK |
5209 | } |
5210 | } | |
5211 | ||
5212 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5213 | ||
5214 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5215 | uint32_t namei | |
5216 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5217 | (map.bucket_table_reordered | |
5218 | + (full_hash % map.bucket_count)), 4, | |
5219 | map.dwarf5_byte_order); | |
5220 | if (namei == 0) | |
5221 | return NULL; | |
5222 | --namei; | |
5223 | if (namei >= map.name_count) | |
5224 | { | |
b98664d3 | 5225 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5226 | "[in module %s]"), |
5227 | namei, map.name_count, | |
fcf23d5b | 5228 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5229 | return NULL; |
5230 | } | |
5231 | ||
5232 | for (;;) | |
5233 | { | |
5234 | const uint32_t namei_full_hash | |
5235 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5236 | (map.hash_table_reordered + namei), 4, | |
5237 | map.dwarf5_byte_order); | |
5238 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5239 | return NULL; | |
5240 | ||
5241 | if (full_hash == namei_full_hash) | |
5242 | { | |
fcf23d5b | 5243 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5244 | |
5245 | #if 0 /* An expensive sanity check. */ | |
5246 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5247 | { | |
b98664d3 | 5248 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5249 | "[in module %s]"), |
5250 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5251 | return NULL; | |
5252 | } | |
5253 | #endif | |
5254 | ||
5255 | if (cmp (namei_string, name) == 0) | |
5256 | { | |
5257 | const ULONGEST namei_entry_offs | |
5258 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5259 | + namei * map.offset_size), | |
5260 | map.offset_size, map.dwarf5_byte_order); | |
5261 | return map.entry_pool + namei_entry_offs; | |
5262 | } | |
5263 | } | |
5264 | ||
5265 | ++namei; | |
5266 | if (namei >= map.name_count) | |
5267 | return NULL; | |
5268 | } | |
5269 | } | |
5270 | ||
5271 | const gdb_byte * | |
5272 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5273 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5274 | { |
5275 | if (namei >= map.name_count) | |
5276 | { | |
b98664d3 | 5277 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5278 | "[in module %s]"), |
5279 | namei, map.name_count, | |
fcf23d5b | 5280 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5281 | return NULL; |
5282 | } | |
5283 | ||
5284 | const ULONGEST namei_entry_offs | |
5285 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5286 | + namei * map.offset_size), | |
5287 | map.offset_size, map.dwarf5_byte_order); | |
5288 | return map.entry_pool + namei_entry_offs; | |
5289 | } | |
5290 | ||
5291 | /* See dw2_debug_names_iterator. */ | |
5292 | ||
5293 | dwarf2_per_cu_data * | |
5294 | dw2_debug_names_iterator::next () | |
5295 | { | |
5296 | if (m_addr == NULL) | |
5297 | return NULL; | |
5298 | ||
fcf23d5b SM |
5299 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5300 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5301 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5302 | |
5303 | again: | |
5304 | ||
5305 | unsigned int bytes_read; | |
5306 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5307 | m_addr += bytes_read; | |
5308 | if (abbrev == 0) | |
5309 | return NULL; | |
5310 | ||
5311 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5312 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5313 | { | |
b98664d3 | 5314 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5315 | "[in module %s]"), |
ed2dc618 | 5316 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5317 | return NULL; |
5318 | } | |
5319 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5320 | enum class symbol_linkage { |
5321 | unknown, | |
5322 | static_, | |
5323 | extern_, | |
23c13d42 | 5324 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5325 | dwarf2_per_cu_data *per_cu = NULL; |
5326 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5327 | { | |
5328 | ULONGEST ull; | |
5329 | switch (attr.form) | |
5330 | { | |
5331 | case DW_FORM_implicit_const: | |
5332 | ull = attr.implicit_const; | |
5333 | break; | |
5334 | case DW_FORM_flag_present: | |
5335 | ull = 1; | |
5336 | break; | |
5337 | case DW_FORM_udata: | |
5338 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5339 | m_addr += bytes_read; | |
5340 | break; | |
6dc55ce9 | 5341 | case DW_FORM_ref4: |
5342 | ull = read_4_bytes (abfd, m_addr); | |
5343 | m_addr += 4; | |
5344 | break; | |
5345 | case DW_FORM_ref8: | |
5346 | ull = read_8_bytes (abfd, m_addr); | |
5347 | m_addr += 8; | |
5348 | break; | |
5349 | case DW_FORM_ref_sig8: | |
5350 | ull = read_8_bytes (abfd, m_addr); | |
5351 | m_addr += 8; | |
5352 | break; | |
927aa2e7 | 5353 | default: |
b98664d3 | 5354 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5355 | dwarf_form_name (attr.form), |
ed2dc618 | 5356 | objfile_name (objfile)); |
927aa2e7 JK |
5357 | return NULL; |
5358 | } | |
5359 | switch (attr.dw_idx) | |
5360 | { | |
5361 | case DW_IDX_compile_unit: | |
5362 | /* Don't crash on bad data. */ | |
bab287cd | 5363 | if (ull >= per_bfd->all_comp_units.size ()) |
927aa2e7 | 5364 | { |
b98664d3 | 5365 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5366 | " [in module %s]"), |
5367 | pulongest (ull), | |
fcf23d5b | 5368 | objfile_name (objfile)); |
927aa2e7 JK |
5369 | continue; |
5370 | } | |
fcf23d5b | 5371 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5372 | break; |
8af5c486 JK |
5373 | case DW_IDX_type_unit: |
5374 | /* Don't crash on bad data. */ | |
fcf23d5b | 5375 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5376 | { |
b98664d3 | 5377 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5378 | " [in module %s]"), |
5379 | pulongest (ull), | |
fcf23d5b | 5380 | objfile_name (objfile)); |
8af5c486 JK |
5381 | continue; |
5382 | } | |
fcf23d5b | 5383 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5384 | break; |
6dc55ce9 | 5385 | case DW_IDX_die_offset: |
5386 | /* In a per-CU index (as opposed to a per-module index), index | |
5387 | entries without CU attribute implicitly refer to the single CU. */ | |
5388 | if (per_cu == NULL) | |
fcf23d5b | 5389 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5390 | break; |
927aa2e7 JK |
5391 | case DW_IDX_GNU_internal: |
5392 | if (!m_map.augmentation_is_gdb) | |
5393 | break; | |
23c13d42 | 5394 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5395 | break; |
5396 | case DW_IDX_GNU_external: | |
5397 | if (!m_map.augmentation_is_gdb) | |
5398 | break; | |
23c13d42 | 5399 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5400 | break; |
5401 | } | |
5402 | } | |
5403 | ||
5404 | /* Skip if already read in. */ | |
fcf23d5b | 5405 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5406 | goto again; |
5407 | ||
5408 | /* Check static vs global. */ | |
03a8ea51 | 5409 | if (symbol_linkage_ != symbol_linkage::unknown) |
927aa2e7 | 5410 | { |
03a8ea51 TT |
5411 | if (symbol_linkage_ == symbol_linkage::static_) |
5412 | { | |
5413 | if ((m_block_index & SEARCH_STATIC_BLOCK) == 0) | |
5414 | goto again; | |
5415 | } | |
5416 | else | |
5417 | { | |
5418 | if ((m_block_index & SEARCH_GLOBAL_BLOCK) == 0) | |
5419 | goto again; | |
5420 | } | |
927aa2e7 JK |
5421 | } |
5422 | ||
5423 | /* Match dw2_symtab_iter_next, symbol_kind | |
5424 | and debug_names::psymbol_tag. */ | |
5425 | switch (m_domain) | |
5426 | { | |
5427 | case VAR_DOMAIN: | |
5428 | switch (indexval.dwarf_tag) | |
5429 | { | |
5430 | case DW_TAG_variable: | |
5431 | case DW_TAG_subprogram: | |
5432 | /* Some types are also in VAR_DOMAIN. */ | |
5433 | case DW_TAG_typedef: | |
5434 | case DW_TAG_structure_type: | |
5435 | break; | |
5436 | default: | |
5437 | goto again; | |
5438 | } | |
5439 | break; | |
5440 | case STRUCT_DOMAIN: | |
5441 | switch (indexval.dwarf_tag) | |
5442 | { | |
5443 | case DW_TAG_typedef: | |
5444 | case DW_TAG_structure_type: | |
5445 | break; | |
5446 | default: | |
5447 | goto again; | |
5448 | } | |
5449 | break; | |
5450 | case LABEL_DOMAIN: | |
5451 | switch (indexval.dwarf_tag) | |
5452 | { | |
5453 | case 0: | |
5454 | case DW_TAG_variable: | |
5455 | break; | |
5456 | default: | |
5457 | goto again; | |
5458 | } | |
5459 | break; | |
59c35742 AB |
5460 | case MODULE_DOMAIN: |
5461 | switch (indexval.dwarf_tag) | |
5462 | { | |
5463 | case DW_TAG_module: | |
5464 | break; | |
5465 | default: | |
5466 | goto again; | |
5467 | } | |
5468 | break; | |
927aa2e7 JK |
5469 | default: |
5470 | break; | |
5471 | } | |
5472 | ||
5473 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5474 | debug_names::psymbol_tag. */ | |
5475 | switch (m_search) | |
4b514bc8 | 5476 | { |
927aa2e7 JK |
5477 | case VARIABLES_DOMAIN: |
5478 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5479 | { |
927aa2e7 JK |
5480 | case DW_TAG_variable: |
5481 | break; | |
5482 | default: | |
5483 | goto again; | |
4b514bc8 | 5484 | } |
927aa2e7 JK |
5485 | break; |
5486 | case FUNCTIONS_DOMAIN: | |
5487 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5488 | { |
927aa2e7 JK |
5489 | case DW_TAG_subprogram: |
5490 | break; | |
5491 | default: | |
5492 | goto again; | |
4b514bc8 | 5493 | } |
927aa2e7 JK |
5494 | break; |
5495 | case TYPES_DOMAIN: | |
5496 | switch (indexval.dwarf_tag) | |
5497 | { | |
5498 | case DW_TAG_typedef: | |
5499 | case DW_TAG_structure_type: | |
5500 | break; | |
5501 | default: | |
5502 | goto again; | |
5503 | } | |
5504 | break; | |
59c35742 AB |
5505 | case MODULES_DOMAIN: |
5506 | switch (indexval.dwarf_tag) | |
5507 | { | |
5508 | case DW_TAG_module: | |
5509 | break; | |
5510 | default: | |
5511 | goto again; | |
5512 | } | |
927aa2e7 JK |
5513 | default: |
5514 | break; | |
4b514bc8 | 5515 | } |
927aa2e7 JK |
5516 | |
5517 | return per_cu; | |
4b514bc8 | 5518 | } |
61920122 | 5519 | |
927aa2e7 JK |
5520 | /* This dumps minimal information about .debug_names. It is called |
5521 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5522 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5523 | |
39298a5d TT |
5524 | void |
5525 | dwarf2_debug_names_index::dump (struct objfile *objfile) | |
927aa2e7 | 5526 | { |
976ca316 | 5527 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5528 | |
976ca316 | 5529 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5530 | printf_filtered (".debug_names:"); |
976ca316 | 5531 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5532 | printf_filtered (" exists\n"); |
5533 | else | |
5534 | printf_filtered (" faked for \"readnow\"\n"); | |
5535 | printf_filtered ("\n"); | |
9291a0cd TT |
5536 | } |
5537 | ||
39298a5d | 5538 | void |
0b7b2c2a | 5539 | dwarf2_debug_names_index::expand_matching_symbols |
3b00ef10 TT |
5540 | (struct objfile *objfile, |
5541 | const lookup_name_info &name, domain_enum domain, | |
5542 | int global, | |
3b00ef10 TT |
5543 | symbol_compare_ftype *ordered_compare) |
5544 | { | |
976ca316 | 5545 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5546 | |
5547 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5548 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5549 | return; |
5550 | ||
976ca316 | 5551 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
03a8ea51 TT |
5552 | const block_search_flags block_flags |
5553 | = global ? SEARCH_GLOBAL_BLOCK : SEARCH_STATIC_BLOCK; | |
3b00ef10 TT |
5554 | |
5555 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5556 | auto matcher = [&] (const char *symname) | |
5557 | { | |
5558 | if (ordered_compare == nullptr) | |
5559 | return true; | |
5560 | return ordered_compare (symname, match_name) == 0; | |
5561 | }; | |
5562 | ||
b64f703b | 5563 | dw2_expand_symtabs_matching_symbol (map, name, matcher, |
3b00ef10 TT |
5564 | [&] (offset_type namei) |
5565 | { | |
5566 | /* The name was matched, now expand corresponding CUs that were | |
5567 | marked. */ | |
03a8ea51 | 5568 | dw2_debug_names_iterator iter (map, block_flags, domain, namei, |
976ca316 | 5569 | per_objfile); |
3b00ef10 TT |
5570 | |
5571 | struct dwarf2_per_cu_data *per_cu; | |
5572 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5573 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5574 | nullptr); |
3b00ef10 | 5575 | return true; |
976ca316 | 5576 | }, per_objfile); |
3b00ef10 TT |
5577 | } |
5578 | ||
df35e626 | 5579 | bool |
39298a5d | 5580 | dwarf2_debug_names_index::expand_symtabs_matching |
927aa2e7 JK |
5581 | (struct objfile *objfile, |
5582 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5583 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5584 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5585 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 5586 | block_search_flags search_flags, |
3bfa51a7 | 5587 | domain_enum domain, |
927aa2e7 JK |
5588 | enum search_domain kind) |
5589 | { | |
976ca316 | 5590 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5591 | |
927aa2e7 | 5592 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5593 | if (!per_objfile->per_bfd->debug_names_table) |
df35e626 | 5594 | return true; |
9291a0cd | 5595 | |
976ca316 | 5596 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5597 | |
c1a66c06 TV |
5598 | if (symbol_matcher == NULL && lookup_name == NULL) |
5599 | { | |
976ca316 | 5600 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5601 | { |
5602 | QUIT; | |
5603 | ||
df35e626 TT |
5604 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
5605 | file_matcher, | |
5606 | expansion_notify)) | |
5607 | return false; | |
c1a66c06 | 5608 | } |
df35e626 | 5609 | return true; |
c1a66c06 TV |
5610 | } |
5611 | ||
976ca316 | 5612 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5613 | |
df35e626 TT |
5614 | bool result |
5615 | = dw2_expand_symtabs_matching_symbol (map, *lookup_name, | |
5616 | symbol_matcher, | |
5617 | [&] (offset_type namei) | |
927aa2e7 | 5618 | { |
927aa2e7 JK |
5619 | /* The name was matched, now expand corresponding CUs that were |
5620 | marked. */ | |
3bfa51a7 | 5621 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile, domain); |
bbf2f4df | 5622 | |
927aa2e7 JK |
5623 | struct dwarf2_per_cu_data *per_cu; |
5624 | while ((per_cu = iter.next ()) != NULL) | |
df35e626 TT |
5625 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
5626 | file_matcher, | |
5627 | expansion_notify)) | |
5628 | return false; | |
3b00ef10 | 5629 | return true; |
976ca316 | 5630 | }, per_objfile); |
df35e626 TT |
5631 | |
5632 | return result; | |
9291a0cd TT |
5633 | } |
5634 | ||
4485a1c1 | 5635 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5636 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5637 | |
5638 | template <typename T> | |
5639 | static gdb::array_view<const gdb_byte> | |
5640 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5641 | { | |
5642 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5643 | ||
96b79293 | 5644 | if (section->empty ()) |
4485a1c1 SM |
5645 | return {}; |
5646 | ||
5647 | /* Older elfutils strip versions could keep the section in the main | |
5648 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5649 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5650 | return {}; |
5651 | ||
96b79293 | 5652 | section->read (obj); |
4485a1c1 | 5653 | |
8bebfcda PA |
5654 | /* dwarf2_section_info::size is a bfd_size_type, while |
5655 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5656 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5657 | is 32-bit. So we need an explicit narrowing conversion here. | |
5658 | This is fine, because it's impossible to allocate or mmap an | |
5659 | array/buffer larger than what size_t can represent. */ | |
5660 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5661 | } |
5662 | ||
87d6a7aa SM |
5663 | /* Lookup the index cache for the contents of the index associated to |
5664 | DWARF2_OBJ. */ | |
5665 | ||
5666 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5667 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5668 | { |
5669 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5670 | if (build_id == nullptr) | |
5671 | return {}; | |
5672 | ||
5673 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5674 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5675 | } |
5676 | ||
5677 | /* Same as the above, but for DWZ. */ | |
5678 | ||
5679 | static gdb::array_view<const gdb_byte> | |
5680 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5681 | { | |
5682 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5683 | if (build_id == nullptr) | |
5684 | return {}; | |
5685 | ||
5686 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5687 | } | |
5688 | ||
edc02ceb | 5689 | /* See dwarf2/public.h. */ |
9291a0cd | 5690 | |
edc02ceb TT |
5691 | void |
5692 | dwarf2_initialize_objfile (struct objfile *objfile) | |
9291a0cd | 5693 | { |
976ca316 SM |
5694 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5695 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 5696 | |
850ed749 SM |
5697 | dwarf_read_debug_printf ("called"); |
5698 | ||
9291a0cd TT |
5699 | /* If we're about to read full symbols, don't bother with the |
5700 | indices. In this case we also don't care if some other debug | |
5701 | format is making psymtabs, because they are all about to be | |
5702 | expanded anyway. */ | |
5703 | if ((objfile->flags & OBJF_READNOW)) | |
5704 | { | |
850ed749 SM |
5705 | dwarf_read_debug_printf ("readnow requested"); |
5706 | ||
17ee85fc TT |
5707 | /* When using READNOW, the using_index flag (set below) indicates that |
5708 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5709 | if (per_bfd->using_index) | |
5710 | { | |
850ed749 | 5711 | dwarf_read_debug_printf ("using_index already set"); |
976ca316 | 5712 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5713 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5714 | return; | |
17ee85fc TT |
5715 | } |
5716 | ||
5717 | per_bfd->using_index = 1; | |
976ca316 SM |
5718 | create_all_comp_units (per_objfile); |
5719 | create_all_type_units (per_objfile); | |
17ee85fc TT |
5720 | per_bfd->quick_file_names_table |
5721 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 5722 | per_objfile->resize_symtabs (); |
9291a0cd | 5723 | |
17ee85fc TT |
5724 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
5725 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5726 | { |
17ee85fc | 5727 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 5728 | |
17ee85fc | 5729 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 5730 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5731 | } |
5732 | ||
edc02ceb TT |
5733 | /* Arrange for gdb to see the "quick" functions. However, these |
5734 | functions will be no-ops because we will have expanded all | |
5735 | symtabs. */ | |
5736 | objfile->qf.push_front (make_dwarf_gdb_index ()); | |
5737 | return; | |
9291a0cd TT |
5738 | } |
5739 | ||
17ee85fc TT |
5740 | /* Was a debug names index already read when we processed an objfile sharing |
5741 | PER_BFD? */ | |
5742 | if (per_bfd->debug_names_table != nullptr) | |
5743 | { | |
850ed749 | 5744 | dwarf_read_debug_printf ("re-using shared debug names table"); |
976ca316 | 5745 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5746 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5747 | return; | |
17ee85fc TT |
5748 | } |
5749 | ||
5750 | /* Was a GDB index already read when we processed an objfile sharing | |
5751 | PER_BFD? */ | |
5752 | if (per_bfd->index_table != nullptr) | |
5753 | { | |
850ed749 | 5754 | dwarf_read_debug_printf ("re-using shared index table"); |
976ca316 | 5755 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5756 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5757 | return; | |
17ee85fc TT |
5758 | } |
5759 | ||
efb763a5 SM |
5760 | /* There might already be partial symtabs built for this BFD. This happens |
5761 | when loading the same binary twice with the index-cache enabled. If so, | |
5762 | don't try to read an index. The objfile / per_objfile initialization will | |
5763 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
5764 | code path. */ | |
5765 | if (per_bfd->partial_symtabs != nullptr) | |
850ed749 SM |
5766 | { |
5767 | dwarf_read_debug_printf ("re-using shared partial symtabs"); | |
edc02ceb TT |
5768 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
5769 | return; | |
850ed749 | 5770 | } |
efb763a5 | 5771 | |
976ca316 | 5772 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a | 5773 | { |
850ed749 | 5774 | dwarf_read_debug_printf ("found debug names"); |
976ca316 | 5775 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5776 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5777 | return; | |
3c0aa29a | 5778 | } |
927aa2e7 | 5779 | |
976ca316 | 5780 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 5781 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5782 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a | 5783 | { |
850ed749 | 5784 | dwarf_read_debug_printf ("found gdb index from file"); |
976ca316 | 5785 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5786 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5787 | return; | |
3c0aa29a | 5788 | } |
9291a0cd | 5789 | |
87d6a7aa | 5790 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 5791 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
5792 | get_gdb_index_contents_from_cache, |
5793 | get_gdb_index_contents_from_cache_dwz)) | |
5794 | { | |
850ed749 | 5795 | dwarf_read_debug_printf ("found gdb index from cache"); |
87d6a7aa | 5796 | global_index_cache.hit (); |
976ca316 | 5797 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5798 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5799 | return; | |
87d6a7aa SM |
5800 | } |
5801 | ||
5802 | global_index_cache.miss (); | |
edc02ceb | 5803 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
9291a0cd TT |
5804 | } |
5805 | ||
5806 | \f | |
5807 | ||
dce234bc PP |
5808 | /* Build a partial symbol table. */ |
5809 | ||
5810 | void | |
eb36a3eb | 5811 | dwarf2_build_psymtabs (struct objfile *objfile, psymbol_functions *psf) |
dce234bc | 5812 | { |
976ca316 SM |
5813 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5814 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
5815 | |
5816 | if (per_bfd->partial_symtabs != nullptr) | |
5817 | { | |
5818 | /* Partial symbols were already read, so now we can simply | |
5819 | attach them. */ | |
eb36a3eb TT |
5820 | if (psf == nullptr) |
5821 | { | |
5822 | psf = new psymbol_functions (per_bfd->partial_symtabs); | |
5823 | objfile->qf.emplace_front (psf); | |
5824 | } | |
5825 | else | |
5826 | psf->set_partial_symtabs (per_bfd->partial_symtabs); | |
976ca316 | 5827 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5828 | return; |
5829 | } | |
c9bf0622 | 5830 | |
eb36a3eb TT |
5831 | if (psf == nullptr) |
5832 | { | |
5833 | psf = new psymbol_functions; | |
5834 | objfile->qf.emplace_front (psf); | |
5835 | } | |
5836 | const std::shared_ptr<psymtab_storage> &partial_symtabs | |
5837 | = psf->get_partial_symtabs (); | |
5838 | ||
51962708 TT |
5839 | /* Set the local reference to partial symtabs, so that we don't try |
5840 | to read them again if reading another objfile with the same BFD. | |
5841 | If we can't in fact share, this won't make a difference anyway as | |
5842 | the dwarf2_per_bfd object won't be shared. */ | |
eb36a3eb | 5843 | per_bfd->partial_symtabs = partial_symtabs; |
51962708 | 5844 | |
a70b8144 | 5845 | try |
c9bf0622 TT |
5846 | { |
5847 | /* This isn't really ideal: all the data we allocate on the | |
5848 | objfile's obstack is still uselessly kept around. However, | |
5849 | freeing it seems unsafe. */ | |
eb36a3eb | 5850 | psymtab_discarder psymtabs (partial_symtabs.get ()); |
976ca316 | 5851 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 5852 | psymtabs.keep (); |
87d6a7aa | 5853 | |
976ca316 | 5854 | per_objfile->resize_symtabs (); |
af758d11 | 5855 | |
87d6a7aa | 5856 | /* (maybe) store an index in the cache. */ |
976ca316 | 5857 | global_index_cache.store (per_objfile); |
c9bf0622 | 5858 | } |
230d2906 | 5859 | catch (const gdb_exception_error &except) |
492d29ea PA |
5860 | { |
5861 | exception_print (gdb_stderr, except); | |
5862 | } | |
c906108c | 5863 | } |
c906108c | 5864 | |
3b80fe9b DE |
5865 | /* Find the base address of the compilation unit for range lists and |
5866 | location lists. It will normally be specified by DW_AT_low_pc. | |
5867 | In DWARF-3 draft 4, the base address could be overridden by | |
5868 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5869 | compilation units with discontinuous ranges. */ | |
5870 | ||
5871 | static void | |
5872 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5873 | { | |
5874 | struct attribute *attr; | |
5875 | ||
2b24b6e4 | 5876 | cu->base_address.reset (); |
3b80fe9b DE |
5877 | |
5878 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5879 | if (attr != nullptr) |
95f982e5 | 5880 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5881 | else |
5882 | { | |
5883 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5884 | if (attr != nullptr) |
95f982e5 | 5885 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5886 | } |
5887 | } | |
5888 | ||
36586728 TT |
5889 | /* Helper function that returns the proper abbrev section for |
5890 | THIS_CU. */ | |
5891 | ||
5892 | static struct dwarf2_section_info * | |
5893 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5894 | { | |
5895 | struct dwarf2_section_info *abbrev; | |
c3699833 | 5896 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
5897 | |
5898 | if (this_cu->is_dwz) | |
a7308ce0 | 5899 | abbrev = &dwarf2_get_dwz_file (per_bfd, true)->abbrev; |
36586728 | 5900 | else |
c3699833 | 5901 | abbrev = &per_bfd->abbrev; |
36586728 TT |
5902 | |
5903 | return abbrev; | |
5904 | } | |
5905 | ||
f4dc4d17 DE |
5906 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5907 | ||
5908 | static sect_offset | |
976ca316 | 5909 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 5910 | struct dwarf2_section_info *section, |
9c541725 | 5911 | sect_offset sect_off) |
f4dc4d17 | 5912 | { |
96b79293 | 5913 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5914 | const gdb_byte *info_ptr; |
ac298888 | 5915 | unsigned int initial_length_size, offset_size; |
43988095 | 5916 | uint16_t version; |
f4dc4d17 | 5917 | |
976ca316 | 5918 | section->read (per_objfile->objfile); |
9c541725 | 5919 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5920 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5921 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5922 | info_ptr += initial_length_size; |
5923 | ||
5924 | version = read_2_bytes (abfd, info_ptr); | |
5925 | info_ptr += 2; | |
5926 | if (version >= 5) | |
5927 | { | |
5928 | /* Skip unit type and address size. */ | |
5929 | info_ptr += 2; | |
5930 | } | |
5931 | ||
24aa364d | 5932 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5933 | } |
5934 | ||
b83470bf TT |
5935 | /* A partial symtab that is used only for include files. */ |
5936 | struct dwarf2_include_psymtab : public partial_symtab | |
5937 | { | |
7b249e47 TT |
5938 | dwarf2_include_psymtab (const char *filename, |
5939 | psymtab_storage *partial_symtabs, | |
0072c873 SM |
5940 | objfile_per_bfd_storage *objfile_per_bfd) |
5941 | : partial_symtab (filename, partial_symtabs, objfile_per_bfd) | |
b83470bf TT |
5942 | { |
5943 | } | |
5944 | ||
5945 | void read_symtab (struct objfile *objfile) override | |
5946 | { | |
194d088f TV |
5947 | /* It's an include file, no symbols to read for it. |
5948 | Everything is in the includer symtab. */ | |
5949 | ||
5950 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
5951 | expansion of the includer psymtab. We use the dependencies[0] field to | |
5952 | model the includer. But if we go the regular route of calling | |
5953 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
5954 | to expand the includer, we'll only use expand_psymtab on the includer | |
5955 | (making it a non-toplevel psymtab), while if we expand the includer via | |
5956 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
5957 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
5958 | psymtab, and trigger read_symtab on the includer here directly. */ | |
5959 | includer ()->read_symtab (objfile); | |
b83470bf TT |
5960 | } |
5961 | ||
5962 | void expand_psymtab (struct objfile *objfile) override | |
5963 | { | |
194d088f TV |
5964 | /* This is not called by read_symtab, and should not be called by any |
5965 | expand_dependencies. */ | |
5966 | gdb_assert (false); | |
b83470bf TT |
5967 | } |
5968 | ||
5717c425 | 5969 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 5970 | { |
5717c425 | 5971 | return includer ()->readin_p (objfile); |
b83470bf TT |
5972 | } |
5973 | ||
5717c425 | 5974 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
5975 | { |
5976 | return nullptr; | |
5977 | } | |
5978 | ||
5979 | private: | |
194d088f TV |
5980 | partial_symtab *includer () const |
5981 | { | |
5982 | /* An include psymtab has exactly one dependency: the psymtab that | |
5983 | includes it. */ | |
5984 | gdb_assert (this->number_of_dependencies == 1); | |
5985 | return this->dependencies[0]; | |
5986 | } | |
b83470bf TT |
5987 | }; |
5988 | ||
aaa75496 JB |
5989 | /* Allocate a new partial symtab for file named NAME and mark this new |
5990 | partial symtab as being an include of PST. */ | |
5991 | ||
5992 | static void | |
84685904 | 5993 | dwarf2_create_include_psymtab (dwarf2_per_bfd *per_bfd, |
7b249e47 TT |
5994 | const char *name, |
5995 | dwarf2_psymtab *pst, | |
5996 | psymtab_storage *partial_symtabs, | |
0072c873 | 5997 | objfile_per_bfd_storage *objfile_per_bfd) |
aaa75496 | 5998 | { |
7b249e47 | 5999 | dwarf2_include_psymtab *subpst |
0072c873 | 6000 | = new dwarf2_include_psymtab (name, partial_symtabs, objfile_per_bfd); |
aaa75496 | 6001 | |
fbd9ab74 | 6002 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6003 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6004 | |
84685904 | 6005 | subpst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6006 | subpst->dependencies[0] = pst; |
6007 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6008 | } |
6009 | ||
6010 | /* Read the Line Number Program data and extract the list of files | |
6011 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6012 | partial symtab for each of these included files. */ |
aaa75496 JB |
6013 | |
6014 | static void | |
6015 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6016 | struct die_info *die, |
891813be | 6017 | dwarf2_psymtab *pst) |
aaa75496 | 6018 | { |
fff8551c | 6019 | line_header_up lh; |
d85a05f0 | 6020 | struct attribute *attr; |
aaa75496 | 6021 | |
d85a05f0 | 6022 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6023 | if (attr != nullptr && attr->form_is_unsigned ()) |
6024 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6025 | if (lh == NULL) |
6026 | return; /* No linetable, so no includes. */ | |
6027 | ||
79748972 TT |
6028 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6029 | that we pass in the raw text_low here; that is ok because we're | |
6030 | only decoding the line table to make include partial symtabs, and | |
6031 | so the addresses aren't really used. */ | |
4ae976d1 | 6032 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6033 | pst->raw_text_low (), 1); |
aaa75496 JB |
6034 | } |
6035 | ||
348e048f | 6036 | static hashval_t |
52dc124a | 6037 | hash_signatured_type (const void *item) |
348e048f | 6038 | { |
9a3c8263 SM |
6039 | const struct signatured_type *sig_type |
6040 | = (const struct signatured_type *) item; | |
9a619af0 | 6041 | |
348e048f | 6042 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6043 | return sig_type->signature; |
348e048f DE |
6044 | } |
6045 | ||
6046 | static int | |
52dc124a | 6047 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6048 | { |
9a3c8263 SM |
6049 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6050 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6051 | |
348e048f DE |
6052 | return lhs->signature == rhs->signature; |
6053 | } | |
6054 | ||
1fd400ff TT |
6055 | /* Allocate a hash table for signatured types. */ |
6056 | ||
b0b6a987 | 6057 | static htab_up |
298e9637 | 6058 | allocate_signatured_type_table () |
1fd400ff | 6059 | { |
b0b6a987 TT |
6060 | return htab_up (htab_create_alloc (41, |
6061 | hash_signatured_type, | |
6062 | eq_signatured_type, | |
6063 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6064 | } |
6065 | ||
d467dd73 | 6066 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6067 | |
6068 | static int | |
d467dd73 | 6069 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6070 | { |
9a3c8263 | 6071 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6072 | std::vector<signatured_type *> *all_type_units |
6073 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6074 | |
b2bdb8cf | 6075 | all_type_units->push_back (sigt); |
1fd400ff TT |
6076 | |
6077 | return 1; | |
6078 | } | |
6079 | ||
78d4d2c5 | 6080 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6081 | and fill them into TYPES_HTAB. It will process only type units, |
6082 | therefore DW_UT_type. */ | |
c88ee1f0 | 6083 | |
78d4d2c5 | 6084 | static void |
976ca316 | 6085 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6086 | struct dwo_file *dwo_file, |
b0b6a987 | 6087 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6088 | rcuh_kind section_kind) |
348e048f | 6089 | { |
976ca316 | 6090 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6091 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6092 | bfd *abfd; |
6093 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6094 | |
4bdcc0c1 DE |
6095 | abbrev_section = (dwo_file != NULL |
6096 | ? &dwo_file->sections.abbrev | |
976ca316 | 6097 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6098 | |
4800761a | 6099 | dwarf_read_debug_printf ("Reading %s for %s", |
6f738b01 SM |
6100 | section->get_name (), |
6101 | abbrev_section->get_file_name ()); | |
09406207 | 6102 | |
96b79293 | 6103 | section->read (objfile); |
78d4d2c5 | 6104 | info_ptr = section->buffer; |
348e048f | 6105 | |
78d4d2c5 JK |
6106 | if (info_ptr == NULL) |
6107 | return; | |
348e048f | 6108 | |
78d4d2c5 JK |
6109 | /* We can't set abfd until now because the section may be empty or |
6110 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6111 | abfd = section->get_bfd_owner (); |
348e048f | 6112 | |
c0ab21c2 TT |
6113 | /* We don't use cutu_reader here because we don't need to read |
6114 | any dies: the signature is in the header. */ | |
3019eac3 | 6115 | |
78d4d2c5 JK |
6116 | end_ptr = info_ptr + section->size; |
6117 | while (info_ptr < end_ptr) | |
6118 | { | |
78d4d2c5 JK |
6119 | struct signatured_type *sig_type; |
6120 | struct dwo_unit *dwo_tu; | |
6121 | void **slot; | |
6122 | const gdb_byte *ptr = info_ptr; | |
6123 | struct comp_unit_head header; | |
6124 | unsigned int length; | |
8b70b953 | 6125 | |
9c541725 | 6126 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6127 | |
a49dd8dd JK |
6128 | /* Initialize it due to a false compiler warning. */ |
6129 | header.signature = -1; | |
9c541725 | 6130 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6131 | |
78d4d2c5 JK |
6132 | /* We need to read the type's signature in order to build the hash |
6133 | table, but we don't need anything else just yet. */ | |
348e048f | 6134 | |
976ca316 | 6135 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6136 | abbrev_section, ptr, section_kind); |
348e048f | 6137 | |
4057dfde | 6138 | length = header.get_length (); |
6caca83c | 6139 | |
78d4d2c5 JK |
6140 | /* Skip dummy type units. */ |
6141 | if (ptr >= info_ptr + length | |
43988095 | 6142 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6143 | || (header.unit_type != DW_UT_type |
6144 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6145 | { |
6146 | info_ptr += length; | |
6147 | continue; | |
6148 | } | |
dee91e82 | 6149 | |
78d4d2c5 JK |
6150 | if (types_htab == NULL) |
6151 | { | |
6152 | if (dwo_file) | |
298e9637 | 6153 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6154 | else |
298e9637 | 6155 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6156 | } |
8b70b953 | 6157 | |
78d4d2c5 JK |
6158 | if (dwo_file) |
6159 | { | |
6160 | sig_type = NULL; | |
976ca316 | 6161 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6162 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6163 | dwo_tu->signature = header.signature; |
9c541725 | 6164 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6165 | dwo_tu->section = section; |
9c541725 | 6166 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6167 | dwo_tu->length = length; |
6168 | } | |
6169 | else | |
6170 | { | |
6171 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6172 | The real type_offset is in the DWO file. */ | |
6173 | dwo_tu = NULL; | |
976ca316 | 6174 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6175 | sig_type->signature = header.signature; |
9c541725 | 6176 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6177 | sig_type->per_cu.is_debug_types = 1; |
6178 | sig_type->per_cu.section = section; | |
9c541725 | 6179 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6180 | sig_type->per_cu.length = length; |
6181 | } | |
6182 | ||
b0b6a987 | 6183 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6184 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6185 | INSERT); | |
6186 | gdb_assert (slot != NULL); | |
6187 | if (*slot != NULL) | |
6188 | { | |
9c541725 | 6189 | sect_offset dup_sect_off; |
0349ea22 | 6190 | |
3019eac3 DE |
6191 | if (dwo_file) |
6192 | { | |
78d4d2c5 JK |
6193 | const struct dwo_unit *dup_tu |
6194 | = (const struct dwo_unit *) *slot; | |
6195 | ||
9c541725 | 6196 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6197 | } |
6198 | else | |
6199 | { | |
78d4d2c5 JK |
6200 | const struct signatured_type *dup_tu |
6201 | = (const struct signatured_type *) *slot; | |
6202 | ||
9c541725 | 6203 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6204 | } |
8b70b953 | 6205 | |
b98664d3 | 6206 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6207 | " the entry at offset %s, signature %s"), |
6208 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6209 | hex_string (header.signature)); |
78d4d2c5 JK |
6210 | } |
6211 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6212 | |
6f738b01 SM |
6213 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6214 | sect_offset_str (sect_off), | |
6215 | hex_string (header.signature)); | |
3019eac3 | 6216 | |
78d4d2c5 JK |
6217 | info_ptr += length; |
6218 | } | |
6219 | } | |
3019eac3 | 6220 | |
78d4d2c5 JK |
6221 | /* Create the hash table of all entries in the .debug_types |
6222 | (or .debug_types.dwo) section(s). | |
6223 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6224 | otherwise it is NULL. | |
b3c8eb43 | 6225 | |
78d4d2c5 | 6226 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6227 | |
78d4d2c5 | 6228 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6229 | |
78d4d2c5 | 6230 | static void |
976ca316 | 6231 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6232 | struct dwo_file *dwo_file, |
fd5866f6 | 6233 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6234 | htab_up &types_htab) |
78d4d2c5 | 6235 | { |
fd5866f6 | 6236 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6237 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6238 | rcuh_kind::TYPE); | |
3019eac3 DE |
6239 | } |
6240 | ||
6241 | /* Create the hash table of all entries in the .debug_types section, | |
6242 | and initialize all_type_units. | |
6243 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6244 | otherwise non-zero. */ | |
6245 | ||
6246 | static int | |
976ca316 | 6247 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6248 | { |
b0b6a987 | 6249 | htab_up types_htab; |
3019eac3 | 6250 | |
976ca316 SM |
6251 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6252 | types_htab, rcuh_kind::COMPILE); | |
6253 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6254 | types_htab); | |
3019eac3 DE |
6255 | if (types_htab == NULL) |
6256 | { | |
976ca316 | 6257 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6258 | return 0; |
6259 | } | |
6260 | ||
976ca316 | 6261 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6262 | |
976ca316 SM |
6263 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6264 | per_objfile->per_bfd->all_type_units.reserve | |
6265 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6266 | |
976ca316 | 6267 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6268 | add_signatured_type_cu_to_table, |
976ca316 | 6269 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6270 | |
348e048f DE |
6271 | return 1; |
6272 | } | |
6273 | ||
5989a64e | 6274 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6275 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6276 | Otherwise we find one. */ | |
6277 | ||
6278 | static struct signatured_type * | |
976ca316 | 6279 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6280 | { |
976ca316 SM |
6281 | if (per_objfile->per_bfd->all_type_units.size () |
6282 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6283 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6284 | |
976ca316 | 6285 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6286 | |
976ca316 | 6287 | per_objfile->resize_symtabs (); |
af758d11 | 6288 | |
976ca316 | 6289 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6290 | sig_type->signature = sig; |
6291 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6292 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6293 | { |
6294 | sig_type->per_cu.v.quick = | |
976ca316 | 6295 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6296 | struct dwarf2_per_cu_quick_data); |
6297 | } | |
6298 | ||
6299 | if (slot == NULL) | |
6300 | { | |
976ca316 | 6301 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6302 | sig_type, INSERT); |
6303 | } | |
6304 | gdb_assert (*slot == NULL); | |
6305 | *slot = sig_type; | |
6306 | /* The rest of sig_type must be filled in by the caller. */ | |
6307 | return sig_type; | |
6308 | } | |
6309 | ||
a2ce51a0 DE |
6310 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6311 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6312 | ||
6313 | static void | |
976ca316 | 6314 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6315 | struct signatured_type *sig_entry, |
6316 | struct dwo_unit *dwo_entry) | |
6317 | { | |
976ca316 | 6318 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6319 | |
7ee85ab1 | 6320 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6321 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6322 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6323 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6324 | { |
6325 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6326 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6327 | } |
6328 | else | |
6329 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6330 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6331 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6332 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6333 | gdb_assert (sig_entry->dwo_unit == NULL); |
6334 | ||
6335 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6336 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6337 | sig_entry->per_cu.length = dwo_entry->length; |
6338 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6339 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6340 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6341 | sig_entry->dwo_unit = dwo_entry; | |
6342 | } | |
6343 | ||
6344 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6345 | If we haven't read the TU yet, create the signatured_type data structure |
6346 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6347 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6348 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6349 | containing that CU. Otherwise we could end up reading several other DWO | |
6350 | files (due to comdat folding) to process the transitive closure of all the | |
6351 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6352 | type signature that it needs. | |
a2ce51a0 DE |
6353 | We only do this for .gdb_index because in the psymtab case we already have |
6354 | to read all the DWOs to build the type unit groups. */ | |
6355 | ||
6356 | static struct signatured_type * | |
6357 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6358 | { | |
976ca316 | 6359 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6360 | struct dwo_file *dwo_file; |
6361 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6362 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6363 | void **slot; |
a2ce51a0 | 6364 | |
976ca316 | 6365 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6366 | |
6aa5f3a6 DE |
6367 | /* If TU skeletons have been removed then we may not have read in any |
6368 | TUs yet. */ | |
976ca316 SM |
6369 | if (per_objfile->per_bfd->signatured_types == NULL) |
6370 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6371 | |
6372 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6373 | Use the global signatured_types array to do our own comdat-folding |
6374 | of types. If this is the first time we're reading this TU, and | |
6375 | the TU has an entry in .gdb_index, replace the recorded data from | |
6376 | .gdb_index with this TU. */ | |
a2ce51a0 | 6377 | |
a2ce51a0 | 6378 | find_sig_entry.signature = sig; |
976ca316 | 6379 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6380 | &find_sig_entry, INSERT); |
9a3c8263 | 6381 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6382 | |
6383 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6384 | read. Don't reassign the global entry to point to this DWO if that's |
6385 | the case. Also note that if the TU is already being read, it may not | |
6386 | have come from a DWO, the program may be a mix of Fission-compiled | |
6387 | code and non-Fission-compiled code. */ | |
6388 | ||
6389 | /* Have we already tried to read this TU? | |
6390 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6391 | needn't exist in the global table yet). */ | |
6392 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6393 | return sig_entry; |
6394 | ||
6aa5f3a6 DE |
6395 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6396 | dwo_unit of the TU itself. */ | |
6397 | dwo_file = cu->dwo_unit->dwo_file; | |
6398 | ||
a2ce51a0 DE |
6399 | /* Ok, this is the first time we're reading this TU. */ |
6400 | if (dwo_file->tus == NULL) | |
6401 | return NULL; | |
6402 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6403 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6404 | &find_dwo_entry); | |
a2ce51a0 DE |
6405 | if (dwo_entry == NULL) |
6406 | return NULL; | |
6407 | ||
6aa5f3a6 DE |
6408 | /* If the global table doesn't have an entry for this TU, add one. */ |
6409 | if (sig_entry == NULL) | |
976ca316 | 6410 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6411 | |
976ca316 | 6412 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6413 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6414 | return sig_entry; |
6415 | } | |
6416 | ||
a2ce51a0 DE |
6417 | /* Subroutine of lookup_signatured_type. |
6418 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6419 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6420 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6421 | |
6422 | static struct signatured_type * | |
6423 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6424 | { | |
976ca316 SM |
6425 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6426 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6427 | struct dwo_unit *dwo_entry; |
6428 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6429 | void **slot; |
a2ce51a0 | 6430 | |
976ca316 | 6431 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6432 | gdb_assert (dwp_file != NULL); |
6433 | ||
6aa5f3a6 DE |
6434 | /* If TU skeletons have been removed then we may not have read in any |
6435 | TUs yet. */ | |
976ca316 SM |
6436 | if (per_objfile->per_bfd->signatured_types == NULL) |
6437 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6438 | |
6aa5f3a6 | 6439 | find_sig_entry.signature = sig; |
976ca316 | 6440 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6441 | &find_sig_entry, INSERT); |
9a3c8263 | 6442 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6443 | |
6444 | /* Have we already tried to read this TU? | |
6445 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6446 | needn't exist in the global table yet). */ | |
6447 | if (sig_entry != NULL) | |
6448 | return sig_entry; | |
6449 | ||
a2ce51a0 DE |
6450 | if (dwp_file->tus == NULL) |
6451 | return NULL; | |
976ca316 SM |
6452 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6453 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6454 | if (dwo_entry == NULL) |
6455 | return NULL; | |
6456 | ||
976ca316 SM |
6457 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6458 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6459 | |
a2ce51a0 DE |
6460 | return sig_entry; |
6461 | } | |
6462 | ||
380bca97 | 6463 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6464 | Returns NULL if signature SIG is not present in the table. |
6465 | It is up to the caller to complain about this. */ | |
348e048f DE |
6466 | |
6467 | static struct signatured_type * | |
a2ce51a0 | 6468 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6469 | { |
976ca316 | 6470 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6471 | |
976ca316 | 6472 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6473 | { |
6474 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6475 | These cases require special processing. */ | |
976ca316 | 6476 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6477 | return lookup_dwo_signatured_type (cu, sig); |
6478 | else | |
6479 | return lookup_dwp_signatured_type (cu, sig); | |
6480 | } | |
6481 | else | |
6482 | { | |
6483 | struct signatured_type find_entry, *entry; | |
348e048f | 6484 | |
976ca316 | 6485 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6486 | return NULL; |
6487 | find_entry.signature = sig; | |
9a3c8263 | 6488 | entry = ((struct signatured_type *) |
976ca316 | 6489 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6490 | &find_entry)); |
a2ce51a0 DE |
6491 | return entry; |
6492 | } | |
348e048f | 6493 | } |
18a8505e | 6494 | |
42e7ad6c | 6495 | /* Low level DIE reading support. */ |
348e048f | 6496 | |
d85a05f0 DJ |
6497 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6498 | ||
6499 | static void | |
6500 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6501 | struct dwarf2_cu *cu, |
3019eac3 | 6502 | struct dwarf2_section_info *section, |
685af9cd TT |
6503 | struct dwo_file *dwo_file, |
6504 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6505 | { |
fceca515 | 6506 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6507 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6508 | reader->cu = cu; |
3019eac3 | 6509 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6510 | reader->die_section = section; |
6511 | reader->buffer = section->buffer; | |
f664829e | 6512 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6513 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6514 | } |
6515 | ||
c0ab21c2 | 6516 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6517 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6518 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6519 | already. |
6520 | ||
6521 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6522 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6523 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6524 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6525 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6526 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6527 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6528 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6529 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6530 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6531 | kept around for at least as long as *RESULT_READER. | |
6532 | ||
b0c7bfa9 DE |
6533 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6534 | ||
6535 | static int | |
4ab09049 | 6536 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6537 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6538 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6539 | const char *stub_comp_dir, |
b0c7bfa9 | 6540 | struct die_reader_specs *result_reader, |
d521ce57 | 6541 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6542 | struct die_info **result_comp_unit_die, |
685af9cd | 6543 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6544 | { |
976ca316 | 6545 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6546 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6547 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6548 | bfd *abfd; |
d521ce57 | 6549 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6550 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6551 | int i,num_extra_attrs; | |
6552 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6553 | struct die_info *comp_unit_die; |
6554 | ||
b0aeadb3 DE |
6555 | /* At most one of these may be provided. */ |
6556 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6557 | |
b0c7bfa9 DE |
6558 | /* These attributes aren't processed until later: |
6559 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6560 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6561 | referenced later. However, these attributes are found in the stub | |
6562 | which we won't have later. In order to not impose this complication | |
6563 | on the rest of the code, we read them here and copy them to the | |
6564 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6565 | |
6566 | stmt_list = NULL; | |
6567 | low_pc = NULL; | |
6568 | high_pc = NULL; | |
6569 | ranges = NULL; | |
6570 | comp_dir = NULL; | |
6571 | ||
6572 | if (stub_comp_unit_die != NULL) | |
6573 | { | |
6574 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6575 | DWO file. */ | |
4ab09049 | 6576 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6577 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6578 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6579 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6580 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6581 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6582 | ||
a39fdb41 | 6583 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6584 | |
2b0c7f41 SM |
6585 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
6586 | We need the value before we can process DW_AT_ranges values from the | |
6587 | DWO. */ | |
6588 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
6589 | ||
6590 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
6591 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
6592 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
6593 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
6594 | section. */ | |
6595 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 6596 | } |
a2ce51a0 DE |
6597 | else if (stub_comp_dir != NULL) |
6598 | { | |
6599 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6600 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6601 | comp_dir->name = DW_AT_comp_dir; |
6602 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6603 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6604 | } |
b0c7bfa9 DE |
6605 | |
6606 | /* Set up for reading the DWO CU/TU. */ | |
6607 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6608 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6609 | section->read (objfile); |
6610 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6611 | begin_info_ptr = info_ptr = (section->buffer |
6612 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6613 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6614 | |
4ab09049 | 6615 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6616 | { |
4ab09049 | 6617 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6618 | |
976ca316 SM |
6619 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6620 | section, dwo_abbrev_section, | |
43988095 | 6621 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6622 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6623 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6624 | { |
6625 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6626 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6627 | hex_string (sig_type->signature), |
43988095 | 6628 | hex_string (cu->header.signature), |
9d8780f0 | 6629 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6630 | bfd_get_filename (abfd)); |
6631 | } | |
9c541725 | 6632 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6633 | /* For DWOs coming from DWP files, we don't know the CU length |
6634 | nor the type's offset in the TU until now. */ | |
4057dfde | 6635 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6636 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6637 | |
6638 | /* Establish the type offset that can be used to lookup the type. | |
6639 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6640 | sig_type->type_offset_in_section |
6641 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6642 | } |
6643 | else | |
6644 | { | |
976ca316 SM |
6645 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6646 | section, dwo_abbrev_section, | |
43988095 | 6647 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6648 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6649 | /* For DWOs coming from DWP files, we don't know the CU length |
6650 | until now. */ | |
4057dfde | 6651 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6652 | } |
6653 | ||
606decb2 | 6654 | dwo_abbrev_section->read (objfile); |
685af9cd | 6655 | *result_dwo_abbrev_table |
606decb2 | 6656 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6657 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6658 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6659 | |
6660 | /* Read in the die, but leave space to copy over the attributes | |
6661 | from the stub. This has the benefit of simplifying the rest of | |
6662 | the code - all the work to maintain the illusion of a single | |
6663 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6664 | num_extra_attrs = ((stmt_list != NULL) | |
6665 | + (low_pc != NULL) | |
6666 | + (high_pc != NULL) | |
6667 | + (ranges != NULL) | |
6668 | + (comp_dir != NULL)); | |
6669 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6670 | num_extra_attrs); |
b0c7bfa9 DE |
6671 | |
6672 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6673 | comp_unit_die = *result_comp_unit_die; | |
6674 | i = comp_unit_die->num_attrs; | |
6675 | if (stmt_list != NULL) | |
6676 | comp_unit_die->attrs[i++] = *stmt_list; | |
6677 | if (low_pc != NULL) | |
6678 | comp_unit_die->attrs[i++] = *low_pc; | |
6679 | if (high_pc != NULL) | |
6680 | comp_unit_die->attrs[i++] = *high_pc; | |
6681 | if (ranges != NULL) | |
6682 | comp_unit_die->attrs[i++] = *ranges; | |
6683 | if (comp_dir != NULL) | |
6684 | comp_unit_die->attrs[i++] = *comp_dir; | |
6685 | comp_unit_die->num_attrs += num_extra_attrs; | |
6686 | ||
b4f54984 | 6687 | if (dwarf_die_debug) |
bf6af496 DE |
6688 | { |
6689 | fprintf_unfiltered (gdb_stdlog, | |
6690 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6691 | section->get_name (), |
bf6af496 DE |
6692 | (unsigned) (begin_info_ptr - section->buffer), |
6693 | bfd_get_filename (abfd)); | |
b4f54984 | 6694 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6695 | } |
6696 | ||
b0c7bfa9 DE |
6697 | /* Skip dummy compilation units. */ |
6698 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6699 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6700 | return 0; | |
6701 | ||
6702 | *result_info_ptr = info_ptr; | |
6703 | return 1; | |
6704 | } | |
6705 | ||
a084a2a6 AT |
6706 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6707 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6708 | signature is part of the header. */ | |
6709 | static gdb::optional<ULONGEST> | |
6710 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6711 | { | |
6712 | if (cu->header.version >= 5) | |
6713 | return cu->header.signature; | |
6714 | struct attribute *attr; | |
6715 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 6716 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 6717 | return gdb::optional<ULONGEST> (); |
529908cb | 6718 | return attr->as_unsigned (); |
a084a2a6 AT |
6719 | } |
6720 | ||
c0ab21c2 | 6721 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6722 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6723 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6724 | |
6725 | static struct dwo_unit * | |
4ab09049 | 6726 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6727 | { |
4ab09049 | 6728 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6729 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6730 | const char *comp_dir; |
b0c7bfa9 | 6731 | |
a2ce51a0 DE |
6732 | gdb_assert (cu != NULL); |
6733 | ||
b0c7bfa9 | 6734 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6735 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6736 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6737 | |
4ab09049 SM |
6738 | if (per_cu->is_debug_types) |
6739 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6740 | else |
6741 | { | |
a084a2a6 | 6742 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6743 | |
a084a2a6 | 6744 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6745 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6746 | " [in module %s]"), | |
4ab09049 SM |
6747 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6748 | ||
6749 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6750 | } |
6751 | ||
b0c7bfa9 DE |
6752 | return dwo_unit; |
6753 | } | |
6754 | ||
c0ab21c2 | 6755 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6756 | See it for a description of the parameters. |
fcd3b13d | 6757 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6758 | |
c0ab21c2 | 6759 | void |
9e021579 SM |
6760 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6761 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6762 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6763 | { |
a2ce51a0 | 6764 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6765 | |
6766 | /* Verify we can do the following downcast, and that we have the | |
6767 | data we need. */ | |
6768 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6769 | sig_type = (struct signatured_type *) this_cu; | |
6770 | gdb_assert (sig_type->dwo_unit != NULL); | |
6771 | ||
2e671100 SM |
6772 | dwarf2_cu *cu; |
6773 | ||
6774 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6775 | { |
2e671100 SM |
6776 | cu = existing_cu; |
6777 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6778 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6779 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6780 | } |
6781 | else | |
6782 | { | |
7188ed02 | 6783 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6784 | in per_objfile yet. */ |
7188ed02 | 6785 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 6786 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 6787 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
6788 | } |
6789 | ||
6790 | /* A future optimization, if needed, would be to use an existing | |
6791 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6792 | could share abbrev tables. */ | |
a2ce51a0 | 6793 | |
2e671100 | 6794 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6795 | NULL /* stub_comp_unit_die */, |
6796 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6797 | this, &info_ptr, |
3e225074 | 6798 | &comp_unit_die, |
c0ab21c2 | 6799 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6800 | { |
6801 | /* Dummy die. */ | |
c0ab21c2 | 6802 | dummy_p = true; |
a2ce51a0 | 6803 | } |
a2ce51a0 DE |
6804 | } |
6805 | ||
fd820528 | 6806 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6807 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6808 | |
f4dc4d17 DE |
6809 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6810 | Otherwise the table specified in the comp unit header is read in and used. | |
6811 | This is an optimization for when we already have the abbrev table. | |
6812 | ||
2e671100 SM |
6813 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
6814 | allocated. */ | |
aaa75496 | 6815 | |
ab432490 | 6816 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 6817 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 6818 | struct abbrev_table *abbrev_table, |
2e671100 | 6819 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
6820 | bool skip_partial) |
6821 | : die_reader_specs {}, | |
6751ebae | 6822 | m_this_cu (this_cu) |
c906108c | 6823 | { |
976ca316 | 6824 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 6825 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6826 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 6827 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6828 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6829 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6830 | /* Non-zero if CU currently points to a DWO file and we need to |
6831 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6832 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6833 | int rereading_dwo_cu = 0; |
c906108c | 6834 | |
b4f54984 | 6835 | if (dwarf_die_debug) |
9d8780f0 | 6836 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6837 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6838 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6839 | |
a2ce51a0 DE |
6840 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6841 | file (instead of going through the stub), short-circuit all of this. */ | |
6842 | if (this_cu->reading_dwo_directly) | |
6843 | { | |
6844 | /* Narrow down the scope of possibilities to have to understand. */ | |
6845 | gdb_assert (this_cu->is_debug_types); | |
6846 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 6847 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
6848 | return; |
6849 | } | |
6850 | ||
dee91e82 | 6851 | /* This is cheap if the section is already read in. */ |
96b79293 | 6852 | section->read (objfile); |
dee91e82 | 6853 | |
9c541725 | 6854 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6855 | |
6856 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 6857 | |
2e671100 SM |
6858 | dwarf2_cu *cu; |
6859 | ||
6860 | if (existing_cu != nullptr) | |
dee91e82 | 6861 | { |
2e671100 | 6862 | cu = existing_cu; |
42e7ad6c DE |
6863 | /* If this CU is from a DWO file we need to start over, we need to |
6864 | refetch the attributes from the skeleton CU. | |
6865 | This could be optimized by retrieving those attributes from when we | |
6866 | were here the first time: the previous comp_unit_die was stored in | |
6867 | comp_unit_obstack. But there's no data yet that we need this | |
6868 | optimization. */ | |
6869 | if (cu->dwo_unit != NULL) | |
6870 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6871 | } |
6872 | else | |
6873 | { | |
7188ed02 | 6874 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6875 | in per_objfile yet. */ |
976ca316 SM |
6876 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
6877 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 6878 | cu = m_new_cu.get (); |
42e7ad6c | 6879 | } |
dee91e82 | 6880 | |
b0c7bfa9 | 6881 | /* Get the header. */ |
9c541725 | 6882 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6883 | { |
6884 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6885 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6886 | } |
6887 | else | |
6888 | { | |
3019eac3 | 6889 | if (this_cu->is_debug_types) |
dee91e82 | 6890 | { |
976ca316 SM |
6891 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6892 | section, abbrev_section, | |
6893 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 6894 | |
42e7ad6c DE |
6895 | /* Since per_cu is the first member of struct signatured_type, |
6896 | we can go from a pointer to one to a pointer to the other. */ | |
6897 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6898 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6899 | gdb_assert (sig_type->type_offset_in_tu |
6900 | == cu->header.type_cu_offset_in_tu); | |
6901 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6902 | |
42e7ad6c DE |
6903 | /* LENGTH has not been set yet for type units if we're |
6904 | using .gdb_index. */ | |
4057dfde | 6905 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6906 | |
6907 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6908 | sig_type->type_offset_in_section = |
6909 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6910 | |
6911 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6912 | } |
6913 | else | |
6914 | { | |
976ca316 SM |
6915 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6916 | section, abbrev_section, | |
43988095 JK |
6917 | info_ptr, |
6918 | rcuh_kind::COMPILE); | |
dee91e82 | 6919 | |
9c541725 | 6920 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
6921 | if (this_cu->length == 0) |
6922 | this_cu->length = cu->header.get_length (); | |
6923 | else | |
6924 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 6925 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6926 | } |
6927 | } | |
10b3939b | 6928 | |
6caca83c | 6929 | /* Skip dummy compilation units. */ |
dee91e82 | 6930 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6931 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6932 | { |
6933 | dummy_p = true; | |
6934 | return; | |
6935 | } | |
6caca83c | 6936 | |
433df2d4 DE |
6937 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6938 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6939 | done. */ |
f4dc4d17 | 6940 | if (abbrev_table != NULL) |
685af9cd TT |
6941 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6942 | else | |
f4dc4d17 | 6943 | { |
606decb2 | 6944 | abbrev_section->read (objfile); |
c0ab21c2 | 6945 | m_abbrev_table_holder |
606decb2 | 6946 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 6947 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6948 | } |
af703f96 | 6949 | |
dee91e82 | 6950 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6951 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6952 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6953 | |
58f0c718 | 6954 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6955 | { |
6956 | dummy_p = true; | |
6957 | return; | |
6958 | } | |
58f0c718 | 6959 | |
b0c7bfa9 | 6960 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6961 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6962 | table from the DWO file and pass the ownership over to us. It will be | |
6963 | referenced from READER, so we must make sure to free it after we're done | |
6964 | with READER. | |
6965 | ||
b0c7bfa9 DE |
6966 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6967 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6968 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6969 | if (dwo_name != nullptr) |
3019eac3 | 6970 | { |
3019eac3 | 6971 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6972 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6973 | |
3e225074 | 6974 | if (comp_unit_die->has_children) |
6a506a2d | 6975 | { |
b98664d3 | 6976 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6977 | " has children (offset %s) [in module %s]"), |
6978 | sect_offset_str (this_cu->sect_off), | |
6979 | bfd_get_filename (abfd)); | |
6a506a2d | 6980 | } |
4ab09049 | 6981 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 6982 | if (dwo_unit != NULL) |
3019eac3 | 6983 | { |
4ab09049 | 6984 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 6985 | comp_unit_die, NULL, |
c0ab21c2 | 6986 | this, &info_ptr, |
3e225074 | 6987 | &dwo_comp_unit_die, |
c0ab21c2 | 6988 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6989 | { |
6990 | /* Dummy die. */ | |
c0ab21c2 | 6991 | dummy_p = true; |
6a506a2d DE |
6992 | return; |
6993 | } | |
6994 | comp_unit_die = dwo_comp_unit_die; | |
6995 | } | |
6996 | else | |
6997 | { | |
6998 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6999 | the stub. A complaint has already been logged. There's | |
7000 | not much more we can do except pass on the stub DIE to | |
7001 | die_reader_func. We don't want to throw an error on bad | |
7002 | debug info. */ | |
3019eac3 DE |
7003 | } |
7004 | } | |
c0ab21c2 | 7005 | } |
3019eac3 | 7006 | |
6751ebae TT |
7007 | void |
7008 | cutu_reader::keep () | |
c0ab21c2 | 7009 | { |
b0c7bfa9 | 7010 | /* Done, clean up. */ |
6751ebae TT |
7011 | gdb_assert (!dummy_p); |
7012 | if (m_new_cu != NULL) | |
348e048f | 7013 | { |
7188ed02 | 7014 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7015 | now. */ |
7188ed02 SM |
7016 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7017 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7018 | } |
dee91e82 DE |
7019 | } |
7020 | ||
18a8505e AT |
7021 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7022 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7023 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7024 | |
7025 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7026 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7027 | |
7028 | We fill in THIS_CU->length. | |
7029 | ||
dee91e82 | 7030 | THIS_CU->cu is always freed when done. |
3019eac3 | 7031 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7032 | to care whether it refers to the "main" CU or the DWO CU. |
7033 | ||
7034 | When parent_cu is passed, it is used to provide a default value for | |
7035 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7036 | |
ab432490 | 7037 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7038 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7039 | struct dwarf2_cu *parent_cu, |
7040 | struct dwo_file *dwo_file) | |
7041 | : die_reader_specs {}, | |
7042 | m_this_cu (this_cu) | |
dee91e82 | 7043 | { |
976ca316 | 7044 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7045 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7046 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7047 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7048 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7049 | |
b4f54984 | 7050 | if (dwarf_die_debug) |
9d8780f0 | 7051 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7052 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7053 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7054 | |
976ca316 | 7055 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7056 | |
33e80786 DE |
7057 | abbrev_section = (dwo_file != NULL |
7058 | ? &dwo_file->sections.abbrev | |
7059 | : get_abbrev_section_for_cu (this_cu)); | |
7060 | ||
dee91e82 | 7061 | /* This is cheap if the section is already read in. */ |
96b79293 | 7062 | section->read (objfile); |
dee91e82 | 7063 | |
976ca316 | 7064 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7065 | |
9c541725 | 7066 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7067 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7068 | section, abbrev_section, info_ptr, | |
43988095 JK |
7069 | (this_cu->is_debug_types |
7070 | ? rcuh_kind::TYPE | |
7071 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7072 | |
18a8505e AT |
7073 | if (parent_cu != nullptr) |
7074 | { | |
c0ab21c2 TT |
7075 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7076 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7077 | } |
4057dfde | 7078 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7079 | |
7080 | /* Skip dummy compilation units. */ | |
7081 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7082 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7083 | { |
7084 | dummy_p = true; | |
7085 | return; | |
7086 | } | |
72bf9492 | 7087 | |
606decb2 | 7088 | abbrev_section->read (objfile); |
c0ab21c2 | 7089 | m_abbrev_table_holder |
606decb2 | 7090 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7091 | |
c0ab21c2 TT |
7092 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7093 | m_abbrev_table_holder.get ()); | |
3e225074 | 7094 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7095 | } |
7096 | ||
0018ea6f DE |
7097 | \f |
7098 | /* Type Unit Groups. | |
dee91e82 | 7099 | |
0018ea6f DE |
7100 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7101 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7102 | so that all types coming from the same compilation (.o file) are grouped | |
7103 | together. A future step could be to put the types in the same symtab as | |
7104 | the CU the types ultimately came from. */ | |
ff013f42 | 7105 | |
f4dc4d17 DE |
7106 | static hashval_t |
7107 | hash_type_unit_group (const void *item) | |
7108 | { | |
9a3c8263 SM |
7109 | const struct type_unit_group *tu_group |
7110 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7111 | |
094b34ac | 7112 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7113 | } |
348e048f DE |
7114 | |
7115 | static int | |
f4dc4d17 | 7116 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7117 | { |
9a3c8263 SM |
7118 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7119 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7120 | |
094b34ac | 7121 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7122 | } |
348e048f | 7123 | |
f4dc4d17 DE |
7124 | /* Allocate a hash table for type unit groups. */ |
7125 | ||
eaa5fa8b | 7126 | static htab_up |
298e9637 | 7127 | allocate_type_unit_groups_table () |
f4dc4d17 | 7128 | { |
eaa5fa8b TT |
7129 | return htab_up (htab_create_alloc (3, |
7130 | hash_type_unit_group, | |
7131 | eq_type_unit_group, | |
7132 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7133 | } |
dee91e82 | 7134 | |
f4dc4d17 DE |
7135 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7136 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7137 | of any one psymtab grow too big. */ | |
7138 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7139 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7140 | |
094b34ac | 7141 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7142 | Create the type_unit_group object used to hold one or more TUs. */ |
7143 | ||
7144 | static struct type_unit_group * | |
094b34ac | 7145 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7146 | { |
976ca316 SM |
7147 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7148 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7149 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7150 | struct type_unit_group *tu_group; |
f4dc4d17 | 7151 | |
bab287cd | 7152 | tu_group = OBSTACK_ZALLOC (&per_bfd->obstack, type_unit_group); |
094b34ac | 7153 | per_cu = &tu_group->per_cu; |
1859c670 | 7154 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7155 | |
1859c670 | 7156 | if (per_bfd->using_index) |
094b34ac | 7157 | { |
1859c670 | 7158 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7159 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7160 | } |
7161 | else | |
7162 | { | |
9c541725 | 7163 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7164 | dwarf2_psymtab *pst; |
528e1572 | 7165 | std::string name; |
094b34ac DE |
7166 | |
7167 | /* Give the symtab a useful name for debug purposes. */ | |
7168 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7169 | name = string_printf ("<type_units_%d>", |
7170 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7171 | else |
528e1572 | 7172 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7173 | |
976ca316 | 7174 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7175 | pst->anonymous = true; |
094b34ac | 7176 | } |
f4dc4d17 | 7177 | |
094b34ac | 7178 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7179 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7180 | |
7181 | return tu_group; | |
7182 | } | |
7183 | ||
094b34ac DE |
7184 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7185 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7186 | |
7187 | static struct type_unit_group * | |
ff39bb5e | 7188 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7189 | { |
976ca316 SM |
7190 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7191 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7192 | struct type_unit_group *tu_group; |
7193 | void **slot; | |
7194 | unsigned int line_offset; | |
7195 | struct type_unit_group type_unit_group_for_lookup; | |
7196 | ||
976ca316 SM |
7197 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7198 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7199 | |
7200 | /* Do we need to create a new group, or can we use an existing one? */ | |
7201 | ||
529908cb | 7202 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7203 | { |
529908cb | 7204 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7205 | ++tu_stats->nr_symtab_sharers; |
7206 | } | |
7207 | else | |
7208 | { | |
7209 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7210 | We can do various things here like create one group per TU or | |
7211 | spread them over multiple groups to split up the expansion work. | |
7212 | To avoid worst case scenarios (too many groups or too large groups) | |
7213 | we, umm, group them in bunches. */ | |
7214 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7215 | | (tu_stats->nr_stmt_less_type_units | |
7216 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7217 | ++tu_stats->nr_stmt_less_type_units; | |
7218 | } | |
7219 | ||
094b34ac | 7220 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7221 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7222 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7223 | &type_unit_group_for_lookup, INSERT); |
7224 | if (*slot != NULL) | |
7225 | { | |
9a3c8263 | 7226 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7227 | gdb_assert (tu_group != NULL); |
7228 | } | |
7229 | else | |
7230 | { | |
9c541725 | 7231 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7232 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7233 | *slot = tu_group; |
7234 | ++tu_stats->nr_symtabs; | |
7235 | } | |
7236 | ||
7237 | return tu_group; | |
7238 | } | |
0018ea6f DE |
7239 | \f |
7240 | /* Partial symbol tables. */ | |
7241 | ||
7242 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7243 | ||
7244 | The caller must fill in the following details: | |
7245 | dirname, textlow, texthigh. */ | |
7246 | ||
891813be | 7247 | static dwarf2_psymtab * |
7aa104c4 SM |
7248 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7249 | dwarf2_per_objfile *per_objfile, | |
7250 | const char *name) | |
0018ea6f | 7251 | { |
0072c873 SM |
7252 | dwarf2_psymtab *pst |
7253 | = new dwarf2_psymtab (name, per_objfile->per_bfd->partial_symtabs.get (), | |
7254 | per_objfile->objfile->per_bfd, per_cu); | |
0018ea6f | 7255 | |
6d94535f | 7256 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7257 | |
7258 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7259 | per_cu->v.psymtab = pst; |
7260 | ||
7261 | return pst; | |
7262 | } | |
7263 | ||
c0ab21c2 | 7264 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7265 | |
7266 | static void | |
7267 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7268 | const gdb_byte *info_ptr, |
0018ea6f | 7269 | struct die_info *comp_unit_die, |
c0ab21c2 | 7270 | enum language pretend_language) |
0018ea6f DE |
7271 | { |
7272 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 | 7273 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
84685904 | 7274 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
7aa104c4 | 7275 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 7276 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7277 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7278 | CORE_ADDR baseaddr; |
7279 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7280 | dwarf2_psymtab *pst; |
3a2b436a | 7281 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7282 | const char *filename; |
0018ea6f | 7283 | |
0018ea6f DE |
7284 | gdb_assert (! per_cu->is_debug_types); |
7285 | ||
c0ab21c2 | 7286 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7287 | |
0018ea6f | 7288 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7289 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7290 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7291 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7292 | if (filename == NULL) | |
0018ea6f | 7293 | filename = ""; |
2e927613 TV |
7294 | else if (strcmp (filename, artificial) == 0) |
7295 | { | |
7296 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7297 | sect_offset_str (per_cu->sect_off), |
7298 | (char *) NULL)); | |
2e927613 TV |
7299 | filename = debug_filename.get (); |
7300 | } | |
0018ea6f | 7301 | |
7aa104c4 | 7302 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7303 | |
7304 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7305 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7306 | |
b3b3bada | 7307 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7308 | |
7309 | dwarf2_find_base_address (comp_unit_die, cu); | |
7310 | ||
7311 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7312 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7313 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7314 | &best_highpc, cu, pst); | |
7315 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7316 | { |
7317 | CORE_ADDR low | |
7318 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7319 | - baseaddr); | |
7320 | CORE_ADDR high | |
7321 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7322 | - baseaddr - 1); | |
7323 | /* Store the contiguous range if it is not empty; it can be | |
7324 | empty for CUs with no code. */ | |
84685904 | 7325 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 7326 | low, high, pst); |
79748972 | 7327 | } |
0018ea6f DE |
7328 | |
7329 | /* Check if comp unit has_children. | |
7330 | If so, read the rest of the partial symbols from this comp unit. | |
7331 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7332 | if (comp_unit_die->has_children) |
0018ea6f DE |
7333 | { |
7334 | struct partial_die_info *first_die; | |
7335 | CORE_ADDR lowpc, highpc; | |
7336 | ||
7337 | lowpc = ((CORE_ADDR) -1); | |
7338 | highpc = ((CORE_ADDR) 0); | |
7339 | ||
7340 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7341 | ||
7342 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7343 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7344 | |
7345 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7346 | complaints from `maint check'. */ | |
7347 | if (lowpc == ((CORE_ADDR) -1)) | |
7348 | lowpc = highpc; | |
7349 | ||
7350 | /* If the compilation unit didn't have an explicit address range, | |
7351 | then use the information extracted from its child dies. */ | |
e385593e | 7352 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7353 | { |
7354 | best_lowpc = lowpc; | |
7355 | best_highpc = highpc; | |
7356 | } | |
7357 | } | |
4ae976d1 | 7358 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7359 | best_lowpc + baseaddr) |
7360 | - baseaddr); | |
4ae976d1 | 7361 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7362 | best_highpc + baseaddr) |
7363 | - baseaddr); | |
0018ea6f | 7364 | |
ae7754b2 | 7365 | pst->end (); |
0018ea6f | 7366 | |
ae640021 | 7367 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7368 | { |
7369 | int i; | |
ae640021 | 7370 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7371 | |
7372 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7373 | post-pass. */ | |
7374 | pst->number_of_dependencies = len; | |
a9342b62 | 7375 | pst->dependencies |
84685904 | 7376 | = per_bfd->partial_symtabs->allocate_dependencies (len); |
ae640021 AB |
7377 | for (i = 0; i < len; ++i) |
7378 | { | |
7379 | pst->dependencies[i] | |
7380 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7381 | } | |
0018ea6f | 7382 | |
ae640021 | 7383 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7384 | } |
7385 | ||
7386 | /* Get the list of files included in the current compilation unit, | |
7387 | and build a psymtab for each of them. */ | |
7388 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7389 | ||
6f738b01 SM |
7390 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7391 | ", %d global, %d static syms", | |
7392 | per_cu->is_debug_types ? "type" : "comp", | |
7393 | sect_offset_str (per_cu->sect_off), | |
7394 | paddress (gdbarch, pst->text_low (objfile)), | |
7395 | paddress (gdbarch, pst->text_high (objfile)), | |
7396 | (int) pst->global_psymbols.size (), | |
7397 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7398 | } |
7399 | ||
7400 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7401 | Process compilation unit THIS_CU for a psymtab. */ | |
7402 | ||
7403 | static void | |
ab432490 SM |
7404 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7405 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7406 | bool want_partial_unit, |
b93601f3 | 7407 | enum language pretend_language) |
0018ea6f DE |
7408 | { |
7409 | /* If this compilation unit was already read in, free the | |
7410 | cached copy in order to read it in again. This is | |
7411 | necessary because we skipped some symbols when we first | |
7412 | read in the compilation unit (see load_partial_dies). | |
7413 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7414 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7415 | |
2e671100 | 7416 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7417 | |
58990295 TV |
7418 | switch (reader.comp_unit_die->tag) |
7419 | { | |
7420 | case DW_TAG_compile_unit: | |
7421 | this_cu->unit_type = DW_UT_compile; | |
7422 | break; | |
7423 | case DW_TAG_partial_unit: | |
7424 | this_cu->unit_type = DW_UT_partial; | |
7425 | break; | |
e77b0004 TV |
7426 | case DW_TAG_type_unit: |
7427 | this_cu->unit_type = DW_UT_type; | |
7428 | break; | |
58990295 | 7429 | default: |
702cf3f5 AB |
7430 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), |
7431 | dwarf_tag_name (reader.comp_unit_die->tag), | |
7432 | sect_offset_str (reader.cu->per_cu->sect_off), | |
7433 | objfile_name (per_objfile->objfile)); | |
58990295 TV |
7434 | } |
7435 | ||
c0ab21c2 | 7436 | if (reader.dummy_p) |
f1902523 | 7437 | { |
c0ab21c2 | 7438 | /* Nothing. */ |
f1902523 | 7439 | } |
c0ab21c2 | 7440 | else if (this_cu->is_debug_types) |
3e225074 TT |
7441 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7442 | reader.comp_unit_die); | |
135f5437 TT |
7443 | else if (want_partial_unit |
7444 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7445 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7446 | reader.comp_unit_die, | |
c0ab21c2 | 7447 | pretend_language); |
0018ea6f | 7448 | |
7188ed02 | 7449 | this_cu->lang = reader.cu->language; |
58990295 | 7450 | |
0018ea6f | 7451 | /* Age out any secondary CUs. */ |
7188ed02 | 7452 | per_objfile->age_comp_units (); |
0018ea6f | 7453 | } |
f4dc4d17 DE |
7454 | |
7455 | /* Reader function for build_type_psymtabs. */ | |
7456 | ||
7457 | static void | |
7458 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7459 | const gdb_byte *info_ptr, |
3e225074 | 7460 | struct die_info *type_unit_die) |
f4dc4d17 | 7461 | { |
976ca316 | 7462 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7463 | struct dwarf2_cu *cu = reader->cu; |
7464 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7465 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7466 | struct type_unit_group *tu_group; |
7467 | struct attribute *attr; | |
7468 | struct partial_die_info *first_die; | |
7469 | CORE_ADDR lowpc, highpc; | |
891813be | 7470 | dwarf2_psymtab *pst; |
f4dc4d17 | 7471 | |
0186c6a7 DE |
7472 | gdb_assert (per_cu->is_debug_types); |
7473 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7474 | |
3e225074 | 7475 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7476 | return; |
7477 | ||
052c8bb8 | 7478 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7479 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7480 | |
df07e2c7 | 7481 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7482 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7483 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7484 | |
7485 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7486 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7487 | pst->anonymous = true; |
f4dc4d17 DE |
7488 | |
7489 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7490 | ||
7491 | lowpc = (CORE_ADDR) -1; | |
7492 | highpc = (CORE_ADDR) 0; | |
7493 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7494 | ||
ae7754b2 | 7495 | pst->end (); |
f4dc4d17 DE |
7496 | } |
7497 | ||
73051182 DE |
7498 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7499 | ||
7500 | struct tu_abbrev_offset | |
7501 | { | |
b2bdb8cf SM |
7502 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7503 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7504 | {} | |
7505 | ||
7506 | signatured_type *sig_type; | |
73051182 DE |
7507 | sect_offset abbrev_offset; |
7508 | }; | |
7509 | ||
484cf504 | 7510 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7511 | |
484cf504 TT |
7512 | static bool |
7513 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7514 | const struct tu_abbrev_offset &b) | |
73051182 | 7515 | { |
484cf504 | 7516 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7517 | } |
7518 | ||
7519 | /* Efficiently read all the type units. | |
7520 | This does the bulk of the work for build_type_psymtabs. | |
7521 | ||
7522 | The efficiency is because we sort TUs by the abbrev table they use and | |
7523 | only read each abbrev table once. In one program there are 200K TUs | |
7524 | sharing 8K abbrev tables. | |
7525 | ||
7526 | The main purpose of this function is to support building the | |
5989a64e | 7527 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7528 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7529 | can collapse the search space by grouping them by stmt_list. | |
7530 | The savings can be significant, in the same program from above the 200K TUs | |
7531 | share 8K stmt_list tables. | |
7532 | ||
7533 | FUNC is expected to call get_type_unit_group, which will create the | |
7534 | struct type_unit_group if necessary and add it to | |
5989a64e | 7535 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7536 | |
7537 | static void | |
976ca316 | 7538 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7539 | { |
976ca316 | 7540 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7541 | abbrev_table_up abbrev_table; |
73051182 | 7542 | sect_offset abbrev_offset; |
73051182 DE |
7543 | |
7544 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7545 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7546 | |
976ca316 | 7547 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7548 | return; |
7549 | ||
7550 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7551 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7552 | read each abbrev table in. | |
7553 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7554 | This is simpler and efficient enough for now. | |
7555 | ||
7556 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7557 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7558 | stmt_list value too so in practice this should work well. | |
7559 | ||
7560 | The basic algorithm here is: | |
7561 | ||
7562 | sort TUs by abbrev table | |
7563 | for each TU with same abbrev table: | |
7564 | read abbrev table if first user | |
7565 | read TU top level DIE | |
7566 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7567 | call FUNC */ | |
7568 | ||
6f738b01 | 7569 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7570 | |
7571 | /* Sort in a separate table to maintain the order of all_type_units | |
7572 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7573 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7574 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7575 | |
976ca316 | 7576 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7577 | sorted_by_abbrev.emplace_back |
976ca316 | 7578 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7579 | sig_type->per_cu.sect_off)); |
73051182 | 7580 | |
484cf504 TT |
7581 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7582 | sort_tu_by_abbrev_offset); | |
73051182 | 7583 | |
9c541725 | 7584 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7585 | |
b2bdb8cf | 7586 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7587 | { |
73051182 DE |
7588 | /* Switch to the next abbrev table if necessary. */ |
7589 | if (abbrev_table == NULL | |
b2bdb8cf | 7590 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7591 | { |
b2bdb8cf | 7592 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7593 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7594 | abbrev_table = |
606decb2 | 7595 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7596 | ++tu_stats->nr_uniq_abbrev_tables; |
7597 | } | |
7598 | ||
976ca316 | 7599 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7600 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7601 | if (!reader.dummy_p) |
7602 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7603 | reader.comp_unit_die); |
73051182 | 7604 | } |
6aa5f3a6 | 7605 | } |
73051182 | 7606 | |
6aa5f3a6 DE |
7607 | /* Print collected type unit statistics. */ |
7608 | ||
7609 | static void | |
976ca316 | 7610 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7611 | { |
976ca316 | 7612 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7613 | |
6f738b01 SM |
7614 | dwarf_read_debug_printf ("Type unit statistics:"); |
7615 | dwarf_read_debug_printf (" %zu TUs", | |
7616 | per_objfile->per_bfd->all_type_units.size ()); | |
7617 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7618 | tu_stats->nr_uniq_abbrev_tables); | |
7619 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7620 | tu_stats->nr_symtabs); | |
7621 | dwarf_read_debug_printf (" %d symtab sharers", | |
7622 | tu_stats->nr_symtab_sharers); | |
7623 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7624 | tu_stats->nr_stmt_less_type_units); | |
7625 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7626 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7627 | } |
7628 | ||
f4dc4d17 DE |
7629 | /* Traversal function for build_type_psymtabs. */ |
7630 | ||
7631 | static int | |
7632 | build_type_psymtab_dependencies (void **slot, void *info) | |
7633 | { | |
976ca316 | 7634 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
84685904 | 7635 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
f4dc4d17 | 7636 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7637 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7638 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7639 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7640 | int i; |
7641 | ||
7642 | gdb_assert (len > 0); | |
197400e8 | 7643 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7644 | |
7645 | pst->number_of_dependencies = len; | |
84685904 | 7646 | pst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7647 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7648 | { |
df07e2c7 | 7649 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7650 | gdb_assert (iter->per_cu.is_debug_types); |
7651 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7652 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7653 | } |
7654 | ||
df07e2c7 AB |
7655 | delete tu_group->tus; |
7656 | tu_group->tus = nullptr; | |
348e048f DE |
7657 | |
7658 | return 1; | |
7659 | } | |
7660 | ||
7661 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7662 | Build partial symbol tables for the .debug_types comp-units. */ | |
7663 | ||
7664 | static void | |
976ca316 | 7665 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7666 | { |
976ca316 | 7667 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7668 | return; |
7669 | ||
976ca316 | 7670 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7671 | } |
f4dc4d17 | 7672 | |
6aa5f3a6 DE |
7673 | /* Traversal function for process_skeletonless_type_unit. |
7674 | Read a TU in a DWO file and build partial symbols for it. */ | |
7675 | ||
7676 | static int | |
7677 | process_skeletonless_type_unit (void **slot, void *info) | |
7678 | { | |
7679 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7680 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7681 | struct signatured_type find_entry, *entry; |
7682 | ||
7683 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7684 | ||
976ca316 SM |
7685 | if (per_objfile->per_bfd->signatured_types == NULL) |
7686 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7687 | |
7688 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7689 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7690 | &find_entry, INSERT); |
6aa5f3a6 DE |
7691 | /* If we've already seen this type there's nothing to do. What's happening |
7692 | is we're doing our own version of comdat-folding here. */ | |
7693 | if (*slot != NULL) | |
7694 | return 1; | |
7695 | ||
7696 | /* This does the job that create_all_type_units would have done for | |
7697 | this TU. */ | |
976ca316 SM |
7698 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7699 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7700 | *slot = entry; |
7701 | ||
7702 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7703 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7704 | if (!reader.dummy_p) |
7705 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7706 | reader.comp_unit_die); |
6aa5f3a6 DE |
7707 | |
7708 | return 1; | |
7709 | } | |
7710 | ||
7711 | /* Traversal function for process_skeletonless_type_units. */ | |
7712 | ||
7713 | static int | |
7714 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7715 | { | |
7716 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7717 | ||
7718 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7719 | htab_traverse_noresize (dwo_file->tus.get (), |
7720 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7721 | |
7722 | return 1; | |
7723 | } | |
7724 | ||
7725 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7726 | This is needed in case a TU was emitted without its skeleton. | |
7727 | Note: This can't be done until we know what all the DWO files are. */ | |
7728 | ||
7729 | static void | |
976ca316 | 7730 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
7731 | { |
7732 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
7733 | if (get_dwp_file (per_objfile) == NULL |
7734 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 7735 | { |
976ca316 | 7736 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7737 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 7738 | per_objfile); |
6aa5f3a6 | 7739 | } |
348e048f DE |
7740 | } |
7741 | ||
ed2dc618 | 7742 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7743 | |
7744 | static void | |
976ca316 | 7745 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 7746 | { |
976ca316 | 7747 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 7748 | { |
891813be | 7749 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7750 | |
36586728 TT |
7751 | if (pst == NULL) |
7752 | continue; | |
7753 | ||
b76e467d | 7754 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7755 | { |
7756 | /* Set the 'user' field only if it is not already set. */ | |
7757 | if (pst->dependencies[j]->user == NULL) | |
7758 | pst->dependencies[j]->user = pst; | |
7759 | } | |
7760 | } | |
7761 | } | |
7762 | ||
93311388 DE |
7763 | /* Build the partial symbol table by doing a quick pass through the |
7764 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7765 | |
93311388 | 7766 | static void |
976ca316 | 7767 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 7768 | { |
976ca316 | 7769 | struct objfile *objfile = per_objfile->objfile; |
84685904 | 7770 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
93311388 | 7771 | |
6f738b01 SM |
7772 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
7773 | objfile_name (objfile)); | |
45cfd468 | 7774 | |
76935768 | 7775 | scoped_restore restore_reading_psyms |
bab287cd | 7776 | = make_scoped_restore (&per_bfd->reading_partial_symbols, true); |
98bfdba5 | 7777 | |
84685904 | 7778 | per_bfd->info.read (objfile); |
91c24f0a | 7779 | |
93311388 DE |
7780 | /* Any cached compilation units will be linked by the per-objfile |
7781 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 7782 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 7783 | |
976ca316 | 7784 | build_type_psymtabs (per_objfile); |
348e048f | 7785 | |
976ca316 | 7786 | create_all_comp_units (per_objfile); |
c906108c | 7787 | |
60606b2c TT |
7788 | /* Create a temporary address map on a temporary obstack. We later |
7789 | copy this to the final obstack. */ | |
8268c778 | 7790 | auto_obstack temp_obstack; |
791afaa2 TT |
7791 | |
7792 | scoped_restore save_psymtabs_addrmap | |
84685904 | 7793 | = make_scoped_restore (&per_bfd->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7794 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7795 | |
84685904 | 7796 | for (dwarf2_per_cu_data *per_cu : per_bfd->all_comp_units) |
3d5afab3 TV |
7797 | { |
7798 | if (per_cu->v.psymtab != NULL) | |
7799 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7800 | continue; | |
976ca316 | 7801 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 7802 | language_minimal); |
3d5afab3 | 7803 | } |
ff013f42 | 7804 | |
6aa5f3a6 | 7805 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 7806 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
7807 | |
7808 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
84685904 | 7809 | if (per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7810 | { |
84685904 | 7811 | htab_traverse_noresize (per_bfd->type_unit_groups.get (), |
976ca316 | 7812 | build_type_psymtab_dependencies, per_objfile); |
6aa5f3a6 DE |
7813 | } |
7814 | ||
6f738b01 | 7815 | if (dwarf_read_debug > 0) |
976ca316 | 7816 | print_tu_stats (per_objfile); |
6aa5f3a6 | 7817 | |
976ca316 | 7818 | set_partial_user (per_objfile); |
95554aad | 7819 | |
84685904 TT |
7820 | per_bfd->partial_symtabs->psymtabs_addrmap |
7821 | = addrmap_create_fixed (per_bfd->partial_symtabs->psymtabs_addrmap, | |
7822 | per_bfd->partial_symtabs->obstack ()); | |
791afaa2 TT |
7823 | /* At this point we want to keep the address map. */ |
7824 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7825 | |
6f738b01 SM |
7826 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
7827 | objfile_name (objfile)); | |
ae038cb0 DJ |
7828 | } |
7829 | ||
dee91e82 DE |
7830 | /* Load the partial DIEs for a secondary CU into memory. |
7831 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7832 | |
dee91e82 | 7833 | static void |
ab432490 | 7834 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
7835 | dwarf2_per_objfile *per_objfile, |
7836 | dwarf2_cu *existing_cu) | |
dee91e82 | 7837 | { |
2e671100 | 7838 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
7839 | |
7840 | if (!reader.dummy_p) | |
7841 | { | |
7842 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7843 | language_minimal); | |
7844 | ||
7845 | /* Check if comp unit has_children. | |
7846 | If so, read the rest of the partial symbols from this comp unit. | |
7847 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7848 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7849 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7850 | |
7851 | reader.keep (); | |
c0ab21c2 | 7852 | } |
ae038cb0 DJ |
7853 | } |
7854 | ||
ae038cb0 | 7855 | static void |
976ca316 | 7856 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 7857 | struct dwarf2_section_info *section, |
f1902523 | 7858 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7859 | unsigned int is_dwz) |
ae038cb0 | 7860 | { |
d521ce57 | 7861 | const gdb_byte *info_ptr; |
976ca316 | 7862 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 7863 | |
6f738b01 SM |
7864 | dwarf_read_debug_printf ("Reading %s for %s", |
7865 | section->get_name (), | |
7866 | section->get_file_name ()); | |
bf6af496 | 7867 | |
96b79293 | 7868 | section->read (objfile); |
ae038cb0 | 7869 | |
36586728 | 7870 | info_ptr = section->buffer; |
6e70227d | 7871 | |
36586728 | 7872 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7873 | { |
ae038cb0 | 7874 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7875 | |
9c541725 | 7876 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7877 | |
f1902523 | 7878 | comp_unit_head cu_header; |
976ca316 | 7879 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
7880 | abbrev_section, info_ptr, |
7881 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7882 | |
7883 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 7884 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 7885 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
7886 | else |
7887 | { | |
976ca316 | 7888 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
7889 | sig_type->signature = cu_header.signature; |
7890 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7891 | this_cu = &sig_type->per_cu; | |
7892 | } | |
7893 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7894 | this_cu->sect_off = sect_off; |
f1902523 | 7895 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7896 | this_cu->is_dwz = is_dwz; |
8a0459fd | 7897 | this_cu->section = section; |
ae038cb0 | 7898 | |
976ca316 | 7899 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7900 | |
7901 | info_ptr = info_ptr + this_cu->length; | |
7902 | } | |
36586728 TT |
7903 | } |
7904 | ||
7905 | /* Create a list of all compilation units in OBJFILE. | |
7906 | This is only done for -readnow and building partial symtabs. */ | |
7907 | ||
7908 | static void | |
976ca316 | 7909 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 7910 | { |
976ca316 SM |
7911 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
7912 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
7913 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 7914 | |
976ca316 | 7915 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 7916 | if (dwz != NULL) |
976ca316 | 7917 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
7918 | } |
7919 | ||
5734ee8b | 7920 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7921 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7922 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7923 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7924 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7925 | |
72bf9492 DJ |
7926 | static void |
7927 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7928 | CORE_ADDR *highpc, int set_addrmap, |
7929 | struct dwarf2_cu *cu) | |
c906108c | 7930 | { |
72bf9492 | 7931 | struct partial_die_info *pdi; |
c906108c | 7932 | |
91c24f0a DC |
7933 | /* Now, march along the PDI's, descending into ones which have |
7934 | interesting children but skipping the children of the other ones, | |
7935 | until we reach the end of the compilation unit. */ | |
c906108c | 7936 | |
72bf9492 | 7937 | pdi = first_die; |
91c24f0a | 7938 | |
72bf9492 DJ |
7939 | while (pdi != NULL) |
7940 | { | |
52356b79 | 7941 | pdi->fixup (cu); |
c906108c | 7942 | |
f55ee35c | 7943 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7944 | children, so we need to look at them. Ditto for anonymous |
7945 | enums. */ | |
933c6fe4 | 7946 | |
7d00ffec | 7947 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7948 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7949 | || pdi->tag == DW_TAG_imported_unit |
7950 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7951 | { |
72bf9492 | 7952 | switch (pdi->tag) |
c906108c SS |
7953 | { |
7954 | case DW_TAG_subprogram: | |
b1dc1806 | 7955 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7956 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
7957 | if (cu->language == language_cplus) |
7958 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
7959 | set_addrmap, cu); | |
c906108c | 7960 | break; |
72929c62 | 7961 | case DW_TAG_constant: |
c906108c SS |
7962 | case DW_TAG_variable: |
7963 | case DW_TAG_typedef: | |
91c24f0a | 7964 | case DW_TAG_union_type: |
317d2668 TV |
7965 | if (!pdi->is_declaration |
7966 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 7967 | { |
72bf9492 | 7968 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7969 | } |
7970 | break; | |
c906108c | 7971 | case DW_TAG_class_type: |
680b30c7 | 7972 | case DW_TAG_interface_type: |
c906108c | 7973 | case DW_TAG_structure_type: |
72bf9492 | 7974 | if (!pdi->is_declaration) |
c906108c | 7975 | { |
72bf9492 | 7976 | add_partial_symbol (pdi, cu); |
c906108c | 7977 | } |
b7fee5a3 KS |
7978 | if ((cu->language == language_rust |
7979 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7980 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7981 | set_addrmap, cu); | |
c906108c | 7982 | break; |
91c24f0a | 7983 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7984 | if (!pdi->is_declaration) |
7985 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7986 | break; |
7987 | case DW_TAG_base_type: | |
dda83cd7 | 7988 | case DW_TAG_subrange_type: |
c906108c | 7989 | /* File scope base type definitions are added to the partial |
dda83cd7 | 7990 | symbol table. */ |
72bf9492 | 7991 | add_partial_symbol (pdi, cu); |
c906108c | 7992 | break; |
d9fa45fe | 7993 | case DW_TAG_namespace: |
cdc07690 | 7994 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7995 | break; |
5d7cb8df | 7996 | case DW_TAG_module: |
59c35742 AB |
7997 | if (!pdi->is_declaration) |
7998 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7999 | break; |
95554aad TT |
8000 | case DW_TAG_imported_unit: |
8001 | { | |
8002 | struct dwarf2_per_cu_data *per_cu; | |
8003 | ||
f4dc4d17 DE |
8004 | /* For now we don't handle imported units in type units. */ |
8005 | if (cu->per_cu->is_debug_types) | |
8006 | { | |
8007 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8008 | " supported in type units [in module %s]"), | |
5e22e966 | 8009 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8010 | } |
8011 | ||
e3b94546 | 8012 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8013 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8014 | |
8015 | /* Go read the partial unit, if needed. */ | |
8016 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8017 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8018 | cu->language); | |
95554aad | 8019 | |
ae640021 | 8020 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8021 | } |
8022 | break; | |
74921315 KS |
8023 | case DW_TAG_imported_declaration: |
8024 | add_partial_symbol (pdi, cu); | |
8025 | break; | |
c906108c SS |
8026 | default: |
8027 | break; | |
8028 | } | |
8029 | } | |
8030 | ||
72bf9492 DJ |
8031 | /* If the die has a sibling, skip to the sibling. */ |
8032 | ||
8033 | pdi = pdi->die_sibling; | |
8034 | } | |
8035 | } | |
8036 | ||
8037 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8038 | |
72bf9492 | 8039 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8040 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8041 | Enumerators are an exception; they use the scope of their parent |
8042 | enumeration type, i.e. the name of the enumeration type is not | |
8043 | prepended to the enumerator. | |
91c24f0a | 8044 | |
72bf9492 DJ |
8045 | There are two complexities. One is DW_AT_specification; in this |
8046 | case "parent" means the parent of the target of the specification, | |
8047 | instead of the direct parent of the DIE. The other is compilers | |
8048 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8049 | the fully qualified name of structure types from their members' | |
8050 | linkage names. This must be done using the DIE's children rather | |
8051 | than the children of any DW_AT_specification target. We only need | |
8052 | to do this for structures at the top level, i.e. if the target of | |
8053 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8054 | have a parent. */ | |
8055 | ||
8056 | /* Compute the scope prefix associated with PDI's parent, in | |
8057 | compilation unit CU. The result will be allocated on CU's | |
8058 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8059 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8060 | static const char * |
72bf9492 DJ |
8061 | partial_die_parent_scope (struct partial_die_info *pdi, |
8062 | struct dwarf2_cu *cu) | |
8063 | { | |
15d034d0 | 8064 | const char *grandparent_scope; |
72bf9492 | 8065 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8066 | |
72bf9492 DJ |
8067 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8068 | then this means the parent of the specification DIE. */ | |
8069 | ||
8070 | real_pdi = pdi; | |
72bf9492 | 8071 | while (real_pdi->has_specification) |
fb816e8b | 8072 | { |
122cf0f2 AB |
8073 | auto res = find_partial_die (real_pdi->spec_offset, |
8074 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8075 | real_pdi = res.pdi; |
8076 | cu = res.cu; | |
8077 | } | |
72bf9492 DJ |
8078 | |
8079 | parent = real_pdi->die_parent; | |
8080 | if (parent == NULL) | |
8081 | return NULL; | |
8082 | ||
8083 | if (parent->scope_set) | |
8084 | return parent->scope; | |
8085 | ||
52356b79 | 8086 | parent->fixup (cu); |
72bf9492 | 8087 | |
10b3939b | 8088 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8089 | |
acebe513 UW |
8090 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8091 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8092 | Work around this problem here. */ | |
8093 | if (cu->language == language_cplus | |
6e70227d | 8094 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8095 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8096 | && grandparent_scope == NULL) |
8097 | { | |
8098 | parent->scope = NULL; | |
8099 | parent->scope_set = 1; | |
8100 | return NULL; | |
8101 | } | |
8102 | ||
0a4b0913 | 8103 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8104 | if (pdi->tag == DW_TAG_enumerator) |
8105 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8106 | parent->scope = grandparent_scope; | |
8107 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8108 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8109 | || parent->tag == DW_TAG_structure_type |
8110 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8111 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8112 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8113 | || parent->tag == DW_TAG_enumeration_type |
8114 | || (cu->language == language_fortran | |
8115 | && parent->tag == DW_TAG_subprogram | |
8116 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8117 | { |
8118 | if (grandparent_scope == NULL) | |
7d00ffec | 8119 | parent->scope = parent->name (cu); |
72bf9492 | 8120 | else |
3e43a32a MS |
8121 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8122 | grandparent_scope, | |
7d00ffec | 8123 | parent->name (cu), 0, cu); |
72bf9492 | 8124 | } |
72bf9492 DJ |
8125 | else |
8126 | { | |
8127 | /* FIXME drow/2004-04-01: What should we be doing with | |
8128 | function-local names? For partial symbols, we should probably be | |
8129 | ignoring them. */ | |
fa9c3fa0 TT |
8130 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8131 | dwarf_tag_name (parent->tag), | |
8132 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8133 | parent->scope = grandparent_scope; |
c906108c SS |
8134 | } |
8135 | ||
72bf9492 DJ |
8136 | parent->scope_set = 1; |
8137 | return parent->scope; | |
8138 | } | |
8139 | ||
8140 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8141 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8142 | |
43816ebc | 8143 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8144 | partial_die_full_name (struct partial_die_info *pdi, |
8145 | struct dwarf2_cu *cu) | |
8146 | { | |
15d034d0 | 8147 | const char *parent_scope; |
72bf9492 | 8148 | |
98bfdba5 PA |
8149 | /* If this is a template instantiation, we can not work out the |
8150 | template arguments from partial DIEs. So, unfortunately, we have | |
8151 | to go through the full DIEs. At least any work we do building | |
8152 | types here will be reused if full symbols are loaded later. */ | |
8153 | if (pdi->has_template_arguments) | |
8154 | { | |
52356b79 | 8155 | pdi->fixup (cu); |
98bfdba5 | 8156 | |
7d00ffec | 8157 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8158 | { |
8159 | struct die_info *die; | |
8160 | struct attribute attr; | |
8161 | struct dwarf2_cu *ref_cu = cu; | |
8162 | ||
b64f50a1 | 8163 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8164 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8165 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8166 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8167 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8168 | ||
43816ebc | 8169 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8170 | } |
8171 | } | |
8172 | ||
72bf9492 DJ |
8173 | parent_scope = partial_die_parent_scope (pdi, cu); |
8174 | if (parent_scope == NULL) | |
8175 | return NULL; | |
8176 | else | |
43816ebc | 8177 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8178 | pdi->name (cu), |
8179 | 0, cu)); | |
c906108c SS |
8180 | } |
8181 | ||
8182 | static void | |
72bf9492 | 8183 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8184 | { |
976ca316 SM |
8185 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8186 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8187 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8188 | CORE_ADDR addr = 0; |
15d034d0 | 8189 | const char *actual_name = NULL; |
e142c38c DJ |
8190 | CORE_ADDR baseaddr; |
8191 | ||
b3b3bada | 8192 | baseaddr = objfile->text_section_offset (); |
c906108c | 8193 | |
43816ebc TT |
8194 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8195 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8196 | if (built_actual_name != NULL) |
43816ebc | 8197 | actual_name = built_actual_name.get (); |
63d06c5c | 8198 | |
72bf9492 | 8199 | if (actual_name == NULL) |
7d00ffec | 8200 | actual_name = pdi->name (cu); |
72bf9492 | 8201 | |
76e288d1 TT |
8202 | partial_symbol psymbol; |
8203 | memset (&psymbol, 0, sizeof (psymbol)); | |
8204 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8205 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8206 | |
8207 | /* The code below indicates that the psymbol should be installed by | |
8208 | setting this. */ | |
8209 | gdb::optional<psymbol_placement> where; | |
8210 | ||
c906108c SS |
8211 | switch (pdi->tag) |
8212 | { | |
b1dc1806 | 8213 | case DW_TAG_inlined_subroutine: |
c906108c | 8214 | case DW_TAG_subprogram: |
79748972 TT |
8215 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8216 | - baseaddr); | |
0a4b0913 AB |
8217 | if (pdi->is_external |
8218 | || cu->language == language_ada | |
8219 | || (cu->language == language_fortran | |
8220 | && pdi->die_parent != NULL | |
8221 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8222 | { | |
dda83cd7 SM |
8223 | /* Normally, only "external" DIEs are part of the global scope. |
8224 | But in Ada and Fortran, we want to be able to access nested | |
8225 | procedures globally. So all Ada and Fortran subprograms are | |
8226 | stored in the global scope. */ | |
76e288d1 | 8227 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8228 | } |
8229 | else | |
76e288d1 TT |
8230 | where = psymbol_placement::STATIC; |
8231 | ||
8232 | psymbol.domain = VAR_DOMAIN; | |
8233 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8234 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8235 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8236 | |
8237 | if (pdi->main_subprogram && actual_name != NULL) | |
8238 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8239 | break; |
72929c62 | 8240 | case DW_TAG_constant: |
76e288d1 TT |
8241 | psymbol.domain = VAR_DOMAIN; |
8242 | psymbol.aclass = LOC_STATIC; | |
8243 | where = (pdi->is_external | |
8244 | ? psymbol_placement::GLOBAL | |
8245 | : psymbol_placement::STATIC); | |
72929c62 | 8246 | break; |
c906108c | 8247 | case DW_TAG_variable: |
95554aad TT |
8248 | if (pdi->d.locdesc) |
8249 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8250 | |
95554aad | 8251 | if (pdi->d.locdesc |
caac4577 | 8252 | && addr == 0 |
976ca316 | 8253 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8254 | { |
8255 | /* A global or static variable may also have been stripped | |
8256 | out by the linker if unused, in which case its address | |
8257 | will be nullified; do not add such variables into partial | |
8258 | symbol table then. */ | |
8259 | } | |
8260 | else if (pdi->is_external) | |
c906108c SS |
8261 | { |
8262 | /* Global Variable. | |
8263 | Don't enter into the minimal symbol tables as there is | |
8264 | a minimal symbol table entry from the ELF symbols already. | |
8265 | Enter into partial symbol table if it has a location | |
8266 | descriptor or a type. | |
8267 | If the location descriptor is missing, new_symbol will create | |
8268 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8269 | be determined from the minimal symbol table whenever the variable | |
8270 | is referenced. | |
8271 | The address for the partial symbol table entry is not | |
8272 | used by GDB, but it comes in handy for debugging partial symbol | |
8273 | table building. */ | |
8274 | ||
95554aad | 8275 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8276 | { |
8277 | psymbol.domain = VAR_DOMAIN; | |
8278 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8279 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8280 | psymbol.ginfo.value.address = addr; |
8281 | where = psymbol_placement::GLOBAL; | |
8282 | } | |
c906108c SS |
8283 | } |
8284 | else | |
8285 | { | |
ff908ebf AW |
8286 | int has_loc = pdi->d.locdesc != NULL; |
8287 | ||
8288 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8289 | without location descriptors or constant values). */ | |
8290 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8291 | return; |
ff908ebf | 8292 | |
76e288d1 TT |
8293 | psymbol.domain = VAR_DOMAIN; |
8294 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8295 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8296 | if (has_loc) |
8297 | psymbol.ginfo.value.address = addr; | |
8298 | where = psymbol_placement::STATIC; | |
c906108c SS |
8299 | } |
8300 | break; | |
d8f62e84 | 8301 | case DW_TAG_array_type: |
c906108c SS |
8302 | case DW_TAG_typedef: |
8303 | case DW_TAG_base_type: | |
a02abb62 | 8304 | case DW_TAG_subrange_type: |
76e288d1 TT |
8305 | psymbol.domain = VAR_DOMAIN; |
8306 | psymbol.aclass = LOC_TYPEDEF; | |
8307 | where = psymbol_placement::STATIC; | |
c906108c | 8308 | break; |
74921315 | 8309 | case DW_TAG_imported_declaration: |
72bf9492 | 8310 | case DW_TAG_namespace: |
76e288d1 TT |
8311 | psymbol.domain = VAR_DOMAIN; |
8312 | psymbol.aclass = LOC_TYPEDEF; | |
8313 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8314 | break; |
530e8392 | 8315 | case DW_TAG_module: |
a5fd13a9 | 8316 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8317 | available without any name. If so, we skip the module as it |
8318 | doesn't bring any value. */ | |
a5fd13a9 | 8319 | if (actual_name != nullptr) |
76e288d1 TT |
8320 | { |
8321 | psymbol.domain = MODULE_DOMAIN; | |
8322 | psymbol.aclass = LOC_TYPEDEF; | |
8323 | where = psymbol_placement::GLOBAL; | |
8324 | } | |
530e8392 | 8325 | break; |
c906108c | 8326 | case DW_TAG_class_type: |
680b30c7 | 8327 | case DW_TAG_interface_type: |
c906108c SS |
8328 | case DW_TAG_structure_type: |
8329 | case DW_TAG_union_type: | |
8330 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8331 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8332 | about "Structure, Union, and Class Type Entries": "An incomplete |
8333 | structure, union or class type is represented by a structure, | |
8334 | union or class entry that does not have a byte size attribute | |
8335 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8336 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8337 | return; |
fa4028e9 | 8338 | |
63d06c5c DC |
8339 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8340 | static vs. global. */ | |
76e288d1 TT |
8341 | psymbol.domain = STRUCT_DOMAIN; |
8342 | psymbol.aclass = LOC_TYPEDEF; | |
8343 | where = (cu->language == language_cplus | |
8344 | ? psymbol_placement::GLOBAL | |
8345 | : psymbol_placement::STATIC); | |
c906108c SS |
8346 | break; |
8347 | case DW_TAG_enumerator: | |
76e288d1 TT |
8348 | psymbol.domain = VAR_DOMAIN; |
8349 | psymbol.aclass = LOC_CONST; | |
8350 | where = (cu->language == language_cplus | |
8351 | ? psymbol_placement::GLOBAL | |
8352 | : psymbol_placement::STATIC); | |
c906108c SS |
8353 | break; |
8354 | default: | |
8355 | break; | |
8356 | } | |
76e288d1 TT |
8357 | |
8358 | if (where.has_value ()) | |
8359 | { | |
f049a313 TT |
8360 | if (built_actual_name != nullptr) |
8361 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8362 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8363 | psymbol.ginfo.set_linkage_name (actual_name); | |
8364 | else | |
8365 | { | |
8366 | psymbol.ginfo.set_demangled_name (actual_name, | |
8367 | &objfile->objfile_obstack); | |
8368 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8369 | } | |
7b249e47 TT |
8370 | cu->per_cu->v.psymtab->add_psymbol |
8371 | (psymbol, *where, per_objfile->per_bfd->partial_symtabs.get (), | |
8372 | objfile); | |
76e288d1 | 8373 | } |
c906108c SS |
8374 | } |
8375 | ||
5c4e30ca DC |
8376 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8377 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8378 | the name of the enclosing namespace. */ | |
91c24f0a | 8379 | |
72bf9492 DJ |
8380 | static void |
8381 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8382 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8383 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8384 | { |
72bf9492 | 8385 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8386 | |
72bf9492 | 8387 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8388 | |
8389 | /* Now scan partial symbols in that namespace. */ | |
8390 | ||
91c24f0a | 8391 | if (pdi->has_children) |
cdc07690 | 8392 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8393 | } |
8394 | ||
5d7cb8df JK |
8395 | /* Read a partial die corresponding to a Fortran module. */ |
8396 | ||
8397 | static void | |
8398 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8399 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8400 | { |
530e8392 KB |
8401 | /* Add a symbol for the namespace. */ |
8402 | ||
8403 | add_partial_symbol (pdi, cu); | |
8404 | ||
f55ee35c | 8405 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8406 | |
8407 | if (pdi->has_children) | |
cdc07690 | 8408 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8409 | } |
8410 | ||
b1dc1806 XR |
8411 | /* Read a partial die corresponding to a subprogram or an inlined |
8412 | subprogram and create a partial symbol for that subprogram. | |
8413 | When the CU language allows it, this routine also defines a partial | |
8414 | symbol for each nested subprogram that this subprogram contains. | |
8415 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8416 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8417 | |
cdc07690 YQ |
8418 | PDI may also be a lexical block, in which case we simply search |
8419 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8420 | Again, this is only performed when the CU language allows this |
8421 | type of definitions. */ | |
8422 | ||
8423 | static void | |
8424 | add_partial_subprogram (struct partial_die_info *pdi, | |
8425 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8426 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8427 | { |
b1dc1806 | 8428 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8429 | { |
8430 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8431 | { |
8432 | if (pdi->lowpc < *lowpc) | |
8433 | *lowpc = pdi->lowpc; | |
8434 | if (pdi->highpc > *highpc) | |
8435 | *highpc = pdi->highpc; | |
cdc07690 | 8436 | if (set_addrmap) |
5734ee8b | 8437 | { |
5e22e966 | 8438 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 8439 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 8440 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8441 | CORE_ADDR baseaddr; |
b926417a TT |
8442 | CORE_ADDR this_highpc; |
8443 | CORE_ADDR this_lowpc; | |
5734ee8b | 8444 | |
b3b3bada | 8445 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8446 | this_lowpc |
8447 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8448 | pdi->lowpc + baseaddr) | |
8449 | - baseaddr); | |
8450 | this_highpc | |
8451 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8452 | pdi->highpc + baseaddr) | |
8453 | - baseaddr); | |
84685904 | 8454 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
b926417a | 8455 | this_lowpc, this_highpc - 1, |
9291a0cd | 8456 | cu->per_cu->v.psymtab); |
5734ee8b | 8457 | } |
dda83cd7 | 8458 | } |
481860b3 GB |
8459 | |
8460 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8461 | { | |
dda83cd7 | 8462 | if (!pdi->is_declaration) |
e8d05480 JB |
8463 | /* Ignore subprogram DIEs that do not have a name, they are |
8464 | illegal. Do not emit a complaint at this point, we will | |
8465 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8466 | if (pdi->name (cu)) |
e8d05480 | 8467 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8468 | } |
bc30ff58 | 8469 | } |
6e70227d | 8470 | |
bc30ff58 JB |
8471 | if (! pdi->has_children) |
8472 | return; | |
8473 | ||
0a4b0913 | 8474 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8475 | { |
8476 | pdi = pdi->die_child; | |
8477 | while (pdi != NULL) | |
8478 | { | |
52356b79 | 8479 | pdi->fixup (cu); |
bc30ff58 | 8480 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8481 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8482 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8483 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8484 | pdi = pdi->die_sibling; |
8485 | } | |
8486 | } | |
8487 | } | |
8488 | ||
91c24f0a DC |
8489 | /* Read a partial die corresponding to an enumeration type. */ |
8490 | ||
72bf9492 DJ |
8491 | static void |
8492 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8493 | struct dwarf2_cu *cu) | |
91c24f0a | 8494 | { |
72bf9492 | 8495 | struct partial_die_info *pdi; |
91c24f0a | 8496 | |
7d00ffec | 8497 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8498 | add_partial_symbol (enum_pdi, cu); |
8499 | ||
8500 | pdi = enum_pdi->die_child; | |
8501 | while (pdi) | |
91c24f0a | 8502 | { |
7d00ffec | 8503 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8504 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8505 | else |
72bf9492 DJ |
8506 | add_partial_symbol (pdi, cu); |
8507 | pdi = pdi->die_sibling; | |
91c24f0a | 8508 | } |
91c24f0a DC |
8509 | } |
8510 | ||
6caca83c CC |
8511 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8512 | ||
8513 | static unsigned int | |
d521ce57 | 8514 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8515 | { |
8516 | unsigned int bytes_read; | |
8517 | ||
8518 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8519 | } | |
8520 | ||
685af9cd TT |
8521 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8522 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8523 | ||
4bb7a0a7 DJ |
8524 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8525 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8526 | the initial number. */ | |
8527 | ||
7c32eebb | 8528 | static const struct abbrev_info * |
685af9cd TT |
8529 | peek_die_abbrev (const die_reader_specs &reader, |
8530 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8531 | { |
685af9cd | 8532 | dwarf2_cu *cu = reader.cu; |
0280fdcc | 8533 | bfd *abfd = reader.abfd; |
685af9cd TT |
8534 | unsigned int abbrev_number |
8535 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8536 | |
8537 | if (abbrev_number == 0) | |
8538 | return NULL; | |
8539 | ||
7c32eebb TT |
8540 | const abbrev_info *abbrev |
8541 | = reader.abbrev_table->lookup_abbrev (abbrev_number); | |
4bb7a0a7 DJ |
8542 | if (!abbrev) |
8543 | { | |
422b9917 | 8544 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8545 | " at offset %s [in module %s]"), |
422b9917 | 8546 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8547 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8548 | } |
8549 | ||
8550 | return abbrev; | |
8551 | } | |
8552 | ||
93311388 DE |
8553 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8554 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8555 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8556 | ||
d521ce57 TT |
8557 | static const gdb_byte * |
8558 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8559 | { |
4bb7a0a7 DJ |
8560 | while (1) |
8561 | { | |
685af9cd | 8562 | unsigned int bytes_read; |
7c32eebb TT |
8563 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
8564 | &bytes_read); | |
685af9cd | 8565 | |
4bb7a0a7 DJ |
8566 | if (abbrev == NULL) |
8567 | return info_ptr + bytes_read; | |
8568 | else | |
dee91e82 | 8569 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8570 | } |
8571 | } | |
8572 | ||
93311388 DE |
8573 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8574 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8575 | abbrev corresponding to that skipped uleb128 should be passed in |
8576 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8577 | children. */ | |
8578 | ||
d521ce57 TT |
8579 | static const gdb_byte * |
8580 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
7c32eebb | 8581 | const struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8582 | { |
8583 | unsigned int bytes_read; | |
8584 | struct attribute attr; | |
dee91e82 DE |
8585 | bfd *abfd = reader->abfd; |
8586 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8587 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8588 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8589 | unsigned int form, i; |
8590 | ||
8591 | for (i = 0; i < abbrev->num_attrs; i++) | |
8592 | { | |
8593 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8594 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8595 | { | |
7a5f294d | 8596 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8597 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8598 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8599 | else |
b9502d3f | 8600 | { |
0826b30a | 8601 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8602 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8603 | |
8604 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8605 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8606 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8607 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8608 | else |
8609 | return sibling_ptr; | |
8610 | } | |
4bb7a0a7 DJ |
8611 | } |
8612 | ||
8613 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8614 | form = abbrev->attrs[i].form; | |
8615 | skip_attribute: | |
8616 | switch (form) | |
8617 | { | |
4bb7a0a7 | 8618 | case DW_FORM_ref_addr: |
ae411497 TT |
8619 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8620 | and later it is offset sized. */ | |
8621 | if (cu->header.version == 2) | |
8622 | info_ptr += cu->header.addr_size; | |
8623 | else | |
8624 | info_ptr += cu->header.offset_size; | |
8625 | break; | |
36586728 TT |
8626 | case DW_FORM_GNU_ref_alt: |
8627 | info_ptr += cu->header.offset_size; | |
8628 | break; | |
ae411497 | 8629 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8630 | info_ptr += cu->header.addr_size; |
8631 | break; | |
8632 | case DW_FORM_data1: | |
8633 | case DW_FORM_ref1: | |
8634 | case DW_FORM_flag: | |
8fe0f950 | 8635 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8636 | info_ptr += 1; |
8637 | break; | |
2dc7f7b3 | 8638 | case DW_FORM_flag_present: |
43988095 | 8639 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8640 | break; |
4bb7a0a7 DJ |
8641 | case DW_FORM_data2: |
8642 | case DW_FORM_ref2: | |
8fe0f950 | 8643 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8644 | info_ptr += 2; |
8645 | break; | |
8fe0f950 AT |
8646 | case DW_FORM_strx3: |
8647 | info_ptr += 3; | |
8648 | break; | |
4bb7a0a7 DJ |
8649 | case DW_FORM_data4: |
8650 | case DW_FORM_ref4: | |
8fe0f950 | 8651 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8652 | info_ptr += 4; |
8653 | break; | |
8654 | case DW_FORM_data8: | |
8655 | case DW_FORM_ref8: | |
55f1336d | 8656 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8657 | info_ptr += 8; |
8658 | break; | |
0224619f JK |
8659 | case DW_FORM_data16: |
8660 | info_ptr += 16; | |
8661 | break; | |
4bb7a0a7 | 8662 | case DW_FORM_string: |
9b1c24c8 | 8663 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8664 | info_ptr += bytes_read; |
8665 | break; | |
2dc7f7b3 | 8666 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8667 | case DW_FORM_strp: |
36586728 | 8668 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8669 | info_ptr += cu->header.offset_size; |
8670 | break; | |
2dc7f7b3 | 8671 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8672 | case DW_FORM_block: |
8673 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8674 | info_ptr += bytes_read; | |
8675 | break; | |
8676 | case DW_FORM_block1: | |
8677 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8678 | break; | |
8679 | case DW_FORM_block2: | |
8680 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8681 | break; | |
8682 | case DW_FORM_block4: | |
8683 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8684 | break; | |
336d760d | 8685 | case DW_FORM_addrx: |
cf532bd1 | 8686 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8687 | case DW_FORM_sdata: |
8688 | case DW_FORM_udata: | |
8689 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8690 | case DW_FORM_GNU_addr_index: |
8691 | case DW_FORM_GNU_str_index: | |
18a8505e | 8692 | case DW_FORM_rnglistx: |
41144253 | 8693 | case DW_FORM_loclistx: |
d521ce57 | 8694 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8695 | break; |
8696 | case DW_FORM_indirect: | |
8697 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8698 | info_ptr += bytes_read; | |
8699 | /* We need to continue parsing from here, so just go back to | |
8700 | the top. */ | |
8701 | goto skip_attribute; | |
8702 | ||
8703 | default: | |
3e43a32a MS |
8704 | error (_("Dwarf Error: Cannot handle %s " |
8705 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8706 | dwarf_form_name (form), |
8707 | bfd_get_filename (abfd)); | |
8708 | } | |
8709 | } | |
8710 | ||
8711 | if (abbrev->has_children) | |
dee91e82 | 8712 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8713 | else |
8714 | return info_ptr; | |
8715 | } | |
8716 | ||
93311388 | 8717 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8718 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8719 | |
d521ce57 | 8720 | static const gdb_byte * |
dee91e82 DE |
8721 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8722 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8723 | const gdb_byte *info_ptr) |
91c24f0a DC |
8724 | { |
8725 | /* Do we know the sibling already? */ | |
72bf9492 | 8726 | |
91c24f0a DC |
8727 | if (orig_pdi->sibling) |
8728 | return orig_pdi->sibling; | |
8729 | ||
8730 | /* Are there any children to deal with? */ | |
8731 | ||
8732 | if (!orig_pdi->has_children) | |
8733 | return info_ptr; | |
8734 | ||
4bb7a0a7 | 8735 | /* Skip the children the long way. */ |
91c24f0a | 8736 | |
dee91e82 | 8737 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8738 | } |
8739 | ||
257e7a09 | 8740 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8741 | not NULL. */ |
c906108c | 8742 | |
891813be TT |
8743 | void |
8744 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8745 | { |
976ca316 | 8746 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 8747 | |
976ca316 | 8748 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 8749 | |
077cbab2 TT |
8750 | /* If this psymtab is constructed from a debug-only objfile, the |
8751 | has_section_at_zero flag will not necessarily be correct. We | |
8752 | can get the correct value for this flag by looking at the data | |
8753 | associated with the (presumably stripped) associated objfile. */ | |
8754 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8755 | { |
976ca316 | 8756 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 8757 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 8758 | |
976ca316 SM |
8759 | per_objfile->per_bfd->has_section_at_zero |
8760 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8761 | } |
98bfdba5 | 8762 | |
8566b89b | 8763 | expand_psymtab (objfile); |
95554aad | 8764 | |
976ca316 | 8765 | process_cu_includes (per_objfile); |
c906108c | 8766 | } |
9cdd5dbd DE |
8767 | \f |
8768 | /* Reading in full CUs. */ | |
c906108c | 8769 | |
10b3939b DJ |
8770 | /* Add PER_CU to the queue. */ |
8771 | ||
8772 | static void | |
120ce1b5 SM |
8773 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8774 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8775 | enum language pretend_language) |
10b3939b | 8776 | { |
10b3939b | 8777 | per_cu->queued = 1; |
08ac5771 SM |
8778 | |
8779 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
8780 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
8781 | } |
8782 | ||
616c069a SM |
8783 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
8784 | ||
89e63ee4 DE |
8785 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
8786 | dependency. | |
69d751e3 | 8787 | |
616c069a SM |
8788 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
8789 | DIEs, false otherwise. | |
8790 | ||
8791 | Explanation: there is an invariant that if a CU is queued for expansion | |
8792 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
8793 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
8794 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
8795 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
8796 | invariant is respected. | |
8797 | ||
8798 | The caller is therefore not required to load the CU's DIEs (we return false) | |
8799 | if: | |
8800 | ||
8801 | - the CU is already expanded, and therefore does not get enqueued | |
8802 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
8803 | ||
8804 | Note that the caller should not use this function's return value as an | |
8805 | indicator of whether the CU's DIEs are loaded right now, it should check | |
8806 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
8807 | |
8808 | static int | |
89e63ee4 | 8809 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8810 | dwarf2_per_cu_data *per_cu, |
8811 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8812 | enum language pretend_language) |
8813 | { | |
8814 | /* We may arrive here during partial symbol reading, if we need full | |
8815 | DIEs to process an unusual case (e.g. template arguments). Do | |
8816 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8817 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 8818 | { |
7188ed02 SM |
8819 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8820 | ||
8821 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
8822 | return 1; |
8823 | return 0; | |
8824 | } | |
8825 | ||
8826 | /* Mark the dependence relation so that we don't flush PER_CU | |
8827 | too early. */ | |
89e63ee4 DE |
8828 | if (dependent_cu != NULL) |
8829 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8830 | |
8831 | /* If it's already on the queue, we have nothing to do. */ | |
8832 | if (per_cu->queued) | |
de53369b SM |
8833 | { |
8834 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
8835 | loaded. */ | |
8836 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
8837 | |
8838 | /* If the CU is queued for expansion, it should not already be | |
8839 | expanded. */ | |
8840 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
8841 | ||
8842 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
8843 | return 0; |
8844 | } | |
0907af0c | 8845 | |
616c069a SM |
8846 | bool queued = false; |
8847 | if (!per_objfile->symtab_set_p (per_cu)) | |
8848 | { | |
8849 | /* Add it to the queue. */ | |
8850 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
8851 | queued = true; | |
8852 | } | |
8853 | ||
0907af0c DE |
8854 | /* If the compilation unit is already loaded, just mark it as |
8855 | used. */ | |
7188ed02 SM |
8856 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8857 | if (cu != nullptr) | |
616c069a | 8858 | cu->last_used = 0; |
0907af0c | 8859 | |
616c069a SM |
8860 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
8861 | and the DIEs are not already loaded. */ | |
8862 | return queued && cu == nullptr; | |
0907af0c DE |
8863 | } |
8864 | ||
10b3939b DJ |
8865 | /* Process the queue. */ |
8866 | ||
8867 | static void | |
976ca316 | 8868 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 8869 | { |
6f738b01 SM |
8870 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
8871 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 8872 | |
03dd20cc DJ |
8873 | /* The queue starts out with one item, but following a DIE reference |
8874 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 8875 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 8876 | { |
08ac5771 | 8877 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 8878 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 8879 | |
976ca316 | 8880 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 8881 | { |
976ca316 | 8882 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 8883 | |
7188ed02 SM |
8884 | /* Skip dummy CUs. */ |
8885 | if (cu != nullptr) | |
73be47f5 | 8886 | { |
7188ed02 SM |
8887 | unsigned int debug_print_threshold; |
8888 | char buf[100]; | |
8889 | ||
8890 | if (per_cu->is_debug_types) | |
8891 | { | |
8892 | struct signatured_type *sig_type = | |
8893 | (struct signatured_type *) per_cu; | |
8894 | ||
8895 | sprintf (buf, "TU %s at offset %s", | |
8896 | hex_string (sig_type->signature), | |
8897 | sect_offset_str (per_cu->sect_off)); | |
8898 | /* There can be 100s of TUs. | |
8899 | Only print them in verbose mode. */ | |
8900 | debug_print_threshold = 2; | |
8901 | } | |
8902 | else | |
8903 | { | |
8904 | sprintf (buf, "CU at offset %s", | |
8905 | sect_offset_str (per_cu->sect_off)); | |
8906 | debug_print_threshold = 1; | |
8907 | } | |
247f5c4f | 8908 | |
7188ed02 | 8909 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8910 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 8911 | |
7188ed02 SM |
8912 | if (per_cu->is_debug_types) |
8913 | process_full_type_unit (cu, item.pretend_language); | |
8914 | else | |
8915 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 8916 | |
7188ed02 | 8917 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8918 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 8919 | } |
f4dc4d17 | 8920 | } |
10b3939b | 8921 | |
7188ed02 | 8922 | per_cu->queued = 0; |
08ac5771 | 8923 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
8924 | } |
8925 | ||
6f738b01 SM |
8926 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
8927 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
8928 | } |
8929 | ||
10b3939b DJ |
8930 | /* Read in full symbols for PST, and anything it depends on. */ |
8931 | ||
8566b89b TT |
8932 | void |
8933 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8934 | { |
af758d11 | 8935 | gdb_assert (!readin_p (objfile)); |
95554aad | 8936 | |
17ee85fc TT |
8937 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
8938 | free_cached_comp_units freer (per_objfile); | |
48993951 | 8939 | expand_dependencies (objfile); |
aaa75496 | 8940 | |
97a1449a | 8941 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 8942 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
8943 | } |
8944 | ||
af758d11 SM |
8945 | /* See psympriv.h. */ |
8946 | ||
8947 | bool | |
8948 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
8949 | { | |
8950 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8951 | return per_objfile->symtab_set_p (per_cu_data); | |
8952 | } | |
8953 | ||
8954 | /* See psympriv.h. */ | |
8955 | ||
8956 | compunit_symtab * | |
8957 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
8958 | { | |
8959 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8960 | return per_objfile->get_symtab (per_cu_data); | |
8961 | } | |
8962 | ||
dee91e82 DE |
8963 | /* Trivial hash function for die_info: the hash value of a DIE |
8964 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8965 | |
dee91e82 DE |
8966 | static hashval_t |
8967 | die_hash (const void *item) | |
10b3939b | 8968 | { |
9a3c8263 | 8969 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8970 | |
9c541725 | 8971 | return to_underlying (die->sect_off); |
dee91e82 | 8972 | } |
63d06c5c | 8973 | |
dee91e82 DE |
8974 | /* Trivial comparison function for die_info structures: two DIEs |
8975 | are equal if they have the same offset. */ | |
98bfdba5 | 8976 | |
dee91e82 DE |
8977 | static int |
8978 | die_eq (const void *item_lhs, const void *item_rhs) | |
8979 | { | |
9a3c8263 SM |
8980 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8981 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8982 | |
9c541725 | 8983 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8984 | } |
c906108c | 8985 | |
4a636814 SM |
8986 | /* Load the DIEs associated with PER_CU into memory. |
8987 | ||
8988 | In some cases, the caller, while reading partial symbols, will need to load | |
8989 | the full symbols for the CU for some reason. It will already have a | |
8990 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
8991 | rather than creating a new one. */ | |
c906108c | 8992 | |
dee91e82 | 8993 | static void |
ab432490 SM |
8994 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
8995 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 8996 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
8997 | bool skip_partial, |
8998 | enum language pretend_language) | |
dee91e82 | 8999 | { |
c0ab21c2 TT |
9000 | gdb_assert (! this_cu->is_debug_types); |
9001 | ||
7188ed02 | 9002 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9003 | if (reader.dummy_p) |
9004 | return; | |
9005 | ||
9006 | struct dwarf2_cu *cu = reader.cu; | |
9007 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9008 | |
dee91e82 DE |
9009 | gdb_assert (cu->die_hash == NULL); |
9010 | cu->die_hash = | |
9011 | htab_create_alloc_ex (cu->header.length / 12, | |
9012 | die_hash, | |
9013 | die_eq, | |
9014 | NULL, | |
9015 | &cu->comp_unit_obstack, | |
9016 | hashtab_obstack_allocate, | |
9017 | dummy_obstack_deallocate); | |
e142c38c | 9018 | |
3e225074 | 9019 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9020 | reader.comp_unit_die->child |
9021 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9022 | &info_ptr, reader.comp_unit_die); | |
9023 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9024 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9025 | |
9026 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9027 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9028 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9029 | or we won't be able to build types correctly. |
9030 | Similarly, if we do not read the producer, we can not apply | |
9031 | producer-specific interpretation. */ | |
c0ab21c2 | 9032 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9033 | |
9034 | reader.keep (); | |
10b3939b DJ |
9035 | } |
9036 | ||
3da10d80 KS |
9037 | /* Add a DIE to the delayed physname list. */ |
9038 | ||
9039 | static void | |
9040 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9041 | const char *name, struct die_info *die, | |
9042 | struct dwarf2_cu *cu) | |
9043 | { | |
9044 | struct delayed_method_info mi; | |
9045 | mi.type = type; | |
9046 | mi.fnfield_index = fnfield_index; | |
9047 | mi.index = index; | |
9048 | mi.name = name; | |
9049 | mi.die = die; | |
c89b44cd | 9050 | cu->method_list.push_back (mi); |
3da10d80 KS |
9051 | } |
9052 | ||
3693fdb3 PA |
9053 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9054 | "const" / "volatile". If so, decrements LEN by the length of the | |
9055 | modifier and return true. Otherwise return false. */ | |
9056 | ||
9057 | template<size_t N> | |
9058 | static bool | |
9059 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9060 | { | |
9061 | size_t mod_len = sizeof (mod) - 1; | |
9062 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9063 | { | |
9064 | len -= mod_len; | |
9065 | return true; | |
9066 | } | |
9067 | return false; | |
9068 | } | |
9069 | ||
3da10d80 KS |
9070 | /* Compute the physnames of any methods on the CU's method list. |
9071 | ||
9072 | The computation of method physnames is delayed in order to avoid the | |
9073 | (bad) condition that one of the method's formal parameters is of an as yet | |
9074 | incomplete type. */ | |
9075 | ||
9076 | static void | |
9077 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9078 | { | |
3693fdb3 | 9079 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9080 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9081 | return; |
9082 | gdb_assert (cu->language == language_cplus); | |
9083 | ||
52941706 | 9084 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9085 | { |
1d06ead6 | 9086 | const char *physname; |
3da10d80 | 9087 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9088 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9089 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9090 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9091 | = physname ? physname : ""; |
3693fdb3 PA |
9092 | |
9093 | /* Since there's no tag to indicate whether a method is a | |
9094 | const/volatile overload, extract that information out of the | |
9095 | demangled name. */ | |
9096 | if (physname != NULL) | |
9097 | { | |
9098 | size_t len = strlen (physname); | |
9099 | ||
9100 | while (1) | |
9101 | { | |
9102 | if (physname[len] == ')') /* shortcut */ | |
9103 | break; | |
9104 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9105 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9106 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9107 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9108 | else |
9109 | break; | |
9110 | } | |
9111 | } | |
3da10d80 | 9112 | } |
c89b44cd TT |
9113 | |
9114 | /* The list is no longer needed. */ | |
9115 | cu->method_list.clear (); | |
3da10d80 KS |
9116 | } |
9117 | ||
a766d390 DE |
9118 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9119 | and it's not clear if/how imported objects will appear. | |
9120 | To keep Go support simple until that's worked out, | |
9121 | go back through what we've read and create something usable. | |
9122 | We could do this while processing each DIE, and feels kinda cleaner, | |
9123 | but that way is more invasive. | |
9124 | This is to, for example, allow the user to type "p var" or "b main" | |
9125 | without having to specify the package name, and allow lookups | |
9126 | of module.object to work in contexts that use the expression | |
9127 | parser. */ | |
9128 | ||
9129 | static void | |
9130 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9131 | { | |
421d1616 | 9132 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9133 | struct pending *list; |
9134 | int i; | |
9135 | ||
c24bdb02 | 9136 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9137 | list != NULL; |
9138 | list = list->next) | |
a766d390 DE |
9139 | { |
9140 | for (i = 0; i < list->nsyms; ++i) | |
9141 | { | |
9142 | struct symbol *sym = list->symbol[i]; | |
9143 | ||
c1b5c1eb | 9144 | if (sym->language () == language_go |
a766d390 DE |
9145 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9146 | { | |
421d1616 TT |
9147 | gdb::unique_xmalloc_ptr<char> this_package_name |
9148 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9149 | |
9150 | if (this_package_name == NULL) | |
9151 | continue; | |
9152 | if (package_name == NULL) | |
421d1616 | 9153 | package_name = std::move (this_package_name); |
a766d390 DE |
9154 | else |
9155 | { | |
5e22e966 | 9156 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9157 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9158 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9159 | (symbol_symtab (sym) != NULL |
9160 | ? symtab_to_filename_for_display | |
9161 | (symbol_symtab (sym)) | |
e3b94546 | 9162 | : objfile_name (objfile)), |
421d1616 | 9163 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9164 | } |
9165 | } | |
9166 | } | |
9167 | } | |
9168 | ||
9169 | if (package_name != NULL) | |
9170 | { | |
5e22e966 | 9171 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9172 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9173 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9174 | saved_package_name); | |
a766d390 DE |
9175 | struct symbol *sym; |
9176 | ||
8c14c3a3 | 9177 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9178 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9179 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9180 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9181 | e.g., "main" finds the "main" module and not C's main(). */ | |
9182 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9183 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9184 | SYMBOL_TYPE (sym) = type; |
9185 | ||
c24bdb02 | 9186 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9187 | } |
9188 | } | |
9189 | ||
c9317f21 TT |
9190 | /* Allocate a fully-qualified name consisting of the two parts on the |
9191 | obstack. */ | |
9192 | ||
9193 | static const char * | |
9194 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9195 | { | |
9196 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9197 | } | |
9198 | ||
9c6a1327 TT |
9199 | /* A helper that allocates a variant part to attach to a Rust enum |
9200 | type. OBSTACK is where the results should be allocated. TYPE is | |
9201 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9202 | discriminant. It must be the index of one of the fields of TYPE, |
9203 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9204 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9205 | no default. RANGES is indexed by "effective" field number (the | |
9206 | field index, but omitting the discriminant and default fields) and | |
9207 | must hold the discriminant values used by the variants. Note that | |
9208 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9209 | already allocated on it, or static. */ | |
c9317f21 | 9210 | |
9c6a1327 TT |
9211 | static void |
9212 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9213 | int discriminant_index, int default_index, | |
9214 | gdb::array_view<discriminant_range> ranges) | |
9215 | { | |
57d02173 TT |
9216 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9217 | gdb_assert (discriminant_index == -1 | |
9218 | || (discriminant_index >= 0 | |
9219 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9220 | gdb_assert (default_index == -1 |
1f704f76 | 9221 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9222 | |
9c6a1327 | 9223 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9224 | int n_variants = type->num_fields (); |
9225 | if (discriminant_index != -1) | |
9226 | --n_variants; | |
c9317f21 | 9227 | |
9c6a1327 TT |
9228 | variant *variants = new (obstack) variant[n_variants]; |
9229 | int var_idx = 0; | |
9230 | int range_idx = 0; | |
1f704f76 | 9231 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9232 | { |
9233 | if (i == discriminant_index) | |
9234 | continue; | |
c9317f21 | 9235 | |
9c6a1327 TT |
9236 | variants[var_idx].first_field = i; |
9237 | variants[var_idx].last_field = i + 1; | |
9238 | ||
9239 | /* The default field does not need a range, but other fields do. | |
9240 | We skipped the discriminant above. */ | |
9241 | if (i != default_index) | |
9242 | { | |
9243 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9244 | ++range_idx; | |
9245 | } | |
c9317f21 | 9246 | |
9c6a1327 TT |
9247 | ++var_idx; |
9248 | } | |
9249 | ||
9250 | gdb_assert (range_idx == ranges.size ()); | |
9251 | gdb_assert (var_idx == n_variants); | |
9252 | ||
9253 | variant_part *part = new (obstack) variant_part; | |
9254 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9255 | /* If there is no discriminant, then whether it is signed is of no |
9256 | consequence. */ | |
9257 | part->is_unsigned | |
9258 | = (discriminant_index == -1 | |
9259 | ? false | |
c6d940a9 | 9260 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9261 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9262 | ||
9263 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9264 | gdb::array_view<variant_part> *prop_value | |
9265 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9266 | |
9c6a1327 | 9267 | struct dynamic_prop prop; |
8c2e4e06 | 9268 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9269 | |
5c54719c | 9270 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9271 | } |
9272 | ||
9273 | /* Some versions of rustc emitted enums in an unusual way. | |
9274 | ||
9275 | Ordinary enums were emitted as unions. The first element of each | |
9276 | structure in the union was named "RUST$ENUM$DISR". This element | |
9277 | held the discriminant. | |
9278 | ||
9279 | These versions of Rust also implemented the "non-zero" | |
9280 | optimization. When the enum had two values, and one is empty and | |
9281 | the other holds a pointer that cannot be zero, the pointer is used | |
9282 | as the discriminant, with a zero value meaning the empty variant. | |
9283 | Here, the union's first member is of the form | |
9284 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9285 | where the fieldnos are the indices of the fields that should be | |
9286 | traversed in order to find the field (which may be several fields deep) | |
9287 | and the variantname is the name of the variant of the case when the | |
9288 | field is zero. | |
9289 | ||
9290 | This function recognizes whether TYPE is of one of these forms, | |
9291 | and, if so, smashes it to be a variant type. */ | |
9292 | ||
9293 | static void | |
9294 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9295 | { | |
78134374 | 9296 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9297 | |
9298 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9299 | if (type->num_fields () == 0) |
c9317f21 TT |
9300 | return; |
9301 | ||
9302 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9303 | if (type->num_fields () == 1 |
c9317f21 TT |
9304 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9305 | { | |
9306 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9307 | ||
9308 | /* Decode the field name to find the offset of the | |
9309 | discriminant. */ | |
9310 | ULONGEST bit_offset = 0; | |
940da03e | 9311 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9312 | while (name[0] >= '0' && name[0] <= '9') |
9313 | { | |
9314 | char *tail; | |
9315 | unsigned long index = strtoul (name, &tail, 10); | |
9316 | name = tail; | |
9317 | if (*name != '$' | |
1f704f76 | 9318 | || index >= field_type->num_fields () |
c9317f21 TT |
9319 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9320 | != FIELD_LOC_KIND_BITPOS)) | |
9321 | { | |
b98664d3 | 9322 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9323 | "[in module %s]"), |
9324 | TYPE_FIELD_NAME (type, 0), | |
9325 | objfile_name (objfile)); | |
9326 | return; | |
9327 | } | |
9328 | ++name; | |
9329 | ||
9330 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9331 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9332 | } |
9333 | ||
9c6a1327 TT |
9334 | /* Smash this type to be a structure type. We have to do this |
9335 | because the type has already been recorded. */ | |
67607e24 | 9336 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9337 | type->set_num_fields (3); |
9c6a1327 | 9338 | /* Save the field we care about. */ |
ceacbf6e | 9339 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9340 | type->set_fields |
9341 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9342 | |
9c6a1327 | 9343 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9344 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9345 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9346 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9347 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9348 | |
9349 | /* The order of fields doesn't really matter, so put the real | |
9350 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9351 | type->field (1) = saved_field; |
9c6a1327 | 9352 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9353 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9354 | type->field (1).type ()->set_name | |
7d93a1e0 | 9355 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9356 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9357 | |
9358 | const char *dataless_name | |
7d93a1e0 | 9359 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9360 | name); |
9361 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9362 | dataless_name); | |
5d14b6e5 | 9363 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9364 | /* NAME points into the original discriminant name, which |
9365 | already has the correct lifetime. */ | |
9c6a1327 | 9366 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9367 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9368 | |
9c6a1327 TT |
9369 | /* Indicate that this is a variant type. */ |
9370 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9371 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9372 | } |
77c2dba3 TT |
9373 | /* A union with a single anonymous field is probably an old-style |
9374 | univariant enum. */ | |
1f704f76 | 9375 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9376 | { |
c9317f21 TT |
9377 | /* Smash this type to be a structure type. We have to do this |
9378 | because the type has already been recorded. */ | |
67607e24 | 9379 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9380 | |
940da03e | 9381 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9382 | const char *variant_name |
7d93a1e0 | 9383 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9384 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9385 | field_type->set_name |
9386 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9387 | type->name (), variant_name)); |
57d02173 TT |
9388 | |
9389 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9390 | } |
9391 | else | |
9392 | { | |
9393 | struct type *disr_type = nullptr; | |
1f704f76 | 9394 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9395 | { |
940da03e | 9396 | disr_type = type->field (i).type (); |
c9317f21 | 9397 | |
78134374 | 9398 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9399 | { |
9400 | /* All fields of a true enum will be structs. */ | |
9401 | return; | |
9402 | } | |
1f704f76 | 9403 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9404 | { |
9405 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9406 | disr_type = nullptr; |
c9317f21 TT |
9407 | } |
9408 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9409 | "RUST$ENUM$DISR") != 0) | |
9410 | { | |
9411 | /* Not a Rust enum. */ | |
9412 | return; | |
9413 | } | |
9414 | else | |
9415 | { | |
9416 | /* Found one. */ | |
9417 | break; | |
9418 | } | |
9419 | } | |
9420 | ||
9421 | /* If we got here without a discriminant, then it's probably | |
9422 | just a union. */ | |
9423 | if (disr_type == nullptr) | |
9424 | return; | |
9425 | ||
9426 | /* Smash this type to be a structure type. We have to do this | |
9427 | because the type has already been recorded. */ | |
67607e24 | 9428 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9429 | |
9c6a1327 | 9430 | /* Make space for the discriminant field. */ |
ceacbf6e | 9431 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9432 | field *new_fields |
1f704f76 | 9433 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9434 | * sizeof (struct field))); |
80fc5e77 | 9435 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9436 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9437 | type->set_fields (new_fields); |
1f704f76 | 9438 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9439 | |
9440 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9441 | type->field (0) = *disr_field; |
9c6a1327 TT |
9442 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9443 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9444 | |
9445 | /* We need a way to find the correct discriminant given a | |
9446 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9447 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9448 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9449 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9450 | { |
9451 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9452 | { | |
9453 | const char *name | |
9454 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9455 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9456 | } | |
9457 | } | |
9458 | ||
1f704f76 | 9459 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9460 | /* We don't need a range entry for the discriminant, but we do |
9461 | need one for every other field, as there is no default | |
9462 | variant. */ | |
9463 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9464 | discriminant_range, | |
9465 | n_fields - 1); | |
c9317f21 TT |
9466 | /* Skip the discriminant here. */ |
9467 | for (int i = 1; i < n_fields; ++i) | |
9468 | { | |
9469 | /* Find the final word in the name of this variant's type. | |
9470 | That name can be used to look up the correct | |
9471 | discriminant. */ | |
9472 | const char *variant_name | |
940da03e | 9473 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9474 | |
9475 | auto iter = discriminant_map.find (variant_name); | |
9476 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9477 | { |
57d02173 TT |
9478 | ranges[i - 1].low = iter->second; |
9479 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9480 | } |
c9317f21 | 9481 | |
57d02173 TT |
9482 | /* In Rust, each element should have the size of the |
9483 | enclosing enum. */ | |
9484 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9485 | ||
bedda9ac | 9486 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9487 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9488 | if (sub_type->num_fields () > 0) |
bedda9ac | 9489 | { |
5e33d5f4 | 9490 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9491 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9492 | } |
9c6a1327 | 9493 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9494 | sub_type->set_name |
9495 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9496 | type->name (), variant_name)); |
c9317f21 | 9497 | } |
9c6a1327 TT |
9498 | |
9499 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9500 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9501 | gdb::array_view<discriminant_range> (ranges, |
9502 | n_fields - 1)); | |
c9317f21 TT |
9503 | } |
9504 | } | |
9505 | ||
9506 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9507 | ||
9508 | static void | |
9509 | rust_union_quirks (struct dwarf2_cu *cu) | |
9510 | { | |
9511 | gdb_assert (cu->language == language_rust); | |
52941706 | 9512 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9513 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9514 | /* We don't need this any more. */ |
9515 | cu->rust_unions.clear (); | |
c9317f21 TT |
9516 | } |
9517 | ||
8adb8487 TT |
9518 | /* See read.h. */ |
9519 | ||
9520 | type_unit_group_unshareable * | |
9521 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9522 | { | |
9523 | auto iter = this->m_type_units.find (tu_group); | |
9524 | if (iter != this->m_type_units.end ()) | |
9525 | return iter->second.get (); | |
9526 | ||
9527 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9528 | type_unit_group_unshareable *result = uniq.get (); | |
9529 | this->m_type_units[tu_group] = std::move (uniq); | |
9530 | return result; | |
9531 | } | |
9532 | ||
e286671b TT |
9533 | struct type * |
9534 | dwarf2_per_objfile::get_type_for_signatured_type | |
9535 | (signatured_type *sig_type) const | |
9536 | { | |
9537 | auto iter = this->m_type_map.find (sig_type); | |
9538 | if (iter == this->m_type_map.end ()) | |
9539 | return nullptr; | |
9540 | ||
9541 | return iter->second; | |
9542 | } | |
9543 | ||
9544 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9545 | (signatured_type *sig_type, struct type *type) | |
9546 | { | |
9547 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9548 | ||
9549 | this->m_type_map[sig_type] = type; | |
9550 | } | |
9551 | ||
95554aad TT |
9552 | /* A helper function for computing the list of all symbol tables |
9553 | included by PER_CU. */ | |
9554 | ||
9555 | static void | |
4c39bc03 | 9556 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9557 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9558 | dwarf2_per_cu_data *per_cu, |
9559 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9560 | struct compunit_symtab *immediate_parent) |
95554aad | 9561 | { |
af758d11 | 9562 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9563 | if (*slot != NULL) |
9564 | { | |
9565 | /* This inclusion and its children have been processed. */ | |
9566 | return; | |
9567 | } | |
9568 | ||
9569 | *slot = per_cu; | |
af758d11 | 9570 | |
95554aad | 9571 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9572 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9573 | if (cust != NULL) |
ec94af83 DE |
9574 | { |
9575 | /* If this is a type unit only add its symbol table if we haven't | |
9576 | seen it yet (type unit per_cu's can share symtabs). */ | |
9577 | if (per_cu->is_debug_types) | |
9578 | { | |
43f3e411 | 9579 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9580 | if (*slot == NULL) |
9581 | { | |
43f3e411 | 9582 | *slot = cust; |
4c39bc03 | 9583 | result->push_back (cust); |
43f3e411 DE |
9584 | if (cust->user == NULL) |
9585 | cust->user = immediate_parent; | |
ec94af83 DE |
9586 | } |
9587 | } | |
9588 | else | |
f9125b6c | 9589 | { |
4c39bc03 | 9590 | result->push_back (cust); |
43f3e411 DE |
9591 | if (cust->user == NULL) |
9592 | cust->user = immediate_parent; | |
f9125b6c | 9593 | } |
ec94af83 | 9594 | } |
95554aad | 9595 | |
ae640021 AB |
9596 | if (!per_cu->imported_symtabs_empty ()) |
9597 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9598 | { | |
9599 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9600 | all_type_symtabs, ptr, per_objfile, |
9601 | cust); | |
ae640021 | 9602 | } |
95554aad TT |
9603 | } |
9604 | ||
43f3e411 | 9605 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9606 | PER_CU. */ |
9607 | ||
9608 | static void | |
43182c09 SM |
9609 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9610 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9611 | { |
f4dc4d17 DE |
9612 | gdb_assert (! per_cu->is_debug_types); |
9613 | ||
ae640021 | 9614 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9615 | { |
ae640021 | 9616 | int len; |
4c39bc03 | 9617 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9618 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9619 | |
9620 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9621 | if (cust == NULL) |
95554aad TT |
9622 | return; |
9623 | ||
280a9412 TT |
9624 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9625 | htab_eq_pointer, | |
9626 | NULL, xcalloc, xfree)); | |
9627 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9628 | htab_eq_pointer, | |
9629 | NULL, xcalloc, xfree)); | |
95554aad | 9630 | |
ae640021 | 9631 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9632 | { |
280a9412 TT |
9633 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9634 | all_type_symtabs.get (), ptr, | |
9635 | per_objfile, cust); | |
ec94af83 | 9636 | } |
95554aad | 9637 | |
ec94af83 | 9638 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9639 | len = result_symtabs.size (); |
43f3e411 | 9640 | cust->includes |
f6e649dd | 9641 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9642 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9643 | memcpy (cust->includes, result_symtabs.data (), |
9644 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9645 | cust->includes[len] = NULL; |
95554aad TT |
9646 | } |
9647 | } | |
9648 | ||
9649 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9650 | read. */ | |
9651 | ||
9652 | static void | |
976ca316 | 9653 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9654 | { |
976ca316 | 9655 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9656 | { |
9657 | if (! iter->is_debug_types) | |
976ca316 | 9658 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9659 | } |
95554aad | 9660 | |
976ca316 | 9661 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9662 | } |
9663 | ||
8fc0b21d | 9664 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9665 | already been loaded into memory. */ |
9666 | ||
9667 | static void | |
8fc0b21d | 9668 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9669 | { |
976ca316 SM |
9670 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9671 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9672 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9673 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9674 | struct compunit_symtab *cust; |
10b3939b | 9675 | CORE_ADDR baseaddr; |
4359dff1 | 9676 | struct block *static_block; |
3e29f34a | 9677 | CORE_ADDR addr; |
10b3939b | 9678 | |
b3b3bada | 9679 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9680 | |
c89b44cd TT |
9681 | /* Clear the list here in case something was left over. */ |
9682 | cu->method_list.clear (); | |
10b3939b | 9683 | |
95554aad TT |
9684 | cu->language = pretend_language; |
9685 | cu->language_defn = language_def (cu->language); | |
9686 | ||
1c47ec3e TV |
9687 | dwarf2_find_base_address (cu->dies, cu); |
9688 | ||
702cf3f5 AB |
9689 | /* Before we start reading the top-level DIE, ensure it has a valid tag |
9690 | type. */ | |
9691 | switch (cu->dies->tag) | |
9692 | { | |
9693 | case DW_TAG_compile_unit: | |
9694 | case DW_TAG_partial_unit: | |
9695 | case DW_TAG_type_unit: | |
9696 | break; | |
9697 | default: | |
9698 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), | |
9699 | dwarf_tag_name (cu->dies->tag), | |
9700 | sect_offset_str (cu->per_cu->sect_off), | |
9701 | objfile_name (per_objfile->objfile)); | |
9702 | } | |
9703 | ||
c906108c | 9704 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9705 | process_die (cu->dies, cu); |
c906108c | 9706 | |
a766d390 DE |
9707 | /* For now fudge the Go package. */ |
9708 | if (cu->language == language_go) | |
9709 | fixup_go_packaging (cu); | |
9710 | ||
5f48f8f3 | 9711 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9712 | should be complete, and it should now be safe to compute all of the |
9713 | physnames. */ | |
9714 | compute_delayed_physnames (cu); | |
3da10d80 | 9715 | |
c9317f21 TT |
9716 | if (cu->language == language_rust) |
9717 | rust_union_quirks (cu); | |
9718 | ||
fae299cd DC |
9719 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9720 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9721 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9722 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9723 | |
3e29f34a | 9724 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9725 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9726 | |
9727 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9728 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9729 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9730 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9731 | this comp unit. */ | |
9732 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9733 | ||
c24bdb02 | 9734 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9735 | SECT_OFF_TEXT (objfile), |
9736 | 0); | |
c906108c | 9737 | |
43f3e411 | 9738 | if (cust != NULL) |
c906108c | 9739 | { |
df15bd07 | 9740 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9741 | |
8be455d7 JK |
9742 | /* Set symtab language to language from DW_AT_language. If the |
9743 | compilation is from a C file generated by language preprocessors, do | |
9744 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9745 | if (!(cu->language == language_c |
40e3ad0e | 9746 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9747 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9748 | |
9749 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9750 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9751 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9752 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9753 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9754 | |
9755 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9756 | needed, it would be wrong due to missing DW_AT_producer there. | |
9757 | ||
9758 | Still one can confuse GDB by using non-standard GCC compilation | |
9759 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9760 | */ |
ab260dad | 9761 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9762 | cust->locations_valid = 1; |
e0d00bc7 JK |
9763 | |
9764 | if (gcc_4_minor >= 5) | |
43f3e411 | 9765 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9766 | |
43f3e411 | 9767 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9768 | } |
9291a0cd | 9769 | |
976ca316 | 9770 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9771 | |
95554aad | 9772 | /* Push it for inclusion processing later. */ |
976ca316 | 9773 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9774 | |
9775 | /* Not needed any more. */ | |
c24bdb02 | 9776 | cu->reset_builder (); |
f4dc4d17 | 9777 | } |
45cfd468 | 9778 | |
8fc0b21d | 9779 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9780 | already been loaded into memory. */ |
9781 | ||
9782 | static void | |
8fc0b21d | 9783 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9784 | enum language pretend_language) |
9785 | { | |
976ca316 SM |
9786 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9787 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 9788 | struct compunit_symtab *cust; |
0186c6a7 DE |
9789 | struct signatured_type *sig_type; |
9790 | ||
8fc0b21d SM |
9791 | gdb_assert (cu->per_cu->is_debug_types); |
9792 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9793 | |
c89b44cd TT |
9794 | /* Clear the list here in case something was left over. */ |
9795 | cu->method_list.clear (); | |
f4dc4d17 | 9796 | |
f4dc4d17 DE |
9797 | cu->language = pretend_language; |
9798 | cu->language_defn = language_def (cu->language); | |
9799 | ||
9800 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9801 | process_die (cu->dies, cu); | |
9802 | ||
9803 | /* For now fudge the Go package. */ | |
9804 | if (cu->language == language_go) | |
9805 | fixup_go_packaging (cu); | |
9806 | ||
5f48f8f3 | 9807 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9808 | should be complete, and it should now be safe to compute all of the |
9809 | physnames. */ | |
9810 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9811 | |
c9317f21 TT |
9812 | if (cu->language == language_rust) |
9813 | rust_union_quirks (cu); | |
9814 | ||
f4dc4d17 DE |
9815 | /* TUs share symbol tables. |
9816 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9817 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9818 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 9819 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 9820 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 9821 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 9822 | { |
c24bdb02 KS |
9823 | buildsym_compunit *builder = cu->get_builder (); |
9824 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9825 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9826 | |
43f3e411 | 9827 | if (cust != NULL) |
f4dc4d17 DE |
9828 | { |
9829 | /* Set symtab language to language from DW_AT_language. If the | |
9830 | compilation is from a C file generated by language preprocessors, | |
9831 | do not set the language if it was already deduced by | |
9832 | start_subfile. */ | |
43f3e411 DE |
9833 | if (!(cu->language == language_c |
9834 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9835 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9836 | } |
9837 | } | |
9838 | else | |
9839 | { | |
c24bdb02 | 9840 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9841 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9842 | } |
9843 | ||
976ca316 | 9844 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
9845 | |
9846 | /* Not needed any more. */ | |
c24bdb02 | 9847 | cu->reset_builder (); |
c906108c SS |
9848 | } |
9849 | ||
95554aad TT |
9850 | /* Process an imported unit DIE. */ |
9851 | ||
9852 | static void | |
9853 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9854 | { | |
9855 | struct attribute *attr; | |
9856 | ||
f4dc4d17 DE |
9857 | /* For now we don't handle imported units in type units. */ |
9858 | if (cu->per_cu->is_debug_types) | |
9859 | { | |
9860 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9861 | " supported in type units [in module %s]"), | |
5e22e966 | 9862 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9863 | } |
9864 | ||
95554aad TT |
9865 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9866 | if (attr != NULL) | |
9867 | { | |
0826b30a | 9868 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 9869 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 9870 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 9871 | dwarf2_per_cu_data *per_cu |
ab432490 | 9872 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 9873 | |
58990295 TV |
9874 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9875 | into another compilation unit, at root level. Regard this as a hint, | |
9876 | and ignore it. */ | |
9877 | if (die->parent && die->parent->parent == NULL | |
9878 | && per_cu->unit_type == DW_UT_compile | |
9879 | && per_cu->lang == language_cplus) | |
9880 | return; | |
9881 | ||
69d751e3 | 9882 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 9883 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
9884 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
9885 | false, cu->language); | |
95554aad | 9886 | |
ae640021 | 9887 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9888 | } |
9889 | } | |
9890 | ||
4c8aa72d PA |
9891 | /* RAII object that represents a process_die scope: i.e., |
9892 | starts/finishes processing a DIE. */ | |
9893 | class process_die_scope | |
adde2bff | 9894 | { |
4c8aa72d PA |
9895 | public: |
9896 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9897 | : m_die (die), m_cu (cu) | |
9898 | { | |
9899 | /* We should only be processing DIEs not already in process. */ | |
9900 | gdb_assert (!m_die->in_process); | |
9901 | m_die->in_process = true; | |
9902 | } | |
8c3cb9fa | 9903 | |
4c8aa72d PA |
9904 | ~process_die_scope () |
9905 | { | |
9906 | m_die->in_process = false; | |
9907 | ||
9908 | /* If we're done processing the DIE for the CU that owns the line | |
9909 | header, we don't need the line header anymore. */ | |
9910 | if (m_cu->line_header_die_owner == m_die) | |
9911 | { | |
9912 | delete m_cu->line_header; | |
9913 | m_cu->line_header = NULL; | |
9914 | m_cu->line_header_die_owner = NULL; | |
9915 | } | |
9916 | } | |
9917 | ||
9918 | private: | |
9919 | die_info *m_die; | |
9920 | dwarf2_cu *m_cu; | |
9921 | }; | |
adde2bff | 9922 | |
c906108c SS |
9923 | /* Process a die and its children. */ |
9924 | ||
9925 | static void | |
e7c27a73 | 9926 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9927 | { |
4c8aa72d | 9928 | process_die_scope scope (die, cu); |
adde2bff | 9929 | |
c906108c SS |
9930 | switch (die->tag) |
9931 | { | |
9932 | case DW_TAG_padding: | |
9933 | break; | |
9934 | case DW_TAG_compile_unit: | |
95554aad | 9935 | case DW_TAG_partial_unit: |
e7c27a73 | 9936 | read_file_scope (die, cu); |
c906108c | 9937 | break; |
348e048f DE |
9938 | case DW_TAG_type_unit: |
9939 | read_type_unit_scope (die, cu); | |
9940 | break; | |
c906108c | 9941 | case DW_TAG_subprogram: |
0a4b0913 AB |
9942 | /* Nested subprograms in Fortran get a prefix. */ |
9943 | if (cu->language == language_fortran | |
9944 | && die->parent != NULL | |
9945 | && die->parent->tag == DW_TAG_subprogram) | |
9946 | cu->processing_has_namespace_info = true; | |
9947 | /* Fall through. */ | |
c906108c | 9948 | case DW_TAG_inlined_subroutine: |
edb3359d | 9949 | read_func_scope (die, cu); |
c906108c SS |
9950 | break; |
9951 | case DW_TAG_lexical_block: | |
14898363 L |
9952 | case DW_TAG_try_block: |
9953 | case DW_TAG_catch_block: | |
e7c27a73 | 9954 | read_lexical_block_scope (die, cu); |
c906108c | 9955 | break; |
216f72a1 | 9956 | case DW_TAG_call_site: |
96408a79 SA |
9957 | case DW_TAG_GNU_call_site: |
9958 | read_call_site_scope (die, cu); | |
9959 | break; | |
c906108c | 9960 | case DW_TAG_class_type: |
680b30c7 | 9961 | case DW_TAG_interface_type: |
c906108c SS |
9962 | case DW_TAG_structure_type: |
9963 | case DW_TAG_union_type: | |
134d01f1 | 9964 | process_structure_scope (die, cu); |
c906108c SS |
9965 | break; |
9966 | case DW_TAG_enumeration_type: | |
134d01f1 | 9967 | process_enumeration_scope (die, cu); |
c906108c | 9968 | break; |
134d01f1 | 9969 | |
f792889a DJ |
9970 | /* These dies have a type, but processing them does not create |
9971 | a symbol or recurse to process the children. Therefore we can | |
9972 | read them on-demand through read_type_die. */ | |
c906108c | 9973 | case DW_TAG_subroutine_type: |
72019c9c | 9974 | case DW_TAG_set_type: |
c906108c | 9975 | case DW_TAG_pointer_type: |
c906108c | 9976 | case DW_TAG_ptr_to_member_type: |
c906108c | 9977 | case DW_TAG_reference_type: |
4297a3f0 | 9978 | case DW_TAG_rvalue_reference_type: |
c906108c | 9979 | case DW_TAG_string_type: |
c906108c | 9980 | break; |
134d01f1 | 9981 | |
d8f62e84 TT |
9982 | case DW_TAG_array_type: |
9983 | /* We only need to handle this case for Ada -- in other | |
9984 | languages, it's normal for the compiler to emit a typedef | |
9985 | instead. */ | |
9986 | if (cu->language != language_ada) | |
9987 | break; | |
9988 | /* FALLTHROUGH */ | |
c906108c | 9989 | case DW_TAG_base_type: |
a02abb62 | 9990 | case DW_TAG_subrange_type: |
cb249c71 | 9991 | case DW_TAG_typedef: |
134d01f1 | 9992 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 9993 | DW_AT_name. */ |
f792889a | 9994 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9995 | break; |
c906108c | 9996 | case DW_TAG_common_block: |
e7c27a73 | 9997 | read_common_block (die, cu); |
c906108c SS |
9998 | break; |
9999 | case DW_TAG_common_inclusion: | |
10000 | break; | |
d9fa45fe | 10001 | case DW_TAG_namespace: |
9068261f | 10002 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10003 | read_namespace (die, cu); |
d9fa45fe | 10004 | break; |
5d7cb8df | 10005 | case DW_TAG_module: |
9068261f | 10006 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10007 | read_module (die, cu); |
10008 | break; | |
d9fa45fe | 10009 | case DW_TAG_imported_declaration: |
9068261f | 10010 | cu->processing_has_namespace_info = true; |
74921315 KS |
10011 | if (read_namespace_alias (die, cu)) |
10012 | break; | |
86a73007 TT |
10013 | /* The declaration is not a global namespace alias. */ |
10014 | /* Fall through. */ | |
d9fa45fe | 10015 | case DW_TAG_imported_module: |
9068261f | 10016 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10017 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10018 | || cu->language != language_fortran)) | |
b98664d3 | 10019 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10020 | dwarf_tag_name (die->tag)); |
10021 | read_import_statement (die, cu); | |
d9fa45fe | 10022 | break; |
95554aad TT |
10023 | |
10024 | case DW_TAG_imported_unit: | |
10025 | process_imported_unit_die (die, cu); | |
10026 | break; | |
10027 | ||
71a3c369 TT |
10028 | case DW_TAG_variable: |
10029 | read_variable (die, cu); | |
10030 | break; | |
10031 | ||
c906108c | 10032 | default: |
e7c27a73 | 10033 | new_symbol (die, NULL, cu); |
c906108c SS |
10034 | break; |
10035 | } | |
10036 | } | |
ca69b9e6 DE |
10037 | \f |
10038 | /* DWARF name computation. */ | |
c906108c | 10039 | |
94af9270 KS |
10040 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10041 | needs to have the name of the scope prepended to the name listed in the | |
10042 | die. */ | |
10043 | ||
10044 | static int | |
10045 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10046 | { | |
1c809c68 TT |
10047 | struct attribute *attr; |
10048 | ||
94af9270 KS |
10049 | switch (die->tag) |
10050 | { | |
10051 | case DW_TAG_namespace: | |
10052 | case DW_TAG_typedef: | |
10053 | case DW_TAG_class_type: | |
10054 | case DW_TAG_interface_type: | |
10055 | case DW_TAG_structure_type: | |
10056 | case DW_TAG_union_type: | |
10057 | case DW_TAG_enumeration_type: | |
10058 | case DW_TAG_enumerator: | |
10059 | case DW_TAG_subprogram: | |
08a76f8a | 10060 | case DW_TAG_inlined_subroutine: |
94af9270 | 10061 | case DW_TAG_member: |
74921315 | 10062 | case DW_TAG_imported_declaration: |
94af9270 KS |
10063 | return 1; |
10064 | ||
10065 | case DW_TAG_variable: | |
c2b0a229 | 10066 | case DW_TAG_constant: |
94af9270 KS |
10067 | /* We only need to prefix "globally" visible variables. These include |
10068 | any variable marked with DW_AT_external or any variable that | |
10069 | lives in a namespace. [Variables in anonymous namespaces | |
10070 | require prefixing, but they are not DW_AT_external.] */ | |
10071 | ||
10072 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10073 | { | |
10074 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10075 | |
94af9270 KS |
10076 | return die_needs_namespace (die_specification (die, &spec_cu), |
10077 | spec_cu); | |
10078 | } | |
10079 | ||
1c809c68 | 10080 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10081 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10082 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10083 | return 0; |
10084 | /* A variable in a lexical block of some kind does not need a | |
10085 | namespace, even though in C++ such variables may be external | |
10086 | and have a mangled name. */ | |
10087 | if (die->parent->tag == DW_TAG_lexical_block | |
10088 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10089 | || die->parent->tag == DW_TAG_catch_block |
10090 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10091 | return 0; |
10092 | return 1; | |
94af9270 KS |
10093 | |
10094 | default: | |
10095 | return 0; | |
10096 | } | |
10097 | } | |
10098 | ||
73b9be8b KS |
10099 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10100 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10101 | defined for the given DIE. */ | |
10102 | ||
10103 | static struct attribute * | |
10104 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10105 | { | |
10106 | struct attribute *attr; | |
10107 | ||
10108 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10109 | if (attr == NULL) | |
10110 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10111 | ||
10112 | return attr; | |
10113 | } | |
10114 | ||
10115 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10116 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10117 | defined for the given DIE. */ | |
10118 | ||
10119 | static const char * | |
10120 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10121 | { | |
10122 | const char *linkage_name; | |
10123 | ||
10124 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10125 | if (linkage_name == NULL) | |
10126 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10127 | ||
787de330 TT |
10128 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10129 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10130 | if (cu->language == language_rust && linkage_name != NULL | |
10131 | && strchr (linkage_name, '{') != NULL) | |
10132 | linkage_name = NULL; | |
10133 | ||
73b9be8b KS |
10134 | return linkage_name; |
10135 | } | |
10136 | ||
94af9270 | 10137 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10138 | compute the physname for the object, which include a method's: |
9c37b5ae | 10139 | - formal parameters (C++), |
a766d390 | 10140 | - receiver type (Go), |
a766d390 DE |
10141 | |
10142 | The term "physname" is a bit confusing. | |
10143 | For C++, for example, it is the demangled name. | |
10144 | For Go, for example, it's the mangled name. | |
94af9270 | 10145 | |
af6b7be1 JB |
10146 | For Ada, return the DIE's linkage name rather than the fully qualified |
10147 | name. PHYSNAME is ignored.. | |
10148 | ||
5989a64e | 10149 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10150 | canonicalized. */ |
94af9270 KS |
10151 | |
10152 | static const char * | |
15d034d0 TT |
10153 | dwarf2_compute_name (const char *name, |
10154 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10155 | int physname) |
10156 | { | |
5e22e966 | 10157 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10158 | |
94af9270 KS |
10159 | if (name == NULL) |
10160 | name = dwarf2_name (die, cu); | |
10161 | ||
2ee7123e DE |
10162 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10163 | but otherwise compute it by typename_concat inside GDB. | |
10164 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10165 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10166 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10167 | will set the demangled name to the result of dwarf2_full_name, and it is |
10168 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10169 | if (cu->language == language_ada |
10170 | || (cu->language == language_fortran && physname)) | |
10171 | { | |
10172 | /* For Ada unit, we prefer the linkage name over the name, as | |
10173 | the former contains the exported name, which the user expects | |
10174 | to be able to reference. Ideally, we want the user to be able | |
10175 | to reference this entity using either natural or linkage name, | |
10176 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10177 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10178 | |
2ee7123e DE |
10179 | if (linkage_name != NULL) |
10180 | return linkage_name; | |
f55ee35c JK |
10181 | } |
10182 | ||
94af9270 KS |
10183 | /* These are the only languages we know how to qualify names in. */ |
10184 | if (name != NULL | |
9c37b5ae | 10185 | && (cu->language == language_cplus |
c44af4eb TT |
10186 | || cu->language == language_fortran || cu->language == language_d |
10187 | || cu->language == language_rust)) | |
94af9270 KS |
10188 | { |
10189 | if (die_needs_namespace (die, cu)) | |
10190 | { | |
0d5cff50 | 10191 | const char *prefix; |
34a68019 | 10192 | const char *canonical_name = NULL; |
94af9270 | 10193 | |
d7e74731 PA |
10194 | string_file buf; |
10195 | ||
94af9270 | 10196 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10197 | if (*prefix != '\0') |
10198 | { | |
43816ebc TT |
10199 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10200 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10201 | |
43816ebc | 10202 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10203 | } |
10204 | else | |
d7e74731 | 10205 | buf.puts (name); |
94af9270 | 10206 | |
98bfdba5 PA |
10207 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10208 | as children with DW_TAG_template_type_param or | |
10209 | DW_TAG_value_type_param. If the latter, add them to the name | |
10210 | here. If the name already has template parameters, then | |
10211 | skip this step; some versions of GCC emit both, and | |
10212 | it is more efficient to use the pre-computed name. | |
10213 | ||
10214 | Something to keep in mind about this process: it is very | |
10215 | unlikely, or in some cases downright impossible, to produce | |
10216 | something that will match the mangled name of a function. | |
10217 | If the definition of the function has the same debug info, | |
10218 | we should be able to match up with it anyway. But fallbacks | |
10219 | using the minimal symbol, for instance to find a method | |
10220 | implemented in a stripped copy of libstdc++, will not work. | |
10221 | If we do not have debug info for the definition, we will have to | |
10222 | match them up some other way. | |
10223 | ||
10224 | When we do name matching there is a related problem with function | |
10225 | templates; two instantiated function templates are allowed to | |
10226 | differ only by their return types, which we do not add here. */ | |
10227 | ||
10228 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10229 | { | |
10230 | struct attribute *attr; | |
10231 | struct die_info *child; | |
10232 | int first = 1; | |
2c75ccb2 | 10233 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10234 | |
10235 | die->building_fullname = 1; | |
10236 | ||
10237 | for (child = die->child; child != NULL; child = child->sibling) | |
10238 | { | |
10239 | struct type *type; | |
12df843f | 10240 | LONGEST value; |
d521ce57 | 10241 | const gdb_byte *bytes; |
98bfdba5 PA |
10242 | struct dwarf2_locexpr_baton *baton; |
10243 | struct value *v; | |
10244 | ||
10245 | if (child->tag != DW_TAG_template_type_param | |
10246 | && child->tag != DW_TAG_template_value_param) | |
10247 | continue; | |
10248 | ||
10249 | if (first) | |
10250 | { | |
d7e74731 | 10251 | buf.puts ("<"); |
98bfdba5 PA |
10252 | first = 0; |
10253 | } | |
10254 | else | |
d7e74731 | 10255 | buf.puts (", "); |
98bfdba5 PA |
10256 | |
10257 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10258 | if (attr == NULL) | |
10259 | { | |
b98664d3 | 10260 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10261 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10262 | continue; |
10263 | } | |
10264 | type = die_type (child, cu); | |
10265 | ||
10266 | if (child->tag == DW_TAG_template_type_param) | |
10267 | { | |
2c75ccb2 AB |
10268 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10269 | &type_print_raw_options); | |
98bfdba5 PA |
10270 | continue; |
10271 | } | |
10272 | ||
10273 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10274 | if (attr == NULL) | |
10275 | { | |
b98664d3 | 10276 | complaint (_("template parameter missing " |
3e43a32a | 10277 | "DW_AT_const_value")); |
d7e74731 | 10278 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10279 | continue; |
10280 | } | |
10281 | ||
10282 | dwarf2_const_value_attr (attr, type, name, | |
10283 | &cu->comp_unit_obstack, cu, | |
10284 | &value, &bytes, &baton); | |
10285 | ||
20ce4123 | 10286 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10287 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10288 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10289 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10290 | else |
10291 | { | |
10292 | struct value_print_options opts; | |
10293 | ||
10294 | if (baton != NULL) | |
10295 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10296 | baton->data, | |
10297 | baton->size, | |
9f47c707 SM |
10298 | baton->per_cu, |
10299 | baton->per_objfile); | |
98bfdba5 PA |
10300 | else if (bytes != NULL) |
10301 | { | |
10302 | v = allocate_value (type); | |
10303 | memcpy (value_contents_writeable (v), bytes, | |
10304 | TYPE_LENGTH (type)); | |
10305 | } | |
10306 | else | |
10307 | v = value_from_longest (type, value); | |
10308 | ||
3e43a32a MS |
10309 | /* Specify decimal so that we do not depend on |
10310 | the radix. */ | |
98bfdba5 PA |
10311 | get_formatted_print_options (&opts, 'd'); |
10312 | opts.raw = 1; | |
d7e74731 | 10313 | value_print (v, &buf, &opts); |
98bfdba5 | 10314 | release_value (v); |
98bfdba5 PA |
10315 | } |
10316 | } | |
10317 | ||
10318 | die->building_fullname = 0; | |
10319 | ||
10320 | if (!first) | |
10321 | { | |
10322 | /* Close the argument list, with a space if necessary | |
10323 | (nested templates). */ | |
d7e74731 PA |
10324 | if (!buf.empty () && buf.string ().back () == '>') |
10325 | buf.puts (" >"); | |
98bfdba5 | 10326 | else |
d7e74731 | 10327 | buf.puts (">"); |
98bfdba5 PA |
10328 | } |
10329 | } | |
10330 | ||
9c37b5ae | 10331 | /* For C++ methods, append formal parameter type |
94af9270 | 10332 | information, if PHYSNAME. */ |
6e70227d | 10333 | |
94af9270 | 10334 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10335 | && cu->language == language_cplus) |
94af9270 KS |
10336 | { |
10337 | struct type *type = read_type_die (die, cu); | |
10338 | ||
d7e74731 | 10339 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10340 | &type_print_raw_options); |
94af9270 | 10341 | |
9c37b5ae | 10342 | if (cu->language == language_cplus) |
94af9270 | 10343 | { |
60430eff DJ |
10344 | /* Assume that an artificial first parameter is |
10345 | "this", but do not crash if it is not. RealView | |
10346 | marks unnamed (and thus unused) parameters as | |
10347 | artificial; there is no way to differentiate | |
10348 | the two cases. */ | |
1f704f76 | 10349 | if (type->num_fields () > 0 |
94af9270 | 10350 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10351 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10352 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10353 | buf.puts (" const"); |
94af9270 KS |
10354 | } |
10355 | } | |
10356 | ||
d7e74731 | 10357 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10358 | |
10359 | if (cu->language == language_cplus) | |
34a68019 | 10360 | canonical_name |
322a8516 | 10361 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10362 | objfile); |
34a68019 TT |
10363 | |
10364 | /* If we only computed INTERMEDIATE_NAME, or if | |
10365 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10366 | intern it. */ |
322a8516 | 10367 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10368 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10369 | else |
10370 | name = canonical_name; | |
94af9270 KS |
10371 | } |
10372 | } | |
10373 | ||
10374 | return name; | |
10375 | } | |
10376 | ||
0114d602 DJ |
10377 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10378 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10379 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10380 | not have a name. NAME may either be from a previous call to |
10381 | dwarf2_name or NULL. | |
10382 | ||
9c37b5ae | 10383 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10384 | |
10385 | static const char * | |
15d034d0 | 10386 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10387 | { |
94af9270 KS |
10388 | return dwarf2_compute_name (name, die, cu, 0); |
10389 | } | |
0114d602 | 10390 | |
94af9270 KS |
10391 | /* Construct a physname for the given DIE in CU. NAME may either be |
10392 | from a previous call to dwarf2_name or NULL. The result will be | |
10393 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10394 | name. | |
0114d602 | 10395 | |
9c37b5ae | 10396 | The output string will be canonicalized (if C++). */ |
0114d602 | 10397 | |
94af9270 | 10398 | static const char * |
15d034d0 | 10399 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10400 | { |
5e22e966 | 10401 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10402 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10403 | int need_copy = 1; |
10404 | ||
10405 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10406 | on its own. */ | |
10407 | if (!die_needs_namespace (die, cu)) | |
10408 | return dwarf2_compute_name (name, die, cu, 1); | |
10409 | ||
906bb4c5 TT |
10410 | if (cu->language != language_rust) |
10411 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10412 | |
10413 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10414 | has computed. */ | |
791afaa2 | 10415 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10416 | if (mangled != NULL) |
900e11f9 | 10417 | { |
900e11f9 | 10418 | |
d3355e4d | 10419 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10420 | { |
10421 | /* Do nothing (do not demangle the symbol name). */ | |
10422 | } | |
a766d390 DE |
10423 | else |
10424 | { | |
0eb876f5 JB |
10425 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10426 | their return type. It is easier for GDB users to search | |
10427 | for such functions as `name(params)' than `long name(params)'. | |
10428 | In such case the minimal symbol names do not match the full | |
10429 | symbol names but for template functions there is never a need | |
10430 | to look up their definition from their declaration so | |
10431 | the only disadvantage remains the minimal symbol variant | |
10432 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10433 | demangled.reset (gdb_demangle (mangled, |
10434 | (DMGL_PARAMS | DMGL_ANSI | |
10435 | | DMGL_RET_DROP))); | |
a766d390 | 10436 | } |
900e11f9 | 10437 | if (demangled) |
791afaa2 | 10438 | canon = demangled.get (); |
900e11f9 JK |
10439 | else |
10440 | { | |
10441 | canon = mangled; | |
10442 | need_copy = 0; | |
10443 | } | |
10444 | } | |
10445 | ||
10446 | if (canon == NULL || check_physname) | |
10447 | { | |
10448 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10449 | ||
10450 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10451 | { | |
10452 | /* It may not mean a bug in GDB. The compiler could also | |
10453 | compute DW_AT_linkage_name incorrectly. But in such case | |
10454 | GDB would need to be bug-to-bug compatible. */ | |
10455 | ||
b98664d3 | 10456 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10457 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10458 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10459 | objfile_name (objfile)); |
900e11f9 JK |
10460 | |
10461 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10462 | is available here - over computed PHYSNAME. It is safer | |
10463 | against both buggy GDB and buggy compilers. */ | |
10464 | ||
10465 | retval = canon; | |
10466 | } | |
10467 | else | |
10468 | { | |
10469 | retval = physname; | |
10470 | need_copy = 0; | |
10471 | } | |
10472 | } | |
10473 | else | |
10474 | retval = canon; | |
10475 | ||
10476 | if (need_copy) | |
be1e3d3e | 10477 | retval = objfile->intern (retval); |
900e11f9 | 10478 | |
900e11f9 | 10479 | return retval; |
0114d602 DJ |
10480 | } |
10481 | ||
74921315 KS |
10482 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10483 | a new symbol for it. | |
10484 | ||
10485 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10486 | ||
10487 | static int | |
10488 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10489 | { | |
10490 | struct attribute *attr; | |
10491 | ||
10492 | /* If the die does not have a name, this is not a namespace | |
10493 | alias. */ | |
10494 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10495 | if (attr != NULL) | |
10496 | { | |
10497 | int num; | |
10498 | struct die_info *d = die; | |
10499 | struct dwarf2_cu *imported_cu = cu; | |
10500 | ||
10501 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10502 | keep inspecting DIEs until we hit the underlying import. */ | |
10503 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10504 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10505 | { | |
10506 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10507 | if (attr == NULL) | |
10508 | break; | |
10509 | ||
10510 | d = follow_die_ref (d, attr, &imported_cu); | |
10511 | if (d->tag != DW_TAG_imported_declaration) | |
10512 | break; | |
10513 | } | |
10514 | ||
10515 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10516 | { | |
b98664d3 | 10517 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10518 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10519 | return 0; |
10520 | } | |
10521 | ||
10522 | if (attr != NULL) | |
10523 | { | |
10524 | struct type *type; | |
0826b30a | 10525 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10526 | |
aa66c379 | 10527 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10528 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10529 | { |
10530 | /* This declaration is a global namespace alias. Add | |
10531 | a symbol for it whose type is the aliased namespace. */ | |
10532 | new_symbol (die, type, cu); | |
10533 | return 1; | |
10534 | } | |
10535 | } | |
10536 | } | |
10537 | ||
10538 | return 0; | |
10539 | } | |
10540 | ||
22cee43f | 10541 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10542 | current context for CU. |
22cee43f PMR |
10543 | |
10544 | For Ada, imported declarations can materialize renamings, which *may* be | |
10545 | global. However it is impossible (for now?) in DWARF to distinguish | |
10546 | "external" imported declarations and "static" ones. As all imported | |
10547 | declarations seem to be static in all other languages, make them all CU-wide | |
10548 | global only in Ada. */ | |
10549 | ||
10550 | static struct using_direct ** | |
804d2729 | 10551 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10552 | { |
c24bdb02 KS |
10553 | if (cu->language == language_ada |
10554 | && cu->get_builder ()->outermost_context_p ()) | |
10555 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10556 | else |
c24bdb02 | 10557 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10558 | } |
10559 | ||
27aa8d6a SW |
10560 | /* Read the import statement specified by the given die and record it. */ |
10561 | ||
10562 | static void | |
10563 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10564 | { | |
5e22e966 | 10565 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10566 | struct attribute *import_attr; |
32019081 | 10567 | struct die_info *imported_die, *child_die; |
de4affc9 | 10568 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10569 | const char *imported_name; |
794684b6 | 10570 | const char *imported_name_prefix; |
13387711 SW |
10571 | const char *canonical_name; |
10572 | const char *import_alias; | |
10573 | const char *imported_declaration = NULL; | |
794684b6 | 10574 | const char *import_prefix; |
eb1e02fd | 10575 | std::vector<const char *> excludes; |
13387711 | 10576 | |
27aa8d6a SW |
10577 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10578 | if (import_attr == NULL) | |
10579 | { | |
b98664d3 | 10580 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10581 | dwarf_tag_name (die->tag)); |
10582 | return; | |
10583 | } | |
10584 | ||
de4affc9 CC |
10585 | imported_cu = cu; |
10586 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10587 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10588 | if (imported_name == NULL) |
10589 | { | |
10590 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10591 | ||
dda83cd7 SM |
10592 | The import in the following code: |
10593 | namespace A | |
10594 | { | |
10595 | typedef int B; | |
10596 | } | |
10597 | ||
10598 | int main () | |
10599 | { | |
10600 | using A::B; | |
10601 | B b; | |
10602 | return b; | |
10603 | } | |
10604 | ||
10605 | ... | |
10606 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10607 | <52> DW_AT_decl_file : 1 | |
10608 | <53> DW_AT_decl_line : 6 | |
10609 | <54> DW_AT_import : <0x75> | |
10610 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10611 | <59> DW_AT_name : B | |
10612 | <5b> DW_AT_decl_file : 1 | |
10613 | <5c> DW_AT_decl_line : 2 | |
10614 | <5d> DW_AT_type : <0x6e> | |
10615 | ... | |
10616 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10617 | <76> DW_AT_byte_size : 4 | |
10618 | <77> DW_AT_encoding : 5 (signed) | |
10619 | ||
10620 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10621 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10622 | return; |
10623 | } | |
10624 | ||
82856980 SW |
10625 | /* Figure out the local name after import. */ |
10626 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10627 | |
794684b6 SW |
10628 | /* Figure out where the statement is being imported to. */ |
10629 | import_prefix = determine_prefix (die, cu); | |
10630 | ||
10631 | /* Figure out what the scope of the imported die is and prepend it | |
10632 | to the name of the imported die. */ | |
de4affc9 | 10633 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10634 | |
f55ee35c JK |
10635 | if (imported_die->tag != DW_TAG_namespace |
10636 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10637 | { |
13387711 SW |
10638 | imported_declaration = imported_name; |
10639 | canonical_name = imported_name_prefix; | |
794684b6 | 10640 | } |
13387711 | 10641 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10642 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10643 | imported_name_prefix, |
10644 | (cu->language == language_d ? "." : "::"), | |
10645 | imported_name, (char *) NULL); | |
13387711 SW |
10646 | else |
10647 | canonical_name = imported_name; | |
794684b6 | 10648 | |
32019081 JK |
10649 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10650 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10651 | child_die = child_die->sibling) |
32019081 JK |
10652 | { |
10653 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10654 | represented by an imported module entry with an import attribute | |
10655 | referring to the module and owned entries corresponding to those | |
10656 | entities that are renamed as part of being imported. */ | |
10657 | ||
10658 | if (child_die->tag != DW_TAG_imported_declaration) | |
10659 | { | |
b98664d3 | 10660 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10661 | "- DIE at %s [in module %s]"), |
10662 | sect_offset_str (child_die->sect_off), | |
10663 | objfile_name (objfile)); | |
32019081 JK |
10664 | continue; |
10665 | } | |
10666 | ||
10667 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10668 | if (import_attr == NULL) | |
10669 | { | |
b98664d3 | 10670 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10671 | dwarf_tag_name (child_die->tag)); |
10672 | continue; | |
10673 | } | |
10674 | ||
10675 | imported_cu = cu; | |
10676 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10677 | &imported_cu); | |
10678 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10679 | if (imported_name == NULL) | |
10680 | { | |
b98664d3 | 10681 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10682 | "imported name - DIE at %s [in module %s]"), |
10683 | sect_offset_str (child_die->sect_off), | |
10684 | objfile_name (objfile)); | |
32019081 JK |
10685 | continue; |
10686 | } | |
10687 | ||
eb1e02fd | 10688 | excludes.push_back (imported_name); |
32019081 JK |
10689 | |
10690 | process_die (child_die, cu); | |
10691 | } | |
10692 | ||
804d2729 | 10693 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10694 | import_prefix, |
10695 | canonical_name, | |
10696 | import_alias, | |
10697 | imported_declaration, | |
10698 | excludes, | |
10699 | 0, | |
10700 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10701 | } |
10702 | ||
5230b05a WT |
10703 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10704 | types, but gives them a size of zero. Starting with version 14, | |
10705 | ICC is compatible with GCC. */ | |
10706 | ||
9068261f | 10707 | static bool |
5230b05a WT |
10708 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10709 | { | |
10710 | if (!cu->checked_producer) | |
10711 | check_producer (cu); | |
10712 | ||
10713 | return cu->producer_is_icc_lt_14; | |
10714 | } | |
10715 | ||
eb77c9df AB |
10716 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10717 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10718 | which says that void functions should not have a DW_AT_type. */ | |
10719 | ||
10720 | static bool | |
10721 | producer_is_icc (struct dwarf2_cu *cu) | |
10722 | { | |
10723 | if (!cu->checked_producer) | |
10724 | check_producer (cu); | |
10725 | ||
10726 | return cu->producer_is_icc; | |
10727 | } | |
10728 | ||
1b80a9fa JK |
10729 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10730 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10731 | this, it was first present in GCC release 4.3.0. */ | |
10732 | ||
9068261f | 10733 | static bool |
1b80a9fa JK |
10734 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10735 | { | |
10736 | if (!cu->checked_producer) | |
10737 | check_producer (cu); | |
10738 | ||
10739 | return cu->producer_is_gcc_lt_4_3; | |
10740 | } | |
10741 | ||
d721ba37 PA |
10742 | static file_and_directory |
10743 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10744 | { |
d721ba37 PA |
10745 | file_and_directory res; |
10746 | ||
9291a0cd TT |
10747 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10748 | is not a source language identifier. */ | |
d721ba37 PA |
10749 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10750 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10751 | |
d721ba37 PA |
10752 | if (res.comp_dir == NULL |
10753 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10754 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10755 | { |
d721ba37 PA |
10756 | res.comp_dir_storage = ldirname (res.name); |
10757 | if (!res.comp_dir_storage.empty ()) | |
10758 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10759 | } |
d721ba37 | 10760 | if (res.comp_dir != NULL) |
9291a0cd TT |
10761 | { |
10762 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10763 | directory, get rid of it. */ | |
d721ba37 | 10764 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10765 | |
d721ba37 PA |
10766 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10767 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10768 | } |
10769 | ||
d721ba37 PA |
10770 | if (res.name == NULL) |
10771 | res.name = "<unknown>"; | |
10772 | ||
10773 | return res; | |
9291a0cd TT |
10774 | } |
10775 | ||
f4dc4d17 DE |
10776 | /* Handle DW_AT_stmt_list for a compilation unit. |
10777 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10778 | COMP_DIR is the compilation directory. LOWPC is passed to |
10779 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10780 | |
10781 | static void | |
10782 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10783 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10784 | { |
976ca316 | 10785 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10786 | struct attribute *attr; |
527f3840 JK |
10787 | struct line_header line_header_local; |
10788 | hashval_t line_header_local_hash; | |
527f3840 JK |
10789 | void **slot; |
10790 | int decode_mapping; | |
2ab95328 | 10791 | |
f4dc4d17 DE |
10792 | gdb_assert (! cu->per_cu->is_debug_types); |
10793 | ||
2ab95328 | 10794 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 10795 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
10796 | return; |
10797 | ||
d4df075e | 10798 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
10799 | |
10800 | /* The line header hash table is only created if needed (it exists to | |
10801 | prevent redundant reading of the line table for partial_units). | |
10802 | If we're given a partial_unit, we'll need it. If we're given a | |
10803 | compile_unit, then use the line header hash table if it's already | |
10804 | created, but don't create one just yet. */ | |
10805 | ||
976ca316 | 10806 | if (per_objfile->line_header_hash == NULL |
527f3840 | 10807 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10808 | { |
976ca316 | 10809 | per_objfile->line_header_hash |
d15acc42 TT |
10810 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10811 | line_header_eq_voidp, | |
10812 | free_line_header_voidp, | |
10813 | xcalloc, xfree)); | |
527f3840 | 10814 | } |
2ab95328 | 10815 | |
9c541725 | 10816 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10817 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10818 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 10819 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 10820 | { |
976ca316 | 10821 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10822 | &line_header_local, |
10823 | line_header_local_hash, NO_INSERT); | |
10824 | ||
10825 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10826 | is not present in *SLOT (since if there is something in *SLOT then | |
10827 | it will be for a partial_unit). */ | |
10828 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10829 | { |
527f3840 | 10830 | gdb_assert (*slot != NULL); |
9a3c8263 | 10831 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10832 | return; |
dee91e82 | 10833 | } |
2ab95328 | 10834 | } |
527f3840 JK |
10835 | |
10836 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10837 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10838 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10839 | if (lh == NULL) | |
527f3840 | 10840 | return; |
4c8aa72d PA |
10841 | |
10842 | cu->line_header = lh.release (); | |
10843 | cu->line_header_die_owner = die; | |
527f3840 | 10844 | |
976ca316 | 10845 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
10846 | slot = NULL; |
10847 | else | |
10848 | { | |
976ca316 | 10849 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10850 | &line_header_local, |
10851 | line_header_local_hash, INSERT); | |
10852 | gdb_assert (slot != NULL); | |
10853 | } | |
10854 | if (slot != NULL && *slot == NULL) | |
10855 | { | |
10856 | /* This newly decoded line number information unit will be owned | |
10857 | by line_header_hash hash table. */ | |
10858 | *slot = cu->line_header; | |
4c8aa72d | 10859 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10860 | } |
10861 | else | |
10862 | { | |
10863 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 10864 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
10865 | line_header for this CU - it may happen at most once for each line |
10866 | number information unit. And if we're not using line_header_hash | |
10867 | then this is what we want as well. */ | |
10868 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10869 | } |
10870 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10871 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10872 | decode_mapping); | |
fff8551c | 10873 | |
2ab95328 TT |
10874 | } |
10875 | ||
95554aad | 10876 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10877 | |
c906108c | 10878 | static void |
e7c27a73 | 10879 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10880 | { |
976ca316 SM |
10881 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10882 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10883 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10884 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10885 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10886 | struct attribute *attr; | |
c906108c | 10887 | struct die_info *child_die; |
e142c38c | 10888 | CORE_ADDR baseaddr; |
6e70227d | 10889 | |
380618d6 | 10890 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10891 | baseaddr = objfile->text_section_offset (); |
c906108c | 10892 | |
fae299cd | 10893 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10894 | |
10895 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10896 | from finish_block. */ | |
2acceee2 | 10897 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10898 | lowpc = highpc; |
3e29f34a | 10899 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10900 | |
d721ba37 | 10901 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10902 | |
f4b8a18d KW |
10903 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10904 | standardised yet. As a workaround for the language detection we fall | |
10905 | back to the DW_AT_producer string. */ | |
10906 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10907 | cu->language = language_opencl; | |
10908 | ||
3019eac3 DE |
10909 | /* Similar hack for Go. */ |
10910 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10911 | set_cu_language (DW_LANG_Go, cu); | |
10912 | ||
c24bdb02 | 10913 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10914 | |
10915 | /* Decode line number information if present. We do this before | |
10916 | processing child DIEs, so that the line header table is available | |
10917 | for DW_AT_decl_file. */ | |
d721ba37 | 10918 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10919 | |
10920 | /* Process all dies in compilation unit. */ | |
10921 | if (die->child != NULL) | |
10922 | { | |
10923 | child_die = die->child; | |
10924 | while (child_die && child_die->tag) | |
10925 | { | |
10926 | process_die (child_die, cu); | |
436c571c | 10927 | child_die = child_die->sibling; |
3019eac3 DE |
10928 | } |
10929 | } | |
10930 | ||
10931 | /* Decode macro information, if present. Dwarf 2 macro information | |
10932 | refers to information in the line number info statement program | |
10933 | header, so we can only read it if we've read the header | |
10934 | successfully. */ | |
0af92d60 JK |
10935 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10936 | if (attr == NULL) | |
10937 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 10938 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
10939 | { |
10940 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10941 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10942 | |
529908cb | 10943 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
10944 | } |
10945 | else | |
10946 | { | |
10947 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 10948 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 10949 | { |
529908cb | 10950 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 10951 | |
43f3e411 | 10952 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10953 | } |
10954 | } | |
3019eac3 DE |
10955 | } |
10956 | ||
c24bdb02 KS |
10957 | void |
10958 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10959 | { |
f4dc4d17 DE |
10960 | struct type_unit_group *tu_group; |
10961 | int first_time; | |
3019eac3 | 10962 | struct attribute *attr; |
9c541725 | 10963 | unsigned int i; |
0186c6a7 | 10964 | struct signatured_type *sig_type; |
3019eac3 | 10965 | |
f4dc4d17 | 10966 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10967 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10968 | |
c24bdb02 | 10969 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10970 | |
f4dc4d17 | 10971 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10972 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10973 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10974 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10975 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10976 | |
10977 | /* If we've already processed this stmt_list there's no real need to | |
10978 | do it again, we could fake it and just recreate the part we need | |
10979 | (file name,index -> symtab mapping). If data shows this optimization | |
10980 | is useful we can do it then. */ | |
8adb8487 TT |
10981 | type_unit_group_unshareable *tug_unshare |
10982 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
10983 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
10984 | |
10985 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10986 | debug info. */ | |
fff8551c | 10987 | line_header_up lh; |
d4df075e | 10988 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 10989 | { |
d4df075e | 10990 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 10991 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10992 | } |
10993 | if (lh == NULL) | |
10994 | { | |
10995 | if (first_time) | |
c24bdb02 | 10996 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10997 | else |
10998 | { | |
8adb8487 | 10999 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11000 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11001 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11002 | m_builder.reset (new struct buildsym_compunit |
11003 | (COMPUNIT_OBJFILE (cust), "", | |
11004 | COMPUNIT_DIRNAME (cust), | |
11005 | compunit_language (cust), | |
11006 | 0, cust)); | |
770479f2 | 11007 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11008 | } |
f4dc4d17 | 11009 | return; |
3019eac3 DE |
11010 | } |
11011 | ||
c24bdb02 KS |
11012 | line_header = lh.release (); |
11013 | line_header_die_owner = die; | |
3019eac3 | 11014 | |
f4dc4d17 DE |
11015 | if (first_time) |
11016 | { | |
c24bdb02 | 11017 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11018 | |
1fd60fc0 DE |
11019 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11020 | still initializing it, and our caller (a few levels up) | |
11021 | process_full_type_unit still needs to know if this is the first | |
11022 | time. */ | |
11023 | ||
8adb8487 | 11024 | tug_unshare->symtabs |
4ac93832 TT |
11025 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11026 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11027 | |
7ba99d21 AT |
11028 | auto &file_names = line_header->file_names (); |
11029 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11030 | { |
7ba99d21 | 11031 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11032 | dwarf2_start_subfile (this, fe.name, |
11033 | fe.include_dir (line_header)); | |
11034 | buildsym_compunit *b = get_builder (); | |
11035 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11036 | { |
4c8aa72d PA |
11037 | /* NOTE: start_subfile will recognize when it's been |
11038 | passed a file it has already seen. So we can't | |
11039 | assume there's a simple mapping from | |
11040 | cu->line_header->file_names to subfiles, plus | |
11041 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11042 | b->get_current_subfile ()->symtab |
11043 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11044 | } |
11045 | ||
c24bdb02 | 11046 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11047 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11048 | } |
11049 | } | |
11050 | else | |
3019eac3 | 11051 | { |
c24bdb02 | 11052 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11053 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11054 | m_builder.reset (new struct buildsym_compunit |
11055 | (COMPUNIT_OBJFILE (cust), "", | |
11056 | COMPUNIT_DIRNAME (cust), | |
11057 | compunit_language (cust), | |
11058 | 0, cust)); | |
770479f2 | 11059 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11060 | |
7ba99d21 AT |
11061 | auto &file_names = line_header->file_names (); |
11062 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11063 | { |
7ba99d21 | 11064 | file_entry &fe = file_names[i]; |
8adb8487 | 11065 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11066 | } |
3019eac3 DE |
11067 | } |
11068 | ||
f4dc4d17 DE |
11069 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11070 | so they don't have a "real" (so to speak) symtab anyway. | |
11071 | There is later code that will assign the main symtab to all symbols | |
11072 | that don't have one. We need to handle the case of a symbol with a | |
11073 | missing symtab (DW_AT_decl_file) anyway. */ | |
11074 | } | |
3019eac3 | 11075 | |
f4dc4d17 DE |
11076 | /* Process DW_TAG_type_unit. |
11077 | For TUs we want to skip the first top level sibling if it's not the | |
11078 | actual type being defined by this TU. In this case the first top | |
11079 | level sibling is there to provide context only. */ | |
3019eac3 | 11080 | |
f4dc4d17 DE |
11081 | static void |
11082 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11083 | { | |
11084 | struct die_info *child_die; | |
3019eac3 | 11085 | |
f4dc4d17 DE |
11086 | prepare_one_comp_unit (cu, die, language_minimal); |
11087 | ||
11088 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11089 | We do this before processing child DIEs, so that the line header table | |
11090 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11091 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11092 | |
11093 | if (die->child != NULL) | |
11094 | { | |
11095 | child_die = die->child; | |
11096 | while (child_die && child_die->tag) | |
11097 | { | |
11098 | process_die (child_die, cu); | |
436c571c | 11099 | child_die = child_die->sibling; |
f4dc4d17 DE |
11100 | } |
11101 | } | |
3019eac3 DE |
11102 | } |
11103 | \f | |
80626a55 DE |
11104 | /* DWO/DWP files. |
11105 | ||
11106 | http://gcc.gnu.org/wiki/DebugFission | |
11107 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11108 | ||
11109 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11110 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11111 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11112 | |
11113 | static hashval_t | |
11114 | hash_dwo_file (const void *item) | |
11115 | { | |
9a3c8263 | 11116 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11117 | hashval_t hash; |
3019eac3 | 11118 | |
a2ce51a0 DE |
11119 | hash = htab_hash_string (dwo_file->dwo_name); |
11120 | if (dwo_file->comp_dir != NULL) | |
11121 | hash += htab_hash_string (dwo_file->comp_dir); | |
11122 | return hash; | |
3019eac3 DE |
11123 | } |
11124 | ||
11125 | static int | |
11126 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11127 | { | |
9a3c8263 SM |
11128 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11129 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11130 | |
a2ce51a0 DE |
11131 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11132 | return 0; | |
11133 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11134 | return lhs->comp_dir == rhs->comp_dir; | |
11135 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11136 | } |
11137 | ||
11138 | /* Allocate a hash table for DWO files. */ | |
11139 | ||
51ac9db5 | 11140 | static htab_up |
298e9637 | 11141 | allocate_dwo_file_hash_table () |
3019eac3 | 11142 | { |
51ac9db5 SM |
11143 | auto delete_dwo_file = [] (void *item) |
11144 | { | |
11145 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11146 | ||
11147 | delete dwo_file; | |
11148 | }; | |
11149 | ||
bc68fb19 TT |
11150 | return htab_up (htab_create_alloc (41, |
11151 | hash_dwo_file, | |
11152 | eq_dwo_file, | |
11153 | delete_dwo_file, | |
11154 | xcalloc, xfree)); | |
3019eac3 DE |
11155 | } |
11156 | ||
80626a55 DE |
11157 | /* Lookup DWO file DWO_NAME. */ |
11158 | ||
11159 | static void ** | |
976ca316 | 11160 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11161 | const char *dwo_name, |
11162 | const char *comp_dir) | |
80626a55 DE |
11163 | { |
11164 | struct dwo_file find_entry; | |
11165 | void **slot; | |
11166 | ||
976ca316 SM |
11167 | if (per_objfile->per_bfd->dwo_files == NULL) |
11168 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11169 | |
0ac5b59e DE |
11170 | find_entry.dwo_name = dwo_name; |
11171 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11172 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11173 | INSERT); |
80626a55 DE |
11174 | |
11175 | return slot; | |
11176 | } | |
11177 | ||
3019eac3 DE |
11178 | static hashval_t |
11179 | hash_dwo_unit (const void *item) | |
11180 | { | |
9a3c8263 | 11181 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11182 | |
11183 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11184 | return dwo_unit->signature; | |
11185 | } | |
11186 | ||
11187 | static int | |
11188 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11189 | { | |
9a3c8263 SM |
11190 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11191 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11192 | |
11193 | /* The signature is assumed to be unique within the DWO file. | |
11194 | So while object file CU dwo_id's always have the value zero, | |
11195 | that's OK, assuming each object file DWO file has only one CU, | |
11196 | and that's the rule for now. */ | |
11197 | return lhs->signature == rhs->signature; | |
11198 | } | |
11199 | ||
11200 | /* Allocate a hash table for DWO CUs,TUs. | |
11201 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11202 | ||
b0b6a987 | 11203 | static htab_up |
298e9637 | 11204 | allocate_dwo_unit_table () |
3019eac3 DE |
11205 | { |
11206 | /* Start out with a pretty small number. | |
11207 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11208 | return htab_up (htab_create_alloc (3, |
11209 | hash_dwo_unit, | |
11210 | eq_dwo_unit, | |
11211 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11212 | } |
11213 | ||
19c3d4c9 | 11214 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11215 | |
11216 | static void | |
19c3d4c9 DE |
11217 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11218 | const gdb_byte *info_ptr, | |
11219 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11220 | struct dwo_file *dwo_file, |
11221 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11222 | { |
11223 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11224 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11225 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11226 | |
a084a2a6 AT |
11227 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11228 | if (!signature.has_value ()) | |
3019eac3 | 11229 | { |
b98664d3 | 11230 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11231 | " its dwo_id [in module %s]"), |
9d8780f0 | 11232 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11233 | return; |
11234 | } | |
11235 | ||
3019eac3 | 11236 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11237 | dwo_unit->signature = *signature; |
8a0459fd | 11238 | dwo_unit->section = section; |
9c541725 | 11239 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11240 | dwo_unit->length = cu->per_cu->length; |
11241 | ||
6f738b01 SM |
11242 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11243 | sect_offset_str (sect_off), | |
11244 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11245 | } |
11246 | ||
33c5cd75 | 11247 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11248 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11249 | |
33c5cd75 | 11250 | static void |
976ca316 | 11251 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11252 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11253 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11254 | { |
976ca316 SM |
11255 | struct objfile *objfile = per_objfile->objfile; |
11256 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11257 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11258 | |
96b79293 | 11259 | section.read (objfile); |
33c5cd75 | 11260 | info_ptr = section.buffer; |
3019eac3 DE |
11261 | |
11262 | if (info_ptr == NULL) | |
33c5cd75 | 11263 | return; |
3019eac3 | 11264 | |
6f738b01 SM |
11265 | dwarf_read_debug_printf ("Reading %s for %s:", |
11266 | section.get_name (), | |
11267 | section.get_file_name ()); | |
3019eac3 | 11268 | |
33c5cd75 | 11269 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11270 | while (info_ptr < end_ptr) |
11271 | { | |
11272 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11273 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11274 | struct dwo_unit *dwo_unit; |
11275 | void **slot; | |
11276 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11277 | |
11278 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11279 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11280 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11281 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11282 | per_cu.section = §ion; | |
11283 | ||
976ca316 | 11284 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11285 | if (!reader.dummy_p) |
11286 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11287 | &dwo_file, &read_unit); |
33c5cd75 DB |
11288 | info_ptr += per_cu.length; |
11289 | ||
11290 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11291 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11292 | continue; |
3019eac3 | 11293 | |
33c5cd75 | 11294 | if (cus_htab == NULL) |
298e9637 | 11295 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11296 | |
1859c670 | 11297 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11298 | struct dwo_unit); |
c0ab21c2 | 11299 | *dwo_unit = read_unit; |
b0b6a987 | 11300 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11301 | gdb_assert (slot != NULL); |
11302 | if (*slot != NULL) | |
19c3d4c9 | 11303 | { |
33c5cd75 DB |
11304 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11305 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11306 | |
b98664d3 | 11307 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11308 | " the entry at offset %s, signature %s"), |
11309 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11310 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11311 | } |
33c5cd75 | 11312 | *slot = (void *)dwo_unit; |
3019eac3 | 11313 | } |
3019eac3 DE |
11314 | } |
11315 | ||
80626a55 DE |
11316 | /* DWP file .debug_{cu,tu}_index section format: |
11317 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11318 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11319 | ||
11320 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11321 | officially standard DWP format was published with DWARF v5 and is called | |
11322 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11323 | |
d2415c6c DE |
11324 | DWP Version 1: |
11325 | ||
80626a55 DE |
11326 | Both index sections have the same format, and serve to map a 64-bit |
11327 | signature to a set of section numbers. Each section begins with a header, | |
11328 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11329 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11330 | aligned at 8-byte boundaries in the file. | |
11331 | ||
d2415c6c DE |
11332 | The index section header consists of: |
11333 | ||
11334 | V, 32 bit version number | |
11335 | -, 32 bits unused | |
11336 | N, 32 bit number of compilation units or type units in the index | |
11337 | M, 32 bit number of slots in the hash table | |
80626a55 | 11338 | |
d2415c6c | 11339 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11340 | |
d2415c6c DE |
11341 | The hash table begins at offset 16 in the section, and consists of an array |
11342 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11343 | order of the application binary). Unused slots in the hash table are 0. | |
11344 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11345 | |
d2415c6c DE |
11346 | The parallel table begins immediately after the hash table |
11347 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11348 | array of 32-bit indexes (using the byte order of the application binary), | |
11349 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11350 | table contains a 32-bit index into the pool of section numbers. For unused | |
11351 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11352 | |
73869dc2 DE |
11353 | The pool of section numbers begins immediately following the hash table |
11354 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11355 | section numbers consists of an array of 32-bit words (using the byte order | |
11356 | of the application binary). Each item in the array is indexed starting | |
11357 | from 0. The hash table entry provides the index of the first section | |
11358 | number in the set. Additional section numbers in the set follow, and the | |
11359 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11360 | ||
11361 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11362 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11363 | be the second entry. Other members of the set may follow in any order. | |
11364 | ||
11365 | --- | |
11366 | ||
d2854d8d | 11367 | DWP Versions 2 and 5: |
73869dc2 | 11368 | |
d2854d8d | 11369 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11370 | and the entries in the index tables are now offsets into these sections. |
11371 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11372 | section. | |
11373 | ||
11374 | Index Section Contents: | |
11375 | Header | |
11376 | Hash Table of Signatures dwp_hash_table.hash_table | |
11377 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11378 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11379 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11380 | |
11381 | The index section header consists of: | |
11382 | ||
11383 | V, 32 bit version number | |
11384 | L, 32 bit number of columns in the table of section offsets | |
11385 | N, 32 bit number of compilation units or type units in the index | |
11386 | M, 32 bit number of slots in the hash table | |
11387 | ||
11388 | Numbers are recorded using the byte order of the application binary. | |
11389 | ||
11390 | The hash table has the same format as version 1. | |
11391 | The parallel table of indices has the same format as version 1, | |
11392 | except that the entries are origin-1 indices into the table of sections | |
11393 | offsets and the table of section sizes. | |
11394 | ||
11395 | The table of offsets begins immediately following the parallel table | |
11396 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11397 | a two-dimensional array of 32-bit words (using the byte order of the | |
11398 | application binary), with L columns and N+1 rows, in row-major order. | |
11399 | Each row in the array is indexed starting from 0. The first row provides | |
11400 | a key to the remaining rows: each column in this row provides an identifier | |
11401 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11402 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11403 | |
11404 | DW_SECT_INFO 1 .debug_info.dwo | |
11405 | DW_SECT_TYPES 2 .debug_types.dwo | |
11406 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11407 | DW_SECT_LINE 4 .debug_line.dwo | |
11408 | DW_SECT_LOC 5 .debug_loc.dwo | |
11409 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11410 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11411 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11412 | ||
d2854d8d CT |
11413 | The section identifiers for Version 5 are: |
11414 | ||
11415 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11416 | DW_SECT_RESERVED_V5 2 -- | |
11417 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11418 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11419 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11420 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11421 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11422 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11423 | ||
73869dc2 DE |
11424 | The offsets provided by the CU and TU index sections are the base offsets |
11425 | for the contributions made by each CU or TU to the corresponding section | |
11426 | in the package file. Each CU and TU header contains an abbrev_offset | |
11427 | field, used to find the abbreviations table for that CU or TU within the | |
11428 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11429 | be interpreted as relative to the base offset given in the index section. | |
11430 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11431 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11432 | and offsets into other debug sections obtained from DWARF attributes should | |
11433 | also be interpreted as relative to the corresponding base offset. | |
11434 | ||
11435 | The table of sizes begins immediately following the table of offsets. | |
11436 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11437 | with L columns and N rows, in row-major order. Each row in the array is | |
11438 | indexed starting from 1 (row 0 is shared by the two tables). | |
11439 | ||
11440 | --- | |
11441 | ||
11442 | Hash table lookup is handled the same in version 1 and 2: | |
11443 | ||
11444 | We assume that N and M will not exceed 2^32 - 1. | |
11445 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11446 | ||
d2415c6c DE |
11447 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11448 | in the hash table is located as follows: | |
80626a55 | 11449 | |
d2415c6c DE |
11450 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11451 | the low-order k bits all set to 1. | |
80626a55 | 11452 | |
d2415c6c | 11453 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11454 | |
d2415c6c DE |
11455 | 3) If the hash table entry at index H matches the signature, use that |
11456 | entry. If the hash table entry at index H is unused (all zeroes), | |
11457 | terminate the search: the signature is not present in the table. | |
80626a55 | 11458 | |
d2415c6c | 11459 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11460 | |
d2415c6c | 11461 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11462 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11463 | |
11464 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11465 | .debug_{info,types}.dwo in DWP_FILE. | |
11466 | Returns NULL if there isn't one. | |
11467 | Note: This function processes DWP files only, not DWO files. */ | |
11468 | ||
11469 | static struct dwp_hash_table * | |
976ca316 | 11470 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11471 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11472 | { |
976ca316 | 11473 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11474 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11475 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11476 | struct dwarf2_section_info *index; |
73869dc2 | 11477 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11478 | struct dwp_hash_table *htab; |
11479 | ||
11480 | if (is_debug_types) | |
11481 | index = &dwp_file->sections.tu_index; | |
11482 | else | |
11483 | index = &dwp_file->sections.cu_index; | |
11484 | ||
96b79293 | 11485 | if (index->empty ()) |
80626a55 | 11486 | return NULL; |
96b79293 | 11487 | index->read (objfile); |
80626a55 DE |
11488 | |
11489 | index_ptr = index->buffer; | |
11490 | index_end = index_ptr + index->size; | |
11491 | ||
d2854d8d CT |
11492 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11493 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11494 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11495 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11496 | index_ptr += 4; |
d2854d8d | 11497 | if (version == 2 || version == 5) |
73869dc2 DE |
11498 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11499 | else | |
11500 | nr_columns = 0; | |
11501 | index_ptr += 4; | |
80626a55 DE |
11502 | nr_units = read_4_bytes (dbfd, index_ptr); |
11503 | index_ptr += 4; | |
11504 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11505 | index_ptr += 4; | |
11506 | ||
d2854d8d | 11507 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11508 | { |
21aa081e | 11509 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11510 | " [in module %s]"), |
21aa081e | 11511 | pulongest (version), dwp_file->name); |
80626a55 DE |
11512 | } |
11513 | if (nr_slots != (nr_slots & -nr_slots)) | |
11514 | { | |
21aa081e | 11515 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11516 | " is not power of 2 [in module %s]"), |
21aa081e | 11517 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11518 | } |
11519 | ||
976ca316 | 11520 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11521 | htab->version = version; |
11522 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11523 | htab->nr_units = nr_units; |
11524 | htab->nr_slots = nr_slots; | |
11525 | htab->hash_table = index_ptr; | |
11526 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11527 | |
11528 | /* Exit early if the table is empty. */ | |
11529 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11530 | || (version == 2 && nr_columns == 0) |
11531 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11532 | { |
11533 | /* All must be zero. */ | |
11534 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11535 | || (version == 2 && nr_columns != 0) |
11536 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11537 | { |
b98664d3 | 11538 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11539 | " all zero [in modules %s]"), |
11540 | dwp_file->name); | |
11541 | } | |
11542 | return htab; | |
11543 | } | |
11544 | ||
11545 | if (version == 1) | |
11546 | { | |
11547 | htab->section_pool.v1.indices = | |
11548 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11549 | /* It's harder to decide whether the section is too small in v1. | |
11550 | V1 is deprecated anyway so we punt. */ | |
11551 | } | |
d2854d8d | 11552 | else if (version == 2) |
73869dc2 DE |
11553 | { |
11554 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11555 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11556 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11557 | /* Reverse map for error checking. */ |
11558 | int ids_seen[DW_SECT_MAX + 1]; | |
11559 | int i; | |
11560 | ||
11561 | if (nr_columns < 2) | |
11562 | { | |
11563 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11564 | " in section table [in module %s]"), | |
11565 | dwp_file->name); | |
11566 | } | |
11567 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11568 | { | |
11569 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11570 | " in section table [in module %s]"), | |
11571 | dwp_file->name); | |
11572 | } | |
04fd5eed GB |
11573 | memset (ids, 255, sizeof_ids); |
11574 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11575 | for (i = 0; i < nr_columns; ++i) |
11576 | { | |
11577 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11578 | ||
11579 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11580 | { | |
11581 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11582 | " in section table [in module %s]"), | |
11583 | id, dwp_file->name); | |
11584 | } | |
11585 | if (ids_seen[id] != -1) | |
11586 | { | |
11587 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11588 | " id %d in section table [in module %s]"), | |
11589 | id, dwp_file->name); | |
11590 | } | |
11591 | ids_seen[id] = i; | |
11592 | ids[i] = id; | |
11593 | } | |
11594 | /* Must have exactly one info or types section. */ | |
11595 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11596 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11597 | != 1) | |
11598 | { | |
11599 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11600 | " DWO info/types section [in module %s]"), | |
11601 | dwp_file->name); | |
11602 | } | |
11603 | /* Must have an abbrev section. */ | |
11604 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11605 | { | |
11606 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11607 | " section [in module %s]"), | |
11608 | dwp_file->name); | |
11609 | } | |
11610 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11611 | htab->section_pool.v2.sizes = | |
11612 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11613 | * nr_units * nr_columns); | |
11614 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11615 | * nr_units * nr_columns)) | |
11616 | > index_end) | |
11617 | { | |
11618 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11619 | " [in module %s]"), | |
11620 | dwp_file->name); | |
11621 | } | |
11622 | } | |
d2854d8d CT |
11623 | else /* version == 5 */ |
11624 | { | |
11625 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11626 | int *ids = htab->section_pool.v5.section_ids; | |
11627 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11628 | /* Reverse map for error checking. */ | |
11629 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11630 | ||
11631 | if (nr_columns < 2) | |
11632 | { | |
11633 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11634 | " in section table [in module %s]"), | |
11635 | dwp_file->name); | |
11636 | } | |
11637 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11638 | { | |
11639 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11640 | " in section table [in module %s]"), | |
11641 | dwp_file->name); | |
11642 | } | |
11643 | memset (ids, 255, sizeof_ids); | |
11644 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11645 | for (int i = 0; i < nr_columns; ++i) | |
11646 | { | |
11647 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11648 | ||
11649 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11650 | { | |
11651 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11652 | " in section table [in module %s]"), | |
11653 | id, dwp_file->name); | |
11654 | } | |
11655 | if (ids_seen[id] != -1) | |
11656 | { | |
11657 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11658 | " id %d in section table [in module %s]"), | |
11659 | id, dwp_file->name); | |
11660 | } | |
11661 | ids_seen[id] = i; | |
11662 | ids[i] = id; | |
11663 | } | |
11664 | /* Must have seen an info section. */ | |
11665 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11666 | { | |
11667 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11668 | " DWO info/types section [in module %s]"), | |
11669 | dwp_file->name); | |
11670 | } | |
11671 | /* Must have an abbrev section. */ | |
11672 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11673 | { | |
11674 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11675 | " section [in module %s]"), | |
11676 | dwp_file->name); | |
11677 | } | |
11678 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11679 | htab->section_pool.v5.sizes | |
11680 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11681 | * nr_units * nr_columns); | |
11682 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11683 | * nr_units * nr_columns)) | |
11684 | > index_end) | |
11685 | { | |
11686 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11687 | " [in module %s]"), | |
11688 | dwp_file->name); | |
11689 | } | |
11690 | } | |
80626a55 DE |
11691 | |
11692 | return htab; | |
11693 | } | |
11694 | ||
11695 | /* Update SECTIONS with the data from SECTP. | |
11696 | ||
5bb6e9dd TT |
11697 | This function is like the other "locate" section routines, but in |
11698 | this context the sections to read comes from the DWP V1 hash table, | |
11699 | not the full ELF section table. | |
80626a55 DE |
11700 | |
11701 | The result is non-zero for success, or zero if an error was found. */ | |
11702 | ||
11703 | static int | |
73869dc2 DE |
11704 | locate_v1_virtual_dwo_sections (asection *sectp, |
11705 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11706 | { |
11707 | const struct dwop_section_names *names = &dwop_section_names; | |
11708 | ||
fbedd546 | 11709 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 DE |
11710 | { |
11711 | /* There can be only one. */ | |
049412e3 | 11712 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11713 | return 0; |
049412e3 | 11714 | sections->abbrev.s.section = sectp; |
fd361982 | 11715 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 11716 | } |
fbedd546 TT |
11717 | else if (names->info_dwo.matches (sectp->name) |
11718 | || names->types_dwo.matches (sectp->name)) | |
80626a55 DE |
11719 | { |
11720 | /* There can be only one. */ | |
049412e3 | 11721 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11722 | return 0; |
049412e3 | 11723 | sections->info_or_types.s.section = sectp; |
fd361982 | 11724 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 | 11725 | } |
fbedd546 | 11726 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 DE |
11727 | { |
11728 | /* There can be only one. */ | |
049412e3 | 11729 | if (sections->line.s.section != NULL) |
80626a55 | 11730 | return 0; |
049412e3 | 11731 | sections->line.s.section = sectp; |
fd361982 | 11732 | sections->line.size = bfd_section_size (sectp); |
80626a55 | 11733 | } |
fbedd546 | 11734 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 DE |
11735 | { |
11736 | /* There can be only one. */ | |
049412e3 | 11737 | if (sections->loc.s.section != NULL) |
80626a55 | 11738 | return 0; |
049412e3 | 11739 | sections->loc.s.section = sectp; |
fd361982 | 11740 | sections->loc.size = bfd_section_size (sectp); |
80626a55 | 11741 | } |
fbedd546 | 11742 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 DE |
11743 | { |
11744 | /* There can be only one. */ | |
049412e3 | 11745 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11746 | return 0; |
049412e3 | 11747 | sections->macinfo.s.section = sectp; |
fd361982 | 11748 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 11749 | } |
fbedd546 | 11750 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 DE |
11751 | { |
11752 | /* There can be only one. */ | |
049412e3 | 11753 | if (sections->macro.s.section != NULL) |
80626a55 | 11754 | return 0; |
049412e3 | 11755 | sections->macro.s.section = sectp; |
fd361982 | 11756 | sections->macro.size = bfd_section_size (sectp); |
80626a55 | 11757 | } |
fbedd546 | 11758 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 DE |
11759 | { |
11760 | /* There can be only one. */ | |
049412e3 | 11761 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11762 | return 0; |
049412e3 | 11763 | sections->str_offsets.s.section = sectp; |
fd361982 | 11764 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11765 | } |
11766 | else | |
11767 | { | |
11768 | /* No other kind of section is valid. */ | |
11769 | return 0; | |
11770 | } | |
11771 | ||
11772 | return 1; | |
11773 | } | |
11774 | ||
73869dc2 DE |
11775 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11776 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11777 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11778 | This is for DWP version 1 files. */ | |
80626a55 DE |
11779 | |
11780 | static struct dwo_unit * | |
976ca316 | 11781 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11782 | struct dwp_file *dwp_file, |
73869dc2 DE |
11783 | uint32_t unit_index, |
11784 | const char *comp_dir, | |
11785 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11786 | { |
73869dc2 DE |
11787 | const struct dwp_hash_table *dwp_htab = |
11788 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11789 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11790 | const char *kind = is_debug_types ? "TU" : "CU"; |
11791 | struct dwo_file *dwo_file; | |
11792 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11793 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11794 | void **dwo_file_slot; |
80626a55 DE |
11795 | int i; |
11796 | ||
73869dc2 DE |
11797 | gdb_assert (dwp_file->version == 1); |
11798 | ||
6f738b01 SM |
11799 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
11800 | kind, pulongest (unit_index), hex_string (signature), | |
11801 | dwp_file->name); | |
80626a55 | 11802 | |
19ac8c2e | 11803 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11804 | Put a limit on the number of sections we look for so that bad data |
11805 | doesn't cause us to loop forever. */ | |
11806 | ||
73869dc2 | 11807 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11808 | (1 /* .debug_info or .debug_types */ \ |
11809 | + 1 /* .debug_abbrev */ \ | |
11810 | + 1 /* .debug_line */ \ | |
11811 | + 1 /* .debug_loc */ \ | |
11812 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11813 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11814 | + 1 /* trailing zero */) |
11815 | ||
11816 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11817 | |
73869dc2 | 11818 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11819 | { |
11820 | asection *sectp; | |
11821 | uint32_t section_nr = | |
11822 | read_4_bytes (dbfd, | |
73869dc2 DE |
11823 | dwp_htab->section_pool.v1.indices |
11824 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11825 | |
11826 | if (section_nr == 0) | |
11827 | break; | |
11828 | if (section_nr >= dwp_file->num_sections) | |
11829 | { | |
11830 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11831 | " [in module %s]"), | |
11832 | dwp_file->name); | |
11833 | } | |
11834 | ||
11835 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11836 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11837 | { |
11838 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11839 | " [in module %s]"), | |
11840 | dwp_file->name); | |
11841 | } | |
11842 | } | |
11843 | ||
11844 | if (i < 2 | |
96b79293 TT |
11845 | || sections.info_or_types.empty () |
11846 | || sections.abbrev.empty ()) | |
80626a55 DE |
11847 | { |
11848 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11849 | " [in module %s]"), | |
11850 | dwp_file->name); | |
11851 | } | |
73869dc2 | 11852 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11853 | { |
11854 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11855 | " [in module %s]"), | |
11856 | dwp_file->name); | |
11857 | } | |
11858 | ||
11859 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11860 | have dwo_unit "live" in that. At least for now. | |
11861 | ||
11862 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11863 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11864 | file, we can combine them back into a virtual DWO file to save space |
11865 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11866 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11867 | ||
791afaa2 TT |
11868 | std::string virtual_dwo_name = |
11869 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11870 | sections.abbrev.get_id (), |
11871 | sections.line.get_id (), | |
11872 | sections.loc.get_id (), | |
11873 | sections.str_offsets.get_id ()); | |
80626a55 | 11874 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11875 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11876 | comp_dir); |
80626a55 DE |
11877 | /* Create one if necessary. */ |
11878 | if (*dwo_file_slot == NULL) | |
11879 | { | |
6f738b01 SM |
11880 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
11881 | virtual_dwo_name.c_str ()); | |
11882 | ||
51ac9db5 | 11883 | dwo_file = new struct dwo_file; |
976ca316 | 11884 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11885 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11886 | dwo_file->sections.abbrev = sections.abbrev; |
11887 | dwo_file->sections.line = sections.line; | |
11888 | dwo_file->sections.loc = sections.loc; | |
11889 | dwo_file->sections.macinfo = sections.macinfo; | |
11890 | dwo_file->sections.macro = sections.macro; | |
11891 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11892 | /* The "str" section is global to the entire DWP file. */ | |
11893 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11894 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11895 | there's no need to record it in dwo_file. |
11896 | Also, we can't simply record type sections in dwo_file because | |
11897 | we record a pointer into the vector in dwo_unit. As we collect more | |
11898 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11899 | for it, invalidating all copies of pointers into the previous |
11900 | contents. */ | |
80626a55 DE |
11901 | *dwo_file_slot = dwo_file; |
11902 | } | |
11903 | else | |
11904 | { | |
6f738b01 SM |
11905 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
11906 | virtual_dwo_name.c_str ()); | |
11907 | ||
9a3c8263 | 11908 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11909 | } |
80626a55 | 11910 | |
976ca316 | 11911 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11912 | dwo_unit->dwo_file = dwo_file; |
11913 | dwo_unit->signature = signature; | |
8d749320 | 11914 | dwo_unit->section = |
976ca316 | 11915 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11916 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11917 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11918 | |
11919 | return dwo_unit; | |
11920 | } | |
11921 | ||
d2854d8d CT |
11922 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
11923 | simplify them. Given a pointer to the containing section SECTION, and | |
11924 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
11925 | virtual section of just that piece. */ | |
73869dc2 DE |
11926 | |
11927 | static struct dwarf2_section_info | |
d2854d8d CT |
11928 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
11929 | struct dwarf2_section_info *section, | |
11930 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
11931 | { |
11932 | struct dwarf2_section_info result; | |
11933 | asection *sectp; | |
11934 | ||
11935 | gdb_assert (section != NULL); | |
11936 | gdb_assert (!section->is_virtual); | |
11937 | ||
11938 | memset (&result, 0, sizeof (result)); | |
11939 | result.s.containing_section = section; | |
dc4ccb6f | 11940 | result.is_virtual = true; |
73869dc2 DE |
11941 | |
11942 | if (size == 0) | |
11943 | return result; | |
11944 | ||
96b79293 | 11945 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11946 | |
11947 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11948 | bounds of the real section. This is a pretty-rare event, so just | |
11949 | flag an error (easier) instead of a warning and trying to cope. */ | |
11950 | if (sectp == NULL | |
fd361982 | 11951 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11952 | { |
d2854d8d | 11953 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 11954 | " in section %s [in module %s]"), |
fd361982 | 11955 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 11956 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
11957 | } |
11958 | ||
11959 | result.virtual_offset = offset; | |
11960 | result.size = size; | |
11961 | return result; | |
11962 | } | |
11963 | ||
11964 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11965 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11966 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11967 | This is for DWP version 2 files. */ | |
11968 | ||
11969 | static struct dwo_unit * | |
976ca316 | 11970 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11971 | struct dwp_file *dwp_file, |
73869dc2 DE |
11972 | uint32_t unit_index, |
11973 | const char *comp_dir, | |
11974 | ULONGEST signature, int is_debug_types) | |
11975 | { | |
73869dc2 DE |
11976 | const struct dwp_hash_table *dwp_htab = |
11977 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11978 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11979 | const char *kind = is_debug_types ? "TU" : "CU"; |
11980 | struct dwo_file *dwo_file; | |
11981 | struct dwo_unit *dwo_unit; | |
d2854d8d | 11982 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 11983 | void **dwo_file_slot; |
73869dc2 DE |
11984 | int i; |
11985 | ||
11986 | gdb_assert (dwp_file->version == 2); | |
11987 | ||
6f738b01 SM |
11988 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
11989 | kind, pulongest (unit_index), hex_string (signature), | |
11990 | dwp_file->name); | |
73869dc2 DE |
11991 | |
11992 | /* Fetch the section offsets of this DWO unit. */ | |
11993 | ||
11994 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11995 | |
11996 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11997 | { | |
11998 | uint32_t offset = read_4_bytes (dbfd, | |
11999 | dwp_htab->section_pool.v2.offsets | |
12000 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12001 | + i) | |
12002 | * sizeof (uint32_t))); | |
12003 | uint32_t size = read_4_bytes (dbfd, | |
12004 | dwp_htab->section_pool.v2.sizes | |
12005 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12006 | + i) | |
12007 | * sizeof (uint32_t))); | |
12008 | ||
12009 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12010 | { | |
12011 | case DW_SECT_INFO: | |
12012 | case DW_SECT_TYPES: | |
12013 | sections.info_or_types_offset = offset; | |
12014 | sections.info_or_types_size = size; | |
12015 | break; | |
12016 | case DW_SECT_ABBREV: | |
12017 | sections.abbrev_offset = offset; | |
12018 | sections.abbrev_size = size; | |
12019 | break; | |
12020 | case DW_SECT_LINE: | |
12021 | sections.line_offset = offset; | |
12022 | sections.line_size = size; | |
12023 | break; | |
12024 | case DW_SECT_LOC: | |
12025 | sections.loc_offset = offset; | |
12026 | sections.loc_size = size; | |
12027 | break; | |
12028 | case DW_SECT_STR_OFFSETS: | |
12029 | sections.str_offsets_offset = offset; | |
12030 | sections.str_offsets_size = size; | |
12031 | break; | |
12032 | case DW_SECT_MACINFO: | |
12033 | sections.macinfo_offset = offset; | |
12034 | sections.macinfo_size = size; | |
12035 | break; | |
12036 | case DW_SECT_MACRO: | |
12037 | sections.macro_offset = offset; | |
12038 | sections.macro_size = size; | |
12039 | break; | |
12040 | } | |
12041 | } | |
12042 | ||
12043 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12044 | have dwo_unit "live" in that. At least for now. | |
12045 | ||
12046 | The DWP file can be made up of a random collection of CUs and TUs. | |
12047 | However, for each CU + set of TUs that came from the same original DWO | |
12048 | file, we can combine them back into a virtual DWO file to save space | |
12049 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12050 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12051 | ||
791afaa2 TT |
12052 | std::string virtual_dwo_name = |
12053 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12054 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12055 | (long) (sections.line_size ? sections.line_offset : 0), | |
12056 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12057 | (long) (sections.str_offsets_size | |
12058 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12059 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12060 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12061 | comp_dir); |
73869dc2 DE |
12062 | /* Create one if necessary. */ |
12063 | if (*dwo_file_slot == NULL) | |
12064 | { | |
6f738b01 SM |
12065 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12066 | virtual_dwo_name.c_str ()); | |
12067 | ||
51ac9db5 | 12068 | dwo_file = new struct dwo_file; |
976ca316 | 12069 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12070 | dwo_file->comp_dir = comp_dir; |
12071 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12072 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12073 | sections.abbrev_offset, | |
12074 | sections.abbrev_size); | |
73869dc2 | 12075 | dwo_file->sections.line = |
d2854d8d CT |
12076 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12077 | sections.line_offset, | |
12078 | sections.line_size); | |
73869dc2 | 12079 | dwo_file->sections.loc = |
d2854d8d CT |
12080 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12081 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12082 | dwo_file->sections.macinfo = |
d2854d8d CT |
12083 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12084 | sections.macinfo_offset, | |
12085 | sections.macinfo_size); | |
73869dc2 | 12086 | dwo_file->sections.macro = |
d2854d8d CT |
12087 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12088 | sections.macro_offset, | |
12089 | sections.macro_size); | |
73869dc2 | 12090 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12091 | create_dwp_v2_or_v5_section (per_objfile, |
12092 | &dwp_file->sections.str_offsets, | |
12093 | sections.str_offsets_offset, | |
12094 | sections.str_offsets_size); | |
73869dc2 DE |
12095 | /* The "str" section is global to the entire DWP file. */ |
12096 | dwo_file->sections.str = dwp_file->sections.str; | |
12097 | /* The info or types section is assigned below to dwo_unit, | |
12098 | there's no need to record it in dwo_file. | |
12099 | Also, we can't simply record type sections in dwo_file because | |
12100 | we record a pointer into the vector in dwo_unit. As we collect more | |
12101 | types we'll grow the vector and eventually have to reallocate space | |
12102 | for it, invalidating all copies of pointers into the previous | |
12103 | contents. */ | |
12104 | *dwo_file_slot = dwo_file; | |
12105 | } | |
12106 | else | |
12107 | { | |
6f738b01 SM |
12108 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12109 | virtual_dwo_name.c_str ()); | |
12110 | ||
9a3c8263 | 12111 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12112 | } |
73869dc2 | 12113 | |
976ca316 | 12114 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12115 | dwo_unit->dwo_file = dwo_file; |
12116 | dwo_unit->signature = signature; | |
8d749320 | 12117 | dwo_unit->section = |
976ca316 | 12118 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12119 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12120 | (per_objfile, |
d2854d8d CT |
12121 | is_debug_types |
12122 | ? &dwp_file->sections.types | |
12123 | : &dwp_file->sections.info, | |
12124 | sections.info_or_types_offset, | |
12125 | sections.info_or_types_size); | |
12126 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12127 | ||
12128 | return dwo_unit; | |
12129 | } | |
12130 | ||
12131 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12132 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12133 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12134 | This is for DWP version 5 files. */ | |
12135 | ||
12136 | static struct dwo_unit * | |
12137 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12138 | struct dwp_file *dwp_file, | |
12139 | uint32_t unit_index, | |
12140 | const char *comp_dir, | |
12141 | ULONGEST signature, int is_debug_types) | |
12142 | { | |
12143 | const struct dwp_hash_table *dwp_htab | |
12144 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12145 | bfd *dbfd = dwp_file->dbfd.get (); | |
12146 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12147 | struct dwo_file *dwo_file; | |
12148 | struct dwo_unit *dwo_unit; | |
12149 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12150 | void **dwo_file_slot; | |
12151 | ||
12152 | gdb_assert (dwp_file->version == 5); | |
12153 | ||
6f738b01 SM |
12154 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12155 | kind, pulongest (unit_index), hex_string (signature), | |
12156 | dwp_file->name); | |
d2854d8d CT |
12157 | |
12158 | /* Fetch the section offsets of this DWO unit. */ | |
12159 | ||
12160 | /* memset (§ions, 0, sizeof (sections)); */ | |
12161 | ||
12162 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12163 | { | |
12164 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12165 | dwp_htab->section_pool.v5.offsets |
12166 | + (((unit_index - 1) | |
12167 | * dwp_htab->nr_columns | |
12168 | + i) | |
12169 | * sizeof (uint32_t))); | |
d2854d8d | 12170 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12171 | dwp_htab->section_pool.v5.sizes |
12172 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12173 | + i) | |
12174 | * sizeof (uint32_t))); | |
d2854d8d CT |
12175 | |
12176 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12177 | { |
12178 | case DW_SECT_ABBREV_V5: | |
12179 | sections.abbrev_offset = offset; | |
12180 | sections.abbrev_size = size; | |
12181 | break; | |
12182 | case DW_SECT_INFO_V5: | |
12183 | sections.info_or_types_offset = offset; | |
12184 | sections.info_or_types_size = size; | |
12185 | break; | |
12186 | case DW_SECT_LINE_V5: | |
12187 | sections.line_offset = offset; | |
12188 | sections.line_size = size; | |
12189 | break; | |
12190 | case DW_SECT_LOCLISTS_V5: | |
12191 | sections.loclists_offset = offset; | |
12192 | sections.loclists_size = size; | |
12193 | break; | |
12194 | case DW_SECT_MACRO_V5: | |
12195 | sections.macro_offset = offset; | |
12196 | sections.macro_size = size; | |
12197 | break; | |
12198 | case DW_SECT_RNGLISTS_V5: | |
12199 | sections.rnglists_offset = offset; | |
12200 | sections.rnglists_size = size; | |
12201 | break; | |
12202 | case DW_SECT_STR_OFFSETS_V5: | |
12203 | sections.str_offsets_offset = offset; | |
12204 | sections.str_offsets_size = size; | |
12205 | break; | |
12206 | case DW_SECT_RESERVED_V5: | |
12207 | default: | |
12208 | break; | |
12209 | } | |
d2854d8d CT |
12210 | } |
12211 | ||
12212 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12213 | have dwo_unit "live" in that. At least for now. | |
12214 | ||
12215 | The DWP file can be made up of a random collection of CUs and TUs. | |
12216 | However, for each CU + set of TUs that came from the same original DWO | |
12217 | file, we can combine them back into a virtual DWO file to save space | |
12218 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12219 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12220 | ||
12221 | std::string virtual_dwo_name = | |
12222 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12223 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12224 | (long) (sections.line_size ? sections.line_offset : 0), | |
12225 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12226 | (long) (sections.str_offsets_size | |
12227 | ? sections.str_offsets_offset : 0), | |
12228 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12229 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12230 | /* Can we use an existing virtual DWO file? */ |
12231 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12232 | virtual_dwo_name.c_str (), |
12233 | comp_dir); | |
d2854d8d CT |
12234 | /* Create one if necessary. */ |
12235 | if (*dwo_file_slot == NULL) | |
12236 | { | |
6f738b01 SM |
12237 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12238 | virtual_dwo_name.c_str ()); | |
12239 | ||
d2854d8d CT |
12240 | dwo_file = new struct dwo_file; |
12241 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12242 | dwo_file->comp_dir = comp_dir; | |
12243 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12244 | create_dwp_v2_or_v5_section (per_objfile, |
12245 | &dwp_file->sections.abbrev, | |
12246 | sections.abbrev_offset, | |
12247 | sections.abbrev_size); | |
d2854d8d | 12248 | dwo_file->sections.line = |
dda83cd7 SM |
12249 | create_dwp_v2_or_v5_section (per_objfile, |
12250 | &dwp_file->sections.line, | |
12251 | sections.line_offset, sections.line_size); | |
d2854d8d | 12252 | dwo_file->sections.macro = |
dda83cd7 SM |
12253 | create_dwp_v2_or_v5_section (per_objfile, |
12254 | &dwp_file->sections.macro, | |
12255 | sections.macro_offset, | |
12256 | sections.macro_size); | |
d2854d8d | 12257 | dwo_file->sections.loclists = |
dda83cd7 SM |
12258 | create_dwp_v2_or_v5_section (per_objfile, |
12259 | &dwp_file->sections.loclists, | |
12260 | sections.loclists_offset, | |
12261 | sections.loclists_size); | |
d2854d8d | 12262 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12263 | create_dwp_v2_or_v5_section (per_objfile, |
12264 | &dwp_file->sections.rnglists, | |
12265 | sections.rnglists_offset, | |
12266 | sections.rnglists_size); | |
d2854d8d | 12267 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12268 | create_dwp_v2_or_v5_section (per_objfile, |
12269 | &dwp_file->sections.str_offsets, | |
12270 | sections.str_offsets_offset, | |
12271 | sections.str_offsets_size); | |
d2854d8d CT |
12272 | /* The "str" section is global to the entire DWP file. */ |
12273 | dwo_file->sections.str = dwp_file->sections.str; | |
12274 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12275 | there's no need to record it in dwo_file. |
12276 | Also, we can't simply record type sections in dwo_file because | |
12277 | we record a pointer into the vector in dwo_unit. As we collect more | |
12278 | types we'll grow the vector and eventually have to reallocate space | |
12279 | for it, invalidating all copies of pointers into the previous | |
12280 | contents. */ | |
d2854d8d CT |
12281 | *dwo_file_slot = dwo_file; |
12282 | } | |
12283 | else | |
12284 | { | |
6f738b01 SM |
12285 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12286 | virtual_dwo_name.c_str ()); | |
12287 | ||
d2854d8d CT |
12288 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12289 | } | |
12290 | ||
12291 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12292 | dwo_unit->dwo_file = dwo_file; | |
12293 | dwo_unit->signature = signature; | |
12294 | dwo_unit->section | |
12295 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12296 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12297 | &dwp_file->sections.info, |
12298 | sections.info_or_types_offset, | |
12299 | sections.info_or_types_size); | |
73869dc2 DE |
12300 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12301 | ||
12302 | return dwo_unit; | |
12303 | } | |
12304 | ||
57d63ce2 DE |
12305 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12306 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12307 | |
12308 | static struct dwo_unit * | |
976ca316 | 12309 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12310 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12311 | ULONGEST signature, int is_debug_types) |
80626a55 | 12312 | { |
57d63ce2 DE |
12313 | const struct dwp_hash_table *dwp_htab = |
12314 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12315 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12316 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12317 | uint32_t hash = signature & mask; |
12318 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12319 | unsigned int i; | |
12320 | void **slot; | |
870f88f7 | 12321 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12322 | |
12323 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12324 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12325 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12326 | ? dwp_file->loaded_tus.get () |
12327 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12328 | &find_dwo_cu, INSERT); |
80626a55 DE |
12329 | |
12330 | if (*slot != NULL) | |
9a3c8263 | 12331 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12332 | |
12333 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12334 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12335 | { |
12336 | ULONGEST signature_in_table; | |
12337 | ||
12338 | signature_in_table = | |
57d63ce2 | 12339 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12340 | if (signature_in_table == signature) |
12341 | { | |
57d63ce2 DE |
12342 | uint32_t unit_index = |
12343 | read_4_bytes (dbfd, | |
12344 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12345 | |
73869dc2 DE |
12346 | if (dwp_file->version == 1) |
12347 | { | |
976ca316 SM |
12348 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12349 | unit_index, comp_dir, | |
12350 | signature, is_debug_types); | |
73869dc2 | 12351 | } |
d2854d8d | 12352 | else if (dwp_file->version == 2) |
73869dc2 | 12353 | { |
976ca316 SM |
12354 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12355 | unit_index, comp_dir, | |
12356 | signature, is_debug_types); | |
73869dc2 | 12357 | } |
d2854d8d CT |
12358 | else /* version == 5 */ |
12359 | { | |
12360 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12361 | unit_index, comp_dir, | |
12362 | signature, is_debug_types); | |
12363 | } | |
9a3c8263 | 12364 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12365 | } |
12366 | if (signature_in_table == 0) | |
12367 | return NULL; | |
12368 | hash = (hash + hash2) & mask; | |
12369 | } | |
12370 | ||
12371 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12372 | " [in module %s]"), | |
12373 | dwp_file->name); | |
12374 | } | |
12375 | ||
ab5088bf | 12376 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12377 | Open the file specified by FILE_NAME and hand it off to BFD for |
12378 | preliminary analysis. Return a newly initialized bfd *, which | |
12379 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12380 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12381 | SEARCH_CWD is true if the current directory is to be searched. |
12382 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12383 | If successful, the file is added to the bfd include table of the |
12384 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12385 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12386 | NOTE: This function is derived from symfile_bfd_open. */ |
12387 | ||
192b62ce | 12388 | static gdb_bfd_ref_ptr |
976ca316 | 12389 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12390 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12391 | { |
24b9144d | 12392 | int desc; |
9c02c129 DE |
12393 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12394 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12395 | to debug_file_directory. */ | |
e0cc99a6 | 12396 | const char *search_path; |
9c02c129 DE |
12397 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12398 | ||
e0cc99a6 | 12399 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12400 | if (search_cwd) |
12401 | { | |
12402 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12403 | { |
12404 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12405 | debug_file_directory, | |
12406 | (char *) NULL)); | |
12407 | search_path = search_path_holder.get (); | |
12408 | } | |
6ac97d4c | 12409 | else |
e0cc99a6 | 12410 | search_path = "."; |
6ac97d4c | 12411 | } |
9c02c129 | 12412 | else |
e0cc99a6 | 12413 | search_path = debug_file_directory; |
3019eac3 | 12414 | |
56d467f4 CT |
12415 | /* Add the path for the executable binary to the list of search paths. */ |
12416 | std::string objfile_dir = ldirname (objfile_name (per_objfile->objfile)); | |
12417 | search_path_holder.reset (concat (objfile_dir.c_str (), | |
12418 | dirname_separator_string, | |
12419 | search_path, nullptr)); | |
12420 | search_path = search_path_holder.get (); | |
12421 | ||
24b9144d | 12422 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12423 | if (is_dwp) |
12424 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12425 | |
12426 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12427 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12428 | O_RDONLY | O_BINARY, &absolute_name); |
12429 | if (desc < 0) | |
12430 | return NULL; | |
12431 | ||
e0cc99a6 TT |
12432 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12433 | gnutarget, desc)); | |
9c02c129 DE |
12434 | if (sym_bfd == NULL) |
12435 | return NULL; | |
192b62ce | 12436 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12437 | |
192b62ce TT |
12438 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12439 | return NULL; | |
3019eac3 | 12440 | |
13aaf454 DE |
12441 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12442 | This is important because things like demangled_names_hash lives in the | |
12443 | objfile's per_bfd space and may have references to things like symbol | |
12444 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12445 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12446 | |
3019eac3 DE |
12447 | return sym_bfd; |
12448 | } | |
12449 | ||
ab5088bf | 12450 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12451 | COMP_DIR is the DW_AT_comp_dir attribute. |
12452 | The result is the bfd handle of the file. | |
12453 | If there is a problem finding or opening the file, return NULL. | |
12454 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12455 | same as symfile_bfd_open. */ | |
12456 | ||
192b62ce | 12457 | static gdb_bfd_ref_ptr |
976ca316 | 12458 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12459 | const char *file_name, const char *comp_dir) |
3019eac3 | 12460 | { |
80626a55 | 12461 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12462 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12463 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12464 | |
12465 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12466 | ||
12467 | if (comp_dir != NULL) | |
12468 | { | |
43816ebc TT |
12469 | gdb::unique_xmalloc_ptr<char> path_to_try |
12470 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12471 | |
12472 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12473 | search path, which seems useful. */ | |
976ca316 | 12474 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12475 | 0 /*is_dwp*/, |
192b62ce | 12476 | 1 /*search_cwd*/)); |
3019eac3 DE |
12477 | if (abfd != NULL) |
12478 | return abfd; | |
12479 | } | |
12480 | ||
12481 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12482 | is a list of paths. */ | |
12483 | ||
12484 | if (*debug_file_directory == '\0') | |
12485 | return NULL; | |
12486 | ||
976ca316 | 12487 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12488 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12489 | } |
12490 | ||
80626a55 DE |
12491 | /* This function is mapped across the sections and remembers the offset and |
12492 | size of each of the DWO debugging sections we are interested in. */ | |
12493 | ||
12494 | static void | |
5bb6e9dd TT |
12495 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12496 | dwo_sections *dwo_sections) | |
80626a55 | 12497 | { |
80626a55 DE |
12498 | const struct dwop_section_names *names = &dwop_section_names; |
12499 | ||
fbedd546 | 12500 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 | 12501 | { |
049412e3 | 12502 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12503 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12504 | } |
fbedd546 | 12505 | else if (names->info_dwo.matches (sectp->name)) |
80626a55 | 12506 | { |
049412e3 | 12507 | dwo_sections->info.s.section = sectp; |
fd361982 | 12508 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 | 12509 | } |
fbedd546 | 12510 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 | 12511 | { |
049412e3 | 12512 | dwo_sections->line.s.section = sectp; |
fd361982 | 12513 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 | 12514 | } |
fbedd546 | 12515 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 | 12516 | { |
049412e3 | 12517 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12518 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12519 | } |
fbedd546 | 12520 | else if (names->loclists_dwo.matches (sectp->name)) |
41144253 | 12521 | { |
12522 | dwo_sections->loclists.s.section = sectp; | |
12523 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12524 | } | |
fbedd546 | 12525 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 | 12526 | { |
049412e3 | 12527 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12528 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12529 | } |
fbedd546 | 12530 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 | 12531 | { |
049412e3 | 12532 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12533 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12534 | } |
fbedd546 | 12535 | else if (names->rnglists_dwo.matches (sectp->name)) |
d0ce17d8 CT |
12536 | { |
12537 | dwo_sections->rnglists.s.section = sectp; | |
12538 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12539 | } | |
fbedd546 | 12540 | else if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12541 | { |
049412e3 | 12542 | dwo_sections->str.s.section = sectp; |
fd361982 | 12543 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 | 12544 | } |
fbedd546 | 12545 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 | 12546 | { |
049412e3 | 12547 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12548 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 | 12549 | } |
fbedd546 | 12550 | else if (names->types_dwo.matches (sectp->name)) |
80626a55 DE |
12551 | { |
12552 | struct dwarf2_section_info type_section; | |
12553 | ||
12554 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12555 | type_section.s.section = sectp; |
fd361982 | 12556 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12557 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12558 | } |
12559 | } | |
12560 | ||
ab5088bf | 12561 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12562 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12563 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12564 | |
12565 | static struct dwo_file * | |
4ab09049 SM |
12566 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12567 | const char *comp_dir) | |
3019eac3 | 12568 | { |
976ca316 | 12569 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12570 | |
976ca316 | 12571 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12572 | if (dbfd == NULL) |
12573 | { | |
6f738b01 SM |
12574 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12575 | ||
80626a55 DE |
12576 | return NULL; |
12577 | } | |
263db9a1 | 12578 | |
51ac9db5 | 12579 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12580 | dwo_file->dwo_name = dwo_name; |
12581 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12582 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12583 | |
5bb6e9dd TT |
12584 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12585 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12586 | &dwo_file->sections); | |
3019eac3 | 12587 | |
976ca316 SM |
12588 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12589 | dwo_file->cus); | |
3019eac3 | 12590 | |
d2854d8d CT |
12591 | if (cu->per_cu->dwarf_version < 5) |
12592 | { | |
12593 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12594 | dwo_file->sections.types, dwo_file->tus); | |
12595 | } | |
12596 | else | |
12597 | { | |
12598 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12599 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12600 | rcuh_kind::COMPILE); |
d2854d8d | 12601 | } |
3019eac3 | 12602 | |
6f738b01 | 12603 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12604 | |
263db9a1 | 12605 | return dwo_file.release (); |
3019eac3 DE |
12606 | } |
12607 | ||
80626a55 | 12608 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12609 | size of each of the DWP debugging sections common to version 1 and 2 that |
12610 | we are interested in. */ | |
3019eac3 | 12611 | |
80626a55 | 12612 | static void |
73869dc2 | 12613 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12614 | dwp_file *dwp_file) |
3019eac3 | 12615 | { |
80626a55 DE |
12616 | const struct dwop_section_names *names = &dwop_section_names; |
12617 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12618 | |
80626a55 | 12619 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12620 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12621 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12622 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12623 | |
80626a55 | 12624 | /* Look for specific sections that we need. */ |
fbedd546 | 12625 | if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12626 | { |
049412e3 | 12627 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12628 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 | 12629 | } |
fbedd546 | 12630 | else if (names->cu_index.matches (sectp->name)) |
80626a55 | 12631 | { |
049412e3 | 12632 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12633 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 | 12634 | } |
fbedd546 | 12635 | else if (names->tu_index.matches (sectp->name)) |
80626a55 | 12636 | { |
049412e3 | 12637 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12638 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12639 | } |
12640 | } | |
3019eac3 | 12641 | |
73869dc2 DE |
12642 | /* This function is mapped across the sections and remembers the offset and |
12643 | size of each of the DWP version 2 debugging sections that we are interested | |
12644 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12645 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12646 | |
12647 | static void | |
12648 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12649 | { | |
9a3c8263 | 12650 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12651 | const struct dwop_section_names *names = &dwop_section_names; |
12652 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12653 | ||
12654 | /* Record the ELF section number for later lookup: this is what the | |
12655 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12656 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12657 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12658 | ||
12659 | /* Look for specific sections that we need. */ | |
fbedd546 | 12660 | if (names->abbrev_dwo.matches (sectp->name)) |
73869dc2 | 12661 | { |
049412e3 | 12662 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12663 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 | 12664 | } |
fbedd546 | 12665 | else if (names->info_dwo.matches (sectp->name)) |
73869dc2 | 12666 | { |
049412e3 | 12667 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12668 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 | 12669 | } |
fbedd546 | 12670 | else if (names->line_dwo.matches (sectp->name)) |
73869dc2 | 12671 | { |
049412e3 | 12672 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12673 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 | 12674 | } |
fbedd546 | 12675 | else if (names->loc_dwo.matches (sectp->name)) |
73869dc2 | 12676 | { |
049412e3 | 12677 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12678 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 | 12679 | } |
fbedd546 | 12680 | else if (names->macinfo_dwo.matches (sectp->name)) |
73869dc2 | 12681 | { |
049412e3 | 12682 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12683 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 | 12684 | } |
fbedd546 | 12685 | else if (names->macro_dwo.matches (sectp->name)) |
73869dc2 | 12686 | { |
049412e3 | 12687 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12688 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 | 12689 | } |
fbedd546 | 12690 | else if (names->str_offsets_dwo.matches (sectp->name)) |
73869dc2 | 12691 | { |
049412e3 | 12692 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12693 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 | 12694 | } |
fbedd546 | 12695 | else if (names->types_dwo.matches (sectp->name)) |
73869dc2 | 12696 | { |
049412e3 | 12697 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12698 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12699 | } |
12700 | } | |
12701 | ||
d2854d8d CT |
12702 | /* This function is mapped across the sections and remembers the offset and |
12703 | size of each of the DWP version 5 debugging sections that we are interested | |
12704 | in. This is split into a separate function because we don't know if we | |
12705 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12706 | ||
12707 | static void | |
12708 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12709 | { | |
12710 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12711 | const struct dwop_section_names *names = &dwop_section_names; | |
12712 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12713 | ||
12714 | /* Record the ELF section number for later lookup: this is what the | |
12715 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12716 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12717 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12718 | ||
12719 | /* Look for specific sections that we need. */ | |
fbedd546 | 12720 | if (names->abbrev_dwo.matches (sectp->name)) |
d2854d8d CT |
12721 | { |
12722 | dwp_file->sections.abbrev.s.section = sectp; | |
12723 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12724 | } | |
fbedd546 | 12725 | else if (names->info_dwo.matches (sectp->name)) |
d2854d8d CT |
12726 | { |
12727 | dwp_file->sections.info.s.section = sectp; | |
12728 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12729 | } | |
fbedd546 | 12730 | else if (names->line_dwo.matches (sectp->name)) |
d2854d8d CT |
12731 | { |
12732 | dwp_file->sections.line.s.section = sectp; | |
12733 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12734 | } | |
fbedd546 | 12735 | else if (names->loclists_dwo.matches (sectp->name)) |
d2854d8d CT |
12736 | { |
12737 | dwp_file->sections.loclists.s.section = sectp; | |
12738 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12739 | } | |
fbedd546 | 12740 | else if (names->macro_dwo.matches (sectp->name)) |
d2854d8d CT |
12741 | { |
12742 | dwp_file->sections.macro.s.section = sectp; | |
12743 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12744 | } | |
fbedd546 | 12745 | else if (names->rnglists_dwo.matches (sectp->name)) |
d2854d8d CT |
12746 | { |
12747 | dwp_file->sections.rnglists.s.section = sectp; | |
12748 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12749 | } | |
fbedd546 | 12750 | else if (names->str_offsets_dwo.matches (sectp->name)) |
d2854d8d CT |
12751 | { |
12752 | dwp_file->sections.str_offsets.s.section = sectp; | |
12753 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
12754 | } | |
12755 | } | |
12756 | ||
80626a55 | 12757 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12758 | |
80626a55 DE |
12759 | static hashval_t |
12760 | hash_dwp_loaded_cutus (const void *item) | |
12761 | { | |
9a3c8263 | 12762 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12763 | |
80626a55 DE |
12764 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12765 | return dwo_unit->signature; | |
3019eac3 DE |
12766 | } |
12767 | ||
80626a55 | 12768 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12769 | |
80626a55 DE |
12770 | static int |
12771 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12772 | { |
9a3c8263 SM |
12773 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12774 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12775 | |
80626a55 DE |
12776 | return dua->signature == dub->signature; |
12777 | } | |
3019eac3 | 12778 | |
80626a55 | 12779 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12780 | |
48b490f2 | 12781 | static htab_up |
298e9637 | 12782 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12783 | { |
48b490f2 TT |
12784 | return htab_up (htab_create_alloc (3, |
12785 | hash_dwp_loaded_cutus, | |
12786 | eq_dwp_loaded_cutus, | |
12787 | NULL, xcalloc, xfree)); | |
80626a55 | 12788 | } |
3019eac3 | 12789 | |
ab5088bf DE |
12790 | /* Try to open DWP file FILE_NAME. |
12791 | The result is the bfd handle of the file. | |
12792 | If there is a problem finding or opening the file, return NULL. | |
12793 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12794 | same as symfile_bfd_open. */ | |
12795 | ||
192b62ce | 12796 | static gdb_bfd_ref_ptr |
976ca316 | 12797 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 12798 | { |
976ca316 | 12799 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12800 | 1 /*is_dwp*/, |
192b62ce | 12801 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12802 | if (abfd != NULL) |
12803 | return abfd; | |
12804 | ||
12805 | /* Work around upstream bug 15652. | |
12806 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12807 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12808 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12809 | of the executable's path may have discarded the needed info. | |
12810 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12811 | .gnu_debuglink, but that doesn't exist yet.] | |
12812 | Strip the directory from FILE_NAME and search again. */ | |
12813 | if (*debug_file_directory != '\0') | |
12814 | { | |
12815 | /* Don't implicitly search the current directory here. | |
12816 | If the user wants to search "." to handle this case, | |
12817 | it must be added to debug-file-directory. */ | |
976ca316 SM |
12818 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
12819 | 1 /*is_dwp*/, | |
6ac97d4c DE |
12820 | 0 /*search_cwd*/); |
12821 | } | |
12822 | ||
12823 | return NULL; | |
ab5088bf DE |
12824 | } |
12825 | ||
80626a55 DE |
12826 | /* Initialize the use of the DWP file for the current objfile. |
12827 | By convention the name of the DWP file is ${objfile}.dwp. | |
12828 | The result is NULL if it can't be found. */ | |
a766d390 | 12829 | |
400174b1 | 12830 | static std::unique_ptr<struct dwp_file> |
976ca316 | 12831 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 12832 | { |
976ca316 | 12833 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 12834 | |
82bf32bc JK |
12835 | /* Try to find first .dwp for the binary file before any symbolic links |
12836 | resolving. */ | |
6c447423 DE |
12837 | |
12838 | /* If the objfile is a debug file, find the name of the real binary | |
12839 | file and get the name of dwp file from there. */ | |
d721ba37 | 12840 | std::string dwp_name; |
6c447423 DE |
12841 | if (objfile->separate_debug_objfile_backlink != NULL) |
12842 | { | |
12843 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12844 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12845 | |
d721ba37 | 12846 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12847 | } |
12848 | else | |
d721ba37 PA |
12849 | dwp_name = objfile->original_name; |
12850 | ||
12851 | dwp_name += ".dwp"; | |
80626a55 | 12852 | |
976ca316 | 12853 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12854 | if (dbfd == NULL |
12855 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12856 | { | |
12857 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12858 | dwp_name = objfile_name (objfile); |
12859 | dwp_name += ".dwp"; | |
976ca316 | 12860 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12861 | } |
12862 | ||
80626a55 DE |
12863 | if (dbfd == NULL) |
12864 | { | |
6f738b01 SM |
12865 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
12866 | ||
400174b1 | 12867 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12868 | } |
400174b1 TT |
12869 | |
12870 | const char *name = bfd_get_filename (dbfd.get ()); | |
12871 | std::unique_ptr<struct dwp_file> dwp_file | |
12872 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12873 | |
0a0f4c01 | 12874 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12875 | dwp_file->elf_sections = |
976ca316 | 12876 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
12877 | dwp_file->num_sections, asection *); |
12878 | ||
5bb6e9dd TT |
12879 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12880 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
12881 | dwp_file.get ()); | |
80626a55 | 12882 | |
976ca316 | 12883 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 12884 | |
976ca316 | 12885 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 12886 | |
73869dc2 | 12887 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12888 | if (dwp_file->cus && dwp_file->tus |
12889 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12890 | { |
12891 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12892 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12893 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12894 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12895 | " TU version %s [in DWP file %s]"), | |
12896 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12897 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12898 | } |
08302ed2 DE |
12899 | |
12900 | if (dwp_file->cus) | |
12901 | dwp_file->version = dwp_file->cus->version; | |
12902 | else if (dwp_file->tus) | |
12903 | dwp_file->version = dwp_file->tus->version; | |
12904 | else | |
12905 | dwp_file->version = 2; | |
73869dc2 | 12906 | |
5bb6e9dd TT |
12907 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12908 | { | |
12909 | if (dwp_file->version == 2) | |
12910 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
12911 | dwp_file.get ()); | |
12912 | else | |
12913 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
12914 | dwp_file.get ()); | |
12915 | } | |
73869dc2 | 12916 | |
298e9637 SM |
12917 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12918 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12919 | |
6f738b01 SM |
12920 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
12921 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
12922 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12923 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12924 | |
12925 | return dwp_file; | |
3019eac3 | 12926 | } |
c906108c | 12927 | |
ab5088bf DE |
12928 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12929 | ||
12930 | static struct dwp_file * | |
976ca316 | 12931 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 12932 | { |
976ca316 | 12933 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12934 | { |
976ca316 SM |
12935 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
12936 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 12937 | } |
976ca316 | 12938 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12939 | } |
12940 | ||
80626a55 DE |
12941 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12942 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12943 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12944 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12945 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12946 | ||
12947 | This is called, for example, when wanting to read a variable with a | |
12948 | complex location. Therefore we don't want to do file i/o for every call. | |
12949 | Therefore we don't want to look for a DWO file on every call. | |
12950 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12951 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12952 | for a DWO file. | |
12953 | ||
1c658ad5 | 12954 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12955 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12956 | |
3019eac3 | 12957 | static struct dwo_unit * |
4ab09049 | 12958 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12959 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12960 | { |
976ca316 SM |
12961 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
12962 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
12963 | const char *kind = is_debug_types ? "TU" : "CU"; |
12964 | void **dwo_file_slot; | |
3019eac3 | 12965 | struct dwo_file *dwo_file; |
80626a55 | 12966 | struct dwp_file *dwp_file; |
cb1df416 | 12967 | |
6a506a2d DE |
12968 | /* First see if there's a DWP file. |
12969 | If we have a DWP file but didn't find the DWO inside it, don't | |
12970 | look for the original DWO file. It makes gdb behave differently | |
12971 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12972 | |
976ca316 | 12973 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 12974 | if (dwp_file != NULL) |
cf2c3c16 | 12975 | { |
80626a55 DE |
12976 | const struct dwp_hash_table *dwp_htab = |
12977 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12978 | ||
12979 | if (dwp_htab != NULL) | |
12980 | { | |
12981 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
12982 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
12983 | is_debug_types); | |
80626a55 DE |
12984 | |
12985 | if (dwo_cutu != NULL) | |
12986 | { | |
6f738b01 SM |
12987 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
12988 | kind, hex_string (signature), | |
12989 | host_address_to_string (dwo_cutu)); | |
12990 | ||
80626a55 DE |
12991 | return dwo_cutu; |
12992 | } | |
12993 | } | |
12994 | } | |
6a506a2d | 12995 | else |
80626a55 | 12996 | { |
6a506a2d | 12997 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12998 | |
976ca316 | 12999 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13000 | if (*dwo_file_slot == NULL) |
80626a55 | 13001 | { |
6a506a2d | 13002 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13003 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13004 | } |
6a506a2d | 13005 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13006 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13007 | |
6a506a2d | 13008 | if (dwo_file != NULL) |
19c3d4c9 | 13009 | { |
6a506a2d DE |
13010 | struct dwo_unit *dwo_cutu = NULL; |
13011 | ||
13012 | if (is_debug_types && dwo_file->tus) | |
13013 | { | |
13014 | struct dwo_unit find_dwo_cutu; | |
13015 | ||
13016 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13017 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13018 | dwo_cutu |
b0b6a987 TT |
13019 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13020 | &find_dwo_cutu); | |
6a506a2d | 13021 | } |
33c5cd75 | 13022 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13023 | { |
33c5cd75 DB |
13024 | struct dwo_unit find_dwo_cutu; |
13025 | ||
13026 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13027 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13028 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13029 | &find_dwo_cutu); |
6a506a2d DE |
13030 | } |
13031 | ||
13032 | if (dwo_cutu != NULL) | |
13033 | { | |
6f738b01 SM |
13034 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13035 | kind, dwo_name, hex_string (signature), | |
13036 | host_address_to_string (dwo_cutu)); | |
13037 | ||
6a506a2d | 13038 | return dwo_cutu; |
80626a55 DE |
13039 | } |
13040 | } | |
2e276125 | 13041 | } |
9cdd5dbd | 13042 | |
80626a55 DE |
13043 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13044 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13045 | correctly to find the file. */ | |
13046 | ||
6f738b01 SM |
13047 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13048 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13049 | |
6656a72d DE |
13050 | /* This is a warning and not a complaint because it can be caused by |
13051 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13052 | { |
13053 | /* Print the name of the DWP file if we looked there, helps the user | |
13054 | better diagnose the problem. */ | |
791afaa2 | 13055 | std::string dwp_text; |
43942612 DE |
13056 | |
13057 | if (dwp_file != NULL) | |
791afaa2 TT |
13058 | dwp_text = string_printf (" [in DWP file %s]", |
13059 | lbasename (dwp_file->name)); | |
43942612 | 13060 | |
9d8780f0 | 13061 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13062 | " [in module %s]"), |
4ab09049 SM |
13063 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13064 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13065 | } |
3019eac3 | 13066 | return NULL; |
5fb290d7 DJ |
13067 | } |
13068 | ||
80626a55 DE |
13069 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13070 | See lookup_dwo_cutu_unit for details. */ | |
13071 | ||
13072 | static struct dwo_unit * | |
4ab09049 | 13073 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13074 | ULONGEST signature) |
13075 | { | |
4ab09049 SM |
13076 | gdb_assert (!cu->per_cu->is_debug_types); |
13077 | ||
13078 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13079 | } |
13080 | ||
13081 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13082 | See lookup_dwo_cutu_unit for details. */ | |
13083 | ||
13084 | static struct dwo_unit * | |
4ab09049 | 13085 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13086 | { |
4ab09049 SM |
13087 | gdb_assert (cu->per_cu->is_debug_types); |
13088 | ||
13089 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13090 | ||
13091 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13092 | } |
13093 | ||
89e63ee4 DE |
13094 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13095 | ||
13096 | static int | |
13097 | queue_and_load_dwo_tu (void **slot, void *info) | |
13098 | { | |
13099 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13100 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13101 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13102 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13103 | |
13104 | if (sig_type != NULL) | |
13105 | { | |
13106 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13107 | ||
13108 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13109 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13110 | while processing PER_CU. */ | |
120ce1b5 | 13111 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13112 | load_full_type_unit (sig_cu, cu->per_objfile); |
13113 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13114 | } |
13115 | ||
13116 | return 1; | |
13117 | } | |
13118 | ||
1b555f17 | 13119 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13120 | The DWO may have the only definition of the type, though it may not be |
13121 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13122 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13123 | ||
13124 | static void | |
1b555f17 | 13125 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13126 | { |
13127 | struct dwo_unit *dwo_unit; | |
13128 | struct dwo_file *dwo_file; | |
13129 | ||
1b555f17 SM |
13130 | gdb_assert (cu != nullptr); |
13131 | gdb_assert (!cu->per_cu->is_debug_types); | |
13132 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13133 | |
1b555f17 | 13134 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13135 | gdb_assert (dwo_unit != NULL); |
13136 | ||
13137 | dwo_file = dwo_unit->dwo_file; | |
13138 | if (dwo_file->tus != NULL) | |
1b555f17 | 13139 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13140 | } |
13141 | ||
3019eac3 | 13142 | /* Read in various DIEs. */ |
348e048f | 13143 | |
d389af10 | 13144 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13145 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13146 | already referenced by DW_AT_abstract_origin from the children of the | |
13147 | current DIE. */ | |
d389af10 JK |
13148 | |
13149 | static void | |
13150 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13151 | { | |
13152 | struct die_info *child_die; | |
791afaa2 | 13153 | sect_offset *offsetp; |
d389af10 JK |
13154 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13155 | struct die_info *origin_die; | |
13156 | /* Iterator of the ORIGIN_DIE children. */ | |
13157 | struct die_info *origin_child_die; | |
d389af10 | 13158 | struct attribute *attr; |
cd02d79d PA |
13159 | struct dwarf2_cu *origin_cu; |
13160 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13161 | |
13162 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13163 | if (!attr) | |
13164 | return; | |
13165 | ||
cd02d79d PA |
13166 | /* Note that following die references may follow to a die in a |
13167 | different cu. */ | |
13168 | ||
13169 | origin_cu = cu; | |
13170 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13171 | ||
13172 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13173 | symbols in. */ | |
13174 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13175 | origin_cu->list_in_scope = cu->list_in_scope; | |
13176 | ||
edb3359d DJ |
13177 | if (die->tag != origin_die->tag |
13178 | && !(die->tag == DW_TAG_inlined_subroutine | |
13179 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13180 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13181 | sect_offset_str (die->sect_off), |
13182 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13183 | |
34dc0f95 TBA |
13184 | /* Find if the concrete and abstract trees are structurally the |
13185 | same. This is a shallow traversal and it is not bullet-proof; | |
13186 | the compiler can trick the debugger into believing that the trees | |
13187 | are isomorphic, whereas they actually are not. However, the | |
13188 | likelyhood of this happening is pretty low, and a full-fledged | |
13189 | check would be an overkill. */ | |
13190 | bool are_isomorphic = true; | |
13191 | die_info *concrete_child = die->child; | |
13192 | die_info *abstract_child = origin_die->child; | |
13193 | while (concrete_child != nullptr || abstract_child != nullptr) | |
13194 | { | |
13195 | if (concrete_child == nullptr | |
13196 | || abstract_child == nullptr | |
13197 | || concrete_child->tag != abstract_child->tag) | |
13198 | { | |
13199 | are_isomorphic = false; | |
13200 | break; | |
13201 | } | |
13202 | ||
13203 | concrete_child = concrete_child->sibling; | |
13204 | abstract_child = abstract_child->sibling; | |
13205 | } | |
13206 | ||
13207 | /* Walk the origin's children in parallel to the concrete children. | |
13208 | This helps match an origin child in case the debug info misses | |
13209 | DW_AT_abstract_origin attributes. Keep in mind that the abstract | |
13210 | origin tree may not have the same tree structure as the concrete | |
13211 | DIE, though. */ | |
13212 | die_info *corresponding_abstract_child | |
13213 | = are_isomorphic ? origin_die->child : nullptr; | |
13214 | ||
791afaa2 | 13215 | std::vector<sect_offset> offsets; |
d389af10 | 13216 | |
3ea89b92 PMR |
13217 | for (child_die = die->child; |
13218 | child_die && child_die->tag; | |
436c571c | 13219 | child_die = child_die->sibling) |
3ea89b92 PMR |
13220 | { |
13221 | struct die_info *child_origin_die; | |
13222 | struct dwarf2_cu *child_origin_cu; | |
13223 | ||
13224 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13225 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13226 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13227 | present in the abstract instance but not referenced in the concrete | |
13228 | one. */ | |
216f72a1 | 13229 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13230 | || child_die->tag == DW_TAG_GNU_call_site) |
34dc0f95 TBA |
13231 | { |
13232 | if (are_isomorphic) | |
13233 | corresponding_abstract_child | |
13234 | = corresponding_abstract_child->sibling; | |
13235 | continue; | |
13236 | } | |
3ea89b92 | 13237 | |
c38f313d DJ |
13238 | /* For each CHILD_DIE, find the corresponding child of |
13239 | ORIGIN_DIE. If there is more than one layer of | |
13240 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13241 | but GCC versions at least through 4.4 generate this (GCC PR | |
13242 | 40573). */ | |
3ea89b92 PMR |
13243 | child_origin_die = child_die; |
13244 | child_origin_cu = cu; | |
c38f313d DJ |
13245 | while (1) |
13246 | { | |
cd02d79d PA |
13247 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13248 | child_origin_cu); | |
c38f313d DJ |
13249 | if (attr == NULL) |
13250 | break; | |
cd02d79d PA |
13251 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13252 | &child_origin_cu); | |
c38f313d DJ |
13253 | } |
13254 | ||
34dc0f95 TBA |
13255 | /* If missing DW_AT_abstract_origin, try the corresponding child |
13256 | of the origin. Clang emits such lexical scopes. */ | |
13257 | if (child_origin_die == child_die | |
13258 | && dwarf2_attr (child_die, DW_AT_abstract_origin, cu) == nullptr | |
13259 | && are_isomorphic | |
13260 | && child_die->tag == DW_TAG_lexical_block) | |
13261 | child_origin_die = corresponding_abstract_child; | |
13262 | ||
d389af10 JK |
13263 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13264 | counterpart may exist. */ | |
c38f313d | 13265 | if (child_origin_die != child_die) |
d389af10 | 13266 | { |
edb3359d DJ |
13267 | if (child_die->tag != child_origin_die->tag |
13268 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13269 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13270 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13271 | "different tags"), |
9d8780f0 SM |
13272 | sect_offset_str (child_die->sect_off), |
13273 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13274 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13275 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13276 | "different parents"), |
9d8780f0 SM |
13277 | sect_offset_str (child_die->sect_off), |
13278 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13279 | else |
791afaa2 | 13280 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13281 | } |
34dc0f95 TBA |
13282 | |
13283 | if (are_isomorphic) | |
13284 | corresponding_abstract_child = corresponding_abstract_child->sibling; | |
d389af10 | 13285 | } |
791afaa2 TT |
13286 | std::sort (offsets.begin (), offsets.end ()); |
13287 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13288 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13289 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13290 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13291 | "to DIE %s as their abstract origin"), |
13292 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13293 | |
791afaa2 | 13294 | offsetp = offsets.data (); |
d389af10 JK |
13295 | origin_child_die = origin_die->child; |
13296 | while (origin_child_die && origin_child_die->tag) | |
13297 | { | |
13298 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13299 | while (offsetp < offsets_end |
9c541725 | 13300 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13301 | offsetp++; |
b64f50a1 | 13302 | if (offsetp >= offsets_end |
9c541725 | 13303 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13304 | { |
adde2bff DE |
13305 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13306 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13307 | This can happen with mutually referenced abstract_origins. | |
13308 | PR 16581. */ | |
13309 | if (!origin_child_die->in_process) | |
13310 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13311 | } |
436c571c | 13312 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13313 | } |
cd02d79d | 13314 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13315 | |
13316 | if (cu != origin_cu) | |
13317 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13318 | } |
13319 | ||
c906108c | 13320 | static void |
e7c27a73 | 13321 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13322 | { |
5e22e966 | 13323 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13324 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13325 | struct context_stack *newobj; |
c906108c SS |
13326 | CORE_ADDR lowpc; |
13327 | CORE_ADDR highpc; | |
13328 | struct die_info *child_die; | |
edb3359d | 13329 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13330 | const char *name; |
e142c38c | 13331 | CORE_ADDR baseaddr; |
801e3a5b | 13332 | struct block *block; |
edb3359d | 13333 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13334 | std::vector<struct symbol *> template_args; |
34eaf542 | 13335 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13336 | |
13337 | if (inlined_func) | |
13338 | { | |
13339 | /* If we do not have call site information, we can't show the | |
13340 | caller of this inlined function. That's too confusing, so | |
13341 | only use the scope for local variables. */ | |
13342 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13343 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13344 | if (call_line == NULL || call_file == NULL) | |
13345 | { | |
13346 | read_lexical_block_scope (die, cu); | |
13347 | return; | |
13348 | } | |
13349 | } | |
c906108c | 13350 | |
b3b3bada | 13351 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13352 | |
94af9270 | 13353 | name = dwarf2_name (die, cu); |
c906108c | 13354 | |
e8d05480 JB |
13355 | /* Ignore functions with missing or empty names. These are actually |
13356 | illegal according to the DWARF standard. */ | |
13357 | if (name == NULL) | |
13358 | { | |
b98664d3 | 13359 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13360 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13361 | return; |
13362 | } | |
13363 | ||
13364 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13365 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13366 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13367 | { |
ae4d0c03 | 13368 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13369 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13370 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13371 | "for subprogram DIE at %s"), |
13372 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13373 | return; |
13374 | } | |
c906108c | 13375 | |
3e29f34a MR |
13376 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13377 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13378 | |
34eaf542 TT |
13379 | /* If we have any template arguments, then we must allocate a |
13380 | different sort of symbol. */ | |
436c571c | 13381 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13382 | { |
13383 | if (child_die->tag == DW_TAG_template_type_param | |
13384 | || child_die->tag == DW_TAG_template_value_param) | |
13385 | { | |
8c14c3a3 | 13386 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13387 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13388 | break; |
13389 | } | |
13390 | } | |
13391 | ||
702cf3f5 | 13392 | gdb_assert (cu->get_builder () != nullptr); |
c24bdb02 | 13393 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13394 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13395 | (struct symbol *) templ_func); | |
4c2df51b | 13396 | |
81873cc8 | 13397 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13398 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13399 | cu->language); |
13400 | ||
4cecd739 DJ |
13401 | /* If there is a location expression for DW_AT_frame_base, record |
13402 | it. */ | |
e142c38c | 13403 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13404 | if (attr != nullptr) |
fe978cb0 | 13405 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13406 | |
63e43d3a PMR |
13407 | /* If there is a location for the static link, record it. */ |
13408 | newobj->static_link = NULL; | |
13409 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13410 | if (attr != nullptr) |
63e43d3a | 13411 | { |
224c3ddb SM |
13412 | newobj->static_link |
13413 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13414 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13415 | cu->addr_type ()); |
63e43d3a PMR |
13416 | } |
13417 | ||
c24bdb02 | 13418 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13419 | |
639d11d3 | 13420 | if (die->child != NULL) |
c906108c | 13421 | { |
639d11d3 | 13422 | child_die = die->child; |
c906108c SS |
13423 | while (child_die && child_die->tag) |
13424 | { | |
34eaf542 TT |
13425 | if (child_die->tag == DW_TAG_template_type_param |
13426 | || child_die->tag == DW_TAG_template_value_param) | |
13427 | { | |
13428 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13429 | ||
f1078f66 | 13430 | if (arg != NULL) |
2f4732b0 | 13431 | template_args.push_back (arg); |
34eaf542 TT |
13432 | } |
13433 | else | |
13434 | process_die (child_die, cu); | |
436c571c | 13435 | child_die = child_die->sibling; |
c906108c SS |
13436 | } |
13437 | } | |
13438 | ||
d389af10 JK |
13439 | inherit_abstract_dies (die, cu); |
13440 | ||
4a811a97 UW |
13441 | /* If we have a DW_AT_specification, we might need to import using |
13442 | directives from the context of the specification DIE. See the | |
13443 | comment in determine_prefix. */ | |
13444 | if (cu->language == language_cplus | |
13445 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13446 | { | |
13447 | struct dwarf2_cu *spec_cu = cu; | |
13448 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13449 | ||
13450 | while (spec_die) | |
13451 | { | |
13452 | child_die = spec_die->child; | |
13453 | while (child_die && child_die->tag) | |
13454 | { | |
13455 | if (child_die->tag == DW_TAG_imported_module) | |
13456 | process_die (child_die, spec_cu); | |
436c571c | 13457 | child_die = child_die->sibling; |
4a811a97 UW |
13458 | } |
13459 | ||
13460 | /* In some cases, GCC generates specification DIEs that | |
13461 | themselves contain DW_AT_specification attributes. */ | |
13462 | spec_die = die_specification (spec_die, &spec_cu); | |
13463 | } | |
13464 | } | |
13465 | ||
c24bdb02 | 13466 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13467 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13468 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13469 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13470 | |
df8a16a1 | 13471 | /* For C++, set the block's scope. */ |
45280282 IB |
13472 | if ((cu->language == language_cplus |
13473 | || cu->language == language_fortran | |
c44af4eb TT |
13474 | || cu->language == language_d |
13475 | || cu->language == language_rust) | |
4d4ec4e5 | 13476 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13477 | block_set_scope (block, determine_prefix (die, cu), |
13478 | &objfile->objfile_obstack); | |
df8a16a1 | 13479 | |
801e3a5b JB |
13480 | /* If we have address ranges, record them. */ |
13481 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13482 | |
a60f3166 | 13483 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13484 | |
34eaf542 | 13485 | /* Attach template arguments to function. */ |
2f4732b0 | 13486 | if (!template_args.empty ()) |
34eaf542 TT |
13487 | { |
13488 | gdb_assert (templ_func != NULL); | |
13489 | ||
2f4732b0 | 13490 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13491 | templ_func->template_arguments |
dda83cd7 | 13492 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13493 | templ_func->n_template_arguments); |
34eaf542 | 13494 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13495 | template_args.data (), |
34eaf542 | 13496 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13497 | |
13498 | /* Make sure that the symtab is set on the new symbols. Even | |
13499 | though they don't appear in this symtab directly, other parts | |
13500 | of gdb assume that symbols do, and this is reasonably | |
13501 | true. */ | |
8634679f | 13502 | for (symbol *sym : template_args) |
3e1d3d8c | 13503 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13504 | } |
13505 | ||
208d8187 JB |
13506 | /* In C++, we can have functions nested inside functions (e.g., when |
13507 | a function declares a class that has methods). This means that | |
13508 | when we finish processing a function scope, we may need to go | |
13509 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13510 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13511 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13512 | |
921e78cf JB |
13513 | /* If we've finished processing a top-level function, subsequent |
13514 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13515 | if (cu->get_builder ()->outermost_context_p ()) |
13516 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13517 | } |
13518 | ||
13519 | /* Process all the DIES contained within a lexical block scope. Start | |
13520 | a new scope, process the dies, and then close the scope. */ | |
13521 | ||
13522 | static void | |
e7c27a73 | 13523 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13524 | { |
5e22e966 | 13525 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13526 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13527 | CORE_ADDR lowpc, highpc; |
13528 | struct die_info *child_die; | |
e142c38c DJ |
13529 | CORE_ADDR baseaddr; |
13530 | ||
b3b3bada | 13531 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13532 | |
13533 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13534 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13535 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13536 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13537 | describe ranges. */ |
e385593e JK |
13538 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13539 | { | |
13540 | case PC_BOUNDS_NOT_PRESENT: | |
13541 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13542 | there was no wrapping by that DW_TAG_lexical_block. | |
13543 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13544 | for (child_die = die->child; | |
13545 | child_die != NULL && child_die->tag; | |
436c571c | 13546 | child_die = child_die->sibling) |
4f7bc5ed TT |
13547 | { |
13548 | /* We might already be processing this DIE. This can happen | |
13549 | in an unusual circumstance -- where a subroutine A | |
13550 | appears lexically in another subroutine B, but A actually | |
13551 | inlines B. The recursion is broken here, rather than in | |
13552 | inherit_abstract_dies, because it seems better to simply | |
13553 | drop concrete children here. */ | |
13554 | if (!child_die->in_process) | |
13555 | process_die (child_die, cu); | |
13556 | } | |
e385593e JK |
13557 | return; |
13558 | case PC_BOUNDS_INVALID: | |
13559 | return; | |
13560 | } | |
3e29f34a MR |
13561 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13562 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13563 | |
c24bdb02 | 13564 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13565 | if (die->child != NULL) |
c906108c | 13566 | { |
639d11d3 | 13567 | child_die = die->child; |
c906108c SS |
13568 | while (child_die && child_die->tag) |
13569 | { | |
e7c27a73 | 13570 | process_die (child_die, cu); |
436c571c | 13571 | child_die = child_die->sibling; |
c906108c SS |
13572 | } |
13573 | } | |
3ea89b92 | 13574 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13575 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13576 | |
c24bdb02 KS |
13577 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13578 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13579 | { |
801e3a5b | 13580 | struct block *block |
dda83cd7 | 13581 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13582 | cstk.start_addr, highpc); |
801e3a5b JB |
13583 | |
13584 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13585 | do here, means that recording a parent's ranges entails |
13586 | walking across all its children's ranges as they appear in | |
13587 | the address map, which is quadratic behavior. | |
13588 | ||
13589 | It would be nicer to record the parent's ranges before | |
13590 | traversing its children, simply overriding whatever you find | |
13591 | there. But since we don't even decide whether to create a | |
13592 | block until after we've traversed its children, that's hard | |
13593 | to do. */ | |
801e3a5b | 13594 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13595 | } |
c24bdb02 KS |
13596 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13597 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13598 | } |
13599 | ||
216f72a1 | 13600 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13601 | |
13602 | static void | |
13603 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13604 | { | |
5e22e966 | 13605 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13606 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13607 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13608 | CORE_ADDR pc, baseaddr; |
13609 | struct attribute *attr; | |
13610 | struct call_site *call_site, call_site_local; | |
13611 | void **slot; | |
13612 | int nparams; | |
13613 | struct die_info *child_die; | |
13614 | ||
b3b3bada | 13615 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13616 | |
216f72a1 JK |
13617 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13618 | if (attr == NULL) | |
13619 | { | |
13620 | /* This was a pre-DWARF-5 GNU extension alias | |
13621 | for DW_AT_call_return_pc. */ | |
13622 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13623 | } | |
96408a79 SA |
13624 | if (!attr) |
13625 | { | |
b98664d3 | 13626 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13627 | "DIE %s [in module %s]"), |
13628 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13629 | return; |
13630 | } | |
95f982e5 | 13631 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13632 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13633 | |
13634 | if (cu->call_site_htab == NULL) | |
13635 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13636 | NULL, &objfile->objfile_obstack, | |
13637 | hashtab_obstack_allocate, NULL); | |
13638 | call_site_local.pc = pc; | |
13639 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13640 | if (*slot != NULL) | |
13641 | { | |
b98664d3 | 13642 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13643 | "DIE %s [in module %s]"), |
13644 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13645 | objfile_name (objfile)); |
96408a79 SA |
13646 | return; |
13647 | } | |
13648 | ||
13649 | /* Count parameters at the caller. */ | |
13650 | ||
13651 | nparams = 0; | |
13652 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13653 | child_die = child_die->sibling) |
96408a79 | 13654 | { |
216f72a1 | 13655 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13656 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13657 | { |
b98664d3 | 13658 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13659 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13660 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13661 | objfile_name (objfile)); |
96408a79 SA |
13662 | continue; |
13663 | } | |
13664 | ||
13665 | nparams++; | |
13666 | } | |
13667 | ||
224c3ddb SM |
13668 | call_site |
13669 | = ((struct call_site *) | |
13670 | obstack_alloc (&objfile->objfile_obstack, | |
13671 | sizeof (*call_site) | |
13672 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13673 | *slot = call_site; |
13674 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13675 | call_site->pc = pc; | |
13676 | ||
216f72a1 JK |
13677 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13678 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13679 | { |
13680 | struct die_info *func_die; | |
13681 | ||
13682 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13683 | for (func_die = die->parent; | |
13684 | func_die && func_die->tag != DW_TAG_subprogram | |
13685 | && func_die->tag != DW_TAG_subroutine_type; | |
13686 | func_die = func_die->parent); | |
13687 | ||
216f72a1 JK |
13688 | /* DW_AT_call_all_calls is a superset |
13689 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13690 | if (func_die |
dda83cd7 SM |
13691 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13692 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13693 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13694 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13695 | { | |
13696 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13697 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13698 | both the initial caller containing the real return address PC and | |
13699 | the final callee containing the current PC of a chain of tail | |
13700 | calls do not need to have the tail call list complete. But any | |
13701 | function candidate for a virtual tail call frame searched via | |
13702 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13703 | determined unambiguously. */ | |
13704 | } | |
13705 | else | |
13706 | { | |
13707 | struct type *func_type = NULL; | |
13708 | ||
13709 | if (func_die) | |
13710 | func_type = get_die_type (func_die, cu); | |
13711 | if (func_type != NULL) | |
13712 | { | |
78134374 | 13713 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13714 | |
13715 | /* Enlist this call site to the function. */ | |
13716 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13717 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13718 | } | |
13719 | else | |
b98664d3 | 13720 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13721 | "DIE %s [in module %s]"), |
13722 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13723 | } |
13724 | } | |
13725 | ||
216f72a1 JK |
13726 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13727 | if (attr == NULL) | |
13728 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13729 | if (attr == NULL) | |
13730 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13731 | if (attr == NULL) |
216f72a1 JK |
13732 | { |
13733 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13734 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13735 | } | |
96408a79 | 13736 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13737 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13738 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13739 | else if (attr->form_is_block ()) |
96408a79 SA |
13740 | { |
13741 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13742 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13743 | |
8d749320 | 13744 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13745 | dlbaton->data = block->data; |
13746 | dlbaton->size = block->size; | |
a50264ba | 13747 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13748 | dlbaton->per_cu = cu->per_cu; |
13749 | ||
13750 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13751 | } | |
cd6c91b4 | 13752 | else if (attr->form_is_ref ()) |
96408a79 | 13753 | { |
96408a79 SA |
13754 | struct dwarf2_cu *target_cu = cu; |
13755 | struct die_info *target_die; | |
13756 | ||
ac9ec31b | 13757 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13758 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13759 | if (die_is_declaration (target_die, target_cu)) |
13760 | { | |
7d45c7c3 | 13761 | const char *target_physname; |
9112db09 JK |
13762 | |
13763 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13764 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13765 | if (target_physname == NULL) |
9112db09 | 13766 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13767 | if (target_physname == NULL) |
b98664d3 | 13768 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13769 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13770 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13771 | else |
7d455152 | 13772 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13773 | } |
13774 | else | |
13775 | { | |
13776 | CORE_ADDR lowpc; | |
13777 | ||
13778 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13779 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13780 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13781 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13782 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13783 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13784 | else |
3e29f34a MR |
13785 | { |
13786 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13787 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13788 | } | |
96408a79 SA |
13789 | } |
13790 | } | |
13791 | else | |
b98664d3 | 13792 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13793 | "block nor reference, for DIE %s [in module %s]"), |
13794 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13795 | |
13796 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13797 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13798 | |
13799 | for (child_die = die->child; | |
13800 | child_die && child_die->tag; | |
436c571c | 13801 | child_die = child_die->sibling) |
96408a79 | 13802 | { |
96408a79 | 13803 | struct call_site_parameter *parameter; |
1788b2d3 | 13804 | struct attribute *loc, *origin; |
96408a79 | 13805 | |
216f72a1 | 13806 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13807 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
13808 | { |
13809 | /* Already printed the complaint above. */ | |
13810 | continue; | |
13811 | } | |
13812 | ||
13813 | gdb_assert (call_site->parameter_count < nparams); | |
13814 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13815 | ||
1788b2d3 JK |
13816 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13817 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13818 | register is contained in DW_AT_call_value. */ |
96408a79 | 13819 | |
24c5c679 | 13820 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13821 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13822 | if (origin == NULL) | |
13823 | { | |
13824 | /* This was a pre-DWARF-5 GNU extension alias | |
13825 | for DW_AT_call_parameter. */ | |
13826 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13827 | } | |
cd6c91b4 | 13828 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13829 | { |
1788b2d3 | 13830 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13831 | |
0826b30a | 13832 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13833 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13834 | { |
13835 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13836 | binding can be done only inside one CU. Such referenced DIE | |
13837 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13838 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13839 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13840 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13841 | objfile_name (objfile)); |
d76b7dbc JK |
13842 | continue; |
13843 | } | |
9c541725 PA |
13844 | parameter->u.param_cu_off |
13845 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13846 | } |
4fc6c0d5 | 13847 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13848 | { |
b98664d3 | 13849 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13850 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13851 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13852 | continue; |
13853 | } | |
24c5c679 | 13854 | else |
96408a79 | 13855 | { |
9d2246fc TT |
13856 | struct dwarf_block *block = loc->as_block (); |
13857 | ||
24c5c679 | 13858 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 13859 | (block->data, &block->data[block->size]); |
24c5c679 JK |
13860 | if (parameter->u.dwarf_reg != -1) |
13861 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
13862 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
13863 | &block->data[block->size], | |
24c5c679 JK |
13864 | ¶meter->u.fb_offset)) |
13865 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13866 | else | |
13867 | { | |
b98664d3 | 13868 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13869 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13870 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13871 | "[in module %s]"), |
9d8780f0 | 13872 | sect_offset_str (child_die->sect_off), |
9c541725 | 13873 | objfile_name (objfile)); |
24c5c679 JK |
13874 | continue; |
13875 | } | |
96408a79 SA |
13876 | } |
13877 | ||
216f72a1 JK |
13878 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13879 | if (attr == NULL) | |
13880 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13881 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13882 | { |
b98664d3 | 13883 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13884 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13885 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13886 | objfile_name (objfile)); |
96408a79 SA |
13887 | continue; |
13888 | } | |
9d2246fc TT |
13889 | |
13890 | struct dwarf_block *block = attr->as_block (); | |
13891 | parameter->value = block->data; | |
13892 | parameter->value_size = block->size; | |
96408a79 SA |
13893 | |
13894 | /* Parameters are not pre-cleared by memset above. */ | |
13895 | parameter->data_value = NULL; | |
13896 | parameter->data_value_size = 0; | |
13897 | call_site->parameter_count++; | |
13898 | ||
216f72a1 JK |
13899 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13900 | if (attr == NULL) | |
13901 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13902 | if (attr != nullptr) |
96408a79 | 13903 | { |
4fc6c0d5 | 13904 | if (!attr->form_is_block ()) |
b98664d3 | 13905 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13906 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13907 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13908 | objfile_name (objfile)); |
96408a79 SA |
13909 | else |
13910 | { | |
9d2246fc TT |
13911 | block = attr->as_block (); |
13912 | parameter->data_value = block->data; | |
13913 | parameter->data_value_size = block->size; | |
96408a79 SA |
13914 | } |
13915 | } | |
13916 | } | |
13917 | } | |
13918 | ||
71a3c369 TT |
13919 | /* Helper function for read_variable. If DIE represents a virtual |
13920 | table, then return the type of the concrete object that is | |
13921 | associated with the virtual table. Otherwise, return NULL. */ | |
13922 | ||
13923 | static struct type * | |
13924 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13925 | { | |
13926 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13927 | if (attr == NULL) | |
13928 | return NULL; | |
13929 | ||
13930 | /* Find the type DIE. */ | |
13931 | struct die_info *type_die = NULL; | |
13932 | struct dwarf2_cu *type_cu = cu; | |
13933 | ||
cd6c91b4 | 13934 | if (attr->form_is_ref ()) |
71a3c369 TT |
13935 | type_die = follow_die_ref (die, attr, &type_cu); |
13936 | if (type_die == NULL) | |
13937 | return NULL; | |
13938 | ||
13939 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13940 | return NULL; | |
13941 | return die_containing_type (type_die, type_cu); | |
13942 | } | |
13943 | ||
13944 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13945 | ||
13946 | static void | |
13947 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13948 | { | |
13949 | struct rust_vtable_symbol *storage = NULL; | |
13950 | ||
13951 | if (cu->language == language_rust) | |
13952 | { | |
13953 | struct type *containing_type = rust_containing_type (die, cu); | |
13954 | ||
13955 | if (containing_type != NULL) | |
13956 | { | |
5e22e966 | 13957 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13958 | |
8c14c3a3 | 13959 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13960 | storage->concrete_type = containing_type; |
cf724bc9 | 13961 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13962 | } |
13963 | } | |
13964 | ||
e4a62c65 TV |
13965 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13966 | struct attribute *abstract_origin | |
13967 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13968 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13969 | if (res == NULL && loc && abstract_origin) | |
13970 | { | |
13971 | /* We have a variable without a name, but with a location and an abstract | |
13972 | origin. This may be a concrete instance of an abstract variable | |
13973 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13974 | later. */ | |
13975 | struct dwarf2_cu *origin_cu = cu; | |
13976 | struct die_info *origin_die | |
13977 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13978 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13979 | per_objfile->per_bfd->abstract_to_concrete | |
13980 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13981 | } |
71a3c369 TT |
13982 | } |
13983 | ||
43988095 JK |
13984 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13985 | reading .debug_rnglists. | |
13986 | Callback's type should be: | |
13987 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13988 | Return true if the attributes are present and valid, otherwise, | |
13989 | return false. */ | |
13990 | ||
13991 | template <typename Callback> | |
13992 | static bool | |
13993 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 13994 | dwarf_tag tag, Callback &&callback) |
43988095 | 13995 | { |
976ca316 SM |
13996 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13997 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 13998 | bfd *obfd = objfile->obfd; |
43988095 | 13999 | /* Base address selection entry. */ |
2b24b6e4 | 14000 | gdb::optional<CORE_ADDR> base; |
43988095 | 14001 | const gdb_byte *buffer; |
43988095 JK |
14002 | CORE_ADDR baseaddr; |
14003 | bool overflow = false; | |
d0ce17d8 CT |
14004 | ULONGEST addr_index; |
14005 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14006 | |
43988095 | 14007 | base = cu->base_address; |
d0ce17d8 CT |
14008 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14009 | rnglists_section->read (objfile); | |
43988095 | 14010 | |
d0ce17d8 | 14011 | if (offset >= rnglists_section->size) |
43988095 | 14012 | { |
b98664d3 | 14013 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14014 | offset); |
14015 | return false; | |
14016 | } | |
d0ce17d8 | 14017 | buffer = rnglists_section->buffer + offset; |
43988095 | 14018 | |
b3b3bada | 14019 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14020 | |
14021 | while (1) | |
14022 | { | |
7814882a JK |
14023 | /* Initialize it due to a false compiler warning. */ |
14024 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14025 | const gdb_byte *buf_end = (rnglists_section->buffer |
14026 | + rnglists_section->size); | |
43988095 JK |
14027 | unsigned int bytes_read; |
14028 | ||
14029 | if (buffer == buf_end) | |
14030 | { | |
14031 | overflow = true; | |
14032 | break; | |
14033 | } | |
14034 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14035 | switch (rlet) | |
14036 | { | |
14037 | case DW_RLE_end_of_list: | |
14038 | break; | |
14039 | case DW_RLE_base_address: | |
14040 | if (buffer + cu->header.addr_size > buf_end) | |
14041 | { | |
14042 | overflow = true; | |
14043 | break; | |
14044 | } | |
c8a7a66f | 14045 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14046 | buffer += bytes_read; |
14047 | break; | |
dda83cd7 SM |
14048 | case DW_RLE_base_addressx: |
14049 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14050 | buffer += bytes_read; | |
14051 | base = read_addr_index (cu, addr_index); | |
14052 | break; | |
43988095 JK |
14053 | case DW_RLE_start_length: |
14054 | if (buffer + cu->header.addr_size > buf_end) | |
14055 | { | |
14056 | overflow = true; | |
14057 | break; | |
14058 | } | |
c8a7a66f TT |
14059 | range_beginning = cu->header.read_address (obfd, buffer, |
14060 | &bytes_read); | |
43988095 JK |
14061 | buffer += bytes_read; |
14062 | range_end = (range_beginning | |
14063 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14064 | buffer += bytes_read; | |
14065 | if (buffer > buf_end) | |
14066 | { | |
14067 | overflow = true; | |
14068 | break; | |
14069 | } | |
14070 | break; | |
d0ce17d8 | 14071 | case DW_RLE_startx_length: |
dda83cd7 SM |
14072 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14073 | buffer += bytes_read; | |
14074 | range_beginning = read_addr_index (cu, addr_index); | |
14075 | if (buffer > buf_end) | |
14076 | { | |
14077 | overflow = true; | |
14078 | break; | |
14079 | } | |
14080 | range_end = (range_beginning | |
14081 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14082 | buffer += bytes_read; | |
14083 | break; | |
43988095 JK |
14084 | case DW_RLE_offset_pair: |
14085 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14086 | buffer += bytes_read; | |
14087 | if (buffer > buf_end) | |
14088 | { | |
14089 | overflow = true; | |
14090 | break; | |
14091 | } | |
14092 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14093 | buffer += bytes_read; | |
14094 | if (buffer > buf_end) | |
14095 | { | |
14096 | overflow = true; | |
14097 | break; | |
14098 | } | |
14099 | break; | |
14100 | case DW_RLE_start_end: | |
14101 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14102 | { | |
14103 | overflow = true; | |
14104 | break; | |
14105 | } | |
c8a7a66f TT |
14106 | range_beginning = cu->header.read_address (obfd, buffer, |
14107 | &bytes_read); | |
43988095 | 14108 | buffer += bytes_read; |
c8a7a66f | 14109 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14110 | buffer += bytes_read; |
14111 | break; | |
d0ce17d8 | 14112 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14113 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14114 | buffer += bytes_read; | |
14115 | range_beginning = read_addr_index (cu, addr_index); | |
14116 | if (buffer > buf_end) | |
14117 | { | |
14118 | overflow = true; | |
14119 | break; | |
14120 | } | |
14121 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14122 | buffer += bytes_read; | |
14123 | range_end = read_addr_index (cu, addr_index); | |
14124 | break; | |
43988095 | 14125 | default: |
b98664d3 | 14126 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14127 | return false; |
14128 | } | |
14129 | if (rlet == DW_RLE_end_of_list || overflow) | |
14130 | break; | |
14131 | if (rlet == DW_RLE_base_address) | |
14132 | continue; | |
14133 | ||
43988095 JK |
14134 | if (range_beginning > range_end) |
14135 | { | |
14136 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14137 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14138 | return false; |
14139 | } | |
14140 | ||
14141 | /* Empty range entries have no effect. */ | |
14142 | if (range_beginning == range_end) | |
14143 | continue; | |
14144 | ||
d0ce17d8 CT |
14145 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14146 | if (rlet == DW_RLE_offset_pair) | |
14147 | { | |
14148 | if (!base.has_value ()) | |
14149 | { | |
14150 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14151 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14152 | "DW_RLE_offset_pair)")); | |
14153 | return false; | |
14154 | } | |
14155 | ||
14156 | range_beginning += *base; | |
14157 | range_end += *base; | |
14158 | } | |
43988095 JK |
14159 | |
14160 | /* A not-uncommon case of bad debug info. | |
14161 | Don't pollute the addrmap with bad data. */ | |
14162 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14163 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14164 | { |
b98664d3 | 14165 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14166 | " [in module %s]"), objfile_name (objfile)); |
14167 | continue; | |
14168 | } | |
14169 | ||
14170 | callback (range_beginning, range_end); | |
14171 | } | |
14172 | ||
14173 | if (overflow) | |
14174 | { | |
b98664d3 | 14175 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14176 | "for DW_AT_ranges attribute"), |
14177 | offset); | |
14178 | return false; | |
14179 | } | |
14180 | ||
14181 | return true; | |
14182 | } | |
14183 | ||
14184 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14185 | Callback's type should be: | |
14186 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14187 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14188 | |
43988095 | 14189 | template <typename Callback> |
43039443 | 14190 | static int |
d0ce17d8 | 14191 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14192 | Callback &&callback) |
43039443 | 14193 | { |
5e22e966 SM |
14194 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14195 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14196 | struct comp_unit_head *cu_header = &cu->header; |
14197 | bfd *obfd = objfile->obfd; | |
14198 | unsigned int addr_size = cu_header->addr_size; | |
14199 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14200 | /* Base address selection entry. */ | |
2b24b6e4 | 14201 | gdb::optional<CORE_ADDR> base; |
43039443 | 14202 | unsigned int dummy; |
d521ce57 | 14203 | const gdb_byte *buffer; |
ff013f42 | 14204 | CORE_ADDR baseaddr; |
43039443 | 14205 | |
43988095 | 14206 | if (cu_header->version >= 5) |
d0ce17d8 | 14207 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14208 | |
d00adf39 | 14209 | base = cu->base_address; |
43039443 | 14210 | |
5e22e966 SM |
14211 | per_objfile->per_bfd->ranges.read (objfile); |
14212 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14213 | { |
b98664d3 | 14214 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14215 | offset); |
14216 | return 0; | |
14217 | } | |
5e22e966 | 14218 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14219 | |
b3b3bada | 14220 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14221 | |
43039443 JK |
14222 | while (1) |
14223 | { | |
14224 | CORE_ADDR range_beginning, range_end; | |
14225 | ||
c8a7a66f | 14226 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14227 | buffer += addr_size; |
c8a7a66f | 14228 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14229 | buffer += addr_size; |
14230 | offset += 2 * addr_size; | |
14231 | ||
14232 | /* An end of list marker is a pair of zero addresses. */ | |
14233 | if (range_beginning == 0 && range_end == 0) | |
14234 | /* Found the end of list entry. */ | |
14235 | break; | |
14236 | ||
14237 | /* Each base address selection entry is a pair of 2 values. | |
14238 | The first is the largest possible address, the second is | |
14239 | the base address. Check for a base address here. */ | |
14240 | if ((range_beginning & mask) == mask) | |
14241 | { | |
28d2bfb9 AB |
14242 | /* If we found the largest possible address, then we already |
14243 | have the base address in range_end. */ | |
14244 | base = range_end; | |
43039443 JK |
14245 | continue; |
14246 | } | |
14247 | ||
2b24b6e4 | 14248 | if (!base.has_value ()) |
43039443 JK |
14249 | { |
14250 | /* We have no valid base address for the ranges | |
14251 | data. */ | |
b98664d3 | 14252 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14253 | return 0; |
14254 | } | |
14255 | ||
9277c30c UW |
14256 | if (range_beginning > range_end) |
14257 | { | |
14258 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14259 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14260 | return 0; |
14261 | } | |
14262 | ||
14263 | /* Empty range entries have no effect. */ | |
14264 | if (range_beginning == range_end) | |
14265 | continue; | |
14266 | ||
2b24b6e4 TT |
14267 | range_beginning += *base; |
14268 | range_end += *base; | |
43039443 | 14269 | |
01093045 DE |
14270 | /* A not-uncommon case of bad debug info. |
14271 | Don't pollute the addrmap with bad data. */ | |
14272 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14273 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14274 | { |
b98664d3 | 14275 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14276 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14277 | continue; |
14278 | } | |
14279 | ||
5f46c5a5 JK |
14280 | callback (range_beginning, range_end); |
14281 | } | |
14282 | ||
14283 | return 1; | |
14284 | } | |
14285 | ||
14286 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14287 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
efd7398e | 14288 | If RANGES_PST is not NULL we should set up the `psymtabs_addrmap'. */ |
5f46c5a5 JK |
14289 | |
14290 | static int | |
14291 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14292 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14293 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14294 | { |
5e22e966 | 14295 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 14296 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 14297 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14298 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14299 | int low_set = 0; |
14300 | CORE_ADDR low = 0; | |
14301 | CORE_ADDR high = 0; | |
14302 | int retval; | |
14303 | ||
d0ce17d8 | 14304 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14305 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14306 | { | |
9277c30c | 14307 | if (ranges_pst != NULL) |
3e29f34a MR |
14308 | { |
14309 | CORE_ADDR lowpc; | |
14310 | CORE_ADDR highpc; | |
14311 | ||
79748972 TT |
14312 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14313 | range_beginning + baseaddr) | |
14314 | - baseaddr); | |
14315 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14316 | range_end + baseaddr) | |
14317 | - baseaddr); | |
84685904 | 14318 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 14319 | lowpc, highpc - 1, ranges_pst); |
3e29f34a | 14320 | } |
ff013f42 | 14321 | |
43039443 JK |
14322 | /* FIXME: This is recording everything as a low-high |
14323 | segment of consecutive addresses. We should have a | |
14324 | data structure for discontiguous block ranges | |
14325 | instead. */ | |
14326 | if (! low_set) | |
14327 | { | |
14328 | low = range_beginning; | |
14329 | high = range_end; | |
14330 | low_set = 1; | |
14331 | } | |
14332 | else | |
14333 | { | |
14334 | if (range_beginning < low) | |
14335 | low = range_beginning; | |
14336 | if (range_end > high) | |
14337 | high = range_end; | |
14338 | } | |
5f46c5a5 JK |
14339 | }); |
14340 | if (!retval) | |
14341 | return 0; | |
43039443 JK |
14342 | |
14343 | if (! low_set) | |
14344 | /* If the first entry is an end-of-list marker, the range | |
14345 | describes an empty scope, i.e. no instructions. */ | |
14346 | return 0; | |
14347 | ||
14348 | if (low_return) | |
14349 | *low_return = low; | |
14350 | if (high_return) | |
14351 | *high_return = high; | |
14352 | return 1; | |
14353 | } | |
14354 | ||
3a2b436a JK |
14355 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14356 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14357 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14358 | |
3a2b436a | 14359 | static enum pc_bounds_kind |
af34e669 | 14360 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14361 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14362 | dwarf2_psymtab *pst) |
c906108c | 14363 | { |
976ca316 | 14364 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14365 | struct attribute *attr; |
91da1414 | 14366 | struct attribute *attr_high; |
af34e669 DJ |
14367 | CORE_ADDR low = 0; |
14368 | CORE_ADDR high = 0; | |
e385593e | 14369 | enum pc_bounds_kind ret; |
c906108c | 14370 | |
91da1414 MW |
14371 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14372 | if (attr_high) | |
af34e669 | 14373 | { |
e142c38c | 14374 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14375 | if (attr != nullptr) |
dda83cd7 | 14376 | { |
95f982e5 TT |
14377 | low = attr->as_address (); |
14378 | high = attr_high->as_address (); | |
cd6c91b4 | 14379 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14380 | high += low; |
91da1414 | 14381 | } |
af34e669 DJ |
14382 | else |
14383 | /* Found high w/o low attribute. */ | |
e385593e | 14384 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14385 | |
14386 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14387 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14388 | } |
c906108c | 14389 | else |
af34e669 | 14390 | { |
e142c38c | 14391 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14392 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14393 | { |
2b0c7f41 SM |
14394 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14395 | on DWARF version). */ | |
14396 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14397 | ||
14398 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14399 | this value. */ | |
14400 | if (die->tag != DW_TAG_compile_unit) | |
14401 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14402 | |
af34e669 | 14403 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14404 | .debug_ranges section. */ |
d0ce17d8 CT |
14405 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14406 | die->tag)) | |
e385593e | 14407 | return PC_BOUNDS_INVALID; |
43039443 | 14408 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14409 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14410 | } |
e385593e JK |
14411 | else |
14412 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14413 | } |
c906108c | 14414 | |
48fbe735 | 14415 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14416 | if (high <= low) |
e385593e | 14417 | return PC_BOUNDS_INVALID; |
c906108c SS |
14418 | |
14419 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14420 | eliminate duplicate copies of functions and vtables and such. | |
14421 | The linker will arbitrarily choose one and discard the others. | |
14422 | The AT_*_pc values for such functions refer to local labels in | |
14423 | these sections. If the section from that file was discarded, the | |
14424 | labels are not in the output, so the relocs get a value of 0. | |
14425 | If this is a discarded function, mark the pc bounds as invalid, | |
14426 | so that GDB will ignore it. */ | |
976ca316 | 14427 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14428 | return PC_BOUNDS_INVALID; |
c906108c SS |
14429 | |
14430 | *lowpc = low; | |
96408a79 SA |
14431 | if (highpc) |
14432 | *highpc = high; | |
af34e669 | 14433 | return ret; |
c906108c SS |
14434 | } |
14435 | ||
b084d499 JB |
14436 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14437 | its low and high PC addresses. Do nothing if these addresses could not | |
14438 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14439 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14440 | ||
14441 | static void | |
14442 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14443 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14444 | struct dwarf2_cu *cu) | |
b084d499 JB |
14445 | { |
14446 | CORE_ADDR low, high; | |
14447 | struct die_info *child = die->child; | |
14448 | ||
e385593e | 14449 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14450 | { |
325fac50 PA |
14451 | *lowpc = std::min (*lowpc, low); |
14452 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14453 | } |
14454 | ||
14455 | /* If the language does not allow nested subprograms (either inside | |
14456 | subprograms or lexical blocks), we're done. */ | |
14457 | if (cu->language != language_ada) | |
14458 | return; | |
6e70227d | 14459 | |
b084d499 JB |
14460 | /* Check all the children of the given DIE. If it contains nested |
14461 | subprograms, then check their pc bounds. Likewise, we need to | |
14462 | check lexical blocks as well, as they may also contain subprogram | |
14463 | definitions. */ | |
14464 | while (child && child->tag) | |
14465 | { | |
14466 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14467 | || child->tag == DW_TAG_lexical_block) |
14468 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14469 | child = child->sibling; |
b084d499 JB |
14470 | } |
14471 | } | |
14472 | ||
fae299cd DC |
14473 | /* Get the low and high pc's represented by the scope DIE, and store |
14474 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14475 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14476 | ||
14477 | static void | |
14478 | get_scope_pc_bounds (struct die_info *die, | |
14479 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14480 | struct dwarf2_cu *cu) | |
14481 | { | |
14482 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14483 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14484 | CORE_ADDR current_low, current_high; | |
14485 | ||
3a2b436a | 14486 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14487 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14488 | { |
14489 | best_low = current_low; | |
14490 | best_high = current_high; | |
14491 | } | |
14492 | else | |
14493 | { | |
14494 | struct die_info *child = die->child; | |
14495 | ||
14496 | while (child && child->tag) | |
14497 | { | |
14498 | switch (child->tag) { | |
14499 | case DW_TAG_subprogram: | |
dda83cd7 | 14500 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14501 | break; |
14502 | case DW_TAG_namespace: | |
f55ee35c | 14503 | case DW_TAG_module: |
fae299cd DC |
14504 | /* FIXME: carlton/2004-01-16: Should we do this for |
14505 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14506 | that current GCC's always emit the DIEs corresponding | |
14507 | to definitions of methods of classes as children of a | |
14508 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14509 | the DIEs giving the declarations, which could be | |
14510 | anywhere). But I don't see any reason why the | |
14511 | standards says that they have to be there. */ | |
14512 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14513 | ||
14514 | if (current_low != ((CORE_ADDR) -1)) | |
14515 | { | |
325fac50 PA |
14516 | best_low = std::min (best_low, current_low); |
14517 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14518 | } |
14519 | break; | |
14520 | default: | |
0963b4bd | 14521 | /* Ignore. */ |
fae299cd DC |
14522 | break; |
14523 | } | |
14524 | ||
436c571c | 14525 | child = child->sibling; |
fae299cd DC |
14526 | } |
14527 | } | |
14528 | ||
14529 | *lowpc = best_low; | |
14530 | *highpc = best_high; | |
14531 | } | |
14532 | ||
801e3a5b JB |
14533 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14534 | in DIE. */ | |
380bca97 | 14535 | |
801e3a5b JB |
14536 | static void |
14537 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14538 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14539 | { |
5e22e966 | 14540 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14541 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14542 | struct attribute *attr; |
91da1414 | 14543 | struct attribute *attr_high; |
801e3a5b | 14544 | |
91da1414 MW |
14545 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14546 | if (attr_high) | |
801e3a5b | 14547 | { |
801e3a5b | 14548 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14549 | if (attr != nullptr) |
dda83cd7 | 14550 | { |
95f982e5 TT |
14551 | CORE_ADDR low = attr->as_address (); |
14552 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14553 | |
cd6c91b4 | 14554 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14555 | high += low; |
9a619af0 | 14556 | |
3e29f34a MR |
14557 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14558 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14559 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14560 | } |
801e3a5b JB |
14561 | } |
14562 | ||
14563 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14564 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14565 | { |
2b0c7f41 SM |
14566 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14567 | on DWARF version). */ | |
14568 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14569 | |
2b0c7f41 SM |
14570 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14571 | this value. */ | |
14572 | if (die->tag != DW_TAG_compile_unit) | |
14573 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14574 | |
2d5f09ec | 14575 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14576 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14577 | [&] (CORE_ADDR start, CORE_ADDR end) |
14578 | { | |
58fdfd2c JK |
14579 | start += baseaddr; |
14580 | end += baseaddr; | |
5f46c5a5 JK |
14581 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14582 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14583 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14584 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14585 | }); |
2d5f09ec KB |
14586 | |
14587 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14588 | } |
14589 | } | |
14590 | ||
685b1105 JK |
14591 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14592 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14593 | |
685b1105 JK |
14594 | static void |
14595 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14596 | { |
38360086 | 14597 | int major, minor; |
60d5a603 JK |
14598 | |
14599 | if (cu->producer == NULL) | |
14600 | { | |
14601 | /* For unknown compilers expect their behavior is DWARF version | |
14602 | compliant. | |
14603 | ||
14604 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14605 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14606 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14607 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14608 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14609 | } |
b1ffba5a | 14610 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14611 | { |
38360086 MW |
14612 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14613 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14614 | } |
5230b05a | 14615 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14616 | { |
14617 | cu->producer_is_icc = true; | |
14618 | cu->producer_is_icc_lt_14 = major < 14; | |
14619 | } | |
c258c396 JD |
14620 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14621 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14622 | else |
14623 | { | |
14624 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14625 | compliant. */ | |
60d5a603 JK |
14626 | } |
14627 | ||
9068261f | 14628 | cu->checked_producer = true; |
685b1105 | 14629 | } |
ba919b58 | 14630 | |
685b1105 JK |
14631 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14632 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14633 | during 4.6.0 experimental. */ | |
14634 | ||
9068261f | 14635 | static bool |
685b1105 JK |
14636 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14637 | { | |
14638 | if (!cu->checked_producer) | |
14639 | check_producer (cu); | |
14640 | ||
14641 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14642 | } |
14643 | ||
c258c396 JD |
14644 | |
14645 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14646 | with incorrect is_stmt attributes. */ | |
14647 | ||
14648 | static bool | |
14649 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14650 | { | |
14651 | if (!cu->checked_producer) | |
14652 | check_producer (cu); | |
14653 | ||
14654 | return cu->producer_is_codewarrior; | |
14655 | } | |
14656 | ||
bf23a268 TT |
14657 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14658 | If that attribute is not available, return the appropriate | |
14659 | default. */ | |
60d5a603 JK |
14660 | |
14661 | static enum dwarf_access_attribute | |
bf23a268 | 14662 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14663 | { |
bf23a268 TT |
14664 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14665 | if (attr != nullptr) | |
14666 | { | |
14667 | LONGEST value = attr->constant_value (-1); | |
14668 | if (value == DW_ACCESS_public | |
14669 | || value == DW_ACCESS_protected | |
14670 | || value == DW_ACCESS_private) | |
14671 | return (dwarf_access_attribute) value; | |
14672 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14673 | plongest (value)); | |
14674 | } | |
14675 | ||
60d5a603 JK |
14676 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14677 | { | |
14678 | /* The default DWARF 2 accessibility for members is public, the default | |
14679 | accessibility for inheritance is private. */ | |
14680 | ||
14681 | if (die->tag != DW_TAG_inheritance) | |
14682 | return DW_ACCESS_public; | |
14683 | else | |
14684 | return DW_ACCESS_private; | |
14685 | } | |
14686 | else | |
14687 | { | |
14688 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14689 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14690 | depends on the container kind. */ | |
14691 | ||
14692 | if (die->parent->tag == DW_TAG_class_type) | |
14693 | return DW_ACCESS_private; | |
14694 | else | |
14695 | return DW_ACCESS_public; | |
14696 | } | |
14697 | } | |
14698 | ||
74ac6d43 TT |
14699 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14700 | offset. If the attribute was not found return 0, otherwise return | |
14701 | 1. If it was found but could not properly be handled, set *OFFSET | |
14702 | to 0. */ | |
14703 | ||
14704 | static int | |
14705 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14706 | LONGEST *offset) | |
14707 | { | |
14708 | struct attribute *attr; | |
14709 | ||
14710 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14711 | if (attr != NULL) | |
14712 | { | |
14713 | *offset = 0; | |
14714 | ||
14715 | /* Note that we do not check for a section offset first here. | |
14716 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14717 | so if we see it, we can assume that a constant form is really | |
14718 | a constant and not a section offset. */ | |
cd6c91b4 | 14719 | if (attr->form_is_constant ()) |
0826b30a | 14720 | *offset = attr->constant_value (0); |
cd6c91b4 | 14721 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14722 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14723 | else if (attr->form_is_block ()) |
9d2246fc | 14724 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14725 | else |
14726 | dwarf2_complex_location_expr_complaint (); | |
14727 | ||
14728 | return 1; | |
14729 | } | |
14730 | ||
14731 | return 0; | |
14732 | } | |
14733 | ||
7d79de9a TT |
14734 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14735 | ||
14736 | static void | |
14737 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14738 | struct field *field) | |
14739 | { | |
14740 | struct attribute *attr; | |
14741 | ||
14742 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14743 | if (attr != NULL) | |
14744 | { | |
14745 | if (attr->form_is_constant ()) | |
14746 | { | |
14747 | LONGEST offset = attr->constant_value (0); | |
14748 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14749 | } | |
14750 | else if (attr->form_is_section_offset ()) | |
14751 | dwarf2_complex_location_expr_complaint (); | |
14752 | else if (attr->form_is_block ()) | |
14753 | { | |
14754 | bool handled; | |
9d2246fc | 14755 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14756 | if (handled) |
14757 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14758 | else | |
14759 | { | |
5e22e966 SM |
14760 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14761 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14762 | struct dwarf2_locexpr_baton *dlbaton |
14763 | = XOBNEW (&objfile->objfile_obstack, | |
14764 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14765 | dlbaton->data = attr->as_block ()->data; |
14766 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14767 | /* When using this baton, we want to compute the address |
14768 | of the field, not the value. This is why | |
14769 | is_reference is set to false here. */ | |
14770 | dlbaton->is_reference = false; | |
5e22e966 | 14771 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14772 | dlbaton->per_cu = cu->per_cu; |
14773 | ||
14774 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14775 | } | |
14776 | } | |
14777 | else | |
14778 | dwarf2_complex_location_expr_complaint (); | |
14779 | } | |
14780 | } | |
14781 | ||
c906108c SS |
14782 | /* Add an aggregate field to the field list. */ |
14783 | ||
14784 | static void | |
107d2387 | 14785 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14786 | struct dwarf2_cu *cu) |
6e70227d | 14787 | { |
5e22e966 | 14788 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14789 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14790 | struct nextfield *new_field; |
14791 | struct attribute *attr; | |
14792 | struct field *fp; | |
15d034d0 | 14793 | const char *fieldname = ""; |
c906108c | 14794 | |
7d0ccb61 DJ |
14795 | if (die->tag == DW_TAG_inheritance) |
14796 | { | |
be2daae6 TT |
14797 | fip->baseclasses.emplace_back (); |
14798 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14799 | } |
14800 | else | |
14801 | { | |
be2daae6 TT |
14802 | fip->fields.emplace_back (); |
14803 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14804 | } |
be2daae6 | 14805 | |
9c6a1327 TT |
14806 | new_field->offset = die->sect_off; |
14807 | ||
bf23a268 | 14808 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 14809 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 14810 | fip->non_public_fields = true; |
60d5a603 | 14811 | |
e142c38c | 14812 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14813 | if (attr != nullptr) |
23dca5c3 | 14814 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
14815 | else |
14816 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14817 | |
14818 | fp = &new_field->field; | |
a9a9bd0f | 14819 | |
e142c38c | 14820 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14821 | { |
a9a9bd0f | 14822 | /* Data member other than a C++ static data member. */ |
6e70227d | 14823 | |
c906108c | 14824 | /* Get type of field. */ |
5d14b6e5 | 14825 | fp->set_type (die_type (die, cu)); |
c906108c | 14826 | |
d6a843b5 | 14827 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14828 | |
c906108c | 14829 | /* Get bit size of field (zero if none). */ |
e142c38c | 14830 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14831 | if (attr != nullptr) |
c906108c | 14832 | { |
529908cb | 14833 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
14834 | } |
14835 | else | |
14836 | { | |
14837 | FIELD_BITSIZE (*fp) = 0; | |
14838 | } | |
14839 | ||
14840 | /* Get bit offset of field. */ | |
7d79de9a | 14841 | handle_data_member_location (die, cu, fp); |
e142c38c | 14842 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 14843 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 14844 | { |
d5a22e77 | 14845 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14846 | { |
14847 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
14848 | additional bit offset from the MSB of the containing |
14849 | anonymous object to the MSB of the field. We don't | |
14850 | have to do anything special since we don't need to | |
14851 | know the size of the anonymous object. */ | |
529908cb | 14852 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 14853 | + attr->constant_value (0))); |
c906108c SS |
14854 | } |
14855 | else | |
14856 | { | |
14857 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
14858 | MSB of the anonymous object, subtract off the number of |
14859 | bits from the MSB of the field to the MSB of the | |
14860 | object, and then subtract off the number of bits of | |
14861 | the field itself. The result is the bit offset of | |
14862 | the LSB of the field. */ | |
c906108c | 14863 | int anonymous_size; |
7c184d33 | 14864 | int bit_offset = attr->constant_value (0); |
c906108c | 14865 | |
e142c38c | 14866 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 14867 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
14868 | { |
14869 | /* The size of the anonymous object containing | |
14870 | the bit field is explicit, so use the | |
14871 | indicated size (in bytes). */ | |
7c184d33 | 14872 | anonymous_size = attr->constant_value (0); |
c906108c SS |
14873 | } |
14874 | else | |
14875 | { | |
14876 | /* The size of the anonymous object containing | |
14877 | the bit field must be inferred from the type | |
14878 | attribute of the data member containing the | |
14879 | bit field. */ | |
5d14b6e5 | 14880 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 14881 | } |
f41f5e61 PA |
14882 | SET_FIELD_BITPOS (*fp, |
14883 | (FIELD_BITPOS (*fp) | |
14884 | + anonymous_size * bits_per_byte | |
14885 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14886 | } |
14887 | } | |
da5b30da AA |
14888 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14889 | if (attr != NULL) | |
14890 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14891 | + attr->constant_value (0))); |
c906108c SS |
14892 | |
14893 | /* Get name of field. */ | |
39cbfefa DJ |
14894 | fieldname = dwarf2_name (die, cu); |
14895 | if (fieldname == NULL) | |
14896 | fieldname = ""; | |
d8151005 DJ |
14897 | |
14898 | /* The name is already allocated along with this objfile, so we don't | |
14899 | need to duplicate it for the type. */ | |
14900 | fp->name = fieldname; | |
c906108c SS |
14901 | |
14902 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 14903 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14904 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14905 | { |
d48cc9dd | 14906 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 14907 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 14908 | fip->non_public_fields = true; |
c906108c SS |
14909 | } |
14910 | } | |
a9a9bd0f | 14911 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14912 | { |
a9a9bd0f DC |
14913 | /* C++ static member. */ |
14914 | ||
14915 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14916 | is a declaration, but all versions of G++ as of this writing | |
14917 | (so through at least 3.2.1) incorrectly generate | |
14918 | DW_TAG_variable tags. */ | |
6e70227d | 14919 | |
ff355380 | 14920 | const char *physname; |
c906108c | 14921 | |
a9a9bd0f | 14922 | /* Get name of field. */ |
39cbfefa DJ |
14923 | fieldname = dwarf2_name (die, cu); |
14924 | if (fieldname == NULL) | |
c906108c SS |
14925 | return; |
14926 | ||
254e6b9e | 14927 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14928 | if (attr |
14929 | /* Only create a symbol if this is an external value. | |
14930 | new_symbol checks this and puts the value in the global symbol | |
14931 | table, which we want. If it is not external, new_symbol | |
14932 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14933 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14934 | { |
14935 | /* A static const member, not much different than an enum as far as | |
14936 | we're concerned, except that we can support more types. */ | |
14937 | new_symbol (die, NULL, cu); | |
14938 | } | |
14939 | ||
2df3850c | 14940 | /* Get physical name. */ |
ff355380 | 14941 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14942 | |
d8151005 DJ |
14943 | /* The name is already allocated along with this objfile, so we don't |
14944 | need to duplicate it for the type. */ | |
14945 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 14946 | fp->set_type (die_type (die, cu)); |
d8151005 | 14947 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14948 | } |
14949 | else if (die->tag == DW_TAG_inheritance) | |
14950 | { | |
74ac6d43 | 14951 | /* C++ base class field. */ |
7d79de9a | 14952 | handle_data_member_location (die, cu, fp); |
c906108c | 14953 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
14954 | fp->set_type (die_type (die, cu)); |
14955 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 14956 | } |
2ddeaf8a TT |
14957 | else |
14958 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14959 | } |
14960 | ||
883fd55a KS |
14961 | /* Can the type given by DIE define another type? */ |
14962 | ||
14963 | static bool | |
14964 | type_can_define_types (const struct die_info *die) | |
14965 | { | |
14966 | switch (die->tag) | |
14967 | { | |
14968 | case DW_TAG_typedef: | |
14969 | case DW_TAG_class_type: | |
14970 | case DW_TAG_structure_type: | |
14971 | case DW_TAG_union_type: | |
14972 | case DW_TAG_enumeration_type: | |
14973 | return true; | |
14974 | ||
14975 | default: | |
14976 | return false; | |
14977 | } | |
14978 | } | |
14979 | ||
14980 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14981 | |
14982 | static void | |
883fd55a KS |
14983 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14984 | struct dwarf2_cu *cu) | |
6e70227d | 14985 | { |
be2daae6 TT |
14986 | struct decl_field fp; |
14987 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14988 | |
883fd55a | 14989 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14990 | |
883fd55a | 14991 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14992 | fp.name = dwarf2_name (die, cu); |
14993 | fp.type = read_type_die (die, cu); | |
98751a41 | 14994 | |
c191a687 | 14995 | /* Save accessibility. */ |
bf23a268 | 14996 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
14997 | switch (accessibility) |
14998 | { | |
14999 | case DW_ACCESS_public: | |
15000 | /* The assumed value if neither private nor protected. */ | |
15001 | break; | |
15002 | case DW_ACCESS_private: | |
be2daae6 | 15003 | fp.is_private = 1; |
c191a687 KS |
15004 | break; |
15005 | case DW_ACCESS_protected: | |
be2daae6 | 15006 | fp.is_protected = 1; |
c191a687 | 15007 | break; |
c191a687 KS |
15008 | } |
15009 | ||
883fd55a | 15010 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15011 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15012 | else |
be2daae6 | 15013 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15014 | } |
15015 | ||
9c6a1327 TT |
15016 | /* A convenience typedef that's used when finding the discriminant |
15017 | field for a variant part. */ | |
1b95cdb7 SM |
15018 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15019 | offset_map_type; | |
9c6a1327 TT |
15020 | |
15021 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15022 | where the results will be stored. VARIANT is the variant to | |
15023 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15024 | or unsigned. */ | |
15025 | ||
15026 | static const gdb::array_view<discriminant_range> | |
15027 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15028 | bool is_unsigned) | |
15029 | { | |
15030 | std::vector<discriminant_range> ranges; | |
15031 | ||
15032 | if (variant.default_branch) | |
15033 | return {}; | |
15034 | ||
15035 | if (variant.discr_list_data == nullptr) | |
15036 | { | |
15037 | discriminant_range r | |
15038 | = {variant.discriminant_value, variant.discriminant_value}; | |
15039 | ranges.push_back (r); | |
15040 | } | |
15041 | else | |
15042 | { | |
15043 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15044 | variant.discr_list_data->size); | |
15045 | while (!data.empty ()) | |
15046 | { | |
15047 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15048 | { | |
15049 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15050 | break; | |
15051 | } | |
15052 | bool is_range = data[0] == DW_DSC_range; | |
15053 | data = data.slice (1); | |
15054 | ||
15055 | ULONGEST low, high; | |
15056 | unsigned int bytes_read; | |
15057 | ||
15058 | if (data.empty ()) | |
15059 | { | |
15060 | complaint (_("DW_AT_discr_list missing low value")); | |
15061 | break; | |
15062 | } | |
15063 | if (is_unsigned) | |
15064 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15065 | else | |
15066 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15067 | &bytes_read); | |
15068 | data = data.slice (bytes_read); | |
15069 | ||
15070 | if (is_range) | |
15071 | { | |
15072 | if (data.empty ()) | |
15073 | { | |
15074 | complaint (_("DW_AT_discr_list missing high value")); | |
15075 | break; | |
15076 | } | |
15077 | if (is_unsigned) | |
15078 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15079 | &bytes_read); | |
15080 | else | |
15081 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15082 | &bytes_read); | |
15083 | data = data.slice (bytes_read); | |
15084 | } | |
15085 | else | |
15086 | high = low; | |
15087 | ||
15088 | ranges.push_back ({ low, high }); | |
15089 | } | |
15090 | } | |
15091 | ||
15092 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15093 | ranges.size ()); | |
15094 | std::copy (ranges.begin (), ranges.end (), result); | |
15095 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15096 | } | |
15097 | ||
15098 | static const gdb::array_view<variant_part> create_variant_parts | |
15099 | (struct obstack *obstack, | |
15100 | const offset_map_type &offset_map, | |
15101 | struct field_info *fi, | |
15102 | const std::vector<variant_part_builder> &variant_parts); | |
15103 | ||
15104 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15105 | the variant to fill in. OBSTACK is where any needed allocations | |
15106 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15107 | fields for the type. FI describes the fields of the type we're | |
15108 | processing. FIELD is the variant field we're converting. */ | |
15109 | ||
15110 | static void | |
15111 | create_one_variant (variant &result, struct obstack *obstack, | |
15112 | const offset_map_type &offset_map, | |
15113 | struct field_info *fi, const variant_field &field) | |
15114 | { | |
15115 | result.discriminants = convert_variant_range (obstack, field, false); | |
15116 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15117 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15118 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15119 | field.variant_parts); | |
15120 | } | |
15121 | ||
15122 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15123 | is the variant part to fill in. OBSTACK is where any needed | |
15124 | allocations will be done. OFFSET_MAP holds the mapping from | |
15125 | section offsets to fields for the type. FI describes the fields of | |
15126 | the type we're processing. BUILDER is the variant part to be | |
15127 | converted. */ | |
15128 | ||
15129 | static void | |
15130 | create_one_variant_part (variant_part &result, | |
15131 | struct obstack *obstack, | |
15132 | const offset_map_type &offset_map, | |
15133 | struct field_info *fi, | |
15134 | const variant_part_builder &builder) | |
15135 | { | |
15136 | auto iter = offset_map.find (builder.discriminant_offset); | |
15137 | if (iter == offset_map.end ()) | |
15138 | { | |
15139 | result.discriminant_index = -1; | |
15140 | /* Doesn't matter. */ | |
15141 | result.is_unsigned = false; | |
15142 | } | |
15143 | else | |
15144 | { | |
15145 | result.discriminant_index = iter->second; | |
15146 | result.is_unsigned | |
c6d940a9 | 15147 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15148 | } |
15149 | ||
15150 | size_t n = builder.variants.size (); | |
15151 | variant *output = new (obstack) variant[n]; | |
15152 | for (size_t i = 0; i < n; ++i) | |
15153 | create_one_variant (output[i], obstack, offset_map, fi, | |
15154 | builder.variants[i]); | |
15155 | ||
15156 | result.variants = gdb::array_view<variant> (output, n); | |
15157 | } | |
15158 | ||
15159 | /* Create a vector of variant parts that can be attached to a type. | |
15160 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15161 | holds the mapping from section offsets to fields for the type. FI | |
15162 | describes the fields of the type we're processing. VARIANT_PARTS | |
15163 | is the vector to convert. */ | |
15164 | ||
15165 | static const gdb::array_view<variant_part> | |
15166 | create_variant_parts (struct obstack *obstack, | |
15167 | const offset_map_type &offset_map, | |
15168 | struct field_info *fi, | |
15169 | const std::vector<variant_part_builder> &variant_parts) | |
15170 | { | |
15171 | if (variant_parts.empty ()) | |
15172 | return {}; | |
15173 | ||
15174 | size_t n = variant_parts.size (); | |
15175 | variant_part *result = new (obstack) variant_part[n]; | |
15176 | for (size_t i = 0; i < n; ++i) | |
15177 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15178 | variant_parts[i]); | |
15179 | ||
15180 | return gdb::array_view<variant_part> (result, n); | |
15181 | } | |
15182 | ||
15183 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15184 | done. */ | |
15185 | ||
15186 | static void | |
15187 | add_variant_property (struct field_info *fip, struct type *type, | |
15188 | struct dwarf2_cu *cu) | |
15189 | { | |
15190 | /* Map section offsets of fields to their field index. Note the | |
15191 | field index here does not take the number of baseclasses into | |
15192 | account. */ | |
15193 | offset_map_type offset_map; | |
15194 | for (int i = 0; i < fip->fields.size (); ++i) | |
15195 | offset_map[fip->fields[i].offset] = i; | |
15196 | ||
5e22e966 | 15197 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15198 | gdb::array_view<variant_part> parts |
15199 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15200 | fip->variant_parts); | |
15201 | ||
15202 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15203 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15204 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15205 | sizeof (parts))); | |
9c6a1327 | 15206 | |
5c54719c | 15207 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15208 | } |
15209 | ||
c906108c SS |
15210 | /* Create the vector of fields, and attach it to the type. */ |
15211 | ||
15212 | static void | |
fba45db2 | 15213 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15214 | struct dwarf2_cu *cu) |
c906108c | 15215 | { |
317f7127 | 15216 | int nfields = fip->nfields (); |
c906108c SS |
15217 | |
15218 | /* Record the field count, allocate space for the array of fields, | |
15219 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15220 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15221 | type->set_fields |
15222 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15223 | |
b4ba55a1 | 15224 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15225 | { |
15226 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15227 | ||
15228 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15229 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15230 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15231 | ||
15232 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15233 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15234 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15235 | ||
774b6a14 TT |
15236 | TYPE_FIELD_IGNORE_BITS (type) = |
15237 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15238 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15239 | } |
15240 | ||
15241 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15242 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15243 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15244 | { |
be2daae6 | 15245 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15246 | unsigned char *pointer; |
c906108c SS |
15247 | |
15248 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15249 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15250 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15251 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15252 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15253 | } |
15254 | ||
9c6a1327 TT |
15255 | if (!fip->variant_parts.empty ()) |
15256 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15257 | |
be2daae6 TT |
15258 | /* Copy the saved-up fields into the field vector. */ |
15259 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15260 | { |
be2daae6 TT |
15261 | struct nextfield &field |
15262 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15263 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15264 | |
ceacbf6e | 15265 | type->field (i) = field.field; |
be2daae6 | 15266 | switch (field.accessibility) |
c906108c | 15267 | { |
c5aa993b | 15268 | case DW_ACCESS_private: |
b4ba55a1 | 15269 | if (cu->language != language_ada) |
be2daae6 | 15270 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15271 | break; |
c906108c | 15272 | |
c5aa993b | 15273 | case DW_ACCESS_protected: |
b4ba55a1 | 15274 | if (cu->language != language_ada) |
be2daae6 | 15275 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15276 | break; |
c906108c | 15277 | |
c5aa993b JM |
15278 | case DW_ACCESS_public: |
15279 | break; | |
c906108c | 15280 | |
c5aa993b JM |
15281 | default: |
15282 | /* Unknown accessibility. Complain and treat it as public. */ | |
15283 | { | |
b98664d3 | 15284 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15285 | field.accessibility); |
c5aa993b JM |
15286 | } |
15287 | break; | |
c906108c | 15288 | } |
be2daae6 | 15289 | if (i < fip->baseclasses.size ()) |
c906108c | 15290 | { |
be2daae6 | 15291 | switch (field.virtuality) |
c906108c | 15292 | { |
c5aa993b JM |
15293 | case DW_VIRTUALITY_virtual: |
15294 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15295 | if (cu->language == language_ada) |
a73c6dcd | 15296 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15297 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15298 | break; |
c906108c SS |
15299 | } |
15300 | } | |
c906108c SS |
15301 | } |
15302 | } | |
15303 | ||
7d27a96d TT |
15304 | /* Return true if this member function is a constructor, false |
15305 | otherwise. */ | |
15306 | ||
15307 | static int | |
15308 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15309 | { | |
15310 | const char *fieldname; | |
fe978cb0 | 15311 | const char *type_name; |
7d27a96d TT |
15312 | int len; |
15313 | ||
15314 | if (die->parent == NULL) | |
15315 | return 0; | |
15316 | ||
15317 | if (die->parent->tag != DW_TAG_structure_type | |
15318 | && die->parent->tag != DW_TAG_union_type | |
15319 | && die->parent->tag != DW_TAG_class_type) | |
15320 | return 0; | |
15321 | ||
15322 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15323 | type_name = dwarf2_name (die->parent, cu); |
15324 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15325 | return 0; |
15326 | ||
15327 | len = strlen (fieldname); | |
fe978cb0 PA |
15328 | return (strncmp (fieldname, type_name, len) == 0 |
15329 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15330 | } |
15331 | ||
c906108c SS |
15332 | /* Add a member function to the proper fieldlist. */ |
15333 | ||
15334 | static void | |
107d2387 | 15335 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15336 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15337 | { |
5e22e966 | 15338 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15339 | struct attribute *attr; |
c906108c | 15340 | int i; |
be2daae6 | 15341 | struct fnfieldlist *flp = nullptr; |
c906108c | 15342 | struct fn_field *fnp; |
15d034d0 | 15343 | const char *fieldname; |
f792889a | 15344 | struct type *this_type; |
c906108c | 15345 | |
b4ba55a1 | 15346 | if (cu->language == language_ada) |
a73c6dcd | 15347 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15348 | |
2df3850c | 15349 | /* Get name of member function. */ |
39cbfefa DJ |
15350 | fieldname = dwarf2_name (die, cu); |
15351 | if (fieldname == NULL) | |
2df3850c | 15352 | return; |
c906108c | 15353 | |
c906108c | 15354 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15355 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15356 | { |
27bfe10e | 15357 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15358 | { |
15359 | flp = &fip->fnfieldlists[i]; | |
15360 | break; | |
15361 | } | |
c906108c SS |
15362 | } |
15363 | ||
be2daae6 TT |
15364 | /* Create a new fnfieldlist if necessary. */ |
15365 | if (flp == nullptr) | |
c906108c | 15366 | { |
be2daae6 TT |
15367 | fip->fnfieldlists.emplace_back (); |
15368 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15369 | flp->name = fieldname; |
be2daae6 | 15370 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15371 | } |
15372 | ||
be2daae6 TT |
15373 | /* Create a new member function field and add it to the vector of |
15374 | fnfieldlists. */ | |
15375 | flp->fnfields.emplace_back (); | |
15376 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15377 | |
15378 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15379 | if (cu->language == language_cplus) |
be2daae6 TT |
15380 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15381 | die, cu); | |
3da10d80 KS |
15382 | else |
15383 | { | |
1d06ead6 | 15384 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15385 | fnp->physname = physname ? physname : ""; |
15386 | } | |
15387 | ||
c906108c | 15388 | fnp->type = alloc_type (objfile); |
f792889a | 15389 | this_type = read_type_die (die, cu); |
78134374 | 15390 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15391 | { |
1f704f76 | 15392 | int nparams = this_type->num_fields (); |
c906108c | 15393 | |
f792889a | 15394 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15395 | of the method itself (TYPE_CODE_METHOD). */ |
15396 | smash_to_method_type (fnp->type, type, | |
f792889a | 15397 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15398 | this_type->fields (), |
1f704f76 | 15399 | this_type->num_fields (), |
a409645d | 15400 | this_type->has_varargs ()); |
c906108c SS |
15401 | |
15402 | /* Handle static member functions. | |
dda83cd7 SM |
15403 | Dwarf2 has no clean way to discern C++ static and non-static |
15404 | member functions. G++ helps GDB by marking the first | |
15405 | parameter for non-static member functions (which is the this | |
15406 | pointer) as artificial. We obtain this information from | |
15407 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15408 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15409 | fnp->voffset = VOFFSET_STATIC; |
15410 | } | |
15411 | else | |
b98664d3 | 15412 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15413 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15414 | |
15415 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15416 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15417 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15418 | |
3e43a32a MS |
15419 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15420 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15421 | |
15422 | /* Get accessibility. */ | |
bf23a268 | 15423 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15424 | switch (accessibility) |
c906108c | 15425 | { |
60d5a603 JK |
15426 | case DW_ACCESS_private: |
15427 | fnp->is_private = 1; | |
15428 | break; | |
15429 | case DW_ACCESS_protected: | |
15430 | fnp->is_protected = 1; | |
15431 | break; | |
c906108c SS |
15432 | } |
15433 | ||
b02dede2 | 15434 | /* Check for artificial methods. */ |
e142c38c | 15435 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15436 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15437 | fnp->is_artificial = 1; |
15438 | ||
e35000a7 TBA |
15439 | /* Check for defaulted methods. */ |
15440 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15441 | if (attr != nullptr) |
15442 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15443 | |
15444 | /* Check for deleted methods. */ | |
15445 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15446 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15447 | fnp->is_deleted = 1; |
15448 | ||
7d27a96d TT |
15449 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15450 | ||
0d564a31 | 15451 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15452 | function. For older versions of GCC, this is an offset in the |
15453 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15454 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15455 | to the object address. */ |
15456 | ||
e142c38c | 15457 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15458 | if (attr != nullptr) |
8e19ed76 | 15459 | { |
9d2246fc | 15460 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15461 | { |
9d2246fc TT |
15462 | struct dwarf_block *block = attr->as_block (); |
15463 | ||
15464 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15465 | { |
15466 | /* Old-style GCC. */ | |
9d2246fc | 15467 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15468 | } |
9d2246fc TT |
15469 | else if (block->data[0] == DW_OP_deref |
15470 | || (block->size > 1 | |
15471 | && block->data[0] == DW_OP_deref_size | |
15472 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15473 | { |
9d2246fc | 15474 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15475 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15476 | dwarf2_complex_location_expr_complaint (); | |
15477 | else | |
15478 | fnp->voffset /= cu->header.addr_size; | |
15479 | fnp->voffset += 2; | |
15480 | } | |
15481 | else | |
15482 | dwarf2_complex_location_expr_complaint (); | |
15483 | ||
15484 | if (!fnp->fcontext) | |
7e993ebf KS |
15485 | { |
15486 | /* If there is no `this' field and no DW_AT_containing_type, | |
15487 | we cannot actually find a base class context for the | |
15488 | vtable! */ | |
1f704f76 | 15489 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15490 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15491 | { | |
b98664d3 | 15492 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15493 | "function \"%s\" (offset %s)"), |
15494 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15495 | } |
15496 | else | |
15497 | { | |
15498 | fnp->fcontext | |
940da03e | 15499 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15500 | } |
15501 | } | |
aec5aa8b | 15502 | } |
cd6c91b4 | 15503 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15504 | { |
4d3c2250 | 15505 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15506 | } |
8e19ed76 | 15507 | else |
dda83cd7 | 15508 | { |
4d3c2250 KB |
15509 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15510 | fieldname); | |
dda83cd7 | 15511 | } |
0d564a31 | 15512 | } |
d48cc9dd DJ |
15513 | else |
15514 | { | |
15515 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15516 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15517 | { |
15518 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15519 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15520 | "but the vtable offset is not specified"), |
9d8780f0 | 15521 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15522 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15523 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15524 | } | |
15525 | } | |
c906108c SS |
15526 | } |
15527 | ||
15528 | /* Create the vector of member function fields, and attach it to the type. */ | |
15529 | ||
15530 | static void | |
fba45db2 | 15531 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15532 | struct dwarf2_cu *cu) |
c906108c | 15533 | { |
b4ba55a1 | 15534 | if (cu->language == language_ada) |
a73c6dcd | 15535 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15536 | |
c906108c SS |
15537 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15538 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15539 | TYPE_ALLOC (type, |
15540 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15541 | |
be2daae6 | 15542 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15543 | { |
be2daae6 | 15544 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15545 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15546 | |
be2daae6 TT |
15547 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15548 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15549 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15550 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15551 | ||
15552 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15553 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15554 | } |
15555 | ||
be2daae6 | 15556 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15557 | } |
15558 | ||
1168df01 JB |
15559 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15560 | language, zero otherwise. */ | |
15561 | static int | |
15562 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15563 | { | |
15564 | static const char vptr[] = "_vptr"; | |
15565 | ||
9c37b5ae TT |
15566 | /* Look for the C++ form of the vtable. */ |
15567 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15568 | return 1; |
15569 | ||
15570 | return 0; | |
15571 | } | |
15572 | ||
c0dd20ea | 15573 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15574 | functions, with the ABI-specified layout. If TYPE describes |
15575 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15576 | |
15577 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15578 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15579 | |
0b92b5bb TT |
15580 | static void |
15581 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15582 | { |
09e2d7c7 | 15583 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15584 | |
15585 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15586 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15587 | return; |
c0dd20ea DJ |
15588 | |
15589 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15590 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15591 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15592 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15593 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15594 | return; | |
c0dd20ea DJ |
15595 | |
15596 | /* Find the type of the method. */ | |
940da03e | 15597 | pfn_type = type->field (0).type (); |
c0dd20ea | 15598 | if (pfn_type == NULL |
78134374 SM |
15599 | || pfn_type->code () != TYPE_CODE_PTR |
15600 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15601 | return; |
c0dd20ea DJ |
15602 | |
15603 | /* Look for the "this" argument. */ | |
15604 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15605 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15606 | /* || pfn_type->field (0).type () == NULL */ |
15607 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15608 | return; |
c0dd20ea | 15609 | |
940da03e | 15610 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15611 | new_type = alloc_type (objfile); |
09e2d7c7 | 15612 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15613 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15614 | pfn_type->has_varargs ()); |
0b92b5bb | 15615 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15616 | } |
1168df01 | 15617 | |
e26624c6 TT |
15618 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15619 | requires rewriting, then copy it and return the updated copy. | |
15620 | Otherwise return nullptr. */ | |
15621 | ||
15622 | static struct type * | |
15623 | rewrite_array_type (struct type *type) | |
15624 | { | |
15625 | if (type->code () != TYPE_CODE_ARRAY) | |
15626 | return nullptr; | |
15627 | ||
15628 | struct type *index_type = type->index_type (); | |
15629 | range_bounds *current_bounds = index_type->bounds (); | |
15630 | ||
15631 | /* Handle multi-dimensional arrays. */ | |
15632 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15633 | if (new_target == nullptr) | |
15634 | { | |
15635 | /* Maybe we don't need to rewrite this array. */ | |
15636 | if (current_bounds->low.kind () == PROP_CONST | |
15637 | && current_bounds->high.kind () == PROP_CONST) | |
15638 | return nullptr; | |
15639 | } | |
15640 | ||
15641 | /* Either the target type was rewritten, or the bounds have to be | |
15642 | updated. Either way we want to copy the type and update | |
15643 | everything. */ | |
15644 | struct type *copy = copy_type (type); | |
15645 | int nfields = copy->num_fields (); | |
15646 | field *new_fields | |
15647 | = ((struct field *) TYPE_ZALLOC (copy, | |
15648 | nfields * sizeof (struct field))); | |
15649 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15650 | copy->set_fields (new_fields); | |
15651 | if (new_target != nullptr) | |
15652 | TYPE_TARGET_TYPE (copy) = new_target; | |
15653 | ||
15654 | struct type *index_copy = copy_type (index_type); | |
15655 | range_bounds *bounds | |
15656 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15657 | sizeof (range_bounds)); | |
15658 | *bounds = *current_bounds; | |
15659 | bounds->low.set_const_val (1); | |
15660 | bounds->high.set_const_val (0); | |
15661 | index_copy->set_bounds (bounds); | |
15662 | copy->set_index_type (index_copy); | |
15663 | ||
15664 | return copy; | |
15665 | } | |
15666 | ||
57567375 TT |
15667 | /* While some versions of GCC will generate complicated DWARF for an |
15668 | array (see quirk_ada_thick_pointer), more recent versions were | |
15669 | modified to emit an explicit thick pointer structure. However, in | |
15670 | this case, the array still has DWARF expressions for its ranges, | |
15671 | and these must be ignored. */ | |
15672 | ||
15673 | static void | |
15674 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15675 | struct type *type) | |
15676 | { | |
15677 | gdb_assert (cu->language == language_ada); | |
15678 | ||
15679 | /* Check for a structure with two children. */ | |
15680 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15681 | return; | |
15682 | ||
15683 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15684 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15685 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15686 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15687 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15688 | return; | |
15689 | ||
15690 | /* Make sure we're looking at a pointer to an array. */ | |
15691 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15692 | return; | |
57567375 | 15693 | |
e26624c6 TT |
15694 | /* The Ada code already knows how to handle these types, so all that |
15695 | we need to do is turn the bounds into static bounds. However, we | |
15696 | don't want to rewrite existing array or index types in-place, | |
15697 | because those may be referenced in other contexts where this | |
15698 | rewriting is undesirable. */ | |
15699 | struct type *new_ary_type | |
15700 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15701 | if (new_ary_type != nullptr) | |
15702 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15703 | } |
15704 | ||
2b4424c3 TT |
15705 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15706 | appropriate error checking and issuing complaints if there is a | |
15707 | problem. */ | |
15708 | ||
15709 | static ULONGEST | |
15710 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15711 | { | |
15712 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15713 | ||
15714 | if (attr == nullptr) | |
15715 | return 0; | |
15716 | ||
cd6c91b4 | 15717 | if (!attr->form_is_constant ()) |
2b4424c3 | 15718 | { |
b98664d3 | 15719 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15720 | " - DIE at %s [in module %s]"), |
15721 | sect_offset_str (die->sect_off), | |
5e22e966 | 15722 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15723 | return 0; |
15724 | } | |
15725 | ||
529908cb TT |
15726 | LONGEST val = attr->constant_value (0); |
15727 | if (val < 0) | |
2b4424c3 | 15728 | { |
529908cb TT |
15729 | complaint (_("DW_AT_alignment value must not be negative" |
15730 | " - DIE at %s [in module %s]"), | |
15731 | sect_offset_str (die->sect_off), | |
15732 | objfile_name (cu->per_objfile->objfile)); | |
15733 | return 0; | |
2b4424c3 | 15734 | } |
529908cb | 15735 | ULONGEST align = val; |
2b4424c3 TT |
15736 | |
15737 | if (align == 0) | |
15738 | { | |
b98664d3 | 15739 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15740 | " - DIE at %s [in module %s]"), |
15741 | sect_offset_str (die->sect_off), | |
5e22e966 | 15742 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15743 | return 0; |
15744 | } | |
15745 | if ((align & (align - 1)) != 0) | |
15746 | { | |
b98664d3 | 15747 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15748 | " - DIE at %s [in module %s]"), |
15749 | sect_offset_str (die->sect_off), | |
5e22e966 | 15750 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15751 | return 0; |
15752 | } | |
15753 | ||
15754 | return align; | |
15755 | } | |
15756 | ||
15757 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15758 | the alignment for TYPE. */ | |
15759 | ||
15760 | static void | |
15761 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15762 | struct type *type) | |
15763 | { | |
15764 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15765 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15766 | " - DIE at %s [in module %s]"), |
15767 | sect_offset_str (die->sect_off), | |
5e22e966 | 15768 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15769 | } |
685b1105 | 15770 | |
e35000a7 TBA |
15771 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15772 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15773 | ||
15774 | static bool | |
15775 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15776 | { | |
15777 | switch (value) | |
15778 | { | |
15779 | case DW_CC_normal: | |
15780 | case DW_CC_pass_by_reference: | |
15781 | case DW_CC_pass_by_value: | |
15782 | return true; | |
15783 | ||
15784 | default: | |
15785 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15786 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15787 | return false; |
15788 | } | |
15789 | } | |
15790 | ||
d0922fcf TBA |
15791 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15792 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15793 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15794 | ||
15795 | static bool | |
15796 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15797 | { | |
15798 | switch (value) | |
15799 | { | |
15800 | case DW_CC_normal: | |
15801 | case DW_CC_program: | |
15802 | case DW_CC_nocall: | |
15803 | return true; | |
15804 | ||
15805 | case DW_CC_GNU_renesas_sh: | |
15806 | case DW_CC_GNU_borland_fastcall_i386: | |
15807 | case DW_CC_GDB_IBM_OpenCL: | |
15808 | return true; | |
15809 | ||
15810 | default: | |
15811 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15812 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15813 | return false; |
15814 | } | |
15815 | } | |
15816 | ||
c906108c | 15817 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15818 | (definition) to create a type for the structure or union. Fill in |
15819 | the type's name and general properties; the members will not be | |
83655187 DE |
15820 | processed until process_structure_scope. A symbol table entry for |
15821 | the type will also not be done until process_structure_scope (assuming | |
15822 | the type has a name). | |
c906108c | 15823 | |
c767944b DJ |
15824 | NOTE: we need to call these functions regardless of whether or not the |
15825 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15826 | structure or union. This gets the type entered into our set of |
83655187 | 15827 | user defined types. */ |
c906108c | 15828 | |
f792889a | 15829 | static struct type * |
134d01f1 | 15830 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15831 | { |
5e22e966 | 15832 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15833 | struct type *type; |
15834 | struct attribute *attr; | |
15d034d0 | 15835 | const char *name; |
c906108c | 15836 | |
348e048f DE |
15837 | /* If the definition of this type lives in .debug_types, read that type. |
15838 | Don't follow DW_AT_specification though, that will take us back up | |
15839 | the chain and we want to go down. */ | |
052c8bb8 | 15840 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15841 | if (attr != nullptr) |
348e048f | 15842 | { |
ac9ec31b | 15843 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15844 | |
ac9ec31b | 15845 | /* The type's CU may not be the same as CU. |
02142a6c | 15846 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15847 | return set_die_type (die, type, cu); |
15848 | } | |
15849 | ||
c0dd20ea | 15850 | type = alloc_type (objfile); |
c906108c | 15851 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15852 | |
39cbfefa DJ |
15853 | name = dwarf2_name (die, cu); |
15854 | if (name != NULL) | |
c906108c | 15855 | { |
987504bb | 15856 | if (cu->language == language_cplus |
c44af4eb TT |
15857 | || cu->language == language_d |
15858 | || cu->language == language_rust) | |
63d06c5c | 15859 | { |
15d034d0 | 15860 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15861 | |
15862 | /* dwarf2_full_name might have already finished building the DIE's | |
15863 | type. If so, there is no need to continue. */ | |
15864 | if (get_die_type (die, cu) != NULL) | |
15865 | return get_die_type (die, cu); | |
15866 | ||
d0e39ea2 | 15867 | type->set_name (full_name); |
63d06c5c DC |
15868 | } |
15869 | else | |
15870 | { | |
d8151005 DJ |
15871 | /* The name is already allocated along with this objfile, so |
15872 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15873 | type->set_name (name); |
63d06c5c | 15874 | } |
c906108c SS |
15875 | } |
15876 | ||
15877 | if (die->tag == DW_TAG_structure_type) | |
15878 | { | |
67607e24 | 15879 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15880 | } |
15881 | else if (die->tag == DW_TAG_union_type) | |
15882 | { | |
67607e24 | 15883 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15884 | } |
15885 | else | |
15886 | { | |
67607e24 | 15887 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15888 | } |
15889 | ||
0cc2414c | 15890 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
aa70e35c | 15891 | type->set_is_declared_class (true); |
0cc2414c | 15892 | |
e35000a7 TBA |
15893 | /* Store the calling convention in the type if it's available in |
15894 | the die. Otherwise the calling convention remains set to | |
15895 | the default value DW_CC_normal. */ | |
15896 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15897 | if (attr != nullptr | |
529908cb | 15898 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
15899 | { |
15900 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15901 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 15902 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
15903 | } |
15904 | ||
e142c38c | 15905 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15906 | if (attr != nullptr) |
c906108c | 15907 | { |
cd6c91b4 | 15908 | if (attr->form_is_constant ()) |
dda83cd7 | 15909 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
15910 | else |
15911 | { | |
f8e89861 | 15912 | struct dynamic_prop prop; |
293e7e51 | 15913 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15914 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 15915 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 15916 | } |
c906108c SS |
15917 | } |
15918 | else | |
15919 | { | |
15920 | TYPE_LENGTH (type) = 0; | |
15921 | } | |
15922 | ||
2b4424c3 TT |
15923 | maybe_set_alignment (cu, die, type); |
15924 | ||
5230b05a | 15925 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15926 | { |
5230b05a WT |
15927 | /* ICC<14 does not output the required DW_AT_declaration on |
15928 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 15929 | type->set_is_stub (true); |
685b1105 JK |
15930 | } |
15931 | else | |
9baccff6 | 15932 | type->set_stub_is_supported (true); |
685b1105 | 15933 | |
dc718098 | 15934 | if (die_is_declaration (die, cu)) |
b4b73759 | 15935 | type->set_is_stub (true); |
a6c727b2 DJ |
15936 | else if (attr == NULL && die->child == NULL |
15937 | && producer_is_realview (cu->producer)) | |
15938 | /* RealView does not output the required DW_AT_declaration | |
15939 | on incomplete types. */ | |
b4b73759 | 15940 | type->set_is_stub (true); |
dc718098 | 15941 | |
c906108c SS |
15942 | /* We need to add the type field to the die immediately so we don't |
15943 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15944 | type within the structure itself. */ |
1c379e20 | 15945 | set_die_type (die, type, cu); |
c906108c | 15946 | |
7e314c57 JK |
15947 | /* set_die_type should be already done. */ |
15948 | set_descriptive_type (type, die, cu); | |
15949 | ||
c767944b DJ |
15950 | return type; |
15951 | } | |
15952 | ||
9c6a1327 TT |
15953 | static void handle_struct_member_die |
15954 | (struct die_info *child_die, | |
15955 | struct type *type, | |
15956 | struct field_info *fi, | |
15957 | std::vector<struct symbol *> *template_args, | |
15958 | struct dwarf2_cu *cu); | |
15959 | ||
15960 | /* A helper for handle_struct_member_die that handles | |
15961 | DW_TAG_variant_part. */ | |
15962 | ||
15963 | static void | |
15964 | handle_variant_part (struct die_info *die, struct type *type, | |
15965 | struct field_info *fi, | |
15966 | std::vector<struct symbol *> *template_args, | |
15967 | struct dwarf2_cu *cu) | |
15968 | { | |
15969 | variant_part_builder *new_part; | |
15970 | if (fi->current_variant_part == nullptr) | |
15971 | { | |
15972 | fi->variant_parts.emplace_back (); | |
15973 | new_part = &fi->variant_parts.back (); | |
15974 | } | |
15975 | else if (!fi->current_variant_part->processing_variant) | |
15976 | { | |
15977 | complaint (_("nested DW_TAG_variant_part seen " | |
15978 | "- DIE at %s [in module %s]"), | |
15979 | sect_offset_str (die->sect_off), | |
5e22e966 | 15980 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15981 | return; |
15982 | } | |
15983 | else | |
15984 | { | |
15985 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15986 | current.variant_parts.emplace_back (); | |
15987 | new_part = ¤t.variant_parts.back (); | |
15988 | } | |
15989 | ||
15990 | /* When we recurse, we want callees to add to this new variant | |
15991 | part. */ | |
15992 | scoped_restore save_current_variant_part | |
15993 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15994 | ||
15995 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15996 | if (discr == NULL) | |
15997 | { | |
15998 | /* It's a univariant form, an extension we support. */ | |
15999 | } | |
16000 | else if (discr->form_is_ref ()) | |
16001 | { | |
16002 | struct dwarf2_cu *target_cu = cu; | |
16003 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16004 | ||
16005 | new_part->discriminant_offset = target_die->sect_off; | |
16006 | } | |
16007 | else | |
16008 | { | |
16009 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16010 | " - DIE at %s [in module %s]"), | |
16011 | sect_offset_str (die->sect_off), | |
5e22e966 | 16012 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16013 | } |
16014 | ||
16015 | for (die_info *child_die = die->child; | |
16016 | child_die != NULL; | |
16017 | child_die = child_die->sibling) | |
16018 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16019 | } | |
16020 | ||
16021 | /* A helper for handle_struct_member_die that handles | |
16022 | DW_TAG_variant. */ | |
16023 | ||
16024 | static void | |
16025 | handle_variant (struct die_info *die, struct type *type, | |
16026 | struct field_info *fi, | |
16027 | std::vector<struct symbol *> *template_args, | |
16028 | struct dwarf2_cu *cu) | |
16029 | { | |
16030 | if (fi->current_variant_part == nullptr) | |
16031 | { | |
16032 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16033 | "- DIE at %s [in module %s]"), | |
16034 | sect_offset_str (die->sect_off), | |
5e22e966 | 16035 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16036 | return; |
16037 | } | |
16038 | if (fi->current_variant_part->processing_variant) | |
16039 | { | |
16040 | complaint (_("nested DW_TAG_variant seen " | |
16041 | "- DIE at %s [in module %s]"), | |
16042 | sect_offset_str (die->sect_off), | |
5e22e966 | 16043 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16044 | return; |
16045 | } | |
16046 | ||
16047 | scoped_restore save_processing_variant | |
16048 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16049 | true); | |
16050 | ||
16051 | fi->current_variant_part->variants.emplace_back (); | |
16052 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16053 | variant.first_field = fi->fields.size (); | |
16054 | ||
16055 | /* In a variant we want to get the discriminant and also add a | |
16056 | field for our sole member child. */ | |
16057 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16058 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16059 | { |
16060 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16061 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16062 | variant.default_branch = true; |
16063 | else | |
9d2246fc | 16064 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16065 | } |
16066 | else | |
cae21f8e | 16067 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16068 | |
16069 | for (die_info *variant_child = die->child; | |
16070 | variant_child != NULL; | |
16071 | variant_child = variant_child->sibling) | |
16072 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16073 | ||
16074 | variant.last_field = fi->fields.size (); | |
16075 | } | |
16076 | ||
2ddeaf8a TT |
16077 | /* A helper for process_structure_scope that handles a single member |
16078 | DIE. */ | |
16079 | ||
16080 | static void | |
16081 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16082 | struct field_info *fi, | |
16083 | std::vector<struct symbol *> *template_args, | |
16084 | struct dwarf2_cu *cu) | |
16085 | { | |
16086 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16087 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16088 | { |
16089 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16090 | should be a DW_TAG_member that is a declaration, but | |
16091 | all versions of G++ as of this writing (so through at | |
16092 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16093 | tags for them instead. */ | |
16094 | dwarf2_add_field (fi, child_die, cu); | |
16095 | } | |
16096 | else if (child_die->tag == DW_TAG_subprogram) | |
16097 | { | |
16098 | /* Rust doesn't have member functions in the C++ sense. | |
16099 | However, it does emit ordinary functions as children | |
16100 | of a struct DIE. */ | |
16101 | if (cu->language == language_rust) | |
16102 | read_func_scope (child_die, cu); | |
16103 | else | |
16104 | { | |
16105 | /* C++ member function. */ | |
16106 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16107 | } | |
16108 | } | |
16109 | else if (child_die->tag == DW_TAG_inheritance) | |
16110 | { | |
16111 | /* C++ base class field. */ | |
16112 | dwarf2_add_field (fi, child_die, cu); | |
16113 | } | |
16114 | else if (type_can_define_types (child_die)) | |
16115 | dwarf2_add_type_defn (fi, child_die, cu); | |
16116 | else if (child_die->tag == DW_TAG_template_type_param | |
16117 | || child_die->tag == DW_TAG_template_value_param) | |
16118 | { | |
16119 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16120 | ||
16121 | if (arg != NULL) | |
16122 | template_args->push_back (arg); | |
16123 | } | |
9c6a1327 TT |
16124 | else if (child_die->tag == DW_TAG_variant_part) |
16125 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16126 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16127 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16128 | } |
16129 | ||
c767944b DJ |
16130 | /* Finish creating a structure or union type, including filling in |
16131 | its members and creating a symbol for it. */ | |
16132 | ||
16133 | static void | |
16134 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16135 | { | |
5e22e966 | 16136 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16137 | struct die_info *child_die; |
c767944b DJ |
16138 | struct type *type; |
16139 | ||
16140 | type = get_die_type (die, cu); | |
16141 | if (type == NULL) | |
16142 | type = read_structure_type (die, cu); | |
16143 | ||
3e1d3d8c | 16144 | bool has_template_parameters = false; |
e142c38c | 16145 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16146 | { |
16147 | struct field_info fi; | |
2f4732b0 | 16148 | std::vector<struct symbol *> template_args; |
c906108c | 16149 | |
639d11d3 | 16150 | child_die = die->child; |
c906108c SS |
16151 | |
16152 | while (child_die && child_die->tag) | |
16153 | { | |
2ddeaf8a | 16154 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16155 | child_die = child_die->sibling; |
c906108c SS |
16156 | } |
16157 | ||
34eaf542 | 16158 | /* Attach template arguments to type. */ |
2f4732b0 | 16159 | if (!template_args.empty ()) |
34eaf542 | 16160 | { |
3e1d3d8c | 16161 | has_template_parameters = true; |
34eaf542 | 16162 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16163 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16164 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16165 | = XOBNEWVEC (&objfile->objfile_obstack, |
16166 | struct symbol *, | |
16167 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16168 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16169 | template_args.data (), |
34eaf542 TT |
16170 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16171 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16172 | } |
16173 | ||
c906108c | 16174 | /* Attach fields and member functions to the type. */ |
317f7127 | 16175 | if (fi.nfields () > 0) |
e7c27a73 | 16176 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16177 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16178 | { |
e7c27a73 | 16179 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16180 | |
c5aa993b | 16181 | /* Get the type which refers to the base class (possibly this |
c906108c | 16182 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16183 | class from the DW_AT_containing_type attribute. This use of |
16184 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16185 | |
e142c38c | 16186 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16187 | { |
e7c27a73 | 16188 | struct type *t = die_containing_type (die, cu); |
c906108c | 16189 | |
ae6ae975 | 16190 | set_type_vptr_basetype (type, t); |
c906108c SS |
16191 | if (type == t) |
16192 | { | |
c906108c SS |
16193 | int i; |
16194 | ||
16195 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16196 | for (i = t->num_fields () - 1; |
c906108c SS |
16197 | i >= TYPE_N_BASECLASSES (t); |
16198 | --i) | |
16199 | { | |
0d5cff50 | 16200 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16201 | |
dda83cd7 | 16202 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16203 | { |
ae6ae975 | 16204 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16205 | break; |
16206 | } | |
16207 | } | |
16208 | ||
16209 | /* Complain if virtual function table field not found. */ | |
16210 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16211 | complaint (_("virtual function table pointer " |
3e43a32a | 16212 | "not found when defining class '%s'"), |
7d93a1e0 | 16213 | type->name () ? type->name () : ""); |
c906108c SS |
16214 | } |
16215 | else | |
16216 | { | |
ae6ae975 | 16217 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16218 | } |
16219 | } | |
f6235d4c | 16220 | else if (cu->producer |
61012eef | 16221 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16222 | { |
16223 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16224 | of the containing type, but the vtable pointer is |
16225 | always named __vfp. */ | |
f6235d4c EZ |
16226 | |
16227 | int i; | |
16228 | ||
1f704f76 | 16229 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16230 | i >= TYPE_N_BASECLASSES (type); |
16231 | --i) | |
16232 | { | |
16233 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16234 | { | |
ae6ae975 DE |
16235 | set_type_vptr_fieldno (type, i); |
16236 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16237 | break; |
16238 | } | |
16239 | } | |
16240 | } | |
c906108c | 16241 | } |
98751a41 JK |
16242 | |
16243 | /* Copy fi.typedef_field_list linked list elements content into the | |
16244 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16245 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16246 | { |
be2daae6 | 16247 | int count = fi.typedef_field_list.size (); |
98751a41 | 16248 | |
a0d7a4ff | 16249 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16250 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16251 | = ((struct decl_field *) |
be2daae6 TT |
16252 | TYPE_ALLOC (type, |
16253 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16254 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16255 | |
be2daae6 TT |
16256 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16257 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16258 | } |
c767944b | 16259 | |
883fd55a KS |
16260 | /* Copy fi.nested_types_list linked list elements content into the |
16261 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16262 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16263 | { |
be2daae6 | 16264 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16265 | |
16266 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16267 | TYPE_NESTED_TYPES_ARRAY (type) | |
16268 | = ((struct decl_field *) | |
be2daae6 TT |
16269 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16270 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16271 | |
be2daae6 TT |
16272 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16273 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16274 | } |
c906108c | 16275 | } |
63d06c5c | 16276 | |
bb5ed363 | 16277 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16278 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16279 | cu->rust_unions.push_back (type); | |
57567375 TT |
16280 | else if (cu->language == language_ada) |
16281 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16282 | |
90aeadfc DC |
16283 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16284 | snapshots) has been known to create a die giving a declaration | |
16285 | for a class that has, as a child, a die giving a definition for a | |
16286 | nested class. So we have to process our children even if the | |
16287 | current die is a declaration. Normally, of course, a declaration | |
16288 | won't have any children at all. */ | |
134d01f1 | 16289 | |
ca040673 DE |
16290 | child_die = die->child; |
16291 | ||
90aeadfc DC |
16292 | while (child_die != NULL && child_die->tag) |
16293 | { | |
16294 | if (child_die->tag == DW_TAG_member | |
16295 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16296 | || child_die->tag == DW_TAG_inheritance |
16297 | || child_die->tag == DW_TAG_template_value_param | |
16298 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16299 | { |
90aeadfc | 16300 | /* Do nothing. */ |
134d01f1 | 16301 | } |
90aeadfc DC |
16302 | else |
16303 | process_die (child_die, cu); | |
134d01f1 | 16304 | |
436c571c | 16305 | child_die = child_die->sibling; |
134d01f1 DJ |
16306 | } |
16307 | ||
fa4028e9 JB |
16308 | /* Do not consider external references. According to the DWARF standard, |
16309 | these DIEs are identified by the fact that they have no byte_size | |
16310 | attribute, and a declaration attribute. */ | |
16311 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16312 | || !die_is_declaration (die, cu) |
16313 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16314 | { |
16315 | struct symbol *sym = new_symbol (die, type, cu); | |
16316 | ||
16317 | if (has_template_parameters) | |
16318 | { | |
a776957c TT |
16319 | struct symtab *symtab; |
16320 | if (sym != nullptr) | |
16321 | symtab = symbol_symtab (sym); | |
16322 | else if (cu->line_header != nullptr) | |
16323 | { | |
16324 | /* Any related symtab will do. */ | |
16325 | symtab | |
7ba99d21 | 16326 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16327 | } |
16328 | else | |
16329 | { | |
16330 | symtab = nullptr; | |
16331 | complaint (_("could not find suitable " | |
16332 | "symtab for template parameter" | |
16333 | " - DIE at %s [in module %s]"), | |
16334 | sect_offset_str (die->sect_off), | |
16335 | objfile_name (objfile)); | |
16336 | } | |
16337 | ||
16338 | if (symtab != nullptr) | |
16339 | { | |
16340 | /* Make sure that the symtab is set on the new symbols. | |
16341 | Even though they don't appear in this symtab directly, | |
16342 | other parts of gdb assume that symbols do, and this is | |
16343 | reasonably true. */ | |
16344 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16345 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16346 | } | |
3e1d3d8c TT |
16347 | } |
16348 | } | |
134d01f1 DJ |
16349 | } |
16350 | ||
ed6acedd TT |
16351 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16352 | type, update TYPE using some information only available in DIE's | |
16353 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16354 | |
16355 | static void | |
16356 | update_enumeration_type_from_children (struct die_info *die, | |
16357 | struct type *type, | |
16358 | struct dwarf2_cu *cu) | |
16359 | { | |
60f7655a | 16360 | struct die_info *child_die; |
55426c9d JB |
16361 | int unsigned_enum = 1; |
16362 | int flag_enum = 1; | |
55426c9d | 16363 | |
8268c778 | 16364 | auto_obstack obstack; |
ed6acedd | 16365 | std::vector<struct field> fields; |
55426c9d | 16366 | |
60f7655a DE |
16367 | for (child_die = die->child; |
16368 | child_die != NULL && child_die->tag; | |
436c571c | 16369 | child_die = child_die->sibling) |
55426c9d JB |
16370 | { |
16371 | struct attribute *attr; | |
16372 | LONGEST value; | |
16373 | const gdb_byte *bytes; | |
16374 | struct dwarf2_locexpr_baton *baton; | |
16375 | const char *name; | |
60f7655a | 16376 | |
55426c9d JB |
16377 | if (child_die->tag != DW_TAG_enumerator) |
16378 | continue; | |
16379 | ||
16380 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16381 | if (attr == NULL) | |
16382 | continue; | |
16383 | ||
16384 | name = dwarf2_name (child_die, cu); | |
16385 | if (name == NULL) | |
16386 | name = "<anonymous enumerator>"; | |
16387 | ||
16388 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16389 | &value, &bytes, &baton); | |
16390 | if (value < 0) | |
16391 | { | |
16392 | unsigned_enum = 0; | |
16393 | flag_enum = 0; | |
16394 | } | |
55426c9d | 16395 | else |
edd45eb0 SM |
16396 | { |
16397 | if (count_one_bits_ll (value) >= 2) | |
16398 | flag_enum = 0; | |
edd45eb0 | 16399 | } |
55426c9d | 16400 | |
ed6acedd TT |
16401 | fields.emplace_back (); |
16402 | struct field &field = fields.back (); | |
16403 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16404 | SET_FIELD_ENUMVAL (field, value); | |
16405 | } | |
16406 | ||
16407 | if (!fields.empty ()) | |
16408 | { | |
5e33d5f4 | 16409 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16410 | type->set_fields |
16411 | ((struct field *) | |
16412 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16413 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16414 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16415 | } |
16416 | ||
16417 | if (unsigned_enum) | |
653223d3 SM |
16418 | type->set_is_unsigned (true); |
16419 | ||
55426c9d | 16420 | if (flag_enum) |
9902b327 | 16421 | type->set_is_flag_enum (true); |
55426c9d JB |
16422 | } |
16423 | ||
134d01f1 DJ |
16424 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16425 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16426 | |
f792889a | 16427 | static struct type * |
134d01f1 | 16428 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16429 | { |
5e22e966 | 16430 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16431 | struct type *type; |
c906108c | 16432 | struct attribute *attr; |
0114d602 | 16433 | const char *name; |
134d01f1 | 16434 | |
348e048f DE |
16435 | /* If the definition of this type lives in .debug_types, read that type. |
16436 | Don't follow DW_AT_specification though, that will take us back up | |
16437 | the chain and we want to go down. */ | |
052c8bb8 | 16438 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16439 | if (attr != nullptr) |
348e048f | 16440 | { |
ac9ec31b | 16441 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16442 | |
ac9ec31b | 16443 | /* The type's CU may not be the same as CU. |
02142a6c | 16444 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16445 | return set_die_type (die, type, cu); |
16446 | } | |
16447 | ||
c906108c SS |
16448 | type = alloc_type (objfile); |
16449 | ||
67607e24 | 16450 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16451 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16452 | if (name != NULL) |
d0e39ea2 | 16453 | type->set_name (name); |
c906108c | 16454 | |
0626fc76 TT |
16455 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16456 | if (attr != NULL) | |
16457 | { | |
16458 | struct type *underlying_type = die_type (die, cu); | |
16459 | ||
16460 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16461 | } | |
16462 | ||
e142c38c | 16463 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16464 | if (attr != nullptr) |
c906108c | 16465 | { |
529908cb | 16466 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16467 | } |
16468 | else | |
16469 | { | |
16470 | TYPE_LENGTH (type) = 0; | |
16471 | } | |
16472 | ||
2b4424c3 TT |
16473 | maybe_set_alignment (cu, die, type); |
16474 | ||
137033e9 JB |
16475 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16476 | declared as private in the package spec, and then defined only | |
16477 | inside the package body. Such types are known as Taft Amendment | |
16478 | Types. When another package uses such a type, an incomplete DIE | |
16479 | may be generated by the compiler. */ | |
02eb380e | 16480 | if (die_is_declaration (die, cu)) |
b4b73759 | 16481 | type->set_is_stub (true); |
02eb380e | 16482 | |
0626fc76 TT |
16483 | /* If this type has an underlying type that is not a stub, then we |
16484 | may use its attributes. We always use the "unsigned" attribute | |
16485 | in this situation, because ordinarily we guess whether the type | |
16486 | is unsigned -- but the guess can be wrong and the underlying type | |
16487 | can tell us the reality. However, we defer to a local size | |
16488 | attribute if one exists, because this lets the compiler override | |
16489 | the underlying type if needed. */ | |
e46d3488 | 16490 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16491 | { |
9e7c9a03 HD |
16492 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16493 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16494 | |
16495 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16496 | ||
0626fc76 | 16497 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16498 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16499 | |
2b4424c3 | 16500 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16501 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16502 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16503 | } |
16504 | ||
aa70e35c | 16505 | type->set_is_declared_class (dwarf2_flag_true_p (die, DW_AT_enum_class, cu)); |
3d567982 | 16506 | |
ed6acedd TT |
16507 | set_die_type (die, type, cu); |
16508 | ||
16509 | /* Finish the creation of this type by using the enum's children. | |
16510 | Note that, as usual, this must come after set_die_type to avoid | |
16511 | infinite recursion when trying to compute the names of the | |
16512 | enumerators. */ | |
16513 | update_enumeration_type_from_children (die, type, cu); | |
16514 | ||
16515 | return type; | |
134d01f1 DJ |
16516 | } |
16517 | ||
16518 | /* Given a pointer to a die which begins an enumeration, process all | |
16519 | the dies that define the members of the enumeration, and create the | |
16520 | symbol for the enumeration type. | |
16521 | ||
16522 | NOTE: We reverse the order of the element list. */ | |
16523 | ||
16524 | static void | |
16525 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16526 | { | |
f792889a | 16527 | struct type *this_type; |
134d01f1 | 16528 | |
f792889a DJ |
16529 | this_type = get_die_type (die, cu); |
16530 | if (this_type == NULL) | |
16531 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16532 | |
639d11d3 | 16533 | if (die->child != NULL) |
c906108c | 16534 | { |
9dc481d3 | 16535 | struct die_info *child_die; |
15d034d0 | 16536 | const char *name; |
9dc481d3 | 16537 | |
639d11d3 | 16538 | child_die = die->child; |
c906108c SS |
16539 | while (child_die && child_die->tag) |
16540 | { | |
16541 | if (child_die->tag != DW_TAG_enumerator) | |
16542 | { | |
e7c27a73 | 16543 | process_die (child_die, cu); |
c906108c SS |
16544 | } |
16545 | else | |
16546 | { | |
39cbfefa DJ |
16547 | name = dwarf2_name (child_die, cu); |
16548 | if (name) | |
ed6acedd | 16549 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16550 | } |
16551 | ||
436c571c | 16552 | child_die = child_die->sibling; |
c906108c | 16553 | } |
c906108c | 16554 | } |
134d01f1 | 16555 | |
6c83ed52 TT |
16556 | /* If we are reading an enum from a .debug_types unit, and the enum |
16557 | is a declaration, and the enum is not the signatured type in the | |
16558 | unit, then we do not want to add a symbol for it. Adding a | |
16559 | symbol would in some cases obscure the true definition of the | |
16560 | enum, giving users an incomplete type when the definition is | |
16561 | actually available. Note that we do not want to do this for all | |
16562 | enums which are just declarations, because C++0x allows forward | |
16563 | enum declarations. */ | |
3019eac3 | 16564 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16565 | && die_is_declaration (die, cu)) |
16566 | { | |
52dc124a | 16567 | struct signatured_type *sig_type; |
6c83ed52 | 16568 | |
c0f78cd4 | 16569 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16570 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16571 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16572 | return; |
16573 | } | |
16574 | ||
f792889a | 16575 | new_symbol (die, this_type, cu); |
c906108c SS |
16576 | } |
16577 | ||
57567375 TT |
16578 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16579 | expression for an index type and finds the corresponding field | |
16580 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16581 | and updates *FIELD, false if it fails to recognize an | |
16582 | expression. */ | |
16583 | ||
16584 | static bool | |
16585 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16586 | int *bounds_offset, struct field *field, | |
16587 | struct dwarf2_cu *cu) | |
16588 | { | |
16589 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16590 | if (attr == nullptr || !attr->form_is_block ()) | |
16591 | return false; | |
16592 | ||
16593 | const struct dwarf_block *block = attr->as_block (); | |
16594 | const gdb_byte *start = block->data; | |
16595 | const gdb_byte *end = block->data + block->size; | |
16596 | ||
16597 | /* The expression to recognize generally looks like: | |
16598 | ||
16599 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16600 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16601 | ||
16602 | However, the second "plus_uconst" may be missing: | |
16603 | ||
16604 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16605 | DW_OP_deref_size: 4) | |
16606 | ||
16607 | This happens when the field is at the start of the structure. | |
16608 | ||
16609 | Also, the final deref may not be sized: | |
16610 | ||
16611 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16612 | DW_OP_deref) | |
16613 | ||
16614 | This happens when the size of the index type happens to be the | |
16615 | same as the architecture's word size. This can occur with or | |
16616 | without the second plus_uconst. */ | |
16617 | ||
16618 | if (end - start < 2) | |
16619 | return false; | |
16620 | if (*start++ != DW_OP_push_object_address) | |
16621 | return false; | |
16622 | if (*start++ != DW_OP_plus_uconst) | |
16623 | return false; | |
16624 | ||
16625 | uint64_t this_bound_off; | |
16626 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16627 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16628 | return false; | |
16629 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16630 | is consistent among all bounds. */ | |
16631 | if (*bounds_offset == -1) | |
16632 | *bounds_offset = this_bound_off; | |
16633 | else if (*bounds_offset != this_bound_off) | |
16634 | return false; | |
16635 | ||
16636 | if (start == end || *start++ != DW_OP_deref) | |
16637 | return false; | |
16638 | ||
16639 | int offset = 0; | |
16640 | if (start ==end) | |
16641 | return false; | |
16642 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16643 | { | |
16644 | /* This means an offset of 0. */ | |
16645 | } | |
16646 | else if (*start++ != DW_OP_plus_uconst) | |
16647 | return false; | |
16648 | else | |
16649 | { | |
16650 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16651 | uint64_t val; | |
16652 | start = gdb_read_uleb128 (start, end, &val); | |
16653 | if (start == nullptr) | |
16654 | return false; | |
16655 | if ((int) val != val) | |
16656 | return false; | |
16657 | offset = val; | |
16658 | } | |
16659 | ||
16660 | if (start == end) | |
16661 | return false; | |
16662 | ||
16663 | uint64_t size; | |
16664 | if (*start == DW_OP_deref_size) | |
16665 | { | |
16666 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16667 | if (start == nullptr) | |
16668 | return false; | |
16669 | } | |
16670 | else if (*start == DW_OP_deref) | |
16671 | { | |
16672 | size = cu->header.addr_size; | |
16673 | ++start; | |
16674 | } | |
16675 | else | |
16676 | return false; | |
16677 | ||
16678 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16679 | if (size != TYPE_LENGTH (field->type ())) | |
16680 | FIELD_BITSIZE (*field) = 8 * size; | |
16681 | ||
16682 | return true; | |
16683 | } | |
16684 | ||
16685 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16686 | some kinds of Ada arrays: | |
16687 | ||
16688 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16689 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16690 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16691 | (DW_OP_push_object_address; DW_OP_deref) | |
16692 | <11e3> DW_AT_type : <0x1173> | |
16693 | <11e7> DW_AT_sibling : <0x1201> | |
16694 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16695 | <11ec> DW_AT_type : <0x1206> | |
16696 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16697 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16698 | DW_OP_deref_size: 4) | |
16699 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16700 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16701 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16702 | ||
16703 | This actually represents a "thick pointer", which is a structure | |
16704 | with two elements: one that is a pointer to the array data, and one | |
16705 | that is a pointer to another structure; this second structure holds | |
16706 | the array bounds. | |
16707 | ||
16708 | This returns a new type on success, or nullptr if this didn't | |
16709 | recognize the type. */ | |
16710 | ||
16711 | static struct type * | |
16712 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16713 | struct type *type) | |
16714 | { | |
16715 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16716 | /* So far we've only seen this with block form. */ | |
16717 | if (attr == nullptr || !attr->form_is_block ()) | |
16718 | return nullptr; | |
16719 | ||
16720 | /* Note that this will fail if the structure layout is changed by | |
16721 | the compiler. However, we have no good way to recognize some | |
16722 | other layout, because we don't know what expression the compiler | |
16723 | might choose to emit should this happen. */ | |
16724 | struct dwarf_block *blk = attr->as_block (); | |
16725 | if (blk->size != 2 | |
16726 | || blk->data[0] != DW_OP_push_object_address | |
16727 | || blk->data[1] != DW_OP_deref) | |
16728 | return nullptr; | |
16729 | ||
16730 | int bounds_offset = -1; | |
16731 | int max_align = -1; | |
16732 | std::vector<struct field> range_fields; | |
16733 | for (struct die_info *child_die = die->child; | |
16734 | child_die; | |
16735 | child_die = child_die->sibling) | |
16736 | { | |
16737 | if (child_die->tag == DW_TAG_subrange_type) | |
16738 | { | |
16739 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16740 | ||
16741 | int this_align = type_align (underlying); | |
16742 | if (this_align > max_align) | |
16743 | max_align = this_align; | |
16744 | ||
16745 | range_fields.emplace_back (); | |
16746 | range_fields.emplace_back (); | |
16747 | ||
16748 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16749 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16750 | ||
16751 | lower.set_type (underlying); | |
16752 | FIELD_ARTIFICIAL (lower) = 1; | |
16753 | ||
16754 | upper.set_type (underlying); | |
16755 | FIELD_ARTIFICIAL (upper) = 1; | |
16756 | ||
16757 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16758 | &bounds_offset, &lower, cu) | |
16759 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16760 | &bounds_offset, &upper, cu)) | |
16761 | return nullptr; | |
16762 | } | |
16763 | } | |
16764 | ||
16765 | /* This shouldn't really happen, but double-check that we found | |
16766 | where the bounds are stored. */ | |
16767 | if (bounds_offset == -1) | |
16768 | return nullptr; | |
16769 | ||
16770 | struct objfile *objfile = cu->per_objfile->objfile; | |
16771 | for (int i = 0; i < range_fields.size (); i += 2) | |
16772 | { | |
16773 | char name[20]; | |
16774 | ||
16775 | /* Set the name of each field in the bounds. */ | |
16776 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
16777 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
16778 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
16779 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
16780 | } | |
16781 | ||
16782 | struct type *bounds = alloc_type (objfile); | |
16783 | bounds->set_code (TYPE_CODE_STRUCT); | |
16784 | ||
16785 | bounds->set_num_fields (range_fields.size ()); | |
16786 | bounds->set_fields | |
16787 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
16788 | * sizeof (struct field)))); | |
16789 | memcpy (bounds->fields (), range_fields.data (), | |
16790 | bounds->num_fields () * sizeof (struct field)); | |
16791 | ||
16792 | int last_fieldno = range_fields.size () - 1; | |
16793 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
16794 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
16795 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
16796 | ||
16797 | /* Rewrite the existing array type in place. Specifically, we | |
16798 | remove any dynamic properties we might have read, and we replace | |
16799 | the index types. */ | |
16800 | struct type *iter = type; | |
16801 | for (int i = 0; i < range_fields.size (); i += 2) | |
16802 | { | |
16803 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
16804 | iter->main_type->dyn_prop_list = nullptr; | |
16805 | iter->set_index_type | |
16806 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
16807 | iter = TYPE_TARGET_TYPE (iter); | |
16808 | } | |
16809 | ||
16810 | struct type *result = alloc_type (objfile); | |
16811 | result->set_code (TYPE_CODE_STRUCT); | |
16812 | ||
16813 | result->set_num_fields (2); | |
16814 | result->set_fields | |
16815 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
16816 | * sizeof (struct field)))); | |
16817 | ||
16818 | /* The names are chosen to coincide with what the compiler does with | |
16819 | -fgnat-encodings=all, which the Ada code in gdb already | |
16820 | understands. */ | |
16821 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
16822 | result->field (0).set_type (lookup_pointer_type (type)); | |
16823 | ||
16824 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
16825 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
16826 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
16827 | ||
16828 | result->set_name (type->name ()); | |
16829 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
16830 | + TYPE_LENGTH (result->field (1).type ())); | |
16831 | ||
16832 | return result; | |
16833 | } | |
16834 | ||
c906108c SS |
16835 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
16836 | the DIE's type field. For now, this only handles one dimensional | |
16837 | arrays. */ | |
16838 | ||
f792889a | 16839 | static struct type * |
e7c27a73 | 16840 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16841 | { |
5e22e966 | 16842 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16843 | struct die_info *child_die; |
7e314c57 | 16844 | struct type *type; |
c906108c | 16845 | struct type *element_type, *range_type, *index_type; |
c906108c | 16846 | struct attribute *attr; |
15d034d0 | 16847 | const char *name; |
a405673c | 16848 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16849 | unsigned int bit_stride = 0; |
c906108c | 16850 | |
e7c27a73 | 16851 | element_type = die_type (die, cu); |
c906108c | 16852 | |
7e314c57 JK |
16853 | /* The die_type call above may have already set the type for this DIE. */ |
16854 | type = get_die_type (die, cu); | |
16855 | if (type) | |
16856 | return type; | |
16857 | ||
dc53a7ad JB |
16858 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16859 | if (attr != NULL) | |
a405673c JB |
16860 | { |
16861 | int stride_ok; | |
293e7e51 | 16862 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16863 | |
16864 | byte_stride_prop | |
16865 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16866 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16867 | prop_type); | |
a405673c JB |
16868 | if (!stride_ok) |
16869 | { | |
b98664d3 | 16870 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16871 | " - DIE at %s [in module %s]"), |
16872 | sect_offset_str (die->sect_off), | |
5e22e966 | 16873 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16874 | /* Ignore this attribute. We will likely not be able to print |
16875 | arrays of this type correctly, but there is little we can do | |
16876 | to help if we cannot read the attribute's value. */ | |
16877 | byte_stride_prop = NULL; | |
16878 | } | |
16879 | } | |
dc53a7ad JB |
16880 | |
16881 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16882 | if (attr != NULL) | |
529908cb | 16883 | bit_stride = attr->constant_value (0); |
dc53a7ad | 16884 | |
c906108c SS |
16885 | /* Irix 6.2 native cc creates array types without children for |
16886 | arrays with unspecified length. */ | |
639d11d3 | 16887 | if (die->child == NULL) |
c906108c | 16888 | { |
46bf5051 | 16889 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16890 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16891 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16892 | byte_stride_prop, bit_stride); |
f792889a | 16893 | return set_die_type (die, type, cu); |
c906108c SS |
16894 | } |
16895 | ||
791afaa2 | 16896 | std::vector<struct type *> range_types; |
639d11d3 | 16897 | child_die = die->child; |
c906108c SS |
16898 | while (child_die && child_die->tag) |
16899 | { | |
16900 | if (child_die->tag == DW_TAG_subrange_type) | |
16901 | { | |
f792889a | 16902 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16903 | |
dda83cd7 SM |
16904 | if (child_type != NULL) |
16905 | { | |
0963b4bd | 16906 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 16907 | array type creation. */ |
791afaa2 | 16908 | range_types.push_back (child_type); |
dda83cd7 | 16909 | } |
c906108c | 16910 | } |
436c571c | 16911 | child_die = child_die->sibling; |
c906108c SS |
16912 | } |
16913 | ||
cf2b2075 TV |
16914 | if (range_types.empty ()) |
16915 | { | |
16916 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
16917 | sect_offset_str (die->sect_off), | |
16918 | objfile_name (cu->per_objfile->objfile)); | |
16919 | return NULL; | |
16920 | } | |
16921 | ||
c906108c SS |
16922 | /* Dwarf2 dimensions are output from left to right, create the |
16923 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16924 | |
c906108c | 16925 | type = element_type; |
7ca2d3a3 DL |
16926 | |
16927 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16928 | { | |
16929 | int i = 0; | |
9a619af0 | 16930 | |
791afaa2 | 16931 | while (i < range_types.size ()) |
10f6a3ad TT |
16932 | { |
16933 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
16934 | byte_stride_prop, bit_stride); | |
16935 | bit_stride = 0; | |
16936 | byte_stride_prop = nullptr; | |
16937 | } | |
7ca2d3a3 DL |
16938 | } |
16939 | else | |
16940 | { | |
791afaa2 | 16941 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16942 | while (ndim-- > 0) |
10f6a3ad TT |
16943 | { |
16944 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
16945 | byte_stride_prop, bit_stride); | |
16946 | bit_stride = 0; | |
16947 | byte_stride_prop = nullptr; | |
16948 | } | |
7ca2d3a3 | 16949 | } |
c906108c | 16950 | |
cf2b2075 TV |
16951 | gdb_assert (type != element_type); |
16952 | ||
f5f8a009 EZ |
16953 | /* Understand Dwarf2 support for vector types (like they occur on |
16954 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16955 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16956 | custom vendor extension. The main difference between a regular | |
16957 | array and the vector variant is that vectors are passed by value | |
16958 | to functions. */ | |
e142c38c | 16959 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16960 | if (attr != nullptr) |
ea37ba09 | 16961 | make_vector_type (type); |
f5f8a009 | 16962 | |
dbc98a8b KW |
16963 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16964 | implementation may choose to implement triple vectors using this | |
16965 | attribute. */ | |
16966 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 16967 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 16968 | { |
529908cb TT |
16969 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
16970 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 16971 | else |
b98664d3 | 16972 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16973 | "than the total size of elements")); |
dbc98a8b KW |
16974 | } |
16975 | ||
39cbfefa DJ |
16976 | name = dwarf2_name (die, cu); |
16977 | if (name) | |
d0e39ea2 | 16978 | type->set_name (name); |
6e70227d | 16979 | |
2b4424c3 TT |
16980 | maybe_set_alignment (cu, die, type); |
16981 | ||
57567375 TT |
16982 | struct type *replacement_type = nullptr; |
16983 | if (cu->language == language_ada) | |
16984 | { | |
16985 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
16986 | if (replacement_type != nullptr) | |
16987 | type = replacement_type; | |
16988 | } | |
16989 | ||
0963b4bd | 16990 | /* Install the type in the die. */ |
57567375 | 16991 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
16992 | |
16993 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16994 | set_descriptive_type (type, die, cu); |
16995 | ||
7e314c57 | 16996 | return type; |
c906108c SS |
16997 | } |
16998 | ||
7ca2d3a3 | 16999 | static enum dwarf_array_dim_ordering |
6e70227d | 17000 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17001 | { |
17002 | struct attribute *attr; | |
17003 | ||
17004 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17005 | ||
435d3d88 | 17006 | if (attr != nullptr) |
1bc397c5 TT |
17007 | { |
17008 | LONGEST val = attr->constant_value (-1); | |
17009 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17010 | return (enum dwarf_array_dim_ordering) val; | |
17011 | } | |
7ca2d3a3 | 17012 | |
0963b4bd MS |
17013 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17014 | opposite order to the dwarf2 specification, but data is still | |
17015 | laid out as per normal fortran. | |
7ca2d3a3 | 17016 | |
0963b4bd MS |
17017 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17018 | version checking. */ | |
7ca2d3a3 | 17019 | |
905e0470 PM |
17020 | if (cu->language == language_fortran |
17021 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17022 | { |
17023 | return DW_ORD_row_major; | |
17024 | } | |
17025 | ||
3a3440fb | 17026 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17027 | { |
17028 | case array_column_major: | |
17029 | return DW_ORD_col_major; | |
17030 | case array_row_major: | |
17031 | default: | |
17032 | return DW_ORD_row_major; | |
17033 | }; | |
17034 | } | |
17035 | ||
72019c9c | 17036 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17037 | the DIE's type field. */ |
72019c9c | 17038 | |
f792889a | 17039 | static struct type * |
72019c9c GM |
17040 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17041 | { | |
7e314c57 JK |
17042 | struct type *domain_type, *set_type; |
17043 | struct attribute *attr; | |
f792889a | 17044 | |
7e314c57 JK |
17045 | domain_type = die_type (die, cu); |
17046 | ||
17047 | /* The die_type call above may have already set the type for this DIE. */ | |
17048 | set_type = get_die_type (die, cu); | |
17049 | if (set_type) | |
17050 | return set_type; | |
17051 | ||
17052 | set_type = create_set_type (NULL, domain_type); | |
17053 | ||
17054 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17055 | if (attr != nullptr && attr->form_is_unsigned ()) |
17056 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17057 | |
2b4424c3 TT |
17058 | maybe_set_alignment (cu, die, set_type); |
17059 | ||
f792889a | 17060 | return set_die_type (die, set_type, cu); |
72019c9c | 17061 | } |
7ca2d3a3 | 17062 | |
0971de02 TT |
17063 | /* A helper for read_common_block that creates a locexpr baton. |
17064 | SYM is the symbol which we are marking as computed. | |
17065 | COMMON_DIE is the DIE for the common block. | |
17066 | COMMON_LOC is the location expression attribute for the common | |
17067 | block itself. | |
17068 | MEMBER_LOC is the location expression attribute for the particular | |
17069 | member of the common block that we are processing. | |
17070 | CU is the CU from which the above come. */ | |
17071 | ||
17072 | static void | |
17073 | mark_common_block_symbol_computed (struct symbol *sym, | |
17074 | struct die_info *common_die, | |
17075 | struct attribute *common_loc, | |
17076 | struct attribute *member_loc, | |
17077 | struct dwarf2_cu *cu) | |
17078 | { | |
5e22e966 | 17079 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17080 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17081 | struct dwarf2_locexpr_baton *baton; |
17082 | gdb_byte *ptr; | |
17083 | unsigned int cu_off; | |
08feed99 | 17084 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17085 | LONGEST offset = 0; |
17086 | ||
17087 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17088 | gdb_assert (common_loc->form_is_block ()); |
17089 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17090 | || member_loc->form_is_constant ()); |
0971de02 | 17091 | |
8d749320 | 17092 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17093 | baton->per_objfile = per_objfile; |
0971de02 TT |
17094 | baton->per_cu = cu->per_cu; |
17095 | gdb_assert (baton->per_cu); | |
17096 | ||
17097 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17098 | ||
cd6c91b4 | 17099 | if (member_loc->form_is_constant ()) |
0971de02 | 17100 | { |
0826b30a | 17101 | offset = member_loc->constant_value (0); |
0971de02 TT |
17102 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17103 | } | |
17104 | else | |
9d2246fc | 17105 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17106 | |
224c3ddb | 17107 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17108 | baton->data = ptr; |
17109 | ||
17110 | *ptr++ = DW_OP_call4; | |
9c541725 | 17111 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17112 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17113 | ptr += 4; | |
17114 | ||
cd6c91b4 | 17115 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17116 | { |
17117 | *ptr++ = DW_OP_addr; | |
17118 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17119 | ptr += cu->header.addr_size; | |
17120 | } | |
17121 | else | |
17122 | { | |
17123 | /* We have to copy the data here, because DW_OP_call4 will only | |
17124 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17125 | struct dwarf_block *block = member_loc->as_block (); |
17126 | memcpy (ptr, block->data, block->size); | |
17127 | ptr += block->size; | |
0971de02 TT |
17128 | } |
17129 | ||
17130 | *ptr++ = DW_OP_plus; | |
17131 | gdb_assert (ptr - baton->data == baton->size); | |
17132 | ||
0971de02 | 17133 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17134 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17135 | } |
17136 | ||
4357ac6c TT |
17137 | /* Create appropriate locally-scoped variables for all the |
17138 | DW_TAG_common_block entries. Also create a struct common_block | |
17139 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17140 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17141 | variable names. */ |
c906108c SS |
17142 | |
17143 | static void | |
e7c27a73 | 17144 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17145 | { |
0971de02 TT |
17146 | struct attribute *attr; |
17147 | ||
17148 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17149 | if (attr != nullptr) |
0971de02 TT |
17150 | { |
17151 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17152 | if (attr->form_is_block ()) |
dda83cd7 | 17153 | { |
0971de02 | 17154 | /* Ok. */ |
dda83cd7 | 17155 | } |
cd6c91b4 | 17156 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17157 | { |
0971de02 TT |
17158 | dwarf2_complex_location_expr_complaint (); |
17159 | attr = NULL; | |
dda83cd7 | 17160 | } |
0971de02 | 17161 | else |
dda83cd7 | 17162 | { |
0971de02 TT |
17163 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17164 | "common block member"); | |
17165 | attr = NULL; | |
dda83cd7 | 17166 | } |
0971de02 TT |
17167 | } |
17168 | ||
639d11d3 | 17169 | if (die->child != NULL) |
c906108c | 17170 | { |
5e22e966 | 17171 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17172 | struct die_info *child_die; |
17173 | size_t n_entries = 0, size; | |
17174 | struct common_block *common_block; | |
17175 | struct symbol *sym; | |
74ac6d43 | 17176 | |
4357ac6c TT |
17177 | for (child_die = die->child; |
17178 | child_die && child_die->tag; | |
436c571c | 17179 | child_die = child_die->sibling) |
4357ac6c TT |
17180 | ++n_entries; |
17181 | ||
17182 | size = (sizeof (struct common_block) | |
17183 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17184 | common_block |
17185 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17186 | size); | |
4357ac6c TT |
17187 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17188 | common_block->n_entries = 0; | |
17189 | ||
17190 | for (child_die = die->child; | |
17191 | child_die && child_die->tag; | |
436c571c | 17192 | child_die = child_die->sibling) |
4357ac6c TT |
17193 | { |
17194 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17195 | symbol scope. */ | |
e7c27a73 | 17196 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17197 | if (sym != NULL) |
17198 | { | |
17199 | struct attribute *member_loc; | |
17200 | ||
17201 | common_block->contents[common_block->n_entries++] = sym; | |
17202 | ||
17203 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17204 | cu); | |
17205 | if (member_loc) | |
17206 | { | |
17207 | /* GDB has handled this for a long time, but it is | |
17208 | not specified by DWARF. It seems to have been | |
17209 | emitted by gfortran at least as recently as: | |
17210 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17211 | complaint (_("Variable in common block has " |
0971de02 | 17212 | "DW_AT_data_member_location " |
9d8780f0 SM |
17213 | "- DIE at %s [in module %s]"), |
17214 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17215 | objfile_name (objfile)); |
0971de02 | 17216 | |
cd6c91b4 | 17217 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17218 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17219 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17220 | || member_loc->form_is_block ()) |
0971de02 | 17221 | { |
435d3d88 | 17222 | if (attr != nullptr) |
0971de02 TT |
17223 | mark_common_block_symbol_computed (sym, die, attr, |
17224 | member_loc, cu); | |
17225 | } | |
17226 | else | |
17227 | dwarf2_complex_location_expr_complaint (); | |
17228 | } | |
17229 | } | |
c906108c | 17230 | } |
4357ac6c TT |
17231 | |
17232 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17233 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17234 | } |
17235 | } | |
17236 | ||
0114d602 | 17237 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17238 | |
0114d602 DJ |
17239 | static struct type * |
17240 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17241 | { |
5e22e966 | 17242 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17243 | const char *previous_prefix, *name; |
9219021c | 17244 | int is_anonymous; |
0114d602 DJ |
17245 | struct type *type; |
17246 | ||
17247 | /* For extensions, reuse the type of the original namespace. */ | |
17248 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17249 | { | |
17250 | struct die_info *ext_die; | |
17251 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17252 | |
0114d602 DJ |
17253 | ext_die = dwarf2_extension (die, &ext_cu); |
17254 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17255 | |
17256 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17257 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17258 | return set_die_type (die, type, cu); |
17259 | } | |
9219021c | 17260 | |
e142c38c | 17261 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17262 | |
17263 | /* Now build the name of the current namespace. */ | |
17264 | ||
0114d602 DJ |
17265 | previous_prefix = determine_prefix (die, cu); |
17266 | if (previous_prefix[0] != '\0') | |
17267 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17268 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17269 | |
17270 | /* Create the type. */ | |
19f392bc | 17271 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17272 | |
60531b24 | 17273 | return set_die_type (die, type, cu); |
0114d602 DJ |
17274 | } |
17275 | ||
22cee43f | 17276 | /* Read a namespace scope. */ |
0114d602 DJ |
17277 | |
17278 | static void | |
17279 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17280 | { | |
5e22e966 | 17281 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17282 | int is_anonymous; |
9219021c | 17283 | |
5c4e30ca DC |
17284 | /* Add a symbol associated to this if we haven't seen the namespace |
17285 | before. Also, add a using directive if it's an anonymous | |
17286 | namespace. */ | |
9219021c | 17287 | |
f2f0e013 | 17288 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17289 | { |
17290 | struct type *type; | |
17291 | ||
0114d602 | 17292 | type = read_type_die (die, cu); |
e7c27a73 | 17293 | new_symbol (die, type, cu); |
5c4e30ca | 17294 | |
e8e80198 | 17295 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17296 | if (is_anonymous) |
0114d602 DJ |
17297 | { |
17298 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17299 | |
eb1e02fd | 17300 | std::vector<const char *> excludes; |
804d2729 | 17301 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17302 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17303 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17304 | } |
5c4e30ca | 17305 | } |
9219021c | 17306 | |
639d11d3 | 17307 | if (die->child != NULL) |
d9fa45fe | 17308 | { |
639d11d3 | 17309 | struct die_info *child_die = die->child; |
6e70227d | 17310 | |
d9fa45fe DC |
17311 | while (child_die && child_die->tag) |
17312 | { | |
e7c27a73 | 17313 | process_die (child_die, cu); |
436c571c | 17314 | child_die = child_die->sibling; |
d9fa45fe DC |
17315 | } |
17316 | } | |
38d518c9 EZ |
17317 | } |
17318 | ||
f55ee35c JK |
17319 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17320 | imported module. Still we need that type as local Fortran "use ... only" | |
17321 | declaration imports depend on the created type in determine_prefix. */ | |
17322 | ||
17323 | static struct type * | |
17324 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17325 | { | |
5e22e966 | 17326 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17327 | const char *module_name; |
f55ee35c JK |
17328 | struct type *type; |
17329 | ||
17330 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17331 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17332 | |
f55ee35c JK |
17333 | return set_die_type (die, type, cu); |
17334 | } | |
17335 | ||
5d7cb8df JK |
17336 | /* Read a Fortran module. */ |
17337 | ||
17338 | static void | |
17339 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17340 | { | |
17341 | struct die_info *child_die = die->child; | |
530e8392 KB |
17342 | struct type *type; |
17343 | ||
17344 | type = read_type_die (die, cu); | |
17345 | new_symbol (die, type, cu); | |
5d7cb8df | 17346 | |
5d7cb8df JK |
17347 | while (child_die && child_die->tag) |
17348 | { | |
17349 | process_die (child_die, cu); | |
436c571c | 17350 | child_die = child_die->sibling; |
5d7cb8df JK |
17351 | } |
17352 | } | |
17353 | ||
38d518c9 EZ |
17354 | /* Return the name of the namespace represented by DIE. Set |
17355 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17356 | namespace. */ | |
17357 | ||
17358 | static const char * | |
e142c38c | 17359 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17360 | { |
17361 | struct die_info *current_die; | |
17362 | const char *name = NULL; | |
17363 | ||
17364 | /* Loop through the extensions until we find a name. */ | |
17365 | ||
17366 | for (current_die = die; | |
17367 | current_die != NULL; | |
f2f0e013 | 17368 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17369 | { |
96553a0c DE |
17370 | /* We don't use dwarf2_name here so that we can detect the absence |
17371 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17372 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17373 | |
38d518c9 EZ |
17374 | if (name != NULL) |
17375 | break; | |
17376 | } | |
17377 | ||
17378 | /* Is it an anonymous namespace? */ | |
17379 | ||
17380 | *is_anonymous = (name == NULL); | |
17381 | if (*is_anonymous) | |
2b1dbab0 | 17382 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17383 | |
17384 | return name; | |
d9fa45fe DC |
17385 | } |
17386 | ||
c906108c SS |
17387 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17388 | the user defined type vector. */ | |
17389 | ||
f792889a | 17390 | static struct type * |
e7c27a73 | 17391 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17392 | { |
5e22e966 | 17393 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17394 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17395 | struct type *type; |
8b2dbe47 KB |
17396 | struct attribute *attr_byte_size; |
17397 | struct attribute *attr_address_class; | |
17398 | int byte_size, addr_class; | |
7e314c57 JK |
17399 | struct type *target_type; |
17400 | ||
17401 | target_type = die_type (die, cu); | |
c906108c | 17402 | |
7e314c57 JK |
17403 | /* The die_type call above may have already set the type for this DIE. */ |
17404 | type = get_die_type (die, cu); | |
17405 | if (type) | |
17406 | return type; | |
17407 | ||
17408 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17409 | |
e142c38c | 17410 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17411 | if (attr_byte_size) |
529908cb | 17412 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17413 | else |
8b2dbe47 KB |
17414 | byte_size = cu_header->addr_size; |
17415 | ||
e142c38c | 17416 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17417 | if (attr_address_class) |
529908cb | 17418 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17419 | else |
17420 | addr_class = DW_ADDR_none; | |
17421 | ||
2b4424c3 TT |
17422 | ULONGEST alignment = get_alignment (cu, die); |
17423 | ||
17424 | /* If the pointer size, alignment, or address class is different | |
17425 | than the default, create a type variant marked as such and set | |
17426 | the length accordingly. */ | |
17427 | if (TYPE_LENGTH (type) != byte_size | |
17428 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17429 | && alignment != TYPE_RAW_ALIGN (type)) | |
17430 | || addr_class != DW_ADDR_none) | |
c906108c | 17431 | { |
5e2b427d | 17432 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17433 | { |
314ad88d PA |
17434 | type_instance_flags type_flags |
17435 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17436 | addr_class); | |
876cecd0 TT |
17437 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17438 | == 0); | |
8b2dbe47 KB |
17439 | type = make_type_with_address_space (type, type_flags); |
17440 | } | |
17441 | else if (TYPE_LENGTH (type) != byte_size) | |
17442 | { | |
b98664d3 | 17443 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17444 | } |
2b4424c3 TT |
17445 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17446 | { | |
b98664d3 | 17447 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17448 | " - DIE at %s [in module %s]"), |
17449 | sect_offset_str (die->sect_off), | |
5e22e966 | 17450 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17451 | } |
6e70227d | 17452 | else |
9a619af0 MS |
17453 | { |
17454 | /* Should we also complain about unhandled address classes? */ | |
17455 | } | |
c906108c | 17456 | } |
8b2dbe47 KB |
17457 | |
17458 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17459 | set_type_align (type, alignment); |
f792889a | 17460 | return set_die_type (die, type, cu); |
c906108c SS |
17461 | } |
17462 | ||
17463 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17464 | the user defined type vector. */ | |
17465 | ||
f792889a | 17466 | static struct type * |
e7c27a73 | 17467 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17468 | { |
17469 | struct type *type; | |
17470 | struct type *to_type; | |
17471 | struct type *domain; | |
17472 | ||
e7c27a73 DJ |
17473 | to_type = die_type (die, cu); |
17474 | domain = die_containing_type (die, cu); | |
0d5de010 | 17475 | |
7e314c57 JK |
17476 | /* The calls above may have already set the type for this DIE. */ |
17477 | type = get_die_type (die, cu); | |
17478 | if (type) | |
17479 | return type; | |
17480 | ||
78134374 | 17481 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17482 | type = lookup_methodptr_type (to_type); |
78134374 | 17483 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17484 | { |
5e22e966 | 17485 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17486 | |
17487 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17488 | to_type->fields (), to_type->num_fields (), |
a409645d | 17489 | to_type->has_varargs ()); |
7078baeb TT |
17490 | type = lookup_methodptr_type (new_type); |
17491 | } | |
0d5de010 DJ |
17492 | else |
17493 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17494 | |
f792889a | 17495 | return set_die_type (die, type, cu); |
c906108c SS |
17496 | } |
17497 | ||
4297a3f0 | 17498 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17499 | the user defined type vector. */ |
17500 | ||
f792889a | 17501 | static struct type * |
4297a3f0 | 17502 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17503 | enum type_code refcode) |
c906108c | 17504 | { |
e7c27a73 | 17505 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17506 | struct type *type, *target_type; |
c906108c SS |
17507 | struct attribute *attr; |
17508 | ||
4297a3f0 AV |
17509 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17510 | ||
7e314c57 JK |
17511 | target_type = die_type (die, cu); |
17512 | ||
17513 | /* The die_type call above may have already set the type for this DIE. */ | |
17514 | type = get_die_type (die, cu); | |
17515 | if (type) | |
17516 | return type; | |
17517 | ||
4297a3f0 | 17518 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17519 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17520 | if (attr != nullptr) |
c906108c | 17521 | { |
529908cb | 17522 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17523 | } |
17524 | else | |
17525 | { | |
107d2387 | 17526 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17527 | } |
2b4424c3 | 17528 | maybe_set_alignment (cu, die, type); |
f792889a | 17529 | return set_die_type (die, type, cu); |
c906108c SS |
17530 | } |
17531 | ||
cf363f18 MW |
17532 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17533 | outputs DWARF type qualifiers that apply to an array, not the | |
17534 | element type. But GDB relies on the array element type to carry | |
17535 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17536 | specification. */ | |
17537 | ||
17538 | static struct type * | |
17539 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17540 | struct type *base_type, int cnst, int voltl) | |
17541 | { | |
17542 | struct type *el_type, *inner_array; | |
17543 | ||
17544 | base_type = copy_type (base_type); | |
17545 | inner_array = base_type; | |
17546 | ||
78134374 | 17547 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17548 | { |
17549 | TYPE_TARGET_TYPE (inner_array) = | |
17550 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17551 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17552 | } | |
17553 | ||
17554 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17555 | cnst |= TYPE_CONST (el_type); | |
17556 | voltl |= TYPE_VOLATILE (el_type); | |
17557 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17558 | ||
17559 | return set_die_type (die, base_type, cu); | |
17560 | } | |
17561 | ||
f792889a | 17562 | static struct type * |
e7c27a73 | 17563 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17564 | { |
f792889a | 17565 | struct type *base_type, *cv_type; |
c906108c | 17566 | |
e7c27a73 | 17567 | base_type = die_type (die, cu); |
7e314c57 JK |
17568 | |
17569 | /* The die_type call above may have already set the type for this DIE. */ | |
17570 | cv_type = get_die_type (die, cu); | |
17571 | if (cv_type) | |
17572 | return cv_type; | |
17573 | ||
2f608a3a KW |
17574 | /* In case the const qualifier is applied to an array type, the element type |
17575 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17576 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17577 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17578 | |
f792889a DJ |
17579 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17580 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17581 | } |
17582 | ||
f792889a | 17583 | static struct type * |
e7c27a73 | 17584 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17585 | { |
f792889a | 17586 | struct type *base_type, *cv_type; |
c906108c | 17587 | |
e7c27a73 | 17588 | base_type = die_type (die, cu); |
7e314c57 JK |
17589 | |
17590 | /* The die_type call above may have already set the type for this DIE. */ | |
17591 | cv_type = get_die_type (die, cu); | |
17592 | if (cv_type) | |
17593 | return cv_type; | |
17594 | ||
cf363f18 MW |
17595 | /* In case the volatile qualifier is applied to an array type, the |
17596 | element type is so qualified, not the array type (section 6.7.3 | |
17597 | of C99). */ | |
78134374 | 17598 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17599 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17600 | ||
f792889a DJ |
17601 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17602 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17603 | } |
17604 | ||
06d66ee9 TT |
17605 | /* Handle DW_TAG_restrict_type. */ |
17606 | ||
17607 | static struct type * | |
17608 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17609 | { | |
17610 | struct type *base_type, *cv_type; | |
17611 | ||
17612 | base_type = die_type (die, cu); | |
17613 | ||
17614 | /* The die_type call above may have already set the type for this DIE. */ | |
17615 | cv_type = get_die_type (die, cu); | |
17616 | if (cv_type) | |
17617 | return cv_type; | |
17618 | ||
17619 | cv_type = make_restrict_type (base_type); | |
17620 | return set_die_type (die, cv_type, cu); | |
17621 | } | |
17622 | ||
a2c2acaf MW |
17623 | /* Handle DW_TAG_atomic_type. */ |
17624 | ||
17625 | static struct type * | |
17626 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17627 | { | |
17628 | struct type *base_type, *cv_type; | |
17629 | ||
17630 | base_type = die_type (die, cu); | |
17631 | ||
17632 | /* The die_type call above may have already set the type for this DIE. */ | |
17633 | cv_type = get_die_type (die, cu); | |
17634 | if (cv_type) | |
17635 | return cv_type; | |
17636 | ||
17637 | cv_type = make_atomic_type (base_type); | |
17638 | return set_die_type (die, cv_type, cu); | |
17639 | } | |
17640 | ||
c906108c SS |
17641 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17642 | the user defined type vector. It isn't really a user defined type, | |
17643 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17644 | attribute to reference it. */ | |
17645 | ||
f792889a | 17646 | static struct type * |
e7c27a73 | 17647 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17648 | { |
5e22e966 | 17649 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17650 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17651 | struct type *type, *range_type, *index_type, *char_type; |
17652 | struct attribute *attr; | |
216a7e6b AB |
17653 | struct dynamic_prop prop; |
17654 | bool length_is_constant = true; | |
17655 | LONGEST length; | |
17656 | ||
17657 | /* There are a couple of places where bit sizes might be made use of | |
17658 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17659 | of make use of these. Handling bit sizes that are a multiple of the | |
17660 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17661 | with that problem when we have to. Warn about these attributes being | |
17662 | unsupported, then parse the type and ignore them like we always | |
17663 | have. */ | |
17664 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17665 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17666 | { | |
17667 | static bool warning_printed = false; | |
17668 | if (!warning_printed) | |
17669 | { | |
17670 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17671 | "currently supported on DW_TAG_string_type.")); | |
17672 | warning_printed = true; | |
17673 | } | |
17674 | } | |
c906108c | 17675 | |
e142c38c | 17676 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17677 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17678 | { |
17679 | /* The string length describes the location at which the length of | |
17680 | the string can be found. The size of the length field can be | |
17681 | specified with one of the attributes below. */ | |
17682 | struct type *prop_type; | |
17683 | struct attribute *len | |
17684 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17685 | if (len == nullptr) | |
17686 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17687 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17688 | { |
17689 | /* Pass 0 as the default as we know this attribute is constant | |
17690 | and the default value will not be returned. */ | |
0826b30a | 17691 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17692 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17693 | } |
17694 | else | |
17695 | { | |
17696 | /* If the size is not specified then we assume it is the size of | |
17697 | an address on this target. */ | |
293e7e51 | 17698 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17699 | } |
17700 | ||
17701 | /* Convert the attribute into a dynamic property. */ | |
17702 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17703 | length = 1; | |
17704 | else | |
17705 | length_is_constant = false; | |
17706 | } | |
17707 | else if (attr != nullptr) | |
17708 | { | |
17709 | /* This DW_AT_string_length just contains the length with no | |
17710 | indirection. There's no need to create a dynamic property in this | |
17711 | case. Pass 0 for the default value as we know it will not be | |
17712 | returned in this case. */ | |
0826b30a | 17713 | length = attr->constant_value (0); |
216a7e6b AB |
17714 | } |
17715 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17716 | { |
216a7e6b | 17717 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17718 | length = attr->constant_value (1); |
c906108c SS |
17719 | } |
17720 | else | |
17721 | { | |
216a7e6b AB |
17722 | /* Use 1 as a fallback length if we have nothing else. */ |
17723 | length = 1; | |
c906108c | 17724 | } |
6ccb9162 | 17725 | |
46bf5051 | 17726 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17727 | if (length_is_constant) |
17728 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17729 | else | |
17730 | { | |
17731 | struct dynamic_prop low_bound; | |
17732 | ||
8c2e4e06 | 17733 | low_bound.set_const_val (1); |
216a7e6b AB |
17734 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17735 | } | |
3b7538c0 UW |
17736 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17737 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17738 | |
f792889a | 17739 | return set_die_type (die, type, cu); |
c906108c SS |
17740 | } |
17741 | ||
4d804846 JB |
17742 | /* Assuming that DIE corresponds to a function, returns nonzero |
17743 | if the function is prototyped. */ | |
17744 | ||
17745 | static int | |
17746 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17747 | { | |
17748 | struct attribute *attr; | |
17749 | ||
17750 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17751 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17752 | return 1; |
17753 | ||
17754 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17755 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17756 | languages that allow unprototyped functions (Eg: Objective C). |
17757 | For all other languages, assume that functions are always | |
17758 | prototyped. */ | |
17759 | if (cu->language != language_c | |
17760 | && cu->language != language_objc | |
17761 | && cu->language != language_opencl) | |
17762 | return 1; | |
17763 | ||
17764 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17765 | prototyped and unprototyped functions; default to prototyped, | |
17766 | since that is more common in modern code (and RealView warns | |
17767 | about unprototyped functions). */ | |
17768 | if (producer_is_realview (cu->producer)) | |
17769 | return 1; | |
17770 | ||
17771 | return 0; | |
17772 | } | |
17773 | ||
c906108c SS |
17774 | /* Handle DIES due to C code like: |
17775 | ||
17776 | struct foo | |
c5aa993b JM |
17777 | { |
17778 | int (*funcp)(int a, long l); | |
17779 | int b; | |
17780 | }; | |
c906108c | 17781 | |
0963b4bd | 17782 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17783 | |
f792889a | 17784 | static struct type * |
e7c27a73 | 17785 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17786 | { |
5e22e966 | 17787 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17788 | struct type *type; /* Type that this function returns. */ |
17789 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17790 | struct attribute *attr; |
17791 | ||
e7c27a73 | 17792 | type = die_type (die, cu); |
7e314c57 JK |
17793 | |
17794 | /* The die_type call above may have already set the type for this DIE. */ | |
17795 | ftype = get_die_type (die, cu); | |
17796 | if (ftype) | |
17797 | return ftype; | |
17798 | ||
0c8b41f1 | 17799 | ftype = lookup_function_type (type); |
c906108c | 17800 | |
4d804846 | 17801 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17802 | ftype->set_is_prototyped (true); |
c906108c | 17803 | |
c055b101 CV |
17804 | /* Store the calling convention in the type if it's available in |
17805 | the subroutine die. Otherwise set the calling convention to | |
17806 | the default value DW_CC_normal. */ | |
17807 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 17808 | if (attr != nullptr |
529908cb | 17809 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 17810 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 17811 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
17812 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17813 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17814 | else | |
17815 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17816 | |
743649fd MW |
17817 | /* Record whether the function returns normally to its caller or not |
17818 | if the DWARF producer set that information. */ | |
17819 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 17820 | if (attr && attr->as_boolean ()) |
743649fd MW |
17821 | TYPE_NO_RETURN (ftype) = 1; |
17822 | ||
76c10ea2 GM |
17823 | /* We need to add the subroutine type to the die immediately so |
17824 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17825 | declared as the same subroutine type. */ |
76c10ea2 | 17826 | set_die_type (die, ftype, cu); |
6e70227d | 17827 | |
639d11d3 | 17828 | if (die->child != NULL) |
c906108c | 17829 | { |
bb5ed363 | 17830 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17831 | struct die_info *child_die; |
8072405b | 17832 | int nparams, iparams; |
c906108c SS |
17833 | |
17834 | /* Count the number of parameters. | |
dda83cd7 SM |
17835 | FIXME: GDB currently ignores vararg functions, but knows about |
17836 | vararg member functions. */ | |
8072405b | 17837 | nparams = 0; |
639d11d3 | 17838 | child_die = die->child; |
c906108c SS |
17839 | while (child_die && child_die->tag) |
17840 | { | |
17841 | if (child_die->tag == DW_TAG_formal_parameter) | |
17842 | nparams++; | |
17843 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17844 | ftype->set_has_varargs (true); |
17845 | ||
436c571c | 17846 | child_die = child_die->sibling; |
c906108c SS |
17847 | } |
17848 | ||
17849 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17850 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17851 | ftype->set_fields |
17852 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17853 | |
8072405b JK |
17854 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17855 | even if we error out during the parameters reading below. */ | |
17856 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17857 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17858 | |
17859 | iparams = 0; | |
639d11d3 | 17860 | child_die = die->child; |
c906108c SS |
17861 | while (child_die && child_die->tag) |
17862 | { | |
17863 | if (child_die->tag == DW_TAG_formal_parameter) | |
17864 | { | |
3ce3b1ba PA |
17865 | struct type *arg_type; |
17866 | ||
17867 | /* DWARF version 2 has no clean way to discern C++ | |
17868 | static and non-static member functions. G++ helps | |
17869 | GDB by marking the first parameter for non-static | |
17870 | member functions (which is the this pointer) as | |
17871 | artificial. We pass this information to | |
17872 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17873 | ||
17874 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17875 | 4.5 does not yet generate. */ | |
e142c38c | 17876 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17877 | if (attr != nullptr) |
c45bc3f8 | 17878 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 17879 | else |
9c37b5ae | 17880 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17881 | arg_type = die_type (child_die, cu); |
17882 | ||
17883 | /* RealView does not mark THIS as const, which the testsuite | |
17884 | expects. GCC marks THIS as const in method definitions, | |
17885 | but not in the class specifications (GCC PR 43053). */ | |
17886 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17887 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17888 | { | |
17889 | int is_this = 0; | |
17890 | struct dwarf2_cu *arg_cu = cu; | |
17891 | const char *name = dwarf2_name (child_die, cu); | |
17892 | ||
17893 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17894 | if (attr != nullptr) |
3ce3b1ba PA |
17895 | { |
17896 | /* If the compiler emits this, use it. */ | |
17897 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17898 | is_this = 1; | |
17899 | } | |
17900 | else if (name && strcmp (name, "this") == 0) | |
17901 | /* Function definitions will have the argument names. */ | |
17902 | is_this = 1; | |
17903 | else if (name == NULL && iparams == 0) | |
17904 | /* Declarations may not have the names, so like | |
17905 | elsewhere in GDB, assume an artificial first | |
17906 | argument is "this". */ | |
17907 | is_this = 1; | |
17908 | ||
17909 | if (is_this) | |
17910 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17911 | arg_type, 0); | |
17912 | } | |
17913 | ||
5d14b6e5 | 17914 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17915 | iparams++; |
17916 | } | |
436c571c | 17917 | child_die = child_die->sibling; |
c906108c SS |
17918 | } |
17919 | } | |
17920 | ||
76c10ea2 | 17921 | return ftype; |
c906108c SS |
17922 | } |
17923 | ||
f792889a | 17924 | static struct type * |
e7c27a73 | 17925 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17926 | { |
5e22e966 | 17927 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17928 | const char *name = NULL; |
3c8e0968 | 17929 | struct type *this_type, *target_type; |
c906108c | 17930 | |
94af9270 | 17931 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 17932 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 17933 | this_type->set_target_is_stub (true); |
f792889a | 17934 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17935 | target_type = die_type (die, cu); |
17936 | if (target_type != this_type) | |
17937 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17938 | else | |
17939 | { | |
17940 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17941 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17942 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17943 | "- DIE at %s [in module %s]"), |
17944 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17945 | TYPE_TARGET_TYPE (this_type) = NULL; |
17946 | } | |
e4003a34 TV |
17947 | if (name == NULL) |
17948 | { | |
17949 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17950 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17951 | Handle these by just returning the target type, rather than | |
17952 | constructing an anonymous typedef type and trying to handle this | |
17953 | elsewhere. */ | |
17954 | set_die_type (die, target_type, cu); | |
17955 | return target_type; | |
17956 | } | |
f792889a | 17957 | return this_type; |
c906108c SS |
17958 | } |
17959 | ||
a625a8c9 TT |
17960 | /* Helper for get_dwarf2_rational_constant that computes the value of |
17961 | a given gmp_mpz given an attribute. */ | |
17962 | ||
17963 | static void | |
17964 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
17965 | { | |
17966 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
17967 | location expression that pushes an implicit value. */ | |
17968 | if (attr->form == DW_FORM_exprloc) | |
17969 | { | |
17970 | dwarf_block *blk = attr->as_block (); | |
17971 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
17972 | { | |
17973 | uint64_t len; | |
17974 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
17975 | blk->data + blk->size, | |
17976 | &len); | |
17977 | if (ptr - blk->data + len <= blk->size) | |
17978 | { | |
17979 | mpz_import (value->val, len, | |
17980 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17981 | 1, 0, 0, ptr); | |
17982 | return; | |
17983 | } | |
17984 | } | |
17985 | ||
17986 | /* On failure set it to 1. */ | |
17987 | *value = gdb_mpz (1); | |
17988 | } | |
17989 | else if (attr->form_is_block ()) | |
17990 | { | |
17991 | dwarf_block *blk = attr->as_block (); | |
17992 | mpz_import (value->val, blk->size, | |
17993 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17994 | 1, 0, 0, blk->data); | |
17995 | } | |
17996 | else | |
17997 | *value = gdb_mpz (attr->constant_value (1)); | |
17998 | } | |
17999 | ||
09584414 JB |
18000 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18001 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18002 | ||
18003 | If the numerator and/or numerator attribute is missing, | |
18004 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18005 | untouched. */ | |
18006 | ||
18007 | static void | |
18008 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 18009 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
18010 | { |
18011 | struct attribute *num_attr, *denom_attr; | |
18012 | ||
18013 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18014 | if (num_attr == nullptr) | |
18015 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18016 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18017 | ||
18018 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18019 | if (denom_attr == nullptr) | |
18020 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18021 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18022 | ||
18023 | if (num_attr == nullptr || denom_attr == nullptr) | |
18024 | return; | |
18025 | ||
a625a8c9 TT |
18026 | get_mpz (cu, numerator, num_attr); |
18027 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
18028 | } |
18029 | ||
18030 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18031 | rational constant, rather than a signed one. | |
18032 | ||
18033 | If the rational constant has a negative value, a complaint | |
18034 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18035 | ||
18036 | static void | |
18037 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18038 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
18039 | gdb_mpz *numerator, |
18040 | gdb_mpz *denominator) | |
09584414 | 18041 | { |
5cde1d82 TT |
18042 | gdb_mpz num (1); |
18043 | gdb_mpz denom (1); | |
09584414 JB |
18044 | |
18045 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 18046 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 18047 | { |
5cde1d82 TT |
18048 | mpz_neg (num.val, num.val); |
18049 | mpz_neg (denom.val, denom.val); | |
09584414 | 18050 | } |
5cde1d82 | 18051 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
18052 | { |
18053 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18054 | " in DIE at %s"), | |
18055 | sect_offset_str (die->sect_off)); | |
18056 | return; | |
18057 | } | |
5cde1d82 | 18058 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
18059 | { |
18060 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18061 | " in DIE at %s"), | |
18062 | sect_offset_str (die->sect_off)); | |
18063 | return; | |
18064 | } | |
18065 | ||
5cde1d82 TT |
18066 | *numerator = std::move (num); |
18067 | *denominator = std::move (denom); | |
09584414 JB |
18068 | } |
18069 | ||
bbcdf9ab TT |
18070 | /* Assuming that ENCODING is a string whose contents starting at the |
18071 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
18072 | number and set RESULT to the value. K is updated to point to the | |
18073 | character immediately following the number. | |
18074 | ||
18075 | If the string does not conform to the format described above, false | |
18076 | is returned, and K may or may not be changed. */ | |
18077 | ||
18078 | static bool | |
18079 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
18080 | { | |
18081 | /* The next character should be an underscore ('_') followed | |
18082 | by a digit. */ | |
18083 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
18084 | return false; | |
18085 | ||
18086 | /* Skip the underscore. */ | |
18087 | k++; | |
18088 | int start = k; | |
18089 | ||
18090 | /* Determine the number of digits for our number. */ | |
18091 | while (isdigit (encoding[k])) | |
18092 | k++; | |
18093 | if (k == start) | |
18094 | return false; | |
18095 | ||
18096 | std::string copy (&encoding[start], k - start); | |
18097 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
18098 | return false; | |
18099 | ||
18100 | return true; | |
18101 | } | |
18102 | ||
18103 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
18104 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
18105 | DENOM, update OFFSET, and return true on success. Return false on | |
18106 | failure. */ | |
18107 | ||
18108 | static bool | |
18109 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
18110 | gdb_mpz *num, gdb_mpz *denom) | |
18111 | { | |
18112 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
18113 | return false; | |
18114 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
18115 | } | |
18116 | ||
09584414 | 18117 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
18118 | of the corresponding TYPE by setting its type-specific data. CU is |
18119 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
18120 | encodings. It is nullptr if the GNAT encoding should be | |
18121 | ignored. */ | |
09584414 JB |
18122 | |
18123 | static void | |
bbcdf9ab TT |
18124 | finish_fixed_point_type (struct type *type, const char *suffix, |
18125 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 18126 | { |
09584414 JB |
18127 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
18128 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18129 | ||
bbcdf9ab TT |
18130 | /* If GNAT encodings are preferred, don't examine the |
18131 | attributes. */ | |
18132 | struct attribute *attr = nullptr; | |
18133 | if (suffix == nullptr) | |
18134 | { | |
18135 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18136 | if (attr == nullptr) | |
18137 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18138 | if (attr == nullptr) | |
18139 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18140 | } | |
09584414 | 18141 | |
5cde1d82 TT |
18142 | /* Numerator and denominator of our fixed-point type's scaling factor. |
18143 | The default is a scaling factor of 1, which we use as a fallback | |
18144 | when we are not able to decode it (problem with the debugging info, | |
18145 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18146 | allows us to at least print the unscaled value, which might still | |
18147 | be useful to a user. */ | |
18148 | gdb_mpz scale_num (1); | |
18149 | gdb_mpz scale_denom (1); | |
18150 | ||
09584414 JB |
18151 | if (attr == nullptr) |
18152 | { | |
bbcdf9ab TT |
18153 | int offset = 0; |
18154 | if (suffix != nullptr | |
18155 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18156 | &scale_denom) | |
18157 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18158 | second ratio is the 'small value. In this situation, we | |
18159 | want the second value. */ | |
18160 | && (suffix[offset] != '_' | |
18161 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18162 | &scale_denom))) | |
18163 | { | |
18164 | /* Found it. */ | |
18165 | } | |
18166 | else | |
18167 | { | |
18168 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18169 | and hope for the best. At least the user will be able to | |
18170 | see the encoded value. */ | |
18171 | scale_num = 1; | |
18172 | scale_denom = 1; | |
18173 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18174 | sect_offset_str (die->sect_off)); | |
18175 | } | |
09584414 JB |
18176 | } |
18177 | else if (attr->name == DW_AT_binary_scale) | |
18178 | { | |
18179 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18180 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18181 | |
5cde1d82 | 18182 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18183 | } |
18184 | else if (attr->name == DW_AT_decimal_scale) | |
18185 | { | |
18186 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18187 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18188 | |
5cde1d82 | 18189 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18190 | } |
18191 | else if (attr->name == DW_AT_small) | |
18192 | { | |
18193 | struct die_info *scale_die; | |
18194 | struct dwarf2_cu *scale_cu = cu; | |
18195 | ||
18196 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18197 | if (scale_die->tag == DW_TAG_constant) | |
18198 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18199 | &scale_num, &scale_denom); | |
18200 | else | |
18201 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18202 | " (DIE at %s)"), | |
18203 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18204 | } | |
18205 | else | |
18206 | { | |
18207 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18208 | " (DIE at %s)"), | |
18209 | dwarf_attr_name (attr->name), | |
18210 | sect_offset_str (die->sect_off)); | |
18211 | } | |
18212 | ||
2a12c336 | 18213 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18214 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18215 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18216 | mpq_canonicalize (scaling_factor.val); |
18217 | } | |
18218 | ||
bbcdf9ab TT |
18219 | /* The gnat-encoding suffix for fixed point. */ |
18220 | ||
18221 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18222 | ||
18223 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18224 | "XF" suffix of the name. The text after this is what encodes the | |
18225 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18226 | ||
18227 | static const char * | |
18228 | gnat_encoded_fixed_point_type_info (const char *name) | |
18229 | { | |
18230 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18231 | } | |
18232 | ||
9b790ce7 UW |
18233 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18234 | (which may be different from NAME) to the architecture back-end to allow | |
18235 | it to guess the correct format if necessary. */ | |
18236 | ||
18237 | static struct type * | |
18238 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18239 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18240 | { |
08feed99 | 18241 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18242 | const struct floatformat **format; |
18243 | struct type *type; | |
18244 | ||
18245 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18246 | if (format) | |
103a685e | 18247 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18248 | else |
77b7c781 | 18249 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18250 | |
18251 | return type; | |
18252 | } | |
18253 | ||
eb77c9df AB |
18254 | /* Allocate an integer type of size BITS and name NAME. */ |
18255 | ||
18256 | static struct type * | |
18257 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18258 | int bits, int unsigned_p, const char *name) | |
18259 | { | |
18260 | struct type *type; | |
18261 | ||
18262 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18263 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18264 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18265 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18266 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18267 | type = objfile_type (objfile)->builtin_void; |
18268 | else | |
18269 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18270 | ||
18271 | return type; | |
18272 | } | |
18273 | ||
09584414 JB |
18274 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18275 | a constant rational, where both the numerator and denominator | |
18276 | are equal to zero. | |
18277 | ||
18278 | CU is the DIE's Compilation Unit. */ | |
18279 | ||
18280 | static bool | |
18281 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18282 | struct dwarf2_cu *cu) | |
18283 | { | |
18284 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18285 | if (attr == nullptr) | |
18286 | return false; | |
18287 | ||
18288 | struct dwarf2_cu *scale_cu = cu; | |
18289 | struct die_info *scale_die | |
18290 | = follow_die_ref (die, attr, &scale_cu); | |
18291 | ||
18292 | if (scale_die->tag != DW_TAG_constant) | |
18293 | return false; | |
18294 | ||
5cde1d82 | 18295 | gdb_mpz num (1), denom (1); |
09584414 | 18296 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18297 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18298 | } |
18299 | ||
8bdc1658 AB |
18300 | /* Initialise and return a floating point type of size BITS suitable for |
18301 | use as a component of a complex number. The NAME_HINT is passed through | |
18302 | when initialising the floating point type and is the name of the complex | |
18303 | type. | |
18304 | ||
18305 | As DWARF doesn't currently provide an explicit name for the components | |
18306 | of a complex number, but it can be helpful to have these components | |
18307 | named, we try to select a suitable name based on the size of the | |
18308 | component. */ | |
18309 | static struct type * | |
18310 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18311 | struct objfile *objfile, | |
103a685e TT |
18312 | int bits, const char *name_hint, |
18313 | enum bfd_endian byte_order) | |
8bdc1658 | 18314 | { |
08feed99 | 18315 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18316 | struct type *tt = nullptr; |
18317 | ||
35add35e AB |
18318 | /* Try to find a suitable floating point builtin type of size BITS. |
18319 | We're going to use the name of this type as the name for the complex | |
18320 | target type that we are about to create. */ | |
1db455a7 | 18321 | switch (cu->language) |
8bdc1658 | 18322 | { |
1db455a7 AB |
18323 | case language_fortran: |
18324 | switch (bits) | |
18325 | { | |
18326 | case 32: | |
18327 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18328 | break; | |
18329 | case 64: | |
18330 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18331 | break; | |
18332 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18333 | case 128: | |
18334 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18335 | break; | |
18336 | } | |
8bdc1658 | 18337 | break; |
1db455a7 AB |
18338 | default: |
18339 | switch (bits) | |
18340 | { | |
18341 | case 32: | |
18342 | tt = builtin_type (gdbarch)->builtin_float; | |
18343 | break; | |
18344 | case 64: | |
18345 | tt = builtin_type (gdbarch)->builtin_double; | |
18346 | break; | |
18347 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18348 | case 128: | |
18349 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18350 | break; | |
18351 | } | |
8bdc1658 AB |
18352 | break; |
18353 | } | |
18354 | ||
35add35e AB |
18355 | /* If the type we found doesn't match the size we were looking for, then |
18356 | pretend we didn't find a type at all, the complex target type we | |
18357 | create will then be nameless. */ | |
a12e5744 | 18358 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18359 | tt = nullptr; |
18360 | ||
7d93a1e0 | 18361 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18362 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18363 | } |
18364 | ||
c906108c SS |
18365 | /* Find a representation of a given base type and install |
18366 | it in the TYPE field of the die. */ | |
18367 | ||
f792889a | 18368 | static struct type * |
e7c27a73 | 18369 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18370 | { |
5e22e966 | 18371 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18372 | struct type *type; |
18373 | struct attribute *attr; | |
19f392bc | 18374 | int encoding = 0, bits = 0; |
15d034d0 | 18375 | const char *name; |
34877895 | 18376 | gdbarch *arch; |
c906108c | 18377 | |
e142c38c | 18378 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18379 | if (attr != nullptr && attr->form_is_constant ()) |
18380 | encoding = attr->constant_value (0); | |
e142c38c | 18381 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18382 | if (attr != nullptr) |
529908cb | 18383 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18384 | name = dwarf2_name (die, cu); |
6ccb9162 | 18385 | if (!name) |
34877895 | 18386 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18387 | |
08feed99 | 18388 | arch = objfile->arch (); |
103a685e TT |
18389 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18390 | ||
34877895 | 18391 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18392 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18393 | { |
529908cb | 18394 | int endianity = attr->constant_value (0); |
103a685e TT |
18395 | |
18396 | switch (endianity) | |
18397 | { | |
18398 | case DW_END_big: | |
18399 | byte_order = BFD_ENDIAN_BIG; | |
18400 | break; | |
18401 | case DW_END_little: | |
18402 | byte_order = BFD_ENDIAN_LITTLE; | |
18403 | break; | |
18404 | default: | |
18405 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18406 | break; | |
18407 | } | |
18408 | } | |
6ccb9162 | 18409 | |
09584414 JB |
18410 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18411 | && cu->language == language_ada | |
18412 | && has_zero_over_zero_small_attribute (die, cu)) | |
18413 | { | |
18414 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18415 | the scaling factor is represented as fraction whose value | |
18416 | does not make sense (zero divided by zero), so we should | |
18417 | normally never see these. However, there is a small category | |
18418 | of fixed point types for which GNAT is unable to provide | |
18419 | the scaling factor via the standard DWARF mechanisms, and | |
18420 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18421 | This is likely what this DIE is about. */ |
09584414 JB |
18422 | encoding = (encoding == DW_ATE_signed_fixed |
18423 | ? DW_ATE_signed | |
18424 | : DW_ATE_unsigned); | |
18425 | } | |
18426 | ||
bbcdf9ab TT |
18427 | /* With GNAT encodings, fixed-point information will be encoded in |
18428 | the type name. Note that this can also occur with the above | |
18429 | zero-over-zero case, which is why this is a separate "if" rather | |
18430 | than an "else if". */ | |
18431 | const char *gnat_encoding_suffix = nullptr; | |
18432 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18433 | && cu->language == language_ada | |
18434 | && name != nullptr) | |
18435 | { | |
18436 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18437 | if (gnat_encoding_suffix != nullptr) | |
18438 | { | |
18439 | gdb_assert (startswith (gnat_encoding_suffix, | |
18440 | GNAT_FIXED_POINT_SUFFIX)); | |
18441 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18442 | name, gnat_encoding_suffix - name); | |
18443 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18444 | "XF". */ | |
18445 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18446 | ||
18447 | encoding = (encoding == DW_ATE_signed | |
18448 | ? DW_ATE_signed_fixed | |
18449 | : DW_ATE_unsigned_fixed); | |
18450 | } | |
18451 | } | |
18452 | ||
6ccb9162 | 18453 | switch (encoding) |
c906108c | 18454 | { |
6ccb9162 UW |
18455 | case DW_ATE_address: |
18456 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18457 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18458 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18459 | break; |
18460 | case DW_ATE_boolean: | |
19f392bc | 18461 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18462 | break; |
18463 | case DW_ATE_complex_float: | |
103a685e TT |
18464 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18465 | byte_order); | |
78134374 | 18466 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18467 | { |
18468 | if (name == nullptr) | |
18469 | { | |
18470 | struct obstack *obstack | |
5e22e966 | 18471 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18472 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18473 | nullptr); |
18474 | } | |
18475 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18476 | } | |
18477 | else | |
18478 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18479 | break; |
18480 | case DW_ATE_decimal_float: | |
19f392bc | 18481 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18482 | break; |
18483 | case DW_ATE_float: | |
103a685e | 18484 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18485 | break; |
18486 | case DW_ATE_signed: | |
eb77c9df | 18487 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18488 | break; |
18489 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18490 | if (cu->language == language_fortran |
18491 | && name | |
61012eef | 18492 | && startswith (name, "character(")) |
19f392bc UW |
18493 | type = init_character_type (objfile, bits, 1, name); |
18494 | else | |
eb77c9df | 18495 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18496 | break; |
18497 | case DW_ATE_signed_char: | |
6e70227d | 18498 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18499 | || cu->language == language_pascal |
18500 | || cu->language == language_fortran) | |
19f392bc UW |
18501 | type = init_character_type (objfile, bits, 0, name); |
18502 | else | |
eb77c9df | 18503 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18504 | break; |
18505 | case DW_ATE_unsigned_char: | |
868a0084 | 18506 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18507 | || cu->language == language_pascal |
c44af4eb TT |
18508 | || cu->language == language_fortran |
18509 | || cu->language == language_rust) | |
19f392bc UW |
18510 | type = init_character_type (objfile, bits, 1, name); |
18511 | else | |
eb77c9df | 18512 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18513 | break; |
75079b2b | 18514 | case DW_ATE_UTF: |
53e710ac | 18515 | { |
53e710ac PA |
18516 | if (bits == 16) |
18517 | type = builtin_type (arch)->builtin_char16; | |
18518 | else if (bits == 32) | |
18519 | type = builtin_type (arch)->builtin_char32; | |
18520 | else | |
18521 | { | |
b98664d3 | 18522 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18523 | bits); |
eb77c9df | 18524 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18525 | } |
18526 | return set_die_type (die, type, cu); | |
18527 | } | |
75079b2b | 18528 | break; |
09584414 JB |
18529 | case DW_ATE_signed_fixed: |
18530 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18531 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18532 | break; |
18533 | case DW_ATE_unsigned_fixed: | |
18534 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18535 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18536 | break; |
75079b2b | 18537 | |
6ccb9162 | 18538 | default: |
b98664d3 | 18539 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18540 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18541 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18542 | break; |
c906108c | 18543 | } |
6ccb9162 | 18544 | |
0114d602 | 18545 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18546 | type->set_has_no_signedness (true); |
0114d602 | 18547 | |
2b4424c3 TT |
18548 | maybe_set_alignment (cu, die, type); |
18549 | ||
db558e34 | 18550 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18551 | |
20a5fcbd TT |
18552 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18553 | { | |
18554 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18555 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18556 | { |
529908cb | 18557 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18558 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18559 | /* Only use the attributes if they make sense together. */ | |
18560 | if (attr == nullptr | |
529908cb TT |
18561 | || (attr->as_unsigned () + real_bit_size |
18562 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18563 | { |
18564 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18565 | = real_bit_size; | |
18566 | if (attr != nullptr) | |
18567 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18568 | = attr->as_unsigned (); |
20a5fcbd TT |
18569 | } |
18570 | } | |
18571 | } | |
18572 | ||
f792889a | 18573 | return set_die_type (die, type, cu); |
c906108c SS |
18574 | } |
18575 | ||
80180f79 SA |
18576 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18577 | resulting value of the attribute into struct bound_prop. | |
18578 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18579 | ||
18580 | static int | |
18581 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18582 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18583 | struct type *default_type) | |
80180f79 SA |
18584 | { |
18585 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18586 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18587 | struct objfile *objfile = per_objfile->objfile; |
18588 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18589 | |
9a49df9d AB |
18590 | gdb_assert (default_type != NULL); |
18591 | ||
80180f79 SA |
18592 | if (attr == NULL || prop == NULL) |
18593 | return 0; | |
18594 | ||
4fc6c0d5 | 18595 | if (attr->form_is_block ()) |
80180f79 | 18596 | { |
8d749320 | 18597 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18598 | baton->property_type = default_type; |
80180f79 | 18599 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18600 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18601 | |
18602 | struct dwarf_block *block = attr->as_block (); | |
18603 | baton->locexpr.size = block->size; | |
18604 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18605 | switch (attr->name) |
18606 | { | |
18607 | case DW_AT_string_length: | |
18608 | baton->locexpr.is_reference = true; | |
18609 | break; | |
18610 | default: | |
18611 | baton->locexpr.is_reference = false; | |
18612 | break; | |
18613 | } | |
8c2e4e06 SM |
18614 | |
18615 | prop->set_locexpr (baton); | |
18616 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18617 | } |
cd6c91b4 | 18618 | else if (attr->form_is_ref ()) |
80180f79 SA |
18619 | { |
18620 | struct dwarf2_cu *target_cu = cu; | |
18621 | struct die_info *target_die; | |
18622 | struct attribute *target_attr; | |
18623 | ||
18624 | target_die = follow_die_ref (die, attr, &target_cu); | |
18625 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18626 | if (target_attr == NULL) |
18627 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18628 | target_cu); | |
80180f79 SA |
18629 | if (target_attr == NULL) |
18630 | return 0; | |
18631 | ||
df25ebbd | 18632 | switch (target_attr->name) |
80180f79 | 18633 | { |
df25ebbd | 18634 | case DW_AT_location: |
cd6c91b4 | 18635 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18636 | { |
8d749320 | 18637 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18638 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18639 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18640 | prop->set_loclist (baton); |
18641 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18642 | } |
4fc6c0d5 | 18643 | else if (target_attr->form_is_block ()) |
df25ebbd | 18644 | { |
8d749320 | 18645 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18646 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18647 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18648 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18649 | struct dwarf_block *block = target_attr->as_block (); |
18650 | baton->locexpr.size = block->size; | |
18651 | baton->locexpr.data = block->data; | |
9a49df9d | 18652 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18653 | prop->set_locexpr (baton); |
18654 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18655 | } |
18656 | else | |
18657 | { | |
18658 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18659 | "dynamic property"); | |
18660 | return 0; | |
18661 | } | |
18662 | break; | |
18663 | case DW_AT_data_member_location: | |
18664 | { | |
18665 | LONGEST offset; | |
18666 | ||
18667 | if (!handle_data_member_location (target_die, target_cu, | |
18668 | &offset)) | |
18669 | return 0; | |
18670 | ||
8d749320 | 18671 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18672 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18673 | target_cu); |
df25ebbd JB |
18674 | baton->offset_info.offset = offset; |
18675 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18676 | prop->set_addr_offset (baton); |
df25ebbd JB |
18677 | break; |
18678 | } | |
80180f79 SA |
18679 | } |
18680 | } | |
cd6c91b4 | 18681 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18682 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18683 | else |
18684 | { | |
18685 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18686 | dwarf2_name (die, cu)); | |
18687 | return 0; | |
18688 | } | |
18689 | ||
18690 | return 1; | |
18691 | } | |
18692 | ||
09ba997f | 18693 | /* See read.h. */ |
9a49df9d | 18694 | |
09ba997f | 18695 | struct type * |
293e7e51 | 18696 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18697 | { |
9a49df9d AB |
18698 | struct type *int_type; |
18699 | ||
18700 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18701 | #define TRY_TYPE(F) \ |
18702 | int_type = (unsigned_p \ | |
18703 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18704 | : objfile_type (objfile)->builtin_ ## F); \ | |
18705 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18706 | return int_type |
18707 | ||
18708 | TRY_TYPE (char); | |
18709 | TRY_TYPE (short); | |
18710 | TRY_TYPE (int); | |
18711 | TRY_TYPE (long); | |
18712 | TRY_TYPE (long_long); | |
18713 | ||
18714 | #undef TRY_TYPE | |
18715 | ||
18716 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18717 | } | |
18718 | ||
09ba997f | 18719 | /* See read.h. */ |
11a8b164 | 18720 | |
09ba997f | 18721 | struct type * |
293e7e51 | 18722 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18723 | { |
293e7e51 SM |
18724 | int addr_size = this->per_cu->addr_size (); |
18725 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18726 | } |
18727 | ||
b86352cf AB |
18728 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18729 | present (which is valid) then compute the default type based on the | |
18730 | compilation units address size. */ | |
18731 | ||
18732 | static struct type * | |
18733 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18734 | { | |
18735 | struct type *index_type = die_type (die, cu); | |
18736 | ||
18737 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18738 | without specifying a base type. | |
18739 | In that case, the base type must be set to the type of | |
18740 | the lower bound, upper bound or count, in that order, if any of these | |
18741 | three attributes references an object that has a type. | |
18742 | If no base type is found, the Dwarf-2 specifications say that | |
18743 | a signed integer type of size equal to the size of an address should | |
18744 | be used. | |
18745 | For the following C code: `extern char gdb_int [];' | |
18746 | GCC produces an empty range DIE. | |
18747 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18748 | high bound or count are not yet handled by this code. */ | |
78134374 | 18749 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18750 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18751 | |
18752 | return index_type; | |
18753 | } | |
18754 | ||
a02abb62 JB |
18755 | /* Read the given DW_AT_subrange DIE. */ |
18756 | ||
f792889a | 18757 | static struct type * |
a02abb62 JB |
18758 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18759 | { | |
4c9ad8c2 | 18760 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18761 | struct type *range_type; |
18762 | struct attribute *attr; | |
729efb13 | 18763 | struct dynamic_prop low, high; |
4fae6e18 | 18764 | int low_default_is_valid; |
c451ebe5 | 18765 | int high_bound_is_count = 0; |
15d034d0 | 18766 | const char *name; |
d359392f | 18767 | ULONGEST negative_mask; |
e77813c8 | 18768 | |
b86352cf AB |
18769 | orig_base_type = read_subrange_index_type (die, cu); |
18770 | ||
4c9ad8c2 TT |
18771 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18772 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18773 | creating the range type, but we use the result of check_typedef | |
18774 | when examining properties of the type. */ | |
18775 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18776 | |
7e314c57 JK |
18777 | /* The die_type call above may have already set the type for this DIE. */ |
18778 | range_type = get_die_type (die, cu); | |
18779 | if (range_type) | |
18780 | return range_type; | |
18781 | ||
8c2e4e06 | 18782 | high.set_const_val (0); |
729efb13 | 18783 | |
4fae6e18 JK |
18784 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18785 | omitting DW_AT_lower_bound. */ | |
18786 | switch (cu->language) | |
6e70227d | 18787 | { |
4fae6e18 JK |
18788 | case language_c: |
18789 | case language_cplus: | |
8c2e4e06 | 18790 | low.set_const_val (0); |
4fae6e18 JK |
18791 | low_default_is_valid = 1; |
18792 | break; | |
18793 | case language_fortran: | |
8c2e4e06 | 18794 | low.set_const_val (1); |
4fae6e18 JK |
18795 | low_default_is_valid = 1; |
18796 | break; | |
18797 | case language_d: | |
4fae6e18 | 18798 | case language_objc: |
c44af4eb | 18799 | case language_rust: |
8c2e4e06 | 18800 | low.set_const_val (0); |
4fae6e18 JK |
18801 | low_default_is_valid = (cu->header.version >= 4); |
18802 | break; | |
18803 | case language_ada: | |
18804 | case language_m2: | |
18805 | case language_pascal: | |
8c2e4e06 | 18806 | low.set_const_val (1); |
4fae6e18 JK |
18807 | low_default_is_valid = (cu->header.version >= 4); |
18808 | break; | |
18809 | default: | |
8c2e4e06 | 18810 | low.set_const_val (0); |
4fae6e18 JK |
18811 | low_default_is_valid = 0; |
18812 | break; | |
a02abb62 JB |
18813 | } |
18814 | ||
e142c38c | 18815 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18816 | if (attr != nullptr) |
9a49df9d | 18817 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18818 | else if (!low_default_is_valid) |
b98664d3 | 18819 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18820 | "- DIE at %s [in module %s]"), |
18821 | sect_offset_str (die->sect_off), | |
5e22e966 | 18822 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18823 | |
506f5c41 TV |
18824 | struct attribute *attr_ub, *attr_count; |
18825 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18826 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18827 | { |
506f5c41 | 18828 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18829 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18830 | { |
c451ebe5 | 18831 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18832 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18833 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18834 | else |
18835 | high_bound_is_count = 1; | |
c2ff108b | 18836 | } |
506f5c41 TV |
18837 | else |
18838 | { | |
18839 | if (attr_ub != NULL) | |
18840 | complaint (_("Unresolved DW_AT_upper_bound " | |
18841 | "- DIE at %s [in module %s]"), | |
18842 | sect_offset_str (die->sect_off), | |
5e22e966 | 18843 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18844 | if (attr_count != NULL) |
18845 | complaint (_("Unresolved DW_AT_count " | |
18846 | "- DIE at %s [in module %s]"), | |
18847 | sect_offset_str (die->sect_off), | |
5e22e966 | 18848 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18849 | } |
e77813c8 | 18850 | } |
a02abb62 | 18851 | |
4e962e74 TT |
18852 | LONGEST bias = 0; |
18853 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18854 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18855 | bias = bias_attr->constant_value (0); |
4e962e74 | 18856 | |
dbb9c2b1 JB |
18857 | /* Normally, the DWARF producers are expected to use a signed |
18858 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18859 | But this is unfortunately not always the case, as witnessed | |
18860 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18861 | is used instead. To work around that ambiguity, we treat | |
18862 | the bounds as signed, and thus sign-extend their values, when | |
18863 | the base type is signed. */ | |
6e70227d | 18864 | negative_mask = |
d359392f | 18865 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18866 | if (low.kind () == PROP_CONST |
c6d940a9 | 18867 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18868 | low.set_const_val (low.const_val () | negative_mask); |
18869 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18870 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18871 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18872 | |
5bbd8269 AB |
18873 | /* Check for bit and byte strides. */ |
18874 | struct dynamic_prop byte_stride_prop; | |
18875 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18876 | if (attr_byte_stride != nullptr) | |
18877 | { | |
293e7e51 | 18878 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18879 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18880 | prop_type); | |
18881 | } | |
18882 | ||
18883 | struct dynamic_prop bit_stride_prop; | |
18884 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18885 | if (attr_bit_stride != nullptr) | |
18886 | { | |
18887 | /* It only makes sense to have either a bit or byte stride. */ | |
18888 | if (attr_byte_stride != nullptr) | |
18889 | { | |
18890 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18891 | "- DIE at %s [in module %s]"), | |
18892 | sect_offset_str (die->sect_off), | |
5e22e966 | 18893 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18894 | attr_bit_stride = nullptr; |
18895 | } | |
18896 | else | |
18897 | { | |
293e7e51 | 18898 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18899 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18900 | prop_type); | |
18901 | } | |
18902 | } | |
18903 | ||
18904 | if (attr_byte_stride != nullptr | |
18905 | || attr_bit_stride != nullptr) | |
18906 | { | |
18907 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18908 | struct dynamic_prop *stride | |
18909 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18910 | ||
18911 | range_type | |
18912 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18913 | &high, bias, stride, byte_stride_p); | |
18914 | } | |
18915 | else | |
18916 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18917 | |
c451ebe5 | 18918 | if (high_bound_is_count) |
599088e3 | 18919 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18920 | |
c2ff108b JK |
18921 | /* Ada expects an empty array on no boundary attributes. */ |
18922 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18923 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18924 | |
39cbfefa DJ |
18925 | name = dwarf2_name (die, cu); |
18926 | if (name) | |
d0e39ea2 | 18927 | range_type->set_name (name); |
6e70227d | 18928 | |
e142c38c | 18929 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18930 | if (attr != nullptr) |
529908cb | 18931 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 18932 | |
2b4424c3 TT |
18933 | maybe_set_alignment (cu, die, range_type); |
18934 | ||
7e314c57 JK |
18935 | set_die_type (die, range_type, cu); |
18936 | ||
18937 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18938 | set_descriptive_type (range_type, die, cu); |
18939 | ||
7e314c57 | 18940 | return range_type; |
a02abb62 | 18941 | } |
6e70227d | 18942 | |
f792889a | 18943 | static struct type * |
81a17f79 JB |
18944 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18945 | { | |
18946 | struct type *type; | |
81a17f79 | 18947 | |
5e22e966 | 18948 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18949 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18950 | |
74a2f8ff | 18951 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18952 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18953 | such a type, we treat it as a stub, and try to resolve it later on, |
18954 | when needed. */ | |
18955 | if (cu->language == language_ada) | |
b4b73759 | 18956 | type->set_is_stub (true); |
74a2f8ff | 18957 | |
f792889a | 18958 | return set_die_type (die, type, cu); |
81a17f79 | 18959 | } |
a02abb62 | 18960 | |
639d11d3 DC |
18961 | /* Read a single die and all its descendents. Set the die's sibling |
18962 | field to NULL; set other fields in the die correctly, and set all | |
18963 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18964 | location of the info_ptr after reading all of those dies. PARENT | |
18965 | is the parent of the die in question. */ | |
18966 | ||
18967 | static struct die_info * | |
dee91e82 | 18968 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18969 | const gdb_byte *info_ptr, |
18970 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18971 | struct die_info *parent) |
639d11d3 DC |
18972 | { |
18973 | struct die_info *die; | |
d521ce57 | 18974 | const gdb_byte *cur_ptr; |
639d11d3 | 18975 | |
3e225074 | 18976 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18977 | if (die == NULL) |
18978 | { | |
18979 | *new_info_ptr = cur_ptr; | |
18980 | return NULL; | |
18981 | } | |
93311388 | 18982 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18983 | |
3e225074 | 18984 | if (die->has_children) |
bf6af496 | 18985 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18986 | else |
18987 | { | |
18988 | die->child = NULL; | |
18989 | *new_info_ptr = cur_ptr; | |
18990 | } | |
18991 | ||
18992 | die->sibling = NULL; | |
18993 | die->parent = parent; | |
18994 | return die; | |
18995 | } | |
18996 | ||
18997 | /* Read a die, all of its descendents, and all of its siblings; set | |
18998 | all of the fields of all of the dies correctly. Arguments are as | |
18999 | in read_die_and_children. */ | |
19000 | ||
19001 | static struct die_info * | |
bf6af496 | 19002 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19003 | const gdb_byte *info_ptr, |
19004 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19005 | struct die_info *parent) |
639d11d3 DC |
19006 | { |
19007 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19008 | const gdb_byte *cur_ptr; |
639d11d3 | 19009 | |
c906108c | 19010 | cur_ptr = info_ptr; |
639d11d3 DC |
19011 | first_die = last_sibling = NULL; |
19012 | ||
19013 | while (1) | |
c906108c | 19014 | { |
639d11d3 | 19015 | struct die_info *die |
dee91e82 | 19016 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19017 | |
1d325ec1 | 19018 | if (die == NULL) |
c906108c | 19019 | { |
639d11d3 DC |
19020 | *new_info_ptr = cur_ptr; |
19021 | return first_die; | |
c906108c | 19022 | } |
1d325ec1 DJ |
19023 | |
19024 | if (!first_die) | |
19025 | first_die = die; | |
c906108c | 19026 | else |
1d325ec1 DJ |
19027 | last_sibling->sibling = die; |
19028 | ||
19029 | last_sibling = die; | |
c906108c | 19030 | } |
c906108c SS |
19031 | } |
19032 | ||
bf6af496 DE |
19033 | /* Read a die, all of its descendents, and all of its siblings; set |
19034 | all of the fields of all of the dies correctly. Arguments are as | |
19035 | in read_die_and_children. | |
19036 | This the main entry point for reading a DIE and all its children. */ | |
19037 | ||
19038 | static struct die_info * | |
19039 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19040 | const gdb_byte *info_ptr, |
19041 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19042 | struct die_info *parent) |
19043 | { | |
19044 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19045 | new_info_ptr, parent); | |
19046 | ||
b4f54984 | 19047 | if (dwarf_die_debug) |
bf6af496 DE |
19048 | { |
19049 | fprintf_unfiltered (gdb_stdlog, | |
19050 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19051 | reader->die_section->get_name (), |
bf6af496 DE |
19052 | (unsigned) (info_ptr - reader->die_section->buffer), |
19053 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19054 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19055 | } |
19056 | ||
19057 | return die; | |
19058 | } | |
19059 | ||
3019eac3 DE |
19060 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19061 | attributes. | |
19062 | The caller is responsible for filling in the extra attributes | |
19063 | and updating (*DIEP)->num_attrs. | |
19064 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19065 | except for its child, sibling, and parent fields. */ |
93311388 | 19066 | |
d521ce57 | 19067 | static const gdb_byte * |
3019eac3 | 19068 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19069 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19070 | int num_extra_attrs) |
93311388 | 19071 | { |
b64f50a1 | 19072 | unsigned int abbrev_number, bytes_read, i; |
7c32eebb | 19073 | const struct abbrev_info *abbrev; |
93311388 DE |
19074 | struct die_info *die; |
19075 | struct dwarf2_cu *cu = reader->cu; | |
19076 | bfd *abfd = reader->abfd; | |
19077 | ||
9c541725 | 19078 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19079 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19080 | info_ptr += bytes_read; | |
19081 | if (!abbrev_number) | |
19082 | { | |
19083 | *diep = NULL; | |
93311388 DE |
19084 | return info_ptr; |
19085 | } | |
19086 | ||
685af9cd | 19087 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19088 | if (!abbrev) |
348e048f DE |
19089 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19090 | abbrev_number, | |
19091 | bfd_get_filename (abfd)); | |
19092 | ||
3019eac3 | 19093 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19094 | die->sect_off = sect_off; |
93311388 DE |
19095 | die->tag = abbrev->tag; |
19096 | die->abbrev = abbrev_number; | |
3e225074 | 19097 | die->has_children = abbrev->has_children; |
93311388 | 19098 | |
3019eac3 DE |
19099 | /* Make the result usable. |
19100 | The caller needs to update num_attrs after adding the extra | |
19101 | attributes. */ | |
93311388 DE |
19102 | die->num_attrs = abbrev->num_attrs; |
19103 | ||
7a5f294d | 19104 | bool any_need_reprocess = false; |
93311388 | 19105 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19106 | { |
7a5f294d TT |
19107 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19108 | info_ptr); | |
19109 | if (die->attrs[i].requires_reprocessing_p ()) | |
19110 | any_need_reprocess = true; | |
18a8505e AT |
19111 | } |
19112 | ||
052c8bb8 | 19113 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19114 | if (attr != nullptr && attr->form_is_unsigned ()) |
19115 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19116 | |
41144253 | 19117 | attr = die->attr (DW_AT_loclists_base); |
19118 | if (attr != nullptr) | |
529908cb | 19119 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19120 | |
a39fdb41 | 19121 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19122 | if (maybe_addr_base.has_value ()) |
19123 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19124 | |
19125 | attr = die->attr (DW_AT_rnglists_base); | |
19126 | if (attr != nullptr) | |
2b0c7f41 | 19127 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 19128 | |
7a5f294d TT |
19129 | if (any_need_reprocess) |
19130 | { | |
19131 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19132 | { | |
19133 | if (die->attrs[i].requires_reprocessing_p ()) | |
19134 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19135 | } | |
19136 | } | |
93311388 | 19137 | *diep = die; |
93311388 DE |
19138 | return info_ptr; |
19139 | } | |
19140 | ||
3019eac3 DE |
19141 | /* Read a die and all its attributes. |
19142 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19143 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19144 | |
d521ce57 | 19145 | static const gdb_byte * |
3019eac3 | 19146 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19147 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19148 | { |
d521ce57 | 19149 | const gdb_byte *result; |
bf6af496 | 19150 | |
3e225074 | 19151 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19152 | |
b4f54984 | 19153 | if (dwarf_die_debug) |
bf6af496 DE |
19154 | { |
19155 | fprintf_unfiltered (gdb_stdlog, | |
19156 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19157 | reader->die_section->get_name (), |
bf6af496 DE |
19158 | (unsigned) (info_ptr - reader->die_section->buffer), |
19159 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19160 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19161 | } |
19162 | ||
19163 | return result; | |
3019eac3 | 19164 | } |
433df2d4 | 19165 | \f |
c906108c | 19166 | |
72bf9492 DJ |
19167 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19168 | symbol for. */ | |
19169 | ||
19170 | static int | |
d8f62e84 | 19171 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19172 | { |
19173 | switch (tag) | |
19174 | { | |
19175 | #if 0 | |
19176 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19177 | that we don't at present. Note that normally this does not |
19178 | matter, mainly because C compilers don't give names to these | |
19179 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19180 | case DW_TAG_file_type: |
19181 | case DW_TAG_ptr_to_member_type: | |
19182 | case DW_TAG_set_type: | |
19183 | case DW_TAG_string_type: | |
19184 | case DW_TAG_subroutine_type: | |
19185 | #endif | |
d8f62e84 TT |
19186 | |
19187 | /* GNAT may emit an array with a name, but no typedef, so we | |
19188 | need to make a symbol in this case. */ | |
19189 | case DW_TAG_array_type: | |
19190 | return lang == language_ada; | |
19191 | ||
72bf9492 DJ |
19192 | case DW_TAG_base_type: |
19193 | case DW_TAG_class_type: | |
680b30c7 | 19194 | case DW_TAG_interface_type: |
72bf9492 DJ |
19195 | case DW_TAG_enumeration_type: |
19196 | case DW_TAG_structure_type: | |
19197 | case DW_TAG_subrange_type: | |
19198 | case DW_TAG_typedef: | |
19199 | case DW_TAG_union_type: | |
19200 | return 1; | |
19201 | default: | |
19202 | return 0; | |
19203 | } | |
19204 | } | |
19205 | ||
19206 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19207 | ||
19208 | static struct partial_die_info * | |
dee91e82 | 19209 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19210 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19211 | { |
dee91e82 | 19212 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19213 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19214 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19215 | unsigned int bytes_read; |
5afb4e99 | 19216 | unsigned int load_all = 0; |
72bf9492 DJ |
19217 | int nesting_level = 1; |
19218 | ||
19219 | parent_die = NULL; | |
19220 | last_die = NULL; | |
19221 | ||
7adf1e79 DE |
19222 | gdb_assert (cu->per_cu != NULL); |
19223 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19224 | load_all = 1; |
19225 | ||
72bf9492 DJ |
19226 | cu->partial_dies |
19227 | = htab_create_alloc_ex (cu->header.length / 12, | |
19228 | partial_die_hash, | |
19229 | partial_die_eq, | |
19230 | NULL, | |
19231 | &cu->comp_unit_obstack, | |
19232 | hashtab_obstack_allocate, | |
19233 | dummy_obstack_deallocate); | |
19234 | ||
72bf9492 DJ |
19235 | while (1) |
19236 | { | |
7c32eebb TT |
19237 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
19238 | &bytes_read); | |
72bf9492 DJ |
19239 | |
19240 | /* A NULL abbrev means the end of a series of children. */ | |
19241 | if (abbrev == NULL) | |
19242 | { | |
19243 | if (--nesting_level == 0) | |
cd9983dd YQ |
19244 | return first_die; |
19245 | ||
72bf9492 DJ |
19246 | info_ptr += bytes_read; |
19247 | last_die = parent_die; | |
19248 | parent_die = parent_die->die_parent; | |
19249 | continue; | |
19250 | } | |
19251 | ||
98bfdba5 PA |
19252 | /* Check for template arguments. We never save these; if |
19253 | they're seen, we just mark the parent, and go on our way. */ | |
19254 | if (parent_die != NULL | |
19255 | && cu->language == language_cplus | |
19256 | && (abbrev->tag == DW_TAG_template_type_param | |
19257 | || abbrev->tag == DW_TAG_template_value_param)) | |
19258 | { | |
19259 | parent_die->has_template_arguments = 1; | |
19260 | ||
19261 | if (!load_all) | |
19262 | { | |
19263 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19264 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19265 | continue; |
19266 | } | |
19267 | } | |
19268 | ||
0d99eb77 | 19269 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19270 | Skip their other children. */ |
19271 | if (!load_all | |
19272 | && cu->language == language_cplus | |
19273 | && parent_die != NULL | |
f9b5d5ea TV |
19274 | && parent_die->tag == DW_TAG_subprogram |
19275 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19276 | { |
dee91e82 | 19277 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19278 | continue; |
19279 | } | |
19280 | ||
5afb4e99 DJ |
19281 | /* Check whether this DIE is interesting enough to save. Normally |
19282 | we would not be interested in members here, but there may be | |
19283 | later variables referencing them via DW_AT_specification (for | |
19284 | static members). */ | |
19285 | if (!load_all | |
d8f62e84 | 19286 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19287 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19288 | && abbrev->tag != DW_TAG_enumerator |
19289 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19290 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19291 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19292 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19293 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19294 | && abbrev->tag != DW_TAG_module |
95554aad | 19295 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19296 | && abbrev->tag != DW_TAG_imported_unit |
19297 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19298 | { |
19299 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19300 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19301 | continue; |
19302 | } | |
19303 | ||
6f06d47b YQ |
19304 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19305 | abbrev); | |
cd9983dd | 19306 | |
48fbe735 | 19307 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19308 | |
19309 | /* This two-pass algorithm for processing partial symbols has a | |
19310 | high cost in cache pressure. Thus, handle some simple cases | |
19311 | here which cover the majority of C partial symbols. DIEs | |
19312 | which neither have specification tags in them, nor could have | |
19313 | specification tags elsewhere pointing at them, can simply be | |
19314 | processed and discarded. | |
19315 | ||
19316 | This segment is also optional; scan_partial_symbols and | |
19317 | add_partial_symbol will handle these DIEs if we chain | |
19318 | them in normally. When compilers which do not emit large | |
19319 | quantities of duplicate debug information are more common, | |
19320 | this code can probably be removed. */ | |
19321 | ||
19322 | /* Any complete simple types at the top level (pretty much all | |
19323 | of them, for a language without namespaces), can be processed | |
19324 | directly. */ | |
19325 | if (parent_die == NULL | |
cd9983dd YQ |
19326 | && pdi.has_specification == 0 |
19327 | && pdi.is_declaration == 0 | |
19328 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19329 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19330 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19331 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19332 | { |
7d00ffec | 19333 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19334 | add_partial_symbol (&pdi, cu); |
19335 | ||
cd9983dd | 19336 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19337 | continue; |
19338 | } | |
19339 | ||
d8228535 JK |
19340 | /* The exception for DW_TAG_typedef with has_children above is |
19341 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19342 | type_name_or_error will error on such types later. |
d8228535 JK |
19343 | |
19344 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19345 | it could not find the child DIEs referenced later, this is checked | |
19346 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19347 | ||
cd9983dd | 19348 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19349 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19350 | "- DIE at %s [in module %s]"), |
cd9983dd | 19351 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19352 | |
72bf9492 DJ |
19353 | /* If we're at the second level, and we're an enumerator, and |
19354 | our parent has no specification (meaning possibly lives in a | |
19355 | namespace elsewhere), then we can add the partial symbol now | |
19356 | instead of queueing it. */ | |
cd9983dd | 19357 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19358 | && parent_die != NULL |
19359 | && parent_die->die_parent == NULL | |
19360 | && parent_die->tag == DW_TAG_enumeration_type | |
19361 | && parent_die->has_specification == 0) | |
19362 | { | |
7d00ffec | 19363 | if (pdi.raw_name == NULL) |
b98664d3 | 19364 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19365 | else if (building_psymtab) |
f0fbb768 | 19366 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19367 | |
cd9983dd | 19368 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19369 | continue; |
19370 | } | |
19371 | ||
cd9983dd | 19372 | struct partial_die_info *part_die |
6f06d47b | 19373 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19374 | |
72bf9492 DJ |
19375 | /* We'll save this DIE so link it in. */ |
19376 | part_die->die_parent = parent_die; | |
19377 | part_die->die_sibling = NULL; | |
19378 | part_die->die_child = NULL; | |
19379 | ||
19380 | if (last_die && last_die == parent_die) | |
19381 | last_die->die_child = part_die; | |
19382 | else if (last_die) | |
19383 | last_die->die_sibling = part_die; | |
19384 | ||
19385 | last_die = part_die; | |
19386 | ||
19387 | if (first_die == NULL) | |
19388 | first_die = part_die; | |
19389 | ||
19390 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19391 | find interesting need to be in the hash table, because we | |
19392 | also have the parent/sibling/child chains; only those that we | |
19393 | might refer to by offset later during partial symbol reading. | |
19394 | ||
19395 | For now this means things that might have be the target of a | |
19396 | DW_AT_specification, DW_AT_abstract_origin, or | |
19397 | DW_AT_extension. DW_AT_extension will refer only to | |
19398 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19399 | many things under the function DIE, but we do not recurse | |
19400 | into function DIEs during partial symbol reading) and | |
19401 | possibly variables as well; DW_AT_specification refers to | |
19402 | declarations. Declarations ought to have the DW_AT_declaration | |
19403 | flag. It happens that GCC forgets to put it in sometimes, but | |
19404 | only for functions, not for types. | |
19405 | ||
19406 | Adding more things than necessary to the hash table is harmless | |
19407 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19408 | wasted time in find_partial_die, when we reread the compilation |
19409 | unit with load_all_dies set. */ | |
72bf9492 | 19410 | |
5afb4e99 | 19411 | if (load_all |
72929c62 | 19412 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19413 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19414 | || abbrev->tag == DW_TAG_variable |
19415 | || abbrev->tag == DW_TAG_namespace | |
19416 | || part_die->is_declaration) | |
19417 | { | |
19418 | void **slot; | |
19419 | ||
19420 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19421 | to_underlying (part_die->sect_off), |
19422 | INSERT); | |
72bf9492 DJ |
19423 | *slot = part_die; |
19424 | } | |
19425 | ||
72bf9492 | 19426 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19427 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19428 | languages we have to, so that we can get at method physnames |
19429 | to infer fully qualified class names, for DW_AT_specification, | |
19430 | and for C++ template arguments. For C++, we also look one level | |
19431 | inside functions to find template arguments (if the name of the | |
19432 | function does not already contain the template arguments). | |
bc30ff58 | 19433 | |
0a4b0913 AB |
19434 | For Ada and Fortran, we need to scan the children of subprograms |
19435 | and lexical blocks as well because these languages allow the | |
19436 | definition of nested entities that could be interesting for the | |
19437 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19438 | if (last_die->has_children |
5afb4e99 DJ |
19439 | && (load_all |
19440 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19441 | || last_die->tag == DW_TAG_module |
72bf9492 | 19442 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19443 | || (cu->language == language_cplus |
19444 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19445 | && (last_die->raw_name == NULL |
19446 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19447 | || (cu->language != language_c |
19448 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19449 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19450 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19451 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19452 | || ((cu->language == language_ada |
19453 | || cu->language == language_fortran) | |
bc30ff58 JB |
19454 | && (last_die->tag == DW_TAG_subprogram |
19455 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19456 | { |
19457 | nesting_level++; | |
19458 | parent_die = last_die; | |
19459 | continue; | |
19460 | } | |
19461 | ||
19462 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19463 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19464 | |
19465 | /* Back to the top, do it again. */ | |
19466 | } | |
19467 | } | |
19468 | ||
6f06d47b | 19469 | partial_die_info::partial_die_info (sect_offset sect_off_, |
7c32eebb | 19470 | const struct abbrev_info *abbrev) |
6f06d47b YQ |
19471 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) |
19472 | { | |
19473 | } | |
19474 | ||
7d00ffec TT |
19475 | /* See class definition. */ |
19476 | ||
19477 | const char * | |
19478 | partial_die_info::name (dwarf2_cu *cu) | |
19479 | { | |
19480 | if (!canonical_name && raw_name != nullptr) | |
19481 | { | |
19482 | struct objfile *objfile = cu->per_objfile->objfile; | |
19483 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19484 | canonical_name = 1; | |
19485 | } | |
19486 | ||
19487 | return raw_name; | |
19488 | } | |
19489 | ||
35cc7ed7 YQ |
19490 | /* Read a minimal amount of information into the minimal die structure. |
19491 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19492 | |
48fbe735 YQ |
19493 | const gdb_byte * |
19494 | partial_die_info::read (const struct die_reader_specs *reader, | |
19495 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19496 | { |
dee91e82 | 19497 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19498 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19499 | unsigned int i; |
c5aa993b | 19500 | int has_low_pc_attr = 0; |
c906108c | 19501 | int has_high_pc_attr = 0; |
91da1414 | 19502 | int high_pc_relative = 0; |
c906108c | 19503 | |
fd0a254f | 19504 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19505 | { |
e7da7f8f | 19506 | attribute attr; |
7a5f294d | 19507 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19508 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19509 | already been read at this point, so there is no need to wait until |
18a8505e | 19510 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19511 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19512 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19513 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19514 | partial symbol table. */ |
c906108c SS |
19515 | switch (attr.name) |
19516 | { | |
19517 | case DW_AT_name: | |
48fbe735 | 19518 | switch (tag) |
71c25dea TT |
19519 | { |
19520 | case DW_TAG_compile_unit: | |
95554aad | 19521 | case DW_TAG_partial_unit: |
348e048f | 19522 | case DW_TAG_type_unit: |
71c25dea TT |
19523 | /* Compilation units have a DW_AT_name that is a filename, not |
19524 | a source language identifier. */ | |
19525 | case DW_TAG_enumeration_type: | |
19526 | case DW_TAG_enumerator: | |
19527 | /* These tags always have simple identifiers already; no need | |
19528 | to canonicalize them. */ | |
7d00ffec | 19529 | canonical_name = 1; |
2c830f54 | 19530 | raw_name = attr.as_string (); |
71c25dea TT |
19531 | break; |
19532 | default: | |
7d00ffec | 19533 | canonical_name = 0; |
2c830f54 | 19534 | raw_name = attr.as_string (); |
71c25dea TT |
19535 | break; |
19536 | } | |
c906108c | 19537 | break; |
31ef98ae | 19538 | case DW_AT_linkage_name: |
c906108c | 19539 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19540 | /* Note that both forms of linkage name might appear. We |
19541 | assume they will be the same, and we only store the last | |
19542 | one we see. */ | |
95f982e5 | 19543 | linkage_name = attr.as_string (); |
c906108c SS |
19544 | break; |
19545 | case DW_AT_low_pc: | |
19546 | has_low_pc_attr = 1; | |
95f982e5 | 19547 | lowpc = attr.as_address (); |
c906108c SS |
19548 | break; |
19549 | case DW_AT_high_pc: | |
19550 | has_high_pc_attr = 1; | |
95f982e5 | 19551 | highpc = attr.as_address (); |
cd6c91b4 | 19552 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19553 | high_pc_relative = 1; |
c906108c SS |
19554 | break; |
19555 | case DW_AT_location: | |
dda83cd7 SM |
19556 | /* Support the .debug_loc offsets. */ |
19557 | if (attr.form_is_block ()) | |
19558 | { | |
9d2246fc | 19559 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19560 | } |
19561 | else if (attr.form_is_section_offset ()) | |
19562 | { | |
4d3c2250 | 19563 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19564 | } |
19565 | else | |
19566 | { | |
4d3c2250 KB |
19567 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19568 | "partial symbol information"); | |
dda83cd7 | 19569 | } |
c906108c | 19570 | break; |
c906108c | 19571 | case DW_AT_external: |
c45bc3f8 | 19572 | is_external = attr.as_boolean (); |
c906108c SS |
19573 | break; |
19574 | case DW_AT_declaration: | |
c45bc3f8 | 19575 | is_declaration = attr.as_boolean (); |
c906108c SS |
19576 | break; |
19577 | case DW_AT_type: | |
48fbe735 | 19578 | has_type = 1; |
c906108c SS |
19579 | break; |
19580 | case DW_AT_abstract_origin: | |
19581 | case DW_AT_specification: | |
72bf9492 | 19582 | case DW_AT_extension: |
48fbe735 | 19583 | has_specification = 1; |
0826b30a | 19584 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19585 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19586 | || cu->per_cu->is_dwz); |
c906108c SS |
19587 | break; |
19588 | case DW_AT_sibling: | |
19589 | /* Ignore absolute siblings, they might point outside of | |
19590 | the current compile unit. */ | |
19591 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19592 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19593 | else |
b9502d3f | 19594 | { |
48fbe735 | 19595 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19596 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19597 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19598 | |
19599 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19600 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19601 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19602 | reader->die_section->overflow_complaint (); |
b9502d3f | 19603 | else |
48fbe735 | 19604 | sibling = sibling_ptr; |
b9502d3f | 19605 | } |
c906108c | 19606 | break; |
dda83cd7 SM |
19607 | case DW_AT_byte_size: |
19608 | has_byte_size = 1; | |
19609 | break; | |
19610 | case DW_AT_const_value: | |
19611 | has_const_value = 1; | |
19612 | break; | |
68511cec CES |
19613 | case DW_AT_calling_convention: |
19614 | /* DWARF doesn't provide a way to identify a program's source-level | |
19615 | entry point. DW_AT_calling_convention attributes are only meant | |
19616 | to describe functions' calling conventions. | |
19617 | ||
19618 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19619 | Fortran, and before DWARF 4 DW_CC_program was the only |
19620 | piece of debugging information whose definition refers to | |
19621 | a 'main program' at all, several compilers marked Fortran | |
19622 | main programs with DW_CC_program --- even when those | |
19623 | functions use the standard calling conventions. | |
19624 | ||
19625 | Although DWARF now specifies a way to provide this | |
19626 | information, we support this practice for backward | |
19627 | compatibility. */ | |
529908cb | 19628 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19629 | && cu->language == language_fortran) |
48fbe735 | 19630 | main_subprogram = 1; |
68511cec | 19631 | break; |
481860b3 | 19632 | case DW_AT_inline: |
529908cb TT |
19633 | { |
19634 | LONGEST value = attr.constant_value (-1); | |
19635 | if (value == DW_INL_inlined | |
19636 | || value == DW_INL_declared_inlined) | |
19637 | may_be_inlined = 1; | |
19638 | } | |
481860b3 | 19639 | break; |
95554aad TT |
19640 | |
19641 | case DW_AT_import: | |
48fbe735 | 19642 | if (tag == DW_TAG_imported_unit) |
36586728 | 19643 | { |
0826b30a | 19644 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19645 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19646 | || cu->per_cu->is_dwz); |
19647 | } | |
95554aad TT |
19648 | break; |
19649 | ||
0c1b455e | 19650 | case DW_AT_main_subprogram: |
c45bc3f8 | 19651 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19652 | break; |
19653 | ||
05caa1d2 TT |
19654 | case DW_AT_ranges: |
19655 | { | |
2b0c7f41 SM |
19656 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19657 | on DWARF version). */ | |
19658 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19659 | ||
19660 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
19661 | this value. */ | |
19662 | if (tag != DW_TAG_compile_unit) | |
19663 | ranges_offset += cu->gnu_ranges_base; | |
19664 | ||
05caa1d2 | 19665 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 19666 | nullptr, tag)) |
05caa1d2 TT |
19667 | has_pc_info = 1; |
19668 | } | |
19669 | break; | |
19670 | ||
c906108c SS |
19671 | default: |
19672 | break; | |
19673 | } | |
19674 | } | |
19675 | ||
10d06d82 TT |
19676 | /* For Ada, if both the name and the linkage name appear, we prefer |
19677 | the latter. This lets "catch exception" work better, regardless | |
19678 | of the order in which the name and linkage name were emitted. | |
19679 | Really, though, this is just a workaround for the fact that gdb | |
19680 | doesn't store both the name and the linkage name. */ | |
19681 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19682 | raw_name = linkage_name; |
10d06d82 | 19683 | |
91da1414 | 19684 | if (high_pc_relative) |
48fbe735 | 19685 | highpc += lowpc; |
91da1414 | 19686 | |
9373cf26 JK |
19687 | if (has_low_pc_attr && has_high_pc_attr) |
19688 | { | |
19689 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19690 | eliminate duplicate copies of functions and vtables and such. | |
19691 | The linker will arbitrarily choose one and discard the others. | |
19692 | The AT_*_pc values for such functions refer to local labels in | |
19693 | these sections. If the section from that file was discarded, the | |
19694 | labels are not in the output, so the relocs get a value of 0. | |
19695 | If this is a discarded function, mark the pc bounds as invalid, | |
19696 | so that GDB will ignore it. */ | |
976ca316 | 19697 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19698 | { |
976ca316 | 19699 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19700 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19701 | |
b98664d3 | 19702 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19703 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19704 | paddress (gdbarch, lowpc), |
19705 | sect_offset_str (sect_off), | |
9d8780f0 | 19706 | objfile_name (objfile)); |
9373cf26 JK |
19707 | } |
19708 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19709 | else if (lowpc >= highpc) |
9373cf26 | 19710 | { |
976ca316 | 19711 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19712 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19713 | |
b98664d3 | 19714 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19715 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19716 | paddress (gdbarch, lowpc), |
19717 | paddress (gdbarch, highpc), | |
19718 | sect_offset_str (sect_off), | |
9c541725 | 19719 | objfile_name (objfile)); |
9373cf26 JK |
19720 | } |
19721 | else | |
48fbe735 | 19722 | has_pc_info = 1; |
9373cf26 | 19723 | } |
85cbf3d3 | 19724 | |
c906108c SS |
19725 | return info_ptr; |
19726 | } | |
19727 | ||
72bf9492 DJ |
19728 | /* Find a cached partial DIE at OFFSET in CU. */ |
19729 | ||
d590ff25 YQ |
19730 | struct partial_die_info * |
19731 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19732 | { |
19733 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19734 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19735 | |
9a3c8263 | 19736 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19737 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19738 | to_underlying (sect_off))); |
72bf9492 | 19739 | |
72bf9492 DJ |
19740 | return lookup_die; |
19741 | } | |
19742 | ||
348e048f DE |
19743 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19744 | except in the case of .debug_types DIEs which do not reference | |
19745 | outside their CU (they do however referencing other types via | |
55f1336d | 19746 | DW_FORM_ref_sig8). */ |
72bf9492 | 19747 | |
122cf0f2 | 19748 | static const struct cu_partial_die_info |
9c541725 | 19749 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19750 | { |
976ca316 SM |
19751 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19752 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19753 | struct partial_die_info *pd = NULL; |
72bf9492 | 19754 | |
36586728 | 19755 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19756 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19757 | { |
d590ff25 | 19758 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19759 | if (pd != NULL) |
fb816e8b | 19760 | return { cu, pd }; |
0d99eb77 DE |
19761 | /* We missed recording what we needed. |
19762 | Load all dies and try again. */ | |
5afb4e99 | 19763 | } |
0d99eb77 DE |
19764 | else |
19765 | { | |
19766 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19767 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19768 | { |
9d8780f0 SM |
19769 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19770 | " external reference to offset %s [in module %s].\n"), | |
19771 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19772 | bfd_get_filename (objfile->obfd)); |
19773 | } | |
7188ed02 SM |
19774 | dwarf2_per_cu_data *per_cu |
19775 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19776 | per_objfile); |
72bf9492 | 19777 | |
976ca316 | 19778 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19779 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19780 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19781 | |
976ca316 | 19782 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19783 | |
19784 | cu->last_used = 0; | |
19785 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19786 | } |
5afb4e99 | 19787 | |
dee91e82 DE |
19788 | /* If we didn't find it, and not all dies have been loaded, |
19789 | load them all and try again. */ | |
19790 | ||
7188ed02 | 19791 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19792 | { |
7188ed02 | 19793 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19794 | |
19795 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19796 | THIS_CU->cu may already be in use. So we can't just free it and | |
19797 | replace its DIEs with the ones we read in. Instead, we leave those | |
19798 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19799 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19800 | set. */ | |
976ca316 | 19801 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19802 | |
7188ed02 | 19803 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19804 | } |
19805 | ||
19806 | if (pd == NULL) | |
521894aa | 19807 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19808 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19809 | return { cu, pd }; |
72bf9492 DJ |
19810 | } |
19811 | ||
abc72ce4 DE |
19812 | /* See if we can figure out if the class lives in a namespace. We do |
19813 | this by looking for a member function; its demangled name will | |
19814 | contain namespace info, if there is any. */ | |
19815 | ||
19816 | static void | |
19817 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19818 | struct dwarf2_cu *cu) | |
19819 | { | |
19820 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19821 | what template types look like, because the demangler | |
19822 | frequently doesn't give the same name as the debug info. We | |
19823 | could fix this by only using the demangled name to get the | |
19824 | prefix (but see comment in read_structure_type). */ | |
19825 | ||
19826 | struct partial_die_info *real_pdi; | |
19827 | struct partial_die_info *child_pdi; | |
19828 | ||
19829 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19830 | we should not do this. We'll prepend the parent's fully qualified | |
19831 | name when we create the partial symbol. */ | |
19832 | ||
19833 | real_pdi = struct_pdi; | |
19834 | while (real_pdi->has_specification) | |
fb816e8b | 19835 | { |
122cf0f2 AB |
19836 | auto res = find_partial_die (real_pdi->spec_offset, |
19837 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19838 | real_pdi = res.pdi; |
19839 | cu = res.cu; | |
19840 | } | |
abc72ce4 DE |
19841 | |
19842 | if (real_pdi->die_parent != NULL) | |
19843 | return; | |
19844 | ||
19845 | for (child_pdi = struct_pdi->die_child; | |
19846 | child_pdi != NULL; | |
19847 | child_pdi = child_pdi->die_sibling) | |
19848 | { | |
19849 | if (child_pdi->tag == DW_TAG_subprogram | |
19850 | && child_pdi->linkage_name != NULL) | |
19851 | { | |
43816ebc | 19852 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19853 | (cu->language_defn->class_name_from_physname |
19854 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19855 | if (actual_class_name != NULL) |
19856 | { | |
5e22e966 | 19857 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19858 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19859 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19860 | } |
19861 | break; | |
19862 | } | |
19863 | } | |
19864 | } | |
19865 | ||
25c11aca TV |
19866 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19867 | attribute. */ | |
19868 | ||
19869 | static bool | |
19870 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19871 | { | |
19872 | switch (tag) | |
19873 | { | |
19874 | case DW_TAG_constant: | |
19875 | case DW_TAG_enumerator: | |
19876 | case DW_TAG_formal_parameter: | |
19877 | case DW_TAG_template_value_param: | |
19878 | case DW_TAG_variable: | |
19879 | return true; | |
19880 | } | |
19881 | ||
19882 | return false; | |
19883 | } | |
19884 | ||
52356b79 YQ |
19885 | void |
19886 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19887 | { |
abc72ce4 DE |
19888 | /* Once we've fixed up a die, there's no point in doing so again. |
19889 | This also avoids a memory leak if we were to call | |
19890 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19891 | if (fixup_called) |
abc72ce4 DE |
19892 | return; |
19893 | ||
72bf9492 DJ |
19894 | /* If we found a reference attribute and the DIE has no name, try |
19895 | to find a name in the referred to DIE. */ | |
19896 | ||
7d00ffec | 19897 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19898 | { |
19899 | struct partial_die_info *spec_die; | |
72bf9492 | 19900 | |
122cf0f2 | 19901 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19902 | spec_die = res.pdi; |
19903 | cu = res.cu; | |
72bf9492 | 19904 | |
52356b79 | 19905 | spec_die->fixup (cu); |
72bf9492 | 19906 | |
7d00ffec | 19907 | if (spec_die->raw_name) |
72bf9492 | 19908 | { |
7d00ffec TT |
19909 | raw_name = spec_die->raw_name; |
19910 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19911 | |
19912 | /* Copy DW_AT_external attribute if it is set. */ | |
19913 | if (spec_die->is_external) | |
52356b79 | 19914 | is_external = spec_die->is_external; |
72bf9492 DJ |
19915 | } |
19916 | } | |
19917 | ||
25c11aca TV |
19918 | if (!has_const_value && has_specification |
19919 | && can_have_DW_AT_const_value_p (tag)) | |
19920 | { | |
19921 | struct partial_die_info *spec_die; | |
19922 | ||
19923 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19924 | spec_die = res.pdi; | |
19925 | cu = res.cu; | |
19926 | ||
19927 | spec_die->fixup (cu); | |
19928 | ||
19929 | if (spec_die->has_const_value) | |
19930 | { | |
19931 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19932 | has_const_value = spec_die->has_const_value; | |
19933 | } | |
19934 | } | |
19935 | ||
72bf9492 | 19936 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19937 | |
7d00ffec TT |
19938 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19939 | { | |
19940 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19941 | canonical_name = 1; | |
19942 | } | |
72bf9492 | 19943 | |
abc72ce4 DE |
19944 | /* If there is no parent die to provide a namespace, and there are |
19945 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19946 | name. */ |
abc72ce4 | 19947 | if (cu->language == language_cplus |
5e22e966 | 19948 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19949 | && die_parent == NULL |
19950 | && has_children | |
19951 | && (tag == DW_TAG_class_type | |
19952 | || tag == DW_TAG_structure_type | |
19953 | || tag == DW_TAG_union_type)) | |
19954 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19955 | |
53832f31 TT |
19956 | /* GCC might emit a nameless struct or union that has a linkage |
19957 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19958 | if (raw_name == NULL |
52356b79 YQ |
19959 | && (tag == DW_TAG_class_type |
19960 | || tag == DW_TAG_interface_type | |
19961 | || tag == DW_TAG_structure_type | |
19962 | || tag == DW_TAG_union_type) | |
19963 | && linkage_name != NULL) | |
53832f31 | 19964 | { |
43816ebc TT |
19965 | gdb::unique_xmalloc_ptr<char> demangled |
19966 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19967 | if (demangled != nullptr) | |
53832f31 | 19968 | { |
96408a79 SA |
19969 | const char *base; |
19970 | ||
19971 | /* Strip any leading namespaces/classes, keep only the base name. | |
19972 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19973 | base = strrchr (demangled.get (), ':'); |
19974 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19975 | base++; |
19976 | else | |
43816ebc | 19977 | base = demangled.get (); |
96408a79 | 19978 | |
5e22e966 | 19979 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19980 | raw_name = objfile->intern (base); |
19981 | canonical_name = 1; | |
53832f31 TT |
19982 | } |
19983 | } | |
19984 | ||
52356b79 | 19985 | fixup_called = 1; |
72bf9492 DJ |
19986 | } |
19987 | ||
d0ce17d8 | 19988 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
19989 | contents from the given SECTION in the HEADER. |
19990 | ||
19991 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 19992 | static void |
d0ce17d8 | 19993 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
19994 | struct dwarf2_section_info *section, |
19995 | sect_offset header_offset) | |
41144253 | 19996 | { |
19997 | unsigned int bytes_read; | |
19998 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
19999 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
20000 | ||
41144253 | 20001 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
20002 | info_ptr += bytes_read; | |
a1c40103 | 20003 | |
41144253 | 20004 | header->version = read_2_bytes (abfd, info_ptr); |
20005 | info_ptr += 2; | |
a1c40103 | 20006 | |
41144253 | 20007 | header->addr_size = read_1_byte (abfd, info_ptr); |
20008 | info_ptr += 1; | |
a1c40103 | 20009 | |
41144253 | 20010 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
20011 | info_ptr += 1; | |
a1c40103 | 20012 | |
41144253 | 20013 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
20014 | } | |
20015 | ||
20016 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20017 | static ULONGEST | |
20018 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20019 | { | |
20020 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20021 | the header. The header consists of the following entities- | |
20022 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20023 | bit format) | |
20024 | 2. version (2 bytes) | |
20025 | 3. address size (1 byte) | |
20026 | 4. segment selector size (1 byte) | |
20027 | 5. offset entry count (4 bytes) | |
20028 | These sizes are derived as per the DWARFv5 standard. */ | |
20029 | if (cu->dwo_unit != nullptr) | |
20030 | { | |
20031 | if (cu->header.initial_length_size == 4) | |
20032 | return LOCLIST_HEADER_SIZE32; | |
20033 | return LOCLIST_HEADER_SIZE64; | |
20034 | } | |
20035 | return cu->loclist_base; | |
20036 | } | |
20037 | ||
20038 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20039 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
20040 | |
20041 | static sect_offset | |
41144253 | 20042 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
20043 | { | |
976ca316 SM |
20044 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20045 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20046 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
20047 | ULONGEST loclist_header_size = |
20048 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
20049 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 20050 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
20051 | |
20052 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
20053 | ULONGEST start_offset = | |
20054 | loclist_base + loclist_index * cu->header.offset_size; | |
20055 | ||
a1c40103 | 20056 | /* Get loclists section. */ |
41144253 | 20057 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20058 | ||
a1c40103 | 20059 | /* Read the loclists section content. */ |
41144253 | 20060 | section->read (objfile); |
20061 | if (section->buffer == NULL) | |
a0c1eeba SM |
20062 | error (_("DW_FORM_loclistx used without .debug_loclists " |
20063 | "section [in module %s]"), objfile_name (objfile)); | |
20064 | ||
a1c40103 SM |
20065 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
20066 | so if loclist_base is smaller than the header size, we have a problem. */ | |
20067 | if (loclist_base < loclist_header_size) | |
20068 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
20069 | objfile_name (objfile)); | |
20070 | ||
20071 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 20072 | struct loclists_rnglists_header header; |
a1c40103 SM |
20073 | read_loclists_rnglists_header (&header, section, |
20074 | (sect_offset) (loclist_base - loclist_header_size)); | |
20075 | ||
20076 | /* Verify the loclist index is valid. */ | |
41144253 | 20077 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
20078 | error (_("DW_FORM_loclistx pointing outside of " |
20079 | ".debug_loclists offset array [in module %s]"), | |
20080 | objfile_name (objfile)); | |
20081 | ||
05787bad SM |
20082 | /* Validate that reading won't go beyond the end of the section. */ |
20083 | if (start_offset + cu->header.offset_size > section->size) | |
20084 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
20085 | ".debug_loclists section [in module %s]"), | |
20086 | objfile_name (objfile)); | |
20087 | ||
20088 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 20089 | |
20090 | if (cu->header.offset_size == 4) | |
e57933dc | 20091 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 20092 | else |
e57933dc | 20093 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 20094 | } |
20095 | ||
d0ce17d8 CT |
20096 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20097 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
20098 | |
20099 | static sect_offset | |
d0ce17d8 CT |
20100 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
20101 | dwarf_tag tag) | |
20102 | { | |
20103 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20104 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20105 | bfd *abfd = objfile->obfd; | |
20106 | ULONGEST rnglist_header_size = | |
20107 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20108 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
20109 | |
20110 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
20111 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
20112 | doesn't apply. */ | |
d0ce17d8 | 20113 | ULONGEST rnglist_base = |
2b0c7f41 | 20114 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
20115 | |
20116 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
20117 | ULONGEST start_offset = |
20118 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20119 | ||
20120 | /* Get rnglists section. */ | |
20121 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20122 | ||
20123 | /* Read the rnglists section content. */ | |
20124 | section->read (objfile); | |
20125 | if (section->buffer == nullptr) | |
20126 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20127 | "[in module %s]"), | |
20128 | objfile_name (objfile)); | |
20129 | ||
a1c40103 SM |
20130 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
20131 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
20132 | if (rnglist_base < rnglist_header_size) | |
20133 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
20134 | objfile_name (objfile)); | |
20135 | ||
20136 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 20137 | struct loclists_rnglists_header header; |
a1c40103 SM |
20138 | read_loclists_rnglists_header (&header, section, |
20139 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20140 | ||
20141 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20142 | if (rnglist_index >= header.offset_entry_count) |
20143 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20144 | ".debug_rnglists offset array [in module %s]"), | |
20145 | objfile_name (objfile)); | |
20146 | ||
d0ce17d8 | 20147 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20148 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20149 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20150 | ".debug_rnglists section [in module %s]"), | |
20151 | objfile_name (objfile)); | |
20152 | ||
20153 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20154 | ||
20155 | if (cu->header.offset_size == 4) | |
e57933dc | 20156 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20157 | else |
e57933dc | 20158 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20159 | } |
20160 | ||
18a8505e AT |
20161 | /* Process the attributes that had to be skipped in the first round. These |
20162 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20163 | They could not have been processed in the first round, because at the time | |
20164 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20165 | static void |
20166 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20167 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20168 | { |
20169 | struct dwarf2_cu *cu = reader->cu; | |
20170 | switch (attr->form) | |
20171 | { | |
20172 | case DW_FORM_addrx: | |
20173 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20174 | attr->set_address (read_addr_index (cu, |
20175 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20176 | break; |
41144253 | 20177 | case DW_FORM_loclistx: |
b1829e1b | 20178 | { |
e57933dc | 20179 | sect_offset loclists_sect_off |
b1829e1b SM |
20180 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20181 | ||
e57933dc | 20182 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20183 | } |
20184 | break; | |
d0ce17d8 | 20185 | case DW_FORM_rnglistx: |
b1829e1b | 20186 | { |
e57933dc | 20187 | sect_offset rnglists_sect_off |
b1829e1b SM |
20188 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20189 | ||
e57933dc | 20190 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20191 | } |
dda83cd7 | 20192 | break; |
18a8505e AT |
20193 | case DW_FORM_strx: |
20194 | case DW_FORM_strx1: | |
20195 | case DW_FORM_strx2: | |
20196 | case DW_FORM_strx3: | |
20197 | case DW_FORM_strx4: | |
20198 | case DW_FORM_GNU_str_index: | |
20199 | { | |
fe56917a | 20200 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20201 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20202 | if (reader->dwo_file != NULL) |
c6481205 TT |
20203 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20204 | str_index)); | |
18a8505e | 20205 | else |
c6481205 TT |
20206 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20207 | str_index)); | |
18a8505e AT |
20208 | break; |
20209 | } | |
20210 | default: | |
20211 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20212 | } | |
20213 | } | |
20214 | ||
a8329558 | 20215 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20216 | |
d521ce57 | 20217 | static const gdb_byte * |
dee91e82 DE |
20218 | read_attribute_value (const struct die_reader_specs *reader, |
20219 | struct attribute *attr, unsigned form, | |
7a5f294d | 20220 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20221 | { |
dee91e82 | 20222 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20223 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20224 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20225 | bfd *abfd = reader->abfd; |
e7c27a73 | 20226 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20227 | unsigned int bytes_read; |
20228 | struct dwarf_block *blk; | |
20229 | ||
aead7601 | 20230 | attr->form = (enum dwarf_form) form; |
a8329558 | 20231 | switch (form) |
c906108c | 20232 | { |
c906108c | 20233 | case DW_FORM_ref_addr: |
7c290a04 TT |
20234 | if (cu_header->version == 2) |
20235 | attr->set_unsigned (cu_header->read_address (abfd, info_ptr, | |
414ad644 | 20236 | &bytes_read)); |
ae411497 | 20237 | else |
7c290a04 | 20238 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20239 | &bytes_read)); |
ae411497 TT |
20240 | info_ptr += bytes_read; |
20241 | break; | |
36586728 | 20242 | case DW_FORM_GNU_ref_alt: |
7c290a04 | 20243 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20244 | &bytes_read)); |
36586728 TT |
20245 | info_ptr += bytes_read; |
20246 | break; | |
ae411497 | 20247 | case DW_FORM_addr: |
08feed99 TT |
20248 | { |
20249 | struct gdbarch *gdbarch = objfile->arch (); | |
7c290a04 | 20250 | CORE_ADDR addr = cu_header->read_address (abfd, info_ptr, &bytes_read); |
36d378cf TT |
20251 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); |
20252 | attr->set_address (addr); | |
08feed99 TT |
20253 | info_ptr += bytes_read; |
20254 | } | |
c906108c SS |
20255 | break; |
20256 | case DW_FORM_block2: | |
7b5a2f43 | 20257 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20258 | blk->size = read_2_bytes (abfd, info_ptr); |
20259 | info_ptr += 2; | |
20260 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20261 | info_ptr += blk->size; | |
9d2246fc | 20262 | attr->set_block (blk); |
c906108c SS |
20263 | break; |
20264 | case DW_FORM_block4: | |
7b5a2f43 | 20265 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20266 | blk->size = read_4_bytes (abfd, info_ptr); |
20267 | info_ptr += 4; | |
20268 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20269 | info_ptr += blk->size; | |
9d2246fc | 20270 | attr->set_block (blk); |
c906108c SS |
20271 | break; |
20272 | case DW_FORM_data2: | |
414ad644 | 20273 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20274 | info_ptr += 2; |
20275 | break; | |
20276 | case DW_FORM_data4: | |
414ad644 | 20277 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20278 | info_ptr += 4; |
20279 | break; | |
20280 | case DW_FORM_data8: | |
414ad644 | 20281 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20282 | info_ptr += 8; |
20283 | break; | |
0224619f JK |
20284 | case DW_FORM_data16: |
20285 | blk = dwarf_alloc_block (cu); | |
20286 | blk->size = 16; | |
20287 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20288 | info_ptr += 16; | |
9d2246fc | 20289 | attr->set_block (blk); |
0224619f | 20290 | break; |
2dc7f7b3 | 20291 | case DW_FORM_sec_offset: |
7c290a04 | 20292 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20293 | &bytes_read)); |
2dc7f7b3 TT |
20294 | info_ptr += bytes_read; |
20295 | break; | |
41144253 | 20296 | case DW_FORM_loclistx: |
20297 | { | |
7a5f294d TT |
20298 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20299 | &bytes_read)); | |
20300 | info_ptr += bytes_read; | |
41144253 | 20301 | } |
20302 | break; | |
c906108c | 20303 | case DW_FORM_string: |
c6481205 TT |
20304 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20305 | &bytes_read)); | |
c906108c SS |
20306 | info_ptr += bytes_read; |
20307 | break; | |
4bdf3d34 | 20308 | case DW_FORM_strp: |
36586728 TT |
20309 | if (!cu->per_cu->is_dwz) |
20310 | { | |
c6481205 TT |
20311 | attr->set_string_noncanonical |
20312 | (read_indirect_string (per_objfile, | |
20313 | abfd, info_ptr, cu_header, | |
20314 | &bytes_read)); | |
36586728 TT |
20315 | info_ptr += bytes_read; |
20316 | break; | |
20317 | } | |
20318 | /* FALLTHROUGH */ | |
43988095 JK |
20319 | case DW_FORM_line_strp: |
20320 | if (!cu->per_cu->is_dwz) | |
20321 | { | |
c6481205 TT |
20322 | attr->set_string_noncanonical |
20323 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20324 | &bytes_read)); | |
43988095 JK |
20325 | info_ptr += bytes_read; |
20326 | break; | |
20327 | } | |
20328 | /* FALLTHROUGH */ | |
36586728 TT |
20329 | case DW_FORM_GNU_strp_alt: |
20330 | { | |
a7308ce0 | 20331 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
8266302d TT |
20332 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20333 | &bytes_read); | |
36586728 | 20334 | |
c6481205 TT |
20335 | attr->set_string_noncanonical |
20336 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20337 | info_ptr += bytes_read; |
20338 | } | |
4bdf3d34 | 20339 | break; |
2dc7f7b3 | 20340 | case DW_FORM_exprloc: |
c906108c | 20341 | case DW_FORM_block: |
7b5a2f43 | 20342 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20343 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20344 | info_ptr += bytes_read; | |
20345 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20346 | info_ptr += blk->size; | |
9d2246fc | 20347 | attr->set_block (blk); |
c906108c SS |
20348 | break; |
20349 | case DW_FORM_block1: | |
7b5a2f43 | 20350 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20351 | blk->size = read_1_byte (abfd, info_ptr); |
20352 | info_ptr += 1; | |
20353 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20354 | info_ptr += blk->size; | |
9d2246fc | 20355 | attr->set_block (blk); |
c906108c SS |
20356 | break; |
20357 | case DW_FORM_data1: | |
c906108c | 20358 | case DW_FORM_flag: |
414ad644 | 20359 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20360 | info_ptr += 1; |
20361 | break; | |
2dc7f7b3 | 20362 | case DW_FORM_flag_present: |
414ad644 | 20363 | attr->set_unsigned (1); |
2dc7f7b3 | 20364 | break; |
c906108c | 20365 | case DW_FORM_sdata: |
1bc397c5 | 20366 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20367 | info_ptr += bytes_read; |
20368 | break; | |
18a8505e | 20369 | case DW_FORM_rnglistx: |
7a5f294d TT |
20370 | { |
20371 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20372 | &bytes_read)); | |
20373 | info_ptr += bytes_read; | |
20374 | } | |
20375 | break; | |
d0ce17d8 | 20376 | case DW_FORM_udata: |
414ad644 | 20377 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20378 | info_ptr += bytes_read; |
20379 | break; | |
20380 | case DW_FORM_ref1: | |
7c290a04 | 20381 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20382 | + read_1_byte (abfd, info_ptr))); |
c906108c SS |
20383 | info_ptr += 1; |
20384 | break; | |
20385 | case DW_FORM_ref2: | |
7c290a04 | 20386 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20387 | + read_2_bytes (abfd, info_ptr))); |
c906108c SS |
20388 | info_ptr += 2; |
20389 | break; | |
20390 | case DW_FORM_ref4: | |
7c290a04 | 20391 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20392 | + read_4_bytes (abfd, info_ptr))); |
c906108c SS |
20393 | info_ptr += 4; |
20394 | break; | |
613e1657 | 20395 | case DW_FORM_ref8: |
7c290a04 | 20396 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20397 | + read_8_bytes (abfd, info_ptr))); |
613e1657 KB |
20398 | info_ptr += 8; |
20399 | break; | |
55f1336d | 20400 | case DW_FORM_ref_sig8: |
630ed6b9 | 20401 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20402 | info_ptr += 8; |
20403 | break; | |
c906108c | 20404 | case DW_FORM_ref_udata: |
7c290a04 | 20405 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 TT |
20406 | + read_unsigned_leb128 (abfd, info_ptr, |
20407 | &bytes_read))); | |
c906108c SS |
20408 | info_ptr += bytes_read; |
20409 | break; | |
c906108c | 20410 | case DW_FORM_indirect: |
a8329558 KW |
20411 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20412 | info_ptr += bytes_read; | |
43988095 JK |
20413 | if (form == DW_FORM_implicit_const) |
20414 | { | |
20415 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20416 | info_ptr += bytes_read; | |
20417 | } | |
20418 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20419 | info_ptr); |
43988095 JK |
20420 | break; |
20421 | case DW_FORM_implicit_const: | |
1bc397c5 | 20422 | attr->set_signed (implicit_const); |
a8329558 | 20423 | break; |
336d760d | 20424 | case DW_FORM_addrx: |
3019eac3 | 20425 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20426 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20427 | &bytes_read)); | |
3019eac3 DE |
20428 | info_ptr += bytes_read; |
20429 | break; | |
cf532bd1 | 20430 | case DW_FORM_strx: |
15f18d14 AT |
20431 | case DW_FORM_strx1: |
20432 | case DW_FORM_strx2: | |
20433 | case DW_FORM_strx3: | |
20434 | case DW_FORM_strx4: | |
3019eac3 | 20435 | case DW_FORM_GNU_str_index: |
3019eac3 | 20436 | { |
15f18d14 AT |
20437 | ULONGEST str_index; |
20438 | if (form == DW_FORM_strx1) | |
20439 | { | |
20440 | str_index = read_1_byte (abfd, info_ptr); | |
20441 | info_ptr += 1; | |
20442 | } | |
20443 | else if (form == DW_FORM_strx2) | |
20444 | { | |
20445 | str_index = read_2_bytes (abfd, info_ptr); | |
20446 | info_ptr += 2; | |
20447 | } | |
20448 | else if (form == DW_FORM_strx3) | |
20449 | { | |
20450 | str_index = read_3_bytes (abfd, info_ptr); | |
20451 | info_ptr += 3; | |
20452 | } | |
20453 | else if (form == DW_FORM_strx4) | |
20454 | { | |
20455 | str_index = read_4_bytes (abfd, info_ptr); | |
20456 | info_ptr += 4; | |
20457 | } | |
20458 | else | |
20459 | { | |
20460 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20461 | info_ptr += bytes_read; | |
20462 | } | |
fe56917a | 20463 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20464 | } |
3019eac3 | 20465 | break; |
c906108c | 20466 | default: |
8a3fe4f8 | 20467 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20468 | dwarf_form_name (form), |
20469 | bfd_get_filename (abfd)); | |
c906108c | 20470 | } |
28e94949 | 20471 | |
36586728 | 20472 | /* Super hack. */ |
cd6c91b4 | 20473 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20474 | attr->form = DW_FORM_GNU_ref_alt; |
20475 | ||
28e94949 JB |
20476 | /* We have seen instances where the compiler tried to emit a byte |
20477 | size attribute of -1 which ended up being encoded as an unsigned | |
20478 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20479 | an object of this size seems pretty unlikely so we can relatively | |
20480 | safely treat these cases as if the size attribute was invalid and | |
20481 | treat them as zero by default. */ | |
20482 | if (attr->name == DW_AT_byte_size | |
20483 | && form == DW_FORM_data4 | |
529908cb | 20484 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20485 | { |
20486 | complaint | |
dda83cd7 SM |
20487 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20488 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20489 | attr->set_unsigned (0); |
01c66ae6 | 20490 | } |
28e94949 | 20491 | |
c906108c SS |
20492 | return info_ptr; |
20493 | } | |
20494 | ||
a8329558 KW |
20495 | /* Read an attribute described by an abbreviated attribute. */ |
20496 | ||
d521ce57 | 20497 | static const gdb_byte * |
dee91e82 | 20498 | read_attribute (const struct die_reader_specs *reader, |
4444f407 | 20499 | struct attribute *attr, const struct attr_abbrev *abbrev, |
7a5f294d | 20500 | const gdb_byte *info_ptr) |
a8329558 KW |
20501 | { |
20502 | attr->name = abbrev->name; | |
c6481205 | 20503 | attr->string_is_canonical = 0; |
fe56917a | 20504 | attr->requires_reprocessing = 0; |
43988095 | 20505 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20506 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20507 | } |
20508 | ||
43988095 JK |
20509 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20510 | ||
20511 | static const char * | |
976ca316 | 20512 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20513 | LONGEST str_offset) |
43988095 | 20514 | { |
976ca316 SM |
20515 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20516 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20517 | } |
20518 | ||
43988095 JK |
20519 | /* Return pointer to string at .debug_str offset as read from BUF. |
20520 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20521 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20522 | ||
d521ce57 | 20523 | static const char * |
976ca316 | 20524 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20525 | const gdb_byte *buf, |
cf2c3c16 TT |
20526 | const struct comp_unit_head *cu_header, |
20527 | unsigned int *bytes_read_ptr) | |
20528 | { | |
8266302d | 20529 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20530 | |
976ca316 | 20531 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20532 | } |
20533 | ||
86c0bb4c | 20534 | /* See read.h. */ |
43988095 | 20535 | |
86c0bb4c TT |
20536 | const char * |
20537 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20538 | const struct comp_unit_head *cu_header, |
20539 | unsigned int *bytes_read_ptr) | |
43988095 | 20540 | { |
86c0bb4c | 20541 | bfd *abfd = objfile->obfd; |
8266302d | 20542 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20543 | |
5989a64e | 20544 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20545 | } |
20546 | ||
3019eac3 | 20547 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20548 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20549 | ADDR_SIZE is the size of addresses from the CU header. */ |
20550 | ||
20551 | static CORE_ADDR | |
976ca316 SM |
20552 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20553 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20554 | { |
976ca316 | 20555 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20556 | bfd *abfd = objfile->obfd; |
20557 | const gdb_byte *info_ptr; | |
18a8505e | 20558 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20559 | |
976ca316 SM |
20560 | per_objfile->per_bfd->addr.read (objfile); |
20561 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20562 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20563 | objfile_name (objfile)); |
18a8505e | 20564 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20565 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20566 | error (_("DW_FORM_addr_index pointing outside of " |
20567 | ".debug_addr section [in module %s]"), | |
4262abfb | 20568 | objfile_name (objfile)); |
976ca316 SM |
20569 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20570 | + addr_index * addr_size); | |
3019eac3 DE |
20571 | if (addr_size == 4) |
20572 | return bfd_get_32 (abfd, info_ptr); | |
20573 | else | |
20574 | return bfd_get_64 (abfd, info_ptr); | |
20575 | } | |
20576 | ||
20577 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20578 | ||
20579 | static CORE_ADDR | |
20580 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20581 | { | |
5e22e966 | 20582 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20583 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20584 | } |
20585 | ||
20586 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20587 | ||
20588 | static CORE_ADDR | |
d521ce57 | 20589 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20590 | unsigned int *bytes_read) |
20591 | { | |
5e22e966 | 20592 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20593 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20594 | ||
20595 | return read_addr_index (cu, addr_index); | |
20596 | } | |
20597 | ||
450a1bfc | 20598 | /* See read.h. */ |
3019eac3 DE |
20599 | |
20600 | CORE_ADDR | |
82ca3f51 | 20601 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20602 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20603 | unsigned int addr_index) |
3019eac3 | 20604 | { |
976ca316 | 20605 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20606 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20607 | int addr_size; |
20608 | ||
3019eac3 DE |
20609 | /* We need addr_base and addr_size. |
20610 | If we don't have PER_CU->cu, we have to get it. | |
20611 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20612 | which at this point doesn't seem justified: it's not clear how frequently | |
20613 | it would get used and it would increase the size of every PER_CU. | |
20614 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20615 | so we're not in uncharted territory here. | |
20616 | Alas we need to be a bit more complicated as addr_base is contained | |
20617 | in the DIE. | |
20618 | ||
20619 | We don't need to read the entire CU(/TU). | |
20620 | We just need the header and top level die. | |
a1b64ce1 | 20621 | |
3019eac3 | 20622 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20623 | For now we skip this optimization. */ |
3019eac3 DE |
20624 | |
20625 | if (cu != NULL) | |
20626 | { | |
20627 | addr_base = cu->addr_base; | |
20628 | addr_size = cu->header.addr_size; | |
20629 | } | |
20630 | else | |
20631 | { | |
976ca316 | 20632 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20633 | addr_base = reader.cu->addr_base; |
20634 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20635 | } |
20636 | ||
976ca316 | 20637 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20638 | } |
20639 | ||
18a8505e AT |
20640 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20641 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20642 | DWO file. */ | |
3019eac3 | 20643 | |
d521ce57 | 20644 | static const char * |
18a8505e AT |
20645 | read_str_index (struct dwarf2_cu *cu, |
20646 | struct dwarf2_section_info *str_section, | |
20647 | struct dwarf2_section_info *str_offsets_section, | |
20648 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20649 | { |
976ca316 SM |
20650 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20651 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20652 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20653 | bfd *abfd = objfile->obfd; |
d521ce57 | 20654 | const gdb_byte *info_ptr; |
3019eac3 | 20655 | ULONGEST str_offset; |
cf532bd1 | 20656 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20657 | |
96b79293 TT |
20658 | str_section->read (objfile); |
20659 | str_offsets_section->read (objfile); | |
73869dc2 | 20660 | if (str_section->buffer == NULL) |
18a8505e | 20661 | error (_("%s used without %s section" |
9d8780f0 | 20662 | " in CU at offset %s [in module %s]"), |
96b79293 | 20663 | form_name, str_section->get_name (), |
dda83cd7 | 20664 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20665 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20666 | error (_("%s used without %s section" |
9d8780f0 | 20667 | " in CU at offset %s [in module %s]"), |
96b79293 | 20668 | form_name, str_section->get_name (), |
dda83cd7 | 20669 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20670 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20671 | + str_offsets_base |
3019eac3 DE |
20672 | + str_index * cu->header.offset_size); |
20673 | if (cu->header.offset_size == 4) | |
20674 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20675 | else | |
20676 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20677 | if (str_offset >= str_section->size) |
57d63ce2 | 20678 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20679 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20680 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20681 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20682 | } |
20683 | ||
18a8505e AT |
20684 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20685 | ||
20686 | static const char * | |
20687 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20688 | { | |
20689 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20690 | ? reader->cu->header.addr_size : 0; | |
20691 | return read_str_index (reader->cu, | |
20692 | &reader->dwo_file->sections.str, | |
20693 | &reader->dwo_file->sections.str_offsets, | |
20694 | str_offsets_base, str_index); | |
20695 | } | |
20696 | ||
20697 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20698 | ||
20699 | static const char * | |
20700 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20701 | { | |
5e22e966 | 20702 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20703 | const char *objf_name = objfile_name (objfile); |
20704 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20705 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20706 | ||
20707 | if (!cu->str_offsets_base.has_value ()) | |
20708 | error (_("%s used in Fission stub without %s" | |
20709 | " in CU at offset 0x%lx [in module %s]"), | |
20710 | form_name, str_offsets_attr_name, | |
20711 | (long) cu->header.offset_size, objf_name); | |
20712 | ||
20713 | return read_str_index (cu, | |
5e22e966 SM |
20714 | &cu->per_objfile->per_bfd->str, |
20715 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20716 | *cu->str_offsets_base, str_index); |
20717 | } | |
20718 | ||
3019eac3 DE |
20719 | /* Return the length of an LEB128 number in BUF. */ |
20720 | ||
20721 | static int | |
20722 | leb128_size (const gdb_byte *buf) | |
20723 | { | |
20724 | const gdb_byte *begin = buf; | |
20725 | gdb_byte byte; | |
20726 | ||
20727 | while (1) | |
20728 | { | |
20729 | byte = *buf++; | |
20730 | if ((byte & 128) == 0) | |
20731 | return buf - begin; | |
20732 | } | |
20733 | } | |
20734 | ||
c906108c | 20735 | static void |
e142c38c | 20736 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20737 | { |
20738 | switch (lang) | |
20739 | { | |
20740 | case DW_LANG_C89: | |
76bee0cc | 20741 | case DW_LANG_C99: |
0cfd832f | 20742 | case DW_LANG_C11: |
c906108c | 20743 | case DW_LANG_C: |
d1be3247 | 20744 | case DW_LANG_UPC: |
e142c38c | 20745 | cu->language = language_c; |
c906108c | 20746 | break; |
9c37b5ae | 20747 | case DW_LANG_Java: |
c906108c | 20748 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20749 | case DW_LANG_C_plus_plus_11: |
20750 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20751 | cu->language = language_cplus; |
c906108c | 20752 | break; |
6aecb9c2 JB |
20753 | case DW_LANG_D: |
20754 | cu->language = language_d; | |
20755 | break; | |
c906108c SS |
20756 | case DW_LANG_Fortran77: |
20757 | case DW_LANG_Fortran90: | |
b21b22e0 | 20758 | case DW_LANG_Fortran95: |
f7de9aab MW |
20759 | case DW_LANG_Fortran03: |
20760 | case DW_LANG_Fortran08: | |
e142c38c | 20761 | cu->language = language_fortran; |
c906108c | 20762 | break; |
a766d390 DE |
20763 | case DW_LANG_Go: |
20764 | cu->language = language_go; | |
20765 | break; | |
c906108c | 20766 | case DW_LANG_Mips_Assembler: |
e142c38c | 20767 | cu->language = language_asm; |
c906108c SS |
20768 | break; |
20769 | case DW_LANG_Ada83: | |
8aaf0b47 | 20770 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20771 | cu->language = language_ada; |
20772 | break; | |
72019c9c GM |
20773 | case DW_LANG_Modula2: |
20774 | cu->language = language_m2; | |
20775 | break; | |
fe8e67fd PM |
20776 | case DW_LANG_Pascal83: |
20777 | cu->language = language_pascal; | |
20778 | break; | |
22566fbd DJ |
20779 | case DW_LANG_ObjC: |
20780 | cu->language = language_objc; | |
20781 | break; | |
c44af4eb TT |
20782 | case DW_LANG_Rust: |
20783 | case DW_LANG_Rust_old: | |
20784 | cu->language = language_rust; | |
20785 | break; | |
c906108c SS |
20786 | case DW_LANG_Cobol74: |
20787 | case DW_LANG_Cobol85: | |
c906108c | 20788 | default: |
e142c38c | 20789 | cu->language = language_minimal; |
c906108c SS |
20790 | break; |
20791 | } | |
e142c38c | 20792 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20793 | } |
20794 | ||
20795 | /* Return the named attribute or NULL if not there. */ | |
20796 | ||
20797 | static struct attribute * | |
e142c38c | 20798 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20799 | { |
a48e046c | 20800 | for (;;) |
c906108c | 20801 | { |
a48e046c TT |
20802 | unsigned int i; |
20803 | struct attribute *spec = NULL; | |
20804 | ||
20805 | for (i = 0; i < die->num_attrs; ++i) | |
20806 | { | |
20807 | if (die->attrs[i].name == name) | |
20808 | return &die->attrs[i]; | |
20809 | if (die->attrs[i].name == DW_AT_specification | |
20810 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20811 | spec = &die->attrs[i]; | |
20812 | } | |
20813 | ||
20814 | if (!spec) | |
20815 | break; | |
c906108c | 20816 | |
f2f0e013 | 20817 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20818 | } |
c5aa993b | 20819 | |
c906108c SS |
20820 | return NULL; |
20821 | } | |
20822 | ||
7d45c7c3 KB |
20823 | /* Return the string associated with a string-typed attribute, or NULL if it |
20824 | is either not found or is of an incorrect type. */ | |
20825 | ||
20826 | static const char * | |
20827 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20828 | { | |
20829 | struct attribute *attr; | |
20830 | const char *str = NULL; | |
20831 | ||
20832 | attr = dwarf2_attr (die, name, cu); | |
20833 | ||
20834 | if (attr != NULL) | |
20835 | { | |
95f982e5 | 20836 | str = attr->as_string (); |
e61108c9 | 20837 | if (str == nullptr) |
dda83cd7 | 20838 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20839 | "DIE at %s in module %s"), |
20840 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20841 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20842 | } |
20843 | ||
20844 | return str; | |
20845 | } | |
20846 | ||
a084a2a6 | 20847 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20848 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20849 | static const char * |
20850 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20851 | { | |
20852 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20853 | if (dwo_name == nullptr) | |
20854 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20855 | return dwo_name; | |
20856 | } | |
20857 | ||
05cf31d1 JB |
20858 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20859 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20860 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20861 | |
20862 | static int | |
20863 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20864 | { | |
20865 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20866 | ||
c45bc3f8 | 20867 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
20868 | } |
20869 | ||
3ca72b44 | 20870 | static int |
e142c38c | 20871 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20872 | { |
05cf31d1 JB |
20873 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20874 | which value is non-zero. However, we have to be careful with | |
20875 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20876 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20877 | end up accidently finding a declaration attribute that belongs | |
20878 | to a different DIE referenced by the specification attribute, | |
20879 | even though the given DIE does not have a declaration attribute. */ | |
20880 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20881 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20882 | } |
20883 | ||
63d06c5c | 20884 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20885 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20886 | containing the return value on output. If there is no |
20887 | specification, but there is an abstract origin, that is | |
20888 | returned. */ | |
63d06c5c DC |
20889 | |
20890 | static struct die_info * | |
f2f0e013 | 20891 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20892 | { |
f2f0e013 DJ |
20893 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20894 | *spec_cu); | |
63d06c5c | 20895 | |
edb3359d DJ |
20896 | if (spec_attr == NULL) |
20897 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20898 | ||
63d06c5c DC |
20899 | if (spec_attr == NULL) |
20900 | return NULL; | |
20901 | else | |
f2f0e013 | 20902 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20903 | } |
c906108c | 20904 | |
527f3840 JK |
20905 | /* Stub for free_line_header to match void * callback types. */ |
20906 | ||
20907 | static void | |
20908 | free_line_header_voidp (void *arg) | |
20909 | { | |
9a3c8263 | 20910 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20911 | |
fff8551c | 20912 | delete lh; |
527f3840 JK |
20913 | } |
20914 | ||
83769d0b | 20915 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20916 | |
20917 | static struct dwarf2_section_info * | |
20918 | get_debug_line_section (struct dwarf2_cu *cu) | |
20919 | { | |
20920 | struct dwarf2_section_info *section; | |
976ca316 | 20921 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20922 | |
20923 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20924 | DWO file. */ | |
20925 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20926 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20927 | else if (cu->per_cu->is_dwz) | |
20928 | { | |
a7308ce0 | 20929 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
36586728 TT |
20930 | |
20931 | section = &dwz->line; | |
20932 | } | |
20933 | else | |
976ca316 | 20934 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20935 | |
20936 | return section; | |
20937 | } | |
20938 | ||
debd256d | 20939 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20940 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20941 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20942 | Returns NULL if there is a problem reading the header, e.g., if it |
20943 | has a version we don't understand. | |
debd256d JB |
20944 | |
20945 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20946 | the returned object point into the dwarf line section buffer, |
20947 | and must not be freed. */ | |
ae2de4f8 | 20948 | |
fff8551c | 20949 | static line_header_up |
9c541725 | 20950 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20951 | { |
3019eac3 | 20952 | struct dwarf2_section_info *section; |
976ca316 | 20953 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20954 | |
36586728 | 20955 | section = get_debug_line_section (cu); |
976ca316 | 20956 | section->read (per_objfile->objfile); |
3019eac3 | 20957 | if (section->buffer == NULL) |
debd256d | 20958 | { |
3019eac3 | 20959 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20960 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20961 | else |
b98664d3 | 20962 | complaint (_("missing .debug_line section")); |
debd256d JB |
20963 | return 0; |
20964 | } | |
20965 | ||
0df7ad3a | 20966 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20967 | per_objfile, section, &cu->header); |
debd256d | 20968 | } |
c906108c | 20969 | |
c6da4cef | 20970 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20971 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20972 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20973 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20974 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20975 | |
d521ce57 | 20976 | static const char * |
7ba99d21 | 20977 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20978 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20979 | const char *comp_dir, |
20980 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20981 | { |
d521ce57 TT |
20982 | const char *include_name = fe.name; |
20983 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20984 | const char *pst_filename; |
c6da4cef DE |
20985 | int file_is_pst; |
20986 | ||
8c43009f | 20987 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20988 | |
c89b44cd | 20989 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20990 | if (!IS_ABSOLUTE_PATH (include_name) |
20991 | && (dir_name != NULL || comp_dir != NULL)) | |
20992 | { | |
20993 | /* Avoid creating a duplicate psymtab for PST. | |
20994 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20995 | Before we do the comparison, however, we need to account | |
20996 | for DIR_NAME and COMP_DIR. | |
20997 | First prepend dir_name (if non-NULL). If we still don't | |
20998 | have an absolute path prepend comp_dir (if non-NULL). | |
20999 | However, the directory we record in the include-file's | |
21000 | psymtab does not contain COMP_DIR (to match the | |
21001 | corresponding symtab(s)). | |
21002 | ||
21003 | Example: | |
21004 | ||
21005 | bash$ cd /tmp | |
21006 | bash$ gcc -g ./hello.c | |
21007 | include_name = "hello.c" | |
21008 | dir_name = "." | |
21009 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21010 | DW_AT_name = "./hello.c" |
21011 | ||
21012 | */ | |
c6da4cef DE |
21013 | |
21014 | if (dir_name != NULL) | |
21015 | { | |
c89b44cd TT |
21016 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21017 | include_name, (char *) NULL)); | |
21018 | include_name = name_holder->get (); | |
c6da4cef | 21019 | include_name_to_compare = include_name; |
c6da4cef DE |
21020 | } |
21021 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21022 | { | |
c89b44cd TT |
21023 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21024 | include_name, (char *) NULL)); | |
21025 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21026 | } |
21027 | } | |
21028 | ||
21029 | pst_filename = pst->filename; | |
c89b44cd | 21030 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21031 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21032 | { | |
c89b44cd TT |
21033 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21034 | pst_filename, (char *) NULL)); | |
21035 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21036 | } |
21037 | ||
1e3fad37 | 21038 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21039 | |
c6da4cef DE |
21040 | if (file_is_pst) |
21041 | return NULL; | |
21042 | return include_name; | |
21043 | } | |
21044 | ||
d9b3de22 DE |
21045 | /* State machine to track the state of the line number program. */ |
21046 | ||
6f77053d | 21047 | class lnp_state_machine |
d9b3de22 | 21048 | { |
6f77053d PA |
21049 | public: |
21050 | /* Initialize a machine state for the start of a line number | |
21051 | program. */ | |
804d2729 TT |
21052 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21053 | bool record_lines_p); | |
6f77053d | 21054 | |
8c43009f PA |
21055 | file_entry *current_file () |
21056 | { | |
21057 | /* lh->file_names is 0-based, but the file name numbers in the | |
21058 | statement program are 1-based. */ | |
6f77053d PA |
21059 | return m_line_header->file_name_at (m_file); |
21060 | } | |
21061 | ||
21062 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21063 | we're processing the end of a sequence. */ | |
21064 | void record_line (bool end_sequence); | |
21065 | ||
a8caed5d | 21066 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21067 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21068 | void check_line_address (struct dwarf2_cu *cu, |
21069 | const gdb_byte *line_ptr, | |
7ab6656f | 21070 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21071 | |
21072 | void handle_set_discriminator (unsigned int discriminator) | |
21073 | { | |
21074 | m_discriminator = discriminator; | |
21075 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21076 | } | |
21077 | ||
21078 | /* Handle DW_LNE_set_address. */ | |
21079 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21080 | { | |
21081 | m_op_index = 0; | |
21082 | address += baseaddr; | |
21083 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21084 | } | |
21085 | ||
21086 | /* Handle DW_LNS_advance_pc. */ | |
21087 | void handle_advance_pc (CORE_ADDR adjust); | |
21088 | ||
21089 | /* Handle a special opcode. */ | |
21090 | void handle_special_opcode (unsigned char op_code); | |
21091 | ||
21092 | /* Handle DW_LNS_advance_line. */ | |
21093 | void handle_advance_line (int line_delta) | |
21094 | { | |
21095 | advance_line (line_delta); | |
21096 | } | |
21097 | ||
21098 | /* Handle DW_LNS_set_file. */ | |
21099 | void handle_set_file (file_name_index file); | |
21100 | ||
21101 | /* Handle DW_LNS_negate_stmt. */ | |
21102 | void handle_negate_stmt () | |
21103 | { | |
21104 | m_is_stmt = !m_is_stmt; | |
21105 | } | |
21106 | ||
21107 | /* Handle DW_LNS_const_add_pc. */ | |
21108 | void handle_const_add_pc (); | |
21109 | ||
21110 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21111 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21112 | { | |
21113 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21114 | m_op_index = 0; | |
21115 | } | |
21116 | ||
21117 | /* Handle DW_LNS_copy. */ | |
21118 | void handle_copy () | |
21119 | { | |
21120 | record_line (false); | |
21121 | m_discriminator = 0; | |
21122 | } | |
21123 | ||
21124 | /* Handle DW_LNE_end_sequence. */ | |
21125 | void handle_end_sequence () | |
21126 | { | |
804d2729 | 21127 | m_currently_recording_lines = true; |
6f77053d PA |
21128 | } |
21129 | ||
21130 | private: | |
21131 | /* Advance the line by LINE_DELTA. */ | |
21132 | void advance_line (int line_delta) | |
21133 | { | |
21134 | m_line += line_delta; | |
21135 | ||
21136 | if (line_delta != 0) | |
21137 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21138 | } |
21139 | ||
804d2729 TT |
21140 | struct dwarf2_cu *m_cu; |
21141 | ||
6f77053d PA |
21142 | gdbarch *m_gdbarch; |
21143 | ||
21144 | /* True if we're recording lines. | |
21145 | Otherwise we're building partial symtabs and are just interested in | |
21146 | finding include files mentioned by the line number program. */ | |
21147 | bool m_record_lines_p; | |
21148 | ||
8c43009f | 21149 | /* The line number header. */ |
6f77053d | 21150 | line_header *m_line_header; |
8c43009f | 21151 | |
6f77053d PA |
21152 | /* These are part of the standard DWARF line number state machine, |
21153 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21154 | |
6f77053d | 21155 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21156 | /* The line table index of the current file. */ |
21157 | file_name_index m_file = 1; | |
6f77053d PA |
21158 | unsigned int m_line = 1; |
21159 | ||
21160 | /* These are initialized in the constructor. */ | |
21161 | ||
21162 | CORE_ADDR m_address; | |
21163 | bool m_is_stmt; | |
21164 | unsigned int m_discriminator; | |
d9b3de22 DE |
21165 | |
21166 | /* Additional bits of state we need to track. */ | |
21167 | ||
21168 | /* The last file that we called dwarf2_start_subfile for. | |
21169 | This is only used for TLLs. */ | |
6f77053d | 21170 | unsigned int m_last_file = 0; |
d9b3de22 | 21171 | /* The last file a line number was recorded for. */ |
6f77053d | 21172 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21173 | |
1313c56e AB |
21174 | /* The address of the last line entry. */ |
21175 | CORE_ADDR m_last_address; | |
21176 | ||
21177 | /* Set to true when a previous line at the same address (using | |
21178 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21179 | line entry at a new address (m_address different to m_last_address) is | |
21180 | processed. */ | |
21181 | bool m_stmt_at_address = false; | |
21182 | ||
804d2729 TT |
21183 | /* When true, record the lines we decode. */ |
21184 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21185 | |
21186 | /* The last line number that was recorded, used to coalesce | |
21187 | consecutive entries for the same line. This can happen, for | |
21188 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21189 | unsigned int m_last_line = 0; |
21190 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21191 | }; |
d9b3de22 | 21192 | |
6f77053d PA |
21193 | void |
21194 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21195 | { | |
21196 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21197 | / m_line_header->maximum_ops_per_instruction) | |
21198 | * m_line_header->minimum_instruction_length); | |
21199 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21200 | m_op_index = ((m_op_index + adjust) | |
21201 | % m_line_header->maximum_ops_per_instruction); | |
21202 | } | |
d9b3de22 | 21203 | |
6f77053d PA |
21204 | void |
21205 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21206 | { |
6f77053d | 21207 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21208 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21209 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21210 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21211 | / m_line_header->maximum_ops_per_instruction) |
21212 | * m_line_header->minimum_instruction_length); | |
21213 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21214 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21215 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21216 | |
258bf0ee | 21217 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21218 | advance_line (line_delta); |
21219 | record_line (false); | |
21220 | m_discriminator = 0; | |
21221 | } | |
d9b3de22 | 21222 | |
6f77053d PA |
21223 | void |
21224 | lnp_state_machine::handle_set_file (file_name_index file) | |
21225 | { | |
21226 | m_file = file; | |
21227 | ||
21228 | const file_entry *fe = current_file (); | |
21229 | if (fe == NULL) | |
21230 | dwarf2_debug_line_missing_file_complaint (); | |
21231 | else if (m_record_lines_p) | |
21232 | { | |
21233 | const char *dir = fe->include_dir (m_line_header); | |
21234 | ||
c24bdb02 | 21235 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21236 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21237 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21238 | } |
21239 | } | |
21240 | ||
21241 | void | |
21242 | lnp_state_machine::handle_const_add_pc () | |
21243 | { | |
21244 | CORE_ADDR adjust | |
21245 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21246 | ||
21247 | CORE_ADDR addr_adj | |
21248 | = (((m_op_index + adjust) | |
21249 | / m_line_header->maximum_ops_per_instruction) | |
21250 | * m_line_header->minimum_instruction_length); | |
21251 | ||
21252 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21253 | m_op_index = ((m_op_index + adjust) | |
21254 | % m_line_header->maximum_ops_per_instruction); | |
21255 | } | |
d9b3de22 | 21256 | |
a05a36a5 DE |
21257 | /* Return non-zero if we should add LINE to the line number table. |
21258 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21259 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21260 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21261 | had a non-zero discriminator. | |
21262 | ||
21263 | We have to be careful in the presence of discriminators. | |
21264 | E.g., for this line: | |
21265 | ||
21266 | for (i = 0; i < 100000; i++); | |
21267 | ||
21268 | clang can emit four line number entries for that one line, | |
21269 | each with a different discriminator. | |
21270 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21271 | ||
21272 | However, we want gdb to coalesce all four entries into one. | |
21273 | Otherwise the user could stepi into the middle of the line and | |
21274 | gdb would get confused about whether the pc really was in the | |
21275 | middle of the line. | |
21276 | ||
21277 | Things are further complicated by the fact that two consecutive | |
21278 | line number entries for the same line is a heuristic used by gcc | |
21279 | to denote the end of the prologue. So we can't just discard duplicate | |
21280 | entries, we have to be selective about it. The heuristic we use is | |
21281 | that we only collapse consecutive entries for the same line if at least | |
21282 | one of those entries has a non-zero discriminator. PR 17276. | |
21283 | ||
21284 | Note: Addresses in the line number state machine can never go backwards | |
21285 | within one sequence, thus this coalescing is ok. */ | |
21286 | ||
21287 | static int | |
804d2729 TT |
21288 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21289 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21290 | int line_has_non_zero_discriminator, |
21291 | struct subfile *last_subfile) | |
21292 | { | |
c24bdb02 | 21293 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21294 | return 1; |
21295 | if (line != last_line) | |
21296 | return 1; | |
21297 | /* Same line for the same file that we've seen already. | |
21298 | As a last check, for pr 17276, only record the line if the line | |
21299 | has never had a non-zero discriminator. */ | |
21300 | if (!line_has_non_zero_discriminator) | |
21301 | return 1; | |
21302 | return 0; | |
21303 | } | |
21304 | ||
804d2729 TT |
21305 | /* Use the CU's builder to record line number LINE beginning at |
21306 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21307 | |
21308 | static void | |
d9b3de22 | 21309 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21310 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21311 | struct dwarf2_cu *cu) |
252a6764 DE |
21312 | { |
21313 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21314 | ||
27e0867f DE |
21315 | if (dwarf_line_debug) |
21316 | { | |
21317 | fprintf_unfiltered (gdb_stdlog, | |
21318 | "Recording line %u, file %s, address %s\n", | |
21319 | line, lbasename (subfile->name), | |
21320 | paddress (gdbarch, address)); | |
21321 | } | |
21322 | ||
804d2729 | 21323 | if (cu != nullptr) |
8c95582d | 21324 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21325 | } |
21326 | ||
21327 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21328 | Mark the end of a set of line number records. | |
d9b3de22 | 21329 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21330 | If SUBFILE is NULL the request is ignored. */ |
21331 | ||
21332 | static void | |
21333 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21334 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21335 | { |
27e0867f DE |
21336 | if (subfile == NULL) |
21337 | return; | |
21338 | ||
21339 | if (dwarf_line_debug) | |
21340 | { | |
21341 | fprintf_unfiltered (gdb_stdlog, | |
21342 | "Finishing current line, file %s, address %s\n", | |
21343 | lbasename (subfile->name), | |
21344 | paddress (gdbarch, address)); | |
21345 | } | |
21346 | ||
8c95582d | 21347 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21348 | } |
21349 | ||
6f77053d PA |
21350 | void |
21351 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21352 | { |
d9b3de22 DE |
21353 | if (dwarf_line_debug) |
21354 | { | |
21355 | fprintf_unfiltered (gdb_stdlog, | |
21356 | "Processing actual line %u: file %u," | |
94a72be7 | 21357 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21358 | m_line, m_file, |
6f77053d | 21359 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21360 | m_is_stmt, m_discriminator, |
21361 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21362 | } |
21363 | ||
6f77053d | 21364 | file_entry *fe = current_file (); |
8c43009f PA |
21365 | |
21366 | if (fe == NULL) | |
d9b3de22 DE |
21367 | dwarf2_debug_line_missing_file_complaint (); |
21368 | /* For now we ignore lines not starting on an instruction boundary. | |
21369 | But not when processing end_sequence for compatibility with the | |
21370 | previous version of the code. */ | |
6f77053d | 21371 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21372 | { |
8c43009f | 21373 | fe->included_p = 1; |
8c95582d | 21374 | if (m_record_lines_p) |
d9b3de22 | 21375 | { |
1313c56e AB |
21376 | /* When we switch files we insert an end maker in the first file, |
21377 | switch to the second file and add a new line entry. The | |
21378 | problem is that the end marker inserted in the first file will | |
21379 | discard any previous line entries at the same address. If the | |
21380 | line entries in the first file are marked as is-stmt, while | |
21381 | the new line in the second file is non-stmt, then this means | |
21382 | the end marker will discard is-stmt lines so we can have a | |
21383 | non-stmt line. This means that there are less addresses at | |
21384 | which the user can insert a breakpoint. | |
21385 | ||
21386 | To improve this we track the last address in m_last_address, | |
21387 | and whether we have seen an is-stmt at this address. Then | |
21388 | when switching files, if we have seen a stmt at the current | |
21389 | address, and we are switching to create a non-stmt line, then | |
21390 | discard the new line. */ | |
21391 | bool file_changed | |
21392 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21393 | bool ignore_this_line | |
dda83cd7 SM |
21394 | = ((file_changed && !end_sequence && m_last_address == m_address |
21395 | && !m_is_stmt && m_stmt_at_address) | |
21396 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21397 | |
21398 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21399 | { |
804d2729 TT |
21400 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21401 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21402 | } |
21403 | ||
1313c56e | 21404 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21405 | { |
8c95582d AB |
21406 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21407 | ||
804d2729 | 21408 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21409 | m_line_has_non_zero_discriminator, |
21410 | m_last_subfile)) | |
d9b3de22 | 21411 | { |
c24bdb02 | 21412 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21413 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21414 | builder->get_current_subfile (), |
8c95582d | 21415 | m_line, m_address, is_stmt, |
804d2729 | 21416 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21417 | } |
c24bdb02 | 21418 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21419 | m_last_line = m_line; |
d9b3de22 DE |
21420 | } |
21421 | } | |
21422 | } | |
1313c56e AB |
21423 | |
21424 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21425 | have multiple line table entries all at m_address. */ | |
21426 | if (m_last_address != m_address) | |
21427 | { | |
21428 | m_stmt_at_address = false; | |
21429 | m_last_address = m_address; | |
21430 | } | |
21431 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21432 | } |
21433 | ||
804d2729 TT |
21434 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21435 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21436 | { |
804d2729 | 21437 | m_cu = cu; |
6f77053d PA |
21438 | m_gdbarch = arch; |
21439 | m_record_lines_p = record_lines_p; | |
21440 | m_line_header = lh; | |
d9b3de22 | 21441 | |
804d2729 | 21442 | m_currently_recording_lines = true; |
d9b3de22 | 21443 | |
d9b3de22 DE |
21444 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21445 | was a line entry for it so that the backend has a chance to adjust it | |
21446 | and also record it in case it needs it. This is currently used by MIPS | |
21447 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21448 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21449 | m_is_stmt = lh->default_is_stmt; | |
21450 | m_discriminator = 0; | |
1313c56e AB |
21451 | |
21452 | m_last_address = m_address; | |
21453 | m_stmt_at_address = false; | |
252a6764 DE |
21454 | } |
21455 | ||
6f77053d PA |
21456 | void |
21457 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21458 | const gdb_byte *line_ptr, | |
7ab6656f | 21459 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21460 | { |
a8caed5d FS |
21461 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21462 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21463 | located at 0x0. In this case, additionally check that if | |
21464 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21465 | |
a8caed5d FS |
21466 | if ((address == 0 && address < unrelocated_lowpc) |
21467 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21468 | { |
21469 | /* This line table is for a function which has been | |
21470 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21471 | ||
5e22e966 | 21472 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21473 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21474 | ||
b98664d3 | 21475 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21476 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21477 | m_currently_recording_lines = false; |
21478 | /* Note: m_currently_recording_lines is left as false until we see | |
21479 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21480 | } |
21481 | } | |
21482 | ||
f3f5162e | 21483 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21484 | Process the line number information in LH. |
21485 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21486 | program in order to set included_p for every referenced header. */ | |
debd256d | 21487 | |
c906108c | 21488 | static void |
43f3e411 DE |
21489 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21490 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21491 | { |
d521ce57 TT |
21492 | const gdb_byte *line_ptr, *extended_end; |
21493 | const gdb_byte *line_end; | |
a8c50c1f | 21494 | unsigned int bytes_read, extended_len; |
699ca60a | 21495 | unsigned char op_code, extended_op; |
e142c38c | 21496 | CORE_ADDR baseaddr; |
5e22e966 | 21497 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21498 | bfd *abfd = objfile->obfd; |
08feed99 | 21499 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21500 | /* True if we're recording line info (as opposed to building partial |
21501 | symtabs and just interested in finding include files mentioned by | |
21502 | the line number program). */ | |
21503 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21504 | |
b3b3bada | 21505 | baseaddr = objfile->text_section_offset (); |
c906108c | 21506 | |
debd256d JB |
21507 | line_ptr = lh->statement_program_start; |
21508 | line_end = lh->statement_program_end; | |
c906108c SS |
21509 | |
21510 | /* Read the statement sequences until there's nothing left. */ | |
21511 | while (line_ptr < line_end) | |
21512 | { | |
6f77053d PA |
21513 | /* The DWARF line number program state machine. Reset the state |
21514 | machine at the start of each sequence. */ | |
804d2729 | 21515 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21516 | bool end_sequence = false; |
d9b3de22 | 21517 | |
8c43009f | 21518 | if (record_lines_p) |
c906108c | 21519 | { |
8c43009f PA |
21520 | /* Start a subfile for the current file of the state |
21521 | machine. */ | |
21522 | const file_entry *fe = state_machine.current_file (); | |
21523 | ||
21524 | if (fe != NULL) | |
804d2729 | 21525 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21526 | } |
21527 | ||
a738430d | 21528 | /* Decode the table. */ |
d9b3de22 | 21529 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21530 | { |
21531 | op_code = read_1_byte (abfd, line_ptr); | |
21532 | line_ptr += 1; | |
9aa1fe7e | 21533 | |
debd256d | 21534 | if (op_code >= lh->opcode_base) |
6e70227d | 21535 | { |
8e07a239 | 21536 | /* Special opcode. */ |
6f77053d | 21537 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21538 | } |
21539 | else switch (op_code) | |
c906108c SS |
21540 | { |
21541 | case DW_LNS_extended_op: | |
3e43a32a MS |
21542 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21543 | &bytes_read); | |
473b7be6 | 21544 | line_ptr += bytes_read; |
a8c50c1f | 21545 | extended_end = line_ptr + extended_len; |
c906108c SS |
21546 | extended_op = read_1_byte (abfd, line_ptr); |
21547 | line_ptr += 1; | |
8f34b746 TV |
21548 | if (DW_LNE_lo_user <= extended_op |
21549 | && extended_op <= DW_LNE_hi_user) | |
21550 | { | |
21551 | /* Vendor extension, ignore. */ | |
21552 | line_ptr = extended_end; | |
21553 | break; | |
21554 | } | |
c906108c SS |
21555 | switch (extended_op) |
21556 | { | |
21557 | case DW_LNE_end_sequence: | |
6f77053d PA |
21558 | state_machine.handle_end_sequence (); |
21559 | end_sequence = true; | |
c906108c SS |
21560 | break; |
21561 | case DW_LNE_set_address: | |
d9b3de22 DE |
21562 | { |
21563 | CORE_ADDR address | |
c8a7a66f | 21564 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21565 | line_ptr += bytes_read; |
6f77053d PA |
21566 | |
21567 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21568 | lowpc - baseaddr, address); |
6f77053d | 21569 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21570 | } |
c906108c SS |
21571 | break; |
21572 | case DW_LNE_define_file: | |
dda83cd7 SM |
21573 | { |
21574 | const char *cur_file; | |
ecfb656c PA |
21575 | unsigned int mod_time, length; |
21576 | dir_index dindex; | |
6e70227d | 21577 | |
dda83cd7 | 21578 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21579 | &bytes_read); |
dda83cd7 SM |
21580 | line_ptr += bytes_read; |
21581 | dindex = (dir_index) | |
21582 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21583 | line_ptr += bytes_read; | |
21584 | mod_time = | |
21585 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21586 | line_ptr += bytes_read; | |
21587 | length = | |
21588 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21589 | line_ptr += bytes_read; | |
21590 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21591 | } | |
c906108c | 21592 | break; |
d0c6ba3d | 21593 | case DW_LNE_set_discriminator: |
6f77053d PA |
21594 | { |
21595 | /* The discriminator is not interesting to the | |
21596 | debugger; just ignore it. We still need to | |
21597 | check its value though: | |
21598 | if there are consecutive entries for the same | |
21599 | (non-prologue) line we want to coalesce them. | |
21600 | PR 17276. */ | |
21601 | unsigned int discr | |
21602 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21603 | line_ptr += bytes_read; | |
21604 | ||
21605 | state_machine.handle_set_discriminator (discr); | |
21606 | } | |
d0c6ba3d | 21607 | break; |
c906108c | 21608 | default: |
b98664d3 | 21609 | complaint (_("mangled .debug_line section")); |
debd256d | 21610 | return; |
c906108c | 21611 | } |
a8c50c1f DJ |
21612 | /* Make sure that we parsed the extended op correctly. If e.g. |
21613 | we expected a different address size than the producer used, | |
21614 | we may have read the wrong number of bytes. */ | |
21615 | if (line_ptr != extended_end) | |
21616 | { | |
b98664d3 | 21617 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21618 | return; |
21619 | } | |
c906108c SS |
21620 | break; |
21621 | case DW_LNS_copy: | |
6f77053d | 21622 | state_machine.handle_copy (); |
c906108c SS |
21623 | break; |
21624 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21625 | { |
21626 | CORE_ADDR adjust | |
21627 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21628 | line_ptr += bytes_read; |
6f77053d PA |
21629 | |
21630 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21631 | } |
c906108c SS |
21632 | break; |
21633 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21634 | { |
21635 | int line_delta | |
21636 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21637 | line_ptr += bytes_read; |
6f77053d PA |
21638 | |
21639 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21640 | } |
c906108c SS |
21641 | break; |
21642 | case DW_LNS_set_file: | |
d9b3de22 | 21643 | { |
6f77053d | 21644 | file_name_index file |
ecfb656c PA |
21645 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21646 | &bytes_read); | |
d9b3de22 | 21647 | line_ptr += bytes_read; |
8c43009f | 21648 | |
6f77053d | 21649 | state_machine.handle_set_file (file); |
d9b3de22 | 21650 | } |
c906108c SS |
21651 | break; |
21652 | case DW_LNS_set_column: | |
0ad93d4f | 21653 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21654 | line_ptr += bytes_read; |
21655 | break; | |
21656 | case DW_LNS_negate_stmt: | |
6f77053d | 21657 | state_machine.handle_negate_stmt (); |
c906108c SS |
21658 | break; |
21659 | case DW_LNS_set_basic_block: | |
c906108c | 21660 | break; |
c2c6d25f JM |
21661 | /* Add to the address register of the state machine the |
21662 | address increment value corresponding to special opcode | |
a738430d MK |
21663 | 255. I.e., this value is scaled by the minimum |
21664 | instruction length since special opcode 255 would have | |
b021a221 | 21665 | scaled the increment. */ |
c906108c | 21666 | case DW_LNS_const_add_pc: |
6f77053d | 21667 | state_machine.handle_const_add_pc (); |
c906108c SS |
21668 | break; |
21669 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21670 | { |
6f77053d | 21671 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21672 | line_ptr += 2; |
6f77053d PA |
21673 | |
21674 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21675 | } |
c906108c | 21676 | break; |
9aa1fe7e | 21677 | default: |
a738430d MK |
21678 | { |
21679 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21680 | int i; |
a738430d | 21681 | |
debd256d | 21682 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21683 | { |
21684 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21685 | line_ptr += bytes_read; | |
21686 | } | |
21687 | } | |
c906108c SS |
21688 | } |
21689 | } | |
d9b3de22 DE |
21690 | |
21691 | if (!end_sequence) | |
21692 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21693 | ||
21694 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21695 | in which case we still finish recording the last line). */ | |
6f77053d | 21696 | state_machine.record_line (true); |
c906108c | 21697 | } |
f3f5162e DE |
21698 | } |
21699 | ||
21700 | /* Decode the Line Number Program (LNP) for the given line_header | |
21701 | structure and CU. The actual information extracted and the type | |
21702 | of structures created from the LNP depends on the value of PST. | |
21703 | ||
21704 | 1. If PST is NULL, then this procedure uses the data from the program | |
21705 | to create all necessary symbol tables, and their linetables. | |
21706 | ||
21707 | 2. If PST is not NULL, this procedure reads the program to determine | |
21708 | the list of files included by the unit represented by PST, and | |
21709 | builds all the associated partial symbol tables. | |
21710 | ||
21711 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21712 | It is used for relative paths in the line table. | |
21713 | NOTE: When processing partial symtabs (pst != NULL), | |
21714 | comp_dir == pst->dirname. | |
21715 | ||
21716 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21717 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21718 | symtab we don't use it in the name of the psymtabs we create. | |
21719 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21720 | A good testcase for this is mb-inline.exp. |
21721 | ||
527f3840 JK |
21722 | LOWPC is the lowest address in CU (or 0 if not known). |
21723 | ||
21724 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21725 | for its PC<->lines mapping information. Otherwise only the filename | |
21726 | table is read in. */ | |
f3f5162e DE |
21727 | |
21728 | static void | |
21729 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21730 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21731 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21732 | { |
5e22e966 | 21733 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21734 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21735 | |
527f3840 JK |
21736 | if (decode_mapping) |
21737 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21738 | |
21739 | if (decode_for_pst_p) | |
21740 | { | |
aaa75496 | 21741 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21742 | create the psymtab of each included file. */ |
7ba99d21 | 21743 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21744 | if (file_entry.included_p == 1) |
21745 | { | |
c89b44cd | 21746 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21747 | const char *include_name = |
7ba99d21 AT |
21748 | psymtab_include_file_name (lh, file_entry, pst, |
21749 | comp_dir, &name_holder); | |
c6da4cef | 21750 | if (include_name != NULL) |
7b249e47 TT |
21751 | dwarf2_create_include_psymtab |
21752 | (cu->per_objfile->per_bfd, include_name, pst, | |
21753 | cu->per_objfile->per_bfd->partial_symtabs.get (), | |
0072c873 | 21754 | objfile->per_bfd); |
dda83cd7 | 21755 | } |
aaa75496 | 21756 | } |
cb1df416 DJ |
21757 | else |
21758 | { | |
21759 | /* Make sure a symtab is created for every file, even files | |
21760 | which contain only variables (i.e. no code with associated | |
21761 | line numbers). */ | |
c24bdb02 KS |
21762 | buildsym_compunit *builder = cu->get_builder (); |
21763 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21764 | |
7ba99d21 | 21765 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21766 | { |
804d2729 | 21767 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21768 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21769 | { |
c24bdb02 | 21770 | builder->get_current_subfile ()->symtab |
804d2729 | 21771 | = allocate_symtab (cust, |
c24bdb02 | 21772 | builder->get_current_subfile ()->name); |
43f3e411 | 21773 | } |
c24bdb02 | 21774 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21775 | } |
21776 | } | |
c906108c SS |
21777 | } |
21778 | ||
21779 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21780 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21781 | or NULL if not known. |
c906108c SS |
21782 | This routine tries to keep line numbers from identical absolute and |
21783 | relative file names in a common subfile. | |
21784 | ||
21785 | Using the `list' example from the GDB testsuite, which resides in | |
21786 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21787 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21788 | ||
c5aa993b | 21789 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21790 | DW_AT_comp_dir: /compdir |
357e46e7 | 21791 | files.files[0].name: list0.h |
c5aa993b | 21792 | files.files[0].dir: /srcdir |
357e46e7 | 21793 | files.files[1].name: list0.c |
c5aa993b | 21794 | files.files[1].dir: /srcdir |
c906108c SS |
21795 | |
21796 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21797 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21798 | start_subfile will ensure that this happens provided that we pass the | |
21799 | concatenation of files.files[1].dir and files.files[1].name as the | |
21800 | subfile's name. */ | |
c906108c SS |
21801 | |
21802 | static void | |
804d2729 TT |
21803 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21804 | const char *dirname) | |
c906108c | 21805 | { |
43816ebc | 21806 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21807 | |
4d663531 | 21808 | /* In order not to lose the line information directory, |
4f1520fb FR |
21809 | we concatenate it to the filename when it makes sense. |
21810 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21811 | information): ``The directory index is ignored for file names | |
21812 | that represent full path names''. Thus ignoring dirname in the | |
21813 | `else' branch below isn't an issue. */ | |
c906108c | 21814 | |
d5166ae1 | 21815 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21816 | { |
43816ebc TT |
21817 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21818 | filename = copy.get (); | |
d521ce57 | 21819 | } |
c906108c | 21820 | |
c24bdb02 | 21821 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21822 | } |
21823 | ||
804d2729 TT |
21824 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21825 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21826 | |
c24bdb02 KS |
21827 | struct compunit_symtab * |
21828 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21829 | CORE_ADDR low_pc) | |
f4dc4d17 | 21830 | { |
c24bdb02 | 21831 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21832 | |
c24bdb02 | 21833 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21834 | (this->per_objfile->objfile, |
c24bdb02 | 21835 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21836 | |
c24bdb02 | 21837 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21838 | |
c24bdb02 KS |
21839 | get_builder ()->record_debugformat ("DWARF 2"); |
21840 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21841 | |
c24bdb02 | 21842 | processing_has_namespace_info = false; |
43f3e411 | 21843 | |
c24bdb02 | 21844 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21845 | } |
21846 | ||
4c2df51b DJ |
21847 | static void |
21848 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21849 | struct dwarf2_cu *cu) |
4c2df51b | 21850 | { |
5e22e966 | 21851 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21852 | struct comp_unit_head *cu_header = &cu->header; |
21853 | ||
4c2df51b DJ |
21854 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21855 | code here to turn a symbol with DW_AT_external and a | |
21856 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21857 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21858 | with some versions of binutils) where shared libraries could have | |
21859 | relocations against symbols in their debug information - the | |
21860 | minimal symbol would have the right address, but the debug info | |
21861 | would not. It's no longer necessary, because we will explicitly | |
21862 | apply relocations when we read in the debug information now. */ | |
21863 | ||
21864 | /* A DW_AT_location attribute with no contents indicates that a | |
21865 | variable has been optimized away. */ | |
9d2246fc | 21866 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21867 | { |
f1e6e072 | 21868 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21869 | return; |
21870 | } | |
21871 | ||
21872 | /* Handle one degenerate form of location expression specially, to | |
21873 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21874 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21875 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21876 | |
9d2246fc TT |
21877 | if (attr->form_is_block ()) |
21878 | { | |
21879 | struct dwarf_block *block = attr->as_block (); | |
21880 | ||
21881 | if ((block->data[0] == DW_OP_addr | |
21882 | && block->size == 1 + cu_header->addr_size) | |
21883 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 21884 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
21885 | && (block->size |
21886 | == 1 + leb128_size (&block->data[1])))) | |
21887 | { | |
21888 | unsigned int dummy; | |
21889 | ||
21890 | if (block->data[0] == DW_OP_addr) | |
21891 | SET_SYMBOL_VALUE_ADDRESS | |
21892 | (sym, cu->header.read_address (objfile->obfd, | |
21893 | block->data + 1, | |
38583298 | 21894 | &dummy)); |
9d2246fc TT |
21895 | else |
21896 | SET_SYMBOL_VALUE_ADDRESS | |
21897 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21898 | &dummy)); | |
21899 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21900 | fixup_symbol_section (sym, objfile); | |
21901 | SET_SYMBOL_VALUE_ADDRESS | |
21902 | (sym, | |
21903 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 21904 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
21905 | return; |
21906 | } | |
4c2df51b DJ |
21907 | } |
21908 | ||
21909 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21910 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21911 | (i.e. when the value of a register or memory location is | |
21912 | referenced, or a thread-local block, etc.). Then again, it might | |
21913 | not be worthwhile. I'm assuming that it isn't unless performance | |
21914 | or memory numbers show me otherwise. */ | |
21915 | ||
f1e6e072 | 21916 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21917 | |
f1e6e072 | 21918 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21919 | cu->has_loclist = true; |
4c2df51b DJ |
21920 | } |
21921 | ||
c906108c SS |
21922 | /* Given a pointer to a DWARF information entry, figure out if we need |
21923 | to make a symbol table entry for it, and if so, create a new entry | |
21924 | and return a pointer to it. | |
21925 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21926 | used the passed type. |
21927 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21928 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21929 | |
21930 | static struct symbol * | |
5e2db402 TT |
21931 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21932 | struct symbol *space) | |
c906108c | 21933 | { |
976ca316 SM |
21934 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21935 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21936 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21937 | struct symbol *sym = NULL; |
15d034d0 | 21938 | const char *name; |
c906108c SS |
21939 | struct attribute *attr = NULL; |
21940 | struct attribute *attr2 = NULL; | |
e142c38c | 21941 | CORE_ADDR baseaddr; |
e37fd15a SW |
21942 | struct pending **list_to_add = NULL; |
21943 | ||
edb3359d | 21944 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21945 | |
b3b3bada | 21946 | baseaddr = objfile->text_section_offset (); |
c906108c | 21947 | |
94af9270 | 21948 | name = dwarf2_name (die, cu); |
c906108c SS |
21949 | if (name) |
21950 | { | |
34eaf542 | 21951 | int suppress_add = 0; |
94af9270 | 21952 | |
34eaf542 TT |
21953 | if (space) |
21954 | sym = space; | |
21955 | else | |
8c14c3a3 | 21956 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21957 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21958 | |
21959 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21960 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21961 | /* Fortran does not have mangling standard and the mangling does differ |
21962 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21963 | const char *physname |
21964 | = (cu->language == language_fortran | |
21965 | ? dwarf2_full_name (name, die, cu) | |
21966 | : dwarf2_physname (name, die, cu)); | |
21967 | const char *linkagename = dw2_linkage_name (die, cu); | |
21968 | ||
21969 | if (linkagename == nullptr || cu->language == language_ada) | |
21970 | sym->set_linkage_name (physname); | |
21971 | else | |
21972 | { | |
21973 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21974 | sym->set_linkage_name (linkagename); | |
21975 | } | |
f55ee35c | 21976 | |
c906108c | 21977 | /* Default assumptions. |
dda83cd7 | 21978 | Use the passed type or decode it from the die. */ |
176620f1 | 21979 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21980 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21981 | if (type != NULL) |
21982 | SYMBOL_TYPE (sym) = type; | |
21983 | else | |
e7c27a73 | 21984 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21985 | attr = dwarf2_attr (die, |
21986 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21987 | cu); | |
435d3d88 | 21988 | if (attr != nullptr) |
529908cb | 21989 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 21990 | |
edb3359d DJ |
21991 | attr = dwarf2_attr (die, |
21992 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21993 | cu); | |
aa659cfa | 21994 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 21995 | { |
529908cb | 21996 | file_name_index file_index |
aa659cfa | 21997 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 21998 | struct file_entry *fe; |
9a619af0 | 21999 | |
ecfb656c PA |
22000 | if (cu->line_header != NULL) |
22001 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22002 | else |
22003 | fe = NULL; | |
22004 | ||
22005 | if (fe == NULL) | |
b98664d3 | 22006 | complaint (_("file index out of range")); |
8c43009f PA |
22007 | else |
22008 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22009 | } |
22010 | ||
c906108c SS |
22011 | switch (die->tag) |
22012 | { | |
22013 | case DW_TAG_label: | |
e142c38c | 22014 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22015 | if (attr != nullptr) |
3e29f34a MR |
22016 | { |
22017 | CORE_ADDR addr; | |
22018 | ||
95f982e5 | 22019 | addr = attr->as_address (); |
3e29f34a | 22020 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22021 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22022 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22023 | } |
8f5c6526 TV |
22024 | else |
22025 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22026 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22027 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22028 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22029 | break; |
22030 | case DW_TAG_subprogram: | |
22031 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22032 | finish_block. */ | |
f1e6e072 | 22033 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22034 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22035 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22036 | || cu->language == language_ada |
22037 | || cu->language == language_fortran) | |
c906108c | 22038 | { |
dda83cd7 SM |
22039 | /* Subprograms marked external are stored as a global symbol. |
22040 | Ada and Fortran subprograms, whether marked external or | |
22041 | not, are always stored as a global symbol, because we want | |
22042 | to be able to access them globally. For instance, we want | |
22043 | to be able to break on a nested subprogram without having | |
22044 | to specify the context. */ | |
c24bdb02 | 22045 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22046 | } |
22047 | else | |
22048 | { | |
e37fd15a | 22049 | list_to_add = cu->list_in_scope; |
c906108c SS |
22050 | } |
22051 | break; | |
edb3359d DJ |
22052 | case DW_TAG_inlined_subroutine: |
22053 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22054 | finish_block. */ | |
f1e6e072 | 22055 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22056 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22057 | list_to_add = cu->list_in_scope; |
edb3359d | 22058 | break; |
34eaf542 TT |
22059 | case DW_TAG_template_value_param: |
22060 | suppress_add = 1; | |
22061 | /* Fall through. */ | |
72929c62 | 22062 | case DW_TAG_constant: |
c906108c | 22063 | case DW_TAG_variable: |
254e6b9e | 22064 | case DW_TAG_member: |
0963b4bd MS |
22065 | /* Compilation with minimal debug info may result in |
22066 | variables with missing type entries. Change the | |
22067 | misleading `void' type to something sensible. */ | |
78134374 | 22068 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22069 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22070 | |
e142c38c | 22071 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22072 | /* In the case of DW_TAG_member, we should only be called for |
22073 | static const members. */ | |
22074 | if (die->tag == DW_TAG_member) | |
22075 | { | |
3863f96c DE |
22076 | /* dwarf2_add_field uses die_is_declaration, |
22077 | so we do the same. */ | |
254e6b9e DE |
22078 | gdb_assert (die_is_declaration (die, cu)); |
22079 | gdb_assert (attr); | |
22080 | } | |
435d3d88 | 22081 | if (attr != nullptr) |
c906108c | 22082 | { |
e7c27a73 | 22083 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22084 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22085 | if (!suppress_add) |
34eaf542 | 22086 | { |
c45bc3f8 | 22087 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22088 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22089 | else |
e37fd15a | 22090 | list_to_add = cu->list_in_scope; |
34eaf542 | 22091 | } |
c906108c SS |
22092 | break; |
22093 | } | |
e142c38c | 22094 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22095 | if (attr != nullptr) |
c906108c | 22096 | { |
e7c27a73 | 22097 | var_decode_location (attr, sym, cu); |
e142c38c | 22098 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22099 | |
22100 | /* Fortran explicitly imports any global symbols to the local | |
22101 | scope by DW_TAG_common_block. */ | |
22102 | if (cu->language == language_fortran && die->parent | |
22103 | && die->parent->tag == DW_TAG_common_block) | |
22104 | attr2 = NULL; | |
22105 | ||
caac4577 JG |
22106 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22107 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22108 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22109 | { |
22110 | /* When a static variable is eliminated by the linker, | |
22111 | the corresponding debug information is not stripped | |
22112 | out, but the variable address is set to null; | |
22113 | do not add such variables into symbol table. */ | |
22114 | } | |
c45bc3f8 | 22115 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22116 | { |
4b610737 TT |
22117 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22118 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22119 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22120 | { |
22121 | /* A global static variable might be subject to | |
22122 | copy relocation. We first check for a local | |
22123 | minsym, though, because maybe the symbol was | |
22124 | marked hidden, in which case this would not | |
22125 | apply. */ | |
22126 | bound_minimal_symbol found | |
22127 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22128 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22129 | if (found.minsym != nullptr) |
22130 | sym->maybe_copied = 1; | |
22131 | } | |
f55ee35c | 22132 | |
1c809c68 TT |
22133 | /* A variable with DW_AT_external is never static, |
22134 | but it may be block-scoped. */ | |
804d2729 | 22135 | list_to_add |
c24bdb02 KS |
22136 | = ((cu->list_in_scope |
22137 | == cu->get_builder ()->get_file_symbols ()) | |
22138 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22139 | : cu->list_in_scope); |
1c809c68 | 22140 | } |
c906108c | 22141 | else |
e37fd15a | 22142 | list_to_add = cu->list_in_scope; |
c906108c SS |
22143 | } |
22144 | else | |
22145 | { | |
22146 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22147 | If it is an external symbol and we have type information |
22148 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22149 | The address of the variable will then be determined from | |
22150 | the minimal symbol table whenever the variable is | |
22151 | referenced. */ | |
e142c38c | 22152 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22153 | |
22154 | /* Fortran explicitly imports any global symbols to the local | |
22155 | scope by DW_TAG_common_block. */ | |
22156 | if (cu->language == language_fortran && die->parent | |
22157 | && die->parent->tag == DW_TAG_common_block) | |
22158 | { | |
22159 | /* SYMBOL_CLASS doesn't matter here because | |
22160 | read_common_block is going to reset it. */ | |
22161 | if (!suppress_add) | |
22162 | list_to_add = cu->list_in_scope; | |
22163 | } | |
c45bc3f8 | 22164 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22165 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22166 | { |
0fe7935b DJ |
22167 | /* A variable with DW_AT_external is never static, but it |
22168 | may be block-scoped. */ | |
804d2729 | 22169 | list_to_add |
c24bdb02 KS |
22170 | = ((cu->list_in_scope |
22171 | == cu->get_builder ()->get_file_symbols ()) | |
22172 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22173 | : cu->list_in_scope); |
0fe7935b | 22174 | |
f1e6e072 | 22175 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22176 | } |
442ddf59 JK |
22177 | else if (!die_is_declaration (die, cu)) |
22178 | { | |
22179 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22180 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22181 | if (!suppress_add) |
22182 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22183 | } |
c906108c SS |
22184 | } |
22185 | break; | |
22186 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22187 | { |
22188 | /* If we are inside a function, mark this as an argument. If | |
22189 | not, we might be looking at an argument to an inlined function | |
22190 | when we do not have enough information to show inlined frames; | |
22191 | pretend it's a local variable in that case so that the user can | |
22192 | still see it. */ | |
804d2729 | 22193 | struct context_stack *curr |
c24bdb02 | 22194 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22195 | if (curr != nullptr && curr->name != nullptr) |
22196 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22197 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22198 | if (attr != nullptr) |
a60f3166 TT |
22199 | { |
22200 | var_decode_location (attr, sym, cu); | |
22201 | } | |
22202 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22203 | if (attr != nullptr) |
a60f3166 TT |
22204 | { |
22205 | dwarf2_const_value (attr, sym, cu); | |
22206 | } | |
f346a30d | 22207 | |
a60f3166 TT |
22208 | list_to_add = cu->list_in_scope; |
22209 | } | |
c906108c SS |
22210 | break; |
22211 | case DW_TAG_unspecified_parameters: | |
22212 | /* From varargs functions; gdb doesn't seem to have any | |
22213 | interest in this information, so just ignore it for now. | |
22214 | (FIXME?) */ | |
22215 | break; | |
34eaf542 TT |
22216 | case DW_TAG_template_type_param: |
22217 | suppress_add = 1; | |
22218 | /* Fall through. */ | |
c906108c | 22219 | case DW_TAG_class_type: |
680b30c7 | 22220 | case DW_TAG_interface_type: |
c906108c SS |
22221 | case DW_TAG_structure_type: |
22222 | case DW_TAG_union_type: | |
72019c9c | 22223 | case DW_TAG_set_type: |
c906108c | 22224 | case DW_TAG_enumeration_type: |
f1e6e072 | 22225 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22226 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22227 | |
63d06c5c | 22228 | { |
9c37b5ae | 22229 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22230 | really ever be static objects: otherwise, if you try |
22231 | to, say, break of a class's method and you're in a file | |
22232 | which doesn't mention that class, it won't work unless | |
22233 | the check for all static symbols in lookup_symbol_aux | |
22234 | saves you. See the OtherFileClass tests in | |
22235 | gdb.c++/namespace.exp. */ | |
22236 | ||
e37fd15a | 22237 | if (!suppress_add) |
34eaf542 | 22238 | { |
c24bdb02 | 22239 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22240 | list_to_add |
c24bdb02 | 22241 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22242 | && cu->language == language_cplus |
c24bdb02 | 22243 | ? builder->get_global_symbols () |
804d2729 | 22244 | : cu->list_in_scope); |
63d06c5c | 22245 | |
64382290 | 22246 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22247 | ... }" also defines a typedef for "foo". */ |
64382290 | 22248 | if (cu->language == language_cplus |
45280282 | 22249 | || cu->language == language_ada |
c44af4eb TT |
22250 | || cu->language == language_d |
22251 | || cu->language == language_rust) | |
64382290 TT |
22252 | { |
22253 | /* The symbol's name is already allocated along | |
22254 | with this objfile, so we don't need to | |
22255 | duplicate it for the type. */ | |
7d93a1e0 | 22256 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22257 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22258 | } |
63d06c5c DC |
22259 | } |
22260 | } | |
c906108c SS |
22261 | break; |
22262 | case DW_TAG_typedef: | |
f1e6e072 | 22263 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22264 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22265 | list_to_add = cu->list_in_scope; |
63d06c5c | 22266 | break; |
d8f62e84 | 22267 | case DW_TAG_array_type: |
c906108c | 22268 | case DW_TAG_base_type: |
dda83cd7 | 22269 | case DW_TAG_subrange_type: |
f1e6e072 | 22270 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22271 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22272 | list_to_add = cu->list_in_scope; |
c906108c SS |
22273 | break; |
22274 | case DW_TAG_enumerator: | |
e142c38c | 22275 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22276 | if (attr != nullptr) |
c906108c | 22277 | { |
e7c27a73 | 22278 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22279 | } |
63d06c5c DC |
22280 | { |
22281 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22282 | DW_TAG_class_type, etc. block. */ | |
22283 | ||
804d2729 | 22284 | list_to_add |
c24bdb02 | 22285 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22286 | && cu->language == language_cplus |
c24bdb02 | 22287 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22288 | : cu->list_in_scope); |
63d06c5c | 22289 | } |
c906108c | 22290 | break; |
74921315 | 22291 | case DW_TAG_imported_declaration: |
5c4e30ca | 22292 | case DW_TAG_namespace: |
f1e6e072 | 22293 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22294 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22295 | break; |
530e8392 KB |
22296 | case DW_TAG_module: |
22297 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22298 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22299 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22300 | break; |
4357ac6c | 22301 | case DW_TAG_common_block: |
f1e6e072 | 22302 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22303 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22304 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22305 | break; |
c906108c SS |
22306 | default: |
22307 | /* Not a tag we recognize. Hopefully we aren't processing | |
22308 | trash data, but since we must specifically ignore things | |
22309 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22310 | this point. */ |
b98664d3 | 22311 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22312 | dwarf_tag_name (die->tag)); |
c906108c SS |
22313 | break; |
22314 | } | |
df8a16a1 | 22315 | |
e37fd15a SW |
22316 | if (suppress_add) |
22317 | { | |
22318 | sym->hash_next = objfile->template_symbols; | |
22319 | objfile->template_symbols = sym; | |
22320 | list_to_add = NULL; | |
22321 | } | |
22322 | ||
22323 | if (list_to_add != NULL) | |
d3cb6808 | 22324 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22325 | |
df8a16a1 DJ |
22326 | /* For the benefit of old versions of GCC, check for anonymous |
22327 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22328 | if (!cu->processing_has_namespace_info |
94af9270 | 22329 | && cu->language == language_cplus) |
c24bdb02 | 22330 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22331 | } |
22332 | return (sym); | |
22333 | } | |
22334 | ||
98bfdba5 PA |
22335 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22336 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22337 | standard (v4) is not entirely clear about the meaning of using | |
22338 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22339 | wider than the data. The conclusion of a discussion on the DWARF | |
22340 | list was that this is unspecified. We choose to always zero-extend | |
22341 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22342 | |
98bfdba5 | 22343 | static gdb_byte * |
ff39bb5e | 22344 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22345 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22346 | { |
5e22e966 | 22347 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22348 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22349 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22350 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22351 | |
22352 | if (bits < sizeof (*value) * 8) | |
22353 | { | |
22354 | l &= ((LONGEST) 1 << bits) - 1; | |
22355 | *value = l; | |
22356 | } | |
22357 | else if (bits == sizeof (*value) * 8) | |
22358 | *value = l; | |
22359 | else | |
22360 | { | |
224c3ddb | 22361 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22362 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22363 | return bytes; | |
22364 | } | |
22365 | ||
22366 | return NULL; | |
22367 | } | |
22368 | ||
22369 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22370 | the value does not fit in *VALUE, set *BYTES - either already | |
22371 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22372 | or, set *BATON, if we translated the constant to a location | |
22373 | expression. */ | |
22374 | ||
22375 | static void | |
ff39bb5e | 22376 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22377 | const char *name, struct obstack *obstack, |
22378 | struct dwarf2_cu *cu, | |
d521ce57 | 22379 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22380 | struct dwarf2_locexpr_baton **baton) |
22381 | { | |
5e22e966 | 22382 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22383 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22384 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22385 | struct dwarf_block *blk; |
98bfdba5 PA |
22386 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22387 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22388 | ||
22389 | *value = 0; | |
22390 | *bytes = NULL; | |
22391 | *baton = NULL; | |
c906108c SS |
22392 | |
22393 | switch (attr->form) | |
22394 | { | |
22395 | case DW_FORM_addr: | |
336d760d | 22396 | case DW_FORM_addrx: |
3019eac3 | 22397 | case DW_FORM_GNU_addr_index: |
ac56253d | 22398 | { |
ac56253d TT |
22399 | gdb_byte *data; |
22400 | ||
98bfdba5 PA |
22401 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22402 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22403 | cu_header->addr_size, |
98bfdba5 | 22404 | TYPE_LENGTH (type)); |
ac56253d TT |
22405 | /* Symbols of this form are reasonably rare, so we just |
22406 | piggyback on the existing location code rather than writing | |
22407 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22408 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22409 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22410 | (*baton)->per_cu = cu->per_cu; |
22411 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22412 | |
98bfdba5 | 22413 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22414 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22415 | (*baton)->data = data; |
ac56253d TT |
22416 | |
22417 | data[0] = DW_OP_addr; | |
22418 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22419 | byte_order, attr->as_address ()); |
ac56253d | 22420 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22421 | } |
c906108c | 22422 | break; |
4ac36638 | 22423 | case DW_FORM_string: |
93b5768b | 22424 | case DW_FORM_strp: |
cf532bd1 | 22425 | case DW_FORM_strx: |
3019eac3 | 22426 | case DW_FORM_GNU_str_index: |
36586728 | 22427 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22428 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22429 | directly to it. */ |
2c830f54 | 22430 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22431 | break; |
c906108c SS |
22432 | case DW_FORM_block1: |
22433 | case DW_FORM_block2: | |
22434 | case DW_FORM_block4: | |
22435 | case DW_FORM_block: | |
2dc7f7b3 | 22436 | case DW_FORM_exprloc: |
0224619f | 22437 | case DW_FORM_data16: |
9d2246fc | 22438 | blk = attr->as_block (); |
98bfdba5 PA |
22439 | if (TYPE_LENGTH (type) != blk->size) |
22440 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22441 | TYPE_LENGTH (type)); | |
22442 | *bytes = blk->data; | |
c906108c | 22443 | break; |
2df3850c JM |
22444 | |
22445 | /* The DW_AT_const_value attributes are supposed to carry the | |
22446 | symbol's value "represented as it would be on the target | |
22447 | architecture." By the time we get here, it's already been | |
22448 | converted to host endianness, so we just need to sign- or | |
22449 | zero-extend it as appropriate. */ | |
22450 | case DW_FORM_data1: | |
3aef2284 | 22451 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22452 | break; |
c906108c | 22453 | case DW_FORM_data2: |
3aef2284 | 22454 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22455 | break; |
c906108c | 22456 | case DW_FORM_data4: |
3aef2284 | 22457 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22458 | break; |
c906108c | 22459 | case DW_FORM_data8: |
3aef2284 | 22460 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22461 | break; |
22462 | ||
c906108c | 22463 | case DW_FORM_sdata: |
663c44ac | 22464 | case DW_FORM_implicit_const: |
1bc397c5 | 22465 | *value = attr->as_signed (); |
2df3850c JM |
22466 | break; |
22467 | ||
c906108c | 22468 | case DW_FORM_udata: |
529908cb | 22469 | *value = attr->as_unsigned (); |
c906108c | 22470 | break; |
2df3850c | 22471 | |
c906108c | 22472 | default: |
b98664d3 | 22473 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22474 | dwarf_form_name (attr->form)); |
98bfdba5 | 22475 | *value = 0; |
c906108c SS |
22476 | break; |
22477 | } | |
22478 | } | |
22479 | ||
2df3850c | 22480 | |
98bfdba5 PA |
22481 | /* Copy constant value from an attribute to a symbol. */ |
22482 | ||
2df3850c | 22483 | static void |
ff39bb5e | 22484 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22485 | struct dwarf2_cu *cu) |
2df3850c | 22486 | { |
5e22e966 | 22487 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22488 | LONGEST value; |
d521ce57 | 22489 | const gdb_byte *bytes; |
98bfdba5 | 22490 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22491 | |
98bfdba5 | 22492 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22493 | sym->print_name (), |
98bfdba5 PA |
22494 | &objfile->objfile_obstack, cu, |
22495 | &value, &bytes, &baton); | |
2df3850c | 22496 | |
98bfdba5 PA |
22497 | if (baton != NULL) |
22498 | { | |
98bfdba5 | 22499 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22500 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22501 | } |
22502 | else if (bytes != NULL) | |
22503 | { | |
22504 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22505 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22506 | } |
22507 | else | |
22508 | { | |
22509 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22510 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22511 | } |
2df3850c JM |
22512 | } |
22513 | ||
c906108c SS |
22514 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22515 | ||
22516 | static struct type * | |
e7c27a73 | 22517 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22518 | { |
c906108c | 22519 | struct attribute *type_attr; |
c906108c | 22520 | |
e142c38c | 22521 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22522 | if (!type_attr) |
22523 | { | |
5e22e966 | 22524 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22525 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22526 | return objfile_type (objfile)->builtin_void; |
c906108c | 22527 | } |
348e048f | 22528 | |
673bfd45 | 22529 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22530 | } |
22531 | ||
b4ba55a1 JB |
22532 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22533 | that allows to find parallel types through that information instead | |
22534 | of having to do expensive parallel lookups by type name. */ | |
22535 | ||
22536 | static int | |
22537 | need_gnat_info (struct dwarf2_cu *cu) | |
22538 | { | |
de4cb04a JB |
22539 | /* Assume that the Ada compiler was GNAT, which always produces |
22540 | the auxiliary information. */ | |
22541 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22542 | } |
22543 | ||
b4ba55a1 JB |
22544 | /* Return the auxiliary type of the die in question using its |
22545 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22546 | attribute is not present. */ | |
22547 | ||
22548 | static struct type * | |
22549 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22550 | { | |
b4ba55a1 | 22551 | struct attribute *type_attr; |
b4ba55a1 JB |
22552 | |
22553 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22554 | if (!type_attr) | |
22555 | return NULL; | |
22556 | ||
673bfd45 | 22557 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22558 | } |
22559 | ||
22560 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22561 | descriptive type accordingly. */ | |
22562 | ||
22563 | static void | |
22564 | set_descriptive_type (struct type *type, struct die_info *die, | |
22565 | struct dwarf2_cu *cu) | |
22566 | { | |
22567 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22568 | ||
22569 | if (descriptive_type) | |
22570 | { | |
22571 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22572 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22573 | } | |
22574 | } | |
22575 | ||
c906108c SS |
22576 | /* Return the containing type of the die in question using its |
22577 | DW_AT_containing_type attribute. */ | |
22578 | ||
22579 | static struct type * | |
e7c27a73 | 22580 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22581 | { |
c906108c | 22582 | struct attribute *type_attr; |
5e22e966 | 22583 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22584 | |
e142c38c | 22585 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22586 | if (!type_attr) |
22587 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22588 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22589 | |
673bfd45 | 22590 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22591 | } |
22592 | ||
ac9ec31b DE |
22593 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22594 | ||
22595 | static struct type * | |
22596 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22597 | { | |
976ca316 SM |
22598 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22599 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22600 | char *saved; |
ac9ec31b | 22601 | |
528e1572 SM |
22602 | std::string message |
22603 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22604 | objfile_name (objfile), | |
22605 | sect_offset_str (cu->header.sect_off), | |
22606 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22607 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22608 | |
19f392bc | 22609 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22610 | } |
22611 | ||
673bfd45 | 22612 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22613 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22614 | DW_AT_containing_type. | |
673bfd45 DE |
22615 | If there is no type substitute an error marker. */ |
22616 | ||
c906108c | 22617 | static struct type * |
ff39bb5e | 22618 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22619 | struct dwarf2_cu *cu) |
c906108c | 22620 | { |
976ca316 SM |
22621 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22622 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22623 | struct type *this_type; |
22624 | ||
ac9ec31b DE |
22625 | gdb_assert (attr->name == DW_AT_type |
22626 | || attr->name == DW_AT_GNAT_descriptive_type | |
22627 | || attr->name == DW_AT_containing_type); | |
22628 | ||
673bfd45 DE |
22629 | /* First see if we have it cached. */ |
22630 | ||
36586728 TT |
22631 | if (attr->form == DW_FORM_GNU_ref_alt) |
22632 | { | |
22633 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22634 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22635 | |
976ca316 SM |
22636 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22637 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22638 | } |
cd6c91b4 | 22639 | else if (attr->form_is_ref ()) |
673bfd45 | 22640 | { |
0826b30a | 22641 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22642 | |
976ca316 | 22643 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22644 | } |
55f1336d | 22645 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22646 | { |
630ed6b9 | 22647 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22648 | |
ac9ec31b | 22649 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22650 | } |
22651 | else | |
22652 | { | |
b98664d3 | 22653 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22654 | " at %s [in module %s]"), |
22655 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22656 | objfile_name (objfile)); |
ac9ec31b | 22657 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22658 | } |
22659 | ||
22660 | /* If not cached we need to read it in. */ | |
22661 | ||
22662 | if (this_type == NULL) | |
22663 | { | |
ac9ec31b | 22664 | struct die_info *type_die = NULL; |
673bfd45 DE |
22665 | struct dwarf2_cu *type_cu = cu; |
22666 | ||
cd6c91b4 | 22667 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22668 | type_die = follow_die_ref (die, attr, &type_cu); |
22669 | if (type_die == NULL) | |
22670 | return build_error_marker_type (cu, die); | |
22671 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22672 | from an inter-CU reference and the type's CU got expanded before |
22673 | ours. */ | |
ac9ec31b | 22674 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22675 | } |
22676 | ||
22677 | /* If we still don't have a type use an error marker. */ | |
22678 | ||
22679 | if (this_type == NULL) | |
ac9ec31b | 22680 | return build_error_marker_type (cu, die); |
673bfd45 | 22681 | |
f792889a | 22682 | return this_type; |
c906108c SS |
22683 | } |
22684 | ||
673bfd45 DE |
22685 | /* Return the type in DIE, CU. |
22686 | Returns NULL for invalid types. | |
22687 | ||
02142a6c | 22688 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22689 | and only reads the die in if necessary. |
22690 | ||
22691 | NOTE: This can be called when reading in partial or full symbols. */ | |
22692 | ||
f792889a | 22693 | static struct type * |
e7c27a73 | 22694 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22695 | { |
f792889a DJ |
22696 | struct type *this_type; |
22697 | ||
22698 | this_type = get_die_type (die, cu); | |
22699 | if (this_type) | |
22700 | return this_type; | |
22701 | ||
673bfd45 DE |
22702 | return read_type_die_1 (die, cu); |
22703 | } | |
22704 | ||
22705 | /* Read the type in DIE, CU. | |
22706 | Returns NULL for invalid types. */ | |
22707 | ||
22708 | static struct type * | |
22709 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22710 | { | |
22711 | struct type *this_type = NULL; | |
22712 | ||
c906108c SS |
22713 | switch (die->tag) |
22714 | { | |
22715 | case DW_TAG_class_type: | |
680b30c7 | 22716 | case DW_TAG_interface_type: |
c906108c SS |
22717 | case DW_TAG_structure_type: |
22718 | case DW_TAG_union_type: | |
f792889a | 22719 | this_type = read_structure_type (die, cu); |
c906108c SS |
22720 | break; |
22721 | case DW_TAG_enumeration_type: | |
f792889a | 22722 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22723 | break; |
22724 | case DW_TAG_subprogram: | |
22725 | case DW_TAG_subroutine_type: | |
edb3359d | 22726 | case DW_TAG_inlined_subroutine: |
f792889a | 22727 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22728 | break; |
22729 | case DW_TAG_array_type: | |
f792889a | 22730 | this_type = read_array_type (die, cu); |
c906108c | 22731 | break; |
72019c9c | 22732 | case DW_TAG_set_type: |
f792889a | 22733 | this_type = read_set_type (die, cu); |
72019c9c | 22734 | break; |
c906108c | 22735 | case DW_TAG_pointer_type: |
f792889a | 22736 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22737 | break; |
22738 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22739 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22740 | break; |
22741 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22742 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22743 | break; | |
22744 | case DW_TAG_rvalue_reference_type: | |
22745 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22746 | break; |
22747 | case DW_TAG_const_type: | |
f792889a | 22748 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22749 | break; |
22750 | case DW_TAG_volatile_type: | |
f792889a | 22751 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22752 | break; |
06d66ee9 TT |
22753 | case DW_TAG_restrict_type: |
22754 | this_type = read_tag_restrict_type (die, cu); | |
22755 | break; | |
c906108c | 22756 | case DW_TAG_string_type: |
f792889a | 22757 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22758 | break; |
22759 | case DW_TAG_typedef: | |
f792889a | 22760 | this_type = read_typedef (die, cu); |
c906108c | 22761 | break; |
a02abb62 | 22762 | case DW_TAG_subrange_type: |
f792889a | 22763 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22764 | break; |
c906108c | 22765 | case DW_TAG_base_type: |
f792889a | 22766 | this_type = read_base_type (die, cu); |
c906108c | 22767 | break; |
81a17f79 | 22768 | case DW_TAG_unspecified_type: |
f792889a | 22769 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22770 | break; |
0114d602 DJ |
22771 | case DW_TAG_namespace: |
22772 | this_type = read_namespace_type (die, cu); | |
22773 | break; | |
f55ee35c JK |
22774 | case DW_TAG_module: |
22775 | this_type = read_module_type (die, cu); | |
22776 | break; | |
a2c2acaf MW |
22777 | case DW_TAG_atomic_type: |
22778 | this_type = read_tag_atomic_type (die, cu); | |
22779 | break; | |
c906108c | 22780 | default: |
b98664d3 | 22781 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22782 | dwarf_tag_name (die->tag)); |
c906108c SS |
22783 | break; |
22784 | } | |
63d06c5c | 22785 | |
f792889a | 22786 | return this_type; |
63d06c5c DC |
22787 | } |
22788 | ||
abc72ce4 DE |
22789 | /* See if we can figure out if the class lives in a namespace. We do |
22790 | this by looking for a member function; its demangled name will | |
22791 | contain namespace info, if there is any. | |
22792 | Return the computed name or NULL. | |
22793 | Space for the result is allocated on the objfile's obstack. | |
22794 | This is the full-die version of guess_partial_die_structure_name. | |
22795 | In this case we know DIE has no useful parent. */ | |
22796 | ||
43816ebc | 22797 | static const char * |
abc72ce4 DE |
22798 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22799 | { | |
22800 | struct die_info *spec_die; | |
22801 | struct dwarf2_cu *spec_cu; | |
22802 | struct die_info *child; | |
5e22e966 | 22803 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22804 | |
22805 | spec_cu = cu; | |
22806 | spec_die = die_specification (die, &spec_cu); | |
22807 | if (spec_die != NULL) | |
22808 | { | |
22809 | die = spec_die; | |
22810 | cu = spec_cu; | |
22811 | } | |
22812 | ||
22813 | for (child = die->child; | |
22814 | child != NULL; | |
22815 | child = child->sibling) | |
22816 | { | |
22817 | if (child->tag == DW_TAG_subprogram) | |
22818 | { | |
73b9be8b | 22819 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22820 | |
7d45c7c3 | 22821 | if (linkage_name != NULL) |
abc72ce4 | 22822 | { |
43816ebc | 22823 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22824 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22825 | const char *name = NULL; |
abc72ce4 DE |
22826 | |
22827 | if (actual_name != NULL) | |
22828 | { | |
15d034d0 | 22829 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22830 | |
22831 | if (die_name != NULL | |
43816ebc | 22832 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22833 | { |
22834 | /* Strip off the class name from the full name. | |
22835 | We want the prefix. */ | |
22836 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22837 | int actual_name_len = strlen (actual_name.get ()); |
22838 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22839 | |
22840 | /* Test for '::' as a sanity check. */ | |
22841 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22842 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22843 | name = obstack_strndup ( |
e3b94546 | 22844 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22845 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22846 | } |
22847 | } | |
abc72ce4 DE |
22848 | return name; |
22849 | } | |
22850 | } | |
22851 | } | |
22852 | ||
22853 | return NULL; | |
22854 | } | |
22855 | ||
96408a79 SA |
22856 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22857 | prefix part in such case. See | |
22858 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22859 | ||
a121b7c1 | 22860 | static const char * |
96408a79 SA |
22861 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22862 | { | |
22863 | struct attribute *attr; | |
e6a959d6 | 22864 | const char *base; |
96408a79 SA |
22865 | |
22866 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22867 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22868 | return NULL; | |
22869 | ||
7d45c7c3 | 22870 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22871 | return NULL; |
22872 | ||
73b9be8b | 22873 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22874 | const char *attr_name = attr->as_string (); |
22875 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22876 | return NULL; |
22877 | ||
22878 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22879 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22880 | |
22881 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22882 | base = strrchr (attr_name, ':'); |
22883 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22884 | return ""; |
22885 | ||
5e22e966 | 22886 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22887 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22888 | attr_name, |
22889 | &base[-1] - attr_name); | |
96408a79 SA |
22890 | } |
22891 | ||
fdde2d81 | 22892 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22893 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22894 | |
0114d602 DJ |
22895 | For example, if we're within the method foo() in the following |
22896 | code: | |
22897 | ||
22898 | namespace N { | |
22899 | class C { | |
22900 | void foo () { | |
22901 | } | |
22902 | }; | |
22903 | } | |
22904 | ||
22905 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22906 | |
0d5cff50 | 22907 | static const char * |
e142c38c | 22908 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22909 | { |
976ca316 | 22910 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22911 | struct die_info *parent, *spec_die; |
22912 | struct dwarf2_cu *spec_cu; | |
22913 | struct type *parent_type; | |
a121b7c1 | 22914 | const char *retval; |
63d06c5c | 22915 | |
9c37b5ae | 22916 | if (cu->language != language_cplus |
c44af4eb TT |
22917 | && cu->language != language_fortran && cu->language != language_d |
22918 | && cu->language != language_rust) | |
0114d602 DJ |
22919 | return ""; |
22920 | ||
96408a79 SA |
22921 | retval = anonymous_struct_prefix (die, cu); |
22922 | if (retval) | |
22923 | return retval; | |
22924 | ||
0114d602 DJ |
22925 | /* We have to be careful in the presence of DW_AT_specification. |
22926 | For example, with GCC 3.4, given the code | |
22927 | ||
22928 | namespace N { | |
22929 | void foo() { | |
22930 | // Definition of N::foo. | |
22931 | } | |
22932 | } | |
22933 | ||
22934 | then we'll have a tree of DIEs like this: | |
22935 | ||
22936 | 1: DW_TAG_compile_unit | |
22937 | 2: DW_TAG_namespace // N | |
22938 | 3: DW_TAG_subprogram // declaration of N::foo | |
22939 | 4: DW_TAG_subprogram // definition of N::foo | |
22940 | DW_AT_specification // refers to die #3 | |
22941 | ||
22942 | Thus, when processing die #4, we have to pretend that we're in | |
22943 | the context of its DW_AT_specification, namely the contex of die | |
22944 | #3. */ | |
22945 | spec_cu = cu; | |
22946 | spec_die = die_specification (die, &spec_cu); | |
22947 | if (spec_die == NULL) | |
22948 | parent = die->parent; | |
22949 | else | |
63d06c5c | 22950 | { |
0114d602 DJ |
22951 | parent = spec_die->parent; |
22952 | cu = spec_cu; | |
63d06c5c | 22953 | } |
0114d602 DJ |
22954 | |
22955 | if (parent == NULL) | |
22956 | return ""; | |
98bfdba5 PA |
22957 | else if (parent->building_fullname) |
22958 | { | |
22959 | const char *name; | |
22960 | const char *parent_name; | |
22961 | ||
22962 | /* It has been seen on RealView 2.2 built binaries, | |
22963 | DW_TAG_template_type_param types actually _defined_ as | |
22964 | children of the parent class: | |
22965 | ||
22966 | enum E {}; | |
22967 | template class <class Enum> Class{}; | |
22968 | Class<enum E> class_e; | |
22969 | ||
dda83cd7 SM |
22970 | 1: DW_TAG_class_type (Class) |
22971 | 2: DW_TAG_enumeration_type (E) | |
22972 | 3: DW_TAG_enumerator (enum1:0) | |
22973 | 3: DW_TAG_enumerator (enum2:1) | |
22974 | ... | |
22975 | 2: DW_TAG_template_type_param | |
22976 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
22977 | |
22978 | Besides being broken debug info, it can put GDB into an | |
22979 | infinite loop. Consider: | |
22980 | ||
22981 | When we're building the full name for Class<E>, we'll start | |
22982 | at Class, and go look over its template type parameters, | |
22983 | finding E. We'll then try to build the full name of E, and | |
22984 | reach here. We're now trying to build the full name of E, | |
22985 | and look over the parent DIE for containing scope. In the | |
22986 | broken case, if we followed the parent DIE of E, we'd again | |
22987 | find Class, and once again go look at its template type | |
22988 | arguments, etc., etc. Simply don't consider such parent die | |
22989 | as source-level parent of this die (it can't be, the language | |
22990 | doesn't allow it), and break the loop here. */ | |
22991 | name = dwarf2_name (die, cu); | |
22992 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22993 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22994 | name ? name : "<unknown>", |
22995 | parent_name ? parent_name : "<unknown>"); | |
22996 | return ""; | |
22997 | } | |
63d06c5c | 22998 | else |
0114d602 DJ |
22999 | switch (parent->tag) |
23000 | { | |
63d06c5c | 23001 | case DW_TAG_namespace: |
0114d602 | 23002 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23003 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23004 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23005 | Work around this problem here. */ | |
23006 | if (cu->language == language_cplus | |
7d93a1e0 | 23007 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23008 | return ""; |
0114d602 | 23009 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23010 | return parent_type->name (); |
63d06c5c | 23011 | case DW_TAG_class_type: |
680b30c7 | 23012 | case DW_TAG_interface_type: |
63d06c5c | 23013 | case DW_TAG_structure_type: |
0114d602 | 23014 | case DW_TAG_union_type: |
f55ee35c | 23015 | case DW_TAG_module: |
0114d602 | 23016 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23017 | if (parent_type->name () != NULL) |
23018 | return parent_type->name (); | |
0114d602 DJ |
23019 | else |
23020 | /* An anonymous structure is only allowed non-static data | |
23021 | members; no typedefs, no member functions, et cetera. | |
23022 | So it does not need a prefix. */ | |
23023 | return ""; | |
abc72ce4 | 23024 | case DW_TAG_compile_unit: |
95554aad | 23025 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23026 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23027 | if (cu->language == language_cplus | |
976ca316 | 23028 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23029 | && die->child != NULL |
23030 | && (die->tag == DW_TAG_class_type | |
23031 | || die->tag == DW_TAG_structure_type | |
23032 | || die->tag == DW_TAG_union_type)) | |
23033 | { | |
43816ebc | 23034 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23035 | if (name != NULL) |
23036 | return name; | |
23037 | } | |
23038 | return ""; | |
0a4b0913 AB |
23039 | case DW_TAG_subprogram: |
23040 | /* Nested subroutines in Fortran get a prefix with the name | |
23041 | of the parent's subroutine. */ | |
23042 | if (cu->language == language_fortran) | |
23043 | { | |
23044 | if ((die->tag == DW_TAG_subprogram) | |
23045 | && (dwarf2_name (parent, cu) != NULL)) | |
23046 | return dwarf2_name (parent, cu); | |
23047 | } | |
23048 | return determine_prefix (parent, cu); | |
3d567982 TT |
23049 | case DW_TAG_enumeration_type: |
23050 | parent_type = read_type_die (parent, cu); | |
3bc440a2 | 23051 | if (parent_type->is_declared_class ()) |
3d567982 | 23052 | { |
7d93a1e0 SM |
23053 | if (parent_type->name () != NULL) |
23054 | return parent_type->name (); | |
3d567982 TT |
23055 | return ""; |
23056 | } | |
23057 | /* Fall through. */ | |
63d06c5c | 23058 | default: |
8176b9b8 | 23059 | return determine_prefix (parent, cu); |
63d06c5c | 23060 | } |
63d06c5c DC |
23061 | } |
23062 | ||
3e43a32a MS |
23063 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23064 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23065 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23066 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23067 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23068 | |
f55ee35c | 23069 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23070 | |
23071 | static char * | |
f55ee35c | 23072 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23073 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23074 | { |
f55ee35c | 23075 | const char *lead = ""; |
5c315b68 | 23076 | const char *sep; |
63d06c5c | 23077 | |
3e43a32a MS |
23078 | if (suffix == NULL || suffix[0] == '\0' |
23079 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23080 | sep = ""; |
45280282 IB |
23081 | else if (cu->language == language_d) |
23082 | { | |
23083 | /* For D, the 'main' function could be defined in any module, but it | |
23084 | should never be prefixed. */ | |
23085 | if (strcmp (suffix, "D main") == 0) | |
23086 | { | |
23087 | prefix = ""; | |
23088 | sep = ""; | |
23089 | } | |
23090 | else | |
23091 | sep = "."; | |
23092 | } | |
f55ee35c JK |
23093 | else if (cu->language == language_fortran && physname) |
23094 | { | |
23095 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23096 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23097 | ||
23098 | lead = "__"; | |
23099 | sep = "_MOD_"; | |
23100 | } | |
987504bb JJ |
23101 | else |
23102 | sep = "::"; | |
63d06c5c | 23103 | |
6dd47d34 DE |
23104 | if (prefix == NULL) |
23105 | prefix = ""; | |
23106 | if (suffix == NULL) | |
23107 | suffix = ""; | |
23108 | ||
987504bb JJ |
23109 | if (obs == NULL) |
23110 | { | |
3e43a32a | 23111 | char *retval |
224c3ddb SM |
23112 | = ((char *) |
23113 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23114 | |
f55ee35c JK |
23115 | strcpy (retval, lead); |
23116 | strcat (retval, prefix); | |
6dd47d34 DE |
23117 | strcat (retval, sep); |
23118 | strcat (retval, suffix); | |
63d06c5c DC |
23119 | return retval; |
23120 | } | |
987504bb JJ |
23121 | else |
23122 | { | |
23123 | /* We have an obstack. */ | |
f55ee35c | 23124 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23125 | } |
63d06c5c DC |
23126 | } |
23127 | ||
71c25dea TT |
23128 | /* Get name of a die, return NULL if not found. */ |
23129 | ||
15d034d0 TT |
23130 | static const char * |
23131 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23132 | struct objfile *objfile) |
71c25dea TT |
23133 | { |
23134 | if (name && cu->language == language_cplus) | |
23135 | { | |
596dc4ad TT |
23136 | gdb::unique_xmalloc_ptr<char> canon_name |
23137 | = cp_canonicalize_string (name); | |
71c25dea | 23138 | |
596dc4ad TT |
23139 | if (canon_name != nullptr) |
23140 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23141 | } |
23142 | ||
23143 | return name; | |
c906108c SS |
23144 | } |
23145 | ||
96553a0c DE |
23146 | /* Get name of a die, return NULL if not found. |
23147 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23148 | |
15d034d0 | 23149 | static const char * |
e142c38c | 23150 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23151 | { |
23152 | struct attribute *attr; | |
5e22e966 | 23153 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23154 | |
e142c38c | 23155 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23156 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23157 | if (attr_name == nullptr | |
96553a0c | 23158 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23159 | && die->tag != DW_TAG_class_type |
23160 | && die->tag != DW_TAG_interface_type | |
23161 | && die->tag != DW_TAG_structure_type | |
23162 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23163 | return NULL; |
23164 | ||
23165 | switch (die->tag) | |
23166 | { | |
23167 | case DW_TAG_compile_unit: | |
95554aad | 23168 | case DW_TAG_partial_unit: |
71c25dea TT |
23169 | /* Compilation units have a DW_AT_name that is a filename, not |
23170 | a source language identifier. */ | |
23171 | case DW_TAG_enumeration_type: | |
23172 | case DW_TAG_enumerator: | |
23173 | /* These tags always have simple identifiers already; no need | |
23174 | to canonicalize them. */ | |
2c830f54 | 23175 | return attr_name; |
907af001 | 23176 | |
96553a0c | 23177 | case DW_TAG_namespace: |
2c830f54 TT |
23178 | if (attr_name != nullptr) |
23179 | return attr_name; | |
96553a0c DE |
23180 | return CP_ANONYMOUS_NAMESPACE_STR; |
23181 | ||
907af001 UW |
23182 | case DW_TAG_class_type: |
23183 | case DW_TAG_interface_type: | |
23184 | case DW_TAG_structure_type: | |
23185 | case DW_TAG_union_type: | |
23186 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23187 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23188 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23189 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23190 | if (attr_name != nullptr |
23191 | && (startswith (attr_name, "._") | |
23192 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23193 | return NULL; |
53832f31 TT |
23194 | |
23195 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23196 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23197 | if (!attr || attr_name == NULL) |
53832f31 | 23198 | { |
73b9be8b | 23199 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23200 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23201 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23202 | return NULL; |
23203 | ||
2c830f54 | 23204 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23205 | call for the same DIE. */ |
3b64bf15 | 23206 | if (!attr->canonical_string_p ()) |
53832f31 | 23207 | { |
43816ebc | 23208 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23209 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23210 | if (demangled == nullptr) |
23211 | return nullptr; | |
43816ebc | 23212 | |
c6481205 | 23213 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23214 | attr_name = attr->as_string (); |
53832f31 | 23215 | } |
67430cd0 | 23216 | |
2c830f54 TT |
23217 | /* Strip any leading namespaces/classes, keep only the |
23218 | base name. DW_AT_name for named DIEs does not | |
23219 | contain the prefixes. */ | |
23220 | const char *base = strrchr (attr_name, ':'); | |
23221 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23222 | return &base[1]; |
23223 | else | |
2c830f54 | 23224 | return attr_name; |
53832f31 | 23225 | } |
907af001 UW |
23226 | break; |
23227 | ||
71c25dea | 23228 | default: |
907af001 UW |
23229 | break; |
23230 | } | |
23231 | ||
3b64bf15 | 23232 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23233 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23234 | objfile)); | |
2c830f54 | 23235 | return attr->as_string (); |
9219021c DC |
23236 | } |
23237 | ||
23238 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23239 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23240 | containing the return value on output. */ | |
9219021c DC |
23241 | |
23242 | static struct die_info * | |
f2f0e013 | 23243 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23244 | { |
23245 | struct attribute *attr; | |
9219021c | 23246 | |
f2f0e013 | 23247 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23248 | if (attr == NULL) |
23249 | return NULL; | |
23250 | ||
f2f0e013 | 23251 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23252 | } |
23253 | ||
f9aca02d | 23254 | static void |
d97bc12b | 23255 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23256 | { |
23257 | unsigned int i; | |
23258 | ||
d97bc12b | 23259 | print_spaces (indent, f); |
9d8780f0 | 23260 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23261 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23262 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23263 | |
23264 | if (die->parent != NULL) | |
23265 | { | |
23266 | print_spaces (indent, f); | |
9d8780f0 SM |
23267 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23268 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23269 | } |
23270 | ||
23271 | print_spaces (indent, f); | |
23272 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23273 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23274 | |
d97bc12b DE |
23275 | print_spaces (indent, f); |
23276 | fprintf_unfiltered (f, " attributes:\n"); | |
23277 | ||
c906108c SS |
23278 | for (i = 0; i < die->num_attrs; ++i) |
23279 | { | |
d97bc12b DE |
23280 | print_spaces (indent, f); |
23281 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23282 | dwarf_attr_name (die->attrs[i].name), |
23283 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23284 | |
c906108c SS |
23285 | switch (die->attrs[i].form) |
23286 | { | |
c906108c | 23287 | case DW_FORM_addr: |
336d760d | 23288 | case DW_FORM_addrx: |
3019eac3 | 23289 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23290 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23291 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23292 | break; |
23293 | case DW_FORM_block2: | |
23294 | case DW_FORM_block4: | |
23295 | case DW_FORM_block: | |
23296 | case DW_FORM_block1: | |
56eb65bd | 23297 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23298 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23299 | break; |
2dc7f7b3 | 23300 | case DW_FORM_exprloc: |
56eb65bd | 23301 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23302 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23303 | break; |
0224619f JK |
23304 | case DW_FORM_data16: |
23305 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23306 | break; | |
4568ecf9 DE |
23307 | case DW_FORM_ref_addr: |
23308 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23309 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23310 | break; |
36586728 TT |
23311 | case DW_FORM_GNU_ref_alt: |
23312 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23313 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23314 | break; |
10b3939b DJ |
23315 | case DW_FORM_ref1: |
23316 | case DW_FORM_ref2: | |
23317 | case DW_FORM_ref4: | |
4568ecf9 DE |
23318 | case DW_FORM_ref8: |
23319 | case DW_FORM_ref_udata: | |
d97bc12b | 23320 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23321 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23322 | break; |
c906108c SS |
23323 | case DW_FORM_data1: |
23324 | case DW_FORM_data2: | |
23325 | case DW_FORM_data4: | |
ce5d95e1 | 23326 | case DW_FORM_data8: |
c906108c | 23327 | case DW_FORM_udata: |
43bbcdc2 | 23328 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23329 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23330 | break; |
2dc7f7b3 TT |
23331 | case DW_FORM_sec_offset: |
23332 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23333 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23334 | break; |
55f1336d | 23335 | case DW_FORM_ref_sig8: |
ac9ec31b | 23336 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23337 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23338 | break; |
c906108c | 23339 | case DW_FORM_string: |
4bdf3d34 | 23340 | case DW_FORM_strp: |
43988095 | 23341 | case DW_FORM_line_strp: |
cf532bd1 | 23342 | case DW_FORM_strx: |
3019eac3 | 23343 | case DW_FORM_GNU_str_index: |
36586728 | 23344 | case DW_FORM_GNU_strp_alt: |
8285870a | 23345 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23346 | die->attrs[i].as_string () |
23347 | ? die->attrs[i].as_string () : "", | |
23348 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23349 | break; |
23350 | case DW_FORM_flag: | |
c45bc3f8 | 23351 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23352 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23353 | else |
d97bc12b | 23354 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23355 | break; |
2dc7f7b3 TT |
23356 | case DW_FORM_flag_present: |
23357 | fprintf_unfiltered (f, "flag: TRUE"); | |
23358 | break; | |
a8329558 | 23359 | case DW_FORM_indirect: |
0963b4bd MS |
23360 | /* The reader will have reduced the indirect form to |
23361 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23362 | fprintf_unfiltered (f, |
3e43a32a | 23363 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23364 | break; |
1bc397c5 | 23365 | case DW_FORM_sdata: |
663c44ac JK |
23366 | case DW_FORM_implicit_const: |
23367 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23368 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23369 | break; |
c906108c | 23370 | default: |
d97bc12b | 23371 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23372 | die->attrs[i].form); |
d97bc12b | 23373 | break; |
c906108c | 23374 | } |
d97bc12b | 23375 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23376 | } |
23377 | } | |
23378 | ||
f9aca02d | 23379 | static void |
d97bc12b | 23380 | dump_die_for_error (struct die_info *die) |
c906108c | 23381 | { |
d97bc12b DE |
23382 | dump_die_shallow (gdb_stderr, 0, die); |
23383 | } | |
23384 | ||
23385 | static void | |
23386 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23387 | { | |
23388 | int indent = level * 4; | |
23389 | ||
23390 | gdb_assert (die != NULL); | |
23391 | ||
23392 | if (level >= max_level) | |
23393 | return; | |
23394 | ||
23395 | dump_die_shallow (f, indent, die); | |
23396 | ||
23397 | if (die->child != NULL) | |
c906108c | 23398 | { |
d97bc12b DE |
23399 | print_spaces (indent, f); |
23400 | fprintf_unfiltered (f, " Children:"); | |
23401 | if (level + 1 < max_level) | |
23402 | { | |
23403 | fprintf_unfiltered (f, "\n"); | |
23404 | dump_die_1 (f, level + 1, max_level, die->child); | |
23405 | } | |
23406 | else | |
23407 | { | |
3e43a32a MS |
23408 | fprintf_unfiltered (f, |
23409 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23410 | } |
23411 | } | |
23412 | ||
23413 | if (die->sibling != NULL && level > 0) | |
23414 | { | |
23415 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23416 | } |
23417 | } | |
23418 | ||
d97bc12b DE |
23419 | /* This is called from the pdie macro in gdbinit.in. |
23420 | It's not static so gcc will keep a copy callable from gdb. */ | |
23421 | ||
23422 | void | |
23423 | dump_die (struct die_info *die, int max_level) | |
23424 | { | |
23425 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23426 | } | |
23427 | ||
f9aca02d | 23428 | static void |
51545339 | 23429 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23430 | { |
51545339 | 23431 | void **slot; |
c906108c | 23432 | |
9c541725 PA |
23433 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23434 | to_underlying (die->sect_off), | |
b64f50a1 | 23435 | INSERT); |
51545339 DJ |
23436 | |
23437 | *slot = die; | |
c906108c SS |
23438 | } |
23439 | ||
348e048f DE |
23440 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23441 | On entry *REF_CU is the CU of SRC_DIE. | |
23442 | On exit *REF_CU is the CU of the result. */ | |
23443 | ||
23444 | static struct die_info * | |
ff39bb5e | 23445 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23446 | struct dwarf2_cu **ref_cu) |
23447 | { | |
23448 | struct die_info *die; | |
23449 | ||
cd6c91b4 | 23450 | if (attr->form_is_ref ()) |
348e048f | 23451 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23452 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23453 | die = follow_die_sig (src_die, attr, ref_cu); |
23454 | else | |
23455 | { | |
23456 | dump_die_for_error (src_die); | |
23457 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23458 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23459 | } |
23460 | ||
23461 | return die; | |
03dd20cc DJ |
23462 | } |
23463 | ||
5c631832 | 23464 | /* Follow reference OFFSET. |
673bfd45 DE |
23465 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23466 | On exit *REF_CU is the CU of the result. | |
23467 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23468 | |
f9aca02d | 23469 | static struct die_info * |
9c541725 | 23470 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23471 | struct dwarf2_cu **ref_cu) |
c906108c | 23472 | { |
10b3939b | 23473 | struct die_info temp_die; |
f2f0e013 | 23474 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23475 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23476 | |
348e048f DE |
23477 | gdb_assert (cu->per_cu != NULL); |
23478 | ||
98bfdba5 PA |
23479 | target_cu = cu; |
23480 | ||
17e593e9 SM |
23481 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23482 | "source CU contains target offset: %d", | |
23483 | sect_offset_str (cu->per_cu->sect_off), | |
23484 | sect_offset_str (sect_off), | |
23485 | cu->header.offset_in_cu_p (sect_off)); | |
23486 | ||
3019eac3 | 23487 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23488 | { |
23489 | /* .debug_types CUs cannot reference anything outside their CU. | |
23490 | If they need to, they have to reference a signatured type via | |
55f1336d | 23491 | DW_FORM_ref_sig8. */ |
4057dfde | 23492 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23493 | return NULL; |
348e048f | 23494 | } |
36586728 | 23495 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23496 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23497 | { |
23498 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23499 | |
9c541725 | 23500 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23501 | per_objfile); |
03dd20cc | 23502 | |
17e593e9 SM |
23503 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23504 | "target CU DIEs loaded: %d", | |
23505 | sect_offset_str (per_cu->sect_off), | |
23506 | per_objfile->get_cu (per_cu) != nullptr); | |
23507 | ||
616c069a SM |
23508 | /* If necessary, add it to the queue and load its DIEs. |
23509 | ||
23510 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23511 | it doesn't mean they are currently loaded. Since we require them | |
23512 | to be loaded, we must check for ourselves. */ | |
23513 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23514 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23515 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23516 | false, cu->language); | |
03dd20cc | 23517 | |
976ca316 | 23518 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23519 | gdb_assert (target_cu != nullptr); |
10b3939b | 23520 | } |
98bfdba5 PA |
23521 | else if (cu->dies == NULL) |
23522 | { | |
23523 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23524 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23525 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23526 | language_minimal); | |
98bfdba5 | 23527 | } |
c906108c | 23528 | |
f2f0e013 | 23529 | *ref_cu = target_cu; |
9c541725 | 23530 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23531 | |
23532 | if (target_cu != cu) | |
23533 | target_cu->ancestor = cu; | |
23534 | ||
9a3c8263 | 23535 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23536 | &temp_die, |
23537 | to_underlying (sect_off)); | |
5c631832 | 23538 | } |
10b3939b | 23539 | |
5c631832 JK |
23540 | /* Follow reference attribute ATTR of SRC_DIE. |
23541 | On entry *REF_CU is the CU of SRC_DIE. | |
23542 | On exit *REF_CU is the CU of the result. */ | |
23543 | ||
23544 | static struct die_info * | |
ff39bb5e | 23545 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23546 | struct dwarf2_cu **ref_cu) |
23547 | { | |
0826b30a | 23548 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23549 | struct dwarf2_cu *cu = *ref_cu; |
23550 | struct die_info *die; | |
23551 | ||
9c541725 | 23552 | die = follow_die_offset (sect_off, |
36586728 TT |
23553 | (attr->form == DW_FORM_GNU_ref_alt |
23554 | || cu->per_cu->is_dwz), | |
23555 | ref_cu); | |
5c631832 | 23556 | if (!die) |
9d8780f0 SM |
23557 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23558 | "at %s [in module %s]"), | |
23559 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23560 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23561 | |
5c631832 JK |
23562 | return die; |
23563 | } | |
23564 | ||
d4c9a4f8 | 23565 | /* See read.h. */ |
5c631832 JK |
23566 | |
23567 | struct dwarf2_locexpr_baton | |
9c541725 | 23568 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23569 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23570 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23571 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23572 | bool resolve_abstract_p) | |
5c631832 | 23573 | { |
5c631832 JK |
23574 | struct die_info *die; |
23575 | struct attribute *attr; | |
23576 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23577 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23578 | |
976ca316 | 23579 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23580 | if (cu == nullptr) |
976ca316 | 23581 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23582 | |
23583 | if (cu == nullptr) | |
cc12ce38 DE |
23584 | { |
23585 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23586 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23587 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23588 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23589 | } |
918dd910 | 23590 | |
9c541725 | 23591 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23592 | if (!die) |
9d8780f0 SM |
23593 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23594 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23595 | |
23596 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23597 | if (!attr && resolve_abstract_p |
976ca316 SM |
23598 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23599 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23600 | { |
041d9819 | 23601 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23602 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23603 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23604 | |
3360b6e7 | 23605 | for (const auto &cand_off |
976ca316 | 23606 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23607 | { |
3360b6e7 TV |
23608 | struct dwarf2_cu *cand_cu = cu; |
23609 | struct die_info *cand | |
23610 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23611 | if (!cand | |
23612 | || !cand->parent | |
e4a62c65 TV |
23613 | || cand->parent->tag != DW_TAG_subprogram) |
23614 | continue; | |
23615 | ||
23616 | CORE_ADDR pc_low, pc_high; | |
23617 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23618 | if (pc_low == ((CORE_ADDR) -1)) |
23619 | continue; | |
23620 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23621 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23622 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23623 | continue; |
23624 | ||
23625 | die = cand; | |
23626 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23627 | break; | |
23628 | } | |
23629 | } | |
23630 | ||
5c631832 JK |
23631 | if (!attr) |
23632 | { | |
e103e986 JK |
23633 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23634 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23635 | |
e103e986 | 23636 | retval.data = NULL; |
5c631832 JK |
23637 | retval.size = 0; |
23638 | } | |
cd6c91b4 | 23639 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23640 | { |
23641 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23642 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23643 | size_t size; |
23644 | ||
23645 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23646 | ||
23647 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23648 | &size, pc); | |
23649 | retval.size = size; | |
23650 | } | |
5c631832 JK |
23651 | else |
23652 | { | |
4fc6c0d5 | 23653 | if (!attr->form_is_block ()) |
9d8780f0 | 23654 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23655 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23656 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23657 | |
9d2246fc TT |
23658 | struct dwarf_block *block = attr->as_block (); |
23659 | retval.data = block->data; | |
23660 | retval.size = block->size; | |
5c631832 | 23661 | } |
976ca316 | 23662 | retval.per_objfile = per_objfile; |
5c631832 | 23663 | retval.per_cu = cu->per_cu; |
918dd910 | 23664 | |
976ca316 | 23665 | per_objfile->age_comp_units (); |
918dd910 | 23666 | |
5c631832 | 23667 | return retval; |
348e048f DE |
23668 | } |
23669 | ||
d4c9a4f8 | 23670 | /* See read.h. */ |
8b9737bf TT |
23671 | |
23672 | struct dwarf2_locexpr_baton | |
23673 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23674 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23675 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23676 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23677 | { |
9c541725 | 23678 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23679 | |
14095eb3 | 23680 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23681 | get_frame_pc); |
8b9737bf TT |
23682 | } |
23683 | ||
b6807d98 TT |
23684 | /* Write a constant of a given type as target-ordered bytes into |
23685 | OBSTACK. */ | |
23686 | ||
23687 | static const gdb_byte * | |
23688 | write_constant_as_bytes (struct obstack *obstack, | |
23689 | enum bfd_endian byte_order, | |
23690 | struct type *type, | |
23691 | ULONGEST value, | |
23692 | LONGEST *len) | |
23693 | { | |
23694 | gdb_byte *result; | |
23695 | ||
23696 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23697 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23698 | store_unsigned_integer (result, *len, byte_order, value); |
23699 | ||
23700 | return result; | |
23701 | } | |
23702 | ||
d4c9a4f8 | 23703 | /* See read.h. */ |
b6807d98 TT |
23704 | |
23705 | const gdb_byte * | |
9c541725 | 23706 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23707 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23708 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23709 | obstack *obstack, |
b6807d98 TT |
23710 | LONGEST *len) |
23711 | { | |
b6807d98 TT |
23712 | struct die_info *die; |
23713 | struct attribute *attr; | |
23714 | const gdb_byte *result = NULL; | |
23715 | struct type *type; | |
23716 | LONGEST value; | |
23717 | enum bfd_endian byte_order; | |
14095eb3 | 23718 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23719 | |
7188ed02 | 23720 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23721 | if (cu == nullptr) |
23722 | cu = load_cu (per_cu, per_objfile, false); | |
23723 | ||
23724 | if (cu == nullptr) | |
cc12ce38 DE |
23725 | { |
23726 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23727 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23728 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23729 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23730 | } |
b6807d98 | 23731 | |
9c541725 | 23732 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23733 | if (!die) |
9d8780f0 SM |
23734 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23735 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23736 | |
23737 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23738 | if (attr == NULL) | |
23739 | return NULL; | |
23740 | ||
e3b94546 | 23741 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23742 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23743 | ||
23744 | switch (attr->form) | |
23745 | { | |
23746 | case DW_FORM_addr: | |
336d760d | 23747 | case DW_FORM_addrx: |
b6807d98 TT |
23748 | case DW_FORM_GNU_addr_index: |
23749 | { | |
23750 | gdb_byte *tem; | |
23751 | ||
23752 | *len = cu->header.addr_size; | |
224c3ddb | 23753 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23754 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23755 | result = tem; |
23756 | } | |
23757 | break; | |
23758 | case DW_FORM_string: | |
23759 | case DW_FORM_strp: | |
cf532bd1 | 23760 | case DW_FORM_strx: |
b6807d98 TT |
23761 | case DW_FORM_GNU_str_index: |
23762 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23763 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23764 | directly to it. */ |
2c830f54 TT |
23765 | { |
23766 | const char *attr_name = attr->as_string (); | |
23767 | result = (const gdb_byte *) attr_name; | |
23768 | *len = strlen (attr_name); | |
23769 | } | |
b6807d98 TT |
23770 | break; |
23771 | case DW_FORM_block1: | |
23772 | case DW_FORM_block2: | |
23773 | case DW_FORM_block4: | |
23774 | case DW_FORM_block: | |
23775 | case DW_FORM_exprloc: | |
0224619f | 23776 | case DW_FORM_data16: |
9d2246fc TT |
23777 | { |
23778 | struct dwarf_block *block = attr->as_block (); | |
23779 | result = block->data; | |
23780 | *len = block->size; | |
23781 | } | |
b6807d98 TT |
23782 | break; |
23783 | ||
23784 | /* The DW_AT_const_value attributes are supposed to carry the | |
23785 | symbol's value "represented as it would be on the target | |
23786 | architecture." By the time we get here, it's already been | |
23787 | converted to host endianness, so we just need to sign- or | |
23788 | zero-extend it as appropriate. */ | |
23789 | case DW_FORM_data1: | |
23790 | type = die_type (die, cu); | |
23791 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23792 | if (result == NULL) | |
23793 | result = write_constant_as_bytes (obstack, byte_order, | |
23794 | type, value, len); | |
23795 | break; | |
23796 | case DW_FORM_data2: | |
23797 | type = die_type (die, cu); | |
23798 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23799 | if (result == NULL) | |
23800 | result = write_constant_as_bytes (obstack, byte_order, | |
23801 | type, value, len); | |
23802 | break; | |
23803 | case DW_FORM_data4: | |
23804 | type = die_type (die, cu); | |
23805 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23806 | if (result == NULL) | |
23807 | result = write_constant_as_bytes (obstack, byte_order, | |
23808 | type, value, len); | |
23809 | break; | |
23810 | case DW_FORM_data8: | |
23811 | type = die_type (die, cu); | |
23812 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23813 | if (result == NULL) | |
23814 | result = write_constant_as_bytes (obstack, byte_order, | |
23815 | type, value, len); | |
23816 | break; | |
23817 | ||
23818 | case DW_FORM_sdata: | |
663c44ac | 23819 | case DW_FORM_implicit_const: |
b6807d98 TT |
23820 | type = die_type (die, cu); |
23821 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23822 | type, attr->as_signed (), len); |
b6807d98 TT |
23823 | break; |
23824 | ||
23825 | case DW_FORM_udata: | |
23826 | type = die_type (die, cu); | |
23827 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23828 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23829 | break; |
23830 | ||
23831 | default: | |
b98664d3 | 23832 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23833 | dwarf_form_name (attr->form)); |
23834 | break; | |
23835 | } | |
23836 | ||
23837 | return result; | |
23838 | } | |
23839 | ||
d4c9a4f8 | 23840 | /* See read.h. */ |
7942e96e AA |
23841 | |
23842 | struct type * | |
9c541725 | 23843 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23844 | dwarf2_per_cu_data *per_cu, |
23845 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23846 | { |
7942e96e AA |
23847 | struct die_info *die; |
23848 | ||
7188ed02 | 23849 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23850 | if (cu == nullptr) |
23851 | cu = load_cu (per_cu, per_objfile, false); | |
23852 | ||
23853 | if (cu == nullptr) | |
23854 | return nullptr; | |
7942e96e | 23855 | |
9c541725 | 23856 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23857 | if (!die) |
23858 | return NULL; | |
23859 | ||
23860 | return die_type (die, cu); | |
23861 | } | |
23862 | ||
8cb5117c | 23863 | /* See read.h. */ |
8a9b8146 TT |
23864 | |
23865 | struct type * | |
b64f50a1 | 23866 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23867 | dwarf2_per_cu_data *per_cu, |
23868 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23869 | { |
9c541725 | 23870 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23871 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23872 | } |
23873 | ||
ac9ec31b | 23874 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23875 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23876 | On exit *REF_CU is the CU of the result. |
23877 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23878 | |
23879 | static struct die_info * | |
ac9ec31b DE |
23880 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23881 | struct dwarf2_cu **ref_cu) | |
348e048f | 23882 | { |
348e048f | 23883 | struct die_info temp_die; |
c24bdb02 | 23884 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23885 | struct die_info *die; |
976ca316 | 23886 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23887 | |
348e048f | 23888 | |
ac9ec31b DE |
23889 | /* While it might be nice to assert sig_type->type == NULL here, |
23890 | we can get here for DW_AT_imported_declaration where we need | |
23891 | the DIE not the type. */ | |
348e048f | 23892 | |
616c069a | 23893 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 23894 | |
616c069a SM |
23895 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
23896 | it doesn't mean they are currently loaded. Since we require them | |
23897 | to be loaded, we must check for ourselves. */ | |
976ca316 | 23898 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
616c069a SM |
23899 | language_minimal) |
23900 | || per_objfile->get_cu (&sig_type->per_cu) == nullptr) | |
976ca316 | 23901 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23902 | |
976ca316 | 23903 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 23904 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23905 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23906 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23907 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23908 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23909 | if (die) |
23910 | { | |
796a7ff8 DE |
23911 | /* For .gdb_index version 7 keep track of included TUs. |
23912 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23913 | if (per_objfile->per_bfd->index_table != NULL |
23914 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23915 | { |
ae640021 | 23916 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23917 | } |
23918 | ||
348e048f | 23919 | *ref_cu = sig_cu; |
c24bdb02 KS |
23920 | if (sig_cu != cu) |
23921 | sig_cu->ancestor = cu; | |
23922 | ||
348e048f DE |
23923 | return die; |
23924 | } | |
23925 | ||
ac9ec31b DE |
23926 | return NULL; |
23927 | } | |
23928 | ||
23929 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23930 | On entry *REF_CU is the CU of SRC_DIE. | |
23931 | On exit *REF_CU is the CU of the result. | |
23932 | The result is the DIE of the type. | |
23933 | If the referenced type cannot be found an error is thrown. */ | |
23934 | ||
23935 | static struct die_info * | |
ff39bb5e | 23936 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23937 | struct dwarf2_cu **ref_cu) |
23938 | { | |
630ed6b9 | 23939 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23940 | struct signatured_type *sig_type; |
23941 | struct die_info *die; | |
23942 | ||
23943 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23944 | ||
a2ce51a0 | 23945 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23946 | /* sig_type will be NULL if the signatured type is missing from |
23947 | the debug info. */ | |
23948 | if (sig_type == NULL) | |
23949 | { | |
23950 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
23951 | " from DIE at %s [in module %s]"), |
23952 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23953 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23954 | } |
23955 | ||
23956 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23957 | if (die == NULL) | |
23958 | { | |
23959 | dump_die_for_error (src_die); | |
23960 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23961 | " from DIE at %s [in module %s]"), |
23962 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23963 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23964 | } |
23965 | ||
23966 | return die; | |
23967 | } | |
23968 | ||
23969 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23970 | reading in and processing the type unit if necessary. */ | |
23971 | ||
23972 | static struct type * | |
23973 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23974 | struct dwarf2_cu *cu) | |
23975 | { | |
976ca316 | 23976 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23977 | struct signatured_type *sig_type; |
23978 | struct dwarf2_cu *type_cu; | |
23979 | struct die_info *type_die; | |
23980 | struct type *type; | |
23981 | ||
a2ce51a0 | 23982 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23983 | /* sig_type will be NULL if the signatured type is missing from |
23984 | the debug info. */ | |
23985 | if (sig_type == NULL) | |
23986 | { | |
b98664d3 | 23987 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23988 | " from DIE at %s [in module %s]"), |
23989 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23990 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23991 | return build_error_marker_type (cu, die); |
23992 | } | |
23993 | ||
23994 | /* If we already know the type we're done. */ | |
976ca316 | 23995 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23996 | if (type != nullptr) |
23997 | return type; | |
ac9ec31b DE |
23998 | |
23999 | type_cu = cu; | |
24000 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24001 | if (type_die != NULL) | |
24002 | { | |
24003 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24004 | is created. This is important, for example, because for c++ classes | |
24005 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24006 | type = read_type_die (type_die, type_cu); | |
24007 | if (type == NULL) | |
24008 | { | |
b98664d3 | 24009 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24010 | " referenced from DIE at %s [in module %s]"), |
24011 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24012 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24013 | type = build_error_marker_type (cu, die); |
24014 | } | |
24015 | } | |
24016 | else | |
24017 | { | |
b98664d3 | 24018 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24019 | " from DIE at %s [in module %s]"), |
24020 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24021 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24022 | type = build_error_marker_type (cu, die); |
24023 | } | |
e286671b | 24024 | |
976ca316 | 24025 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24026 | |
24027 | return type; | |
24028 | } | |
24029 | ||
24030 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24031 | reading in and processing the type unit if necessary. */ | |
24032 | ||
24033 | static struct type * | |
ff39bb5e | 24034 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24035 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24036 | { |
24037 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24038 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24039 | { |
24040 | struct dwarf2_cu *type_cu = cu; | |
24041 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24042 | ||
24043 | return read_type_die (type_die, type_cu); | |
24044 | } | |
24045 | else if (attr->form == DW_FORM_ref_sig8) | |
24046 | { | |
630ed6b9 | 24047 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24048 | } |
24049 | else | |
24050 | { | |
976ca316 | 24051 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24052 | |
b98664d3 | 24053 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24054 | " at %s [in module %s]"), |
24055 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24056 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24057 | return build_error_marker_type (cu, die); |
24058 | } | |
348e048f DE |
24059 | } |
24060 | ||
e5fe5e75 | 24061 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24062 | |
24063 | static void | |
ab432490 SM |
24064 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24065 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24066 | { |
52dc124a | 24067 | struct signatured_type *sig_type; |
348e048f | 24068 | |
f4dc4d17 | 24069 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24070 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24071 | |
6721b2ec DE |
24072 | /* We have the per_cu, but we need the signatured_type. |
24073 | Fortunately this is an easy translation. */ | |
24074 | gdb_assert (per_cu->is_debug_types); | |
24075 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24076 | |
7188ed02 | 24077 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24078 | |
ab432490 | 24079 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24080 | |
7188ed02 | 24081 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24082 | } |
24083 | ||
3019eac3 DE |
24084 | /* Read in a signatured type and build its CU and DIEs. |
24085 | If the type is a stub for the real type in a DWO file, | |
24086 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24087 | |
24088 | static void | |
ab432490 SM |
24089 | read_signatured_type (signatured_type *sig_type, |
24090 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24091 | { |
24092 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24093 | |
3019eac3 | 24094 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24095 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24096 | |
2e671100 | 24097 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24098 | |
24099 | if (!reader.dummy_p) | |
24100 | { | |
24101 | struct dwarf2_cu *cu = reader.cu; | |
24102 | const gdb_byte *info_ptr = reader.info_ptr; | |
24103 | ||
24104 | gdb_assert (cu->die_hash == NULL); | |
24105 | cu->die_hash = | |
24106 | htab_create_alloc_ex (cu->header.length / 12, | |
24107 | die_hash, | |
24108 | die_eq, | |
24109 | NULL, | |
24110 | &cu->comp_unit_obstack, | |
24111 | hashtab_obstack_allocate, | |
24112 | dummy_obstack_deallocate); | |
24113 | ||
3e225074 | 24114 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24115 | reader.comp_unit_die->child |
24116 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24117 | reader.comp_unit_die); | |
24118 | cu->dies = reader.comp_unit_die; | |
24119 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24120 | ||
24121 | /* We try not to read any attributes in this function, because | |
24122 | not all CUs needed for references have been loaded yet, and | |
24123 | symbol table processing isn't initialized. But we have to | |
24124 | set the CU language, or we won't be able to build types | |
24125 | correctly. Similarly, if we do not read the producer, we can | |
24126 | not apply producer-specific interpretation. */ | |
24127 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24128 | |
24129 | reader.keep (); | |
c0ab21c2 TT |
24130 | } |
24131 | ||
7ee85ab1 | 24132 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24133 | } |
24134 | ||
c906108c SS |
24135 | /* Decode simple location descriptions. |
24136 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24137 | the location and return the value. If COMPUTED is non-null, it is |
24138 | set to true to indicate that decoding was successful, and false | |
24139 | otherwise. If COMPUTED is null, then this function may emit a | |
24140 | complaint. */ | |
c906108c SS |
24141 | |
24142 | static CORE_ADDR | |
7d79de9a | 24143 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24144 | { |
5e22e966 | 24145 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24146 | size_t i; |
24147 | size_t size = blk->size; | |
d521ce57 | 24148 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24149 | CORE_ADDR stack[64]; |
24150 | int stacki; | |
24151 | unsigned int bytes_read, unsnd; | |
24152 | gdb_byte op; | |
c906108c | 24153 | |
7d79de9a TT |
24154 | if (computed != nullptr) |
24155 | *computed = false; | |
24156 | ||
21ae7a4d JK |
24157 | i = 0; |
24158 | stacki = 0; | |
24159 | stack[stacki] = 0; | |
24160 | stack[++stacki] = 0; | |
24161 | ||
24162 | while (i < size) | |
24163 | { | |
24164 | op = data[i++]; | |
24165 | switch (op) | |
24166 | { | |
24167 | case DW_OP_lit0: | |
24168 | case DW_OP_lit1: | |
24169 | case DW_OP_lit2: | |
24170 | case DW_OP_lit3: | |
24171 | case DW_OP_lit4: | |
24172 | case DW_OP_lit5: | |
24173 | case DW_OP_lit6: | |
24174 | case DW_OP_lit7: | |
24175 | case DW_OP_lit8: | |
24176 | case DW_OP_lit9: | |
24177 | case DW_OP_lit10: | |
24178 | case DW_OP_lit11: | |
24179 | case DW_OP_lit12: | |
24180 | case DW_OP_lit13: | |
24181 | case DW_OP_lit14: | |
24182 | case DW_OP_lit15: | |
24183 | case DW_OP_lit16: | |
24184 | case DW_OP_lit17: | |
24185 | case DW_OP_lit18: | |
24186 | case DW_OP_lit19: | |
24187 | case DW_OP_lit20: | |
24188 | case DW_OP_lit21: | |
24189 | case DW_OP_lit22: | |
24190 | case DW_OP_lit23: | |
24191 | case DW_OP_lit24: | |
24192 | case DW_OP_lit25: | |
24193 | case DW_OP_lit26: | |
24194 | case DW_OP_lit27: | |
24195 | case DW_OP_lit28: | |
24196 | case DW_OP_lit29: | |
24197 | case DW_OP_lit30: | |
24198 | case DW_OP_lit31: | |
24199 | stack[++stacki] = op - DW_OP_lit0; | |
24200 | break; | |
f1bea926 | 24201 | |
21ae7a4d JK |
24202 | case DW_OP_reg0: |
24203 | case DW_OP_reg1: | |
24204 | case DW_OP_reg2: | |
24205 | case DW_OP_reg3: | |
24206 | case DW_OP_reg4: | |
24207 | case DW_OP_reg5: | |
24208 | case DW_OP_reg6: | |
24209 | case DW_OP_reg7: | |
24210 | case DW_OP_reg8: | |
24211 | case DW_OP_reg9: | |
24212 | case DW_OP_reg10: | |
24213 | case DW_OP_reg11: | |
24214 | case DW_OP_reg12: | |
24215 | case DW_OP_reg13: | |
24216 | case DW_OP_reg14: | |
24217 | case DW_OP_reg15: | |
24218 | case DW_OP_reg16: | |
24219 | case DW_OP_reg17: | |
24220 | case DW_OP_reg18: | |
24221 | case DW_OP_reg19: | |
24222 | case DW_OP_reg20: | |
24223 | case DW_OP_reg21: | |
24224 | case DW_OP_reg22: | |
24225 | case DW_OP_reg23: | |
24226 | case DW_OP_reg24: | |
24227 | case DW_OP_reg25: | |
24228 | case DW_OP_reg26: | |
24229 | case DW_OP_reg27: | |
24230 | case DW_OP_reg28: | |
24231 | case DW_OP_reg29: | |
24232 | case DW_OP_reg30: | |
24233 | case DW_OP_reg31: | |
24234 | stack[++stacki] = op - DW_OP_reg0; | |
24235 | if (i < size) | |
7d79de9a TT |
24236 | { |
24237 | if (computed == nullptr) | |
24238 | dwarf2_complex_location_expr_complaint (); | |
24239 | else | |
24240 | return 0; | |
24241 | } | |
21ae7a4d | 24242 | break; |
c906108c | 24243 | |
21ae7a4d JK |
24244 | case DW_OP_regx: |
24245 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24246 | i += bytes_read; | |
24247 | stack[++stacki] = unsnd; | |
24248 | if (i < size) | |
7d79de9a TT |
24249 | { |
24250 | if (computed == nullptr) | |
24251 | dwarf2_complex_location_expr_complaint (); | |
24252 | else | |
24253 | return 0; | |
24254 | } | |
21ae7a4d | 24255 | break; |
c906108c | 24256 | |
21ae7a4d | 24257 | case DW_OP_addr: |
c8a7a66f TT |
24258 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24259 | &bytes_read); | |
21ae7a4d JK |
24260 | i += bytes_read; |
24261 | break; | |
d53d4ac5 | 24262 | |
21ae7a4d JK |
24263 | case DW_OP_const1u: |
24264 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24265 | i += 1; | |
24266 | break; | |
24267 | ||
24268 | case DW_OP_const1s: | |
24269 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24270 | i += 1; | |
24271 | break; | |
24272 | ||
24273 | case DW_OP_const2u: | |
24274 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24275 | i += 2; | |
24276 | break; | |
24277 | ||
24278 | case DW_OP_const2s: | |
24279 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24280 | i += 2; | |
24281 | break; | |
d53d4ac5 | 24282 | |
21ae7a4d JK |
24283 | case DW_OP_const4u: |
24284 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24285 | i += 4; | |
24286 | break; | |
24287 | ||
24288 | case DW_OP_const4s: | |
24289 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24290 | i += 4; | |
24291 | break; | |
24292 | ||
585861ea JK |
24293 | case DW_OP_const8u: |
24294 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24295 | i += 8; | |
24296 | break; | |
24297 | ||
21ae7a4d JK |
24298 | case DW_OP_constu: |
24299 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24300 | &bytes_read); | |
24301 | i += bytes_read; | |
24302 | break; | |
24303 | ||
24304 | case DW_OP_consts: | |
24305 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24306 | i += bytes_read; | |
24307 | break; | |
24308 | ||
24309 | case DW_OP_dup: | |
24310 | stack[stacki + 1] = stack[stacki]; | |
24311 | stacki++; | |
24312 | break; | |
24313 | ||
24314 | case DW_OP_plus: | |
24315 | stack[stacki - 1] += stack[stacki]; | |
24316 | stacki--; | |
24317 | break; | |
24318 | ||
24319 | case DW_OP_plus_uconst: | |
24320 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24321 | &bytes_read); | |
24322 | i += bytes_read; | |
24323 | break; | |
24324 | ||
24325 | case DW_OP_minus: | |
24326 | stack[stacki - 1] -= stack[stacki]; | |
24327 | stacki--; | |
24328 | break; | |
24329 | ||
24330 | case DW_OP_deref: | |
24331 | /* If we're not the last op, then we definitely can't encode | |
24332 | this using GDB's address_class enum. This is valid for partial | |
24333 | global symbols, although the variable's address will be bogus | |
24334 | in the psymtab. */ | |
24335 | if (i < size) | |
7d79de9a TT |
24336 | { |
24337 | if (computed == nullptr) | |
24338 | dwarf2_complex_location_expr_complaint (); | |
24339 | else | |
24340 | return 0; | |
24341 | } | |
21ae7a4d JK |
24342 | break; |
24343 | ||
dda83cd7 | 24344 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24345 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24346 | /* The top of the stack has the offset from the beginning |
24347 | of the thread control block at which the variable is located. */ | |
24348 | /* Nothing should follow this operator, so the top of stack would | |
24349 | be returned. */ | |
24350 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24351 | address will be bogus in the psymtab. Make it always at least |
24352 | non-zero to not look as a variable garbage collected by linker | |
24353 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24354 | if (i < size) |
7d79de9a TT |
24355 | { |
24356 | if (computed == nullptr) | |
24357 | dwarf2_complex_location_expr_complaint (); | |
24358 | else | |
24359 | return 0; | |
24360 | } | |
585861ea | 24361 | stack[stacki]++; |
dda83cd7 | 24362 | break; |
21ae7a4d JK |
24363 | |
24364 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24365 | if (computed != nullptr) |
24366 | return 0; | |
21ae7a4d JK |
24367 | break; |
24368 | ||
336d760d | 24369 | case DW_OP_addrx: |
3019eac3 | 24370 | case DW_OP_GNU_addr_index: |
49f6c839 | 24371 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24372 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24373 | &bytes_read); | |
24374 | i += bytes_read; | |
24375 | break; | |
24376 | ||
21ae7a4d | 24377 | default: |
7d79de9a TT |
24378 | if (computed == nullptr) |
24379 | { | |
24380 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24381 | |
7d79de9a TT |
24382 | if (name) |
24383 | complaint (_("unsupported stack op: '%s'"), | |
24384 | name); | |
24385 | else | |
24386 | complaint (_("unsupported stack op: '%02x'"), | |
24387 | op); | |
24388 | } | |
21ae7a4d JK |
24389 | |
24390 | return (stack[stacki]); | |
d53d4ac5 | 24391 | } |
3c6e0cb3 | 24392 | |
21ae7a4d | 24393 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24394 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24395 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24396 | { | |
7d79de9a TT |
24397 | if (computed == nullptr) |
24398 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24399 | return 0; |
24400 | } | |
24401 | ||
24402 | if (stacki <= 0) | |
24403 | { | |
7d79de9a TT |
24404 | if (computed == nullptr) |
24405 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24406 | return 0; |
24407 | } | |
24408 | } | |
7d79de9a TT |
24409 | |
24410 | if (computed != nullptr) | |
24411 | *computed = true; | |
21ae7a4d | 24412 | return (stack[stacki]); |
c906108c SS |
24413 | } |
24414 | ||
24415 | /* memory allocation interface */ | |
24416 | ||
c906108c | 24417 | static struct dwarf_block * |
7b5a2f43 | 24418 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24419 | { |
8d749320 | 24420 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24421 | } |
24422 | ||
c906108c | 24423 | static struct die_info * |
b60c80d6 | 24424 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24425 | { |
24426 | struct die_info *die; | |
b60c80d6 DJ |
24427 | size_t size = sizeof (struct die_info); |
24428 | ||
24429 | if (num_attrs > 1) | |
24430 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24431 | |
b60c80d6 | 24432 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24433 | memset (die, 0, sizeof (struct die_info)); |
24434 | return (die); | |
24435 | } | |
2e276125 JB |
24436 | |
24437 | \f | |
a036ba48 | 24438 | |
c90ec28a | 24439 | /* Macro support. */ |
cf2c3c16 | 24440 | |
9eac9650 TT |
24441 | /* An overload of dwarf_decode_macros that finds the correct section |
24442 | and ensures it is read in before calling the other overload. */ | |
24443 | ||
24444 | static void | |
24445 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24446 | int section_is_gnu) | |
24447 | { | |
976ca316 SM |
24448 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24449 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24450 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24451 | unsigned int offset_size = cu->header.offset_size; |
24452 | struct dwarf2_section_info *section; | |
24453 | const char *section_name; | |
24454 | ||
24455 | if (cu->dwo_unit != nullptr) | |
24456 | { | |
24457 | if (section_is_gnu) | |
24458 | { | |
24459 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24460 | section_name = ".debug_macro.dwo"; | |
24461 | } | |
24462 | else | |
24463 | { | |
24464 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24465 | section_name = ".debug_macinfo.dwo"; | |
24466 | } | |
24467 | } | |
24468 | else | |
24469 | { | |
24470 | if (section_is_gnu) | |
24471 | { | |
976ca316 | 24472 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24473 | section_name = ".debug_macro"; |
24474 | } | |
24475 | else | |
24476 | { | |
976ca316 | 24477 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24478 | section_name = ".debug_macinfo"; |
24479 | } | |
24480 | } | |
24481 | ||
24482 | section->read (objfile); | |
24483 | if (section->buffer == nullptr) | |
24484 | { | |
24485 | complaint (_("missing %s section"), section_name); | |
24486 | return; | |
24487 | } | |
24488 | ||
24489 | buildsym_compunit *builder = cu->get_builder (); | |
24490 | ||
048fde1e | 24491 | struct dwarf2_section_info *str_offsets_section; |
24492 | struct dwarf2_section_info *str_section; | |
24493 | ULONGEST str_offsets_base; | |
24494 | ||
24495 | if (cu->dwo_unit != nullptr) | |
24496 | { | |
24497 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24498 | ->sections.str_offsets; | |
24499 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24500 | str_offsets_base = cu->header.addr_size; | |
24501 | } | |
24502 | else | |
24503 | { | |
24504 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24505 | str_section = &per_objfile->per_bfd->str; | |
24506 | str_offsets_base = *cu->str_offsets_base; | |
24507 | } | |
24508 | ||
976ca316 | 24509 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24510 | offset_size, offset, str_section, str_offsets_section, |
24511 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24512 | } |
24513 | ||
3019eac3 DE |
24514 | /* Return the .debug_loc section to use for CU. |
24515 | For DWO files use .debug_loc.dwo. */ | |
24516 | ||
24517 | static struct dwarf2_section_info * | |
24518 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24519 | { | |
976ca316 | 24520 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24521 | |
3019eac3 | 24522 | if (cu->dwo_unit) |
43988095 JK |
24523 | { |
24524 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24525 | |
43988095 JK |
24526 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24527 | } | |
976ca316 SM |
24528 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24529 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24530 | } |
24531 | ||
d0ce17d8 CT |
24532 | /* Return the .debug_rnglists section to use for CU. */ |
24533 | static struct dwarf2_section_info * | |
24534 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24535 | { | |
24536 | if (cu->header.version < 5) | |
24537 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24538 | cu->header.version); | |
24539 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24540 | ||
24541 | /* Make sure we read the .debug_rnglists section from the file that | |
24542 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24543 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24544 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24545 | program. */ | |
24546 | if (cu->dwo_unit != nullptr | |
24547 | && tag != DW_TAG_compile_unit | |
24548 | && tag != DW_TAG_skeleton_unit) | |
24549 | { | |
24550 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24551 | ||
24552 | if (sections->rnglists.size > 0) | |
24553 | return §ions->rnglists; | |
24554 | else | |
24555 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24556 | } | |
24557 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24558 | } | |
24559 | ||
8cf6f0b1 TT |
24560 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24561 | ||
24562 | static void | |
24563 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24564 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24565 | const struct attribute *attr) |
8cf6f0b1 | 24566 | { |
976ca316 | 24567 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24568 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24569 | ||
976ca316 | 24570 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24571 | |
976ca316 | 24572 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24573 | baton->per_cu = cu->per_cu; |
24574 | gdb_assert (baton->per_cu); | |
24575 | /* We don't know how long the location list is, but make sure we | |
24576 | don't run off the edge of the section. */ | |
d4df075e TT |
24577 | baton->size = section->size - attr->as_unsigned (); |
24578 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24579 | if (cu->base_address.has_value ()) |
24580 | baton->base_address = *cu->base_address; | |
24581 | else | |
24582 | baton->base_address = 0; | |
f664829e | 24583 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24584 | } |
24585 | ||
4c2df51b | 24586 | static void |
ff39bb5e | 24587 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24588 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24589 | { |
976ca316 SM |
24590 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24591 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24592 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24593 | |
cd6c91b4 | 24594 | if (attr->form_is_section_offset () |
3019eac3 | 24595 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24596 | the section. If so, fall through to the complaint in the |
24597 | other branch. */ | |
d4df075e | 24598 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24599 | { |
0d53c4c4 | 24600 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24601 | |
8d749320 | 24602 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24603 | |
8cf6f0b1 | 24604 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24605 | |
2b24b6e4 | 24606 | if (!cu->base_address.has_value ()) |
b98664d3 | 24607 | complaint (_("Location list used without " |
3e43a32a | 24608 | "specifying the CU base address.")); |
4c2df51b | 24609 | |
f1e6e072 TT |
24610 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24611 | ? dwarf2_loclist_block_index | |
24612 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24613 | SYMBOL_LOCATION_BATON (sym) = baton; |
24614 | } | |
24615 | else | |
24616 | { | |
24617 | struct dwarf2_locexpr_baton *baton; | |
24618 | ||
8d749320 | 24619 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24620 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24621 | baton->per_cu = cu->per_cu; |
24622 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24623 | |
4fc6c0d5 | 24624 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24625 | { |
24626 | /* Note that we're just copying the block's data pointer | |
24627 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24628 | info_buffer for SYM's objfile; right now we never release |
24629 | that buffer, but when we do clean up properly this may | |
24630 | need to change. */ | |
9d2246fc TT |
24631 | struct dwarf_block *block = attr->as_block (); |
24632 | baton->size = block->size; | |
24633 | baton->data = block->data; | |
0d53c4c4 DJ |
24634 | } |
24635 | else | |
24636 | { | |
24637 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24638 | sym->natural_name ()); |
0d53c4c4 | 24639 | baton->size = 0; |
0d53c4c4 | 24640 | } |
6e70227d | 24641 | |
f1e6e072 TT |
24642 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24643 | ? dwarf2_locexpr_block_index | |
24644 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24645 | SYMBOL_LOCATION_BATON (sym) = baton; |
24646 | } | |
4c2df51b | 24647 | } |
6502dd73 | 24648 | |
2e6a9f79 | 24649 | /* See read.h. */ |
96408a79 | 24650 | |
2e6a9f79 SM |
24651 | const comp_unit_head * |
24652 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24653 | { |
2e6a9f79 SM |
24654 | if (!m_header_read_in) |
24655 | { | |
24656 | const gdb_byte *info_ptr | |
24657 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24658 | |
2e6a9f79 | 24659 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24660 | |
2e6a9f79 SM |
24661 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24662 | rcuh_kind::COMPILE); | |
a9f172c6 TT |
24663 | |
24664 | m_header_read_in = true; | |
2e6a9f79 | 24665 | } |
96408a79 | 24666 | |
2e6a9f79 | 24667 | return &m_header; |
96408a79 SA |
24668 | } |
24669 | ||
09ba997f | 24670 | /* See read.h. */ |
ae0d2f24 | 24671 | |
98714339 | 24672 | int |
09ba997f | 24673 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24674 | { |
2e6a9f79 | 24675 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24676 | } |
24677 | ||
09ba997f | 24678 | /* See read.h. */ |
9eae7c52 TT |
24679 | |
24680 | int | |
09ba997f | 24681 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24682 | { |
2e6a9f79 | 24683 | return this->get_header ()->offset_size; |
96408a79 SA |
24684 | } |
24685 | ||
09ba997f | 24686 | /* See read.h. */ |
96408a79 SA |
24687 | |
24688 | int | |
09ba997f | 24689 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24690 | { |
2e6a9f79 | 24691 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24692 | |
2e6a9f79 SM |
24693 | if (header->version == 2) |
24694 | return header->addr_size; | |
96408a79 | 24695 | else |
2e6a9f79 | 24696 | return header->offset_size; |
181cebd4 JK |
24697 | } |
24698 | ||
09ba997f | 24699 | /* See read.h. */ |
9aa1f1e3 | 24700 | |
09ba997f | 24701 | struct type * |
293e7e51 | 24702 | dwarf2_cu::addr_type () const |
9a49df9d | 24703 | { |
293e7e51 | 24704 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24705 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24706 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24707 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24708 | |
24709 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24710 | return addr_type; | |
24711 | ||
c6d940a9 | 24712 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24713 | return addr_type; |
24714 | } | |
24715 | ||
22b6cd70 TT |
24716 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24717 | the index of the result, and that searches a vector. It will | |
24718 | return a result even if the offset in question does not actually | |
24719 | occur in any CU. This is separate so that it can be unit | |
24720 | tested. */ | |
ae038cb0 | 24721 | |
22b6cd70 TT |
24722 | static int |
24723 | dwarf2_find_containing_comp_unit | |
24724 | (sect_offset sect_off, | |
24725 | unsigned int offset_in_dwz, | |
24726 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24727 | { |
ae038cb0 DJ |
24728 | int low, high; |
24729 | ||
ae038cb0 | 24730 | low = 0; |
22b6cd70 | 24731 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24732 | while (high > low) |
24733 | { | |
36586728 | 24734 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24735 | int mid = low + (high - low) / 2; |
9a619af0 | 24736 | |
22b6cd70 | 24737 | mid_cu = all_comp_units[mid]; |
36586728 | 24738 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24739 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24740 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24741 | high = mid; |
24742 | else | |
24743 | low = mid + 1; | |
24744 | } | |
24745 | gdb_assert (low == high); | |
22b6cd70 TT |
24746 | return low; |
24747 | } | |
24748 | ||
24749 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24750 | the DIE at OFFSET. Raises an error on failure. */ | |
24751 | ||
24752 | static struct dwarf2_per_cu_data * | |
24753 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24754 | unsigned int offset_in_dwz, | |
976ca316 | 24755 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24756 | { |
976ca316 SM |
24757 | int low = dwarf2_find_containing_comp_unit |
24758 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24759 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24760 | |
45b8ae0c | 24761 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24762 | { |
36586728 | 24763 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24764 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24765 | "offset %s [in module %s]"), |
24766 | sect_offset_str (sect_off), | |
976ca316 | 24767 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24768 | |
976ca316 | 24769 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24770 | <= sect_off); |
976ca316 | 24771 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24772 | } |
24773 | else | |
24774 | { | |
976ca316 | 24775 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24776 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24777 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24778 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24779 | return this_cu; |
24780 | } | |
24781 | } | |
24782 | ||
22b6cd70 TT |
24783 | #if GDB_SELF_TEST |
24784 | ||
24785 | namespace selftests { | |
24786 | namespace find_containing_comp_unit { | |
24787 | ||
24788 | static void | |
24789 | run_test () | |
24790 | { | |
24791 | struct dwarf2_per_cu_data one {}; | |
24792 | struct dwarf2_per_cu_data two {}; | |
24793 | struct dwarf2_per_cu_data three {}; | |
24794 | struct dwarf2_per_cu_data four {}; | |
24795 | ||
24796 | one.length = 5; | |
24797 | two.sect_off = sect_offset (one.length); | |
24798 | two.length = 7; | |
24799 | ||
24800 | three.length = 5; | |
24801 | three.is_dwz = 1; | |
24802 | four.sect_off = sect_offset (three.length); | |
24803 | four.length = 7; | |
24804 | four.is_dwz = 1; | |
24805 | ||
24806 | std::vector<dwarf2_per_cu_data *> units; | |
24807 | units.push_back (&one); | |
24808 | units.push_back (&two); | |
24809 | units.push_back (&three); | |
24810 | units.push_back (&four); | |
24811 | ||
24812 | int result; | |
24813 | ||
24814 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24815 | SELF_CHECK (units[result] == &one); | |
24816 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24817 | SELF_CHECK (units[result] == &one); | |
24818 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24819 | SELF_CHECK (units[result] == &two); | |
24820 | ||
24821 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24822 | SELF_CHECK (units[result] == &three); | |
24823 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24824 | SELF_CHECK (units[result] == &three); | |
24825 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24826 | SELF_CHECK (units[result] == &four); | |
24827 | } | |
24828 | ||
24829 | } | |
24830 | } | |
24831 | ||
24832 | #endif /* GDB_SELF_TEST */ | |
24833 | ||
9e021579 | 24834 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24835 | |
9e021579 SM |
24836 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24837 | dwarf2_per_objfile *per_objfile) | |
24838 | : per_cu (per_cu), | |
24839 | per_objfile (per_objfile), | |
9068261f AB |
24840 | mark (false), |
24841 | has_loclist (false), | |
24842 | checked_producer (false), | |
24843 | producer_is_gxx_lt_4_6 (false), | |
24844 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24845 | producer_is_icc (false), |
9068261f | 24846 | producer_is_icc_lt_14 (false), |
c258c396 | 24847 | producer_is_codewarrior (false), |
9068261f | 24848 | processing_has_namespace_info (false) |
93311388 | 24849 | { |
9816fde3 JK |
24850 | } |
24851 | ||
24852 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24853 | ||
24854 | static void | |
95554aad TT |
24855 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24856 | enum language pretend_language) | |
9816fde3 JK |
24857 | { |
24858 | struct attribute *attr; | |
24859 | ||
24860 | /* Set the language we're debugging. */ | |
24861 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24862 | if (attr != nullptr) |
529908cb | 24863 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 24864 | else |
9cded63f | 24865 | { |
95554aad | 24866 | cu->language = pretend_language; |
9cded63f TT |
24867 | cu->language_defn = language_def (cu->language); |
24868 | } | |
dee91e82 | 24869 | |
7d45c7c3 | 24870 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24871 | } |
24872 | ||
7188ed02 | 24873 | /* See read.h. */ |
ae038cb0 | 24874 | |
7188ed02 SM |
24875 | dwarf2_cu * |
24876 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24877 | { |
7188ed02 SM |
24878 | auto it = m_dwarf2_cus.find (per_cu); |
24879 | if (it == m_dwarf2_cus.end ()) | |
24880 | return nullptr; | |
ae038cb0 | 24881 | |
7188ed02 SM |
24882 | return it->second; |
24883 | } | |
24884 | ||
24885 | /* See read.h. */ | |
24886 | ||
24887 | void | |
24888 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24889 | { | |
24890 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24891 | ||
24892 | m_dwarf2_cus[per_cu] = cu; | |
24893 | } | |
24894 | ||
24895 | /* See read.h. */ | |
24896 | ||
24897 | void | |
24898 | dwarf2_per_objfile::age_comp_units () | |
24899 | { | |
17e593e9 SM |
24900 | dwarf_read_debug_printf_v ("running"); |
24901 | ||
08ac5771 SM |
24902 | /* This is not expected to be called in the middle of CU expansion. There is |
24903 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
24904 | loaded in memory. Calling age_comp_units while the queue is in use could | |
24905 | make us free the DIEs for a CU that is in the queue and therefore break | |
24906 | that invariant. */ | |
24907 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
24908 | ||
7188ed02 SM |
24909 | /* Start by clearing all marks. */ |
24910 | for (auto pair : m_dwarf2_cus) | |
24911 | pair.second->mark = false; | |
24912 | ||
24913 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24914 | enough. */ | |
24915 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24916 | { |
7188ed02 SM |
24917 | dwarf2_cu *cu = pair.second; |
24918 | ||
24919 | cu->last_used++; | |
24920 | if (cu->last_used <= dwarf_max_cache_age) | |
24921 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24922 | } |
24923 | ||
7188ed02 SM |
24924 | /* Delete all CUs still not marked. */ |
24925 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24926 | { |
7188ed02 | 24927 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24928 | |
7188ed02 | 24929 | if (!cu->mark) |
ae038cb0 | 24930 | { |
17e593e9 SM |
24931 | dwarf_read_debug_printf_v ("deleting old CU %s", |
24932 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
24933 | delete cu; |
24934 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24935 | } |
24936 | else | |
7188ed02 | 24937 | it++; |
ae038cb0 DJ |
24938 | } |
24939 | } | |
24940 | ||
7188ed02 | 24941 | /* See read.h. */ |
ae038cb0 | 24942 | |
7188ed02 SM |
24943 | void |
24944 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24945 | { |
7188ed02 SM |
24946 | auto it = m_dwarf2_cus.find (per_cu); |
24947 | if (it == m_dwarf2_cus.end ()) | |
24948 | return; | |
ae038cb0 | 24949 | |
7188ed02 | 24950 | delete it->second; |
ae038cb0 | 24951 | |
7188ed02 SM |
24952 | m_dwarf2_cus.erase (it); |
24953 | } | |
ae038cb0 | 24954 | |
7188ed02 SM |
24955 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24956 | { | |
24957 | remove_all_cus (); | |
ae038cb0 DJ |
24958 | } |
24959 | ||
dee91e82 DE |
24960 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24961 | We store these in a hash table separate from the DIEs, and preserve them | |
24962 | when the DIEs are flushed out of cache. | |
24963 | ||
24964 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24965 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24966 | or the type may come from a DWO file. Furthermore, while it's more logical |
24967 | to use per_cu->section+offset, with Fission the section with the data is in | |
24968 | the DWO file but we don't know that section at the point we need it. | |
24969 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24970 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24971 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24972 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24973 | |
dee91e82 | 24974 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24975 | { |
dee91e82 | 24976 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24977 | sect_offset sect_off; |
1c379e20 DJ |
24978 | struct type *type; |
24979 | }; | |
24980 | ||
dee91e82 | 24981 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24982 | |
24983 | static hashval_t | |
dee91e82 | 24984 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24985 | { |
9a3c8263 SM |
24986 | const struct dwarf2_per_cu_offset_and_type *ofs |
24987 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24988 | |
9c541725 | 24989 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24990 | } |
24991 | ||
dee91e82 | 24992 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24993 | |
24994 | static int | |
dee91e82 | 24995 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24996 | { |
9a3c8263 SM |
24997 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24998 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24999 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25000 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25001 | |
dee91e82 | 25002 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25003 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25004 | } |
25005 | ||
25006 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25007 | table if necessary. For convenience, return TYPE. |
25008 | ||
25009 | The DIEs reading must have careful ordering to: | |
85102364 | 25010 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25011 | reading current DIE. |
25012 | * Not trying to dereference contents of still incompletely read in types | |
25013 | while reading in other DIEs. | |
25014 | * Enable referencing still incompletely read in types just by a pointer to | |
25015 | the type without accessing its fields. | |
25016 | ||
25017 | Therefore caller should follow these rules: | |
25018 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25019 | before building the type and calling set_die_type. | |
e71ec853 | 25020 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25021 | possible before fetching more types to complete the current type. |
25022 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25023 | |
f792889a | 25024 | static struct type * |
57567375 TT |
25025 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25026 | bool skip_data_location) | |
1c379e20 | 25027 | { |
976ca316 | 25028 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25029 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25030 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25031 | struct attribute *attr; |
25032 | struct dynamic_prop prop; | |
1c379e20 | 25033 | |
b4ba55a1 JB |
25034 | /* For Ada types, make sure that the gnat-specific data is always |
25035 | initialized (if not already set). There are a few types where | |
25036 | we should not be doing so, because the type-specific area is | |
25037 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25038 | where the type-specific area is used to store the floatformat). | |
25039 | But this is not a problem, because the gnat-specific information | |
25040 | is actually not needed for these types. */ | |
25041 | if (need_gnat_info (cu) | |
78134374 SM |
25042 | && type->code () != TYPE_CODE_FUNC |
25043 | && type->code () != TYPE_CODE_FLT | |
25044 | && type->code () != TYPE_CODE_METHODPTR | |
25045 | && type->code () != TYPE_CODE_MEMBERPTR | |
25046 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25047 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25048 | && !HAVE_GNAT_AUX_INFO (type)) |
25049 | INIT_GNAT_SPECIFIC (type); | |
25050 | ||
3f2f83dd KB |
25051 | /* Read DW_AT_allocated and set in type. */ |
25052 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25053 | if (attr != NULL) |
3f2f83dd | 25054 | { |
293e7e51 | 25055 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25056 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25057 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25058 | } |
3f2f83dd KB |
25059 | |
25060 | /* Read DW_AT_associated and set in type. */ | |
25061 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25062 | if (attr != NULL) |
3f2f83dd | 25063 | { |
293e7e51 | 25064 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25065 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25066 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25067 | } |
3f2f83dd | 25068 | |
3cdcd0ce | 25069 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25070 | if (!skip_data_location) |
25071 | { | |
25072 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25073 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25074 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25075 | } | |
3cdcd0ce | 25076 | |
976ca316 SM |
25077 | if (per_objfile->die_type_hash == NULL) |
25078 | per_objfile->die_type_hash | |
0335378b TT |
25079 | = htab_up (htab_create_alloc (127, |
25080 | per_cu_offset_and_type_hash, | |
25081 | per_cu_offset_and_type_eq, | |
25082 | NULL, xcalloc, xfree)); | |
1c379e20 | 25083 | |
dee91e82 | 25084 | ofs.per_cu = cu->per_cu; |
9c541725 | 25085 | ofs.sect_off = die->sect_off; |
1c379e20 | 25086 | ofs.type = type; |
dee91e82 | 25087 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25088 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25089 | if (*slot) |
b98664d3 | 25090 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25091 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25092 | *slot = XOBNEW (&objfile->objfile_obstack, |
25093 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25094 | **slot = ofs; |
f792889a | 25095 | return type; |
1c379e20 DJ |
25096 | } |
25097 | ||
9c541725 | 25098 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25099 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25100 | |
25101 | static struct type * | |
9c541725 | 25102 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25103 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25104 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25105 | { |
dee91e82 | 25106 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25107 | |
976ca316 | 25108 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25109 | return NULL; |
1c379e20 | 25110 | |
dee91e82 | 25111 | ofs.per_cu = per_cu; |
9c541725 | 25112 | ofs.sect_off = sect_off; |
9a3c8263 | 25113 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25114 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25115 | if (slot) |
25116 | return slot->type; | |
25117 | else | |
25118 | return NULL; | |
25119 | } | |
25120 | ||
02142a6c | 25121 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25122 | or return NULL if DIE does not have a saved type. */ |
25123 | ||
25124 | static struct type * | |
25125 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25126 | { | |
aa66c379 | 25127 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25128 | } |
25129 | ||
10b3939b DJ |
25130 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25131 | ||
25132 | static void | |
25133 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25134 | struct dwarf2_per_cu_data *ref_per_cu) | |
25135 | { | |
25136 | void **slot; | |
25137 | ||
25138 | if (cu->dependencies == NULL) | |
25139 | cu->dependencies | |
25140 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25141 | NULL, &cu->comp_unit_obstack, | |
25142 | hashtab_obstack_allocate, | |
25143 | dummy_obstack_deallocate); | |
25144 | ||
25145 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25146 | if (*slot == NULL) | |
25147 | *slot = ref_per_cu; | |
25148 | } | |
1c379e20 | 25149 | |
f504f079 DE |
25150 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25151 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25152 | cache that we must keep because we are keeping CU. |
25153 | ||
25154 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25155 | |
10b3939b DJ |
25156 | static int |
25157 | dwarf2_mark_helper (void **slot, void *data) | |
25158 | { | |
7188ed02 SM |
25159 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25160 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25161 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25162 | |
25163 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25164 | reading of the chain. As such dependencies remain valid it is not much | |
25165 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25166 | if (cu == nullptr) |
d07ed419 JK |
25167 | return 1; |
25168 | ||
7188ed02 | 25169 | if (cu->mark) |
10b3939b | 25170 | return 1; |
10b3939b | 25171 | |
7188ed02 SM |
25172 | cu->mark = true; |
25173 | ||
25174 | if (cu->dependencies != nullptr) | |
25175 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25176 | |
25177 | return 1; | |
25178 | } | |
25179 | ||
f504f079 DE |
25180 | /* Set the mark field in CU and in every other compilation unit in the |
25181 | cache that we must keep because we are keeping CU. */ | |
25182 | ||
ae038cb0 DJ |
25183 | static void |
25184 | dwarf2_mark (struct dwarf2_cu *cu) | |
25185 | { | |
25186 | if (cu->mark) | |
25187 | return; | |
7188ed02 | 25188 | |
9068261f | 25189 | cu->mark = true; |
ae038cb0 | 25190 | |
7188ed02 SM |
25191 | if (cu->dependencies != nullptr) |
25192 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25193 | } |
25194 | ||
72bf9492 DJ |
25195 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25196 | is its offset in .debug_info for this objfile. */ | |
25197 | ||
25198 | static hashval_t | |
25199 | partial_die_hash (const void *item) | |
25200 | { | |
9a3c8263 SM |
25201 | const struct partial_die_info *part_die |
25202 | = (const struct partial_die_info *) item; | |
9a619af0 | 25203 | |
9c541725 | 25204 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25205 | } |
25206 | ||
25207 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25208 | are equal if they have the same offset. */ | |
25209 | ||
25210 | static int | |
25211 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25212 | { | |
9a3c8263 SM |
25213 | const struct partial_die_info *part_die_lhs |
25214 | = (const struct partial_die_info *) item_lhs; | |
25215 | const struct partial_die_info *part_die_rhs | |
25216 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25217 | |
9c541725 | 25218 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25219 | } |
25220 | ||
3c3bb058 AB |
25221 | struct cmd_list_element *set_dwarf_cmdlist; |
25222 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25223 | |
9291a0cd | 25224 | static void |
cd4fb1b2 SM |
25225 | show_check_physname (struct ui_file *file, int from_tty, |
25226 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25227 | { |
cd4fb1b2 SM |
25228 | fprintf_filtered (file, |
25229 | _("Whether to check \"physname\" is %s.\n"), | |
25230 | value); | |
9291a0cd TT |
25231 | } |
25232 | ||
6c265988 | 25233 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25234 | void |
6c265988 | 25235 | _initialize_dwarf2_read () |
9291a0cd | 25236 | { |
0743fc83 | 25237 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25238 | Set DWARF specific variables.\n\ |
590042fc | 25239 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25240 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25241 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25242 | |
0743fc83 | 25243 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25244 | Show DWARF specific variables.\n\ |
25245 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25246 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25247 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25248 | |
cd4fb1b2 SM |
25249 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25250 | &dwarf_max_cache_age, _("\ | |
25251 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25252 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25253 | A higher limit means that cached compilation units will be stored\n\ | |
25254 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25255 | caching, which can slow down startup."), | |
25256 | NULL, | |
25257 | show_dwarf_max_cache_age, | |
25258 | &set_dwarf_cmdlist, | |
25259 | &show_dwarf_cmdlist); | |
156942c7 | 25260 | |
cd4fb1b2 SM |
25261 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25262 | Set debugging of the DWARF reader."), _("\ | |
25263 | Show debugging of the DWARF reader."), _("\ | |
25264 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25265 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25266 | information. A value greater than 1 provides more verbose information."), | |
25267 | NULL, | |
25268 | NULL, | |
25269 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25270 | |
cd4fb1b2 SM |
25271 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25272 | Set debugging of the DWARF DIE reader."), _("\ | |
25273 | Show debugging of the DWARF DIE reader."), _("\ | |
25274 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25275 | The value is the maximum depth to print."), | |
25276 | NULL, | |
25277 | NULL, | |
25278 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25279 | |
cd4fb1b2 SM |
25280 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25281 | Set debugging of the dwarf line reader."), _("\ | |
25282 | Show debugging of the dwarf line reader."), _("\ | |
25283 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25284 | A value of 1 (one) provides basic information.\n\ | |
25285 | A value greater than 1 provides more verbose information."), | |
25286 | NULL, | |
25287 | NULL, | |
25288 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25289 | |
cd4fb1b2 SM |
25290 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25291 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25292 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25293 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25294 | the demangler."), | |
25295 | NULL, show_check_physname, | |
25296 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25297 | |
e615022a DE |
25298 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25299 | no_class, &use_deprecated_index_sections, _("\ | |
25300 | Set whether to use deprecated gdb_index sections."), _("\ | |
25301 | Show whether to use deprecated gdb_index sections."), _("\ | |
25302 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25303 | Normally they are ignored either because of a missing feature or\n\ | |
25304 | performance issue.\n\ | |
25305 | Warning: This option must be enabled before gdb reads the file."), | |
25306 | NULL, | |
25307 | NULL, | |
25308 | &setlist, &showlist); | |
25309 | ||
f1e6e072 TT |
25310 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25311 | &dwarf2_locexpr_funcs); | |
25312 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25313 | &dwarf2_loclist_funcs); | |
25314 | ||
25315 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25316 | &dwarf2_block_frame_base_locexpr_funcs); | |
25317 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25318 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25319 | |
25320 | #if GDB_SELF_TEST | |
25321 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25322 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25323 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25324 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25325 | #endif |
6502dd73 | 25326 | } |