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" |
9fc29955 | 91 | #include <unordered_set> |
437afbb8 | 92 | |
73be47f5 DE |
93 | /* When == 1, print basic high level tracing messages. |
94 | When > 1, be more verbose. | |
b4f54984 DE |
95 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
96 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 97 | |
6f738b01 SM |
98 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
99 | ||
100 | #define dwarf_read_debug_printf(fmt, ...) \ | |
74b773fc SM |
101 | debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \ |
102 | ##__VA_ARGS__) | |
6f738b01 SM |
103 | |
104 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
105 | ||
106 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
74b773fc SM |
107 | debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \ |
108 | ##__VA_ARGS__) | |
6f738b01 | 109 | |
d97bc12b | 110 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 111 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 112 | |
27e0867f | 113 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 114 | unsigned int dwarf_line_debug = 0; |
27e0867f | 115 | |
491144b5 CB |
116 | /* When true, cross-check physname against demangler. */ |
117 | static bool check_physname = false; | |
900e11f9 | 118 | |
491144b5 CB |
119 | /* When true, do not reject deprecated .gdb_index sections. */ |
120 | static bool use_deprecated_index_sections = false; | |
481860b3 | 121 | |
17ee85fc TT |
122 | /* This is used to store the data that is always per objfile. */ |
123 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
124 | ||
125 | /* These are used to store the dwarf2_per_bfd objects. | |
126 | ||
127 | objfiles having the same BFD, which doesn't require relocations, are going to | |
128 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
129 | ||
130 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
131 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
132 | version. */ | |
133 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
134 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 135 | |
f1e6e072 TT |
136 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
137 | ||
138 | static int dwarf2_locexpr_index; | |
139 | static int dwarf2_loclist_index; | |
140 | static int dwarf2_locexpr_block_index; | |
141 | static int dwarf2_loclist_block_index; | |
142 | ||
41144253 | 143 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
144 | #define LOCLIST_HEADER_SIZE32 12 | |
145 | ||
146 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
147 | #define LOCLIST_HEADER_SIZE64 20 | |
148 | ||
d0ce17d8 CT |
149 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
150 | #define RNGLIST_HEADER_SIZE32 12 | |
151 | ||
152 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
153 | #define RNGLIST_HEADER_SIZE64 20 | |
154 | ||
3f563c84 PA |
155 | /* An index into a (C++) symbol name component in a symbol name as |
156 | recorded in the mapped_index's symbol table. For each C++ symbol | |
157 | in the symbol table, we record one entry for the start of each | |
158 | component in the symbol in a table of name components, and then | |
159 | sort the table, in order to be able to binary search symbol names, | |
160 | ignoring leading namespaces, both completion and regular look up. | |
161 | For example, for symbol "A::B::C", we'll have an entry that points | |
162 | to "A::B::C", another that points to "B::C", and another for "C". | |
163 | Note that function symbols in GDB index have no parameter | |
164 | information, just the function/method names. You can convert a | |
165 | name_component to a "const char *" using the | |
166 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
167 | ||
168 | struct name_component | |
169 | { | |
170 | /* Offset in the symbol name where the component starts. Stored as | |
171 | a (32-bit) offset instead of a pointer to save memory and improve | |
172 | locality on 64-bit architectures. */ | |
173 | offset_type name_offset; | |
174 | ||
175 | /* The symbol's index in the symbol and constant pool tables of a | |
176 | mapped_index. */ | |
177 | offset_type idx; | |
178 | }; | |
179 | ||
44ed8f3e PA |
180 | /* Base class containing bits shared by both .gdb_index and |
181 | .debug_name indexes. */ | |
182 | ||
183 | struct mapped_index_base | |
184 | { | |
22ca247e TT |
185 | mapped_index_base () = default; |
186 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
187 | ||
44ed8f3e PA |
188 | /* The name_component table (a sorted vector). See name_component's |
189 | description above. */ | |
190 | std::vector<name_component> name_components; | |
191 | ||
192 | /* How NAME_COMPONENTS is sorted. */ | |
193 | enum case_sensitivity name_components_casing; | |
194 | ||
195 | /* Return the number of names in the symbol table. */ | |
196 | virtual size_t symbol_name_count () const = 0; | |
197 | ||
198 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
199 | virtual const char *symbol_name_at |
200 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
201 | |
202 | /* Return whether the name at IDX in the symbol table should be | |
203 | ignored. */ | |
204 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
205 | { | |
206 | return false; | |
207 | } | |
208 | ||
209 | /* Build the symbol name component sorted vector, if we haven't | |
210 | yet. */ | |
fcf23d5b | 211 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
212 | |
213 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
214 | possible matches for LN_NO_PARAMS in the name component | |
215 | vector. */ | |
216 | std::pair<std::vector<name_component>::const_iterator, | |
217 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 218 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
219 | enum language lang, |
220 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
221 | |
222 | /* Prevent deleting/destroying via a base class pointer. */ | |
223 | protected: | |
224 | ~mapped_index_base() = default; | |
225 | }; | |
226 | ||
42c2c694 TT |
227 | /* This is a view into the index that converts from bytes to an |
228 | offset_type, and allows indexing. Unaligned bytes are specifically | |
229 | allowed here, and handled via unpacking. */ | |
230 | ||
231 | class offset_view | |
232 | { | |
233 | public: | |
234 | offset_view () = default; | |
235 | ||
236 | explicit offset_view (gdb::array_view<const gdb_byte> bytes) | |
237 | : m_bytes (bytes) | |
238 | { | |
239 | } | |
240 | ||
241 | /* Extract the INDEXth offset_type from the array. */ | |
242 | offset_type operator[] (size_t index) const | |
243 | { | |
244 | const gdb_byte *bytes = &m_bytes[index * sizeof (offset_type)]; | |
245 | return (offset_type) extract_unsigned_integer (bytes, | |
246 | sizeof (offset_type), | |
247 | BFD_ENDIAN_LITTLE); | |
248 | } | |
249 | ||
250 | /* Return the number of offset_types in this array. */ | |
251 | size_t size () const | |
252 | { | |
253 | return m_bytes.size () / sizeof (offset_type); | |
254 | } | |
255 | ||
256 | /* Return true if this view is empty. */ | |
257 | bool empty () const | |
258 | { | |
259 | return m_bytes.empty (); | |
260 | } | |
261 | ||
262 | private: | |
263 | /* The underlying bytes. */ | |
264 | gdb::array_view<const gdb_byte> m_bytes; | |
265 | }; | |
266 | ||
9291a0cd TT |
267 | /* A description of the mapped index. The file format is described in |
268 | a comment by the code that writes the index. */ | |
fc898b42 | 269 | struct mapped_index final : public mapped_index_base |
9291a0cd | 270 | { |
559a7a62 | 271 | /* Index data format version. */ |
3063847f | 272 | int version = 0; |
559a7a62 | 273 | |
f00a2de2 PA |
274 | /* The address table data. */ |
275 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 276 | |
3876f04e | 277 | /* The symbol table, implemented as a hash table. */ |
42c2c694 | 278 | offset_view symbol_table; |
b11b1f88 | 279 | |
9291a0cd | 280 | /* A pointer to the constant pool. */ |
42c2c694 TT |
281 | gdb::array_view<const gdb_byte> constant_pool; |
282 | ||
283 | /* Return the index into the constant pool of the name of the IDXth | |
284 | symbol in the symbol table. */ | |
285 | offset_type symbol_name_index (offset_type idx) const | |
286 | { | |
287 | return symbol_table[2 * idx]; | |
288 | } | |
289 | ||
290 | /* Return the index into the constant pool of the CU vector of the | |
291 | IDXth symbol in the symbol table. */ | |
292 | offset_type symbol_vec_index (offset_type idx) const | |
293 | { | |
294 | return symbol_table[2 * idx + 1]; | |
295 | } | |
3f563c84 | 296 | |
44ed8f3e PA |
297 | bool symbol_name_slot_invalid (offset_type idx) const override |
298 | { | |
42c2c694 TT |
299 | return (symbol_name_index (idx) == 0 |
300 | && symbol_vec_index (idx) == 0); | |
44ed8f3e | 301 | } |
5c58de74 | 302 | |
3f563c84 PA |
303 | /* Convenience method to get at the name of the symbol at IDX in the |
304 | symbol table. */ | |
fcf23d5b SM |
305 | const char *symbol_name_at |
306 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
42c2c694 TT |
307 | { |
308 | return (const char *) (this->constant_pool.data () | |
309 | + symbol_name_index (idx)); | |
310 | } | |
5c58de74 | 311 | |
44ed8f3e | 312 | size_t symbol_name_count () const override |
42c2c694 | 313 | { return this->symbol_table.size () / 2; } |
9291a0cd TT |
314 | }; |
315 | ||
927aa2e7 JK |
316 | /* A description of the mapped .debug_names. |
317 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 318 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
319 | { |
320 | bfd_endian dwarf5_byte_order; | |
321 | bool dwarf5_is_dwarf64; | |
322 | bool augmentation_is_gdb; | |
323 | uint8_t offset_size; | |
324 | uint32_t cu_count = 0; | |
325 | uint32_t tu_count, bucket_count, name_count; | |
326 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
327 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
328 | const gdb_byte *name_table_string_offs_reordered; | |
329 | const gdb_byte *name_table_entry_offs_reordered; | |
330 | const gdb_byte *entry_pool; | |
331 | ||
332 | struct index_val | |
333 | { | |
334 | ULONGEST dwarf_tag; | |
335 | struct attr | |
336 | { | |
337 | /* Attribute name DW_IDX_*. */ | |
338 | ULONGEST dw_idx; | |
339 | ||
340 | /* Attribute form DW_FORM_*. */ | |
341 | ULONGEST form; | |
342 | ||
343 | /* Value if FORM is DW_FORM_implicit_const. */ | |
344 | LONGEST implicit_const; | |
345 | }; | |
346 | std::vector<attr> attr_vec; | |
347 | }; | |
348 | ||
349 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
350 | ||
fcf23d5b SM |
351 | const char *namei_to_name |
352 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
353 | |
354 | /* Implementation of the mapped_index_base virtual interface, for | |
355 | the name_components cache. */ | |
356 | ||
fcf23d5b SM |
357 | const char *symbol_name_at |
358 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
359 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
360 | |
361 | size_t symbol_name_count () const override | |
362 | { return this->name_count; } | |
927aa2e7 JK |
363 | }; |
364 | ||
cd4fb1b2 | 365 | /* See dwarf2read.h. */ |
ed2dc618 | 366 | |
cd4fb1b2 | 367 | dwarf2_per_objfile * |
ed2dc618 SM |
368 | get_dwarf2_per_objfile (struct objfile *objfile) |
369 | { | |
5bfd760d | 370 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 371 | } |
c906108c | 372 | |
251d32d9 | 373 | /* Default names of the debugging sections. */ |
c906108c | 374 | |
233a11ab CS |
375 | /* Note that if the debugging section has been compressed, it might |
376 | have a name like .zdebug_info. */ | |
377 | ||
9938d15a | 378 | const struct dwarf2_debug_sections dwarf2_elf_names = |
9cdd5dbd | 379 | { |
251d32d9 TG |
380 | { ".debug_info", ".zdebug_info" }, |
381 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
382 | { ".debug_line", ".zdebug_line" }, | |
383 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 384 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 385 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 386 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 387 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 388 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 389 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 390 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 391 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 392 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 393 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
394 | { ".debug_frame", ".zdebug_frame" }, |
395 | { ".eh_frame", NULL }, | |
24d3216f | 396 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
397 | { ".debug_names", ".zdebug_names" }, |
398 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 399 | 23 |
251d32d9 | 400 | }; |
c906108c | 401 | |
80626a55 | 402 | /* List of DWO/DWP sections. */ |
3019eac3 | 403 | |
80626a55 | 404 | static const struct dwop_section_names |
3019eac3 DE |
405 | { |
406 | struct dwarf2_section_names abbrev_dwo; | |
407 | struct dwarf2_section_names info_dwo; | |
408 | struct dwarf2_section_names line_dwo; | |
409 | struct dwarf2_section_names loc_dwo; | |
43988095 | 410 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
411 | struct dwarf2_section_names macinfo_dwo; |
412 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 413 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
414 | struct dwarf2_section_names str_dwo; |
415 | struct dwarf2_section_names str_offsets_dwo; | |
416 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
417 | struct dwarf2_section_names cu_index; |
418 | struct dwarf2_section_names tu_index; | |
3019eac3 | 419 | } |
80626a55 | 420 | dwop_section_names = |
3019eac3 DE |
421 | { |
422 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
423 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
424 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
425 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 426 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
427 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
428 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 429 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
430 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
431 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
432 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
433 | { ".debug_cu_index", ".zdebug_cu_index" }, |
434 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
435 | }; |
436 | ||
c906108c SS |
437 | /* local data types */ |
438 | ||
d0ce17d8 CT |
439 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
440 | begin with a header, which contains the following information. */ | |
441 | struct loclists_rnglists_header | |
41144253 | 442 | { |
443 | /* A 4-byte or 12-byte length containing the length of the | |
444 | set of entries for this compilation unit, not including the | |
445 | length field itself. */ | |
446 | unsigned int length; | |
447 | ||
448 | /* A 2-byte version identifier. */ | |
449 | short version; | |
450 | ||
451 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
452 | the target system. */ | |
453 | unsigned char addr_size; | |
454 | ||
455 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
456 | on the target system. */ | |
457 | unsigned char segment_collector_size; | |
458 | ||
459 | /* A 4-byte count of the number of offsets that follow the header. */ | |
460 | unsigned int offset_entry_count; | |
461 | }; | |
462 | ||
3da10d80 KS |
463 | /* Type used for delaying computation of method physnames. |
464 | See comments for compute_delayed_physnames. */ | |
465 | struct delayed_method_info | |
466 | { | |
467 | /* The type to which the method is attached, i.e., its parent class. */ | |
468 | struct type *type; | |
469 | ||
470 | /* The index of the method in the type's function fieldlists. */ | |
471 | int fnfield_index; | |
472 | ||
473 | /* The index of the method in the fieldlist. */ | |
474 | int index; | |
475 | ||
476 | /* The name of the DIE. */ | |
477 | const char *name; | |
478 | ||
479 | /* The DIE associated with this method. */ | |
480 | struct die_info *die; | |
481 | }; | |
482 | ||
e7c27a73 DJ |
483 | /* Internal state when decoding a particular compilation unit. */ |
484 | struct dwarf2_cu | |
485 | { | |
9e021579 SM |
486 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
487 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
488 | |
489 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
490 | ||
c24bdb02 KS |
491 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
492 | Create the set of symtabs used by this TU, or if this TU is sharing | |
493 | symtabs with another TU and the symtabs have already been created | |
494 | then restore those symtabs in the line header. | |
495 | We don't need the pc/line-number mapping for type units. */ | |
496 | void setup_type_unit_groups (struct die_info *die); | |
497 | ||
498 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
499 | buildsym_compunit constructor. */ | |
500 | struct compunit_symtab *start_symtab (const char *name, | |
501 | const char *comp_dir, | |
502 | CORE_ADDR low_pc); | |
503 | ||
504 | /* Reset the builder. */ | |
505 | void reset_builder () { m_builder.reset (); } | |
506 | ||
293e7e51 SM |
507 | /* Return a type that is a generic pointer type, the size of which |
508 | matches the address size given in the compilation unit header for | |
509 | this CU. */ | |
510 | struct type *addr_type () const; | |
511 | ||
512 | /* Find an integer type the same size as the address size given in | |
513 | the compilation unit header for this CU. UNSIGNED_P controls if | |
514 | the integer is unsigned or not. */ | |
515 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
516 | ||
d00adf39 | 517 | /* The header of the compilation unit. */ |
fcd3b13d | 518 | struct comp_unit_head header {}; |
e142c38c | 519 | |
d00adf39 | 520 | /* Base address of this compilation unit. */ |
2b24b6e4 | 521 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 522 | |
e142c38c | 523 | /* The language we are debugging. */ |
fcd3b13d SM |
524 | enum language language = language_unknown; |
525 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 526 | |
fcd3b13d | 527 | const char *producer = nullptr; |
b0f35d58 | 528 | |
c24bdb02 | 529 | private: |
804d2729 TT |
530 | /* The symtab builder for this CU. This is only non-NULL when full |
531 | symbols are being read. */ | |
c24bdb02 | 532 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 533 | |
c24bdb02 | 534 | public: |
e142c38c DJ |
535 | /* The generic symbol table building routines have separate lists for |
536 | file scope symbols and all all other scopes (local scopes). So | |
537 | we need to select the right one to pass to add_symbol_to_list(). | |
538 | We do it by keeping a pointer to the correct list in list_in_scope. | |
539 | ||
540 | FIXME: The original dwarf code just treated the file scope as the | |
541 | first local scope, and all other local scopes as nested local | |
542 | scopes, and worked fine. Check to see if we really need to | |
543 | distinguish these in buildsym.c. */ | |
fcd3b13d | 544 | struct pending **list_in_scope = nullptr; |
e142c38c | 545 | |
b64f50a1 JK |
546 | /* Hash table holding all the loaded partial DIEs |
547 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 548 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
549 | |
550 | /* Storage for things with the same lifetime as this read-in compilation | |
551 | unit, including partial DIEs. */ | |
fcd3b13d | 552 | auto_obstack comp_unit_obstack; |
72bf9492 | 553 | |
69d751e3 | 554 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
555 | struct dwarf2_per_cu_data *per_cu; |
556 | ||
9e021579 | 557 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 558 | dwarf2_per_objfile *per_objfile; |
9e021579 | 559 | |
ae038cb0 | 560 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 561 | int last_used = 0; |
ae038cb0 | 562 | |
b64f50a1 JK |
563 | /* A hash table of DIE cu_offset for following references with |
564 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 565 | htab_t die_hash = nullptr; |
10b3939b DJ |
566 | |
567 | /* Full DIEs if read in. */ | |
fcd3b13d | 568 | struct die_info *dies = nullptr; |
10b3939b DJ |
569 | |
570 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
571 | units referenced by this one. Only set during full symbol processing; | |
572 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 573 | htab_t dependencies = nullptr; |
10b3939b | 574 | |
cb1df416 | 575 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 576 | struct line_header *line_header = nullptr; |
4c8aa72d | 577 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 578 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
579 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
580 | to the line header as long as this DIE is being processed. See | |
581 | process_die_scope. */ | |
fcd3b13d | 582 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 583 | |
3da10d80 KS |
584 | /* A list of methods which need to have physnames computed |
585 | after all type information has been read. */ | |
c89b44cd | 586 | std::vector<delayed_method_info> method_list; |
3da10d80 | 587 | |
96408a79 | 588 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 589 | htab_t call_site_htab = nullptr; |
96408a79 | 590 | |
034e5797 DE |
591 | /* Non-NULL if this CU came from a DWO file. |
592 | There is an invariant here that is important to remember: | |
593 | Except for attributes copied from the top level DIE in the "main" | |
594 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 595 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
596 | Either there isn't a DWO file (in which case this is NULL and the point |
597 | is moot), or there is and either we're not going to read it (in which | |
598 | case this is NULL) or there is and we are reading it (in which case this | |
599 | is non-NULL). */ | |
fcd3b13d | 600 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 601 | |
18a8505e | 602 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 603 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 604 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 605 | |
2b0c7f41 SM |
606 | /* The DW_AT_GNU_ranges_base attribute, if present. |
607 | ||
608 | This is only relevant in the context of pre-DWARF 5 split units. In this | |
609 | context, there is a .debug_ranges section in the linked executable, | |
610 | containing all the ranges data for all the compilation units. Each | |
611 | skeleton/stub unit has (if needed) a DW_AT_GNU_ranges_base attribute that | |
612 | indicates the base of its contribution to that section. The DW_AT_ranges | |
613 | attributes in the split-unit are of the form DW_FORM_sec_offset and point | |
614 | into the .debug_ranges section of the linked file. However, they are not | |
615 | "true" DW_FORM_sec_offset, because they are relative to the base of their | |
616 | compilation unit's contribution, rather than relative to the beginning of | |
617 | the section. The DW_AT_GNU_ranges_base value must be added to it to make | |
618 | it relative to the beginning of the section. | |
619 | ||
620 | Note that the value is zero when we are not in a pre-DWARF 5 split-unit | |
621 | case, so this value can be added without needing to know whether we are in | |
622 | this case or not. | |
623 | ||
624 | N.B. If a DW_AT_ranges attribute is found on the DW_TAG_compile_unit in the | |
625 | skeleton/stub, it must not have the base added, as it already points to the | |
626 | right place. And since the DW_TAG_compile_unit DIE in the split-unit can't | |
627 | have a DW_AT_ranges attribute, we can use the | |
628 | ||
629 | die->tag != DW_AT_compile_unit | |
630 | ||
631 | to determine whether the base should be added or not. */ | |
632 | ULONGEST gnu_ranges_base = 0; | |
633 | ||
634 | /* The DW_AT_rnglists_base attribute, if present. | |
635 | ||
636 | This is used when processing attributes of form DW_FORM_rnglistx in | |
637 | non-split units. Attributes of this form found in a split unit don't | |
638 | use it, as split-unit files have their own non-shared .debug_rnglists.dwo | |
639 | section. */ | |
640 | ULONGEST rnglists_base = 0; | |
2e3cf129 | 641 | |
41144253 | 642 | /* The DW_AT_loclists_base attribute if present. */ |
643 | ULONGEST loclist_base = 0; | |
644 | ||
c9317f21 TT |
645 | /* When reading debug info generated by older versions of rustc, we |
646 | have to rewrite some union types to be struct types with a | |
647 | variant part. This rewriting must be done after the CU is fully | |
648 | read in, because otherwise at the point of rewriting some struct | |
649 | type might not have been fully processed. So, we keep a list of | |
650 | all such types here and process them after expansion. */ | |
651 | std::vector<struct type *> rust_unions; | |
652 | ||
18a8505e AT |
653 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
654 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
655 | value is often implicit and is the size of the header of | |
656 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
657 | gdb::optional<ULONGEST> str_offsets_base; | |
658 | ||
ae038cb0 | 659 | /* Mark used when releasing cached dies. */ |
9068261f | 660 | bool mark : 1; |
ae038cb0 | 661 | |
8be455d7 JK |
662 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
663 | This test is imperfect as there may exist optimized debug code not using | |
664 | any location list and still facing inlining issues if handled as | |
665 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 666 | bool has_loclist : 1; |
ba919b58 | 667 | |
9068261f | 668 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
669 | if all the producer_is_* fields are valid. This information is cached |
670 | because profiling CU expansion showed excessive time spent in | |
671 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
672 | bool checked_producer : 1; |
673 | bool producer_is_gxx_lt_4_6 : 1; | |
674 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 675 | bool producer_is_icc : 1; |
9068261f | 676 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 677 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 678 | |
9068261f | 679 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
680 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
681 | this information, but later versions do. */ | |
682 | ||
9068261f | 683 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
684 | |
685 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 | 686 | |
3db19b2d TV |
687 | /* If this CU was inherited by another CU (via specification, |
688 | abstract_origin, etc), this is the ancestor CU. */ | |
689 | dwarf2_cu *ancestor; | |
690 | ||
c24bdb02 KS |
691 | /* Get the buildsym_compunit for this CU. */ |
692 | buildsym_compunit *get_builder () | |
693 | { | |
694 | /* If this CU has a builder associated with it, use that. */ | |
695 | if (m_builder != nullptr) | |
696 | return m_builder.get (); | |
697 | ||
3db19b2d TV |
698 | /* Otherwise, search ancestors for a valid builder. */ |
699 | if (ancestor != nullptr) | |
700 | return ancestor->get_builder (); | |
701 | ||
c24bdb02 KS |
702 | return nullptr; |
703 | } | |
e7c27a73 DJ |
704 | }; |
705 | ||
094b34ac DE |
706 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
707 | This includes type_unit_group and quick_file_names. */ | |
708 | ||
709 | struct stmt_list_hash | |
710 | { | |
711 | /* The DWO unit this table is from or NULL if there is none. */ | |
712 | struct dwo_unit *dwo_unit; | |
713 | ||
714 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 715 | sect_offset line_sect_off; |
094b34ac DE |
716 | }; |
717 | ||
5989a64e | 718 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
719 | an object of this type. This contains elements of type unit groups |
720 | that can be shared across objfiles. The non-shareable parts are in | |
721 | type_unit_group_unshareable. */ | |
f4dc4d17 | 722 | |
0d305d5c | 723 | struct type_unit_group : public dwarf2_per_cu_data |
f4dc4d17 | 724 | { |
0186c6a7 DE |
725 | /* The TUs that share this DW_AT_stmt_list entry. |
726 | This is added to while parsing type units to build partial symtabs, | |
727 | and is deleted afterwards and not used again. */ | |
0d305d5c | 728 | std::vector<signatured_type *> *tus = nullptr; |
f4dc4d17 | 729 | |
094b34ac | 730 | /* The data used to construct the hash key. */ |
0d305d5c | 731 | struct stmt_list_hash hash {}; |
f4dc4d17 DE |
732 | }; |
733 | ||
73869dc2 | 734 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
735 | |
736 | struct dwo_sections | |
737 | { | |
738 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
739 | struct dwarf2_section_info line; |
740 | struct dwarf2_section_info loc; | |
43988095 | 741 | struct dwarf2_section_info loclists; |
09262596 DE |
742 | struct dwarf2_section_info macinfo; |
743 | struct dwarf2_section_info macro; | |
d0ce17d8 | 744 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
745 | struct dwarf2_section_info str; |
746 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
747 | /* In the case of a virtual DWO file, these two are unused. */ |
748 | struct dwarf2_section_info info; | |
fd5866f6 | 749 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
750 | }; |
751 | ||
c88ee1f0 | 752 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
753 | |
754 | struct dwo_unit | |
755 | { | |
756 | /* Backlink to the containing struct dwo_file. */ | |
757 | struct dwo_file *dwo_file; | |
758 | ||
759 | /* The "id" that distinguishes this CU/TU. | |
760 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
761 | Since signatures came first, we stick with it for consistency. */ | |
762 | ULONGEST signature; | |
763 | ||
764 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 765 | struct dwarf2_section_info *section; |
3019eac3 | 766 | |
9c541725 PA |
767 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
768 | sect_offset sect_off; | |
3019eac3 DE |
769 | unsigned int length; |
770 | ||
771 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
772 | cu_offset type_offset_in_tu; | |
773 | }; | |
774 | ||
73869dc2 DE |
775 | /* include/dwarf2.h defines the DWP section codes. |
776 | It defines a max value but it doesn't define a min value, which we | |
777 | use for error checking, so provide one. */ | |
778 | ||
779 | enum dwp_v2_section_ids | |
780 | { | |
781 | DW_SECT_MIN = 1 | |
782 | }; | |
783 | ||
80626a55 | 784 | /* Data for one DWO file. |
57d63ce2 DE |
785 | |
786 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
787 | appears in a DWP file). DWP files don't really have DWO files per se - | |
788 | comdat folding of types "loses" the DWO file they came from, and from | |
789 | a high level view DWP files appear to contain a mass of random types. | |
790 | However, to maintain consistency with the non-DWP case we pretend DWP | |
791 | files contain virtual DWO files, and we assign each TU with one virtual | |
792 | DWO file (generally based on the line and abbrev section offsets - | |
793 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
794 | |
795 | struct dwo_file | |
796 | { | |
51ac9db5 SM |
797 | dwo_file () = default; |
798 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
799 | ||
18a8505e | 800 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
801 | For virtual DWO files the name is constructed from the section offsets |
802 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
803 | from related CU+TUs. */ | |
51ac9db5 | 804 | const char *dwo_name = nullptr; |
0ac5b59e DE |
805 | |
806 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 807 | const char *comp_dir = nullptr; |
3019eac3 | 808 | |
80626a55 DE |
809 | /* The bfd, when the file is open. Otherwise this is NULL. |
810 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 811 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 812 | |
73869dc2 | 813 | /* The sections that make up this DWO file. |
d2854d8d | 814 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 815 | sections (for lack of a better name). */ |
51ac9db5 | 816 | struct dwo_sections sections {}; |
3019eac3 | 817 | |
33c5cd75 DB |
818 | /* The CUs in the file. |
819 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
820 | an extension to handle LLVM's Link Time Optimization output (where | |
821 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 822 | htab_up cus; |
3019eac3 DE |
823 | |
824 | /* Table of TUs in the file. | |
825 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 826 | htab_up tus; |
3019eac3 DE |
827 | }; |
828 | ||
80626a55 DE |
829 | /* These sections are what may appear in a DWP file. */ |
830 | ||
831 | struct dwp_sections | |
832 | { | |
d2854d8d | 833 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
834 | struct dwarf2_section_info str; |
835 | struct dwarf2_section_info cu_index; | |
836 | struct dwarf2_section_info tu_index; | |
73869dc2 | 837 | |
d2854d8d | 838 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
839 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
840 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
841 | In DWP version 2 or 5 there is at most one copy of all these sections, |
842 | each section being (effectively) comprised of the concatenation of all of | |
843 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
844 | To keep the code simple we treat each of these concatenated pieces as a |
845 | section itself (a virtual section?). */ | |
846 | struct dwarf2_section_info abbrev; | |
847 | struct dwarf2_section_info info; | |
848 | struct dwarf2_section_info line; | |
849 | struct dwarf2_section_info loc; | |
d2854d8d | 850 | struct dwarf2_section_info loclists; |
73869dc2 DE |
851 | struct dwarf2_section_info macinfo; |
852 | struct dwarf2_section_info macro; | |
d2854d8d | 853 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
854 | struct dwarf2_section_info str_offsets; |
855 | struct dwarf2_section_info types; | |
80626a55 DE |
856 | }; |
857 | ||
73869dc2 DE |
858 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
859 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 860 | |
73869dc2 | 861 | struct virtual_v1_dwo_sections |
80626a55 DE |
862 | { |
863 | struct dwarf2_section_info abbrev; | |
864 | struct dwarf2_section_info line; | |
865 | struct dwarf2_section_info loc; | |
866 | struct dwarf2_section_info macinfo; | |
867 | struct dwarf2_section_info macro; | |
868 | struct dwarf2_section_info str_offsets; | |
869 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 870 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
871 | struct dwarf2_section_info info_or_types; |
872 | }; | |
873 | ||
d2854d8d | 874 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
875 | In version 2, the sections of the DWO files are concatenated together |
876 | and stored in one section of that name. Thus each ELF section contains | |
877 | several "virtual" sections. */ | |
878 | ||
d2854d8d | 879 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
880 | { |
881 | bfd_size_type abbrev_offset; | |
882 | bfd_size_type abbrev_size; | |
883 | ||
884 | bfd_size_type line_offset; | |
885 | bfd_size_type line_size; | |
886 | ||
887 | bfd_size_type loc_offset; | |
888 | bfd_size_type loc_size; | |
889 | ||
d2854d8d CT |
890 | bfd_size_type loclists_offset; |
891 | bfd_size_type loclists_size; | |
892 | ||
73869dc2 DE |
893 | bfd_size_type macinfo_offset; |
894 | bfd_size_type macinfo_size; | |
895 | ||
896 | bfd_size_type macro_offset; | |
897 | bfd_size_type macro_size; | |
898 | ||
d2854d8d CT |
899 | bfd_size_type rnglists_offset; |
900 | bfd_size_type rnglists_size; | |
901 | ||
73869dc2 DE |
902 | bfd_size_type str_offsets_offset; |
903 | bfd_size_type str_offsets_size; | |
904 | ||
905 | /* Each DWP hash table entry records one CU or one TU. | |
906 | That is recorded here, and copied to dwo_unit.section. */ | |
907 | bfd_size_type info_or_types_offset; | |
908 | bfd_size_type info_or_types_size; | |
909 | }; | |
910 | ||
80626a55 DE |
911 | /* Contents of DWP hash tables. */ |
912 | ||
913 | struct dwp_hash_table | |
914 | { | |
73869dc2 | 915 | uint32_t version, nr_columns; |
80626a55 | 916 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
917 | const gdb_byte *hash_table, *unit_table; |
918 | union | |
919 | { | |
920 | struct | |
921 | { | |
922 | const gdb_byte *indices; | |
923 | } v1; | |
924 | struct | |
925 | { | |
926 | /* This is indexed by column number and gives the id of the section | |
927 | in that column. */ | |
928 | #define MAX_NR_V2_DWO_SECTIONS \ | |
929 | (1 /* .debug_info or .debug_types */ \ | |
930 | + 1 /* .debug_abbrev */ \ | |
931 | + 1 /* .debug_line */ \ | |
932 | + 1 /* .debug_loc */ \ | |
933 | + 1 /* .debug_str_offsets */ \ | |
934 | + 1 /* .debug_macro or .debug_macinfo */) | |
935 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
936 | const gdb_byte *offsets; | |
937 | const gdb_byte *sizes; | |
938 | } v2; | |
d2854d8d CT |
939 | struct |
940 | { | |
941 | /* This is indexed by column number and gives the id of the section | |
942 | in that column. */ | |
943 | #define MAX_NR_V5_DWO_SECTIONS \ | |
944 | (1 /* .debug_info */ \ | |
945 | + 1 /* .debug_abbrev */ \ | |
946 | + 1 /* .debug_line */ \ | |
947 | + 1 /* .debug_loclists */ \ | |
948 | + 1 /* .debug_str_offsets */ \ | |
949 | + 1 /* .debug_macro */ \ | |
950 | + 1 /* .debug_rnglists */) | |
951 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
952 | const gdb_byte *offsets; | |
953 | const gdb_byte *sizes; | |
954 | } v5; | |
73869dc2 | 955 | } section_pool; |
80626a55 DE |
956 | }; |
957 | ||
958 | /* Data for one DWP file. */ | |
959 | ||
960 | struct dwp_file | |
961 | { | |
400174b1 TT |
962 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
963 | : name (name_), | |
964 | dbfd (std::move (abfd)) | |
965 | { | |
966 | } | |
967 | ||
80626a55 DE |
968 | /* Name of the file. */ |
969 | const char *name; | |
970 | ||
73869dc2 | 971 | /* File format version. */ |
400174b1 | 972 | int version = 0; |
73869dc2 | 973 | |
93417882 | 974 | /* The bfd. */ |
400174b1 | 975 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
976 | |
977 | /* Section info for this file. */ | |
400174b1 | 978 | struct dwp_sections sections {}; |
80626a55 | 979 | |
57d63ce2 | 980 | /* Table of CUs in the file. */ |
400174b1 | 981 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
982 | |
983 | /* Table of TUs in the file. */ | |
400174b1 | 984 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 985 | |
19ac8c2e | 986 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
987 | htab_up loaded_cus; |
988 | htab_up loaded_tus; | |
80626a55 | 989 | |
73869dc2 DE |
990 | /* Table to map ELF section numbers to their sections. |
991 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
992 | unsigned int num_sections = 0; |
993 | asection **elf_sections = nullptr; | |
80626a55 DE |
994 | }; |
995 | ||
0963b4bd MS |
996 | /* Struct used to pass misc. parameters to read_die_and_children, et |
997 | al. which are used for both .debug_info and .debug_types dies. | |
998 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 999 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1000 | |
1001 | struct die_reader_specs | |
1002 | { | |
a32a8923 | 1003 | /* The bfd of die_section. */ |
0280fdcc | 1004 | bfd *abfd; |
93311388 DE |
1005 | |
1006 | /* The CU of the DIE we are parsing. */ | |
1007 | struct dwarf2_cu *cu; | |
1008 | ||
80626a55 | 1009 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1010 | struct dwo_file *dwo_file; |
1011 | ||
dee91e82 | 1012 | /* The section the die comes from. |
3019eac3 | 1013 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1014 | struct dwarf2_section_info *die_section; |
1015 | ||
1016 | /* die_section->buffer. */ | |
d521ce57 | 1017 | const gdb_byte *buffer; |
f664829e DE |
1018 | |
1019 | /* The end of the buffer. */ | |
1020 | const gdb_byte *buffer_end; | |
a2ce51a0 | 1021 | |
685af9cd TT |
1022 | /* The abbreviation table to use when reading the DIEs. */ |
1023 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1024 | }; |
1025 | ||
c0ab21c2 TT |
1026 | /* A subclass of die_reader_specs that holds storage and has complex |
1027 | constructor and destructor behavior. */ | |
1028 | ||
1029 | class cutu_reader : public die_reader_specs | |
1030 | { | |
1031 | public: | |
1032 | ||
ab432490 SM |
1033 | cutu_reader (dwarf2_per_cu_data *this_cu, |
1034 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 1035 | struct abbrev_table *abbrev_table, |
2e671100 | 1036 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
1037 | bool skip_partial); |
1038 | ||
1039 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 1040 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
1041 | struct dwarf2_cu *parent_cu = nullptr, |
1042 | struct dwo_file *dwo_file = nullptr); | |
1043 | ||
c0ab21c2 TT |
1044 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
1045 | ||
1046 | const gdb_byte *info_ptr = nullptr; | |
1047 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1048 | bool dummy_p = false; |
1049 | ||
6751ebae TT |
1050 | /* Release the new CU, putting it on the chain. This cannot be done |
1051 | for dummy CUs. */ | |
1052 | void keep (); | |
1053 | ||
c0ab21c2 | 1054 | private: |
9e021579 SM |
1055 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1056 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1057 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1058 | |
1059 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1060 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1061 | ||
1062 | /* The ordinary abbreviation table. */ | |
1063 | abbrev_table_up m_abbrev_table_holder; | |
1064 | ||
1065 | /* The DWO abbreviation table. */ | |
1066 | abbrev_table_up m_dwo_abbrev_table; | |
1067 | }; | |
dee91e82 | 1068 | |
c906108c | 1069 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1070 | need this much information. */ |
6f06d47b | 1071 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1072 | { |
7c32eebb | 1073 | partial_die_info (sect_offset sect_off, const struct abbrev_info *abbrev); |
6f06d47b YQ |
1074 | |
1075 | /* Disable assign but still keep copy ctor, which is needed | |
1076 | load_partial_dies. */ | |
1077 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1078 | ||
52356b79 YQ |
1079 | /* Adjust the partial die before generating a symbol for it. This |
1080 | function may set the is_external flag or change the DIE's | |
1081 | name. */ | |
1082 | void fixup (struct dwarf2_cu *cu); | |
1083 | ||
48fbe735 YQ |
1084 | /* Read a minimal amount of information into the minimal die |
1085 | structure. */ | |
1086 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1087 | const struct abbrev_info &abbrev, | |
1088 | const gdb_byte *info_ptr); | |
1089 | ||
7d00ffec TT |
1090 | /* Compute the name of this partial DIE. This memoizes the |
1091 | result, so it is safe to call multiple times. */ | |
1092 | const char *name (dwarf2_cu *cu); | |
1093 | ||
72bf9492 | 1094 | /* Offset of this DIE. */ |
6f06d47b | 1095 | const sect_offset sect_off; |
72bf9492 DJ |
1096 | |
1097 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1098 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1099 | |
72bf9492 | 1100 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1101 | const unsigned int has_children : 1; |
1102 | ||
72bf9492 DJ |
1103 | unsigned int is_external : 1; |
1104 | unsigned int is_declaration : 1; | |
1105 | unsigned int has_type : 1; | |
1106 | unsigned int has_specification : 1; | |
1107 | unsigned int has_pc_info : 1; | |
481860b3 | 1108 | unsigned int may_be_inlined : 1; |
72bf9492 | 1109 | |
0c1b455e TT |
1110 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1111 | unsigned int main_subprogram : 1; | |
1112 | ||
72bf9492 DJ |
1113 | /* Flag set if the SCOPE field of this structure has been |
1114 | computed. */ | |
1115 | unsigned int scope_set : 1; | |
1116 | ||
fa4028e9 JB |
1117 | /* Flag set if the DIE has a byte_size attribute. */ |
1118 | unsigned int has_byte_size : 1; | |
1119 | ||
ff908ebf AW |
1120 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1121 | unsigned int has_const_value : 1; | |
1122 | ||
98bfdba5 PA |
1123 | /* Flag set if any of the DIE's children are template arguments. */ |
1124 | unsigned int has_template_arguments : 1; | |
1125 | ||
52356b79 | 1126 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1127 | unsigned int fixup_called : 1; |
1128 | ||
36586728 TT |
1129 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1130 | unsigned int is_dwz : 1; | |
1131 | ||
1132 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1133 | unsigned int spec_is_dwz : 1; | |
1134 | ||
7d00ffec TT |
1135 | unsigned int canonical_name : 1; |
1136 | ||
72bf9492 | 1137 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1138 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1139 | const char *raw_name = nullptr; |
72bf9492 | 1140 | |
abc72ce4 | 1141 | /* The linkage name, if present. */ |
6f06d47b | 1142 | const char *linkage_name = nullptr; |
abc72ce4 | 1143 | |
72bf9492 DJ |
1144 | /* The scope to prepend to our children. This is generally |
1145 | allocated on the comp_unit_obstack, so will disappear | |
1146 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1147 | const char *scope = nullptr; |
72bf9492 | 1148 | |
95554aad TT |
1149 | /* Some data associated with the partial DIE. The tag determines |
1150 | which field is live. */ | |
1151 | union | |
1152 | { | |
1153 | /* The location description associated with this DIE, if any. */ | |
1154 | struct dwarf_block *locdesc; | |
1155 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1156 | sect_offset sect_off; |
6f06d47b | 1157 | } d {}; |
72bf9492 DJ |
1158 | |
1159 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1160 | CORE_ADDR lowpc = 0; |
1161 | CORE_ADDR highpc = 0; | |
72bf9492 | 1162 | |
93311388 | 1163 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1164 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1165 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1166 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1167 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1168 | |
1169 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1170 | DW_AT_specification (or DW_AT_abstract_origin or | |
1171 | DW_AT_extension). */ | |
6f06d47b | 1172 | sect_offset spec_offset {}; |
72bf9492 DJ |
1173 | |
1174 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1175 | if any. */ | |
6f06d47b YQ |
1176 | struct partial_die_info *die_parent = nullptr; |
1177 | struct partial_die_info *die_child = nullptr; | |
1178 | struct partial_die_info *die_sibling = nullptr; | |
1179 | ||
1180 | friend struct partial_die_info * | |
1181 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1182 | ||
1183 | private: | |
1184 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1185 | partial_die_info (sect_offset sect_off) | |
1186 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1187 | { | |
1188 | } | |
1189 | ||
1190 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1191 | int has_children_) | |
1192 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1193 | { | |
1194 | is_external = 0; | |
1195 | is_declaration = 0; | |
1196 | has_type = 0; | |
1197 | has_specification = 0; | |
1198 | has_pc_info = 0; | |
1199 | may_be_inlined = 0; | |
1200 | main_subprogram = 0; | |
1201 | scope_set = 0; | |
1202 | has_byte_size = 0; | |
1203 | has_const_value = 0; | |
1204 | has_template_arguments = 0; | |
1205 | fixup_called = 0; | |
1206 | is_dwz = 0; | |
1207 | spec_is_dwz = 0; | |
7d00ffec | 1208 | canonical_name = 0; |
6f06d47b | 1209 | } |
c906108c SS |
1210 | }; |
1211 | ||
c906108c SS |
1212 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1213 | but this would require a corresponding change in unpack_field_as_long | |
1214 | and friends. */ | |
1215 | static int bits_per_byte = 8; | |
1216 | ||
9c6a1327 TT |
1217 | struct variant_part_builder; |
1218 | ||
1219 | /* When reading a variant, we track a bit more information about the | |
1220 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1221 | |
1222 | struct variant_field | |
1223 | { | |
9c6a1327 TT |
1224 | int first_field = -1; |
1225 | int last_field = -1; | |
1226 | ||
1227 | /* A variant can contain other variant parts. */ | |
1228 | std::vector<variant_part_builder> variant_parts; | |
1229 | ||
2ddeaf8a TT |
1230 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1231 | default branch. */ | |
9c6a1327 TT |
1232 | bool default_branch = false; |
1233 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1234 | value. */ | |
1235 | ULONGEST discriminant_value = 0; | |
1236 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1237 | data. */ | |
1238 | struct dwarf_block *discr_list_data = nullptr; | |
1239 | }; | |
1240 | ||
1241 | /* This represents a DW_TAG_variant_part. */ | |
1242 | ||
1243 | struct variant_part_builder | |
1244 | { | |
1245 | /* The offset of the discriminant field. */ | |
1246 | sect_offset discriminant_offset {}; | |
1247 | ||
1248 | /* Variants that are direct children of this variant part. */ | |
1249 | std::vector<variant_field> variants; | |
1250 | ||
1251 | /* True if we're currently reading a variant. */ | |
1252 | bool processing_variant = false; | |
2ddeaf8a TT |
1253 | }; |
1254 | ||
52059ffd TT |
1255 | struct nextfield |
1256 | { | |
be2daae6 TT |
1257 | int accessibility = 0; |
1258 | int virtuality = 0; | |
9c6a1327 TT |
1259 | /* Variant parts need to find the discriminant, which is a DIE |
1260 | reference. We track the section offset of each field to make | |
1261 | this link. */ | |
1262 | sect_offset offset; | |
be2daae6 | 1263 | struct field field {}; |
52059ffd TT |
1264 | }; |
1265 | ||
1266 | struct fnfieldlist | |
1267 | { | |
be2daae6 TT |
1268 | const char *name = nullptr; |
1269 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1270 | }; |
1271 | ||
c906108c SS |
1272 | /* The routines that read and process dies for a C struct or C++ class |
1273 | pass lists of data member fields and lists of member function fields | |
1274 | in an instance of a field_info structure, as defined below. */ | |
1275 | struct field_info | |
2de01bdb SM |
1276 | { |
1277 | /* List of data member and baseclasses fields. */ | |
1278 | std::vector<struct nextfield> fields; | |
1279 | std::vector<struct nextfield> baseclasses; | |
1280 | ||
1281 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1282 | bool non_public_fields = false; |
2de01bdb SM |
1283 | |
1284 | /* Member function fieldlist array, contains name of possibly overloaded | |
1285 | member function, number of overloaded member functions and a pointer | |
1286 | to the head of the member function field chain. */ | |
1287 | std::vector<struct fnfieldlist> fnfieldlists; | |
1288 | ||
1289 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1290 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1291 | std::vector<struct decl_field> typedef_field_list; | |
1292 | ||
1293 | /* Nested types defined by this class and the number of elements in this | |
1294 | list. */ | |
1295 | std::vector<struct decl_field> nested_types_list; | |
1296 | ||
1297 | /* If non-null, this is the variant part we are currently | |
1298 | reading. */ | |
1299 | variant_part_builder *current_variant_part = nullptr; | |
1300 | /* This holds all the top-level variant parts attached to the type | |
1301 | we're reading. */ | |
1302 | std::vector<variant_part_builder> variant_parts; | |
1303 | ||
1304 | /* Return the total number of fields (including baseclasses). */ | |
1305 | int nfields () const | |
c5aa993b | 1306 | { |
2de01bdb SM |
1307 | return fields.size () + baseclasses.size (); |
1308 | } | |
1309 | }; | |
c906108c | 1310 | |
ae038cb0 DJ |
1311 | /* Loaded secondary compilation units are kept in memory until they |
1312 | have not been referenced for the processing of this many | |
1313 | compilation units. Set this to zero to disable caching. Cache | |
1314 | sizes of up to at least twenty will improve startup time for | |
1315 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1316 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1317 | static void |
b4f54984 DE |
1318 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1319 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1320 | { |
3e43a32a | 1321 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1322 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1323 | value); |
1324 | } | |
4390d890 | 1325 | \f |
c906108c SS |
1326 | /* local function prototypes */ |
1327 | ||
918dd910 JK |
1328 | static void dwarf2_find_base_address (struct die_info *die, |
1329 | struct dwarf2_cu *cu); | |
1330 | ||
891813be | 1331 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1332 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1333 | const char *name); | |
0018ea6f | 1334 | |
f1902523 JK |
1335 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1336 | const gdb_byte *info_ptr, | |
3e225074 | 1337 | struct die_info *type_unit_die); |
f1902523 | 1338 | |
976ca316 | 1339 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1340 | |
72bf9492 DJ |
1341 | static void scan_partial_symbols (struct partial_die_info *, |
1342 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1343 | int, struct dwarf2_cu *); |
c906108c | 1344 | |
72bf9492 DJ |
1345 | static void add_partial_symbol (struct partial_die_info *, |
1346 | struct dwarf2_cu *); | |
63d06c5c | 1347 | |
72bf9492 DJ |
1348 | static void add_partial_namespace (struct partial_die_info *pdi, |
1349 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1350 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1351 | |
5d7cb8df | 1352 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1353 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1354 | struct dwarf2_cu *cu); |
1355 | ||
72bf9492 DJ |
1356 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1357 | struct dwarf2_cu *cu); | |
91c24f0a | 1358 | |
bc30ff58 JB |
1359 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1360 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1361 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1362 | |
d521ce57 | 1363 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1364 | |
dee91e82 | 1365 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1366 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1367 | |
fb816e8b TV |
1368 | /* A pair of partial_die_info and compilation unit. */ |
1369 | struct cu_partial_die_info | |
1370 | { | |
1371 | /* The compilation unit of the partial_die_info. */ | |
1372 | struct dwarf2_cu *cu; | |
1373 | /* A partial_die_info. */ | |
1374 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1375 | |
1376 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1377 | : cu (cu), | |
1378 | pdi (pdi) | |
405feb71 | 1379 | { /* Nothing. */ } |
122cf0f2 AB |
1380 | |
1381 | private: | |
1382 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1383 | }; |
1384 | ||
122cf0f2 AB |
1385 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1386 | struct dwarf2_cu *); | |
72bf9492 | 1387 | |
d521ce57 | 1388 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
4444f407 TT |
1389 | struct attribute *, |
1390 | const struct attr_abbrev *, | |
7a5f294d | 1391 | const gdb_byte *); |
18a8505e AT |
1392 | |
1393 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1394 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1395 | |
1396 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1397 | |
976ca316 SM |
1398 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1399 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1400 | |
ed2dc618 | 1401 | static const char *read_indirect_string |
976ca316 | 1402 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1403 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1404 | |
ed2dc618 | 1405 | static const char *read_indirect_string_at_offset |
976ca316 | 1406 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1407 | |
d521ce57 TT |
1408 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1409 | const gdb_byte *, | |
3019eac3 DE |
1410 | unsigned int *); |
1411 | ||
18a8505e AT |
1412 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1413 | ULONGEST str_index); | |
1414 | ||
1415 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1416 | ULONGEST str_index); | |
3019eac3 | 1417 | |
e142c38c | 1418 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1419 | |
e142c38c DJ |
1420 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1421 | struct dwarf2_cu *); | |
c906108c | 1422 | |
7d45c7c3 | 1423 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1424 | struct dwarf2_cu *cu); |
7d45c7c3 | 1425 | |
a084a2a6 AT |
1426 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1427 | ||
05cf31d1 | 1428 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1429 | struct dwarf2_cu *cu); |
05cf31d1 | 1430 | |
e142c38c | 1431 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1432 | |
e142c38c | 1433 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1434 | struct dwarf2_cu **); |
63d06c5c | 1435 | |
9c541725 | 1436 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1437 | struct dwarf2_cu *cu); |
debd256d | 1438 | |
f3f5162e | 1439 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1440 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1441 | CORE_ADDR, int decode_mapping); |
c906108c | 1442 | |
804d2729 TT |
1443 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1444 | const char *); | |
c906108c | 1445 | |
a14ed312 | 1446 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1447 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1448 | |
ff39bb5e | 1449 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1450 | struct dwarf2_cu *); |
c906108c | 1451 | |
ff39bb5e | 1452 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1453 | struct type *type, |
1454 | const char *name, | |
1455 | struct obstack *obstack, | |
12df843f | 1456 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1457 | const gdb_byte **bytes, |
98bfdba5 | 1458 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1459 | |
57567375 TT |
1460 | static struct type *read_subrange_index_type (struct die_info *die, |
1461 | struct dwarf2_cu *cu); | |
1462 | ||
e7c27a73 | 1463 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1464 | |
b4ba55a1 JB |
1465 | static int need_gnat_info (struct dwarf2_cu *); |
1466 | ||
3e43a32a MS |
1467 | static struct type *die_descriptive_type (struct die_info *, |
1468 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1469 | |
1470 | static void set_descriptive_type (struct type *, struct die_info *, | |
1471 | struct dwarf2_cu *); | |
1472 | ||
e7c27a73 DJ |
1473 | static struct type *die_containing_type (struct die_info *, |
1474 | struct dwarf2_cu *); | |
c906108c | 1475 | |
ff39bb5e | 1476 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1477 | struct dwarf2_cu *); |
c906108c | 1478 | |
f792889a | 1479 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1480 | |
673bfd45 DE |
1481 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1482 | ||
0d5cff50 | 1483 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1484 | |
6e70227d | 1485 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1486 | const char *suffix, int physname, |
1487 | struct dwarf2_cu *cu); | |
63d06c5c | 1488 | |
e7c27a73 | 1489 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1490 | |
348e048f DE |
1491 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1492 | ||
e7c27a73 | 1493 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1494 | |
e7c27a73 | 1495 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1496 | |
96408a79 SA |
1497 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1498 | ||
71a3c369 TT |
1499 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1500 | ||
41144253 | 1501 | /* Return the .debug_loclists section to use for cu. */ |
1502 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1503 | ||
d0ce17d8 CT |
1504 | /* Return the .debug_rnglists section to use for cu. */ |
1505 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1506 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1507 | ||
3a2b436a | 1508 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1509 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1510 | enum pc_bounds_kind |
1511 | { | |
e385593e | 1512 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1513 | PC_BOUNDS_NOT_PRESENT, |
1514 | ||
e385593e JK |
1515 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1516 | were present but they do not form a valid range of PC addresses. */ | |
1517 | PC_BOUNDS_INVALID, | |
1518 | ||
3a2b436a JK |
1519 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1520 | PC_BOUNDS_RANGES, | |
1521 | ||
1522 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1523 | PC_BOUNDS_HIGH_LOW, | |
1524 | }; | |
1525 | ||
1526 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1527 | CORE_ADDR *, CORE_ADDR *, | |
1528 | struct dwarf2_cu *, | |
891813be | 1529 | dwarf2_psymtab *); |
c906108c | 1530 | |
fae299cd DC |
1531 | static void get_scope_pc_bounds (struct die_info *, |
1532 | CORE_ADDR *, CORE_ADDR *, | |
1533 | struct dwarf2_cu *); | |
1534 | ||
801e3a5b | 1535 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1536 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1537 | |
a14ed312 | 1538 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1539 | struct dwarf2_cu *); |
c906108c | 1540 | |
a14ed312 | 1541 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1542 | struct type *, struct dwarf2_cu *); |
c906108c | 1543 | |
a14ed312 | 1544 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1545 | struct die_info *, struct type *, |
e7c27a73 | 1546 | struct dwarf2_cu *); |
c906108c | 1547 | |
a14ed312 | 1548 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1549 | struct type *, |
1550 | struct dwarf2_cu *); | |
c906108c | 1551 | |
134d01f1 | 1552 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1553 | |
e7c27a73 | 1554 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1555 | |
e7c27a73 | 1556 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1557 | |
5d7cb8df JK |
1558 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1559 | ||
804d2729 | 1560 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1561 | |
27aa8d6a SW |
1562 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1563 | ||
74921315 KS |
1564 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1565 | ||
f55ee35c JK |
1566 | static struct type *read_module_type (struct die_info *die, |
1567 | struct dwarf2_cu *cu); | |
1568 | ||
38d518c9 | 1569 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1570 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1571 | |
134d01f1 | 1572 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1573 | |
7d79de9a TT |
1574 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1575 | bool * = nullptr); | |
c906108c | 1576 | |
6e70227d | 1577 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1578 | struct dwarf2_cu *); |
1579 | ||
bf6af496 | 1580 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1581 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1582 | struct die_info *); |
639d11d3 | 1583 | |
dee91e82 | 1584 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1585 | const gdb_byte *info_ptr, |
1586 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1587 | struct die_info *parent); |
1588 | ||
d521ce57 TT |
1589 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1590 | struct die_info **, const gdb_byte *, | |
3e225074 | 1591 | int); |
3019eac3 | 1592 | |
d521ce57 | 1593 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1594 | struct die_info **, const gdb_byte *); |
93311388 | 1595 | |
e7c27a73 | 1596 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1597 | |
15d034d0 | 1598 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1599 | struct objfile *); |
71c25dea | 1600 | |
15d034d0 | 1601 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1602 | |
15d034d0 | 1603 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1604 | struct die_info *die, |
1605 | struct dwarf2_cu *cu); | |
1606 | ||
ca69b9e6 DE |
1607 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1608 | struct dwarf2_cu *cu); | |
1609 | ||
e142c38c | 1610 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1611 | struct dwarf2_cu **); |
9219021c | 1612 | |
d97bc12b DE |
1613 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1614 | ||
1615 | static void dump_die_for_error (struct die_info *); | |
1616 | ||
1617 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1618 | struct die_info *); | |
c906108c | 1619 | |
d97bc12b | 1620 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1621 | |
51545339 | 1622 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1623 | struct dwarf2_cu *); |
c906108c | 1624 | |
348e048f | 1625 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1626 | const struct attribute *, |
348e048f DE |
1627 | struct dwarf2_cu **); |
1628 | ||
10b3939b | 1629 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1630 | const struct attribute *, |
f2f0e013 | 1631 | struct dwarf2_cu **); |
c906108c | 1632 | |
348e048f | 1633 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1634 | const struct attribute *, |
348e048f DE |
1635 | struct dwarf2_cu **); |
1636 | ||
ac9ec31b DE |
1637 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1638 | struct dwarf2_cu *); | |
1639 | ||
1640 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1641 | const struct attribute *, |
ac9ec31b DE |
1642 | struct dwarf2_cu *); |
1643 | ||
ab432490 SM |
1644 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1645 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1646 | |
ab432490 SM |
1647 | static void read_signatured_type (signatured_type *sig_type, |
1648 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1649 | |
63e43d3a PMR |
1650 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1651 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1652 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1653 | |
c906108c SS |
1654 | /* memory allocation interface */ |
1655 | ||
7b5a2f43 | 1656 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1657 | |
b60c80d6 | 1658 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1659 | |
43f3e411 | 1660 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1661 | |
8cf6f0b1 TT |
1662 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1663 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1664 | const struct attribute *attr); |
8cf6f0b1 | 1665 | |
ff39bb5e | 1666 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1667 | struct symbol *sym, |
f1e6e072 TT |
1668 | struct dwarf2_cu *cu, |
1669 | int is_block); | |
4c2df51b | 1670 | |
d521ce57 TT |
1671 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1672 | const gdb_byte *info_ptr, | |
7c32eebb | 1673 | const struct abbrev_info *abbrev); |
4bb7a0a7 | 1674 | |
72bf9492 DJ |
1675 | static hashval_t partial_die_hash (const void *item); |
1676 | ||
1677 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1678 | ||
ae038cb0 | 1679 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1680 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1681 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1682 | |
9816fde3 | 1683 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1684 | struct die_info *comp_unit_die, |
1685 | enum language pretend_language); | |
93311388 | 1686 | |
f792889a | 1687 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1688 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1689 | |
976ca316 | 1690 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1691 | |
ab432490 SM |
1692 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1693 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1694 | dwarf2_cu *existing_cu, |
ab432490 SM |
1695 | bool skip_partial, |
1696 | enum language pretend_language); | |
10b3939b | 1697 | |
8fc0b21d | 1698 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1699 | enum language pretend_language); |
10b3939b | 1700 | |
8fc0b21d | 1701 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1702 | enum language pretend_language); |
f4dc4d17 | 1703 | |
10b3939b DJ |
1704 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1705 | struct dwarf2_per_cu_data *); | |
1706 | ||
ae038cb0 DJ |
1707 | static void dwarf2_mark (struct dwarf2_cu *); |
1708 | ||
b64f50a1 | 1709 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1710 | dwarf2_per_cu_data *per_cu, |
1711 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1712 | |
f792889a | 1713 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1714 | |
120ce1b5 SM |
1715 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1716 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1717 | enum language pretend_language); |
1718 | ||
976ca316 | 1719 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1720 | |
b303c6f6 AB |
1721 | /* Class, the destructor of which frees all allocated queue entries. This |
1722 | will only have work to do if an error was thrown while processing the | |
1723 | dwarf. If no error was thrown then the queue entries should have all | |
1724 | been processed, and freed, as we went along. */ | |
1725 | ||
1726 | class dwarf2_queue_guard | |
1727 | { | |
1728 | public: | |
39856def TT |
1729 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1730 | : m_per_objfile (per_objfile) | |
1731 | { | |
08ac5771 SM |
1732 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1733 | ||
1734 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1735 | } |
b303c6f6 AB |
1736 | |
1737 | /* Free any entries remaining on the queue. There should only be | |
1738 | entries left if we hit an error while processing the dwarf. */ | |
1739 | ~dwarf2_queue_guard () | |
1740 | { | |
08ac5771 SM |
1741 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1742 | ||
1743 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1744 | } |
b303c6f6 | 1745 | |
39856def | 1746 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1747 | |
39856def TT |
1748 | private: |
1749 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1750 | }; |
1751 | ||
39856def TT |
1752 | dwarf2_queue_item::~dwarf2_queue_item () |
1753 | { | |
1754 | /* Anything still marked queued is likely to be in an | |
1755 | inconsistent state, so discard it. */ | |
1756 | if (per_cu->queued) | |
1757 | { | |
7188ed02 | 1758 | per_objfile->remove_cu (per_cu); |
39856def TT |
1759 | per_cu->queued = 0; |
1760 | } | |
1761 | } | |
1762 | ||
d721ba37 PA |
1763 | /* The return type of find_file_and_directory. Note, the enclosed |
1764 | string pointers are only valid while this object is valid. */ | |
1765 | ||
1766 | struct file_and_directory | |
1767 | { | |
1768 | /* The filename. This is never NULL. */ | |
1769 | const char *name; | |
1770 | ||
1771 | /* The compilation directory. NULL if not known. If we needed to | |
1772 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1773 | points directly to the DW_AT_comp_dir string attribute owned by | |
1774 | the obstack that owns the DIE. */ | |
1775 | const char *comp_dir; | |
1776 | ||
1777 | /* If we needed to build a new string for comp_dir, this is what | |
1778 | owns the storage. */ | |
1779 | std::string comp_dir_storage; | |
1780 | }; | |
1781 | ||
1782 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1783 | struct dwarf2_cu *cu); | |
9291a0cd | 1784 | |
298e9637 | 1785 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1786 | |
298e9637 | 1787 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1788 | |
57d63ce2 | 1789 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1790 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1791 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1792 | |
976ca316 | 1793 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1794 | |
3019eac3 | 1795 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1796 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1797 | ULONGEST signature); | |
3019eac3 DE |
1798 | |
1799 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1800 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1801 | |
1b555f17 | 1802 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1803 | |
263db9a1 TT |
1804 | /* A unique pointer to a dwo_file. */ |
1805 | ||
51ac9db5 | 1806 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1807 | |
976ca316 | 1808 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1809 | |
1b80a9fa | 1810 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1811 | |
1812 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1813 | \f |
1814 | /* Various complaints about symbol reading that don't abort the process. */ | |
1815 | ||
4390d890 DE |
1816 | static void |
1817 | dwarf2_debug_line_missing_file_complaint (void) | |
1818 | { | |
b98664d3 | 1819 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1820 | } |
1821 | ||
1822 | static void | |
1823 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1824 | { | |
b98664d3 | 1825 | complaint (_(".debug_line section has line " |
4390d890 DE |
1826 | "program sequence without an end")); |
1827 | } | |
1828 | ||
1829 | static void | |
1830 | dwarf2_complex_location_expr_complaint (void) | |
1831 | { | |
b98664d3 | 1832 | complaint (_("location expression too complex")); |
4390d890 DE |
1833 | } |
1834 | ||
1835 | static void | |
1836 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1837 | int arg3) | |
1838 | { | |
b98664d3 | 1839 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1840 | arg1, arg2, arg3); |
1841 | } | |
1842 | ||
4390d890 DE |
1843 | static void |
1844 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1845 | { | |
b98664d3 | 1846 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1847 | arg1, arg2); |
1848 | } | |
527f3840 JK |
1849 | |
1850 | /* Hash function for line_header_hash. */ | |
1851 | ||
1852 | static hashval_t | |
1853 | line_header_hash (const struct line_header *ofs) | |
1854 | { | |
9c541725 | 1855 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1856 | } |
1857 | ||
1858 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1859 | ||
1860 | static hashval_t | |
1861 | line_header_hash_voidp (const void *item) | |
1862 | { | |
9a3c8263 | 1863 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1864 | |
1865 | return line_header_hash (ofs); | |
1866 | } | |
1867 | ||
1868 | /* Equality function for line_header_hash. */ | |
1869 | ||
1870 | static int | |
1871 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1872 | { | |
9a3c8263 SM |
1873 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1874 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1875 | |
9c541725 | 1876 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1877 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1878 | } | |
1879 | ||
4390d890 | 1880 | \f |
9291a0cd | 1881 | |
330cdd98 PA |
1882 | /* See declaration. */ |
1883 | ||
5989a64e SM |
1884 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1885 | bool can_copy_) | |
c3699833 SM |
1886 | : obfd (obfd), |
1887 | can_copy (can_copy_) | |
330cdd98 PA |
1888 | { |
1889 | if (names == NULL) | |
1890 | names = &dwarf2_elf_names; | |
1891 | ||
330cdd98 PA |
1892 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1893 | locate_sections (obfd, sec, *names); | |
1894 | } | |
1895 | ||
5989a64e | 1896 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1897 | { |
0d305d5c | 1898 | for (auto &per_cu : all_comp_units) |
ae640021 | 1899 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1900 | |
5989a64e | 1901 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1902 | } |
1903 | ||
7188ed02 | 1904 | /* See read.h. */ |
330cdd98 PA |
1905 | |
1906 | void | |
7188ed02 | 1907 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1908 | { |
08ac5771 SM |
1909 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1910 | ||
7188ed02 SM |
1911 | for (auto pair : m_dwarf2_cus) |
1912 | delete pair.second; | |
330cdd98 | 1913 | |
7188ed02 | 1914 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1915 | } |
1916 | ||
11ed8cad TT |
1917 | /* A helper class that calls free_cached_comp_units on |
1918 | destruction. */ | |
1919 | ||
1920 | class free_cached_comp_units | |
1921 | { | |
1922 | public: | |
1923 | ||
1924 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1925 | : m_per_objfile (per_objfile) | |
1926 | { | |
1927 | } | |
1928 | ||
1929 | ~free_cached_comp_units () | |
1930 | { | |
7188ed02 | 1931 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1932 | } |
1933 | ||
1934 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1935 | ||
1936 | private: | |
1937 | ||
1938 | dwarf2_per_objfile *m_per_objfile; | |
1939 | }; | |
1940 | ||
af758d11 SM |
1941 | /* See read.h. */ |
1942 | ||
1943 | bool | |
1944 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1945 | { | |
1946 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1947 | ||
1948 | return this->m_symtabs[per_cu->index] != nullptr; | |
1949 | } | |
1950 | ||
1951 | /* See read.h. */ | |
1952 | ||
1953 | compunit_symtab * | |
1954 | dwarf2_per_objfile::get_symtab (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]; | |
1959 | } | |
1960 | ||
1961 | /* See read.h. */ | |
1962 | ||
1963 | void | |
1964 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1965 | compunit_symtab *symtab) | |
1966 | { | |
1967 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1968 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1969 | ||
1970 | this->m_symtabs[per_cu->index] = symtab; | |
1971 | } | |
1972 | ||
c906108c | 1973 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1974 | information and return true if we have enough to do something. |
1975 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1976 | ELF names are used. CAN_COPY is true for formats where symbol |
1977 | interposition is possible and so symbol values must follow copy | |
1978 | relocation rules. */ | |
c906108c SS |
1979 | |
1980 | int | |
251d32d9 | 1981 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1982 | const struct dwarf2_debug_sections *names, |
4b610737 | 1983 | bool can_copy) |
c906108c | 1984 | { |
97cbe998 SDJ |
1985 | if (objfile->flags & OBJF_READNEVER) |
1986 | return 0; | |
1987 | ||
976ca316 | 1988 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1989 | |
976ca316 | 1990 | if (per_objfile == NULL) |
5989a64e | 1991 | { |
17ee85fc TT |
1992 | dwarf2_per_bfd *per_bfd; |
1993 | ||
8a91fbdf SM |
1994 | /* We can share a "dwarf2_per_bfd" with other objfiles if the |
1995 | BFD doesn't require relocations. | |
1996 | ||
1997 | We don't share with objfiles for which -readnow was requested, | |
1998 | because it would complicate things when loading the same BFD with | |
1999 | -readnow and then without -readnow. */ | |
2000 | if (!gdb_bfd_requires_relocations (objfile->obfd) | |
2001 | && (objfile->flags & OBJF_READNOW) == 0) | |
17ee85fc TT |
2002 | { |
2003 | /* See if one has been created for this BFD yet. */ | |
2004 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
2005 | ||
2006 | if (per_bfd == nullptr) | |
2007 | { | |
2008 | /* No, create it now. */ | |
2009 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2010 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
2011 | } | |
2012 | } | |
2013 | else | |
2014 | { | |
2015 | /* No sharing possible, create one specifically for this objfile. */ | |
2016 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2017 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
2018 | } | |
5989a64e | 2019 | |
976ca316 | 2020 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 2021 | } |
5bfd760d | 2022 | |
976ca316 SM |
2023 | return (!per_objfile->per_bfd->info.is_virtual |
2024 | && per_objfile->per_bfd->info.s.section != NULL | |
2025 | && !per_objfile->per_bfd->abbrev.is_virtual | |
2026 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
2027 | } |
2028 | ||
330cdd98 | 2029 | /* See declaration. */ |
c906108c | 2030 | |
330cdd98 | 2031 | void |
5989a64e SM |
2032 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
2033 | const dwarf2_debug_sections &names) | |
c906108c | 2034 | { |
fd361982 | 2035 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2036 | |
dc7650b8 JK |
2037 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2038 | { | |
2039 | } | |
950b7495 KS |
2040 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2041 | > bfd_get_file_size (abfd)) | |
2042 | { | |
2043 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2044 | warning (_("Discarding section %s which has a section size (%s" | |
2045 | ") larger than the file size [in module %s]"), | |
2046 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2047 | bfd_get_filename (abfd)); | |
2048 | } | |
fbedd546 | 2049 | else if (names.info.matches (sectp->name)) |
c906108c | 2050 | { |
330cdd98 | 2051 | this->info.s.section = sectp; |
fd361982 | 2052 | this->info.size = bfd_section_size (sectp); |
c906108c | 2053 | } |
fbedd546 | 2054 | else if (names.abbrev.matches (sectp->name)) |
c906108c | 2055 | { |
330cdd98 | 2056 | this->abbrev.s.section = sectp; |
fd361982 | 2057 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2058 | } |
fbedd546 | 2059 | else if (names.line.matches (sectp->name)) |
c906108c | 2060 | { |
330cdd98 | 2061 | this->line.s.section = sectp; |
fd361982 | 2062 | this->line.size = bfd_section_size (sectp); |
c906108c | 2063 | } |
fbedd546 | 2064 | else if (names.loc.matches (sectp->name)) |
c906108c | 2065 | { |
330cdd98 | 2066 | this->loc.s.section = sectp; |
fd361982 | 2067 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2068 | } |
fbedd546 | 2069 | else if (names.loclists.matches (sectp->name)) |
43988095 | 2070 | { |
330cdd98 | 2071 | this->loclists.s.section = sectp; |
fd361982 | 2072 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2073 | } |
fbedd546 | 2074 | else if (names.macinfo.matches (sectp->name)) |
c906108c | 2075 | { |
330cdd98 | 2076 | this->macinfo.s.section = sectp; |
fd361982 | 2077 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2078 | } |
fbedd546 | 2079 | else if (names.macro.matches (sectp->name)) |
cf2c3c16 | 2080 | { |
330cdd98 | 2081 | this->macro.s.section = sectp; |
fd361982 | 2082 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2083 | } |
fbedd546 | 2084 | else if (names.str.matches (sectp->name)) |
c906108c | 2085 | { |
330cdd98 | 2086 | this->str.s.section = sectp; |
fd361982 | 2087 | this->str.size = bfd_section_size (sectp); |
c906108c | 2088 | } |
fbedd546 | 2089 | else if (names.str_offsets.matches (sectp->name)) |
18a8505e AT |
2090 | { |
2091 | this->str_offsets.s.section = sectp; | |
2092 | this->str_offsets.size = bfd_section_size (sectp); | |
2093 | } | |
fbedd546 | 2094 | else if (names.line_str.matches (sectp->name)) |
43988095 | 2095 | { |
330cdd98 | 2096 | this->line_str.s.section = sectp; |
fd361982 | 2097 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2098 | } |
fbedd546 | 2099 | else if (names.addr.matches (sectp->name)) |
3019eac3 | 2100 | { |
330cdd98 | 2101 | this->addr.s.section = sectp; |
fd361982 | 2102 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2103 | } |
fbedd546 | 2104 | else if (names.frame.matches (sectp->name)) |
b6af0555 | 2105 | { |
330cdd98 | 2106 | this->frame.s.section = sectp; |
fd361982 | 2107 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2108 | } |
fbedd546 | 2109 | else if (names.eh_frame.matches (sectp->name)) |
b6af0555 | 2110 | { |
330cdd98 | 2111 | this->eh_frame.s.section = sectp; |
fd361982 | 2112 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2113 | } |
fbedd546 | 2114 | else if (names.ranges.matches (sectp->name)) |
af34e669 | 2115 | { |
330cdd98 | 2116 | this->ranges.s.section = sectp; |
fd361982 | 2117 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2118 | } |
fbedd546 | 2119 | else if (names.rnglists.matches (sectp->name)) |
43988095 | 2120 | { |
330cdd98 | 2121 | this->rnglists.s.section = sectp; |
fd361982 | 2122 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2123 | } |
fbedd546 | 2124 | else if (names.types.matches (sectp->name)) |
348e048f | 2125 | { |
8b70b953 TT |
2126 | struct dwarf2_section_info type_section; |
2127 | ||
2128 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2129 | type_section.s.section = sectp; |
fd361982 | 2130 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2131 | |
fd5866f6 | 2132 | this->types.push_back (type_section); |
348e048f | 2133 | } |
fbedd546 | 2134 | else if (names.gdb_index.matches (sectp->name)) |
9291a0cd | 2135 | { |
330cdd98 | 2136 | this->gdb_index.s.section = sectp; |
fd361982 | 2137 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2138 | } |
fbedd546 | 2139 | else if (names.debug_names.matches (sectp->name)) |
927aa2e7 JK |
2140 | { |
2141 | this->debug_names.s.section = sectp; | |
fd361982 | 2142 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2143 | } |
fbedd546 | 2144 | else if (names.debug_aranges.matches (sectp->name)) |
927aa2e7 JK |
2145 | { |
2146 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2147 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2148 | } |
dce234bc | 2149 | |
fd361982 AM |
2150 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2151 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2152 | this->has_section_at_zero = true; |
c906108c SS |
2153 | } |
2154 | ||
dce234bc | 2155 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2156 | SECTION_NAME. */ |
af34e669 | 2157 | |
dce234bc | 2158 | void |
3017a003 | 2159 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2160 | enum dwarf2_section_enum sect, |
2161 | asection **sectp, const gdb_byte **bufp, | |
2162 | bfd_size_type *sizep) | |
dce234bc | 2163 | { |
976ca316 | 2164 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2165 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2166 | |
2167 | /* We may see an objfile without any DWARF, in which case we just | |
2168 | return nothing. */ | |
976ca316 | 2169 | if (per_objfile == NULL) |
a3b2a86b TT |
2170 | { |
2171 | *sectp = NULL; | |
2172 | *bufp = NULL; | |
2173 | *sizep = 0; | |
2174 | return; | |
2175 | } | |
3017a003 TG |
2176 | switch (sect) |
2177 | { | |
2178 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2179 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2180 | break; |
2181 | case DWARF2_EH_FRAME: | |
976ca316 | 2182 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2183 | break; |
2184 | default: | |
2185 | gdb_assert_not_reached ("unexpected section"); | |
2186 | } | |
dce234bc | 2187 | |
96b79293 | 2188 | info->read (objfile); |
dce234bc | 2189 | |
96b79293 | 2190 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2191 | *bufp = info->buffer; |
2192 | *sizep = info->size; | |
2193 | } | |
2194 | ||
9291a0cd | 2195 | \f |
39298a5d | 2196 | /* DWARF quick_symbol_functions support. */ |
7b9f3c50 DE |
2197 | |
2198 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2199 | unique line tables, so we maintain a separate table of all .debug_line | |
2200 | derived entries to support the sharing. | |
2201 | All the quick functions need is the list of file names. We discard the | |
2202 | line_header when we're done and don't need to record it here. */ | |
2203 | struct quick_file_names | |
2204 | { | |
094b34ac DE |
2205 | /* The data used to construct the hash key. */ |
2206 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2207 | |
2208 | /* The number of entries in file_names, real_names. */ | |
2209 | unsigned int num_file_names; | |
2210 | ||
2211 | /* The file names from the line table, after being run through | |
2212 | file_full_name. */ | |
2213 | const char **file_names; | |
2214 | ||
2215 | /* The file names from the line table after being run through | |
2216 | gdb_realpath. These are computed lazily. */ | |
2217 | const char **real_names; | |
2218 | }; | |
2219 | ||
2220 | /* When using the index (and thus not using psymtabs), each CU has an | |
2221 | object of this type. This is used to hold information needed by | |
2222 | the various "quick" methods. */ | |
2223 | struct dwarf2_per_cu_quick_data | |
2224 | { | |
2225 | /* The file table. This can be NULL if there was no file table | |
2226 | or it's currently not read in. | |
5989a64e | 2227 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2228 | struct quick_file_names *file_names; |
2229 | ||
7b9f3c50 DE |
2230 | /* A temporary mark bit used when iterating over all CUs in |
2231 | expand_symtabs_matching. */ | |
2232 | unsigned int mark : 1; | |
2233 | ||
2234 | /* True if we've tried to read the file table and found there isn't one. | |
2235 | There will be no point in trying to read it again next time. */ | |
2236 | unsigned int no_file_data : 1; | |
2237 | }; | |
2238 | ||
edc02ceb TT |
2239 | /* A subclass of psymbol_functions that arranges to read the DWARF |
2240 | partial symbols when needed. */ | |
2241 | struct lazy_dwarf_reader : public psymbol_functions | |
2242 | { | |
2243 | using psymbol_functions::psymbol_functions; | |
2244 | ||
2245 | bool can_lazily_read_symbols () override | |
2246 | { | |
2247 | return true; | |
2248 | } | |
2249 | ||
2250 | void read_partial_symbols (struct objfile *objfile) override | |
2251 | { | |
2252 | if (dwarf2_has_info (objfile, nullptr)) | |
2253 | dwarf2_build_psymtabs (objfile, this); | |
2254 | } | |
2255 | }; | |
2256 | ||
2257 | static quick_symbol_functions_up | |
2258 | make_lazy_dwarf_reader () | |
2259 | { | |
2260 | return quick_symbol_functions_up (new lazy_dwarf_reader); | |
2261 | } | |
2262 | ||
39298a5d TT |
2263 | struct dwarf2_base_index_functions : public quick_symbol_functions |
2264 | { | |
2265 | bool has_symbols (struct objfile *objfile) override; | |
2266 | ||
2267 | struct symtab *find_last_source_symtab (struct objfile *objfile) override; | |
2268 | ||
2269 | void forget_cached_source_info (struct objfile *objfile) override; | |
2270 | ||
39298a5d TT |
2271 | enum language lookup_global_symbol_language (struct objfile *objfile, |
2272 | const char *name, | |
2273 | domain_enum domain, | |
2274 | bool *symbol_found_p) override | |
2275 | { | |
2276 | *symbol_found_p = false; | |
2277 | return language_unknown; | |
2278 | } | |
2279 | ||
4829711b | 2280 | void print_stats (struct objfile *objfile, bool print_bcache) override; |
39298a5d TT |
2281 | |
2282 | void expand_all_symtabs (struct objfile *objfile) override; | |
2283 | ||
39298a5d TT |
2284 | struct compunit_symtab *find_pc_sect_compunit_symtab |
2285 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
2286 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin) override; | |
2287 | ||
2288 | struct compunit_symtab *find_compunit_symtab_by_address | |
2289 | (struct objfile *objfile, CORE_ADDR address) override | |
2290 | { | |
2291 | return nullptr; | |
2292 | } | |
2293 | ||
2294 | void map_symbol_filenames (struct objfile *objfile, | |
f4655dee TT |
2295 | gdb::function_view<symbol_filename_ftype> fun, |
2296 | bool need_fullname) override; | |
39298a5d TT |
2297 | }; |
2298 | ||
2299 | struct dwarf2_gdb_index : public dwarf2_base_index_functions | |
2300 | { | |
39298a5d TT |
2301 | void dump (struct objfile *objfile) override; |
2302 | ||
0b7b2c2a | 2303 | void expand_matching_symbols |
39298a5d TT |
2304 | (struct objfile *, |
2305 | const lookup_name_info &lookup_name, | |
2306 | domain_enum domain, | |
2307 | int global, | |
39298a5d TT |
2308 | symbol_compare_ftype *ordered_compare) override; |
2309 | ||
df35e626 | 2310 | bool expand_symtabs_matching |
39298a5d TT |
2311 | (struct objfile *objfile, |
2312 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2313 | const lookup_name_info *lookup_name, | |
2314 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2315 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2316 | block_search_flags search_flags, |
3bfa51a7 | 2317 | domain_enum domain, |
39298a5d TT |
2318 | enum search_domain kind) override; |
2319 | }; | |
2320 | ||
2321 | struct dwarf2_debug_names_index : public dwarf2_base_index_functions | |
2322 | { | |
39298a5d TT |
2323 | void dump (struct objfile *objfile) override; |
2324 | ||
0b7b2c2a | 2325 | void expand_matching_symbols |
39298a5d TT |
2326 | (struct objfile *, |
2327 | const lookup_name_info &lookup_name, | |
2328 | domain_enum domain, | |
2329 | int global, | |
39298a5d TT |
2330 | symbol_compare_ftype *ordered_compare) override; |
2331 | ||
df35e626 | 2332 | bool expand_symtabs_matching |
39298a5d TT |
2333 | (struct objfile *objfile, |
2334 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2335 | const lookup_name_info *lookup_name, | |
2336 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2337 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2338 | block_search_flags search_flags, |
3bfa51a7 | 2339 | domain_enum domain, |
39298a5d TT |
2340 | enum search_domain kind) override; |
2341 | }; | |
2342 | ||
edc02ceb | 2343 | static quick_symbol_functions_up |
39298a5d TT |
2344 | make_dwarf_gdb_index () |
2345 | { | |
2346 | return quick_symbol_functions_up (new dwarf2_gdb_index); | |
2347 | } | |
2348 | ||
edc02ceb | 2349 | static quick_symbol_functions_up |
39298a5d TT |
2350 | make_dwarf_debug_names () |
2351 | { | |
2352 | return quick_symbol_functions_up (new dwarf2_debug_names_index); | |
2353 | } | |
2354 | ||
094b34ac DE |
2355 | /* Utility hash function for a stmt_list_hash. */ |
2356 | ||
2357 | static hashval_t | |
2358 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2359 | { | |
2360 | hashval_t v = 0; | |
2361 | ||
2362 | if (stmt_list_hash->dwo_unit != NULL) | |
2363 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2364 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2365 | return v; |
2366 | } | |
2367 | ||
2368 | /* Utility equality function for a stmt_list_hash. */ | |
2369 | ||
2370 | static int | |
2371 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2372 | const struct stmt_list_hash *rhs) | |
2373 | { | |
2374 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2375 | return 0; | |
2376 | if (lhs->dwo_unit != NULL | |
2377 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2378 | return 0; | |
2379 | ||
9c541725 | 2380 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2381 | } |
2382 | ||
7b9f3c50 DE |
2383 | /* Hash function for a quick_file_names. */ |
2384 | ||
2385 | static hashval_t | |
2386 | hash_file_name_entry (const void *e) | |
2387 | { | |
9a3c8263 SM |
2388 | const struct quick_file_names *file_data |
2389 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2390 | |
094b34ac | 2391 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2392 | } |
2393 | ||
2394 | /* Equality function for a quick_file_names. */ | |
2395 | ||
2396 | static int | |
2397 | eq_file_name_entry (const void *a, const void *b) | |
2398 | { | |
9a3c8263 SM |
2399 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2400 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2401 | |
094b34ac | 2402 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2403 | } |
2404 | ||
2405 | /* Delete function for a quick_file_names. */ | |
2406 | ||
2407 | static void | |
2408 | delete_file_name_entry (void *e) | |
2409 | { | |
9a3c8263 | 2410 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2411 | int i; |
2412 | ||
2413 | for (i = 0; i < file_data->num_file_names; ++i) | |
2414 | { | |
2415 | xfree ((void*) file_data->file_names[i]); | |
2416 | if (file_data->real_names) | |
2417 | xfree ((void*) file_data->real_names[i]); | |
2418 | } | |
2419 | ||
45940949 TT |
2420 | /* The space for the struct itself lives on the obstack, so we don't |
2421 | free it here. */ | |
7b9f3c50 DE |
2422 | } |
2423 | ||
2424 | /* Create a quick_file_names hash table. */ | |
2425 | ||
5895093f | 2426 | static htab_up |
7b9f3c50 DE |
2427 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2428 | { | |
5895093f TT |
2429 | return htab_up (htab_create_alloc (nr_initial_entries, |
2430 | hash_file_name_entry, eq_file_name_entry, | |
2431 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2432 | } |
9291a0cd | 2433 | |
ab432490 SM |
2434 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2435 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2436 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2437 | |
1b555f17 | 2438 | static dwarf2_cu * |
ab432490 SM |
2439 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2440 | bool skip_partial) | |
918dd910 | 2441 | { |
3019eac3 | 2442 | if (per_cu->is_debug_types) |
ab432490 | 2443 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2444 | else |
4a636814 SM |
2445 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2446 | skip_partial, language_minimal); | |
918dd910 | 2447 | |
7188ed02 SM |
2448 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2449 | if (cu == nullptr) | |
1b555f17 | 2450 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2451 | |
7188ed02 | 2452 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2453 | |
7188ed02 | 2454 | return cu; |
918dd910 JK |
2455 | } |
2456 | ||
1350c3b4 | 2457 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2458 | |
9291a0cd | 2459 | static void |
97a1449a | 2460 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2461 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2462 | { |
f4dc4d17 DE |
2463 | /* Skip type_unit_groups, reading the type units they contain |
2464 | is handled elsewhere. */ | |
197400e8 | 2465 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2466 | return; |
2467 | ||
08ac5771 SM |
2468 | { |
2469 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2470 | the queue. After this point we're guaranteed to leave this function | |
2471 | with the dwarf queue empty. */ | |
2472 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2473 | |
08ac5771 SM |
2474 | if (!per_objfile->symtab_set_p (per_cu)) |
2475 | { | |
2476 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2477 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2478 | ||
2479 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2480 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2481 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2482 | if (!per_cu->is_debug_types | |
2483 | && cu != NULL | |
2484 | && cu->dwo_unit != NULL | |
2485 | && per_objfile->per_bfd->index_table != NULL | |
2486 | && per_objfile->per_bfd->index_table->version <= 7 | |
2487 | /* DWP files aren't supported yet. */ | |
2488 | && get_dwp_file (per_objfile) == NULL) | |
2489 | queue_and_load_all_dwo_tus (cu); | |
2490 | } | |
9291a0cd | 2491 | |
08ac5771 SM |
2492 | process_queue (per_objfile); |
2493 | } | |
9291a0cd TT |
2494 | |
2495 | /* Age the cache, releasing compilation units that have not | |
2496 | been used recently. */ | |
976ca316 | 2497 | per_objfile->age_comp_units (); |
9291a0cd TT |
2498 | } |
2499 | ||
97a1449a SM |
2500 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2501 | the per-objfile for which this symtab is instantiated. | |
2502 | ||
2503 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2504 | |
43f3e411 | 2505 | static struct compunit_symtab * |
97a1449a | 2506 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2507 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2508 | bool skip_partial) |
9291a0cd | 2509 | { |
976ca316 | 2510 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2511 | |
976ca316 | 2512 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2513 | { |
976ca316 | 2514 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2515 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2516 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2517 | process_cu_includes (per_objfile); | |
9291a0cd | 2518 | } |
f194fefb | 2519 | |
976ca316 | 2520 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2521 | } |
2522 | ||
d3473f0c TT |
2523 | /* See read.h. */ |
2524 | ||
0d305d5c | 2525 | std::unique_ptr<dwarf2_per_cu_data> |
5989a64e | 2526 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c | 2527 | { |
0d305d5c | 2528 | std::unique_ptr<dwarf2_per_cu_data> result (new dwarf2_per_cu_data); |
1859c670 | 2529 | result->per_bfd = this; |
d3473f0c TT |
2530 | result->index = m_num_psymtabs++; |
2531 | return result; | |
2532 | } | |
2533 | ||
2534 | /* See read.h. */ | |
2535 | ||
0d305d5c | 2536 | std::unique_ptr<signatured_type> |
5989a64e | 2537 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c | 2538 | { |
0d305d5c TT |
2539 | std::unique_ptr<signatured_type> result (new signatured_type); |
2540 | result->per_bfd = this; | |
2541 | result->index = m_num_psymtabs++; | |
91eea9cc | 2542 | tu_stats.nr_tus++; |
d3473f0c TT |
2543 | return result; |
2544 | } | |
2545 | ||
168c9250 | 2546 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2547 | obstack, and constructed with the specified field values. */ |
4b514bc8 | 2548 | |
0d305d5c | 2549 | static std::unique_ptr<dwarf2_per_cu_data> |
168c9250 SM |
2550 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2551 | struct dwarf2_section_info *section, | |
2552 | int is_dwz, | |
2553 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2554 | { |
0d305d5c | 2555 | std::unique_ptr<dwarf2_per_cu_data> the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2556 | the_cu->sect_off = sect_off; |
2557 | the_cu->length = length; | |
4b514bc8 | 2558 | the_cu->section = section; |
168c9250 | 2559 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2560 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2561 | the_cu->is_dwz = is_dwz; |
2562 | return the_cu; | |
2563 | } | |
2564 | ||
2ec9a5e0 TT |
2565 | /* A helper for create_cus_from_index that handles a given list of |
2566 | CUs. */ | |
2fdf6df6 | 2567 | |
74a0d9f6 | 2568 | static void |
168c9250 | 2569 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2570 | const gdb_byte *cu_list, offset_type n_elements, |
2571 | struct dwarf2_section_info *section, | |
b76e467d | 2572 | int is_dwz) |
9291a0cd | 2573 | { |
12359b5e | 2574 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2575 | { |
74a0d9f6 | 2576 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2577 | |
2578 | sect_offset sect_off | |
2579 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2580 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2581 | cu_list += 2 * 8; |
2582 | ||
0d305d5c | 2583 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
168c9250 SM |
2584 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2585 | length); | |
0d305d5c | 2586 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
9291a0cd | 2587 | } |
9291a0cd TT |
2588 | } |
2589 | ||
2ec9a5e0 | 2590 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2591 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2592 | |
74a0d9f6 | 2593 | static void |
168c9250 | 2594 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2595 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2596 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2597 | { | |
168c9250 SM |
2598 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2599 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2600 | |
168c9250 SM |
2601 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2602 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2603 | |
2604 | if (dwz_elements == 0) | |
74a0d9f6 | 2605 | return; |
2ec9a5e0 | 2606 | |
168c9250 SM |
2607 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2608 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2609 | &dwz->info, 1); |
2ec9a5e0 TT |
2610 | } |
2611 | ||
1fd400ff | 2612 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2613 | |
74a0d9f6 | 2614 | static void |
12359b5e | 2615 | create_signatured_type_table_from_index |
168c9250 SM |
2616 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2617 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2618 | { |
298e9637 | 2619 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2620 | |
12359b5e | 2621 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2622 | { |
0d305d5c | 2623 | std::unique_ptr<signatured_type> sig_type; |
9c541725 | 2624 | ULONGEST signature; |
1fd400ff | 2625 | void **slot; |
9c541725 | 2626 | cu_offset type_offset_in_tu; |
1fd400ff | 2627 | |
74a0d9f6 | 2628 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2629 | sect_offset sect_off |
2630 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2631 | type_offset_in_tu | |
2632 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2633 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2634 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2635 | bytes += 3 * 8; | |
2636 | ||
168c9250 | 2637 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2638 | sig_type->signature = signature; |
9c541725 | 2639 | sig_type->type_offset_in_tu = type_offset_in_tu; |
0d305d5c TT |
2640 | sig_type->is_debug_types = 1; |
2641 | sig_type->section = section; | |
2642 | sig_type->sect_off = sect_off; | |
2643 | sig_type->v.quick | |
168c9250 | 2644 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2645 | struct dwarf2_per_cu_quick_data); |
2646 | ||
0d305d5c TT |
2647 | slot = htab_find_slot (sig_types_hash.get (), sig_type.get (), INSERT); |
2648 | *slot = sig_type.get (); | |
1fd400ff | 2649 | |
91eea9cc | 2650 | per_bfd->all_comp_units.push_back (std::move (sig_type)); |
1fd400ff TT |
2651 | } |
2652 | ||
168c9250 | 2653 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2654 | } |
2655 | ||
927aa2e7 JK |
2656 | /* Create the signatured type hash table from .debug_names. */ |
2657 | ||
2658 | static void | |
2659 | create_signatured_type_table_from_debug_names | |
976ca316 | 2660 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2661 | const mapped_debug_names &map, |
2662 | struct dwarf2_section_info *section, | |
2663 | struct dwarf2_section_info *abbrev_section) | |
2664 | { | |
976ca316 | 2665 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2666 | |
96b79293 TT |
2667 | section->read (objfile); |
2668 | abbrev_section->read (objfile); | |
927aa2e7 | 2669 | |
298e9637 | 2670 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2671 | |
2672 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2673 | { | |
0d305d5c | 2674 | std::unique_ptr<signatured_type> sig_type; |
927aa2e7 | 2675 | void **slot; |
927aa2e7 JK |
2676 | |
2677 | sect_offset sect_off | |
2678 | = (sect_offset) (extract_unsigned_integer | |
2679 | (map.tu_table_reordered + i * map.offset_size, | |
2680 | map.offset_size, | |
2681 | map.dwarf5_byte_order)); | |
2682 | ||
2683 | comp_unit_head cu_header; | |
976ca316 | 2684 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2685 | abbrev_section, |
927aa2e7 JK |
2686 | section->buffer + to_underlying (sect_off), |
2687 | rcuh_kind::TYPE); | |
2688 | ||
976ca316 | 2689 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2690 | sig_type->signature = cu_header.signature; |
2691 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
0d305d5c TT |
2692 | sig_type->is_debug_types = 1; |
2693 | sig_type->section = section; | |
2694 | sig_type->sect_off = sect_off; | |
2695 | sig_type->v.quick | |
976ca316 | 2696 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2697 | struct dwarf2_per_cu_quick_data); |
2698 | ||
0d305d5c TT |
2699 | slot = htab_find_slot (sig_types_hash.get (), sig_type.get (), INSERT); |
2700 | *slot = sig_type.get (); | |
927aa2e7 | 2701 | |
91eea9cc | 2702 | per_objfile->per_bfd->all_comp_units.push_back (std::move (sig_type)); |
927aa2e7 JK |
2703 | } |
2704 | ||
976ca316 | 2705 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2706 | } |
2707 | ||
9291a0cd | 2708 | /* Read the address map data from the mapped index, and use it to |
efd7398e | 2709 | populate the psymtabs_addrmap. */ |
2fdf6df6 | 2710 | |
9291a0cd | 2711 | static void |
976ca316 | 2712 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2713 | struct mapped_index *index) |
9291a0cd | 2714 | { |
976ca316 | 2715 | struct objfile *objfile = per_objfile->objfile; |
efd7398e | 2716 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
08feed99 | 2717 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2718 | const gdb_byte *iter, *end; |
9291a0cd | 2719 | struct addrmap *mutable_map; |
9291a0cd TT |
2720 | CORE_ADDR baseaddr; |
2721 | ||
8268c778 PA |
2722 | auto_obstack temp_obstack; |
2723 | ||
9291a0cd TT |
2724 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2725 | ||
f00a2de2 PA |
2726 | iter = index->address_table.data (); |
2727 | end = iter + index->address_table.size (); | |
9291a0cd | 2728 | |
b3b3bada | 2729 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2730 | |
2731 | while (iter < end) | |
2732 | { | |
2733 | ULONGEST hi, lo, cu_index; | |
2734 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2735 | iter += 8; | |
2736 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2737 | iter += 8; | |
2738 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2739 | iter += 4; | |
f652bce2 | 2740 | |
24a55014 | 2741 | if (lo > hi) |
f652bce2 | 2742 | { |
b98664d3 | 2743 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2744 | hex_string (lo), hex_string (hi)); |
24a55014 | 2745 | continue; |
f652bce2 | 2746 | } |
24a55014 | 2747 | |
efd7398e | 2748 | if (cu_index >= per_bfd->all_comp_units.size ()) |
f652bce2 | 2749 | { |
b98664d3 | 2750 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2751 | (unsigned) cu_index); |
24a55014 | 2752 | continue; |
f652bce2 | 2753 | } |
24a55014 | 2754 | |
79748972 TT |
2755 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2756 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2757 | addrmap_set_empty (mutable_map, lo, hi - 1, |
efd7398e | 2758 | per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2759 | } |
2760 | ||
efd7398e TT |
2761 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2762 | &per_bfd->obstack); | |
9291a0cd TT |
2763 | } |
2764 | ||
927aa2e7 | 2765 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
efd7398e | 2766 | populate the psymtabs_addrmap. */ |
927aa2e7 JK |
2767 | |
2768 | static void | |
976ca316 | 2769 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2770 | struct dwarf2_section_info *section) |
2771 | { | |
976ca316 | 2772 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2773 | bfd *abfd = objfile->obfd; |
08feed99 | 2774 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2775 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e | 2776 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
2777 | |
2778 | auto_obstack temp_obstack; | |
2779 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2780 | ||
2781 | std::unordered_map<sect_offset, | |
2782 | dwarf2_per_cu_data *, | |
2783 | gdb::hash_enum<sect_offset>> | |
2784 | debug_info_offset_to_per_cu; | |
0d305d5c | 2785 | for (const auto &per_cu : per_bfd->all_comp_units) |
927aa2e7 | 2786 | { |
927aa2e7 | 2787 | const auto insertpair |
0d305d5c TT |
2788 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, |
2789 | per_cu.get ()); | |
927aa2e7 JK |
2790 | if (!insertpair.second) |
2791 | { | |
2792 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2793 | "debug_info_offset %s, ignoring .debug_aranges."), |
2794 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2795 | return; |
2796 | } | |
2797 | } | |
2798 | ||
96b79293 | 2799 | section->read (objfile); |
927aa2e7 JK |
2800 | |
2801 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2802 | ||
2803 | const gdb_byte *addr = section->buffer; | |
2804 | ||
2805 | while (addr < section->buffer + section->size) | |
2806 | { | |
2807 | const gdb_byte *const entry_addr = addr; | |
2808 | unsigned int bytes_read; | |
2809 | ||
2810 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2811 | &bytes_read); | |
2812 | addr += bytes_read; | |
2813 | ||
2814 | const gdb_byte *const entry_end = addr + entry_length; | |
2815 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2816 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2817 | if (addr + entry_length > section->buffer + section->size) | |
2818 | { | |
47e3f474 | 2819 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2820 | "length %s exceeds section length %s, " |
927aa2e7 | 2821 | "ignoring .debug_aranges."), |
47e3f474 TV |
2822 | objfile_name (objfile), |
2823 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2824 | plongest (bytes_read + entry_length), |
2825 | pulongest (section->size)); | |
2826 | return; | |
2827 | } | |
2828 | ||
2829 | /* The version number. */ | |
2830 | const uint16_t version = read_2_bytes (abfd, addr); | |
2831 | addr += 2; | |
2832 | if (version != 2) | |
2833 | { | |
47e3f474 | 2834 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2835 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2836 | objfile_name (objfile), |
2837 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2838 | return; |
2839 | } | |
2840 | ||
2841 | const uint64_t debug_info_offset | |
2842 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2843 | addr += offset_size; | |
2844 | const auto per_cu_it | |
2845 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2846 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2847 | { | |
47e3f474 | 2848 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2849 | "debug_info_offset %s does not exists, " |
2850 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2851 | objfile_name (objfile), |
2852 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2853 | pulongest (debug_info_offset)); |
2854 | return; | |
2855 | } | |
2856 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2857 | ||
2858 | const uint8_t address_size = *addr++; | |
2859 | if (address_size < 1 || address_size > 8) | |
2860 | { | |
47e3f474 | 2861 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2862 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2863 | objfile_name (objfile), |
2864 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2865 | return; |
2866 | } | |
2867 | ||
2868 | const uint8_t segment_selector_size = *addr++; | |
2869 | if (segment_selector_size != 0) | |
2870 | { | |
47e3f474 | 2871 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2872 | "segment_selector_size %u is not supported, " |
2873 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2874 | objfile_name (objfile), |
2875 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2876 | segment_selector_size); |
2877 | return; | |
2878 | } | |
2879 | ||
2880 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2881 | size. It is undocumented by the DWARF standard but GCC does |
2882 | use it. */ | |
927aa2e7 JK |
2883 | for (size_t padding = ((-(addr - section->buffer)) |
2884 | & (2 * address_size - 1)); | |
dda83cd7 | 2885 | padding > 0; padding--) |
927aa2e7 JK |
2886 | if (*addr++ != 0) |
2887 | { | |
47e3f474 | 2888 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2889 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2890 | objfile_name (objfile), |
2891 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2892 | return; |
2893 | } | |
2894 | ||
2895 | for (;;) | |
2896 | { | |
2897 | if (addr + 2 * address_size > entry_end) | |
2898 | { | |
47e3f474 | 2899 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2900 | "address list is not properly terminated, " |
2901 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2902 | objfile_name (objfile), |
2903 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2904 | return; |
2905 | } | |
2906 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2907 | dwarf5_byte_order); | |
2908 | addr += address_size; | |
2909 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2910 | dwarf5_byte_order); | |
2911 | addr += address_size; | |
2912 | if (start == 0 && length == 0) | |
2913 | break; | |
efd7398e | 2914 | if (start == 0 && !per_bfd->has_section_at_zero) |
927aa2e7 JK |
2915 | { |
2916 | /* Symbol was eliminated due to a COMDAT group. */ | |
2917 | continue; | |
2918 | } | |
2919 | ULONGEST end = start + length; | |
79748972 TT |
2920 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2921 | - baseaddr); | |
2922 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2923 | - baseaddr); | |
927aa2e7 JK |
2924 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2925 | } | |
2926 | } | |
2927 | ||
efd7398e TT |
2928 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2929 | &per_bfd->obstack); | |
927aa2e7 JK |
2930 | } |
2931 | ||
4485a1c1 SM |
2932 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2933 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2934 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2935 | ok to use deprecated sections. |
2936 | ||
2937 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2938 | out parameters that are filled in with information about the CU and | |
2939 | TU lists in the section. | |
2940 | ||
4485a1c1 | 2941 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2942 | |
d33bc52e | 2943 | static bool |
3810f182 | 2944 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2945 | bool deprecated_ok, |
2946 | gdb::array_view<const gdb_byte> buffer, | |
2947 | struct mapped_index *map, | |
2948 | const gdb_byte **cu_list, | |
2949 | offset_type *cu_list_elements, | |
2950 | const gdb_byte **types_list, | |
2951 | offset_type *types_list_elements) | |
2952 | { | |
2953 | const gdb_byte *addr = &buffer[0]; | |
42c2c694 | 2954 | offset_view metadata (buffer); |
82430852 | 2955 | |
9291a0cd | 2956 | /* Version check. */ |
42c2c694 | 2957 | offset_type version = metadata[0]; |
987d643c | 2958 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2959 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2960 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2961 | indices. */ |
831adc1f | 2962 | if (version < 4) |
481860b3 GB |
2963 | { |
2964 | static int warning_printed = 0; | |
2965 | if (!warning_printed) | |
2966 | { | |
2967 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2968 | filename); |
481860b3 GB |
2969 | warning_printed = 1; |
2970 | } | |
2971 | return 0; | |
2972 | } | |
2973 | /* Index version 4 uses a different hash function than index version | |
2974 | 5 and later. | |
2975 | ||
2976 | Versions earlier than 6 did not emit psymbols for inlined | |
2977 | functions. Using these files will cause GDB not to be able to | |
2978 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2979 | indices unless the user has done |
2980 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2981 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2982 | { |
2983 | static int warning_printed = 0; | |
2984 | if (!warning_printed) | |
2985 | { | |
e615022a DE |
2986 | warning (_("\ |
2987 | Skipping deprecated .gdb_index section in %s.\n\ | |
2988 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2989 | to use the section anyway."), | |
2ec9a5e0 | 2990 | filename); |
481860b3 GB |
2991 | warning_printed = 1; |
2992 | } | |
2993 | return 0; | |
2994 | } | |
796a7ff8 | 2995 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2996 | of the TU (for symbols coming from TUs), |
2997 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2998 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2999 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3000 | These are just performance bugs, and we can't distinguish gdb-generated | |
3001 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3002 | |
481860b3 | 3003 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3004 | longer backward compatible. */ |
796a7ff8 | 3005 | if (version > 8) |
594e8718 | 3006 | return 0; |
9291a0cd | 3007 | |
559a7a62 | 3008 | map->version = version; |
9291a0cd | 3009 | |
42c2c694 TT |
3010 | int i = 1; |
3011 | *cu_list = addr + metadata[i]; | |
3012 | *cu_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
1fd400ff TT |
3013 | ++i; |
3014 | ||
42c2c694 TT |
3015 | *types_list = addr + metadata[i]; |
3016 | *types_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
987d643c | 3017 | ++i; |
1fd400ff | 3018 | |
42c2c694 TT |
3019 | const gdb_byte *address_table = addr + metadata[i]; |
3020 | const gdb_byte *address_table_end = addr + metadata[i + 1]; | |
f00a2de2 PA |
3021 | map->address_table |
3022 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3023 | ++i; |
3024 | ||
42c2c694 TT |
3025 | const gdb_byte *symbol_table = addr + metadata[i]; |
3026 | const gdb_byte *symbol_table_end = addr + metadata[i + 1]; | |
f00a2de2 | 3027 | map->symbol_table |
42c2c694 TT |
3028 | = offset_view (gdb::array_view<const gdb_byte> (symbol_table, |
3029 | symbol_table_end)); | |
9291a0cd | 3030 | |
f00a2de2 | 3031 | ++i; |
42c2c694 | 3032 | map->constant_pool = buffer.slice (metadata[i]); |
1fd400ff | 3033 | |
2ec9a5e0 TT |
3034 | return 1; |
3035 | } | |
3036 | ||
4485a1c1 SM |
3037 | /* Callback types for dwarf2_read_gdb_index. */ |
3038 | ||
3039 | typedef gdb::function_view | |
5989a64e | 3040 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3041 | get_gdb_index_contents_ftype; |
3042 | typedef gdb::function_view | |
3043 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3044 | get_gdb_index_contents_dwz_ftype; | |
3045 | ||
927aa2e7 | 3046 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3047 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3048 | ||
3049 | static int | |
4485a1c1 | 3050 | dwarf2_read_gdb_index |
976ca316 | 3051 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3052 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3053 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3054 | { |
2ec9a5e0 TT |
3055 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3056 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3057 | struct dwz_file *dwz; |
976ca316 | 3058 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3059 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3060 | |
4485a1c1 | 3061 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3062 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3063 | |
3064 | if (main_index_contents.empty ()) | |
3065 | return 0; | |
3066 | ||
3063847f | 3067 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3068 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3069 | use_deprecated_index_sections, |
3070 | main_index_contents, map.get (), &cu_list, | |
3071 | &cu_list_elements, &types_list, | |
3072 | &types_list_elements)) | |
2ec9a5e0 TT |
3073 | return 0; |
3074 | ||
0fefef59 | 3075 | /* Don't use the index if it's empty. */ |
3063847f | 3076 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3077 | return 0; |
3078 | ||
2ec9a5e0 TT |
3079 | /* If there is a .dwz file, read it so we can get its CU list as |
3080 | well. */ | |
f8c41851 | 3081 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3082 | if (dwz != NULL) |
2ec9a5e0 | 3083 | { |
2ec9a5e0 TT |
3084 | struct mapped_index dwz_map; |
3085 | const gdb_byte *dwz_types_ignore; | |
3086 | offset_type dwz_types_elements_ignore; | |
3087 | ||
4485a1c1 SM |
3088 | gdb::array_view<const gdb_byte> dwz_index_content |
3089 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3090 | ||
3091 | if (dwz_index_content.empty ()) | |
3092 | return 0; | |
3093 | ||
3810f182 | 3094 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3095 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3096 | &dwz_list, &dwz_list_elements, |
3097 | &dwz_types_ignore, | |
3098 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3099 | { |
3100 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3101 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3102 | return 0; |
3103 | } | |
3104 | } | |
3105 | ||
f8c41851 SM |
3106 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3107 | dwz_list_elements); | |
1fd400ff | 3108 | |
8b70b953 TT |
3109 | if (types_list_elements) |
3110 | { | |
8b70b953 TT |
3111 | /* We can only handle a single .debug_types when we have an |
3112 | index. */ | |
f8c41851 | 3113 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3114 | return 0; |
3115 | ||
f8c41851 | 3116 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3117 | |
f8c41851 | 3118 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3119 | types_list_elements); |
8b70b953 | 3120 | } |
9291a0cd | 3121 | |
976ca316 | 3122 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3123 | |
f8c41851 SM |
3124 | per_bfd->index_table = std::move (map); |
3125 | per_bfd->using_index = 1; | |
3126 | per_bfd->quick_file_names_table = | |
3127 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3128 | ||
9291a0cd TT |
3129 | return 1; |
3130 | } | |
3131 | ||
dee91e82 | 3132 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3133 | |
dee91e82 DE |
3134 | static void |
3135 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
3e225074 | 3136 | struct die_info *comp_unit_die) |
9291a0cd | 3137 | { |
dee91e82 | 3138 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3139 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3140 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3141 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3142 | struct attribute *attr; |
7b9f3c50 DE |
3143 | void **slot; |
3144 | struct quick_file_names *qfn; | |
9291a0cd | 3145 | |
0186c6a7 DE |
3146 | gdb_assert (! this_cu->is_debug_types); |
3147 | ||
07261596 TT |
3148 | /* Our callers never want to match partial units -- instead they |
3149 | will match the enclosing full CU. */ | |
3150 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3151 | { | |
3152 | this_cu->v.quick->no_file_data = 1; | |
3153 | return; | |
3154 | } | |
3155 | ||
0186c6a7 | 3156 | lh_cu = this_cu; |
7b9f3c50 | 3157 | slot = NULL; |
dee91e82 | 3158 | |
fff8551c | 3159 | line_header_up lh; |
9c541725 | 3160 | sect_offset line_offset {}; |
fff8551c | 3161 | |
dee91e82 | 3162 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3163 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3164 | { |
7b9f3c50 DE |
3165 | struct quick_file_names find_entry; |
3166 | ||
d4df075e | 3167 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3168 | |
3169 | /* We may have already read in this line header (TU line header sharing). | |
3170 | If we have we're done. */ | |
094b34ac | 3171 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3172 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3173 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3174 | &find_entry, INSERT); |
3175 | if (*slot != NULL) | |
3176 | { | |
9a3c8263 | 3177 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3178 | return; |
7b9f3c50 DE |
3179 | } |
3180 | ||
3019eac3 | 3181 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3182 | } |
3183 | if (lh == NULL) | |
3184 | { | |
094b34ac | 3185 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3186 | return; |
9291a0cd TT |
3187 | } |
3188 | ||
976ca316 | 3189 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3190 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3191 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3192 | gdb_assert (slot != NULL); |
3193 | *slot = qfn; | |
9291a0cd | 3194 | |
d721ba37 | 3195 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3196 | |
aa391654 TT |
3197 | int offset = 0; |
3198 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3199 | ++offset; | |
3200 | ||
7ba99d21 | 3201 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3202 | qfn->file_names = |
976ca316 | 3203 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3204 | qfn->num_file_names); |
aa391654 TT |
3205 | if (offset != 0) |
3206 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3207 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3208 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3209 | fnd.comp_dir).release (); | |
7b9f3c50 | 3210 | qfn->real_names = NULL; |
9291a0cd | 3211 | |
094b34ac | 3212 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3213 | } |
3214 | ||
3215 | /* A helper for the "quick" functions which attempts to read the line | |
3216 | table for THIS_CU. */ | |
3217 | ||
3218 | static struct quick_file_names * | |
ab432490 SM |
3219 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3220 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3221 | { |
0186c6a7 DE |
3222 | /* This should never be called for TUs. */ |
3223 | gdb_assert (! this_cu->is_debug_types); | |
3224 | /* Nor type unit groups. */ | |
197400e8 | 3225 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3226 | |
dee91e82 DE |
3227 | if (this_cu->v.quick->file_names != NULL) |
3228 | return this_cu->v.quick->file_names; | |
3229 | /* If we know there is no line data, no point in looking again. */ | |
3230 | if (this_cu->v.quick->no_file_data) | |
3231 | return NULL; | |
3232 | ||
ab432490 | 3233 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3234 | if (!reader.dummy_p) |
eb5dd737 | 3235 | dw2_get_file_names_reader (&reader, reader.comp_unit_die); |
dee91e82 DE |
3236 | |
3237 | if (this_cu->v.quick->no_file_data) | |
3238 | return NULL; | |
3239 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3240 | } |
3241 | ||
3242 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3243 | real path for a given file name from the line table. */ |
2fdf6df6 | 3244 | |
9291a0cd | 3245 | static const char * |
976ca316 | 3246 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3247 | struct quick_file_names *qfn, int index) |
9291a0cd | 3248 | { |
7b9f3c50 | 3249 | if (qfn->real_names == NULL) |
976ca316 | 3250 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3251 | qfn->num_file_names, const char *); |
9291a0cd | 3252 | |
7b9f3c50 | 3253 | if (qfn->real_names[index] == NULL) |
14278e1f | 3254 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3255 | |
7b9f3c50 | 3256 | return qfn->real_names[index]; |
9291a0cd TT |
3257 | } |
3258 | ||
39298a5d TT |
3259 | struct symtab * |
3260 | dwarf2_base_index_functions::find_last_source_symtab (struct objfile *objfile) | |
9291a0cd | 3261 | { |
976ca316 | 3262 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
0d305d5c TT |
3263 | dwarf2_per_cu_data *dwarf_cu |
3264 | = per_objfile->per_bfd->all_comp_units.back ().get (); | |
976ca316 | 3265 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); |
ae2de4f8 | 3266 | |
43f3e411 DE |
3267 | if (cust == NULL) |
3268 | return NULL; | |
ed2dc618 | 3269 | |
43f3e411 | 3270 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3271 | } |
3272 | ||
7b9f3c50 DE |
3273 | /* Traversal function for dw2_forget_cached_source_info. */ |
3274 | ||
3275 | static int | |
3276 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3277 | { |
7b9f3c50 | 3278 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3279 | |
7b9f3c50 | 3280 | if (file_data->real_names) |
9291a0cd | 3281 | { |
7b9f3c50 | 3282 | int i; |
9291a0cd | 3283 | |
7b9f3c50 | 3284 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3285 | { |
7b9f3c50 DE |
3286 | xfree ((void*) file_data->real_names[i]); |
3287 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3288 | } |
3289 | } | |
7b9f3c50 DE |
3290 | |
3291 | return 1; | |
3292 | } | |
3293 | ||
39298a5d TT |
3294 | void |
3295 | dwarf2_base_index_functions::forget_cached_source_info | |
3296 | (struct objfile *objfile) | |
7b9f3c50 | 3297 | { |
976ca316 | 3298 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3299 | |
976ca316 | 3300 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3301 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3302 | } |
3303 | ||
da51c347 DE |
3304 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3305 | ||
3306 | struct dw2_symtab_iterator | |
9291a0cd | 3307 | { |
ed2dc618 | 3308 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3309 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3310 | /* If set, only look for symbols that match that block. Valid values are |
3311 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3312 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3313 | /* The kind of symbol we're looking for. */ |
3314 | domain_enum domain; | |
3315 | /* The list of CUs from the index entry of the symbol, | |
3316 | or NULL if not found. */ | |
42c2c694 | 3317 | offset_view vec; |
da51c347 DE |
3318 | /* The next element in VEC to look at. */ |
3319 | int next; | |
3320 | /* The number of elements in VEC, or zero if there is no match. */ | |
3321 | int length; | |
8943b874 DE |
3322 | /* Have we seen a global version of the symbol? |
3323 | If so we can ignore all further global instances. | |
3324 | This is to work around gold/15646, inefficient gold-generated | |
3325 | indices. */ | |
3326 | int global_seen; | |
da51c347 | 3327 | }; |
9291a0cd | 3328 | |
7089bd88 | 3329 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ |
2fdf6df6 | 3330 | |
9291a0cd | 3331 | static void |
7089bd88 TT |
3332 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3333 | dwarf2_per_objfile *per_objfile, | |
3334 | gdb::optional<block_enum> block_index, | |
3335 | domain_enum domain, offset_type namei) | |
da51c347 | 3336 | { |
976ca316 | 3337 | iter->per_objfile = per_objfile; |
da51c347 DE |
3338 | iter->block_index = block_index; |
3339 | iter->domain = domain; | |
3340 | iter->next = 0; | |
8943b874 | 3341 | iter->global_seen = 0; |
42c2c694 | 3342 | iter->vec = {}; |
e5f3ece2 | 3343 | iter->length = 0; |
e5f3ece2 TV |
3344 | |
3345 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3346 | /* index is NULL if OBJF_READNOW. */ | |
3347 | if (index == NULL) | |
3348 | return; | |
3349 | ||
3350 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
42c2c694 | 3351 | offset_type vec_idx = index->symbol_vec_index (namei); |
e5f3ece2 | 3352 | |
42c2c694 TT |
3353 | iter->vec = offset_view (index->constant_pool.slice (vec_idx)); |
3354 | iter->length = iter->vec[0]; | |
da51c347 DE |
3355 | } |
3356 | ||
3357 | /* Return the next matching CU or NULL if there are no more. */ | |
3358 | ||
3359 | static struct dwarf2_per_cu_data * | |
3360 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3361 | { | |
976ca316 | 3362 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3363 | |
da51c347 DE |
3364 | for ( ; iter->next < iter->length; ++iter->next) |
3365 | { | |
42c2c694 | 3366 | offset_type cu_index_and_attrs = iter->vec[iter->next + 1]; |
da51c347 | 3367 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); |
da51c347 DE |
3368 | gdb_index_symbol_kind symbol_kind = |
3369 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3370 | /* Only check the symbol attributes if they're present. | |
3371 | Indices prior to version 7 don't record them, | |
3372 | and indices >= 7 may elide them for certain symbols | |
3373 | (gold does this). */ | |
3374 | int attrs_valid = | |
976ca316 | 3375 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3376 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3377 | ||
3190f0c6 | 3378 | /* Don't crash on bad data. */ |
91eea9cc | 3379 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
3190f0c6 | 3380 | { |
b98664d3 | 3381 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3382 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3383 | continue; |
3384 | } | |
3385 | ||
91eea9cc | 3386 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (cu_index); |
3190f0c6 | 3387 | |
da51c347 | 3388 | /* Skip if already read in. */ |
976ca316 | 3389 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3390 | continue; |
3391 | ||
8943b874 DE |
3392 | /* Check static vs global. */ |
3393 | if (attrs_valid) | |
3394 | { | |
2b79f376 SM |
3395 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3396 | ||
3397 | if (iter->block_index.has_value ()) | |
3398 | { | |
3399 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3400 | ||
3401 | if (is_static != want_static) | |
3402 | continue; | |
3403 | } | |
3404 | ||
8943b874 | 3405 | /* Work around gold/15646. */ |
f030440d TV |
3406 | if (!is_static |
3407 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3408 | { | |
3409 | if (iter->global_seen) | |
3410 | continue; | |
3411 | ||
3412 | iter->global_seen = 1; | |
3413 | } | |
8943b874 | 3414 | } |
da51c347 DE |
3415 | |
3416 | /* Only check the symbol's kind if it has one. */ | |
3417 | if (attrs_valid) | |
3418 | { | |
3419 | switch (iter->domain) | |
3420 | { | |
3421 | case VAR_DOMAIN: | |
3422 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3423 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3424 | /* Some types are also in VAR_DOMAIN. */ | |
3425 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3426 | continue; | |
3427 | break; | |
3428 | case STRUCT_DOMAIN: | |
3429 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3430 | continue; | |
3431 | break; | |
3432 | case LABEL_DOMAIN: | |
3433 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3434 | continue; | |
3435 | break; | |
59c35742 AB |
3436 | case MODULE_DOMAIN: |
3437 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3438 | continue; | |
3439 | break; | |
da51c347 DE |
3440 | default: |
3441 | break; | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | ++iter->next; | |
3446 | return per_cu; | |
3447 | } | |
3448 | ||
3449 | return NULL; | |
3450 | } | |
3451 | ||
39298a5d | 3452 | void |
4829711b TT |
3453 | dwarf2_base_index_functions::print_stats (struct objfile *objfile, |
3454 | bool print_bcache) | |
9291a0cd | 3455 | { |
4829711b TT |
3456 | if (print_bcache) |
3457 | return; | |
3458 | ||
976ca316 | 3459 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
91eea9cc | 3460 | int total = per_objfile->per_bfd->all_comp_units.size (); |
ed2dc618 | 3461 | int count = 0; |
9291a0cd | 3462 | |
ed2dc618 | 3463 | for (int i = 0; i < total; ++i) |
9291a0cd | 3464 | { |
91eea9cc | 3465 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (i); |
9291a0cd | 3466 | |
976ca316 | 3467 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3468 | ++count; |
3469 | } | |
e4a48d9d | 3470 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3471 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3472 | } | |
3473 | ||
779bd270 DE |
3474 | /* This dumps minimal information about the index. |
3475 | It is called via "mt print objfiles". | |
3476 | One use is to verify .gdb_index has been loaded by the | |
3477 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3478 | ||
39298a5d TT |
3479 | void |
3480 | dwarf2_gdb_index::dump (struct objfile *objfile) | |
9291a0cd | 3481 | { |
976ca316 | 3482 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3483 | |
976ca316 | 3484 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3485 | printf_filtered (".gdb_index:"); |
976ca316 | 3486 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3487 | { |
3488 | printf_filtered (" version %d\n", | |
976ca316 | 3489 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3490 | } |
3491 | else | |
3492 | printf_filtered (" faked for \"readnow\"\n"); | |
3493 | printf_filtered ("\n"); | |
9291a0cd TT |
3494 | } |
3495 | ||
39298a5d TT |
3496 | void |
3497 | dwarf2_base_index_functions::expand_all_symtabs (struct objfile *objfile) | |
9291a0cd | 3498 | { |
976ca316 | 3499 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
91eea9cc | 3500 | int total_units = per_objfile->per_bfd->all_comp_units.size (); |
9291a0cd | 3501 | |
ed2dc618 | 3502 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3503 | { |
91eea9cc | 3504 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (i); |
9291a0cd | 3505 | |
58f0c718 TT |
3506 | /* We don't want to directly expand a partial CU, because if we |
3507 | read it with the wrong language, then assertion failures can | |
3508 | be triggered later on. See PR symtab/23010. So, tell | |
3509 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3510 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3511 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3512 | } |
3513 | } | |
3514 | ||
df35e626 | 3515 | static bool |
9a0bacfb TV |
3516 | dw2_expand_symtabs_matching_symbol |
3517 | (mapped_index_base &index, | |
3518 | const lookup_name_info &lookup_name_in, | |
3519 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3520 | gdb::function_view<bool (offset_type)> match_callback, |
3521 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb | 3522 | |
df35e626 | 3523 | static bool |
9a0bacfb | 3524 | dw2_expand_symtabs_matching_one |
97a1449a SM |
3525 | (dwarf2_per_cu_data *per_cu, |
3526 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3527 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3528 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3529 | ||
af82f89d | 3530 | void |
0b7b2c2a | 3531 | dwarf2_gdb_index::expand_matching_symbols |
199b4314 | 3532 | (struct objfile *objfile, |
b054970d | 3533 | const lookup_name_info &name, domain_enum domain, |
199b4314 | 3534 | int global, |
199b4314 | 3535 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3536 | { |
1aa98955 | 3537 | /* Used for Ada. */ |
976ca316 | 3538 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3539 | |
9a0bacfb TV |
3540 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3541 | ||
976ca316 | 3542 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3543 | { |
976ca316 | 3544 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3545 | |
9a0bacfb TV |
3546 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3547 | auto matcher = [&] (const char *symname) | |
3548 | { | |
3549 | if (ordered_compare == nullptr) | |
3550 | return true; | |
3551 | return ordered_compare (symname, match_name) == 0; | |
3552 | }; | |
3553 | ||
b64f703b | 3554 | dw2_expand_symtabs_matching_symbol (index, name, matcher, |
9a0bacfb TV |
3555 | [&] (offset_type namei) |
3556 | { | |
3557 | struct dw2_symtab_iterator iter; | |
3558 | struct dwarf2_per_cu_data *per_cu; | |
3559 | ||
976ca316 | 3560 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3561 | namei); |
9a0bacfb | 3562 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3563 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3564 | nullptr); |
9a0bacfb | 3565 | return true; |
976ca316 | 3566 | }, per_objfile); |
9a0bacfb TV |
3567 | } |
3568 | else | |
3569 | { | |
3570 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3571 | proceed assuming all symtabs have been read in. */ | |
3572 | } | |
9291a0cd TT |
3573 | } |
3574 | ||
e1ef7d7a PA |
3575 | /* Starting from a search name, return the string that finds the upper |
3576 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3577 | list. Returns the empty string to indicate that the upper bound is | |
3578 | the end of the list. */ | |
3579 | ||
3580 | static std::string | |
3581 | make_sort_after_prefix_name (const char *search_name) | |
3582 | { | |
3583 | /* When looking to complete "func", we find the upper bound of all | |
3584 | symbols that start with "func" by looking for where we'd insert | |
3585 | the closest string that would follow "func" in lexicographical | |
3586 | order. Usually, that's "func"-with-last-character-incremented, | |
3587 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3588 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3589 | Especially mind the 0xff character, which is a valid character in | |
3590 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3591 | rule out compilers allowing it in identifiers. Note that | |
3592 | conveniently, strcmp/strcasecmp are specified to compare | |
3593 | characters interpreted as unsigned char. So what we do is treat | |
3594 | the whole string as a base 256 number composed of a sequence of | |
3595 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3596 | to 0, and carries 1 to the following more-significant position. | |
3597 | If the very first character in SEARCH_NAME ends up incremented | |
3598 | and carries/overflows, then the upper bound is the end of the | |
3599 | list. The string after the empty string is also the empty | |
3600 | string. | |
3601 | ||
3602 | Some examples of this operation: | |
3603 | ||
3604 | SEARCH_NAME => "+1" RESULT | |
3605 | ||
3606 | "abc" => "abd" | |
3607 | "ab\xff" => "ac" | |
3608 | "\xff" "a" "\xff" => "\xff" "b" | |
3609 | "\xff" => "" | |
3610 | "\xff\xff" => "" | |
3611 | "" => "" | |
3612 | ||
3613 | Then, with these symbols for example: | |
3614 | ||
3615 | func | |
3616 | func1 | |
3617 | fund | |
3618 | ||
3619 | completing "func" looks for symbols between "func" and | |
3620 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3621 | which finds "func" and "func1", but not "fund". | |
3622 | ||
3623 | And with: | |
3624 | ||
3625 | funcÿ (Latin1 'ÿ' [0xff]) | |
3626 | funcÿ1 | |
3627 | fund | |
3628 | ||
3629 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3630 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3631 | ||
3632 | And with: | |
3633 | ||
3634 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3635 | ÿÿ1 | |
3636 | ||
3637 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3638 | the end of the list. | |
3639 | */ | |
3640 | std::string after = search_name; | |
3641 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3642 | after.pop_back (); | |
3643 | if (!after.empty ()) | |
3644 | after.back () = (unsigned char) after.back () + 1; | |
3645 | return after; | |
3646 | } | |
3647 | ||
5c58de74 | 3648 | /* See declaration. */ |
61d96d7e | 3649 | |
5c58de74 PA |
3650 | std::pair<std::vector<name_component>::const_iterator, |
3651 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3652 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3653 | (const lookup_name_info &lookup_name_without_params, language lang, |
3654 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3655 | { |
5c58de74 PA |
3656 | auto *name_cmp |
3657 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3658 | |
3b00ef10 | 3659 | const char *lang_name |
e0802d59 | 3660 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3661 | |
3f563c84 PA |
3662 | /* Comparison function object for lower_bound that matches against a |
3663 | given symbol name. */ | |
3664 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3665 | const char *name) | |
3666 | { | |
fcf23d5b | 3667 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3668 | const char *elem_name = elem_qualified + elem.name_offset; |
3669 | return name_cmp (elem_name, name) < 0; | |
3670 | }; | |
3671 | ||
3672 | /* Comparison function object for upper_bound that matches against a | |
3673 | given symbol name. */ | |
3674 | auto lookup_compare_upper = [&] (const char *name, | |
3675 | const name_component &elem) | |
3676 | { | |
fcf23d5b | 3677 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3678 | const char *elem_name = elem_qualified + elem.name_offset; |
3679 | return name_cmp (name, elem_name) < 0; | |
3680 | }; | |
3681 | ||
5c58de74 PA |
3682 | auto begin = this->name_components.begin (); |
3683 | auto end = this->name_components.end (); | |
3f563c84 PA |
3684 | |
3685 | /* Find the lower bound. */ | |
3686 | auto lower = [&] () | |
3687 | { | |
3b00ef10 | 3688 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3689 | return begin; |
3690 | else | |
3b00ef10 | 3691 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3692 | } (); |
3693 | ||
3694 | /* Find the upper bound. */ | |
3695 | auto upper = [&] () | |
3696 | { | |
5c58de74 | 3697 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3698 | { |
e1ef7d7a PA |
3699 | /* In completion mode, we want UPPER to point past all |
3700 | symbols names that have the same prefix. I.e., with | |
3701 | these symbols, and completing "func": | |
3702 | ||
3703 | function << lower bound | |
3704 | function1 | |
3705 | other_function << upper bound | |
3706 | ||
3707 | We find the upper bound by looking for the insertion | |
3708 | point of "func"-with-last-character-incremented, | |
3709 | i.e. "fund". */ | |
3b00ef10 | 3710 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3711 | if (after.empty ()) |
3f563c84 | 3712 | return end; |
e6b2f5ef PA |
3713 | return std::lower_bound (lower, end, after.c_str (), |
3714 | lookup_compare_lower); | |
3f563c84 PA |
3715 | } |
3716 | else | |
3b00ef10 | 3717 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3718 | } (); |
3719 | ||
5c58de74 PA |
3720 | return {lower, upper}; |
3721 | } | |
3722 | ||
3723 | /* See declaration. */ | |
3724 | ||
3725 | void | |
fcf23d5b | 3726 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3727 | { |
3728 | if (!this->name_components.empty ()) | |
3729 | return; | |
3730 | ||
3731 | this->name_components_casing = case_sensitivity; | |
3732 | auto *name_cmp | |
3733 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3734 | ||
3735 | /* The code below only knows how to break apart components of C++ | |
3736 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3737 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3738 | auto count = this->symbol_name_count (); |
3739 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3740 | { |
44ed8f3e | 3741 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3742 | continue; |
3743 | ||
fcf23d5b | 3744 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3745 | |
3746 | /* Add each name component to the name component table. */ | |
3747 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3748 | |
3749 | if (strstr (name, "::") != nullptr) | |
3750 | { | |
3751 | for (unsigned int current_len = cp_find_first_component (name); | |
3752 | name[current_len] != '\0'; | |
3753 | current_len += cp_find_first_component (name + current_len)) | |
3754 | { | |
3755 | gdb_assert (name[current_len] == ':'); | |
3756 | this->name_components.push_back ({previous_len, idx}); | |
3757 | /* Skip the '::'. */ | |
3758 | current_len += 2; | |
3759 | previous_len = current_len; | |
3760 | } | |
3761 | } | |
3762 | else | |
5c58de74 | 3763 | { |
3b00ef10 TT |
3764 | /* Handle the Ada encoded (aka mangled) form here. */ |
3765 | for (const char *iter = strstr (name, "__"); | |
3766 | iter != nullptr; | |
3767 | iter = strstr (iter, "__")) | |
3768 | { | |
3769 | this->name_components.push_back ({previous_len, idx}); | |
3770 | iter += 2; | |
3771 | previous_len = iter - name; | |
3772 | } | |
5c58de74 | 3773 | } |
3b00ef10 | 3774 | |
5c58de74 PA |
3775 | this->name_components.push_back ({previous_len, idx}); |
3776 | } | |
3777 | ||
3778 | /* Sort name_components elements by name. */ | |
3779 | auto name_comp_compare = [&] (const name_component &left, | |
3780 | const name_component &right) | |
3781 | { | |
fcf23d5b SM |
3782 | const char *left_qualified |
3783 | = this->symbol_name_at (left.idx, per_objfile); | |
3784 | const char *right_qualified | |
3785 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
3786 | |
3787 | const char *left_name = left_qualified + left.name_offset; | |
3788 | const char *right_name = right_qualified + right.name_offset; | |
3789 | ||
3790 | return name_cmp (left_name, right_name) < 0; | |
3791 | }; | |
3792 | ||
3793 | std::sort (this->name_components.begin (), | |
3794 | this->name_components.end (), | |
3795 | name_comp_compare); | |
3796 | } | |
3797 | ||
3798 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3799 | mapped_index_base instead of the containing objfile. This is split |
3800 | to a separate function in order to be able to unit test the | |
3801 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3802 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3803 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 | 3804 | |
df35e626 | 3805 | static bool |
5c58de74 | 3806 | dw2_expand_symtabs_matching_symbol |
44ed8f3e | 3807 | (mapped_index_base &index, |
5c58de74 PA |
3808 | const lookup_name_info &lookup_name_in, |
3809 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3810 | gdb::function_view<bool (offset_type)> match_callback, |
3811 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
3812 | { |
3813 | lookup_name_info lookup_name_without_params | |
3814 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3815 | |
3816 | /* Build the symbol name component sorted vector, if we haven't | |
3817 | yet. */ | |
fcf23d5b | 3818 | index.build_name_components (per_objfile); |
5c58de74 | 3819 | |
3f563c84 PA |
3820 | /* The same symbol may appear more than once in the range though. |
3821 | E.g., if we're looking for symbols that complete "w", and we have | |
3822 | a symbol named "w1::w2", we'll find the two name components for | |
3823 | that same symbol in the range. To be sure we only call the | |
3824 | callback once per symbol, we first collect the symbol name | |
3825 | indexes that matched in a temporary vector and ignore | |
3826 | duplicates. */ | |
3827 | std::vector<offset_type> matches; | |
3f563c84 | 3828 | |
3b00ef10 TT |
3829 | struct name_and_matcher |
3830 | { | |
3831 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 3832 | const char *name; |
3b00ef10 TT |
3833 | |
3834 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3835 | { |
ecc6c606 | 3836 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
3837 | } |
3838 | }; | |
3839 | ||
3840 | /* A vector holding all the different symbol name matchers, for all | |
3841 | languages. */ | |
3842 | std::vector<name_and_matcher> matchers; | |
3843 | ||
3844 | for (int i = 0; i < nr_languages; i++) | |
3845 | { | |
3846 | enum language lang_e = (enum language) i; | |
3847 | ||
3848 | const language_defn *lang = language_def (lang_e); | |
3849 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 3850 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 3851 | |
3b00ef10 | 3852 | name_and_matcher key { |
dda83cd7 | 3853 | name_matcher, |
3b00ef10 TT |
3854 | lookup_name_without_params.language_lookup_name (lang_e) |
3855 | }; | |
3856 | ||
3857 | /* Don't insert the same comparison routine more than once. | |
3858 | Note that we do this linear walk. This is not a problem in | |
3859 | practice because the number of supported languages is | |
3860 | low. */ | |
3861 | if (std::find (matchers.begin (), matchers.end (), key) | |
3862 | != matchers.end ()) | |
9291a0cd | 3863 | continue; |
3b00ef10 TT |
3864 | matchers.push_back (std::move (key)); |
3865 | ||
3866 | auto bounds | |
3867 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 3868 | lang_e, per_objfile); |
3b00ef10 TT |
3869 | |
3870 | /* Now for each symbol name in range, check to see if we have a name | |
3871 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3872 | ||
3873 | for (; bounds.first != bounds.second; ++bounds.first) | |
3874 | { | |
fcf23d5b SM |
3875 | const char *qualified |
3876 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
3877 | |
3878 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3879 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3880 | continue; | |
9291a0cd | 3881 | |
3b00ef10 TT |
3882 | matches.push_back (bounds.first->idx); |
3883 | } | |
3f563c84 PA |
3884 | } |
3885 | ||
3886 | std::sort (matches.begin (), matches.end ()); | |
3887 | ||
3888 | /* Finally call the callback, once per match. */ | |
3889 | ULONGEST prev = -1; | |
df35e626 | 3890 | bool result = true; |
3f563c84 PA |
3891 | for (offset_type idx : matches) |
3892 | { | |
3893 | if (prev != idx) | |
3894 | { | |
3b00ef10 | 3895 | if (!match_callback (idx)) |
df35e626 TT |
3896 | { |
3897 | result = false; | |
3898 | break; | |
3899 | } | |
3f563c84 PA |
3900 | prev = idx; |
3901 | } | |
3902 | } | |
3903 | ||
3904 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3905 | (offset_type)-1 are both possible values. */ | |
3906 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
df35e626 TT |
3907 | |
3908 | return result; | |
3f563c84 PA |
3909 | } |
3910 | ||
c62446b1 PA |
3911 | #if GDB_SELF_TEST |
3912 | ||
3913 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3914 | ||
a3c5fafd PA |
3915 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3916 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3917 | mapped_index_base interface. Builds an index from the symbol list | |
3918 | passed as parameter to the constructor. */ | |
3919 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3920 | { |
3921 | public: | |
a3c5fafd PA |
3922 | mock_mapped_index (gdb::array_view<const char *> symbols) |
3923 | : m_symbol_table (symbols) | |
c62446b1 PA |
3924 | {} |
3925 | ||
a3c5fafd | 3926 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 3927 | |
a3c5fafd | 3928 | /* Return the number of names in the symbol table. */ |
632e107b | 3929 | size_t symbol_name_count () const override |
c62446b1 | 3930 | { |
a3c5fafd | 3931 | return m_symbol_table.size (); |
c62446b1 PA |
3932 | } |
3933 | ||
a3c5fafd | 3934 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
3935 | const char *symbol_name_at |
3936 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
3937 | { |
3938 | return m_symbol_table[idx]; | |
3939 | } | |
c62446b1 | 3940 | |
a3c5fafd PA |
3941 | private: |
3942 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
3943 | }; |
3944 | ||
3945 | /* Convenience function that converts a NULL pointer to a "<null>" | |
3946 | string, to pass to print routines. */ | |
3947 | ||
3948 | static const char * | |
3949 | string_or_null (const char *str) | |
3950 | { | |
3951 | return str != NULL ? str : "<null>"; | |
3952 | } | |
3953 | ||
3954 | /* Check if a lookup_name_info built from | |
3955 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
3956 | index. EXPECTED_LIST is the list of expected matches, in expected | |
3957 | matching order. If no match expected, then an empty list is | |
3958 | specified. Returns true on success. On failure prints a warning | |
3959 | indicating the file:line that failed, and returns false. */ | |
3960 | ||
3961 | static bool | |
3962 | check_match (const char *file, int line, | |
3963 | mock_mapped_index &mock_index, | |
3964 | const char *name, symbol_name_match_type match_type, | |
3965 | bool completion_mode, | |
fcf23d5b SM |
3966 | std::initializer_list<const char *> expected_list, |
3967 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
3968 | { |
3969 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
3970 | ||
3971 | bool matched = true; | |
3972 | ||
3973 | auto mismatch = [&] (const char *expected_str, | |
3974 | const char *got) | |
3975 | { | |
3976 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
3977 | "expected=\"%s\", got=\"%s\"\n"), | |
3978 | file, line, | |
3979 | (match_type == symbol_name_match_type::FULL | |
3980 | ? "FULL" : "WILD"), | |
3981 | name, string_or_null (expected_str), string_or_null (got)); | |
3982 | matched = false; | |
3983 | }; | |
3984 | ||
3985 | auto expected_it = expected_list.begin (); | |
3986 | auto expected_end = expected_list.end (); | |
3987 | ||
a3c5fafd | 3988 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
b64f703b | 3989 | nullptr, |
c62446b1 PA |
3990 | [&] (offset_type idx) |
3991 | { | |
fcf23d5b | 3992 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
3993 | const char *expected_str |
3994 | = expected_it == expected_end ? NULL : *expected_it++; | |
3995 | ||
3996 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
3997 | mismatch (expected_str, matched_name); | |
3b00ef10 | 3998 | return true; |
fcf23d5b | 3999 | }, per_objfile); |
c62446b1 PA |
4000 | |
4001 | const char *expected_str | |
4002 | = expected_it == expected_end ? NULL : *expected_it++; | |
4003 | if (expected_str != NULL) | |
4004 | mismatch (expected_str, NULL); | |
4005 | ||
4006 | return matched; | |
4007 | } | |
4008 | ||
4009 | /* The symbols added to the mock mapped_index for testing (in | |
4010 | canonical form). */ | |
4011 | static const char *test_symbols[] = { | |
4012 | "function", | |
4013 | "std::bar", | |
4014 | "std::zfunction", | |
4015 | "std::zfunction2", | |
4016 | "w1::w2", | |
4017 | "ns::foo<char*>", | |
4018 | "ns::foo<int>", | |
4019 | "ns::foo<long>", | |
a20714ff PA |
4020 | "ns2::tmpl<int>::foo2", |
4021 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4022 | |
e1ef7d7a PA |
4023 | /* These are used to check that the increment-last-char in the |
4024 | matching algorithm for completion doesn't match "t1_fund" when | |
4025 | completing "t1_func". */ | |
4026 | "t1_func", | |
4027 | "t1_func1", | |
4028 | "t1_fund", | |
4029 | "t1_fund1", | |
4030 | ||
4031 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4032 | cp-name-parser understands this as a single identifier ("função" | |
4033 | is "function" in PT). */ | |
4034 | u8"u8função", | |
4035 | ||
4036 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4037 | "yfunc\377", | |
4038 | ||
4039 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4040 | "\377", | |
4041 | "\377\377123", | |
4042 | ||
c62446b1 PA |
4043 | /* A name with all sorts of complications. Starts with "z" to make |
4044 | it easier for the completion tests below. */ | |
4045 | #define Z_SYM_NAME \ | |
4046 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4047 | "::tuple<(anonymous namespace)::ui*, " \ | |
4048 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4049 | ||
4050 | Z_SYM_NAME | |
4051 | }; | |
4052 | ||
a3c5fafd PA |
4053 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4054 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4055 | in completion mode. */ | |
5c58de74 PA |
4056 | |
4057 | static bool | |
a3c5fafd | 4058 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4059 | const char *search_name, |
fcf23d5b SM |
4060 | gdb::array_view<const char *> expected_syms, |
4061 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4062 | { |
4063 | lookup_name_info lookup_name (search_name, | |
4064 | symbol_name_match_type::FULL, true); | |
4065 | ||
3b00ef10 | 4066 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4067 | language_cplus, |
4068 | per_objfile); | |
5c58de74 PA |
4069 | |
4070 | size_t distance = std::distance (bounds.first, bounds.second); | |
4071 | if (distance != expected_syms.size ()) | |
4072 | return false; | |
4073 | ||
4074 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4075 | { | |
4076 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4077 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4078 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4079 | return false; | |
4080 | } | |
4081 | ||
4082 | return true; | |
4083 | } | |
4084 | ||
4085 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4086 | method. */ | |
4087 | ||
c62446b1 | 4088 | static void |
5c58de74 PA |
4089 | test_mapped_index_find_name_component_bounds () |
4090 | { | |
4091 | mock_mapped_index mock_index (test_symbols); | |
4092 | ||
fcf23d5b | 4093 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4094 | |
4095 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4096 | method in completion mode. */ | |
4097 | { | |
4098 | static const char *expected_syms[] = { | |
4099 | "t1_func", | |
4100 | "t1_func1", | |
5c58de74 PA |
4101 | }; |
4102 | ||
fcf23d5b SM |
4103 | SELF_CHECK (check_find_bounds_finds |
4104 | (mock_index, "t1_func", expected_syms, | |
4105 | NULL /* per_objfile */)); | |
5c58de74 PA |
4106 | } |
4107 | ||
4108 | /* Check that the increment-last-char in the name matching algorithm | |
4109 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4110 | { | |
4111 | static const char *expected_syms1[] = { | |
4112 | "\377", | |
4113 | "\377\377123", | |
4114 | }; | |
fcf23d5b SM |
4115 | SELF_CHECK (check_find_bounds_finds |
4116 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4117 | |
4118 | static const char *expected_syms2[] = { | |
4119 | "\377\377123", | |
4120 | }; | |
fcf23d5b SM |
4121 | SELF_CHECK (check_find_bounds_finds |
4122 | (mock_index, "\377\377", expected_syms2, | |
4123 | NULL /* per_objfile */)); | |
5c58de74 PA |
4124 | } |
4125 | } | |
4126 | ||
4127 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4128 | ||
4129 | static void | |
4130 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4131 | { |
4132 | mock_mapped_index mock_index (test_symbols); | |
4133 | ||
4134 | /* We let all tests run until the end even if some fails, for debug | |
4135 | convenience. */ | |
4136 | bool any_mismatch = false; | |
4137 | ||
4138 | /* Create the expected symbols list (an initializer_list). Needed | |
4139 | because lists have commas, and we need to pass them to CHECK, | |
4140 | which is a macro. */ | |
4141 | #define EXPECT(...) { __VA_ARGS__ } | |
4142 | ||
4143 | /* Wrapper for check_match that passes down the current | |
4144 | __FILE__/__LINE__. */ | |
4145 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4146 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4147 | mock_index, \ | |
4148 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4149 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4150 | |
4151 | /* Identity checks. */ | |
4152 | for (const char *sym : test_symbols) | |
4153 | { | |
4154 | /* Should be able to match all existing symbols. */ | |
4155 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4156 | EXPECT (sym)); | |
4157 | ||
4158 | /* Should be able to match all existing symbols with | |
4159 | parameters. */ | |
4160 | std::string with_params = std::string (sym) + "(int)"; | |
4161 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4162 | EXPECT (sym)); | |
4163 | ||
4164 | /* Should be able to match all existing symbols with | |
4165 | parameters and qualifiers. */ | |
4166 | with_params = std::string (sym) + " ( int ) const"; | |
4167 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4168 | EXPECT (sym)); | |
4169 | ||
4170 | /* This should really find sym, but cp-name-parser.y doesn't | |
4171 | know about lvalue/rvalue qualifiers yet. */ | |
4172 | with_params = std::string (sym) + " ( int ) &&"; | |
4173 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4174 | {}); | |
4175 | } | |
4176 | ||
e1ef7d7a PA |
4177 | /* Check that the name matching algorithm for completion doesn't get |
4178 | confused with Latin1 'ÿ' / 0xff. */ | |
4179 | { | |
4180 | static const char str[] = "\377"; | |
4181 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4182 | EXPECT ("\377", "\377\377123")); | |
4183 | } | |
4184 | ||
4185 | /* Check that the increment-last-char in the matching algorithm for | |
4186 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4187 | { | |
4188 | static const char str[] = "t1_func"; | |
4189 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4190 | EXPECT ("t1_func", "t1_func1")); | |
4191 | } | |
4192 | ||
c62446b1 PA |
4193 | /* Check that completion mode works at each prefix of the expected |
4194 | symbol name. */ | |
4195 | { | |
4196 | static const char str[] = "function(int)"; | |
4197 | size_t len = strlen (str); | |
4198 | std::string lookup; | |
4199 | ||
4200 | for (size_t i = 1; i < len; i++) | |
4201 | { | |
4202 | lookup.assign (str, i); | |
4203 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4204 | EXPECT ("function")); | |
4205 | } | |
4206 | } | |
4207 | ||
4208 | /* While "w" is a prefix of both components, the match function | |
4209 | should still only be called once. */ | |
4210 | { | |
4211 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4212 | EXPECT ("w1::w2")); | |
a20714ff PA |
4213 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4214 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4215 | } |
4216 | ||
4217 | /* Same, with a "complicated" symbol. */ | |
4218 | { | |
4219 | static const char str[] = Z_SYM_NAME; | |
4220 | size_t len = strlen (str); | |
4221 | std::string lookup; | |
4222 | ||
4223 | for (size_t i = 1; i < len; i++) | |
4224 | { | |
4225 | lookup.assign (str, i); | |
4226 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4227 | EXPECT (Z_SYM_NAME)); | |
4228 | } | |
4229 | } | |
4230 | ||
4231 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4232 | { | |
4233 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4234 | {}); | |
4235 | } | |
4236 | ||
4237 | /* A complete symbol with parameters matches any overload, since the | |
4238 | index has no overload info. */ | |
4239 | { | |
4240 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4241 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4242 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4243 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4244 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4245 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4246 | } |
4247 | ||
4248 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4249 | template argument list. */ | |
4250 | { | |
4251 | static const char expected[] = "ns::foo<int>"; | |
4252 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4253 | EXPECT (expected)); | |
a20714ff PA |
4254 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4255 | EXPECT (expected)); | |
c62446b1 PA |
4256 | } |
4257 | ||
4258 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4259 | template argument list that includes a pointer. */ | |
4260 | { | |
4261 | static const char expected[] = "ns::foo<char*>"; | |
4262 | /* Try both completion and non-completion modes. */ | |
4263 | static const bool completion_mode[2] = {false, true}; | |
4264 | for (size_t i = 0; i < 2; i++) | |
4265 | { | |
4266 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4267 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4268 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4269 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4270 | |
4271 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4272 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4273 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4274 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4275 | } |
4276 | } | |
4277 | ||
4278 | { | |
4279 | /* Check method qualifiers are ignored. */ | |
4280 | static const char expected[] = "ns::foo<char*>"; | |
4281 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4282 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4283 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4284 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4285 | CHECK_MATCH ("foo < char * > ( int ) const", |
4286 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4287 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4288 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4289 | } |
4290 | ||
4291 | /* Test lookup names that don't match anything. */ | |
4292 | { | |
a20714ff PA |
4293 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4294 | {}); | |
4295 | ||
c62446b1 PA |
4296 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4297 | {}); | |
4298 | } | |
4299 | ||
a20714ff PA |
4300 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4301 | which should not be confused with a parameter list. */ | |
4302 | { | |
4303 | static const char *syms[] = { | |
4304 | "A::B::C", | |
4305 | "B::C", | |
4306 | "C", | |
4307 | "A :: B :: C ( int )", | |
4308 | "B :: C ( int )", | |
4309 | "C ( int )", | |
4310 | }; | |
4311 | ||
4312 | for (const char *s : syms) | |
4313 | { | |
4314 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4315 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4316 | } | |
4317 | } | |
4318 | ||
4319 | { | |
4320 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4321 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4322 | EXPECT (expected)); | |
4323 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4324 | EXPECT (expected)); | |
4325 | } | |
4326 | ||
c62446b1 PA |
4327 | SELF_CHECK (!any_mismatch); |
4328 | ||
4329 | #undef EXPECT | |
4330 | #undef CHECK_MATCH | |
4331 | } | |
4332 | ||
5c58de74 PA |
4333 | static void |
4334 | run_test () | |
4335 | { | |
4336 | test_mapped_index_find_name_component_bounds (); | |
4337 | test_dw2_expand_symtabs_matching_symbol (); | |
4338 | } | |
4339 | ||
c62446b1 PA |
4340 | }} // namespace selftests::dw2_expand_symtabs_matching |
4341 | ||
4342 | #endif /* GDB_SELF_TEST */ | |
4343 | ||
4b514bc8 JK |
4344 | /* If FILE_MATCHER is NULL or if PER_CU has |
4345 | dwarf2_per_cu_quick_data::MARK set (see | |
4346 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4347 | EXPANSION_NOTIFY on it. */ | |
4348 | ||
df35e626 | 4349 | static bool |
4b514bc8 | 4350 | dw2_expand_symtabs_matching_one |
97a1449a SM |
4351 | (dwarf2_per_cu_data *per_cu, |
4352 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4353 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4354 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4355 | { | |
4356 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4357 | { | |
af758d11 | 4358 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4359 | |
97a1449a SM |
4360 | compunit_symtab *symtab |
4361 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4362 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4363 | |
af758d11 | 4364 | if (expansion_notify != NULL && symtab_was_null) |
df35e626 | 4365 | return expansion_notify (symtab); |
4b514bc8 | 4366 | } |
df35e626 | 4367 | return true; |
4b514bc8 JK |
4368 | } |
4369 | ||
3f563c84 PA |
4370 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4371 | matched, to expand corresponding CUs that were marked. IDX is the | |
4372 | index of the symbol name that matched. */ | |
4373 | ||
df35e626 | 4374 | static bool |
3f563c84 | 4375 | dw2_expand_marked_cus |
976ca316 | 4376 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4377 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4378 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4379 | block_search_flags search_flags, |
3f563c84 PA |
4380 | search_domain kind) |
4381 | { | |
42c2c694 | 4382 | offset_type vec_len, vec_idx; |
3f563c84 | 4383 | bool global_seen = false; |
976ca316 | 4384 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4385 | |
42c2c694 TT |
4386 | offset_view vec (index.constant_pool.slice (index.symbol_vec_index (idx))); |
4387 | vec_len = vec[0]; | |
61920122 PA |
4388 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) |
4389 | { | |
42c2c694 | 4390 | offset_type cu_index_and_attrs = vec[vec_idx + 1]; |
61920122 PA |
4391 | /* This value is only valid for index versions >= 7. */ |
4392 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4393 | gdb_index_symbol_kind symbol_kind = | |
4394 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4395 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4396 | /* Only check the symbol attributes if they're present. | |
4397 | Indices prior to version 7 don't record them, | |
4398 | and indices >= 7 may elide them for certain symbols | |
4399 | (gold does this). */ | |
4400 | int attrs_valid = | |
4401 | (index.version >= 7 | |
4402 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4403 | ||
4404 | /* Work around gold/15646. */ | |
f030440d TV |
4405 | if (attrs_valid |
4406 | && !is_static | |
4407 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4408 | { |
f030440d | 4409 | if (global_seen) |
61920122 | 4410 | continue; |
f030440d TV |
4411 | |
4412 | global_seen = true; | |
61920122 | 4413 | } |
3190f0c6 | 4414 | |
61920122 PA |
4415 | /* Only check the symbol's kind if it has one. */ |
4416 | if (attrs_valid) | |
4417 | { | |
03a8ea51 TT |
4418 | if (is_static) |
4419 | { | |
4420 | if ((search_flags & SEARCH_STATIC_BLOCK) == 0) | |
4421 | continue; | |
4422 | } | |
4423 | else | |
4424 | { | |
4425 | if ((search_flags & SEARCH_GLOBAL_BLOCK) == 0) | |
4426 | continue; | |
4427 | } | |
4428 | ||
61920122 | 4429 | switch (kind) |
8943b874 | 4430 | { |
61920122 PA |
4431 | case VARIABLES_DOMAIN: |
4432 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4433 | continue; | |
4434 | break; | |
4435 | case FUNCTIONS_DOMAIN: | |
4436 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4437 | continue; |
61920122 PA |
4438 | break; |
4439 | case TYPES_DOMAIN: | |
4440 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4441 | continue; | |
4442 | break; | |
59c35742 AB |
4443 | case MODULES_DOMAIN: |
4444 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4445 | continue; | |
4446 | break; | |
61920122 PA |
4447 | default: |
4448 | break; | |
8943b874 | 4449 | } |
61920122 | 4450 | } |
8943b874 | 4451 | |
61920122 | 4452 | /* Don't crash on bad data. */ |
91eea9cc | 4453 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
61920122 | 4454 | { |
b98664d3 | 4455 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4456 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4457 | continue; |
4458 | } | |
4459 | ||
91eea9cc | 4460 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (cu_index); |
df35e626 TT |
4461 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
4462 | expansion_notify)) | |
4463 | return false; | |
61920122 | 4464 | } |
df35e626 TT |
4465 | |
4466 | return true; | |
61920122 PA |
4467 | } |
4468 | ||
4b514bc8 JK |
4469 | /* If FILE_MATCHER is non-NULL, set all the |
4470 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4471 | that match FILE_MATCHER. */ | |
4472 | ||
61920122 | 4473 | static void |
4b514bc8 | 4474 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4475 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4476 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4477 | { |
4b514bc8 | 4478 | if (file_matcher == NULL) |
61920122 PA |
4479 | return; |
4480 | ||
4b514bc8 JK |
4481 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4482 | htab_eq_pointer, | |
4483 | NULL, xcalloc, xfree)); | |
4484 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4485 | htab_eq_pointer, |
4486 | NULL, xcalloc, xfree)); | |
61920122 | 4487 | |
4b514bc8 JK |
4488 | /* The rule is CUs specify all the files, including those used by |
4489 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4490 | |
0d305d5c | 4491 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4492 | { |
927aa2e7 JK |
4493 | QUIT; |
4494 | ||
91eea9cc TT |
4495 | if (per_cu->is_debug_types) |
4496 | continue; | |
927aa2e7 JK |
4497 | per_cu->v.quick->mark = 0; |
4498 | ||
4499 | /* We only need to look at symtabs not already expanded. */ | |
0d305d5c | 4500 | if (per_objfile->symtab_set_p (per_cu.get ())) |
927aa2e7 JK |
4501 | continue; |
4502 | ||
0d305d5c TT |
4503 | quick_file_names *file_data = dw2_get_file_names (per_cu.get (), |
4504 | per_objfile); | |
927aa2e7 JK |
4505 | if (file_data == NULL) |
4506 | continue; | |
4507 | ||
4508 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4509 | continue; | |
4510 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4511 | { | |
4512 | per_cu->v.quick->mark = 1; | |
4513 | continue; | |
4514 | } | |
4515 | ||
b76e467d | 4516 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4517 | { |
4518 | const char *this_real_name; | |
4519 | ||
4520 | if (file_matcher (file_data->file_names[j], false)) | |
4521 | { | |
4522 | per_cu->v.quick->mark = 1; | |
4523 | break; | |
4524 | } | |
4525 | ||
4526 | /* Before we invoke realpath, which can get expensive when many | |
4527 | files are involved, do a quick comparison of the basenames. */ | |
4528 | if (!basenames_may_differ | |
4529 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4530 | true)) | |
4531 | continue; | |
4532 | ||
976ca316 | 4533 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4534 | if (file_matcher (this_real_name, false)) |
4535 | { | |
4536 | per_cu->v.quick->mark = 1; | |
4537 | break; | |
4538 | } | |
4539 | } | |
4540 | ||
b76e467d SM |
4541 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4542 | ? visited_found.get () | |
4543 | : visited_not_found.get (), | |
4544 | file_data, INSERT); | |
927aa2e7 JK |
4545 | *slot = file_data; |
4546 | } | |
4547 | } | |
4548 | ||
df35e626 | 4549 | bool |
af82f89d TT |
4550 | dwarf2_gdb_index::expand_symtabs_matching |
4551 | (struct objfile *objfile, | |
4552 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4553 | const lookup_name_info *lookup_name, | |
4554 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4555 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4556 | block_search_flags search_flags, |
3bfa51a7 | 4557 | domain_enum domain, |
af82f89d | 4558 | enum search_domain kind) |
927aa2e7 | 4559 | { |
976ca316 | 4560 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4561 | |
4562 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4563 | if (!per_objfile->per_bfd->index_table) |
df35e626 | 4564 | return true; |
927aa2e7 | 4565 | |
976ca316 | 4566 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4567 | |
c1a66c06 TV |
4568 | if (symbol_matcher == NULL && lookup_name == NULL) |
4569 | { | |
0d305d5c | 4570 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4571 | { |
4572 | QUIT; | |
4573 | ||
0d305d5c | 4574 | if (!dw2_expand_symtabs_matching_one (per_cu.get (), per_objfile, |
df35e626 TT |
4575 | file_matcher, |
4576 | expansion_notify)) | |
4577 | return false; | |
c1a66c06 | 4578 | } |
df35e626 | 4579 | return true; |
c1a66c06 TV |
4580 | } |
4581 | ||
976ca316 | 4582 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4583 | |
df35e626 TT |
4584 | bool result |
4585 | = dw2_expand_symtabs_matching_symbol (index, *lookup_name, | |
4586 | symbol_matcher, | |
4587 | [&] (offset_type idx) | |
927aa2e7 | 4588 | { |
df35e626 | 4589 | if (!dw2_expand_marked_cus (per_objfile, idx, file_matcher, |
03a8ea51 | 4590 | expansion_notify, search_flags, kind)) |
df35e626 | 4591 | return false; |
3b00ef10 | 4592 | return true; |
976ca316 | 4593 | }, per_objfile); |
df35e626 TT |
4594 | |
4595 | return result; | |
927aa2e7 JK |
4596 | } |
4597 | ||
4598 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4599 | symtab. */ | |
4600 | ||
4601 | static struct compunit_symtab * | |
4602 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4603 | CORE_ADDR pc) | |
4604 | { | |
4605 | int i; | |
4606 | ||
4607 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4608 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4609 | return cust; | |
4610 | ||
4611 | if (cust->includes == NULL) | |
4612 | return NULL; | |
4613 | ||
4614 | for (i = 0; cust->includes[i]; ++i) | |
4615 | { | |
4616 | struct compunit_symtab *s = cust->includes[i]; | |
4617 | ||
4618 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4619 | if (s != NULL) | |
4620 | return s; | |
4621 | } | |
4622 | ||
4623 | return NULL; | |
4624 | } | |
4625 | ||
39298a5d TT |
4626 | struct compunit_symtab * |
4627 | dwarf2_base_index_functions::find_pc_sect_compunit_symtab | |
4628 | (struct objfile *objfile, | |
4629 | struct bound_minimal_symbol msymbol, | |
4630 | CORE_ADDR pc, | |
4631 | struct obj_section *section, | |
4632 | int warn_if_readin) | |
927aa2e7 JK |
4633 | { |
4634 | struct dwarf2_per_cu_data *data; | |
4635 | struct compunit_symtab *result; | |
4636 | ||
efd7398e TT |
4637 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4638 | if (per_objfile->per_bfd->index_addrmap == nullptr) | |
927aa2e7 JK |
4639 | return NULL; |
4640 | ||
b3b3bada | 4641 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e TT |
4642 | data = ((struct dwarf2_per_cu_data *) |
4643 | addrmap_find (per_objfile->per_bfd->index_addrmap, | |
4644 | pc - baseaddr)); | |
927aa2e7 JK |
4645 | if (!data) |
4646 | return NULL; | |
4647 | ||
af758d11 | 4648 | if (warn_if_readin && per_objfile->symtab_set_p (data)) |
927aa2e7 | 4649 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4650 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4651 | |
97a1449a SM |
4652 | result = recursively_find_pc_sect_compunit_symtab |
4653 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4654 | ||
927aa2e7 JK |
4655 | gdb_assert (result != NULL); |
4656 | return result; | |
4657 | } | |
4658 | ||
39298a5d | 4659 | void |
f4655dee TT |
4660 | dwarf2_base_index_functions::map_symbol_filenames |
4661 | (struct objfile *objfile, | |
4662 | gdb::function_view<symbol_filename_ftype> fun, | |
4663 | bool need_fullname) | |
927aa2e7 | 4664 | { |
976ca316 | 4665 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4666 | |
9fc29955 AB |
4667 | /* Use caches to ensure we only call FUN once for each filename. */ |
4668 | filename_seen_cache filenames_cache; | |
4669 | std::unordered_set<quick_file_names *> qfn_cache; | |
927aa2e7 | 4670 | |
9fc29955 AB |
4671 | /* The rule is CUs specify all the files, including those used by any TU, |
4672 | so there's no need to scan TUs here. We can ignore file names coming | |
4673 | from already-expanded CUs. It is possible that an expanded CU might | |
4674 | reuse the file names data from a currently unexpanded CU, in this | |
4675 | case we don't want to report the files from the unexpanded CU. */ | |
927aa2e7 | 4676 | |
0d305d5c | 4677 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
9fc29955 | 4678 | { |
0d305d5c | 4679 | if (per_objfile->symtab_set_p (per_cu.get ())) |
927aa2e7 | 4680 | { |
9fc29955 AB |
4681 | if (per_cu->v.quick->file_names != nullptr) |
4682 | qfn_cache.insert (per_cu->v.quick->file_names); | |
927aa2e7 | 4683 | } |
9fc29955 | 4684 | } |
927aa2e7 | 4685 | |
0d305d5c | 4686 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
9fc29955 AB |
4687 | { |
4688 | /* We only need to look at symtabs not already expanded. */ | |
0d305d5c | 4689 | if (per_objfile->symtab_set_p (per_cu.get ())) |
9fc29955 | 4690 | continue; |
927aa2e7 | 4691 | |
0d305d5c TT |
4692 | quick_file_names *file_data = dw2_get_file_names (per_cu.get (), |
4693 | per_objfile); | |
9fc29955 AB |
4694 | if (file_data == nullptr |
4695 | || qfn_cache.find (file_data) != qfn_cache.end ()) | |
4696 | continue; | |
927aa2e7 | 4697 | |
9fc29955 AB |
4698 | for (int j = 0; j < file_data->num_file_names; ++j) |
4699 | { | |
4700 | const char *filename = file_data->file_names[j]; | |
4701 | filenames_cache.seen (filename); | |
927aa2e7 JK |
4702 | } |
4703 | } | |
4704 | ||
9fc29955 | 4705 | filenames_cache.traverse ([&] (const char *filename) |
927aa2e7 JK |
4706 | { |
4707 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4708 | ||
4709 | if (need_fullname) | |
4710 | this_real_name = gdb_realpath (filename); | |
f4655dee | 4711 | fun (filename, this_real_name.get ()); |
927aa2e7 JK |
4712 | }); |
4713 | } | |
4714 | ||
39298a5d TT |
4715 | bool |
4716 | dwarf2_base_index_functions::has_symbols (struct objfile *objfile) | |
927aa2e7 | 4717 | { |
fae2120b | 4718 | return true; |
927aa2e7 JK |
4719 | } |
4720 | ||
927aa2e7 JK |
4721 | /* DWARF-5 debug_names reader. */ |
4722 | ||
4723 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4724 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4725 | ||
4726 | /* A helper function that reads the .debug_names section in SECTION | |
4727 | and fills in MAP. FILENAME is the name of the file containing the | |
4728 | section; it is used for error reporting. | |
4729 | ||
4730 | Returns true if all went well, false otherwise. */ | |
4731 | ||
4732 | static bool | |
4733 | read_debug_names_from_section (struct objfile *objfile, | |
4734 | const char *filename, | |
4735 | struct dwarf2_section_info *section, | |
4736 | mapped_debug_names &map) | |
4737 | { | |
96b79293 | 4738 | if (section->empty ()) |
927aa2e7 JK |
4739 | return false; |
4740 | ||
4741 | /* Older elfutils strip versions could keep the section in the main | |
4742 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4743 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4744 | return false; |
4745 | ||
96b79293 | 4746 | section->read (objfile); |
927aa2e7 | 4747 | |
08feed99 | 4748 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4749 | |
4750 | const gdb_byte *addr = section->buffer; | |
4751 | ||
96b79293 | 4752 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4753 | |
4754 | unsigned int bytes_read; | |
4755 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4756 | addr += bytes_read; | |
4757 | ||
4758 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4759 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4760 | if (bytes_read + length != section->size) | |
4761 | { | |
4762 | /* There may be multiple per-CU indices. */ | |
4763 | warning (_("Section .debug_names in %s length %s does not match " | |
4764 | "section length %s, ignoring .debug_names."), | |
4765 | filename, plongest (bytes_read + length), | |
4766 | pulongest (section->size)); | |
4767 | return false; | |
4768 | } | |
4769 | ||
4770 | /* The version number. */ | |
4771 | uint16_t version = read_2_bytes (abfd, addr); | |
4772 | addr += 2; | |
4773 | if (version != 5) | |
4774 | { | |
4775 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4776 | "ignoring .debug_names."), | |
4777 | filename, version); | |
4778 | return false; | |
4779 | } | |
4780 | ||
4781 | /* Padding. */ | |
4782 | uint16_t padding = read_2_bytes (abfd, addr); | |
4783 | addr += 2; | |
4784 | if (padding != 0) | |
4785 | { | |
4786 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4787 | "ignoring .debug_names."), | |
4788 | filename, padding); | |
4789 | return false; | |
4790 | } | |
4791 | ||
4792 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4793 | map.cu_count = read_4_bytes (abfd, addr); | |
4794 | addr += 4; | |
4795 | ||
4796 | /* local_type_unit_count - The number of TUs in the local TU | |
4797 | list. */ | |
4798 | map.tu_count = read_4_bytes (abfd, addr); | |
4799 | addr += 4; | |
4800 | ||
4801 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4802 | list. */ | |
4803 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4804 | addr += 4; | |
4805 | if (foreign_tu_count != 0) | |
4806 | { | |
4807 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4808 | "ignoring .debug_names."), | |
4809 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4810 | return false; | |
4811 | } | |
4812 | ||
4813 | /* bucket_count - The number of hash buckets in the hash lookup | |
4814 | table. */ | |
4815 | map.bucket_count = read_4_bytes (abfd, addr); | |
4816 | addr += 4; | |
4817 | ||
4818 | /* name_count - The number of unique names in the index. */ | |
4819 | map.name_count = read_4_bytes (abfd, addr); | |
4820 | addr += 4; | |
4821 | ||
4822 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4823 | table. */ | |
4824 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4825 | addr += 4; | |
4826 | ||
4827 | /* augmentation_string_size - The size in bytes of the augmentation | |
4828 | string. This value is rounded up to a multiple of 4. */ | |
4829 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4830 | addr += 4; | |
4831 | map.augmentation_is_gdb = ((augmentation_string_size | |
4832 | == sizeof (dwarf5_augmentation)) | |
4833 | && memcmp (addr, dwarf5_augmentation, | |
4834 | sizeof (dwarf5_augmentation)) == 0); | |
4835 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4836 | addr += augmentation_string_size; | |
4837 | ||
4838 | /* List of CUs */ | |
4839 | map.cu_table_reordered = addr; | |
4840 | addr += map.cu_count * map.offset_size; | |
4841 | ||
4842 | /* List of Local TUs */ | |
4843 | map.tu_table_reordered = addr; | |
4844 | addr += map.tu_count * map.offset_size; | |
4845 | ||
4846 | /* Hash Lookup Table */ | |
4847 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4848 | addr += map.bucket_count * 4; | |
4849 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4850 | addr += map.name_count * 4; | |
4851 | ||
4852 | /* Name Table */ | |
4853 | map.name_table_string_offs_reordered = addr; | |
4854 | addr += map.name_count * map.offset_size; | |
4855 | map.name_table_entry_offs_reordered = addr; | |
4856 | addr += map.name_count * map.offset_size; | |
4857 | ||
4858 | const gdb_byte *abbrev_table_start = addr; | |
4859 | for (;;) | |
4860 | { | |
927aa2e7 JK |
4861 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4862 | addr += bytes_read; | |
4863 | if (index_num == 0) | |
4864 | break; | |
4865 | ||
4866 | const auto insertpair | |
4867 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4868 | if (!insertpair.second) | |
4869 | { | |
4870 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4871 | "ignoring .debug_names."), | |
4872 | filename, pulongest (index_num)); | |
4873 | return false; | |
4874 | } | |
4875 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4876 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4877 | addr += bytes_read; | |
4878 | ||
4879 | for (;;) | |
4880 | { | |
4881 | mapped_debug_names::index_val::attr attr; | |
4882 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4883 | addr += bytes_read; | |
4884 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4885 | addr += bytes_read; | |
4886 | if (attr.form == DW_FORM_implicit_const) | |
4887 | { | |
4888 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4889 | &bytes_read); | |
4890 | addr += bytes_read; | |
4891 | } | |
4892 | if (attr.dw_idx == 0 && attr.form == 0) | |
4893 | break; | |
4894 | indexval.attr_vec.push_back (std::move (attr)); | |
4895 | } | |
4896 | } | |
4897 | if (addr != abbrev_table_start + abbrev_table_size) | |
4898 | { | |
4899 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4900 | "of size %s vs. written as %u, ignoring .debug_names."), |
4901 | filename, plongest (addr - abbrev_table_start), | |
4902 | abbrev_table_size); | |
927aa2e7 JK |
4903 | return false; |
4904 | } | |
4905 | map.entry_pool = addr; | |
4906 | ||
4907 | return true; | |
4908 | } | |
4909 | ||
4910 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4911 | list. */ | |
4912 | ||
4913 | static void | |
168c9250 | 4914 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
4915 | const mapped_debug_names &map, |
4916 | dwarf2_section_info §ion, | |
b76e467d | 4917 | bool is_dwz) |
927aa2e7 | 4918 | { |
3ee6bb11 TV |
4919 | if (!map.augmentation_is_gdb) |
4920 | { | |
fc9a13fb TV |
4921 | for (uint32_t i = 0; i < map.cu_count; ++i) |
4922 | { | |
4923 | sect_offset sect_off | |
4924 | = (sect_offset) (extract_unsigned_integer | |
4925 | (map.cu_table_reordered + i * map.offset_size, | |
4926 | map.offset_size, | |
4927 | map.dwarf5_byte_order)); | |
4928 | /* We don't know the length of the CU, because the CU list in a | |
4929 | .debug_names index can be incomplete, so we can't use the start | |
4930 | of the next CU as end of this CU. We create the CUs here with | |
4931 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
4932 | actual length. */ | |
0d305d5c | 4933 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
fc9a13fb TV |
4934 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
4935 | sect_off, 0); | |
0d305d5c | 4936 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
fc9a13fb | 4937 | } |
d3b54e63 | 4938 | return; |
3ee6bb11 TV |
4939 | } |
4940 | ||
927aa2e7 JK |
4941 | sect_offset sect_off_prev; |
4942 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4943 | { | |
4944 | sect_offset sect_off_next; | |
4945 | if (i < map.cu_count) | |
4946 | { | |
4947 | sect_off_next | |
4948 | = (sect_offset) (extract_unsigned_integer | |
4949 | (map.cu_table_reordered + i * map.offset_size, | |
4950 | map.offset_size, | |
4951 | map.dwarf5_byte_order)); | |
4952 | } | |
4953 | else | |
4954 | sect_off_next = (sect_offset) section.size; | |
4955 | if (i >= 1) | |
4956 | { | |
4957 | const ULONGEST length = sect_off_next - sect_off_prev; | |
0d305d5c | 4958 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
168c9250 | 4959 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 4960 | sect_off_prev, length); |
0d305d5c | 4961 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
927aa2e7 JK |
4962 | } |
4963 | sect_off_prev = sect_off_next; | |
4964 | } | |
4965 | } | |
4966 | ||
4967 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 4968 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
4969 | |
4970 | static void | |
168c9250 | 4971 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
4972 | const mapped_debug_names &map, |
4973 | const mapped_debug_names &dwz_map) | |
4974 | { | |
168c9250 SM |
4975 | gdb_assert (per_bfd->all_comp_units.empty ()); |
4976 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 4977 | |
168c9250 | 4978 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 4979 | false /* is_dwz */); |
927aa2e7 JK |
4980 | |
4981 | if (dwz_map.cu_count == 0) | |
4982 | return; | |
4983 | ||
168c9250 SM |
4984 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
4985 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 4986 | true /* is_dwz */); |
927aa2e7 JK |
4987 | } |
4988 | ||
4989 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
4990 | elements of all the CUs and return true. Otherwise, return false. */ | |
4991 | ||
4992 | static bool | |
976ca316 | 4993 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 4994 | { |
fcf23d5b SM |
4995 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
4996 | mapped_debug_names dwz_map; | |
976ca316 | 4997 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 4998 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
4999 | |
5000 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
bab287cd | 5001 | &per_bfd->debug_names, *map)) |
927aa2e7 JK |
5002 | return false; |
5003 | ||
5004 | /* Don't use the index if it's empty. */ | |
22ca247e | 5005 | if (map->name_count == 0) |
927aa2e7 JK |
5006 | return false; |
5007 | ||
5008 | /* If there is a .dwz file, read it so we can get its CU list as | |
5009 | well. */ | |
f8c41851 | 5010 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5011 | if (dwz != NULL) |
5012 | { | |
5013 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5014 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5015 | &dwz->debug_names, dwz_map)) |
5016 | { | |
5017 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5018 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5019 | return false; |
5020 | } | |
5021 | } | |
5022 | ||
f8c41851 | 5023 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5024 | |
22ca247e | 5025 | if (map->tu_count != 0) |
927aa2e7 JK |
5026 | { |
5027 | /* We can only handle a single .debug_types when we have an | |
5028 | index. */ | |
f8c41851 | 5029 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5030 | return false; |
5031 | ||
f8c41851 | 5032 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5033 | |
5034 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5035 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5036 | } |
5037 | ||
f8c41851 | 5038 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5039 | |
f8c41851 SM |
5040 | per_bfd->debug_names_table = std::move (map); |
5041 | per_bfd->using_index = 1; | |
5042 | per_bfd->quick_file_names_table = | |
bab287cd | 5043 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); |
927aa2e7 JK |
5044 | |
5045 | return true; | |
5046 | } | |
5047 | ||
927aa2e7 JK |
5048 | /* Type used to manage iterating over all CUs looking for a symbol for |
5049 | .debug_names. */ | |
5050 | ||
5051 | class dw2_debug_names_iterator | |
5052 | { | |
5053 | public: | |
927aa2e7 | 5054 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5055 | block_search_flags block_index, |
2b79f376 | 5056 | domain_enum domain, |
fcf23d5b | 5057 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5058 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5059 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5060 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5061 | {} |
5062 | ||
5063 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
03a8ea51 | 5064 | search_domain search, uint32_t namei, |
3bfa51a7 TT |
5065 | dwarf2_per_objfile *per_objfile, |
5066 | domain_enum domain = UNDEF_DOMAIN) | |
927aa2e7 | 5067 | : m_map (map), |
3bfa51a7 | 5068 | m_domain (domain), |
927aa2e7 | 5069 | m_search (search), |
fcf23d5b SM |
5070 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5071 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5072 | {} |
5073 | ||
3b00ef10 | 5074 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5075 | block_search_flags block_index, domain_enum domain, |
fcf23d5b | 5076 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5077 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5078 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5079 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5080 | {} |
5081 | ||
927aa2e7 JK |
5082 | /* Return the next matching CU or NULL if there are no more. */ |
5083 | dwarf2_per_cu_data *next (); | |
5084 | ||
5085 | private: | |
5086 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5087 | const char *name, |
5088 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5089 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5090 | uint32_t namei, |
5091 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5092 | |
5093 | /* The internalized form of .debug_names. */ | |
5094 | const mapped_debug_names &m_map; | |
5095 | ||
03a8ea51 TT |
5096 | /* Restrict the search to these blocks. */ |
5097 | block_search_flags m_block_index = (SEARCH_GLOBAL_BLOCK | |
5098 | | SEARCH_STATIC_BLOCK); | |
927aa2e7 JK |
5099 | |
5100 | /* The kind of symbol we're looking for. */ | |
5101 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5102 | const search_domain m_search = ALL_DOMAIN; | |
5103 | ||
5104 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5105 | not found. */ | |
5106 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5107 | |
5108 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5109 | }; |
5110 | ||
5111 | const char * | |
fcf23d5b | 5112 | mapped_debug_names::namei_to_name |
976ca316 | 5113 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5114 | { |
5115 | const ULONGEST namei_string_offs | |
5116 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5117 | + namei * offset_size), | |
5118 | offset_size, | |
5119 | dwarf5_byte_order); | |
976ca316 | 5120 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5121 | } |
5122 | ||
5123 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5124 | found, return pointer to its pool data. If NAME cannot be found, | |
5125 | return NULL. */ | |
5126 | ||
5127 | const gdb_byte * | |
5128 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5129 | (const mapped_debug_names &map, const char *name, |
5130 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5131 | { |
5132 | int (*cmp) (const char *, const char *); | |
5133 | ||
54ee4252 | 5134 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5135 | if (current_language->la_language == language_cplus |
5136 | || current_language->la_language == language_fortran | |
5137 | || current_language->la_language == language_d) | |
5138 | { | |
5139 | /* NAME is already canonical. Drop any qualifiers as | |
5140 | .debug_names does not contain any. */ | |
5141 | ||
5142 | if (strchr (name, '(') != NULL) | |
5143 | { | |
54ee4252 | 5144 | without_params = cp_remove_params (name); |
927aa2e7 | 5145 | if (without_params != NULL) |
54ee4252 | 5146 | name = without_params.get (); |
927aa2e7 JK |
5147 | } |
5148 | } | |
5149 | ||
5150 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5151 | ||
5152 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5153 | uint32_t namei | |
5154 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5155 | (map.bucket_table_reordered | |
5156 | + (full_hash % map.bucket_count)), 4, | |
5157 | map.dwarf5_byte_order); | |
5158 | if (namei == 0) | |
5159 | return NULL; | |
5160 | --namei; | |
5161 | if (namei >= map.name_count) | |
5162 | { | |
b98664d3 | 5163 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5164 | "[in module %s]"), |
5165 | namei, map.name_count, | |
fcf23d5b | 5166 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5167 | return NULL; |
5168 | } | |
5169 | ||
5170 | for (;;) | |
5171 | { | |
5172 | const uint32_t namei_full_hash | |
5173 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5174 | (map.hash_table_reordered + namei), 4, | |
5175 | map.dwarf5_byte_order); | |
5176 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5177 | return NULL; | |
5178 | ||
5179 | if (full_hash == namei_full_hash) | |
5180 | { | |
fcf23d5b | 5181 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5182 | |
5183 | #if 0 /* An expensive sanity check. */ | |
5184 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5185 | { | |
b98664d3 | 5186 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5187 | "[in module %s]"), |
5188 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5189 | return NULL; | |
5190 | } | |
5191 | #endif | |
5192 | ||
5193 | if (cmp (namei_string, name) == 0) | |
5194 | { | |
5195 | const ULONGEST namei_entry_offs | |
5196 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5197 | + namei * map.offset_size), | |
5198 | map.offset_size, map.dwarf5_byte_order); | |
5199 | return map.entry_pool + namei_entry_offs; | |
5200 | } | |
5201 | } | |
5202 | ||
5203 | ++namei; | |
5204 | if (namei >= map.name_count) | |
5205 | return NULL; | |
5206 | } | |
5207 | } | |
5208 | ||
5209 | const gdb_byte * | |
5210 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5211 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5212 | { |
5213 | if (namei >= map.name_count) | |
5214 | { | |
b98664d3 | 5215 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5216 | "[in module %s]"), |
5217 | namei, map.name_count, | |
fcf23d5b | 5218 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5219 | return NULL; |
5220 | } | |
5221 | ||
5222 | const ULONGEST namei_entry_offs | |
5223 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5224 | + namei * map.offset_size), | |
5225 | map.offset_size, map.dwarf5_byte_order); | |
5226 | return map.entry_pool + namei_entry_offs; | |
5227 | } | |
5228 | ||
5229 | /* See dw2_debug_names_iterator. */ | |
5230 | ||
5231 | dwarf2_per_cu_data * | |
5232 | dw2_debug_names_iterator::next () | |
5233 | { | |
5234 | if (m_addr == NULL) | |
5235 | return NULL; | |
5236 | ||
fcf23d5b SM |
5237 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5238 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5239 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5240 | |
5241 | again: | |
5242 | ||
5243 | unsigned int bytes_read; | |
5244 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5245 | m_addr += bytes_read; | |
5246 | if (abbrev == 0) | |
5247 | return NULL; | |
5248 | ||
5249 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5250 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5251 | { | |
b98664d3 | 5252 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5253 | "[in module %s]"), |
ed2dc618 | 5254 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5255 | return NULL; |
5256 | } | |
5257 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5258 | enum class symbol_linkage { |
5259 | unknown, | |
5260 | static_, | |
5261 | extern_, | |
23c13d42 | 5262 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5263 | dwarf2_per_cu_data *per_cu = NULL; |
5264 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5265 | { | |
5266 | ULONGEST ull; | |
5267 | switch (attr.form) | |
5268 | { | |
5269 | case DW_FORM_implicit_const: | |
5270 | ull = attr.implicit_const; | |
5271 | break; | |
5272 | case DW_FORM_flag_present: | |
5273 | ull = 1; | |
5274 | break; | |
5275 | case DW_FORM_udata: | |
5276 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5277 | m_addr += bytes_read; | |
5278 | break; | |
6dc55ce9 | 5279 | case DW_FORM_ref4: |
5280 | ull = read_4_bytes (abfd, m_addr); | |
5281 | m_addr += 4; | |
5282 | break; | |
5283 | case DW_FORM_ref8: | |
5284 | ull = read_8_bytes (abfd, m_addr); | |
5285 | m_addr += 8; | |
5286 | break; | |
5287 | case DW_FORM_ref_sig8: | |
5288 | ull = read_8_bytes (abfd, m_addr); | |
5289 | m_addr += 8; | |
5290 | break; | |
927aa2e7 | 5291 | default: |
b98664d3 | 5292 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5293 | dwarf_form_name (attr.form), |
ed2dc618 | 5294 | objfile_name (objfile)); |
927aa2e7 JK |
5295 | return NULL; |
5296 | } | |
5297 | switch (attr.dw_idx) | |
5298 | { | |
5299 | case DW_IDX_compile_unit: | |
5300 | /* Don't crash on bad data. */ | |
bab287cd | 5301 | if (ull >= per_bfd->all_comp_units.size ()) |
927aa2e7 | 5302 | { |
b98664d3 | 5303 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5304 | " [in module %s]"), |
5305 | pulongest (ull), | |
fcf23d5b | 5306 | objfile_name (objfile)); |
927aa2e7 JK |
5307 | continue; |
5308 | } | |
91eea9cc | 5309 | per_cu = per_bfd->get_cu (ull); |
927aa2e7 | 5310 | break; |
8af5c486 JK |
5311 | case DW_IDX_type_unit: |
5312 | /* Don't crash on bad data. */ | |
91eea9cc | 5313 | if (ull >= per_bfd->tu_stats.nr_tus) |
8af5c486 | 5314 | { |
b98664d3 | 5315 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5316 | " [in module %s]"), |
5317 | pulongest (ull), | |
fcf23d5b | 5318 | objfile_name (objfile)); |
8af5c486 JK |
5319 | continue; |
5320 | } | |
91eea9cc | 5321 | per_cu = per_bfd->get_cu (ull + per_bfd->tu_stats.nr_tus); |
8af5c486 | 5322 | break; |
6dc55ce9 | 5323 | case DW_IDX_die_offset: |
5324 | /* In a per-CU index (as opposed to a per-module index), index | |
5325 | entries without CU attribute implicitly refer to the single CU. */ | |
5326 | if (per_cu == NULL) | |
fcf23d5b | 5327 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5328 | break; |
927aa2e7 JK |
5329 | case DW_IDX_GNU_internal: |
5330 | if (!m_map.augmentation_is_gdb) | |
5331 | break; | |
23c13d42 | 5332 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5333 | break; |
5334 | case DW_IDX_GNU_external: | |
5335 | if (!m_map.augmentation_is_gdb) | |
5336 | break; | |
23c13d42 | 5337 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5338 | break; |
5339 | } | |
5340 | } | |
5341 | ||
5342 | /* Skip if already read in. */ | |
fcf23d5b | 5343 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5344 | goto again; |
5345 | ||
5346 | /* Check static vs global. */ | |
03a8ea51 | 5347 | if (symbol_linkage_ != symbol_linkage::unknown) |
927aa2e7 | 5348 | { |
03a8ea51 TT |
5349 | if (symbol_linkage_ == symbol_linkage::static_) |
5350 | { | |
5351 | if ((m_block_index & SEARCH_STATIC_BLOCK) == 0) | |
5352 | goto again; | |
5353 | } | |
5354 | else | |
5355 | { | |
5356 | if ((m_block_index & SEARCH_GLOBAL_BLOCK) == 0) | |
5357 | goto again; | |
5358 | } | |
927aa2e7 JK |
5359 | } |
5360 | ||
5361 | /* Match dw2_symtab_iter_next, symbol_kind | |
5362 | and debug_names::psymbol_tag. */ | |
5363 | switch (m_domain) | |
5364 | { | |
5365 | case VAR_DOMAIN: | |
5366 | switch (indexval.dwarf_tag) | |
5367 | { | |
5368 | case DW_TAG_variable: | |
5369 | case DW_TAG_subprogram: | |
5370 | /* Some types are also in VAR_DOMAIN. */ | |
5371 | case DW_TAG_typedef: | |
5372 | case DW_TAG_structure_type: | |
5373 | break; | |
5374 | default: | |
5375 | goto again; | |
5376 | } | |
5377 | break; | |
5378 | case STRUCT_DOMAIN: | |
5379 | switch (indexval.dwarf_tag) | |
5380 | { | |
5381 | case DW_TAG_typedef: | |
5382 | case DW_TAG_structure_type: | |
5383 | break; | |
5384 | default: | |
5385 | goto again; | |
5386 | } | |
5387 | break; | |
5388 | case LABEL_DOMAIN: | |
5389 | switch (indexval.dwarf_tag) | |
5390 | { | |
5391 | case 0: | |
5392 | case DW_TAG_variable: | |
5393 | break; | |
5394 | default: | |
5395 | goto again; | |
5396 | } | |
5397 | break; | |
59c35742 AB |
5398 | case MODULE_DOMAIN: |
5399 | switch (indexval.dwarf_tag) | |
5400 | { | |
5401 | case DW_TAG_module: | |
5402 | break; | |
5403 | default: | |
5404 | goto again; | |
5405 | } | |
5406 | break; | |
927aa2e7 JK |
5407 | default: |
5408 | break; | |
5409 | } | |
5410 | ||
5411 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5412 | debug_names::psymbol_tag. */ | |
5413 | switch (m_search) | |
4b514bc8 | 5414 | { |
927aa2e7 JK |
5415 | case VARIABLES_DOMAIN: |
5416 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5417 | { |
927aa2e7 JK |
5418 | case DW_TAG_variable: |
5419 | break; | |
5420 | default: | |
5421 | goto again; | |
4b514bc8 | 5422 | } |
927aa2e7 JK |
5423 | break; |
5424 | case FUNCTIONS_DOMAIN: | |
5425 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5426 | { |
927aa2e7 JK |
5427 | case DW_TAG_subprogram: |
5428 | break; | |
5429 | default: | |
5430 | goto again; | |
4b514bc8 | 5431 | } |
927aa2e7 JK |
5432 | break; |
5433 | case TYPES_DOMAIN: | |
5434 | switch (indexval.dwarf_tag) | |
5435 | { | |
5436 | case DW_TAG_typedef: | |
5437 | case DW_TAG_structure_type: | |
5438 | break; | |
5439 | default: | |
5440 | goto again; | |
5441 | } | |
5442 | break; | |
59c35742 AB |
5443 | case MODULES_DOMAIN: |
5444 | switch (indexval.dwarf_tag) | |
5445 | { | |
5446 | case DW_TAG_module: | |
5447 | break; | |
5448 | default: | |
5449 | goto again; | |
5450 | } | |
927aa2e7 JK |
5451 | default: |
5452 | break; | |
4b514bc8 | 5453 | } |
927aa2e7 JK |
5454 | |
5455 | return per_cu; | |
4b514bc8 | 5456 | } |
61920122 | 5457 | |
927aa2e7 JK |
5458 | /* This dumps minimal information about .debug_names. It is called |
5459 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5460 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5461 | |
39298a5d TT |
5462 | void |
5463 | dwarf2_debug_names_index::dump (struct objfile *objfile) | |
927aa2e7 | 5464 | { |
976ca316 | 5465 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5466 | |
976ca316 | 5467 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5468 | printf_filtered (".debug_names:"); |
976ca316 | 5469 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5470 | printf_filtered (" exists\n"); |
5471 | else | |
5472 | printf_filtered (" faked for \"readnow\"\n"); | |
5473 | printf_filtered ("\n"); | |
9291a0cd TT |
5474 | } |
5475 | ||
39298a5d | 5476 | void |
0b7b2c2a | 5477 | dwarf2_debug_names_index::expand_matching_symbols |
3b00ef10 TT |
5478 | (struct objfile *objfile, |
5479 | const lookup_name_info &name, domain_enum domain, | |
5480 | int global, | |
3b00ef10 TT |
5481 | symbol_compare_ftype *ordered_compare) |
5482 | { | |
976ca316 | 5483 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5484 | |
5485 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5486 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5487 | return; |
5488 | ||
976ca316 | 5489 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
03a8ea51 TT |
5490 | const block_search_flags block_flags |
5491 | = global ? SEARCH_GLOBAL_BLOCK : SEARCH_STATIC_BLOCK; | |
3b00ef10 TT |
5492 | |
5493 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5494 | auto matcher = [&] (const char *symname) | |
5495 | { | |
5496 | if (ordered_compare == nullptr) | |
5497 | return true; | |
5498 | return ordered_compare (symname, match_name) == 0; | |
5499 | }; | |
5500 | ||
b64f703b | 5501 | dw2_expand_symtabs_matching_symbol (map, name, matcher, |
3b00ef10 TT |
5502 | [&] (offset_type namei) |
5503 | { | |
5504 | /* The name was matched, now expand corresponding CUs that were | |
5505 | marked. */ | |
03a8ea51 | 5506 | dw2_debug_names_iterator iter (map, block_flags, domain, namei, |
976ca316 | 5507 | per_objfile); |
3b00ef10 TT |
5508 | |
5509 | struct dwarf2_per_cu_data *per_cu; | |
5510 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5511 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5512 | nullptr); |
3b00ef10 | 5513 | return true; |
976ca316 | 5514 | }, per_objfile); |
3b00ef10 TT |
5515 | } |
5516 | ||
df35e626 | 5517 | bool |
39298a5d | 5518 | dwarf2_debug_names_index::expand_symtabs_matching |
927aa2e7 JK |
5519 | (struct objfile *objfile, |
5520 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5521 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5522 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5523 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 5524 | block_search_flags search_flags, |
3bfa51a7 | 5525 | domain_enum domain, |
927aa2e7 JK |
5526 | enum search_domain kind) |
5527 | { | |
976ca316 | 5528 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5529 | |
927aa2e7 | 5530 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5531 | if (!per_objfile->per_bfd->debug_names_table) |
df35e626 | 5532 | return true; |
9291a0cd | 5533 | |
976ca316 | 5534 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5535 | |
c1a66c06 TV |
5536 | if (symbol_matcher == NULL && lookup_name == NULL) |
5537 | { | |
0d305d5c | 5538 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5539 | { |
5540 | QUIT; | |
5541 | ||
0d305d5c | 5542 | if (!dw2_expand_symtabs_matching_one (per_cu.get (), per_objfile, |
df35e626 TT |
5543 | file_matcher, |
5544 | expansion_notify)) | |
5545 | return false; | |
c1a66c06 | 5546 | } |
df35e626 | 5547 | return true; |
c1a66c06 TV |
5548 | } |
5549 | ||
976ca316 | 5550 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5551 | |
df35e626 TT |
5552 | bool result |
5553 | = dw2_expand_symtabs_matching_symbol (map, *lookup_name, | |
5554 | symbol_matcher, | |
5555 | [&] (offset_type namei) | |
927aa2e7 | 5556 | { |
927aa2e7 JK |
5557 | /* The name was matched, now expand corresponding CUs that were |
5558 | marked. */ | |
3bfa51a7 | 5559 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile, domain); |
bbf2f4df | 5560 | |
927aa2e7 JK |
5561 | struct dwarf2_per_cu_data *per_cu; |
5562 | while ((per_cu = iter.next ()) != NULL) | |
df35e626 TT |
5563 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
5564 | file_matcher, | |
5565 | expansion_notify)) | |
5566 | return false; | |
3b00ef10 | 5567 | return true; |
976ca316 | 5568 | }, per_objfile); |
df35e626 TT |
5569 | |
5570 | return result; | |
9291a0cd TT |
5571 | } |
5572 | ||
4485a1c1 | 5573 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5574 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5575 | |
5576 | template <typename T> | |
5577 | static gdb::array_view<const gdb_byte> | |
5578 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5579 | { | |
5580 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5581 | ||
96b79293 | 5582 | if (section->empty ()) |
4485a1c1 SM |
5583 | return {}; |
5584 | ||
5585 | /* Older elfutils strip versions could keep the section in the main | |
5586 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5587 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5588 | return {}; |
5589 | ||
96b79293 | 5590 | section->read (obj); |
4485a1c1 | 5591 | |
8bebfcda PA |
5592 | /* dwarf2_section_info::size is a bfd_size_type, while |
5593 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5594 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5595 | is 32-bit. So we need an explicit narrowing conversion here. | |
5596 | This is fine, because it's impossible to allocate or mmap an | |
5597 | array/buffer larger than what size_t can represent. */ | |
5598 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5599 | } |
5600 | ||
87d6a7aa SM |
5601 | /* Lookup the index cache for the contents of the index associated to |
5602 | DWARF2_OBJ. */ | |
5603 | ||
5604 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5605 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5606 | { |
5607 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5608 | if (build_id == nullptr) | |
5609 | return {}; | |
5610 | ||
5611 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5612 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5613 | } |
5614 | ||
5615 | /* Same as the above, but for DWZ. */ | |
5616 | ||
5617 | static gdb::array_view<const gdb_byte> | |
5618 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5619 | { | |
5620 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5621 | if (build_id == nullptr) | |
5622 | return {}; | |
5623 | ||
5624 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5625 | } | |
5626 | ||
edc02ceb | 5627 | /* See dwarf2/public.h. */ |
9291a0cd | 5628 | |
edc02ceb TT |
5629 | void |
5630 | dwarf2_initialize_objfile (struct objfile *objfile) | |
9291a0cd | 5631 | { |
976ca316 SM |
5632 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5633 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 5634 | |
850ed749 SM |
5635 | dwarf_read_debug_printf ("called"); |
5636 | ||
9291a0cd TT |
5637 | /* If we're about to read full symbols, don't bother with the |
5638 | indices. In this case we also don't care if some other debug | |
5639 | format is making psymtabs, because they are all about to be | |
5640 | expanded anyway. */ | |
5641 | if ((objfile->flags & OBJF_READNOW)) | |
5642 | { | |
850ed749 SM |
5643 | dwarf_read_debug_printf ("readnow requested"); |
5644 | ||
17ee85fc TT |
5645 | /* When using READNOW, the using_index flag (set below) indicates that |
5646 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5647 | if (per_bfd->using_index) | |
5648 | { | |
850ed749 | 5649 | dwarf_read_debug_printf ("using_index already set"); |
976ca316 | 5650 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5651 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5652 | return; | |
17ee85fc TT |
5653 | } |
5654 | ||
5655 | per_bfd->using_index = 1; | |
976ca316 | 5656 | create_all_comp_units (per_objfile); |
17ee85fc TT |
5657 | per_bfd->quick_file_names_table |
5658 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 5659 | per_objfile->resize_symtabs (); |
9291a0cd | 5660 | |
91eea9cc | 5661 | for (int i = 0; i < per_bfd->all_comp_units.size (); ++i) |
9291a0cd | 5662 | { |
91eea9cc | 5663 | dwarf2_per_cu_data *per_cu = per_bfd->get_cu (i); |
9291a0cd | 5664 | |
17ee85fc | 5665 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 5666 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5667 | } |
5668 | ||
edc02ceb TT |
5669 | /* Arrange for gdb to see the "quick" functions. However, these |
5670 | functions will be no-ops because we will have expanded all | |
5671 | symtabs. */ | |
5672 | objfile->qf.push_front (make_dwarf_gdb_index ()); | |
5673 | return; | |
9291a0cd TT |
5674 | } |
5675 | ||
17ee85fc TT |
5676 | /* Was a debug names index already read when we processed an objfile sharing |
5677 | PER_BFD? */ | |
5678 | if (per_bfd->debug_names_table != nullptr) | |
5679 | { | |
850ed749 | 5680 | dwarf_read_debug_printf ("re-using shared debug names table"); |
976ca316 | 5681 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5682 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5683 | return; | |
17ee85fc TT |
5684 | } |
5685 | ||
5686 | /* Was a GDB index already read when we processed an objfile sharing | |
5687 | PER_BFD? */ | |
5688 | if (per_bfd->index_table != nullptr) | |
5689 | { | |
850ed749 | 5690 | dwarf_read_debug_printf ("re-using shared index table"); |
976ca316 | 5691 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5692 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5693 | return; | |
17ee85fc TT |
5694 | } |
5695 | ||
efb763a5 SM |
5696 | /* There might already be partial symtabs built for this BFD. This happens |
5697 | when loading the same binary twice with the index-cache enabled. If so, | |
5698 | don't try to read an index. The objfile / per_objfile initialization will | |
5699 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
5700 | code path. */ | |
5701 | if (per_bfd->partial_symtabs != nullptr) | |
850ed749 SM |
5702 | { |
5703 | dwarf_read_debug_printf ("re-using shared partial symtabs"); | |
edc02ceb TT |
5704 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
5705 | return; | |
850ed749 | 5706 | } |
efb763a5 | 5707 | |
976ca316 | 5708 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a | 5709 | { |
850ed749 | 5710 | dwarf_read_debug_printf ("found debug names"); |
976ca316 | 5711 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5712 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5713 | return; | |
3c0aa29a | 5714 | } |
927aa2e7 | 5715 | |
976ca316 | 5716 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 5717 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5718 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a | 5719 | { |
850ed749 | 5720 | dwarf_read_debug_printf ("found gdb index from file"); |
976ca316 | 5721 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5722 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5723 | return; | |
3c0aa29a | 5724 | } |
9291a0cd | 5725 | |
87d6a7aa | 5726 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 5727 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
5728 | get_gdb_index_contents_from_cache, |
5729 | get_gdb_index_contents_from_cache_dwz)) | |
5730 | { | |
850ed749 | 5731 | dwarf_read_debug_printf ("found gdb index from cache"); |
87d6a7aa | 5732 | global_index_cache.hit (); |
976ca316 | 5733 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5734 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5735 | return; | |
87d6a7aa SM |
5736 | } |
5737 | ||
5738 | global_index_cache.miss (); | |
edc02ceb | 5739 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
9291a0cd TT |
5740 | } |
5741 | ||
5742 | \f | |
5743 | ||
dce234bc PP |
5744 | /* Build a partial symbol table. */ |
5745 | ||
5746 | void | |
eb36a3eb | 5747 | dwarf2_build_psymtabs (struct objfile *objfile, psymbol_functions *psf) |
dce234bc | 5748 | { |
976ca316 SM |
5749 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5750 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
5751 | |
5752 | if (per_bfd->partial_symtabs != nullptr) | |
5753 | { | |
5754 | /* Partial symbols were already read, so now we can simply | |
5755 | attach them. */ | |
eb36a3eb TT |
5756 | if (psf == nullptr) |
5757 | { | |
5758 | psf = new psymbol_functions (per_bfd->partial_symtabs); | |
5759 | objfile->qf.emplace_front (psf); | |
5760 | } | |
5761 | else | |
5762 | psf->set_partial_symtabs (per_bfd->partial_symtabs); | |
976ca316 | 5763 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5764 | return; |
5765 | } | |
c9bf0622 | 5766 | |
eb36a3eb TT |
5767 | if (psf == nullptr) |
5768 | { | |
5769 | psf = new psymbol_functions; | |
5770 | objfile->qf.emplace_front (psf); | |
5771 | } | |
5772 | const std::shared_ptr<psymtab_storage> &partial_symtabs | |
5773 | = psf->get_partial_symtabs (); | |
5774 | ||
51962708 TT |
5775 | /* Set the local reference to partial symtabs, so that we don't try |
5776 | to read them again if reading another objfile with the same BFD. | |
5777 | If we can't in fact share, this won't make a difference anyway as | |
5778 | the dwarf2_per_bfd object won't be shared. */ | |
eb36a3eb | 5779 | per_bfd->partial_symtabs = partial_symtabs; |
51962708 | 5780 | |
a70b8144 | 5781 | try |
c9bf0622 TT |
5782 | { |
5783 | /* This isn't really ideal: all the data we allocate on the | |
5784 | objfile's obstack is still uselessly kept around. However, | |
5785 | freeing it seems unsafe. */ | |
eb36a3eb | 5786 | psymtab_discarder psymtabs (partial_symtabs.get ()); |
976ca316 | 5787 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 5788 | psymtabs.keep (); |
87d6a7aa | 5789 | |
976ca316 | 5790 | per_objfile->resize_symtabs (); |
af758d11 | 5791 | |
87d6a7aa | 5792 | /* (maybe) store an index in the cache. */ |
976ca316 | 5793 | global_index_cache.store (per_objfile); |
c9bf0622 | 5794 | } |
230d2906 | 5795 | catch (const gdb_exception_error &except) |
492d29ea PA |
5796 | { |
5797 | exception_print (gdb_stderr, except); | |
5798 | } | |
c906108c | 5799 | } |
c906108c | 5800 | |
3b80fe9b DE |
5801 | /* Find the base address of the compilation unit for range lists and |
5802 | location lists. It will normally be specified by DW_AT_low_pc. | |
5803 | In DWARF-3 draft 4, the base address could be overridden by | |
5804 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5805 | compilation units with discontinuous ranges. */ | |
5806 | ||
5807 | static void | |
5808 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5809 | { | |
5810 | struct attribute *attr; | |
5811 | ||
2b24b6e4 | 5812 | cu->base_address.reset (); |
3b80fe9b DE |
5813 | |
5814 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5815 | if (attr != nullptr) |
95f982e5 | 5816 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5817 | else |
5818 | { | |
5819 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5820 | if (attr != nullptr) |
95f982e5 | 5821 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5822 | } |
5823 | } | |
5824 | ||
36586728 TT |
5825 | /* Helper function that returns the proper abbrev section for |
5826 | THIS_CU. */ | |
5827 | ||
5828 | static struct dwarf2_section_info * | |
5829 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5830 | { | |
5831 | struct dwarf2_section_info *abbrev; | |
c3699833 | 5832 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
5833 | |
5834 | if (this_cu->is_dwz) | |
a7308ce0 | 5835 | abbrev = &dwarf2_get_dwz_file (per_bfd, true)->abbrev; |
36586728 | 5836 | else |
c3699833 | 5837 | abbrev = &per_bfd->abbrev; |
36586728 TT |
5838 | |
5839 | return abbrev; | |
5840 | } | |
5841 | ||
f4dc4d17 DE |
5842 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5843 | ||
5844 | static sect_offset | |
976ca316 | 5845 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 5846 | struct dwarf2_section_info *section, |
9c541725 | 5847 | sect_offset sect_off) |
f4dc4d17 | 5848 | { |
96b79293 | 5849 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5850 | const gdb_byte *info_ptr; |
ac298888 | 5851 | unsigned int initial_length_size, offset_size; |
43988095 | 5852 | uint16_t version; |
f4dc4d17 | 5853 | |
976ca316 | 5854 | section->read (per_objfile->objfile); |
9c541725 | 5855 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5856 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5857 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5858 | info_ptr += initial_length_size; |
5859 | ||
5860 | version = read_2_bytes (abfd, info_ptr); | |
5861 | info_ptr += 2; | |
5862 | if (version >= 5) | |
5863 | { | |
5864 | /* Skip unit type and address size. */ | |
5865 | info_ptr += 2; | |
5866 | } | |
5867 | ||
24aa364d | 5868 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5869 | } |
5870 | ||
b83470bf TT |
5871 | /* A partial symtab that is used only for include files. */ |
5872 | struct dwarf2_include_psymtab : public partial_symtab | |
5873 | { | |
7b249e47 TT |
5874 | dwarf2_include_psymtab (const char *filename, |
5875 | psymtab_storage *partial_symtabs, | |
0072c873 SM |
5876 | objfile_per_bfd_storage *objfile_per_bfd) |
5877 | : partial_symtab (filename, partial_symtabs, objfile_per_bfd) | |
b83470bf TT |
5878 | { |
5879 | } | |
5880 | ||
5881 | void read_symtab (struct objfile *objfile) override | |
5882 | { | |
194d088f TV |
5883 | /* It's an include file, no symbols to read for it. |
5884 | Everything is in the includer symtab. */ | |
5885 | ||
5886 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
5887 | expansion of the includer psymtab. We use the dependencies[0] field to | |
5888 | model the includer. But if we go the regular route of calling | |
5889 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
5890 | to expand the includer, we'll only use expand_psymtab on the includer | |
5891 | (making it a non-toplevel psymtab), while if we expand the includer via | |
5892 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
5893 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
5894 | psymtab, and trigger read_symtab on the includer here directly. */ | |
5895 | includer ()->read_symtab (objfile); | |
b83470bf TT |
5896 | } |
5897 | ||
5898 | void expand_psymtab (struct objfile *objfile) override | |
5899 | { | |
194d088f TV |
5900 | /* This is not called by read_symtab, and should not be called by any |
5901 | expand_dependencies. */ | |
5902 | gdb_assert (false); | |
b83470bf TT |
5903 | } |
5904 | ||
5717c425 | 5905 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 5906 | { |
5717c425 | 5907 | return includer ()->readin_p (objfile); |
b83470bf TT |
5908 | } |
5909 | ||
5717c425 | 5910 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
5911 | { |
5912 | return nullptr; | |
5913 | } | |
5914 | ||
5915 | private: | |
194d088f TV |
5916 | partial_symtab *includer () const |
5917 | { | |
5918 | /* An include psymtab has exactly one dependency: the psymtab that | |
5919 | includes it. */ | |
5920 | gdb_assert (this->number_of_dependencies == 1); | |
5921 | return this->dependencies[0]; | |
5922 | } | |
b83470bf TT |
5923 | }; |
5924 | ||
aaa75496 JB |
5925 | /* Allocate a new partial symtab for file named NAME and mark this new |
5926 | partial symtab as being an include of PST. */ | |
5927 | ||
5928 | static void | |
84685904 | 5929 | dwarf2_create_include_psymtab (dwarf2_per_bfd *per_bfd, |
7b249e47 TT |
5930 | const char *name, |
5931 | dwarf2_psymtab *pst, | |
5932 | psymtab_storage *partial_symtabs, | |
0072c873 | 5933 | objfile_per_bfd_storage *objfile_per_bfd) |
aaa75496 | 5934 | { |
7b249e47 | 5935 | dwarf2_include_psymtab *subpst |
0072c873 | 5936 | = new dwarf2_include_psymtab (name, partial_symtabs, objfile_per_bfd); |
aaa75496 | 5937 | |
fbd9ab74 | 5938 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 5939 | subpst->dirname = pst->dirname; |
fbd9ab74 | 5940 | |
84685904 | 5941 | subpst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5942 | subpst->dependencies[0] = pst; |
5943 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
5944 | } |
5945 | ||
5946 | /* Read the Line Number Program data and extract the list of files | |
5947 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5948 | partial symtab for each of these included files. */ |
aaa75496 JB |
5949 | |
5950 | static void | |
5951 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5952 | struct die_info *die, |
891813be | 5953 | dwarf2_psymtab *pst) |
aaa75496 | 5954 | { |
fff8551c | 5955 | line_header_up lh; |
d85a05f0 | 5956 | struct attribute *attr; |
aaa75496 | 5957 | |
d85a05f0 | 5958 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
5959 | if (attr != nullptr && attr->form_is_unsigned ()) |
5960 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
5961 | if (lh == NULL) |
5962 | return; /* No linetable, so no includes. */ | |
5963 | ||
79748972 TT |
5964 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5965 | that we pass in the raw text_low here; that is ok because we're | |
5966 | only decoding the line table to make include partial symtabs, and | |
5967 | so the addresses aren't really used. */ | |
4ae976d1 | 5968 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5969 | pst->raw_text_low (), 1); |
aaa75496 JB |
5970 | } |
5971 | ||
348e048f | 5972 | static hashval_t |
52dc124a | 5973 | hash_signatured_type (const void *item) |
348e048f | 5974 | { |
9a3c8263 SM |
5975 | const struct signatured_type *sig_type |
5976 | = (const struct signatured_type *) item; | |
9a619af0 | 5977 | |
348e048f | 5978 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5979 | return sig_type->signature; |
348e048f DE |
5980 | } |
5981 | ||
5982 | static int | |
52dc124a | 5983 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5984 | { |
9a3c8263 SM |
5985 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5986 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5987 | |
348e048f DE |
5988 | return lhs->signature == rhs->signature; |
5989 | } | |
5990 | ||
1fd400ff TT |
5991 | /* Allocate a hash table for signatured types. */ |
5992 | ||
b0b6a987 | 5993 | static htab_up |
298e9637 | 5994 | allocate_signatured_type_table () |
1fd400ff | 5995 | { |
b0b6a987 TT |
5996 | return htab_up (htab_create_alloc (41, |
5997 | hash_signatured_type, | |
5998 | eq_signatured_type, | |
5999 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6000 | } |
6001 | ||
78d4d2c5 | 6002 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6003 | and fill them into TYPES_HTAB. It will process only type units, |
6004 | therefore DW_UT_type. */ | |
c88ee1f0 | 6005 | |
78d4d2c5 | 6006 | static void |
976ca316 | 6007 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6008 | struct dwo_file *dwo_file, |
b0b6a987 | 6009 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6010 | rcuh_kind section_kind) |
348e048f | 6011 | { |
976ca316 | 6012 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6013 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6014 | bfd *abfd; |
6015 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6016 | |
b8efb248 | 6017 | abbrev_section = &dwo_file->sections.abbrev; |
4bdcc0c1 | 6018 | |
4800761a | 6019 | dwarf_read_debug_printf ("Reading %s for %s", |
6f738b01 SM |
6020 | section->get_name (), |
6021 | abbrev_section->get_file_name ()); | |
09406207 | 6022 | |
96b79293 | 6023 | section->read (objfile); |
78d4d2c5 | 6024 | info_ptr = section->buffer; |
348e048f | 6025 | |
78d4d2c5 JK |
6026 | if (info_ptr == NULL) |
6027 | return; | |
348e048f | 6028 | |
78d4d2c5 JK |
6029 | /* We can't set abfd until now because the section may be empty or |
6030 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6031 | abfd = section->get_bfd_owner (); |
348e048f | 6032 | |
c0ab21c2 TT |
6033 | /* We don't use cutu_reader here because we don't need to read |
6034 | any dies: the signature is in the header. */ | |
3019eac3 | 6035 | |
78d4d2c5 JK |
6036 | end_ptr = info_ptr + section->size; |
6037 | while (info_ptr < end_ptr) | |
6038 | { | |
0d305d5c | 6039 | std::unique_ptr<signatured_type> sig_type; |
78d4d2c5 JK |
6040 | struct dwo_unit *dwo_tu; |
6041 | void **slot; | |
6042 | const gdb_byte *ptr = info_ptr; | |
6043 | struct comp_unit_head header; | |
6044 | unsigned int length; | |
8b70b953 | 6045 | |
9c541725 | 6046 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6047 | |
a49dd8dd JK |
6048 | /* Initialize it due to a false compiler warning. */ |
6049 | header.signature = -1; | |
9c541725 | 6050 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6051 | |
78d4d2c5 JK |
6052 | /* We need to read the type's signature in order to build the hash |
6053 | table, but we don't need anything else just yet. */ | |
348e048f | 6054 | |
976ca316 | 6055 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6056 | abbrev_section, ptr, section_kind); |
348e048f | 6057 | |
4057dfde | 6058 | length = header.get_length (); |
6caca83c | 6059 | |
78d4d2c5 JK |
6060 | /* Skip dummy type units. */ |
6061 | if (ptr >= info_ptr + length | |
43988095 | 6062 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6063 | || (header.unit_type != DW_UT_type |
6064 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6065 | { |
6066 | info_ptr += length; | |
6067 | continue; | |
6068 | } | |
dee91e82 | 6069 | |
78d4d2c5 | 6070 | if (types_htab == NULL) |
b8efb248 | 6071 | types_htab = allocate_dwo_unit_table (); |
8b70b953 | 6072 | |
b8efb248 TT |
6073 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
6074 | dwo_tu->dwo_file = dwo_file; | |
6075 | dwo_tu->signature = header.signature; | |
6076 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; | |
6077 | dwo_tu->section = section; | |
6078 | dwo_tu->sect_off = sect_off; | |
6079 | dwo_tu->length = length; | |
78d4d2c5 | 6080 | |
b8efb248 | 6081 | slot = htab_find_slot (types_htab.get (), dwo_tu, INSERT); |
78d4d2c5 JK |
6082 | gdb_assert (slot != NULL); |
6083 | if (*slot != NULL) | |
b8efb248 TT |
6084 | complaint (_("debug type entry at offset %s is duplicate to" |
6085 | " the entry at offset %s, signature %s"), | |
6086 | sect_offset_str (sect_off), | |
6087 | sect_offset_str (dwo_tu->sect_off), | |
6088 | hex_string (header.signature)); | |
6089 | *slot = dwo_tu; | |
3019eac3 | 6090 | |
6f738b01 SM |
6091 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6092 | sect_offset_str (sect_off), | |
6093 | hex_string (header.signature)); | |
3019eac3 | 6094 | |
78d4d2c5 JK |
6095 | info_ptr += length; |
6096 | } | |
6097 | } | |
3019eac3 | 6098 | |
78d4d2c5 JK |
6099 | /* Create the hash table of all entries in the .debug_types |
6100 | (or .debug_types.dwo) section(s). | |
b8efb248 | 6101 | DWO_FILE is a pointer to the DWO file object. |
b3c8eb43 | 6102 | |
78d4d2c5 | 6103 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6104 | |
78d4d2c5 | 6105 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6106 | |
78d4d2c5 | 6107 | static void |
976ca316 | 6108 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6109 | struct dwo_file *dwo_file, |
fd5866f6 | 6110 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6111 | htab_up &types_htab) |
78d4d2c5 | 6112 | { |
fd5866f6 | 6113 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6114 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6115 | rcuh_kind::TYPE); | |
3019eac3 DE |
6116 | } |
6117 | ||
5989a64e | 6118 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6119 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6120 | Otherwise we find one. */ | |
6121 | ||
6122 | static struct signatured_type * | |
976ca316 | 6123 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6124 | { |
91eea9cc TT |
6125 | if (per_objfile->per_bfd->all_comp_units.size () |
6126 | == per_objfile->per_bfd->all_comp_units.capacity ()) | |
976ca316 | 6127 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; |
6aa5f3a6 | 6128 | |
0d305d5c TT |
6129 | std::unique_ptr<signatured_type> sig_type_holder |
6130 | = per_objfile->per_bfd->allocate_signatured_type (); | |
6131 | signatured_type *sig_type = sig_type_holder.get (); | |
b2bdb8cf | 6132 | |
976ca316 | 6133 | per_objfile->resize_symtabs (); |
af758d11 | 6134 | |
91eea9cc | 6135 | per_objfile->per_bfd->all_comp_units.push_back (std::move (sig_type_holder)); |
6aa5f3a6 | 6136 | sig_type->signature = sig; |
0d305d5c | 6137 | sig_type->is_debug_types = 1; |
976ca316 | 6138 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 | 6139 | { |
0d305d5c | 6140 | sig_type->v.quick = |
976ca316 | 6141 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6142 | struct dwarf2_per_cu_quick_data); |
6143 | } | |
6144 | ||
6145 | if (slot == NULL) | |
6146 | { | |
976ca316 | 6147 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6148 | sig_type, INSERT); |
6149 | } | |
6150 | gdb_assert (*slot == NULL); | |
6151 | *slot = sig_type; | |
6152 | /* The rest of sig_type must be filled in by the caller. */ | |
6153 | return sig_type; | |
6154 | } | |
6155 | ||
a2ce51a0 DE |
6156 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6157 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6158 | ||
6159 | static void | |
976ca316 | 6160 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6161 | struct signatured_type *sig_entry, |
6162 | struct dwo_unit *dwo_entry) | |
6163 | { | |
976ca316 | 6164 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6165 | |
7ee85ab1 | 6166 | /* Make sure we're not clobbering something we don't expect to. */ |
0d305d5c TT |
6167 | gdb_assert (! sig_entry->queued); |
6168 | gdb_assert (per_objfile->get_cu (sig_entry) == NULL); | |
1859c670 | 6169 | if (per_bfd->using_index) |
6aa5f3a6 | 6170 | { |
0d305d5c TT |
6171 | gdb_assert (sig_entry->v.quick != NULL); |
6172 | gdb_assert (!per_objfile->symtab_set_p (sig_entry)); | |
6aa5f3a6 DE |
6173 | } |
6174 | else | |
0d305d5c | 6175 | gdb_assert (sig_entry->v.psymtab == NULL); |
a2ce51a0 | 6176 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6177 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6178 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6179 | gdb_assert (sig_entry->dwo_unit == NULL); |
6180 | ||
0d305d5c TT |
6181 | sig_entry->section = dwo_entry->section; |
6182 | sig_entry->sect_off = dwo_entry->sect_off; | |
6183 | sig_entry->length = dwo_entry->length; | |
6184 | sig_entry->reading_dwo_directly = 1; | |
6185 | sig_entry->per_bfd = per_bfd; | |
a2ce51a0 DE |
6186 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6187 | sig_entry->dwo_unit = dwo_entry; | |
6188 | } | |
6189 | ||
6190 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6191 | If we haven't read the TU yet, create the signatured_type data structure |
6192 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6193 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6194 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6195 | containing that CU. Otherwise we could end up reading several other DWO | |
6196 | files (due to comdat folding) to process the transitive closure of all the | |
6197 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6198 | type signature that it needs. | |
a2ce51a0 DE |
6199 | We only do this for .gdb_index because in the psymtab case we already have |
6200 | to read all the DWOs to build the type unit groups. */ | |
6201 | ||
6202 | static struct signatured_type * | |
6203 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6204 | { | |
976ca316 | 6205 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6206 | struct dwo_file *dwo_file; |
6207 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6208 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6209 | void **slot; |
a2ce51a0 | 6210 | |
976ca316 | 6211 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6212 | |
6aa5f3a6 DE |
6213 | /* If TU skeletons have been removed then we may not have read in any |
6214 | TUs yet. */ | |
976ca316 SM |
6215 | if (per_objfile->per_bfd->signatured_types == NULL) |
6216 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6217 | |
6218 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6219 | Use the global signatured_types array to do our own comdat-folding |
6220 | of types. If this is the first time we're reading this TU, and | |
6221 | the TU has an entry in .gdb_index, replace the recorded data from | |
6222 | .gdb_index with this TU. */ | |
a2ce51a0 | 6223 | |
a2ce51a0 | 6224 | find_sig_entry.signature = sig; |
976ca316 | 6225 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6226 | &find_sig_entry, INSERT); |
9a3c8263 | 6227 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6228 | |
6229 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6230 | read. Don't reassign the global entry to point to this DWO if that's |
6231 | the case. Also note that if the TU is already being read, it may not | |
6232 | have come from a DWO, the program may be a mix of Fission-compiled | |
6233 | code and non-Fission-compiled code. */ | |
6234 | ||
6235 | /* Have we already tried to read this TU? | |
6236 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6237 | needn't exist in the global table yet). */ | |
0d305d5c | 6238 | if (sig_entry != NULL && sig_entry->tu_read) |
a2ce51a0 DE |
6239 | return sig_entry; |
6240 | ||
6aa5f3a6 DE |
6241 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6242 | dwo_unit of the TU itself. */ | |
6243 | dwo_file = cu->dwo_unit->dwo_file; | |
6244 | ||
a2ce51a0 DE |
6245 | /* Ok, this is the first time we're reading this TU. */ |
6246 | if (dwo_file->tus == NULL) | |
6247 | return NULL; | |
6248 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6249 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6250 | &find_dwo_entry); | |
a2ce51a0 DE |
6251 | if (dwo_entry == NULL) |
6252 | return NULL; | |
6253 | ||
6aa5f3a6 DE |
6254 | /* If the global table doesn't have an entry for this TU, add one. */ |
6255 | if (sig_entry == NULL) | |
976ca316 | 6256 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6257 | |
976ca316 | 6258 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
0d305d5c | 6259 | sig_entry->tu_read = 1; |
a2ce51a0 DE |
6260 | return sig_entry; |
6261 | } | |
6262 | ||
a2ce51a0 DE |
6263 | /* Subroutine of lookup_signatured_type. |
6264 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6265 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6266 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6267 | |
6268 | static struct signatured_type * | |
6269 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6270 | { | |
976ca316 SM |
6271 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6272 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6273 | struct dwo_unit *dwo_entry; |
6274 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6275 | void **slot; |
a2ce51a0 | 6276 | |
976ca316 | 6277 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6278 | gdb_assert (dwp_file != NULL); |
6279 | ||
6aa5f3a6 DE |
6280 | /* If TU skeletons have been removed then we may not have read in any |
6281 | TUs yet. */ | |
976ca316 SM |
6282 | if (per_objfile->per_bfd->signatured_types == NULL) |
6283 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6284 | |
6aa5f3a6 | 6285 | find_sig_entry.signature = sig; |
976ca316 | 6286 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6287 | &find_sig_entry, INSERT); |
9a3c8263 | 6288 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6289 | |
6290 | /* Have we already tried to read this TU? | |
6291 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6292 | needn't exist in the global table yet). */ | |
6293 | if (sig_entry != NULL) | |
6294 | return sig_entry; | |
6295 | ||
a2ce51a0 DE |
6296 | if (dwp_file->tus == NULL) |
6297 | return NULL; | |
976ca316 SM |
6298 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6299 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6300 | if (dwo_entry == NULL) |
6301 | return NULL; | |
6302 | ||
976ca316 SM |
6303 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6304 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6305 | |
a2ce51a0 DE |
6306 | return sig_entry; |
6307 | } | |
6308 | ||
380bca97 | 6309 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6310 | Returns NULL if signature SIG is not present in the table. |
6311 | It is up to the caller to complain about this. */ | |
348e048f DE |
6312 | |
6313 | static struct signatured_type * | |
a2ce51a0 | 6314 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6315 | { |
976ca316 | 6316 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6317 | |
976ca316 | 6318 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6319 | { |
6320 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6321 | These cases require special processing. */ | |
976ca316 | 6322 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6323 | return lookup_dwo_signatured_type (cu, sig); |
6324 | else | |
6325 | return lookup_dwp_signatured_type (cu, sig); | |
6326 | } | |
6327 | else | |
6328 | { | |
6329 | struct signatured_type find_entry, *entry; | |
348e048f | 6330 | |
976ca316 | 6331 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6332 | return NULL; |
6333 | find_entry.signature = sig; | |
9a3c8263 | 6334 | entry = ((struct signatured_type *) |
976ca316 | 6335 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6336 | &find_entry)); |
a2ce51a0 DE |
6337 | return entry; |
6338 | } | |
348e048f | 6339 | } |
18a8505e | 6340 | |
42e7ad6c | 6341 | /* Low level DIE reading support. */ |
348e048f | 6342 | |
d85a05f0 DJ |
6343 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6344 | ||
6345 | static void | |
6346 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6347 | struct dwarf2_cu *cu, |
3019eac3 | 6348 | struct dwarf2_section_info *section, |
685af9cd TT |
6349 | struct dwo_file *dwo_file, |
6350 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6351 | { |
fceca515 | 6352 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6353 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6354 | reader->cu = cu; |
3019eac3 | 6355 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6356 | reader->die_section = section; |
6357 | reader->buffer = section->buffer; | |
f664829e | 6358 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6359 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6360 | } |
6361 | ||
c0ab21c2 | 6362 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6363 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6364 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6365 | already. |
6366 | ||
6367 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6368 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6369 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6370 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6371 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6372 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6373 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6374 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6375 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6376 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6377 | kept around for at least as long as *RESULT_READER. | |
6378 | ||
b0c7bfa9 DE |
6379 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6380 | ||
6381 | static int | |
4ab09049 | 6382 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6383 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6384 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6385 | const char *stub_comp_dir, |
b0c7bfa9 | 6386 | struct die_reader_specs *result_reader, |
d521ce57 | 6387 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6388 | struct die_info **result_comp_unit_die, |
685af9cd | 6389 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6390 | { |
976ca316 | 6391 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6392 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6393 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6394 | bfd *abfd; |
d521ce57 | 6395 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6396 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6397 | int i,num_extra_attrs; | |
6398 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6399 | struct die_info *comp_unit_die; |
6400 | ||
b0aeadb3 DE |
6401 | /* At most one of these may be provided. */ |
6402 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6403 | |
b0c7bfa9 DE |
6404 | /* These attributes aren't processed until later: |
6405 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6406 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6407 | referenced later. However, these attributes are found in the stub | |
6408 | which we won't have later. In order to not impose this complication | |
6409 | on the rest of the code, we read them here and copy them to the | |
6410 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6411 | |
6412 | stmt_list = NULL; | |
6413 | low_pc = NULL; | |
6414 | high_pc = NULL; | |
6415 | ranges = NULL; | |
6416 | comp_dir = NULL; | |
6417 | ||
6418 | if (stub_comp_unit_die != NULL) | |
6419 | { | |
6420 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6421 | DWO file. */ | |
4ab09049 | 6422 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6423 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6424 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6425 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6426 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6427 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6428 | ||
a39fdb41 | 6429 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6430 | |
2b0c7f41 SM |
6431 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
6432 | We need the value before we can process DW_AT_ranges values from the | |
6433 | DWO. */ | |
6434 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
6435 | ||
6436 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
6437 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
6438 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
6439 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
6440 | section. */ | |
6441 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 6442 | } |
a2ce51a0 DE |
6443 | else if (stub_comp_dir != NULL) |
6444 | { | |
6445 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6446 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6447 | comp_dir->name = DW_AT_comp_dir; |
6448 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6449 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6450 | } |
b0c7bfa9 DE |
6451 | |
6452 | /* Set up for reading the DWO CU/TU. */ | |
6453 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6454 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6455 | section->read (objfile); |
6456 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6457 | begin_info_ptr = info_ptr = (section->buffer |
6458 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6459 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6460 | |
4ab09049 | 6461 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6462 | { |
4ab09049 | 6463 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6464 | |
976ca316 SM |
6465 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6466 | section, dwo_abbrev_section, | |
43988095 | 6467 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6468 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6469 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6470 | { |
6471 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6472 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6473 | hex_string (sig_type->signature), |
43988095 | 6474 | hex_string (cu->header.signature), |
9d8780f0 | 6475 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6476 | bfd_get_filename (abfd)); |
6477 | } | |
9c541725 | 6478 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6479 | /* For DWOs coming from DWP files, we don't know the CU length |
6480 | nor the type's offset in the TU until now. */ | |
4057dfde | 6481 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6482 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6483 | |
6484 | /* Establish the type offset that can be used to lookup the type. | |
6485 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6486 | sig_type->type_offset_in_section |
6487 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6488 | } |
6489 | else | |
6490 | { | |
976ca316 SM |
6491 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6492 | section, dwo_abbrev_section, | |
43988095 | 6493 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6494 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6495 | /* For DWOs coming from DWP files, we don't know the CU length |
6496 | until now. */ | |
4057dfde | 6497 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6498 | } |
6499 | ||
606decb2 | 6500 | dwo_abbrev_section->read (objfile); |
685af9cd | 6501 | *result_dwo_abbrev_table |
606decb2 | 6502 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6503 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6504 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6505 | |
6506 | /* Read in the die, but leave space to copy over the attributes | |
6507 | from the stub. This has the benefit of simplifying the rest of | |
6508 | the code - all the work to maintain the illusion of a single | |
6509 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6510 | num_extra_attrs = ((stmt_list != NULL) | |
6511 | + (low_pc != NULL) | |
6512 | + (high_pc != NULL) | |
6513 | + (ranges != NULL) | |
6514 | + (comp_dir != NULL)); | |
6515 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6516 | num_extra_attrs); |
b0c7bfa9 DE |
6517 | |
6518 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6519 | comp_unit_die = *result_comp_unit_die; | |
6520 | i = comp_unit_die->num_attrs; | |
6521 | if (stmt_list != NULL) | |
6522 | comp_unit_die->attrs[i++] = *stmt_list; | |
6523 | if (low_pc != NULL) | |
6524 | comp_unit_die->attrs[i++] = *low_pc; | |
6525 | if (high_pc != NULL) | |
6526 | comp_unit_die->attrs[i++] = *high_pc; | |
6527 | if (ranges != NULL) | |
6528 | comp_unit_die->attrs[i++] = *ranges; | |
6529 | if (comp_dir != NULL) | |
6530 | comp_unit_die->attrs[i++] = *comp_dir; | |
6531 | comp_unit_die->num_attrs += num_extra_attrs; | |
6532 | ||
b4f54984 | 6533 | if (dwarf_die_debug) |
bf6af496 DE |
6534 | { |
6535 | fprintf_unfiltered (gdb_stdlog, | |
6536 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6537 | section->get_name (), |
bf6af496 DE |
6538 | (unsigned) (begin_info_ptr - section->buffer), |
6539 | bfd_get_filename (abfd)); | |
b4f54984 | 6540 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6541 | } |
6542 | ||
b0c7bfa9 DE |
6543 | /* Skip dummy compilation units. */ |
6544 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6545 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6546 | return 0; | |
6547 | ||
6548 | *result_info_ptr = info_ptr; | |
6549 | return 1; | |
6550 | } | |
6551 | ||
a084a2a6 AT |
6552 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6553 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6554 | signature is part of the header. */ | |
6555 | static gdb::optional<ULONGEST> | |
6556 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6557 | { | |
6558 | if (cu->header.version >= 5) | |
6559 | return cu->header.signature; | |
6560 | struct attribute *attr; | |
6561 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 6562 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 6563 | return gdb::optional<ULONGEST> (); |
529908cb | 6564 | return attr->as_unsigned (); |
a084a2a6 AT |
6565 | } |
6566 | ||
c0ab21c2 | 6567 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6568 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6569 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6570 | |
6571 | static struct dwo_unit * | |
4ab09049 | 6572 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6573 | { |
4ab09049 | 6574 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6575 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6576 | const char *comp_dir; |
b0c7bfa9 | 6577 | |
a2ce51a0 DE |
6578 | gdb_assert (cu != NULL); |
6579 | ||
b0c7bfa9 | 6580 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6581 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6582 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6583 | |
4ab09049 SM |
6584 | if (per_cu->is_debug_types) |
6585 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6586 | else |
6587 | { | |
a084a2a6 | 6588 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6589 | |
a084a2a6 | 6590 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6591 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6592 | " [in module %s]"), | |
4ab09049 SM |
6593 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6594 | ||
6595 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6596 | } |
6597 | ||
b0c7bfa9 DE |
6598 | return dwo_unit; |
6599 | } | |
6600 | ||
c0ab21c2 | 6601 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6602 | See it for a description of the parameters. |
fcd3b13d | 6603 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6604 | |
c0ab21c2 | 6605 | void |
9e021579 SM |
6606 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6607 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6608 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6609 | { |
a2ce51a0 | 6610 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6611 | |
6612 | /* Verify we can do the following downcast, and that we have the | |
6613 | data we need. */ | |
6614 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6615 | sig_type = (struct signatured_type *) this_cu; | |
6616 | gdb_assert (sig_type->dwo_unit != NULL); | |
6617 | ||
2e671100 SM |
6618 | dwarf2_cu *cu; |
6619 | ||
6620 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6621 | { |
2e671100 SM |
6622 | cu = existing_cu; |
6623 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6624 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6625 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6626 | } |
6627 | else | |
6628 | { | |
7188ed02 | 6629 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6630 | in per_objfile yet. */ |
7188ed02 | 6631 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 6632 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 6633 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
6634 | } |
6635 | ||
6636 | /* A future optimization, if needed, would be to use an existing | |
6637 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6638 | could share abbrev tables. */ | |
a2ce51a0 | 6639 | |
2e671100 | 6640 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6641 | NULL /* stub_comp_unit_die */, |
6642 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6643 | this, &info_ptr, |
3e225074 | 6644 | &comp_unit_die, |
c0ab21c2 | 6645 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6646 | { |
6647 | /* Dummy die. */ | |
c0ab21c2 | 6648 | dummy_p = true; |
a2ce51a0 | 6649 | } |
a2ce51a0 DE |
6650 | } |
6651 | ||
fd820528 | 6652 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6653 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6654 | |
f4dc4d17 DE |
6655 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6656 | Otherwise the table specified in the comp unit header is read in and used. | |
6657 | This is an optimization for when we already have the abbrev table. | |
6658 | ||
2e671100 SM |
6659 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
6660 | allocated. */ | |
aaa75496 | 6661 | |
ab432490 | 6662 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 6663 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 6664 | struct abbrev_table *abbrev_table, |
2e671100 | 6665 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
6666 | bool skip_partial) |
6667 | : die_reader_specs {}, | |
6751ebae | 6668 | m_this_cu (this_cu) |
c906108c | 6669 | { |
976ca316 | 6670 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 6671 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6672 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 6673 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6674 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6675 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6676 | /* Non-zero if CU currently points to a DWO file and we need to |
6677 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6678 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6679 | int rereading_dwo_cu = 0; |
c906108c | 6680 | |
b4f54984 | 6681 | if (dwarf_die_debug) |
9d8780f0 | 6682 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6683 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6684 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6685 | |
a2ce51a0 DE |
6686 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6687 | file (instead of going through the stub), short-circuit all of this. */ | |
6688 | if (this_cu->reading_dwo_directly) | |
6689 | { | |
6690 | /* Narrow down the scope of possibilities to have to understand. */ | |
6691 | gdb_assert (this_cu->is_debug_types); | |
6692 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 6693 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
6694 | return; |
6695 | } | |
6696 | ||
dee91e82 | 6697 | /* This is cheap if the section is already read in. */ |
96b79293 | 6698 | section->read (objfile); |
dee91e82 | 6699 | |
9c541725 | 6700 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6701 | |
6702 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 6703 | |
2e671100 SM |
6704 | dwarf2_cu *cu; |
6705 | ||
6706 | if (existing_cu != nullptr) | |
dee91e82 | 6707 | { |
2e671100 | 6708 | cu = existing_cu; |
42e7ad6c DE |
6709 | /* If this CU is from a DWO file we need to start over, we need to |
6710 | refetch the attributes from the skeleton CU. | |
6711 | This could be optimized by retrieving those attributes from when we | |
6712 | were here the first time: the previous comp_unit_die was stored in | |
6713 | comp_unit_obstack. But there's no data yet that we need this | |
6714 | optimization. */ | |
6715 | if (cu->dwo_unit != NULL) | |
6716 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6717 | } |
6718 | else | |
6719 | { | |
7188ed02 | 6720 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6721 | in per_objfile yet. */ |
976ca316 SM |
6722 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
6723 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 6724 | cu = m_new_cu.get (); |
42e7ad6c | 6725 | } |
dee91e82 | 6726 | |
b0c7bfa9 | 6727 | /* Get the header. */ |
9c541725 | 6728 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6729 | { |
6730 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6731 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6732 | } |
6733 | else | |
6734 | { | |
3019eac3 | 6735 | if (this_cu->is_debug_types) |
dee91e82 | 6736 | { |
976ca316 SM |
6737 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6738 | section, abbrev_section, | |
6739 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 6740 | |
42e7ad6c DE |
6741 | /* Since per_cu is the first member of struct signatured_type, |
6742 | we can go from a pointer to one to a pointer to the other. */ | |
6743 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6744 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6745 | gdb_assert (sig_type->type_offset_in_tu |
6746 | == cu->header.type_cu_offset_in_tu); | |
6747 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6748 | |
42e7ad6c DE |
6749 | /* LENGTH has not been set yet for type units if we're |
6750 | using .gdb_index. */ | |
4057dfde | 6751 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6752 | |
6753 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6754 | sig_type->type_offset_in_section = |
6755 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6756 | |
6757 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6758 | } |
6759 | else | |
6760 | { | |
976ca316 SM |
6761 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6762 | section, abbrev_section, | |
43988095 JK |
6763 | info_ptr, |
6764 | rcuh_kind::COMPILE); | |
dee91e82 | 6765 | |
9c541725 | 6766 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
6767 | if (this_cu->length == 0) |
6768 | this_cu->length = cu->header.get_length (); | |
6769 | else | |
6770 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 6771 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6772 | } |
6773 | } | |
10b3939b | 6774 | |
6caca83c | 6775 | /* Skip dummy compilation units. */ |
dee91e82 | 6776 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6777 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6778 | { |
6779 | dummy_p = true; | |
6780 | return; | |
6781 | } | |
6caca83c | 6782 | |
433df2d4 DE |
6783 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6784 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6785 | done. */ |
f4dc4d17 | 6786 | if (abbrev_table != NULL) |
685af9cd TT |
6787 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6788 | else | |
f4dc4d17 | 6789 | { |
606decb2 | 6790 | abbrev_section->read (objfile); |
c0ab21c2 | 6791 | m_abbrev_table_holder |
606decb2 | 6792 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 6793 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6794 | } |
af703f96 | 6795 | |
dee91e82 | 6796 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6797 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6798 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6799 | |
58f0c718 | 6800 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6801 | { |
6802 | dummy_p = true; | |
6803 | return; | |
6804 | } | |
58f0c718 | 6805 | |
b0c7bfa9 | 6806 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6807 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6808 | table from the DWO file and pass the ownership over to us. It will be | |
6809 | referenced from READER, so we must make sure to free it after we're done | |
6810 | with READER. | |
6811 | ||
b0c7bfa9 DE |
6812 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6813 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6814 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6815 | if (dwo_name != nullptr) |
3019eac3 | 6816 | { |
3019eac3 | 6817 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6818 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6819 | |
3e225074 | 6820 | if (comp_unit_die->has_children) |
6a506a2d | 6821 | { |
b98664d3 | 6822 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6823 | " has children (offset %s) [in module %s]"), |
6824 | sect_offset_str (this_cu->sect_off), | |
6825 | bfd_get_filename (abfd)); | |
6a506a2d | 6826 | } |
4ab09049 | 6827 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 6828 | if (dwo_unit != NULL) |
3019eac3 | 6829 | { |
4ab09049 | 6830 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 6831 | comp_unit_die, NULL, |
c0ab21c2 | 6832 | this, &info_ptr, |
3e225074 | 6833 | &dwo_comp_unit_die, |
c0ab21c2 | 6834 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6835 | { |
6836 | /* Dummy die. */ | |
c0ab21c2 | 6837 | dummy_p = true; |
6a506a2d DE |
6838 | return; |
6839 | } | |
6840 | comp_unit_die = dwo_comp_unit_die; | |
6841 | } | |
6842 | else | |
6843 | { | |
6844 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6845 | the stub. A complaint has already been logged. There's | |
6846 | not much more we can do except pass on the stub DIE to | |
6847 | die_reader_func. We don't want to throw an error on bad | |
6848 | debug info. */ | |
3019eac3 DE |
6849 | } |
6850 | } | |
c0ab21c2 | 6851 | } |
3019eac3 | 6852 | |
6751ebae TT |
6853 | void |
6854 | cutu_reader::keep () | |
c0ab21c2 | 6855 | { |
b0c7bfa9 | 6856 | /* Done, clean up. */ |
6751ebae TT |
6857 | gdb_assert (!dummy_p); |
6858 | if (m_new_cu != NULL) | |
348e048f | 6859 | { |
7188ed02 | 6860 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 6861 | now. */ |
7188ed02 SM |
6862 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
6863 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 6864 | } |
dee91e82 DE |
6865 | } |
6866 | ||
18a8505e AT |
6867 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6868 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6869 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6870 | |
6871 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6872 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6873 | |
6874 | We fill in THIS_CU->length. | |
6875 | ||
dee91e82 | 6876 | THIS_CU->cu is always freed when done. |
3019eac3 | 6877 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6878 | to care whether it refers to the "main" CU or the DWO CU. |
6879 | ||
6880 | When parent_cu is passed, it is used to provide a default value for | |
6881 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6882 | |
ab432490 | 6883 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 6884 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
6885 | struct dwarf2_cu *parent_cu, |
6886 | struct dwo_file *dwo_file) | |
6887 | : die_reader_specs {}, | |
6888 | m_this_cu (this_cu) | |
dee91e82 | 6889 | { |
976ca316 | 6890 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 6891 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6892 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6893 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6894 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6895 | |
b4f54984 | 6896 | if (dwarf_die_debug) |
9d8780f0 | 6897 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6898 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6899 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6900 | |
976ca316 | 6901 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 6902 | |
33e80786 DE |
6903 | abbrev_section = (dwo_file != NULL |
6904 | ? &dwo_file->sections.abbrev | |
6905 | : get_abbrev_section_for_cu (this_cu)); | |
6906 | ||
dee91e82 | 6907 | /* This is cheap if the section is already read in. */ |
96b79293 | 6908 | section->read (objfile); |
dee91e82 | 6909 | |
976ca316 | 6910 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 6911 | |
9c541725 | 6912 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
6913 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
6914 | section, abbrev_section, info_ptr, | |
43988095 JK |
6915 | (this_cu->is_debug_types |
6916 | ? rcuh_kind::TYPE | |
6917 | : rcuh_kind::COMPILE)); | |
dee91e82 | 6918 | |
18a8505e AT |
6919 | if (parent_cu != nullptr) |
6920 | { | |
c0ab21c2 TT |
6921 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
6922 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 6923 | } |
4057dfde | 6924 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
6925 | |
6926 | /* Skip dummy compilation units. */ | |
6927 | if (info_ptr >= begin_info_ptr + this_cu->length | |
6928 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
6929 | { |
6930 | dummy_p = true; | |
6931 | return; | |
6932 | } | |
72bf9492 | 6933 | |
606decb2 | 6934 | abbrev_section->read (objfile); |
c0ab21c2 | 6935 | m_abbrev_table_holder |
606decb2 | 6936 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 6937 | |
c0ab21c2 TT |
6938 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
6939 | m_abbrev_table_holder.get ()); | |
3e225074 | 6940 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
6941 | } |
6942 | ||
0018ea6f DE |
6943 | \f |
6944 | /* Type Unit Groups. | |
dee91e82 | 6945 | |
0018ea6f DE |
6946 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
6947 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
6948 | so that all types coming from the same compilation (.o file) are grouped | |
6949 | together. A future step could be to put the types in the same symtab as | |
6950 | the CU the types ultimately came from. */ | |
ff013f42 | 6951 | |
f4dc4d17 DE |
6952 | static hashval_t |
6953 | hash_type_unit_group (const void *item) | |
6954 | { | |
9a3c8263 SM |
6955 | const struct type_unit_group *tu_group |
6956 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 6957 | |
094b34ac | 6958 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 6959 | } |
348e048f DE |
6960 | |
6961 | static int | |
f4dc4d17 | 6962 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 6963 | { |
9a3c8263 SM |
6964 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
6965 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 6966 | |
094b34ac | 6967 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 6968 | } |
348e048f | 6969 | |
f4dc4d17 DE |
6970 | /* Allocate a hash table for type unit groups. */ |
6971 | ||
eaa5fa8b | 6972 | static htab_up |
298e9637 | 6973 | allocate_type_unit_groups_table () |
f4dc4d17 | 6974 | { |
eaa5fa8b TT |
6975 | return htab_up (htab_create_alloc (3, |
6976 | hash_type_unit_group, | |
6977 | eq_type_unit_group, | |
0d305d5c TT |
6978 | [] (void *arg) |
6979 | { | |
6980 | type_unit_group *grp | |
6981 | = (type_unit_group *) arg; | |
6982 | delete grp; | |
6983 | }, | |
6984 | xcalloc, xfree)); | |
f4dc4d17 | 6985 | } |
dee91e82 | 6986 | |
f4dc4d17 DE |
6987 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
6988 | partial symtabs. We combine several TUs per psymtab to not let the size | |
6989 | of any one psymtab grow too big. */ | |
6990 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
6991 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 6992 | |
094b34ac | 6993 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
6994 | Create the type_unit_group object used to hold one or more TUs. */ |
6995 | ||
0d305d5c | 6996 | static std::unique_ptr<type_unit_group> |
094b34ac | 6997 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 6998 | { |
976ca316 SM |
6999 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7000 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
f4dc4d17 | 7001 | |
0d305d5c TT |
7002 | std::unique_ptr<type_unit_group> tu_group (new type_unit_group); |
7003 | tu_group->per_bfd = per_bfd; | |
f4dc4d17 | 7004 | |
1859c670 | 7005 | if (per_bfd->using_index) |
094b34ac | 7006 | { |
0d305d5c TT |
7007 | tu_group->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
7008 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7009 | } |
7010 | else | |
7011 | { | |
9c541725 | 7012 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7013 | dwarf2_psymtab *pst; |
528e1572 | 7014 | std::string name; |
094b34ac DE |
7015 | |
7016 | /* Give the symtab a useful name for debug purposes. */ | |
7017 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7018 | name = string_printf ("<type_units_%d>", |
7019 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7020 | else |
528e1572 | 7021 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7022 | |
0d305d5c TT |
7023 | pst = create_partial_symtab (tu_group.get (), per_objfile, |
7024 | name.c_str ()); | |
6d94535f | 7025 | pst->anonymous = true; |
094b34ac | 7026 | } |
f4dc4d17 | 7027 | |
094b34ac | 7028 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7029 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7030 | |
7031 | return tu_group; | |
7032 | } | |
7033 | ||
094b34ac DE |
7034 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7035 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7036 | |
7037 | static struct type_unit_group * | |
ff39bb5e | 7038 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7039 | { |
976ca316 SM |
7040 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7041 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7042 | struct type_unit_group *tu_group; |
7043 | void **slot; | |
7044 | unsigned int line_offset; | |
7045 | struct type_unit_group type_unit_group_for_lookup; | |
7046 | ||
976ca316 SM |
7047 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7048 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7049 | |
7050 | /* Do we need to create a new group, or can we use an existing one? */ | |
7051 | ||
529908cb | 7052 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7053 | { |
529908cb | 7054 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7055 | ++tu_stats->nr_symtab_sharers; |
7056 | } | |
7057 | else | |
7058 | { | |
7059 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7060 | We can do various things here like create one group per TU or | |
7061 | spread them over multiple groups to split up the expansion work. | |
7062 | To avoid worst case scenarios (too many groups or too large groups) | |
7063 | we, umm, group them in bunches. */ | |
7064 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7065 | | (tu_stats->nr_stmt_less_type_units | |
7066 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7067 | ++tu_stats->nr_stmt_less_type_units; | |
7068 | } | |
7069 | ||
094b34ac | 7070 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7071 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7072 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 | 7073 | &type_unit_group_for_lookup, INSERT); |
0d305d5c | 7074 | if (*slot == nullptr) |
f4dc4d17 | 7075 | { |
9c541725 | 7076 | sect_offset line_offset_struct = (sect_offset) line_offset; |
0d305d5c TT |
7077 | std::unique_ptr<type_unit_group> grp |
7078 | = create_type_unit_group (cu, line_offset_struct); | |
7079 | *slot = grp.release (); | |
f4dc4d17 DE |
7080 | ++tu_stats->nr_symtabs; |
7081 | } | |
7082 | ||
0d305d5c TT |
7083 | tu_group = (struct type_unit_group *) *slot; |
7084 | gdb_assert (tu_group != nullptr); | |
f4dc4d17 DE |
7085 | return tu_group; |
7086 | } | |
0018ea6f DE |
7087 | \f |
7088 | /* Partial symbol tables. */ | |
7089 | ||
7090 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7091 | ||
7092 | The caller must fill in the following details: | |
7093 | dirname, textlow, texthigh. */ | |
7094 | ||
891813be | 7095 | static dwarf2_psymtab * |
7aa104c4 SM |
7096 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7097 | dwarf2_per_objfile *per_objfile, | |
7098 | const char *name) | |
0018ea6f | 7099 | { |
0072c873 SM |
7100 | dwarf2_psymtab *pst |
7101 | = new dwarf2_psymtab (name, per_objfile->per_bfd->partial_symtabs.get (), | |
7102 | per_objfile->objfile->per_bfd, per_cu); | |
0018ea6f | 7103 | |
6d94535f | 7104 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7105 | |
7106 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7107 | per_cu->v.psymtab = pst; |
7108 | ||
7109 | return pst; | |
7110 | } | |
7111 | ||
c0ab21c2 | 7112 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7113 | |
7114 | static void | |
7115 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7116 | const gdb_byte *info_ptr, |
0018ea6f | 7117 | struct die_info *comp_unit_die, |
c0ab21c2 | 7118 | enum language pretend_language) |
0018ea6f DE |
7119 | { |
7120 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 | 7121 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
84685904 | 7122 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
7aa104c4 | 7123 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 7124 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7125 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7126 | CORE_ADDR baseaddr; |
7127 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7128 | dwarf2_psymtab *pst; |
3a2b436a | 7129 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7130 | const char *filename; |
0018ea6f | 7131 | |
0018ea6f DE |
7132 | gdb_assert (! per_cu->is_debug_types); |
7133 | ||
c0ab21c2 | 7134 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7135 | |
0018ea6f | 7136 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7137 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7138 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7139 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7140 | if (filename == NULL) | |
0018ea6f | 7141 | filename = ""; |
2e927613 TV |
7142 | else if (strcmp (filename, artificial) == 0) |
7143 | { | |
7144 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7145 | sect_offset_str (per_cu->sect_off), |
7146 | (char *) NULL)); | |
2e927613 TV |
7147 | filename = debug_filename.get (); |
7148 | } | |
0018ea6f | 7149 | |
7aa104c4 | 7150 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7151 | |
7152 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7153 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7154 | |
b3b3bada | 7155 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7156 | |
7157 | dwarf2_find_base_address (comp_unit_die, cu); | |
7158 | ||
7159 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7160 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7161 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7162 | &best_highpc, cu, pst); | |
7163 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7164 | { |
7165 | CORE_ADDR low | |
7166 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7167 | - baseaddr); | |
7168 | CORE_ADDR high | |
7169 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7170 | - baseaddr - 1); | |
7171 | /* Store the contiguous range if it is not empty; it can be | |
7172 | empty for CUs with no code. */ | |
84685904 | 7173 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 7174 | low, high, pst); |
79748972 | 7175 | } |
0018ea6f DE |
7176 | |
7177 | /* Check if comp unit has_children. | |
7178 | If so, read the rest of the partial symbols from this comp unit. | |
7179 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7180 | if (comp_unit_die->has_children) |
0018ea6f DE |
7181 | { |
7182 | struct partial_die_info *first_die; | |
7183 | CORE_ADDR lowpc, highpc; | |
7184 | ||
7185 | lowpc = ((CORE_ADDR) -1); | |
7186 | highpc = ((CORE_ADDR) 0); | |
7187 | ||
7188 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7189 | ||
7190 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7191 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7192 | |
7193 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7194 | complaints from `maint check'. */ | |
7195 | if (lowpc == ((CORE_ADDR) -1)) | |
7196 | lowpc = highpc; | |
7197 | ||
7198 | /* If the compilation unit didn't have an explicit address range, | |
7199 | then use the information extracted from its child dies. */ | |
e385593e | 7200 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7201 | { |
7202 | best_lowpc = lowpc; | |
7203 | best_highpc = highpc; | |
7204 | } | |
7205 | } | |
4ae976d1 | 7206 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7207 | best_lowpc + baseaddr) |
7208 | - baseaddr); | |
4ae976d1 | 7209 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7210 | best_highpc + baseaddr) |
7211 | - baseaddr); | |
0018ea6f | 7212 | |
ae7754b2 | 7213 | pst->end (); |
0018ea6f | 7214 | |
ae640021 | 7215 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7216 | { |
7217 | int i; | |
ae640021 | 7218 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7219 | |
7220 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7221 | post-pass. */ | |
7222 | pst->number_of_dependencies = len; | |
a9342b62 | 7223 | pst->dependencies |
84685904 | 7224 | = per_bfd->partial_symtabs->allocate_dependencies (len); |
ae640021 AB |
7225 | for (i = 0; i < len; ++i) |
7226 | { | |
7227 | pst->dependencies[i] | |
7228 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7229 | } | |
0018ea6f | 7230 | |
ae640021 | 7231 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7232 | } |
7233 | ||
7234 | /* Get the list of files included in the current compilation unit, | |
7235 | and build a psymtab for each of them. */ | |
7236 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7237 | ||
6f738b01 SM |
7238 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7239 | ", %d global, %d static syms", | |
7240 | per_cu->is_debug_types ? "type" : "comp", | |
7241 | sect_offset_str (per_cu->sect_off), | |
7242 | paddress (gdbarch, pst->text_low (objfile)), | |
7243 | paddress (gdbarch, pst->text_high (objfile)), | |
7244 | (int) pst->global_psymbols.size (), | |
7245 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7246 | } |
7247 | ||
7248 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7249 | Process compilation unit THIS_CU for a psymtab. */ | |
7250 | ||
7251 | static void | |
ab432490 SM |
7252 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7253 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7254 | bool want_partial_unit, |
b93601f3 | 7255 | enum language pretend_language) |
0018ea6f DE |
7256 | { |
7257 | /* If this compilation unit was already read in, free the | |
7258 | cached copy in order to read it in again. This is | |
7259 | necessary because we skipped some symbols when we first | |
7260 | read in the compilation unit (see load_partial_dies). | |
7261 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7262 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7263 | |
2e671100 | 7264 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7265 | |
58990295 TV |
7266 | switch (reader.comp_unit_die->tag) |
7267 | { | |
7268 | case DW_TAG_compile_unit: | |
7269 | this_cu->unit_type = DW_UT_compile; | |
7270 | break; | |
7271 | case DW_TAG_partial_unit: | |
7272 | this_cu->unit_type = DW_UT_partial; | |
7273 | break; | |
e77b0004 TV |
7274 | case DW_TAG_type_unit: |
7275 | this_cu->unit_type = DW_UT_type; | |
7276 | break; | |
58990295 | 7277 | default: |
702cf3f5 AB |
7278 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), |
7279 | dwarf_tag_name (reader.comp_unit_die->tag), | |
7280 | sect_offset_str (reader.cu->per_cu->sect_off), | |
7281 | objfile_name (per_objfile->objfile)); | |
58990295 TV |
7282 | } |
7283 | ||
c0ab21c2 | 7284 | if (reader.dummy_p) |
f1902523 | 7285 | { |
c0ab21c2 | 7286 | /* Nothing. */ |
f1902523 | 7287 | } |
c0ab21c2 | 7288 | else if (this_cu->is_debug_types) |
3e225074 TT |
7289 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7290 | reader.comp_unit_die); | |
135f5437 TT |
7291 | else if (want_partial_unit |
7292 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7293 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7294 | reader.comp_unit_die, | |
c0ab21c2 | 7295 | pretend_language); |
0018ea6f | 7296 | |
7188ed02 | 7297 | this_cu->lang = reader.cu->language; |
58990295 | 7298 | |
0018ea6f | 7299 | /* Age out any secondary CUs. */ |
7188ed02 | 7300 | per_objfile->age_comp_units (); |
0018ea6f | 7301 | } |
f4dc4d17 DE |
7302 | |
7303 | /* Reader function for build_type_psymtabs. */ | |
7304 | ||
7305 | static void | |
7306 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7307 | const gdb_byte *info_ptr, |
3e225074 | 7308 | struct die_info *type_unit_die) |
f4dc4d17 | 7309 | { |
976ca316 | 7310 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7311 | struct dwarf2_cu *cu = reader->cu; |
7312 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7313 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7314 | struct type_unit_group *tu_group; |
7315 | struct attribute *attr; | |
7316 | struct partial_die_info *first_die; | |
7317 | CORE_ADDR lowpc, highpc; | |
891813be | 7318 | dwarf2_psymtab *pst; |
f4dc4d17 | 7319 | |
0186c6a7 DE |
7320 | gdb_assert (per_cu->is_debug_types); |
7321 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7322 | |
3e225074 | 7323 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7324 | return; |
7325 | ||
052c8bb8 | 7326 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7327 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7328 | |
df07e2c7 | 7329 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7330 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7331 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7332 | |
7333 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7334 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7335 | pst->anonymous = true; |
f4dc4d17 DE |
7336 | |
7337 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7338 | ||
7339 | lowpc = (CORE_ADDR) -1; | |
7340 | highpc = (CORE_ADDR) 0; | |
7341 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7342 | ||
ae7754b2 | 7343 | pst->end (); |
f4dc4d17 DE |
7344 | } |
7345 | ||
73051182 DE |
7346 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7347 | ||
7348 | struct tu_abbrev_offset | |
7349 | { | |
b2bdb8cf SM |
7350 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7351 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7352 | {} | |
7353 | ||
7354 | signatured_type *sig_type; | |
73051182 DE |
7355 | sect_offset abbrev_offset; |
7356 | }; | |
7357 | ||
b8efb248 | 7358 | /* Helper routine for build_type_psymtabs, passed to std::sort. */ |
73051182 | 7359 | |
484cf504 TT |
7360 | static bool |
7361 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7362 | const struct tu_abbrev_offset &b) | |
73051182 | 7363 | { |
484cf504 | 7364 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7365 | } |
7366 | ||
7367 | /* Efficiently read all the type units. | |
73051182 DE |
7368 | |
7369 | The efficiency is because we sort TUs by the abbrev table they use and | |
7370 | only read each abbrev table once. In one program there are 200K TUs | |
7371 | sharing 8K abbrev tables. | |
7372 | ||
7373 | The main purpose of this function is to support building the | |
5989a64e | 7374 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7375 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7376 | can collapse the search space by grouping them by stmt_list. | |
7377 | The savings can be significant, in the same program from above the 200K TUs | |
7378 | share 8K stmt_list tables. | |
7379 | ||
7380 | FUNC is expected to call get_type_unit_group, which will create the | |
7381 | struct type_unit_group if necessary and add it to | |
5989a64e | 7382 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7383 | |
7384 | static void | |
b8efb248 | 7385 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
73051182 | 7386 | { |
976ca316 | 7387 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7388 | abbrev_table_up abbrev_table; |
73051182 | 7389 | sect_offset abbrev_offset; |
73051182 DE |
7390 | |
7391 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7392 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7393 | |
91eea9cc | 7394 | if (per_objfile->per_bfd->tu_stats.nr_tus == 0) |
73051182 DE |
7395 | return; |
7396 | ||
7397 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7398 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7399 | read each abbrev table in. | |
7400 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7401 | This is simpler and efficient enough for now. | |
7402 | ||
7403 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7404 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7405 | stmt_list value too so in practice this should work well. | |
7406 | ||
7407 | The basic algorithm here is: | |
7408 | ||
7409 | sort TUs by abbrev table | |
7410 | for each TU with same abbrev table: | |
7411 | read abbrev table if first user | |
7412 | read TU top level DIE | |
7413 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7414 | call FUNC */ | |
7415 | ||
6f738b01 | 7416 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 | 7417 | |
91eea9cc | 7418 | /* Sort in a separate table to maintain the order of all_comp_units |
73051182 | 7419 | for .gdb_index: TU indices directly index all_type_units. */ |
b2bdb8cf | 7420 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
91eea9cc | 7421 | sorted_by_abbrev.reserve (per_objfile->per_bfd->tu_stats.nr_tus); |
b2bdb8cf | 7422 | |
91eea9cc TT |
7423 | for (const auto &cu : per_objfile->per_bfd->all_comp_units) |
7424 | { | |
7425 | if (cu->is_debug_types) | |
7426 | { | |
7427 | auto sig_type = static_cast<signatured_type *> (cu.get ()); | |
7428 | sorted_by_abbrev.emplace_back | |
7429 | (sig_type, read_abbrev_offset (per_objfile, sig_type->section, | |
7430 | sig_type->sect_off)); | |
7431 | } | |
7432 | } | |
73051182 | 7433 | |
484cf504 TT |
7434 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7435 | sort_tu_by_abbrev_offset); | |
73051182 | 7436 | |
9c541725 | 7437 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7438 | |
b2bdb8cf | 7439 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7440 | { |
73051182 DE |
7441 | /* Switch to the next abbrev table if necessary. */ |
7442 | if (abbrev_table == NULL | |
b2bdb8cf | 7443 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7444 | { |
b2bdb8cf | 7445 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7446 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7447 | abbrev_table = |
606decb2 | 7448 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7449 | ++tu_stats->nr_uniq_abbrev_tables; |
7450 | } | |
7451 | ||
0d305d5c | 7452 | cutu_reader reader (tu.sig_type, per_objfile, |
2e671100 | 7453 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7454 | if (!reader.dummy_p) |
7455 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7456 | reader.comp_unit_die); |
73051182 | 7457 | } |
6aa5f3a6 | 7458 | } |
73051182 | 7459 | |
6aa5f3a6 DE |
7460 | /* Print collected type unit statistics. */ |
7461 | ||
7462 | static void | |
976ca316 | 7463 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7464 | { |
976ca316 | 7465 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7466 | |
6f738b01 | 7467 | dwarf_read_debug_printf ("Type unit statistics:"); |
91eea9cc | 7468 | dwarf_read_debug_printf (" %d TUs", tu_stats->nr_tus); |
6f738b01 SM |
7469 | dwarf_read_debug_printf (" %d uniq abbrev tables", |
7470 | tu_stats->nr_uniq_abbrev_tables); | |
7471 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7472 | tu_stats->nr_symtabs); | |
7473 | dwarf_read_debug_printf (" %d symtab sharers", | |
7474 | tu_stats->nr_symtab_sharers); | |
7475 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7476 | tu_stats->nr_stmt_less_type_units); | |
7477 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7478 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7479 | } |
7480 | ||
f4dc4d17 DE |
7481 | /* Traversal function for build_type_psymtabs. */ |
7482 | ||
7483 | static int | |
7484 | build_type_psymtab_dependencies (void **slot, void *info) | |
7485 | { | |
976ca316 | 7486 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
84685904 | 7487 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
f4dc4d17 | 7488 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
0d305d5c | 7489 | dwarf2_psymtab *pst = tu_group->v.psymtab; |
df07e2c7 | 7490 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7491 | int i; |
7492 | ||
7493 | gdb_assert (len > 0); | |
0d305d5c | 7494 | gdb_assert (tu_group->type_unit_group_p ()); |
f4dc4d17 DE |
7495 | |
7496 | pst->number_of_dependencies = len; | |
84685904 | 7497 | pst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7498 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7499 | { |
df07e2c7 | 7500 | struct signatured_type *iter = tu_group->tus->at (i); |
0d305d5c TT |
7501 | gdb_assert (iter->is_debug_types); |
7502 | pst->dependencies[i] = iter->v.psymtab; | |
796a7ff8 | 7503 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7504 | } |
7505 | ||
df07e2c7 AB |
7506 | delete tu_group->tus; |
7507 | tu_group->tus = nullptr; | |
348e048f DE |
7508 | |
7509 | return 1; | |
7510 | } | |
7511 | ||
6aa5f3a6 DE |
7512 | /* Traversal function for process_skeletonless_type_unit. |
7513 | Read a TU in a DWO file and build partial symbols for it. */ | |
7514 | ||
7515 | static int | |
7516 | process_skeletonless_type_unit (void **slot, void *info) | |
7517 | { | |
7518 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7519 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7520 | struct signatured_type find_entry, *entry; |
7521 | ||
7522 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7523 | ||
976ca316 SM |
7524 | if (per_objfile->per_bfd->signatured_types == NULL) |
7525 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7526 | |
7527 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7528 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7529 | &find_entry, INSERT); |
6aa5f3a6 DE |
7530 | /* If we've already seen this type there's nothing to do. What's happening |
7531 | is we're doing our own version of comdat-folding here. */ | |
7532 | if (*slot != NULL) | |
7533 | return 1; | |
7534 | ||
b8efb248 | 7535 | /* This does the job that create_all_comp_units would have done for |
6aa5f3a6 | 7536 | this TU. */ |
976ca316 SM |
7537 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7538 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7539 | *slot = entry; |
7540 | ||
b8efb248 | 7541 | /* This does the job that build_type_psymtabs would have done. */ |
0d305d5c | 7542 | cutu_reader reader (entry, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7543 | if (!reader.dummy_p) |
7544 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7545 | reader.comp_unit_die); |
6aa5f3a6 DE |
7546 | |
7547 | return 1; | |
7548 | } | |
7549 | ||
7550 | /* Traversal function for process_skeletonless_type_units. */ | |
7551 | ||
7552 | static int | |
7553 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7554 | { | |
7555 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7556 | ||
7557 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7558 | htab_traverse_noresize (dwo_file->tus.get (), |
7559 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7560 | |
7561 | return 1; | |
7562 | } | |
7563 | ||
7564 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7565 | This is needed in case a TU was emitted without its skeleton. | |
7566 | Note: This can't be done until we know what all the DWO files are. */ | |
7567 | ||
7568 | static void | |
976ca316 | 7569 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
7570 | { |
7571 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
7572 | if (get_dwp_file (per_objfile) == NULL |
7573 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 7574 | { |
976ca316 | 7575 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7576 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 7577 | per_objfile); |
6aa5f3a6 | 7578 | } |
348e048f DE |
7579 | } |
7580 | ||
ed2dc618 | 7581 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7582 | |
7583 | static void | |
976ca316 | 7584 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 7585 | { |
0d305d5c | 7586 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 7587 | { |
891813be | 7588 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7589 | |
36586728 TT |
7590 | if (pst == NULL) |
7591 | continue; | |
7592 | ||
b76e467d | 7593 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7594 | { |
7595 | /* Set the 'user' field only if it is not already set. */ | |
7596 | if (pst->dependencies[j]->user == NULL) | |
7597 | pst->dependencies[j]->user = pst; | |
7598 | } | |
7599 | } | |
7600 | } | |
7601 | ||
93311388 DE |
7602 | /* Build the partial symbol table by doing a quick pass through the |
7603 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7604 | |
93311388 | 7605 | static void |
976ca316 | 7606 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 7607 | { |
976ca316 | 7608 | struct objfile *objfile = per_objfile->objfile; |
84685904 | 7609 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
93311388 | 7610 | |
6f738b01 SM |
7611 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
7612 | objfile_name (objfile)); | |
45cfd468 | 7613 | |
76935768 | 7614 | scoped_restore restore_reading_psyms |
bab287cd | 7615 | = make_scoped_restore (&per_bfd->reading_partial_symbols, true); |
98bfdba5 | 7616 | |
84685904 | 7617 | per_bfd->info.read (objfile); |
91c24f0a | 7618 | |
93311388 DE |
7619 | /* Any cached compilation units will be linked by the per-objfile |
7620 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 7621 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 7622 | |
976ca316 | 7623 | create_all_comp_units (per_objfile); |
b8efb248 | 7624 | build_type_psymtabs (per_objfile); |
c906108c | 7625 | |
60606b2c TT |
7626 | /* Create a temporary address map on a temporary obstack. We later |
7627 | copy this to the final obstack. */ | |
8268c778 | 7628 | auto_obstack temp_obstack; |
791afaa2 TT |
7629 | |
7630 | scoped_restore save_psymtabs_addrmap | |
84685904 | 7631 | = make_scoped_restore (&per_bfd->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7632 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7633 | |
0d305d5c | 7634 | for (const auto &per_cu : per_bfd->all_comp_units) |
3d5afab3 TV |
7635 | { |
7636 | if (per_cu->v.psymtab != NULL) | |
7637 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7638 | continue; | |
0d305d5c | 7639 | process_psymtab_comp_unit (per_cu.get (), per_objfile, false, |
ab432490 | 7640 | language_minimal); |
3d5afab3 | 7641 | } |
ff013f42 | 7642 | |
6aa5f3a6 | 7643 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 7644 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
7645 | |
7646 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
84685904 | 7647 | if (per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7648 | { |
84685904 | 7649 | htab_traverse_noresize (per_bfd->type_unit_groups.get (), |
976ca316 | 7650 | build_type_psymtab_dependencies, per_objfile); |
6aa5f3a6 DE |
7651 | } |
7652 | ||
6f738b01 | 7653 | if (dwarf_read_debug > 0) |
976ca316 | 7654 | print_tu_stats (per_objfile); |
6aa5f3a6 | 7655 | |
976ca316 | 7656 | set_partial_user (per_objfile); |
95554aad | 7657 | |
84685904 TT |
7658 | per_bfd->partial_symtabs->psymtabs_addrmap |
7659 | = addrmap_create_fixed (per_bfd->partial_symtabs->psymtabs_addrmap, | |
7660 | per_bfd->partial_symtabs->obstack ()); | |
791afaa2 TT |
7661 | /* At this point we want to keep the address map. */ |
7662 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7663 | |
6f738b01 SM |
7664 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
7665 | objfile_name (objfile)); | |
ae038cb0 DJ |
7666 | } |
7667 | ||
dee91e82 DE |
7668 | /* Load the partial DIEs for a secondary CU into memory. |
7669 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7670 | |
dee91e82 | 7671 | static void |
ab432490 | 7672 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
7673 | dwarf2_per_objfile *per_objfile, |
7674 | dwarf2_cu *existing_cu) | |
dee91e82 | 7675 | { |
2e671100 | 7676 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
7677 | |
7678 | if (!reader.dummy_p) | |
7679 | { | |
7680 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7681 | language_minimal); | |
7682 | ||
7683 | /* Check if comp unit has_children. | |
7684 | If so, read the rest of the partial symbols from this comp unit. | |
7685 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7686 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7687 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7688 | |
7689 | reader.keep (); | |
c0ab21c2 | 7690 | } |
ae038cb0 DJ |
7691 | } |
7692 | ||
ae038cb0 | 7693 | static void |
976ca316 | 7694 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 7695 | struct dwarf2_section_info *section, |
f1902523 | 7696 | struct dwarf2_section_info *abbrev_section, |
b8efb248 TT |
7697 | unsigned int is_dwz, |
7698 | htab_up &types_htab, | |
7699 | rcuh_kind section_kind) | |
ae038cb0 | 7700 | { |
d521ce57 | 7701 | const gdb_byte *info_ptr; |
976ca316 | 7702 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 7703 | |
6f738b01 SM |
7704 | dwarf_read_debug_printf ("Reading %s for %s", |
7705 | section->get_name (), | |
7706 | section->get_file_name ()); | |
bf6af496 | 7707 | |
96b79293 | 7708 | section->read (objfile); |
ae038cb0 | 7709 | |
36586728 | 7710 | info_ptr = section->buffer; |
6e70227d | 7711 | |
36586728 | 7712 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7713 | { |
0d305d5c | 7714 | std::unique_ptr<dwarf2_per_cu_data> this_cu; |
ae038cb0 | 7715 | |
9c541725 | 7716 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7717 | |
f1902523 | 7718 | comp_unit_head cu_header; |
976ca316 | 7719 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 7720 | abbrev_section, info_ptr, |
b8efb248 | 7721 | section_kind); |
ae038cb0 DJ |
7722 | |
7723 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 7724 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 7725 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
7726 | else |
7727 | { | |
b8efb248 TT |
7728 | if (types_htab == nullptr) |
7729 | types_htab = allocate_signatured_type_table (); | |
7730 | ||
976ca316 | 7731 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b8efb248 | 7732 | signatured_type *sig_ptr = sig_type.get (); |
f1902523 JK |
7733 | sig_type->signature = cu_header.signature; |
7734 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
0d305d5c | 7735 | this_cu = std::move (sig_type); |
b8efb248 TT |
7736 | |
7737 | void **slot = htab_find_slot (types_htab.get (), sig_ptr, INSERT); | |
7738 | gdb_assert (slot != nullptr); | |
7739 | if (*slot != nullptr) | |
7740 | complaint (_("debug type entry at offset %s is duplicate to" | |
7741 | " the entry at offset %s, signature %s"), | |
7742 | sect_offset_str (sect_off), | |
7743 | sect_offset_str (sig_ptr->sect_off), | |
7744 | hex_string (sig_ptr->signature)); | |
7745 | *slot = sig_ptr; | |
f1902523 JK |
7746 | } |
7747 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7748 | this_cu->sect_off = sect_off; |
f1902523 | 7749 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7750 | this_cu->is_dwz = is_dwz; |
8a0459fd | 7751 | this_cu->section = section; |
ae038cb0 | 7752 | |
ae038cb0 | 7753 | info_ptr = info_ptr + this_cu->length; |
0d305d5c | 7754 | per_objfile->per_bfd->all_comp_units.push_back (std::move (this_cu)); |
ae038cb0 | 7755 | } |
36586728 TT |
7756 | } |
7757 | ||
7758 | /* Create a list of all compilation units in OBJFILE. | |
7759 | This is only done for -readnow and building partial symtabs. */ | |
7760 | ||
7761 | static void | |
976ca316 | 7762 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 7763 | { |
b8efb248 TT |
7764 | htab_up types_htab; |
7765 | ||
976ca316 | 7766 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, |
b8efb248 TT |
7767 | &per_objfile->per_bfd->abbrev, 0, |
7768 | types_htab, rcuh_kind::COMPILE); | |
7769 | for (dwarf2_section_info §ion : per_objfile->per_bfd->types) | |
7770 | read_comp_units_from_section (per_objfile, §ion, | |
7771 | &per_objfile->per_bfd->abbrev, 0, | |
7772 | types_htab, rcuh_kind::TYPE); | |
36586728 | 7773 | |
976ca316 | 7774 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 7775 | if (dwz != NULL) |
b8efb248 TT |
7776 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1, |
7777 | types_htab, rcuh_kind::COMPILE); | |
7778 | ||
7779 | per_objfile->per_bfd->signatured_types = std::move (types_htab); | |
c906108c SS |
7780 | } |
7781 | ||
5734ee8b | 7782 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7783 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7784 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7785 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7786 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7787 | |
72bf9492 DJ |
7788 | static void |
7789 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7790 | CORE_ADDR *highpc, int set_addrmap, |
7791 | struct dwarf2_cu *cu) | |
c906108c | 7792 | { |
72bf9492 | 7793 | struct partial_die_info *pdi; |
c906108c | 7794 | |
91c24f0a DC |
7795 | /* Now, march along the PDI's, descending into ones which have |
7796 | interesting children but skipping the children of the other ones, | |
7797 | until we reach the end of the compilation unit. */ | |
c906108c | 7798 | |
72bf9492 | 7799 | pdi = first_die; |
91c24f0a | 7800 | |
72bf9492 DJ |
7801 | while (pdi != NULL) |
7802 | { | |
52356b79 | 7803 | pdi->fixup (cu); |
c906108c | 7804 | |
f55ee35c | 7805 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7806 | children, so we need to look at them. Ditto for anonymous |
7807 | enums. */ | |
933c6fe4 | 7808 | |
7d00ffec | 7809 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7810 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7811 | || pdi->tag == DW_TAG_imported_unit |
7812 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7813 | { |
72bf9492 | 7814 | switch (pdi->tag) |
c906108c SS |
7815 | { |
7816 | case DW_TAG_subprogram: | |
b1dc1806 | 7817 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7818 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
7819 | if (cu->language == language_cplus) |
7820 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
7821 | set_addrmap, cu); | |
c906108c | 7822 | break; |
72929c62 | 7823 | case DW_TAG_constant: |
c906108c SS |
7824 | case DW_TAG_variable: |
7825 | case DW_TAG_typedef: | |
91c24f0a | 7826 | case DW_TAG_union_type: |
317d2668 TV |
7827 | if (!pdi->is_declaration |
7828 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 7829 | { |
72bf9492 | 7830 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7831 | } |
7832 | break; | |
c906108c | 7833 | case DW_TAG_class_type: |
680b30c7 | 7834 | case DW_TAG_interface_type: |
c906108c | 7835 | case DW_TAG_structure_type: |
72bf9492 | 7836 | if (!pdi->is_declaration) |
c906108c | 7837 | { |
72bf9492 | 7838 | add_partial_symbol (pdi, cu); |
c906108c | 7839 | } |
b7fee5a3 KS |
7840 | if ((cu->language == language_rust |
7841 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7842 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7843 | set_addrmap, cu); | |
c906108c | 7844 | break; |
91c24f0a | 7845 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7846 | if (!pdi->is_declaration) |
7847 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7848 | break; |
7849 | case DW_TAG_base_type: | |
dda83cd7 | 7850 | case DW_TAG_subrange_type: |
c906108c | 7851 | /* File scope base type definitions are added to the partial |
dda83cd7 | 7852 | symbol table. */ |
72bf9492 | 7853 | add_partial_symbol (pdi, cu); |
c906108c | 7854 | break; |
d9fa45fe | 7855 | case DW_TAG_namespace: |
cdc07690 | 7856 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7857 | break; |
5d7cb8df | 7858 | case DW_TAG_module: |
59c35742 AB |
7859 | if (!pdi->is_declaration) |
7860 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7861 | break; |
95554aad TT |
7862 | case DW_TAG_imported_unit: |
7863 | { | |
7864 | struct dwarf2_per_cu_data *per_cu; | |
7865 | ||
f4dc4d17 DE |
7866 | /* For now we don't handle imported units in type units. */ |
7867 | if (cu->per_cu->is_debug_types) | |
7868 | { | |
7869 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7870 | " supported in type units [in module %s]"), | |
5e22e966 | 7871 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
7872 | } |
7873 | ||
e3b94546 | 7874 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 7875 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
7876 | |
7877 | /* Go read the partial unit, if needed. */ | |
7878 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
7879 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
7880 | cu->language); | |
95554aad | 7881 | |
ae640021 | 7882 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7883 | } |
7884 | break; | |
74921315 KS |
7885 | case DW_TAG_imported_declaration: |
7886 | add_partial_symbol (pdi, cu); | |
7887 | break; | |
c906108c SS |
7888 | default: |
7889 | break; | |
7890 | } | |
7891 | } | |
7892 | ||
72bf9492 DJ |
7893 | /* If the die has a sibling, skip to the sibling. */ |
7894 | ||
7895 | pdi = pdi->die_sibling; | |
7896 | } | |
7897 | } | |
7898 | ||
7899 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7900 | |
72bf9492 | 7901 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7902 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7903 | Enumerators are an exception; they use the scope of their parent |
7904 | enumeration type, i.e. the name of the enumeration type is not | |
7905 | prepended to the enumerator. | |
91c24f0a | 7906 | |
72bf9492 DJ |
7907 | There are two complexities. One is DW_AT_specification; in this |
7908 | case "parent" means the parent of the target of the specification, | |
7909 | instead of the direct parent of the DIE. The other is compilers | |
7910 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7911 | the fully qualified name of structure types from their members' | |
7912 | linkage names. This must be done using the DIE's children rather | |
7913 | than the children of any DW_AT_specification target. We only need | |
7914 | to do this for structures at the top level, i.e. if the target of | |
7915 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
7916 | have a parent. */ | |
7917 | ||
7918 | /* Compute the scope prefix associated with PDI's parent, in | |
7919 | compilation unit CU. The result will be allocated on CU's | |
7920 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
7921 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 7922 | static const char * |
72bf9492 DJ |
7923 | partial_die_parent_scope (struct partial_die_info *pdi, |
7924 | struct dwarf2_cu *cu) | |
7925 | { | |
15d034d0 | 7926 | const char *grandparent_scope; |
72bf9492 | 7927 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 7928 | |
72bf9492 DJ |
7929 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
7930 | then this means the parent of the specification DIE. */ | |
7931 | ||
7932 | real_pdi = pdi; | |
72bf9492 | 7933 | while (real_pdi->has_specification) |
fb816e8b | 7934 | { |
122cf0f2 AB |
7935 | auto res = find_partial_die (real_pdi->spec_offset, |
7936 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
7937 | real_pdi = res.pdi; |
7938 | cu = res.cu; | |
7939 | } | |
72bf9492 DJ |
7940 | |
7941 | parent = real_pdi->die_parent; | |
7942 | if (parent == NULL) | |
7943 | return NULL; | |
7944 | ||
7945 | if (parent->scope_set) | |
7946 | return parent->scope; | |
7947 | ||
52356b79 | 7948 | parent->fixup (cu); |
72bf9492 | 7949 | |
10b3939b | 7950 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 7951 | |
acebe513 UW |
7952 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
7953 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
7954 | Work around this problem here. */ | |
7955 | if (cu->language == language_cplus | |
6e70227d | 7956 | && parent->tag == DW_TAG_namespace |
7d00ffec | 7957 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
7958 | && grandparent_scope == NULL) |
7959 | { | |
7960 | parent->scope = NULL; | |
7961 | parent->scope_set = 1; | |
7962 | return NULL; | |
7963 | } | |
7964 | ||
0a4b0913 | 7965 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
7966 | if (pdi->tag == DW_TAG_enumerator) |
7967 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
7968 | parent->scope = grandparent_scope; | |
7969 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 7970 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
7971 | || parent->tag == DW_TAG_structure_type |
7972 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 7973 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 7974 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
7975 | || parent->tag == DW_TAG_enumeration_type |
7976 | || (cu->language == language_fortran | |
7977 | && parent->tag == DW_TAG_subprogram | |
7978 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
7979 | { |
7980 | if (grandparent_scope == NULL) | |
7d00ffec | 7981 | parent->scope = parent->name (cu); |
72bf9492 | 7982 | else |
3e43a32a MS |
7983 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
7984 | grandparent_scope, | |
7d00ffec | 7985 | parent->name (cu), 0, cu); |
72bf9492 | 7986 | } |
72bf9492 DJ |
7987 | else |
7988 | { | |
7989 | /* FIXME drow/2004-04-01: What should we be doing with | |
7990 | function-local names? For partial symbols, we should probably be | |
7991 | ignoring them. */ | |
fa9c3fa0 TT |
7992 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
7993 | dwarf_tag_name (parent->tag), | |
7994 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 7995 | parent->scope = grandparent_scope; |
c906108c SS |
7996 | } |
7997 | ||
72bf9492 DJ |
7998 | parent->scope_set = 1; |
7999 | return parent->scope; | |
8000 | } | |
8001 | ||
8002 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8003 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8004 | |
43816ebc | 8005 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8006 | partial_die_full_name (struct partial_die_info *pdi, |
8007 | struct dwarf2_cu *cu) | |
8008 | { | |
15d034d0 | 8009 | const char *parent_scope; |
72bf9492 | 8010 | |
98bfdba5 PA |
8011 | /* If this is a template instantiation, we can not work out the |
8012 | template arguments from partial DIEs. So, unfortunately, we have | |
8013 | to go through the full DIEs. At least any work we do building | |
8014 | types here will be reused if full symbols are loaded later. */ | |
8015 | if (pdi->has_template_arguments) | |
8016 | { | |
52356b79 | 8017 | pdi->fixup (cu); |
98bfdba5 | 8018 | |
7d00ffec | 8019 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8020 | { |
8021 | struct die_info *die; | |
8022 | struct attribute attr; | |
8023 | struct dwarf2_cu *ref_cu = cu; | |
8024 | ||
b64f50a1 | 8025 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8026 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8027 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8028 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8029 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8030 | ||
43816ebc | 8031 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8032 | } |
8033 | } | |
8034 | ||
72bf9492 DJ |
8035 | parent_scope = partial_die_parent_scope (pdi, cu); |
8036 | if (parent_scope == NULL) | |
8037 | return NULL; | |
8038 | else | |
43816ebc | 8039 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8040 | pdi->name (cu), |
8041 | 0, cu)); | |
c906108c SS |
8042 | } |
8043 | ||
8044 | static void | |
72bf9492 | 8045 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8046 | { |
976ca316 SM |
8047 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8048 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8049 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8050 | CORE_ADDR addr = 0; |
15d034d0 | 8051 | const char *actual_name = NULL; |
e142c38c DJ |
8052 | CORE_ADDR baseaddr; |
8053 | ||
b3b3bada | 8054 | baseaddr = objfile->text_section_offset (); |
c906108c | 8055 | |
43816ebc TT |
8056 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8057 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8058 | if (built_actual_name != NULL) |
43816ebc | 8059 | actual_name = built_actual_name.get (); |
63d06c5c | 8060 | |
72bf9492 | 8061 | if (actual_name == NULL) |
7d00ffec | 8062 | actual_name = pdi->name (cu); |
72bf9492 | 8063 | |
76e288d1 TT |
8064 | partial_symbol psymbol; |
8065 | memset (&psymbol, 0, sizeof (psymbol)); | |
8066 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8067 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8068 | |
8069 | /* The code below indicates that the psymbol should be installed by | |
8070 | setting this. */ | |
8071 | gdb::optional<psymbol_placement> where; | |
8072 | ||
c906108c SS |
8073 | switch (pdi->tag) |
8074 | { | |
b1dc1806 | 8075 | case DW_TAG_inlined_subroutine: |
c906108c | 8076 | case DW_TAG_subprogram: |
79748972 TT |
8077 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8078 | - baseaddr); | |
0a4b0913 AB |
8079 | if (pdi->is_external |
8080 | || cu->language == language_ada | |
8081 | || (cu->language == language_fortran | |
8082 | && pdi->die_parent != NULL | |
8083 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8084 | { | |
dda83cd7 SM |
8085 | /* Normally, only "external" DIEs are part of the global scope. |
8086 | But in Ada and Fortran, we want to be able to access nested | |
8087 | procedures globally. So all Ada and Fortran subprograms are | |
8088 | stored in the global scope. */ | |
76e288d1 | 8089 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8090 | } |
8091 | else | |
76e288d1 TT |
8092 | where = psymbol_placement::STATIC; |
8093 | ||
8094 | psymbol.domain = VAR_DOMAIN; | |
8095 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8096 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8097 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8098 | |
8099 | if (pdi->main_subprogram && actual_name != NULL) | |
8100 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8101 | break; |
72929c62 | 8102 | case DW_TAG_constant: |
76e288d1 TT |
8103 | psymbol.domain = VAR_DOMAIN; |
8104 | psymbol.aclass = LOC_STATIC; | |
8105 | where = (pdi->is_external | |
8106 | ? psymbol_placement::GLOBAL | |
8107 | : psymbol_placement::STATIC); | |
72929c62 | 8108 | break; |
c906108c | 8109 | case DW_TAG_variable: |
95554aad TT |
8110 | if (pdi->d.locdesc) |
8111 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8112 | |
95554aad | 8113 | if (pdi->d.locdesc |
caac4577 | 8114 | && addr == 0 |
976ca316 | 8115 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8116 | { |
8117 | /* A global or static variable may also have been stripped | |
8118 | out by the linker if unused, in which case its address | |
8119 | will be nullified; do not add such variables into partial | |
8120 | symbol table then. */ | |
8121 | } | |
8122 | else if (pdi->is_external) | |
c906108c SS |
8123 | { |
8124 | /* Global Variable. | |
8125 | Don't enter into the minimal symbol tables as there is | |
8126 | a minimal symbol table entry from the ELF symbols already. | |
8127 | Enter into partial symbol table if it has a location | |
8128 | descriptor or a type. | |
8129 | If the location descriptor is missing, new_symbol will create | |
8130 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8131 | be determined from the minimal symbol table whenever the variable | |
8132 | is referenced. | |
8133 | The address for the partial symbol table entry is not | |
8134 | used by GDB, but it comes in handy for debugging partial symbol | |
8135 | table building. */ | |
8136 | ||
95554aad | 8137 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8138 | { |
8139 | psymbol.domain = VAR_DOMAIN; | |
8140 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8141 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8142 | psymbol.ginfo.value.address = addr; |
8143 | where = psymbol_placement::GLOBAL; | |
8144 | } | |
c906108c SS |
8145 | } |
8146 | else | |
8147 | { | |
ff908ebf AW |
8148 | int has_loc = pdi->d.locdesc != NULL; |
8149 | ||
8150 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8151 | without location descriptors or constant values). */ | |
8152 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8153 | return; |
ff908ebf | 8154 | |
76e288d1 TT |
8155 | psymbol.domain = VAR_DOMAIN; |
8156 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8157 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8158 | if (has_loc) |
8159 | psymbol.ginfo.value.address = addr; | |
8160 | where = psymbol_placement::STATIC; | |
c906108c SS |
8161 | } |
8162 | break; | |
d8f62e84 | 8163 | case DW_TAG_array_type: |
c906108c SS |
8164 | case DW_TAG_typedef: |
8165 | case DW_TAG_base_type: | |
a02abb62 | 8166 | case DW_TAG_subrange_type: |
76e288d1 TT |
8167 | psymbol.domain = VAR_DOMAIN; |
8168 | psymbol.aclass = LOC_TYPEDEF; | |
8169 | where = psymbol_placement::STATIC; | |
c906108c | 8170 | break; |
74921315 | 8171 | case DW_TAG_imported_declaration: |
72bf9492 | 8172 | case DW_TAG_namespace: |
76e288d1 TT |
8173 | psymbol.domain = VAR_DOMAIN; |
8174 | psymbol.aclass = LOC_TYPEDEF; | |
8175 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8176 | break; |
530e8392 | 8177 | case DW_TAG_module: |
a5fd13a9 | 8178 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8179 | available without any name. If so, we skip the module as it |
8180 | doesn't bring any value. */ | |
a5fd13a9 | 8181 | if (actual_name != nullptr) |
76e288d1 TT |
8182 | { |
8183 | psymbol.domain = MODULE_DOMAIN; | |
8184 | psymbol.aclass = LOC_TYPEDEF; | |
8185 | where = psymbol_placement::GLOBAL; | |
8186 | } | |
530e8392 | 8187 | break; |
c906108c | 8188 | case DW_TAG_class_type: |
680b30c7 | 8189 | case DW_TAG_interface_type: |
c906108c SS |
8190 | case DW_TAG_structure_type: |
8191 | case DW_TAG_union_type: | |
8192 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8193 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8194 | about "Structure, Union, and Class Type Entries": "An incomplete |
8195 | structure, union or class type is represented by a structure, | |
8196 | union or class entry that does not have a byte size attribute | |
8197 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8198 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8199 | return; |
fa4028e9 | 8200 | |
63d06c5c DC |
8201 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8202 | static vs. global. */ | |
76e288d1 TT |
8203 | psymbol.domain = STRUCT_DOMAIN; |
8204 | psymbol.aclass = LOC_TYPEDEF; | |
8205 | where = (cu->language == language_cplus | |
8206 | ? psymbol_placement::GLOBAL | |
8207 | : psymbol_placement::STATIC); | |
c906108c SS |
8208 | break; |
8209 | case DW_TAG_enumerator: | |
76e288d1 TT |
8210 | psymbol.domain = VAR_DOMAIN; |
8211 | psymbol.aclass = LOC_CONST; | |
8212 | where = (cu->language == language_cplus | |
8213 | ? psymbol_placement::GLOBAL | |
8214 | : psymbol_placement::STATIC); | |
c906108c SS |
8215 | break; |
8216 | default: | |
8217 | break; | |
8218 | } | |
76e288d1 TT |
8219 | |
8220 | if (where.has_value ()) | |
8221 | { | |
f049a313 TT |
8222 | if (built_actual_name != nullptr) |
8223 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8224 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8225 | psymbol.ginfo.set_linkage_name (actual_name); | |
8226 | else | |
8227 | { | |
8228 | psymbol.ginfo.set_demangled_name (actual_name, | |
8229 | &objfile->objfile_obstack); | |
8230 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8231 | } | |
7b249e47 TT |
8232 | cu->per_cu->v.psymtab->add_psymbol |
8233 | (psymbol, *where, per_objfile->per_bfd->partial_symtabs.get (), | |
8234 | objfile); | |
76e288d1 | 8235 | } |
c906108c SS |
8236 | } |
8237 | ||
5c4e30ca DC |
8238 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8239 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8240 | the name of the enclosing namespace. */ | |
91c24f0a | 8241 | |
72bf9492 DJ |
8242 | static void |
8243 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8244 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8245 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8246 | { |
72bf9492 | 8247 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8248 | |
72bf9492 | 8249 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8250 | |
8251 | /* Now scan partial symbols in that namespace. */ | |
8252 | ||
91c24f0a | 8253 | if (pdi->has_children) |
cdc07690 | 8254 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8255 | } |
8256 | ||
5d7cb8df JK |
8257 | /* Read a partial die corresponding to a Fortran module. */ |
8258 | ||
8259 | static void | |
8260 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8261 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8262 | { |
530e8392 KB |
8263 | /* Add a symbol for the namespace. */ |
8264 | ||
8265 | add_partial_symbol (pdi, cu); | |
8266 | ||
f55ee35c | 8267 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8268 | |
8269 | if (pdi->has_children) | |
cdc07690 | 8270 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8271 | } |
8272 | ||
b1dc1806 XR |
8273 | /* Read a partial die corresponding to a subprogram or an inlined |
8274 | subprogram and create a partial symbol for that subprogram. | |
8275 | When the CU language allows it, this routine also defines a partial | |
8276 | symbol for each nested subprogram that this subprogram contains. | |
8277 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8278 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8279 | |
cdc07690 YQ |
8280 | PDI may also be a lexical block, in which case we simply search |
8281 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8282 | Again, this is only performed when the CU language allows this |
8283 | type of definitions. */ | |
8284 | ||
8285 | static void | |
8286 | add_partial_subprogram (struct partial_die_info *pdi, | |
8287 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8288 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8289 | { |
b1dc1806 | 8290 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8291 | { |
8292 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8293 | { |
8294 | if (pdi->lowpc < *lowpc) | |
8295 | *lowpc = pdi->lowpc; | |
8296 | if (pdi->highpc > *highpc) | |
8297 | *highpc = pdi->highpc; | |
cdc07690 | 8298 | if (set_addrmap) |
5734ee8b | 8299 | { |
5e22e966 | 8300 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 8301 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 8302 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8303 | CORE_ADDR baseaddr; |
b926417a TT |
8304 | CORE_ADDR this_highpc; |
8305 | CORE_ADDR this_lowpc; | |
5734ee8b | 8306 | |
b3b3bada | 8307 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8308 | this_lowpc |
8309 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8310 | pdi->lowpc + baseaddr) | |
8311 | - baseaddr); | |
8312 | this_highpc | |
8313 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8314 | pdi->highpc + baseaddr) | |
8315 | - baseaddr); | |
84685904 | 8316 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
b926417a | 8317 | this_lowpc, this_highpc - 1, |
9291a0cd | 8318 | cu->per_cu->v.psymtab); |
5734ee8b | 8319 | } |
dda83cd7 | 8320 | } |
481860b3 GB |
8321 | |
8322 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8323 | { | |
dda83cd7 | 8324 | if (!pdi->is_declaration) |
e8d05480 JB |
8325 | /* Ignore subprogram DIEs that do not have a name, they are |
8326 | illegal. Do not emit a complaint at this point, we will | |
8327 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8328 | if (pdi->name (cu)) |
e8d05480 | 8329 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8330 | } |
bc30ff58 | 8331 | } |
6e70227d | 8332 | |
bc30ff58 JB |
8333 | if (! pdi->has_children) |
8334 | return; | |
8335 | ||
0a4b0913 | 8336 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8337 | { |
8338 | pdi = pdi->die_child; | |
8339 | while (pdi != NULL) | |
8340 | { | |
52356b79 | 8341 | pdi->fixup (cu); |
bc30ff58 | 8342 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8343 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8344 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8345 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8346 | pdi = pdi->die_sibling; |
8347 | } | |
8348 | } | |
8349 | } | |
8350 | ||
91c24f0a DC |
8351 | /* Read a partial die corresponding to an enumeration type. */ |
8352 | ||
72bf9492 DJ |
8353 | static void |
8354 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8355 | struct dwarf2_cu *cu) | |
91c24f0a | 8356 | { |
72bf9492 | 8357 | struct partial_die_info *pdi; |
91c24f0a | 8358 | |
7d00ffec | 8359 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8360 | add_partial_symbol (enum_pdi, cu); |
8361 | ||
8362 | pdi = enum_pdi->die_child; | |
8363 | while (pdi) | |
91c24f0a | 8364 | { |
7d00ffec | 8365 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8366 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8367 | else |
72bf9492 DJ |
8368 | add_partial_symbol (pdi, cu); |
8369 | pdi = pdi->die_sibling; | |
91c24f0a | 8370 | } |
91c24f0a DC |
8371 | } |
8372 | ||
6caca83c CC |
8373 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8374 | ||
8375 | static unsigned int | |
d521ce57 | 8376 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8377 | { |
8378 | unsigned int bytes_read; | |
8379 | ||
8380 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8381 | } | |
8382 | ||
685af9cd TT |
8383 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8384 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8385 | ||
4bb7a0a7 DJ |
8386 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8387 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8388 | the initial number. */ | |
8389 | ||
7c32eebb | 8390 | static const struct abbrev_info * |
685af9cd TT |
8391 | peek_die_abbrev (const die_reader_specs &reader, |
8392 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8393 | { |
685af9cd | 8394 | dwarf2_cu *cu = reader.cu; |
0280fdcc | 8395 | bfd *abfd = reader.abfd; |
685af9cd TT |
8396 | unsigned int abbrev_number |
8397 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8398 | |
8399 | if (abbrev_number == 0) | |
8400 | return NULL; | |
8401 | ||
7c32eebb TT |
8402 | const abbrev_info *abbrev |
8403 | = reader.abbrev_table->lookup_abbrev (abbrev_number); | |
4bb7a0a7 DJ |
8404 | if (!abbrev) |
8405 | { | |
422b9917 | 8406 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8407 | " at offset %s [in module %s]"), |
422b9917 | 8408 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8409 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8410 | } |
8411 | ||
8412 | return abbrev; | |
8413 | } | |
8414 | ||
93311388 DE |
8415 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8416 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8417 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8418 | ||
d521ce57 TT |
8419 | static const gdb_byte * |
8420 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8421 | { |
4bb7a0a7 DJ |
8422 | while (1) |
8423 | { | |
685af9cd | 8424 | unsigned int bytes_read; |
7c32eebb TT |
8425 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
8426 | &bytes_read); | |
685af9cd | 8427 | |
4bb7a0a7 DJ |
8428 | if (abbrev == NULL) |
8429 | return info_ptr + bytes_read; | |
8430 | else | |
dee91e82 | 8431 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8432 | } |
8433 | } | |
8434 | ||
93311388 DE |
8435 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8436 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8437 | abbrev corresponding to that skipped uleb128 should be passed in |
8438 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8439 | children. */ | |
8440 | ||
d521ce57 TT |
8441 | static const gdb_byte * |
8442 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
7c32eebb | 8443 | const struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8444 | { |
8445 | unsigned int bytes_read; | |
8446 | struct attribute attr; | |
dee91e82 DE |
8447 | bfd *abfd = reader->abfd; |
8448 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8449 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8450 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8451 | unsigned int form, i; |
8452 | ||
8453 | for (i = 0; i < abbrev->num_attrs; i++) | |
8454 | { | |
8455 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8456 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8457 | { | |
7a5f294d | 8458 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8459 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8460 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8461 | else |
b9502d3f | 8462 | { |
0826b30a | 8463 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8464 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8465 | |
8466 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8467 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8468 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8469 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8470 | else |
8471 | return sibling_ptr; | |
8472 | } | |
4bb7a0a7 DJ |
8473 | } |
8474 | ||
8475 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8476 | form = abbrev->attrs[i].form; | |
8477 | skip_attribute: | |
8478 | switch (form) | |
8479 | { | |
4bb7a0a7 | 8480 | case DW_FORM_ref_addr: |
ae411497 TT |
8481 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8482 | and later it is offset sized. */ | |
8483 | if (cu->header.version == 2) | |
8484 | info_ptr += cu->header.addr_size; | |
8485 | else | |
8486 | info_ptr += cu->header.offset_size; | |
8487 | break; | |
36586728 TT |
8488 | case DW_FORM_GNU_ref_alt: |
8489 | info_ptr += cu->header.offset_size; | |
8490 | break; | |
ae411497 | 8491 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8492 | info_ptr += cu->header.addr_size; |
8493 | break; | |
8494 | case DW_FORM_data1: | |
8495 | case DW_FORM_ref1: | |
8496 | case DW_FORM_flag: | |
8fe0f950 | 8497 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8498 | info_ptr += 1; |
8499 | break; | |
2dc7f7b3 | 8500 | case DW_FORM_flag_present: |
43988095 | 8501 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8502 | break; |
4bb7a0a7 DJ |
8503 | case DW_FORM_data2: |
8504 | case DW_FORM_ref2: | |
8fe0f950 | 8505 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8506 | info_ptr += 2; |
8507 | break; | |
8fe0f950 AT |
8508 | case DW_FORM_strx3: |
8509 | info_ptr += 3; | |
8510 | break; | |
4bb7a0a7 DJ |
8511 | case DW_FORM_data4: |
8512 | case DW_FORM_ref4: | |
8fe0f950 | 8513 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8514 | info_ptr += 4; |
8515 | break; | |
8516 | case DW_FORM_data8: | |
8517 | case DW_FORM_ref8: | |
55f1336d | 8518 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8519 | info_ptr += 8; |
8520 | break; | |
0224619f JK |
8521 | case DW_FORM_data16: |
8522 | info_ptr += 16; | |
8523 | break; | |
4bb7a0a7 | 8524 | case DW_FORM_string: |
9b1c24c8 | 8525 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8526 | info_ptr += bytes_read; |
8527 | break; | |
2dc7f7b3 | 8528 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8529 | case DW_FORM_strp: |
36586728 | 8530 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8531 | info_ptr += cu->header.offset_size; |
8532 | break; | |
2dc7f7b3 | 8533 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8534 | case DW_FORM_block: |
8535 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8536 | info_ptr += bytes_read; | |
8537 | break; | |
8538 | case DW_FORM_block1: | |
8539 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8540 | break; | |
8541 | case DW_FORM_block2: | |
8542 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8543 | break; | |
8544 | case DW_FORM_block4: | |
8545 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8546 | break; | |
336d760d | 8547 | case DW_FORM_addrx: |
cf532bd1 | 8548 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8549 | case DW_FORM_sdata: |
8550 | case DW_FORM_udata: | |
8551 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8552 | case DW_FORM_GNU_addr_index: |
8553 | case DW_FORM_GNU_str_index: | |
18a8505e | 8554 | case DW_FORM_rnglistx: |
41144253 | 8555 | case DW_FORM_loclistx: |
d521ce57 | 8556 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8557 | break; |
8558 | case DW_FORM_indirect: | |
8559 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8560 | info_ptr += bytes_read; | |
8561 | /* We need to continue parsing from here, so just go back to | |
8562 | the top. */ | |
8563 | goto skip_attribute; | |
8564 | ||
8565 | default: | |
3e43a32a MS |
8566 | error (_("Dwarf Error: Cannot handle %s " |
8567 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8568 | dwarf_form_name (form), |
8569 | bfd_get_filename (abfd)); | |
8570 | } | |
8571 | } | |
8572 | ||
8573 | if (abbrev->has_children) | |
dee91e82 | 8574 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8575 | else |
8576 | return info_ptr; | |
8577 | } | |
8578 | ||
93311388 | 8579 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8580 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8581 | |
d521ce57 | 8582 | static const gdb_byte * |
dee91e82 DE |
8583 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8584 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8585 | const gdb_byte *info_ptr) |
91c24f0a DC |
8586 | { |
8587 | /* Do we know the sibling already? */ | |
72bf9492 | 8588 | |
91c24f0a DC |
8589 | if (orig_pdi->sibling) |
8590 | return orig_pdi->sibling; | |
8591 | ||
8592 | /* Are there any children to deal with? */ | |
8593 | ||
8594 | if (!orig_pdi->has_children) | |
8595 | return info_ptr; | |
8596 | ||
4bb7a0a7 | 8597 | /* Skip the children the long way. */ |
91c24f0a | 8598 | |
dee91e82 | 8599 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8600 | } |
8601 | ||
257e7a09 | 8602 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8603 | not NULL. */ |
c906108c | 8604 | |
891813be TT |
8605 | void |
8606 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8607 | { |
976ca316 | 8608 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 8609 | |
976ca316 | 8610 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 8611 | |
077cbab2 TT |
8612 | /* If this psymtab is constructed from a debug-only objfile, the |
8613 | has_section_at_zero flag will not necessarily be correct. We | |
8614 | can get the correct value for this flag by looking at the data | |
8615 | associated with the (presumably stripped) associated objfile. */ | |
8616 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8617 | { |
976ca316 | 8618 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 8619 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 8620 | |
976ca316 SM |
8621 | per_objfile->per_bfd->has_section_at_zero |
8622 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8623 | } |
98bfdba5 | 8624 | |
8566b89b | 8625 | expand_psymtab (objfile); |
95554aad | 8626 | |
976ca316 | 8627 | process_cu_includes (per_objfile); |
c906108c | 8628 | } |
9cdd5dbd DE |
8629 | \f |
8630 | /* Reading in full CUs. */ | |
c906108c | 8631 | |
10b3939b DJ |
8632 | /* Add PER_CU to the queue. */ |
8633 | ||
8634 | static void | |
120ce1b5 SM |
8635 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8636 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8637 | enum language pretend_language) |
10b3939b | 8638 | { |
10b3939b | 8639 | per_cu->queued = 1; |
08ac5771 SM |
8640 | |
8641 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
8642 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
8643 | } |
8644 | ||
616c069a SM |
8645 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
8646 | ||
89e63ee4 DE |
8647 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
8648 | dependency. | |
69d751e3 | 8649 | |
616c069a SM |
8650 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
8651 | DIEs, false otherwise. | |
8652 | ||
8653 | Explanation: there is an invariant that if a CU is queued for expansion | |
8654 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
8655 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
8656 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
8657 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
8658 | invariant is respected. | |
8659 | ||
8660 | The caller is therefore not required to load the CU's DIEs (we return false) | |
8661 | if: | |
8662 | ||
8663 | - the CU is already expanded, and therefore does not get enqueued | |
8664 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
8665 | ||
8666 | Note that the caller should not use this function's return value as an | |
8667 | indicator of whether the CU's DIEs are loaded right now, it should check | |
8668 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
8669 | |
8670 | static int | |
89e63ee4 | 8671 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8672 | dwarf2_per_cu_data *per_cu, |
8673 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8674 | enum language pretend_language) |
8675 | { | |
8676 | /* We may arrive here during partial symbol reading, if we need full | |
8677 | DIEs to process an unusual case (e.g. template arguments). Do | |
8678 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8679 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 8680 | { |
7188ed02 SM |
8681 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8682 | ||
8683 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
8684 | return 1; |
8685 | return 0; | |
8686 | } | |
8687 | ||
8688 | /* Mark the dependence relation so that we don't flush PER_CU | |
8689 | too early. */ | |
89e63ee4 DE |
8690 | if (dependent_cu != NULL) |
8691 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8692 | |
8693 | /* If it's already on the queue, we have nothing to do. */ | |
8694 | if (per_cu->queued) | |
de53369b SM |
8695 | { |
8696 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
8697 | loaded. */ | |
8698 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
8699 | |
8700 | /* If the CU is queued for expansion, it should not already be | |
8701 | expanded. */ | |
8702 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
8703 | ||
8704 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
8705 | return 0; |
8706 | } | |
0907af0c | 8707 | |
616c069a SM |
8708 | bool queued = false; |
8709 | if (!per_objfile->symtab_set_p (per_cu)) | |
8710 | { | |
8711 | /* Add it to the queue. */ | |
8712 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
8713 | queued = true; | |
8714 | } | |
8715 | ||
0907af0c DE |
8716 | /* If the compilation unit is already loaded, just mark it as |
8717 | used. */ | |
7188ed02 SM |
8718 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8719 | if (cu != nullptr) | |
616c069a | 8720 | cu->last_used = 0; |
0907af0c | 8721 | |
616c069a SM |
8722 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
8723 | and the DIEs are not already loaded. */ | |
8724 | return queued && cu == nullptr; | |
0907af0c DE |
8725 | } |
8726 | ||
10b3939b DJ |
8727 | /* Process the queue. */ |
8728 | ||
8729 | static void | |
976ca316 | 8730 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 8731 | { |
6f738b01 SM |
8732 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
8733 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 8734 | |
03dd20cc DJ |
8735 | /* The queue starts out with one item, but following a DIE reference |
8736 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 8737 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 8738 | { |
08ac5771 | 8739 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 8740 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 8741 | |
976ca316 | 8742 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 8743 | { |
976ca316 | 8744 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 8745 | |
7188ed02 SM |
8746 | /* Skip dummy CUs. */ |
8747 | if (cu != nullptr) | |
73be47f5 | 8748 | { |
7188ed02 SM |
8749 | unsigned int debug_print_threshold; |
8750 | char buf[100]; | |
8751 | ||
8752 | if (per_cu->is_debug_types) | |
8753 | { | |
8754 | struct signatured_type *sig_type = | |
8755 | (struct signatured_type *) per_cu; | |
8756 | ||
8757 | sprintf (buf, "TU %s at offset %s", | |
8758 | hex_string (sig_type->signature), | |
8759 | sect_offset_str (per_cu->sect_off)); | |
8760 | /* There can be 100s of TUs. | |
8761 | Only print them in verbose mode. */ | |
8762 | debug_print_threshold = 2; | |
8763 | } | |
8764 | else | |
8765 | { | |
8766 | sprintf (buf, "CU at offset %s", | |
8767 | sect_offset_str (per_cu->sect_off)); | |
8768 | debug_print_threshold = 1; | |
8769 | } | |
247f5c4f | 8770 | |
7188ed02 | 8771 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8772 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 8773 | |
7188ed02 SM |
8774 | if (per_cu->is_debug_types) |
8775 | process_full_type_unit (cu, item.pretend_language); | |
8776 | else | |
8777 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 8778 | |
7188ed02 | 8779 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8780 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 8781 | } |
f4dc4d17 | 8782 | } |
10b3939b | 8783 | |
7188ed02 | 8784 | per_cu->queued = 0; |
08ac5771 | 8785 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
8786 | } |
8787 | ||
6f738b01 SM |
8788 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
8789 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
8790 | } |
8791 | ||
10b3939b DJ |
8792 | /* Read in full symbols for PST, and anything it depends on. */ |
8793 | ||
8566b89b TT |
8794 | void |
8795 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8796 | { |
af758d11 | 8797 | gdb_assert (!readin_p (objfile)); |
95554aad | 8798 | |
17ee85fc TT |
8799 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
8800 | free_cached_comp_units freer (per_objfile); | |
48993951 | 8801 | expand_dependencies (objfile); |
aaa75496 | 8802 | |
97a1449a | 8803 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 8804 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
8805 | } |
8806 | ||
af758d11 SM |
8807 | /* See psympriv.h. */ |
8808 | ||
8809 | bool | |
8810 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
8811 | { | |
8812 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8813 | return per_objfile->symtab_set_p (per_cu_data); | |
8814 | } | |
8815 | ||
8816 | /* See psympriv.h. */ | |
8817 | ||
8818 | compunit_symtab * | |
8819 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
8820 | { | |
8821 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8822 | return per_objfile->get_symtab (per_cu_data); | |
8823 | } | |
8824 | ||
dee91e82 DE |
8825 | /* Trivial hash function for die_info: the hash value of a DIE |
8826 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8827 | |
dee91e82 DE |
8828 | static hashval_t |
8829 | die_hash (const void *item) | |
10b3939b | 8830 | { |
9a3c8263 | 8831 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8832 | |
9c541725 | 8833 | return to_underlying (die->sect_off); |
dee91e82 | 8834 | } |
63d06c5c | 8835 | |
dee91e82 DE |
8836 | /* Trivial comparison function for die_info structures: two DIEs |
8837 | are equal if they have the same offset. */ | |
98bfdba5 | 8838 | |
dee91e82 DE |
8839 | static int |
8840 | die_eq (const void *item_lhs, const void *item_rhs) | |
8841 | { | |
9a3c8263 SM |
8842 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8843 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8844 | |
9c541725 | 8845 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8846 | } |
c906108c | 8847 | |
4a636814 SM |
8848 | /* Load the DIEs associated with PER_CU into memory. |
8849 | ||
8850 | In some cases, the caller, while reading partial symbols, will need to load | |
8851 | the full symbols for the CU for some reason. It will already have a | |
8852 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
8853 | rather than creating a new one. */ | |
c906108c | 8854 | |
dee91e82 | 8855 | static void |
ab432490 SM |
8856 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
8857 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 8858 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
8859 | bool skip_partial, |
8860 | enum language pretend_language) | |
dee91e82 | 8861 | { |
c0ab21c2 TT |
8862 | gdb_assert (! this_cu->is_debug_types); |
8863 | ||
7188ed02 | 8864 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
8865 | if (reader.dummy_p) |
8866 | return; | |
8867 | ||
8868 | struct dwarf2_cu *cu = reader.cu; | |
8869 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8870 | |
dee91e82 DE |
8871 | gdb_assert (cu->die_hash == NULL); |
8872 | cu->die_hash = | |
8873 | htab_create_alloc_ex (cu->header.length / 12, | |
8874 | die_hash, | |
8875 | die_eq, | |
8876 | NULL, | |
8877 | &cu->comp_unit_obstack, | |
8878 | hashtab_obstack_allocate, | |
8879 | dummy_obstack_deallocate); | |
e142c38c | 8880 | |
3e225074 | 8881 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8882 | reader.comp_unit_die->child |
8883 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8884 | &info_ptr, reader.comp_unit_die); | |
8885 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8886 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8887 | |
8888 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8889 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8890 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8891 | or we won't be able to build types correctly. |
8892 | Similarly, if we do not read the producer, we can not apply | |
8893 | producer-specific interpretation. */ | |
c0ab21c2 | 8894 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8895 | |
8896 | reader.keep (); | |
10b3939b DJ |
8897 | } |
8898 | ||
3da10d80 KS |
8899 | /* Add a DIE to the delayed physname list. */ |
8900 | ||
8901 | static void | |
8902 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8903 | const char *name, struct die_info *die, | |
8904 | struct dwarf2_cu *cu) | |
8905 | { | |
8906 | struct delayed_method_info mi; | |
8907 | mi.type = type; | |
8908 | mi.fnfield_index = fnfield_index; | |
8909 | mi.index = index; | |
8910 | mi.name = name; | |
8911 | mi.die = die; | |
c89b44cd | 8912 | cu->method_list.push_back (mi); |
3da10d80 KS |
8913 | } |
8914 | ||
3693fdb3 PA |
8915 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8916 | "const" / "volatile". If so, decrements LEN by the length of the | |
8917 | modifier and return true. Otherwise return false. */ | |
8918 | ||
8919 | template<size_t N> | |
8920 | static bool | |
8921 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8922 | { | |
8923 | size_t mod_len = sizeof (mod) - 1; | |
8924 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8925 | { | |
8926 | len -= mod_len; | |
8927 | return true; | |
8928 | } | |
8929 | return false; | |
8930 | } | |
8931 | ||
3da10d80 KS |
8932 | /* Compute the physnames of any methods on the CU's method list. |
8933 | ||
8934 | The computation of method physnames is delayed in order to avoid the | |
8935 | (bad) condition that one of the method's formal parameters is of an as yet | |
8936 | incomplete type. */ | |
8937 | ||
8938 | static void | |
8939 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8940 | { | |
3693fdb3 | 8941 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8942 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8943 | return; |
8944 | gdb_assert (cu->language == language_cplus); | |
8945 | ||
52941706 | 8946 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8947 | { |
1d06ead6 | 8948 | const char *physname; |
3da10d80 | 8949 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8950 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8951 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8952 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8953 | = physname ? physname : ""; |
3693fdb3 PA |
8954 | |
8955 | /* Since there's no tag to indicate whether a method is a | |
8956 | const/volatile overload, extract that information out of the | |
8957 | demangled name. */ | |
8958 | if (physname != NULL) | |
8959 | { | |
8960 | size_t len = strlen (physname); | |
8961 | ||
8962 | while (1) | |
8963 | { | |
8964 | if (physname[len] == ')') /* shortcut */ | |
8965 | break; | |
8966 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8967 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8968 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8969 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8970 | else |
8971 | break; | |
8972 | } | |
8973 | } | |
3da10d80 | 8974 | } |
c89b44cd TT |
8975 | |
8976 | /* The list is no longer needed. */ | |
8977 | cu->method_list.clear (); | |
3da10d80 KS |
8978 | } |
8979 | ||
a766d390 DE |
8980 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8981 | and it's not clear if/how imported objects will appear. | |
8982 | To keep Go support simple until that's worked out, | |
8983 | go back through what we've read and create something usable. | |
8984 | We could do this while processing each DIE, and feels kinda cleaner, | |
8985 | but that way is more invasive. | |
8986 | This is to, for example, allow the user to type "p var" or "b main" | |
8987 | without having to specify the package name, and allow lookups | |
8988 | of module.object to work in contexts that use the expression | |
8989 | parser. */ | |
8990 | ||
8991 | static void | |
8992 | fixup_go_packaging (struct dwarf2_cu *cu) | |
8993 | { | |
421d1616 | 8994 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
8995 | struct pending *list; |
8996 | int i; | |
8997 | ||
c24bdb02 | 8998 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
8999 | list != NULL; |
9000 | list = list->next) | |
a766d390 DE |
9001 | { |
9002 | for (i = 0; i < list->nsyms; ++i) | |
9003 | { | |
9004 | struct symbol *sym = list->symbol[i]; | |
9005 | ||
c1b5c1eb | 9006 | if (sym->language () == language_go |
a766d390 DE |
9007 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9008 | { | |
421d1616 TT |
9009 | gdb::unique_xmalloc_ptr<char> this_package_name |
9010 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9011 | |
9012 | if (this_package_name == NULL) | |
9013 | continue; | |
9014 | if (package_name == NULL) | |
421d1616 | 9015 | package_name = std::move (this_package_name); |
a766d390 DE |
9016 | else |
9017 | { | |
5e22e966 | 9018 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9019 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9020 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9021 | (symbol_symtab (sym) != NULL |
9022 | ? symtab_to_filename_for_display | |
9023 | (symbol_symtab (sym)) | |
e3b94546 | 9024 | : objfile_name (objfile)), |
421d1616 | 9025 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9026 | } |
9027 | } | |
9028 | } | |
9029 | } | |
9030 | ||
9031 | if (package_name != NULL) | |
9032 | { | |
5e22e966 | 9033 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9034 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9035 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9036 | saved_package_name); | |
a766d390 DE |
9037 | struct symbol *sym; |
9038 | ||
8c14c3a3 | 9039 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9040 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9041 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9042 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9043 | e.g., "main" finds the "main" module and not C's main(). */ | |
9044 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9045 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9046 | SYMBOL_TYPE (sym) = type; |
9047 | ||
c24bdb02 | 9048 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9049 | } |
9050 | } | |
9051 | ||
c9317f21 TT |
9052 | /* Allocate a fully-qualified name consisting of the two parts on the |
9053 | obstack. */ | |
9054 | ||
9055 | static const char * | |
9056 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9057 | { | |
9058 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9059 | } | |
9060 | ||
9c6a1327 TT |
9061 | /* A helper that allocates a variant part to attach to a Rust enum |
9062 | type. OBSTACK is where the results should be allocated. TYPE is | |
9063 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9064 | discriminant. It must be the index of one of the fields of TYPE, |
9065 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9066 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9067 | no default. RANGES is indexed by "effective" field number (the | |
9068 | field index, but omitting the discriminant and default fields) and | |
9069 | must hold the discriminant values used by the variants. Note that | |
9070 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9071 | already allocated on it, or static. */ | |
c9317f21 | 9072 | |
9c6a1327 TT |
9073 | static void |
9074 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9075 | int discriminant_index, int default_index, | |
9076 | gdb::array_view<discriminant_range> ranges) | |
9077 | { | |
57d02173 TT |
9078 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9079 | gdb_assert (discriminant_index == -1 | |
9080 | || (discriminant_index >= 0 | |
9081 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9082 | gdb_assert (default_index == -1 |
1f704f76 | 9083 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9084 | |
9c6a1327 | 9085 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9086 | int n_variants = type->num_fields (); |
9087 | if (discriminant_index != -1) | |
9088 | --n_variants; | |
c9317f21 | 9089 | |
9c6a1327 TT |
9090 | variant *variants = new (obstack) variant[n_variants]; |
9091 | int var_idx = 0; | |
9092 | int range_idx = 0; | |
1f704f76 | 9093 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9094 | { |
9095 | if (i == discriminant_index) | |
9096 | continue; | |
c9317f21 | 9097 | |
9c6a1327 TT |
9098 | variants[var_idx].first_field = i; |
9099 | variants[var_idx].last_field = i + 1; | |
9100 | ||
9101 | /* The default field does not need a range, but other fields do. | |
9102 | We skipped the discriminant above. */ | |
9103 | if (i != default_index) | |
9104 | { | |
9105 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9106 | ++range_idx; | |
9107 | } | |
c9317f21 | 9108 | |
9c6a1327 TT |
9109 | ++var_idx; |
9110 | } | |
9111 | ||
9112 | gdb_assert (range_idx == ranges.size ()); | |
9113 | gdb_assert (var_idx == n_variants); | |
9114 | ||
9115 | variant_part *part = new (obstack) variant_part; | |
9116 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9117 | /* If there is no discriminant, then whether it is signed is of no |
9118 | consequence. */ | |
9119 | part->is_unsigned | |
9120 | = (discriminant_index == -1 | |
9121 | ? false | |
c6d940a9 | 9122 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9123 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9124 | ||
9125 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9126 | gdb::array_view<variant_part> *prop_value | |
9127 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9128 | |
9c6a1327 | 9129 | struct dynamic_prop prop; |
8c2e4e06 | 9130 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9131 | |
5c54719c | 9132 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9133 | } |
9134 | ||
9135 | /* Some versions of rustc emitted enums in an unusual way. | |
9136 | ||
9137 | Ordinary enums were emitted as unions. The first element of each | |
9138 | structure in the union was named "RUST$ENUM$DISR". This element | |
9139 | held the discriminant. | |
9140 | ||
9141 | These versions of Rust also implemented the "non-zero" | |
9142 | optimization. When the enum had two values, and one is empty and | |
9143 | the other holds a pointer that cannot be zero, the pointer is used | |
9144 | as the discriminant, with a zero value meaning the empty variant. | |
9145 | Here, the union's first member is of the form | |
9146 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9147 | where the fieldnos are the indices of the fields that should be | |
9148 | traversed in order to find the field (which may be several fields deep) | |
9149 | and the variantname is the name of the variant of the case when the | |
9150 | field is zero. | |
9151 | ||
9152 | This function recognizes whether TYPE is of one of these forms, | |
9153 | and, if so, smashes it to be a variant type. */ | |
9154 | ||
9155 | static void | |
9156 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9157 | { | |
78134374 | 9158 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9159 | |
9160 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9161 | if (type->num_fields () == 0) |
c9317f21 TT |
9162 | return; |
9163 | ||
9164 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9165 | if (type->num_fields () == 1 |
c9317f21 TT |
9166 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9167 | { | |
9168 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9169 | ||
9170 | /* Decode the field name to find the offset of the | |
9171 | discriminant. */ | |
9172 | ULONGEST bit_offset = 0; | |
940da03e | 9173 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9174 | while (name[0] >= '0' && name[0] <= '9') |
9175 | { | |
9176 | char *tail; | |
9177 | unsigned long index = strtoul (name, &tail, 10); | |
9178 | name = tail; | |
9179 | if (*name != '$' | |
1f704f76 | 9180 | || index >= field_type->num_fields () |
c9317f21 TT |
9181 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9182 | != FIELD_LOC_KIND_BITPOS)) | |
9183 | { | |
b98664d3 | 9184 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9185 | "[in module %s]"), |
9186 | TYPE_FIELD_NAME (type, 0), | |
9187 | objfile_name (objfile)); | |
9188 | return; | |
9189 | } | |
9190 | ++name; | |
9191 | ||
9192 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9193 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9194 | } |
9195 | ||
9c6a1327 TT |
9196 | /* Smash this type to be a structure type. We have to do this |
9197 | because the type has already been recorded. */ | |
67607e24 | 9198 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9199 | type->set_num_fields (3); |
9c6a1327 | 9200 | /* Save the field we care about. */ |
ceacbf6e | 9201 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9202 | type->set_fields |
9203 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9204 | |
9c6a1327 | 9205 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9206 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9207 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9208 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9209 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9210 | |
9211 | /* The order of fields doesn't really matter, so put the real | |
9212 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9213 | type->field (1) = saved_field; |
9c6a1327 | 9214 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9215 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9216 | type->field (1).type ()->set_name | |
7d93a1e0 | 9217 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9218 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9219 | |
9220 | const char *dataless_name | |
7d93a1e0 | 9221 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9222 | name); |
9223 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9224 | dataless_name); | |
5d14b6e5 | 9225 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9226 | /* NAME points into the original discriminant name, which |
9227 | already has the correct lifetime. */ | |
9c6a1327 | 9228 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9229 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9230 | |
9c6a1327 TT |
9231 | /* Indicate that this is a variant type. */ |
9232 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9233 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9234 | } |
77c2dba3 TT |
9235 | /* A union with a single anonymous field is probably an old-style |
9236 | univariant enum. */ | |
1f704f76 | 9237 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9238 | { |
c9317f21 TT |
9239 | /* Smash this type to be a structure type. We have to do this |
9240 | because the type has already been recorded. */ | |
67607e24 | 9241 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9242 | |
940da03e | 9243 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9244 | const char *variant_name |
7d93a1e0 | 9245 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9246 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9247 | field_type->set_name |
9248 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9249 | type->name (), variant_name)); |
57d02173 TT |
9250 | |
9251 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9252 | } |
9253 | else | |
9254 | { | |
9255 | struct type *disr_type = nullptr; | |
1f704f76 | 9256 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9257 | { |
940da03e | 9258 | disr_type = type->field (i).type (); |
c9317f21 | 9259 | |
78134374 | 9260 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9261 | { |
9262 | /* All fields of a true enum will be structs. */ | |
9263 | return; | |
9264 | } | |
1f704f76 | 9265 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9266 | { |
9267 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9268 | disr_type = nullptr; |
c9317f21 TT |
9269 | } |
9270 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9271 | "RUST$ENUM$DISR") != 0) | |
9272 | { | |
9273 | /* Not a Rust enum. */ | |
9274 | return; | |
9275 | } | |
9276 | else | |
9277 | { | |
9278 | /* Found one. */ | |
9279 | break; | |
9280 | } | |
9281 | } | |
9282 | ||
9283 | /* If we got here without a discriminant, then it's probably | |
9284 | just a union. */ | |
9285 | if (disr_type == nullptr) | |
9286 | return; | |
9287 | ||
9288 | /* Smash this type to be a structure type. We have to do this | |
9289 | because the type has already been recorded. */ | |
67607e24 | 9290 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9291 | |
9c6a1327 | 9292 | /* Make space for the discriminant field. */ |
ceacbf6e | 9293 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9294 | field *new_fields |
1f704f76 | 9295 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9296 | * sizeof (struct field))); |
80fc5e77 | 9297 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9298 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9299 | type->set_fields (new_fields); |
1f704f76 | 9300 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9301 | |
9302 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9303 | type->field (0) = *disr_field; |
9c6a1327 TT |
9304 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9305 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9306 | |
9307 | /* We need a way to find the correct discriminant given a | |
9308 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9309 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9310 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9311 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9312 | { |
9313 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9314 | { | |
9315 | const char *name | |
9316 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9317 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9318 | } | |
9319 | } | |
9320 | ||
1f704f76 | 9321 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9322 | /* We don't need a range entry for the discriminant, but we do |
9323 | need one for every other field, as there is no default | |
9324 | variant. */ | |
9325 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9326 | discriminant_range, | |
9327 | n_fields - 1); | |
c9317f21 TT |
9328 | /* Skip the discriminant here. */ |
9329 | for (int i = 1; i < n_fields; ++i) | |
9330 | { | |
9331 | /* Find the final word in the name of this variant's type. | |
9332 | That name can be used to look up the correct | |
9333 | discriminant. */ | |
9334 | const char *variant_name | |
940da03e | 9335 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9336 | |
9337 | auto iter = discriminant_map.find (variant_name); | |
9338 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9339 | { |
57d02173 TT |
9340 | ranges[i - 1].low = iter->second; |
9341 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9342 | } |
c9317f21 | 9343 | |
57d02173 TT |
9344 | /* In Rust, each element should have the size of the |
9345 | enclosing enum. */ | |
9346 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9347 | ||
bedda9ac | 9348 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9349 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9350 | if (sub_type->num_fields () > 0) |
bedda9ac | 9351 | { |
5e33d5f4 | 9352 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9353 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9354 | } |
9c6a1327 | 9355 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9356 | sub_type->set_name |
9357 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9358 | type->name (), variant_name)); |
c9317f21 | 9359 | } |
9c6a1327 TT |
9360 | |
9361 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9362 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9363 | gdb::array_view<discriminant_range> (ranges, |
9364 | n_fields - 1)); | |
c9317f21 TT |
9365 | } |
9366 | } | |
9367 | ||
9368 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9369 | ||
9370 | static void | |
9371 | rust_union_quirks (struct dwarf2_cu *cu) | |
9372 | { | |
9373 | gdb_assert (cu->language == language_rust); | |
52941706 | 9374 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9375 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9376 | /* We don't need this any more. */ |
9377 | cu->rust_unions.clear (); | |
c9317f21 TT |
9378 | } |
9379 | ||
8adb8487 TT |
9380 | /* See read.h. */ |
9381 | ||
9382 | type_unit_group_unshareable * | |
9383 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9384 | { | |
9385 | auto iter = this->m_type_units.find (tu_group); | |
9386 | if (iter != this->m_type_units.end ()) | |
9387 | return iter->second.get (); | |
9388 | ||
9389 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9390 | type_unit_group_unshareable *result = uniq.get (); | |
9391 | this->m_type_units[tu_group] = std::move (uniq); | |
9392 | return result; | |
9393 | } | |
9394 | ||
e286671b TT |
9395 | struct type * |
9396 | dwarf2_per_objfile::get_type_for_signatured_type | |
9397 | (signatured_type *sig_type) const | |
9398 | { | |
9399 | auto iter = this->m_type_map.find (sig_type); | |
9400 | if (iter == this->m_type_map.end ()) | |
9401 | return nullptr; | |
9402 | ||
9403 | return iter->second; | |
9404 | } | |
9405 | ||
9406 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9407 | (signatured_type *sig_type, struct type *type) | |
9408 | { | |
9409 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9410 | ||
9411 | this->m_type_map[sig_type] = type; | |
9412 | } | |
9413 | ||
95554aad TT |
9414 | /* A helper function for computing the list of all symbol tables |
9415 | included by PER_CU. */ | |
9416 | ||
9417 | static void | |
4c39bc03 | 9418 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9419 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9420 | dwarf2_per_cu_data *per_cu, |
9421 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9422 | struct compunit_symtab *immediate_parent) |
95554aad | 9423 | { |
af758d11 | 9424 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9425 | if (*slot != NULL) |
9426 | { | |
9427 | /* This inclusion and its children have been processed. */ | |
9428 | return; | |
9429 | } | |
9430 | ||
9431 | *slot = per_cu; | |
af758d11 | 9432 | |
95554aad | 9433 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9434 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9435 | if (cust != NULL) |
ec94af83 DE |
9436 | { |
9437 | /* If this is a type unit only add its symbol table if we haven't | |
9438 | seen it yet (type unit per_cu's can share symtabs). */ | |
9439 | if (per_cu->is_debug_types) | |
9440 | { | |
43f3e411 | 9441 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9442 | if (*slot == NULL) |
9443 | { | |
43f3e411 | 9444 | *slot = cust; |
4c39bc03 | 9445 | result->push_back (cust); |
43f3e411 DE |
9446 | if (cust->user == NULL) |
9447 | cust->user = immediate_parent; | |
ec94af83 DE |
9448 | } |
9449 | } | |
9450 | else | |
f9125b6c | 9451 | { |
4c39bc03 | 9452 | result->push_back (cust); |
43f3e411 DE |
9453 | if (cust->user == NULL) |
9454 | cust->user = immediate_parent; | |
f9125b6c | 9455 | } |
ec94af83 | 9456 | } |
95554aad | 9457 | |
ae640021 AB |
9458 | if (!per_cu->imported_symtabs_empty ()) |
9459 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9460 | { | |
9461 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9462 | all_type_symtabs, ptr, per_objfile, |
9463 | cust); | |
ae640021 | 9464 | } |
95554aad TT |
9465 | } |
9466 | ||
43f3e411 | 9467 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9468 | PER_CU. */ |
9469 | ||
9470 | static void | |
43182c09 SM |
9471 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9472 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9473 | { |
f4dc4d17 DE |
9474 | gdb_assert (! per_cu->is_debug_types); |
9475 | ||
ae640021 | 9476 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9477 | { |
ae640021 | 9478 | int len; |
4c39bc03 | 9479 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9480 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9481 | |
9482 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9483 | if (cust == NULL) |
95554aad TT |
9484 | return; |
9485 | ||
280a9412 TT |
9486 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9487 | htab_eq_pointer, | |
9488 | NULL, xcalloc, xfree)); | |
9489 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9490 | htab_eq_pointer, | |
9491 | NULL, xcalloc, xfree)); | |
95554aad | 9492 | |
ae640021 | 9493 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9494 | { |
280a9412 TT |
9495 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9496 | all_type_symtabs.get (), ptr, | |
9497 | per_objfile, cust); | |
ec94af83 | 9498 | } |
95554aad | 9499 | |
ec94af83 | 9500 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9501 | len = result_symtabs.size (); |
43f3e411 | 9502 | cust->includes |
f6e649dd | 9503 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9504 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9505 | memcpy (cust->includes, result_symtabs.data (), |
9506 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9507 | cust->includes[len] = NULL; |
95554aad TT |
9508 | } |
9509 | } | |
9510 | ||
9511 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9512 | read. */ | |
9513 | ||
9514 | static void | |
976ca316 | 9515 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9516 | { |
976ca316 | 9517 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9518 | { |
9519 | if (! iter->is_debug_types) | |
976ca316 | 9520 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9521 | } |
95554aad | 9522 | |
976ca316 | 9523 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9524 | } |
9525 | ||
8fc0b21d | 9526 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9527 | already been loaded into memory. */ |
9528 | ||
9529 | static void | |
8fc0b21d | 9530 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9531 | { |
976ca316 SM |
9532 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9533 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9534 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9535 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9536 | struct compunit_symtab *cust; |
10b3939b | 9537 | CORE_ADDR baseaddr; |
4359dff1 | 9538 | struct block *static_block; |
3e29f34a | 9539 | CORE_ADDR addr; |
10b3939b | 9540 | |
b3b3bada | 9541 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9542 | |
c89b44cd TT |
9543 | /* Clear the list here in case something was left over. */ |
9544 | cu->method_list.clear (); | |
10b3939b | 9545 | |
95554aad TT |
9546 | cu->language = pretend_language; |
9547 | cu->language_defn = language_def (cu->language); | |
9548 | ||
1c47ec3e TV |
9549 | dwarf2_find_base_address (cu->dies, cu); |
9550 | ||
702cf3f5 AB |
9551 | /* Before we start reading the top-level DIE, ensure it has a valid tag |
9552 | type. */ | |
9553 | switch (cu->dies->tag) | |
9554 | { | |
9555 | case DW_TAG_compile_unit: | |
9556 | case DW_TAG_partial_unit: | |
9557 | case DW_TAG_type_unit: | |
9558 | break; | |
9559 | default: | |
9560 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), | |
9561 | dwarf_tag_name (cu->dies->tag), | |
9562 | sect_offset_str (cu->per_cu->sect_off), | |
9563 | objfile_name (per_objfile->objfile)); | |
9564 | } | |
9565 | ||
c906108c | 9566 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9567 | process_die (cu->dies, cu); |
c906108c | 9568 | |
a766d390 DE |
9569 | /* For now fudge the Go package. */ |
9570 | if (cu->language == language_go) | |
9571 | fixup_go_packaging (cu); | |
9572 | ||
5f48f8f3 | 9573 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9574 | should be complete, and it should now be safe to compute all of the |
9575 | physnames. */ | |
9576 | compute_delayed_physnames (cu); | |
3da10d80 | 9577 | |
c9317f21 TT |
9578 | if (cu->language == language_rust) |
9579 | rust_union_quirks (cu); | |
9580 | ||
fae299cd DC |
9581 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9582 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9583 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9584 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9585 | |
3e29f34a | 9586 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9587 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9588 | |
9589 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9590 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9591 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9592 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9593 | this comp unit. */ | |
9594 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9595 | ||
c24bdb02 | 9596 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9597 | SECT_OFF_TEXT (objfile), |
9598 | 0); | |
c906108c | 9599 | |
43f3e411 | 9600 | if (cust != NULL) |
c906108c | 9601 | { |
df15bd07 | 9602 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9603 | |
8be455d7 JK |
9604 | /* Set symtab language to language from DW_AT_language. If the |
9605 | compilation is from a C file generated by language preprocessors, do | |
9606 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9607 | if (!(cu->language == language_c |
40e3ad0e | 9608 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9609 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9610 | |
9611 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9612 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9613 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9614 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9615 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9616 | |
9617 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9618 | needed, it would be wrong due to missing DW_AT_producer there. | |
9619 | ||
9620 | Still one can confuse GDB by using non-standard GCC compilation | |
9621 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9622 | */ |
ab260dad | 9623 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9624 | cust->locations_valid = 1; |
e0d00bc7 JK |
9625 | |
9626 | if (gcc_4_minor >= 5) | |
43f3e411 | 9627 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9628 | |
43f3e411 | 9629 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9630 | } |
9291a0cd | 9631 | |
976ca316 | 9632 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9633 | |
95554aad | 9634 | /* Push it for inclusion processing later. */ |
976ca316 | 9635 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9636 | |
9637 | /* Not needed any more. */ | |
c24bdb02 | 9638 | cu->reset_builder (); |
f4dc4d17 | 9639 | } |
45cfd468 | 9640 | |
8fc0b21d | 9641 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9642 | already been loaded into memory. */ |
9643 | ||
9644 | static void | |
8fc0b21d | 9645 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9646 | enum language pretend_language) |
9647 | { | |
976ca316 SM |
9648 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9649 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 9650 | struct compunit_symtab *cust; |
0186c6a7 DE |
9651 | struct signatured_type *sig_type; |
9652 | ||
8fc0b21d SM |
9653 | gdb_assert (cu->per_cu->is_debug_types); |
9654 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9655 | |
c89b44cd TT |
9656 | /* Clear the list here in case something was left over. */ |
9657 | cu->method_list.clear (); | |
f4dc4d17 | 9658 | |
f4dc4d17 DE |
9659 | cu->language = pretend_language; |
9660 | cu->language_defn = language_def (cu->language); | |
9661 | ||
9662 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9663 | process_die (cu->dies, cu); | |
9664 | ||
9665 | /* For now fudge the Go package. */ | |
9666 | if (cu->language == language_go) | |
9667 | fixup_go_packaging (cu); | |
9668 | ||
5f48f8f3 | 9669 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9670 | should be complete, and it should now be safe to compute all of the |
9671 | physnames. */ | |
9672 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9673 | |
c9317f21 TT |
9674 | if (cu->language == language_rust) |
9675 | rust_union_quirks (cu); | |
9676 | ||
f4dc4d17 DE |
9677 | /* TUs share symbol tables. |
9678 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9679 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9680 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 9681 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 9682 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 9683 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 9684 | { |
c24bdb02 KS |
9685 | buildsym_compunit *builder = cu->get_builder (); |
9686 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9687 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9688 | |
43f3e411 | 9689 | if (cust != NULL) |
f4dc4d17 DE |
9690 | { |
9691 | /* Set symtab language to language from DW_AT_language. If the | |
9692 | compilation is from a C file generated by language preprocessors, | |
9693 | do not set the language if it was already deduced by | |
9694 | start_subfile. */ | |
43f3e411 DE |
9695 | if (!(cu->language == language_c |
9696 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9697 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9698 | } |
9699 | } | |
9700 | else | |
9701 | { | |
c24bdb02 | 9702 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9703 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9704 | } |
9705 | ||
976ca316 | 9706 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
9707 | |
9708 | /* Not needed any more. */ | |
c24bdb02 | 9709 | cu->reset_builder (); |
c906108c SS |
9710 | } |
9711 | ||
95554aad TT |
9712 | /* Process an imported unit DIE. */ |
9713 | ||
9714 | static void | |
9715 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9716 | { | |
9717 | struct attribute *attr; | |
9718 | ||
f4dc4d17 DE |
9719 | /* For now we don't handle imported units in type units. */ |
9720 | if (cu->per_cu->is_debug_types) | |
9721 | { | |
9722 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9723 | " supported in type units [in module %s]"), | |
5e22e966 | 9724 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9725 | } |
9726 | ||
95554aad TT |
9727 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9728 | if (attr != NULL) | |
9729 | { | |
0826b30a | 9730 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 9731 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 9732 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 9733 | dwarf2_per_cu_data *per_cu |
ab432490 | 9734 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 9735 | |
58990295 TV |
9736 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9737 | into another compilation unit, at root level. Regard this as a hint, | |
9738 | and ignore it. */ | |
9739 | if (die->parent && die->parent->parent == NULL | |
9740 | && per_cu->unit_type == DW_UT_compile | |
9741 | && per_cu->lang == language_cplus) | |
9742 | return; | |
9743 | ||
69d751e3 | 9744 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 9745 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
9746 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
9747 | false, cu->language); | |
95554aad | 9748 | |
ae640021 | 9749 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9750 | } |
9751 | } | |
9752 | ||
4c8aa72d PA |
9753 | /* RAII object that represents a process_die scope: i.e., |
9754 | starts/finishes processing a DIE. */ | |
9755 | class process_die_scope | |
adde2bff | 9756 | { |
4c8aa72d PA |
9757 | public: |
9758 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9759 | : m_die (die), m_cu (cu) | |
9760 | { | |
9761 | /* We should only be processing DIEs not already in process. */ | |
9762 | gdb_assert (!m_die->in_process); | |
9763 | m_die->in_process = true; | |
9764 | } | |
8c3cb9fa | 9765 | |
4c8aa72d PA |
9766 | ~process_die_scope () |
9767 | { | |
9768 | m_die->in_process = false; | |
9769 | ||
9770 | /* If we're done processing the DIE for the CU that owns the line | |
9771 | header, we don't need the line header anymore. */ | |
9772 | if (m_cu->line_header_die_owner == m_die) | |
9773 | { | |
9774 | delete m_cu->line_header; | |
9775 | m_cu->line_header = NULL; | |
9776 | m_cu->line_header_die_owner = NULL; | |
9777 | } | |
9778 | } | |
9779 | ||
9780 | private: | |
9781 | die_info *m_die; | |
9782 | dwarf2_cu *m_cu; | |
9783 | }; | |
adde2bff | 9784 | |
c906108c SS |
9785 | /* Process a die and its children. */ |
9786 | ||
9787 | static void | |
e7c27a73 | 9788 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9789 | { |
4c8aa72d | 9790 | process_die_scope scope (die, cu); |
adde2bff | 9791 | |
c906108c SS |
9792 | switch (die->tag) |
9793 | { | |
9794 | case DW_TAG_padding: | |
9795 | break; | |
9796 | case DW_TAG_compile_unit: | |
95554aad | 9797 | case DW_TAG_partial_unit: |
e7c27a73 | 9798 | read_file_scope (die, cu); |
c906108c | 9799 | break; |
348e048f DE |
9800 | case DW_TAG_type_unit: |
9801 | read_type_unit_scope (die, cu); | |
9802 | break; | |
c906108c | 9803 | case DW_TAG_subprogram: |
0a4b0913 AB |
9804 | /* Nested subprograms in Fortran get a prefix. */ |
9805 | if (cu->language == language_fortran | |
9806 | && die->parent != NULL | |
9807 | && die->parent->tag == DW_TAG_subprogram) | |
9808 | cu->processing_has_namespace_info = true; | |
9809 | /* Fall through. */ | |
c906108c | 9810 | case DW_TAG_inlined_subroutine: |
edb3359d | 9811 | read_func_scope (die, cu); |
c906108c SS |
9812 | break; |
9813 | case DW_TAG_lexical_block: | |
14898363 L |
9814 | case DW_TAG_try_block: |
9815 | case DW_TAG_catch_block: | |
e7c27a73 | 9816 | read_lexical_block_scope (die, cu); |
c906108c | 9817 | break; |
216f72a1 | 9818 | case DW_TAG_call_site: |
96408a79 SA |
9819 | case DW_TAG_GNU_call_site: |
9820 | read_call_site_scope (die, cu); | |
9821 | break; | |
c906108c | 9822 | case DW_TAG_class_type: |
680b30c7 | 9823 | case DW_TAG_interface_type: |
c906108c SS |
9824 | case DW_TAG_structure_type: |
9825 | case DW_TAG_union_type: | |
134d01f1 | 9826 | process_structure_scope (die, cu); |
c906108c SS |
9827 | break; |
9828 | case DW_TAG_enumeration_type: | |
134d01f1 | 9829 | process_enumeration_scope (die, cu); |
c906108c | 9830 | break; |
134d01f1 | 9831 | |
f792889a DJ |
9832 | /* These dies have a type, but processing them does not create |
9833 | a symbol or recurse to process the children. Therefore we can | |
9834 | read them on-demand through read_type_die. */ | |
c906108c | 9835 | case DW_TAG_subroutine_type: |
72019c9c | 9836 | case DW_TAG_set_type: |
c906108c | 9837 | case DW_TAG_pointer_type: |
c906108c | 9838 | case DW_TAG_ptr_to_member_type: |
c906108c | 9839 | case DW_TAG_reference_type: |
4297a3f0 | 9840 | case DW_TAG_rvalue_reference_type: |
c906108c | 9841 | case DW_TAG_string_type: |
c906108c | 9842 | break; |
134d01f1 | 9843 | |
d8f62e84 TT |
9844 | case DW_TAG_array_type: |
9845 | /* We only need to handle this case for Ada -- in other | |
9846 | languages, it's normal for the compiler to emit a typedef | |
9847 | instead. */ | |
9848 | if (cu->language != language_ada) | |
9849 | break; | |
9850 | /* FALLTHROUGH */ | |
c906108c | 9851 | case DW_TAG_base_type: |
a02abb62 | 9852 | case DW_TAG_subrange_type: |
cb249c71 | 9853 | case DW_TAG_typedef: |
134d01f1 | 9854 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 9855 | DW_AT_name. */ |
f792889a | 9856 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9857 | break; |
c906108c | 9858 | case DW_TAG_common_block: |
e7c27a73 | 9859 | read_common_block (die, cu); |
c906108c SS |
9860 | break; |
9861 | case DW_TAG_common_inclusion: | |
9862 | break; | |
d9fa45fe | 9863 | case DW_TAG_namespace: |
9068261f | 9864 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9865 | read_namespace (die, cu); |
d9fa45fe | 9866 | break; |
5d7cb8df | 9867 | case DW_TAG_module: |
9068261f | 9868 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9869 | read_module (die, cu); |
9870 | break; | |
d9fa45fe | 9871 | case DW_TAG_imported_declaration: |
9068261f | 9872 | cu->processing_has_namespace_info = true; |
74921315 KS |
9873 | if (read_namespace_alias (die, cu)) |
9874 | break; | |
86a73007 TT |
9875 | /* The declaration is not a global namespace alias. */ |
9876 | /* Fall through. */ | |
d9fa45fe | 9877 | case DW_TAG_imported_module: |
9068261f | 9878 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9879 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9880 | || cu->language != language_fortran)) | |
b98664d3 | 9881 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9882 | dwarf_tag_name (die->tag)); |
9883 | read_import_statement (die, cu); | |
d9fa45fe | 9884 | break; |
95554aad TT |
9885 | |
9886 | case DW_TAG_imported_unit: | |
9887 | process_imported_unit_die (die, cu); | |
9888 | break; | |
9889 | ||
71a3c369 TT |
9890 | case DW_TAG_variable: |
9891 | read_variable (die, cu); | |
9892 | break; | |
9893 | ||
c906108c | 9894 | default: |
e7c27a73 | 9895 | new_symbol (die, NULL, cu); |
c906108c SS |
9896 | break; |
9897 | } | |
9898 | } | |
ca69b9e6 DE |
9899 | \f |
9900 | /* DWARF name computation. */ | |
c906108c | 9901 | |
94af9270 KS |
9902 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9903 | needs to have the name of the scope prepended to the name listed in the | |
9904 | die. */ | |
9905 | ||
9906 | static int | |
9907 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9908 | { | |
1c809c68 TT |
9909 | struct attribute *attr; |
9910 | ||
94af9270 KS |
9911 | switch (die->tag) |
9912 | { | |
9913 | case DW_TAG_namespace: | |
9914 | case DW_TAG_typedef: | |
9915 | case DW_TAG_class_type: | |
9916 | case DW_TAG_interface_type: | |
9917 | case DW_TAG_structure_type: | |
9918 | case DW_TAG_union_type: | |
9919 | case DW_TAG_enumeration_type: | |
9920 | case DW_TAG_enumerator: | |
9921 | case DW_TAG_subprogram: | |
08a76f8a | 9922 | case DW_TAG_inlined_subroutine: |
94af9270 | 9923 | case DW_TAG_member: |
74921315 | 9924 | case DW_TAG_imported_declaration: |
94af9270 KS |
9925 | return 1; |
9926 | ||
9927 | case DW_TAG_variable: | |
c2b0a229 | 9928 | case DW_TAG_constant: |
94af9270 KS |
9929 | /* We only need to prefix "globally" visible variables. These include |
9930 | any variable marked with DW_AT_external or any variable that | |
9931 | lives in a namespace. [Variables in anonymous namespaces | |
9932 | require prefixing, but they are not DW_AT_external.] */ | |
9933 | ||
9934 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9935 | { | |
9936 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9937 | |
94af9270 KS |
9938 | return die_needs_namespace (die_specification (die, &spec_cu), |
9939 | spec_cu); | |
9940 | } | |
9941 | ||
1c809c68 | 9942 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9943 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9944 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9945 | return 0; |
9946 | /* A variable in a lexical block of some kind does not need a | |
9947 | namespace, even though in C++ such variables may be external | |
9948 | and have a mangled name. */ | |
9949 | if (die->parent->tag == DW_TAG_lexical_block | |
9950 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9951 | || die->parent->tag == DW_TAG_catch_block |
9952 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9953 | return 0; |
9954 | return 1; | |
94af9270 KS |
9955 | |
9956 | default: | |
9957 | return 0; | |
9958 | } | |
9959 | } | |
9960 | ||
73b9be8b KS |
9961 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9962 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9963 | defined for the given DIE. */ | |
9964 | ||
9965 | static struct attribute * | |
9966 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9967 | { | |
9968 | struct attribute *attr; | |
9969 | ||
9970 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9971 | if (attr == NULL) | |
9972 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9973 | ||
9974 | return attr; | |
9975 | } | |
9976 | ||
9977 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9978 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9979 | defined for the given DIE. */ | |
9980 | ||
9981 | static const char * | |
9982 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9983 | { | |
9984 | const char *linkage_name; | |
9985 | ||
9986 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9987 | if (linkage_name == NULL) | |
9988 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9989 | ||
787de330 TT |
9990 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
9991 | See https://github.com/rust-lang/rust/issues/32925. */ | |
9992 | if (cu->language == language_rust && linkage_name != NULL | |
9993 | && strchr (linkage_name, '{') != NULL) | |
9994 | linkage_name = NULL; | |
9995 | ||
73b9be8b KS |
9996 | return linkage_name; |
9997 | } | |
9998 | ||
94af9270 | 9999 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10000 | compute the physname for the object, which include a method's: |
9c37b5ae | 10001 | - formal parameters (C++), |
a766d390 | 10002 | - receiver type (Go), |
a766d390 DE |
10003 | |
10004 | The term "physname" is a bit confusing. | |
10005 | For C++, for example, it is the demangled name. | |
10006 | For Go, for example, it's the mangled name. | |
94af9270 | 10007 | |
af6b7be1 JB |
10008 | For Ada, return the DIE's linkage name rather than the fully qualified |
10009 | name. PHYSNAME is ignored.. | |
10010 | ||
5989a64e | 10011 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10012 | canonicalized. */ |
94af9270 KS |
10013 | |
10014 | static const char * | |
15d034d0 TT |
10015 | dwarf2_compute_name (const char *name, |
10016 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10017 | int physname) |
10018 | { | |
5e22e966 | 10019 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10020 | |
94af9270 KS |
10021 | if (name == NULL) |
10022 | name = dwarf2_name (die, cu); | |
10023 | ||
2ee7123e DE |
10024 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10025 | but otherwise compute it by typename_concat inside GDB. | |
10026 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10027 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10028 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10029 | will set the demangled name to the result of dwarf2_full_name, and it is |
10030 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10031 | if (cu->language == language_ada |
10032 | || (cu->language == language_fortran && physname)) | |
10033 | { | |
10034 | /* For Ada unit, we prefer the linkage name over the name, as | |
10035 | the former contains the exported name, which the user expects | |
10036 | to be able to reference. Ideally, we want the user to be able | |
10037 | to reference this entity using either natural or linkage name, | |
10038 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10039 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10040 | |
2ee7123e DE |
10041 | if (linkage_name != NULL) |
10042 | return linkage_name; | |
f55ee35c JK |
10043 | } |
10044 | ||
94af9270 KS |
10045 | /* These are the only languages we know how to qualify names in. */ |
10046 | if (name != NULL | |
9c37b5ae | 10047 | && (cu->language == language_cplus |
c44af4eb TT |
10048 | || cu->language == language_fortran || cu->language == language_d |
10049 | || cu->language == language_rust)) | |
94af9270 KS |
10050 | { |
10051 | if (die_needs_namespace (die, cu)) | |
10052 | { | |
0d5cff50 | 10053 | const char *prefix; |
34a68019 | 10054 | const char *canonical_name = NULL; |
94af9270 | 10055 | |
d7e74731 PA |
10056 | string_file buf; |
10057 | ||
94af9270 | 10058 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10059 | if (*prefix != '\0') |
10060 | { | |
43816ebc TT |
10061 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10062 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10063 | |
43816ebc | 10064 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10065 | } |
10066 | else | |
d7e74731 | 10067 | buf.puts (name); |
94af9270 | 10068 | |
98bfdba5 PA |
10069 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10070 | as children with DW_TAG_template_type_param or | |
10071 | DW_TAG_value_type_param. If the latter, add them to the name | |
10072 | here. If the name already has template parameters, then | |
10073 | skip this step; some versions of GCC emit both, and | |
10074 | it is more efficient to use the pre-computed name. | |
10075 | ||
10076 | Something to keep in mind about this process: it is very | |
10077 | unlikely, or in some cases downright impossible, to produce | |
10078 | something that will match the mangled name of a function. | |
10079 | If the definition of the function has the same debug info, | |
10080 | we should be able to match up with it anyway. But fallbacks | |
10081 | using the minimal symbol, for instance to find a method | |
10082 | implemented in a stripped copy of libstdc++, will not work. | |
10083 | If we do not have debug info for the definition, we will have to | |
10084 | match them up some other way. | |
10085 | ||
10086 | When we do name matching there is a related problem with function | |
10087 | templates; two instantiated function templates are allowed to | |
10088 | differ only by their return types, which we do not add here. */ | |
10089 | ||
10090 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10091 | { | |
10092 | struct attribute *attr; | |
10093 | struct die_info *child; | |
10094 | int first = 1; | |
2c75ccb2 | 10095 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10096 | |
10097 | die->building_fullname = 1; | |
10098 | ||
10099 | for (child = die->child; child != NULL; child = child->sibling) | |
10100 | { | |
10101 | struct type *type; | |
12df843f | 10102 | LONGEST value; |
d521ce57 | 10103 | const gdb_byte *bytes; |
98bfdba5 PA |
10104 | struct dwarf2_locexpr_baton *baton; |
10105 | struct value *v; | |
10106 | ||
10107 | if (child->tag != DW_TAG_template_type_param | |
10108 | && child->tag != DW_TAG_template_value_param) | |
10109 | continue; | |
10110 | ||
10111 | if (first) | |
10112 | { | |
d7e74731 | 10113 | buf.puts ("<"); |
98bfdba5 PA |
10114 | first = 0; |
10115 | } | |
10116 | else | |
d7e74731 | 10117 | buf.puts (", "); |
98bfdba5 PA |
10118 | |
10119 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10120 | if (attr == NULL) | |
10121 | { | |
b98664d3 | 10122 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10123 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10124 | continue; |
10125 | } | |
10126 | type = die_type (child, cu); | |
10127 | ||
10128 | if (child->tag == DW_TAG_template_type_param) | |
10129 | { | |
2c75ccb2 AB |
10130 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10131 | &type_print_raw_options); | |
98bfdba5 PA |
10132 | continue; |
10133 | } | |
10134 | ||
10135 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10136 | if (attr == NULL) | |
10137 | { | |
b98664d3 | 10138 | complaint (_("template parameter missing " |
3e43a32a | 10139 | "DW_AT_const_value")); |
d7e74731 | 10140 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10141 | continue; |
10142 | } | |
10143 | ||
10144 | dwarf2_const_value_attr (attr, type, name, | |
10145 | &cu->comp_unit_obstack, cu, | |
10146 | &value, &bytes, &baton); | |
10147 | ||
20ce4123 | 10148 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10149 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10150 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10151 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10152 | else |
10153 | { | |
10154 | struct value_print_options opts; | |
10155 | ||
10156 | if (baton != NULL) | |
10157 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10158 | baton->data, | |
10159 | baton->size, | |
9f47c707 SM |
10160 | baton->per_cu, |
10161 | baton->per_objfile); | |
98bfdba5 PA |
10162 | else if (bytes != NULL) |
10163 | { | |
10164 | v = allocate_value (type); | |
10165 | memcpy (value_contents_writeable (v), bytes, | |
10166 | TYPE_LENGTH (type)); | |
10167 | } | |
10168 | else | |
10169 | v = value_from_longest (type, value); | |
10170 | ||
3e43a32a MS |
10171 | /* Specify decimal so that we do not depend on |
10172 | the radix. */ | |
98bfdba5 PA |
10173 | get_formatted_print_options (&opts, 'd'); |
10174 | opts.raw = 1; | |
d7e74731 | 10175 | value_print (v, &buf, &opts); |
98bfdba5 | 10176 | release_value (v); |
98bfdba5 PA |
10177 | } |
10178 | } | |
10179 | ||
10180 | die->building_fullname = 0; | |
10181 | ||
10182 | if (!first) | |
10183 | { | |
10184 | /* Close the argument list, with a space if necessary | |
10185 | (nested templates). */ | |
d7e74731 PA |
10186 | if (!buf.empty () && buf.string ().back () == '>') |
10187 | buf.puts (" >"); | |
98bfdba5 | 10188 | else |
d7e74731 | 10189 | buf.puts (">"); |
98bfdba5 PA |
10190 | } |
10191 | } | |
10192 | ||
9c37b5ae | 10193 | /* For C++ methods, append formal parameter type |
94af9270 | 10194 | information, if PHYSNAME. */ |
6e70227d | 10195 | |
94af9270 | 10196 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10197 | && cu->language == language_cplus) |
94af9270 KS |
10198 | { |
10199 | struct type *type = read_type_die (die, cu); | |
10200 | ||
d7e74731 | 10201 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10202 | &type_print_raw_options); |
94af9270 | 10203 | |
9c37b5ae | 10204 | if (cu->language == language_cplus) |
94af9270 | 10205 | { |
60430eff DJ |
10206 | /* Assume that an artificial first parameter is |
10207 | "this", but do not crash if it is not. RealView | |
10208 | marks unnamed (and thus unused) parameters as | |
10209 | artificial; there is no way to differentiate | |
10210 | the two cases. */ | |
1f704f76 | 10211 | if (type->num_fields () > 0 |
94af9270 | 10212 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10213 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10214 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10215 | buf.puts (" const"); |
94af9270 KS |
10216 | } |
10217 | } | |
10218 | ||
d7e74731 | 10219 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10220 | |
10221 | if (cu->language == language_cplus) | |
34a68019 | 10222 | canonical_name |
322a8516 | 10223 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10224 | objfile); |
34a68019 TT |
10225 | |
10226 | /* If we only computed INTERMEDIATE_NAME, or if | |
10227 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10228 | intern it. */ |
322a8516 | 10229 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10230 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10231 | else |
10232 | name = canonical_name; | |
94af9270 KS |
10233 | } |
10234 | } | |
10235 | ||
10236 | return name; | |
10237 | } | |
10238 | ||
0114d602 DJ |
10239 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10240 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10241 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10242 | not have a name. NAME may either be from a previous call to |
10243 | dwarf2_name or NULL. | |
10244 | ||
9c37b5ae | 10245 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10246 | |
10247 | static const char * | |
15d034d0 | 10248 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10249 | { |
94af9270 KS |
10250 | return dwarf2_compute_name (name, die, cu, 0); |
10251 | } | |
0114d602 | 10252 | |
94af9270 KS |
10253 | /* Construct a physname for the given DIE in CU. NAME may either be |
10254 | from a previous call to dwarf2_name or NULL. The result will be | |
10255 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10256 | name. | |
0114d602 | 10257 | |
9c37b5ae | 10258 | The output string will be canonicalized (if C++). */ |
0114d602 | 10259 | |
94af9270 | 10260 | static const char * |
15d034d0 | 10261 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10262 | { |
5e22e966 | 10263 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10264 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10265 | int need_copy = 1; |
10266 | ||
10267 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10268 | on its own. */ | |
10269 | if (!die_needs_namespace (die, cu)) | |
10270 | return dwarf2_compute_name (name, die, cu, 1); | |
10271 | ||
906bb4c5 TT |
10272 | if (cu->language != language_rust) |
10273 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10274 | |
10275 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10276 | has computed. */ | |
791afaa2 | 10277 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10278 | if (mangled != NULL) |
900e11f9 | 10279 | { |
900e11f9 | 10280 | |
d3355e4d | 10281 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10282 | { |
10283 | /* Do nothing (do not demangle the symbol name). */ | |
10284 | } | |
a766d390 DE |
10285 | else |
10286 | { | |
0eb876f5 JB |
10287 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10288 | their return type. It is easier for GDB users to search | |
10289 | for such functions as `name(params)' than `long name(params)'. | |
10290 | In such case the minimal symbol names do not match the full | |
10291 | symbol names but for template functions there is never a need | |
10292 | to look up their definition from their declaration so | |
10293 | the only disadvantage remains the minimal symbol variant | |
10294 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10295 | demangled.reset (gdb_demangle (mangled, |
10296 | (DMGL_PARAMS | DMGL_ANSI | |
10297 | | DMGL_RET_DROP))); | |
a766d390 | 10298 | } |
900e11f9 | 10299 | if (demangled) |
791afaa2 | 10300 | canon = demangled.get (); |
900e11f9 JK |
10301 | else |
10302 | { | |
10303 | canon = mangled; | |
10304 | need_copy = 0; | |
10305 | } | |
10306 | } | |
10307 | ||
10308 | if (canon == NULL || check_physname) | |
10309 | { | |
10310 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10311 | ||
10312 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10313 | { | |
10314 | /* It may not mean a bug in GDB. The compiler could also | |
10315 | compute DW_AT_linkage_name incorrectly. But in such case | |
10316 | GDB would need to be bug-to-bug compatible. */ | |
10317 | ||
b98664d3 | 10318 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10319 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10320 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10321 | objfile_name (objfile)); |
900e11f9 JK |
10322 | |
10323 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10324 | is available here - over computed PHYSNAME. It is safer | |
10325 | against both buggy GDB and buggy compilers. */ | |
10326 | ||
10327 | retval = canon; | |
10328 | } | |
10329 | else | |
10330 | { | |
10331 | retval = physname; | |
10332 | need_copy = 0; | |
10333 | } | |
10334 | } | |
10335 | else | |
10336 | retval = canon; | |
10337 | ||
10338 | if (need_copy) | |
be1e3d3e | 10339 | retval = objfile->intern (retval); |
900e11f9 | 10340 | |
900e11f9 | 10341 | return retval; |
0114d602 DJ |
10342 | } |
10343 | ||
74921315 KS |
10344 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10345 | a new symbol for it. | |
10346 | ||
10347 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10348 | ||
10349 | static int | |
10350 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10351 | { | |
10352 | struct attribute *attr; | |
10353 | ||
10354 | /* If the die does not have a name, this is not a namespace | |
10355 | alias. */ | |
10356 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10357 | if (attr != NULL) | |
10358 | { | |
10359 | int num; | |
10360 | struct die_info *d = die; | |
10361 | struct dwarf2_cu *imported_cu = cu; | |
10362 | ||
10363 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10364 | keep inspecting DIEs until we hit the underlying import. */ | |
10365 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10366 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10367 | { | |
10368 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10369 | if (attr == NULL) | |
10370 | break; | |
10371 | ||
10372 | d = follow_die_ref (d, attr, &imported_cu); | |
10373 | if (d->tag != DW_TAG_imported_declaration) | |
10374 | break; | |
10375 | } | |
10376 | ||
10377 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10378 | { | |
b98664d3 | 10379 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10380 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10381 | return 0; |
10382 | } | |
10383 | ||
10384 | if (attr != NULL) | |
10385 | { | |
10386 | struct type *type; | |
0826b30a | 10387 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10388 | |
aa66c379 | 10389 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10390 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10391 | { |
10392 | /* This declaration is a global namespace alias. Add | |
10393 | a symbol for it whose type is the aliased namespace. */ | |
10394 | new_symbol (die, type, cu); | |
10395 | return 1; | |
10396 | } | |
10397 | } | |
10398 | } | |
10399 | ||
10400 | return 0; | |
10401 | } | |
10402 | ||
22cee43f | 10403 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10404 | current context for CU. |
22cee43f PMR |
10405 | |
10406 | For Ada, imported declarations can materialize renamings, which *may* be | |
10407 | global. However it is impossible (for now?) in DWARF to distinguish | |
10408 | "external" imported declarations and "static" ones. As all imported | |
10409 | declarations seem to be static in all other languages, make them all CU-wide | |
10410 | global only in Ada. */ | |
10411 | ||
10412 | static struct using_direct ** | |
804d2729 | 10413 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10414 | { |
c24bdb02 KS |
10415 | if (cu->language == language_ada |
10416 | && cu->get_builder ()->outermost_context_p ()) | |
10417 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10418 | else |
c24bdb02 | 10419 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10420 | } |
10421 | ||
27aa8d6a SW |
10422 | /* Read the import statement specified by the given die and record it. */ |
10423 | ||
10424 | static void | |
10425 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10426 | { | |
5e22e966 | 10427 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10428 | struct attribute *import_attr; |
32019081 | 10429 | struct die_info *imported_die, *child_die; |
de4affc9 | 10430 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10431 | const char *imported_name; |
794684b6 | 10432 | const char *imported_name_prefix; |
13387711 SW |
10433 | const char *canonical_name; |
10434 | const char *import_alias; | |
10435 | const char *imported_declaration = NULL; | |
794684b6 | 10436 | const char *import_prefix; |
eb1e02fd | 10437 | std::vector<const char *> excludes; |
13387711 | 10438 | |
27aa8d6a SW |
10439 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10440 | if (import_attr == NULL) | |
10441 | { | |
b98664d3 | 10442 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10443 | dwarf_tag_name (die->tag)); |
10444 | return; | |
10445 | } | |
10446 | ||
de4affc9 CC |
10447 | imported_cu = cu; |
10448 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10449 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10450 | if (imported_name == NULL) |
10451 | { | |
10452 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10453 | ||
dda83cd7 SM |
10454 | The import in the following code: |
10455 | namespace A | |
10456 | { | |
10457 | typedef int B; | |
10458 | } | |
10459 | ||
10460 | int main () | |
10461 | { | |
10462 | using A::B; | |
10463 | B b; | |
10464 | return b; | |
10465 | } | |
10466 | ||
10467 | ... | |
10468 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10469 | <52> DW_AT_decl_file : 1 | |
10470 | <53> DW_AT_decl_line : 6 | |
10471 | <54> DW_AT_import : <0x75> | |
10472 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10473 | <59> DW_AT_name : B | |
10474 | <5b> DW_AT_decl_file : 1 | |
10475 | <5c> DW_AT_decl_line : 2 | |
10476 | <5d> DW_AT_type : <0x6e> | |
10477 | ... | |
10478 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10479 | <76> DW_AT_byte_size : 4 | |
10480 | <77> DW_AT_encoding : 5 (signed) | |
10481 | ||
10482 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10483 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10484 | return; |
10485 | } | |
10486 | ||
82856980 SW |
10487 | /* Figure out the local name after import. */ |
10488 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10489 | |
794684b6 SW |
10490 | /* Figure out where the statement is being imported to. */ |
10491 | import_prefix = determine_prefix (die, cu); | |
10492 | ||
10493 | /* Figure out what the scope of the imported die is and prepend it | |
10494 | to the name of the imported die. */ | |
de4affc9 | 10495 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10496 | |
f55ee35c JK |
10497 | if (imported_die->tag != DW_TAG_namespace |
10498 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10499 | { |
13387711 SW |
10500 | imported_declaration = imported_name; |
10501 | canonical_name = imported_name_prefix; | |
794684b6 | 10502 | } |
13387711 | 10503 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10504 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10505 | imported_name_prefix, |
10506 | (cu->language == language_d ? "." : "::"), | |
10507 | imported_name, (char *) NULL); | |
13387711 SW |
10508 | else |
10509 | canonical_name = imported_name; | |
794684b6 | 10510 | |
32019081 JK |
10511 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10512 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10513 | child_die = child_die->sibling) |
32019081 JK |
10514 | { |
10515 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10516 | represented by an imported module entry with an import attribute | |
10517 | referring to the module and owned entries corresponding to those | |
10518 | entities that are renamed as part of being imported. */ | |
10519 | ||
10520 | if (child_die->tag != DW_TAG_imported_declaration) | |
10521 | { | |
b98664d3 | 10522 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10523 | "- DIE at %s [in module %s]"), |
10524 | sect_offset_str (child_die->sect_off), | |
10525 | objfile_name (objfile)); | |
32019081 JK |
10526 | continue; |
10527 | } | |
10528 | ||
10529 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10530 | if (import_attr == NULL) | |
10531 | { | |
b98664d3 | 10532 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10533 | dwarf_tag_name (child_die->tag)); |
10534 | continue; | |
10535 | } | |
10536 | ||
10537 | imported_cu = cu; | |
10538 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10539 | &imported_cu); | |
10540 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10541 | if (imported_name == NULL) | |
10542 | { | |
b98664d3 | 10543 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10544 | "imported name - DIE at %s [in module %s]"), |
10545 | sect_offset_str (child_die->sect_off), | |
10546 | objfile_name (objfile)); | |
32019081 JK |
10547 | continue; |
10548 | } | |
10549 | ||
eb1e02fd | 10550 | excludes.push_back (imported_name); |
32019081 JK |
10551 | |
10552 | process_die (child_die, cu); | |
10553 | } | |
10554 | ||
804d2729 | 10555 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10556 | import_prefix, |
10557 | canonical_name, | |
10558 | import_alias, | |
10559 | imported_declaration, | |
10560 | excludes, | |
10561 | 0, | |
10562 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10563 | } |
10564 | ||
5230b05a WT |
10565 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10566 | types, but gives them a size of zero. Starting with version 14, | |
10567 | ICC is compatible with GCC. */ | |
10568 | ||
9068261f | 10569 | static bool |
5230b05a WT |
10570 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10571 | { | |
10572 | if (!cu->checked_producer) | |
10573 | check_producer (cu); | |
10574 | ||
10575 | return cu->producer_is_icc_lt_14; | |
10576 | } | |
10577 | ||
eb77c9df AB |
10578 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10579 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10580 | which says that void functions should not have a DW_AT_type. */ | |
10581 | ||
10582 | static bool | |
10583 | producer_is_icc (struct dwarf2_cu *cu) | |
10584 | { | |
10585 | if (!cu->checked_producer) | |
10586 | check_producer (cu); | |
10587 | ||
10588 | return cu->producer_is_icc; | |
10589 | } | |
10590 | ||
1b80a9fa JK |
10591 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10592 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10593 | this, it was first present in GCC release 4.3.0. */ | |
10594 | ||
9068261f | 10595 | static bool |
1b80a9fa JK |
10596 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10597 | { | |
10598 | if (!cu->checked_producer) | |
10599 | check_producer (cu); | |
10600 | ||
10601 | return cu->producer_is_gcc_lt_4_3; | |
10602 | } | |
10603 | ||
d721ba37 PA |
10604 | static file_and_directory |
10605 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10606 | { |
d721ba37 PA |
10607 | file_and_directory res; |
10608 | ||
9291a0cd TT |
10609 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10610 | is not a source language identifier. */ | |
d721ba37 PA |
10611 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10612 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10613 | |
d721ba37 PA |
10614 | if (res.comp_dir == NULL |
10615 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10616 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10617 | { |
d721ba37 PA |
10618 | res.comp_dir_storage = ldirname (res.name); |
10619 | if (!res.comp_dir_storage.empty ()) | |
10620 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10621 | } |
d721ba37 | 10622 | if (res.comp_dir != NULL) |
9291a0cd TT |
10623 | { |
10624 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10625 | directory, get rid of it. */ | |
d721ba37 | 10626 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10627 | |
d721ba37 PA |
10628 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10629 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10630 | } |
10631 | ||
d721ba37 PA |
10632 | if (res.name == NULL) |
10633 | res.name = "<unknown>"; | |
10634 | ||
10635 | return res; | |
9291a0cd TT |
10636 | } |
10637 | ||
f4dc4d17 DE |
10638 | /* Handle DW_AT_stmt_list for a compilation unit. |
10639 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10640 | COMP_DIR is the compilation directory. LOWPC is passed to |
10641 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10642 | |
10643 | static void | |
10644 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10645 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10646 | { |
976ca316 | 10647 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10648 | struct attribute *attr; |
527f3840 JK |
10649 | struct line_header line_header_local; |
10650 | hashval_t line_header_local_hash; | |
527f3840 JK |
10651 | void **slot; |
10652 | int decode_mapping; | |
2ab95328 | 10653 | |
f4dc4d17 DE |
10654 | gdb_assert (! cu->per_cu->is_debug_types); |
10655 | ||
2ab95328 | 10656 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 10657 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
10658 | return; |
10659 | ||
d4df075e | 10660 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
10661 | |
10662 | /* The line header hash table is only created if needed (it exists to | |
10663 | prevent redundant reading of the line table for partial_units). | |
10664 | If we're given a partial_unit, we'll need it. If we're given a | |
10665 | compile_unit, then use the line header hash table if it's already | |
10666 | created, but don't create one just yet. */ | |
10667 | ||
976ca316 | 10668 | if (per_objfile->line_header_hash == NULL |
527f3840 | 10669 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10670 | { |
976ca316 | 10671 | per_objfile->line_header_hash |
d15acc42 TT |
10672 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10673 | line_header_eq_voidp, | |
10674 | free_line_header_voidp, | |
10675 | xcalloc, xfree)); | |
527f3840 | 10676 | } |
2ab95328 | 10677 | |
9c541725 | 10678 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10679 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10680 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 10681 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 10682 | { |
976ca316 | 10683 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10684 | &line_header_local, |
10685 | line_header_local_hash, NO_INSERT); | |
10686 | ||
10687 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10688 | is not present in *SLOT (since if there is something in *SLOT then | |
10689 | it will be for a partial_unit). */ | |
10690 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10691 | { |
527f3840 | 10692 | gdb_assert (*slot != NULL); |
9a3c8263 | 10693 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10694 | return; |
dee91e82 | 10695 | } |
2ab95328 | 10696 | } |
527f3840 JK |
10697 | |
10698 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10699 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10700 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10701 | if (lh == NULL) | |
527f3840 | 10702 | return; |
4c8aa72d PA |
10703 | |
10704 | cu->line_header = lh.release (); | |
10705 | cu->line_header_die_owner = die; | |
527f3840 | 10706 | |
976ca316 | 10707 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
10708 | slot = NULL; |
10709 | else | |
10710 | { | |
976ca316 | 10711 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10712 | &line_header_local, |
10713 | line_header_local_hash, INSERT); | |
10714 | gdb_assert (slot != NULL); | |
10715 | } | |
10716 | if (slot != NULL && *slot == NULL) | |
10717 | { | |
10718 | /* This newly decoded line number information unit will be owned | |
10719 | by line_header_hash hash table. */ | |
10720 | *slot = cu->line_header; | |
4c8aa72d | 10721 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10722 | } |
10723 | else | |
10724 | { | |
10725 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 10726 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
10727 | line_header for this CU - it may happen at most once for each line |
10728 | number information unit. And if we're not using line_header_hash | |
10729 | then this is what we want as well. */ | |
10730 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10731 | } |
10732 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10733 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10734 | decode_mapping); | |
fff8551c | 10735 | |
2ab95328 TT |
10736 | } |
10737 | ||
95554aad | 10738 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10739 | |
c906108c | 10740 | static void |
e7c27a73 | 10741 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10742 | { |
976ca316 SM |
10743 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10744 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10745 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10746 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10747 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10748 | struct attribute *attr; | |
c906108c | 10749 | struct die_info *child_die; |
e142c38c | 10750 | CORE_ADDR baseaddr; |
6e70227d | 10751 | |
380618d6 | 10752 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10753 | baseaddr = objfile->text_section_offset (); |
c906108c | 10754 | |
fae299cd | 10755 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10756 | |
10757 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10758 | from finish_block. */ | |
2acceee2 | 10759 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10760 | lowpc = highpc; |
3e29f34a | 10761 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10762 | |
d721ba37 | 10763 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10764 | |
f4b8a18d KW |
10765 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10766 | standardised yet. As a workaround for the language detection we fall | |
10767 | back to the DW_AT_producer string. */ | |
10768 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10769 | cu->language = language_opencl; | |
10770 | ||
3019eac3 DE |
10771 | /* Similar hack for Go. */ |
10772 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10773 | set_cu_language (DW_LANG_Go, cu); | |
10774 | ||
c24bdb02 | 10775 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10776 | |
10777 | /* Decode line number information if present. We do this before | |
10778 | processing child DIEs, so that the line header table is available | |
10779 | for DW_AT_decl_file. */ | |
d721ba37 | 10780 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10781 | |
10782 | /* Process all dies in compilation unit. */ | |
10783 | if (die->child != NULL) | |
10784 | { | |
10785 | child_die = die->child; | |
10786 | while (child_die && child_die->tag) | |
10787 | { | |
10788 | process_die (child_die, cu); | |
436c571c | 10789 | child_die = child_die->sibling; |
3019eac3 DE |
10790 | } |
10791 | } | |
10792 | ||
10793 | /* Decode macro information, if present. Dwarf 2 macro information | |
10794 | refers to information in the line number info statement program | |
10795 | header, so we can only read it if we've read the header | |
10796 | successfully. */ | |
0af92d60 JK |
10797 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10798 | if (attr == NULL) | |
10799 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 10800 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
10801 | { |
10802 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10803 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10804 | |
529908cb | 10805 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
10806 | } |
10807 | else | |
10808 | { | |
10809 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 10810 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 10811 | { |
529908cb | 10812 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 10813 | |
43f3e411 | 10814 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10815 | } |
10816 | } | |
3019eac3 DE |
10817 | } |
10818 | ||
c24bdb02 KS |
10819 | void |
10820 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10821 | { |
f4dc4d17 DE |
10822 | struct type_unit_group *tu_group; |
10823 | int first_time; | |
3019eac3 | 10824 | struct attribute *attr; |
9c541725 | 10825 | unsigned int i; |
0186c6a7 | 10826 | struct signatured_type *sig_type; |
3019eac3 | 10827 | |
f4dc4d17 | 10828 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10829 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10830 | |
c24bdb02 | 10831 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10832 | |
f4dc4d17 | 10833 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10834 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10835 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10836 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10837 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10838 | |
10839 | /* If we've already processed this stmt_list there's no real need to | |
10840 | do it again, we could fake it and just recreate the part we need | |
10841 | (file name,index -> symtab mapping). If data shows this optimization | |
10842 | is useful we can do it then. */ | |
8adb8487 TT |
10843 | type_unit_group_unshareable *tug_unshare |
10844 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
10845 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
10846 | |
10847 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10848 | debug info. */ | |
fff8551c | 10849 | line_header_up lh; |
d4df075e | 10850 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 10851 | { |
d4df075e | 10852 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 10853 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10854 | } |
10855 | if (lh == NULL) | |
10856 | { | |
10857 | if (first_time) | |
c24bdb02 | 10858 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10859 | else |
10860 | { | |
8adb8487 | 10861 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 10862 | gdb_assert (m_builder == nullptr); |
8adb8487 | 10863 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
10864 | m_builder.reset (new struct buildsym_compunit |
10865 | (COMPUNIT_OBJFILE (cust), "", | |
10866 | COMPUNIT_DIRNAME (cust), | |
10867 | compunit_language (cust), | |
10868 | 0, cust)); | |
770479f2 | 10869 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 10870 | } |
f4dc4d17 | 10871 | return; |
3019eac3 DE |
10872 | } |
10873 | ||
c24bdb02 KS |
10874 | line_header = lh.release (); |
10875 | line_header_die_owner = die; | |
3019eac3 | 10876 | |
f4dc4d17 DE |
10877 | if (first_time) |
10878 | { | |
c24bdb02 | 10879 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10880 | |
1fd60fc0 DE |
10881 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10882 | still initializing it, and our caller (a few levels up) | |
10883 | process_full_type_unit still needs to know if this is the first | |
10884 | time. */ | |
10885 | ||
8adb8487 | 10886 | tug_unshare->symtabs |
4ac93832 TT |
10887 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
10888 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10889 | |
7ba99d21 AT |
10890 | auto &file_names = line_header->file_names (); |
10891 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10892 | { |
7ba99d21 | 10893 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10894 | dwarf2_start_subfile (this, fe.name, |
10895 | fe.include_dir (line_header)); | |
10896 | buildsym_compunit *b = get_builder (); | |
10897 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10898 | { |
4c8aa72d PA |
10899 | /* NOTE: start_subfile will recognize when it's been |
10900 | passed a file it has already seen. So we can't | |
10901 | assume there's a simple mapping from | |
10902 | cu->line_header->file_names to subfiles, plus | |
10903 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10904 | b->get_current_subfile ()->symtab |
10905 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10906 | } |
10907 | ||
c24bdb02 | 10908 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 10909 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10910 | } |
10911 | } | |
10912 | else | |
3019eac3 | 10913 | { |
c24bdb02 | 10914 | gdb_assert (m_builder == nullptr); |
8adb8487 | 10915 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
10916 | m_builder.reset (new struct buildsym_compunit |
10917 | (COMPUNIT_OBJFILE (cust), "", | |
10918 | COMPUNIT_DIRNAME (cust), | |
10919 | compunit_language (cust), | |
10920 | 0, cust)); | |
770479f2 | 10921 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 10922 | |
7ba99d21 AT |
10923 | auto &file_names = line_header->file_names (); |
10924 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10925 | { |
7ba99d21 | 10926 | file_entry &fe = file_names[i]; |
8adb8487 | 10927 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 10928 | } |
3019eac3 DE |
10929 | } |
10930 | ||
f4dc4d17 DE |
10931 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10932 | so they don't have a "real" (so to speak) symtab anyway. | |
10933 | There is later code that will assign the main symtab to all symbols | |
10934 | that don't have one. We need to handle the case of a symbol with a | |
10935 | missing symtab (DW_AT_decl_file) anyway. */ | |
10936 | } | |
3019eac3 | 10937 | |
f4dc4d17 DE |
10938 | /* Process DW_TAG_type_unit. |
10939 | For TUs we want to skip the first top level sibling if it's not the | |
10940 | actual type being defined by this TU. In this case the first top | |
10941 | level sibling is there to provide context only. */ | |
3019eac3 | 10942 | |
f4dc4d17 DE |
10943 | static void |
10944 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10945 | { | |
10946 | struct die_info *child_die; | |
3019eac3 | 10947 | |
f4dc4d17 DE |
10948 | prepare_one_comp_unit (cu, die, language_minimal); |
10949 | ||
10950 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10951 | We do this before processing child DIEs, so that the line header table | |
10952 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10953 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10954 | |
10955 | if (die->child != NULL) | |
10956 | { | |
10957 | child_die = die->child; | |
10958 | while (child_die && child_die->tag) | |
10959 | { | |
10960 | process_die (child_die, cu); | |
436c571c | 10961 | child_die = child_die->sibling; |
f4dc4d17 DE |
10962 | } |
10963 | } | |
3019eac3 DE |
10964 | } |
10965 | \f | |
80626a55 DE |
10966 | /* DWO/DWP files. |
10967 | ||
10968 | http://gcc.gnu.org/wiki/DebugFission | |
10969 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10970 | ||
10971 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10972 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10973 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10974 | |
10975 | static hashval_t | |
10976 | hash_dwo_file (const void *item) | |
10977 | { | |
9a3c8263 | 10978 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10979 | hashval_t hash; |
3019eac3 | 10980 | |
a2ce51a0 DE |
10981 | hash = htab_hash_string (dwo_file->dwo_name); |
10982 | if (dwo_file->comp_dir != NULL) | |
10983 | hash += htab_hash_string (dwo_file->comp_dir); | |
10984 | return hash; | |
3019eac3 DE |
10985 | } |
10986 | ||
10987 | static int | |
10988 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10989 | { | |
9a3c8263 SM |
10990 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10991 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10992 | |
a2ce51a0 DE |
10993 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10994 | return 0; | |
10995 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10996 | return lhs->comp_dir == rhs->comp_dir; | |
10997 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10998 | } |
10999 | ||
11000 | /* Allocate a hash table for DWO files. */ | |
11001 | ||
51ac9db5 | 11002 | static htab_up |
298e9637 | 11003 | allocate_dwo_file_hash_table () |
3019eac3 | 11004 | { |
51ac9db5 SM |
11005 | auto delete_dwo_file = [] (void *item) |
11006 | { | |
11007 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11008 | ||
11009 | delete dwo_file; | |
11010 | }; | |
11011 | ||
bc68fb19 TT |
11012 | return htab_up (htab_create_alloc (41, |
11013 | hash_dwo_file, | |
11014 | eq_dwo_file, | |
11015 | delete_dwo_file, | |
11016 | xcalloc, xfree)); | |
3019eac3 DE |
11017 | } |
11018 | ||
80626a55 DE |
11019 | /* Lookup DWO file DWO_NAME. */ |
11020 | ||
11021 | static void ** | |
976ca316 | 11022 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11023 | const char *dwo_name, |
11024 | const char *comp_dir) | |
80626a55 DE |
11025 | { |
11026 | struct dwo_file find_entry; | |
11027 | void **slot; | |
11028 | ||
976ca316 SM |
11029 | if (per_objfile->per_bfd->dwo_files == NULL) |
11030 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11031 | |
0ac5b59e DE |
11032 | find_entry.dwo_name = dwo_name; |
11033 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11034 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11035 | INSERT); |
80626a55 DE |
11036 | |
11037 | return slot; | |
11038 | } | |
11039 | ||
3019eac3 DE |
11040 | static hashval_t |
11041 | hash_dwo_unit (const void *item) | |
11042 | { | |
9a3c8263 | 11043 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11044 | |
11045 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11046 | return dwo_unit->signature; | |
11047 | } | |
11048 | ||
11049 | static int | |
11050 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11051 | { | |
9a3c8263 SM |
11052 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11053 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11054 | |
11055 | /* The signature is assumed to be unique within the DWO file. | |
11056 | So while object file CU dwo_id's always have the value zero, | |
11057 | that's OK, assuming each object file DWO file has only one CU, | |
11058 | and that's the rule for now. */ | |
11059 | return lhs->signature == rhs->signature; | |
11060 | } | |
11061 | ||
11062 | /* Allocate a hash table for DWO CUs,TUs. | |
11063 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11064 | ||
b0b6a987 | 11065 | static htab_up |
298e9637 | 11066 | allocate_dwo_unit_table () |
3019eac3 DE |
11067 | { |
11068 | /* Start out with a pretty small number. | |
11069 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11070 | return htab_up (htab_create_alloc (3, |
11071 | hash_dwo_unit, | |
11072 | eq_dwo_unit, | |
11073 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11074 | } |
11075 | ||
19c3d4c9 | 11076 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11077 | |
11078 | static void | |
19c3d4c9 DE |
11079 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11080 | const gdb_byte *info_ptr, | |
11081 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11082 | struct dwo_file *dwo_file, |
11083 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11084 | { |
11085 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11086 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11087 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11088 | |
a084a2a6 AT |
11089 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11090 | if (!signature.has_value ()) | |
3019eac3 | 11091 | { |
b98664d3 | 11092 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11093 | " its dwo_id [in module %s]"), |
9d8780f0 | 11094 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11095 | return; |
11096 | } | |
11097 | ||
3019eac3 | 11098 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11099 | dwo_unit->signature = *signature; |
8a0459fd | 11100 | dwo_unit->section = section; |
9c541725 | 11101 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11102 | dwo_unit->length = cu->per_cu->length; |
11103 | ||
6f738b01 SM |
11104 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11105 | sect_offset_str (sect_off), | |
11106 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11107 | } |
11108 | ||
33c5cd75 | 11109 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11110 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11111 | |
33c5cd75 | 11112 | static void |
976ca316 | 11113 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11114 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11115 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11116 | { |
976ca316 SM |
11117 | struct objfile *objfile = per_objfile->objfile; |
11118 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11119 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11120 | |
96b79293 | 11121 | section.read (objfile); |
33c5cd75 | 11122 | info_ptr = section.buffer; |
3019eac3 DE |
11123 | |
11124 | if (info_ptr == NULL) | |
33c5cd75 | 11125 | return; |
3019eac3 | 11126 | |
6f738b01 SM |
11127 | dwarf_read_debug_printf ("Reading %s for %s:", |
11128 | section.get_name (), | |
11129 | section.get_file_name ()); | |
3019eac3 | 11130 | |
33c5cd75 | 11131 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11132 | while (info_ptr < end_ptr) |
11133 | { | |
11134 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11135 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11136 | struct dwo_unit *dwo_unit; |
11137 | void **slot; | |
11138 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11139 | |
1859c670 | 11140 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11141 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11142 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11143 | per_cu.section = §ion; | |
11144 | ||
976ca316 | 11145 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11146 | if (!reader.dummy_p) |
11147 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11148 | &dwo_file, &read_unit); |
33c5cd75 DB |
11149 | info_ptr += per_cu.length; |
11150 | ||
11151 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11152 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11153 | continue; |
3019eac3 | 11154 | |
33c5cd75 | 11155 | if (cus_htab == NULL) |
298e9637 | 11156 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11157 | |
1859c670 | 11158 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11159 | struct dwo_unit); |
c0ab21c2 | 11160 | *dwo_unit = read_unit; |
b0b6a987 | 11161 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11162 | gdb_assert (slot != NULL); |
11163 | if (*slot != NULL) | |
19c3d4c9 | 11164 | { |
33c5cd75 DB |
11165 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11166 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11167 | |
b98664d3 | 11168 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11169 | " the entry at offset %s, signature %s"), |
11170 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11171 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11172 | } |
33c5cd75 | 11173 | *slot = (void *)dwo_unit; |
3019eac3 | 11174 | } |
3019eac3 DE |
11175 | } |
11176 | ||
80626a55 DE |
11177 | /* DWP file .debug_{cu,tu}_index section format: |
11178 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11179 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11180 | ||
11181 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11182 | officially standard DWP format was published with DWARF v5 and is called | |
11183 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11184 | |
d2415c6c DE |
11185 | DWP Version 1: |
11186 | ||
80626a55 DE |
11187 | Both index sections have the same format, and serve to map a 64-bit |
11188 | signature to a set of section numbers. Each section begins with a header, | |
11189 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11190 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11191 | aligned at 8-byte boundaries in the file. | |
11192 | ||
d2415c6c DE |
11193 | The index section header consists of: |
11194 | ||
11195 | V, 32 bit version number | |
11196 | -, 32 bits unused | |
11197 | N, 32 bit number of compilation units or type units in the index | |
11198 | M, 32 bit number of slots in the hash table | |
80626a55 | 11199 | |
d2415c6c | 11200 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11201 | |
d2415c6c DE |
11202 | The hash table begins at offset 16 in the section, and consists of an array |
11203 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11204 | order of the application binary). Unused slots in the hash table are 0. | |
11205 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11206 | |
d2415c6c DE |
11207 | The parallel table begins immediately after the hash table |
11208 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11209 | array of 32-bit indexes (using the byte order of the application binary), | |
11210 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11211 | table contains a 32-bit index into the pool of section numbers. For unused | |
11212 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11213 | |
73869dc2 DE |
11214 | The pool of section numbers begins immediately following the hash table |
11215 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11216 | section numbers consists of an array of 32-bit words (using the byte order | |
11217 | of the application binary). Each item in the array is indexed starting | |
11218 | from 0. The hash table entry provides the index of the first section | |
11219 | number in the set. Additional section numbers in the set follow, and the | |
11220 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11221 | ||
11222 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11223 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11224 | be the second entry. Other members of the set may follow in any order. | |
11225 | ||
11226 | --- | |
11227 | ||
d2854d8d | 11228 | DWP Versions 2 and 5: |
73869dc2 | 11229 | |
d2854d8d | 11230 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11231 | and the entries in the index tables are now offsets into these sections. |
11232 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11233 | section. | |
11234 | ||
11235 | Index Section Contents: | |
11236 | Header | |
11237 | Hash Table of Signatures dwp_hash_table.hash_table | |
11238 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11239 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11240 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11241 | |
11242 | The index section header consists of: | |
11243 | ||
11244 | V, 32 bit version number | |
11245 | L, 32 bit number of columns in the table of section offsets | |
11246 | N, 32 bit number of compilation units or type units in the index | |
11247 | M, 32 bit number of slots in the hash table | |
11248 | ||
11249 | Numbers are recorded using the byte order of the application binary. | |
11250 | ||
11251 | The hash table has the same format as version 1. | |
11252 | The parallel table of indices has the same format as version 1, | |
11253 | except that the entries are origin-1 indices into the table of sections | |
11254 | offsets and the table of section sizes. | |
11255 | ||
11256 | The table of offsets begins immediately following the parallel table | |
11257 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11258 | a two-dimensional array of 32-bit words (using the byte order of the | |
11259 | application binary), with L columns and N+1 rows, in row-major order. | |
11260 | Each row in the array is indexed starting from 0. The first row provides | |
11261 | a key to the remaining rows: each column in this row provides an identifier | |
11262 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11263 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11264 | |
11265 | DW_SECT_INFO 1 .debug_info.dwo | |
11266 | DW_SECT_TYPES 2 .debug_types.dwo | |
11267 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11268 | DW_SECT_LINE 4 .debug_line.dwo | |
11269 | DW_SECT_LOC 5 .debug_loc.dwo | |
11270 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11271 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11272 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11273 | ||
d2854d8d CT |
11274 | The section identifiers for Version 5 are: |
11275 | ||
11276 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11277 | DW_SECT_RESERVED_V5 2 -- | |
11278 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11279 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11280 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11281 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11282 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11283 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11284 | ||
73869dc2 DE |
11285 | The offsets provided by the CU and TU index sections are the base offsets |
11286 | for the contributions made by each CU or TU to the corresponding section | |
11287 | in the package file. Each CU and TU header contains an abbrev_offset | |
11288 | field, used to find the abbreviations table for that CU or TU within the | |
11289 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11290 | be interpreted as relative to the base offset given in the index section. | |
11291 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11292 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11293 | and offsets into other debug sections obtained from DWARF attributes should | |
11294 | also be interpreted as relative to the corresponding base offset. | |
11295 | ||
11296 | The table of sizes begins immediately following the table of offsets. | |
11297 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11298 | with L columns and N rows, in row-major order. Each row in the array is | |
11299 | indexed starting from 1 (row 0 is shared by the two tables). | |
11300 | ||
11301 | --- | |
11302 | ||
11303 | Hash table lookup is handled the same in version 1 and 2: | |
11304 | ||
11305 | We assume that N and M will not exceed 2^32 - 1. | |
11306 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11307 | ||
d2415c6c DE |
11308 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11309 | in the hash table is located as follows: | |
80626a55 | 11310 | |
d2415c6c DE |
11311 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11312 | the low-order k bits all set to 1. | |
80626a55 | 11313 | |
d2415c6c | 11314 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11315 | |
d2415c6c DE |
11316 | 3) If the hash table entry at index H matches the signature, use that |
11317 | entry. If the hash table entry at index H is unused (all zeroes), | |
11318 | terminate the search: the signature is not present in the table. | |
80626a55 | 11319 | |
d2415c6c | 11320 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11321 | |
d2415c6c | 11322 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11323 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11324 | |
11325 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11326 | .debug_{info,types}.dwo in DWP_FILE. | |
11327 | Returns NULL if there isn't one. | |
11328 | Note: This function processes DWP files only, not DWO files. */ | |
11329 | ||
11330 | static struct dwp_hash_table * | |
976ca316 | 11331 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11332 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11333 | { |
976ca316 | 11334 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11335 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11336 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11337 | struct dwarf2_section_info *index; |
73869dc2 | 11338 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11339 | struct dwp_hash_table *htab; |
11340 | ||
11341 | if (is_debug_types) | |
11342 | index = &dwp_file->sections.tu_index; | |
11343 | else | |
11344 | index = &dwp_file->sections.cu_index; | |
11345 | ||
96b79293 | 11346 | if (index->empty ()) |
80626a55 | 11347 | return NULL; |
96b79293 | 11348 | index->read (objfile); |
80626a55 DE |
11349 | |
11350 | index_ptr = index->buffer; | |
11351 | index_end = index_ptr + index->size; | |
11352 | ||
d2854d8d CT |
11353 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11354 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11355 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11356 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11357 | index_ptr += 4; |
d2854d8d | 11358 | if (version == 2 || version == 5) |
73869dc2 DE |
11359 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11360 | else | |
11361 | nr_columns = 0; | |
11362 | index_ptr += 4; | |
80626a55 DE |
11363 | nr_units = read_4_bytes (dbfd, index_ptr); |
11364 | index_ptr += 4; | |
11365 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11366 | index_ptr += 4; | |
11367 | ||
d2854d8d | 11368 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11369 | { |
21aa081e | 11370 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11371 | " [in module %s]"), |
21aa081e | 11372 | pulongest (version), dwp_file->name); |
80626a55 DE |
11373 | } |
11374 | if (nr_slots != (nr_slots & -nr_slots)) | |
11375 | { | |
21aa081e | 11376 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11377 | " is not power of 2 [in module %s]"), |
21aa081e | 11378 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11379 | } |
11380 | ||
976ca316 | 11381 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11382 | htab->version = version; |
11383 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11384 | htab->nr_units = nr_units; |
11385 | htab->nr_slots = nr_slots; | |
11386 | htab->hash_table = index_ptr; | |
11387 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11388 | |
11389 | /* Exit early if the table is empty. */ | |
11390 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11391 | || (version == 2 && nr_columns == 0) |
11392 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11393 | { |
11394 | /* All must be zero. */ | |
11395 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11396 | || (version == 2 && nr_columns != 0) |
11397 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11398 | { |
b98664d3 | 11399 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11400 | " all zero [in modules %s]"), |
11401 | dwp_file->name); | |
11402 | } | |
11403 | return htab; | |
11404 | } | |
11405 | ||
11406 | if (version == 1) | |
11407 | { | |
11408 | htab->section_pool.v1.indices = | |
11409 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11410 | /* It's harder to decide whether the section is too small in v1. | |
11411 | V1 is deprecated anyway so we punt. */ | |
11412 | } | |
d2854d8d | 11413 | else if (version == 2) |
73869dc2 DE |
11414 | { |
11415 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11416 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11417 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11418 | /* Reverse map for error checking. */ |
11419 | int ids_seen[DW_SECT_MAX + 1]; | |
11420 | int i; | |
11421 | ||
11422 | if (nr_columns < 2) | |
11423 | { | |
11424 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11425 | " in section table [in module %s]"), | |
11426 | dwp_file->name); | |
11427 | } | |
11428 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11429 | { | |
11430 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11431 | " in section table [in module %s]"), | |
11432 | dwp_file->name); | |
11433 | } | |
04fd5eed GB |
11434 | memset (ids, 255, sizeof_ids); |
11435 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11436 | for (i = 0; i < nr_columns; ++i) |
11437 | { | |
11438 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11439 | ||
11440 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11441 | { | |
11442 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11443 | " in section table [in module %s]"), | |
11444 | id, dwp_file->name); | |
11445 | } | |
11446 | if (ids_seen[id] != -1) | |
11447 | { | |
11448 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11449 | " id %d in section table [in module %s]"), | |
11450 | id, dwp_file->name); | |
11451 | } | |
11452 | ids_seen[id] = i; | |
11453 | ids[i] = id; | |
11454 | } | |
11455 | /* Must have exactly one info or types section. */ | |
11456 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11457 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11458 | != 1) | |
11459 | { | |
11460 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11461 | " DWO info/types section [in module %s]"), | |
11462 | dwp_file->name); | |
11463 | } | |
11464 | /* Must have an abbrev section. */ | |
11465 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11466 | { | |
11467 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11468 | " section [in module %s]"), | |
11469 | dwp_file->name); | |
11470 | } | |
11471 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11472 | htab->section_pool.v2.sizes = | |
11473 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11474 | * nr_units * nr_columns); | |
11475 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11476 | * nr_units * nr_columns)) | |
11477 | > index_end) | |
11478 | { | |
11479 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11480 | " [in module %s]"), | |
11481 | dwp_file->name); | |
11482 | } | |
11483 | } | |
d2854d8d CT |
11484 | else /* version == 5 */ |
11485 | { | |
11486 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11487 | int *ids = htab->section_pool.v5.section_ids; | |
11488 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11489 | /* Reverse map for error checking. */ | |
11490 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11491 | ||
11492 | if (nr_columns < 2) | |
11493 | { | |
11494 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11495 | " in section table [in module %s]"), | |
11496 | dwp_file->name); | |
11497 | } | |
11498 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11499 | { | |
11500 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11501 | " in section table [in module %s]"), | |
11502 | dwp_file->name); | |
11503 | } | |
11504 | memset (ids, 255, sizeof_ids); | |
11505 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11506 | for (int i = 0; i < nr_columns; ++i) | |
11507 | { | |
11508 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11509 | ||
11510 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11511 | { | |
11512 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11513 | " in section table [in module %s]"), | |
11514 | id, dwp_file->name); | |
11515 | } | |
11516 | if (ids_seen[id] != -1) | |
11517 | { | |
11518 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11519 | " id %d in section table [in module %s]"), | |
11520 | id, dwp_file->name); | |
11521 | } | |
11522 | ids_seen[id] = i; | |
11523 | ids[i] = id; | |
11524 | } | |
11525 | /* Must have seen an info section. */ | |
11526 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11527 | { | |
11528 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11529 | " DWO info/types section [in module %s]"), | |
11530 | dwp_file->name); | |
11531 | } | |
11532 | /* Must have an abbrev section. */ | |
11533 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11534 | { | |
11535 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11536 | " section [in module %s]"), | |
11537 | dwp_file->name); | |
11538 | } | |
11539 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11540 | htab->section_pool.v5.sizes | |
11541 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11542 | * nr_units * nr_columns); | |
11543 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11544 | * nr_units * nr_columns)) | |
11545 | > index_end) | |
11546 | { | |
11547 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11548 | " [in module %s]"), | |
11549 | dwp_file->name); | |
11550 | } | |
11551 | } | |
80626a55 DE |
11552 | |
11553 | return htab; | |
11554 | } | |
11555 | ||
11556 | /* Update SECTIONS with the data from SECTP. | |
11557 | ||
5bb6e9dd TT |
11558 | This function is like the other "locate" section routines, but in |
11559 | this context the sections to read comes from the DWP V1 hash table, | |
11560 | not the full ELF section table. | |
80626a55 DE |
11561 | |
11562 | The result is non-zero for success, or zero if an error was found. */ | |
11563 | ||
11564 | static int | |
73869dc2 DE |
11565 | locate_v1_virtual_dwo_sections (asection *sectp, |
11566 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11567 | { |
11568 | const struct dwop_section_names *names = &dwop_section_names; | |
11569 | ||
fbedd546 | 11570 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 DE |
11571 | { |
11572 | /* There can be only one. */ | |
049412e3 | 11573 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11574 | return 0; |
049412e3 | 11575 | sections->abbrev.s.section = sectp; |
fd361982 | 11576 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 11577 | } |
fbedd546 TT |
11578 | else if (names->info_dwo.matches (sectp->name) |
11579 | || names->types_dwo.matches (sectp->name)) | |
80626a55 DE |
11580 | { |
11581 | /* There can be only one. */ | |
049412e3 | 11582 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11583 | return 0; |
049412e3 | 11584 | sections->info_or_types.s.section = sectp; |
fd361982 | 11585 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 | 11586 | } |
fbedd546 | 11587 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 DE |
11588 | { |
11589 | /* There can be only one. */ | |
049412e3 | 11590 | if (sections->line.s.section != NULL) |
80626a55 | 11591 | return 0; |
049412e3 | 11592 | sections->line.s.section = sectp; |
fd361982 | 11593 | sections->line.size = bfd_section_size (sectp); |
80626a55 | 11594 | } |
fbedd546 | 11595 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 DE |
11596 | { |
11597 | /* There can be only one. */ | |
049412e3 | 11598 | if (sections->loc.s.section != NULL) |
80626a55 | 11599 | return 0; |
049412e3 | 11600 | sections->loc.s.section = sectp; |
fd361982 | 11601 | sections->loc.size = bfd_section_size (sectp); |
80626a55 | 11602 | } |
fbedd546 | 11603 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 DE |
11604 | { |
11605 | /* There can be only one. */ | |
049412e3 | 11606 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11607 | return 0; |
049412e3 | 11608 | sections->macinfo.s.section = sectp; |
fd361982 | 11609 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 11610 | } |
fbedd546 | 11611 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 DE |
11612 | { |
11613 | /* There can be only one. */ | |
049412e3 | 11614 | if (sections->macro.s.section != NULL) |
80626a55 | 11615 | return 0; |
049412e3 | 11616 | sections->macro.s.section = sectp; |
fd361982 | 11617 | sections->macro.size = bfd_section_size (sectp); |
80626a55 | 11618 | } |
fbedd546 | 11619 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 DE |
11620 | { |
11621 | /* There can be only one. */ | |
049412e3 | 11622 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11623 | return 0; |
049412e3 | 11624 | sections->str_offsets.s.section = sectp; |
fd361982 | 11625 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11626 | } |
11627 | else | |
11628 | { | |
11629 | /* No other kind of section is valid. */ | |
11630 | return 0; | |
11631 | } | |
11632 | ||
11633 | return 1; | |
11634 | } | |
11635 | ||
73869dc2 DE |
11636 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11637 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11638 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11639 | This is for DWP version 1 files. */ | |
80626a55 DE |
11640 | |
11641 | static struct dwo_unit * | |
976ca316 | 11642 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11643 | struct dwp_file *dwp_file, |
73869dc2 DE |
11644 | uint32_t unit_index, |
11645 | const char *comp_dir, | |
11646 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11647 | { |
73869dc2 DE |
11648 | const struct dwp_hash_table *dwp_htab = |
11649 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11650 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11651 | const char *kind = is_debug_types ? "TU" : "CU"; |
11652 | struct dwo_file *dwo_file; | |
11653 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11654 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11655 | void **dwo_file_slot; |
80626a55 DE |
11656 | int i; |
11657 | ||
73869dc2 DE |
11658 | gdb_assert (dwp_file->version == 1); |
11659 | ||
6f738b01 SM |
11660 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
11661 | kind, pulongest (unit_index), hex_string (signature), | |
11662 | dwp_file->name); | |
80626a55 | 11663 | |
19ac8c2e | 11664 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11665 | Put a limit on the number of sections we look for so that bad data |
11666 | doesn't cause us to loop forever. */ | |
11667 | ||
73869dc2 | 11668 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11669 | (1 /* .debug_info or .debug_types */ \ |
11670 | + 1 /* .debug_abbrev */ \ | |
11671 | + 1 /* .debug_line */ \ | |
11672 | + 1 /* .debug_loc */ \ | |
11673 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11674 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11675 | + 1 /* trailing zero */) |
11676 | ||
11677 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11678 | |
73869dc2 | 11679 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11680 | { |
11681 | asection *sectp; | |
11682 | uint32_t section_nr = | |
11683 | read_4_bytes (dbfd, | |
73869dc2 DE |
11684 | dwp_htab->section_pool.v1.indices |
11685 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11686 | |
11687 | if (section_nr == 0) | |
11688 | break; | |
11689 | if (section_nr >= dwp_file->num_sections) | |
11690 | { | |
11691 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11692 | " [in module %s]"), | |
11693 | dwp_file->name); | |
11694 | } | |
11695 | ||
11696 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11697 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11698 | { |
11699 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11700 | " [in module %s]"), | |
11701 | dwp_file->name); | |
11702 | } | |
11703 | } | |
11704 | ||
11705 | if (i < 2 | |
96b79293 TT |
11706 | || sections.info_or_types.empty () |
11707 | || sections.abbrev.empty ()) | |
80626a55 DE |
11708 | { |
11709 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11710 | " [in module %s]"), | |
11711 | dwp_file->name); | |
11712 | } | |
73869dc2 | 11713 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11714 | { |
11715 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11716 | " [in module %s]"), | |
11717 | dwp_file->name); | |
11718 | } | |
11719 | ||
11720 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11721 | have dwo_unit "live" in that. At least for now. | |
11722 | ||
11723 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11724 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11725 | file, we can combine them back into a virtual DWO file to save space |
11726 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11727 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11728 | ||
791afaa2 TT |
11729 | std::string virtual_dwo_name = |
11730 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11731 | sections.abbrev.get_id (), |
11732 | sections.line.get_id (), | |
11733 | sections.loc.get_id (), | |
11734 | sections.str_offsets.get_id ()); | |
80626a55 | 11735 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11736 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11737 | comp_dir); |
80626a55 DE |
11738 | /* Create one if necessary. */ |
11739 | if (*dwo_file_slot == NULL) | |
11740 | { | |
6f738b01 SM |
11741 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
11742 | virtual_dwo_name.c_str ()); | |
11743 | ||
51ac9db5 | 11744 | dwo_file = new struct dwo_file; |
976ca316 | 11745 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11746 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11747 | dwo_file->sections.abbrev = sections.abbrev; |
11748 | dwo_file->sections.line = sections.line; | |
11749 | dwo_file->sections.loc = sections.loc; | |
11750 | dwo_file->sections.macinfo = sections.macinfo; | |
11751 | dwo_file->sections.macro = sections.macro; | |
11752 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11753 | /* The "str" section is global to the entire DWP file. */ | |
11754 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11755 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11756 | there's no need to record it in dwo_file. |
11757 | Also, we can't simply record type sections in dwo_file because | |
11758 | we record a pointer into the vector in dwo_unit. As we collect more | |
11759 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11760 | for it, invalidating all copies of pointers into the previous |
11761 | contents. */ | |
80626a55 DE |
11762 | *dwo_file_slot = dwo_file; |
11763 | } | |
11764 | else | |
11765 | { | |
6f738b01 SM |
11766 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
11767 | virtual_dwo_name.c_str ()); | |
11768 | ||
9a3c8263 | 11769 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11770 | } |
80626a55 | 11771 | |
976ca316 | 11772 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11773 | dwo_unit->dwo_file = dwo_file; |
11774 | dwo_unit->signature = signature; | |
8d749320 | 11775 | dwo_unit->section = |
976ca316 | 11776 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11777 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11778 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11779 | |
11780 | return dwo_unit; | |
11781 | } | |
11782 | ||
d2854d8d CT |
11783 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
11784 | simplify them. Given a pointer to the containing section SECTION, and | |
11785 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
11786 | virtual section of just that piece. */ | |
73869dc2 DE |
11787 | |
11788 | static struct dwarf2_section_info | |
d2854d8d CT |
11789 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
11790 | struct dwarf2_section_info *section, | |
11791 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
11792 | { |
11793 | struct dwarf2_section_info result; | |
11794 | asection *sectp; | |
11795 | ||
11796 | gdb_assert (section != NULL); | |
11797 | gdb_assert (!section->is_virtual); | |
11798 | ||
11799 | memset (&result, 0, sizeof (result)); | |
11800 | result.s.containing_section = section; | |
dc4ccb6f | 11801 | result.is_virtual = true; |
73869dc2 DE |
11802 | |
11803 | if (size == 0) | |
11804 | return result; | |
11805 | ||
96b79293 | 11806 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11807 | |
11808 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11809 | bounds of the real section. This is a pretty-rare event, so just | |
11810 | flag an error (easier) instead of a warning and trying to cope. */ | |
11811 | if (sectp == NULL | |
fd361982 | 11812 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11813 | { |
d2854d8d | 11814 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 11815 | " in section %s [in module %s]"), |
fd361982 | 11816 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 11817 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
11818 | } |
11819 | ||
11820 | result.virtual_offset = offset; | |
11821 | result.size = size; | |
11822 | return result; | |
11823 | } | |
11824 | ||
11825 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11826 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11827 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11828 | This is for DWP version 2 files. */ | |
11829 | ||
11830 | static struct dwo_unit * | |
976ca316 | 11831 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11832 | struct dwp_file *dwp_file, |
73869dc2 DE |
11833 | uint32_t unit_index, |
11834 | const char *comp_dir, | |
11835 | ULONGEST signature, int is_debug_types) | |
11836 | { | |
73869dc2 DE |
11837 | const struct dwp_hash_table *dwp_htab = |
11838 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11839 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11840 | const char *kind = is_debug_types ? "TU" : "CU"; |
11841 | struct dwo_file *dwo_file; | |
11842 | struct dwo_unit *dwo_unit; | |
d2854d8d | 11843 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 11844 | void **dwo_file_slot; |
73869dc2 DE |
11845 | int i; |
11846 | ||
11847 | gdb_assert (dwp_file->version == 2); | |
11848 | ||
6f738b01 SM |
11849 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
11850 | kind, pulongest (unit_index), hex_string (signature), | |
11851 | dwp_file->name); | |
73869dc2 DE |
11852 | |
11853 | /* Fetch the section offsets of this DWO unit. */ | |
11854 | ||
11855 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11856 | |
11857 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11858 | { | |
11859 | uint32_t offset = read_4_bytes (dbfd, | |
11860 | dwp_htab->section_pool.v2.offsets | |
11861 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11862 | + i) | |
11863 | * sizeof (uint32_t))); | |
11864 | uint32_t size = read_4_bytes (dbfd, | |
11865 | dwp_htab->section_pool.v2.sizes | |
11866 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11867 | + i) | |
11868 | * sizeof (uint32_t))); | |
11869 | ||
11870 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11871 | { | |
11872 | case DW_SECT_INFO: | |
11873 | case DW_SECT_TYPES: | |
11874 | sections.info_or_types_offset = offset; | |
11875 | sections.info_or_types_size = size; | |
11876 | break; | |
11877 | case DW_SECT_ABBREV: | |
11878 | sections.abbrev_offset = offset; | |
11879 | sections.abbrev_size = size; | |
11880 | break; | |
11881 | case DW_SECT_LINE: | |
11882 | sections.line_offset = offset; | |
11883 | sections.line_size = size; | |
11884 | break; | |
11885 | case DW_SECT_LOC: | |
11886 | sections.loc_offset = offset; | |
11887 | sections.loc_size = size; | |
11888 | break; | |
11889 | case DW_SECT_STR_OFFSETS: | |
11890 | sections.str_offsets_offset = offset; | |
11891 | sections.str_offsets_size = size; | |
11892 | break; | |
11893 | case DW_SECT_MACINFO: | |
11894 | sections.macinfo_offset = offset; | |
11895 | sections.macinfo_size = size; | |
11896 | break; | |
11897 | case DW_SECT_MACRO: | |
11898 | sections.macro_offset = offset; | |
11899 | sections.macro_size = size; | |
11900 | break; | |
11901 | } | |
11902 | } | |
11903 | ||
11904 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11905 | have dwo_unit "live" in that. At least for now. | |
11906 | ||
11907 | The DWP file can be made up of a random collection of CUs and TUs. | |
11908 | However, for each CU + set of TUs that came from the same original DWO | |
11909 | file, we can combine them back into a virtual DWO file to save space | |
11910 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11911 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11912 | ||
791afaa2 TT |
11913 | std::string virtual_dwo_name = |
11914 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11915 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11916 | (long) (sections.line_size ? sections.line_offset : 0), | |
11917 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11918 | (long) (sections.str_offsets_size | |
11919 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11920 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11921 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11922 | comp_dir); |
73869dc2 DE |
11923 | /* Create one if necessary. */ |
11924 | if (*dwo_file_slot == NULL) | |
11925 | { | |
6f738b01 SM |
11926 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
11927 | virtual_dwo_name.c_str ()); | |
11928 | ||
51ac9db5 | 11929 | dwo_file = new struct dwo_file; |
976ca316 | 11930 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11931 | dwo_file->comp_dir = comp_dir; |
11932 | dwo_file->sections.abbrev = | |
d2854d8d CT |
11933 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
11934 | sections.abbrev_offset, | |
11935 | sections.abbrev_size); | |
73869dc2 | 11936 | dwo_file->sections.line = |
d2854d8d CT |
11937 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
11938 | sections.line_offset, | |
11939 | sections.line_size); | |
73869dc2 | 11940 | dwo_file->sections.loc = |
d2854d8d CT |
11941 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
11942 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 11943 | dwo_file->sections.macinfo = |
d2854d8d CT |
11944 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
11945 | sections.macinfo_offset, | |
11946 | sections.macinfo_size); | |
73869dc2 | 11947 | dwo_file->sections.macro = |
d2854d8d CT |
11948 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
11949 | sections.macro_offset, | |
11950 | sections.macro_size); | |
73869dc2 | 11951 | dwo_file->sections.str_offsets = |
d2854d8d CT |
11952 | create_dwp_v2_or_v5_section (per_objfile, |
11953 | &dwp_file->sections.str_offsets, | |
11954 | sections.str_offsets_offset, | |
11955 | sections.str_offsets_size); | |
73869dc2 DE |
11956 | /* The "str" section is global to the entire DWP file. */ |
11957 | dwo_file->sections.str = dwp_file->sections.str; | |
11958 | /* The info or types section is assigned below to dwo_unit, | |
11959 | there's no need to record it in dwo_file. | |
11960 | Also, we can't simply record type sections in dwo_file because | |
11961 | we record a pointer into the vector in dwo_unit. As we collect more | |
11962 | types we'll grow the vector and eventually have to reallocate space | |
11963 | for it, invalidating all copies of pointers into the previous | |
11964 | contents. */ | |
11965 | *dwo_file_slot = dwo_file; | |
11966 | } | |
11967 | else | |
11968 | { | |
6f738b01 SM |
11969 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
11970 | virtual_dwo_name.c_str ()); | |
11971 | ||
9a3c8263 | 11972 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11973 | } |
73869dc2 | 11974 | |
976ca316 | 11975 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
11976 | dwo_unit->dwo_file = dwo_file; |
11977 | dwo_unit->signature = signature; | |
8d749320 | 11978 | dwo_unit->section = |
976ca316 | 11979 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 11980 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 11981 | (per_objfile, |
d2854d8d CT |
11982 | is_debug_types |
11983 | ? &dwp_file->sections.types | |
11984 | : &dwp_file->sections.info, | |
11985 | sections.info_or_types_offset, | |
11986 | sections.info_or_types_size); | |
11987 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11988 | ||
11989 | return dwo_unit; | |
11990 | } | |
11991 | ||
11992 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11993 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11994 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11995 | This is for DWP version 5 files. */ | |
11996 | ||
11997 | static struct dwo_unit * | |
11998 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
11999 | struct dwp_file *dwp_file, | |
12000 | uint32_t unit_index, | |
12001 | const char *comp_dir, | |
12002 | ULONGEST signature, int is_debug_types) | |
12003 | { | |
12004 | const struct dwp_hash_table *dwp_htab | |
12005 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12006 | bfd *dbfd = dwp_file->dbfd.get (); | |
12007 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12008 | struct dwo_file *dwo_file; | |
12009 | struct dwo_unit *dwo_unit; | |
12010 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12011 | void **dwo_file_slot; | |
12012 | ||
12013 | gdb_assert (dwp_file->version == 5); | |
12014 | ||
6f738b01 SM |
12015 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12016 | kind, pulongest (unit_index), hex_string (signature), | |
12017 | dwp_file->name); | |
d2854d8d CT |
12018 | |
12019 | /* Fetch the section offsets of this DWO unit. */ | |
12020 | ||
12021 | /* memset (§ions, 0, sizeof (sections)); */ | |
12022 | ||
12023 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12024 | { | |
12025 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12026 | dwp_htab->section_pool.v5.offsets |
12027 | + (((unit_index - 1) | |
12028 | * dwp_htab->nr_columns | |
12029 | + i) | |
12030 | * sizeof (uint32_t))); | |
d2854d8d | 12031 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12032 | dwp_htab->section_pool.v5.sizes |
12033 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12034 | + i) | |
12035 | * sizeof (uint32_t))); | |
d2854d8d CT |
12036 | |
12037 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12038 | { |
12039 | case DW_SECT_ABBREV_V5: | |
12040 | sections.abbrev_offset = offset; | |
12041 | sections.abbrev_size = size; | |
12042 | break; | |
12043 | case DW_SECT_INFO_V5: | |
12044 | sections.info_or_types_offset = offset; | |
12045 | sections.info_or_types_size = size; | |
12046 | break; | |
12047 | case DW_SECT_LINE_V5: | |
12048 | sections.line_offset = offset; | |
12049 | sections.line_size = size; | |
12050 | break; | |
12051 | case DW_SECT_LOCLISTS_V5: | |
12052 | sections.loclists_offset = offset; | |
12053 | sections.loclists_size = size; | |
12054 | break; | |
12055 | case DW_SECT_MACRO_V5: | |
12056 | sections.macro_offset = offset; | |
12057 | sections.macro_size = size; | |
12058 | break; | |
12059 | case DW_SECT_RNGLISTS_V5: | |
12060 | sections.rnglists_offset = offset; | |
12061 | sections.rnglists_size = size; | |
12062 | break; | |
12063 | case DW_SECT_STR_OFFSETS_V5: | |
12064 | sections.str_offsets_offset = offset; | |
12065 | sections.str_offsets_size = size; | |
12066 | break; | |
12067 | case DW_SECT_RESERVED_V5: | |
12068 | default: | |
12069 | break; | |
12070 | } | |
d2854d8d CT |
12071 | } |
12072 | ||
12073 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12074 | have dwo_unit "live" in that. At least for now. | |
12075 | ||
12076 | The DWP file can be made up of a random collection of CUs and TUs. | |
12077 | However, for each CU + set of TUs that came from the same original DWO | |
12078 | file, we can combine them back into a virtual DWO file to save space | |
12079 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12080 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12081 | ||
12082 | std::string virtual_dwo_name = | |
12083 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12084 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12085 | (long) (sections.line_size ? sections.line_offset : 0), | |
12086 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12087 | (long) (sections.str_offsets_size | |
12088 | ? sections.str_offsets_offset : 0), | |
12089 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12090 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12091 | /* Can we use an existing virtual DWO file? */ |
12092 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12093 | virtual_dwo_name.c_str (), |
12094 | comp_dir); | |
d2854d8d CT |
12095 | /* Create one if necessary. */ |
12096 | if (*dwo_file_slot == NULL) | |
12097 | { | |
6f738b01 SM |
12098 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12099 | virtual_dwo_name.c_str ()); | |
12100 | ||
d2854d8d CT |
12101 | dwo_file = new struct dwo_file; |
12102 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12103 | dwo_file->comp_dir = comp_dir; | |
12104 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12105 | create_dwp_v2_or_v5_section (per_objfile, |
12106 | &dwp_file->sections.abbrev, | |
12107 | sections.abbrev_offset, | |
12108 | sections.abbrev_size); | |
d2854d8d | 12109 | dwo_file->sections.line = |
dda83cd7 SM |
12110 | create_dwp_v2_or_v5_section (per_objfile, |
12111 | &dwp_file->sections.line, | |
12112 | sections.line_offset, sections.line_size); | |
d2854d8d | 12113 | dwo_file->sections.macro = |
dda83cd7 SM |
12114 | create_dwp_v2_or_v5_section (per_objfile, |
12115 | &dwp_file->sections.macro, | |
12116 | sections.macro_offset, | |
12117 | sections.macro_size); | |
d2854d8d | 12118 | dwo_file->sections.loclists = |
dda83cd7 SM |
12119 | create_dwp_v2_or_v5_section (per_objfile, |
12120 | &dwp_file->sections.loclists, | |
12121 | sections.loclists_offset, | |
12122 | sections.loclists_size); | |
d2854d8d | 12123 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12124 | create_dwp_v2_or_v5_section (per_objfile, |
12125 | &dwp_file->sections.rnglists, | |
12126 | sections.rnglists_offset, | |
12127 | sections.rnglists_size); | |
d2854d8d | 12128 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12129 | create_dwp_v2_or_v5_section (per_objfile, |
12130 | &dwp_file->sections.str_offsets, | |
12131 | sections.str_offsets_offset, | |
12132 | sections.str_offsets_size); | |
d2854d8d CT |
12133 | /* The "str" section is global to the entire DWP file. */ |
12134 | dwo_file->sections.str = dwp_file->sections.str; | |
12135 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12136 | there's no need to record it in dwo_file. |
12137 | Also, we can't simply record type sections in dwo_file because | |
12138 | we record a pointer into the vector in dwo_unit. As we collect more | |
12139 | types we'll grow the vector and eventually have to reallocate space | |
12140 | for it, invalidating all copies of pointers into the previous | |
12141 | contents. */ | |
d2854d8d CT |
12142 | *dwo_file_slot = dwo_file; |
12143 | } | |
12144 | else | |
12145 | { | |
6f738b01 SM |
12146 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12147 | virtual_dwo_name.c_str ()); | |
12148 | ||
d2854d8d CT |
12149 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12150 | } | |
12151 | ||
12152 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12153 | dwo_unit->dwo_file = dwo_file; | |
12154 | dwo_unit->signature = signature; | |
12155 | dwo_unit->section | |
12156 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12157 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12158 | &dwp_file->sections.info, |
12159 | sections.info_or_types_offset, | |
12160 | sections.info_or_types_size); | |
73869dc2 DE |
12161 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12162 | ||
12163 | return dwo_unit; | |
12164 | } | |
12165 | ||
57d63ce2 DE |
12166 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12167 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12168 | |
12169 | static struct dwo_unit * | |
976ca316 | 12170 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12171 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12172 | ULONGEST signature, int is_debug_types) |
80626a55 | 12173 | { |
57d63ce2 DE |
12174 | const struct dwp_hash_table *dwp_htab = |
12175 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12176 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12177 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12178 | uint32_t hash = signature & mask; |
12179 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12180 | unsigned int i; | |
12181 | void **slot; | |
870f88f7 | 12182 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12183 | |
12184 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12185 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12186 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12187 | ? dwp_file->loaded_tus.get () |
12188 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12189 | &find_dwo_cu, INSERT); |
80626a55 DE |
12190 | |
12191 | if (*slot != NULL) | |
9a3c8263 | 12192 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12193 | |
12194 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12195 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12196 | { |
12197 | ULONGEST signature_in_table; | |
12198 | ||
12199 | signature_in_table = | |
57d63ce2 | 12200 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12201 | if (signature_in_table == signature) |
12202 | { | |
57d63ce2 DE |
12203 | uint32_t unit_index = |
12204 | read_4_bytes (dbfd, | |
12205 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12206 | |
73869dc2 DE |
12207 | if (dwp_file->version == 1) |
12208 | { | |
976ca316 SM |
12209 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12210 | unit_index, comp_dir, | |
12211 | signature, is_debug_types); | |
73869dc2 | 12212 | } |
d2854d8d | 12213 | else if (dwp_file->version == 2) |
73869dc2 | 12214 | { |
976ca316 SM |
12215 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12216 | unit_index, comp_dir, | |
12217 | signature, is_debug_types); | |
73869dc2 | 12218 | } |
d2854d8d CT |
12219 | else /* version == 5 */ |
12220 | { | |
12221 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12222 | unit_index, comp_dir, | |
12223 | signature, is_debug_types); | |
12224 | } | |
9a3c8263 | 12225 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12226 | } |
12227 | if (signature_in_table == 0) | |
12228 | return NULL; | |
12229 | hash = (hash + hash2) & mask; | |
12230 | } | |
12231 | ||
12232 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12233 | " [in module %s]"), | |
12234 | dwp_file->name); | |
12235 | } | |
12236 | ||
ab5088bf | 12237 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12238 | Open the file specified by FILE_NAME and hand it off to BFD for |
12239 | preliminary analysis. Return a newly initialized bfd *, which | |
12240 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12241 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12242 | SEARCH_CWD is true if the current directory is to be searched. |
12243 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12244 | If successful, the file is added to the bfd include table of the |
12245 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12246 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12247 | NOTE: This function is derived from symfile_bfd_open. */ |
12248 | ||
192b62ce | 12249 | static gdb_bfd_ref_ptr |
976ca316 | 12250 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12251 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12252 | { |
24b9144d | 12253 | int desc; |
9c02c129 DE |
12254 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12255 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12256 | to debug_file_directory. */ | |
e0cc99a6 | 12257 | const char *search_path; |
9c02c129 DE |
12258 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12259 | ||
e0cc99a6 | 12260 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12261 | if (search_cwd) |
12262 | { | |
12263 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12264 | { |
12265 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12266 | debug_file_directory, | |
12267 | (char *) NULL)); | |
12268 | search_path = search_path_holder.get (); | |
12269 | } | |
6ac97d4c | 12270 | else |
e0cc99a6 | 12271 | search_path = "."; |
6ac97d4c | 12272 | } |
9c02c129 | 12273 | else |
e0cc99a6 | 12274 | search_path = debug_file_directory; |
3019eac3 | 12275 | |
56d467f4 CT |
12276 | /* Add the path for the executable binary to the list of search paths. */ |
12277 | std::string objfile_dir = ldirname (objfile_name (per_objfile->objfile)); | |
12278 | search_path_holder.reset (concat (objfile_dir.c_str (), | |
12279 | dirname_separator_string, | |
12280 | search_path, nullptr)); | |
12281 | search_path = search_path_holder.get (); | |
12282 | ||
24b9144d | 12283 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12284 | if (is_dwp) |
12285 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12286 | |
12287 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12288 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12289 | O_RDONLY | O_BINARY, &absolute_name); |
12290 | if (desc < 0) | |
12291 | return NULL; | |
12292 | ||
e0cc99a6 TT |
12293 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12294 | gnutarget, desc)); | |
9c02c129 DE |
12295 | if (sym_bfd == NULL) |
12296 | return NULL; | |
192b62ce | 12297 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12298 | |
192b62ce TT |
12299 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12300 | return NULL; | |
3019eac3 | 12301 | |
13aaf454 DE |
12302 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12303 | This is important because things like demangled_names_hash lives in the | |
12304 | objfile's per_bfd space and may have references to things like symbol | |
12305 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12306 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12307 | |
3019eac3 DE |
12308 | return sym_bfd; |
12309 | } | |
12310 | ||
ab5088bf | 12311 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12312 | COMP_DIR is the DW_AT_comp_dir attribute. |
12313 | The result is the bfd handle of the file. | |
12314 | If there is a problem finding or opening the file, return NULL. | |
12315 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12316 | same as symfile_bfd_open. */ | |
12317 | ||
192b62ce | 12318 | static gdb_bfd_ref_ptr |
976ca316 | 12319 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12320 | const char *file_name, const char *comp_dir) |
3019eac3 | 12321 | { |
80626a55 | 12322 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12323 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12324 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12325 | |
12326 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12327 | ||
12328 | if (comp_dir != NULL) | |
12329 | { | |
43816ebc TT |
12330 | gdb::unique_xmalloc_ptr<char> path_to_try |
12331 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12332 | |
12333 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12334 | search path, which seems useful. */ | |
976ca316 | 12335 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12336 | 0 /*is_dwp*/, |
192b62ce | 12337 | 1 /*search_cwd*/)); |
3019eac3 DE |
12338 | if (abfd != NULL) |
12339 | return abfd; | |
12340 | } | |
12341 | ||
12342 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12343 | is a list of paths. */ | |
12344 | ||
12345 | if (*debug_file_directory == '\0') | |
12346 | return NULL; | |
12347 | ||
976ca316 | 12348 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12349 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12350 | } |
12351 | ||
80626a55 DE |
12352 | /* This function is mapped across the sections and remembers the offset and |
12353 | size of each of the DWO debugging sections we are interested in. */ | |
12354 | ||
12355 | static void | |
5bb6e9dd TT |
12356 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12357 | dwo_sections *dwo_sections) | |
80626a55 | 12358 | { |
80626a55 DE |
12359 | const struct dwop_section_names *names = &dwop_section_names; |
12360 | ||
fbedd546 | 12361 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 | 12362 | { |
049412e3 | 12363 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12364 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12365 | } |
fbedd546 | 12366 | else if (names->info_dwo.matches (sectp->name)) |
80626a55 | 12367 | { |
049412e3 | 12368 | dwo_sections->info.s.section = sectp; |
fd361982 | 12369 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 | 12370 | } |
fbedd546 | 12371 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 | 12372 | { |
049412e3 | 12373 | dwo_sections->line.s.section = sectp; |
fd361982 | 12374 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 | 12375 | } |
fbedd546 | 12376 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 | 12377 | { |
049412e3 | 12378 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12379 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12380 | } |
fbedd546 | 12381 | else if (names->loclists_dwo.matches (sectp->name)) |
41144253 | 12382 | { |
12383 | dwo_sections->loclists.s.section = sectp; | |
12384 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12385 | } | |
fbedd546 | 12386 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 | 12387 | { |
049412e3 | 12388 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12389 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12390 | } |
fbedd546 | 12391 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 | 12392 | { |
049412e3 | 12393 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12394 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12395 | } |
fbedd546 | 12396 | else if (names->rnglists_dwo.matches (sectp->name)) |
d0ce17d8 CT |
12397 | { |
12398 | dwo_sections->rnglists.s.section = sectp; | |
12399 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12400 | } | |
fbedd546 | 12401 | else if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12402 | { |
049412e3 | 12403 | dwo_sections->str.s.section = sectp; |
fd361982 | 12404 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 | 12405 | } |
fbedd546 | 12406 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 | 12407 | { |
049412e3 | 12408 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12409 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 | 12410 | } |
fbedd546 | 12411 | else if (names->types_dwo.matches (sectp->name)) |
80626a55 DE |
12412 | { |
12413 | struct dwarf2_section_info type_section; | |
12414 | ||
12415 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12416 | type_section.s.section = sectp; |
fd361982 | 12417 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12418 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12419 | } |
12420 | } | |
12421 | ||
ab5088bf | 12422 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12423 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12424 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12425 | |
12426 | static struct dwo_file * | |
4ab09049 SM |
12427 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12428 | const char *comp_dir) | |
3019eac3 | 12429 | { |
976ca316 | 12430 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12431 | |
976ca316 | 12432 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12433 | if (dbfd == NULL) |
12434 | { | |
6f738b01 SM |
12435 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12436 | ||
80626a55 DE |
12437 | return NULL; |
12438 | } | |
263db9a1 | 12439 | |
51ac9db5 | 12440 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12441 | dwo_file->dwo_name = dwo_name; |
12442 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12443 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12444 | |
5bb6e9dd TT |
12445 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12446 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12447 | &dwo_file->sections); | |
3019eac3 | 12448 | |
976ca316 SM |
12449 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12450 | dwo_file->cus); | |
3019eac3 | 12451 | |
d2854d8d CT |
12452 | if (cu->per_cu->dwarf_version < 5) |
12453 | { | |
12454 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12455 | dwo_file->sections.types, dwo_file->tus); | |
12456 | } | |
12457 | else | |
12458 | { | |
12459 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12460 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12461 | rcuh_kind::COMPILE); |
d2854d8d | 12462 | } |
3019eac3 | 12463 | |
6f738b01 | 12464 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12465 | |
263db9a1 | 12466 | return dwo_file.release (); |
3019eac3 DE |
12467 | } |
12468 | ||
80626a55 | 12469 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12470 | size of each of the DWP debugging sections common to version 1 and 2 that |
12471 | we are interested in. */ | |
3019eac3 | 12472 | |
80626a55 | 12473 | static void |
73869dc2 | 12474 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12475 | dwp_file *dwp_file) |
3019eac3 | 12476 | { |
80626a55 DE |
12477 | const struct dwop_section_names *names = &dwop_section_names; |
12478 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12479 | |
80626a55 | 12480 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12481 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12482 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12483 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12484 | |
80626a55 | 12485 | /* Look for specific sections that we need. */ |
fbedd546 | 12486 | if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12487 | { |
049412e3 | 12488 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12489 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 | 12490 | } |
fbedd546 | 12491 | else if (names->cu_index.matches (sectp->name)) |
80626a55 | 12492 | { |
049412e3 | 12493 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12494 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 | 12495 | } |
fbedd546 | 12496 | else if (names->tu_index.matches (sectp->name)) |
80626a55 | 12497 | { |
049412e3 | 12498 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12499 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12500 | } |
12501 | } | |
3019eac3 | 12502 | |
73869dc2 DE |
12503 | /* This function is mapped across the sections and remembers the offset and |
12504 | size of each of the DWP version 2 debugging sections that we are interested | |
12505 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12506 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12507 | |
12508 | static void | |
12509 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12510 | { | |
9a3c8263 | 12511 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12512 | const struct dwop_section_names *names = &dwop_section_names; |
12513 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12514 | ||
12515 | /* Record the ELF section number for later lookup: this is what the | |
12516 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12517 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12518 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12519 | ||
12520 | /* Look for specific sections that we need. */ | |
fbedd546 | 12521 | if (names->abbrev_dwo.matches (sectp->name)) |
73869dc2 | 12522 | { |
049412e3 | 12523 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12524 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 | 12525 | } |
fbedd546 | 12526 | else if (names->info_dwo.matches (sectp->name)) |
73869dc2 | 12527 | { |
049412e3 | 12528 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12529 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 | 12530 | } |
fbedd546 | 12531 | else if (names->line_dwo.matches (sectp->name)) |
73869dc2 | 12532 | { |
049412e3 | 12533 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12534 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 | 12535 | } |
fbedd546 | 12536 | else if (names->loc_dwo.matches (sectp->name)) |
73869dc2 | 12537 | { |
049412e3 | 12538 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12539 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 | 12540 | } |
fbedd546 | 12541 | else if (names->macinfo_dwo.matches (sectp->name)) |
73869dc2 | 12542 | { |
049412e3 | 12543 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12544 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 | 12545 | } |
fbedd546 | 12546 | else if (names->macro_dwo.matches (sectp->name)) |
73869dc2 | 12547 | { |
049412e3 | 12548 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12549 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 | 12550 | } |
fbedd546 | 12551 | else if (names->str_offsets_dwo.matches (sectp->name)) |
73869dc2 | 12552 | { |
049412e3 | 12553 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12554 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 | 12555 | } |
fbedd546 | 12556 | else if (names->types_dwo.matches (sectp->name)) |
73869dc2 | 12557 | { |
049412e3 | 12558 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12559 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12560 | } |
12561 | } | |
12562 | ||
d2854d8d CT |
12563 | /* This function is mapped across the sections and remembers the offset and |
12564 | size of each of the DWP version 5 debugging sections that we are interested | |
12565 | in. This is split into a separate function because we don't know if we | |
12566 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12567 | ||
12568 | static void | |
12569 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12570 | { | |
12571 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12572 | const struct dwop_section_names *names = &dwop_section_names; | |
12573 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12574 | ||
12575 | /* Record the ELF section number for later lookup: this is what the | |
12576 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12577 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12578 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12579 | ||
12580 | /* Look for specific sections that we need. */ | |
fbedd546 | 12581 | if (names->abbrev_dwo.matches (sectp->name)) |
d2854d8d CT |
12582 | { |
12583 | dwp_file->sections.abbrev.s.section = sectp; | |
12584 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12585 | } | |
fbedd546 | 12586 | else if (names->info_dwo.matches (sectp->name)) |
d2854d8d CT |
12587 | { |
12588 | dwp_file->sections.info.s.section = sectp; | |
12589 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12590 | } | |
fbedd546 | 12591 | else if (names->line_dwo.matches (sectp->name)) |
d2854d8d CT |
12592 | { |
12593 | dwp_file->sections.line.s.section = sectp; | |
12594 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12595 | } | |
fbedd546 | 12596 | else if (names->loclists_dwo.matches (sectp->name)) |
d2854d8d CT |
12597 | { |
12598 | dwp_file->sections.loclists.s.section = sectp; | |
12599 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12600 | } | |
fbedd546 | 12601 | else if (names->macro_dwo.matches (sectp->name)) |
d2854d8d CT |
12602 | { |
12603 | dwp_file->sections.macro.s.section = sectp; | |
12604 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12605 | } | |
fbedd546 | 12606 | else if (names->rnglists_dwo.matches (sectp->name)) |
d2854d8d CT |
12607 | { |
12608 | dwp_file->sections.rnglists.s.section = sectp; | |
12609 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12610 | } | |
fbedd546 | 12611 | else if (names->str_offsets_dwo.matches (sectp->name)) |
d2854d8d CT |
12612 | { |
12613 | dwp_file->sections.str_offsets.s.section = sectp; | |
12614 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
12615 | } | |
12616 | } | |
12617 | ||
80626a55 | 12618 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12619 | |
80626a55 DE |
12620 | static hashval_t |
12621 | hash_dwp_loaded_cutus (const void *item) | |
12622 | { | |
9a3c8263 | 12623 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12624 | |
80626a55 DE |
12625 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12626 | return dwo_unit->signature; | |
3019eac3 DE |
12627 | } |
12628 | ||
80626a55 | 12629 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12630 | |
80626a55 DE |
12631 | static int |
12632 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12633 | { |
9a3c8263 SM |
12634 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12635 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12636 | |
80626a55 DE |
12637 | return dua->signature == dub->signature; |
12638 | } | |
3019eac3 | 12639 | |
80626a55 | 12640 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12641 | |
48b490f2 | 12642 | static htab_up |
298e9637 | 12643 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12644 | { |
48b490f2 TT |
12645 | return htab_up (htab_create_alloc (3, |
12646 | hash_dwp_loaded_cutus, | |
12647 | eq_dwp_loaded_cutus, | |
12648 | NULL, xcalloc, xfree)); | |
80626a55 | 12649 | } |
3019eac3 | 12650 | |
ab5088bf DE |
12651 | /* Try to open DWP file FILE_NAME. |
12652 | The result is the bfd handle of the file. | |
12653 | If there is a problem finding or opening the file, return NULL. | |
12654 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12655 | same as symfile_bfd_open. */ | |
12656 | ||
192b62ce | 12657 | static gdb_bfd_ref_ptr |
976ca316 | 12658 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 12659 | { |
976ca316 | 12660 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12661 | 1 /*is_dwp*/, |
192b62ce | 12662 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12663 | if (abfd != NULL) |
12664 | return abfd; | |
12665 | ||
12666 | /* Work around upstream bug 15652. | |
12667 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12668 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12669 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12670 | of the executable's path may have discarded the needed info. | |
12671 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12672 | .gnu_debuglink, but that doesn't exist yet.] | |
12673 | Strip the directory from FILE_NAME and search again. */ | |
12674 | if (*debug_file_directory != '\0') | |
12675 | { | |
12676 | /* Don't implicitly search the current directory here. | |
12677 | If the user wants to search "." to handle this case, | |
12678 | it must be added to debug-file-directory. */ | |
976ca316 SM |
12679 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
12680 | 1 /*is_dwp*/, | |
6ac97d4c DE |
12681 | 0 /*search_cwd*/); |
12682 | } | |
12683 | ||
12684 | return NULL; | |
ab5088bf DE |
12685 | } |
12686 | ||
80626a55 DE |
12687 | /* Initialize the use of the DWP file for the current objfile. |
12688 | By convention the name of the DWP file is ${objfile}.dwp. | |
12689 | The result is NULL if it can't be found. */ | |
a766d390 | 12690 | |
400174b1 | 12691 | static std::unique_ptr<struct dwp_file> |
976ca316 | 12692 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 12693 | { |
976ca316 | 12694 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 12695 | |
82bf32bc JK |
12696 | /* Try to find first .dwp for the binary file before any symbolic links |
12697 | resolving. */ | |
6c447423 DE |
12698 | |
12699 | /* If the objfile is a debug file, find the name of the real binary | |
12700 | file and get the name of dwp file from there. */ | |
d721ba37 | 12701 | std::string dwp_name; |
6c447423 DE |
12702 | if (objfile->separate_debug_objfile_backlink != NULL) |
12703 | { | |
12704 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12705 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12706 | |
d721ba37 | 12707 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12708 | } |
12709 | else | |
d721ba37 PA |
12710 | dwp_name = objfile->original_name; |
12711 | ||
12712 | dwp_name += ".dwp"; | |
80626a55 | 12713 | |
976ca316 | 12714 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12715 | if (dbfd == NULL |
12716 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12717 | { | |
12718 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12719 | dwp_name = objfile_name (objfile); |
12720 | dwp_name += ".dwp"; | |
976ca316 | 12721 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12722 | } |
12723 | ||
80626a55 DE |
12724 | if (dbfd == NULL) |
12725 | { | |
6f738b01 SM |
12726 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
12727 | ||
400174b1 | 12728 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12729 | } |
400174b1 TT |
12730 | |
12731 | const char *name = bfd_get_filename (dbfd.get ()); | |
12732 | std::unique_ptr<struct dwp_file> dwp_file | |
12733 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12734 | |
0a0f4c01 | 12735 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12736 | dwp_file->elf_sections = |
976ca316 | 12737 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
12738 | dwp_file->num_sections, asection *); |
12739 | ||
5bb6e9dd TT |
12740 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12741 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
12742 | dwp_file.get ()); | |
80626a55 | 12743 | |
976ca316 | 12744 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 12745 | |
976ca316 | 12746 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 12747 | |
73869dc2 | 12748 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12749 | if (dwp_file->cus && dwp_file->tus |
12750 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12751 | { |
12752 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12753 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12754 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12755 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12756 | " TU version %s [in DWP file %s]"), | |
12757 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12758 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12759 | } |
08302ed2 DE |
12760 | |
12761 | if (dwp_file->cus) | |
12762 | dwp_file->version = dwp_file->cus->version; | |
12763 | else if (dwp_file->tus) | |
12764 | dwp_file->version = dwp_file->tus->version; | |
12765 | else | |
12766 | dwp_file->version = 2; | |
73869dc2 | 12767 | |
5bb6e9dd TT |
12768 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12769 | { | |
12770 | if (dwp_file->version == 2) | |
12771 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
12772 | dwp_file.get ()); | |
12773 | else | |
12774 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
12775 | dwp_file.get ()); | |
12776 | } | |
73869dc2 | 12777 | |
298e9637 SM |
12778 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12779 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12780 | |
6f738b01 SM |
12781 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
12782 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
12783 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12784 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12785 | |
12786 | return dwp_file; | |
3019eac3 | 12787 | } |
c906108c | 12788 | |
ab5088bf DE |
12789 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12790 | ||
12791 | static struct dwp_file * | |
976ca316 | 12792 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 12793 | { |
976ca316 | 12794 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12795 | { |
976ca316 SM |
12796 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
12797 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 12798 | } |
976ca316 | 12799 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12800 | } |
12801 | ||
80626a55 DE |
12802 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12803 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12804 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12805 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12806 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12807 | ||
12808 | This is called, for example, when wanting to read a variable with a | |
12809 | complex location. Therefore we don't want to do file i/o for every call. | |
12810 | Therefore we don't want to look for a DWO file on every call. | |
12811 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12812 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12813 | for a DWO file. | |
12814 | ||
1c658ad5 | 12815 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12816 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12817 | |
3019eac3 | 12818 | static struct dwo_unit * |
4ab09049 | 12819 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12820 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12821 | { |
976ca316 SM |
12822 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
12823 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
12824 | const char *kind = is_debug_types ? "TU" : "CU"; |
12825 | void **dwo_file_slot; | |
3019eac3 | 12826 | struct dwo_file *dwo_file; |
80626a55 | 12827 | struct dwp_file *dwp_file; |
cb1df416 | 12828 | |
6a506a2d DE |
12829 | /* First see if there's a DWP file. |
12830 | If we have a DWP file but didn't find the DWO inside it, don't | |
12831 | look for the original DWO file. It makes gdb behave differently | |
12832 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12833 | |
976ca316 | 12834 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 12835 | if (dwp_file != NULL) |
cf2c3c16 | 12836 | { |
80626a55 DE |
12837 | const struct dwp_hash_table *dwp_htab = |
12838 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12839 | ||
12840 | if (dwp_htab != NULL) | |
12841 | { | |
12842 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
12843 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
12844 | is_debug_types); | |
80626a55 DE |
12845 | |
12846 | if (dwo_cutu != NULL) | |
12847 | { | |
6f738b01 SM |
12848 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
12849 | kind, hex_string (signature), | |
12850 | host_address_to_string (dwo_cutu)); | |
12851 | ||
80626a55 DE |
12852 | return dwo_cutu; |
12853 | } | |
12854 | } | |
12855 | } | |
6a506a2d | 12856 | else |
80626a55 | 12857 | { |
6a506a2d | 12858 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12859 | |
976ca316 | 12860 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 12861 | if (*dwo_file_slot == NULL) |
80626a55 | 12862 | { |
6a506a2d | 12863 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12864 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12865 | } |
6a506a2d | 12866 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12867 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12868 | |
6a506a2d | 12869 | if (dwo_file != NULL) |
19c3d4c9 | 12870 | { |
6a506a2d DE |
12871 | struct dwo_unit *dwo_cutu = NULL; |
12872 | ||
12873 | if (is_debug_types && dwo_file->tus) | |
12874 | { | |
12875 | struct dwo_unit find_dwo_cutu; | |
12876 | ||
12877 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12878 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12879 | dwo_cutu |
b0b6a987 TT |
12880 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12881 | &find_dwo_cutu); | |
6a506a2d | 12882 | } |
33c5cd75 | 12883 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12884 | { |
33c5cd75 DB |
12885 | struct dwo_unit find_dwo_cutu; |
12886 | ||
12887 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12888 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12889 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12890 | &find_dwo_cutu); |
6a506a2d DE |
12891 | } |
12892 | ||
12893 | if (dwo_cutu != NULL) | |
12894 | { | |
6f738b01 SM |
12895 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
12896 | kind, dwo_name, hex_string (signature), | |
12897 | host_address_to_string (dwo_cutu)); | |
12898 | ||
6a506a2d | 12899 | return dwo_cutu; |
80626a55 DE |
12900 | } |
12901 | } | |
2e276125 | 12902 | } |
9cdd5dbd | 12903 | |
80626a55 DE |
12904 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12905 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12906 | correctly to find the file. */ | |
12907 | ||
6f738b01 SM |
12908 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
12909 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 12910 | |
6656a72d DE |
12911 | /* This is a warning and not a complaint because it can be caused by |
12912 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12913 | { |
12914 | /* Print the name of the DWP file if we looked there, helps the user | |
12915 | better diagnose the problem. */ | |
791afaa2 | 12916 | std::string dwp_text; |
43942612 DE |
12917 | |
12918 | if (dwp_file != NULL) | |
791afaa2 TT |
12919 | dwp_text = string_printf (" [in DWP file %s]", |
12920 | lbasename (dwp_file->name)); | |
43942612 | 12921 | |
9d8780f0 | 12922 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12923 | " [in module %s]"), |
4ab09049 SM |
12924 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12925 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12926 | } |
3019eac3 | 12927 | return NULL; |
5fb290d7 DJ |
12928 | } |
12929 | ||
80626a55 DE |
12930 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12931 | See lookup_dwo_cutu_unit for details. */ | |
12932 | ||
12933 | static struct dwo_unit * | |
4ab09049 | 12934 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12935 | ULONGEST signature) |
12936 | { | |
4ab09049 SM |
12937 | gdb_assert (!cu->per_cu->is_debug_types); |
12938 | ||
12939 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12940 | } |
12941 | ||
12942 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12943 | See lookup_dwo_cutu_unit for details. */ | |
12944 | ||
12945 | static struct dwo_unit * | |
4ab09049 | 12946 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12947 | { |
4ab09049 SM |
12948 | gdb_assert (cu->per_cu->is_debug_types); |
12949 | ||
12950 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12951 | ||
12952 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12953 | } |
12954 | ||
89e63ee4 DE |
12955 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12956 | ||
12957 | static int | |
12958 | queue_and_load_dwo_tu (void **slot, void *info) | |
12959 | { | |
12960 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12961 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12962 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12963 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12964 | |
12965 | if (sig_type != NULL) | |
12966 | { | |
89e63ee4 DE |
12967 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's |
12968 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12969 | while processing PER_CU. */ | |
0d305d5c TT |
12970 | if (maybe_queue_comp_unit (NULL, sig_type, cu->per_objfile, |
12971 | cu->language)) | |
12972 | load_full_type_unit (sig_type, cu->per_objfile); | |
12973 | cu->per_cu->imported_symtabs_push (sig_type); | |
89e63ee4 DE |
12974 | } |
12975 | ||
12976 | return 1; | |
12977 | } | |
12978 | ||
1b555f17 | 12979 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12980 | The DWO may have the only definition of the type, though it may not be |
12981 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12982 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12983 | ||
12984 | static void | |
1b555f17 | 12985 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12986 | { |
12987 | struct dwo_unit *dwo_unit; | |
12988 | struct dwo_file *dwo_file; | |
12989 | ||
1b555f17 SM |
12990 | gdb_assert (cu != nullptr); |
12991 | gdb_assert (!cu->per_cu->is_debug_types); | |
12992 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12993 | |
1b555f17 | 12994 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12995 | gdb_assert (dwo_unit != NULL); |
12996 | ||
12997 | dwo_file = dwo_unit->dwo_file; | |
12998 | if (dwo_file->tus != NULL) | |
1b555f17 | 12999 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13000 | } |
13001 | ||
3019eac3 | 13002 | /* Read in various DIEs. */ |
348e048f | 13003 | |
d389af10 | 13004 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13005 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13006 | already referenced by DW_AT_abstract_origin from the children of the | |
13007 | current DIE. */ | |
d389af10 JK |
13008 | |
13009 | static void | |
13010 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13011 | { | |
13012 | struct die_info *child_die; | |
791afaa2 | 13013 | sect_offset *offsetp; |
d389af10 JK |
13014 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13015 | struct die_info *origin_die; | |
13016 | /* Iterator of the ORIGIN_DIE children. */ | |
13017 | struct die_info *origin_child_die; | |
d389af10 | 13018 | struct attribute *attr; |
cd02d79d PA |
13019 | struct dwarf2_cu *origin_cu; |
13020 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13021 | |
13022 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13023 | if (!attr) | |
13024 | return; | |
13025 | ||
cd02d79d PA |
13026 | /* Note that following die references may follow to a die in a |
13027 | different cu. */ | |
13028 | ||
13029 | origin_cu = cu; | |
13030 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13031 | ||
13032 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13033 | symbols in. */ | |
13034 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13035 | origin_cu->list_in_scope = cu->list_in_scope; | |
13036 | ||
edb3359d DJ |
13037 | if (die->tag != origin_die->tag |
13038 | && !(die->tag == DW_TAG_inlined_subroutine | |
13039 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13040 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13041 | sect_offset_str (die->sect_off), |
13042 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13043 | |
34dc0f95 TBA |
13044 | /* Find if the concrete and abstract trees are structurally the |
13045 | same. This is a shallow traversal and it is not bullet-proof; | |
13046 | the compiler can trick the debugger into believing that the trees | |
13047 | are isomorphic, whereas they actually are not. However, the | |
13048 | likelyhood of this happening is pretty low, and a full-fledged | |
13049 | check would be an overkill. */ | |
13050 | bool are_isomorphic = true; | |
13051 | die_info *concrete_child = die->child; | |
13052 | die_info *abstract_child = origin_die->child; | |
13053 | while (concrete_child != nullptr || abstract_child != nullptr) | |
13054 | { | |
13055 | if (concrete_child == nullptr | |
13056 | || abstract_child == nullptr | |
13057 | || concrete_child->tag != abstract_child->tag) | |
13058 | { | |
13059 | are_isomorphic = false; | |
13060 | break; | |
13061 | } | |
13062 | ||
13063 | concrete_child = concrete_child->sibling; | |
13064 | abstract_child = abstract_child->sibling; | |
13065 | } | |
13066 | ||
13067 | /* Walk the origin's children in parallel to the concrete children. | |
13068 | This helps match an origin child in case the debug info misses | |
13069 | DW_AT_abstract_origin attributes. Keep in mind that the abstract | |
13070 | origin tree may not have the same tree structure as the concrete | |
13071 | DIE, though. */ | |
13072 | die_info *corresponding_abstract_child | |
13073 | = are_isomorphic ? origin_die->child : nullptr; | |
13074 | ||
791afaa2 | 13075 | std::vector<sect_offset> offsets; |
d389af10 | 13076 | |
3ea89b92 PMR |
13077 | for (child_die = die->child; |
13078 | child_die && child_die->tag; | |
436c571c | 13079 | child_die = child_die->sibling) |
3ea89b92 PMR |
13080 | { |
13081 | struct die_info *child_origin_die; | |
13082 | struct dwarf2_cu *child_origin_cu; | |
13083 | ||
13084 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13085 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13086 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13087 | present in the abstract instance but not referenced in the concrete | |
13088 | one. */ | |
216f72a1 | 13089 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13090 | || child_die->tag == DW_TAG_GNU_call_site) |
34dc0f95 TBA |
13091 | { |
13092 | if (are_isomorphic) | |
13093 | corresponding_abstract_child | |
13094 | = corresponding_abstract_child->sibling; | |
13095 | continue; | |
13096 | } | |
3ea89b92 | 13097 | |
c38f313d DJ |
13098 | /* For each CHILD_DIE, find the corresponding child of |
13099 | ORIGIN_DIE. If there is more than one layer of | |
13100 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13101 | but GCC versions at least through 4.4 generate this (GCC PR | |
13102 | 40573). */ | |
3ea89b92 PMR |
13103 | child_origin_die = child_die; |
13104 | child_origin_cu = cu; | |
c38f313d DJ |
13105 | while (1) |
13106 | { | |
cd02d79d PA |
13107 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13108 | child_origin_cu); | |
c38f313d DJ |
13109 | if (attr == NULL) |
13110 | break; | |
cd02d79d PA |
13111 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13112 | &child_origin_cu); | |
c38f313d DJ |
13113 | } |
13114 | ||
34dc0f95 TBA |
13115 | /* If missing DW_AT_abstract_origin, try the corresponding child |
13116 | of the origin. Clang emits such lexical scopes. */ | |
13117 | if (child_origin_die == child_die | |
13118 | && dwarf2_attr (child_die, DW_AT_abstract_origin, cu) == nullptr | |
13119 | && are_isomorphic | |
13120 | && child_die->tag == DW_TAG_lexical_block) | |
13121 | child_origin_die = corresponding_abstract_child; | |
13122 | ||
d389af10 JK |
13123 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13124 | counterpart may exist. */ | |
c38f313d | 13125 | if (child_origin_die != child_die) |
d389af10 | 13126 | { |
edb3359d DJ |
13127 | if (child_die->tag != child_origin_die->tag |
13128 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13129 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13130 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13131 | "different tags"), |
9d8780f0 SM |
13132 | sect_offset_str (child_die->sect_off), |
13133 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13134 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13135 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13136 | "different parents"), |
9d8780f0 SM |
13137 | sect_offset_str (child_die->sect_off), |
13138 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13139 | else |
791afaa2 | 13140 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13141 | } |
34dc0f95 TBA |
13142 | |
13143 | if (are_isomorphic) | |
13144 | corresponding_abstract_child = corresponding_abstract_child->sibling; | |
d389af10 | 13145 | } |
791afaa2 TT |
13146 | std::sort (offsets.begin (), offsets.end ()); |
13147 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13148 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13149 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13150 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13151 | "to DIE %s as their abstract origin"), |
13152 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13153 | |
791afaa2 | 13154 | offsetp = offsets.data (); |
d389af10 JK |
13155 | origin_child_die = origin_die->child; |
13156 | while (origin_child_die && origin_child_die->tag) | |
13157 | { | |
13158 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13159 | while (offsetp < offsets_end |
9c541725 | 13160 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13161 | offsetp++; |
b64f50a1 | 13162 | if (offsetp >= offsets_end |
9c541725 | 13163 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13164 | { |
adde2bff DE |
13165 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13166 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13167 | This can happen with mutually referenced abstract_origins. | |
13168 | PR 16581. */ | |
13169 | if (!origin_child_die->in_process) | |
13170 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13171 | } |
436c571c | 13172 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13173 | } |
cd02d79d | 13174 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13175 | |
13176 | if (cu != origin_cu) | |
13177 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13178 | } |
13179 | ||
c906108c | 13180 | static void |
e7c27a73 | 13181 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13182 | { |
5e22e966 | 13183 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13184 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13185 | struct context_stack *newobj; |
c906108c SS |
13186 | CORE_ADDR lowpc; |
13187 | CORE_ADDR highpc; | |
13188 | struct die_info *child_die; | |
edb3359d | 13189 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13190 | const char *name; |
e142c38c | 13191 | CORE_ADDR baseaddr; |
801e3a5b | 13192 | struct block *block; |
edb3359d | 13193 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13194 | std::vector<struct symbol *> template_args; |
34eaf542 | 13195 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13196 | |
13197 | if (inlined_func) | |
13198 | { | |
13199 | /* If we do not have call site information, we can't show the | |
13200 | caller of this inlined function. That's too confusing, so | |
13201 | only use the scope for local variables. */ | |
13202 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13203 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13204 | if (call_line == NULL || call_file == NULL) | |
13205 | { | |
13206 | read_lexical_block_scope (die, cu); | |
13207 | return; | |
13208 | } | |
13209 | } | |
c906108c | 13210 | |
b3b3bada | 13211 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13212 | |
94af9270 | 13213 | name = dwarf2_name (die, cu); |
c906108c | 13214 | |
e8d05480 JB |
13215 | /* Ignore functions with missing or empty names. These are actually |
13216 | illegal according to the DWARF standard. */ | |
13217 | if (name == NULL) | |
13218 | { | |
b98664d3 | 13219 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13220 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13221 | return; |
13222 | } | |
13223 | ||
13224 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13225 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13226 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13227 | { |
ae4d0c03 | 13228 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13229 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13230 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13231 | "for subprogram DIE at %s"), |
13232 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13233 | return; |
13234 | } | |
c906108c | 13235 | |
3e29f34a MR |
13236 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13237 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13238 | |
34eaf542 TT |
13239 | /* If we have any template arguments, then we must allocate a |
13240 | different sort of symbol. */ | |
436c571c | 13241 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13242 | { |
13243 | if (child_die->tag == DW_TAG_template_type_param | |
13244 | || child_die->tag == DW_TAG_template_value_param) | |
13245 | { | |
8c14c3a3 | 13246 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13247 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13248 | break; |
13249 | } | |
13250 | } | |
13251 | ||
702cf3f5 | 13252 | gdb_assert (cu->get_builder () != nullptr); |
c24bdb02 | 13253 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13254 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13255 | (struct symbol *) templ_func); | |
4c2df51b | 13256 | |
81873cc8 | 13257 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13258 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13259 | cu->language); |
13260 | ||
4cecd739 DJ |
13261 | /* If there is a location expression for DW_AT_frame_base, record |
13262 | it. */ | |
e142c38c | 13263 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13264 | if (attr != nullptr) |
fe978cb0 | 13265 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13266 | |
63e43d3a PMR |
13267 | /* If there is a location for the static link, record it. */ |
13268 | newobj->static_link = NULL; | |
13269 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13270 | if (attr != nullptr) |
63e43d3a | 13271 | { |
224c3ddb SM |
13272 | newobj->static_link |
13273 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13274 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13275 | cu->addr_type ()); |
63e43d3a PMR |
13276 | } |
13277 | ||
c24bdb02 | 13278 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13279 | |
639d11d3 | 13280 | if (die->child != NULL) |
c906108c | 13281 | { |
639d11d3 | 13282 | child_die = die->child; |
c906108c SS |
13283 | while (child_die && child_die->tag) |
13284 | { | |
34eaf542 TT |
13285 | if (child_die->tag == DW_TAG_template_type_param |
13286 | || child_die->tag == DW_TAG_template_value_param) | |
13287 | { | |
13288 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13289 | ||
f1078f66 | 13290 | if (arg != NULL) |
2f4732b0 | 13291 | template_args.push_back (arg); |
34eaf542 TT |
13292 | } |
13293 | else | |
13294 | process_die (child_die, cu); | |
436c571c | 13295 | child_die = child_die->sibling; |
c906108c SS |
13296 | } |
13297 | } | |
13298 | ||
d389af10 JK |
13299 | inherit_abstract_dies (die, cu); |
13300 | ||
4a811a97 UW |
13301 | /* If we have a DW_AT_specification, we might need to import using |
13302 | directives from the context of the specification DIE. See the | |
13303 | comment in determine_prefix. */ | |
13304 | if (cu->language == language_cplus | |
13305 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13306 | { | |
13307 | struct dwarf2_cu *spec_cu = cu; | |
13308 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13309 | ||
13310 | while (spec_die) | |
13311 | { | |
13312 | child_die = spec_die->child; | |
13313 | while (child_die && child_die->tag) | |
13314 | { | |
13315 | if (child_die->tag == DW_TAG_imported_module) | |
13316 | process_die (child_die, spec_cu); | |
436c571c | 13317 | child_die = child_die->sibling; |
4a811a97 UW |
13318 | } |
13319 | ||
13320 | /* In some cases, GCC generates specification DIEs that | |
13321 | themselves contain DW_AT_specification attributes. */ | |
13322 | spec_die = die_specification (spec_die, &spec_cu); | |
13323 | } | |
13324 | } | |
13325 | ||
c24bdb02 | 13326 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13327 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13328 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13329 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13330 | |
df8a16a1 | 13331 | /* For C++, set the block's scope. */ |
45280282 IB |
13332 | if ((cu->language == language_cplus |
13333 | || cu->language == language_fortran | |
c44af4eb TT |
13334 | || cu->language == language_d |
13335 | || cu->language == language_rust) | |
4d4ec4e5 | 13336 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13337 | block_set_scope (block, determine_prefix (die, cu), |
13338 | &objfile->objfile_obstack); | |
df8a16a1 | 13339 | |
801e3a5b JB |
13340 | /* If we have address ranges, record them. */ |
13341 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13342 | |
a60f3166 | 13343 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13344 | |
34eaf542 | 13345 | /* Attach template arguments to function. */ |
2f4732b0 | 13346 | if (!template_args.empty ()) |
34eaf542 TT |
13347 | { |
13348 | gdb_assert (templ_func != NULL); | |
13349 | ||
2f4732b0 | 13350 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13351 | templ_func->template_arguments |
dda83cd7 | 13352 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13353 | templ_func->n_template_arguments); |
34eaf542 | 13354 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13355 | template_args.data (), |
34eaf542 | 13356 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13357 | |
13358 | /* Make sure that the symtab is set on the new symbols. Even | |
13359 | though they don't appear in this symtab directly, other parts | |
13360 | of gdb assume that symbols do, and this is reasonably | |
13361 | true. */ | |
8634679f | 13362 | for (symbol *sym : template_args) |
3e1d3d8c | 13363 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13364 | } |
13365 | ||
208d8187 JB |
13366 | /* In C++, we can have functions nested inside functions (e.g., when |
13367 | a function declares a class that has methods). This means that | |
13368 | when we finish processing a function scope, we may need to go | |
13369 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13370 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13371 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13372 | |
921e78cf JB |
13373 | /* If we've finished processing a top-level function, subsequent |
13374 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13375 | if (cu->get_builder ()->outermost_context_p ()) |
13376 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13377 | } |
13378 | ||
13379 | /* Process all the DIES contained within a lexical block scope. Start | |
13380 | a new scope, process the dies, and then close the scope. */ | |
13381 | ||
13382 | static void | |
e7c27a73 | 13383 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13384 | { |
5e22e966 | 13385 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13386 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13387 | CORE_ADDR lowpc, highpc; |
13388 | struct die_info *child_die; | |
e142c38c DJ |
13389 | CORE_ADDR baseaddr; |
13390 | ||
b3b3bada | 13391 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13392 | |
13393 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13394 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13395 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13396 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13397 | describe ranges. */ |
e385593e JK |
13398 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13399 | { | |
13400 | case PC_BOUNDS_NOT_PRESENT: | |
13401 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13402 | there was no wrapping by that DW_TAG_lexical_block. | |
13403 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13404 | for (child_die = die->child; | |
13405 | child_die != NULL && child_die->tag; | |
436c571c | 13406 | child_die = child_die->sibling) |
4f7bc5ed TT |
13407 | { |
13408 | /* We might already be processing this DIE. This can happen | |
13409 | in an unusual circumstance -- where a subroutine A | |
13410 | appears lexically in another subroutine B, but A actually | |
13411 | inlines B. The recursion is broken here, rather than in | |
13412 | inherit_abstract_dies, because it seems better to simply | |
13413 | drop concrete children here. */ | |
13414 | if (!child_die->in_process) | |
13415 | process_die (child_die, cu); | |
13416 | } | |
e385593e JK |
13417 | return; |
13418 | case PC_BOUNDS_INVALID: | |
13419 | return; | |
13420 | } | |
3e29f34a MR |
13421 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13422 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13423 | |
c24bdb02 | 13424 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13425 | if (die->child != NULL) |
c906108c | 13426 | { |
639d11d3 | 13427 | child_die = die->child; |
c906108c SS |
13428 | while (child_die && child_die->tag) |
13429 | { | |
e7c27a73 | 13430 | process_die (child_die, cu); |
436c571c | 13431 | child_die = child_die->sibling; |
c906108c SS |
13432 | } |
13433 | } | |
3ea89b92 | 13434 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13435 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13436 | |
c24bdb02 KS |
13437 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13438 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13439 | { |
801e3a5b | 13440 | struct block *block |
dda83cd7 | 13441 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13442 | cstk.start_addr, highpc); |
801e3a5b JB |
13443 | |
13444 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13445 | do here, means that recording a parent's ranges entails |
13446 | walking across all its children's ranges as they appear in | |
13447 | the address map, which is quadratic behavior. | |
13448 | ||
13449 | It would be nicer to record the parent's ranges before | |
13450 | traversing its children, simply overriding whatever you find | |
13451 | there. But since we don't even decide whether to create a | |
13452 | block until after we've traversed its children, that's hard | |
13453 | to do. */ | |
801e3a5b | 13454 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13455 | } |
c24bdb02 KS |
13456 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13457 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13458 | } |
13459 | ||
216f72a1 | 13460 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13461 | |
13462 | static void | |
13463 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13464 | { | |
5e22e966 | 13465 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13466 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13467 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13468 | CORE_ADDR pc, baseaddr; |
13469 | struct attribute *attr; | |
13470 | struct call_site *call_site, call_site_local; | |
13471 | void **slot; | |
13472 | int nparams; | |
13473 | struct die_info *child_die; | |
13474 | ||
b3b3bada | 13475 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13476 | |
216f72a1 JK |
13477 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13478 | if (attr == NULL) | |
13479 | { | |
13480 | /* This was a pre-DWARF-5 GNU extension alias | |
13481 | for DW_AT_call_return_pc. */ | |
13482 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13483 | } | |
96408a79 SA |
13484 | if (!attr) |
13485 | { | |
b98664d3 | 13486 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13487 | "DIE %s [in module %s]"), |
13488 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13489 | return; |
13490 | } | |
95f982e5 | 13491 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13492 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13493 | |
13494 | if (cu->call_site_htab == NULL) | |
13495 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13496 | NULL, &objfile->objfile_obstack, | |
13497 | hashtab_obstack_allocate, NULL); | |
13498 | call_site_local.pc = pc; | |
13499 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13500 | if (*slot != NULL) | |
13501 | { | |
b98664d3 | 13502 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13503 | "DIE %s [in module %s]"), |
13504 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13505 | objfile_name (objfile)); |
96408a79 SA |
13506 | return; |
13507 | } | |
13508 | ||
13509 | /* Count parameters at the caller. */ | |
13510 | ||
13511 | nparams = 0; | |
13512 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13513 | child_die = child_die->sibling) |
96408a79 | 13514 | { |
216f72a1 | 13515 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13516 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13517 | { |
b98664d3 | 13518 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13519 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13520 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13521 | objfile_name (objfile)); |
96408a79 SA |
13522 | continue; |
13523 | } | |
13524 | ||
13525 | nparams++; | |
13526 | } | |
13527 | ||
224c3ddb SM |
13528 | call_site |
13529 | = ((struct call_site *) | |
13530 | obstack_alloc (&objfile->objfile_obstack, | |
13531 | sizeof (*call_site) | |
13532 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13533 | *slot = call_site; |
13534 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13535 | call_site->pc = pc; | |
13536 | ||
216f72a1 JK |
13537 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13538 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13539 | { |
13540 | struct die_info *func_die; | |
13541 | ||
13542 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13543 | for (func_die = die->parent; | |
13544 | func_die && func_die->tag != DW_TAG_subprogram | |
13545 | && func_die->tag != DW_TAG_subroutine_type; | |
13546 | func_die = func_die->parent); | |
13547 | ||
216f72a1 JK |
13548 | /* DW_AT_call_all_calls is a superset |
13549 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13550 | if (func_die |
dda83cd7 SM |
13551 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13552 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13553 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13554 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13555 | { | |
13556 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13557 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13558 | both the initial caller containing the real return address PC and | |
13559 | the final callee containing the current PC of a chain of tail | |
13560 | calls do not need to have the tail call list complete. But any | |
13561 | function candidate for a virtual tail call frame searched via | |
13562 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13563 | determined unambiguously. */ | |
13564 | } | |
13565 | else | |
13566 | { | |
13567 | struct type *func_type = NULL; | |
13568 | ||
13569 | if (func_die) | |
13570 | func_type = get_die_type (func_die, cu); | |
13571 | if (func_type != NULL) | |
13572 | { | |
78134374 | 13573 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13574 | |
13575 | /* Enlist this call site to the function. */ | |
13576 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13577 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13578 | } | |
13579 | else | |
b98664d3 | 13580 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13581 | "DIE %s [in module %s]"), |
13582 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13583 | } |
13584 | } | |
13585 | ||
216f72a1 JK |
13586 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13587 | if (attr == NULL) | |
13588 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13589 | if (attr == NULL) | |
13590 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13591 | if (attr == NULL) |
216f72a1 JK |
13592 | { |
13593 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13594 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13595 | } | |
96408a79 | 13596 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13597 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13598 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13599 | else if (attr->form_is_block ()) |
96408a79 SA |
13600 | { |
13601 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13602 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13603 | |
8d749320 | 13604 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13605 | dlbaton->data = block->data; |
13606 | dlbaton->size = block->size; | |
a50264ba | 13607 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13608 | dlbaton->per_cu = cu->per_cu; |
13609 | ||
13610 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13611 | } | |
cd6c91b4 | 13612 | else if (attr->form_is_ref ()) |
96408a79 | 13613 | { |
96408a79 SA |
13614 | struct dwarf2_cu *target_cu = cu; |
13615 | struct die_info *target_die; | |
13616 | ||
ac9ec31b | 13617 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13618 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13619 | if (die_is_declaration (target_die, target_cu)) |
13620 | { | |
7d45c7c3 | 13621 | const char *target_physname; |
9112db09 JK |
13622 | |
13623 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13624 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13625 | if (target_physname == NULL) |
9112db09 | 13626 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13627 | if (target_physname == NULL) |
b98664d3 | 13628 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13629 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13630 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13631 | else |
7d455152 | 13632 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13633 | } |
13634 | else | |
13635 | { | |
13636 | CORE_ADDR lowpc; | |
13637 | ||
13638 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13639 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13640 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13641 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13642 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13643 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13644 | else |
3e29f34a MR |
13645 | { |
13646 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13647 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13648 | } | |
96408a79 SA |
13649 | } |
13650 | } | |
13651 | else | |
b98664d3 | 13652 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13653 | "block nor reference, for DIE %s [in module %s]"), |
13654 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13655 | |
13656 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13657 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13658 | |
13659 | for (child_die = die->child; | |
13660 | child_die && child_die->tag; | |
436c571c | 13661 | child_die = child_die->sibling) |
96408a79 | 13662 | { |
96408a79 | 13663 | struct call_site_parameter *parameter; |
1788b2d3 | 13664 | struct attribute *loc, *origin; |
96408a79 | 13665 | |
216f72a1 | 13666 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13667 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
13668 | { |
13669 | /* Already printed the complaint above. */ | |
13670 | continue; | |
13671 | } | |
13672 | ||
13673 | gdb_assert (call_site->parameter_count < nparams); | |
13674 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13675 | ||
1788b2d3 JK |
13676 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13677 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13678 | register is contained in DW_AT_call_value. */ |
96408a79 | 13679 | |
24c5c679 | 13680 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13681 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13682 | if (origin == NULL) | |
13683 | { | |
13684 | /* This was a pre-DWARF-5 GNU extension alias | |
13685 | for DW_AT_call_parameter. */ | |
13686 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13687 | } | |
cd6c91b4 | 13688 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13689 | { |
1788b2d3 | 13690 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13691 | |
0826b30a | 13692 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13693 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13694 | { |
13695 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13696 | binding can be done only inside one CU. Such referenced DIE | |
13697 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13698 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13699 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13700 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13701 | objfile_name (objfile)); |
d76b7dbc JK |
13702 | continue; |
13703 | } | |
9c541725 PA |
13704 | parameter->u.param_cu_off |
13705 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13706 | } |
4fc6c0d5 | 13707 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13708 | { |
b98664d3 | 13709 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13710 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13711 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13712 | continue; |
13713 | } | |
24c5c679 | 13714 | else |
96408a79 | 13715 | { |
9d2246fc TT |
13716 | struct dwarf_block *block = loc->as_block (); |
13717 | ||
24c5c679 | 13718 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 13719 | (block->data, &block->data[block->size]); |
24c5c679 JK |
13720 | if (parameter->u.dwarf_reg != -1) |
13721 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
13722 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
13723 | &block->data[block->size], | |
24c5c679 JK |
13724 | ¶meter->u.fb_offset)) |
13725 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13726 | else | |
13727 | { | |
b98664d3 | 13728 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13729 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13730 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13731 | "[in module %s]"), |
9d8780f0 | 13732 | sect_offset_str (child_die->sect_off), |
9c541725 | 13733 | objfile_name (objfile)); |
24c5c679 JK |
13734 | continue; |
13735 | } | |
96408a79 SA |
13736 | } |
13737 | ||
216f72a1 JK |
13738 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13739 | if (attr == NULL) | |
13740 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13741 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13742 | { |
b98664d3 | 13743 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13744 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13745 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13746 | objfile_name (objfile)); |
96408a79 SA |
13747 | continue; |
13748 | } | |
9d2246fc TT |
13749 | |
13750 | struct dwarf_block *block = attr->as_block (); | |
13751 | parameter->value = block->data; | |
13752 | parameter->value_size = block->size; | |
96408a79 SA |
13753 | |
13754 | /* Parameters are not pre-cleared by memset above. */ | |
13755 | parameter->data_value = NULL; | |
13756 | parameter->data_value_size = 0; | |
13757 | call_site->parameter_count++; | |
13758 | ||
216f72a1 JK |
13759 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13760 | if (attr == NULL) | |
13761 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13762 | if (attr != nullptr) |
96408a79 | 13763 | { |
4fc6c0d5 | 13764 | if (!attr->form_is_block ()) |
b98664d3 | 13765 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13766 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13767 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13768 | objfile_name (objfile)); |
96408a79 SA |
13769 | else |
13770 | { | |
9d2246fc TT |
13771 | block = attr->as_block (); |
13772 | parameter->data_value = block->data; | |
13773 | parameter->data_value_size = block->size; | |
96408a79 SA |
13774 | } |
13775 | } | |
13776 | } | |
13777 | } | |
13778 | ||
71a3c369 TT |
13779 | /* Helper function for read_variable. If DIE represents a virtual |
13780 | table, then return the type of the concrete object that is | |
13781 | associated with the virtual table. Otherwise, return NULL. */ | |
13782 | ||
13783 | static struct type * | |
13784 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13785 | { | |
13786 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13787 | if (attr == NULL) | |
13788 | return NULL; | |
13789 | ||
13790 | /* Find the type DIE. */ | |
13791 | struct die_info *type_die = NULL; | |
13792 | struct dwarf2_cu *type_cu = cu; | |
13793 | ||
cd6c91b4 | 13794 | if (attr->form_is_ref ()) |
71a3c369 TT |
13795 | type_die = follow_die_ref (die, attr, &type_cu); |
13796 | if (type_die == NULL) | |
13797 | return NULL; | |
13798 | ||
13799 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13800 | return NULL; | |
13801 | return die_containing_type (type_die, type_cu); | |
13802 | } | |
13803 | ||
13804 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13805 | ||
13806 | static void | |
13807 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13808 | { | |
13809 | struct rust_vtable_symbol *storage = NULL; | |
13810 | ||
13811 | if (cu->language == language_rust) | |
13812 | { | |
13813 | struct type *containing_type = rust_containing_type (die, cu); | |
13814 | ||
13815 | if (containing_type != NULL) | |
13816 | { | |
5e22e966 | 13817 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13818 | |
8c14c3a3 | 13819 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13820 | storage->concrete_type = containing_type; |
cf724bc9 | 13821 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13822 | } |
13823 | } | |
13824 | ||
e4a62c65 TV |
13825 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13826 | struct attribute *abstract_origin | |
13827 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13828 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13829 | if (res == NULL && loc && abstract_origin) | |
13830 | { | |
13831 | /* We have a variable without a name, but with a location and an abstract | |
13832 | origin. This may be a concrete instance of an abstract variable | |
13833 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13834 | later. */ | |
13835 | struct dwarf2_cu *origin_cu = cu; | |
13836 | struct die_info *origin_die | |
13837 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13838 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13839 | per_objfile->per_bfd->abstract_to_concrete | |
13840 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13841 | } |
71a3c369 TT |
13842 | } |
13843 | ||
43988095 JK |
13844 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13845 | reading .debug_rnglists. | |
13846 | Callback's type should be: | |
13847 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13848 | Return true if the attributes are present and valid, otherwise, | |
13849 | return false. */ | |
13850 | ||
13851 | template <typename Callback> | |
13852 | static bool | |
13853 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 13854 | dwarf_tag tag, Callback &&callback) |
43988095 | 13855 | { |
976ca316 SM |
13856 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13857 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 13858 | bfd *obfd = objfile->obfd; |
43988095 | 13859 | /* Base address selection entry. */ |
2b24b6e4 | 13860 | gdb::optional<CORE_ADDR> base; |
43988095 | 13861 | const gdb_byte *buffer; |
43988095 JK |
13862 | CORE_ADDR baseaddr; |
13863 | bool overflow = false; | |
d0ce17d8 CT |
13864 | ULONGEST addr_index; |
13865 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 13866 | |
43988095 | 13867 | base = cu->base_address; |
d0ce17d8 CT |
13868 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
13869 | rnglists_section->read (objfile); | |
43988095 | 13870 | |
d0ce17d8 | 13871 | if (offset >= rnglists_section->size) |
43988095 | 13872 | { |
b98664d3 | 13873 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13874 | offset); |
13875 | return false; | |
13876 | } | |
d0ce17d8 | 13877 | buffer = rnglists_section->buffer + offset; |
43988095 | 13878 | |
b3b3bada | 13879 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13880 | |
13881 | while (1) | |
13882 | { | |
7814882a JK |
13883 | /* Initialize it due to a false compiler warning. */ |
13884 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
13885 | const gdb_byte *buf_end = (rnglists_section->buffer |
13886 | + rnglists_section->size); | |
43988095 JK |
13887 | unsigned int bytes_read; |
13888 | ||
13889 | if (buffer == buf_end) | |
13890 | { | |
13891 | overflow = true; | |
13892 | break; | |
13893 | } | |
13894 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13895 | switch (rlet) | |
13896 | { | |
13897 | case DW_RLE_end_of_list: | |
13898 | break; | |
13899 | case DW_RLE_base_address: | |
13900 | if (buffer + cu->header.addr_size > buf_end) | |
13901 | { | |
13902 | overflow = true; | |
13903 | break; | |
13904 | } | |
c8a7a66f | 13905 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13906 | buffer += bytes_read; |
13907 | break; | |
dda83cd7 SM |
13908 | case DW_RLE_base_addressx: |
13909 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13910 | buffer += bytes_read; | |
13911 | base = read_addr_index (cu, addr_index); | |
13912 | break; | |
43988095 JK |
13913 | case DW_RLE_start_length: |
13914 | if (buffer + cu->header.addr_size > buf_end) | |
13915 | { | |
13916 | overflow = true; | |
13917 | break; | |
13918 | } | |
c8a7a66f TT |
13919 | range_beginning = cu->header.read_address (obfd, buffer, |
13920 | &bytes_read); | |
43988095 JK |
13921 | buffer += bytes_read; |
13922 | range_end = (range_beginning | |
13923 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13924 | buffer += bytes_read; | |
13925 | if (buffer > buf_end) | |
13926 | { | |
13927 | overflow = true; | |
13928 | break; | |
13929 | } | |
13930 | break; | |
d0ce17d8 | 13931 | case DW_RLE_startx_length: |
dda83cd7 SM |
13932 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
13933 | buffer += bytes_read; | |
13934 | range_beginning = read_addr_index (cu, addr_index); | |
13935 | if (buffer > buf_end) | |
13936 | { | |
13937 | overflow = true; | |
13938 | break; | |
13939 | } | |
13940 | range_end = (range_beginning | |
13941 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13942 | buffer += bytes_read; | |
13943 | break; | |
43988095 JK |
13944 | case DW_RLE_offset_pair: |
13945 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13946 | buffer += bytes_read; | |
13947 | if (buffer > buf_end) | |
13948 | { | |
13949 | overflow = true; | |
13950 | break; | |
13951 | } | |
13952 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13953 | buffer += bytes_read; | |
13954 | if (buffer > buf_end) | |
13955 | { | |
13956 | overflow = true; | |
13957 | break; | |
13958 | } | |
13959 | break; | |
13960 | case DW_RLE_start_end: | |
13961 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13962 | { | |
13963 | overflow = true; | |
13964 | break; | |
13965 | } | |
c8a7a66f TT |
13966 | range_beginning = cu->header.read_address (obfd, buffer, |
13967 | &bytes_read); | |
43988095 | 13968 | buffer += bytes_read; |
c8a7a66f | 13969 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13970 | buffer += bytes_read; |
13971 | break; | |
d0ce17d8 | 13972 | case DW_RLE_startx_endx: |
dda83cd7 SM |
13973 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
13974 | buffer += bytes_read; | |
13975 | range_beginning = read_addr_index (cu, addr_index); | |
13976 | if (buffer > buf_end) | |
13977 | { | |
13978 | overflow = true; | |
13979 | break; | |
13980 | } | |
13981 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13982 | buffer += bytes_read; | |
13983 | range_end = read_addr_index (cu, addr_index); | |
13984 | break; | |
43988095 | 13985 | default: |
b98664d3 | 13986 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13987 | return false; |
13988 | } | |
13989 | if (rlet == DW_RLE_end_of_list || overflow) | |
13990 | break; | |
13991 | if (rlet == DW_RLE_base_address) | |
13992 | continue; | |
13993 | ||
43988095 JK |
13994 | if (range_beginning > range_end) |
13995 | { | |
13996 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13997 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13998 | return false; |
13999 | } | |
14000 | ||
14001 | /* Empty range entries have no effect. */ | |
14002 | if (range_beginning == range_end) | |
14003 | continue; | |
14004 | ||
d0ce17d8 CT |
14005 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14006 | if (rlet == DW_RLE_offset_pair) | |
14007 | { | |
14008 | if (!base.has_value ()) | |
14009 | { | |
14010 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14011 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14012 | "DW_RLE_offset_pair)")); | |
14013 | return false; | |
14014 | } | |
14015 | ||
14016 | range_beginning += *base; | |
14017 | range_end += *base; | |
14018 | } | |
43988095 JK |
14019 | |
14020 | /* A not-uncommon case of bad debug info. | |
14021 | Don't pollute the addrmap with bad data. */ | |
14022 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14023 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14024 | { |
b98664d3 | 14025 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14026 | " [in module %s]"), objfile_name (objfile)); |
14027 | continue; | |
14028 | } | |
14029 | ||
14030 | callback (range_beginning, range_end); | |
14031 | } | |
14032 | ||
14033 | if (overflow) | |
14034 | { | |
b98664d3 | 14035 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14036 | "for DW_AT_ranges attribute"), |
14037 | offset); | |
14038 | return false; | |
14039 | } | |
14040 | ||
14041 | return true; | |
14042 | } | |
14043 | ||
14044 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14045 | Callback's type should be: | |
14046 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14047 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14048 | |
43988095 | 14049 | template <typename Callback> |
43039443 | 14050 | static int |
d0ce17d8 | 14051 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14052 | Callback &&callback) |
43039443 | 14053 | { |
5e22e966 SM |
14054 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14055 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14056 | struct comp_unit_head *cu_header = &cu->header; |
14057 | bfd *obfd = objfile->obfd; | |
14058 | unsigned int addr_size = cu_header->addr_size; | |
14059 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14060 | /* Base address selection entry. */ | |
2b24b6e4 | 14061 | gdb::optional<CORE_ADDR> base; |
43039443 | 14062 | unsigned int dummy; |
d521ce57 | 14063 | const gdb_byte *buffer; |
ff013f42 | 14064 | CORE_ADDR baseaddr; |
43039443 | 14065 | |
43988095 | 14066 | if (cu_header->version >= 5) |
d0ce17d8 | 14067 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14068 | |
d00adf39 | 14069 | base = cu->base_address; |
43039443 | 14070 | |
5e22e966 SM |
14071 | per_objfile->per_bfd->ranges.read (objfile); |
14072 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14073 | { |
b98664d3 | 14074 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14075 | offset); |
14076 | return 0; | |
14077 | } | |
5e22e966 | 14078 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14079 | |
b3b3bada | 14080 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14081 | |
43039443 JK |
14082 | while (1) |
14083 | { | |
14084 | CORE_ADDR range_beginning, range_end; | |
14085 | ||
c8a7a66f | 14086 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14087 | buffer += addr_size; |
c8a7a66f | 14088 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14089 | buffer += addr_size; |
14090 | offset += 2 * addr_size; | |
14091 | ||
14092 | /* An end of list marker is a pair of zero addresses. */ | |
14093 | if (range_beginning == 0 && range_end == 0) | |
14094 | /* Found the end of list entry. */ | |
14095 | break; | |
14096 | ||
14097 | /* Each base address selection entry is a pair of 2 values. | |
14098 | The first is the largest possible address, the second is | |
14099 | the base address. Check for a base address here. */ | |
14100 | if ((range_beginning & mask) == mask) | |
14101 | { | |
28d2bfb9 AB |
14102 | /* If we found the largest possible address, then we already |
14103 | have the base address in range_end. */ | |
14104 | base = range_end; | |
43039443 JK |
14105 | continue; |
14106 | } | |
14107 | ||
2b24b6e4 | 14108 | if (!base.has_value ()) |
43039443 JK |
14109 | { |
14110 | /* We have no valid base address for the ranges | |
14111 | data. */ | |
b98664d3 | 14112 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14113 | return 0; |
14114 | } | |
14115 | ||
9277c30c UW |
14116 | if (range_beginning > range_end) |
14117 | { | |
14118 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14119 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14120 | return 0; |
14121 | } | |
14122 | ||
14123 | /* Empty range entries have no effect. */ | |
14124 | if (range_beginning == range_end) | |
14125 | continue; | |
14126 | ||
2b24b6e4 TT |
14127 | range_beginning += *base; |
14128 | range_end += *base; | |
43039443 | 14129 | |
01093045 DE |
14130 | /* A not-uncommon case of bad debug info. |
14131 | Don't pollute the addrmap with bad data. */ | |
14132 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14133 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14134 | { |
b98664d3 | 14135 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14136 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14137 | continue; |
14138 | } | |
14139 | ||
5f46c5a5 JK |
14140 | callback (range_beginning, range_end); |
14141 | } | |
14142 | ||
14143 | return 1; | |
14144 | } | |
14145 | ||
14146 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14147 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
efd7398e | 14148 | If RANGES_PST is not NULL we should set up the `psymtabs_addrmap'. */ |
5f46c5a5 JK |
14149 | |
14150 | static int | |
14151 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14152 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14153 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14154 | { |
5e22e966 | 14155 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 14156 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 14157 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14158 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14159 | int low_set = 0; |
14160 | CORE_ADDR low = 0; | |
14161 | CORE_ADDR high = 0; | |
14162 | int retval; | |
14163 | ||
d0ce17d8 | 14164 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14165 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14166 | { | |
9277c30c | 14167 | if (ranges_pst != NULL) |
3e29f34a MR |
14168 | { |
14169 | CORE_ADDR lowpc; | |
14170 | CORE_ADDR highpc; | |
14171 | ||
79748972 TT |
14172 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14173 | range_beginning + baseaddr) | |
14174 | - baseaddr); | |
14175 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14176 | range_end + baseaddr) | |
14177 | - baseaddr); | |
84685904 | 14178 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 14179 | lowpc, highpc - 1, ranges_pst); |
3e29f34a | 14180 | } |
ff013f42 | 14181 | |
43039443 JK |
14182 | /* FIXME: This is recording everything as a low-high |
14183 | segment of consecutive addresses. We should have a | |
14184 | data structure for discontiguous block ranges | |
14185 | instead. */ | |
14186 | if (! low_set) | |
14187 | { | |
14188 | low = range_beginning; | |
14189 | high = range_end; | |
14190 | low_set = 1; | |
14191 | } | |
14192 | else | |
14193 | { | |
14194 | if (range_beginning < low) | |
14195 | low = range_beginning; | |
14196 | if (range_end > high) | |
14197 | high = range_end; | |
14198 | } | |
5f46c5a5 JK |
14199 | }); |
14200 | if (!retval) | |
14201 | return 0; | |
43039443 JK |
14202 | |
14203 | if (! low_set) | |
14204 | /* If the first entry is an end-of-list marker, the range | |
14205 | describes an empty scope, i.e. no instructions. */ | |
14206 | return 0; | |
14207 | ||
14208 | if (low_return) | |
14209 | *low_return = low; | |
14210 | if (high_return) | |
14211 | *high_return = high; | |
14212 | return 1; | |
14213 | } | |
14214 | ||
3a2b436a JK |
14215 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14216 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14217 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14218 | |
3a2b436a | 14219 | static enum pc_bounds_kind |
af34e669 | 14220 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14221 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14222 | dwarf2_psymtab *pst) |
c906108c | 14223 | { |
976ca316 | 14224 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14225 | struct attribute *attr; |
91da1414 | 14226 | struct attribute *attr_high; |
af34e669 DJ |
14227 | CORE_ADDR low = 0; |
14228 | CORE_ADDR high = 0; | |
e385593e | 14229 | enum pc_bounds_kind ret; |
c906108c | 14230 | |
91da1414 MW |
14231 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14232 | if (attr_high) | |
af34e669 | 14233 | { |
e142c38c | 14234 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14235 | if (attr != nullptr) |
dda83cd7 | 14236 | { |
95f982e5 TT |
14237 | low = attr->as_address (); |
14238 | high = attr_high->as_address (); | |
cd6c91b4 | 14239 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14240 | high += low; |
91da1414 | 14241 | } |
af34e669 DJ |
14242 | else |
14243 | /* Found high w/o low attribute. */ | |
e385593e | 14244 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14245 | |
14246 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14247 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14248 | } |
c906108c | 14249 | else |
af34e669 | 14250 | { |
e142c38c | 14251 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14252 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14253 | { |
2b0c7f41 SM |
14254 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14255 | on DWARF version). */ | |
14256 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14257 | ||
14258 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14259 | this value. */ | |
14260 | if (die->tag != DW_TAG_compile_unit) | |
14261 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14262 | |
af34e669 | 14263 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14264 | .debug_ranges section. */ |
d0ce17d8 CT |
14265 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14266 | die->tag)) | |
e385593e | 14267 | return PC_BOUNDS_INVALID; |
43039443 | 14268 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14269 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14270 | } |
e385593e JK |
14271 | else |
14272 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14273 | } |
c906108c | 14274 | |
48fbe735 | 14275 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14276 | if (high <= low) |
e385593e | 14277 | return PC_BOUNDS_INVALID; |
c906108c SS |
14278 | |
14279 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14280 | eliminate duplicate copies of functions and vtables and such. | |
14281 | The linker will arbitrarily choose one and discard the others. | |
14282 | The AT_*_pc values for such functions refer to local labels in | |
14283 | these sections. If the section from that file was discarded, the | |
14284 | labels are not in the output, so the relocs get a value of 0. | |
14285 | If this is a discarded function, mark the pc bounds as invalid, | |
14286 | so that GDB will ignore it. */ | |
976ca316 | 14287 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14288 | return PC_BOUNDS_INVALID; |
c906108c SS |
14289 | |
14290 | *lowpc = low; | |
96408a79 SA |
14291 | if (highpc) |
14292 | *highpc = high; | |
af34e669 | 14293 | return ret; |
c906108c SS |
14294 | } |
14295 | ||
b084d499 JB |
14296 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14297 | its low and high PC addresses. Do nothing if these addresses could not | |
14298 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14299 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14300 | ||
14301 | static void | |
14302 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14303 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14304 | struct dwarf2_cu *cu) | |
b084d499 JB |
14305 | { |
14306 | CORE_ADDR low, high; | |
14307 | struct die_info *child = die->child; | |
14308 | ||
e385593e | 14309 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14310 | { |
325fac50 PA |
14311 | *lowpc = std::min (*lowpc, low); |
14312 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14313 | } |
14314 | ||
14315 | /* If the language does not allow nested subprograms (either inside | |
14316 | subprograms or lexical blocks), we're done. */ | |
14317 | if (cu->language != language_ada) | |
14318 | return; | |
6e70227d | 14319 | |
b084d499 JB |
14320 | /* Check all the children of the given DIE. If it contains nested |
14321 | subprograms, then check their pc bounds. Likewise, we need to | |
14322 | check lexical blocks as well, as they may also contain subprogram | |
14323 | definitions. */ | |
14324 | while (child && child->tag) | |
14325 | { | |
14326 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14327 | || child->tag == DW_TAG_lexical_block) |
14328 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14329 | child = child->sibling; |
b084d499 JB |
14330 | } |
14331 | } | |
14332 | ||
fae299cd DC |
14333 | /* Get the low and high pc's represented by the scope DIE, and store |
14334 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14335 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14336 | ||
14337 | static void | |
14338 | get_scope_pc_bounds (struct die_info *die, | |
14339 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14340 | struct dwarf2_cu *cu) | |
14341 | { | |
14342 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14343 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14344 | CORE_ADDR current_low, current_high; | |
14345 | ||
3a2b436a | 14346 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14347 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14348 | { |
14349 | best_low = current_low; | |
14350 | best_high = current_high; | |
14351 | } | |
14352 | else | |
14353 | { | |
14354 | struct die_info *child = die->child; | |
14355 | ||
14356 | while (child && child->tag) | |
14357 | { | |
14358 | switch (child->tag) { | |
14359 | case DW_TAG_subprogram: | |
dda83cd7 | 14360 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14361 | break; |
14362 | case DW_TAG_namespace: | |
f55ee35c | 14363 | case DW_TAG_module: |
fae299cd DC |
14364 | /* FIXME: carlton/2004-01-16: Should we do this for |
14365 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14366 | that current GCC's always emit the DIEs corresponding | |
14367 | to definitions of methods of classes as children of a | |
14368 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14369 | the DIEs giving the declarations, which could be | |
14370 | anywhere). But I don't see any reason why the | |
14371 | standards says that they have to be there. */ | |
14372 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14373 | ||
14374 | if (current_low != ((CORE_ADDR) -1)) | |
14375 | { | |
325fac50 PA |
14376 | best_low = std::min (best_low, current_low); |
14377 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14378 | } |
14379 | break; | |
14380 | default: | |
0963b4bd | 14381 | /* Ignore. */ |
fae299cd DC |
14382 | break; |
14383 | } | |
14384 | ||
436c571c | 14385 | child = child->sibling; |
fae299cd DC |
14386 | } |
14387 | } | |
14388 | ||
14389 | *lowpc = best_low; | |
14390 | *highpc = best_high; | |
14391 | } | |
14392 | ||
801e3a5b JB |
14393 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14394 | in DIE. */ | |
380bca97 | 14395 | |
801e3a5b JB |
14396 | static void |
14397 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14398 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14399 | { |
5e22e966 | 14400 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14401 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14402 | struct attribute *attr; |
91da1414 | 14403 | struct attribute *attr_high; |
801e3a5b | 14404 | |
91da1414 MW |
14405 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14406 | if (attr_high) | |
801e3a5b | 14407 | { |
801e3a5b | 14408 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14409 | if (attr != nullptr) |
dda83cd7 | 14410 | { |
95f982e5 TT |
14411 | CORE_ADDR low = attr->as_address (); |
14412 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14413 | |
cd6c91b4 | 14414 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14415 | high += low; |
9a619af0 | 14416 | |
3e29f34a MR |
14417 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14418 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14419 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14420 | } |
801e3a5b JB |
14421 | } |
14422 | ||
14423 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14424 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14425 | { |
2b0c7f41 SM |
14426 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14427 | on DWARF version). */ | |
14428 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14429 | |
2b0c7f41 SM |
14430 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14431 | this value. */ | |
14432 | if (die->tag != DW_TAG_compile_unit) | |
14433 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14434 | |
2d5f09ec | 14435 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14436 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14437 | [&] (CORE_ADDR start, CORE_ADDR end) |
14438 | { | |
58fdfd2c JK |
14439 | start += baseaddr; |
14440 | end += baseaddr; | |
5f46c5a5 JK |
14441 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14442 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14443 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14444 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14445 | }); |
2d5f09ec KB |
14446 | |
14447 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14448 | } |
14449 | } | |
14450 | ||
685b1105 JK |
14451 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14452 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14453 | |
685b1105 JK |
14454 | static void |
14455 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14456 | { |
38360086 | 14457 | int major, minor; |
60d5a603 JK |
14458 | |
14459 | if (cu->producer == NULL) | |
14460 | { | |
14461 | /* For unknown compilers expect their behavior is DWARF version | |
14462 | compliant. | |
14463 | ||
14464 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14465 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14466 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14467 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14468 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14469 | } |
b1ffba5a | 14470 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14471 | { |
38360086 MW |
14472 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14473 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14474 | } |
5230b05a | 14475 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14476 | { |
14477 | cu->producer_is_icc = true; | |
14478 | cu->producer_is_icc_lt_14 = major < 14; | |
14479 | } | |
c258c396 JD |
14480 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14481 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14482 | else |
14483 | { | |
14484 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14485 | compliant. */ | |
60d5a603 JK |
14486 | } |
14487 | ||
9068261f | 14488 | cu->checked_producer = true; |
685b1105 | 14489 | } |
ba919b58 | 14490 | |
685b1105 JK |
14491 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14492 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14493 | during 4.6.0 experimental. */ | |
14494 | ||
9068261f | 14495 | static bool |
685b1105 JK |
14496 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14497 | { | |
14498 | if (!cu->checked_producer) | |
14499 | check_producer (cu); | |
14500 | ||
14501 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14502 | } |
14503 | ||
c258c396 JD |
14504 | |
14505 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14506 | with incorrect is_stmt attributes. */ | |
14507 | ||
14508 | static bool | |
14509 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14510 | { | |
14511 | if (!cu->checked_producer) | |
14512 | check_producer (cu); | |
14513 | ||
14514 | return cu->producer_is_codewarrior; | |
14515 | } | |
14516 | ||
bf23a268 TT |
14517 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14518 | If that attribute is not available, return the appropriate | |
14519 | default. */ | |
60d5a603 JK |
14520 | |
14521 | static enum dwarf_access_attribute | |
bf23a268 | 14522 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14523 | { |
bf23a268 TT |
14524 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14525 | if (attr != nullptr) | |
14526 | { | |
14527 | LONGEST value = attr->constant_value (-1); | |
14528 | if (value == DW_ACCESS_public | |
14529 | || value == DW_ACCESS_protected | |
14530 | || value == DW_ACCESS_private) | |
14531 | return (dwarf_access_attribute) value; | |
14532 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14533 | plongest (value)); | |
14534 | } | |
14535 | ||
60d5a603 JK |
14536 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14537 | { | |
14538 | /* The default DWARF 2 accessibility for members is public, the default | |
14539 | accessibility for inheritance is private. */ | |
14540 | ||
14541 | if (die->tag != DW_TAG_inheritance) | |
14542 | return DW_ACCESS_public; | |
14543 | else | |
14544 | return DW_ACCESS_private; | |
14545 | } | |
14546 | else | |
14547 | { | |
14548 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14549 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14550 | depends on the container kind. */ | |
14551 | ||
14552 | if (die->parent->tag == DW_TAG_class_type) | |
14553 | return DW_ACCESS_private; | |
14554 | else | |
14555 | return DW_ACCESS_public; | |
14556 | } | |
14557 | } | |
14558 | ||
74ac6d43 TT |
14559 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14560 | offset. If the attribute was not found return 0, otherwise return | |
14561 | 1. If it was found but could not properly be handled, set *OFFSET | |
14562 | to 0. */ | |
14563 | ||
14564 | static int | |
14565 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14566 | LONGEST *offset) | |
14567 | { | |
14568 | struct attribute *attr; | |
14569 | ||
14570 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14571 | if (attr != NULL) | |
14572 | { | |
14573 | *offset = 0; | |
14574 | ||
14575 | /* Note that we do not check for a section offset first here. | |
14576 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14577 | so if we see it, we can assume that a constant form is really | |
14578 | a constant and not a section offset. */ | |
cd6c91b4 | 14579 | if (attr->form_is_constant ()) |
0826b30a | 14580 | *offset = attr->constant_value (0); |
cd6c91b4 | 14581 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14582 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14583 | else if (attr->form_is_block ()) |
9d2246fc | 14584 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14585 | else |
14586 | dwarf2_complex_location_expr_complaint (); | |
14587 | ||
14588 | return 1; | |
14589 | } | |
14590 | ||
14591 | return 0; | |
14592 | } | |
14593 | ||
7d79de9a TT |
14594 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14595 | ||
14596 | static void | |
14597 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14598 | struct field *field) | |
14599 | { | |
14600 | struct attribute *attr; | |
14601 | ||
14602 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14603 | if (attr != NULL) | |
14604 | { | |
14605 | if (attr->form_is_constant ()) | |
14606 | { | |
14607 | LONGEST offset = attr->constant_value (0); | |
14608 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14609 | } | |
14610 | else if (attr->form_is_section_offset ()) | |
14611 | dwarf2_complex_location_expr_complaint (); | |
14612 | else if (attr->form_is_block ()) | |
14613 | { | |
14614 | bool handled; | |
9d2246fc | 14615 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14616 | if (handled) |
14617 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14618 | else | |
14619 | { | |
5e22e966 SM |
14620 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14621 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14622 | struct dwarf2_locexpr_baton *dlbaton |
14623 | = XOBNEW (&objfile->objfile_obstack, | |
14624 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14625 | dlbaton->data = attr->as_block ()->data; |
14626 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14627 | /* When using this baton, we want to compute the address |
14628 | of the field, not the value. This is why | |
14629 | is_reference is set to false here. */ | |
14630 | dlbaton->is_reference = false; | |
5e22e966 | 14631 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14632 | dlbaton->per_cu = cu->per_cu; |
14633 | ||
14634 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14635 | } | |
14636 | } | |
14637 | else | |
14638 | dwarf2_complex_location_expr_complaint (); | |
14639 | } | |
14640 | } | |
14641 | ||
c906108c SS |
14642 | /* Add an aggregate field to the field list. */ |
14643 | ||
14644 | static void | |
107d2387 | 14645 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14646 | struct dwarf2_cu *cu) |
6e70227d | 14647 | { |
5e22e966 | 14648 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14649 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14650 | struct nextfield *new_field; |
14651 | struct attribute *attr; | |
14652 | struct field *fp; | |
15d034d0 | 14653 | const char *fieldname = ""; |
c906108c | 14654 | |
7d0ccb61 DJ |
14655 | if (die->tag == DW_TAG_inheritance) |
14656 | { | |
be2daae6 TT |
14657 | fip->baseclasses.emplace_back (); |
14658 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14659 | } |
14660 | else | |
14661 | { | |
be2daae6 TT |
14662 | fip->fields.emplace_back (); |
14663 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14664 | } |
be2daae6 | 14665 | |
9c6a1327 TT |
14666 | new_field->offset = die->sect_off; |
14667 | ||
bf23a268 | 14668 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 14669 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 14670 | fip->non_public_fields = true; |
60d5a603 | 14671 | |
e142c38c | 14672 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14673 | if (attr != nullptr) |
23dca5c3 | 14674 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
14675 | else |
14676 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14677 | |
14678 | fp = &new_field->field; | |
a9a9bd0f | 14679 | |
e142c38c | 14680 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14681 | { |
a9a9bd0f | 14682 | /* Data member other than a C++ static data member. */ |
6e70227d | 14683 | |
c906108c | 14684 | /* Get type of field. */ |
5d14b6e5 | 14685 | fp->set_type (die_type (die, cu)); |
c906108c | 14686 | |
d6a843b5 | 14687 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14688 | |
c906108c | 14689 | /* Get bit size of field (zero if none). */ |
e142c38c | 14690 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14691 | if (attr != nullptr) |
c906108c | 14692 | { |
529908cb | 14693 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
14694 | } |
14695 | else | |
14696 | { | |
14697 | FIELD_BITSIZE (*fp) = 0; | |
14698 | } | |
14699 | ||
14700 | /* Get bit offset of field. */ | |
7d79de9a | 14701 | handle_data_member_location (die, cu, fp); |
e142c38c | 14702 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 14703 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 14704 | { |
d5a22e77 | 14705 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14706 | { |
14707 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
14708 | additional bit offset from the MSB of the containing |
14709 | anonymous object to the MSB of the field. We don't | |
14710 | have to do anything special since we don't need to | |
14711 | know the size of the anonymous object. */ | |
529908cb | 14712 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 14713 | + attr->constant_value (0))); |
c906108c SS |
14714 | } |
14715 | else | |
14716 | { | |
14717 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
14718 | MSB of the anonymous object, subtract off the number of |
14719 | bits from the MSB of the field to the MSB of the | |
14720 | object, and then subtract off the number of bits of | |
14721 | the field itself. The result is the bit offset of | |
14722 | the LSB of the field. */ | |
c906108c | 14723 | int anonymous_size; |
7c184d33 | 14724 | int bit_offset = attr->constant_value (0); |
c906108c | 14725 | |
e142c38c | 14726 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 14727 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
14728 | { |
14729 | /* The size of the anonymous object containing | |
14730 | the bit field is explicit, so use the | |
14731 | indicated size (in bytes). */ | |
7c184d33 | 14732 | anonymous_size = attr->constant_value (0); |
c906108c SS |
14733 | } |
14734 | else | |
14735 | { | |
14736 | /* The size of the anonymous object containing | |
14737 | the bit field must be inferred from the type | |
14738 | attribute of the data member containing the | |
14739 | bit field. */ | |
5d14b6e5 | 14740 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 14741 | } |
f41f5e61 PA |
14742 | SET_FIELD_BITPOS (*fp, |
14743 | (FIELD_BITPOS (*fp) | |
14744 | + anonymous_size * bits_per_byte | |
14745 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14746 | } |
14747 | } | |
da5b30da AA |
14748 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14749 | if (attr != NULL) | |
14750 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14751 | + attr->constant_value (0))); |
c906108c SS |
14752 | |
14753 | /* Get name of field. */ | |
39cbfefa DJ |
14754 | fieldname = dwarf2_name (die, cu); |
14755 | if (fieldname == NULL) | |
14756 | fieldname = ""; | |
d8151005 DJ |
14757 | |
14758 | /* The name is already allocated along with this objfile, so we don't | |
14759 | need to duplicate it for the type. */ | |
14760 | fp->name = fieldname; | |
c906108c SS |
14761 | |
14762 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 14763 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14764 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14765 | { |
d48cc9dd | 14766 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 14767 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 14768 | fip->non_public_fields = true; |
c906108c SS |
14769 | } |
14770 | } | |
a9a9bd0f | 14771 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14772 | { |
a9a9bd0f DC |
14773 | /* C++ static member. */ |
14774 | ||
14775 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14776 | is a declaration, but all versions of G++ as of this writing | |
14777 | (so through at least 3.2.1) incorrectly generate | |
14778 | DW_TAG_variable tags. */ | |
6e70227d | 14779 | |
ff355380 | 14780 | const char *physname; |
c906108c | 14781 | |
a9a9bd0f | 14782 | /* Get name of field. */ |
39cbfefa DJ |
14783 | fieldname = dwarf2_name (die, cu); |
14784 | if (fieldname == NULL) | |
c906108c SS |
14785 | return; |
14786 | ||
254e6b9e | 14787 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14788 | if (attr |
14789 | /* Only create a symbol if this is an external value. | |
14790 | new_symbol checks this and puts the value in the global symbol | |
14791 | table, which we want. If it is not external, new_symbol | |
14792 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14793 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14794 | { |
14795 | /* A static const member, not much different than an enum as far as | |
14796 | we're concerned, except that we can support more types. */ | |
14797 | new_symbol (die, NULL, cu); | |
14798 | } | |
14799 | ||
2df3850c | 14800 | /* Get physical name. */ |
ff355380 | 14801 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14802 | |
d8151005 DJ |
14803 | /* The name is already allocated along with this objfile, so we don't |
14804 | need to duplicate it for the type. */ | |
14805 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 14806 | fp->set_type (die_type (die, cu)); |
d8151005 | 14807 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14808 | } |
14809 | else if (die->tag == DW_TAG_inheritance) | |
14810 | { | |
74ac6d43 | 14811 | /* C++ base class field. */ |
7d79de9a | 14812 | handle_data_member_location (die, cu, fp); |
c906108c | 14813 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
14814 | fp->set_type (die_type (die, cu)); |
14815 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 14816 | } |
2ddeaf8a TT |
14817 | else |
14818 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14819 | } |
14820 | ||
883fd55a KS |
14821 | /* Can the type given by DIE define another type? */ |
14822 | ||
14823 | static bool | |
14824 | type_can_define_types (const struct die_info *die) | |
14825 | { | |
14826 | switch (die->tag) | |
14827 | { | |
14828 | case DW_TAG_typedef: | |
14829 | case DW_TAG_class_type: | |
14830 | case DW_TAG_structure_type: | |
14831 | case DW_TAG_union_type: | |
14832 | case DW_TAG_enumeration_type: | |
14833 | return true; | |
14834 | ||
14835 | default: | |
14836 | return false; | |
14837 | } | |
14838 | } | |
14839 | ||
14840 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14841 | |
14842 | static void | |
883fd55a KS |
14843 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14844 | struct dwarf2_cu *cu) | |
6e70227d | 14845 | { |
be2daae6 TT |
14846 | struct decl_field fp; |
14847 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14848 | |
883fd55a | 14849 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14850 | |
883fd55a | 14851 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14852 | fp.name = dwarf2_name (die, cu); |
14853 | fp.type = read_type_die (die, cu); | |
98751a41 | 14854 | |
c191a687 | 14855 | /* Save accessibility. */ |
bf23a268 | 14856 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
14857 | switch (accessibility) |
14858 | { | |
14859 | case DW_ACCESS_public: | |
14860 | /* The assumed value if neither private nor protected. */ | |
14861 | break; | |
14862 | case DW_ACCESS_private: | |
be2daae6 | 14863 | fp.is_private = 1; |
c191a687 KS |
14864 | break; |
14865 | case DW_ACCESS_protected: | |
be2daae6 | 14866 | fp.is_protected = 1; |
c191a687 | 14867 | break; |
c191a687 KS |
14868 | } |
14869 | ||
883fd55a | 14870 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14871 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14872 | else |
be2daae6 | 14873 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14874 | } |
14875 | ||
9c6a1327 TT |
14876 | /* A convenience typedef that's used when finding the discriminant |
14877 | field for a variant part. */ | |
1b95cdb7 SM |
14878 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14879 | offset_map_type; | |
9c6a1327 TT |
14880 | |
14881 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14882 | where the results will be stored. VARIANT is the variant to | |
14883 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14884 | or unsigned. */ | |
14885 | ||
14886 | static const gdb::array_view<discriminant_range> | |
14887 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14888 | bool is_unsigned) | |
14889 | { | |
14890 | std::vector<discriminant_range> ranges; | |
14891 | ||
14892 | if (variant.default_branch) | |
14893 | return {}; | |
14894 | ||
14895 | if (variant.discr_list_data == nullptr) | |
14896 | { | |
14897 | discriminant_range r | |
14898 | = {variant.discriminant_value, variant.discriminant_value}; | |
14899 | ranges.push_back (r); | |
14900 | } | |
14901 | else | |
14902 | { | |
14903 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14904 | variant.discr_list_data->size); | |
14905 | while (!data.empty ()) | |
14906 | { | |
14907 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14908 | { | |
14909 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14910 | break; | |
14911 | } | |
14912 | bool is_range = data[0] == DW_DSC_range; | |
14913 | data = data.slice (1); | |
14914 | ||
14915 | ULONGEST low, high; | |
14916 | unsigned int bytes_read; | |
14917 | ||
14918 | if (data.empty ()) | |
14919 | { | |
14920 | complaint (_("DW_AT_discr_list missing low value")); | |
14921 | break; | |
14922 | } | |
14923 | if (is_unsigned) | |
14924 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14925 | else | |
14926 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14927 | &bytes_read); | |
14928 | data = data.slice (bytes_read); | |
14929 | ||
14930 | if (is_range) | |
14931 | { | |
14932 | if (data.empty ()) | |
14933 | { | |
14934 | complaint (_("DW_AT_discr_list missing high value")); | |
14935 | break; | |
14936 | } | |
14937 | if (is_unsigned) | |
14938 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14939 | &bytes_read); | |
14940 | else | |
14941 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14942 | &bytes_read); | |
14943 | data = data.slice (bytes_read); | |
14944 | } | |
14945 | else | |
14946 | high = low; | |
14947 | ||
14948 | ranges.push_back ({ low, high }); | |
14949 | } | |
14950 | } | |
14951 | ||
14952 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14953 | ranges.size ()); | |
14954 | std::copy (ranges.begin (), ranges.end (), result); | |
14955 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14956 | } | |
14957 | ||
14958 | static const gdb::array_view<variant_part> create_variant_parts | |
14959 | (struct obstack *obstack, | |
14960 | const offset_map_type &offset_map, | |
14961 | struct field_info *fi, | |
14962 | const std::vector<variant_part_builder> &variant_parts); | |
14963 | ||
14964 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14965 | the variant to fill in. OBSTACK is where any needed allocations | |
14966 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14967 | fields for the type. FI describes the fields of the type we're | |
14968 | processing. FIELD is the variant field we're converting. */ | |
14969 | ||
14970 | static void | |
14971 | create_one_variant (variant &result, struct obstack *obstack, | |
14972 | const offset_map_type &offset_map, | |
14973 | struct field_info *fi, const variant_field &field) | |
14974 | { | |
14975 | result.discriminants = convert_variant_range (obstack, field, false); | |
14976 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14977 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14978 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14979 | field.variant_parts); | |
14980 | } | |
14981 | ||
14982 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14983 | is the variant part to fill in. OBSTACK is where any needed | |
14984 | allocations will be done. OFFSET_MAP holds the mapping from | |
14985 | section offsets to fields for the type. FI describes the fields of | |
14986 | the type we're processing. BUILDER is the variant part to be | |
14987 | converted. */ | |
14988 | ||
14989 | static void | |
14990 | create_one_variant_part (variant_part &result, | |
14991 | struct obstack *obstack, | |
14992 | const offset_map_type &offset_map, | |
14993 | struct field_info *fi, | |
14994 | const variant_part_builder &builder) | |
14995 | { | |
14996 | auto iter = offset_map.find (builder.discriminant_offset); | |
14997 | if (iter == offset_map.end ()) | |
14998 | { | |
14999 | result.discriminant_index = -1; | |
15000 | /* Doesn't matter. */ | |
15001 | result.is_unsigned = false; | |
15002 | } | |
15003 | else | |
15004 | { | |
15005 | result.discriminant_index = iter->second; | |
15006 | result.is_unsigned | |
c6d940a9 | 15007 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15008 | } |
15009 | ||
15010 | size_t n = builder.variants.size (); | |
15011 | variant *output = new (obstack) variant[n]; | |
15012 | for (size_t i = 0; i < n; ++i) | |
15013 | create_one_variant (output[i], obstack, offset_map, fi, | |
15014 | builder.variants[i]); | |
15015 | ||
15016 | result.variants = gdb::array_view<variant> (output, n); | |
15017 | } | |
15018 | ||
15019 | /* Create a vector of variant parts that can be attached to a type. | |
15020 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15021 | holds the mapping from section offsets to fields for the type. FI | |
15022 | describes the fields of the type we're processing. VARIANT_PARTS | |
15023 | is the vector to convert. */ | |
15024 | ||
15025 | static const gdb::array_view<variant_part> | |
15026 | create_variant_parts (struct obstack *obstack, | |
15027 | const offset_map_type &offset_map, | |
15028 | struct field_info *fi, | |
15029 | const std::vector<variant_part_builder> &variant_parts) | |
15030 | { | |
15031 | if (variant_parts.empty ()) | |
15032 | return {}; | |
15033 | ||
15034 | size_t n = variant_parts.size (); | |
15035 | variant_part *result = new (obstack) variant_part[n]; | |
15036 | for (size_t i = 0; i < n; ++i) | |
15037 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15038 | variant_parts[i]); | |
15039 | ||
15040 | return gdb::array_view<variant_part> (result, n); | |
15041 | } | |
15042 | ||
15043 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15044 | done. */ | |
15045 | ||
15046 | static void | |
15047 | add_variant_property (struct field_info *fip, struct type *type, | |
15048 | struct dwarf2_cu *cu) | |
15049 | { | |
15050 | /* Map section offsets of fields to their field index. Note the | |
15051 | field index here does not take the number of baseclasses into | |
15052 | account. */ | |
15053 | offset_map_type offset_map; | |
15054 | for (int i = 0; i < fip->fields.size (); ++i) | |
15055 | offset_map[fip->fields[i].offset] = i; | |
15056 | ||
5e22e966 | 15057 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15058 | gdb::array_view<variant_part> parts |
15059 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15060 | fip->variant_parts); | |
15061 | ||
15062 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15063 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15064 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15065 | sizeof (parts))); | |
9c6a1327 | 15066 | |
5c54719c | 15067 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15068 | } |
15069 | ||
c906108c SS |
15070 | /* Create the vector of fields, and attach it to the type. */ |
15071 | ||
15072 | static void | |
fba45db2 | 15073 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15074 | struct dwarf2_cu *cu) |
c906108c | 15075 | { |
317f7127 | 15076 | int nfields = fip->nfields (); |
c906108c SS |
15077 | |
15078 | /* Record the field count, allocate space for the array of fields, | |
15079 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15080 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15081 | type->set_fields |
15082 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15083 | |
b4ba55a1 | 15084 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15085 | { |
15086 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15087 | ||
15088 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15089 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15090 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15091 | ||
15092 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15093 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15094 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15095 | ||
774b6a14 TT |
15096 | TYPE_FIELD_IGNORE_BITS (type) = |
15097 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15098 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15099 | } |
15100 | ||
15101 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15102 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15103 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15104 | { |
be2daae6 | 15105 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15106 | unsigned char *pointer; |
c906108c SS |
15107 | |
15108 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15109 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15110 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15111 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15112 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15113 | } |
15114 | ||
9c6a1327 TT |
15115 | if (!fip->variant_parts.empty ()) |
15116 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15117 | |
be2daae6 TT |
15118 | /* Copy the saved-up fields into the field vector. */ |
15119 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15120 | { |
be2daae6 TT |
15121 | struct nextfield &field |
15122 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15123 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15124 | |
ceacbf6e | 15125 | type->field (i) = field.field; |
be2daae6 | 15126 | switch (field.accessibility) |
c906108c | 15127 | { |
c5aa993b | 15128 | case DW_ACCESS_private: |
b4ba55a1 | 15129 | if (cu->language != language_ada) |
be2daae6 | 15130 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15131 | break; |
c906108c | 15132 | |
c5aa993b | 15133 | case DW_ACCESS_protected: |
b4ba55a1 | 15134 | if (cu->language != language_ada) |
be2daae6 | 15135 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15136 | break; |
c906108c | 15137 | |
c5aa993b JM |
15138 | case DW_ACCESS_public: |
15139 | break; | |
c906108c | 15140 | |
c5aa993b JM |
15141 | default: |
15142 | /* Unknown accessibility. Complain and treat it as public. */ | |
15143 | { | |
b98664d3 | 15144 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15145 | field.accessibility); |
c5aa993b JM |
15146 | } |
15147 | break; | |
c906108c | 15148 | } |
be2daae6 | 15149 | if (i < fip->baseclasses.size ()) |
c906108c | 15150 | { |
be2daae6 | 15151 | switch (field.virtuality) |
c906108c | 15152 | { |
c5aa993b JM |
15153 | case DW_VIRTUALITY_virtual: |
15154 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15155 | if (cu->language == language_ada) |
a73c6dcd | 15156 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15157 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15158 | break; |
c906108c SS |
15159 | } |
15160 | } | |
c906108c SS |
15161 | } |
15162 | } | |
15163 | ||
7d27a96d TT |
15164 | /* Return true if this member function is a constructor, false |
15165 | otherwise. */ | |
15166 | ||
15167 | static int | |
15168 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15169 | { | |
15170 | const char *fieldname; | |
fe978cb0 | 15171 | const char *type_name; |
7d27a96d TT |
15172 | int len; |
15173 | ||
15174 | if (die->parent == NULL) | |
15175 | return 0; | |
15176 | ||
15177 | if (die->parent->tag != DW_TAG_structure_type | |
15178 | && die->parent->tag != DW_TAG_union_type | |
15179 | && die->parent->tag != DW_TAG_class_type) | |
15180 | return 0; | |
15181 | ||
15182 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15183 | type_name = dwarf2_name (die->parent, cu); |
15184 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15185 | return 0; |
15186 | ||
15187 | len = strlen (fieldname); | |
fe978cb0 PA |
15188 | return (strncmp (fieldname, type_name, len) == 0 |
15189 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15190 | } |
15191 | ||
c906108c SS |
15192 | /* Add a member function to the proper fieldlist. */ |
15193 | ||
15194 | static void | |
107d2387 | 15195 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15196 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15197 | { |
5e22e966 | 15198 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15199 | struct attribute *attr; |
c906108c | 15200 | int i; |
be2daae6 | 15201 | struct fnfieldlist *flp = nullptr; |
c906108c | 15202 | struct fn_field *fnp; |
15d034d0 | 15203 | const char *fieldname; |
f792889a | 15204 | struct type *this_type; |
c906108c | 15205 | |
b4ba55a1 | 15206 | if (cu->language == language_ada) |
a73c6dcd | 15207 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15208 | |
2df3850c | 15209 | /* Get name of member function. */ |
39cbfefa DJ |
15210 | fieldname = dwarf2_name (die, cu); |
15211 | if (fieldname == NULL) | |
2df3850c | 15212 | return; |
c906108c | 15213 | |
c906108c | 15214 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15215 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15216 | { |
27bfe10e | 15217 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15218 | { |
15219 | flp = &fip->fnfieldlists[i]; | |
15220 | break; | |
15221 | } | |
c906108c SS |
15222 | } |
15223 | ||
be2daae6 TT |
15224 | /* Create a new fnfieldlist if necessary. */ |
15225 | if (flp == nullptr) | |
c906108c | 15226 | { |
be2daae6 TT |
15227 | fip->fnfieldlists.emplace_back (); |
15228 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15229 | flp->name = fieldname; |
be2daae6 | 15230 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15231 | } |
15232 | ||
be2daae6 TT |
15233 | /* Create a new member function field and add it to the vector of |
15234 | fnfieldlists. */ | |
15235 | flp->fnfields.emplace_back (); | |
15236 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15237 | |
15238 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15239 | if (cu->language == language_cplus) |
be2daae6 TT |
15240 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15241 | die, cu); | |
3da10d80 KS |
15242 | else |
15243 | { | |
1d06ead6 | 15244 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15245 | fnp->physname = physname ? physname : ""; |
15246 | } | |
15247 | ||
c906108c | 15248 | fnp->type = alloc_type (objfile); |
f792889a | 15249 | this_type = read_type_die (die, cu); |
78134374 | 15250 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15251 | { |
1f704f76 | 15252 | int nparams = this_type->num_fields (); |
c906108c | 15253 | |
f792889a | 15254 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15255 | of the method itself (TYPE_CODE_METHOD). */ |
15256 | smash_to_method_type (fnp->type, type, | |
f792889a | 15257 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15258 | this_type->fields (), |
1f704f76 | 15259 | this_type->num_fields (), |
a409645d | 15260 | this_type->has_varargs ()); |
c906108c SS |
15261 | |
15262 | /* Handle static member functions. | |
dda83cd7 SM |
15263 | Dwarf2 has no clean way to discern C++ static and non-static |
15264 | member functions. G++ helps GDB by marking the first | |
15265 | parameter for non-static member functions (which is the this | |
15266 | pointer) as artificial. We obtain this information from | |
15267 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15268 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15269 | fnp->voffset = VOFFSET_STATIC; |
15270 | } | |
15271 | else | |
b98664d3 | 15272 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15273 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15274 | |
15275 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15276 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15277 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15278 | |
3e43a32a MS |
15279 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15280 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15281 | |
15282 | /* Get accessibility. */ | |
bf23a268 | 15283 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15284 | switch (accessibility) |
c906108c | 15285 | { |
60d5a603 JK |
15286 | case DW_ACCESS_private: |
15287 | fnp->is_private = 1; | |
15288 | break; | |
15289 | case DW_ACCESS_protected: | |
15290 | fnp->is_protected = 1; | |
15291 | break; | |
c906108c SS |
15292 | } |
15293 | ||
b02dede2 | 15294 | /* Check for artificial methods. */ |
e142c38c | 15295 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15296 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15297 | fnp->is_artificial = 1; |
15298 | ||
e35000a7 TBA |
15299 | /* Check for defaulted methods. */ |
15300 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15301 | if (attr != nullptr) |
15302 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15303 | |
15304 | /* Check for deleted methods. */ | |
15305 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15306 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15307 | fnp->is_deleted = 1; |
15308 | ||
7d27a96d TT |
15309 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15310 | ||
0d564a31 | 15311 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15312 | function. For older versions of GCC, this is an offset in the |
15313 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15314 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15315 | to the object address. */ |
15316 | ||
e142c38c | 15317 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15318 | if (attr != nullptr) |
8e19ed76 | 15319 | { |
9d2246fc | 15320 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15321 | { |
9d2246fc TT |
15322 | struct dwarf_block *block = attr->as_block (); |
15323 | ||
15324 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15325 | { |
15326 | /* Old-style GCC. */ | |
9d2246fc | 15327 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15328 | } |
9d2246fc TT |
15329 | else if (block->data[0] == DW_OP_deref |
15330 | || (block->size > 1 | |
15331 | && block->data[0] == DW_OP_deref_size | |
15332 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15333 | { |
9d2246fc | 15334 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15335 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15336 | dwarf2_complex_location_expr_complaint (); | |
15337 | else | |
15338 | fnp->voffset /= cu->header.addr_size; | |
15339 | fnp->voffset += 2; | |
15340 | } | |
15341 | else | |
15342 | dwarf2_complex_location_expr_complaint (); | |
15343 | ||
15344 | if (!fnp->fcontext) | |
7e993ebf KS |
15345 | { |
15346 | /* If there is no `this' field and no DW_AT_containing_type, | |
15347 | we cannot actually find a base class context for the | |
15348 | vtable! */ | |
1f704f76 | 15349 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15350 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15351 | { | |
b98664d3 | 15352 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15353 | "function \"%s\" (offset %s)"), |
15354 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15355 | } |
15356 | else | |
15357 | { | |
15358 | fnp->fcontext | |
940da03e | 15359 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15360 | } |
15361 | } | |
aec5aa8b | 15362 | } |
cd6c91b4 | 15363 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15364 | { |
4d3c2250 | 15365 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15366 | } |
8e19ed76 | 15367 | else |
dda83cd7 | 15368 | { |
4d3c2250 KB |
15369 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15370 | fieldname); | |
dda83cd7 | 15371 | } |
0d564a31 | 15372 | } |
d48cc9dd DJ |
15373 | else |
15374 | { | |
15375 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15376 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15377 | { |
15378 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15379 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15380 | "but the vtable offset is not specified"), |
9d8780f0 | 15381 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15382 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15383 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15384 | } | |
15385 | } | |
c906108c SS |
15386 | } |
15387 | ||
15388 | /* Create the vector of member function fields, and attach it to the type. */ | |
15389 | ||
15390 | static void | |
fba45db2 | 15391 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15392 | struct dwarf2_cu *cu) |
c906108c | 15393 | { |
b4ba55a1 | 15394 | if (cu->language == language_ada) |
a73c6dcd | 15395 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15396 | |
c906108c SS |
15397 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15398 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15399 | TYPE_ALLOC (type, |
15400 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15401 | |
be2daae6 | 15402 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15403 | { |
be2daae6 | 15404 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15405 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15406 | |
be2daae6 TT |
15407 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15408 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15409 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15410 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15411 | ||
15412 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15413 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15414 | } |
15415 | ||
be2daae6 | 15416 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15417 | } |
15418 | ||
1168df01 JB |
15419 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15420 | language, zero otherwise. */ | |
15421 | static int | |
15422 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15423 | { | |
15424 | static const char vptr[] = "_vptr"; | |
15425 | ||
9c37b5ae TT |
15426 | /* Look for the C++ form of the vtable. */ |
15427 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15428 | return 1; |
15429 | ||
15430 | return 0; | |
15431 | } | |
15432 | ||
c0dd20ea | 15433 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15434 | functions, with the ABI-specified layout. If TYPE describes |
15435 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15436 | |
15437 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15438 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15439 | |
0b92b5bb TT |
15440 | static void |
15441 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15442 | { |
09e2d7c7 | 15443 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15444 | |
15445 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15446 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15447 | return; |
c0dd20ea DJ |
15448 | |
15449 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15450 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15451 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15452 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15453 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15454 | return; | |
c0dd20ea DJ |
15455 | |
15456 | /* Find the type of the method. */ | |
940da03e | 15457 | pfn_type = type->field (0).type (); |
c0dd20ea | 15458 | if (pfn_type == NULL |
78134374 SM |
15459 | || pfn_type->code () != TYPE_CODE_PTR |
15460 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15461 | return; |
c0dd20ea DJ |
15462 | |
15463 | /* Look for the "this" argument. */ | |
15464 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15465 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15466 | /* || pfn_type->field (0).type () == NULL */ |
15467 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15468 | return; |
c0dd20ea | 15469 | |
940da03e | 15470 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15471 | new_type = alloc_type (objfile); |
09e2d7c7 | 15472 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15473 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15474 | pfn_type->has_varargs ()); |
0b92b5bb | 15475 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15476 | } |
1168df01 | 15477 | |
e26624c6 TT |
15478 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15479 | requires rewriting, then copy it and return the updated copy. | |
15480 | Otherwise return nullptr. */ | |
15481 | ||
15482 | static struct type * | |
15483 | rewrite_array_type (struct type *type) | |
15484 | { | |
15485 | if (type->code () != TYPE_CODE_ARRAY) | |
15486 | return nullptr; | |
15487 | ||
15488 | struct type *index_type = type->index_type (); | |
15489 | range_bounds *current_bounds = index_type->bounds (); | |
15490 | ||
15491 | /* Handle multi-dimensional arrays. */ | |
15492 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15493 | if (new_target == nullptr) | |
15494 | { | |
15495 | /* Maybe we don't need to rewrite this array. */ | |
15496 | if (current_bounds->low.kind () == PROP_CONST | |
15497 | && current_bounds->high.kind () == PROP_CONST) | |
15498 | return nullptr; | |
15499 | } | |
15500 | ||
15501 | /* Either the target type was rewritten, or the bounds have to be | |
15502 | updated. Either way we want to copy the type and update | |
15503 | everything. */ | |
15504 | struct type *copy = copy_type (type); | |
15505 | int nfields = copy->num_fields (); | |
15506 | field *new_fields | |
15507 | = ((struct field *) TYPE_ZALLOC (copy, | |
15508 | nfields * sizeof (struct field))); | |
15509 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15510 | copy->set_fields (new_fields); | |
15511 | if (new_target != nullptr) | |
15512 | TYPE_TARGET_TYPE (copy) = new_target; | |
15513 | ||
15514 | struct type *index_copy = copy_type (index_type); | |
15515 | range_bounds *bounds | |
15516 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15517 | sizeof (range_bounds)); | |
15518 | *bounds = *current_bounds; | |
15519 | bounds->low.set_const_val (1); | |
15520 | bounds->high.set_const_val (0); | |
15521 | index_copy->set_bounds (bounds); | |
15522 | copy->set_index_type (index_copy); | |
15523 | ||
15524 | return copy; | |
15525 | } | |
15526 | ||
57567375 TT |
15527 | /* While some versions of GCC will generate complicated DWARF for an |
15528 | array (see quirk_ada_thick_pointer), more recent versions were | |
15529 | modified to emit an explicit thick pointer structure. However, in | |
15530 | this case, the array still has DWARF expressions for its ranges, | |
15531 | and these must be ignored. */ | |
15532 | ||
15533 | static void | |
15534 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15535 | struct type *type) | |
15536 | { | |
15537 | gdb_assert (cu->language == language_ada); | |
15538 | ||
15539 | /* Check for a structure with two children. */ | |
15540 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15541 | return; | |
15542 | ||
15543 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15544 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15545 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15546 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15547 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15548 | return; | |
15549 | ||
15550 | /* Make sure we're looking at a pointer to an array. */ | |
15551 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15552 | return; | |
57567375 | 15553 | |
e26624c6 TT |
15554 | /* The Ada code already knows how to handle these types, so all that |
15555 | we need to do is turn the bounds into static bounds. However, we | |
15556 | don't want to rewrite existing array or index types in-place, | |
15557 | because those may be referenced in other contexts where this | |
15558 | rewriting is undesirable. */ | |
15559 | struct type *new_ary_type | |
15560 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15561 | if (new_ary_type != nullptr) | |
15562 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15563 | } |
15564 | ||
2b4424c3 TT |
15565 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15566 | appropriate error checking and issuing complaints if there is a | |
15567 | problem. */ | |
15568 | ||
15569 | static ULONGEST | |
15570 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15571 | { | |
15572 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15573 | ||
15574 | if (attr == nullptr) | |
15575 | return 0; | |
15576 | ||
cd6c91b4 | 15577 | if (!attr->form_is_constant ()) |
2b4424c3 | 15578 | { |
b98664d3 | 15579 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15580 | " - DIE at %s [in module %s]"), |
15581 | sect_offset_str (die->sect_off), | |
5e22e966 | 15582 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15583 | return 0; |
15584 | } | |
15585 | ||
529908cb TT |
15586 | LONGEST val = attr->constant_value (0); |
15587 | if (val < 0) | |
2b4424c3 | 15588 | { |
529908cb TT |
15589 | complaint (_("DW_AT_alignment value must not be negative" |
15590 | " - DIE at %s [in module %s]"), | |
15591 | sect_offset_str (die->sect_off), | |
15592 | objfile_name (cu->per_objfile->objfile)); | |
15593 | return 0; | |
2b4424c3 | 15594 | } |
529908cb | 15595 | ULONGEST align = val; |
2b4424c3 TT |
15596 | |
15597 | if (align == 0) | |
15598 | { | |
b98664d3 | 15599 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15600 | " - DIE at %s [in module %s]"), |
15601 | sect_offset_str (die->sect_off), | |
5e22e966 | 15602 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15603 | return 0; |
15604 | } | |
15605 | if ((align & (align - 1)) != 0) | |
15606 | { | |
b98664d3 | 15607 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15608 | " - DIE at %s [in module %s]"), |
15609 | sect_offset_str (die->sect_off), | |
5e22e966 | 15610 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15611 | return 0; |
15612 | } | |
15613 | ||
15614 | return align; | |
15615 | } | |
15616 | ||
15617 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15618 | the alignment for TYPE. */ | |
15619 | ||
15620 | static void | |
15621 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15622 | struct type *type) | |
15623 | { | |
15624 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15625 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15626 | " - DIE at %s [in module %s]"), |
15627 | sect_offset_str (die->sect_off), | |
5e22e966 | 15628 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15629 | } |
685b1105 | 15630 | |
e35000a7 TBA |
15631 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15632 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15633 | ||
15634 | static bool | |
15635 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15636 | { | |
15637 | switch (value) | |
15638 | { | |
15639 | case DW_CC_normal: | |
15640 | case DW_CC_pass_by_reference: | |
15641 | case DW_CC_pass_by_value: | |
15642 | return true; | |
15643 | ||
15644 | default: | |
15645 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15646 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15647 | return false; |
15648 | } | |
15649 | } | |
15650 | ||
d0922fcf TBA |
15651 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15652 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15653 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15654 | ||
15655 | static bool | |
15656 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15657 | { | |
15658 | switch (value) | |
15659 | { | |
15660 | case DW_CC_normal: | |
15661 | case DW_CC_program: | |
15662 | case DW_CC_nocall: | |
15663 | return true; | |
15664 | ||
15665 | case DW_CC_GNU_renesas_sh: | |
15666 | case DW_CC_GNU_borland_fastcall_i386: | |
15667 | case DW_CC_GDB_IBM_OpenCL: | |
15668 | return true; | |
15669 | ||
15670 | default: | |
15671 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15672 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15673 | return false; |
15674 | } | |
15675 | } | |
15676 | ||
c906108c | 15677 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15678 | (definition) to create a type for the structure or union. Fill in |
15679 | the type's name and general properties; the members will not be | |
83655187 DE |
15680 | processed until process_structure_scope. A symbol table entry for |
15681 | the type will also not be done until process_structure_scope (assuming | |
15682 | the type has a name). | |
c906108c | 15683 | |
c767944b DJ |
15684 | NOTE: we need to call these functions regardless of whether or not the |
15685 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15686 | structure or union. This gets the type entered into our set of |
83655187 | 15687 | user defined types. */ |
c906108c | 15688 | |
f792889a | 15689 | static struct type * |
134d01f1 | 15690 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15691 | { |
5e22e966 | 15692 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15693 | struct type *type; |
15694 | struct attribute *attr; | |
15d034d0 | 15695 | const char *name; |
c906108c | 15696 | |
348e048f DE |
15697 | /* If the definition of this type lives in .debug_types, read that type. |
15698 | Don't follow DW_AT_specification though, that will take us back up | |
15699 | the chain and we want to go down. */ | |
052c8bb8 | 15700 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15701 | if (attr != nullptr) |
348e048f | 15702 | { |
ac9ec31b | 15703 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15704 | |
ac9ec31b | 15705 | /* The type's CU may not be the same as CU. |
02142a6c | 15706 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15707 | return set_die_type (die, type, cu); |
15708 | } | |
15709 | ||
c0dd20ea | 15710 | type = alloc_type (objfile); |
c906108c | 15711 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15712 | |
39cbfefa DJ |
15713 | name = dwarf2_name (die, cu); |
15714 | if (name != NULL) | |
c906108c | 15715 | { |
987504bb | 15716 | if (cu->language == language_cplus |
c44af4eb TT |
15717 | || cu->language == language_d |
15718 | || cu->language == language_rust) | |
63d06c5c | 15719 | { |
15d034d0 | 15720 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15721 | |
15722 | /* dwarf2_full_name might have already finished building the DIE's | |
15723 | type. If so, there is no need to continue. */ | |
15724 | if (get_die_type (die, cu) != NULL) | |
15725 | return get_die_type (die, cu); | |
15726 | ||
d0e39ea2 | 15727 | type->set_name (full_name); |
63d06c5c DC |
15728 | } |
15729 | else | |
15730 | { | |
d8151005 DJ |
15731 | /* The name is already allocated along with this objfile, so |
15732 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15733 | type->set_name (name); |
63d06c5c | 15734 | } |
c906108c SS |
15735 | } |
15736 | ||
15737 | if (die->tag == DW_TAG_structure_type) | |
15738 | { | |
67607e24 | 15739 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15740 | } |
15741 | else if (die->tag == DW_TAG_union_type) | |
15742 | { | |
67607e24 | 15743 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15744 | } |
15745 | else | |
15746 | { | |
67607e24 | 15747 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15748 | } |
15749 | ||
0cc2414c | 15750 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
aa70e35c | 15751 | type->set_is_declared_class (true); |
0cc2414c | 15752 | |
e35000a7 TBA |
15753 | /* Store the calling convention in the type if it's available in |
15754 | the die. Otherwise the calling convention remains set to | |
15755 | the default value DW_CC_normal. */ | |
15756 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15757 | if (attr != nullptr | |
529908cb | 15758 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
15759 | { |
15760 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15761 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 15762 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
15763 | } |
15764 | ||
e142c38c | 15765 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15766 | if (attr != nullptr) |
c906108c | 15767 | { |
cd6c91b4 | 15768 | if (attr->form_is_constant ()) |
dda83cd7 | 15769 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
15770 | else |
15771 | { | |
f8e89861 | 15772 | struct dynamic_prop prop; |
293e7e51 | 15773 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15774 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 15775 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 15776 | } |
c906108c SS |
15777 | } |
15778 | else | |
15779 | { | |
15780 | TYPE_LENGTH (type) = 0; | |
15781 | } | |
15782 | ||
2b4424c3 TT |
15783 | maybe_set_alignment (cu, die, type); |
15784 | ||
5230b05a | 15785 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15786 | { |
5230b05a WT |
15787 | /* ICC<14 does not output the required DW_AT_declaration on |
15788 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 15789 | type->set_is_stub (true); |
685b1105 JK |
15790 | } |
15791 | else | |
9baccff6 | 15792 | type->set_stub_is_supported (true); |
685b1105 | 15793 | |
dc718098 | 15794 | if (die_is_declaration (die, cu)) |
b4b73759 | 15795 | type->set_is_stub (true); |
a6c727b2 DJ |
15796 | else if (attr == NULL && die->child == NULL |
15797 | && producer_is_realview (cu->producer)) | |
15798 | /* RealView does not output the required DW_AT_declaration | |
15799 | on incomplete types. */ | |
b4b73759 | 15800 | type->set_is_stub (true); |
dc718098 | 15801 | |
c906108c SS |
15802 | /* We need to add the type field to the die immediately so we don't |
15803 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15804 | type within the structure itself. */ |
1c379e20 | 15805 | set_die_type (die, type, cu); |
c906108c | 15806 | |
7e314c57 JK |
15807 | /* set_die_type should be already done. */ |
15808 | set_descriptive_type (type, die, cu); | |
15809 | ||
c767944b DJ |
15810 | return type; |
15811 | } | |
15812 | ||
9c6a1327 TT |
15813 | static void handle_struct_member_die |
15814 | (struct die_info *child_die, | |
15815 | struct type *type, | |
15816 | struct field_info *fi, | |
15817 | std::vector<struct symbol *> *template_args, | |
15818 | struct dwarf2_cu *cu); | |
15819 | ||
15820 | /* A helper for handle_struct_member_die that handles | |
15821 | DW_TAG_variant_part. */ | |
15822 | ||
15823 | static void | |
15824 | handle_variant_part (struct die_info *die, struct type *type, | |
15825 | struct field_info *fi, | |
15826 | std::vector<struct symbol *> *template_args, | |
15827 | struct dwarf2_cu *cu) | |
15828 | { | |
15829 | variant_part_builder *new_part; | |
15830 | if (fi->current_variant_part == nullptr) | |
15831 | { | |
15832 | fi->variant_parts.emplace_back (); | |
15833 | new_part = &fi->variant_parts.back (); | |
15834 | } | |
15835 | else if (!fi->current_variant_part->processing_variant) | |
15836 | { | |
15837 | complaint (_("nested DW_TAG_variant_part seen " | |
15838 | "- DIE at %s [in module %s]"), | |
15839 | sect_offset_str (die->sect_off), | |
5e22e966 | 15840 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15841 | return; |
15842 | } | |
15843 | else | |
15844 | { | |
15845 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15846 | current.variant_parts.emplace_back (); | |
15847 | new_part = ¤t.variant_parts.back (); | |
15848 | } | |
15849 | ||
15850 | /* When we recurse, we want callees to add to this new variant | |
15851 | part. */ | |
15852 | scoped_restore save_current_variant_part | |
15853 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15854 | ||
15855 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15856 | if (discr == NULL) | |
15857 | { | |
15858 | /* It's a univariant form, an extension we support. */ | |
15859 | } | |
15860 | else if (discr->form_is_ref ()) | |
15861 | { | |
15862 | struct dwarf2_cu *target_cu = cu; | |
15863 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15864 | ||
15865 | new_part->discriminant_offset = target_die->sect_off; | |
15866 | } | |
15867 | else | |
15868 | { | |
15869 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15870 | " - DIE at %s [in module %s]"), | |
15871 | sect_offset_str (die->sect_off), | |
5e22e966 | 15872 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15873 | } |
15874 | ||
15875 | for (die_info *child_die = die->child; | |
15876 | child_die != NULL; | |
15877 | child_die = child_die->sibling) | |
15878 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15879 | } | |
15880 | ||
15881 | /* A helper for handle_struct_member_die that handles | |
15882 | DW_TAG_variant. */ | |
15883 | ||
15884 | static void | |
15885 | handle_variant (struct die_info *die, struct type *type, | |
15886 | struct field_info *fi, | |
15887 | std::vector<struct symbol *> *template_args, | |
15888 | struct dwarf2_cu *cu) | |
15889 | { | |
15890 | if (fi->current_variant_part == nullptr) | |
15891 | { | |
15892 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15893 | "- DIE at %s [in module %s]"), | |
15894 | sect_offset_str (die->sect_off), | |
5e22e966 | 15895 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15896 | return; |
15897 | } | |
15898 | if (fi->current_variant_part->processing_variant) | |
15899 | { | |
15900 | complaint (_("nested DW_TAG_variant seen " | |
15901 | "- DIE at %s [in module %s]"), | |
15902 | sect_offset_str (die->sect_off), | |
5e22e966 | 15903 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15904 | return; |
15905 | } | |
15906 | ||
15907 | scoped_restore save_processing_variant | |
15908 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15909 | true); | |
15910 | ||
15911 | fi->current_variant_part->variants.emplace_back (); | |
15912 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15913 | variant.first_field = fi->fields.size (); | |
15914 | ||
15915 | /* In a variant we want to get the discriminant and also add a | |
15916 | field for our sole member child. */ | |
15917 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 15918 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
15919 | { |
15920 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 15921 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
15922 | variant.default_branch = true; |
15923 | else | |
9d2246fc | 15924 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
15925 | } |
15926 | else | |
cae21f8e | 15927 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
15928 | |
15929 | for (die_info *variant_child = die->child; | |
15930 | variant_child != NULL; | |
15931 | variant_child = variant_child->sibling) | |
15932 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15933 | ||
15934 | variant.last_field = fi->fields.size (); | |
15935 | } | |
15936 | ||
2ddeaf8a TT |
15937 | /* A helper for process_structure_scope that handles a single member |
15938 | DIE. */ | |
15939 | ||
15940 | static void | |
15941 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15942 | struct field_info *fi, | |
15943 | std::vector<struct symbol *> *template_args, | |
15944 | struct dwarf2_cu *cu) | |
15945 | { | |
15946 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15947 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15948 | { |
15949 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15950 | should be a DW_TAG_member that is a declaration, but | |
15951 | all versions of G++ as of this writing (so through at | |
15952 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15953 | tags for them instead. */ | |
15954 | dwarf2_add_field (fi, child_die, cu); | |
15955 | } | |
15956 | else if (child_die->tag == DW_TAG_subprogram) | |
15957 | { | |
15958 | /* Rust doesn't have member functions in the C++ sense. | |
15959 | However, it does emit ordinary functions as children | |
15960 | of a struct DIE. */ | |
15961 | if (cu->language == language_rust) | |
15962 | read_func_scope (child_die, cu); | |
15963 | else | |
15964 | { | |
15965 | /* C++ member function. */ | |
15966 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15967 | } | |
15968 | } | |
15969 | else if (child_die->tag == DW_TAG_inheritance) | |
15970 | { | |
15971 | /* C++ base class field. */ | |
15972 | dwarf2_add_field (fi, child_die, cu); | |
15973 | } | |
15974 | else if (type_can_define_types (child_die)) | |
15975 | dwarf2_add_type_defn (fi, child_die, cu); | |
15976 | else if (child_die->tag == DW_TAG_template_type_param | |
15977 | || child_die->tag == DW_TAG_template_value_param) | |
15978 | { | |
15979 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15980 | ||
15981 | if (arg != NULL) | |
15982 | template_args->push_back (arg); | |
15983 | } | |
9c6a1327 TT |
15984 | else if (child_die->tag == DW_TAG_variant_part) |
15985 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15986 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15987 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15988 | } |
15989 | ||
c767944b DJ |
15990 | /* Finish creating a structure or union type, including filling in |
15991 | its members and creating a symbol for it. */ | |
15992 | ||
15993 | static void | |
15994 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15995 | { | |
5e22e966 | 15996 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15997 | struct die_info *child_die; |
c767944b DJ |
15998 | struct type *type; |
15999 | ||
16000 | type = get_die_type (die, cu); | |
16001 | if (type == NULL) | |
16002 | type = read_structure_type (die, cu); | |
16003 | ||
3e1d3d8c | 16004 | bool has_template_parameters = false; |
e142c38c | 16005 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16006 | { |
16007 | struct field_info fi; | |
2f4732b0 | 16008 | std::vector<struct symbol *> template_args; |
c906108c | 16009 | |
639d11d3 | 16010 | child_die = die->child; |
c906108c SS |
16011 | |
16012 | while (child_die && child_die->tag) | |
16013 | { | |
2ddeaf8a | 16014 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16015 | child_die = child_die->sibling; |
c906108c SS |
16016 | } |
16017 | ||
34eaf542 | 16018 | /* Attach template arguments to type. */ |
2f4732b0 | 16019 | if (!template_args.empty ()) |
34eaf542 | 16020 | { |
3e1d3d8c | 16021 | has_template_parameters = true; |
34eaf542 | 16022 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16023 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16024 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16025 | = XOBNEWVEC (&objfile->objfile_obstack, |
16026 | struct symbol *, | |
16027 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16028 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16029 | template_args.data (), |
34eaf542 TT |
16030 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16031 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16032 | } |
16033 | ||
c906108c | 16034 | /* Attach fields and member functions to the type. */ |
317f7127 | 16035 | if (fi.nfields () > 0) |
e7c27a73 | 16036 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16037 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16038 | { |
e7c27a73 | 16039 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16040 | |
c5aa993b | 16041 | /* Get the type which refers to the base class (possibly this |
c906108c | 16042 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16043 | class from the DW_AT_containing_type attribute. This use of |
16044 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16045 | |
e142c38c | 16046 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16047 | { |
e7c27a73 | 16048 | struct type *t = die_containing_type (die, cu); |
c906108c | 16049 | |
ae6ae975 | 16050 | set_type_vptr_basetype (type, t); |
c906108c SS |
16051 | if (type == t) |
16052 | { | |
c906108c SS |
16053 | int i; |
16054 | ||
16055 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16056 | for (i = t->num_fields () - 1; |
c906108c SS |
16057 | i >= TYPE_N_BASECLASSES (t); |
16058 | --i) | |
16059 | { | |
0d5cff50 | 16060 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16061 | |
dda83cd7 | 16062 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16063 | { |
ae6ae975 | 16064 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16065 | break; |
16066 | } | |
16067 | } | |
16068 | ||
16069 | /* Complain if virtual function table field not found. */ | |
16070 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16071 | complaint (_("virtual function table pointer " |
3e43a32a | 16072 | "not found when defining class '%s'"), |
7d93a1e0 | 16073 | type->name () ? type->name () : ""); |
c906108c SS |
16074 | } |
16075 | else | |
16076 | { | |
ae6ae975 | 16077 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16078 | } |
16079 | } | |
f6235d4c | 16080 | else if (cu->producer |
61012eef | 16081 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16082 | { |
16083 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16084 | of the containing type, but the vtable pointer is |
16085 | always named __vfp. */ | |
f6235d4c EZ |
16086 | |
16087 | int i; | |
16088 | ||
1f704f76 | 16089 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16090 | i >= TYPE_N_BASECLASSES (type); |
16091 | --i) | |
16092 | { | |
16093 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16094 | { | |
ae6ae975 DE |
16095 | set_type_vptr_fieldno (type, i); |
16096 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16097 | break; |
16098 | } | |
16099 | } | |
16100 | } | |
c906108c | 16101 | } |
98751a41 JK |
16102 | |
16103 | /* Copy fi.typedef_field_list linked list elements content into the | |
16104 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16105 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16106 | { |
be2daae6 | 16107 | int count = fi.typedef_field_list.size (); |
98751a41 | 16108 | |
a0d7a4ff | 16109 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16110 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16111 | = ((struct decl_field *) |
be2daae6 TT |
16112 | TYPE_ALLOC (type, |
16113 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16114 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16115 | |
be2daae6 TT |
16116 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16117 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16118 | } |
c767944b | 16119 | |
883fd55a KS |
16120 | /* Copy fi.nested_types_list linked list elements content into the |
16121 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16122 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16123 | { |
be2daae6 | 16124 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16125 | |
16126 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16127 | TYPE_NESTED_TYPES_ARRAY (type) | |
16128 | = ((struct decl_field *) | |
be2daae6 TT |
16129 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16130 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16131 | |
be2daae6 TT |
16132 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16133 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16134 | } |
c906108c | 16135 | } |
63d06c5c | 16136 | |
bb5ed363 | 16137 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16138 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16139 | cu->rust_unions.push_back (type); | |
57567375 TT |
16140 | else if (cu->language == language_ada) |
16141 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16142 | |
90aeadfc DC |
16143 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16144 | snapshots) has been known to create a die giving a declaration | |
16145 | for a class that has, as a child, a die giving a definition for a | |
16146 | nested class. So we have to process our children even if the | |
16147 | current die is a declaration. Normally, of course, a declaration | |
16148 | won't have any children at all. */ | |
134d01f1 | 16149 | |
ca040673 DE |
16150 | child_die = die->child; |
16151 | ||
90aeadfc DC |
16152 | while (child_die != NULL && child_die->tag) |
16153 | { | |
16154 | if (child_die->tag == DW_TAG_member | |
16155 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16156 | || child_die->tag == DW_TAG_inheritance |
16157 | || child_die->tag == DW_TAG_template_value_param | |
16158 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16159 | { |
90aeadfc | 16160 | /* Do nothing. */ |
134d01f1 | 16161 | } |
90aeadfc DC |
16162 | else |
16163 | process_die (child_die, cu); | |
134d01f1 | 16164 | |
436c571c | 16165 | child_die = child_die->sibling; |
134d01f1 DJ |
16166 | } |
16167 | ||
fa4028e9 JB |
16168 | /* Do not consider external references. According to the DWARF standard, |
16169 | these DIEs are identified by the fact that they have no byte_size | |
16170 | attribute, and a declaration attribute. */ | |
16171 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16172 | || !die_is_declaration (die, cu) |
16173 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16174 | { |
16175 | struct symbol *sym = new_symbol (die, type, cu); | |
16176 | ||
16177 | if (has_template_parameters) | |
16178 | { | |
a776957c TT |
16179 | struct symtab *symtab; |
16180 | if (sym != nullptr) | |
16181 | symtab = symbol_symtab (sym); | |
16182 | else if (cu->line_header != nullptr) | |
16183 | { | |
16184 | /* Any related symtab will do. */ | |
16185 | symtab | |
7ba99d21 | 16186 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16187 | } |
16188 | else | |
16189 | { | |
16190 | symtab = nullptr; | |
16191 | complaint (_("could not find suitable " | |
16192 | "symtab for template parameter" | |
16193 | " - DIE at %s [in module %s]"), | |
16194 | sect_offset_str (die->sect_off), | |
16195 | objfile_name (objfile)); | |
16196 | } | |
16197 | ||
16198 | if (symtab != nullptr) | |
16199 | { | |
16200 | /* Make sure that the symtab is set on the new symbols. | |
16201 | Even though they don't appear in this symtab directly, | |
16202 | other parts of gdb assume that symbols do, and this is | |
16203 | reasonably true. */ | |
16204 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16205 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16206 | } | |
3e1d3d8c TT |
16207 | } |
16208 | } | |
134d01f1 DJ |
16209 | } |
16210 | ||
ed6acedd TT |
16211 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16212 | type, update TYPE using some information only available in DIE's | |
16213 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16214 | |
16215 | static void | |
16216 | update_enumeration_type_from_children (struct die_info *die, | |
16217 | struct type *type, | |
16218 | struct dwarf2_cu *cu) | |
16219 | { | |
60f7655a | 16220 | struct die_info *child_die; |
55426c9d JB |
16221 | int unsigned_enum = 1; |
16222 | int flag_enum = 1; | |
55426c9d | 16223 | |
8268c778 | 16224 | auto_obstack obstack; |
ed6acedd | 16225 | std::vector<struct field> fields; |
55426c9d | 16226 | |
60f7655a DE |
16227 | for (child_die = die->child; |
16228 | child_die != NULL && child_die->tag; | |
436c571c | 16229 | child_die = child_die->sibling) |
55426c9d JB |
16230 | { |
16231 | struct attribute *attr; | |
16232 | LONGEST value; | |
16233 | const gdb_byte *bytes; | |
16234 | struct dwarf2_locexpr_baton *baton; | |
16235 | const char *name; | |
60f7655a | 16236 | |
55426c9d JB |
16237 | if (child_die->tag != DW_TAG_enumerator) |
16238 | continue; | |
16239 | ||
16240 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16241 | if (attr == NULL) | |
16242 | continue; | |
16243 | ||
16244 | name = dwarf2_name (child_die, cu); | |
16245 | if (name == NULL) | |
16246 | name = "<anonymous enumerator>"; | |
16247 | ||
16248 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16249 | &value, &bytes, &baton); | |
16250 | if (value < 0) | |
16251 | { | |
16252 | unsigned_enum = 0; | |
16253 | flag_enum = 0; | |
16254 | } | |
55426c9d | 16255 | else |
edd45eb0 SM |
16256 | { |
16257 | if (count_one_bits_ll (value) >= 2) | |
16258 | flag_enum = 0; | |
edd45eb0 | 16259 | } |
55426c9d | 16260 | |
ed6acedd TT |
16261 | fields.emplace_back (); |
16262 | struct field &field = fields.back (); | |
16263 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16264 | SET_FIELD_ENUMVAL (field, value); | |
16265 | } | |
16266 | ||
16267 | if (!fields.empty ()) | |
16268 | { | |
5e33d5f4 | 16269 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16270 | type->set_fields |
16271 | ((struct field *) | |
16272 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16273 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16274 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16275 | } |
16276 | ||
16277 | if (unsigned_enum) | |
653223d3 SM |
16278 | type->set_is_unsigned (true); |
16279 | ||
55426c9d | 16280 | if (flag_enum) |
9902b327 | 16281 | type->set_is_flag_enum (true); |
55426c9d JB |
16282 | } |
16283 | ||
134d01f1 DJ |
16284 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16285 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16286 | |
f792889a | 16287 | static struct type * |
134d01f1 | 16288 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16289 | { |
5e22e966 | 16290 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16291 | struct type *type; |
c906108c | 16292 | struct attribute *attr; |
0114d602 | 16293 | const char *name; |
134d01f1 | 16294 | |
348e048f DE |
16295 | /* If the definition of this type lives in .debug_types, read that type. |
16296 | Don't follow DW_AT_specification though, that will take us back up | |
16297 | the chain and we want to go down. */ | |
052c8bb8 | 16298 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16299 | if (attr != nullptr) |
348e048f | 16300 | { |
ac9ec31b | 16301 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16302 | |
ac9ec31b | 16303 | /* The type's CU may not be the same as CU. |
02142a6c | 16304 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16305 | return set_die_type (die, type, cu); |
16306 | } | |
16307 | ||
c906108c SS |
16308 | type = alloc_type (objfile); |
16309 | ||
67607e24 | 16310 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16311 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16312 | if (name != NULL) |
d0e39ea2 | 16313 | type->set_name (name); |
c906108c | 16314 | |
0626fc76 TT |
16315 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16316 | if (attr != NULL) | |
16317 | { | |
16318 | struct type *underlying_type = die_type (die, cu); | |
16319 | ||
16320 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16321 | } | |
16322 | ||
e142c38c | 16323 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16324 | if (attr != nullptr) |
c906108c | 16325 | { |
529908cb | 16326 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16327 | } |
16328 | else | |
16329 | { | |
16330 | TYPE_LENGTH (type) = 0; | |
16331 | } | |
16332 | ||
2b4424c3 TT |
16333 | maybe_set_alignment (cu, die, type); |
16334 | ||
137033e9 JB |
16335 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16336 | declared as private in the package spec, and then defined only | |
16337 | inside the package body. Such types are known as Taft Amendment | |
16338 | Types. When another package uses such a type, an incomplete DIE | |
16339 | may be generated by the compiler. */ | |
02eb380e | 16340 | if (die_is_declaration (die, cu)) |
b4b73759 | 16341 | type->set_is_stub (true); |
02eb380e | 16342 | |
0626fc76 TT |
16343 | /* If this type has an underlying type that is not a stub, then we |
16344 | may use its attributes. We always use the "unsigned" attribute | |
16345 | in this situation, because ordinarily we guess whether the type | |
16346 | is unsigned -- but the guess can be wrong and the underlying type | |
16347 | can tell us the reality. However, we defer to a local size | |
16348 | attribute if one exists, because this lets the compiler override | |
16349 | the underlying type if needed. */ | |
e46d3488 | 16350 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16351 | { |
9e7c9a03 HD |
16352 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16353 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16354 | |
16355 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16356 | ||
0626fc76 | 16357 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16358 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16359 | |
2b4424c3 | 16360 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16361 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16362 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16363 | } |
16364 | ||
aa70e35c | 16365 | type->set_is_declared_class (dwarf2_flag_true_p (die, DW_AT_enum_class, cu)); |
3d567982 | 16366 | |
ed6acedd TT |
16367 | set_die_type (die, type, cu); |
16368 | ||
16369 | /* Finish the creation of this type by using the enum's children. | |
16370 | Note that, as usual, this must come after set_die_type to avoid | |
16371 | infinite recursion when trying to compute the names of the | |
16372 | enumerators. */ | |
16373 | update_enumeration_type_from_children (die, type, cu); | |
16374 | ||
16375 | return type; | |
134d01f1 DJ |
16376 | } |
16377 | ||
16378 | /* Given a pointer to a die which begins an enumeration, process all | |
16379 | the dies that define the members of the enumeration, and create the | |
16380 | symbol for the enumeration type. | |
16381 | ||
16382 | NOTE: We reverse the order of the element list. */ | |
16383 | ||
16384 | static void | |
16385 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16386 | { | |
f792889a | 16387 | struct type *this_type; |
134d01f1 | 16388 | |
f792889a DJ |
16389 | this_type = get_die_type (die, cu); |
16390 | if (this_type == NULL) | |
16391 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16392 | |
639d11d3 | 16393 | if (die->child != NULL) |
c906108c | 16394 | { |
9dc481d3 | 16395 | struct die_info *child_die; |
15d034d0 | 16396 | const char *name; |
9dc481d3 | 16397 | |
639d11d3 | 16398 | child_die = die->child; |
c906108c SS |
16399 | while (child_die && child_die->tag) |
16400 | { | |
16401 | if (child_die->tag != DW_TAG_enumerator) | |
16402 | { | |
e7c27a73 | 16403 | process_die (child_die, cu); |
c906108c SS |
16404 | } |
16405 | else | |
16406 | { | |
39cbfefa DJ |
16407 | name = dwarf2_name (child_die, cu); |
16408 | if (name) | |
ed6acedd | 16409 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16410 | } |
16411 | ||
436c571c | 16412 | child_die = child_die->sibling; |
c906108c | 16413 | } |
c906108c | 16414 | } |
134d01f1 | 16415 | |
6c83ed52 TT |
16416 | /* If we are reading an enum from a .debug_types unit, and the enum |
16417 | is a declaration, and the enum is not the signatured type in the | |
16418 | unit, then we do not want to add a symbol for it. Adding a | |
16419 | symbol would in some cases obscure the true definition of the | |
16420 | enum, giving users an incomplete type when the definition is | |
16421 | actually available. Note that we do not want to do this for all | |
16422 | enums which are just declarations, because C++0x allows forward | |
16423 | enum declarations. */ | |
3019eac3 | 16424 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16425 | && die_is_declaration (die, cu)) |
16426 | { | |
52dc124a | 16427 | struct signatured_type *sig_type; |
6c83ed52 | 16428 | |
c0f78cd4 | 16429 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16430 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16431 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16432 | return; |
16433 | } | |
16434 | ||
f792889a | 16435 | new_symbol (die, this_type, cu); |
c906108c SS |
16436 | } |
16437 | ||
57567375 TT |
16438 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16439 | expression for an index type and finds the corresponding field | |
16440 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16441 | and updates *FIELD, false if it fails to recognize an | |
16442 | expression. */ | |
16443 | ||
16444 | static bool | |
16445 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16446 | int *bounds_offset, struct field *field, | |
16447 | struct dwarf2_cu *cu) | |
16448 | { | |
16449 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16450 | if (attr == nullptr || !attr->form_is_block ()) | |
16451 | return false; | |
16452 | ||
16453 | const struct dwarf_block *block = attr->as_block (); | |
16454 | const gdb_byte *start = block->data; | |
16455 | const gdb_byte *end = block->data + block->size; | |
16456 | ||
16457 | /* The expression to recognize generally looks like: | |
16458 | ||
16459 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16460 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16461 | ||
16462 | However, the second "plus_uconst" may be missing: | |
16463 | ||
16464 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16465 | DW_OP_deref_size: 4) | |
16466 | ||
16467 | This happens when the field is at the start of the structure. | |
16468 | ||
16469 | Also, the final deref may not be sized: | |
16470 | ||
16471 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16472 | DW_OP_deref) | |
16473 | ||
16474 | This happens when the size of the index type happens to be the | |
16475 | same as the architecture's word size. This can occur with or | |
16476 | without the second plus_uconst. */ | |
16477 | ||
16478 | if (end - start < 2) | |
16479 | return false; | |
16480 | if (*start++ != DW_OP_push_object_address) | |
16481 | return false; | |
16482 | if (*start++ != DW_OP_plus_uconst) | |
16483 | return false; | |
16484 | ||
16485 | uint64_t this_bound_off; | |
16486 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16487 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16488 | return false; | |
16489 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16490 | is consistent among all bounds. */ | |
16491 | if (*bounds_offset == -1) | |
16492 | *bounds_offset = this_bound_off; | |
16493 | else if (*bounds_offset != this_bound_off) | |
16494 | return false; | |
16495 | ||
16496 | if (start == end || *start++ != DW_OP_deref) | |
16497 | return false; | |
16498 | ||
16499 | int offset = 0; | |
16500 | if (start ==end) | |
16501 | return false; | |
16502 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16503 | { | |
16504 | /* This means an offset of 0. */ | |
16505 | } | |
16506 | else if (*start++ != DW_OP_plus_uconst) | |
16507 | return false; | |
16508 | else | |
16509 | { | |
16510 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16511 | uint64_t val; | |
16512 | start = gdb_read_uleb128 (start, end, &val); | |
16513 | if (start == nullptr) | |
16514 | return false; | |
16515 | if ((int) val != val) | |
16516 | return false; | |
16517 | offset = val; | |
16518 | } | |
16519 | ||
16520 | if (start == end) | |
16521 | return false; | |
16522 | ||
16523 | uint64_t size; | |
16524 | if (*start == DW_OP_deref_size) | |
16525 | { | |
16526 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16527 | if (start == nullptr) | |
16528 | return false; | |
16529 | } | |
16530 | else if (*start == DW_OP_deref) | |
16531 | { | |
16532 | size = cu->header.addr_size; | |
16533 | ++start; | |
16534 | } | |
16535 | else | |
16536 | return false; | |
16537 | ||
16538 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16539 | if (size != TYPE_LENGTH (field->type ())) | |
16540 | FIELD_BITSIZE (*field) = 8 * size; | |
16541 | ||
16542 | return true; | |
16543 | } | |
16544 | ||
16545 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16546 | some kinds of Ada arrays: | |
16547 | ||
16548 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16549 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16550 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16551 | (DW_OP_push_object_address; DW_OP_deref) | |
16552 | <11e3> DW_AT_type : <0x1173> | |
16553 | <11e7> DW_AT_sibling : <0x1201> | |
16554 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16555 | <11ec> DW_AT_type : <0x1206> | |
16556 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16557 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16558 | DW_OP_deref_size: 4) | |
16559 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16560 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16561 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16562 | ||
16563 | This actually represents a "thick pointer", which is a structure | |
16564 | with two elements: one that is a pointer to the array data, and one | |
16565 | that is a pointer to another structure; this second structure holds | |
16566 | the array bounds. | |
16567 | ||
16568 | This returns a new type on success, or nullptr if this didn't | |
16569 | recognize the type. */ | |
16570 | ||
16571 | static struct type * | |
16572 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16573 | struct type *type) | |
16574 | { | |
16575 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16576 | /* So far we've only seen this with block form. */ | |
16577 | if (attr == nullptr || !attr->form_is_block ()) | |
16578 | return nullptr; | |
16579 | ||
16580 | /* Note that this will fail if the structure layout is changed by | |
16581 | the compiler. However, we have no good way to recognize some | |
16582 | other layout, because we don't know what expression the compiler | |
16583 | might choose to emit should this happen. */ | |
16584 | struct dwarf_block *blk = attr->as_block (); | |
16585 | if (blk->size != 2 | |
16586 | || blk->data[0] != DW_OP_push_object_address | |
16587 | || blk->data[1] != DW_OP_deref) | |
16588 | return nullptr; | |
16589 | ||
16590 | int bounds_offset = -1; | |
16591 | int max_align = -1; | |
16592 | std::vector<struct field> range_fields; | |
16593 | for (struct die_info *child_die = die->child; | |
16594 | child_die; | |
16595 | child_die = child_die->sibling) | |
16596 | { | |
16597 | if (child_die->tag == DW_TAG_subrange_type) | |
16598 | { | |
16599 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16600 | ||
16601 | int this_align = type_align (underlying); | |
16602 | if (this_align > max_align) | |
16603 | max_align = this_align; | |
16604 | ||
16605 | range_fields.emplace_back (); | |
16606 | range_fields.emplace_back (); | |
16607 | ||
16608 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16609 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16610 | ||
16611 | lower.set_type (underlying); | |
16612 | FIELD_ARTIFICIAL (lower) = 1; | |
16613 | ||
16614 | upper.set_type (underlying); | |
16615 | FIELD_ARTIFICIAL (upper) = 1; | |
16616 | ||
16617 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16618 | &bounds_offset, &lower, cu) | |
16619 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16620 | &bounds_offset, &upper, cu)) | |
16621 | return nullptr; | |
16622 | } | |
16623 | } | |
16624 | ||
16625 | /* This shouldn't really happen, but double-check that we found | |
16626 | where the bounds are stored. */ | |
16627 | if (bounds_offset == -1) | |
16628 | return nullptr; | |
16629 | ||
16630 | struct objfile *objfile = cu->per_objfile->objfile; | |
16631 | for (int i = 0; i < range_fields.size (); i += 2) | |
16632 | { | |
16633 | char name[20]; | |
16634 | ||
16635 | /* Set the name of each field in the bounds. */ | |
16636 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
16637 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
16638 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
16639 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
16640 | } | |
16641 | ||
16642 | struct type *bounds = alloc_type (objfile); | |
16643 | bounds->set_code (TYPE_CODE_STRUCT); | |
16644 | ||
16645 | bounds->set_num_fields (range_fields.size ()); | |
16646 | bounds->set_fields | |
16647 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
16648 | * sizeof (struct field)))); | |
16649 | memcpy (bounds->fields (), range_fields.data (), | |
16650 | bounds->num_fields () * sizeof (struct field)); | |
16651 | ||
16652 | int last_fieldno = range_fields.size () - 1; | |
16653 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
16654 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
16655 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
16656 | ||
16657 | /* Rewrite the existing array type in place. Specifically, we | |
16658 | remove any dynamic properties we might have read, and we replace | |
16659 | the index types. */ | |
16660 | struct type *iter = type; | |
16661 | for (int i = 0; i < range_fields.size (); i += 2) | |
16662 | { | |
16663 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
16664 | iter->main_type->dyn_prop_list = nullptr; | |
16665 | iter->set_index_type | |
16666 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
16667 | iter = TYPE_TARGET_TYPE (iter); | |
16668 | } | |
16669 | ||
16670 | struct type *result = alloc_type (objfile); | |
16671 | result->set_code (TYPE_CODE_STRUCT); | |
16672 | ||
16673 | result->set_num_fields (2); | |
16674 | result->set_fields | |
16675 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
16676 | * sizeof (struct field)))); | |
16677 | ||
16678 | /* The names are chosen to coincide with what the compiler does with | |
16679 | -fgnat-encodings=all, which the Ada code in gdb already | |
16680 | understands. */ | |
16681 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
16682 | result->field (0).set_type (lookup_pointer_type (type)); | |
16683 | ||
16684 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
16685 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
16686 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
16687 | ||
16688 | result->set_name (type->name ()); | |
16689 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
16690 | + TYPE_LENGTH (result->field (1).type ())); | |
16691 | ||
16692 | return result; | |
16693 | } | |
16694 | ||
c906108c SS |
16695 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
16696 | the DIE's type field. For now, this only handles one dimensional | |
16697 | arrays. */ | |
16698 | ||
f792889a | 16699 | static struct type * |
e7c27a73 | 16700 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16701 | { |
5e22e966 | 16702 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16703 | struct die_info *child_die; |
7e314c57 | 16704 | struct type *type; |
c906108c | 16705 | struct type *element_type, *range_type, *index_type; |
c906108c | 16706 | struct attribute *attr; |
15d034d0 | 16707 | const char *name; |
a405673c | 16708 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16709 | unsigned int bit_stride = 0; |
c906108c | 16710 | |
e7c27a73 | 16711 | element_type = die_type (die, cu); |
c906108c | 16712 | |
7e314c57 JK |
16713 | /* The die_type call above may have already set the type for this DIE. */ |
16714 | type = get_die_type (die, cu); | |
16715 | if (type) | |
16716 | return type; | |
16717 | ||
dc53a7ad JB |
16718 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16719 | if (attr != NULL) | |
a405673c JB |
16720 | { |
16721 | int stride_ok; | |
293e7e51 | 16722 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16723 | |
16724 | byte_stride_prop | |
16725 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16726 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16727 | prop_type); | |
a405673c JB |
16728 | if (!stride_ok) |
16729 | { | |
b98664d3 | 16730 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16731 | " - DIE at %s [in module %s]"), |
16732 | sect_offset_str (die->sect_off), | |
5e22e966 | 16733 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16734 | /* Ignore this attribute. We will likely not be able to print |
16735 | arrays of this type correctly, but there is little we can do | |
16736 | to help if we cannot read the attribute's value. */ | |
16737 | byte_stride_prop = NULL; | |
16738 | } | |
16739 | } | |
dc53a7ad JB |
16740 | |
16741 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16742 | if (attr != NULL) | |
529908cb | 16743 | bit_stride = attr->constant_value (0); |
dc53a7ad | 16744 | |
c906108c SS |
16745 | /* Irix 6.2 native cc creates array types without children for |
16746 | arrays with unspecified length. */ | |
639d11d3 | 16747 | if (die->child == NULL) |
c906108c | 16748 | { |
46bf5051 | 16749 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16750 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16751 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16752 | byte_stride_prop, bit_stride); |
f792889a | 16753 | return set_die_type (die, type, cu); |
c906108c SS |
16754 | } |
16755 | ||
791afaa2 | 16756 | std::vector<struct type *> range_types; |
639d11d3 | 16757 | child_die = die->child; |
c906108c SS |
16758 | while (child_die && child_die->tag) |
16759 | { | |
16760 | if (child_die->tag == DW_TAG_subrange_type) | |
16761 | { | |
f792889a | 16762 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16763 | |
dda83cd7 SM |
16764 | if (child_type != NULL) |
16765 | { | |
0963b4bd | 16766 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 16767 | array type creation. */ |
791afaa2 | 16768 | range_types.push_back (child_type); |
dda83cd7 | 16769 | } |
c906108c | 16770 | } |
436c571c | 16771 | child_die = child_die->sibling; |
c906108c SS |
16772 | } |
16773 | ||
cf2b2075 TV |
16774 | if (range_types.empty ()) |
16775 | { | |
16776 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
16777 | sect_offset_str (die->sect_off), | |
16778 | objfile_name (cu->per_objfile->objfile)); | |
16779 | return NULL; | |
16780 | } | |
16781 | ||
c906108c SS |
16782 | /* Dwarf2 dimensions are output from left to right, create the |
16783 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16784 | |
c906108c | 16785 | type = element_type; |
7ca2d3a3 DL |
16786 | |
16787 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16788 | { | |
16789 | int i = 0; | |
9a619af0 | 16790 | |
791afaa2 | 16791 | while (i < range_types.size ()) |
10f6a3ad TT |
16792 | { |
16793 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
16794 | byte_stride_prop, bit_stride); | |
16795 | bit_stride = 0; | |
16796 | byte_stride_prop = nullptr; | |
16797 | } | |
7ca2d3a3 DL |
16798 | } |
16799 | else | |
16800 | { | |
791afaa2 | 16801 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16802 | while (ndim-- > 0) |
10f6a3ad TT |
16803 | { |
16804 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
16805 | byte_stride_prop, bit_stride); | |
16806 | bit_stride = 0; | |
16807 | byte_stride_prop = nullptr; | |
16808 | } | |
7ca2d3a3 | 16809 | } |
c906108c | 16810 | |
cf2b2075 TV |
16811 | gdb_assert (type != element_type); |
16812 | ||
f5f8a009 EZ |
16813 | /* Understand Dwarf2 support for vector types (like they occur on |
16814 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16815 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16816 | custom vendor extension. The main difference between a regular | |
16817 | array and the vector variant is that vectors are passed by value | |
16818 | to functions. */ | |
e142c38c | 16819 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16820 | if (attr != nullptr) |
ea37ba09 | 16821 | make_vector_type (type); |
f5f8a009 | 16822 | |
dbc98a8b KW |
16823 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16824 | implementation may choose to implement triple vectors using this | |
16825 | attribute. */ | |
16826 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 16827 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 16828 | { |
529908cb TT |
16829 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
16830 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 16831 | else |
b98664d3 | 16832 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16833 | "than the total size of elements")); |
dbc98a8b KW |
16834 | } |
16835 | ||
39cbfefa DJ |
16836 | name = dwarf2_name (die, cu); |
16837 | if (name) | |
d0e39ea2 | 16838 | type->set_name (name); |
6e70227d | 16839 | |
2b4424c3 TT |
16840 | maybe_set_alignment (cu, die, type); |
16841 | ||
57567375 TT |
16842 | struct type *replacement_type = nullptr; |
16843 | if (cu->language == language_ada) | |
16844 | { | |
16845 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
16846 | if (replacement_type != nullptr) | |
16847 | type = replacement_type; | |
16848 | } | |
16849 | ||
0963b4bd | 16850 | /* Install the type in the die. */ |
57567375 | 16851 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
16852 | |
16853 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16854 | set_descriptive_type (type, die, cu); |
16855 | ||
7e314c57 | 16856 | return type; |
c906108c SS |
16857 | } |
16858 | ||
7ca2d3a3 | 16859 | static enum dwarf_array_dim_ordering |
6e70227d | 16860 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16861 | { |
16862 | struct attribute *attr; | |
16863 | ||
16864 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16865 | ||
435d3d88 | 16866 | if (attr != nullptr) |
1bc397c5 TT |
16867 | { |
16868 | LONGEST val = attr->constant_value (-1); | |
16869 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
16870 | return (enum dwarf_array_dim_ordering) val; | |
16871 | } | |
7ca2d3a3 | 16872 | |
0963b4bd MS |
16873 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16874 | opposite order to the dwarf2 specification, but data is still | |
16875 | laid out as per normal fortran. | |
7ca2d3a3 | 16876 | |
0963b4bd MS |
16877 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16878 | version checking. */ | |
7ca2d3a3 | 16879 | |
905e0470 PM |
16880 | if (cu->language == language_fortran |
16881 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16882 | { |
16883 | return DW_ORD_row_major; | |
16884 | } | |
16885 | ||
3a3440fb | 16886 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
16887 | { |
16888 | case array_column_major: | |
16889 | return DW_ORD_col_major; | |
16890 | case array_row_major: | |
16891 | default: | |
16892 | return DW_ORD_row_major; | |
16893 | }; | |
16894 | } | |
16895 | ||
72019c9c | 16896 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16897 | the DIE's type field. */ |
72019c9c | 16898 | |
f792889a | 16899 | static struct type * |
72019c9c GM |
16900 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16901 | { | |
7e314c57 JK |
16902 | struct type *domain_type, *set_type; |
16903 | struct attribute *attr; | |
f792889a | 16904 | |
7e314c57 JK |
16905 | domain_type = die_type (die, cu); |
16906 | ||
16907 | /* The die_type call above may have already set the type for this DIE. */ | |
16908 | set_type = get_die_type (die, cu); | |
16909 | if (set_type) | |
16910 | return set_type; | |
16911 | ||
16912 | set_type = create_set_type (NULL, domain_type); | |
16913 | ||
16914 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
16915 | if (attr != nullptr && attr->form_is_unsigned ()) |
16916 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 16917 | |
2b4424c3 TT |
16918 | maybe_set_alignment (cu, die, set_type); |
16919 | ||
f792889a | 16920 | return set_die_type (die, set_type, cu); |
72019c9c | 16921 | } |
7ca2d3a3 | 16922 | |
0971de02 TT |
16923 | /* A helper for read_common_block that creates a locexpr baton. |
16924 | SYM is the symbol which we are marking as computed. | |
16925 | COMMON_DIE is the DIE for the common block. | |
16926 | COMMON_LOC is the location expression attribute for the common | |
16927 | block itself. | |
16928 | MEMBER_LOC is the location expression attribute for the particular | |
16929 | member of the common block that we are processing. | |
16930 | CU is the CU from which the above come. */ | |
16931 | ||
16932 | static void | |
16933 | mark_common_block_symbol_computed (struct symbol *sym, | |
16934 | struct die_info *common_die, | |
16935 | struct attribute *common_loc, | |
16936 | struct attribute *member_loc, | |
16937 | struct dwarf2_cu *cu) | |
16938 | { | |
5e22e966 | 16939 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16940 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16941 | struct dwarf2_locexpr_baton *baton; |
16942 | gdb_byte *ptr; | |
16943 | unsigned int cu_off; | |
08feed99 | 16944 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16945 | LONGEST offset = 0; |
16946 | ||
16947 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16948 | gdb_assert (common_loc->form_is_block ()); |
16949 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16950 | || member_loc->form_is_constant ()); |
0971de02 | 16951 | |
8d749320 | 16952 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16953 | baton->per_objfile = per_objfile; |
0971de02 TT |
16954 | baton->per_cu = cu->per_cu; |
16955 | gdb_assert (baton->per_cu); | |
16956 | ||
16957 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16958 | ||
cd6c91b4 | 16959 | if (member_loc->form_is_constant ()) |
0971de02 | 16960 | { |
0826b30a | 16961 | offset = member_loc->constant_value (0); |
0971de02 TT |
16962 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16963 | } | |
16964 | else | |
9d2246fc | 16965 | baton->size += member_loc->as_block ()->size; |
0971de02 | 16966 | |
224c3ddb | 16967 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16968 | baton->data = ptr; |
16969 | ||
16970 | *ptr++ = DW_OP_call4; | |
9c541725 | 16971 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16972 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16973 | ptr += 4; | |
16974 | ||
cd6c91b4 | 16975 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16976 | { |
16977 | *ptr++ = DW_OP_addr; | |
16978 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16979 | ptr += cu->header.addr_size; | |
16980 | } | |
16981 | else | |
16982 | { | |
16983 | /* We have to copy the data here, because DW_OP_call4 will only | |
16984 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
16985 | struct dwarf_block *block = member_loc->as_block (); |
16986 | memcpy (ptr, block->data, block->size); | |
16987 | ptr += block->size; | |
0971de02 TT |
16988 | } |
16989 | ||
16990 | *ptr++ = DW_OP_plus; | |
16991 | gdb_assert (ptr - baton->data == baton->size); | |
16992 | ||
0971de02 | 16993 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16994 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16995 | } |
16996 | ||
4357ac6c TT |
16997 | /* Create appropriate locally-scoped variables for all the |
16998 | DW_TAG_common_block entries. Also create a struct common_block | |
16999 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17000 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17001 | variable names. */ |
c906108c SS |
17002 | |
17003 | static void | |
e7c27a73 | 17004 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17005 | { |
0971de02 TT |
17006 | struct attribute *attr; |
17007 | ||
17008 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17009 | if (attr != nullptr) |
0971de02 TT |
17010 | { |
17011 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17012 | if (attr->form_is_block ()) |
dda83cd7 | 17013 | { |
0971de02 | 17014 | /* Ok. */ |
dda83cd7 | 17015 | } |
cd6c91b4 | 17016 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17017 | { |
0971de02 TT |
17018 | dwarf2_complex_location_expr_complaint (); |
17019 | attr = NULL; | |
dda83cd7 | 17020 | } |
0971de02 | 17021 | else |
dda83cd7 | 17022 | { |
0971de02 TT |
17023 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17024 | "common block member"); | |
17025 | attr = NULL; | |
dda83cd7 | 17026 | } |
0971de02 TT |
17027 | } |
17028 | ||
639d11d3 | 17029 | if (die->child != NULL) |
c906108c | 17030 | { |
5e22e966 | 17031 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17032 | struct die_info *child_die; |
17033 | size_t n_entries = 0, size; | |
17034 | struct common_block *common_block; | |
17035 | struct symbol *sym; | |
74ac6d43 | 17036 | |
4357ac6c TT |
17037 | for (child_die = die->child; |
17038 | child_die && child_die->tag; | |
436c571c | 17039 | child_die = child_die->sibling) |
4357ac6c TT |
17040 | ++n_entries; |
17041 | ||
17042 | size = (sizeof (struct common_block) | |
17043 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17044 | common_block |
17045 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17046 | size); | |
4357ac6c TT |
17047 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17048 | common_block->n_entries = 0; | |
17049 | ||
17050 | for (child_die = die->child; | |
17051 | child_die && child_die->tag; | |
436c571c | 17052 | child_die = child_die->sibling) |
4357ac6c TT |
17053 | { |
17054 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17055 | symbol scope. */ | |
e7c27a73 | 17056 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17057 | if (sym != NULL) |
17058 | { | |
17059 | struct attribute *member_loc; | |
17060 | ||
17061 | common_block->contents[common_block->n_entries++] = sym; | |
17062 | ||
17063 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17064 | cu); | |
17065 | if (member_loc) | |
17066 | { | |
17067 | /* GDB has handled this for a long time, but it is | |
17068 | not specified by DWARF. It seems to have been | |
17069 | emitted by gfortran at least as recently as: | |
17070 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17071 | complaint (_("Variable in common block has " |
0971de02 | 17072 | "DW_AT_data_member_location " |
9d8780f0 SM |
17073 | "- DIE at %s [in module %s]"), |
17074 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17075 | objfile_name (objfile)); |
0971de02 | 17076 | |
cd6c91b4 | 17077 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17078 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17079 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17080 | || member_loc->form_is_block ()) |
0971de02 | 17081 | { |
435d3d88 | 17082 | if (attr != nullptr) |
0971de02 TT |
17083 | mark_common_block_symbol_computed (sym, die, attr, |
17084 | member_loc, cu); | |
17085 | } | |
17086 | else | |
17087 | dwarf2_complex_location_expr_complaint (); | |
17088 | } | |
17089 | } | |
c906108c | 17090 | } |
4357ac6c TT |
17091 | |
17092 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17093 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17094 | } |
17095 | } | |
17096 | ||
0114d602 | 17097 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17098 | |
0114d602 DJ |
17099 | static struct type * |
17100 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17101 | { |
5e22e966 | 17102 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17103 | const char *previous_prefix, *name; |
9219021c | 17104 | int is_anonymous; |
0114d602 DJ |
17105 | struct type *type; |
17106 | ||
17107 | /* For extensions, reuse the type of the original namespace. */ | |
17108 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17109 | { | |
17110 | struct die_info *ext_die; | |
17111 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17112 | |
0114d602 DJ |
17113 | ext_die = dwarf2_extension (die, &ext_cu); |
17114 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17115 | |
17116 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17117 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17118 | return set_die_type (die, type, cu); |
17119 | } | |
9219021c | 17120 | |
e142c38c | 17121 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17122 | |
17123 | /* Now build the name of the current namespace. */ | |
17124 | ||
0114d602 DJ |
17125 | previous_prefix = determine_prefix (die, cu); |
17126 | if (previous_prefix[0] != '\0') | |
17127 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17128 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17129 | |
17130 | /* Create the type. */ | |
19f392bc | 17131 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17132 | |
60531b24 | 17133 | return set_die_type (die, type, cu); |
0114d602 DJ |
17134 | } |
17135 | ||
22cee43f | 17136 | /* Read a namespace scope. */ |
0114d602 DJ |
17137 | |
17138 | static void | |
17139 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17140 | { | |
5e22e966 | 17141 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17142 | int is_anonymous; |
9219021c | 17143 | |
5c4e30ca DC |
17144 | /* Add a symbol associated to this if we haven't seen the namespace |
17145 | before. Also, add a using directive if it's an anonymous | |
17146 | namespace. */ | |
9219021c | 17147 | |
f2f0e013 | 17148 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17149 | { |
17150 | struct type *type; | |
17151 | ||
0114d602 | 17152 | type = read_type_die (die, cu); |
e7c27a73 | 17153 | new_symbol (die, type, cu); |
5c4e30ca | 17154 | |
e8e80198 | 17155 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17156 | if (is_anonymous) |
0114d602 DJ |
17157 | { |
17158 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17159 | |
eb1e02fd | 17160 | std::vector<const char *> excludes; |
804d2729 | 17161 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17162 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17163 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17164 | } |
5c4e30ca | 17165 | } |
9219021c | 17166 | |
639d11d3 | 17167 | if (die->child != NULL) |
d9fa45fe | 17168 | { |
639d11d3 | 17169 | struct die_info *child_die = die->child; |
6e70227d | 17170 | |
d9fa45fe DC |
17171 | while (child_die && child_die->tag) |
17172 | { | |
e7c27a73 | 17173 | process_die (child_die, cu); |
436c571c | 17174 | child_die = child_die->sibling; |
d9fa45fe DC |
17175 | } |
17176 | } | |
38d518c9 EZ |
17177 | } |
17178 | ||
f55ee35c JK |
17179 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17180 | imported module. Still we need that type as local Fortran "use ... only" | |
17181 | declaration imports depend on the created type in determine_prefix. */ | |
17182 | ||
17183 | static struct type * | |
17184 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17185 | { | |
5e22e966 | 17186 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17187 | const char *module_name; |
f55ee35c JK |
17188 | struct type *type; |
17189 | ||
17190 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17191 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17192 | |
f55ee35c JK |
17193 | return set_die_type (die, type, cu); |
17194 | } | |
17195 | ||
5d7cb8df JK |
17196 | /* Read a Fortran module. */ |
17197 | ||
17198 | static void | |
17199 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17200 | { | |
17201 | struct die_info *child_die = die->child; | |
530e8392 KB |
17202 | struct type *type; |
17203 | ||
17204 | type = read_type_die (die, cu); | |
17205 | new_symbol (die, type, cu); | |
5d7cb8df | 17206 | |
5d7cb8df JK |
17207 | while (child_die && child_die->tag) |
17208 | { | |
17209 | process_die (child_die, cu); | |
436c571c | 17210 | child_die = child_die->sibling; |
5d7cb8df JK |
17211 | } |
17212 | } | |
17213 | ||
38d518c9 EZ |
17214 | /* Return the name of the namespace represented by DIE. Set |
17215 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17216 | namespace. */ | |
17217 | ||
17218 | static const char * | |
e142c38c | 17219 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17220 | { |
17221 | struct die_info *current_die; | |
17222 | const char *name = NULL; | |
17223 | ||
17224 | /* Loop through the extensions until we find a name. */ | |
17225 | ||
17226 | for (current_die = die; | |
17227 | current_die != NULL; | |
f2f0e013 | 17228 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17229 | { |
96553a0c DE |
17230 | /* We don't use dwarf2_name here so that we can detect the absence |
17231 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17232 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17233 | |
38d518c9 EZ |
17234 | if (name != NULL) |
17235 | break; | |
17236 | } | |
17237 | ||
17238 | /* Is it an anonymous namespace? */ | |
17239 | ||
17240 | *is_anonymous = (name == NULL); | |
17241 | if (*is_anonymous) | |
2b1dbab0 | 17242 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17243 | |
17244 | return name; | |
d9fa45fe DC |
17245 | } |
17246 | ||
c906108c SS |
17247 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17248 | the user defined type vector. */ | |
17249 | ||
f792889a | 17250 | static struct type * |
e7c27a73 | 17251 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17252 | { |
5e22e966 | 17253 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17254 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17255 | struct type *type; |
8b2dbe47 KB |
17256 | struct attribute *attr_byte_size; |
17257 | struct attribute *attr_address_class; | |
17258 | int byte_size, addr_class; | |
7e314c57 JK |
17259 | struct type *target_type; |
17260 | ||
17261 | target_type = die_type (die, cu); | |
c906108c | 17262 | |
7e314c57 JK |
17263 | /* The die_type call above may have already set the type for this DIE. */ |
17264 | type = get_die_type (die, cu); | |
17265 | if (type) | |
17266 | return type; | |
17267 | ||
17268 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17269 | |
e142c38c | 17270 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17271 | if (attr_byte_size) |
529908cb | 17272 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17273 | else |
8b2dbe47 KB |
17274 | byte_size = cu_header->addr_size; |
17275 | ||
e142c38c | 17276 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17277 | if (attr_address_class) |
529908cb | 17278 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17279 | else |
17280 | addr_class = DW_ADDR_none; | |
17281 | ||
2b4424c3 TT |
17282 | ULONGEST alignment = get_alignment (cu, die); |
17283 | ||
17284 | /* If the pointer size, alignment, or address class is different | |
17285 | than the default, create a type variant marked as such and set | |
17286 | the length accordingly. */ | |
17287 | if (TYPE_LENGTH (type) != byte_size | |
17288 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17289 | && alignment != TYPE_RAW_ALIGN (type)) | |
17290 | || addr_class != DW_ADDR_none) | |
c906108c | 17291 | { |
5e2b427d | 17292 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17293 | { |
314ad88d PA |
17294 | type_instance_flags type_flags |
17295 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17296 | addr_class); | |
876cecd0 TT |
17297 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17298 | == 0); | |
8b2dbe47 KB |
17299 | type = make_type_with_address_space (type, type_flags); |
17300 | } | |
17301 | else if (TYPE_LENGTH (type) != byte_size) | |
17302 | { | |
b98664d3 | 17303 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17304 | } |
2b4424c3 TT |
17305 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17306 | { | |
b98664d3 | 17307 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17308 | " - DIE at %s [in module %s]"), |
17309 | sect_offset_str (die->sect_off), | |
5e22e966 | 17310 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17311 | } |
6e70227d | 17312 | else |
9a619af0 MS |
17313 | { |
17314 | /* Should we also complain about unhandled address classes? */ | |
17315 | } | |
c906108c | 17316 | } |
8b2dbe47 KB |
17317 | |
17318 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17319 | set_type_align (type, alignment); |
f792889a | 17320 | return set_die_type (die, type, cu); |
c906108c SS |
17321 | } |
17322 | ||
17323 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17324 | the user defined type vector. */ | |
17325 | ||
f792889a | 17326 | static struct type * |
e7c27a73 | 17327 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17328 | { |
17329 | struct type *type; | |
17330 | struct type *to_type; | |
17331 | struct type *domain; | |
17332 | ||
e7c27a73 DJ |
17333 | to_type = die_type (die, cu); |
17334 | domain = die_containing_type (die, cu); | |
0d5de010 | 17335 | |
7e314c57 JK |
17336 | /* The calls above may have already set the type for this DIE. */ |
17337 | type = get_die_type (die, cu); | |
17338 | if (type) | |
17339 | return type; | |
17340 | ||
78134374 | 17341 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17342 | type = lookup_methodptr_type (to_type); |
78134374 | 17343 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17344 | { |
5e22e966 | 17345 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17346 | |
17347 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17348 | to_type->fields (), to_type->num_fields (), |
a409645d | 17349 | to_type->has_varargs ()); |
7078baeb TT |
17350 | type = lookup_methodptr_type (new_type); |
17351 | } | |
0d5de010 DJ |
17352 | else |
17353 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17354 | |
f792889a | 17355 | return set_die_type (die, type, cu); |
c906108c SS |
17356 | } |
17357 | ||
4297a3f0 | 17358 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17359 | the user defined type vector. */ |
17360 | ||
f792889a | 17361 | static struct type * |
4297a3f0 | 17362 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17363 | enum type_code refcode) |
c906108c | 17364 | { |
e7c27a73 | 17365 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17366 | struct type *type, *target_type; |
c906108c SS |
17367 | struct attribute *attr; |
17368 | ||
4297a3f0 AV |
17369 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17370 | ||
7e314c57 JK |
17371 | target_type = die_type (die, cu); |
17372 | ||
17373 | /* The die_type call above may have already set the type for this DIE. */ | |
17374 | type = get_die_type (die, cu); | |
17375 | if (type) | |
17376 | return type; | |
17377 | ||
4297a3f0 | 17378 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17379 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17380 | if (attr != nullptr) |
c906108c | 17381 | { |
529908cb | 17382 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17383 | } |
17384 | else | |
17385 | { | |
107d2387 | 17386 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17387 | } |
2b4424c3 | 17388 | maybe_set_alignment (cu, die, type); |
f792889a | 17389 | return set_die_type (die, type, cu); |
c906108c SS |
17390 | } |
17391 | ||
cf363f18 MW |
17392 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17393 | outputs DWARF type qualifiers that apply to an array, not the | |
17394 | element type. But GDB relies on the array element type to carry | |
17395 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17396 | specification. */ | |
17397 | ||
17398 | static struct type * | |
17399 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17400 | struct type *base_type, int cnst, int voltl) | |
17401 | { | |
17402 | struct type *el_type, *inner_array; | |
17403 | ||
17404 | base_type = copy_type (base_type); | |
17405 | inner_array = base_type; | |
17406 | ||
78134374 | 17407 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17408 | { |
17409 | TYPE_TARGET_TYPE (inner_array) = | |
17410 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17411 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17412 | } | |
17413 | ||
17414 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17415 | cnst |= TYPE_CONST (el_type); | |
17416 | voltl |= TYPE_VOLATILE (el_type); | |
17417 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17418 | ||
17419 | return set_die_type (die, base_type, cu); | |
17420 | } | |
17421 | ||
f792889a | 17422 | static struct type * |
e7c27a73 | 17423 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17424 | { |
f792889a | 17425 | struct type *base_type, *cv_type; |
c906108c | 17426 | |
e7c27a73 | 17427 | base_type = die_type (die, cu); |
7e314c57 JK |
17428 | |
17429 | /* The die_type call above may have already set the type for this DIE. */ | |
17430 | cv_type = get_die_type (die, cu); | |
17431 | if (cv_type) | |
17432 | return cv_type; | |
17433 | ||
2f608a3a KW |
17434 | /* In case the const qualifier is applied to an array type, the element type |
17435 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17436 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17437 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17438 | |
f792889a DJ |
17439 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17440 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17441 | } |
17442 | ||
f792889a | 17443 | static struct type * |
e7c27a73 | 17444 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17445 | { |
f792889a | 17446 | struct type *base_type, *cv_type; |
c906108c | 17447 | |
e7c27a73 | 17448 | base_type = die_type (die, cu); |
7e314c57 JK |
17449 | |
17450 | /* The die_type call above may have already set the type for this DIE. */ | |
17451 | cv_type = get_die_type (die, cu); | |
17452 | if (cv_type) | |
17453 | return cv_type; | |
17454 | ||
cf363f18 MW |
17455 | /* In case the volatile qualifier is applied to an array type, the |
17456 | element type is so qualified, not the array type (section 6.7.3 | |
17457 | of C99). */ | |
78134374 | 17458 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17459 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17460 | ||
f792889a DJ |
17461 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17462 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17463 | } |
17464 | ||
06d66ee9 TT |
17465 | /* Handle DW_TAG_restrict_type. */ |
17466 | ||
17467 | static struct type * | |
17468 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17469 | { | |
17470 | struct type *base_type, *cv_type; | |
17471 | ||
17472 | base_type = die_type (die, cu); | |
17473 | ||
17474 | /* The die_type call above may have already set the type for this DIE. */ | |
17475 | cv_type = get_die_type (die, cu); | |
17476 | if (cv_type) | |
17477 | return cv_type; | |
17478 | ||
17479 | cv_type = make_restrict_type (base_type); | |
17480 | return set_die_type (die, cv_type, cu); | |
17481 | } | |
17482 | ||
a2c2acaf MW |
17483 | /* Handle DW_TAG_atomic_type. */ |
17484 | ||
17485 | static struct type * | |
17486 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17487 | { | |
17488 | struct type *base_type, *cv_type; | |
17489 | ||
17490 | base_type = die_type (die, cu); | |
17491 | ||
17492 | /* The die_type call above may have already set the type for this DIE. */ | |
17493 | cv_type = get_die_type (die, cu); | |
17494 | if (cv_type) | |
17495 | return cv_type; | |
17496 | ||
17497 | cv_type = make_atomic_type (base_type); | |
17498 | return set_die_type (die, cv_type, cu); | |
17499 | } | |
17500 | ||
c906108c SS |
17501 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17502 | the user defined type vector. It isn't really a user defined type, | |
17503 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17504 | attribute to reference it. */ | |
17505 | ||
f792889a | 17506 | static struct type * |
e7c27a73 | 17507 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17508 | { |
5e22e966 | 17509 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17510 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17511 | struct type *type, *range_type, *index_type, *char_type; |
17512 | struct attribute *attr; | |
216a7e6b AB |
17513 | struct dynamic_prop prop; |
17514 | bool length_is_constant = true; | |
17515 | LONGEST length; | |
17516 | ||
17517 | /* There are a couple of places where bit sizes might be made use of | |
17518 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17519 | of make use of these. Handling bit sizes that are a multiple of the | |
17520 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17521 | with that problem when we have to. Warn about these attributes being | |
17522 | unsupported, then parse the type and ignore them like we always | |
17523 | have. */ | |
17524 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17525 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17526 | { | |
17527 | static bool warning_printed = false; | |
17528 | if (!warning_printed) | |
17529 | { | |
17530 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17531 | "currently supported on DW_TAG_string_type.")); | |
17532 | warning_printed = true; | |
17533 | } | |
17534 | } | |
c906108c | 17535 | |
e142c38c | 17536 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17537 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17538 | { |
17539 | /* The string length describes the location at which the length of | |
17540 | the string can be found. The size of the length field can be | |
17541 | specified with one of the attributes below. */ | |
17542 | struct type *prop_type; | |
17543 | struct attribute *len | |
17544 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17545 | if (len == nullptr) | |
17546 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17547 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17548 | { |
17549 | /* Pass 0 as the default as we know this attribute is constant | |
17550 | and the default value will not be returned. */ | |
0826b30a | 17551 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17552 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17553 | } |
17554 | else | |
17555 | { | |
17556 | /* If the size is not specified then we assume it is the size of | |
17557 | an address on this target. */ | |
293e7e51 | 17558 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17559 | } |
17560 | ||
17561 | /* Convert the attribute into a dynamic property. */ | |
17562 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17563 | length = 1; | |
17564 | else | |
17565 | length_is_constant = false; | |
17566 | } | |
17567 | else if (attr != nullptr) | |
17568 | { | |
17569 | /* This DW_AT_string_length just contains the length with no | |
17570 | indirection. There's no need to create a dynamic property in this | |
17571 | case. Pass 0 for the default value as we know it will not be | |
17572 | returned in this case. */ | |
0826b30a | 17573 | length = attr->constant_value (0); |
216a7e6b AB |
17574 | } |
17575 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17576 | { |
216a7e6b | 17577 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17578 | length = attr->constant_value (1); |
c906108c SS |
17579 | } |
17580 | else | |
17581 | { | |
216a7e6b AB |
17582 | /* Use 1 as a fallback length if we have nothing else. */ |
17583 | length = 1; | |
c906108c | 17584 | } |
6ccb9162 | 17585 | |
46bf5051 | 17586 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17587 | if (length_is_constant) |
17588 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17589 | else | |
17590 | { | |
17591 | struct dynamic_prop low_bound; | |
17592 | ||
8c2e4e06 | 17593 | low_bound.set_const_val (1); |
216a7e6b AB |
17594 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17595 | } | |
3b7538c0 UW |
17596 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17597 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17598 | |
f792889a | 17599 | return set_die_type (die, type, cu); |
c906108c SS |
17600 | } |
17601 | ||
4d804846 JB |
17602 | /* Assuming that DIE corresponds to a function, returns nonzero |
17603 | if the function is prototyped. */ | |
17604 | ||
17605 | static int | |
17606 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17607 | { | |
17608 | struct attribute *attr; | |
17609 | ||
17610 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17611 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17612 | return 1; |
17613 | ||
17614 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17615 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17616 | languages that allow unprototyped functions (Eg: Objective C). |
17617 | For all other languages, assume that functions are always | |
17618 | prototyped. */ | |
17619 | if (cu->language != language_c | |
17620 | && cu->language != language_objc | |
17621 | && cu->language != language_opencl) | |
17622 | return 1; | |
17623 | ||
17624 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17625 | prototyped and unprototyped functions; default to prototyped, | |
17626 | since that is more common in modern code (and RealView warns | |
17627 | about unprototyped functions). */ | |
17628 | if (producer_is_realview (cu->producer)) | |
17629 | return 1; | |
17630 | ||
17631 | return 0; | |
17632 | } | |
17633 | ||
c906108c SS |
17634 | /* Handle DIES due to C code like: |
17635 | ||
17636 | struct foo | |
c5aa993b JM |
17637 | { |
17638 | int (*funcp)(int a, long l); | |
17639 | int b; | |
17640 | }; | |
c906108c | 17641 | |
0963b4bd | 17642 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17643 | |
f792889a | 17644 | static struct type * |
e7c27a73 | 17645 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17646 | { |
5e22e966 | 17647 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17648 | struct type *type; /* Type that this function returns. */ |
17649 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17650 | struct attribute *attr; |
17651 | ||
e7c27a73 | 17652 | type = die_type (die, cu); |
7e314c57 JK |
17653 | |
17654 | /* The die_type call above may have already set the type for this DIE. */ | |
17655 | ftype = get_die_type (die, cu); | |
17656 | if (ftype) | |
17657 | return ftype; | |
17658 | ||
0c8b41f1 | 17659 | ftype = lookup_function_type (type); |
c906108c | 17660 | |
4d804846 | 17661 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17662 | ftype->set_is_prototyped (true); |
c906108c | 17663 | |
c055b101 CV |
17664 | /* Store the calling convention in the type if it's available in |
17665 | the subroutine die. Otherwise set the calling convention to | |
17666 | the default value DW_CC_normal. */ | |
17667 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 17668 | if (attr != nullptr |
529908cb | 17669 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 17670 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 17671 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
17672 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17673 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17674 | else | |
17675 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17676 | |
743649fd MW |
17677 | /* Record whether the function returns normally to its caller or not |
17678 | if the DWARF producer set that information. */ | |
17679 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 17680 | if (attr && attr->as_boolean ()) |
743649fd MW |
17681 | TYPE_NO_RETURN (ftype) = 1; |
17682 | ||
76c10ea2 GM |
17683 | /* We need to add the subroutine type to the die immediately so |
17684 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17685 | declared as the same subroutine type. */ |
76c10ea2 | 17686 | set_die_type (die, ftype, cu); |
6e70227d | 17687 | |
639d11d3 | 17688 | if (die->child != NULL) |
c906108c | 17689 | { |
bb5ed363 | 17690 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17691 | struct die_info *child_die; |
8072405b | 17692 | int nparams, iparams; |
c906108c SS |
17693 | |
17694 | /* Count the number of parameters. | |
dda83cd7 SM |
17695 | FIXME: GDB currently ignores vararg functions, but knows about |
17696 | vararg member functions. */ | |
8072405b | 17697 | nparams = 0; |
639d11d3 | 17698 | child_die = die->child; |
c906108c SS |
17699 | while (child_die && child_die->tag) |
17700 | { | |
17701 | if (child_die->tag == DW_TAG_formal_parameter) | |
17702 | nparams++; | |
17703 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17704 | ftype->set_has_varargs (true); |
17705 | ||
436c571c | 17706 | child_die = child_die->sibling; |
c906108c SS |
17707 | } |
17708 | ||
17709 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17710 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17711 | ftype->set_fields |
17712 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17713 | |
8072405b JK |
17714 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17715 | even if we error out during the parameters reading below. */ | |
17716 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17717 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17718 | |
17719 | iparams = 0; | |
639d11d3 | 17720 | child_die = die->child; |
c906108c SS |
17721 | while (child_die && child_die->tag) |
17722 | { | |
17723 | if (child_die->tag == DW_TAG_formal_parameter) | |
17724 | { | |
3ce3b1ba PA |
17725 | struct type *arg_type; |
17726 | ||
17727 | /* DWARF version 2 has no clean way to discern C++ | |
17728 | static and non-static member functions. G++ helps | |
17729 | GDB by marking the first parameter for non-static | |
17730 | member functions (which is the this pointer) as | |
17731 | artificial. We pass this information to | |
17732 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17733 | ||
17734 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17735 | 4.5 does not yet generate. */ | |
e142c38c | 17736 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17737 | if (attr != nullptr) |
c45bc3f8 | 17738 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 17739 | else |
9c37b5ae | 17740 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17741 | arg_type = die_type (child_die, cu); |
17742 | ||
17743 | /* RealView does not mark THIS as const, which the testsuite | |
17744 | expects. GCC marks THIS as const in method definitions, | |
17745 | but not in the class specifications (GCC PR 43053). */ | |
17746 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17747 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17748 | { | |
17749 | int is_this = 0; | |
17750 | struct dwarf2_cu *arg_cu = cu; | |
17751 | const char *name = dwarf2_name (child_die, cu); | |
17752 | ||
17753 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17754 | if (attr != nullptr) |
3ce3b1ba PA |
17755 | { |
17756 | /* If the compiler emits this, use it. */ | |
17757 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17758 | is_this = 1; | |
17759 | } | |
17760 | else if (name && strcmp (name, "this") == 0) | |
17761 | /* Function definitions will have the argument names. */ | |
17762 | is_this = 1; | |
17763 | else if (name == NULL && iparams == 0) | |
17764 | /* Declarations may not have the names, so like | |
17765 | elsewhere in GDB, assume an artificial first | |
17766 | argument is "this". */ | |
17767 | is_this = 1; | |
17768 | ||
17769 | if (is_this) | |
17770 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17771 | arg_type, 0); | |
17772 | } | |
17773 | ||
5d14b6e5 | 17774 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17775 | iparams++; |
17776 | } | |
436c571c | 17777 | child_die = child_die->sibling; |
c906108c SS |
17778 | } |
17779 | } | |
17780 | ||
76c10ea2 | 17781 | return ftype; |
c906108c SS |
17782 | } |
17783 | ||
f792889a | 17784 | static struct type * |
e7c27a73 | 17785 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17786 | { |
5e22e966 | 17787 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17788 | const char *name = NULL; |
3c8e0968 | 17789 | struct type *this_type, *target_type; |
c906108c | 17790 | |
94af9270 | 17791 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 17792 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 17793 | this_type->set_target_is_stub (true); |
f792889a | 17794 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17795 | target_type = die_type (die, cu); |
17796 | if (target_type != this_type) | |
17797 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17798 | else | |
17799 | { | |
17800 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17801 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17802 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17803 | "- DIE at %s [in module %s]"), |
17804 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17805 | TYPE_TARGET_TYPE (this_type) = NULL; |
17806 | } | |
e4003a34 TV |
17807 | if (name == NULL) |
17808 | { | |
17809 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17810 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17811 | Handle these by just returning the target type, rather than | |
17812 | constructing an anonymous typedef type and trying to handle this | |
17813 | elsewhere. */ | |
17814 | set_die_type (die, target_type, cu); | |
17815 | return target_type; | |
17816 | } | |
f792889a | 17817 | return this_type; |
c906108c SS |
17818 | } |
17819 | ||
a625a8c9 TT |
17820 | /* Helper for get_dwarf2_rational_constant that computes the value of |
17821 | a given gmp_mpz given an attribute. */ | |
17822 | ||
17823 | static void | |
17824 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
17825 | { | |
17826 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
17827 | location expression that pushes an implicit value. */ | |
17828 | if (attr->form == DW_FORM_exprloc) | |
17829 | { | |
17830 | dwarf_block *blk = attr->as_block (); | |
17831 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
17832 | { | |
17833 | uint64_t len; | |
17834 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
17835 | blk->data + blk->size, | |
17836 | &len); | |
17837 | if (ptr - blk->data + len <= blk->size) | |
17838 | { | |
17839 | mpz_import (value->val, len, | |
17840 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17841 | 1, 0, 0, ptr); | |
17842 | return; | |
17843 | } | |
17844 | } | |
17845 | ||
17846 | /* On failure set it to 1. */ | |
17847 | *value = gdb_mpz (1); | |
17848 | } | |
17849 | else if (attr->form_is_block ()) | |
17850 | { | |
17851 | dwarf_block *blk = attr->as_block (); | |
17852 | mpz_import (value->val, blk->size, | |
17853 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17854 | 1, 0, 0, blk->data); | |
17855 | } | |
17856 | else | |
17857 | *value = gdb_mpz (attr->constant_value (1)); | |
17858 | } | |
17859 | ||
09584414 JB |
17860 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
17861 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
17862 | ||
17863 | If the numerator and/or numerator attribute is missing, | |
17864 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
17865 | untouched. */ | |
17866 | ||
17867 | static void | |
17868 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 17869 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
17870 | { |
17871 | struct attribute *num_attr, *denom_attr; | |
17872 | ||
17873 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
17874 | if (num_attr == nullptr) | |
17875 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
17876 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
17877 | ||
17878 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
17879 | if (denom_attr == nullptr) | |
17880 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
17881 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
17882 | ||
17883 | if (num_attr == nullptr || denom_attr == nullptr) | |
17884 | return; | |
17885 | ||
a625a8c9 TT |
17886 | get_mpz (cu, numerator, num_attr); |
17887 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
17888 | } |
17889 | ||
17890 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
17891 | rational constant, rather than a signed one. | |
17892 | ||
17893 | If the rational constant has a negative value, a complaint | |
17894 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
17895 | ||
17896 | static void | |
17897 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
17898 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
17899 | gdb_mpz *numerator, |
17900 | gdb_mpz *denominator) | |
09584414 | 17901 | { |
5cde1d82 TT |
17902 | gdb_mpz num (1); |
17903 | gdb_mpz denom (1); | |
09584414 JB |
17904 | |
17905 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 17906 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 17907 | { |
5cde1d82 TT |
17908 | mpz_neg (num.val, num.val); |
17909 | mpz_neg (denom.val, denom.val); | |
09584414 | 17910 | } |
5cde1d82 | 17911 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
17912 | { |
17913 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
17914 | " in DIE at %s"), | |
17915 | sect_offset_str (die->sect_off)); | |
17916 | return; | |
17917 | } | |
5cde1d82 | 17918 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
17919 | { |
17920 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
17921 | " in DIE at %s"), | |
17922 | sect_offset_str (die->sect_off)); | |
17923 | return; | |
17924 | } | |
17925 | ||
5cde1d82 TT |
17926 | *numerator = std::move (num); |
17927 | *denominator = std::move (denom); | |
09584414 JB |
17928 | } |
17929 | ||
bbcdf9ab TT |
17930 | /* Assuming that ENCODING is a string whose contents starting at the |
17931 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
17932 | number and set RESULT to the value. K is updated to point to the | |
17933 | character immediately following the number. | |
17934 | ||
17935 | If the string does not conform to the format described above, false | |
17936 | is returned, and K may or may not be changed. */ | |
17937 | ||
17938 | static bool | |
17939 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
17940 | { | |
17941 | /* The next character should be an underscore ('_') followed | |
17942 | by a digit. */ | |
17943 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
17944 | return false; | |
17945 | ||
17946 | /* Skip the underscore. */ | |
17947 | k++; | |
17948 | int start = k; | |
17949 | ||
17950 | /* Determine the number of digits for our number. */ | |
17951 | while (isdigit (encoding[k])) | |
17952 | k++; | |
17953 | if (k == start) | |
17954 | return false; | |
17955 | ||
17956 | std::string copy (&encoding[start], k - start); | |
17957 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
17958 | return false; | |
17959 | ||
17960 | return true; | |
17961 | } | |
17962 | ||
17963 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
17964 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
17965 | DENOM, update OFFSET, and return true on success. Return false on | |
17966 | failure. */ | |
17967 | ||
17968 | static bool | |
17969 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
17970 | gdb_mpz *num, gdb_mpz *denom) | |
17971 | { | |
17972 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
17973 | return false; | |
17974 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
17975 | } | |
17976 | ||
09584414 | 17977 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
17978 | of the corresponding TYPE by setting its type-specific data. CU is |
17979 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
17980 | encodings. It is nullptr if the GNAT encoding should be | |
17981 | ignored. */ | |
09584414 JB |
17982 | |
17983 | static void | |
bbcdf9ab TT |
17984 | finish_fixed_point_type (struct type *type, const char *suffix, |
17985 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 17986 | { |
09584414 JB |
17987 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
17988 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
17989 | ||
bbcdf9ab TT |
17990 | /* If GNAT encodings are preferred, don't examine the |
17991 | attributes. */ | |
17992 | struct attribute *attr = nullptr; | |
17993 | if (suffix == nullptr) | |
17994 | { | |
17995 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
17996 | if (attr == nullptr) | |
17997 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
17998 | if (attr == nullptr) | |
17999 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18000 | } | |
09584414 | 18001 | |
5cde1d82 TT |
18002 | /* Numerator and denominator of our fixed-point type's scaling factor. |
18003 | The default is a scaling factor of 1, which we use as a fallback | |
18004 | when we are not able to decode it (problem with the debugging info, | |
18005 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18006 | allows us to at least print the unscaled value, which might still | |
18007 | be useful to a user. */ | |
18008 | gdb_mpz scale_num (1); | |
18009 | gdb_mpz scale_denom (1); | |
18010 | ||
09584414 JB |
18011 | if (attr == nullptr) |
18012 | { | |
bbcdf9ab TT |
18013 | int offset = 0; |
18014 | if (suffix != nullptr | |
18015 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18016 | &scale_denom) | |
18017 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18018 | second ratio is the 'small value. In this situation, we | |
18019 | want the second value. */ | |
18020 | && (suffix[offset] != '_' | |
18021 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18022 | &scale_denom))) | |
18023 | { | |
18024 | /* Found it. */ | |
18025 | } | |
18026 | else | |
18027 | { | |
18028 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18029 | and hope for the best. At least the user will be able to | |
18030 | see the encoded value. */ | |
18031 | scale_num = 1; | |
18032 | scale_denom = 1; | |
18033 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18034 | sect_offset_str (die->sect_off)); | |
18035 | } | |
09584414 JB |
18036 | } |
18037 | else if (attr->name == DW_AT_binary_scale) | |
18038 | { | |
18039 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18040 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18041 | |
5cde1d82 | 18042 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18043 | } |
18044 | else if (attr->name == DW_AT_decimal_scale) | |
18045 | { | |
18046 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18047 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18048 | |
5cde1d82 | 18049 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18050 | } |
18051 | else if (attr->name == DW_AT_small) | |
18052 | { | |
18053 | struct die_info *scale_die; | |
18054 | struct dwarf2_cu *scale_cu = cu; | |
18055 | ||
18056 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18057 | if (scale_die->tag == DW_TAG_constant) | |
18058 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18059 | &scale_num, &scale_denom); | |
18060 | else | |
18061 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18062 | " (DIE at %s)"), | |
18063 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18064 | } | |
18065 | else | |
18066 | { | |
18067 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18068 | " (DIE at %s)"), | |
18069 | dwarf_attr_name (attr->name), | |
18070 | sect_offset_str (die->sect_off)); | |
18071 | } | |
18072 | ||
2a12c336 | 18073 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18074 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18075 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18076 | mpq_canonicalize (scaling_factor.val); |
18077 | } | |
18078 | ||
bbcdf9ab TT |
18079 | /* The gnat-encoding suffix for fixed point. */ |
18080 | ||
18081 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18082 | ||
18083 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18084 | "XF" suffix of the name. The text after this is what encodes the | |
18085 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18086 | ||
18087 | static const char * | |
18088 | gnat_encoded_fixed_point_type_info (const char *name) | |
18089 | { | |
18090 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18091 | } | |
18092 | ||
9b790ce7 UW |
18093 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18094 | (which may be different from NAME) to the architecture back-end to allow | |
18095 | it to guess the correct format if necessary. */ | |
18096 | ||
18097 | static struct type * | |
18098 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18099 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18100 | { |
08feed99 | 18101 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18102 | const struct floatformat **format; |
18103 | struct type *type; | |
18104 | ||
18105 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18106 | if (format) | |
103a685e | 18107 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18108 | else |
77b7c781 | 18109 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18110 | |
18111 | return type; | |
18112 | } | |
18113 | ||
eb77c9df AB |
18114 | /* Allocate an integer type of size BITS and name NAME. */ |
18115 | ||
18116 | static struct type * | |
18117 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18118 | int bits, int unsigned_p, const char *name) | |
18119 | { | |
18120 | struct type *type; | |
18121 | ||
18122 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18123 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18124 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18125 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18126 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18127 | type = objfile_type (objfile)->builtin_void; |
18128 | else | |
18129 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18130 | ||
18131 | return type; | |
18132 | } | |
18133 | ||
09584414 JB |
18134 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18135 | a constant rational, where both the numerator and denominator | |
18136 | are equal to zero. | |
18137 | ||
18138 | CU is the DIE's Compilation Unit. */ | |
18139 | ||
18140 | static bool | |
18141 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18142 | struct dwarf2_cu *cu) | |
18143 | { | |
18144 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18145 | if (attr == nullptr) | |
18146 | return false; | |
18147 | ||
18148 | struct dwarf2_cu *scale_cu = cu; | |
18149 | struct die_info *scale_die | |
18150 | = follow_die_ref (die, attr, &scale_cu); | |
18151 | ||
18152 | if (scale_die->tag != DW_TAG_constant) | |
18153 | return false; | |
18154 | ||
5cde1d82 | 18155 | gdb_mpz num (1), denom (1); |
09584414 | 18156 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18157 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18158 | } |
18159 | ||
8bdc1658 AB |
18160 | /* Initialise and return a floating point type of size BITS suitable for |
18161 | use as a component of a complex number. The NAME_HINT is passed through | |
18162 | when initialising the floating point type and is the name of the complex | |
18163 | type. | |
18164 | ||
18165 | As DWARF doesn't currently provide an explicit name for the components | |
18166 | of a complex number, but it can be helpful to have these components | |
18167 | named, we try to select a suitable name based on the size of the | |
18168 | component. */ | |
18169 | static struct type * | |
18170 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18171 | struct objfile *objfile, | |
103a685e TT |
18172 | int bits, const char *name_hint, |
18173 | enum bfd_endian byte_order) | |
8bdc1658 | 18174 | { |
08feed99 | 18175 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18176 | struct type *tt = nullptr; |
18177 | ||
35add35e AB |
18178 | /* Try to find a suitable floating point builtin type of size BITS. |
18179 | We're going to use the name of this type as the name for the complex | |
18180 | target type that we are about to create. */ | |
1db455a7 | 18181 | switch (cu->language) |
8bdc1658 | 18182 | { |
1db455a7 AB |
18183 | case language_fortran: |
18184 | switch (bits) | |
18185 | { | |
18186 | case 32: | |
18187 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18188 | break; | |
18189 | case 64: | |
18190 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18191 | break; | |
18192 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18193 | case 128: | |
18194 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18195 | break; | |
18196 | } | |
8bdc1658 | 18197 | break; |
1db455a7 AB |
18198 | default: |
18199 | switch (bits) | |
18200 | { | |
18201 | case 32: | |
18202 | tt = builtin_type (gdbarch)->builtin_float; | |
18203 | break; | |
18204 | case 64: | |
18205 | tt = builtin_type (gdbarch)->builtin_double; | |
18206 | break; | |
18207 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18208 | case 128: | |
18209 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18210 | break; | |
18211 | } | |
8bdc1658 AB |
18212 | break; |
18213 | } | |
18214 | ||
35add35e AB |
18215 | /* If the type we found doesn't match the size we were looking for, then |
18216 | pretend we didn't find a type at all, the complex target type we | |
18217 | create will then be nameless. */ | |
a12e5744 | 18218 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18219 | tt = nullptr; |
18220 | ||
7d93a1e0 | 18221 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18222 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18223 | } |
18224 | ||
c906108c SS |
18225 | /* Find a representation of a given base type and install |
18226 | it in the TYPE field of the die. */ | |
18227 | ||
f792889a | 18228 | static struct type * |
e7c27a73 | 18229 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18230 | { |
5e22e966 | 18231 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18232 | struct type *type; |
18233 | struct attribute *attr; | |
19f392bc | 18234 | int encoding = 0, bits = 0; |
15d034d0 | 18235 | const char *name; |
34877895 | 18236 | gdbarch *arch; |
c906108c | 18237 | |
e142c38c | 18238 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18239 | if (attr != nullptr && attr->form_is_constant ()) |
18240 | encoding = attr->constant_value (0); | |
e142c38c | 18241 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18242 | if (attr != nullptr) |
529908cb | 18243 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18244 | name = dwarf2_name (die, cu); |
6ccb9162 | 18245 | if (!name) |
34877895 | 18246 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18247 | |
08feed99 | 18248 | arch = objfile->arch (); |
103a685e TT |
18249 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18250 | ||
34877895 | 18251 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18252 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18253 | { |
529908cb | 18254 | int endianity = attr->constant_value (0); |
103a685e TT |
18255 | |
18256 | switch (endianity) | |
18257 | { | |
18258 | case DW_END_big: | |
18259 | byte_order = BFD_ENDIAN_BIG; | |
18260 | break; | |
18261 | case DW_END_little: | |
18262 | byte_order = BFD_ENDIAN_LITTLE; | |
18263 | break; | |
18264 | default: | |
18265 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18266 | break; | |
18267 | } | |
18268 | } | |
6ccb9162 | 18269 | |
09584414 JB |
18270 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18271 | && cu->language == language_ada | |
18272 | && has_zero_over_zero_small_attribute (die, cu)) | |
18273 | { | |
18274 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18275 | the scaling factor is represented as fraction whose value | |
18276 | does not make sense (zero divided by zero), so we should | |
18277 | normally never see these. However, there is a small category | |
18278 | of fixed point types for which GNAT is unable to provide | |
18279 | the scaling factor via the standard DWARF mechanisms, and | |
18280 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18281 | This is likely what this DIE is about. */ |
09584414 JB |
18282 | encoding = (encoding == DW_ATE_signed_fixed |
18283 | ? DW_ATE_signed | |
18284 | : DW_ATE_unsigned); | |
18285 | } | |
18286 | ||
bbcdf9ab TT |
18287 | /* With GNAT encodings, fixed-point information will be encoded in |
18288 | the type name. Note that this can also occur with the above | |
18289 | zero-over-zero case, which is why this is a separate "if" rather | |
18290 | than an "else if". */ | |
18291 | const char *gnat_encoding_suffix = nullptr; | |
18292 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18293 | && cu->language == language_ada | |
18294 | && name != nullptr) | |
18295 | { | |
18296 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18297 | if (gnat_encoding_suffix != nullptr) | |
18298 | { | |
18299 | gdb_assert (startswith (gnat_encoding_suffix, | |
18300 | GNAT_FIXED_POINT_SUFFIX)); | |
18301 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18302 | name, gnat_encoding_suffix - name); | |
18303 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18304 | "XF". */ | |
18305 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18306 | ||
18307 | encoding = (encoding == DW_ATE_signed | |
18308 | ? DW_ATE_signed_fixed | |
18309 | : DW_ATE_unsigned_fixed); | |
18310 | } | |
18311 | } | |
18312 | ||
6ccb9162 | 18313 | switch (encoding) |
c906108c | 18314 | { |
6ccb9162 UW |
18315 | case DW_ATE_address: |
18316 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18317 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18318 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18319 | break; |
18320 | case DW_ATE_boolean: | |
19f392bc | 18321 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18322 | break; |
18323 | case DW_ATE_complex_float: | |
103a685e TT |
18324 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18325 | byte_order); | |
78134374 | 18326 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18327 | { |
18328 | if (name == nullptr) | |
18329 | { | |
18330 | struct obstack *obstack | |
5e22e966 | 18331 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18332 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18333 | nullptr); |
18334 | } | |
18335 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18336 | } | |
18337 | else | |
18338 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18339 | break; |
18340 | case DW_ATE_decimal_float: | |
19f392bc | 18341 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18342 | break; |
18343 | case DW_ATE_float: | |
103a685e | 18344 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18345 | break; |
18346 | case DW_ATE_signed: | |
eb77c9df | 18347 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18348 | break; |
18349 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18350 | if (cu->language == language_fortran |
18351 | && name | |
61012eef | 18352 | && startswith (name, "character(")) |
19f392bc UW |
18353 | type = init_character_type (objfile, bits, 1, name); |
18354 | else | |
eb77c9df | 18355 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18356 | break; |
18357 | case DW_ATE_signed_char: | |
6e70227d | 18358 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18359 | || cu->language == language_pascal |
18360 | || cu->language == language_fortran) | |
19f392bc UW |
18361 | type = init_character_type (objfile, bits, 0, name); |
18362 | else | |
eb77c9df | 18363 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18364 | break; |
18365 | case DW_ATE_unsigned_char: | |
868a0084 | 18366 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18367 | || cu->language == language_pascal |
c44af4eb TT |
18368 | || cu->language == language_fortran |
18369 | || cu->language == language_rust) | |
19f392bc UW |
18370 | type = init_character_type (objfile, bits, 1, name); |
18371 | else | |
eb77c9df | 18372 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18373 | break; |
75079b2b | 18374 | case DW_ATE_UTF: |
53e710ac | 18375 | { |
53e710ac PA |
18376 | if (bits == 16) |
18377 | type = builtin_type (arch)->builtin_char16; | |
18378 | else if (bits == 32) | |
18379 | type = builtin_type (arch)->builtin_char32; | |
18380 | else | |
18381 | { | |
b98664d3 | 18382 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18383 | bits); |
eb77c9df | 18384 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18385 | } |
18386 | return set_die_type (die, type, cu); | |
18387 | } | |
75079b2b | 18388 | break; |
09584414 JB |
18389 | case DW_ATE_signed_fixed: |
18390 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18391 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18392 | break; |
18393 | case DW_ATE_unsigned_fixed: | |
18394 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18395 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18396 | break; |
75079b2b | 18397 | |
6ccb9162 | 18398 | default: |
b98664d3 | 18399 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18400 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18401 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18402 | break; |
c906108c | 18403 | } |
6ccb9162 | 18404 | |
0114d602 | 18405 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18406 | type->set_has_no_signedness (true); |
0114d602 | 18407 | |
2b4424c3 TT |
18408 | maybe_set_alignment (cu, die, type); |
18409 | ||
db558e34 | 18410 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18411 | |
20a5fcbd TT |
18412 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18413 | { | |
18414 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18415 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18416 | { |
529908cb | 18417 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18418 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18419 | /* Only use the attributes if they make sense together. */ | |
18420 | if (attr == nullptr | |
529908cb TT |
18421 | || (attr->as_unsigned () + real_bit_size |
18422 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18423 | { |
18424 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18425 | = real_bit_size; | |
18426 | if (attr != nullptr) | |
18427 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18428 | = attr->as_unsigned (); |
20a5fcbd TT |
18429 | } |
18430 | } | |
18431 | } | |
18432 | ||
f792889a | 18433 | return set_die_type (die, type, cu); |
c906108c SS |
18434 | } |
18435 | ||
80180f79 SA |
18436 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18437 | resulting value of the attribute into struct bound_prop. | |
18438 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18439 | ||
18440 | static int | |
18441 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18442 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18443 | struct type *default_type) | |
80180f79 SA |
18444 | { |
18445 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18446 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18447 | struct objfile *objfile = per_objfile->objfile; |
18448 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18449 | |
9a49df9d AB |
18450 | gdb_assert (default_type != NULL); |
18451 | ||
80180f79 SA |
18452 | if (attr == NULL || prop == NULL) |
18453 | return 0; | |
18454 | ||
4fc6c0d5 | 18455 | if (attr->form_is_block ()) |
80180f79 | 18456 | { |
8d749320 | 18457 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18458 | baton->property_type = default_type; |
80180f79 | 18459 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18460 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18461 | |
18462 | struct dwarf_block *block = attr->as_block (); | |
18463 | baton->locexpr.size = block->size; | |
18464 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18465 | switch (attr->name) |
18466 | { | |
18467 | case DW_AT_string_length: | |
18468 | baton->locexpr.is_reference = true; | |
18469 | break; | |
18470 | default: | |
18471 | baton->locexpr.is_reference = false; | |
18472 | break; | |
18473 | } | |
8c2e4e06 SM |
18474 | |
18475 | prop->set_locexpr (baton); | |
18476 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18477 | } |
cd6c91b4 | 18478 | else if (attr->form_is_ref ()) |
80180f79 SA |
18479 | { |
18480 | struct dwarf2_cu *target_cu = cu; | |
18481 | struct die_info *target_die; | |
18482 | struct attribute *target_attr; | |
18483 | ||
18484 | target_die = follow_die_ref (die, attr, &target_cu); | |
18485 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18486 | if (target_attr == NULL) |
18487 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18488 | target_cu); | |
80180f79 SA |
18489 | if (target_attr == NULL) |
18490 | return 0; | |
18491 | ||
df25ebbd | 18492 | switch (target_attr->name) |
80180f79 | 18493 | { |
df25ebbd | 18494 | case DW_AT_location: |
cd6c91b4 | 18495 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18496 | { |
8d749320 | 18497 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18498 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18499 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18500 | prop->set_loclist (baton); |
18501 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18502 | } |
4fc6c0d5 | 18503 | else if (target_attr->form_is_block ()) |
df25ebbd | 18504 | { |
8d749320 | 18505 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18506 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18507 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18508 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18509 | struct dwarf_block *block = target_attr->as_block (); |
18510 | baton->locexpr.size = block->size; | |
18511 | baton->locexpr.data = block->data; | |
9a49df9d | 18512 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18513 | prop->set_locexpr (baton); |
18514 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18515 | } |
18516 | else | |
18517 | { | |
18518 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18519 | "dynamic property"); | |
18520 | return 0; | |
18521 | } | |
18522 | break; | |
18523 | case DW_AT_data_member_location: | |
18524 | { | |
18525 | LONGEST offset; | |
18526 | ||
18527 | if (!handle_data_member_location (target_die, target_cu, | |
18528 | &offset)) | |
18529 | return 0; | |
18530 | ||
8d749320 | 18531 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18532 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18533 | target_cu); |
df25ebbd JB |
18534 | baton->offset_info.offset = offset; |
18535 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18536 | prop->set_addr_offset (baton); |
df25ebbd JB |
18537 | break; |
18538 | } | |
80180f79 SA |
18539 | } |
18540 | } | |
cd6c91b4 | 18541 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18542 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18543 | else |
18544 | { | |
18545 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18546 | dwarf2_name (die, cu)); | |
18547 | return 0; | |
18548 | } | |
18549 | ||
18550 | return 1; | |
18551 | } | |
18552 | ||
09ba997f | 18553 | /* See read.h. */ |
9a49df9d | 18554 | |
09ba997f | 18555 | struct type * |
293e7e51 | 18556 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18557 | { |
9a49df9d AB |
18558 | struct type *int_type; |
18559 | ||
18560 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18561 | #define TRY_TYPE(F) \ |
18562 | int_type = (unsigned_p \ | |
18563 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18564 | : objfile_type (objfile)->builtin_ ## F); \ | |
18565 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18566 | return int_type |
18567 | ||
18568 | TRY_TYPE (char); | |
18569 | TRY_TYPE (short); | |
18570 | TRY_TYPE (int); | |
18571 | TRY_TYPE (long); | |
18572 | TRY_TYPE (long_long); | |
18573 | ||
18574 | #undef TRY_TYPE | |
18575 | ||
18576 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18577 | } | |
18578 | ||
09ba997f | 18579 | /* See read.h. */ |
11a8b164 | 18580 | |
09ba997f | 18581 | struct type * |
293e7e51 | 18582 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18583 | { |
293e7e51 SM |
18584 | int addr_size = this->per_cu->addr_size (); |
18585 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18586 | } |
18587 | ||
b86352cf AB |
18588 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18589 | present (which is valid) then compute the default type based on the | |
18590 | compilation units address size. */ | |
18591 | ||
18592 | static struct type * | |
18593 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18594 | { | |
18595 | struct type *index_type = die_type (die, cu); | |
18596 | ||
18597 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18598 | without specifying a base type. | |
18599 | In that case, the base type must be set to the type of | |
18600 | the lower bound, upper bound or count, in that order, if any of these | |
18601 | three attributes references an object that has a type. | |
18602 | If no base type is found, the Dwarf-2 specifications say that | |
18603 | a signed integer type of size equal to the size of an address should | |
18604 | be used. | |
18605 | For the following C code: `extern char gdb_int [];' | |
18606 | GCC produces an empty range DIE. | |
18607 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18608 | high bound or count are not yet handled by this code. */ | |
78134374 | 18609 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18610 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18611 | |
18612 | return index_type; | |
18613 | } | |
18614 | ||
a02abb62 JB |
18615 | /* Read the given DW_AT_subrange DIE. */ |
18616 | ||
f792889a | 18617 | static struct type * |
a02abb62 JB |
18618 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18619 | { | |
4c9ad8c2 | 18620 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18621 | struct type *range_type; |
18622 | struct attribute *attr; | |
729efb13 | 18623 | struct dynamic_prop low, high; |
4fae6e18 | 18624 | int low_default_is_valid; |
c451ebe5 | 18625 | int high_bound_is_count = 0; |
15d034d0 | 18626 | const char *name; |
d359392f | 18627 | ULONGEST negative_mask; |
e77813c8 | 18628 | |
b86352cf AB |
18629 | orig_base_type = read_subrange_index_type (die, cu); |
18630 | ||
4c9ad8c2 TT |
18631 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18632 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18633 | creating the range type, but we use the result of check_typedef | |
18634 | when examining properties of the type. */ | |
18635 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18636 | |
7e314c57 JK |
18637 | /* The die_type call above may have already set the type for this DIE. */ |
18638 | range_type = get_die_type (die, cu); | |
18639 | if (range_type) | |
18640 | return range_type; | |
18641 | ||
8c2e4e06 | 18642 | high.set_const_val (0); |
729efb13 | 18643 | |
4fae6e18 JK |
18644 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18645 | omitting DW_AT_lower_bound. */ | |
18646 | switch (cu->language) | |
6e70227d | 18647 | { |
4fae6e18 JK |
18648 | case language_c: |
18649 | case language_cplus: | |
8c2e4e06 | 18650 | low.set_const_val (0); |
4fae6e18 JK |
18651 | low_default_is_valid = 1; |
18652 | break; | |
18653 | case language_fortran: | |
8c2e4e06 | 18654 | low.set_const_val (1); |
4fae6e18 JK |
18655 | low_default_is_valid = 1; |
18656 | break; | |
18657 | case language_d: | |
4fae6e18 | 18658 | case language_objc: |
c44af4eb | 18659 | case language_rust: |
8c2e4e06 | 18660 | low.set_const_val (0); |
4fae6e18 JK |
18661 | low_default_is_valid = (cu->header.version >= 4); |
18662 | break; | |
18663 | case language_ada: | |
18664 | case language_m2: | |
18665 | case language_pascal: | |
8c2e4e06 | 18666 | low.set_const_val (1); |
4fae6e18 JK |
18667 | low_default_is_valid = (cu->header.version >= 4); |
18668 | break; | |
18669 | default: | |
8c2e4e06 | 18670 | low.set_const_val (0); |
4fae6e18 JK |
18671 | low_default_is_valid = 0; |
18672 | break; | |
a02abb62 JB |
18673 | } |
18674 | ||
e142c38c | 18675 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18676 | if (attr != nullptr) |
9a49df9d | 18677 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18678 | else if (!low_default_is_valid) |
b98664d3 | 18679 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18680 | "- DIE at %s [in module %s]"), |
18681 | sect_offset_str (die->sect_off), | |
5e22e966 | 18682 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18683 | |
506f5c41 TV |
18684 | struct attribute *attr_ub, *attr_count; |
18685 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18686 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18687 | { |
506f5c41 | 18688 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18689 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18690 | { |
c451ebe5 | 18691 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18692 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18693 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18694 | else |
18695 | high_bound_is_count = 1; | |
c2ff108b | 18696 | } |
506f5c41 TV |
18697 | else |
18698 | { | |
18699 | if (attr_ub != NULL) | |
18700 | complaint (_("Unresolved DW_AT_upper_bound " | |
18701 | "- DIE at %s [in module %s]"), | |
18702 | sect_offset_str (die->sect_off), | |
5e22e966 | 18703 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18704 | if (attr_count != NULL) |
18705 | complaint (_("Unresolved DW_AT_count " | |
18706 | "- DIE at %s [in module %s]"), | |
18707 | sect_offset_str (die->sect_off), | |
5e22e966 | 18708 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18709 | } |
e77813c8 | 18710 | } |
a02abb62 | 18711 | |
4e962e74 TT |
18712 | LONGEST bias = 0; |
18713 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18714 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18715 | bias = bias_attr->constant_value (0); |
4e962e74 | 18716 | |
dbb9c2b1 JB |
18717 | /* Normally, the DWARF producers are expected to use a signed |
18718 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18719 | But this is unfortunately not always the case, as witnessed | |
18720 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18721 | is used instead. To work around that ambiguity, we treat | |
18722 | the bounds as signed, and thus sign-extend their values, when | |
18723 | the base type is signed. */ | |
6e70227d | 18724 | negative_mask = |
d359392f | 18725 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18726 | if (low.kind () == PROP_CONST |
c6d940a9 | 18727 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18728 | low.set_const_val (low.const_val () | negative_mask); |
18729 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18730 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18731 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18732 | |
5bbd8269 AB |
18733 | /* Check for bit and byte strides. */ |
18734 | struct dynamic_prop byte_stride_prop; | |
18735 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18736 | if (attr_byte_stride != nullptr) | |
18737 | { | |
293e7e51 | 18738 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18739 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18740 | prop_type); | |
18741 | } | |
18742 | ||
18743 | struct dynamic_prop bit_stride_prop; | |
18744 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18745 | if (attr_bit_stride != nullptr) | |
18746 | { | |
18747 | /* It only makes sense to have either a bit or byte stride. */ | |
18748 | if (attr_byte_stride != nullptr) | |
18749 | { | |
18750 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18751 | "- DIE at %s [in module %s]"), | |
18752 | sect_offset_str (die->sect_off), | |
5e22e966 | 18753 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18754 | attr_bit_stride = nullptr; |
18755 | } | |
18756 | else | |
18757 | { | |
293e7e51 | 18758 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18759 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18760 | prop_type); | |
18761 | } | |
18762 | } | |
18763 | ||
18764 | if (attr_byte_stride != nullptr | |
18765 | || attr_bit_stride != nullptr) | |
18766 | { | |
18767 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18768 | struct dynamic_prop *stride | |
18769 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18770 | ||
18771 | range_type | |
18772 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18773 | &high, bias, stride, byte_stride_p); | |
18774 | } | |
18775 | else | |
18776 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18777 | |
c451ebe5 | 18778 | if (high_bound_is_count) |
599088e3 | 18779 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18780 | |
c2ff108b JK |
18781 | /* Ada expects an empty array on no boundary attributes. */ |
18782 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18783 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18784 | |
39cbfefa DJ |
18785 | name = dwarf2_name (die, cu); |
18786 | if (name) | |
d0e39ea2 | 18787 | range_type->set_name (name); |
6e70227d | 18788 | |
e142c38c | 18789 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18790 | if (attr != nullptr) |
529908cb | 18791 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 18792 | |
2b4424c3 TT |
18793 | maybe_set_alignment (cu, die, range_type); |
18794 | ||
7e314c57 JK |
18795 | set_die_type (die, range_type, cu); |
18796 | ||
18797 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18798 | set_descriptive_type (range_type, die, cu); |
18799 | ||
7e314c57 | 18800 | return range_type; |
a02abb62 | 18801 | } |
6e70227d | 18802 | |
f792889a | 18803 | static struct type * |
81a17f79 JB |
18804 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18805 | { | |
18806 | struct type *type; | |
81a17f79 | 18807 | |
5e22e966 | 18808 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18809 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18810 | |
74a2f8ff | 18811 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18812 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18813 | such a type, we treat it as a stub, and try to resolve it later on, |
18814 | when needed. */ | |
18815 | if (cu->language == language_ada) | |
b4b73759 | 18816 | type->set_is_stub (true); |
74a2f8ff | 18817 | |
f792889a | 18818 | return set_die_type (die, type, cu); |
81a17f79 | 18819 | } |
a02abb62 | 18820 | |
639d11d3 DC |
18821 | /* Read a single die and all its descendents. Set the die's sibling |
18822 | field to NULL; set other fields in the die correctly, and set all | |
18823 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18824 | location of the info_ptr after reading all of those dies. PARENT | |
18825 | is the parent of the die in question. */ | |
18826 | ||
18827 | static struct die_info * | |
dee91e82 | 18828 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18829 | const gdb_byte *info_ptr, |
18830 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18831 | struct die_info *parent) |
639d11d3 DC |
18832 | { |
18833 | struct die_info *die; | |
d521ce57 | 18834 | const gdb_byte *cur_ptr; |
639d11d3 | 18835 | |
3e225074 | 18836 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18837 | if (die == NULL) |
18838 | { | |
18839 | *new_info_ptr = cur_ptr; | |
18840 | return NULL; | |
18841 | } | |
93311388 | 18842 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18843 | |
3e225074 | 18844 | if (die->has_children) |
bf6af496 | 18845 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18846 | else |
18847 | { | |
18848 | die->child = NULL; | |
18849 | *new_info_ptr = cur_ptr; | |
18850 | } | |
18851 | ||
18852 | die->sibling = NULL; | |
18853 | die->parent = parent; | |
18854 | return die; | |
18855 | } | |
18856 | ||
18857 | /* Read a die, all of its descendents, and all of its siblings; set | |
18858 | all of the fields of all of the dies correctly. Arguments are as | |
18859 | in read_die_and_children. */ | |
18860 | ||
18861 | static struct die_info * | |
bf6af496 | 18862 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18863 | const gdb_byte *info_ptr, |
18864 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18865 | struct die_info *parent) |
639d11d3 DC |
18866 | { |
18867 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18868 | const gdb_byte *cur_ptr; |
639d11d3 | 18869 | |
c906108c | 18870 | cur_ptr = info_ptr; |
639d11d3 DC |
18871 | first_die = last_sibling = NULL; |
18872 | ||
18873 | while (1) | |
c906108c | 18874 | { |
639d11d3 | 18875 | struct die_info *die |
dee91e82 | 18876 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18877 | |
1d325ec1 | 18878 | if (die == NULL) |
c906108c | 18879 | { |
639d11d3 DC |
18880 | *new_info_ptr = cur_ptr; |
18881 | return first_die; | |
c906108c | 18882 | } |
1d325ec1 DJ |
18883 | |
18884 | if (!first_die) | |
18885 | first_die = die; | |
c906108c | 18886 | else |
1d325ec1 DJ |
18887 | last_sibling->sibling = die; |
18888 | ||
18889 | last_sibling = die; | |
c906108c | 18890 | } |
c906108c SS |
18891 | } |
18892 | ||
bf6af496 DE |
18893 | /* Read a die, all of its descendents, and all of its siblings; set |
18894 | all of the fields of all of the dies correctly. Arguments are as | |
18895 | in read_die_and_children. | |
18896 | This the main entry point for reading a DIE and all its children. */ | |
18897 | ||
18898 | static struct die_info * | |
18899 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18900 | const gdb_byte *info_ptr, |
18901 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18902 | struct die_info *parent) |
18903 | { | |
18904 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18905 | new_info_ptr, parent); | |
18906 | ||
b4f54984 | 18907 | if (dwarf_die_debug) |
bf6af496 DE |
18908 | { |
18909 | fprintf_unfiltered (gdb_stdlog, | |
18910 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18911 | reader->die_section->get_name (), |
bf6af496 DE |
18912 | (unsigned) (info_ptr - reader->die_section->buffer), |
18913 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18914 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18915 | } |
18916 | ||
18917 | return die; | |
18918 | } | |
18919 | ||
3019eac3 DE |
18920 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18921 | attributes. | |
18922 | The caller is responsible for filling in the extra attributes | |
18923 | and updating (*DIEP)->num_attrs. | |
18924 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18925 | except for its child, sibling, and parent fields. */ |
93311388 | 18926 | |
d521ce57 | 18927 | static const gdb_byte * |
3019eac3 | 18928 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18929 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18930 | int num_extra_attrs) |
93311388 | 18931 | { |
b64f50a1 | 18932 | unsigned int abbrev_number, bytes_read, i; |
7c32eebb | 18933 | const struct abbrev_info *abbrev; |
93311388 DE |
18934 | struct die_info *die; |
18935 | struct dwarf2_cu *cu = reader->cu; | |
18936 | bfd *abfd = reader->abfd; | |
18937 | ||
9c541725 | 18938 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18939 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18940 | info_ptr += bytes_read; | |
18941 | if (!abbrev_number) | |
18942 | { | |
18943 | *diep = NULL; | |
93311388 DE |
18944 | return info_ptr; |
18945 | } | |
18946 | ||
685af9cd | 18947 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18948 | if (!abbrev) |
348e048f DE |
18949 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18950 | abbrev_number, | |
18951 | bfd_get_filename (abfd)); | |
18952 | ||
3019eac3 | 18953 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18954 | die->sect_off = sect_off; |
93311388 DE |
18955 | die->tag = abbrev->tag; |
18956 | die->abbrev = abbrev_number; | |
3e225074 | 18957 | die->has_children = abbrev->has_children; |
93311388 | 18958 | |
3019eac3 DE |
18959 | /* Make the result usable. |
18960 | The caller needs to update num_attrs after adding the extra | |
18961 | attributes. */ | |
93311388 DE |
18962 | die->num_attrs = abbrev->num_attrs; |
18963 | ||
7a5f294d | 18964 | bool any_need_reprocess = false; |
93311388 | 18965 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 18966 | { |
7a5f294d TT |
18967 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18968 | info_ptr); | |
18969 | if (die->attrs[i].requires_reprocessing_p ()) | |
18970 | any_need_reprocess = true; | |
18a8505e AT |
18971 | } |
18972 | ||
052c8bb8 | 18973 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
18974 | if (attr != nullptr && attr->form_is_unsigned ()) |
18975 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 18976 | |
41144253 | 18977 | attr = die->attr (DW_AT_loclists_base); |
18978 | if (attr != nullptr) | |
529908cb | 18979 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 18980 | |
a39fdb41 | 18981 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18982 | if (maybe_addr_base.has_value ()) |
18983 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
18984 | |
18985 | attr = die->attr (DW_AT_rnglists_base); | |
18986 | if (attr != nullptr) | |
2b0c7f41 | 18987 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 18988 | |
7a5f294d TT |
18989 | if (any_need_reprocess) |
18990 | { | |
18991 | for (i = 0; i < abbrev->num_attrs; ++i) | |
18992 | { | |
18993 | if (die->attrs[i].requires_reprocessing_p ()) | |
18994 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
18995 | } | |
18996 | } | |
93311388 | 18997 | *diep = die; |
93311388 DE |
18998 | return info_ptr; |
18999 | } | |
19000 | ||
3019eac3 DE |
19001 | /* Read a die and all its attributes. |
19002 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19003 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19004 | |
d521ce57 | 19005 | static const gdb_byte * |
3019eac3 | 19006 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19007 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19008 | { |
d521ce57 | 19009 | const gdb_byte *result; |
bf6af496 | 19010 | |
3e225074 | 19011 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19012 | |
b4f54984 | 19013 | if (dwarf_die_debug) |
bf6af496 DE |
19014 | { |
19015 | fprintf_unfiltered (gdb_stdlog, | |
19016 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19017 | reader->die_section->get_name (), |
bf6af496 DE |
19018 | (unsigned) (info_ptr - reader->die_section->buffer), |
19019 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19020 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19021 | } |
19022 | ||
19023 | return result; | |
3019eac3 | 19024 | } |
433df2d4 | 19025 | \f |
c906108c | 19026 | |
72bf9492 DJ |
19027 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19028 | symbol for. */ | |
19029 | ||
19030 | static int | |
d8f62e84 | 19031 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19032 | { |
19033 | switch (tag) | |
19034 | { | |
19035 | #if 0 | |
19036 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19037 | that we don't at present. Note that normally this does not |
19038 | matter, mainly because C compilers don't give names to these | |
19039 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19040 | case DW_TAG_file_type: |
19041 | case DW_TAG_ptr_to_member_type: | |
19042 | case DW_TAG_set_type: | |
19043 | case DW_TAG_string_type: | |
19044 | case DW_TAG_subroutine_type: | |
19045 | #endif | |
d8f62e84 TT |
19046 | |
19047 | /* GNAT may emit an array with a name, but no typedef, so we | |
19048 | need to make a symbol in this case. */ | |
19049 | case DW_TAG_array_type: | |
19050 | return lang == language_ada; | |
19051 | ||
72bf9492 DJ |
19052 | case DW_TAG_base_type: |
19053 | case DW_TAG_class_type: | |
680b30c7 | 19054 | case DW_TAG_interface_type: |
72bf9492 DJ |
19055 | case DW_TAG_enumeration_type: |
19056 | case DW_TAG_structure_type: | |
19057 | case DW_TAG_subrange_type: | |
19058 | case DW_TAG_typedef: | |
19059 | case DW_TAG_union_type: | |
19060 | return 1; | |
19061 | default: | |
19062 | return 0; | |
19063 | } | |
19064 | } | |
19065 | ||
19066 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19067 | ||
19068 | static struct partial_die_info * | |
dee91e82 | 19069 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19070 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19071 | { |
dee91e82 | 19072 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19073 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19074 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19075 | unsigned int bytes_read; |
5afb4e99 | 19076 | unsigned int load_all = 0; |
72bf9492 DJ |
19077 | int nesting_level = 1; |
19078 | ||
19079 | parent_die = NULL; | |
19080 | last_die = NULL; | |
19081 | ||
7adf1e79 DE |
19082 | gdb_assert (cu->per_cu != NULL); |
19083 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19084 | load_all = 1; |
19085 | ||
72bf9492 DJ |
19086 | cu->partial_dies |
19087 | = htab_create_alloc_ex (cu->header.length / 12, | |
19088 | partial_die_hash, | |
19089 | partial_die_eq, | |
19090 | NULL, | |
19091 | &cu->comp_unit_obstack, | |
19092 | hashtab_obstack_allocate, | |
19093 | dummy_obstack_deallocate); | |
19094 | ||
72bf9492 DJ |
19095 | while (1) |
19096 | { | |
7c32eebb TT |
19097 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
19098 | &bytes_read); | |
72bf9492 DJ |
19099 | |
19100 | /* A NULL abbrev means the end of a series of children. */ | |
19101 | if (abbrev == NULL) | |
19102 | { | |
19103 | if (--nesting_level == 0) | |
cd9983dd YQ |
19104 | return first_die; |
19105 | ||
72bf9492 DJ |
19106 | info_ptr += bytes_read; |
19107 | last_die = parent_die; | |
19108 | parent_die = parent_die->die_parent; | |
19109 | continue; | |
19110 | } | |
19111 | ||
98bfdba5 PA |
19112 | /* Check for template arguments. We never save these; if |
19113 | they're seen, we just mark the parent, and go on our way. */ | |
19114 | if (parent_die != NULL | |
19115 | && cu->language == language_cplus | |
19116 | && (abbrev->tag == DW_TAG_template_type_param | |
19117 | || abbrev->tag == DW_TAG_template_value_param)) | |
19118 | { | |
19119 | parent_die->has_template_arguments = 1; | |
19120 | ||
19121 | if (!load_all) | |
19122 | { | |
19123 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19124 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19125 | continue; |
19126 | } | |
19127 | } | |
19128 | ||
0d99eb77 | 19129 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19130 | Skip their other children. */ |
19131 | if (!load_all | |
19132 | && cu->language == language_cplus | |
19133 | && parent_die != NULL | |
f9b5d5ea TV |
19134 | && parent_die->tag == DW_TAG_subprogram |
19135 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19136 | { |
dee91e82 | 19137 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19138 | continue; |
19139 | } | |
19140 | ||
5afb4e99 DJ |
19141 | /* Check whether this DIE is interesting enough to save. Normally |
19142 | we would not be interested in members here, but there may be | |
19143 | later variables referencing them via DW_AT_specification (for | |
19144 | static members). */ | |
19145 | if (!load_all | |
d8f62e84 | 19146 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19147 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19148 | && abbrev->tag != DW_TAG_enumerator |
19149 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19150 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19151 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19152 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19153 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19154 | && abbrev->tag != DW_TAG_module |
95554aad | 19155 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19156 | && abbrev->tag != DW_TAG_imported_unit |
19157 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19158 | { |
19159 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19160 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19161 | continue; |
19162 | } | |
19163 | ||
6f06d47b YQ |
19164 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19165 | abbrev); | |
cd9983dd | 19166 | |
48fbe735 | 19167 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19168 | |
19169 | /* This two-pass algorithm for processing partial symbols has a | |
19170 | high cost in cache pressure. Thus, handle some simple cases | |
19171 | here which cover the majority of C partial symbols. DIEs | |
19172 | which neither have specification tags in them, nor could have | |
19173 | specification tags elsewhere pointing at them, can simply be | |
19174 | processed and discarded. | |
19175 | ||
19176 | This segment is also optional; scan_partial_symbols and | |
19177 | add_partial_symbol will handle these DIEs if we chain | |
19178 | them in normally. When compilers which do not emit large | |
19179 | quantities of duplicate debug information are more common, | |
19180 | this code can probably be removed. */ | |
19181 | ||
19182 | /* Any complete simple types at the top level (pretty much all | |
19183 | of them, for a language without namespaces), can be processed | |
19184 | directly. */ | |
19185 | if (parent_die == NULL | |
cd9983dd YQ |
19186 | && pdi.has_specification == 0 |
19187 | && pdi.is_declaration == 0 | |
19188 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19189 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19190 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19191 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19192 | { |
7d00ffec | 19193 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19194 | add_partial_symbol (&pdi, cu); |
19195 | ||
cd9983dd | 19196 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19197 | continue; |
19198 | } | |
19199 | ||
d8228535 JK |
19200 | /* The exception for DW_TAG_typedef with has_children above is |
19201 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19202 | type_name_or_error will error on such types later. |
d8228535 JK |
19203 | |
19204 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19205 | it could not find the child DIEs referenced later, this is checked | |
19206 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19207 | ||
cd9983dd | 19208 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19209 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19210 | "- DIE at %s [in module %s]"), |
cd9983dd | 19211 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19212 | |
72bf9492 DJ |
19213 | /* If we're at the second level, and we're an enumerator, and |
19214 | our parent has no specification (meaning possibly lives in a | |
19215 | namespace elsewhere), then we can add the partial symbol now | |
19216 | instead of queueing it. */ | |
cd9983dd | 19217 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19218 | && parent_die != NULL |
19219 | && parent_die->die_parent == NULL | |
19220 | && parent_die->tag == DW_TAG_enumeration_type | |
19221 | && parent_die->has_specification == 0) | |
19222 | { | |
7d00ffec | 19223 | if (pdi.raw_name == NULL) |
b98664d3 | 19224 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19225 | else if (building_psymtab) |
f0fbb768 | 19226 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19227 | |
cd9983dd | 19228 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19229 | continue; |
19230 | } | |
19231 | ||
cd9983dd | 19232 | struct partial_die_info *part_die |
6f06d47b | 19233 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19234 | |
72bf9492 DJ |
19235 | /* We'll save this DIE so link it in. */ |
19236 | part_die->die_parent = parent_die; | |
19237 | part_die->die_sibling = NULL; | |
19238 | part_die->die_child = NULL; | |
19239 | ||
19240 | if (last_die && last_die == parent_die) | |
19241 | last_die->die_child = part_die; | |
19242 | else if (last_die) | |
19243 | last_die->die_sibling = part_die; | |
19244 | ||
19245 | last_die = part_die; | |
19246 | ||
19247 | if (first_die == NULL) | |
19248 | first_die = part_die; | |
19249 | ||
19250 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19251 | find interesting need to be in the hash table, because we | |
19252 | also have the parent/sibling/child chains; only those that we | |
19253 | might refer to by offset later during partial symbol reading. | |
19254 | ||
19255 | For now this means things that might have be the target of a | |
19256 | DW_AT_specification, DW_AT_abstract_origin, or | |
19257 | DW_AT_extension. DW_AT_extension will refer only to | |
19258 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19259 | many things under the function DIE, but we do not recurse | |
19260 | into function DIEs during partial symbol reading) and | |
19261 | possibly variables as well; DW_AT_specification refers to | |
19262 | declarations. Declarations ought to have the DW_AT_declaration | |
19263 | flag. It happens that GCC forgets to put it in sometimes, but | |
19264 | only for functions, not for types. | |
19265 | ||
19266 | Adding more things than necessary to the hash table is harmless | |
19267 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19268 | wasted time in find_partial_die, when we reread the compilation |
19269 | unit with load_all_dies set. */ | |
72bf9492 | 19270 | |
5afb4e99 | 19271 | if (load_all |
72929c62 | 19272 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19273 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19274 | || abbrev->tag == DW_TAG_variable |
19275 | || abbrev->tag == DW_TAG_namespace | |
19276 | || part_die->is_declaration) | |
19277 | { | |
19278 | void **slot; | |
19279 | ||
19280 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19281 | to_underlying (part_die->sect_off), |
19282 | INSERT); | |
72bf9492 DJ |
19283 | *slot = part_die; |
19284 | } | |
19285 | ||
72bf9492 | 19286 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19287 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19288 | languages we have to, so that we can get at method physnames |
19289 | to infer fully qualified class names, for DW_AT_specification, | |
19290 | and for C++ template arguments. For C++, we also look one level | |
19291 | inside functions to find template arguments (if the name of the | |
19292 | function does not already contain the template arguments). | |
bc30ff58 | 19293 | |
0a4b0913 AB |
19294 | For Ada and Fortran, we need to scan the children of subprograms |
19295 | and lexical blocks as well because these languages allow the | |
19296 | definition of nested entities that could be interesting for the | |
19297 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19298 | if (last_die->has_children |
5afb4e99 DJ |
19299 | && (load_all |
19300 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19301 | || last_die->tag == DW_TAG_module |
72bf9492 | 19302 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19303 | || (cu->language == language_cplus |
19304 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19305 | && (last_die->raw_name == NULL |
19306 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19307 | || (cu->language != language_c |
19308 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19309 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19310 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19311 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19312 | || ((cu->language == language_ada |
19313 | || cu->language == language_fortran) | |
bc30ff58 JB |
19314 | && (last_die->tag == DW_TAG_subprogram |
19315 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19316 | { |
19317 | nesting_level++; | |
19318 | parent_die = last_die; | |
19319 | continue; | |
19320 | } | |
19321 | ||
19322 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19323 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19324 | |
19325 | /* Back to the top, do it again. */ | |
19326 | } | |
19327 | } | |
19328 | ||
6f06d47b | 19329 | partial_die_info::partial_die_info (sect_offset sect_off_, |
7c32eebb | 19330 | const struct abbrev_info *abbrev) |
6f06d47b YQ |
19331 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) |
19332 | { | |
19333 | } | |
19334 | ||
7d00ffec TT |
19335 | /* See class definition. */ |
19336 | ||
19337 | const char * | |
19338 | partial_die_info::name (dwarf2_cu *cu) | |
19339 | { | |
19340 | if (!canonical_name && raw_name != nullptr) | |
19341 | { | |
19342 | struct objfile *objfile = cu->per_objfile->objfile; | |
19343 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19344 | canonical_name = 1; | |
19345 | } | |
19346 | ||
19347 | return raw_name; | |
19348 | } | |
19349 | ||
35cc7ed7 YQ |
19350 | /* Read a minimal amount of information into the minimal die structure. |
19351 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19352 | |
48fbe735 YQ |
19353 | const gdb_byte * |
19354 | partial_die_info::read (const struct die_reader_specs *reader, | |
19355 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19356 | { |
dee91e82 | 19357 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19358 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19359 | unsigned int i; |
c5aa993b | 19360 | int has_low_pc_attr = 0; |
c906108c | 19361 | int has_high_pc_attr = 0; |
91da1414 | 19362 | int high_pc_relative = 0; |
c906108c | 19363 | |
fd0a254f | 19364 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19365 | { |
e7da7f8f | 19366 | attribute attr; |
7a5f294d | 19367 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19368 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19369 | already been read at this point, so there is no need to wait until |
18a8505e | 19370 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19371 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19372 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19373 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19374 | partial symbol table. */ |
c906108c SS |
19375 | switch (attr.name) |
19376 | { | |
19377 | case DW_AT_name: | |
48fbe735 | 19378 | switch (tag) |
71c25dea TT |
19379 | { |
19380 | case DW_TAG_compile_unit: | |
95554aad | 19381 | case DW_TAG_partial_unit: |
348e048f | 19382 | case DW_TAG_type_unit: |
71c25dea TT |
19383 | /* Compilation units have a DW_AT_name that is a filename, not |
19384 | a source language identifier. */ | |
19385 | case DW_TAG_enumeration_type: | |
19386 | case DW_TAG_enumerator: | |
19387 | /* These tags always have simple identifiers already; no need | |
19388 | to canonicalize them. */ | |
7d00ffec | 19389 | canonical_name = 1; |
2c830f54 | 19390 | raw_name = attr.as_string (); |
71c25dea TT |
19391 | break; |
19392 | default: | |
7d00ffec | 19393 | canonical_name = 0; |
2c830f54 | 19394 | raw_name = attr.as_string (); |
71c25dea TT |
19395 | break; |
19396 | } | |
c906108c | 19397 | break; |
31ef98ae | 19398 | case DW_AT_linkage_name: |
c906108c | 19399 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19400 | /* Note that both forms of linkage name might appear. We |
19401 | assume they will be the same, and we only store the last | |
19402 | one we see. */ | |
95f982e5 | 19403 | linkage_name = attr.as_string (); |
c906108c SS |
19404 | break; |
19405 | case DW_AT_low_pc: | |
19406 | has_low_pc_attr = 1; | |
95f982e5 | 19407 | lowpc = attr.as_address (); |
c906108c SS |
19408 | break; |
19409 | case DW_AT_high_pc: | |
19410 | has_high_pc_attr = 1; | |
95f982e5 | 19411 | highpc = attr.as_address (); |
cd6c91b4 | 19412 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19413 | high_pc_relative = 1; |
c906108c SS |
19414 | break; |
19415 | case DW_AT_location: | |
dda83cd7 SM |
19416 | /* Support the .debug_loc offsets. */ |
19417 | if (attr.form_is_block ()) | |
19418 | { | |
9d2246fc | 19419 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19420 | } |
19421 | else if (attr.form_is_section_offset ()) | |
19422 | { | |
4d3c2250 | 19423 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19424 | } |
19425 | else | |
19426 | { | |
4d3c2250 KB |
19427 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19428 | "partial symbol information"); | |
dda83cd7 | 19429 | } |
c906108c | 19430 | break; |
c906108c | 19431 | case DW_AT_external: |
c45bc3f8 | 19432 | is_external = attr.as_boolean (); |
c906108c SS |
19433 | break; |
19434 | case DW_AT_declaration: | |
c45bc3f8 | 19435 | is_declaration = attr.as_boolean (); |
c906108c SS |
19436 | break; |
19437 | case DW_AT_type: | |
48fbe735 | 19438 | has_type = 1; |
c906108c SS |
19439 | break; |
19440 | case DW_AT_abstract_origin: | |
19441 | case DW_AT_specification: | |
72bf9492 | 19442 | case DW_AT_extension: |
48fbe735 | 19443 | has_specification = 1; |
0826b30a | 19444 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19445 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19446 | || cu->per_cu->is_dwz); |
c906108c SS |
19447 | break; |
19448 | case DW_AT_sibling: | |
19449 | /* Ignore absolute siblings, they might point outside of | |
19450 | the current compile unit. */ | |
19451 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19452 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19453 | else |
b9502d3f | 19454 | { |
48fbe735 | 19455 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19456 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19457 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19458 | |
19459 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19460 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19461 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19462 | reader->die_section->overflow_complaint (); |
b9502d3f | 19463 | else |
48fbe735 | 19464 | sibling = sibling_ptr; |
b9502d3f | 19465 | } |
c906108c | 19466 | break; |
dda83cd7 SM |
19467 | case DW_AT_byte_size: |
19468 | has_byte_size = 1; | |
19469 | break; | |
19470 | case DW_AT_const_value: | |
19471 | has_const_value = 1; | |
19472 | break; | |
68511cec CES |
19473 | case DW_AT_calling_convention: |
19474 | /* DWARF doesn't provide a way to identify a program's source-level | |
19475 | entry point. DW_AT_calling_convention attributes are only meant | |
19476 | to describe functions' calling conventions. | |
19477 | ||
19478 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19479 | Fortran, and before DWARF 4 DW_CC_program was the only |
19480 | piece of debugging information whose definition refers to | |
19481 | a 'main program' at all, several compilers marked Fortran | |
19482 | main programs with DW_CC_program --- even when those | |
19483 | functions use the standard calling conventions. | |
19484 | ||
19485 | Although DWARF now specifies a way to provide this | |
19486 | information, we support this practice for backward | |
19487 | compatibility. */ | |
529908cb | 19488 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19489 | && cu->language == language_fortran) |
48fbe735 | 19490 | main_subprogram = 1; |
68511cec | 19491 | break; |
481860b3 | 19492 | case DW_AT_inline: |
529908cb TT |
19493 | { |
19494 | LONGEST value = attr.constant_value (-1); | |
19495 | if (value == DW_INL_inlined | |
19496 | || value == DW_INL_declared_inlined) | |
19497 | may_be_inlined = 1; | |
19498 | } | |
481860b3 | 19499 | break; |
95554aad TT |
19500 | |
19501 | case DW_AT_import: | |
48fbe735 | 19502 | if (tag == DW_TAG_imported_unit) |
36586728 | 19503 | { |
0826b30a | 19504 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19505 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19506 | || cu->per_cu->is_dwz); |
19507 | } | |
95554aad TT |
19508 | break; |
19509 | ||
0c1b455e | 19510 | case DW_AT_main_subprogram: |
c45bc3f8 | 19511 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19512 | break; |
19513 | ||
05caa1d2 TT |
19514 | case DW_AT_ranges: |
19515 | { | |
2b0c7f41 SM |
19516 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19517 | on DWARF version). */ | |
19518 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19519 | ||
19520 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
19521 | this value. */ | |
19522 | if (tag != DW_TAG_compile_unit) | |
19523 | ranges_offset += cu->gnu_ranges_base; | |
19524 | ||
05caa1d2 | 19525 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 19526 | nullptr, tag)) |
05caa1d2 TT |
19527 | has_pc_info = 1; |
19528 | } | |
19529 | break; | |
19530 | ||
c906108c SS |
19531 | default: |
19532 | break; | |
19533 | } | |
19534 | } | |
19535 | ||
10d06d82 TT |
19536 | /* For Ada, if both the name and the linkage name appear, we prefer |
19537 | the latter. This lets "catch exception" work better, regardless | |
19538 | of the order in which the name and linkage name were emitted. | |
19539 | Really, though, this is just a workaround for the fact that gdb | |
19540 | doesn't store both the name and the linkage name. */ | |
19541 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19542 | raw_name = linkage_name; |
10d06d82 | 19543 | |
91da1414 | 19544 | if (high_pc_relative) |
48fbe735 | 19545 | highpc += lowpc; |
91da1414 | 19546 | |
9373cf26 JK |
19547 | if (has_low_pc_attr && has_high_pc_attr) |
19548 | { | |
19549 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19550 | eliminate duplicate copies of functions and vtables and such. | |
19551 | The linker will arbitrarily choose one and discard the others. | |
19552 | The AT_*_pc values for such functions refer to local labels in | |
19553 | these sections. If the section from that file was discarded, the | |
19554 | labels are not in the output, so the relocs get a value of 0. | |
19555 | If this is a discarded function, mark the pc bounds as invalid, | |
19556 | so that GDB will ignore it. */ | |
976ca316 | 19557 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19558 | { |
976ca316 | 19559 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19560 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19561 | |
b98664d3 | 19562 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19563 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19564 | paddress (gdbarch, lowpc), |
19565 | sect_offset_str (sect_off), | |
9d8780f0 | 19566 | objfile_name (objfile)); |
9373cf26 JK |
19567 | } |
19568 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19569 | else if (lowpc >= highpc) |
9373cf26 | 19570 | { |
976ca316 | 19571 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19572 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19573 | |
b98664d3 | 19574 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19575 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19576 | paddress (gdbarch, lowpc), |
19577 | paddress (gdbarch, highpc), | |
19578 | sect_offset_str (sect_off), | |
9c541725 | 19579 | objfile_name (objfile)); |
9373cf26 JK |
19580 | } |
19581 | else | |
48fbe735 | 19582 | has_pc_info = 1; |
9373cf26 | 19583 | } |
85cbf3d3 | 19584 | |
c906108c SS |
19585 | return info_ptr; |
19586 | } | |
19587 | ||
72bf9492 DJ |
19588 | /* Find a cached partial DIE at OFFSET in CU. */ |
19589 | ||
d590ff25 YQ |
19590 | struct partial_die_info * |
19591 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19592 | { |
19593 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19594 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19595 | |
9a3c8263 | 19596 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19597 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19598 | to_underlying (sect_off))); |
72bf9492 | 19599 | |
72bf9492 DJ |
19600 | return lookup_die; |
19601 | } | |
19602 | ||
348e048f DE |
19603 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19604 | except in the case of .debug_types DIEs which do not reference | |
19605 | outside their CU (they do however referencing other types via | |
55f1336d | 19606 | DW_FORM_ref_sig8). */ |
72bf9492 | 19607 | |
122cf0f2 | 19608 | static const struct cu_partial_die_info |
9c541725 | 19609 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19610 | { |
976ca316 SM |
19611 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19612 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19613 | struct partial_die_info *pd = NULL; |
72bf9492 | 19614 | |
36586728 | 19615 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19616 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19617 | { |
d590ff25 | 19618 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19619 | if (pd != NULL) |
fb816e8b | 19620 | return { cu, pd }; |
0d99eb77 DE |
19621 | /* We missed recording what we needed. |
19622 | Load all dies and try again. */ | |
5afb4e99 | 19623 | } |
0d99eb77 DE |
19624 | else |
19625 | { | |
19626 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19627 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19628 | { |
9d8780f0 SM |
19629 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19630 | " external reference to offset %s [in module %s].\n"), | |
19631 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19632 | bfd_get_filename (objfile->obfd)); |
19633 | } | |
7188ed02 SM |
19634 | dwarf2_per_cu_data *per_cu |
19635 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19636 | per_objfile); |
72bf9492 | 19637 | |
976ca316 | 19638 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19639 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19640 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19641 | |
976ca316 | 19642 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19643 | |
19644 | cu->last_used = 0; | |
19645 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19646 | } |
5afb4e99 | 19647 | |
dee91e82 DE |
19648 | /* If we didn't find it, and not all dies have been loaded, |
19649 | load them all and try again. */ | |
19650 | ||
7188ed02 | 19651 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19652 | { |
7188ed02 | 19653 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19654 | |
19655 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19656 | THIS_CU->cu may already be in use. So we can't just free it and | |
19657 | replace its DIEs with the ones we read in. Instead, we leave those | |
19658 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19659 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19660 | set. */ | |
976ca316 | 19661 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19662 | |
7188ed02 | 19663 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19664 | } |
19665 | ||
19666 | if (pd == NULL) | |
521894aa | 19667 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19668 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19669 | return { cu, pd }; |
72bf9492 DJ |
19670 | } |
19671 | ||
abc72ce4 DE |
19672 | /* See if we can figure out if the class lives in a namespace. We do |
19673 | this by looking for a member function; its demangled name will | |
19674 | contain namespace info, if there is any. */ | |
19675 | ||
19676 | static void | |
19677 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19678 | struct dwarf2_cu *cu) | |
19679 | { | |
19680 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19681 | what template types look like, because the demangler | |
19682 | frequently doesn't give the same name as the debug info. We | |
19683 | could fix this by only using the demangled name to get the | |
19684 | prefix (but see comment in read_structure_type). */ | |
19685 | ||
19686 | struct partial_die_info *real_pdi; | |
19687 | struct partial_die_info *child_pdi; | |
19688 | ||
19689 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19690 | we should not do this. We'll prepend the parent's fully qualified | |
19691 | name when we create the partial symbol. */ | |
19692 | ||
19693 | real_pdi = struct_pdi; | |
19694 | while (real_pdi->has_specification) | |
fb816e8b | 19695 | { |
122cf0f2 AB |
19696 | auto res = find_partial_die (real_pdi->spec_offset, |
19697 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19698 | real_pdi = res.pdi; |
19699 | cu = res.cu; | |
19700 | } | |
abc72ce4 DE |
19701 | |
19702 | if (real_pdi->die_parent != NULL) | |
19703 | return; | |
19704 | ||
19705 | for (child_pdi = struct_pdi->die_child; | |
19706 | child_pdi != NULL; | |
19707 | child_pdi = child_pdi->die_sibling) | |
19708 | { | |
19709 | if (child_pdi->tag == DW_TAG_subprogram | |
19710 | && child_pdi->linkage_name != NULL) | |
19711 | { | |
43816ebc | 19712 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19713 | (cu->language_defn->class_name_from_physname |
19714 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19715 | if (actual_class_name != NULL) |
19716 | { | |
5e22e966 | 19717 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19718 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19719 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19720 | } |
19721 | break; | |
19722 | } | |
19723 | } | |
19724 | } | |
19725 | ||
25c11aca TV |
19726 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19727 | attribute. */ | |
19728 | ||
19729 | static bool | |
19730 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19731 | { | |
19732 | switch (tag) | |
19733 | { | |
19734 | case DW_TAG_constant: | |
19735 | case DW_TAG_enumerator: | |
19736 | case DW_TAG_formal_parameter: | |
19737 | case DW_TAG_template_value_param: | |
19738 | case DW_TAG_variable: | |
19739 | return true; | |
19740 | } | |
19741 | ||
19742 | return false; | |
19743 | } | |
19744 | ||
52356b79 YQ |
19745 | void |
19746 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19747 | { |
abc72ce4 DE |
19748 | /* Once we've fixed up a die, there's no point in doing so again. |
19749 | This also avoids a memory leak if we were to call | |
19750 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19751 | if (fixup_called) |
abc72ce4 DE |
19752 | return; |
19753 | ||
72bf9492 DJ |
19754 | /* If we found a reference attribute and the DIE has no name, try |
19755 | to find a name in the referred to DIE. */ | |
19756 | ||
7d00ffec | 19757 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19758 | { |
19759 | struct partial_die_info *spec_die; | |
72bf9492 | 19760 | |
122cf0f2 | 19761 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19762 | spec_die = res.pdi; |
19763 | cu = res.cu; | |
72bf9492 | 19764 | |
52356b79 | 19765 | spec_die->fixup (cu); |
72bf9492 | 19766 | |
7d00ffec | 19767 | if (spec_die->raw_name) |
72bf9492 | 19768 | { |
7d00ffec TT |
19769 | raw_name = spec_die->raw_name; |
19770 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19771 | |
19772 | /* Copy DW_AT_external attribute if it is set. */ | |
19773 | if (spec_die->is_external) | |
52356b79 | 19774 | is_external = spec_die->is_external; |
72bf9492 DJ |
19775 | } |
19776 | } | |
19777 | ||
25c11aca TV |
19778 | if (!has_const_value && has_specification |
19779 | && can_have_DW_AT_const_value_p (tag)) | |
19780 | { | |
19781 | struct partial_die_info *spec_die; | |
19782 | ||
19783 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19784 | spec_die = res.pdi; | |
19785 | cu = res.cu; | |
19786 | ||
19787 | spec_die->fixup (cu); | |
19788 | ||
19789 | if (spec_die->has_const_value) | |
19790 | { | |
19791 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19792 | has_const_value = spec_die->has_const_value; | |
19793 | } | |
19794 | } | |
19795 | ||
72bf9492 | 19796 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19797 | |
7d00ffec TT |
19798 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19799 | { | |
19800 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19801 | canonical_name = 1; | |
19802 | } | |
72bf9492 | 19803 | |
abc72ce4 DE |
19804 | /* If there is no parent die to provide a namespace, and there are |
19805 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19806 | name. */ |
abc72ce4 | 19807 | if (cu->language == language_cplus |
5e22e966 | 19808 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19809 | && die_parent == NULL |
19810 | && has_children | |
19811 | && (tag == DW_TAG_class_type | |
19812 | || tag == DW_TAG_structure_type | |
19813 | || tag == DW_TAG_union_type)) | |
19814 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19815 | |
53832f31 TT |
19816 | /* GCC might emit a nameless struct or union that has a linkage |
19817 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19818 | if (raw_name == NULL |
52356b79 YQ |
19819 | && (tag == DW_TAG_class_type |
19820 | || tag == DW_TAG_interface_type | |
19821 | || tag == DW_TAG_structure_type | |
19822 | || tag == DW_TAG_union_type) | |
19823 | && linkage_name != NULL) | |
53832f31 | 19824 | { |
43816ebc TT |
19825 | gdb::unique_xmalloc_ptr<char> demangled |
19826 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19827 | if (demangled != nullptr) | |
53832f31 | 19828 | { |
96408a79 SA |
19829 | const char *base; |
19830 | ||
19831 | /* Strip any leading namespaces/classes, keep only the base name. | |
19832 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19833 | base = strrchr (demangled.get (), ':'); |
19834 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19835 | base++; |
19836 | else | |
43816ebc | 19837 | base = demangled.get (); |
96408a79 | 19838 | |
5e22e966 | 19839 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19840 | raw_name = objfile->intern (base); |
19841 | canonical_name = 1; | |
53832f31 TT |
19842 | } |
19843 | } | |
19844 | ||
52356b79 | 19845 | fixup_called = 1; |
72bf9492 DJ |
19846 | } |
19847 | ||
d0ce17d8 | 19848 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
19849 | contents from the given SECTION in the HEADER. |
19850 | ||
19851 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 19852 | static void |
d0ce17d8 | 19853 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
19854 | struct dwarf2_section_info *section, |
19855 | sect_offset header_offset) | |
41144253 | 19856 | { |
19857 | unsigned int bytes_read; | |
19858 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
19859 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
19860 | ||
41144253 | 19861 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
19862 | info_ptr += bytes_read; | |
a1c40103 | 19863 | |
41144253 | 19864 | header->version = read_2_bytes (abfd, info_ptr); |
19865 | info_ptr += 2; | |
a1c40103 | 19866 | |
41144253 | 19867 | header->addr_size = read_1_byte (abfd, info_ptr); |
19868 | info_ptr += 1; | |
a1c40103 | 19869 | |
41144253 | 19870 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
19871 | info_ptr += 1; | |
a1c40103 | 19872 | |
41144253 | 19873 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
19874 | } | |
19875 | ||
19876 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19877 | static ULONGEST | |
19878 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19879 | { | |
19880 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19881 | the header. The header consists of the following entities- | |
19882 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19883 | bit format) | |
19884 | 2. version (2 bytes) | |
19885 | 3. address size (1 byte) | |
19886 | 4. segment selector size (1 byte) | |
19887 | 5. offset entry count (4 bytes) | |
19888 | These sizes are derived as per the DWARFv5 standard. */ | |
19889 | if (cu->dwo_unit != nullptr) | |
19890 | { | |
19891 | if (cu->header.initial_length_size == 4) | |
19892 | return LOCLIST_HEADER_SIZE32; | |
19893 | return LOCLIST_HEADER_SIZE64; | |
19894 | } | |
19895 | return cu->loclist_base; | |
19896 | } | |
19897 | ||
19898 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19899 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
19900 | |
19901 | static sect_offset | |
41144253 | 19902 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
19903 | { | |
976ca316 SM |
19904 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19905 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19906 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
19907 | ULONGEST loclist_header_size = |
19908 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
19909 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 19910 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
19911 | |
19912 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
19913 | ULONGEST start_offset = | |
19914 | loclist_base + loclist_index * cu->header.offset_size; | |
19915 | ||
a1c40103 | 19916 | /* Get loclists section. */ |
41144253 | 19917 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
19918 | ||
a1c40103 | 19919 | /* Read the loclists section content. */ |
41144253 | 19920 | section->read (objfile); |
19921 | if (section->buffer == NULL) | |
a0c1eeba SM |
19922 | error (_("DW_FORM_loclistx used without .debug_loclists " |
19923 | "section [in module %s]"), objfile_name (objfile)); | |
19924 | ||
a1c40103 SM |
19925 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
19926 | so if loclist_base is smaller than the header size, we have a problem. */ | |
19927 | if (loclist_base < loclist_header_size) | |
19928 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
19929 | objfile_name (objfile)); | |
19930 | ||
19931 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 19932 | struct loclists_rnglists_header header; |
a1c40103 SM |
19933 | read_loclists_rnglists_header (&header, section, |
19934 | (sect_offset) (loclist_base - loclist_header_size)); | |
19935 | ||
19936 | /* Verify the loclist index is valid. */ | |
41144253 | 19937 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
19938 | error (_("DW_FORM_loclistx pointing outside of " |
19939 | ".debug_loclists offset array [in module %s]"), | |
19940 | objfile_name (objfile)); | |
19941 | ||
05787bad SM |
19942 | /* Validate that reading won't go beyond the end of the section. */ |
19943 | if (start_offset + cu->header.offset_size > section->size) | |
19944 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
19945 | ".debug_loclists section [in module %s]"), | |
19946 | objfile_name (objfile)); | |
19947 | ||
19948 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 19949 | |
19950 | if (cu->header.offset_size == 4) | |
e57933dc | 19951 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 19952 | else |
e57933dc | 19953 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 19954 | } |
19955 | ||
d0ce17d8 CT |
19956 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
19957 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
19958 | |
19959 | static sect_offset | |
d0ce17d8 CT |
19960 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
19961 | dwarf_tag tag) | |
19962 | { | |
19963 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
19964 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19965 | bfd *abfd = objfile->obfd; | |
19966 | ULONGEST rnglist_header_size = | |
19967 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
19968 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
19969 | |
19970 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
19971 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
19972 | doesn't apply. */ | |
d0ce17d8 | 19973 | ULONGEST rnglist_base = |
2b0c7f41 | 19974 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
19975 | |
19976 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
19977 | ULONGEST start_offset = |
19978 | rnglist_base + rnglist_index * cu->header.offset_size; | |
19979 | ||
19980 | /* Get rnglists section. */ | |
19981 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
19982 | ||
19983 | /* Read the rnglists section content. */ | |
19984 | section->read (objfile); | |
19985 | if (section->buffer == nullptr) | |
19986 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
19987 | "[in module %s]"), | |
19988 | objfile_name (objfile)); | |
19989 | ||
a1c40103 SM |
19990 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
19991 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
19992 | if (rnglist_base < rnglist_header_size) | |
19993 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
19994 | objfile_name (objfile)); | |
19995 | ||
19996 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 19997 | struct loclists_rnglists_header header; |
a1c40103 SM |
19998 | read_loclists_rnglists_header (&header, section, |
19999 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20000 | ||
20001 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20002 | if (rnglist_index >= header.offset_entry_count) |
20003 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20004 | ".debug_rnglists offset array [in module %s]"), | |
20005 | objfile_name (objfile)); | |
20006 | ||
d0ce17d8 | 20007 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20008 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20009 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20010 | ".debug_rnglists section [in module %s]"), | |
20011 | objfile_name (objfile)); | |
20012 | ||
20013 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20014 | ||
20015 | if (cu->header.offset_size == 4) | |
e57933dc | 20016 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20017 | else |
e57933dc | 20018 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20019 | } |
20020 | ||
18a8505e AT |
20021 | /* Process the attributes that had to be skipped in the first round. These |
20022 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20023 | They could not have been processed in the first round, because at the time | |
20024 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20025 | static void |
20026 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20027 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20028 | { |
20029 | struct dwarf2_cu *cu = reader->cu; | |
20030 | switch (attr->form) | |
20031 | { | |
20032 | case DW_FORM_addrx: | |
20033 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20034 | attr->set_address (read_addr_index (cu, |
20035 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20036 | break; |
41144253 | 20037 | case DW_FORM_loclistx: |
b1829e1b | 20038 | { |
e57933dc | 20039 | sect_offset loclists_sect_off |
b1829e1b SM |
20040 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20041 | ||
e57933dc | 20042 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20043 | } |
20044 | break; | |
d0ce17d8 | 20045 | case DW_FORM_rnglistx: |
b1829e1b | 20046 | { |
e57933dc | 20047 | sect_offset rnglists_sect_off |
b1829e1b SM |
20048 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20049 | ||
e57933dc | 20050 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20051 | } |
dda83cd7 | 20052 | break; |
18a8505e AT |
20053 | case DW_FORM_strx: |
20054 | case DW_FORM_strx1: | |
20055 | case DW_FORM_strx2: | |
20056 | case DW_FORM_strx3: | |
20057 | case DW_FORM_strx4: | |
20058 | case DW_FORM_GNU_str_index: | |
20059 | { | |
fe56917a | 20060 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20061 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20062 | if (reader->dwo_file != NULL) |
c6481205 TT |
20063 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20064 | str_index)); | |
18a8505e | 20065 | else |
c6481205 TT |
20066 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20067 | str_index)); | |
18a8505e AT |
20068 | break; |
20069 | } | |
20070 | default: | |
20071 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20072 | } | |
20073 | } | |
20074 | ||
a8329558 | 20075 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20076 | |
d521ce57 | 20077 | static const gdb_byte * |
dee91e82 DE |
20078 | read_attribute_value (const struct die_reader_specs *reader, |
20079 | struct attribute *attr, unsigned form, | |
7a5f294d | 20080 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20081 | { |
dee91e82 | 20082 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20083 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20084 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20085 | bfd *abfd = reader->abfd; |
e7c27a73 | 20086 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20087 | unsigned int bytes_read; |
20088 | struct dwarf_block *blk; | |
20089 | ||
aead7601 | 20090 | attr->form = (enum dwarf_form) form; |
a8329558 | 20091 | switch (form) |
c906108c | 20092 | { |
c906108c | 20093 | case DW_FORM_ref_addr: |
7c290a04 TT |
20094 | if (cu_header->version == 2) |
20095 | attr->set_unsigned (cu_header->read_address (abfd, info_ptr, | |
414ad644 | 20096 | &bytes_read)); |
ae411497 | 20097 | else |
7c290a04 | 20098 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20099 | &bytes_read)); |
ae411497 TT |
20100 | info_ptr += bytes_read; |
20101 | break; | |
36586728 | 20102 | case DW_FORM_GNU_ref_alt: |
7c290a04 | 20103 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20104 | &bytes_read)); |
36586728 TT |
20105 | info_ptr += bytes_read; |
20106 | break; | |
ae411497 | 20107 | case DW_FORM_addr: |
08feed99 TT |
20108 | { |
20109 | struct gdbarch *gdbarch = objfile->arch (); | |
7c290a04 | 20110 | CORE_ADDR addr = cu_header->read_address (abfd, info_ptr, &bytes_read); |
36d378cf TT |
20111 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); |
20112 | attr->set_address (addr); | |
08feed99 TT |
20113 | info_ptr += bytes_read; |
20114 | } | |
c906108c SS |
20115 | break; |
20116 | case DW_FORM_block2: | |
7b5a2f43 | 20117 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20118 | blk->size = read_2_bytes (abfd, info_ptr); |
20119 | info_ptr += 2; | |
20120 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20121 | info_ptr += blk->size; | |
9d2246fc | 20122 | attr->set_block (blk); |
c906108c SS |
20123 | break; |
20124 | case DW_FORM_block4: | |
7b5a2f43 | 20125 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20126 | blk->size = read_4_bytes (abfd, info_ptr); |
20127 | info_ptr += 4; | |
20128 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20129 | info_ptr += blk->size; | |
9d2246fc | 20130 | attr->set_block (blk); |
c906108c SS |
20131 | break; |
20132 | case DW_FORM_data2: | |
414ad644 | 20133 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20134 | info_ptr += 2; |
20135 | break; | |
20136 | case DW_FORM_data4: | |
414ad644 | 20137 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20138 | info_ptr += 4; |
20139 | break; | |
20140 | case DW_FORM_data8: | |
414ad644 | 20141 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20142 | info_ptr += 8; |
20143 | break; | |
0224619f JK |
20144 | case DW_FORM_data16: |
20145 | blk = dwarf_alloc_block (cu); | |
20146 | blk->size = 16; | |
20147 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20148 | info_ptr += 16; | |
9d2246fc | 20149 | attr->set_block (blk); |
0224619f | 20150 | break; |
2dc7f7b3 | 20151 | case DW_FORM_sec_offset: |
7c290a04 | 20152 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20153 | &bytes_read)); |
2dc7f7b3 TT |
20154 | info_ptr += bytes_read; |
20155 | break; | |
41144253 | 20156 | case DW_FORM_loclistx: |
20157 | { | |
7a5f294d TT |
20158 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20159 | &bytes_read)); | |
20160 | info_ptr += bytes_read; | |
41144253 | 20161 | } |
20162 | break; | |
c906108c | 20163 | case DW_FORM_string: |
c6481205 TT |
20164 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20165 | &bytes_read)); | |
c906108c SS |
20166 | info_ptr += bytes_read; |
20167 | break; | |
4bdf3d34 | 20168 | case DW_FORM_strp: |
36586728 TT |
20169 | if (!cu->per_cu->is_dwz) |
20170 | { | |
c6481205 TT |
20171 | attr->set_string_noncanonical |
20172 | (read_indirect_string (per_objfile, | |
20173 | abfd, info_ptr, cu_header, | |
20174 | &bytes_read)); | |
36586728 TT |
20175 | info_ptr += bytes_read; |
20176 | break; | |
20177 | } | |
20178 | /* FALLTHROUGH */ | |
43988095 JK |
20179 | case DW_FORM_line_strp: |
20180 | if (!cu->per_cu->is_dwz) | |
20181 | { | |
c6481205 TT |
20182 | attr->set_string_noncanonical |
20183 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20184 | &bytes_read)); | |
43988095 JK |
20185 | info_ptr += bytes_read; |
20186 | break; | |
20187 | } | |
20188 | /* FALLTHROUGH */ | |
36586728 TT |
20189 | case DW_FORM_GNU_strp_alt: |
20190 | { | |
a7308ce0 | 20191 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
8266302d TT |
20192 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20193 | &bytes_read); | |
36586728 | 20194 | |
c6481205 TT |
20195 | attr->set_string_noncanonical |
20196 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20197 | info_ptr += bytes_read; |
20198 | } | |
4bdf3d34 | 20199 | break; |
2dc7f7b3 | 20200 | case DW_FORM_exprloc: |
c906108c | 20201 | case DW_FORM_block: |
7b5a2f43 | 20202 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20203 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20204 | info_ptr += bytes_read; | |
20205 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20206 | info_ptr += blk->size; | |
9d2246fc | 20207 | attr->set_block (blk); |
c906108c SS |
20208 | break; |
20209 | case DW_FORM_block1: | |
7b5a2f43 | 20210 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20211 | blk->size = read_1_byte (abfd, info_ptr); |
20212 | info_ptr += 1; | |
20213 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20214 | info_ptr += blk->size; | |
9d2246fc | 20215 | attr->set_block (blk); |
c906108c SS |
20216 | break; |
20217 | case DW_FORM_data1: | |
c906108c | 20218 | case DW_FORM_flag: |
414ad644 | 20219 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20220 | info_ptr += 1; |
20221 | break; | |
2dc7f7b3 | 20222 | case DW_FORM_flag_present: |
414ad644 | 20223 | attr->set_unsigned (1); |
2dc7f7b3 | 20224 | break; |
c906108c | 20225 | case DW_FORM_sdata: |
1bc397c5 | 20226 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20227 | info_ptr += bytes_read; |
20228 | break; | |
18a8505e | 20229 | case DW_FORM_rnglistx: |
7a5f294d TT |
20230 | { |
20231 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20232 | &bytes_read)); | |
20233 | info_ptr += bytes_read; | |
20234 | } | |
20235 | break; | |
d0ce17d8 | 20236 | case DW_FORM_udata: |
414ad644 | 20237 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20238 | info_ptr += bytes_read; |
20239 | break; | |
20240 | case DW_FORM_ref1: | |
7c290a04 | 20241 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20242 | + read_1_byte (abfd, info_ptr))); |
c906108c SS |
20243 | info_ptr += 1; |
20244 | break; | |
20245 | case DW_FORM_ref2: | |
7c290a04 | 20246 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20247 | + read_2_bytes (abfd, info_ptr))); |
c906108c SS |
20248 | info_ptr += 2; |
20249 | break; | |
20250 | case DW_FORM_ref4: | |
7c290a04 | 20251 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20252 | + read_4_bytes (abfd, info_ptr))); |
c906108c SS |
20253 | info_ptr += 4; |
20254 | break; | |
613e1657 | 20255 | case DW_FORM_ref8: |
7c290a04 | 20256 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20257 | + read_8_bytes (abfd, info_ptr))); |
613e1657 KB |
20258 | info_ptr += 8; |
20259 | break; | |
55f1336d | 20260 | case DW_FORM_ref_sig8: |
630ed6b9 | 20261 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20262 | info_ptr += 8; |
20263 | break; | |
c906108c | 20264 | case DW_FORM_ref_udata: |
7c290a04 | 20265 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 TT |
20266 | + read_unsigned_leb128 (abfd, info_ptr, |
20267 | &bytes_read))); | |
c906108c SS |
20268 | info_ptr += bytes_read; |
20269 | break; | |
c906108c | 20270 | case DW_FORM_indirect: |
a8329558 KW |
20271 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20272 | info_ptr += bytes_read; | |
43988095 JK |
20273 | if (form == DW_FORM_implicit_const) |
20274 | { | |
20275 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20276 | info_ptr += bytes_read; | |
20277 | } | |
20278 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20279 | info_ptr); |
43988095 JK |
20280 | break; |
20281 | case DW_FORM_implicit_const: | |
1bc397c5 | 20282 | attr->set_signed (implicit_const); |
a8329558 | 20283 | break; |
336d760d | 20284 | case DW_FORM_addrx: |
3019eac3 | 20285 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20286 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20287 | &bytes_read)); | |
3019eac3 DE |
20288 | info_ptr += bytes_read; |
20289 | break; | |
cf532bd1 | 20290 | case DW_FORM_strx: |
15f18d14 AT |
20291 | case DW_FORM_strx1: |
20292 | case DW_FORM_strx2: | |
20293 | case DW_FORM_strx3: | |
20294 | case DW_FORM_strx4: | |
3019eac3 | 20295 | case DW_FORM_GNU_str_index: |
3019eac3 | 20296 | { |
15f18d14 AT |
20297 | ULONGEST str_index; |
20298 | if (form == DW_FORM_strx1) | |
20299 | { | |
20300 | str_index = read_1_byte (abfd, info_ptr); | |
20301 | info_ptr += 1; | |
20302 | } | |
20303 | else if (form == DW_FORM_strx2) | |
20304 | { | |
20305 | str_index = read_2_bytes (abfd, info_ptr); | |
20306 | info_ptr += 2; | |
20307 | } | |
20308 | else if (form == DW_FORM_strx3) | |
20309 | { | |
20310 | str_index = read_3_bytes (abfd, info_ptr); | |
20311 | info_ptr += 3; | |
20312 | } | |
20313 | else if (form == DW_FORM_strx4) | |
20314 | { | |
20315 | str_index = read_4_bytes (abfd, info_ptr); | |
20316 | info_ptr += 4; | |
20317 | } | |
20318 | else | |
20319 | { | |
20320 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20321 | info_ptr += bytes_read; | |
20322 | } | |
fe56917a | 20323 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20324 | } |
3019eac3 | 20325 | break; |
c906108c | 20326 | default: |
8a3fe4f8 | 20327 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20328 | dwarf_form_name (form), |
20329 | bfd_get_filename (abfd)); | |
c906108c | 20330 | } |
28e94949 | 20331 | |
36586728 | 20332 | /* Super hack. */ |
cd6c91b4 | 20333 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20334 | attr->form = DW_FORM_GNU_ref_alt; |
20335 | ||
28e94949 JB |
20336 | /* We have seen instances where the compiler tried to emit a byte |
20337 | size attribute of -1 which ended up being encoded as an unsigned | |
20338 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20339 | an object of this size seems pretty unlikely so we can relatively | |
20340 | safely treat these cases as if the size attribute was invalid and | |
20341 | treat them as zero by default. */ | |
20342 | if (attr->name == DW_AT_byte_size | |
20343 | && form == DW_FORM_data4 | |
529908cb | 20344 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20345 | { |
20346 | complaint | |
dda83cd7 SM |
20347 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20348 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20349 | attr->set_unsigned (0); |
01c66ae6 | 20350 | } |
28e94949 | 20351 | |
c906108c SS |
20352 | return info_ptr; |
20353 | } | |
20354 | ||
a8329558 KW |
20355 | /* Read an attribute described by an abbreviated attribute. */ |
20356 | ||
d521ce57 | 20357 | static const gdb_byte * |
dee91e82 | 20358 | read_attribute (const struct die_reader_specs *reader, |
4444f407 | 20359 | struct attribute *attr, const struct attr_abbrev *abbrev, |
7a5f294d | 20360 | const gdb_byte *info_ptr) |
a8329558 KW |
20361 | { |
20362 | attr->name = abbrev->name; | |
c6481205 | 20363 | attr->string_is_canonical = 0; |
fe56917a | 20364 | attr->requires_reprocessing = 0; |
43988095 | 20365 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20366 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20367 | } |
20368 | ||
43988095 JK |
20369 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20370 | ||
20371 | static const char * | |
976ca316 | 20372 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20373 | LONGEST str_offset) |
43988095 | 20374 | { |
976ca316 SM |
20375 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20376 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20377 | } |
20378 | ||
43988095 JK |
20379 | /* Return pointer to string at .debug_str offset as read from BUF. |
20380 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20381 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20382 | ||
d521ce57 | 20383 | static const char * |
976ca316 | 20384 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20385 | const gdb_byte *buf, |
cf2c3c16 TT |
20386 | const struct comp_unit_head *cu_header, |
20387 | unsigned int *bytes_read_ptr) | |
20388 | { | |
8266302d | 20389 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20390 | |
976ca316 | 20391 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20392 | } |
20393 | ||
86c0bb4c | 20394 | /* See read.h. */ |
43988095 | 20395 | |
86c0bb4c TT |
20396 | const char * |
20397 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20398 | const struct comp_unit_head *cu_header, |
20399 | unsigned int *bytes_read_ptr) | |
43988095 | 20400 | { |
86c0bb4c | 20401 | bfd *abfd = objfile->obfd; |
8266302d | 20402 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20403 | |
5989a64e | 20404 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20405 | } |
20406 | ||
3019eac3 | 20407 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20408 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20409 | ADDR_SIZE is the size of addresses from the CU header. */ |
20410 | ||
20411 | static CORE_ADDR | |
976ca316 SM |
20412 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20413 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20414 | { |
976ca316 | 20415 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20416 | bfd *abfd = objfile->obfd; |
20417 | const gdb_byte *info_ptr; | |
18a8505e | 20418 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20419 | |
976ca316 SM |
20420 | per_objfile->per_bfd->addr.read (objfile); |
20421 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20422 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20423 | objfile_name (objfile)); |
18a8505e | 20424 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20425 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20426 | error (_("DW_FORM_addr_index pointing outside of " |
20427 | ".debug_addr section [in module %s]"), | |
4262abfb | 20428 | objfile_name (objfile)); |
976ca316 SM |
20429 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20430 | + addr_index * addr_size); | |
3019eac3 DE |
20431 | if (addr_size == 4) |
20432 | return bfd_get_32 (abfd, info_ptr); | |
20433 | else | |
20434 | return bfd_get_64 (abfd, info_ptr); | |
20435 | } | |
20436 | ||
20437 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20438 | ||
20439 | static CORE_ADDR | |
20440 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20441 | { | |
5e22e966 | 20442 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20443 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20444 | } |
20445 | ||
20446 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20447 | ||
20448 | static CORE_ADDR | |
d521ce57 | 20449 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20450 | unsigned int *bytes_read) |
20451 | { | |
5e22e966 | 20452 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20453 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20454 | ||
20455 | return read_addr_index (cu, addr_index); | |
20456 | } | |
20457 | ||
450a1bfc | 20458 | /* See read.h. */ |
3019eac3 DE |
20459 | |
20460 | CORE_ADDR | |
82ca3f51 | 20461 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20462 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20463 | unsigned int addr_index) |
3019eac3 | 20464 | { |
976ca316 | 20465 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20466 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20467 | int addr_size; |
20468 | ||
3019eac3 DE |
20469 | /* We need addr_base and addr_size. |
20470 | If we don't have PER_CU->cu, we have to get it. | |
20471 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20472 | which at this point doesn't seem justified: it's not clear how frequently | |
20473 | it would get used and it would increase the size of every PER_CU. | |
20474 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20475 | so we're not in uncharted territory here. | |
20476 | Alas we need to be a bit more complicated as addr_base is contained | |
20477 | in the DIE. | |
20478 | ||
20479 | We don't need to read the entire CU(/TU). | |
20480 | We just need the header and top level die. | |
a1b64ce1 | 20481 | |
3019eac3 | 20482 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20483 | For now we skip this optimization. */ |
3019eac3 DE |
20484 | |
20485 | if (cu != NULL) | |
20486 | { | |
20487 | addr_base = cu->addr_base; | |
20488 | addr_size = cu->header.addr_size; | |
20489 | } | |
20490 | else | |
20491 | { | |
976ca316 | 20492 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20493 | addr_base = reader.cu->addr_base; |
20494 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20495 | } |
20496 | ||
976ca316 | 20497 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20498 | } |
20499 | ||
18a8505e AT |
20500 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20501 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20502 | DWO file. */ | |
3019eac3 | 20503 | |
d521ce57 | 20504 | static const char * |
18a8505e AT |
20505 | read_str_index (struct dwarf2_cu *cu, |
20506 | struct dwarf2_section_info *str_section, | |
20507 | struct dwarf2_section_info *str_offsets_section, | |
20508 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20509 | { |
976ca316 SM |
20510 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20511 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20512 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20513 | bfd *abfd = objfile->obfd; |
d521ce57 | 20514 | const gdb_byte *info_ptr; |
3019eac3 | 20515 | ULONGEST str_offset; |
cf532bd1 | 20516 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20517 | |
96b79293 TT |
20518 | str_section->read (objfile); |
20519 | str_offsets_section->read (objfile); | |
73869dc2 | 20520 | if (str_section->buffer == NULL) |
18a8505e | 20521 | error (_("%s used without %s section" |
9d8780f0 | 20522 | " in CU at offset %s [in module %s]"), |
96b79293 | 20523 | form_name, str_section->get_name (), |
dda83cd7 | 20524 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20525 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20526 | error (_("%s used without %s section" |
9d8780f0 | 20527 | " in CU at offset %s [in module %s]"), |
96b79293 | 20528 | form_name, str_section->get_name (), |
dda83cd7 | 20529 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20530 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20531 | + str_offsets_base |
3019eac3 DE |
20532 | + str_index * cu->header.offset_size); |
20533 | if (cu->header.offset_size == 4) | |
20534 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20535 | else | |
20536 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20537 | if (str_offset >= str_section->size) |
57d63ce2 | 20538 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20539 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20540 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20541 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20542 | } |
20543 | ||
18a8505e AT |
20544 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20545 | ||
20546 | static const char * | |
20547 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20548 | { | |
20549 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20550 | ? reader->cu->header.addr_size : 0; | |
20551 | return read_str_index (reader->cu, | |
20552 | &reader->dwo_file->sections.str, | |
20553 | &reader->dwo_file->sections.str_offsets, | |
20554 | str_offsets_base, str_index); | |
20555 | } | |
20556 | ||
20557 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20558 | ||
20559 | static const char * | |
20560 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20561 | { | |
5e22e966 | 20562 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20563 | const char *objf_name = objfile_name (objfile); |
20564 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20565 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20566 | ||
20567 | if (!cu->str_offsets_base.has_value ()) | |
20568 | error (_("%s used in Fission stub without %s" | |
20569 | " in CU at offset 0x%lx [in module %s]"), | |
20570 | form_name, str_offsets_attr_name, | |
20571 | (long) cu->header.offset_size, objf_name); | |
20572 | ||
20573 | return read_str_index (cu, | |
5e22e966 SM |
20574 | &cu->per_objfile->per_bfd->str, |
20575 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20576 | *cu->str_offsets_base, str_index); |
20577 | } | |
20578 | ||
3019eac3 DE |
20579 | /* Return the length of an LEB128 number in BUF. */ |
20580 | ||
20581 | static int | |
20582 | leb128_size (const gdb_byte *buf) | |
20583 | { | |
20584 | const gdb_byte *begin = buf; | |
20585 | gdb_byte byte; | |
20586 | ||
20587 | while (1) | |
20588 | { | |
20589 | byte = *buf++; | |
20590 | if ((byte & 128) == 0) | |
20591 | return buf - begin; | |
20592 | } | |
20593 | } | |
20594 | ||
c906108c | 20595 | static void |
e142c38c | 20596 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20597 | { |
20598 | switch (lang) | |
20599 | { | |
20600 | case DW_LANG_C89: | |
76bee0cc | 20601 | case DW_LANG_C99: |
0cfd832f | 20602 | case DW_LANG_C11: |
c906108c | 20603 | case DW_LANG_C: |
d1be3247 | 20604 | case DW_LANG_UPC: |
e142c38c | 20605 | cu->language = language_c; |
c906108c | 20606 | break; |
9c37b5ae | 20607 | case DW_LANG_Java: |
c906108c | 20608 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20609 | case DW_LANG_C_plus_plus_11: |
20610 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20611 | cu->language = language_cplus; |
c906108c | 20612 | break; |
6aecb9c2 JB |
20613 | case DW_LANG_D: |
20614 | cu->language = language_d; | |
20615 | break; | |
c906108c SS |
20616 | case DW_LANG_Fortran77: |
20617 | case DW_LANG_Fortran90: | |
b21b22e0 | 20618 | case DW_LANG_Fortran95: |
f7de9aab MW |
20619 | case DW_LANG_Fortran03: |
20620 | case DW_LANG_Fortran08: | |
e142c38c | 20621 | cu->language = language_fortran; |
c906108c | 20622 | break; |
a766d390 DE |
20623 | case DW_LANG_Go: |
20624 | cu->language = language_go; | |
20625 | break; | |
c906108c | 20626 | case DW_LANG_Mips_Assembler: |
e142c38c | 20627 | cu->language = language_asm; |
c906108c SS |
20628 | break; |
20629 | case DW_LANG_Ada83: | |
8aaf0b47 | 20630 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20631 | cu->language = language_ada; |
20632 | break; | |
72019c9c GM |
20633 | case DW_LANG_Modula2: |
20634 | cu->language = language_m2; | |
20635 | break; | |
fe8e67fd PM |
20636 | case DW_LANG_Pascal83: |
20637 | cu->language = language_pascal; | |
20638 | break; | |
22566fbd DJ |
20639 | case DW_LANG_ObjC: |
20640 | cu->language = language_objc; | |
20641 | break; | |
c44af4eb TT |
20642 | case DW_LANG_Rust: |
20643 | case DW_LANG_Rust_old: | |
20644 | cu->language = language_rust; | |
20645 | break; | |
c906108c SS |
20646 | case DW_LANG_Cobol74: |
20647 | case DW_LANG_Cobol85: | |
c906108c | 20648 | default: |
e142c38c | 20649 | cu->language = language_minimal; |
c906108c SS |
20650 | break; |
20651 | } | |
e142c38c | 20652 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20653 | } |
20654 | ||
20655 | /* Return the named attribute or NULL if not there. */ | |
20656 | ||
20657 | static struct attribute * | |
e142c38c | 20658 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20659 | { |
a48e046c | 20660 | for (;;) |
c906108c | 20661 | { |
a48e046c TT |
20662 | unsigned int i; |
20663 | struct attribute *spec = NULL; | |
20664 | ||
20665 | for (i = 0; i < die->num_attrs; ++i) | |
20666 | { | |
20667 | if (die->attrs[i].name == name) | |
20668 | return &die->attrs[i]; | |
20669 | if (die->attrs[i].name == DW_AT_specification | |
20670 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20671 | spec = &die->attrs[i]; | |
20672 | } | |
20673 | ||
20674 | if (!spec) | |
20675 | break; | |
c906108c | 20676 | |
f2f0e013 | 20677 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20678 | } |
c5aa993b | 20679 | |
c906108c SS |
20680 | return NULL; |
20681 | } | |
20682 | ||
7d45c7c3 KB |
20683 | /* Return the string associated with a string-typed attribute, or NULL if it |
20684 | is either not found or is of an incorrect type. */ | |
20685 | ||
20686 | static const char * | |
20687 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20688 | { | |
20689 | struct attribute *attr; | |
20690 | const char *str = NULL; | |
20691 | ||
20692 | attr = dwarf2_attr (die, name, cu); | |
20693 | ||
20694 | if (attr != NULL) | |
20695 | { | |
95f982e5 | 20696 | str = attr->as_string (); |
e61108c9 | 20697 | if (str == nullptr) |
dda83cd7 | 20698 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20699 | "DIE at %s in module %s"), |
20700 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20701 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20702 | } |
20703 | ||
20704 | return str; | |
20705 | } | |
20706 | ||
a084a2a6 | 20707 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20708 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20709 | static const char * |
20710 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20711 | { | |
20712 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20713 | if (dwo_name == nullptr) | |
20714 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20715 | return dwo_name; | |
20716 | } | |
20717 | ||
05cf31d1 JB |
20718 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20719 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20720 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20721 | |
20722 | static int | |
20723 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20724 | { | |
20725 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20726 | ||
c45bc3f8 | 20727 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
20728 | } |
20729 | ||
3ca72b44 | 20730 | static int |
e142c38c | 20731 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20732 | { |
05cf31d1 JB |
20733 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20734 | which value is non-zero. However, we have to be careful with | |
20735 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20736 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20737 | end up accidently finding a declaration attribute that belongs | |
20738 | to a different DIE referenced by the specification attribute, | |
20739 | even though the given DIE does not have a declaration attribute. */ | |
20740 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20741 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20742 | } |
20743 | ||
63d06c5c | 20744 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20745 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20746 | containing the return value on output. If there is no |
20747 | specification, but there is an abstract origin, that is | |
20748 | returned. */ | |
63d06c5c DC |
20749 | |
20750 | static struct die_info * | |
f2f0e013 | 20751 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20752 | { |
f2f0e013 DJ |
20753 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20754 | *spec_cu); | |
63d06c5c | 20755 | |
edb3359d DJ |
20756 | if (spec_attr == NULL) |
20757 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20758 | ||
63d06c5c DC |
20759 | if (spec_attr == NULL) |
20760 | return NULL; | |
20761 | else | |
f2f0e013 | 20762 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20763 | } |
c906108c | 20764 | |
527f3840 JK |
20765 | /* Stub for free_line_header to match void * callback types. */ |
20766 | ||
20767 | static void | |
20768 | free_line_header_voidp (void *arg) | |
20769 | { | |
9a3c8263 | 20770 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20771 | |
fff8551c | 20772 | delete lh; |
527f3840 JK |
20773 | } |
20774 | ||
83769d0b | 20775 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20776 | |
20777 | static struct dwarf2_section_info * | |
20778 | get_debug_line_section (struct dwarf2_cu *cu) | |
20779 | { | |
20780 | struct dwarf2_section_info *section; | |
976ca316 | 20781 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20782 | |
20783 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20784 | DWO file. */ | |
20785 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20786 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20787 | else if (cu->per_cu->is_dwz) | |
20788 | { | |
a7308ce0 | 20789 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
36586728 TT |
20790 | |
20791 | section = &dwz->line; | |
20792 | } | |
20793 | else | |
976ca316 | 20794 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20795 | |
20796 | return section; | |
20797 | } | |
20798 | ||
debd256d | 20799 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20800 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20801 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20802 | Returns NULL if there is a problem reading the header, e.g., if it |
20803 | has a version we don't understand. | |
debd256d JB |
20804 | |
20805 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20806 | the returned object point into the dwarf line section buffer, |
20807 | and must not be freed. */ | |
ae2de4f8 | 20808 | |
fff8551c | 20809 | static line_header_up |
9c541725 | 20810 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20811 | { |
3019eac3 | 20812 | struct dwarf2_section_info *section; |
976ca316 | 20813 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20814 | |
36586728 | 20815 | section = get_debug_line_section (cu); |
976ca316 | 20816 | section->read (per_objfile->objfile); |
3019eac3 | 20817 | if (section->buffer == NULL) |
debd256d | 20818 | { |
3019eac3 | 20819 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20820 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20821 | else |
b98664d3 | 20822 | complaint (_("missing .debug_line section")); |
debd256d JB |
20823 | return 0; |
20824 | } | |
20825 | ||
0df7ad3a | 20826 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20827 | per_objfile, section, &cu->header); |
debd256d | 20828 | } |
c906108c | 20829 | |
c6da4cef | 20830 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20831 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20832 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20833 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20834 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20835 | |
d521ce57 | 20836 | static const char * |
7ba99d21 | 20837 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20838 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20839 | const char *comp_dir, |
20840 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20841 | { |
d521ce57 TT |
20842 | const char *include_name = fe.name; |
20843 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20844 | const char *pst_filename; |
c6da4cef DE |
20845 | int file_is_pst; |
20846 | ||
8c43009f | 20847 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20848 | |
c89b44cd | 20849 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20850 | if (!IS_ABSOLUTE_PATH (include_name) |
20851 | && (dir_name != NULL || comp_dir != NULL)) | |
20852 | { | |
20853 | /* Avoid creating a duplicate psymtab for PST. | |
20854 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20855 | Before we do the comparison, however, we need to account | |
20856 | for DIR_NAME and COMP_DIR. | |
20857 | First prepend dir_name (if non-NULL). If we still don't | |
20858 | have an absolute path prepend comp_dir (if non-NULL). | |
20859 | However, the directory we record in the include-file's | |
20860 | psymtab does not contain COMP_DIR (to match the | |
20861 | corresponding symtab(s)). | |
20862 | ||
20863 | Example: | |
20864 | ||
20865 | bash$ cd /tmp | |
20866 | bash$ gcc -g ./hello.c | |
20867 | include_name = "hello.c" | |
20868 | dir_name = "." | |
20869 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20870 | DW_AT_name = "./hello.c" |
20871 | ||
20872 | */ | |
c6da4cef DE |
20873 | |
20874 | if (dir_name != NULL) | |
20875 | { | |
c89b44cd TT |
20876 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20877 | include_name, (char *) NULL)); | |
20878 | include_name = name_holder->get (); | |
c6da4cef | 20879 | include_name_to_compare = include_name; |
c6da4cef DE |
20880 | } |
20881 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20882 | { | |
c89b44cd TT |
20883 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20884 | include_name, (char *) NULL)); | |
20885 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20886 | } |
20887 | } | |
20888 | ||
20889 | pst_filename = pst->filename; | |
c89b44cd | 20890 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20891 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20892 | { | |
c89b44cd TT |
20893 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20894 | pst_filename, (char *) NULL)); | |
20895 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20896 | } |
20897 | ||
1e3fad37 | 20898 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20899 | |
c6da4cef DE |
20900 | if (file_is_pst) |
20901 | return NULL; | |
20902 | return include_name; | |
20903 | } | |
20904 | ||
d9b3de22 DE |
20905 | /* State machine to track the state of the line number program. */ |
20906 | ||
6f77053d | 20907 | class lnp_state_machine |
d9b3de22 | 20908 | { |
6f77053d PA |
20909 | public: |
20910 | /* Initialize a machine state for the start of a line number | |
20911 | program. */ | |
804d2729 TT |
20912 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20913 | bool record_lines_p); | |
6f77053d | 20914 | |
8c43009f PA |
20915 | file_entry *current_file () |
20916 | { | |
20917 | /* lh->file_names is 0-based, but the file name numbers in the | |
20918 | statement program are 1-based. */ | |
6f77053d PA |
20919 | return m_line_header->file_name_at (m_file); |
20920 | } | |
20921 | ||
20922 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20923 | we're processing the end of a sequence. */ | |
20924 | void record_line (bool end_sequence); | |
20925 | ||
a8caed5d | 20926 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 20927 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
20928 | void check_line_address (struct dwarf2_cu *cu, |
20929 | const gdb_byte *line_ptr, | |
7ab6656f | 20930 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20931 | |
20932 | void handle_set_discriminator (unsigned int discriminator) | |
20933 | { | |
20934 | m_discriminator = discriminator; | |
20935 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20936 | } | |
20937 | ||
20938 | /* Handle DW_LNE_set_address. */ | |
20939 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20940 | { | |
20941 | m_op_index = 0; | |
20942 | address += baseaddr; | |
20943 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20944 | } | |
20945 | ||
20946 | /* Handle DW_LNS_advance_pc. */ | |
20947 | void handle_advance_pc (CORE_ADDR adjust); | |
20948 | ||
20949 | /* Handle a special opcode. */ | |
20950 | void handle_special_opcode (unsigned char op_code); | |
20951 | ||
20952 | /* Handle DW_LNS_advance_line. */ | |
20953 | void handle_advance_line (int line_delta) | |
20954 | { | |
20955 | advance_line (line_delta); | |
20956 | } | |
20957 | ||
20958 | /* Handle DW_LNS_set_file. */ | |
20959 | void handle_set_file (file_name_index file); | |
20960 | ||
20961 | /* Handle DW_LNS_negate_stmt. */ | |
20962 | void handle_negate_stmt () | |
20963 | { | |
20964 | m_is_stmt = !m_is_stmt; | |
20965 | } | |
20966 | ||
20967 | /* Handle DW_LNS_const_add_pc. */ | |
20968 | void handle_const_add_pc (); | |
20969 | ||
20970 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20971 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20972 | { | |
20973 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20974 | m_op_index = 0; | |
20975 | } | |
20976 | ||
20977 | /* Handle DW_LNS_copy. */ | |
20978 | void handle_copy () | |
20979 | { | |
20980 | record_line (false); | |
20981 | m_discriminator = 0; | |
20982 | } | |
20983 | ||
20984 | /* Handle DW_LNE_end_sequence. */ | |
20985 | void handle_end_sequence () | |
20986 | { | |
804d2729 | 20987 | m_currently_recording_lines = true; |
6f77053d PA |
20988 | } |
20989 | ||
20990 | private: | |
20991 | /* Advance the line by LINE_DELTA. */ | |
20992 | void advance_line (int line_delta) | |
20993 | { | |
20994 | m_line += line_delta; | |
20995 | ||
20996 | if (line_delta != 0) | |
20997 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20998 | } |
20999 | ||
804d2729 TT |
21000 | struct dwarf2_cu *m_cu; |
21001 | ||
6f77053d PA |
21002 | gdbarch *m_gdbarch; |
21003 | ||
21004 | /* True if we're recording lines. | |
21005 | Otherwise we're building partial symtabs and are just interested in | |
21006 | finding include files mentioned by the line number program. */ | |
21007 | bool m_record_lines_p; | |
21008 | ||
8c43009f | 21009 | /* The line number header. */ |
6f77053d | 21010 | line_header *m_line_header; |
8c43009f | 21011 | |
6f77053d PA |
21012 | /* These are part of the standard DWARF line number state machine, |
21013 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21014 | |
6f77053d | 21015 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21016 | /* The line table index of the current file. */ |
21017 | file_name_index m_file = 1; | |
6f77053d PA |
21018 | unsigned int m_line = 1; |
21019 | ||
21020 | /* These are initialized in the constructor. */ | |
21021 | ||
21022 | CORE_ADDR m_address; | |
21023 | bool m_is_stmt; | |
21024 | unsigned int m_discriminator; | |
d9b3de22 DE |
21025 | |
21026 | /* Additional bits of state we need to track. */ | |
21027 | ||
21028 | /* The last file that we called dwarf2_start_subfile for. | |
21029 | This is only used for TLLs. */ | |
6f77053d | 21030 | unsigned int m_last_file = 0; |
d9b3de22 | 21031 | /* The last file a line number was recorded for. */ |
6f77053d | 21032 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21033 | |
1313c56e AB |
21034 | /* The address of the last line entry. */ |
21035 | CORE_ADDR m_last_address; | |
21036 | ||
21037 | /* Set to true when a previous line at the same address (using | |
21038 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21039 | line entry at a new address (m_address different to m_last_address) is | |
21040 | processed. */ | |
21041 | bool m_stmt_at_address = false; | |
21042 | ||
804d2729 TT |
21043 | /* When true, record the lines we decode. */ |
21044 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21045 | |
21046 | /* The last line number that was recorded, used to coalesce | |
21047 | consecutive entries for the same line. This can happen, for | |
21048 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21049 | unsigned int m_last_line = 0; |
21050 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21051 | }; |
d9b3de22 | 21052 | |
6f77053d PA |
21053 | void |
21054 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21055 | { | |
21056 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21057 | / m_line_header->maximum_ops_per_instruction) | |
21058 | * m_line_header->minimum_instruction_length); | |
21059 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21060 | m_op_index = ((m_op_index + adjust) | |
21061 | % m_line_header->maximum_ops_per_instruction); | |
21062 | } | |
d9b3de22 | 21063 | |
6f77053d PA |
21064 | void |
21065 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21066 | { |
6f77053d | 21067 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21068 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21069 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21070 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21071 | / m_line_header->maximum_ops_per_instruction) |
21072 | * m_line_header->minimum_instruction_length); | |
21073 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21074 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21075 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21076 | |
258bf0ee | 21077 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21078 | advance_line (line_delta); |
21079 | record_line (false); | |
21080 | m_discriminator = 0; | |
21081 | } | |
d9b3de22 | 21082 | |
6f77053d PA |
21083 | void |
21084 | lnp_state_machine::handle_set_file (file_name_index file) | |
21085 | { | |
21086 | m_file = file; | |
21087 | ||
21088 | const file_entry *fe = current_file (); | |
21089 | if (fe == NULL) | |
21090 | dwarf2_debug_line_missing_file_complaint (); | |
21091 | else if (m_record_lines_p) | |
21092 | { | |
21093 | const char *dir = fe->include_dir (m_line_header); | |
21094 | ||
c24bdb02 | 21095 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21096 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21097 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21098 | } |
21099 | } | |
21100 | ||
21101 | void | |
21102 | lnp_state_machine::handle_const_add_pc () | |
21103 | { | |
21104 | CORE_ADDR adjust | |
21105 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21106 | ||
21107 | CORE_ADDR addr_adj | |
21108 | = (((m_op_index + adjust) | |
21109 | / m_line_header->maximum_ops_per_instruction) | |
21110 | * m_line_header->minimum_instruction_length); | |
21111 | ||
21112 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21113 | m_op_index = ((m_op_index + adjust) | |
21114 | % m_line_header->maximum_ops_per_instruction); | |
21115 | } | |
d9b3de22 | 21116 | |
a05a36a5 DE |
21117 | /* Return non-zero if we should add LINE to the line number table. |
21118 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21119 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21120 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21121 | had a non-zero discriminator. | |
21122 | ||
21123 | We have to be careful in the presence of discriminators. | |
21124 | E.g., for this line: | |
21125 | ||
21126 | for (i = 0; i < 100000; i++); | |
21127 | ||
21128 | clang can emit four line number entries for that one line, | |
21129 | each with a different discriminator. | |
21130 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21131 | ||
21132 | However, we want gdb to coalesce all four entries into one. | |
21133 | Otherwise the user could stepi into the middle of the line and | |
21134 | gdb would get confused about whether the pc really was in the | |
21135 | middle of the line. | |
21136 | ||
21137 | Things are further complicated by the fact that two consecutive | |
21138 | line number entries for the same line is a heuristic used by gcc | |
21139 | to denote the end of the prologue. So we can't just discard duplicate | |
21140 | entries, we have to be selective about it. The heuristic we use is | |
21141 | that we only collapse consecutive entries for the same line if at least | |
21142 | one of those entries has a non-zero discriminator. PR 17276. | |
21143 | ||
21144 | Note: Addresses in the line number state machine can never go backwards | |
21145 | within one sequence, thus this coalescing is ok. */ | |
21146 | ||
21147 | static int | |
804d2729 TT |
21148 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21149 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21150 | int line_has_non_zero_discriminator, |
21151 | struct subfile *last_subfile) | |
21152 | { | |
c24bdb02 | 21153 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21154 | return 1; |
21155 | if (line != last_line) | |
21156 | return 1; | |
21157 | /* Same line for the same file that we've seen already. | |
21158 | As a last check, for pr 17276, only record the line if the line | |
21159 | has never had a non-zero discriminator. */ | |
21160 | if (!line_has_non_zero_discriminator) | |
21161 | return 1; | |
21162 | return 0; | |
21163 | } | |
21164 | ||
804d2729 TT |
21165 | /* Use the CU's builder to record line number LINE beginning at |
21166 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21167 | |
21168 | static void | |
d9b3de22 | 21169 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21170 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21171 | struct dwarf2_cu *cu) |
252a6764 DE |
21172 | { |
21173 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21174 | ||
27e0867f DE |
21175 | if (dwarf_line_debug) |
21176 | { | |
21177 | fprintf_unfiltered (gdb_stdlog, | |
21178 | "Recording line %u, file %s, address %s\n", | |
21179 | line, lbasename (subfile->name), | |
21180 | paddress (gdbarch, address)); | |
21181 | } | |
21182 | ||
804d2729 | 21183 | if (cu != nullptr) |
8c95582d | 21184 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21185 | } |
21186 | ||
21187 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21188 | Mark the end of a set of line number records. | |
d9b3de22 | 21189 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21190 | If SUBFILE is NULL the request is ignored. */ |
21191 | ||
21192 | static void | |
21193 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21194 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21195 | { |
27e0867f DE |
21196 | if (subfile == NULL) |
21197 | return; | |
21198 | ||
21199 | if (dwarf_line_debug) | |
21200 | { | |
21201 | fprintf_unfiltered (gdb_stdlog, | |
21202 | "Finishing current line, file %s, address %s\n", | |
21203 | lbasename (subfile->name), | |
21204 | paddress (gdbarch, address)); | |
21205 | } | |
21206 | ||
8c95582d | 21207 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21208 | } |
21209 | ||
6f77053d PA |
21210 | void |
21211 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21212 | { |
d9b3de22 DE |
21213 | if (dwarf_line_debug) |
21214 | { | |
21215 | fprintf_unfiltered (gdb_stdlog, | |
21216 | "Processing actual line %u: file %u," | |
94a72be7 | 21217 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21218 | m_line, m_file, |
6f77053d | 21219 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21220 | m_is_stmt, m_discriminator, |
21221 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21222 | } |
21223 | ||
6f77053d | 21224 | file_entry *fe = current_file (); |
8c43009f PA |
21225 | |
21226 | if (fe == NULL) | |
d9b3de22 DE |
21227 | dwarf2_debug_line_missing_file_complaint (); |
21228 | /* For now we ignore lines not starting on an instruction boundary. | |
21229 | But not when processing end_sequence for compatibility with the | |
21230 | previous version of the code. */ | |
6f77053d | 21231 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21232 | { |
8c43009f | 21233 | fe->included_p = 1; |
8c95582d | 21234 | if (m_record_lines_p) |
d9b3de22 | 21235 | { |
1313c56e AB |
21236 | /* When we switch files we insert an end maker in the first file, |
21237 | switch to the second file and add a new line entry. The | |
21238 | problem is that the end marker inserted in the first file will | |
21239 | discard any previous line entries at the same address. If the | |
21240 | line entries in the first file are marked as is-stmt, while | |
21241 | the new line in the second file is non-stmt, then this means | |
21242 | the end marker will discard is-stmt lines so we can have a | |
21243 | non-stmt line. This means that there are less addresses at | |
21244 | which the user can insert a breakpoint. | |
21245 | ||
21246 | To improve this we track the last address in m_last_address, | |
21247 | and whether we have seen an is-stmt at this address. Then | |
21248 | when switching files, if we have seen a stmt at the current | |
21249 | address, and we are switching to create a non-stmt line, then | |
21250 | discard the new line. */ | |
21251 | bool file_changed | |
21252 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21253 | bool ignore_this_line | |
dda83cd7 SM |
21254 | = ((file_changed && !end_sequence && m_last_address == m_address |
21255 | && !m_is_stmt && m_stmt_at_address) | |
21256 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21257 | |
21258 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21259 | { |
804d2729 TT |
21260 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21261 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21262 | } |
21263 | ||
1313c56e | 21264 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21265 | { |
8c95582d AB |
21266 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21267 | ||
804d2729 | 21268 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21269 | m_line_has_non_zero_discriminator, |
21270 | m_last_subfile)) | |
d9b3de22 | 21271 | { |
c24bdb02 | 21272 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21273 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21274 | builder->get_current_subfile (), |
8c95582d | 21275 | m_line, m_address, is_stmt, |
804d2729 | 21276 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21277 | } |
c24bdb02 | 21278 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21279 | m_last_line = m_line; |
d9b3de22 DE |
21280 | } |
21281 | } | |
21282 | } | |
1313c56e AB |
21283 | |
21284 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21285 | have multiple line table entries all at m_address. */ | |
21286 | if (m_last_address != m_address) | |
21287 | { | |
21288 | m_stmt_at_address = false; | |
21289 | m_last_address = m_address; | |
21290 | } | |
21291 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21292 | } |
21293 | ||
804d2729 TT |
21294 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21295 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21296 | { |
804d2729 | 21297 | m_cu = cu; |
6f77053d PA |
21298 | m_gdbarch = arch; |
21299 | m_record_lines_p = record_lines_p; | |
21300 | m_line_header = lh; | |
d9b3de22 | 21301 | |
804d2729 | 21302 | m_currently_recording_lines = true; |
d9b3de22 | 21303 | |
d9b3de22 DE |
21304 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21305 | was a line entry for it so that the backend has a chance to adjust it | |
21306 | and also record it in case it needs it. This is currently used by MIPS | |
21307 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21308 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21309 | m_is_stmt = lh->default_is_stmt; | |
21310 | m_discriminator = 0; | |
1313c56e AB |
21311 | |
21312 | m_last_address = m_address; | |
21313 | m_stmt_at_address = false; | |
252a6764 DE |
21314 | } |
21315 | ||
6f77053d PA |
21316 | void |
21317 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21318 | const gdb_byte *line_ptr, | |
7ab6656f | 21319 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21320 | { |
a8caed5d FS |
21321 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21322 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21323 | located at 0x0. In this case, additionally check that if | |
21324 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21325 | |
a8caed5d FS |
21326 | if ((address == 0 && address < unrelocated_lowpc) |
21327 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21328 | { |
21329 | /* This line table is for a function which has been | |
21330 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21331 | ||
5e22e966 | 21332 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21333 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21334 | ||
b98664d3 | 21335 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21336 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21337 | m_currently_recording_lines = false; |
21338 | /* Note: m_currently_recording_lines is left as false until we see | |
21339 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21340 | } |
21341 | } | |
21342 | ||
f3f5162e | 21343 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21344 | Process the line number information in LH. |
21345 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21346 | program in order to set included_p for every referenced header. */ | |
debd256d | 21347 | |
c906108c | 21348 | static void |
43f3e411 DE |
21349 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21350 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21351 | { |
d521ce57 TT |
21352 | const gdb_byte *line_ptr, *extended_end; |
21353 | const gdb_byte *line_end; | |
a8c50c1f | 21354 | unsigned int bytes_read, extended_len; |
699ca60a | 21355 | unsigned char op_code, extended_op; |
e142c38c | 21356 | CORE_ADDR baseaddr; |
5e22e966 | 21357 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21358 | bfd *abfd = objfile->obfd; |
08feed99 | 21359 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21360 | /* True if we're recording line info (as opposed to building partial |
21361 | symtabs and just interested in finding include files mentioned by | |
21362 | the line number program). */ | |
21363 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21364 | |
b3b3bada | 21365 | baseaddr = objfile->text_section_offset (); |
c906108c | 21366 | |
debd256d JB |
21367 | line_ptr = lh->statement_program_start; |
21368 | line_end = lh->statement_program_end; | |
c906108c SS |
21369 | |
21370 | /* Read the statement sequences until there's nothing left. */ | |
21371 | while (line_ptr < line_end) | |
21372 | { | |
6f77053d PA |
21373 | /* The DWARF line number program state machine. Reset the state |
21374 | machine at the start of each sequence. */ | |
804d2729 | 21375 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21376 | bool end_sequence = false; |
d9b3de22 | 21377 | |
8c43009f | 21378 | if (record_lines_p) |
c906108c | 21379 | { |
8c43009f PA |
21380 | /* Start a subfile for the current file of the state |
21381 | machine. */ | |
21382 | const file_entry *fe = state_machine.current_file (); | |
21383 | ||
21384 | if (fe != NULL) | |
804d2729 | 21385 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21386 | } |
21387 | ||
a738430d | 21388 | /* Decode the table. */ |
d9b3de22 | 21389 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21390 | { |
21391 | op_code = read_1_byte (abfd, line_ptr); | |
21392 | line_ptr += 1; | |
9aa1fe7e | 21393 | |
debd256d | 21394 | if (op_code >= lh->opcode_base) |
6e70227d | 21395 | { |
8e07a239 | 21396 | /* Special opcode. */ |
6f77053d | 21397 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21398 | } |
21399 | else switch (op_code) | |
c906108c SS |
21400 | { |
21401 | case DW_LNS_extended_op: | |
3e43a32a MS |
21402 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21403 | &bytes_read); | |
473b7be6 | 21404 | line_ptr += bytes_read; |
a8c50c1f | 21405 | extended_end = line_ptr + extended_len; |
c906108c SS |
21406 | extended_op = read_1_byte (abfd, line_ptr); |
21407 | line_ptr += 1; | |
8f34b746 TV |
21408 | if (DW_LNE_lo_user <= extended_op |
21409 | && extended_op <= DW_LNE_hi_user) | |
21410 | { | |
21411 | /* Vendor extension, ignore. */ | |
21412 | line_ptr = extended_end; | |
21413 | break; | |
21414 | } | |
c906108c SS |
21415 | switch (extended_op) |
21416 | { | |
21417 | case DW_LNE_end_sequence: | |
6f77053d PA |
21418 | state_machine.handle_end_sequence (); |
21419 | end_sequence = true; | |
c906108c SS |
21420 | break; |
21421 | case DW_LNE_set_address: | |
d9b3de22 DE |
21422 | { |
21423 | CORE_ADDR address | |
c8a7a66f | 21424 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21425 | line_ptr += bytes_read; |
6f77053d PA |
21426 | |
21427 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21428 | lowpc - baseaddr, address); |
6f77053d | 21429 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21430 | } |
c906108c SS |
21431 | break; |
21432 | case DW_LNE_define_file: | |
dda83cd7 SM |
21433 | { |
21434 | const char *cur_file; | |
ecfb656c PA |
21435 | unsigned int mod_time, length; |
21436 | dir_index dindex; | |
6e70227d | 21437 | |
dda83cd7 | 21438 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21439 | &bytes_read); |
dda83cd7 SM |
21440 | line_ptr += bytes_read; |
21441 | dindex = (dir_index) | |
21442 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21443 | line_ptr += bytes_read; | |
21444 | mod_time = | |
21445 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21446 | line_ptr += bytes_read; | |
21447 | length = | |
21448 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21449 | line_ptr += bytes_read; | |
21450 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21451 | } | |
c906108c | 21452 | break; |
d0c6ba3d | 21453 | case DW_LNE_set_discriminator: |
6f77053d PA |
21454 | { |
21455 | /* The discriminator is not interesting to the | |
21456 | debugger; just ignore it. We still need to | |
21457 | check its value though: | |
21458 | if there are consecutive entries for the same | |
21459 | (non-prologue) line we want to coalesce them. | |
21460 | PR 17276. */ | |
21461 | unsigned int discr | |
21462 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21463 | line_ptr += bytes_read; | |
21464 | ||
21465 | state_machine.handle_set_discriminator (discr); | |
21466 | } | |
d0c6ba3d | 21467 | break; |
c906108c | 21468 | default: |
b98664d3 | 21469 | complaint (_("mangled .debug_line section")); |
debd256d | 21470 | return; |
c906108c | 21471 | } |
a8c50c1f DJ |
21472 | /* Make sure that we parsed the extended op correctly. If e.g. |
21473 | we expected a different address size than the producer used, | |
21474 | we may have read the wrong number of bytes. */ | |
21475 | if (line_ptr != extended_end) | |
21476 | { | |
b98664d3 | 21477 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21478 | return; |
21479 | } | |
c906108c SS |
21480 | break; |
21481 | case DW_LNS_copy: | |
6f77053d | 21482 | state_machine.handle_copy (); |
c906108c SS |
21483 | break; |
21484 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21485 | { |
21486 | CORE_ADDR adjust | |
21487 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21488 | line_ptr += bytes_read; |
6f77053d PA |
21489 | |
21490 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21491 | } |
c906108c SS |
21492 | break; |
21493 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21494 | { |
21495 | int line_delta | |
21496 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21497 | line_ptr += bytes_read; |
6f77053d PA |
21498 | |
21499 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21500 | } |
c906108c SS |
21501 | break; |
21502 | case DW_LNS_set_file: | |
d9b3de22 | 21503 | { |
6f77053d | 21504 | file_name_index file |
ecfb656c PA |
21505 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21506 | &bytes_read); | |
d9b3de22 | 21507 | line_ptr += bytes_read; |
8c43009f | 21508 | |
6f77053d | 21509 | state_machine.handle_set_file (file); |
d9b3de22 | 21510 | } |
c906108c SS |
21511 | break; |
21512 | case DW_LNS_set_column: | |
0ad93d4f | 21513 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21514 | line_ptr += bytes_read; |
21515 | break; | |
21516 | case DW_LNS_negate_stmt: | |
6f77053d | 21517 | state_machine.handle_negate_stmt (); |
c906108c SS |
21518 | break; |
21519 | case DW_LNS_set_basic_block: | |
c906108c | 21520 | break; |
c2c6d25f JM |
21521 | /* Add to the address register of the state machine the |
21522 | address increment value corresponding to special opcode | |
a738430d MK |
21523 | 255. I.e., this value is scaled by the minimum |
21524 | instruction length since special opcode 255 would have | |
b021a221 | 21525 | scaled the increment. */ |
c906108c | 21526 | case DW_LNS_const_add_pc: |
6f77053d | 21527 | state_machine.handle_const_add_pc (); |
c906108c SS |
21528 | break; |
21529 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21530 | { |
6f77053d | 21531 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21532 | line_ptr += 2; |
6f77053d PA |
21533 | |
21534 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21535 | } |
c906108c | 21536 | break; |
9aa1fe7e | 21537 | default: |
a738430d MK |
21538 | { |
21539 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21540 | int i; |
a738430d | 21541 | |
debd256d | 21542 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21543 | { |
21544 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21545 | line_ptr += bytes_read; | |
21546 | } | |
21547 | } | |
c906108c SS |
21548 | } |
21549 | } | |
d9b3de22 DE |
21550 | |
21551 | if (!end_sequence) | |
21552 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21553 | ||
21554 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21555 | in which case we still finish recording the last line). */ | |
6f77053d | 21556 | state_machine.record_line (true); |
c906108c | 21557 | } |
f3f5162e DE |
21558 | } |
21559 | ||
21560 | /* Decode the Line Number Program (LNP) for the given line_header | |
21561 | structure and CU. The actual information extracted and the type | |
21562 | of structures created from the LNP depends on the value of PST. | |
21563 | ||
21564 | 1. If PST is NULL, then this procedure uses the data from the program | |
21565 | to create all necessary symbol tables, and their linetables. | |
21566 | ||
21567 | 2. If PST is not NULL, this procedure reads the program to determine | |
21568 | the list of files included by the unit represented by PST, and | |
21569 | builds all the associated partial symbol tables. | |
21570 | ||
21571 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21572 | It is used for relative paths in the line table. | |
21573 | NOTE: When processing partial symtabs (pst != NULL), | |
21574 | comp_dir == pst->dirname. | |
21575 | ||
21576 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21577 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21578 | symtab we don't use it in the name of the psymtabs we create. | |
21579 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21580 | A good testcase for this is mb-inline.exp. |
21581 | ||
527f3840 JK |
21582 | LOWPC is the lowest address in CU (or 0 if not known). |
21583 | ||
21584 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21585 | for its PC<->lines mapping information. Otherwise only the filename | |
21586 | table is read in. */ | |
f3f5162e DE |
21587 | |
21588 | static void | |
21589 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21590 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21591 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21592 | { |
5e22e966 | 21593 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21594 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21595 | |
527f3840 JK |
21596 | if (decode_mapping) |
21597 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21598 | |
21599 | if (decode_for_pst_p) | |
21600 | { | |
aaa75496 | 21601 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21602 | create the psymtab of each included file. */ |
7ba99d21 | 21603 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21604 | if (file_entry.included_p == 1) |
21605 | { | |
c89b44cd | 21606 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21607 | const char *include_name = |
7ba99d21 AT |
21608 | psymtab_include_file_name (lh, file_entry, pst, |
21609 | comp_dir, &name_holder); | |
c6da4cef | 21610 | if (include_name != NULL) |
7b249e47 TT |
21611 | dwarf2_create_include_psymtab |
21612 | (cu->per_objfile->per_bfd, include_name, pst, | |
21613 | cu->per_objfile->per_bfd->partial_symtabs.get (), | |
0072c873 | 21614 | objfile->per_bfd); |
dda83cd7 | 21615 | } |
aaa75496 | 21616 | } |
cb1df416 DJ |
21617 | else |
21618 | { | |
21619 | /* Make sure a symtab is created for every file, even files | |
21620 | which contain only variables (i.e. no code with associated | |
21621 | line numbers). */ | |
c24bdb02 KS |
21622 | buildsym_compunit *builder = cu->get_builder (); |
21623 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21624 | |
7ba99d21 | 21625 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21626 | { |
804d2729 | 21627 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21628 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21629 | { |
c24bdb02 | 21630 | builder->get_current_subfile ()->symtab |
804d2729 | 21631 | = allocate_symtab (cust, |
c24bdb02 | 21632 | builder->get_current_subfile ()->name); |
43f3e411 | 21633 | } |
c24bdb02 | 21634 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21635 | } |
21636 | } | |
c906108c SS |
21637 | } |
21638 | ||
21639 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21640 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21641 | or NULL if not known. |
c906108c SS |
21642 | This routine tries to keep line numbers from identical absolute and |
21643 | relative file names in a common subfile. | |
21644 | ||
21645 | Using the `list' example from the GDB testsuite, which resides in | |
21646 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21647 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21648 | ||
c5aa993b | 21649 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21650 | DW_AT_comp_dir: /compdir |
357e46e7 | 21651 | files.files[0].name: list0.h |
c5aa993b | 21652 | files.files[0].dir: /srcdir |
357e46e7 | 21653 | files.files[1].name: list0.c |
c5aa993b | 21654 | files.files[1].dir: /srcdir |
c906108c SS |
21655 | |
21656 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21657 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21658 | start_subfile will ensure that this happens provided that we pass the | |
21659 | concatenation of files.files[1].dir and files.files[1].name as the | |
21660 | subfile's name. */ | |
c906108c SS |
21661 | |
21662 | static void | |
804d2729 TT |
21663 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21664 | const char *dirname) | |
c906108c | 21665 | { |
43816ebc | 21666 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21667 | |
4d663531 | 21668 | /* In order not to lose the line information directory, |
4f1520fb FR |
21669 | we concatenate it to the filename when it makes sense. |
21670 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21671 | information): ``The directory index is ignored for file names | |
21672 | that represent full path names''. Thus ignoring dirname in the | |
21673 | `else' branch below isn't an issue. */ | |
c906108c | 21674 | |
d5166ae1 | 21675 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21676 | { |
43816ebc TT |
21677 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21678 | filename = copy.get (); | |
d521ce57 | 21679 | } |
c906108c | 21680 | |
c24bdb02 | 21681 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21682 | } |
21683 | ||
804d2729 TT |
21684 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21685 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21686 | |
c24bdb02 KS |
21687 | struct compunit_symtab * |
21688 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21689 | CORE_ADDR low_pc) | |
f4dc4d17 | 21690 | { |
c24bdb02 | 21691 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21692 | |
c24bdb02 | 21693 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21694 | (this->per_objfile->objfile, |
c24bdb02 | 21695 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21696 | |
c24bdb02 | 21697 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21698 | |
c24bdb02 KS |
21699 | get_builder ()->record_debugformat ("DWARF 2"); |
21700 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21701 | |
c24bdb02 | 21702 | processing_has_namespace_info = false; |
43f3e411 | 21703 | |
c24bdb02 | 21704 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21705 | } |
21706 | ||
4c2df51b DJ |
21707 | static void |
21708 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21709 | struct dwarf2_cu *cu) |
4c2df51b | 21710 | { |
5e22e966 | 21711 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21712 | struct comp_unit_head *cu_header = &cu->header; |
21713 | ||
4c2df51b DJ |
21714 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21715 | code here to turn a symbol with DW_AT_external and a | |
21716 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21717 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21718 | with some versions of binutils) where shared libraries could have | |
21719 | relocations against symbols in their debug information - the | |
21720 | minimal symbol would have the right address, but the debug info | |
21721 | would not. It's no longer necessary, because we will explicitly | |
21722 | apply relocations when we read in the debug information now. */ | |
21723 | ||
21724 | /* A DW_AT_location attribute with no contents indicates that a | |
21725 | variable has been optimized away. */ | |
9d2246fc | 21726 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21727 | { |
f1e6e072 | 21728 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21729 | return; |
21730 | } | |
21731 | ||
21732 | /* Handle one degenerate form of location expression specially, to | |
21733 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21734 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21735 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21736 | |
9d2246fc TT |
21737 | if (attr->form_is_block ()) |
21738 | { | |
21739 | struct dwarf_block *block = attr->as_block (); | |
21740 | ||
21741 | if ((block->data[0] == DW_OP_addr | |
21742 | && block->size == 1 + cu_header->addr_size) | |
21743 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 21744 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
21745 | && (block->size |
21746 | == 1 + leb128_size (&block->data[1])))) | |
21747 | { | |
21748 | unsigned int dummy; | |
21749 | ||
21750 | if (block->data[0] == DW_OP_addr) | |
21751 | SET_SYMBOL_VALUE_ADDRESS | |
21752 | (sym, cu->header.read_address (objfile->obfd, | |
21753 | block->data + 1, | |
38583298 | 21754 | &dummy)); |
9d2246fc TT |
21755 | else |
21756 | SET_SYMBOL_VALUE_ADDRESS | |
21757 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21758 | &dummy)); | |
21759 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21760 | fixup_symbol_section (sym, objfile); | |
21761 | SET_SYMBOL_VALUE_ADDRESS | |
21762 | (sym, | |
21763 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 21764 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
21765 | return; |
21766 | } | |
4c2df51b DJ |
21767 | } |
21768 | ||
21769 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21770 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21771 | (i.e. when the value of a register or memory location is | |
21772 | referenced, or a thread-local block, etc.). Then again, it might | |
21773 | not be worthwhile. I'm assuming that it isn't unless performance | |
21774 | or memory numbers show me otherwise. */ | |
21775 | ||
f1e6e072 | 21776 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21777 | |
f1e6e072 | 21778 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21779 | cu->has_loclist = true; |
4c2df51b DJ |
21780 | } |
21781 | ||
c906108c SS |
21782 | /* Given a pointer to a DWARF information entry, figure out if we need |
21783 | to make a symbol table entry for it, and if so, create a new entry | |
21784 | and return a pointer to it. | |
21785 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21786 | used the passed type. |
21787 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21788 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21789 | |
21790 | static struct symbol * | |
5e2db402 TT |
21791 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21792 | struct symbol *space) | |
c906108c | 21793 | { |
976ca316 SM |
21794 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21795 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21796 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21797 | struct symbol *sym = NULL; |
15d034d0 | 21798 | const char *name; |
c906108c SS |
21799 | struct attribute *attr = NULL; |
21800 | struct attribute *attr2 = NULL; | |
e142c38c | 21801 | CORE_ADDR baseaddr; |
e37fd15a SW |
21802 | struct pending **list_to_add = NULL; |
21803 | ||
edb3359d | 21804 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21805 | |
b3b3bada | 21806 | baseaddr = objfile->text_section_offset (); |
c906108c | 21807 | |
94af9270 | 21808 | name = dwarf2_name (die, cu); |
c906108c SS |
21809 | if (name) |
21810 | { | |
34eaf542 | 21811 | int suppress_add = 0; |
94af9270 | 21812 | |
34eaf542 TT |
21813 | if (space) |
21814 | sym = space; | |
21815 | else | |
8c14c3a3 | 21816 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21817 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21818 | |
21819 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21820 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21821 | /* Fortran does not have mangling standard and the mangling does differ |
21822 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21823 | const char *physname |
21824 | = (cu->language == language_fortran | |
21825 | ? dwarf2_full_name (name, die, cu) | |
21826 | : dwarf2_physname (name, die, cu)); | |
21827 | const char *linkagename = dw2_linkage_name (die, cu); | |
21828 | ||
21829 | if (linkagename == nullptr || cu->language == language_ada) | |
21830 | sym->set_linkage_name (physname); | |
21831 | else | |
21832 | { | |
21833 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21834 | sym->set_linkage_name (linkagename); | |
21835 | } | |
f55ee35c | 21836 | |
c906108c | 21837 | /* Default assumptions. |
dda83cd7 | 21838 | Use the passed type or decode it from the die. */ |
176620f1 | 21839 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21840 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21841 | if (type != NULL) |
21842 | SYMBOL_TYPE (sym) = type; | |
21843 | else | |
e7c27a73 | 21844 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21845 | attr = dwarf2_attr (die, |
21846 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21847 | cu); | |
435d3d88 | 21848 | if (attr != nullptr) |
529908cb | 21849 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 21850 | |
edb3359d DJ |
21851 | attr = dwarf2_attr (die, |
21852 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21853 | cu); | |
aa659cfa | 21854 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 21855 | { |
529908cb | 21856 | file_name_index file_index |
aa659cfa | 21857 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 21858 | struct file_entry *fe; |
9a619af0 | 21859 | |
ecfb656c PA |
21860 | if (cu->line_header != NULL) |
21861 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21862 | else |
21863 | fe = NULL; | |
21864 | ||
21865 | if (fe == NULL) | |
b98664d3 | 21866 | complaint (_("file index out of range")); |
8c43009f PA |
21867 | else |
21868 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21869 | } |
21870 | ||
c906108c SS |
21871 | switch (die->tag) |
21872 | { | |
21873 | case DW_TAG_label: | |
e142c38c | 21874 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21875 | if (attr != nullptr) |
3e29f34a MR |
21876 | { |
21877 | CORE_ADDR addr; | |
21878 | ||
95f982e5 | 21879 | addr = attr->as_address (); |
3e29f34a | 21880 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21881 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 21882 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 21883 | } |
8f5c6526 TV |
21884 | else |
21885 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
21886 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21887 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 21888 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21889 | break; |
21890 | case DW_TAG_subprogram: | |
21891 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21892 | finish_block. */ | |
f1e6e072 | 21893 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21894 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 21895 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
21896 | || cu->language == language_ada |
21897 | || cu->language == language_fortran) | |
c906108c | 21898 | { |
dda83cd7 SM |
21899 | /* Subprograms marked external are stored as a global symbol. |
21900 | Ada and Fortran subprograms, whether marked external or | |
21901 | not, are always stored as a global symbol, because we want | |
21902 | to be able to access them globally. For instance, we want | |
21903 | to be able to break on a nested subprogram without having | |
21904 | to specify the context. */ | |
c24bdb02 | 21905 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21906 | } |
21907 | else | |
21908 | { | |
e37fd15a | 21909 | list_to_add = cu->list_in_scope; |
c906108c SS |
21910 | } |
21911 | break; | |
edb3359d DJ |
21912 | case DW_TAG_inlined_subroutine: |
21913 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21914 | finish_block. */ | |
f1e6e072 | 21915 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21916 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21917 | list_to_add = cu->list_in_scope; |
edb3359d | 21918 | break; |
34eaf542 TT |
21919 | case DW_TAG_template_value_param: |
21920 | suppress_add = 1; | |
21921 | /* Fall through. */ | |
72929c62 | 21922 | case DW_TAG_constant: |
c906108c | 21923 | case DW_TAG_variable: |
254e6b9e | 21924 | case DW_TAG_member: |
0963b4bd MS |
21925 | /* Compilation with minimal debug info may result in |
21926 | variables with missing type entries. Change the | |
21927 | misleading `void' type to something sensible. */ | |
78134374 | 21928 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 21929 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21930 | |
e142c38c | 21931 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21932 | /* In the case of DW_TAG_member, we should only be called for |
21933 | static const members. */ | |
21934 | if (die->tag == DW_TAG_member) | |
21935 | { | |
3863f96c DE |
21936 | /* dwarf2_add_field uses die_is_declaration, |
21937 | so we do the same. */ | |
254e6b9e DE |
21938 | gdb_assert (die_is_declaration (die, cu)); |
21939 | gdb_assert (attr); | |
21940 | } | |
435d3d88 | 21941 | if (attr != nullptr) |
c906108c | 21942 | { |
e7c27a73 | 21943 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21944 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21945 | if (!suppress_add) |
34eaf542 | 21946 | { |
c45bc3f8 | 21947 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 21948 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21949 | else |
e37fd15a | 21950 | list_to_add = cu->list_in_scope; |
34eaf542 | 21951 | } |
c906108c SS |
21952 | break; |
21953 | } | |
e142c38c | 21954 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21955 | if (attr != nullptr) |
c906108c | 21956 | { |
e7c27a73 | 21957 | var_decode_location (attr, sym, cu); |
e142c38c | 21958 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21959 | |
21960 | /* Fortran explicitly imports any global symbols to the local | |
21961 | scope by DW_TAG_common_block. */ | |
21962 | if (cu->language == language_fortran && die->parent | |
21963 | && die->parent->tag == DW_TAG_common_block) | |
21964 | attr2 = NULL; | |
21965 | ||
caac4577 JG |
21966 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21967 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 21968 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
21969 | { |
21970 | /* When a static variable is eliminated by the linker, | |
21971 | the corresponding debug information is not stripped | |
21972 | out, but the variable address is set to null; | |
21973 | do not add such variables into symbol table. */ | |
21974 | } | |
c45bc3f8 | 21975 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 21976 | { |
4b610737 TT |
21977 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21978 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 21979 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
21980 | { |
21981 | /* A global static variable might be subject to | |
21982 | copy relocation. We first check for a local | |
21983 | minsym, though, because maybe the symbol was | |
21984 | marked hidden, in which case this would not | |
21985 | apply. */ | |
21986 | bound_minimal_symbol found | |
21987 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21988 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21989 | if (found.minsym != nullptr) |
21990 | sym->maybe_copied = 1; | |
21991 | } | |
f55ee35c | 21992 | |
1c809c68 TT |
21993 | /* A variable with DW_AT_external is never static, |
21994 | but it may be block-scoped. */ | |
804d2729 | 21995 | list_to_add |
c24bdb02 KS |
21996 | = ((cu->list_in_scope |
21997 | == cu->get_builder ()->get_file_symbols ()) | |
21998 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21999 | : cu->list_in_scope); |
1c809c68 | 22000 | } |
c906108c | 22001 | else |
e37fd15a | 22002 | list_to_add = cu->list_in_scope; |
c906108c SS |
22003 | } |
22004 | else | |
22005 | { | |
22006 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22007 | If it is an external symbol and we have type information |
22008 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22009 | The address of the variable will then be determined from | |
22010 | the minimal symbol table whenever the variable is | |
22011 | referenced. */ | |
e142c38c | 22012 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22013 | |
22014 | /* Fortran explicitly imports any global symbols to the local | |
22015 | scope by DW_TAG_common_block. */ | |
22016 | if (cu->language == language_fortran && die->parent | |
22017 | && die->parent->tag == DW_TAG_common_block) | |
22018 | { | |
22019 | /* SYMBOL_CLASS doesn't matter here because | |
22020 | read_common_block is going to reset it. */ | |
22021 | if (!suppress_add) | |
22022 | list_to_add = cu->list_in_scope; | |
22023 | } | |
c45bc3f8 | 22024 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22025 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22026 | { |
0fe7935b DJ |
22027 | /* A variable with DW_AT_external is never static, but it |
22028 | may be block-scoped. */ | |
804d2729 | 22029 | list_to_add |
c24bdb02 KS |
22030 | = ((cu->list_in_scope |
22031 | == cu->get_builder ()->get_file_symbols ()) | |
22032 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22033 | : cu->list_in_scope); |
0fe7935b | 22034 | |
f1e6e072 | 22035 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22036 | } |
442ddf59 JK |
22037 | else if (!die_is_declaration (die, cu)) |
22038 | { | |
22039 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22040 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22041 | if (!suppress_add) |
22042 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22043 | } |
c906108c SS |
22044 | } |
22045 | break; | |
22046 | case DW_TAG_formal_parameter: | |
a60f3166 | 22047 | { |
3db19b2d TV |
22048 | /* If we are inside a function, mark this as an argument. If |
22049 | not, we might be looking at an argument to an inlined function | |
22050 | when we do not have enough information to show inlined frames; | |
22051 | pretend it's a local variable in that case so that the user can | |
22052 | still see it. */ | |
22053 | struct context_stack *curr | |
22054 | = cu->get_builder ()->get_current_context_stack (); | |
22055 | if (curr != nullptr && curr->name != nullptr) | |
22056 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
a60f3166 | 22057 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22058 | if (attr != nullptr) |
a60f3166 TT |
22059 | { |
22060 | var_decode_location (attr, sym, cu); | |
22061 | } | |
22062 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22063 | if (attr != nullptr) |
a60f3166 TT |
22064 | { |
22065 | dwarf2_const_value (attr, sym, cu); | |
22066 | } | |
f346a30d | 22067 | |
a60f3166 TT |
22068 | list_to_add = cu->list_in_scope; |
22069 | } | |
c906108c SS |
22070 | break; |
22071 | case DW_TAG_unspecified_parameters: | |
22072 | /* From varargs functions; gdb doesn't seem to have any | |
22073 | interest in this information, so just ignore it for now. | |
22074 | (FIXME?) */ | |
22075 | break; | |
34eaf542 TT |
22076 | case DW_TAG_template_type_param: |
22077 | suppress_add = 1; | |
22078 | /* Fall through. */ | |
c906108c | 22079 | case DW_TAG_class_type: |
680b30c7 | 22080 | case DW_TAG_interface_type: |
c906108c SS |
22081 | case DW_TAG_structure_type: |
22082 | case DW_TAG_union_type: | |
72019c9c | 22083 | case DW_TAG_set_type: |
c906108c | 22084 | case DW_TAG_enumeration_type: |
f1e6e072 | 22085 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22086 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22087 | |
63d06c5c | 22088 | { |
9c37b5ae | 22089 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22090 | really ever be static objects: otherwise, if you try |
22091 | to, say, break of a class's method and you're in a file | |
22092 | which doesn't mention that class, it won't work unless | |
22093 | the check for all static symbols in lookup_symbol_aux | |
22094 | saves you. See the OtherFileClass tests in | |
22095 | gdb.c++/namespace.exp. */ | |
22096 | ||
e37fd15a | 22097 | if (!suppress_add) |
34eaf542 | 22098 | { |
c24bdb02 | 22099 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22100 | list_to_add |
c24bdb02 | 22101 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22102 | && cu->language == language_cplus |
c24bdb02 | 22103 | ? builder->get_global_symbols () |
804d2729 | 22104 | : cu->list_in_scope); |
63d06c5c | 22105 | |
64382290 | 22106 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22107 | ... }" also defines a typedef for "foo". */ |
64382290 | 22108 | if (cu->language == language_cplus |
45280282 | 22109 | || cu->language == language_ada |
c44af4eb TT |
22110 | || cu->language == language_d |
22111 | || cu->language == language_rust) | |
64382290 TT |
22112 | { |
22113 | /* The symbol's name is already allocated along | |
22114 | with this objfile, so we don't need to | |
22115 | duplicate it for the type. */ | |
7d93a1e0 | 22116 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22117 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22118 | } |
63d06c5c DC |
22119 | } |
22120 | } | |
c906108c SS |
22121 | break; |
22122 | case DW_TAG_typedef: | |
f1e6e072 | 22123 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22124 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22125 | list_to_add = cu->list_in_scope; |
63d06c5c | 22126 | break; |
d8f62e84 | 22127 | case DW_TAG_array_type: |
c906108c | 22128 | case DW_TAG_base_type: |
dda83cd7 | 22129 | case DW_TAG_subrange_type: |
f1e6e072 | 22130 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22131 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22132 | list_to_add = cu->list_in_scope; |
c906108c SS |
22133 | break; |
22134 | case DW_TAG_enumerator: | |
e142c38c | 22135 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22136 | if (attr != nullptr) |
c906108c | 22137 | { |
e7c27a73 | 22138 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22139 | } |
63d06c5c DC |
22140 | { |
22141 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22142 | DW_TAG_class_type, etc. block. */ | |
22143 | ||
804d2729 | 22144 | list_to_add |
c24bdb02 | 22145 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22146 | && cu->language == language_cplus |
c24bdb02 | 22147 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22148 | : cu->list_in_scope); |
63d06c5c | 22149 | } |
c906108c | 22150 | break; |
74921315 | 22151 | case DW_TAG_imported_declaration: |
5c4e30ca | 22152 | case DW_TAG_namespace: |
f1e6e072 | 22153 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22154 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22155 | break; |
530e8392 KB |
22156 | case DW_TAG_module: |
22157 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22158 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22159 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22160 | break; |
4357ac6c | 22161 | case DW_TAG_common_block: |
f1e6e072 | 22162 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22163 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22164 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22165 | break; |
c906108c SS |
22166 | default: |
22167 | /* Not a tag we recognize. Hopefully we aren't processing | |
22168 | trash data, but since we must specifically ignore things | |
22169 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22170 | this point. */ |
b98664d3 | 22171 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22172 | dwarf_tag_name (die->tag)); |
c906108c SS |
22173 | break; |
22174 | } | |
df8a16a1 | 22175 | |
e37fd15a SW |
22176 | if (suppress_add) |
22177 | { | |
22178 | sym->hash_next = objfile->template_symbols; | |
22179 | objfile->template_symbols = sym; | |
22180 | list_to_add = NULL; | |
22181 | } | |
22182 | ||
22183 | if (list_to_add != NULL) | |
d3cb6808 | 22184 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22185 | |
df8a16a1 DJ |
22186 | /* For the benefit of old versions of GCC, check for anonymous |
22187 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22188 | if (!cu->processing_has_namespace_info |
94af9270 | 22189 | && cu->language == language_cplus) |
c24bdb02 | 22190 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22191 | } |
22192 | return (sym); | |
22193 | } | |
22194 | ||
98bfdba5 PA |
22195 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22196 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22197 | standard (v4) is not entirely clear about the meaning of using | |
22198 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22199 | wider than the data. The conclusion of a discussion on the DWARF | |
22200 | list was that this is unspecified. We choose to always zero-extend | |
22201 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22202 | |
98bfdba5 | 22203 | static gdb_byte * |
ff39bb5e | 22204 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22205 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22206 | { |
5e22e966 | 22207 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22208 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22209 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22210 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22211 | |
22212 | if (bits < sizeof (*value) * 8) | |
22213 | { | |
22214 | l &= ((LONGEST) 1 << bits) - 1; | |
22215 | *value = l; | |
22216 | } | |
22217 | else if (bits == sizeof (*value) * 8) | |
22218 | *value = l; | |
22219 | else | |
22220 | { | |
224c3ddb | 22221 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22222 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22223 | return bytes; | |
22224 | } | |
22225 | ||
22226 | return NULL; | |
22227 | } | |
22228 | ||
22229 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22230 | the value does not fit in *VALUE, set *BYTES - either already | |
22231 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22232 | or, set *BATON, if we translated the constant to a location | |
22233 | expression. */ | |
22234 | ||
22235 | static void | |
ff39bb5e | 22236 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22237 | const char *name, struct obstack *obstack, |
22238 | struct dwarf2_cu *cu, | |
d521ce57 | 22239 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22240 | struct dwarf2_locexpr_baton **baton) |
22241 | { | |
5e22e966 | 22242 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22243 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22244 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22245 | struct dwarf_block *blk; |
98bfdba5 PA |
22246 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22247 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22248 | ||
22249 | *value = 0; | |
22250 | *bytes = NULL; | |
22251 | *baton = NULL; | |
c906108c SS |
22252 | |
22253 | switch (attr->form) | |
22254 | { | |
22255 | case DW_FORM_addr: | |
336d760d | 22256 | case DW_FORM_addrx: |
3019eac3 | 22257 | case DW_FORM_GNU_addr_index: |
ac56253d | 22258 | { |
ac56253d TT |
22259 | gdb_byte *data; |
22260 | ||
98bfdba5 PA |
22261 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22262 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22263 | cu_header->addr_size, |
98bfdba5 | 22264 | TYPE_LENGTH (type)); |
ac56253d TT |
22265 | /* Symbols of this form are reasonably rare, so we just |
22266 | piggyback on the existing location code rather than writing | |
22267 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22268 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22269 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22270 | (*baton)->per_cu = cu->per_cu; |
22271 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22272 | |
98bfdba5 | 22273 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22274 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22275 | (*baton)->data = data; |
ac56253d TT |
22276 | |
22277 | data[0] = DW_OP_addr; | |
22278 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22279 | byte_order, attr->as_address ()); |
ac56253d | 22280 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22281 | } |
c906108c | 22282 | break; |
4ac36638 | 22283 | case DW_FORM_string: |
93b5768b | 22284 | case DW_FORM_strp: |
cf532bd1 | 22285 | case DW_FORM_strx: |
3019eac3 | 22286 | case DW_FORM_GNU_str_index: |
36586728 | 22287 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22288 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22289 | directly to it. */ |
2c830f54 | 22290 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22291 | break; |
c906108c SS |
22292 | case DW_FORM_block1: |
22293 | case DW_FORM_block2: | |
22294 | case DW_FORM_block4: | |
22295 | case DW_FORM_block: | |
2dc7f7b3 | 22296 | case DW_FORM_exprloc: |
0224619f | 22297 | case DW_FORM_data16: |
9d2246fc | 22298 | blk = attr->as_block (); |
98bfdba5 PA |
22299 | if (TYPE_LENGTH (type) != blk->size) |
22300 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22301 | TYPE_LENGTH (type)); | |
22302 | *bytes = blk->data; | |
c906108c | 22303 | break; |
2df3850c JM |
22304 | |
22305 | /* The DW_AT_const_value attributes are supposed to carry the | |
22306 | symbol's value "represented as it would be on the target | |
22307 | architecture." By the time we get here, it's already been | |
22308 | converted to host endianness, so we just need to sign- or | |
22309 | zero-extend it as appropriate. */ | |
22310 | case DW_FORM_data1: | |
3aef2284 | 22311 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22312 | break; |
c906108c | 22313 | case DW_FORM_data2: |
3aef2284 | 22314 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22315 | break; |
c906108c | 22316 | case DW_FORM_data4: |
3aef2284 | 22317 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22318 | break; |
c906108c | 22319 | case DW_FORM_data8: |
3aef2284 | 22320 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22321 | break; |
22322 | ||
c906108c | 22323 | case DW_FORM_sdata: |
663c44ac | 22324 | case DW_FORM_implicit_const: |
1bc397c5 | 22325 | *value = attr->as_signed (); |
2df3850c JM |
22326 | break; |
22327 | ||
c906108c | 22328 | case DW_FORM_udata: |
529908cb | 22329 | *value = attr->as_unsigned (); |
c906108c | 22330 | break; |
2df3850c | 22331 | |
c906108c | 22332 | default: |
b98664d3 | 22333 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22334 | dwarf_form_name (attr->form)); |
98bfdba5 | 22335 | *value = 0; |
c906108c SS |
22336 | break; |
22337 | } | |
22338 | } | |
22339 | ||
2df3850c | 22340 | |
98bfdba5 PA |
22341 | /* Copy constant value from an attribute to a symbol. */ |
22342 | ||
2df3850c | 22343 | static void |
ff39bb5e | 22344 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22345 | struct dwarf2_cu *cu) |
2df3850c | 22346 | { |
5e22e966 | 22347 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22348 | LONGEST value; |
d521ce57 | 22349 | const gdb_byte *bytes; |
98bfdba5 | 22350 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22351 | |
98bfdba5 | 22352 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22353 | sym->print_name (), |
98bfdba5 PA |
22354 | &objfile->objfile_obstack, cu, |
22355 | &value, &bytes, &baton); | |
2df3850c | 22356 | |
98bfdba5 PA |
22357 | if (baton != NULL) |
22358 | { | |
98bfdba5 | 22359 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22360 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22361 | } |
22362 | else if (bytes != NULL) | |
22363 | { | |
22364 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22365 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22366 | } |
22367 | else | |
22368 | { | |
22369 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22370 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22371 | } |
2df3850c JM |
22372 | } |
22373 | ||
c906108c SS |
22374 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22375 | ||
22376 | static struct type * | |
e7c27a73 | 22377 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22378 | { |
c906108c | 22379 | struct attribute *type_attr; |
c906108c | 22380 | |
e142c38c | 22381 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22382 | if (!type_attr) |
22383 | { | |
5e22e966 | 22384 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22385 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22386 | return objfile_type (objfile)->builtin_void; |
c906108c | 22387 | } |
348e048f | 22388 | |
673bfd45 | 22389 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22390 | } |
22391 | ||
b4ba55a1 JB |
22392 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22393 | that allows to find parallel types through that information instead | |
22394 | of having to do expensive parallel lookups by type name. */ | |
22395 | ||
22396 | static int | |
22397 | need_gnat_info (struct dwarf2_cu *cu) | |
22398 | { | |
de4cb04a JB |
22399 | /* Assume that the Ada compiler was GNAT, which always produces |
22400 | the auxiliary information. */ | |
22401 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22402 | } |
22403 | ||
b4ba55a1 JB |
22404 | /* Return the auxiliary type of the die in question using its |
22405 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22406 | attribute is not present. */ | |
22407 | ||
22408 | static struct type * | |
22409 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22410 | { | |
b4ba55a1 | 22411 | struct attribute *type_attr; |
b4ba55a1 JB |
22412 | |
22413 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22414 | if (!type_attr) | |
22415 | return NULL; | |
22416 | ||
673bfd45 | 22417 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22418 | } |
22419 | ||
22420 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22421 | descriptive type accordingly. */ | |
22422 | ||
22423 | static void | |
22424 | set_descriptive_type (struct type *type, struct die_info *die, | |
22425 | struct dwarf2_cu *cu) | |
22426 | { | |
22427 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22428 | ||
22429 | if (descriptive_type) | |
22430 | { | |
22431 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22432 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22433 | } | |
22434 | } | |
22435 | ||
c906108c SS |
22436 | /* Return the containing type of the die in question using its |
22437 | DW_AT_containing_type attribute. */ | |
22438 | ||
22439 | static struct type * | |
e7c27a73 | 22440 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22441 | { |
c906108c | 22442 | struct attribute *type_attr; |
5e22e966 | 22443 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22444 | |
e142c38c | 22445 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22446 | if (!type_attr) |
22447 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22448 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22449 | |
673bfd45 | 22450 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22451 | } |
22452 | ||
ac9ec31b DE |
22453 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22454 | ||
22455 | static struct type * | |
22456 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22457 | { | |
976ca316 SM |
22458 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22459 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22460 | char *saved; |
ac9ec31b | 22461 | |
528e1572 SM |
22462 | std::string message |
22463 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22464 | objfile_name (objfile), | |
22465 | sect_offset_str (cu->header.sect_off), | |
22466 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22467 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22468 | |
19f392bc | 22469 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22470 | } |
22471 | ||
673bfd45 | 22472 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22473 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22474 | DW_AT_containing_type. | |
673bfd45 DE |
22475 | If there is no type substitute an error marker. */ |
22476 | ||
c906108c | 22477 | static struct type * |
ff39bb5e | 22478 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22479 | struct dwarf2_cu *cu) |
c906108c | 22480 | { |
976ca316 SM |
22481 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22482 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22483 | struct type *this_type; |
22484 | ||
ac9ec31b DE |
22485 | gdb_assert (attr->name == DW_AT_type |
22486 | || attr->name == DW_AT_GNAT_descriptive_type | |
22487 | || attr->name == DW_AT_containing_type); | |
22488 | ||
673bfd45 DE |
22489 | /* First see if we have it cached. */ |
22490 | ||
36586728 TT |
22491 | if (attr->form == DW_FORM_GNU_ref_alt) |
22492 | { | |
22493 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22494 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22495 | |
976ca316 SM |
22496 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22497 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22498 | } |
cd6c91b4 | 22499 | else if (attr->form_is_ref ()) |
673bfd45 | 22500 | { |
0826b30a | 22501 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22502 | |
976ca316 | 22503 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22504 | } |
55f1336d | 22505 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22506 | { |
630ed6b9 | 22507 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22508 | |
ac9ec31b | 22509 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22510 | } |
22511 | else | |
22512 | { | |
b98664d3 | 22513 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22514 | " at %s [in module %s]"), |
22515 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22516 | objfile_name (objfile)); |
ac9ec31b | 22517 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22518 | } |
22519 | ||
22520 | /* If not cached we need to read it in. */ | |
22521 | ||
22522 | if (this_type == NULL) | |
22523 | { | |
ac9ec31b | 22524 | struct die_info *type_die = NULL; |
673bfd45 DE |
22525 | struct dwarf2_cu *type_cu = cu; |
22526 | ||
cd6c91b4 | 22527 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22528 | type_die = follow_die_ref (die, attr, &type_cu); |
22529 | if (type_die == NULL) | |
22530 | return build_error_marker_type (cu, die); | |
22531 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22532 | from an inter-CU reference and the type's CU got expanded before |
22533 | ours. */ | |
ac9ec31b | 22534 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22535 | } |
22536 | ||
22537 | /* If we still don't have a type use an error marker. */ | |
22538 | ||
22539 | if (this_type == NULL) | |
ac9ec31b | 22540 | return build_error_marker_type (cu, die); |
673bfd45 | 22541 | |
f792889a | 22542 | return this_type; |
c906108c SS |
22543 | } |
22544 | ||
673bfd45 DE |
22545 | /* Return the type in DIE, CU. |
22546 | Returns NULL for invalid types. | |
22547 | ||
02142a6c | 22548 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22549 | and only reads the die in if necessary. |
22550 | ||
22551 | NOTE: This can be called when reading in partial or full symbols. */ | |
22552 | ||
f792889a | 22553 | static struct type * |
e7c27a73 | 22554 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22555 | { |
f792889a DJ |
22556 | struct type *this_type; |
22557 | ||
22558 | this_type = get_die_type (die, cu); | |
22559 | if (this_type) | |
22560 | return this_type; | |
22561 | ||
673bfd45 DE |
22562 | return read_type_die_1 (die, cu); |
22563 | } | |
22564 | ||
22565 | /* Read the type in DIE, CU. | |
22566 | Returns NULL for invalid types. */ | |
22567 | ||
22568 | static struct type * | |
22569 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22570 | { | |
22571 | struct type *this_type = NULL; | |
22572 | ||
c906108c SS |
22573 | switch (die->tag) |
22574 | { | |
22575 | case DW_TAG_class_type: | |
680b30c7 | 22576 | case DW_TAG_interface_type: |
c906108c SS |
22577 | case DW_TAG_structure_type: |
22578 | case DW_TAG_union_type: | |
f792889a | 22579 | this_type = read_structure_type (die, cu); |
c906108c SS |
22580 | break; |
22581 | case DW_TAG_enumeration_type: | |
f792889a | 22582 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22583 | break; |
22584 | case DW_TAG_subprogram: | |
22585 | case DW_TAG_subroutine_type: | |
edb3359d | 22586 | case DW_TAG_inlined_subroutine: |
f792889a | 22587 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22588 | break; |
22589 | case DW_TAG_array_type: | |
f792889a | 22590 | this_type = read_array_type (die, cu); |
c906108c | 22591 | break; |
72019c9c | 22592 | case DW_TAG_set_type: |
f792889a | 22593 | this_type = read_set_type (die, cu); |
72019c9c | 22594 | break; |
c906108c | 22595 | case DW_TAG_pointer_type: |
f792889a | 22596 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22597 | break; |
22598 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22599 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22600 | break; |
22601 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22602 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22603 | break; | |
22604 | case DW_TAG_rvalue_reference_type: | |
22605 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22606 | break; |
22607 | case DW_TAG_const_type: | |
f792889a | 22608 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22609 | break; |
22610 | case DW_TAG_volatile_type: | |
f792889a | 22611 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22612 | break; |
06d66ee9 TT |
22613 | case DW_TAG_restrict_type: |
22614 | this_type = read_tag_restrict_type (die, cu); | |
22615 | break; | |
c906108c | 22616 | case DW_TAG_string_type: |
f792889a | 22617 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22618 | break; |
22619 | case DW_TAG_typedef: | |
f792889a | 22620 | this_type = read_typedef (die, cu); |
c906108c | 22621 | break; |
a02abb62 | 22622 | case DW_TAG_subrange_type: |
f792889a | 22623 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22624 | break; |
c906108c | 22625 | case DW_TAG_base_type: |
f792889a | 22626 | this_type = read_base_type (die, cu); |
c906108c | 22627 | break; |
81a17f79 | 22628 | case DW_TAG_unspecified_type: |
f792889a | 22629 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22630 | break; |
0114d602 DJ |
22631 | case DW_TAG_namespace: |
22632 | this_type = read_namespace_type (die, cu); | |
22633 | break; | |
f55ee35c JK |
22634 | case DW_TAG_module: |
22635 | this_type = read_module_type (die, cu); | |
22636 | break; | |
a2c2acaf MW |
22637 | case DW_TAG_atomic_type: |
22638 | this_type = read_tag_atomic_type (die, cu); | |
22639 | break; | |
c906108c | 22640 | default: |
b98664d3 | 22641 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22642 | dwarf_tag_name (die->tag)); |
c906108c SS |
22643 | break; |
22644 | } | |
63d06c5c | 22645 | |
f792889a | 22646 | return this_type; |
63d06c5c DC |
22647 | } |
22648 | ||
abc72ce4 DE |
22649 | /* See if we can figure out if the class lives in a namespace. We do |
22650 | this by looking for a member function; its demangled name will | |
22651 | contain namespace info, if there is any. | |
22652 | Return the computed name or NULL. | |
22653 | Space for the result is allocated on the objfile's obstack. | |
22654 | This is the full-die version of guess_partial_die_structure_name. | |
22655 | In this case we know DIE has no useful parent. */ | |
22656 | ||
43816ebc | 22657 | static const char * |
abc72ce4 DE |
22658 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22659 | { | |
22660 | struct die_info *spec_die; | |
22661 | struct dwarf2_cu *spec_cu; | |
22662 | struct die_info *child; | |
5e22e966 | 22663 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22664 | |
22665 | spec_cu = cu; | |
22666 | spec_die = die_specification (die, &spec_cu); | |
22667 | if (spec_die != NULL) | |
22668 | { | |
22669 | die = spec_die; | |
22670 | cu = spec_cu; | |
22671 | } | |
22672 | ||
22673 | for (child = die->child; | |
22674 | child != NULL; | |
22675 | child = child->sibling) | |
22676 | { | |
22677 | if (child->tag == DW_TAG_subprogram) | |
22678 | { | |
73b9be8b | 22679 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22680 | |
7d45c7c3 | 22681 | if (linkage_name != NULL) |
abc72ce4 | 22682 | { |
43816ebc | 22683 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22684 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22685 | const char *name = NULL; |
abc72ce4 DE |
22686 | |
22687 | if (actual_name != NULL) | |
22688 | { | |
15d034d0 | 22689 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22690 | |
22691 | if (die_name != NULL | |
43816ebc | 22692 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22693 | { |
22694 | /* Strip off the class name from the full name. | |
22695 | We want the prefix. */ | |
22696 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22697 | int actual_name_len = strlen (actual_name.get ()); |
22698 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22699 | |
22700 | /* Test for '::' as a sanity check. */ | |
22701 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22702 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22703 | name = obstack_strndup ( |
e3b94546 | 22704 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22705 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22706 | } |
22707 | } | |
abc72ce4 DE |
22708 | return name; |
22709 | } | |
22710 | } | |
22711 | } | |
22712 | ||
22713 | return NULL; | |
22714 | } | |
22715 | ||
96408a79 SA |
22716 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22717 | prefix part in such case. See | |
22718 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22719 | ||
a121b7c1 | 22720 | static const char * |
96408a79 SA |
22721 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22722 | { | |
22723 | struct attribute *attr; | |
e6a959d6 | 22724 | const char *base; |
96408a79 SA |
22725 | |
22726 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22727 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22728 | return NULL; | |
22729 | ||
7d45c7c3 | 22730 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22731 | return NULL; |
22732 | ||
73b9be8b | 22733 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22734 | const char *attr_name = attr->as_string (); |
22735 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22736 | return NULL; |
22737 | ||
22738 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22739 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22740 | |
22741 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22742 | base = strrchr (attr_name, ':'); |
22743 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22744 | return ""; |
22745 | ||
5e22e966 | 22746 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22747 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22748 | attr_name, |
22749 | &base[-1] - attr_name); | |
96408a79 SA |
22750 | } |
22751 | ||
fdde2d81 | 22752 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22753 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22754 | |
0114d602 DJ |
22755 | For example, if we're within the method foo() in the following |
22756 | code: | |
22757 | ||
22758 | namespace N { | |
22759 | class C { | |
22760 | void foo () { | |
22761 | } | |
22762 | }; | |
22763 | } | |
22764 | ||
22765 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22766 | |
0d5cff50 | 22767 | static const char * |
e142c38c | 22768 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22769 | { |
976ca316 | 22770 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22771 | struct die_info *parent, *spec_die; |
22772 | struct dwarf2_cu *spec_cu; | |
22773 | struct type *parent_type; | |
a121b7c1 | 22774 | const char *retval; |
63d06c5c | 22775 | |
9c37b5ae | 22776 | if (cu->language != language_cplus |
c44af4eb TT |
22777 | && cu->language != language_fortran && cu->language != language_d |
22778 | && cu->language != language_rust) | |
0114d602 DJ |
22779 | return ""; |
22780 | ||
96408a79 SA |
22781 | retval = anonymous_struct_prefix (die, cu); |
22782 | if (retval) | |
22783 | return retval; | |
22784 | ||
0114d602 DJ |
22785 | /* We have to be careful in the presence of DW_AT_specification. |
22786 | For example, with GCC 3.4, given the code | |
22787 | ||
22788 | namespace N { | |
22789 | void foo() { | |
22790 | // Definition of N::foo. | |
22791 | } | |
22792 | } | |
22793 | ||
22794 | then we'll have a tree of DIEs like this: | |
22795 | ||
22796 | 1: DW_TAG_compile_unit | |
22797 | 2: DW_TAG_namespace // N | |
22798 | 3: DW_TAG_subprogram // declaration of N::foo | |
22799 | 4: DW_TAG_subprogram // definition of N::foo | |
22800 | DW_AT_specification // refers to die #3 | |
22801 | ||
22802 | Thus, when processing die #4, we have to pretend that we're in | |
22803 | the context of its DW_AT_specification, namely the contex of die | |
22804 | #3. */ | |
22805 | spec_cu = cu; | |
22806 | spec_die = die_specification (die, &spec_cu); | |
22807 | if (spec_die == NULL) | |
22808 | parent = die->parent; | |
22809 | else | |
63d06c5c | 22810 | { |
0114d602 DJ |
22811 | parent = spec_die->parent; |
22812 | cu = spec_cu; | |
63d06c5c | 22813 | } |
0114d602 DJ |
22814 | |
22815 | if (parent == NULL) | |
22816 | return ""; | |
98bfdba5 PA |
22817 | else if (parent->building_fullname) |
22818 | { | |
22819 | const char *name; | |
22820 | const char *parent_name; | |
22821 | ||
22822 | /* It has been seen on RealView 2.2 built binaries, | |
22823 | DW_TAG_template_type_param types actually _defined_ as | |
22824 | children of the parent class: | |
22825 | ||
22826 | enum E {}; | |
22827 | template class <class Enum> Class{}; | |
22828 | Class<enum E> class_e; | |
22829 | ||
dda83cd7 SM |
22830 | 1: DW_TAG_class_type (Class) |
22831 | 2: DW_TAG_enumeration_type (E) | |
22832 | 3: DW_TAG_enumerator (enum1:0) | |
22833 | 3: DW_TAG_enumerator (enum2:1) | |
22834 | ... | |
22835 | 2: DW_TAG_template_type_param | |
22836 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
22837 | |
22838 | Besides being broken debug info, it can put GDB into an | |
22839 | infinite loop. Consider: | |
22840 | ||
22841 | When we're building the full name for Class<E>, we'll start | |
22842 | at Class, and go look over its template type parameters, | |
22843 | finding E. We'll then try to build the full name of E, and | |
22844 | reach here. We're now trying to build the full name of E, | |
22845 | and look over the parent DIE for containing scope. In the | |
22846 | broken case, if we followed the parent DIE of E, we'd again | |
22847 | find Class, and once again go look at its template type | |
22848 | arguments, etc., etc. Simply don't consider such parent die | |
22849 | as source-level parent of this die (it can't be, the language | |
22850 | doesn't allow it), and break the loop here. */ | |
22851 | name = dwarf2_name (die, cu); | |
22852 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22853 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22854 | name ? name : "<unknown>", |
22855 | parent_name ? parent_name : "<unknown>"); | |
22856 | return ""; | |
22857 | } | |
63d06c5c | 22858 | else |
0114d602 DJ |
22859 | switch (parent->tag) |
22860 | { | |
63d06c5c | 22861 | case DW_TAG_namespace: |
0114d602 | 22862 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22863 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22864 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22865 | Work around this problem here. */ | |
22866 | if (cu->language == language_cplus | |
7d93a1e0 | 22867 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 22868 | return ""; |
0114d602 | 22869 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 22870 | return parent_type->name (); |
63d06c5c | 22871 | case DW_TAG_class_type: |
680b30c7 | 22872 | case DW_TAG_interface_type: |
63d06c5c | 22873 | case DW_TAG_structure_type: |
0114d602 | 22874 | case DW_TAG_union_type: |
f55ee35c | 22875 | case DW_TAG_module: |
0114d602 | 22876 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
22877 | if (parent_type->name () != NULL) |
22878 | return parent_type->name (); | |
0114d602 DJ |
22879 | else |
22880 | /* An anonymous structure is only allowed non-static data | |
22881 | members; no typedefs, no member functions, et cetera. | |
22882 | So it does not need a prefix. */ | |
22883 | return ""; | |
abc72ce4 | 22884 | case DW_TAG_compile_unit: |
95554aad | 22885 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22886 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22887 | if (cu->language == language_cplus | |
976ca316 | 22888 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
22889 | && die->child != NULL |
22890 | && (die->tag == DW_TAG_class_type | |
22891 | || die->tag == DW_TAG_structure_type | |
22892 | || die->tag == DW_TAG_union_type)) | |
22893 | { | |
43816ebc | 22894 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22895 | if (name != NULL) |
22896 | return name; | |
22897 | } | |
22898 | return ""; | |
0a4b0913 AB |
22899 | case DW_TAG_subprogram: |
22900 | /* Nested subroutines in Fortran get a prefix with the name | |
22901 | of the parent's subroutine. */ | |
22902 | if (cu->language == language_fortran) | |
22903 | { | |
22904 | if ((die->tag == DW_TAG_subprogram) | |
22905 | && (dwarf2_name (parent, cu) != NULL)) | |
22906 | return dwarf2_name (parent, cu); | |
22907 | } | |
22908 | return determine_prefix (parent, cu); | |
3d567982 TT |
22909 | case DW_TAG_enumeration_type: |
22910 | parent_type = read_type_die (parent, cu); | |
3bc440a2 | 22911 | if (parent_type->is_declared_class ()) |
3d567982 | 22912 | { |
7d93a1e0 SM |
22913 | if (parent_type->name () != NULL) |
22914 | return parent_type->name (); | |
3d567982 TT |
22915 | return ""; |
22916 | } | |
22917 | /* Fall through. */ | |
63d06c5c | 22918 | default: |
8176b9b8 | 22919 | return determine_prefix (parent, cu); |
63d06c5c | 22920 | } |
63d06c5c DC |
22921 | } |
22922 | ||
3e43a32a MS |
22923 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22924 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22925 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22926 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22927 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22928 | |
f55ee35c | 22929 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22930 | |
22931 | static char * | |
f55ee35c | 22932 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 22933 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 22934 | { |
f55ee35c | 22935 | const char *lead = ""; |
5c315b68 | 22936 | const char *sep; |
63d06c5c | 22937 | |
3e43a32a MS |
22938 | if (suffix == NULL || suffix[0] == '\0' |
22939 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22940 | sep = ""; |
45280282 IB |
22941 | else if (cu->language == language_d) |
22942 | { | |
22943 | /* For D, the 'main' function could be defined in any module, but it | |
22944 | should never be prefixed. */ | |
22945 | if (strcmp (suffix, "D main") == 0) | |
22946 | { | |
22947 | prefix = ""; | |
22948 | sep = ""; | |
22949 | } | |
22950 | else | |
22951 | sep = "."; | |
22952 | } | |
f55ee35c JK |
22953 | else if (cu->language == language_fortran && physname) |
22954 | { | |
22955 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22956 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22957 | ||
22958 | lead = "__"; | |
22959 | sep = "_MOD_"; | |
22960 | } | |
987504bb JJ |
22961 | else |
22962 | sep = "::"; | |
63d06c5c | 22963 | |
6dd47d34 DE |
22964 | if (prefix == NULL) |
22965 | prefix = ""; | |
22966 | if (suffix == NULL) | |
22967 | suffix = ""; | |
22968 | ||
987504bb JJ |
22969 | if (obs == NULL) |
22970 | { | |
3e43a32a | 22971 | char *retval |
224c3ddb SM |
22972 | = ((char *) |
22973 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22974 | |
f55ee35c JK |
22975 | strcpy (retval, lead); |
22976 | strcat (retval, prefix); | |
6dd47d34 DE |
22977 | strcat (retval, sep); |
22978 | strcat (retval, suffix); | |
63d06c5c DC |
22979 | return retval; |
22980 | } | |
987504bb JJ |
22981 | else |
22982 | { | |
22983 | /* We have an obstack. */ | |
f55ee35c | 22984 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22985 | } |
63d06c5c DC |
22986 | } |
22987 | ||
71c25dea TT |
22988 | /* Get name of a die, return NULL if not found. */ |
22989 | ||
15d034d0 TT |
22990 | static const char * |
22991 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 22992 | struct objfile *objfile) |
71c25dea TT |
22993 | { |
22994 | if (name && cu->language == language_cplus) | |
22995 | { | |
596dc4ad TT |
22996 | gdb::unique_xmalloc_ptr<char> canon_name |
22997 | = cp_canonicalize_string (name); | |
71c25dea | 22998 | |
596dc4ad TT |
22999 | if (canon_name != nullptr) |
23000 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23001 | } |
23002 | ||
23003 | return name; | |
c906108c SS |
23004 | } |
23005 | ||
96553a0c DE |
23006 | /* Get name of a die, return NULL if not found. |
23007 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23008 | |
15d034d0 | 23009 | static const char * |
e142c38c | 23010 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23011 | { |
23012 | struct attribute *attr; | |
5e22e966 | 23013 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23014 | |
e142c38c | 23015 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23016 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23017 | if (attr_name == nullptr | |
96553a0c | 23018 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23019 | && die->tag != DW_TAG_class_type |
23020 | && die->tag != DW_TAG_interface_type | |
23021 | && die->tag != DW_TAG_structure_type | |
23022 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23023 | return NULL; |
23024 | ||
23025 | switch (die->tag) | |
23026 | { | |
23027 | case DW_TAG_compile_unit: | |
95554aad | 23028 | case DW_TAG_partial_unit: |
71c25dea TT |
23029 | /* Compilation units have a DW_AT_name that is a filename, not |
23030 | a source language identifier. */ | |
23031 | case DW_TAG_enumeration_type: | |
23032 | case DW_TAG_enumerator: | |
23033 | /* These tags always have simple identifiers already; no need | |
23034 | to canonicalize them. */ | |
2c830f54 | 23035 | return attr_name; |
907af001 | 23036 | |
96553a0c | 23037 | case DW_TAG_namespace: |
2c830f54 TT |
23038 | if (attr_name != nullptr) |
23039 | return attr_name; | |
96553a0c DE |
23040 | return CP_ANONYMOUS_NAMESPACE_STR; |
23041 | ||
907af001 UW |
23042 | case DW_TAG_class_type: |
23043 | case DW_TAG_interface_type: | |
23044 | case DW_TAG_structure_type: | |
23045 | case DW_TAG_union_type: | |
23046 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23047 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23048 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23049 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23050 | if (attr_name != nullptr |
23051 | && (startswith (attr_name, "._") | |
23052 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23053 | return NULL; |
53832f31 TT |
23054 | |
23055 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23056 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23057 | if (!attr || attr_name == NULL) |
53832f31 | 23058 | { |
73b9be8b | 23059 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23060 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23061 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23062 | return NULL; |
23063 | ||
2c830f54 | 23064 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23065 | call for the same DIE. */ |
3b64bf15 | 23066 | if (!attr->canonical_string_p ()) |
53832f31 | 23067 | { |
43816ebc | 23068 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23069 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23070 | if (demangled == nullptr) |
23071 | return nullptr; | |
43816ebc | 23072 | |
c6481205 | 23073 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23074 | attr_name = attr->as_string (); |
53832f31 | 23075 | } |
67430cd0 | 23076 | |
2c830f54 TT |
23077 | /* Strip any leading namespaces/classes, keep only the |
23078 | base name. DW_AT_name for named DIEs does not | |
23079 | contain the prefixes. */ | |
23080 | const char *base = strrchr (attr_name, ':'); | |
23081 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23082 | return &base[1]; |
23083 | else | |
2c830f54 | 23084 | return attr_name; |
53832f31 | 23085 | } |
907af001 UW |
23086 | break; |
23087 | ||
71c25dea | 23088 | default: |
907af001 UW |
23089 | break; |
23090 | } | |
23091 | ||
3b64bf15 | 23092 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23093 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23094 | objfile)); | |
2c830f54 | 23095 | return attr->as_string (); |
9219021c DC |
23096 | } |
23097 | ||
23098 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23099 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23100 | containing the return value on output. */ | |
9219021c DC |
23101 | |
23102 | static struct die_info * | |
f2f0e013 | 23103 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23104 | { |
23105 | struct attribute *attr; | |
9219021c | 23106 | |
f2f0e013 | 23107 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23108 | if (attr == NULL) |
23109 | return NULL; | |
23110 | ||
f2f0e013 | 23111 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23112 | } |
23113 | ||
f9aca02d | 23114 | static void |
d97bc12b | 23115 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23116 | { |
23117 | unsigned int i; | |
23118 | ||
d97bc12b | 23119 | print_spaces (indent, f); |
9d8780f0 | 23120 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23121 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23122 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23123 | |
23124 | if (die->parent != NULL) | |
23125 | { | |
23126 | print_spaces (indent, f); | |
9d8780f0 SM |
23127 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23128 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23129 | } |
23130 | ||
23131 | print_spaces (indent, f); | |
23132 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23133 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23134 | |
d97bc12b DE |
23135 | print_spaces (indent, f); |
23136 | fprintf_unfiltered (f, " attributes:\n"); | |
23137 | ||
c906108c SS |
23138 | for (i = 0; i < die->num_attrs; ++i) |
23139 | { | |
d97bc12b DE |
23140 | print_spaces (indent, f); |
23141 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23142 | dwarf_attr_name (die->attrs[i].name), |
23143 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23144 | |
c906108c SS |
23145 | switch (die->attrs[i].form) |
23146 | { | |
c906108c | 23147 | case DW_FORM_addr: |
336d760d | 23148 | case DW_FORM_addrx: |
3019eac3 | 23149 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23150 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23151 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23152 | break; |
23153 | case DW_FORM_block2: | |
23154 | case DW_FORM_block4: | |
23155 | case DW_FORM_block: | |
23156 | case DW_FORM_block1: | |
56eb65bd | 23157 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23158 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23159 | break; |
2dc7f7b3 | 23160 | case DW_FORM_exprloc: |
56eb65bd | 23161 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23162 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23163 | break; |
0224619f JK |
23164 | case DW_FORM_data16: |
23165 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23166 | break; | |
4568ecf9 DE |
23167 | case DW_FORM_ref_addr: |
23168 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23169 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23170 | break; |
36586728 TT |
23171 | case DW_FORM_GNU_ref_alt: |
23172 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23173 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23174 | break; |
10b3939b DJ |
23175 | case DW_FORM_ref1: |
23176 | case DW_FORM_ref2: | |
23177 | case DW_FORM_ref4: | |
4568ecf9 DE |
23178 | case DW_FORM_ref8: |
23179 | case DW_FORM_ref_udata: | |
d97bc12b | 23180 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23181 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23182 | break; |
c906108c SS |
23183 | case DW_FORM_data1: |
23184 | case DW_FORM_data2: | |
23185 | case DW_FORM_data4: | |
ce5d95e1 | 23186 | case DW_FORM_data8: |
c906108c | 23187 | case DW_FORM_udata: |
43bbcdc2 | 23188 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23189 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23190 | break; |
2dc7f7b3 TT |
23191 | case DW_FORM_sec_offset: |
23192 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23193 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23194 | break; |
55f1336d | 23195 | case DW_FORM_ref_sig8: |
ac9ec31b | 23196 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23197 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23198 | break; |
c906108c | 23199 | case DW_FORM_string: |
4bdf3d34 | 23200 | case DW_FORM_strp: |
43988095 | 23201 | case DW_FORM_line_strp: |
cf532bd1 | 23202 | case DW_FORM_strx: |
3019eac3 | 23203 | case DW_FORM_GNU_str_index: |
36586728 | 23204 | case DW_FORM_GNU_strp_alt: |
8285870a | 23205 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23206 | die->attrs[i].as_string () |
23207 | ? die->attrs[i].as_string () : "", | |
23208 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23209 | break; |
23210 | case DW_FORM_flag: | |
c45bc3f8 | 23211 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23212 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23213 | else |
d97bc12b | 23214 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23215 | break; |
2dc7f7b3 TT |
23216 | case DW_FORM_flag_present: |
23217 | fprintf_unfiltered (f, "flag: TRUE"); | |
23218 | break; | |
a8329558 | 23219 | case DW_FORM_indirect: |
0963b4bd MS |
23220 | /* The reader will have reduced the indirect form to |
23221 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23222 | fprintf_unfiltered (f, |
3e43a32a | 23223 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23224 | break; |
1bc397c5 | 23225 | case DW_FORM_sdata: |
663c44ac JK |
23226 | case DW_FORM_implicit_const: |
23227 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23228 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23229 | break; |
c906108c | 23230 | default: |
d97bc12b | 23231 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23232 | die->attrs[i].form); |
d97bc12b | 23233 | break; |
c906108c | 23234 | } |
d97bc12b | 23235 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23236 | } |
23237 | } | |
23238 | ||
f9aca02d | 23239 | static void |
d97bc12b | 23240 | dump_die_for_error (struct die_info *die) |
c906108c | 23241 | { |
d97bc12b DE |
23242 | dump_die_shallow (gdb_stderr, 0, die); |
23243 | } | |
23244 | ||
23245 | static void | |
23246 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23247 | { | |
23248 | int indent = level * 4; | |
23249 | ||
23250 | gdb_assert (die != NULL); | |
23251 | ||
23252 | if (level >= max_level) | |
23253 | return; | |
23254 | ||
23255 | dump_die_shallow (f, indent, die); | |
23256 | ||
23257 | if (die->child != NULL) | |
c906108c | 23258 | { |
d97bc12b DE |
23259 | print_spaces (indent, f); |
23260 | fprintf_unfiltered (f, " Children:"); | |
23261 | if (level + 1 < max_level) | |
23262 | { | |
23263 | fprintf_unfiltered (f, "\n"); | |
23264 | dump_die_1 (f, level + 1, max_level, die->child); | |
23265 | } | |
23266 | else | |
23267 | { | |
3e43a32a MS |
23268 | fprintf_unfiltered (f, |
23269 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23270 | } |
23271 | } | |
23272 | ||
23273 | if (die->sibling != NULL && level > 0) | |
23274 | { | |
23275 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23276 | } |
23277 | } | |
23278 | ||
d97bc12b DE |
23279 | /* This is called from the pdie macro in gdbinit.in. |
23280 | It's not static so gcc will keep a copy callable from gdb. */ | |
23281 | ||
23282 | void | |
23283 | dump_die (struct die_info *die, int max_level) | |
23284 | { | |
23285 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23286 | } | |
23287 | ||
f9aca02d | 23288 | static void |
51545339 | 23289 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23290 | { |
51545339 | 23291 | void **slot; |
c906108c | 23292 | |
9c541725 PA |
23293 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23294 | to_underlying (die->sect_off), | |
b64f50a1 | 23295 | INSERT); |
51545339 DJ |
23296 | |
23297 | *slot = die; | |
c906108c SS |
23298 | } |
23299 | ||
348e048f DE |
23300 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23301 | On entry *REF_CU is the CU of SRC_DIE. | |
23302 | On exit *REF_CU is the CU of the result. */ | |
23303 | ||
23304 | static struct die_info * | |
ff39bb5e | 23305 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23306 | struct dwarf2_cu **ref_cu) |
23307 | { | |
23308 | struct die_info *die; | |
23309 | ||
cd6c91b4 | 23310 | if (attr->form_is_ref ()) |
348e048f | 23311 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23312 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23313 | die = follow_die_sig (src_die, attr, ref_cu); |
23314 | else | |
23315 | { | |
23316 | dump_die_for_error (src_die); | |
23317 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23318 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23319 | } |
23320 | ||
23321 | return die; | |
03dd20cc DJ |
23322 | } |
23323 | ||
5c631832 | 23324 | /* Follow reference OFFSET. |
673bfd45 DE |
23325 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23326 | On exit *REF_CU is the CU of the result. | |
23327 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23328 | |
f9aca02d | 23329 | static struct die_info * |
9c541725 | 23330 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23331 | struct dwarf2_cu **ref_cu) |
c906108c | 23332 | { |
10b3939b | 23333 | struct die_info temp_die; |
f2f0e013 | 23334 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23335 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23336 | |
348e048f DE |
23337 | gdb_assert (cu->per_cu != NULL); |
23338 | ||
98bfdba5 PA |
23339 | target_cu = cu; |
23340 | ||
17e593e9 SM |
23341 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23342 | "source CU contains target offset: %d", | |
23343 | sect_offset_str (cu->per_cu->sect_off), | |
23344 | sect_offset_str (sect_off), | |
23345 | cu->header.offset_in_cu_p (sect_off)); | |
23346 | ||
3019eac3 | 23347 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23348 | { |
23349 | /* .debug_types CUs cannot reference anything outside their CU. | |
23350 | If they need to, they have to reference a signatured type via | |
55f1336d | 23351 | DW_FORM_ref_sig8. */ |
4057dfde | 23352 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23353 | return NULL; |
348e048f | 23354 | } |
36586728 | 23355 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23356 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23357 | { |
23358 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23359 | |
9c541725 | 23360 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23361 | per_objfile); |
03dd20cc | 23362 | |
17e593e9 SM |
23363 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23364 | "target CU DIEs loaded: %d", | |
23365 | sect_offset_str (per_cu->sect_off), | |
23366 | per_objfile->get_cu (per_cu) != nullptr); | |
23367 | ||
616c069a SM |
23368 | /* If necessary, add it to the queue and load its DIEs. |
23369 | ||
23370 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23371 | it doesn't mean they are currently loaded. Since we require them | |
23372 | to be loaded, we must check for ourselves. */ | |
23373 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23374 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23375 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23376 | false, cu->language); | |
03dd20cc | 23377 | |
976ca316 | 23378 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23379 | gdb_assert (target_cu != nullptr); |
10b3939b | 23380 | } |
98bfdba5 PA |
23381 | else if (cu->dies == NULL) |
23382 | { | |
23383 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23384 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23385 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23386 | language_minimal); | |
98bfdba5 | 23387 | } |
c906108c | 23388 | |
f2f0e013 | 23389 | *ref_cu = target_cu; |
9c541725 | 23390 | temp_die.sect_off = sect_off; |
c24bdb02 | 23391 | |
3db19b2d TV |
23392 | if (target_cu != cu) |
23393 | target_cu->ancestor = cu; | |
23394 | ||
9a3c8263 | 23395 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23396 | &temp_die, |
23397 | to_underlying (sect_off)); | |
5c631832 | 23398 | } |
10b3939b | 23399 | |
5c631832 JK |
23400 | /* Follow reference attribute ATTR of SRC_DIE. |
23401 | On entry *REF_CU is the CU of SRC_DIE. | |
23402 | On exit *REF_CU is the CU of the result. */ | |
23403 | ||
23404 | static struct die_info * | |
ff39bb5e | 23405 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23406 | struct dwarf2_cu **ref_cu) |
23407 | { | |
0826b30a | 23408 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23409 | struct dwarf2_cu *cu = *ref_cu; |
23410 | struct die_info *die; | |
23411 | ||
9c541725 | 23412 | die = follow_die_offset (sect_off, |
36586728 TT |
23413 | (attr->form == DW_FORM_GNU_ref_alt |
23414 | || cu->per_cu->is_dwz), | |
23415 | ref_cu); | |
5c631832 | 23416 | if (!die) |
9d8780f0 SM |
23417 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23418 | "at %s [in module %s]"), | |
23419 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23420 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23421 | |
5c631832 JK |
23422 | return die; |
23423 | } | |
23424 | ||
d4c9a4f8 | 23425 | /* See read.h. */ |
5c631832 JK |
23426 | |
23427 | struct dwarf2_locexpr_baton | |
9c541725 | 23428 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23429 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23430 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23431 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23432 | bool resolve_abstract_p) | |
5c631832 | 23433 | { |
5c631832 JK |
23434 | struct die_info *die; |
23435 | struct attribute *attr; | |
23436 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23437 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23438 | |
976ca316 | 23439 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23440 | if (cu == nullptr) |
976ca316 | 23441 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23442 | |
23443 | if (cu == nullptr) | |
cc12ce38 DE |
23444 | { |
23445 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23446 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23447 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23448 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23449 | } |
918dd910 | 23450 | |
9c541725 | 23451 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23452 | if (!die) |
9d8780f0 SM |
23453 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23454 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23455 | |
23456 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23457 | if (!attr && resolve_abstract_p |
976ca316 SM |
23458 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23459 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23460 | { |
041d9819 | 23461 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23462 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23463 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23464 | |
3360b6e7 | 23465 | for (const auto &cand_off |
976ca316 | 23466 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23467 | { |
3360b6e7 TV |
23468 | struct dwarf2_cu *cand_cu = cu; |
23469 | struct die_info *cand | |
23470 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23471 | if (!cand | |
23472 | || !cand->parent | |
e4a62c65 TV |
23473 | || cand->parent->tag != DW_TAG_subprogram) |
23474 | continue; | |
23475 | ||
23476 | CORE_ADDR pc_low, pc_high; | |
23477 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23478 | if (pc_low == ((CORE_ADDR) -1)) |
23479 | continue; | |
23480 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23481 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23482 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23483 | continue; |
23484 | ||
23485 | die = cand; | |
23486 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23487 | break; | |
23488 | } | |
23489 | } | |
23490 | ||
5c631832 JK |
23491 | if (!attr) |
23492 | { | |
e103e986 JK |
23493 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23494 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23495 | |
e103e986 | 23496 | retval.data = NULL; |
5c631832 JK |
23497 | retval.size = 0; |
23498 | } | |
cd6c91b4 | 23499 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23500 | { |
23501 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23502 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23503 | size_t size; |
23504 | ||
23505 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23506 | ||
23507 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23508 | &size, pc); | |
23509 | retval.size = size; | |
23510 | } | |
5c631832 JK |
23511 | else |
23512 | { | |
4fc6c0d5 | 23513 | if (!attr->form_is_block ()) |
9d8780f0 | 23514 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23515 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23516 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23517 | |
9d2246fc TT |
23518 | struct dwarf_block *block = attr->as_block (); |
23519 | retval.data = block->data; | |
23520 | retval.size = block->size; | |
5c631832 | 23521 | } |
976ca316 | 23522 | retval.per_objfile = per_objfile; |
5c631832 | 23523 | retval.per_cu = cu->per_cu; |
918dd910 | 23524 | |
976ca316 | 23525 | per_objfile->age_comp_units (); |
918dd910 | 23526 | |
5c631832 | 23527 | return retval; |
348e048f DE |
23528 | } |
23529 | ||
d4c9a4f8 | 23530 | /* See read.h. */ |
8b9737bf TT |
23531 | |
23532 | struct dwarf2_locexpr_baton | |
23533 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23534 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23535 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23536 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23537 | { |
9c541725 | 23538 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23539 | |
14095eb3 | 23540 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23541 | get_frame_pc); |
8b9737bf TT |
23542 | } |
23543 | ||
b6807d98 TT |
23544 | /* Write a constant of a given type as target-ordered bytes into |
23545 | OBSTACK. */ | |
23546 | ||
23547 | static const gdb_byte * | |
23548 | write_constant_as_bytes (struct obstack *obstack, | |
23549 | enum bfd_endian byte_order, | |
23550 | struct type *type, | |
23551 | ULONGEST value, | |
23552 | LONGEST *len) | |
23553 | { | |
23554 | gdb_byte *result; | |
23555 | ||
23556 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23557 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23558 | store_unsigned_integer (result, *len, byte_order, value); |
23559 | ||
23560 | return result; | |
23561 | } | |
23562 | ||
d4c9a4f8 | 23563 | /* See read.h. */ |
b6807d98 TT |
23564 | |
23565 | const gdb_byte * | |
9c541725 | 23566 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23567 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23568 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23569 | obstack *obstack, |
b6807d98 TT |
23570 | LONGEST *len) |
23571 | { | |
b6807d98 TT |
23572 | struct die_info *die; |
23573 | struct attribute *attr; | |
23574 | const gdb_byte *result = NULL; | |
23575 | struct type *type; | |
23576 | LONGEST value; | |
23577 | enum bfd_endian byte_order; | |
14095eb3 | 23578 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23579 | |
7188ed02 | 23580 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23581 | if (cu == nullptr) |
23582 | cu = load_cu (per_cu, per_objfile, false); | |
23583 | ||
23584 | if (cu == nullptr) | |
cc12ce38 DE |
23585 | { |
23586 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23587 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23588 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23589 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23590 | } |
b6807d98 | 23591 | |
9c541725 | 23592 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23593 | if (!die) |
9d8780f0 SM |
23594 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23595 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23596 | |
23597 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23598 | if (attr == NULL) | |
23599 | return NULL; | |
23600 | ||
e3b94546 | 23601 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23602 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23603 | ||
23604 | switch (attr->form) | |
23605 | { | |
23606 | case DW_FORM_addr: | |
336d760d | 23607 | case DW_FORM_addrx: |
b6807d98 TT |
23608 | case DW_FORM_GNU_addr_index: |
23609 | { | |
23610 | gdb_byte *tem; | |
23611 | ||
23612 | *len = cu->header.addr_size; | |
224c3ddb | 23613 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23614 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23615 | result = tem; |
23616 | } | |
23617 | break; | |
23618 | case DW_FORM_string: | |
23619 | case DW_FORM_strp: | |
cf532bd1 | 23620 | case DW_FORM_strx: |
b6807d98 TT |
23621 | case DW_FORM_GNU_str_index: |
23622 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23623 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23624 | directly to it. */ |
2c830f54 TT |
23625 | { |
23626 | const char *attr_name = attr->as_string (); | |
23627 | result = (const gdb_byte *) attr_name; | |
23628 | *len = strlen (attr_name); | |
23629 | } | |
b6807d98 TT |
23630 | break; |
23631 | case DW_FORM_block1: | |
23632 | case DW_FORM_block2: | |
23633 | case DW_FORM_block4: | |
23634 | case DW_FORM_block: | |
23635 | case DW_FORM_exprloc: | |
0224619f | 23636 | case DW_FORM_data16: |
9d2246fc TT |
23637 | { |
23638 | struct dwarf_block *block = attr->as_block (); | |
23639 | result = block->data; | |
23640 | *len = block->size; | |
23641 | } | |
b6807d98 TT |
23642 | break; |
23643 | ||
23644 | /* The DW_AT_const_value attributes are supposed to carry the | |
23645 | symbol's value "represented as it would be on the target | |
23646 | architecture." By the time we get here, it's already been | |
23647 | converted to host endianness, so we just need to sign- or | |
23648 | zero-extend it as appropriate. */ | |
23649 | case DW_FORM_data1: | |
23650 | type = die_type (die, cu); | |
23651 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23652 | if (result == NULL) | |
23653 | result = write_constant_as_bytes (obstack, byte_order, | |
23654 | type, value, len); | |
23655 | break; | |
23656 | case DW_FORM_data2: | |
23657 | type = die_type (die, cu); | |
23658 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23659 | if (result == NULL) | |
23660 | result = write_constant_as_bytes (obstack, byte_order, | |
23661 | type, value, len); | |
23662 | break; | |
23663 | case DW_FORM_data4: | |
23664 | type = die_type (die, cu); | |
23665 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23666 | if (result == NULL) | |
23667 | result = write_constant_as_bytes (obstack, byte_order, | |
23668 | type, value, len); | |
23669 | break; | |
23670 | case DW_FORM_data8: | |
23671 | type = die_type (die, cu); | |
23672 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23673 | if (result == NULL) | |
23674 | result = write_constant_as_bytes (obstack, byte_order, | |
23675 | type, value, len); | |
23676 | break; | |
23677 | ||
23678 | case DW_FORM_sdata: | |
663c44ac | 23679 | case DW_FORM_implicit_const: |
b6807d98 TT |
23680 | type = die_type (die, cu); |
23681 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23682 | type, attr->as_signed (), len); |
b6807d98 TT |
23683 | break; |
23684 | ||
23685 | case DW_FORM_udata: | |
23686 | type = die_type (die, cu); | |
23687 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23688 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23689 | break; |
23690 | ||
23691 | default: | |
b98664d3 | 23692 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23693 | dwarf_form_name (attr->form)); |
23694 | break; | |
23695 | } | |
23696 | ||
23697 | return result; | |
23698 | } | |
23699 | ||
d4c9a4f8 | 23700 | /* See read.h. */ |
7942e96e AA |
23701 | |
23702 | struct type * | |
9c541725 | 23703 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23704 | dwarf2_per_cu_data *per_cu, |
23705 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23706 | { |
7942e96e AA |
23707 | struct die_info *die; |
23708 | ||
7188ed02 | 23709 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23710 | if (cu == nullptr) |
23711 | cu = load_cu (per_cu, per_objfile, false); | |
23712 | ||
23713 | if (cu == nullptr) | |
23714 | return nullptr; | |
7942e96e | 23715 | |
9c541725 | 23716 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23717 | if (!die) |
23718 | return NULL; | |
23719 | ||
23720 | return die_type (die, cu); | |
23721 | } | |
23722 | ||
8cb5117c | 23723 | /* See read.h. */ |
8a9b8146 TT |
23724 | |
23725 | struct type * | |
b64f50a1 | 23726 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23727 | dwarf2_per_cu_data *per_cu, |
23728 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23729 | { |
9c541725 | 23730 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23731 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23732 | } |
23733 | ||
ac9ec31b | 23734 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23735 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23736 | On exit *REF_CU is the CU of the result. |
23737 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23738 | |
23739 | static struct die_info * | |
ac9ec31b DE |
23740 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23741 | struct dwarf2_cu **ref_cu) | |
348e048f | 23742 | { |
348e048f | 23743 | struct die_info temp_die; |
3db19b2d | 23744 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23745 | struct die_info *die; |
976ca316 | 23746 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23747 | |
348e048f | 23748 | |
ac9ec31b DE |
23749 | /* While it might be nice to assert sig_type->type == NULL here, |
23750 | we can get here for DW_AT_imported_declaration where we need | |
23751 | the DIE not the type. */ | |
348e048f | 23752 | |
616c069a | 23753 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 23754 | |
616c069a SM |
23755 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
23756 | it doesn't mean they are currently loaded. Since we require them | |
23757 | to be loaded, we must check for ourselves. */ | |
0d305d5c | 23758 | if (maybe_queue_comp_unit (*ref_cu, sig_type, per_objfile, |
616c069a | 23759 | language_minimal) |
0d305d5c | 23760 | || per_objfile->get_cu (sig_type) == nullptr) |
976ca316 | 23761 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23762 | |
0d305d5c | 23763 | sig_cu = per_objfile->get_cu (sig_type); |
69d751e3 | 23764 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23765 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23766 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23767 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23768 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23769 | if (die) |
23770 | { | |
796a7ff8 DE |
23771 | /* For .gdb_index version 7 keep track of included TUs. |
23772 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23773 | if (per_objfile->per_bfd->index_table != NULL |
23774 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23775 | { |
ae640021 | 23776 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23777 | } |
23778 | ||
348e048f | 23779 | *ref_cu = sig_cu; |
3db19b2d TV |
23780 | if (sig_cu != cu) |
23781 | sig_cu->ancestor = cu; | |
c24bdb02 | 23782 | |
348e048f DE |
23783 | return die; |
23784 | } | |
23785 | ||
ac9ec31b DE |
23786 | return NULL; |
23787 | } | |
23788 | ||
23789 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23790 | On entry *REF_CU is the CU of SRC_DIE. | |
23791 | On exit *REF_CU is the CU of the result. | |
23792 | The result is the DIE of the type. | |
23793 | If the referenced type cannot be found an error is thrown. */ | |
23794 | ||
23795 | static struct die_info * | |
ff39bb5e | 23796 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23797 | struct dwarf2_cu **ref_cu) |
23798 | { | |
630ed6b9 | 23799 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23800 | struct signatured_type *sig_type; |
23801 | struct die_info *die; | |
23802 | ||
23803 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23804 | ||
a2ce51a0 | 23805 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23806 | /* sig_type will be NULL if the signatured type is missing from |
23807 | the debug info. */ | |
23808 | if (sig_type == NULL) | |
23809 | { | |
23810 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
23811 | " from DIE at %s [in module %s]"), |
23812 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23813 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23814 | } |
23815 | ||
23816 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23817 | if (die == NULL) | |
23818 | { | |
23819 | dump_die_for_error (src_die); | |
23820 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23821 | " from DIE at %s [in module %s]"), |
23822 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23823 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23824 | } |
23825 | ||
23826 | return die; | |
23827 | } | |
23828 | ||
23829 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23830 | reading in and processing the type unit if necessary. */ | |
23831 | ||
23832 | static struct type * | |
23833 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23834 | struct dwarf2_cu *cu) | |
23835 | { | |
976ca316 | 23836 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23837 | struct signatured_type *sig_type; |
23838 | struct dwarf2_cu *type_cu; | |
23839 | struct die_info *type_die; | |
23840 | struct type *type; | |
23841 | ||
a2ce51a0 | 23842 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23843 | /* sig_type will be NULL if the signatured type is missing from |
23844 | the debug info. */ | |
23845 | if (sig_type == NULL) | |
23846 | { | |
b98664d3 | 23847 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23848 | " from DIE at %s [in module %s]"), |
23849 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23850 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23851 | return build_error_marker_type (cu, die); |
23852 | } | |
23853 | ||
23854 | /* If we already know the type we're done. */ | |
976ca316 | 23855 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23856 | if (type != nullptr) |
23857 | return type; | |
ac9ec31b DE |
23858 | |
23859 | type_cu = cu; | |
23860 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23861 | if (type_die != NULL) | |
23862 | { | |
23863 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23864 | is created. This is important, for example, because for c++ classes | |
23865 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23866 | type = read_type_die (type_die, type_cu); | |
23867 | if (type == NULL) | |
23868 | { | |
b98664d3 | 23869 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23870 | " referenced from DIE at %s [in module %s]"), |
23871 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23872 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23873 | type = build_error_marker_type (cu, die); |
23874 | } | |
23875 | } | |
23876 | else | |
23877 | { | |
b98664d3 | 23878 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23879 | " from DIE at %s [in module %s]"), |
23880 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23881 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23882 | type = build_error_marker_type (cu, die); |
23883 | } | |
e286671b | 23884 | |
976ca316 | 23885 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
23886 | |
23887 | return type; | |
23888 | } | |
23889 | ||
23890 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23891 | reading in and processing the type unit if necessary. */ | |
23892 | ||
23893 | static struct type * | |
ff39bb5e | 23894 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23895 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23896 | { |
23897 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23898 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23899 | { |
23900 | struct dwarf2_cu *type_cu = cu; | |
23901 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23902 | ||
23903 | return read_type_die (type_die, type_cu); | |
23904 | } | |
23905 | else if (attr->form == DW_FORM_ref_sig8) | |
23906 | { | |
630ed6b9 | 23907 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
23908 | } |
23909 | else | |
23910 | { | |
976ca316 | 23911 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23912 | |
b98664d3 | 23913 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23914 | " at %s [in module %s]"), |
23915 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 23916 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23917 | return build_error_marker_type (cu, die); |
23918 | } | |
348e048f DE |
23919 | } |
23920 | ||
e5fe5e75 | 23921 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23922 | |
23923 | static void | |
ab432490 SM |
23924 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
23925 | dwarf2_per_objfile *per_objfile) | |
348e048f | 23926 | { |
52dc124a | 23927 | struct signatured_type *sig_type; |
348e048f | 23928 | |
f4dc4d17 | 23929 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 23930 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 23931 | |
6721b2ec DE |
23932 | /* We have the per_cu, but we need the signatured_type. |
23933 | Fortunately this is an easy translation. */ | |
23934 | gdb_assert (per_cu->is_debug_types); | |
23935 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23936 | |
7188ed02 | 23937 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23938 | |
ab432490 | 23939 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23940 | |
7188ed02 | 23941 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
23942 | } |
23943 | ||
3019eac3 DE |
23944 | /* Read in a signatured type and build its CU and DIEs. |
23945 | If the type is a stub for the real type in a DWO file, | |
23946 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23947 | |
23948 | static void | |
ab432490 SM |
23949 | read_signatured_type (signatured_type *sig_type, |
23950 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 23951 | { |
0d305d5c TT |
23952 | gdb_assert (sig_type->is_debug_types); |
23953 | gdb_assert (per_objfile->get_cu (sig_type) == nullptr); | |
348e048f | 23954 | |
0d305d5c | 23955 | cutu_reader reader (sig_type, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
23956 | |
23957 | if (!reader.dummy_p) | |
23958 | { | |
23959 | struct dwarf2_cu *cu = reader.cu; | |
23960 | const gdb_byte *info_ptr = reader.info_ptr; | |
23961 | ||
23962 | gdb_assert (cu->die_hash == NULL); | |
23963 | cu->die_hash = | |
23964 | htab_create_alloc_ex (cu->header.length / 12, | |
23965 | die_hash, | |
23966 | die_eq, | |
23967 | NULL, | |
23968 | &cu->comp_unit_obstack, | |
23969 | hashtab_obstack_allocate, | |
23970 | dummy_obstack_deallocate); | |
23971 | ||
3e225074 | 23972 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
23973 | reader.comp_unit_die->child |
23974 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23975 | reader.comp_unit_die); | |
23976 | cu->dies = reader.comp_unit_die; | |
23977 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23978 | ||
23979 | /* We try not to read any attributes in this function, because | |
23980 | not all CUs needed for references have been loaded yet, and | |
23981 | symbol table processing isn't initialized. But we have to | |
23982 | set the CU language, or we won't be able to build types | |
23983 | correctly. Similarly, if we do not read the producer, we can | |
23984 | not apply producer-specific interpretation. */ | |
23985 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
23986 | |
23987 | reader.keep (); | |
c0ab21c2 TT |
23988 | } |
23989 | ||
0d305d5c | 23990 | sig_type->tu_read = 1; |
c906108c SS |
23991 | } |
23992 | ||
c906108c SS |
23993 | /* Decode simple location descriptions. |
23994 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
23995 | the location and return the value. If COMPUTED is non-null, it is |
23996 | set to true to indicate that decoding was successful, and false | |
23997 | otherwise. If COMPUTED is null, then this function may emit a | |
23998 | complaint. */ | |
c906108c SS |
23999 | |
24000 | static CORE_ADDR | |
7d79de9a | 24001 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24002 | { |
5e22e966 | 24003 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24004 | size_t i; |
24005 | size_t size = blk->size; | |
d521ce57 | 24006 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24007 | CORE_ADDR stack[64]; |
24008 | int stacki; | |
24009 | unsigned int bytes_read, unsnd; | |
24010 | gdb_byte op; | |
c906108c | 24011 | |
7d79de9a TT |
24012 | if (computed != nullptr) |
24013 | *computed = false; | |
24014 | ||
21ae7a4d JK |
24015 | i = 0; |
24016 | stacki = 0; | |
24017 | stack[stacki] = 0; | |
24018 | stack[++stacki] = 0; | |
24019 | ||
24020 | while (i < size) | |
24021 | { | |
24022 | op = data[i++]; | |
24023 | switch (op) | |
24024 | { | |
24025 | case DW_OP_lit0: | |
24026 | case DW_OP_lit1: | |
24027 | case DW_OP_lit2: | |
24028 | case DW_OP_lit3: | |
24029 | case DW_OP_lit4: | |
24030 | case DW_OP_lit5: | |
24031 | case DW_OP_lit6: | |
24032 | case DW_OP_lit7: | |
24033 | case DW_OP_lit8: | |
24034 | case DW_OP_lit9: | |
24035 | case DW_OP_lit10: | |
24036 | case DW_OP_lit11: | |
24037 | case DW_OP_lit12: | |
24038 | case DW_OP_lit13: | |
24039 | case DW_OP_lit14: | |
24040 | case DW_OP_lit15: | |
24041 | case DW_OP_lit16: | |
24042 | case DW_OP_lit17: | |
24043 | case DW_OP_lit18: | |
24044 | case DW_OP_lit19: | |
24045 | case DW_OP_lit20: | |
24046 | case DW_OP_lit21: | |
24047 | case DW_OP_lit22: | |
24048 | case DW_OP_lit23: | |
24049 | case DW_OP_lit24: | |
24050 | case DW_OP_lit25: | |
24051 | case DW_OP_lit26: | |
24052 | case DW_OP_lit27: | |
24053 | case DW_OP_lit28: | |
24054 | case DW_OP_lit29: | |
24055 | case DW_OP_lit30: | |
24056 | case DW_OP_lit31: | |
24057 | stack[++stacki] = op - DW_OP_lit0; | |
24058 | break; | |
f1bea926 | 24059 | |
21ae7a4d JK |
24060 | case DW_OP_reg0: |
24061 | case DW_OP_reg1: | |
24062 | case DW_OP_reg2: | |
24063 | case DW_OP_reg3: | |
24064 | case DW_OP_reg4: | |
24065 | case DW_OP_reg5: | |
24066 | case DW_OP_reg6: | |
24067 | case DW_OP_reg7: | |
24068 | case DW_OP_reg8: | |
24069 | case DW_OP_reg9: | |
24070 | case DW_OP_reg10: | |
24071 | case DW_OP_reg11: | |
24072 | case DW_OP_reg12: | |
24073 | case DW_OP_reg13: | |
24074 | case DW_OP_reg14: | |
24075 | case DW_OP_reg15: | |
24076 | case DW_OP_reg16: | |
24077 | case DW_OP_reg17: | |
24078 | case DW_OP_reg18: | |
24079 | case DW_OP_reg19: | |
24080 | case DW_OP_reg20: | |
24081 | case DW_OP_reg21: | |
24082 | case DW_OP_reg22: | |
24083 | case DW_OP_reg23: | |
24084 | case DW_OP_reg24: | |
24085 | case DW_OP_reg25: | |
24086 | case DW_OP_reg26: | |
24087 | case DW_OP_reg27: | |
24088 | case DW_OP_reg28: | |
24089 | case DW_OP_reg29: | |
24090 | case DW_OP_reg30: | |
24091 | case DW_OP_reg31: | |
24092 | stack[++stacki] = op - DW_OP_reg0; | |
24093 | if (i < size) | |
7d79de9a TT |
24094 | { |
24095 | if (computed == nullptr) | |
24096 | dwarf2_complex_location_expr_complaint (); | |
24097 | else | |
24098 | return 0; | |
24099 | } | |
21ae7a4d | 24100 | break; |
c906108c | 24101 | |
21ae7a4d JK |
24102 | case DW_OP_regx: |
24103 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24104 | i += bytes_read; | |
24105 | stack[++stacki] = unsnd; | |
24106 | if (i < size) | |
7d79de9a TT |
24107 | { |
24108 | if (computed == nullptr) | |
24109 | dwarf2_complex_location_expr_complaint (); | |
24110 | else | |
24111 | return 0; | |
24112 | } | |
21ae7a4d | 24113 | break; |
c906108c | 24114 | |
21ae7a4d | 24115 | case DW_OP_addr: |
c8a7a66f TT |
24116 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24117 | &bytes_read); | |
21ae7a4d JK |
24118 | i += bytes_read; |
24119 | break; | |
d53d4ac5 | 24120 | |
21ae7a4d JK |
24121 | case DW_OP_const1u: |
24122 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24123 | i += 1; | |
24124 | break; | |
24125 | ||
24126 | case DW_OP_const1s: | |
24127 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24128 | i += 1; | |
24129 | break; | |
24130 | ||
24131 | case DW_OP_const2u: | |
24132 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24133 | i += 2; | |
24134 | break; | |
24135 | ||
24136 | case DW_OP_const2s: | |
24137 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24138 | i += 2; | |
24139 | break; | |
d53d4ac5 | 24140 | |
21ae7a4d JK |
24141 | case DW_OP_const4u: |
24142 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24143 | i += 4; | |
24144 | break; | |
24145 | ||
24146 | case DW_OP_const4s: | |
24147 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24148 | i += 4; | |
24149 | break; | |
24150 | ||
585861ea JK |
24151 | case DW_OP_const8u: |
24152 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24153 | i += 8; | |
24154 | break; | |
24155 | ||
21ae7a4d JK |
24156 | case DW_OP_constu: |
24157 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24158 | &bytes_read); | |
24159 | i += bytes_read; | |
24160 | break; | |
24161 | ||
24162 | case DW_OP_consts: | |
24163 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24164 | i += bytes_read; | |
24165 | break; | |
24166 | ||
24167 | case DW_OP_dup: | |
24168 | stack[stacki + 1] = stack[stacki]; | |
24169 | stacki++; | |
24170 | break; | |
24171 | ||
24172 | case DW_OP_plus: | |
24173 | stack[stacki - 1] += stack[stacki]; | |
24174 | stacki--; | |
24175 | break; | |
24176 | ||
24177 | case DW_OP_plus_uconst: | |
24178 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24179 | &bytes_read); | |
24180 | i += bytes_read; | |
24181 | break; | |
24182 | ||
24183 | case DW_OP_minus: | |
24184 | stack[stacki - 1] -= stack[stacki]; | |
24185 | stacki--; | |
24186 | break; | |
24187 | ||
24188 | case DW_OP_deref: | |
24189 | /* If we're not the last op, then we definitely can't encode | |
24190 | this using GDB's address_class enum. This is valid for partial | |
24191 | global symbols, although the variable's address will be bogus | |
24192 | in the psymtab. */ | |
24193 | if (i < size) | |
7d79de9a TT |
24194 | { |
24195 | if (computed == nullptr) | |
24196 | dwarf2_complex_location_expr_complaint (); | |
24197 | else | |
24198 | return 0; | |
24199 | } | |
21ae7a4d JK |
24200 | break; |
24201 | ||
dda83cd7 | 24202 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24203 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24204 | /* The top of the stack has the offset from the beginning |
24205 | of the thread control block at which the variable is located. */ | |
24206 | /* Nothing should follow this operator, so the top of stack would | |
24207 | be returned. */ | |
24208 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24209 | address will be bogus in the psymtab. Make it always at least |
24210 | non-zero to not look as a variable garbage collected by linker | |
24211 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24212 | if (i < size) |
7d79de9a TT |
24213 | { |
24214 | if (computed == nullptr) | |
24215 | dwarf2_complex_location_expr_complaint (); | |
24216 | else | |
24217 | return 0; | |
24218 | } | |
585861ea | 24219 | stack[stacki]++; |
dda83cd7 | 24220 | break; |
21ae7a4d JK |
24221 | |
24222 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24223 | if (computed != nullptr) |
24224 | return 0; | |
21ae7a4d JK |
24225 | break; |
24226 | ||
336d760d | 24227 | case DW_OP_addrx: |
3019eac3 | 24228 | case DW_OP_GNU_addr_index: |
49f6c839 | 24229 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24230 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24231 | &bytes_read); | |
24232 | i += bytes_read; | |
24233 | break; | |
24234 | ||
21ae7a4d | 24235 | default: |
7d79de9a TT |
24236 | if (computed == nullptr) |
24237 | { | |
24238 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24239 | |
7d79de9a TT |
24240 | if (name) |
24241 | complaint (_("unsupported stack op: '%s'"), | |
24242 | name); | |
24243 | else | |
24244 | complaint (_("unsupported stack op: '%02x'"), | |
24245 | op); | |
24246 | } | |
21ae7a4d JK |
24247 | |
24248 | return (stack[stacki]); | |
d53d4ac5 | 24249 | } |
3c6e0cb3 | 24250 | |
21ae7a4d | 24251 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24252 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24253 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24254 | { | |
7d79de9a TT |
24255 | if (computed == nullptr) |
24256 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24257 | return 0; |
24258 | } | |
24259 | ||
24260 | if (stacki <= 0) | |
24261 | { | |
7d79de9a TT |
24262 | if (computed == nullptr) |
24263 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24264 | return 0; |
24265 | } | |
24266 | } | |
7d79de9a TT |
24267 | |
24268 | if (computed != nullptr) | |
24269 | *computed = true; | |
21ae7a4d | 24270 | return (stack[stacki]); |
c906108c SS |
24271 | } |
24272 | ||
24273 | /* memory allocation interface */ | |
24274 | ||
c906108c | 24275 | static struct dwarf_block * |
7b5a2f43 | 24276 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24277 | { |
8d749320 | 24278 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24279 | } |
24280 | ||
c906108c | 24281 | static struct die_info * |
b60c80d6 | 24282 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24283 | { |
24284 | struct die_info *die; | |
b60c80d6 DJ |
24285 | size_t size = sizeof (struct die_info); |
24286 | ||
24287 | if (num_attrs > 1) | |
24288 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24289 | |
b60c80d6 | 24290 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24291 | memset (die, 0, sizeof (struct die_info)); |
24292 | return (die); | |
24293 | } | |
2e276125 JB |
24294 | |
24295 | \f | |
a036ba48 | 24296 | |
c90ec28a | 24297 | /* Macro support. */ |
cf2c3c16 | 24298 | |
9eac9650 TT |
24299 | /* An overload of dwarf_decode_macros that finds the correct section |
24300 | and ensures it is read in before calling the other overload. */ | |
24301 | ||
24302 | static void | |
24303 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24304 | int section_is_gnu) | |
24305 | { | |
976ca316 SM |
24306 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24307 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24308 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24309 | unsigned int offset_size = cu->header.offset_size; |
24310 | struct dwarf2_section_info *section; | |
24311 | const char *section_name; | |
24312 | ||
24313 | if (cu->dwo_unit != nullptr) | |
24314 | { | |
24315 | if (section_is_gnu) | |
24316 | { | |
24317 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24318 | section_name = ".debug_macro.dwo"; | |
24319 | } | |
24320 | else | |
24321 | { | |
24322 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24323 | section_name = ".debug_macinfo.dwo"; | |
24324 | } | |
24325 | } | |
24326 | else | |
24327 | { | |
24328 | if (section_is_gnu) | |
24329 | { | |
976ca316 | 24330 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24331 | section_name = ".debug_macro"; |
24332 | } | |
24333 | else | |
24334 | { | |
976ca316 | 24335 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24336 | section_name = ".debug_macinfo"; |
24337 | } | |
24338 | } | |
24339 | ||
24340 | section->read (objfile); | |
24341 | if (section->buffer == nullptr) | |
24342 | { | |
24343 | complaint (_("missing %s section"), section_name); | |
24344 | return; | |
24345 | } | |
24346 | ||
24347 | buildsym_compunit *builder = cu->get_builder (); | |
24348 | ||
048fde1e | 24349 | struct dwarf2_section_info *str_offsets_section; |
24350 | struct dwarf2_section_info *str_section; | |
24351 | ULONGEST str_offsets_base; | |
24352 | ||
24353 | if (cu->dwo_unit != nullptr) | |
24354 | { | |
24355 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24356 | ->sections.str_offsets; | |
24357 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24358 | str_offsets_base = cu->header.addr_size; | |
24359 | } | |
24360 | else | |
24361 | { | |
24362 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24363 | str_section = &per_objfile->per_bfd->str; | |
24364 | str_offsets_base = *cu->str_offsets_base; | |
24365 | } | |
24366 | ||
976ca316 | 24367 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24368 | offset_size, offset, str_section, str_offsets_section, |
24369 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24370 | } |
24371 | ||
3019eac3 DE |
24372 | /* Return the .debug_loc section to use for CU. |
24373 | For DWO files use .debug_loc.dwo. */ | |
24374 | ||
24375 | static struct dwarf2_section_info * | |
24376 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24377 | { | |
976ca316 | 24378 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24379 | |
3019eac3 | 24380 | if (cu->dwo_unit) |
43988095 JK |
24381 | { |
24382 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24383 | |
43988095 JK |
24384 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24385 | } | |
976ca316 SM |
24386 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24387 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24388 | } |
24389 | ||
d0ce17d8 CT |
24390 | /* Return the .debug_rnglists section to use for CU. */ |
24391 | static struct dwarf2_section_info * | |
24392 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24393 | { | |
24394 | if (cu->header.version < 5) | |
24395 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24396 | cu->header.version); | |
24397 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24398 | ||
24399 | /* Make sure we read the .debug_rnglists section from the file that | |
24400 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24401 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24402 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24403 | program. */ | |
24404 | if (cu->dwo_unit != nullptr | |
24405 | && tag != DW_TAG_compile_unit | |
24406 | && tag != DW_TAG_skeleton_unit) | |
24407 | { | |
24408 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24409 | ||
24410 | if (sections->rnglists.size > 0) | |
24411 | return §ions->rnglists; | |
24412 | else | |
24413 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24414 | } | |
24415 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24416 | } | |
24417 | ||
8cf6f0b1 TT |
24418 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24419 | ||
24420 | static void | |
24421 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24422 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24423 | const struct attribute *attr) |
8cf6f0b1 | 24424 | { |
976ca316 | 24425 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24426 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24427 | ||
976ca316 | 24428 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24429 | |
976ca316 | 24430 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24431 | baton->per_cu = cu->per_cu; |
24432 | gdb_assert (baton->per_cu); | |
24433 | /* We don't know how long the location list is, but make sure we | |
24434 | don't run off the edge of the section. */ | |
d4df075e TT |
24435 | baton->size = section->size - attr->as_unsigned (); |
24436 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24437 | if (cu->base_address.has_value ()) |
24438 | baton->base_address = *cu->base_address; | |
24439 | else | |
24440 | baton->base_address = 0; | |
f664829e | 24441 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24442 | } |
24443 | ||
4c2df51b | 24444 | static void |
ff39bb5e | 24445 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24446 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24447 | { |
976ca316 SM |
24448 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24449 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24450 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24451 | |
cd6c91b4 | 24452 | if (attr->form_is_section_offset () |
3019eac3 | 24453 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24454 | the section. If so, fall through to the complaint in the |
24455 | other branch. */ | |
d4df075e | 24456 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24457 | { |
0d53c4c4 | 24458 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24459 | |
8d749320 | 24460 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24461 | |
8cf6f0b1 | 24462 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24463 | |
2b24b6e4 | 24464 | if (!cu->base_address.has_value ()) |
b98664d3 | 24465 | complaint (_("Location list used without " |
3e43a32a | 24466 | "specifying the CU base address.")); |
4c2df51b | 24467 | |
f1e6e072 TT |
24468 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24469 | ? dwarf2_loclist_block_index | |
24470 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24471 | SYMBOL_LOCATION_BATON (sym) = baton; |
24472 | } | |
24473 | else | |
24474 | { | |
24475 | struct dwarf2_locexpr_baton *baton; | |
24476 | ||
8d749320 | 24477 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24478 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24479 | baton->per_cu = cu->per_cu; |
24480 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24481 | |
4fc6c0d5 | 24482 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24483 | { |
24484 | /* Note that we're just copying the block's data pointer | |
24485 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24486 | info_buffer for SYM's objfile; right now we never release |
24487 | that buffer, but when we do clean up properly this may | |
24488 | need to change. */ | |
9d2246fc TT |
24489 | struct dwarf_block *block = attr->as_block (); |
24490 | baton->size = block->size; | |
24491 | baton->data = block->data; | |
0d53c4c4 DJ |
24492 | } |
24493 | else | |
24494 | { | |
24495 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24496 | sym->natural_name ()); |
0d53c4c4 | 24497 | baton->size = 0; |
0d53c4c4 | 24498 | } |
6e70227d | 24499 | |
f1e6e072 TT |
24500 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24501 | ? dwarf2_locexpr_block_index | |
24502 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24503 | SYMBOL_LOCATION_BATON (sym) = baton; |
24504 | } | |
4c2df51b | 24505 | } |
6502dd73 | 24506 | |
2e6a9f79 | 24507 | /* See read.h. */ |
96408a79 | 24508 | |
2e6a9f79 SM |
24509 | const comp_unit_head * |
24510 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24511 | { |
2e6a9f79 SM |
24512 | if (!m_header_read_in) |
24513 | { | |
24514 | const gdb_byte *info_ptr | |
24515 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24516 | |
2e6a9f79 | 24517 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24518 | |
2e6a9f79 SM |
24519 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24520 | rcuh_kind::COMPILE); | |
a9f172c6 TT |
24521 | |
24522 | m_header_read_in = true; | |
2e6a9f79 | 24523 | } |
96408a79 | 24524 | |
2e6a9f79 | 24525 | return &m_header; |
96408a79 SA |
24526 | } |
24527 | ||
09ba997f | 24528 | /* See read.h. */ |
ae0d2f24 | 24529 | |
98714339 | 24530 | int |
09ba997f | 24531 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24532 | { |
2e6a9f79 | 24533 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24534 | } |
24535 | ||
09ba997f | 24536 | /* See read.h. */ |
9eae7c52 TT |
24537 | |
24538 | int | |
09ba997f | 24539 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24540 | { |
2e6a9f79 | 24541 | return this->get_header ()->offset_size; |
96408a79 SA |
24542 | } |
24543 | ||
09ba997f | 24544 | /* See read.h. */ |
96408a79 SA |
24545 | |
24546 | int | |
09ba997f | 24547 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24548 | { |
2e6a9f79 | 24549 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24550 | |
2e6a9f79 SM |
24551 | if (header->version == 2) |
24552 | return header->addr_size; | |
96408a79 | 24553 | else |
2e6a9f79 | 24554 | return header->offset_size; |
181cebd4 JK |
24555 | } |
24556 | ||
09ba997f | 24557 | /* See read.h. */ |
9aa1f1e3 | 24558 | |
09ba997f | 24559 | struct type * |
293e7e51 | 24560 | dwarf2_cu::addr_type () const |
9a49df9d | 24561 | { |
293e7e51 | 24562 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24563 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24564 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24565 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24566 | |
24567 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24568 | return addr_type; | |
24569 | ||
c6d940a9 | 24570 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24571 | return addr_type; |
24572 | } | |
24573 | ||
22b6cd70 TT |
24574 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24575 | the index of the result, and that searches a vector. It will | |
24576 | return a result even if the offset in question does not actually | |
24577 | occur in any CU. This is separate so that it can be unit | |
24578 | tested. */ | |
ae038cb0 | 24579 | |
22b6cd70 TT |
24580 | static int |
24581 | dwarf2_find_containing_comp_unit | |
24582 | (sect_offset sect_off, | |
24583 | unsigned int offset_in_dwz, | |
0d305d5c | 24584 | const std::vector<std::unique_ptr<dwarf2_per_cu_data>> &all_comp_units) |
ae038cb0 | 24585 | { |
ae038cb0 DJ |
24586 | int low, high; |
24587 | ||
ae038cb0 | 24588 | low = 0; |
22b6cd70 | 24589 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24590 | while (high > low) |
24591 | { | |
36586728 | 24592 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24593 | int mid = low + (high - low) / 2; |
9a619af0 | 24594 | |
0d305d5c | 24595 | mid_cu = all_comp_units[mid].get (); |
36586728 | 24596 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24597 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24598 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24599 | high = mid; |
24600 | else | |
24601 | low = mid + 1; | |
24602 | } | |
24603 | gdb_assert (low == high); | |
22b6cd70 TT |
24604 | return low; |
24605 | } | |
24606 | ||
24607 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24608 | the DIE at OFFSET. Raises an error on failure. */ | |
24609 | ||
24610 | static struct dwarf2_per_cu_data * | |
24611 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24612 | unsigned int offset_in_dwz, | |
976ca316 | 24613 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24614 | { |
976ca316 SM |
24615 | int low = dwarf2_find_containing_comp_unit |
24616 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
0d305d5c TT |
24617 | dwarf2_per_cu_data *this_cu |
24618 | = per_objfile->per_bfd->all_comp_units[low].get (); | |
22b6cd70 | 24619 | |
45b8ae0c | 24620 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24621 | { |
36586728 | 24622 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24623 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24624 | "offset %s [in module %s]"), |
24625 | sect_offset_str (sect_off), | |
976ca316 | 24626 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24627 | |
976ca316 | 24628 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24629 | <= sect_off); |
0d305d5c | 24630 | return per_objfile->per_bfd->all_comp_units[low - 1].get (); |
ae038cb0 DJ |
24631 | } |
24632 | else | |
24633 | { | |
976ca316 | 24634 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24635 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24636 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24637 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24638 | return this_cu; |
24639 | } | |
24640 | } | |
24641 | ||
22b6cd70 TT |
24642 | #if GDB_SELF_TEST |
24643 | ||
24644 | namespace selftests { | |
24645 | namespace find_containing_comp_unit { | |
24646 | ||
24647 | static void | |
24648 | run_test () | |
24649 | { | |
0d305d5c TT |
24650 | std::unique_ptr<dwarf2_per_cu_data> one (new dwarf2_per_cu_data); |
24651 | dwarf2_per_cu_data *one_ptr = one.get (); | |
24652 | std::unique_ptr<dwarf2_per_cu_data> two (new dwarf2_per_cu_data); | |
24653 | dwarf2_per_cu_data *two_ptr = two.get (); | |
24654 | std::unique_ptr<dwarf2_per_cu_data> three (new dwarf2_per_cu_data); | |
24655 | dwarf2_per_cu_data *three_ptr = three.get (); | |
24656 | std::unique_ptr<dwarf2_per_cu_data> four (new dwarf2_per_cu_data); | |
24657 | dwarf2_per_cu_data *four_ptr = four.get (); | |
24658 | ||
24659 | one->length = 5; | |
24660 | two->sect_off = sect_offset (one->length); | |
24661 | two->length = 7; | |
24662 | ||
24663 | three->length = 5; | |
24664 | three->is_dwz = 1; | |
24665 | four->sect_off = sect_offset (three->length); | |
24666 | four->length = 7; | |
24667 | four->is_dwz = 1; | |
24668 | ||
24669 | std::vector<std::unique_ptr<dwarf2_per_cu_data>> units; | |
24670 | units.push_back (std::move (one)); | |
24671 | units.push_back (std::move (two)); | |
24672 | units.push_back (std::move (three)); | |
24673 | units.push_back (std::move (four)); | |
22b6cd70 TT |
24674 | |
24675 | int result; | |
24676 | ||
24677 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
0d305d5c | 24678 | SELF_CHECK (units[result].get () == one_ptr); |
22b6cd70 | 24679 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); |
0d305d5c | 24680 | SELF_CHECK (units[result].get () == one_ptr); |
22b6cd70 | 24681 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); |
0d305d5c | 24682 | SELF_CHECK (units[result].get () == two_ptr); |
22b6cd70 TT |
24683 | |
24684 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
0d305d5c | 24685 | SELF_CHECK (units[result].get () == three_ptr); |
22b6cd70 | 24686 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); |
0d305d5c | 24687 | SELF_CHECK (units[result].get () == three_ptr); |
22b6cd70 | 24688 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); |
0d305d5c | 24689 | SELF_CHECK (units[result].get () == four_ptr); |
22b6cd70 TT |
24690 | } |
24691 | ||
24692 | } | |
24693 | } | |
24694 | ||
24695 | #endif /* GDB_SELF_TEST */ | |
24696 | ||
9e021579 | 24697 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24698 | |
9e021579 SM |
24699 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24700 | dwarf2_per_objfile *per_objfile) | |
24701 | : per_cu (per_cu), | |
24702 | per_objfile (per_objfile), | |
9068261f AB |
24703 | mark (false), |
24704 | has_loclist (false), | |
24705 | checked_producer (false), | |
24706 | producer_is_gxx_lt_4_6 (false), | |
24707 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24708 | producer_is_icc (false), |
9068261f | 24709 | producer_is_icc_lt_14 (false), |
c258c396 | 24710 | producer_is_codewarrior (false), |
9068261f | 24711 | processing_has_namespace_info (false) |
93311388 | 24712 | { |
9816fde3 JK |
24713 | } |
24714 | ||
24715 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24716 | ||
24717 | static void | |
95554aad TT |
24718 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24719 | enum language pretend_language) | |
9816fde3 JK |
24720 | { |
24721 | struct attribute *attr; | |
24722 | ||
24723 | /* Set the language we're debugging. */ | |
24724 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24725 | if (attr != nullptr) |
529908cb | 24726 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 24727 | else |
9cded63f | 24728 | { |
95554aad | 24729 | cu->language = pretend_language; |
9cded63f TT |
24730 | cu->language_defn = language_def (cu->language); |
24731 | } | |
dee91e82 | 24732 | |
7d45c7c3 | 24733 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24734 | } |
24735 | ||
7188ed02 | 24736 | /* See read.h. */ |
ae038cb0 | 24737 | |
7188ed02 SM |
24738 | dwarf2_cu * |
24739 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24740 | { |
7188ed02 SM |
24741 | auto it = m_dwarf2_cus.find (per_cu); |
24742 | if (it == m_dwarf2_cus.end ()) | |
24743 | return nullptr; | |
ae038cb0 | 24744 | |
7188ed02 SM |
24745 | return it->second; |
24746 | } | |
24747 | ||
24748 | /* See read.h. */ | |
24749 | ||
24750 | void | |
24751 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24752 | { | |
24753 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24754 | ||
24755 | m_dwarf2_cus[per_cu] = cu; | |
24756 | } | |
24757 | ||
24758 | /* See read.h. */ | |
24759 | ||
24760 | void | |
24761 | dwarf2_per_objfile::age_comp_units () | |
24762 | { | |
17e593e9 SM |
24763 | dwarf_read_debug_printf_v ("running"); |
24764 | ||
08ac5771 SM |
24765 | /* This is not expected to be called in the middle of CU expansion. There is |
24766 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
24767 | loaded in memory. Calling age_comp_units while the queue is in use could | |
24768 | make us free the DIEs for a CU that is in the queue and therefore break | |
24769 | that invariant. */ | |
24770 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
24771 | ||
7188ed02 SM |
24772 | /* Start by clearing all marks. */ |
24773 | for (auto pair : m_dwarf2_cus) | |
24774 | pair.second->mark = false; | |
24775 | ||
24776 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24777 | enough. */ | |
24778 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24779 | { |
7188ed02 SM |
24780 | dwarf2_cu *cu = pair.second; |
24781 | ||
24782 | cu->last_used++; | |
24783 | if (cu->last_used <= dwarf_max_cache_age) | |
24784 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24785 | } |
24786 | ||
7188ed02 SM |
24787 | /* Delete all CUs still not marked. */ |
24788 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24789 | { |
7188ed02 | 24790 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24791 | |
7188ed02 | 24792 | if (!cu->mark) |
ae038cb0 | 24793 | { |
17e593e9 SM |
24794 | dwarf_read_debug_printf_v ("deleting old CU %s", |
24795 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
24796 | delete cu; |
24797 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24798 | } |
24799 | else | |
7188ed02 | 24800 | it++; |
ae038cb0 DJ |
24801 | } |
24802 | } | |
24803 | ||
7188ed02 | 24804 | /* See read.h. */ |
ae038cb0 | 24805 | |
7188ed02 SM |
24806 | void |
24807 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24808 | { |
7188ed02 SM |
24809 | auto it = m_dwarf2_cus.find (per_cu); |
24810 | if (it == m_dwarf2_cus.end ()) | |
24811 | return; | |
ae038cb0 | 24812 | |
7188ed02 | 24813 | delete it->second; |
ae038cb0 | 24814 | |
7188ed02 SM |
24815 | m_dwarf2_cus.erase (it); |
24816 | } | |
ae038cb0 | 24817 | |
7188ed02 SM |
24818 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24819 | { | |
24820 | remove_all_cus (); | |
ae038cb0 DJ |
24821 | } |
24822 | ||
dee91e82 DE |
24823 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24824 | We store these in a hash table separate from the DIEs, and preserve them | |
24825 | when the DIEs are flushed out of cache. | |
24826 | ||
24827 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24828 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24829 | or the type may come from a DWO file. Furthermore, while it's more logical |
24830 | to use per_cu->section+offset, with Fission the section with the data is in | |
24831 | the DWO file but we don't know that section at the point we need it. | |
24832 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24833 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24834 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24835 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24836 | |
dee91e82 | 24837 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24838 | { |
dee91e82 | 24839 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24840 | sect_offset sect_off; |
1c379e20 DJ |
24841 | struct type *type; |
24842 | }; | |
24843 | ||
dee91e82 | 24844 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24845 | |
24846 | static hashval_t | |
dee91e82 | 24847 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24848 | { |
9a3c8263 SM |
24849 | const struct dwarf2_per_cu_offset_and_type *ofs |
24850 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24851 | |
9c541725 | 24852 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24853 | } |
24854 | ||
dee91e82 | 24855 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24856 | |
24857 | static int | |
dee91e82 | 24858 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24859 | { |
9a3c8263 SM |
24860 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24861 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24862 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24863 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24864 | |
dee91e82 | 24865 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24866 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24867 | } |
24868 | ||
24869 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24870 | table if necessary. For convenience, return TYPE. |
24871 | ||
24872 | The DIEs reading must have careful ordering to: | |
85102364 | 24873 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24874 | reading current DIE. |
24875 | * Not trying to dereference contents of still incompletely read in types | |
24876 | while reading in other DIEs. | |
24877 | * Enable referencing still incompletely read in types just by a pointer to | |
24878 | the type without accessing its fields. | |
24879 | ||
24880 | Therefore caller should follow these rules: | |
24881 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24882 | before building the type and calling set_die_type. | |
e71ec853 | 24883 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24884 | possible before fetching more types to complete the current type. |
24885 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24886 | |
f792889a | 24887 | static struct type * |
57567375 TT |
24888 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
24889 | bool skip_data_location) | |
1c379e20 | 24890 | { |
976ca316 | 24891 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 24892 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 24893 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
24894 | struct attribute *attr; |
24895 | struct dynamic_prop prop; | |
1c379e20 | 24896 | |
b4ba55a1 JB |
24897 | /* For Ada types, make sure that the gnat-specific data is always |
24898 | initialized (if not already set). There are a few types where | |
24899 | we should not be doing so, because the type-specific area is | |
24900 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24901 | where the type-specific area is used to store the floatformat). | |
24902 | But this is not a problem, because the gnat-specific information | |
24903 | is actually not needed for these types. */ | |
24904 | if (need_gnat_info (cu) | |
78134374 SM |
24905 | && type->code () != TYPE_CODE_FUNC |
24906 | && type->code () != TYPE_CODE_FLT | |
24907 | && type->code () != TYPE_CODE_METHODPTR | |
24908 | && type->code () != TYPE_CODE_MEMBERPTR | |
24909 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 24910 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
24911 | && !HAVE_GNAT_AUX_INFO (type)) |
24912 | INIT_GNAT_SPECIFIC (type); | |
24913 | ||
3f2f83dd KB |
24914 | /* Read DW_AT_allocated and set in type. */ |
24915 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 24916 | if (attr != NULL) |
3f2f83dd | 24917 | { |
293e7e51 | 24918 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24919 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24920 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 24921 | } |
3f2f83dd KB |
24922 | |
24923 | /* Read DW_AT_associated and set in type. */ | |
24924 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 24925 | if (attr != NULL) |
3f2f83dd | 24926 | { |
293e7e51 | 24927 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24928 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24929 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 24930 | } |
3f2f83dd | 24931 | |
3cdcd0ce | 24932 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
24933 | if (!skip_data_location) |
24934 | { | |
24935 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
24936 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
24937 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
24938 | } | |
3cdcd0ce | 24939 | |
976ca316 SM |
24940 | if (per_objfile->die_type_hash == NULL) |
24941 | per_objfile->die_type_hash | |
0335378b TT |
24942 | = htab_up (htab_create_alloc (127, |
24943 | per_cu_offset_and_type_hash, | |
24944 | per_cu_offset_and_type_eq, | |
24945 | NULL, xcalloc, xfree)); | |
1c379e20 | 24946 | |
dee91e82 | 24947 | ofs.per_cu = cu->per_cu; |
9c541725 | 24948 | ofs.sect_off = die->sect_off; |
1c379e20 | 24949 | ofs.type = type; |
dee91e82 | 24950 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 24951 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 24952 | if (*slot) |
b98664d3 | 24953 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 24954 | sect_offset_str (die->sect_off)); |
8d749320 SM |
24955 | *slot = XOBNEW (&objfile->objfile_obstack, |
24956 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 24957 | **slot = ofs; |
f792889a | 24958 | return type; |
1c379e20 DJ |
24959 | } |
24960 | ||
9c541725 | 24961 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 24962 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
24963 | |
24964 | static struct type * | |
9c541725 | 24965 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 24966 | dwarf2_per_cu_data *per_cu, |
976ca316 | 24967 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 24968 | { |
dee91e82 | 24969 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 24970 | |
976ca316 | 24971 | if (per_objfile->die_type_hash == NULL) |
f792889a | 24972 | return NULL; |
1c379e20 | 24973 | |
dee91e82 | 24974 | ofs.per_cu = per_cu; |
9c541725 | 24975 | ofs.sect_off = sect_off; |
9a3c8263 | 24976 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 24977 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
24978 | if (slot) |
24979 | return slot->type; | |
24980 | else | |
24981 | return NULL; | |
24982 | } | |
24983 | ||
02142a6c | 24984 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
24985 | or return NULL if DIE does not have a saved type. */ |
24986 | ||
24987 | static struct type * | |
24988 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
24989 | { | |
aa66c379 | 24990 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
24991 | } |
24992 | ||
10b3939b DJ |
24993 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
24994 | ||
24995 | static void | |
24996 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
24997 | struct dwarf2_per_cu_data *ref_per_cu) | |
24998 | { | |
24999 | void **slot; | |
25000 | ||
25001 | if (cu->dependencies == NULL) | |
25002 | cu->dependencies | |
25003 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25004 | NULL, &cu->comp_unit_obstack, | |
25005 | hashtab_obstack_allocate, | |
25006 | dummy_obstack_deallocate); | |
25007 | ||
25008 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25009 | if (*slot == NULL) | |
25010 | *slot = ref_per_cu; | |
25011 | } | |
1c379e20 | 25012 | |
f504f079 DE |
25013 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25014 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25015 | cache that we must keep because we are keeping CU. |
25016 | ||
25017 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25018 | |
10b3939b DJ |
25019 | static int |
25020 | dwarf2_mark_helper (void **slot, void *data) | |
25021 | { | |
7188ed02 SM |
25022 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25023 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25024 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25025 | |
25026 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25027 | reading of the chain. As such dependencies remain valid it is not much | |
25028 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25029 | if (cu == nullptr) |
d07ed419 JK |
25030 | return 1; |
25031 | ||
7188ed02 | 25032 | if (cu->mark) |
10b3939b | 25033 | return 1; |
10b3939b | 25034 | |
7188ed02 SM |
25035 | cu->mark = true; |
25036 | ||
25037 | if (cu->dependencies != nullptr) | |
25038 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25039 | |
25040 | return 1; | |
25041 | } | |
25042 | ||
f504f079 DE |
25043 | /* Set the mark field in CU and in every other compilation unit in the |
25044 | cache that we must keep because we are keeping CU. */ | |
25045 | ||
ae038cb0 DJ |
25046 | static void |
25047 | dwarf2_mark (struct dwarf2_cu *cu) | |
25048 | { | |
25049 | if (cu->mark) | |
25050 | return; | |
7188ed02 | 25051 | |
9068261f | 25052 | cu->mark = true; |
ae038cb0 | 25053 | |
7188ed02 SM |
25054 | if (cu->dependencies != nullptr) |
25055 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25056 | } |
25057 | ||
72bf9492 DJ |
25058 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25059 | is its offset in .debug_info for this objfile. */ | |
25060 | ||
25061 | static hashval_t | |
25062 | partial_die_hash (const void *item) | |
25063 | { | |
9a3c8263 SM |
25064 | const struct partial_die_info *part_die |
25065 | = (const struct partial_die_info *) item; | |
9a619af0 | 25066 | |
9c541725 | 25067 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25068 | } |
25069 | ||
25070 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25071 | are equal if they have the same offset. */ | |
25072 | ||
25073 | static int | |
25074 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25075 | { | |
9a3c8263 SM |
25076 | const struct partial_die_info *part_die_lhs |
25077 | = (const struct partial_die_info *) item_lhs; | |
25078 | const struct partial_die_info *part_die_rhs | |
25079 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25080 | |
9c541725 | 25081 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25082 | } |
25083 | ||
3c3bb058 AB |
25084 | struct cmd_list_element *set_dwarf_cmdlist; |
25085 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25086 | |
9291a0cd | 25087 | static void |
cd4fb1b2 SM |
25088 | show_check_physname (struct ui_file *file, int from_tty, |
25089 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25090 | { |
cd4fb1b2 SM |
25091 | fprintf_filtered (file, |
25092 | _("Whether to check \"physname\" is %s.\n"), | |
25093 | value); | |
9291a0cd TT |
25094 | } |
25095 | ||
6c265988 | 25096 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25097 | void |
6c265988 | 25098 | _initialize_dwarf2_read () |
9291a0cd | 25099 | { |
0743fc83 | 25100 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25101 | Set DWARF specific variables.\n\ |
590042fc | 25102 | Configure DWARF variables such as the cache size."), |
2f822da5 | 25103 | &set_dwarf_cmdlist, |
0743fc83 | 25104 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
156942c7 | 25105 | |
0743fc83 | 25106 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25107 | Show DWARF specific variables.\n\ |
25108 | Show DWARF variables such as the cache size."), | |
2f822da5 | 25109 | &show_dwarf_cmdlist, |
0743fc83 | 25110 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
156942c7 | 25111 | |
cd4fb1b2 SM |
25112 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25113 | &dwarf_max_cache_age, _("\ | |
25114 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25115 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25116 | A higher limit means that cached compilation units will be stored\n\ | |
25117 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25118 | caching, which can slow down startup."), | |
25119 | NULL, | |
25120 | show_dwarf_max_cache_age, | |
25121 | &set_dwarf_cmdlist, | |
25122 | &show_dwarf_cmdlist); | |
156942c7 | 25123 | |
cd4fb1b2 SM |
25124 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25125 | Set debugging of the DWARF reader."), _("\ | |
25126 | Show debugging of the DWARF reader."), _("\ | |
25127 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25128 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25129 | information. A value greater than 1 provides more verbose information."), | |
25130 | NULL, | |
25131 | NULL, | |
25132 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25133 | |
cd4fb1b2 SM |
25134 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25135 | Set debugging of the DWARF DIE reader."), _("\ | |
25136 | Show debugging of the DWARF DIE reader."), _("\ | |
25137 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25138 | The value is the maximum depth to print."), | |
25139 | NULL, | |
25140 | NULL, | |
25141 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25142 | |
cd4fb1b2 SM |
25143 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25144 | Set debugging of the dwarf line reader."), _("\ | |
25145 | Show debugging of the dwarf line reader."), _("\ | |
25146 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25147 | A value of 1 (one) provides basic information.\n\ | |
25148 | A value greater than 1 provides more verbose information."), | |
25149 | NULL, | |
25150 | NULL, | |
25151 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25152 | |
cd4fb1b2 SM |
25153 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25154 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25155 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25156 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25157 | the demangler."), | |
25158 | NULL, show_check_physname, | |
25159 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25160 | |
e615022a DE |
25161 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25162 | no_class, &use_deprecated_index_sections, _("\ | |
25163 | Set whether to use deprecated gdb_index sections."), _("\ | |
25164 | Show whether to use deprecated gdb_index sections."), _("\ | |
25165 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25166 | Normally they are ignored either because of a missing feature or\n\ | |
25167 | performance issue.\n\ | |
25168 | Warning: This option must be enabled before gdb reads the file."), | |
25169 | NULL, | |
25170 | NULL, | |
25171 | &setlist, &showlist); | |
25172 | ||
f1e6e072 TT |
25173 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25174 | &dwarf2_locexpr_funcs); | |
25175 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25176 | &dwarf2_loclist_funcs); | |
25177 | ||
25178 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25179 | &dwarf2_block_frame_base_locexpr_funcs); | |
25180 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25181 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25182 | |
25183 | #if GDB_SELF_TEST | |
25184 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25185 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25186 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25187 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25188 | #endif |
6502dd73 | 25189 | } |