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 | |
c24bdb02 KS |
687 | /* Get the buildsym_compunit for this CU. */ |
688 | buildsym_compunit *get_builder () | |
689 | { | |
690 | /* If this CU has a builder associated with it, use that. */ | |
691 | if (m_builder != nullptr) | |
692 | return m_builder.get (); | |
693 | ||
c24bdb02 KS |
694 | return nullptr; |
695 | } | |
e7c27a73 DJ |
696 | }; |
697 | ||
094b34ac DE |
698 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
699 | This includes type_unit_group and quick_file_names. */ | |
700 | ||
701 | struct stmt_list_hash | |
702 | { | |
703 | /* The DWO unit this table is from or NULL if there is none. */ | |
704 | struct dwo_unit *dwo_unit; | |
705 | ||
706 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 707 | sect_offset line_sect_off; |
094b34ac DE |
708 | }; |
709 | ||
5989a64e | 710 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
711 | an object of this type. This contains elements of type unit groups |
712 | that can be shared across objfiles. The non-shareable parts are in | |
713 | type_unit_group_unshareable. */ | |
f4dc4d17 | 714 | |
0d305d5c | 715 | struct type_unit_group : public dwarf2_per_cu_data |
f4dc4d17 | 716 | { |
0186c6a7 DE |
717 | /* The TUs that share this DW_AT_stmt_list entry. |
718 | This is added to while parsing type units to build partial symtabs, | |
719 | and is deleted afterwards and not used again. */ | |
0d305d5c | 720 | std::vector<signatured_type *> *tus = nullptr; |
f4dc4d17 | 721 | |
094b34ac | 722 | /* The data used to construct the hash key. */ |
0d305d5c | 723 | struct stmt_list_hash hash {}; |
f4dc4d17 DE |
724 | }; |
725 | ||
73869dc2 | 726 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
727 | |
728 | struct dwo_sections | |
729 | { | |
730 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
731 | struct dwarf2_section_info line; |
732 | struct dwarf2_section_info loc; | |
43988095 | 733 | struct dwarf2_section_info loclists; |
09262596 DE |
734 | struct dwarf2_section_info macinfo; |
735 | struct dwarf2_section_info macro; | |
d0ce17d8 | 736 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
737 | struct dwarf2_section_info str; |
738 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
739 | /* In the case of a virtual DWO file, these two are unused. */ |
740 | struct dwarf2_section_info info; | |
fd5866f6 | 741 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
742 | }; |
743 | ||
c88ee1f0 | 744 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
745 | |
746 | struct dwo_unit | |
747 | { | |
748 | /* Backlink to the containing struct dwo_file. */ | |
749 | struct dwo_file *dwo_file; | |
750 | ||
751 | /* The "id" that distinguishes this CU/TU. | |
752 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
753 | Since signatures came first, we stick with it for consistency. */ | |
754 | ULONGEST signature; | |
755 | ||
756 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 757 | struct dwarf2_section_info *section; |
3019eac3 | 758 | |
9c541725 PA |
759 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
760 | sect_offset sect_off; | |
3019eac3 DE |
761 | unsigned int length; |
762 | ||
763 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
764 | cu_offset type_offset_in_tu; | |
765 | }; | |
766 | ||
73869dc2 DE |
767 | /* include/dwarf2.h defines the DWP section codes. |
768 | It defines a max value but it doesn't define a min value, which we | |
769 | use for error checking, so provide one. */ | |
770 | ||
771 | enum dwp_v2_section_ids | |
772 | { | |
773 | DW_SECT_MIN = 1 | |
774 | }; | |
775 | ||
80626a55 | 776 | /* Data for one DWO file. |
57d63ce2 DE |
777 | |
778 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
779 | appears in a DWP file). DWP files don't really have DWO files per se - | |
780 | comdat folding of types "loses" the DWO file they came from, and from | |
781 | a high level view DWP files appear to contain a mass of random types. | |
782 | However, to maintain consistency with the non-DWP case we pretend DWP | |
783 | files contain virtual DWO files, and we assign each TU with one virtual | |
784 | DWO file (generally based on the line and abbrev section offsets - | |
785 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
786 | |
787 | struct dwo_file | |
788 | { | |
51ac9db5 SM |
789 | dwo_file () = default; |
790 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
791 | ||
18a8505e | 792 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
793 | For virtual DWO files the name is constructed from the section offsets |
794 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
795 | from related CU+TUs. */ | |
51ac9db5 | 796 | const char *dwo_name = nullptr; |
0ac5b59e DE |
797 | |
798 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 799 | const char *comp_dir = nullptr; |
3019eac3 | 800 | |
80626a55 DE |
801 | /* The bfd, when the file is open. Otherwise this is NULL. |
802 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 803 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 804 | |
73869dc2 | 805 | /* The sections that make up this DWO file. |
d2854d8d | 806 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 807 | sections (for lack of a better name). */ |
51ac9db5 | 808 | struct dwo_sections sections {}; |
3019eac3 | 809 | |
33c5cd75 DB |
810 | /* The CUs in the file. |
811 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
812 | an extension to handle LLVM's Link Time Optimization output (where | |
813 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 814 | htab_up cus; |
3019eac3 DE |
815 | |
816 | /* Table of TUs in the file. | |
817 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 818 | htab_up tus; |
3019eac3 DE |
819 | }; |
820 | ||
80626a55 DE |
821 | /* These sections are what may appear in a DWP file. */ |
822 | ||
823 | struct dwp_sections | |
824 | { | |
d2854d8d | 825 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
826 | struct dwarf2_section_info str; |
827 | struct dwarf2_section_info cu_index; | |
828 | struct dwarf2_section_info tu_index; | |
73869dc2 | 829 | |
d2854d8d | 830 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
831 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
832 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
833 | In DWP version 2 or 5 there is at most one copy of all these sections, |
834 | each section being (effectively) comprised of the concatenation of all of | |
835 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
836 | To keep the code simple we treat each of these concatenated pieces as a |
837 | section itself (a virtual section?). */ | |
838 | struct dwarf2_section_info abbrev; | |
839 | struct dwarf2_section_info info; | |
840 | struct dwarf2_section_info line; | |
841 | struct dwarf2_section_info loc; | |
d2854d8d | 842 | struct dwarf2_section_info loclists; |
73869dc2 DE |
843 | struct dwarf2_section_info macinfo; |
844 | struct dwarf2_section_info macro; | |
d2854d8d | 845 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
846 | struct dwarf2_section_info str_offsets; |
847 | struct dwarf2_section_info types; | |
80626a55 DE |
848 | }; |
849 | ||
73869dc2 DE |
850 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
851 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 852 | |
73869dc2 | 853 | struct virtual_v1_dwo_sections |
80626a55 DE |
854 | { |
855 | struct dwarf2_section_info abbrev; | |
856 | struct dwarf2_section_info line; | |
857 | struct dwarf2_section_info loc; | |
858 | struct dwarf2_section_info macinfo; | |
859 | struct dwarf2_section_info macro; | |
860 | struct dwarf2_section_info str_offsets; | |
861 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 862 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
863 | struct dwarf2_section_info info_or_types; |
864 | }; | |
865 | ||
d2854d8d | 866 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
867 | In version 2, the sections of the DWO files are concatenated together |
868 | and stored in one section of that name. Thus each ELF section contains | |
869 | several "virtual" sections. */ | |
870 | ||
d2854d8d | 871 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
872 | { |
873 | bfd_size_type abbrev_offset; | |
874 | bfd_size_type abbrev_size; | |
875 | ||
876 | bfd_size_type line_offset; | |
877 | bfd_size_type line_size; | |
878 | ||
879 | bfd_size_type loc_offset; | |
880 | bfd_size_type loc_size; | |
881 | ||
d2854d8d CT |
882 | bfd_size_type loclists_offset; |
883 | bfd_size_type loclists_size; | |
884 | ||
73869dc2 DE |
885 | bfd_size_type macinfo_offset; |
886 | bfd_size_type macinfo_size; | |
887 | ||
888 | bfd_size_type macro_offset; | |
889 | bfd_size_type macro_size; | |
890 | ||
d2854d8d CT |
891 | bfd_size_type rnglists_offset; |
892 | bfd_size_type rnglists_size; | |
893 | ||
73869dc2 DE |
894 | bfd_size_type str_offsets_offset; |
895 | bfd_size_type str_offsets_size; | |
896 | ||
897 | /* Each DWP hash table entry records one CU or one TU. | |
898 | That is recorded here, and copied to dwo_unit.section. */ | |
899 | bfd_size_type info_or_types_offset; | |
900 | bfd_size_type info_or_types_size; | |
901 | }; | |
902 | ||
80626a55 DE |
903 | /* Contents of DWP hash tables. */ |
904 | ||
905 | struct dwp_hash_table | |
906 | { | |
73869dc2 | 907 | uint32_t version, nr_columns; |
80626a55 | 908 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
909 | const gdb_byte *hash_table, *unit_table; |
910 | union | |
911 | { | |
912 | struct | |
913 | { | |
914 | const gdb_byte *indices; | |
915 | } v1; | |
916 | struct | |
917 | { | |
918 | /* This is indexed by column number and gives the id of the section | |
919 | in that column. */ | |
920 | #define MAX_NR_V2_DWO_SECTIONS \ | |
921 | (1 /* .debug_info or .debug_types */ \ | |
922 | + 1 /* .debug_abbrev */ \ | |
923 | + 1 /* .debug_line */ \ | |
924 | + 1 /* .debug_loc */ \ | |
925 | + 1 /* .debug_str_offsets */ \ | |
926 | + 1 /* .debug_macro or .debug_macinfo */) | |
927 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
928 | const gdb_byte *offsets; | |
929 | const gdb_byte *sizes; | |
930 | } v2; | |
d2854d8d CT |
931 | struct |
932 | { | |
933 | /* This is indexed by column number and gives the id of the section | |
934 | in that column. */ | |
935 | #define MAX_NR_V5_DWO_SECTIONS \ | |
936 | (1 /* .debug_info */ \ | |
937 | + 1 /* .debug_abbrev */ \ | |
938 | + 1 /* .debug_line */ \ | |
939 | + 1 /* .debug_loclists */ \ | |
940 | + 1 /* .debug_str_offsets */ \ | |
941 | + 1 /* .debug_macro */ \ | |
942 | + 1 /* .debug_rnglists */) | |
943 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
944 | const gdb_byte *offsets; | |
945 | const gdb_byte *sizes; | |
946 | } v5; | |
73869dc2 | 947 | } section_pool; |
80626a55 DE |
948 | }; |
949 | ||
950 | /* Data for one DWP file. */ | |
951 | ||
952 | struct dwp_file | |
953 | { | |
400174b1 TT |
954 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
955 | : name (name_), | |
956 | dbfd (std::move (abfd)) | |
957 | { | |
958 | } | |
959 | ||
80626a55 DE |
960 | /* Name of the file. */ |
961 | const char *name; | |
962 | ||
73869dc2 | 963 | /* File format version. */ |
400174b1 | 964 | int version = 0; |
73869dc2 | 965 | |
93417882 | 966 | /* The bfd. */ |
400174b1 | 967 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
968 | |
969 | /* Section info for this file. */ | |
400174b1 | 970 | struct dwp_sections sections {}; |
80626a55 | 971 | |
57d63ce2 | 972 | /* Table of CUs in the file. */ |
400174b1 | 973 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
974 | |
975 | /* Table of TUs in the file. */ | |
400174b1 | 976 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 977 | |
19ac8c2e | 978 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
979 | htab_up loaded_cus; |
980 | htab_up loaded_tus; | |
80626a55 | 981 | |
73869dc2 DE |
982 | /* Table to map ELF section numbers to their sections. |
983 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
984 | unsigned int num_sections = 0; |
985 | asection **elf_sections = nullptr; | |
80626a55 DE |
986 | }; |
987 | ||
0963b4bd MS |
988 | /* Struct used to pass misc. parameters to read_die_and_children, et |
989 | al. which are used for both .debug_info and .debug_types dies. | |
990 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 991 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
992 | |
993 | struct die_reader_specs | |
994 | { | |
a32a8923 | 995 | /* The bfd of die_section. */ |
0280fdcc | 996 | bfd *abfd; |
93311388 DE |
997 | |
998 | /* The CU of the DIE we are parsing. */ | |
999 | struct dwarf2_cu *cu; | |
1000 | ||
80626a55 | 1001 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1002 | struct dwo_file *dwo_file; |
1003 | ||
dee91e82 | 1004 | /* The section the die comes from. |
3019eac3 | 1005 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1006 | struct dwarf2_section_info *die_section; |
1007 | ||
1008 | /* die_section->buffer. */ | |
d521ce57 | 1009 | const gdb_byte *buffer; |
f664829e DE |
1010 | |
1011 | /* The end of the buffer. */ | |
1012 | const gdb_byte *buffer_end; | |
a2ce51a0 | 1013 | |
685af9cd TT |
1014 | /* The abbreviation table to use when reading the DIEs. */ |
1015 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1016 | }; |
1017 | ||
c0ab21c2 TT |
1018 | /* A subclass of die_reader_specs that holds storage and has complex |
1019 | constructor and destructor behavior. */ | |
1020 | ||
1021 | class cutu_reader : public die_reader_specs | |
1022 | { | |
1023 | public: | |
1024 | ||
ab432490 SM |
1025 | cutu_reader (dwarf2_per_cu_data *this_cu, |
1026 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 1027 | struct abbrev_table *abbrev_table, |
2e671100 | 1028 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
1029 | bool skip_partial); |
1030 | ||
1031 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 1032 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
1033 | struct dwarf2_cu *parent_cu = nullptr, |
1034 | struct dwo_file *dwo_file = nullptr); | |
1035 | ||
c0ab21c2 TT |
1036 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
1037 | ||
1038 | const gdb_byte *info_ptr = nullptr; | |
1039 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1040 | bool dummy_p = false; |
1041 | ||
6751ebae TT |
1042 | /* Release the new CU, putting it on the chain. This cannot be done |
1043 | for dummy CUs. */ | |
1044 | void keep (); | |
1045 | ||
c0ab21c2 | 1046 | private: |
9e021579 SM |
1047 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1048 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1049 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1050 | |
1051 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1052 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1053 | ||
1054 | /* The ordinary abbreviation table. */ | |
1055 | abbrev_table_up m_abbrev_table_holder; | |
1056 | ||
1057 | /* The DWO abbreviation table. */ | |
1058 | abbrev_table_up m_dwo_abbrev_table; | |
1059 | }; | |
dee91e82 | 1060 | |
c906108c | 1061 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1062 | need this much information. */ |
6f06d47b | 1063 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1064 | { |
7c32eebb | 1065 | partial_die_info (sect_offset sect_off, const struct abbrev_info *abbrev); |
6f06d47b YQ |
1066 | |
1067 | /* Disable assign but still keep copy ctor, which is needed | |
1068 | load_partial_dies. */ | |
1069 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1070 | ||
52356b79 YQ |
1071 | /* Adjust the partial die before generating a symbol for it. This |
1072 | function may set the is_external flag or change the DIE's | |
1073 | name. */ | |
1074 | void fixup (struct dwarf2_cu *cu); | |
1075 | ||
48fbe735 YQ |
1076 | /* Read a minimal amount of information into the minimal die |
1077 | structure. */ | |
1078 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1079 | const struct abbrev_info &abbrev, | |
1080 | const gdb_byte *info_ptr); | |
1081 | ||
7d00ffec TT |
1082 | /* Compute the name of this partial DIE. This memoizes the |
1083 | result, so it is safe to call multiple times. */ | |
1084 | const char *name (dwarf2_cu *cu); | |
1085 | ||
72bf9492 | 1086 | /* Offset of this DIE. */ |
6f06d47b | 1087 | const sect_offset sect_off; |
72bf9492 DJ |
1088 | |
1089 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1090 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1091 | |
72bf9492 | 1092 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1093 | const unsigned int has_children : 1; |
1094 | ||
72bf9492 DJ |
1095 | unsigned int is_external : 1; |
1096 | unsigned int is_declaration : 1; | |
1097 | unsigned int has_type : 1; | |
1098 | unsigned int has_specification : 1; | |
1099 | unsigned int has_pc_info : 1; | |
481860b3 | 1100 | unsigned int may_be_inlined : 1; |
72bf9492 | 1101 | |
0c1b455e TT |
1102 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1103 | unsigned int main_subprogram : 1; | |
1104 | ||
72bf9492 DJ |
1105 | /* Flag set if the SCOPE field of this structure has been |
1106 | computed. */ | |
1107 | unsigned int scope_set : 1; | |
1108 | ||
fa4028e9 JB |
1109 | /* Flag set if the DIE has a byte_size attribute. */ |
1110 | unsigned int has_byte_size : 1; | |
1111 | ||
ff908ebf AW |
1112 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1113 | unsigned int has_const_value : 1; | |
1114 | ||
98bfdba5 PA |
1115 | /* Flag set if any of the DIE's children are template arguments. */ |
1116 | unsigned int has_template_arguments : 1; | |
1117 | ||
52356b79 | 1118 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1119 | unsigned int fixup_called : 1; |
1120 | ||
36586728 TT |
1121 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1122 | unsigned int is_dwz : 1; | |
1123 | ||
1124 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1125 | unsigned int spec_is_dwz : 1; | |
1126 | ||
7d00ffec TT |
1127 | unsigned int canonical_name : 1; |
1128 | ||
72bf9492 | 1129 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1130 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1131 | const char *raw_name = nullptr; |
72bf9492 | 1132 | |
abc72ce4 | 1133 | /* The linkage name, if present. */ |
6f06d47b | 1134 | const char *linkage_name = nullptr; |
abc72ce4 | 1135 | |
72bf9492 DJ |
1136 | /* The scope to prepend to our children. This is generally |
1137 | allocated on the comp_unit_obstack, so will disappear | |
1138 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1139 | const char *scope = nullptr; |
72bf9492 | 1140 | |
95554aad TT |
1141 | /* Some data associated with the partial DIE. The tag determines |
1142 | which field is live. */ | |
1143 | union | |
1144 | { | |
1145 | /* The location description associated with this DIE, if any. */ | |
1146 | struct dwarf_block *locdesc; | |
1147 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1148 | sect_offset sect_off; |
6f06d47b | 1149 | } d {}; |
72bf9492 DJ |
1150 | |
1151 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1152 | CORE_ADDR lowpc = 0; |
1153 | CORE_ADDR highpc = 0; | |
72bf9492 | 1154 | |
93311388 | 1155 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1156 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1157 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1158 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1159 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1160 | |
1161 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1162 | DW_AT_specification (or DW_AT_abstract_origin or | |
1163 | DW_AT_extension). */ | |
6f06d47b | 1164 | sect_offset spec_offset {}; |
72bf9492 DJ |
1165 | |
1166 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1167 | if any. */ | |
6f06d47b YQ |
1168 | struct partial_die_info *die_parent = nullptr; |
1169 | struct partial_die_info *die_child = nullptr; | |
1170 | struct partial_die_info *die_sibling = nullptr; | |
1171 | ||
1172 | friend struct partial_die_info * | |
1173 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1174 | ||
1175 | private: | |
1176 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1177 | partial_die_info (sect_offset sect_off) | |
1178 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1179 | { | |
1180 | } | |
1181 | ||
1182 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1183 | int has_children_) | |
1184 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1185 | { | |
1186 | is_external = 0; | |
1187 | is_declaration = 0; | |
1188 | has_type = 0; | |
1189 | has_specification = 0; | |
1190 | has_pc_info = 0; | |
1191 | may_be_inlined = 0; | |
1192 | main_subprogram = 0; | |
1193 | scope_set = 0; | |
1194 | has_byte_size = 0; | |
1195 | has_const_value = 0; | |
1196 | has_template_arguments = 0; | |
1197 | fixup_called = 0; | |
1198 | is_dwz = 0; | |
1199 | spec_is_dwz = 0; | |
7d00ffec | 1200 | canonical_name = 0; |
6f06d47b | 1201 | } |
c906108c SS |
1202 | }; |
1203 | ||
c906108c SS |
1204 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1205 | but this would require a corresponding change in unpack_field_as_long | |
1206 | and friends. */ | |
1207 | static int bits_per_byte = 8; | |
1208 | ||
9c6a1327 TT |
1209 | struct variant_part_builder; |
1210 | ||
1211 | /* When reading a variant, we track a bit more information about the | |
1212 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1213 | |
1214 | struct variant_field | |
1215 | { | |
9c6a1327 TT |
1216 | int first_field = -1; |
1217 | int last_field = -1; | |
1218 | ||
1219 | /* A variant can contain other variant parts. */ | |
1220 | std::vector<variant_part_builder> variant_parts; | |
1221 | ||
2ddeaf8a TT |
1222 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1223 | default branch. */ | |
9c6a1327 TT |
1224 | bool default_branch = false; |
1225 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1226 | value. */ | |
1227 | ULONGEST discriminant_value = 0; | |
1228 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1229 | data. */ | |
1230 | struct dwarf_block *discr_list_data = nullptr; | |
1231 | }; | |
1232 | ||
1233 | /* This represents a DW_TAG_variant_part. */ | |
1234 | ||
1235 | struct variant_part_builder | |
1236 | { | |
1237 | /* The offset of the discriminant field. */ | |
1238 | sect_offset discriminant_offset {}; | |
1239 | ||
1240 | /* Variants that are direct children of this variant part. */ | |
1241 | std::vector<variant_field> variants; | |
1242 | ||
1243 | /* True if we're currently reading a variant. */ | |
1244 | bool processing_variant = false; | |
2ddeaf8a TT |
1245 | }; |
1246 | ||
52059ffd TT |
1247 | struct nextfield |
1248 | { | |
be2daae6 TT |
1249 | int accessibility = 0; |
1250 | int virtuality = 0; | |
9c6a1327 TT |
1251 | /* Variant parts need to find the discriminant, which is a DIE |
1252 | reference. We track the section offset of each field to make | |
1253 | this link. */ | |
1254 | sect_offset offset; | |
be2daae6 | 1255 | struct field field {}; |
52059ffd TT |
1256 | }; |
1257 | ||
1258 | struct fnfieldlist | |
1259 | { | |
be2daae6 TT |
1260 | const char *name = nullptr; |
1261 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1262 | }; |
1263 | ||
c906108c SS |
1264 | /* The routines that read and process dies for a C struct or C++ class |
1265 | pass lists of data member fields and lists of member function fields | |
1266 | in an instance of a field_info structure, as defined below. */ | |
1267 | struct field_info | |
2de01bdb SM |
1268 | { |
1269 | /* List of data member and baseclasses fields. */ | |
1270 | std::vector<struct nextfield> fields; | |
1271 | std::vector<struct nextfield> baseclasses; | |
1272 | ||
1273 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1274 | bool non_public_fields = false; |
2de01bdb SM |
1275 | |
1276 | /* Member function fieldlist array, contains name of possibly overloaded | |
1277 | member function, number of overloaded member functions and a pointer | |
1278 | to the head of the member function field chain. */ | |
1279 | std::vector<struct fnfieldlist> fnfieldlists; | |
1280 | ||
1281 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1282 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1283 | std::vector<struct decl_field> typedef_field_list; | |
1284 | ||
1285 | /* Nested types defined by this class and the number of elements in this | |
1286 | list. */ | |
1287 | std::vector<struct decl_field> nested_types_list; | |
1288 | ||
1289 | /* If non-null, this is the variant part we are currently | |
1290 | reading. */ | |
1291 | variant_part_builder *current_variant_part = nullptr; | |
1292 | /* This holds all the top-level variant parts attached to the type | |
1293 | we're reading. */ | |
1294 | std::vector<variant_part_builder> variant_parts; | |
1295 | ||
1296 | /* Return the total number of fields (including baseclasses). */ | |
1297 | int nfields () const | |
c5aa993b | 1298 | { |
2de01bdb SM |
1299 | return fields.size () + baseclasses.size (); |
1300 | } | |
1301 | }; | |
c906108c | 1302 | |
ae038cb0 DJ |
1303 | /* Loaded secondary compilation units are kept in memory until they |
1304 | have not been referenced for the processing of this many | |
1305 | compilation units. Set this to zero to disable caching. Cache | |
1306 | sizes of up to at least twenty will improve startup time for | |
1307 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1308 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1309 | static void |
b4f54984 DE |
1310 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1311 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1312 | { |
3e43a32a | 1313 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1314 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1315 | value); |
1316 | } | |
4390d890 | 1317 | \f |
c906108c SS |
1318 | /* local function prototypes */ |
1319 | ||
918dd910 JK |
1320 | static void dwarf2_find_base_address (struct die_info *die, |
1321 | struct dwarf2_cu *cu); | |
1322 | ||
891813be | 1323 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1324 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1325 | const char *name); | |
0018ea6f | 1326 | |
f1902523 JK |
1327 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1328 | const gdb_byte *info_ptr, | |
3e225074 | 1329 | struct die_info *type_unit_die); |
f1902523 | 1330 | |
976ca316 | 1331 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1332 | |
72bf9492 DJ |
1333 | static void scan_partial_symbols (struct partial_die_info *, |
1334 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1335 | int, struct dwarf2_cu *); |
c906108c | 1336 | |
72bf9492 DJ |
1337 | static void add_partial_symbol (struct partial_die_info *, |
1338 | struct dwarf2_cu *); | |
63d06c5c | 1339 | |
72bf9492 DJ |
1340 | static void add_partial_namespace (struct partial_die_info *pdi, |
1341 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1342 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1343 | |
5d7cb8df | 1344 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1345 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1346 | struct dwarf2_cu *cu); |
1347 | ||
72bf9492 DJ |
1348 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1349 | struct dwarf2_cu *cu); | |
91c24f0a | 1350 | |
bc30ff58 JB |
1351 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1352 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1353 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1354 | |
d521ce57 | 1355 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1356 | |
dee91e82 | 1357 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1358 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1359 | |
fb816e8b TV |
1360 | /* A pair of partial_die_info and compilation unit. */ |
1361 | struct cu_partial_die_info | |
1362 | { | |
1363 | /* The compilation unit of the partial_die_info. */ | |
1364 | struct dwarf2_cu *cu; | |
1365 | /* A partial_die_info. */ | |
1366 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1367 | |
1368 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1369 | : cu (cu), | |
1370 | pdi (pdi) | |
405feb71 | 1371 | { /* Nothing. */ } |
122cf0f2 AB |
1372 | |
1373 | private: | |
1374 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1375 | }; |
1376 | ||
122cf0f2 AB |
1377 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1378 | struct dwarf2_cu *); | |
72bf9492 | 1379 | |
d521ce57 | 1380 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
4444f407 TT |
1381 | struct attribute *, |
1382 | const struct attr_abbrev *, | |
7a5f294d | 1383 | const gdb_byte *); |
18a8505e AT |
1384 | |
1385 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1386 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1387 | |
1388 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1389 | |
976ca316 SM |
1390 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1391 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1392 | |
ed2dc618 | 1393 | static const char *read_indirect_string |
976ca316 | 1394 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1395 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1396 | |
ed2dc618 | 1397 | static const char *read_indirect_string_at_offset |
976ca316 | 1398 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1399 | |
d521ce57 TT |
1400 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1401 | const gdb_byte *, | |
3019eac3 DE |
1402 | unsigned int *); |
1403 | ||
18a8505e AT |
1404 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1405 | ULONGEST str_index); | |
1406 | ||
1407 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1408 | ULONGEST str_index); | |
3019eac3 | 1409 | |
e142c38c | 1410 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1411 | |
e142c38c DJ |
1412 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1413 | struct dwarf2_cu *); | |
c906108c | 1414 | |
7d45c7c3 | 1415 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1416 | struct dwarf2_cu *cu); |
7d45c7c3 | 1417 | |
a084a2a6 AT |
1418 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1419 | ||
05cf31d1 | 1420 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1421 | struct dwarf2_cu *cu); |
05cf31d1 | 1422 | |
e142c38c | 1423 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1424 | |
e142c38c | 1425 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1426 | struct dwarf2_cu **); |
63d06c5c | 1427 | |
9c541725 | 1428 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1429 | struct dwarf2_cu *cu); |
debd256d | 1430 | |
f3f5162e | 1431 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1432 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1433 | CORE_ADDR, int decode_mapping); |
c906108c | 1434 | |
804d2729 TT |
1435 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1436 | const char *); | |
c906108c | 1437 | |
a14ed312 | 1438 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1439 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1440 | |
ff39bb5e | 1441 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1442 | struct dwarf2_cu *); |
c906108c | 1443 | |
ff39bb5e | 1444 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1445 | struct type *type, |
1446 | const char *name, | |
1447 | struct obstack *obstack, | |
12df843f | 1448 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1449 | const gdb_byte **bytes, |
98bfdba5 | 1450 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1451 | |
57567375 TT |
1452 | static struct type *read_subrange_index_type (struct die_info *die, |
1453 | struct dwarf2_cu *cu); | |
1454 | ||
e7c27a73 | 1455 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1456 | |
b4ba55a1 JB |
1457 | static int need_gnat_info (struct dwarf2_cu *); |
1458 | ||
3e43a32a MS |
1459 | static struct type *die_descriptive_type (struct die_info *, |
1460 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1461 | |
1462 | static void set_descriptive_type (struct type *, struct die_info *, | |
1463 | struct dwarf2_cu *); | |
1464 | ||
e7c27a73 DJ |
1465 | static struct type *die_containing_type (struct die_info *, |
1466 | struct dwarf2_cu *); | |
c906108c | 1467 | |
ff39bb5e | 1468 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1469 | struct dwarf2_cu *); |
c906108c | 1470 | |
f792889a | 1471 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1472 | |
673bfd45 DE |
1473 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1474 | ||
0d5cff50 | 1475 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1476 | |
6e70227d | 1477 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1478 | const char *suffix, int physname, |
1479 | struct dwarf2_cu *cu); | |
63d06c5c | 1480 | |
e7c27a73 | 1481 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1482 | |
348e048f DE |
1483 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1484 | ||
e7c27a73 | 1485 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1486 | |
e7c27a73 | 1487 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1488 | |
96408a79 SA |
1489 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1490 | ||
71a3c369 TT |
1491 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1492 | ||
41144253 | 1493 | /* Return the .debug_loclists section to use for cu. */ |
1494 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1495 | ||
d0ce17d8 CT |
1496 | /* Return the .debug_rnglists section to use for cu. */ |
1497 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1498 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1499 | ||
3a2b436a | 1500 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1501 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1502 | enum pc_bounds_kind |
1503 | { | |
e385593e | 1504 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1505 | PC_BOUNDS_NOT_PRESENT, |
1506 | ||
e385593e JK |
1507 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1508 | were present but they do not form a valid range of PC addresses. */ | |
1509 | PC_BOUNDS_INVALID, | |
1510 | ||
3a2b436a JK |
1511 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1512 | PC_BOUNDS_RANGES, | |
1513 | ||
1514 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1515 | PC_BOUNDS_HIGH_LOW, | |
1516 | }; | |
1517 | ||
1518 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1519 | CORE_ADDR *, CORE_ADDR *, | |
1520 | struct dwarf2_cu *, | |
891813be | 1521 | dwarf2_psymtab *); |
c906108c | 1522 | |
fae299cd DC |
1523 | static void get_scope_pc_bounds (struct die_info *, |
1524 | CORE_ADDR *, CORE_ADDR *, | |
1525 | struct dwarf2_cu *); | |
1526 | ||
801e3a5b | 1527 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1528 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1529 | |
a14ed312 | 1530 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1531 | struct dwarf2_cu *); |
c906108c | 1532 | |
a14ed312 | 1533 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1534 | struct type *, struct dwarf2_cu *); |
c906108c | 1535 | |
a14ed312 | 1536 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1537 | struct die_info *, struct type *, |
e7c27a73 | 1538 | struct dwarf2_cu *); |
c906108c | 1539 | |
a14ed312 | 1540 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1541 | struct type *, |
1542 | struct dwarf2_cu *); | |
c906108c | 1543 | |
134d01f1 | 1544 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1545 | |
e7c27a73 | 1546 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1547 | |
e7c27a73 | 1548 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1549 | |
5d7cb8df JK |
1550 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1551 | ||
804d2729 | 1552 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1553 | |
27aa8d6a SW |
1554 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1555 | ||
74921315 KS |
1556 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1557 | ||
f55ee35c JK |
1558 | static struct type *read_module_type (struct die_info *die, |
1559 | struct dwarf2_cu *cu); | |
1560 | ||
38d518c9 | 1561 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1562 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1563 | |
134d01f1 | 1564 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1565 | |
7d79de9a TT |
1566 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1567 | bool * = nullptr); | |
c906108c | 1568 | |
6e70227d | 1569 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1570 | struct dwarf2_cu *); |
1571 | ||
bf6af496 | 1572 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1573 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1574 | struct die_info *); |
639d11d3 | 1575 | |
dee91e82 | 1576 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1577 | const gdb_byte *info_ptr, |
1578 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1579 | struct die_info *parent); |
1580 | ||
d521ce57 TT |
1581 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1582 | struct die_info **, const gdb_byte *, | |
3e225074 | 1583 | int); |
3019eac3 | 1584 | |
d521ce57 | 1585 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1586 | struct die_info **, const gdb_byte *); |
93311388 | 1587 | |
e7c27a73 | 1588 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1589 | |
15d034d0 | 1590 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1591 | struct objfile *); |
71c25dea | 1592 | |
15d034d0 | 1593 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1594 | |
15d034d0 | 1595 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1596 | struct die_info *die, |
1597 | struct dwarf2_cu *cu); | |
1598 | ||
ca69b9e6 DE |
1599 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1600 | struct dwarf2_cu *cu); | |
1601 | ||
e142c38c | 1602 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1603 | struct dwarf2_cu **); |
9219021c | 1604 | |
d97bc12b DE |
1605 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1606 | ||
1607 | static void dump_die_for_error (struct die_info *); | |
1608 | ||
1609 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1610 | struct die_info *); | |
c906108c | 1611 | |
d97bc12b | 1612 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1613 | |
51545339 | 1614 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1615 | struct dwarf2_cu *); |
c906108c | 1616 | |
348e048f | 1617 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1618 | const struct attribute *, |
348e048f DE |
1619 | struct dwarf2_cu **); |
1620 | ||
10b3939b | 1621 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1622 | const struct attribute *, |
f2f0e013 | 1623 | struct dwarf2_cu **); |
c906108c | 1624 | |
348e048f | 1625 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1626 | const struct attribute *, |
348e048f DE |
1627 | struct dwarf2_cu **); |
1628 | ||
ac9ec31b DE |
1629 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1630 | struct dwarf2_cu *); | |
1631 | ||
1632 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1633 | const struct attribute *, |
ac9ec31b DE |
1634 | struct dwarf2_cu *); |
1635 | ||
ab432490 SM |
1636 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1637 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1638 | |
ab432490 SM |
1639 | static void read_signatured_type (signatured_type *sig_type, |
1640 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1641 | |
63e43d3a PMR |
1642 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1643 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1644 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1645 | |
c906108c SS |
1646 | /* memory allocation interface */ |
1647 | ||
7b5a2f43 | 1648 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1649 | |
b60c80d6 | 1650 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1651 | |
43f3e411 | 1652 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1653 | |
8cf6f0b1 TT |
1654 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1655 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1656 | const struct attribute *attr); |
8cf6f0b1 | 1657 | |
ff39bb5e | 1658 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1659 | struct symbol *sym, |
f1e6e072 TT |
1660 | struct dwarf2_cu *cu, |
1661 | int is_block); | |
4c2df51b | 1662 | |
d521ce57 TT |
1663 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1664 | const gdb_byte *info_ptr, | |
7c32eebb | 1665 | const struct abbrev_info *abbrev); |
4bb7a0a7 | 1666 | |
72bf9492 DJ |
1667 | static hashval_t partial_die_hash (const void *item); |
1668 | ||
1669 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1670 | ||
ae038cb0 | 1671 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1672 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1673 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1674 | |
9816fde3 | 1675 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1676 | struct die_info *comp_unit_die, |
1677 | enum language pretend_language); | |
93311388 | 1678 | |
f792889a | 1679 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1680 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1681 | |
976ca316 | 1682 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1683 | |
ab432490 SM |
1684 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1685 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1686 | dwarf2_cu *existing_cu, |
ab432490 SM |
1687 | bool skip_partial, |
1688 | enum language pretend_language); | |
10b3939b | 1689 | |
8fc0b21d | 1690 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1691 | enum language pretend_language); |
10b3939b | 1692 | |
8fc0b21d | 1693 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1694 | enum language pretend_language); |
f4dc4d17 | 1695 | |
10b3939b DJ |
1696 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1697 | struct dwarf2_per_cu_data *); | |
1698 | ||
ae038cb0 DJ |
1699 | static void dwarf2_mark (struct dwarf2_cu *); |
1700 | ||
b64f50a1 | 1701 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1702 | dwarf2_per_cu_data *per_cu, |
1703 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1704 | |
f792889a | 1705 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1706 | |
120ce1b5 SM |
1707 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1708 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1709 | enum language pretend_language); |
1710 | ||
976ca316 | 1711 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1712 | |
b303c6f6 AB |
1713 | /* Class, the destructor of which frees all allocated queue entries. This |
1714 | will only have work to do if an error was thrown while processing the | |
1715 | dwarf. If no error was thrown then the queue entries should have all | |
1716 | been processed, and freed, as we went along. */ | |
1717 | ||
1718 | class dwarf2_queue_guard | |
1719 | { | |
1720 | public: | |
39856def TT |
1721 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1722 | : m_per_objfile (per_objfile) | |
1723 | { | |
08ac5771 SM |
1724 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1725 | ||
1726 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1727 | } |
b303c6f6 AB |
1728 | |
1729 | /* Free any entries remaining on the queue. There should only be | |
1730 | entries left if we hit an error while processing the dwarf. */ | |
1731 | ~dwarf2_queue_guard () | |
1732 | { | |
08ac5771 SM |
1733 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1734 | ||
1735 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1736 | } |
b303c6f6 | 1737 | |
39856def | 1738 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1739 | |
39856def TT |
1740 | private: |
1741 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1742 | }; |
1743 | ||
39856def TT |
1744 | dwarf2_queue_item::~dwarf2_queue_item () |
1745 | { | |
1746 | /* Anything still marked queued is likely to be in an | |
1747 | inconsistent state, so discard it. */ | |
1748 | if (per_cu->queued) | |
1749 | { | |
7188ed02 | 1750 | per_objfile->remove_cu (per_cu); |
39856def TT |
1751 | per_cu->queued = 0; |
1752 | } | |
1753 | } | |
1754 | ||
d721ba37 PA |
1755 | /* The return type of find_file_and_directory. Note, the enclosed |
1756 | string pointers are only valid while this object is valid. */ | |
1757 | ||
1758 | struct file_and_directory | |
1759 | { | |
1760 | /* The filename. This is never NULL. */ | |
1761 | const char *name; | |
1762 | ||
1763 | /* The compilation directory. NULL if not known. If we needed to | |
1764 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1765 | points directly to the DW_AT_comp_dir string attribute owned by | |
1766 | the obstack that owns the DIE. */ | |
1767 | const char *comp_dir; | |
1768 | ||
1769 | /* If we needed to build a new string for comp_dir, this is what | |
1770 | owns the storage. */ | |
1771 | std::string comp_dir_storage; | |
1772 | }; | |
1773 | ||
1774 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1775 | struct dwarf2_cu *cu); | |
9291a0cd | 1776 | |
298e9637 | 1777 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1778 | |
298e9637 | 1779 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1780 | |
57d63ce2 | 1781 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1782 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1783 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1784 | |
976ca316 | 1785 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1786 | |
3019eac3 | 1787 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1788 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1789 | ULONGEST signature); | |
3019eac3 DE |
1790 | |
1791 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1792 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1793 | |
1b555f17 | 1794 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1795 | |
263db9a1 TT |
1796 | /* A unique pointer to a dwo_file. */ |
1797 | ||
51ac9db5 | 1798 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1799 | |
976ca316 | 1800 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1801 | |
1b80a9fa | 1802 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1803 | |
1804 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1805 | \f |
1806 | /* Various complaints about symbol reading that don't abort the process. */ | |
1807 | ||
4390d890 DE |
1808 | static void |
1809 | dwarf2_debug_line_missing_file_complaint (void) | |
1810 | { | |
b98664d3 | 1811 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1812 | } |
1813 | ||
1814 | static void | |
1815 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1816 | { | |
b98664d3 | 1817 | complaint (_(".debug_line section has line " |
4390d890 DE |
1818 | "program sequence without an end")); |
1819 | } | |
1820 | ||
1821 | static void | |
1822 | dwarf2_complex_location_expr_complaint (void) | |
1823 | { | |
b98664d3 | 1824 | complaint (_("location expression too complex")); |
4390d890 DE |
1825 | } |
1826 | ||
1827 | static void | |
1828 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1829 | int arg3) | |
1830 | { | |
b98664d3 | 1831 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1832 | arg1, arg2, arg3); |
1833 | } | |
1834 | ||
4390d890 DE |
1835 | static void |
1836 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1837 | { | |
b98664d3 | 1838 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1839 | arg1, arg2); |
1840 | } | |
527f3840 JK |
1841 | |
1842 | /* Hash function for line_header_hash. */ | |
1843 | ||
1844 | static hashval_t | |
1845 | line_header_hash (const struct line_header *ofs) | |
1846 | { | |
9c541725 | 1847 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1848 | } |
1849 | ||
1850 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1851 | ||
1852 | static hashval_t | |
1853 | line_header_hash_voidp (const void *item) | |
1854 | { | |
9a3c8263 | 1855 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1856 | |
1857 | return line_header_hash (ofs); | |
1858 | } | |
1859 | ||
1860 | /* Equality function for line_header_hash. */ | |
1861 | ||
1862 | static int | |
1863 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1864 | { | |
9a3c8263 SM |
1865 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1866 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1867 | |
9c541725 | 1868 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1869 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1870 | } | |
1871 | ||
4390d890 | 1872 | \f |
9291a0cd | 1873 | |
330cdd98 PA |
1874 | /* See declaration. */ |
1875 | ||
5989a64e SM |
1876 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1877 | bool can_copy_) | |
c3699833 SM |
1878 | : obfd (obfd), |
1879 | can_copy (can_copy_) | |
330cdd98 PA |
1880 | { |
1881 | if (names == NULL) | |
1882 | names = &dwarf2_elf_names; | |
1883 | ||
330cdd98 PA |
1884 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1885 | locate_sections (obfd, sec, *names); | |
1886 | } | |
1887 | ||
5989a64e | 1888 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1889 | { |
0d305d5c | 1890 | for (auto &per_cu : all_comp_units) |
ae640021 | 1891 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1892 | |
5989a64e | 1893 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1894 | } |
1895 | ||
7188ed02 | 1896 | /* See read.h. */ |
330cdd98 PA |
1897 | |
1898 | void | |
7188ed02 | 1899 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1900 | { |
08ac5771 SM |
1901 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1902 | ||
7188ed02 SM |
1903 | for (auto pair : m_dwarf2_cus) |
1904 | delete pair.second; | |
330cdd98 | 1905 | |
7188ed02 | 1906 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1907 | } |
1908 | ||
11ed8cad TT |
1909 | /* A helper class that calls free_cached_comp_units on |
1910 | destruction. */ | |
1911 | ||
1912 | class free_cached_comp_units | |
1913 | { | |
1914 | public: | |
1915 | ||
1916 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1917 | : m_per_objfile (per_objfile) | |
1918 | { | |
1919 | } | |
1920 | ||
1921 | ~free_cached_comp_units () | |
1922 | { | |
7188ed02 | 1923 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1924 | } |
1925 | ||
1926 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1927 | ||
1928 | private: | |
1929 | ||
1930 | dwarf2_per_objfile *m_per_objfile; | |
1931 | }; | |
1932 | ||
af758d11 SM |
1933 | /* See read.h. */ |
1934 | ||
1935 | bool | |
1936 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1937 | { | |
1938 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1939 | ||
1940 | return this->m_symtabs[per_cu->index] != nullptr; | |
1941 | } | |
1942 | ||
1943 | /* See read.h. */ | |
1944 | ||
1945 | compunit_symtab * | |
1946 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1947 | { | |
1948 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1949 | ||
1950 | return this->m_symtabs[per_cu->index]; | |
1951 | } | |
1952 | ||
1953 | /* See read.h. */ | |
1954 | ||
1955 | void | |
1956 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1957 | compunit_symtab *symtab) | |
1958 | { | |
1959 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1960 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1961 | ||
1962 | this->m_symtabs[per_cu->index] = symtab; | |
1963 | } | |
1964 | ||
c906108c | 1965 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1966 | information and return true if we have enough to do something. |
1967 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1968 | ELF names are used. CAN_COPY is true for formats where symbol |
1969 | interposition is possible and so symbol values must follow copy | |
1970 | relocation rules. */ | |
c906108c SS |
1971 | |
1972 | int | |
251d32d9 | 1973 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1974 | const struct dwarf2_debug_sections *names, |
4b610737 | 1975 | bool can_copy) |
c906108c | 1976 | { |
97cbe998 SDJ |
1977 | if (objfile->flags & OBJF_READNEVER) |
1978 | return 0; | |
1979 | ||
976ca316 | 1980 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1981 | |
976ca316 | 1982 | if (per_objfile == NULL) |
5989a64e | 1983 | { |
17ee85fc TT |
1984 | dwarf2_per_bfd *per_bfd; |
1985 | ||
8a91fbdf SM |
1986 | /* We can share a "dwarf2_per_bfd" with other objfiles if the |
1987 | BFD doesn't require relocations. | |
1988 | ||
1989 | We don't share with objfiles for which -readnow was requested, | |
1990 | because it would complicate things when loading the same BFD with | |
1991 | -readnow and then without -readnow. */ | |
1992 | if (!gdb_bfd_requires_relocations (objfile->obfd) | |
1993 | && (objfile->flags & OBJF_READNOW) == 0) | |
17ee85fc TT |
1994 | { |
1995 | /* See if one has been created for this BFD yet. */ | |
1996 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1997 | ||
1998 | if (per_bfd == nullptr) | |
1999 | { | |
2000 | /* No, create it now. */ | |
2001 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2002 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
2003 | } | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | /* No sharing possible, create one specifically for this objfile. */ | |
2008 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
2009 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
2010 | } | |
5989a64e | 2011 | |
976ca316 | 2012 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 2013 | } |
5bfd760d | 2014 | |
976ca316 SM |
2015 | return (!per_objfile->per_bfd->info.is_virtual |
2016 | && per_objfile->per_bfd->info.s.section != NULL | |
2017 | && !per_objfile->per_bfd->abbrev.is_virtual | |
2018 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
2019 | } |
2020 | ||
330cdd98 | 2021 | /* See declaration. */ |
c906108c | 2022 | |
330cdd98 | 2023 | void |
5989a64e SM |
2024 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
2025 | const dwarf2_debug_sections &names) | |
c906108c | 2026 | { |
fd361982 | 2027 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2028 | |
dc7650b8 JK |
2029 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2030 | { | |
2031 | } | |
950b7495 KS |
2032 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2033 | > bfd_get_file_size (abfd)) | |
2034 | { | |
2035 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2036 | warning (_("Discarding section %s which has a section size (%s" | |
2037 | ") larger than the file size [in module %s]"), | |
2038 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2039 | bfd_get_filename (abfd)); | |
2040 | } | |
fbedd546 | 2041 | else if (names.info.matches (sectp->name)) |
c906108c | 2042 | { |
330cdd98 | 2043 | this->info.s.section = sectp; |
fd361982 | 2044 | this->info.size = bfd_section_size (sectp); |
c906108c | 2045 | } |
fbedd546 | 2046 | else if (names.abbrev.matches (sectp->name)) |
c906108c | 2047 | { |
330cdd98 | 2048 | this->abbrev.s.section = sectp; |
fd361982 | 2049 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2050 | } |
fbedd546 | 2051 | else if (names.line.matches (sectp->name)) |
c906108c | 2052 | { |
330cdd98 | 2053 | this->line.s.section = sectp; |
fd361982 | 2054 | this->line.size = bfd_section_size (sectp); |
c906108c | 2055 | } |
fbedd546 | 2056 | else if (names.loc.matches (sectp->name)) |
c906108c | 2057 | { |
330cdd98 | 2058 | this->loc.s.section = sectp; |
fd361982 | 2059 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2060 | } |
fbedd546 | 2061 | else if (names.loclists.matches (sectp->name)) |
43988095 | 2062 | { |
330cdd98 | 2063 | this->loclists.s.section = sectp; |
fd361982 | 2064 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2065 | } |
fbedd546 | 2066 | else if (names.macinfo.matches (sectp->name)) |
c906108c | 2067 | { |
330cdd98 | 2068 | this->macinfo.s.section = sectp; |
fd361982 | 2069 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2070 | } |
fbedd546 | 2071 | else if (names.macro.matches (sectp->name)) |
cf2c3c16 | 2072 | { |
330cdd98 | 2073 | this->macro.s.section = sectp; |
fd361982 | 2074 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2075 | } |
fbedd546 | 2076 | else if (names.str.matches (sectp->name)) |
c906108c | 2077 | { |
330cdd98 | 2078 | this->str.s.section = sectp; |
fd361982 | 2079 | this->str.size = bfd_section_size (sectp); |
c906108c | 2080 | } |
fbedd546 | 2081 | else if (names.str_offsets.matches (sectp->name)) |
18a8505e AT |
2082 | { |
2083 | this->str_offsets.s.section = sectp; | |
2084 | this->str_offsets.size = bfd_section_size (sectp); | |
2085 | } | |
fbedd546 | 2086 | else if (names.line_str.matches (sectp->name)) |
43988095 | 2087 | { |
330cdd98 | 2088 | this->line_str.s.section = sectp; |
fd361982 | 2089 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2090 | } |
fbedd546 | 2091 | else if (names.addr.matches (sectp->name)) |
3019eac3 | 2092 | { |
330cdd98 | 2093 | this->addr.s.section = sectp; |
fd361982 | 2094 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2095 | } |
fbedd546 | 2096 | else if (names.frame.matches (sectp->name)) |
b6af0555 | 2097 | { |
330cdd98 | 2098 | this->frame.s.section = sectp; |
fd361982 | 2099 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2100 | } |
fbedd546 | 2101 | else if (names.eh_frame.matches (sectp->name)) |
b6af0555 | 2102 | { |
330cdd98 | 2103 | this->eh_frame.s.section = sectp; |
fd361982 | 2104 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2105 | } |
fbedd546 | 2106 | else if (names.ranges.matches (sectp->name)) |
af34e669 | 2107 | { |
330cdd98 | 2108 | this->ranges.s.section = sectp; |
fd361982 | 2109 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2110 | } |
fbedd546 | 2111 | else if (names.rnglists.matches (sectp->name)) |
43988095 | 2112 | { |
330cdd98 | 2113 | this->rnglists.s.section = sectp; |
fd361982 | 2114 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2115 | } |
fbedd546 | 2116 | else if (names.types.matches (sectp->name)) |
348e048f | 2117 | { |
8b70b953 TT |
2118 | struct dwarf2_section_info type_section; |
2119 | ||
2120 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2121 | type_section.s.section = sectp; |
fd361982 | 2122 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2123 | |
fd5866f6 | 2124 | this->types.push_back (type_section); |
348e048f | 2125 | } |
fbedd546 | 2126 | else if (names.gdb_index.matches (sectp->name)) |
9291a0cd | 2127 | { |
330cdd98 | 2128 | this->gdb_index.s.section = sectp; |
fd361982 | 2129 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2130 | } |
fbedd546 | 2131 | else if (names.debug_names.matches (sectp->name)) |
927aa2e7 JK |
2132 | { |
2133 | this->debug_names.s.section = sectp; | |
fd361982 | 2134 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2135 | } |
fbedd546 | 2136 | else if (names.debug_aranges.matches (sectp->name)) |
927aa2e7 JK |
2137 | { |
2138 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2139 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2140 | } |
dce234bc | 2141 | |
fd361982 AM |
2142 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2143 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2144 | this->has_section_at_zero = true; |
c906108c SS |
2145 | } |
2146 | ||
dce234bc | 2147 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2148 | SECTION_NAME. */ |
af34e669 | 2149 | |
dce234bc | 2150 | void |
3017a003 | 2151 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2152 | enum dwarf2_section_enum sect, |
2153 | asection **sectp, const gdb_byte **bufp, | |
2154 | bfd_size_type *sizep) | |
dce234bc | 2155 | { |
976ca316 | 2156 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2157 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2158 | |
2159 | /* We may see an objfile without any DWARF, in which case we just | |
2160 | return nothing. */ | |
976ca316 | 2161 | if (per_objfile == NULL) |
a3b2a86b TT |
2162 | { |
2163 | *sectp = NULL; | |
2164 | *bufp = NULL; | |
2165 | *sizep = 0; | |
2166 | return; | |
2167 | } | |
3017a003 TG |
2168 | switch (sect) |
2169 | { | |
2170 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2171 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2172 | break; |
2173 | case DWARF2_EH_FRAME: | |
976ca316 | 2174 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2175 | break; |
2176 | default: | |
2177 | gdb_assert_not_reached ("unexpected section"); | |
2178 | } | |
dce234bc | 2179 | |
96b79293 | 2180 | info->read (objfile); |
dce234bc | 2181 | |
96b79293 | 2182 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2183 | *bufp = info->buffer; |
2184 | *sizep = info->size; | |
2185 | } | |
2186 | ||
9291a0cd | 2187 | \f |
39298a5d | 2188 | /* DWARF quick_symbol_functions support. */ |
7b9f3c50 DE |
2189 | |
2190 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2191 | unique line tables, so we maintain a separate table of all .debug_line | |
2192 | derived entries to support the sharing. | |
2193 | All the quick functions need is the list of file names. We discard the | |
2194 | line_header when we're done and don't need to record it here. */ | |
2195 | struct quick_file_names | |
2196 | { | |
094b34ac DE |
2197 | /* The data used to construct the hash key. */ |
2198 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2199 | |
2200 | /* The number of entries in file_names, real_names. */ | |
2201 | unsigned int num_file_names; | |
2202 | ||
2203 | /* The file names from the line table, after being run through | |
2204 | file_full_name. */ | |
2205 | const char **file_names; | |
2206 | ||
2207 | /* The file names from the line table after being run through | |
2208 | gdb_realpath. These are computed lazily. */ | |
2209 | const char **real_names; | |
2210 | }; | |
2211 | ||
2212 | /* When using the index (and thus not using psymtabs), each CU has an | |
2213 | object of this type. This is used to hold information needed by | |
2214 | the various "quick" methods. */ | |
2215 | struct dwarf2_per_cu_quick_data | |
2216 | { | |
2217 | /* The file table. This can be NULL if there was no file table | |
2218 | or it's currently not read in. | |
5989a64e | 2219 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2220 | struct quick_file_names *file_names; |
2221 | ||
7b9f3c50 DE |
2222 | /* A temporary mark bit used when iterating over all CUs in |
2223 | expand_symtabs_matching. */ | |
2224 | unsigned int mark : 1; | |
2225 | ||
2226 | /* True if we've tried to read the file table and found there isn't one. | |
2227 | There will be no point in trying to read it again next time. */ | |
2228 | unsigned int no_file_data : 1; | |
2229 | }; | |
2230 | ||
edc02ceb TT |
2231 | /* A subclass of psymbol_functions that arranges to read the DWARF |
2232 | partial symbols when needed. */ | |
2233 | struct lazy_dwarf_reader : public psymbol_functions | |
2234 | { | |
2235 | using psymbol_functions::psymbol_functions; | |
2236 | ||
2237 | bool can_lazily_read_symbols () override | |
2238 | { | |
2239 | return true; | |
2240 | } | |
2241 | ||
2242 | void read_partial_symbols (struct objfile *objfile) override | |
2243 | { | |
2244 | if (dwarf2_has_info (objfile, nullptr)) | |
2245 | dwarf2_build_psymtabs (objfile, this); | |
2246 | } | |
2247 | }; | |
2248 | ||
2249 | static quick_symbol_functions_up | |
2250 | make_lazy_dwarf_reader () | |
2251 | { | |
2252 | return quick_symbol_functions_up (new lazy_dwarf_reader); | |
2253 | } | |
2254 | ||
39298a5d TT |
2255 | struct dwarf2_base_index_functions : public quick_symbol_functions |
2256 | { | |
2257 | bool has_symbols (struct objfile *objfile) override; | |
2258 | ||
2259 | struct symtab *find_last_source_symtab (struct objfile *objfile) override; | |
2260 | ||
2261 | void forget_cached_source_info (struct objfile *objfile) override; | |
2262 | ||
39298a5d TT |
2263 | enum language lookup_global_symbol_language (struct objfile *objfile, |
2264 | const char *name, | |
2265 | domain_enum domain, | |
2266 | bool *symbol_found_p) override | |
2267 | { | |
2268 | *symbol_found_p = false; | |
2269 | return language_unknown; | |
2270 | } | |
2271 | ||
4829711b | 2272 | void print_stats (struct objfile *objfile, bool print_bcache) override; |
39298a5d TT |
2273 | |
2274 | void expand_all_symtabs (struct objfile *objfile) override; | |
2275 | ||
39298a5d TT |
2276 | struct compunit_symtab *find_pc_sect_compunit_symtab |
2277 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
2278 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin) override; | |
2279 | ||
2280 | struct compunit_symtab *find_compunit_symtab_by_address | |
2281 | (struct objfile *objfile, CORE_ADDR address) override | |
2282 | { | |
2283 | return nullptr; | |
2284 | } | |
2285 | ||
2286 | void map_symbol_filenames (struct objfile *objfile, | |
f4655dee TT |
2287 | gdb::function_view<symbol_filename_ftype> fun, |
2288 | bool need_fullname) override; | |
39298a5d TT |
2289 | }; |
2290 | ||
2291 | struct dwarf2_gdb_index : public dwarf2_base_index_functions | |
2292 | { | |
39298a5d TT |
2293 | void dump (struct objfile *objfile) override; |
2294 | ||
0b7b2c2a | 2295 | void expand_matching_symbols |
39298a5d TT |
2296 | (struct objfile *, |
2297 | const lookup_name_info &lookup_name, | |
2298 | domain_enum domain, | |
2299 | int global, | |
39298a5d TT |
2300 | symbol_compare_ftype *ordered_compare) override; |
2301 | ||
df35e626 | 2302 | bool expand_symtabs_matching |
39298a5d TT |
2303 | (struct objfile *objfile, |
2304 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2305 | const lookup_name_info *lookup_name, | |
2306 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2307 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2308 | block_search_flags search_flags, |
3bfa51a7 | 2309 | domain_enum domain, |
39298a5d TT |
2310 | enum search_domain kind) override; |
2311 | }; | |
2312 | ||
2313 | struct dwarf2_debug_names_index : public dwarf2_base_index_functions | |
2314 | { | |
39298a5d TT |
2315 | void dump (struct objfile *objfile) override; |
2316 | ||
0b7b2c2a | 2317 | void expand_matching_symbols |
39298a5d TT |
2318 | (struct objfile *, |
2319 | const lookup_name_info &lookup_name, | |
2320 | domain_enum domain, | |
2321 | int global, | |
39298a5d TT |
2322 | symbol_compare_ftype *ordered_compare) override; |
2323 | ||
df35e626 | 2324 | bool expand_symtabs_matching |
39298a5d TT |
2325 | (struct objfile *objfile, |
2326 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2327 | const lookup_name_info *lookup_name, | |
2328 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2329 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 2330 | block_search_flags search_flags, |
3bfa51a7 | 2331 | domain_enum domain, |
39298a5d TT |
2332 | enum search_domain kind) override; |
2333 | }; | |
2334 | ||
edc02ceb | 2335 | static quick_symbol_functions_up |
39298a5d TT |
2336 | make_dwarf_gdb_index () |
2337 | { | |
2338 | return quick_symbol_functions_up (new dwarf2_gdb_index); | |
2339 | } | |
2340 | ||
edc02ceb | 2341 | static quick_symbol_functions_up |
39298a5d TT |
2342 | make_dwarf_debug_names () |
2343 | { | |
2344 | return quick_symbol_functions_up (new dwarf2_debug_names_index); | |
2345 | } | |
2346 | ||
094b34ac DE |
2347 | /* Utility hash function for a stmt_list_hash. */ |
2348 | ||
2349 | static hashval_t | |
2350 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2351 | { | |
2352 | hashval_t v = 0; | |
2353 | ||
2354 | if (stmt_list_hash->dwo_unit != NULL) | |
2355 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2356 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2357 | return v; |
2358 | } | |
2359 | ||
2360 | /* Utility equality function for a stmt_list_hash. */ | |
2361 | ||
2362 | static int | |
2363 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2364 | const struct stmt_list_hash *rhs) | |
2365 | { | |
2366 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2367 | return 0; | |
2368 | if (lhs->dwo_unit != NULL | |
2369 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2370 | return 0; | |
2371 | ||
9c541725 | 2372 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2373 | } |
2374 | ||
7b9f3c50 DE |
2375 | /* Hash function for a quick_file_names. */ |
2376 | ||
2377 | static hashval_t | |
2378 | hash_file_name_entry (const void *e) | |
2379 | { | |
9a3c8263 SM |
2380 | const struct quick_file_names *file_data |
2381 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2382 | |
094b34ac | 2383 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2384 | } |
2385 | ||
2386 | /* Equality function for a quick_file_names. */ | |
2387 | ||
2388 | static int | |
2389 | eq_file_name_entry (const void *a, const void *b) | |
2390 | { | |
9a3c8263 SM |
2391 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2392 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2393 | |
094b34ac | 2394 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2395 | } |
2396 | ||
2397 | /* Delete function for a quick_file_names. */ | |
2398 | ||
2399 | static void | |
2400 | delete_file_name_entry (void *e) | |
2401 | { | |
9a3c8263 | 2402 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2403 | int i; |
2404 | ||
2405 | for (i = 0; i < file_data->num_file_names; ++i) | |
2406 | { | |
2407 | xfree ((void*) file_data->file_names[i]); | |
2408 | if (file_data->real_names) | |
2409 | xfree ((void*) file_data->real_names[i]); | |
2410 | } | |
2411 | ||
45940949 TT |
2412 | /* The space for the struct itself lives on the obstack, so we don't |
2413 | free it here. */ | |
7b9f3c50 DE |
2414 | } |
2415 | ||
2416 | /* Create a quick_file_names hash table. */ | |
2417 | ||
5895093f | 2418 | static htab_up |
7b9f3c50 DE |
2419 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2420 | { | |
5895093f TT |
2421 | return htab_up (htab_create_alloc (nr_initial_entries, |
2422 | hash_file_name_entry, eq_file_name_entry, | |
2423 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2424 | } |
9291a0cd | 2425 | |
ab432490 SM |
2426 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2427 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2428 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2429 | |
1b555f17 | 2430 | static dwarf2_cu * |
ab432490 SM |
2431 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2432 | bool skip_partial) | |
918dd910 | 2433 | { |
3019eac3 | 2434 | if (per_cu->is_debug_types) |
ab432490 | 2435 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2436 | else |
4a636814 SM |
2437 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2438 | skip_partial, language_minimal); | |
918dd910 | 2439 | |
7188ed02 SM |
2440 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2441 | if (cu == nullptr) | |
1b555f17 | 2442 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2443 | |
7188ed02 | 2444 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2445 | |
7188ed02 | 2446 | return cu; |
918dd910 JK |
2447 | } |
2448 | ||
1350c3b4 | 2449 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2450 | |
9291a0cd | 2451 | static void |
97a1449a | 2452 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2453 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2454 | { |
f4dc4d17 DE |
2455 | /* Skip type_unit_groups, reading the type units they contain |
2456 | is handled elsewhere. */ | |
197400e8 | 2457 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2458 | return; |
2459 | ||
08ac5771 SM |
2460 | { |
2461 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2462 | the queue. After this point we're guaranteed to leave this function | |
2463 | with the dwarf queue empty. */ | |
2464 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2465 | |
08ac5771 SM |
2466 | if (!per_objfile->symtab_set_p (per_cu)) |
2467 | { | |
2468 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2469 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2470 | ||
2471 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2472 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2473 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2474 | if (!per_cu->is_debug_types | |
2475 | && cu != NULL | |
2476 | && cu->dwo_unit != NULL | |
2477 | && per_objfile->per_bfd->index_table != NULL | |
2478 | && per_objfile->per_bfd->index_table->version <= 7 | |
2479 | /* DWP files aren't supported yet. */ | |
2480 | && get_dwp_file (per_objfile) == NULL) | |
2481 | queue_and_load_all_dwo_tus (cu); | |
2482 | } | |
9291a0cd | 2483 | |
08ac5771 SM |
2484 | process_queue (per_objfile); |
2485 | } | |
9291a0cd TT |
2486 | |
2487 | /* Age the cache, releasing compilation units that have not | |
2488 | been used recently. */ | |
976ca316 | 2489 | per_objfile->age_comp_units (); |
9291a0cd TT |
2490 | } |
2491 | ||
97a1449a SM |
2492 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2493 | the per-objfile for which this symtab is instantiated. | |
2494 | ||
2495 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2496 | |
43f3e411 | 2497 | static struct compunit_symtab * |
97a1449a | 2498 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2499 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2500 | bool skip_partial) |
9291a0cd | 2501 | { |
976ca316 | 2502 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2503 | |
976ca316 | 2504 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2505 | { |
976ca316 | 2506 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2507 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2508 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2509 | process_cu_includes (per_objfile); | |
9291a0cd | 2510 | } |
f194fefb | 2511 | |
976ca316 | 2512 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2513 | } |
2514 | ||
d3473f0c TT |
2515 | /* See read.h. */ |
2516 | ||
0d305d5c | 2517 | std::unique_ptr<dwarf2_per_cu_data> |
5989a64e | 2518 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c | 2519 | { |
0d305d5c | 2520 | std::unique_ptr<dwarf2_per_cu_data> result (new dwarf2_per_cu_data); |
1859c670 | 2521 | result->per_bfd = this; |
d3473f0c TT |
2522 | result->index = m_num_psymtabs++; |
2523 | return result; | |
2524 | } | |
2525 | ||
2526 | /* See read.h. */ | |
2527 | ||
0d305d5c | 2528 | std::unique_ptr<signatured_type> |
5989a64e | 2529 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c | 2530 | { |
0d305d5c TT |
2531 | std::unique_ptr<signatured_type> result (new signatured_type); |
2532 | result->per_bfd = this; | |
2533 | result->index = m_num_psymtabs++; | |
91eea9cc | 2534 | tu_stats.nr_tus++; |
d3473f0c TT |
2535 | return result; |
2536 | } | |
2537 | ||
168c9250 | 2538 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2539 | obstack, and constructed with the specified field values. */ |
4b514bc8 | 2540 | |
0d305d5c | 2541 | static std::unique_ptr<dwarf2_per_cu_data> |
168c9250 SM |
2542 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2543 | struct dwarf2_section_info *section, | |
2544 | int is_dwz, | |
2545 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2546 | { |
0d305d5c | 2547 | std::unique_ptr<dwarf2_per_cu_data> the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2548 | the_cu->sect_off = sect_off; |
2549 | the_cu->length = length; | |
4b514bc8 | 2550 | the_cu->section = section; |
168c9250 | 2551 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2552 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2553 | the_cu->is_dwz = is_dwz; |
2554 | return the_cu; | |
2555 | } | |
2556 | ||
2ec9a5e0 TT |
2557 | /* A helper for create_cus_from_index that handles a given list of |
2558 | CUs. */ | |
2fdf6df6 | 2559 | |
74a0d9f6 | 2560 | static void |
168c9250 | 2561 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2562 | const gdb_byte *cu_list, offset_type n_elements, |
2563 | struct dwarf2_section_info *section, | |
b76e467d | 2564 | int is_dwz) |
9291a0cd | 2565 | { |
12359b5e | 2566 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2567 | { |
74a0d9f6 | 2568 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2569 | |
2570 | sect_offset sect_off | |
2571 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2572 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2573 | cu_list += 2 * 8; |
2574 | ||
0d305d5c | 2575 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
168c9250 SM |
2576 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2577 | length); | |
0d305d5c | 2578 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
9291a0cd | 2579 | } |
9291a0cd TT |
2580 | } |
2581 | ||
2ec9a5e0 | 2582 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2583 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2584 | |
74a0d9f6 | 2585 | static void |
168c9250 | 2586 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2587 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2588 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2589 | { | |
168c9250 SM |
2590 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2591 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2592 | |
168c9250 SM |
2593 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2594 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2595 | |
2596 | if (dwz_elements == 0) | |
74a0d9f6 | 2597 | return; |
2ec9a5e0 | 2598 | |
168c9250 SM |
2599 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2600 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2601 | &dwz->info, 1); |
2ec9a5e0 TT |
2602 | } |
2603 | ||
1fd400ff | 2604 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2605 | |
74a0d9f6 | 2606 | static void |
12359b5e | 2607 | create_signatured_type_table_from_index |
168c9250 SM |
2608 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2609 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2610 | { |
298e9637 | 2611 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2612 | |
12359b5e | 2613 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2614 | { |
0d305d5c | 2615 | std::unique_ptr<signatured_type> sig_type; |
9c541725 | 2616 | ULONGEST signature; |
1fd400ff | 2617 | void **slot; |
9c541725 | 2618 | cu_offset type_offset_in_tu; |
1fd400ff | 2619 | |
74a0d9f6 | 2620 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2621 | sect_offset sect_off |
2622 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2623 | type_offset_in_tu | |
2624 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2625 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2626 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2627 | bytes += 3 * 8; | |
2628 | ||
168c9250 | 2629 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2630 | sig_type->signature = signature; |
9c541725 | 2631 | sig_type->type_offset_in_tu = type_offset_in_tu; |
0d305d5c TT |
2632 | sig_type->is_debug_types = 1; |
2633 | sig_type->section = section; | |
2634 | sig_type->sect_off = sect_off; | |
2635 | sig_type->v.quick | |
168c9250 | 2636 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2637 | struct dwarf2_per_cu_quick_data); |
2638 | ||
0d305d5c TT |
2639 | slot = htab_find_slot (sig_types_hash.get (), sig_type.get (), INSERT); |
2640 | *slot = sig_type.get (); | |
1fd400ff | 2641 | |
91eea9cc | 2642 | per_bfd->all_comp_units.push_back (std::move (sig_type)); |
1fd400ff TT |
2643 | } |
2644 | ||
168c9250 | 2645 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2646 | } |
2647 | ||
927aa2e7 JK |
2648 | /* Create the signatured type hash table from .debug_names. */ |
2649 | ||
2650 | static void | |
2651 | create_signatured_type_table_from_debug_names | |
976ca316 | 2652 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2653 | const mapped_debug_names &map, |
2654 | struct dwarf2_section_info *section, | |
2655 | struct dwarf2_section_info *abbrev_section) | |
2656 | { | |
976ca316 | 2657 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2658 | |
96b79293 TT |
2659 | section->read (objfile); |
2660 | abbrev_section->read (objfile); | |
927aa2e7 | 2661 | |
298e9637 | 2662 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2663 | |
2664 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2665 | { | |
0d305d5c | 2666 | std::unique_ptr<signatured_type> sig_type; |
927aa2e7 | 2667 | void **slot; |
927aa2e7 JK |
2668 | |
2669 | sect_offset sect_off | |
2670 | = (sect_offset) (extract_unsigned_integer | |
2671 | (map.tu_table_reordered + i * map.offset_size, | |
2672 | map.offset_size, | |
2673 | map.dwarf5_byte_order)); | |
2674 | ||
2675 | comp_unit_head cu_header; | |
976ca316 | 2676 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2677 | abbrev_section, |
927aa2e7 JK |
2678 | section->buffer + to_underlying (sect_off), |
2679 | rcuh_kind::TYPE); | |
2680 | ||
976ca316 | 2681 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2682 | sig_type->signature = cu_header.signature; |
2683 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
0d305d5c TT |
2684 | sig_type->is_debug_types = 1; |
2685 | sig_type->section = section; | |
2686 | sig_type->sect_off = sect_off; | |
2687 | sig_type->v.quick | |
976ca316 | 2688 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2689 | struct dwarf2_per_cu_quick_data); |
2690 | ||
0d305d5c TT |
2691 | slot = htab_find_slot (sig_types_hash.get (), sig_type.get (), INSERT); |
2692 | *slot = sig_type.get (); | |
927aa2e7 | 2693 | |
91eea9cc | 2694 | per_objfile->per_bfd->all_comp_units.push_back (std::move (sig_type)); |
927aa2e7 JK |
2695 | } |
2696 | ||
976ca316 | 2697 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2698 | } |
2699 | ||
9291a0cd | 2700 | /* Read the address map data from the mapped index, and use it to |
efd7398e | 2701 | populate the psymtabs_addrmap. */ |
2fdf6df6 | 2702 | |
9291a0cd | 2703 | static void |
976ca316 | 2704 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2705 | struct mapped_index *index) |
9291a0cd | 2706 | { |
976ca316 | 2707 | struct objfile *objfile = per_objfile->objfile; |
efd7398e | 2708 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
08feed99 | 2709 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2710 | const gdb_byte *iter, *end; |
9291a0cd | 2711 | struct addrmap *mutable_map; |
9291a0cd TT |
2712 | CORE_ADDR baseaddr; |
2713 | ||
8268c778 PA |
2714 | auto_obstack temp_obstack; |
2715 | ||
9291a0cd TT |
2716 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2717 | ||
f00a2de2 PA |
2718 | iter = index->address_table.data (); |
2719 | end = iter + index->address_table.size (); | |
9291a0cd | 2720 | |
b3b3bada | 2721 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2722 | |
2723 | while (iter < end) | |
2724 | { | |
2725 | ULONGEST hi, lo, cu_index; | |
2726 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2727 | iter += 8; | |
2728 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2729 | iter += 8; | |
2730 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2731 | iter += 4; | |
f652bce2 | 2732 | |
24a55014 | 2733 | if (lo > hi) |
f652bce2 | 2734 | { |
b98664d3 | 2735 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2736 | hex_string (lo), hex_string (hi)); |
24a55014 | 2737 | continue; |
f652bce2 | 2738 | } |
24a55014 | 2739 | |
efd7398e | 2740 | if (cu_index >= per_bfd->all_comp_units.size ()) |
f652bce2 | 2741 | { |
b98664d3 | 2742 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2743 | (unsigned) cu_index); |
24a55014 | 2744 | continue; |
f652bce2 | 2745 | } |
24a55014 | 2746 | |
79748972 TT |
2747 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2748 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2749 | addrmap_set_empty (mutable_map, lo, hi - 1, |
efd7398e | 2750 | per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2751 | } |
2752 | ||
efd7398e TT |
2753 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2754 | &per_bfd->obstack); | |
9291a0cd TT |
2755 | } |
2756 | ||
927aa2e7 | 2757 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
efd7398e | 2758 | populate the psymtabs_addrmap. */ |
927aa2e7 JK |
2759 | |
2760 | static void | |
976ca316 | 2761 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2762 | struct dwarf2_section_info *section) |
2763 | { | |
976ca316 | 2764 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2765 | bfd *abfd = objfile->obfd; |
08feed99 | 2766 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2767 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e | 2768 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
2769 | |
2770 | auto_obstack temp_obstack; | |
2771 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2772 | ||
2773 | std::unordered_map<sect_offset, | |
2774 | dwarf2_per_cu_data *, | |
2775 | gdb::hash_enum<sect_offset>> | |
2776 | debug_info_offset_to_per_cu; | |
0d305d5c | 2777 | for (const auto &per_cu : per_bfd->all_comp_units) |
927aa2e7 | 2778 | { |
927aa2e7 | 2779 | const auto insertpair |
0d305d5c TT |
2780 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, |
2781 | per_cu.get ()); | |
927aa2e7 JK |
2782 | if (!insertpair.second) |
2783 | { | |
2784 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2785 | "debug_info_offset %s, ignoring .debug_aranges."), |
2786 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2787 | return; |
2788 | } | |
2789 | } | |
2790 | ||
96b79293 | 2791 | section->read (objfile); |
927aa2e7 JK |
2792 | |
2793 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2794 | ||
2795 | const gdb_byte *addr = section->buffer; | |
2796 | ||
2797 | while (addr < section->buffer + section->size) | |
2798 | { | |
2799 | const gdb_byte *const entry_addr = addr; | |
2800 | unsigned int bytes_read; | |
2801 | ||
2802 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2803 | &bytes_read); | |
2804 | addr += bytes_read; | |
2805 | ||
2806 | const gdb_byte *const entry_end = addr + entry_length; | |
2807 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2808 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2809 | if (addr + entry_length > section->buffer + section->size) | |
2810 | { | |
47e3f474 | 2811 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2812 | "length %s exceeds section length %s, " |
927aa2e7 | 2813 | "ignoring .debug_aranges."), |
47e3f474 TV |
2814 | objfile_name (objfile), |
2815 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2816 | plongest (bytes_read + entry_length), |
2817 | pulongest (section->size)); | |
2818 | return; | |
2819 | } | |
2820 | ||
2821 | /* The version number. */ | |
2822 | const uint16_t version = read_2_bytes (abfd, addr); | |
2823 | addr += 2; | |
2824 | if (version != 2) | |
2825 | { | |
47e3f474 | 2826 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2827 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2828 | objfile_name (objfile), |
2829 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2830 | return; |
2831 | } | |
2832 | ||
2833 | const uint64_t debug_info_offset | |
2834 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2835 | addr += offset_size; | |
2836 | const auto per_cu_it | |
2837 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2838 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2839 | { | |
47e3f474 | 2840 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2841 | "debug_info_offset %s does not exists, " |
2842 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2843 | objfile_name (objfile), |
2844 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2845 | pulongest (debug_info_offset)); |
2846 | return; | |
2847 | } | |
2848 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2849 | ||
2850 | const uint8_t address_size = *addr++; | |
2851 | if (address_size < 1 || address_size > 8) | |
2852 | { | |
47e3f474 | 2853 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2854 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2855 | objfile_name (objfile), |
2856 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2857 | return; |
2858 | } | |
2859 | ||
2860 | const uint8_t segment_selector_size = *addr++; | |
2861 | if (segment_selector_size != 0) | |
2862 | { | |
47e3f474 | 2863 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2864 | "segment_selector_size %u is not supported, " |
2865 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2866 | objfile_name (objfile), |
2867 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2868 | segment_selector_size); |
2869 | return; | |
2870 | } | |
2871 | ||
2872 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2873 | size. It is undocumented by the DWARF standard but GCC does |
2874 | use it. */ | |
927aa2e7 JK |
2875 | for (size_t padding = ((-(addr - section->buffer)) |
2876 | & (2 * address_size - 1)); | |
dda83cd7 | 2877 | padding > 0; padding--) |
927aa2e7 JK |
2878 | if (*addr++ != 0) |
2879 | { | |
47e3f474 | 2880 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2881 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2882 | objfile_name (objfile), |
2883 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2884 | return; |
2885 | } | |
2886 | ||
2887 | for (;;) | |
2888 | { | |
2889 | if (addr + 2 * address_size > entry_end) | |
2890 | { | |
47e3f474 | 2891 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2892 | "address list is not properly terminated, " |
2893 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2894 | objfile_name (objfile), |
2895 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2896 | return; |
2897 | } | |
2898 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2899 | dwarf5_byte_order); | |
2900 | addr += address_size; | |
2901 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2902 | dwarf5_byte_order); | |
2903 | addr += address_size; | |
2904 | if (start == 0 && length == 0) | |
2905 | break; | |
efd7398e | 2906 | if (start == 0 && !per_bfd->has_section_at_zero) |
927aa2e7 JK |
2907 | { |
2908 | /* Symbol was eliminated due to a COMDAT group. */ | |
2909 | continue; | |
2910 | } | |
2911 | ULONGEST end = start + length; | |
79748972 TT |
2912 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2913 | - baseaddr); | |
2914 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2915 | - baseaddr); | |
927aa2e7 JK |
2916 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2917 | } | |
2918 | } | |
2919 | ||
efd7398e TT |
2920 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2921 | &per_bfd->obstack); | |
927aa2e7 JK |
2922 | } |
2923 | ||
4485a1c1 SM |
2924 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2925 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2926 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2927 | ok to use deprecated sections. |
2928 | ||
2929 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2930 | out parameters that are filled in with information about the CU and | |
2931 | TU lists in the section. | |
2932 | ||
4485a1c1 | 2933 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2934 | |
d33bc52e | 2935 | static bool |
3810f182 | 2936 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2937 | bool deprecated_ok, |
2938 | gdb::array_view<const gdb_byte> buffer, | |
2939 | struct mapped_index *map, | |
2940 | const gdb_byte **cu_list, | |
2941 | offset_type *cu_list_elements, | |
2942 | const gdb_byte **types_list, | |
2943 | offset_type *types_list_elements) | |
2944 | { | |
2945 | const gdb_byte *addr = &buffer[0]; | |
42c2c694 | 2946 | offset_view metadata (buffer); |
82430852 | 2947 | |
9291a0cd | 2948 | /* Version check. */ |
42c2c694 | 2949 | offset_type version = metadata[0]; |
987d643c | 2950 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2951 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2952 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2953 | indices. */ |
831adc1f | 2954 | if (version < 4) |
481860b3 GB |
2955 | { |
2956 | static int warning_printed = 0; | |
2957 | if (!warning_printed) | |
2958 | { | |
2959 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2960 | filename); |
481860b3 GB |
2961 | warning_printed = 1; |
2962 | } | |
2963 | return 0; | |
2964 | } | |
2965 | /* Index version 4 uses a different hash function than index version | |
2966 | 5 and later. | |
2967 | ||
2968 | Versions earlier than 6 did not emit psymbols for inlined | |
2969 | functions. Using these files will cause GDB not to be able to | |
2970 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2971 | indices unless the user has done |
2972 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2973 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2974 | { |
2975 | static int warning_printed = 0; | |
2976 | if (!warning_printed) | |
2977 | { | |
e615022a DE |
2978 | warning (_("\ |
2979 | Skipping deprecated .gdb_index section in %s.\n\ | |
2980 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2981 | to use the section anyway."), | |
2ec9a5e0 | 2982 | filename); |
481860b3 GB |
2983 | warning_printed = 1; |
2984 | } | |
2985 | return 0; | |
2986 | } | |
796a7ff8 | 2987 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2988 | of the TU (for symbols coming from TUs), |
2989 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2990 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2991 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2992 | These are just performance bugs, and we can't distinguish gdb-generated | |
2993 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2994 | |
481860b3 | 2995 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2996 | longer backward compatible. */ |
796a7ff8 | 2997 | if (version > 8) |
594e8718 | 2998 | return 0; |
9291a0cd | 2999 | |
559a7a62 | 3000 | map->version = version; |
9291a0cd | 3001 | |
42c2c694 TT |
3002 | int i = 1; |
3003 | *cu_list = addr + metadata[i]; | |
3004 | *cu_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
1fd400ff TT |
3005 | ++i; |
3006 | ||
42c2c694 TT |
3007 | *types_list = addr + metadata[i]; |
3008 | *types_list_elements = (metadata[i + 1] - metadata[i]) / 8; | |
987d643c | 3009 | ++i; |
1fd400ff | 3010 | |
42c2c694 TT |
3011 | const gdb_byte *address_table = addr + metadata[i]; |
3012 | const gdb_byte *address_table_end = addr + metadata[i + 1]; | |
f00a2de2 PA |
3013 | map->address_table |
3014 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3015 | ++i; |
3016 | ||
42c2c694 TT |
3017 | const gdb_byte *symbol_table = addr + metadata[i]; |
3018 | const gdb_byte *symbol_table_end = addr + metadata[i + 1]; | |
f00a2de2 | 3019 | map->symbol_table |
42c2c694 TT |
3020 | = offset_view (gdb::array_view<const gdb_byte> (symbol_table, |
3021 | symbol_table_end)); | |
9291a0cd | 3022 | |
f00a2de2 | 3023 | ++i; |
42c2c694 | 3024 | map->constant_pool = buffer.slice (metadata[i]); |
1fd400ff | 3025 | |
2ec9a5e0 TT |
3026 | return 1; |
3027 | } | |
3028 | ||
4485a1c1 SM |
3029 | /* Callback types for dwarf2_read_gdb_index. */ |
3030 | ||
3031 | typedef gdb::function_view | |
5989a64e | 3032 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3033 | get_gdb_index_contents_ftype; |
3034 | typedef gdb::function_view | |
3035 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3036 | get_gdb_index_contents_dwz_ftype; | |
3037 | ||
927aa2e7 | 3038 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3039 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3040 | ||
3041 | static int | |
4485a1c1 | 3042 | dwarf2_read_gdb_index |
976ca316 | 3043 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3044 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3045 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3046 | { |
2ec9a5e0 TT |
3047 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3048 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3049 | struct dwz_file *dwz; |
976ca316 | 3050 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3051 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3052 | |
4485a1c1 | 3053 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3054 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3055 | |
3056 | if (main_index_contents.empty ()) | |
3057 | return 0; | |
3058 | ||
3063847f | 3059 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3060 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3061 | use_deprecated_index_sections, |
3062 | main_index_contents, map.get (), &cu_list, | |
3063 | &cu_list_elements, &types_list, | |
3064 | &types_list_elements)) | |
2ec9a5e0 TT |
3065 | return 0; |
3066 | ||
0fefef59 | 3067 | /* Don't use the index if it's empty. */ |
3063847f | 3068 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3069 | return 0; |
3070 | ||
2ec9a5e0 TT |
3071 | /* If there is a .dwz file, read it so we can get its CU list as |
3072 | well. */ | |
f8c41851 | 3073 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3074 | if (dwz != NULL) |
2ec9a5e0 | 3075 | { |
2ec9a5e0 TT |
3076 | struct mapped_index dwz_map; |
3077 | const gdb_byte *dwz_types_ignore; | |
3078 | offset_type dwz_types_elements_ignore; | |
3079 | ||
4485a1c1 SM |
3080 | gdb::array_view<const gdb_byte> dwz_index_content |
3081 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3082 | ||
3083 | if (dwz_index_content.empty ()) | |
3084 | return 0; | |
3085 | ||
3810f182 | 3086 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3087 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3088 | &dwz_list, &dwz_list_elements, |
3089 | &dwz_types_ignore, | |
3090 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3091 | { |
3092 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3093 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3094 | return 0; |
3095 | } | |
3096 | } | |
3097 | ||
f8c41851 SM |
3098 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3099 | dwz_list_elements); | |
1fd400ff | 3100 | |
8b70b953 TT |
3101 | if (types_list_elements) |
3102 | { | |
8b70b953 TT |
3103 | /* We can only handle a single .debug_types when we have an |
3104 | index. */ | |
f8c41851 | 3105 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3106 | return 0; |
3107 | ||
f8c41851 | 3108 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3109 | |
f8c41851 | 3110 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3111 | types_list_elements); |
8b70b953 | 3112 | } |
9291a0cd | 3113 | |
976ca316 | 3114 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3115 | |
f8c41851 SM |
3116 | per_bfd->index_table = std::move (map); |
3117 | per_bfd->using_index = 1; | |
3118 | per_bfd->quick_file_names_table = | |
3119 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3120 | ||
9291a0cd TT |
3121 | return 1; |
3122 | } | |
3123 | ||
dee91e82 | 3124 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3125 | |
dee91e82 DE |
3126 | static void |
3127 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
3e225074 | 3128 | struct die_info *comp_unit_die) |
9291a0cd | 3129 | { |
dee91e82 | 3130 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3131 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3132 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3133 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3134 | struct attribute *attr; |
7b9f3c50 DE |
3135 | void **slot; |
3136 | struct quick_file_names *qfn; | |
9291a0cd | 3137 | |
0186c6a7 DE |
3138 | gdb_assert (! this_cu->is_debug_types); |
3139 | ||
07261596 TT |
3140 | /* Our callers never want to match partial units -- instead they |
3141 | will match the enclosing full CU. */ | |
3142 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3143 | { | |
3144 | this_cu->v.quick->no_file_data = 1; | |
3145 | return; | |
3146 | } | |
3147 | ||
0186c6a7 | 3148 | lh_cu = this_cu; |
7b9f3c50 | 3149 | slot = NULL; |
dee91e82 | 3150 | |
fff8551c | 3151 | line_header_up lh; |
9c541725 | 3152 | sect_offset line_offset {}; |
fff8551c | 3153 | |
dee91e82 | 3154 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3155 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3156 | { |
7b9f3c50 DE |
3157 | struct quick_file_names find_entry; |
3158 | ||
d4df075e | 3159 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3160 | |
3161 | /* We may have already read in this line header (TU line header sharing). | |
3162 | If we have we're done. */ | |
094b34ac | 3163 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3164 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3165 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3166 | &find_entry, INSERT); |
3167 | if (*slot != NULL) | |
3168 | { | |
9a3c8263 | 3169 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3170 | return; |
7b9f3c50 DE |
3171 | } |
3172 | ||
3019eac3 | 3173 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3174 | } |
3175 | if (lh == NULL) | |
3176 | { | |
094b34ac | 3177 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3178 | return; |
9291a0cd TT |
3179 | } |
3180 | ||
976ca316 | 3181 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3182 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3183 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3184 | gdb_assert (slot != NULL); |
3185 | *slot = qfn; | |
9291a0cd | 3186 | |
d721ba37 | 3187 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3188 | |
aa391654 TT |
3189 | int offset = 0; |
3190 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3191 | ++offset; | |
3192 | ||
7ba99d21 | 3193 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3194 | qfn->file_names = |
976ca316 | 3195 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3196 | qfn->num_file_names); |
aa391654 TT |
3197 | if (offset != 0) |
3198 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3199 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3200 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3201 | fnd.comp_dir).release (); | |
7b9f3c50 | 3202 | qfn->real_names = NULL; |
9291a0cd | 3203 | |
094b34ac | 3204 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3205 | } |
3206 | ||
3207 | /* A helper for the "quick" functions which attempts to read the line | |
3208 | table for THIS_CU. */ | |
3209 | ||
3210 | static struct quick_file_names * | |
ab432490 SM |
3211 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3212 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3213 | { |
0186c6a7 DE |
3214 | /* This should never be called for TUs. */ |
3215 | gdb_assert (! this_cu->is_debug_types); | |
3216 | /* Nor type unit groups. */ | |
197400e8 | 3217 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3218 | |
dee91e82 DE |
3219 | if (this_cu->v.quick->file_names != NULL) |
3220 | return this_cu->v.quick->file_names; | |
3221 | /* If we know there is no line data, no point in looking again. */ | |
3222 | if (this_cu->v.quick->no_file_data) | |
3223 | return NULL; | |
3224 | ||
ab432490 | 3225 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3226 | if (!reader.dummy_p) |
eb5dd737 | 3227 | dw2_get_file_names_reader (&reader, reader.comp_unit_die); |
dee91e82 DE |
3228 | |
3229 | if (this_cu->v.quick->no_file_data) | |
3230 | return NULL; | |
3231 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3232 | } |
3233 | ||
3234 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3235 | real path for a given file name from the line table. */ |
2fdf6df6 | 3236 | |
9291a0cd | 3237 | static const char * |
976ca316 | 3238 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3239 | struct quick_file_names *qfn, int index) |
9291a0cd | 3240 | { |
7b9f3c50 | 3241 | if (qfn->real_names == NULL) |
976ca316 | 3242 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3243 | qfn->num_file_names, const char *); |
9291a0cd | 3244 | |
7b9f3c50 | 3245 | if (qfn->real_names[index] == NULL) |
14278e1f | 3246 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3247 | |
7b9f3c50 | 3248 | return qfn->real_names[index]; |
9291a0cd TT |
3249 | } |
3250 | ||
39298a5d TT |
3251 | struct symtab * |
3252 | dwarf2_base_index_functions::find_last_source_symtab (struct objfile *objfile) | |
9291a0cd | 3253 | { |
976ca316 | 3254 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
0d305d5c TT |
3255 | dwarf2_per_cu_data *dwarf_cu |
3256 | = per_objfile->per_bfd->all_comp_units.back ().get (); | |
976ca316 | 3257 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); |
ae2de4f8 | 3258 | |
43f3e411 DE |
3259 | if (cust == NULL) |
3260 | return NULL; | |
ed2dc618 | 3261 | |
43f3e411 | 3262 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3263 | } |
3264 | ||
7b9f3c50 DE |
3265 | /* Traversal function for dw2_forget_cached_source_info. */ |
3266 | ||
3267 | static int | |
3268 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3269 | { |
7b9f3c50 | 3270 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3271 | |
7b9f3c50 | 3272 | if (file_data->real_names) |
9291a0cd | 3273 | { |
7b9f3c50 | 3274 | int i; |
9291a0cd | 3275 | |
7b9f3c50 | 3276 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3277 | { |
7b9f3c50 DE |
3278 | xfree ((void*) file_data->real_names[i]); |
3279 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3280 | } |
3281 | } | |
7b9f3c50 DE |
3282 | |
3283 | return 1; | |
3284 | } | |
3285 | ||
39298a5d TT |
3286 | void |
3287 | dwarf2_base_index_functions::forget_cached_source_info | |
3288 | (struct objfile *objfile) | |
7b9f3c50 | 3289 | { |
976ca316 | 3290 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3291 | |
976ca316 | 3292 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3293 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3294 | } |
3295 | ||
da51c347 DE |
3296 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3297 | ||
3298 | struct dw2_symtab_iterator | |
9291a0cd | 3299 | { |
ed2dc618 | 3300 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3301 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3302 | /* If set, only look for symbols that match that block. Valid values are |
3303 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3304 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3305 | /* The kind of symbol we're looking for. */ |
3306 | domain_enum domain; | |
3307 | /* The list of CUs from the index entry of the symbol, | |
3308 | or NULL if not found. */ | |
42c2c694 | 3309 | offset_view vec; |
da51c347 DE |
3310 | /* The next element in VEC to look at. */ |
3311 | int next; | |
3312 | /* The number of elements in VEC, or zero if there is no match. */ | |
3313 | int length; | |
8943b874 DE |
3314 | /* Have we seen a global version of the symbol? |
3315 | If so we can ignore all further global instances. | |
3316 | This is to work around gold/15646, inefficient gold-generated | |
3317 | indices. */ | |
3318 | int global_seen; | |
da51c347 | 3319 | }; |
9291a0cd | 3320 | |
7089bd88 | 3321 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ |
2fdf6df6 | 3322 | |
9291a0cd | 3323 | static void |
7089bd88 TT |
3324 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3325 | dwarf2_per_objfile *per_objfile, | |
3326 | gdb::optional<block_enum> block_index, | |
3327 | domain_enum domain, offset_type namei) | |
da51c347 | 3328 | { |
976ca316 | 3329 | iter->per_objfile = per_objfile; |
da51c347 DE |
3330 | iter->block_index = block_index; |
3331 | iter->domain = domain; | |
3332 | iter->next = 0; | |
8943b874 | 3333 | iter->global_seen = 0; |
42c2c694 | 3334 | iter->vec = {}; |
e5f3ece2 | 3335 | iter->length = 0; |
e5f3ece2 TV |
3336 | |
3337 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3338 | /* index is NULL if OBJF_READNOW. */ | |
3339 | if (index == NULL) | |
3340 | return; | |
3341 | ||
3342 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
42c2c694 | 3343 | offset_type vec_idx = index->symbol_vec_index (namei); |
e5f3ece2 | 3344 | |
42c2c694 TT |
3345 | iter->vec = offset_view (index->constant_pool.slice (vec_idx)); |
3346 | iter->length = iter->vec[0]; | |
da51c347 DE |
3347 | } |
3348 | ||
3349 | /* Return the next matching CU or NULL if there are no more. */ | |
3350 | ||
3351 | static struct dwarf2_per_cu_data * | |
3352 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3353 | { | |
976ca316 | 3354 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3355 | |
da51c347 DE |
3356 | for ( ; iter->next < iter->length; ++iter->next) |
3357 | { | |
42c2c694 | 3358 | offset_type cu_index_and_attrs = iter->vec[iter->next + 1]; |
da51c347 | 3359 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); |
da51c347 DE |
3360 | gdb_index_symbol_kind symbol_kind = |
3361 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3362 | /* Only check the symbol attributes if they're present. | |
3363 | Indices prior to version 7 don't record them, | |
3364 | and indices >= 7 may elide them for certain symbols | |
3365 | (gold does this). */ | |
3366 | int attrs_valid = | |
976ca316 | 3367 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3368 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3369 | ||
3190f0c6 | 3370 | /* Don't crash on bad data. */ |
91eea9cc | 3371 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
3190f0c6 | 3372 | { |
b98664d3 | 3373 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3374 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3375 | continue; |
3376 | } | |
3377 | ||
91eea9cc | 3378 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (cu_index); |
3190f0c6 | 3379 | |
da51c347 | 3380 | /* Skip if already read in. */ |
976ca316 | 3381 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3382 | continue; |
3383 | ||
8943b874 DE |
3384 | /* Check static vs global. */ |
3385 | if (attrs_valid) | |
3386 | { | |
2b79f376 SM |
3387 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3388 | ||
3389 | if (iter->block_index.has_value ()) | |
3390 | { | |
3391 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3392 | ||
3393 | if (is_static != want_static) | |
3394 | continue; | |
3395 | } | |
3396 | ||
8943b874 | 3397 | /* Work around gold/15646. */ |
f030440d TV |
3398 | if (!is_static |
3399 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3400 | { | |
3401 | if (iter->global_seen) | |
3402 | continue; | |
3403 | ||
3404 | iter->global_seen = 1; | |
3405 | } | |
8943b874 | 3406 | } |
da51c347 DE |
3407 | |
3408 | /* Only check the symbol's kind if it has one. */ | |
3409 | if (attrs_valid) | |
3410 | { | |
3411 | switch (iter->domain) | |
3412 | { | |
3413 | case VAR_DOMAIN: | |
3414 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3415 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3416 | /* Some types are also in VAR_DOMAIN. */ | |
3417 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3418 | continue; | |
3419 | break; | |
3420 | case STRUCT_DOMAIN: | |
3421 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3422 | continue; | |
3423 | break; | |
3424 | case LABEL_DOMAIN: | |
3425 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3426 | continue; | |
3427 | break; | |
59c35742 AB |
3428 | case MODULE_DOMAIN: |
3429 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3430 | continue; | |
3431 | break; | |
da51c347 DE |
3432 | default: |
3433 | break; | |
3434 | } | |
3435 | } | |
3436 | ||
3437 | ++iter->next; | |
3438 | return per_cu; | |
3439 | } | |
3440 | ||
3441 | return NULL; | |
3442 | } | |
3443 | ||
39298a5d | 3444 | void |
4829711b TT |
3445 | dwarf2_base_index_functions::print_stats (struct objfile *objfile, |
3446 | bool print_bcache) | |
9291a0cd | 3447 | { |
4829711b TT |
3448 | if (print_bcache) |
3449 | return; | |
3450 | ||
976ca316 | 3451 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
91eea9cc | 3452 | int total = per_objfile->per_bfd->all_comp_units.size (); |
ed2dc618 | 3453 | int count = 0; |
9291a0cd | 3454 | |
ed2dc618 | 3455 | for (int i = 0; i < total; ++i) |
9291a0cd | 3456 | { |
91eea9cc | 3457 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (i); |
9291a0cd | 3458 | |
976ca316 | 3459 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3460 | ++count; |
3461 | } | |
e4a48d9d | 3462 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3463 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3464 | } | |
3465 | ||
779bd270 DE |
3466 | /* This dumps minimal information about the index. |
3467 | It is called via "mt print objfiles". | |
3468 | One use is to verify .gdb_index has been loaded by the | |
3469 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3470 | ||
39298a5d TT |
3471 | void |
3472 | dwarf2_gdb_index::dump (struct objfile *objfile) | |
9291a0cd | 3473 | { |
976ca316 | 3474 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3475 | |
976ca316 | 3476 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3477 | printf_filtered (".gdb_index:"); |
976ca316 | 3478 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3479 | { |
3480 | printf_filtered (" version %d\n", | |
976ca316 | 3481 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3482 | } |
3483 | else | |
3484 | printf_filtered (" faked for \"readnow\"\n"); | |
3485 | printf_filtered ("\n"); | |
9291a0cd TT |
3486 | } |
3487 | ||
39298a5d TT |
3488 | void |
3489 | dwarf2_base_index_functions::expand_all_symtabs (struct objfile *objfile) | |
9291a0cd | 3490 | { |
976ca316 | 3491 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
91eea9cc | 3492 | int total_units = per_objfile->per_bfd->all_comp_units.size (); |
9291a0cd | 3493 | |
ed2dc618 | 3494 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3495 | { |
91eea9cc | 3496 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (i); |
9291a0cd | 3497 | |
58f0c718 TT |
3498 | /* We don't want to directly expand a partial CU, because if we |
3499 | read it with the wrong language, then assertion failures can | |
3500 | be triggered later on. See PR symtab/23010. So, tell | |
3501 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3502 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3503 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3504 | } |
3505 | } | |
3506 | ||
df35e626 | 3507 | static bool |
9a0bacfb TV |
3508 | dw2_expand_symtabs_matching_symbol |
3509 | (mapped_index_base &index, | |
3510 | const lookup_name_info &lookup_name_in, | |
3511 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3512 | gdb::function_view<bool (offset_type)> match_callback, |
3513 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb | 3514 | |
df35e626 | 3515 | static bool |
9a0bacfb | 3516 | dw2_expand_symtabs_matching_one |
97a1449a SM |
3517 | (dwarf2_per_cu_data *per_cu, |
3518 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3519 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3520 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3521 | ||
af82f89d | 3522 | void |
0b7b2c2a | 3523 | dwarf2_gdb_index::expand_matching_symbols |
199b4314 | 3524 | (struct objfile *objfile, |
b054970d | 3525 | const lookup_name_info &name, domain_enum domain, |
199b4314 | 3526 | int global, |
199b4314 | 3527 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3528 | { |
1aa98955 | 3529 | /* Used for Ada. */ |
976ca316 | 3530 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3531 | |
9a0bacfb TV |
3532 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3533 | ||
976ca316 | 3534 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3535 | { |
976ca316 | 3536 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3537 | |
9a0bacfb TV |
3538 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3539 | auto matcher = [&] (const char *symname) | |
3540 | { | |
3541 | if (ordered_compare == nullptr) | |
3542 | return true; | |
3543 | return ordered_compare (symname, match_name) == 0; | |
3544 | }; | |
3545 | ||
b64f703b | 3546 | dw2_expand_symtabs_matching_symbol (index, name, matcher, |
9a0bacfb TV |
3547 | [&] (offset_type namei) |
3548 | { | |
3549 | struct dw2_symtab_iterator iter; | |
3550 | struct dwarf2_per_cu_data *per_cu; | |
3551 | ||
976ca316 | 3552 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3553 | namei); |
9a0bacfb | 3554 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3555 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3556 | nullptr); |
9a0bacfb | 3557 | return true; |
976ca316 | 3558 | }, per_objfile); |
9a0bacfb TV |
3559 | } |
3560 | else | |
3561 | { | |
3562 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3563 | proceed assuming all symtabs have been read in. */ | |
3564 | } | |
9291a0cd TT |
3565 | } |
3566 | ||
e1ef7d7a PA |
3567 | /* Starting from a search name, return the string that finds the upper |
3568 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3569 | list. Returns the empty string to indicate that the upper bound is | |
3570 | the end of the list. */ | |
3571 | ||
3572 | static std::string | |
3573 | make_sort_after_prefix_name (const char *search_name) | |
3574 | { | |
3575 | /* When looking to complete "func", we find the upper bound of all | |
3576 | symbols that start with "func" by looking for where we'd insert | |
3577 | the closest string that would follow "func" in lexicographical | |
3578 | order. Usually, that's "func"-with-last-character-incremented, | |
3579 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3580 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3581 | Especially mind the 0xff character, which is a valid character in | |
3582 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3583 | rule out compilers allowing it in identifiers. Note that | |
3584 | conveniently, strcmp/strcasecmp are specified to compare | |
3585 | characters interpreted as unsigned char. So what we do is treat | |
3586 | the whole string as a base 256 number composed of a sequence of | |
3587 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3588 | to 0, and carries 1 to the following more-significant position. | |
3589 | If the very first character in SEARCH_NAME ends up incremented | |
3590 | and carries/overflows, then the upper bound is the end of the | |
3591 | list. The string after the empty string is also the empty | |
3592 | string. | |
3593 | ||
3594 | Some examples of this operation: | |
3595 | ||
3596 | SEARCH_NAME => "+1" RESULT | |
3597 | ||
3598 | "abc" => "abd" | |
3599 | "ab\xff" => "ac" | |
3600 | "\xff" "a" "\xff" => "\xff" "b" | |
3601 | "\xff" => "" | |
3602 | "\xff\xff" => "" | |
3603 | "" => "" | |
3604 | ||
3605 | Then, with these symbols for example: | |
3606 | ||
3607 | func | |
3608 | func1 | |
3609 | fund | |
3610 | ||
3611 | completing "func" looks for symbols between "func" and | |
3612 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3613 | which finds "func" and "func1", but not "fund". | |
3614 | ||
3615 | And with: | |
3616 | ||
3617 | funcÿ (Latin1 'ÿ' [0xff]) | |
3618 | funcÿ1 | |
3619 | fund | |
3620 | ||
3621 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3622 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3623 | ||
3624 | And with: | |
3625 | ||
3626 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3627 | ÿÿ1 | |
3628 | ||
3629 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3630 | the end of the list. | |
3631 | */ | |
3632 | std::string after = search_name; | |
3633 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3634 | after.pop_back (); | |
3635 | if (!after.empty ()) | |
3636 | after.back () = (unsigned char) after.back () + 1; | |
3637 | return after; | |
3638 | } | |
3639 | ||
5c58de74 | 3640 | /* See declaration. */ |
61d96d7e | 3641 | |
5c58de74 PA |
3642 | std::pair<std::vector<name_component>::const_iterator, |
3643 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3644 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3645 | (const lookup_name_info &lookup_name_without_params, language lang, |
3646 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3647 | { |
5c58de74 PA |
3648 | auto *name_cmp |
3649 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3650 | |
3b00ef10 | 3651 | const char *lang_name |
e0802d59 | 3652 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3653 | |
3f563c84 PA |
3654 | /* Comparison function object for lower_bound that matches against a |
3655 | given symbol name. */ | |
3656 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3657 | const char *name) | |
3658 | { | |
fcf23d5b | 3659 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3660 | const char *elem_name = elem_qualified + elem.name_offset; |
3661 | return name_cmp (elem_name, name) < 0; | |
3662 | }; | |
3663 | ||
3664 | /* Comparison function object for upper_bound that matches against a | |
3665 | given symbol name. */ | |
3666 | auto lookup_compare_upper = [&] (const char *name, | |
3667 | const name_component &elem) | |
3668 | { | |
fcf23d5b | 3669 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3670 | const char *elem_name = elem_qualified + elem.name_offset; |
3671 | return name_cmp (name, elem_name) < 0; | |
3672 | }; | |
3673 | ||
5c58de74 PA |
3674 | auto begin = this->name_components.begin (); |
3675 | auto end = this->name_components.end (); | |
3f563c84 PA |
3676 | |
3677 | /* Find the lower bound. */ | |
3678 | auto lower = [&] () | |
3679 | { | |
3b00ef10 | 3680 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3681 | return begin; |
3682 | else | |
3b00ef10 | 3683 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3684 | } (); |
3685 | ||
3686 | /* Find the upper bound. */ | |
3687 | auto upper = [&] () | |
3688 | { | |
5c58de74 | 3689 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3690 | { |
e1ef7d7a PA |
3691 | /* In completion mode, we want UPPER to point past all |
3692 | symbols names that have the same prefix. I.e., with | |
3693 | these symbols, and completing "func": | |
3694 | ||
3695 | function << lower bound | |
3696 | function1 | |
3697 | other_function << upper bound | |
3698 | ||
3699 | We find the upper bound by looking for the insertion | |
3700 | point of "func"-with-last-character-incremented, | |
3701 | i.e. "fund". */ | |
3b00ef10 | 3702 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3703 | if (after.empty ()) |
3f563c84 | 3704 | return end; |
e6b2f5ef PA |
3705 | return std::lower_bound (lower, end, after.c_str (), |
3706 | lookup_compare_lower); | |
3f563c84 PA |
3707 | } |
3708 | else | |
3b00ef10 | 3709 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3710 | } (); |
3711 | ||
5c58de74 PA |
3712 | return {lower, upper}; |
3713 | } | |
3714 | ||
3715 | /* See declaration. */ | |
3716 | ||
3717 | void | |
fcf23d5b | 3718 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3719 | { |
3720 | if (!this->name_components.empty ()) | |
3721 | return; | |
3722 | ||
3723 | this->name_components_casing = case_sensitivity; | |
3724 | auto *name_cmp | |
3725 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3726 | ||
3727 | /* The code below only knows how to break apart components of C++ | |
3728 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3729 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3730 | auto count = this->symbol_name_count (); |
3731 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3732 | { |
44ed8f3e | 3733 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3734 | continue; |
3735 | ||
fcf23d5b | 3736 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3737 | |
3738 | /* Add each name component to the name component table. */ | |
3739 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3740 | |
3741 | if (strstr (name, "::") != nullptr) | |
3742 | { | |
3743 | for (unsigned int current_len = cp_find_first_component (name); | |
3744 | name[current_len] != '\0'; | |
3745 | current_len += cp_find_first_component (name + current_len)) | |
3746 | { | |
3747 | gdb_assert (name[current_len] == ':'); | |
3748 | this->name_components.push_back ({previous_len, idx}); | |
3749 | /* Skip the '::'. */ | |
3750 | current_len += 2; | |
3751 | previous_len = current_len; | |
3752 | } | |
3753 | } | |
3754 | else | |
5c58de74 | 3755 | { |
3b00ef10 TT |
3756 | /* Handle the Ada encoded (aka mangled) form here. */ |
3757 | for (const char *iter = strstr (name, "__"); | |
3758 | iter != nullptr; | |
3759 | iter = strstr (iter, "__")) | |
3760 | { | |
3761 | this->name_components.push_back ({previous_len, idx}); | |
3762 | iter += 2; | |
3763 | previous_len = iter - name; | |
3764 | } | |
5c58de74 | 3765 | } |
3b00ef10 | 3766 | |
5c58de74 PA |
3767 | this->name_components.push_back ({previous_len, idx}); |
3768 | } | |
3769 | ||
3770 | /* Sort name_components elements by name. */ | |
3771 | auto name_comp_compare = [&] (const name_component &left, | |
3772 | const name_component &right) | |
3773 | { | |
fcf23d5b SM |
3774 | const char *left_qualified |
3775 | = this->symbol_name_at (left.idx, per_objfile); | |
3776 | const char *right_qualified | |
3777 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
3778 | |
3779 | const char *left_name = left_qualified + left.name_offset; | |
3780 | const char *right_name = right_qualified + right.name_offset; | |
3781 | ||
3782 | return name_cmp (left_name, right_name) < 0; | |
3783 | }; | |
3784 | ||
3785 | std::sort (this->name_components.begin (), | |
3786 | this->name_components.end (), | |
3787 | name_comp_compare); | |
3788 | } | |
3789 | ||
3790 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3791 | mapped_index_base instead of the containing objfile. This is split |
3792 | to a separate function in order to be able to unit test the | |
3793 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3794 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3795 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 | 3796 | |
df35e626 | 3797 | static bool |
5c58de74 | 3798 | dw2_expand_symtabs_matching_symbol |
44ed8f3e | 3799 | (mapped_index_base &index, |
5c58de74 PA |
3800 | const lookup_name_info &lookup_name_in, |
3801 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3802 | gdb::function_view<bool (offset_type)> match_callback, |
3803 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
3804 | { |
3805 | lookup_name_info lookup_name_without_params | |
3806 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3807 | |
3808 | /* Build the symbol name component sorted vector, if we haven't | |
3809 | yet. */ | |
fcf23d5b | 3810 | index.build_name_components (per_objfile); |
5c58de74 | 3811 | |
3f563c84 PA |
3812 | /* The same symbol may appear more than once in the range though. |
3813 | E.g., if we're looking for symbols that complete "w", and we have | |
3814 | a symbol named "w1::w2", we'll find the two name components for | |
3815 | that same symbol in the range. To be sure we only call the | |
3816 | callback once per symbol, we first collect the symbol name | |
3817 | indexes that matched in a temporary vector and ignore | |
3818 | duplicates. */ | |
3819 | std::vector<offset_type> matches; | |
3f563c84 | 3820 | |
3b00ef10 TT |
3821 | struct name_and_matcher |
3822 | { | |
3823 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 3824 | const char *name; |
3b00ef10 TT |
3825 | |
3826 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3827 | { |
ecc6c606 | 3828 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
3829 | } |
3830 | }; | |
3831 | ||
3832 | /* A vector holding all the different symbol name matchers, for all | |
3833 | languages. */ | |
3834 | std::vector<name_and_matcher> matchers; | |
3835 | ||
3836 | for (int i = 0; i < nr_languages; i++) | |
3837 | { | |
3838 | enum language lang_e = (enum language) i; | |
3839 | ||
3840 | const language_defn *lang = language_def (lang_e); | |
3841 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 3842 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 3843 | |
3b00ef10 | 3844 | name_and_matcher key { |
dda83cd7 | 3845 | name_matcher, |
3b00ef10 TT |
3846 | lookup_name_without_params.language_lookup_name (lang_e) |
3847 | }; | |
3848 | ||
3849 | /* Don't insert the same comparison routine more than once. | |
3850 | Note that we do this linear walk. This is not a problem in | |
3851 | practice because the number of supported languages is | |
3852 | low. */ | |
3853 | if (std::find (matchers.begin (), matchers.end (), key) | |
3854 | != matchers.end ()) | |
9291a0cd | 3855 | continue; |
3b00ef10 TT |
3856 | matchers.push_back (std::move (key)); |
3857 | ||
3858 | auto bounds | |
3859 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 3860 | lang_e, per_objfile); |
3b00ef10 TT |
3861 | |
3862 | /* Now for each symbol name in range, check to see if we have a name | |
3863 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3864 | ||
3865 | for (; bounds.first != bounds.second; ++bounds.first) | |
3866 | { | |
fcf23d5b SM |
3867 | const char *qualified |
3868 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
3869 | |
3870 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3871 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3872 | continue; | |
9291a0cd | 3873 | |
3b00ef10 TT |
3874 | matches.push_back (bounds.first->idx); |
3875 | } | |
3f563c84 PA |
3876 | } |
3877 | ||
3878 | std::sort (matches.begin (), matches.end ()); | |
3879 | ||
3880 | /* Finally call the callback, once per match. */ | |
3881 | ULONGEST prev = -1; | |
df35e626 | 3882 | bool result = true; |
3f563c84 PA |
3883 | for (offset_type idx : matches) |
3884 | { | |
3885 | if (prev != idx) | |
3886 | { | |
3b00ef10 | 3887 | if (!match_callback (idx)) |
df35e626 TT |
3888 | { |
3889 | result = false; | |
3890 | break; | |
3891 | } | |
3f563c84 PA |
3892 | prev = idx; |
3893 | } | |
3894 | } | |
3895 | ||
3896 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3897 | (offset_type)-1 are both possible values. */ | |
3898 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
df35e626 TT |
3899 | |
3900 | return result; | |
3f563c84 PA |
3901 | } |
3902 | ||
c62446b1 PA |
3903 | #if GDB_SELF_TEST |
3904 | ||
3905 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3906 | ||
a3c5fafd PA |
3907 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3908 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3909 | mapped_index_base interface. Builds an index from the symbol list | |
3910 | passed as parameter to the constructor. */ | |
3911 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3912 | { |
3913 | public: | |
a3c5fafd PA |
3914 | mock_mapped_index (gdb::array_view<const char *> symbols) |
3915 | : m_symbol_table (symbols) | |
c62446b1 PA |
3916 | {} |
3917 | ||
a3c5fafd | 3918 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 3919 | |
a3c5fafd | 3920 | /* Return the number of names in the symbol table. */ |
632e107b | 3921 | size_t symbol_name_count () const override |
c62446b1 | 3922 | { |
a3c5fafd | 3923 | return m_symbol_table.size (); |
c62446b1 PA |
3924 | } |
3925 | ||
a3c5fafd | 3926 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
3927 | const char *symbol_name_at |
3928 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
3929 | { |
3930 | return m_symbol_table[idx]; | |
3931 | } | |
c62446b1 | 3932 | |
a3c5fafd PA |
3933 | private: |
3934 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
3935 | }; |
3936 | ||
3937 | /* Convenience function that converts a NULL pointer to a "<null>" | |
3938 | string, to pass to print routines. */ | |
3939 | ||
3940 | static const char * | |
3941 | string_or_null (const char *str) | |
3942 | { | |
3943 | return str != NULL ? str : "<null>"; | |
3944 | } | |
3945 | ||
3946 | /* Check if a lookup_name_info built from | |
3947 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
3948 | index. EXPECTED_LIST is the list of expected matches, in expected | |
3949 | matching order. If no match expected, then an empty list is | |
3950 | specified. Returns true on success. On failure prints a warning | |
3951 | indicating the file:line that failed, and returns false. */ | |
3952 | ||
3953 | static bool | |
3954 | check_match (const char *file, int line, | |
3955 | mock_mapped_index &mock_index, | |
3956 | const char *name, symbol_name_match_type match_type, | |
3957 | bool completion_mode, | |
fcf23d5b SM |
3958 | std::initializer_list<const char *> expected_list, |
3959 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
3960 | { |
3961 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
3962 | ||
3963 | bool matched = true; | |
3964 | ||
3965 | auto mismatch = [&] (const char *expected_str, | |
3966 | const char *got) | |
3967 | { | |
3968 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
3969 | "expected=\"%s\", got=\"%s\"\n"), | |
3970 | file, line, | |
3971 | (match_type == symbol_name_match_type::FULL | |
3972 | ? "FULL" : "WILD"), | |
3973 | name, string_or_null (expected_str), string_or_null (got)); | |
3974 | matched = false; | |
3975 | }; | |
3976 | ||
3977 | auto expected_it = expected_list.begin (); | |
3978 | auto expected_end = expected_list.end (); | |
3979 | ||
a3c5fafd | 3980 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
b64f703b | 3981 | nullptr, |
c62446b1 PA |
3982 | [&] (offset_type idx) |
3983 | { | |
fcf23d5b | 3984 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
3985 | const char *expected_str |
3986 | = expected_it == expected_end ? NULL : *expected_it++; | |
3987 | ||
3988 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
3989 | mismatch (expected_str, matched_name); | |
3b00ef10 | 3990 | return true; |
fcf23d5b | 3991 | }, per_objfile); |
c62446b1 PA |
3992 | |
3993 | const char *expected_str | |
3994 | = expected_it == expected_end ? NULL : *expected_it++; | |
3995 | if (expected_str != NULL) | |
3996 | mismatch (expected_str, NULL); | |
3997 | ||
3998 | return matched; | |
3999 | } | |
4000 | ||
4001 | /* The symbols added to the mock mapped_index for testing (in | |
4002 | canonical form). */ | |
4003 | static const char *test_symbols[] = { | |
4004 | "function", | |
4005 | "std::bar", | |
4006 | "std::zfunction", | |
4007 | "std::zfunction2", | |
4008 | "w1::w2", | |
4009 | "ns::foo<char*>", | |
4010 | "ns::foo<int>", | |
4011 | "ns::foo<long>", | |
a20714ff PA |
4012 | "ns2::tmpl<int>::foo2", |
4013 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4014 | |
e1ef7d7a PA |
4015 | /* These are used to check that the increment-last-char in the |
4016 | matching algorithm for completion doesn't match "t1_fund" when | |
4017 | completing "t1_func". */ | |
4018 | "t1_func", | |
4019 | "t1_func1", | |
4020 | "t1_fund", | |
4021 | "t1_fund1", | |
4022 | ||
4023 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4024 | cp-name-parser understands this as a single identifier ("função" | |
4025 | is "function" in PT). */ | |
4026 | u8"u8função", | |
4027 | ||
4028 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4029 | "yfunc\377", | |
4030 | ||
4031 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4032 | "\377", | |
4033 | "\377\377123", | |
4034 | ||
c62446b1 PA |
4035 | /* A name with all sorts of complications. Starts with "z" to make |
4036 | it easier for the completion tests below. */ | |
4037 | #define Z_SYM_NAME \ | |
4038 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4039 | "::tuple<(anonymous namespace)::ui*, " \ | |
4040 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4041 | ||
4042 | Z_SYM_NAME | |
4043 | }; | |
4044 | ||
a3c5fafd PA |
4045 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4046 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4047 | in completion mode. */ | |
5c58de74 PA |
4048 | |
4049 | static bool | |
a3c5fafd | 4050 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4051 | const char *search_name, |
fcf23d5b SM |
4052 | gdb::array_view<const char *> expected_syms, |
4053 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4054 | { |
4055 | lookup_name_info lookup_name (search_name, | |
4056 | symbol_name_match_type::FULL, true); | |
4057 | ||
3b00ef10 | 4058 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4059 | language_cplus, |
4060 | per_objfile); | |
5c58de74 PA |
4061 | |
4062 | size_t distance = std::distance (bounds.first, bounds.second); | |
4063 | if (distance != expected_syms.size ()) | |
4064 | return false; | |
4065 | ||
4066 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4067 | { | |
4068 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4069 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4070 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4071 | return false; | |
4072 | } | |
4073 | ||
4074 | return true; | |
4075 | } | |
4076 | ||
4077 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4078 | method. */ | |
4079 | ||
c62446b1 | 4080 | static void |
5c58de74 PA |
4081 | test_mapped_index_find_name_component_bounds () |
4082 | { | |
4083 | mock_mapped_index mock_index (test_symbols); | |
4084 | ||
fcf23d5b | 4085 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4086 | |
4087 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4088 | method in completion mode. */ | |
4089 | { | |
4090 | static const char *expected_syms[] = { | |
4091 | "t1_func", | |
4092 | "t1_func1", | |
5c58de74 PA |
4093 | }; |
4094 | ||
fcf23d5b SM |
4095 | SELF_CHECK (check_find_bounds_finds |
4096 | (mock_index, "t1_func", expected_syms, | |
4097 | NULL /* per_objfile */)); | |
5c58de74 PA |
4098 | } |
4099 | ||
4100 | /* Check that the increment-last-char in the name matching algorithm | |
4101 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4102 | { | |
4103 | static const char *expected_syms1[] = { | |
4104 | "\377", | |
4105 | "\377\377123", | |
4106 | }; | |
fcf23d5b SM |
4107 | SELF_CHECK (check_find_bounds_finds |
4108 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4109 | |
4110 | static const char *expected_syms2[] = { | |
4111 | "\377\377123", | |
4112 | }; | |
fcf23d5b SM |
4113 | SELF_CHECK (check_find_bounds_finds |
4114 | (mock_index, "\377\377", expected_syms2, | |
4115 | NULL /* per_objfile */)); | |
5c58de74 PA |
4116 | } |
4117 | } | |
4118 | ||
4119 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4120 | ||
4121 | static void | |
4122 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4123 | { |
4124 | mock_mapped_index mock_index (test_symbols); | |
4125 | ||
4126 | /* We let all tests run until the end even if some fails, for debug | |
4127 | convenience. */ | |
4128 | bool any_mismatch = false; | |
4129 | ||
4130 | /* Create the expected symbols list (an initializer_list). Needed | |
4131 | because lists have commas, and we need to pass them to CHECK, | |
4132 | which is a macro. */ | |
4133 | #define EXPECT(...) { __VA_ARGS__ } | |
4134 | ||
4135 | /* Wrapper for check_match that passes down the current | |
4136 | __FILE__/__LINE__. */ | |
4137 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4138 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4139 | mock_index, \ | |
4140 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4141 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4142 | |
4143 | /* Identity checks. */ | |
4144 | for (const char *sym : test_symbols) | |
4145 | { | |
4146 | /* Should be able to match all existing symbols. */ | |
4147 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4148 | EXPECT (sym)); | |
4149 | ||
4150 | /* Should be able to match all existing symbols with | |
4151 | parameters. */ | |
4152 | std::string with_params = std::string (sym) + "(int)"; | |
4153 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4154 | EXPECT (sym)); | |
4155 | ||
4156 | /* Should be able to match all existing symbols with | |
4157 | parameters and qualifiers. */ | |
4158 | with_params = std::string (sym) + " ( int ) const"; | |
4159 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4160 | EXPECT (sym)); | |
4161 | ||
4162 | /* This should really find sym, but cp-name-parser.y doesn't | |
4163 | know about lvalue/rvalue qualifiers yet. */ | |
4164 | with_params = std::string (sym) + " ( int ) &&"; | |
4165 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4166 | {}); | |
4167 | } | |
4168 | ||
e1ef7d7a PA |
4169 | /* Check that the name matching algorithm for completion doesn't get |
4170 | confused with Latin1 'ÿ' / 0xff. */ | |
4171 | { | |
4172 | static const char str[] = "\377"; | |
4173 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4174 | EXPECT ("\377", "\377\377123")); | |
4175 | } | |
4176 | ||
4177 | /* Check that the increment-last-char in the matching algorithm for | |
4178 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4179 | { | |
4180 | static const char str[] = "t1_func"; | |
4181 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4182 | EXPECT ("t1_func", "t1_func1")); | |
4183 | } | |
4184 | ||
c62446b1 PA |
4185 | /* Check that completion mode works at each prefix of the expected |
4186 | symbol name. */ | |
4187 | { | |
4188 | static const char str[] = "function(int)"; | |
4189 | size_t len = strlen (str); | |
4190 | std::string lookup; | |
4191 | ||
4192 | for (size_t i = 1; i < len; i++) | |
4193 | { | |
4194 | lookup.assign (str, i); | |
4195 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4196 | EXPECT ("function")); | |
4197 | } | |
4198 | } | |
4199 | ||
4200 | /* While "w" is a prefix of both components, the match function | |
4201 | should still only be called once. */ | |
4202 | { | |
4203 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4204 | EXPECT ("w1::w2")); | |
a20714ff PA |
4205 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4206 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4207 | } |
4208 | ||
4209 | /* Same, with a "complicated" symbol. */ | |
4210 | { | |
4211 | static const char str[] = Z_SYM_NAME; | |
4212 | size_t len = strlen (str); | |
4213 | std::string lookup; | |
4214 | ||
4215 | for (size_t i = 1; i < len; i++) | |
4216 | { | |
4217 | lookup.assign (str, i); | |
4218 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4219 | EXPECT (Z_SYM_NAME)); | |
4220 | } | |
4221 | } | |
4222 | ||
4223 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4224 | { | |
4225 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4226 | {}); | |
4227 | } | |
4228 | ||
4229 | /* A complete symbol with parameters matches any overload, since the | |
4230 | index has no overload info. */ | |
4231 | { | |
4232 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4233 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4234 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4235 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4236 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4237 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4238 | } |
4239 | ||
4240 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4241 | template argument list. */ | |
4242 | { | |
4243 | static const char expected[] = "ns::foo<int>"; | |
4244 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4245 | EXPECT (expected)); | |
a20714ff PA |
4246 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4247 | EXPECT (expected)); | |
c62446b1 PA |
4248 | } |
4249 | ||
4250 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4251 | template argument list that includes a pointer. */ | |
4252 | { | |
4253 | static const char expected[] = "ns::foo<char*>"; | |
4254 | /* Try both completion and non-completion modes. */ | |
4255 | static const bool completion_mode[2] = {false, true}; | |
4256 | for (size_t i = 0; i < 2; i++) | |
4257 | { | |
4258 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4259 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4260 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4261 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4262 | |
4263 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4264 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4265 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4266 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4267 | } |
4268 | } | |
4269 | ||
4270 | { | |
4271 | /* Check method qualifiers are ignored. */ | |
4272 | static const char expected[] = "ns::foo<char*>"; | |
4273 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4274 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4275 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4276 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4277 | CHECK_MATCH ("foo < char * > ( int ) const", |
4278 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4279 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4280 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4281 | } |
4282 | ||
4283 | /* Test lookup names that don't match anything. */ | |
4284 | { | |
a20714ff PA |
4285 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4286 | {}); | |
4287 | ||
c62446b1 PA |
4288 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4289 | {}); | |
4290 | } | |
4291 | ||
a20714ff PA |
4292 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4293 | which should not be confused with a parameter list. */ | |
4294 | { | |
4295 | static const char *syms[] = { | |
4296 | "A::B::C", | |
4297 | "B::C", | |
4298 | "C", | |
4299 | "A :: B :: C ( int )", | |
4300 | "B :: C ( int )", | |
4301 | "C ( int )", | |
4302 | }; | |
4303 | ||
4304 | for (const char *s : syms) | |
4305 | { | |
4306 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4307 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4308 | } | |
4309 | } | |
4310 | ||
4311 | { | |
4312 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4313 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4314 | EXPECT (expected)); | |
4315 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4316 | EXPECT (expected)); | |
4317 | } | |
4318 | ||
c62446b1 PA |
4319 | SELF_CHECK (!any_mismatch); |
4320 | ||
4321 | #undef EXPECT | |
4322 | #undef CHECK_MATCH | |
4323 | } | |
4324 | ||
5c58de74 PA |
4325 | static void |
4326 | run_test () | |
4327 | { | |
4328 | test_mapped_index_find_name_component_bounds (); | |
4329 | test_dw2_expand_symtabs_matching_symbol (); | |
4330 | } | |
4331 | ||
c62446b1 PA |
4332 | }} // namespace selftests::dw2_expand_symtabs_matching |
4333 | ||
4334 | #endif /* GDB_SELF_TEST */ | |
4335 | ||
4b514bc8 JK |
4336 | /* If FILE_MATCHER is NULL or if PER_CU has |
4337 | dwarf2_per_cu_quick_data::MARK set (see | |
4338 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4339 | EXPANSION_NOTIFY on it. */ | |
4340 | ||
df35e626 | 4341 | static bool |
4b514bc8 | 4342 | dw2_expand_symtabs_matching_one |
97a1449a SM |
4343 | (dwarf2_per_cu_data *per_cu, |
4344 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4345 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4346 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4347 | { | |
4348 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4349 | { | |
af758d11 | 4350 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4351 | |
97a1449a SM |
4352 | compunit_symtab *symtab |
4353 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4354 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4355 | |
af758d11 | 4356 | if (expansion_notify != NULL && symtab_was_null) |
df35e626 | 4357 | return expansion_notify (symtab); |
4b514bc8 | 4358 | } |
df35e626 | 4359 | return true; |
4b514bc8 JK |
4360 | } |
4361 | ||
3f563c84 PA |
4362 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4363 | matched, to expand corresponding CUs that were marked. IDX is the | |
4364 | index of the symbol name that matched. */ | |
4365 | ||
df35e626 | 4366 | static bool |
3f563c84 | 4367 | dw2_expand_marked_cus |
976ca316 | 4368 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4369 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4370 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4371 | block_search_flags search_flags, |
3f563c84 PA |
4372 | search_domain kind) |
4373 | { | |
42c2c694 | 4374 | offset_type vec_len, vec_idx; |
3f563c84 | 4375 | bool global_seen = false; |
976ca316 | 4376 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4377 | |
42c2c694 TT |
4378 | offset_view vec (index.constant_pool.slice (index.symbol_vec_index (idx))); |
4379 | vec_len = vec[0]; | |
61920122 PA |
4380 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) |
4381 | { | |
42c2c694 | 4382 | offset_type cu_index_and_attrs = vec[vec_idx + 1]; |
61920122 PA |
4383 | /* This value is only valid for index versions >= 7. */ |
4384 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4385 | gdb_index_symbol_kind symbol_kind = | |
4386 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4387 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4388 | /* Only check the symbol attributes if they're present. | |
4389 | Indices prior to version 7 don't record them, | |
4390 | and indices >= 7 may elide them for certain symbols | |
4391 | (gold does this). */ | |
4392 | int attrs_valid = | |
4393 | (index.version >= 7 | |
4394 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4395 | ||
4396 | /* Work around gold/15646. */ | |
f030440d TV |
4397 | if (attrs_valid |
4398 | && !is_static | |
4399 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4400 | { |
f030440d | 4401 | if (global_seen) |
61920122 | 4402 | continue; |
f030440d TV |
4403 | |
4404 | global_seen = true; | |
61920122 | 4405 | } |
3190f0c6 | 4406 | |
61920122 PA |
4407 | /* Only check the symbol's kind if it has one. */ |
4408 | if (attrs_valid) | |
4409 | { | |
03a8ea51 TT |
4410 | if (is_static) |
4411 | { | |
4412 | if ((search_flags & SEARCH_STATIC_BLOCK) == 0) | |
4413 | continue; | |
4414 | } | |
4415 | else | |
4416 | { | |
4417 | if ((search_flags & SEARCH_GLOBAL_BLOCK) == 0) | |
4418 | continue; | |
4419 | } | |
4420 | ||
61920122 | 4421 | switch (kind) |
8943b874 | 4422 | { |
61920122 PA |
4423 | case VARIABLES_DOMAIN: |
4424 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4425 | continue; | |
4426 | break; | |
4427 | case FUNCTIONS_DOMAIN: | |
4428 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4429 | continue; |
61920122 PA |
4430 | break; |
4431 | case TYPES_DOMAIN: | |
4432 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4433 | continue; | |
4434 | break; | |
59c35742 AB |
4435 | case MODULES_DOMAIN: |
4436 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4437 | continue; | |
4438 | break; | |
61920122 PA |
4439 | default: |
4440 | break; | |
8943b874 | 4441 | } |
61920122 | 4442 | } |
8943b874 | 4443 | |
61920122 | 4444 | /* Don't crash on bad data. */ |
91eea9cc | 4445 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
61920122 | 4446 | { |
b98664d3 | 4447 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4448 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4449 | continue; |
4450 | } | |
4451 | ||
91eea9cc | 4452 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cu (cu_index); |
df35e626 TT |
4453 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
4454 | expansion_notify)) | |
4455 | return false; | |
61920122 | 4456 | } |
df35e626 TT |
4457 | |
4458 | return true; | |
61920122 PA |
4459 | } |
4460 | ||
4b514bc8 JK |
4461 | /* If FILE_MATCHER is non-NULL, set all the |
4462 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4463 | that match FILE_MATCHER. */ | |
4464 | ||
61920122 | 4465 | static void |
4b514bc8 | 4466 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4467 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4468 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4469 | { |
4b514bc8 | 4470 | if (file_matcher == NULL) |
61920122 PA |
4471 | return; |
4472 | ||
4b514bc8 JK |
4473 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4474 | htab_eq_pointer, | |
4475 | NULL, xcalloc, xfree)); | |
4476 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4477 | htab_eq_pointer, |
4478 | NULL, xcalloc, xfree)); | |
61920122 | 4479 | |
4b514bc8 JK |
4480 | /* The rule is CUs specify all the files, including those used by |
4481 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4482 | |
0d305d5c | 4483 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4484 | { |
927aa2e7 JK |
4485 | QUIT; |
4486 | ||
91eea9cc TT |
4487 | if (per_cu->is_debug_types) |
4488 | continue; | |
927aa2e7 JK |
4489 | per_cu->v.quick->mark = 0; |
4490 | ||
4491 | /* We only need to look at symtabs not already expanded. */ | |
0d305d5c | 4492 | if (per_objfile->symtab_set_p (per_cu.get ())) |
927aa2e7 JK |
4493 | continue; |
4494 | ||
0d305d5c TT |
4495 | quick_file_names *file_data = dw2_get_file_names (per_cu.get (), |
4496 | per_objfile); | |
927aa2e7 JK |
4497 | if (file_data == NULL) |
4498 | continue; | |
4499 | ||
4500 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4501 | continue; | |
4502 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4503 | { | |
4504 | per_cu->v.quick->mark = 1; | |
4505 | continue; | |
4506 | } | |
4507 | ||
b76e467d | 4508 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4509 | { |
4510 | const char *this_real_name; | |
4511 | ||
4512 | if (file_matcher (file_data->file_names[j], false)) | |
4513 | { | |
4514 | per_cu->v.quick->mark = 1; | |
4515 | break; | |
4516 | } | |
4517 | ||
4518 | /* Before we invoke realpath, which can get expensive when many | |
4519 | files are involved, do a quick comparison of the basenames. */ | |
4520 | if (!basenames_may_differ | |
4521 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4522 | true)) | |
4523 | continue; | |
4524 | ||
976ca316 | 4525 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4526 | if (file_matcher (this_real_name, false)) |
4527 | { | |
4528 | per_cu->v.quick->mark = 1; | |
4529 | break; | |
4530 | } | |
4531 | } | |
4532 | ||
b76e467d SM |
4533 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4534 | ? visited_found.get () | |
4535 | : visited_not_found.get (), | |
4536 | file_data, INSERT); | |
927aa2e7 JK |
4537 | *slot = file_data; |
4538 | } | |
4539 | } | |
4540 | ||
df35e626 | 4541 | bool |
af82f89d TT |
4542 | dwarf2_gdb_index::expand_symtabs_matching |
4543 | (struct objfile *objfile, | |
4544 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4545 | const lookup_name_info *lookup_name, | |
4546 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4547 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 4548 | block_search_flags search_flags, |
3bfa51a7 | 4549 | domain_enum domain, |
af82f89d | 4550 | enum search_domain kind) |
927aa2e7 | 4551 | { |
976ca316 | 4552 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4553 | |
4554 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4555 | if (!per_objfile->per_bfd->index_table) |
df35e626 | 4556 | return true; |
927aa2e7 | 4557 | |
976ca316 | 4558 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4559 | |
c1a66c06 TV |
4560 | if (symbol_matcher == NULL && lookup_name == NULL) |
4561 | { | |
0d305d5c | 4562 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4563 | { |
4564 | QUIT; | |
4565 | ||
0d305d5c | 4566 | if (!dw2_expand_symtabs_matching_one (per_cu.get (), per_objfile, |
df35e626 TT |
4567 | file_matcher, |
4568 | expansion_notify)) | |
4569 | return false; | |
c1a66c06 | 4570 | } |
df35e626 | 4571 | return true; |
c1a66c06 TV |
4572 | } |
4573 | ||
976ca316 | 4574 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4575 | |
df35e626 TT |
4576 | bool result |
4577 | = dw2_expand_symtabs_matching_symbol (index, *lookup_name, | |
4578 | symbol_matcher, | |
4579 | [&] (offset_type idx) | |
927aa2e7 | 4580 | { |
df35e626 | 4581 | if (!dw2_expand_marked_cus (per_objfile, idx, file_matcher, |
03a8ea51 | 4582 | expansion_notify, search_flags, kind)) |
df35e626 | 4583 | return false; |
3b00ef10 | 4584 | return true; |
976ca316 | 4585 | }, per_objfile); |
df35e626 TT |
4586 | |
4587 | return result; | |
927aa2e7 JK |
4588 | } |
4589 | ||
4590 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4591 | symtab. */ | |
4592 | ||
4593 | static struct compunit_symtab * | |
4594 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4595 | CORE_ADDR pc) | |
4596 | { | |
4597 | int i; | |
4598 | ||
4599 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4600 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4601 | return cust; | |
4602 | ||
4603 | if (cust->includes == NULL) | |
4604 | return NULL; | |
4605 | ||
4606 | for (i = 0; cust->includes[i]; ++i) | |
4607 | { | |
4608 | struct compunit_symtab *s = cust->includes[i]; | |
4609 | ||
4610 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4611 | if (s != NULL) | |
4612 | return s; | |
4613 | } | |
4614 | ||
4615 | return NULL; | |
4616 | } | |
4617 | ||
39298a5d TT |
4618 | struct compunit_symtab * |
4619 | dwarf2_base_index_functions::find_pc_sect_compunit_symtab | |
4620 | (struct objfile *objfile, | |
4621 | struct bound_minimal_symbol msymbol, | |
4622 | CORE_ADDR pc, | |
4623 | struct obj_section *section, | |
4624 | int warn_if_readin) | |
927aa2e7 JK |
4625 | { |
4626 | struct dwarf2_per_cu_data *data; | |
4627 | struct compunit_symtab *result; | |
4628 | ||
efd7398e TT |
4629 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4630 | if (per_objfile->per_bfd->index_addrmap == nullptr) | |
927aa2e7 JK |
4631 | return NULL; |
4632 | ||
b3b3bada | 4633 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e TT |
4634 | data = ((struct dwarf2_per_cu_data *) |
4635 | addrmap_find (per_objfile->per_bfd->index_addrmap, | |
4636 | pc - baseaddr)); | |
927aa2e7 JK |
4637 | if (!data) |
4638 | return NULL; | |
4639 | ||
af758d11 | 4640 | if (warn_if_readin && per_objfile->symtab_set_p (data)) |
927aa2e7 | 4641 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4642 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4643 | |
97a1449a SM |
4644 | result = recursively_find_pc_sect_compunit_symtab |
4645 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4646 | ||
927aa2e7 JK |
4647 | gdb_assert (result != NULL); |
4648 | return result; | |
4649 | } | |
4650 | ||
39298a5d | 4651 | void |
f4655dee TT |
4652 | dwarf2_base_index_functions::map_symbol_filenames |
4653 | (struct objfile *objfile, | |
4654 | gdb::function_view<symbol_filename_ftype> fun, | |
4655 | bool need_fullname) | |
927aa2e7 | 4656 | { |
976ca316 | 4657 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4658 | |
9fc29955 AB |
4659 | /* Use caches to ensure we only call FUN once for each filename. */ |
4660 | filename_seen_cache filenames_cache; | |
4661 | std::unordered_set<quick_file_names *> qfn_cache; | |
927aa2e7 | 4662 | |
9fc29955 AB |
4663 | /* The rule is CUs specify all the files, including those used by any TU, |
4664 | so there's no need to scan TUs here. We can ignore file names coming | |
4665 | from already-expanded CUs. It is possible that an expanded CU might | |
4666 | reuse the file names data from a currently unexpanded CU, in this | |
4667 | case we don't want to report the files from the unexpanded CU. */ | |
927aa2e7 | 4668 | |
0d305d5c | 4669 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
9fc29955 | 4670 | { |
0d305d5c | 4671 | if (per_objfile->symtab_set_p (per_cu.get ())) |
927aa2e7 | 4672 | { |
9fc29955 AB |
4673 | if (per_cu->v.quick->file_names != nullptr) |
4674 | qfn_cache.insert (per_cu->v.quick->file_names); | |
927aa2e7 | 4675 | } |
9fc29955 | 4676 | } |
927aa2e7 | 4677 | |
0d305d5c | 4678 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
9fc29955 AB |
4679 | { |
4680 | /* We only need to look at symtabs not already expanded. */ | |
0d305d5c | 4681 | if (per_objfile->symtab_set_p (per_cu.get ())) |
9fc29955 | 4682 | continue; |
927aa2e7 | 4683 | |
0d305d5c TT |
4684 | quick_file_names *file_data = dw2_get_file_names (per_cu.get (), |
4685 | per_objfile); | |
9fc29955 AB |
4686 | if (file_data == nullptr |
4687 | || qfn_cache.find (file_data) != qfn_cache.end ()) | |
4688 | continue; | |
927aa2e7 | 4689 | |
9fc29955 AB |
4690 | for (int j = 0; j < file_data->num_file_names; ++j) |
4691 | { | |
4692 | const char *filename = file_data->file_names[j]; | |
4693 | filenames_cache.seen (filename); | |
927aa2e7 JK |
4694 | } |
4695 | } | |
4696 | ||
9fc29955 | 4697 | filenames_cache.traverse ([&] (const char *filename) |
927aa2e7 JK |
4698 | { |
4699 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4700 | ||
4701 | if (need_fullname) | |
4702 | this_real_name = gdb_realpath (filename); | |
f4655dee | 4703 | fun (filename, this_real_name.get ()); |
927aa2e7 JK |
4704 | }); |
4705 | } | |
4706 | ||
39298a5d TT |
4707 | bool |
4708 | dwarf2_base_index_functions::has_symbols (struct objfile *objfile) | |
927aa2e7 | 4709 | { |
fae2120b | 4710 | return true; |
927aa2e7 JK |
4711 | } |
4712 | ||
927aa2e7 JK |
4713 | /* DWARF-5 debug_names reader. */ |
4714 | ||
4715 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4716 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4717 | ||
4718 | /* A helper function that reads the .debug_names section in SECTION | |
4719 | and fills in MAP. FILENAME is the name of the file containing the | |
4720 | section; it is used for error reporting. | |
4721 | ||
4722 | Returns true if all went well, false otherwise. */ | |
4723 | ||
4724 | static bool | |
4725 | read_debug_names_from_section (struct objfile *objfile, | |
4726 | const char *filename, | |
4727 | struct dwarf2_section_info *section, | |
4728 | mapped_debug_names &map) | |
4729 | { | |
96b79293 | 4730 | if (section->empty ()) |
927aa2e7 JK |
4731 | return false; |
4732 | ||
4733 | /* Older elfutils strip versions could keep the section in the main | |
4734 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4735 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4736 | return false; |
4737 | ||
96b79293 | 4738 | section->read (objfile); |
927aa2e7 | 4739 | |
08feed99 | 4740 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4741 | |
4742 | const gdb_byte *addr = section->buffer; | |
4743 | ||
96b79293 | 4744 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4745 | |
4746 | unsigned int bytes_read; | |
4747 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4748 | addr += bytes_read; | |
4749 | ||
4750 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4751 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4752 | if (bytes_read + length != section->size) | |
4753 | { | |
4754 | /* There may be multiple per-CU indices. */ | |
4755 | warning (_("Section .debug_names in %s length %s does not match " | |
4756 | "section length %s, ignoring .debug_names."), | |
4757 | filename, plongest (bytes_read + length), | |
4758 | pulongest (section->size)); | |
4759 | return false; | |
4760 | } | |
4761 | ||
4762 | /* The version number. */ | |
4763 | uint16_t version = read_2_bytes (abfd, addr); | |
4764 | addr += 2; | |
4765 | if (version != 5) | |
4766 | { | |
4767 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4768 | "ignoring .debug_names."), | |
4769 | filename, version); | |
4770 | return false; | |
4771 | } | |
4772 | ||
4773 | /* Padding. */ | |
4774 | uint16_t padding = read_2_bytes (abfd, addr); | |
4775 | addr += 2; | |
4776 | if (padding != 0) | |
4777 | { | |
4778 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4779 | "ignoring .debug_names."), | |
4780 | filename, padding); | |
4781 | return false; | |
4782 | } | |
4783 | ||
4784 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4785 | map.cu_count = read_4_bytes (abfd, addr); | |
4786 | addr += 4; | |
4787 | ||
4788 | /* local_type_unit_count - The number of TUs in the local TU | |
4789 | list. */ | |
4790 | map.tu_count = read_4_bytes (abfd, addr); | |
4791 | addr += 4; | |
4792 | ||
4793 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4794 | list. */ | |
4795 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4796 | addr += 4; | |
4797 | if (foreign_tu_count != 0) | |
4798 | { | |
4799 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4800 | "ignoring .debug_names."), | |
4801 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4802 | return false; | |
4803 | } | |
4804 | ||
4805 | /* bucket_count - The number of hash buckets in the hash lookup | |
4806 | table. */ | |
4807 | map.bucket_count = read_4_bytes (abfd, addr); | |
4808 | addr += 4; | |
4809 | ||
4810 | /* name_count - The number of unique names in the index. */ | |
4811 | map.name_count = read_4_bytes (abfd, addr); | |
4812 | addr += 4; | |
4813 | ||
4814 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4815 | table. */ | |
4816 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4817 | addr += 4; | |
4818 | ||
4819 | /* augmentation_string_size - The size in bytes of the augmentation | |
4820 | string. This value is rounded up to a multiple of 4. */ | |
4821 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4822 | addr += 4; | |
4823 | map.augmentation_is_gdb = ((augmentation_string_size | |
4824 | == sizeof (dwarf5_augmentation)) | |
4825 | && memcmp (addr, dwarf5_augmentation, | |
4826 | sizeof (dwarf5_augmentation)) == 0); | |
4827 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4828 | addr += augmentation_string_size; | |
4829 | ||
4830 | /* List of CUs */ | |
4831 | map.cu_table_reordered = addr; | |
4832 | addr += map.cu_count * map.offset_size; | |
4833 | ||
4834 | /* List of Local TUs */ | |
4835 | map.tu_table_reordered = addr; | |
4836 | addr += map.tu_count * map.offset_size; | |
4837 | ||
4838 | /* Hash Lookup Table */ | |
4839 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4840 | addr += map.bucket_count * 4; | |
4841 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4842 | addr += map.name_count * 4; | |
4843 | ||
4844 | /* Name Table */ | |
4845 | map.name_table_string_offs_reordered = addr; | |
4846 | addr += map.name_count * map.offset_size; | |
4847 | map.name_table_entry_offs_reordered = addr; | |
4848 | addr += map.name_count * map.offset_size; | |
4849 | ||
4850 | const gdb_byte *abbrev_table_start = addr; | |
4851 | for (;;) | |
4852 | { | |
927aa2e7 JK |
4853 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4854 | addr += bytes_read; | |
4855 | if (index_num == 0) | |
4856 | break; | |
4857 | ||
4858 | const auto insertpair | |
4859 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4860 | if (!insertpair.second) | |
4861 | { | |
4862 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4863 | "ignoring .debug_names."), | |
4864 | filename, pulongest (index_num)); | |
4865 | return false; | |
4866 | } | |
4867 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4868 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4869 | addr += bytes_read; | |
4870 | ||
4871 | for (;;) | |
4872 | { | |
4873 | mapped_debug_names::index_val::attr attr; | |
4874 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4875 | addr += bytes_read; | |
4876 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4877 | addr += bytes_read; | |
4878 | if (attr.form == DW_FORM_implicit_const) | |
4879 | { | |
4880 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4881 | &bytes_read); | |
4882 | addr += bytes_read; | |
4883 | } | |
4884 | if (attr.dw_idx == 0 && attr.form == 0) | |
4885 | break; | |
4886 | indexval.attr_vec.push_back (std::move (attr)); | |
4887 | } | |
4888 | } | |
4889 | if (addr != abbrev_table_start + abbrev_table_size) | |
4890 | { | |
4891 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4892 | "of size %s vs. written as %u, ignoring .debug_names."), |
4893 | filename, plongest (addr - abbrev_table_start), | |
4894 | abbrev_table_size); | |
927aa2e7 JK |
4895 | return false; |
4896 | } | |
4897 | map.entry_pool = addr; | |
4898 | ||
4899 | return true; | |
4900 | } | |
4901 | ||
4902 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4903 | list. */ | |
4904 | ||
4905 | static void | |
168c9250 | 4906 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
4907 | const mapped_debug_names &map, |
4908 | dwarf2_section_info §ion, | |
b76e467d | 4909 | bool is_dwz) |
927aa2e7 | 4910 | { |
3ee6bb11 TV |
4911 | if (!map.augmentation_is_gdb) |
4912 | { | |
fc9a13fb TV |
4913 | for (uint32_t i = 0; i < map.cu_count; ++i) |
4914 | { | |
4915 | sect_offset sect_off | |
4916 | = (sect_offset) (extract_unsigned_integer | |
4917 | (map.cu_table_reordered + i * map.offset_size, | |
4918 | map.offset_size, | |
4919 | map.dwarf5_byte_order)); | |
4920 | /* We don't know the length of the CU, because the CU list in a | |
4921 | .debug_names index can be incomplete, so we can't use the start | |
4922 | of the next CU as end of this CU. We create the CUs here with | |
4923 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
4924 | actual length. */ | |
0d305d5c | 4925 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
fc9a13fb TV |
4926 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
4927 | sect_off, 0); | |
0d305d5c | 4928 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
fc9a13fb | 4929 | } |
d3b54e63 | 4930 | return; |
3ee6bb11 TV |
4931 | } |
4932 | ||
927aa2e7 JK |
4933 | sect_offset sect_off_prev; |
4934 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4935 | { | |
4936 | sect_offset sect_off_next; | |
4937 | if (i < map.cu_count) | |
4938 | { | |
4939 | sect_off_next | |
4940 | = (sect_offset) (extract_unsigned_integer | |
4941 | (map.cu_table_reordered + i * map.offset_size, | |
4942 | map.offset_size, | |
4943 | map.dwarf5_byte_order)); | |
4944 | } | |
4945 | else | |
4946 | sect_off_next = (sect_offset) section.size; | |
4947 | if (i >= 1) | |
4948 | { | |
4949 | const ULONGEST length = sect_off_next - sect_off_prev; | |
0d305d5c | 4950 | std::unique_ptr<dwarf2_per_cu_data> per_cu |
168c9250 | 4951 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 4952 | sect_off_prev, length); |
0d305d5c | 4953 | per_bfd->all_comp_units.push_back (std::move (per_cu)); |
927aa2e7 JK |
4954 | } |
4955 | sect_off_prev = sect_off_next; | |
4956 | } | |
4957 | } | |
4958 | ||
4959 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 4960 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
4961 | |
4962 | static void | |
168c9250 | 4963 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
4964 | const mapped_debug_names &map, |
4965 | const mapped_debug_names &dwz_map) | |
4966 | { | |
168c9250 SM |
4967 | gdb_assert (per_bfd->all_comp_units.empty ()); |
4968 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 4969 | |
168c9250 | 4970 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 4971 | false /* is_dwz */); |
927aa2e7 JK |
4972 | |
4973 | if (dwz_map.cu_count == 0) | |
4974 | return; | |
4975 | ||
168c9250 SM |
4976 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
4977 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 4978 | true /* is_dwz */); |
927aa2e7 JK |
4979 | } |
4980 | ||
4981 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
4982 | elements of all the CUs and return true. Otherwise, return false. */ | |
4983 | ||
4984 | static bool | |
976ca316 | 4985 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 4986 | { |
fcf23d5b SM |
4987 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
4988 | mapped_debug_names dwz_map; | |
976ca316 | 4989 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 4990 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
4991 | |
4992 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
bab287cd | 4993 | &per_bfd->debug_names, *map)) |
927aa2e7 JK |
4994 | return false; |
4995 | ||
4996 | /* Don't use the index if it's empty. */ | |
22ca247e | 4997 | if (map->name_count == 0) |
927aa2e7 JK |
4998 | return false; |
4999 | ||
5000 | /* If there is a .dwz file, read it so we can get its CU list as | |
5001 | well. */ | |
f8c41851 | 5002 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5003 | if (dwz != NULL) |
5004 | { | |
5005 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5006 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5007 | &dwz->debug_names, dwz_map)) |
5008 | { | |
5009 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5010 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5011 | return false; |
5012 | } | |
5013 | } | |
5014 | ||
f8c41851 | 5015 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5016 | |
22ca247e | 5017 | if (map->tu_count != 0) |
927aa2e7 JK |
5018 | { |
5019 | /* We can only handle a single .debug_types when we have an | |
5020 | index. */ | |
f8c41851 | 5021 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5022 | return false; |
5023 | ||
f8c41851 | 5024 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5025 | |
5026 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5027 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5028 | } |
5029 | ||
f8c41851 | 5030 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5031 | |
f8c41851 SM |
5032 | per_bfd->debug_names_table = std::move (map); |
5033 | per_bfd->using_index = 1; | |
5034 | per_bfd->quick_file_names_table = | |
bab287cd | 5035 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); |
927aa2e7 JK |
5036 | |
5037 | return true; | |
5038 | } | |
5039 | ||
927aa2e7 JK |
5040 | /* Type used to manage iterating over all CUs looking for a symbol for |
5041 | .debug_names. */ | |
5042 | ||
5043 | class dw2_debug_names_iterator | |
5044 | { | |
5045 | public: | |
927aa2e7 | 5046 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5047 | block_search_flags block_index, |
2b79f376 | 5048 | domain_enum domain, |
fcf23d5b | 5049 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5050 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5051 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5052 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5053 | {} |
5054 | ||
5055 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
03a8ea51 | 5056 | search_domain search, uint32_t namei, |
3bfa51a7 TT |
5057 | dwarf2_per_objfile *per_objfile, |
5058 | domain_enum domain = UNDEF_DOMAIN) | |
927aa2e7 | 5059 | : m_map (map), |
3bfa51a7 | 5060 | m_domain (domain), |
927aa2e7 | 5061 | m_search (search), |
fcf23d5b SM |
5062 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5063 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5064 | {} |
5065 | ||
3b00ef10 | 5066 | dw2_debug_names_iterator (const mapped_debug_names &map, |
03a8ea51 | 5067 | block_search_flags block_index, domain_enum domain, |
fcf23d5b | 5068 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5069 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5070 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5071 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5072 | {} |
5073 | ||
927aa2e7 JK |
5074 | /* Return the next matching CU or NULL if there are no more. */ |
5075 | dwarf2_per_cu_data *next (); | |
5076 | ||
5077 | private: | |
5078 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5079 | const char *name, |
5080 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5081 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5082 | uint32_t namei, |
5083 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5084 | |
5085 | /* The internalized form of .debug_names. */ | |
5086 | const mapped_debug_names &m_map; | |
5087 | ||
03a8ea51 TT |
5088 | /* Restrict the search to these blocks. */ |
5089 | block_search_flags m_block_index = (SEARCH_GLOBAL_BLOCK | |
5090 | | SEARCH_STATIC_BLOCK); | |
927aa2e7 JK |
5091 | |
5092 | /* The kind of symbol we're looking for. */ | |
5093 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5094 | const search_domain m_search = ALL_DOMAIN; | |
5095 | ||
5096 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5097 | not found. */ | |
5098 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5099 | |
5100 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5101 | }; |
5102 | ||
5103 | const char * | |
fcf23d5b | 5104 | mapped_debug_names::namei_to_name |
976ca316 | 5105 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5106 | { |
5107 | const ULONGEST namei_string_offs | |
5108 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5109 | + namei * offset_size), | |
5110 | offset_size, | |
5111 | dwarf5_byte_order); | |
976ca316 | 5112 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5113 | } |
5114 | ||
5115 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5116 | found, return pointer to its pool data. If NAME cannot be found, | |
5117 | return NULL. */ | |
5118 | ||
5119 | const gdb_byte * | |
5120 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5121 | (const mapped_debug_names &map, const char *name, |
5122 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5123 | { |
5124 | int (*cmp) (const char *, const char *); | |
5125 | ||
54ee4252 | 5126 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5127 | if (current_language->la_language == language_cplus |
5128 | || current_language->la_language == language_fortran | |
5129 | || current_language->la_language == language_d) | |
5130 | { | |
5131 | /* NAME is already canonical. Drop any qualifiers as | |
5132 | .debug_names does not contain any. */ | |
5133 | ||
5134 | if (strchr (name, '(') != NULL) | |
5135 | { | |
54ee4252 | 5136 | without_params = cp_remove_params (name); |
927aa2e7 | 5137 | if (without_params != NULL) |
54ee4252 | 5138 | name = without_params.get (); |
927aa2e7 JK |
5139 | } |
5140 | } | |
5141 | ||
5142 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5143 | ||
5144 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5145 | uint32_t namei | |
5146 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5147 | (map.bucket_table_reordered | |
5148 | + (full_hash % map.bucket_count)), 4, | |
5149 | map.dwarf5_byte_order); | |
5150 | if (namei == 0) | |
5151 | return NULL; | |
5152 | --namei; | |
5153 | if (namei >= map.name_count) | |
5154 | { | |
b98664d3 | 5155 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5156 | "[in module %s]"), |
5157 | namei, map.name_count, | |
fcf23d5b | 5158 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5159 | return NULL; |
5160 | } | |
5161 | ||
5162 | for (;;) | |
5163 | { | |
5164 | const uint32_t namei_full_hash | |
5165 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5166 | (map.hash_table_reordered + namei), 4, | |
5167 | map.dwarf5_byte_order); | |
5168 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5169 | return NULL; | |
5170 | ||
5171 | if (full_hash == namei_full_hash) | |
5172 | { | |
fcf23d5b | 5173 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5174 | |
5175 | #if 0 /* An expensive sanity check. */ | |
5176 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5177 | { | |
b98664d3 | 5178 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5179 | "[in module %s]"), |
5180 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5181 | return NULL; | |
5182 | } | |
5183 | #endif | |
5184 | ||
5185 | if (cmp (namei_string, name) == 0) | |
5186 | { | |
5187 | const ULONGEST namei_entry_offs | |
5188 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5189 | + namei * map.offset_size), | |
5190 | map.offset_size, map.dwarf5_byte_order); | |
5191 | return map.entry_pool + namei_entry_offs; | |
5192 | } | |
5193 | } | |
5194 | ||
5195 | ++namei; | |
5196 | if (namei >= map.name_count) | |
5197 | return NULL; | |
5198 | } | |
5199 | } | |
5200 | ||
5201 | const gdb_byte * | |
5202 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5203 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5204 | { |
5205 | if (namei >= map.name_count) | |
5206 | { | |
b98664d3 | 5207 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5208 | "[in module %s]"), |
5209 | namei, map.name_count, | |
fcf23d5b | 5210 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5211 | return NULL; |
5212 | } | |
5213 | ||
5214 | const ULONGEST namei_entry_offs | |
5215 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5216 | + namei * map.offset_size), | |
5217 | map.offset_size, map.dwarf5_byte_order); | |
5218 | return map.entry_pool + namei_entry_offs; | |
5219 | } | |
5220 | ||
5221 | /* See dw2_debug_names_iterator. */ | |
5222 | ||
5223 | dwarf2_per_cu_data * | |
5224 | dw2_debug_names_iterator::next () | |
5225 | { | |
5226 | if (m_addr == NULL) | |
5227 | return NULL; | |
5228 | ||
fcf23d5b SM |
5229 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5230 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5231 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5232 | |
5233 | again: | |
5234 | ||
5235 | unsigned int bytes_read; | |
5236 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5237 | m_addr += bytes_read; | |
5238 | if (abbrev == 0) | |
5239 | return NULL; | |
5240 | ||
5241 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5242 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5243 | { | |
b98664d3 | 5244 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5245 | "[in module %s]"), |
ed2dc618 | 5246 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5247 | return NULL; |
5248 | } | |
5249 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5250 | enum class symbol_linkage { |
5251 | unknown, | |
5252 | static_, | |
5253 | extern_, | |
23c13d42 | 5254 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5255 | dwarf2_per_cu_data *per_cu = NULL; |
5256 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5257 | { | |
5258 | ULONGEST ull; | |
5259 | switch (attr.form) | |
5260 | { | |
5261 | case DW_FORM_implicit_const: | |
5262 | ull = attr.implicit_const; | |
5263 | break; | |
5264 | case DW_FORM_flag_present: | |
5265 | ull = 1; | |
5266 | break; | |
5267 | case DW_FORM_udata: | |
5268 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5269 | m_addr += bytes_read; | |
5270 | break; | |
6dc55ce9 | 5271 | case DW_FORM_ref4: |
5272 | ull = read_4_bytes (abfd, m_addr); | |
5273 | m_addr += 4; | |
5274 | break; | |
5275 | case DW_FORM_ref8: | |
5276 | ull = read_8_bytes (abfd, m_addr); | |
5277 | m_addr += 8; | |
5278 | break; | |
5279 | case DW_FORM_ref_sig8: | |
5280 | ull = read_8_bytes (abfd, m_addr); | |
5281 | m_addr += 8; | |
5282 | break; | |
927aa2e7 | 5283 | default: |
b98664d3 | 5284 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5285 | dwarf_form_name (attr.form), |
ed2dc618 | 5286 | objfile_name (objfile)); |
927aa2e7 JK |
5287 | return NULL; |
5288 | } | |
5289 | switch (attr.dw_idx) | |
5290 | { | |
5291 | case DW_IDX_compile_unit: | |
5292 | /* Don't crash on bad data. */ | |
bab287cd | 5293 | if (ull >= per_bfd->all_comp_units.size ()) |
927aa2e7 | 5294 | { |
b98664d3 | 5295 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5296 | " [in module %s]"), |
5297 | pulongest (ull), | |
fcf23d5b | 5298 | objfile_name (objfile)); |
927aa2e7 JK |
5299 | continue; |
5300 | } | |
91eea9cc | 5301 | per_cu = per_bfd->get_cu (ull); |
927aa2e7 | 5302 | break; |
8af5c486 JK |
5303 | case DW_IDX_type_unit: |
5304 | /* Don't crash on bad data. */ | |
91eea9cc | 5305 | if (ull >= per_bfd->tu_stats.nr_tus) |
8af5c486 | 5306 | { |
b98664d3 | 5307 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5308 | " [in module %s]"), |
5309 | pulongest (ull), | |
fcf23d5b | 5310 | objfile_name (objfile)); |
8af5c486 JK |
5311 | continue; |
5312 | } | |
91eea9cc | 5313 | per_cu = per_bfd->get_cu (ull + per_bfd->tu_stats.nr_tus); |
8af5c486 | 5314 | break; |
6dc55ce9 | 5315 | case DW_IDX_die_offset: |
5316 | /* In a per-CU index (as opposed to a per-module index), index | |
5317 | entries without CU attribute implicitly refer to the single CU. */ | |
5318 | if (per_cu == NULL) | |
fcf23d5b | 5319 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5320 | break; |
927aa2e7 JK |
5321 | case DW_IDX_GNU_internal: |
5322 | if (!m_map.augmentation_is_gdb) | |
5323 | break; | |
23c13d42 | 5324 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5325 | break; |
5326 | case DW_IDX_GNU_external: | |
5327 | if (!m_map.augmentation_is_gdb) | |
5328 | break; | |
23c13d42 | 5329 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5330 | break; |
5331 | } | |
5332 | } | |
5333 | ||
5334 | /* Skip if already read in. */ | |
fcf23d5b | 5335 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5336 | goto again; |
5337 | ||
5338 | /* Check static vs global. */ | |
03a8ea51 | 5339 | if (symbol_linkage_ != symbol_linkage::unknown) |
927aa2e7 | 5340 | { |
03a8ea51 TT |
5341 | if (symbol_linkage_ == symbol_linkage::static_) |
5342 | { | |
5343 | if ((m_block_index & SEARCH_STATIC_BLOCK) == 0) | |
5344 | goto again; | |
5345 | } | |
5346 | else | |
5347 | { | |
5348 | if ((m_block_index & SEARCH_GLOBAL_BLOCK) == 0) | |
5349 | goto again; | |
5350 | } | |
927aa2e7 JK |
5351 | } |
5352 | ||
5353 | /* Match dw2_symtab_iter_next, symbol_kind | |
5354 | and debug_names::psymbol_tag. */ | |
5355 | switch (m_domain) | |
5356 | { | |
5357 | case VAR_DOMAIN: | |
5358 | switch (indexval.dwarf_tag) | |
5359 | { | |
5360 | case DW_TAG_variable: | |
5361 | case DW_TAG_subprogram: | |
5362 | /* Some types are also in VAR_DOMAIN. */ | |
5363 | case DW_TAG_typedef: | |
5364 | case DW_TAG_structure_type: | |
5365 | break; | |
5366 | default: | |
5367 | goto again; | |
5368 | } | |
5369 | break; | |
5370 | case STRUCT_DOMAIN: | |
5371 | switch (indexval.dwarf_tag) | |
5372 | { | |
5373 | case DW_TAG_typedef: | |
5374 | case DW_TAG_structure_type: | |
5375 | break; | |
5376 | default: | |
5377 | goto again; | |
5378 | } | |
5379 | break; | |
5380 | case LABEL_DOMAIN: | |
5381 | switch (indexval.dwarf_tag) | |
5382 | { | |
5383 | case 0: | |
5384 | case DW_TAG_variable: | |
5385 | break; | |
5386 | default: | |
5387 | goto again; | |
5388 | } | |
5389 | break; | |
59c35742 AB |
5390 | case MODULE_DOMAIN: |
5391 | switch (indexval.dwarf_tag) | |
5392 | { | |
5393 | case DW_TAG_module: | |
5394 | break; | |
5395 | default: | |
5396 | goto again; | |
5397 | } | |
5398 | break; | |
927aa2e7 JK |
5399 | default: |
5400 | break; | |
5401 | } | |
5402 | ||
5403 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5404 | debug_names::psymbol_tag. */ | |
5405 | switch (m_search) | |
4b514bc8 | 5406 | { |
927aa2e7 JK |
5407 | case VARIABLES_DOMAIN: |
5408 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5409 | { |
927aa2e7 JK |
5410 | case DW_TAG_variable: |
5411 | break; | |
5412 | default: | |
5413 | goto again; | |
4b514bc8 | 5414 | } |
927aa2e7 JK |
5415 | break; |
5416 | case FUNCTIONS_DOMAIN: | |
5417 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5418 | { |
927aa2e7 JK |
5419 | case DW_TAG_subprogram: |
5420 | break; | |
5421 | default: | |
5422 | goto again; | |
4b514bc8 | 5423 | } |
927aa2e7 JK |
5424 | break; |
5425 | case TYPES_DOMAIN: | |
5426 | switch (indexval.dwarf_tag) | |
5427 | { | |
5428 | case DW_TAG_typedef: | |
5429 | case DW_TAG_structure_type: | |
5430 | break; | |
5431 | default: | |
5432 | goto again; | |
5433 | } | |
5434 | break; | |
59c35742 AB |
5435 | case MODULES_DOMAIN: |
5436 | switch (indexval.dwarf_tag) | |
5437 | { | |
5438 | case DW_TAG_module: | |
5439 | break; | |
5440 | default: | |
5441 | goto again; | |
5442 | } | |
927aa2e7 JK |
5443 | default: |
5444 | break; | |
4b514bc8 | 5445 | } |
927aa2e7 JK |
5446 | |
5447 | return per_cu; | |
4b514bc8 | 5448 | } |
61920122 | 5449 | |
927aa2e7 JK |
5450 | /* This dumps minimal information about .debug_names. It is called |
5451 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5452 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5453 | |
39298a5d TT |
5454 | void |
5455 | dwarf2_debug_names_index::dump (struct objfile *objfile) | |
927aa2e7 | 5456 | { |
976ca316 | 5457 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5458 | |
976ca316 | 5459 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5460 | printf_filtered (".debug_names:"); |
976ca316 | 5461 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5462 | printf_filtered (" exists\n"); |
5463 | else | |
5464 | printf_filtered (" faked for \"readnow\"\n"); | |
5465 | printf_filtered ("\n"); | |
9291a0cd TT |
5466 | } |
5467 | ||
39298a5d | 5468 | void |
0b7b2c2a | 5469 | dwarf2_debug_names_index::expand_matching_symbols |
3b00ef10 TT |
5470 | (struct objfile *objfile, |
5471 | const lookup_name_info &name, domain_enum domain, | |
5472 | int global, | |
3b00ef10 TT |
5473 | symbol_compare_ftype *ordered_compare) |
5474 | { | |
976ca316 | 5475 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5476 | |
5477 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5478 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5479 | return; |
5480 | ||
976ca316 | 5481 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
03a8ea51 TT |
5482 | const block_search_flags block_flags |
5483 | = global ? SEARCH_GLOBAL_BLOCK : SEARCH_STATIC_BLOCK; | |
3b00ef10 TT |
5484 | |
5485 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5486 | auto matcher = [&] (const char *symname) | |
5487 | { | |
5488 | if (ordered_compare == nullptr) | |
5489 | return true; | |
5490 | return ordered_compare (symname, match_name) == 0; | |
5491 | }; | |
5492 | ||
b64f703b | 5493 | dw2_expand_symtabs_matching_symbol (map, name, matcher, |
3b00ef10 TT |
5494 | [&] (offset_type namei) |
5495 | { | |
5496 | /* The name was matched, now expand corresponding CUs that were | |
5497 | marked. */ | |
03a8ea51 | 5498 | dw2_debug_names_iterator iter (map, block_flags, domain, namei, |
976ca316 | 5499 | per_objfile); |
3b00ef10 TT |
5500 | |
5501 | struct dwarf2_per_cu_data *per_cu; | |
5502 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5503 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5504 | nullptr); |
3b00ef10 | 5505 | return true; |
976ca316 | 5506 | }, per_objfile); |
3b00ef10 TT |
5507 | } |
5508 | ||
df35e626 | 5509 | bool |
39298a5d | 5510 | dwarf2_debug_names_index::expand_symtabs_matching |
927aa2e7 JK |
5511 | (struct objfile *objfile, |
5512 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5513 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5514 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5515 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 5516 | block_search_flags search_flags, |
3bfa51a7 | 5517 | domain_enum domain, |
927aa2e7 JK |
5518 | enum search_domain kind) |
5519 | { | |
976ca316 | 5520 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5521 | |
927aa2e7 | 5522 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5523 | if (!per_objfile->per_bfd->debug_names_table) |
df35e626 | 5524 | return true; |
9291a0cd | 5525 | |
976ca316 | 5526 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5527 | |
c1a66c06 TV |
5528 | if (symbol_matcher == NULL && lookup_name == NULL) |
5529 | { | |
0d305d5c | 5530 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5531 | { |
5532 | QUIT; | |
5533 | ||
0d305d5c | 5534 | if (!dw2_expand_symtabs_matching_one (per_cu.get (), per_objfile, |
df35e626 TT |
5535 | file_matcher, |
5536 | expansion_notify)) | |
5537 | return false; | |
c1a66c06 | 5538 | } |
df35e626 | 5539 | return true; |
c1a66c06 TV |
5540 | } |
5541 | ||
976ca316 | 5542 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5543 | |
df35e626 TT |
5544 | bool result |
5545 | = dw2_expand_symtabs_matching_symbol (map, *lookup_name, | |
5546 | symbol_matcher, | |
5547 | [&] (offset_type namei) | |
927aa2e7 | 5548 | { |
927aa2e7 JK |
5549 | /* The name was matched, now expand corresponding CUs that were |
5550 | marked. */ | |
3bfa51a7 | 5551 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile, domain); |
bbf2f4df | 5552 | |
927aa2e7 JK |
5553 | struct dwarf2_per_cu_data *per_cu; |
5554 | while ((per_cu = iter.next ()) != NULL) | |
df35e626 TT |
5555 | if (!dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
5556 | file_matcher, | |
5557 | expansion_notify)) | |
5558 | return false; | |
3b00ef10 | 5559 | return true; |
976ca316 | 5560 | }, per_objfile); |
df35e626 TT |
5561 | |
5562 | return result; | |
9291a0cd TT |
5563 | } |
5564 | ||
4485a1c1 | 5565 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5566 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5567 | |
5568 | template <typename T> | |
5569 | static gdb::array_view<const gdb_byte> | |
5570 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5571 | { | |
5572 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5573 | ||
96b79293 | 5574 | if (section->empty ()) |
4485a1c1 SM |
5575 | return {}; |
5576 | ||
5577 | /* Older elfutils strip versions could keep the section in the main | |
5578 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5579 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5580 | return {}; |
5581 | ||
96b79293 | 5582 | section->read (obj); |
4485a1c1 | 5583 | |
8bebfcda PA |
5584 | /* dwarf2_section_info::size is a bfd_size_type, while |
5585 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5586 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5587 | is 32-bit. So we need an explicit narrowing conversion here. | |
5588 | This is fine, because it's impossible to allocate or mmap an | |
5589 | array/buffer larger than what size_t can represent. */ | |
5590 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5591 | } |
5592 | ||
87d6a7aa SM |
5593 | /* Lookup the index cache for the contents of the index associated to |
5594 | DWARF2_OBJ. */ | |
5595 | ||
5596 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5597 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5598 | { |
5599 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5600 | if (build_id == nullptr) | |
5601 | return {}; | |
5602 | ||
5603 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5604 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5605 | } |
5606 | ||
5607 | /* Same as the above, but for DWZ. */ | |
5608 | ||
5609 | static gdb::array_view<const gdb_byte> | |
5610 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5611 | { | |
5612 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5613 | if (build_id == nullptr) | |
5614 | return {}; | |
5615 | ||
5616 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5617 | } | |
5618 | ||
edc02ceb | 5619 | /* See dwarf2/public.h. */ |
9291a0cd | 5620 | |
edc02ceb TT |
5621 | void |
5622 | dwarf2_initialize_objfile (struct objfile *objfile) | |
9291a0cd | 5623 | { |
976ca316 SM |
5624 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5625 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 5626 | |
850ed749 SM |
5627 | dwarf_read_debug_printf ("called"); |
5628 | ||
9291a0cd TT |
5629 | /* If we're about to read full symbols, don't bother with the |
5630 | indices. In this case we also don't care if some other debug | |
5631 | format is making psymtabs, because they are all about to be | |
5632 | expanded anyway. */ | |
5633 | if ((objfile->flags & OBJF_READNOW)) | |
5634 | { | |
850ed749 SM |
5635 | dwarf_read_debug_printf ("readnow requested"); |
5636 | ||
17ee85fc TT |
5637 | /* When using READNOW, the using_index flag (set below) indicates that |
5638 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5639 | if (per_bfd->using_index) | |
5640 | { | |
850ed749 | 5641 | dwarf_read_debug_printf ("using_index already set"); |
976ca316 | 5642 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5643 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5644 | return; | |
17ee85fc TT |
5645 | } |
5646 | ||
5647 | per_bfd->using_index = 1; | |
976ca316 | 5648 | create_all_comp_units (per_objfile); |
17ee85fc TT |
5649 | per_bfd->quick_file_names_table |
5650 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 5651 | per_objfile->resize_symtabs (); |
9291a0cd | 5652 | |
91eea9cc | 5653 | for (int i = 0; i < per_bfd->all_comp_units.size (); ++i) |
9291a0cd | 5654 | { |
91eea9cc | 5655 | dwarf2_per_cu_data *per_cu = per_bfd->get_cu (i); |
9291a0cd | 5656 | |
17ee85fc | 5657 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 5658 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5659 | } |
5660 | ||
edc02ceb TT |
5661 | /* Arrange for gdb to see the "quick" functions. However, these |
5662 | functions will be no-ops because we will have expanded all | |
5663 | symtabs. */ | |
5664 | objfile->qf.push_front (make_dwarf_gdb_index ()); | |
5665 | return; | |
9291a0cd TT |
5666 | } |
5667 | ||
17ee85fc TT |
5668 | /* Was a debug names index already read when we processed an objfile sharing |
5669 | PER_BFD? */ | |
5670 | if (per_bfd->debug_names_table != nullptr) | |
5671 | { | |
850ed749 | 5672 | dwarf_read_debug_printf ("re-using shared debug names table"); |
976ca316 | 5673 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5674 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5675 | return; | |
17ee85fc TT |
5676 | } |
5677 | ||
5678 | /* Was a GDB index already read when we processed an objfile sharing | |
5679 | PER_BFD? */ | |
5680 | if (per_bfd->index_table != nullptr) | |
5681 | { | |
850ed749 | 5682 | dwarf_read_debug_printf ("re-using shared index table"); |
976ca316 | 5683 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5684 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5685 | return; | |
17ee85fc TT |
5686 | } |
5687 | ||
efb763a5 SM |
5688 | /* There might already be partial symtabs built for this BFD. This happens |
5689 | when loading the same binary twice with the index-cache enabled. If so, | |
5690 | don't try to read an index. The objfile / per_objfile initialization will | |
5691 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
5692 | code path. */ | |
5693 | if (per_bfd->partial_symtabs != nullptr) | |
850ed749 SM |
5694 | { |
5695 | dwarf_read_debug_printf ("re-using shared partial symtabs"); | |
edc02ceb TT |
5696 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
5697 | return; | |
850ed749 | 5698 | } |
efb763a5 | 5699 | |
976ca316 | 5700 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a | 5701 | { |
850ed749 | 5702 | dwarf_read_debug_printf ("found debug names"); |
976ca316 | 5703 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5704 | objfile->qf.push_front (make_dwarf_debug_names ()); |
5705 | return; | |
3c0aa29a | 5706 | } |
927aa2e7 | 5707 | |
976ca316 | 5708 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 5709 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5710 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a | 5711 | { |
850ed749 | 5712 | dwarf_read_debug_printf ("found gdb index from file"); |
976ca316 | 5713 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5714 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5715 | return; | |
3c0aa29a | 5716 | } |
9291a0cd | 5717 | |
87d6a7aa | 5718 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 5719 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
5720 | get_gdb_index_contents_from_cache, |
5721 | get_gdb_index_contents_from_cache_dwz)) | |
5722 | { | |
850ed749 | 5723 | dwarf_read_debug_printf ("found gdb index from cache"); |
87d6a7aa | 5724 | global_index_cache.hit (); |
976ca316 | 5725 | per_objfile->resize_symtabs (); |
edc02ceb TT |
5726 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
5727 | return; | |
87d6a7aa SM |
5728 | } |
5729 | ||
5730 | global_index_cache.miss (); | |
edc02ceb | 5731 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
9291a0cd TT |
5732 | } |
5733 | ||
5734 | \f | |
5735 | ||
dce234bc PP |
5736 | /* Build a partial symbol table. */ |
5737 | ||
5738 | void | |
eb36a3eb | 5739 | dwarf2_build_psymtabs (struct objfile *objfile, psymbol_functions *psf) |
dce234bc | 5740 | { |
976ca316 SM |
5741 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5742 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
5743 | |
5744 | if (per_bfd->partial_symtabs != nullptr) | |
5745 | { | |
5746 | /* Partial symbols were already read, so now we can simply | |
5747 | attach them. */ | |
eb36a3eb TT |
5748 | if (psf == nullptr) |
5749 | { | |
5750 | psf = new psymbol_functions (per_bfd->partial_symtabs); | |
5751 | objfile->qf.emplace_front (psf); | |
5752 | } | |
5753 | else | |
5754 | psf->set_partial_symtabs (per_bfd->partial_symtabs); | |
976ca316 | 5755 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5756 | return; |
5757 | } | |
c9bf0622 | 5758 | |
eb36a3eb TT |
5759 | if (psf == nullptr) |
5760 | { | |
5761 | psf = new psymbol_functions; | |
5762 | objfile->qf.emplace_front (psf); | |
5763 | } | |
5764 | const std::shared_ptr<psymtab_storage> &partial_symtabs | |
5765 | = psf->get_partial_symtabs (); | |
5766 | ||
51962708 TT |
5767 | /* Set the local reference to partial symtabs, so that we don't try |
5768 | to read them again if reading another objfile with the same BFD. | |
5769 | If we can't in fact share, this won't make a difference anyway as | |
5770 | the dwarf2_per_bfd object won't be shared. */ | |
eb36a3eb | 5771 | per_bfd->partial_symtabs = partial_symtabs; |
51962708 | 5772 | |
a70b8144 | 5773 | try |
c9bf0622 TT |
5774 | { |
5775 | /* This isn't really ideal: all the data we allocate on the | |
5776 | objfile's obstack is still uselessly kept around. However, | |
5777 | freeing it seems unsafe. */ | |
eb36a3eb | 5778 | psymtab_discarder psymtabs (partial_symtabs.get ()); |
976ca316 | 5779 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 5780 | psymtabs.keep (); |
87d6a7aa | 5781 | |
976ca316 | 5782 | per_objfile->resize_symtabs (); |
af758d11 | 5783 | |
87d6a7aa | 5784 | /* (maybe) store an index in the cache. */ |
976ca316 | 5785 | global_index_cache.store (per_objfile); |
c9bf0622 | 5786 | } |
230d2906 | 5787 | catch (const gdb_exception_error &except) |
492d29ea PA |
5788 | { |
5789 | exception_print (gdb_stderr, except); | |
5790 | } | |
c906108c | 5791 | } |
c906108c | 5792 | |
3b80fe9b DE |
5793 | /* Find the base address of the compilation unit for range lists and |
5794 | location lists. It will normally be specified by DW_AT_low_pc. | |
5795 | In DWARF-3 draft 4, the base address could be overridden by | |
5796 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5797 | compilation units with discontinuous ranges. */ | |
5798 | ||
5799 | static void | |
5800 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5801 | { | |
5802 | struct attribute *attr; | |
5803 | ||
2b24b6e4 | 5804 | cu->base_address.reset (); |
3b80fe9b DE |
5805 | |
5806 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5807 | if (attr != nullptr) |
95f982e5 | 5808 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5809 | else |
5810 | { | |
5811 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5812 | if (attr != nullptr) |
95f982e5 | 5813 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
5814 | } |
5815 | } | |
5816 | ||
36586728 TT |
5817 | /* Helper function that returns the proper abbrev section for |
5818 | THIS_CU. */ | |
5819 | ||
5820 | static struct dwarf2_section_info * | |
5821 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5822 | { | |
5823 | struct dwarf2_section_info *abbrev; | |
c3699833 | 5824 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
5825 | |
5826 | if (this_cu->is_dwz) | |
a7308ce0 | 5827 | abbrev = &dwarf2_get_dwz_file (per_bfd, true)->abbrev; |
36586728 | 5828 | else |
c3699833 | 5829 | abbrev = &per_bfd->abbrev; |
36586728 TT |
5830 | |
5831 | return abbrev; | |
5832 | } | |
5833 | ||
f4dc4d17 DE |
5834 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5835 | ||
5836 | static sect_offset | |
976ca316 | 5837 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 5838 | struct dwarf2_section_info *section, |
9c541725 | 5839 | sect_offset sect_off) |
f4dc4d17 | 5840 | { |
96b79293 | 5841 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5842 | const gdb_byte *info_ptr; |
ac298888 | 5843 | unsigned int initial_length_size, offset_size; |
43988095 | 5844 | uint16_t version; |
f4dc4d17 | 5845 | |
976ca316 | 5846 | section->read (per_objfile->objfile); |
9c541725 | 5847 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5848 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5849 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5850 | info_ptr += initial_length_size; |
5851 | ||
5852 | version = read_2_bytes (abfd, info_ptr); | |
5853 | info_ptr += 2; | |
5854 | if (version >= 5) | |
5855 | { | |
5856 | /* Skip unit type and address size. */ | |
5857 | info_ptr += 2; | |
5858 | } | |
5859 | ||
24aa364d | 5860 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5861 | } |
5862 | ||
b83470bf TT |
5863 | /* A partial symtab that is used only for include files. */ |
5864 | struct dwarf2_include_psymtab : public partial_symtab | |
5865 | { | |
7b249e47 TT |
5866 | dwarf2_include_psymtab (const char *filename, |
5867 | psymtab_storage *partial_symtabs, | |
0072c873 SM |
5868 | objfile_per_bfd_storage *objfile_per_bfd) |
5869 | : partial_symtab (filename, partial_symtabs, objfile_per_bfd) | |
b83470bf TT |
5870 | { |
5871 | } | |
5872 | ||
5873 | void read_symtab (struct objfile *objfile) override | |
5874 | { | |
194d088f TV |
5875 | /* It's an include file, no symbols to read for it. |
5876 | Everything is in the includer symtab. */ | |
5877 | ||
5878 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
5879 | expansion of the includer psymtab. We use the dependencies[0] field to | |
5880 | model the includer. But if we go the regular route of calling | |
5881 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
5882 | to expand the includer, we'll only use expand_psymtab on the includer | |
5883 | (making it a non-toplevel psymtab), while if we expand the includer via | |
5884 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
5885 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
5886 | psymtab, and trigger read_symtab on the includer here directly. */ | |
5887 | includer ()->read_symtab (objfile); | |
b83470bf TT |
5888 | } |
5889 | ||
5890 | void expand_psymtab (struct objfile *objfile) override | |
5891 | { | |
194d088f TV |
5892 | /* This is not called by read_symtab, and should not be called by any |
5893 | expand_dependencies. */ | |
5894 | gdb_assert (false); | |
b83470bf TT |
5895 | } |
5896 | ||
5717c425 | 5897 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 5898 | { |
5717c425 | 5899 | return includer ()->readin_p (objfile); |
b83470bf TT |
5900 | } |
5901 | ||
5717c425 | 5902 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
5903 | { |
5904 | return nullptr; | |
5905 | } | |
5906 | ||
5907 | private: | |
194d088f TV |
5908 | partial_symtab *includer () const |
5909 | { | |
5910 | /* An include psymtab has exactly one dependency: the psymtab that | |
5911 | includes it. */ | |
5912 | gdb_assert (this->number_of_dependencies == 1); | |
5913 | return this->dependencies[0]; | |
5914 | } | |
b83470bf TT |
5915 | }; |
5916 | ||
aaa75496 JB |
5917 | /* Allocate a new partial symtab for file named NAME and mark this new |
5918 | partial symtab as being an include of PST. */ | |
5919 | ||
5920 | static void | |
84685904 | 5921 | dwarf2_create_include_psymtab (dwarf2_per_bfd *per_bfd, |
7b249e47 TT |
5922 | const char *name, |
5923 | dwarf2_psymtab *pst, | |
5924 | psymtab_storage *partial_symtabs, | |
0072c873 | 5925 | objfile_per_bfd_storage *objfile_per_bfd) |
aaa75496 | 5926 | { |
7b249e47 | 5927 | dwarf2_include_psymtab *subpst |
0072c873 | 5928 | = new dwarf2_include_psymtab (name, partial_symtabs, objfile_per_bfd); |
aaa75496 | 5929 | |
fbd9ab74 | 5930 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 5931 | subpst->dirname = pst->dirname; |
fbd9ab74 | 5932 | |
84685904 | 5933 | subpst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5934 | subpst->dependencies[0] = pst; |
5935 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
5936 | } |
5937 | ||
5938 | /* Read the Line Number Program data and extract the list of files | |
5939 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5940 | partial symtab for each of these included files. */ |
aaa75496 JB |
5941 | |
5942 | static void | |
5943 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5944 | struct die_info *die, |
891813be | 5945 | dwarf2_psymtab *pst) |
aaa75496 | 5946 | { |
fff8551c | 5947 | line_header_up lh; |
d85a05f0 | 5948 | struct attribute *attr; |
aaa75496 | 5949 | |
d85a05f0 | 5950 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
5951 | if (attr != nullptr && attr->form_is_unsigned ()) |
5952 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
5953 | if (lh == NULL) |
5954 | return; /* No linetable, so no includes. */ | |
5955 | ||
79748972 TT |
5956 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5957 | that we pass in the raw text_low here; that is ok because we're | |
5958 | only decoding the line table to make include partial symtabs, and | |
5959 | so the addresses aren't really used. */ | |
4ae976d1 | 5960 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5961 | pst->raw_text_low (), 1); |
aaa75496 JB |
5962 | } |
5963 | ||
348e048f | 5964 | static hashval_t |
52dc124a | 5965 | hash_signatured_type (const void *item) |
348e048f | 5966 | { |
9a3c8263 SM |
5967 | const struct signatured_type *sig_type |
5968 | = (const struct signatured_type *) item; | |
9a619af0 | 5969 | |
348e048f | 5970 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5971 | return sig_type->signature; |
348e048f DE |
5972 | } |
5973 | ||
5974 | static int | |
52dc124a | 5975 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5976 | { |
9a3c8263 SM |
5977 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5978 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5979 | |
348e048f DE |
5980 | return lhs->signature == rhs->signature; |
5981 | } | |
5982 | ||
1fd400ff TT |
5983 | /* Allocate a hash table for signatured types. */ |
5984 | ||
b0b6a987 | 5985 | static htab_up |
298e9637 | 5986 | allocate_signatured_type_table () |
1fd400ff | 5987 | { |
b0b6a987 TT |
5988 | return htab_up (htab_create_alloc (41, |
5989 | hash_signatured_type, | |
5990 | eq_signatured_type, | |
5991 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
5992 | } |
5993 | ||
78d4d2c5 | 5994 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
5995 | and fill them into TYPES_HTAB. It will process only type units, |
5996 | therefore DW_UT_type. */ | |
c88ee1f0 | 5997 | |
78d4d2c5 | 5998 | static void |
976ca316 | 5999 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6000 | struct dwo_file *dwo_file, |
b0b6a987 | 6001 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6002 | rcuh_kind section_kind) |
348e048f | 6003 | { |
976ca316 | 6004 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6005 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6006 | bfd *abfd; |
6007 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6008 | |
b8efb248 | 6009 | abbrev_section = &dwo_file->sections.abbrev; |
4bdcc0c1 | 6010 | |
4800761a | 6011 | dwarf_read_debug_printf ("Reading %s for %s", |
6f738b01 SM |
6012 | section->get_name (), |
6013 | abbrev_section->get_file_name ()); | |
09406207 | 6014 | |
96b79293 | 6015 | section->read (objfile); |
78d4d2c5 | 6016 | info_ptr = section->buffer; |
348e048f | 6017 | |
78d4d2c5 JK |
6018 | if (info_ptr == NULL) |
6019 | return; | |
348e048f | 6020 | |
78d4d2c5 JK |
6021 | /* We can't set abfd until now because the section may be empty or |
6022 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6023 | abfd = section->get_bfd_owner (); |
348e048f | 6024 | |
c0ab21c2 TT |
6025 | /* We don't use cutu_reader here because we don't need to read |
6026 | any dies: the signature is in the header. */ | |
3019eac3 | 6027 | |
78d4d2c5 JK |
6028 | end_ptr = info_ptr + section->size; |
6029 | while (info_ptr < end_ptr) | |
6030 | { | |
0d305d5c | 6031 | std::unique_ptr<signatured_type> sig_type; |
78d4d2c5 JK |
6032 | struct dwo_unit *dwo_tu; |
6033 | void **slot; | |
6034 | const gdb_byte *ptr = info_ptr; | |
6035 | struct comp_unit_head header; | |
6036 | unsigned int length; | |
8b70b953 | 6037 | |
9c541725 | 6038 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6039 | |
a49dd8dd JK |
6040 | /* Initialize it due to a false compiler warning. */ |
6041 | header.signature = -1; | |
9c541725 | 6042 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6043 | |
78d4d2c5 JK |
6044 | /* We need to read the type's signature in order to build the hash |
6045 | table, but we don't need anything else just yet. */ | |
348e048f | 6046 | |
976ca316 | 6047 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6048 | abbrev_section, ptr, section_kind); |
348e048f | 6049 | |
4057dfde | 6050 | length = header.get_length (); |
6caca83c | 6051 | |
78d4d2c5 JK |
6052 | /* Skip dummy type units. */ |
6053 | if (ptr >= info_ptr + length | |
43988095 | 6054 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6055 | || (header.unit_type != DW_UT_type |
6056 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6057 | { |
6058 | info_ptr += length; | |
6059 | continue; | |
6060 | } | |
dee91e82 | 6061 | |
78d4d2c5 | 6062 | if (types_htab == NULL) |
b8efb248 | 6063 | types_htab = allocate_dwo_unit_table (); |
8b70b953 | 6064 | |
b8efb248 TT |
6065 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
6066 | dwo_tu->dwo_file = dwo_file; | |
6067 | dwo_tu->signature = header.signature; | |
6068 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; | |
6069 | dwo_tu->section = section; | |
6070 | dwo_tu->sect_off = sect_off; | |
6071 | dwo_tu->length = length; | |
78d4d2c5 | 6072 | |
b8efb248 | 6073 | slot = htab_find_slot (types_htab.get (), dwo_tu, INSERT); |
78d4d2c5 JK |
6074 | gdb_assert (slot != NULL); |
6075 | if (*slot != NULL) | |
b8efb248 TT |
6076 | complaint (_("debug type entry at offset %s is duplicate to" |
6077 | " the entry at offset %s, signature %s"), | |
6078 | sect_offset_str (sect_off), | |
6079 | sect_offset_str (dwo_tu->sect_off), | |
6080 | hex_string (header.signature)); | |
6081 | *slot = dwo_tu; | |
3019eac3 | 6082 | |
6f738b01 SM |
6083 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6084 | sect_offset_str (sect_off), | |
6085 | hex_string (header.signature)); | |
3019eac3 | 6086 | |
78d4d2c5 JK |
6087 | info_ptr += length; |
6088 | } | |
6089 | } | |
3019eac3 | 6090 | |
78d4d2c5 JK |
6091 | /* Create the hash table of all entries in the .debug_types |
6092 | (or .debug_types.dwo) section(s). | |
b8efb248 | 6093 | DWO_FILE is a pointer to the DWO file object. |
b3c8eb43 | 6094 | |
78d4d2c5 | 6095 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6096 | |
78d4d2c5 | 6097 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6098 | |
78d4d2c5 | 6099 | static void |
976ca316 | 6100 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6101 | struct dwo_file *dwo_file, |
fd5866f6 | 6102 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6103 | htab_up &types_htab) |
78d4d2c5 | 6104 | { |
fd5866f6 | 6105 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6106 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6107 | rcuh_kind::TYPE); | |
3019eac3 DE |
6108 | } |
6109 | ||
5989a64e | 6110 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6111 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6112 | Otherwise we find one. */ | |
6113 | ||
6114 | static struct signatured_type * | |
976ca316 | 6115 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6116 | { |
91eea9cc TT |
6117 | if (per_objfile->per_bfd->all_comp_units.size () |
6118 | == per_objfile->per_bfd->all_comp_units.capacity ()) | |
976ca316 | 6119 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; |
6aa5f3a6 | 6120 | |
0d305d5c TT |
6121 | std::unique_ptr<signatured_type> sig_type_holder |
6122 | = per_objfile->per_bfd->allocate_signatured_type (); | |
6123 | signatured_type *sig_type = sig_type_holder.get (); | |
b2bdb8cf | 6124 | |
976ca316 | 6125 | per_objfile->resize_symtabs (); |
af758d11 | 6126 | |
91eea9cc | 6127 | per_objfile->per_bfd->all_comp_units.push_back (std::move (sig_type_holder)); |
6aa5f3a6 | 6128 | sig_type->signature = sig; |
0d305d5c | 6129 | sig_type->is_debug_types = 1; |
976ca316 | 6130 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 | 6131 | { |
0d305d5c | 6132 | sig_type->v.quick = |
976ca316 | 6133 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6134 | struct dwarf2_per_cu_quick_data); |
6135 | } | |
6136 | ||
6137 | if (slot == NULL) | |
6138 | { | |
976ca316 | 6139 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6140 | sig_type, INSERT); |
6141 | } | |
6142 | gdb_assert (*slot == NULL); | |
6143 | *slot = sig_type; | |
6144 | /* The rest of sig_type must be filled in by the caller. */ | |
6145 | return sig_type; | |
6146 | } | |
6147 | ||
a2ce51a0 DE |
6148 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6149 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6150 | ||
6151 | static void | |
976ca316 | 6152 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6153 | struct signatured_type *sig_entry, |
6154 | struct dwo_unit *dwo_entry) | |
6155 | { | |
976ca316 | 6156 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6157 | |
7ee85ab1 | 6158 | /* Make sure we're not clobbering something we don't expect to. */ |
0d305d5c TT |
6159 | gdb_assert (! sig_entry->queued); |
6160 | gdb_assert (per_objfile->get_cu (sig_entry) == NULL); | |
1859c670 | 6161 | if (per_bfd->using_index) |
6aa5f3a6 | 6162 | { |
0d305d5c TT |
6163 | gdb_assert (sig_entry->v.quick != NULL); |
6164 | gdb_assert (!per_objfile->symtab_set_p (sig_entry)); | |
6aa5f3a6 DE |
6165 | } |
6166 | else | |
0d305d5c | 6167 | gdb_assert (sig_entry->v.psymtab == NULL); |
a2ce51a0 | 6168 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6169 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6170 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6171 | gdb_assert (sig_entry->dwo_unit == NULL); |
6172 | ||
0d305d5c TT |
6173 | sig_entry->section = dwo_entry->section; |
6174 | sig_entry->sect_off = dwo_entry->sect_off; | |
6175 | sig_entry->length = dwo_entry->length; | |
6176 | sig_entry->reading_dwo_directly = 1; | |
6177 | sig_entry->per_bfd = per_bfd; | |
a2ce51a0 DE |
6178 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6179 | sig_entry->dwo_unit = dwo_entry; | |
6180 | } | |
6181 | ||
6182 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6183 | If we haven't read the TU yet, create the signatured_type data structure |
6184 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6185 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6186 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6187 | containing that CU. Otherwise we could end up reading several other DWO | |
6188 | files (due to comdat folding) to process the transitive closure of all the | |
6189 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6190 | type signature that it needs. | |
a2ce51a0 DE |
6191 | We only do this for .gdb_index because in the psymtab case we already have |
6192 | to read all the DWOs to build the type unit groups. */ | |
6193 | ||
6194 | static struct signatured_type * | |
6195 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6196 | { | |
976ca316 | 6197 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6198 | struct dwo_file *dwo_file; |
6199 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6200 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6201 | void **slot; |
a2ce51a0 | 6202 | |
976ca316 | 6203 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6204 | |
6aa5f3a6 DE |
6205 | /* If TU skeletons have been removed then we may not have read in any |
6206 | TUs yet. */ | |
976ca316 SM |
6207 | if (per_objfile->per_bfd->signatured_types == NULL) |
6208 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6209 | |
6210 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6211 | Use the global signatured_types array to do our own comdat-folding |
6212 | of types. If this is the first time we're reading this TU, and | |
6213 | the TU has an entry in .gdb_index, replace the recorded data from | |
6214 | .gdb_index with this TU. */ | |
a2ce51a0 | 6215 | |
a2ce51a0 | 6216 | find_sig_entry.signature = sig; |
976ca316 | 6217 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6218 | &find_sig_entry, INSERT); |
9a3c8263 | 6219 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6220 | |
6221 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6222 | read. Don't reassign the global entry to point to this DWO if that's |
6223 | the case. Also note that if the TU is already being read, it may not | |
6224 | have come from a DWO, the program may be a mix of Fission-compiled | |
6225 | code and non-Fission-compiled code. */ | |
6226 | ||
6227 | /* Have we already tried to read this TU? | |
6228 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6229 | needn't exist in the global table yet). */ | |
0d305d5c | 6230 | if (sig_entry != NULL && sig_entry->tu_read) |
a2ce51a0 DE |
6231 | return sig_entry; |
6232 | ||
6aa5f3a6 DE |
6233 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6234 | dwo_unit of the TU itself. */ | |
6235 | dwo_file = cu->dwo_unit->dwo_file; | |
6236 | ||
a2ce51a0 DE |
6237 | /* Ok, this is the first time we're reading this TU. */ |
6238 | if (dwo_file->tus == NULL) | |
6239 | return NULL; | |
6240 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6241 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6242 | &find_dwo_entry); | |
a2ce51a0 DE |
6243 | if (dwo_entry == NULL) |
6244 | return NULL; | |
6245 | ||
6aa5f3a6 DE |
6246 | /* If the global table doesn't have an entry for this TU, add one. */ |
6247 | if (sig_entry == NULL) | |
976ca316 | 6248 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6249 | |
976ca316 | 6250 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
0d305d5c | 6251 | sig_entry->tu_read = 1; |
a2ce51a0 DE |
6252 | return sig_entry; |
6253 | } | |
6254 | ||
a2ce51a0 DE |
6255 | /* Subroutine of lookup_signatured_type. |
6256 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6257 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6258 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6259 | |
6260 | static struct signatured_type * | |
6261 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6262 | { | |
976ca316 SM |
6263 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6264 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6265 | struct dwo_unit *dwo_entry; |
6266 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6267 | void **slot; |
a2ce51a0 | 6268 | |
976ca316 | 6269 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6270 | gdb_assert (dwp_file != NULL); |
6271 | ||
6aa5f3a6 DE |
6272 | /* If TU skeletons have been removed then we may not have read in any |
6273 | TUs yet. */ | |
976ca316 SM |
6274 | if (per_objfile->per_bfd->signatured_types == NULL) |
6275 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6276 | |
6aa5f3a6 | 6277 | find_sig_entry.signature = sig; |
976ca316 | 6278 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6279 | &find_sig_entry, INSERT); |
9a3c8263 | 6280 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6281 | |
6282 | /* Have we already tried to read this TU? | |
6283 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6284 | needn't exist in the global table yet). */ | |
6285 | if (sig_entry != NULL) | |
6286 | return sig_entry; | |
6287 | ||
a2ce51a0 DE |
6288 | if (dwp_file->tus == NULL) |
6289 | return NULL; | |
976ca316 SM |
6290 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6291 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6292 | if (dwo_entry == NULL) |
6293 | return NULL; | |
6294 | ||
976ca316 SM |
6295 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6296 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6297 | |
a2ce51a0 DE |
6298 | return sig_entry; |
6299 | } | |
6300 | ||
380bca97 | 6301 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6302 | Returns NULL if signature SIG is not present in the table. |
6303 | It is up to the caller to complain about this. */ | |
348e048f DE |
6304 | |
6305 | static struct signatured_type * | |
a2ce51a0 | 6306 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6307 | { |
976ca316 | 6308 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6309 | |
976ca316 | 6310 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6311 | { |
6312 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6313 | These cases require special processing. */ | |
976ca316 | 6314 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6315 | return lookup_dwo_signatured_type (cu, sig); |
6316 | else | |
6317 | return lookup_dwp_signatured_type (cu, sig); | |
6318 | } | |
6319 | else | |
6320 | { | |
6321 | struct signatured_type find_entry, *entry; | |
348e048f | 6322 | |
976ca316 | 6323 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6324 | return NULL; |
6325 | find_entry.signature = sig; | |
9a3c8263 | 6326 | entry = ((struct signatured_type *) |
976ca316 | 6327 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6328 | &find_entry)); |
a2ce51a0 DE |
6329 | return entry; |
6330 | } | |
348e048f | 6331 | } |
18a8505e | 6332 | |
42e7ad6c | 6333 | /* Low level DIE reading support. */ |
348e048f | 6334 | |
d85a05f0 DJ |
6335 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6336 | ||
6337 | static void | |
6338 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6339 | struct dwarf2_cu *cu, |
3019eac3 | 6340 | struct dwarf2_section_info *section, |
685af9cd TT |
6341 | struct dwo_file *dwo_file, |
6342 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6343 | { |
fceca515 | 6344 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6345 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6346 | reader->cu = cu; |
3019eac3 | 6347 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6348 | reader->die_section = section; |
6349 | reader->buffer = section->buffer; | |
f664829e | 6350 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6351 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6352 | } |
6353 | ||
c0ab21c2 | 6354 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6355 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6356 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6357 | already. |
6358 | ||
6359 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6360 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6361 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6362 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6363 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6364 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6365 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6366 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6367 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6368 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6369 | kept around for at least as long as *RESULT_READER. | |
6370 | ||
b0c7bfa9 DE |
6371 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6372 | ||
6373 | static int | |
4ab09049 | 6374 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6375 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6376 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6377 | const char *stub_comp_dir, |
b0c7bfa9 | 6378 | struct die_reader_specs *result_reader, |
d521ce57 | 6379 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6380 | struct die_info **result_comp_unit_die, |
685af9cd | 6381 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6382 | { |
976ca316 | 6383 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6384 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6385 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6386 | bfd *abfd; |
d521ce57 | 6387 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6388 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6389 | int i,num_extra_attrs; | |
6390 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6391 | struct die_info *comp_unit_die; |
6392 | ||
b0aeadb3 DE |
6393 | /* At most one of these may be provided. */ |
6394 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6395 | |
b0c7bfa9 DE |
6396 | /* These attributes aren't processed until later: |
6397 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6398 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6399 | referenced later. However, these attributes are found in the stub | |
6400 | which we won't have later. In order to not impose this complication | |
6401 | on the rest of the code, we read them here and copy them to the | |
6402 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6403 | |
6404 | stmt_list = NULL; | |
6405 | low_pc = NULL; | |
6406 | high_pc = NULL; | |
6407 | ranges = NULL; | |
6408 | comp_dir = NULL; | |
6409 | ||
6410 | if (stub_comp_unit_die != NULL) | |
6411 | { | |
6412 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6413 | DWO file. */ | |
4ab09049 | 6414 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6415 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6416 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6417 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6418 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6419 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6420 | ||
a39fdb41 | 6421 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6422 | |
2b0c7f41 SM |
6423 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
6424 | We need the value before we can process DW_AT_ranges values from the | |
6425 | DWO. */ | |
6426 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
6427 | ||
6428 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
6429 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
6430 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
6431 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
6432 | section. */ | |
6433 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 6434 | } |
a2ce51a0 DE |
6435 | else if (stub_comp_dir != NULL) |
6436 | { | |
6437 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6438 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6439 | comp_dir->name = DW_AT_comp_dir; |
6440 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6441 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6442 | } |
b0c7bfa9 DE |
6443 | |
6444 | /* Set up for reading the DWO CU/TU. */ | |
6445 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6446 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6447 | section->read (objfile); |
6448 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6449 | begin_info_ptr = info_ptr = (section->buffer |
6450 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6451 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6452 | |
4ab09049 | 6453 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6454 | { |
4ab09049 | 6455 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6456 | |
976ca316 SM |
6457 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6458 | section, dwo_abbrev_section, | |
43988095 | 6459 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6460 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6461 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6462 | { |
6463 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6464 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6465 | hex_string (sig_type->signature), |
43988095 | 6466 | hex_string (cu->header.signature), |
9d8780f0 | 6467 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6468 | bfd_get_filename (abfd)); |
6469 | } | |
9c541725 | 6470 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6471 | /* For DWOs coming from DWP files, we don't know the CU length |
6472 | nor the type's offset in the TU until now. */ | |
4057dfde | 6473 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6474 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6475 | |
6476 | /* Establish the type offset that can be used to lookup the type. | |
6477 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6478 | sig_type->type_offset_in_section |
6479 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6480 | } |
6481 | else | |
6482 | { | |
976ca316 SM |
6483 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6484 | section, dwo_abbrev_section, | |
43988095 | 6485 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6486 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6487 | /* For DWOs coming from DWP files, we don't know the CU length |
6488 | until now. */ | |
4057dfde | 6489 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6490 | } |
6491 | ||
606decb2 | 6492 | dwo_abbrev_section->read (objfile); |
685af9cd | 6493 | *result_dwo_abbrev_table |
606decb2 | 6494 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6495 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6496 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6497 | |
6498 | /* Read in the die, but leave space to copy over the attributes | |
6499 | from the stub. This has the benefit of simplifying the rest of | |
6500 | the code - all the work to maintain the illusion of a single | |
6501 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6502 | num_extra_attrs = ((stmt_list != NULL) | |
6503 | + (low_pc != NULL) | |
6504 | + (high_pc != NULL) | |
6505 | + (ranges != NULL) | |
6506 | + (comp_dir != NULL)); | |
6507 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6508 | num_extra_attrs); |
b0c7bfa9 DE |
6509 | |
6510 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6511 | comp_unit_die = *result_comp_unit_die; | |
6512 | i = comp_unit_die->num_attrs; | |
6513 | if (stmt_list != NULL) | |
6514 | comp_unit_die->attrs[i++] = *stmt_list; | |
6515 | if (low_pc != NULL) | |
6516 | comp_unit_die->attrs[i++] = *low_pc; | |
6517 | if (high_pc != NULL) | |
6518 | comp_unit_die->attrs[i++] = *high_pc; | |
6519 | if (ranges != NULL) | |
6520 | comp_unit_die->attrs[i++] = *ranges; | |
6521 | if (comp_dir != NULL) | |
6522 | comp_unit_die->attrs[i++] = *comp_dir; | |
6523 | comp_unit_die->num_attrs += num_extra_attrs; | |
6524 | ||
b4f54984 | 6525 | if (dwarf_die_debug) |
bf6af496 DE |
6526 | { |
6527 | fprintf_unfiltered (gdb_stdlog, | |
6528 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6529 | section->get_name (), |
bf6af496 DE |
6530 | (unsigned) (begin_info_ptr - section->buffer), |
6531 | bfd_get_filename (abfd)); | |
b4f54984 | 6532 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6533 | } |
6534 | ||
b0c7bfa9 DE |
6535 | /* Skip dummy compilation units. */ |
6536 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6537 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6538 | return 0; | |
6539 | ||
6540 | *result_info_ptr = info_ptr; | |
6541 | return 1; | |
6542 | } | |
6543 | ||
a084a2a6 AT |
6544 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6545 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6546 | signature is part of the header. */ | |
6547 | static gdb::optional<ULONGEST> | |
6548 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6549 | { | |
6550 | if (cu->header.version >= 5) | |
6551 | return cu->header.signature; | |
6552 | struct attribute *attr; | |
6553 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 6554 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 6555 | return gdb::optional<ULONGEST> (); |
529908cb | 6556 | return attr->as_unsigned (); |
a084a2a6 AT |
6557 | } |
6558 | ||
c0ab21c2 | 6559 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6560 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6561 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6562 | |
6563 | static struct dwo_unit * | |
4ab09049 | 6564 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6565 | { |
4ab09049 | 6566 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6567 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6568 | const char *comp_dir; |
b0c7bfa9 | 6569 | |
a2ce51a0 DE |
6570 | gdb_assert (cu != NULL); |
6571 | ||
b0c7bfa9 | 6572 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6573 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6574 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6575 | |
4ab09049 SM |
6576 | if (per_cu->is_debug_types) |
6577 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6578 | else |
6579 | { | |
a084a2a6 | 6580 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6581 | |
a084a2a6 | 6582 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6583 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6584 | " [in module %s]"), | |
4ab09049 SM |
6585 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6586 | ||
6587 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6588 | } |
6589 | ||
b0c7bfa9 DE |
6590 | return dwo_unit; |
6591 | } | |
6592 | ||
c0ab21c2 | 6593 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6594 | See it for a description of the parameters. |
fcd3b13d | 6595 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6596 | |
c0ab21c2 | 6597 | void |
9e021579 SM |
6598 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6599 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6600 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6601 | { |
a2ce51a0 | 6602 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6603 | |
6604 | /* Verify we can do the following downcast, and that we have the | |
6605 | data we need. */ | |
6606 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6607 | sig_type = (struct signatured_type *) this_cu; | |
6608 | gdb_assert (sig_type->dwo_unit != NULL); | |
6609 | ||
2e671100 SM |
6610 | dwarf2_cu *cu; |
6611 | ||
6612 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6613 | { |
2e671100 SM |
6614 | cu = existing_cu; |
6615 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6616 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6617 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6618 | } |
6619 | else | |
6620 | { | |
7188ed02 | 6621 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6622 | in per_objfile yet. */ |
7188ed02 | 6623 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 6624 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 6625 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
6626 | } |
6627 | ||
6628 | /* A future optimization, if needed, would be to use an existing | |
6629 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6630 | could share abbrev tables. */ | |
a2ce51a0 | 6631 | |
2e671100 | 6632 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6633 | NULL /* stub_comp_unit_die */, |
6634 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6635 | this, &info_ptr, |
3e225074 | 6636 | &comp_unit_die, |
c0ab21c2 | 6637 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6638 | { |
6639 | /* Dummy die. */ | |
c0ab21c2 | 6640 | dummy_p = true; |
a2ce51a0 | 6641 | } |
a2ce51a0 DE |
6642 | } |
6643 | ||
fd820528 | 6644 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6645 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6646 | |
f4dc4d17 DE |
6647 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6648 | Otherwise the table specified in the comp unit header is read in and used. | |
6649 | This is an optimization for when we already have the abbrev table. | |
6650 | ||
2e671100 SM |
6651 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
6652 | allocated. */ | |
aaa75496 | 6653 | |
ab432490 | 6654 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 6655 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 6656 | struct abbrev_table *abbrev_table, |
2e671100 | 6657 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
6658 | bool skip_partial) |
6659 | : die_reader_specs {}, | |
6751ebae | 6660 | m_this_cu (this_cu) |
c906108c | 6661 | { |
976ca316 | 6662 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 6663 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6664 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 6665 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6666 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6667 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6668 | /* Non-zero if CU currently points to a DWO file and we need to |
6669 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6670 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6671 | int rereading_dwo_cu = 0; |
c906108c | 6672 | |
b4f54984 | 6673 | if (dwarf_die_debug) |
9d8780f0 | 6674 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6675 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6676 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6677 | |
a2ce51a0 DE |
6678 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6679 | file (instead of going through the stub), short-circuit all of this. */ | |
6680 | if (this_cu->reading_dwo_directly) | |
6681 | { | |
6682 | /* Narrow down the scope of possibilities to have to understand. */ | |
6683 | gdb_assert (this_cu->is_debug_types); | |
6684 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 6685 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
6686 | return; |
6687 | } | |
6688 | ||
dee91e82 | 6689 | /* This is cheap if the section is already read in. */ |
96b79293 | 6690 | section->read (objfile); |
dee91e82 | 6691 | |
9c541725 | 6692 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6693 | |
6694 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 6695 | |
2e671100 SM |
6696 | dwarf2_cu *cu; |
6697 | ||
6698 | if (existing_cu != nullptr) | |
dee91e82 | 6699 | { |
2e671100 | 6700 | cu = existing_cu; |
42e7ad6c DE |
6701 | /* If this CU is from a DWO file we need to start over, we need to |
6702 | refetch the attributes from the skeleton CU. | |
6703 | This could be optimized by retrieving those attributes from when we | |
6704 | were here the first time: the previous comp_unit_die was stored in | |
6705 | comp_unit_obstack. But there's no data yet that we need this | |
6706 | optimization. */ | |
6707 | if (cu->dwo_unit != NULL) | |
6708 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6709 | } |
6710 | else | |
6711 | { | |
7188ed02 | 6712 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 6713 | in per_objfile yet. */ |
976ca316 SM |
6714 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
6715 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 6716 | cu = m_new_cu.get (); |
42e7ad6c | 6717 | } |
dee91e82 | 6718 | |
b0c7bfa9 | 6719 | /* Get the header. */ |
9c541725 | 6720 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6721 | { |
6722 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6723 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6724 | } |
6725 | else | |
6726 | { | |
3019eac3 | 6727 | if (this_cu->is_debug_types) |
dee91e82 | 6728 | { |
976ca316 SM |
6729 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6730 | section, abbrev_section, | |
6731 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 6732 | |
42e7ad6c DE |
6733 | /* Since per_cu is the first member of struct signatured_type, |
6734 | we can go from a pointer to one to a pointer to the other. */ | |
6735 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6736 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6737 | gdb_assert (sig_type->type_offset_in_tu |
6738 | == cu->header.type_cu_offset_in_tu); | |
6739 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6740 | |
42e7ad6c DE |
6741 | /* LENGTH has not been set yet for type units if we're |
6742 | using .gdb_index. */ | |
4057dfde | 6743 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6744 | |
6745 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6746 | sig_type->type_offset_in_section = |
6747 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6748 | |
6749 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6750 | } |
6751 | else | |
6752 | { | |
976ca316 SM |
6753 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6754 | section, abbrev_section, | |
43988095 JK |
6755 | info_ptr, |
6756 | rcuh_kind::COMPILE); | |
dee91e82 | 6757 | |
9c541725 | 6758 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
6759 | if (this_cu->length == 0) |
6760 | this_cu->length = cu->header.get_length (); | |
6761 | else | |
6762 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 6763 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6764 | } |
6765 | } | |
10b3939b | 6766 | |
6caca83c | 6767 | /* Skip dummy compilation units. */ |
dee91e82 | 6768 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6769 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6770 | { |
6771 | dummy_p = true; | |
6772 | return; | |
6773 | } | |
6caca83c | 6774 | |
433df2d4 DE |
6775 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6776 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6777 | done. */ |
f4dc4d17 | 6778 | if (abbrev_table != NULL) |
685af9cd TT |
6779 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6780 | else | |
f4dc4d17 | 6781 | { |
606decb2 | 6782 | abbrev_section->read (objfile); |
c0ab21c2 | 6783 | m_abbrev_table_holder |
606decb2 | 6784 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 6785 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6786 | } |
af703f96 | 6787 | |
dee91e82 | 6788 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6789 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6790 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6791 | |
58f0c718 | 6792 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6793 | { |
6794 | dummy_p = true; | |
6795 | return; | |
6796 | } | |
58f0c718 | 6797 | |
b0c7bfa9 | 6798 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6799 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6800 | table from the DWO file and pass the ownership over to us. It will be | |
6801 | referenced from READER, so we must make sure to free it after we're done | |
6802 | with READER. | |
6803 | ||
b0c7bfa9 DE |
6804 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6805 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6806 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6807 | if (dwo_name != nullptr) |
3019eac3 | 6808 | { |
3019eac3 | 6809 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6810 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6811 | |
3e225074 | 6812 | if (comp_unit_die->has_children) |
6a506a2d | 6813 | { |
b98664d3 | 6814 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6815 | " has children (offset %s) [in module %s]"), |
6816 | sect_offset_str (this_cu->sect_off), | |
6817 | bfd_get_filename (abfd)); | |
6a506a2d | 6818 | } |
4ab09049 | 6819 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 6820 | if (dwo_unit != NULL) |
3019eac3 | 6821 | { |
4ab09049 | 6822 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 6823 | comp_unit_die, NULL, |
c0ab21c2 | 6824 | this, &info_ptr, |
3e225074 | 6825 | &dwo_comp_unit_die, |
c0ab21c2 | 6826 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6827 | { |
6828 | /* Dummy die. */ | |
c0ab21c2 | 6829 | dummy_p = true; |
6a506a2d DE |
6830 | return; |
6831 | } | |
6832 | comp_unit_die = dwo_comp_unit_die; | |
6833 | } | |
6834 | else | |
6835 | { | |
6836 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6837 | the stub. A complaint has already been logged. There's | |
6838 | not much more we can do except pass on the stub DIE to | |
6839 | die_reader_func. We don't want to throw an error on bad | |
6840 | debug info. */ | |
3019eac3 DE |
6841 | } |
6842 | } | |
c0ab21c2 | 6843 | } |
3019eac3 | 6844 | |
6751ebae TT |
6845 | void |
6846 | cutu_reader::keep () | |
c0ab21c2 | 6847 | { |
b0c7bfa9 | 6848 | /* Done, clean up. */ |
6751ebae TT |
6849 | gdb_assert (!dummy_p); |
6850 | if (m_new_cu != NULL) | |
348e048f | 6851 | { |
7188ed02 | 6852 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 6853 | now. */ |
7188ed02 SM |
6854 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
6855 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 6856 | } |
dee91e82 DE |
6857 | } |
6858 | ||
18a8505e AT |
6859 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6860 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6861 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6862 | |
6863 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6864 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6865 | |
6866 | We fill in THIS_CU->length. | |
6867 | ||
dee91e82 | 6868 | THIS_CU->cu is always freed when done. |
3019eac3 | 6869 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6870 | to care whether it refers to the "main" CU or the DWO CU. |
6871 | ||
6872 | When parent_cu is passed, it is used to provide a default value for | |
6873 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6874 | |
ab432490 | 6875 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 6876 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
6877 | struct dwarf2_cu *parent_cu, |
6878 | struct dwo_file *dwo_file) | |
6879 | : die_reader_specs {}, | |
6880 | m_this_cu (this_cu) | |
dee91e82 | 6881 | { |
976ca316 | 6882 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 6883 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6884 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6885 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6886 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6887 | |
b4f54984 | 6888 | if (dwarf_die_debug) |
9d8780f0 | 6889 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6890 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6891 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6892 | |
976ca316 | 6893 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 6894 | |
33e80786 DE |
6895 | abbrev_section = (dwo_file != NULL |
6896 | ? &dwo_file->sections.abbrev | |
6897 | : get_abbrev_section_for_cu (this_cu)); | |
6898 | ||
dee91e82 | 6899 | /* This is cheap if the section is already read in. */ |
96b79293 | 6900 | section->read (objfile); |
dee91e82 | 6901 | |
976ca316 | 6902 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 6903 | |
9c541725 | 6904 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
6905 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
6906 | section, abbrev_section, info_ptr, | |
43988095 JK |
6907 | (this_cu->is_debug_types |
6908 | ? rcuh_kind::TYPE | |
6909 | : rcuh_kind::COMPILE)); | |
dee91e82 | 6910 | |
18a8505e AT |
6911 | if (parent_cu != nullptr) |
6912 | { | |
c0ab21c2 TT |
6913 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
6914 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 6915 | } |
4057dfde | 6916 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
6917 | |
6918 | /* Skip dummy compilation units. */ | |
6919 | if (info_ptr >= begin_info_ptr + this_cu->length | |
6920 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
6921 | { |
6922 | dummy_p = true; | |
6923 | return; | |
6924 | } | |
72bf9492 | 6925 | |
606decb2 | 6926 | abbrev_section->read (objfile); |
c0ab21c2 | 6927 | m_abbrev_table_holder |
606decb2 | 6928 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 6929 | |
c0ab21c2 TT |
6930 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
6931 | m_abbrev_table_holder.get ()); | |
3e225074 | 6932 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
6933 | } |
6934 | ||
0018ea6f DE |
6935 | \f |
6936 | /* Type Unit Groups. | |
dee91e82 | 6937 | |
0018ea6f DE |
6938 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
6939 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
6940 | so that all types coming from the same compilation (.o file) are grouped | |
6941 | together. A future step could be to put the types in the same symtab as | |
6942 | the CU the types ultimately came from. */ | |
ff013f42 | 6943 | |
f4dc4d17 DE |
6944 | static hashval_t |
6945 | hash_type_unit_group (const void *item) | |
6946 | { | |
9a3c8263 SM |
6947 | const struct type_unit_group *tu_group |
6948 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 6949 | |
094b34ac | 6950 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 6951 | } |
348e048f DE |
6952 | |
6953 | static int | |
f4dc4d17 | 6954 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 6955 | { |
9a3c8263 SM |
6956 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
6957 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 6958 | |
094b34ac | 6959 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 6960 | } |
348e048f | 6961 | |
f4dc4d17 DE |
6962 | /* Allocate a hash table for type unit groups. */ |
6963 | ||
eaa5fa8b | 6964 | static htab_up |
298e9637 | 6965 | allocate_type_unit_groups_table () |
f4dc4d17 | 6966 | { |
eaa5fa8b TT |
6967 | return htab_up (htab_create_alloc (3, |
6968 | hash_type_unit_group, | |
6969 | eq_type_unit_group, | |
0d305d5c TT |
6970 | [] (void *arg) |
6971 | { | |
6972 | type_unit_group *grp | |
6973 | = (type_unit_group *) arg; | |
6974 | delete grp; | |
6975 | }, | |
6976 | xcalloc, xfree)); | |
f4dc4d17 | 6977 | } |
dee91e82 | 6978 | |
f4dc4d17 DE |
6979 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
6980 | partial symtabs. We combine several TUs per psymtab to not let the size | |
6981 | of any one psymtab grow too big. */ | |
6982 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
6983 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 6984 | |
094b34ac | 6985 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
6986 | Create the type_unit_group object used to hold one or more TUs. */ |
6987 | ||
0d305d5c | 6988 | static std::unique_ptr<type_unit_group> |
094b34ac | 6989 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 6990 | { |
976ca316 SM |
6991 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6992 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
f4dc4d17 | 6993 | |
0d305d5c TT |
6994 | std::unique_ptr<type_unit_group> tu_group (new type_unit_group); |
6995 | tu_group->per_bfd = per_bfd; | |
f4dc4d17 | 6996 | |
1859c670 | 6997 | if (per_bfd->using_index) |
094b34ac | 6998 | { |
0d305d5c TT |
6999 | tu_group->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
7000 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7001 | } |
7002 | else | |
7003 | { | |
9c541725 | 7004 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7005 | dwarf2_psymtab *pst; |
528e1572 | 7006 | std::string name; |
094b34ac DE |
7007 | |
7008 | /* Give the symtab a useful name for debug purposes. */ | |
7009 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7010 | name = string_printf ("<type_units_%d>", |
7011 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7012 | else |
528e1572 | 7013 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7014 | |
0d305d5c TT |
7015 | pst = create_partial_symtab (tu_group.get (), per_objfile, |
7016 | name.c_str ()); | |
6d94535f | 7017 | pst->anonymous = true; |
094b34ac | 7018 | } |
f4dc4d17 | 7019 | |
094b34ac | 7020 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7021 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7022 | |
7023 | return tu_group; | |
7024 | } | |
7025 | ||
094b34ac DE |
7026 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7027 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7028 | |
7029 | static struct type_unit_group * | |
ff39bb5e | 7030 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7031 | { |
976ca316 SM |
7032 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7033 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7034 | struct type_unit_group *tu_group; |
7035 | void **slot; | |
7036 | unsigned int line_offset; | |
7037 | struct type_unit_group type_unit_group_for_lookup; | |
7038 | ||
976ca316 SM |
7039 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7040 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7041 | |
7042 | /* Do we need to create a new group, or can we use an existing one? */ | |
7043 | ||
529908cb | 7044 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7045 | { |
529908cb | 7046 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7047 | ++tu_stats->nr_symtab_sharers; |
7048 | } | |
7049 | else | |
7050 | { | |
7051 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7052 | We can do various things here like create one group per TU or | |
7053 | spread them over multiple groups to split up the expansion work. | |
7054 | To avoid worst case scenarios (too many groups or too large groups) | |
7055 | we, umm, group them in bunches. */ | |
7056 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7057 | | (tu_stats->nr_stmt_less_type_units | |
7058 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7059 | ++tu_stats->nr_stmt_less_type_units; | |
7060 | } | |
7061 | ||
094b34ac | 7062 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7063 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7064 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 | 7065 | &type_unit_group_for_lookup, INSERT); |
0d305d5c | 7066 | if (*slot == nullptr) |
f4dc4d17 | 7067 | { |
9c541725 | 7068 | sect_offset line_offset_struct = (sect_offset) line_offset; |
0d305d5c TT |
7069 | std::unique_ptr<type_unit_group> grp |
7070 | = create_type_unit_group (cu, line_offset_struct); | |
7071 | *slot = grp.release (); | |
f4dc4d17 DE |
7072 | ++tu_stats->nr_symtabs; |
7073 | } | |
7074 | ||
0d305d5c TT |
7075 | tu_group = (struct type_unit_group *) *slot; |
7076 | gdb_assert (tu_group != nullptr); | |
f4dc4d17 DE |
7077 | return tu_group; |
7078 | } | |
0018ea6f DE |
7079 | \f |
7080 | /* Partial symbol tables. */ | |
7081 | ||
7082 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7083 | ||
7084 | The caller must fill in the following details: | |
7085 | dirname, textlow, texthigh. */ | |
7086 | ||
891813be | 7087 | static dwarf2_psymtab * |
7aa104c4 SM |
7088 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7089 | dwarf2_per_objfile *per_objfile, | |
7090 | const char *name) | |
0018ea6f | 7091 | { |
0072c873 SM |
7092 | dwarf2_psymtab *pst |
7093 | = new dwarf2_psymtab (name, per_objfile->per_bfd->partial_symtabs.get (), | |
7094 | per_objfile->objfile->per_bfd, per_cu); | |
0018ea6f | 7095 | |
6d94535f | 7096 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7097 | |
7098 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7099 | per_cu->v.psymtab = pst; |
7100 | ||
7101 | return pst; | |
7102 | } | |
7103 | ||
c0ab21c2 | 7104 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7105 | |
7106 | static void | |
7107 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7108 | const gdb_byte *info_ptr, |
0018ea6f | 7109 | struct die_info *comp_unit_die, |
c0ab21c2 | 7110 | enum language pretend_language) |
0018ea6f DE |
7111 | { |
7112 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 | 7113 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
84685904 | 7114 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
7aa104c4 | 7115 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 7116 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7117 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7118 | CORE_ADDR baseaddr; |
7119 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7120 | dwarf2_psymtab *pst; |
3a2b436a | 7121 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7122 | const char *filename; |
0018ea6f | 7123 | |
0018ea6f DE |
7124 | gdb_assert (! per_cu->is_debug_types); |
7125 | ||
c0ab21c2 | 7126 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7127 | |
0018ea6f | 7128 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7129 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7130 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7131 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7132 | if (filename == NULL) | |
0018ea6f | 7133 | filename = ""; |
2e927613 TV |
7134 | else if (strcmp (filename, artificial) == 0) |
7135 | { | |
7136 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7137 | sect_offset_str (per_cu->sect_off), |
7138 | (char *) NULL)); | |
2e927613 TV |
7139 | filename = debug_filename.get (); |
7140 | } | |
0018ea6f | 7141 | |
7aa104c4 | 7142 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7143 | |
7144 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7145 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7146 | |
b3b3bada | 7147 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7148 | |
7149 | dwarf2_find_base_address (comp_unit_die, cu); | |
7150 | ||
7151 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7152 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7153 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7154 | &best_highpc, cu, pst); | |
7155 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7156 | { |
7157 | CORE_ADDR low | |
7158 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7159 | - baseaddr); | |
7160 | CORE_ADDR high | |
7161 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7162 | - baseaddr - 1); | |
7163 | /* Store the contiguous range if it is not empty; it can be | |
7164 | empty for CUs with no code. */ | |
84685904 | 7165 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 7166 | low, high, pst); |
79748972 | 7167 | } |
0018ea6f DE |
7168 | |
7169 | /* Check if comp unit has_children. | |
7170 | If so, read the rest of the partial symbols from this comp unit. | |
7171 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7172 | if (comp_unit_die->has_children) |
0018ea6f DE |
7173 | { |
7174 | struct partial_die_info *first_die; | |
7175 | CORE_ADDR lowpc, highpc; | |
7176 | ||
7177 | lowpc = ((CORE_ADDR) -1); | |
7178 | highpc = ((CORE_ADDR) 0); | |
7179 | ||
7180 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7181 | ||
7182 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7183 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7184 | |
7185 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7186 | complaints from `maint check'. */ | |
7187 | if (lowpc == ((CORE_ADDR) -1)) | |
7188 | lowpc = highpc; | |
7189 | ||
7190 | /* If the compilation unit didn't have an explicit address range, | |
7191 | then use the information extracted from its child dies. */ | |
e385593e | 7192 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7193 | { |
7194 | best_lowpc = lowpc; | |
7195 | best_highpc = highpc; | |
7196 | } | |
7197 | } | |
4ae976d1 | 7198 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7199 | best_lowpc + baseaddr) |
7200 | - baseaddr); | |
4ae976d1 | 7201 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7202 | best_highpc + baseaddr) |
7203 | - baseaddr); | |
0018ea6f | 7204 | |
ae7754b2 | 7205 | pst->end (); |
0018ea6f | 7206 | |
ae640021 | 7207 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7208 | { |
7209 | int i; | |
ae640021 | 7210 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7211 | |
7212 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7213 | post-pass. */ | |
7214 | pst->number_of_dependencies = len; | |
a9342b62 | 7215 | pst->dependencies |
84685904 | 7216 | = per_bfd->partial_symtabs->allocate_dependencies (len); |
ae640021 AB |
7217 | for (i = 0; i < len; ++i) |
7218 | { | |
7219 | pst->dependencies[i] | |
7220 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7221 | } | |
0018ea6f | 7222 | |
ae640021 | 7223 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7224 | } |
7225 | ||
7226 | /* Get the list of files included in the current compilation unit, | |
7227 | and build a psymtab for each of them. */ | |
7228 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7229 | ||
6f738b01 SM |
7230 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7231 | ", %d global, %d static syms", | |
7232 | per_cu->is_debug_types ? "type" : "comp", | |
7233 | sect_offset_str (per_cu->sect_off), | |
7234 | paddress (gdbarch, pst->text_low (objfile)), | |
7235 | paddress (gdbarch, pst->text_high (objfile)), | |
7236 | (int) pst->global_psymbols.size (), | |
7237 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7238 | } |
7239 | ||
7240 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7241 | Process compilation unit THIS_CU for a psymtab. */ | |
7242 | ||
7243 | static void | |
ab432490 SM |
7244 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7245 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7246 | bool want_partial_unit, |
b93601f3 | 7247 | enum language pretend_language) |
0018ea6f DE |
7248 | { |
7249 | /* If this compilation unit was already read in, free the | |
7250 | cached copy in order to read it in again. This is | |
7251 | necessary because we skipped some symbols when we first | |
7252 | read in the compilation unit (see load_partial_dies). | |
7253 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7254 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7255 | |
2e671100 | 7256 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7257 | |
58990295 TV |
7258 | switch (reader.comp_unit_die->tag) |
7259 | { | |
7260 | case DW_TAG_compile_unit: | |
7261 | this_cu->unit_type = DW_UT_compile; | |
7262 | break; | |
7263 | case DW_TAG_partial_unit: | |
7264 | this_cu->unit_type = DW_UT_partial; | |
7265 | break; | |
e77b0004 TV |
7266 | case DW_TAG_type_unit: |
7267 | this_cu->unit_type = DW_UT_type; | |
7268 | break; | |
58990295 | 7269 | default: |
702cf3f5 AB |
7270 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), |
7271 | dwarf_tag_name (reader.comp_unit_die->tag), | |
7272 | sect_offset_str (reader.cu->per_cu->sect_off), | |
7273 | objfile_name (per_objfile->objfile)); | |
58990295 TV |
7274 | } |
7275 | ||
c0ab21c2 | 7276 | if (reader.dummy_p) |
f1902523 | 7277 | { |
c0ab21c2 | 7278 | /* Nothing. */ |
f1902523 | 7279 | } |
c0ab21c2 | 7280 | else if (this_cu->is_debug_types) |
3e225074 TT |
7281 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7282 | reader.comp_unit_die); | |
135f5437 TT |
7283 | else if (want_partial_unit |
7284 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7285 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7286 | reader.comp_unit_die, | |
c0ab21c2 | 7287 | pretend_language); |
0018ea6f | 7288 | |
7188ed02 | 7289 | this_cu->lang = reader.cu->language; |
58990295 | 7290 | |
0018ea6f | 7291 | /* Age out any secondary CUs. */ |
7188ed02 | 7292 | per_objfile->age_comp_units (); |
0018ea6f | 7293 | } |
f4dc4d17 DE |
7294 | |
7295 | /* Reader function for build_type_psymtabs. */ | |
7296 | ||
7297 | static void | |
7298 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7299 | const gdb_byte *info_ptr, |
3e225074 | 7300 | struct die_info *type_unit_die) |
f4dc4d17 | 7301 | { |
976ca316 | 7302 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7303 | struct dwarf2_cu *cu = reader->cu; |
7304 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7305 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7306 | struct type_unit_group *tu_group; |
7307 | struct attribute *attr; | |
7308 | struct partial_die_info *first_die; | |
7309 | CORE_ADDR lowpc, highpc; | |
891813be | 7310 | dwarf2_psymtab *pst; |
f4dc4d17 | 7311 | |
0186c6a7 DE |
7312 | gdb_assert (per_cu->is_debug_types); |
7313 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7314 | |
3e225074 | 7315 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7316 | return; |
7317 | ||
052c8bb8 | 7318 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7319 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7320 | |
df07e2c7 | 7321 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7322 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7323 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7324 | |
7325 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7326 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7327 | pst->anonymous = true; |
f4dc4d17 DE |
7328 | |
7329 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7330 | ||
7331 | lowpc = (CORE_ADDR) -1; | |
7332 | highpc = (CORE_ADDR) 0; | |
7333 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7334 | ||
ae7754b2 | 7335 | pst->end (); |
f4dc4d17 DE |
7336 | } |
7337 | ||
73051182 DE |
7338 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7339 | ||
7340 | struct tu_abbrev_offset | |
7341 | { | |
b2bdb8cf SM |
7342 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7343 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7344 | {} | |
7345 | ||
7346 | signatured_type *sig_type; | |
73051182 DE |
7347 | sect_offset abbrev_offset; |
7348 | }; | |
7349 | ||
b8efb248 | 7350 | /* Helper routine for build_type_psymtabs, passed to std::sort. */ |
73051182 | 7351 | |
484cf504 TT |
7352 | static bool |
7353 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7354 | const struct tu_abbrev_offset &b) | |
73051182 | 7355 | { |
484cf504 | 7356 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7357 | } |
7358 | ||
7359 | /* Efficiently read all the type units. | |
73051182 DE |
7360 | |
7361 | The efficiency is because we sort TUs by the abbrev table they use and | |
7362 | only read each abbrev table once. In one program there are 200K TUs | |
7363 | sharing 8K abbrev tables. | |
7364 | ||
7365 | The main purpose of this function is to support building the | |
5989a64e | 7366 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7367 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7368 | can collapse the search space by grouping them by stmt_list. | |
7369 | The savings can be significant, in the same program from above the 200K TUs | |
7370 | share 8K stmt_list tables. | |
7371 | ||
7372 | FUNC is expected to call get_type_unit_group, which will create the | |
7373 | struct type_unit_group if necessary and add it to | |
5989a64e | 7374 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7375 | |
7376 | static void | |
b8efb248 | 7377 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
73051182 | 7378 | { |
976ca316 | 7379 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7380 | abbrev_table_up abbrev_table; |
73051182 | 7381 | sect_offset abbrev_offset; |
73051182 DE |
7382 | |
7383 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7384 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7385 | |
91eea9cc | 7386 | if (per_objfile->per_bfd->tu_stats.nr_tus == 0) |
73051182 DE |
7387 | return; |
7388 | ||
7389 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7390 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7391 | read each abbrev table in. | |
7392 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7393 | This is simpler and efficient enough for now. | |
7394 | ||
7395 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7396 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7397 | stmt_list value too so in practice this should work well. | |
7398 | ||
7399 | The basic algorithm here is: | |
7400 | ||
7401 | sort TUs by abbrev table | |
7402 | for each TU with same abbrev table: | |
7403 | read abbrev table if first user | |
7404 | read TU top level DIE | |
7405 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7406 | call FUNC */ | |
7407 | ||
6f738b01 | 7408 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 | 7409 | |
91eea9cc | 7410 | /* Sort in a separate table to maintain the order of all_comp_units |
73051182 | 7411 | for .gdb_index: TU indices directly index all_type_units. */ |
b2bdb8cf | 7412 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
91eea9cc | 7413 | sorted_by_abbrev.reserve (per_objfile->per_bfd->tu_stats.nr_tus); |
b2bdb8cf | 7414 | |
91eea9cc TT |
7415 | for (const auto &cu : per_objfile->per_bfd->all_comp_units) |
7416 | { | |
7417 | if (cu->is_debug_types) | |
7418 | { | |
7419 | auto sig_type = static_cast<signatured_type *> (cu.get ()); | |
7420 | sorted_by_abbrev.emplace_back | |
7421 | (sig_type, read_abbrev_offset (per_objfile, sig_type->section, | |
7422 | sig_type->sect_off)); | |
7423 | } | |
7424 | } | |
73051182 | 7425 | |
484cf504 TT |
7426 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7427 | sort_tu_by_abbrev_offset); | |
73051182 | 7428 | |
9c541725 | 7429 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7430 | |
b2bdb8cf | 7431 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7432 | { |
73051182 DE |
7433 | /* Switch to the next abbrev table if necessary. */ |
7434 | if (abbrev_table == NULL | |
b2bdb8cf | 7435 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7436 | { |
b2bdb8cf | 7437 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7438 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7439 | abbrev_table = |
606decb2 | 7440 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7441 | ++tu_stats->nr_uniq_abbrev_tables; |
7442 | } | |
7443 | ||
0d305d5c | 7444 | cutu_reader reader (tu.sig_type, per_objfile, |
2e671100 | 7445 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7446 | if (!reader.dummy_p) |
7447 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7448 | reader.comp_unit_die); |
73051182 | 7449 | } |
6aa5f3a6 | 7450 | } |
73051182 | 7451 | |
6aa5f3a6 DE |
7452 | /* Print collected type unit statistics. */ |
7453 | ||
7454 | static void | |
976ca316 | 7455 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7456 | { |
976ca316 | 7457 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7458 | |
6f738b01 | 7459 | dwarf_read_debug_printf ("Type unit statistics:"); |
91eea9cc | 7460 | dwarf_read_debug_printf (" %d TUs", tu_stats->nr_tus); |
6f738b01 SM |
7461 | dwarf_read_debug_printf (" %d uniq abbrev tables", |
7462 | tu_stats->nr_uniq_abbrev_tables); | |
7463 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7464 | tu_stats->nr_symtabs); | |
7465 | dwarf_read_debug_printf (" %d symtab sharers", | |
7466 | tu_stats->nr_symtab_sharers); | |
7467 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7468 | tu_stats->nr_stmt_less_type_units); | |
7469 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7470 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7471 | } |
7472 | ||
f4dc4d17 DE |
7473 | /* Traversal function for build_type_psymtabs. */ |
7474 | ||
7475 | static int | |
7476 | build_type_psymtab_dependencies (void **slot, void *info) | |
7477 | { | |
976ca316 | 7478 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
84685904 | 7479 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
f4dc4d17 | 7480 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
0d305d5c | 7481 | dwarf2_psymtab *pst = tu_group->v.psymtab; |
df07e2c7 | 7482 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7483 | int i; |
7484 | ||
7485 | gdb_assert (len > 0); | |
0d305d5c | 7486 | gdb_assert (tu_group->type_unit_group_p ()); |
f4dc4d17 DE |
7487 | |
7488 | pst->number_of_dependencies = len; | |
84685904 | 7489 | pst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7490 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7491 | { |
df07e2c7 | 7492 | struct signatured_type *iter = tu_group->tus->at (i); |
0d305d5c TT |
7493 | gdb_assert (iter->is_debug_types); |
7494 | pst->dependencies[i] = iter->v.psymtab; | |
796a7ff8 | 7495 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7496 | } |
7497 | ||
df07e2c7 AB |
7498 | delete tu_group->tus; |
7499 | tu_group->tus = nullptr; | |
348e048f DE |
7500 | |
7501 | return 1; | |
7502 | } | |
7503 | ||
6aa5f3a6 DE |
7504 | /* Traversal function for process_skeletonless_type_unit. |
7505 | Read a TU in a DWO file and build partial symbols for it. */ | |
7506 | ||
7507 | static int | |
7508 | process_skeletonless_type_unit (void **slot, void *info) | |
7509 | { | |
7510 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7511 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7512 | struct signatured_type find_entry, *entry; |
7513 | ||
7514 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7515 | ||
976ca316 SM |
7516 | if (per_objfile->per_bfd->signatured_types == NULL) |
7517 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7518 | |
7519 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7520 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7521 | &find_entry, INSERT); |
6aa5f3a6 DE |
7522 | /* If we've already seen this type there's nothing to do. What's happening |
7523 | is we're doing our own version of comdat-folding here. */ | |
7524 | if (*slot != NULL) | |
7525 | return 1; | |
7526 | ||
b8efb248 | 7527 | /* This does the job that create_all_comp_units would have done for |
6aa5f3a6 | 7528 | this TU. */ |
976ca316 SM |
7529 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7530 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7531 | *slot = entry; |
7532 | ||
b8efb248 | 7533 | /* This does the job that build_type_psymtabs would have done. */ |
0d305d5c | 7534 | cutu_reader reader (entry, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7535 | if (!reader.dummy_p) |
7536 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7537 | reader.comp_unit_die); |
6aa5f3a6 DE |
7538 | |
7539 | return 1; | |
7540 | } | |
7541 | ||
7542 | /* Traversal function for process_skeletonless_type_units. */ | |
7543 | ||
7544 | static int | |
7545 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7546 | { | |
7547 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7548 | ||
7549 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7550 | htab_traverse_noresize (dwo_file->tus.get (), |
7551 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7552 | |
7553 | return 1; | |
7554 | } | |
7555 | ||
7556 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7557 | This is needed in case a TU was emitted without its skeleton. | |
7558 | Note: This can't be done until we know what all the DWO files are. */ | |
7559 | ||
7560 | static void | |
976ca316 | 7561 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
7562 | { |
7563 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
7564 | if (get_dwp_file (per_objfile) == NULL |
7565 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 7566 | { |
976ca316 | 7567 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7568 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 7569 | per_objfile); |
6aa5f3a6 | 7570 | } |
348e048f DE |
7571 | } |
7572 | ||
ed2dc618 | 7573 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7574 | |
7575 | static void | |
976ca316 | 7576 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 7577 | { |
0d305d5c | 7578 | for (const auto &per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 7579 | { |
891813be | 7580 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7581 | |
36586728 TT |
7582 | if (pst == NULL) |
7583 | continue; | |
7584 | ||
b76e467d | 7585 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7586 | { |
7587 | /* Set the 'user' field only if it is not already set. */ | |
7588 | if (pst->dependencies[j]->user == NULL) | |
7589 | pst->dependencies[j]->user = pst; | |
7590 | } | |
7591 | } | |
7592 | } | |
7593 | ||
93311388 DE |
7594 | /* Build the partial symbol table by doing a quick pass through the |
7595 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7596 | |
93311388 | 7597 | static void |
976ca316 | 7598 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 7599 | { |
976ca316 | 7600 | struct objfile *objfile = per_objfile->objfile; |
84685904 | 7601 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
93311388 | 7602 | |
6f738b01 SM |
7603 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
7604 | objfile_name (objfile)); | |
45cfd468 | 7605 | |
76935768 | 7606 | scoped_restore restore_reading_psyms |
bab287cd | 7607 | = make_scoped_restore (&per_bfd->reading_partial_symbols, true); |
98bfdba5 | 7608 | |
84685904 | 7609 | per_bfd->info.read (objfile); |
91c24f0a | 7610 | |
93311388 DE |
7611 | /* Any cached compilation units will be linked by the per-objfile |
7612 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 7613 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 7614 | |
976ca316 | 7615 | create_all_comp_units (per_objfile); |
b8efb248 | 7616 | build_type_psymtabs (per_objfile); |
c906108c | 7617 | |
60606b2c TT |
7618 | /* Create a temporary address map on a temporary obstack. We later |
7619 | copy this to the final obstack. */ | |
8268c778 | 7620 | auto_obstack temp_obstack; |
791afaa2 TT |
7621 | |
7622 | scoped_restore save_psymtabs_addrmap | |
84685904 | 7623 | = make_scoped_restore (&per_bfd->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7624 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7625 | |
0d305d5c | 7626 | for (const auto &per_cu : per_bfd->all_comp_units) |
3d5afab3 TV |
7627 | { |
7628 | if (per_cu->v.psymtab != NULL) | |
7629 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7630 | continue; | |
0d305d5c | 7631 | process_psymtab_comp_unit (per_cu.get (), per_objfile, false, |
ab432490 | 7632 | language_minimal); |
3d5afab3 | 7633 | } |
ff013f42 | 7634 | |
6aa5f3a6 | 7635 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 7636 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
7637 | |
7638 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
84685904 | 7639 | if (per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7640 | { |
84685904 | 7641 | htab_traverse_noresize (per_bfd->type_unit_groups.get (), |
976ca316 | 7642 | build_type_psymtab_dependencies, per_objfile); |
6aa5f3a6 DE |
7643 | } |
7644 | ||
6f738b01 | 7645 | if (dwarf_read_debug > 0) |
976ca316 | 7646 | print_tu_stats (per_objfile); |
6aa5f3a6 | 7647 | |
976ca316 | 7648 | set_partial_user (per_objfile); |
95554aad | 7649 | |
84685904 TT |
7650 | per_bfd->partial_symtabs->psymtabs_addrmap |
7651 | = addrmap_create_fixed (per_bfd->partial_symtabs->psymtabs_addrmap, | |
7652 | per_bfd->partial_symtabs->obstack ()); | |
791afaa2 TT |
7653 | /* At this point we want to keep the address map. */ |
7654 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7655 | |
6f738b01 SM |
7656 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
7657 | objfile_name (objfile)); | |
ae038cb0 DJ |
7658 | } |
7659 | ||
dee91e82 DE |
7660 | /* Load the partial DIEs for a secondary CU into memory. |
7661 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7662 | |
dee91e82 | 7663 | static void |
ab432490 | 7664 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
7665 | dwarf2_per_objfile *per_objfile, |
7666 | dwarf2_cu *existing_cu) | |
dee91e82 | 7667 | { |
2e671100 | 7668 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
7669 | |
7670 | if (!reader.dummy_p) | |
7671 | { | |
7672 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7673 | language_minimal); | |
7674 | ||
7675 | /* Check if comp unit has_children. | |
7676 | If so, read the rest of the partial symbols from this comp unit. | |
7677 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7678 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7679 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7680 | |
7681 | reader.keep (); | |
c0ab21c2 | 7682 | } |
ae038cb0 DJ |
7683 | } |
7684 | ||
ae038cb0 | 7685 | static void |
976ca316 | 7686 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 7687 | struct dwarf2_section_info *section, |
f1902523 | 7688 | struct dwarf2_section_info *abbrev_section, |
b8efb248 TT |
7689 | unsigned int is_dwz, |
7690 | htab_up &types_htab, | |
7691 | rcuh_kind section_kind) | |
ae038cb0 | 7692 | { |
d521ce57 | 7693 | const gdb_byte *info_ptr; |
976ca316 | 7694 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 7695 | |
6f738b01 SM |
7696 | dwarf_read_debug_printf ("Reading %s for %s", |
7697 | section->get_name (), | |
7698 | section->get_file_name ()); | |
bf6af496 | 7699 | |
96b79293 | 7700 | section->read (objfile); |
ae038cb0 | 7701 | |
36586728 | 7702 | info_ptr = section->buffer; |
6e70227d | 7703 | |
36586728 | 7704 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7705 | { |
0d305d5c | 7706 | std::unique_ptr<dwarf2_per_cu_data> this_cu; |
ae038cb0 | 7707 | |
9c541725 | 7708 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7709 | |
f1902523 | 7710 | comp_unit_head cu_header; |
976ca316 | 7711 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 7712 | abbrev_section, info_ptr, |
b8efb248 | 7713 | section_kind); |
ae038cb0 DJ |
7714 | |
7715 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 7716 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 7717 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
7718 | else |
7719 | { | |
b8efb248 TT |
7720 | if (types_htab == nullptr) |
7721 | types_htab = allocate_signatured_type_table (); | |
7722 | ||
976ca316 | 7723 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b8efb248 | 7724 | signatured_type *sig_ptr = sig_type.get (); |
f1902523 JK |
7725 | sig_type->signature = cu_header.signature; |
7726 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
0d305d5c | 7727 | this_cu = std::move (sig_type); |
b8efb248 TT |
7728 | |
7729 | void **slot = htab_find_slot (types_htab.get (), sig_ptr, INSERT); | |
7730 | gdb_assert (slot != nullptr); | |
7731 | if (*slot != nullptr) | |
7732 | complaint (_("debug type entry at offset %s is duplicate to" | |
7733 | " the entry at offset %s, signature %s"), | |
7734 | sect_offset_str (sect_off), | |
7735 | sect_offset_str (sig_ptr->sect_off), | |
7736 | hex_string (sig_ptr->signature)); | |
7737 | *slot = sig_ptr; | |
f1902523 JK |
7738 | } |
7739 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7740 | this_cu->sect_off = sect_off; |
f1902523 | 7741 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7742 | this_cu->is_dwz = is_dwz; |
8a0459fd | 7743 | this_cu->section = section; |
ae038cb0 | 7744 | |
ae038cb0 | 7745 | info_ptr = info_ptr + this_cu->length; |
0d305d5c | 7746 | per_objfile->per_bfd->all_comp_units.push_back (std::move (this_cu)); |
ae038cb0 | 7747 | } |
36586728 TT |
7748 | } |
7749 | ||
7750 | /* Create a list of all compilation units in OBJFILE. | |
7751 | This is only done for -readnow and building partial symtabs. */ | |
7752 | ||
7753 | static void | |
976ca316 | 7754 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 7755 | { |
b8efb248 TT |
7756 | htab_up types_htab; |
7757 | ||
976ca316 | 7758 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, |
b8efb248 TT |
7759 | &per_objfile->per_bfd->abbrev, 0, |
7760 | types_htab, rcuh_kind::COMPILE); | |
7761 | for (dwarf2_section_info §ion : per_objfile->per_bfd->types) | |
7762 | read_comp_units_from_section (per_objfile, §ion, | |
7763 | &per_objfile->per_bfd->abbrev, 0, | |
7764 | types_htab, rcuh_kind::TYPE); | |
36586728 | 7765 | |
976ca316 | 7766 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 7767 | if (dwz != NULL) |
b8efb248 TT |
7768 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1, |
7769 | types_htab, rcuh_kind::COMPILE); | |
7770 | ||
7771 | per_objfile->per_bfd->signatured_types = std::move (types_htab); | |
c906108c SS |
7772 | } |
7773 | ||
5734ee8b | 7774 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7775 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7776 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7777 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7778 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7779 | |
72bf9492 DJ |
7780 | static void |
7781 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7782 | CORE_ADDR *highpc, int set_addrmap, |
7783 | struct dwarf2_cu *cu) | |
c906108c | 7784 | { |
72bf9492 | 7785 | struct partial_die_info *pdi; |
c906108c | 7786 | |
91c24f0a DC |
7787 | /* Now, march along the PDI's, descending into ones which have |
7788 | interesting children but skipping the children of the other ones, | |
7789 | until we reach the end of the compilation unit. */ | |
c906108c | 7790 | |
72bf9492 | 7791 | pdi = first_die; |
91c24f0a | 7792 | |
72bf9492 DJ |
7793 | while (pdi != NULL) |
7794 | { | |
52356b79 | 7795 | pdi->fixup (cu); |
c906108c | 7796 | |
f55ee35c | 7797 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7798 | children, so we need to look at them. Ditto for anonymous |
7799 | enums. */ | |
933c6fe4 | 7800 | |
7d00ffec | 7801 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7802 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7803 | || pdi->tag == DW_TAG_imported_unit |
7804 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7805 | { |
72bf9492 | 7806 | switch (pdi->tag) |
c906108c SS |
7807 | { |
7808 | case DW_TAG_subprogram: | |
b1dc1806 | 7809 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7810 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
7811 | if (cu->language == language_cplus) |
7812 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
7813 | set_addrmap, cu); | |
c906108c | 7814 | break; |
72929c62 | 7815 | case DW_TAG_constant: |
c906108c SS |
7816 | case DW_TAG_variable: |
7817 | case DW_TAG_typedef: | |
91c24f0a | 7818 | case DW_TAG_union_type: |
317d2668 TV |
7819 | if (!pdi->is_declaration |
7820 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 7821 | { |
72bf9492 | 7822 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7823 | } |
7824 | break; | |
c906108c | 7825 | case DW_TAG_class_type: |
680b30c7 | 7826 | case DW_TAG_interface_type: |
c906108c | 7827 | case DW_TAG_structure_type: |
72bf9492 | 7828 | if (!pdi->is_declaration) |
c906108c | 7829 | { |
72bf9492 | 7830 | add_partial_symbol (pdi, cu); |
c906108c | 7831 | } |
b7fee5a3 KS |
7832 | if ((cu->language == language_rust |
7833 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7834 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7835 | set_addrmap, cu); | |
c906108c | 7836 | break; |
91c24f0a | 7837 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7838 | if (!pdi->is_declaration) |
7839 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7840 | break; |
7841 | case DW_TAG_base_type: | |
dda83cd7 | 7842 | case DW_TAG_subrange_type: |
c906108c | 7843 | /* File scope base type definitions are added to the partial |
dda83cd7 | 7844 | symbol table. */ |
72bf9492 | 7845 | add_partial_symbol (pdi, cu); |
c906108c | 7846 | break; |
d9fa45fe | 7847 | case DW_TAG_namespace: |
cdc07690 | 7848 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7849 | break; |
5d7cb8df | 7850 | case DW_TAG_module: |
59c35742 AB |
7851 | if (!pdi->is_declaration) |
7852 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7853 | break; |
95554aad TT |
7854 | case DW_TAG_imported_unit: |
7855 | { | |
7856 | struct dwarf2_per_cu_data *per_cu; | |
7857 | ||
f4dc4d17 DE |
7858 | /* For now we don't handle imported units in type units. */ |
7859 | if (cu->per_cu->is_debug_types) | |
7860 | { | |
7861 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7862 | " supported in type units [in module %s]"), | |
5e22e966 | 7863 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
7864 | } |
7865 | ||
e3b94546 | 7866 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 7867 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
7868 | |
7869 | /* Go read the partial unit, if needed. */ | |
7870 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
7871 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
7872 | cu->language); | |
95554aad | 7873 | |
ae640021 | 7874 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7875 | } |
7876 | break; | |
74921315 KS |
7877 | case DW_TAG_imported_declaration: |
7878 | add_partial_symbol (pdi, cu); | |
7879 | break; | |
c906108c SS |
7880 | default: |
7881 | break; | |
7882 | } | |
7883 | } | |
7884 | ||
72bf9492 DJ |
7885 | /* If the die has a sibling, skip to the sibling. */ |
7886 | ||
7887 | pdi = pdi->die_sibling; | |
7888 | } | |
7889 | } | |
7890 | ||
7891 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7892 | |
72bf9492 | 7893 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7894 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7895 | Enumerators are an exception; they use the scope of their parent |
7896 | enumeration type, i.e. the name of the enumeration type is not | |
7897 | prepended to the enumerator. | |
91c24f0a | 7898 | |
72bf9492 DJ |
7899 | There are two complexities. One is DW_AT_specification; in this |
7900 | case "parent" means the parent of the target of the specification, | |
7901 | instead of the direct parent of the DIE. The other is compilers | |
7902 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7903 | the fully qualified name of structure types from their members' | |
7904 | linkage names. This must be done using the DIE's children rather | |
7905 | than the children of any DW_AT_specification target. We only need | |
7906 | to do this for structures at the top level, i.e. if the target of | |
7907 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
7908 | have a parent. */ | |
7909 | ||
7910 | /* Compute the scope prefix associated with PDI's parent, in | |
7911 | compilation unit CU. The result will be allocated on CU's | |
7912 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
7913 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 7914 | static const char * |
72bf9492 DJ |
7915 | partial_die_parent_scope (struct partial_die_info *pdi, |
7916 | struct dwarf2_cu *cu) | |
7917 | { | |
15d034d0 | 7918 | const char *grandparent_scope; |
72bf9492 | 7919 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 7920 | |
72bf9492 DJ |
7921 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
7922 | then this means the parent of the specification DIE. */ | |
7923 | ||
7924 | real_pdi = pdi; | |
72bf9492 | 7925 | while (real_pdi->has_specification) |
fb816e8b | 7926 | { |
122cf0f2 AB |
7927 | auto res = find_partial_die (real_pdi->spec_offset, |
7928 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
7929 | real_pdi = res.pdi; |
7930 | cu = res.cu; | |
7931 | } | |
72bf9492 DJ |
7932 | |
7933 | parent = real_pdi->die_parent; | |
7934 | if (parent == NULL) | |
7935 | return NULL; | |
7936 | ||
7937 | if (parent->scope_set) | |
7938 | return parent->scope; | |
7939 | ||
52356b79 | 7940 | parent->fixup (cu); |
72bf9492 | 7941 | |
10b3939b | 7942 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 7943 | |
acebe513 UW |
7944 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
7945 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
7946 | Work around this problem here. */ | |
7947 | if (cu->language == language_cplus | |
6e70227d | 7948 | && parent->tag == DW_TAG_namespace |
7d00ffec | 7949 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
7950 | && grandparent_scope == NULL) |
7951 | { | |
7952 | parent->scope = NULL; | |
7953 | parent->scope_set = 1; | |
7954 | return NULL; | |
7955 | } | |
7956 | ||
0a4b0913 | 7957 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
7958 | if (pdi->tag == DW_TAG_enumerator) |
7959 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
7960 | parent->scope = grandparent_scope; | |
7961 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 7962 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
7963 | || parent->tag == DW_TAG_structure_type |
7964 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 7965 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 7966 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
7967 | || parent->tag == DW_TAG_enumeration_type |
7968 | || (cu->language == language_fortran | |
7969 | && parent->tag == DW_TAG_subprogram | |
7970 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
7971 | { |
7972 | if (grandparent_scope == NULL) | |
7d00ffec | 7973 | parent->scope = parent->name (cu); |
72bf9492 | 7974 | else |
3e43a32a MS |
7975 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
7976 | grandparent_scope, | |
7d00ffec | 7977 | parent->name (cu), 0, cu); |
72bf9492 | 7978 | } |
72bf9492 DJ |
7979 | else |
7980 | { | |
7981 | /* FIXME drow/2004-04-01: What should we be doing with | |
7982 | function-local names? For partial symbols, we should probably be | |
7983 | ignoring them. */ | |
fa9c3fa0 TT |
7984 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
7985 | dwarf_tag_name (parent->tag), | |
7986 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 7987 | parent->scope = grandparent_scope; |
c906108c SS |
7988 | } |
7989 | ||
72bf9492 DJ |
7990 | parent->scope_set = 1; |
7991 | return parent->scope; | |
7992 | } | |
7993 | ||
7994 | /* Return the fully scoped name associated with PDI, from compilation unit | |
7995 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 7996 | |
43816ebc | 7997 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
7998 | partial_die_full_name (struct partial_die_info *pdi, |
7999 | struct dwarf2_cu *cu) | |
8000 | { | |
15d034d0 | 8001 | const char *parent_scope; |
72bf9492 | 8002 | |
98bfdba5 PA |
8003 | /* If this is a template instantiation, we can not work out the |
8004 | template arguments from partial DIEs. So, unfortunately, we have | |
8005 | to go through the full DIEs. At least any work we do building | |
8006 | types here will be reused if full symbols are loaded later. */ | |
8007 | if (pdi->has_template_arguments) | |
8008 | { | |
52356b79 | 8009 | pdi->fixup (cu); |
98bfdba5 | 8010 | |
7d00ffec | 8011 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8012 | { |
8013 | struct die_info *die; | |
8014 | struct attribute attr; | |
8015 | struct dwarf2_cu *ref_cu = cu; | |
8016 | ||
b64f50a1 | 8017 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8018 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8019 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8020 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8021 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8022 | ||
43816ebc | 8023 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8024 | } |
8025 | } | |
8026 | ||
72bf9492 DJ |
8027 | parent_scope = partial_die_parent_scope (pdi, cu); |
8028 | if (parent_scope == NULL) | |
8029 | return NULL; | |
8030 | else | |
43816ebc | 8031 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8032 | pdi->name (cu), |
8033 | 0, cu)); | |
c906108c SS |
8034 | } |
8035 | ||
8036 | static void | |
72bf9492 | 8037 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8038 | { |
976ca316 SM |
8039 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8040 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8041 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8042 | CORE_ADDR addr = 0; |
15d034d0 | 8043 | const char *actual_name = NULL; |
e142c38c DJ |
8044 | CORE_ADDR baseaddr; |
8045 | ||
b3b3bada | 8046 | baseaddr = objfile->text_section_offset (); |
c906108c | 8047 | |
43816ebc TT |
8048 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8049 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8050 | if (built_actual_name != NULL) |
43816ebc | 8051 | actual_name = built_actual_name.get (); |
63d06c5c | 8052 | |
72bf9492 | 8053 | if (actual_name == NULL) |
7d00ffec | 8054 | actual_name = pdi->name (cu); |
72bf9492 | 8055 | |
76e288d1 TT |
8056 | partial_symbol psymbol; |
8057 | memset (&psymbol, 0, sizeof (psymbol)); | |
8058 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8059 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8060 | |
8061 | /* The code below indicates that the psymbol should be installed by | |
8062 | setting this. */ | |
8063 | gdb::optional<psymbol_placement> where; | |
8064 | ||
c906108c SS |
8065 | switch (pdi->tag) |
8066 | { | |
b1dc1806 | 8067 | case DW_TAG_inlined_subroutine: |
c906108c | 8068 | case DW_TAG_subprogram: |
79748972 TT |
8069 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8070 | - baseaddr); | |
0a4b0913 AB |
8071 | if (pdi->is_external |
8072 | || cu->language == language_ada | |
8073 | || (cu->language == language_fortran | |
8074 | && pdi->die_parent != NULL | |
8075 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8076 | { | |
dda83cd7 SM |
8077 | /* Normally, only "external" DIEs are part of the global scope. |
8078 | But in Ada and Fortran, we want to be able to access nested | |
8079 | procedures globally. So all Ada and Fortran subprograms are | |
8080 | stored in the global scope. */ | |
76e288d1 | 8081 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8082 | } |
8083 | else | |
76e288d1 TT |
8084 | where = psymbol_placement::STATIC; |
8085 | ||
8086 | psymbol.domain = VAR_DOMAIN; | |
8087 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8088 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8089 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8090 | |
8091 | if (pdi->main_subprogram && actual_name != NULL) | |
8092 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8093 | break; |
72929c62 | 8094 | case DW_TAG_constant: |
76e288d1 TT |
8095 | psymbol.domain = VAR_DOMAIN; |
8096 | psymbol.aclass = LOC_STATIC; | |
8097 | where = (pdi->is_external | |
8098 | ? psymbol_placement::GLOBAL | |
8099 | : psymbol_placement::STATIC); | |
72929c62 | 8100 | break; |
c906108c | 8101 | case DW_TAG_variable: |
95554aad TT |
8102 | if (pdi->d.locdesc) |
8103 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8104 | |
95554aad | 8105 | if (pdi->d.locdesc |
caac4577 | 8106 | && addr == 0 |
976ca316 | 8107 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8108 | { |
8109 | /* A global or static variable may also have been stripped | |
8110 | out by the linker if unused, in which case its address | |
8111 | will be nullified; do not add such variables into partial | |
8112 | symbol table then. */ | |
8113 | } | |
8114 | else if (pdi->is_external) | |
c906108c SS |
8115 | { |
8116 | /* Global Variable. | |
8117 | Don't enter into the minimal symbol tables as there is | |
8118 | a minimal symbol table entry from the ELF symbols already. | |
8119 | Enter into partial symbol table if it has a location | |
8120 | descriptor or a type. | |
8121 | If the location descriptor is missing, new_symbol will create | |
8122 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8123 | be determined from the minimal symbol table whenever the variable | |
8124 | is referenced. | |
8125 | The address for the partial symbol table entry is not | |
8126 | used by GDB, but it comes in handy for debugging partial symbol | |
8127 | table building. */ | |
8128 | ||
95554aad | 8129 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8130 | { |
8131 | psymbol.domain = VAR_DOMAIN; | |
8132 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8133 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8134 | psymbol.ginfo.value.address = addr; |
8135 | where = psymbol_placement::GLOBAL; | |
8136 | } | |
c906108c SS |
8137 | } |
8138 | else | |
8139 | { | |
ff908ebf AW |
8140 | int has_loc = pdi->d.locdesc != NULL; |
8141 | ||
8142 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8143 | without location descriptors or constant values). */ | |
8144 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8145 | return; |
ff908ebf | 8146 | |
76e288d1 TT |
8147 | psymbol.domain = VAR_DOMAIN; |
8148 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8149 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8150 | if (has_loc) |
8151 | psymbol.ginfo.value.address = addr; | |
8152 | where = psymbol_placement::STATIC; | |
c906108c SS |
8153 | } |
8154 | break; | |
d8f62e84 | 8155 | case DW_TAG_array_type: |
c906108c SS |
8156 | case DW_TAG_typedef: |
8157 | case DW_TAG_base_type: | |
a02abb62 | 8158 | case DW_TAG_subrange_type: |
76e288d1 TT |
8159 | psymbol.domain = VAR_DOMAIN; |
8160 | psymbol.aclass = LOC_TYPEDEF; | |
8161 | where = psymbol_placement::STATIC; | |
c906108c | 8162 | break; |
74921315 | 8163 | case DW_TAG_imported_declaration: |
72bf9492 | 8164 | case DW_TAG_namespace: |
76e288d1 TT |
8165 | psymbol.domain = VAR_DOMAIN; |
8166 | psymbol.aclass = LOC_TYPEDEF; | |
8167 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8168 | break; |
530e8392 | 8169 | case DW_TAG_module: |
a5fd13a9 | 8170 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8171 | available without any name. If so, we skip the module as it |
8172 | doesn't bring any value. */ | |
a5fd13a9 | 8173 | if (actual_name != nullptr) |
76e288d1 TT |
8174 | { |
8175 | psymbol.domain = MODULE_DOMAIN; | |
8176 | psymbol.aclass = LOC_TYPEDEF; | |
8177 | where = psymbol_placement::GLOBAL; | |
8178 | } | |
530e8392 | 8179 | break; |
c906108c | 8180 | case DW_TAG_class_type: |
680b30c7 | 8181 | case DW_TAG_interface_type: |
c906108c SS |
8182 | case DW_TAG_structure_type: |
8183 | case DW_TAG_union_type: | |
8184 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8185 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8186 | about "Structure, Union, and Class Type Entries": "An incomplete |
8187 | structure, union or class type is represented by a structure, | |
8188 | union or class entry that does not have a byte size attribute | |
8189 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8190 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8191 | return; |
fa4028e9 | 8192 | |
63d06c5c DC |
8193 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8194 | static vs. global. */ | |
76e288d1 TT |
8195 | psymbol.domain = STRUCT_DOMAIN; |
8196 | psymbol.aclass = LOC_TYPEDEF; | |
8197 | where = (cu->language == language_cplus | |
8198 | ? psymbol_placement::GLOBAL | |
8199 | : psymbol_placement::STATIC); | |
c906108c SS |
8200 | break; |
8201 | case DW_TAG_enumerator: | |
76e288d1 TT |
8202 | psymbol.domain = VAR_DOMAIN; |
8203 | psymbol.aclass = LOC_CONST; | |
8204 | where = (cu->language == language_cplus | |
8205 | ? psymbol_placement::GLOBAL | |
8206 | : psymbol_placement::STATIC); | |
c906108c SS |
8207 | break; |
8208 | default: | |
8209 | break; | |
8210 | } | |
76e288d1 TT |
8211 | |
8212 | if (where.has_value ()) | |
8213 | { | |
f049a313 TT |
8214 | if (built_actual_name != nullptr) |
8215 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8216 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8217 | psymbol.ginfo.set_linkage_name (actual_name); | |
8218 | else | |
8219 | { | |
8220 | psymbol.ginfo.set_demangled_name (actual_name, | |
8221 | &objfile->objfile_obstack); | |
8222 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8223 | } | |
7b249e47 TT |
8224 | cu->per_cu->v.psymtab->add_psymbol |
8225 | (psymbol, *where, per_objfile->per_bfd->partial_symtabs.get (), | |
8226 | objfile); | |
76e288d1 | 8227 | } |
c906108c SS |
8228 | } |
8229 | ||
5c4e30ca DC |
8230 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8231 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8232 | the name of the enclosing namespace. */ | |
91c24f0a | 8233 | |
72bf9492 DJ |
8234 | static void |
8235 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8236 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8237 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8238 | { |
72bf9492 | 8239 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8240 | |
72bf9492 | 8241 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8242 | |
8243 | /* Now scan partial symbols in that namespace. */ | |
8244 | ||
91c24f0a | 8245 | if (pdi->has_children) |
cdc07690 | 8246 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8247 | } |
8248 | ||
5d7cb8df JK |
8249 | /* Read a partial die corresponding to a Fortran module. */ |
8250 | ||
8251 | static void | |
8252 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8253 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8254 | { |
530e8392 KB |
8255 | /* Add a symbol for the namespace. */ |
8256 | ||
8257 | add_partial_symbol (pdi, cu); | |
8258 | ||
f55ee35c | 8259 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8260 | |
8261 | if (pdi->has_children) | |
cdc07690 | 8262 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8263 | } |
8264 | ||
b1dc1806 XR |
8265 | /* Read a partial die corresponding to a subprogram or an inlined |
8266 | subprogram and create a partial symbol for that subprogram. | |
8267 | When the CU language allows it, this routine also defines a partial | |
8268 | symbol for each nested subprogram that this subprogram contains. | |
8269 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8270 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8271 | |
cdc07690 YQ |
8272 | PDI may also be a lexical block, in which case we simply search |
8273 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8274 | Again, this is only performed when the CU language allows this |
8275 | type of definitions. */ | |
8276 | ||
8277 | static void | |
8278 | add_partial_subprogram (struct partial_die_info *pdi, | |
8279 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8280 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8281 | { |
b1dc1806 | 8282 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8283 | { |
8284 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8285 | { |
8286 | if (pdi->lowpc < *lowpc) | |
8287 | *lowpc = pdi->lowpc; | |
8288 | if (pdi->highpc > *highpc) | |
8289 | *highpc = pdi->highpc; | |
cdc07690 | 8290 | if (set_addrmap) |
5734ee8b | 8291 | { |
5e22e966 | 8292 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 8293 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 8294 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8295 | CORE_ADDR baseaddr; |
b926417a TT |
8296 | CORE_ADDR this_highpc; |
8297 | CORE_ADDR this_lowpc; | |
5734ee8b | 8298 | |
b3b3bada | 8299 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8300 | this_lowpc |
8301 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8302 | pdi->lowpc + baseaddr) | |
8303 | - baseaddr); | |
8304 | this_highpc | |
8305 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8306 | pdi->highpc + baseaddr) | |
8307 | - baseaddr); | |
84685904 | 8308 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
b926417a | 8309 | this_lowpc, this_highpc - 1, |
9291a0cd | 8310 | cu->per_cu->v.psymtab); |
5734ee8b | 8311 | } |
dda83cd7 | 8312 | } |
481860b3 GB |
8313 | |
8314 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8315 | { | |
dda83cd7 | 8316 | if (!pdi->is_declaration) |
e8d05480 JB |
8317 | /* Ignore subprogram DIEs that do not have a name, they are |
8318 | illegal. Do not emit a complaint at this point, we will | |
8319 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8320 | if (pdi->name (cu)) |
e8d05480 | 8321 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8322 | } |
bc30ff58 | 8323 | } |
6e70227d | 8324 | |
bc30ff58 JB |
8325 | if (! pdi->has_children) |
8326 | return; | |
8327 | ||
0a4b0913 | 8328 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8329 | { |
8330 | pdi = pdi->die_child; | |
8331 | while (pdi != NULL) | |
8332 | { | |
52356b79 | 8333 | pdi->fixup (cu); |
bc30ff58 | 8334 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8335 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8336 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8337 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8338 | pdi = pdi->die_sibling; |
8339 | } | |
8340 | } | |
8341 | } | |
8342 | ||
91c24f0a DC |
8343 | /* Read a partial die corresponding to an enumeration type. */ |
8344 | ||
72bf9492 DJ |
8345 | static void |
8346 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8347 | struct dwarf2_cu *cu) | |
91c24f0a | 8348 | { |
72bf9492 | 8349 | struct partial_die_info *pdi; |
91c24f0a | 8350 | |
7d00ffec | 8351 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8352 | add_partial_symbol (enum_pdi, cu); |
8353 | ||
8354 | pdi = enum_pdi->die_child; | |
8355 | while (pdi) | |
91c24f0a | 8356 | { |
7d00ffec | 8357 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8358 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8359 | else |
72bf9492 DJ |
8360 | add_partial_symbol (pdi, cu); |
8361 | pdi = pdi->die_sibling; | |
91c24f0a | 8362 | } |
91c24f0a DC |
8363 | } |
8364 | ||
6caca83c CC |
8365 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8366 | ||
8367 | static unsigned int | |
d521ce57 | 8368 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8369 | { |
8370 | unsigned int bytes_read; | |
8371 | ||
8372 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8373 | } | |
8374 | ||
685af9cd TT |
8375 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8376 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8377 | ||
4bb7a0a7 DJ |
8378 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8379 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8380 | the initial number. */ | |
8381 | ||
7c32eebb | 8382 | static const struct abbrev_info * |
685af9cd TT |
8383 | peek_die_abbrev (const die_reader_specs &reader, |
8384 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8385 | { |
685af9cd | 8386 | dwarf2_cu *cu = reader.cu; |
0280fdcc | 8387 | bfd *abfd = reader.abfd; |
685af9cd TT |
8388 | unsigned int abbrev_number |
8389 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8390 | |
8391 | if (abbrev_number == 0) | |
8392 | return NULL; | |
8393 | ||
7c32eebb TT |
8394 | const abbrev_info *abbrev |
8395 | = reader.abbrev_table->lookup_abbrev (abbrev_number); | |
4bb7a0a7 DJ |
8396 | if (!abbrev) |
8397 | { | |
422b9917 | 8398 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8399 | " at offset %s [in module %s]"), |
422b9917 | 8400 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8401 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8402 | } |
8403 | ||
8404 | return abbrev; | |
8405 | } | |
8406 | ||
93311388 DE |
8407 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8408 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8409 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8410 | ||
d521ce57 TT |
8411 | static const gdb_byte * |
8412 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8413 | { |
4bb7a0a7 DJ |
8414 | while (1) |
8415 | { | |
685af9cd | 8416 | unsigned int bytes_read; |
7c32eebb TT |
8417 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
8418 | &bytes_read); | |
685af9cd | 8419 | |
4bb7a0a7 DJ |
8420 | if (abbrev == NULL) |
8421 | return info_ptr + bytes_read; | |
8422 | else | |
dee91e82 | 8423 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8424 | } |
8425 | } | |
8426 | ||
93311388 DE |
8427 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8428 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8429 | abbrev corresponding to that skipped uleb128 should be passed in |
8430 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8431 | children. */ | |
8432 | ||
d521ce57 TT |
8433 | static const gdb_byte * |
8434 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
7c32eebb | 8435 | const struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8436 | { |
8437 | unsigned int bytes_read; | |
8438 | struct attribute attr; | |
dee91e82 DE |
8439 | bfd *abfd = reader->abfd; |
8440 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8441 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8442 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8443 | unsigned int form, i; |
8444 | ||
8445 | for (i = 0; i < abbrev->num_attrs; i++) | |
8446 | { | |
8447 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8448 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8449 | { | |
7a5f294d | 8450 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8451 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8452 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8453 | else |
b9502d3f | 8454 | { |
0826b30a | 8455 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8456 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8457 | |
8458 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8459 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8460 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8461 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8462 | else |
8463 | return sibling_ptr; | |
8464 | } | |
4bb7a0a7 DJ |
8465 | } |
8466 | ||
8467 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8468 | form = abbrev->attrs[i].form; | |
8469 | skip_attribute: | |
8470 | switch (form) | |
8471 | { | |
4bb7a0a7 | 8472 | case DW_FORM_ref_addr: |
ae411497 TT |
8473 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8474 | and later it is offset sized. */ | |
8475 | if (cu->header.version == 2) | |
8476 | info_ptr += cu->header.addr_size; | |
8477 | else | |
8478 | info_ptr += cu->header.offset_size; | |
8479 | break; | |
36586728 TT |
8480 | case DW_FORM_GNU_ref_alt: |
8481 | info_ptr += cu->header.offset_size; | |
8482 | break; | |
ae411497 | 8483 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8484 | info_ptr += cu->header.addr_size; |
8485 | break; | |
8486 | case DW_FORM_data1: | |
8487 | case DW_FORM_ref1: | |
8488 | case DW_FORM_flag: | |
8fe0f950 | 8489 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8490 | info_ptr += 1; |
8491 | break; | |
2dc7f7b3 | 8492 | case DW_FORM_flag_present: |
43988095 | 8493 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8494 | break; |
4bb7a0a7 DJ |
8495 | case DW_FORM_data2: |
8496 | case DW_FORM_ref2: | |
8fe0f950 | 8497 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8498 | info_ptr += 2; |
8499 | break; | |
8fe0f950 AT |
8500 | case DW_FORM_strx3: |
8501 | info_ptr += 3; | |
8502 | break; | |
4bb7a0a7 DJ |
8503 | case DW_FORM_data4: |
8504 | case DW_FORM_ref4: | |
8fe0f950 | 8505 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8506 | info_ptr += 4; |
8507 | break; | |
8508 | case DW_FORM_data8: | |
8509 | case DW_FORM_ref8: | |
55f1336d | 8510 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8511 | info_ptr += 8; |
8512 | break; | |
0224619f JK |
8513 | case DW_FORM_data16: |
8514 | info_ptr += 16; | |
8515 | break; | |
4bb7a0a7 | 8516 | case DW_FORM_string: |
9b1c24c8 | 8517 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8518 | info_ptr += bytes_read; |
8519 | break; | |
2dc7f7b3 | 8520 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8521 | case DW_FORM_strp: |
36586728 | 8522 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8523 | info_ptr += cu->header.offset_size; |
8524 | break; | |
2dc7f7b3 | 8525 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8526 | case DW_FORM_block: |
8527 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8528 | info_ptr += bytes_read; | |
8529 | break; | |
8530 | case DW_FORM_block1: | |
8531 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8532 | break; | |
8533 | case DW_FORM_block2: | |
8534 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8535 | break; | |
8536 | case DW_FORM_block4: | |
8537 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8538 | break; | |
336d760d | 8539 | case DW_FORM_addrx: |
cf532bd1 | 8540 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8541 | case DW_FORM_sdata: |
8542 | case DW_FORM_udata: | |
8543 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8544 | case DW_FORM_GNU_addr_index: |
8545 | case DW_FORM_GNU_str_index: | |
18a8505e | 8546 | case DW_FORM_rnglistx: |
41144253 | 8547 | case DW_FORM_loclistx: |
d521ce57 | 8548 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8549 | break; |
8550 | case DW_FORM_indirect: | |
8551 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8552 | info_ptr += bytes_read; | |
8553 | /* We need to continue parsing from here, so just go back to | |
8554 | the top. */ | |
8555 | goto skip_attribute; | |
8556 | ||
8557 | default: | |
3e43a32a MS |
8558 | error (_("Dwarf Error: Cannot handle %s " |
8559 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8560 | dwarf_form_name (form), |
8561 | bfd_get_filename (abfd)); | |
8562 | } | |
8563 | } | |
8564 | ||
8565 | if (abbrev->has_children) | |
dee91e82 | 8566 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8567 | else |
8568 | return info_ptr; | |
8569 | } | |
8570 | ||
93311388 | 8571 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8572 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8573 | |
d521ce57 | 8574 | static const gdb_byte * |
dee91e82 DE |
8575 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8576 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8577 | const gdb_byte *info_ptr) |
91c24f0a DC |
8578 | { |
8579 | /* Do we know the sibling already? */ | |
72bf9492 | 8580 | |
91c24f0a DC |
8581 | if (orig_pdi->sibling) |
8582 | return orig_pdi->sibling; | |
8583 | ||
8584 | /* Are there any children to deal with? */ | |
8585 | ||
8586 | if (!orig_pdi->has_children) | |
8587 | return info_ptr; | |
8588 | ||
4bb7a0a7 | 8589 | /* Skip the children the long way. */ |
91c24f0a | 8590 | |
dee91e82 | 8591 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8592 | } |
8593 | ||
257e7a09 | 8594 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8595 | not NULL. */ |
c906108c | 8596 | |
891813be TT |
8597 | void |
8598 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8599 | { |
976ca316 | 8600 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 8601 | |
976ca316 | 8602 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 8603 | |
077cbab2 TT |
8604 | /* If this psymtab is constructed from a debug-only objfile, the |
8605 | has_section_at_zero flag will not necessarily be correct. We | |
8606 | can get the correct value for this flag by looking at the data | |
8607 | associated with the (presumably stripped) associated objfile. */ | |
8608 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8609 | { |
976ca316 | 8610 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 8611 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 8612 | |
976ca316 SM |
8613 | per_objfile->per_bfd->has_section_at_zero |
8614 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8615 | } |
98bfdba5 | 8616 | |
8566b89b | 8617 | expand_psymtab (objfile); |
95554aad | 8618 | |
976ca316 | 8619 | process_cu_includes (per_objfile); |
c906108c | 8620 | } |
9cdd5dbd DE |
8621 | \f |
8622 | /* Reading in full CUs. */ | |
c906108c | 8623 | |
10b3939b DJ |
8624 | /* Add PER_CU to the queue. */ |
8625 | ||
8626 | static void | |
120ce1b5 SM |
8627 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8628 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8629 | enum language pretend_language) |
10b3939b | 8630 | { |
10b3939b | 8631 | per_cu->queued = 1; |
08ac5771 SM |
8632 | |
8633 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
8634 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
8635 | } |
8636 | ||
616c069a SM |
8637 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
8638 | ||
89e63ee4 DE |
8639 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
8640 | dependency. | |
69d751e3 | 8641 | |
616c069a SM |
8642 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
8643 | DIEs, false otherwise. | |
8644 | ||
8645 | Explanation: there is an invariant that if a CU is queued for expansion | |
8646 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
8647 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
8648 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
8649 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
8650 | invariant is respected. | |
8651 | ||
8652 | The caller is therefore not required to load the CU's DIEs (we return false) | |
8653 | if: | |
8654 | ||
8655 | - the CU is already expanded, and therefore does not get enqueued | |
8656 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
8657 | ||
8658 | Note that the caller should not use this function's return value as an | |
8659 | indicator of whether the CU's DIEs are loaded right now, it should check | |
8660 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
8661 | |
8662 | static int | |
89e63ee4 | 8663 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8664 | dwarf2_per_cu_data *per_cu, |
8665 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8666 | enum language pretend_language) |
8667 | { | |
8668 | /* We may arrive here during partial symbol reading, if we need full | |
8669 | DIEs to process an unusual case (e.g. template arguments). Do | |
8670 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8671 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 8672 | { |
7188ed02 SM |
8673 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8674 | ||
8675 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
8676 | return 1; |
8677 | return 0; | |
8678 | } | |
8679 | ||
8680 | /* Mark the dependence relation so that we don't flush PER_CU | |
8681 | too early. */ | |
89e63ee4 DE |
8682 | if (dependent_cu != NULL) |
8683 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8684 | |
8685 | /* If it's already on the queue, we have nothing to do. */ | |
8686 | if (per_cu->queued) | |
de53369b SM |
8687 | { |
8688 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
8689 | loaded. */ | |
8690 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
8691 | |
8692 | /* If the CU is queued for expansion, it should not already be | |
8693 | expanded. */ | |
8694 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
8695 | ||
8696 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
8697 | return 0; |
8698 | } | |
0907af0c | 8699 | |
616c069a SM |
8700 | bool queued = false; |
8701 | if (!per_objfile->symtab_set_p (per_cu)) | |
8702 | { | |
8703 | /* Add it to the queue. */ | |
8704 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
8705 | queued = true; | |
8706 | } | |
8707 | ||
0907af0c DE |
8708 | /* If the compilation unit is already loaded, just mark it as |
8709 | used. */ | |
7188ed02 SM |
8710 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8711 | if (cu != nullptr) | |
616c069a | 8712 | cu->last_used = 0; |
0907af0c | 8713 | |
616c069a SM |
8714 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
8715 | and the DIEs are not already loaded. */ | |
8716 | return queued && cu == nullptr; | |
0907af0c DE |
8717 | } |
8718 | ||
10b3939b DJ |
8719 | /* Process the queue. */ |
8720 | ||
8721 | static void | |
976ca316 | 8722 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 8723 | { |
6f738b01 SM |
8724 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
8725 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 8726 | |
03dd20cc DJ |
8727 | /* The queue starts out with one item, but following a DIE reference |
8728 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 8729 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 8730 | { |
08ac5771 | 8731 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 8732 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 8733 | |
976ca316 | 8734 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 8735 | { |
976ca316 | 8736 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 8737 | |
7188ed02 SM |
8738 | /* Skip dummy CUs. */ |
8739 | if (cu != nullptr) | |
73be47f5 | 8740 | { |
7188ed02 SM |
8741 | unsigned int debug_print_threshold; |
8742 | char buf[100]; | |
8743 | ||
8744 | if (per_cu->is_debug_types) | |
8745 | { | |
8746 | struct signatured_type *sig_type = | |
8747 | (struct signatured_type *) per_cu; | |
8748 | ||
8749 | sprintf (buf, "TU %s at offset %s", | |
8750 | hex_string (sig_type->signature), | |
8751 | sect_offset_str (per_cu->sect_off)); | |
8752 | /* There can be 100s of TUs. | |
8753 | Only print them in verbose mode. */ | |
8754 | debug_print_threshold = 2; | |
8755 | } | |
8756 | else | |
8757 | { | |
8758 | sprintf (buf, "CU at offset %s", | |
8759 | sect_offset_str (per_cu->sect_off)); | |
8760 | debug_print_threshold = 1; | |
8761 | } | |
247f5c4f | 8762 | |
7188ed02 | 8763 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8764 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 8765 | |
7188ed02 SM |
8766 | if (per_cu->is_debug_types) |
8767 | process_full_type_unit (cu, item.pretend_language); | |
8768 | else | |
8769 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 8770 | |
7188ed02 | 8771 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 8772 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 8773 | } |
f4dc4d17 | 8774 | } |
10b3939b | 8775 | |
7188ed02 | 8776 | per_cu->queued = 0; |
08ac5771 | 8777 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
8778 | } |
8779 | ||
6f738b01 SM |
8780 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
8781 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
8782 | } |
8783 | ||
10b3939b DJ |
8784 | /* Read in full symbols for PST, and anything it depends on. */ |
8785 | ||
8566b89b TT |
8786 | void |
8787 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8788 | { |
af758d11 | 8789 | gdb_assert (!readin_p (objfile)); |
95554aad | 8790 | |
17ee85fc TT |
8791 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
8792 | free_cached_comp_units freer (per_objfile); | |
48993951 | 8793 | expand_dependencies (objfile); |
aaa75496 | 8794 | |
97a1449a | 8795 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 8796 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
8797 | } |
8798 | ||
af758d11 SM |
8799 | /* See psympriv.h. */ |
8800 | ||
8801 | bool | |
8802 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
8803 | { | |
8804 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8805 | return per_objfile->symtab_set_p (per_cu_data); | |
8806 | } | |
8807 | ||
8808 | /* See psympriv.h. */ | |
8809 | ||
8810 | compunit_symtab * | |
8811 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
8812 | { | |
8813 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
8814 | return per_objfile->get_symtab (per_cu_data); | |
8815 | } | |
8816 | ||
dee91e82 DE |
8817 | /* Trivial hash function for die_info: the hash value of a DIE |
8818 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8819 | |
dee91e82 DE |
8820 | static hashval_t |
8821 | die_hash (const void *item) | |
10b3939b | 8822 | { |
9a3c8263 | 8823 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8824 | |
9c541725 | 8825 | return to_underlying (die->sect_off); |
dee91e82 | 8826 | } |
63d06c5c | 8827 | |
dee91e82 DE |
8828 | /* Trivial comparison function for die_info structures: two DIEs |
8829 | are equal if they have the same offset. */ | |
98bfdba5 | 8830 | |
dee91e82 DE |
8831 | static int |
8832 | die_eq (const void *item_lhs, const void *item_rhs) | |
8833 | { | |
9a3c8263 SM |
8834 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8835 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8836 | |
9c541725 | 8837 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8838 | } |
c906108c | 8839 | |
4a636814 SM |
8840 | /* Load the DIEs associated with PER_CU into memory. |
8841 | ||
8842 | In some cases, the caller, while reading partial symbols, will need to load | |
8843 | the full symbols for the CU for some reason. It will already have a | |
8844 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
8845 | rather than creating a new one. */ | |
c906108c | 8846 | |
dee91e82 | 8847 | static void |
ab432490 SM |
8848 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
8849 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 8850 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
8851 | bool skip_partial, |
8852 | enum language pretend_language) | |
dee91e82 | 8853 | { |
c0ab21c2 TT |
8854 | gdb_assert (! this_cu->is_debug_types); |
8855 | ||
7188ed02 | 8856 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
8857 | if (reader.dummy_p) |
8858 | return; | |
8859 | ||
8860 | struct dwarf2_cu *cu = reader.cu; | |
8861 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8862 | |
dee91e82 DE |
8863 | gdb_assert (cu->die_hash == NULL); |
8864 | cu->die_hash = | |
8865 | htab_create_alloc_ex (cu->header.length / 12, | |
8866 | die_hash, | |
8867 | die_eq, | |
8868 | NULL, | |
8869 | &cu->comp_unit_obstack, | |
8870 | hashtab_obstack_allocate, | |
8871 | dummy_obstack_deallocate); | |
e142c38c | 8872 | |
3e225074 | 8873 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8874 | reader.comp_unit_die->child |
8875 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8876 | &info_ptr, reader.comp_unit_die); | |
8877 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8878 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8879 | |
8880 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8881 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8882 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8883 | or we won't be able to build types correctly. |
8884 | Similarly, if we do not read the producer, we can not apply | |
8885 | producer-specific interpretation. */ | |
c0ab21c2 | 8886 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8887 | |
8888 | reader.keep (); | |
10b3939b DJ |
8889 | } |
8890 | ||
3da10d80 KS |
8891 | /* Add a DIE to the delayed physname list. */ |
8892 | ||
8893 | static void | |
8894 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8895 | const char *name, struct die_info *die, | |
8896 | struct dwarf2_cu *cu) | |
8897 | { | |
8898 | struct delayed_method_info mi; | |
8899 | mi.type = type; | |
8900 | mi.fnfield_index = fnfield_index; | |
8901 | mi.index = index; | |
8902 | mi.name = name; | |
8903 | mi.die = die; | |
c89b44cd | 8904 | cu->method_list.push_back (mi); |
3da10d80 KS |
8905 | } |
8906 | ||
3693fdb3 PA |
8907 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8908 | "const" / "volatile". If so, decrements LEN by the length of the | |
8909 | modifier and return true. Otherwise return false. */ | |
8910 | ||
8911 | template<size_t N> | |
8912 | static bool | |
8913 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8914 | { | |
8915 | size_t mod_len = sizeof (mod) - 1; | |
8916 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8917 | { | |
8918 | len -= mod_len; | |
8919 | return true; | |
8920 | } | |
8921 | return false; | |
8922 | } | |
8923 | ||
3da10d80 KS |
8924 | /* Compute the physnames of any methods on the CU's method list. |
8925 | ||
8926 | The computation of method physnames is delayed in order to avoid the | |
8927 | (bad) condition that one of the method's formal parameters is of an as yet | |
8928 | incomplete type. */ | |
8929 | ||
8930 | static void | |
8931 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8932 | { | |
3693fdb3 | 8933 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8934 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8935 | return; |
8936 | gdb_assert (cu->language == language_cplus); | |
8937 | ||
52941706 | 8938 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8939 | { |
1d06ead6 | 8940 | const char *physname; |
3da10d80 | 8941 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8942 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8943 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8944 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8945 | = physname ? physname : ""; |
3693fdb3 PA |
8946 | |
8947 | /* Since there's no tag to indicate whether a method is a | |
8948 | const/volatile overload, extract that information out of the | |
8949 | demangled name. */ | |
8950 | if (physname != NULL) | |
8951 | { | |
8952 | size_t len = strlen (physname); | |
8953 | ||
8954 | while (1) | |
8955 | { | |
8956 | if (physname[len] == ')') /* shortcut */ | |
8957 | break; | |
8958 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8959 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8960 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8961 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8962 | else |
8963 | break; | |
8964 | } | |
8965 | } | |
3da10d80 | 8966 | } |
c89b44cd TT |
8967 | |
8968 | /* The list is no longer needed. */ | |
8969 | cu->method_list.clear (); | |
3da10d80 KS |
8970 | } |
8971 | ||
a766d390 DE |
8972 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8973 | and it's not clear if/how imported objects will appear. | |
8974 | To keep Go support simple until that's worked out, | |
8975 | go back through what we've read and create something usable. | |
8976 | We could do this while processing each DIE, and feels kinda cleaner, | |
8977 | but that way is more invasive. | |
8978 | This is to, for example, allow the user to type "p var" or "b main" | |
8979 | without having to specify the package name, and allow lookups | |
8980 | of module.object to work in contexts that use the expression | |
8981 | parser. */ | |
8982 | ||
8983 | static void | |
8984 | fixup_go_packaging (struct dwarf2_cu *cu) | |
8985 | { | |
421d1616 | 8986 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
8987 | struct pending *list; |
8988 | int i; | |
8989 | ||
c24bdb02 | 8990 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
8991 | list != NULL; |
8992 | list = list->next) | |
a766d390 DE |
8993 | { |
8994 | for (i = 0; i < list->nsyms; ++i) | |
8995 | { | |
8996 | struct symbol *sym = list->symbol[i]; | |
8997 | ||
c1b5c1eb | 8998 | if (sym->language () == language_go |
a766d390 DE |
8999 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9000 | { | |
421d1616 TT |
9001 | gdb::unique_xmalloc_ptr<char> this_package_name |
9002 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9003 | |
9004 | if (this_package_name == NULL) | |
9005 | continue; | |
9006 | if (package_name == NULL) | |
421d1616 | 9007 | package_name = std::move (this_package_name); |
a766d390 DE |
9008 | else |
9009 | { | |
5e22e966 | 9010 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9011 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9012 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9013 | (symbol_symtab (sym) != NULL |
9014 | ? symtab_to_filename_for_display | |
9015 | (symbol_symtab (sym)) | |
e3b94546 | 9016 | : objfile_name (objfile)), |
421d1616 | 9017 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9018 | } |
9019 | } | |
9020 | } | |
9021 | } | |
9022 | ||
9023 | if (package_name != NULL) | |
9024 | { | |
5e22e966 | 9025 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9026 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9027 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9028 | saved_package_name); | |
a766d390 DE |
9029 | struct symbol *sym; |
9030 | ||
8c14c3a3 | 9031 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9032 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9033 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9034 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9035 | e.g., "main" finds the "main" module and not C's main(). */ | |
9036 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9037 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9038 | SYMBOL_TYPE (sym) = type; |
9039 | ||
c24bdb02 | 9040 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9041 | } |
9042 | } | |
9043 | ||
c9317f21 TT |
9044 | /* Allocate a fully-qualified name consisting of the two parts on the |
9045 | obstack. */ | |
9046 | ||
9047 | static const char * | |
9048 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9049 | { | |
9050 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9051 | } | |
9052 | ||
9c6a1327 TT |
9053 | /* A helper that allocates a variant part to attach to a Rust enum |
9054 | type. OBSTACK is where the results should be allocated. TYPE is | |
9055 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9056 | discriminant. It must be the index of one of the fields of TYPE, |
9057 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9058 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9059 | no default. RANGES is indexed by "effective" field number (the | |
9060 | field index, but omitting the discriminant and default fields) and | |
9061 | must hold the discriminant values used by the variants. Note that | |
9062 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9063 | already allocated on it, or static. */ | |
c9317f21 | 9064 | |
9c6a1327 TT |
9065 | static void |
9066 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9067 | int discriminant_index, int default_index, | |
9068 | gdb::array_view<discriminant_range> ranges) | |
9069 | { | |
57d02173 TT |
9070 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9071 | gdb_assert (discriminant_index == -1 | |
9072 | || (discriminant_index >= 0 | |
9073 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9074 | gdb_assert (default_index == -1 |
1f704f76 | 9075 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9076 | |
9c6a1327 | 9077 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9078 | int n_variants = type->num_fields (); |
9079 | if (discriminant_index != -1) | |
9080 | --n_variants; | |
c9317f21 | 9081 | |
9c6a1327 TT |
9082 | variant *variants = new (obstack) variant[n_variants]; |
9083 | int var_idx = 0; | |
9084 | int range_idx = 0; | |
1f704f76 | 9085 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9086 | { |
9087 | if (i == discriminant_index) | |
9088 | continue; | |
c9317f21 | 9089 | |
9c6a1327 TT |
9090 | variants[var_idx].first_field = i; |
9091 | variants[var_idx].last_field = i + 1; | |
9092 | ||
9093 | /* The default field does not need a range, but other fields do. | |
9094 | We skipped the discriminant above. */ | |
9095 | if (i != default_index) | |
9096 | { | |
9097 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9098 | ++range_idx; | |
9099 | } | |
c9317f21 | 9100 | |
9c6a1327 TT |
9101 | ++var_idx; |
9102 | } | |
9103 | ||
9104 | gdb_assert (range_idx == ranges.size ()); | |
9105 | gdb_assert (var_idx == n_variants); | |
9106 | ||
9107 | variant_part *part = new (obstack) variant_part; | |
9108 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9109 | /* If there is no discriminant, then whether it is signed is of no |
9110 | consequence. */ | |
9111 | part->is_unsigned | |
9112 | = (discriminant_index == -1 | |
9113 | ? false | |
c6d940a9 | 9114 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9115 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9116 | ||
9117 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9118 | gdb::array_view<variant_part> *prop_value | |
9119 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9120 | |
9c6a1327 | 9121 | struct dynamic_prop prop; |
8c2e4e06 | 9122 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9123 | |
5c54719c | 9124 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9125 | } |
9126 | ||
9127 | /* Some versions of rustc emitted enums in an unusual way. | |
9128 | ||
9129 | Ordinary enums were emitted as unions. The first element of each | |
9130 | structure in the union was named "RUST$ENUM$DISR". This element | |
9131 | held the discriminant. | |
9132 | ||
9133 | These versions of Rust also implemented the "non-zero" | |
9134 | optimization. When the enum had two values, and one is empty and | |
9135 | the other holds a pointer that cannot be zero, the pointer is used | |
9136 | as the discriminant, with a zero value meaning the empty variant. | |
9137 | Here, the union's first member is of the form | |
9138 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9139 | where the fieldnos are the indices of the fields that should be | |
9140 | traversed in order to find the field (which may be several fields deep) | |
9141 | and the variantname is the name of the variant of the case when the | |
9142 | field is zero. | |
9143 | ||
9144 | This function recognizes whether TYPE is of one of these forms, | |
9145 | and, if so, smashes it to be a variant type. */ | |
9146 | ||
9147 | static void | |
9148 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9149 | { | |
78134374 | 9150 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9151 | |
9152 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9153 | if (type->num_fields () == 0) |
c9317f21 TT |
9154 | return; |
9155 | ||
9156 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9157 | if (type->num_fields () == 1 |
c9317f21 TT |
9158 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9159 | { | |
9160 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9161 | ||
9162 | /* Decode the field name to find the offset of the | |
9163 | discriminant. */ | |
9164 | ULONGEST bit_offset = 0; | |
940da03e | 9165 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9166 | while (name[0] >= '0' && name[0] <= '9') |
9167 | { | |
9168 | char *tail; | |
9169 | unsigned long index = strtoul (name, &tail, 10); | |
9170 | name = tail; | |
9171 | if (*name != '$' | |
1f704f76 | 9172 | || index >= field_type->num_fields () |
c9317f21 TT |
9173 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9174 | != FIELD_LOC_KIND_BITPOS)) | |
9175 | { | |
b98664d3 | 9176 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9177 | "[in module %s]"), |
9178 | TYPE_FIELD_NAME (type, 0), | |
9179 | objfile_name (objfile)); | |
9180 | return; | |
9181 | } | |
9182 | ++name; | |
9183 | ||
9184 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9185 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9186 | } |
9187 | ||
9c6a1327 TT |
9188 | /* Smash this type to be a structure type. We have to do this |
9189 | because the type has already been recorded. */ | |
67607e24 | 9190 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9191 | type->set_num_fields (3); |
9c6a1327 | 9192 | /* Save the field we care about. */ |
ceacbf6e | 9193 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9194 | type->set_fields |
9195 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9196 | |
9c6a1327 | 9197 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9198 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9199 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9200 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9201 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9202 | |
9203 | /* The order of fields doesn't really matter, so put the real | |
9204 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9205 | type->field (1) = saved_field; |
9c6a1327 | 9206 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9207 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9208 | type->field (1).type ()->set_name | |
7d93a1e0 | 9209 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9210 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9211 | |
9212 | const char *dataless_name | |
7d93a1e0 | 9213 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9214 | name); |
9215 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9216 | dataless_name); | |
5d14b6e5 | 9217 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9218 | /* NAME points into the original discriminant name, which |
9219 | already has the correct lifetime. */ | |
9c6a1327 | 9220 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9221 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9222 | |
9c6a1327 TT |
9223 | /* Indicate that this is a variant type. */ |
9224 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9225 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9226 | } |
77c2dba3 TT |
9227 | /* A union with a single anonymous field is probably an old-style |
9228 | univariant enum. */ | |
1f704f76 | 9229 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9230 | { |
c9317f21 TT |
9231 | /* Smash this type to be a structure type. We have to do this |
9232 | because the type has already been recorded. */ | |
67607e24 | 9233 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9234 | |
940da03e | 9235 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9236 | const char *variant_name |
7d93a1e0 | 9237 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9238 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9239 | field_type->set_name |
9240 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9241 | type->name (), variant_name)); |
57d02173 TT |
9242 | |
9243 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9244 | } |
9245 | else | |
9246 | { | |
9247 | struct type *disr_type = nullptr; | |
1f704f76 | 9248 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9249 | { |
940da03e | 9250 | disr_type = type->field (i).type (); |
c9317f21 | 9251 | |
78134374 | 9252 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9253 | { |
9254 | /* All fields of a true enum will be structs. */ | |
9255 | return; | |
9256 | } | |
1f704f76 | 9257 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9258 | { |
9259 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9260 | disr_type = nullptr; |
c9317f21 TT |
9261 | } |
9262 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9263 | "RUST$ENUM$DISR") != 0) | |
9264 | { | |
9265 | /* Not a Rust enum. */ | |
9266 | return; | |
9267 | } | |
9268 | else | |
9269 | { | |
9270 | /* Found one. */ | |
9271 | break; | |
9272 | } | |
9273 | } | |
9274 | ||
9275 | /* If we got here without a discriminant, then it's probably | |
9276 | just a union. */ | |
9277 | if (disr_type == nullptr) | |
9278 | return; | |
9279 | ||
9280 | /* Smash this type to be a structure type. We have to do this | |
9281 | because the type has already been recorded. */ | |
67607e24 | 9282 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9283 | |
9c6a1327 | 9284 | /* Make space for the discriminant field. */ |
ceacbf6e | 9285 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9286 | field *new_fields |
1f704f76 | 9287 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9288 | * sizeof (struct field))); |
80fc5e77 | 9289 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9290 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9291 | type->set_fields (new_fields); |
1f704f76 | 9292 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9293 | |
9294 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9295 | type->field (0) = *disr_field; |
9c6a1327 TT |
9296 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9297 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9298 | |
9299 | /* We need a way to find the correct discriminant given a | |
9300 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9301 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9302 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9303 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9304 | { |
9305 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9306 | { | |
9307 | const char *name | |
9308 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9309 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9310 | } | |
9311 | } | |
9312 | ||
1f704f76 | 9313 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9314 | /* We don't need a range entry for the discriminant, but we do |
9315 | need one for every other field, as there is no default | |
9316 | variant. */ | |
9317 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9318 | discriminant_range, | |
9319 | n_fields - 1); | |
c9317f21 TT |
9320 | /* Skip the discriminant here. */ |
9321 | for (int i = 1; i < n_fields; ++i) | |
9322 | { | |
9323 | /* Find the final word in the name of this variant's type. | |
9324 | That name can be used to look up the correct | |
9325 | discriminant. */ | |
9326 | const char *variant_name | |
940da03e | 9327 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9328 | |
9329 | auto iter = discriminant_map.find (variant_name); | |
9330 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9331 | { |
57d02173 TT |
9332 | ranges[i - 1].low = iter->second; |
9333 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9334 | } |
c9317f21 | 9335 | |
57d02173 TT |
9336 | /* In Rust, each element should have the size of the |
9337 | enclosing enum. */ | |
9338 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9339 | ||
bedda9ac | 9340 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9341 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9342 | if (sub_type->num_fields () > 0) |
bedda9ac | 9343 | { |
5e33d5f4 | 9344 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9345 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9346 | } |
9c6a1327 | 9347 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9348 | sub_type->set_name |
9349 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9350 | type->name (), variant_name)); |
c9317f21 | 9351 | } |
9c6a1327 TT |
9352 | |
9353 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9354 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9355 | gdb::array_view<discriminant_range> (ranges, |
9356 | n_fields - 1)); | |
c9317f21 TT |
9357 | } |
9358 | } | |
9359 | ||
9360 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9361 | ||
9362 | static void | |
9363 | rust_union_quirks (struct dwarf2_cu *cu) | |
9364 | { | |
9365 | gdb_assert (cu->language == language_rust); | |
52941706 | 9366 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9367 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9368 | /* We don't need this any more. */ |
9369 | cu->rust_unions.clear (); | |
c9317f21 TT |
9370 | } |
9371 | ||
8adb8487 TT |
9372 | /* See read.h. */ |
9373 | ||
9374 | type_unit_group_unshareable * | |
9375 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9376 | { | |
9377 | auto iter = this->m_type_units.find (tu_group); | |
9378 | if (iter != this->m_type_units.end ()) | |
9379 | return iter->second.get (); | |
9380 | ||
9381 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9382 | type_unit_group_unshareable *result = uniq.get (); | |
9383 | this->m_type_units[tu_group] = std::move (uniq); | |
9384 | return result; | |
9385 | } | |
9386 | ||
e286671b TT |
9387 | struct type * |
9388 | dwarf2_per_objfile::get_type_for_signatured_type | |
9389 | (signatured_type *sig_type) const | |
9390 | { | |
9391 | auto iter = this->m_type_map.find (sig_type); | |
9392 | if (iter == this->m_type_map.end ()) | |
9393 | return nullptr; | |
9394 | ||
9395 | return iter->second; | |
9396 | } | |
9397 | ||
9398 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9399 | (signatured_type *sig_type, struct type *type) | |
9400 | { | |
9401 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9402 | ||
9403 | this->m_type_map[sig_type] = type; | |
9404 | } | |
9405 | ||
95554aad TT |
9406 | /* A helper function for computing the list of all symbol tables |
9407 | included by PER_CU. */ | |
9408 | ||
9409 | static void | |
4c39bc03 | 9410 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9411 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9412 | dwarf2_per_cu_data *per_cu, |
9413 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9414 | struct compunit_symtab *immediate_parent) |
95554aad | 9415 | { |
af758d11 | 9416 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9417 | if (*slot != NULL) |
9418 | { | |
9419 | /* This inclusion and its children have been processed. */ | |
9420 | return; | |
9421 | } | |
9422 | ||
9423 | *slot = per_cu; | |
af758d11 | 9424 | |
95554aad | 9425 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9426 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9427 | if (cust != NULL) |
ec94af83 DE |
9428 | { |
9429 | /* If this is a type unit only add its symbol table if we haven't | |
9430 | seen it yet (type unit per_cu's can share symtabs). */ | |
9431 | if (per_cu->is_debug_types) | |
9432 | { | |
43f3e411 | 9433 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9434 | if (*slot == NULL) |
9435 | { | |
43f3e411 | 9436 | *slot = cust; |
4c39bc03 | 9437 | result->push_back (cust); |
43f3e411 DE |
9438 | if (cust->user == NULL) |
9439 | cust->user = immediate_parent; | |
ec94af83 DE |
9440 | } |
9441 | } | |
9442 | else | |
f9125b6c | 9443 | { |
4c39bc03 | 9444 | result->push_back (cust); |
43f3e411 DE |
9445 | if (cust->user == NULL) |
9446 | cust->user = immediate_parent; | |
f9125b6c | 9447 | } |
ec94af83 | 9448 | } |
95554aad | 9449 | |
ae640021 AB |
9450 | if (!per_cu->imported_symtabs_empty ()) |
9451 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9452 | { | |
9453 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9454 | all_type_symtabs, ptr, per_objfile, |
9455 | cust); | |
ae640021 | 9456 | } |
95554aad TT |
9457 | } |
9458 | ||
43f3e411 | 9459 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9460 | PER_CU. */ |
9461 | ||
9462 | static void | |
43182c09 SM |
9463 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9464 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9465 | { |
f4dc4d17 DE |
9466 | gdb_assert (! per_cu->is_debug_types); |
9467 | ||
ae640021 | 9468 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9469 | { |
ae640021 | 9470 | int len; |
4c39bc03 | 9471 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9472 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9473 | |
9474 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9475 | if (cust == NULL) |
95554aad TT |
9476 | return; |
9477 | ||
280a9412 TT |
9478 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9479 | htab_eq_pointer, | |
9480 | NULL, xcalloc, xfree)); | |
9481 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9482 | htab_eq_pointer, | |
9483 | NULL, xcalloc, xfree)); | |
95554aad | 9484 | |
ae640021 | 9485 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9486 | { |
280a9412 TT |
9487 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9488 | all_type_symtabs.get (), ptr, | |
9489 | per_objfile, cust); | |
ec94af83 | 9490 | } |
95554aad | 9491 | |
ec94af83 | 9492 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9493 | len = result_symtabs.size (); |
43f3e411 | 9494 | cust->includes |
f6e649dd | 9495 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9496 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9497 | memcpy (cust->includes, result_symtabs.data (), |
9498 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9499 | cust->includes[len] = NULL; |
95554aad TT |
9500 | } |
9501 | } | |
9502 | ||
9503 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9504 | read. */ | |
9505 | ||
9506 | static void | |
976ca316 | 9507 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9508 | { |
976ca316 | 9509 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9510 | { |
9511 | if (! iter->is_debug_types) | |
976ca316 | 9512 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9513 | } |
95554aad | 9514 | |
976ca316 | 9515 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9516 | } |
9517 | ||
8fc0b21d | 9518 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9519 | already been loaded into memory. */ |
9520 | ||
9521 | static void | |
8fc0b21d | 9522 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9523 | { |
976ca316 SM |
9524 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9525 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9526 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9527 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9528 | struct compunit_symtab *cust; |
10b3939b | 9529 | CORE_ADDR baseaddr; |
4359dff1 | 9530 | struct block *static_block; |
3e29f34a | 9531 | CORE_ADDR addr; |
10b3939b | 9532 | |
b3b3bada | 9533 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9534 | |
c89b44cd TT |
9535 | /* Clear the list here in case something was left over. */ |
9536 | cu->method_list.clear (); | |
10b3939b | 9537 | |
95554aad TT |
9538 | cu->language = pretend_language; |
9539 | cu->language_defn = language_def (cu->language); | |
9540 | ||
1c47ec3e TV |
9541 | dwarf2_find_base_address (cu->dies, cu); |
9542 | ||
702cf3f5 AB |
9543 | /* Before we start reading the top-level DIE, ensure it has a valid tag |
9544 | type. */ | |
9545 | switch (cu->dies->tag) | |
9546 | { | |
9547 | case DW_TAG_compile_unit: | |
9548 | case DW_TAG_partial_unit: | |
9549 | case DW_TAG_type_unit: | |
9550 | break; | |
9551 | default: | |
9552 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), | |
9553 | dwarf_tag_name (cu->dies->tag), | |
9554 | sect_offset_str (cu->per_cu->sect_off), | |
9555 | objfile_name (per_objfile->objfile)); | |
9556 | } | |
9557 | ||
c906108c | 9558 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9559 | process_die (cu->dies, cu); |
c906108c | 9560 | |
a766d390 DE |
9561 | /* For now fudge the Go package. */ |
9562 | if (cu->language == language_go) | |
9563 | fixup_go_packaging (cu); | |
9564 | ||
5f48f8f3 | 9565 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9566 | should be complete, and it should now be safe to compute all of the |
9567 | physnames. */ | |
9568 | compute_delayed_physnames (cu); | |
3da10d80 | 9569 | |
c9317f21 TT |
9570 | if (cu->language == language_rust) |
9571 | rust_union_quirks (cu); | |
9572 | ||
fae299cd DC |
9573 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9574 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9575 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9576 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9577 | |
3e29f34a | 9578 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9579 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9580 | |
9581 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9582 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9583 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9584 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9585 | this comp unit. */ | |
9586 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9587 | ||
c24bdb02 | 9588 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9589 | SECT_OFF_TEXT (objfile), |
9590 | 0); | |
c906108c | 9591 | |
43f3e411 | 9592 | if (cust != NULL) |
c906108c | 9593 | { |
df15bd07 | 9594 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9595 | |
8be455d7 JK |
9596 | /* Set symtab language to language from DW_AT_language. If the |
9597 | compilation is from a C file generated by language preprocessors, do | |
9598 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9599 | if (!(cu->language == language_c |
40e3ad0e | 9600 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9601 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9602 | |
9603 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9604 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9605 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9606 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9607 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9608 | |
9609 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9610 | needed, it would be wrong due to missing DW_AT_producer there. | |
9611 | ||
9612 | Still one can confuse GDB by using non-standard GCC compilation | |
9613 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9614 | */ |
ab260dad | 9615 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9616 | cust->locations_valid = 1; |
e0d00bc7 JK |
9617 | |
9618 | if (gcc_4_minor >= 5) | |
43f3e411 | 9619 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9620 | |
43f3e411 | 9621 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9622 | } |
9291a0cd | 9623 | |
976ca316 | 9624 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9625 | |
95554aad | 9626 | /* Push it for inclusion processing later. */ |
976ca316 | 9627 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9628 | |
9629 | /* Not needed any more. */ | |
c24bdb02 | 9630 | cu->reset_builder (); |
f4dc4d17 | 9631 | } |
45cfd468 | 9632 | |
8fc0b21d | 9633 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9634 | already been loaded into memory. */ |
9635 | ||
9636 | static void | |
8fc0b21d | 9637 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9638 | enum language pretend_language) |
9639 | { | |
976ca316 SM |
9640 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9641 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 9642 | struct compunit_symtab *cust; |
0186c6a7 DE |
9643 | struct signatured_type *sig_type; |
9644 | ||
8fc0b21d SM |
9645 | gdb_assert (cu->per_cu->is_debug_types); |
9646 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9647 | |
c89b44cd TT |
9648 | /* Clear the list here in case something was left over. */ |
9649 | cu->method_list.clear (); | |
f4dc4d17 | 9650 | |
f4dc4d17 DE |
9651 | cu->language = pretend_language; |
9652 | cu->language_defn = language_def (cu->language); | |
9653 | ||
9654 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9655 | process_die (cu->dies, cu); | |
9656 | ||
9657 | /* For now fudge the Go package. */ | |
9658 | if (cu->language == language_go) | |
9659 | fixup_go_packaging (cu); | |
9660 | ||
5f48f8f3 | 9661 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9662 | should be complete, and it should now be safe to compute all of the |
9663 | physnames. */ | |
9664 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9665 | |
c9317f21 TT |
9666 | if (cu->language == language_rust) |
9667 | rust_union_quirks (cu); | |
9668 | ||
f4dc4d17 DE |
9669 | /* TUs share symbol tables. |
9670 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9671 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9672 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 9673 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 9674 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 9675 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 9676 | { |
c24bdb02 KS |
9677 | buildsym_compunit *builder = cu->get_builder (); |
9678 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9679 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9680 | |
43f3e411 | 9681 | if (cust != NULL) |
f4dc4d17 DE |
9682 | { |
9683 | /* Set symtab language to language from DW_AT_language. If the | |
9684 | compilation is from a C file generated by language preprocessors, | |
9685 | do not set the language if it was already deduced by | |
9686 | start_subfile. */ | |
43f3e411 DE |
9687 | if (!(cu->language == language_c |
9688 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9689 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9690 | } |
9691 | } | |
9692 | else | |
9693 | { | |
c24bdb02 | 9694 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9695 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9696 | } |
9697 | ||
976ca316 | 9698 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
9699 | |
9700 | /* Not needed any more. */ | |
c24bdb02 | 9701 | cu->reset_builder (); |
c906108c SS |
9702 | } |
9703 | ||
95554aad TT |
9704 | /* Process an imported unit DIE. */ |
9705 | ||
9706 | static void | |
9707 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9708 | { | |
9709 | struct attribute *attr; | |
9710 | ||
f4dc4d17 DE |
9711 | /* For now we don't handle imported units in type units. */ |
9712 | if (cu->per_cu->is_debug_types) | |
9713 | { | |
9714 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9715 | " supported in type units [in module %s]"), | |
5e22e966 | 9716 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9717 | } |
9718 | ||
95554aad TT |
9719 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9720 | if (attr != NULL) | |
9721 | { | |
0826b30a | 9722 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 9723 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 9724 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 9725 | dwarf2_per_cu_data *per_cu |
ab432490 | 9726 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 9727 | |
58990295 TV |
9728 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9729 | into another compilation unit, at root level. Regard this as a hint, | |
9730 | and ignore it. */ | |
9731 | if (die->parent && die->parent->parent == NULL | |
9732 | && per_cu->unit_type == DW_UT_compile | |
9733 | && per_cu->lang == language_cplus) | |
9734 | return; | |
9735 | ||
69d751e3 | 9736 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 9737 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
9738 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
9739 | false, cu->language); | |
95554aad | 9740 | |
ae640021 | 9741 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9742 | } |
9743 | } | |
9744 | ||
4c8aa72d PA |
9745 | /* RAII object that represents a process_die scope: i.e., |
9746 | starts/finishes processing a DIE. */ | |
9747 | class process_die_scope | |
adde2bff | 9748 | { |
4c8aa72d PA |
9749 | public: |
9750 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9751 | : m_die (die), m_cu (cu) | |
9752 | { | |
9753 | /* We should only be processing DIEs not already in process. */ | |
9754 | gdb_assert (!m_die->in_process); | |
9755 | m_die->in_process = true; | |
9756 | } | |
8c3cb9fa | 9757 | |
4c8aa72d PA |
9758 | ~process_die_scope () |
9759 | { | |
9760 | m_die->in_process = false; | |
9761 | ||
9762 | /* If we're done processing the DIE for the CU that owns the line | |
9763 | header, we don't need the line header anymore. */ | |
9764 | if (m_cu->line_header_die_owner == m_die) | |
9765 | { | |
9766 | delete m_cu->line_header; | |
9767 | m_cu->line_header = NULL; | |
9768 | m_cu->line_header_die_owner = NULL; | |
9769 | } | |
9770 | } | |
9771 | ||
9772 | private: | |
9773 | die_info *m_die; | |
9774 | dwarf2_cu *m_cu; | |
9775 | }; | |
adde2bff | 9776 | |
c906108c SS |
9777 | /* Process a die and its children. */ |
9778 | ||
9779 | static void | |
e7c27a73 | 9780 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9781 | { |
4c8aa72d | 9782 | process_die_scope scope (die, cu); |
adde2bff | 9783 | |
c906108c SS |
9784 | switch (die->tag) |
9785 | { | |
9786 | case DW_TAG_padding: | |
9787 | break; | |
9788 | case DW_TAG_compile_unit: | |
95554aad | 9789 | case DW_TAG_partial_unit: |
e7c27a73 | 9790 | read_file_scope (die, cu); |
c906108c | 9791 | break; |
348e048f DE |
9792 | case DW_TAG_type_unit: |
9793 | read_type_unit_scope (die, cu); | |
9794 | break; | |
c906108c | 9795 | case DW_TAG_subprogram: |
0a4b0913 AB |
9796 | /* Nested subprograms in Fortran get a prefix. */ |
9797 | if (cu->language == language_fortran | |
9798 | && die->parent != NULL | |
9799 | && die->parent->tag == DW_TAG_subprogram) | |
9800 | cu->processing_has_namespace_info = true; | |
9801 | /* Fall through. */ | |
c906108c | 9802 | case DW_TAG_inlined_subroutine: |
edb3359d | 9803 | read_func_scope (die, cu); |
c906108c SS |
9804 | break; |
9805 | case DW_TAG_lexical_block: | |
14898363 L |
9806 | case DW_TAG_try_block: |
9807 | case DW_TAG_catch_block: | |
e7c27a73 | 9808 | read_lexical_block_scope (die, cu); |
c906108c | 9809 | break; |
216f72a1 | 9810 | case DW_TAG_call_site: |
96408a79 SA |
9811 | case DW_TAG_GNU_call_site: |
9812 | read_call_site_scope (die, cu); | |
9813 | break; | |
c906108c | 9814 | case DW_TAG_class_type: |
680b30c7 | 9815 | case DW_TAG_interface_type: |
c906108c SS |
9816 | case DW_TAG_structure_type: |
9817 | case DW_TAG_union_type: | |
134d01f1 | 9818 | process_structure_scope (die, cu); |
c906108c SS |
9819 | break; |
9820 | case DW_TAG_enumeration_type: | |
134d01f1 | 9821 | process_enumeration_scope (die, cu); |
c906108c | 9822 | break; |
134d01f1 | 9823 | |
f792889a DJ |
9824 | /* These dies have a type, but processing them does not create |
9825 | a symbol or recurse to process the children. Therefore we can | |
9826 | read them on-demand through read_type_die. */ | |
c906108c | 9827 | case DW_TAG_subroutine_type: |
72019c9c | 9828 | case DW_TAG_set_type: |
c906108c | 9829 | case DW_TAG_pointer_type: |
c906108c | 9830 | case DW_TAG_ptr_to_member_type: |
c906108c | 9831 | case DW_TAG_reference_type: |
4297a3f0 | 9832 | case DW_TAG_rvalue_reference_type: |
c906108c | 9833 | case DW_TAG_string_type: |
c906108c | 9834 | break; |
134d01f1 | 9835 | |
d8f62e84 TT |
9836 | case DW_TAG_array_type: |
9837 | /* We only need to handle this case for Ada -- in other | |
9838 | languages, it's normal for the compiler to emit a typedef | |
9839 | instead. */ | |
9840 | if (cu->language != language_ada) | |
9841 | break; | |
9842 | /* FALLTHROUGH */ | |
c906108c | 9843 | case DW_TAG_base_type: |
a02abb62 | 9844 | case DW_TAG_subrange_type: |
cb249c71 | 9845 | case DW_TAG_typedef: |
134d01f1 | 9846 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 9847 | DW_AT_name. */ |
f792889a | 9848 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9849 | break; |
c906108c | 9850 | case DW_TAG_common_block: |
e7c27a73 | 9851 | read_common_block (die, cu); |
c906108c SS |
9852 | break; |
9853 | case DW_TAG_common_inclusion: | |
9854 | break; | |
d9fa45fe | 9855 | case DW_TAG_namespace: |
9068261f | 9856 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9857 | read_namespace (die, cu); |
d9fa45fe | 9858 | break; |
5d7cb8df | 9859 | case DW_TAG_module: |
9068261f | 9860 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9861 | read_module (die, cu); |
9862 | break; | |
d9fa45fe | 9863 | case DW_TAG_imported_declaration: |
9068261f | 9864 | cu->processing_has_namespace_info = true; |
74921315 KS |
9865 | if (read_namespace_alias (die, cu)) |
9866 | break; | |
86a73007 TT |
9867 | /* The declaration is not a global namespace alias. */ |
9868 | /* Fall through. */ | |
d9fa45fe | 9869 | case DW_TAG_imported_module: |
9068261f | 9870 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9871 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9872 | || cu->language != language_fortran)) | |
b98664d3 | 9873 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9874 | dwarf_tag_name (die->tag)); |
9875 | read_import_statement (die, cu); | |
d9fa45fe | 9876 | break; |
95554aad TT |
9877 | |
9878 | case DW_TAG_imported_unit: | |
9879 | process_imported_unit_die (die, cu); | |
9880 | break; | |
9881 | ||
71a3c369 TT |
9882 | case DW_TAG_variable: |
9883 | read_variable (die, cu); | |
9884 | break; | |
9885 | ||
c906108c | 9886 | default: |
e7c27a73 | 9887 | new_symbol (die, NULL, cu); |
c906108c SS |
9888 | break; |
9889 | } | |
9890 | } | |
ca69b9e6 DE |
9891 | \f |
9892 | /* DWARF name computation. */ | |
c906108c | 9893 | |
94af9270 KS |
9894 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9895 | needs to have the name of the scope prepended to the name listed in the | |
9896 | die. */ | |
9897 | ||
9898 | static int | |
9899 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9900 | { | |
1c809c68 TT |
9901 | struct attribute *attr; |
9902 | ||
94af9270 KS |
9903 | switch (die->tag) |
9904 | { | |
9905 | case DW_TAG_namespace: | |
9906 | case DW_TAG_typedef: | |
9907 | case DW_TAG_class_type: | |
9908 | case DW_TAG_interface_type: | |
9909 | case DW_TAG_structure_type: | |
9910 | case DW_TAG_union_type: | |
9911 | case DW_TAG_enumeration_type: | |
9912 | case DW_TAG_enumerator: | |
9913 | case DW_TAG_subprogram: | |
08a76f8a | 9914 | case DW_TAG_inlined_subroutine: |
94af9270 | 9915 | case DW_TAG_member: |
74921315 | 9916 | case DW_TAG_imported_declaration: |
94af9270 KS |
9917 | return 1; |
9918 | ||
9919 | case DW_TAG_variable: | |
c2b0a229 | 9920 | case DW_TAG_constant: |
94af9270 KS |
9921 | /* We only need to prefix "globally" visible variables. These include |
9922 | any variable marked with DW_AT_external or any variable that | |
9923 | lives in a namespace. [Variables in anonymous namespaces | |
9924 | require prefixing, but they are not DW_AT_external.] */ | |
9925 | ||
9926 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9927 | { | |
9928 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9929 | |
94af9270 KS |
9930 | return die_needs_namespace (die_specification (die, &spec_cu), |
9931 | spec_cu); | |
9932 | } | |
9933 | ||
1c809c68 | 9934 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9935 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9936 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9937 | return 0; |
9938 | /* A variable in a lexical block of some kind does not need a | |
9939 | namespace, even though in C++ such variables may be external | |
9940 | and have a mangled name. */ | |
9941 | if (die->parent->tag == DW_TAG_lexical_block | |
9942 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9943 | || die->parent->tag == DW_TAG_catch_block |
9944 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9945 | return 0; |
9946 | return 1; | |
94af9270 KS |
9947 | |
9948 | default: | |
9949 | return 0; | |
9950 | } | |
9951 | } | |
9952 | ||
73b9be8b KS |
9953 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9954 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9955 | defined for the given DIE. */ | |
9956 | ||
9957 | static struct attribute * | |
9958 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9959 | { | |
9960 | struct attribute *attr; | |
9961 | ||
9962 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9963 | if (attr == NULL) | |
9964 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9965 | ||
9966 | return attr; | |
9967 | } | |
9968 | ||
9969 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9970 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9971 | defined for the given DIE. */ | |
9972 | ||
9973 | static const char * | |
9974 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9975 | { | |
9976 | const char *linkage_name; | |
9977 | ||
9978 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9979 | if (linkage_name == NULL) | |
9980 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9981 | ||
787de330 TT |
9982 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
9983 | See https://github.com/rust-lang/rust/issues/32925. */ | |
9984 | if (cu->language == language_rust && linkage_name != NULL | |
9985 | && strchr (linkage_name, '{') != NULL) | |
9986 | linkage_name = NULL; | |
9987 | ||
73b9be8b KS |
9988 | return linkage_name; |
9989 | } | |
9990 | ||
94af9270 | 9991 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 9992 | compute the physname for the object, which include a method's: |
9c37b5ae | 9993 | - formal parameters (C++), |
a766d390 | 9994 | - receiver type (Go), |
a766d390 DE |
9995 | |
9996 | The term "physname" is a bit confusing. | |
9997 | For C++, for example, it is the demangled name. | |
9998 | For Go, for example, it's the mangled name. | |
94af9270 | 9999 | |
af6b7be1 JB |
10000 | For Ada, return the DIE's linkage name rather than the fully qualified |
10001 | name. PHYSNAME is ignored.. | |
10002 | ||
5989a64e | 10003 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10004 | canonicalized. */ |
94af9270 KS |
10005 | |
10006 | static const char * | |
15d034d0 TT |
10007 | dwarf2_compute_name (const char *name, |
10008 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10009 | int physname) |
10010 | { | |
5e22e966 | 10011 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10012 | |
94af9270 KS |
10013 | if (name == NULL) |
10014 | name = dwarf2_name (die, cu); | |
10015 | ||
2ee7123e DE |
10016 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10017 | but otherwise compute it by typename_concat inside GDB. | |
10018 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10019 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10020 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10021 | will set the demangled name to the result of dwarf2_full_name, and it is |
10022 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10023 | if (cu->language == language_ada |
10024 | || (cu->language == language_fortran && physname)) | |
10025 | { | |
10026 | /* For Ada unit, we prefer the linkage name over the name, as | |
10027 | the former contains the exported name, which the user expects | |
10028 | to be able to reference. Ideally, we want the user to be able | |
10029 | to reference this entity using either natural or linkage name, | |
10030 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10031 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10032 | |
2ee7123e DE |
10033 | if (linkage_name != NULL) |
10034 | return linkage_name; | |
f55ee35c JK |
10035 | } |
10036 | ||
94af9270 KS |
10037 | /* These are the only languages we know how to qualify names in. */ |
10038 | if (name != NULL | |
9c37b5ae | 10039 | && (cu->language == language_cplus |
c44af4eb TT |
10040 | || cu->language == language_fortran || cu->language == language_d |
10041 | || cu->language == language_rust)) | |
94af9270 KS |
10042 | { |
10043 | if (die_needs_namespace (die, cu)) | |
10044 | { | |
0d5cff50 | 10045 | const char *prefix; |
34a68019 | 10046 | const char *canonical_name = NULL; |
94af9270 | 10047 | |
d7e74731 PA |
10048 | string_file buf; |
10049 | ||
94af9270 | 10050 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10051 | if (*prefix != '\0') |
10052 | { | |
43816ebc TT |
10053 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10054 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10055 | |
43816ebc | 10056 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10057 | } |
10058 | else | |
d7e74731 | 10059 | buf.puts (name); |
94af9270 | 10060 | |
98bfdba5 PA |
10061 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10062 | as children with DW_TAG_template_type_param or | |
10063 | DW_TAG_value_type_param. If the latter, add them to the name | |
10064 | here. If the name already has template parameters, then | |
10065 | skip this step; some versions of GCC emit both, and | |
10066 | it is more efficient to use the pre-computed name. | |
10067 | ||
10068 | Something to keep in mind about this process: it is very | |
10069 | unlikely, or in some cases downright impossible, to produce | |
10070 | something that will match the mangled name of a function. | |
10071 | If the definition of the function has the same debug info, | |
10072 | we should be able to match up with it anyway. But fallbacks | |
10073 | using the minimal symbol, for instance to find a method | |
10074 | implemented in a stripped copy of libstdc++, will not work. | |
10075 | If we do not have debug info for the definition, we will have to | |
10076 | match them up some other way. | |
10077 | ||
10078 | When we do name matching there is a related problem with function | |
10079 | templates; two instantiated function templates are allowed to | |
10080 | differ only by their return types, which we do not add here. */ | |
10081 | ||
10082 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10083 | { | |
10084 | struct attribute *attr; | |
10085 | struct die_info *child; | |
10086 | int first = 1; | |
2c75ccb2 | 10087 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10088 | |
10089 | die->building_fullname = 1; | |
10090 | ||
10091 | for (child = die->child; child != NULL; child = child->sibling) | |
10092 | { | |
10093 | struct type *type; | |
12df843f | 10094 | LONGEST value; |
d521ce57 | 10095 | const gdb_byte *bytes; |
98bfdba5 PA |
10096 | struct dwarf2_locexpr_baton *baton; |
10097 | struct value *v; | |
10098 | ||
10099 | if (child->tag != DW_TAG_template_type_param | |
10100 | && child->tag != DW_TAG_template_value_param) | |
10101 | continue; | |
10102 | ||
10103 | if (first) | |
10104 | { | |
d7e74731 | 10105 | buf.puts ("<"); |
98bfdba5 PA |
10106 | first = 0; |
10107 | } | |
10108 | else | |
d7e74731 | 10109 | buf.puts (", "); |
98bfdba5 PA |
10110 | |
10111 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10112 | if (attr == NULL) | |
10113 | { | |
b98664d3 | 10114 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10115 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10116 | continue; |
10117 | } | |
10118 | type = die_type (child, cu); | |
10119 | ||
10120 | if (child->tag == DW_TAG_template_type_param) | |
10121 | { | |
2c75ccb2 AB |
10122 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10123 | &type_print_raw_options); | |
98bfdba5 PA |
10124 | continue; |
10125 | } | |
10126 | ||
10127 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10128 | if (attr == NULL) | |
10129 | { | |
b98664d3 | 10130 | complaint (_("template parameter missing " |
3e43a32a | 10131 | "DW_AT_const_value")); |
d7e74731 | 10132 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10133 | continue; |
10134 | } | |
10135 | ||
10136 | dwarf2_const_value_attr (attr, type, name, | |
10137 | &cu->comp_unit_obstack, cu, | |
10138 | &value, &bytes, &baton); | |
10139 | ||
20ce4123 | 10140 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10141 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10142 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10143 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10144 | else |
10145 | { | |
10146 | struct value_print_options opts; | |
10147 | ||
10148 | if (baton != NULL) | |
10149 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10150 | baton->data, | |
10151 | baton->size, | |
9f47c707 SM |
10152 | baton->per_cu, |
10153 | baton->per_objfile); | |
98bfdba5 PA |
10154 | else if (bytes != NULL) |
10155 | { | |
10156 | v = allocate_value (type); | |
10157 | memcpy (value_contents_writeable (v), bytes, | |
10158 | TYPE_LENGTH (type)); | |
10159 | } | |
10160 | else | |
10161 | v = value_from_longest (type, value); | |
10162 | ||
3e43a32a MS |
10163 | /* Specify decimal so that we do not depend on |
10164 | the radix. */ | |
98bfdba5 PA |
10165 | get_formatted_print_options (&opts, 'd'); |
10166 | opts.raw = 1; | |
d7e74731 | 10167 | value_print (v, &buf, &opts); |
98bfdba5 | 10168 | release_value (v); |
98bfdba5 PA |
10169 | } |
10170 | } | |
10171 | ||
10172 | die->building_fullname = 0; | |
10173 | ||
10174 | if (!first) | |
10175 | { | |
10176 | /* Close the argument list, with a space if necessary | |
10177 | (nested templates). */ | |
d7e74731 PA |
10178 | if (!buf.empty () && buf.string ().back () == '>') |
10179 | buf.puts (" >"); | |
98bfdba5 | 10180 | else |
d7e74731 | 10181 | buf.puts (">"); |
98bfdba5 PA |
10182 | } |
10183 | } | |
10184 | ||
9c37b5ae | 10185 | /* For C++ methods, append formal parameter type |
94af9270 | 10186 | information, if PHYSNAME. */ |
6e70227d | 10187 | |
94af9270 | 10188 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10189 | && cu->language == language_cplus) |
94af9270 KS |
10190 | { |
10191 | struct type *type = read_type_die (die, cu); | |
10192 | ||
d7e74731 | 10193 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10194 | &type_print_raw_options); |
94af9270 | 10195 | |
9c37b5ae | 10196 | if (cu->language == language_cplus) |
94af9270 | 10197 | { |
60430eff DJ |
10198 | /* Assume that an artificial first parameter is |
10199 | "this", but do not crash if it is not. RealView | |
10200 | marks unnamed (and thus unused) parameters as | |
10201 | artificial; there is no way to differentiate | |
10202 | the two cases. */ | |
1f704f76 | 10203 | if (type->num_fields () > 0 |
94af9270 | 10204 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10205 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10206 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10207 | buf.puts (" const"); |
94af9270 KS |
10208 | } |
10209 | } | |
10210 | ||
d7e74731 | 10211 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10212 | |
10213 | if (cu->language == language_cplus) | |
34a68019 | 10214 | canonical_name |
322a8516 | 10215 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10216 | objfile); |
34a68019 TT |
10217 | |
10218 | /* If we only computed INTERMEDIATE_NAME, or if | |
10219 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10220 | intern it. */ |
322a8516 | 10221 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10222 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10223 | else |
10224 | name = canonical_name; | |
94af9270 KS |
10225 | } |
10226 | } | |
10227 | ||
10228 | return name; | |
10229 | } | |
10230 | ||
0114d602 DJ |
10231 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10232 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10233 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10234 | not have a name. NAME may either be from a previous call to |
10235 | dwarf2_name or NULL. | |
10236 | ||
9c37b5ae | 10237 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10238 | |
10239 | static const char * | |
15d034d0 | 10240 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10241 | { |
94af9270 KS |
10242 | return dwarf2_compute_name (name, die, cu, 0); |
10243 | } | |
0114d602 | 10244 | |
94af9270 KS |
10245 | /* Construct a physname for the given DIE in CU. NAME may either be |
10246 | from a previous call to dwarf2_name or NULL. The result will be | |
10247 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10248 | name. | |
0114d602 | 10249 | |
9c37b5ae | 10250 | The output string will be canonicalized (if C++). */ |
0114d602 | 10251 | |
94af9270 | 10252 | static const char * |
15d034d0 | 10253 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10254 | { |
5e22e966 | 10255 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10256 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10257 | int need_copy = 1; |
10258 | ||
10259 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10260 | on its own. */ | |
10261 | if (!die_needs_namespace (die, cu)) | |
10262 | return dwarf2_compute_name (name, die, cu, 1); | |
10263 | ||
906bb4c5 TT |
10264 | if (cu->language != language_rust) |
10265 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10266 | |
10267 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10268 | has computed. */ | |
791afaa2 | 10269 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10270 | if (mangled != NULL) |
900e11f9 | 10271 | { |
900e11f9 | 10272 | |
d3355e4d | 10273 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10274 | { |
10275 | /* Do nothing (do not demangle the symbol name). */ | |
10276 | } | |
a766d390 DE |
10277 | else |
10278 | { | |
0eb876f5 JB |
10279 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10280 | their return type. It is easier for GDB users to search | |
10281 | for such functions as `name(params)' than `long name(params)'. | |
10282 | In such case the minimal symbol names do not match the full | |
10283 | symbol names but for template functions there is never a need | |
10284 | to look up their definition from their declaration so | |
10285 | the only disadvantage remains the minimal symbol variant | |
10286 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10287 | demangled.reset (gdb_demangle (mangled, |
10288 | (DMGL_PARAMS | DMGL_ANSI | |
10289 | | DMGL_RET_DROP))); | |
a766d390 | 10290 | } |
900e11f9 | 10291 | if (demangled) |
791afaa2 | 10292 | canon = demangled.get (); |
900e11f9 JK |
10293 | else |
10294 | { | |
10295 | canon = mangled; | |
10296 | need_copy = 0; | |
10297 | } | |
10298 | } | |
10299 | ||
10300 | if (canon == NULL || check_physname) | |
10301 | { | |
10302 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10303 | ||
10304 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10305 | { | |
10306 | /* It may not mean a bug in GDB. The compiler could also | |
10307 | compute DW_AT_linkage_name incorrectly. But in such case | |
10308 | GDB would need to be bug-to-bug compatible. */ | |
10309 | ||
b98664d3 | 10310 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10311 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10312 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10313 | objfile_name (objfile)); |
900e11f9 JK |
10314 | |
10315 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10316 | is available here - over computed PHYSNAME. It is safer | |
10317 | against both buggy GDB and buggy compilers. */ | |
10318 | ||
10319 | retval = canon; | |
10320 | } | |
10321 | else | |
10322 | { | |
10323 | retval = physname; | |
10324 | need_copy = 0; | |
10325 | } | |
10326 | } | |
10327 | else | |
10328 | retval = canon; | |
10329 | ||
10330 | if (need_copy) | |
be1e3d3e | 10331 | retval = objfile->intern (retval); |
900e11f9 | 10332 | |
900e11f9 | 10333 | return retval; |
0114d602 DJ |
10334 | } |
10335 | ||
74921315 KS |
10336 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10337 | a new symbol for it. | |
10338 | ||
10339 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10340 | ||
10341 | static int | |
10342 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10343 | { | |
10344 | struct attribute *attr; | |
10345 | ||
10346 | /* If the die does not have a name, this is not a namespace | |
10347 | alias. */ | |
10348 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10349 | if (attr != NULL) | |
10350 | { | |
10351 | int num; | |
10352 | struct die_info *d = die; | |
10353 | struct dwarf2_cu *imported_cu = cu; | |
10354 | ||
10355 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10356 | keep inspecting DIEs until we hit the underlying import. */ | |
10357 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10358 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10359 | { | |
10360 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10361 | if (attr == NULL) | |
10362 | break; | |
10363 | ||
10364 | d = follow_die_ref (d, attr, &imported_cu); | |
10365 | if (d->tag != DW_TAG_imported_declaration) | |
10366 | break; | |
10367 | } | |
10368 | ||
10369 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10370 | { | |
b98664d3 | 10371 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10372 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10373 | return 0; |
10374 | } | |
10375 | ||
10376 | if (attr != NULL) | |
10377 | { | |
10378 | struct type *type; | |
0826b30a | 10379 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10380 | |
aa66c379 | 10381 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10382 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10383 | { |
10384 | /* This declaration is a global namespace alias. Add | |
10385 | a symbol for it whose type is the aliased namespace. */ | |
10386 | new_symbol (die, type, cu); | |
10387 | return 1; | |
10388 | } | |
10389 | } | |
10390 | } | |
10391 | ||
10392 | return 0; | |
10393 | } | |
10394 | ||
22cee43f | 10395 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10396 | current context for CU. |
22cee43f PMR |
10397 | |
10398 | For Ada, imported declarations can materialize renamings, which *may* be | |
10399 | global. However it is impossible (for now?) in DWARF to distinguish | |
10400 | "external" imported declarations and "static" ones. As all imported | |
10401 | declarations seem to be static in all other languages, make them all CU-wide | |
10402 | global only in Ada. */ | |
10403 | ||
10404 | static struct using_direct ** | |
804d2729 | 10405 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10406 | { |
c24bdb02 KS |
10407 | if (cu->language == language_ada |
10408 | && cu->get_builder ()->outermost_context_p ()) | |
10409 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10410 | else |
c24bdb02 | 10411 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10412 | } |
10413 | ||
27aa8d6a SW |
10414 | /* Read the import statement specified by the given die and record it. */ |
10415 | ||
10416 | static void | |
10417 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10418 | { | |
5e22e966 | 10419 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10420 | struct attribute *import_attr; |
32019081 | 10421 | struct die_info *imported_die, *child_die; |
de4affc9 | 10422 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10423 | const char *imported_name; |
794684b6 | 10424 | const char *imported_name_prefix; |
13387711 SW |
10425 | const char *canonical_name; |
10426 | const char *import_alias; | |
10427 | const char *imported_declaration = NULL; | |
794684b6 | 10428 | const char *import_prefix; |
eb1e02fd | 10429 | std::vector<const char *> excludes; |
13387711 | 10430 | |
27aa8d6a SW |
10431 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10432 | if (import_attr == NULL) | |
10433 | { | |
b98664d3 | 10434 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10435 | dwarf_tag_name (die->tag)); |
10436 | return; | |
10437 | } | |
10438 | ||
de4affc9 CC |
10439 | imported_cu = cu; |
10440 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10441 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10442 | if (imported_name == NULL) |
10443 | { | |
10444 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10445 | ||
dda83cd7 SM |
10446 | The import in the following code: |
10447 | namespace A | |
10448 | { | |
10449 | typedef int B; | |
10450 | } | |
10451 | ||
10452 | int main () | |
10453 | { | |
10454 | using A::B; | |
10455 | B b; | |
10456 | return b; | |
10457 | } | |
10458 | ||
10459 | ... | |
10460 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10461 | <52> DW_AT_decl_file : 1 | |
10462 | <53> DW_AT_decl_line : 6 | |
10463 | <54> DW_AT_import : <0x75> | |
10464 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10465 | <59> DW_AT_name : B | |
10466 | <5b> DW_AT_decl_file : 1 | |
10467 | <5c> DW_AT_decl_line : 2 | |
10468 | <5d> DW_AT_type : <0x6e> | |
10469 | ... | |
10470 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10471 | <76> DW_AT_byte_size : 4 | |
10472 | <77> DW_AT_encoding : 5 (signed) | |
10473 | ||
10474 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10475 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10476 | return; |
10477 | } | |
10478 | ||
82856980 SW |
10479 | /* Figure out the local name after import. */ |
10480 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10481 | |
794684b6 SW |
10482 | /* Figure out where the statement is being imported to. */ |
10483 | import_prefix = determine_prefix (die, cu); | |
10484 | ||
10485 | /* Figure out what the scope of the imported die is and prepend it | |
10486 | to the name of the imported die. */ | |
de4affc9 | 10487 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10488 | |
f55ee35c JK |
10489 | if (imported_die->tag != DW_TAG_namespace |
10490 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10491 | { |
13387711 SW |
10492 | imported_declaration = imported_name; |
10493 | canonical_name = imported_name_prefix; | |
794684b6 | 10494 | } |
13387711 | 10495 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10496 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10497 | imported_name_prefix, |
10498 | (cu->language == language_d ? "." : "::"), | |
10499 | imported_name, (char *) NULL); | |
13387711 SW |
10500 | else |
10501 | canonical_name = imported_name; | |
794684b6 | 10502 | |
32019081 JK |
10503 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10504 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10505 | child_die = child_die->sibling) |
32019081 JK |
10506 | { |
10507 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10508 | represented by an imported module entry with an import attribute | |
10509 | referring to the module and owned entries corresponding to those | |
10510 | entities that are renamed as part of being imported. */ | |
10511 | ||
10512 | if (child_die->tag != DW_TAG_imported_declaration) | |
10513 | { | |
b98664d3 | 10514 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10515 | "- DIE at %s [in module %s]"), |
10516 | sect_offset_str (child_die->sect_off), | |
10517 | objfile_name (objfile)); | |
32019081 JK |
10518 | continue; |
10519 | } | |
10520 | ||
10521 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10522 | if (import_attr == NULL) | |
10523 | { | |
b98664d3 | 10524 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10525 | dwarf_tag_name (child_die->tag)); |
10526 | continue; | |
10527 | } | |
10528 | ||
10529 | imported_cu = cu; | |
10530 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10531 | &imported_cu); | |
10532 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10533 | if (imported_name == NULL) | |
10534 | { | |
b98664d3 | 10535 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10536 | "imported name - DIE at %s [in module %s]"), |
10537 | sect_offset_str (child_die->sect_off), | |
10538 | objfile_name (objfile)); | |
32019081 JK |
10539 | continue; |
10540 | } | |
10541 | ||
eb1e02fd | 10542 | excludes.push_back (imported_name); |
32019081 JK |
10543 | |
10544 | process_die (child_die, cu); | |
10545 | } | |
10546 | ||
804d2729 | 10547 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10548 | import_prefix, |
10549 | canonical_name, | |
10550 | import_alias, | |
10551 | imported_declaration, | |
10552 | excludes, | |
10553 | 0, | |
10554 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10555 | } |
10556 | ||
5230b05a WT |
10557 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10558 | types, but gives them a size of zero. Starting with version 14, | |
10559 | ICC is compatible with GCC. */ | |
10560 | ||
9068261f | 10561 | static bool |
5230b05a WT |
10562 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10563 | { | |
10564 | if (!cu->checked_producer) | |
10565 | check_producer (cu); | |
10566 | ||
10567 | return cu->producer_is_icc_lt_14; | |
10568 | } | |
10569 | ||
eb77c9df AB |
10570 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10571 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10572 | which says that void functions should not have a DW_AT_type. */ | |
10573 | ||
10574 | static bool | |
10575 | producer_is_icc (struct dwarf2_cu *cu) | |
10576 | { | |
10577 | if (!cu->checked_producer) | |
10578 | check_producer (cu); | |
10579 | ||
10580 | return cu->producer_is_icc; | |
10581 | } | |
10582 | ||
1b80a9fa JK |
10583 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10584 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10585 | this, it was first present in GCC release 4.3.0. */ | |
10586 | ||
9068261f | 10587 | static bool |
1b80a9fa JK |
10588 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10589 | { | |
10590 | if (!cu->checked_producer) | |
10591 | check_producer (cu); | |
10592 | ||
10593 | return cu->producer_is_gcc_lt_4_3; | |
10594 | } | |
10595 | ||
d721ba37 PA |
10596 | static file_and_directory |
10597 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10598 | { |
d721ba37 PA |
10599 | file_and_directory res; |
10600 | ||
9291a0cd TT |
10601 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10602 | is not a source language identifier. */ | |
d721ba37 PA |
10603 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10604 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10605 | |
d721ba37 PA |
10606 | if (res.comp_dir == NULL |
10607 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10608 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10609 | { |
d721ba37 PA |
10610 | res.comp_dir_storage = ldirname (res.name); |
10611 | if (!res.comp_dir_storage.empty ()) | |
10612 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10613 | } |
d721ba37 | 10614 | if (res.comp_dir != NULL) |
9291a0cd TT |
10615 | { |
10616 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10617 | directory, get rid of it. */ | |
d721ba37 | 10618 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10619 | |
d721ba37 PA |
10620 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10621 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10622 | } |
10623 | ||
d721ba37 PA |
10624 | if (res.name == NULL) |
10625 | res.name = "<unknown>"; | |
10626 | ||
10627 | return res; | |
9291a0cd TT |
10628 | } |
10629 | ||
f4dc4d17 DE |
10630 | /* Handle DW_AT_stmt_list for a compilation unit. |
10631 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10632 | COMP_DIR is the compilation directory. LOWPC is passed to |
10633 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10634 | |
10635 | static void | |
10636 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10637 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10638 | { |
976ca316 | 10639 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10640 | struct attribute *attr; |
527f3840 JK |
10641 | struct line_header line_header_local; |
10642 | hashval_t line_header_local_hash; | |
527f3840 JK |
10643 | void **slot; |
10644 | int decode_mapping; | |
2ab95328 | 10645 | |
f4dc4d17 DE |
10646 | gdb_assert (! cu->per_cu->is_debug_types); |
10647 | ||
2ab95328 | 10648 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 10649 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
10650 | return; |
10651 | ||
d4df075e | 10652 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
10653 | |
10654 | /* The line header hash table is only created if needed (it exists to | |
10655 | prevent redundant reading of the line table for partial_units). | |
10656 | If we're given a partial_unit, we'll need it. If we're given a | |
10657 | compile_unit, then use the line header hash table if it's already | |
10658 | created, but don't create one just yet. */ | |
10659 | ||
976ca316 | 10660 | if (per_objfile->line_header_hash == NULL |
527f3840 | 10661 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10662 | { |
976ca316 | 10663 | per_objfile->line_header_hash |
d15acc42 TT |
10664 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10665 | line_header_eq_voidp, | |
10666 | free_line_header_voidp, | |
10667 | xcalloc, xfree)); | |
527f3840 | 10668 | } |
2ab95328 | 10669 | |
9c541725 | 10670 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10671 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10672 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 10673 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 10674 | { |
976ca316 | 10675 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10676 | &line_header_local, |
10677 | line_header_local_hash, NO_INSERT); | |
10678 | ||
10679 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10680 | is not present in *SLOT (since if there is something in *SLOT then | |
10681 | it will be for a partial_unit). */ | |
10682 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10683 | { |
527f3840 | 10684 | gdb_assert (*slot != NULL); |
9a3c8263 | 10685 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10686 | return; |
dee91e82 | 10687 | } |
2ab95328 | 10688 | } |
527f3840 JK |
10689 | |
10690 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10691 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10692 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10693 | if (lh == NULL) | |
527f3840 | 10694 | return; |
4c8aa72d PA |
10695 | |
10696 | cu->line_header = lh.release (); | |
10697 | cu->line_header_die_owner = die; | |
527f3840 | 10698 | |
976ca316 | 10699 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
10700 | slot = NULL; |
10701 | else | |
10702 | { | |
976ca316 | 10703 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10704 | &line_header_local, |
10705 | line_header_local_hash, INSERT); | |
10706 | gdb_assert (slot != NULL); | |
10707 | } | |
10708 | if (slot != NULL && *slot == NULL) | |
10709 | { | |
10710 | /* This newly decoded line number information unit will be owned | |
10711 | by line_header_hash hash table. */ | |
10712 | *slot = cu->line_header; | |
4c8aa72d | 10713 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10714 | } |
10715 | else | |
10716 | { | |
10717 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 10718 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
10719 | line_header for this CU - it may happen at most once for each line |
10720 | number information unit. And if we're not using line_header_hash | |
10721 | then this is what we want as well. */ | |
10722 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10723 | } |
10724 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10725 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10726 | decode_mapping); | |
fff8551c | 10727 | |
2ab95328 TT |
10728 | } |
10729 | ||
95554aad | 10730 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10731 | |
c906108c | 10732 | static void |
e7c27a73 | 10733 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10734 | { |
976ca316 SM |
10735 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10736 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10737 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10738 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10739 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10740 | struct attribute *attr; | |
c906108c | 10741 | struct die_info *child_die; |
e142c38c | 10742 | CORE_ADDR baseaddr; |
6e70227d | 10743 | |
380618d6 | 10744 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10745 | baseaddr = objfile->text_section_offset (); |
c906108c | 10746 | |
fae299cd | 10747 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10748 | |
10749 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10750 | from finish_block. */ | |
2acceee2 | 10751 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10752 | lowpc = highpc; |
3e29f34a | 10753 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10754 | |
d721ba37 | 10755 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10756 | |
f4b8a18d KW |
10757 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10758 | standardised yet. As a workaround for the language detection we fall | |
10759 | back to the DW_AT_producer string. */ | |
10760 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10761 | cu->language = language_opencl; | |
10762 | ||
3019eac3 DE |
10763 | /* Similar hack for Go. */ |
10764 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10765 | set_cu_language (DW_LANG_Go, cu); | |
10766 | ||
c24bdb02 | 10767 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10768 | |
10769 | /* Decode line number information if present. We do this before | |
10770 | processing child DIEs, so that the line header table is available | |
10771 | for DW_AT_decl_file. */ | |
d721ba37 | 10772 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10773 | |
10774 | /* Process all dies in compilation unit. */ | |
10775 | if (die->child != NULL) | |
10776 | { | |
10777 | child_die = die->child; | |
10778 | while (child_die && child_die->tag) | |
10779 | { | |
10780 | process_die (child_die, cu); | |
436c571c | 10781 | child_die = child_die->sibling; |
3019eac3 DE |
10782 | } |
10783 | } | |
10784 | ||
10785 | /* Decode macro information, if present. Dwarf 2 macro information | |
10786 | refers to information in the line number info statement program | |
10787 | header, so we can only read it if we've read the header | |
10788 | successfully. */ | |
0af92d60 JK |
10789 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10790 | if (attr == NULL) | |
10791 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 10792 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
10793 | { |
10794 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10795 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10796 | |
529908cb | 10797 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
10798 | } |
10799 | else | |
10800 | { | |
10801 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 10802 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 10803 | { |
529908cb | 10804 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 10805 | |
43f3e411 | 10806 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10807 | } |
10808 | } | |
3019eac3 DE |
10809 | } |
10810 | ||
c24bdb02 KS |
10811 | void |
10812 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10813 | { |
f4dc4d17 DE |
10814 | struct type_unit_group *tu_group; |
10815 | int first_time; | |
3019eac3 | 10816 | struct attribute *attr; |
9c541725 | 10817 | unsigned int i; |
0186c6a7 | 10818 | struct signatured_type *sig_type; |
3019eac3 | 10819 | |
f4dc4d17 | 10820 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10821 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10822 | |
c24bdb02 | 10823 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10824 | |
f4dc4d17 | 10825 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10826 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10827 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10828 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10829 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10830 | |
10831 | /* If we've already processed this stmt_list there's no real need to | |
10832 | do it again, we could fake it and just recreate the part we need | |
10833 | (file name,index -> symtab mapping). If data shows this optimization | |
10834 | is useful we can do it then. */ | |
8adb8487 TT |
10835 | type_unit_group_unshareable *tug_unshare |
10836 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
10837 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
10838 | |
10839 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10840 | debug info. */ | |
fff8551c | 10841 | line_header_up lh; |
d4df075e | 10842 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 10843 | { |
d4df075e | 10844 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 10845 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10846 | } |
10847 | if (lh == NULL) | |
10848 | { | |
10849 | if (first_time) | |
c24bdb02 | 10850 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10851 | else |
10852 | { | |
8adb8487 | 10853 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 10854 | gdb_assert (m_builder == nullptr); |
8adb8487 | 10855 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
10856 | m_builder.reset (new struct buildsym_compunit |
10857 | (COMPUNIT_OBJFILE (cust), "", | |
10858 | COMPUNIT_DIRNAME (cust), | |
10859 | compunit_language (cust), | |
10860 | 0, cust)); | |
770479f2 | 10861 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 10862 | } |
f4dc4d17 | 10863 | return; |
3019eac3 DE |
10864 | } |
10865 | ||
c24bdb02 KS |
10866 | line_header = lh.release (); |
10867 | line_header_die_owner = die; | |
3019eac3 | 10868 | |
f4dc4d17 DE |
10869 | if (first_time) |
10870 | { | |
c24bdb02 | 10871 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10872 | |
1fd60fc0 DE |
10873 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10874 | still initializing it, and our caller (a few levels up) | |
10875 | process_full_type_unit still needs to know if this is the first | |
10876 | time. */ | |
10877 | ||
8adb8487 | 10878 | tug_unshare->symtabs |
4ac93832 TT |
10879 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
10880 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10881 | |
7ba99d21 AT |
10882 | auto &file_names = line_header->file_names (); |
10883 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10884 | { |
7ba99d21 | 10885 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10886 | dwarf2_start_subfile (this, fe.name, |
10887 | fe.include_dir (line_header)); | |
10888 | buildsym_compunit *b = get_builder (); | |
10889 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10890 | { |
4c8aa72d PA |
10891 | /* NOTE: start_subfile will recognize when it's been |
10892 | passed a file it has already seen. So we can't | |
10893 | assume there's a simple mapping from | |
10894 | cu->line_header->file_names to subfiles, plus | |
10895 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10896 | b->get_current_subfile ()->symtab |
10897 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10898 | } |
10899 | ||
c24bdb02 | 10900 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 10901 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10902 | } |
10903 | } | |
10904 | else | |
3019eac3 | 10905 | { |
c24bdb02 | 10906 | gdb_assert (m_builder == nullptr); |
8adb8487 | 10907 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
10908 | m_builder.reset (new struct buildsym_compunit |
10909 | (COMPUNIT_OBJFILE (cust), "", | |
10910 | COMPUNIT_DIRNAME (cust), | |
10911 | compunit_language (cust), | |
10912 | 0, cust)); | |
770479f2 | 10913 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 10914 | |
7ba99d21 AT |
10915 | auto &file_names = line_header->file_names (); |
10916 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10917 | { |
7ba99d21 | 10918 | file_entry &fe = file_names[i]; |
8adb8487 | 10919 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 10920 | } |
3019eac3 DE |
10921 | } |
10922 | ||
f4dc4d17 DE |
10923 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10924 | so they don't have a "real" (so to speak) symtab anyway. | |
10925 | There is later code that will assign the main symtab to all symbols | |
10926 | that don't have one. We need to handle the case of a symbol with a | |
10927 | missing symtab (DW_AT_decl_file) anyway. */ | |
10928 | } | |
3019eac3 | 10929 | |
f4dc4d17 DE |
10930 | /* Process DW_TAG_type_unit. |
10931 | For TUs we want to skip the first top level sibling if it's not the | |
10932 | actual type being defined by this TU. In this case the first top | |
10933 | level sibling is there to provide context only. */ | |
3019eac3 | 10934 | |
f4dc4d17 DE |
10935 | static void |
10936 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10937 | { | |
10938 | struct die_info *child_die; | |
3019eac3 | 10939 | |
f4dc4d17 DE |
10940 | prepare_one_comp_unit (cu, die, language_minimal); |
10941 | ||
10942 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10943 | We do this before processing child DIEs, so that the line header table | |
10944 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10945 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10946 | |
10947 | if (die->child != NULL) | |
10948 | { | |
10949 | child_die = die->child; | |
10950 | while (child_die && child_die->tag) | |
10951 | { | |
10952 | process_die (child_die, cu); | |
436c571c | 10953 | child_die = child_die->sibling; |
f4dc4d17 DE |
10954 | } |
10955 | } | |
3019eac3 DE |
10956 | } |
10957 | \f | |
80626a55 DE |
10958 | /* DWO/DWP files. |
10959 | ||
10960 | http://gcc.gnu.org/wiki/DebugFission | |
10961 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10962 | ||
10963 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10964 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10965 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10966 | |
10967 | static hashval_t | |
10968 | hash_dwo_file (const void *item) | |
10969 | { | |
9a3c8263 | 10970 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10971 | hashval_t hash; |
3019eac3 | 10972 | |
a2ce51a0 DE |
10973 | hash = htab_hash_string (dwo_file->dwo_name); |
10974 | if (dwo_file->comp_dir != NULL) | |
10975 | hash += htab_hash_string (dwo_file->comp_dir); | |
10976 | return hash; | |
3019eac3 DE |
10977 | } |
10978 | ||
10979 | static int | |
10980 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10981 | { | |
9a3c8263 SM |
10982 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10983 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10984 | |
a2ce51a0 DE |
10985 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10986 | return 0; | |
10987 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10988 | return lhs->comp_dir == rhs->comp_dir; | |
10989 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10990 | } |
10991 | ||
10992 | /* Allocate a hash table for DWO files. */ | |
10993 | ||
51ac9db5 | 10994 | static htab_up |
298e9637 | 10995 | allocate_dwo_file_hash_table () |
3019eac3 | 10996 | { |
51ac9db5 SM |
10997 | auto delete_dwo_file = [] (void *item) |
10998 | { | |
10999 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11000 | ||
11001 | delete dwo_file; | |
11002 | }; | |
11003 | ||
bc68fb19 TT |
11004 | return htab_up (htab_create_alloc (41, |
11005 | hash_dwo_file, | |
11006 | eq_dwo_file, | |
11007 | delete_dwo_file, | |
11008 | xcalloc, xfree)); | |
3019eac3 DE |
11009 | } |
11010 | ||
80626a55 DE |
11011 | /* Lookup DWO file DWO_NAME. */ |
11012 | ||
11013 | static void ** | |
976ca316 | 11014 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11015 | const char *dwo_name, |
11016 | const char *comp_dir) | |
80626a55 DE |
11017 | { |
11018 | struct dwo_file find_entry; | |
11019 | void **slot; | |
11020 | ||
976ca316 SM |
11021 | if (per_objfile->per_bfd->dwo_files == NULL) |
11022 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11023 | |
0ac5b59e DE |
11024 | find_entry.dwo_name = dwo_name; |
11025 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11026 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11027 | INSERT); |
80626a55 DE |
11028 | |
11029 | return slot; | |
11030 | } | |
11031 | ||
3019eac3 DE |
11032 | static hashval_t |
11033 | hash_dwo_unit (const void *item) | |
11034 | { | |
9a3c8263 | 11035 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11036 | |
11037 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11038 | return dwo_unit->signature; | |
11039 | } | |
11040 | ||
11041 | static int | |
11042 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11043 | { | |
9a3c8263 SM |
11044 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11045 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11046 | |
11047 | /* The signature is assumed to be unique within the DWO file. | |
11048 | So while object file CU dwo_id's always have the value zero, | |
11049 | that's OK, assuming each object file DWO file has only one CU, | |
11050 | and that's the rule for now. */ | |
11051 | return lhs->signature == rhs->signature; | |
11052 | } | |
11053 | ||
11054 | /* Allocate a hash table for DWO CUs,TUs. | |
11055 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11056 | ||
b0b6a987 | 11057 | static htab_up |
298e9637 | 11058 | allocate_dwo_unit_table () |
3019eac3 DE |
11059 | { |
11060 | /* Start out with a pretty small number. | |
11061 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11062 | return htab_up (htab_create_alloc (3, |
11063 | hash_dwo_unit, | |
11064 | eq_dwo_unit, | |
11065 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11066 | } |
11067 | ||
19c3d4c9 | 11068 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11069 | |
11070 | static void | |
19c3d4c9 DE |
11071 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11072 | const gdb_byte *info_ptr, | |
11073 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11074 | struct dwo_file *dwo_file, |
11075 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11076 | { |
11077 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11078 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11079 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11080 | |
a084a2a6 AT |
11081 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11082 | if (!signature.has_value ()) | |
3019eac3 | 11083 | { |
b98664d3 | 11084 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11085 | " its dwo_id [in module %s]"), |
9d8780f0 | 11086 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11087 | return; |
11088 | } | |
11089 | ||
3019eac3 | 11090 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11091 | dwo_unit->signature = *signature; |
8a0459fd | 11092 | dwo_unit->section = section; |
9c541725 | 11093 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11094 | dwo_unit->length = cu->per_cu->length; |
11095 | ||
6f738b01 SM |
11096 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11097 | sect_offset_str (sect_off), | |
11098 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11099 | } |
11100 | ||
33c5cd75 | 11101 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11102 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11103 | |
33c5cd75 | 11104 | static void |
976ca316 | 11105 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11106 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11107 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11108 | { |
976ca316 SM |
11109 | struct objfile *objfile = per_objfile->objfile; |
11110 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11111 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11112 | |
96b79293 | 11113 | section.read (objfile); |
33c5cd75 | 11114 | info_ptr = section.buffer; |
3019eac3 DE |
11115 | |
11116 | if (info_ptr == NULL) | |
33c5cd75 | 11117 | return; |
3019eac3 | 11118 | |
6f738b01 SM |
11119 | dwarf_read_debug_printf ("Reading %s for %s:", |
11120 | section.get_name (), | |
11121 | section.get_file_name ()); | |
3019eac3 | 11122 | |
33c5cd75 | 11123 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11124 | while (info_ptr < end_ptr) |
11125 | { | |
11126 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11127 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11128 | struct dwo_unit *dwo_unit; |
11129 | void **slot; | |
11130 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11131 | |
1859c670 | 11132 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11133 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11134 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11135 | per_cu.section = §ion; | |
11136 | ||
976ca316 | 11137 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11138 | if (!reader.dummy_p) |
11139 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11140 | &dwo_file, &read_unit); |
33c5cd75 DB |
11141 | info_ptr += per_cu.length; |
11142 | ||
11143 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11144 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11145 | continue; |
3019eac3 | 11146 | |
33c5cd75 | 11147 | if (cus_htab == NULL) |
298e9637 | 11148 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11149 | |
1859c670 | 11150 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11151 | struct dwo_unit); |
c0ab21c2 | 11152 | *dwo_unit = read_unit; |
b0b6a987 | 11153 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11154 | gdb_assert (slot != NULL); |
11155 | if (*slot != NULL) | |
19c3d4c9 | 11156 | { |
33c5cd75 DB |
11157 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11158 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11159 | |
b98664d3 | 11160 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11161 | " the entry at offset %s, signature %s"), |
11162 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11163 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11164 | } |
33c5cd75 | 11165 | *slot = (void *)dwo_unit; |
3019eac3 | 11166 | } |
3019eac3 DE |
11167 | } |
11168 | ||
80626a55 DE |
11169 | /* DWP file .debug_{cu,tu}_index section format: |
11170 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11171 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11172 | ||
11173 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11174 | officially standard DWP format was published with DWARF v5 and is called | |
11175 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11176 | |
d2415c6c DE |
11177 | DWP Version 1: |
11178 | ||
80626a55 DE |
11179 | Both index sections have the same format, and serve to map a 64-bit |
11180 | signature to a set of section numbers. Each section begins with a header, | |
11181 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11182 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11183 | aligned at 8-byte boundaries in the file. | |
11184 | ||
d2415c6c DE |
11185 | The index section header consists of: |
11186 | ||
11187 | V, 32 bit version number | |
11188 | -, 32 bits unused | |
11189 | N, 32 bit number of compilation units or type units in the index | |
11190 | M, 32 bit number of slots in the hash table | |
80626a55 | 11191 | |
d2415c6c | 11192 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11193 | |
d2415c6c DE |
11194 | The hash table begins at offset 16 in the section, and consists of an array |
11195 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11196 | order of the application binary). Unused slots in the hash table are 0. | |
11197 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11198 | |
d2415c6c DE |
11199 | The parallel table begins immediately after the hash table |
11200 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11201 | array of 32-bit indexes (using the byte order of the application binary), | |
11202 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11203 | table contains a 32-bit index into the pool of section numbers. For unused | |
11204 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11205 | |
73869dc2 DE |
11206 | The pool of section numbers begins immediately following the hash table |
11207 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11208 | section numbers consists of an array of 32-bit words (using the byte order | |
11209 | of the application binary). Each item in the array is indexed starting | |
11210 | from 0. The hash table entry provides the index of the first section | |
11211 | number in the set. Additional section numbers in the set follow, and the | |
11212 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11213 | ||
11214 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11215 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11216 | be the second entry. Other members of the set may follow in any order. | |
11217 | ||
11218 | --- | |
11219 | ||
d2854d8d | 11220 | DWP Versions 2 and 5: |
73869dc2 | 11221 | |
d2854d8d | 11222 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11223 | and the entries in the index tables are now offsets into these sections. |
11224 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11225 | section. | |
11226 | ||
11227 | Index Section Contents: | |
11228 | Header | |
11229 | Hash Table of Signatures dwp_hash_table.hash_table | |
11230 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11231 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11232 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11233 | |
11234 | The index section header consists of: | |
11235 | ||
11236 | V, 32 bit version number | |
11237 | L, 32 bit number of columns in the table of section offsets | |
11238 | N, 32 bit number of compilation units or type units in the index | |
11239 | M, 32 bit number of slots in the hash table | |
11240 | ||
11241 | Numbers are recorded using the byte order of the application binary. | |
11242 | ||
11243 | The hash table has the same format as version 1. | |
11244 | The parallel table of indices has the same format as version 1, | |
11245 | except that the entries are origin-1 indices into the table of sections | |
11246 | offsets and the table of section sizes. | |
11247 | ||
11248 | The table of offsets begins immediately following the parallel table | |
11249 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11250 | a two-dimensional array of 32-bit words (using the byte order of the | |
11251 | application binary), with L columns and N+1 rows, in row-major order. | |
11252 | Each row in the array is indexed starting from 0. The first row provides | |
11253 | a key to the remaining rows: each column in this row provides an identifier | |
11254 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11255 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11256 | |
11257 | DW_SECT_INFO 1 .debug_info.dwo | |
11258 | DW_SECT_TYPES 2 .debug_types.dwo | |
11259 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11260 | DW_SECT_LINE 4 .debug_line.dwo | |
11261 | DW_SECT_LOC 5 .debug_loc.dwo | |
11262 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11263 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11264 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11265 | ||
d2854d8d CT |
11266 | The section identifiers for Version 5 are: |
11267 | ||
11268 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11269 | DW_SECT_RESERVED_V5 2 -- | |
11270 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11271 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11272 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11273 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11274 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11275 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11276 | ||
73869dc2 DE |
11277 | The offsets provided by the CU and TU index sections are the base offsets |
11278 | for the contributions made by each CU or TU to the corresponding section | |
11279 | in the package file. Each CU and TU header contains an abbrev_offset | |
11280 | field, used to find the abbreviations table for that CU or TU within the | |
11281 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11282 | be interpreted as relative to the base offset given in the index section. | |
11283 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11284 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11285 | and offsets into other debug sections obtained from DWARF attributes should | |
11286 | also be interpreted as relative to the corresponding base offset. | |
11287 | ||
11288 | The table of sizes begins immediately following the table of offsets. | |
11289 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11290 | with L columns and N rows, in row-major order. Each row in the array is | |
11291 | indexed starting from 1 (row 0 is shared by the two tables). | |
11292 | ||
11293 | --- | |
11294 | ||
11295 | Hash table lookup is handled the same in version 1 and 2: | |
11296 | ||
11297 | We assume that N and M will not exceed 2^32 - 1. | |
11298 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11299 | ||
d2415c6c DE |
11300 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11301 | in the hash table is located as follows: | |
80626a55 | 11302 | |
d2415c6c DE |
11303 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11304 | the low-order k bits all set to 1. | |
80626a55 | 11305 | |
d2415c6c | 11306 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11307 | |
d2415c6c DE |
11308 | 3) If the hash table entry at index H matches the signature, use that |
11309 | entry. If the hash table entry at index H is unused (all zeroes), | |
11310 | terminate the search: the signature is not present in the table. | |
80626a55 | 11311 | |
d2415c6c | 11312 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11313 | |
d2415c6c | 11314 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11315 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11316 | |
11317 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11318 | .debug_{info,types}.dwo in DWP_FILE. | |
11319 | Returns NULL if there isn't one. | |
11320 | Note: This function processes DWP files only, not DWO files. */ | |
11321 | ||
11322 | static struct dwp_hash_table * | |
976ca316 | 11323 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11324 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11325 | { |
976ca316 | 11326 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11327 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11328 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11329 | struct dwarf2_section_info *index; |
73869dc2 | 11330 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11331 | struct dwp_hash_table *htab; |
11332 | ||
11333 | if (is_debug_types) | |
11334 | index = &dwp_file->sections.tu_index; | |
11335 | else | |
11336 | index = &dwp_file->sections.cu_index; | |
11337 | ||
96b79293 | 11338 | if (index->empty ()) |
80626a55 | 11339 | return NULL; |
96b79293 | 11340 | index->read (objfile); |
80626a55 DE |
11341 | |
11342 | index_ptr = index->buffer; | |
11343 | index_end = index_ptr + index->size; | |
11344 | ||
d2854d8d CT |
11345 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11346 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11347 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11348 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11349 | index_ptr += 4; |
d2854d8d | 11350 | if (version == 2 || version == 5) |
73869dc2 DE |
11351 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11352 | else | |
11353 | nr_columns = 0; | |
11354 | index_ptr += 4; | |
80626a55 DE |
11355 | nr_units = read_4_bytes (dbfd, index_ptr); |
11356 | index_ptr += 4; | |
11357 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11358 | index_ptr += 4; | |
11359 | ||
d2854d8d | 11360 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11361 | { |
21aa081e | 11362 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11363 | " [in module %s]"), |
21aa081e | 11364 | pulongest (version), dwp_file->name); |
80626a55 DE |
11365 | } |
11366 | if (nr_slots != (nr_slots & -nr_slots)) | |
11367 | { | |
21aa081e | 11368 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11369 | " is not power of 2 [in module %s]"), |
21aa081e | 11370 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11371 | } |
11372 | ||
976ca316 | 11373 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11374 | htab->version = version; |
11375 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11376 | htab->nr_units = nr_units; |
11377 | htab->nr_slots = nr_slots; | |
11378 | htab->hash_table = index_ptr; | |
11379 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11380 | |
11381 | /* Exit early if the table is empty. */ | |
11382 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11383 | || (version == 2 && nr_columns == 0) |
11384 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11385 | { |
11386 | /* All must be zero. */ | |
11387 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11388 | || (version == 2 && nr_columns != 0) |
11389 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11390 | { |
b98664d3 | 11391 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11392 | " all zero [in modules %s]"), |
11393 | dwp_file->name); | |
11394 | } | |
11395 | return htab; | |
11396 | } | |
11397 | ||
11398 | if (version == 1) | |
11399 | { | |
11400 | htab->section_pool.v1.indices = | |
11401 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11402 | /* It's harder to decide whether the section is too small in v1. | |
11403 | V1 is deprecated anyway so we punt. */ | |
11404 | } | |
d2854d8d | 11405 | else if (version == 2) |
73869dc2 DE |
11406 | { |
11407 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11408 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11409 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11410 | /* Reverse map for error checking. */ |
11411 | int ids_seen[DW_SECT_MAX + 1]; | |
11412 | int i; | |
11413 | ||
11414 | if (nr_columns < 2) | |
11415 | { | |
11416 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11417 | " in section table [in module %s]"), | |
11418 | dwp_file->name); | |
11419 | } | |
11420 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11421 | { | |
11422 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11423 | " in section table [in module %s]"), | |
11424 | dwp_file->name); | |
11425 | } | |
04fd5eed GB |
11426 | memset (ids, 255, sizeof_ids); |
11427 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11428 | for (i = 0; i < nr_columns; ++i) |
11429 | { | |
11430 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11431 | ||
11432 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11433 | { | |
11434 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11435 | " in section table [in module %s]"), | |
11436 | id, dwp_file->name); | |
11437 | } | |
11438 | if (ids_seen[id] != -1) | |
11439 | { | |
11440 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11441 | " id %d in section table [in module %s]"), | |
11442 | id, dwp_file->name); | |
11443 | } | |
11444 | ids_seen[id] = i; | |
11445 | ids[i] = id; | |
11446 | } | |
11447 | /* Must have exactly one info or types section. */ | |
11448 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11449 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11450 | != 1) | |
11451 | { | |
11452 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11453 | " DWO info/types section [in module %s]"), | |
11454 | dwp_file->name); | |
11455 | } | |
11456 | /* Must have an abbrev section. */ | |
11457 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11458 | { | |
11459 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11460 | " section [in module %s]"), | |
11461 | dwp_file->name); | |
11462 | } | |
11463 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11464 | htab->section_pool.v2.sizes = | |
11465 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11466 | * nr_units * nr_columns); | |
11467 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11468 | * nr_units * nr_columns)) | |
11469 | > index_end) | |
11470 | { | |
11471 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11472 | " [in module %s]"), | |
11473 | dwp_file->name); | |
11474 | } | |
11475 | } | |
d2854d8d CT |
11476 | else /* version == 5 */ |
11477 | { | |
11478 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11479 | int *ids = htab->section_pool.v5.section_ids; | |
11480 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11481 | /* Reverse map for error checking. */ | |
11482 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11483 | ||
11484 | if (nr_columns < 2) | |
11485 | { | |
11486 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11487 | " in section table [in module %s]"), | |
11488 | dwp_file->name); | |
11489 | } | |
11490 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11491 | { | |
11492 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11493 | " in section table [in module %s]"), | |
11494 | dwp_file->name); | |
11495 | } | |
11496 | memset (ids, 255, sizeof_ids); | |
11497 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11498 | for (int i = 0; i < nr_columns; ++i) | |
11499 | { | |
11500 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11501 | ||
11502 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11503 | { | |
11504 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11505 | " in section table [in module %s]"), | |
11506 | id, dwp_file->name); | |
11507 | } | |
11508 | if (ids_seen[id] != -1) | |
11509 | { | |
11510 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11511 | " id %d in section table [in module %s]"), | |
11512 | id, dwp_file->name); | |
11513 | } | |
11514 | ids_seen[id] = i; | |
11515 | ids[i] = id; | |
11516 | } | |
11517 | /* Must have seen an info section. */ | |
11518 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11519 | { | |
11520 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11521 | " DWO info/types section [in module %s]"), | |
11522 | dwp_file->name); | |
11523 | } | |
11524 | /* Must have an abbrev section. */ | |
11525 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11526 | { | |
11527 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11528 | " section [in module %s]"), | |
11529 | dwp_file->name); | |
11530 | } | |
11531 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11532 | htab->section_pool.v5.sizes | |
11533 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11534 | * nr_units * nr_columns); | |
11535 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11536 | * nr_units * nr_columns)) | |
11537 | > index_end) | |
11538 | { | |
11539 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11540 | " [in module %s]"), | |
11541 | dwp_file->name); | |
11542 | } | |
11543 | } | |
80626a55 DE |
11544 | |
11545 | return htab; | |
11546 | } | |
11547 | ||
11548 | /* Update SECTIONS with the data from SECTP. | |
11549 | ||
5bb6e9dd TT |
11550 | This function is like the other "locate" section routines, but in |
11551 | this context the sections to read comes from the DWP V1 hash table, | |
11552 | not the full ELF section table. | |
80626a55 DE |
11553 | |
11554 | The result is non-zero for success, or zero if an error was found. */ | |
11555 | ||
11556 | static int | |
73869dc2 DE |
11557 | locate_v1_virtual_dwo_sections (asection *sectp, |
11558 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11559 | { |
11560 | const struct dwop_section_names *names = &dwop_section_names; | |
11561 | ||
fbedd546 | 11562 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 DE |
11563 | { |
11564 | /* There can be only one. */ | |
049412e3 | 11565 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11566 | return 0; |
049412e3 | 11567 | sections->abbrev.s.section = sectp; |
fd361982 | 11568 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 11569 | } |
fbedd546 TT |
11570 | else if (names->info_dwo.matches (sectp->name) |
11571 | || names->types_dwo.matches (sectp->name)) | |
80626a55 DE |
11572 | { |
11573 | /* There can be only one. */ | |
049412e3 | 11574 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11575 | return 0; |
049412e3 | 11576 | sections->info_or_types.s.section = sectp; |
fd361982 | 11577 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 | 11578 | } |
fbedd546 | 11579 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 DE |
11580 | { |
11581 | /* There can be only one. */ | |
049412e3 | 11582 | if (sections->line.s.section != NULL) |
80626a55 | 11583 | return 0; |
049412e3 | 11584 | sections->line.s.section = sectp; |
fd361982 | 11585 | sections->line.size = bfd_section_size (sectp); |
80626a55 | 11586 | } |
fbedd546 | 11587 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 DE |
11588 | { |
11589 | /* There can be only one. */ | |
049412e3 | 11590 | if (sections->loc.s.section != NULL) |
80626a55 | 11591 | return 0; |
049412e3 | 11592 | sections->loc.s.section = sectp; |
fd361982 | 11593 | sections->loc.size = bfd_section_size (sectp); |
80626a55 | 11594 | } |
fbedd546 | 11595 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 DE |
11596 | { |
11597 | /* There can be only one. */ | |
049412e3 | 11598 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11599 | return 0; |
049412e3 | 11600 | sections->macinfo.s.section = sectp; |
fd361982 | 11601 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 11602 | } |
fbedd546 | 11603 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 DE |
11604 | { |
11605 | /* There can be only one. */ | |
049412e3 | 11606 | if (sections->macro.s.section != NULL) |
80626a55 | 11607 | return 0; |
049412e3 | 11608 | sections->macro.s.section = sectp; |
fd361982 | 11609 | sections->macro.size = bfd_section_size (sectp); |
80626a55 | 11610 | } |
fbedd546 | 11611 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 DE |
11612 | { |
11613 | /* There can be only one. */ | |
049412e3 | 11614 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11615 | return 0; |
049412e3 | 11616 | sections->str_offsets.s.section = sectp; |
fd361982 | 11617 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11618 | } |
11619 | else | |
11620 | { | |
11621 | /* No other kind of section is valid. */ | |
11622 | return 0; | |
11623 | } | |
11624 | ||
11625 | return 1; | |
11626 | } | |
11627 | ||
73869dc2 DE |
11628 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11629 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11630 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11631 | This is for DWP version 1 files. */ | |
80626a55 DE |
11632 | |
11633 | static struct dwo_unit * | |
976ca316 | 11634 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11635 | struct dwp_file *dwp_file, |
73869dc2 DE |
11636 | uint32_t unit_index, |
11637 | const char *comp_dir, | |
11638 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11639 | { |
73869dc2 DE |
11640 | const struct dwp_hash_table *dwp_htab = |
11641 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11642 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11643 | const char *kind = is_debug_types ? "TU" : "CU"; |
11644 | struct dwo_file *dwo_file; | |
11645 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11646 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11647 | void **dwo_file_slot; |
80626a55 DE |
11648 | int i; |
11649 | ||
73869dc2 DE |
11650 | gdb_assert (dwp_file->version == 1); |
11651 | ||
6f738b01 SM |
11652 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
11653 | kind, pulongest (unit_index), hex_string (signature), | |
11654 | dwp_file->name); | |
80626a55 | 11655 | |
19ac8c2e | 11656 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11657 | Put a limit on the number of sections we look for so that bad data |
11658 | doesn't cause us to loop forever. */ | |
11659 | ||
73869dc2 | 11660 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11661 | (1 /* .debug_info or .debug_types */ \ |
11662 | + 1 /* .debug_abbrev */ \ | |
11663 | + 1 /* .debug_line */ \ | |
11664 | + 1 /* .debug_loc */ \ | |
11665 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11666 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11667 | + 1 /* trailing zero */) |
11668 | ||
11669 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11670 | |
73869dc2 | 11671 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11672 | { |
11673 | asection *sectp; | |
11674 | uint32_t section_nr = | |
11675 | read_4_bytes (dbfd, | |
73869dc2 DE |
11676 | dwp_htab->section_pool.v1.indices |
11677 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11678 | |
11679 | if (section_nr == 0) | |
11680 | break; | |
11681 | if (section_nr >= dwp_file->num_sections) | |
11682 | { | |
11683 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11684 | " [in module %s]"), | |
11685 | dwp_file->name); | |
11686 | } | |
11687 | ||
11688 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11689 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11690 | { |
11691 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11692 | " [in module %s]"), | |
11693 | dwp_file->name); | |
11694 | } | |
11695 | } | |
11696 | ||
11697 | if (i < 2 | |
96b79293 TT |
11698 | || sections.info_or_types.empty () |
11699 | || sections.abbrev.empty ()) | |
80626a55 DE |
11700 | { |
11701 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11702 | " [in module %s]"), | |
11703 | dwp_file->name); | |
11704 | } | |
73869dc2 | 11705 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11706 | { |
11707 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11708 | " [in module %s]"), | |
11709 | dwp_file->name); | |
11710 | } | |
11711 | ||
11712 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11713 | have dwo_unit "live" in that. At least for now. | |
11714 | ||
11715 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11716 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11717 | file, we can combine them back into a virtual DWO file to save space |
11718 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11719 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11720 | ||
791afaa2 TT |
11721 | std::string virtual_dwo_name = |
11722 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11723 | sections.abbrev.get_id (), |
11724 | sections.line.get_id (), | |
11725 | sections.loc.get_id (), | |
11726 | sections.str_offsets.get_id ()); | |
80626a55 | 11727 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11728 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11729 | comp_dir); |
80626a55 DE |
11730 | /* Create one if necessary. */ |
11731 | if (*dwo_file_slot == NULL) | |
11732 | { | |
6f738b01 SM |
11733 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
11734 | virtual_dwo_name.c_str ()); | |
11735 | ||
51ac9db5 | 11736 | dwo_file = new struct dwo_file; |
976ca316 | 11737 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11738 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11739 | dwo_file->sections.abbrev = sections.abbrev; |
11740 | dwo_file->sections.line = sections.line; | |
11741 | dwo_file->sections.loc = sections.loc; | |
11742 | dwo_file->sections.macinfo = sections.macinfo; | |
11743 | dwo_file->sections.macro = sections.macro; | |
11744 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11745 | /* The "str" section is global to the entire DWP file. */ | |
11746 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11747 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11748 | there's no need to record it in dwo_file. |
11749 | Also, we can't simply record type sections in dwo_file because | |
11750 | we record a pointer into the vector in dwo_unit. As we collect more | |
11751 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11752 | for it, invalidating all copies of pointers into the previous |
11753 | contents. */ | |
80626a55 DE |
11754 | *dwo_file_slot = dwo_file; |
11755 | } | |
11756 | else | |
11757 | { | |
6f738b01 SM |
11758 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
11759 | virtual_dwo_name.c_str ()); | |
11760 | ||
9a3c8263 | 11761 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11762 | } |
80626a55 | 11763 | |
976ca316 | 11764 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11765 | dwo_unit->dwo_file = dwo_file; |
11766 | dwo_unit->signature = signature; | |
8d749320 | 11767 | dwo_unit->section = |
976ca316 | 11768 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11769 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11770 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11771 | |
11772 | return dwo_unit; | |
11773 | } | |
11774 | ||
d2854d8d CT |
11775 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
11776 | simplify them. Given a pointer to the containing section SECTION, and | |
11777 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
11778 | virtual section of just that piece. */ | |
73869dc2 DE |
11779 | |
11780 | static struct dwarf2_section_info | |
d2854d8d CT |
11781 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
11782 | struct dwarf2_section_info *section, | |
11783 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
11784 | { |
11785 | struct dwarf2_section_info result; | |
11786 | asection *sectp; | |
11787 | ||
11788 | gdb_assert (section != NULL); | |
11789 | gdb_assert (!section->is_virtual); | |
11790 | ||
11791 | memset (&result, 0, sizeof (result)); | |
11792 | result.s.containing_section = section; | |
dc4ccb6f | 11793 | result.is_virtual = true; |
73869dc2 DE |
11794 | |
11795 | if (size == 0) | |
11796 | return result; | |
11797 | ||
96b79293 | 11798 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11799 | |
11800 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11801 | bounds of the real section. This is a pretty-rare event, so just | |
11802 | flag an error (easier) instead of a warning and trying to cope. */ | |
11803 | if (sectp == NULL | |
fd361982 | 11804 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11805 | { |
d2854d8d | 11806 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 11807 | " in section %s [in module %s]"), |
fd361982 | 11808 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 11809 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
11810 | } |
11811 | ||
11812 | result.virtual_offset = offset; | |
11813 | result.size = size; | |
11814 | return result; | |
11815 | } | |
11816 | ||
11817 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11818 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11819 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11820 | This is for DWP version 2 files. */ | |
11821 | ||
11822 | static struct dwo_unit * | |
976ca316 | 11823 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11824 | struct dwp_file *dwp_file, |
73869dc2 DE |
11825 | uint32_t unit_index, |
11826 | const char *comp_dir, | |
11827 | ULONGEST signature, int is_debug_types) | |
11828 | { | |
73869dc2 DE |
11829 | const struct dwp_hash_table *dwp_htab = |
11830 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11831 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11832 | const char *kind = is_debug_types ? "TU" : "CU"; |
11833 | struct dwo_file *dwo_file; | |
11834 | struct dwo_unit *dwo_unit; | |
d2854d8d | 11835 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 11836 | void **dwo_file_slot; |
73869dc2 DE |
11837 | int i; |
11838 | ||
11839 | gdb_assert (dwp_file->version == 2); | |
11840 | ||
6f738b01 SM |
11841 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
11842 | kind, pulongest (unit_index), hex_string (signature), | |
11843 | dwp_file->name); | |
73869dc2 DE |
11844 | |
11845 | /* Fetch the section offsets of this DWO unit. */ | |
11846 | ||
11847 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11848 | |
11849 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11850 | { | |
11851 | uint32_t offset = read_4_bytes (dbfd, | |
11852 | dwp_htab->section_pool.v2.offsets | |
11853 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11854 | + i) | |
11855 | * sizeof (uint32_t))); | |
11856 | uint32_t size = read_4_bytes (dbfd, | |
11857 | dwp_htab->section_pool.v2.sizes | |
11858 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11859 | + i) | |
11860 | * sizeof (uint32_t))); | |
11861 | ||
11862 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11863 | { | |
11864 | case DW_SECT_INFO: | |
11865 | case DW_SECT_TYPES: | |
11866 | sections.info_or_types_offset = offset; | |
11867 | sections.info_or_types_size = size; | |
11868 | break; | |
11869 | case DW_SECT_ABBREV: | |
11870 | sections.abbrev_offset = offset; | |
11871 | sections.abbrev_size = size; | |
11872 | break; | |
11873 | case DW_SECT_LINE: | |
11874 | sections.line_offset = offset; | |
11875 | sections.line_size = size; | |
11876 | break; | |
11877 | case DW_SECT_LOC: | |
11878 | sections.loc_offset = offset; | |
11879 | sections.loc_size = size; | |
11880 | break; | |
11881 | case DW_SECT_STR_OFFSETS: | |
11882 | sections.str_offsets_offset = offset; | |
11883 | sections.str_offsets_size = size; | |
11884 | break; | |
11885 | case DW_SECT_MACINFO: | |
11886 | sections.macinfo_offset = offset; | |
11887 | sections.macinfo_size = size; | |
11888 | break; | |
11889 | case DW_SECT_MACRO: | |
11890 | sections.macro_offset = offset; | |
11891 | sections.macro_size = size; | |
11892 | break; | |
11893 | } | |
11894 | } | |
11895 | ||
11896 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11897 | have dwo_unit "live" in that. At least for now. | |
11898 | ||
11899 | The DWP file can be made up of a random collection of CUs and TUs. | |
11900 | However, for each CU + set of TUs that came from the same original DWO | |
11901 | file, we can combine them back into a virtual DWO file to save space | |
11902 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11903 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11904 | ||
791afaa2 TT |
11905 | std::string virtual_dwo_name = |
11906 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11907 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11908 | (long) (sections.line_size ? sections.line_offset : 0), | |
11909 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11910 | (long) (sections.str_offsets_size | |
11911 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11912 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11913 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11914 | comp_dir); |
73869dc2 DE |
11915 | /* Create one if necessary. */ |
11916 | if (*dwo_file_slot == NULL) | |
11917 | { | |
6f738b01 SM |
11918 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
11919 | virtual_dwo_name.c_str ()); | |
11920 | ||
51ac9db5 | 11921 | dwo_file = new struct dwo_file; |
976ca316 | 11922 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11923 | dwo_file->comp_dir = comp_dir; |
11924 | dwo_file->sections.abbrev = | |
d2854d8d CT |
11925 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
11926 | sections.abbrev_offset, | |
11927 | sections.abbrev_size); | |
73869dc2 | 11928 | dwo_file->sections.line = |
d2854d8d CT |
11929 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
11930 | sections.line_offset, | |
11931 | sections.line_size); | |
73869dc2 | 11932 | dwo_file->sections.loc = |
d2854d8d CT |
11933 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
11934 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 11935 | dwo_file->sections.macinfo = |
d2854d8d CT |
11936 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
11937 | sections.macinfo_offset, | |
11938 | sections.macinfo_size); | |
73869dc2 | 11939 | dwo_file->sections.macro = |
d2854d8d CT |
11940 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
11941 | sections.macro_offset, | |
11942 | sections.macro_size); | |
73869dc2 | 11943 | dwo_file->sections.str_offsets = |
d2854d8d CT |
11944 | create_dwp_v2_or_v5_section (per_objfile, |
11945 | &dwp_file->sections.str_offsets, | |
11946 | sections.str_offsets_offset, | |
11947 | sections.str_offsets_size); | |
73869dc2 DE |
11948 | /* The "str" section is global to the entire DWP file. */ |
11949 | dwo_file->sections.str = dwp_file->sections.str; | |
11950 | /* The info or types section is assigned below to dwo_unit, | |
11951 | there's no need to record it in dwo_file. | |
11952 | Also, we can't simply record type sections in dwo_file because | |
11953 | we record a pointer into the vector in dwo_unit. As we collect more | |
11954 | types we'll grow the vector and eventually have to reallocate space | |
11955 | for it, invalidating all copies of pointers into the previous | |
11956 | contents. */ | |
11957 | *dwo_file_slot = dwo_file; | |
11958 | } | |
11959 | else | |
11960 | { | |
6f738b01 SM |
11961 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
11962 | virtual_dwo_name.c_str ()); | |
11963 | ||
9a3c8263 | 11964 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11965 | } |
73869dc2 | 11966 | |
976ca316 | 11967 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
11968 | dwo_unit->dwo_file = dwo_file; |
11969 | dwo_unit->signature = signature; | |
8d749320 | 11970 | dwo_unit->section = |
976ca316 | 11971 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 11972 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 11973 | (per_objfile, |
d2854d8d CT |
11974 | is_debug_types |
11975 | ? &dwp_file->sections.types | |
11976 | : &dwp_file->sections.info, | |
11977 | sections.info_or_types_offset, | |
11978 | sections.info_or_types_size); | |
11979 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11980 | ||
11981 | return dwo_unit; | |
11982 | } | |
11983 | ||
11984 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11985 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11986 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11987 | This is for DWP version 5 files. */ | |
11988 | ||
11989 | static struct dwo_unit * | |
11990 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
11991 | struct dwp_file *dwp_file, | |
11992 | uint32_t unit_index, | |
11993 | const char *comp_dir, | |
11994 | ULONGEST signature, int is_debug_types) | |
11995 | { | |
11996 | const struct dwp_hash_table *dwp_htab | |
11997 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
11998 | bfd *dbfd = dwp_file->dbfd.get (); | |
11999 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12000 | struct dwo_file *dwo_file; | |
12001 | struct dwo_unit *dwo_unit; | |
12002 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12003 | void **dwo_file_slot; | |
12004 | ||
12005 | gdb_assert (dwp_file->version == 5); | |
12006 | ||
6f738b01 SM |
12007 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12008 | kind, pulongest (unit_index), hex_string (signature), | |
12009 | dwp_file->name); | |
d2854d8d CT |
12010 | |
12011 | /* Fetch the section offsets of this DWO unit. */ | |
12012 | ||
12013 | /* memset (§ions, 0, sizeof (sections)); */ | |
12014 | ||
12015 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12016 | { | |
12017 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12018 | dwp_htab->section_pool.v5.offsets |
12019 | + (((unit_index - 1) | |
12020 | * dwp_htab->nr_columns | |
12021 | + i) | |
12022 | * sizeof (uint32_t))); | |
d2854d8d | 12023 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12024 | dwp_htab->section_pool.v5.sizes |
12025 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12026 | + i) | |
12027 | * sizeof (uint32_t))); | |
d2854d8d CT |
12028 | |
12029 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12030 | { |
12031 | case DW_SECT_ABBREV_V5: | |
12032 | sections.abbrev_offset = offset; | |
12033 | sections.abbrev_size = size; | |
12034 | break; | |
12035 | case DW_SECT_INFO_V5: | |
12036 | sections.info_or_types_offset = offset; | |
12037 | sections.info_or_types_size = size; | |
12038 | break; | |
12039 | case DW_SECT_LINE_V5: | |
12040 | sections.line_offset = offset; | |
12041 | sections.line_size = size; | |
12042 | break; | |
12043 | case DW_SECT_LOCLISTS_V5: | |
12044 | sections.loclists_offset = offset; | |
12045 | sections.loclists_size = size; | |
12046 | break; | |
12047 | case DW_SECT_MACRO_V5: | |
12048 | sections.macro_offset = offset; | |
12049 | sections.macro_size = size; | |
12050 | break; | |
12051 | case DW_SECT_RNGLISTS_V5: | |
12052 | sections.rnglists_offset = offset; | |
12053 | sections.rnglists_size = size; | |
12054 | break; | |
12055 | case DW_SECT_STR_OFFSETS_V5: | |
12056 | sections.str_offsets_offset = offset; | |
12057 | sections.str_offsets_size = size; | |
12058 | break; | |
12059 | case DW_SECT_RESERVED_V5: | |
12060 | default: | |
12061 | break; | |
12062 | } | |
d2854d8d CT |
12063 | } |
12064 | ||
12065 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12066 | have dwo_unit "live" in that. At least for now. | |
12067 | ||
12068 | The DWP file can be made up of a random collection of CUs and TUs. | |
12069 | However, for each CU + set of TUs that came from the same original DWO | |
12070 | file, we can combine them back into a virtual DWO file to save space | |
12071 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12072 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12073 | ||
12074 | std::string virtual_dwo_name = | |
12075 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12076 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12077 | (long) (sections.line_size ? sections.line_offset : 0), | |
12078 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12079 | (long) (sections.str_offsets_size | |
12080 | ? sections.str_offsets_offset : 0), | |
12081 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12082 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12083 | /* Can we use an existing virtual DWO file? */ |
12084 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12085 | virtual_dwo_name.c_str (), |
12086 | comp_dir); | |
d2854d8d CT |
12087 | /* Create one if necessary. */ |
12088 | if (*dwo_file_slot == NULL) | |
12089 | { | |
6f738b01 SM |
12090 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12091 | virtual_dwo_name.c_str ()); | |
12092 | ||
d2854d8d CT |
12093 | dwo_file = new struct dwo_file; |
12094 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12095 | dwo_file->comp_dir = comp_dir; | |
12096 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12097 | create_dwp_v2_or_v5_section (per_objfile, |
12098 | &dwp_file->sections.abbrev, | |
12099 | sections.abbrev_offset, | |
12100 | sections.abbrev_size); | |
d2854d8d | 12101 | dwo_file->sections.line = |
dda83cd7 SM |
12102 | create_dwp_v2_or_v5_section (per_objfile, |
12103 | &dwp_file->sections.line, | |
12104 | sections.line_offset, sections.line_size); | |
d2854d8d | 12105 | dwo_file->sections.macro = |
dda83cd7 SM |
12106 | create_dwp_v2_or_v5_section (per_objfile, |
12107 | &dwp_file->sections.macro, | |
12108 | sections.macro_offset, | |
12109 | sections.macro_size); | |
d2854d8d | 12110 | dwo_file->sections.loclists = |
dda83cd7 SM |
12111 | create_dwp_v2_or_v5_section (per_objfile, |
12112 | &dwp_file->sections.loclists, | |
12113 | sections.loclists_offset, | |
12114 | sections.loclists_size); | |
d2854d8d | 12115 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12116 | create_dwp_v2_or_v5_section (per_objfile, |
12117 | &dwp_file->sections.rnglists, | |
12118 | sections.rnglists_offset, | |
12119 | sections.rnglists_size); | |
d2854d8d | 12120 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12121 | create_dwp_v2_or_v5_section (per_objfile, |
12122 | &dwp_file->sections.str_offsets, | |
12123 | sections.str_offsets_offset, | |
12124 | sections.str_offsets_size); | |
d2854d8d CT |
12125 | /* The "str" section is global to the entire DWP file. */ |
12126 | dwo_file->sections.str = dwp_file->sections.str; | |
12127 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12128 | there's no need to record it in dwo_file. |
12129 | Also, we can't simply record type sections in dwo_file because | |
12130 | we record a pointer into the vector in dwo_unit. As we collect more | |
12131 | types we'll grow the vector and eventually have to reallocate space | |
12132 | for it, invalidating all copies of pointers into the previous | |
12133 | contents. */ | |
d2854d8d CT |
12134 | *dwo_file_slot = dwo_file; |
12135 | } | |
12136 | else | |
12137 | { | |
6f738b01 SM |
12138 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12139 | virtual_dwo_name.c_str ()); | |
12140 | ||
d2854d8d CT |
12141 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12142 | } | |
12143 | ||
12144 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12145 | dwo_unit->dwo_file = dwo_file; | |
12146 | dwo_unit->signature = signature; | |
12147 | dwo_unit->section | |
12148 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12149 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12150 | &dwp_file->sections.info, |
12151 | sections.info_or_types_offset, | |
12152 | sections.info_or_types_size); | |
73869dc2 DE |
12153 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12154 | ||
12155 | return dwo_unit; | |
12156 | } | |
12157 | ||
57d63ce2 DE |
12158 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12159 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12160 | |
12161 | static struct dwo_unit * | |
976ca316 | 12162 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12163 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12164 | ULONGEST signature, int is_debug_types) |
80626a55 | 12165 | { |
57d63ce2 DE |
12166 | const struct dwp_hash_table *dwp_htab = |
12167 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12168 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12169 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12170 | uint32_t hash = signature & mask; |
12171 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12172 | unsigned int i; | |
12173 | void **slot; | |
870f88f7 | 12174 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12175 | |
12176 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12177 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12178 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12179 | ? dwp_file->loaded_tus.get () |
12180 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12181 | &find_dwo_cu, INSERT); |
80626a55 DE |
12182 | |
12183 | if (*slot != NULL) | |
9a3c8263 | 12184 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12185 | |
12186 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12187 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12188 | { |
12189 | ULONGEST signature_in_table; | |
12190 | ||
12191 | signature_in_table = | |
57d63ce2 | 12192 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12193 | if (signature_in_table == signature) |
12194 | { | |
57d63ce2 DE |
12195 | uint32_t unit_index = |
12196 | read_4_bytes (dbfd, | |
12197 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12198 | |
73869dc2 DE |
12199 | if (dwp_file->version == 1) |
12200 | { | |
976ca316 SM |
12201 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12202 | unit_index, comp_dir, | |
12203 | signature, is_debug_types); | |
73869dc2 | 12204 | } |
d2854d8d | 12205 | else if (dwp_file->version == 2) |
73869dc2 | 12206 | { |
976ca316 SM |
12207 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12208 | unit_index, comp_dir, | |
12209 | signature, is_debug_types); | |
73869dc2 | 12210 | } |
d2854d8d CT |
12211 | else /* version == 5 */ |
12212 | { | |
12213 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12214 | unit_index, comp_dir, | |
12215 | signature, is_debug_types); | |
12216 | } | |
9a3c8263 | 12217 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12218 | } |
12219 | if (signature_in_table == 0) | |
12220 | return NULL; | |
12221 | hash = (hash + hash2) & mask; | |
12222 | } | |
12223 | ||
12224 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12225 | " [in module %s]"), | |
12226 | dwp_file->name); | |
12227 | } | |
12228 | ||
ab5088bf | 12229 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12230 | Open the file specified by FILE_NAME and hand it off to BFD for |
12231 | preliminary analysis. Return a newly initialized bfd *, which | |
12232 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12233 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12234 | SEARCH_CWD is true if the current directory is to be searched. |
12235 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12236 | If successful, the file is added to the bfd include table of the |
12237 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12238 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12239 | NOTE: This function is derived from symfile_bfd_open. */ |
12240 | ||
192b62ce | 12241 | static gdb_bfd_ref_ptr |
976ca316 | 12242 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12243 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12244 | { |
24b9144d | 12245 | int desc; |
9c02c129 DE |
12246 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12247 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12248 | to debug_file_directory. */ | |
e0cc99a6 | 12249 | const char *search_path; |
9c02c129 DE |
12250 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12251 | ||
e0cc99a6 | 12252 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12253 | if (search_cwd) |
12254 | { | |
12255 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12256 | { |
12257 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12258 | debug_file_directory, | |
12259 | (char *) NULL)); | |
12260 | search_path = search_path_holder.get (); | |
12261 | } | |
6ac97d4c | 12262 | else |
e0cc99a6 | 12263 | search_path = "."; |
6ac97d4c | 12264 | } |
9c02c129 | 12265 | else |
e0cc99a6 | 12266 | search_path = debug_file_directory; |
3019eac3 | 12267 | |
56d467f4 CT |
12268 | /* Add the path for the executable binary to the list of search paths. */ |
12269 | std::string objfile_dir = ldirname (objfile_name (per_objfile->objfile)); | |
12270 | search_path_holder.reset (concat (objfile_dir.c_str (), | |
12271 | dirname_separator_string, | |
12272 | search_path, nullptr)); | |
12273 | search_path = search_path_holder.get (); | |
12274 | ||
24b9144d | 12275 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12276 | if (is_dwp) |
12277 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12278 | |
12279 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12280 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12281 | O_RDONLY | O_BINARY, &absolute_name); |
12282 | if (desc < 0) | |
12283 | return NULL; | |
12284 | ||
e0cc99a6 TT |
12285 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12286 | gnutarget, desc)); | |
9c02c129 DE |
12287 | if (sym_bfd == NULL) |
12288 | return NULL; | |
192b62ce | 12289 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12290 | |
192b62ce TT |
12291 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12292 | return NULL; | |
3019eac3 | 12293 | |
13aaf454 DE |
12294 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12295 | This is important because things like demangled_names_hash lives in the | |
12296 | objfile's per_bfd space and may have references to things like symbol | |
12297 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12298 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12299 | |
3019eac3 DE |
12300 | return sym_bfd; |
12301 | } | |
12302 | ||
ab5088bf | 12303 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12304 | COMP_DIR is the DW_AT_comp_dir attribute. |
12305 | The result is the bfd handle of the file. | |
12306 | If there is a problem finding or opening the file, return NULL. | |
12307 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12308 | same as symfile_bfd_open. */ | |
12309 | ||
192b62ce | 12310 | static gdb_bfd_ref_ptr |
976ca316 | 12311 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12312 | const char *file_name, const char *comp_dir) |
3019eac3 | 12313 | { |
80626a55 | 12314 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12315 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12316 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12317 | |
12318 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12319 | ||
12320 | if (comp_dir != NULL) | |
12321 | { | |
43816ebc TT |
12322 | gdb::unique_xmalloc_ptr<char> path_to_try |
12323 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12324 | |
12325 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12326 | search path, which seems useful. */ | |
976ca316 | 12327 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12328 | 0 /*is_dwp*/, |
192b62ce | 12329 | 1 /*search_cwd*/)); |
3019eac3 DE |
12330 | if (abfd != NULL) |
12331 | return abfd; | |
12332 | } | |
12333 | ||
12334 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12335 | is a list of paths. */ | |
12336 | ||
12337 | if (*debug_file_directory == '\0') | |
12338 | return NULL; | |
12339 | ||
976ca316 | 12340 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12341 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12342 | } |
12343 | ||
80626a55 DE |
12344 | /* This function is mapped across the sections and remembers the offset and |
12345 | size of each of the DWO debugging sections we are interested in. */ | |
12346 | ||
12347 | static void | |
5bb6e9dd TT |
12348 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12349 | dwo_sections *dwo_sections) | |
80626a55 | 12350 | { |
80626a55 DE |
12351 | const struct dwop_section_names *names = &dwop_section_names; |
12352 | ||
fbedd546 | 12353 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 | 12354 | { |
049412e3 | 12355 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12356 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12357 | } |
fbedd546 | 12358 | else if (names->info_dwo.matches (sectp->name)) |
80626a55 | 12359 | { |
049412e3 | 12360 | dwo_sections->info.s.section = sectp; |
fd361982 | 12361 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 | 12362 | } |
fbedd546 | 12363 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 | 12364 | { |
049412e3 | 12365 | dwo_sections->line.s.section = sectp; |
fd361982 | 12366 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 | 12367 | } |
fbedd546 | 12368 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 | 12369 | { |
049412e3 | 12370 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12371 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12372 | } |
fbedd546 | 12373 | else if (names->loclists_dwo.matches (sectp->name)) |
41144253 | 12374 | { |
12375 | dwo_sections->loclists.s.section = sectp; | |
12376 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12377 | } | |
fbedd546 | 12378 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 | 12379 | { |
049412e3 | 12380 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12381 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12382 | } |
fbedd546 | 12383 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 | 12384 | { |
049412e3 | 12385 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12386 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12387 | } |
fbedd546 | 12388 | else if (names->rnglists_dwo.matches (sectp->name)) |
d0ce17d8 CT |
12389 | { |
12390 | dwo_sections->rnglists.s.section = sectp; | |
12391 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12392 | } | |
fbedd546 | 12393 | else if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12394 | { |
049412e3 | 12395 | dwo_sections->str.s.section = sectp; |
fd361982 | 12396 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 | 12397 | } |
fbedd546 | 12398 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 | 12399 | { |
049412e3 | 12400 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12401 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 | 12402 | } |
fbedd546 | 12403 | else if (names->types_dwo.matches (sectp->name)) |
80626a55 DE |
12404 | { |
12405 | struct dwarf2_section_info type_section; | |
12406 | ||
12407 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12408 | type_section.s.section = sectp; |
fd361982 | 12409 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12410 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12411 | } |
12412 | } | |
12413 | ||
ab5088bf | 12414 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12415 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12416 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12417 | |
12418 | static struct dwo_file * | |
4ab09049 SM |
12419 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12420 | const char *comp_dir) | |
3019eac3 | 12421 | { |
976ca316 | 12422 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12423 | |
976ca316 | 12424 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12425 | if (dbfd == NULL) |
12426 | { | |
6f738b01 SM |
12427 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12428 | ||
80626a55 DE |
12429 | return NULL; |
12430 | } | |
263db9a1 | 12431 | |
51ac9db5 | 12432 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12433 | dwo_file->dwo_name = dwo_name; |
12434 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12435 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12436 | |
5bb6e9dd TT |
12437 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12438 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12439 | &dwo_file->sections); | |
3019eac3 | 12440 | |
976ca316 SM |
12441 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12442 | dwo_file->cus); | |
3019eac3 | 12443 | |
d2854d8d CT |
12444 | if (cu->per_cu->dwarf_version < 5) |
12445 | { | |
12446 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12447 | dwo_file->sections.types, dwo_file->tus); | |
12448 | } | |
12449 | else | |
12450 | { | |
12451 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12452 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12453 | rcuh_kind::COMPILE); |
d2854d8d | 12454 | } |
3019eac3 | 12455 | |
6f738b01 | 12456 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12457 | |
263db9a1 | 12458 | return dwo_file.release (); |
3019eac3 DE |
12459 | } |
12460 | ||
80626a55 | 12461 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12462 | size of each of the DWP debugging sections common to version 1 and 2 that |
12463 | we are interested in. */ | |
3019eac3 | 12464 | |
80626a55 | 12465 | static void |
73869dc2 | 12466 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12467 | dwp_file *dwp_file) |
3019eac3 | 12468 | { |
80626a55 DE |
12469 | const struct dwop_section_names *names = &dwop_section_names; |
12470 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12471 | |
80626a55 | 12472 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12473 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12474 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12475 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12476 | |
80626a55 | 12477 | /* Look for specific sections that we need. */ |
fbedd546 | 12478 | if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12479 | { |
049412e3 | 12480 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12481 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 | 12482 | } |
fbedd546 | 12483 | else if (names->cu_index.matches (sectp->name)) |
80626a55 | 12484 | { |
049412e3 | 12485 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12486 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 | 12487 | } |
fbedd546 | 12488 | else if (names->tu_index.matches (sectp->name)) |
80626a55 | 12489 | { |
049412e3 | 12490 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12491 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12492 | } |
12493 | } | |
3019eac3 | 12494 | |
73869dc2 DE |
12495 | /* This function is mapped across the sections and remembers the offset and |
12496 | size of each of the DWP version 2 debugging sections that we are interested | |
12497 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12498 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12499 | |
12500 | static void | |
12501 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12502 | { | |
9a3c8263 | 12503 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12504 | const struct dwop_section_names *names = &dwop_section_names; |
12505 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12506 | ||
12507 | /* Record the ELF section number for later lookup: this is what the | |
12508 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12509 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12510 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12511 | ||
12512 | /* Look for specific sections that we need. */ | |
fbedd546 | 12513 | if (names->abbrev_dwo.matches (sectp->name)) |
73869dc2 | 12514 | { |
049412e3 | 12515 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12516 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 | 12517 | } |
fbedd546 | 12518 | else if (names->info_dwo.matches (sectp->name)) |
73869dc2 | 12519 | { |
049412e3 | 12520 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12521 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 | 12522 | } |
fbedd546 | 12523 | else if (names->line_dwo.matches (sectp->name)) |
73869dc2 | 12524 | { |
049412e3 | 12525 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12526 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 | 12527 | } |
fbedd546 | 12528 | else if (names->loc_dwo.matches (sectp->name)) |
73869dc2 | 12529 | { |
049412e3 | 12530 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12531 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 | 12532 | } |
fbedd546 | 12533 | else if (names->macinfo_dwo.matches (sectp->name)) |
73869dc2 | 12534 | { |
049412e3 | 12535 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12536 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 | 12537 | } |
fbedd546 | 12538 | else if (names->macro_dwo.matches (sectp->name)) |
73869dc2 | 12539 | { |
049412e3 | 12540 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12541 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 | 12542 | } |
fbedd546 | 12543 | else if (names->str_offsets_dwo.matches (sectp->name)) |
73869dc2 | 12544 | { |
049412e3 | 12545 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12546 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 | 12547 | } |
fbedd546 | 12548 | else if (names->types_dwo.matches (sectp->name)) |
73869dc2 | 12549 | { |
049412e3 | 12550 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12551 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12552 | } |
12553 | } | |
12554 | ||
d2854d8d CT |
12555 | /* This function is mapped across the sections and remembers the offset and |
12556 | size of each of the DWP version 5 debugging sections that we are interested | |
12557 | in. This is split into a separate function because we don't know if we | |
12558 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12559 | ||
12560 | static void | |
12561 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12562 | { | |
12563 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12564 | const struct dwop_section_names *names = &dwop_section_names; | |
12565 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12566 | ||
12567 | /* Record the ELF section number for later lookup: this is what the | |
12568 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12569 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12570 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12571 | ||
12572 | /* Look for specific sections that we need. */ | |
fbedd546 | 12573 | if (names->abbrev_dwo.matches (sectp->name)) |
d2854d8d CT |
12574 | { |
12575 | dwp_file->sections.abbrev.s.section = sectp; | |
12576 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12577 | } | |
fbedd546 | 12578 | else if (names->info_dwo.matches (sectp->name)) |
d2854d8d CT |
12579 | { |
12580 | dwp_file->sections.info.s.section = sectp; | |
12581 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12582 | } | |
fbedd546 | 12583 | else if (names->line_dwo.matches (sectp->name)) |
d2854d8d CT |
12584 | { |
12585 | dwp_file->sections.line.s.section = sectp; | |
12586 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12587 | } | |
fbedd546 | 12588 | else if (names->loclists_dwo.matches (sectp->name)) |
d2854d8d CT |
12589 | { |
12590 | dwp_file->sections.loclists.s.section = sectp; | |
12591 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12592 | } | |
fbedd546 | 12593 | else if (names->macro_dwo.matches (sectp->name)) |
d2854d8d CT |
12594 | { |
12595 | dwp_file->sections.macro.s.section = sectp; | |
12596 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12597 | } | |
fbedd546 | 12598 | else if (names->rnglists_dwo.matches (sectp->name)) |
d2854d8d CT |
12599 | { |
12600 | dwp_file->sections.rnglists.s.section = sectp; | |
12601 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12602 | } | |
fbedd546 | 12603 | else if (names->str_offsets_dwo.matches (sectp->name)) |
d2854d8d CT |
12604 | { |
12605 | dwp_file->sections.str_offsets.s.section = sectp; | |
12606 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
12607 | } | |
12608 | } | |
12609 | ||
80626a55 | 12610 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12611 | |
80626a55 DE |
12612 | static hashval_t |
12613 | hash_dwp_loaded_cutus (const void *item) | |
12614 | { | |
9a3c8263 | 12615 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12616 | |
80626a55 DE |
12617 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12618 | return dwo_unit->signature; | |
3019eac3 DE |
12619 | } |
12620 | ||
80626a55 | 12621 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12622 | |
80626a55 DE |
12623 | static int |
12624 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12625 | { |
9a3c8263 SM |
12626 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12627 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12628 | |
80626a55 DE |
12629 | return dua->signature == dub->signature; |
12630 | } | |
3019eac3 | 12631 | |
80626a55 | 12632 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12633 | |
48b490f2 | 12634 | static htab_up |
298e9637 | 12635 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12636 | { |
48b490f2 TT |
12637 | return htab_up (htab_create_alloc (3, |
12638 | hash_dwp_loaded_cutus, | |
12639 | eq_dwp_loaded_cutus, | |
12640 | NULL, xcalloc, xfree)); | |
80626a55 | 12641 | } |
3019eac3 | 12642 | |
ab5088bf DE |
12643 | /* Try to open DWP file FILE_NAME. |
12644 | The result is the bfd handle of the file. | |
12645 | If there is a problem finding or opening the file, return NULL. | |
12646 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12647 | same as symfile_bfd_open. */ | |
12648 | ||
192b62ce | 12649 | static gdb_bfd_ref_ptr |
976ca316 | 12650 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 12651 | { |
976ca316 | 12652 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12653 | 1 /*is_dwp*/, |
192b62ce | 12654 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12655 | if (abfd != NULL) |
12656 | return abfd; | |
12657 | ||
12658 | /* Work around upstream bug 15652. | |
12659 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12660 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12661 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12662 | of the executable's path may have discarded the needed info. | |
12663 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12664 | .gnu_debuglink, but that doesn't exist yet.] | |
12665 | Strip the directory from FILE_NAME and search again. */ | |
12666 | if (*debug_file_directory != '\0') | |
12667 | { | |
12668 | /* Don't implicitly search the current directory here. | |
12669 | If the user wants to search "." to handle this case, | |
12670 | it must be added to debug-file-directory. */ | |
976ca316 SM |
12671 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
12672 | 1 /*is_dwp*/, | |
6ac97d4c DE |
12673 | 0 /*search_cwd*/); |
12674 | } | |
12675 | ||
12676 | return NULL; | |
ab5088bf DE |
12677 | } |
12678 | ||
80626a55 DE |
12679 | /* Initialize the use of the DWP file for the current objfile. |
12680 | By convention the name of the DWP file is ${objfile}.dwp. | |
12681 | The result is NULL if it can't be found. */ | |
a766d390 | 12682 | |
400174b1 | 12683 | static std::unique_ptr<struct dwp_file> |
976ca316 | 12684 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 12685 | { |
976ca316 | 12686 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 12687 | |
82bf32bc JK |
12688 | /* Try to find first .dwp for the binary file before any symbolic links |
12689 | resolving. */ | |
6c447423 DE |
12690 | |
12691 | /* If the objfile is a debug file, find the name of the real binary | |
12692 | file and get the name of dwp file from there. */ | |
d721ba37 | 12693 | std::string dwp_name; |
6c447423 DE |
12694 | if (objfile->separate_debug_objfile_backlink != NULL) |
12695 | { | |
12696 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12697 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12698 | |
d721ba37 | 12699 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12700 | } |
12701 | else | |
d721ba37 PA |
12702 | dwp_name = objfile->original_name; |
12703 | ||
12704 | dwp_name += ".dwp"; | |
80626a55 | 12705 | |
976ca316 | 12706 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12707 | if (dbfd == NULL |
12708 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12709 | { | |
12710 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12711 | dwp_name = objfile_name (objfile); |
12712 | dwp_name += ".dwp"; | |
976ca316 | 12713 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12714 | } |
12715 | ||
80626a55 DE |
12716 | if (dbfd == NULL) |
12717 | { | |
6f738b01 SM |
12718 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
12719 | ||
400174b1 | 12720 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12721 | } |
400174b1 TT |
12722 | |
12723 | const char *name = bfd_get_filename (dbfd.get ()); | |
12724 | std::unique_ptr<struct dwp_file> dwp_file | |
12725 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12726 | |
0a0f4c01 | 12727 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12728 | dwp_file->elf_sections = |
976ca316 | 12729 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
12730 | dwp_file->num_sections, asection *); |
12731 | ||
5bb6e9dd TT |
12732 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12733 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
12734 | dwp_file.get ()); | |
80626a55 | 12735 | |
976ca316 | 12736 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 12737 | |
976ca316 | 12738 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 12739 | |
73869dc2 | 12740 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12741 | if (dwp_file->cus && dwp_file->tus |
12742 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12743 | { |
12744 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12745 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12746 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12747 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12748 | " TU version %s [in DWP file %s]"), | |
12749 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12750 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12751 | } |
08302ed2 DE |
12752 | |
12753 | if (dwp_file->cus) | |
12754 | dwp_file->version = dwp_file->cus->version; | |
12755 | else if (dwp_file->tus) | |
12756 | dwp_file->version = dwp_file->tus->version; | |
12757 | else | |
12758 | dwp_file->version = 2; | |
73869dc2 | 12759 | |
5bb6e9dd TT |
12760 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
12761 | { | |
12762 | if (dwp_file->version == 2) | |
12763 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
12764 | dwp_file.get ()); | |
12765 | else | |
12766 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
12767 | dwp_file.get ()); | |
12768 | } | |
73869dc2 | 12769 | |
298e9637 SM |
12770 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12771 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12772 | |
6f738b01 SM |
12773 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
12774 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
12775 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12776 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12777 | |
12778 | return dwp_file; | |
3019eac3 | 12779 | } |
c906108c | 12780 | |
ab5088bf DE |
12781 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12782 | ||
12783 | static struct dwp_file * | |
976ca316 | 12784 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 12785 | { |
976ca316 | 12786 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12787 | { |
976ca316 SM |
12788 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
12789 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 12790 | } |
976ca316 | 12791 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12792 | } |
12793 | ||
80626a55 DE |
12794 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12795 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12796 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12797 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12798 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12799 | ||
12800 | This is called, for example, when wanting to read a variable with a | |
12801 | complex location. Therefore we don't want to do file i/o for every call. | |
12802 | Therefore we don't want to look for a DWO file on every call. | |
12803 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12804 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12805 | for a DWO file. | |
12806 | ||
1c658ad5 | 12807 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12808 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12809 | |
3019eac3 | 12810 | static struct dwo_unit * |
4ab09049 | 12811 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12812 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12813 | { |
976ca316 SM |
12814 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
12815 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
12816 | const char *kind = is_debug_types ? "TU" : "CU"; |
12817 | void **dwo_file_slot; | |
3019eac3 | 12818 | struct dwo_file *dwo_file; |
80626a55 | 12819 | struct dwp_file *dwp_file; |
cb1df416 | 12820 | |
6a506a2d DE |
12821 | /* First see if there's a DWP file. |
12822 | If we have a DWP file but didn't find the DWO inside it, don't | |
12823 | look for the original DWO file. It makes gdb behave differently | |
12824 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12825 | |
976ca316 | 12826 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 12827 | if (dwp_file != NULL) |
cf2c3c16 | 12828 | { |
80626a55 DE |
12829 | const struct dwp_hash_table *dwp_htab = |
12830 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12831 | ||
12832 | if (dwp_htab != NULL) | |
12833 | { | |
12834 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
12835 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
12836 | is_debug_types); | |
80626a55 DE |
12837 | |
12838 | if (dwo_cutu != NULL) | |
12839 | { | |
6f738b01 SM |
12840 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
12841 | kind, hex_string (signature), | |
12842 | host_address_to_string (dwo_cutu)); | |
12843 | ||
80626a55 DE |
12844 | return dwo_cutu; |
12845 | } | |
12846 | } | |
12847 | } | |
6a506a2d | 12848 | else |
80626a55 | 12849 | { |
6a506a2d | 12850 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12851 | |
976ca316 | 12852 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 12853 | if (*dwo_file_slot == NULL) |
80626a55 | 12854 | { |
6a506a2d | 12855 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12856 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12857 | } |
6a506a2d | 12858 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12859 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12860 | |
6a506a2d | 12861 | if (dwo_file != NULL) |
19c3d4c9 | 12862 | { |
6a506a2d DE |
12863 | struct dwo_unit *dwo_cutu = NULL; |
12864 | ||
12865 | if (is_debug_types && dwo_file->tus) | |
12866 | { | |
12867 | struct dwo_unit find_dwo_cutu; | |
12868 | ||
12869 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12870 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12871 | dwo_cutu |
b0b6a987 TT |
12872 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12873 | &find_dwo_cutu); | |
6a506a2d | 12874 | } |
33c5cd75 | 12875 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12876 | { |
33c5cd75 DB |
12877 | struct dwo_unit find_dwo_cutu; |
12878 | ||
12879 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12880 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12881 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12882 | &find_dwo_cutu); |
6a506a2d DE |
12883 | } |
12884 | ||
12885 | if (dwo_cutu != NULL) | |
12886 | { | |
6f738b01 SM |
12887 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
12888 | kind, dwo_name, hex_string (signature), | |
12889 | host_address_to_string (dwo_cutu)); | |
12890 | ||
6a506a2d | 12891 | return dwo_cutu; |
80626a55 DE |
12892 | } |
12893 | } | |
2e276125 | 12894 | } |
9cdd5dbd | 12895 | |
80626a55 DE |
12896 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12897 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12898 | correctly to find the file. */ | |
12899 | ||
6f738b01 SM |
12900 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
12901 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 12902 | |
6656a72d DE |
12903 | /* This is a warning and not a complaint because it can be caused by |
12904 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12905 | { |
12906 | /* Print the name of the DWP file if we looked there, helps the user | |
12907 | better diagnose the problem. */ | |
791afaa2 | 12908 | std::string dwp_text; |
43942612 DE |
12909 | |
12910 | if (dwp_file != NULL) | |
791afaa2 TT |
12911 | dwp_text = string_printf (" [in DWP file %s]", |
12912 | lbasename (dwp_file->name)); | |
43942612 | 12913 | |
9d8780f0 | 12914 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12915 | " [in module %s]"), |
4ab09049 SM |
12916 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12917 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12918 | } |
3019eac3 | 12919 | return NULL; |
5fb290d7 DJ |
12920 | } |
12921 | ||
80626a55 DE |
12922 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12923 | See lookup_dwo_cutu_unit for details. */ | |
12924 | ||
12925 | static struct dwo_unit * | |
4ab09049 | 12926 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12927 | ULONGEST signature) |
12928 | { | |
4ab09049 SM |
12929 | gdb_assert (!cu->per_cu->is_debug_types); |
12930 | ||
12931 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12932 | } |
12933 | ||
12934 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12935 | See lookup_dwo_cutu_unit for details. */ | |
12936 | ||
12937 | static struct dwo_unit * | |
4ab09049 | 12938 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12939 | { |
4ab09049 SM |
12940 | gdb_assert (cu->per_cu->is_debug_types); |
12941 | ||
12942 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12943 | ||
12944 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12945 | } |
12946 | ||
89e63ee4 DE |
12947 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12948 | ||
12949 | static int | |
12950 | queue_and_load_dwo_tu (void **slot, void *info) | |
12951 | { | |
12952 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12953 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12954 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12955 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12956 | |
12957 | if (sig_type != NULL) | |
12958 | { | |
89e63ee4 DE |
12959 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's |
12960 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12961 | while processing PER_CU. */ | |
0d305d5c TT |
12962 | if (maybe_queue_comp_unit (NULL, sig_type, cu->per_objfile, |
12963 | cu->language)) | |
12964 | load_full_type_unit (sig_type, cu->per_objfile); | |
12965 | cu->per_cu->imported_symtabs_push (sig_type); | |
89e63ee4 DE |
12966 | } |
12967 | ||
12968 | return 1; | |
12969 | } | |
12970 | ||
1b555f17 | 12971 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12972 | The DWO may have the only definition of the type, though it may not be |
12973 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12974 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12975 | ||
12976 | static void | |
1b555f17 | 12977 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12978 | { |
12979 | struct dwo_unit *dwo_unit; | |
12980 | struct dwo_file *dwo_file; | |
12981 | ||
1b555f17 SM |
12982 | gdb_assert (cu != nullptr); |
12983 | gdb_assert (!cu->per_cu->is_debug_types); | |
12984 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12985 | |
1b555f17 | 12986 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12987 | gdb_assert (dwo_unit != NULL); |
12988 | ||
12989 | dwo_file = dwo_unit->dwo_file; | |
12990 | if (dwo_file->tus != NULL) | |
1b555f17 | 12991 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
12992 | } |
12993 | ||
3019eac3 | 12994 | /* Read in various DIEs. */ |
348e048f | 12995 | |
d389af10 | 12996 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12997 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12998 | already referenced by DW_AT_abstract_origin from the children of the | |
12999 | current DIE. */ | |
d389af10 JK |
13000 | |
13001 | static void | |
13002 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13003 | { | |
13004 | struct die_info *child_die; | |
791afaa2 | 13005 | sect_offset *offsetp; |
d389af10 JK |
13006 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13007 | struct die_info *origin_die; | |
13008 | /* Iterator of the ORIGIN_DIE children. */ | |
13009 | struct die_info *origin_child_die; | |
d389af10 | 13010 | struct attribute *attr; |
cd02d79d PA |
13011 | struct dwarf2_cu *origin_cu; |
13012 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13013 | |
13014 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13015 | if (!attr) | |
13016 | return; | |
13017 | ||
cd02d79d PA |
13018 | /* Note that following die references may follow to a die in a |
13019 | different cu. */ | |
13020 | ||
13021 | origin_cu = cu; | |
13022 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13023 | ||
13024 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13025 | symbols in. */ | |
13026 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13027 | origin_cu->list_in_scope = cu->list_in_scope; | |
13028 | ||
edb3359d DJ |
13029 | if (die->tag != origin_die->tag |
13030 | && !(die->tag == DW_TAG_inlined_subroutine | |
13031 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13032 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13033 | sect_offset_str (die->sect_off), |
13034 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13035 | |
34dc0f95 TBA |
13036 | /* Find if the concrete and abstract trees are structurally the |
13037 | same. This is a shallow traversal and it is not bullet-proof; | |
13038 | the compiler can trick the debugger into believing that the trees | |
13039 | are isomorphic, whereas they actually are not. However, the | |
13040 | likelyhood of this happening is pretty low, and a full-fledged | |
13041 | check would be an overkill. */ | |
13042 | bool are_isomorphic = true; | |
13043 | die_info *concrete_child = die->child; | |
13044 | die_info *abstract_child = origin_die->child; | |
13045 | while (concrete_child != nullptr || abstract_child != nullptr) | |
13046 | { | |
13047 | if (concrete_child == nullptr | |
13048 | || abstract_child == nullptr | |
13049 | || concrete_child->tag != abstract_child->tag) | |
13050 | { | |
13051 | are_isomorphic = false; | |
13052 | break; | |
13053 | } | |
13054 | ||
13055 | concrete_child = concrete_child->sibling; | |
13056 | abstract_child = abstract_child->sibling; | |
13057 | } | |
13058 | ||
13059 | /* Walk the origin's children in parallel to the concrete children. | |
13060 | This helps match an origin child in case the debug info misses | |
13061 | DW_AT_abstract_origin attributes. Keep in mind that the abstract | |
13062 | origin tree may not have the same tree structure as the concrete | |
13063 | DIE, though. */ | |
13064 | die_info *corresponding_abstract_child | |
13065 | = are_isomorphic ? origin_die->child : nullptr; | |
13066 | ||
791afaa2 | 13067 | std::vector<sect_offset> offsets; |
d389af10 | 13068 | |
3ea89b92 PMR |
13069 | for (child_die = die->child; |
13070 | child_die && child_die->tag; | |
436c571c | 13071 | child_die = child_die->sibling) |
3ea89b92 PMR |
13072 | { |
13073 | struct die_info *child_origin_die; | |
13074 | struct dwarf2_cu *child_origin_cu; | |
13075 | ||
13076 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13077 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13078 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13079 | present in the abstract instance but not referenced in the concrete | |
13080 | one. */ | |
216f72a1 | 13081 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13082 | || child_die->tag == DW_TAG_GNU_call_site) |
34dc0f95 TBA |
13083 | { |
13084 | if (are_isomorphic) | |
13085 | corresponding_abstract_child | |
13086 | = corresponding_abstract_child->sibling; | |
13087 | continue; | |
13088 | } | |
3ea89b92 | 13089 | |
c38f313d DJ |
13090 | /* For each CHILD_DIE, find the corresponding child of |
13091 | ORIGIN_DIE. If there is more than one layer of | |
13092 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13093 | but GCC versions at least through 4.4 generate this (GCC PR | |
13094 | 40573). */ | |
3ea89b92 PMR |
13095 | child_origin_die = child_die; |
13096 | child_origin_cu = cu; | |
c38f313d DJ |
13097 | while (1) |
13098 | { | |
cd02d79d PA |
13099 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13100 | child_origin_cu); | |
c38f313d DJ |
13101 | if (attr == NULL) |
13102 | break; | |
cd02d79d PA |
13103 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13104 | &child_origin_cu); | |
c38f313d DJ |
13105 | } |
13106 | ||
34dc0f95 TBA |
13107 | /* If missing DW_AT_abstract_origin, try the corresponding child |
13108 | of the origin. Clang emits such lexical scopes. */ | |
13109 | if (child_origin_die == child_die | |
13110 | && dwarf2_attr (child_die, DW_AT_abstract_origin, cu) == nullptr | |
13111 | && are_isomorphic | |
13112 | && child_die->tag == DW_TAG_lexical_block) | |
13113 | child_origin_die = corresponding_abstract_child; | |
13114 | ||
d389af10 JK |
13115 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13116 | counterpart may exist. */ | |
c38f313d | 13117 | if (child_origin_die != child_die) |
d389af10 | 13118 | { |
edb3359d DJ |
13119 | if (child_die->tag != child_origin_die->tag |
13120 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13121 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13122 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13123 | "different tags"), |
9d8780f0 SM |
13124 | sect_offset_str (child_die->sect_off), |
13125 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13126 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13127 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13128 | "different parents"), |
9d8780f0 SM |
13129 | sect_offset_str (child_die->sect_off), |
13130 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13131 | else |
791afaa2 | 13132 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13133 | } |
34dc0f95 TBA |
13134 | |
13135 | if (are_isomorphic) | |
13136 | corresponding_abstract_child = corresponding_abstract_child->sibling; | |
d389af10 | 13137 | } |
791afaa2 TT |
13138 | std::sort (offsets.begin (), offsets.end ()); |
13139 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13140 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13141 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13142 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13143 | "to DIE %s as their abstract origin"), |
13144 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13145 | |
791afaa2 | 13146 | offsetp = offsets.data (); |
d389af10 JK |
13147 | origin_child_die = origin_die->child; |
13148 | while (origin_child_die && origin_child_die->tag) | |
13149 | { | |
13150 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13151 | while (offsetp < offsets_end |
9c541725 | 13152 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13153 | offsetp++; |
b64f50a1 | 13154 | if (offsetp >= offsets_end |
9c541725 | 13155 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13156 | { |
adde2bff DE |
13157 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13158 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13159 | This can happen with mutually referenced abstract_origins. | |
13160 | PR 16581. */ | |
13161 | if (!origin_child_die->in_process) | |
13162 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13163 | } |
436c571c | 13164 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13165 | } |
cd02d79d | 13166 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13167 | |
13168 | if (cu != origin_cu) | |
13169 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13170 | } |
13171 | ||
c906108c | 13172 | static void |
e7c27a73 | 13173 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13174 | { |
5e22e966 | 13175 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13176 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13177 | struct context_stack *newobj; |
c906108c SS |
13178 | CORE_ADDR lowpc; |
13179 | CORE_ADDR highpc; | |
13180 | struct die_info *child_die; | |
edb3359d | 13181 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13182 | const char *name; |
e142c38c | 13183 | CORE_ADDR baseaddr; |
801e3a5b | 13184 | struct block *block; |
edb3359d | 13185 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13186 | std::vector<struct symbol *> template_args; |
34eaf542 | 13187 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13188 | |
13189 | if (inlined_func) | |
13190 | { | |
13191 | /* If we do not have call site information, we can't show the | |
13192 | caller of this inlined function. That's too confusing, so | |
13193 | only use the scope for local variables. */ | |
13194 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13195 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13196 | if (call_line == NULL || call_file == NULL) | |
13197 | { | |
13198 | read_lexical_block_scope (die, cu); | |
13199 | return; | |
13200 | } | |
13201 | } | |
c906108c | 13202 | |
b3b3bada | 13203 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13204 | |
94af9270 | 13205 | name = dwarf2_name (die, cu); |
c906108c | 13206 | |
e8d05480 JB |
13207 | /* Ignore functions with missing or empty names. These are actually |
13208 | illegal according to the DWARF standard. */ | |
13209 | if (name == NULL) | |
13210 | { | |
b98664d3 | 13211 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13212 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13213 | return; |
13214 | } | |
13215 | ||
13216 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13217 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13218 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13219 | { |
ae4d0c03 | 13220 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13221 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13222 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13223 | "for subprogram DIE at %s"), |
13224 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13225 | return; |
13226 | } | |
c906108c | 13227 | |
3e29f34a MR |
13228 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13229 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13230 | |
34eaf542 TT |
13231 | /* If we have any template arguments, then we must allocate a |
13232 | different sort of symbol. */ | |
436c571c | 13233 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13234 | { |
13235 | if (child_die->tag == DW_TAG_template_type_param | |
13236 | || child_die->tag == DW_TAG_template_value_param) | |
13237 | { | |
8c14c3a3 | 13238 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13239 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13240 | break; |
13241 | } | |
13242 | } | |
13243 | ||
702cf3f5 | 13244 | gdb_assert (cu->get_builder () != nullptr); |
c24bdb02 | 13245 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13246 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13247 | (struct symbol *) templ_func); | |
4c2df51b | 13248 | |
81873cc8 | 13249 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13250 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13251 | cu->language); |
13252 | ||
4cecd739 DJ |
13253 | /* If there is a location expression for DW_AT_frame_base, record |
13254 | it. */ | |
e142c38c | 13255 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13256 | if (attr != nullptr) |
fe978cb0 | 13257 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13258 | |
63e43d3a PMR |
13259 | /* If there is a location for the static link, record it. */ |
13260 | newobj->static_link = NULL; | |
13261 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13262 | if (attr != nullptr) |
63e43d3a | 13263 | { |
224c3ddb SM |
13264 | newobj->static_link |
13265 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13266 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13267 | cu->addr_type ()); |
63e43d3a PMR |
13268 | } |
13269 | ||
c24bdb02 | 13270 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13271 | |
639d11d3 | 13272 | if (die->child != NULL) |
c906108c | 13273 | { |
639d11d3 | 13274 | child_die = die->child; |
c906108c SS |
13275 | while (child_die && child_die->tag) |
13276 | { | |
34eaf542 TT |
13277 | if (child_die->tag == DW_TAG_template_type_param |
13278 | || child_die->tag == DW_TAG_template_value_param) | |
13279 | { | |
13280 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13281 | ||
f1078f66 | 13282 | if (arg != NULL) |
2f4732b0 | 13283 | template_args.push_back (arg); |
34eaf542 TT |
13284 | } |
13285 | else | |
13286 | process_die (child_die, cu); | |
436c571c | 13287 | child_die = child_die->sibling; |
c906108c SS |
13288 | } |
13289 | } | |
13290 | ||
d389af10 JK |
13291 | inherit_abstract_dies (die, cu); |
13292 | ||
4a811a97 UW |
13293 | /* If we have a DW_AT_specification, we might need to import using |
13294 | directives from the context of the specification DIE. See the | |
13295 | comment in determine_prefix. */ | |
13296 | if (cu->language == language_cplus | |
13297 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13298 | { | |
13299 | struct dwarf2_cu *spec_cu = cu; | |
13300 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13301 | ||
13302 | while (spec_die) | |
13303 | { | |
13304 | child_die = spec_die->child; | |
13305 | while (child_die && child_die->tag) | |
13306 | { | |
13307 | if (child_die->tag == DW_TAG_imported_module) | |
13308 | process_die (child_die, spec_cu); | |
436c571c | 13309 | child_die = child_die->sibling; |
4a811a97 UW |
13310 | } |
13311 | ||
13312 | /* In some cases, GCC generates specification DIEs that | |
13313 | themselves contain DW_AT_specification attributes. */ | |
13314 | spec_die = die_specification (spec_die, &spec_cu); | |
13315 | } | |
13316 | } | |
13317 | ||
c24bdb02 | 13318 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13319 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13320 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13321 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13322 | |
df8a16a1 | 13323 | /* For C++, set the block's scope. */ |
45280282 IB |
13324 | if ((cu->language == language_cplus |
13325 | || cu->language == language_fortran | |
c44af4eb TT |
13326 | || cu->language == language_d |
13327 | || cu->language == language_rust) | |
4d4ec4e5 | 13328 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13329 | block_set_scope (block, determine_prefix (die, cu), |
13330 | &objfile->objfile_obstack); | |
df8a16a1 | 13331 | |
801e3a5b JB |
13332 | /* If we have address ranges, record them. */ |
13333 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13334 | |
a60f3166 | 13335 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13336 | |
34eaf542 | 13337 | /* Attach template arguments to function. */ |
2f4732b0 | 13338 | if (!template_args.empty ()) |
34eaf542 TT |
13339 | { |
13340 | gdb_assert (templ_func != NULL); | |
13341 | ||
2f4732b0 | 13342 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13343 | templ_func->template_arguments |
dda83cd7 | 13344 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13345 | templ_func->n_template_arguments); |
34eaf542 | 13346 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13347 | template_args.data (), |
34eaf542 | 13348 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13349 | |
13350 | /* Make sure that the symtab is set on the new symbols. Even | |
13351 | though they don't appear in this symtab directly, other parts | |
13352 | of gdb assume that symbols do, and this is reasonably | |
13353 | true. */ | |
8634679f | 13354 | for (symbol *sym : template_args) |
3e1d3d8c | 13355 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13356 | } |
13357 | ||
208d8187 JB |
13358 | /* In C++, we can have functions nested inside functions (e.g., when |
13359 | a function declares a class that has methods). This means that | |
13360 | when we finish processing a function scope, we may need to go | |
13361 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13362 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13363 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13364 | |
921e78cf JB |
13365 | /* If we've finished processing a top-level function, subsequent |
13366 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13367 | if (cu->get_builder ()->outermost_context_p ()) |
13368 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13369 | } |
13370 | ||
13371 | /* Process all the DIES contained within a lexical block scope. Start | |
13372 | a new scope, process the dies, and then close the scope. */ | |
13373 | ||
13374 | static void | |
e7c27a73 | 13375 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13376 | { |
5e22e966 | 13377 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13378 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13379 | CORE_ADDR lowpc, highpc; |
13380 | struct die_info *child_die; | |
e142c38c DJ |
13381 | CORE_ADDR baseaddr; |
13382 | ||
b3b3bada | 13383 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13384 | |
13385 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13386 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13387 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13388 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13389 | describe ranges. */ |
e385593e JK |
13390 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13391 | { | |
13392 | case PC_BOUNDS_NOT_PRESENT: | |
13393 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13394 | there was no wrapping by that DW_TAG_lexical_block. | |
13395 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13396 | for (child_die = die->child; | |
13397 | child_die != NULL && child_die->tag; | |
436c571c | 13398 | child_die = child_die->sibling) |
4f7bc5ed TT |
13399 | { |
13400 | /* We might already be processing this DIE. This can happen | |
13401 | in an unusual circumstance -- where a subroutine A | |
13402 | appears lexically in another subroutine B, but A actually | |
13403 | inlines B. The recursion is broken here, rather than in | |
13404 | inherit_abstract_dies, because it seems better to simply | |
13405 | drop concrete children here. */ | |
13406 | if (!child_die->in_process) | |
13407 | process_die (child_die, cu); | |
13408 | } | |
e385593e JK |
13409 | return; |
13410 | case PC_BOUNDS_INVALID: | |
13411 | return; | |
13412 | } | |
3e29f34a MR |
13413 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13414 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13415 | |
c24bdb02 | 13416 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13417 | if (die->child != NULL) |
c906108c | 13418 | { |
639d11d3 | 13419 | child_die = die->child; |
c906108c SS |
13420 | while (child_die && child_die->tag) |
13421 | { | |
e7c27a73 | 13422 | process_die (child_die, cu); |
436c571c | 13423 | child_die = child_die->sibling; |
c906108c SS |
13424 | } |
13425 | } | |
3ea89b92 | 13426 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13427 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13428 | |
c24bdb02 KS |
13429 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13430 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13431 | { |
801e3a5b | 13432 | struct block *block |
dda83cd7 | 13433 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13434 | cstk.start_addr, highpc); |
801e3a5b JB |
13435 | |
13436 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13437 | do here, means that recording a parent's ranges entails |
13438 | walking across all its children's ranges as they appear in | |
13439 | the address map, which is quadratic behavior. | |
13440 | ||
13441 | It would be nicer to record the parent's ranges before | |
13442 | traversing its children, simply overriding whatever you find | |
13443 | there. But since we don't even decide whether to create a | |
13444 | block until after we've traversed its children, that's hard | |
13445 | to do. */ | |
801e3a5b | 13446 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13447 | } |
c24bdb02 KS |
13448 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13449 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13450 | } |
13451 | ||
216f72a1 | 13452 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13453 | |
13454 | static void | |
13455 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13456 | { | |
5e22e966 | 13457 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13458 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13459 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13460 | CORE_ADDR pc, baseaddr; |
13461 | struct attribute *attr; | |
13462 | struct call_site *call_site, call_site_local; | |
13463 | void **slot; | |
13464 | int nparams; | |
13465 | struct die_info *child_die; | |
13466 | ||
b3b3bada | 13467 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13468 | |
216f72a1 JK |
13469 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13470 | if (attr == NULL) | |
13471 | { | |
13472 | /* This was a pre-DWARF-5 GNU extension alias | |
13473 | for DW_AT_call_return_pc. */ | |
13474 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13475 | } | |
96408a79 SA |
13476 | if (!attr) |
13477 | { | |
b98664d3 | 13478 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13479 | "DIE %s [in module %s]"), |
13480 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13481 | return; |
13482 | } | |
95f982e5 | 13483 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13484 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13485 | |
13486 | if (cu->call_site_htab == NULL) | |
13487 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13488 | NULL, &objfile->objfile_obstack, | |
13489 | hashtab_obstack_allocate, NULL); | |
13490 | call_site_local.pc = pc; | |
13491 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13492 | if (*slot != NULL) | |
13493 | { | |
b98664d3 | 13494 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13495 | "DIE %s [in module %s]"), |
13496 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13497 | objfile_name (objfile)); |
96408a79 SA |
13498 | return; |
13499 | } | |
13500 | ||
13501 | /* Count parameters at the caller. */ | |
13502 | ||
13503 | nparams = 0; | |
13504 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13505 | child_die = child_die->sibling) |
96408a79 | 13506 | { |
216f72a1 | 13507 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13508 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13509 | { |
b98664d3 | 13510 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13511 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13512 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13513 | objfile_name (objfile)); |
96408a79 SA |
13514 | continue; |
13515 | } | |
13516 | ||
13517 | nparams++; | |
13518 | } | |
13519 | ||
224c3ddb SM |
13520 | call_site |
13521 | = ((struct call_site *) | |
13522 | obstack_alloc (&objfile->objfile_obstack, | |
13523 | sizeof (*call_site) | |
13524 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13525 | *slot = call_site; |
13526 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13527 | call_site->pc = pc; | |
13528 | ||
216f72a1 JK |
13529 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13530 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13531 | { |
13532 | struct die_info *func_die; | |
13533 | ||
13534 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13535 | for (func_die = die->parent; | |
13536 | func_die && func_die->tag != DW_TAG_subprogram | |
13537 | && func_die->tag != DW_TAG_subroutine_type; | |
13538 | func_die = func_die->parent); | |
13539 | ||
216f72a1 JK |
13540 | /* DW_AT_call_all_calls is a superset |
13541 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13542 | if (func_die |
dda83cd7 SM |
13543 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13544 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13545 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13546 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13547 | { | |
13548 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13549 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13550 | both the initial caller containing the real return address PC and | |
13551 | the final callee containing the current PC of a chain of tail | |
13552 | calls do not need to have the tail call list complete. But any | |
13553 | function candidate for a virtual tail call frame searched via | |
13554 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13555 | determined unambiguously. */ | |
13556 | } | |
13557 | else | |
13558 | { | |
13559 | struct type *func_type = NULL; | |
13560 | ||
13561 | if (func_die) | |
13562 | func_type = get_die_type (func_die, cu); | |
13563 | if (func_type != NULL) | |
13564 | { | |
78134374 | 13565 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13566 | |
13567 | /* Enlist this call site to the function. */ | |
13568 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13569 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13570 | } | |
13571 | else | |
b98664d3 | 13572 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13573 | "DIE %s [in module %s]"), |
13574 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13575 | } |
13576 | } | |
13577 | ||
216f72a1 JK |
13578 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13579 | if (attr == NULL) | |
13580 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13581 | if (attr == NULL) | |
13582 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13583 | if (attr == NULL) |
216f72a1 JK |
13584 | { |
13585 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13586 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13587 | } | |
96408a79 | 13588 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13589 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13590 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13591 | else if (attr->form_is_block ()) |
96408a79 SA |
13592 | { |
13593 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13594 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13595 | |
8d749320 | 13596 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13597 | dlbaton->data = block->data; |
13598 | dlbaton->size = block->size; | |
a50264ba | 13599 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13600 | dlbaton->per_cu = cu->per_cu; |
13601 | ||
13602 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13603 | } | |
cd6c91b4 | 13604 | else if (attr->form_is_ref ()) |
96408a79 | 13605 | { |
96408a79 SA |
13606 | struct dwarf2_cu *target_cu = cu; |
13607 | struct die_info *target_die; | |
13608 | ||
ac9ec31b | 13609 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13610 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13611 | if (die_is_declaration (target_die, target_cu)) |
13612 | { | |
7d45c7c3 | 13613 | const char *target_physname; |
9112db09 JK |
13614 | |
13615 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13616 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13617 | if (target_physname == NULL) |
9112db09 | 13618 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13619 | if (target_physname == NULL) |
b98664d3 | 13620 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13621 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13622 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13623 | else |
7d455152 | 13624 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13625 | } |
13626 | else | |
13627 | { | |
13628 | CORE_ADDR lowpc; | |
13629 | ||
13630 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13631 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13632 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13633 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13634 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13635 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13636 | else |
3e29f34a MR |
13637 | { |
13638 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13639 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13640 | } | |
96408a79 SA |
13641 | } |
13642 | } | |
13643 | else | |
b98664d3 | 13644 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13645 | "block nor reference, for DIE %s [in module %s]"), |
13646 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13647 | |
13648 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13649 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13650 | |
13651 | for (child_die = die->child; | |
13652 | child_die && child_die->tag; | |
436c571c | 13653 | child_die = child_die->sibling) |
96408a79 | 13654 | { |
96408a79 | 13655 | struct call_site_parameter *parameter; |
1788b2d3 | 13656 | struct attribute *loc, *origin; |
96408a79 | 13657 | |
216f72a1 | 13658 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13659 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
13660 | { |
13661 | /* Already printed the complaint above. */ | |
13662 | continue; | |
13663 | } | |
13664 | ||
13665 | gdb_assert (call_site->parameter_count < nparams); | |
13666 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13667 | ||
1788b2d3 JK |
13668 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13669 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13670 | register is contained in DW_AT_call_value. */ |
96408a79 | 13671 | |
24c5c679 | 13672 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13673 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13674 | if (origin == NULL) | |
13675 | { | |
13676 | /* This was a pre-DWARF-5 GNU extension alias | |
13677 | for DW_AT_call_parameter. */ | |
13678 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13679 | } | |
cd6c91b4 | 13680 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13681 | { |
1788b2d3 | 13682 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13683 | |
0826b30a | 13684 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13685 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13686 | { |
13687 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13688 | binding can be done only inside one CU. Such referenced DIE | |
13689 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13690 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13691 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13692 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13693 | objfile_name (objfile)); |
d76b7dbc JK |
13694 | continue; |
13695 | } | |
9c541725 PA |
13696 | parameter->u.param_cu_off |
13697 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13698 | } |
4fc6c0d5 | 13699 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13700 | { |
b98664d3 | 13701 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13702 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13703 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13704 | continue; |
13705 | } | |
24c5c679 | 13706 | else |
96408a79 | 13707 | { |
9d2246fc TT |
13708 | struct dwarf_block *block = loc->as_block (); |
13709 | ||
24c5c679 | 13710 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 13711 | (block->data, &block->data[block->size]); |
24c5c679 JK |
13712 | if (parameter->u.dwarf_reg != -1) |
13713 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
13714 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
13715 | &block->data[block->size], | |
24c5c679 JK |
13716 | ¶meter->u.fb_offset)) |
13717 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13718 | else | |
13719 | { | |
b98664d3 | 13720 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13721 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13722 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13723 | "[in module %s]"), |
9d8780f0 | 13724 | sect_offset_str (child_die->sect_off), |
9c541725 | 13725 | objfile_name (objfile)); |
24c5c679 JK |
13726 | continue; |
13727 | } | |
96408a79 SA |
13728 | } |
13729 | ||
216f72a1 JK |
13730 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13731 | if (attr == NULL) | |
13732 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13733 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13734 | { |
b98664d3 | 13735 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13736 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13737 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13738 | objfile_name (objfile)); |
96408a79 SA |
13739 | continue; |
13740 | } | |
9d2246fc TT |
13741 | |
13742 | struct dwarf_block *block = attr->as_block (); | |
13743 | parameter->value = block->data; | |
13744 | parameter->value_size = block->size; | |
96408a79 SA |
13745 | |
13746 | /* Parameters are not pre-cleared by memset above. */ | |
13747 | parameter->data_value = NULL; | |
13748 | parameter->data_value_size = 0; | |
13749 | call_site->parameter_count++; | |
13750 | ||
216f72a1 JK |
13751 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13752 | if (attr == NULL) | |
13753 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13754 | if (attr != nullptr) |
96408a79 | 13755 | { |
4fc6c0d5 | 13756 | if (!attr->form_is_block ()) |
b98664d3 | 13757 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13758 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13759 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13760 | objfile_name (objfile)); |
96408a79 SA |
13761 | else |
13762 | { | |
9d2246fc TT |
13763 | block = attr->as_block (); |
13764 | parameter->data_value = block->data; | |
13765 | parameter->data_value_size = block->size; | |
96408a79 SA |
13766 | } |
13767 | } | |
13768 | } | |
13769 | } | |
13770 | ||
71a3c369 TT |
13771 | /* Helper function for read_variable. If DIE represents a virtual |
13772 | table, then return the type of the concrete object that is | |
13773 | associated with the virtual table. Otherwise, return NULL. */ | |
13774 | ||
13775 | static struct type * | |
13776 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13777 | { | |
13778 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13779 | if (attr == NULL) | |
13780 | return NULL; | |
13781 | ||
13782 | /* Find the type DIE. */ | |
13783 | struct die_info *type_die = NULL; | |
13784 | struct dwarf2_cu *type_cu = cu; | |
13785 | ||
cd6c91b4 | 13786 | if (attr->form_is_ref ()) |
71a3c369 TT |
13787 | type_die = follow_die_ref (die, attr, &type_cu); |
13788 | if (type_die == NULL) | |
13789 | return NULL; | |
13790 | ||
13791 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13792 | return NULL; | |
13793 | return die_containing_type (type_die, type_cu); | |
13794 | } | |
13795 | ||
13796 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13797 | ||
13798 | static void | |
13799 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13800 | { | |
13801 | struct rust_vtable_symbol *storage = NULL; | |
13802 | ||
13803 | if (cu->language == language_rust) | |
13804 | { | |
13805 | struct type *containing_type = rust_containing_type (die, cu); | |
13806 | ||
13807 | if (containing_type != NULL) | |
13808 | { | |
5e22e966 | 13809 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13810 | |
8c14c3a3 | 13811 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13812 | storage->concrete_type = containing_type; |
cf724bc9 | 13813 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13814 | } |
13815 | } | |
13816 | ||
e4a62c65 TV |
13817 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13818 | struct attribute *abstract_origin | |
13819 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13820 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13821 | if (res == NULL && loc && abstract_origin) | |
13822 | { | |
13823 | /* We have a variable without a name, but with a location and an abstract | |
13824 | origin. This may be a concrete instance of an abstract variable | |
13825 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13826 | later. */ | |
13827 | struct dwarf2_cu *origin_cu = cu; | |
13828 | struct die_info *origin_die | |
13829 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13830 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13831 | per_objfile->per_bfd->abstract_to_concrete | |
13832 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13833 | } |
71a3c369 TT |
13834 | } |
13835 | ||
43988095 JK |
13836 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13837 | reading .debug_rnglists. | |
13838 | Callback's type should be: | |
13839 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13840 | Return true if the attributes are present and valid, otherwise, | |
13841 | return false. */ | |
13842 | ||
13843 | template <typename Callback> | |
13844 | static bool | |
13845 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 13846 | dwarf_tag tag, Callback &&callback) |
43988095 | 13847 | { |
976ca316 SM |
13848 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13849 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 13850 | bfd *obfd = objfile->obfd; |
43988095 | 13851 | /* Base address selection entry. */ |
2b24b6e4 | 13852 | gdb::optional<CORE_ADDR> base; |
43988095 | 13853 | const gdb_byte *buffer; |
43988095 JK |
13854 | CORE_ADDR baseaddr; |
13855 | bool overflow = false; | |
d0ce17d8 CT |
13856 | ULONGEST addr_index; |
13857 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 13858 | |
43988095 | 13859 | base = cu->base_address; |
d0ce17d8 CT |
13860 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
13861 | rnglists_section->read (objfile); | |
43988095 | 13862 | |
d0ce17d8 | 13863 | if (offset >= rnglists_section->size) |
43988095 | 13864 | { |
b98664d3 | 13865 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13866 | offset); |
13867 | return false; | |
13868 | } | |
d0ce17d8 | 13869 | buffer = rnglists_section->buffer + offset; |
43988095 | 13870 | |
b3b3bada | 13871 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13872 | |
13873 | while (1) | |
13874 | { | |
7814882a JK |
13875 | /* Initialize it due to a false compiler warning. */ |
13876 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
13877 | const gdb_byte *buf_end = (rnglists_section->buffer |
13878 | + rnglists_section->size); | |
43988095 JK |
13879 | unsigned int bytes_read; |
13880 | ||
13881 | if (buffer == buf_end) | |
13882 | { | |
13883 | overflow = true; | |
13884 | break; | |
13885 | } | |
13886 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13887 | switch (rlet) | |
13888 | { | |
13889 | case DW_RLE_end_of_list: | |
13890 | break; | |
13891 | case DW_RLE_base_address: | |
13892 | if (buffer + cu->header.addr_size > buf_end) | |
13893 | { | |
13894 | overflow = true; | |
13895 | break; | |
13896 | } | |
c8a7a66f | 13897 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13898 | buffer += bytes_read; |
13899 | break; | |
dda83cd7 SM |
13900 | case DW_RLE_base_addressx: |
13901 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13902 | buffer += bytes_read; | |
13903 | base = read_addr_index (cu, addr_index); | |
13904 | break; | |
43988095 JK |
13905 | case DW_RLE_start_length: |
13906 | if (buffer + cu->header.addr_size > buf_end) | |
13907 | { | |
13908 | overflow = true; | |
13909 | break; | |
13910 | } | |
c8a7a66f TT |
13911 | range_beginning = cu->header.read_address (obfd, buffer, |
13912 | &bytes_read); | |
43988095 JK |
13913 | buffer += bytes_read; |
13914 | range_end = (range_beginning | |
13915 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13916 | buffer += bytes_read; | |
13917 | if (buffer > buf_end) | |
13918 | { | |
13919 | overflow = true; | |
13920 | break; | |
13921 | } | |
13922 | break; | |
d0ce17d8 | 13923 | case DW_RLE_startx_length: |
dda83cd7 SM |
13924 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
13925 | buffer += bytes_read; | |
13926 | range_beginning = read_addr_index (cu, addr_index); | |
13927 | if (buffer > buf_end) | |
13928 | { | |
13929 | overflow = true; | |
13930 | break; | |
13931 | } | |
13932 | range_end = (range_beginning | |
13933 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13934 | buffer += bytes_read; | |
13935 | break; | |
43988095 JK |
13936 | case DW_RLE_offset_pair: |
13937 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13938 | buffer += bytes_read; | |
13939 | if (buffer > buf_end) | |
13940 | { | |
13941 | overflow = true; | |
13942 | break; | |
13943 | } | |
13944 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13945 | buffer += bytes_read; | |
13946 | if (buffer > buf_end) | |
13947 | { | |
13948 | overflow = true; | |
13949 | break; | |
13950 | } | |
13951 | break; | |
13952 | case DW_RLE_start_end: | |
13953 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13954 | { | |
13955 | overflow = true; | |
13956 | break; | |
13957 | } | |
c8a7a66f TT |
13958 | range_beginning = cu->header.read_address (obfd, buffer, |
13959 | &bytes_read); | |
43988095 | 13960 | buffer += bytes_read; |
c8a7a66f | 13961 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13962 | buffer += bytes_read; |
13963 | break; | |
d0ce17d8 | 13964 | case DW_RLE_startx_endx: |
dda83cd7 SM |
13965 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
13966 | buffer += bytes_read; | |
13967 | range_beginning = read_addr_index (cu, addr_index); | |
13968 | if (buffer > buf_end) | |
13969 | { | |
13970 | overflow = true; | |
13971 | break; | |
13972 | } | |
13973 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13974 | buffer += bytes_read; | |
13975 | range_end = read_addr_index (cu, addr_index); | |
13976 | break; | |
43988095 | 13977 | default: |
b98664d3 | 13978 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13979 | return false; |
13980 | } | |
13981 | if (rlet == DW_RLE_end_of_list || overflow) | |
13982 | break; | |
13983 | if (rlet == DW_RLE_base_address) | |
13984 | continue; | |
13985 | ||
43988095 JK |
13986 | if (range_beginning > range_end) |
13987 | { | |
13988 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13989 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13990 | return false; |
13991 | } | |
13992 | ||
13993 | /* Empty range entries have no effect. */ | |
13994 | if (range_beginning == range_end) | |
13995 | continue; | |
13996 | ||
d0ce17d8 CT |
13997 | /* Only DW_RLE_offset_pair needs the base address added. */ |
13998 | if (rlet == DW_RLE_offset_pair) | |
13999 | { | |
14000 | if (!base.has_value ()) | |
14001 | { | |
14002 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14003 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14004 | "DW_RLE_offset_pair)")); | |
14005 | return false; | |
14006 | } | |
14007 | ||
14008 | range_beginning += *base; | |
14009 | range_end += *base; | |
14010 | } | |
43988095 JK |
14011 | |
14012 | /* A not-uncommon case of bad debug info. | |
14013 | Don't pollute the addrmap with bad data. */ | |
14014 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14015 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14016 | { |
b98664d3 | 14017 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14018 | " [in module %s]"), objfile_name (objfile)); |
14019 | continue; | |
14020 | } | |
14021 | ||
14022 | callback (range_beginning, range_end); | |
14023 | } | |
14024 | ||
14025 | if (overflow) | |
14026 | { | |
b98664d3 | 14027 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14028 | "for DW_AT_ranges attribute"), |
14029 | offset); | |
14030 | return false; | |
14031 | } | |
14032 | ||
14033 | return true; | |
14034 | } | |
14035 | ||
14036 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14037 | Callback's type should be: | |
14038 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14039 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14040 | |
43988095 | 14041 | template <typename Callback> |
43039443 | 14042 | static int |
d0ce17d8 | 14043 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14044 | Callback &&callback) |
43039443 | 14045 | { |
5e22e966 SM |
14046 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14047 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14048 | struct comp_unit_head *cu_header = &cu->header; |
14049 | bfd *obfd = objfile->obfd; | |
14050 | unsigned int addr_size = cu_header->addr_size; | |
14051 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14052 | /* Base address selection entry. */ | |
2b24b6e4 | 14053 | gdb::optional<CORE_ADDR> base; |
43039443 | 14054 | unsigned int dummy; |
d521ce57 | 14055 | const gdb_byte *buffer; |
ff013f42 | 14056 | CORE_ADDR baseaddr; |
43039443 | 14057 | |
43988095 | 14058 | if (cu_header->version >= 5) |
d0ce17d8 | 14059 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14060 | |
d00adf39 | 14061 | base = cu->base_address; |
43039443 | 14062 | |
5e22e966 SM |
14063 | per_objfile->per_bfd->ranges.read (objfile); |
14064 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14065 | { |
b98664d3 | 14066 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14067 | offset); |
14068 | return 0; | |
14069 | } | |
5e22e966 | 14070 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14071 | |
b3b3bada | 14072 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14073 | |
43039443 JK |
14074 | while (1) |
14075 | { | |
14076 | CORE_ADDR range_beginning, range_end; | |
14077 | ||
c8a7a66f | 14078 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14079 | buffer += addr_size; |
c8a7a66f | 14080 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14081 | buffer += addr_size; |
14082 | offset += 2 * addr_size; | |
14083 | ||
14084 | /* An end of list marker is a pair of zero addresses. */ | |
14085 | if (range_beginning == 0 && range_end == 0) | |
14086 | /* Found the end of list entry. */ | |
14087 | break; | |
14088 | ||
14089 | /* Each base address selection entry is a pair of 2 values. | |
14090 | The first is the largest possible address, the second is | |
14091 | the base address. Check for a base address here. */ | |
14092 | if ((range_beginning & mask) == mask) | |
14093 | { | |
28d2bfb9 AB |
14094 | /* If we found the largest possible address, then we already |
14095 | have the base address in range_end. */ | |
14096 | base = range_end; | |
43039443 JK |
14097 | continue; |
14098 | } | |
14099 | ||
2b24b6e4 | 14100 | if (!base.has_value ()) |
43039443 JK |
14101 | { |
14102 | /* We have no valid base address for the ranges | |
14103 | data. */ | |
b98664d3 | 14104 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14105 | return 0; |
14106 | } | |
14107 | ||
9277c30c UW |
14108 | if (range_beginning > range_end) |
14109 | { | |
14110 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14111 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14112 | return 0; |
14113 | } | |
14114 | ||
14115 | /* Empty range entries have no effect. */ | |
14116 | if (range_beginning == range_end) | |
14117 | continue; | |
14118 | ||
2b24b6e4 TT |
14119 | range_beginning += *base; |
14120 | range_end += *base; | |
43039443 | 14121 | |
01093045 DE |
14122 | /* A not-uncommon case of bad debug info. |
14123 | Don't pollute the addrmap with bad data. */ | |
14124 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14125 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14126 | { |
b98664d3 | 14127 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14128 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14129 | continue; |
14130 | } | |
14131 | ||
5f46c5a5 JK |
14132 | callback (range_beginning, range_end); |
14133 | } | |
14134 | ||
14135 | return 1; | |
14136 | } | |
14137 | ||
14138 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14139 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
efd7398e | 14140 | If RANGES_PST is not NULL we should set up the `psymtabs_addrmap'. */ |
5f46c5a5 JK |
14141 | |
14142 | static int | |
14143 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14144 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14145 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14146 | { |
5e22e966 | 14147 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 14148 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 14149 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14150 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14151 | int low_set = 0; |
14152 | CORE_ADDR low = 0; | |
14153 | CORE_ADDR high = 0; | |
14154 | int retval; | |
14155 | ||
d0ce17d8 | 14156 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14157 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14158 | { | |
9277c30c | 14159 | if (ranges_pst != NULL) |
3e29f34a MR |
14160 | { |
14161 | CORE_ADDR lowpc; | |
14162 | CORE_ADDR highpc; | |
14163 | ||
79748972 TT |
14164 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14165 | range_beginning + baseaddr) | |
14166 | - baseaddr); | |
14167 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14168 | range_end + baseaddr) | |
14169 | - baseaddr); | |
84685904 | 14170 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 14171 | lowpc, highpc - 1, ranges_pst); |
3e29f34a | 14172 | } |
ff013f42 | 14173 | |
43039443 JK |
14174 | /* FIXME: This is recording everything as a low-high |
14175 | segment of consecutive addresses. We should have a | |
14176 | data structure for discontiguous block ranges | |
14177 | instead. */ | |
14178 | if (! low_set) | |
14179 | { | |
14180 | low = range_beginning; | |
14181 | high = range_end; | |
14182 | low_set = 1; | |
14183 | } | |
14184 | else | |
14185 | { | |
14186 | if (range_beginning < low) | |
14187 | low = range_beginning; | |
14188 | if (range_end > high) | |
14189 | high = range_end; | |
14190 | } | |
5f46c5a5 JK |
14191 | }); |
14192 | if (!retval) | |
14193 | return 0; | |
43039443 JK |
14194 | |
14195 | if (! low_set) | |
14196 | /* If the first entry is an end-of-list marker, the range | |
14197 | describes an empty scope, i.e. no instructions. */ | |
14198 | return 0; | |
14199 | ||
14200 | if (low_return) | |
14201 | *low_return = low; | |
14202 | if (high_return) | |
14203 | *high_return = high; | |
14204 | return 1; | |
14205 | } | |
14206 | ||
3a2b436a JK |
14207 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14208 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14209 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14210 | |
3a2b436a | 14211 | static enum pc_bounds_kind |
af34e669 | 14212 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14213 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14214 | dwarf2_psymtab *pst) |
c906108c | 14215 | { |
976ca316 | 14216 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14217 | struct attribute *attr; |
91da1414 | 14218 | struct attribute *attr_high; |
af34e669 DJ |
14219 | CORE_ADDR low = 0; |
14220 | CORE_ADDR high = 0; | |
e385593e | 14221 | enum pc_bounds_kind ret; |
c906108c | 14222 | |
91da1414 MW |
14223 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14224 | if (attr_high) | |
af34e669 | 14225 | { |
e142c38c | 14226 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14227 | if (attr != nullptr) |
dda83cd7 | 14228 | { |
95f982e5 TT |
14229 | low = attr->as_address (); |
14230 | high = attr_high->as_address (); | |
cd6c91b4 | 14231 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14232 | high += low; |
91da1414 | 14233 | } |
af34e669 DJ |
14234 | else |
14235 | /* Found high w/o low attribute. */ | |
e385593e | 14236 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14237 | |
14238 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14239 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14240 | } |
c906108c | 14241 | else |
af34e669 | 14242 | { |
e142c38c | 14243 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14244 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14245 | { |
2b0c7f41 SM |
14246 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14247 | on DWARF version). */ | |
14248 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14249 | ||
14250 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14251 | this value. */ | |
14252 | if (die->tag != DW_TAG_compile_unit) | |
14253 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14254 | |
af34e669 | 14255 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14256 | .debug_ranges section. */ |
d0ce17d8 CT |
14257 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14258 | die->tag)) | |
e385593e | 14259 | return PC_BOUNDS_INVALID; |
43039443 | 14260 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14261 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14262 | } |
e385593e JK |
14263 | else |
14264 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14265 | } |
c906108c | 14266 | |
48fbe735 | 14267 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14268 | if (high <= low) |
e385593e | 14269 | return PC_BOUNDS_INVALID; |
c906108c SS |
14270 | |
14271 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14272 | eliminate duplicate copies of functions and vtables and such. | |
14273 | The linker will arbitrarily choose one and discard the others. | |
14274 | The AT_*_pc values for such functions refer to local labels in | |
14275 | these sections. If the section from that file was discarded, the | |
14276 | labels are not in the output, so the relocs get a value of 0. | |
14277 | If this is a discarded function, mark the pc bounds as invalid, | |
14278 | so that GDB will ignore it. */ | |
976ca316 | 14279 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14280 | return PC_BOUNDS_INVALID; |
c906108c SS |
14281 | |
14282 | *lowpc = low; | |
96408a79 SA |
14283 | if (highpc) |
14284 | *highpc = high; | |
af34e669 | 14285 | return ret; |
c906108c SS |
14286 | } |
14287 | ||
b084d499 JB |
14288 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14289 | its low and high PC addresses. Do nothing if these addresses could not | |
14290 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14291 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14292 | ||
14293 | static void | |
14294 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14295 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14296 | struct dwarf2_cu *cu) | |
b084d499 JB |
14297 | { |
14298 | CORE_ADDR low, high; | |
14299 | struct die_info *child = die->child; | |
14300 | ||
e385593e | 14301 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14302 | { |
325fac50 PA |
14303 | *lowpc = std::min (*lowpc, low); |
14304 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14305 | } |
14306 | ||
14307 | /* If the language does not allow nested subprograms (either inside | |
14308 | subprograms or lexical blocks), we're done. */ | |
14309 | if (cu->language != language_ada) | |
14310 | return; | |
6e70227d | 14311 | |
b084d499 JB |
14312 | /* Check all the children of the given DIE. If it contains nested |
14313 | subprograms, then check their pc bounds. Likewise, we need to | |
14314 | check lexical blocks as well, as they may also contain subprogram | |
14315 | definitions. */ | |
14316 | while (child && child->tag) | |
14317 | { | |
14318 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14319 | || child->tag == DW_TAG_lexical_block) |
14320 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14321 | child = child->sibling; |
b084d499 JB |
14322 | } |
14323 | } | |
14324 | ||
fae299cd DC |
14325 | /* Get the low and high pc's represented by the scope DIE, and store |
14326 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14327 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14328 | ||
14329 | static void | |
14330 | get_scope_pc_bounds (struct die_info *die, | |
14331 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14332 | struct dwarf2_cu *cu) | |
14333 | { | |
14334 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14335 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14336 | CORE_ADDR current_low, current_high; | |
14337 | ||
3a2b436a | 14338 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14339 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14340 | { |
14341 | best_low = current_low; | |
14342 | best_high = current_high; | |
14343 | } | |
14344 | else | |
14345 | { | |
14346 | struct die_info *child = die->child; | |
14347 | ||
14348 | while (child && child->tag) | |
14349 | { | |
14350 | switch (child->tag) { | |
14351 | case DW_TAG_subprogram: | |
dda83cd7 | 14352 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14353 | break; |
14354 | case DW_TAG_namespace: | |
f55ee35c | 14355 | case DW_TAG_module: |
fae299cd DC |
14356 | /* FIXME: carlton/2004-01-16: Should we do this for |
14357 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14358 | that current GCC's always emit the DIEs corresponding | |
14359 | to definitions of methods of classes as children of a | |
14360 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14361 | the DIEs giving the declarations, which could be | |
14362 | anywhere). But I don't see any reason why the | |
14363 | standards says that they have to be there. */ | |
14364 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14365 | ||
14366 | if (current_low != ((CORE_ADDR) -1)) | |
14367 | { | |
325fac50 PA |
14368 | best_low = std::min (best_low, current_low); |
14369 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14370 | } |
14371 | break; | |
14372 | default: | |
0963b4bd | 14373 | /* Ignore. */ |
fae299cd DC |
14374 | break; |
14375 | } | |
14376 | ||
436c571c | 14377 | child = child->sibling; |
fae299cd DC |
14378 | } |
14379 | } | |
14380 | ||
14381 | *lowpc = best_low; | |
14382 | *highpc = best_high; | |
14383 | } | |
14384 | ||
801e3a5b JB |
14385 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14386 | in DIE. */ | |
380bca97 | 14387 | |
801e3a5b JB |
14388 | static void |
14389 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14390 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14391 | { |
5e22e966 | 14392 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14393 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14394 | struct attribute *attr; |
91da1414 | 14395 | struct attribute *attr_high; |
801e3a5b | 14396 | |
91da1414 MW |
14397 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14398 | if (attr_high) | |
801e3a5b | 14399 | { |
801e3a5b | 14400 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14401 | if (attr != nullptr) |
dda83cd7 | 14402 | { |
95f982e5 TT |
14403 | CORE_ADDR low = attr->as_address (); |
14404 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14405 | |
cd6c91b4 | 14406 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14407 | high += low; |
9a619af0 | 14408 | |
3e29f34a MR |
14409 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14410 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14411 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14412 | } |
801e3a5b JB |
14413 | } |
14414 | ||
14415 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14416 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14417 | { |
2b0c7f41 SM |
14418 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14419 | on DWARF version). */ | |
14420 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14421 | |
2b0c7f41 SM |
14422 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14423 | this value. */ | |
14424 | if (die->tag != DW_TAG_compile_unit) | |
14425 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14426 | |
2d5f09ec | 14427 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14428 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14429 | [&] (CORE_ADDR start, CORE_ADDR end) |
14430 | { | |
58fdfd2c JK |
14431 | start += baseaddr; |
14432 | end += baseaddr; | |
5f46c5a5 JK |
14433 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14434 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14435 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14436 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14437 | }); |
2d5f09ec KB |
14438 | |
14439 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14440 | } |
14441 | } | |
14442 | ||
685b1105 JK |
14443 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14444 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14445 | |
685b1105 JK |
14446 | static void |
14447 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14448 | { |
38360086 | 14449 | int major, minor; |
60d5a603 JK |
14450 | |
14451 | if (cu->producer == NULL) | |
14452 | { | |
14453 | /* For unknown compilers expect their behavior is DWARF version | |
14454 | compliant. | |
14455 | ||
14456 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14457 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14458 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14459 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14460 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14461 | } |
b1ffba5a | 14462 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14463 | { |
38360086 MW |
14464 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14465 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14466 | } |
5230b05a | 14467 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14468 | { |
14469 | cu->producer_is_icc = true; | |
14470 | cu->producer_is_icc_lt_14 = major < 14; | |
14471 | } | |
c258c396 JD |
14472 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14473 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14474 | else |
14475 | { | |
14476 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14477 | compliant. */ | |
60d5a603 JK |
14478 | } |
14479 | ||
9068261f | 14480 | cu->checked_producer = true; |
685b1105 | 14481 | } |
ba919b58 | 14482 | |
685b1105 JK |
14483 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14484 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14485 | during 4.6.0 experimental. */ | |
14486 | ||
9068261f | 14487 | static bool |
685b1105 JK |
14488 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14489 | { | |
14490 | if (!cu->checked_producer) | |
14491 | check_producer (cu); | |
14492 | ||
14493 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14494 | } |
14495 | ||
c258c396 JD |
14496 | |
14497 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14498 | with incorrect is_stmt attributes. */ | |
14499 | ||
14500 | static bool | |
14501 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14502 | { | |
14503 | if (!cu->checked_producer) | |
14504 | check_producer (cu); | |
14505 | ||
14506 | return cu->producer_is_codewarrior; | |
14507 | } | |
14508 | ||
bf23a268 TT |
14509 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14510 | If that attribute is not available, return the appropriate | |
14511 | default. */ | |
60d5a603 JK |
14512 | |
14513 | static enum dwarf_access_attribute | |
bf23a268 | 14514 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14515 | { |
bf23a268 TT |
14516 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14517 | if (attr != nullptr) | |
14518 | { | |
14519 | LONGEST value = attr->constant_value (-1); | |
14520 | if (value == DW_ACCESS_public | |
14521 | || value == DW_ACCESS_protected | |
14522 | || value == DW_ACCESS_private) | |
14523 | return (dwarf_access_attribute) value; | |
14524 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14525 | plongest (value)); | |
14526 | } | |
14527 | ||
60d5a603 JK |
14528 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14529 | { | |
14530 | /* The default DWARF 2 accessibility for members is public, the default | |
14531 | accessibility for inheritance is private. */ | |
14532 | ||
14533 | if (die->tag != DW_TAG_inheritance) | |
14534 | return DW_ACCESS_public; | |
14535 | else | |
14536 | return DW_ACCESS_private; | |
14537 | } | |
14538 | else | |
14539 | { | |
14540 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14541 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14542 | depends on the container kind. */ | |
14543 | ||
14544 | if (die->parent->tag == DW_TAG_class_type) | |
14545 | return DW_ACCESS_private; | |
14546 | else | |
14547 | return DW_ACCESS_public; | |
14548 | } | |
14549 | } | |
14550 | ||
74ac6d43 TT |
14551 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14552 | offset. If the attribute was not found return 0, otherwise return | |
14553 | 1. If it was found but could not properly be handled, set *OFFSET | |
14554 | to 0. */ | |
14555 | ||
14556 | static int | |
14557 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14558 | LONGEST *offset) | |
14559 | { | |
14560 | struct attribute *attr; | |
14561 | ||
14562 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14563 | if (attr != NULL) | |
14564 | { | |
14565 | *offset = 0; | |
14566 | ||
14567 | /* Note that we do not check for a section offset first here. | |
14568 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14569 | so if we see it, we can assume that a constant form is really | |
14570 | a constant and not a section offset. */ | |
cd6c91b4 | 14571 | if (attr->form_is_constant ()) |
0826b30a | 14572 | *offset = attr->constant_value (0); |
cd6c91b4 | 14573 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14574 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14575 | else if (attr->form_is_block ()) |
9d2246fc | 14576 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14577 | else |
14578 | dwarf2_complex_location_expr_complaint (); | |
14579 | ||
14580 | return 1; | |
14581 | } | |
14582 | ||
14583 | return 0; | |
14584 | } | |
14585 | ||
7d79de9a TT |
14586 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14587 | ||
14588 | static void | |
14589 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14590 | struct field *field) | |
14591 | { | |
14592 | struct attribute *attr; | |
14593 | ||
14594 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14595 | if (attr != NULL) | |
14596 | { | |
14597 | if (attr->form_is_constant ()) | |
14598 | { | |
14599 | LONGEST offset = attr->constant_value (0); | |
14600 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14601 | } | |
14602 | else if (attr->form_is_section_offset ()) | |
14603 | dwarf2_complex_location_expr_complaint (); | |
14604 | else if (attr->form_is_block ()) | |
14605 | { | |
14606 | bool handled; | |
9d2246fc | 14607 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14608 | if (handled) |
14609 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14610 | else | |
14611 | { | |
5e22e966 SM |
14612 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14613 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14614 | struct dwarf2_locexpr_baton *dlbaton |
14615 | = XOBNEW (&objfile->objfile_obstack, | |
14616 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14617 | dlbaton->data = attr->as_block ()->data; |
14618 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14619 | /* When using this baton, we want to compute the address |
14620 | of the field, not the value. This is why | |
14621 | is_reference is set to false here. */ | |
14622 | dlbaton->is_reference = false; | |
5e22e966 | 14623 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14624 | dlbaton->per_cu = cu->per_cu; |
14625 | ||
14626 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14627 | } | |
14628 | } | |
14629 | else | |
14630 | dwarf2_complex_location_expr_complaint (); | |
14631 | } | |
14632 | } | |
14633 | ||
c906108c SS |
14634 | /* Add an aggregate field to the field list. */ |
14635 | ||
14636 | static void | |
107d2387 | 14637 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14638 | struct dwarf2_cu *cu) |
6e70227d | 14639 | { |
5e22e966 | 14640 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14641 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14642 | struct nextfield *new_field; |
14643 | struct attribute *attr; | |
14644 | struct field *fp; | |
15d034d0 | 14645 | const char *fieldname = ""; |
c906108c | 14646 | |
7d0ccb61 DJ |
14647 | if (die->tag == DW_TAG_inheritance) |
14648 | { | |
be2daae6 TT |
14649 | fip->baseclasses.emplace_back (); |
14650 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14651 | } |
14652 | else | |
14653 | { | |
be2daae6 TT |
14654 | fip->fields.emplace_back (); |
14655 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14656 | } |
be2daae6 | 14657 | |
9c6a1327 TT |
14658 | new_field->offset = die->sect_off; |
14659 | ||
bf23a268 | 14660 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 14661 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 14662 | fip->non_public_fields = true; |
60d5a603 | 14663 | |
e142c38c | 14664 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14665 | if (attr != nullptr) |
23dca5c3 | 14666 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
14667 | else |
14668 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14669 | |
14670 | fp = &new_field->field; | |
a9a9bd0f | 14671 | |
e142c38c | 14672 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14673 | { |
a9a9bd0f | 14674 | /* Data member other than a C++ static data member. */ |
6e70227d | 14675 | |
c906108c | 14676 | /* Get type of field. */ |
5d14b6e5 | 14677 | fp->set_type (die_type (die, cu)); |
c906108c | 14678 | |
d6a843b5 | 14679 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14680 | |
c906108c | 14681 | /* Get bit size of field (zero if none). */ |
e142c38c | 14682 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14683 | if (attr != nullptr) |
c906108c | 14684 | { |
529908cb | 14685 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
14686 | } |
14687 | else | |
14688 | { | |
14689 | FIELD_BITSIZE (*fp) = 0; | |
14690 | } | |
14691 | ||
14692 | /* Get bit offset of field. */ | |
7d79de9a | 14693 | handle_data_member_location (die, cu, fp); |
e142c38c | 14694 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 14695 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 14696 | { |
d5a22e77 | 14697 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14698 | { |
14699 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
14700 | additional bit offset from the MSB of the containing |
14701 | anonymous object to the MSB of the field. We don't | |
14702 | have to do anything special since we don't need to | |
14703 | know the size of the anonymous object. */ | |
529908cb | 14704 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 14705 | + attr->constant_value (0))); |
c906108c SS |
14706 | } |
14707 | else | |
14708 | { | |
14709 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
14710 | MSB of the anonymous object, subtract off the number of |
14711 | bits from the MSB of the field to the MSB of the | |
14712 | object, and then subtract off the number of bits of | |
14713 | the field itself. The result is the bit offset of | |
14714 | the LSB of the field. */ | |
c906108c | 14715 | int anonymous_size; |
7c184d33 | 14716 | int bit_offset = attr->constant_value (0); |
c906108c | 14717 | |
e142c38c | 14718 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 14719 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
14720 | { |
14721 | /* The size of the anonymous object containing | |
14722 | the bit field is explicit, so use the | |
14723 | indicated size (in bytes). */ | |
7c184d33 | 14724 | anonymous_size = attr->constant_value (0); |
c906108c SS |
14725 | } |
14726 | else | |
14727 | { | |
14728 | /* The size of the anonymous object containing | |
14729 | the bit field must be inferred from the type | |
14730 | attribute of the data member containing the | |
14731 | bit field. */ | |
5d14b6e5 | 14732 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 14733 | } |
f41f5e61 PA |
14734 | SET_FIELD_BITPOS (*fp, |
14735 | (FIELD_BITPOS (*fp) | |
14736 | + anonymous_size * bits_per_byte | |
14737 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14738 | } |
14739 | } | |
da5b30da AA |
14740 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14741 | if (attr != NULL) | |
14742 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14743 | + attr->constant_value (0))); |
c906108c SS |
14744 | |
14745 | /* Get name of field. */ | |
39cbfefa DJ |
14746 | fieldname = dwarf2_name (die, cu); |
14747 | if (fieldname == NULL) | |
14748 | fieldname = ""; | |
d8151005 DJ |
14749 | |
14750 | /* The name is already allocated along with this objfile, so we don't | |
14751 | need to duplicate it for the type. */ | |
14752 | fp->name = fieldname; | |
c906108c SS |
14753 | |
14754 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 14755 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14756 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14757 | { |
d48cc9dd | 14758 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 14759 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 14760 | fip->non_public_fields = true; |
c906108c SS |
14761 | } |
14762 | } | |
a9a9bd0f | 14763 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14764 | { |
a9a9bd0f DC |
14765 | /* C++ static member. */ |
14766 | ||
14767 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14768 | is a declaration, but all versions of G++ as of this writing | |
14769 | (so through at least 3.2.1) incorrectly generate | |
14770 | DW_TAG_variable tags. */ | |
6e70227d | 14771 | |
ff355380 | 14772 | const char *physname; |
c906108c | 14773 | |
a9a9bd0f | 14774 | /* Get name of field. */ |
39cbfefa DJ |
14775 | fieldname = dwarf2_name (die, cu); |
14776 | if (fieldname == NULL) | |
c906108c SS |
14777 | return; |
14778 | ||
254e6b9e | 14779 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14780 | if (attr |
14781 | /* Only create a symbol if this is an external value. | |
14782 | new_symbol checks this and puts the value in the global symbol | |
14783 | table, which we want. If it is not external, new_symbol | |
14784 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14785 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14786 | { |
14787 | /* A static const member, not much different than an enum as far as | |
14788 | we're concerned, except that we can support more types. */ | |
14789 | new_symbol (die, NULL, cu); | |
14790 | } | |
14791 | ||
2df3850c | 14792 | /* Get physical name. */ |
ff355380 | 14793 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14794 | |
d8151005 DJ |
14795 | /* The name is already allocated along with this objfile, so we don't |
14796 | need to duplicate it for the type. */ | |
14797 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 14798 | fp->set_type (die_type (die, cu)); |
d8151005 | 14799 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14800 | } |
14801 | else if (die->tag == DW_TAG_inheritance) | |
14802 | { | |
74ac6d43 | 14803 | /* C++ base class field. */ |
7d79de9a | 14804 | handle_data_member_location (die, cu, fp); |
c906108c | 14805 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
14806 | fp->set_type (die_type (die, cu)); |
14807 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 14808 | } |
2ddeaf8a TT |
14809 | else |
14810 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14811 | } |
14812 | ||
883fd55a KS |
14813 | /* Can the type given by DIE define another type? */ |
14814 | ||
14815 | static bool | |
14816 | type_can_define_types (const struct die_info *die) | |
14817 | { | |
14818 | switch (die->tag) | |
14819 | { | |
14820 | case DW_TAG_typedef: | |
14821 | case DW_TAG_class_type: | |
14822 | case DW_TAG_structure_type: | |
14823 | case DW_TAG_union_type: | |
14824 | case DW_TAG_enumeration_type: | |
14825 | return true; | |
14826 | ||
14827 | default: | |
14828 | return false; | |
14829 | } | |
14830 | } | |
14831 | ||
14832 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14833 | |
14834 | static void | |
883fd55a KS |
14835 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14836 | struct dwarf2_cu *cu) | |
6e70227d | 14837 | { |
be2daae6 TT |
14838 | struct decl_field fp; |
14839 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14840 | |
883fd55a | 14841 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14842 | |
883fd55a | 14843 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14844 | fp.name = dwarf2_name (die, cu); |
14845 | fp.type = read_type_die (die, cu); | |
98751a41 | 14846 | |
c191a687 | 14847 | /* Save accessibility. */ |
bf23a268 | 14848 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
14849 | switch (accessibility) |
14850 | { | |
14851 | case DW_ACCESS_public: | |
14852 | /* The assumed value if neither private nor protected. */ | |
14853 | break; | |
14854 | case DW_ACCESS_private: | |
be2daae6 | 14855 | fp.is_private = 1; |
c191a687 KS |
14856 | break; |
14857 | case DW_ACCESS_protected: | |
be2daae6 | 14858 | fp.is_protected = 1; |
c191a687 | 14859 | break; |
c191a687 KS |
14860 | } |
14861 | ||
883fd55a | 14862 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14863 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14864 | else |
be2daae6 | 14865 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14866 | } |
14867 | ||
9c6a1327 TT |
14868 | /* A convenience typedef that's used when finding the discriminant |
14869 | field for a variant part. */ | |
1b95cdb7 SM |
14870 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14871 | offset_map_type; | |
9c6a1327 TT |
14872 | |
14873 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14874 | where the results will be stored. VARIANT is the variant to | |
14875 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14876 | or unsigned. */ | |
14877 | ||
14878 | static const gdb::array_view<discriminant_range> | |
14879 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14880 | bool is_unsigned) | |
14881 | { | |
14882 | std::vector<discriminant_range> ranges; | |
14883 | ||
14884 | if (variant.default_branch) | |
14885 | return {}; | |
14886 | ||
14887 | if (variant.discr_list_data == nullptr) | |
14888 | { | |
14889 | discriminant_range r | |
14890 | = {variant.discriminant_value, variant.discriminant_value}; | |
14891 | ranges.push_back (r); | |
14892 | } | |
14893 | else | |
14894 | { | |
14895 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14896 | variant.discr_list_data->size); | |
14897 | while (!data.empty ()) | |
14898 | { | |
14899 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14900 | { | |
14901 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14902 | break; | |
14903 | } | |
14904 | bool is_range = data[0] == DW_DSC_range; | |
14905 | data = data.slice (1); | |
14906 | ||
14907 | ULONGEST low, high; | |
14908 | unsigned int bytes_read; | |
14909 | ||
14910 | if (data.empty ()) | |
14911 | { | |
14912 | complaint (_("DW_AT_discr_list missing low value")); | |
14913 | break; | |
14914 | } | |
14915 | if (is_unsigned) | |
14916 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14917 | else | |
14918 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14919 | &bytes_read); | |
14920 | data = data.slice (bytes_read); | |
14921 | ||
14922 | if (is_range) | |
14923 | { | |
14924 | if (data.empty ()) | |
14925 | { | |
14926 | complaint (_("DW_AT_discr_list missing high value")); | |
14927 | break; | |
14928 | } | |
14929 | if (is_unsigned) | |
14930 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14931 | &bytes_read); | |
14932 | else | |
14933 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14934 | &bytes_read); | |
14935 | data = data.slice (bytes_read); | |
14936 | } | |
14937 | else | |
14938 | high = low; | |
14939 | ||
14940 | ranges.push_back ({ low, high }); | |
14941 | } | |
14942 | } | |
14943 | ||
14944 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14945 | ranges.size ()); | |
14946 | std::copy (ranges.begin (), ranges.end (), result); | |
14947 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14948 | } | |
14949 | ||
14950 | static const gdb::array_view<variant_part> create_variant_parts | |
14951 | (struct obstack *obstack, | |
14952 | const offset_map_type &offset_map, | |
14953 | struct field_info *fi, | |
14954 | const std::vector<variant_part_builder> &variant_parts); | |
14955 | ||
14956 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14957 | the variant to fill in. OBSTACK is where any needed allocations | |
14958 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14959 | fields for the type. FI describes the fields of the type we're | |
14960 | processing. FIELD is the variant field we're converting. */ | |
14961 | ||
14962 | static void | |
14963 | create_one_variant (variant &result, struct obstack *obstack, | |
14964 | const offset_map_type &offset_map, | |
14965 | struct field_info *fi, const variant_field &field) | |
14966 | { | |
14967 | result.discriminants = convert_variant_range (obstack, field, false); | |
14968 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14969 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14970 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14971 | field.variant_parts); | |
14972 | } | |
14973 | ||
14974 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14975 | is the variant part to fill in. OBSTACK is where any needed | |
14976 | allocations will be done. OFFSET_MAP holds the mapping from | |
14977 | section offsets to fields for the type. FI describes the fields of | |
14978 | the type we're processing. BUILDER is the variant part to be | |
14979 | converted. */ | |
14980 | ||
14981 | static void | |
14982 | create_one_variant_part (variant_part &result, | |
14983 | struct obstack *obstack, | |
14984 | const offset_map_type &offset_map, | |
14985 | struct field_info *fi, | |
14986 | const variant_part_builder &builder) | |
14987 | { | |
14988 | auto iter = offset_map.find (builder.discriminant_offset); | |
14989 | if (iter == offset_map.end ()) | |
14990 | { | |
14991 | result.discriminant_index = -1; | |
14992 | /* Doesn't matter. */ | |
14993 | result.is_unsigned = false; | |
14994 | } | |
14995 | else | |
14996 | { | |
14997 | result.discriminant_index = iter->second; | |
14998 | result.is_unsigned | |
c6d940a9 | 14999 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15000 | } |
15001 | ||
15002 | size_t n = builder.variants.size (); | |
15003 | variant *output = new (obstack) variant[n]; | |
15004 | for (size_t i = 0; i < n; ++i) | |
15005 | create_one_variant (output[i], obstack, offset_map, fi, | |
15006 | builder.variants[i]); | |
15007 | ||
15008 | result.variants = gdb::array_view<variant> (output, n); | |
15009 | } | |
15010 | ||
15011 | /* Create a vector of variant parts that can be attached to a type. | |
15012 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15013 | holds the mapping from section offsets to fields for the type. FI | |
15014 | describes the fields of the type we're processing. VARIANT_PARTS | |
15015 | is the vector to convert. */ | |
15016 | ||
15017 | static const gdb::array_view<variant_part> | |
15018 | create_variant_parts (struct obstack *obstack, | |
15019 | const offset_map_type &offset_map, | |
15020 | struct field_info *fi, | |
15021 | const std::vector<variant_part_builder> &variant_parts) | |
15022 | { | |
15023 | if (variant_parts.empty ()) | |
15024 | return {}; | |
15025 | ||
15026 | size_t n = variant_parts.size (); | |
15027 | variant_part *result = new (obstack) variant_part[n]; | |
15028 | for (size_t i = 0; i < n; ++i) | |
15029 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15030 | variant_parts[i]); | |
15031 | ||
15032 | return gdb::array_view<variant_part> (result, n); | |
15033 | } | |
15034 | ||
15035 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15036 | done. */ | |
15037 | ||
15038 | static void | |
15039 | add_variant_property (struct field_info *fip, struct type *type, | |
15040 | struct dwarf2_cu *cu) | |
15041 | { | |
15042 | /* Map section offsets of fields to their field index. Note the | |
15043 | field index here does not take the number of baseclasses into | |
15044 | account. */ | |
15045 | offset_map_type offset_map; | |
15046 | for (int i = 0; i < fip->fields.size (); ++i) | |
15047 | offset_map[fip->fields[i].offset] = i; | |
15048 | ||
5e22e966 | 15049 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15050 | gdb::array_view<variant_part> parts |
15051 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15052 | fip->variant_parts); | |
15053 | ||
15054 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15055 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15056 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15057 | sizeof (parts))); | |
9c6a1327 | 15058 | |
5c54719c | 15059 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15060 | } |
15061 | ||
c906108c SS |
15062 | /* Create the vector of fields, and attach it to the type. */ |
15063 | ||
15064 | static void | |
fba45db2 | 15065 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15066 | struct dwarf2_cu *cu) |
c906108c | 15067 | { |
317f7127 | 15068 | int nfields = fip->nfields (); |
c906108c SS |
15069 | |
15070 | /* Record the field count, allocate space for the array of fields, | |
15071 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15072 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15073 | type->set_fields |
15074 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15075 | |
b4ba55a1 | 15076 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15077 | { |
15078 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15079 | ||
15080 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15081 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15082 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15083 | ||
15084 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15085 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15086 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15087 | ||
774b6a14 TT |
15088 | TYPE_FIELD_IGNORE_BITS (type) = |
15089 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15090 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15091 | } |
15092 | ||
15093 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15094 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15095 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15096 | { |
be2daae6 | 15097 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15098 | unsigned char *pointer; |
c906108c SS |
15099 | |
15100 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15101 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15102 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15103 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15104 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15105 | } |
15106 | ||
9c6a1327 TT |
15107 | if (!fip->variant_parts.empty ()) |
15108 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15109 | |
be2daae6 TT |
15110 | /* Copy the saved-up fields into the field vector. */ |
15111 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15112 | { |
be2daae6 TT |
15113 | struct nextfield &field |
15114 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15115 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15116 | |
ceacbf6e | 15117 | type->field (i) = field.field; |
be2daae6 | 15118 | switch (field.accessibility) |
c906108c | 15119 | { |
c5aa993b | 15120 | case DW_ACCESS_private: |
b4ba55a1 | 15121 | if (cu->language != language_ada) |
be2daae6 | 15122 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15123 | break; |
c906108c | 15124 | |
c5aa993b | 15125 | case DW_ACCESS_protected: |
b4ba55a1 | 15126 | if (cu->language != language_ada) |
be2daae6 | 15127 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15128 | break; |
c906108c | 15129 | |
c5aa993b JM |
15130 | case DW_ACCESS_public: |
15131 | break; | |
c906108c | 15132 | |
c5aa993b JM |
15133 | default: |
15134 | /* Unknown accessibility. Complain and treat it as public. */ | |
15135 | { | |
b98664d3 | 15136 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15137 | field.accessibility); |
c5aa993b JM |
15138 | } |
15139 | break; | |
c906108c | 15140 | } |
be2daae6 | 15141 | if (i < fip->baseclasses.size ()) |
c906108c | 15142 | { |
be2daae6 | 15143 | switch (field.virtuality) |
c906108c | 15144 | { |
c5aa993b JM |
15145 | case DW_VIRTUALITY_virtual: |
15146 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15147 | if (cu->language == language_ada) |
a73c6dcd | 15148 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15149 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15150 | break; |
c906108c SS |
15151 | } |
15152 | } | |
c906108c SS |
15153 | } |
15154 | } | |
15155 | ||
7d27a96d TT |
15156 | /* Return true if this member function is a constructor, false |
15157 | otherwise. */ | |
15158 | ||
15159 | static int | |
15160 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15161 | { | |
15162 | const char *fieldname; | |
fe978cb0 | 15163 | const char *type_name; |
7d27a96d TT |
15164 | int len; |
15165 | ||
15166 | if (die->parent == NULL) | |
15167 | return 0; | |
15168 | ||
15169 | if (die->parent->tag != DW_TAG_structure_type | |
15170 | && die->parent->tag != DW_TAG_union_type | |
15171 | && die->parent->tag != DW_TAG_class_type) | |
15172 | return 0; | |
15173 | ||
15174 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15175 | type_name = dwarf2_name (die->parent, cu); |
15176 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15177 | return 0; |
15178 | ||
15179 | len = strlen (fieldname); | |
fe978cb0 PA |
15180 | return (strncmp (fieldname, type_name, len) == 0 |
15181 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15182 | } |
15183 | ||
c906108c SS |
15184 | /* Add a member function to the proper fieldlist. */ |
15185 | ||
15186 | static void | |
107d2387 | 15187 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15188 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15189 | { |
5e22e966 | 15190 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15191 | struct attribute *attr; |
c906108c | 15192 | int i; |
be2daae6 | 15193 | struct fnfieldlist *flp = nullptr; |
c906108c | 15194 | struct fn_field *fnp; |
15d034d0 | 15195 | const char *fieldname; |
f792889a | 15196 | struct type *this_type; |
c906108c | 15197 | |
b4ba55a1 | 15198 | if (cu->language == language_ada) |
a73c6dcd | 15199 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15200 | |
2df3850c | 15201 | /* Get name of member function. */ |
39cbfefa DJ |
15202 | fieldname = dwarf2_name (die, cu); |
15203 | if (fieldname == NULL) | |
2df3850c | 15204 | return; |
c906108c | 15205 | |
c906108c | 15206 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15207 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15208 | { |
27bfe10e | 15209 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15210 | { |
15211 | flp = &fip->fnfieldlists[i]; | |
15212 | break; | |
15213 | } | |
c906108c SS |
15214 | } |
15215 | ||
be2daae6 TT |
15216 | /* Create a new fnfieldlist if necessary. */ |
15217 | if (flp == nullptr) | |
c906108c | 15218 | { |
be2daae6 TT |
15219 | fip->fnfieldlists.emplace_back (); |
15220 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15221 | flp->name = fieldname; |
be2daae6 | 15222 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15223 | } |
15224 | ||
be2daae6 TT |
15225 | /* Create a new member function field and add it to the vector of |
15226 | fnfieldlists. */ | |
15227 | flp->fnfields.emplace_back (); | |
15228 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15229 | |
15230 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15231 | if (cu->language == language_cplus) |
be2daae6 TT |
15232 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15233 | die, cu); | |
3da10d80 KS |
15234 | else |
15235 | { | |
1d06ead6 | 15236 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15237 | fnp->physname = physname ? physname : ""; |
15238 | } | |
15239 | ||
c906108c | 15240 | fnp->type = alloc_type (objfile); |
f792889a | 15241 | this_type = read_type_die (die, cu); |
78134374 | 15242 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15243 | { |
1f704f76 | 15244 | int nparams = this_type->num_fields (); |
c906108c | 15245 | |
f792889a | 15246 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15247 | of the method itself (TYPE_CODE_METHOD). */ |
15248 | smash_to_method_type (fnp->type, type, | |
f792889a | 15249 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15250 | this_type->fields (), |
1f704f76 | 15251 | this_type->num_fields (), |
a409645d | 15252 | this_type->has_varargs ()); |
c906108c SS |
15253 | |
15254 | /* Handle static member functions. | |
dda83cd7 SM |
15255 | Dwarf2 has no clean way to discern C++ static and non-static |
15256 | member functions. G++ helps GDB by marking the first | |
15257 | parameter for non-static member functions (which is the this | |
15258 | pointer) as artificial. We obtain this information from | |
15259 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15260 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15261 | fnp->voffset = VOFFSET_STATIC; |
15262 | } | |
15263 | else | |
b98664d3 | 15264 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15265 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15266 | |
15267 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15268 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15269 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15270 | |
3e43a32a MS |
15271 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15272 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15273 | |
15274 | /* Get accessibility. */ | |
bf23a268 | 15275 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15276 | switch (accessibility) |
c906108c | 15277 | { |
60d5a603 JK |
15278 | case DW_ACCESS_private: |
15279 | fnp->is_private = 1; | |
15280 | break; | |
15281 | case DW_ACCESS_protected: | |
15282 | fnp->is_protected = 1; | |
15283 | break; | |
c906108c SS |
15284 | } |
15285 | ||
b02dede2 | 15286 | /* Check for artificial methods. */ |
e142c38c | 15287 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15288 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15289 | fnp->is_artificial = 1; |
15290 | ||
e35000a7 TBA |
15291 | /* Check for defaulted methods. */ |
15292 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15293 | if (attr != nullptr) |
15294 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15295 | |
15296 | /* Check for deleted methods. */ | |
15297 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15298 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15299 | fnp->is_deleted = 1; |
15300 | ||
7d27a96d TT |
15301 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15302 | ||
0d564a31 | 15303 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15304 | function. For older versions of GCC, this is an offset in the |
15305 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15306 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15307 | to the object address. */ |
15308 | ||
e142c38c | 15309 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15310 | if (attr != nullptr) |
8e19ed76 | 15311 | { |
9d2246fc | 15312 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15313 | { |
9d2246fc TT |
15314 | struct dwarf_block *block = attr->as_block (); |
15315 | ||
15316 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15317 | { |
15318 | /* Old-style GCC. */ | |
9d2246fc | 15319 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15320 | } |
9d2246fc TT |
15321 | else if (block->data[0] == DW_OP_deref |
15322 | || (block->size > 1 | |
15323 | && block->data[0] == DW_OP_deref_size | |
15324 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15325 | { |
9d2246fc | 15326 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15327 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15328 | dwarf2_complex_location_expr_complaint (); | |
15329 | else | |
15330 | fnp->voffset /= cu->header.addr_size; | |
15331 | fnp->voffset += 2; | |
15332 | } | |
15333 | else | |
15334 | dwarf2_complex_location_expr_complaint (); | |
15335 | ||
15336 | if (!fnp->fcontext) | |
7e993ebf KS |
15337 | { |
15338 | /* If there is no `this' field and no DW_AT_containing_type, | |
15339 | we cannot actually find a base class context for the | |
15340 | vtable! */ | |
1f704f76 | 15341 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15342 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15343 | { | |
b98664d3 | 15344 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15345 | "function \"%s\" (offset %s)"), |
15346 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15347 | } |
15348 | else | |
15349 | { | |
15350 | fnp->fcontext | |
940da03e | 15351 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15352 | } |
15353 | } | |
aec5aa8b | 15354 | } |
cd6c91b4 | 15355 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15356 | { |
4d3c2250 | 15357 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15358 | } |
8e19ed76 | 15359 | else |
dda83cd7 | 15360 | { |
4d3c2250 KB |
15361 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15362 | fieldname); | |
dda83cd7 | 15363 | } |
0d564a31 | 15364 | } |
d48cc9dd DJ |
15365 | else |
15366 | { | |
15367 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15368 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15369 | { |
15370 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15371 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15372 | "but the vtable offset is not specified"), |
9d8780f0 | 15373 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15374 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15375 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15376 | } | |
15377 | } | |
c906108c SS |
15378 | } |
15379 | ||
15380 | /* Create the vector of member function fields, and attach it to the type. */ | |
15381 | ||
15382 | static void | |
fba45db2 | 15383 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15384 | struct dwarf2_cu *cu) |
c906108c | 15385 | { |
b4ba55a1 | 15386 | if (cu->language == language_ada) |
a73c6dcd | 15387 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15388 | |
c906108c SS |
15389 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15390 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15391 | TYPE_ALLOC (type, |
15392 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15393 | |
be2daae6 | 15394 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15395 | { |
be2daae6 | 15396 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15397 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15398 | |
be2daae6 TT |
15399 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15400 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15401 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15402 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15403 | ||
15404 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15405 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15406 | } |
15407 | ||
be2daae6 | 15408 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15409 | } |
15410 | ||
1168df01 JB |
15411 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15412 | language, zero otherwise. */ | |
15413 | static int | |
15414 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15415 | { | |
15416 | static const char vptr[] = "_vptr"; | |
15417 | ||
9c37b5ae TT |
15418 | /* Look for the C++ form of the vtable. */ |
15419 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15420 | return 1; |
15421 | ||
15422 | return 0; | |
15423 | } | |
15424 | ||
c0dd20ea | 15425 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15426 | functions, with the ABI-specified layout. If TYPE describes |
15427 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15428 | |
15429 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15430 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15431 | |
0b92b5bb TT |
15432 | static void |
15433 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15434 | { |
09e2d7c7 | 15435 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15436 | |
15437 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15438 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15439 | return; |
c0dd20ea DJ |
15440 | |
15441 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15442 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15443 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15444 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15445 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15446 | return; | |
c0dd20ea DJ |
15447 | |
15448 | /* Find the type of the method. */ | |
940da03e | 15449 | pfn_type = type->field (0).type (); |
c0dd20ea | 15450 | if (pfn_type == NULL |
78134374 SM |
15451 | || pfn_type->code () != TYPE_CODE_PTR |
15452 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15453 | return; |
c0dd20ea DJ |
15454 | |
15455 | /* Look for the "this" argument. */ | |
15456 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15457 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15458 | /* || pfn_type->field (0).type () == NULL */ |
15459 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15460 | return; |
c0dd20ea | 15461 | |
940da03e | 15462 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15463 | new_type = alloc_type (objfile); |
09e2d7c7 | 15464 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15465 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15466 | pfn_type->has_varargs ()); |
0b92b5bb | 15467 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15468 | } |
1168df01 | 15469 | |
e26624c6 TT |
15470 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15471 | requires rewriting, then copy it and return the updated copy. | |
15472 | Otherwise return nullptr. */ | |
15473 | ||
15474 | static struct type * | |
15475 | rewrite_array_type (struct type *type) | |
15476 | { | |
15477 | if (type->code () != TYPE_CODE_ARRAY) | |
15478 | return nullptr; | |
15479 | ||
15480 | struct type *index_type = type->index_type (); | |
15481 | range_bounds *current_bounds = index_type->bounds (); | |
15482 | ||
15483 | /* Handle multi-dimensional arrays. */ | |
15484 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15485 | if (new_target == nullptr) | |
15486 | { | |
15487 | /* Maybe we don't need to rewrite this array. */ | |
15488 | if (current_bounds->low.kind () == PROP_CONST | |
15489 | && current_bounds->high.kind () == PROP_CONST) | |
15490 | return nullptr; | |
15491 | } | |
15492 | ||
15493 | /* Either the target type was rewritten, or the bounds have to be | |
15494 | updated. Either way we want to copy the type and update | |
15495 | everything. */ | |
15496 | struct type *copy = copy_type (type); | |
15497 | int nfields = copy->num_fields (); | |
15498 | field *new_fields | |
15499 | = ((struct field *) TYPE_ZALLOC (copy, | |
15500 | nfields * sizeof (struct field))); | |
15501 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15502 | copy->set_fields (new_fields); | |
15503 | if (new_target != nullptr) | |
15504 | TYPE_TARGET_TYPE (copy) = new_target; | |
15505 | ||
15506 | struct type *index_copy = copy_type (index_type); | |
15507 | range_bounds *bounds | |
15508 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15509 | sizeof (range_bounds)); | |
15510 | *bounds = *current_bounds; | |
15511 | bounds->low.set_const_val (1); | |
15512 | bounds->high.set_const_val (0); | |
15513 | index_copy->set_bounds (bounds); | |
15514 | copy->set_index_type (index_copy); | |
15515 | ||
15516 | return copy; | |
15517 | } | |
15518 | ||
57567375 TT |
15519 | /* While some versions of GCC will generate complicated DWARF for an |
15520 | array (see quirk_ada_thick_pointer), more recent versions were | |
15521 | modified to emit an explicit thick pointer structure. However, in | |
15522 | this case, the array still has DWARF expressions for its ranges, | |
15523 | and these must be ignored. */ | |
15524 | ||
15525 | static void | |
15526 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15527 | struct type *type) | |
15528 | { | |
15529 | gdb_assert (cu->language == language_ada); | |
15530 | ||
15531 | /* Check for a structure with two children. */ | |
15532 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15533 | return; | |
15534 | ||
15535 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15536 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15537 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15538 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15539 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15540 | return; | |
15541 | ||
15542 | /* Make sure we're looking at a pointer to an array. */ | |
15543 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15544 | return; | |
57567375 | 15545 | |
e26624c6 TT |
15546 | /* The Ada code already knows how to handle these types, so all that |
15547 | we need to do is turn the bounds into static bounds. However, we | |
15548 | don't want to rewrite existing array or index types in-place, | |
15549 | because those may be referenced in other contexts where this | |
15550 | rewriting is undesirable. */ | |
15551 | struct type *new_ary_type | |
15552 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15553 | if (new_ary_type != nullptr) | |
15554 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15555 | } |
15556 | ||
2b4424c3 TT |
15557 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15558 | appropriate error checking and issuing complaints if there is a | |
15559 | problem. */ | |
15560 | ||
15561 | static ULONGEST | |
15562 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15563 | { | |
15564 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15565 | ||
15566 | if (attr == nullptr) | |
15567 | return 0; | |
15568 | ||
cd6c91b4 | 15569 | if (!attr->form_is_constant ()) |
2b4424c3 | 15570 | { |
b98664d3 | 15571 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15572 | " - DIE at %s [in module %s]"), |
15573 | sect_offset_str (die->sect_off), | |
5e22e966 | 15574 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15575 | return 0; |
15576 | } | |
15577 | ||
529908cb TT |
15578 | LONGEST val = attr->constant_value (0); |
15579 | if (val < 0) | |
2b4424c3 | 15580 | { |
529908cb TT |
15581 | complaint (_("DW_AT_alignment value must not be negative" |
15582 | " - DIE at %s [in module %s]"), | |
15583 | sect_offset_str (die->sect_off), | |
15584 | objfile_name (cu->per_objfile->objfile)); | |
15585 | return 0; | |
2b4424c3 | 15586 | } |
529908cb | 15587 | ULONGEST align = val; |
2b4424c3 TT |
15588 | |
15589 | if (align == 0) | |
15590 | { | |
b98664d3 | 15591 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15592 | " - DIE at %s [in module %s]"), |
15593 | sect_offset_str (die->sect_off), | |
5e22e966 | 15594 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15595 | return 0; |
15596 | } | |
15597 | if ((align & (align - 1)) != 0) | |
15598 | { | |
b98664d3 | 15599 | complaint (_("DW_AT_alignment value must be a power of 2" |
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 | ||
15606 | return align; | |
15607 | } | |
15608 | ||
15609 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15610 | the alignment for TYPE. */ | |
15611 | ||
15612 | static void | |
15613 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15614 | struct type *type) | |
15615 | { | |
15616 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15617 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15618 | " - DIE at %s [in module %s]"), |
15619 | sect_offset_str (die->sect_off), | |
5e22e966 | 15620 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15621 | } |
685b1105 | 15622 | |
e35000a7 TBA |
15623 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15624 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15625 | ||
15626 | static bool | |
15627 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15628 | { | |
15629 | switch (value) | |
15630 | { | |
15631 | case DW_CC_normal: | |
15632 | case DW_CC_pass_by_reference: | |
15633 | case DW_CC_pass_by_value: | |
15634 | return true; | |
15635 | ||
15636 | default: | |
15637 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15638 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15639 | return false; |
15640 | } | |
15641 | } | |
15642 | ||
d0922fcf TBA |
15643 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15644 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15645 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15646 | ||
15647 | static bool | |
15648 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15649 | { | |
15650 | switch (value) | |
15651 | { | |
15652 | case DW_CC_normal: | |
15653 | case DW_CC_program: | |
15654 | case DW_CC_nocall: | |
15655 | return true; | |
15656 | ||
15657 | case DW_CC_GNU_renesas_sh: | |
15658 | case DW_CC_GNU_borland_fastcall_i386: | |
15659 | case DW_CC_GDB_IBM_OpenCL: | |
15660 | return true; | |
15661 | ||
15662 | default: | |
15663 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15664 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15665 | return false; |
15666 | } | |
15667 | } | |
15668 | ||
c906108c | 15669 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15670 | (definition) to create a type for the structure or union. Fill in |
15671 | the type's name and general properties; the members will not be | |
83655187 DE |
15672 | processed until process_structure_scope. A symbol table entry for |
15673 | the type will also not be done until process_structure_scope (assuming | |
15674 | the type has a name). | |
c906108c | 15675 | |
c767944b DJ |
15676 | NOTE: we need to call these functions regardless of whether or not the |
15677 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15678 | structure or union. This gets the type entered into our set of |
83655187 | 15679 | user defined types. */ |
c906108c | 15680 | |
f792889a | 15681 | static struct type * |
134d01f1 | 15682 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15683 | { |
5e22e966 | 15684 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15685 | struct type *type; |
15686 | struct attribute *attr; | |
15d034d0 | 15687 | const char *name; |
c906108c | 15688 | |
348e048f DE |
15689 | /* If the definition of this type lives in .debug_types, read that type. |
15690 | Don't follow DW_AT_specification though, that will take us back up | |
15691 | the chain and we want to go down. */ | |
052c8bb8 | 15692 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15693 | if (attr != nullptr) |
348e048f | 15694 | { |
ac9ec31b | 15695 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15696 | |
ac9ec31b | 15697 | /* The type's CU may not be the same as CU. |
02142a6c | 15698 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15699 | return set_die_type (die, type, cu); |
15700 | } | |
15701 | ||
c0dd20ea | 15702 | type = alloc_type (objfile); |
c906108c | 15703 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15704 | |
39cbfefa DJ |
15705 | name = dwarf2_name (die, cu); |
15706 | if (name != NULL) | |
c906108c | 15707 | { |
987504bb | 15708 | if (cu->language == language_cplus |
c44af4eb TT |
15709 | || cu->language == language_d |
15710 | || cu->language == language_rust) | |
63d06c5c | 15711 | { |
15d034d0 | 15712 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15713 | |
15714 | /* dwarf2_full_name might have already finished building the DIE's | |
15715 | type. If so, there is no need to continue. */ | |
15716 | if (get_die_type (die, cu) != NULL) | |
15717 | return get_die_type (die, cu); | |
15718 | ||
d0e39ea2 | 15719 | type->set_name (full_name); |
63d06c5c DC |
15720 | } |
15721 | else | |
15722 | { | |
d8151005 DJ |
15723 | /* The name is already allocated along with this objfile, so |
15724 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15725 | type->set_name (name); |
63d06c5c | 15726 | } |
c906108c SS |
15727 | } |
15728 | ||
15729 | if (die->tag == DW_TAG_structure_type) | |
15730 | { | |
67607e24 | 15731 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15732 | } |
15733 | else if (die->tag == DW_TAG_union_type) | |
15734 | { | |
67607e24 | 15735 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15736 | } |
15737 | else | |
15738 | { | |
67607e24 | 15739 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15740 | } |
15741 | ||
0cc2414c | 15742 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
aa70e35c | 15743 | type->set_is_declared_class (true); |
0cc2414c | 15744 | |
e35000a7 TBA |
15745 | /* Store the calling convention in the type if it's available in |
15746 | the die. Otherwise the calling convention remains set to | |
15747 | the default value DW_CC_normal. */ | |
15748 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15749 | if (attr != nullptr | |
529908cb | 15750 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
15751 | { |
15752 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15753 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 15754 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
15755 | } |
15756 | ||
e142c38c | 15757 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15758 | if (attr != nullptr) |
c906108c | 15759 | { |
cd6c91b4 | 15760 | if (attr->form_is_constant ()) |
dda83cd7 | 15761 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
15762 | else |
15763 | { | |
f8e89861 | 15764 | struct dynamic_prop prop; |
293e7e51 | 15765 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15766 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 15767 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 15768 | } |
c906108c SS |
15769 | } |
15770 | else | |
15771 | { | |
15772 | TYPE_LENGTH (type) = 0; | |
15773 | } | |
15774 | ||
2b4424c3 TT |
15775 | maybe_set_alignment (cu, die, type); |
15776 | ||
5230b05a | 15777 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15778 | { |
5230b05a WT |
15779 | /* ICC<14 does not output the required DW_AT_declaration on |
15780 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 15781 | type->set_is_stub (true); |
685b1105 JK |
15782 | } |
15783 | else | |
9baccff6 | 15784 | type->set_stub_is_supported (true); |
685b1105 | 15785 | |
dc718098 | 15786 | if (die_is_declaration (die, cu)) |
b4b73759 | 15787 | type->set_is_stub (true); |
a6c727b2 DJ |
15788 | else if (attr == NULL && die->child == NULL |
15789 | && producer_is_realview (cu->producer)) | |
15790 | /* RealView does not output the required DW_AT_declaration | |
15791 | on incomplete types. */ | |
b4b73759 | 15792 | type->set_is_stub (true); |
dc718098 | 15793 | |
c906108c SS |
15794 | /* We need to add the type field to the die immediately so we don't |
15795 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15796 | type within the structure itself. */ |
1c379e20 | 15797 | set_die_type (die, type, cu); |
c906108c | 15798 | |
7e314c57 JK |
15799 | /* set_die_type should be already done. */ |
15800 | set_descriptive_type (type, die, cu); | |
15801 | ||
c767944b DJ |
15802 | return type; |
15803 | } | |
15804 | ||
9c6a1327 TT |
15805 | static void handle_struct_member_die |
15806 | (struct die_info *child_die, | |
15807 | struct type *type, | |
15808 | struct field_info *fi, | |
15809 | std::vector<struct symbol *> *template_args, | |
15810 | struct dwarf2_cu *cu); | |
15811 | ||
15812 | /* A helper for handle_struct_member_die that handles | |
15813 | DW_TAG_variant_part. */ | |
15814 | ||
15815 | static void | |
15816 | handle_variant_part (struct die_info *die, struct type *type, | |
15817 | struct field_info *fi, | |
15818 | std::vector<struct symbol *> *template_args, | |
15819 | struct dwarf2_cu *cu) | |
15820 | { | |
15821 | variant_part_builder *new_part; | |
15822 | if (fi->current_variant_part == nullptr) | |
15823 | { | |
15824 | fi->variant_parts.emplace_back (); | |
15825 | new_part = &fi->variant_parts.back (); | |
15826 | } | |
15827 | else if (!fi->current_variant_part->processing_variant) | |
15828 | { | |
15829 | complaint (_("nested DW_TAG_variant_part seen " | |
15830 | "- DIE at %s [in module %s]"), | |
15831 | sect_offset_str (die->sect_off), | |
5e22e966 | 15832 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15833 | return; |
15834 | } | |
15835 | else | |
15836 | { | |
15837 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15838 | current.variant_parts.emplace_back (); | |
15839 | new_part = ¤t.variant_parts.back (); | |
15840 | } | |
15841 | ||
15842 | /* When we recurse, we want callees to add to this new variant | |
15843 | part. */ | |
15844 | scoped_restore save_current_variant_part | |
15845 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15846 | ||
15847 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15848 | if (discr == NULL) | |
15849 | { | |
15850 | /* It's a univariant form, an extension we support. */ | |
15851 | } | |
15852 | else if (discr->form_is_ref ()) | |
15853 | { | |
15854 | struct dwarf2_cu *target_cu = cu; | |
15855 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15856 | ||
15857 | new_part->discriminant_offset = target_die->sect_off; | |
15858 | } | |
15859 | else | |
15860 | { | |
15861 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15862 | " - DIE at %s [in module %s]"), | |
15863 | sect_offset_str (die->sect_off), | |
5e22e966 | 15864 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15865 | } |
15866 | ||
15867 | for (die_info *child_die = die->child; | |
15868 | child_die != NULL; | |
15869 | child_die = child_die->sibling) | |
15870 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15871 | } | |
15872 | ||
15873 | /* A helper for handle_struct_member_die that handles | |
15874 | DW_TAG_variant. */ | |
15875 | ||
15876 | static void | |
15877 | handle_variant (struct die_info *die, struct type *type, | |
15878 | struct field_info *fi, | |
15879 | std::vector<struct symbol *> *template_args, | |
15880 | struct dwarf2_cu *cu) | |
15881 | { | |
15882 | if (fi->current_variant_part == nullptr) | |
15883 | { | |
15884 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15885 | "- DIE at %s [in module %s]"), | |
15886 | sect_offset_str (die->sect_off), | |
5e22e966 | 15887 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15888 | return; |
15889 | } | |
15890 | if (fi->current_variant_part->processing_variant) | |
15891 | { | |
15892 | complaint (_("nested DW_TAG_variant seen " | |
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 | ||
15899 | scoped_restore save_processing_variant | |
15900 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15901 | true); | |
15902 | ||
15903 | fi->current_variant_part->variants.emplace_back (); | |
15904 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15905 | variant.first_field = fi->fields.size (); | |
15906 | ||
15907 | /* In a variant we want to get the discriminant and also add a | |
15908 | field for our sole member child. */ | |
15909 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 15910 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
15911 | { |
15912 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 15913 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
15914 | variant.default_branch = true; |
15915 | else | |
9d2246fc | 15916 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
15917 | } |
15918 | else | |
cae21f8e | 15919 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
15920 | |
15921 | for (die_info *variant_child = die->child; | |
15922 | variant_child != NULL; | |
15923 | variant_child = variant_child->sibling) | |
15924 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15925 | ||
15926 | variant.last_field = fi->fields.size (); | |
15927 | } | |
15928 | ||
2ddeaf8a TT |
15929 | /* A helper for process_structure_scope that handles a single member |
15930 | DIE. */ | |
15931 | ||
15932 | static void | |
15933 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15934 | struct field_info *fi, | |
15935 | std::vector<struct symbol *> *template_args, | |
15936 | struct dwarf2_cu *cu) | |
15937 | { | |
15938 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15939 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15940 | { |
15941 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15942 | should be a DW_TAG_member that is a declaration, but | |
15943 | all versions of G++ as of this writing (so through at | |
15944 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15945 | tags for them instead. */ | |
15946 | dwarf2_add_field (fi, child_die, cu); | |
15947 | } | |
15948 | else if (child_die->tag == DW_TAG_subprogram) | |
15949 | { | |
15950 | /* Rust doesn't have member functions in the C++ sense. | |
15951 | However, it does emit ordinary functions as children | |
15952 | of a struct DIE. */ | |
15953 | if (cu->language == language_rust) | |
15954 | read_func_scope (child_die, cu); | |
15955 | else | |
15956 | { | |
15957 | /* C++ member function. */ | |
15958 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15959 | } | |
15960 | } | |
15961 | else if (child_die->tag == DW_TAG_inheritance) | |
15962 | { | |
15963 | /* C++ base class field. */ | |
15964 | dwarf2_add_field (fi, child_die, cu); | |
15965 | } | |
15966 | else if (type_can_define_types (child_die)) | |
15967 | dwarf2_add_type_defn (fi, child_die, cu); | |
15968 | else if (child_die->tag == DW_TAG_template_type_param | |
15969 | || child_die->tag == DW_TAG_template_value_param) | |
15970 | { | |
15971 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15972 | ||
15973 | if (arg != NULL) | |
15974 | template_args->push_back (arg); | |
15975 | } | |
9c6a1327 TT |
15976 | else if (child_die->tag == DW_TAG_variant_part) |
15977 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15978 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15979 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15980 | } |
15981 | ||
c767944b DJ |
15982 | /* Finish creating a structure or union type, including filling in |
15983 | its members and creating a symbol for it. */ | |
15984 | ||
15985 | static void | |
15986 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15987 | { | |
5e22e966 | 15988 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15989 | struct die_info *child_die; |
c767944b DJ |
15990 | struct type *type; |
15991 | ||
15992 | type = get_die_type (die, cu); | |
15993 | if (type == NULL) | |
15994 | type = read_structure_type (die, cu); | |
15995 | ||
3e1d3d8c | 15996 | bool has_template_parameters = false; |
e142c38c | 15997 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15998 | { |
15999 | struct field_info fi; | |
2f4732b0 | 16000 | std::vector<struct symbol *> template_args; |
c906108c | 16001 | |
639d11d3 | 16002 | child_die = die->child; |
c906108c SS |
16003 | |
16004 | while (child_die && child_die->tag) | |
16005 | { | |
2ddeaf8a | 16006 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16007 | child_die = child_die->sibling; |
c906108c SS |
16008 | } |
16009 | ||
34eaf542 | 16010 | /* Attach template arguments to type. */ |
2f4732b0 | 16011 | if (!template_args.empty ()) |
34eaf542 | 16012 | { |
3e1d3d8c | 16013 | has_template_parameters = true; |
34eaf542 | 16014 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16015 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16016 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16017 | = XOBNEWVEC (&objfile->objfile_obstack, |
16018 | struct symbol *, | |
16019 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16020 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16021 | template_args.data (), |
34eaf542 TT |
16022 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16023 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16024 | } |
16025 | ||
c906108c | 16026 | /* Attach fields and member functions to the type. */ |
317f7127 | 16027 | if (fi.nfields () > 0) |
e7c27a73 | 16028 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16029 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16030 | { |
e7c27a73 | 16031 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16032 | |
c5aa993b | 16033 | /* Get the type which refers to the base class (possibly this |
c906108c | 16034 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16035 | class from the DW_AT_containing_type attribute. This use of |
16036 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16037 | |
e142c38c | 16038 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16039 | { |
e7c27a73 | 16040 | struct type *t = die_containing_type (die, cu); |
c906108c | 16041 | |
ae6ae975 | 16042 | set_type_vptr_basetype (type, t); |
c906108c SS |
16043 | if (type == t) |
16044 | { | |
c906108c SS |
16045 | int i; |
16046 | ||
16047 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16048 | for (i = t->num_fields () - 1; |
c906108c SS |
16049 | i >= TYPE_N_BASECLASSES (t); |
16050 | --i) | |
16051 | { | |
0d5cff50 | 16052 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16053 | |
dda83cd7 | 16054 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16055 | { |
ae6ae975 | 16056 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16057 | break; |
16058 | } | |
16059 | } | |
16060 | ||
16061 | /* Complain if virtual function table field not found. */ | |
16062 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16063 | complaint (_("virtual function table pointer " |
3e43a32a | 16064 | "not found when defining class '%s'"), |
7d93a1e0 | 16065 | type->name () ? type->name () : ""); |
c906108c SS |
16066 | } |
16067 | else | |
16068 | { | |
ae6ae975 | 16069 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16070 | } |
16071 | } | |
f6235d4c | 16072 | else if (cu->producer |
61012eef | 16073 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16074 | { |
16075 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16076 | of the containing type, but the vtable pointer is |
16077 | always named __vfp. */ | |
f6235d4c EZ |
16078 | |
16079 | int i; | |
16080 | ||
1f704f76 | 16081 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16082 | i >= TYPE_N_BASECLASSES (type); |
16083 | --i) | |
16084 | { | |
16085 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16086 | { | |
ae6ae975 DE |
16087 | set_type_vptr_fieldno (type, i); |
16088 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16089 | break; |
16090 | } | |
16091 | } | |
16092 | } | |
c906108c | 16093 | } |
98751a41 JK |
16094 | |
16095 | /* Copy fi.typedef_field_list linked list elements content into the | |
16096 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16097 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16098 | { |
be2daae6 | 16099 | int count = fi.typedef_field_list.size (); |
98751a41 | 16100 | |
a0d7a4ff | 16101 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16102 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16103 | = ((struct decl_field *) |
be2daae6 TT |
16104 | TYPE_ALLOC (type, |
16105 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16106 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16107 | |
be2daae6 TT |
16108 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16109 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16110 | } |
c767944b | 16111 | |
883fd55a KS |
16112 | /* Copy fi.nested_types_list linked list elements content into the |
16113 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16114 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16115 | { |
be2daae6 | 16116 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16117 | |
16118 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16119 | TYPE_NESTED_TYPES_ARRAY (type) | |
16120 | = ((struct decl_field *) | |
be2daae6 TT |
16121 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16122 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16123 | |
be2daae6 TT |
16124 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16125 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16126 | } |
c906108c | 16127 | } |
63d06c5c | 16128 | |
bb5ed363 | 16129 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16130 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16131 | cu->rust_unions.push_back (type); | |
57567375 TT |
16132 | else if (cu->language == language_ada) |
16133 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16134 | |
90aeadfc DC |
16135 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16136 | snapshots) has been known to create a die giving a declaration | |
16137 | for a class that has, as a child, a die giving a definition for a | |
16138 | nested class. So we have to process our children even if the | |
16139 | current die is a declaration. Normally, of course, a declaration | |
16140 | won't have any children at all. */ | |
134d01f1 | 16141 | |
ca040673 DE |
16142 | child_die = die->child; |
16143 | ||
90aeadfc DC |
16144 | while (child_die != NULL && child_die->tag) |
16145 | { | |
16146 | if (child_die->tag == DW_TAG_member | |
16147 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16148 | || child_die->tag == DW_TAG_inheritance |
16149 | || child_die->tag == DW_TAG_template_value_param | |
16150 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16151 | { |
90aeadfc | 16152 | /* Do nothing. */ |
134d01f1 | 16153 | } |
90aeadfc DC |
16154 | else |
16155 | process_die (child_die, cu); | |
134d01f1 | 16156 | |
436c571c | 16157 | child_die = child_die->sibling; |
134d01f1 DJ |
16158 | } |
16159 | ||
fa4028e9 JB |
16160 | /* Do not consider external references. According to the DWARF standard, |
16161 | these DIEs are identified by the fact that they have no byte_size | |
16162 | attribute, and a declaration attribute. */ | |
16163 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16164 | || !die_is_declaration (die, cu) |
16165 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16166 | { |
16167 | struct symbol *sym = new_symbol (die, type, cu); | |
16168 | ||
16169 | if (has_template_parameters) | |
16170 | { | |
a776957c TT |
16171 | struct symtab *symtab; |
16172 | if (sym != nullptr) | |
16173 | symtab = symbol_symtab (sym); | |
16174 | else if (cu->line_header != nullptr) | |
16175 | { | |
16176 | /* Any related symtab will do. */ | |
16177 | symtab | |
7ba99d21 | 16178 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16179 | } |
16180 | else | |
16181 | { | |
16182 | symtab = nullptr; | |
16183 | complaint (_("could not find suitable " | |
16184 | "symtab for template parameter" | |
16185 | " - DIE at %s [in module %s]"), | |
16186 | sect_offset_str (die->sect_off), | |
16187 | objfile_name (objfile)); | |
16188 | } | |
16189 | ||
16190 | if (symtab != nullptr) | |
16191 | { | |
16192 | /* Make sure that the symtab is set on the new symbols. | |
16193 | Even though they don't appear in this symtab directly, | |
16194 | other parts of gdb assume that symbols do, and this is | |
16195 | reasonably true. */ | |
16196 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16197 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16198 | } | |
3e1d3d8c TT |
16199 | } |
16200 | } | |
134d01f1 DJ |
16201 | } |
16202 | ||
ed6acedd TT |
16203 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16204 | type, update TYPE using some information only available in DIE's | |
16205 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16206 | |
16207 | static void | |
16208 | update_enumeration_type_from_children (struct die_info *die, | |
16209 | struct type *type, | |
16210 | struct dwarf2_cu *cu) | |
16211 | { | |
60f7655a | 16212 | struct die_info *child_die; |
55426c9d JB |
16213 | int unsigned_enum = 1; |
16214 | int flag_enum = 1; | |
55426c9d | 16215 | |
8268c778 | 16216 | auto_obstack obstack; |
ed6acedd | 16217 | std::vector<struct field> fields; |
55426c9d | 16218 | |
60f7655a DE |
16219 | for (child_die = die->child; |
16220 | child_die != NULL && child_die->tag; | |
436c571c | 16221 | child_die = child_die->sibling) |
55426c9d JB |
16222 | { |
16223 | struct attribute *attr; | |
16224 | LONGEST value; | |
16225 | const gdb_byte *bytes; | |
16226 | struct dwarf2_locexpr_baton *baton; | |
16227 | const char *name; | |
60f7655a | 16228 | |
55426c9d JB |
16229 | if (child_die->tag != DW_TAG_enumerator) |
16230 | continue; | |
16231 | ||
16232 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16233 | if (attr == NULL) | |
16234 | continue; | |
16235 | ||
16236 | name = dwarf2_name (child_die, cu); | |
16237 | if (name == NULL) | |
16238 | name = "<anonymous enumerator>"; | |
16239 | ||
16240 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16241 | &value, &bytes, &baton); | |
16242 | if (value < 0) | |
16243 | { | |
16244 | unsigned_enum = 0; | |
16245 | flag_enum = 0; | |
16246 | } | |
55426c9d | 16247 | else |
edd45eb0 SM |
16248 | { |
16249 | if (count_one_bits_ll (value) >= 2) | |
16250 | flag_enum = 0; | |
edd45eb0 | 16251 | } |
55426c9d | 16252 | |
ed6acedd TT |
16253 | fields.emplace_back (); |
16254 | struct field &field = fields.back (); | |
16255 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16256 | SET_FIELD_ENUMVAL (field, value); | |
16257 | } | |
16258 | ||
16259 | if (!fields.empty ()) | |
16260 | { | |
5e33d5f4 | 16261 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16262 | type->set_fields |
16263 | ((struct field *) | |
16264 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16265 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16266 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16267 | } |
16268 | ||
16269 | if (unsigned_enum) | |
653223d3 SM |
16270 | type->set_is_unsigned (true); |
16271 | ||
55426c9d | 16272 | if (flag_enum) |
9902b327 | 16273 | type->set_is_flag_enum (true); |
55426c9d JB |
16274 | } |
16275 | ||
134d01f1 DJ |
16276 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16277 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16278 | |
f792889a | 16279 | static struct type * |
134d01f1 | 16280 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16281 | { |
5e22e966 | 16282 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16283 | struct type *type; |
c906108c | 16284 | struct attribute *attr; |
0114d602 | 16285 | const char *name; |
134d01f1 | 16286 | |
348e048f DE |
16287 | /* If the definition of this type lives in .debug_types, read that type. |
16288 | Don't follow DW_AT_specification though, that will take us back up | |
16289 | the chain and we want to go down. */ | |
052c8bb8 | 16290 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16291 | if (attr != nullptr) |
348e048f | 16292 | { |
ac9ec31b | 16293 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16294 | |
ac9ec31b | 16295 | /* The type's CU may not be the same as CU. |
02142a6c | 16296 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16297 | return set_die_type (die, type, cu); |
16298 | } | |
16299 | ||
c906108c SS |
16300 | type = alloc_type (objfile); |
16301 | ||
67607e24 | 16302 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16303 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16304 | if (name != NULL) |
d0e39ea2 | 16305 | type->set_name (name); |
c906108c | 16306 | |
0626fc76 TT |
16307 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16308 | if (attr != NULL) | |
16309 | { | |
16310 | struct type *underlying_type = die_type (die, cu); | |
16311 | ||
16312 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16313 | } | |
16314 | ||
e142c38c | 16315 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16316 | if (attr != nullptr) |
c906108c | 16317 | { |
529908cb | 16318 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16319 | } |
16320 | else | |
16321 | { | |
16322 | TYPE_LENGTH (type) = 0; | |
16323 | } | |
16324 | ||
2b4424c3 TT |
16325 | maybe_set_alignment (cu, die, type); |
16326 | ||
137033e9 JB |
16327 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16328 | declared as private in the package spec, and then defined only | |
16329 | inside the package body. Such types are known as Taft Amendment | |
16330 | Types. When another package uses such a type, an incomplete DIE | |
16331 | may be generated by the compiler. */ | |
02eb380e | 16332 | if (die_is_declaration (die, cu)) |
b4b73759 | 16333 | type->set_is_stub (true); |
02eb380e | 16334 | |
0626fc76 TT |
16335 | /* If this type has an underlying type that is not a stub, then we |
16336 | may use its attributes. We always use the "unsigned" attribute | |
16337 | in this situation, because ordinarily we guess whether the type | |
16338 | is unsigned -- but the guess can be wrong and the underlying type | |
16339 | can tell us the reality. However, we defer to a local size | |
16340 | attribute if one exists, because this lets the compiler override | |
16341 | the underlying type if needed. */ | |
e46d3488 | 16342 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16343 | { |
9e7c9a03 HD |
16344 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16345 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16346 | |
16347 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16348 | ||
0626fc76 | 16349 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16350 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16351 | |
2b4424c3 | 16352 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16353 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16354 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16355 | } |
16356 | ||
aa70e35c | 16357 | type->set_is_declared_class (dwarf2_flag_true_p (die, DW_AT_enum_class, cu)); |
3d567982 | 16358 | |
ed6acedd TT |
16359 | set_die_type (die, type, cu); |
16360 | ||
16361 | /* Finish the creation of this type by using the enum's children. | |
16362 | Note that, as usual, this must come after set_die_type to avoid | |
16363 | infinite recursion when trying to compute the names of the | |
16364 | enumerators. */ | |
16365 | update_enumeration_type_from_children (die, type, cu); | |
16366 | ||
16367 | return type; | |
134d01f1 DJ |
16368 | } |
16369 | ||
16370 | /* Given a pointer to a die which begins an enumeration, process all | |
16371 | the dies that define the members of the enumeration, and create the | |
16372 | symbol for the enumeration type. | |
16373 | ||
16374 | NOTE: We reverse the order of the element list. */ | |
16375 | ||
16376 | static void | |
16377 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16378 | { | |
f792889a | 16379 | struct type *this_type; |
134d01f1 | 16380 | |
f792889a DJ |
16381 | this_type = get_die_type (die, cu); |
16382 | if (this_type == NULL) | |
16383 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16384 | |
639d11d3 | 16385 | if (die->child != NULL) |
c906108c | 16386 | { |
9dc481d3 | 16387 | struct die_info *child_die; |
15d034d0 | 16388 | const char *name; |
9dc481d3 | 16389 | |
639d11d3 | 16390 | child_die = die->child; |
c906108c SS |
16391 | while (child_die && child_die->tag) |
16392 | { | |
16393 | if (child_die->tag != DW_TAG_enumerator) | |
16394 | { | |
e7c27a73 | 16395 | process_die (child_die, cu); |
c906108c SS |
16396 | } |
16397 | else | |
16398 | { | |
39cbfefa DJ |
16399 | name = dwarf2_name (child_die, cu); |
16400 | if (name) | |
ed6acedd | 16401 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16402 | } |
16403 | ||
436c571c | 16404 | child_die = child_die->sibling; |
c906108c | 16405 | } |
c906108c | 16406 | } |
134d01f1 | 16407 | |
6c83ed52 TT |
16408 | /* If we are reading an enum from a .debug_types unit, and the enum |
16409 | is a declaration, and the enum is not the signatured type in the | |
16410 | unit, then we do not want to add a symbol for it. Adding a | |
16411 | symbol would in some cases obscure the true definition of the | |
16412 | enum, giving users an incomplete type when the definition is | |
16413 | actually available. Note that we do not want to do this for all | |
16414 | enums which are just declarations, because C++0x allows forward | |
16415 | enum declarations. */ | |
3019eac3 | 16416 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16417 | && die_is_declaration (die, cu)) |
16418 | { | |
52dc124a | 16419 | struct signatured_type *sig_type; |
6c83ed52 | 16420 | |
c0f78cd4 | 16421 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16422 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16423 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16424 | return; |
16425 | } | |
16426 | ||
f792889a | 16427 | new_symbol (die, this_type, cu); |
c906108c SS |
16428 | } |
16429 | ||
57567375 TT |
16430 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16431 | expression for an index type and finds the corresponding field | |
16432 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16433 | and updates *FIELD, false if it fails to recognize an | |
16434 | expression. */ | |
16435 | ||
16436 | static bool | |
16437 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16438 | int *bounds_offset, struct field *field, | |
16439 | struct dwarf2_cu *cu) | |
16440 | { | |
16441 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16442 | if (attr == nullptr || !attr->form_is_block ()) | |
16443 | return false; | |
16444 | ||
16445 | const struct dwarf_block *block = attr->as_block (); | |
16446 | const gdb_byte *start = block->data; | |
16447 | const gdb_byte *end = block->data + block->size; | |
16448 | ||
16449 | /* The expression to recognize generally looks like: | |
16450 | ||
16451 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16452 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16453 | ||
16454 | However, the second "plus_uconst" may be missing: | |
16455 | ||
16456 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16457 | DW_OP_deref_size: 4) | |
16458 | ||
16459 | This happens when the field is at the start of the structure. | |
16460 | ||
16461 | Also, the final deref may not be sized: | |
16462 | ||
16463 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16464 | DW_OP_deref) | |
16465 | ||
16466 | This happens when the size of the index type happens to be the | |
16467 | same as the architecture's word size. This can occur with or | |
16468 | without the second plus_uconst. */ | |
16469 | ||
16470 | if (end - start < 2) | |
16471 | return false; | |
16472 | if (*start++ != DW_OP_push_object_address) | |
16473 | return false; | |
16474 | if (*start++ != DW_OP_plus_uconst) | |
16475 | return false; | |
16476 | ||
16477 | uint64_t this_bound_off; | |
16478 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16479 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16480 | return false; | |
16481 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16482 | is consistent among all bounds. */ | |
16483 | if (*bounds_offset == -1) | |
16484 | *bounds_offset = this_bound_off; | |
16485 | else if (*bounds_offset != this_bound_off) | |
16486 | return false; | |
16487 | ||
16488 | if (start == end || *start++ != DW_OP_deref) | |
16489 | return false; | |
16490 | ||
16491 | int offset = 0; | |
16492 | if (start ==end) | |
16493 | return false; | |
16494 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16495 | { | |
16496 | /* This means an offset of 0. */ | |
16497 | } | |
16498 | else if (*start++ != DW_OP_plus_uconst) | |
16499 | return false; | |
16500 | else | |
16501 | { | |
16502 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16503 | uint64_t val; | |
16504 | start = gdb_read_uleb128 (start, end, &val); | |
16505 | if (start == nullptr) | |
16506 | return false; | |
16507 | if ((int) val != val) | |
16508 | return false; | |
16509 | offset = val; | |
16510 | } | |
16511 | ||
16512 | if (start == end) | |
16513 | return false; | |
16514 | ||
16515 | uint64_t size; | |
16516 | if (*start == DW_OP_deref_size) | |
16517 | { | |
16518 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16519 | if (start == nullptr) | |
16520 | return false; | |
16521 | } | |
16522 | else if (*start == DW_OP_deref) | |
16523 | { | |
16524 | size = cu->header.addr_size; | |
16525 | ++start; | |
16526 | } | |
16527 | else | |
16528 | return false; | |
16529 | ||
16530 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16531 | if (size != TYPE_LENGTH (field->type ())) | |
16532 | FIELD_BITSIZE (*field) = 8 * size; | |
16533 | ||
16534 | return true; | |
16535 | } | |
16536 | ||
16537 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16538 | some kinds of Ada arrays: | |
16539 | ||
16540 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16541 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16542 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16543 | (DW_OP_push_object_address; DW_OP_deref) | |
16544 | <11e3> DW_AT_type : <0x1173> | |
16545 | <11e7> DW_AT_sibling : <0x1201> | |
16546 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16547 | <11ec> DW_AT_type : <0x1206> | |
16548 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16549 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16550 | DW_OP_deref_size: 4) | |
16551 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16552 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16553 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16554 | ||
16555 | This actually represents a "thick pointer", which is a structure | |
16556 | with two elements: one that is a pointer to the array data, and one | |
16557 | that is a pointer to another structure; this second structure holds | |
16558 | the array bounds. | |
16559 | ||
16560 | This returns a new type on success, or nullptr if this didn't | |
16561 | recognize the type. */ | |
16562 | ||
16563 | static struct type * | |
16564 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16565 | struct type *type) | |
16566 | { | |
16567 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16568 | /* So far we've only seen this with block form. */ | |
16569 | if (attr == nullptr || !attr->form_is_block ()) | |
16570 | return nullptr; | |
16571 | ||
16572 | /* Note that this will fail if the structure layout is changed by | |
16573 | the compiler. However, we have no good way to recognize some | |
16574 | other layout, because we don't know what expression the compiler | |
16575 | might choose to emit should this happen. */ | |
16576 | struct dwarf_block *blk = attr->as_block (); | |
16577 | if (blk->size != 2 | |
16578 | || blk->data[0] != DW_OP_push_object_address | |
16579 | || blk->data[1] != DW_OP_deref) | |
16580 | return nullptr; | |
16581 | ||
16582 | int bounds_offset = -1; | |
16583 | int max_align = -1; | |
16584 | std::vector<struct field> range_fields; | |
16585 | for (struct die_info *child_die = die->child; | |
16586 | child_die; | |
16587 | child_die = child_die->sibling) | |
16588 | { | |
16589 | if (child_die->tag == DW_TAG_subrange_type) | |
16590 | { | |
16591 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16592 | ||
16593 | int this_align = type_align (underlying); | |
16594 | if (this_align > max_align) | |
16595 | max_align = this_align; | |
16596 | ||
16597 | range_fields.emplace_back (); | |
16598 | range_fields.emplace_back (); | |
16599 | ||
16600 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16601 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16602 | ||
16603 | lower.set_type (underlying); | |
16604 | FIELD_ARTIFICIAL (lower) = 1; | |
16605 | ||
16606 | upper.set_type (underlying); | |
16607 | FIELD_ARTIFICIAL (upper) = 1; | |
16608 | ||
16609 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16610 | &bounds_offset, &lower, cu) | |
16611 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16612 | &bounds_offset, &upper, cu)) | |
16613 | return nullptr; | |
16614 | } | |
16615 | } | |
16616 | ||
16617 | /* This shouldn't really happen, but double-check that we found | |
16618 | where the bounds are stored. */ | |
16619 | if (bounds_offset == -1) | |
16620 | return nullptr; | |
16621 | ||
16622 | struct objfile *objfile = cu->per_objfile->objfile; | |
16623 | for (int i = 0; i < range_fields.size (); i += 2) | |
16624 | { | |
16625 | char name[20]; | |
16626 | ||
16627 | /* Set the name of each field in the bounds. */ | |
16628 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
16629 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
16630 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
16631 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
16632 | } | |
16633 | ||
16634 | struct type *bounds = alloc_type (objfile); | |
16635 | bounds->set_code (TYPE_CODE_STRUCT); | |
16636 | ||
16637 | bounds->set_num_fields (range_fields.size ()); | |
16638 | bounds->set_fields | |
16639 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
16640 | * sizeof (struct field)))); | |
16641 | memcpy (bounds->fields (), range_fields.data (), | |
16642 | bounds->num_fields () * sizeof (struct field)); | |
16643 | ||
16644 | int last_fieldno = range_fields.size () - 1; | |
16645 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
16646 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
16647 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
16648 | ||
16649 | /* Rewrite the existing array type in place. Specifically, we | |
16650 | remove any dynamic properties we might have read, and we replace | |
16651 | the index types. */ | |
16652 | struct type *iter = type; | |
16653 | for (int i = 0; i < range_fields.size (); i += 2) | |
16654 | { | |
16655 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
16656 | iter->main_type->dyn_prop_list = nullptr; | |
16657 | iter->set_index_type | |
16658 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
16659 | iter = TYPE_TARGET_TYPE (iter); | |
16660 | } | |
16661 | ||
16662 | struct type *result = alloc_type (objfile); | |
16663 | result->set_code (TYPE_CODE_STRUCT); | |
16664 | ||
16665 | result->set_num_fields (2); | |
16666 | result->set_fields | |
16667 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
16668 | * sizeof (struct field)))); | |
16669 | ||
16670 | /* The names are chosen to coincide with what the compiler does with | |
16671 | -fgnat-encodings=all, which the Ada code in gdb already | |
16672 | understands. */ | |
16673 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
16674 | result->field (0).set_type (lookup_pointer_type (type)); | |
16675 | ||
16676 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
16677 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
16678 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
16679 | ||
16680 | result->set_name (type->name ()); | |
16681 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
16682 | + TYPE_LENGTH (result->field (1).type ())); | |
16683 | ||
16684 | return result; | |
16685 | } | |
16686 | ||
c906108c SS |
16687 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
16688 | the DIE's type field. For now, this only handles one dimensional | |
16689 | arrays. */ | |
16690 | ||
f792889a | 16691 | static struct type * |
e7c27a73 | 16692 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16693 | { |
5e22e966 | 16694 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16695 | struct die_info *child_die; |
7e314c57 | 16696 | struct type *type; |
c906108c | 16697 | struct type *element_type, *range_type, *index_type; |
c906108c | 16698 | struct attribute *attr; |
15d034d0 | 16699 | const char *name; |
a405673c | 16700 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16701 | unsigned int bit_stride = 0; |
c906108c | 16702 | |
e7c27a73 | 16703 | element_type = die_type (die, cu); |
c906108c | 16704 | |
7e314c57 JK |
16705 | /* The die_type call above may have already set the type for this DIE. */ |
16706 | type = get_die_type (die, cu); | |
16707 | if (type) | |
16708 | return type; | |
16709 | ||
dc53a7ad JB |
16710 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16711 | if (attr != NULL) | |
a405673c JB |
16712 | { |
16713 | int stride_ok; | |
293e7e51 | 16714 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16715 | |
16716 | byte_stride_prop | |
16717 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16718 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16719 | prop_type); | |
a405673c JB |
16720 | if (!stride_ok) |
16721 | { | |
b98664d3 | 16722 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16723 | " - DIE at %s [in module %s]"), |
16724 | sect_offset_str (die->sect_off), | |
5e22e966 | 16725 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16726 | /* Ignore this attribute. We will likely not be able to print |
16727 | arrays of this type correctly, but there is little we can do | |
16728 | to help if we cannot read the attribute's value. */ | |
16729 | byte_stride_prop = NULL; | |
16730 | } | |
16731 | } | |
dc53a7ad JB |
16732 | |
16733 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16734 | if (attr != NULL) | |
529908cb | 16735 | bit_stride = attr->constant_value (0); |
dc53a7ad | 16736 | |
c906108c SS |
16737 | /* Irix 6.2 native cc creates array types without children for |
16738 | arrays with unspecified length. */ | |
639d11d3 | 16739 | if (die->child == NULL) |
c906108c | 16740 | { |
46bf5051 | 16741 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16742 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16743 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16744 | byte_stride_prop, bit_stride); |
f792889a | 16745 | return set_die_type (die, type, cu); |
c906108c SS |
16746 | } |
16747 | ||
791afaa2 | 16748 | std::vector<struct type *> range_types; |
639d11d3 | 16749 | child_die = die->child; |
c906108c SS |
16750 | while (child_die && child_die->tag) |
16751 | { | |
16752 | if (child_die->tag == DW_TAG_subrange_type) | |
16753 | { | |
f792889a | 16754 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16755 | |
dda83cd7 SM |
16756 | if (child_type != NULL) |
16757 | { | |
0963b4bd | 16758 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 16759 | array type creation. */ |
791afaa2 | 16760 | range_types.push_back (child_type); |
dda83cd7 | 16761 | } |
c906108c | 16762 | } |
436c571c | 16763 | child_die = child_die->sibling; |
c906108c SS |
16764 | } |
16765 | ||
cf2b2075 TV |
16766 | if (range_types.empty ()) |
16767 | { | |
16768 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
16769 | sect_offset_str (die->sect_off), | |
16770 | objfile_name (cu->per_objfile->objfile)); | |
16771 | return NULL; | |
16772 | } | |
16773 | ||
c906108c SS |
16774 | /* Dwarf2 dimensions are output from left to right, create the |
16775 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16776 | |
c906108c | 16777 | type = element_type; |
7ca2d3a3 DL |
16778 | |
16779 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16780 | { | |
16781 | int i = 0; | |
9a619af0 | 16782 | |
791afaa2 | 16783 | while (i < range_types.size ()) |
10f6a3ad TT |
16784 | { |
16785 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
16786 | byte_stride_prop, bit_stride); | |
16787 | bit_stride = 0; | |
16788 | byte_stride_prop = nullptr; | |
16789 | } | |
7ca2d3a3 DL |
16790 | } |
16791 | else | |
16792 | { | |
791afaa2 | 16793 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16794 | while (ndim-- > 0) |
10f6a3ad TT |
16795 | { |
16796 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
16797 | byte_stride_prop, bit_stride); | |
16798 | bit_stride = 0; | |
16799 | byte_stride_prop = nullptr; | |
16800 | } | |
7ca2d3a3 | 16801 | } |
c906108c | 16802 | |
cf2b2075 TV |
16803 | gdb_assert (type != element_type); |
16804 | ||
f5f8a009 EZ |
16805 | /* Understand Dwarf2 support for vector types (like they occur on |
16806 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16807 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16808 | custom vendor extension. The main difference between a regular | |
16809 | array and the vector variant is that vectors are passed by value | |
16810 | to functions. */ | |
e142c38c | 16811 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16812 | if (attr != nullptr) |
ea37ba09 | 16813 | make_vector_type (type); |
f5f8a009 | 16814 | |
dbc98a8b KW |
16815 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16816 | implementation may choose to implement triple vectors using this | |
16817 | attribute. */ | |
16818 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 16819 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 16820 | { |
529908cb TT |
16821 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
16822 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 16823 | else |
b98664d3 | 16824 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16825 | "than the total size of elements")); |
dbc98a8b KW |
16826 | } |
16827 | ||
39cbfefa DJ |
16828 | name = dwarf2_name (die, cu); |
16829 | if (name) | |
d0e39ea2 | 16830 | type->set_name (name); |
6e70227d | 16831 | |
2b4424c3 TT |
16832 | maybe_set_alignment (cu, die, type); |
16833 | ||
57567375 TT |
16834 | struct type *replacement_type = nullptr; |
16835 | if (cu->language == language_ada) | |
16836 | { | |
16837 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
16838 | if (replacement_type != nullptr) | |
16839 | type = replacement_type; | |
16840 | } | |
16841 | ||
0963b4bd | 16842 | /* Install the type in the die. */ |
57567375 | 16843 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
16844 | |
16845 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16846 | set_descriptive_type (type, die, cu); |
16847 | ||
7e314c57 | 16848 | return type; |
c906108c SS |
16849 | } |
16850 | ||
7ca2d3a3 | 16851 | static enum dwarf_array_dim_ordering |
6e70227d | 16852 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16853 | { |
16854 | struct attribute *attr; | |
16855 | ||
16856 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16857 | ||
435d3d88 | 16858 | if (attr != nullptr) |
1bc397c5 TT |
16859 | { |
16860 | LONGEST val = attr->constant_value (-1); | |
16861 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
16862 | return (enum dwarf_array_dim_ordering) val; | |
16863 | } | |
7ca2d3a3 | 16864 | |
0963b4bd MS |
16865 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16866 | opposite order to the dwarf2 specification, but data is still | |
16867 | laid out as per normal fortran. | |
7ca2d3a3 | 16868 | |
0963b4bd MS |
16869 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16870 | version checking. */ | |
7ca2d3a3 | 16871 | |
905e0470 PM |
16872 | if (cu->language == language_fortran |
16873 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16874 | { |
16875 | return DW_ORD_row_major; | |
16876 | } | |
16877 | ||
3a3440fb | 16878 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
16879 | { |
16880 | case array_column_major: | |
16881 | return DW_ORD_col_major; | |
16882 | case array_row_major: | |
16883 | default: | |
16884 | return DW_ORD_row_major; | |
16885 | }; | |
16886 | } | |
16887 | ||
72019c9c | 16888 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16889 | the DIE's type field. */ |
72019c9c | 16890 | |
f792889a | 16891 | static struct type * |
72019c9c GM |
16892 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16893 | { | |
7e314c57 JK |
16894 | struct type *domain_type, *set_type; |
16895 | struct attribute *attr; | |
f792889a | 16896 | |
7e314c57 JK |
16897 | domain_type = die_type (die, cu); |
16898 | ||
16899 | /* The die_type call above may have already set the type for this DIE. */ | |
16900 | set_type = get_die_type (die, cu); | |
16901 | if (set_type) | |
16902 | return set_type; | |
16903 | ||
16904 | set_type = create_set_type (NULL, domain_type); | |
16905 | ||
16906 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
16907 | if (attr != nullptr && attr->form_is_unsigned ()) |
16908 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 16909 | |
2b4424c3 TT |
16910 | maybe_set_alignment (cu, die, set_type); |
16911 | ||
f792889a | 16912 | return set_die_type (die, set_type, cu); |
72019c9c | 16913 | } |
7ca2d3a3 | 16914 | |
0971de02 TT |
16915 | /* A helper for read_common_block that creates a locexpr baton. |
16916 | SYM is the symbol which we are marking as computed. | |
16917 | COMMON_DIE is the DIE for the common block. | |
16918 | COMMON_LOC is the location expression attribute for the common | |
16919 | block itself. | |
16920 | MEMBER_LOC is the location expression attribute for the particular | |
16921 | member of the common block that we are processing. | |
16922 | CU is the CU from which the above come. */ | |
16923 | ||
16924 | static void | |
16925 | mark_common_block_symbol_computed (struct symbol *sym, | |
16926 | struct die_info *common_die, | |
16927 | struct attribute *common_loc, | |
16928 | struct attribute *member_loc, | |
16929 | struct dwarf2_cu *cu) | |
16930 | { | |
5e22e966 | 16931 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16932 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16933 | struct dwarf2_locexpr_baton *baton; |
16934 | gdb_byte *ptr; | |
16935 | unsigned int cu_off; | |
08feed99 | 16936 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16937 | LONGEST offset = 0; |
16938 | ||
16939 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16940 | gdb_assert (common_loc->form_is_block ()); |
16941 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16942 | || member_loc->form_is_constant ()); |
0971de02 | 16943 | |
8d749320 | 16944 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16945 | baton->per_objfile = per_objfile; |
0971de02 TT |
16946 | baton->per_cu = cu->per_cu; |
16947 | gdb_assert (baton->per_cu); | |
16948 | ||
16949 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16950 | ||
cd6c91b4 | 16951 | if (member_loc->form_is_constant ()) |
0971de02 | 16952 | { |
0826b30a | 16953 | offset = member_loc->constant_value (0); |
0971de02 TT |
16954 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16955 | } | |
16956 | else | |
9d2246fc | 16957 | baton->size += member_loc->as_block ()->size; |
0971de02 | 16958 | |
224c3ddb | 16959 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16960 | baton->data = ptr; |
16961 | ||
16962 | *ptr++ = DW_OP_call4; | |
9c541725 | 16963 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16964 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16965 | ptr += 4; | |
16966 | ||
cd6c91b4 | 16967 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16968 | { |
16969 | *ptr++ = DW_OP_addr; | |
16970 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16971 | ptr += cu->header.addr_size; | |
16972 | } | |
16973 | else | |
16974 | { | |
16975 | /* We have to copy the data here, because DW_OP_call4 will only | |
16976 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
16977 | struct dwarf_block *block = member_loc->as_block (); |
16978 | memcpy (ptr, block->data, block->size); | |
16979 | ptr += block->size; | |
0971de02 TT |
16980 | } |
16981 | ||
16982 | *ptr++ = DW_OP_plus; | |
16983 | gdb_assert (ptr - baton->data == baton->size); | |
16984 | ||
0971de02 | 16985 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16986 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16987 | } |
16988 | ||
4357ac6c TT |
16989 | /* Create appropriate locally-scoped variables for all the |
16990 | DW_TAG_common_block entries. Also create a struct common_block | |
16991 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16992 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16993 | variable names. */ |
c906108c SS |
16994 | |
16995 | static void | |
e7c27a73 | 16996 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16997 | { |
0971de02 TT |
16998 | struct attribute *attr; |
16999 | ||
17000 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17001 | if (attr != nullptr) |
0971de02 TT |
17002 | { |
17003 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17004 | if (attr->form_is_block ()) |
dda83cd7 | 17005 | { |
0971de02 | 17006 | /* Ok. */ |
dda83cd7 | 17007 | } |
cd6c91b4 | 17008 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17009 | { |
0971de02 TT |
17010 | dwarf2_complex_location_expr_complaint (); |
17011 | attr = NULL; | |
dda83cd7 | 17012 | } |
0971de02 | 17013 | else |
dda83cd7 | 17014 | { |
0971de02 TT |
17015 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17016 | "common block member"); | |
17017 | attr = NULL; | |
dda83cd7 | 17018 | } |
0971de02 TT |
17019 | } |
17020 | ||
639d11d3 | 17021 | if (die->child != NULL) |
c906108c | 17022 | { |
5e22e966 | 17023 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17024 | struct die_info *child_die; |
17025 | size_t n_entries = 0, size; | |
17026 | struct common_block *common_block; | |
17027 | struct symbol *sym; | |
74ac6d43 | 17028 | |
4357ac6c TT |
17029 | for (child_die = die->child; |
17030 | child_die && child_die->tag; | |
436c571c | 17031 | child_die = child_die->sibling) |
4357ac6c TT |
17032 | ++n_entries; |
17033 | ||
17034 | size = (sizeof (struct common_block) | |
17035 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17036 | common_block |
17037 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17038 | size); | |
4357ac6c TT |
17039 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17040 | common_block->n_entries = 0; | |
17041 | ||
17042 | for (child_die = die->child; | |
17043 | child_die && child_die->tag; | |
436c571c | 17044 | child_die = child_die->sibling) |
4357ac6c TT |
17045 | { |
17046 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17047 | symbol scope. */ | |
e7c27a73 | 17048 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17049 | if (sym != NULL) |
17050 | { | |
17051 | struct attribute *member_loc; | |
17052 | ||
17053 | common_block->contents[common_block->n_entries++] = sym; | |
17054 | ||
17055 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17056 | cu); | |
17057 | if (member_loc) | |
17058 | { | |
17059 | /* GDB has handled this for a long time, but it is | |
17060 | not specified by DWARF. It seems to have been | |
17061 | emitted by gfortran at least as recently as: | |
17062 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17063 | complaint (_("Variable in common block has " |
0971de02 | 17064 | "DW_AT_data_member_location " |
9d8780f0 SM |
17065 | "- DIE at %s [in module %s]"), |
17066 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17067 | objfile_name (objfile)); |
0971de02 | 17068 | |
cd6c91b4 | 17069 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17070 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17071 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17072 | || member_loc->form_is_block ()) |
0971de02 | 17073 | { |
435d3d88 | 17074 | if (attr != nullptr) |
0971de02 TT |
17075 | mark_common_block_symbol_computed (sym, die, attr, |
17076 | member_loc, cu); | |
17077 | } | |
17078 | else | |
17079 | dwarf2_complex_location_expr_complaint (); | |
17080 | } | |
17081 | } | |
c906108c | 17082 | } |
4357ac6c TT |
17083 | |
17084 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17085 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17086 | } |
17087 | } | |
17088 | ||
0114d602 | 17089 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17090 | |
0114d602 DJ |
17091 | static struct type * |
17092 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17093 | { |
5e22e966 | 17094 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17095 | const char *previous_prefix, *name; |
9219021c | 17096 | int is_anonymous; |
0114d602 DJ |
17097 | struct type *type; |
17098 | ||
17099 | /* For extensions, reuse the type of the original namespace. */ | |
17100 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17101 | { | |
17102 | struct die_info *ext_die; | |
17103 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17104 | |
0114d602 DJ |
17105 | ext_die = dwarf2_extension (die, &ext_cu); |
17106 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17107 | |
17108 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17109 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17110 | return set_die_type (die, type, cu); |
17111 | } | |
9219021c | 17112 | |
e142c38c | 17113 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17114 | |
17115 | /* Now build the name of the current namespace. */ | |
17116 | ||
0114d602 DJ |
17117 | previous_prefix = determine_prefix (die, cu); |
17118 | if (previous_prefix[0] != '\0') | |
17119 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17120 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17121 | |
17122 | /* Create the type. */ | |
19f392bc | 17123 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17124 | |
60531b24 | 17125 | return set_die_type (die, type, cu); |
0114d602 DJ |
17126 | } |
17127 | ||
22cee43f | 17128 | /* Read a namespace scope. */ |
0114d602 DJ |
17129 | |
17130 | static void | |
17131 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17132 | { | |
5e22e966 | 17133 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17134 | int is_anonymous; |
9219021c | 17135 | |
5c4e30ca DC |
17136 | /* Add a symbol associated to this if we haven't seen the namespace |
17137 | before. Also, add a using directive if it's an anonymous | |
17138 | namespace. */ | |
9219021c | 17139 | |
f2f0e013 | 17140 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17141 | { |
17142 | struct type *type; | |
17143 | ||
0114d602 | 17144 | type = read_type_die (die, cu); |
e7c27a73 | 17145 | new_symbol (die, type, cu); |
5c4e30ca | 17146 | |
e8e80198 | 17147 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17148 | if (is_anonymous) |
0114d602 DJ |
17149 | { |
17150 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17151 | |
eb1e02fd | 17152 | std::vector<const char *> excludes; |
804d2729 | 17153 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17154 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17155 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17156 | } |
5c4e30ca | 17157 | } |
9219021c | 17158 | |
639d11d3 | 17159 | if (die->child != NULL) |
d9fa45fe | 17160 | { |
639d11d3 | 17161 | struct die_info *child_die = die->child; |
6e70227d | 17162 | |
d9fa45fe DC |
17163 | while (child_die && child_die->tag) |
17164 | { | |
e7c27a73 | 17165 | process_die (child_die, cu); |
436c571c | 17166 | child_die = child_die->sibling; |
d9fa45fe DC |
17167 | } |
17168 | } | |
38d518c9 EZ |
17169 | } |
17170 | ||
f55ee35c JK |
17171 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17172 | imported module. Still we need that type as local Fortran "use ... only" | |
17173 | declaration imports depend on the created type in determine_prefix. */ | |
17174 | ||
17175 | static struct type * | |
17176 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17177 | { | |
5e22e966 | 17178 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17179 | const char *module_name; |
f55ee35c JK |
17180 | struct type *type; |
17181 | ||
17182 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17183 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17184 | |
f55ee35c JK |
17185 | return set_die_type (die, type, cu); |
17186 | } | |
17187 | ||
5d7cb8df JK |
17188 | /* Read a Fortran module. */ |
17189 | ||
17190 | static void | |
17191 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17192 | { | |
17193 | struct die_info *child_die = die->child; | |
530e8392 KB |
17194 | struct type *type; |
17195 | ||
17196 | type = read_type_die (die, cu); | |
17197 | new_symbol (die, type, cu); | |
5d7cb8df | 17198 | |
5d7cb8df JK |
17199 | while (child_die && child_die->tag) |
17200 | { | |
17201 | process_die (child_die, cu); | |
436c571c | 17202 | child_die = child_die->sibling; |
5d7cb8df JK |
17203 | } |
17204 | } | |
17205 | ||
38d518c9 EZ |
17206 | /* Return the name of the namespace represented by DIE. Set |
17207 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17208 | namespace. */ | |
17209 | ||
17210 | static const char * | |
e142c38c | 17211 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17212 | { |
17213 | struct die_info *current_die; | |
17214 | const char *name = NULL; | |
17215 | ||
17216 | /* Loop through the extensions until we find a name. */ | |
17217 | ||
17218 | for (current_die = die; | |
17219 | current_die != NULL; | |
f2f0e013 | 17220 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17221 | { |
96553a0c DE |
17222 | /* We don't use dwarf2_name here so that we can detect the absence |
17223 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17224 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17225 | |
38d518c9 EZ |
17226 | if (name != NULL) |
17227 | break; | |
17228 | } | |
17229 | ||
17230 | /* Is it an anonymous namespace? */ | |
17231 | ||
17232 | *is_anonymous = (name == NULL); | |
17233 | if (*is_anonymous) | |
2b1dbab0 | 17234 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17235 | |
17236 | return name; | |
d9fa45fe DC |
17237 | } |
17238 | ||
c906108c SS |
17239 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17240 | the user defined type vector. */ | |
17241 | ||
f792889a | 17242 | static struct type * |
e7c27a73 | 17243 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17244 | { |
5e22e966 | 17245 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17246 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17247 | struct type *type; |
8b2dbe47 KB |
17248 | struct attribute *attr_byte_size; |
17249 | struct attribute *attr_address_class; | |
17250 | int byte_size, addr_class; | |
7e314c57 JK |
17251 | struct type *target_type; |
17252 | ||
17253 | target_type = die_type (die, cu); | |
c906108c | 17254 | |
7e314c57 JK |
17255 | /* The die_type call above may have already set the type for this DIE. */ |
17256 | type = get_die_type (die, cu); | |
17257 | if (type) | |
17258 | return type; | |
17259 | ||
17260 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17261 | |
e142c38c | 17262 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17263 | if (attr_byte_size) |
529908cb | 17264 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17265 | else |
8b2dbe47 KB |
17266 | byte_size = cu_header->addr_size; |
17267 | ||
e142c38c | 17268 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17269 | if (attr_address_class) |
529908cb | 17270 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17271 | else |
17272 | addr_class = DW_ADDR_none; | |
17273 | ||
2b4424c3 TT |
17274 | ULONGEST alignment = get_alignment (cu, die); |
17275 | ||
17276 | /* If the pointer size, alignment, or address class is different | |
17277 | than the default, create a type variant marked as such and set | |
17278 | the length accordingly. */ | |
17279 | if (TYPE_LENGTH (type) != byte_size | |
17280 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17281 | && alignment != TYPE_RAW_ALIGN (type)) | |
17282 | || addr_class != DW_ADDR_none) | |
c906108c | 17283 | { |
5e2b427d | 17284 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17285 | { |
314ad88d PA |
17286 | type_instance_flags type_flags |
17287 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17288 | addr_class); | |
876cecd0 TT |
17289 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17290 | == 0); | |
8b2dbe47 KB |
17291 | type = make_type_with_address_space (type, type_flags); |
17292 | } | |
17293 | else if (TYPE_LENGTH (type) != byte_size) | |
17294 | { | |
b98664d3 | 17295 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17296 | } |
2b4424c3 TT |
17297 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17298 | { | |
b98664d3 | 17299 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17300 | " - DIE at %s [in module %s]"), |
17301 | sect_offset_str (die->sect_off), | |
5e22e966 | 17302 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17303 | } |
6e70227d | 17304 | else |
9a619af0 MS |
17305 | { |
17306 | /* Should we also complain about unhandled address classes? */ | |
17307 | } | |
c906108c | 17308 | } |
8b2dbe47 KB |
17309 | |
17310 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17311 | set_type_align (type, alignment); |
f792889a | 17312 | return set_die_type (die, type, cu); |
c906108c SS |
17313 | } |
17314 | ||
17315 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17316 | the user defined type vector. */ | |
17317 | ||
f792889a | 17318 | static struct type * |
e7c27a73 | 17319 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17320 | { |
17321 | struct type *type; | |
17322 | struct type *to_type; | |
17323 | struct type *domain; | |
17324 | ||
e7c27a73 DJ |
17325 | to_type = die_type (die, cu); |
17326 | domain = die_containing_type (die, cu); | |
0d5de010 | 17327 | |
7e314c57 JK |
17328 | /* The calls above may have already set the type for this DIE. */ |
17329 | type = get_die_type (die, cu); | |
17330 | if (type) | |
17331 | return type; | |
17332 | ||
78134374 | 17333 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17334 | type = lookup_methodptr_type (to_type); |
78134374 | 17335 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17336 | { |
5e22e966 | 17337 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17338 | |
17339 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17340 | to_type->fields (), to_type->num_fields (), |
a409645d | 17341 | to_type->has_varargs ()); |
7078baeb TT |
17342 | type = lookup_methodptr_type (new_type); |
17343 | } | |
0d5de010 DJ |
17344 | else |
17345 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17346 | |
f792889a | 17347 | return set_die_type (die, type, cu); |
c906108c SS |
17348 | } |
17349 | ||
4297a3f0 | 17350 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17351 | the user defined type vector. */ |
17352 | ||
f792889a | 17353 | static struct type * |
4297a3f0 | 17354 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17355 | enum type_code refcode) |
c906108c | 17356 | { |
e7c27a73 | 17357 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17358 | struct type *type, *target_type; |
c906108c SS |
17359 | struct attribute *attr; |
17360 | ||
4297a3f0 AV |
17361 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17362 | ||
7e314c57 JK |
17363 | target_type = die_type (die, cu); |
17364 | ||
17365 | /* The die_type call above may have already set the type for this DIE. */ | |
17366 | type = get_die_type (die, cu); | |
17367 | if (type) | |
17368 | return type; | |
17369 | ||
4297a3f0 | 17370 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17371 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17372 | if (attr != nullptr) |
c906108c | 17373 | { |
529908cb | 17374 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17375 | } |
17376 | else | |
17377 | { | |
107d2387 | 17378 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17379 | } |
2b4424c3 | 17380 | maybe_set_alignment (cu, die, type); |
f792889a | 17381 | return set_die_type (die, type, cu); |
c906108c SS |
17382 | } |
17383 | ||
cf363f18 MW |
17384 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17385 | outputs DWARF type qualifiers that apply to an array, not the | |
17386 | element type. But GDB relies on the array element type to carry | |
17387 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17388 | specification. */ | |
17389 | ||
17390 | static struct type * | |
17391 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17392 | struct type *base_type, int cnst, int voltl) | |
17393 | { | |
17394 | struct type *el_type, *inner_array; | |
17395 | ||
17396 | base_type = copy_type (base_type); | |
17397 | inner_array = base_type; | |
17398 | ||
78134374 | 17399 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17400 | { |
17401 | TYPE_TARGET_TYPE (inner_array) = | |
17402 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17403 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17404 | } | |
17405 | ||
17406 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17407 | cnst |= TYPE_CONST (el_type); | |
17408 | voltl |= TYPE_VOLATILE (el_type); | |
17409 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17410 | ||
17411 | return set_die_type (die, base_type, cu); | |
17412 | } | |
17413 | ||
f792889a | 17414 | static struct type * |
e7c27a73 | 17415 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17416 | { |
f792889a | 17417 | struct type *base_type, *cv_type; |
c906108c | 17418 | |
e7c27a73 | 17419 | base_type = die_type (die, cu); |
7e314c57 JK |
17420 | |
17421 | /* The die_type call above may have already set the type for this DIE. */ | |
17422 | cv_type = get_die_type (die, cu); | |
17423 | if (cv_type) | |
17424 | return cv_type; | |
17425 | ||
2f608a3a KW |
17426 | /* In case the const qualifier is applied to an array type, the element type |
17427 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17428 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17429 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17430 | |
f792889a DJ |
17431 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17432 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17433 | } |
17434 | ||
f792889a | 17435 | static struct type * |
e7c27a73 | 17436 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17437 | { |
f792889a | 17438 | struct type *base_type, *cv_type; |
c906108c | 17439 | |
e7c27a73 | 17440 | base_type = die_type (die, cu); |
7e314c57 JK |
17441 | |
17442 | /* The die_type call above may have already set the type for this DIE. */ | |
17443 | cv_type = get_die_type (die, cu); | |
17444 | if (cv_type) | |
17445 | return cv_type; | |
17446 | ||
cf363f18 MW |
17447 | /* In case the volatile qualifier is applied to an array type, the |
17448 | element type is so qualified, not the array type (section 6.7.3 | |
17449 | of C99). */ | |
78134374 | 17450 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17451 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17452 | ||
f792889a DJ |
17453 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17454 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17455 | } |
17456 | ||
06d66ee9 TT |
17457 | /* Handle DW_TAG_restrict_type. */ |
17458 | ||
17459 | static struct type * | |
17460 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17461 | { | |
17462 | struct type *base_type, *cv_type; | |
17463 | ||
17464 | base_type = die_type (die, cu); | |
17465 | ||
17466 | /* The die_type call above may have already set the type for this DIE. */ | |
17467 | cv_type = get_die_type (die, cu); | |
17468 | if (cv_type) | |
17469 | return cv_type; | |
17470 | ||
17471 | cv_type = make_restrict_type (base_type); | |
17472 | return set_die_type (die, cv_type, cu); | |
17473 | } | |
17474 | ||
a2c2acaf MW |
17475 | /* Handle DW_TAG_atomic_type. */ |
17476 | ||
17477 | static struct type * | |
17478 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17479 | { | |
17480 | struct type *base_type, *cv_type; | |
17481 | ||
17482 | base_type = die_type (die, cu); | |
17483 | ||
17484 | /* The die_type call above may have already set the type for this DIE. */ | |
17485 | cv_type = get_die_type (die, cu); | |
17486 | if (cv_type) | |
17487 | return cv_type; | |
17488 | ||
17489 | cv_type = make_atomic_type (base_type); | |
17490 | return set_die_type (die, cv_type, cu); | |
17491 | } | |
17492 | ||
c906108c SS |
17493 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17494 | the user defined type vector. It isn't really a user defined type, | |
17495 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17496 | attribute to reference it. */ | |
17497 | ||
f792889a | 17498 | static struct type * |
e7c27a73 | 17499 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17500 | { |
5e22e966 | 17501 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17502 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17503 | struct type *type, *range_type, *index_type, *char_type; |
17504 | struct attribute *attr; | |
216a7e6b AB |
17505 | struct dynamic_prop prop; |
17506 | bool length_is_constant = true; | |
17507 | LONGEST length; | |
17508 | ||
17509 | /* There are a couple of places where bit sizes might be made use of | |
17510 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17511 | of make use of these. Handling bit sizes that are a multiple of the | |
17512 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17513 | with that problem when we have to. Warn about these attributes being | |
17514 | unsupported, then parse the type and ignore them like we always | |
17515 | have. */ | |
17516 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17517 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17518 | { | |
17519 | static bool warning_printed = false; | |
17520 | if (!warning_printed) | |
17521 | { | |
17522 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17523 | "currently supported on DW_TAG_string_type.")); | |
17524 | warning_printed = true; | |
17525 | } | |
17526 | } | |
c906108c | 17527 | |
e142c38c | 17528 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17529 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17530 | { |
17531 | /* The string length describes the location at which the length of | |
17532 | the string can be found. The size of the length field can be | |
17533 | specified with one of the attributes below. */ | |
17534 | struct type *prop_type; | |
17535 | struct attribute *len | |
17536 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17537 | if (len == nullptr) | |
17538 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17539 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17540 | { |
17541 | /* Pass 0 as the default as we know this attribute is constant | |
17542 | and the default value will not be returned. */ | |
0826b30a | 17543 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17544 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17545 | } |
17546 | else | |
17547 | { | |
17548 | /* If the size is not specified then we assume it is the size of | |
17549 | an address on this target. */ | |
293e7e51 | 17550 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17551 | } |
17552 | ||
17553 | /* Convert the attribute into a dynamic property. */ | |
17554 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17555 | length = 1; | |
17556 | else | |
17557 | length_is_constant = false; | |
17558 | } | |
17559 | else if (attr != nullptr) | |
17560 | { | |
17561 | /* This DW_AT_string_length just contains the length with no | |
17562 | indirection. There's no need to create a dynamic property in this | |
17563 | case. Pass 0 for the default value as we know it will not be | |
17564 | returned in this case. */ | |
0826b30a | 17565 | length = attr->constant_value (0); |
216a7e6b AB |
17566 | } |
17567 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17568 | { |
216a7e6b | 17569 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17570 | length = attr->constant_value (1); |
c906108c SS |
17571 | } |
17572 | else | |
17573 | { | |
216a7e6b AB |
17574 | /* Use 1 as a fallback length if we have nothing else. */ |
17575 | length = 1; | |
c906108c | 17576 | } |
6ccb9162 | 17577 | |
46bf5051 | 17578 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17579 | if (length_is_constant) |
17580 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17581 | else | |
17582 | { | |
17583 | struct dynamic_prop low_bound; | |
17584 | ||
8c2e4e06 | 17585 | low_bound.set_const_val (1); |
216a7e6b AB |
17586 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17587 | } | |
3b7538c0 UW |
17588 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17589 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17590 | |
f792889a | 17591 | return set_die_type (die, type, cu); |
c906108c SS |
17592 | } |
17593 | ||
4d804846 JB |
17594 | /* Assuming that DIE corresponds to a function, returns nonzero |
17595 | if the function is prototyped. */ | |
17596 | ||
17597 | static int | |
17598 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17599 | { | |
17600 | struct attribute *attr; | |
17601 | ||
17602 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17603 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17604 | return 1; |
17605 | ||
17606 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17607 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17608 | languages that allow unprototyped functions (Eg: Objective C). |
17609 | For all other languages, assume that functions are always | |
17610 | prototyped. */ | |
17611 | if (cu->language != language_c | |
17612 | && cu->language != language_objc | |
17613 | && cu->language != language_opencl) | |
17614 | return 1; | |
17615 | ||
17616 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17617 | prototyped and unprototyped functions; default to prototyped, | |
17618 | since that is more common in modern code (and RealView warns | |
17619 | about unprototyped functions). */ | |
17620 | if (producer_is_realview (cu->producer)) | |
17621 | return 1; | |
17622 | ||
17623 | return 0; | |
17624 | } | |
17625 | ||
c906108c SS |
17626 | /* Handle DIES due to C code like: |
17627 | ||
17628 | struct foo | |
c5aa993b JM |
17629 | { |
17630 | int (*funcp)(int a, long l); | |
17631 | int b; | |
17632 | }; | |
c906108c | 17633 | |
0963b4bd | 17634 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17635 | |
f792889a | 17636 | static struct type * |
e7c27a73 | 17637 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17638 | { |
5e22e966 | 17639 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17640 | struct type *type; /* Type that this function returns. */ |
17641 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17642 | struct attribute *attr; |
17643 | ||
e7c27a73 | 17644 | type = die_type (die, cu); |
7e314c57 JK |
17645 | |
17646 | /* The die_type call above may have already set the type for this DIE. */ | |
17647 | ftype = get_die_type (die, cu); | |
17648 | if (ftype) | |
17649 | return ftype; | |
17650 | ||
0c8b41f1 | 17651 | ftype = lookup_function_type (type); |
c906108c | 17652 | |
4d804846 | 17653 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17654 | ftype->set_is_prototyped (true); |
c906108c | 17655 | |
c055b101 CV |
17656 | /* Store the calling convention in the type if it's available in |
17657 | the subroutine die. Otherwise set the calling convention to | |
17658 | the default value DW_CC_normal. */ | |
17659 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 17660 | if (attr != nullptr |
529908cb | 17661 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 17662 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 17663 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
17664 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17665 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17666 | else | |
17667 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17668 | |
743649fd MW |
17669 | /* Record whether the function returns normally to its caller or not |
17670 | if the DWARF producer set that information. */ | |
17671 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 17672 | if (attr && attr->as_boolean ()) |
743649fd MW |
17673 | TYPE_NO_RETURN (ftype) = 1; |
17674 | ||
76c10ea2 GM |
17675 | /* We need to add the subroutine type to the die immediately so |
17676 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17677 | declared as the same subroutine type. */ |
76c10ea2 | 17678 | set_die_type (die, ftype, cu); |
6e70227d | 17679 | |
639d11d3 | 17680 | if (die->child != NULL) |
c906108c | 17681 | { |
bb5ed363 | 17682 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17683 | struct die_info *child_die; |
8072405b | 17684 | int nparams, iparams; |
c906108c SS |
17685 | |
17686 | /* Count the number of parameters. | |
dda83cd7 SM |
17687 | FIXME: GDB currently ignores vararg functions, but knows about |
17688 | vararg member functions. */ | |
8072405b | 17689 | nparams = 0; |
639d11d3 | 17690 | child_die = die->child; |
c906108c SS |
17691 | while (child_die && child_die->tag) |
17692 | { | |
17693 | if (child_die->tag == DW_TAG_formal_parameter) | |
17694 | nparams++; | |
17695 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17696 | ftype->set_has_varargs (true); |
17697 | ||
436c571c | 17698 | child_die = child_die->sibling; |
c906108c SS |
17699 | } |
17700 | ||
17701 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17702 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17703 | ftype->set_fields |
17704 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17705 | |
8072405b JK |
17706 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17707 | even if we error out during the parameters reading below. */ | |
17708 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17709 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17710 | |
17711 | iparams = 0; | |
639d11d3 | 17712 | child_die = die->child; |
c906108c SS |
17713 | while (child_die && child_die->tag) |
17714 | { | |
17715 | if (child_die->tag == DW_TAG_formal_parameter) | |
17716 | { | |
3ce3b1ba PA |
17717 | struct type *arg_type; |
17718 | ||
17719 | /* DWARF version 2 has no clean way to discern C++ | |
17720 | static and non-static member functions. G++ helps | |
17721 | GDB by marking the first parameter for non-static | |
17722 | member functions (which is the this pointer) as | |
17723 | artificial. We pass this information to | |
17724 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17725 | ||
17726 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17727 | 4.5 does not yet generate. */ | |
e142c38c | 17728 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17729 | if (attr != nullptr) |
c45bc3f8 | 17730 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 17731 | else |
9c37b5ae | 17732 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17733 | arg_type = die_type (child_die, cu); |
17734 | ||
17735 | /* RealView does not mark THIS as const, which the testsuite | |
17736 | expects. GCC marks THIS as const in method definitions, | |
17737 | but not in the class specifications (GCC PR 43053). */ | |
17738 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17739 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17740 | { | |
17741 | int is_this = 0; | |
17742 | struct dwarf2_cu *arg_cu = cu; | |
17743 | const char *name = dwarf2_name (child_die, cu); | |
17744 | ||
17745 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17746 | if (attr != nullptr) |
3ce3b1ba PA |
17747 | { |
17748 | /* If the compiler emits this, use it. */ | |
17749 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17750 | is_this = 1; | |
17751 | } | |
17752 | else if (name && strcmp (name, "this") == 0) | |
17753 | /* Function definitions will have the argument names. */ | |
17754 | is_this = 1; | |
17755 | else if (name == NULL && iparams == 0) | |
17756 | /* Declarations may not have the names, so like | |
17757 | elsewhere in GDB, assume an artificial first | |
17758 | argument is "this". */ | |
17759 | is_this = 1; | |
17760 | ||
17761 | if (is_this) | |
17762 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17763 | arg_type, 0); | |
17764 | } | |
17765 | ||
5d14b6e5 | 17766 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17767 | iparams++; |
17768 | } | |
436c571c | 17769 | child_die = child_die->sibling; |
c906108c SS |
17770 | } |
17771 | } | |
17772 | ||
76c10ea2 | 17773 | return ftype; |
c906108c SS |
17774 | } |
17775 | ||
f792889a | 17776 | static struct type * |
e7c27a73 | 17777 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17778 | { |
5e22e966 | 17779 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17780 | const char *name = NULL; |
3c8e0968 | 17781 | struct type *this_type, *target_type; |
c906108c | 17782 | |
94af9270 | 17783 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 17784 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 17785 | this_type->set_target_is_stub (true); |
f792889a | 17786 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17787 | target_type = die_type (die, cu); |
17788 | if (target_type != this_type) | |
17789 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17790 | else | |
17791 | { | |
17792 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17793 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17794 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17795 | "- DIE at %s [in module %s]"), |
17796 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17797 | TYPE_TARGET_TYPE (this_type) = NULL; |
17798 | } | |
e4003a34 TV |
17799 | if (name == NULL) |
17800 | { | |
17801 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17802 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17803 | Handle these by just returning the target type, rather than | |
17804 | constructing an anonymous typedef type and trying to handle this | |
17805 | elsewhere. */ | |
17806 | set_die_type (die, target_type, cu); | |
17807 | return target_type; | |
17808 | } | |
f792889a | 17809 | return this_type; |
c906108c SS |
17810 | } |
17811 | ||
a625a8c9 TT |
17812 | /* Helper for get_dwarf2_rational_constant that computes the value of |
17813 | a given gmp_mpz given an attribute. */ | |
17814 | ||
17815 | static void | |
17816 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
17817 | { | |
17818 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
17819 | location expression that pushes an implicit value. */ | |
17820 | if (attr->form == DW_FORM_exprloc) | |
17821 | { | |
17822 | dwarf_block *blk = attr->as_block (); | |
17823 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
17824 | { | |
17825 | uint64_t len; | |
17826 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
17827 | blk->data + blk->size, | |
17828 | &len); | |
17829 | if (ptr - blk->data + len <= blk->size) | |
17830 | { | |
17831 | mpz_import (value->val, len, | |
17832 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17833 | 1, 0, 0, ptr); | |
17834 | return; | |
17835 | } | |
17836 | } | |
17837 | ||
17838 | /* On failure set it to 1. */ | |
17839 | *value = gdb_mpz (1); | |
17840 | } | |
17841 | else if (attr->form_is_block ()) | |
17842 | { | |
17843 | dwarf_block *blk = attr->as_block (); | |
17844 | mpz_import (value->val, blk->size, | |
17845 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
17846 | 1, 0, 0, blk->data); | |
17847 | } | |
17848 | else | |
17849 | *value = gdb_mpz (attr->constant_value (1)); | |
17850 | } | |
17851 | ||
09584414 JB |
17852 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
17853 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
17854 | ||
17855 | If the numerator and/or numerator attribute is missing, | |
17856 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
17857 | untouched. */ | |
17858 | ||
17859 | static void | |
17860 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 17861 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
17862 | { |
17863 | struct attribute *num_attr, *denom_attr; | |
17864 | ||
17865 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
17866 | if (num_attr == nullptr) | |
17867 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
17868 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
17869 | ||
17870 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
17871 | if (denom_attr == nullptr) | |
17872 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
17873 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
17874 | ||
17875 | if (num_attr == nullptr || denom_attr == nullptr) | |
17876 | return; | |
17877 | ||
a625a8c9 TT |
17878 | get_mpz (cu, numerator, num_attr); |
17879 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
17880 | } |
17881 | ||
17882 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
17883 | rational constant, rather than a signed one. | |
17884 | ||
17885 | If the rational constant has a negative value, a complaint | |
17886 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
17887 | ||
17888 | static void | |
17889 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
17890 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
17891 | gdb_mpz *numerator, |
17892 | gdb_mpz *denominator) | |
09584414 | 17893 | { |
5cde1d82 TT |
17894 | gdb_mpz num (1); |
17895 | gdb_mpz denom (1); | |
09584414 JB |
17896 | |
17897 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 17898 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 17899 | { |
5cde1d82 TT |
17900 | mpz_neg (num.val, num.val); |
17901 | mpz_neg (denom.val, denom.val); | |
09584414 | 17902 | } |
5cde1d82 | 17903 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
17904 | { |
17905 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
17906 | " in DIE at %s"), | |
17907 | sect_offset_str (die->sect_off)); | |
17908 | return; | |
17909 | } | |
5cde1d82 | 17910 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
17911 | { |
17912 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
17913 | " in DIE at %s"), | |
17914 | sect_offset_str (die->sect_off)); | |
17915 | return; | |
17916 | } | |
17917 | ||
5cde1d82 TT |
17918 | *numerator = std::move (num); |
17919 | *denominator = std::move (denom); | |
09584414 JB |
17920 | } |
17921 | ||
bbcdf9ab TT |
17922 | /* Assuming that ENCODING is a string whose contents starting at the |
17923 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
17924 | number and set RESULT to the value. K is updated to point to the | |
17925 | character immediately following the number. | |
17926 | ||
17927 | If the string does not conform to the format described above, false | |
17928 | is returned, and K may or may not be changed. */ | |
17929 | ||
17930 | static bool | |
17931 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
17932 | { | |
17933 | /* The next character should be an underscore ('_') followed | |
17934 | by a digit. */ | |
17935 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
17936 | return false; | |
17937 | ||
17938 | /* Skip the underscore. */ | |
17939 | k++; | |
17940 | int start = k; | |
17941 | ||
17942 | /* Determine the number of digits for our number. */ | |
17943 | while (isdigit (encoding[k])) | |
17944 | k++; | |
17945 | if (k == start) | |
17946 | return false; | |
17947 | ||
17948 | std::string copy (&encoding[start], k - start); | |
17949 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
17950 | return false; | |
17951 | ||
17952 | return true; | |
17953 | } | |
17954 | ||
17955 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
17956 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
17957 | DENOM, update OFFSET, and return true on success. Return false on | |
17958 | failure. */ | |
17959 | ||
17960 | static bool | |
17961 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
17962 | gdb_mpz *num, gdb_mpz *denom) | |
17963 | { | |
17964 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
17965 | return false; | |
17966 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
17967 | } | |
17968 | ||
09584414 | 17969 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
17970 | of the corresponding TYPE by setting its type-specific data. CU is |
17971 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
17972 | encodings. It is nullptr if the GNAT encoding should be | |
17973 | ignored. */ | |
09584414 JB |
17974 | |
17975 | static void | |
bbcdf9ab TT |
17976 | finish_fixed_point_type (struct type *type, const char *suffix, |
17977 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 17978 | { |
09584414 JB |
17979 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
17980 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
17981 | ||
bbcdf9ab TT |
17982 | /* If GNAT encodings are preferred, don't examine the |
17983 | attributes. */ | |
17984 | struct attribute *attr = nullptr; | |
17985 | if (suffix == nullptr) | |
17986 | { | |
17987 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
17988 | if (attr == nullptr) | |
17989 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
17990 | if (attr == nullptr) | |
17991 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
17992 | } | |
09584414 | 17993 | |
5cde1d82 TT |
17994 | /* Numerator and denominator of our fixed-point type's scaling factor. |
17995 | The default is a scaling factor of 1, which we use as a fallback | |
17996 | when we are not able to decode it (problem with the debugging info, | |
17997 | unsupported forms, bug in GDB, etc...). Using that as the default | |
17998 | allows us to at least print the unscaled value, which might still | |
17999 | be useful to a user. */ | |
18000 | gdb_mpz scale_num (1); | |
18001 | gdb_mpz scale_denom (1); | |
18002 | ||
09584414 JB |
18003 | if (attr == nullptr) |
18004 | { | |
bbcdf9ab TT |
18005 | int offset = 0; |
18006 | if (suffix != nullptr | |
18007 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18008 | &scale_denom) | |
18009 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18010 | second ratio is the 'small value. In this situation, we | |
18011 | want the second value. */ | |
18012 | && (suffix[offset] != '_' | |
18013 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18014 | &scale_denom))) | |
18015 | { | |
18016 | /* Found it. */ | |
18017 | } | |
18018 | else | |
18019 | { | |
18020 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18021 | and hope for the best. At least the user will be able to | |
18022 | see the encoded value. */ | |
18023 | scale_num = 1; | |
18024 | scale_denom = 1; | |
18025 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18026 | sect_offset_str (die->sect_off)); | |
18027 | } | |
09584414 JB |
18028 | } |
18029 | else if (attr->name == DW_AT_binary_scale) | |
18030 | { | |
18031 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18032 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18033 | |
5cde1d82 | 18034 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18035 | } |
18036 | else if (attr->name == DW_AT_decimal_scale) | |
18037 | { | |
18038 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18039 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18040 | |
5cde1d82 | 18041 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18042 | } |
18043 | else if (attr->name == DW_AT_small) | |
18044 | { | |
18045 | struct die_info *scale_die; | |
18046 | struct dwarf2_cu *scale_cu = cu; | |
18047 | ||
18048 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18049 | if (scale_die->tag == DW_TAG_constant) | |
18050 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18051 | &scale_num, &scale_denom); | |
18052 | else | |
18053 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18054 | " (DIE at %s)"), | |
18055 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18056 | } | |
18057 | else | |
18058 | { | |
18059 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18060 | " (DIE at %s)"), | |
18061 | dwarf_attr_name (attr->name), | |
18062 | sect_offset_str (die->sect_off)); | |
18063 | } | |
18064 | ||
2a12c336 | 18065 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18066 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18067 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18068 | mpq_canonicalize (scaling_factor.val); |
18069 | } | |
18070 | ||
bbcdf9ab TT |
18071 | /* The gnat-encoding suffix for fixed point. */ |
18072 | ||
18073 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18074 | ||
18075 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18076 | "XF" suffix of the name. The text after this is what encodes the | |
18077 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18078 | ||
18079 | static const char * | |
18080 | gnat_encoded_fixed_point_type_info (const char *name) | |
18081 | { | |
18082 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18083 | } | |
18084 | ||
9b790ce7 UW |
18085 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18086 | (which may be different from NAME) to the architecture back-end to allow | |
18087 | it to guess the correct format if necessary. */ | |
18088 | ||
18089 | static struct type * | |
18090 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18091 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18092 | { |
08feed99 | 18093 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18094 | const struct floatformat **format; |
18095 | struct type *type; | |
18096 | ||
18097 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18098 | if (format) | |
103a685e | 18099 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18100 | else |
77b7c781 | 18101 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18102 | |
18103 | return type; | |
18104 | } | |
18105 | ||
eb77c9df AB |
18106 | /* Allocate an integer type of size BITS and name NAME. */ |
18107 | ||
18108 | static struct type * | |
18109 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18110 | int bits, int unsigned_p, const char *name) | |
18111 | { | |
18112 | struct type *type; | |
18113 | ||
18114 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18115 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18116 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18117 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18118 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18119 | type = objfile_type (objfile)->builtin_void; |
18120 | else | |
18121 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18122 | ||
18123 | return type; | |
18124 | } | |
18125 | ||
09584414 JB |
18126 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18127 | a constant rational, where both the numerator and denominator | |
18128 | are equal to zero. | |
18129 | ||
18130 | CU is the DIE's Compilation Unit. */ | |
18131 | ||
18132 | static bool | |
18133 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18134 | struct dwarf2_cu *cu) | |
18135 | { | |
18136 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18137 | if (attr == nullptr) | |
18138 | return false; | |
18139 | ||
18140 | struct dwarf2_cu *scale_cu = cu; | |
18141 | struct die_info *scale_die | |
18142 | = follow_die_ref (die, attr, &scale_cu); | |
18143 | ||
18144 | if (scale_die->tag != DW_TAG_constant) | |
18145 | return false; | |
18146 | ||
5cde1d82 | 18147 | gdb_mpz num (1), denom (1); |
09584414 | 18148 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18149 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18150 | } |
18151 | ||
8bdc1658 AB |
18152 | /* Initialise and return a floating point type of size BITS suitable for |
18153 | use as a component of a complex number. The NAME_HINT is passed through | |
18154 | when initialising the floating point type and is the name of the complex | |
18155 | type. | |
18156 | ||
18157 | As DWARF doesn't currently provide an explicit name for the components | |
18158 | of a complex number, but it can be helpful to have these components | |
18159 | named, we try to select a suitable name based on the size of the | |
18160 | component. */ | |
18161 | static struct type * | |
18162 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18163 | struct objfile *objfile, | |
103a685e TT |
18164 | int bits, const char *name_hint, |
18165 | enum bfd_endian byte_order) | |
8bdc1658 | 18166 | { |
08feed99 | 18167 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18168 | struct type *tt = nullptr; |
18169 | ||
35add35e AB |
18170 | /* Try to find a suitable floating point builtin type of size BITS. |
18171 | We're going to use the name of this type as the name for the complex | |
18172 | target type that we are about to create. */ | |
1db455a7 | 18173 | switch (cu->language) |
8bdc1658 | 18174 | { |
1db455a7 AB |
18175 | case language_fortran: |
18176 | switch (bits) | |
18177 | { | |
18178 | case 32: | |
18179 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18180 | break; | |
18181 | case 64: | |
18182 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18183 | break; | |
18184 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18185 | case 128: | |
18186 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18187 | break; | |
18188 | } | |
8bdc1658 | 18189 | break; |
1db455a7 AB |
18190 | default: |
18191 | switch (bits) | |
18192 | { | |
18193 | case 32: | |
18194 | tt = builtin_type (gdbarch)->builtin_float; | |
18195 | break; | |
18196 | case 64: | |
18197 | tt = builtin_type (gdbarch)->builtin_double; | |
18198 | break; | |
18199 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18200 | case 128: | |
18201 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18202 | break; | |
18203 | } | |
8bdc1658 AB |
18204 | break; |
18205 | } | |
18206 | ||
35add35e AB |
18207 | /* If the type we found doesn't match the size we were looking for, then |
18208 | pretend we didn't find a type at all, the complex target type we | |
18209 | create will then be nameless. */ | |
a12e5744 | 18210 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18211 | tt = nullptr; |
18212 | ||
7d93a1e0 | 18213 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18214 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18215 | } |
18216 | ||
c906108c SS |
18217 | /* Find a representation of a given base type and install |
18218 | it in the TYPE field of the die. */ | |
18219 | ||
f792889a | 18220 | static struct type * |
e7c27a73 | 18221 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18222 | { |
5e22e966 | 18223 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18224 | struct type *type; |
18225 | struct attribute *attr; | |
19f392bc | 18226 | int encoding = 0, bits = 0; |
15d034d0 | 18227 | const char *name; |
34877895 | 18228 | gdbarch *arch; |
c906108c | 18229 | |
e142c38c | 18230 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18231 | if (attr != nullptr && attr->form_is_constant ()) |
18232 | encoding = attr->constant_value (0); | |
e142c38c | 18233 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18234 | if (attr != nullptr) |
529908cb | 18235 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18236 | name = dwarf2_name (die, cu); |
6ccb9162 | 18237 | if (!name) |
34877895 | 18238 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18239 | |
08feed99 | 18240 | arch = objfile->arch (); |
103a685e TT |
18241 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18242 | ||
34877895 | 18243 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18244 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18245 | { |
529908cb | 18246 | int endianity = attr->constant_value (0); |
103a685e TT |
18247 | |
18248 | switch (endianity) | |
18249 | { | |
18250 | case DW_END_big: | |
18251 | byte_order = BFD_ENDIAN_BIG; | |
18252 | break; | |
18253 | case DW_END_little: | |
18254 | byte_order = BFD_ENDIAN_LITTLE; | |
18255 | break; | |
18256 | default: | |
18257 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18258 | break; | |
18259 | } | |
18260 | } | |
6ccb9162 | 18261 | |
09584414 JB |
18262 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18263 | && cu->language == language_ada | |
18264 | && has_zero_over_zero_small_attribute (die, cu)) | |
18265 | { | |
18266 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18267 | the scaling factor is represented as fraction whose value | |
18268 | does not make sense (zero divided by zero), so we should | |
18269 | normally never see these. However, there is a small category | |
18270 | of fixed point types for which GNAT is unable to provide | |
18271 | the scaling factor via the standard DWARF mechanisms, and | |
18272 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18273 | This is likely what this DIE is about. */ |
09584414 JB |
18274 | encoding = (encoding == DW_ATE_signed_fixed |
18275 | ? DW_ATE_signed | |
18276 | : DW_ATE_unsigned); | |
18277 | } | |
18278 | ||
bbcdf9ab TT |
18279 | /* With GNAT encodings, fixed-point information will be encoded in |
18280 | the type name. Note that this can also occur with the above | |
18281 | zero-over-zero case, which is why this is a separate "if" rather | |
18282 | than an "else if". */ | |
18283 | const char *gnat_encoding_suffix = nullptr; | |
18284 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18285 | && cu->language == language_ada | |
18286 | && name != nullptr) | |
18287 | { | |
18288 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18289 | if (gnat_encoding_suffix != nullptr) | |
18290 | { | |
18291 | gdb_assert (startswith (gnat_encoding_suffix, | |
18292 | GNAT_FIXED_POINT_SUFFIX)); | |
18293 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18294 | name, gnat_encoding_suffix - name); | |
18295 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18296 | "XF". */ | |
18297 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18298 | ||
18299 | encoding = (encoding == DW_ATE_signed | |
18300 | ? DW_ATE_signed_fixed | |
18301 | : DW_ATE_unsigned_fixed); | |
18302 | } | |
18303 | } | |
18304 | ||
6ccb9162 | 18305 | switch (encoding) |
c906108c | 18306 | { |
6ccb9162 UW |
18307 | case DW_ATE_address: |
18308 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18309 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18310 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18311 | break; |
18312 | case DW_ATE_boolean: | |
19f392bc | 18313 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18314 | break; |
18315 | case DW_ATE_complex_float: | |
103a685e TT |
18316 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18317 | byte_order); | |
78134374 | 18318 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18319 | { |
18320 | if (name == nullptr) | |
18321 | { | |
18322 | struct obstack *obstack | |
5e22e966 | 18323 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18324 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18325 | nullptr); |
18326 | } | |
18327 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18328 | } | |
18329 | else | |
18330 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18331 | break; |
18332 | case DW_ATE_decimal_float: | |
19f392bc | 18333 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18334 | break; |
18335 | case DW_ATE_float: | |
103a685e | 18336 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18337 | break; |
18338 | case DW_ATE_signed: | |
eb77c9df | 18339 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18340 | break; |
18341 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18342 | if (cu->language == language_fortran |
18343 | && name | |
61012eef | 18344 | && startswith (name, "character(")) |
19f392bc UW |
18345 | type = init_character_type (objfile, bits, 1, name); |
18346 | else | |
eb77c9df | 18347 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18348 | break; |
18349 | case DW_ATE_signed_char: | |
6e70227d | 18350 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18351 | || cu->language == language_pascal |
18352 | || cu->language == language_fortran) | |
19f392bc UW |
18353 | type = init_character_type (objfile, bits, 0, name); |
18354 | else | |
eb77c9df | 18355 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18356 | break; |
18357 | case DW_ATE_unsigned_char: | |
868a0084 | 18358 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18359 | || cu->language == language_pascal |
c44af4eb TT |
18360 | || cu->language == language_fortran |
18361 | || cu->language == language_rust) | |
19f392bc UW |
18362 | type = init_character_type (objfile, bits, 1, name); |
18363 | else | |
eb77c9df | 18364 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18365 | break; |
75079b2b | 18366 | case DW_ATE_UTF: |
53e710ac | 18367 | { |
53e710ac PA |
18368 | if (bits == 16) |
18369 | type = builtin_type (arch)->builtin_char16; | |
18370 | else if (bits == 32) | |
18371 | type = builtin_type (arch)->builtin_char32; | |
18372 | else | |
18373 | { | |
b98664d3 | 18374 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18375 | bits); |
eb77c9df | 18376 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18377 | } |
18378 | return set_die_type (die, type, cu); | |
18379 | } | |
75079b2b | 18380 | break; |
09584414 JB |
18381 | case DW_ATE_signed_fixed: |
18382 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18383 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18384 | break; |
18385 | case DW_ATE_unsigned_fixed: | |
18386 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18387 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18388 | break; |
75079b2b | 18389 | |
6ccb9162 | 18390 | default: |
b98664d3 | 18391 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18392 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18393 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18394 | break; |
c906108c | 18395 | } |
6ccb9162 | 18396 | |
0114d602 | 18397 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18398 | type->set_has_no_signedness (true); |
0114d602 | 18399 | |
2b4424c3 TT |
18400 | maybe_set_alignment (cu, die, type); |
18401 | ||
db558e34 | 18402 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18403 | |
20a5fcbd TT |
18404 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18405 | { | |
18406 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18407 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18408 | { |
529908cb | 18409 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18410 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18411 | /* Only use the attributes if they make sense together. */ | |
18412 | if (attr == nullptr | |
529908cb TT |
18413 | || (attr->as_unsigned () + real_bit_size |
18414 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18415 | { |
18416 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18417 | = real_bit_size; | |
18418 | if (attr != nullptr) | |
18419 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18420 | = attr->as_unsigned (); |
20a5fcbd TT |
18421 | } |
18422 | } | |
18423 | } | |
18424 | ||
f792889a | 18425 | return set_die_type (die, type, cu); |
c906108c SS |
18426 | } |
18427 | ||
80180f79 SA |
18428 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18429 | resulting value of the attribute into struct bound_prop. | |
18430 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18431 | ||
18432 | static int | |
18433 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18434 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18435 | struct type *default_type) | |
80180f79 SA |
18436 | { |
18437 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18438 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18439 | struct objfile *objfile = per_objfile->objfile; |
18440 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18441 | |
9a49df9d AB |
18442 | gdb_assert (default_type != NULL); |
18443 | ||
80180f79 SA |
18444 | if (attr == NULL || prop == NULL) |
18445 | return 0; | |
18446 | ||
4fc6c0d5 | 18447 | if (attr->form_is_block ()) |
80180f79 | 18448 | { |
8d749320 | 18449 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18450 | baton->property_type = default_type; |
80180f79 | 18451 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18452 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18453 | |
18454 | struct dwarf_block *block = attr->as_block (); | |
18455 | baton->locexpr.size = block->size; | |
18456 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18457 | switch (attr->name) |
18458 | { | |
18459 | case DW_AT_string_length: | |
18460 | baton->locexpr.is_reference = true; | |
18461 | break; | |
18462 | default: | |
18463 | baton->locexpr.is_reference = false; | |
18464 | break; | |
18465 | } | |
8c2e4e06 SM |
18466 | |
18467 | prop->set_locexpr (baton); | |
18468 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18469 | } |
cd6c91b4 | 18470 | else if (attr->form_is_ref ()) |
80180f79 SA |
18471 | { |
18472 | struct dwarf2_cu *target_cu = cu; | |
18473 | struct die_info *target_die; | |
18474 | struct attribute *target_attr; | |
18475 | ||
18476 | target_die = follow_die_ref (die, attr, &target_cu); | |
18477 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18478 | if (target_attr == NULL) |
18479 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18480 | target_cu); | |
80180f79 SA |
18481 | if (target_attr == NULL) |
18482 | return 0; | |
18483 | ||
df25ebbd | 18484 | switch (target_attr->name) |
80180f79 | 18485 | { |
df25ebbd | 18486 | case DW_AT_location: |
cd6c91b4 | 18487 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18488 | { |
8d749320 | 18489 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18490 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18491 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18492 | prop->set_loclist (baton); |
18493 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18494 | } |
4fc6c0d5 | 18495 | else if (target_attr->form_is_block ()) |
df25ebbd | 18496 | { |
8d749320 | 18497 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18498 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18499 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18500 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18501 | struct dwarf_block *block = target_attr->as_block (); |
18502 | baton->locexpr.size = block->size; | |
18503 | baton->locexpr.data = block->data; | |
9a49df9d | 18504 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18505 | prop->set_locexpr (baton); |
18506 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18507 | } |
18508 | else | |
18509 | { | |
18510 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18511 | "dynamic property"); | |
18512 | return 0; | |
18513 | } | |
18514 | break; | |
18515 | case DW_AT_data_member_location: | |
18516 | { | |
18517 | LONGEST offset; | |
18518 | ||
18519 | if (!handle_data_member_location (target_die, target_cu, | |
18520 | &offset)) | |
18521 | return 0; | |
18522 | ||
8d749320 | 18523 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18524 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18525 | target_cu); |
df25ebbd JB |
18526 | baton->offset_info.offset = offset; |
18527 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18528 | prop->set_addr_offset (baton); |
df25ebbd JB |
18529 | break; |
18530 | } | |
80180f79 SA |
18531 | } |
18532 | } | |
cd6c91b4 | 18533 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18534 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18535 | else |
18536 | { | |
18537 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18538 | dwarf2_name (die, cu)); | |
18539 | return 0; | |
18540 | } | |
18541 | ||
18542 | return 1; | |
18543 | } | |
18544 | ||
09ba997f | 18545 | /* See read.h. */ |
9a49df9d | 18546 | |
09ba997f | 18547 | struct type * |
293e7e51 | 18548 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18549 | { |
9a49df9d AB |
18550 | struct type *int_type; |
18551 | ||
18552 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18553 | #define TRY_TYPE(F) \ |
18554 | int_type = (unsigned_p \ | |
18555 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18556 | : objfile_type (objfile)->builtin_ ## F); \ | |
18557 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18558 | return int_type |
18559 | ||
18560 | TRY_TYPE (char); | |
18561 | TRY_TYPE (short); | |
18562 | TRY_TYPE (int); | |
18563 | TRY_TYPE (long); | |
18564 | TRY_TYPE (long_long); | |
18565 | ||
18566 | #undef TRY_TYPE | |
18567 | ||
18568 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18569 | } | |
18570 | ||
09ba997f | 18571 | /* See read.h. */ |
11a8b164 | 18572 | |
09ba997f | 18573 | struct type * |
293e7e51 | 18574 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18575 | { |
293e7e51 SM |
18576 | int addr_size = this->per_cu->addr_size (); |
18577 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18578 | } |
18579 | ||
b86352cf AB |
18580 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18581 | present (which is valid) then compute the default type based on the | |
18582 | compilation units address size. */ | |
18583 | ||
18584 | static struct type * | |
18585 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18586 | { | |
18587 | struct type *index_type = die_type (die, cu); | |
18588 | ||
18589 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18590 | without specifying a base type. | |
18591 | In that case, the base type must be set to the type of | |
18592 | the lower bound, upper bound or count, in that order, if any of these | |
18593 | three attributes references an object that has a type. | |
18594 | If no base type is found, the Dwarf-2 specifications say that | |
18595 | a signed integer type of size equal to the size of an address should | |
18596 | be used. | |
18597 | For the following C code: `extern char gdb_int [];' | |
18598 | GCC produces an empty range DIE. | |
18599 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18600 | high bound or count are not yet handled by this code. */ | |
78134374 | 18601 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18602 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18603 | |
18604 | return index_type; | |
18605 | } | |
18606 | ||
a02abb62 JB |
18607 | /* Read the given DW_AT_subrange DIE. */ |
18608 | ||
f792889a | 18609 | static struct type * |
a02abb62 JB |
18610 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18611 | { | |
4c9ad8c2 | 18612 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18613 | struct type *range_type; |
18614 | struct attribute *attr; | |
729efb13 | 18615 | struct dynamic_prop low, high; |
4fae6e18 | 18616 | int low_default_is_valid; |
c451ebe5 | 18617 | int high_bound_is_count = 0; |
15d034d0 | 18618 | const char *name; |
d359392f | 18619 | ULONGEST negative_mask; |
e77813c8 | 18620 | |
b86352cf AB |
18621 | orig_base_type = read_subrange_index_type (die, cu); |
18622 | ||
4c9ad8c2 TT |
18623 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18624 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18625 | creating the range type, but we use the result of check_typedef | |
18626 | when examining properties of the type. */ | |
18627 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18628 | |
7e314c57 JK |
18629 | /* The die_type call above may have already set the type for this DIE. */ |
18630 | range_type = get_die_type (die, cu); | |
18631 | if (range_type) | |
18632 | return range_type; | |
18633 | ||
8c2e4e06 | 18634 | high.set_const_val (0); |
729efb13 | 18635 | |
4fae6e18 JK |
18636 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18637 | omitting DW_AT_lower_bound. */ | |
18638 | switch (cu->language) | |
6e70227d | 18639 | { |
4fae6e18 JK |
18640 | case language_c: |
18641 | case language_cplus: | |
8c2e4e06 | 18642 | low.set_const_val (0); |
4fae6e18 JK |
18643 | low_default_is_valid = 1; |
18644 | break; | |
18645 | case language_fortran: | |
8c2e4e06 | 18646 | low.set_const_val (1); |
4fae6e18 JK |
18647 | low_default_is_valid = 1; |
18648 | break; | |
18649 | case language_d: | |
4fae6e18 | 18650 | case language_objc: |
c44af4eb | 18651 | case language_rust: |
8c2e4e06 | 18652 | low.set_const_val (0); |
4fae6e18 JK |
18653 | low_default_is_valid = (cu->header.version >= 4); |
18654 | break; | |
18655 | case language_ada: | |
18656 | case language_m2: | |
18657 | case language_pascal: | |
8c2e4e06 | 18658 | low.set_const_val (1); |
4fae6e18 JK |
18659 | low_default_is_valid = (cu->header.version >= 4); |
18660 | break; | |
18661 | default: | |
8c2e4e06 | 18662 | low.set_const_val (0); |
4fae6e18 JK |
18663 | low_default_is_valid = 0; |
18664 | break; | |
a02abb62 JB |
18665 | } |
18666 | ||
e142c38c | 18667 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18668 | if (attr != nullptr) |
9a49df9d | 18669 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18670 | else if (!low_default_is_valid) |
b98664d3 | 18671 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18672 | "- DIE at %s [in module %s]"), |
18673 | sect_offset_str (die->sect_off), | |
5e22e966 | 18674 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18675 | |
506f5c41 TV |
18676 | struct attribute *attr_ub, *attr_count; |
18677 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18678 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18679 | { |
506f5c41 | 18680 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18681 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18682 | { |
c451ebe5 | 18683 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18684 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18685 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18686 | else |
18687 | high_bound_is_count = 1; | |
c2ff108b | 18688 | } |
506f5c41 TV |
18689 | else |
18690 | { | |
18691 | if (attr_ub != NULL) | |
18692 | complaint (_("Unresolved DW_AT_upper_bound " | |
18693 | "- DIE at %s [in module %s]"), | |
18694 | sect_offset_str (die->sect_off), | |
5e22e966 | 18695 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18696 | if (attr_count != NULL) |
18697 | complaint (_("Unresolved DW_AT_count " | |
18698 | "- DIE at %s [in module %s]"), | |
18699 | sect_offset_str (die->sect_off), | |
5e22e966 | 18700 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18701 | } |
e77813c8 | 18702 | } |
a02abb62 | 18703 | |
4e962e74 TT |
18704 | LONGEST bias = 0; |
18705 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18706 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18707 | bias = bias_attr->constant_value (0); |
4e962e74 | 18708 | |
dbb9c2b1 JB |
18709 | /* Normally, the DWARF producers are expected to use a signed |
18710 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18711 | But this is unfortunately not always the case, as witnessed | |
18712 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18713 | is used instead. To work around that ambiguity, we treat | |
18714 | the bounds as signed, and thus sign-extend their values, when | |
18715 | the base type is signed. */ | |
6e70227d | 18716 | negative_mask = |
d359392f | 18717 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18718 | if (low.kind () == PROP_CONST |
c6d940a9 | 18719 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18720 | low.set_const_val (low.const_val () | negative_mask); |
18721 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18722 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18723 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18724 | |
5bbd8269 AB |
18725 | /* Check for bit and byte strides. */ |
18726 | struct dynamic_prop byte_stride_prop; | |
18727 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18728 | if (attr_byte_stride != nullptr) | |
18729 | { | |
293e7e51 | 18730 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18731 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18732 | prop_type); | |
18733 | } | |
18734 | ||
18735 | struct dynamic_prop bit_stride_prop; | |
18736 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18737 | if (attr_bit_stride != nullptr) | |
18738 | { | |
18739 | /* It only makes sense to have either a bit or byte stride. */ | |
18740 | if (attr_byte_stride != nullptr) | |
18741 | { | |
18742 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18743 | "- DIE at %s [in module %s]"), | |
18744 | sect_offset_str (die->sect_off), | |
5e22e966 | 18745 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18746 | attr_bit_stride = nullptr; |
18747 | } | |
18748 | else | |
18749 | { | |
293e7e51 | 18750 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18751 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18752 | prop_type); | |
18753 | } | |
18754 | } | |
18755 | ||
18756 | if (attr_byte_stride != nullptr | |
18757 | || attr_bit_stride != nullptr) | |
18758 | { | |
18759 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18760 | struct dynamic_prop *stride | |
18761 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18762 | ||
18763 | range_type | |
18764 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18765 | &high, bias, stride, byte_stride_p); | |
18766 | } | |
18767 | else | |
18768 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18769 | |
c451ebe5 | 18770 | if (high_bound_is_count) |
599088e3 | 18771 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18772 | |
c2ff108b JK |
18773 | /* Ada expects an empty array on no boundary attributes. */ |
18774 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18775 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18776 | |
39cbfefa DJ |
18777 | name = dwarf2_name (die, cu); |
18778 | if (name) | |
d0e39ea2 | 18779 | range_type->set_name (name); |
6e70227d | 18780 | |
e142c38c | 18781 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18782 | if (attr != nullptr) |
529908cb | 18783 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 18784 | |
2b4424c3 TT |
18785 | maybe_set_alignment (cu, die, range_type); |
18786 | ||
7e314c57 JK |
18787 | set_die_type (die, range_type, cu); |
18788 | ||
18789 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18790 | set_descriptive_type (range_type, die, cu); |
18791 | ||
7e314c57 | 18792 | return range_type; |
a02abb62 | 18793 | } |
6e70227d | 18794 | |
f792889a | 18795 | static struct type * |
81a17f79 JB |
18796 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18797 | { | |
18798 | struct type *type; | |
81a17f79 | 18799 | |
5e22e966 | 18800 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18801 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18802 | |
74a2f8ff | 18803 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18804 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18805 | such a type, we treat it as a stub, and try to resolve it later on, |
18806 | when needed. */ | |
18807 | if (cu->language == language_ada) | |
b4b73759 | 18808 | type->set_is_stub (true); |
74a2f8ff | 18809 | |
f792889a | 18810 | return set_die_type (die, type, cu); |
81a17f79 | 18811 | } |
a02abb62 | 18812 | |
639d11d3 DC |
18813 | /* Read a single die and all its descendents. Set the die's sibling |
18814 | field to NULL; set other fields in the die correctly, and set all | |
18815 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18816 | location of the info_ptr after reading all of those dies. PARENT | |
18817 | is the parent of the die in question. */ | |
18818 | ||
18819 | static struct die_info * | |
dee91e82 | 18820 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18821 | const gdb_byte *info_ptr, |
18822 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18823 | struct die_info *parent) |
639d11d3 DC |
18824 | { |
18825 | struct die_info *die; | |
d521ce57 | 18826 | const gdb_byte *cur_ptr; |
639d11d3 | 18827 | |
3e225074 | 18828 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18829 | if (die == NULL) |
18830 | { | |
18831 | *new_info_ptr = cur_ptr; | |
18832 | return NULL; | |
18833 | } | |
93311388 | 18834 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18835 | |
3e225074 | 18836 | if (die->has_children) |
bf6af496 | 18837 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18838 | else |
18839 | { | |
18840 | die->child = NULL; | |
18841 | *new_info_ptr = cur_ptr; | |
18842 | } | |
18843 | ||
18844 | die->sibling = NULL; | |
18845 | die->parent = parent; | |
18846 | return die; | |
18847 | } | |
18848 | ||
18849 | /* Read a die, all of its descendents, and all of its siblings; set | |
18850 | all of the fields of all of the dies correctly. Arguments are as | |
18851 | in read_die_and_children. */ | |
18852 | ||
18853 | static struct die_info * | |
bf6af496 | 18854 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18855 | const gdb_byte *info_ptr, |
18856 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18857 | struct die_info *parent) |
639d11d3 DC |
18858 | { |
18859 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18860 | const gdb_byte *cur_ptr; |
639d11d3 | 18861 | |
c906108c | 18862 | cur_ptr = info_ptr; |
639d11d3 DC |
18863 | first_die = last_sibling = NULL; |
18864 | ||
18865 | while (1) | |
c906108c | 18866 | { |
639d11d3 | 18867 | struct die_info *die |
dee91e82 | 18868 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18869 | |
1d325ec1 | 18870 | if (die == NULL) |
c906108c | 18871 | { |
639d11d3 DC |
18872 | *new_info_ptr = cur_ptr; |
18873 | return first_die; | |
c906108c | 18874 | } |
1d325ec1 DJ |
18875 | |
18876 | if (!first_die) | |
18877 | first_die = die; | |
c906108c | 18878 | else |
1d325ec1 DJ |
18879 | last_sibling->sibling = die; |
18880 | ||
18881 | last_sibling = die; | |
c906108c | 18882 | } |
c906108c SS |
18883 | } |
18884 | ||
bf6af496 DE |
18885 | /* Read a die, all of its descendents, and all of its siblings; set |
18886 | all of the fields of all of the dies correctly. Arguments are as | |
18887 | in read_die_and_children. | |
18888 | This the main entry point for reading a DIE and all its children. */ | |
18889 | ||
18890 | static struct die_info * | |
18891 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18892 | const gdb_byte *info_ptr, |
18893 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18894 | struct die_info *parent) |
18895 | { | |
18896 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18897 | new_info_ptr, parent); | |
18898 | ||
b4f54984 | 18899 | if (dwarf_die_debug) |
bf6af496 DE |
18900 | { |
18901 | fprintf_unfiltered (gdb_stdlog, | |
18902 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18903 | reader->die_section->get_name (), |
bf6af496 DE |
18904 | (unsigned) (info_ptr - reader->die_section->buffer), |
18905 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18906 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18907 | } |
18908 | ||
18909 | return die; | |
18910 | } | |
18911 | ||
3019eac3 DE |
18912 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18913 | attributes. | |
18914 | The caller is responsible for filling in the extra attributes | |
18915 | and updating (*DIEP)->num_attrs. | |
18916 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18917 | except for its child, sibling, and parent fields. */ |
93311388 | 18918 | |
d521ce57 | 18919 | static const gdb_byte * |
3019eac3 | 18920 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18921 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18922 | int num_extra_attrs) |
93311388 | 18923 | { |
b64f50a1 | 18924 | unsigned int abbrev_number, bytes_read, i; |
7c32eebb | 18925 | const struct abbrev_info *abbrev; |
93311388 DE |
18926 | struct die_info *die; |
18927 | struct dwarf2_cu *cu = reader->cu; | |
18928 | bfd *abfd = reader->abfd; | |
18929 | ||
9c541725 | 18930 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18931 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18932 | info_ptr += bytes_read; | |
18933 | if (!abbrev_number) | |
18934 | { | |
18935 | *diep = NULL; | |
93311388 DE |
18936 | return info_ptr; |
18937 | } | |
18938 | ||
685af9cd | 18939 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18940 | if (!abbrev) |
348e048f DE |
18941 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18942 | abbrev_number, | |
18943 | bfd_get_filename (abfd)); | |
18944 | ||
3019eac3 | 18945 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18946 | die->sect_off = sect_off; |
93311388 DE |
18947 | die->tag = abbrev->tag; |
18948 | die->abbrev = abbrev_number; | |
3e225074 | 18949 | die->has_children = abbrev->has_children; |
93311388 | 18950 | |
3019eac3 DE |
18951 | /* Make the result usable. |
18952 | The caller needs to update num_attrs after adding the extra | |
18953 | attributes. */ | |
93311388 DE |
18954 | die->num_attrs = abbrev->num_attrs; |
18955 | ||
7a5f294d | 18956 | bool any_need_reprocess = false; |
93311388 | 18957 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 18958 | { |
7a5f294d TT |
18959 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18960 | info_ptr); | |
18961 | if (die->attrs[i].requires_reprocessing_p ()) | |
18962 | any_need_reprocess = true; | |
18a8505e AT |
18963 | } |
18964 | ||
052c8bb8 | 18965 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
18966 | if (attr != nullptr && attr->form_is_unsigned ()) |
18967 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 18968 | |
41144253 | 18969 | attr = die->attr (DW_AT_loclists_base); |
18970 | if (attr != nullptr) | |
529908cb | 18971 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 18972 | |
a39fdb41 | 18973 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18974 | if (maybe_addr_base.has_value ()) |
18975 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
18976 | |
18977 | attr = die->attr (DW_AT_rnglists_base); | |
18978 | if (attr != nullptr) | |
2b0c7f41 | 18979 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 18980 | |
7a5f294d TT |
18981 | if (any_need_reprocess) |
18982 | { | |
18983 | for (i = 0; i < abbrev->num_attrs; ++i) | |
18984 | { | |
18985 | if (die->attrs[i].requires_reprocessing_p ()) | |
18986 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
18987 | } | |
18988 | } | |
93311388 | 18989 | *diep = die; |
93311388 DE |
18990 | return info_ptr; |
18991 | } | |
18992 | ||
3019eac3 DE |
18993 | /* Read a die and all its attributes. |
18994 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18995 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18996 | |
d521ce57 | 18997 | static const gdb_byte * |
3019eac3 | 18998 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18999 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19000 | { |
d521ce57 | 19001 | const gdb_byte *result; |
bf6af496 | 19002 | |
3e225074 | 19003 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19004 | |
b4f54984 | 19005 | if (dwarf_die_debug) |
bf6af496 DE |
19006 | { |
19007 | fprintf_unfiltered (gdb_stdlog, | |
19008 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19009 | reader->die_section->get_name (), |
bf6af496 DE |
19010 | (unsigned) (info_ptr - reader->die_section->buffer), |
19011 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19012 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19013 | } |
19014 | ||
19015 | return result; | |
3019eac3 | 19016 | } |
433df2d4 | 19017 | \f |
c906108c | 19018 | |
72bf9492 DJ |
19019 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19020 | symbol for. */ | |
19021 | ||
19022 | static int | |
d8f62e84 | 19023 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19024 | { |
19025 | switch (tag) | |
19026 | { | |
19027 | #if 0 | |
19028 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19029 | that we don't at present. Note that normally this does not |
19030 | matter, mainly because C compilers don't give names to these | |
19031 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19032 | case DW_TAG_file_type: |
19033 | case DW_TAG_ptr_to_member_type: | |
19034 | case DW_TAG_set_type: | |
19035 | case DW_TAG_string_type: | |
19036 | case DW_TAG_subroutine_type: | |
19037 | #endif | |
d8f62e84 TT |
19038 | |
19039 | /* GNAT may emit an array with a name, but no typedef, so we | |
19040 | need to make a symbol in this case. */ | |
19041 | case DW_TAG_array_type: | |
19042 | return lang == language_ada; | |
19043 | ||
72bf9492 DJ |
19044 | case DW_TAG_base_type: |
19045 | case DW_TAG_class_type: | |
680b30c7 | 19046 | case DW_TAG_interface_type: |
72bf9492 DJ |
19047 | case DW_TAG_enumeration_type: |
19048 | case DW_TAG_structure_type: | |
19049 | case DW_TAG_subrange_type: | |
19050 | case DW_TAG_typedef: | |
19051 | case DW_TAG_union_type: | |
19052 | return 1; | |
19053 | default: | |
19054 | return 0; | |
19055 | } | |
19056 | } | |
19057 | ||
19058 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19059 | ||
19060 | static struct partial_die_info * | |
dee91e82 | 19061 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19062 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19063 | { |
dee91e82 | 19064 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19065 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19066 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19067 | unsigned int bytes_read; |
5afb4e99 | 19068 | unsigned int load_all = 0; |
72bf9492 DJ |
19069 | int nesting_level = 1; |
19070 | ||
19071 | parent_die = NULL; | |
19072 | last_die = NULL; | |
19073 | ||
7adf1e79 DE |
19074 | gdb_assert (cu->per_cu != NULL); |
19075 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19076 | load_all = 1; |
19077 | ||
72bf9492 DJ |
19078 | cu->partial_dies |
19079 | = htab_create_alloc_ex (cu->header.length / 12, | |
19080 | partial_die_hash, | |
19081 | partial_die_eq, | |
19082 | NULL, | |
19083 | &cu->comp_unit_obstack, | |
19084 | hashtab_obstack_allocate, | |
19085 | dummy_obstack_deallocate); | |
19086 | ||
72bf9492 DJ |
19087 | while (1) |
19088 | { | |
7c32eebb TT |
19089 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
19090 | &bytes_read); | |
72bf9492 DJ |
19091 | |
19092 | /* A NULL abbrev means the end of a series of children. */ | |
19093 | if (abbrev == NULL) | |
19094 | { | |
19095 | if (--nesting_level == 0) | |
cd9983dd YQ |
19096 | return first_die; |
19097 | ||
72bf9492 DJ |
19098 | info_ptr += bytes_read; |
19099 | last_die = parent_die; | |
19100 | parent_die = parent_die->die_parent; | |
19101 | continue; | |
19102 | } | |
19103 | ||
98bfdba5 PA |
19104 | /* Check for template arguments. We never save these; if |
19105 | they're seen, we just mark the parent, and go on our way. */ | |
19106 | if (parent_die != NULL | |
19107 | && cu->language == language_cplus | |
19108 | && (abbrev->tag == DW_TAG_template_type_param | |
19109 | || abbrev->tag == DW_TAG_template_value_param)) | |
19110 | { | |
19111 | parent_die->has_template_arguments = 1; | |
19112 | ||
19113 | if (!load_all) | |
19114 | { | |
19115 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19116 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19117 | continue; |
19118 | } | |
19119 | } | |
19120 | ||
0d99eb77 | 19121 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19122 | Skip their other children. */ |
19123 | if (!load_all | |
19124 | && cu->language == language_cplus | |
19125 | && parent_die != NULL | |
f9b5d5ea TV |
19126 | && parent_die->tag == DW_TAG_subprogram |
19127 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19128 | { |
dee91e82 | 19129 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19130 | continue; |
19131 | } | |
19132 | ||
5afb4e99 DJ |
19133 | /* Check whether this DIE is interesting enough to save. Normally |
19134 | we would not be interested in members here, but there may be | |
19135 | later variables referencing them via DW_AT_specification (for | |
19136 | static members). */ | |
19137 | if (!load_all | |
d8f62e84 | 19138 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19139 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19140 | && abbrev->tag != DW_TAG_enumerator |
19141 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19142 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19143 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19144 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19145 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19146 | && abbrev->tag != DW_TAG_module |
95554aad | 19147 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19148 | && abbrev->tag != DW_TAG_imported_unit |
19149 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19150 | { |
19151 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19152 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19153 | continue; |
19154 | } | |
19155 | ||
6f06d47b YQ |
19156 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19157 | abbrev); | |
cd9983dd | 19158 | |
48fbe735 | 19159 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19160 | |
19161 | /* This two-pass algorithm for processing partial symbols has a | |
19162 | high cost in cache pressure. Thus, handle some simple cases | |
19163 | here which cover the majority of C partial symbols. DIEs | |
19164 | which neither have specification tags in them, nor could have | |
19165 | specification tags elsewhere pointing at them, can simply be | |
19166 | processed and discarded. | |
19167 | ||
19168 | This segment is also optional; scan_partial_symbols and | |
19169 | add_partial_symbol will handle these DIEs if we chain | |
19170 | them in normally. When compilers which do not emit large | |
19171 | quantities of duplicate debug information are more common, | |
19172 | this code can probably be removed. */ | |
19173 | ||
19174 | /* Any complete simple types at the top level (pretty much all | |
19175 | of them, for a language without namespaces), can be processed | |
19176 | directly. */ | |
19177 | if (parent_die == NULL | |
cd9983dd YQ |
19178 | && pdi.has_specification == 0 |
19179 | && pdi.is_declaration == 0 | |
19180 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19181 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19182 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19183 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19184 | { |
7d00ffec | 19185 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19186 | add_partial_symbol (&pdi, cu); |
19187 | ||
cd9983dd | 19188 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19189 | continue; |
19190 | } | |
19191 | ||
d8228535 JK |
19192 | /* The exception for DW_TAG_typedef with has_children above is |
19193 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19194 | type_name_or_error will error on such types later. |
d8228535 JK |
19195 | |
19196 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19197 | it could not find the child DIEs referenced later, this is checked | |
19198 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19199 | ||
cd9983dd | 19200 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19201 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19202 | "- DIE at %s [in module %s]"), |
cd9983dd | 19203 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19204 | |
72bf9492 DJ |
19205 | /* If we're at the second level, and we're an enumerator, and |
19206 | our parent has no specification (meaning possibly lives in a | |
19207 | namespace elsewhere), then we can add the partial symbol now | |
19208 | instead of queueing it. */ | |
cd9983dd | 19209 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19210 | && parent_die != NULL |
19211 | && parent_die->die_parent == NULL | |
19212 | && parent_die->tag == DW_TAG_enumeration_type | |
19213 | && parent_die->has_specification == 0) | |
19214 | { | |
7d00ffec | 19215 | if (pdi.raw_name == NULL) |
b98664d3 | 19216 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19217 | else if (building_psymtab) |
f0fbb768 | 19218 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19219 | |
cd9983dd | 19220 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19221 | continue; |
19222 | } | |
19223 | ||
cd9983dd | 19224 | struct partial_die_info *part_die |
6f06d47b | 19225 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19226 | |
72bf9492 DJ |
19227 | /* We'll save this DIE so link it in. */ |
19228 | part_die->die_parent = parent_die; | |
19229 | part_die->die_sibling = NULL; | |
19230 | part_die->die_child = NULL; | |
19231 | ||
19232 | if (last_die && last_die == parent_die) | |
19233 | last_die->die_child = part_die; | |
19234 | else if (last_die) | |
19235 | last_die->die_sibling = part_die; | |
19236 | ||
19237 | last_die = part_die; | |
19238 | ||
19239 | if (first_die == NULL) | |
19240 | first_die = part_die; | |
19241 | ||
19242 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19243 | find interesting need to be in the hash table, because we | |
19244 | also have the parent/sibling/child chains; only those that we | |
19245 | might refer to by offset later during partial symbol reading. | |
19246 | ||
19247 | For now this means things that might have be the target of a | |
19248 | DW_AT_specification, DW_AT_abstract_origin, or | |
19249 | DW_AT_extension. DW_AT_extension will refer only to | |
19250 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19251 | many things under the function DIE, but we do not recurse | |
19252 | into function DIEs during partial symbol reading) and | |
19253 | possibly variables as well; DW_AT_specification refers to | |
19254 | declarations. Declarations ought to have the DW_AT_declaration | |
19255 | flag. It happens that GCC forgets to put it in sometimes, but | |
19256 | only for functions, not for types. | |
19257 | ||
19258 | Adding more things than necessary to the hash table is harmless | |
19259 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19260 | wasted time in find_partial_die, when we reread the compilation |
19261 | unit with load_all_dies set. */ | |
72bf9492 | 19262 | |
5afb4e99 | 19263 | if (load_all |
72929c62 | 19264 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19265 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19266 | || abbrev->tag == DW_TAG_variable |
19267 | || abbrev->tag == DW_TAG_namespace | |
19268 | || part_die->is_declaration) | |
19269 | { | |
19270 | void **slot; | |
19271 | ||
19272 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19273 | to_underlying (part_die->sect_off), |
19274 | INSERT); | |
72bf9492 DJ |
19275 | *slot = part_die; |
19276 | } | |
19277 | ||
72bf9492 | 19278 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19279 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19280 | languages we have to, so that we can get at method physnames |
19281 | to infer fully qualified class names, for DW_AT_specification, | |
19282 | and for C++ template arguments. For C++, we also look one level | |
19283 | inside functions to find template arguments (if the name of the | |
19284 | function does not already contain the template arguments). | |
bc30ff58 | 19285 | |
0a4b0913 AB |
19286 | For Ada and Fortran, we need to scan the children of subprograms |
19287 | and lexical blocks as well because these languages allow the | |
19288 | definition of nested entities that could be interesting for the | |
19289 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19290 | if (last_die->has_children |
5afb4e99 DJ |
19291 | && (load_all |
19292 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19293 | || last_die->tag == DW_TAG_module |
72bf9492 | 19294 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19295 | || (cu->language == language_cplus |
19296 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19297 | && (last_die->raw_name == NULL |
19298 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19299 | || (cu->language != language_c |
19300 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19301 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19302 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19303 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19304 | || ((cu->language == language_ada |
19305 | || cu->language == language_fortran) | |
bc30ff58 JB |
19306 | && (last_die->tag == DW_TAG_subprogram |
19307 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19308 | { |
19309 | nesting_level++; | |
19310 | parent_die = last_die; | |
19311 | continue; | |
19312 | } | |
19313 | ||
19314 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19315 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19316 | |
19317 | /* Back to the top, do it again. */ | |
19318 | } | |
19319 | } | |
19320 | ||
6f06d47b | 19321 | partial_die_info::partial_die_info (sect_offset sect_off_, |
7c32eebb | 19322 | const struct abbrev_info *abbrev) |
6f06d47b YQ |
19323 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) |
19324 | { | |
19325 | } | |
19326 | ||
7d00ffec TT |
19327 | /* See class definition. */ |
19328 | ||
19329 | const char * | |
19330 | partial_die_info::name (dwarf2_cu *cu) | |
19331 | { | |
19332 | if (!canonical_name && raw_name != nullptr) | |
19333 | { | |
19334 | struct objfile *objfile = cu->per_objfile->objfile; | |
19335 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19336 | canonical_name = 1; | |
19337 | } | |
19338 | ||
19339 | return raw_name; | |
19340 | } | |
19341 | ||
35cc7ed7 YQ |
19342 | /* Read a minimal amount of information into the minimal die structure. |
19343 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19344 | |
48fbe735 YQ |
19345 | const gdb_byte * |
19346 | partial_die_info::read (const struct die_reader_specs *reader, | |
19347 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19348 | { |
dee91e82 | 19349 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19350 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19351 | unsigned int i; |
c5aa993b | 19352 | int has_low_pc_attr = 0; |
c906108c | 19353 | int has_high_pc_attr = 0; |
91da1414 | 19354 | int high_pc_relative = 0; |
c906108c | 19355 | |
fd0a254f | 19356 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19357 | { |
e7da7f8f | 19358 | attribute attr; |
7a5f294d | 19359 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19360 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19361 | already been read at this point, so there is no need to wait until |
18a8505e | 19362 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19363 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19364 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19365 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19366 | partial symbol table. */ |
c906108c SS |
19367 | switch (attr.name) |
19368 | { | |
19369 | case DW_AT_name: | |
48fbe735 | 19370 | switch (tag) |
71c25dea TT |
19371 | { |
19372 | case DW_TAG_compile_unit: | |
95554aad | 19373 | case DW_TAG_partial_unit: |
348e048f | 19374 | case DW_TAG_type_unit: |
71c25dea TT |
19375 | /* Compilation units have a DW_AT_name that is a filename, not |
19376 | a source language identifier. */ | |
19377 | case DW_TAG_enumeration_type: | |
19378 | case DW_TAG_enumerator: | |
19379 | /* These tags always have simple identifiers already; no need | |
19380 | to canonicalize them. */ | |
7d00ffec | 19381 | canonical_name = 1; |
2c830f54 | 19382 | raw_name = attr.as_string (); |
71c25dea TT |
19383 | break; |
19384 | default: | |
7d00ffec | 19385 | canonical_name = 0; |
2c830f54 | 19386 | raw_name = attr.as_string (); |
71c25dea TT |
19387 | break; |
19388 | } | |
c906108c | 19389 | break; |
31ef98ae | 19390 | case DW_AT_linkage_name: |
c906108c | 19391 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19392 | /* Note that both forms of linkage name might appear. We |
19393 | assume they will be the same, and we only store the last | |
19394 | one we see. */ | |
95f982e5 | 19395 | linkage_name = attr.as_string (); |
c906108c SS |
19396 | break; |
19397 | case DW_AT_low_pc: | |
19398 | has_low_pc_attr = 1; | |
95f982e5 | 19399 | lowpc = attr.as_address (); |
c906108c SS |
19400 | break; |
19401 | case DW_AT_high_pc: | |
19402 | has_high_pc_attr = 1; | |
95f982e5 | 19403 | highpc = attr.as_address (); |
cd6c91b4 | 19404 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19405 | high_pc_relative = 1; |
c906108c SS |
19406 | break; |
19407 | case DW_AT_location: | |
dda83cd7 SM |
19408 | /* Support the .debug_loc offsets. */ |
19409 | if (attr.form_is_block ()) | |
19410 | { | |
9d2246fc | 19411 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19412 | } |
19413 | else if (attr.form_is_section_offset ()) | |
19414 | { | |
4d3c2250 | 19415 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19416 | } |
19417 | else | |
19418 | { | |
4d3c2250 KB |
19419 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19420 | "partial symbol information"); | |
dda83cd7 | 19421 | } |
c906108c | 19422 | break; |
c906108c | 19423 | case DW_AT_external: |
c45bc3f8 | 19424 | is_external = attr.as_boolean (); |
c906108c SS |
19425 | break; |
19426 | case DW_AT_declaration: | |
c45bc3f8 | 19427 | is_declaration = attr.as_boolean (); |
c906108c SS |
19428 | break; |
19429 | case DW_AT_type: | |
48fbe735 | 19430 | has_type = 1; |
c906108c SS |
19431 | break; |
19432 | case DW_AT_abstract_origin: | |
19433 | case DW_AT_specification: | |
72bf9492 | 19434 | case DW_AT_extension: |
48fbe735 | 19435 | has_specification = 1; |
0826b30a | 19436 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19437 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19438 | || cu->per_cu->is_dwz); |
c906108c SS |
19439 | break; |
19440 | case DW_AT_sibling: | |
19441 | /* Ignore absolute siblings, they might point outside of | |
19442 | the current compile unit. */ | |
19443 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19444 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19445 | else |
b9502d3f | 19446 | { |
48fbe735 | 19447 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19448 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19449 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19450 | |
19451 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19452 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19453 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19454 | reader->die_section->overflow_complaint (); |
b9502d3f | 19455 | else |
48fbe735 | 19456 | sibling = sibling_ptr; |
b9502d3f | 19457 | } |
c906108c | 19458 | break; |
dda83cd7 SM |
19459 | case DW_AT_byte_size: |
19460 | has_byte_size = 1; | |
19461 | break; | |
19462 | case DW_AT_const_value: | |
19463 | has_const_value = 1; | |
19464 | break; | |
68511cec CES |
19465 | case DW_AT_calling_convention: |
19466 | /* DWARF doesn't provide a way to identify a program's source-level | |
19467 | entry point. DW_AT_calling_convention attributes are only meant | |
19468 | to describe functions' calling conventions. | |
19469 | ||
19470 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19471 | Fortran, and before DWARF 4 DW_CC_program was the only |
19472 | piece of debugging information whose definition refers to | |
19473 | a 'main program' at all, several compilers marked Fortran | |
19474 | main programs with DW_CC_program --- even when those | |
19475 | functions use the standard calling conventions. | |
19476 | ||
19477 | Although DWARF now specifies a way to provide this | |
19478 | information, we support this practice for backward | |
19479 | compatibility. */ | |
529908cb | 19480 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19481 | && cu->language == language_fortran) |
48fbe735 | 19482 | main_subprogram = 1; |
68511cec | 19483 | break; |
481860b3 | 19484 | case DW_AT_inline: |
529908cb TT |
19485 | { |
19486 | LONGEST value = attr.constant_value (-1); | |
19487 | if (value == DW_INL_inlined | |
19488 | || value == DW_INL_declared_inlined) | |
19489 | may_be_inlined = 1; | |
19490 | } | |
481860b3 | 19491 | break; |
95554aad TT |
19492 | |
19493 | case DW_AT_import: | |
48fbe735 | 19494 | if (tag == DW_TAG_imported_unit) |
36586728 | 19495 | { |
0826b30a | 19496 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19497 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19498 | || cu->per_cu->is_dwz); |
19499 | } | |
95554aad TT |
19500 | break; |
19501 | ||
0c1b455e | 19502 | case DW_AT_main_subprogram: |
c45bc3f8 | 19503 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19504 | break; |
19505 | ||
05caa1d2 TT |
19506 | case DW_AT_ranges: |
19507 | { | |
2b0c7f41 SM |
19508 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19509 | on DWARF version). */ | |
19510 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19511 | ||
19512 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
19513 | this value. */ | |
19514 | if (tag != DW_TAG_compile_unit) | |
19515 | ranges_offset += cu->gnu_ranges_base; | |
19516 | ||
05caa1d2 | 19517 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 19518 | nullptr, tag)) |
05caa1d2 TT |
19519 | has_pc_info = 1; |
19520 | } | |
19521 | break; | |
19522 | ||
c906108c SS |
19523 | default: |
19524 | break; | |
19525 | } | |
19526 | } | |
19527 | ||
10d06d82 TT |
19528 | /* For Ada, if both the name and the linkage name appear, we prefer |
19529 | the latter. This lets "catch exception" work better, regardless | |
19530 | of the order in which the name and linkage name were emitted. | |
19531 | Really, though, this is just a workaround for the fact that gdb | |
19532 | doesn't store both the name and the linkage name. */ | |
19533 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19534 | raw_name = linkage_name; |
10d06d82 | 19535 | |
91da1414 | 19536 | if (high_pc_relative) |
48fbe735 | 19537 | highpc += lowpc; |
91da1414 | 19538 | |
9373cf26 JK |
19539 | if (has_low_pc_attr && has_high_pc_attr) |
19540 | { | |
19541 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19542 | eliminate duplicate copies of functions and vtables and such. | |
19543 | The linker will arbitrarily choose one and discard the others. | |
19544 | The AT_*_pc values for such functions refer to local labels in | |
19545 | these sections. If the section from that file was discarded, the | |
19546 | labels are not in the output, so the relocs get a value of 0. | |
19547 | If this is a discarded function, mark the pc bounds as invalid, | |
19548 | so that GDB will ignore it. */ | |
976ca316 | 19549 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19550 | { |
976ca316 | 19551 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19552 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19553 | |
b98664d3 | 19554 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19555 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19556 | paddress (gdbarch, lowpc), |
19557 | sect_offset_str (sect_off), | |
9d8780f0 | 19558 | objfile_name (objfile)); |
9373cf26 JK |
19559 | } |
19560 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19561 | else if (lowpc >= highpc) |
9373cf26 | 19562 | { |
976ca316 | 19563 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19564 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19565 | |
b98664d3 | 19566 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19567 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19568 | paddress (gdbarch, lowpc), |
19569 | paddress (gdbarch, highpc), | |
19570 | sect_offset_str (sect_off), | |
9c541725 | 19571 | objfile_name (objfile)); |
9373cf26 JK |
19572 | } |
19573 | else | |
48fbe735 | 19574 | has_pc_info = 1; |
9373cf26 | 19575 | } |
85cbf3d3 | 19576 | |
c906108c SS |
19577 | return info_ptr; |
19578 | } | |
19579 | ||
72bf9492 DJ |
19580 | /* Find a cached partial DIE at OFFSET in CU. */ |
19581 | ||
d590ff25 YQ |
19582 | struct partial_die_info * |
19583 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19584 | { |
19585 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19586 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19587 | |
9a3c8263 | 19588 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19589 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19590 | to_underlying (sect_off))); |
72bf9492 | 19591 | |
72bf9492 DJ |
19592 | return lookup_die; |
19593 | } | |
19594 | ||
348e048f DE |
19595 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19596 | except in the case of .debug_types DIEs which do not reference | |
19597 | outside their CU (they do however referencing other types via | |
55f1336d | 19598 | DW_FORM_ref_sig8). */ |
72bf9492 | 19599 | |
122cf0f2 | 19600 | static const struct cu_partial_die_info |
9c541725 | 19601 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19602 | { |
976ca316 SM |
19603 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19604 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19605 | struct partial_die_info *pd = NULL; |
72bf9492 | 19606 | |
36586728 | 19607 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19608 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19609 | { |
d590ff25 | 19610 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19611 | if (pd != NULL) |
fb816e8b | 19612 | return { cu, pd }; |
0d99eb77 DE |
19613 | /* We missed recording what we needed. |
19614 | Load all dies and try again. */ | |
5afb4e99 | 19615 | } |
0d99eb77 DE |
19616 | else |
19617 | { | |
19618 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19619 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19620 | { |
9d8780f0 SM |
19621 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19622 | " external reference to offset %s [in module %s].\n"), | |
19623 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19624 | bfd_get_filename (objfile->obfd)); |
19625 | } | |
7188ed02 SM |
19626 | dwarf2_per_cu_data *per_cu |
19627 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19628 | per_objfile); |
72bf9492 | 19629 | |
976ca316 | 19630 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19631 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19632 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19633 | |
976ca316 | 19634 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19635 | |
19636 | cu->last_used = 0; | |
19637 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19638 | } |
5afb4e99 | 19639 | |
dee91e82 DE |
19640 | /* If we didn't find it, and not all dies have been loaded, |
19641 | load them all and try again. */ | |
19642 | ||
7188ed02 | 19643 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19644 | { |
7188ed02 | 19645 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19646 | |
19647 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19648 | THIS_CU->cu may already be in use. So we can't just free it and | |
19649 | replace its DIEs with the ones we read in. Instead, we leave those | |
19650 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19651 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19652 | set. */ | |
976ca316 | 19653 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19654 | |
7188ed02 | 19655 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19656 | } |
19657 | ||
19658 | if (pd == NULL) | |
521894aa | 19659 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19660 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19661 | return { cu, pd }; |
72bf9492 DJ |
19662 | } |
19663 | ||
abc72ce4 DE |
19664 | /* See if we can figure out if the class lives in a namespace. We do |
19665 | this by looking for a member function; its demangled name will | |
19666 | contain namespace info, if there is any. */ | |
19667 | ||
19668 | static void | |
19669 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19670 | struct dwarf2_cu *cu) | |
19671 | { | |
19672 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19673 | what template types look like, because the demangler | |
19674 | frequently doesn't give the same name as the debug info. We | |
19675 | could fix this by only using the demangled name to get the | |
19676 | prefix (but see comment in read_structure_type). */ | |
19677 | ||
19678 | struct partial_die_info *real_pdi; | |
19679 | struct partial_die_info *child_pdi; | |
19680 | ||
19681 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19682 | we should not do this. We'll prepend the parent's fully qualified | |
19683 | name when we create the partial symbol. */ | |
19684 | ||
19685 | real_pdi = struct_pdi; | |
19686 | while (real_pdi->has_specification) | |
fb816e8b | 19687 | { |
122cf0f2 AB |
19688 | auto res = find_partial_die (real_pdi->spec_offset, |
19689 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19690 | real_pdi = res.pdi; |
19691 | cu = res.cu; | |
19692 | } | |
abc72ce4 DE |
19693 | |
19694 | if (real_pdi->die_parent != NULL) | |
19695 | return; | |
19696 | ||
19697 | for (child_pdi = struct_pdi->die_child; | |
19698 | child_pdi != NULL; | |
19699 | child_pdi = child_pdi->die_sibling) | |
19700 | { | |
19701 | if (child_pdi->tag == DW_TAG_subprogram | |
19702 | && child_pdi->linkage_name != NULL) | |
19703 | { | |
43816ebc | 19704 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19705 | (cu->language_defn->class_name_from_physname |
19706 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19707 | if (actual_class_name != NULL) |
19708 | { | |
5e22e966 | 19709 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19710 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19711 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19712 | } |
19713 | break; | |
19714 | } | |
19715 | } | |
19716 | } | |
19717 | ||
25c11aca TV |
19718 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19719 | attribute. */ | |
19720 | ||
19721 | static bool | |
19722 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19723 | { | |
19724 | switch (tag) | |
19725 | { | |
19726 | case DW_TAG_constant: | |
19727 | case DW_TAG_enumerator: | |
19728 | case DW_TAG_formal_parameter: | |
19729 | case DW_TAG_template_value_param: | |
19730 | case DW_TAG_variable: | |
19731 | return true; | |
19732 | } | |
19733 | ||
19734 | return false; | |
19735 | } | |
19736 | ||
52356b79 YQ |
19737 | void |
19738 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19739 | { |
abc72ce4 DE |
19740 | /* Once we've fixed up a die, there's no point in doing so again. |
19741 | This also avoids a memory leak if we were to call | |
19742 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19743 | if (fixup_called) |
abc72ce4 DE |
19744 | return; |
19745 | ||
72bf9492 DJ |
19746 | /* If we found a reference attribute and the DIE has no name, try |
19747 | to find a name in the referred to DIE. */ | |
19748 | ||
7d00ffec | 19749 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19750 | { |
19751 | struct partial_die_info *spec_die; | |
72bf9492 | 19752 | |
122cf0f2 | 19753 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19754 | spec_die = res.pdi; |
19755 | cu = res.cu; | |
72bf9492 | 19756 | |
52356b79 | 19757 | spec_die->fixup (cu); |
72bf9492 | 19758 | |
7d00ffec | 19759 | if (spec_die->raw_name) |
72bf9492 | 19760 | { |
7d00ffec TT |
19761 | raw_name = spec_die->raw_name; |
19762 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19763 | |
19764 | /* Copy DW_AT_external attribute if it is set. */ | |
19765 | if (spec_die->is_external) | |
52356b79 | 19766 | is_external = spec_die->is_external; |
72bf9492 DJ |
19767 | } |
19768 | } | |
19769 | ||
25c11aca TV |
19770 | if (!has_const_value && has_specification |
19771 | && can_have_DW_AT_const_value_p (tag)) | |
19772 | { | |
19773 | struct partial_die_info *spec_die; | |
19774 | ||
19775 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19776 | spec_die = res.pdi; | |
19777 | cu = res.cu; | |
19778 | ||
19779 | spec_die->fixup (cu); | |
19780 | ||
19781 | if (spec_die->has_const_value) | |
19782 | { | |
19783 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19784 | has_const_value = spec_die->has_const_value; | |
19785 | } | |
19786 | } | |
19787 | ||
72bf9492 | 19788 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19789 | |
7d00ffec TT |
19790 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19791 | { | |
19792 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19793 | canonical_name = 1; | |
19794 | } | |
72bf9492 | 19795 | |
abc72ce4 DE |
19796 | /* If there is no parent die to provide a namespace, and there are |
19797 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19798 | name. */ |
abc72ce4 | 19799 | if (cu->language == language_cplus |
5e22e966 | 19800 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19801 | && die_parent == NULL |
19802 | && has_children | |
19803 | && (tag == DW_TAG_class_type | |
19804 | || tag == DW_TAG_structure_type | |
19805 | || tag == DW_TAG_union_type)) | |
19806 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19807 | |
53832f31 TT |
19808 | /* GCC might emit a nameless struct or union that has a linkage |
19809 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19810 | if (raw_name == NULL |
52356b79 YQ |
19811 | && (tag == DW_TAG_class_type |
19812 | || tag == DW_TAG_interface_type | |
19813 | || tag == DW_TAG_structure_type | |
19814 | || tag == DW_TAG_union_type) | |
19815 | && linkage_name != NULL) | |
53832f31 | 19816 | { |
43816ebc TT |
19817 | gdb::unique_xmalloc_ptr<char> demangled |
19818 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19819 | if (demangled != nullptr) | |
53832f31 | 19820 | { |
96408a79 SA |
19821 | const char *base; |
19822 | ||
19823 | /* Strip any leading namespaces/classes, keep only the base name. | |
19824 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19825 | base = strrchr (demangled.get (), ':'); |
19826 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19827 | base++; |
19828 | else | |
43816ebc | 19829 | base = demangled.get (); |
96408a79 | 19830 | |
5e22e966 | 19831 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19832 | raw_name = objfile->intern (base); |
19833 | canonical_name = 1; | |
53832f31 TT |
19834 | } |
19835 | } | |
19836 | ||
52356b79 | 19837 | fixup_called = 1; |
72bf9492 DJ |
19838 | } |
19839 | ||
d0ce17d8 | 19840 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
19841 | contents from the given SECTION in the HEADER. |
19842 | ||
19843 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 19844 | static void |
d0ce17d8 | 19845 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
19846 | struct dwarf2_section_info *section, |
19847 | sect_offset header_offset) | |
41144253 | 19848 | { |
19849 | unsigned int bytes_read; | |
19850 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
19851 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
19852 | ||
41144253 | 19853 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
19854 | info_ptr += bytes_read; | |
a1c40103 | 19855 | |
41144253 | 19856 | header->version = read_2_bytes (abfd, info_ptr); |
19857 | info_ptr += 2; | |
a1c40103 | 19858 | |
41144253 | 19859 | header->addr_size = read_1_byte (abfd, info_ptr); |
19860 | info_ptr += 1; | |
a1c40103 | 19861 | |
41144253 | 19862 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
19863 | info_ptr += 1; | |
a1c40103 | 19864 | |
41144253 | 19865 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
19866 | } | |
19867 | ||
19868 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19869 | static ULONGEST | |
19870 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19871 | { | |
19872 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19873 | the header. The header consists of the following entities- | |
19874 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19875 | bit format) | |
19876 | 2. version (2 bytes) | |
19877 | 3. address size (1 byte) | |
19878 | 4. segment selector size (1 byte) | |
19879 | 5. offset entry count (4 bytes) | |
19880 | These sizes are derived as per the DWARFv5 standard. */ | |
19881 | if (cu->dwo_unit != nullptr) | |
19882 | { | |
19883 | if (cu->header.initial_length_size == 4) | |
19884 | return LOCLIST_HEADER_SIZE32; | |
19885 | return LOCLIST_HEADER_SIZE64; | |
19886 | } | |
19887 | return cu->loclist_base; | |
19888 | } | |
19889 | ||
19890 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19891 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
19892 | |
19893 | static sect_offset | |
41144253 | 19894 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
19895 | { | |
976ca316 SM |
19896 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19897 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19898 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
19899 | ULONGEST loclist_header_size = |
19900 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
19901 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 19902 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
19903 | |
19904 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
19905 | ULONGEST start_offset = | |
19906 | loclist_base + loclist_index * cu->header.offset_size; | |
19907 | ||
a1c40103 | 19908 | /* Get loclists section. */ |
41144253 | 19909 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
19910 | ||
a1c40103 | 19911 | /* Read the loclists section content. */ |
41144253 | 19912 | section->read (objfile); |
19913 | if (section->buffer == NULL) | |
a0c1eeba SM |
19914 | error (_("DW_FORM_loclistx used without .debug_loclists " |
19915 | "section [in module %s]"), objfile_name (objfile)); | |
19916 | ||
a1c40103 SM |
19917 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
19918 | so if loclist_base is smaller than the header size, we have a problem. */ | |
19919 | if (loclist_base < loclist_header_size) | |
19920 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
19921 | objfile_name (objfile)); | |
19922 | ||
19923 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 19924 | struct loclists_rnglists_header header; |
a1c40103 SM |
19925 | read_loclists_rnglists_header (&header, section, |
19926 | (sect_offset) (loclist_base - loclist_header_size)); | |
19927 | ||
19928 | /* Verify the loclist index is valid. */ | |
41144253 | 19929 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
19930 | error (_("DW_FORM_loclistx pointing outside of " |
19931 | ".debug_loclists offset array [in module %s]"), | |
19932 | objfile_name (objfile)); | |
19933 | ||
05787bad SM |
19934 | /* Validate that reading won't go beyond the end of the section. */ |
19935 | if (start_offset + cu->header.offset_size > section->size) | |
19936 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
19937 | ".debug_loclists section [in module %s]"), | |
19938 | objfile_name (objfile)); | |
19939 | ||
19940 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 19941 | |
19942 | if (cu->header.offset_size == 4) | |
e57933dc | 19943 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 19944 | else |
e57933dc | 19945 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 19946 | } |
19947 | ||
d0ce17d8 CT |
19948 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
19949 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
19950 | |
19951 | static sect_offset | |
d0ce17d8 CT |
19952 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
19953 | dwarf_tag tag) | |
19954 | { | |
19955 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
19956 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19957 | bfd *abfd = objfile->obfd; | |
19958 | ULONGEST rnglist_header_size = | |
19959 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
19960 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
19961 | |
19962 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
19963 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
19964 | doesn't apply. */ | |
d0ce17d8 | 19965 | ULONGEST rnglist_base = |
2b0c7f41 | 19966 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
19967 | |
19968 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
19969 | ULONGEST start_offset = |
19970 | rnglist_base + rnglist_index * cu->header.offset_size; | |
19971 | ||
19972 | /* Get rnglists section. */ | |
19973 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
19974 | ||
19975 | /* Read the rnglists section content. */ | |
19976 | section->read (objfile); | |
19977 | if (section->buffer == nullptr) | |
19978 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
19979 | "[in module %s]"), | |
19980 | objfile_name (objfile)); | |
19981 | ||
a1c40103 SM |
19982 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
19983 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
19984 | if (rnglist_base < rnglist_header_size) | |
19985 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
19986 | objfile_name (objfile)); | |
19987 | ||
19988 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 19989 | struct loclists_rnglists_header header; |
a1c40103 SM |
19990 | read_loclists_rnglists_header (&header, section, |
19991 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
19992 | ||
19993 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
19994 | if (rnglist_index >= header.offset_entry_count) |
19995 | error (_("DW_FORM_rnglistx index pointing outside of " | |
19996 | ".debug_rnglists offset array [in module %s]"), | |
19997 | objfile_name (objfile)); | |
19998 | ||
d0ce17d8 | 19999 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20000 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20001 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20002 | ".debug_rnglists section [in module %s]"), | |
20003 | objfile_name (objfile)); | |
20004 | ||
20005 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20006 | ||
20007 | if (cu->header.offset_size == 4) | |
e57933dc | 20008 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20009 | else |
e57933dc | 20010 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20011 | } |
20012 | ||
18a8505e AT |
20013 | /* Process the attributes that had to be skipped in the first round. These |
20014 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20015 | They could not have been processed in the first round, because at the time | |
20016 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20017 | static void |
20018 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20019 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20020 | { |
20021 | struct dwarf2_cu *cu = reader->cu; | |
20022 | switch (attr->form) | |
20023 | { | |
20024 | case DW_FORM_addrx: | |
20025 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20026 | attr->set_address (read_addr_index (cu, |
20027 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20028 | break; |
41144253 | 20029 | case DW_FORM_loclistx: |
b1829e1b | 20030 | { |
e57933dc | 20031 | sect_offset loclists_sect_off |
b1829e1b SM |
20032 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20033 | ||
e57933dc | 20034 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20035 | } |
20036 | break; | |
d0ce17d8 | 20037 | case DW_FORM_rnglistx: |
b1829e1b | 20038 | { |
e57933dc | 20039 | sect_offset rnglists_sect_off |
b1829e1b SM |
20040 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20041 | ||
e57933dc | 20042 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20043 | } |
dda83cd7 | 20044 | break; |
18a8505e AT |
20045 | case DW_FORM_strx: |
20046 | case DW_FORM_strx1: | |
20047 | case DW_FORM_strx2: | |
20048 | case DW_FORM_strx3: | |
20049 | case DW_FORM_strx4: | |
20050 | case DW_FORM_GNU_str_index: | |
20051 | { | |
fe56917a | 20052 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20053 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20054 | if (reader->dwo_file != NULL) |
c6481205 TT |
20055 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20056 | str_index)); | |
18a8505e | 20057 | else |
c6481205 TT |
20058 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20059 | str_index)); | |
18a8505e AT |
20060 | break; |
20061 | } | |
20062 | default: | |
20063 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20064 | } | |
20065 | } | |
20066 | ||
a8329558 | 20067 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20068 | |
d521ce57 | 20069 | static const gdb_byte * |
dee91e82 DE |
20070 | read_attribute_value (const struct die_reader_specs *reader, |
20071 | struct attribute *attr, unsigned form, | |
7a5f294d | 20072 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20073 | { |
dee91e82 | 20074 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20075 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20076 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20077 | bfd *abfd = reader->abfd; |
e7c27a73 | 20078 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20079 | unsigned int bytes_read; |
20080 | struct dwarf_block *blk; | |
20081 | ||
aead7601 | 20082 | attr->form = (enum dwarf_form) form; |
a8329558 | 20083 | switch (form) |
c906108c | 20084 | { |
c906108c | 20085 | case DW_FORM_ref_addr: |
7c290a04 TT |
20086 | if (cu_header->version == 2) |
20087 | attr->set_unsigned (cu_header->read_address (abfd, info_ptr, | |
414ad644 | 20088 | &bytes_read)); |
ae411497 | 20089 | else |
7c290a04 | 20090 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20091 | &bytes_read)); |
ae411497 TT |
20092 | info_ptr += bytes_read; |
20093 | break; | |
36586728 | 20094 | case DW_FORM_GNU_ref_alt: |
7c290a04 | 20095 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20096 | &bytes_read)); |
36586728 TT |
20097 | info_ptr += bytes_read; |
20098 | break; | |
ae411497 | 20099 | case DW_FORM_addr: |
08feed99 TT |
20100 | { |
20101 | struct gdbarch *gdbarch = objfile->arch (); | |
7c290a04 | 20102 | CORE_ADDR addr = cu_header->read_address (abfd, info_ptr, &bytes_read); |
36d378cf TT |
20103 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); |
20104 | attr->set_address (addr); | |
08feed99 TT |
20105 | info_ptr += bytes_read; |
20106 | } | |
c906108c SS |
20107 | break; |
20108 | case DW_FORM_block2: | |
7b5a2f43 | 20109 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20110 | blk->size = read_2_bytes (abfd, info_ptr); |
20111 | info_ptr += 2; | |
20112 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20113 | info_ptr += blk->size; | |
9d2246fc | 20114 | attr->set_block (blk); |
c906108c SS |
20115 | break; |
20116 | case DW_FORM_block4: | |
7b5a2f43 | 20117 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20118 | blk->size = read_4_bytes (abfd, info_ptr); |
20119 | info_ptr += 4; | |
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_data2: | |
414ad644 | 20125 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20126 | info_ptr += 2; |
20127 | break; | |
20128 | case DW_FORM_data4: | |
414ad644 | 20129 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20130 | info_ptr += 4; |
20131 | break; | |
20132 | case DW_FORM_data8: | |
414ad644 | 20133 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20134 | info_ptr += 8; |
20135 | break; | |
0224619f JK |
20136 | case DW_FORM_data16: |
20137 | blk = dwarf_alloc_block (cu); | |
20138 | blk->size = 16; | |
20139 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20140 | info_ptr += 16; | |
9d2246fc | 20141 | attr->set_block (blk); |
0224619f | 20142 | break; |
2dc7f7b3 | 20143 | case DW_FORM_sec_offset: |
7c290a04 | 20144 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20145 | &bytes_read)); |
2dc7f7b3 TT |
20146 | info_ptr += bytes_read; |
20147 | break; | |
41144253 | 20148 | case DW_FORM_loclistx: |
20149 | { | |
7a5f294d TT |
20150 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20151 | &bytes_read)); | |
20152 | info_ptr += bytes_read; | |
41144253 | 20153 | } |
20154 | break; | |
c906108c | 20155 | case DW_FORM_string: |
c6481205 TT |
20156 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20157 | &bytes_read)); | |
c906108c SS |
20158 | info_ptr += bytes_read; |
20159 | break; | |
4bdf3d34 | 20160 | case DW_FORM_strp: |
36586728 TT |
20161 | if (!cu->per_cu->is_dwz) |
20162 | { | |
c6481205 TT |
20163 | attr->set_string_noncanonical |
20164 | (read_indirect_string (per_objfile, | |
20165 | abfd, info_ptr, cu_header, | |
20166 | &bytes_read)); | |
36586728 TT |
20167 | info_ptr += bytes_read; |
20168 | break; | |
20169 | } | |
20170 | /* FALLTHROUGH */ | |
43988095 JK |
20171 | case DW_FORM_line_strp: |
20172 | if (!cu->per_cu->is_dwz) | |
20173 | { | |
c6481205 TT |
20174 | attr->set_string_noncanonical |
20175 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20176 | &bytes_read)); | |
43988095 JK |
20177 | info_ptr += bytes_read; |
20178 | break; | |
20179 | } | |
20180 | /* FALLTHROUGH */ | |
36586728 TT |
20181 | case DW_FORM_GNU_strp_alt: |
20182 | { | |
a7308ce0 | 20183 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
8266302d TT |
20184 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20185 | &bytes_read); | |
36586728 | 20186 | |
c6481205 TT |
20187 | attr->set_string_noncanonical |
20188 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20189 | info_ptr += bytes_read; |
20190 | } | |
4bdf3d34 | 20191 | break; |
2dc7f7b3 | 20192 | case DW_FORM_exprloc: |
c906108c | 20193 | case DW_FORM_block: |
7b5a2f43 | 20194 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20195 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20196 | info_ptr += bytes_read; | |
20197 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20198 | info_ptr += blk->size; | |
9d2246fc | 20199 | attr->set_block (blk); |
c906108c SS |
20200 | break; |
20201 | case DW_FORM_block1: | |
7b5a2f43 | 20202 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20203 | blk->size = read_1_byte (abfd, info_ptr); |
20204 | info_ptr += 1; | |
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_data1: | |
c906108c | 20210 | case DW_FORM_flag: |
414ad644 | 20211 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20212 | info_ptr += 1; |
20213 | break; | |
2dc7f7b3 | 20214 | case DW_FORM_flag_present: |
414ad644 | 20215 | attr->set_unsigned (1); |
2dc7f7b3 | 20216 | break; |
c906108c | 20217 | case DW_FORM_sdata: |
1bc397c5 | 20218 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20219 | info_ptr += bytes_read; |
20220 | break; | |
18a8505e | 20221 | case DW_FORM_rnglistx: |
7a5f294d TT |
20222 | { |
20223 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20224 | &bytes_read)); | |
20225 | info_ptr += bytes_read; | |
20226 | } | |
20227 | break; | |
d0ce17d8 | 20228 | case DW_FORM_udata: |
414ad644 | 20229 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20230 | info_ptr += bytes_read; |
20231 | break; | |
20232 | case DW_FORM_ref1: | |
7c290a04 | 20233 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20234 | + read_1_byte (abfd, info_ptr))); |
c906108c SS |
20235 | info_ptr += 1; |
20236 | break; | |
20237 | case DW_FORM_ref2: | |
7c290a04 | 20238 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20239 | + read_2_bytes (abfd, info_ptr))); |
c906108c SS |
20240 | info_ptr += 2; |
20241 | break; | |
20242 | case DW_FORM_ref4: | |
7c290a04 | 20243 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20244 | + read_4_bytes (abfd, info_ptr))); |
c906108c SS |
20245 | info_ptr += 4; |
20246 | break; | |
613e1657 | 20247 | case DW_FORM_ref8: |
7c290a04 | 20248 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20249 | + read_8_bytes (abfd, info_ptr))); |
613e1657 KB |
20250 | info_ptr += 8; |
20251 | break; | |
55f1336d | 20252 | case DW_FORM_ref_sig8: |
630ed6b9 | 20253 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20254 | info_ptr += 8; |
20255 | break; | |
c906108c | 20256 | case DW_FORM_ref_udata: |
7c290a04 | 20257 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 TT |
20258 | + read_unsigned_leb128 (abfd, info_ptr, |
20259 | &bytes_read))); | |
c906108c SS |
20260 | info_ptr += bytes_read; |
20261 | break; | |
c906108c | 20262 | case DW_FORM_indirect: |
a8329558 KW |
20263 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20264 | info_ptr += bytes_read; | |
43988095 JK |
20265 | if (form == DW_FORM_implicit_const) |
20266 | { | |
20267 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20268 | info_ptr += bytes_read; | |
20269 | } | |
20270 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20271 | info_ptr); |
43988095 JK |
20272 | break; |
20273 | case DW_FORM_implicit_const: | |
1bc397c5 | 20274 | attr->set_signed (implicit_const); |
a8329558 | 20275 | break; |
336d760d | 20276 | case DW_FORM_addrx: |
3019eac3 | 20277 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20278 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20279 | &bytes_read)); | |
3019eac3 DE |
20280 | info_ptr += bytes_read; |
20281 | break; | |
cf532bd1 | 20282 | case DW_FORM_strx: |
15f18d14 AT |
20283 | case DW_FORM_strx1: |
20284 | case DW_FORM_strx2: | |
20285 | case DW_FORM_strx3: | |
20286 | case DW_FORM_strx4: | |
3019eac3 | 20287 | case DW_FORM_GNU_str_index: |
3019eac3 | 20288 | { |
15f18d14 AT |
20289 | ULONGEST str_index; |
20290 | if (form == DW_FORM_strx1) | |
20291 | { | |
20292 | str_index = read_1_byte (abfd, info_ptr); | |
20293 | info_ptr += 1; | |
20294 | } | |
20295 | else if (form == DW_FORM_strx2) | |
20296 | { | |
20297 | str_index = read_2_bytes (abfd, info_ptr); | |
20298 | info_ptr += 2; | |
20299 | } | |
20300 | else if (form == DW_FORM_strx3) | |
20301 | { | |
20302 | str_index = read_3_bytes (abfd, info_ptr); | |
20303 | info_ptr += 3; | |
20304 | } | |
20305 | else if (form == DW_FORM_strx4) | |
20306 | { | |
20307 | str_index = read_4_bytes (abfd, info_ptr); | |
20308 | info_ptr += 4; | |
20309 | } | |
20310 | else | |
20311 | { | |
20312 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20313 | info_ptr += bytes_read; | |
20314 | } | |
fe56917a | 20315 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20316 | } |
3019eac3 | 20317 | break; |
c906108c | 20318 | default: |
8a3fe4f8 | 20319 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20320 | dwarf_form_name (form), |
20321 | bfd_get_filename (abfd)); | |
c906108c | 20322 | } |
28e94949 | 20323 | |
36586728 | 20324 | /* Super hack. */ |
cd6c91b4 | 20325 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20326 | attr->form = DW_FORM_GNU_ref_alt; |
20327 | ||
28e94949 JB |
20328 | /* We have seen instances where the compiler tried to emit a byte |
20329 | size attribute of -1 which ended up being encoded as an unsigned | |
20330 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20331 | an object of this size seems pretty unlikely so we can relatively | |
20332 | safely treat these cases as if the size attribute was invalid and | |
20333 | treat them as zero by default. */ | |
20334 | if (attr->name == DW_AT_byte_size | |
20335 | && form == DW_FORM_data4 | |
529908cb | 20336 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20337 | { |
20338 | complaint | |
dda83cd7 SM |
20339 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20340 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20341 | attr->set_unsigned (0); |
01c66ae6 | 20342 | } |
28e94949 | 20343 | |
c906108c SS |
20344 | return info_ptr; |
20345 | } | |
20346 | ||
a8329558 KW |
20347 | /* Read an attribute described by an abbreviated attribute. */ |
20348 | ||
d521ce57 | 20349 | static const gdb_byte * |
dee91e82 | 20350 | read_attribute (const struct die_reader_specs *reader, |
4444f407 | 20351 | struct attribute *attr, const struct attr_abbrev *abbrev, |
7a5f294d | 20352 | const gdb_byte *info_ptr) |
a8329558 KW |
20353 | { |
20354 | attr->name = abbrev->name; | |
c6481205 | 20355 | attr->string_is_canonical = 0; |
fe56917a | 20356 | attr->requires_reprocessing = 0; |
43988095 | 20357 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20358 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20359 | } |
20360 | ||
43988095 JK |
20361 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20362 | ||
20363 | static const char * | |
976ca316 | 20364 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20365 | LONGEST str_offset) |
43988095 | 20366 | { |
976ca316 SM |
20367 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20368 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20369 | } |
20370 | ||
43988095 JK |
20371 | /* Return pointer to string at .debug_str offset as read from BUF. |
20372 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20373 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20374 | ||
d521ce57 | 20375 | static const char * |
976ca316 | 20376 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20377 | const gdb_byte *buf, |
cf2c3c16 TT |
20378 | const struct comp_unit_head *cu_header, |
20379 | unsigned int *bytes_read_ptr) | |
20380 | { | |
8266302d | 20381 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20382 | |
976ca316 | 20383 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20384 | } |
20385 | ||
86c0bb4c | 20386 | /* See read.h. */ |
43988095 | 20387 | |
86c0bb4c TT |
20388 | const char * |
20389 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20390 | const struct comp_unit_head *cu_header, |
20391 | unsigned int *bytes_read_ptr) | |
43988095 | 20392 | { |
86c0bb4c | 20393 | bfd *abfd = objfile->obfd; |
8266302d | 20394 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20395 | |
5989a64e | 20396 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20397 | } |
20398 | ||
3019eac3 | 20399 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20400 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20401 | ADDR_SIZE is the size of addresses from the CU header. */ |
20402 | ||
20403 | static CORE_ADDR | |
976ca316 SM |
20404 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20405 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20406 | { |
976ca316 | 20407 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20408 | bfd *abfd = objfile->obfd; |
20409 | const gdb_byte *info_ptr; | |
18a8505e | 20410 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20411 | |
976ca316 SM |
20412 | per_objfile->per_bfd->addr.read (objfile); |
20413 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20414 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20415 | objfile_name (objfile)); |
18a8505e | 20416 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20417 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20418 | error (_("DW_FORM_addr_index pointing outside of " |
20419 | ".debug_addr section [in module %s]"), | |
4262abfb | 20420 | objfile_name (objfile)); |
976ca316 SM |
20421 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20422 | + addr_index * addr_size); | |
3019eac3 DE |
20423 | if (addr_size == 4) |
20424 | return bfd_get_32 (abfd, info_ptr); | |
20425 | else | |
20426 | return bfd_get_64 (abfd, info_ptr); | |
20427 | } | |
20428 | ||
20429 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20430 | ||
20431 | static CORE_ADDR | |
20432 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20433 | { | |
5e22e966 | 20434 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20435 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20436 | } |
20437 | ||
20438 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20439 | ||
20440 | static CORE_ADDR | |
d521ce57 | 20441 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20442 | unsigned int *bytes_read) |
20443 | { | |
5e22e966 | 20444 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20445 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20446 | ||
20447 | return read_addr_index (cu, addr_index); | |
20448 | } | |
20449 | ||
450a1bfc | 20450 | /* See read.h. */ |
3019eac3 DE |
20451 | |
20452 | CORE_ADDR | |
82ca3f51 | 20453 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20454 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20455 | unsigned int addr_index) |
3019eac3 | 20456 | { |
976ca316 | 20457 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20458 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20459 | int addr_size; |
20460 | ||
3019eac3 DE |
20461 | /* We need addr_base and addr_size. |
20462 | If we don't have PER_CU->cu, we have to get it. | |
20463 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20464 | which at this point doesn't seem justified: it's not clear how frequently | |
20465 | it would get used and it would increase the size of every PER_CU. | |
20466 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20467 | so we're not in uncharted territory here. | |
20468 | Alas we need to be a bit more complicated as addr_base is contained | |
20469 | in the DIE. | |
20470 | ||
20471 | We don't need to read the entire CU(/TU). | |
20472 | We just need the header and top level die. | |
a1b64ce1 | 20473 | |
3019eac3 | 20474 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20475 | For now we skip this optimization. */ |
3019eac3 DE |
20476 | |
20477 | if (cu != NULL) | |
20478 | { | |
20479 | addr_base = cu->addr_base; | |
20480 | addr_size = cu->header.addr_size; | |
20481 | } | |
20482 | else | |
20483 | { | |
976ca316 | 20484 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20485 | addr_base = reader.cu->addr_base; |
20486 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20487 | } |
20488 | ||
976ca316 | 20489 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20490 | } |
20491 | ||
18a8505e AT |
20492 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20493 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20494 | DWO file. */ | |
3019eac3 | 20495 | |
d521ce57 | 20496 | static const char * |
18a8505e AT |
20497 | read_str_index (struct dwarf2_cu *cu, |
20498 | struct dwarf2_section_info *str_section, | |
20499 | struct dwarf2_section_info *str_offsets_section, | |
20500 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20501 | { |
976ca316 SM |
20502 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20503 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20504 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20505 | bfd *abfd = objfile->obfd; |
d521ce57 | 20506 | const gdb_byte *info_ptr; |
3019eac3 | 20507 | ULONGEST str_offset; |
cf532bd1 | 20508 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20509 | |
96b79293 TT |
20510 | str_section->read (objfile); |
20511 | str_offsets_section->read (objfile); | |
73869dc2 | 20512 | if (str_section->buffer == NULL) |
18a8505e | 20513 | error (_("%s used without %s section" |
9d8780f0 | 20514 | " in CU at offset %s [in module %s]"), |
96b79293 | 20515 | form_name, str_section->get_name (), |
dda83cd7 | 20516 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20517 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20518 | error (_("%s used without %s section" |
9d8780f0 | 20519 | " in CU at offset %s [in module %s]"), |
96b79293 | 20520 | form_name, str_section->get_name (), |
dda83cd7 | 20521 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20522 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20523 | + str_offsets_base |
3019eac3 DE |
20524 | + str_index * cu->header.offset_size); |
20525 | if (cu->header.offset_size == 4) | |
20526 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20527 | else | |
20528 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20529 | if (str_offset >= str_section->size) |
57d63ce2 | 20530 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20531 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20532 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20533 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20534 | } |
20535 | ||
18a8505e AT |
20536 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20537 | ||
20538 | static const char * | |
20539 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20540 | { | |
20541 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20542 | ? reader->cu->header.addr_size : 0; | |
20543 | return read_str_index (reader->cu, | |
20544 | &reader->dwo_file->sections.str, | |
20545 | &reader->dwo_file->sections.str_offsets, | |
20546 | str_offsets_base, str_index); | |
20547 | } | |
20548 | ||
20549 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20550 | ||
20551 | static const char * | |
20552 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20553 | { | |
5e22e966 | 20554 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20555 | const char *objf_name = objfile_name (objfile); |
20556 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20557 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20558 | ||
20559 | if (!cu->str_offsets_base.has_value ()) | |
20560 | error (_("%s used in Fission stub without %s" | |
20561 | " in CU at offset 0x%lx [in module %s]"), | |
20562 | form_name, str_offsets_attr_name, | |
20563 | (long) cu->header.offset_size, objf_name); | |
20564 | ||
20565 | return read_str_index (cu, | |
5e22e966 SM |
20566 | &cu->per_objfile->per_bfd->str, |
20567 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20568 | *cu->str_offsets_base, str_index); |
20569 | } | |
20570 | ||
3019eac3 DE |
20571 | /* Return the length of an LEB128 number in BUF. */ |
20572 | ||
20573 | static int | |
20574 | leb128_size (const gdb_byte *buf) | |
20575 | { | |
20576 | const gdb_byte *begin = buf; | |
20577 | gdb_byte byte; | |
20578 | ||
20579 | while (1) | |
20580 | { | |
20581 | byte = *buf++; | |
20582 | if ((byte & 128) == 0) | |
20583 | return buf - begin; | |
20584 | } | |
20585 | } | |
20586 | ||
c906108c | 20587 | static void |
e142c38c | 20588 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20589 | { |
20590 | switch (lang) | |
20591 | { | |
20592 | case DW_LANG_C89: | |
76bee0cc | 20593 | case DW_LANG_C99: |
0cfd832f | 20594 | case DW_LANG_C11: |
c906108c | 20595 | case DW_LANG_C: |
d1be3247 | 20596 | case DW_LANG_UPC: |
e142c38c | 20597 | cu->language = language_c; |
c906108c | 20598 | break; |
9c37b5ae | 20599 | case DW_LANG_Java: |
c906108c | 20600 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20601 | case DW_LANG_C_plus_plus_11: |
20602 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20603 | cu->language = language_cplus; |
c906108c | 20604 | break; |
6aecb9c2 JB |
20605 | case DW_LANG_D: |
20606 | cu->language = language_d; | |
20607 | break; | |
c906108c SS |
20608 | case DW_LANG_Fortran77: |
20609 | case DW_LANG_Fortran90: | |
b21b22e0 | 20610 | case DW_LANG_Fortran95: |
f7de9aab MW |
20611 | case DW_LANG_Fortran03: |
20612 | case DW_LANG_Fortran08: | |
e142c38c | 20613 | cu->language = language_fortran; |
c906108c | 20614 | break; |
a766d390 DE |
20615 | case DW_LANG_Go: |
20616 | cu->language = language_go; | |
20617 | break; | |
c906108c | 20618 | case DW_LANG_Mips_Assembler: |
e142c38c | 20619 | cu->language = language_asm; |
c906108c SS |
20620 | break; |
20621 | case DW_LANG_Ada83: | |
8aaf0b47 | 20622 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20623 | cu->language = language_ada; |
20624 | break; | |
72019c9c GM |
20625 | case DW_LANG_Modula2: |
20626 | cu->language = language_m2; | |
20627 | break; | |
fe8e67fd PM |
20628 | case DW_LANG_Pascal83: |
20629 | cu->language = language_pascal; | |
20630 | break; | |
22566fbd DJ |
20631 | case DW_LANG_ObjC: |
20632 | cu->language = language_objc; | |
20633 | break; | |
c44af4eb TT |
20634 | case DW_LANG_Rust: |
20635 | case DW_LANG_Rust_old: | |
20636 | cu->language = language_rust; | |
20637 | break; | |
c906108c SS |
20638 | case DW_LANG_Cobol74: |
20639 | case DW_LANG_Cobol85: | |
c906108c | 20640 | default: |
e142c38c | 20641 | cu->language = language_minimal; |
c906108c SS |
20642 | break; |
20643 | } | |
e142c38c | 20644 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20645 | } |
20646 | ||
20647 | /* Return the named attribute or NULL if not there. */ | |
20648 | ||
20649 | static struct attribute * | |
e142c38c | 20650 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20651 | { |
a48e046c | 20652 | for (;;) |
c906108c | 20653 | { |
a48e046c TT |
20654 | unsigned int i; |
20655 | struct attribute *spec = NULL; | |
20656 | ||
20657 | for (i = 0; i < die->num_attrs; ++i) | |
20658 | { | |
20659 | if (die->attrs[i].name == name) | |
20660 | return &die->attrs[i]; | |
20661 | if (die->attrs[i].name == DW_AT_specification | |
20662 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20663 | spec = &die->attrs[i]; | |
20664 | } | |
20665 | ||
20666 | if (!spec) | |
20667 | break; | |
c906108c | 20668 | |
f2f0e013 | 20669 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20670 | } |
c5aa993b | 20671 | |
c906108c SS |
20672 | return NULL; |
20673 | } | |
20674 | ||
7d45c7c3 KB |
20675 | /* Return the string associated with a string-typed attribute, or NULL if it |
20676 | is either not found or is of an incorrect type. */ | |
20677 | ||
20678 | static const char * | |
20679 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20680 | { | |
20681 | struct attribute *attr; | |
20682 | const char *str = NULL; | |
20683 | ||
20684 | attr = dwarf2_attr (die, name, cu); | |
20685 | ||
20686 | if (attr != NULL) | |
20687 | { | |
95f982e5 | 20688 | str = attr->as_string (); |
e61108c9 | 20689 | if (str == nullptr) |
dda83cd7 | 20690 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20691 | "DIE at %s in module %s"), |
20692 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20693 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20694 | } |
20695 | ||
20696 | return str; | |
20697 | } | |
20698 | ||
a084a2a6 | 20699 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20700 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20701 | static const char * |
20702 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20703 | { | |
20704 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20705 | if (dwo_name == nullptr) | |
20706 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20707 | return dwo_name; | |
20708 | } | |
20709 | ||
05cf31d1 JB |
20710 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20711 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20712 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20713 | |
20714 | static int | |
20715 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20716 | { | |
20717 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20718 | ||
c45bc3f8 | 20719 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
20720 | } |
20721 | ||
3ca72b44 | 20722 | static int |
e142c38c | 20723 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20724 | { |
05cf31d1 JB |
20725 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20726 | which value is non-zero. However, we have to be careful with | |
20727 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20728 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20729 | end up accidently finding a declaration attribute that belongs | |
20730 | to a different DIE referenced by the specification attribute, | |
20731 | even though the given DIE does not have a declaration attribute. */ | |
20732 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20733 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20734 | } |
20735 | ||
63d06c5c | 20736 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20737 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20738 | containing the return value on output. If there is no |
20739 | specification, but there is an abstract origin, that is | |
20740 | returned. */ | |
63d06c5c DC |
20741 | |
20742 | static struct die_info * | |
f2f0e013 | 20743 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20744 | { |
f2f0e013 DJ |
20745 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20746 | *spec_cu); | |
63d06c5c | 20747 | |
edb3359d DJ |
20748 | if (spec_attr == NULL) |
20749 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20750 | ||
63d06c5c DC |
20751 | if (spec_attr == NULL) |
20752 | return NULL; | |
20753 | else | |
f2f0e013 | 20754 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20755 | } |
c906108c | 20756 | |
527f3840 JK |
20757 | /* Stub for free_line_header to match void * callback types. */ |
20758 | ||
20759 | static void | |
20760 | free_line_header_voidp (void *arg) | |
20761 | { | |
9a3c8263 | 20762 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20763 | |
fff8551c | 20764 | delete lh; |
527f3840 JK |
20765 | } |
20766 | ||
83769d0b | 20767 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20768 | |
20769 | static struct dwarf2_section_info * | |
20770 | get_debug_line_section (struct dwarf2_cu *cu) | |
20771 | { | |
20772 | struct dwarf2_section_info *section; | |
976ca316 | 20773 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20774 | |
20775 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20776 | DWO file. */ | |
20777 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20778 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20779 | else if (cu->per_cu->is_dwz) | |
20780 | { | |
a7308ce0 | 20781 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
36586728 TT |
20782 | |
20783 | section = &dwz->line; | |
20784 | } | |
20785 | else | |
976ca316 | 20786 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20787 | |
20788 | return section; | |
20789 | } | |
20790 | ||
debd256d | 20791 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20792 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20793 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20794 | Returns NULL if there is a problem reading the header, e.g., if it |
20795 | has a version we don't understand. | |
debd256d JB |
20796 | |
20797 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20798 | the returned object point into the dwarf line section buffer, |
20799 | and must not be freed. */ | |
ae2de4f8 | 20800 | |
fff8551c | 20801 | static line_header_up |
9c541725 | 20802 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20803 | { |
3019eac3 | 20804 | struct dwarf2_section_info *section; |
976ca316 | 20805 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20806 | |
36586728 | 20807 | section = get_debug_line_section (cu); |
976ca316 | 20808 | section->read (per_objfile->objfile); |
3019eac3 | 20809 | if (section->buffer == NULL) |
debd256d | 20810 | { |
3019eac3 | 20811 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20812 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20813 | else |
b98664d3 | 20814 | complaint (_("missing .debug_line section")); |
debd256d JB |
20815 | return 0; |
20816 | } | |
20817 | ||
0df7ad3a | 20818 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20819 | per_objfile, section, &cu->header); |
debd256d | 20820 | } |
c906108c | 20821 | |
c6da4cef | 20822 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20823 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20824 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20825 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20826 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20827 | |
d521ce57 | 20828 | static const char * |
7ba99d21 | 20829 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20830 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20831 | const char *comp_dir, |
20832 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20833 | { |
d521ce57 TT |
20834 | const char *include_name = fe.name; |
20835 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20836 | const char *pst_filename; |
c6da4cef DE |
20837 | int file_is_pst; |
20838 | ||
8c43009f | 20839 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20840 | |
c89b44cd | 20841 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20842 | if (!IS_ABSOLUTE_PATH (include_name) |
20843 | && (dir_name != NULL || comp_dir != NULL)) | |
20844 | { | |
20845 | /* Avoid creating a duplicate psymtab for PST. | |
20846 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20847 | Before we do the comparison, however, we need to account | |
20848 | for DIR_NAME and COMP_DIR. | |
20849 | First prepend dir_name (if non-NULL). If we still don't | |
20850 | have an absolute path prepend comp_dir (if non-NULL). | |
20851 | However, the directory we record in the include-file's | |
20852 | psymtab does not contain COMP_DIR (to match the | |
20853 | corresponding symtab(s)). | |
20854 | ||
20855 | Example: | |
20856 | ||
20857 | bash$ cd /tmp | |
20858 | bash$ gcc -g ./hello.c | |
20859 | include_name = "hello.c" | |
20860 | dir_name = "." | |
20861 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20862 | DW_AT_name = "./hello.c" |
20863 | ||
20864 | */ | |
c6da4cef DE |
20865 | |
20866 | if (dir_name != NULL) | |
20867 | { | |
c89b44cd TT |
20868 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20869 | include_name, (char *) NULL)); | |
20870 | include_name = name_holder->get (); | |
c6da4cef | 20871 | include_name_to_compare = include_name; |
c6da4cef DE |
20872 | } |
20873 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20874 | { | |
c89b44cd TT |
20875 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20876 | include_name, (char *) NULL)); | |
20877 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20878 | } |
20879 | } | |
20880 | ||
20881 | pst_filename = pst->filename; | |
c89b44cd | 20882 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20883 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20884 | { | |
c89b44cd TT |
20885 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20886 | pst_filename, (char *) NULL)); | |
20887 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20888 | } |
20889 | ||
1e3fad37 | 20890 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20891 | |
c6da4cef DE |
20892 | if (file_is_pst) |
20893 | return NULL; | |
20894 | return include_name; | |
20895 | } | |
20896 | ||
d9b3de22 DE |
20897 | /* State machine to track the state of the line number program. */ |
20898 | ||
6f77053d | 20899 | class lnp_state_machine |
d9b3de22 | 20900 | { |
6f77053d PA |
20901 | public: |
20902 | /* Initialize a machine state for the start of a line number | |
20903 | program. */ | |
804d2729 TT |
20904 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20905 | bool record_lines_p); | |
6f77053d | 20906 | |
8c43009f PA |
20907 | file_entry *current_file () |
20908 | { | |
20909 | /* lh->file_names is 0-based, but the file name numbers in the | |
20910 | statement program are 1-based. */ | |
6f77053d PA |
20911 | return m_line_header->file_name_at (m_file); |
20912 | } | |
20913 | ||
20914 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20915 | we're processing the end of a sequence. */ | |
20916 | void record_line (bool end_sequence); | |
20917 | ||
a8caed5d | 20918 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 20919 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
20920 | void check_line_address (struct dwarf2_cu *cu, |
20921 | const gdb_byte *line_ptr, | |
7ab6656f | 20922 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20923 | |
20924 | void handle_set_discriminator (unsigned int discriminator) | |
20925 | { | |
20926 | m_discriminator = discriminator; | |
20927 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20928 | } | |
20929 | ||
20930 | /* Handle DW_LNE_set_address. */ | |
20931 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20932 | { | |
20933 | m_op_index = 0; | |
20934 | address += baseaddr; | |
20935 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20936 | } | |
20937 | ||
20938 | /* Handle DW_LNS_advance_pc. */ | |
20939 | void handle_advance_pc (CORE_ADDR adjust); | |
20940 | ||
20941 | /* Handle a special opcode. */ | |
20942 | void handle_special_opcode (unsigned char op_code); | |
20943 | ||
20944 | /* Handle DW_LNS_advance_line. */ | |
20945 | void handle_advance_line (int line_delta) | |
20946 | { | |
20947 | advance_line (line_delta); | |
20948 | } | |
20949 | ||
20950 | /* Handle DW_LNS_set_file. */ | |
20951 | void handle_set_file (file_name_index file); | |
20952 | ||
20953 | /* Handle DW_LNS_negate_stmt. */ | |
20954 | void handle_negate_stmt () | |
20955 | { | |
20956 | m_is_stmt = !m_is_stmt; | |
20957 | } | |
20958 | ||
20959 | /* Handle DW_LNS_const_add_pc. */ | |
20960 | void handle_const_add_pc (); | |
20961 | ||
20962 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20963 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20964 | { | |
20965 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20966 | m_op_index = 0; | |
20967 | } | |
20968 | ||
20969 | /* Handle DW_LNS_copy. */ | |
20970 | void handle_copy () | |
20971 | { | |
20972 | record_line (false); | |
20973 | m_discriminator = 0; | |
20974 | } | |
20975 | ||
20976 | /* Handle DW_LNE_end_sequence. */ | |
20977 | void handle_end_sequence () | |
20978 | { | |
804d2729 | 20979 | m_currently_recording_lines = true; |
6f77053d PA |
20980 | } |
20981 | ||
20982 | private: | |
20983 | /* Advance the line by LINE_DELTA. */ | |
20984 | void advance_line (int line_delta) | |
20985 | { | |
20986 | m_line += line_delta; | |
20987 | ||
20988 | if (line_delta != 0) | |
20989 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20990 | } |
20991 | ||
804d2729 TT |
20992 | struct dwarf2_cu *m_cu; |
20993 | ||
6f77053d PA |
20994 | gdbarch *m_gdbarch; |
20995 | ||
20996 | /* True if we're recording lines. | |
20997 | Otherwise we're building partial symtabs and are just interested in | |
20998 | finding include files mentioned by the line number program. */ | |
20999 | bool m_record_lines_p; | |
21000 | ||
8c43009f | 21001 | /* The line number header. */ |
6f77053d | 21002 | line_header *m_line_header; |
8c43009f | 21003 | |
6f77053d PA |
21004 | /* These are part of the standard DWARF line number state machine, |
21005 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21006 | |
6f77053d | 21007 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21008 | /* The line table index of the current file. */ |
21009 | file_name_index m_file = 1; | |
6f77053d PA |
21010 | unsigned int m_line = 1; |
21011 | ||
21012 | /* These are initialized in the constructor. */ | |
21013 | ||
21014 | CORE_ADDR m_address; | |
21015 | bool m_is_stmt; | |
21016 | unsigned int m_discriminator; | |
d9b3de22 DE |
21017 | |
21018 | /* Additional bits of state we need to track. */ | |
21019 | ||
21020 | /* The last file that we called dwarf2_start_subfile for. | |
21021 | This is only used for TLLs. */ | |
6f77053d | 21022 | unsigned int m_last_file = 0; |
d9b3de22 | 21023 | /* The last file a line number was recorded for. */ |
6f77053d | 21024 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21025 | |
1313c56e AB |
21026 | /* The address of the last line entry. */ |
21027 | CORE_ADDR m_last_address; | |
21028 | ||
21029 | /* Set to true when a previous line at the same address (using | |
21030 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21031 | line entry at a new address (m_address different to m_last_address) is | |
21032 | processed. */ | |
21033 | bool m_stmt_at_address = false; | |
21034 | ||
804d2729 TT |
21035 | /* When true, record the lines we decode. */ |
21036 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21037 | |
21038 | /* The last line number that was recorded, used to coalesce | |
21039 | consecutive entries for the same line. This can happen, for | |
21040 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21041 | unsigned int m_last_line = 0; |
21042 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21043 | }; |
d9b3de22 | 21044 | |
6f77053d PA |
21045 | void |
21046 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21047 | { | |
21048 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21049 | / m_line_header->maximum_ops_per_instruction) | |
21050 | * m_line_header->minimum_instruction_length); | |
21051 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21052 | m_op_index = ((m_op_index + adjust) | |
21053 | % m_line_header->maximum_ops_per_instruction); | |
21054 | } | |
d9b3de22 | 21055 | |
6f77053d PA |
21056 | void |
21057 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21058 | { |
6f77053d | 21059 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21060 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21061 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21062 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21063 | / m_line_header->maximum_ops_per_instruction) |
21064 | * m_line_header->minimum_instruction_length); | |
21065 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21066 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21067 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21068 | |
258bf0ee | 21069 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21070 | advance_line (line_delta); |
21071 | record_line (false); | |
21072 | m_discriminator = 0; | |
21073 | } | |
d9b3de22 | 21074 | |
6f77053d PA |
21075 | void |
21076 | lnp_state_machine::handle_set_file (file_name_index file) | |
21077 | { | |
21078 | m_file = file; | |
21079 | ||
21080 | const file_entry *fe = current_file (); | |
21081 | if (fe == NULL) | |
21082 | dwarf2_debug_line_missing_file_complaint (); | |
21083 | else if (m_record_lines_p) | |
21084 | { | |
21085 | const char *dir = fe->include_dir (m_line_header); | |
21086 | ||
c24bdb02 | 21087 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21088 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21089 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21090 | } |
21091 | } | |
21092 | ||
21093 | void | |
21094 | lnp_state_machine::handle_const_add_pc () | |
21095 | { | |
21096 | CORE_ADDR adjust | |
21097 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21098 | ||
21099 | CORE_ADDR addr_adj | |
21100 | = (((m_op_index + adjust) | |
21101 | / m_line_header->maximum_ops_per_instruction) | |
21102 | * m_line_header->minimum_instruction_length); | |
21103 | ||
21104 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21105 | m_op_index = ((m_op_index + adjust) | |
21106 | % m_line_header->maximum_ops_per_instruction); | |
21107 | } | |
d9b3de22 | 21108 | |
a05a36a5 DE |
21109 | /* Return non-zero if we should add LINE to the line number table. |
21110 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21111 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21112 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21113 | had a non-zero discriminator. | |
21114 | ||
21115 | We have to be careful in the presence of discriminators. | |
21116 | E.g., for this line: | |
21117 | ||
21118 | for (i = 0; i < 100000; i++); | |
21119 | ||
21120 | clang can emit four line number entries for that one line, | |
21121 | each with a different discriminator. | |
21122 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21123 | ||
21124 | However, we want gdb to coalesce all four entries into one. | |
21125 | Otherwise the user could stepi into the middle of the line and | |
21126 | gdb would get confused about whether the pc really was in the | |
21127 | middle of the line. | |
21128 | ||
21129 | Things are further complicated by the fact that two consecutive | |
21130 | line number entries for the same line is a heuristic used by gcc | |
21131 | to denote the end of the prologue. So we can't just discard duplicate | |
21132 | entries, we have to be selective about it. The heuristic we use is | |
21133 | that we only collapse consecutive entries for the same line if at least | |
21134 | one of those entries has a non-zero discriminator. PR 17276. | |
21135 | ||
21136 | Note: Addresses in the line number state machine can never go backwards | |
21137 | within one sequence, thus this coalescing is ok. */ | |
21138 | ||
21139 | static int | |
804d2729 TT |
21140 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21141 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21142 | int line_has_non_zero_discriminator, |
21143 | struct subfile *last_subfile) | |
21144 | { | |
c24bdb02 | 21145 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21146 | return 1; |
21147 | if (line != last_line) | |
21148 | return 1; | |
21149 | /* Same line for the same file that we've seen already. | |
21150 | As a last check, for pr 17276, only record the line if the line | |
21151 | has never had a non-zero discriminator. */ | |
21152 | if (!line_has_non_zero_discriminator) | |
21153 | return 1; | |
21154 | return 0; | |
21155 | } | |
21156 | ||
804d2729 TT |
21157 | /* Use the CU's builder to record line number LINE beginning at |
21158 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21159 | |
21160 | static void | |
d9b3de22 | 21161 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21162 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21163 | struct dwarf2_cu *cu) |
252a6764 DE |
21164 | { |
21165 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21166 | ||
27e0867f DE |
21167 | if (dwarf_line_debug) |
21168 | { | |
21169 | fprintf_unfiltered (gdb_stdlog, | |
21170 | "Recording line %u, file %s, address %s\n", | |
21171 | line, lbasename (subfile->name), | |
21172 | paddress (gdbarch, address)); | |
21173 | } | |
21174 | ||
804d2729 | 21175 | if (cu != nullptr) |
8c95582d | 21176 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21177 | } |
21178 | ||
21179 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21180 | Mark the end of a set of line number records. | |
d9b3de22 | 21181 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21182 | If SUBFILE is NULL the request is ignored. */ |
21183 | ||
21184 | static void | |
21185 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21186 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21187 | { |
27e0867f DE |
21188 | if (subfile == NULL) |
21189 | return; | |
21190 | ||
21191 | if (dwarf_line_debug) | |
21192 | { | |
21193 | fprintf_unfiltered (gdb_stdlog, | |
21194 | "Finishing current line, file %s, address %s\n", | |
21195 | lbasename (subfile->name), | |
21196 | paddress (gdbarch, address)); | |
21197 | } | |
21198 | ||
8c95582d | 21199 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21200 | } |
21201 | ||
6f77053d PA |
21202 | void |
21203 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21204 | { |
d9b3de22 DE |
21205 | if (dwarf_line_debug) |
21206 | { | |
21207 | fprintf_unfiltered (gdb_stdlog, | |
21208 | "Processing actual line %u: file %u," | |
94a72be7 | 21209 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21210 | m_line, m_file, |
6f77053d | 21211 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21212 | m_is_stmt, m_discriminator, |
21213 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21214 | } |
21215 | ||
6f77053d | 21216 | file_entry *fe = current_file (); |
8c43009f PA |
21217 | |
21218 | if (fe == NULL) | |
d9b3de22 DE |
21219 | dwarf2_debug_line_missing_file_complaint (); |
21220 | /* For now we ignore lines not starting on an instruction boundary. | |
21221 | But not when processing end_sequence for compatibility with the | |
21222 | previous version of the code. */ | |
6f77053d | 21223 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21224 | { |
8c43009f | 21225 | fe->included_p = 1; |
8c95582d | 21226 | if (m_record_lines_p) |
d9b3de22 | 21227 | { |
1313c56e AB |
21228 | /* When we switch files we insert an end maker in the first file, |
21229 | switch to the second file and add a new line entry. The | |
21230 | problem is that the end marker inserted in the first file will | |
21231 | discard any previous line entries at the same address. If the | |
21232 | line entries in the first file are marked as is-stmt, while | |
21233 | the new line in the second file is non-stmt, then this means | |
21234 | the end marker will discard is-stmt lines so we can have a | |
21235 | non-stmt line. This means that there are less addresses at | |
21236 | which the user can insert a breakpoint. | |
21237 | ||
21238 | To improve this we track the last address in m_last_address, | |
21239 | and whether we have seen an is-stmt at this address. Then | |
21240 | when switching files, if we have seen a stmt at the current | |
21241 | address, and we are switching to create a non-stmt line, then | |
21242 | discard the new line. */ | |
21243 | bool file_changed | |
21244 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21245 | bool ignore_this_line | |
dda83cd7 SM |
21246 | = ((file_changed && !end_sequence && m_last_address == m_address |
21247 | && !m_is_stmt && m_stmt_at_address) | |
21248 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21249 | |
21250 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21251 | { |
804d2729 TT |
21252 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21253 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21254 | } |
21255 | ||
1313c56e | 21256 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21257 | { |
8c95582d AB |
21258 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21259 | ||
804d2729 | 21260 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21261 | m_line_has_non_zero_discriminator, |
21262 | m_last_subfile)) | |
d9b3de22 | 21263 | { |
c24bdb02 | 21264 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21265 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21266 | builder->get_current_subfile (), |
8c95582d | 21267 | m_line, m_address, is_stmt, |
804d2729 | 21268 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21269 | } |
c24bdb02 | 21270 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21271 | m_last_line = m_line; |
d9b3de22 DE |
21272 | } |
21273 | } | |
21274 | } | |
1313c56e AB |
21275 | |
21276 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21277 | have multiple line table entries all at m_address. */ | |
21278 | if (m_last_address != m_address) | |
21279 | { | |
21280 | m_stmt_at_address = false; | |
21281 | m_last_address = m_address; | |
21282 | } | |
21283 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21284 | } |
21285 | ||
804d2729 TT |
21286 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21287 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21288 | { |
804d2729 | 21289 | m_cu = cu; |
6f77053d PA |
21290 | m_gdbarch = arch; |
21291 | m_record_lines_p = record_lines_p; | |
21292 | m_line_header = lh; | |
d9b3de22 | 21293 | |
804d2729 | 21294 | m_currently_recording_lines = true; |
d9b3de22 | 21295 | |
d9b3de22 DE |
21296 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21297 | was a line entry for it so that the backend has a chance to adjust it | |
21298 | and also record it in case it needs it. This is currently used by MIPS | |
21299 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21300 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21301 | m_is_stmt = lh->default_is_stmt; | |
21302 | m_discriminator = 0; | |
1313c56e AB |
21303 | |
21304 | m_last_address = m_address; | |
21305 | m_stmt_at_address = false; | |
252a6764 DE |
21306 | } |
21307 | ||
6f77053d PA |
21308 | void |
21309 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21310 | const gdb_byte *line_ptr, | |
7ab6656f | 21311 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21312 | { |
a8caed5d FS |
21313 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21314 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21315 | located at 0x0. In this case, additionally check that if | |
21316 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21317 | |
a8caed5d FS |
21318 | if ((address == 0 && address < unrelocated_lowpc) |
21319 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21320 | { |
21321 | /* This line table is for a function which has been | |
21322 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21323 | ||
5e22e966 | 21324 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21325 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21326 | ||
b98664d3 | 21327 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21328 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21329 | m_currently_recording_lines = false; |
21330 | /* Note: m_currently_recording_lines is left as false until we see | |
21331 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21332 | } |
21333 | } | |
21334 | ||
f3f5162e | 21335 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21336 | Process the line number information in LH. |
21337 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21338 | program in order to set included_p for every referenced header. */ | |
debd256d | 21339 | |
c906108c | 21340 | static void |
43f3e411 DE |
21341 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21342 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21343 | { |
d521ce57 TT |
21344 | const gdb_byte *line_ptr, *extended_end; |
21345 | const gdb_byte *line_end; | |
a8c50c1f | 21346 | unsigned int bytes_read, extended_len; |
699ca60a | 21347 | unsigned char op_code, extended_op; |
e142c38c | 21348 | CORE_ADDR baseaddr; |
5e22e966 | 21349 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21350 | bfd *abfd = objfile->obfd; |
08feed99 | 21351 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21352 | /* True if we're recording line info (as opposed to building partial |
21353 | symtabs and just interested in finding include files mentioned by | |
21354 | the line number program). */ | |
21355 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21356 | |
b3b3bada | 21357 | baseaddr = objfile->text_section_offset (); |
c906108c | 21358 | |
debd256d JB |
21359 | line_ptr = lh->statement_program_start; |
21360 | line_end = lh->statement_program_end; | |
c906108c SS |
21361 | |
21362 | /* Read the statement sequences until there's nothing left. */ | |
21363 | while (line_ptr < line_end) | |
21364 | { | |
6f77053d PA |
21365 | /* The DWARF line number program state machine. Reset the state |
21366 | machine at the start of each sequence. */ | |
804d2729 | 21367 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21368 | bool end_sequence = false; |
d9b3de22 | 21369 | |
8c43009f | 21370 | if (record_lines_p) |
c906108c | 21371 | { |
8c43009f PA |
21372 | /* Start a subfile for the current file of the state |
21373 | machine. */ | |
21374 | const file_entry *fe = state_machine.current_file (); | |
21375 | ||
21376 | if (fe != NULL) | |
804d2729 | 21377 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21378 | } |
21379 | ||
a738430d | 21380 | /* Decode the table. */ |
d9b3de22 | 21381 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21382 | { |
21383 | op_code = read_1_byte (abfd, line_ptr); | |
21384 | line_ptr += 1; | |
9aa1fe7e | 21385 | |
debd256d | 21386 | if (op_code >= lh->opcode_base) |
6e70227d | 21387 | { |
8e07a239 | 21388 | /* Special opcode. */ |
6f77053d | 21389 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21390 | } |
21391 | else switch (op_code) | |
c906108c SS |
21392 | { |
21393 | case DW_LNS_extended_op: | |
3e43a32a MS |
21394 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21395 | &bytes_read); | |
473b7be6 | 21396 | line_ptr += bytes_read; |
a8c50c1f | 21397 | extended_end = line_ptr + extended_len; |
c906108c SS |
21398 | extended_op = read_1_byte (abfd, line_ptr); |
21399 | line_ptr += 1; | |
8f34b746 TV |
21400 | if (DW_LNE_lo_user <= extended_op |
21401 | && extended_op <= DW_LNE_hi_user) | |
21402 | { | |
21403 | /* Vendor extension, ignore. */ | |
21404 | line_ptr = extended_end; | |
21405 | break; | |
21406 | } | |
c906108c SS |
21407 | switch (extended_op) |
21408 | { | |
21409 | case DW_LNE_end_sequence: | |
6f77053d PA |
21410 | state_machine.handle_end_sequence (); |
21411 | end_sequence = true; | |
c906108c SS |
21412 | break; |
21413 | case DW_LNE_set_address: | |
d9b3de22 DE |
21414 | { |
21415 | CORE_ADDR address | |
c8a7a66f | 21416 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21417 | line_ptr += bytes_read; |
6f77053d PA |
21418 | |
21419 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21420 | lowpc - baseaddr, address); |
6f77053d | 21421 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21422 | } |
c906108c SS |
21423 | break; |
21424 | case DW_LNE_define_file: | |
dda83cd7 SM |
21425 | { |
21426 | const char *cur_file; | |
ecfb656c PA |
21427 | unsigned int mod_time, length; |
21428 | dir_index dindex; | |
6e70227d | 21429 | |
dda83cd7 | 21430 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21431 | &bytes_read); |
dda83cd7 SM |
21432 | line_ptr += bytes_read; |
21433 | dindex = (dir_index) | |
21434 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21435 | line_ptr += bytes_read; | |
21436 | mod_time = | |
21437 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21438 | line_ptr += bytes_read; | |
21439 | length = | |
21440 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21441 | line_ptr += bytes_read; | |
21442 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21443 | } | |
c906108c | 21444 | break; |
d0c6ba3d | 21445 | case DW_LNE_set_discriminator: |
6f77053d PA |
21446 | { |
21447 | /* The discriminator is not interesting to the | |
21448 | debugger; just ignore it. We still need to | |
21449 | check its value though: | |
21450 | if there are consecutive entries for the same | |
21451 | (non-prologue) line we want to coalesce them. | |
21452 | PR 17276. */ | |
21453 | unsigned int discr | |
21454 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21455 | line_ptr += bytes_read; | |
21456 | ||
21457 | state_machine.handle_set_discriminator (discr); | |
21458 | } | |
d0c6ba3d | 21459 | break; |
c906108c | 21460 | default: |
b98664d3 | 21461 | complaint (_("mangled .debug_line section")); |
debd256d | 21462 | return; |
c906108c | 21463 | } |
a8c50c1f DJ |
21464 | /* Make sure that we parsed the extended op correctly. If e.g. |
21465 | we expected a different address size than the producer used, | |
21466 | we may have read the wrong number of bytes. */ | |
21467 | if (line_ptr != extended_end) | |
21468 | { | |
b98664d3 | 21469 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21470 | return; |
21471 | } | |
c906108c SS |
21472 | break; |
21473 | case DW_LNS_copy: | |
6f77053d | 21474 | state_machine.handle_copy (); |
c906108c SS |
21475 | break; |
21476 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21477 | { |
21478 | CORE_ADDR adjust | |
21479 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21480 | line_ptr += bytes_read; |
6f77053d PA |
21481 | |
21482 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21483 | } |
c906108c SS |
21484 | break; |
21485 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21486 | { |
21487 | int line_delta | |
21488 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21489 | line_ptr += bytes_read; |
6f77053d PA |
21490 | |
21491 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21492 | } |
c906108c SS |
21493 | break; |
21494 | case DW_LNS_set_file: | |
d9b3de22 | 21495 | { |
6f77053d | 21496 | file_name_index file |
ecfb656c PA |
21497 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21498 | &bytes_read); | |
d9b3de22 | 21499 | line_ptr += bytes_read; |
8c43009f | 21500 | |
6f77053d | 21501 | state_machine.handle_set_file (file); |
d9b3de22 | 21502 | } |
c906108c SS |
21503 | break; |
21504 | case DW_LNS_set_column: | |
0ad93d4f | 21505 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21506 | line_ptr += bytes_read; |
21507 | break; | |
21508 | case DW_LNS_negate_stmt: | |
6f77053d | 21509 | state_machine.handle_negate_stmt (); |
c906108c SS |
21510 | break; |
21511 | case DW_LNS_set_basic_block: | |
c906108c | 21512 | break; |
c2c6d25f JM |
21513 | /* Add to the address register of the state machine the |
21514 | address increment value corresponding to special opcode | |
a738430d MK |
21515 | 255. I.e., this value is scaled by the minimum |
21516 | instruction length since special opcode 255 would have | |
b021a221 | 21517 | scaled the increment. */ |
c906108c | 21518 | case DW_LNS_const_add_pc: |
6f77053d | 21519 | state_machine.handle_const_add_pc (); |
c906108c SS |
21520 | break; |
21521 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21522 | { |
6f77053d | 21523 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21524 | line_ptr += 2; |
6f77053d PA |
21525 | |
21526 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21527 | } |
c906108c | 21528 | break; |
9aa1fe7e | 21529 | default: |
a738430d MK |
21530 | { |
21531 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21532 | int i; |
a738430d | 21533 | |
debd256d | 21534 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21535 | { |
21536 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21537 | line_ptr += bytes_read; | |
21538 | } | |
21539 | } | |
c906108c SS |
21540 | } |
21541 | } | |
d9b3de22 DE |
21542 | |
21543 | if (!end_sequence) | |
21544 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21545 | ||
21546 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21547 | in which case we still finish recording the last line). */ | |
6f77053d | 21548 | state_machine.record_line (true); |
c906108c | 21549 | } |
f3f5162e DE |
21550 | } |
21551 | ||
21552 | /* Decode the Line Number Program (LNP) for the given line_header | |
21553 | structure and CU. The actual information extracted and the type | |
21554 | of structures created from the LNP depends on the value of PST. | |
21555 | ||
21556 | 1. If PST is NULL, then this procedure uses the data from the program | |
21557 | to create all necessary symbol tables, and their linetables. | |
21558 | ||
21559 | 2. If PST is not NULL, this procedure reads the program to determine | |
21560 | the list of files included by the unit represented by PST, and | |
21561 | builds all the associated partial symbol tables. | |
21562 | ||
21563 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21564 | It is used for relative paths in the line table. | |
21565 | NOTE: When processing partial symtabs (pst != NULL), | |
21566 | comp_dir == pst->dirname. | |
21567 | ||
21568 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21569 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21570 | symtab we don't use it in the name of the psymtabs we create. | |
21571 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21572 | A good testcase for this is mb-inline.exp. |
21573 | ||
527f3840 JK |
21574 | LOWPC is the lowest address in CU (or 0 if not known). |
21575 | ||
21576 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21577 | for its PC<->lines mapping information. Otherwise only the filename | |
21578 | table is read in. */ | |
f3f5162e DE |
21579 | |
21580 | static void | |
21581 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21582 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21583 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21584 | { |
5e22e966 | 21585 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21586 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21587 | |
527f3840 JK |
21588 | if (decode_mapping) |
21589 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21590 | |
21591 | if (decode_for_pst_p) | |
21592 | { | |
aaa75496 | 21593 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21594 | create the psymtab of each included file. */ |
7ba99d21 | 21595 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21596 | if (file_entry.included_p == 1) |
21597 | { | |
c89b44cd | 21598 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21599 | const char *include_name = |
7ba99d21 AT |
21600 | psymtab_include_file_name (lh, file_entry, pst, |
21601 | comp_dir, &name_holder); | |
c6da4cef | 21602 | if (include_name != NULL) |
7b249e47 TT |
21603 | dwarf2_create_include_psymtab |
21604 | (cu->per_objfile->per_bfd, include_name, pst, | |
21605 | cu->per_objfile->per_bfd->partial_symtabs.get (), | |
0072c873 | 21606 | objfile->per_bfd); |
dda83cd7 | 21607 | } |
aaa75496 | 21608 | } |
cb1df416 DJ |
21609 | else |
21610 | { | |
21611 | /* Make sure a symtab is created for every file, even files | |
21612 | which contain only variables (i.e. no code with associated | |
21613 | line numbers). */ | |
c24bdb02 KS |
21614 | buildsym_compunit *builder = cu->get_builder (); |
21615 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21616 | |
7ba99d21 | 21617 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21618 | { |
804d2729 | 21619 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21620 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21621 | { |
c24bdb02 | 21622 | builder->get_current_subfile ()->symtab |
804d2729 | 21623 | = allocate_symtab (cust, |
c24bdb02 | 21624 | builder->get_current_subfile ()->name); |
43f3e411 | 21625 | } |
c24bdb02 | 21626 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21627 | } |
21628 | } | |
c906108c SS |
21629 | } |
21630 | ||
21631 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21632 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21633 | or NULL if not known. |
c906108c SS |
21634 | This routine tries to keep line numbers from identical absolute and |
21635 | relative file names in a common subfile. | |
21636 | ||
21637 | Using the `list' example from the GDB testsuite, which resides in | |
21638 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21639 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21640 | ||
c5aa993b | 21641 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21642 | DW_AT_comp_dir: /compdir |
357e46e7 | 21643 | files.files[0].name: list0.h |
c5aa993b | 21644 | files.files[0].dir: /srcdir |
357e46e7 | 21645 | files.files[1].name: list0.c |
c5aa993b | 21646 | files.files[1].dir: /srcdir |
c906108c SS |
21647 | |
21648 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21649 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21650 | start_subfile will ensure that this happens provided that we pass the | |
21651 | concatenation of files.files[1].dir and files.files[1].name as the | |
21652 | subfile's name. */ | |
c906108c SS |
21653 | |
21654 | static void | |
804d2729 TT |
21655 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21656 | const char *dirname) | |
c906108c | 21657 | { |
43816ebc | 21658 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21659 | |
4d663531 | 21660 | /* In order not to lose the line information directory, |
4f1520fb FR |
21661 | we concatenate it to the filename when it makes sense. |
21662 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21663 | information): ``The directory index is ignored for file names | |
21664 | that represent full path names''. Thus ignoring dirname in the | |
21665 | `else' branch below isn't an issue. */ | |
c906108c | 21666 | |
d5166ae1 | 21667 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21668 | { |
43816ebc TT |
21669 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21670 | filename = copy.get (); | |
d521ce57 | 21671 | } |
c906108c | 21672 | |
c24bdb02 | 21673 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21674 | } |
21675 | ||
804d2729 TT |
21676 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21677 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21678 | |
c24bdb02 KS |
21679 | struct compunit_symtab * |
21680 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21681 | CORE_ADDR low_pc) | |
f4dc4d17 | 21682 | { |
c24bdb02 | 21683 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21684 | |
c24bdb02 | 21685 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21686 | (this->per_objfile->objfile, |
c24bdb02 | 21687 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21688 | |
c24bdb02 | 21689 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21690 | |
c24bdb02 KS |
21691 | get_builder ()->record_debugformat ("DWARF 2"); |
21692 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21693 | |
c24bdb02 | 21694 | processing_has_namespace_info = false; |
43f3e411 | 21695 | |
c24bdb02 | 21696 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21697 | } |
21698 | ||
4c2df51b DJ |
21699 | static void |
21700 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21701 | struct dwarf2_cu *cu) |
4c2df51b | 21702 | { |
5e22e966 | 21703 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21704 | struct comp_unit_head *cu_header = &cu->header; |
21705 | ||
4c2df51b DJ |
21706 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21707 | code here to turn a symbol with DW_AT_external and a | |
21708 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21709 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21710 | with some versions of binutils) where shared libraries could have | |
21711 | relocations against symbols in their debug information - the | |
21712 | minimal symbol would have the right address, but the debug info | |
21713 | would not. It's no longer necessary, because we will explicitly | |
21714 | apply relocations when we read in the debug information now. */ | |
21715 | ||
21716 | /* A DW_AT_location attribute with no contents indicates that a | |
21717 | variable has been optimized away. */ | |
9d2246fc | 21718 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21719 | { |
f1e6e072 | 21720 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21721 | return; |
21722 | } | |
21723 | ||
21724 | /* Handle one degenerate form of location expression specially, to | |
21725 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21726 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21727 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21728 | |
9d2246fc TT |
21729 | if (attr->form_is_block ()) |
21730 | { | |
21731 | struct dwarf_block *block = attr->as_block (); | |
21732 | ||
21733 | if ((block->data[0] == DW_OP_addr | |
21734 | && block->size == 1 + cu_header->addr_size) | |
21735 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 21736 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
21737 | && (block->size |
21738 | == 1 + leb128_size (&block->data[1])))) | |
21739 | { | |
21740 | unsigned int dummy; | |
21741 | ||
21742 | if (block->data[0] == DW_OP_addr) | |
21743 | SET_SYMBOL_VALUE_ADDRESS | |
21744 | (sym, cu->header.read_address (objfile->obfd, | |
21745 | block->data + 1, | |
38583298 | 21746 | &dummy)); |
9d2246fc TT |
21747 | else |
21748 | SET_SYMBOL_VALUE_ADDRESS | |
21749 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21750 | &dummy)); | |
21751 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21752 | fixup_symbol_section (sym, objfile); | |
21753 | SET_SYMBOL_VALUE_ADDRESS | |
21754 | (sym, | |
21755 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 21756 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
21757 | return; |
21758 | } | |
4c2df51b DJ |
21759 | } |
21760 | ||
21761 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21762 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21763 | (i.e. when the value of a register or memory location is | |
21764 | referenced, or a thread-local block, etc.). Then again, it might | |
21765 | not be worthwhile. I'm assuming that it isn't unless performance | |
21766 | or memory numbers show me otherwise. */ | |
21767 | ||
f1e6e072 | 21768 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21769 | |
f1e6e072 | 21770 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21771 | cu->has_loclist = true; |
4c2df51b DJ |
21772 | } |
21773 | ||
c906108c SS |
21774 | /* Given a pointer to a DWARF information entry, figure out if we need |
21775 | to make a symbol table entry for it, and if so, create a new entry | |
21776 | and return a pointer to it. | |
21777 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21778 | used the passed type. |
21779 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21780 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21781 | |
21782 | static struct symbol * | |
5e2db402 TT |
21783 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21784 | struct symbol *space) | |
c906108c | 21785 | { |
976ca316 SM |
21786 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21787 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21788 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21789 | struct symbol *sym = NULL; |
15d034d0 | 21790 | const char *name; |
c906108c SS |
21791 | struct attribute *attr = NULL; |
21792 | struct attribute *attr2 = NULL; | |
e142c38c | 21793 | CORE_ADDR baseaddr; |
e37fd15a SW |
21794 | struct pending **list_to_add = NULL; |
21795 | ||
edb3359d | 21796 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21797 | |
b3b3bada | 21798 | baseaddr = objfile->text_section_offset (); |
c906108c | 21799 | |
94af9270 | 21800 | name = dwarf2_name (die, cu); |
c906108c SS |
21801 | if (name) |
21802 | { | |
34eaf542 | 21803 | int suppress_add = 0; |
94af9270 | 21804 | |
34eaf542 TT |
21805 | if (space) |
21806 | sym = space; | |
21807 | else | |
8c14c3a3 | 21808 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21809 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21810 | |
21811 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21812 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21813 | /* Fortran does not have mangling standard and the mangling does differ |
21814 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21815 | const char *physname |
21816 | = (cu->language == language_fortran | |
21817 | ? dwarf2_full_name (name, die, cu) | |
21818 | : dwarf2_physname (name, die, cu)); | |
21819 | const char *linkagename = dw2_linkage_name (die, cu); | |
21820 | ||
21821 | if (linkagename == nullptr || cu->language == language_ada) | |
21822 | sym->set_linkage_name (physname); | |
21823 | else | |
21824 | { | |
21825 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21826 | sym->set_linkage_name (linkagename); | |
21827 | } | |
f55ee35c | 21828 | |
c906108c | 21829 | /* Default assumptions. |
dda83cd7 | 21830 | Use the passed type or decode it from the die. */ |
176620f1 | 21831 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21832 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21833 | if (type != NULL) |
21834 | SYMBOL_TYPE (sym) = type; | |
21835 | else | |
e7c27a73 | 21836 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21837 | attr = dwarf2_attr (die, |
21838 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21839 | cu); | |
435d3d88 | 21840 | if (attr != nullptr) |
529908cb | 21841 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 21842 | |
edb3359d DJ |
21843 | attr = dwarf2_attr (die, |
21844 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21845 | cu); | |
aa659cfa | 21846 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 21847 | { |
529908cb | 21848 | file_name_index file_index |
aa659cfa | 21849 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 21850 | struct file_entry *fe; |
9a619af0 | 21851 | |
ecfb656c PA |
21852 | if (cu->line_header != NULL) |
21853 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21854 | else |
21855 | fe = NULL; | |
21856 | ||
21857 | if (fe == NULL) | |
b98664d3 | 21858 | complaint (_("file index out of range")); |
8c43009f PA |
21859 | else |
21860 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21861 | } |
21862 | ||
c906108c SS |
21863 | switch (die->tag) |
21864 | { | |
21865 | case DW_TAG_label: | |
e142c38c | 21866 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21867 | if (attr != nullptr) |
3e29f34a MR |
21868 | { |
21869 | CORE_ADDR addr; | |
21870 | ||
95f982e5 | 21871 | addr = attr->as_address (); |
3e29f34a | 21872 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21873 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 21874 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 21875 | } |
8f5c6526 TV |
21876 | else |
21877 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
21878 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21879 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 21880 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21881 | break; |
21882 | case DW_TAG_subprogram: | |
21883 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21884 | finish_block. */ | |
f1e6e072 | 21885 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21886 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 21887 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
21888 | || cu->language == language_ada |
21889 | || cu->language == language_fortran) | |
c906108c | 21890 | { |
dda83cd7 SM |
21891 | /* Subprograms marked external are stored as a global symbol. |
21892 | Ada and Fortran subprograms, whether marked external or | |
21893 | not, are always stored as a global symbol, because we want | |
21894 | to be able to access them globally. For instance, we want | |
21895 | to be able to break on a nested subprogram without having | |
21896 | to specify the context. */ | |
c24bdb02 | 21897 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21898 | } |
21899 | else | |
21900 | { | |
e37fd15a | 21901 | list_to_add = cu->list_in_scope; |
c906108c SS |
21902 | } |
21903 | break; | |
edb3359d DJ |
21904 | case DW_TAG_inlined_subroutine: |
21905 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21906 | finish_block. */ | |
f1e6e072 | 21907 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21908 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21909 | list_to_add = cu->list_in_scope; |
edb3359d | 21910 | break; |
34eaf542 TT |
21911 | case DW_TAG_template_value_param: |
21912 | suppress_add = 1; | |
21913 | /* Fall through. */ | |
72929c62 | 21914 | case DW_TAG_constant: |
c906108c | 21915 | case DW_TAG_variable: |
254e6b9e | 21916 | case DW_TAG_member: |
0963b4bd MS |
21917 | /* Compilation with minimal debug info may result in |
21918 | variables with missing type entries. Change the | |
21919 | misleading `void' type to something sensible. */ | |
78134374 | 21920 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 21921 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21922 | |
e142c38c | 21923 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21924 | /* In the case of DW_TAG_member, we should only be called for |
21925 | static const members. */ | |
21926 | if (die->tag == DW_TAG_member) | |
21927 | { | |
3863f96c DE |
21928 | /* dwarf2_add_field uses die_is_declaration, |
21929 | so we do the same. */ | |
254e6b9e DE |
21930 | gdb_assert (die_is_declaration (die, cu)); |
21931 | gdb_assert (attr); | |
21932 | } | |
435d3d88 | 21933 | if (attr != nullptr) |
c906108c | 21934 | { |
e7c27a73 | 21935 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21936 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21937 | if (!suppress_add) |
34eaf542 | 21938 | { |
c45bc3f8 | 21939 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 21940 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21941 | else |
e37fd15a | 21942 | list_to_add = cu->list_in_scope; |
34eaf542 | 21943 | } |
c906108c SS |
21944 | break; |
21945 | } | |
e142c38c | 21946 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21947 | if (attr != nullptr) |
c906108c | 21948 | { |
e7c27a73 | 21949 | var_decode_location (attr, sym, cu); |
e142c38c | 21950 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21951 | |
21952 | /* Fortran explicitly imports any global symbols to the local | |
21953 | scope by DW_TAG_common_block. */ | |
21954 | if (cu->language == language_fortran && die->parent | |
21955 | && die->parent->tag == DW_TAG_common_block) | |
21956 | attr2 = NULL; | |
21957 | ||
caac4577 JG |
21958 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21959 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 21960 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
21961 | { |
21962 | /* When a static variable is eliminated by the linker, | |
21963 | the corresponding debug information is not stripped | |
21964 | out, but the variable address is set to null; | |
21965 | do not add such variables into symbol table. */ | |
21966 | } | |
c45bc3f8 | 21967 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 21968 | { |
4b610737 TT |
21969 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21970 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 21971 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
21972 | { |
21973 | /* A global static variable might be subject to | |
21974 | copy relocation. We first check for a local | |
21975 | minsym, though, because maybe the symbol was | |
21976 | marked hidden, in which case this would not | |
21977 | apply. */ | |
21978 | bound_minimal_symbol found | |
21979 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21980 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21981 | if (found.minsym != nullptr) |
21982 | sym->maybe_copied = 1; | |
21983 | } | |
f55ee35c | 21984 | |
1c809c68 TT |
21985 | /* A variable with DW_AT_external is never static, |
21986 | but it may be block-scoped. */ | |
804d2729 | 21987 | list_to_add |
c24bdb02 KS |
21988 | = ((cu->list_in_scope |
21989 | == cu->get_builder ()->get_file_symbols ()) | |
21990 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21991 | : cu->list_in_scope); |
1c809c68 | 21992 | } |
c906108c | 21993 | else |
e37fd15a | 21994 | list_to_add = cu->list_in_scope; |
c906108c SS |
21995 | } |
21996 | else | |
21997 | { | |
21998 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
21999 | If it is an external symbol and we have type information |
22000 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22001 | The address of the variable will then be determined from | |
22002 | the minimal symbol table whenever the variable is | |
22003 | referenced. */ | |
e142c38c | 22004 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22005 | |
22006 | /* Fortran explicitly imports any global symbols to the local | |
22007 | scope by DW_TAG_common_block. */ | |
22008 | if (cu->language == language_fortran && die->parent | |
22009 | && die->parent->tag == DW_TAG_common_block) | |
22010 | { | |
22011 | /* SYMBOL_CLASS doesn't matter here because | |
22012 | read_common_block is going to reset it. */ | |
22013 | if (!suppress_add) | |
22014 | list_to_add = cu->list_in_scope; | |
22015 | } | |
c45bc3f8 | 22016 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22017 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22018 | { |
0fe7935b DJ |
22019 | /* A variable with DW_AT_external is never static, but it |
22020 | may be block-scoped. */ | |
804d2729 | 22021 | list_to_add |
c24bdb02 KS |
22022 | = ((cu->list_in_scope |
22023 | == cu->get_builder ()->get_file_symbols ()) | |
22024 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22025 | : cu->list_in_scope); |
0fe7935b | 22026 | |
f1e6e072 | 22027 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22028 | } |
442ddf59 JK |
22029 | else if (!die_is_declaration (die, cu)) |
22030 | { | |
22031 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22032 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22033 | if (!suppress_add) |
22034 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22035 | } |
c906108c SS |
22036 | } |
22037 | break; | |
22038 | case DW_TAG_formal_parameter: | |
a60f3166 | 22039 | { |
4cf88725 | 22040 | SYMBOL_IS_ARGUMENT (sym) = 1; |
a60f3166 | 22041 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22042 | if (attr != nullptr) |
a60f3166 TT |
22043 | { |
22044 | var_decode_location (attr, sym, cu); | |
22045 | } | |
22046 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22047 | if (attr != nullptr) |
a60f3166 TT |
22048 | { |
22049 | dwarf2_const_value (attr, sym, cu); | |
22050 | } | |
f346a30d | 22051 | |
a60f3166 TT |
22052 | list_to_add = cu->list_in_scope; |
22053 | } | |
c906108c SS |
22054 | break; |
22055 | case DW_TAG_unspecified_parameters: | |
22056 | /* From varargs functions; gdb doesn't seem to have any | |
22057 | interest in this information, so just ignore it for now. | |
22058 | (FIXME?) */ | |
22059 | break; | |
34eaf542 TT |
22060 | case DW_TAG_template_type_param: |
22061 | suppress_add = 1; | |
22062 | /* Fall through. */ | |
c906108c | 22063 | case DW_TAG_class_type: |
680b30c7 | 22064 | case DW_TAG_interface_type: |
c906108c SS |
22065 | case DW_TAG_structure_type: |
22066 | case DW_TAG_union_type: | |
72019c9c | 22067 | case DW_TAG_set_type: |
c906108c | 22068 | case DW_TAG_enumeration_type: |
f1e6e072 | 22069 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22070 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22071 | |
63d06c5c | 22072 | { |
9c37b5ae | 22073 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22074 | really ever be static objects: otherwise, if you try |
22075 | to, say, break of a class's method and you're in a file | |
22076 | which doesn't mention that class, it won't work unless | |
22077 | the check for all static symbols in lookup_symbol_aux | |
22078 | saves you. See the OtherFileClass tests in | |
22079 | gdb.c++/namespace.exp. */ | |
22080 | ||
e37fd15a | 22081 | if (!suppress_add) |
34eaf542 | 22082 | { |
c24bdb02 | 22083 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22084 | list_to_add |
c24bdb02 | 22085 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22086 | && cu->language == language_cplus |
c24bdb02 | 22087 | ? builder->get_global_symbols () |
804d2729 | 22088 | : cu->list_in_scope); |
63d06c5c | 22089 | |
64382290 | 22090 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22091 | ... }" also defines a typedef for "foo". */ |
64382290 | 22092 | if (cu->language == language_cplus |
45280282 | 22093 | || cu->language == language_ada |
c44af4eb TT |
22094 | || cu->language == language_d |
22095 | || cu->language == language_rust) | |
64382290 TT |
22096 | { |
22097 | /* The symbol's name is already allocated along | |
22098 | with this objfile, so we don't need to | |
22099 | duplicate it for the type. */ | |
7d93a1e0 | 22100 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22101 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22102 | } |
63d06c5c DC |
22103 | } |
22104 | } | |
c906108c SS |
22105 | break; |
22106 | case DW_TAG_typedef: | |
f1e6e072 | 22107 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22108 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22109 | list_to_add = cu->list_in_scope; |
63d06c5c | 22110 | break; |
d8f62e84 | 22111 | case DW_TAG_array_type: |
c906108c | 22112 | case DW_TAG_base_type: |
dda83cd7 | 22113 | case DW_TAG_subrange_type: |
f1e6e072 | 22114 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22115 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22116 | list_to_add = cu->list_in_scope; |
c906108c SS |
22117 | break; |
22118 | case DW_TAG_enumerator: | |
e142c38c | 22119 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22120 | if (attr != nullptr) |
c906108c | 22121 | { |
e7c27a73 | 22122 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22123 | } |
63d06c5c DC |
22124 | { |
22125 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22126 | DW_TAG_class_type, etc. block. */ | |
22127 | ||
804d2729 | 22128 | list_to_add |
c24bdb02 | 22129 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22130 | && cu->language == language_cplus |
c24bdb02 | 22131 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22132 | : cu->list_in_scope); |
63d06c5c | 22133 | } |
c906108c | 22134 | break; |
74921315 | 22135 | case DW_TAG_imported_declaration: |
5c4e30ca | 22136 | case DW_TAG_namespace: |
f1e6e072 | 22137 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22138 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22139 | break; |
530e8392 KB |
22140 | case DW_TAG_module: |
22141 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22142 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22143 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22144 | break; |
4357ac6c | 22145 | case DW_TAG_common_block: |
f1e6e072 | 22146 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22147 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22148 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22149 | break; |
c906108c SS |
22150 | default: |
22151 | /* Not a tag we recognize. Hopefully we aren't processing | |
22152 | trash data, but since we must specifically ignore things | |
22153 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22154 | this point. */ |
b98664d3 | 22155 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22156 | dwarf_tag_name (die->tag)); |
c906108c SS |
22157 | break; |
22158 | } | |
df8a16a1 | 22159 | |
e37fd15a SW |
22160 | if (suppress_add) |
22161 | { | |
22162 | sym->hash_next = objfile->template_symbols; | |
22163 | objfile->template_symbols = sym; | |
22164 | list_to_add = NULL; | |
22165 | } | |
22166 | ||
22167 | if (list_to_add != NULL) | |
d3cb6808 | 22168 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22169 | |
df8a16a1 DJ |
22170 | /* For the benefit of old versions of GCC, check for anonymous |
22171 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22172 | if (!cu->processing_has_namespace_info |
94af9270 | 22173 | && cu->language == language_cplus) |
c24bdb02 | 22174 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22175 | } |
22176 | return (sym); | |
22177 | } | |
22178 | ||
98bfdba5 PA |
22179 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22180 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22181 | standard (v4) is not entirely clear about the meaning of using | |
22182 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22183 | wider than the data. The conclusion of a discussion on the DWARF | |
22184 | list was that this is unspecified. We choose to always zero-extend | |
22185 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22186 | |
98bfdba5 | 22187 | static gdb_byte * |
ff39bb5e | 22188 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22189 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22190 | { |
5e22e966 | 22191 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22192 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22193 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22194 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22195 | |
22196 | if (bits < sizeof (*value) * 8) | |
22197 | { | |
22198 | l &= ((LONGEST) 1 << bits) - 1; | |
22199 | *value = l; | |
22200 | } | |
22201 | else if (bits == sizeof (*value) * 8) | |
22202 | *value = l; | |
22203 | else | |
22204 | { | |
224c3ddb | 22205 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22206 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22207 | return bytes; | |
22208 | } | |
22209 | ||
22210 | return NULL; | |
22211 | } | |
22212 | ||
22213 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22214 | the value does not fit in *VALUE, set *BYTES - either already | |
22215 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22216 | or, set *BATON, if we translated the constant to a location | |
22217 | expression. */ | |
22218 | ||
22219 | static void | |
ff39bb5e | 22220 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22221 | const char *name, struct obstack *obstack, |
22222 | struct dwarf2_cu *cu, | |
d521ce57 | 22223 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22224 | struct dwarf2_locexpr_baton **baton) |
22225 | { | |
5e22e966 | 22226 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22227 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22228 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22229 | struct dwarf_block *blk; |
98bfdba5 PA |
22230 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22231 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22232 | ||
22233 | *value = 0; | |
22234 | *bytes = NULL; | |
22235 | *baton = NULL; | |
c906108c SS |
22236 | |
22237 | switch (attr->form) | |
22238 | { | |
22239 | case DW_FORM_addr: | |
336d760d | 22240 | case DW_FORM_addrx: |
3019eac3 | 22241 | case DW_FORM_GNU_addr_index: |
ac56253d | 22242 | { |
ac56253d TT |
22243 | gdb_byte *data; |
22244 | ||
98bfdba5 PA |
22245 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22246 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22247 | cu_header->addr_size, |
98bfdba5 | 22248 | TYPE_LENGTH (type)); |
ac56253d TT |
22249 | /* Symbols of this form are reasonably rare, so we just |
22250 | piggyback on the existing location code rather than writing | |
22251 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22252 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22253 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22254 | (*baton)->per_cu = cu->per_cu; |
22255 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22256 | |
98bfdba5 | 22257 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22258 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22259 | (*baton)->data = data; |
ac56253d TT |
22260 | |
22261 | data[0] = DW_OP_addr; | |
22262 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22263 | byte_order, attr->as_address ()); |
ac56253d | 22264 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22265 | } |
c906108c | 22266 | break; |
4ac36638 | 22267 | case DW_FORM_string: |
93b5768b | 22268 | case DW_FORM_strp: |
cf532bd1 | 22269 | case DW_FORM_strx: |
3019eac3 | 22270 | case DW_FORM_GNU_str_index: |
36586728 | 22271 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22272 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22273 | directly to it. */ |
2c830f54 | 22274 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22275 | break; |
c906108c SS |
22276 | case DW_FORM_block1: |
22277 | case DW_FORM_block2: | |
22278 | case DW_FORM_block4: | |
22279 | case DW_FORM_block: | |
2dc7f7b3 | 22280 | case DW_FORM_exprloc: |
0224619f | 22281 | case DW_FORM_data16: |
9d2246fc | 22282 | blk = attr->as_block (); |
98bfdba5 PA |
22283 | if (TYPE_LENGTH (type) != blk->size) |
22284 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22285 | TYPE_LENGTH (type)); | |
22286 | *bytes = blk->data; | |
c906108c | 22287 | break; |
2df3850c JM |
22288 | |
22289 | /* The DW_AT_const_value attributes are supposed to carry the | |
22290 | symbol's value "represented as it would be on the target | |
22291 | architecture." By the time we get here, it's already been | |
22292 | converted to host endianness, so we just need to sign- or | |
22293 | zero-extend it as appropriate. */ | |
22294 | case DW_FORM_data1: | |
3aef2284 | 22295 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22296 | break; |
c906108c | 22297 | case DW_FORM_data2: |
3aef2284 | 22298 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22299 | break; |
c906108c | 22300 | case DW_FORM_data4: |
3aef2284 | 22301 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22302 | break; |
c906108c | 22303 | case DW_FORM_data8: |
3aef2284 | 22304 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22305 | break; |
22306 | ||
c906108c | 22307 | case DW_FORM_sdata: |
663c44ac | 22308 | case DW_FORM_implicit_const: |
1bc397c5 | 22309 | *value = attr->as_signed (); |
2df3850c JM |
22310 | break; |
22311 | ||
c906108c | 22312 | case DW_FORM_udata: |
529908cb | 22313 | *value = attr->as_unsigned (); |
c906108c | 22314 | break; |
2df3850c | 22315 | |
c906108c | 22316 | default: |
b98664d3 | 22317 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22318 | dwarf_form_name (attr->form)); |
98bfdba5 | 22319 | *value = 0; |
c906108c SS |
22320 | break; |
22321 | } | |
22322 | } | |
22323 | ||
2df3850c | 22324 | |
98bfdba5 PA |
22325 | /* Copy constant value from an attribute to a symbol. */ |
22326 | ||
2df3850c | 22327 | static void |
ff39bb5e | 22328 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22329 | struct dwarf2_cu *cu) |
2df3850c | 22330 | { |
5e22e966 | 22331 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22332 | LONGEST value; |
d521ce57 | 22333 | const gdb_byte *bytes; |
98bfdba5 | 22334 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22335 | |
98bfdba5 | 22336 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22337 | sym->print_name (), |
98bfdba5 PA |
22338 | &objfile->objfile_obstack, cu, |
22339 | &value, &bytes, &baton); | |
2df3850c | 22340 | |
98bfdba5 PA |
22341 | if (baton != NULL) |
22342 | { | |
98bfdba5 | 22343 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22344 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22345 | } |
22346 | else if (bytes != NULL) | |
22347 | { | |
22348 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22349 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22350 | } |
22351 | else | |
22352 | { | |
22353 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22354 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22355 | } |
2df3850c JM |
22356 | } |
22357 | ||
c906108c SS |
22358 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22359 | ||
22360 | static struct type * | |
e7c27a73 | 22361 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22362 | { |
c906108c | 22363 | struct attribute *type_attr; |
c906108c | 22364 | |
e142c38c | 22365 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22366 | if (!type_attr) |
22367 | { | |
5e22e966 | 22368 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22369 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22370 | return objfile_type (objfile)->builtin_void; |
c906108c | 22371 | } |
348e048f | 22372 | |
673bfd45 | 22373 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22374 | } |
22375 | ||
b4ba55a1 JB |
22376 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22377 | that allows to find parallel types through that information instead | |
22378 | of having to do expensive parallel lookups by type name. */ | |
22379 | ||
22380 | static int | |
22381 | need_gnat_info (struct dwarf2_cu *cu) | |
22382 | { | |
de4cb04a JB |
22383 | /* Assume that the Ada compiler was GNAT, which always produces |
22384 | the auxiliary information. */ | |
22385 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22386 | } |
22387 | ||
b4ba55a1 JB |
22388 | /* Return the auxiliary type of the die in question using its |
22389 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22390 | attribute is not present. */ | |
22391 | ||
22392 | static struct type * | |
22393 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22394 | { | |
b4ba55a1 | 22395 | struct attribute *type_attr; |
b4ba55a1 JB |
22396 | |
22397 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22398 | if (!type_attr) | |
22399 | return NULL; | |
22400 | ||
673bfd45 | 22401 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22402 | } |
22403 | ||
22404 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22405 | descriptive type accordingly. */ | |
22406 | ||
22407 | static void | |
22408 | set_descriptive_type (struct type *type, struct die_info *die, | |
22409 | struct dwarf2_cu *cu) | |
22410 | { | |
22411 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22412 | ||
22413 | if (descriptive_type) | |
22414 | { | |
22415 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22416 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22417 | } | |
22418 | } | |
22419 | ||
c906108c SS |
22420 | /* Return the containing type of the die in question using its |
22421 | DW_AT_containing_type attribute. */ | |
22422 | ||
22423 | static struct type * | |
e7c27a73 | 22424 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22425 | { |
c906108c | 22426 | struct attribute *type_attr; |
5e22e966 | 22427 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22428 | |
e142c38c | 22429 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22430 | if (!type_attr) |
22431 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22432 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22433 | |
673bfd45 | 22434 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22435 | } |
22436 | ||
ac9ec31b DE |
22437 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22438 | ||
22439 | static struct type * | |
22440 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22441 | { | |
976ca316 SM |
22442 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22443 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22444 | char *saved; |
ac9ec31b | 22445 | |
528e1572 SM |
22446 | std::string message |
22447 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22448 | objfile_name (objfile), | |
22449 | sect_offset_str (cu->header.sect_off), | |
22450 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22451 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22452 | |
19f392bc | 22453 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22454 | } |
22455 | ||
673bfd45 | 22456 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22457 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22458 | DW_AT_containing_type. | |
673bfd45 DE |
22459 | If there is no type substitute an error marker. */ |
22460 | ||
c906108c | 22461 | static struct type * |
ff39bb5e | 22462 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22463 | struct dwarf2_cu *cu) |
c906108c | 22464 | { |
976ca316 SM |
22465 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22466 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22467 | struct type *this_type; |
22468 | ||
ac9ec31b DE |
22469 | gdb_assert (attr->name == DW_AT_type |
22470 | || attr->name == DW_AT_GNAT_descriptive_type | |
22471 | || attr->name == DW_AT_containing_type); | |
22472 | ||
673bfd45 DE |
22473 | /* First see if we have it cached. */ |
22474 | ||
36586728 TT |
22475 | if (attr->form == DW_FORM_GNU_ref_alt) |
22476 | { | |
22477 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22478 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22479 | |
976ca316 SM |
22480 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22481 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22482 | } |
cd6c91b4 | 22483 | else if (attr->form_is_ref ()) |
673bfd45 | 22484 | { |
0826b30a | 22485 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22486 | |
976ca316 | 22487 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22488 | } |
55f1336d | 22489 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22490 | { |
630ed6b9 | 22491 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22492 | |
ac9ec31b | 22493 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22494 | } |
22495 | else | |
22496 | { | |
b98664d3 | 22497 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22498 | " at %s [in module %s]"), |
22499 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22500 | objfile_name (objfile)); |
ac9ec31b | 22501 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22502 | } |
22503 | ||
22504 | /* If not cached we need to read it in. */ | |
22505 | ||
22506 | if (this_type == NULL) | |
22507 | { | |
ac9ec31b | 22508 | struct die_info *type_die = NULL; |
673bfd45 DE |
22509 | struct dwarf2_cu *type_cu = cu; |
22510 | ||
cd6c91b4 | 22511 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22512 | type_die = follow_die_ref (die, attr, &type_cu); |
22513 | if (type_die == NULL) | |
22514 | return build_error_marker_type (cu, die); | |
22515 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22516 | from an inter-CU reference and the type's CU got expanded before |
22517 | ours. */ | |
ac9ec31b | 22518 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22519 | } |
22520 | ||
22521 | /* If we still don't have a type use an error marker. */ | |
22522 | ||
22523 | if (this_type == NULL) | |
ac9ec31b | 22524 | return build_error_marker_type (cu, die); |
673bfd45 | 22525 | |
f792889a | 22526 | return this_type; |
c906108c SS |
22527 | } |
22528 | ||
673bfd45 DE |
22529 | /* Return the type in DIE, CU. |
22530 | Returns NULL for invalid types. | |
22531 | ||
02142a6c | 22532 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22533 | and only reads the die in if necessary. |
22534 | ||
22535 | NOTE: This can be called when reading in partial or full symbols. */ | |
22536 | ||
f792889a | 22537 | static struct type * |
e7c27a73 | 22538 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22539 | { |
f792889a DJ |
22540 | struct type *this_type; |
22541 | ||
22542 | this_type = get_die_type (die, cu); | |
22543 | if (this_type) | |
22544 | return this_type; | |
22545 | ||
673bfd45 DE |
22546 | return read_type_die_1 (die, cu); |
22547 | } | |
22548 | ||
22549 | /* Read the type in DIE, CU. | |
22550 | Returns NULL for invalid types. */ | |
22551 | ||
22552 | static struct type * | |
22553 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22554 | { | |
22555 | struct type *this_type = NULL; | |
22556 | ||
c906108c SS |
22557 | switch (die->tag) |
22558 | { | |
22559 | case DW_TAG_class_type: | |
680b30c7 | 22560 | case DW_TAG_interface_type: |
c906108c SS |
22561 | case DW_TAG_structure_type: |
22562 | case DW_TAG_union_type: | |
f792889a | 22563 | this_type = read_structure_type (die, cu); |
c906108c SS |
22564 | break; |
22565 | case DW_TAG_enumeration_type: | |
f792889a | 22566 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22567 | break; |
22568 | case DW_TAG_subprogram: | |
22569 | case DW_TAG_subroutine_type: | |
edb3359d | 22570 | case DW_TAG_inlined_subroutine: |
f792889a | 22571 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22572 | break; |
22573 | case DW_TAG_array_type: | |
f792889a | 22574 | this_type = read_array_type (die, cu); |
c906108c | 22575 | break; |
72019c9c | 22576 | case DW_TAG_set_type: |
f792889a | 22577 | this_type = read_set_type (die, cu); |
72019c9c | 22578 | break; |
c906108c | 22579 | case DW_TAG_pointer_type: |
f792889a | 22580 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22581 | break; |
22582 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22583 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22584 | break; |
22585 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22586 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22587 | break; | |
22588 | case DW_TAG_rvalue_reference_type: | |
22589 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22590 | break; |
22591 | case DW_TAG_const_type: | |
f792889a | 22592 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22593 | break; |
22594 | case DW_TAG_volatile_type: | |
f792889a | 22595 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22596 | break; |
06d66ee9 TT |
22597 | case DW_TAG_restrict_type: |
22598 | this_type = read_tag_restrict_type (die, cu); | |
22599 | break; | |
c906108c | 22600 | case DW_TAG_string_type: |
f792889a | 22601 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22602 | break; |
22603 | case DW_TAG_typedef: | |
f792889a | 22604 | this_type = read_typedef (die, cu); |
c906108c | 22605 | break; |
a02abb62 | 22606 | case DW_TAG_subrange_type: |
f792889a | 22607 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22608 | break; |
c906108c | 22609 | case DW_TAG_base_type: |
f792889a | 22610 | this_type = read_base_type (die, cu); |
c906108c | 22611 | break; |
81a17f79 | 22612 | case DW_TAG_unspecified_type: |
f792889a | 22613 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22614 | break; |
0114d602 DJ |
22615 | case DW_TAG_namespace: |
22616 | this_type = read_namespace_type (die, cu); | |
22617 | break; | |
f55ee35c JK |
22618 | case DW_TAG_module: |
22619 | this_type = read_module_type (die, cu); | |
22620 | break; | |
a2c2acaf MW |
22621 | case DW_TAG_atomic_type: |
22622 | this_type = read_tag_atomic_type (die, cu); | |
22623 | break; | |
c906108c | 22624 | default: |
b98664d3 | 22625 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22626 | dwarf_tag_name (die->tag)); |
c906108c SS |
22627 | break; |
22628 | } | |
63d06c5c | 22629 | |
f792889a | 22630 | return this_type; |
63d06c5c DC |
22631 | } |
22632 | ||
abc72ce4 DE |
22633 | /* See if we can figure out if the class lives in a namespace. We do |
22634 | this by looking for a member function; its demangled name will | |
22635 | contain namespace info, if there is any. | |
22636 | Return the computed name or NULL. | |
22637 | Space for the result is allocated on the objfile's obstack. | |
22638 | This is the full-die version of guess_partial_die_structure_name. | |
22639 | In this case we know DIE has no useful parent. */ | |
22640 | ||
43816ebc | 22641 | static const char * |
abc72ce4 DE |
22642 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22643 | { | |
22644 | struct die_info *spec_die; | |
22645 | struct dwarf2_cu *spec_cu; | |
22646 | struct die_info *child; | |
5e22e966 | 22647 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22648 | |
22649 | spec_cu = cu; | |
22650 | spec_die = die_specification (die, &spec_cu); | |
22651 | if (spec_die != NULL) | |
22652 | { | |
22653 | die = spec_die; | |
22654 | cu = spec_cu; | |
22655 | } | |
22656 | ||
22657 | for (child = die->child; | |
22658 | child != NULL; | |
22659 | child = child->sibling) | |
22660 | { | |
22661 | if (child->tag == DW_TAG_subprogram) | |
22662 | { | |
73b9be8b | 22663 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22664 | |
7d45c7c3 | 22665 | if (linkage_name != NULL) |
abc72ce4 | 22666 | { |
43816ebc | 22667 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22668 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22669 | const char *name = NULL; |
abc72ce4 DE |
22670 | |
22671 | if (actual_name != NULL) | |
22672 | { | |
15d034d0 | 22673 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22674 | |
22675 | if (die_name != NULL | |
43816ebc | 22676 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22677 | { |
22678 | /* Strip off the class name from the full name. | |
22679 | We want the prefix. */ | |
22680 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22681 | int actual_name_len = strlen (actual_name.get ()); |
22682 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22683 | |
22684 | /* Test for '::' as a sanity check. */ | |
22685 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22686 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22687 | name = obstack_strndup ( |
e3b94546 | 22688 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22689 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22690 | } |
22691 | } | |
abc72ce4 DE |
22692 | return name; |
22693 | } | |
22694 | } | |
22695 | } | |
22696 | ||
22697 | return NULL; | |
22698 | } | |
22699 | ||
96408a79 SA |
22700 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22701 | prefix part in such case. See | |
22702 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22703 | ||
a121b7c1 | 22704 | static const char * |
96408a79 SA |
22705 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22706 | { | |
22707 | struct attribute *attr; | |
e6a959d6 | 22708 | const char *base; |
96408a79 SA |
22709 | |
22710 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22711 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22712 | return NULL; | |
22713 | ||
7d45c7c3 | 22714 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22715 | return NULL; |
22716 | ||
73b9be8b | 22717 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22718 | const char *attr_name = attr->as_string (); |
22719 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22720 | return NULL; |
22721 | ||
22722 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22723 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22724 | |
22725 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22726 | base = strrchr (attr_name, ':'); |
22727 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22728 | return ""; |
22729 | ||
5e22e966 | 22730 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22731 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22732 | attr_name, |
22733 | &base[-1] - attr_name); | |
96408a79 SA |
22734 | } |
22735 | ||
fdde2d81 | 22736 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22737 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22738 | |
0114d602 DJ |
22739 | For example, if we're within the method foo() in the following |
22740 | code: | |
22741 | ||
22742 | namespace N { | |
22743 | class C { | |
22744 | void foo () { | |
22745 | } | |
22746 | }; | |
22747 | } | |
22748 | ||
22749 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22750 | |
0d5cff50 | 22751 | static const char * |
e142c38c | 22752 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22753 | { |
976ca316 | 22754 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22755 | struct die_info *parent, *spec_die; |
22756 | struct dwarf2_cu *spec_cu; | |
22757 | struct type *parent_type; | |
a121b7c1 | 22758 | const char *retval; |
63d06c5c | 22759 | |
9c37b5ae | 22760 | if (cu->language != language_cplus |
c44af4eb TT |
22761 | && cu->language != language_fortran && cu->language != language_d |
22762 | && cu->language != language_rust) | |
0114d602 DJ |
22763 | return ""; |
22764 | ||
96408a79 SA |
22765 | retval = anonymous_struct_prefix (die, cu); |
22766 | if (retval) | |
22767 | return retval; | |
22768 | ||
0114d602 DJ |
22769 | /* We have to be careful in the presence of DW_AT_specification. |
22770 | For example, with GCC 3.4, given the code | |
22771 | ||
22772 | namespace N { | |
22773 | void foo() { | |
22774 | // Definition of N::foo. | |
22775 | } | |
22776 | } | |
22777 | ||
22778 | then we'll have a tree of DIEs like this: | |
22779 | ||
22780 | 1: DW_TAG_compile_unit | |
22781 | 2: DW_TAG_namespace // N | |
22782 | 3: DW_TAG_subprogram // declaration of N::foo | |
22783 | 4: DW_TAG_subprogram // definition of N::foo | |
22784 | DW_AT_specification // refers to die #3 | |
22785 | ||
22786 | Thus, when processing die #4, we have to pretend that we're in | |
22787 | the context of its DW_AT_specification, namely the contex of die | |
22788 | #3. */ | |
22789 | spec_cu = cu; | |
22790 | spec_die = die_specification (die, &spec_cu); | |
22791 | if (spec_die == NULL) | |
22792 | parent = die->parent; | |
22793 | else | |
63d06c5c | 22794 | { |
0114d602 DJ |
22795 | parent = spec_die->parent; |
22796 | cu = spec_cu; | |
63d06c5c | 22797 | } |
0114d602 DJ |
22798 | |
22799 | if (parent == NULL) | |
22800 | return ""; | |
98bfdba5 PA |
22801 | else if (parent->building_fullname) |
22802 | { | |
22803 | const char *name; | |
22804 | const char *parent_name; | |
22805 | ||
22806 | /* It has been seen on RealView 2.2 built binaries, | |
22807 | DW_TAG_template_type_param types actually _defined_ as | |
22808 | children of the parent class: | |
22809 | ||
22810 | enum E {}; | |
22811 | template class <class Enum> Class{}; | |
22812 | Class<enum E> class_e; | |
22813 | ||
dda83cd7 SM |
22814 | 1: DW_TAG_class_type (Class) |
22815 | 2: DW_TAG_enumeration_type (E) | |
22816 | 3: DW_TAG_enumerator (enum1:0) | |
22817 | 3: DW_TAG_enumerator (enum2:1) | |
22818 | ... | |
22819 | 2: DW_TAG_template_type_param | |
22820 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
22821 | |
22822 | Besides being broken debug info, it can put GDB into an | |
22823 | infinite loop. Consider: | |
22824 | ||
22825 | When we're building the full name for Class<E>, we'll start | |
22826 | at Class, and go look over its template type parameters, | |
22827 | finding E. We'll then try to build the full name of E, and | |
22828 | reach here. We're now trying to build the full name of E, | |
22829 | and look over the parent DIE for containing scope. In the | |
22830 | broken case, if we followed the parent DIE of E, we'd again | |
22831 | find Class, and once again go look at its template type | |
22832 | arguments, etc., etc. Simply don't consider such parent die | |
22833 | as source-level parent of this die (it can't be, the language | |
22834 | doesn't allow it), and break the loop here. */ | |
22835 | name = dwarf2_name (die, cu); | |
22836 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22837 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22838 | name ? name : "<unknown>", |
22839 | parent_name ? parent_name : "<unknown>"); | |
22840 | return ""; | |
22841 | } | |
63d06c5c | 22842 | else |
0114d602 DJ |
22843 | switch (parent->tag) |
22844 | { | |
63d06c5c | 22845 | case DW_TAG_namespace: |
0114d602 | 22846 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22847 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22848 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22849 | Work around this problem here. */ | |
22850 | if (cu->language == language_cplus | |
7d93a1e0 | 22851 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 22852 | return ""; |
0114d602 | 22853 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 22854 | return parent_type->name (); |
63d06c5c | 22855 | case DW_TAG_class_type: |
680b30c7 | 22856 | case DW_TAG_interface_type: |
63d06c5c | 22857 | case DW_TAG_structure_type: |
0114d602 | 22858 | case DW_TAG_union_type: |
f55ee35c | 22859 | case DW_TAG_module: |
0114d602 | 22860 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
22861 | if (parent_type->name () != NULL) |
22862 | return parent_type->name (); | |
0114d602 DJ |
22863 | else |
22864 | /* An anonymous structure is only allowed non-static data | |
22865 | members; no typedefs, no member functions, et cetera. | |
22866 | So it does not need a prefix. */ | |
22867 | return ""; | |
abc72ce4 | 22868 | case DW_TAG_compile_unit: |
95554aad | 22869 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22870 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22871 | if (cu->language == language_cplus | |
976ca316 | 22872 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
22873 | && die->child != NULL |
22874 | && (die->tag == DW_TAG_class_type | |
22875 | || die->tag == DW_TAG_structure_type | |
22876 | || die->tag == DW_TAG_union_type)) | |
22877 | { | |
43816ebc | 22878 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22879 | if (name != NULL) |
22880 | return name; | |
22881 | } | |
22882 | return ""; | |
0a4b0913 AB |
22883 | case DW_TAG_subprogram: |
22884 | /* Nested subroutines in Fortran get a prefix with the name | |
22885 | of the parent's subroutine. */ | |
22886 | if (cu->language == language_fortran) | |
22887 | { | |
22888 | if ((die->tag == DW_TAG_subprogram) | |
22889 | && (dwarf2_name (parent, cu) != NULL)) | |
22890 | return dwarf2_name (parent, cu); | |
22891 | } | |
22892 | return determine_prefix (parent, cu); | |
3d567982 TT |
22893 | case DW_TAG_enumeration_type: |
22894 | parent_type = read_type_die (parent, cu); | |
3bc440a2 | 22895 | if (parent_type->is_declared_class ()) |
3d567982 | 22896 | { |
7d93a1e0 SM |
22897 | if (parent_type->name () != NULL) |
22898 | return parent_type->name (); | |
3d567982 TT |
22899 | return ""; |
22900 | } | |
22901 | /* Fall through. */ | |
63d06c5c | 22902 | default: |
8176b9b8 | 22903 | return determine_prefix (parent, cu); |
63d06c5c | 22904 | } |
63d06c5c DC |
22905 | } |
22906 | ||
3e43a32a MS |
22907 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22908 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22909 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22910 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22911 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22912 | |
f55ee35c | 22913 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22914 | |
22915 | static char * | |
f55ee35c | 22916 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 22917 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 22918 | { |
f55ee35c | 22919 | const char *lead = ""; |
5c315b68 | 22920 | const char *sep; |
63d06c5c | 22921 | |
3e43a32a MS |
22922 | if (suffix == NULL || suffix[0] == '\0' |
22923 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22924 | sep = ""; |
45280282 IB |
22925 | else if (cu->language == language_d) |
22926 | { | |
22927 | /* For D, the 'main' function could be defined in any module, but it | |
22928 | should never be prefixed. */ | |
22929 | if (strcmp (suffix, "D main") == 0) | |
22930 | { | |
22931 | prefix = ""; | |
22932 | sep = ""; | |
22933 | } | |
22934 | else | |
22935 | sep = "."; | |
22936 | } | |
f55ee35c JK |
22937 | else if (cu->language == language_fortran && physname) |
22938 | { | |
22939 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22940 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22941 | ||
22942 | lead = "__"; | |
22943 | sep = "_MOD_"; | |
22944 | } | |
987504bb JJ |
22945 | else |
22946 | sep = "::"; | |
63d06c5c | 22947 | |
6dd47d34 DE |
22948 | if (prefix == NULL) |
22949 | prefix = ""; | |
22950 | if (suffix == NULL) | |
22951 | suffix = ""; | |
22952 | ||
987504bb JJ |
22953 | if (obs == NULL) |
22954 | { | |
3e43a32a | 22955 | char *retval |
224c3ddb SM |
22956 | = ((char *) |
22957 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22958 | |
f55ee35c JK |
22959 | strcpy (retval, lead); |
22960 | strcat (retval, prefix); | |
6dd47d34 DE |
22961 | strcat (retval, sep); |
22962 | strcat (retval, suffix); | |
63d06c5c DC |
22963 | return retval; |
22964 | } | |
987504bb JJ |
22965 | else |
22966 | { | |
22967 | /* We have an obstack. */ | |
f55ee35c | 22968 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22969 | } |
63d06c5c DC |
22970 | } |
22971 | ||
71c25dea TT |
22972 | /* Get name of a die, return NULL if not found. */ |
22973 | ||
15d034d0 TT |
22974 | static const char * |
22975 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 22976 | struct objfile *objfile) |
71c25dea TT |
22977 | { |
22978 | if (name && cu->language == language_cplus) | |
22979 | { | |
596dc4ad TT |
22980 | gdb::unique_xmalloc_ptr<char> canon_name |
22981 | = cp_canonicalize_string (name); | |
71c25dea | 22982 | |
596dc4ad TT |
22983 | if (canon_name != nullptr) |
22984 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
22985 | } |
22986 | ||
22987 | return name; | |
c906108c SS |
22988 | } |
22989 | ||
96553a0c DE |
22990 | /* Get name of a die, return NULL if not found. |
22991 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22992 | |
15d034d0 | 22993 | static const char * |
e142c38c | 22994 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22995 | { |
22996 | struct attribute *attr; | |
5e22e966 | 22997 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22998 | |
e142c38c | 22999 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23000 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23001 | if (attr_name == nullptr | |
96553a0c | 23002 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23003 | && die->tag != DW_TAG_class_type |
23004 | && die->tag != DW_TAG_interface_type | |
23005 | && die->tag != DW_TAG_structure_type | |
23006 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23007 | return NULL; |
23008 | ||
23009 | switch (die->tag) | |
23010 | { | |
23011 | case DW_TAG_compile_unit: | |
95554aad | 23012 | case DW_TAG_partial_unit: |
71c25dea TT |
23013 | /* Compilation units have a DW_AT_name that is a filename, not |
23014 | a source language identifier. */ | |
23015 | case DW_TAG_enumeration_type: | |
23016 | case DW_TAG_enumerator: | |
23017 | /* These tags always have simple identifiers already; no need | |
23018 | to canonicalize them. */ | |
2c830f54 | 23019 | return attr_name; |
907af001 | 23020 | |
96553a0c | 23021 | case DW_TAG_namespace: |
2c830f54 TT |
23022 | if (attr_name != nullptr) |
23023 | return attr_name; | |
96553a0c DE |
23024 | return CP_ANONYMOUS_NAMESPACE_STR; |
23025 | ||
907af001 UW |
23026 | case DW_TAG_class_type: |
23027 | case DW_TAG_interface_type: | |
23028 | case DW_TAG_structure_type: | |
23029 | case DW_TAG_union_type: | |
23030 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23031 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23032 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23033 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23034 | if (attr_name != nullptr |
23035 | && (startswith (attr_name, "._") | |
23036 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23037 | return NULL; |
53832f31 TT |
23038 | |
23039 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23040 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23041 | if (!attr || attr_name == NULL) |
53832f31 | 23042 | { |
73b9be8b | 23043 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23044 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23045 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23046 | return NULL; |
23047 | ||
2c830f54 | 23048 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23049 | call for the same DIE. */ |
3b64bf15 | 23050 | if (!attr->canonical_string_p ()) |
53832f31 | 23051 | { |
43816ebc | 23052 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23053 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23054 | if (demangled == nullptr) |
23055 | return nullptr; | |
43816ebc | 23056 | |
c6481205 | 23057 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23058 | attr_name = attr->as_string (); |
53832f31 | 23059 | } |
67430cd0 | 23060 | |
2c830f54 TT |
23061 | /* Strip any leading namespaces/classes, keep only the |
23062 | base name. DW_AT_name for named DIEs does not | |
23063 | contain the prefixes. */ | |
23064 | const char *base = strrchr (attr_name, ':'); | |
23065 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23066 | return &base[1]; |
23067 | else | |
2c830f54 | 23068 | return attr_name; |
53832f31 | 23069 | } |
907af001 UW |
23070 | break; |
23071 | ||
71c25dea | 23072 | default: |
907af001 UW |
23073 | break; |
23074 | } | |
23075 | ||
3b64bf15 | 23076 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23077 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23078 | objfile)); | |
2c830f54 | 23079 | return attr->as_string (); |
9219021c DC |
23080 | } |
23081 | ||
23082 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23083 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23084 | containing the return value on output. */ | |
9219021c DC |
23085 | |
23086 | static struct die_info * | |
f2f0e013 | 23087 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23088 | { |
23089 | struct attribute *attr; | |
9219021c | 23090 | |
f2f0e013 | 23091 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23092 | if (attr == NULL) |
23093 | return NULL; | |
23094 | ||
f2f0e013 | 23095 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23096 | } |
23097 | ||
f9aca02d | 23098 | static void |
d97bc12b | 23099 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23100 | { |
23101 | unsigned int i; | |
23102 | ||
d97bc12b | 23103 | print_spaces (indent, f); |
9d8780f0 | 23104 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23105 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23106 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23107 | |
23108 | if (die->parent != NULL) | |
23109 | { | |
23110 | print_spaces (indent, f); | |
9d8780f0 SM |
23111 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23112 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23113 | } |
23114 | ||
23115 | print_spaces (indent, f); | |
23116 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23117 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23118 | |
d97bc12b DE |
23119 | print_spaces (indent, f); |
23120 | fprintf_unfiltered (f, " attributes:\n"); | |
23121 | ||
c906108c SS |
23122 | for (i = 0; i < die->num_attrs; ++i) |
23123 | { | |
d97bc12b DE |
23124 | print_spaces (indent, f); |
23125 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23126 | dwarf_attr_name (die->attrs[i].name), |
23127 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23128 | |
c906108c SS |
23129 | switch (die->attrs[i].form) |
23130 | { | |
c906108c | 23131 | case DW_FORM_addr: |
336d760d | 23132 | case DW_FORM_addrx: |
3019eac3 | 23133 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23134 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23135 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23136 | break; |
23137 | case DW_FORM_block2: | |
23138 | case DW_FORM_block4: | |
23139 | case DW_FORM_block: | |
23140 | case DW_FORM_block1: | |
56eb65bd | 23141 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23142 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23143 | break; |
2dc7f7b3 | 23144 | case DW_FORM_exprloc: |
56eb65bd | 23145 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23146 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23147 | break; |
0224619f JK |
23148 | case DW_FORM_data16: |
23149 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23150 | break; | |
4568ecf9 DE |
23151 | case DW_FORM_ref_addr: |
23152 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23153 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23154 | break; |
36586728 TT |
23155 | case DW_FORM_GNU_ref_alt: |
23156 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23157 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23158 | break; |
10b3939b DJ |
23159 | case DW_FORM_ref1: |
23160 | case DW_FORM_ref2: | |
23161 | case DW_FORM_ref4: | |
4568ecf9 DE |
23162 | case DW_FORM_ref8: |
23163 | case DW_FORM_ref_udata: | |
d97bc12b | 23164 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23165 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23166 | break; |
c906108c SS |
23167 | case DW_FORM_data1: |
23168 | case DW_FORM_data2: | |
23169 | case DW_FORM_data4: | |
ce5d95e1 | 23170 | case DW_FORM_data8: |
c906108c | 23171 | case DW_FORM_udata: |
43bbcdc2 | 23172 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23173 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23174 | break; |
2dc7f7b3 TT |
23175 | case DW_FORM_sec_offset: |
23176 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23177 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23178 | break; |
55f1336d | 23179 | case DW_FORM_ref_sig8: |
ac9ec31b | 23180 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23181 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23182 | break; |
c906108c | 23183 | case DW_FORM_string: |
4bdf3d34 | 23184 | case DW_FORM_strp: |
43988095 | 23185 | case DW_FORM_line_strp: |
cf532bd1 | 23186 | case DW_FORM_strx: |
3019eac3 | 23187 | case DW_FORM_GNU_str_index: |
36586728 | 23188 | case DW_FORM_GNU_strp_alt: |
8285870a | 23189 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23190 | die->attrs[i].as_string () |
23191 | ? die->attrs[i].as_string () : "", | |
23192 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23193 | break; |
23194 | case DW_FORM_flag: | |
c45bc3f8 | 23195 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23196 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23197 | else |
d97bc12b | 23198 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23199 | break; |
2dc7f7b3 TT |
23200 | case DW_FORM_flag_present: |
23201 | fprintf_unfiltered (f, "flag: TRUE"); | |
23202 | break; | |
a8329558 | 23203 | case DW_FORM_indirect: |
0963b4bd MS |
23204 | /* The reader will have reduced the indirect form to |
23205 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23206 | fprintf_unfiltered (f, |
3e43a32a | 23207 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23208 | break; |
1bc397c5 | 23209 | case DW_FORM_sdata: |
663c44ac JK |
23210 | case DW_FORM_implicit_const: |
23211 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23212 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23213 | break; |
c906108c | 23214 | default: |
d97bc12b | 23215 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23216 | die->attrs[i].form); |
d97bc12b | 23217 | break; |
c906108c | 23218 | } |
d97bc12b | 23219 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23220 | } |
23221 | } | |
23222 | ||
f9aca02d | 23223 | static void |
d97bc12b | 23224 | dump_die_for_error (struct die_info *die) |
c906108c | 23225 | { |
d97bc12b DE |
23226 | dump_die_shallow (gdb_stderr, 0, die); |
23227 | } | |
23228 | ||
23229 | static void | |
23230 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23231 | { | |
23232 | int indent = level * 4; | |
23233 | ||
23234 | gdb_assert (die != NULL); | |
23235 | ||
23236 | if (level >= max_level) | |
23237 | return; | |
23238 | ||
23239 | dump_die_shallow (f, indent, die); | |
23240 | ||
23241 | if (die->child != NULL) | |
c906108c | 23242 | { |
d97bc12b DE |
23243 | print_spaces (indent, f); |
23244 | fprintf_unfiltered (f, " Children:"); | |
23245 | if (level + 1 < max_level) | |
23246 | { | |
23247 | fprintf_unfiltered (f, "\n"); | |
23248 | dump_die_1 (f, level + 1, max_level, die->child); | |
23249 | } | |
23250 | else | |
23251 | { | |
3e43a32a MS |
23252 | fprintf_unfiltered (f, |
23253 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23254 | } |
23255 | } | |
23256 | ||
23257 | if (die->sibling != NULL && level > 0) | |
23258 | { | |
23259 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23260 | } |
23261 | } | |
23262 | ||
d97bc12b DE |
23263 | /* This is called from the pdie macro in gdbinit.in. |
23264 | It's not static so gcc will keep a copy callable from gdb. */ | |
23265 | ||
23266 | void | |
23267 | dump_die (struct die_info *die, int max_level) | |
23268 | { | |
23269 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23270 | } | |
23271 | ||
f9aca02d | 23272 | static void |
51545339 | 23273 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23274 | { |
51545339 | 23275 | void **slot; |
c906108c | 23276 | |
9c541725 PA |
23277 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23278 | to_underlying (die->sect_off), | |
b64f50a1 | 23279 | INSERT); |
51545339 DJ |
23280 | |
23281 | *slot = die; | |
c906108c SS |
23282 | } |
23283 | ||
348e048f DE |
23284 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23285 | On entry *REF_CU is the CU of SRC_DIE. | |
23286 | On exit *REF_CU is the CU of the result. */ | |
23287 | ||
23288 | static struct die_info * | |
ff39bb5e | 23289 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23290 | struct dwarf2_cu **ref_cu) |
23291 | { | |
23292 | struct die_info *die; | |
23293 | ||
cd6c91b4 | 23294 | if (attr->form_is_ref ()) |
348e048f | 23295 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23296 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23297 | die = follow_die_sig (src_die, attr, ref_cu); |
23298 | else | |
23299 | { | |
23300 | dump_die_for_error (src_die); | |
23301 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23302 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23303 | } |
23304 | ||
23305 | return die; | |
03dd20cc DJ |
23306 | } |
23307 | ||
5c631832 | 23308 | /* Follow reference OFFSET. |
673bfd45 DE |
23309 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23310 | On exit *REF_CU is the CU of the result. | |
23311 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23312 | |
f9aca02d | 23313 | static struct die_info * |
9c541725 | 23314 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23315 | struct dwarf2_cu **ref_cu) |
c906108c | 23316 | { |
10b3939b | 23317 | struct die_info temp_die; |
f2f0e013 | 23318 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23319 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23320 | |
348e048f DE |
23321 | gdb_assert (cu->per_cu != NULL); |
23322 | ||
98bfdba5 PA |
23323 | target_cu = cu; |
23324 | ||
17e593e9 SM |
23325 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23326 | "source CU contains target offset: %d", | |
23327 | sect_offset_str (cu->per_cu->sect_off), | |
23328 | sect_offset_str (sect_off), | |
23329 | cu->header.offset_in_cu_p (sect_off)); | |
23330 | ||
3019eac3 | 23331 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23332 | { |
23333 | /* .debug_types CUs cannot reference anything outside their CU. | |
23334 | If they need to, they have to reference a signatured type via | |
55f1336d | 23335 | DW_FORM_ref_sig8. */ |
4057dfde | 23336 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23337 | return NULL; |
348e048f | 23338 | } |
36586728 | 23339 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23340 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23341 | { |
23342 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23343 | |
9c541725 | 23344 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23345 | per_objfile); |
03dd20cc | 23346 | |
17e593e9 SM |
23347 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23348 | "target CU DIEs loaded: %d", | |
23349 | sect_offset_str (per_cu->sect_off), | |
23350 | per_objfile->get_cu (per_cu) != nullptr); | |
23351 | ||
616c069a SM |
23352 | /* If necessary, add it to the queue and load its DIEs. |
23353 | ||
23354 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23355 | it doesn't mean they are currently loaded. Since we require them | |
23356 | to be loaded, we must check for ourselves. */ | |
23357 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23358 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23359 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23360 | false, cu->language); | |
03dd20cc | 23361 | |
976ca316 | 23362 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23363 | gdb_assert (target_cu != nullptr); |
10b3939b | 23364 | } |
98bfdba5 PA |
23365 | else if (cu->dies == NULL) |
23366 | { | |
23367 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23368 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23369 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23370 | language_minimal); | |
98bfdba5 | 23371 | } |
c906108c | 23372 | |
f2f0e013 | 23373 | *ref_cu = target_cu; |
9c541725 | 23374 | temp_die.sect_off = sect_off; |
c24bdb02 | 23375 | |
9a3c8263 | 23376 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23377 | &temp_die, |
23378 | to_underlying (sect_off)); | |
5c631832 | 23379 | } |
10b3939b | 23380 | |
5c631832 JK |
23381 | /* Follow reference attribute ATTR of SRC_DIE. |
23382 | On entry *REF_CU is the CU of SRC_DIE. | |
23383 | On exit *REF_CU is the CU of the result. */ | |
23384 | ||
23385 | static struct die_info * | |
ff39bb5e | 23386 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23387 | struct dwarf2_cu **ref_cu) |
23388 | { | |
0826b30a | 23389 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23390 | struct dwarf2_cu *cu = *ref_cu; |
23391 | struct die_info *die; | |
23392 | ||
9c541725 | 23393 | die = follow_die_offset (sect_off, |
36586728 TT |
23394 | (attr->form == DW_FORM_GNU_ref_alt |
23395 | || cu->per_cu->is_dwz), | |
23396 | ref_cu); | |
5c631832 | 23397 | if (!die) |
9d8780f0 SM |
23398 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23399 | "at %s [in module %s]"), | |
23400 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23401 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23402 | |
5c631832 JK |
23403 | return die; |
23404 | } | |
23405 | ||
d4c9a4f8 | 23406 | /* See read.h. */ |
5c631832 JK |
23407 | |
23408 | struct dwarf2_locexpr_baton | |
9c541725 | 23409 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23410 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23411 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23412 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23413 | bool resolve_abstract_p) | |
5c631832 | 23414 | { |
5c631832 JK |
23415 | struct die_info *die; |
23416 | struct attribute *attr; | |
23417 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23418 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23419 | |
976ca316 | 23420 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23421 | if (cu == nullptr) |
976ca316 | 23422 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23423 | |
23424 | if (cu == nullptr) | |
cc12ce38 DE |
23425 | { |
23426 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23427 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23428 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23429 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23430 | } |
918dd910 | 23431 | |
9c541725 | 23432 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23433 | if (!die) |
9d8780f0 SM |
23434 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23435 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23436 | |
23437 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23438 | if (!attr && resolve_abstract_p |
976ca316 SM |
23439 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23440 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23441 | { |
041d9819 | 23442 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23443 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23444 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23445 | |
3360b6e7 | 23446 | for (const auto &cand_off |
976ca316 | 23447 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23448 | { |
3360b6e7 TV |
23449 | struct dwarf2_cu *cand_cu = cu; |
23450 | struct die_info *cand | |
23451 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23452 | if (!cand | |
23453 | || !cand->parent | |
e4a62c65 TV |
23454 | || cand->parent->tag != DW_TAG_subprogram) |
23455 | continue; | |
23456 | ||
23457 | CORE_ADDR pc_low, pc_high; | |
23458 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23459 | if (pc_low == ((CORE_ADDR) -1)) |
23460 | continue; | |
23461 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23462 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23463 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23464 | continue; |
23465 | ||
23466 | die = cand; | |
23467 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23468 | break; | |
23469 | } | |
23470 | } | |
23471 | ||
5c631832 JK |
23472 | if (!attr) |
23473 | { | |
e103e986 JK |
23474 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23475 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23476 | |
e103e986 | 23477 | retval.data = NULL; |
5c631832 JK |
23478 | retval.size = 0; |
23479 | } | |
cd6c91b4 | 23480 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23481 | { |
23482 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23483 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23484 | size_t size; |
23485 | ||
23486 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23487 | ||
23488 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23489 | &size, pc); | |
23490 | retval.size = size; | |
23491 | } | |
5c631832 JK |
23492 | else |
23493 | { | |
4fc6c0d5 | 23494 | if (!attr->form_is_block ()) |
9d8780f0 | 23495 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23496 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23497 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23498 | |
9d2246fc TT |
23499 | struct dwarf_block *block = attr->as_block (); |
23500 | retval.data = block->data; | |
23501 | retval.size = block->size; | |
5c631832 | 23502 | } |
976ca316 | 23503 | retval.per_objfile = per_objfile; |
5c631832 | 23504 | retval.per_cu = cu->per_cu; |
918dd910 | 23505 | |
976ca316 | 23506 | per_objfile->age_comp_units (); |
918dd910 | 23507 | |
5c631832 | 23508 | return retval; |
348e048f DE |
23509 | } |
23510 | ||
d4c9a4f8 | 23511 | /* See read.h. */ |
8b9737bf TT |
23512 | |
23513 | struct dwarf2_locexpr_baton | |
23514 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23515 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23516 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23517 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23518 | { |
9c541725 | 23519 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23520 | |
14095eb3 | 23521 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23522 | get_frame_pc); |
8b9737bf TT |
23523 | } |
23524 | ||
b6807d98 TT |
23525 | /* Write a constant of a given type as target-ordered bytes into |
23526 | OBSTACK. */ | |
23527 | ||
23528 | static const gdb_byte * | |
23529 | write_constant_as_bytes (struct obstack *obstack, | |
23530 | enum bfd_endian byte_order, | |
23531 | struct type *type, | |
23532 | ULONGEST value, | |
23533 | LONGEST *len) | |
23534 | { | |
23535 | gdb_byte *result; | |
23536 | ||
23537 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23538 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23539 | store_unsigned_integer (result, *len, byte_order, value); |
23540 | ||
23541 | return result; | |
23542 | } | |
23543 | ||
d4c9a4f8 | 23544 | /* See read.h. */ |
b6807d98 TT |
23545 | |
23546 | const gdb_byte * | |
9c541725 | 23547 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23548 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23549 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23550 | obstack *obstack, |
b6807d98 TT |
23551 | LONGEST *len) |
23552 | { | |
b6807d98 TT |
23553 | struct die_info *die; |
23554 | struct attribute *attr; | |
23555 | const gdb_byte *result = NULL; | |
23556 | struct type *type; | |
23557 | LONGEST value; | |
23558 | enum bfd_endian byte_order; | |
14095eb3 | 23559 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23560 | |
7188ed02 | 23561 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23562 | if (cu == nullptr) |
23563 | cu = load_cu (per_cu, per_objfile, false); | |
23564 | ||
23565 | if (cu == nullptr) | |
cc12ce38 DE |
23566 | { |
23567 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23568 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23569 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23570 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23571 | } |
b6807d98 | 23572 | |
9c541725 | 23573 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23574 | if (!die) |
9d8780f0 SM |
23575 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23576 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23577 | |
23578 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23579 | if (attr == NULL) | |
23580 | return NULL; | |
23581 | ||
e3b94546 | 23582 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23583 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23584 | ||
23585 | switch (attr->form) | |
23586 | { | |
23587 | case DW_FORM_addr: | |
336d760d | 23588 | case DW_FORM_addrx: |
b6807d98 TT |
23589 | case DW_FORM_GNU_addr_index: |
23590 | { | |
23591 | gdb_byte *tem; | |
23592 | ||
23593 | *len = cu->header.addr_size; | |
224c3ddb | 23594 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23595 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23596 | result = tem; |
23597 | } | |
23598 | break; | |
23599 | case DW_FORM_string: | |
23600 | case DW_FORM_strp: | |
cf532bd1 | 23601 | case DW_FORM_strx: |
b6807d98 TT |
23602 | case DW_FORM_GNU_str_index: |
23603 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23604 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23605 | directly to it. */ |
2c830f54 TT |
23606 | { |
23607 | const char *attr_name = attr->as_string (); | |
23608 | result = (const gdb_byte *) attr_name; | |
23609 | *len = strlen (attr_name); | |
23610 | } | |
b6807d98 TT |
23611 | break; |
23612 | case DW_FORM_block1: | |
23613 | case DW_FORM_block2: | |
23614 | case DW_FORM_block4: | |
23615 | case DW_FORM_block: | |
23616 | case DW_FORM_exprloc: | |
0224619f | 23617 | case DW_FORM_data16: |
9d2246fc TT |
23618 | { |
23619 | struct dwarf_block *block = attr->as_block (); | |
23620 | result = block->data; | |
23621 | *len = block->size; | |
23622 | } | |
b6807d98 TT |
23623 | break; |
23624 | ||
23625 | /* The DW_AT_const_value attributes are supposed to carry the | |
23626 | symbol's value "represented as it would be on the target | |
23627 | architecture." By the time we get here, it's already been | |
23628 | converted to host endianness, so we just need to sign- or | |
23629 | zero-extend it as appropriate. */ | |
23630 | case DW_FORM_data1: | |
23631 | type = die_type (die, cu); | |
23632 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23633 | if (result == NULL) | |
23634 | result = write_constant_as_bytes (obstack, byte_order, | |
23635 | type, value, len); | |
23636 | break; | |
23637 | case DW_FORM_data2: | |
23638 | type = die_type (die, cu); | |
23639 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23640 | if (result == NULL) | |
23641 | result = write_constant_as_bytes (obstack, byte_order, | |
23642 | type, value, len); | |
23643 | break; | |
23644 | case DW_FORM_data4: | |
23645 | type = die_type (die, cu); | |
23646 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23647 | if (result == NULL) | |
23648 | result = write_constant_as_bytes (obstack, byte_order, | |
23649 | type, value, len); | |
23650 | break; | |
23651 | case DW_FORM_data8: | |
23652 | type = die_type (die, cu); | |
23653 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23654 | if (result == NULL) | |
23655 | result = write_constant_as_bytes (obstack, byte_order, | |
23656 | type, value, len); | |
23657 | break; | |
23658 | ||
23659 | case DW_FORM_sdata: | |
663c44ac | 23660 | case DW_FORM_implicit_const: |
b6807d98 TT |
23661 | type = die_type (die, cu); |
23662 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23663 | type, attr->as_signed (), len); |
b6807d98 TT |
23664 | break; |
23665 | ||
23666 | case DW_FORM_udata: | |
23667 | type = die_type (die, cu); | |
23668 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23669 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23670 | break; |
23671 | ||
23672 | default: | |
b98664d3 | 23673 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23674 | dwarf_form_name (attr->form)); |
23675 | break; | |
23676 | } | |
23677 | ||
23678 | return result; | |
23679 | } | |
23680 | ||
d4c9a4f8 | 23681 | /* See read.h. */ |
7942e96e AA |
23682 | |
23683 | struct type * | |
9c541725 | 23684 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23685 | dwarf2_per_cu_data *per_cu, |
23686 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23687 | { |
7942e96e AA |
23688 | struct die_info *die; |
23689 | ||
7188ed02 | 23690 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23691 | if (cu == nullptr) |
23692 | cu = load_cu (per_cu, per_objfile, false); | |
23693 | ||
23694 | if (cu == nullptr) | |
23695 | return nullptr; | |
7942e96e | 23696 | |
9c541725 | 23697 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23698 | if (!die) |
23699 | return NULL; | |
23700 | ||
23701 | return die_type (die, cu); | |
23702 | } | |
23703 | ||
8cb5117c | 23704 | /* See read.h. */ |
8a9b8146 TT |
23705 | |
23706 | struct type * | |
b64f50a1 | 23707 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23708 | dwarf2_per_cu_data *per_cu, |
23709 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23710 | { |
9c541725 | 23711 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23712 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23713 | } |
23714 | ||
ac9ec31b | 23715 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23716 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23717 | On exit *REF_CU is the CU of the result. |
23718 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23719 | |
23720 | static struct die_info * | |
ac9ec31b DE |
23721 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23722 | struct dwarf2_cu **ref_cu) | |
348e048f | 23723 | { |
348e048f | 23724 | struct die_info temp_die; |
4cf88725 | 23725 | struct dwarf2_cu *sig_cu; |
348e048f | 23726 | struct die_info *die; |
976ca316 | 23727 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23728 | |
348e048f | 23729 | |
ac9ec31b DE |
23730 | /* While it might be nice to assert sig_type->type == NULL here, |
23731 | we can get here for DW_AT_imported_declaration where we need | |
23732 | the DIE not the type. */ | |
348e048f | 23733 | |
616c069a | 23734 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 23735 | |
616c069a SM |
23736 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
23737 | it doesn't mean they are currently loaded. Since we require them | |
23738 | to be loaded, we must check for ourselves. */ | |
0d305d5c | 23739 | if (maybe_queue_comp_unit (*ref_cu, sig_type, per_objfile, |
616c069a | 23740 | language_minimal) |
0d305d5c | 23741 | || per_objfile->get_cu (sig_type) == nullptr) |
976ca316 | 23742 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23743 | |
0d305d5c | 23744 | sig_cu = per_objfile->get_cu (sig_type); |
69d751e3 | 23745 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23746 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23747 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23748 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23749 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23750 | if (die) |
23751 | { | |
796a7ff8 DE |
23752 | /* For .gdb_index version 7 keep track of included TUs. |
23753 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23754 | if (per_objfile->per_bfd->index_table != NULL |
23755 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23756 | { |
ae640021 | 23757 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23758 | } |
23759 | ||
348e048f | 23760 | *ref_cu = sig_cu; |
c24bdb02 | 23761 | |
348e048f DE |
23762 | return die; |
23763 | } | |
23764 | ||
ac9ec31b DE |
23765 | return NULL; |
23766 | } | |
23767 | ||
23768 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23769 | On entry *REF_CU is the CU of SRC_DIE. | |
23770 | On exit *REF_CU is the CU of the result. | |
23771 | The result is the DIE of the type. | |
23772 | If the referenced type cannot be found an error is thrown. */ | |
23773 | ||
23774 | static struct die_info * | |
ff39bb5e | 23775 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23776 | struct dwarf2_cu **ref_cu) |
23777 | { | |
630ed6b9 | 23778 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23779 | struct signatured_type *sig_type; |
23780 | struct die_info *die; | |
23781 | ||
23782 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23783 | ||
a2ce51a0 | 23784 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23785 | /* sig_type will be NULL if the signatured type is missing from |
23786 | the debug info. */ | |
23787 | if (sig_type == NULL) | |
23788 | { | |
23789 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
23790 | " from DIE at %s [in module %s]"), |
23791 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23792 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23793 | } |
23794 | ||
23795 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23796 | if (die == NULL) | |
23797 | { | |
23798 | dump_die_for_error (src_die); | |
23799 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23800 | " from DIE at %s [in module %s]"), |
23801 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23802 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23803 | } |
23804 | ||
23805 | return die; | |
23806 | } | |
23807 | ||
23808 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23809 | reading in and processing the type unit if necessary. */ | |
23810 | ||
23811 | static struct type * | |
23812 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23813 | struct dwarf2_cu *cu) | |
23814 | { | |
976ca316 | 23815 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23816 | struct signatured_type *sig_type; |
23817 | struct dwarf2_cu *type_cu; | |
23818 | struct die_info *type_die; | |
23819 | struct type *type; | |
23820 | ||
a2ce51a0 | 23821 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23822 | /* sig_type will be NULL if the signatured type is missing from |
23823 | the debug info. */ | |
23824 | if (sig_type == NULL) | |
23825 | { | |
b98664d3 | 23826 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23827 | " from DIE at %s [in module %s]"), |
23828 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23829 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23830 | return build_error_marker_type (cu, die); |
23831 | } | |
23832 | ||
23833 | /* If we already know the type we're done. */ | |
976ca316 | 23834 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23835 | if (type != nullptr) |
23836 | return type; | |
ac9ec31b DE |
23837 | |
23838 | type_cu = cu; | |
23839 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23840 | if (type_die != NULL) | |
23841 | { | |
23842 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23843 | is created. This is important, for example, because for c++ classes | |
23844 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23845 | type = read_type_die (type_die, type_cu); | |
23846 | if (type == NULL) | |
23847 | { | |
b98664d3 | 23848 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23849 | " referenced from DIE at %s [in module %s]"), |
23850 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23851 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23852 | type = build_error_marker_type (cu, die); |
23853 | } | |
23854 | } | |
23855 | else | |
23856 | { | |
b98664d3 | 23857 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23858 | " from DIE at %s [in module %s]"), |
23859 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23860 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23861 | type = build_error_marker_type (cu, die); |
23862 | } | |
e286671b | 23863 | |
976ca316 | 23864 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
23865 | |
23866 | return type; | |
23867 | } | |
23868 | ||
23869 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23870 | reading in and processing the type unit if necessary. */ | |
23871 | ||
23872 | static struct type * | |
ff39bb5e | 23873 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23874 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23875 | { |
23876 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23877 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23878 | { |
23879 | struct dwarf2_cu *type_cu = cu; | |
23880 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23881 | ||
23882 | return read_type_die (type_die, type_cu); | |
23883 | } | |
23884 | else if (attr->form == DW_FORM_ref_sig8) | |
23885 | { | |
630ed6b9 | 23886 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
23887 | } |
23888 | else | |
23889 | { | |
976ca316 | 23890 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23891 | |
b98664d3 | 23892 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23893 | " at %s [in module %s]"), |
23894 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 23895 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23896 | return build_error_marker_type (cu, die); |
23897 | } | |
348e048f DE |
23898 | } |
23899 | ||
e5fe5e75 | 23900 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23901 | |
23902 | static void | |
ab432490 SM |
23903 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
23904 | dwarf2_per_objfile *per_objfile) | |
348e048f | 23905 | { |
52dc124a | 23906 | struct signatured_type *sig_type; |
348e048f | 23907 | |
f4dc4d17 | 23908 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 23909 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 23910 | |
6721b2ec DE |
23911 | /* We have the per_cu, but we need the signatured_type. |
23912 | Fortunately this is an easy translation. */ | |
23913 | gdb_assert (per_cu->is_debug_types); | |
23914 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23915 | |
7188ed02 | 23916 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23917 | |
ab432490 | 23918 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23919 | |
7188ed02 | 23920 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
23921 | } |
23922 | ||
3019eac3 DE |
23923 | /* Read in a signatured type and build its CU and DIEs. |
23924 | If the type is a stub for the real type in a DWO file, | |
23925 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23926 | |
23927 | static void | |
ab432490 SM |
23928 | read_signatured_type (signatured_type *sig_type, |
23929 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 23930 | { |
0d305d5c TT |
23931 | gdb_assert (sig_type->is_debug_types); |
23932 | gdb_assert (per_objfile->get_cu (sig_type) == nullptr); | |
348e048f | 23933 | |
0d305d5c | 23934 | cutu_reader reader (sig_type, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
23935 | |
23936 | if (!reader.dummy_p) | |
23937 | { | |
23938 | struct dwarf2_cu *cu = reader.cu; | |
23939 | const gdb_byte *info_ptr = reader.info_ptr; | |
23940 | ||
23941 | gdb_assert (cu->die_hash == NULL); | |
23942 | cu->die_hash = | |
23943 | htab_create_alloc_ex (cu->header.length / 12, | |
23944 | die_hash, | |
23945 | die_eq, | |
23946 | NULL, | |
23947 | &cu->comp_unit_obstack, | |
23948 | hashtab_obstack_allocate, | |
23949 | dummy_obstack_deallocate); | |
23950 | ||
3e225074 | 23951 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
23952 | reader.comp_unit_die->child |
23953 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23954 | reader.comp_unit_die); | |
23955 | cu->dies = reader.comp_unit_die; | |
23956 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23957 | ||
23958 | /* We try not to read any attributes in this function, because | |
23959 | not all CUs needed for references have been loaded yet, and | |
23960 | symbol table processing isn't initialized. But we have to | |
23961 | set the CU language, or we won't be able to build types | |
23962 | correctly. Similarly, if we do not read the producer, we can | |
23963 | not apply producer-specific interpretation. */ | |
23964 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
23965 | |
23966 | reader.keep (); | |
c0ab21c2 TT |
23967 | } |
23968 | ||
0d305d5c | 23969 | sig_type->tu_read = 1; |
c906108c SS |
23970 | } |
23971 | ||
c906108c SS |
23972 | /* Decode simple location descriptions. |
23973 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
23974 | the location and return the value. If COMPUTED is non-null, it is |
23975 | set to true to indicate that decoding was successful, and false | |
23976 | otherwise. If COMPUTED is null, then this function may emit a | |
23977 | complaint. */ | |
c906108c SS |
23978 | |
23979 | static CORE_ADDR | |
7d79de9a | 23980 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 23981 | { |
5e22e966 | 23982 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
23983 | size_t i; |
23984 | size_t size = blk->size; | |
d521ce57 | 23985 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23986 | CORE_ADDR stack[64]; |
23987 | int stacki; | |
23988 | unsigned int bytes_read, unsnd; | |
23989 | gdb_byte op; | |
c906108c | 23990 | |
7d79de9a TT |
23991 | if (computed != nullptr) |
23992 | *computed = false; | |
23993 | ||
21ae7a4d JK |
23994 | i = 0; |
23995 | stacki = 0; | |
23996 | stack[stacki] = 0; | |
23997 | stack[++stacki] = 0; | |
23998 | ||
23999 | while (i < size) | |
24000 | { | |
24001 | op = data[i++]; | |
24002 | switch (op) | |
24003 | { | |
24004 | case DW_OP_lit0: | |
24005 | case DW_OP_lit1: | |
24006 | case DW_OP_lit2: | |
24007 | case DW_OP_lit3: | |
24008 | case DW_OP_lit4: | |
24009 | case DW_OP_lit5: | |
24010 | case DW_OP_lit6: | |
24011 | case DW_OP_lit7: | |
24012 | case DW_OP_lit8: | |
24013 | case DW_OP_lit9: | |
24014 | case DW_OP_lit10: | |
24015 | case DW_OP_lit11: | |
24016 | case DW_OP_lit12: | |
24017 | case DW_OP_lit13: | |
24018 | case DW_OP_lit14: | |
24019 | case DW_OP_lit15: | |
24020 | case DW_OP_lit16: | |
24021 | case DW_OP_lit17: | |
24022 | case DW_OP_lit18: | |
24023 | case DW_OP_lit19: | |
24024 | case DW_OP_lit20: | |
24025 | case DW_OP_lit21: | |
24026 | case DW_OP_lit22: | |
24027 | case DW_OP_lit23: | |
24028 | case DW_OP_lit24: | |
24029 | case DW_OP_lit25: | |
24030 | case DW_OP_lit26: | |
24031 | case DW_OP_lit27: | |
24032 | case DW_OP_lit28: | |
24033 | case DW_OP_lit29: | |
24034 | case DW_OP_lit30: | |
24035 | case DW_OP_lit31: | |
24036 | stack[++stacki] = op - DW_OP_lit0; | |
24037 | break; | |
f1bea926 | 24038 | |
21ae7a4d JK |
24039 | case DW_OP_reg0: |
24040 | case DW_OP_reg1: | |
24041 | case DW_OP_reg2: | |
24042 | case DW_OP_reg3: | |
24043 | case DW_OP_reg4: | |
24044 | case DW_OP_reg5: | |
24045 | case DW_OP_reg6: | |
24046 | case DW_OP_reg7: | |
24047 | case DW_OP_reg8: | |
24048 | case DW_OP_reg9: | |
24049 | case DW_OP_reg10: | |
24050 | case DW_OP_reg11: | |
24051 | case DW_OP_reg12: | |
24052 | case DW_OP_reg13: | |
24053 | case DW_OP_reg14: | |
24054 | case DW_OP_reg15: | |
24055 | case DW_OP_reg16: | |
24056 | case DW_OP_reg17: | |
24057 | case DW_OP_reg18: | |
24058 | case DW_OP_reg19: | |
24059 | case DW_OP_reg20: | |
24060 | case DW_OP_reg21: | |
24061 | case DW_OP_reg22: | |
24062 | case DW_OP_reg23: | |
24063 | case DW_OP_reg24: | |
24064 | case DW_OP_reg25: | |
24065 | case DW_OP_reg26: | |
24066 | case DW_OP_reg27: | |
24067 | case DW_OP_reg28: | |
24068 | case DW_OP_reg29: | |
24069 | case DW_OP_reg30: | |
24070 | case DW_OP_reg31: | |
24071 | stack[++stacki] = op - DW_OP_reg0; | |
24072 | if (i < size) | |
7d79de9a TT |
24073 | { |
24074 | if (computed == nullptr) | |
24075 | dwarf2_complex_location_expr_complaint (); | |
24076 | else | |
24077 | return 0; | |
24078 | } | |
21ae7a4d | 24079 | break; |
c906108c | 24080 | |
21ae7a4d JK |
24081 | case DW_OP_regx: |
24082 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24083 | i += bytes_read; | |
24084 | stack[++stacki] = unsnd; | |
24085 | if (i < size) | |
7d79de9a TT |
24086 | { |
24087 | if (computed == nullptr) | |
24088 | dwarf2_complex_location_expr_complaint (); | |
24089 | else | |
24090 | return 0; | |
24091 | } | |
21ae7a4d | 24092 | break; |
c906108c | 24093 | |
21ae7a4d | 24094 | case DW_OP_addr: |
c8a7a66f TT |
24095 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24096 | &bytes_read); | |
21ae7a4d JK |
24097 | i += bytes_read; |
24098 | break; | |
d53d4ac5 | 24099 | |
21ae7a4d JK |
24100 | case DW_OP_const1u: |
24101 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24102 | i += 1; | |
24103 | break; | |
24104 | ||
24105 | case DW_OP_const1s: | |
24106 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24107 | i += 1; | |
24108 | break; | |
24109 | ||
24110 | case DW_OP_const2u: | |
24111 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24112 | i += 2; | |
24113 | break; | |
24114 | ||
24115 | case DW_OP_const2s: | |
24116 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24117 | i += 2; | |
24118 | break; | |
d53d4ac5 | 24119 | |
21ae7a4d JK |
24120 | case DW_OP_const4u: |
24121 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24122 | i += 4; | |
24123 | break; | |
24124 | ||
24125 | case DW_OP_const4s: | |
24126 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24127 | i += 4; | |
24128 | break; | |
24129 | ||
585861ea JK |
24130 | case DW_OP_const8u: |
24131 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24132 | i += 8; | |
24133 | break; | |
24134 | ||
21ae7a4d JK |
24135 | case DW_OP_constu: |
24136 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24137 | &bytes_read); | |
24138 | i += bytes_read; | |
24139 | break; | |
24140 | ||
24141 | case DW_OP_consts: | |
24142 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24143 | i += bytes_read; | |
24144 | break; | |
24145 | ||
24146 | case DW_OP_dup: | |
24147 | stack[stacki + 1] = stack[stacki]; | |
24148 | stacki++; | |
24149 | break; | |
24150 | ||
24151 | case DW_OP_plus: | |
24152 | stack[stacki - 1] += stack[stacki]; | |
24153 | stacki--; | |
24154 | break; | |
24155 | ||
24156 | case DW_OP_plus_uconst: | |
24157 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24158 | &bytes_read); | |
24159 | i += bytes_read; | |
24160 | break; | |
24161 | ||
24162 | case DW_OP_minus: | |
24163 | stack[stacki - 1] -= stack[stacki]; | |
24164 | stacki--; | |
24165 | break; | |
24166 | ||
24167 | case DW_OP_deref: | |
24168 | /* If we're not the last op, then we definitely can't encode | |
24169 | this using GDB's address_class enum. This is valid for partial | |
24170 | global symbols, although the variable's address will be bogus | |
24171 | in the psymtab. */ | |
24172 | if (i < size) | |
7d79de9a TT |
24173 | { |
24174 | if (computed == nullptr) | |
24175 | dwarf2_complex_location_expr_complaint (); | |
24176 | else | |
24177 | return 0; | |
24178 | } | |
21ae7a4d JK |
24179 | break; |
24180 | ||
dda83cd7 | 24181 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24182 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24183 | /* The top of the stack has the offset from the beginning |
24184 | of the thread control block at which the variable is located. */ | |
24185 | /* Nothing should follow this operator, so the top of stack would | |
24186 | be returned. */ | |
24187 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24188 | address will be bogus in the psymtab. Make it always at least |
24189 | non-zero to not look as a variable garbage collected by linker | |
24190 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24191 | if (i < size) |
7d79de9a TT |
24192 | { |
24193 | if (computed == nullptr) | |
24194 | dwarf2_complex_location_expr_complaint (); | |
24195 | else | |
24196 | return 0; | |
24197 | } | |
585861ea | 24198 | stack[stacki]++; |
dda83cd7 | 24199 | break; |
21ae7a4d JK |
24200 | |
24201 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24202 | if (computed != nullptr) |
24203 | return 0; | |
21ae7a4d JK |
24204 | break; |
24205 | ||
336d760d | 24206 | case DW_OP_addrx: |
3019eac3 | 24207 | case DW_OP_GNU_addr_index: |
49f6c839 | 24208 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24209 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24210 | &bytes_read); | |
24211 | i += bytes_read; | |
24212 | break; | |
24213 | ||
21ae7a4d | 24214 | default: |
7d79de9a TT |
24215 | if (computed == nullptr) |
24216 | { | |
24217 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24218 | |
7d79de9a TT |
24219 | if (name) |
24220 | complaint (_("unsupported stack op: '%s'"), | |
24221 | name); | |
24222 | else | |
24223 | complaint (_("unsupported stack op: '%02x'"), | |
24224 | op); | |
24225 | } | |
21ae7a4d JK |
24226 | |
24227 | return (stack[stacki]); | |
d53d4ac5 | 24228 | } |
3c6e0cb3 | 24229 | |
21ae7a4d | 24230 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24231 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24232 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24233 | { | |
7d79de9a TT |
24234 | if (computed == nullptr) |
24235 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24236 | return 0; |
24237 | } | |
24238 | ||
24239 | if (stacki <= 0) | |
24240 | { | |
7d79de9a TT |
24241 | if (computed == nullptr) |
24242 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24243 | return 0; |
24244 | } | |
24245 | } | |
7d79de9a TT |
24246 | |
24247 | if (computed != nullptr) | |
24248 | *computed = true; | |
21ae7a4d | 24249 | return (stack[stacki]); |
c906108c SS |
24250 | } |
24251 | ||
24252 | /* memory allocation interface */ | |
24253 | ||
c906108c | 24254 | static struct dwarf_block * |
7b5a2f43 | 24255 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24256 | { |
8d749320 | 24257 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24258 | } |
24259 | ||
c906108c | 24260 | static struct die_info * |
b60c80d6 | 24261 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24262 | { |
24263 | struct die_info *die; | |
b60c80d6 DJ |
24264 | size_t size = sizeof (struct die_info); |
24265 | ||
24266 | if (num_attrs > 1) | |
24267 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24268 | |
b60c80d6 | 24269 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24270 | memset (die, 0, sizeof (struct die_info)); |
24271 | return (die); | |
24272 | } | |
2e276125 JB |
24273 | |
24274 | \f | |
a036ba48 | 24275 | |
c90ec28a | 24276 | /* Macro support. */ |
cf2c3c16 | 24277 | |
9eac9650 TT |
24278 | /* An overload of dwarf_decode_macros that finds the correct section |
24279 | and ensures it is read in before calling the other overload. */ | |
24280 | ||
24281 | static void | |
24282 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24283 | int section_is_gnu) | |
24284 | { | |
976ca316 SM |
24285 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24286 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24287 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24288 | unsigned int offset_size = cu->header.offset_size; |
24289 | struct dwarf2_section_info *section; | |
24290 | const char *section_name; | |
24291 | ||
24292 | if (cu->dwo_unit != nullptr) | |
24293 | { | |
24294 | if (section_is_gnu) | |
24295 | { | |
24296 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24297 | section_name = ".debug_macro.dwo"; | |
24298 | } | |
24299 | else | |
24300 | { | |
24301 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24302 | section_name = ".debug_macinfo.dwo"; | |
24303 | } | |
24304 | } | |
24305 | else | |
24306 | { | |
24307 | if (section_is_gnu) | |
24308 | { | |
976ca316 | 24309 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24310 | section_name = ".debug_macro"; |
24311 | } | |
24312 | else | |
24313 | { | |
976ca316 | 24314 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24315 | section_name = ".debug_macinfo"; |
24316 | } | |
24317 | } | |
24318 | ||
24319 | section->read (objfile); | |
24320 | if (section->buffer == nullptr) | |
24321 | { | |
24322 | complaint (_("missing %s section"), section_name); | |
24323 | return; | |
24324 | } | |
24325 | ||
24326 | buildsym_compunit *builder = cu->get_builder (); | |
24327 | ||
048fde1e | 24328 | struct dwarf2_section_info *str_offsets_section; |
24329 | struct dwarf2_section_info *str_section; | |
24330 | ULONGEST str_offsets_base; | |
24331 | ||
24332 | if (cu->dwo_unit != nullptr) | |
24333 | { | |
24334 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24335 | ->sections.str_offsets; | |
24336 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24337 | str_offsets_base = cu->header.addr_size; | |
24338 | } | |
24339 | else | |
24340 | { | |
24341 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24342 | str_section = &per_objfile->per_bfd->str; | |
24343 | str_offsets_base = *cu->str_offsets_base; | |
24344 | } | |
24345 | ||
976ca316 | 24346 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24347 | offset_size, offset, str_section, str_offsets_section, |
24348 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24349 | } |
24350 | ||
3019eac3 DE |
24351 | /* Return the .debug_loc section to use for CU. |
24352 | For DWO files use .debug_loc.dwo. */ | |
24353 | ||
24354 | static struct dwarf2_section_info * | |
24355 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24356 | { | |
976ca316 | 24357 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24358 | |
3019eac3 | 24359 | if (cu->dwo_unit) |
43988095 JK |
24360 | { |
24361 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24362 | |
43988095 JK |
24363 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24364 | } | |
976ca316 SM |
24365 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24366 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24367 | } |
24368 | ||
d0ce17d8 CT |
24369 | /* Return the .debug_rnglists section to use for CU. */ |
24370 | static struct dwarf2_section_info * | |
24371 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24372 | { | |
24373 | if (cu->header.version < 5) | |
24374 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24375 | cu->header.version); | |
24376 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24377 | ||
24378 | /* Make sure we read the .debug_rnglists section from the file that | |
24379 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24380 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24381 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24382 | program. */ | |
24383 | if (cu->dwo_unit != nullptr | |
24384 | && tag != DW_TAG_compile_unit | |
24385 | && tag != DW_TAG_skeleton_unit) | |
24386 | { | |
24387 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24388 | ||
24389 | if (sections->rnglists.size > 0) | |
24390 | return §ions->rnglists; | |
24391 | else | |
24392 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24393 | } | |
24394 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24395 | } | |
24396 | ||
8cf6f0b1 TT |
24397 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24398 | ||
24399 | static void | |
24400 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24401 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24402 | const struct attribute *attr) |
8cf6f0b1 | 24403 | { |
976ca316 | 24404 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24405 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24406 | ||
976ca316 | 24407 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24408 | |
976ca316 | 24409 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24410 | baton->per_cu = cu->per_cu; |
24411 | gdb_assert (baton->per_cu); | |
24412 | /* We don't know how long the location list is, but make sure we | |
24413 | don't run off the edge of the section. */ | |
d4df075e TT |
24414 | baton->size = section->size - attr->as_unsigned (); |
24415 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24416 | if (cu->base_address.has_value ()) |
24417 | baton->base_address = *cu->base_address; | |
24418 | else | |
24419 | baton->base_address = 0; | |
f664829e | 24420 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24421 | } |
24422 | ||
4c2df51b | 24423 | static void |
ff39bb5e | 24424 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24425 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24426 | { |
976ca316 SM |
24427 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24428 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24429 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24430 | |
cd6c91b4 | 24431 | if (attr->form_is_section_offset () |
3019eac3 | 24432 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24433 | the section. If so, fall through to the complaint in the |
24434 | other branch. */ | |
d4df075e | 24435 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24436 | { |
0d53c4c4 | 24437 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24438 | |
8d749320 | 24439 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24440 | |
8cf6f0b1 | 24441 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24442 | |
2b24b6e4 | 24443 | if (!cu->base_address.has_value ()) |
b98664d3 | 24444 | complaint (_("Location list used without " |
3e43a32a | 24445 | "specifying the CU base address.")); |
4c2df51b | 24446 | |
f1e6e072 TT |
24447 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24448 | ? dwarf2_loclist_block_index | |
24449 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24450 | SYMBOL_LOCATION_BATON (sym) = baton; |
24451 | } | |
24452 | else | |
24453 | { | |
24454 | struct dwarf2_locexpr_baton *baton; | |
24455 | ||
8d749320 | 24456 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24457 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24458 | baton->per_cu = cu->per_cu; |
24459 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24460 | |
4fc6c0d5 | 24461 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24462 | { |
24463 | /* Note that we're just copying the block's data pointer | |
24464 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24465 | info_buffer for SYM's objfile; right now we never release |
24466 | that buffer, but when we do clean up properly this may | |
24467 | need to change. */ | |
9d2246fc TT |
24468 | struct dwarf_block *block = attr->as_block (); |
24469 | baton->size = block->size; | |
24470 | baton->data = block->data; | |
0d53c4c4 DJ |
24471 | } |
24472 | else | |
24473 | { | |
24474 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24475 | sym->natural_name ()); |
0d53c4c4 | 24476 | baton->size = 0; |
0d53c4c4 | 24477 | } |
6e70227d | 24478 | |
f1e6e072 TT |
24479 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24480 | ? dwarf2_locexpr_block_index | |
24481 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24482 | SYMBOL_LOCATION_BATON (sym) = baton; |
24483 | } | |
4c2df51b | 24484 | } |
6502dd73 | 24485 | |
2e6a9f79 | 24486 | /* See read.h. */ |
96408a79 | 24487 | |
2e6a9f79 SM |
24488 | const comp_unit_head * |
24489 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24490 | { |
2e6a9f79 SM |
24491 | if (!m_header_read_in) |
24492 | { | |
24493 | const gdb_byte *info_ptr | |
24494 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24495 | |
2e6a9f79 | 24496 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24497 | |
2e6a9f79 SM |
24498 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24499 | rcuh_kind::COMPILE); | |
a9f172c6 TT |
24500 | |
24501 | m_header_read_in = true; | |
2e6a9f79 | 24502 | } |
96408a79 | 24503 | |
2e6a9f79 | 24504 | return &m_header; |
96408a79 SA |
24505 | } |
24506 | ||
09ba997f | 24507 | /* See read.h. */ |
ae0d2f24 | 24508 | |
98714339 | 24509 | int |
09ba997f | 24510 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24511 | { |
2e6a9f79 | 24512 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24513 | } |
24514 | ||
09ba997f | 24515 | /* See read.h. */ |
9eae7c52 TT |
24516 | |
24517 | int | |
09ba997f | 24518 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24519 | { |
2e6a9f79 | 24520 | return this->get_header ()->offset_size; |
96408a79 SA |
24521 | } |
24522 | ||
09ba997f | 24523 | /* See read.h. */ |
96408a79 SA |
24524 | |
24525 | int | |
09ba997f | 24526 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24527 | { |
2e6a9f79 | 24528 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24529 | |
2e6a9f79 SM |
24530 | if (header->version == 2) |
24531 | return header->addr_size; | |
96408a79 | 24532 | else |
2e6a9f79 | 24533 | return header->offset_size; |
181cebd4 JK |
24534 | } |
24535 | ||
09ba997f | 24536 | /* See read.h. */ |
9aa1f1e3 | 24537 | |
09ba997f | 24538 | struct type * |
293e7e51 | 24539 | dwarf2_cu::addr_type () const |
9a49df9d | 24540 | { |
293e7e51 | 24541 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24542 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24543 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24544 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24545 | |
24546 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24547 | return addr_type; | |
24548 | ||
c6d940a9 | 24549 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24550 | return addr_type; |
24551 | } | |
24552 | ||
22b6cd70 TT |
24553 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24554 | the index of the result, and that searches a vector. It will | |
24555 | return a result even if the offset in question does not actually | |
24556 | occur in any CU. This is separate so that it can be unit | |
24557 | tested. */ | |
ae038cb0 | 24558 | |
22b6cd70 TT |
24559 | static int |
24560 | dwarf2_find_containing_comp_unit | |
24561 | (sect_offset sect_off, | |
24562 | unsigned int offset_in_dwz, | |
0d305d5c | 24563 | const std::vector<std::unique_ptr<dwarf2_per_cu_data>> &all_comp_units) |
ae038cb0 | 24564 | { |
ae038cb0 DJ |
24565 | int low, high; |
24566 | ||
ae038cb0 | 24567 | low = 0; |
22b6cd70 | 24568 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24569 | while (high > low) |
24570 | { | |
36586728 | 24571 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24572 | int mid = low + (high - low) / 2; |
9a619af0 | 24573 | |
0d305d5c | 24574 | mid_cu = all_comp_units[mid].get (); |
36586728 | 24575 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24576 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24577 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24578 | high = mid; |
24579 | else | |
24580 | low = mid + 1; | |
24581 | } | |
24582 | gdb_assert (low == high); | |
22b6cd70 TT |
24583 | return low; |
24584 | } | |
24585 | ||
24586 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24587 | the DIE at OFFSET. Raises an error on failure. */ | |
24588 | ||
24589 | static struct dwarf2_per_cu_data * | |
24590 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24591 | unsigned int offset_in_dwz, | |
976ca316 | 24592 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24593 | { |
976ca316 SM |
24594 | int low = dwarf2_find_containing_comp_unit |
24595 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
0d305d5c TT |
24596 | dwarf2_per_cu_data *this_cu |
24597 | = per_objfile->per_bfd->all_comp_units[low].get (); | |
22b6cd70 | 24598 | |
45b8ae0c | 24599 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24600 | { |
36586728 | 24601 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24602 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24603 | "offset %s [in module %s]"), |
24604 | sect_offset_str (sect_off), | |
976ca316 | 24605 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24606 | |
976ca316 | 24607 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24608 | <= sect_off); |
0d305d5c | 24609 | return per_objfile->per_bfd->all_comp_units[low - 1].get (); |
ae038cb0 DJ |
24610 | } |
24611 | else | |
24612 | { | |
976ca316 | 24613 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24614 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24615 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24616 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24617 | return this_cu; |
24618 | } | |
24619 | } | |
24620 | ||
22b6cd70 TT |
24621 | #if GDB_SELF_TEST |
24622 | ||
24623 | namespace selftests { | |
24624 | namespace find_containing_comp_unit { | |
24625 | ||
24626 | static void | |
24627 | run_test () | |
24628 | { | |
0d305d5c TT |
24629 | std::unique_ptr<dwarf2_per_cu_data> one (new dwarf2_per_cu_data); |
24630 | dwarf2_per_cu_data *one_ptr = one.get (); | |
24631 | std::unique_ptr<dwarf2_per_cu_data> two (new dwarf2_per_cu_data); | |
24632 | dwarf2_per_cu_data *two_ptr = two.get (); | |
24633 | std::unique_ptr<dwarf2_per_cu_data> three (new dwarf2_per_cu_data); | |
24634 | dwarf2_per_cu_data *three_ptr = three.get (); | |
24635 | std::unique_ptr<dwarf2_per_cu_data> four (new dwarf2_per_cu_data); | |
24636 | dwarf2_per_cu_data *four_ptr = four.get (); | |
24637 | ||
24638 | one->length = 5; | |
24639 | two->sect_off = sect_offset (one->length); | |
24640 | two->length = 7; | |
24641 | ||
24642 | three->length = 5; | |
24643 | three->is_dwz = 1; | |
24644 | four->sect_off = sect_offset (three->length); | |
24645 | four->length = 7; | |
24646 | four->is_dwz = 1; | |
24647 | ||
24648 | std::vector<std::unique_ptr<dwarf2_per_cu_data>> units; | |
24649 | units.push_back (std::move (one)); | |
24650 | units.push_back (std::move (two)); | |
24651 | units.push_back (std::move (three)); | |
24652 | units.push_back (std::move (four)); | |
22b6cd70 TT |
24653 | |
24654 | int result; | |
24655 | ||
24656 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
0d305d5c | 24657 | SELF_CHECK (units[result].get () == one_ptr); |
22b6cd70 | 24658 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); |
0d305d5c | 24659 | SELF_CHECK (units[result].get () == one_ptr); |
22b6cd70 | 24660 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); |
0d305d5c | 24661 | SELF_CHECK (units[result].get () == two_ptr); |
22b6cd70 TT |
24662 | |
24663 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
0d305d5c | 24664 | SELF_CHECK (units[result].get () == three_ptr); |
22b6cd70 | 24665 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); |
0d305d5c | 24666 | SELF_CHECK (units[result].get () == three_ptr); |
22b6cd70 | 24667 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); |
0d305d5c | 24668 | SELF_CHECK (units[result].get () == four_ptr); |
22b6cd70 TT |
24669 | } |
24670 | ||
24671 | } | |
24672 | } | |
24673 | ||
24674 | #endif /* GDB_SELF_TEST */ | |
24675 | ||
9e021579 | 24676 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24677 | |
9e021579 SM |
24678 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24679 | dwarf2_per_objfile *per_objfile) | |
24680 | : per_cu (per_cu), | |
24681 | per_objfile (per_objfile), | |
9068261f AB |
24682 | mark (false), |
24683 | has_loclist (false), | |
24684 | checked_producer (false), | |
24685 | producer_is_gxx_lt_4_6 (false), | |
24686 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24687 | producer_is_icc (false), |
9068261f | 24688 | producer_is_icc_lt_14 (false), |
c258c396 | 24689 | producer_is_codewarrior (false), |
9068261f | 24690 | processing_has_namespace_info (false) |
93311388 | 24691 | { |
9816fde3 JK |
24692 | } |
24693 | ||
24694 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24695 | ||
24696 | static void | |
95554aad TT |
24697 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24698 | enum language pretend_language) | |
9816fde3 JK |
24699 | { |
24700 | struct attribute *attr; | |
24701 | ||
24702 | /* Set the language we're debugging. */ | |
24703 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24704 | if (attr != nullptr) |
529908cb | 24705 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 24706 | else |
9cded63f | 24707 | { |
95554aad | 24708 | cu->language = pretend_language; |
9cded63f TT |
24709 | cu->language_defn = language_def (cu->language); |
24710 | } | |
dee91e82 | 24711 | |
7d45c7c3 | 24712 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24713 | } |
24714 | ||
7188ed02 | 24715 | /* See read.h. */ |
ae038cb0 | 24716 | |
7188ed02 SM |
24717 | dwarf2_cu * |
24718 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24719 | { |
7188ed02 SM |
24720 | auto it = m_dwarf2_cus.find (per_cu); |
24721 | if (it == m_dwarf2_cus.end ()) | |
24722 | return nullptr; | |
ae038cb0 | 24723 | |
7188ed02 SM |
24724 | return it->second; |
24725 | } | |
24726 | ||
24727 | /* See read.h. */ | |
24728 | ||
24729 | void | |
24730 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24731 | { | |
24732 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24733 | ||
24734 | m_dwarf2_cus[per_cu] = cu; | |
24735 | } | |
24736 | ||
24737 | /* See read.h. */ | |
24738 | ||
24739 | void | |
24740 | dwarf2_per_objfile::age_comp_units () | |
24741 | { | |
17e593e9 SM |
24742 | dwarf_read_debug_printf_v ("running"); |
24743 | ||
08ac5771 SM |
24744 | /* This is not expected to be called in the middle of CU expansion. There is |
24745 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
24746 | loaded in memory. Calling age_comp_units while the queue is in use could | |
24747 | make us free the DIEs for a CU that is in the queue and therefore break | |
24748 | that invariant. */ | |
24749 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
24750 | ||
7188ed02 SM |
24751 | /* Start by clearing all marks. */ |
24752 | for (auto pair : m_dwarf2_cus) | |
24753 | pair.second->mark = false; | |
24754 | ||
24755 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24756 | enough. */ | |
24757 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24758 | { |
7188ed02 SM |
24759 | dwarf2_cu *cu = pair.second; |
24760 | ||
24761 | cu->last_used++; | |
24762 | if (cu->last_used <= dwarf_max_cache_age) | |
24763 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24764 | } |
24765 | ||
7188ed02 SM |
24766 | /* Delete all CUs still not marked. */ |
24767 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24768 | { |
7188ed02 | 24769 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24770 | |
7188ed02 | 24771 | if (!cu->mark) |
ae038cb0 | 24772 | { |
17e593e9 SM |
24773 | dwarf_read_debug_printf_v ("deleting old CU %s", |
24774 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
24775 | delete cu; |
24776 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24777 | } |
24778 | else | |
7188ed02 | 24779 | it++; |
ae038cb0 DJ |
24780 | } |
24781 | } | |
24782 | ||
7188ed02 | 24783 | /* See read.h. */ |
ae038cb0 | 24784 | |
7188ed02 SM |
24785 | void |
24786 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24787 | { |
7188ed02 SM |
24788 | auto it = m_dwarf2_cus.find (per_cu); |
24789 | if (it == m_dwarf2_cus.end ()) | |
24790 | return; | |
ae038cb0 | 24791 | |
7188ed02 | 24792 | delete it->second; |
ae038cb0 | 24793 | |
7188ed02 SM |
24794 | m_dwarf2_cus.erase (it); |
24795 | } | |
ae038cb0 | 24796 | |
7188ed02 SM |
24797 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24798 | { | |
24799 | remove_all_cus (); | |
ae038cb0 DJ |
24800 | } |
24801 | ||
dee91e82 DE |
24802 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24803 | We store these in a hash table separate from the DIEs, and preserve them | |
24804 | when the DIEs are flushed out of cache. | |
24805 | ||
24806 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24807 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24808 | or the type may come from a DWO file. Furthermore, while it's more logical |
24809 | to use per_cu->section+offset, with Fission the section with the data is in | |
24810 | the DWO file but we don't know that section at the point we need it. | |
24811 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24812 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24813 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24814 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24815 | |
dee91e82 | 24816 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24817 | { |
dee91e82 | 24818 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24819 | sect_offset sect_off; |
1c379e20 DJ |
24820 | struct type *type; |
24821 | }; | |
24822 | ||
dee91e82 | 24823 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24824 | |
24825 | static hashval_t | |
dee91e82 | 24826 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24827 | { |
9a3c8263 SM |
24828 | const struct dwarf2_per_cu_offset_and_type *ofs |
24829 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24830 | |
9c541725 | 24831 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24832 | } |
24833 | ||
dee91e82 | 24834 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24835 | |
24836 | static int | |
dee91e82 | 24837 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24838 | { |
9a3c8263 SM |
24839 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24840 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24841 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24842 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24843 | |
dee91e82 | 24844 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24845 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24846 | } |
24847 | ||
24848 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24849 | table if necessary. For convenience, return TYPE. |
24850 | ||
24851 | The DIEs reading must have careful ordering to: | |
85102364 | 24852 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24853 | reading current DIE. |
24854 | * Not trying to dereference contents of still incompletely read in types | |
24855 | while reading in other DIEs. | |
24856 | * Enable referencing still incompletely read in types just by a pointer to | |
24857 | the type without accessing its fields. | |
24858 | ||
24859 | Therefore caller should follow these rules: | |
24860 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24861 | before building the type and calling set_die_type. | |
e71ec853 | 24862 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24863 | possible before fetching more types to complete the current type. |
24864 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24865 | |
f792889a | 24866 | static struct type * |
57567375 TT |
24867 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
24868 | bool skip_data_location) | |
1c379e20 | 24869 | { |
976ca316 | 24870 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 24871 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 24872 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
24873 | struct attribute *attr; |
24874 | struct dynamic_prop prop; | |
1c379e20 | 24875 | |
b4ba55a1 JB |
24876 | /* For Ada types, make sure that the gnat-specific data is always |
24877 | initialized (if not already set). There are a few types where | |
24878 | we should not be doing so, because the type-specific area is | |
24879 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24880 | where the type-specific area is used to store the floatformat). | |
24881 | But this is not a problem, because the gnat-specific information | |
24882 | is actually not needed for these types. */ | |
24883 | if (need_gnat_info (cu) | |
78134374 SM |
24884 | && type->code () != TYPE_CODE_FUNC |
24885 | && type->code () != TYPE_CODE_FLT | |
24886 | && type->code () != TYPE_CODE_METHODPTR | |
24887 | && type->code () != TYPE_CODE_MEMBERPTR | |
24888 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 24889 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
24890 | && !HAVE_GNAT_AUX_INFO (type)) |
24891 | INIT_GNAT_SPECIFIC (type); | |
24892 | ||
3f2f83dd KB |
24893 | /* Read DW_AT_allocated and set in type. */ |
24894 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 24895 | if (attr != NULL) |
3f2f83dd | 24896 | { |
293e7e51 | 24897 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24898 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24899 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 24900 | } |
3f2f83dd KB |
24901 | |
24902 | /* Read DW_AT_associated and set in type. */ | |
24903 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 24904 | if (attr != NULL) |
3f2f83dd | 24905 | { |
293e7e51 | 24906 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24907 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24908 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 24909 | } |
3f2f83dd | 24910 | |
3cdcd0ce | 24911 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
24912 | if (!skip_data_location) |
24913 | { | |
24914 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
24915 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
24916 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
24917 | } | |
3cdcd0ce | 24918 | |
976ca316 SM |
24919 | if (per_objfile->die_type_hash == NULL) |
24920 | per_objfile->die_type_hash | |
0335378b TT |
24921 | = htab_up (htab_create_alloc (127, |
24922 | per_cu_offset_and_type_hash, | |
24923 | per_cu_offset_and_type_eq, | |
24924 | NULL, xcalloc, xfree)); | |
1c379e20 | 24925 | |
dee91e82 | 24926 | ofs.per_cu = cu->per_cu; |
9c541725 | 24927 | ofs.sect_off = die->sect_off; |
1c379e20 | 24928 | ofs.type = type; |
dee91e82 | 24929 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 24930 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 24931 | if (*slot) |
b98664d3 | 24932 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 24933 | sect_offset_str (die->sect_off)); |
8d749320 SM |
24934 | *slot = XOBNEW (&objfile->objfile_obstack, |
24935 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 24936 | **slot = ofs; |
f792889a | 24937 | return type; |
1c379e20 DJ |
24938 | } |
24939 | ||
9c541725 | 24940 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 24941 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
24942 | |
24943 | static struct type * | |
9c541725 | 24944 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 24945 | dwarf2_per_cu_data *per_cu, |
976ca316 | 24946 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 24947 | { |
dee91e82 | 24948 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 24949 | |
976ca316 | 24950 | if (per_objfile->die_type_hash == NULL) |
f792889a | 24951 | return NULL; |
1c379e20 | 24952 | |
dee91e82 | 24953 | ofs.per_cu = per_cu; |
9c541725 | 24954 | ofs.sect_off = sect_off; |
9a3c8263 | 24955 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 24956 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
24957 | if (slot) |
24958 | return slot->type; | |
24959 | else | |
24960 | return NULL; | |
24961 | } | |
24962 | ||
02142a6c | 24963 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
24964 | or return NULL if DIE does not have a saved type. */ |
24965 | ||
24966 | static struct type * | |
24967 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
24968 | { | |
aa66c379 | 24969 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
24970 | } |
24971 | ||
10b3939b DJ |
24972 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
24973 | ||
24974 | static void | |
24975 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
24976 | struct dwarf2_per_cu_data *ref_per_cu) | |
24977 | { | |
24978 | void **slot; | |
24979 | ||
24980 | if (cu->dependencies == NULL) | |
24981 | cu->dependencies | |
24982 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
24983 | NULL, &cu->comp_unit_obstack, | |
24984 | hashtab_obstack_allocate, | |
24985 | dummy_obstack_deallocate); | |
24986 | ||
24987 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
24988 | if (*slot == NULL) | |
24989 | *slot = ref_per_cu; | |
24990 | } | |
1c379e20 | 24991 | |
f504f079 DE |
24992 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
24993 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
24994 | cache that we must keep because we are keeping CU. |
24995 | ||
24996 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 24997 | |
10b3939b DJ |
24998 | static int |
24999 | dwarf2_mark_helper (void **slot, void *data) | |
25000 | { | |
7188ed02 SM |
25001 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25002 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25003 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25004 | |
25005 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25006 | reading of the chain. As such dependencies remain valid it is not much | |
25007 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25008 | if (cu == nullptr) |
d07ed419 JK |
25009 | return 1; |
25010 | ||
7188ed02 | 25011 | if (cu->mark) |
10b3939b | 25012 | return 1; |
10b3939b | 25013 | |
7188ed02 SM |
25014 | cu->mark = true; |
25015 | ||
25016 | if (cu->dependencies != nullptr) | |
25017 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25018 | |
25019 | return 1; | |
25020 | } | |
25021 | ||
f504f079 DE |
25022 | /* Set the mark field in CU and in every other compilation unit in the |
25023 | cache that we must keep because we are keeping CU. */ | |
25024 | ||
ae038cb0 DJ |
25025 | static void |
25026 | dwarf2_mark (struct dwarf2_cu *cu) | |
25027 | { | |
25028 | if (cu->mark) | |
25029 | return; | |
7188ed02 | 25030 | |
9068261f | 25031 | cu->mark = true; |
ae038cb0 | 25032 | |
7188ed02 SM |
25033 | if (cu->dependencies != nullptr) |
25034 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25035 | } |
25036 | ||
72bf9492 DJ |
25037 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25038 | is its offset in .debug_info for this objfile. */ | |
25039 | ||
25040 | static hashval_t | |
25041 | partial_die_hash (const void *item) | |
25042 | { | |
9a3c8263 SM |
25043 | const struct partial_die_info *part_die |
25044 | = (const struct partial_die_info *) item; | |
9a619af0 | 25045 | |
9c541725 | 25046 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25047 | } |
25048 | ||
25049 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25050 | are equal if they have the same offset. */ | |
25051 | ||
25052 | static int | |
25053 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25054 | { | |
9a3c8263 SM |
25055 | const struct partial_die_info *part_die_lhs |
25056 | = (const struct partial_die_info *) item_lhs; | |
25057 | const struct partial_die_info *part_die_rhs | |
25058 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25059 | |
9c541725 | 25060 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25061 | } |
25062 | ||
3c3bb058 AB |
25063 | struct cmd_list_element *set_dwarf_cmdlist; |
25064 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25065 | |
9291a0cd | 25066 | static void |
cd4fb1b2 SM |
25067 | show_check_physname (struct ui_file *file, int from_tty, |
25068 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25069 | { |
cd4fb1b2 SM |
25070 | fprintf_filtered (file, |
25071 | _("Whether to check \"physname\" is %s.\n"), | |
25072 | value); | |
9291a0cd TT |
25073 | } |
25074 | ||
6c265988 | 25075 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25076 | void |
6c265988 | 25077 | _initialize_dwarf2_read () |
9291a0cd | 25078 | { |
0743fc83 | 25079 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25080 | Set DWARF specific variables.\n\ |
590042fc | 25081 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25082 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25083 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25084 | |
0743fc83 | 25085 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25086 | Show DWARF specific variables.\n\ |
25087 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25088 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25089 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25090 | |
cd4fb1b2 SM |
25091 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25092 | &dwarf_max_cache_age, _("\ | |
25093 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25094 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25095 | A higher limit means that cached compilation units will be stored\n\ | |
25096 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25097 | caching, which can slow down startup."), | |
25098 | NULL, | |
25099 | show_dwarf_max_cache_age, | |
25100 | &set_dwarf_cmdlist, | |
25101 | &show_dwarf_cmdlist); | |
156942c7 | 25102 | |
cd4fb1b2 SM |
25103 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25104 | Set debugging of the DWARF reader."), _("\ | |
25105 | Show debugging of the DWARF reader."), _("\ | |
25106 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25107 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25108 | information. A value greater than 1 provides more verbose information."), | |
25109 | NULL, | |
25110 | NULL, | |
25111 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25112 | |
cd4fb1b2 SM |
25113 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25114 | Set debugging of the DWARF DIE reader."), _("\ | |
25115 | Show debugging of the DWARF DIE reader."), _("\ | |
25116 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25117 | The value is the maximum depth to print."), | |
25118 | NULL, | |
25119 | NULL, | |
25120 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25121 | |
cd4fb1b2 SM |
25122 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25123 | Set debugging of the dwarf line reader."), _("\ | |
25124 | Show debugging of the dwarf line reader."), _("\ | |
25125 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25126 | A value of 1 (one) provides basic information.\n\ | |
25127 | A value greater than 1 provides more verbose information."), | |
25128 | NULL, | |
25129 | NULL, | |
25130 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25131 | |
cd4fb1b2 SM |
25132 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25133 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25134 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25135 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25136 | the demangler."), | |
25137 | NULL, show_check_physname, | |
25138 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25139 | |
e615022a DE |
25140 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25141 | no_class, &use_deprecated_index_sections, _("\ | |
25142 | Set whether to use deprecated gdb_index sections."), _("\ | |
25143 | Show whether to use deprecated gdb_index sections."), _("\ | |
25144 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25145 | Normally they are ignored either because of a missing feature or\n\ | |
25146 | performance issue.\n\ | |
25147 | Warning: This option must be enabled before gdb reads the file."), | |
25148 | NULL, | |
25149 | NULL, | |
25150 | &setlist, &showlist); | |
25151 | ||
f1e6e072 TT |
25152 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25153 | &dwarf2_locexpr_funcs); | |
25154 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25155 | &dwarf2_loclist_funcs); | |
25156 | ||
25157 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25158 | &dwarf2_block_frame_base_locexpr_funcs); | |
25159 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25160 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25161 | |
25162 | #if GDB_SELF_TEST | |
25163 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25164 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25165 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25166 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25167 | #endif |
6502dd73 | 25168 | } |