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6e681866 | 1 | /* Ada language support routines for GDB, the GNU debugger. |
10a2c479 | 2 | |
42a4f53d | 3 | Copyright (C) 1992-2019 Free Software Foundation, Inc. |
14f9c5c9 | 4 | |
a9762ec7 | 5 | This file is part of GDB. |
14f9c5c9 | 6 | |
a9762ec7 JB |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
14f9c5c9 | 11 | |
a9762ec7 JB |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
14f9c5c9 | 16 | |
a9762ec7 JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
14f9c5c9 | 19 | |
96d887e8 | 20 | |
4c4b4cd2 | 21 | #include "defs.h" |
14f9c5c9 | 22 | #include <ctype.h> |
14f9c5c9 | 23 | #include "demangle.h" |
d55e5aa6 | 24 | #include "gdb_regex.h" |
4de283e4 TT |
25 | #include "frame.h" |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
14f9c5c9 | 28 | #include "gdbcmd.h" |
4de283e4 TT |
29 | #include "expression.h" |
30 | #include "parser-defs.h" | |
31 | #include "language.h" | |
32 | #include "varobj.h" | |
33 | #include "c-lang.h" | |
34 | #include "inferior.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "breakpoint.h" | |
14f9c5c9 | 38 | #include "gdbcore.h" |
4c4b4cd2 | 39 | #include "hashtab.h" |
4de283e4 TT |
40 | #include "gdb_obstack.h" |
41 | #include "ada-lang.h" | |
42 | #include "completer.h" | |
43 | #include <sys/stat.h> | |
44 | #include "ui-out.h" | |
45 | #include "block.h" | |
04714b91 | 46 | #include "infcall.h" |
4de283e4 TT |
47 | #include "dictionary.h" |
48 | #include "annotate.h" | |
49 | #include "valprint.h" | |
d55e5aa6 | 50 | #include "source.h" |
4de283e4 TT |
51 | #include "observable.h" |
52 | #include "common/vec.h" | |
692465f1 | 53 | #include "stack.h" |
4de283e4 | 54 | #include "common/gdb_vecs.h" |
79d43c61 | 55 | #include "typeprint.h" |
4de283e4 TT |
56 | #include "namespace.h" |
57 | ||
58 | #include "psymtab.h" | |
40bc484c | 59 | #include "value.h" |
4de283e4 TT |
60 | #include "mi/mi-common.h" |
61 | #include "arch-utils.h" | |
62 | #include "cli/cli-utils.h" | |
63 | #include "common/function-view.h" | |
64 | #include "common/byte-vector.h" | |
65 | #include <algorithm> | |
2ff0a947 | 66 | #include <map> |
ccefe4c4 | 67 | |
4c4b4cd2 | 68 | /* Define whether or not the C operator '/' truncates towards zero for |
0963b4bd | 69 | differently signed operands (truncation direction is undefined in C). |
4c4b4cd2 PH |
70 | Copied from valarith.c. */ |
71 | ||
72 | #ifndef TRUNCATION_TOWARDS_ZERO | |
73 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
74 | #endif | |
75 | ||
d2e4a39e | 76 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 85 | |
556bdfd4 | 86 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static struct value *desc_data (struct value *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int desc_arity (struct type *); |
14f9c5c9 | 103 | |
d2e4a39e | 104 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 105 | |
d2e4a39e | 106 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 107 | |
40bc484c | 108 | static struct value *make_array_descriptor (struct type *, struct value *); |
14f9c5c9 | 109 | |
4c4b4cd2 | 110 | static void ada_add_block_symbols (struct obstack *, |
b5ec771e PA |
111 | const struct block *, |
112 | const lookup_name_info &lookup_name, | |
113 | domain_enum, struct objfile *); | |
14f9c5c9 | 114 | |
22cee43f | 115 | static void ada_add_all_symbols (struct obstack *, const struct block *, |
b5ec771e PA |
116 | const lookup_name_info &lookup_name, |
117 | domain_enum, int, int *); | |
22cee43f | 118 | |
d12307c1 | 119 | static int is_nonfunction (struct block_symbol *, int); |
14f9c5c9 | 120 | |
76a01679 | 121 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
f0c5f9b2 | 122 | const struct block *); |
14f9c5c9 | 123 | |
4c4b4cd2 PH |
124 | static int num_defns_collected (struct obstack *); |
125 | ||
d12307c1 | 126 | static struct block_symbol *defns_collected (struct obstack *, int); |
14f9c5c9 | 127 | |
e9d9f57e | 128 | static struct value *resolve_subexp (expression_up *, int *, int, |
699bd4cf TT |
129 | struct type *, int, |
130 | innermost_block_tracker *); | |
14f9c5c9 | 131 | |
e9d9f57e | 132 | static void replace_operator_with_call (expression_up *, int, int, int, |
270140bd | 133 | struct symbol *, const struct block *); |
14f9c5c9 | 134 | |
d2e4a39e | 135 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 136 | |
a121b7c1 | 137 | static const char *ada_op_name (enum exp_opcode); |
4c4b4cd2 PH |
138 | |
139 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 140 | |
d2e4a39e | 141 | static int numeric_type_p (struct type *); |
14f9c5c9 | 142 | |
d2e4a39e | 143 | static int integer_type_p (struct type *); |
14f9c5c9 | 144 | |
d2e4a39e | 145 | static int scalar_type_p (struct type *); |
14f9c5c9 | 146 | |
d2e4a39e | 147 | static int discrete_type_p (struct type *); |
14f9c5c9 | 148 | |
aeb5907d JB |
149 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
150 | const char **, | |
151 | int *, | |
152 | const char **); | |
153 | ||
154 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
270140bd | 155 | const struct block *); |
aeb5907d | 156 | |
a121b7c1 | 157 | static struct type *ada_lookup_struct_elt_type (struct type *, const char *, |
988f6b3d | 158 | int, int); |
4c4b4cd2 | 159 | |
d2e4a39e | 160 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 161 | |
b4ba55a1 JB |
162 | static struct type *ada_find_parallel_type_with_name (struct type *, |
163 | const char *); | |
164 | ||
d2e4a39e | 165 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 166 | |
10a2c479 | 167 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 168 | const gdb_byte *, |
4c4b4cd2 PH |
169 | CORE_ADDR, struct value *); |
170 | ||
171 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 172 | |
28c85d6c | 173 | static struct type *to_fixed_range_type (struct type *, struct value *); |
14f9c5c9 | 174 | |
d2e4a39e | 175 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 176 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 177 | |
d2e4a39e | 178 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 179 | |
ad82864c | 180 | static struct type *constrained_packed_array_type (struct type *, long *); |
14f9c5c9 | 181 | |
ad82864c | 182 | static struct type *decode_constrained_packed_array_type (struct type *); |
14f9c5c9 | 183 | |
ad82864c JB |
184 | static long decode_packed_array_bitsize (struct type *); |
185 | ||
186 | static struct value *decode_constrained_packed_array (struct value *); | |
187 | ||
188 | static int ada_is_packed_array_type (struct type *); | |
189 | ||
190 | static int ada_is_unconstrained_packed_array_type (struct type *); | |
14f9c5c9 | 191 | |
d2e4a39e | 192 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 193 | struct value **); |
14f9c5c9 | 194 | |
4c4b4cd2 PH |
195 | static struct value *coerce_unspec_val_to_type (struct value *, |
196 | struct type *); | |
14f9c5c9 | 197 | |
d2e4a39e | 198 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 199 | |
d2e4a39e | 200 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 201 | |
d2e4a39e | 202 | static int is_name_suffix (const char *); |
14f9c5c9 | 203 | |
73589123 PH |
204 | static int advance_wild_match (const char **, const char *, int); |
205 | ||
b5ec771e | 206 | static bool wild_match (const char *name, const char *patn); |
14f9c5c9 | 207 | |
d2e4a39e | 208 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 209 | |
4c4b4cd2 PH |
210 | static LONGEST pos_atr (struct value *); |
211 | ||
3cb382c9 | 212 | static struct value *value_pos_atr (struct type *, struct value *); |
14f9c5c9 | 213 | |
d2e4a39e | 214 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 215 | |
4c4b4cd2 PH |
216 | static struct symbol *standard_lookup (const char *, const struct block *, |
217 | domain_enum); | |
14f9c5c9 | 218 | |
108d56a4 | 219 | static struct value *ada_search_struct_field (const char *, struct value *, int, |
4c4b4cd2 PH |
220 | struct type *); |
221 | ||
222 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
223 | struct type *); | |
224 | ||
0d5cff50 | 225 | static int find_struct_field (const char *, struct type *, int, |
52ce6436 | 226 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 | 227 | |
d12307c1 | 228 | static int ada_resolve_function (struct block_symbol *, int, |
4c4b4cd2 | 229 | struct value **, int, const char *, |
2a612529 | 230 | struct type *, int); |
4c4b4cd2 | 231 | |
4c4b4cd2 PH |
232 | static int ada_is_direct_array_type (struct type *); |
233 | ||
72d5681a PH |
234 | static void ada_language_arch_info (struct gdbarch *, |
235 | struct language_arch_info *); | |
714e53ab | 236 | |
52ce6436 PH |
237 | static struct value *ada_index_struct_field (int, struct value *, int, |
238 | struct type *); | |
239 | ||
240 | static struct value *assign_aggregate (struct value *, struct value *, | |
0963b4bd MS |
241 | struct expression *, |
242 | int *, enum noside); | |
52ce6436 PH |
243 | |
244 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
245 | struct expression *, | |
246 | int *, LONGEST *, int *, | |
247 | int, LONGEST, LONGEST); | |
248 | ||
249 | static void aggregate_assign_positional (struct value *, struct value *, | |
250 | struct expression *, | |
251 | int *, LONGEST *, int *, int, | |
252 | LONGEST, LONGEST); | |
253 | ||
254 | ||
255 | static void aggregate_assign_others (struct value *, struct value *, | |
256 | struct expression *, | |
257 | int *, LONGEST *, int, LONGEST, LONGEST); | |
258 | ||
259 | ||
260 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
261 | ||
262 | ||
263 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
264 | int *, enum noside); | |
265 | ||
266 | static void ada_forward_operator_length (struct expression *, int, int *, | |
267 | int *); | |
852dff6c JB |
268 | |
269 | static struct type *ada_find_any_type (const char *name); | |
b5ec771e PA |
270 | |
271 | static symbol_name_matcher_ftype *ada_get_symbol_name_matcher | |
272 | (const lookup_name_info &lookup_name); | |
273 | ||
4c4b4cd2 PH |
274 | \f |
275 | ||
ee01b665 JB |
276 | /* The result of a symbol lookup to be stored in our symbol cache. */ |
277 | ||
278 | struct cache_entry | |
279 | { | |
280 | /* The name used to perform the lookup. */ | |
281 | const char *name; | |
282 | /* The namespace used during the lookup. */ | |
fe978cb0 | 283 | domain_enum domain; |
ee01b665 JB |
284 | /* The symbol returned by the lookup, or NULL if no matching symbol |
285 | was found. */ | |
286 | struct symbol *sym; | |
287 | /* The block where the symbol was found, or NULL if no matching | |
288 | symbol was found. */ | |
289 | const struct block *block; | |
290 | /* A pointer to the next entry with the same hash. */ | |
291 | struct cache_entry *next; | |
292 | }; | |
293 | ||
294 | /* The Ada symbol cache, used to store the result of Ada-mode symbol | |
295 | lookups in the course of executing the user's commands. | |
296 | ||
297 | The cache is implemented using a simple, fixed-sized hash. | |
298 | The size is fixed on the grounds that there are not likely to be | |
299 | all that many symbols looked up during any given session, regardless | |
300 | of the size of the symbol table. If we decide to go to a resizable | |
301 | table, let's just use the stuff from libiberty instead. */ | |
302 | ||
303 | #define HASH_SIZE 1009 | |
304 | ||
305 | struct ada_symbol_cache | |
306 | { | |
307 | /* An obstack used to store the entries in our cache. */ | |
308 | struct obstack cache_space; | |
309 | ||
310 | /* The root of the hash table used to implement our symbol cache. */ | |
311 | struct cache_entry *root[HASH_SIZE]; | |
312 | }; | |
313 | ||
314 | static void ada_free_symbol_cache (struct ada_symbol_cache *sym_cache); | |
76a01679 | 315 | |
4c4b4cd2 | 316 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
317 | static unsigned int varsize_limit; |
318 | ||
67cb5b2d | 319 | static const char ada_completer_word_break_characters[] = |
4c4b4cd2 PH |
320 | #ifdef VMS |
321 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
322 | #else | |
14f9c5c9 | 323 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 324 | #endif |
14f9c5c9 | 325 | |
4c4b4cd2 | 326 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 327 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 328 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 329 | |
4c4b4cd2 PH |
330 | /* Limit on the number of warnings to raise per expression evaluation. */ |
331 | static int warning_limit = 2; | |
332 | ||
333 | /* Number of warning messages issued; reset to 0 by cleanups after | |
334 | expression evaluation. */ | |
335 | static int warnings_issued = 0; | |
336 | ||
337 | static const char *known_runtime_file_name_patterns[] = { | |
338 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
339 | }; | |
340 | ||
341 | static const char *known_auxiliary_function_name_patterns[] = { | |
342 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
343 | }; | |
344 | ||
c6044dd1 JB |
345 | /* Maintenance-related settings for this module. */ |
346 | ||
347 | static struct cmd_list_element *maint_set_ada_cmdlist; | |
348 | static struct cmd_list_element *maint_show_ada_cmdlist; | |
349 | ||
350 | /* Implement the "maintenance set ada" (prefix) command. */ | |
351 | ||
352 | static void | |
981a3fb3 | 353 | maint_set_ada_cmd (const char *args, int from_tty) |
c6044dd1 | 354 | { |
635c7e8a TT |
355 | help_list (maint_set_ada_cmdlist, "maintenance set ada ", all_commands, |
356 | gdb_stdout); | |
c6044dd1 JB |
357 | } |
358 | ||
359 | /* Implement the "maintenance show ada" (prefix) command. */ | |
360 | ||
361 | static void | |
981a3fb3 | 362 | maint_show_ada_cmd (const char *args, int from_tty) |
c6044dd1 JB |
363 | { |
364 | cmd_show_list (maint_show_ada_cmdlist, from_tty, ""); | |
365 | } | |
366 | ||
367 | /* The "maintenance ada set/show ignore-descriptive-type" value. */ | |
368 | ||
369 | static int ada_ignore_descriptive_types_p = 0; | |
370 | ||
e802dbe0 JB |
371 | /* Inferior-specific data. */ |
372 | ||
373 | /* Per-inferior data for this module. */ | |
374 | ||
375 | struct ada_inferior_data | |
376 | { | |
377 | /* The ada__tags__type_specific_data type, which is used when decoding | |
378 | tagged types. With older versions of GNAT, this type was directly | |
379 | accessible through a component ("tsd") in the object tag. But this | |
380 | is no longer the case, so we cache it for each inferior. */ | |
f37b313d | 381 | struct type *tsd_type = nullptr; |
3eecfa55 JB |
382 | |
383 | /* The exception_support_info data. This data is used to determine | |
384 | how to implement support for Ada exception catchpoints in a given | |
385 | inferior. */ | |
f37b313d | 386 | const struct exception_support_info *exception_info = nullptr; |
e802dbe0 JB |
387 | }; |
388 | ||
389 | /* Our key to this module's inferior data. */ | |
f37b313d | 390 | static const struct inferior_key<ada_inferior_data> ada_inferior_data; |
e802dbe0 JB |
391 | |
392 | /* Return our inferior data for the given inferior (INF). | |
393 | ||
394 | This function always returns a valid pointer to an allocated | |
395 | ada_inferior_data structure. If INF's inferior data has not | |
396 | been previously set, this functions creates a new one with all | |
397 | fields set to zero, sets INF's inferior to it, and then returns | |
398 | a pointer to that newly allocated ada_inferior_data. */ | |
399 | ||
400 | static struct ada_inferior_data * | |
401 | get_ada_inferior_data (struct inferior *inf) | |
402 | { | |
403 | struct ada_inferior_data *data; | |
404 | ||
f37b313d | 405 | data = ada_inferior_data.get (inf); |
e802dbe0 | 406 | if (data == NULL) |
f37b313d | 407 | data = ada_inferior_data.emplace (inf); |
e802dbe0 JB |
408 | |
409 | return data; | |
410 | } | |
411 | ||
412 | /* Perform all necessary cleanups regarding our module's inferior data | |
413 | that is required after the inferior INF just exited. */ | |
414 | ||
415 | static void | |
416 | ada_inferior_exit (struct inferior *inf) | |
417 | { | |
f37b313d | 418 | ada_inferior_data.clear (inf); |
e802dbe0 JB |
419 | } |
420 | ||
ee01b665 JB |
421 | |
422 | /* program-space-specific data. */ | |
423 | ||
424 | /* This module's per-program-space data. */ | |
425 | struct ada_pspace_data | |
426 | { | |
f37b313d TT |
427 | ~ada_pspace_data () |
428 | { | |
429 | if (sym_cache != NULL) | |
430 | ada_free_symbol_cache (sym_cache); | |
431 | } | |
432 | ||
ee01b665 | 433 | /* The Ada symbol cache. */ |
f37b313d | 434 | struct ada_symbol_cache *sym_cache = nullptr; |
ee01b665 JB |
435 | }; |
436 | ||
437 | /* Key to our per-program-space data. */ | |
f37b313d | 438 | static const struct program_space_key<ada_pspace_data> ada_pspace_data_handle; |
ee01b665 JB |
439 | |
440 | /* Return this module's data for the given program space (PSPACE). | |
441 | If not is found, add a zero'ed one now. | |
442 | ||
443 | This function always returns a valid object. */ | |
444 | ||
445 | static struct ada_pspace_data * | |
446 | get_ada_pspace_data (struct program_space *pspace) | |
447 | { | |
448 | struct ada_pspace_data *data; | |
449 | ||
f37b313d | 450 | data = ada_pspace_data_handle.get (pspace); |
ee01b665 | 451 | if (data == NULL) |
f37b313d | 452 | data = ada_pspace_data_handle.emplace (pspace); |
ee01b665 JB |
453 | |
454 | return data; | |
455 | } | |
456 | ||
4c4b4cd2 PH |
457 | /* Utilities */ |
458 | ||
720d1a40 | 459 | /* If TYPE is a TYPE_CODE_TYPEDEF type, return the target type after |
eed9788b | 460 | all typedef layers have been peeled. Otherwise, return TYPE. |
720d1a40 JB |
461 | |
462 | Normally, we really expect a typedef type to only have 1 typedef layer. | |
463 | In other words, we really expect the target type of a typedef type to be | |
464 | a non-typedef type. This is particularly true for Ada units, because | |
465 | the language does not have a typedef vs not-typedef distinction. | |
466 | In that respect, the Ada compiler has been trying to eliminate as many | |
467 | typedef definitions in the debugging information, since they generally | |
468 | do not bring any extra information (we still use typedef under certain | |
469 | circumstances related mostly to the GNAT encoding). | |
470 | ||
471 | Unfortunately, we have seen situations where the debugging information | |
472 | generated by the compiler leads to such multiple typedef layers. For | |
473 | instance, consider the following example with stabs: | |
474 | ||
475 | .stabs "pck__float_array___XUP:Tt(0,46)=s16P_ARRAY:(0,47)=[...]"[...] | |
476 | .stabs "pck__float_array___XUP:t(0,36)=(0,46)",128,0,6,0 | |
477 | ||
478 | This is an error in the debugging information which causes type | |
479 | pck__float_array___XUP to be defined twice, and the second time, | |
480 | it is defined as a typedef of a typedef. | |
481 | ||
482 | This is on the fringe of legality as far as debugging information is | |
483 | concerned, and certainly unexpected. But it is easy to handle these | |
484 | situations correctly, so we can afford to be lenient in this case. */ | |
485 | ||
486 | static struct type * | |
487 | ada_typedef_target_type (struct type *type) | |
488 | { | |
489 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
490 | type = TYPE_TARGET_TYPE (type); | |
491 | return type; | |
492 | } | |
493 | ||
41d27058 JB |
494 | /* Given DECODED_NAME a string holding a symbol name in its |
495 | decoded form (ie using the Ada dotted notation), returns | |
496 | its unqualified name. */ | |
497 | ||
498 | static const char * | |
499 | ada_unqualified_name (const char *decoded_name) | |
500 | { | |
2b0f535a JB |
501 | const char *result; |
502 | ||
503 | /* If the decoded name starts with '<', it means that the encoded | |
504 | name does not follow standard naming conventions, and thus that | |
505 | it is not your typical Ada symbol name. Trying to unqualify it | |
506 | is therefore pointless and possibly erroneous. */ | |
507 | if (decoded_name[0] == '<') | |
508 | return decoded_name; | |
509 | ||
510 | result = strrchr (decoded_name, '.'); | |
41d27058 JB |
511 | if (result != NULL) |
512 | result++; /* Skip the dot... */ | |
513 | else | |
514 | result = decoded_name; | |
515 | ||
516 | return result; | |
517 | } | |
518 | ||
39e7af3e | 519 | /* Return a string starting with '<', followed by STR, and '>'. */ |
41d27058 | 520 | |
39e7af3e | 521 | static std::string |
41d27058 JB |
522 | add_angle_brackets (const char *str) |
523 | { | |
39e7af3e | 524 | return string_printf ("<%s>", str); |
41d27058 | 525 | } |
96d887e8 | 526 | |
67cb5b2d | 527 | static const char * |
4c4b4cd2 PH |
528 | ada_get_gdb_completer_word_break_characters (void) |
529 | { | |
530 | return ada_completer_word_break_characters; | |
531 | } | |
532 | ||
e79af960 JB |
533 | /* Print an array element index using the Ada syntax. */ |
534 | ||
535 | static void | |
536 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
79a45b7d | 537 | const struct value_print_options *options) |
e79af960 | 538 | { |
79a45b7d | 539 | LA_VALUE_PRINT (index_value, stream, options); |
e79af960 JB |
540 | fprintf_filtered (stream, " => "); |
541 | } | |
542 | ||
e2b7af72 JB |
543 | /* la_watch_location_expression for Ada. */ |
544 | ||
545 | gdb::unique_xmalloc_ptr<char> | |
546 | ada_watch_location_expression (struct type *type, CORE_ADDR addr) | |
547 | { | |
548 | type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); | |
549 | std::string name = type_to_string (type); | |
550 | return gdb::unique_xmalloc_ptr<char> | |
551 | (xstrprintf ("{%s} %s", name.c_str (), core_addr_to_string (addr))); | |
552 | } | |
553 | ||
f27cf670 | 554 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 555 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 556 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 557 | |
f27cf670 AS |
558 | void * |
559 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 560 | { |
d2e4a39e AS |
561 | if (*size < min_size) |
562 | { | |
563 | *size *= 2; | |
564 | if (*size < min_size) | |
4c4b4cd2 | 565 | *size = min_size; |
f27cf670 | 566 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 567 | } |
f27cf670 | 568 | return vect; |
14f9c5c9 AS |
569 | } |
570 | ||
571 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 572 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
573 | |
574 | static int | |
ebf56fd3 | 575 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
576 | { |
577 | int len = strlen (target); | |
5b4ee69b | 578 | |
d2e4a39e | 579 | return |
4c4b4cd2 PH |
580 | (strncmp (field_name, target, len) == 0 |
581 | && (field_name[len] == '\0' | |
61012eef | 582 | || (startswith (field_name + len, "___") |
76a01679 JB |
583 | && strcmp (field_name + strlen (field_name) - 6, |
584 | "___XVN") != 0))); | |
14f9c5c9 AS |
585 | } |
586 | ||
587 | ||
872c8b51 JB |
588 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
589 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
590 | and return its index. This function also handles fields whose name | |
591 | have ___ suffixes because the compiler sometimes alters their name | |
592 | by adding such a suffix to represent fields with certain constraints. | |
593 | If the field could not be found, return a negative number if | |
594 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
595 | |
596 | int | |
597 | ada_get_field_index (const struct type *type, const char *field_name, | |
598 | int maybe_missing) | |
599 | { | |
600 | int fieldno; | |
872c8b51 JB |
601 | struct type *struct_type = check_typedef ((struct type *) type); |
602 | ||
603 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); fieldno++) | |
604 | if (field_name_match (TYPE_FIELD_NAME (struct_type, fieldno), field_name)) | |
4c4b4cd2 PH |
605 | return fieldno; |
606 | ||
607 | if (!maybe_missing) | |
323e0a4a | 608 | error (_("Unable to find field %s in struct %s. Aborting"), |
872c8b51 | 609 | field_name, TYPE_NAME (struct_type)); |
4c4b4cd2 PH |
610 | |
611 | return -1; | |
612 | } | |
613 | ||
614 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
615 | |
616 | int | |
d2e4a39e | 617 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
618 | { |
619 | if (name == NULL) | |
620 | return 0; | |
d2e4a39e | 621 | else |
14f9c5c9 | 622 | { |
d2e4a39e | 623 | const char *p = strstr (name, "___"); |
5b4ee69b | 624 | |
14f9c5c9 | 625 | if (p == NULL) |
4c4b4cd2 | 626 | return strlen (name); |
14f9c5c9 | 627 | else |
4c4b4cd2 | 628 | return p - name; |
14f9c5c9 AS |
629 | } |
630 | } | |
631 | ||
4c4b4cd2 PH |
632 | /* Return non-zero if SUFFIX is a suffix of STR. |
633 | Return zero if STR is null. */ | |
634 | ||
14f9c5c9 | 635 | static int |
d2e4a39e | 636 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
637 | { |
638 | int len1, len2; | |
5b4ee69b | 639 | |
14f9c5c9 AS |
640 | if (str == NULL) |
641 | return 0; | |
642 | len1 = strlen (str); | |
643 | len2 = strlen (suffix); | |
4c4b4cd2 | 644 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
645 | } |
646 | ||
4c4b4cd2 PH |
647 | /* The contents of value VAL, treated as a value of type TYPE. The |
648 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 649 | |
d2e4a39e | 650 | static struct value * |
4c4b4cd2 | 651 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 652 | { |
61ee279c | 653 | type = ada_check_typedef (type); |
df407dfe | 654 | if (value_type (val) == type) |
4c4b4cd2 | 655 | return val; |
d2e4a39e | 656 | else |
14f9c5c9 | 657 | { |
4c4b4cd2 PH |
658 | struct value *result; |
659 | ||
660 | /* Make sure that the object size is not unreasonable before | |
661 | trying to allocate some memory for it. */ | |
c1b5a1a6 | 662 | ada_ensure_varsize_limit (type); |
4c4b4cd2 | 663 | |
41e8491f JK |
664 | if (value_lazy (val) |
665 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) | |
666 | result = allocate_value_lazy (type); | |
667 | else | |
668 | { | |
669 | result = allocate_value (type); | |
9a0dc9e3 | 670 | value_contents_copy_raw (result, 0, val, 0, TYPE_LENGTH (type)); |
41e8491f | 671 | } |
74bcbdf3 | 672 | set_value_component_location (result, val); |
9bbda503 AC |
673 | set_value_bitsize (result, value_bitsize (val)); |
674 | set_value_bitpos (result, value_bitpos (val)); | |
c408a94f TT |
675 | if (VALUE_LVAL (result) == lval_memory) |
676 | set_value_address (result, value_address (val)); | |
14f9c5c9 AS |
677 | return result; |
678 | } | |
679 | } | |
680 | ||
fc1a4b47 AC |
681 | static const gdb_byte * |
682 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
683 | { |
684 | if (valaddr == NULL) | |
685 | return NULL; | |
686 | else | |
687 | return valaddr + offset; | |
688 | } | |
689 | ||
690 | static CORE_ADDR | |
ebf56fd3 | 691 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
692 | { |
693 | if (address == 0) | |
694 | return 0; | |
d2e4a39e | 695 | else |
14f9c5c9 AS |
696 | return address + offset; |
697 | } | |
698 | ||
4c4b4cd2 PH |
699 | /* Issue a warning (as for the definition of warning in utils.c, but |
700 | with exactly one argument rather than ...), unless the limit on the | |
701 | number of warnings has passed during the evaluation of the current | |
702 | expression. */ | |
a2249542 | 703 | |
77109804 AC |
704 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
705 | provided by "complaint". */ | |
a0b31db1 | 706 | static void lim_warning (const char *format, ...) ATTRIBUTE_PRINTF (1, 2); |
77109804 | 707 | |
14f9c5c9 | 708 | static void |
a2249542 | 709 | lim_warning (const char *format, ...) |
14f9c5c9 | 710 | { |
a2249542 | 711 | va_list args; |
a2249542 | 712 | |
5b4ee69b | 713 | va_start (args, format); |
4c4b4cd2 PH |
714 | warnings_issued += 1; |
715 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
716 | vwarning (format, args); |
717 | ||
718 | va_end (args); | |
4c4b4cd2 PH |
719 | } |
720 | ||
714e53ab PH |
721 | /* Issue an error if the size of an object of type T is unreasonable, |
722 | i.e. if it would be a bad idea to allocate a value of this type in | |
723 | GDB. */ | |
724 | ||
c1b5a1a6 JB |
725 | void |
726 | ada_ensure_varsize_limit (const struct type *type) | |
714e53ab PH |
727 | { |
728 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 729 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
730 | } |
731 | ||
0963b4bd | 732 | /* Maximum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 733 | static LONGEST |
c3e5cd34 | 734 | max_of_size (int size) |
4c4b4cd2 | 735 | { |
76a01679 | 736 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
5b4ee69b | 737 | |
76a01679 | 738 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
739 | } |
740 | ||
0963b4bd | 741 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 742 | static LONGEST |
c3e5cd34 | 743 | min_of_size (int size) |
4c4b4cd2 | 744 | { |
c3e5cd34 | 745 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
746 | } |
747 | ||
0963b4bd | 748 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 749 | static ULONGEST |
c3e5cd34 | 750 | umax_of_size (int size) |
4c4b4cd2 | 751 | { |
76a01679 | 752 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
5b4ee69b | 753 | |
76a01679 | 754 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
755 | } |
756 | ||
0963b4bd | 757 | /* Maximum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
758 | static LONGEST |
759 | max_of_type (struct type *t) | |
4c4b4cd2 | 760 | { |
c3e5cd34 PH |
761 | if (TYPE_UNSIGNED (t)) |
762 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
763 | else | |
764 | return max_of_size (TYPE_LENGTH (t)); | |
765 | } | |
766 | ||
0963b4bd | 767 | /* Minimum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
768 | static LONGEST |
769 | min_of_type (struct type *t) | |
770 | { | |
771 | if (TYPE_UNSIGNED (t)) | |
772 | return 0; | |
773 | else | |
774 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
775 | } |
776 | ||
777 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
43bbcdc2 PH |
778 | LONGEST |
779 | ada_discrete_type_high_bound (struct type *type) | |
4c4b4cd2 | 780 | { |
c3345124 | 781 | type = resolve_dynamic_type (type, NULL, 0); |
76a01679 | 782 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
783 | { |
784 | case TYPE_CODE_RANGE: | |
690cc4eb | 785 | return TYPE_HIGH_BOUND (type); |
4c4b4cd2 | 786 | case TYPE_CODE_ENUM: |
14e75d8e | 787 | return TYPE_FIELD_ENUMVAL (type, TYPE_NFIELDS (type) - 1); |
690cc4eb PH |
788 | case TYPE_CODE_BOOL: |
789 | return 1; | |
790 | case TYPE_CODE_CHAR: | |
76a01679 | 791 | case TYPE_CODE_INT: |
690cc4eb | 792 | return max_of_type (type); |
4c4b4cd2 | 793 | default: |
43bbcdc2 | 794 | error (_("Unexpected type in ada_discrete_type_high_bound.")); |
4c4b4cd2 PH |
795 | } |
796 | } | |
797 | ||
14e75d8e | 798 | /* The smallest value in the domain of TYPE, a discrete type, as an integer. */ |
43bbcdc2 PH |
799 | LONGEST |
800 | ada_discrete_type_low_bound (struct type *type) | |
4c4b4cd2 | 801 | { |
c3345124 | 802 | type = resolve_dynamic_type (type, NULL, 0); |
76a01679 | 803 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
804 | { |
805 | case TYPE_CODE_RANGE: | |
690cc4eb | 806 | return TYPE_LOW_BOUND (type); |
4c4b4cd2 | 807 | case TYPE_CODE_ENUM: |
14e75d8e | 808 | return TYPE_FIELD_ENUMVAL (type, 0); |
690cc4eb PH |
809 | case TYPE_CODE_BOOL: |
810 | return 0; | |
811 | case TYPE_CODE_CHAR: | |
76a01679 | 812 | case TYPE_CODE_INT: |
690cc4eb | 813 | return min_of_type (type); |
4c4b4cd2 | 814 | default: |
43bbcdc2 | 815 | error (_("Unexpected type in ada_discrete_type_low_bound.")); |
4c4b4cd2 PH |
816 | } |
817 | } | |
818 | ||
819 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 820 | non-range scalar type. */ |
4c4b4cd2 PH |
821 | |
822 | static struct type * | |
18af8284 | 823 | get_base_type (struct type *type) |
4c4b4cd2 PH |
824 | { |
825 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
826 | { | |
76a01679 JB |
827 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
828 | return type; | |
4c4b4cd2 PH |
829 | type = TYPE_TARGET_TYPE (type); |
830 | } | |
831 | return type; | |
14f9c5c9 | 832 | } |
41246937 JB |
833 | |
834 | /* Return a decoded version of the given VALUE. This means returning | |
835 | a value whose type is obtained by applying all the GNAT-specific | |
836 | encondings, making the resulting type a static but standard description | |
837 | of the initial type. */ | |
838 | ||
839 | struct value * | |
840 | ada_get_decoded_value (struct value *value) | |
841 | { | |
842 | struct type *type = ada_check_typedef (value_type (value)); | |
843 | ||
844 | if (ada_is_array_descriptor_type (type) | |
845 | || (ada_is_constrained_packed_array_type (type) | |
846 | && TYPE_CODE (type) != TYPE_CODE_PTR)) | |
847 | { | |
848 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */ | |
849 | value = ada_coerce_to_simple_array_ptr (value); | |
850 | else | |
851 | value = ada_coerce_to_simple_array (value); | |
852 | } | |
853 | else | |
854 | value = ada_to_fixed_value (value); | |
855 | ||
856 | return value; | |
857 | } | |
858 | ||
859 | /* Same as ada_get_decoded_value, but with the given TYPE. | |
860 | Because there is no associated actual value for this type, | |
861 | the resulting type might be a best-effort approximation in | |
862 | the case of dynamic types. */ | |
863 | ||
864 | struct type * | |
865 | ada_get_decoded_type (struct type *type) | |
866 | { | |
867 | type = to_static_fixed_type (type); | |
868 | if (ada_is_constrained_packed_array_type (type)) | |
869 | type = ada_coerce_to_simple_array_type (type); | |
870 | return type; | |
871 | } | |
872 | ||
4c4b4cd2 | 873 | \f |
76a01679 | 874 | |
4c4b4cd2 | 875 | /* Language Selection */ |
14f9c5c9 AS |
876 | |
877 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
ccefe4c4 | 878 | (the main program is in Ada iif the adainit symbol is found). */ |
d2e4a39e | 879 | |
14f9c5c9 | 880 | enum language |
ccefe4c4 | 881 | ada_update_initial_language (enum language lang) |
14f9c5c9 | 882 | { |
d2e4a39e | 883 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
3b7344d5 | 884 | (struct objfile *) NULL).minsym != NULL) |
4c4b4cd2 | 885 | return language_ada; |
14f9c5c9 AS |
886 | |
887 | return lang; | |
888 | } | |
96d887e8 PH |
889 | |
890 | /* If the main procedure is written in Ada, then return its name. | |
891 | The result is good until the next call. Return NULL if the main | |
892 | procedure doesn't appear to be in Ada. */ | |
893 | ||
894 | char * | |
895 | ada_main_name (void) | |
896 | { | |
3b7344d5 | 897 | struct bound_minimal_symbol msym; |
e83e4e24 | 898 | static gdb::unique_xmalloc_ptr<char> main_program_name; |
6c038f32 | 899 | |
96d887e8 PH |
900 | /* For Ada, the name of the main procedure is stored in a specific |
901 | string constant, generated by the binder. Look for that symbol, | |
902 | extract its address, and then read that string. If we didn't find | |
903 | that string, then most probably the main procedure is not written | |
904 | in Ada. */ | |
905 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
906 | ||
3b7344d5 | 907 | if (msym.minsym != NULL) |
96d887e8 | 908 | { |
f9bc20b9 JB |
909 | CORE_ADDR main_program_name_addr; |
910 | int err_code; | |
911 | ||
77e371c0 | 912 | main_program_name_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
96d887e8 | 913 | if (main_program_name_addr == 0) |
323e0a4a | 914 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 915 | |
f9bc20b9 JB |
916 | target_read_string (main_program_name_addr, &main_program_name, |
917 | 1024, &err_code); | |
918 | ||
919 | if (err_code != 0) | |
920 | return NULL; | |
e83e4e24 | 921 | return main_program_name.get (); |
96d887e8 PH |
922 | } |
923 | ||
924 | /* The main procedure doesn't seem to be in Ada. */ | |
925 | return NULL; | |
926 | } | |
14f9c5c9 | 927 | \f |
4c4b4cd2 | 928 | /* Symbols */ |
d2e4a39e | 929 | |
4c4b4cd2 PH |
930 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
931 | of NULLs. */ | |
14f9c5c9 | 932 | |
d2e4a39e AS |
933 | const struct ada_opname_map ada_opname_table[] = { |
934 | {"Oadd", "\"+\"", BINOP_ADD}, | |
935 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
936 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
937 | {"Odivide", "\"/\"", BINOP_DIV}, | |
938 | {"Omod", "\"mod\"", BINOP_MOD}, | |
939 | {"Orem", "\"rem\"", BINOP_REM}, | |
940 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
941 | {"Olt", "\"<\"", BINOP_LESS}, | |
942 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
943 | {"Ogt", "\">\"", BINOP_GTR}, | |
944 | {"Oge", "\">=\"", BINOP_GEQ}, | |
945 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
946 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
947 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
948 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
949 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
950 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
951 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
952 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
953 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
954 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
955 | {NULL, NULL} | |
14f9c5c9 AS |
956 | }; |
957 | ||
b5ec771e PA |
958 | /* The "encoded" form of DECODED, according to GNAT conventions. The |
959 | result is valid until the next call to ada_encode. If | |
960 | THROW_ERRORS, throw an error if invalid operator name is found. | |
961 | Otherwise, return NULL in that case. */ | |
4c4b4cd2 | 962 | |
b5ec771e PA |
963 | static char * |
964 | ada_encode_1 (const char *decoded, bool throw_errors) | |
14f9c5c9 | 965 | { |
4c4b4cd2 PH |
966 | static char *encoding_buffer = NULL; |
967 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 968 | const char *p; |
14f9c5c9 | 969 | int k; |
d2e4a39e | 970 | |
4c4b4cd2 | 971 | if (decoded == NULL) |
14f9c5c9 AS |
972 | return NULL; |
973 | ||
4c4b4cd2 PH |
974 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
975 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
976 | |
977 | k = 0; | |
4c4b4cd2 | 978 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 979 | { |
cdc7bb92 | 980 | if (*p == '.') |
4c4b4cd2 PH |
981 | { |
982 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
983 | k += 2; | |
984 | } | |
14f9c5c9 | 985 | else if (*p == '"') |
4c4b4cd2 PH |
986 | { |
987 | const struct ada_opname_map *mapping; | |
988 | ||
989 | for (mapping = ada_opname_table; | |
1265e4aa | 990 | mapping->encoded != NULL |
61012eef | 991 | && !startswith (p, mapping->decoded); mapping += 1) |
4c4b4cd2 PH |
992 | ; |
993 | if (mapping->encoded == NULL) | |
b5ec771e PA |
994 | { |
995 | if (throw_errors) | |
996 | error (_("invalid Ada operator name: %s"), p); | |
997 | else | |
998 | return NULL; | |
999 | } | |
4c4b4cd2 PH |
1000 | strcpy (encoding_buffer + k, mapping->encoded); |
1001 | k += strlen (mapping->encoded); | |
1002 | break; | |
1003 | } | |
d2e4a39e | 1004 | else |
4c4b4cd2 PH |
1005 | { |
1006 | encoding_buffer[k] = *p; | |
1007 | k += 1; | |
1008 | } | |
14f9c5c9 AS |
1009 | } |
1010 | ||
4c4b4cd2 PH |
1011 | encoding_buffer[k] = '\0'; |
1012 | return encoding_buffer; | |
14f9c5c9 AS |
1013 | } |
1014 | ||
b5ec771e PA |
1015 | /* The "encoded" form of DECODED, according to GNAT conventions. |
1016 | The result is valid until the next call to ada_encode. */ | |
1017 | ||
1018 | char * | |
1019 | ada_encode (const char *decoded) | |
1020 | { | |
1021 | return ada_encode_1 (decoded, true); | |
1022 | } | |
1023 | ||
14f9c5c9 | 1024 | /* Return NAME folded to lower case, or, if surrounded by single |
4c4b4cd2 PH |
1025 | quotes, unfolded, but with the quotes stripped away. Result good |
1026 | to next call. */ | |
1027 | ||
d2e4a39e AS |
1028 | char * |
1029 | ada_fold_name (const char *name) | |
14f9c5c9 | 1030 | { |
d2e4a39e | 1031 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
1032 | static size_t fold_buffer_size = 0; |
1033 | ||
1034 | int len = strlen (name); | |
d2e4a39e | 1035 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
1036 | |
1037 | if (name[0] == '\'') | |
1038 | { | |
d2e4a39e AS |
1039 | strncpy (fold_buffer, name + 1, len - 2); |
1040 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
1041 | } |
1042 | else | |
1043 | { | |
1044 | int i; | |
5b4ee69b | 1045 | |
14f9c5c9 | 1046 | for (i = 0; i <= len; i += 1) |
4c4b4cd2 | 1047 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
1048 | } |
1049 | ||
1050 | return fold_buffer; | |
1051 | } | |
1052 | ||
529cad9c PH |
1053 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
1054 | ||
1055 | static int | |
1056 | is_lower_alphanum (const char c) | |
1057 | { | |
1058 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
1059 | } | |
1060 | ||
c90092fe JB |
1061 | /* ENCODED is the linkage name of a symbol and LEN contains its length. |
1062 | This function saves in LEN the length of that same symbol name but | |
1063 | without either of these suffixes: | |
29480c32 JB |
1064 | . .{DIGIT}+ |
1065 | . ${DIGIT}+ | |
1066 | . ___{DIGIT}+ | |
1067 | . __{DIGIT}+. | |
c90092fe | 1068 | |
29480c32 JB |
1069 | These are suffixes introduced by the compiler for entities such as |
1070 | nested subprogram for instance, in order to avoid name clashes. | |
1071 | They do not serve any purpose for the debugger. */ | |
1072 | ||
1073 | static void | |
1074 | ada_remove_trailing_digits (const char *encoded, int *len) | |
1075 | { | |
1076 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
1077 | { | |
1078 | int i = *len - 2; | |
5b4ee69b | 1079 | |
29480c32 JB |
1080 | while (i > 0 && isdigit (encoded[i])) |
1081 | i--; | |
1082 | if (i >= 0 && encoded[i] == '.') | |
1083 | *len = i; | |
1084 | else if (i >= 0 && encoded[i] == '$') | |
1085 | *len = i; | |
61012eef | 1086 | else if (i >= 2 && startswith (encoded + i - 2, "___")) |
29480c32 | 1087 | *len = i - 2; |
61012eef | 1088 | else if (i >= 1 && startswith (encoded + i - 1, "__")) |
29480c32 JB |
1089 | *len = i - 1; |
1090 | } | |
1091 | } | |
1092 | ||
1093 | /* Remove the suffix introduced by the compiler for protected object | |
1094 | subprograms. */ | |
1095 | ||
1096 | static void | |
1097 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
1098 | { | |
1099 | /* Remove trailing N. */ | |
1100 | ||
1101 | /* Protected entry subprograms are broken into two | |
1102 | separate subprograms: The first one is unprotected, and has | |
1103 | a 'N' suffix; the second is the protected version, and has | |
0963b4bd | 1104 | the 'P' suffix. The second calls the first one after handling |
29480c32 JB |
1105 | the protection. Since the P subprograms are internally generated, |
1106 | we leave these names undecoded, giving the user a clue that this | |
1107 | entity is internal. */ | |
1108 | ||
1109 | if (*len > 1 | |
1110 | && encoded[*len - 1] == 'N' | |
1111 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
1112 | *len = *len - 1; | |
1113 | } | |
1114 | ||
69fadcdf JB |
1115 | /* Remove trailing X[bn]* suffixes (indicating names in package bodies). */ |
1116 | ||
1117 | static void | |
1118 | ada_remove_Xbn_suffix (const char *encoded, int *len) | |
1119 | { | |
1120 | int i = *len - 1; | |
1121 | ||
1122 | while (i > 0 && (encoded[i] == 'b' || encoded[i] == 'n')) | |
1123 | i--; | |
1124 | ||
1125 | if (encoded[i] != 'X') | |
1126 | return; | |
1127 | ||
1128 | if (i == 0) | |
1129 | return; | |
1130 | ||
1131 | if (isalnum (encoded[i-1])) | |
1132 | *len = i; | |
1133 | } | |
1134 | ||
29480c32 JB |
1135 | /* If ENCODED follows the GNAT entity encoding conventions, then return |
1136 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
1137 | replaced by ENCODED. | |
14f9c5c9 | 1138 | |
4c4b4cd2 | 1139 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 1140 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
1141 | is returned. */ |
1142 | ||
1143 | const char * | |
1144 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
1145 | { |
1146 | int i, j; | |
1147 | int len0; | |
d2e4a39e | 1148 | const char *p; |
4c4b4cd2 | 1149 | char *decoded; |
14f9c5c9 | 1150 | int at_start_name; |
4c4b4cd2 PH |
1151 | static char *decoding_buffer = NULL; |
1152 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 1153 | |
0d81f350 JG |
1154 | /* With function descriptors on PPC64, the value of a symbol named |
1155 | ".FN", if it exists, is the entry point of the function "FN". */ | |
1156 | if (encoded[0] == '.') | |
1157 | encoded += 1; | |
1158 | ||
29480c32 JB |
1159 | /* The name of the Ada main procedure starts with "_ada_". |
1160 | This prefix is not part of the decoded name, so skip this part | |
1161 | if we see this prefix. */ | |
61012eef | 1162 | if (startswith (encoded, "_ada_")) |
4c4b4cd2 | 1163 | encoded += 5; |
14f9c5c9 | 1164 | |
29480c32 JB |
1165 | /* If the name starts with '_', then it is not a properly encoded |
1166 | name, so do not attempt to decode it. Similarly, if the name | |
1167 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 1168 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
1169 | goto Suppress; |
1170 | ||
4c4b4cd2 | 1171 | len0 = strlen (encoded); |
4c4b4cd2 | 1172 | |
29480c32 JB |
1173 | ada_remove_trailing_digits (encoded, &len0); |
1174 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 1175 | |
4c4b4cd2 PH |
1176 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
1177 | the suffix is located before the current "end" of ENCODED. We want | |
1178 | to avoid re-matching parts of ENCODED that have previously been | |
1179 | marked as discarded (by decrementing LEN0). */ | |
1180 | p = strstr (encoded, "___"); | |
1181 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
1182 | { |
1183 | if (p[3] == 'X') | |
4c4b4cd2 | 1184 | len0 = p - encoded; |
14f9c5c9 | 1185 | else |
4c4b4cd2 | 1186 | goto Suppress; |
14f9c5c9 | 1187 | } |
4c4b4cd2 | 1188 | |
29480c32 JB |
1189 | /* Remove any trailing TKB suffix. It tells us that this symbol |
1190 | is for the body of a task, but that information does not actually | |
1191 | appear in the decoded name. */ | |
1192 | ||
61012eef | 1193 | if (len0 > 3 && startswith (encoded + len0 - 3, "TKB")) |
14f9c5c9 | 1194 | len0 -= 3; |
76a01679 | 1195 | |
a10967fa JB |
1196 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
1197 | from the TKB suffix because it is used for non-anonymous task | |
1198 | bodies. */ | |
1199 | ||
61012eef | 1200 | if (len0 > 2 && startswith (encoded + len0 - 2, "TB")) |
a10967fa JB |
1201 | len0 -= 2; |
1202 | ||
29480c32 JB |
1203 | /* Remove trailing "B" suffixes. */ |
1204 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
1205 | ||
61012eef | 1206 | if (len0 > 1 && startswith (encoded + len0 - 1, "B")) |
14f9c5c9 AS |
1207 | len0 -= 1; |
1208 | ||
4c4b4cd2 | 1209 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 1210 | |
4c4b4cd2 PH |
1211 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
1212 | decoded = decoding_buffer; | |
14f9c5c9 | 1213 | |
29480c32 JB |
1214 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
1215 | ||
4c4b4cd2 | 1216 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1217 | { |
4c4b4cd2 PH |
1218 | i = len0 - 2; |
1219 | while ((i >= 0 && isdigit (encoded[i])) | |
1220 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
1221 | i -= 1; | |
1222 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
1223 | len0 = i - 1; | |
1224 | else if (encoded[i] == '$') | |
1225 | len0 = i; | |
d2e4a39e | 1226 | } |
14f9c5c9 | 1227 | |
29480c32 JB |
1228 | /* The first few characters that are not alphabetic are not part |
1229 | of any encoding we use, so we can copy them over verbatim. */ | |
1230 | ||
4c4b4cd2 PH |
1231 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
1232 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
1233 | |
1234 | at_start_name = 1; | |
1235 | while (i < len0) | |
1236 | { | |
29480c32 | 1237 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
1238 | if (at_start_name && encoded[i] == 'O') |
1239 | { | |
1240 | int k; | |
5b4ee69b | 1241 | |
4c4b4cd2 PH |
1242 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) |
1243 | { | |
1244 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
1245 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
1246 | op_len - 1) == 0) | |
1247 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1248 | { |
1249 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1250 | at_start_name = 0; | |
1251 | i += op_len; | |
1252 | j += strlen (ada_opname_table[k].decoded); | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | if (ada_opname_table[k].encoded != NULL) | |
1257 | continue; | |
1258 | } | |
14f9c5c9 AS |
1259 | at_start_name = 0; |
1260 | ||
529cad9c PH |
1261 | /* Replace "TK__" with "__", which will eventually be translated |
1262 | into "." (just below). */ | |
1263 | ||
61012eef | 1264 | if (i < len0 - 4 && startswith (encoded + i, "TK__")) |
4c4b4cd2 | 1265 | i += 2; |
529cad9c | 1266 | |
29480c32 JB |
1267 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1268 | be translated into "." (just below). These are internal names | |
1269 | generated for anonymous blocks inside which our symbol is nested. */ | |
1270 | ||
1271 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1272 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1273 | && isdigit (encoded [i+4])) | |
1274 | { | |
1275 | int k = i + 5; | |
1276 | ||
1277 | while (k < len0 && isdigit (encoded[k])) | |
1278 | k++; /* Skip any extra digit. */ | |
1279 | ||
1280 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1281 | is indeed followed by "__". */ | |
1282 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1283 | i = k; | |
1284 | } | |
1285 | ||
529cad9c PH |
1286 | /* Remove _E{DIGITS}+[sb] */ |
1287 | ||
1288 | /* Just as for protected object subprograms, there are 2 categories | |
0963b4bd | 1289 | of subprograms created by the compiler for each entry. The first |
529cad9c PH |
1290 | one implements the actual entry code, and has a suffix following |
1291 | the convention above; the second one implements the barrier and | |
1292 | uses the same convention as above, except that the 'E' is replaced | |
1293 | by a 'B'. | |
1294 | ||
1295 | Just as above, we do not decode the name of barrier functions | |
1296 | to give the user a clue that the code he is debugging has been | |
1297 | internally generated. */ | |
1298 | ||
1299 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1300 | && isdigit (encoded[i+2])) | |
1301 | { | |
1302 | int k = i + 3; | |
1303 | ||
1304 | while (k < len0 && isdigit (encoded[k])) | |
1305 | k++; | |
1306 | ||
1307 | if (k < len0 | |
1308 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1309 | { | |
1310 | k++; | |
1311 | /* Just as an extra precaution, make sure that if this | |
1312 | suffix is followed by anything else, it is a '_'. | |
1313 | Otherwise, we matched this sequence by accident. */ | |
1314 | if (k == len0 | |
1315 | || (k < len0 && encoded[k] == '_')) | |
1316 | i = k; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1321 | the GNAT front-end in protected object subprograms. */ | |
1322 | ||
1323 | if (i < len0 + 3 | |
1324 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1325 | { | |
1326 | /* Backtrack a bit up until we reach either the begining of | |
1327 | the encoded name, or "__". Make sure that we only find | |
1328 | digits or lowercase characters. */ | |
1329 | const char *ptr = encoded + i - 1; | |
1330 | ||
1331 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1332 | ptr--; | |
1333 | if (ptr < encoded | |
1334 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1335 | i++; | |
1336 | } | |
1337 | ||
4c4b4cd2 PH |
1338 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1339 | { | |
29480c32 JB |
1340 | /* This is a X[bn]* sequence not separated from the previous |
1341 | part of the name with a non-alpha-numeric character (in other | |
1342 | words, immediately following an alpha-numeric character), then | |
1343 | verify that it is placed at the end of the encoded name. If | |
1344 | not, then the encoding is not valid and we should abort the | |
1345 | decoding. Otherwise, just skip it, it is used in body-nested | |
1346 | package names. */ | |
4c4b4cd2 PH |
1347 | do |
1348 | i += 1; | |
1349 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1350 | if (i < len0) | |
1351 | goto Suppress; | |
1352 | } | |
cdc7bb92 | 1353 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
4c4b4cd2 | 1354 | { |
29480c32 | 1355 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1356 | decoded[j] = '.'; |
1357 | at_start_name = 1; | |
1358 | i += 2; | |
1359 | j += 1; | |
1360 | } | |
14f9c5c9 | 1361 | else |
4c4b4cd2 | 1362 | { |
29480c32 JB |
1363 | /* It's a character part of the decoded name, so just copy it |
1364 | over. */ | |
4c4b4cd2 PH |
1365 | decoded[j] = encoded[i]; |
1366 | i += 1; | |
1367 | j += 1; | |
1368 | } | |
14f9c5c9 | 1369 | } |
4c4b4cd2 | 1370 | decoded[j] = '\000'; |
14f9c5c9 | 1371 | |
29480c32 JB |
1372 | /* Decoded names should never contain any uppercase character. |
1373 | Double-check this, and abort the decoding if we find one. */ | |
1374 | ||
4c4b4cd2 PH |
1375 | for (i = 0; decoded[i] != '\0'; i += 1) |
1376 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1377 | goto Suppress; |
1378 | ||
4c4b4cd2 PH |
1379 | if (strcmp (decoded, encoded) == 0) |
1380 | return encoded; | |
1381 | else | |
1382 | return decoded; | |
14f9c5c9 AS |
1383 | |
1384 | Suppress: | |
4c4b4cd2 PH |
1385 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1386 | decoded = decoding_buffer; | |
1387 | if (encoded[0] == '<') | |
1388 | strcpy (decoded, encoded); | |
14f9c5c9 | 1389 | else |
88c15c34 | 1390 | xsnprintf (decoded, decoding_buffer_size, "<%s>", encoded); |
4c4b4cd2 PH |
1391 | return decoded; |
1392 | ||
1393 | } | |
1394 | ||
1395 | /* Table for keeping permanent unique copies of decoded names. Once | |
1396 | allocated, names in this table are never released. While this is a | |
1397 | storage leak, it should not be significant unless there are massive | |
1398 | changes in the set of decoded names in successive versions of a | |
1399 | symbol table loaded during a single session. */ | |
1400 | static struct htab *decoded_names_store; | |
1401 | ||
1402 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1403 | in the language-specific part of GSYMBOL, if it has not been | |
1404 | previously computed. Tries to save the decoded name in the same | |
1405 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1406 | in any case, the decoded symbol has a lifetime at least that of | |
0963b4bd | 1407 | GSYMBOL). |
4c4b4cd2 PH |
1408 | The GSYMBOL parameter is "mutable" in the C++ sense: logically |
1409 | const, but nevertheless modified to a semantically equivalent form | |
0963b4bd | 1410 | when a decoded name is cached in it. */ |
4c4b4cd2 | 1411 | |
45e6c716 | 1412 | const char * |
f85f34ed | 1413 | ada_decode_symbol (const struct general_symbol_info *arg) |
4c4b4cd2 | 1414 | { |
f85f34ed TT |
1415 | struct general_symbol_info *gsymbol = (struct general_symbol_info *) arg; |
1416 | const char **resultp = | |
615b3f62 | 1417 | &gsymbol->language_specific.demangled_name; |
5b4ee69b | 1418 | |
f85f34ed | 1419 | if (!gsymbol->ada_mangled) |
4c4b4cd2 PH |
1420 | { |
1421 | const char *decoded = ada_decode (gsymbol->name); | |
f85f34ed | 1422 | struct obstack *obstack = gsymbol->language_specific.obstack; |
5b4ee69b | 1423 | |
f85f34ed | 1424 | gsymbol->ada_mangled = 1; |
5b4ee69b | 1425 | |
f85f34ed | 1426 | if (obstack != NULL) |
224c3ddb SM |
1427 | *resultp |
1428 | = (const char *) obstack_copy0 (obstack, decoded, strlen (decoded)); | |
f85f34ed | 1429 | else |
76a01679 | 1430 | { |
f85f34ed TT |
1431 | /* Sometimes, we can't find a corresponding objfile, in |
1432 | which case, we put the result on the heap. Since we only | |
1433 | decode when needed, we hope this usually does not cause a | |
1434 | significant memory leak (FIXME). */ | |
1435 | ||
76a01679 JB |
1436 | char **slot = (char **) htab_find_slot (decoded_names_store, |
1437 | decoded, INSERT); | |
5b4ee69b | 1438 | |
76a01679 JB |
1439 | if (*slot == NULL) |
1440 | *slot = xstrdup (decoded); | |
1441 | *resultp = *slot; | |
1442 | } | |
4c4b4cd2 | 1443 | } |
14f9c5c9 | 1444 | |
4c4b4cd2 PH |
1445 | return *resultp; |
1446 | } | |
76a01679 | 1447 | |
2c0b251b | 1448 | static char * |
76a01679 | 1449 | ada_la_decode (const char *encoded, int options) |
4c4b4cd2 PH |
1450 | { |
1451 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1452 | } |
1453 | ||
8b302db8 TT |
1454 | /* Implement la_sniff_from_mangled_name for Ada. */ |
1455 | ||
1456 | static int | |
1457 | ada_sniff_from_mangled_name (const char *mangled, char **out) | |
1458 | { | |
1459 | const char *demangled = ada_decode (mangled); | |
1460 | ||
1461 | *out = NULL; | |
1462 | ||
1463 | if (demangled != mangled && demangled != NULL && demangled[0] != '<') | |
1464 | { | |
1465 | /* Set the gsymbol language to Ada, but still return 0. | |
1466 | Two reasons for that: | |
1467 | ||
1468 | 1. For Ada, we prefer computing the symbol's decoded name | |
1469 | on the fly rather than pre-compute it, in order to save | |
1470 | memory (Ada projects are typically very large). | |
1471 | ||
1472 | 2. There are some areas in the definition of the GNAT | |
1473 | encoding where, with a bit of bad luck, we might be able | |
1474 | to decode a non-Ada symbol, generating an incorrect | |
1475 | demangled name (Eg: names ending with "TB" for instance | |
1476 | are identified as task bodies and so stripped from | |
1477 | the decoded name returned). | |
1478 | ||
1479 | Returning 1, here, but not setting *DEMANGLED, helps us get a | |
1480 | little bit of the best of both worlds. Because we're last, | |
1481 | we should not affect any of the other languages that were | |
1482 | able to demangle the symbol before us; we get to correctly | |
1483 | tag Ada symbols as such; and even if we incorrectly tagged a | |
1484 | non-Ada symbol, which should be rare, any routing through the | |
1485 | Ada language should be transparent (Ada tries to behave much | |
1486 | like C/C++ with non-Ada symbols). */ | |
1487 | return 1; | |
1488 | } | |
1489 | ||
1490 | return 0; | |
1491 | } | |
1492 | ||
14f9c5c9 | 1493 | \f |
d2e4a39e | 1494 | |
4c4b4cd2 | 1495 | /* Arrays */ |
14f9c5c9 | 1496 | |
28c85d6c JB |
1497 | /* Assuming that INDEX_DESC_TYPE is an ___XA structure, a structure |
1498 | generated by the GNAT compiler to describe the index type used | |
1499 | for each dimension of an array, check whether it follows the latest | |
1500 | known encoding. If not, fix it up to conform to the latest encoding. | |
1501 | Otherwise, do nothing. This function also does nothing if | |
1502 | INDEX_DESC_TYPE is NULL. | |
1503 | ||
1504 | The GNAT encoding used to describle the array index type evolved a bit. | |
1505 | Initially, the information would be provided through the name of each | |
1506 | field of the structure type only, while the type of these fields was | |
1507 | described as unspecified and irrelevant. The debugger was then expected | |
1508 | to perform a global type lookup using the name of that field in order | |
1509 | to get access to the full index type description. Because these global | |
1510 | lookups can be very expensive, the encoding was later enhanced to make | |
1511 | the global lookup unnecessary by defining the field type as being | |
1512 | the full index type description. | |
1513 | ||
1514 | The purpose of this routine is to allow us to support older versions | |
1515 | of the compiler by detecting the use of the older encoding, and by | |
1516 | fixing up the INDEX_DESC_TYPE to follow the new one (at this point, | |
1517 | we essentially replace each field's meaningless type by the associated | |
1518 | index subtype). */ | |
1519 | ||
1520 | void | |
1521 | ada_fixup_array_indexes_type (struct type *index_desc_type) | |
1522 | { | |
1523 | int i; | |
1524 | ||
1525 | if (index_desc_type == NULL) | |
1526 | return; | |
1527 | gdb_assert (TYPE_NFIELDS (index_desc_type) > 0); | |
1528 | ||
1529 | /* Check if INDEX_DESC_TYPE follows the older encoding (it is sufficient | |
1530 | to check one field only, no need to check them all). If not, return | |
1531 | now. | |
1532 | ||
1533 | If our INDEX_DESC_TYPE was generated using the older encoding, | |
1534 | the field type should be a meaningless integer type whose name | |
1535 | is not equal to the field name. */ | |
1536 | if (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)) != NULL | |
1537 | && strcmp (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)), | |
1538 | TYPE_FIELD_NAME (index_desc_type, 0)) == 0) | |
1539 | return; | |
1540 | ||
1541 | /* Fixup each field of INDEX_DESC_TYPE. */ | |
1542 | for (i = 0; i < TYPE_NFIELDS (index_desc_type); i++) | |
1543 | { | |
0d5cff50 | 1544 | const char *name = TYPE_FIELD_NAME (index_desc_type, i); |
28c85d6c JB |
1545 | struct type *raw_type = ada_check_typedef (ada_find_any_type (name)); |
1546 | ||
1547 | if (raw_type) | |
1548 | TYPE_FIELD_TYPE (index_desc_type, i) = raw_type; | |
1549 | } | |
1550 | } | |
1551 | ||
4c4b4cd2 | 1552 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1553 | |
a121b7c1 | 1554 | static const char *bound_name[] = { |
d2e4a39e | 1555 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", |
14f9c5c9 AS |
1556 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1557 | }; | |
1558 | ||
1559 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1560 | ||
4c4b4cd2 | 1561 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1562 | |
14f9c5c9 | 1563 | |
4c4b4cd2 PH |
1564 | /* The desc_* routines return primitive portions of array descriptors |
1565 | (fat pointers). */ | |
14f9c5c9 AS |
1566 | |
1567 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1568 | level of indirection, if needed. */ |
1569 | ||
d2e4a39e AS |
1570 | static struct type * |
1571 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1572 | { |
1573 | if (type == NULL) | |
1574 | return NULL; | |
61ee279c | 1575 | type = ada_check_typedef (type); |
720d1a40 JB |
1576 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
1577 | type = ada_typedef_target_type (type); | |
1578 | ||
1265e4aa JB |
1579 | if (type != NULL |
1580 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1581 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1582 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1583 | else |
1584 | return type; | |
1585 | } | |
1586 | ||
4c4b4cd2 PH |
1587 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1588 | ||
14f9c5c9 | 1589 | static int |
d2e4a39e | 1590 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1591 | { |
d2e4a39e | 1592 | return |
14f9c5c9 AS |
1593 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1594 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1595 | } | |
1596 | ||
4c4b4cd2 PH |
1597 | /* The descriptor type for thin pointer type TYPE. */ |
1598 | ||
d2e4a39e AS |
1599 | static struct type * |
1600 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1601 | { |
d2e4a39e | 1602 | struct type *base_type = desc_base_type (type); |
5b4ee69b | 1603 | |
14f9c5c9 AS |
1604 | if (base_type == NULL) |
1605 | return NULL; | |
1606 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1607 | return base_type; | |
d2e4a39e | 1608 | else |
14f9c5c9 | 1609 | { |
d2e4a39e | 1610 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
5b4ee69b | 1611 | |
14f9c5c9 | 1612 | if (alt_type == NULL) |
4c4b4cd2 | 1613 | return base_type; |
14f9c5c9 | 1614 | else |
4c4b4cd2 | 1615 | return alt_type; |
14f9c5c9 AS |
1616 | } |
1617 | } | |
1618 | ||
4c4b4cd2 PH |
1619 | /* A pointer to the array data for thin-pointer value VAL. */ |
1620 | ||
d2e4a39e AS |
1621 | static struct value * |
1622 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1623 | { |
828292f2 | 1624 | struct type *type = ada_check_typedef (value_type (val)); |
556bdfd4 | 1625 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
5b4ee69b | 1626 | |
556bdfd4 UW |
1627 | data_type = lookup_pointer_type (data_type); |
1628 | ||
14f9c5c9 | 1629 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
556bdfd4 | 1630 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1631 | else |
42ae5230 | 1632 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1633 | } |
1634 | ||
4c4b4cd2 PH |
1635 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1636 | ||
14f9c5c9 | 1637 | static int |
d2e4a39e | 1638 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1639 | { |
1640 | type = desc_base_type (type); | |
1641 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1642 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1643 | } |
1644 | ||
4c4b4cd2 PH |
1645 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1646 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1647 | |
d2e4a39e AS |
1648 | static struct type * |
1649 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1650 | { |
d2e4a39e | 1651 | struct type *r; |
14f9c5c9 AS |
1652 | |
1653 | type = desc_base_type (type); | |
1654 | ||
1655 | if (type == NULL) | |
1656 | return NULL; | |
1657 | else if (is_thin_pntr (type)) | |
1658 | { | |
1659 | type = thin_descriptor_type (type); | |
1660 | if (type == NULL) | |
4c4b4cd2 | 1661 | return NULL; |
14f9c5c9 AS |
1662 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1663 | if (r != NULL) | |
61ee279c | 1664 | return ada_check_typedef (r); |
14f9c5c9 AS |
1665 | } |
1666 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1667 | { | |
1668 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1669 | if (r != NULL) | |
61ee279c | 1670 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1671 | } |
1672 | return NULL; | |
1673 | } | |
1674 | ||
1675 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1676 | one, a pointer to its bounds data. Otherwise NULL. */ |
1677 | ||
d2e4a39e AS |
1678 | static struct value * |
1679 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1680 | { |
df407dfe | 1681 | struct type *type = ada_check_typedef (value_type (arr)); |
5b4ee69b | 1682 | |
d2e4a39e | 1683 | if (is_thin_pntr (type)) |
14f9c5c9 | 1684 | { |
d2e4a39e | 1685 | struct type *bounds_type = |
4c4b4cd2 | 1686 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1687 | LONGEST addr; |
1688 | ||
4cdfadb1 | 1689 | if (bounds_type == NULL) |
323e0a4a | 1690 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1691 | |
1692 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1693 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1694 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1695 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1696 | addr = value_as_long (arr); |
d2e4a39e | 1697 | else |
42ae5230 | 1698 | addr = value_address (arr); |
14f9c5c9 | 1699 | |
d2e4a39e | 1700 | return |
4c4b4cd2 PH |
1701 | value_from_longest (lookup_pointer_type (bounds_type), |
1702 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1703 | } |
1704 | ||
1705 | else if (is_thick_pntr (type)) | |
05e522ef JB |
1706 | { |
1707 | struct value *p_bounds = value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, | |
1708 | _("Bad GNAT array descriptor")); | |
1709 | struct type *p_bounds_type = value_type (p_bounds); | |
1710 | ||
1711 | if (p_bounds_type | |
1712 | && TYPE_CODE (p_bounds_type) == TYPE_CODE_PTR) | |
1713 | { | |
1714 | struct type *target_type = TYPE_TARGET_TYPE (p_bounds_type); | |
1715 | ||
1716 | if (TYPE_STUB (target_type)) | |
1717 | p_bounds = value_cast (lookup_pointer_type | |
1718 | (ada_check_typedef (target_type)), | |
1719 | p_bounds); | |
1720 | } | |
1721 | else | |
1722 | error (_("Bad GNAT array descriptor")); | |
1723 | ||
1724 | return p_bounds; | |
1725 | } | |
14f9c5c9 AS |
1726 | else |
1727 | return NULL; | |
1728 | } | |
1729 | ||
4c4b4cd2 PH |
1730 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1731 | position of the field containing the address of the bounds data. */ | |
1732 | ||
14f9c5c9 | 1733 | static int |
d2e4a39e | 1734 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1735 | { |
1736 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1737 | } | |
1738 | ||
1739 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1740 | size of the field containing the address of the bounds data. */ |
1741 | ||
14f9c5c9 | 1742 | static int |
d2e4a39e | 1743 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1744 | { |
1745 | type = desc_base_type (type); | |
1746 | ||
d2e4a39e | 1747 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1748 | return TYPE_FIELD_BITSIZE (type, 1); |
1749 | else | |
61ee279c | 1750 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1751 | } |
1752 | ||
4c4b4cd2 | 1753 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1754 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1755 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1756 | data. */ | |
4c4b4cd2 | 1757 | |
d2e4a39e | 1758 | static struct type * |
556bdfd4 | 1759 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1760 | { |
1761 | type = desc_base_type (type); | |
1762 | ||
4c4b4cd2 | 1763 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1764 | if (is_thin_pntr (type)) |
556bdfd4 | 1765 | return desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1)); |
14f9c5c9 | 1766 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1767 | { |
1768 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1769 | ||
1770 | if (data_type | |
1771 | && TYPE_CODE (ada_check_typedef (data_type)) == TYPE_CODE_PTR) | |
05e522ef | 1772 | return ada_check_typedef (TYPE_TARGET_TYPE (data_type)); |
556bdfd4 UW |
1773 | } |
1774 | ||
1775 | return NULL; | |
14f9c5c9 AS |
1776 | } |
1777 | ||
1778 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1779 | its array data. */ | |
4c4b4cd2 | 1780 | |
d2e4a39e AS |
1781 | static struct value * |
1782 | desc_data (struct value *arr) | |
14f9c5c9 | 1783 | { |
df407dfe | 1784 | struct type *type = value_type (arr); |
5b4ee69b | 1785 | |
14f9c5c9 AS |
1786 | if (is_thin_pntr (type)) |
1787 | return thin_data_pntr (arr); | |
1788 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1789 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1790 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1791 | else |
1792 | return NULL; | |
1793 | } | |
1794 | ||
1795 | ||
1796 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1797 | position of the field containing the address of the data. */ |
1798 | ||
14f9c5c9 | 1799 | static int |
d2e4a39e | 1800 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1801 | { |
1802 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1803 | } | |
1804 | ||
1805 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1806 | size of the field containing the address of the data. */ |
1807 | ||
14f9c5c9 | 1808 | static int |
d2e4a39e | 1809 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1810 | { |
1811 | type = desc_base_type (type); | |
1812 | ||
1813 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1814 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1815 | else |
14f9c5c9 AS |
1816 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1817 | } | |
1818 | ||
4c4b4cd2 | 1819 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1820 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1821 | bound, if WHICH is 1. The first bound is I=1. */ |
1822 | ||
d2e4a39e AS |
1823 | static struct value * |
1824 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1825 | { |
d2e4a39e | 1826 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1827 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1828 | } |
1829 | ||
1830 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1831 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1832 | bound, if WHICH is 1. The first bound is I=1. */ |
1833 | ||
14f9c5c9 | 1834 | static int |
d2e4a39e | 1835 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1836 | { |
d2e4a39e | 1837 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1838 | } |
1839 | ||
1840 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1841 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1842 | bound, if WHICH is 1. The first bound is I=1. */ |
1843 | ||
76a01679 | 1844 | static int |
d2e4a39e | 1845 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1846 | { |
1847 | type = desc_base_type (type); | |
1848 | ||
d2e4a39e AS |
1849 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1850 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1851 | else | |
1852 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1853 | } |
1854 | ||
1855 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1856 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1857 | ||
d2e4a39e AS |
1858 | static struct type * |
1859 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1860 | { |
1861 | type = desc_base_type (type); | |
1862 | ||
1863 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1864 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1865 | else | |
14f9c5c9 AS |
1866 | return NULL; |
1867 | } | |
1868 | ||
4c4b4cd2 PH |
1869 | /* The number of index positions in the array-bounds type TYPE. |
1870 | Return 0 if TYPE is NULL. */ | |
1871 | ||
14f9c5c9 | 1872 | static int |
d2e4a39e | 1873 | desc_arity (struct type *type) |
14f9c5c9 AS |
1874 | { |
1875 | type = desc_base_type (type); | |
1876 | ||
1877 | if (type != NULL) | |
1878 | return TYPE_NFIELDS (type) / 2; | |
1879 | return 0; | |
1880 | } | |
1881 | ||
4c4b4cd2 PH |
1882 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1883 | an array descriptor type (representing an unconstrained array | |
1884 | type). */ | |
1885 | ||
76a01679 JB |
1886 | static int |
1887 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1888 | { |
1889 | if (type == NULL) | |
1890 | return 0; | |
61ee279c | 1891 | type = ada_check_typedef (type); |
4c4b4cd2 | 1892 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1893 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1894 | } |
1895 | ||
52ce6436 | 1896 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
0963b4bd | 1897 | * to one. */ |
52ce6436 | 1898 | |
2c0b251b | 1899 | static int |
52ce6436 PH |
1900 | ada_is_array_type (struct type *type) |
1901 | { | |
1902 | while (type != NULL | |
1903 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1904 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1905 | type = TYPE_TARGET_TYPE (type); | |
1906 | return ada_is_direct_array_type (type); | |
1907 | } | |
1908 | ||
4c4b4cd2 | 1909 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1910 | |
14f9c5c9 | 1911 | int |
4c4b4cd2 | 1912 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1913 | { |
1914 | if (type == NULL) | |
1915 | return 0; | |
61ee279c | 1916 | type = ada_check_typedef (type); |
14f9c5c9 | 1917 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 | 1918 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
b0dd7688 JB |
1919 | && TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type))) |
1920 | == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1921 | } |
1922 | ||
4c4b4cd2 PH |
1923 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1924 | ||
14f9c5c9 | 1925 | int |
4c4b4cd2 | 1926 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1927 | { |
556bdfd4 | 1928 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
1929 | |
1930 | if (type == NULL) | |
1931 | return 0; | |
61ee279c | 1932 | type = ada_check_typedef (type); |
556bdfd4 UW |
1933 | return (data_type != NULL |
1934 | && TYPE_CODE (data_type) == TYPE_CODE_ARRAY | |
1935 | && desc_arity (desc_bounds_type (type)) > 0); | |
14f9c5c9 AS |
1936 | } |
1937 | ||
1938 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1939 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1940 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1941 | is still needed. */ |
1942 | ||
14f9c5c9 | 1943 | int |
ebf56fd3 | 1944 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1945 | { |
d2e4a39e | 1946 | return |
14f9c5c9 AS |
1947 | type != NULL |
1948 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1949 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1950 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1951 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1952 | } |
1953 | ||
1954 | ||
4c4b4cd2 | 1955 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1956 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1957 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1958 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1959 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1960 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1961 | a descriptor. */ |
d2e4a39e AS |
1962 | struct type * |
1963 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1964 | { |
ad82864c JB |
1965 | if (ada_is_constrained_packed_array_type (value_type (arr))) |
1966 | return decode_constrained_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1967 | |
df407dfe AC |
1968 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1969 | return value_type (arr); | |
d2e4a39e AS |
1970 | |
1971 | if (!bounds) | |
ad82864c JB |
1972 | { |
1973 | struct type *array_type = | |
1974 | ada_check_typedef (desc_data_target_type (value_type (arr))); | |
1975 | ||
1976 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
1977 | TYPE_FIELD_BITSIZE (array_type, 0) = | |
1978 | decode_packed_array_bitsize (value_type (arr)); | |
1979 | ||
1980 | return array_type; | |
1981 | } | |
14f9c5c9 AS |
1982 | else |
1983 | { | |
d2e4a39e | 1984 | struct type *elt_type; |
14f9c5c9 | 1985 | int arity; |
d2e4a39e | 1986 | struct value *descriptor; |
14f9c5c9 | 1987 | |
df407dfe AC |
1988 | elt_type = ada_array_element_type (value_type (arr), -1); |
1989 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1990 | |
d2e4a39e | 1991 | if (elt_type == NULL || arity == 0) |
df407dfe | 1992 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1993 | |
1994 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1995 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1996 | return NULL; |
d2e4a39e | 1997 | while (arity > 0) |
4c4b4cd2 | 1998 | { |
e9bb382b UW |
1999 | struct type *range_type = alloc_type_copy (value_type (arr)); |
2000 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
4c4b4cd2 PH |
2001 | struct value *low = desc_one_bound (descriptor, arity, 0); |
2002 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
4c4b4cd2 | 2003 | |
5b4ee69b | 2004 | arity -= 1; |
0c9c3474 SA |
2005 | create_static_range_type (range_type, value_type (low), |
2006 | longest_to_int (value_as_long (low)), | |
2007 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 | 2008 | elt_type = create_array_type (array_type, elt_type, range_type); |
ad82864c JB |
2009 | |
2010 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
e67ad678 JB |
2011 | { |
2012 | /* We need to store the element packed bitsize, as well as | |
2013 | recompute the array size, because it was previously | |
2014 | computed based on the unpacked element size. */ | |
2015 | LONGEST lo = value_as_long (low); | |
2016 | LONGEST hi = value_as_long (high); | |
2017 | ||
2018 | TYPE_FIELD_BITSIZE (elt_type, 0) = | |
2019 | decode_packed_array_bitsize (value_type (arr)); | |
2020 | /* If the array has no element, then the size is already | |
2021 | zero, and does not need to be recomputed. */ | |
2022 | if (lo < hi) | |
2023 | { | |
2024 | int array_bitsize = | |
2025 | (hi - lo + 1) * TYPE_FIELD_BITSIZE (elt_type, 0); | |
2026 | ||
2027 | TYPE_LENGTH (array_type) = (array_bitsize + 7) / 8; | |
2028 | } | |
2029 | } | |
4c4b4cd2 | 2030 | } |
14f9c5c9 AS |
2031 | |
2032 | return lookup_pointer_type (elt_type); | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
2037 | Otherwise, returns either a standard GDB array with bounds set |
2038 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
2039 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
2040 | ||
d2e4a39e AS |
2041 | struct value * |
2042 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 2043 | { |
df407dfe | 2044 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2045 | { |
d2e4a39e | 2046 | struct type *arrType = ada_type_of_array (arr, 1); |
5b4ee69b | 2047 | |
14f9c5c9 | 2048 | if (arrType == NULL) |
4c4b4cd2 | 2049 | return NULL; |
14f9c5c9 AS |
2050 | return value_cast (arrType, value_copy (desc_data (arr))); |
2051 | } | |
ad82864c JB |
2052 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2053 | return decode_constrained_packed_array (arr); | |
14f9c5c9 AS |
2054 | else |
2055 | return arr; | |
2056 | } | |
2057 | ||
2058 | /* If ARR does not represent an array, returns ARR unchanged. | |
2059 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
2060 | be ARR itself if it already is in the proper form). */ |
2061 | ||
720d1a40 | 2062 | struct value * |
d2e4a39e | 2063 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 2064 | { |
df407dfe | 2065 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2066 | { |
d2e4a39e | 2067 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
5b4ee69b | 2068 | |
14f9c5c9 | 2069 | if (arrVal == NULL) |
323e0a4a | 2070 | error (_("Bounds unavailable for null array pointer.")); |
c1b5a1a6 | 2071 | ada_ensure_varsize_limit (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
2072 | return value_ind (arrVal); |
2073 | } | |
ad82864c JB |
2074 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2075 | return decode_constrained_packed_array (arr); | |
d2e4a39e | 2076 | else |
14f9c5c9 AS |
2077 | return arr; |
2078 | } | |
2079 | ||
2080 | /* If TYPE represents a GNAT array type, return it translated to an | |
2081 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
2082 | packing). For other types, is the identity. */ |
2083 | ||
d2e4a39e AS |
2084 | struct type * |
2085 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 2086 | { |
ad82864c JB |
2087 | if (ada_is_constrained_packed_array_type (type)) |
2088 | return decode_constrained_packed_array_type (type); | |
17280b9f UW |
2089 | |
2090 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 2091 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
2092 | |
2093 | return type; | |
14f9c5c9 AS |
2094 | } |
2095 | ||
4c4b4cd2 PH |
2096 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
2097 | ||
ad82864c JB |
2098 | static int |
2099 | ada_is_packed_array_type (struct type *type) | |
14f9c5c9 AS |
2100 | { |
2101 | if (type == NULL) | |
2102 | return 0; | |
4c4b4cd2 | 2103 | type = desc_base_type (type); |
61ee279c | 2104 | type = ada_check_typedef (type); |
d2e4a39e | 2105 | return |
14f9c5c9 AS |
2106 | ada_type_name (type) != NULL |
2107 | && strstr (ada_type_name (type), "___XP") != NULL; | |
2108 | } | |
2109 | ||
ad82864c JB |
2110 | /* Non-zero iff TYPE represents a standard GNAT constrained |
2111 | packed-array type. */ | |
2112 | ||
2113 | int | |
2114 | ada_is_constrained_packed_array_type (struct type *type) | |
2115 | { | |
2116 | return ada_is_packed_array_type (type) | |
2117 | && !ada_is_array_descriptor_type (type); | |
2118 | } | |
2119 | ||
2120 | /* Non-zero iff TYPE represents an array descriptor for a | |
2121 | unconstrained packed-array type. */ | |
2122 | ||
2123 | static int | |
2124 | ada_is_unconstrained_packed_array_type (struct type *type) | |
2125 | { | |
2126 | return ada_is_packed_array_type (type) | |
2127 | && ada_is_array_descriptor_type (type); | |
2128 | } | |
2129 | ||
2130 | /* Given that TYPE encodes a packed array type (constrained or unconstrained), | |
2131 | return the size of its elements in bits. */ | |
2132 | ||
2133 | static long | |
2134 | decode_packed_array_bitsize (struct type *type) | |
2135 | { | |
0d5cff50 DE |
2136 | const char *raw_name; |
2137 | const char *tail; | |
ad82864c JB |
2138 | long bits; |
2139 | ||
720d1a40 JB |
2140 | /* Access to arrays implemented as fat pointers are encoded as a typedef |
2141 | of the fat pointer type. We need the name of the fat pointer type | |
2142 | to do the decoding, so strip the typedef layer. */ | |
2143 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
2144 | type = ada_typedef_target_type (type); | |
2145 | ||
2146 | raw_name = ada_type_name (ada_check_typedef (type)); | |
ad82864c JB |
2147 | if (!raw_name) |
2148 | raw_name = ada_type_name (desc_base_type (type)); | |
2149 | ||
2150 | if (!raw_name) | |
2151 | return 0; | |
2152 | ||
2153 | tail = strstr (raw_name, "___XP"); | |
720d1a40 | 2154 | gdb_assert (tail != NULL); |
ad82864c JB |
2155 | |
2156 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) | |
2157 | { | |
2158 | lim_warning | |
2159 | (_("could not understand bit size information on packed array")); | |
2160 | return 0; | |
2161 | } | |
2162 | ||
2163 | return bits; | |
2164 | } | |
2165 | ||
14f9c5c9 AS |
2166 | /* Given that TYPE is a standard GDB array type with all bounds filled |
2167 | in, and that the element size of its ultimate scalar constituents | |
2168 | (that is, either its elements, or, if it is an array of arrays, its | |
2169 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
2170 | but with the bit sizes of its elements (and those of any | |
2171 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 | 2172 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
4a46959e JB |
2173 | in bits. |
2174 | ||
2175 | Note that, for arrays whose index type has an XA encoding where | |
2176 | a bound references a record discriminant, getting that discriminant, | |
2177 | and therefore the actual value of that bound, is not possible | |
2178 | because none of the given parameters gives us access to the record. | |
2179 | This function assumes that it is OK in the context where it is being | |
2180 | used to return an array whose bounds are still dynamic and where | |
2181 | the length is arbitrary. */ | |
4c4b4cd2 | 2182 | |
d2e4a39e | 2183 | static struct type * |
ad82864c | 2184 | constrained_packed_array_type (struct type *type, long *elt_bits) |
14f9c5c9 | 2185 | { |
d2e4a39e AS |
2186 | struct type *new_elt_type; |
2187 | struct type *new_type; | |
99b1c762 JB |
2188 | struct type *index_type_desc; |
2189 | struct type *index_type; | |
14f9c5c9 AS |
2190 | LONGEST low_bound, high_bound; |
2191 | ||
61ee279c | 2192 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2193 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
2194 | return type; | |
2195 | ||
99b1c762 JB |
2196 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
2197 | if (index_type_desc) | |
2198 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, 0), | |
2199 | NULL); | |
2200 | else | |
2201 | index_type = TYPE_INDEX_TYPE (type); | |
2202 | ||
e9bb382b | 2203 | new_type = alloc_type_copy (type); |
ad82864c JB |
2204 | new_elt_type = |
2205 | constrained_packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), | |
2206 | elt_bits); | |
99b1c762 | 2207 | create_array_type (new_type, new_elt_type, index_type); |
14f9c5c9 AS |
2208 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
2209 | TYPE_NAME (new_type) = ada_type_name (type); | |
2210 | ||
4a46959e JB |
2211 | if ((TYPE_CODE (check_typedef (index_type)) == TYPE_CODE_RANGE |
2212 | && is_dynamic_type (check_typedef (index_type))) | |
2213 | || get_discrete_bounds (index_type, &low_bound, &high_bound) < 0) | |
14f9c5c9 AS |
2214 | low_bound = high_bound = 0; |
2215 | if (high_bound < low_bound) | |
2216 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 2217 | else |
14f9c5c9 AS |
2218 | { |
2219 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 2220 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 2221 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
2222 | } |
2223 | ||
876cecd0 | 2224 | TYPE_FIXED_INSTANCE (new_type) = 1; |
14f9c5c9 AS |
2225 | return new_type; |
2226 | } | |
2227 | ||
ad82864c JB |
2228 | /* The array type encoded by TYPE, where |
2229 | ada_is_constrained_packed_array_type (TYPE). */ | |
4c4b4cd2 | 2230 | |
d2e4a39e | 2231 | static struct type * |
ad82864c | 2232 | decode_constrained_packed_array_type (struct type *type) |
d2e4a39e | 2233 | { |
0d5cff50 | 2234 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
727e3d2e | 2235 | char *name; |
0d5cff50 | 2236 | const char *tail; |
d2e4a39e | 2237 | struct type *shadow_type; |
14f9c5c9 | 2238 | long bits; |
14f9c5c9 | 2239 | |
727e3d2e JB |
2240 | if (!raw_name) |
2241 | raw_name = ada_type_name (desc_base_type (type)); | |
2242 | ||
2243 | if (!raw_name) | |
2244 | return NULL; | |
2245 | ||
2246 | name = (char *) alloca (strlen (raw_name) + 1); | |
2247 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
2248 | type = desc_base_type (type); |
2249 | ||
14f9c5c9 AS |
2250 | memcpy (name, raw_name, tail - raw_name); |
2251 | name[tail - raw_name] = '\000'; | |
2252 | ||
b4ba55a1 JB |
2253 | shadow_type = ada_find_parallel_type_with_name (type, name); |
2254 | ||
2255 | if (shadow_type == NULL) | |
14f9c5c9 | 2256 | { |
323e0a4a | 2257 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
2258 | return NULL; |
2259 | } | |
f168693b | 2260 | shadow_type = check_typedef (shadow_type); |
14f9c5c9 AS |
2261 | |
2262 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
2263 | { | |
0963b4bd MS |
2264 | lim_warning (_("could not understand bounds " |
2265 | "information on packed array")); | |
14f9c5c9 AS |
2266 | return NULL; |
2267 | } | |
d2e4a39e | 2268 | |
ad82864c JB |
2269 | bits = decode_packed_array_bitsize (type); |
2270 | return constrained_packed_array_type (shadow_type, &bits); | |
14f9c5c9 AS |
2271 | } |
2272 | ||
ad82864c JB |
2273 | /* Given that ARR is a struct value *indicating a GNAT constrained packed |
2274 | array, returns a simple array that denotes that array. Its type is a | |
14f9c5c9 AS |
2275 | standard GDB array type except that the BITSIZEs of the array |
2276 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 2277 | type length is set appropriately. */ |
14f9c5c9 | 2278 | |
d2e4a39e | 2279 | static struct value * |
ad82864c | 2280 | decode_constrained_packed_array (struct value *arr) |
14f9c5c9 | 2281 | { |
4c4b4cd2 | 2282 | struct type *type; |
14f9c5c9 | 2283 | |
11aa919a PMR |
2284 | /* If our value is a pointer, then dereference it. Likewise if |
2285 | the value is a reference. Make sure that this operation does not | |
2286 | cause the target type to be fixed, as this would indirectly cause | |
2287 | this array to be decoded. The rest of the routine assumes that | |
2288 | the array hasn't been decoded yet, so we use the basic "coerce_ref" | |
2289 | and "value_ind" routines to perform the dereferencing, as opposed | |
2290 | to using "ada_coerce_ref" or "ada_value_ind". */ | |
2291 | arr = coerce_ref (arr); | |
828292f2 | 2292 | if (TYPE_CODE (ada_check_typedef (value_type (arr))) == TYPE_CODE_PTR) |
284614f0 | 2293 | arr = value_ind (arr); |
4c4b4cd2 | 2294 | |
ad82864c | 2295 | type = decode_constrained_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
2296 | if (type == NULL) |
2297 | { | |
323e0a4a | 2298 | error (_("can't unpack array")); |
14f9c5c9 AS |
2299 | return NULL; |
2300 | } | |
61ee279c | 2301 | |
50810684 | 2302 | if (gdbarch_bits_big_endian (get_type_arch (value_type (arr))) |
32c9a795 | 2303 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
2304 | { |
2305 | /* This is a (right-justified) modular type representing a packed | |
2306 | array with no wrapper. In order to interpret the value through | |
2307 | the (left-justified) packed array type we just built, we must | |
2308 | first left-justify it. */ | |
2309 | int bit_size, bit_pos; | |
2310 | ULONGEST mod; | |
2311 | ||
df407dfe | 2312 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
2313 | bit_size = 0; |
2314 | while (mod > 0) | |
2315 | { | |
2316 | bit_size += 1; | |
2317 | mod >>= 1; | |
2318 | } | |
df407dfe | 2319 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
2320 | arr = ada_value_primitive_packed_val (arr, NULL, |
2321 | bit_pos / HOST_CHAR_BIT, | |
2322 | bit_pos % HOST_CHAR_BIT, | |
2323 | bit_size, | |
2324 | type); | |
2325 | } | |
2326 | ||
4c4b4cd2 | 2327 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
2328 | } |
2329 | ||
2330 | ||
2331 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 2332 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 2333 | |
d2e4a39e AS |
2334 | static struct value * |
2335 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2336 | { |
2337 | int i; | |
2338 | int bits, elt_off, bit_off; | |
2339 | long elt_total_bit_offset; | |
d2e4a39e AS |
2340 | struct type *elt_type; |
2341 | struct value *v; | |
14f9c5c9 AS |
2342 | |
2343 | bits = 0; | |
2344 | elt_total_bit_offset = 0; | |
df407dfe | 2345 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 2346 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 2347 | { |
d2e4a39e | 2348 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
2349 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
2350 | error | |
0963b4bd MS |
2351 | (_("attempt to do packed indexing of " |
2352 | "something other than a packed array")); | |
14f9c5c9 | 2353 | else |
4c4b4cd2 PH |
2354 | { |
2355 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
2356 | LONGEST lowerbound, upperbound; | |
2357 | LONGEST idx; | |
2358 | ||
2359 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
2360 | { | |
323e0a4a | 2361 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
2362 | lowerbound = upperbound = 0; |
2363 | } | |
2364 | ||
3cb382c9 | 2365 | idx = pos_atr (ind[i]); |
4c4b4cd2 | 2366 | if (idx < lowerbound || idx > upperbound) |
0963b4bd MS |
2367 | lim_warning (_("packed array index %ld out of bounds"), |
2368 | (long) idx); | |
4c4b4cd2 PH |
2369 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
2370 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 2371 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 2372 | } |
14f9c5c9 AS |
2373 | } |
2374 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
2375 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
2376 | |
2377 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 2378 | bits, elt_type); |
14f9c5c9 AS |
2379 | return v; |
2380 | } | |
2381 | ||
4c4b4cd2 | 2382 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
2383 | |
2384 | static int | |
d2e4a39e | 2385 | has_negatives (struct type *type) |
14f9c5c9 | 2386 | { |
d2e4a39e AS |
2387 | switch (TYPE_CODE (type)) |
2388 | { | |
2389 | default: | |
2390 | return 0; | |
2391 | case TYPE_CODE_INT: | |
2392 | return !TYPE_UNSIGNED (type); | |
2393 | case TYPE_CODE_RANGE: | |
2394 | return TYPE_LOW_BOUND (type) < 0; | |
2395 | } | |
14f9c5c9 | 2396 | } |
d2e4a39e | 2397 | |
f93fca70 | 2398 | /* With SRC being a buffer containing BIT_SIZE bits of data at BIT_OFFSET, |
5b639dea | 2399 | unpack that data into UNPACKED. UNPACKED_LEN is the size in bytes of |
f93fca70 | 2400 | the unpacked buffer. |
14f9c5c9 | 2401 | |
5b639dea JB |
2402 | The size of the unpacked buffer (UNPACKED_LEN) is expected to be large |
2403 | enough to contain at least BIT_OFFSET bits. If not, an error is raised. | |
2404 | ||
f93fca70 JB |
2405 | IS_BIG_ENDIAN is nonzero if the data is stored in big endian mode, |
2406 | zero otherwise. | |
14f9c5c9 | 2407 | |
f93fca70 | 2408 | IS_SIGNED_TYPE is nonzero if the data corresponds to a signed type. |
a1c95e6b | 2409 | |
f93fca70 JB |
2410 | IS_SCALAR is nonzero if the data corresponds to a signed type. */ |
2411 | ||
2412 | static void | |
2413 | ada_unpack_from_contents (const gdb_byte *src, int bit_offset, int bit_size, | |
2414 | gdb_byte *unpacked, int unpacked_len, | |
2415 | int is_big_endian, int is_signed_type, | |
2416 | int is_scalar) | |
2417 | { | |
a1c95e6b JB |
2418 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
2419 | int src_idx; /* Index into the source area */ | |
2420 | int src_bytes_left; /* Number of source bytes left to process. */ | |
2421 | int srcBitsLeft; /* Number of source bits left to move */ | |
2422 | int unusedLS; /* Number of bits in next significant | |
2423 | byte of source that are unused */ | |
2424 | ||
a1c95e6b JB |
2425 | int unpacked_idx; /* Index into the unpacked buffer */ |
2426 | int unpacked_bytes_left; /* Number of bytes left to set in unpacked. */ | |
2427 | ||
4c4b4cd2 | 2428 | unsigned long accum; /* Staging area for bits being transferred */ |
a1c95e6b | 2429 | int accumSize; /* Number of meaningful bits in accum */ |
14f9c5c9 | 2430 | unsigned char sign; |
a1c95e6b | 2431 | |
4c4b4cd2 PH |
2432 | /* Transmit bytes from least to most significant; delta is the direction |
2433 | the indices move. */ | |
f93fca70 | 2434 | int delta = is_big_endian ? -1 : 1; |
14f9c5c9 | 2435 | |
5b639dea JB |
2436 | /* Make sure that unpacked is large enough to receive the BIT_SIZE |
2437 | bits from SRC. .*/ | |
2438 | if ((bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT > unpacked_len) | |
2439 | error (_("Cannot unpack %d bits into buffer of %d bytes"), | |
2440 | bit_size, unpacked_len); | |
2441 | ||
14f9c5c9 | 2442 | srcBitsLeft = bit_size; |
086ca51f | 2443 | src_bytes_left = src_len; |
f93fca70 | 2444 | unpacked_bytes_left = unpacked_len; |
14f9c5c9 | 2445 | sign = 0; |
f93fca70 JB |
2446 | |
2447 | if (is_big_endian) | |
14f9c5c9 | 2448 | { |
086ca51f | 2449 | src_idx = src_len - 1; |
f93fca70 JB |
2450 | if (is_signed_type |
2451 | && ((src[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2452 | sign = ~0; |
d2e4a39e AS |
2453 | |
2454 | unusedLS = | |
4c4b4cd2 PH |
2455 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2456 | % HOST_CHAR_BIT; | |
14f9c5c9 | 2457 | |
f93fca70 JB |
2458 | if (is_scalar) |
2459 | { | |
2460 | accumSize = 0; | |
2461 | unpacked_idx = unpacked_len - 1; | |
2462 | } | |
2463 | else | |
2464 | { | |
4c4b4cd2 PH |
2465 | /* Non-scalar values must be aligned at a byte boundary... */ |
2466 | accumSize = | |
2467 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2468 | /* ... And are placed at the beginning (most-significant) bytes | |
2469 | of the target. */ | |
086ca51f JB |
2470 | unpacked_idx = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
2471 | unpacked_bytes_left = unpacked_idx + 1; | |
f93fca70 | 2472 | } |
14f9c5c9 | 2473 | } |
d2e4a39e | 2474 | else |
14f9c5c9 AS |
2475 | { |
2476 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2477 | ||
086ca51f | 2478 | src_idx = unpacked_idx = 0; |
14f9c5c9 AS |
2479 | unusedLS = bit_offset; |
2480 | accumSize = 0; | |
2481 | ||
f93fca70 | 2482 | if (is_signed_type && (src[src_len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2483 | sign = ~0; |
14f9c5c9 | 2484 | } |
d2e4a39e | 2485 | |
14f9c5c9 | 2486 | accum = 0; |
086ca51f | 2487 | while (src_bytes_left > 0) |
14f9c5c9 AS |
2488 | { |
2489 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2490 | part of the value. */ |
d2e4a39e | 2491 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2492 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2493 | 1; | |
2494 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2495 | unsigned int signMask = sign & ~unusedMSMask; |
5b4ee69b | 2496 | |
d2e4a39e | 2497 | accum |= |
086ca51f | 2498 | (((src[src_idx] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2499 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2500 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 | 2501 | { |
db297a65 | 2502 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
4c4b4cd2 PH |
2503 | accumSize -= HOST_CHAR_BIT; |
2504 | accum >>= HOST_CHAR_BIT; | |
086ca51f JB |
2505 | unpacked_bytes_left -= 1; |
2506 | unpacked_idx += delta; | |
4c4b4cd2 | 2507 | } |
14f9c5c9 AS |
2508 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2509 | unusedLS = 0; | |
086ca51f JB |
2510 | src_bytes_left -= 1; |
2511 | src_idx += delta; | |
14f9c5c9 | 2512 | } |
086ca51f | 2513 | while (unpacked_bytes_left > 0) |
14f9c5c9 AS |
2514 | { |
2515 | accum |= sign << accumSize; | |
db297a65 | 2516 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
14f9c5c9 | 2517 | accumSize -= HOST_CHAR_BIT; |
9cd4d857 JB |
2518 | if (accumSize < 0) |
2519 | accumSize = 0; | |
14f9c5c9 | 2520 | accum >>= HOST_CHAR_BIT; |
086ca51f JB |
2521 | unpacked_bytes_left -= 1; |
2522 | unpacked_idx += delta; | |
14f9c5c9 | 2523 | } |
f93fca70 JB |
2524 | } |
2525 | ||
2526 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2527 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2528 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
2529 | assigning through the result will set the field fetched from. | |
2530 | VALADDR is ignored unless OBJ is NULL, in which case, | |
2531 | VALADDR+OFFSET must address the start of storage containing the | |
2532 | packed value. The value returned in this case is never an lval. | |
2533 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
2534 | ||
2535 | struct value * | |
2536 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, | |
2537 | long offset, int bit_offset, int bit_size, | |
2538 | struct type *type) | |
2539 | { | |
2540 | struct value *v; | |
bfb1c796 | 2541 | const gdb_byte *src; /* First byte containing data to unpack */ |
f93fca70 | 2542 | gdb_byte *unpacked; |
220475ed | 2543 | const int is_scalar = is_scalar_type (type); |
d0a9e810 | 2544 | const int is_big_endian = gdbarch_bits_big_endian (get_type_arch (type)); |
d5722aa2 | 2545 | gdb::byte_vector staging; |
f93fca70 JB |
2546 | |
2547 | type = ada_check_typedef (type); | |
2548 | ||
d0a9e810 | 2549 | if (obj == NULL) |
bfb1c796 | 2550 | src = valaddr + offset; |
d0a9e810 | 2551 | else |
bfb1c796 | 2552 | src = value_contents (obj) + offset; |
d0a9e810 JB |
2553 | |
2554 | if (is_dynamic_type (type)) | |
2555 | { | |
2556 | /* The length of TYPE might by dynamic, so we need to resolve | |
2557 | TYPE in order to know its actual size, which we then use | |
2558 | to create the contents buffer of the value we return. | |
2559 | The difficulty is that the data containing our object is | |
2560 | packed, and therefore maybe not at a byte boundary. So, what | |
2561 | we do, is unpack the data into a byte-aligned buffer, and then | |
2562 | use that buffer as our object's value for resolving the type. */ | |
d5722aa2 PA |
2563 | int staging_len = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
2564 | staging.resize (staging_len); | |
d0a9e810 JB |
2565 | |
2566 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
d5722aa2 | 2567 | staging.data (), staging.size (), |
d0a9e810 JB |
2568 | is_big_endian, has_negatives (type), |
2569 | is_scalar); | |
d5722aa2 | 2570 | type = resolve_dynamic_type (type, staging.data (), 0); |
0cafa88c JB |
2571 | if (TYPE_LENGTH (type) < (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT) |
2572 | { | |
2573 | /* This happens when the length of the object is dynamic, | |
2574 | and is actually smaller than the space reserved for it. | |
2575 | For instance, in an array of variant records, the bit_size | |
2576 | we're given is the array stride, which is constant and | |
2577 | normally equal to the maximum size of its element. | |
2578 | But, in reality, each element only actually spans a portion | |
2579 | of that stride. */ | |
2580 | bit_size = TYPE_LENGTH (type) * HOST_CHAR_BIT; | |
2581 | } | |
d0a9e810 JB |
2582 | } |
2583 | ||
f93fca70 JB |
2584 | if (obj == NULL) |
2585 | { | |
2586 | v = allocate_value (type); | |
bfb1c796 | 2587 | src = valaddr + offset; |
f93fca70 JB |
2588 | } |
2589 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) | |
2590 | { | |
0cafa88c | 2591 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
bfb1c796 | 2592 | gdb_byte *buf; |
0cafa88c | 2593 | |
f93fca70 | 2594 | v = value_at (type, value_address (obj) + offset); |
bfb1c796 PA |
2595 | buf = (gdb_byte *) alloca (src_len); |
2596 | read_memory (value_address (v), buf, src_len); | |
2597 | src = buf; | |
f93fca70 JB |
2598 | } |
2599 | else | |
2600 | { | |
2601 | v = allocate_value (type); | |
bfb1c796 | 2602 | src = value_contents (obj) + offset; |
f93fca70 JB |
2603 | } |
2604 | ||
2605 | if (obj != NULL) | |
2606 | { | |
2607 | long new_offset = offset; | |
2608 | ||
2609 | set_value_component_location (v, obj); | |
2610 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); | |
2611 | set_value_bitsize (v, bit_size); | |
2612 | if (value_bitpos (v) >= HOST_CHAR_BIT) | |
2613 | { | |
2614 | ++new_offset; | |
2615 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); | |
2616 | } | |
2617 | set_value_offset (v, new_offset); | |
2618 | ||
2619 | /* Also set the parent value. This is needed when trying to | |
2620 | assign a new value (in inferior memory). */ | |
2621 | set_value_parent (v, obj); | |
2622 | } | |
2623 | else | |
2624 | set_value_bitsize (v, bit_size); | |
bfb1c796 | 2625 | unpacked = value_contents_writeable (v); |
f93fca70 JB |
2626 | |
2627 | if (bit_size == 0) | |
2628 | { | |
2629 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2630 | return v; | |
2631 | } | |
2632 | ||
d5722aa2 | 2633 | if (staging.size () == TYPE_LENGTH (type)) |
f93fca70 | 2634 | { |
d0a9e810 JB |
2635 | /* Small short-cut: If we've unpacked the data into a buffer |
2636 | of the same size as TYPE's length, then we can reuse that, | |
2637 | instead of doing the unpacking again. */ | |
d5722aa2 | 2638 | memcpy (unpacked, staging.data (), staging.size ()); |
f93fca70 | 2639 | } |
d0a9e810 JB |
2640 | else |
2641 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
2642 | unpacked, TYPE_LENGTH (type), | |
2643 | is_big_endian, has_negatives (type), is_scalar); | |
f93fca70 | 2644 | |
14f9c5c9 AS |
2645 | return v; |
2646 | } | |
d2e4a39e | 2647 | |
14f9c5c9 AS |
2648 | /* Store the contents of FROMVAL into the location of TOVAL. |
2649 | Return a new value with the location of TOVAL and contents of | |
2650 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2651 | floating-point or non-scalar types. */ |
14f9c5c9 | 2652 | |
d2e4a39e AS |
2653 | static struct value * |
2654 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2655 | { |
df407dfe AC |
2656 | struct type *type = value_type (toval); |
2657 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2658 | |
52ce6436 PH |
2659 | toval = ada_coerce_ref (toval); |
2660 | fromval = ada_coerce_ref (fromval); | |
2661 | ||
2662 | if (ada_is_direct_array_type (value_type (toval))) | |
2663 | toval = ada_coerce_to_simple_array (toval); | |
2664 | if (ada_is_direct_array_type (value_type (fromval))) | |
2665 | fromval = ada_coerce_to_simple_array (fromval); | |
2666 | ||
88e3b34b | 2667 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2668 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2669 | |
d2e4a39e | 2670 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2671 | && bits > 0 |
d2e4a39e | 2672 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2673 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2674 | { |
df407dfe AC |
2675 | int len = (value_bitpos (toval) |
2676 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2677 | int from_size; |
224c3ddb | 2678 | gdb_byte *buffer = (gdb_byte *) alloca (len); |
d2e4a39e | 2679 | struct value *val; |
42ae5230 | 2680 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 AS |
2681 | |
2682 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2683 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2684 | |
52ce6436 | 2685 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2686 | from_size = value_bitsize (fromval); |
2687 | if (from_size == 0) | |
2688 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
d48e62f4 TT |
2689 | |
2690 | const int is_big_endian = gdbarch_bits_big_endian (get_type_arch (type)); | |
2691 | ULONGEST from_offset = 0; | |
2692 | if (is_big_endian && is_scalar_type (value_type (fromval))) | |
2693 | from_offset = from_size - bits; | |
2694 | copy_bitwise (buffer, value_bitpos (toval), | |
2695 | value_contents (fromval), from_offset, | |
2696 | bits, is_big_endian); | |
972daa01 | 2697 | write_memory_with_notification (to_addr, buffer, len); |
8cebebb9 | 2698 | |
14f9c5c9 | 2699 | val = value_copy (toval); |
0fd88904 | 2700 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2701 | TYPE_LENGTH (type)); |
04624583 | 2702 | deprecated_set_value_type (val, type); |
d2e4a39e | 2703 | |
14f9c5c9 AS |
2704 | return val; |
2705 | } | |
2706 | ||
2707 | return value_assign (toval, fromval); | |
2708 | } | |
2709 | ||
2710 | ||
7c512744 JB |
2711 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2712 | CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2713 | CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2714 | COMPONENT, and not the inferior's memory. The current contents | |
2715 | of COMPONENT are ignored. | |
2716 | ||
2717 | Although not part of the initial design, this function also works | |
2718 | when CONTAINER and COMPONENT are not_lval's: it works as if CONTAINER | |
2719 | had a null address, and COMPONENT had an address which is equal to | |
2720 | its offset inside CONTAINER. */ | |
2721 | ||
52ce6436 PH |
2722 | static void |
2723 | value_assign_to_component (struct value *container, struct value *component, | |
2724 | struct value *val) | |
2725 | { | |
2726 | LONGEST offset_in_container = | |
42ae5230 | 2727 | (LONGEST) (value_address (component) - value_address (container)); |
7c512744 | 2728 | int bit_offset_in_container = |
52ce6436 PH |
2729 | value_bitpos (component) - value_bitpos (container); |
2730 | int bits; | |
7c512744 | 2731 | |
52ce6436 PH |
2732 | val = value_cast (value_type (component), val); |
2733 | ||
2734 | if (value_bitsize (component) == 0) | |
2735 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2736 | else | |
2737 | bits = value_bitsize (component); | |
2738 | ||
50810684 | 2739 | if (gdbarch_bits_big_endian (get_type_arch (value_type (container)))) |
2a62dfa9 JB |
2740 | { |
2741 | int src_offset; | |
2742 | ||
2743 | if (is_scalar_type (check_typedef (value_type (component)))) | |
2744 | src_offset | |
2745 | = TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits; | |
2746 | else | |
2747 | src_offset = 0; | |
a99bc3d2 JB |
2748 | copy_bitwise (value_contents_writeable (container) + offset_in_container, |
2749 | value_bitpos (container) + bit_offset_in_container, | |
2750 | value_contents (val), src_offset, bits, 1); | |
2a62dfa9 | 2751 | } |
52ce6436 | 2752 | else |
a99bc3d2 JB |
2753 | copy_bitwise (value_contents_writeable (container) + offset_in_container, |
2754 | value_bitpos (container) + bit_offset_in_container, | |
2755 | value_contents (val), 0, bits, 0); | |
7c512744 JB |
2756 | } |
2757 | ||
736ade86 XR |
2758 | /* Determine if TYPE is an access to an unconstrained array. */ |
2759 | ||
d91e9ea8 | 2760 | bool |
736ade86 XR |
2761 | ada_is_access_to_unconstrained_array (struct type *type) |
2762 | { | |
2763 | return (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
2764 | && is_thick_pntr (ada_typedef_target_type (type))); | |
2765 | } | |
2766 | ||
4c4b4cd2 PH |
2767 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2768 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2769 | thereto. */ |
2770 | ||
d2e4a39e AS |
2771 | struct value * |
2772 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2773 | { |
2774 | int k; | |
d2e4a39e AS |
2775 | struct value *elt; |
2776 | struct type *elt_type; | |
14f9c5c9 AS |
2777 | |
2778 | elt = ada_coerce_to_simple_array (arr); | |
2779 | ||
df407dfe | 2780 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2781 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2782 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2783 | return value_subscript_packed (elt, arity, ind); | |
2784 | ||
2785 | for (k = 0; k < arity; k += 1) | |
2786 | { | |
b9c50e9a XR |
2787 | struct type *saved_elt_type = TYPE_TARGET_TYPE (elt_type); |
2788 | ||
14f9c5c9 | 2789 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) |
323e0a4a | 2790 | error (_("too many subscripts (%d expected)"), k); |
b9c50e9a | 2791 | |
2497b498 | 2792 | elt = value_subscript (elt, pos_atr (ind[k])); |
b9c50e9a XR |
2793 | |
2794 | if (ada_is_access_to_unconstrained_array (saved_elt_type) | |
2795 | && TYPE_CODE (value_type (elt)) != TYPE_CODE_TYPEDEF) | |
2796 | { | |
2797 | /* The element is a typedef to an unconstrained array, | |
2798 | except that the value_subscript call stripped the | |
2799 | typedef layer. The typedef layer is GNAT's way to | |
2800 | specify that the element is, at the source level, an | |
2801 | access to the unconstrained array, rather than the | |
2802 | unconstrained array. So, we need to restore that | |
2803 | typedef layer, which we can do by forcing the element's | |
2804 | type back to its original type. Otherwise, the returned | |
2805 | value is going to be printed as the array, rather | |
2806 | than as an access. Another symptom of the same issue | |
2807 | would be that an expression trying to dereference the | |
2808 | element would also be improperly rejected. */ | |
2809 | deprecated_set_value_type (elt, saved_elt_type); | |
2810 | } | |
2811 | ||
2812 | elt_type = ada_check_typedef (value_type (elt)); | |
14f9c5c9 | 2813 | } |
b9c50e9a | 2814 | |
14f9c5c9 AS |
2815 | return elt; |
2816 | } | |
2817 | ||
deede10c JB |
2818 | /* Assuming ARR is a pointer to a GDB array, the value of the element |
2819 | of *ARR at the ARITY indices given in IND. | |
919e6dbe PMR |
2820 | Does not read the entire array into memory. |
2821 | ||
2822 | Note: Unlike what one would expect, this function is used instead of | |
2823 | ada_value_subscript for basically all non-packed array types. The reason | |
2824 | for this is that a side effect of doing our own pointer arithmetics instead | |
2825 | of relying on value_subscript is that there is no implicit typedef peeling. | |
2826 | This is important for arrays of array accesses, where it allows us to | |
2827 | preserve the fact that the array's element is an array access, where the | |
2828 | access part os encoded in a typedef layer. */ | |
14f9c5c9 | 2829 | |
2c0b251b | 2830 | static struct value * |
deede10c | 2831 | ada_value_ptr_subscript (struct value *arr, int arity, struct value **ind) |
14f9c5c9 AS |
2832 | { |
2833 | int k; | |
919e6dbe | 2834 | struct value *array_ind = ada_value_ind (arr); |
deede10c | 2835 | struct type *type |
919e6dbe PMR |
2836 | = check_typedef (value_enclosing_type (array_ind)); |
2837 | ||
2838 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
2839 | && TYPE_FIELD_BITSIZE (type, 0) > 0) | |
2840 | return value_subscript_packed (array_ind, arity, ind); | |
14f9c5c9 AS |
2841 | |
2842 | for (k = 0; k < arity; k += 1) | |
2843 | { | |
2844 | LONGEST lwb, upb; | |
aa715135 | 2845 | struct value *lwb_value; |
14f9c5c9 AS |
2846 | |
2847 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2848 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2849 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2850 | value_copy (arr)); |
14f9c5c9 | 2851 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
aa715135 JG |
2852 | lwb_value = value_from_longest (value_type(ind[k]), lwb); |
2853 | arr = value_ptradd (arr, pos_atr (ind[k]) - pos_atr (lwb_value)); | |
14f9c5c9 AS |
2854 | type = TYPE_TARGET_TYPE (type); |
2855 | } | |
2856 | ||
2857 | return value_ind (arr); | |
2858 | } | |
2859 | ||
0b5d8877 | 2860 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
aa715135 JG |
2861 | actual type of ARRAY_PTR is ignored), returns the Ada slice of |
2862 | HIGH'Pos-LOW'Pos+1 elements starting at index LOW. The lower bound of | |
2863 | this array is LOW, as per Ada rules. */ | |
0b5d8877 | 2864 | static struct value * |
f5938064 JG |
2865 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
2866 | int low, int high) | |
0b5d8877 | 2867 | { |
b0dd7688 | 2868 | struct type *type0 = ada_check_typedef (type); |
aa715135 | 2869 | struct type *base_index_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type0)); |
0c9c3474 | 2870 | struct type *index_type |
aa715135 | 2871 | = create_static_range_type (NULL, base_index_type, low, high); |
9fe561ab JB |
2872 | struct type *slice_type = create_array_type_with_stride |
2873 | (NULL, TYPE_TARGET_TYPE (type0), index_type, | |
2874 | get_dyn_prop (DYN_PROP_BYTE_STRIDE, type0), | |
2875 | TYPE_FIELD_BITSIZE (type0, 0)); | |
aa715135 JG |
2876 | int base_low = ada_discrete_type_low_bound (TYPE_INDEX_TYPE (type0)); |
2877 | LONGEST base_low_pos, low_pos; | |
2878 | CORE_ADDR base; | |
2879 | ||
2880 | if (!discrete_position (base_index_type, low, &low_pos) | |
2881 | || !discrete_position (base_index_type, base_low, &base_low_pos)) | |
2882 | { | |
2883 | warning (_("unable to get positions in slice, use bounds instead")); | |
2884 | low_pos = low; | |
2885 | base_low_pos = base_low; | |
2886 | } | |
5b4ee69b | 2887 | |
aa715135 JG |
2888 | base = value_as_address (array_ptr) |
2889 | + ((low_pos - base_low_pos) | |
2890 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type0))); | |
f5938064 | 2891 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
2892 | } |
2893 | ||
2894 | ||
2895 | static struct value * | |
2896 | ada_value_slice (struct value *array, int low, int high) | |
2897 | { | |
b0dd7688 | 2898 | struct type *type = ada_check_typedef (value_type (array)); |
aa715135 | 2899 | struct type *base_index_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
0c9c3474 SA |
2900 | struct type *index_type |
2901 | = create_static_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); | |
9fe561ab JB |
2902 | struct type *slice_type = create_array_type_with_stride |
2903 | (NULL, TYPE_TARGET_TYPE (type), index_type, | |
2904 | get_dyn_prop (DYN_PROP_BYTE_STRIDE, type), | |
2905 | TYPE_FIELD_BITSIZE (type, 0)); | |
aa715135 | 2906 | LONGEST low_pos, high_pos; |
5b4ee69b | 2907 | |
aa715135 JG |
2908 | if (!discrete_position (base_index_type, low, &low_pos) |
2909 | || !discrete_position (base_index_type, high, &high_pos)) | |
2910 | { | |
2911 | warning (_("unable to get positions in slice, use bounds instead")); | |
2912 | low_pos = low; | |
2913 | high_pos = high; | |
2914 | } | |
2915 | ||
2916 | return value_cast (slice_type, | |
2917 | value_slice (array, low, high_pos - low_pos + 1)); | |
0b5d8877 PH |
2918 | } |
2919 | ||
14f9c5c9 AS |
2920 | /* If type is a record type in the form of a standard GNAT array |
2921 | descriptor, returns the number of dimensions for type. If arr is a | |
2922 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2923 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2924 | |
2925 | int | |
d2e4a39e | 2926 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2927 | { |
2928 | int arity; | |
2929 | ||
2930 | if (type == NULL) | |
2931 | return 0; | |
2932 | ||
2933 | type = desc_base_type (type); | |
2934 | ||
2935 | arity = 0; | |
d2e4a39e | 2936 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2937 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2938 | else |
2939 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2940 | { |
4c4b4cd2 | 2941 | arity += 1; |
61ee279c | 2942 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2943 | } |
d2e4a39e | 2944 | |
14f9c5c9 AS |
2945 | return arity; |
2946 | } | |
2947 | ||
2948 | /* If TYPE is a record type in the form of a standard GNAT array | |
2949 | descriptor or a simple array type, returns the element type for | |
2950 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2951 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2952 | |
d2e4a39e AS |
2953 | struct type * |
2954 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2955 | { |
2956 | type = desc_base_type (type); | |
2957 | ||
d2e4a39e | 2958 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2959 | { |
2960 | int k; | |
d2e4a39e | 2961 | struct type *p_array_type; |
14f9c5c9 | 2962 | |
556bdfd4 | 2963 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
2964 | |
2965 | k = ada_array_arity (type); | |
2966 | if (k == 0) | |
4c4b4cd2 | 2967 | return NULL; |
d2e4a39e | 2968 | |
4c4b4cd2 | 2969 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2970 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2971 | k = nindices; |
d2e4a39e | 2972 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2973 | { |
61ee279c | 2974 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2975 | k -= 1; |
2976 | } | |
14f9c5c9 AS |
2977 | return p_array_type; |
2978 | } | |
2979 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2980 | { | |
2981 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2982 | { |
2983 | type = TYPE_TARGET_TYPE (type); | |
2984 | nindices -= 1; | |
2985 | } | |
14f9c5c9 AS |
2986 | return type; |
2987 | } | |
2988 | ||
2989 | return NULL; | |
2990 | } | |
2991 | ||
4c4b4cd2 | 2992 | /* The type of nth index in arrays of given type (n numbering from 1). |
dd19d49e UW |
2993 | Does not examine memory. Throws an error if N is invalid or TYPE |
2994 | is not an array type. NAME is the name of the Ada attribute being | |
2995 | evaluated ('range, 'first, 'last, or 'length); it is used in building | |
2996 | the error message. */ | |
14f9c5c9 | 2997 | |
1eea4ebd UW |
2998 | static struct type * |
2999 | ada_index_type (struct type *type, int n, const char *name) | |
14f9c5c9 | 3000 | { |
4c4b4cd2 PH |
3001 | struct type *result_type; |
3002 | ||
14f9c5c9 AS |
3003 | type = desc_base_type (type); |
3004 | ||
1eea4ebd UW |
3005 | if (n < 0 || n > ada_array_arity (type)) |
3006 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 3007 | |
4c4b4cd2 | 3008 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
3009 | { |
3010 | int i; | |
3011 | ||
3012 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 | 3013 | type = TYPE_TARGET_TYPE (type); |
262452ec | 3014 | result_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
4c4b4cd2 PH |
3015 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
3016 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 | 3017 | perhaps stabsread.c would make more sense. */ |
1eea4ebd UW |
3018 | if (result_type && TYPE_CODE (result_type) == TYPE_CODE_UNDEF) |
3019 | result_type = NULL; | |
14f9c5c9 | 3020 | } |
d2e4a39e | 3021 | else |
1eea4ebd UW |
3022 | { |
3023 | result_type = desc_index_type (desc_bounds_type (type), n); | |
3024 | if (result_type == NULL) | |
3025 | error (_("attempt to take bound of something that is not an array")); | |
3026 | } | |
3027 | ||
3028 | return result_type; | |
14f9c5c9 AS |
3029 | } |
3030 | ||
3031 | /* Given that arr is an array type, returns the lower bound of the | |
3032 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 3033 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
3034 | array-descriptor type. It works for other arrays with bounds supplied |
3035 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 3036 | |
abb68b3e | 3037 | static LONGEST |
fb5e3d5c | 3038 | ada_array_bound_from_type (struct type *arr_type, int n, int which) |
14f9c5c9 | 3039 | { |
8a48ac95 | 3040 | struct type *type, *index_type_desc, *index_type; |
1ce677a4 | 3041 | int i; |
262452ec JK |
3042 | |
3043 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 | 3044 | |
ad82864c JB |
3045 | if (ada_is_constrained_packed_array_type (arr_type)) |
3046 | arr_type = decode_constrained_packed_array_type (arr_type); | |
14f9c5c9 | 3047 | |
4c4b4cd2 | 3048 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3049 | return (LONGEST) - which; |
14f9c5c9 AS |
3050 | |
3051 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
3052 | type = TYPE_TARGET_TYPE (arr_type); | |
3053 | else | |
3054 | type = arr_type; | |
3055 | ||
bafffb51 JB |
3056 | if (TYPE_FIXED_INSTANCE (type)) |
3057 | { | |
3058 | /* The array has already been fixed, so we do not need to | |
3059 | check the parallel ___XA type again. That encoding has | |
3060 | already been applied, so ignore it now. */ | |
3061 | index_type_desc = NULL; | |
3062 | } | |
3063 | else | |
3064 | { | |
3065 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
3066 | ada_fixup_array_indexes_type (index_type_desc); | |
3067 | } | |
3068 | ||
262452ec | 3069 | if (index_type_desc != NULL) |
28c85d6c JB |
3070 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, n - 1), |
3071 | NULL); | |
262452ec | 3072 | else |
8a48ac95 JB |
3073 | { |
3074 | struct type *elt_type = check_typedef (type); | |
3075 | ||
3076 | for (i = 1; i < n; i++) | |
3077 | elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
3078 | ||
3079 | index_type = TYPE_INDEX_TYPE (elt_type); | |
3080 | } | |
262452ec | 3081 | |
43bbcdc2 PH |
3082 | return |
3083 | (LONGEST) (which == 0 | |
3084 | ? ada_discrete_type_low_bound (index_type) | |
3085 | : ada_discrete_type_high_bound (index_type)); | |
14f9c5c9 AS |
3086 | } |
3087 | ||
3088 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
3089 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
3090 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 3091 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 3092 | |
1eea4ebd | 3093 | static LONGEST |
4dc81987 | 3094 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 3095 | { |
eb479039 JB |
3096 | struct type *arr_type; |
3097 | ||
3098 | if (TYPE_CODE (check_typedef (value_type (arr))) == TYPE_CODE_PTR) | |
3099 | arr = value_ind (arr); | |
3100 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3101 | |
ad82864c JB |
3102 | if (ada_is_constrained_packed_array_type (arr_type)) |
3103 | return ada_array_bound (decode_constrained_packed_array (arr), n, which); | |
4c4b4cd2 | 3104 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3105 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 3106 | else |
1eea4ebd | 3107 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
3108 | } |
3109 | ||
3110 | /* Given that arr is an array value, returns the length of the | |
3111 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
3112 | supplied by run-time quantities other than discriminants. |
3113 | Does not work for arrays indexed by enumeration types with representation | |
3114 | clauses at the moment. */ | |
14f9c5c9 | 3115 | |
1eea4ebd | 3116 | static LONGEST |
d2e4a39e | 3117 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 3118 | { |
aa715135 JG |
3119 | struct type *arr_type, *index_type; |
3120 | int low, high; | |
eb479039 JB |
3121 | |
3122 | if (TYPE_CODE (check_typedef (value_type (arr))) == TYPE_CODE_PTR) | |
3123 | arr = value_ind (arr); | |
3124 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3125 | |
ad82864c JB |
3126 | if (ada_is_constrained_packed_array_type (arr_type)) |
3127 | return ada_array_length (decode_constrained_packed_array (arr), n); | |
14f9c5c9 | 3128 | |
4c4b4cd2 | 3129 | if (ada_is_simple_array_type (arr_type)) |
aa715135 JG |
3130 | { |
3131 | low = ada_array_bound_from_type (arr_type, n, 0); | |
3132 | high = ada_array_bound_from_type (arr_type, n, 1); | |
3133 | } | |
14f9c5c9 | 3134 | else |
aa715135 JG |
3135 | { |
3136 | low = value_as_long (desc_one_bound (desc_bounds (arr), n, 0)); | |
3137 | high = value_as_long (desc_one_bound (desc_bounds (arr), n, 1)); | |
3138 | } | |
3139 | ||
f168693b | 3140 | arr_type = check_typedef (arr_type); |
7150d33c | 3141 | index_type = ada_index_type (arr_type, n, "length"); |
aa715135 JG |
3142 | if (index_type != NULL) |
3143 | { | |
3144 | struct type *base_type; | |
3145 | if (TYPE_CODE (index_type) == TYPE_CODE_RANGE) | |
3146 | base_type = TYPE_TARGET_TYPE (index_type); | |
3147 | else | |
3148 | base_type = index_type; | |
3149 | ||
3150 | low = pos_atr (value_from_longest (base_type, low)); | |
3151 | high = pos_atr (value_from_longest (base_type, high)); | |
3152 | } | |
3153 | return high - low + 1; | |
4c4b4cd2 PH |
3154 | } |
3155 | ||
bff8c71f TT |
3156 | /* An array whose type is that of ARR_TYPE (an array type), with |
3157 | bounds LOW to HIGH, but whose contents are unimportant. If HIGH is | |
3158 | less than LOW, then LOW-1 is used. */ | |
4c4b4cd2 PH |
3159 | |
3160 | static struct value * | |
bff8c71f | 3161 | empty_array (struct type *arr_type, int low, int high) |
4c4b4cd2 | 3162 | { |
b0dd7688 | 3163 | struct type *arr_type0 = ada_check_typedef (arr_type); |
0c9c3474 SA |
3164 | struct type *index_type |
3165 | = create_static_range_type | |
bff8c71f TT |
3166 | (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type0)), low, |
3167 | high < low ? low - 1 : high); | |
b0dd7688 | 3168 | struct type *elt_type = ada_array_element_type (arr_type0, 1); |
5b4ee69b | 3169 | |
0b5d8877 | 3170 | return allocate_value (create_array_type (NULL, elt_type, index_type)); |
14f9c5c9 | 3171 | } |
14f9c5c9 | 3172 | \f |
d2e4a39e | 3173 | |
4c4b4cd2 | 3174 | /* Name resolution */ |
14f9c5c9 | 3175 | |
4c4b4cd2 PH |
3176 | /* The "decoded" name for the user-definable Ada operator corresponding |
3177 | to OP. */ | |
14f9c5c9 | 3178 | |
d2e4a39e | 3179 | static const char * |
4c4b4cd2 | 3180 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
3181 | { |
3182 | int i; | |
3183 | ||
4c4b4cd2 | 3184 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
3185 | { |
3186 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 3187 | return ada_opname_table[i].decoded; |
14f9c5c9 | 3188 | } |
323e0a4a | 3189 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
3190 | } |
3191 | ||
3192 | ||
4c4b4cd2 PH |
3193 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
3194 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
3195 | undefined namespace) and converts operators that are | |
3196 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
3197 | non-null, it provides a preferred result type [at the moment, only |
3198 | type void has any effect---causing procedures to be preferred over | |
3199 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 3200 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 3201 | |
4c4b4cd2 | 3202 | static void |
699bd4cf TT |
3203 | resolve (expression_up *expp, int void_context_p, int parse_completion, |
3204 | innermost_block_tracker *tracker) | |
14f9c5c9 | 3205 | { |
30b15541 UW |
3206 | struct type *context_type = NULL; |
3207 | int pc = 0; | |
3208 | ||
3209 | if (void_context_p) | |
3210 | context_type = builtin_type ((*expp)->gdbarch)->builtin_void; | |
3211 | ||
699bd4cf | 3212 | resolve_subexp (expp, &pc, 1, context_type, parse_completion, tracker); |
14f9c5c9 AS |
3213 | } |
3214 | ||
4c4b4cd2 PH |
3215 | /* Resolve the operator of the subexpression beginning at |
3216 | position *POS of *EXPP. "Resolving" consists of replacing | |
3217 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
3218 | with their resolutions, replacing built-in operators with | |
3219 | function calls to user-defined operators, where appropriate, and, | |
3220 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
3221 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
3222 | are as in ada_resolve, above. */ | |
14f9c5c9 | 3223 | |
d2e4a39e | 3224 | static struct value * |
e9d9f57e | 3225 | resolve_subexp (expression_up *expp, int *pos, int deprocedure_p, |
699bd4cf TT |
3226 | struct type *context_type, int parse_completion, |
3227 | innermost_block_tracker *tracker) | |
14f9c5c9 AS |
3228 | { |
3229 | int pc = *pos; | |
3230 | int i; | |
4c4b4cd2 | 3231 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 3232 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
3233 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
3234 | int nargs; /* Number of operands. */ | |
52ce6436 | 3235 | int oplen; |
14f9c5c9 AS |
3236 | |
3237 | argvec = NULL; | |
3238 | nargs = 0; | |
e9d9f57e | 3239 | exp = expp->get (); |
14f9c5c9 | 3240 | |
52ce6436 PH |
3241 | /* Pass one: resolve operands, saving their types and updating *pos, |
3242 | if needed. */ | |
14f9c5c9 AS |
3243 | switch (op) |
3244 | { | |
4c4b4cd2 PH |
3245 | case OP_FUNCALL: |
3246 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
3247 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
3248 | *pos += 7; | |
4c4b4cd2 PH |
3249 | else |
3250 | { | |
3251 | *pos += 3; | |
699bd4cf | 3252 | resolve_subexp (expp, pos, 0, NULL, parse_completion, tracker); |
4c4b4cd2 PH |
3253 | } |
3254 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
3255 | break; |
3256 | ||
14f9c5c9 | 3257 | case UNOP_ADDR: |
4c4b4cd2 | 3258 | *pos += 1; |
699bd4cf | 3259 | resolve_subexp (expp, pos, 0, NULL, parse_completion, tracker); |
4c4b4cd2 PH |
3260 | break; |
3261 | ||
52ce6436 PH |
3262 | case UNOP_QUAL: |
3263 | *pos += 3; | |
2a612529 | 3264 | resolve_subexp (expp, pos, 1, check_typedef (exp->elts[pc + 1].type), |
699bd4cf | 3265 | parse_completion, tracker); |
4c4b4cd2 PH |
3266 | break; |
3267 | ||
52ce6436 | 3268 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
3269 | case OP_ATR_SIZE: |
3270 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
3271 | case OP_ATR_FIRST: |
3272 | case OP_ATR_LAST: | |
3273 | case OP_ATR_LENGTH: | |
3274 | case OP_ATR_POS: | |
3275 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
3276 | case OP_ATR_MIN: |
3277 | case OP_ATR_MAX: | |
52ce6436 PH |
3278 | case TERNOP_IN_RANGE: |
3279 | case BINOP_IN_BOUNDS: | |
3280 | case UNOP_IN_RANGE: | |
3281 | case OP_AGGREGATE: | |
3282 | case OP_OTHERS: | |
3283 | case OP_CHOICES: | |
3284 | case OP_POSITIONAL: | |
3285 | case OP_DISCRETE_RANGE: | |
3286 | case OP_NAME: | |
3287 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
3288 | *pos += oplen; | |
14f9c5c9 AS |
3289 | break; |
3290 | ||
3291 | case BINOP_ASSIGN: | |
3292 | { | |
4c4b4cd2 PH |
3293 | struct value *arg1; |
3294 | ||
3295 | *pos += 1; | |
699bd4cf | 3296 | arg1 = resolve_subexp (expp, pos, 0, NULL, parse_completion, tracker); |
4c4b4cd2 | 3297 | if (arg1 == NULL) |
699bd4cf | 3298 | resolve_subexp (expp, pos, 1, NULL, parse_completion, tracker); |
4c4b4cd2 | 3299 | else |
699bd4cf TT |
3300 | resolve_subexp (expp, pos, 1, value_type (arg1), parse_completion, |
3301 | tracker); | |
4c4b4cd2 | 3302 | break; |
14f9c5c9 AS |
3303 | } |
3304 | ||
4c4b4cd2 | 3305 | case UNOP_CAST: |
4c4b4cd2 PH |
3306 | *pos += 3; |
3307 | nargs = 1; | |
3308 | break; | |
14f9c5c9 | 3309 | |
4c4b4cd2 PH |
3310 | case BINOP_ADD: |
3311 | case BINOP_SUB: | |
3312 | case BINOP_MUL: | |
3313 | case BINOP_DIV: | |
3314 | case BINOP_REM: | |
3315 | case BINOP_MOD: | |
3316 | case BINOP_EXP: | |
3317 | case BINOP_CONCAT: | |
3318 | case BINOP_LOGICAL_AND: | |
3319 | case BINOP_LOGICAL_OR: | |
3320 | case BINOP_BITWISE_AND: | |
3321 | case BINOP_BITWISE_IOR: | |
3322 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 3323 | |
4c4b4cd2 PH |
3324 | case BINOP_EQUAL: |
3325 | case BINOP_NOTEQUAL: | |
3326 | case BINOP_LESS: | |
3327 | case BINOP_GTR: | |
3328 | case BINOP_LEQ: | |
3329 | case BINOP_GEQ: | |
14f9c5c9 | 3330 | |
4c4b4cd2 PH |
3331 | case BINOP_REPEAT: |
3332 | case BINOP_SUBSCRIPT: | |
3333 | case BINOP_COMMA: | |
40c8aaa9 JB |
3334 | *pos += 1; |
3335 | nargs = 2; | |
3336 | break; | |
14f9c5c9 | 3337 | |
4c4b4cd2 PH |
3338 | case UNOP_NEG: |
3339 | case UNOP_PLUS: | |
3340 | case UNOP_LOGICAL_NOT: | |
3341 | case UNOP_ABS: | |
3342 | case UNOP_IND: | |
3343 | *pos += 1; | |
3344 | nargs = 1; | |
3345 | break; | |
14f9c5c9 | 3346 | |
4c4b4cd2 | 3347 | case OP_LONG: |
edd079d9 | 3348 | case OP_FLOAT: |
4c4b4cd2 | 3349 | case OP_VAR_VALUE: |
74ea4be4 | 3350 | case OP_VAR_MSYM_VALUE: |
4c4b4cd2 PH |
3351 | *pos += 4; |
3352 | break; | |
14f9c5c9 | 3353 | |
4c4b4cd2 PH |
3354 | case OP_TYPE: |
3355 | case OP_BOOL: | |
3356 | case OP_LAST: | |
4c4b4cd2 PH |
3357 | case OP_INTERNALVAR: |
3358 | *pos += 3; | |
3359 | break; | |
14f9c5c9 | 3360 | |
4c4b4cd2 PH |
3361 | case UNOP_MEMVAL: |
3362 | *pos += 3; | |
3363 | nargs = 1; | |
3364 | break; | |
3365 | ||
67f3407f DJ |
3366 | case OP_REGISTER: |
3367 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3368 | break; | |
3369 | ||
4c4b4cd2 PH |
3370 | case STRUCTOP_STRUCT: |
3371 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3372 | nargs = 1; | |
3373 | break; | |
3374 | ||
4c4b4cd2 | 3375 | case TERNOP_SLICE: |
4c4b4cd2 PH |
3376 | *pos += 1; |
3377 | nargs = 3; | |
3378 | break; | |
3379 | ||
52ce6436 | 3380 | case OP_STRING: |
14f9c5c9 | 3381 | break; |
4c4b4cd2 PH |
3382 | |
3383 | default: | |
323e0a4a | 3384 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
3385 | } |
3386 | ||
8d749320 | 3387 | argvec = XALLOCAVEC (struct value *, nargs + 1); |
4c4b4cd2 | 3388 | for (i = 0; i < nargs; i += 1) |
699bd4cf TT |
3389 | argvec[i] = resolve_subexp (expp, pos, 1, NULL, parse_completion, |
3390 | tracker); | |
4c4b4cd2 | 3391 | argvec[i] = NULL; |
e9d9f57e | 3392 | exp = expp->get (); |
4c4b4cd2 PH |
3393 | |
3394 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
3395 | switch (op) |
3396 | { | |
3397 | default: | |
3398 | break; | |
3399 | ||
14f9c5c9 | 3400 | case OP_VAR_VALUE: |
4c4b4cd2 | 3401 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 | 3402 | { |
54d343a2 | 3403 | std::vector<struct block_symbol> candidates; |
76a01679 JB |
3404 | int n_candidates; |
3405 | ||
3406 | n_candidates = | |
3407 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
3408 | (exp->elts[pc + 2].symbol), | |
3409 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
4eeaa230 | 3410 | &candidates); |
76a01679 JB |
3411 | |
3412 | if (n_candidates > 1) | |
3413 | { | |
3414 | /* Types tend to get re-introduced locally, so if there | |
3415 | are any local symbols that are not types, first filter | |
3416 | out all types. */ | |
3417 | int j; | |
3418 | for (j = 0; j < n_candidates; j += 1) | |
d12307c1 | 3419 | switch (SYMBOL_CLASS (candidates[j].symbol)) |
76a01679 JB |
3420 | { |
3421 | case LOC_REGISTER: | |
3422 | case LOC_ARG: | |
3423 | case LOC_REF_ARG: | |
76a01679 JB |
3424 | case LOC_REGPARM_ADDR: |
3425 | case LOC_LOCAL: | |
76a01679 | 3426 | case LOC_COMPUTED: |
76a01679 JB |
3427 | goto FoundNonType; |
3428 | default: | |
3429 | break; | |
3430 | } | |
3431 | FoundNonType: | |
3432 | if (j < n_candidates) | |
3433 | { | |
3434 | j = 0; | |
3435 | while (j < n_candidates) | |
3436 | { | |
d12307c1 | 3437 | if (SYMBOL_CLASS (candidates[j].symbol) == LOC_TYPEDEF) |
76a01679 JB |
3438 | { |
3439 | candidates[j] = candidates[n_candidates - 1]; | |
3440 | n_candidates -= 1; | |
3441 | } | |
3442 | else | |
3443 | j += 1; | |
3444 | } | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | if (n_candidates == 0) | |
323e0a4a | 3449 | error (_("No definition found for %s"), |
76a01679 JB |
3450 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3451 | else if (n_candidates == 1) | |
3452 | i = 0; | |
3453 | else if (deprocedure_p | |
54d343a2 | 3454 | && !is_nonfunction (candidates.data (), n_candidates)) |
76a01679 | 3455 | { |
06d5cf63 | 3456 | i = ada_resolve_function |
54d343a2 | 3457 | (candidates.data (), n_candidates, NULL, 0, |
06d5cf63 | 3458 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), |
2a612529 | 3459 | context_type, parse_completion); |
76a01679 | 3460 | if (i < 0) |
323e0a4a | 3461 | error (_("Could not find a match for %s"), |
76a01679 JB |
3462 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3463 | } | |
3464 | else | |
3465 | { | |
323e0a4a | 3466 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 | 3467 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
54d343a2 | 3468 | user_select_syms (candidates.data (), n_candidates, 1); |
76a01679 JB |
3469 | i = 0; |
3470 | } | |
3471 | ||
3472 | exp->elts[pc + 1].block = candidates[i].block; | |
d12307c1 | 3473 | exp->elts[pc + 2].symbol = candidates[i].symbol; |
699bd4cf | 3474 | tracker->update (candidates[i]); |
76a01679 JB |
3475 | } |
3476 | ||
3477 | if (deprocedure_p | |
3478 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
3479 | == TYPE_CODE_FUNC)) | |
3480 | { | |
424da6cf | 3481 | replace_operator_with_call (expp, pc, 0, 4, |
76a01679 JB |
3482 | exp->elts[pc + 2].symbol, |
3483 | exp->elts[pc + 1].block); | |
e9d9f57e | 3484 | exp = expp->get (); |
76a01679 | 3485 | } |
14f9c5c9 AS |
3486 | break; |
3487 | ||
3488 | case OP_FUNCALL: | |
3489 | { | |
4c4b4cd2 | 3490 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 3491 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 | 3492 | { |
54d343a2 | 3493 | std::vector<struct block_symbol> candidates; |
4c4b4cd2 PH |
3494 | int n_candidates; |
3495 | ||
3496 | n_candidates = | |
76a01679 JB |
3497 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
3498 | (exp->elts[pc + 5].symbol), | |
3499 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
4eeaa230 | 3500 | &candidates); |
ec6a20c2 | 3501 | |
4c4b4cd2 PH |
3502 | if (n_candidates == 1) |
3503 | i = 0; | |
3504 | else | |
3505 | { | |
06d5cf63 | 3506 | i = ada_resolve_function |
54d343a2 | 3507 | (candidates.data (), n_candidates, |
06d5cf63 JB |
3508 | argvec, nargs, |
3509 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2a612529 | 3510 | context_type, parse_completion); |
4c4b4cd2 | 3511 | if (i < 0) |
323e0a4a | 3512 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
3513 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
3514 | } | |
3515 | ||
3516 | exp->elts[pc + 4].block = candidates[i].block; | |
d12307c1 | 3517 | exp->elts[pc + 5].symbol = candidates[i].symbol; |
699bd4cf | 3518 | tracker->update (candidates[i]); |
4c4b4cd2 | 3519 | } |
14f9c5c9 AS |
3520 | } |
3521 | break; | |
3522 | case BINOP_ADD: | |
3523 | case BINOP_SUB: | |
3524 | case BINOP_MUL: | |
3525 | case BINOP_DIV: | |
3526 | case BINOP_REM: | |
3527 | case BINOP_MOD: | |
3528 | case BINOP_CONCAT: | |
3529 | case BINOP_BITWISE_AND: | |
3530 | case BINOP_BITWISE_IOR: | |
3531 | case BINOP_BITWISE_XOR: | |
3532 | case BINOP_EQUAL: | |
3533 | case BINOP_NOTEQUAL: | |
3534 | case BINOP_LESS: | |
3535 | case BINOP_GTR: | |
3536 | case BINOP_LEQ: | |
3537 | case BINOP_GEQ: | |
3538 | case BINOP_EXP: | |
3539 | case UNOP_NEG: | |
3540 | case UNOP_PLUS: | |
3541 | case UNOP_LOGICAL_NOT: | |
3542 | case UNOP_ABS: | |
3543 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 | 3544 | { |
54d343a2 | 3545 | std::vector<struct block_symbol> candidates; |
4c4b4cd2 PH |
3546 | int n_candidates; |
3547 | ||
3548 | n_candidates = | |
b5ec771e | 3549 | ada_lookup_symbol_list (ada_decoded_op_name (op), |
582942f4 | 3550 | NULL, VAR_DOMAIN, |
4eeaa230 | 3551 | &candidates); |
ec6a20c2 | 3552 | |
54d343a2 | 3553 | i = ada_resolve_function (candidates.data (), n_candidates, argvec, |
2a612529 TT |
3554 | nargs, ada_decoded_op_name (op), NULL, |
3555 | parse_completion); | |
4c4b4cd2 PH |
3556 | if (i < 0) |
3557 | break; | |
3558 | ||
d12307c1 PMR |
3559 | replace_operator_with_call (expp, pc, nargs, 1, |
3560 | candidates[i].symbol, | |
3561 | candidates[i].block); | |
e9d9f57e | 3562 | exp = expp->get (); |
4c4b4cd2 | 3563 | } |
14f9c5c9 | 3564 | break; |
4c4b4cd2 PH |
3565 | |
3566 | case OP_TYPE: | |
b3dbf008 | 3567 | case OP_REGISTER: |
4c4b4cd2 | 3568 | return NULL; |
14f9c5c9 AS |
3569 | } |
3570 | ||
3571 | *pos = pc; | |
ced9779b JB |
3572 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE) |
3573 | return evaluate_var_msym_value (EVAL_AVOID_SIDE_EFFECTS, | |
3574 | exp->elts[pc + 1].objfile, | |
3575 | exp->elts[pc + 2].msymbol); | |
3576 | else | |
3577 | return evaluate_subexp_type (exp, pos); | |
14f9c5c9 AS |
3578 | } |
3579 | ||
3580 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 | 3581 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
5b3d5b7d | 3582 | a non-pointer. */ |
14f9c5c9 | 3583 | /* The term "match" here is rather loose. The match is heuristic and |
5b3d5b7d | 3584 | liberal. */ |
14f9c5c9 AS |
3585 | |
3586 | static int | |
4dc81987 | 3587 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3588 | { |
61ee279c PH |
3589 | ftype = ada_check_typedef (ftype); |
3590 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3591 | |
3592 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3593 | ftype = TYPE_TARGET_TYPE (ftype); | |
3594 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3595 | atype = TYPE_TARGET_TYPE (atype); | |
3596 | ||
d2e4a39e | 3597 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3598 | { |
3599 | default: | |
5b3d5b7d | 3600 | return TYPE_CODE (ftype) == TYPE_CODE (atype); |
14f9c5c9 AS |
3601 | case TYPE_CODE_PTR: |
3602 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3603 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3604 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3605 | else |
1265e4aa JB |
3606 | return (may_deref |
3607 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3608 | case TYPE_CODE_INT: |
3609 | case TYPE_CODE_ENUM: | |
3610 | case TYPE_CODE_RANGE: | |
3611 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3612 | { |
3613 | case TYPE_CODE_INT: | |
3614 | case TYPE_CODE_ENUM: | |
3615 | case TYPE_CODE_RANGE: | |
3616 | return 1; | |
3617 | default: | |
3618 | return 0; | |
3619 | } | |
14f9c5c9 AS |
3620 | |
3621 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3622 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3623 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3624 | |
3625 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3626 | if (ada_is_array_descriptor_type (ftype)) |
3627 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3628 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3629 | else |
4c4b4cd2 PH |
3630 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3631 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3632 | |
3633 | case TYPE_CODE_UNION: | |
3634 | case TYPE_CODE_FLT: | |
3635 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3636 | } | |
3637 | } | |
3638 | ||
3639 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3640 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3641 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3642 | argument function. */ |
14f9c5c9 AS |
3643 | |
3644 | static int | |
d2e4a39e | 3645 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3646 | { |
3647 | int i; | |
d2e4a39e | 3648 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3649 | |
1265e4aa JB |
3650 | if (SYMBOL_CLASS (func) == LOC_CONST |
3651 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3652 | return (n_actuals == 0); |
3653 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3654 | return 0; | |
3655 | ||
3656 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3657 | return 0; | |
3658 | ||
3659 | for (i = 0; i < n_actuals; i += 1) | |
3660 | { | |
4c4b4cd2 | 3661 | if (actuals[i] == NULL) |
76a01679 JB |
3662 | return 0; |
3663 | else | |
3664 | { | |
5b4ee69b MS |
3665 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, |
3666 | i)); | |
df407dfe | 3667 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3668 | |
76a01679 JB |
3669 | if (!ada_type_match (ftype, atype, 1)) |
3670 | return 0; | |
3671 | } | |
14f9c5c9 AS |
3672 | } |
3673 | return 1; | |
3674 | } | |
3675 | ||
3676 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3677 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3678 | FUNC_TYPE is not a valid function type with a non-null return type | |
3679 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3680 | ||
3681 | static int | |
d2e4a39e | 3682 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3683 | { |
d2e4a39e | 3684 | struct type *return_type; |
14f9c5c9 AS |
3685 | |
3686 | if (func_type == NULL) | |
3687 | return 1; | |
3688 | ||
4c4b4cd2 | 3689 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
18af8284 | 3690 | return_type = get_base_type (TYPE_TARGET_TYPE (func_type)); |
4c4b4cd2 | 3691 | else |
18af8284 | 3692 | return_type = get_base_type (func_type); |
14f9c5c9 AS |
3693 | if (return_type == NULL) |
3694 | return 1; | |
3695 | ||
18af8284 | 3696 | context_type = get_base_type (context_type); |
14f9c5c9 AS |
3697 | |
3698 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3699 | return context_type == NULL || return_type == context_type; | |
3700 | else if (context_type == NULL) | |
3701 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3702 | else | |
3703 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3704 | } | |
3705 | ||
3706 | ||
4c4b4cd2 | 3707 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3708 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3709 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3710 | that returns that type, then eliminate matches that don't. If | |
3711 | CONTEXT_TYPE is void and there is at least one match that does not | |
3712 | return void, eliminate all matches that do. | |
3713 | ||
14f9c5c9 AS |
3714 | Asks the user if there is more than one match remaining. Returns -1 |
3715 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3716 | solely for messages. May re-arrange and modify SYMS in |
3717 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3718 | |
4c4b4cd2 | 3719 | static int |
d12307c1 | 3720 | ada_resolve_function (struct block_symbol syms[], |
4c4b4cd2 | 3721 | int nsyms, struct value **args, int nargs, |
2a612529 TT |
3722 | const char *name, struct type *context_type, |
3723 | int parse_completion) | |
14f9c5c9 | 3724 | { |
30b15541 | 3725 | int fallback; |
14f9c5c9 | 3726 | int k; |
4c4b4cd2 | 3727 | int m; /* Number of hits */ |
14f9c5c9 | 3728 | |
d2e4a39e | 3729 | m = 0; |
30b15541 UW |
3730 | /* In the first pass of the loop, we only accept functions matching |
3731 | context_type. If none are found, we add a second pass of the loop | |
3732 | where every function is accepted. */ | |
3733 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
14f9c5c9 AS |
3734 | { |
3735 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3736 | { |
d12307c1 | 3737 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].symbol)); |
4c4b4cd2 | 3738 | |
d12307c1 | 3739 | if (ada_args_match (syms[k].symbol, args, nargs) |
30b15541 | 3740 | && (fallback || return_match (type, context_type))) |
4c4b4cd2 PH |
3741 | { |
3742 | syms[m] = syms[k]; | |
3743 | m += 1; | |
3744 | } | |
3745 | } | |
14f9c5c9 AS |
3746 | } |
3747 | ||
dc5c8746 PMR |
3748 | /* If we got multiple matches, ask the user which one to use. Don't do this |
3749 | interactive thing during completion, though, as the purpose of the | |
3750 | completion is providing a list of all possible matches. Prompting the | |
3751 | user to filter it down would be completely unexpected in this case. */ | |
14f9c5c9 AS |
3752 | if (m == 0) |
3753 | return -1; | |
dc5c8746 | 3754 | else if (m > 1 && !parse_completion) |
14f9c5c9 | 3755 | { |
323e0a4a | 3756 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3757 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3758 | return 0; |
3759 | } | |
3760 | return 0; | |
3761 | } | |
3762 | ||
4c4b4cd2 PH |
3763 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3764 | in a listing of choices during disambiguation (see sort_choices, below). | |
3765 | The idea is that overloadings of a subprogram name from the | |
3766 | same package should sort in their source order. We settle for ordering | |
3767 | such symbols by their trailing number (__N or $N). */ | |
3768 | ||
14f9c5c9 | 3769 | static int |
0d5cff50 | 3770 | encoded_ordered_before (const char *N0, const char *N1) |
14f9c5c9 AS |
3771 | { |
3772 | if (N1 == NULL) | |
3773 | return 0; | |
3774 | else if (N0 == NULL) | |
3775 | return 1; | |
3776 | else | |
3777 | { | |
3778 | int k0, k1; | |
5b4ee69b | 3779 | |
d2e4a39e | 3780 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3781 | ; |
d2e4a39e | 3782 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3783 | ; |
d2e4a39e | 3784 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3785 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3786 | { | |
3787 | int n0, n1; | |
5b4ee69b | 3788 | |
4c4b4cd2 PH |
3789 | n0 = k0; |
3790 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3791 | n0 -= 1; | |
3792 | n1 = k1; | |
3793 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3794 | n1 -= 1; | |
3795 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3796 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3797 | } | |
14f9c5c9 AS |
3798 | return (strcmp (N0, N1) < 0); |
3799 | } | |
3800 | } | |
d2e4a39e | 3801 | |
4c4b4cd2 PH |
3802 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3803 | encoded names. */ | |
3804 | ||
d2e4a39e | 3805 | static void |
d12307c1 | 3806 | sort_choices (struct block_symbol syms[], int nsyms) |
14f9c5c9 | 3807 | { |
4c4b4cd2 | 3808 | int i; |
5b4ee69b | 3809 | |
d2e4a39e | 3810 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3811 | { |
d12307c1 | 3812 | struct block_symbol sym = syms[i]; |
14f9c5c9 AS |
3813 | int j; |
3814 | ||
d2e4a39e | 3815 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 | 3816 | { |
d12307c1 PMR |
3817 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].symbol), |
3818 | SYMBOL_LINKAGE_NAME (sym.symbol))) | |
4c4b4cd2 PH |
3819 | break; |
3820 | syms[j + 1] = syms[j]; | |
3821 | } | |
d2e4a39e | 3822 | syms[j + 1] = sym; |
14f9c5c9 AS |
3823 | } |
3824 | } | |
3825 | ||
d72413e6 PMR |
3826 | /* Whether GDB should display formals and return types for functions in the |
3827 | overloads selection menu. */ | |
3828 | static int print_signatures = 1; | |
3829 | ||
3830 | /* Print the signature for SYM on STREAM according to the FLAGS options. For | |
3831 | all but functions, the signature is just the name of the symbol. For | |
3832 | functions, this is the name of the function, the list of types for formals | |
3833 | and the return type (if any). */ | |
3834 | ||
3835 | static void | |
3836 | ada_print_symbol_signature (struct ui_file *stream, struct symbol *sym, | |
3837 | const struct type_print_options *flags) | |
3838 | { | |
3839 | struct type *type = SYMBOL_TYPE (sym); | |
3840 | ||
3841 | fprintf_filtered (stream, "%s", SYMBOL_PRINT_NAME (sym)); | |
3842 | if (!print_signatures | |
3843 | || type == NULL | |
3844 | || TYPE_CODE (type) != TYPE_CODE_FUNC) | |
3845 | return; | |
3846 | ||
3847 | if (TYPE_NFIELDS (type) > 0) | |
3848 | { | |
3849 | int i; | |
3850 | ||
3851 | fprintf_filtered (stream, " ("); | |
3852 | for (i = 0; i < TYPE_NFIELDS (type); ++i) | |
3853 | { | |
3854 | if (i > 0) | |
3855 | fprintf_filtered (stream, "; "); | |
3856 | ada_print_type (TYPE_FIELD_TYPE (type, i), NULL, stream, -1, 0, | |
3857 | flags); | |
3858 | } | |
3859 | fprintf_filtered (stream, ")"); | |
3860 | } | |
3861 | if (TYPE_TARGET_TYPE (type) != NULL | |
3862 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID) | |
3863 | { | |
3864 | fprintf_filtered (stream, " return "); | |
3865 | ada_print_type (TYPE_TARGET_TYPE (type), NULL, stream, -1, 0, flags); | |
3866 | } | |
3867 | } | |
3868 | ||
4c4b4cd2 PH |
3869 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3870 | by asking the user (if necessary), returning the number selected, | |
3871 | and setting the first elements of SYMS items. Error if no symbols | |
3872 | selected. */ | |
14f9c5c9 AS |
3873 | |
3874 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3875 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3876 | |
3877 | int | |
d12307c1 | 3878 | user_select_syms (struct block_symbol *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3879 | { |
3880 | int i; | |
8d749320 | 3881 | int *chosen = XALLOCAVEC (int , nsyms); |
14f9c5c9 AS |
3882 | int n_chosen; |
3883 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3884 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3885 | |
3886 | if (max_results < 1) | |
323e0a4a | 3887 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3888 | if (nsyms <= 1) |
3889 | return nsyms; | |
3890 | ||
717d2f5a JB |
3891 | if (select_mode == multiple_symbols_cancel) |
3892 | error (_("\ | |
3893 | canceled because the command is ambiguous\n\ | |
3894 | See set/show multiple-symbol.")); | |
a0087920 | 3895 | |
717d2f5a JB |
3896 | /* If select_mode is "all", then return all possible symbols. |
3897 | Only do that if more than one symbol can be selected, of course. | |
3898 | Otherwise, display the menu as usual. */ | |
3899 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3900 | return nsyms; | |
3901 | ||
a0087920 | 3902 | printf_filtered (_("[0] cancel\n")); |
14f9c5c9 | 3903 | if (max_results > 1) |
a0087920 | 3904 | printf_filtered (_("[1] all\n")); |
14f9c5c9 | 3905 | |
4c4b4cd2 | 3906 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3907 | |
3908 | for (i = 0; i < nsyms; i += 1) | |
3909 | { | |
d12307c1 | 3910 | if (syms[i].symbol == NULL) |
4c4b4cd2 PH |
3911 | continue; |
3912 | ||
d12307c1 | 3913 | if (SYMBOL_CLASS (syms[i].symbol) == LOC_BLOCK) |
4c4b4cd2 | 3914 | { |
76a01679 | 3915 | struct symtab_and_line sal = |
d12307c1 | 3916 | find_function_start_sal (syms[i].symbol, 1); |
5b4ee69b | 3917 | |
a0087920 | 3918 | printf_filtered ("[%d] ", i + first_choice); |
d72413e6 PMR |
3919 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, |
3920 | &type_print_raw_options); | |
323e0a4a | 3921 | if (sal.symtab == NULL) |
a0087920 TT |
3922 | printf_filtered (_(" at <no source file available>:%d\n"), |
3923 | sal.line); | |
323e0a4a | 3924 | else |
a0087920 TT |
3925 | printf_filtered (_(" at %s:%d\n"), |
3926 | symtab_to_filename_for_display (sal.symtab), | |
3927 | sal.line); | |
4c4b4cd2 PH |
3928 | continue; |
3929 | } | |
d2e4a39e | 3930 | else |
4c4b4cd2 PH |
3931 | { |
3932 | int is_enumeral = | |
d12307c1 PMR |
3933 | (SYMBOL_CLASS (syms[i].symbol) == LOC_CONST |
3934 | && SYMBOL_TYPE (syms[i].symbol) != NULL | |
3935 | && TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) == TYPE_CODE_ENUM); | |
1994afbf DE |
3936 | struct symtab *symtab = NULL; |
3937 | ||
d12307c1 PMR |
3938 | if (SYMBOL_OBJFILE_OWNED (syms[i].symbol)) |
3939 | symtab = symbol_symtab (syms[i].symbol); | |
4c4b4cd2 | 3940 | |
d12307c1 | 3941 | if (SYMBOL_LINE (syms[i].symbol) != 0 && symtab != NULL) |
d72413e6 | 3942 | { |
a0087920 | 3943 | printf_filtered ("[%d] ", i + first_choice); |
d72413e6 PMR |
3944 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, |
3945 | &type_print_raw_options); | |
a0087920 TT |
3946 | printf_filtered (_(" at %s:%d\n"), |
3947 | symtab_to_filename_for_display (symtab), | |
3948 | SYMBOL_LINE (syms[i].symbol)); | |
d72413e6 | 3949 | } |
76a01679 | 3950 | else if (is_enumeral |
d12307c1 | 3951 | && TYPE_NAME (SYMBOL_TYPE (syms[i].symbol)) != NULL) |
4c4b4cd2 | 3952 | { |
a0087920 | 3953 | printf_filtered (("[%d] "), i + first_choice); |
d12307c1 | 3954 | ada_print_type (SYMBOL_TYPE (syms[i].symbol), NULL, |
79d43c61 | 3955 | gdb_stdout, -1, 0, &type_print_raw_options); |
a0087920 TT |
3956 | printf_filtered (_("'(%s) (enumeral)\n"), |
3957 | SYMBOL_PRINT_NAME (syms[i].symbol)); | |
4c4b4cd2 | 3958 | } |
d72413e6 PMR |
3959 | else |
3960 | { | |
a0087920 | 3961 | printf_filtered ("[%d] ", i + first_choice); |
d72413e6 PMR |
3962 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, |
3963 | &type_print_raw_options); | |
3964 | ||
3965 | if (symtab != NULL) | |
a0087920 TT |
3966 | printf_filtered (is_enumeral |
3967 | ? _(" in %s (enumeral)\n") | |
3968 | : _(" at %s:?\n"), | |
3969 | symtab_to_filename_for_display (symtab)); | |
d72413e6 | 3970 | else |
a0087920 TT |
3971 | printf_filtered (is_enumeral |
3972 | ? _(" (enumeral)\n") | |
3973 | : _(" at ?\n")); | |
d72413e6 | 3974 | } |
4c4b4cd2 | 3975 | } |
14f9c5c9 | 3976 | } |
d2e4a39e | 3977 | |
14f9c5c9 | 3978 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3979 | "overload-choice"); |
14f9c5c9 AS |
3980 | |
3981 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3982 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3983 | |
3984 | return n_chosen; | |
3985 | } | |
3986 | ||
3987 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3988 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3989 | order in CHOICES[0 .. N-1], and return N. |
3990 | ||
3991 | The user types choices as a sequence of numbers on one line | |
3992 | separated by blanks, encoding them as follows: | |
3993 | ||
4c4b4cd2 | 3994 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3995 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3996 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3997 | ||
4c4b4cd2 | 3998 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3999 | |
4000 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 4001 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
4002 | |
4003 | int | |
d2e4a39e | 4004 | get_selections (int *choices, int n_choices, int max_results, |
a121b7c1 | 4005 | int is_all_choice, const char *annotation_suffix) |
14f9c5c9 | 4006 | { |
d2e4a39e | 4007 | char *args; |
a121b7c1 | 4008 | const char *prompt; |
14f9c5c9 AS |
4009 | int n_chosen; |
4010 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 4011 | |
14f9c5c9 AS |
4012 | prompt = getenv ("PS2"); |
4013 | if (prompt == NULL) | |
0bcd0149 | 4014 | prompt = "> "; |
14f9c5c9 | 4015 | |
89fbedf3 | 4016 | args = command_line_input (prompt, annotation_suffix); |
d2e4a39e | 4017 | |
14f9c5c9 | 4018 | if (args == NULL) |
323e0a4a | 4019 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
4020 | |
4021 | n_chosen = 0; | |
76a01679 | 4022 | |
4c4b4cd2 PH |
4023 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
4024 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
4025 | while (1) |
4026 | { | |
d2e4a39e | 4027 | char *args2; |
14f9c5c9 AS |
4028 | int choice, j; |
4029 | ||
0fcd72ba | 4030 | args = skip_spaces (args); |
14f9c5c9 | 4031 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 4032 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 4033 | else if (*args == '\0') |
4c4b4cd2 | 4034 | break; |
14f9c5c9 AS |
4035 | |
4036 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 4037 | if (args == args2 || choice < 0 |
4c4b4cd2 | 4038 | || choice > n_choices + first_choice - 1) |
323e0a4a | 4039 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
4040 | args = args2; |
4041 | ||
d2e4a39e | 4042 | if (choice == 0) |
323e0a4a | 4043 | error (_("cancelled")); |
14f9c5c9 AS |
4044 | |
4045 | if (choice < first_choice) | |
4c4b4cd2 PH |
4046 | { |
4047 | n_chosen = n_choices; | |
4048 | for (j = 0; j < n_choices; j += 1) | |
4049 | choices[j] = j; | |
4050 | break; | |
4051 | } | |
14f9c5c9 AS |
4052 | choice -= first_choice; |
4053 | ||
d2e4a39e | 4054 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
4055 | { |
4056 | } | |
14f9c5c9 AS |
4057 | |
4058 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
4059 | { |
4060 | int k; | |
5b4ee69b | 4061 | |
4c4b4cd2 PH |
4062 | for (k = n_chosen - 1; k > j; k -= 1) |
4063 | choices[k + 1] = choices[k]; | |
4064 | choices[j + 1] = choice; | |
4065 | n_chosen += 1; | |
4066 | } | |
14f9c5c9 AS |
4067 | } |
4068 | ||
4069 | if (n_chosen > max_results) | |
323e0a4a | 4070 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 4071 | |
14f9c5c9 AS |
4072 | return n_chosen; |
4073 | } | |
4074 | ||
4c4b4cd2 PH |
4075 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
4076 | on the function identified by SYM and BLOCK, and taking NARGS | |
4077 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
4078 | |
4079 | static void | |
e9d9f57e | 4080 | replace_operator_with_call (expression_up *expp, int pc, int nargs, |
4c4b4cd2 | 4081 | int oplen, struct symbol *sym, |
270140bd | 4082 | const struct block *block) |
14f9c5c9 AS |
4083 | { |
4084 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 4085 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 4086 | struct expression *newexp = (struct expression *) |
8c1a34e7 | 4087 | xzalloc (sizeof (struct expression) |
4c4b4cd2 | 4088 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
e9d9f57e | 4089 | struct expression *exp = expp->get (); |
14f9c5c9 AS |
4090 | |
4091 | newexp->nelts = exp->nelts + 7 - oplen; | |
4092 | newexp->language_defn = exp->language_defn; | |
3489610d | 4093 | newexp->gdbarch = exp->gdbarch; |
14f9c5c9 | 4094 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); |
d2e4a39e | 4095 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 4096 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
4097 | |
4098 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
4099 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
4100 | ||
4101 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
4102 | newexp->elts[pc + 4].block = block; | |
4103 | newexp->elts[pc + 5].symbol = sym; | |
4104 | ||
e9d9f57e | 4105 | expp->reset (newexp); |
d2e4a39e | 4106 | } |
14f9c5c9 AS |
4107 | |
4108 | /* Type-class predicates */ | |
4109 | ||
4c4b4cd2 PH |
4110 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
4111 | or FLOAT). */ | |
14f9c5c9 AS |
4112 | |
4113 | static int | |
d2e4a39e | 4114 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
4115 | { |
4116 | if (type == NULL) | |
4117 | return 0; | |
d2e4a39e AS |
4118 | else |
4119 | { | |
4120 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4121 | { |
4122 | case TYPE_CODE_INT: | |
4123 | case TYPE_CODE_FLT: | |
4124 | return 1; | |
4125 | case TYPE_CODE_RANGE: | |
4126 | return (type == TYPE_TARGET_TYPE (type) | |
4127 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
4128 | default: | |
4129 | return 0; | |
4130 | } | |
d2e4a39e | 4131 | } |
14f9c5c9 AS |
4132 | } |
4133 | ||
4c4b4cd2 | 4134 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
4135 | |
4136 | static int | |
d2e4a39e | 4137 | integer_type_p (struct type *type) |
14f9c5c9 AS |
4138 | { |
4139 | if (type == NULL) | |
4140 | return 0; | |
d2e4a39e AS |
4141 | else |
4142 | { | |
4143 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4144 | { |
4145 | case TYPE_CODE_INT: | |
4146 | return 1; | |
4147 | case TYPE_CODE_RANGE: | |
4148 | return (type == TYPE_TARGET_TYPE (type) | |
4149 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
4150 | default: | |
4151 | return 0; | |
4152 | } | |
d2e4a39e | 4153 | } |
14f9c5c9 AS |
4154 | } |
4155 | ||
4c4b4cd2 | 4156 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
4157 | |
4158 | static int | |
d2e4a39e | 4159 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
4160 | { |
4161 | if (type == NULL) | |
4162 | return 0; | |
d2e4a39e AS |
4163 | else |
4164 | { | |
4165 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4166 | { |
4167 | case TYPE_CODE_INT: | |
4168 | case TYPE_CODE_RANGE: | |
4169 | case TYPE_CODE_ENUM: | |
4170 | case TYPE_CODE_FLT: | |
4171 | return 1; | |
4172 | default: | |
4173 | return 0; | |
4174 | } | |
d2e4a39e | 4175 | } |
14f9c5c9 AS |
4176 | } |
4177 | ||
4c4b4cd2 | 4178 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
4179 | |
4180 | static int | |
d2e4a39e | 4181 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
4182 | { |
4183 | if (type == NULL) | |
4184 | return 0; | |
d2e4a39e AS |
4185 | else |
4186 | { | |
4187 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4188 | { |
4189 | case TYPE_CODE_INT: | |
4190 | case TYPE_CODE_RANGE: | |
4191 | case TYPE_CODE_ENUM: | |
872f0337 | 4192 | case TYPE_CODE_BOOL: |
4c4b4cd2 PH |
4193 | return 1; |
4194 | default: | |
4195 | return 0; | |
4196 | } | |
d2e4a39e | 4197 | } |
14f9c5c9 AS |
4198 | } |
4199 | ||
4c4b4cd2 PH |
4200 | /* Returns non-zero if OP with operands in the vector ARGS could be |
4201 | a user-defined function. Errs on the side of pre-defined operators | |
4202 | (i.e., result 0). */ | |
14f9c5c9 AS |
4203 | |
4204 | static int | |
d2e4a39e | 4205 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 4206 | { |
76a01679 | 4207 | struct type *type0 = |
df407dfe | 4208 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 4209 | struct type *type1 = |
df407dfe | 4210 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 4211 | |
4c4b4cd2 PH |
4212 | if (type0 == NULL) |
4213 | return 0; | |
4214 | ||
14f9c5c9 AS |
4215 | switch (op) |
4216 | { | |
4217 | default: | |
4218 | return 0; | |
4219 | ||
4220 | case BINOP_ADD: | |
4221 | case BINOP_SUB: | |
4222 | case BINOP_MUL: | |
4223 | case BINOP_DIV: | |
d2e4a39e | 4224 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
4225 | |
4226 | case BINOP_REM: | |
4227 | case BINOP_MOD: | |
4228 | case BINOP_BITWISE_AND: | |
4229 | case BINOP_BITWISE_IOR: | |
4230 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 4231 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4232 | |
4233 | case BINOP_EQUAL: | |
4234 | case BINOP_NOTEQUAL: | |
4235 | case BINOP_LESS: | |
4236 | case BINOP_GTR: | |
4237 | case BINOP_LEQ: | |
4238 | case BINOP_GEQ: | |
d2e4a39e | 4239 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
4240 | |
4241 | case BINOP_CONCAT: | |
ee90b9ab | 4242 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
4243 | |
4244 | case BINOP_EXP: | |
d2e4a39e | 4245 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4246 | |
4247 | case UNOP_NEG: | |
4248 | case UNOP_PLUS: | |
4249 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
4250 | case UNOP_ABS: |
4251 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
4252 | |
4253 | } | |
4254 | } | |
4255 | \f | |
4c4b4cd2 | 4256 | /* Renaming */ |
14f9c5c9 | 4257 | |
aeb5907d JB |
4258 | /* NOTES: |
4259 | ||
4260 | 1. In the following, we assume that a renaming type's name may | |
4261 | have an ___XD suffix. It would be nice if this went away at some | |
4262 | point. | |
4263 | 2. We handle both the (old) purely type-based representation of | |
4264 | renamings and the (new) variable-based encoding. At some point, | |
4265 | it is devoutly to be hoped that the former goes away | |
4266 | (FIXME: hilfinger-2007-07-09). | |
4267 | 3. Subprogram renamings are not implemented, although the XRS | |
4268 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
4269 | ||
4270 | /* If SYM encodes a renaming, | |
4271 | ||
4272 | <renaming> renames <renamed entity>, | |
4273 | ||
4274 | sets *LEN to the length of the renamed entity's name, | |
4275 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
4276 | the string describing the subcomponent selected from the renamed | |
0963b4bd | 4277 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming |
aeb5907d JB |
4278 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR |
4279 | are undefined). Otherwise, returns a value indicating the category | |
4280 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
4281 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
4282 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
4283 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
4284 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
4285 | may be NULL, in which case they are not assigned. | |
4286 | ||
4287 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
4288 | ||
4289 | enum ada_renaming_category | |
4290 | ada_parse_renaming (struct symbol *sym, | |
4291 | const char **renamed_entity, int *len, | |
4292 | const char **renaming_expr) | |
4293 | { | |
4294 | enum ada_renaming_category kind; | |
4295 | const char *info; | |
4296 | const char *suffix; | |
4297 | ||
4298 | if (sym == NULL) | |
4299 | return ADA_NOT_RENAMING; | |
4300 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 4301 | { |
aeb5907d JB |
4302 | default: |
4303 | return ADA_NOT_RENAMING; | |
4304 | case LOC_TYPEDEF: | |
4305 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
4306 | renamed_entity, len, renaming_expr); | |
4307 | case LOC_LOCAL: | |
4308 | case LOC_STATIC: | |
4309 | case LOC_COMPUTED: | |
4310 | case LOC_OPTIMIZED_OUT: | |
4311 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
4312 | if (info == NULL) | |
4313 | return ADA_NOT_RENAMING; | |
4314 | switch (info[5]) | |
4315 | { | |
4316 | case '_': | |
4317 | kind = ADA_OBJECT_RENAMING; | |
4318 | info += 6; | |
4319 | break; | |
4320 | case 'E': | |
4321 | kind = ADA_EXCEPTION_RENAMING; | |
4322 | info += 7; | |
4323 | break; | |
4324 | case 'P': | |
4325 | kind = ADA_PACKAGE_RENAMING; | |
4326 | info += 7; | |
4327 | break; | |
4328 | case 'S': | |
4329 | kind = ADA_SUBPROGRAM_RENAMING; | |
4330 | info += 7; | |
4331 | break; | |
4332 | default: | |
4333 | return ADA_NOT_RENAMING; | |
4334 | } | |
14f9c5c9 | 4335 | } |
4c4b4cd2 | 4336 | |
aeb5907d JB |
4337 | if (renamed_entity != NULL) |
4338 | *renamed_entity = info; | |
4339 | suffix = strstr (info, "___XE"); | |
4340 | if (suffix == NULL || suffix == info) | |
4341 | return ADA_NOT_RENAMING; | |
4342 | if (len != NULL) | |
4343 | *len = strlen (info) - strlen (suffix); | |
4344 | suffix += 5; | |
4345 | if (renaming_expr != NULL) | |
4346 | *renaming_expr = suffix; | |
4347 | return kind; | |
4348 | } | |
4349 | ||
4350 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
4351 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
4352 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
4353 | ADA_NOT_RENAMING otherwise. */ | |
4354 | static enum ada_renaming_category | |
4355 | parse_old_style_renaming (struct type *type, | |
4356 | const char **renamed_entity, int *len, | |
4357 | const char **renaming_expr) | |
4358 | { | |
4359 | enum ada_renaming_category kind; | |
4360 | const char *name; | |
4361 | const char *info; | |
4362 | const char *suffix; | |
14f9c5c9 | 4363 | |
aeb5907d JB |
4364 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
4365 | || TYPE_NFIELDS (type) != 1) | |
4366 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 4367 | |
a737d952 | 4368 | name = TYPE_NAME (type); |
aeb5907d JB |
4369 | if (name == NULL) |
4370 | return ADA_NOT_RENAMING; | |
4371 | ||
4372 | name = strstr (name, "___XR"); | |
4373 | if (name == NULL) | |
4374 | return ADA_NOT_RENAMING; | |
4375 | switch (name[5]) | |
4376 | { | |
4377 | case '\0': | |
4378 | case '_': | |
4379 | kind = ADA_OBJECT_RENAMING; | |
4380 | break; | |
4381 | case 'E': | |
4382 | kind = ADA_EXCEPTION_RENAMING; | |
4383 | break; | |
4384 | case 'P': | |
4385 | kind = ADA_PACKAGE_RENAMING; | |
4386 | break; | |
4387 | case 'S': | |
4388 | kind = ADA_SUBPROGRAM_RENAMING; | |
4389 | break; | |
4390 | default: | |
4391 | return ADA_NOT_RENAMING; | |
4392 | } | |
14f9c5c9 | 4393 | |
aeb5907d JB |
4394 | info = TYPE_FIELD_NAME (type, 0); |
4395 | if (info == NULL) | |
4396 | return ADA_NOT_RENAMING; | |
4397 | if (renamed_entity != NULL) | |
4398 | *renamed_entity = info; | |
4399 | suffix = strstr (info, "___XE"); | |
4400 | if (renaming_expr != NULL) | |
4401 | *renaming_expr = suffix + 5; | |
4402 | if (suffix == NULL || suffix == info) | |
4403 | return ADA_NOT_RENAMING; | |
4404 | if (len != NULL) | |
4405 | *len = suffix - info; | |
4406 | return kind; | |
a5ee536b JB |
4407 | } |
4408 | ||
4409 | /* Compute the value of the given RENAMING_SYM, which is expected to | |
4410 | be a symbol encoding a renaming expression. BLOCK is the block | |
4411 | used to evaluate the renaming. */ | |
52ce6436 | 4412 | |
a5ee536b JB |
4413 | static struct value * |
4414 | ada_read_renaming_var_value (struct symbol *renaming_sym, | |
3977b71f | 4415 | const struct block *block) |
a5ee536b | 4416 | { |
bbc13ae3 | 4417 | const char *sym_name; |
a5ee536b | 4418 | |
bbc13ae3 | 4419 | sym_name = SYMBOL_LINKAGE_NAME (renaming_sym); |
4d01a485 PA |
4420 | expression_up expr = parse_exp_1 (&sym_name, 0, block, 0); |
4421 | return evaluate_expression (expr.get ()); | |
a5ee536b | 4422 | } |
14f9c5c9 | 4423 | \f |
d2e4a39e | 4424 | |
4c4b4cd2 | 4425 | /* Evaluation: Function Calls */ |
14f9c5c9 | 4426 | |
4c4b4cd2 | 4427 | /* Return an lvalue containing the value VAL. This is the identity on |
40bc484c JB |
4428 | lvalues, and otherwise has the side-effect of allocating memory |
4429 | in the inferior where a copy of the value contents is copied. */ | |
14f9c5c9 | 4430 | |
d2e4a39e | 4431 | static struct value * |
40bc484c | 4432 | ensure_lval (struct value *val) |
14f9c5c9 | 4433 | { |
40bc484c JB |
4434 | if (VALUE_LVAL (val) == not_lval |
4435 | || VALUE_LVAL (val) == lval_internalvar) | |
c3e5cd34 | 4436 | { |
df407dfe | 4437 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
40bc484c JB |
4438 | const CORE_ADDR addr = |
4439 | value_as_long (value_allocate_space_in_inferior (len)); | |
c3e5cd34 | 4440 | |
a84a8a0d | 4441 | VALUE_LVAL (val) = lval_memory; |
1a088441 | 4442 | set_value_address (val, addr); |
40bc484c | 4443 | write_memory (addr, value_contents (val), len); |
c3e5cd34 | 4444 | } |
14f9c5c9 AS |
4445 | |
4446 | return val; | |
4447 | } | |
4448 | ||
4449 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
4450 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
4451 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 4452 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 4453 | |
a93c0eb6 | 4454 | struct value * |
40bc484c | 4455 | ada_convert_actual (struct value *actual, struct type *formal_type0) |
14f9c5c9 | 4456 | { |
df407dfe | 4457 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 4458 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
4459 | struct type *formal_target = |
4460 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 4461 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
4462 | struct type *actual_target = |
4463 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 4464 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 4465 | |
4c4b4cd2 | 4466 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 | 4467 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
40bc484c | 4468 | return make_array_descriptor (formal_type, actual); |
a84a8a0d JB |
4469 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
4470 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 4471 | { |
a84a8a0d | 4472 | struct value *result; |
5b4ee69b | 4473 | |
14f9c5c9 | 4474 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 4475 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 4476 | result = desc_data (actual); |
cb923fcc | 4477 | else if (TYPE_CODE (formal_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
4478 | { |
4479 | if (VALUE_LVAL (actual) != lval_memory) | |
4480 | { | |
4481 | struct value *val; | |
5b4ee69b | 4482 | |
df407dfe | 4483 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 4484 | val = allocate_value (actual_type); |
990a07ab | 4485 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 4486 | (char *) value_contents (actual), |
4c4b4cd2 | 4487 | TYPE_LENGTH (actual_type)); |
40bc484c | 4488 | actual = ensure_lval (val); |
4c4b4cd2 | 4489 | } |
a84a8a0d | 4490 | result = value_addr (actual); |
4c4b4cd2 | 4491 | } |
a84a8a0d JB |
4492 | else |
4493 | return actual; | |
b1af9e97 | 4494 | return value_cast_pointers (formal_type, result, 0); |
14f9c5c9 AS |
4495 | } |
4496 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
4497 | return ada_value_ind (actual); | |
8344af1e JB |
4498 | else if (ada_is_aligner_type (formal_type)) |
4499 | { | |
4500 | /* We need to turn this parameter into an aligner type | |
4501 | as well. */ | |
4502 | struct value *aligner = allocate_value (formal_type); | |
4503 | struct value *component = ada_value_struct_elt (aligner, "F", 0); | |
4504 | ||
4505 | value_assign_to_component (aligner, component, actual); | |
4506 | return aligner; | |
4507 | } | |
14f9c5c9 AS |
4508 | |
4509 | return actual; | |
4510 | } | |
4511 | ||
438c98a1 JB |
4512 | /* Convert VALUE (which must be an address) to a CORE_ADDR that is a pointer of |
4513 | type TYPE. This is usually an inefficient no-op except on some targets | |
4514 | (such as AVR) where the representation of a pointer and an address | |
4515 | differs. */ | |
4516 | ||
4517 | static CORE_ADDR | |
4518 | value_pointer (struct value *value, struct type *type) | |
4519 | { | |
4520 | struct gdbarch *gdbarch = get_type_arch (type); | |
4521 | unsigned len = TYPE_LENGTH (type); | |
224c3ddb | 4522 | gdb_byte *buf = (gdb_byte *) alloca (len); |
438c98a1 JB |
4523 | CORE_ADDR addr; |
4524 | ||
4525 | addr = value_address (value); | |
4526 | gdbarch_address_to_pointer (gdbarch, type, buf, addr); | |
4527 | addr = extract_unsigned_integer (buf, len, gdbarch_byte_order (gdbarch)); | |
4528 | return addr; | |
4529 | } | |
4530 | ||
14f9c5c9 | 4531 | |
4c4b4cd2 PH |
4532 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
4533 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 4534 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
4535 | to-descriptor type rather than a descriptor type), a struct value * |
4536 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 4537 | |
d2e4a39e | 4538 | static struct value * |
40bc484c | 4539 | make_array_descriptor (struct type *type, struct value *arr) |
14f9c5c9 | 4540 | { |
d2e4a39e AS |
4541 | struct type *bounds_type = desc_bounds_type (type); |
4542 | struct type *desc_type = desc_base_type (type); | |
4543 | struct value *descriptor = allocate_value (desc_type); | |
4544 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 4545 | int i; |
d2e4a39e | 4546 | |
0963b4bd MS |
4547 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); |
4548 | i > 0; i -= 1) | |
14f9c5c9 | 4549 | { |
19f220c3 JK |
4550 | modify_field (value_type (bounds), value_contents_writeable (bounds), |
4551 | ada_array_bound (arr, i, 0), | |
4552 | desc_bound_bitpos (bounds_type, i, 0), | |
4553 | desc_bound_bitsize (bounds_type, i, 0)); | |
4554 | modify_field (value_type (bounds), value_contents_writeable (bounds), | |
4555 | ada_array_bound (arr, i, 1), | |
4556 | desc_bound_bitpos (bounds_type, i, 1), | |
4557 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 4558 | } |
d2e4a39e | 4559 | |
40bc484c | 4560 | bounds = ensure_lval (bounds); |
d2e4a39e | 4561 | |
19f220c3 JK |
4562 | modify_field (value_type (descriptor), |
4563 | value_contents_writeable (descriptor), | |
4564 | value_pointer (ensure_lval (arr), | |
4565 | TYPE_FIELD_TYPE (desc_type, 0)), | |
4566 | fat_pntr_data_bitpos (desc_type), | |
4567 | fat_pntr_data_bitsize (desc_type)); | |
4568 | ||
4569 | modify_field (value_type (descriptor), | |
4570 | value_contents_writeable (descriptor), | |
4571 | value_pointer (bounds, | |
4572 | TYPE_FIELD_TYPE (desc_type, 1)), | |
4573 | fat_pntr_bounds_bitpos (desc_type), | |
4574 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 4575 | |
40bc484c | 4576 | descriptor = ensure_lval (descriptor); |
14f9c5c9 AS |
4577 | |
4578 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
4579 | return value_addr (descriptor); | |
4580 | else | |
4581 | return descriptor; | |
4582 | } | |
14f9c5c9 | 4583 | \f |
3d9434b5 JB |
4584 | /* Symbol Cache Module */ |
4585 | ||
3d9434b5 | 4586 | /* Performance measurements made as of 2010-01-15 indicate that |
ee01b665 | 4587 | this cache does bring some noticeable improvements. Depending |
3d9434b5 JB |
4588 | on the type of entity being printed, the cache can make it as much |
4589 | as an order of magnitude faster than without it. | |
4590 | ||
4591 | The descriptive type DWARF extension has significantly reduced | |
4592 | the need for this cache, at least when DWARF is being used. However, | |
4593 | even in this case, some expensive name-based symbol searches are still | |
4594 | sometimes necessary - to find an XVZ variable, mostly. */ | |
4595 | ||
ee01b665 | 4596 | /* Initialize the contents of SYM_CACHE. */ |
3d9434b5 | 4597 | |
ee01b665 JB |
4598 | static void |
4599 | ada_init_symbol_cache (struct ada_symbol_cache *sym_cache) | |
4600 | { | |
4601 | obstack_init (&sym_cache->cache_space); | |
4602 | memset (sym_cache->root, '\000', sizeof (sym_cache->root)); | |
4603 | } | |
3d9434b5 | 4604 | |
ee01b665 JB |
4605 | /* Free the memory used by SYM_CACHE. */ |
4606 | ||
4607 | static void | |
4608 | ada_free_symbol_cache (struct ada_symbol_cache *sym_cache) | |
3d9434b5 | 4609 | { |
ee01b665 JB |
4610 | obstack_free (&sym_cache->cache_space, NULL); |
4611 | xfree (sym_cache); | |
4612 | } | |
3d9434b5 | 4613 | |
ee01b665 JB |
4614 | /* Return the symbol cache associated to the given program space PSPACE. |
4615 | If not allocated for this PSPACE yet, allocate and initialize one. */ | |
3d9434b5 | 4616 | |
ee01b665 JB |
4617 | static struct ada_symbol_cache * |
4618 | ada_get_symbol_cache (struct program_space *pspace) | |
4619 | { | |
4620 | struct ada_pspace_data *pspace_data = get_ada_pspace_data (pspace); | |
ee01b665 | 4621 | |
66c168ae | 4622 | if (pspace_data->sym_cache == NULL) |
ee01b665 | 4623 | { |
66c168ae JB |
4624 | pspace_data->sym_cache = XCNEW (struct ada_symbol_cache); |
4625 | ada_init_symbol_cache (pspace_data->sym_cache); | |
ee01b665 JB |
4626 | } |
4627 | ||
66c168ae | 4628 | return pspace_data->sym_cache; |
ee01b665 | 4629 | } |
3d9434b5 JB |
4630 | |
4631 | /* Clear all entries from the symbol cache. */ | |
4632 | ||
4633 | static void | |
4634 | ada_clear_symbol_cache (void) | |
4635 | { | |
ee01b665 JB |
4636 | struct ada_symbol_cache *sym_cache |
4637 | = ada_get_symbol_cache (current_program_space); | |
4638 | ||
4639 | obstack_free (&sym_cache->cache_space, NULL); | |
4640 | ada_init_symbol_cache (sym_cache); | |
3d9434b5 JB |
4641 | } |
4642 | ||
fe978cb0 | 4643 | /* Search our cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4644 | Return it if found, or NULL otherwise. */ |
4645 | ||
4646 | static struct cache_entry ** | |
fe978cb0 | 4647 | find_entry (const char *name, domain_enum domain) |
3d9434b5 | 4648 | { |
ee01b665 JB |
4649 | struct ada_symbol_cache *sym_cache |
4650 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4651 | int h = msymbol_hash (name) % HASH_SIZE; |
4652 | struct cache_entry **e; | |
4653 | ||
ee01b665 | 4654 | for (e = &sym_cache->root[h]; *e != NULL; e = &(*e)->next) |
3d9434b5 | 4655 | { |
fe978cb0 | 4656 | if (domain == (*e)->domain && strcmp (name, (*e)->name) == 0) |
3d9434b5 JB |
4657 | return e; |
4658 | } | |
4659 | return NULL; | |
4660 | } | |
4661 | ||
fe978cb0 | 4662 | /* Search the symbol cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4663 | Return 1 if found, 0 otherwise. |
4664 | ||
4665 | If an entry was found and SYM is not NULL, set *SYM to the entry's | |
4666 | SYM. Same principle for BLOCK if not NULL. */ | |
96d887e8 | 4667 | |
96d887e8 | 4668 | static int |
fe978cb0 | 4669 | lookup_cached_symbol (const char *name, domain_enum domain, |
f0c5f9b2 | 4670 | struct symbol **sym, const struct block **block) |
96d887e8 | 4671 | { |
fe978cb0 | 4672 | struct cache_entry **e = find_entry (name, domain); |
3d9434b5 JB |
4673 | |
4674 | if (e == NULL) | |
4675 | return 0; | |
4676 | if (sym != NULL) | |
4677 | *sym = (*e)->sym; | |
4678 | if (block != NULL) | |
4679 | *block = (*e)->block; | |
4680 | return 1; | |
96d887e8 PH |
4681 | } |
4682 | ||
3d9434b5 | 4683 | /* Assuming that (SYM, BLOCK) is the result of the lookup of NAME |
fe978cb0 | 4684 | in domain DOMAIN, save this result in our symbol cache. */ |
3d9434b5 | 4685 | |
96d887e8 | 4686 | static void |
fe978cb0 | 4687 | cache_symbol (const char *name, domain_enum domain, struct symbol *sym, |
270140bd | 4688 | const struct block *block) |
96d887e8 | 4689 | { |
ee01b665 JB |
4690 | struct ada_symbol_cache *sym_cache |
4691 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4692 | int h; |
4693 | char *copy; | |
4694 | struct cache_entry *e; | |
4695 | ||
1994afbf DE |
4696 | /* Symbols for builtin types don't have a block. |
4697 | For now don't cache such symbols. */ | |
4698 | if (sym != NULL && !SYMBOL_OBJFILE_OWNED (sym)) | |
4699 | return; | |
4700 | ||
3d9434b5 JB |
4701 | /* If the symbol is a local symbol, then do not cache it, as a search |
4702 | for that symbol depends on the context. To determine whether | |
4703 | the symbol is local or not, we check the block where we found it | |
4704 | against the global and static blocks of its associated symtab. */ | |
4705 | if (sym | |
08be3fe3 | 4706 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4707 | GLOBAL_BLOCK) != block |
08be3fe3 | 4708 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4709 | STATIC_BLOCK) != block) |
3d9434b5 JB |
4710 | return; |
4711 | ||
4712 | h = msymbol_hash (name) % HASH_SIZE; | |
e39db4db | 4713 | e = XOBNEW (&sym_cache->cache_space, cache_entry); |
ee01b665 JB |
4714 | e->next = sym_cache->root[h]; |
4715 | sym_cache->root[h] = e; | |
224c3ddb SM |
4716 | e->name = copy |
4717 | = (char *) obstack_alloc (&sym_cache->cache_space, strlen (name) + 1); | |
3d9434b5 JB |
4718 | strcpy (copy, name); |
4719 | e->sym = sym; | |
fe978cb0 | 4720 | e->domain = domain; |
3d9434b5 | 4721 | e->block = block; |
96d887e8 | 4722 | } |
4c4b4cd2 PH |
4723 | \f |
4724 | /* Symbol Lookup */ | |
4725 | ||
b5ec771e PA |
4726 | /* Return the symbol name match type that should be used used when |
4727 | searching for all symbols matching LOOKUP_NAME. | |
c0431670 JB |
4728 | |
4729 | LOOKUP_NAME is expected to be a symbol name after transformation | |
f98b2e33 | 4730 | for Ada lookups. */ |
c0431670 | 4731 | |
b5ec771e PA |
4732 | static symbol_name_match_type |
4733 | name_match_type_from_name (const char *lookup_name) | |
c0431670 | 4734 | { |
b5ec771e PA |
4735 | return (strstr (lookup_name, "__") == NULL |
4736 | ? symbol_name_match_type::WILD | |
4737 | : symbol_name_match_type::FULL); | |
c0431670 JB |
4738 | } |
4739 | ||
4c4b4cd2 PH |
4740 | /* Return the result of a standard (literal, C-like) lookup of NAME in |
4741 | given DOMAIN, visible from lexical block BLOCK. */ | |
4742 | ||
4743 | static struct symbol * | |
4744 | standard_lookup (const char *name, const struct block *block, | |
4745 | domain_enum domain) | |
4746 | { | |
acbd605d | 4747 | /* Initialize it just to avoid a GCC false warning. */ |
6640a367 | 4748 | struct block_symbol sym = {}; |
4c4b4cd2 | 4749 | |
d12307c1 PMR |
4750 | if (lookup_cached_symbol (name, domain, &sym.symbol, NULL)) |
4751 | return sym.symbol; | |
a2cd4f14 | 4752 | ada_lookup_encoded_symbol (name, block, domain, &sym); |
d12307c1 PMR |
4753 | cache_symbol (name, domain, sym.symbol, sym.block); |
4754 | return sym.symbol; | |
4c4b4cd2 PH |
4755 | } |
4756 | ||
4757 | ||
4758 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
4759 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
4760 | since they contend in overloading in the same way. */ | |
4761 | static int | |
d12307c1 | 4762 | is_nonfunction (struct block_symbol syms[], int n) |
4c4b4cd2 PH |
4763 | { |
4764 | int i; | |
4765 | ||
4766 | for (i = 0; i < n; i += 1) | |
d12307c1 PMR |
4767 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_FUNC |
4768 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_ENUM | |
4769 | || SYMBOL_CLASS (syms[i].symbol) != LOC_CONST)) | |
14f9c5c9 AS |
4770 | return 1; |
4771 | ||
4772 | return 0; | |
4773 | } | |
4774 | ||
4775 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4776 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4777 | |
4778 | static int | |
d2e4a39e | 4779 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4780 | { |
d2e4a39e | 4781 | if (type0 == type1) |
14f9c5c9 | 4782 | return 1; |
d2e4a39e | 4783 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
4784 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
4785 | return 0; | |
d2e4a39e | 4786 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4787 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4788 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4789 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4790 | return 1; |
d2e4a39e | 4791 | |
14f9c5c9 AS |
4792 | return 0; |
4793 | } | |
4794 | ||
4795 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4796 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4797 | |
4798 | static int | |
d2e4a39e | 4799 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4800 | { |
4801 | if (sym0 == sym1) | |
4802 | return 1; | |
176620f1 | 4803 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4804 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4805 | return 0; | |
4806 | ||
d2e4a39e | 4807 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4808 | { |
4809 | case LOC_UNDEF: | |
4810 | return 1; | |
4811 | case LOC_TYPEDEF: | |
4812 | { | |
4c4b4cd2 PH |
4813 | struct type *type0 = SYMBOL_TYPE (sym0); |
4814 | struct type *type1 = SYMBOL_TYPE (sym1); | |
0d5cff50 DE |
4815 | const char *name0 = SYMBOL_LINKAGE_NAME (sym0); |
4816 | const char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4c4b4cd2 | 4817 | int len0 = strlen (name0); |
5b4ee69b | 4818 | |
4c4b4cd2 PH |
4819 | return |
4820 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4821 | && (equiv_types (type0, type1) | |
4822 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
61012eef | 4823 | && startswith (name1 + len0, "___XV"))); |
14f9c5c9 AS |
4824 | } |
4825 | case LOC_CONST: | |
4826 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4827 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4828 | default: |
4829 | return 0; | |
14f9c5c9 AS |
4830 | } |
4831 | } | |
4832 | ||
d12307c1 | 4833 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct block_symbol |
4c4b4cd2 | 4834 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ |
14f9c5c9 AS |
4835 | |
4836 | static void | |
76a01679 JB |
4837 | add_defn_to_vec (struct obstack *obstackp, |
4838 | struct symbol *sym, | |
f0c5f9b2 | 4839 | const struct block *block) |
14f9c5c9 AS |
4840 | { |
4841 | int i; | |
d12307c1 | 4842 | struct block_symbol *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4843 | |
529cad9c PH |
4844 | /* Do not try to complete stub types, as the debugger is probably |
4845 | already scanning all symbols matching a certain name at the | |
4846 | time when this function is called. Trying to replace the stub | |
4847 | type by its associated full type will cause us to restart a scan | |
4848 | which may lead to an infinite recursion. Instead, the client | |
4849 | collecting the matching symbols will end up collecting several | |
4850 | matches, with at least one of them complete. It can then filter | |
4851 | out the stub ones if needed. */ | |
4852 | ||
4c4b4cd2 PH |
4853 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4854 | { | |
d12307c1 | 4855 | if (lesseq_defined_than (sym, prevDefns[i].symbol)) |
4c4b4cd2 | 4856 | return; |
d12307c1 | 4857 | else if (lesseq_defined_than (prevDefns[i].symbol, sym)) |
4c4b4cd2 | 4858 | { |
d12307c1 | 4859 | prevDefns[i].symbol = sym; |
4c4b4cd2 | 4860 | prevDefns[i].block = block; |
4c4b4cd2 | 4861 | return; |
76a01679 | 4862 | } |
4c4b4cd2 PH |
4863 | } |
4864 | ||
4865 | { | |
d12307c1 | 4866 | struct block_symbol info; |
4c4b4cd2 | 4867 | |
d12307c1 | 4868 | info.symbol = sym; |
4c4b4cd2 | 4869 | info.block = block; |
d12307c1 | 4870 | obstack_grow (obstackp, &info, sizeof (struct block_symbol)); |
4c4b4cd2 PH |
4871 | } |
4872 | } | |
4873 | ||
d12307c1 PMR |
4874 | /* Number of block_symbol structures currently collected in current vector in |
4875 | OBSTACKP. */ | |
4c4b4cd2 | 4876 | |
76a01679 JB |
4877 | static int |
4878 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 | 4879 | { |
d12307c1 | 4880 | return obstack_object_size (obstackp) / sizeof (struct block_symbol); |
4c4b4cd2 PH |
4881 | } |
4882 | ||
d12307c1 PMR |
4883 | /* Vector of block_symbol structures currently collected in current vector in |
4884 | OBSTACKP. If FINISH, close off the vector and return its final address. */ | |
4c4b4cd2 | 4885 | |
d12307c1 | 4886 | static struct block_symbol * |
4c4b4cd2 PH |
4887 | defns_collected (struct obstack *obstackp, int finish) |
4888 | { | |
4889 | if (finish) | |
224c3ddb | 4890 | return (struct block_symbol *) obstack_finish (obstackp); |
4c4b4cd2 | 4891 | else |
d12307c1 | 4892 | return (struct block_symbol *) obstack_base (obstackp); |
4c4b4cd2 PH |
4893 | } |
4894 | ||
7c7b6655 TT |
4895 | /* Return a bound minimal symbol matching NAME according to Ada |
4896 | decoding rules. Returns an invalid symbol if there is no such | |
4897 | minimal symbol. Names prefixed with "standard__" are handled | |
4898 | specially: "standard__" is first stripped off, and only static and | |
4899 | global symbols are searched. */ | |
4c4b4cd2 | 4900 | |
7c7b6655 | 4901 | struct bound_minimal_symbol |
96d887e8 | 4902 | ada_lookup_simple_minsym (const char *name) |
4c4b4cd2 | 4903 | { |
7c7b6655 | 4904 | struct bound_minimal_symbol result; |
4c4b4cd2 | 4905 | |
7c7b6655 TT |
4906 | memset (&result, 0, sizeof (result)); |
4907 | ||
b5ec771e PA |
4908 | symbol_name_match_type match_type = name_match_type_from_name (name); |
4909 | lookup_name_info lookup_name (name, match_type); | |
4910 | ||
4911 | symbol_name_matcher_ftype *match_name | |
4912 | = ada_get_symbol_name_matcher (lookup_name); | |
4c4b4cd2 | 4913 | |
2030c079 | 4914 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4915 | { |
7932255d | 4916 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4917 | { |
4918 | if (match_name (MSYMBOL_LINKAGE_NAME (msymbol), lookup_name, NULL) | |
4919 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4920 | { | |
4921 | result.minsym = msymbol; | |
4922 | result.objfile = objfile; | |
4923 | break; | |
4924 | } | |
4925 | } | |
4926 | } | |
4c4b4cd2 | 4927 | |
7c7b6655 | 4928 | return result; |
96d887e8 | 4929 | } |
4c4b4cd2 | 4930 | |
2ff0a947 TT |
4931 | /* Return all the bound minimal symbols matching NAME according to Ada |
4932 | decoding rules. Returns an empty vector if there is no such | |
4933 | minimal symbol. Names prefixed with "standard__" are handled | |
4934 | specially: "standard__" is first stripped off, and only static and | |
4935 | global symbols are searched. */ | |
4936 | ||
4937 | static std::vector<struct bound_minimal_symbol> | |
4938 | ada_lookup_simple_minsyms (const char *name) | |
4939 | { | |
4940 | std::vector<struct bound_minimal_symbol> result; | |
4941 | ||
4942 | symbol_name_match_type match_type = name_match_type_from_name (name); | |
4943 | lookup_name_info lookup_name (name, match_type); | |
4944 | ||
4945 | symbol_name_matcher_ftype *match_name | |
4946 | = ada_get_symbol_name_matcher (lookup_name); | |
4947 | ||
4948 | for (objfile *objfile : current_program_space->objfiles ()) | |
4949 | { | |
4950 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
4951 | { | |
4952 | if (match_name (MSYMBOL_LINKAGE_NAME (msymbol), lookup_name, NULL) | |
4953 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4954 | result.push_back ({msymbol, objfile}); | |
4955 | } | |
4956 | } | |
4957 | ||
4958 | return result; | |
4959 | } | |
4960 | ||
96d887e8 PH |
4961 | /* For all subprograms that statically enclose the subprogram of the |
4962 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4963 | and their blocks to the list of data in OBSTACKP, as for | |
48b78332 JB |
4964 | ada_add_block_symbols (q.v.). If WILD_MATCH_P, treat as NAME |
4965 | with a wildcard prefix. */ | |
4c4b4cd2 | 4966 | |
96d887e8 PH |
4967 | static void |
4968 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
b5ec771e PA |
4969 | const lookup_name_info &lookup_name, |
4970 | domain_enum domain) | |
96d887e8 | 4971 | { |
96d887e8 | 4972 | } |
14f9c5c9 | 4973 | |
96d887e8 PH |
4974 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4975 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4976 | |
96d887e8 PH |
4977 | static int |
4978 | is_nondebugging_type (struct type *type) | |
4979 | { | |
0d5cff50 | 4980 | const char *name = ada_type_name (type); |
5b4ee69b | 4981 | |
96d887e8 PH |
4982 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); |
4983 | } | |
4c4b4cd2 | 4984 | |
8f17729f JB |
4985 | /* Return nonzero if TYPE1 and TYPE2 are two enumeration types |
4986 | that are deemed "identical" for practical purposes. | |
4987 | ||
4988 | This function assumes that TYPE1 and TYPE2 are both TYPE_CODE_ENUM | |
4989 | types and that their number of enumerals is identical (in other | |
4990 | words, TYPE_NFIELDS (type1) == TYPE_NFIELDS (type2)). */ | |
4991 | ||
4992 | static int | |
4993 | ada_identical_enum_types_p (struct type *type1, struct type *type2) | |
4994 | { | |
4995 | int i; | |
4996 | ||
4997 | /* The heuristic we use here is fairly conservative. We consider | |
4998 | that 2 enumerate types are identical if they have the same | |
4999 | number of enumerals and that all enumerals have the same | |
5000 | underlying value and name. */ | |
5001 | ||
5002 | /* All enums in the type should have an identical underlying value. */ | |
5003 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
14e75d8e | 5004 | if (TYPE_FIELD_ENUMVAL (type1, i) != TYPE_FIELD_ENUMVAL (type2, i)) |
8f17729f JB |
5005 | return 0; |
5006 | ||
5007 | /* All enumerals should also have the same name (modulo any numerical | |
5008 | suffix). */ | |
5009 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
5010 | { | |
0d5cff50 DE |
5011 | const char *name_1 = TYPE_FIELD_NAME (type1, i); |
5012 | const char *name_2 = TYPE_FIELD_NAME (type2, i); | |
8f17729f JB |
5013 | int len_1 = strlen (name_1); |
5014 | int len_2 = strlen (name_2); | |
5015 | ||
5016 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type1, i), &len_1); | |
5017 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type2, i), &len_2); | |
5018 | if (len_1 != len_2 | |
5019 | || strncmp (TYPE_FIELD_NAME (type1, i), | |
5020 | TYPE_FIELD_NAME (type2, i), | |
5021 | len_1) != 0) | |
5022 | return 0; | |
5023 | } | |
5024 | ||
5025 | return 1; | |
5026 | } | |
5027 | ||
5028 | /* Return nonzero if all the symbols in SYMS are all enumeral symbols | |
5029 | that are deemed "identical" for practical purposes. Sometimes, | |
5030 | enumerals are not strictly identical, but their types are so similar | |
5031 | that they can be considered identical. | |
5032 | ||
5033 | For instance, consider the following code: | |
5034 | ||
5035 | type Color is (Black, Red, Green, Blue, White); | |
5036 | type RGB_Color is new Color range Red .. Blue; | |
5037 | ||
5038 | Type RGB_Color is a subrange of an implicit type which is a copy | |
5039 | of type Color. If we call that implicit type RGB_ColorB ("B" is | |
5040 | for "Base Type"), then type RGB_ColorB is a copy of type Color. | |
5041 | As a result, when an expression references any of the enumeral | |
5042 | by name (Eg. "print green"), the expression is technically | |
5043 | ambiguous and the user should be asked to disambiguate. But | |
5044 | doing so would only hinder the user, since it wouldn't matter | |
5045 | what choice he makes, the outcome would always be the same. | |
5046 | So, for practical purposes, we consider them as the same. */ | |
5047 | ||
5048 | static int | |
54d343a2 | 5049 | symbols_are_identical_enums (const std::vector<struct block_symbol> &syms) |
8f17729f JB |
5050 | { |
5051 | int i; | |
5052 | ||
5053 | /* Before performing a thorough comparison check of each type, | |
5054 | we perform a series of inexpensive checks. We expect that these | |
5055 | checks will quickly fail in the vast majority of cases, and thus | |
5056 | help prevent the unnecessary use of a more expensive comparison. | |
5057 | Said comparison also expects us to make some of these checks | |
5058 | (see ada_identical_enum_types_p). */ | |
5059 | ||
5060 | /* Quick check: All symbols should have an enum type. */ | |
54d343a2 | 5061 | for (i = 0; i < syms.size (); i++) |
d12307c1 | 5062 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_ENUM) |
8f17729f JB |
5063 | return 0; |
5064 | ||
5065 | /* Quick check: They should all have the same value. */ | |
54d343a2 | 5066 | for (i = 1; i < syms.size (); i++) |
d12307c1 | 5067 | if (SYMBOL_VALUE (syms[i].symbol) != SYMBOL_VALUE (syms[0].symbol)) |
8f17729f JB |
5068 | return 0; |
5069 | ||
5070 | /* Quick check: They should all have the same number of enumerals. */ | |
54d343a2 | 5071 | for (i = 1; i < syms.size (); i++) |
d12307c1 PMR |
5072 | if (TYPE_NFIELDS (SYMBOL_TYPE (syms[i].symbol)) |
5073 | != TYPE_NFIELDS (SYMBOL_TYPE (syms[0].symbol))) | |
8f17729f JB |
5074 | return 0; |
5075 | ||
5076 | /* All the sanity checks passed, so we might have a set of | |
5077 | identical enumeration types. Perform a more complete | |
5078 | comparison of the type of each symbol. */ | |
54d343a2 | 5079 | for (i = 1; i < syms.size (); i++) |
d12307c1 PMR |
5080 | if (!ada_identical_enum_types_p (SYMBOL_TYPE (syms[i].symbol), |
5081 | SYMBOL_TYPE (syms[0].symbol))) | |
8f17729f JB |
5082 | return 0; |
5083 | ||
5084 | return 1; | |
5085 | } | |
5086 | ||
54d343a2 | 5087 | /* Remove any non-debugging symbols in SYMS that definitely |
96d887e8 PH |
5088 | duplicate other symbols in the list (The only case I know of where |
5089 | this happens is when object files containing stabs-in-ecoff are | |
5090 | linked with files containing ordinary ecoff debugging symbols (or no | |
5091 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
5092 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 5093 | |
96d887e8 | 5094 | static int |
54d343a2 | 5095 | remove_extra_symbols (std::vector<struct block_symbol> *syms) |
96d887e8 PH |
5096 | { |
5097 | int i, j; | |
4c4b4cd2 | 5098 | |
8f17729f JB |
5099 | /* We should never be called with less than 2 symbols, as there |
5100 | cannot be any extra symbol in that case. But it's easy to | |
5101 | handle, since we have nothing to do in that case. */ | |
54d343a2 TT |
5102 | if (syms->size () < 2) |
5103 | return syms->size (); | |
8f17729f | 5104 | |
96d887e8 | 5105 | i = 0; |
54d343a2 | 5106 | while (i < syms->size ()) |
96d887e8 | 5107 | { |
a35ddb44 | 5108 | int remove_p = 0; |
339c13b6 JB |
5109 | |
5110 | /* If two symbols have the same name and one of them is a stub type, | |
5111 | the get rid of the stub. */ | |
5112 | ||
54d343a2 TT |
5113 | if (TYPE_STUB (SYMBOL_TYPE ((*syms)[i].symbol)) |
5114 | && SYMBOL_LINKAGE_NAME ((*syms)[i].symbol) != NULL) | |
339c13b6 | 5115 | { |
54d343a2 | 5116 | for (j = 0; j < syms->size (); j++) |
339c13b6 JB |
5117 | { |
5118 | if (j != i | |
54d343a2 TT |
5119 | && !TYPE_STUB (SYMBOL_TYPE ((*syms)[j].symbol)) |
5120 | && SYMBOL_LINKAGE_NAME ((*syms)[j].symbol) != NULL | |
5121 | && strcmp (SYMBOL_LINKAGE_NAME ((*syms)[i].symbol), | |
5122 | SYMBOL_LINKAGE_NAME ((*syms)[j].symbol)) == 0) | |
a35ddb44 | 5123 | remove_p = 1; |
339c13b6 JB |
5124 | } |
5125 | } | |
5126 | ||
5127 | /* Two symbols with the same name, same class and same address | |
5128 | should be identical. */ | |
5129 | ||
54d343a2 TT |
5130 | else if (SYMBOL_LINKAGE_NAME ((*syms)[i].symbol) != NULL |
5131 | && SYMBOL_CLASS ((*syms)[i].symbol) == LOC_STATIC | |
5132 | && is_nondebugging_type (SYMBOL_TYPE ((*syms)[i].symbol))) | |
96d887e8 | 5133 | { |
54d343a2 | 5134 | for (j = 0; j < syms->size (); j += 1) |
96d887e8 PH |
5135 | { |
5136 | if (i != j | |
54d343a2 TT |
5137 | && SYMBOL_LINKAGE_NAME ((*syms)[j].symbol) != NULL |
5138 | && strcmp (SYMBOL_LINKAGE_NAME ((*syms)[i].symbol), | |
5139 | SYMBOL_LINKAGE_NAME ((*syms)[j].symbol)) == 0 | |
5140 | && SYMBOL_CLASS ((*syms)[i].symbol) | |
5141 | == SYMBOL_CLASS ((*syms)[j].symbol) | |
5142 | && SYMBOL_VALUE_ADDRESS ((*syms)[i].symbol) | |
5143 | == SYMBOL_VALUE_ADDRESS ((*syms)[j].symbol)) | |
a35ddb44 | 5144 | remove_p = 1; |
4c4b4cd2 | 5145 | } |
4c4b4cd2 | 5146 | } |
339c13b6 | 5147 | |
a35ddb44 | 5148 | if (remove_p) |
54d343a2 | 5149 | syms->erase (syms->begin () + i); |
339c13b6 | 5150 | |
96d887e8 | 5151 | i += 1; |
14f9c5c9 | 5152 | } |
8f17729f JB |
5153 | |
5154 | /* If all the remaining symbols are identical enumerals, then | |
5155 | just keep the first one and discard the rest. | |
5156 | ||
5157 | Unlike what we did previously, we do not discard any entry | |
5158 | unless they are ALL identical. This is because the symbol | |
5159 | comparison is not a strict comparison, but rather a practical | |
5160 | comparison. If all symbols are considered identical, then | |
5161 | we can just go ahead and use the first one and discard the rest. | |
5162 | But if we cannot reduce the list to a single element, we have | |
5163 | to ask the user to disambiguate anyways. And if we have to | |
5164 | present a multiple-choice menu, it's less confusing if the list | |
5165 | isn't missing some choices that were identical and yet distinct. */ | |
54d343a2 TT |
5166 | if (symbols_are_identical_enums (*syms)) |
5167 | syms->resize (1); | |
8f17729f | 5168 | |
54d343a2 | 5169 | return syms->size (); |
14f9c5c9 AS |
5170 | } |
5171 | ||
96d887e8 PH |
5172 | /* Given a type that corresponds to a renaming entity, use the type name |
5173 | to extract the scope (package name or function name, fully qualified, | |
5174 | and following the GNAT encoding convention) where this renaming has been | |
49d83361 | 5175 | defined. */ |
4c4b4cd2 | 5176 | |
49d83361 | 5177 | static std::string |
96d887e8 | 5178 | xget_renaming_scope (struct type *renaming_type) |
14f9c5c9 | 5179 | { |
96d887e8 | 5180 | /* The renaming types adhere to the following convention: |
0963b4bd | 5181 | <scope>__<rename>___<XR extension>. |
96d887e8 PH |
5182 | So, to extract the scope, we search for the "___XR" extension, |
5183 | and then backtrack until we find the first "__". */ | |
76a01679 | 5184 | |
a737d952 | 5185 | const char *name = TYPE_NAME (renaming_type); |
108d56a4 SM |
5186 | const char *suffix = strstr (name, "___XR"); |
5187 | const char *last; | |
14f9c5c9 | 5188 | |
96d887e8 PH |
5189 | /* Now, backtrack a bit until we find the first "__". Start looking |
5190 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 5191 | |
96d887e8 PH |
5192 | for (last = suffix - 3; last > name; last--) |
5193 | if (last[0] == '_' && last[1] == '_') | |
5194 | break; | |
76a01679 | 5195 | |
96d887e8 | 5196 | /* Make a copy of scope and return it. */ |
49d83361 | 5197 | return std::string (name, last); |
4c4b4cd2 PH |
5198 | } |
5199 | ||
96d887e8 | 5200 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 5201 | |
96d887e8 PH |
5202 | static int |
5203 | is_package_name (const char *name) | |
4c4b4cd2 | 5204 | { |
96d887e8 PH |
5205 | /* Here, We take advantage of the fact that no symbols are generated |
5206 | for packages, while symbols are generated for each function. | |
5207 | So the condition for NAME represent a package becomes equivalent | |
5208 | to NAME not existing in our list of symbols. There is only one | |
5209 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 5210 | |
96d887e8 PH |
5211 | /* If it is a function that has not been defined at library level, |
5212 | then we should be able to look it up in the symbols. */ | |
5213 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
5214 | return 0; | |
14f9c5c9 | 5215 | |
96d887e8 PH |
5216 | /* Library-level function names start with "_ada_". See if function |
5217 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 5218 | |
96d887e8 | 5219 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 5220 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
5221 | if (strstr (name, "__") != NULL) |
5222 | return 0; | |
4c4b4cd2 | 5223 | |
528e1572 | 5224 | std::string fun_name = string_printf ("_ada_%s", name); |
14f9c5c9 | 5225 | |
528e1572 | 5226 | return (standard_lookup (fun_name.c_str (), NULL, VAR_DOMAIN) == NULL); |
96d887e8 | 5227 | } |
14f9c5c9 | 5228 | |
96d887e8 | 5229 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 5230 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 5231 | |
96d887e8 | 5232 | static int |
0d5cff50 | 5233 | old_renaming_is_invisible (const struct symbol *sym, const char *function_name) |
96d887e8 | 5234 | { |
aeb5907d JB |
5235 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
5236 | return 0; | |
5237 | ||
49d83361 | 5238 | std::string scope = xget_renaming_scope (SYMBOL_TYPE (sym)); |
14f9c5c9 | 5239 | |
96d887e8 | 5240 | /* If the rename has been defined in a package, then it is visible. */ |
49d83361 TT |
5241 | if (is_package_name (scope.c_str ())) |
5242 | return 0; | |
14f9c5c9 | 5243 | |
96d887e8 PH |
5244 | /* Check that the rename is in the current function scope by checking |
5245 | that its name starts with SCOPE. */ | |
76a01679 | 5246 | |
96d887e8 PH |
5247 | /* If the function name starts with "_ada_", it means that it is |
5248 | a library-level function. Strip this prefix before doing the | |
5249 | comparison, as the encoding for the renaming does not contain | |
5250 | this prefix. */ | |
61012eef | 5251 | if (startswith (function_name, "_ada_")) |
96d887e8 | 5252 | function_name += 5; |
f26caa11 | 5253 | |
49d83361 | 5254 | return !startswith (function_name, scope.c_str ()); |
f26caa11 PH |
5255 | } |
5256 | ||
aeb5907d JB |
5257 | /* Remove entries from SYMS that corresponds to a renaming entity that |
5258 | is not visible from the function associated with CURRENT_BLOCK or | |
5259 | that is superfluous due to the presence of more specific renaming | |
5260 | information. Places surviving symbols in the initial entries of | |
5261 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
5262 | |
5263 | Rationale: | |
aeb5907d JB |
5264 | First, in cases where an object renaming is implemented as a |
5265 | reference variable, GNAT may produce both the actual reference | |
5266 | variable and the renaming encoding. In this case, we discard the | |
5267 | latter. | |
5268 | ||
5269 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
5270 | entity. Unfortunately, STABS currently does not support the definition |
5271 | of types that are local to a given lexical block, so all renamings types | |
5272 | are emitted at library level. As a consequence, if an application | |
5273 | contains two renaming entities using the same name, and a user tries to | |
5274 | print the value of one of these entities, the result of the ada symbol | |
5275 | lookup will also contain the wrong renaming type. | |
f26caa11 | 5276 | |
96d887e8 PH |
5277 | This function partially covers for this limitation by attempting to |
5278 | remove from the SYMS list renaming symbols that should be visible | |
5279 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
5280 | method with the current information available. The implementation | |
5281 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
5282 | ||
5283 | - When the user tries to print a rename in a function while there | |
5284 | is another rename entity defined in a package: Normally, the | |
5285 | rename in the function has precedence over the rename in the | |
5286 | package, so the latter should be removed from the list. This is | |
5287 | currently not the case. | |
5288 | ||
5289 | - This function will incorrectly remove valid renames if | |
5290 | the CURRENT_BLOCK corresponds to a function which symbol name | |
5291 | has been changed by an "Export" pragma. As a consequence, | |
5292 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 5293 | |
14f9c5c9 | 5294 | static int |
54d343a2 TT |
5295 | remove_irrelevant_renamings (std::vector<struct block_symbol> *syms, |
5296 | const struct block *current_block) | |
4c4b4cd2 PH |
5297 | { |
5298 | struct symbol *current_function; | |
0d5cff50 | 5299 | const char *current_function_name; |
4c4b4cd2 | 5300 | int i; |
aeb5907d JB |
5301 | int is_new_style_renaming; |
5302 | ||
5303 | /* If there is both a renaming foo___XR... encoded as a variable and | |
5304 | a simple variable foo in the same block, discard the latter. | |
0963b4bd | 5305 | First, zero out such symbols, then compress. */ |
aeb5907d | 5306 | is_new_style_renaming = 0; |
54d343a2 | 5307 | for (i = 0; i < syms->size (); i += 1) |
aeb5907d | 5308 | { |
54d343a2 TT |
5309 | struct symbol *sym = (*syms)[i].symbol; |
5310 | const struct block *block = (*syms)[i].block; | |
aeb5907d JB |
5311 | const char *name; |
5312 | const char *suffix; | |
5313 | ||
5314 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5315 | continue; | |
5316 | name = SYMBOL_LINKAGE_NAME (sym); | |
5317 | suffix = strstr (name, "___XR"); | |
5318 | ||
5319 | if (suffix != NULL) | |
5320 | { | |
5321 | int name_len = suffix - name; | |
5322 | int j; | |
5b4ee69b | 5323 | |
aeb5907d | 5324 | is_new_style_renaming = 1; |
54d343a2 TT |
5325 | for (j = 0; j < syms->size (); j += 1) |
5326 | if (i != j && (*syms)[j].symbol != NULL | |
5327 | && strncmp (name, SYMBOL_LINKAGE_NAME ((*syms)[j].symbol), | |
aeb5907d | 5328 | name_len) == 0 |
54d343a2 TT |
5329 | && block == (*syms)[j].block) |
5330 | (*syms)[j].symbol = NULL; | |
aeb5907d JB |
5331 | } |
5332 | } | |
5333 | if (is_new_style_renaming) | |
5334 | { | |
5335 | int j, k; | |
5336 | ||
54d343a2 TT |
5337 | for (j = k = 0; j < syms->size (); j += 1) |
5338 | if ((*syms)[j].symbol != NULL) | |
aeb5907d | 5339 | { |
54d343a2 | 5340 | (*syms)[k] = (*syms)[j]; |
aeb5907d JB |
5341 | k += 1; |
5342 | } | |
5343 | return k; | |
5344 | } | |
4c4b4cd2 PH |
5345 | |
5346 | /* Extract the function name associated to CURRENT_BLOCK. | |
5347 | Abort if unable to do so. */ | |
76a01679 | 5348 | |
4c4b4cd2 | 5349 | if (current_block == NULL) |
54d343a2 | 5350 | return syms->size (); |
76a01679 | 5351 | |
7f0df278 | 5352 | current_function = block_linkage_function (current_block); |
4c4b4cd2 | 5353 | if (current_function == NULL) |
54d343a2 | 5354 | return syms->size (); |
4c4b4cd2 PH |
5355 | |
5356 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
5357 | if (current_function_name == NULL) | |
54d343a2 | 5358 | return syms->size (); |
4c4b4cd2 PH |
5359 | |
5360 | /* Check each of the symbols, and remove it from the list if it is | |
5361 | a type corresponding to a renaming that is out of the scope of | |
5362 | the current block. */ | |
5363 | ||
5364 | i = 0; | |
54d343a2 | 5365 | while (i < syms->size ()) |
4c4b4cd2 | 5366 | { |
54d343a2 | 5367 | if (ada_parse_renaming ((*syms)[i].symbol, NULL, NULL, NULL) |
aeb5907d | 5368 | == ADA_OBJECT_RENAMING |
54d343a2 TT |
5369 | && old_renaming_is_invisible ((*syms)[i].symbol, |
5370 | current_function_name)) | |
5371 | syms->erase (syms->begin () + i); | |
4c4b4cd2 PH |
5372 | else |
5373 | i += 1; | |
5374 | } | |
5375 | ||
54d343a2 | 5376 | return syms->size (); |
4c4b4cd2 PH |
5377 | } |
5378 | ||
339c13b6 JB |
5379 | /* Add to OBSTACKP all symbols from BLOCK (and its super-blocks) |
5380 | whose name and domain match NAME and DOMAIN respectively. | |
5381 | If no match was found, then extend the search to "enclosing" | |
5382 | routines (in other words, if we're inside a nested function, | |
5383 | search the symbols defined inside the enclosing functions). | |
d0a8ab18 JB |
5384 | If WILD_MATCH_P is nonzero, perform the naming matching in |
5385 | "wild" mode (see function "wild_match" for more info). | |
339c13b6 JB |
5386 | |
5387 | Note: This function assumes that OBSTACKP has 0 (zero) element in it. */ | |
5388 | ||
5389 | static void | |
b5ec771e PA |
5390 | ada_add_local_symbols (struct obstack *obstackp, |
5391 | const lookup_name_info &lookup_name, | |
5392 | const struct block *block, domain_enum domain) | |
339c13b6 JB |
5393 | { |
5394 | int block_depth = 0; | |
5395 | ||
5396 | while (block != NULL) | |
5397 | { | |
5398 | block_depth += 1; | |
b5ec771e | 5399 | ada_add_block_symbols (obstackp, block, lookup_name, domain, NULL); |
339c13b6 JB |
5400 | |
5401 | /* If we found a non-function match, assume that's the one. */ | |
5402 | if (is_nonfunction (defns_collected (obstackp, 0), | |
5403 | num_defns_collected (obstackp))) | |
5404 | return; | |
5405 | ||
5406 | block = BLOCK_SUPERBLOCK (block); | |
5407 | } | |
5408 | ||
5409 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
5410 | enclosing subprogram. */ | |
5411 | if (num_defns_collected (obstackp) == 0 && block_depth > 2) | |
b5ec771e | 5412 | add_symbols_from_enclosing_procs (obstackp, lookup_name, domain); |
339c13b6 JB |
5413 | } |
5414 | ||
ccefe4c4 | 5415 | /* An object of this type is used as the user_data argument when |
40658b94 | 5416 | calling the map_matching_symbols method. */ |
ccefe4c4 | 5417 | |
40658b94 | 5418 | struct match_data |
ccefe4c4 | 5419 | { |
40658b94 | 5420 | struct objfile *objfile; |
ccefe4c4 | 5421 | struct obstack *obstackp; |
40658b94 PH |
5422 | struct symbol *arg_sym; |
5423 | int found_sym; | |
ccefe4c4 TT |
5424 | }; |
5425 | ||
22cee43f | 5426 | /* A callback for add_nonlocal_symbols that adds SYM, found in BLOCK, |
40658b94 PH |
5427 | to a list of symbols. DATA0 is a pointer to a struct match_data * |
5428 | containing the obstack that collects the symbol list, the file that SYM | |
5429 | must come from, a flag indicating whether a non-argument symbol has | |
5430 | been found in the current block, and the last argument symbol | |
5431 | passed in SYM within the current block (if any). When SYM is null, | |
5432 | marking the end of a block, the argument symbol is added if no | |
5433 | other has been found. */ | |
ccefe4c4 | 5434 | |
40658b94 | 5435 | static int |
582942f4 TT |
5436 | aux_add_nonlocal_symbols (const struct block *block, struct symbol *sym, |
5437 | void *data0) | |
ccefe4c4 | 5438 | { |
40658b94 PH |
5439 | struct match_data *data = (struct match_data *) data0; |
5440 | ||
5441 | if (sym == NULL) | |
5442 | { | |
5443 | if (!data->found_sym && data->arg_sym != NULL) | |
5444 | add_defn_to_vec (data->obstackp, | |
5445 | fixup_symbol_section (data->arg_sym, data->objfile), | |
5446 | block); | |
5447 | data->found_sym = 0; | |
5448 | data->arg_sym = NULL; | |
5449 | } | |
5450 | else | |
5451 | { | |
5452 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) | |
5453 | return 0; | |
5454 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
5455 | data->arg_sym = sym; | |
5456 | else | |
5457 | { | |
5458 | data->found_sym = 1; | |
5459 | add_defn_to_vec (data->obstackp, | |
5460 | fixup_symbol_section (sym, data->objfile), | |
5461 | block); | |
5462 | } | |
5463 | } | |
5464 | return 0; | |
5465 | } | |
5466 | ||
b5ec771e PA |
5467 | /* Helper for add_nonlocal_symbols. Find symbols in DOMAIN which are |
5468 | targeted by renamings matching LOOKUP_NAME in BLOCK. Add these | |
5469 | symbols to OBSTACKP. Return whether we found such symbols. */ | |
22cee43f PMR |
5470 | |
5471 | static int | |
5472 | ada_add_block_renamings (struct obstack *obstackp, | |
5473 | const struct block *block, | |
b5ec771e PA |
5474 | const lookup_name_info &lookup_name, |
5475 | domain_enum domain) | |
22cee43f PMR |
5476 | { |
5477 | struct using_direct *renaming; | |
5478 | int defns_mark = num_defns_collected (obstackp); | |
5479 | ||
b5ec771e PA |
5480 | symbol_name_matcher_ftype *name_match |
5481 | = ada_get_symbol_name_matcher (lookup_name); | |
5482 | ||
22cee43f PMR |
5483 | for (renaming = block_using (block); |
5484 | renaming != NULL; | |
5485 | renaming = renaming->next) | |
5486 | { | |
5487 | const char *r_name; | |
22cee43f PMR |
5488 | |
5489 | /* Avoid infinite recursions: skip this renaming if we are actually | |
5490 | already traversing it. | |
5491 | ||
5492 | Currently, symbol lookup in Ada don't use the namespace machinery from | |
5493 | C++/Fortran support: skip namespace imports that use them. */ | |
5494 | if (renaming->searched | |
5495 | || (renaming->import_src != NULL | |
5496 | && renaming->import_src[0] != '\0') | |
5497 | || (renaming->import_dest != NULL | |
5498 | && renaming->import_dest[0] != '\0')) | |
5499 | continue; | |
5500 | renaming->searched = 1; | |
5501 | ||
5502 | /* TODO: here, we perform another name-based symbol lookup, which can | |
5503 | pull its own multiple overloads. In theory, we should be able to do | |
5504 | better in this case since, in DWARF, DW_AT_import is a DIE reference, | |
5505 | not a simple name. But in order to do this, we would need to enhance | |
5506 | the DWARF reader to associate a symbol to this renaming, instead of a | |
5507 | name. So, for now, we do something simpler: re-use the C++/Fortran | |
5508 | namespace machinery. */ | |
5509 | r_name = (renaming->alias != NULL | |
5510 | ? renaming->alias | |
5511 | : renaming->declaration); | |
b5ec771e PA |
5512 | if (name_match (r_name, lookup_name, NULL)) |
5513 | { | |
5514 | lookup_name_info decl_lookup_name (renaming->declaration, | |
5515 | lookup_name.match_type ()); | |
5516 | ada_add_all_symbols (obstackp, block, decl_lookup_name, domain, | |
5517 | 1, NULL); | |
5518 | } | |
22cee43f PMR |
5519 | renaming->searched = 0; |
5520 | } | |
5521 | return num_defns_collected (obstackp) != defns_mark; | |
5522 | } | |
5523 | ||
db230ce3 JB |
5524 | /* Implements compare_names, but only applying the comparision using |
5525 | the given CASING. */ | |
5b4ee69b | 5526 | |
40658b94 | 5527 | static int |
db230ce3 JB |
5528 | compare_names_with_case (const char *string1, const char *string2, |
5529 | enum case_sensitivity casing) | |
40658b94 PH |
5530 | { |
5531 | while (*string1 != '\0' && *string2 != '\0') | |
5532 | { | |
db230ce3 JB |
5533 | char c1, c2; |
5534 | ||
40658b94 PH |
5535 | if (isspace (*string1) || isspace (*string2)) |
5536 | return strcmp_iw_ordered (string1, string2); | |
db230ce3 JB |
5537 | |
5538 | if (casing == case_sensitive_off) | |
5539 | { | |
5540 | c1 = tolower (*string1); | |
5541 | c2 = tolower (*string2); | |
5542 | } | |
5543 | else | |
5544 | { | |
5545 | c1 = *string1; | |
5546 | c2 = *string2; | |
5547 | } | |
5548 | if (c1 != c2) | |
40658b94 | 5549 | break; |
db230ce3 | 5550 | |
40658b94 PH |
5551 | string1 += 1; |
5552 | string2 += 1; | |
5553 | } | |
db230ce3 | 5554 | |
40658b94 PH |
5555 | switch (*string1) |
5556 | { | |
5557 | case '(': | |
5558 | return strcmp_iw_ordered (string1, string2); | |
5559 | case '_': | |
5560 | if (*string2 == '\0') | |
5561 | { | |
052874e8 | 5562 | if (is_name_suffix (string1)) |
40658b94 PH |
5563 | return 0; |
5564 | else | |
1a1d5513 | 5565 | return 1; |
40658b94 | 5566 | } |
dbb8534f | 5567 | /* FALLTHROUGH */ |
40658b94 PH |
5568 | default: |
5569 | if (*string2 == '(') | |
5570 | return strcmp_iw_ordered (string1, string2); | |
5571 | else | |
db230ce3 JB |
5572 | { |
5573 | if (casing == case_sensitive_off) | |
5574 | return tolower (*string1) - tolower (*string2); | |
5575 | else | |
5576 | return *string1 - *string2; | |
5577 | } | |
40658b94 | 5578 | } |
ccefe4c4 TT |
5579 | } |
5580 | ||
db230ce3 JB |
5581 | /* Compare STRING1 to STRING2, with results as for strcmp. |
5582 | Compatible with strcmp_iw_ordered in that... | |
5583 | ||
5584 | strcmp_iw_ordered (STRING1, STRING2) <= 0 | |
5585 | ||
5586 | ... implies... | |
5587 | ||
5588 | compare_names (STRING1, STRING2) <= 0 | |
5589 | ||
5590 | (they may differ as to what symbols compare equal). */ | |
5591 | ||
5592 | static int | |
5593 | compare_names (const char *string1, const char *string2) | |
5594 | { | |
5595 | int result; | |
5596 | ||
5597 | /* Similar to what strcmp_iw_ordered does, we need to perform | |
5598 | a case-insensitive comparison first, and only resort to | |
5599 | a second, case-sensitive, comparison if the first one was | |
5600 | not sufficient to differentiate the two strings. */ | |
5601 | ||
5602 | result = compare_names_with_case (string1, string2, case_sensitive_off); | |
5603 | if (result == 0) | |
5604 | result = compare_names_with_case (string1, string2, case_sensitive_on); | |
5605 | ||
5606 | return result; | |
5607 | } | |
5608 | ||
b5ec771e PA |
5609 | /* Convenience function to get at the Ada encoded lookup name for |
5610 | LOOKUP_NAME, as a C string. */ | |
5611 | ||
5612 | static const char * | |
5613 | ada_lookup_name (const lookup_name_info &lookup_name) | |
5614 | { | |
5615 | return lookup_name.ada ().lookup_name ().c_str (); | |
5616 | } | |
5617 | ||
339c13b6 | 5618 | /* Add to OBSTACKP all non-local symbols whose name and domain match |
b5ec771e PA |
5619 | LOOKUP_NAME and DOMAIN respectively. The search is performed on |
5620 | GLOBAL_BLOCK symbols if GLOBAL is non-zero, or on STATIC_BLOCK | |
5621 | symbols otherwise. */ | |
339c13b6 JB |
5622 | |
5623 | static void | |
b5ec771e PA |
5624 | add_nonlocal_symbols (struct obstack *obstackp, |
5625 | const lookup_name_info &lookup_name, | |
5626 | domain_enum domain, int global) | |
339c13b6 | 5627 | { |
40658b94 | 5628 | struct match_data data; |
339c13b6 | 5629 | |
6475f2fe | 5630 | memset (&data, 0, sizeof data); |
ccefe4c4 | 5631 | data.obstackp = obstackp; |
339c13b6 | 5632 | |
b5ec771e PA |
5633 | bool is_wild_match = lookup_name.ada ().wild_match_p (); |
5634 | ||
2030c079 | 5635 | for (objfile *objfile : current_program_space->objfiles ()) |
40658b94 PH |
5636 | { |
5637 | data.objfile = objfile; | |
5638 | ||
5639 | if (is_wild_match) | |
b5ec771e PA |
5640 | objfile->sf->qf->map_matching_symbols (objfile, lookup_name.name ().c_str (), |
5641 | domain, global, | |
4186eb54 | 5642 | aux_add_nonlocal_symbols, &data, |
b5ec771e PA |
5643 | symbol_name_match_type::WILD, |
5644 | NULL); | |
40658b94 | 5645 | else |
b5ec771e PA |
5646 | objfile->sf->qf->map_matching_symbols (objfile, lookup_name.name ().c_str (), |
5647 | domain, global, | |
4186eb54 | 5648 | aux_add_nonlocal_symbols, &data, |
b5ec771e PA |
5649 | symbol_name_match_type::FULL, |
5650 | compare_names); | |
22cee43f | 5651 | |
b669c953 | 5652 | for (compunit_symtab *cu : objfile->compunits ()) |
22cee43f PMR |
5653 | { |
5654 | const struct block *global_block | |
5655 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cu), GLOBAL_BLOCK); | |
5656 | ||
b5ec771e PA |
5657 | if (ada_add_block_renamings (obstackp, global_block, lookup_name, |
5658 | domain)) | |
22cee43f PMR |
5659 | data.found_sym = 1; |
5660 | } | |
40658b94 PH |
5661 | } |
5662 | ||
5663 | if (num_defns_collected (obstackp) == 0 && global && !is_wild_match) | |
5664 | { | |
b5ec771e PA |
5665 | const char *name = ada_lookup_name (lookup_name); |
5666 | std::string name1 = std::string ("<_ada_") + name + '>'; | |
5667 | ||
2030c079 | 5668 | for (objfile *objfile : current_program_space->objfiles ()) |
40658b94 | 5669 | { |
40658b94 | 5670 | data.objfile = objfile; |
b5ec771e PA |
5671 | objfile->sf->qf->map_matching_symbols (objfile, name1.c_str (), |
5672 | domain, global, | |
0963b4bd MS |
5673 | aux_add_nonlocal_symbols, |
5674 | &data, | |
b5ec771e PA |
5675 | symbol_name_match_type::FULL, |
5676 | compare_names); | |
40658b94 PH |
5677 | } |
5678 | } | |
339c13b6 JB |
5679 | } |
5680 | ||
b5ec771e PA |
5681 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if |
5682 | FULL_SEARCH is non-zero, enclosing scope and in global scopes, | |
5683 | returning the number of matches. Add these to OBSTACKP. | |
4eeaa230 | 5684 | |
22cee43f PMR |
5685 | When FULL_SEARCH is non-zero, any non-function/non-enumeral |
5686 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
4c4b4cd2 | 5687 | is the one match returned (no other matches in that or |
d9680e73 | 5688 | enclosing blocks is returned). If there are any matches in or |
22cee43f | 5689 | surrounding BLOCK, then these alone are returned. |
4eeaa230 | 5690 | |
b5ec771e PA |
5691 | Names prefixed with "standard__" are handled specially: |
5692 | "standard__" is first stripped off (by the lookup_name | |
5693 | constructor), and only static and global symbols are searched. | |
14f9c5c9 | 5694 | |
22cee43f PMR |
5695 | If MADE_GLOBAL_LOOKUP_P is non-null, set it before return to whether we had |
5696 | to lookup global symbols. */ | |
5697 | ||
5698 | static void | |
5699 | ada_add_all_symbols (struct obstack *obstackp, | |
5700 | const struct block *block, | |
b5ec771e | 5701 | const lookup_name_info &lookup_name, |
22cee43f PMR |
5702 | domain_enum domain, |
5703 | int full_search, | |
5704 | int *made_global_lookup_p) | |
14f9c5c9 AS |
5705 | { |
5706 | struct symbol *sym; | |
14f9c5c9 | 5707 | |
22cee43f PMR |
5708 | if (made_global_lookup_p) |
5709 | *made_global_lookup_p = 0; | |
339c13b6 JB |
5710 | |
5711 | /* Special case: If the user specifies a symbol name inside package | |
5712 | Standard, do a non-wild matching of the symbol name without | |
5713 | the "standard__" prefix. This was primarily introduced in order | |
5714 | to allow the user to specifically access the standard exceptions | |
5715 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
5716 | is ambiguous (due to the user defining its own Constraint_Error | |
5717 | entity inside its program). */ | |
b5ec771e PA |
5718 | if (lookup_name.ada ().standard_p ()) |
5719 | block = NULL; | |
4c4b4cd2 | 5720 | |
339c13b6 | 5721 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 5722 | |
4eeaa230 DE |
5723 | if (block != NULL) |
5724 | { | |
5725 | if (full_search) | |
b5ec771e | 5726 | ada_add_local_symbols (obstackp, lookup_name, block, domain); |
4eeaa230 DE |
5727 | else |
5728 | { | |
5729 | /* In the !full_search case we're are being called by | |
5730 | ada_iterate_over_symbols, and we don't want to search | |
5731 | superblocks. */ | |
b5ec771e | 5732 | ada_add_block_symbols (obstackp, block, lookup_name, domain, NULL); |
4eeaa230 | 5733 | } |
22cee43f PMR |
5734 | if (num_defns_collected (obstackp) > 0 || !full_search) |
5735 | return; | |
4eeaa230 | 5736 | } |
d2e4a39e | 5737 | |
339c13b6 JB |
5738 | /* No non-global symbols found. Check our cache to see if we have |
5739 | already performed this search before. If we have, then return | |
5740 | the same result. */ | |
5741 | ||
b5ec771e PA |
5742 | if (lookup_cached_symbol (ada_lookup_name (lookup_name), |
5743 | domain, &sym, &block)) | |
4c4b4cd2 PH |
5744 | { |
5745 | if (sym != NULL) | |
b5ec771e | 5746 | add_defn_to_vec (obstackp, sym, block); |
22cee43f | 5747 | return; |
4c4b4cd2 | 5748 | } |
14f9c5c9 | 5749 | |
22cee43f PMR |
5750 | if (made_global_lookup_p) |
5751 | *made_global_lookup_p = 1; | |
b1eedac9 | 5752 | |
339c13b6 JB |
5753 | /* Search symbols from all global blocks. */ |
5754 | ||
b5ec771e | 5755 | add_nonlocal_symbols (obstackp, lookup_name, domain, 1); |
d2e4a39e | 5756 | |
4c4b4cd2 | 5757 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 5758 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 5759 | |
22cee43f | 5760 | if (num_defns_collected (obstackp) == 0) |
b5ec771e | 5761 | add_nonlocal_symbols (obstackp, lookup_name, domain, 0); |
22cee43f PMR |
5762 | } |
5763 | ||
b5ec771e PA |
5764 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if FULL_SEARCH |
5765 | is non-zero, enclosing scope and in global scopes, returning the number of | |
22cee43f | 5766 | matches. |
54d343a2 TT |
5767 | Fills *RESULTS with (SYM,BLOCK) tuples, indicating the symbols |
5768 | found and the blocks and symbol tables (if any) in which they were | |
5769 | found. | |
22cee43f PMR |
5770 | |
5771 | When full_search is non-zero, any non-function/non-enumeral | |
5772 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
5773 | is the one match returned (no other matches in that or | |
5774 | enclosing blocks is returned). If there are any matches in or | |
5775 | surrounding BLOCK, then these alone are returned. | |
5776 | ||
5777 | Names prefixed with "standard__" are handled specially: "standard__" | |
5778 | is first stripped off, and only static and global symbols are searched. */ | |
5779 | ||
5780 | static int | |
b5ec771e PA |
5781 | ada_lookup_symbol_list_worker (const lookup_name_info &lookup_name, |
5782 | const struct block *block, | |
22cee43f | 5783 | domain_enum domain, |
54d343a2 | 5784 | std::vector<struct block_symbol> *results, |
22cee43f PMR |
5785 | int full_search) |
5786 | { | |
22cee43f PMR |
5787 | int syms_from_global_search; |
5788 | int ndefns; | |
ec6a20c2 | 5789 | auto_obstack obstack; |
22cee43f | 5790 | |
ec6a20c2 | 5791 | ada_add_all_symbols (&obstack, block, lookup_name, |
b5ec771e | 5792 | domain, full_search, &syms_from_global_search); |
14f9c5c9 | 5793 | |
ec6a20c2 JB |
5794 | ndefns = num_defns_collected (&obstack); |
5795 | ||
54d343a2 TT |
5796 | struct block_symbol *base = defns_collected (&obstack, 1); |
5797 | for (int i = 0; i < ndefns; ++i) | |
5798 | results->push_back (base[i]); | |
4c4b4cd2 | 5799 | |
54d343a2 | 5800 | ndefns = remove_extra_symbols (results); |
4c4b4cd2 | 5801 | |
b1eedac9 | 5802 | if (ndefns == 0 && full_search && syms_from_global_search) |
b5ec771e | 5803 | cache_symbol (ada_lookup_name (lookup_name), domain, NULL, NULL); |
14f9c5c9 | 5804 | |
b1eedac9 | 5805 | if (ndefns == 1 && full_search && syms_from_global_search) |
b5ec771e PA |
5806 | cache_symbol (ada_lookup_name (lookup_name), domain, |
5807 | (*results)[0].symbol, (*results)[0].block); | |
14f9c5c9 | 5808 | |
54d343a2 | 5809 | ndefns = remove_irrelevant_renamings (results, block); |
ec6a20c2 | 5810 | |
14f9c5c9 AS |
5811 | return ndefns; |
5812 | } | |
5813 | ||
b5ec771e | 5814 | /* Find symbols in DOMAIN matching NAME, in BLOCK and enclosing scope and |
54d343a2 TT |
5815 | in global scopes, returning the number of matches, and filling *RESULTS |
5816 | with (SYM,BLOCK) tuples. | |
ec6a20c2 | 5817 | |
4eeaa230 DE |
5818 | See ada_lookup_symbol_list_worker for further details. */ |
5819 | ||
5820 | int | |
b5ec771e | 5821 | ada_lookup_symbol_list (const char *name, const struct block *block, |
54d343a2 TT |
5822 | domain_enum domain, |
5823 | std::vector<struct block_symbol> *results) | |
4eeaa230 | 5824 | { |
b5ec771e PA |
5825 | symbol_name_match_type name_match_type = name_match_type_from_name (name); |
5826 | lookup_name_info lookup_name (name, name_match_type); | |
5827 | ||
5828 | return ada_lookup_symbol_list_worker (lookup_name, block, domain, results, 1); | |
4eeaa230 DE |
5829 | } |
5830 | ||
5831 | /* Implementation of the la_iterate_over_symbols method. */ | |
5832 | ||
5833 | static void | |
14bc53a8 | 5834 | ada_iterate_over_symbols |
b5ec771e PA |
5835 | (const struct block *block, const lookup_name_info &name, |
5836 | domain_enum domain, | |
14bc53a8 | 5837 | gdb::function_view<symbol_found_callback_ftype> callback) |
4eeaa230 DE |
5838 | { |
5839 | int ndefs, i; | |
54d343a2 | 5840 | std::vector<struct block_symbol> results; |
4eeaa230 DE |
5841 | |
5842 | ndefs = ada_lookup_symbol_list_worker (name, block, domain, &results, 0); | |
ec6a20c2 | 5843 | |
4eeaa230 DE |
5844 | for (i = 0; i < ndefs; ++i) |
5845 | { | |
7e41c8db | 5846 | if (!callback (&results[i])) |
4eeaa230 DE |
5847 | break; |
5848 | } | |
5849 | } | |
5850 | ||
4e5c77fe JB |
5851 | /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set |
5852 | to 1, but choosing the first symbol found if there are multiple | |
5853 | choices. | |
5854 | ||
5e2336be JB |
5855 | The result is stored in *INFO, which must be non-NULL. |
5856 | If no match is found, INFO->SYM is set to NULL. */ | |
4e5c77fe JB |
5857 | |
5858 | void | |
5859 | ada_lookup_encoded_symbol (const char *name, const struct block *block, | |
fe978cb0 | 5860 | domain_enum domain, |
d12307c1 | 5861 | struct block_symbol *info) |
14f9c5c9 | 5862 | { |
b5ec771e PA |
5863 | /* Since we already have an encoded name, wrap it in '<>' to force a |
5864 | verbatim match. Otherwise, if the name happens to not look like | |
5865 | an encoded name (because it doesn't include a "__"), | |
5866 | ada_lookup_name_info would re-encode/fold it again, and that | |
5867 | would e.g., incorrectly lowercase object renaming names like | |
5868 | "R28b" -> "r28b". */ | |
5869 | std::string verbatim = std::string ("<") + name + '>'; | |
5870 | ||
5e2336be | 5871 | gdb_assert (info != NULL); |
f98fc17b | 5872 | *info = ada_lookup_symbol (verbatim.c_str (), block, domain, NULL); |
4e5c77fe | 5873 | } |
aeb5907d JB |
5874 | |
5875 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
5876 | scope and in global scopes, or NULL if none. NAME is folded and | |
5877 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
0963b4bd | 5878 | choosing the first symbol if there are multiple choices. |
4e5c77fe JB |
5879 | If IS_A_FIELD_OF_THIS is not NULL, it is set to zero. */ |
5880 | ||
d12307c1 | 5881 | struct block_symbol |
aeb5907d | 5882 | ada_lookup_symbol (const char *name, const struct block *block0, |
fe978cb0 | 5883 | domain_enum domain, int *is_a_field_of_this) |
aeb5907d JB |
5884 | { |
5885 | if (is_a_field_of_this != NULL) | |
5886 | *is_a_field_of_this = 0; | |
5887 | ||
54d343a2 | 5888 | std::vector<struct block_symbol> candidates; |
f98fc17b | 5889 | int n_candidates; |
f98fc17b PA |
5890 | |
5891 | n_candidates = ada_lookup_symbol_list (name, block0, domain, &candidates); | |
f98fc17b PA |
5892 | |
5893 | if (n_candidates == 0) | |
54d343a2 | 5894 | return {}; |
f98fc17b PA |
5895 | |
5896 | block_symbol info = candidates[0]; | |
5897 | info.symbol = fixup_symbol_section (info.symbol, NULL); | |
d12307c1 | 5898 | return info; |
4c4b4cd2 | 5899 | } |
14f9c5c9 | 5900 | |
d12307c1 | 5901 | static struct block_symbol |
f606139a DE |
5902 | ada_lookup_symbol_nonlocal (const struct language_defn *langdef, |
5903 | const char *name, | |
76a01679 | 5904 | const struct block *block, |
21b556f4 | 5905 | const domain_enum domain) |
4c4b4cd2 | 5906 | { |
d12307c1 | 5907 | struct block_symbol sym; |
04dccad0 JB |
5908 | |
5909 | sym = ada_lookup_symbol (name, block_static_block (block), domain, NULL); | |
d12307c1 | 5910 | if (sym.symbol != NULL) |
04dccad0 JB |
5911 | return sym; |
5912 | ||
5913 | /* If we haven't found a match at this point, try the primitive | |
5914 | types. In other languages, this search is performed before | |
5915 | searching for global symbols in order to short-circuit that | |
5916 | global-symbol search if it happens that the name corresponds | |
5917 | to a primitive type. But we cannot do the same in Ada, because | |
5918 | it is perfectly legitimate for a program to declare a type which | |
5919 | has the same name as a standard type. If looking up a type in | |
5920 | that situation, we have traditionally ignored the primitive type | |
5921 | in favor of user-defined types. This is why, unlike most other | |
5922 | languages, we search the primitive types this late and only after | |
5923 | having searched the global symbols without success. */ | |
5924 | ||
5925 | if (domain == VAR_DOMAIN) | |
5926 | { | |
5927 | struct gdbarch *gdbarch; | |
5928 | ||
5929 | if (block == NULL) | |
5930 | gdbarch = target_gdbarch (); | |
5931 | else | |
5932 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
5933 | sym.symbol = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); |
5934 | if (sym.symbol != NULL) | |
04dccad0 JB |
5935 | return sym; |
5936 | } | |
5937 | ||
6640a367 | 5938 | return {}; |
14f9c5c9 AS |
5939 | } |
5940 | ||
5941 | ||
4c4b4cd2 PH |
5942 | /* True iff STR is a possible encoded suffix of a normal Ada name |
5943 | that is to be ignored for matching purposes. Suffixes of parallel | |
5944 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 5945 | are given by any of the regular expressions: |
4c4b4cd2 | 5946 | |
babe1480 JB |
5947 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
5948 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
9ac7f98e | 5949 | TKB [subprogram suffix for task bodies] |
babe1480 | 5950 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 5951 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
5952 | |
5953 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
5954 | match is performed. This sequence is used to differentiate homonyms, | |
5955 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 5956 | |
14f9c5c9 | 5957 | static int |
d2e4a39e | 5958 | is_name_suffix (const char *str) |
14f9c5c9 AS |
5959 | { |
5960 | int k; | |
4c4b4cd2 PH |
5961 | const char *matching; |
5962 | const int len = strlen (str); | |
5963 | ||
babe1480 JB |
5964 | /* Skip optional leading __[0-9]+. */ |
5965 | ||
4c4b4cd2 PH |
5966 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
5967 | { | |
babe1480 JB |
5968 | str += 3; |
5969 | while (isdigit (str[0])) | |
5970 | str += 1; | |
4c4b4cd2 | 5971 | } |
babe1480 JB |
5972 | |
5973 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 5974 | |
babe1480 | 5975 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 5976 | { |
babe1480 | 5977 | matching = str + 1; |
4c4b4cd2 PH |
5978 | while (isdigit (matching[0])) |
5979 | matching += 1; | |
5980 | if (matching[0] == '\0') | |
5981 | return 1; | |
5982 | } | |
5983 | ||
5984 | /* ___[0-9]+ */ | |
babe1480 | 5985 | |
4c4b4cd2 PH |
5986 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
5987 | { | |
5988 | matching = str + 3; | |
5989 | while (isdigit (matching[0])) | |
5990 | matching += 1; | |
5991 | if (matching[0] == '\0') | |
5992 | return 1; | |
5993 | } | |
5994 | ||
9ac7f98e JB |
5995 | /* "TKB" suffixes are used for subprograms implementing task bodies. */ |
5996 | ||
5997 | if (strcmp (str, "TKB") == 0) | |
5998 | return 1; | |
5999 | ||
529cad9c PH |
6000 | #if 0 |
6001 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
0963b4bd MS |
6002 | with a N at the end. Unfortunately, the compiler uses the same |
6003 | convention for other internal types it creates. So treating | |
529cad9c | 6004 | all entity names that end with an "N" as a name suffix causes |
0963b4bd MS |
6005 | some regressions. For instance, consider the case of an enumerated |
6006 | type. To support the 'Image attribute, it creates an array whose | |
529cad9c PH |
6007 | name ends with N. |
6008 | Having a single character like this as a suffix carrying some | |
0963b4bd | 6009 | information is a bit risky. Perhaps we should change the encoding |
529cad9c PH |
6010 | to be something like "_N" instead. In the meantime, do not do |
6011 | the following check. */ | |
6012 | /* Protected Object Subprograms */ | |
6013 | if (len == 1 && str [0] == 'N') | |
6014 | return 1; | |
6015 | #endif | |
6016 | ||
6017 | /* _E[0-9]+[bs]$ */ | |
6018 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
6019 | { | |
6020 | matching = str + 3; | |
6021 | while (isdigit (matching[0])) | |
6022 | matching += 1; | |
6023 | if ((matching[0] == 'b' || matching[0] == 's') | |
6024 | && matching [1] == '\0') | |
6025 | return 1; | |
6026 | } | |
6027 | ||
4c4b4cd2 PH |
6028 | /* ??? We should not modify STR directly, as we are doing below. This |
6029 | is fine in this case, but may become problematic later if we find | |
6030 | that this alternative did not work, and want to try matching | |
6031 | another one from the begining of STR. Since we modified it, we | |
6032 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
6033 | if (str[0] == 'X') |
6034 | { | |
6035 | str += 1; | |
d2e4a39e | 6036 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
6037 | { |
6038 | if (str[0] != 'n' && str[0] != 'b') | |
6039 | return 0; | |
6040 | str += 1; | |
6041 | } | |
14f9c5c9 | 6042 | } |
babe1480 | 6043 | |
14f9c5c9 AS |
6044 | if (str[0] == '\000') |
6045 | return 1; | |
babe1480 | 6046 | |
d2e4a39e | 6047 | if (str[0] == '_') |
14f9c5c9 AS |
6048 | { |
6049 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 6050 | return 0; |
d2e4a39e | 6051 | if (str[2] == '_') |
4c4b4cd2 | 6052 | { |
61ee279c PH |
6053 | if (strcmp (str + 3, "JM") == 0) |
6054 | return 1; | |
6055 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
6056 | the LJM suffix in favor of the JM one. But we will | |
6057 | still accept LJM as a valid suffix for a reasonable | |
6058 | amount of time, just to allow ourselves to debug programs | |
6059 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
6060 | if (strcmp (str + 3, "LJM") == 0) |
6061 | return 1; | |
6062 | if (str[3] != 'X') | |
6063 | return 0; | |
1265e4aa JB |
6064 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
6065 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
6066 | return 1; |
6067 | if (str[4] == 'R' && str[5] != 'T') | |
6068 | return 1; | |
6069 | return 0; | |
6070 | } | |
6071 | if (!isdigit (str[2])) | |
6072 | return 0; | |
6073 | for (k = 3; str[k] != '\0'; k += 1) | |
6074 | if (!isdigit (str[k]) && str[k] != '_') | |
6075 | return 0; | |
14f9c5c9 AS |
6076 | return 1; |
6077 | } | |
4c4b4cd2 | 6078 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 6079 | { |
4c4b4cd2 PH |
6080 | for (k = 2; str[k] != '\0'; k += 1) |
6081 | if (!isdigit (str[k]) && str[k] != '_') | |
6082 | return 0; | |
14f9c5c9 AS |
6083 | return 1; |
6084 | } | |
6085 | return 0; | |
6086 | } | |
d2e4a39e | 6087 | |
aeb5907d JB |
6088 | /* Return non-zero if the string starting at NAME and ending before |
6089 | NAME_END contains no capital letters. */ | |
529cad9c PH |
6090 | |
6091 | static int | |
6092 | is_valid_name_for_wild_match (const char *name0) | |
6093 | { | |
6094 | const char *decoded_name = ada_decode (name0); | |
6095 | int i; | |
6096 | ||
5823c3ef JB |
6097 | /* If the decoded name starts with an angle bracket, it means that |
6098 | NAME0 does not follow the GNAT encoding format. It should then | |
6099 | not be allowed as a possible wild match. */ | |
6100 | if (decoded_name[0] == '<') | |
6101 | return 0; | |
6102 | ||
529cad9c PH |
6103 | for (i=0; decoded_name[i] != '\0'; i++) |
6104 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
6105 | return 0; | |
6106 | ||
6107 | return 1; | |
6108 | } | |
6109 | ||
73589123 PH |
6110 | /* Advance *NAMEP to next occurrence of TARGET0 in the string NAME0 |
6111 | that could start a simple name. Assumes that *NAMEP points into | |
6112 | the string beginning at NAME0. */ | |
4c4b4cd2 | 6113 | |
14f9c5c9 | 6114 | static int |
73589123 | 6115 | advance_wild_match (const char **namep, const char *name0, int target0) |
14f9c5c9 | 6116 | { |
73589123 | 6117 | const char *name = *namep; |
5b4ee69b | 6118 | |
5823c3ef | 6119 | while (1) |
14f9c5c9 | 6120 | { |
aa27d0b3 | 6121 | int t0, t1; |
73589123 PH |
6122 | |
6123 | t0 = *name; | |
6124 | if (t0 == '_') | |
6125 | { | |
6126 | t1 = name[1]; | |
6127 | if ((t1 >= 'a' && t1 <= 'z') || (t1 >= '0' && t1 <= '9')) | |
6128 | { | |
6129 | name += 1; | |
61012eef | 6130 | if (name == name0 + 5 && startswith (name0, "_ada")) |
73589123 PH |
6131 | break; |
6132 | else | |
6133 | name += 1; | |
6134 | } | |
aa27d0b3 JB |
6135 | else if (t1 == '_' && ((name[2] >= 'a' && name[2] <= 'z') |
6136 | || name[2] == target0)) | |
73589123 PH |
6137 | { |
6138 | name += 2; | |
6139 | break; | |
6140 | } | |
6141 | else | |
6142 | return 0; | |
6143 | } | |
6144 | else if ((t0 >= 'a' && t0 <= 'z') || (t0 >= '0' && t0 <= '9')) | |
6145 | name += 1; | |
6146 | else | |
5823c3ef | 6147 | return 0; |
73589123 PH |
6148 | } |
6149 | ||
6150 | *namep = name; | |
6151 | return 1; | |
6152 | } | |
6153 | ||
b5ec771e PA |
6154 | /* Return true iff NAME encodes a name of the form prefix.PATN. |
6155 | Ignores any informational suffixes of NAME (i.e., for which | |
6156 | is_name_suffix is true). Assumes that PATN is a lower-cased Ada | |
6157 | simple name. */ | |
73589123 | 6158 | |
b5ec771e | 6159 | static bool |
73589123 PH |
6160 | wild_match (const char *name, const char *patn) |
6161 | { | |
22e048c9 | 6162 | const char *p; |
73589123 PH |
6163 | const char *name0 = name; |
6164 | ||
6165 | while (1) | |
6166 | { | |
6167 | const char *match = name; | |
6168 | ||
6169 | if (*name == *patn) | |
6170 | { | |
6171 | for (name += 1, p = patn + 1; *p != '\0'; name += 1, p += 1) | |
6172 | if (*p != *name) | |
6173 | break; | |
6174 | if (*p == '\0' && is_name_suffix (name)) | |
b5ec771e | 6175 | return match == name0 || is_valid_name_for_wild_match (name0); |
73589123 PH |
6176 | |
6177 | if (name[-1] == '_') | |
6178 | name -= 1; | |
6179 | } | |
6180 | if (!advance_wild_match (&name, name0, *patn)) | |
b5ec771e | 6181 | return false; |
96d887e8 | 6182 | } |
96d887e8 PH |
6183 | } |
6184 | ||
b5ec771e PA |
6185 | /* Returns true iff symbol name SYM_NAME matches SEARCH_NAME, ignoring |
6186 | any trailing suffixes that encode debugging information or leading | |
6187 | _ada_ on SYM_NAME (see is_name_suffix commentary for the debugging | |
6188 | information that is ignored). */ | |
40658b94 | 6189 | |
b5ec771e | 6190 | static bool |
c4d840bd PH |
6191 | full_match (const char *sym_name, const char *search_name) |
6192 | { | |
b5ec771e PA |
6193 | size_t search_name_len = strlen (search_name); |
6194 | ||
6195 | if (strncmp (sym_name, search_name, search_name_len) == 0 | |
6196 | && is_name_suffix (sym_name + search_name_len)) | |
6197 | return true; | |
6198 | ||
6199 | if (startswith (sym_name, "_ada_") | |
6200 | && strncmp (sym_name + 5, search_name, search_name_len) == 0 | |
6201 | && is_name_suffix (sym_name + search_name_len + 5)) | |
6202 | return true; | |
c4d840bd | 6203 | |
b5ec771e PA |
6204 | return false; |
6205 | } | |
c4d840bd | 6206 | |
b5ec771e PA |
6207 | /* Add symbols from BLOCK matching LOOKUP_NAME in DOMAIN to vector |
6208 | *defn_symbols, updating the list of symbols in OBSTACKP (if | |
6209 | necessary). OBJFILE is the section containing BLOCK. */ | |
96d887e8 PH |
6210 | |
6211 | static void | |
6212 | ada_add_block_symbols (struct obstack *obstackp, | |
b5ec771e PA |
6213 | const struct block *block, |
6214 | const lookup_name_info &lookup_name, | |
6215 | domain_enum domain, struct objfile *objfile) | |
96d887e8 | 6216 | { |
8157b174 | 6217 | struct block_iterator iter; |
96d887e8 PH |
6218 | /* A matching argument symbol, if any. */ |
6219 | struct symbol *arg_sym; | |
6220 | /* Set true when we find a matching non-argument symbol. */ | |
6221 | int found_sym; | |
6222 | struct symbol *sym; | |
6223 | ||
6224 | arg_sym = NULL; | |
6225 | found_sym = 0; | |
b5ec771e PA |
6226 | for (sym = block_iter_match_first (block, lookup_name, &iter); |
6227 | sym != NULL; | |
6228 | sym = block_iter_match_next (lookup_name, &iter)) | |
96d887e8 | 6229 | { |
b5ec771e PA |
6230 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
6231 | SYMBOL_DOMAIN (sym), domain)) | |
6232 | { | |
6233 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) | |
6234 | { | |
6235 | if (SYMBOL_IS_ARGUMENT (sym)) | |
6236 | arg_sym = sym; | |
6237 | else | |
6238 | { | |
6239 | found_sym = 1; | |
6240 | add_defn_to_vec (obstackp, | |
6241 | fixup_symbol_section (sym, objfile), | |
6242 | block); | |
6243 | } | |
6244 | } | |
6245 | } | |
96d887e8 PH |
6246 | } |
6247 | ||
22cee43f PMR |
6248 | /* Handle renamings. */ |
6249 | ||
b5ec771e | 6250 | if (ada_add_block_renamings (obstackp, block, lookup_name, domain)) |
22cee43f PMR |
6251 | found_sym = 1; |
6252 | ||
96d887e8 PH |
6253 | if (!found_sym && arg_sym != NULL) |
6254 | { | |
76a01679 JB |
6255 | add_defn_to_vec (obstackp, |
6256 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 6257 | block); |
96d887e8 PH |
6258 | } |
6259 | ||
b5ec771e | 6260 | if (!lookup_name.ada ().wild_match_p ()) |
96d887e8 PH |
6261 | { |
6262 | arg_sym = NULL; | |
6263 | found_sym = 0; | |
b5ec771e PA |
6264 | const std::string &ada_lookup_name = lookup_name.ada ().lookup_name (); |
6265 | const char *name = ada_lookup_name.c_str (); | |
6266 | size_t name_len = ada_lookup_name.size (); | |
96d887e8 PH |
6267 | |
6268 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 6269 | { |
4186eb54 KS |
6270 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
6271 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
6272 | { |
6273 | int cmp; | |
6274 | ||
6275 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
6276 | if (cmp == 0) | |
6277 | { | |
61012eef | 6278 | cmp = !startswith (SYMBOL_LINKAGE_NAME (sym), "_ada_"); |
76a01679 JB |
6279 | if (cmp == 0) |
6280 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
6281 | name_len); | |
6282 | } | |
6283 | ||
6284 | if (cmp == 0 | |
6285 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
6286 | { | |
2a2d4dc3 AS |
6287 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
6288 | { | |
6289 | if (SYMBOL_IS_ARGUMENT (sym)) | |
6290 | arg_sym = sym; | |
6291 | else | |
6292 | { | |
6293 | found_sym = 1; | |
6294 | add_defn_to_vec (obstackp, | |
6295 | fixup_symbol_section (sym, objfile), | |
6296 | block); | |
6297 | } | |
6298 | } | |
76a01679 JB |
6299 | } |
6300 | } | |
76a01679 | 6301 | } |
96d887e8 PH |
6302 | |
6303 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
6304 | They aren't parameters, right? */ | |
6305 | if (!found_sym && arg_sym != NULL) | |
6306 | { | |
6307 | add_defn_to_vec (obstackp, | |
76a01679 | 6308 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 6309 | block); |
96d887e8 PH |
6310 | } |
6311 | } | |
6312 | } | |
6313 | \f | |
41d27058 JB |
6314 | |
6315 | /* Symbol Completion */ | |
6316 | ||
b5ec771e | 6317 | /* See symtab.h. */ |
41d27058 | 6318 | |
b5ec771e PA |
6319 | bool |
6320 | ada_lookup_name_info::matches | |
6321 | (const char *sym_name, | |
6322 | symbol_name_match_type match_type, | |
a207cff2 | 6323 | completion_match_result *comp_match_res) const |
41d27058 | 6324 | { |
b5ec771e PA |
6325 | bool match = false; |
6326 | const char *text = m_encoded_name.c_str (); | |
6327 | size_t text_len = m_encoded_name.size (); | |
41d27058 JB |
6328 | |
6329 | /* First, test against the fully qualified name of the symbol. */ | |
6330 | ||
6331 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6332 | match = true; |
41d27058 | 6333 | |
b5ec771e | 6334 | if (match && !m_encoded_p) |
41d27058 JB |
6335 | { |
6336 | /* One needed check before declaring a positive match is to verify | |
6337 | that iff we are doing a verbatim match, the decoded version | |
6338 | of the symbol name starts with '<'. Otherwise, this symbol name | |
6339 | is not a suitable completion. */ | |
6340 | const char *sym_name_copy = sym_name; | |
b5ec771e | 6341 | bool has_angle_bracket; |
41d27058 JB |
6342 | |
6343 | sym_name = ada_decode (sym_name); | |
6344 | has_angle_bracket = (sym_name[0] == '<'); | |
b5ec771e | 6345 | match = (has_angle_bracket == m_verbatim_p); |
41d27058 JB |
6346 | sym_name = sym_name_copy; |
6347 | } | |
6348 | ||
b5ec771e | 6349 | if (match && !m_verbatim_p) |
41d27058 JB |
6350 | { |
6351 | /* When doing non-verbatim match, another check that needs to | |
6352 | be done is to verify that the potentially matching symbol name | |
6353 | does not include capital letters, because the ada-mode would | |
6354 | not be able to understand these symbol names without the | |
6355 | angle bracket notation. */ | |
6356 | const char *tmp; | |
6357 | ||
6358 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
6359 | if (*tmp != '\0') | |
b5ec771e | 6360 | match = false; |
41d27058 JB |
6361 | } |
6362 | ||
6363 | /* Second: Try wild matching... */ | |
6364 | ||
b5ec771e | 6365 | if (!match && m_wild_match_p) |
41d27058 JB |
6366 | { |
6367 | /* Since we are doing wild matching, this means that TEXT | |
6368 | may represent an unqualified symbol name. We therefore must | |
6369 | also compare TEXT against the unqualified name of the symbol. */ | |
6370 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
6371 | ||
6372 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6373 | match = true; |
41d27058 JB |
6374 | } |
6375 | ||
b5ec771e | 6376 | /* Finally: If we found a match, prepare the result to return. */ |
41d27058 JB |
6377 | |
6378 | if (!match) | |
b5ec771e | 6379 | return false; |
41d27058 | 6380 | |
a207cff2 | 6381 | if (comp_match_res != NULL) |
b5ec771e | 6382 | { |
a207cff2 | 6383 | std::string &match_str = comp_match_res->match.storage (); |
41d27058 | 6384 | |
b5ec771e | 6385 | if (!m_encoded_p) |
a207cff2 | 6386 | match_str = ada_decode (sym_name); |
b5ec771e PA |
6387 | else |
6388 | { | |
6389 | if (m_verbatim_p) | |
6390 | match_str = add_angle_brackets (sym_name); | |
6391 | else | |
6392 | match_str = sym_name; | |
41d27058 | 6393 | |
b5ec771e | 6394 | } |
a207cff2 PA |
6395 | |
6396 | comp_match_res->set_match (match_str.c_str ()); | |
41d27058 JB |
6397 | } |
6398 | ||
b5ec771e | 6399 | return true; |
41d27058 JB |
6400 | } |
6401 | ||
b5ec771e | 6402 | /* Add the list of possible symbol names completing TEXT to TRACKER. |
eb3ff9a5 | 6403 | WORD is the entire command on which completion is made. */ |
41d27058 | 6404 | |
eb3ff9a5 PA |
6405 | static void |
6406 | ada_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 6407 | complete_symbol_mode mode, |
b5ec771e PA |
6408 | symbol_name_match_type name_match_type, |
6409 | const char *text, const char *word, | |
eb3ff9a5 | 6410 | enum type_code code) |
41d27058 | 6411 | { |
41d27058 | 6412 | struct symbol *sym; |
3977b71f | 6413 | const struct block *b, *surrounding_static_block = 0; |
8157b174 | 6414 | struct block_iterator iter; |
41d27058 | 6415 | |
2f68a895 TT |
6416 | gdb_assert (code == TYPE_CODE_UNDEF); |
6417 | ||
1b026119 | 6418 | lookup_name_info lookup_name (text, name_match_type, true); |
41d27058 JB |
6419 | |
6420 | /* First, look at the partial symtab symbols. */ | |
14bc53a8 | 6421 | expand_symtabs_matching (NULL, |
b5ec771e PA |
6422 | lookup_name, |
6423 | NULL, | |
14bc53a8 PA |
6424 | NULL, |
6425 | ALL_DOMAIN); | |
41d27058 JB |
6426 | |
6427 | /* At this point scan through the misc symbol vectors and add each | |
6428 | symbol you find to the list. Eventually we want to ignore | |
6429 | anything that isn't a text symbol (everything else will be | |
6430 | handled by the psymtab code above). */ | |
6431 | ||
2030c079 | 6432 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 6433 | { |
7932255d | 6434 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
6435 | { |
6436 | QUIT; | |
6437 | ||
6438 | if (completion_skip_symbol (mode, msymbol)) | |
6439 | continue; | |
6440 | ||
6441 | language symbol_language = MSYMBOL_LANGUAGE (msymbol); | |
6442 | ||
6443 | /* Ada minimal symbols won't have their language set to Ada. If | |
6444 | we let completion_list_add_name compare using the | |
6445 | default/C-like matcher, then when completing e.g., symbols in a | |
6446 | package named "pck", we'd match internal Ada symbols like | |
6447 | "pckS", which are invalid in an Ada expression, unless you wrap | |
6448 | them in '<' '>' to request a verbatim match. | |
6449 | ||
6450 | Unfortunately, some Ada encoded names successfully demangle as | |
6451 | C++ symbols (using an old mangling scheme), such as "name__2Xn" | |
6452 | -> "Xn::name(void)" and thus some Ada minimal symbols end up | |
6453 | with the wrong language set. Paper over that issue here. */ | |
6454 | if (symbol_language == language_auto | |
6455 | || symbol_language == language_cplus) | |
6456 | symbol_language = language_ada; | |
6457 | ||
6458 | completion_list_add_name (tracker, | |
6459 | symbol_language, | |
6460 | MSYMBOL_LINKAGE_NAME (msymbol), | |
6461 | lookup_name, text, word); | |
6462 | } | |
6463 | } | |
41d27058 JB |
6464 | |
6465 | /* Search upwards from currently selected frame (so that we can | |
6466 | complete on local vars. */ | |
6467 | ||
6468 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
6469 | { | |
6470 | if (!BLOCK_SUPERBLOCK (b)) | |
6471 | surrounding_static_block = b; /* For elmin of dups */ | |
6472 | ||
6473 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
6474 | { | |
f9d67a22 PA |
6475 | if (completion_skip_symbol (mode, sym)) |
6476 | continue; | |
6477 | ||
b5ec771e PA |
6478 | completion_list_add_name (tracker, |
6479 | SYMBOL_LANGUAGE (sym), | |
6480 | SYMBOL_LINKAGE_NAME (sym), | |
1b026119 | 6481 | lookup_name, text, word); |
41d27058 JB |
6482 | } |
6483 | } | |
6484 | ||
6485 | /* Go through the symtabs and check the externs and statics for | |
43f3e411 | 6486 | symbols which match. */ |
41d27058 | 6487 | |
2030c079 | 6488 | for (objfile *objfile : current_program_space->objfiles ()) |
41d27058 | 6489 | { |
b669c953 | 6490 | for (compunit_symtab *s : objfile->compunits ()) |
d8aeb77f TT |
6491 | { |
6492 | QUIT; | |
6493 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), GLOBAL_BLOCK); | |
6494 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
6495 | { | |
6496 | if (completion_skip_symbol (mode, sym)) | |
6497 | continue; | |
f9d67a22 | 6498 | |
d8aeb77f TT |
6499 | completion_list_add_name (tracker, |
6500 | SYMBOL_LANGUAGE (sym), | |
6501 | SYMBOL_LINKAGE_NAME (sym), | |
6502 | lookup_name, text, word); | |
6503 | } | |
6504 | } | |
41d27058 | 6505 | } |
41d27058 | 6506 | |
2030c079 | 6507 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 6508 | { |
b669c953 | 6509 | for (compunit_symtab *s : objfile->compunits ()) |
d8aeb77f TT |
6510 | { |
6511 | QUIT; | |
6512 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), STATIC_BLOCK); | |
6513 | /* Don't do this block twice. */ | |
6514 | if (b == surrounding_static_block) | |
6515 | continue; | |
6516 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
6517 | { | |
6518 | if (completion_skip_symbol (mode, sym)) | |
6519 | continue; | |
f9d67a22 | 6520 | |
d8aeb77f TT |
6521 | completion_list_add_name (tracker, |
6522 | SYMBOL_LANGUAGE (sym), | |
6523 | SYMBOL_LINKAGE_NAME (sym), | |
6524 | lookup_name, text, word); | |
6525 | } | |
6526 | } | |
41d27058 | 6527 | } |
41d27058 JB |
6528 | } |
6529 | ||
963a6417 | 6530 | /* Field Access */ |
96d887e8 | 6531 | |
73fb9985 JB |
6532 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
6533 | for tagged types. */ | |
6534 | ||
6535 | static int | |
6536 | ada_is_dispatch_table_ptr_type (struct type *type) | |
6537 | { | |
0d5cff50 | 6538 | const char *name; |
73fb9985 JB |
6539 | |
6540 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
6541 | return 0; | |
6542 | ||
6543 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
6544 | if (name == NULL) | |
6545 | return 0; | |
6546 | ||
6547 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
6548 | } | |
6549 | ||
ac4a2da4 JG |
6550 | /* Return non-zero if TYPE is an interface tag. */ |
6551 | ||
6552 | static int | |
6553 | ada_is_interface_tag (struct type *type) | |
6554 | { | |
6555 | const char *name = TYPE_NAME (type); | |
6556 | ||
6557 | if (name == NULL) | |
6558 | return 0; | |
6559 | ||
6560 | return (strcmp (name, "ada__tags__interface_tag") == 0); | |
6561 | } | |
6562 | ||
963a6417 PH |
6563 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
6564 | to be invisible to users. */ | |
96d887e8 | 6565 | |
963a6417 PH |
6566 | int |
6567 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 6568 | { |
963a6417 PH |
6569 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
6570 | return 1; | |
ffde82bf | 6571 | |
73fb9985 JB |
6572 | /* Check the name of that field. */ |
6573 | { | |
6574 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
6575 | ||
6576 | /* Anonymous field names should not be printed. | |
6577 | brobecker/2007-02-20: I don't think this can actually happen | |
6578 | but we don't want to print the value of annonymous fields anyway. */ | |
6579 | if (name == NULL) | |
6580 | return 1; | |
6581 | ||
ffde82bf JB |
6582 | /* Normally, fields whose name start with an underscore ("_") |
6583 | are fields that have been internally generated by the compiler, | |
6584 | and thus should not be printed. The "_parent" field is special, | |
6585 | however: This is a field internally generated by the compiler | |
6586 | for tagged types, and it contains the components inherited from | |
6587 | the parent type. This field should not be printed as is, but | |
6588 | should not be ignored either. */ | |
61012eef | 6589 | if (name[0] == '_' && !startswith (name, "_parent")) |
73fb9985 JB |
6590 | return 1; |
6591 | } | |
6592 | ||
ac4a2da4 JG |
6593 | /* If this is the dispatch table of a tagged type or an interface tag, |
6594 | then ignore. */ | |
73fb9985 | 6595 | if (ada_is_tagged_type (type, 1) |
ac4a2da4 JG |
6596 | && (ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num)) |
6597 | || ada_is_interface_tag (TYPE_FIELD_TYPE (type, field_num)))) | |
73fb9985 JB |
6598 | return 1; |
6599 | ||
6600 | /* Not a special field, so it should not be ignored. */ | |
6601 | return 0; | |
963a6417 | 6602 | } |
96d887e8 | 6603 | |
963a6417 | 6604 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
0963b4bd | 6605 | pointer or reference type whose ultimate target has a tag field. */ |
96d887e8 | 6606 | |
963a6417 PH |
6607 | int |
6608 | ada_is_tagged_type (struct type *type, int refok) | |
6609 | { | |
988f6b3d | 6610 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1) != NULL); |
963a6417 | 6611 | } |
96d887e8 | 6612 | |
963a6417 | 6613 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 6614 | |
963a6417 PH |
6615 | int |
6616 | ada_is_tag_type (struct type *type) | |
6617 | { | |
460efde1 JB |
6618 | type = ada_check_typedef (type); |
6619 | ||
963a6417 PH |
6620 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) |
6621 | return 0; | |
6622 | else | |
96d887e8 | 6623 | { |
963a6417 | 6624 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5b4ee69b | 6625 | |
963a6417 PH |
6626 | return (name != NULL |
6627 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 6628 | } |
96d887e8 PH |
6629 | } |
6630 | ||
963a6417 | 6631 | /* The type of the tag on VAL. */ |
76a01679 | 6632 | |
963a6417 PH |
6633 | struct type * |
6634 | ada_tag_type (struct value *val) | |
96d887e8 | 6635 | { |
988f6b3d | 6636 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0); |
963a6417 | 6637 | } |
96d887e8 | 6638 | |
b50d69b5 JG |
6639 | /* Return 1 if TAG follows the old scheme for Ada tags (used for Ada 95, |
6640 | retired at Ada 05). */ | |
6641 | ||
6642 | static int | |
6643 | is_ada95_tag (struct value *tag) | |
6644 | { | |
6645 | return ada_value_struct_elt (tag, "tsd", 1) != NULL; | |
6646 | } | |
6647 | ||
963a6417 | 6648 | /* The value of the tag on VAL. */ |
96d887e8 | 6649 | |
963a6417 PH |
6650 | struct value * |
6651 | ada_value_tag (struct value *val) | |
6652 | { | |
03ee6b2e | 6653 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
6654 | } |
6655 | ||
963a6417 PH |
6656 | /* The value of the tag on the object of type TYPE whose contents are |
6657 | saved at VALADDR, if it is non-null, or is at memory address | |
0963b4bd | 6658 | ADDRESS. */ |
96d887e8 | 6659 | |
963a6417 | 6660 | static struct value * |
10a2c479 | 6661 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 6662 | const gdb_byte *valaddr, |
963a6417 | 6663 | CORE_ADDR address) |
96d887e8 | 6664 | { |
b5385fc0 | 6665 | int tag_byte_offset; |
963a6417 | 6666 | struct type *tag_type; |
5b4ee69b | 6667 | |
963a6417 | 6668 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, |
52ce6436 | 6669 | NULL, NULL, NULL)) |
96d887e8 | 6670 | { |
fc1a4b47 | 6671 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
6672 | ? NULL |
6673 | : valaddr + tag_byte_offset); | |
963a6417 | 6674 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 6675 | |
963a6417 | 6676 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 6677 | } |
963a6417 PH |
6678 | return NULL; |
6679 | } | |
96d887e8 | 6680 | |
963a6417 PH |
6681 | static struct type * |
6682 | type_from_tag (struct value *tag) | |
6683 | { | |
6684 | const char *type_name = ada_tag_name (tag); | |
5b4ee69b | 6685 | |
963a6417 PH |
6686 | if (type_name != NULL) |
6687 | return ada_find_any_type (ada_encode (type_name)); | |
6688 | return NULL; | |
6689 | } | |
96d887e8 | 6690 | |
b50d69b5 JG |
6691 | /* Given a value OBJ of a tagged type, return a value of this |
6692 | type at the base address of the object. The base address, as | |
6693 | defined in Ada.Tags, it is the address of the primary tag of | |
6694 | the object, and therefore where the field values of its full | |
6695 | view can be fetched. */ | |
6696 | ||
6697 | struct value * | |
6698 | ada_tag_value_at_base_address (struct value *obj) | |
6699 | { | |
b50d69b5 JG |
6700 | struct value *val; |
6701 | LONGEST offset_to_top = 0; | |
6702 | struct type *ptr_type, *obj_type; | |
6703 | struct value *tag; | |
6704 | CORE_ADDR base_address; | |
6705 | ||
6706 | obj_type = value_type (obj); | |
6707 | ||
6708 | /* It is the responsability of the caller to deref pointers. */ | |
6709 | ||
6710 | if (TYPE_CODE (obj_type) == TYPE_CODE_PTR | |
6711 | || TYPE_CODE (obj_type) == TYPE_CODE_REF) | |
6712 | return obj; | |
6713 | ||
6714 | tag = ada_value_tag (obj); | |
6715 | if (!tag) | |
6716 | return obj; | |
6717 | ||
6718 | /* Base addresses only appeared with Ada 05 and multiple inheritance. */ | |
6719 | ||
6720 | if (is_ada95_tag (tag)) | |
6721 | return obj; | |
6722 | ||
08f49010 XR |
6723 | ptr_type = language_lookup_primitive_type |
6724 | (language_def (language_ada), target_gdbarch(), "storage_offset"); | |
b50d69b5 JG |
6725 | ptr_type = lookup_pointer_type (ptr_type); |
6726 | val = value_cast (ptr_type, tag); | |
6727 | if (!val) | |
6728 | return obj; | |
6729 | ||
6730 | /* It is perfectly possible that an exception be raised while | |
6731 | trying to determine the base address, just like for the tag; | |
6732 | see ada_tag_name for more details. We do not print the error | |
6733 | message for the same reason. */ | |
6734 | ||
a70b8144 | 6735 | try |
b50d69b5 JG |
6736 | { |
6737 | offset_to_top = value_as_long (value_ind (value_ptradd (val, -2))); | |
6738 | } | |
6739 | ||
230d2906 | 6740 | catch (const gdb_exception_error &e) |
492d29ea PA |
6741 | { |
6742 | return obj; | |
6743 | } | |
b50d69b5 JG |
6744 | |
6745 | /* If offset is null, nothing to do. */ | |
6746 | ||
6747 | if (offset_to_top == 0) | |
6748 | return obj; | |
6749 | ||
6750 | /* -1 is a special case in Ada.Tags; however, what should be done | |
6751 | is not quite clear from the documentation. So do nothing for | |
6752 | now. */ | |
6753 | ||
6754 | if (offset_to_top == -1) | |
6755 | return obj; | |
6756 | ||
08f49010 XR |
6757 | /* OFFSET_TO_TOP used to be a positive value to be subtracted |
6758 | from the base address. This was however incompatible with | |
6759 | C++ dispatch table: C++ uses a *negative* value to *add* | |
6760 | to the base address. Ada's convention has therefore been | |
6761 | changed in GNAT 19.0w 20171023: since then, C++ and Ada | |
6762 | use the same convention. Here, we support both cases by | |
6763 | checking the sign of OFFSET_TO_TOP. */ | |
6764 | ||
6765 | if (offset_to_top > 0) | |
6766 | offset_to_top = -offset_to_top; | |
6767 | ||
6768 | base_address = value_address (obj) + offset_to_top; | |
b50d69b5 JG |
6769 | tag = value_tag_from_contents_and_address (obj_type, NULL, base_address); |
6770 | ||
6771 | /* Make sure that we have a proper tag at the new address. | |
6772 | Otherwise, offset_to_top is bogus (which can happen when | |
6773 | the object is not initialized yet). */ | |
6774 | ||
6775 | if (!tag) | |
6776 | return obj; | |
6777 | ||
6778 | obj_type = type_from_tag (tag); | |
6779 | ||
6780 | if (!obj_type) | |
6781 | return obj; | |
6782 | ||
6783 | return value_from_contents_and_address (obj_type, NULL, base_address); | |
6784 | } | |
6785 | ||
1b611343 JB |
6786 | /* Return the "ada__tags__type_specific_data" type. */ |
6787 | ||
6788 | static struct type * | |
6789 | ada_get_tsd_type (struct inferior *inf) | |
963a6417 | 6790 | { |
1b611343 | 6791 | struct ada_inferior_data *data = get_ada_inferior_data (inf); |
4c4b4cd2 | 6792 | |
1b611343 JB |
6793 | if (data->tsd_type == 0) |
6794 | data->tsd_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
6795 | return data->tsd_type; | |
6796 | } | |
529cad9c | 6797 | |
1b611343 JB |
6798 | /* Return the TSD (type-specific data) associated to the given TAG. |
6799 | TAG is assumed to be the tag of a tagged-type entity. | |
529cad9c | 6800 | |
1b611343 | 6801 | May return NULL if we are unable to get the TSD. */ |
4c4b4cd2 | 6802 | |
1b611343 JB |
6803 | static struct value * |
6804 | ada_get_tsd_from_tag (struct value *tag) | |
4c4b4cd2 | 6805 | { |
4c4b4cd2 | 6806 | struct value *val; |
1b611343 | 6807 | struct type *type; |
5b4ee69b | 6808 | |
1b611343 JB |
6809 | /* First option: The TSD is simply stored as a field of our TAG. |
6810 | Only older versions of GNAT would use this format, but we have | |
6811 | to test it first, because there are no visible markers for | |
6812 | the current approach except the absence of that field. */ | |
529cad9c | 6813 | |
1b611343 JB |
6814 | val = ada_value_struct_elt (tag, "tsd", 1); |
6815 | if (val) | |
6816 | return val; | |
e802dbe0 | 6817 | |
1b611343 JB |
6818 | /* Try the second representation for the dispatch table (in which |
6819 | there is no explicit 'tsd' field in the referent of the tag pointer, | |
6820 | and instead the tsd pointer is stored just before the dispatch | |
6821 | table. */ | |
e802dbe0 | 6822 | |
1b611343 JB |
6823 | type = ada_get_tsd_type (current_inferior()); |
6824 | if (type == NULL) | |
6825 | return NULL; | |
6826 | type = lookup_pointer_type (lookup_pointer_type (type)); | |
6827 | val = value_cast (type, tag); | |
6828 | if (val == NULL) | |
6829 | return NULL; | |
6830 | return value_ind (value_ptradd (val, -1)); | |
e802dbe0 JB |
6831 | } |
6832 | ||
1b611343 JB |
6833 | /* Given the TSD of a tag (type-specific data), return a string |
6834 | containing the name of the associated type. | |
6835 | ||
6836 | The returned value is good until the next call. May return NULL | |
6837 | if we are unable to determine the tag name. */ | |
6838 | ||
6839 | static char * | |
6840 | ada_tag_name_from_tsd (struct value *tsd) | |
529cad9c | 6841 | { |
529cad9c PH |
6842 | static char name[1024]; |
6843 | char *p; | |
1b611343 | 6844 | struct value *val; |
529cad9c | 6845 | |
1b611343 | 6846 | val = ada_value_struct_elt (tsd, "expanded_name", 1); |
4c4b4cd2 | 6847 | if (val == NULL) |
1b611343 | 6848 | return NULL; |
4c4b4cd2 PH |
6849 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); |
6850 | for (p = name; *p != '\0'; p += 1) | |
6851 | if (isalpha (*p)) | |
6852 | *p = tolower (*p); | |
1b611343 | 6853 | return name; |
4c4b4cd2 PH |
6854 | } |
6855 | ||
6856 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
1b611343 JB |
6857 | a C string. |
6858 | ||
6859 | Return NULL if the TAG is not an Ada tag, or if we were unable to | |
6860 | determine the name of that tag. The result is good until the next | |
6861 | call. */ | |
4c4b4cd2 PH |
6862 | |
6863 | const char * | |
6864 | ada_tag_name (struct value *tag) | |
6865 | { | |
1b611343 | 6866 | char *name = NULL; |
5b4ee69b | 6867 | |
df407dfe | 6868 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 6869 | return NULL; |
1b611343 JB |
6870 | |
6871 | /* It is perfectly possible that an exception be raised while trying | |
6872 | to determine the TAG's name, even under normal circumstances: | |
6873 | The associated variable may be uninitialized or corrupted, for | |
6874 | instance. We do not let any exception propagate past this point. | |
6875 | instead we return NULL. | |
6876 | ||
6877 | We also do not print the error message either (which often is very | |
6878 | low-level (Eg: "Cannot read memory at 0x[...]"), but instead let | |
6879 | the caller print a more meaningful message if necessary. */ | |
a70b8144 | 6880 | try |
1b611343 JB |
6881 | { |
6882 | struct value *tsd = ada_get_tsd_from_tag (tag); | |
6883 | ||
6884 | if (tsd != NULL) | |
6885 | name = ada_tag_name_from_tsd (tsd); | |
6886 | } | |
230d2906 | 6887 | catch (const gdb_exception_error &e) |
492d29ea PA |
6888 | { |
6889 | } | |
1b611343 JB |
6890 | |
6891 | return name; | |
4c4b4cd2 PH |
6892 | } |
6893 | ||
6894 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 6895 | |
d2e4a39e | 6896 | struct type * |
ebf56fd3 | 6897 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
6898 | { |
6899 | int i; | |
6900 | ||
61ee279c | 6901 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6902 | |
6903 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
6904 | return NULL; | |
6905 | ||
6906 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6907 | if (ada_is_parent_field (type, i)) | |
0c1f74cf JB |
6908 | { |
6909 | struct type *parent_type = TYPE_FIELD_TYPE (type, i); | |
6910 | ||
6911 | /* If the _parent field is a pointer, then dereference it. */ | |
6912 | if (TYPE_CODE (parent_type) == TYPE_CODE_PTR) | |
6913 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
6914 | /* If there is a parallel XVS type, get the actual base type. */ | |
6915 | parent_type = ada_get_base_type (parent_type); | |
6916 | ||
6917 | return ada_check_typedef (parent_type); | |
6918 | } | |
14f9c5c9 AS |
6919 | |
6920 | return NULL; | |
6921 | } | |
6922 | ||
4c4b4cd2 PH |
6923 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
6924 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
6925 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6926 | |
6927 | int | |
ebf56fd3 | 6928 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 6929 | { |
61ee279c | 6930 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
5b4ee69b | 6931 | |
4c4b4cd2 | 6932 | return (name != NULL |
61012eef GB |
6933 | && (startswith (name, "PARENT") |
6934 | || startswith (name, "_parent"))); | |
14f9c5c9 AS |
6935 | } |
6936 | ||
4c4b4cd2 | 6937 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 6938 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 6939 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 6940 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 6941 | structures. */ |
14f9c5c9 AS |
6942 | |
6943 | int | |
ebf56fd3 | 6944 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 6945 | { |
d2e4a39e | 6946 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 6947 | |
dddc0e16 JB |
6948 | if (name != NULL && strcmp (name, "RETVAL") == 0) |
6949 | { | |
6950 | /* This happens in functions with "out" or "in out" parameters | |
6951 | which are passed by copy. For such functions, GNAT describes | |
6952 | the function's return type as being a struct where the return | |
6953 | value is in a field called RETVAL, and where the other "out" | |
6954 | or "in out" parameters are fields of that struct. This is not | |
6955 | a wrapper. */ | |
6956 | return 0; | |
6957 | } | |
6958 | ||
d2e4a39e | 6959 | return (name != NULL |
61012eef | 6960 | && (startswith (name, "PARENT") |
4c4b4cd2 | 6961 | || strcmp (name, "REP") == 0 |
61012eef | 6962 | || startswith (name, "_parent") |
4c4b4cd2 | 6963 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); |
14f9c5c9 AS |
6964 | } |
6965 | ||
4c4b4cd2 PH |
6966 | /* True iff field number FIELD_NUM of structure or union type TYPE |
6967 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
6968 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6969 | |
6970 | int | |
ebf56fd3 | 6971 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 6972 | { |
8ecb59f8 TT |
6973 | /* Only Ada types are eligible. */ |
6974 | if (!ADA_TYPE_P (type)) | |
6975 | return 0; | |
6976 | ||
d2e4a39e | 6977 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
5b4ee69b | 6978 | |
14f9c5c9 | 6979 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 6980 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
6981 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
6982 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
6983 | } |
6984 | ||
6985 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 6986 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
6987 | returns the type of the controlling discriminant for the variant. |
6988 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 6989 | |
d2e4a39e | 6990 | struct type * |
ebf56fd3 | 6991 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 6992 | { |
a121b7c1 | 6993 | const char *name = ada_variant_discrim_name (var_type); |
5b4ee69b | 6994 | |
988f6b3d | 6995 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1); |
14f9c5c9 AS |
6996 | } |
6997 | ||
4c4b4cd2 | 6998 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 6999 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 7000 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
7001 | |
7002 | int | |
ebf56fd3 | 7003 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 7004 | { |
d2e4a39e | 7005 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 7006 | |
14f9c5c9 AS |
7007 | return (name != NULL && name[0] == 'O'); |
7008 | } | |
7009 | ||
7010 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
7011 | returns the name of the discriminant controlling the variant. |
7012 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 7013 | |
a121b7c1 | 7014 | const char * |
ebf56fd3 | 7015 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 7016 | { |
d2e4a39e | 7017 | static char *result = NULL; |
14f9c5c9 | 7018 | static size_t result_len = 0; |
d2e4a39e AS |
7019 | struct type *type; |
7020 | const char *name; | |
7021 | const char *discrim_end; | |
7022 | const char *discrim_start; | |
14f9c5c9 AS |
7023 | |
7024 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
7025 | type = TYPE_TARGET_TYPE (type0); | |
7026 | else | |
7027 | type = type0; | |
7028 | ||
7029 | name = ada_type_name (type); | |
7030 | ||
7031 | if (name == NULL || name[0] == '\000') | |
7032 | return ""; | |
7033 | ||
7034 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
7035 | discrim_end -= 1) | |
7036 | { | |
61012eef | 7037 | if (startswith (discrim_end, "___XVN")) |
4c4b4cd2 | 7038 | break; |
14f9c5c9 AS |
7039 | } |
7040 | if (discrim_end == name) | |
7041 | return ""; | |
7042 | ||
d2e4a39e | 7043 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
7044 | discrim_start -= 1) |
7045 | { | |
d2e4a39e | 7046 | if (discrim_start == name + 1) |
4c4b4cd2 | 7047 | return ""; |
76a01679 | 7048 | if ((discrim_start > name + 3 |
61012eef | 7049 | && startswith (discrim_start - 3, "___")) |
4c4b4cd2 PH |
7050 | || discrim_start[-1] == '.') |
7051 | break; | |
14f9c5c9 AS |
7052 | } |
7053 | ||
7054 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
7055 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 7056 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
7057 | return result; |
7058 | } | |
7059 | ||
4c4b4cd2 PH |
7060 | /* Scan STR for a subtype-encoded number, beginning at position K. |
7061 | Put the position of the character just past the number scanned in | |
7062 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
7063 | Return 1 if there was a valid number at the given position, and 0 | |
7064 | otherwise. A "subtype-encoded" number consists of the absolute value | |
7065 | in decimal, followed by the letter 'm' to indicate a negative number. | |
7066 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
7067 | |
7068 | int | |
d2e4a39e | 7069 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
7070 | { |
7071 | ULONGEST RU; | |
7072 | ||
d2e4a39e | 7073 | if (!isdigit (str[k])) |
14f9c5c9 AS |
7074 | return 0; |
7075 | ||
4c4b4cd2 | 7076 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 7077 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 7078 | LONGEST. */ |
14f9c5c9 AS |
7079 | RU = 0; |
7080 | while (isdigit (str[k])) | |
7081 | { | |
d2e4a39e | 7082 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
7083 | k += 1; |
7084 | } | |
7085 | ||
d2e4a39e | 7086 | if (str[k] == 'm') |
14f9c5c9 AS |
7087 | { |
7088 | if (R != NULL) | |
4c4b4cd2 | 7089 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
7090 | k += 1; |
7091 | } | |
7092 | else if (R != NULL) | |
7093 | *R = (LONGEST) RU; | |
7094 | ||
4c4b4cd2 | 7095 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
7096 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
7097 | number representable as a LONGEST (although either would probably work | |
7098 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 7099 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
7100 | |
7101 | if (new_k != NULL) | |
7102 | *new_k = k; | |
7103 | return 1; | |
7104 | } | |
7105 | ||
4c4b4cd2 PH |
7106 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
7107 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
7108 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 7109 | |
d2e4a39e | 7110 | int |
ebf56fd3 | 7111 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 7112 | { |
d2e4a39e | 7113 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
7114 | int p; |
7115 | ||
7116 | p = 0; | |
7117 | while (1) | |
7118 | { | |
d2e4a39e | 7119 | switch (name[p]) |
4c4b4cd2 PH |
7120 | { |
7121 | case '\0': | |
7122 | return 0; | |
7123 | case 'S': | |
7124 | { | |
7125 | LONGEST W; | |
5b4ee69b | 7126 | |
4c4b4cd2 PH |
7127 | if (!ada_scan_number (name, p + 1, &W, &p)) |
7128 | return 0; | |
7129 | if (val == W) | |
7130 | return 1; | |
7131 | break; | |
7132 | } | |
7133 | case 'R': | |
7134 | { | |
7135 | LONGEST L, U; | |
5b4ee69b | 7136 | |
4c4b4cd2 PH |
7137 | if (!ada_scan_number (name, p + 1, &L, &p) |
7138 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
7139 | return 0; | |
7140 | if (val >= L && val <= U) | |
7141 | return 1; | |
7142 | break; | |
7143 | } | |
7144 | case 'O': | |
7145 | return 1; | |
7146 | default: | |
7147 | return 0; | |
7148 | } | |
7149 | } | |
7150 | } | |
7151 | ||
0963b4bd | 7152 | /* FIXME: Lots of redundancy below. Try to consolidate. */ |
4c4b4cd2 PH |
7153 | |
7154 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
7155 | ARG_TYPE, extract and return the value of one of its (non-static) | |
7156 | fields. FIELDNO says which field. Differs from value_primitive_field | |
7157 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 7158 | |
4c4b4cd2 | 7159 | static struct value * |
d2e4a39e | 7160 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 7161 | struct type *arg_type) |
14f9c5c9 | 7162 | { |
14f9c5c9 AS |
7163 | struct type *type; |
7164 | ||
61ee279c | 7165 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
7166 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
7167 | ||
4504bbde TT |
7168 | /* Handle packed fields. It might be that the field is not packed |
7169 | relative to its containing structure, but the structure itself is | |
7170 | packed; in this case we must take the bit-field path. */ | |
7171 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0 || value_bitpos (arg1) != 0) | |
14f9c5c9 AS |
7172 | { |
7173 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
7174 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 7175 | |
0fd88904 | 7176 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
7177 | offset + bit_pos / 8, |
7178 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
7179 | } |
7180 | else | |
7181 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
7182 | } | |
7183 | ||
52ce6436 PH |
7184 | /* Find field with name NAME in object of type TYPE. If found, |
7185 | set the following for each argument that is non-null: | |
7186 | - *FIELD_TYPE_P to the field's type; | |
7187 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
7188 | an object of that type; | |
7189 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
7190 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
7191 | 0 otherwise; | |
7192 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
7193 | fields up to but not including the desired field, or by the total | |
7194 | number of fields if not found. A NULL value of NAME never | |
7195 | matches; the function just counts visible fields in this case. | |
7196 | ||
828d5846 XR |
7197 | Notice that we need to handle when a tagged record hierarchy |
7198 | has some components with the same name, like in this scenario: | |
7199 | ||
7200 | type Top_T is tagged record | |
7201 | N : Integer := 1; | |
7202 | U : Integer := 974; | |
7203 | A : Integer := 48; | |
7204 | end record; | |
7205 | ||
7206 | type Middle_T is new Top.Top_T with record | |
7207 | N : Character := 'a'; | |
7208 | C : Integer := 3; | |
7209 | end record; | |
7210 | ||
7211 | type Bottom_T is new Middle.Middle_T with record | |
7212 | N : Float := 4.0; | |
7213 | C : Character := '5'; | |
7214 | X : Integer := 6; | |
7215 | A : Character := 'J'; | |
7216 | end record; | |
7217 | ||
7218 | Let's say we now have a variable declared and initialized as follow: | |
7219 | ||
7220 | TC : Top_A := new Bottom_T; | |
7221 | ||
7222 | And then we use this variable to call this function | |
7223 | ||
7224 | procedure Assign (Obj: in out Top_T; TV : Integer); | |
7225 | ||
7226 | as follow: | |
7227 | ||
7228 | Assign (Top_T (B), 12); | |
7229 | ||
7230 | Now, we're in the debugger, and we're inside that procedure | |
7231 | then and we want to print the value of obj.c: | |
7232 | ||
7233 | Usually, the tagged record or one of the parent type owns the | |
7234 | component to print and there's no issue but in this particular | |
7235 | case, what does it mean to ask for Obj.C? Since the actual | |
7236 | type for object is type Bottom_T, it could mean two things: type | |
7237 | component C from the Middle_T view, but also component C from | |
7238 | Bottom_T. So in that "undefined" case, when the component is | |
7239 | not found in the non-resolved type (which includes all the | |
7240 | components of the parent type), then resolve it and see if we | |
7241 | get better luck once expanded. | |
7242 | ||
7243 | In the case of homonyms in the derived tagged type, we don't | |
7244 | guaranty anything, and pick the one that's easiest for us | |
7245 | to program. | |
7246 | ||
0963b4bd | 7247 | Returns 1 if found, 0 otherwise. */ |
52ce6436 | 7248 | |
4c4b4cd2 | 7249 | static int |
0d5cff50 | 7250 | find_struct_field (const char *name, struct type *type, int offset, |
76a01679 | 7251 | struct type **field_type_p, |
52ce6436 PH |
7252 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
7253 | int *index_p) | |
4c4b4cd2 PH |
7254 | { |
7255 | int i; | |
828d5846 | 7256 | int parent_offset = -1; |
4c4b4cd2 | 7257 | |
61ee279c | 7258 | type = ada_check_typedef (type); |
76a01679 | 7259 | |
52ce6436 PH |
7260 | if (field_type_p != NULL) |
7261 | *field_type_p = NULL; | |
7262 | if (byte_offset_p != NULL) | |
d5d6fca5 | 7263 | *byte_offset_p = 0; |
52ce6436 PH |
7264 | if (bit_offset_p != NULL) |
7265 | *bit_offset_p = 0; | |
7266 | if (bit_size_p != NULL) | |
7267 | *bit_size_p = 0; | |
7268 | ||
7269 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
7270 | { |
7271 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
7272 | int fld_offset = offset + bit_pos / 8; | |
0d5cff50 | 7273 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
76a01679 | 7274 | |
4c4b4cd2 PH |
7275 | if (t_field_name == NULL) |
7276 | continue; | |
7277 | ||
828d5846 XR |
7278 | else if (ada_is_parent_field (type, i)) |
7279 | { | |
7280 | /* This is a field pointing us to the parent type of a tagged | |
7281 | type. As hinted in this function's documentation, we give | |
7282 | preference to fields in the current record first, so what | |
7283 | we do here is just record the index of this field before | |
7284 | we skip it. If it turns out we couldn't find our field | |
7285 | in the current record, then we'll get back to it and search | |
7286 | inside it whether the field might exist in the parent. */ | |
7287 | ||
7288 | parent_offset = i; | |
7289 | continue; | |
7290 | } | |
7291 | ||
52ce6436 | 7292 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
7293 | { |
7294 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5b4ee69b | 7295 | |
52ce6436 PH |
7296 | if (field_type_p != NULL) |
7297 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
7298 | if (byte_offset_p != NULL) | |
7299 | *byte_offset_p = fld_offset; | |
7300 | if (bit_offset_p != NULL) | |
7301 | *bit_offset_p = bit_pos % 8; | |
7302 | if (bit_size_p != NULL) | |
7303 | *bit_size_p = bit_size; | |
76a01679 JB |
7304 | return 1; |
7305 | } | |
4c4b4cd2 PH |
7306 | else if (ada_is_wrapper_field (type, i)) |
7307 | { | |
52ce6436 PH |
7308 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
7309 | field_type_p, byte_offset_p, bit_offset_p, | |
7310 | bit_size_p, index_p)) | |
76a01679 JB |
7311 | return 1; |
7312 | } | |
4c4b4cd2 PH |
7313 | else if (ada_is_variant_part (type, i)) |
7314 | { | |
52ce6436 PH |
7315 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
7316 | fixed type?? */ | |
4c4b4cd2 | 7317 | int j; |
52ce6436 PH |
7318 | struct type *field_type |
7319 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 7320 | |
52ce6436 | 7321 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 7322 | { |
76a01679 JB |
7323 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
7324 | fld_offset | |
7325 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
7326 | field_type_p, byte_offset_p, | |
52ce6436 | 7327 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 7328 | return 1; |
4c4b4cd2 PH |
7329 | } |
7330 | } | |
52ce6436 PH |
7331 | else if (index_p != NULL) |
7332 | *index_p += 1; | |
4c4b4cd2 | 7333 | } |
828d5846 XR |
7334 | |
7335 | /* Field not found so far. If this is a tagged type which | |
7336 | has a parent, try finding that field in the parent now. */ | |
7337 | ||
7338 | if (parent_offset != -1) | |
7339 | { | |
7340 | int bit_pos = TYPE_FIELD_BITPOS (type, parent_offset); | |
7341 | int fld_offset = offset + bit_pos / 8; | |
7342 | ||
7343 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, parent_offset), | |
7344 | fld_offset, field_type_p, byte_offset_p, | |
7345 | bit_offset_p, bit_size_p, index_p)) | |
7346 | return 1; | |
7347 | } | |
7348 | ||
4c4b4cd2 PH |
7349 | return 0; |
7350 | } | |
7351 | ||
0963b4bd | 7352 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 7353 | |
52ce6436 PH |
7354 | static int |
7355 | num_visible_fields (struct type *type) | |
7356 | { | |
7357 | int n; | |
5b4ee69b | 7358 | |
52ce6436 PH |
7359 | n = 0; |
7360 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
7361 | return n; | |
7362 | } | |
14f9c5c9 | 7363 | |
4c4b4cd2 | 7364 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
7365 | and search in it assuming it has (class) type TYPE. |
7366 | If found, return value, else return NULL. | |
7367 | ||
828d5846 XR |
7368 | Searches recursively through wrapper fields (e.g., '_parent'). |
7369 | ||
7370 | In the case of homonyms in the tagged types, please refer to the | |
7371 | long explanation in find_struct_field's function documentation. */ | |
14f9c5c9 | 7372 | |
4c4b4cd2 | 7373 | static struct value * |
108d56a4 | 7374 | ada_search_struct_field (const char *name, struct value *arg, int offset, |
4c4b4cd2 | 7375 | struct type *type) |
14f9c5c9 AS |
7376 | { |
7377 | int i; | |
828d5846 | 7378 | int parent_offset = -1; |
14f9c5c9 | 7379 | |
5b4ee69b | 7380 | type = ada_check_typedef (type); |
52ce6436 | 7381 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 | 7382 | { |
0d5cff50 | 7383 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 AS |
7384 | |
7385 | if (t_field_name == NULL) | |
4c4b4cd2 | 7386 | continue; |
14f9c5c9 | 7387 | |
828d5846 XR |
7388 | else if (ada_is_parent_field (type, i)) |
7389 | { | |
7390 | /* This is a field pointing us to the parent type of a tagged | |
7391 | type. As hinted in this function's documentation, we give | |
7392 | preference to fields in the current record first, so what | |
7393 | we do here is just record the index of this field before | |
7394 | we skip it. If it turns out we couldn't find our field | |
7395 | in the current record, then we'll get back to it and search | |
7396 | inside it whether the field might exist in the parent. */ | |
7397 | ||
7398 | parent_offset = i; | |
7399 | continue; | |
7400 | } | |
7401 | ||
14f9c5c9 | 7402 | else if (field_name_match (t_field_name, name)) |
4c4b4cd2 | 7403 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
7404 | |
7405 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 7406 | { |
0963b4bd | 7407 | struct value *v = /* Do not let indent join lines here. */ |
06d5cf63 JB |
7408 | ada_search_struct_field (name, arg, |
7409 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
7410 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 7411 | |
4c4b4cd2 PH |
7412 | if (v != NULL) |
7413 | return v; | |
7414 | } | |
14f9c5c9 AS |
7415 | |
7416 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 7417 | { |
0963b4bd | 7418 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 7419 | int j; |
5b4ee69b MS |
7420 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
7421 | i)); | |
4c4b4cd2 PH |
7422 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
7423 | ||
52ce6436 | 7424 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 7425 | { |
0963b4bd MS |
7426 | struct value *v = ada_search_struct_field /* Force line |
7427 | break. */ | |
06d5cf63 JB |
7428 | (name, arg, |
7429 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
7430 | TYPE_FIELD_TYPE (field_type, j)); | |
5b4ee69b | 7431 | |
4c4b4cd2 PH |
7432 | if (v != NULL) |
7433 | return v; | |
7434 | } | |
7435 | } | |
14f9c5c9 | 7436 | } |
828d5846 XR |
7437 | |
7438 | /* Field not found so far. If this is a tagged type which | |
7439 | has a parent, try finding that field in the parent now. */ | |
7440 | ||
7441 | if (parent_offset != -1) | |
7442 | { | |
7443 | struct value *v = ada_search_struct_field ( | |
7444 | name, arg, offset + TYPE_FIELD_BITPOS (type, parent_offset) / 8, | |
7445 | TYPE_FIELD_TYPE (type, parent_offset)); | |
7446 | ||
7447 | if (v != NULL) | |
7448 | return v; | |
7449 | } | |
7450 | ||
14f9c5c9 AS |
7451 | return NULL; |
7452 | } | |
d2e4a39e | 7453 | |
52ce6436 PH |
7454 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
7455 | int, struct type *); | |
7456 | ||
7457 | ||
7458 | /* Return field #INDEX in ARG, where the index is that returned by | |
7459 | * find_struct_field through its INDEX_P argument. Adjust the address | |
7460 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
0963b4bd | 7461 | * If found, return value, else return NULL. */ |
52ce6436 PH |
7462 | |
7463 | static struct value * | |
7464 | ada_index_struct_field (int index, struct value *arg, int offset, | |
7465 | struct type *type) | |
7466 | { | |
7467 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
7468 | } | |
7469 | ||
7470 | ||
7471 | /* Auxiliary function for ada_index_struct_field. Like | |
7472 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
0963b4bd | 7473 | * *INDEX_P. */ |
52ce6436 PH |
7474 | |
7475 | static struct value * | |
7476 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
7477 | struct type *type) | |
7478 | { | |
7479 | int i; | |
7480 | type = ada_check_typedef (type); | |
7481 | ||
7482 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
7483 | { | |
7484 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
7485 | continue; | |
7486 | else if (ada_is_wrapper_field (type, i)) | |
7487 | { | |
0963b4bd | 7488 | struct value *v = /* Do not let indent join lines here. */ |
52ce6436 PH |
7489 | ada_index_struct_field_1 (index_p, arg, |
7490 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
7491 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 7492 | |
52ce6436 PH |
7493 | if (v != NULL) |
7494 | return v; | |
7495 | } | |
7496 | ||
7497 | else if (ada_is_variant_part (type, i)) | |
7498 | { | |
7499 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
0963b4bd | 7500 | find_struct_field. */ |
52ce6436 PH |
7501 | error (_("Cannot assign this kind of variant record")); |
7502 | } | |
7503 | else if (*index_p == 0) | |
7504 | return ada_value_primitive_field (arg, offset, i, type); | |
7505 | else | |
7506 | *index_p -= 1; | |
7507 | } | |
7508 | return NULL; | |
7509 | } | |
7510 | ||
4c4b4cd2 PH |
7511 | /* Given ARG, a value of type (pointer or reference to a)* |
7512 | structure/union, extract the component named NAME from the ultimate | |
7513 | target structure/union and return it as a value with its | |
f5938064 | 7514 | appropriate type. |
14f9c5c9 | 7515 | |
4c4b4cd2 PH |
7516 | The routine searches for NAME among all members of the structure itself |
7517 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
7518 | (e.g., '_parent'). |
7519 | ||
03ee6b2e PH |
7520 | If NO_ERR, then simply return NULL in case of error, rather than |
7521 | calling error. */ | |
14f9c5c9 | 7522 | |
d2e4a39e | 7523 | struct value * |
a121b7c1 | 7524 | ada_value_struct_elt (struct value *arg, const char *name, int no_err) |
14f9c5c9 | 7525 | { |
4c4b4cd2 | 7526 | struct type *t, *t1; |
d2e4a39e | 7527 | struct value *v; |
1f5d1570 | 7528 | int check_tag; |
14f9c5c9 | 7529 | |
4c4b4cd2 | 7530 | v = NULL; |
df407dfe | 7531 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
7532 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
7533 | { | |
7534 | t1 = TYPE_TARGET_TYPE (t); | |
7535 | if (t1 == NULL) | |
03ee6b2e | 7536 | goto BadValue; |
61ee279c | 7537 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 7538 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 7539 | { |
994b9211 | 7540 | arg = coerce_ref (arg); |
76a01679 JB |
7541 | t = t1; |
7542 | } | |
4c4b4cd2 | 7543 | } |
14f9c5c9 | 7544 | |
4c4b4cd2 PH |
7545 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
7546 | { | |
7547 | t1 = TYPE_TARGET_TYPE (t); | |
7548 | if (t1 == NULL) | |
03ee6b2e | 7549 | goto BadValue; |
61ee279c | 7550 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 7551 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
7552 | { |
7553 | arg = value_ind (arg); | |
7554 | t = t1; | |
7555 | } | |
4c4b4cd2 | 7556 | else |
76a01679 | 7557 | break; |
4c4b4cd2 | 7558 | } |
14f9c5c9 | 7559 | |
4c4b4cd2 | 7560 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 7561 | goto BadValue; |
14f9c5c9 | 7562 | |
4c4b4cd2 PH |
7563 | if (t1 == t) |
7564 | v = ada_search_struct_field (name, arg, 0, t); | |
7565 | else | |
7566 | { | |
7567 | int bit_offset, bit_size, byte_offset; | |
7568 | struct type *field_type; | |
7569 | CORE_ADDR address; | |
7570 | ||
76a01679 | 7571 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
b50d69b5 | 7572 | address = value_address (ada_value_ind (arg)); |
4c4b4cd2 | 7573 | else |
b50d69b5 | 7574 | address = value_address (ada_coerce_ref (arg)); |
14f9c5c9 | 7575 | |
828d5846 XR |
7576 | /* Check to see if this is a tagged type. We also need to handle |
7577 | the case where the type is a reference to a tagged type, but | |
7578 | we have to be careful to exclude pointers to tagged types. | |
7579 | The latter should be shown as usual (as a pointer), whereas | |
7580 | a reference should mostly be transparent to the user. */ | |
7581 | ||
7582 | if (ada_is_tagged_type (t1, 0) | |
7583 | || (TYPE_CODE (t1) == TYPE_CODE_REF | |
7584 | && ada_is_tagged_type (TYPE_TARGET_TYPE (t1), 0))) | |
7585 | { | |
7586 | /* We first try to find the searched field in the current type. | |
7587 | If not found then let's look in the fixed type. */ | |
7588 | ||
7589 | if (!find_struct_field (name, t1, 0, | |
7590 | &field_type, &byte_offset, &bit_offset, | |
7591 | &bit_size, NULL)) | |
1f5d1570 JG |
7592 | check_tag = 1; |
7593 | else | |
7594 | check_tag = 0; | |
828d5846 XR |
7595 | } |
7596 | else | |
1f5d1570 JG |
7597 | check_tag = 0; |
7598 | ||
7599 | /* Convert to fixed type in all cases, so that we have proper | |
7600 | offsets to each field in unconstrained record types. */ | |
7601 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, | |
7602 | address, NULL, check_tag); | |
828d5846 | 7603 | |
76a01679 JB |
7604 | if (find_struct_field (name, t1, 0, |
7605 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 7606 | &bit_size, NULL)) |
76a01679 JB |
7607 | { |
7608 | if (bit_size != 0) | |
7609 | { | |
714e53ab PH |
7610 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
7611 | arg = ada_coerce_ref (arg); | |
7612 | else | |
7613 | arg = ada_value_ind (arg); | |
76a01679 JB |
7614 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
7615 | bit_offset, bit_size, | |
7616 | field_type); | |
7617 | } | |
7618 | else | |
f5938064 | 7619 | v = value_at_lazy (field_type, address + byte_offset); |
76a01679 JB |
7620 | } |
7621 | } | |
7622 | ||
03ee6b2e PH |
7623 | if (v != NULL || no_err) |
7624 | return v; | |
7625 | else | |
323e0a4a | 7626 | error (_("There is no member named %s."), name); |
14f9c5c9 | 7627 | |
03ee6b2e PH |
7628 | BadValue: |
7629 | if (no_err) | |
7630 | return NULL; | |
7631 | else | |
0963b4bd MS |
7632 | error (_("Attempt to extract a component of " |
7633 | "a value that is not a record.")); | |
14f9c5c9 AS |
7634 | } |
7635 | ||
3b4de39c | 7636 | /* Return a string representation of type TYPE. */ |
99bbb428 | 7637 | |
3b4de39c | 7638 | static std::string |
99bbb428 PA |
7639 | type_as_string (struct type *type) |
7640 | { | |
d7e74731 | 7641 | string_file tmp_stream; |
99bbb428 | 7642 | |
d7e74731 | 7643 | type_print (type, "", &tmp_stream, -1); |
99bbb428 | 7644 | |
d7e74731 | 7645 | return std::move (tmp_stream.string ()); |
99bbb428 PA |
7646 | } |
7647 | ||
14f9c5c9 | 7648 | /* Given a type TYPE, look up the type of the component of type named NAME. |
4c4b4cd2 PH |
7649 | If DISPP is non-null, add its byte displacement from the beginning of a |
7650 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
7651 | work for packed fields). |
7652 | ||
7653 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 7654 | followed by "___". |
14f9c5c9 | 7655 | |
0963b4bd | 7656 | TYPE can be either a struct or union. If REFOK, TYPE may also |
4c4b4cd2 PH |
7657 | be a (pointer or reference)+ to a struct or union, and the |
7658 | ultimate target type will be searched. | |
14f9c5c9 AS |
7659 | |
7660 | Looks recursively into variant clauses and parent types. | |
7661 | ||
828d5846 XR |
7662 | In the case of homonyms in the tagged types, please refer to the |
7663 | long explanation in find_struct_field's function documentation. | |
7664 | ||
4c4b4cd2 PH |
7665 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
7666 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 7667 | |
4c4b4cd2 | 7668 | static struct type * |
a121b7c1 | 7669 | ada_lookup_struct_elt_type (struct type *type, const char *name, int refok, |
988f6b3d | 7670 | int noerr) |
14f9c5c9 AS |
7671 | { |
7672 | int i; | |
828d5846 | 7673 | int parent_offset = -1; |
14f9c5c9 AS |
7674 | |
7675 | if (name == NULL) | |
7676 | goto BadName; | |
7677 | ||
76a01679 | 7678 | if (refok && type != NULL) |
4c4b4cd2 PH |
7679 | while (1) |
7680 | { | |
61ee279c | 7681 | type = ada_check_typedef (type); |
76a01679 JB |
7682 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
7683 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
7684 | break; | |
7685 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 7686 | } |
14f9c5c9 | 7687 | |
76a01679 | 7688 | if (type == NULL |
1265e4aa JB |
7689 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
7690 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 7691 | { |
4c4b4cd2 | 7692 | if (noerr) |
76a01679 | 7693 | return NULL; |
99bbb428 | 7694 | |
3b4de39c PA |
7695 | error (_("Type %s is not a structure or union type"), |
7696 | type != NULL ? type_as_string (type).c_str () : _("(null)")); | |
14f9c5c9 AS |
7697 | } |
7698 | ||
7699 | type = to_static_fixed_type (type); | |
7700 | ||
7701 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
7702 | { | |
0d5cff50 | 7703 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 | 7704 | struct type *t; |
d2e4a39e | 7705 | |
14f9c5c9 | 7706 | if (t_field_name == NULL) |
4c4b4cd2 | 7707 | continue; |
14f9c5c9 | 7708 | |
828d5846 XR |
7709 | else if (ada_is_parent_field (type, i)) |
7710 | { | |
7711 | /* This is a field pointing us to the parent type of a tagged | |
7712 | type. As hinted in this function's documentation, we give | |
7713 | preference to fields in the current record first, so what | |
7714 | we do here is just record the index of this field before | |
7715 | we skip it. If it turns out we couldn't find our field | |
7716 | in the current record, then we'll get back to it and search | |
7717 | inside it whether the field might exist in the parent. */ | |
7718 | ||
7719 | parent_offset = i; | |
7720 | continue; | |
7721 | } | |
7722 | ||
14f9c5c9 | 7723 | else if (field_name_match (t_field_name, name)) |
988f6b3d | 7724 | return TYPE_FIELD_TYPE (type, i); |
14f9c5c9 AS |
7725 | |
7726 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 7727 | { |
4c4b4cd2 | 7728 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, |
988f6b3d | 7729 | 0, 1); |
4c4b4cd2 | 7730 | if (t != NULL) |
988f6b3d | 7731 | return t; |
4c4b4cd2 | 7732 | } |
14f9c5c9 AS |
7733 | |
7734 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
7735 | { |
7736 | int j; | |
5b4ee69b MS |
7737 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
7738 | i)); | |
4c4b4cd2 PH |
7739 | |
7740 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
7741 | { | |
b1f33ddd JB |
7742 | /* FIXME pnh 2008/01/26: We check for a field that is |
7743 | NOT wrapped in a struct, since the compiler sometimes | |
7744 | generates these for unchecked variant types. Revisit | |
0963b4bd | 7745 | if the compiler changes this practice. */ |
0d5cff50 | 7746 | const char *v_field_name = TYPE_FIELD_NAME (field_type, j); |
988f6b3d | 7747 | |
b1f33ddd JB |
7748 | if (v_field_name != NULL |
7749 | && field_name_match (v_field_name, name)) | |
460efde1 | 7750 | t = TYPE_FIELD_TYPE (field_type, j); |
b1f33ddd | 7751 | else |
0963b4bd MS |
7752 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, |
7753 | j), | |
988f6b3d | 7754 | name, 0, 1); |
b1f33ddd | 7755 | |
4c4b4cd2 | 7756 | if (t != NULL) |
988f6b3d | 7757 | return t; |
4c4b4cd2 PH |
7758 | } |
7759 | } | |
14f9c5c9 AS |
7760 | |
7761 | } | |
7762 | ||
828d5846 XR |
7763 | /* Field not found so far. If this is a tagged type which |
7764 | has a parent, try finding that field in the parent now. */ | |
7765 | ||
7766 | if (parent_offset != -1) | |
7767 | { | |
7768 | struct type *t; | |
7769 | ||
7770 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, parent_offset), | |
7771 | name, 0, 1); | |
7772 | if (t != NULL) | |
7773 | return t; | |
7774 | } | |
7775 | ||
14f9c5c9 | 7776 | BadName: |
d2e4a39e | 7777 | if (!noerr) |
14f9c5c9 | 7778 | { |
2b2798cc | 7779 | const char *name_str = name != NULL ? name : _("<null>"); |
99bbb428 PA |
7780 | |
7781 | error (_("Type %s has no component named %s"), | |
3b4de39c | 7782 | type_as_string (type).c_str (), name_str); |
14f9c5c9 AS |
7783 | } |
7784 | ||
7785 | return NULL; | |
7786 | } | |
7787 | ||
b1f33ddd JB |
7788 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7789 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
7790 | represents an unchecked union (that is, the variant part of a | |
0963b4bd | 7791 | record that is named in an Unchecked_Union pragma). */ |
b1f33ddd JB |
7792 | |
7793 | static int | |
7794 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
7795 | { | |
a121b7c1 | 7796 | const char *discrim_name = ada_variant_discrim_name (var_type); |
5b4ee69b | 7797 | |
988f6b3d | 7798 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1) == NULL); |
b1f33ddd JB |
7799 | } |
7800 | ||
7801 | ||
14f9c5c9 AS |
7802 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7803 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
7804 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
7805 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 7806 | |
d2e4a39e | 7807 | int |
ebf56fd3 | 7808 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 7809 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
7810 | { |
7811 | int others_clause; | |
7812 | int i; | |
a121b7c1 | 7813 | const char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
7814 | struct value *outer; |
7815 | struct value *discrim; | |
14f9c5c9 AS |
7816 | LONGEST discrim_val; |
7817 | ||
012370f6 TT |
7818 | /* Using plain value_from_contents_and_address here causes problems |
7819 | because we will end up trying to resolve a type that is currently | |
7820 | being constructed. */ | |
7821 | outer = value_from_contents_and_address_unresolved (outer_type, | |
7822 | outer_valaddr, 0); | |
0c281816 JB |
7823 | discrim = ada_value_struct_elt (outer, discrim_name, 1); |
7824 | if (discrim == NULL) | |
14f9c5c9 | 7825 | return -1; |
0c281816 | 7826 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
7827 | |
7828 | others_clause = -1; | |
7829 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
7830 | { | |
7831 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 7832 | others_clause = i; |
14f9c5c9 | 7833 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 7834 | return i; |
14f9c5c9 AS |
7835 | } |
7836 | ||
7837 | return others_clause; | |
7838 | } | |
d2e4a39e | 7839 | \f |
14f9c5c9 AS |
7840 | |
7841 | ||
4c4b4cd2 | 7842 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
7843 | |
7844 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
7845 | (i.e., a size that is not statically recorded in the debugging | |
7846 | data) does not accurately reflect the size or layout of the value. | |
7847 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 7848 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
7849 | |
7850 | /* There is a subtle and tricky problem here. In general, we cannot | |
7851 | determine the size of dynamic records without its data. However, | |
7852 | the 'struct value' data structure, which GDB uses to represent | |
7853 | quantities in the inferior process (the target), requires the size | |
7854 | of the type at the time of its allocation in order to reserve space | |
7855 | for GDB's internal copy of the data. That's why the | |
7856 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 7857 | rather than struct value*s. |
14f9c5c9 AS |
7858 | |
7859 | However, GDB's internal history variables ($1, $2, etc.) are | |
7860 | struct value*s containing internal copies of the data that are not, in | |
7861 | general, the same as the data at their corresponding addresses in | |
7862 | the target. Fortunately, the types we give to these values are all | |
7863 | conventional, fixed-size types (as per the strategy described | |
7864 | above), so that we don't usually have to perform the | |
7865 | 'to_fixed_xxx_type' conversions to look at their values. | |
7866 | Unfortunately, there is one exception: if one of the internal | |
7867 | history variables is an array whose elements are unconstrained | |
7868 | records, then we will need to create distinct fixed types for each | |
7869 | element selected. */ | |
7870 | ||
7871 | /* The upshot of all of this is that many routines take a (type, host | |
7872 | address, target address) triple as arguments to represent a value. | |
7873 | The host address, if non-null, is supposed to contain an internal | |
7874 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 7875 | target at the target address. */ |
14f9c5c9 AS |
7876 | |
7877 | /* Assuming that VAL0 represents a pointer value, the result of | |
7878 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 7879 | dynamic-sized types. */ |
14f9c5c9 | 7880 | |
d2e4a39e AS |
7881 | struct value * |
7882 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 7883 | { |
c48db5ca | 7884 | struct value *val = value_ind (val0); |
5b4ee69b | 7885 | |
b50d69b5 JG |
7886 | if (ada_is_tagged_type (value_type (val), 0)) |
7887 | val = ada_tag_value_at_base_address (val); | |
7888 | ||
4c4b4cd2 | 7889 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
7890 | } |
7891 | ||
7892 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
7893 | qualifiers on VAL0. */ |
7894 | ||
d2e4a39e AS |
7895 | static struct value * |
7896 | ada_coerce_ref (struct value *val0) | |
7897 | { | |
df407dfe | 7898 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
7899 | { |
7900 | struct value *val = val0; | |
5b4ee69b | 7901 | |
994b9211 | 7902 | val = coerce_ref (val); |
b50d69b5 JG |
7903 | |
7904 | if (ada_is_tagged_type (value_type (val), 0)) | |
7905 | val = ada_tag_value_at_base_address (val); | |
7906 | ||
4c4b4cd2 | 7907 | return ada_to_fixed_value (val); |
d2e4a39e AS |
7908 | } |
7909 | else | |
14f9c5c9 AS |
7910 | return val0; |
7911 | } | |
7912 | ||
7913 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 7914 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
7915 | |
7916 | static unsigned int | |
ebf56fd3 | 7917 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
7918 | { |
7919 | return (off + alignment - 1) & ~(alignment - 1); | |
7920 | } | |
7921 | ||
4c4b4cd2 | 7922 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
7923 | |
7924 | static unsigned int | |
ebf56fd3 | 7925 | field_alignment (struct type *type, int f) |
14f9c5c9 | 7926 | { |
d2e4a39e | 7927 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 7928 | int len; |
14f9c5c9 AS |
7929 | int align_offset; |
7930 | ||
64a1bf19 JB |
7931 | /* The field name should never be null, unless the debugging information |
7932 | is somehow malformed. In this case, we assume the field does not | |
7933 | require any alignment. */ | |
7934 | if (name == NULL) | |
7935 | return 1; | |
7936 | ||
7937 | len = strlen (name); | |
7938 | ||
4c4b4cd2 PH |
7939 | if (!isdigit (name[len - 1])) |
7940 | return 1; | |
14f9c5c9 | 7941 | |
d2e4a39e | 7942 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
7943 | align_offset = len - 2; |
7944 | else | |
7945 | align_offset = len - 1; | |
7946 | ||
61012eef | 7947 | if (align_offset < 7 || !startswith (name + align_offset - 6, "___XV")) |
14f9c5c9 AS |
7948 | return TARGET_CHAR_BIT; |
7949 | ||
4c4b4cd2 PH |
7950 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
7951 | } | |
7952 | ||
852dff6c | 7953 | /* Find a typedef or tag symbol named NAME. Ignores ambiguity. */ |
4c4b4cd2 | 7954 | |
852dff6c JB |
7955 | static struct symbol * |
7956 | ada_find_any_type_symbol (const char *name) | |
4c4b4cd2 PH |
7957 | { |
7958 | struct symbol *sym; | |
7959 | ||
7960 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
4186eb54 | 7961 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
4c4b4cd2 PH |
7962 | return sym; |
7963 | ||
4186eb54 KS |
7964 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); |
7965 | return sym; | |
14f9c5c9 AS |
7966 | } |
7967 | ||
dddfab26 UW |
7968 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
7969 | solely for types defined by debug info, it will not search the GDB | |
7970 | primitive types. */ | |
4c4b4cd2 | 7971 | |
852dff6c | 7972 | static struct type * |
ebf56fd3 | 7973 | ada_find_any_type (const char *name) |
14f9c5c9 | 7974 | { |
852dff6c | 7975 | struct symbol *sym = ada_find_any_type_symbol (name); |
14f9c5c9 | 7976 | |
14f9c5c9 | 7977 | if (sym != NULL) |
dddfab26 | 7978 | return SYMBOL_TYPE (sym); |
14f9c5c9 | 7979 | |
dddfab26 | 7980 | return NULL; |
14f9c5c9 AS |
7981 | } |
7982 | ||
739593e0 JB |
7983 | /* Given NAME_SYM and an associated BLOCK, find a "renaming" symbol |
7984 | associated with NAME_SYM's name. NAME_SYM may itself be a renaming | |
7985 | symbol, in which case it is returned. Otherwise, this looks for | |
7986 | symbols whose name is that of NAME_SYM suffixed with "___XR". | |
7987 | Return symbol if found, and NULL otherwise. */ | |
4c4b4cd2 PH |
7988 | |
7989 | struct symbol * | |
270140bd | 7990 | ada_find_renaming_symbol (struct symbol *name_sym, const struct block *block) |
aeb5907d | 7991 | { |
739593e0 | 7992 | const char *name = SYMBOL_LINKAGE_NAME (name_sym); |
aeb5907d JB |
7993 | struct symbol *sym; |
7994 | ||
739593e0 JB |
7995 | if (strstr (name, "___XR") != NULL) |
7996 | return name_sym; | |
7997 | ||
aeb5907d JB |
7998 | sym = find_old_style_renaming_symbol (name, block); |
7999 | ||
8000 | if (sym != NULL) | |
8001 | return sym; | |
8002 | ||
0963b4bd | 8003 | /* Not right yet. FIXME pnh 7/20/2007. */ |
852dff6c | 8004 | sym = ada_find_any_type_symbol (name); |
aeb5907d JB |
8005 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) |
8006 | return sym; | |
8007 | else | |
8008 | return NULL; | |
8009 | } | |
8010 | ||
8011 | static struct symbol * | |
270140bd | 8012 | find_old_style_renaming_symbol (const char *name, const struct block *block) |
4c4b4cd2 | 8013 | { |
7f0df278 | 8014 | const struct symbol *function_sym = block_linkage_function (block); |
4c4b4cd2 PH |
8015 | char *rename; |
8016 | ||
8017 | if (function_sym != NULL) | |
8018 | { | |
8019 | /* If the symbol is defined inside a function, NAME is not fully | |
8020 | qualified. This means we need to prepend the function name | |
8021 | as well as adding the ``___XR'' suffix to build the name of | |
8022 | the associated renaming symbol. */ | |
0d5cff50 | 8023 | const char *function_name = SYMBOL_LINKAGE_NAME (function_sym); |
529cad9c PH |
8024 | /* Function names sometimes contain suffixes used |
8025 | for instance to qualify nested subprograms. When building | |
8026 | the XR type name, we need to make sure that this suffix is | |
8027 | not included. So do not include any suffix in the function | |
8028 | name length below. */ | |
69fadcdf | 8029 | int function_name_len = ada_name_prefix_len (function_name); |
76a01679 JB |
8030 | const int rename_len = function_name_len + 2 /* "__" */ |
8031 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 8032 | |
529cad9c | 8033 | /* Strip the suffix if necessary. */ |
69fadcdf JB |
8034 | ada_remove_trailing_digits (function_name, &function_name_len); |
8035 | ada_remove_po_subprogram_suffix (function_name, &function_name_len); | |
8036 | ada_remove_Xbn_suffix (function_name, &function_name_len); | |
529cad9c | 8037 | |
4c4b4cd2 PH |
8038 | /* Library-level functions are a special case, as GNAT adds |
8039 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 8040 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
8041 | have this prefix, so we need to skip this prefix if present. */ |
8042 | if (function_name_len > 5 /* "_ada_" */ | |
8043 | && strstr (function_name, "_ada_") == function_name) | |
69fadcdf JB |
8044 | { |
8045 | function_name += 5; | |
8046 | function_name_len -= 5; | |
8047 | } | |
4c4b4cd2 PH |
8048 | |
8049 | rename = (char *) alloca (rename_len * sizeof (char)); | |
69fadcdf JB |
8050 | strncpy (rename, function_name, function_name_len); |
8051 | xsnprintf (rename + function_name_len, rename_len - function_name_len, | |
8052 | "__%s___XR", name); | |
4c4b4cd2 PH |
8053 | } |
8054 | else | |
8055 | { | |
8056 | const int rename_len = strlen (name) + 6; | |
5b4ee69b | 8057 | |
4c4b4cd2 | 8058 | rename = (char *) alloca (rename_len * sizeof (char)); |
88c15c34 | 8059 | xsnprintf (rename, rename_len * sizeof (char), "%s___XR", name); |
4c4b4cd2 PH |
8060 | } |
8061 | ||
852dff6c | 8062 | return ada_find_any_type_symbol (rename); |
4c4b4cd2 PH |
8063 | } |
8064 | ||
14f9c5c9 | 8065 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 8066 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 8067 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
8068 | otherwise return 0. */ |
8069 | ||
14f9c5c9 | 8070 | int |
d2e4a39e | 8071 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
8072 | { |
8073 | if (type1 == NULL) | |
8074 | return 1; | |
8075 | else if (type0 == NULL) | |
8076 | return 0; | |
8077 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
8078 | return 1; | |
8079 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
8080 | return 0; | |
4c4b4cd2 PH |
8081 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
8082 | return 1; | |
ad82864c | 8083 | else if (ada_is_constrained_packed_array_type (type0)) |
14f9c5c9 | 8084 | return 1; |
4c4b4cd2 PH |
8085 | else if (ada_is_array_descriptor_type (type0) |
8086 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 8087 | return 1; |
aeb5907d JB |
8088 | else |
8089 | { | |
a737d952 TT |
8090 | const char *type0_name = TYPE_NAME (type0); |
8091 | const char *type1_name = TYPE_NAME (type1); | |
aeb5907d JB |
8092 | |
8093 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
8094 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
8095 | return 1; | |
8096 | } | |
14f9c5c9 AS |
8097 | return 0; |
8098 | } | |
8099 | ||
e86ca25f TT |
8100 | /* The name of TYPE, which is its TYPE_NAME. Null if TYPE is |
8101 | null. */ | |
4c4b4cd2 | 8102 | |
0d5cff50 | 8103 | const char * |
d2e4a39e | 8104 | ada_type_name (struct type *type) |
14f9c5c9 | 8105 | { |
d2e4a39e | 8106 | if (type == NULL) |
14f9c5c9 | 8107 | return NULL; |
e86ca25f | 8108 | return TYPE_NAME (type); |
14f9c5c9 AS |
8109 | } |
8110 | ||
b4ba55a1 JB |
8111 | /* Search the list of "descriptive" types associated to TYPE for a type |
8112 | whose name is NAME. */ | |
8113 | ||
8114 | static struct type * | |
8115 | find_parallel_type_by_descriptive_type (struct type *type, const char *name) | |
8116 | { | |
931e5bc3 | 8117 | struct type *result, *tmp; |
b4ba55a1 | 8118 | |
c6044dd1 JB |
8119 | if (ada_ignore_descriptive_types_p) |
8120 | return NULL; | |
8121 | ||
b4ba55a1 JB |
8122 | /* If there no descriptive-type info, then there is no parallel type |
8123 | to be found. */ | |
8124 | if (!HAVE_GNAT_AUX_INFO (type)) | |
8125 | return NULL; | |
8126 | ||
8127 | result = TYPE_DESCRIPTIVE_TYPE (type); | |
8128 | while (result != NULL) | |
8129 | { | |
0d5cff50 | 8130 | const char *result_name = ada_type_name (result); |
b4ba55a1 JB |
8131 | |
8132 | if (result_name == NULL) | |
8133 | { | |
8134 | warning (_("unexpected null name on descriptive type")); | |
8135 | return NULL; | |
8136 | } | |
8137 | ||
8138 | /* If the names match, stop. */ | |
8139 | if (strcmp (result_name, name) == 0) | |
8140 | break; | |
8141 | ||
8142 | /* Otherwise, look at the next item on the list, if any. */ | |
8143 | if (HAVE_GNAT_AUX_INFO (result)) | |
931e5bc3 JG |
8144 | tmp = TYPE_DESCRIPTIVE_TYPE (result); |
8145 | else | |
8146 | tmp = NULL; | |
8147 | ||
8148 | /* If not found either, try after having resolved the typedef. */ | |
8149 | if (tmp != NULL) | |
8150 | result = tmp; | |
b4ba55a1 | 8151 | else |
931e5bc3 | 8152 | { |
f168693b | 8153 | result = check_typedef (result); |
931e5bc3 JG |
8154 | if (HAVE_GNAT_AUX_INFO (result)) |
8155 | result = TYPE_DESCRIPTIVE_TYPE (result); | |
8156 | else | |
8157 | result = NULL; | |
8158 | } | |
b4ba55a1 JB |
8159 | } |
8160 | ||
8161 | /* If we didn't find a match, see whether this is a packed array. With | |
8162 | older compilers, the descriptive type information is either absent or | |
8163 | irrelevant when it comes to packed arrays so the above lookup fails. | |
8164 | Fall back to using a parallel lookup by name in this case. */ | |
12ab9e09 | 8165 | if (result == NULL && ada_is_constrained_packed_array_type (type)) |
b4ba55a1 JB |
8166 | return ada_find_any_type (name); |
8167 | ||
8168 | return result; | |
8169 | } | |
8170 | ||
8171 | /* Find a parallel type to TYPE with the specified NAME, using the | |
8172 | descriptive type taken from the debugging information, if available, | |
8173 | and otherwise using the (slower) name-based method. */ | |
8174 | ||
8175 | static struct type * | |
8176 | ada_find_parallel_type_with_name (struct type *type, const char *name) | |
8177 | { | |
8178 | struct type *result = NULL; | |
8179 | ||
8180 | if (HAVE_GNAT_AUX_INFO (type)) | |
8181 | result = find_parallel_type_by_descriptive_type (type, name); | |
8182 | else | |
8183 | result = ada_find_any_type (name); | |
8184 | ||
8185 | return result; | |
8186 | } | |
8187 | ||
8188 | /* Same as above, but specify the name of the parallel type by appending | |
4c4b4cd2 | 8189 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 8190 | |
d2e4a39e | 8191 | struct type * |
ebf56fd3 | 8192 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 8193 | { |
0d5cff50 | 8194 | char *name; |
fe978cb0 | 8195 | const char *type_name = ada_type_name (type); |
14f9c5c9 | 8196 | int len; |
d2e4a39e | 8197 | |
fe978cb0 | 8198 | if (type_name == NULL) |
14f9c5c9 AS |
8199 | return NULL; |
8200 | ||
fe978cb0 | 8201 | len = strlen (type_name); |
14f9c5c9 | 8202 | |
b4ba55a1 | 8203 | name = (char *) alloca (len + strlen (suffix) + 1); |
14f9c5c9 | 8204 | |
fe978cb0 | 8205 | strcpy (name, type_name); |
14f9c5c9 AS |
8206 | strcpy (name + len, suffix); |
8207 | ||
b4ba55a1 | 8208 | return ada_find_parallel_type_with_name (type, name); |
14f9c5c9 AS |
8209 | } |
8210 | ||
14f9c5c9 | 8211 | /* If TYPE is a variable-size record type, return the corresponding template |
4c4b4cd2 | 8212 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 8213 | |
d2e4a39e AS |
8214 | static struct type * |
8215 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 8216 | { |
61ee279c | 8217 | type = ada_check_typedef (type); |
14f9c5c9 AS |
8218 | |
8219 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 8220 | || ada_type_name (type) == NULL) |
14f9c5c9 | 8221 | return NULL; |
d2e4a39e | 8222 | else |
14f9c5c9 AS |
8223 | { |
8224 | int len = strlen (ada_type_name (type)); | |
5b4ee69b | 8225 | |
4c4b4cd2 PH |
8226 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
8227 | return type; | |
14f9c5c9 | 8228 | else |
4c4b4cd2 | 8229 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
8230 | } |
8231 | } | |
8232 | ||
8233 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 8234 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 8235 | |
d2e4a39e AS |
8236 | static int |
8237 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
8238 | { |
8239 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
5b4ee69b | 8240 | |
d2e4a39e | 8241 | return name != NULL |
14f9c5c9 AS |
8242 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
8243 | && strstr (name, "___XVL") != NULL; | |
8244 | } | |
8245 | ||
4c4b4cd2 PH |
8246 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
8247 | represent a variant record type. */ | |
14f9c5c9 | 8248 | |
d2e4a39e | 8249 | static int |
4c4b4cd2 | 8250 | variant_field_index (struct type *type) |
14f9c5c9 AS |
8251 | { |
8252 | int f; | |
8253 | ||
4c4b4cd2 PH |
8254 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
8255 | return -1; | |
8256 | ||
8257 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
8258 | { | |
8259 | if (ada_is_variant_part (type, f)) | |
8260 | return f; | |
8261 | } | |
8262 | return -1; | |
14f9c5c9 AS |
8263 | } |
8264 | ||
4c4b4cd2 PH |
8265 | /* A record type with no fields. */ |
8266 | ||
d2e4a39e | 8267 | static struct type * |
fe978cb0 | 8268 | empty_record (struct type *templ) |
14f9c5c9 | 8269 | { |
fe978cb0 | 8270 | struct type *type = alloc_type_copy (templ); |
5b4ee69b | 8271 | |
14f9c5c9 AS |
8272 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
8273 | TYPE_NFIELDS (type) = 0; | |
8274 | TYPE_FIELDS (type) = NULL; | |
8ecb59f8 | 8275 | INIT_NONE_SPECIFIC (type); |
14f9c5c9 | 8276 | TYPE_NAME (type) = "<empty>"; |
14f9c5c9 AS |
8277 | TYPE_LENGTH (type) = 0; |
8278 | return type; | |
8279 | } | |
8280 | ||
8281 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
8282 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
8283 | the beginning of this section) VAL according to GNAT conventions. | |
8284 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 8285 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
8286 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
8287 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 8288 | of the variant. |
14f9c5c9 | 8289 | |
4c4b4cd2 PH |
8290 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
8291 | length are not statically known are discarded. As a consequence, | |
8292 | VALADDR, ADDRESS and DVAL0 are ignored. | |
8293 | ||
8294 | NOTE: Limitations: For now, we assume that dynamic fields and | |
8295 | variants occupy whole numbers of bytes. However, they need not be | |
8296 | byte-aligned. */ | |
8297 | ||
8298 | struct type * | |
10a2c479 | 8299 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 8300 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
8301 | CORE_ADDR address, struct value *dval0, |
8302 | int keep_dynamic_fields) | |
14f9c5c9 | 8303 | { |
d2e4a39e AS |
8304 | struct value *mark = value_mark (); |
8305 | struct value *dval; | |
8306 | struct type *rtype; | |
14f9c5c9 | 8307 | int nfields, bit_len; |
4c4b4cd2 | 8308 | int variant_field; |
14f9c5c9 | 8309 | long off; |
d94e4f4f | 8310 | int fld_bit_len; |
14f9c5c9 AS |
8311 | int f; |
8312 | ||
4c4b4cd2 PH |
8313 | /* Compute the number of fields in this record type that are going |
8314 | to be processed: unless keep_dynamic_fields, this includes only | |
8315 | fields whose position and length are static will be processed. */ | |
8316 | if (keep_dynamic_fields) | |
8317 | nfields = TYPE_NFIELDS (type); | |
8318 | else | |
8319 | { | |
8320 | nfields = 0; | |
76a01679 | 8321 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
8322 | && !ada_is_variant_part (type, nfields) |
8323 | && !is_dynamic_field (type, nfields)) | |
8324 | nfields++; | |
8325 | } | |
8326 | ||
e9bb382b | 8327 | rtype = alloc_type_copy (type); |
14f9c5c9 | 8328 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
8ecb59f8 | 8329 | INIT_NONE_SPECIFIC (rtype); |
14f9c5c9 | 8330 | TYPE_NFIELDS (rtype) = nfields; |
d2e4a39e | 8331 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
8332 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
8333 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
8334 | TYPE_NAME (rtype) = ada_type_name (type); | |
876cecd0 | 8335 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 | 8336 | |
d2e4a39e AS |
8337 | off = 0; |
8338 | bit_len = 0; | |
4c4b4cd2 PH |
8339 | variant_field = -1; |
8340 | ||
14f9c5c9 AS |
8341 | for (f = 0; f < nfields; f += 1) |
8342 | { | |
6c038f32 PH |
8343 | off = align_value (off, field_alignment (type, f)) |
8344 | + TYPE_FIELD_BITPOS (type, f); | |
945b3a32 | 8345 | SET_FIELD_BITPOS (TYPE_FIELD (rtype, f), off); |
d2e4a39e | 8346 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 8347 | |
d2e4a39e | 8348 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
8349 | { |
8350 | variant_field = f; | |
d94e4f4f | 8351 | fld_bit_len = 0; |
4c4b4cd2 | 8352 | } |
14f9c5c9 | 8353 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 | 8354 | { |
284614f0 JB |
8355 | const gdb_byte *field_valaddr = valaddr; |
8356 | CORE_ADDR field_address = address; | |
8357 | struct type *field_type = | |
8358 | TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f)); | |
8359 | ||
4c4b4cd2 | 8360 | if (dval0 == NULL) |
b5304971 JG |
8361 | { |
8362 | /* rtype's length is computed based on the run-time | |
8363 | value of discriminants. If the discriminants are not | |
8364 | initialized, the type size may be completely bogus and | |
0963b4bd | 8365 | GDB may fail to allocate a value for it. So check the |
b5304971 | 8366 | size first before creating the value. */ |
c1b5a1a6 | 8367 | ada_ensure_varsize_limit (rtype); |
012370f6 TT |
8368 | /* Using plain value_from_contents_and_address here |
8369 | causes problems because we will end up trying to | |
8370 | resolve a type that is currently being | |
8371 | constructed. */ | |
8372 | dval = value_from_contents_and_address_unresolved (rtype, | |
8373 | valaddr, | |
8374 | address); | |
9f1f738a | 8375 | rtype = value_type (dval); |
b5304971 | 8376 | } |
4c4b4cd2 PH |
8377 | else |
8378 | dval = dval0; | |
8379 | ||
284614f0 JB |
8380 | /* If the type referenced by this field is an aligner type, we need |
8381 | to unwrap that aligner type, because its size might not be set. | |
8382 | Keeping the aligner type would cause us to compute the wrong | |
8383 | size for this field, impacting the offset of the all the fields | |
8384 | that follow this one. */ | |
8385 | if (ada_is_aligner_type (field_type)) | |
8386 | { | |
8387 | long field_offset = TYPE_FIELD_BITPOS (field_type, f); | |
8388 | ||
8389 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
8390 | field_address = cond_offset_target (field_address, field_offset); | |
8391 | field_type = ada_aligned_type (field_type); | |
8392 | } | |
8393 | ||
8394 | field_valaddr = cond_offset_host (field_valaddr, | |
8395 | off / TARGET_CHAR_BIT); | |
8396 | field_address = cond_offset_target (field_address, | |
8397 | off / TARGET_CHAR_BIT); | |
8398 | ||
8399 | /* Get the fixed type of the field. Note that, in this case, | |
8400 | we do not want to get the real type out of the tag: if | |
8401 | the current field is the parent part of a tagged record, | |
8402 | we will get the tag of the object. Clearly wrong: the real | |
8403 | type of the parent is not the real type of the child. We | |
8404 | would end up in an infinite loop. */ | |
8405 | field_type = ada_get_base_type (field_type); | |
8406 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
8407 | field_address, dval, 0); | |
27f2a97b JB |
8408 | /* If the field size is already larger than the maximum |
8409 | object size, then the record itself will necessarily | |
8410 | be larger than the maximum object size. We need to make | |
8411 | this check now, because the size might be so ridiculously | |
8412 | large (due to an uninitialized variable in the inferior) | |
8413 | that it would cause an overflow when adding it to the | |
8414 | record size. */ | |
c1b5a1a6 | 8415 | ada_ensure_varsize_limit (field_type); |
284614f0 JB |
8416 | |
8417 | TYPE_FIELD_TYPE (rtype, f) = field_type; | |
4c4b4cd2 | 8418 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
27f2a97b JB |
8419 | /* The multiplication can potentially overflow. But because |
8420 | the field length has been size-checked just above, and | |
8421 | assuming that the maximum size is a reasonable value, | |
8422 | an overflow should not happen in practice. So rather than | |
8423 | adding overflow recovery code to this already complex code, | |
8424 | we just assume that it's not going to happen. */ | |
d94e4f4f | 8425 | fld_bit_len = |
4c4b4cd2 PH |
8426 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; |
8427 | } | |
14f9c5c9 | 8428 | else |
4c4b4cd2 | 8429 | { |
5ded5331 JB |
8430 | /* Note: If this field's type is a typedef, it is important |
8431 | to preserve the typedef layer. | |
8432 | ||
8433 | Otherwise, we might be transforming a typedef to a fat | |
8434 | pointer (encoding a pointer to an unconstrained array), | |
8435 | into a basic fat pointer (encoding an unconstrained | |
8436 | array). As both types are implemented using the same | |
8437 | structure, the typedef is the only clue which allows us | |
8438 | to distinguish between the two options. Stripping it | |
8439 | would prevent us from printing this field appropriately. */ | |
8440 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
4c4b4cd2 PH |
8441 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
8442 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
d94e4f4f | 8443 | fld_bit_len = |
4c4b4cd2 PH |
8444 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); |
8445 | else | |
5ded5331 JB |
8446 | { |
8447 | struct type *field_type = TYPE_FIELD_TYPE (type, f); | |
8448 | ||
8449 | /* We need to be careful of typedefs when computing | |
8450 | the length of our field. If this is a typedef, | |
8451 | get the length of the target type, not the length | |
8452 | of the typedef. */ | |
8453 | if (TYPE_CODE (field_type) == TYPE_CODE_TYPEDEF) | |
8454 | field_type = ada_typedef_target_type (field_type); | |
8455 | ||
8456 | fld_bit_len = | |
8457 | TYPE_LENGTH (ada_check_typedef (field_type)) * TARGET_CHAR_BIT; | |
8458 | } | |
4c4b4cd2 | 8459 | } |
14f9c5c9 | 8460 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 8461 | bit_len = off + fld_bit_len; |
d94e4f4f | 8462 | off += fld_bit_len; |
4c4b4cd2 PH |
8463 | TYPE_LENGTH (rtype) = |
8464 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 8465 | } |
4c4b4cd2 PH |
8466 | |
8467 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 8468 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
8469 | the record. This can happen in the presence of representation |
8470 | clauses. */ | |
8471 | if (variant_field >= 0) | |
8472 | { | |
8473 | struct type *branch_type; | |
8474 | ||
8475 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
8476 | ||
8477 | if (dval0 == NULL) | |
9f1f738a | 8478 | { |
012370f6 TT |
8479 | /* Using plain value_from_contents_and_address here causes |
8480 | problems because we will end up trying to resolve a type | |
8481 | that is currently being constructed. */ | |
8482 | dval = value_from_contents_and_address_unresolved (rtype, valaddr, | |
8483 | address); | |
9f1f738a SA |
8484 | rtype = value_type (dval); |
8485 | } | |
4c4b4cd2 PH |
8486 | else |
8487 | dval = dval0; | |
8488 | ||
8489 | branch_type = | |
8490 | to_fixed_variant_branch_type | |
8491 | (TYPE_FIELD_TYPE (type, variant_field), | |
8492 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
8493 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
8494 | if (branch_type == NULL) | |
8495 | { | |
8496 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
8497 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
8498 | TYPE_NFIELDS (rtype) -= 1; | |
8499 | } | |
8500 | else | |
8501 | { | |
8502 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
8503 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
8504 | fld_bit_len = | |
8505 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
8506 | TARGET_CHAR_BIT; | |
8507 | if (off + fld_bit_len > bit_len) | |
8508 | bit_len = off + fld_bit_len; | |
8509 | TYPE_LENGTH (rtype) = | |
8510 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
8511 | } | |
8512 | } | |
8513 | ||
714e53ab PH |
8514 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
8515 | should contain the alignment of that record, which should be a strictly | |
8516 | positive value. If null or negative, then something is wrong, most | |
8517 | probably in the debug info. In that case, we don't round up the size | |
0963b4bd | 8518 | of the resulting type. If this record is not part of another structure, |
714e53ab PH |
8519 | the current RTYPE length might be good enough for our purposes. */ |
8520 | if (TYPE_LENGTH (type) <= 0) | |
8521 | { | |
323e0a4a | 8522 | if (TYPE_NAME (rtype)) |
cc1defb1 KS |
8523 | warning (_("Invalid type size for `%s' detected: %s."), |
8524 | TYPE_NAME (rtype), pulongest (TYPE_LENGTH (type))); | |
323e0a4a | 8525 | else |
cc1defb1 KS |
8526 | warning (_("Invalid type size for <unnamed> detected: %s."), |
8527 | pulongest (TYPE_LENGTH (type))); | |
714e53ab PH |
8528 | } |
8529 | else | |
8530 | { | |
8531 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
8532 | TYPE_LENGTH (type)); | |
8533 | } | |
14f9c5c9 AS |
8534 | |
8535 | value_free_to_mark (mark); | |
d2e4a39e | 8536 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 8537 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
8538 | return rtype; |
8539 | } | |
8540 | ||
4c4b4cd2 PH |
8541 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
8542 | of 1. */ | |
14f9c5c9 | 8543 | |
d2e4a39e | 8544 | static struct type * |
fc1a4b47 | 8545 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
8546 | CORE_ADDR address, struct value *dval0) |
8547 | { | |
8548 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
8549 | address, dval0, 1); | |
8550 | } | |
8551 | ||
8552 | /* An ordinary record type in which ___XVL-convention fields and | |
8553 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
8554 | static approximations, containing all possible fields. Uses | |
8555 | no runtime values. Useless for use in values, but that's OK, | |
8556 | since the results are used only for type determinations. Works on both | |
8557 | structs and unions. Representation note: to save space, we memorize | |
8558 | the result of this function in the TYPE_TARGET_TYPE of the | |
8559 | template type. */ | |
8560 | ||
8561 | static struct type * | |
8562 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
8563 | { |
8564 | struct type *type; | |
8565 | int nfields; | |
8566 | int f; | |
8567 | ||
9e195661 PMR |
8568 | /* No need no do anything if the input type is already fixed. */ |
8569 | if (TYPE_FIXED_INSTANCE (type0)) | |
8570 | return type0; | |
8571 | ||
8572 | /* Likewise if we already have computed the static approximation. */ | |
4c4b4cd2 PH |
8573 | if (TYPE_TARGET_TYPE (type0) != NULL) |
8574 | return TYPE_TARGET_TYPE (type0); | |
8575 | ||
9e195661 | 8576 | /* Don't clone TYPE0 until we are sure we are going to need a copy. */ |
4c4b4cd2 | 8577 | type = type0; |
9e195661 PMR |
8578 | nfields = TYPE_NFIELDS (type0); |
8579 | ||
8580 | /* Whether or not we cloned TYPE0, cache the result so that we don't do | |
8581 | recompute all over next time. */ | |
8582 | TYPE_TARGET_TYPE (type0) = type; | |
14f9c5c9 AS |
8583 | |
8584 | for (f = 0; f < nfields; f += 1) | |
8585 | { | |
460efde1 | 8586 | struct type *field_type = TYPE_FIELD_TYPE (type0, f); |
4c4b4cd2 | 8587 | struct type *new_type; |
14f9c5c9 | 8588 | |
4c4b4cd2 | 8589 | if (is_dynamic_field (type0, f)) |
460efde1 JB |
8590 | { |
8591 | field_type = ada_check_typedef (field_type); | |
8592 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
8593 | } | |
14f9c5c9 | 8594 | else |
f192137b | 8595 | new_type = static_unwrap_type (field_type); |
9e195661 PMR |
8596 | |
8597 | if (new_type != field_type) | |
8598 | { | |
8599 | /* Clone TYPE0 only the first time we get a new field type. */ | |
8600 | if (type == type0) | |
8601 | { | |
8602 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); | |
8603 | TYPE_CODE (type) = TYPE_CODE (type0); | |
8ecb59f8 | 8604 | INIT_NONE_SPECIFIC (type); |
9e195661 PMR |
8605 | TYPE_NFIELDS (type) = nfields; |
8606 | TYPE_FIELDS (type) = (struct field *) | |
8607 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
8608 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
8609 | sizeof (struct field) * nfields); | |
8610 | TYPE_NAME (type) = ada_type_name (type0); | |
9e195661 PMR |
8611 | TYPE_FIXED_INSTANCE (type) = 1; |
8612 | TYPE_LENGTH (type) = 0; | |
8613 | } | |
8614 | TYPE_FIELD_TYPE (type, f) = new_type; | |
8615 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
8616 | } | |
14f9c5c9 | 8617 | } |
9e195661 | 8618 | |
14f9c5c9 AS |
8619 | return type; |
8620 | } | |
8621 | ||
4c4b4cd2 | 8622 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
8623 | whose address in memory is ADDRESS, returns a revision of TYPE, |
8624 | which should be a non-dynamic-sized record, in which the variant | |
8625 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
8626 | for discriminant values in DVAL0, which can be NULL if the record |
8627 | contains the necessary discriminant values. */ | |
8628 | ||
d2e4a39e | 8629 | static struct type * |
fc1a4b47 | 8630 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 8631 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 8632 | { |
d2e4a39e | 8633 | struct value *mark = value_mark (); |
4c4b4cd2 | 8634 | struct value *dval; |
d2e4a39e | 8635 | struct type *rtype; |
14f9c5c9 AS |
8636 | struct type *branch_type; |
8637 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 8638 | int variant_field = variant_field_index (type); |
14f9c5c9 | 8639 | |
4c4b4cd2 | 8640 | if (variant_field == -1) |
14f9c5c9 AS |
8641 | return type; |
8642 | ||
4c4b4cd2 | 8643 | if (dval0 == NULL) |
9f1f738a SA |
8644 | { |
8645 | dval = value_from_contents_and_address (type, valaddr, address); | |
8646 | type = value_type (dval); | |
8647 | } | |
4c4b4cd2 PH |
8648 | else |
8649 | dval = dval0; | |
8650 | ||
e9bb382b | 8651 | rtype = alloc_type_copy (type); |
14f9c5c9 | 8652 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
8ecb59f8 | 8653 | INIT_NONE_SPECIFIC (rtype); |
4c4b4cd2 | 8654 | TYPE_NFIELDS (rtype) = nfields; |
d2e4a39e AS |
8655 | TYPE_FIELDS (rtype) = |
8656 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
8657 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 8658 | sizeof (struct field) * nfields); |
14f9c5c9 | 8659 | TYPE_NAME (rtype) = ada_type_name (type); |
876cecd0 | 8660 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 AS |
8661 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
8662 | ||
4c4b4cd2 PH |
8663 | branch_type = to_fixed_variant_branch_type |
8664 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 8665 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
8666 | TYPE_FIELD_BITPOS (type, variant_field) |
8667 | / TARGET_CHAR_BIT), | |
d2e4a39e | 8668 | cond_offset_target (address, |
4c4b4cd2 PH |
8669 | TYPE_FIELD_BITPOS (type, variant_field) |
8670 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 8671 | if (branch_type == NULL) |
14f9c5c9 | 8672 | { |
4c4b4cd2 | 8673 | int f; |
5b4ee69b | 8674 | |
4c4b4cd2 PH |
8675 | for (f = variant_field + 1; f < nfields; f += 1) |
8676 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 8677 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
8678 | } |
8679 | else | |
8680 | { | |
4c4b4cd2 PH |
8681 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
8682 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
8683 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 8684 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 8685 | } |
4c4b4cd2 | 8686 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 8687 | |
4c4b4cd2 | 8688 | value_free_to_mark (mark); |
14f9c5c9 AS |
8689 | return rtype; |
8690 | } | |
8691 | ||
8692 | /* An ordinary record type (with fixed-length fields) that describes | |
8693 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
8694 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
8695 | should be in DVAL, a record value; it may be NULL if the object |
8696 | at ADDR itself contains any necessary discriminant values. | |
8697 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
8698 | values from the record are needed. Except in the case that DVAL, | |
8699 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
8700 | unchecked) is replaced by a particular branch of the variant. | |
8701 | ||
8702 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
8703 | is questionable and may be removed. It can arise during the | |
8704 | processing of an unconstrained-array-of-record type where all the | |
8705 | variant branches have exactly the same size. This is because in | |
8706 | such cases, the compiler does not bother to use the XVS convention | |
8707 | when encoding the record. I am currently dubious of this | |
8708 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 8709 | |
d2e4a39e | 8710 | static struct type * |
fc1a4b47 | 8711 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 8712 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 8713 | { |
d2e4a39e | 8714 | struct type *templ_type; |
14f9c5c9 | 8715 | |
876cecd0 | 8716 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
8717 | return type0; |
8718 | ||
d2e4a39e | 8719 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
8720 | |
8721 | if (templ_type != NULL) | |
8722 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
8723 | else if (variant_field_index (type0) >= 0) |
8724 | { | |
8725 | if (dval == NULL && valaddr == NULL && address == 0) | |
8726 | return type0; | |
8727 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
8728 | dval); | |
8729 | } | |
14f9c5c9 AS |
8730 | else |
8731 | { | |
876cecd0 | 8732 | TYPE_FIXED_INSTANCE (type0) = 1; |
14f9c5c9 AS |
8733 | return type0; |
8734 | } | |
8735 | ||
8736 | } | |
8737 | ||
8738 | /* An ordinary record type (with fixed-length fields) that describes | |
8739 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
8740 | union type. Any necessary discriminants' values should be in DVAL, | |
8741 | a record value. That is, this routine selects the appropriate | |
8742 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd | 8743 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
0963b4bd | 8744 | it represents a variant subject to a pragma Unchecked_Union. */ |
14f9c5c9 | 8745 | |
d2e4a39e | 8746 | static struct type * |
fc1a4b47 | 8747 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 8748 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
8749 | { |
8750 | int which; | |
d2e4a39e AS |
8751 | struct type *templ_type; |
8752 | struct type *var_type; | |
14f9c5c9 AS |
8753 | |
8754 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
8755 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 8756 | else |
14f9c5c9 AS |
8757 | var_type = var_type0; |
8758 | ||
8759 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
8760 | ||
8761 | if (templ_type != NULL) | |
8762 | var_type = templ_type; | |
8763 | ||
b1f33ddd JB |
8764 | if (is_unchecked_variant (var_type, value_type (dval))) |
8765 | return var_type0; | |
d2e4a39e AS |
8766 | which = |
8767 | ada_which_variant_applies (var_type, | |
0fd88904 | 8768 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
8769 | |
8770 | if (which < 0) | |
e9bb382b | 8771 | return empty_record (var_type); |
14f9c5c9 | 8772 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 8773 | return to_fixed_record_type |
d2e4a39e AS |
8774 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
8775 | valaddr, address, dval); | |
4c4b4cd2 | 8776 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
8777 | return |
8778 | to_fixed_record_type | |
8779 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
8780 | else |
8781 | return TYPE_FIELD_TYPE (var_type, which); | |
8782 | } | |
8783 | ||
8908fca5 JB |
8784 | /* Assuming RANGE_TYPE is a TYPE_CODE_RANGE, return nonzero if |
8785 | ENCODING_TYPE, a type following the GNAT conventions for discrete | |
8786 | type encodings, only carries redundant information. */ | |
8787 | ||
8788 | static int | |
8789 | ada_is_redundant_range_encoding (struct type *range_type, | |
8790 | struct type *encoding_type) | |
8791 | { | |
108d56a4 | 8792 | const char *bounds_str; |
8908fca5 JB |
8793 | int n; |
8794 | LONGEST lo, hi; | |
8795 | ||
8796 | gdb_assert (TYPE_CODE (range_type) == TYPE_CODE_RANGE); | |
8797 | ||
005e2509 JB |
8798 | if (TYPE_CODE (get_base_type (range_type)) |
8799 | != TYPE_CODE (get_base_type (encoding_type))) | |
8800 | { | |
8801 | /* The compiler probably used a simple base type to describe | |
8802 | the range type instead of the range's actual base type, | |
8803 | expecting us to get the real base type from the encoding | |
8804 | anyway. In this situation, the encoding cannot be ignored | |
8805 | as redundant. */ | |
8806 | return 0; | |
8807 | } | |
8808 | ||
8908fca5 JB |
8809 | if (is_dynamic_type (range_type)) |
8810 | return 0; | |
8811 | ||
8812 | if (TYPE_NAME (encoding_type) == NULL) | |
8813 | return 0; | |
8814 | ||
8815 | bounds_str = strstr (TYPE_NAME (encoding_type), "___XDLU_"); | |
8816 | if (bounds_str == NULL) | |
8817 | return 0; | |
8818 | ||
8819 | n = 8; /* Skip "___XDLU_". */ | |
8820 | if (!ada_scan_number (bounds_str, n, &lo, &n)) | |
8821 | return 0; | |
8822 | if (TYPE_LOW_BOUND (range_type) != lo) | |
8823 | return 0; | |
8824 | ||
8825 | n += 2; /* Skip the "__" separator between the two bounds. */ | |
8826 | if (!ada_scan_number (bounds_str, n, &hi, &n)) | |
8827 | return 0; | |
8828 | if (TYPE_HIGH_BOUND (range_type) != hi) | |
8829 | return 0; | |
8830 | ||
8831 | return 1; | |
8832 | } | |
8833 | ||
8834 | /* Given the array type ARRAY_TYPE, return nonzero if DESC_TYPE, | |
8835 | a type following the GNAT encoding for describing array type | |
8836 | indices, only carries redundant information. */ | |
8837 | ||
8838 | static int | |
8839 | ada_is_redundant_index_type_desc (struct type *array_type, | |
8840 | struct type *desc_type) | |
8841 | { | |
8842 | struct type *this_layer = check_typedef (array_type); | |
8843 | int i; | |
8844 | ||
8845 | for (i = 0; i < TYPE_NFIELDS (desc_type); i++) | |
8846 | { | |
8847 | if (!ada_is_redundant_range_encoding (TYPE_INDEX_TYPE (this_layer), | |
8848 | TYPE_FIELD_TYPE (desc_type, i))) | |
8849 | return 0; | |
8850 | this_layer = check_typedef (TYPE_TARGET_TYPE (this_layer)); | |
8851 | } | |
8852 | ||
8853 | return 1; | |
8854 | } | |
8855 | ||
14f9c5c9 AS |
8856 | /* Assuming that TYPE0 is an array type describing the type of a value |
8857 | at ADDR, and that DVAL describes a record containing any | |
8858 | discriminants used in TYPE0, returns a type for the value that | |
8859 | contains no dynamic components (that is, no components whose sizes | |
8860 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
8861 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 8862 | varsize_limit. */ |
14f9c5c9 | 8863 | |
d2e4a39e AS |
8864 | static struct type * |
8865 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 8866 | int ignore_too_big) |
14f9c5c9 | 8867 | { |
d2e4a39e AS |
8868 | struct type *index_type_desc; |
8869 | struct type *result; | |
ad82864c | 8870 | int constrained_packed_array_p; |
931e5bc3 | 8871 | static const char *xa_suffix = "___XA"; |
14f9c5c9 | 8872 | |
b0dd7688 | 8873 | type0 = ada_check_typedef (type0); |
284614f0 | 8874 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 | 8875 | return type0; |
14f9c5c9 | 8876 | |
ad82864c JB |
8877 | constrained_packed_array_p = ada_is_constrained_packed_array_type (type0); |
8878 | if (constrained_packed_array_p) | |
8879 | type0 = decode_constrained_packed_array_type (type0); | |
284614f0 | 8880 | |
931e5bc3 JG |
8881 | index_type_desc = ada_find_parallel_type (type0, xa_suffix); |
8882 | ||
8883 | /* As mentioned in exp_dbug.ads, for non bit-packed arrays an | |
8884 | encoding suffixed with 'P' may still be generated. If so, | |
8885 | it should be used to find the XA type. */ | |
8886 | ||
8887 | if (index_type_desc == NULL) | |
8888 | { | |
1da0522e | 8889 | const char *type_name = ada_type_name (type0); |
931e5bc3 | 8890 | |
1da0522e | 8891 | if (type_name != NULL) |
931e5bc3 | 8892 | { |
1da0522e | 8893 | const int len = strlen (type_name); |
931e5bc3 JG |
8894 | char *name = (char *) alloca (len + strlen (xa_suffix)); |
8895 | ||
1da0522e | 8896 | if (type_name[len - 1] == 'P') |
931e5bc3 | 8897 | { |
1da0522e | 8898 | strcpy (name, type_name); |
931e5bc3 JG |
8899 | strcpy (name + len - 1, xa_suffix); |
8900 | index_type_desc = ada_find_parallel_type_with_name (type0, name); | |
8901 | } | |
8902 | } | |
8903 | } | |
8904 | ||
28c85d6c | 8905 | ada_fixup_array_indexes_type (index_type_desc); |
8908fca5 JB |
8906 | if (index_type_desc != NULL |
8907 | && ada_is_redundant_index_type_desc (type0, index_type_desc)) | |
8908 | { | |
8909 | /* Ignore this ___XA parallel type, as it does not bring any | |
8910 | useful information. This allows us to avoid creating fixed | |
8911 | versions of the array's index types, which would be identical | |
8912 | to the original ones. This, in turn, can also help avoid | |
8913 | the creation of fixed versions of the array itself. */ | |
8914 | index_type_desc = NULL; | |
8915 | } | |
8916 | ||
14f9c5c9 AS |
8917 | if (index_type_desc == NULL) |
8918 | { | |
61ee279c | 8919 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
5b4ee69b | 8920 | |
14f9c5c9 | 8921 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
8922 | depend on the contents of the array in properly constructed |
8923 | debugging data. */ | |
529cad9c PH |
8924 | /* Create a fixed version of the array element type. |
8925 | We're not providing the address of an element here, | |
e1d5a0d2 | 8926 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
8927 | the conversion. This should not be a problem, since arrays of |
8928 | unconstrained objects are not allowed. In particular, all | |
8929 | the elements of an array of a tagged type should all be of | |
8930 | the same type specified in the debugging info. No need to | |
8931 | consult the object tag. */ | |
1ed6ede0 | 8932 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 8933 | |
284614f0 JB |
8934 | /* Make sure we always create a new array type when dealing with |
8935 | packed array types, since we're going to fix-up the array | |
8936 | type length and element bitsize a little further down. */ | |
ad82864c | 8937 | if (elt_type0 == elt_type && !constrained_packed_array_p) |
4c4b4cd2 | 8938 | result = type0; |
14f9c5c9 | 8939 | else |
e9bb382b | 8940 | result = create_array_type (alloc_type_copy (type0), |
4c4b4cd2 | 8941 | elt_type, TYPE_INDEX_TYPE (type0)); |
14f9c5c9 AS |
8942 | } |
8943 | else | |
8944 | { | |
8945 | int i; | |
8946 | struct type *elt_type0; | |
8947 | ||
8948 | elt_type0 = type0; | |
8949 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 8950 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
8951 | |
8952 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
8953 | depend on the contents of the array in properly constructed |
8954 | debugging data. */ | |
529cad9c PH |
8955 | /* Create a fixed version of the array element type. |
8956 | We're not providing the address of an element here, | |
e1d5a0d2 | 8957 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
8958 | the conversion. This should not be a problem, since arrays of |
8959 | unconstrained objects are not allowed. In particular, all | |
8960 | the elements of an array of a tagged type should all be of | |
8961 | the same type specified in the debugging info. No need to | |
8962 | consult the object tag. */ | |
1ed6ede0 JB |
8963 | result = |
8964 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
1ce677a4 UW |
8965 | |
8966 | elt_type0 = type0; | |
14f9c5c9 | 8967 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
8968 | { |
8969 | struct type *range_type = | |
28c85d6c | 8970 | to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, i), dval); |
5b4ee69b | 8971 | |
e9bb382b | 8972 | result = create_array_type (alloc_type_copy (elt_type0), |
4c4b4cd2 | 8973 | result, range_type); |
1ce677a4 | 8974 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
4c4b4cd2 | 8975 | } |
d2e4a39e | 8976 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 8977 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
8978 | } |
8979 | ||
2e6fda7d JB |
8980 | /* We want to preserve the type name. This can be useful when |
8981 | trying to get the type name of a value that has already been | |
8982 | printed (for instance, if the user did "print VAR; whatis $". */ | |
8983 | TYPE_NAME (result) = TYPE_NAME (type0); | |
8984 | ||
ad82864c | 8985 | if (constrained_packed_array_p) |
284614f0 JB |
8986 | { |
8987 | /* So far, the resulting type has been created as if the original | |
8988 | type was a regular (non-packed) array type. As a result, the | |
8989 | bitsize of the array elements needs to be set again, and the array | |
8990 | length needs to be recomputed based on that bitsize. */ | |
8991 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
8992 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
8993 | ||
8994 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
8995 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
8996 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
8997 | TYPE_LENGTH (result)++; | |
8998 | } | |
8999 | ||
876cecd0 | 9000 | TYPE_FIXED_INSTANCE (result) = 1; |
14f9c5c9 | 9001 | return result; |
d2e4a39e | 9002 | } |
14f9c5c9 AS |
9003 | |
9004 | ||
9005 | /* A standard type (containing no dynamically sized components) | |
9006 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
9007 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 9008 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
9009 | ADDRESS or in VALADDR contains these discriminants. |
9010 | ||
1ed6ede0 JB |
9011 | If CHECK_TAG is not null, in the case of tagged types, this function |
9012 | attempts to locate the object's tag and use it to compute the actual | |
9013 | type. However, when ADDRESS is null, we cannot use it to determine the | |
9014 | location of the tag, and therefore compute the tagged type's actual type. | |
9015 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 9016 | |
f192137b JB |
9017 | static struct type * |
9018 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 9019 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 9020 | { |
61ee279c | 9021 | type = ada_check_typedef (type); |
8ecb59f8 TT |
9022 | |
9023 | /* Only un-fixed types need to be handled here. */ | |
9024 | if (!HAVE_GNAT_AUX_INFO (type)) | |
9025 | return type; | |
9026 | ||
d2e4a39e AS |
9027 | switch (TYPE_CODE (type)) |
9028 | { | |
9029 | default: | |
14f9c5c9 | 9030 | return type; |
d2e4a39e | 9031 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 9032 | { |
76a01679 | 9033 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
9034 | struct type *fixed_record_type = |
9035 | to_fixed_record_type (type, valaddr, address, NULL); | |
5b4ee69b | 9036 | |
529cad9c PH |
9037 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
9038 | then we can determine its tag, and compute the object's actual | |
0963b4bd | 9039 | type from there. Note that we have to use the fixed record |
1ed6ede0 JB |
9040 | type (the parent part of the record may have dynamic fields |
9041 | and the way the location of _tag is expressed may depend on | |
9042 | them). */ | |
529cad9c | 9043 | |
1ed6ede0 | 9044 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 | 9045 | { |
b50d69b5 JG |
9046 | struct value *tag = |
9047 | value_tag_from_contents_and_address | |
9048 | (fixed_record_type, | |
9049 | valaddr, | |
9050 | address); | |
9051 | struct type *real_type = type_from_tag (tag); | |
9052 | struct value *obj = | |
9053 | value_from_contents_and_address (fixed_record_type, | |
9054 | valaddr, | |
9055 | address); | |
9f1f738a | 9056 | fixed_record_type = value_type (obj); |
76a01679 | 9057 | if (real_type != NULL) |
b50d69b5 JG |
9058 | return to_fixed_record_type |
9059 | (real_type, NULL, | |
9060 | value_address (ada_tag_value_at_base_address (obj)), NULL); | |
76a01679 | 9061 | } |
4af88198 JB |
9062 | |
9063 | /* Check to see if there is a parallel ___XVZ variable. | |
9064 | If there is, then it provides the actual size of our type. */ | |
9065 | else if (ada_type_name (fixed_record_type) != NULL) | |
9066 | { | |
0d5cff50 | 9067 | const char *name = ada_type_name (fixed_record_type); |
224c3ddb SM |
9068 | char *xvz_name |
9069 | = (char *) alloca (strlen (name) + 7 /* "___XVZ\0" */); | |
eccab96d | 9070 | bool xvz_found = false; |
4af88198 JB |
9071 | LONGEST size; |
9072 | ||
88c15c34 | 9073 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
a70b8144 | 9074 | try |
eccab96d JB |
9075 | { |
9076 | xvz_found = get_int_var_value (xvz_name, size); | |
9077 | } | |
230d2906 | 9078 | catch (const gdb_exception_error &except) |
eccab96d JB |
9079 | { |
9080 | /* We found the variable, but somehow failed to read | |
9081 | its value. Rethrow the same error, but with a little | |
9082 | bit more information, to help the user understand | |
9083 | what went wrong (Eg: the variable might have been | |
9084 | optimized out). */ | |
9085 | throw_error (except.error, | |
9086 | _("unable to read value of %s (%s)"), | |
3d6e9d23 | 9087 | xvz_name, except.what ()); |
eccab96d | 9088 | } |
eccab96d JB |
9089 | |
9090 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) | |
4af88198 JB |
9091 | { |
9092 | fixed_record_type = copy_type (fixed_record_type); | |
9093 | TYPE_LENGTH (fixed_record_type) = size; | |
9094 | ||
9095 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
9096 | observed this when the debugging info is STABS, and | |
9097 | apparently it is something that is hard to fix. | |
9098 | ||
9099 | In practice, we don't need the actual type definition | |
9100 | at all, because the presence of the XVZ variable allows us | |
9101 | to assume that there must be a XVS type as well, which we | |
9102 | should be able to use later, when we need the actual type | |
9103 | definition. | |
9104 | ||
9105 | In the meantime, pretend that the "fixed" type we are | |
9106 | returning is NOT a stub, because this can cause trouble | |
9107 | when using this type to create new types targeting it. | |
9108 | Indeed, the associated creation routines often check | |
9109 | whether the target type is a stub and will try to replace | |
0963b4bd | 9110 | it, thus using a type with the wrong size. This, in turn, |
4af88198 JB |
9111 | might cause the new type to have the wrong size too. |
9112 | Consider the case of an array, for instance, where the size | |
9113 | of the array is computed from the number of elements in | |
9114 | our array multiplied by the size of its element. */ | |
9115 | TYPE_STUB (fixed_record_type) = 0; | |
9116 | } | |
9117 | } | |
1ed6ede0 | 9118 | return fixed_record_type; |
4c4b4cd2 | 9119 | } |
d2e4a39e | 9120 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 9121 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
9122 | case TYPE_CODE_UNION: |
9123 | if (dval == NULL) | |
4c4b4cd2 | 9124 | return type; |
d2e4a39e | 9125 | else |
4c4b4cd2 | 9126 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 9127 | } |
14f9c5c9 AS |
9128 | } |
9129 | ||
f192137b JB |
9130 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
9131 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
96dbd2c1 JB |
9132 | |
9133 | The typedef layer needs be preserved in order to differentiate between | |
9134 | arrays and array pointers when both types are implemented using the same | |
9135 | fat pointer. In the array pointer case, the pointer is encoded as | |
9136 | a typedef of the pointer type. For instance, considering: | |
9137 | ||
9138 | type String_Access is access String; | |
9139 | S1 : String_Access := null; | |
9140 | ||
9141 | To the debugger, S1 is defined as a typedef of type String. But | |
9142 | to the user, it is a pointer. So if the user tries to print S1, | |
9143 | we should not dereference the array, but print the array address | |
9144 | instead. | |
9145 | ||
9146 | If we didn't preserve the typedef layer, we would lose the fact that | |
9147 | the type is to be presented as a pointer (needs de-reference before | |
9148 | being printed). And we would also use the source-level type name. */ | |
f192137b JB |
9149 | |
9150 | struct type * | |
9151 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
9152 | CORE_ADDR address, struct value *dval, int check_tag) | |
9153 | ||
9154 | { | |
9155 | struct type *fixed_type = | |
9156 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
9157 | ||
96dbd2c1 JB |
9158 | /* If TYPE is a typedef and its target type is the same as the FIXED_TYPE, |
9159 | then preserve the typedef layer. | |
9160 | ||
9161 | Implementation note: We can only check the main-type portion of | |
9162 | the TYPE and FIXED_TYPE, because eliminating the typedef layer | |
9163 | from TYPE now returns a type that has the same instance flags | |
9164 | as TYPE. For instance, if TYPE is a "typedef const", and its | |
9165 | target type is a "struct", then the typedef elimination will return | |
9166 | a "const" version of the target type. See check_typedef for more | |
9167 | details about how the typedef layer elimination is done. | |
9168 | ||
9169 | brobecker/2010-11-19: It seems to me that the only case where it is | |
9170 | useful to preserve the typedef layer is when dealing with fat pointers. | |
9171 | Perhaps, we could add a check for that and preserve the typedef layer | |
9172 | only in that situation. But this seems unecessary so far, probably | |
9173 | because we call check_typedef/ada_check_typedef pretty much everywhere. | |
9174 | */ | |
f192137b | 9175 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF |
720d1a40 | 9176 | && (TYPE_MAIN_TYPE (ada_typedef_target_type (type)) |
96dbd2c1 | 9177 | == TYPE_MAIN_TYPE (fixed_type))) |
f192137b JB |
9178 | return type; |
9179 | ||
9180 | return fixed_type; | |
9181 | } | |
9182 | ||
14f9c5c9 | 9183 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 9184 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 9185 | |
d2e4a39e AS |
9186 | static struct type * |
9187 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 9188 | { |
d2e4a39e | 9189 | struct type *type; |
14f9c5c9 AS |
9190 | |
9191 | if (type0 == NULL) | |
9192 | return NULL; | |
9193 | ||
876cecd0 | 9194 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
9195 | return type0; |
9196 | ||
61ee279c | 9197 | type0 = ada_check_typedef (type0); |
d2e4a39e | 9198 | |
14f9c5c9 AS |
9199 | switch (TYPE_CODE (type0)) |
9200 | { | |
9201 | default: | |
9202 | return type0; | |
9203 | case TYPE_CODE_STRUCT: | |
9204 | type = dynamic_template_type (type0); | |
d2e4a39e | 9205 | if (type != NULL) |
4c4b4cd2 PH |
9206 | return template_to_static_fixed_type (type); |
9207 | else | |
9208 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
9209 | case TYPE_CODE_UNION: |
9210 | type = ada_find_parallel_type (type0, "___XVU"); | |
9211 | if (type != NULL) | |
4c4b4cd2 PH |
9212 | return template_to_static_fixed_type (type); |
9213 | else | |
9214 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
9215 | } |
9216 | } | |
9217 | ||
4c4b4cd2 PH |
9218 | /* A static approximation of TYPE with all type wrappers removed. */ |
9219 | ||
d2e4a39e AS |
9220 | static struct type * |
9221 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
9222 | { |
9223 | if (ada_is_aligner_type (type)) | |
9224 | { | |
61ee279c | 9225 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 9226 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 9227 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
9228 | |
9229 | return static_unwrap_type (type1); | |
9230 | } | |
d2e4a39e | 9231 | else |
14f9c5c9 | 9232 | { |
d2e4a39e | 9233 | struct type *raw_real_type = ada_get_base_type (type); |
5b4ee69b | 9234 | |
d2e4a39e | 9235 | if (raw_real_type == type) |
4c4b4cd2 | 9236 | return type; |
14f9c5c9 | 9237 | else |
4c4b4cd2 | 9238 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
9239 | } |
9240 | } | |
9241 | ||
9242 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 9243 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
9244 | type Foo; |
9245 | type FooP is access Foo; | |
9246 | V: FooP; | |
9247 | type Foo is array ...; | |
4c4b4cd2 | 9248 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
9249 | cross-references to such types, we instead substitute for FooP a |
9250 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 9251 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
9252 | |
9253 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
9254 | exists, otherwise TYPE. */ |
9255 | ||
d2e4a39e | 9256 | struct type * |
61ee279c | 9257 | ada_check_typedef (struct type *type) |
14f9c5c9 | 9258 | { |
727e3d2e JB |
9259 | if (type == NULL) |
9260 | return NULL; | |
9261 | ||
736ade86 XR |
9262 | /* If our type is an access to an unconstrained array, which is encoded |
9263 | as a TYPE_CODE_TYPEDEF of a fat pointer, then we're done. | |
720d1a40 JB |
9264 | We don't want to strip the TYPE_CODE_TYPDEF layer, because this is |
9265 | what allows us to distinguish between fat pointers that represent | |
9266 | array types, and fat pointers that represent array access types | |
9267 | (in both cases, the compiler implements them as fat pointers). */ | |
736ade86 | 9268 | if (ada_is_access_to_unconstrained_array (type)) |
720d1a40 JB |
9269 | return type; |
9270 | ||
f168693b | 9271 | type = check_typedef (type); |
14f9c5c9 | 9272 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
529cad9c | 9273 | || !TYPE_STUB (type) |
e86ca25f | 9274 | || TYPE_NAME (type) == NULL) |
14f9c5c9 | 9275 | return type; |
d2e4a39e | 9276 | else |
14f9c5c9 | 9277 | { |
e86ca25f | 9278 | const char *name = TYPE_NAME (type); |
d2e4a39e | 9279 | struct type *type1 = ada_find_any_type (name); |
5b4ee69b | 9280 | |
05e522ef JB |
9281 | if (type1 == NULL) |
9282 | return type; | |
9283 | ||
9284 | /* TYPE1 might itself be a TYPE_CODE_TYPEDEF (this can happen with | |
9285 | stubs pointing to arrays, as we don't create symbols for array | |
3a867c22 JB |
9286 | types, only for the typedef-to-array types). If that's the case, |
9287 | strip the typedef layer. */ | |
9288 | if (TYPE_CODE (type1) == TYPE_CODE_TYPEDEF) | |
9289 | type1 = ada_check_typedef (type1); | |
9290 | ||
9291 | return type1; | |
14f9c5c9 AS |
9292 | } |
9293 | } | |
9294 | ||
9295 | /* A value representing the data at VALADDR/ADDRESS as described by | |
9296 | type TYPE0, but with a standard (static-sized) type that correctly | |
9297 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
9298 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 9299 | creation of struct values]. */ |
14f9c5c9 | 9300 | |
4c4b4cd2 PH |
9301 | static struct value * |
9302 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
9303 | struct value *val0) | |
14f9c5c9 | 9304 | { |
1ed6ede0 | 9305 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
5b4ee69b | 9306 | |
14f9c5c9 AS |
9307 | if (type == type0 && val0 != NULL) |
9308 | return val0; | |
cc0e770c JB |
9309 | |
9310 | if (VALUE_LVAL (val0) != lval_memory) | |
9311 | { | |
9312 | /* Our value does not live in memory; it could be a convenience | |
9313 | variable, for instance. Create a not_lval value using val0's | |
9314 | contents. */ | |
9315 | return value_from_contents (type, value_contents (val0)); | |
9316 | } | |
9317 | ||
9318 | return value_from_contents_and_address (type, 0, address); | |
4c4b4cd2 PH |
9319 | } |
9320 | ||
9321 | /* A value representing VAL, but with a standard (static-sized) type | |
9322 | that correctly describes it. Does not necessarily create a new | |
9323 | value. */ | |
9324 | ||
0c3acc09 | 9325 | struct value * |
4c4b4cd2 PH |
9326 | ada_to_fixed_value (struct value *val) |
9327 | { | |
c48db5ca | 9328 | val = unwrap_value (val); |
d8ce9127 | 9329 | val = ada_to_fixed_value_create (value_type (val), value_address (val), val); |
c48db5ca | 9330 | return val; |
14f9c5c9 | 9331 | } |
d2e4a39e | 9332 | \f |
14f9c5c9 | 9333 | |
14f9c5c9 AS |
9334 | /* Attributes */ |
9335 | ||
4c4b4cd2 PH |
9336 | /* Table mapping attribute numbers to names. |
9337 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 9338 | |
d2e4a39e | 9339 | static const char *attribute_names[] = { |
14f9c5c9 AS |
9340 | "<?>", |
9341 | ||
d2e4a39e | 9342 | "first", |
14f9c5c9 AS |
9343 | "last", |
9344 | "length", | |
9345 | "image", | |
14f9c5c9 AS |
9346 | "max", |
9347 | "min", | |
4c4b4cd2 PH |
9348 | "modulus", |
9349 | "pos", | |
9350 | "size", | |
9351 | "tag", | |
14f9c5c9 | 9352 | "val", |
14f9c5c9 AS |
9353 | 0 |
9354 | }; | |
9355 | ||
d2e4a39e | 9356 | const char * |
4c4b4cd2 | 9357 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 9358 | { |
4c4b4cd2 PH |
9359 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
9360 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
9361 | else |
9362 | return attribute_names[0]; | |
9363 | } | |
9364 | ||
4c4b4cd2 | 9365 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 9366 | |
4c4b4cd2 PH |
9367 | static LONGEST |
9368 | pos_atr (struct value *arg) | |
14f9c5c9 | 9369 | { |
24209737 PH |
9370 | struct value *val = coerce_ref (arg); |
9371 | struct type *type = value_type (val); | |
aa715135 | 9372 | LONGEST result; |
14f9c5c9 | 9373 | |
d2e4a39e | 9374 | if (!discrete_type_p (type)) |
323e0a4a | 9375 | error (_("'POS only defined on discrete types")); |
14f9c5c9 | 9376 | |
aa715135 JG |
9377 | if (!discrete_position (type, value_as_long (val), &result)) |
9378 | error (_("enumeration value is invalid: can't find 'POS")); | |
14f9c5c9 | 9379 | |
aa715135 | 9380 | return result; |
4c4b4cd2 PH |
9381 | } |
9382 | ||
9383 | static struct value * | |
3cb382c9 | 9384 | value_pos_atr (struct type *type, struct value *arg) |
4c4b4cd2 | 9385 | { |
3cb382c9 | 9386 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
9387 | } |
9388 | ||
4c4b4cd2 | 9389 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 9390 | |
d2e4a39e AS |
9391 | static struct value * |
9392 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 9393 | { |
d2e4a39e | 9394 | if (!discrete_type_p (type)) |
323e0a4a | 9395 | error (_("'VAL only defined on discrete types")); |
df407dfe | 9396 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 9397 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
9398 | |
9399 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
9400 | { | |
9401 | long pos = value_as_long (arg); | |
5b4ee69b | 9402 | |
14f9c5c9 | 9403 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) |
323e0a4a | 9404 | error (_("argument to 'VAL out of range")); |
14e75d8e | 9405 | return value_from_longest (type, TYPE_FIELD_ENUMVAL (type, pos)); |
14f9c5c9 AS |
9406 | } |
9407 | else | |
9408 | return value_from_longest (type, value_as_long (arg)); | |
9409 | } | |
14f9c5c9 | 9410 | \f |
d2e4a39e | 9411 | |
4c4b4cd2 | 9412 | /* Evaluation */ |
14f9c5c9 | 9413 | |
4c4b4cd2 PH |
9414 | /* True if TYPE appears to be an Ada character type. |
9415 | [At the moment, this is true only for Character and Wide_Character; | |
9416 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 9417 | |
fc913e53 | 9418 | bool |
d2e4a39e | 9419 | ada_is_character_type (struct type *type) |
14f9c5c9 | 9420 | { |
7b9f71f2 JB |
9421 | const char *name; |
9422 | ||
9423 | /* If the type code says it's a character, then assume it really is, | |
9424 | and don't check any further. */ | |
9425 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
fc913e53 | 9426 | return true; |
7b9f71f2 JB |
9427 | |
9428 | /* Otherwise, assume it's a character type iff it is a discrete type | |
9429 | with a known character type name. */ | |
9430 | name = ada_type_name (type); | |
9431 | return (name != NULL | |
9432 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
9433 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
9434 | && (strcmp (name, "character") == 0 | |
9435 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 9436 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 9437 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
9438 | } |
9439 | ||
4c4b4cd2 | 9440 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 | 9441 | |
fc913e53 | 9442 | bool |
ebf56fd3 | 9443 | ada_is_string_type (struct type *type) |
14f9c5c9 | 9444 | { |
61ee279c | 9445 | type = ada_check_typedef (type); |
d2e4a39e | 9446 | if (type != NULL |
14f9c5c9 | 9447 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
9448 | && (ada_is_simple_array_type (type) |
9449 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
9450 | && ada_array_arity (type) == 1) |
9451 | { | |
9452 | struct type *elttype = ada_array_element_type (type, 1); | |
9453 | ||
9454 | return ada_is_character_type (elttype); | |
9455 | } | |
d2e4a39e | 9456 | else |
fc913e53 | 9457 | return false; |
14f9c5c9 AS |
9458 | } |
9459 | ||
5bf03f13 JB |
9460 | /* The compiler sometimes provides a parallel XVS type for a given |
9461 | PAD type. Normally, it is safe to follow the PAD type directly, | |
9462 | but older versions of the compiler have a bug that causes the offset | |
9463 | of its "F" field to be wrong. Following that field in that case | |
9464 | would lead to incorrect results, but this can be worked around | |
9465 | by ignoring the PAD type and using the associated XVS type instead. | |
9466 | ||
9467 | Set to True if the debugger should trust the contents of PAD types. | |
9468 | Otherwise, ignore the PAD type if there is a parallel XVS type. */ | |
9469 | static int trust_pad_over_xvs = 1; | |
14f9c5c9 AS |
9470 | |
9471 | /* True if TYPE is a struct type introduced by the compiler to force the | |
9472 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 9473 | distinctive name. */ |
14f9c5c9 AS |
9474 | |
9475 | int | |
ebf56fd3 | 9476 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 9477 | { |
61ee279c | 9478 | type = ada_check_typedef (type); |
714e53ab | 9479 | |
5bf03f13 | 9480 | if (!trust_pad_over_xvs && ada_find_parallel_type (type, "___XVS") != NULL) |
714e53ab PH |
9481 | return 0; |
9482 | ||
14f9c5c9 | 9483 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
9484 | && TYPE_NFIELDS (type) == 1 |
9485 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
9486 | } |
9487 | ||
9488 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 9489 | the parallel type. */ |
14f9c5c9 | 9490 | |
d2e4a39e AS |
9491 | struct type * |
9492 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 9493 | { |
d2e4a39e AS |
9494 | struct type *real_type_namer; |
9495 | struct type *raw_real_type; | |
14f9c5c9 AS |
9496 | |
9497 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
9498 | return raw_type; | |
9499 | ||
284614f0 JB |
9500 | if (ada_is_aligner_type (raw_type)) |
9501 | /* The encoding specifies that we should always use the aligner type. | |
9502 | So, even if this aligner type has an associated XVS type, we should | |
9503 | simply ignore it. | |
9504 | ||
9505 | According to the compiler gurus, an XVS type parallel to an aligner | |
9506 | type may exist because of a stabs limitation. In stabs, aligner | |
9507 | types are empty because the field has a variable-sized type, and | |
9508 | thus cannot actually be used as an aligner type. As a result, | |
9509 | we need the associated parallel XVS type to decode the type. | |
9510 | Since the policy in the compiler is to not change the internal | |
9511 | representation based on the debugging info format, we sometimes | |
9512 | end up having a redundant XVS type parallel to the aligner type. */ | |
9513 | return raw_type; | |
9514 | ||
14f9c5c9 | 9515 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 9516 | if (real_type_namer == NULL |
14f9c5c9 AS |
9517 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
9518 | || TYPE_NFIELDS (real_type_namer) != 1) | |
9519 | return raw_type; | |
9520 | ||
f80d3ff2 JB |
9521 | if (TYPE_CODE (TYPE_FIELD_TYPE (real_type_namer, 0)) != TYPE_CODE_REF) |
9522 | { | |
9523 | /* This is an older encoding form where the base type needs to be | |
9524 | looked up by name. We prefer the newer enconding because it is | |
9525 | more efficient. */ | |
9526 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
9527 | if (raw_real_type == NULL) | |
9528 | return raw_type; | |
9529 | else | |
9530 | return raw_real_type; | |
9531 | } | |
9532 | ||
9533 | /* The field in our XVS type is a reference to the base type. */ | |
9534 | return TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (real_type_namer, 0)); | |
d2e4a39e | 9535 | } |
14f9c5c9 | 9536 | |
4c4b4cd2 | 9537 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 9538 | |
d2e4a39e AS |
9539 | struct type * |
9540 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
9541 | { |
9542 | if (ada_is_aligner_type (type)) | |
9543 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
9544 | else | |
9545 | return ada_get_base_type (type); | |
9546 | } | |
9547 | ||
9548 | ||
9549 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 9550 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 9551 | |
fc1a4b47 AC |
9552 | const gdb_byte * |
9553 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 9554 | { |
d2e4a39e | 9555 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 9556 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
9557 | valaddr + |
9558 | TYPE_FIELD_BITPOS (type, | |
9559 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
9560 | else |
9561 | return valaddr; | |
9562 | } | |
9563 | ||
4c4b4cd2 PH |
9564 | |
9565 | ||
14f9c5c9 | 9566 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 9567 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
9568 | const char * |
9569 | ada_enum_name (const char *name) | |
14f9c5c9 | 9570 | { |
4c4b4cd2 PH |
9571 | static char *result; |
9572 | static size_t result_len = 0; | |
e6a959d6 | 9573 | const char *tmp; |
14f9c5c9 | 9574 | |
4c4b4cd2 PH |
9575 | /* First, unqualify the enumeration name: |
9576 | 1. Search for the last '.' character. If we find one, then skip | |
177b42fe | 9577 | all the preceding characters, the unqualified name starts |
76a01679 | 9578 | right after that dot. |
4c4b4cd2 | 9579 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
9580 | translates dots into "__". Search forward for double underscores, |
9581 | but stop searching when we hit an overloading suffix, which is | |
9582 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 9583 | |
c3e5cd34 PH |
9584 | tmp = strrchr (name, '.'); |
9585 | if (tmp != NULL) | |
4c4b4cd2 PH |
9586 | name = tmp + 1; |
9587 | else | |
14f9c5c9 | 9588 | { |
4c4b4cd2 PH |
9589 | while ((tmp = strstr (name, "__")) != NULL) |
9590 | { | |
9591 | if (isdigit (tmp[2])) | |
9592 | break; | |
9593 | else | |
9594 | name = tmp + 2; | |
9595 | } | |
14f9c5c9 AS |
9596 | } |
9597 | ||
9598 | if (name[0] == 'Q') | |
9599 | { | |
14f9c5c9 | 9600 | int v; |
5b4ee69b | 9601 | |
14f9c5c9 | 9602 | if (name[1] == 'U' || name[1] == 'W') |
4c4b4cd2 PH |
9603 | { |
9604 | if (sscanf (name + 2, "%x", &v) != 1) | |
9605 | return name; | |
9606 | } | |
14f9c5c9 | 9607 | else |
4c4b4cd2 | 9608 | return name; |
14f9c5c9 | 9609 | |
4c4b4cd2 | 9610 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 9611 | if (isascii (v) && isprint (v)) |
88c15c34 | 9612 | xsnprintf (result, result_len, "'%c'", v); |
14f9c5c9 | 9613 | else if (name[1] == 'U') |
88c15c34 | 9614 | xsnprintf (result, result_len, "[\"%02x\"]", v); |
14f9c5c9 | 9615 | else |
88c15c34 | 9616 | xsnprintf (result, result_len, "[\"%04x\"]", v); |
14f9c5c9 AS |
9617 | |
9618 | return result; | |
9619 | } | |
d2e4a39e | 9620 | else |
4c4b4cd2 | 9621 | { |
c3e5cd34 PH |
9622 | tmp = strstr (name, "__"); |
9623 | if (tmp == NULL) | |
9624 | tmp = strstr (name, "$"); | |
9625 | if (tmp != NULL) | |
4c4b4cd2 PH |
9626 | { |
9627 | GROW_VECT (result, result_len, tmp - name + 1); | |
9628 | strncpy (result, name, tmp - name); | |
9629 | result[tmp - name] = '\0'; | |
9630 | return result; | |
9631 | } | |
9632 | ||
9633 | return name; | |
9634 | } | |
14f9c5c9 AS |
9635 | } |
9636 | ||
14f9c5c9 AS |
9637 | /* Evaluate the subexpression of EXP starting at *POS as for |
9638 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 9639 | expression. */ |
14f9c5c9 | 9640 | |
d2e4a39e AS |
9641 | static struct value * |
9642 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 9643 | { |
4b27a620 | 9644 | return evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
14f9c5c9 AS |
9645 | } |
9646 | ||
9647 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 9648 | value it wraps. */ |
14f9c5c9 | 9649 | |
d2e4a39e AS |
9650 | static struct value * |
9651 | unwrap_value (struct value *val) | |
14f9c5c9 | 9652 | { |
df407dfe | 9653 | struct type *type = ada_check_typedef (value_type (val)); |
5b4ee69b | 9654 | |
14f9c5c9 AS |
9655 | if (ada_is_aligner_type (type)) |
9656 | { | |
de4d072f | 9657 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 9658 | struct type *val_type = ada_check_typedef (value_type (v)); |
5b4ee69b | 9659 | |
14f9c5c9 | 9660 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 9661 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
9662 | |
9663 | return unwrap_value (v); | |
9664 | } | |
d2e4a39e | 9665 | else |
14f9c5c9 | 9666 | { |
d2e4a39e | 9667 | struct type *raw_real_type = |
61ee279c | 9668 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 9669 | |
5bf03f13 JB |
9670 | /* If there is no parallel XVS or XVE type, then the value is |
9671 | already unwrapped. Return it without further modification. */ | |
9672 | if ((type == raw_real_type) | |
9673 | && ada_find_parallel_type (type, "___XVE") == NULL) | |
9674 | return val; | |
14f9c5c9 | 9675 | |
d2e4a39e | 9676 | return |
4c4b4cd2 PH |
9677 | coerce_unspec_val_to_type |
9678 | (val, ada_to_fixed_type (raw_real_type, 0, | |
42ae5230 | 9679 | value_address (val), |
1ed6ede0 | 9680 | NULL, 1)); |
14f9c5c9 AS |
9681 | } |
9682 | } | |
d2e4a39e AS |
9683 | |
9684 | static struct value * | |
50eff16b | 9685 | cast_from_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 9686 | { |
50eff16b UW |
9687 | struct value *scale = ada_scaling_factor (value_type (arg)); |
9688 | arg = value_cast (value_type (scale), arg); | |
14f9c5c9 | 9689 | |
50eff16b UW |
9690 | arg = value_binop (arg, scale, BINOP_MUL); |
9691 | return value_cast (type, arg); | |
14f9c5c9 AS |
9692 | } |
9693 | ||
d2e4a39e | 9694 | static struct value * |
50eff16b | 9695 | cast_to_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 9696 | { |
50eff16b UW |
9697 | if (type == value_type (arg)) |
9698 | return arg; | |
5b4ee69b | 9699 | |
50eff16b UW |
9700 | struct value *scale = ada_scaling_factor (type); |
9701 | if (ada_is_fixed_point_type (value_type (arg))) | |
9702 | arg = cast_from_fixed (value_type (scale), arg); | |
9703 | else | |
9704 | arg = value_cast (value_type (scale), arg); | |
9705 | ||
9706 | arg = value_binop (arg, scale, BINOP_DIV); | |
9707 | return value_cast (type, arg); | |
14f9c5c9 AS |
9708 | } |
9709 | ||
d99dcf51 JB |
9710 | /* Given two array types T1 and T2, return nonzero iff both arrays |
9711 | contain the same number of elements. */ | |
9712 | ||
9713 | static int | |
9714 | ada_same_array_size_p (struct type *t1, struct type *t2) | |
9715 | { | |
9716 | LONGEST lo1, hi1, lo2, hi2; | |
9717 | ||
9718 | /* Get the array bounds in order to verify that the size of | |
9719 | the two arrays match. */ | |
9720 | if (!get_array_bounds (t1, &lo1, &hi1) | |
9721 | || !get_array_bounds (t2, &lo2, &hi2)) | |
9722 | error (_("unable to determine array bounds")); | |
9723 | ||
9724 | /* To make things easier for size comparison, normalize a bit | |
9725 | the case of empty arrays by making sure that the difference | |
9726 | between upper bound and lower bound is always -1. */ | |
9727 | if (lo1 > hi1) | |
9728 | hi1 = lo1 - 1; | |
9729 | if (lo2 > hi2) | |
9730 | hi2 = lo2 - 1; | |
9731 | ||
9732 | return (hi1 - lo1 == hi2 - lo2); | |
9733 | } | |
9734 | ||
9735 | /* Assuming that VAL is an array of integrals, and TYPE represents | |
9736 | an array with the same number of elements, but with wider integral | |
9737 | elements, return an array "casted" to TYPE. In practice, this | |
9738 | means that the returned array is built by casting each element | |
9739 | of the original array into TYPE's (wider) element type. */ | |
9740 | ||
9741 | static struct value * | |
9742 | ada_promote_array_of_integrals (struct type *type, struct value *val) | |
9743 | { | |
9744 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
9745 | LONGEST lo, hi; | |
9746 | struct value *res; | |
9747 | LONGEST i; | |
9748 | ||
9749 | /* Verify that both val and type are arrays of scalars, and | |
9750 | that the size of val's elements is smaller than the size | |
9751 | of type's element. */ | |
9752 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); | |
9753 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (type))); | |
9754 | gdb_assert (TYPE_CODE (value_type (val)) == TYPE_CODE_ARRAY); | |
9755 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (value_type (val)))); | |
9756 | gdb_assert (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) | |
9757 | > TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (val)))); | |
9758 | ||
9759 | if (!get_array_bounds (type, &lo, &hi)) | |
9760 | error (_("unable to determine array bounds")); | |
9761 | ||
9762 | res = allocate_value (type); | |
9763 | ||
9764 | /* Promote each array element. */ | |
9765 | for (i = 0; i < hi - lo + 1; i++) | |
9766 | { | |
9767 | struct value *elt = value_cast (elt_type, value_subscript (val, lo + i)); | |
9768 | ||
9769 | memcpy (value_contents_writeable (res) + (i * TYPE_LENGTH (elt_type)), | |
9770 | value_contents_all (elt), TYPE_LENGTH (elt_type)); | |
9771 | } | |
9772 | ||
9773 | return res; | |
9774 | } | |
9775 | ||
4c4b4cd2 PH |
9776 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
9777 | return the converted value. */ | |
9778 | ||
d2e4a39e AS |
9779 | static struct value * |
9780 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 9781 | { |
df407dfe | 9782 | struct type *type2 = value_type (val); |
5b4ee69b | 9783 | |
14f9c5c9 AS |
9784 | if (type == type2) |
9785 | return val; | |
9786 | ||
61ee279c PH |
9787 | type2 = ada_check_typedef (type2); |
9788 | type = ada_check_typedef (type); | |
14f9c5c9 | 9789 | |
d2e4a39e AS |
9790 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
9791 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
9792 | { |
9793 | val = ada_value_ind (val); | |
df407dfe | 9794 | type2 = value_type (val); |
14f9c5c9 AS |
9795 | } |
9796 | ||
d2e4a39e | 9797 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
9798 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
9799 | { | |
d99dcf51 JB |
9800 | if (!ada_same_array_size_p (type, type2)) |
9801 | error (_("cannot assign arrays of different length")); | |
9802 | ||
9803 | if (is_integral_type (TYPE_TARGET_TYPE (type)) | |
9804 | && is_integral_type (TYPE_TARGET_TYPE (type2)) | |
9805 | && TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
9806 | < TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
9807 | { | |
9808 | /* Allow implicit promotion of the array elements to | |
9809 | a wider type. */ | |
9810 | return ada_promote_array_of_integrals (type, val); | |
9811 | } | |
9812 | ||
9813 | if (TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
9814 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
323e0a4a | 9815 | error (_("Incompatible types in assignment")); |
04624583 | 9816 | deprecated_set_value_type (val, type); |
14f9c5c9 | 9817 | } |
d2e4a39e | 9818 | return val; |
14f9c5c9 AS |
9819 | } |
9820 | ||
4c4b4cd2 PH |
9821 | static struct value * |
9822 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
9823 | { | |
9824 | struct value *val; | |
9825 | struct type *type1, *type2; | |
9826 | LONGEST v, v1, v2; | |
9827 | ||
994b9211 AC |
9828 | arg1 = coerce_ref (arg1); |
9829 | arg2 = coerce_ref (arg2); | |
18af8284 JB |
9830 | type1 = get_base_type (ada_check_typedef (value_type (arg1))); |
9831 | type2 = get_base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 9832 | |
76a01679 JB |
9833 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
9834 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
9835 | return value_binop (arg1, arg2, op); |
9836 | ||
76a01679 | 9837 | switch (op) |
4c4b4cd2 PH |
9838 | { |
9839 | case BINOP_MOD: | |
9840 | case BINOP_DIV: | |
9841 | case BINOP_REM: | |
9842 | break; | |
9843 | default: | |
9844 | return value_binop (arg1, arg2, op); | |
9845 | } | |
9846 | ||
9847 | v2 = value_as_long (arg2); | |
9848 | if (v2 == 0) | |
323e0a4a | 9849 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
9850 | |
9851 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
9852 | return value_binop (arg1, arg2, op); | |
9853 | ||
9854 | v1 = value_as_long (arg1); | |
9855 | switch (op) | |
9856 | { | |
9857 | case BINOP_DIV: | |
9858 | v = v1 / v2; | |
76a01679 JB |
9859 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
9860 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
9861 | break; |
9862 | case BINOP_REM: | |
9863 | v = v1 % v2; | |
76a01679 JB |
9864 | if (v * v1 < 0) |
9865 | v -= v2; | |
4c4b4cd2 PH |
9866 | break; |
9867 | default: | |
9868 | /* Should not reach this point. */ | |
9869 | v = 0; | |
9870 | } | |
9871 | ||
9872 | val = allocate_value (type1); | |
990a07ab | 9873 | store_unsigned_integer (value_contents_raw (val), |
e17a4113 UW |
9874 | TYPE_LENGTH (value_type (val)), |
9875 | gdbarch_byte_order (get_type_arch (type1)), v); | |
4c4b4cd2 PH |
9876 | return val; |
9877 | } | |
9878 | ||
9879 | static int | |
9880 | ada_value_equal (struct value *arg1, struct value *arg2) | |
9881 | { | |
df407dfe AC |
9882 | if (ada_is_direct_array_type (value_type (arg1)) |
9883 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 9884 | { |
79e8fcaa JB |
9885 | struct type *arg1_type, *arg2_type; |
9886 | ||
f58b38bf JB |
9887 | /* Automatically dereference any array reference before |
9888 | we attempt to perform the comparison. */ | |
9889 | arg1 = ada_coerce_ref (arg1); | |
9890 | arg2 = ada_coerce_ref (arg2); | |
79e8fcaa | 9891 | |
4c4b4cd2 PH |
9892 | arg1 = ada_coerce_to_simple_array (arg1); |
9893 | arg2 = ada_coerce_to_simple_array (arg2); | |
79e8fcaa JB |
9894 | |
9895 | arg1_type = ada_check_typedef (value_type (arg1)); | |
9896 | arg2_type = ada_check_typedef (value_type (arg2)); | |
9897 | ||
9898 | if (TYPE_CODE (arg1_type) != TYPE_CODE_ARRAY | |
9899 | || TYPE_CODE (arg2_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 9900 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 9901 | /* FIXME: The following works only for types whose |
76a01679 JB |
9902 | representations use all bits (no padding or undefined bits) |
9903 | and do not have user-defined equality. */ | |
79e8fcaa JB |
9904 | return (TYPE_LENGTH (arg1_type) == TYPE_LENGTH (arg2_type) |
9905 | && memcmp (value_contents (arg1), value_contents (arg2), | |
9906 | TYPE_LENGTH (arg1_type)) == 0); | |
4c4b4cd2 PH |
9907 | } |
9908 | return value_equal (arg1, arg2); | |
9909 | } | |
9910 | ||
52ce6436 PH |
9911 | /* Total number of component associations in the aggregate starting at |
9912 | index PC in EXP. Assumes that index PC is the start of an | |
0963b4bd | 9913 | OP_AGGREGATE. */ |
52ce6436 PH |
9914 | |
9915 | static int | |
9916 | num_component_specs (struct expression *exp, int pc) | |
9917 | { | |
9918 | int n, m, i; | |
5b4ee69b | 9919 | |
52ce6436 PH |
9920 | m = exp->elts[pc + 1].longconst; |
9921 | pc += 3; | |
9922 | n = 0; | |
9923 | for (i = 0; i < m; i += 1) | |
9924 | { | |
9925 | switch (exp->elts[pc].opcode) | |
9926 | { | |
9927 | default: | |
9928 | n += 1; | |
9929 | break; | |
9930 | case OP_CHOICES: | |
9931 | n += exp->elts[pc + 1].longconst; | |
9932 | break; | |
9933 | } | |
9934 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
9935 | } | |
9936 | return n; | |
9937 | } | |
9938 | ||
9939 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
9940 | component of LHS (a simple array or a record), updating *POS past | |
9941 | the expression, assuming that LHS is contained in CONTAINER. Does | |
9942 | not modify the inferior's memory, nor does it modify LHS (unless | |
9943 | LHS == CONTAINER). */ | |
9944 | ||
9945 | static void | |
9946 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
9947 | struct expression *exp, int *pos) | |
9948 | { | |
9949 | struct value *mark = value_mark (); | |
9950 | struct value *elt; | |
0e2da9f0 | 9951 | struct type *lhs_type = check_typedef (value_type (lhs)); |
5b4ee69b | 9952 | |
0e2da9f0 | 9953 | if (TYPE_CODE (lhs_type) == TYPE_CODE_ARRAY) |
52ce6436 | 9954 | { |
22601c15 UW |
9955 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
9956 | struct value *index_val = value_from_longest (index_type, index); | |
5b4ee69b | 9957 | |
52ce6436 PH |
9958 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
9959 | } | |
9960 | else | |
9961 | { | |
9962 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
c48db5ca | 9963 | elt = ada_to_fixed_value (elt); |
52ce6436 PH |
9964 | } |
9965 | ||
9966 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
9967 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
9968 | else | |
9969 | value_assign_to_component (container, elt, | |
9970 | ada_evaluate_subexp (NULL, exp, pos, | |
9971 | EVAL_NORMAL)); | |
9972 | ||
9973 | value_free_to_mark (mark); | |
9974 | } | |
9975 | ||
9976 | /* Assuming that LHS represents an lvalue having a record or array | |
9977 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
9978 | of that aggregate's value to LHS, advancing *POS past the | |
9979 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
9980 | lvalue containing LHS (possibly LHS itself). Does not modify | |
9981 | the inferior's memory, nor does it modify the contents of | |
0963b4bd | 9982 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ |
52ce6436 PH |
9983 | |
9984 | static struct value * | |
9985 | assign_aggregate (struct value *container, | |
9986 | struct value *lhs, struct expression *exp, | |
9987 | int *pos, enum noside noside) | |
9988 | { | |
9989 | struct type *lhs_type; | |
9990 | int n = exp->elts[*pos+1].longconst; | |
9991 | LONGEST low_index, high_index; | |
9992 | int num_specs; | |
9993 | LONGEST *indices; | |
9994 | int max_indices, num_indices; | |
52ce6436 | 9995 | int i; |
52ce6436 PH |
9996 | |
9997 | *pos += 3; | |
9998 | if (noside != EVAL_NORMAL) | |
9999 | { | |
52ce6436 PH |
10000 | for (i = 0; i < n; i += 1) |
10001 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
10002 | return container; | |
10003 | } | |
10004 | ||
10005 | container = ada_coerce_ref (container); | |
10006 | if (ada_is_direct_array_type (value_type (container))) | |
10007 | container = ada_coerce_to_simple_array (container); | |
10008 | lhs = ada_coerce_ref (lhs); | |
10009 | if (!deprecated_value_modifiable (lhs)) | |
10010 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
10011 | ||
0e2da9f0 | 10012 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
10013 | if (ada_is_direct_array_type (lhs_type)) |
10014 | { | |
10015 | lhs = ada_coerce_to_simple_array (lhs); | |
0e2da9f0 | 10016 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
10017 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); |
10018 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
52ce6436 PH |
10019 | } |
10020 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
10021 | { | |
10022 | low_index = 0; | |
10023 | high_index = num_visible_fields (lhs_type) - 1; | |
52ce6436 PH |
10024 | } |
10025 | else | |
10026 | error (_("Left-hand side must be array or record.")); | |
10027 | ||
10028 | num_specs = num_component_specs (exp, *pos - 3); | |
10029 | max_indices = 4 * num_specs + 4; | |
8d749320 | 10030 | indices = XALLOCAVEC (LONGEST, max_indices); |
52ce6436 PH |
10031 | indices[0] = indices[1] = low_index - 1; |
10032 | indices[2] = indices[3] = high_index + 1; | |
10033 | num_indices = 4; | |
10034 | ||
10035 | for (i = 0; i < n; i += 1) | |
10036 | { | |
10037 | switch (exp->elts[*pos].opcode) | |
10038 | { | |
1fbf5ada JB |
10039 | case OP_CHOICES: |
10040 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
10041 | &num_indices, max_indices, | |
10042 | low_index, high_index); | |
10043 | break; | |
10044 | case OP_POSITIONAL: | |
10045 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
52ce6436 PH |
10046 | &num_indices, max_indices, |
10047 | low_index, high_index); | |
1fbf5ada JB |
10048 | break; |
10049 | case OP_OTHERS: | |
10050 | if (i != n-1) | |
10051 | error (_("Misplaced 'others' clause")); | |
10052 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
10053 | num_indices, low_index, high_index); | |
10054 | break; | |
10055 | default: | |
10056 | error (_("Internal error: bad aggregate clause")); | |
52ce6436 PH |
10057 | } |
10058 | } | |
10059 | ||
10060 | return container; | |
10061 | } | |
10062 | ||
10063 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
10064 | construct at *POS, updating *POS past the construct, given that | |
10065 | the positions are relative to lower bound LOW, where HIGH is the | |
10066 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
10067 | updating *NUM_INDICES as needed. CONTAINER is as for | |
0963b4bd | 10068 | assign_aggregate. */ |
52ce6436 PH |
10069 | static void |
10070 | aggregate_assign_positional (struct value *container, | |
10071 | struct value *lhs, struct expression *exp, | |
10072 | int *pos, LONGEST *indices, int *num_indices, | |
10073 | int max_indices, LONGEST low, LONGEST high) | |
10074 | { | |
10075 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
10076 | ||
10077 | if (ind - 1 == high) | |
e1d5a0d2 | 10078 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
10079 | if (ind <= high) |
10080 | { | |
10081 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
10082 | *pos += 3; | |
10083 | assign_component (container, lhs, ind, exp, pos); | |
10084 | } | |
10085 | else | |
10086 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10087 | } | |
10088 | ||
10089 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
10090 | construct at *POS, updating *POS past the construct, given that | |
10091 | the allowable indices are LOW..HIGH. Record the indices assigned | |
10092 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
0963b4bd | 10093 | needed. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
10094 | static void |
10095 | aggregate_assign_from_choices (struct value *container, | |
10096 | struct value *lhs, struct expression *exp, | |
10097 | int *pos, LONGEST *indices, int *num_indices, | |
10098 | int max_indices, LONGEST low, LONGEST high) | |
10099 | { | |
10100 | int j; | |
10101 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
10102 | int choice_pos, expr_pc; | |
10103 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
10104 | ||
10105 | choice_pos = *pos += 3; | |
10106 | ||
10107 | for (j = 0; j < n_choices; j += 1) | |
10108 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10109 | expr_pc = *pos; | |
10110 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10111 | ||
10112 | for (j = 0; j < n_choices; j += 1) | |
10113 | { | |
10114 | LONGEST lower, upper; | |
10115 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
5b4ee69b | 10116 | |
52ce6436 PH |
10117 | if (op == OP_DISCRETE_RANGE) |
10118 | { | |
10119 | choice_pos += 1; | |
10120 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
10121 | EVAL_NORMAL)); | |
10122 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
10123 | EVAL_NORMAL)); | |
10124 | } | |
10125 | else if (is_array) | |
10126 | { | |
10127 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
10128 | EVAL_NORMAL)); | |
10129 | upper = lower; | |
10130 | } | |
10131 | else | |
10132 | { | |
10133 | int ind; | |
0d5cff50 | 10134 | const char *name; |
5b4ee69b | 10135 | |
52ce6436 PH |
10136 | switch (op) |
10137 | { | |
10138 | case OP_NAME: | |
10139 | name = &exp->elts[choice_pos + 2].string; | |
10140 | break; | |
10141 | case OP_VAR_VALUE: | |
10142 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
10143 | break; | |
10144 | default: | |
10145 | error (_("Invalid record component association.")); | |
10146 | } | |
10147 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
10148 | ind = 0; | |
10149 | if (! find_struct_field (name, value_type (lhs), 0, | |
10150 | NULL, NULL, NULL, NULL, &ind)) | |
10151 | error (_("Unknown component name: %s."), name); | |
10152 | lower = upper = ind; | |
10153 | } | |
10154 | ||
10155 | if (lower <= upper && (lower < low || upper > high)) | |
10156 | error (_("Index in component association out of bounds.")); | |
10157 | ||
10158 | add_component_interval (lower, upper, indices, num_indices, | |
10159 | max_indices); | |
10160 | while (lower <= upper) | |
10161 | { | |
10162 | int pos1; | |
5b4ee69b | 10163 | |
52ce6436 PH |
10164 | pos1 = expr_pc; |
10165 | assign_component (container, lhs, lower, exp, &pos1); | |
10166 | lower += 1; | |
10167 | } | |
10168 | } | |
10169 | } | |
10170 | ||
10171 | /* Assign the value of the expression in the OP_OTHERS construct in | |
10172 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
10173 | have not been previously assigned. The index intervals already assigned | |
10174 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
0963b4bd | 10175 | OP_OTHERS clause. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
10176 | static void |
10177 | aggregate_assign_others (struct value *container, | |
10178 | struct value *lhs, struct expression *exp, | |
10179 | int *pos, LONGEST *indices, int num_indices, | |
10180 | LONGEST low, LONGEST high) | |
10181 | { | |
10182 | int i; | |
5ce64950 | 10183 | int expr_pc = *pos + 1; |
52ce6436 PH |
10184 | |
10185 | for (i = 0; i < num_indices - 2; i += 2) | |
10186 | { | |
10187 | LONGEST ind; | |
5b4ee69b | 10188 | |
52ce6436 PH |
10189 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) |
10190 | { | |
5ce64950 | 10191 | int localpos; |
5b4ee69b | 10192 | |
5ce64950 MS |
10193 | localpos = expr_pc; |
10194 | assign_component (container, lhs, ind, exp, &localpos); | |
52ce6436 PH |
10195 | } |
10196 | } | |
10197 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10198 | } | |
10199 | ||
10200 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
10201 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
10202 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
10203 | MAX_SIZE. The resulting intervals do not overlap. */ | |
10204 | static void | |
10205 | add_component_interval (LONGEST low, LONGEST high, | |
10206 | LONGEST* indices, int *size, int max_size) | |
10207 | { | |
10208 | int i, j; | |
5b4ee69b | 10209 | |
52ce6436 PH |
10210 | for (i = 0; i < *size; i += 2) { |
10211 | if (high >= indices[i] && low <= indices[i + 1]) | |
10212 | { | |
10213 | int kh; | |
5b4ee69b | 10214 | |
52ce6436 PH |
10215 | for (kh = i + 2; kh < *size; kh += 2) |
10216 | if (high < indices[kh]) | |
10217 | break; | |
10218 | if (low < indices[i]) | |
10219 | indices[i] = low; | |
10220 | indices[i + 1] = indices[kh - 1]; | |
10221 | if (high > indices[i + 1]) | |
10222 | indices[i + 1] = high; | |
10223 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
10224 | *size -= kh - i - 2; | |
10225 | return; | |
10226 | } | |
10227 | else if (high < indices[i]) | |
10228 | break; | |
10229 | } | |
10230 | ||
10231 | if (*size == max_size) | |
10232 | error (_("Internal error: miscounted aggregate components.")); | |
10233 | *size += 2; | |
10234 | for (j = *size-1; j >= i+2; j -= 1) | |
10235 | indices[j] = indices[j - 2]; | |
10236 | indices[i] = low; | |
10237 | indices[i + 1] = high; | |
10238 | } | |
10239 | ||
6e48bd2c JB |
10240 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
10241 | is different. */ | |
10242 | ||
10243 | static struct value * | |
b7e22850 | 10244 | ada_value_cast (struct type *type, struct value *arg2) |
6e48bd2c JB |
10245 | { |
10246 | if (type == ada_check_typedef (value_type (arg2))) | |
10247 | return arg2; | |
10248 | ||
10249 | if (ada_is_fixed_point_type (type)) | |
95f39a5b | 10250 | return cast_to_fixed (type, arg2); |
6e48bd2c JB |
10251 | |
10252 | if (ada_is_fixed_point_type (value_type (arg2))) | |
a53b7a21 | 10253 | return cast_from_fixed (type, arg2); |
6e48bd2c JB |
10254 | |
10255 | return value_cast (type, arg2); | |
10256 | } | |
10257 | ||
284614f0 JB |
10258 | /* Evaluating Ada expressions, and printing their result. |
10259 | ------------------------------------------------------ | |
10260 | ||
21649b50 JB |
10261 | 1. Introduction: |
10262 | ---------------- | |
10263 | ||
284614f0 JB |
10264 | We usually evaluate an Ada expression in order to print its value. |
10265 | We also evaluate an expression in order to print its type, which | |
10266 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
10267 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
10268 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
10269 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
10270 | similar. | |
10271 | ||
10272 | Evaluating expressions is a little more complicated for Ada entities | |
10273 | than it is for entities in languages such as C. The main reason for | |
10274 | this is that Ada provides types whose definition might be dynamic. | |
10275 | One example of such types is variant records. Or another example | |
10276 | would be an array whose bounds can only be known at run time. | |
10277 | ||
10278 | The following description is a general guide as to what should be | |
10279 | done (and what should NOT be done) in order to evaluate an expression | |
10280 | involving such types, and when. This does not cover how the semantic | |
10281 | information is encoded by GNAT as this is covered separatly. For the | |
10282 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
10283 | in the GNAT sources. | |
10284 | ||
10285 | Ideally, we should embed each part of this description next to its | |
10286 | associated code. Unfortunately, the amount of code is so vast right | |
10287 | now that it's hard to see whether the code handling a particular | |
10288 | situation might be duplicated or not. One day, when the code is | |
10289 | cleaned up, this guide might become redundant with the comments | |
10290 | inserted in the code, and we might want to remove it. | |
10291 | ||
21649b50 JB |
10292 | 2. ``Fixing'' an Entity, the Simple Case: |
10293 | ----------------------------------------- | |
10294 | ||
284614f0 JB |
10295 | When evaluating Ada expressions, the tricky issue is that they may |
10296 | reference entities whose type contents and size are not statically | |
10297 | known. Consider for instance a variant record: | |
10298 | ||
10299 | type Rec (Empty : Boolean := True) is record | |
10300 | case Empty is | |
10301 | when True => null; | |
10302 | when False => Value : Integer; | |
10303 | end case; | |
10304 | end record; | |
10305 | Yes : Rec := (Empty => False, Value => 1); | |
10306 | No : Rec := (empty => True); | |
10307 | ||
10308 | The size and contents of that record depends on the value of the | |
10309 | descriminant (Rec.Empty). At this point, neither the debugging | |
10310 | information nor the associated type structure in GDB are able to | |
10311 | express such dynamic types. So what the debugger does is to create | |
10312 | "fixed" versions of the type that applies to the specific object. | |
10313 | We also informally refer to this opperation as "fixing" an object, | |
10314 | which means creating its associated fixed type. | |
10315 | ||
10316 | Example: when printing the value of variable "Yes" above, its fixed | |
10317 | type would look like this: | |
10318 | ||
10319 | type Rec is record | |
10320 | Empty : Boolean; | |
10321 | Value : Integer; | |
10322 | end record; | |
10323 | ||
10324 | On the other hand, if we printed the value of "No", its fixed type | |
10325 | would become: | |
10326 | ||
10327 | type Rec is record | |
10328 | Empty : Boolean; | |
10329 | end record; | |
10330 | ||
10331 | Things become a little more complicated when trying to fix an entity | |
10332 | with a dynamic type that directly contains another dynamic type, | |
10333 | such as an array of variant records, for instance. There are | |
10334 | two possible cases: Arrays, and records. | |
10335 | ||
21649b50 JB |
10336 | 3. ``Fixing'' Arrays: |
10337 | --------------------- | |
10338 | ||
10339 | The type structure in GDB describes an array in terms of its bounds, | |
10340 | and the type of its elements. By design, all elements in the array | |
10341 | have the same type and we cannot represent an array of variant elements | |
10342 | using the current type structure in GDB. When fixing an array, | |
10343 | we cannot fix the array element, as we would potentially need one | |
10344 | fixed type per element of the array. As a result, the best we can do | |
10345 | when fixing an array is to produce an array whose bounds and size | |
10346 | are correct (allowing us to read it from memory), but without having | |
10347 | touched its element type. Fixing each element will be done later, | |
10348 | when (if) necessary. | |
10349 | ||
10350 | Arrays are a little simpler to handle than records, because the same | |
10351 | amount of memory is allocated for each element of the array, even if | |
1b536f04 | 10352 | the amount of space actually used by each element differs from element |
21649b50 | 10353 | to element. Consider for instance the following array of type Rec: |
284614f0 JB |
10354 | |
10355 | type Rec_Array is array (1 .. 2) of Rec; | |
10356 | ||
1b536f04 JB |
10357 | The actual amount of memory occupied by each element might be different |
10358 | from element to element, depending on the value of their discriminant. | |
21649b50 | 10359 | But the amount of space reserved for each element in the array remains |
1b536f04 | 10360 | fixed regardless. So we simply need to compute that size using |
21649b50 JB |
10361 | the debugging information available, from which we can then determine |
10362 | the array size (we multiply the number of elements of the array by | |
10363 | the size of each element). | |
10364 | ||
10365 | The simplest case is when we have an array of a constrained element | |
10366 | type. For instance, consider the following type declarations: | |
10367 | ||
10368 | type Bounded_String (Max_Size : Integer) is | |
10369 | Length : Integer; | |
10370 | Buffer : String (1 .. Max_Size); | |
10371 | end record; | |
10372 | type Bounded_String_Array is array (1 ..2) of Bounded_String (80); | |
10373 | ||
10374 | In this case, the compiler describes the array as an array of | |
10375 | variable-size elements (identified by its XVS suffix) for which | |
10376 | the size can be read in the parallel XVZ variable. | |
10377 | ||
10378 | In the case of an array of an unconstrained element type, the compiler | |
10379 | wraps the array element inside a private PAD type. This type should not | |
10380 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
284614f0 JB |
10381 | that we also use the adjective "aligner" in our code to designate |
10382 | these wrapper types. | |
10383 | ||
1b536f04 | 10384 | In some cases, the size allocated for each element is statically |
21649b50 JB |
10385 | known. In that case, the PAD type already has the correct size, |
10386 | and the array element should remain unfixed. | |
10387 | ||
10388 | But there are cases when this size is not statically known. | |
10389 | For instance, assuming that "Five" is an integer variable: | |
284614f0 JB |
10390 | |
10391 | type Dynamic is array (1 .. Five) of Integer; | |
10392 | type Wrapper (Has_Length : Boolean := False) is record | |
10393 | Data : Dynamic; | |
10394 | case Has_Length is | |
10395 | when True => Length : Integer; | |
10396 | when False => null; | |
10397 | end case; | |
10398 | end record; | |
10399 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
10400 | ||
10401 | Hello : Wrapper_Array := (others => (Has_Length => True, | |
10402 | Data => (others => 17), | |
10403 | Length => 1)); | |
10404 | ||
10405 | ||
10406 | The debugging info would describe variable Hello as being an | |
10407 | array of a PAD type. The size of that PAD type is not statically | |
10408 | known, but can be determined using a parallel XVZ variable. | |
10409 | In that case, a copy of the PAD type with the correct size should | |
10410 | be used for the fixed array. | |
10411 | ||
21649b50 JB |
10412 | 3. ``Fixing'' record type objects: |
10413 | ---------------------------------- | |
10414 | ||
10415 | Things are slightly different from arrays in the case of dynamic | |
284614f0 JB |
10416 | record types. In this case, in order to compute the associated |
10417 | fixed type, we need to determine the size and offset of each of | |
10418 | its components. This, in turn, requires us to compute the fixed | |
10419 | type of each of these components. | |
10420 | ||
10421 | Consider for instance the example: | |
10422 | ||
10423 | type Bounded_String (Max_Size : Natural) is record | |
10424 | Str : String (1 .. Max_Size); | |
10425 | Length : Natural; | |
10426 | end record; | |
10427 | My_String : Bounded_String (Max_Size => 10); | |
10428 | ||
10429 | In that case, the position of field "Length" depends on the size | |
10430 | of field Str, which itself depends on the value of the Max_Size | |
21649b50 | 10431 | discriminant. In order to fix the type of variable My_String, |
284614f0 JB |
10432 | we need to fix the type of field Str. Therefore, fixing a variant |
10433 | record requires us to fix each of its components. | |
10434 | ||
10435 | However, if a component does not have a dynamic size, the component | |
10436 | should not be fixed. In particular, fields that use a PAD type | |
10437 | should not fixed. Here is an example where this might happen | |
10438 | (assuming type Rec above): | |
10439 | ||
10440 | type Container (Big : Boolean) is record | |
10441 | First : Rec; | |
10442 | After : Integer; | |
10443 | case Big is | |
10444 | when True => Another : Integer; | |
10445 | when False => null; | |
10446 | end case; | |
10447 | end record; | |
10448 | My_Container : Container := (Big => False, | |
10449 | First => (Empty => True), | |
10450 | After => 42); | |
10451 | ||
10452 | In that example, the compiler creates a PAD type for component First, | |
10453 | whose size is constant, and then positions the component After just | |
10454 | right after it. The offset of component After is therefore constant | |
10455 | in this case. | |
10456 | ||
10457 | The debugger computes the position of each field based on an algorithm | |
10458 | that uses, among other things, the actual position and size of the field | |
21649b50 JB |
10459 | preceding it. Let's now imagine that the user is trying to print |
10460 | the value of My_Container. If the type fixing was recursive, we would | |
284614f0 JB |
10461 | end up computing the offset of field After based on the size of the |
10462 | fixed version of field First. And since in our example First has | |
10463 | only one actual field, the size of the fixed type is actually smaller | |
10464 | than the amount of space allocated to that field, and thus we would | |
10465 | compute the wrong offset of field After. | |
10466 | ||
21649b50 JB |
10467 | To make things more complicated, we need to watch out for dynamic |
10468 | components of variant records (identified by the ___XVL suffix in | |
10469 | the component name). Even if the target type is a PAD type, the size | |
10470 | of that type might not be statically known. So the PAD type needs | |
10471 | to be unwrapped and the resulting type needs to be fixed. Otherwise, | |
10472 | we might end up with the wrong size for our component. This can be | |
10473 | observed with the following type declarations: | |
284614f0 JB |
10474 | |
10475 | type Octal is new Integer range 0 .. 7; | |
10476 | type Octal_Array is array (Positive range <>) of Octal; | |
10477 | pragma Pack (Octal_Array); | |
10478 | ||
10479 | type Octal_Buffer (Size : Positive) is record | |
10480 | Buffer : Octal_Array (1 .. Size); | |
10481 | Length : Integer; | |
10482 | end record; | |
10483 | ||
10484 | In that case, Buffer is a PAD type whose size is unset and needs | |
10485 | to be computed by fixing the unwrapped type. | |
10486 | ||
21649b50 JB |
10487 | 4. When to ``Fix'' un-``Fixed'' sub-elements of an entity: |
10488 | ---------------------------------------------------------- | |
10489 | ||
10490 | Lastly, when should the sub-elements of an entity that remained unfixed | |
284614f0 JB |
10491 | thus far, be actually fixed? |
10492 | ||
10493 | The answer is: Only when referencing that element. For instance | |
10494 | when selecting one component of a record, this specific component | |
10495 | should be fixed at that point in time. Or when printing the value | |
10496 | of a record, each component should be fixed before its value gets | |
10497 | printed. Similarly for arrays, the element of the array should be | |
10498 | fixed when printing each element of the array, or when extracting | |
10499 | one element out of that array. On the other hand, fixing should | |
10500 | not be performed on the elements when taking a slice of an array! | |
10501 | ||
31432a67 | 10502 | Note that one of the side effects of miscomputing the offset and |
284614f0 JB |
10503 | size of each field is that we end up also miscomputing the size |
10504 | of the containing type. This can have adverse results when computing | |
10505 | the value of an entity. GDB fetches the value of an entity based | |
10506 | on the size of its type, and thus a wrong size causes GDB to fetch | |
10507 | the wrong amount of memory. In the case where the computed size is | |
10508 | too small, GDB fetches too little data to print the value of our | |
31432a67 | 10509 | entity. Results in this case are unpredictable, as we usually read |
284614f0 JB |
10510 | past the buffer containing the data =:-o. */ |
10511 | ||
ced9779b JB |
10512 | /* Evaluate a subexpression of EXP, at index *POS, and return a value |
10513 | for that subexpression cast to TO_TYPE. Advance *POS over the | |
10514 | subexpression. */ | |
10515 | ||
10516 | static value * | |
10517 | ada_evaluate_subexp_for_cast (expression *exp, int *pos, | |
10518 | enum noside noside, struct type *to_type) | |
10519 | { | |
10520 | int pc = *pos; | |
10521 | ||
10522 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE | |
10523 | || exp->elts[pc].opcode == OP_VAR_VALUE) | |
10524 | { | |
10525 | (*pos) += 4; | |
10526 | ||
10527 | value *val; | |
10528 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE) | |
10529 | { | |
10530 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10531 | return value_zero (to_type, not_lval); | |
10532 | ||
10533 | val = evaluate_var_msym_value (noside, | |
10534 | exp->elts[pc + 1].objfile, | |
10535 | exp->elts[pc + 2].msymbol); | |
10536 | } | |
10537 | else | |
10538 | val = evaluate_var_value (noside, | |
10539 | exp->elts[pc + 1].block, | |
10540 | exp->elts[pc + 2].symbol); | |
10541 | ||
10542 | if (noside == EVAL_SKIP) | |
10543 | return eval_skip_value (exp); | |
10544 | ||
10545 | val = ada_value_cast (to_type, val); | |
10546 | ||
10547 | /* Follow the Ada language semantics that do not allow taking | |
10548 | an address of the result of a cast (view conversion in Ada). */ | |
10549 | if (VALUE_LVAL (val) == lval_memory) | |
10550 | { | |
10551 | if (value_lazy (val)) | |
10552 | value_fetch_lazy (val); | |
10553 | VALUE_LVAL (val) = not_lval; | |
10554 | } | |
10555 | return val; | |
10556 | } | |
10557 | ||
10558 | value *val = evaluate_subexp (to_type, exp, pos, noside); | |
10559 | if (noside == EVAL_SKIP) | |
10560 | return eval_skip_value (exp); | |
10561 | return ada_value_cast (to_type, val); | |
10562 | } | |
10563 | ||
284614f0 JB |
10564 | /* Implement the evaluate_exp routine in the exp_descriptor structure |
10565 | for the Ada language. */ | |
10566 | ||
52ce6436 | 10567 | static struct value * |
ebf56fd3 | 10568 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 10569 | int *pos, enum noside noside) |
14f9c5c9 AS |
10570 | { |
10571 | enum exp_opcode op; | |
b5385fc0 | 10572 | int tem; |
14f9c5c9 | 10573 | int pc; |
5ec18f2b | 10574 | int preeval_pos; |
14f9c5c9 AS |
10575 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; |
10576 | struct type *type; | |
52ce6436 | 10577 | int nargs, oplen; |
d2e4a39e | 10578 | struct value **argvec; |
14f9c5c9 | 10579 | |
d2e4a39e AS |
10580 | pc = *pos; |
10581 | *pos += 1; | |
14f9c5c9 AS |
10582 | op = exp->elts[pc].opcode; |
10583 | ||
d2e4a39e | 10584 | switch (op) |
14f9c5c9 AS |
10585 | { |
10586 | default: | |
10587 | *pos -= 1; | |
6e48bd2c | 10588 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
ca1f964d JG |
10589 | |
10590 | if (noside == EVAL_NORMAL) | |
10591 | arg1 = unwrap_value (arg1); | |
6e48bd2c | 10592 | |
edd079d9 | 10593 | /* If evaluating an OP_FLOAT and an EXPECT_TYPE was provided, |
6e48bd2c JB |
10594 | then we need to perform the conversion manually, because |
10595 | evaluate_subexp_standard doesn't do it. This conversion is | |
10596 | necessary in Ada because the different kinds of float/fixed | |
10597 | types in Ada have different representations. | |
10598 | ||
10599 | Similarly, we need to perform the conversion from OP_LONG | |
10600 | ourselves. */ | |
edd079d9 | 10601 | if ((op == OP_FLOAT || op == OP_LONG) && expect_type != NULL) |
b7e22850 | 10602 | arg1 = ada_value_cast (expect_type, arg1); |
6e48bd2c JB |
10603 | |
10604 | return arg1; | |
4c4b4cd2 PH |
10605 | |
10606 | case OP_STRING: | |
10607 | { | |
76a01679 | 10608 | struct value *result; |
5b4ee69b | 10609 | |
76a01679 JB |
10610 | *pos -= 1; |
10611 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10612 | /* The result type will have code OP_STRING, bashed there from | |
10613 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
10614 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
10615 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 10616 | return result; |
4c4b4cd2 | 10617 | } |
14f9c5c9 AS |
10618 | |
10619 | case UNOP_CAST: | |
10620 | (*pos) += 2; | |
10621 | type = exp->elts[pc + 1].type; | |
ced9779b | 10622 | return ada_evaluate_subexp_for_cast (exp, pos, noside, type); |
14f9c5c9 | 10623 | |
4c4b4cd2 PH |
10624 | case UNOP_QUAL: |
10625 | (*pos) += 2; | |
10626 | type = exp->elts[pc + 1].type; | |
10627 | return ada_evaluate_subexp (type, exp, pos, noside); | |
10628 | ||
14f9c5c9 AS |
10629 | case BINOP_ASSIGN: |
10630 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
10631 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
10632 | { | |
10633 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
10634 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
10635 | return arg1; | |
10636 | return ada_value_assign (arg1, arg1); | |
10637 | } | |
003f3813 JB |
10638 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
10639 | except if the lhs of our assignment is a convenience variable. | |
10640 | In the case of assigning to a convenience variable, the lhs | |
10641 | should be exactly the result of the evaluation of the rhs. */ | |
10642 | type = value_type (arg1); | |
10643 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
10644 | type = NULL; | |
10645 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 10646 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 10647 | return arg1; |
df407dfe AC |
10648 | if (ada_is_fixed_point_type (value_type (arg1))) |
10649 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
10650 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 10651 | error |
323e0a4a | 10652 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 10653 | else |
df407dfe | 10654 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 10655 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
10656 | |
10657 | case BINOP_ADD: | |
10658 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10659 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10660 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10661 | goto nosideret; |
2ac8a782 JB |
10662 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
10663 | return (value_from_longest | |
10664 | (value_type (arg1), | |
10665 | value_as_long (arg1) + value_as_long (arg2))); | |
c40cc657 JB |
10666 | if (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR) |
10667 | return (value_from_longest | |
10668 | (value_type (arg2), | |
10669 | value_as_long (arg1) + value_as_long (arg2))); | |
df407dfe AC |
10670 | if ((ada_is_fixed_point_type (value_type (arg1)) |
10671 | || ada_is_fixed_point_type (value_type (arg2))) | |
10672 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 10673 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
10674 | /* Do the addition, and cast the result to the type of the first |
10675 | argument. We cannot cast the result to a reference type, so if | |
10676 | ARG1 is a reference type, find its underlying type. */ | |
10677 | type = value_type (arg1); | |
10678 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
10679 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 10680 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 10681 | return value_cast (type, value_binop (arg1, arg2, BINOP_ADD)); |
14f9c5c9 AS |
10682 | |
10683 | case BINOP_SUB: | |
10684 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10685 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10686 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10687 | goto nosideret; |
2ac8a782 JB |
10688 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
10689 | return (value_from_longest | |
10690 | (value_type (arg1), | |
10691 | value_as_long (arg1) - value_as_long (arg2))); | |
c40cc657 JB |
10692 | if (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR) |
10693 | return (value_from_longest | |
10694 | (value_type (arg2), | |
10695 | value_as_long (arg1) - value_as_long (arg2))); | |
df407dfe AC |
10696 | if ((ada_is_fixed_point_type (value_type (arg1)) |
10697 | || ada_is_fixed_point_type (value_type (arg2))) | |
10698 | && value_type (arg1) != value_type (arg2)) | |
0963b4bd MS |
10699 | error (_("Operands of fixed-point subtraction " |
10700 | "must have the same type")); | |
b7789565 JB |
10701 | /* Do the substraction, and cast the result to the type of the first |
10702 | argument. We cannot cast the result to a reference type, so if | |
10703 | ARG1 is a reference type, find its underlying type. */ | |
10704 | type = value_type (arg1); | |
10705 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
10706 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 10707 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 10708 | return value_cast (type, value_binop (arg1, arg2, BINOP_SUB)); |
14f9c5c9 AS |
10709 | |
10710 | case BINOP_MUL: | |
10711 | case BINOP_DIV: | |
e1578042 JB |
10712 | case BINOP_REM: |
10713 | case BINOP_MOD: | |
14f9c5c9 AS |
10714 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
10715 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10716 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10717 | goto nosideret; |
e1578042 | 10718 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9c2be529 JB |
10719 | { |
10720 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10721 | return value_zero (value_type (arg1), not_lval); | |
10722 | } | |
14f9c5c9 | 10723 | else |
4c4b4cd2 | 10724 | { |
a53b7a21 | 10725 | type = builtin_type (exp->gdbarch)->builtin_double; |
df407dfe | 10726 | if (ada_is_fixed_point_type (value_type (arg1))) |
a53b7a21 | 10727 | arg1 = cast_from_fixed (type, arg1); |
df407dfe | 10728 | if (ada_is_fixed_point_type (value_type (arg2))) |
a53b7a21 | 10729 | arg2 = cast_from_fixed (type, arg2); |
f44316fa | 10730 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
4c4b4cd2 PH |
10731 | return ada_value_binop (arg1, arg2, op); |
10732 | } | |
10733 | ||
4c4b4cd2 PH |
10734 | case BINOP_EQUAL: |
10735 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 10736 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 10737 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 10738 | if (noside == EVAL_SKIP) |
76a01679 | 10739 | goto nosideret; |
4c4b4cd2 | 10740 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 10741 | tem = 0; |
4c4b4cd2 | 10742 | else |
f44316fa UW |
10743 | { |
10744 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10745 | tem = ada_value_equal (arg1, arg2); | |
10746 | } | |
4c4b4cd2 | 10747 | if (op == BINOP_NOTEQUAL) |
76a01679 | 10748 | tem = !tem; |
fbb06eb1 UW |
10749 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10750 | return value_from_longest (type, (LONGEST) tem); | |
4c4b4cd2 PH |
10751 | |
10752 | case UNOP_NEG: | |
10753 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10754 | if (noside == EVAL_SKIP) | |
10755 | goto nosideret; | |
df407dfe AC |
10756 | else if (ada_is_fixed_point_type (value_type (arg1))) |
10757 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 10758 | else |
f44316fa UW |
10759 | { |
10760 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10761 | return value_neg (arg1); | |
10762 | } | |
4c4b4cd2 | 10763 | |
2330c6c6 JB |
10764 | case BINOP_LOGICAL_AND: |
10765 | case BINOP_LOGICAL_OR: | |
10766 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
10767 | { |
10768 | struct value *val; | |
10769 | ||
10770 | *pos -= 1; | |
10771 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
fbb06eb1 UW |
10772 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10773 | return value_cast (type, val); | |
000d5124 | 10774 | } |
2330c6c6 JB |
10775 | |
10776 | case BINOP_BITWISE_AND: | |
10777 | case BINOP_BITWISE_IOR: | |
10778 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
10779 | { |
10780 | struct value *val; | |
10781 | ||
10782 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
10783 | *pos = pc; | |
10784 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10785 | ||
10786 | return value_cast (value_type (arg1), val); | |
10787 | } | |
2330c6c6 | 10788 | |
14f9c5c9 AS |
10789 | case OP_VAR_VALUE: |
10790 | *pos -= 1; | |
6799def4 | 10791 | |
14f9c5c9 | 10792 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
10793 | { |
10794 | *pos += 4; | |
10795 | goto nosideret; | |
10796 | } | |
da5c522f JB |
10797 | |
10798 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
10799 | /* Only encountered when an unresolved symbol occurs in a |
10800 | context other than a function call, in which case, it is | |
52ce6436 | 10801 | invalid. */ |
323e0a4a | 10802 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 10803 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
da5c522f JB |
10804 | |
10805 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
4c4b4cd2 | 10806 | { |
0c1f74cf | 10807 | type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
31dbc1c5 JB |
10808 | /* Check to see if this is a tagged type. We also need to handle |
10809 | the case where the type is a reference to a tagged type, but | |
10810 | we have to be careful to exclude pointers to tagged types. | |
10811 | The latter should be shown as usual (as a pointer), whereas | |
10812 | a reference should mostly be transparent to the user. */ | |
10813 | if (ada_is_tagged_type (type, 0) | |
023db19c | 10814 | || (TYPE_CODE (type) == TYPE_CODE_REF |
31dbc1c5 | 10815 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0))) |
0d72a7c3 JB |
10816 | { |
10817 | /* Tagged types are a little special in the fact that the real | |
10818 | type is dynamic and can only be determined by inspecting the | |
10819 | object's tag. This means that we need to get the object's | |
10820 | value first (EVAL_NORMAL) and then extract the actual object | |
10821 | type from its tag. | |
10822 | ||
10823 | Note that we cannot skip the final step where we extract | |
10824 | the object type from its tag, because the EVAL_NORMAL phase | |
10825 | results in dynamic components being resolved into fixed ones. | |
10826 | This can cause problems when trying to print the type | |
10827 | description of tagged types whose parent has a dynamic size: | |
10828 | We use the type name of the "_parent" component in order | |
10829 | to print the name of the ancestor type in the type description. | |
10830 | If that component had a dynamic size, the resolution into | |
10831 | a fixed type would result in the loss of that type name, | |
10832 | thus preventing us from printing the name of the ancestor | |
10833 | type in the type description. */ | |
10834 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL); | |
10835 | ||
10836 | if (TYPE_CODE (type) != TYPE_CODE_REF) | |
10837 | { | |
10838 | struct type *actual_type; | |
10839 | ||
10840 | actual_type = type_from_tag (ada_value_tag (arg1)); | |
10841 | if (actual_type == NULL) | |
10842 | /* If, for some reason, we were unable to determine | |
10843 | the actual type from the tag, then use the static | |
10844 | approximation that we just computed as a fallback. | |
10845 | This can happen if the debugging information is | |
10846 | incomplete, for instance. */ | |
10847 | actual_type = type; | |
10848 | return value_zero (actual_type, not_lval); | |
10849 | } | |
10850 | else | |
10851 | { | |
10852 | /* In the case of a ref, ada_coerce_ref takes care | |
10853 | of determining the actual type. But the evaluation | |
10854 | should return a ref as it should be valid to ask | |
10855 | for its address; so rebuild a ref after coerce. */ | |
10856 | arg1 = ada_coerce_ref (arg1); | |
a65cfae5 | 10857 | return value_ref (arg1, TYPE_CODE_REF); |
0d72a7c3 JB |
10858 | } |
10859 | } | |
0c1f74cf | 10860 | |
84754697 JB |
10861 | /* Records and unions for which GNAT encodings have been |
10862 | generated need to be statically fixed as well. | |
10863 | Otherwise, non-static fixing produces a type where | |
10864 | all dynamic properties are removed, which prevents "ptype" | |
10865 | from being able to completely describe the type. | |
10866 | For instance, a case statement in a variant record would be | |
10867 | replaced by the relevant components based on the actual | |
10868 | value of the discriminants. */ | |
10869 | if ((TYPE_CODE (type) == TYPE_CODE_STRUCT | |
10870 | && dynamic_template_type (type) != NULL) | |
10871 | || (TYPE_CODE (type) == TYPE_CODE_UNION | |
10872 | && ada_find_parallel_type (type, "___XVU") != NULL)) | |
10873 | { | |
10874 | *pos += 4; | |
10875 | return value_zero (to_static_fixed_type (type), not_lval); | |
10876 | } | |
4c4b4cd2 | 10877 | } |
da5c522f JB |
10878 | |
10879 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10880 | return ada_to_fixed_value (arg1); | |
4c4b4cd2 PH |
10881 | |
10882 | case OP_FUNCALL: | |
10883 | (*pos) += 2; | |
10884 | ||
10885 | /* Allocate arg vector, including space for the function to be | |
10886 | called in argvec[0] and a terminating NULL. */ | |
10887 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8d749320 | 10888 | argvec = XALLOCAVEC (struct value *, nargs + 2); |
4c4b4cd2 PH |
10889 | |
10890 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 10891 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 10892 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
10893 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
10894 | else | |
10895 | { | |
10896 | for (tem = 0; tem <= nargs; tem += 1) | |
10897 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10898 | argvec[tem] = 0; | |
10899 | ||
10900 | if (noside == EVAL_SKIP) | |
10901 | goto nosideret; | |
10902 | } | |
10903 | ||
ad82864c JB |
10904 | if (ada_is_constrained_packed_array_type |
10905 | (desc_base_type (value_type (argvec[0])))) | |
4c4b4cd2 | 10906 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
284614f0 JB |
10907 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY |
10908 | && TYPE_FIELD_BITSIZE (value_type (argvec[0]), 0) != 0) | |
10909 | /* This is a packed array that has already been fixed, and | |
10910 | therefore already coerced to a simple array. Nothing further | |
10911 | to do. */ | |
10912 | ; | |
e6c2c623 PMR |
10913 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF) |
10914 | { | |
10915 | /* Make sure we dereference references so that all the code below | |
10916 | feels like it's really handling the referenced value. Wrapping | |
10917 | types (for alignment) may be there, so make sure we strip them as | |
10918 | well. */ | |
10919 | argvec[0] = ada_to_fixed_value (coerce_ref (argvec[0])); | |
10920 | } | |
10921 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
10922 | && VALUE_LVAL (argvec[0]) == lval_memory) | |
10923 | argvec[0] = value_addr (argvec[0]); | |
4c4b4cd2 | 10924 | |
df407dfe | 10925 | type = ada_check_typedef (value_type (argvec[0])); |
720d1a40 JB |
10926 | |
10927 | /* Ada allows us to implicitly dereference arrays when subscripting | |
8f465ea7 JB |
10928 | them. So, if this is an array typedef (encoding use for array |
10929 | access types encoded as fat pointers), strip it now. */ | |
720d1a40 JB |
10930 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
10931 | type = ada_typedef_target_type (type); | |
10932 | ||
4c4b4cd2 PH |
10933 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
10934 | { | |
61ee279c | 10935 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
10936 | { |
10937 | case TYPE_CODE_FUNC: | |
61ee279c | 10938 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
10939 | break; |
10940 | case TYPE_CODE_ARRAY: | |
10941 | break; | |
10942 | case TYPE_CODE_STRUCT: | |
10943 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
10944 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 10945 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
10946 | break; |
10947 | default: | |
323e0a4a | 10948 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 10949 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
10950 | break; |
10951 | } | |
10952 | } | |
10953 | ||
10954 | switch (TYPE_CODE (type)) | |
10955 | { | |
10956 | case TYPE_CODE_FUNC: | |
10957 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
c8ea1972 | 10958 | { |
7022349d PA |
10959 | if (TYPE_TARGET_TYPE (type) == NULL) |
10960 | error_call_unknown_return_type (NULL); | |
10961 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
c8ea1972 | 10962 | } |
e71585ff PA |
10963 | return call_function_by_hand (argvec[0], NULL, |
10964 | gdb::make_array_view (argvec + 1, | |
10965 | nargs)); | |
c8ea1972 PH |
10966 | case TYPE_CODE_INTERNAL_FUNCTION: |
10967 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10968 | /* We don't know anything about what the internal | |
10969 | function might return, but we have to return | |
10970 | something. */ | |
10971 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
10972 | not_lval); | |
10973 | else | |
10974 | return call_internal_function (exp->gdbarch, exp->language_defn, | |
10975 | argvec[0], nargs, argvec + 1); | |
10976 | ||
4c4b4cd2 PH |
10977 | case TYPE_CODE_STRUCT: |
10978 | { | |
10979 | int arity; | |
10980 | ||
4c4b4cd2 PH |
10981 | arity = ada_array_arity (type); |
10982 | type = ada_array_element_type (type, nargs); | |
10983 | if (type == NULL) | |
323e0a4a | 10984 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 10985 | if (arity != nargs) |
323e0a4a | 10986 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 10987 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 10988 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
10989 | return |
10990 | unwrap_value (ada_value_subscript | |
10991 | (argvec[0], nargs, argvec + 1)); | |
10992 | } | |
10993 | case TYPE_CODE_ARRAY: | |
10994 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10995 | { | |
10996 | type = ada_array_element_type (type, nargs); | |
10997 | if (type == NULL) | |
323e0a4a | 10998 | error (_("element type of array unknown")); |
4c4b4cd2 | 10999 | else |
0a07e705 | 11000 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
11001 | } |
11002 | return | |
11003 | unwrap_value (ada_value_subscript | |
11004 | (ada_coerce_to_simple_array (argvec[0]), | |
11005 | nargs, argvec + 1)); | |
11006 | case TYPE_CODE_PTR: /* Pointer to array */ | |
4c4b4cd2 PH |
11007 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
11008 | { | |
deede10c | 11009 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); |
4c4b4cd2 PH |
11010 | type = ada_array_element_type (type, nargs); |
11011 | if (type == NULL) | |
323e0a4a | 11012 | error (_("element type of array unknown")); |
4c4b4cd2 | 11013 | else |
0a07e705 | 11014 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
11015 | } |
11016 | return | |
deede10c JB |
11017 | unwrap_value (ada_value_ptr_subscript (argvec[0], |
11018 | nargs, argvec + 1)); | |
4c4b4cd2 PH |
11019 | |
11020 | default: | |
e1d5a0d2 PH |
11021 | error (_("Attempt to index or call something other than an " |
11022 | "array or function")); | |
4c4b4cd2 PH |
11023 | } |
11024 | ||
11025 | case TERNOP_SLICE: | |
11026 | { | |
11027 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11028 | struct value *low_bound_val = | |
11029 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
11030 | struct value *high_bound_val = |
11031 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11032 | LONGEST low_bound; | |
11033 | LONGEST high_bound; | |
5b4ee69b | 11034 | |
994b9211 AC |
11035 | low_bound_val = coerce_ref (low_bound_val); |
11036 | high_bound_val = coerce_ref (high_bound_val); | |
aa715135 JG |
11037 | low_bound = value_as_long (low_bound_val); |
11038 | high_bound = value_as_long (high_bound_val); | |
963a6417 | 11039 | |
4c4b4cd2 PH |
11040 | if (noside == EVAL_SKIP) |
11041 | goto nosideret; | |
11042 | ||
4c4b4cd2 PH |
11043 | /* If this is a reference to an aligner type, then remove all |
11044 | the aligners. */ | |
df407dfe AC |
11045 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
11046 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
11047 | TYPE_TARGET_TYPE (value_type (array)) = | |
11048 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 11049 | |
ad82864c | 11050 | if (ada_is_constrained_packed_array_type (value_type (array))) |
323e0a4a | 11051 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
11052 | |
11053 | /* If this is a reference to an array or an array lvalue, | |
11054 | convert to a pointer. */ | |
df407dfe AC |
11055 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
11056 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
11057 | && VALUE_LVAL (array) == lval_memory)) |
11058 | array = value_addr (array); | |
11059 | ||
1265e4aa | 11060 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 11061 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 11062 | (value_type (array)))) |
bff8c71f TT |
11063 | return empty_array (ada_type_of_array (array, 0), low_bound, |
11064 | high_bound); | |
4c4b4cd2 PH |
11065 | |
11066 | array = ada_coerce_to_simple_array_ptr (array); | |
11067 | ||
714e53ab PH |
11068 | /* If we have more than one level of pointer indirection, |
11069 | dereference the value until we get only one level. */ | |
df407dfe AC |
11070 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
11071 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
11072 | == TYPE_CODE_PTR)) |
11073 | array = value_ind (array); | |
11074 | ||
11075 | /* Make sure we really do have an array type before going further, | |
11076 | to avoid a SEGV when trying to get the index type or the target | |
11077 | type later down the road if the debug info generated by | |
11078 | the compiler is incorrect or incomplete. */ | |
df407dfe | 11079 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 11080 | error (_("cannot take slice of non-array")); |
714e53ab | 11081 | |
828292f2 JB |
11082 | if (TYPE_CODE (ada_check_typedef (value_type (array))) |
11083 | == TYPE_CODE_PTR) | |
4c4b4cd2 | 11084 | { |
828292f2 JB |
11085 | struct type *type0 = ada_check_typedef (value_type (array)); |
11086 | ||
0b5d8877 | 11087 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
bff8c71f | 11088 | return empty_array (TYPE_TARGET_TYPE (type0), low_bound, high_bound); |
4c4b4cd2 PH |
11089 | else |
11090 | { | |
11091 | struct type *arr_type0 = | |
828292f2 | 11092 | to_fixed_array_type (TYPE_TARGET_TYPE (type0), NULL, 1); |
5b4ee69b | 11093 | |
f5938064 JG |
11094 | return ada_value_slice_from_ptr (array, arr_type0, |
11095 | longest_to_int (low_bound), | |
11096 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
11097 | } |
11098 | } | |
11099 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11100 | return array; | |
11101 | else if (high_bound < low_bound) | |
bff8c71f | 11102 | return empty_array (value_type (array), low_bound, high_bound); |
4c4b4cd2 | 11103 | else |
529cad9c PH |
11104 | return ada_value_slice (array, longest_to_int (low_bound), |
11105 | longest_to_int (high_bound)); | |
4c4b4cd2 | 11106 | } |
14f9c5c9 | 11107 | |
4c4b4cd2 PH |
11108 | case UNOP_IN_RANGE: |
11109 | (*pos) += 2; | |
11110 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8008e265 | 11111 | type = check_typedef (exp->elts[pc + 1].type); |
14f9c5c9 | 11112 | |
14f9c5c9 | 11113 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 11114 | goto nosideret; |
14f9c5c9 | 11115 | |
4c4b4cd2 PH |
11116 | switch (TYPE_CODE (type)) |
11117 | { | |
11118 | default: | |
e1d5a0d2 PH |
11119 | lim_warning (_("Membership test incompletely implemented; " |
11120 | "always returns true")); | |
fbb06eb1 UW |
11121 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
11122 | return value_from_longest (type, (LONGEST) 1); | |
4c4b4cd2 PH |
11123 | |
11124 | case TYPE_CODE_RANGE: | |
030b4912 UW |
11125 | arg2 = value_from_longest (type, TYPE_LOW_BOUND (type)); |
11126 | arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type)); | |
f44316fa UW |
11127 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11128 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 UW |
11129 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
11130 | return | |
11131 | value_from_longest (type, | |
4c4b4cd2 PH |
11132 | (value_less (arg1, arg3) |
11133 | || value_equal (arg1, arg3)) | |
11134 | && (value_less (arg2, arg1) | |
11135 | || value_equal (arg2, arg1))); | |
11136 | } | |
11137 | ||
11138 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 11139 | (*pos) += 2; |
4c4b4cd2 PH |
11140 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11141 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 11142 | |
4c4b4cd2 PH |
11143 | if (noside == EVAL_SKIP) |
11144 | goto nosideret; | |
14f9c5c9 | 11145 | |
4c4b4cd2 | 11146 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
fbb06eb1 UW |
11147 | { |
11148 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
11149 | return value_zero (type, not_lval); | |
11150 | } | |
14f9c5c9 | 11151 | |
4c4b4cd2 | 11152 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 11153 | |
1eea4ebd UW |
11154 | type = ada_index_type (value_type (arg2), tem, "range"); |
11155 | if (!type) | |
11156 | type = value_type (arg1); | |
14f9c5c9 | 11157 | |
1eea4ebd UW |
11158 | arg3 = value_from_longest (type, ada_array_bound (arg2, tem, 1)); |
11159 | arg2 = value_from_longest (type, ada_array_bound (arg2, tem, 0)); | |
d2e4a39e | 11160 | |
f44316fa UW |
11161 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11162 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 11163 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 11164 | return |
fbb06eb1 | 11165 | value_from_longest (type, |
4c4b4cd2 PH |
11166 | (value_less (arg1, arg3) |
11167 | || value_equal (arg1, arg3)) | |
11168 | && (value_less (arg2, arg1) | |
11169 | || value_equal (arg2, arg1))); | |
11170 | ||
11171 | case TERNOP_IN_RANGE: | |
11172 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11173 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11174 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11175 | ||
11176 | if (noside == EVAL_SKIP) | |
11177 | goto nosideret; | |
11178 | ||
f44316fa UW |
11179 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11180 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 11181 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 11182 | return |
fbb06eb1 | 11183 | value_from_longest (type, |
4c4b4cd2 PH |
11184 | (value_less (arg1, arg3) |
11185 | || value_equal (arg1, arg3)) | |
11186 | && (value_less (arg2, arg1) | |
11187 | || value_equal (arg2, arg1))); | |
11188 | ||
11189 | case OP_ATR_FIRST: | |
11190 | case OP_ATR_LAST: | |
11191 | case OP_ATR_LENGTH: | |
11192 | { | |
76a01679 | 11193 | struct type *type_arg; |
5b4ee69b | 11194 | |
76a01679 JB |
11195 | if (exp->elts[*pos].opcode == OP_TYPE) |
11196 | { | |
11197 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
11198 | arg1 = NULL; | |
5bc23cb3 | 11199 | type_arg = check_typedef (exp->elts[pc + 2].type); |
76a01679 JB |
11200 | } |
11201 | else | |
11202 | { | |
11203 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11204 | type_arg = NULL; | |
11205 | } | |
11206 | ||
11207 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 11208 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
11209 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
11210 | *pos += 4; | |
11211 | ||
11212 | if (noside == EVAL_SKIP) | |
11213 | goto nosideret; | |
11214 | ||
11215 | if (type_arg == NULL) | |
11216 | { | |
11217 | arg1 = ada_coerce_ref (arg1); | |
11218 | ||
ad82864c | 11219 | if (ada_is_constrained_packed_array_type (value_type (arg1))) |
76a01679 JB |
11220 | arg1 = ada_coerce_to_simple_array (arg1); |
11221 | ||
aa4fb036 | 11222 | if (op == OP_ATR_LENGTH) |
1eea4ebd | 11223 | type = builtin_type (exp->gdbarch)->builtin_int; |
aa4fb036 JB |
11224 | else |
11225 | { | |
11226 | type = ada_index_type (value_type (arg1), tem, | |
11227 | ada_attribute_name (op)); | |
11228 | if (type == NULL) | |
11229 | type = builtin_type (exp->gdbarch)->builtin_int; | |
11230 | } | |
76a01679 JB |
11231 | |
11232 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1eea4ebd | 11233 | return allocate_value (type); |
76a01679 JB |
11234 | |
11235 | switch (op) | |
11236 | { | |
11237 | default: /* Should never happen. */ | |
323e0a4a | 11238 | error (_("unexpected attribute encountered")); |
76a01679 | 11239 | case OP_ATR_FIRST: |
1eea4ebd UW |
11240 | return value_from_longest |
11241 | (type, ada_array_bound (arg1, tem, 0)); | |
76a01679 | 11242 | case OP_ATR_LAST: |
1eea4ebd UW |
11243 | return value_from_longest |
11244 | (type, ada_array_bound (arg1, tem, 1)); | |
76a01679 | 11245 | case OP_ATR_LENGTH: |
1eea4ebd UW |
11246 | return value_from_longest |
11247 | (type, ada_array_length (arg1, tem)); | |
76a01679 JB |
11248 | } |
11249 | } | |
11250 | else if (discrete_type_p (type_arg)) | |
11251 | { | |
11252 | struct type *range_type; | |
0d5cff50 | 11253 | const char *name = ada_type_name (type_arg); |
5b4ee69b | 11254 | |
76a01679 JB |
11255 | range_type = NULL; |
11256 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
28c85d6c | 11257 | range_type = to_fixed_range_type (type_arg, NULL); |
76a01679 JB |
11258 | if (range_type == NULL) |
11259 | range_type = type_arg; | |
11260 | switch (op) | |
11261 | { | |
11262 | default: | |
323e0a4a | 11263 | error (_("unexpected attribute encountered")); |
76a01679 | 11264 | case OP_ATR_FIRST: |
690cc4eb | 11265 | return value_from_longest |
43bbcdc2 | 11266 | (range_type, ada_discrete_type_low_bound (range_type)); |
76a01679 | 11267 | case OP_ATR_LAST: |
690cc4eb | 11268 | return value_from_longest |
43bbcdc2 | 11269 | (range_type, ada_discrete_type_high_bound (range_type)); |
76a01679 | 11270 | case OP_ATR_LENGTH: |
323e0a4a | 11271 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
11272 | } |
11273 | } | |
11274 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 11275 | error (_("unimplemented type attribute")); |
76a01679 JB |
11276 | else |
11277 | { | |
11278 | LONGEST low, high; | |
11279 | ||
ad82864c JB |
11280 | if (ada_is_constrained_packed_array_type (type_arg)) |
11281 | type_arg = decode_constrained_packed_array_type (type_arg); | |
76a01679 | 11282 | |
aa4fb036 | 11283 | if (op == OP_ATR_LENGTH) |
1eea4ebd | 11284 | type = builtin_type (exp->gdbarch)->builtin_int; |
aa4fb036 JB |
11285 | else |
11286 | { | |
11287 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); | |
11288 | if (type == NULL) | |
11289 | type = builtin_type (exp->gdbarch)->builtin_int; | |
11290 | } | |
1eea4ebd | 11291 | |
76a01679 JB |
11292 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
11293 | return allocate_value (type); | |
11294 | ||
11295 | switch (op) | |
11296 | { | |
11297 | default: | |
323e0a4a | 11298 | error (_("unexpected attribute encountered")); |
76a01679 | 11299 | case OP_ATR_FIRST: |
1eea4ebd | 11300 | low = ada_array_bound_from_type (type_arg, tem, 0); |
76a01679 JB |
11301 | return value_from_longest (type, low); |
11302 | case OP_ATR_LAST: | |
1eea4ebd | 11303 | high = ada_array_bound_from_type (type_arg, tem, 1); |
76a01679 JB |
11304 | return value_from_longest (type, high); |
11305 | case OP_ATR_LENGTH: | |
1eea4ebd UW |
11306 | low = ada_array_bound_from_type (type_arg, tem, 0); |
11307 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
76a01679 JB |
11308 | return value_from_longest (type, high - low + 1); |
11309 | } | |
11310 | } | |
14f9c5c9 AS |
11311 | } |
11312 | ||
4c4b4cd2 PH |
11313 | case OP_ATR_TAG: |
11314 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11315 | if (noside == EVAL_SKIP) | |
76a01679 | 11316 | goto nosideret; |
4c4b4cd2 PH |
11317 | |
11318 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 11319 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
11320 | |
11321 | return ada_value_tag (arg1); | |
11322 | ||
11323 | case OP_ATR_MIN: | |
11324 | case OP_ATR_MAX: | |
11325 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
11326 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11327 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11328 | if (noside == EVAL_SKIP) | |
76a01679 | 11329 | goto nosideret; |
d2e4a39e | 11330 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 11331 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 11332 | else |
f44316fa UW |
11333 | { |
11334 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
11335 | return value_binop (arg1, arg2, | |
11336 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
11337 | } | |
14f9c5c9 | 11338 | |
4c4b4cd2 PH |
11339 | case OP_ATR_MODULUS: |
11340 | { | |
31dedfee | 11341 | struct type *type_arg = check_typedef (exp->elts[pc + 2].type); |
4c4b4cd2 | 11342 | |
5b4ee69b | 11343 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
76a01679 JB |
11344 | if (noside == EVAL_SKIP) |
11345 | goto nosideret; | |
4c4b4cd2 | 11346 | |
76a01679 | 11347 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 11348 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 11349 | |
76a01679 JB |
11350 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
11351 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
11352 | } |
11353 | ||
11354 | ||
11355 | case OP_ATR_POS: | |
11356 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
11357 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11358 | if (noside == EVAL_SKIP) | |
76a01679 | 11359 | goto nosideret; |
3cb382c9 UW |
11360 | type = builtin_type (exp->gdbarch)->builtin_int; |
11361 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11362 | return value_zero (type, not_lval); | |
14f9c5c9 | 11363 | else |
3cb382c9 | 11364 | return value_pos_atr (type, arg1); |
14f9c5c9 | 11365 | |
4c4b4cd2 PH |
11366 | case OP_ATR_SIZE: |
11367 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8c1c099f JB |
11368 | type = value_type (arg1); |
11369 | ||
11370 | /* If the argument is a reference, then dereference its type, since | |
11371 | the user is really asking for the size of the actual object, | |
11372 | not the size of the pointer. */ | |
11373 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
11374 | type = TYPE_TARGET_TYPE (type); | |
11375 | ||
4c4b4cd2 | 11376 | if (noside == EVAL_SKIP) |
76a01679 | 11377 | goto nosideret; |
4c4b4cd2 | 11378 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
22601c15 | 11379 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
4c4b4cd2 | 11380 | else |
22601c15 | 11381 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
8c1c099f | 11382 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); |
4c4b4cd2 PH |
11383 | |
11384 | case OP_ATR_VAL: | |
11385 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 11386 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 11387 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 11388 | if (noside == EVAL_SKIP) |
76a01679 | 11389 | goto nosideret; |
4c4b4cd2 | 11390 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 11391 | return value_zero (type, not_lval); |
4c4b4cd2 | 11392 | else |
76a01679 | 11393 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
11394 | |
11395 | case BINOP_EXP: | |
11396 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11397 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11398 | if (noside == EVAL_SKIP) | |
11399 | goto nosideret; | |
11400 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 11401 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 | 11402 | else |
f44316fa UW |
11403 | { |
11404 | /* For integer exponentiation operations, | |
11405 | only promote the first argument. */ | |
11406 | if (is_integral_type (value_type (arg2))) | |
11407 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
11408 | else | |
11409 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
11410 | ||
11411 | return value_binop (arg1, arg2, op); | |
11412 | } | |
4c4b4cd2 PH |
11413 | |
11414 | case UNOP_PLUS: | |
11415 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11416 | if (noside == EVAL_SKIP) | |
11417 | goto nosideret; | |
11418 | else | |
11419 | return arg1; | |
11420 | ||
11421 | case UNOP_ABS: | |
11422 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11423 | if (noside == EVAL_SKIP) | |
11424 | goto nosideret; | |
f44316fa | 11425 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
df407dfe | 11426 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 11427 | return value_neg (arg1); |
14f9c5c9 | 11428 | else |
4c4b4cd2 | 11429 | return arg1; |
14f9c5c9 AS |
11430 | |
11431 | case UNOP_IND: | |
5ec18f2b | 11432 | preeval_pos = *pos; |
6b0d7253 | 11433 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
14f9c5c9 | 11434 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 11435 | goto nosideret; |
df407dfe | 11436 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 11437 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
11438 | { |
11439 | if (ada_is_array_descriptor_type (type)) | |
11440 | /* GDB allows dereferencing GNAT array descriptors. */ | |
11441 | { | |
11442 | struct type *arrType = ada_type_of_array (arg1, 0); | |
5b4ee69b | 11443 | |
4c4b4cd2 | 11444 | if (arrType == NULL) |
323e0a4a | 11445 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 11446 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
11447 | } |
11448 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
11449 | || TYPE_CODE (type) == TYPE_CODE_REF | |
11450 | /* In C you can dereference an array to get the 1st elt. */ | |
11451 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab | 11452 | { |
5ec18f2b JG |
11453 | /* As mentioned in the OP_VAR_VALUE case, tagged types can |
11454 | only be determined by inspecting the object's tag. | |
11455 | This means that we need to evaluate completely the | |
11456 | expression in order to get its type. */ | |
11457 | ||
023db19c JB |
11458 | if ((TYPE_CODE (type) == TYPE_CODE_REF |
11459 | || TYPE_CODE (type) == TYPE_CODE_PTR) | |
5ec18f2b JG |
11460 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0)) |
11461 | { | |
11462 | arg1 = evaluate_subexp (NULL_TYPE, exp, &preeval_pos, | |
11463 | EVAL_NORMAL); | |
11464 | type = value_type (ada_value_ind (arg1)); | |
11465 | } | |
11466 | else | |
11467 | { | |
11468 | type = to_static_fixed_type | |
11469 | (ada_aligned_type | |
11470 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
11471 | } | |
c1b5a1a6 | 11472 | ada_ensure_varsize_limit (type); |
714e53ab PH |
11473 | return value_zero (type, lval_memory); |
11474 | } | |
4c4b4cd2 | 11475 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
6b0d7253 JB |
11476 | { |
11477 | /* GDB allows dereferencing an int. */ | |
11478 | if (expect_type == NULL) | |
11479 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
11480 | lval_memory); | |
11481 | else | |
11482 | { | |
11483 | expect_type = | |
11484 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
11485 | return value_zero (expect_type, lval_memory); | |
11486 | } | |
11487 | } | |
4c4b4cd2 | 11488 | else |
323e0a4a | 11489 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 11490 | } |
0963b4bd | 11491 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 11492 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 11493 | |
96967637 JB |
11494 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
11495 | /* GDB allows dereferencing an int. If we were given | |
11496 | the expect_type, then use that as the target type. | |
11497 | Otherwise, assume that the target type is an int. */ | |
11498 | { | |
11499 | if (expect_type != NULL) | |
11500 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
11501 | arg1)); | |
11502 | else | |
11503 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
11504 | (CORE_ADDR) value_as_address (arg1)); | |
11505 | } | |
6b0d7253 | 11506 | |
4c4b4cd2 PH |
11507 | if (ada_is_array_descriptor_type (type)) |
11508 | /* GDB allows dereferencing GNAT array descriptors. */ | |
11509 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 11510 | else |
4c4b4cd2 | 11511 | return ada_value_ind (arg1); |
14f9c5c9 AS |
11512 | |
11513 | case STRUCTOP_STRUCT: | |
11514 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
11515 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
5ec18f2b | 11516 | preeval_pos = *pos; |
14f9c5c9 AS |
11517 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11518 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 11519 | goto nosideret; |
14f9c5c9 | 11520 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 11521 | { |
df407dfe | 11522 | struct type *type1 = value_type (arg1); |
5b4ee69b | 11523 | |
76a01679 JB |
11524 | if (ada_is_tagged_type (type1, 1)) |
11525 | { | |
11526 | type = ada_lookup_struct_elt_type (type1, | |
11527 | &exp->elts[pc + 2].string, | |
988f6b3d | 11528 | 1, 1); |
5ec18f2b JG |
11529 | |
11530 | /* If the field is not found, check if it exists in the | |
11531 | extension of this object's type. This means that we | |
11532 | need to evaluate completely the expression. */ | |
11533 | ||
76a01679 | 11534 | if (type == NULL) |
5ec18f2b JG |
11535 | { |
11536 | arg1 = evaluate_subexp (NULL_TYPE, exp, &preeval_pos, | |
11537 | EVAL_NORMAL); | |
11538 | arg1 = ada_value_struct_elt (arg1, | |
11539 | &exp->elts[pc + 2].string, | |
11540 | 0); | |
11541 | arg1 = unwrap_value (arg1); | |
11542 | type = value_type (ada_to_fixed_value (arg1)); | |
11543 | } | |
76a01679 JB |
11544 | } |
11545 | else | |
11546 | type = | |
11547 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
988f6b3d | 11548 | 0); |
76a01679 JB |
11549 | |
11550 | return value_zero (ada_aligned_type (type), lval_memory); | |
11551 | } | |
14f9c5c9 | 11552 | else |
a579cd9a MW |
11553 | { |
11554 | arg1 = ada_value_struct_elt (arg1, &exp->elts[pc + 2].string, 0); | |
11555 | arg1 = unwrap_value (arg1); | |
11556 | return ada_to_fixed_value (arg1); | |
11557 | } | |
284614f0 | 11558 | |
14f9c5c9 | 11559 | case OP_TYPE: |
4c4b4cd2 PH |
11560 | /* The value is not supposed to be used. This is here to make it |
11561 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
11562 | (*pos) += 2; |
11563 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 11564 | goto nosideret; |
14f9c5c9 | 11565 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 11566 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 11567 | else |
323e0a4a | 11568 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
11569 | |
11570 | case OP_AGGREGATE: | |
11571 | case OP_CHOICES: | |
11572 | case OP_OTHERS: | |
11573 | case OP_DISCRETE_RANGE: | |
11574 | case OP_POSITIONAL: | |
11575 | case OP_NAME: | |
11576 | if (noside == EVAL_NORMAL) | |
11577 | switch (op) | |
11578 | { | |
11579 | case OP_NAME: | |
11580 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 11581 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
11582 | case OP_AGGREGATE: |
11583 | error (_("Aggregates only allowed on the right of an assignment")); | |
11584 | default: | |
0963b4bd MS |
11585 | internal_error (__FILE__, __LINE__, |
11586 | _("aggregate apparently mangled")); | |
52ce6436 PH |
11587 | } |
11588 | ||
11589 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
11590 | *pos += oplen - 1; | |
11591 | for (tem = 0; tem < nargs; tem += 1) | |
11592 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
11593 | goto nosideret; | |
14f9c5c9 AS |
11594 | } |
11595 | ||
11596 | nosideret: | |
ced9779b | 11597 | return eval_skip_value (exp); |
14f9c5c9 | 11598 | } |
14f9c5c9 | 11599 | \f |
d2e4a39e | 11600 | |
4c4b4cd2 | 11601 | /* Fixed point */ |
14f9c5c9 AS |
11602 | |
11603 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
11604 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 11605 | Otherwise, return NULL. */ |
14f9c5c9 | 11606 | |
d2e4a39e | 11607 | static const char * |
ebf56fd3 | 11608 | fixed_type_info (struct type *type) |
14f9c5c9 | 11609 | { |
d2e4a39e | 11610 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
11611 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
11612 | ||
d2e4a39e AS |
11613 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
11614 | { | |
14f9c5c9 | 11615 | const char *tail = strstr (name, "___XF_"); |
5b4ee69b | 11616 | |
14f9c5c9 | 11617 | if (tail == NULL) |
4c4b4cd2 | 11618 | return NULL; |
d2e4a39e | 11619 | else |
4c4b4cd2 | 11620 | return tail + 5; |
14f9c5c9 AS |
11621 | } |
11622 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
11623 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
11624 | else | |
11625 | return NULL; | |
11626 | } | |
11627 | ||
4c4b4cd2 | 11628 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
11629 | |
11630 | int | |
ebf56fd3 | 11631 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
11632 | { |
11633 | return fixed_type_info (type) != NULL; | |
11634 | } | |
11635 | ||
4c4b4cd2 PH |
11636 | /* Return non-zero iff TYPE represents a System.Address type. */ |
11637 | ||
11638 | int | |
11639 | ada_is_system_address_type (struct type *type) | |
11640 | { | |
11641 | return (TYPE_NAME (type) | |
11642 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
11643 | } | |
11644 | ||
14f9c5c9 | 11645 | /* Assuming that TYPE is the representation of an Ada fixed-point |
50eff16b UW |
11646 | type, return the target floating-point type to be used to represent |
11647 | of this type during internal computation. */ | |
11648 | ||
11649 | static struct type * | |
11650 | ada_scaling_type (struct type *type) | |
11651 | { | |
11652 | return builtin_type (get_type_arch (type))->builtin_long_double; | |
11653 | } | |
11654 | ||
11655 | /* Assuming that TYPE is the representation of an Ada fixed-point | |
11656 | type, return its delta, or NULL if the type is malformed and the | |
4c4b4cd2 | 11657 | delta cannot be determined. */ |
14f9c5c9 | 11658 | |
50eff16b | 11659 | struct value * |
ebf56fd3 | 11660 | ada_delta (struct type *type) |
14f9c5c9 AS |
11661 | { |
11662 | const char *encoding = fixed_type_info (type); | |
50eff16b UW |
11663 | struct type *scale_type = ada_scaling_type (type); |
11664 | ||
11665 | long long num, den; | |
11666 | ||
11667 | if (sscanf (encoding, "_%lld_%lld", &num, &den) < 2) | |
11668 | return nullptr; | |
d2e4a39e | 11669 | else |
50eff16b UW |
11670 | return value_binop (value_from_longest (scale_type, num), |
11671 | value_from_longest (scale_type, den), BINOP_DIV); | |
14f9c5c9 AS |
11672 | } |
11673 | ||
11674 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 11675 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 | 11676 | |
50eff16b UW |
11677 | struct value * |
11678 | ada_scaling_factor (struct type *type) | |
14f9c5c9 AS |
11679 | { |
11680 | const char *encoding = fixed_type_info (type); | |
50eff16b UW |
11681 | struct type *scale_type = ada_scaling_type (type); |
11682 | ||
11683 | long long num0, den0, num1, den1; | |
14f9c5c9 | 11684 | int n; |
d2e4a39e | 11685 | |
50eff16b | 11686 | n = sscanf (encoding, "_%lld_%lld_%lld_%lld", |
facc390f | 11687 | &num0, &den0, &num1, &den1); |
14f9c5c9 AS |
11688 | |
11689 | if (n < 2) | |
50eff16b | 11690 | return value_from_longest (scale_type, 1); |
14f9c5c9 | 11691 | else if (n == 4) |
50eff16b UW |
11692 | return value_binop (value_from_longest (scale_type, num1), |
11693 | value_from_longest (scale_type, den1), BINOP_DIV); | |
d2e4a39e | 11694 | else |
50eff16b UW |
11695 | return value_binop (value_from_longest (scale_type, num0), |
11696 | value_from_longest (scale_type, den0), BINOP_DIV); | |
14f9c5c9 AS |
11697 | } |
11698 | ||
14f9c5c9 | 11699 | \f |
d2e4a39e | 11700 | |
4c4b4cd2 | 11701 | /* Range types */ |
14f9c5c9 AS |
11702 | |
11703 | /* Scan STR beginning at position K for a discriminant name, and | |
11704 | return the value of that discriminant field of DVAL in *PX. If | |
11705 | PNEW_K is not null, put the position of the character beyond the | |
11706 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 11707 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
11708 | |
11709 | static int | |
108d56a4 | 11710 | scan_discrim_bound (const char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 11711 | int *pnew_k) |
14f9c5c9 AS |
11712 | { |
11713 | static char *bound_buffer = NULL; | |
11714 | static size_t bound_buffer_len = 0; | |
5da1a4d3 | 11715 | const char *pstart, *pend, *bound; |
d2e4a39e | 11716 | struct value *bound_val; |
14f9c5c9 AS |
11717 | |
11718 | if (dval == NULL || str == NULL || str[k] == '\0') | |
11719 | return 0; | |
11720 | ||
5da1a4d3 SM |
11721 | pstart = str + k; |
11722 | pend = strstr (pstart, "__"); | |
14f9c5c9 AS |
11723 | if (pend == NULL) |
11724 | { | |
5da1a4d3 | 11725 | bound = pstart; |
14f9c5c9 AS |
11726 | k += strlen (bound); |
11727 | } | |
d2e4a39e | 11728 | else |
14f9c5c9 | 11729 | { |
5da1a4d3 SM |
11730 | int len = pend - pstart; |
11731 | ||
11732 | /* Strip __ and beyond. */ | |
11733 | GROW_VECT (bound_buffer, bound_buffer_len, len + 1); | |
11734 | strncpy (bound_buffer, pstart, len); | |
11735 | bound_buffer[len] = '\0'; | |
11736 | ||
14f9c5c9 | 11737 | bound = bound_buffer; |
d2e4a39e | 11738 | k = pend - str; |
14f9c5c9 | 11739 | } |
d2e4a39e | 11740 | |
df407dfe | 11741 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
11742 | if (bound_val == NULL) |
11743 | return 0; | |
11744 | ||
11745 | *px = value_as_long (bound_val); | |
11746 | if (pnew_k != NULL) | |
11747 | *pnew_k = k; | |
11748 | return 1; | |
11749 | } | |
11750 | ||
11751 | /* Value of variable named NAME in the current environment. If | |
11752 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
11753 | otherwise causes an error with message ERR_MSG. */ |
11754 | ||
d2e4a39e | 11755 | static struct value * |
edb0c9cb | 11756 | get_var_value (const char *name, const char *err_msg) |
14f9c5c9 | 11757 | { |
b5ec771e | 11758 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
14f9c5c9 | 11759 | |
54d343a2 | 11760 | std::vector<struct block_symbol> syms; |
b5ec771e PA |
11761 | int nsyms = ada_lookup_symbol_list_worker (lookup_name, |
11762 | get_selected_block (0), | |
11763 | VAR_DOMAIN, &syms, 1); | |
14f9c5c9 AS |
11764 | |
11765 | if (nsyms != 1) | |
11766 | { | |
11767 | if (err_msg == NULL) | |
4c4b4cd2 | 11768 | return 0; |
14f9c5c9 | 11769 | else |
8a3fe4f8 | 11770 | error (("%s"), err_msg); |
14f9c5c9 AS |
11771 | } |
11772 | ||
54d343a2 | 11773 | return value_of_variable (syms[0].symbol, syms[0].block); |
14f9c5c9 | 11774 | } |
d2e4a39e | 11775 | |
edb0c9cb PA |
11776 | /* Value of integer variable named NAME in the current environment. |
11777 | If no such variable is found, returns false. Otherwise, sets VALUE | |
11778 | to the variable's value and returns true. */ | |
4c4b4cd2 | 11779 | |
edb0c9cb PA |
11780 | bool |
11781 | get_int_var_value (const char *name, LONGEST &value) | |
14f9c5c9 | 11782 | { |
4c4b4cd2 | 11783 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 11784 | |
14f9c5c9 | 11785 | if (var_val == 0) |
edb0c9cb PA |
11786 | return false; |
11787 | ||
11788 | value = value_as_long (var_val); | |
11789 | return true; | |
14f9c5c9 | 11790 | } |
d2e4a39e | 11791 | |
14f9c5c9 AS |
11792 | |
11793 | /* Return a range type whose base type is that of the range type named | |
11794 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 11795 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
11796 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
11797 | corresponding range type from debug information; fall back to using it | |
11798 | if symbol lookup fails. If a new type must be created, allocate it | |
11799 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
11800 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 11801 | |
d2e4a39e | 11802 | static struct type * |
28c85d6c | 11803 | to_fixed_range_type (struct type *raw_type, struct value *dval) |
14f9c5c9 | 11804 | { |
0d5cff50 | 11805 | const char *name; |
14f9c5c9 | 11806 | struct type *base_type; |
108d56a4 | 11807 | const char *subtype_info; |
14f9c5c9 | 11808 | |
28c85d6c JB |
11809 | gdb_assert (raw_type != NULL); |
11810 | gdb_assert (TYPE_NAME (raw_type) != NULL); | |
dddfab26 | 11811 | |
1ce677a4 | 11812 | if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) |
14f9c5c9 AS |
11813 | base_type = TYPE_TARGET_TYPE (raw_type); |
11814 | else | |
11815 | base_type = raw_type; | |
11816 | ||
28c85d6c | 11817 | name = TYPE_NAME (raw_type); |
14f9c5c9 AS |
11818 | subtype_info = strstr (name, "___XD"); |
11819 | if (subtype_info == NULL) | |
690cc4eb | 11820 | { |
43bbcdc2 PH |
11821 | LONGEST L = ada_discrete_type_low_bound (raw_type); |
11822 | LONGEST U = ada_discrete_type_high_bound (raw_type); | |
5b4ee69b | 11823 | |
690cc4eb PH |
11824 | if (L < INT_MIN || U > INT_MAX) |
11825 | return raw_type; | |
11826 | else | |
0c9c3474 SA |
11827 | return create_static_range_type (alloc_type_copy (raw_type), raw_type, |
11828 | L, U); | |
690cc4eb | 11829 | } |
14f9c5c9 AS |
11830 | else |
11831 | { | |
11832 | static char *name_buf = NULL; | |
11833 | static size_t name_len = 0; | |
11834 | int prefix_len = subtype_info - name; | |
11835 | LONGEST L, U; | |
11836 | struct type *type; | |
108d56a4 | 11837 | const char *bounds_str; |
14f9c5c9 AS |
11838 | int n; |
11839 | ||
11840 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
11841 | strncpy (name_buf, name, prefix_len); | |
11842 | name_buf[prefix_len] = '\0'; | |
11843 | ||
11844 | subtype_info += 5; | |
11845 | bounds_str = strchr (subtype_info, '_'); | |
11846 | n = 1; | |
11847 | ||
d2e4a39e | 11848 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
11849 | { |
11850 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
11851 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
11852 | return raw_type; | |
11853 | if (bounds_str[n] == '_') | |
11854 | n += 2; | |
0963b4bd | 11855 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ |
4c4b4cd2 PH |
11856 | n += 1; |
11857 | subtype_info += 1; | |
11858 | } | |
d2e4a39e | 11859 | else |
4c4b4cd2 | 11860 | { |
4c4b4cd2 | 11861 | strcpy (name_buf + prefix_len, "___L"); |
edb0c9cb | 11862 | if (!get_int_var_value (name_buf, L)) |
4c4b4cd2 | 11863 | { |
323e0a4a | 11864 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
11865 | L = 1; |
11866 | } | |
11867 | } | |
14f9c5c9 | 11868 | |
d2e4a39e | 11869 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
11870 | { |
11871 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
11872 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
11873 | return raw_type; | |
11874 | } | |
d2e4a39e | 11875 | else |
4c4b4cd2 | 11876 | { |
4c4b4cd2 | 11877 | strcpy (name_buf + prefix_len, "___U"); |
edb0c9cb | 11878 | if (!get_int_var_value (name_buf, U)) |
4c4b4cd2 | 11879 | { |
323e0a4a | 11880 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
11881 | U = L; |
11882 | } | |
11883 | } | |
14f9c5c9 | 11884 | |
0c9c3474 SA |
11885 | type = create_static_range_type (alloc_type_copy (raw_type), |
11886 | base_type, L, U); | |
f5a91472 JB |
11887 | /* create_static_range_type alters the resulting type's length |
11888 | to match the size of the base_type, which is not what we want. | |
11889 | Set it back to the original range type's length. */ | |
11890 | TYPE_LENGTH (type) = TYPE_LENGTH (raw_type); | |
d2e4a39e | 11891 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
11892 | return type; |
11893 | } | |
11894 | } | |
11895 | ||
4c4b4cd2 PH |
11896 | /* True iff NAME is the name of a range type. */ |
11897 | ||
14f9c5c9 | 11898 | int |
d2e4a39e | 11899 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
11900 | { |
11901 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 11902 | } |
14f9c5c9 | 11903 | \f |
d2e4a39e | 11904 | |
4c4b4cd2 PH |
11905 | /* Modular types */ |
11906 | ||
11907 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 11908 | |
14f9c5c9 | 11909 | int |
d2e4a39e | 11910 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 11911 | { |
18af8284 | 11912 | struct type *subranged_type = get_base_type (type); |
14f9c5c9 AS |
11913 | |
11914 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
690cc4eb | 11915 | && TYPE_CODE (subranged_type) == TYPE_CODE_INT |
4c4b4cd2 | 11916 | && TYPE_UNSIGNED (subranged_type)); |
14f9c5c9 AS |
11917 | } |
11918 | ||
4c4b4cd2 PH |
11919 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
11920 | ||
61ee279c | 11921 | ULONGEST |
0056e4d5 | 11922 | ada_modulus (struct type *type) |
14f9c5c9 | 11923 | { |
43bbcdc2 | 11924 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 11925 | } |
d2e4a39e | 11926 | \f |
f7f9143b JB |
11927 | |
11928 | /* Ada exception catchpoint support: | |
11929 | --------------------------------- | |
11930 | ||
11931 | We support 3 kinds of exception catchpoints: | |
11932 | . catchpoints on Ada exceptions | |
11933 | . catchpoints on unhandled Ada exceptions | |
11934 | . catchpoints on failed assertions | |
11935 | ||
11936 | Exceptions raised during failed assertions, or unhandled exceptions | |
11937 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
11938 | However, we can easily differentiate these two special cases, and having | |
11939 | the option to distinguish these two cases from the rest can be useful | |
11940 | to zero-in on certain situations. | |
11941 | ||
11942 | Exception catchpoints are a specialized form of breakpoint, | |
11943 | since they rely on inserting breakpoints inside known routines | |
11944 | of the GNAT runtime. The implementation therefore uses a standard | |
11945 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
11946 | of breakpoint_ops. | |
11947 | ||
0259addd JB |
11948 | Support in the runtime for exception catchpoints have been changed |
11949 | a few times already, and these changes affect the implementation | |
11950 | of these catchpoints. In order to be able to support several | |
11951 | variants of the runtime, we use a sniffer that will determine | |
28010a5d | 11952 | the runtime variant used by the program being debugged. */ |
f7f9143b | 11953 | |
82eacd52 JB |
11954 | /* Ada's standard exceptions. |
11955 | ||
11956 | The Ada 83 standard also defined Numeric_Error. But there so many | |
11957 | situations where it was unclear from the Ada 83 Reference Manual | |
11958 | (RM) whether Constraint_Error or Numeric_Error should be raised, | |
11959 | that the ARG (Ada Rapporteur Group) eventually issued a Binding | |
11960 | Interpretation saying that anytime the RM says that Numeric_Error | |
11961 | should be raised, the implementation may raise Constraint_Error. | |
11962 | Ada 95 went one step further and pretty much removed Numeric_Error | |
11963 | from the list of standard exceptions (it made it a renaming of | |
11964 | Constraint_Error, to help preserve compatibility when compiling | |
11965 | an Ada83 compiler). As such, we do not include Numeric_Error from | |
11966 | this list of standard exceptions. */ | |
3d0b0fa3 | 11967 | |
a121b7c1 | 11968 | static const char *standard_exc[] = { |
3d0b0fa3 JB |
11969 | "constraint_error", |
11970 | "program_error", | |
11971 | "storage_error", | |
11972 | "tasking_error" | |
11973 | }; | |
11974 | ||
0259addd JB |
11975 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
11976 | ||
11977 | /* A structure that describes how to support exception catchpoints | |
11978 | for a given executable. */ | |
11979 | ||
11980 | struct exception_support_info | |
11981 | { | |
11982 | /* The name of the symbol to break on in order to insert | |
11983 | a catchpoint on exceptions. */ | |
11984 | const char *catch_exception_sym; | |
11985 | ||
11986 | /* The name of the symbol to break on in order to insert | |
11987 | a catchpoint on unhandled exceptions. */ | |
11988 | const char *catch_exception_unhandled_sym; | |
11989 | ||
11990 | /* The name of the symbol to break on in order to insert | |
11991 | a catchpoint on failed assertions. */ | |
11992 | const char *catch_assert_sym; | |
11993 | ||
9f757bf7 XR |
11994 | /* The name of the symbol to break on in order to insert |
11995 | a catchpoint on exception handling. */ | |
11996 | const char *catch_handlers_sym; | |
11997 | ||
0259addd JB |
11998 | /* Assuming that the inferior just triggered an unhandled exception |
11999 | catchpoint, this function is responsible for returning the address | |
12000 | in inferior memory where the name of that exception is stored. | |
12001 | Return zero if the address could not be computed. */ | |
12002 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
12003 | }; | |
12004 | ||
12005 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
12006 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
12007 | ||
12008 | /* The following exception support info structure describes how to | |
12009 | implement exception catchpoints with the latest version of the | |
12010 | Ada runtime (as of 2007-03-06). */ | |
12011 | ||
12012 | static const struct exception_support_info default_exception_support_info = | |
12013 | { | |
12014 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
12015 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
12016 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 12017 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
12018 | ada_unhandled_exception_name_addr |
12019 | }; | |
12020 | ||
12021 | /* The following exception support info structure describes how to | |
12022 | implement exception catchpoints with a slightly older version | |
12023 | of the Ada runtime. */ | |
12024 | ||
12025 | static const struct exception_support_info exception_support_info_fallback = | |
12026 | { | |
12027 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
12028 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
12029 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 12030 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
12031 | ada_unhandled_exception_name_addr_from_raise |
12032 | }; | |
12033 | ||
f17011e0 JB |
12034 | /* Return nonzero if we can detect the exception support routines |
12035 | described in EINFO. | |
12036 | ||
12037 | This function errors out if an abnormal situation is detected | |
12038 | (for instance, if we find the exception support routines, but | |
12039 | that support is found to be incomplete). */ | |
12040 | ||
12041 | static int | |
12042 | ada_has_this_exception_support (const struct exception_support_info *einfo) | |
12043 | { | |
12044 | struct symbol *sym; | |
12045 | ||
12046 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
12047 | that should be compiled with debugging information. As a result, we | |
12048 | expect to find that symbol in the symtabs. */ | |
12049 | ||
12050 | sym = standard_lookup (einfo->catch_exception_sym, NULL, VAR_DOMAIN); | |
12051 | if (sym == NULL) | |
a6af7abe JB |
12052 | { |
12053 | /* Perhaps we did not find our symbol because the Ada runtime was | |
12054 | compiled without debugging info, or simply stripped of it. | |
12055 | It happens on some GNU/Linux distributions for instance, where | |
12056 | users have to install a separate debug package in order to get | |
12057 | the runtime's debugging info. In that situation, let the user | |
12058 | know why we cannot insert an Ada exception catchpoint. | |
12059 | ||
12060 | Note: Just for the purpose of inserting our Ada exception | |
12061 | catchpoint, we could rely purely on the associated minimal symbol. | |
12062 | But we would be operating in degraded mode anyway, since we are | |
12063 | still lacking the debugging info needed later on to extract | |
12064 | the name of the exception being raised (this name is printed in | |
12065 | the catchpoint message, and is also used when trying to catch | |
12066 | a specific exception). We do not handle this case for now. */ | |
3b7344d5 | 12067 | struct bound_minimal_symbol msym |
1c8e84b0 JB |
12068 | = lookup_minimal_symbol (einfo->catch_exception_sym, NULL, NULL); |
12069 | ||
3b7344d5 | 12070 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) |
a6af7abe JB |
12071 | error (_("Your Ada runtime appears to be missing some debugging " |
12072 | "information.\nCannot insert Ada exception catchpoint " | |
12073 | "in this configuration.")); | |
12074 | ||
12075 | return 0; | |
12076 | } | |
f17011e0 JB |
12077 | |
12078 | /* Make sure that the symbol we found corresponds to a function. */ | |
12079 | ||
12080 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
12081 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
12082 | SYMBOL_LINKAGE_NAME (sym), SYMBOL_CLASS (sym)); | |
12083 | ||
12084 | return 1; | |
12085 | } | |
12086 | ||
0259addd JB |
12087 | /* Inspect the Ada runtime and determine which exception info structure |
12088 | should be used to provide support for exception catchpoints. | |
12089 | ||
3eecfa55 JB |
12090 | This function will always set the per-inferior exception_info, |
12091 | or raise an error. */ | |
0259addd JB |
12092 | |
12093 | static void | |
12094 | ada_exception_support_info_sniffer (void) | |
12095 | { | |
3eecfa55 | 12096 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
0259addd JB |
12097 | |
12098 | /* If the exception info is already known, then no need to recompute it. */ | |
3eecfa55 | 12099 | if (data->exception_info != NULL) |
0259addd JB |
12100 | return; |
12101 | ||
12102 | /* Check the latest (default) exception support info. */ | |
f17011e0 | 12103 | if (ada_has_this_exception_support (&default_exception_support_info)) |
0259addd | 12104 | { |
3eecfa55 | 12105 | data->exception_info = &default_exception_support_info; |
0259addd JB |
12106 | return; |
12107 | } | |
12108 | ||
12109 | /* Try our fallback exception suport info. */ | |
f17011e0 | 12110 | if (ada_has_this_exception_support (&exception_support_info_fallback)) |
0259addd | 12111 | { |
3eecfa55 | 12112 | data->exception_info = &exception_support_info_fallback; |
0259addd JB |
12113 | return; |
12114 | } | |
12115 | ||
12116 | /* Sometimes, it is normal for us to not be able to find the routine | |
12117 | we are looking for. This happens when the program is linked with | |
12118 | the shared version of the GNAT runtime, and the program has not been | |
12119 | started yet. Inform the user of these two possible causes if | |
12120 | applicable. */ | |
12121 | ||
ccefe4c4 | 12122 | if (ada_update_initial_language (language_unknown) != language_ada) |
0259addd JB |
12123 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); |
12124 | ||
12125 | /* If the symbol does not exist, then check that the program is | |
12126 | already started, to make sure that shared libraries have been | |
12127 | loaded. If it is not started, this may mean that the symbol is | |
12128 | in a shared library. */ | |
12129 | ||
e99b03dc | 12130 | if (inferior_ptid.pid () == 0) |
0259addd JB |
12131 | error (_("Unable to insert catchpoint. Try to start the program first.")); |
12132 | ||
12133 | /* At this point, we know that we are debugging an Ada program and | |
12134 | that the inferior has been started, but we still are not able to | |
0963b4bd | 12135 | find the run-time symbols. That can mean that we are in |
0259addd JB |
12136 | configurable run time mode, or that a-except as been optimized |
12137 | out by the linker... In any case, at this point it is not worth | |
12138 | supporting this feature. */ | |
12139 | ||
7dda8cff | 12140 | error (_("Cannot insert Ada exception catchpoints in this configuration.")); |
0259addd JB |
12141 | } |
12142 | ||
f7f9143b JB |
12143 | /* True iff FRAME is very likely to be that of a function that is |
12144 | part of the runtime system. This is all very heuristic, but is | |
12145 | intended to be used as advice as to what frames are uninteresting | |
12146 | to most users. */ | |
12147 | ||
12148 | static int | |
12149 | is_known_support_routine (struct frame_info *frame) | |
12150 | { | |
692465f1 | 12151 | enum language func_lang; |
f7f9143b | 12152 | int i; |
f35a17b5 | 12153 | const char *fullname; |
f7f9143b | 12154 | |
4ed6b5be JB |
12155 | /* If this code does not have any debugging information (no symtab), |
12156 | This cannot be any user code. */ | |
f7f9143b | 12157 | |
51abb421 | 12158 | symtab_and_line sal = find_frame_sal (frame); |
f7f9143b JB |
12159 | if (sal.symtab == NULL) |
12160 | return 1; | |
12161 | ||
4ed6b5be JB |
12162 | /* If there is a symtab, but the associated source file cannot be |
12163 | located, then assume this is not user code: Selecting a frame | |
12164 | for which we cannot display the code would not be very helpful | |
12165 | for the user. This should also take care of case such as VxWorks | |
12166 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 12167 | |
f35a17b5 JK |
12168 | fullname = symtab_to_fullname (sal.symtab); |
12169 | if (access (fullname, R_OK) != 0) | |
f7f9143b JB |
12170 | return 1; |
12171 | ||
4ed6b5be JB |
12172 | /* Check the unit filename againt the Ada runtime file naming. |
12173 | We also check the name of the objfile against the name of some | |
12174 | known system libraries that sometimes come with debugging info | |
12175 | too. */ | |
12176 | ||
f7f9143b JB |
12177 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
12178 | { | |
12179 | re_comp (known_runtime_file_name_patterns[i]); | |
f69c91ad | 12180 | if (re_exec (lbasename (sal.symtab->filename))) |
f7f9143b | 12181 | return 1; |
eb822aa6 DE |
12182 | if (SYMTAB_OBJFILE (sal.symtab) != NULL |
12183 | && re_exec (objfile_name (SYMTAB_OBJFILE (sal.symtab)))) | |
4ed6b5be | 12184 | return 1; |
f7f9143b JB |
12185 | } |
12186 | ||
4ed6b5be | 12187 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 12188 | |
c6dc63a1 TT |
12189 | gdb::unique_xmalloc_ptr<char> func_name |
12190 | = find_frame_funname (frame, &func_lang, NULL); | |
f7f9143b JB |
12191 | if (func_name == NULL) |
12192 | return 1; | |
12193 | ||
12194 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
12195 | { | |
12196 | re_comp (known_auxiliary_function_name_patterns[i]); | |
c6dc63a1 TT |
12197 | if (re_exec (func_name.get ())) |
12198 | return 1; | |
f7f9143b JB |
12199 | } |
12200 | ||
12201 | return 0; | |
12202 | } | |
12203 | ||
12204 | /* Find the first frame that contains debugging information and that is not | |
12205 | part of the Ada run-time, starting from FI and moving upward. */ | |
12206 | ||
0ef643c8 | 12207 | void |
f7f9143b JB |
12208 | ada_find_printable_frame (struct frame_info *fi) |
12209 | { | |
12210 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
12211 | { | |
12212 | if (!is_known_support_routine (fi)) | |
12213 | { | |
12214 | select_frame (fi); | |
12215 | break; | |
12216 | } | |
12217 | } | |
12218 | ||
12219 | } | |
12220 | ||
12221 | /* Assuming that the inferior just triggered an unhandled exception | |
12222 | catchpoint, return the address in inferior memory where the name | |
12223 | of the exception is stored. | |
12224 | ||
12225 | Return zero if the address could not be computed. */ | |
12226 | ||
12227 | static CORE_ADDR | |
12228 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
12229 | { |
12230 | return parse_and_eval_address ("e.full_name"); | |
12231 | } | |
12232 | ||
12233 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
12234 | should be used when the inferior uses an older version of the runtime, | |
12235 | where the exception name needs to be extracted from a specific frame | |
12236 | several frames up in the callstack. */ | |
12237 | ||
12238 | static CORE_ADDR | |
12239 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
12240 | { |
12241 | int frame_level; | |
12242 | struct frame_info *fi; | |
3eecfa55 | 12243 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
f7f9143b JB |
12244 | |
12245 | /* To determine the name of this exception, we need to select | |
12246 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
12247 | at least 3 levels up, so we simply skip the first 3 frames | |
12248 | without checking the name of their associated function. */ | |
12249 | fi = get_current_frame (); | |
12250 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
12251 | if (fi != NULL) | |
12252 | fi = get_prev_frame (fi); | |
12253 | ||
12254 | while (fi != NULL) | |
12255 | { | |
692465f1 JB |
12256 | enum language func_lang; |
12257 | ||
c6dc63a1 TT |
12258 | gdb::unique_xmalloc_ptr<char> func_name |
12259 | = find_frame_funname (fi, &func_lang, NULL); | |
55b87a52 KS |
12260 | if (func_name != NULL) |
12261 | { | |
c6dc63a1 | 12262 | if (strcmp (func_name.get (), |
55b87a52 KS |
12263 | data->exception_info->catch_exception_sym) == 0) |
12264 | break; /* We found the frame we were looking for... */ | |
55b87a52 | 12265 | } |
fb44b1a7 | 12266 | fi = get_prev_frame (fi); |
f7f9143b JB |
12267 | } |
12268 | ||
12269 | if (fi == NULL) | |
12270 | return 0; | |
12271 | ||
12272 | select_frame (fi); | |
12273 | return parse_and_eval_address ("id.full_name"); | |
12274 | } | |
12275 | ||
12276 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
12277 | (of any type), return the address in inferior memory where the name | |
12278 | of the exception is stored, if applicable. | |
12279 | ||
45db7c09 PA |
12280 | Assumes the selected frame is the current frame. |
12281 | ||
f7f9143b JB |
12282 | Return zero if the address could not be computed, or if not relevant. */ |
12283 | ||
12284 | static CORE_ADDR | |
761269c8 | 12285 | ada_exception_name_addr_1 (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12286 | struct breakpoint *b) |
12287 | { | |
3eecfa55 JB |
12288 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
12289 | ||
f7f9143b JB |
12290 | switch (ex) |
12291 | { | |
761269c8 | 12292 | case ada_catch_exception: |
f7f9143b JB |
12293 | return (parse_and_eval_address ("e.full_name")); |
12294 | break; | |
12295 | ||
761269c8 | 12296 | case ada_catch_exception_unhandled: |
3eecfa55 | 12297 | return data->exception_info->unhandled_exception_name_addr (); |
f7f9143b | 12298 | break; |
9f757bf7 XR |
12299 | |
12300 | case ada_catch_handlers: | |
12301 | return 0; /* The runtimes does not provide access to the exception | |
12302 | name. */ | |
12303 | break; | |
12304 | ||
761269c8 | 12305 | case ada_catch_assert: |
f7f9143b JB |
12306 | return 0; /* Exception name is not relevant in this case. */ |
12307 | break; | |
12308 | ||
12309 | default: | |
12310 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12311 | break; | |
12312 | } | |
12313 | ||
12314 | return 0; /* Should never be reached. */ | |
12315 | } | |
12316 | ||
e547c119 JB |
12317 | /* Assuming the inferior is stopped at an exception catchpoint, |
12318 | return the message which was associated to the exception, if | |
12319 | available. Return NULL if the message could not be retrieved. | |
12320 | ||
e547c119 JB |
12321 | Note: The exception message can be associated to an exception |
12322 | either through the use of the Raise_Exception function, or | |
12323 | more simply (Ada 2005 and later), via: | |
12324 | ||
12325 | raise Exception_Name with "exception message"; | |
12326 | ||
12327 | */ | |
12328 | ||
6f46ac85 | 12329 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
12330 | ada_exception_message_1 (void) |
12331 | { | |
12332 | struct value *e_msg_val; | |
e547c119 | 12333 | int e_msg_len; |
e547c119 JB |
12334 | |
12335 | /* For runtimes that support this feature, the exception message | |
12336 | is passed as an unbounded string argument called "message". */ | |
12337 | e_msg_val = parse_and_eval ("message"); | |
12338 | if (e_msg_val == NULL) | |
12339 | return NULL; /* Exception message not supported. */ | |
12340 | ||
12341 | e_msg_val = ada_coerce_to_simple_array (e_msg_val); | |
12342 | gdb_assert (e_msg_val != NULL); | |
12343 | e_msg_len = TYPE_LENGTH (value_type (e_msg_val)); | |
12344 | ||
12345 | /* If the message string is empty, then treat it as if there was | |
12346 | no exception message. */ | |
12347 | if (e_msg_len <= 0) | |
12348 | return NULL; | |
12349 | ||
6f46ac85 TT |
12350 | gdb::unique_xmalloc_ptr<char> e_msg ((char *) xmalloc (e_msg_len + 1)); |
12351 | read_memory_string (value_address (e_msg_val), e_msg.get (), e_msg_len + 1); | |
12352 | e_msg.get ()[e_msg_len] = '\0'; | |
e547c119 | 12353 | |
e547c119 JB |
12354 | return e_msg; |
12355 | } | |
12356 | ||
12357 | /* Same as ada_exception_message_1, except that all exceptions are | |
12358 | contained here (returning NULL instead). */ | |
12359 | ||
6f46ac85 | 12360 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
12361 | ada_exception_message (void) |
12362 | { | |
6f46ac85 | 12363 | gdb::unique_xmalloc_ptr<char> e_msg; |
e547c119 | 12364 | |
a70b8144 | 12365 | try |
e547c119 JB |
12366 | { |
12367 | e_msg = ada_exception_message_1 (); | |
12368 | } | |
230d2906 | 12369 | catch (const gdb_exception_error &e) |
e547c119 | 12370 | { |
6f46ac85 | 12371 | e_msg.reset (nullptr); |
e547c119 | 12372 | } |
e547c119 JB |
12373 | |
12374 | return e_msg; | |
12375 | } | |
12376 | ||
f7f9143b JB |
12377 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains |
12378 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
12379 | When an error is intercepted, a warning with the error message is printed, | |
12380 | and zero is returned. */ | |
12381 | ||
12382 | static CORE_ADDR | |
761269c8 | 12383 | ada_exception_name_addr (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12384 | struct breakpoint *b) |
12385 | { | |
f7f9143b JB |
12386 | CORE_ADDR result = 0; |
12387 | ||
a70b8144 | 12388 | try |
f7f9143b JB |
12389 | { |
12390 | result = ada_exception_name_addr_1 (ex, b); | |
12391 | } | |
12392 | ||
230d2906 | 12393 | catch (const gdb_exception_error &e) |
f7f9143b | 12394 | { |
3d6e9d23 | 12395 | warning (_("failed to get exception name: %s"), e.what ()); |
f7f9143b JB |
12396 | return 0; |
12397 | } | |
12398 | ||
12399 | return result; | |
12400 | } | |
12401 | ||
cb7de75e | 12402 | static std::string ada_exception_catchpoint_cond_string |
9f757bf7 XR |
12403 | (const char *excep_string, |
12404 | enum ada_exception_catchpoint_kind ex); | |
28010a5d PA |
12405 | |
12406 | /* Ada catchpoints. | |
12407 | ||
12408 | In the case of catchpoints on Ada exceptions, the catchpoint will | |
12409 | stop the target on every exception the program throws. When a user | |
12410 | specifies the name of a specific exception, we translate this | |
12411 | request into a condition expression (in text form), and then parse | |
12412 | it into an expression stored in each of the catchpoint's locations. | |
12413 | We then use this condition to check whether the exception that was | |
12414 | raised is the one the user is interested in. If not, then the | |
12415 | target is resumed again. We store the name of the requested | |
12416 | exception, in order to be able to re-set the condition expression | |
12417 | when symbols change. */ | |
12418 | ||
12419 | /* An instance of this type is used to represent an Ada catchpoint | |
5625a286 | 12420 | breakpoint location. */ |
28010a5d | 12421 | |
5625a286 | 12422 | class ada_catchpoint_location : public bp_location |
28010a5d | 12423 | { |
5625a286 | 12424 | public: |
5f486660 TT |
12425 | ada_catchpoint_location (breakpoint *owner) |
12426 | : bp_location (owner) | |
5625a286 | 12427 | {} |
28010a5d PA |
12428 | |
12429 | /* The condition that checks whether the exception that was raised | |
12430 | is the specific exception the user specified on catchpoint | |
12431 | creation. */ | |
4d01a485 | 12432 | expression_up excep_cond_expr; |
28010a5d PA |
12433 | }; |
12434 | ||
c1fc2657 | 12435 | /* An instance of this type is used to represent an Ada catchpoint. */ |
28010a5d | 12436 | |
c1fc2657 | 12437 | struct ada_catchpoint : public breakpoint |
28010a5d | 12438 | { |
28010a5d | 12439 | /* The name of the specific exception the user specified. */ |
bc18fbb5 | 12440 | std::string excep_string; |
28010a5d PA |
12441 | }; |
12442 | ||
12443 | /* Parse the exception condition string in the context of each of the | |
12444 | catchpoint's locations, and store them for later evaluation. */ | |
12445 | ||
12446 | static void | |
9f757bf7 XR |
12447 | create_excep_cond_exprs (struct ada_catchpoint *c, |
12448 | enum ada_exception_catchpoint_kind ex) | |
28010a5d | 12449 | { |
28010a5d | 12450 | /* Nothing to do if there's no specific exception to catch. */ |
bc18fbb5 | 12451 | if (c->excep_string.empty ()) |
28010a5d PA |
12452 | return; |
12453 | ||
12454 | /* Same if there are no locations... */ | |
c1fc2657 | 12455 | if (c->loc == NULL) |
28010a5d PA |
12456 | return; |
12457 | ||
2ff0a947 TT |
12458 | /* We have to compute the expression once for each program space, |
12459 | because the expression may hold the addresses of multiple symbols | |
12460 | in some cases. */ | |
12461 | std::multimap<program_space *, struct bp_location *> loc_map; | |
bde09ab7 | 12462 | for (bp_location *bl = c->loc; bl != NULL; bl = bl->next) |
2ff0a947 | 12463 | loc_map.emplace (bl->pspace, bl); |
28010a5d | 12464 | |
2ff0a947 TT |
12465 | scoped_restore_current_program_space save_pspace; |
12466 | ||
12467 | std::string cond_string; | |
12468 | program_space *last_ps = nullptr; | |
12469 | for (auto iter : loc_map) | |
28010a5d PA |
12470 | { |
12471 | struct ada_catchpoint_location *ada_loc | |
2ff0a947 TT |
12472 | = (struct ada_catchpoint_location *) iter.second; |
12473 | ||
12474 | if (ada_loc->pspace != last_ps) | |
12475 | { | |
12476 | last_ps = ada_loc->pspace; | |
12477 | set_current_program_space (last_ps); | |
12478 | ||
12479 | /* Compute the condition expression in text form, from the | |
12480 | specific expection we want to catch. */ | |
12481 | cond_string | |
12482 | = ada_exception_catchpoint_cond_string (c->excep_string.c_str (), | |
12483 | ex); | |
12484 | } | |
12485 | ||
4d01a485 | 12486 | expression_up exp; |
28010a5d | 12487 | |
2ff0a947 | 12488 | if (!ada_loc->shlib_disabled) |
28010a5d | 12489 | { |
bbc13ae3 | 12490 | const char *s; |
28010a5d | 12491 | |
cb7de75e | 12492 | s = cond_string.c_str (); |
a70b8144 | 12493 | try |
28010a5d | 12494 | { |
2ff0a947 TT |
12495 | exp = parse_exp_1 (&s, ada_loc->address, |
12496 | block_for_pc (ada_loc->address), | |
036e657b | 12497 | 0); |
28010a5d | 12498 | } |
230d2906 | 12499 | catch (const gdb_exception_error &e) |
849f2b52 JB |
12500 | { |
12501 | warning (_("failed to reevaluate internal exception condition " | |
12502 | "for catchpoint %d: %s"), | |
3d6e9d23 | 12503 | c->number, e.what ()); |
849f2b52 | 12504 | } |
28010a5d PA |
12505 | } |
12506 | ||
b22e99fd | 12507 | ada_loc->excep_cond_expr = std::move (exp); |
28010a5d | 12508 | } |
28010a5d PA |
12509 | } |
12510 | ||
28010a5d PA |
12511 | /* Implement the ALLOCATE_LOCATION method in the breakpoint_ops |
12512 | structure for all exception catchpoint kinds. */ | |
12513 | ||
12514 | static struct bp_location * | |
761269c8 | 12515 | allocate_location_exception (enum ada_exception_catchpoint_kind ex, |
28010a5d PA |
12516 | struct breakpoint *self) |
12517 | { | |
5f486660 | 12518 | return new ada_catchpoint_location (self); |
28010a5d PA |
12519 | } |
12520 | ||
12521 | /* Implement the RE_SET method in the breakpoint_ops structure for all | |
12522 | exception catchpoint kinds. */ | |
12523 | ||
12524 | static void | |
761269c8 | 12525 | re_set_exception (enum ada_exception_catchpoint_kind ex, struct breakpoint *b) |
28010a5d PA |
12526 | { |
12527 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
12528 | ||
12529 | /* Call the base class's method. This updates the catchpoint's | |
12530 | locations. */ | |
2060206e | 12531 | bkpt_breakpoint_ops.re_set (b); |
28010a5d PA |
12532 | |
12533 | /* Reparse the exception conditional expressions. One for each | |
12534 | location. */ | |
9f757bf7 | 12535 | create_excep_cond_exprs (c, ex); |
28010a5d PA |
12536 | } |
12537 | ||
12538 | /* Returns true if we should stop for this breakpoint hit. If the | |
12539 | user specified a specific exception, we only want to cause a stop | |
12540 | if the program thrown that exception. */ | |
12541 | ||
12542 | static int | |
12543 | should_stop_exception (const struct bp_location *bl) | |
12544 | { | |
12545 | struct ada_catchpoint *c = (struct ada_catchpoint *) bl->owner; | |
12546 | const struct ada_catchpoint_location *ada_loc | |
12547 | = (const struct ada_catchpoint_location *) bl; | |
28010a5d PA |
12548 | int stop; |
12549 | ||
12550 | /* With no specific exception, should always stop. */ | |
bc18fbb5 | 12551 | if (c->excep_string.empty ()) |
28010a5d PA |
12552 | return 1; |
12553 | ||
12554 | if (ada_loc->excep_cond_expr == NULL) | |
12555 | { | |
12556 | /* We will have a NULL expression if back when we were creating | |
12557 | the expressions, this location's had failed to parse. */ | |
12558 | return 1; | |
12559 | } | |
12560 | ||
12561 | stop = 1; | |
a70b8144 | 12562 | try |
28010a5d PA |
12563 | { |
12564 | struct value *mark; | |
12565 | ||
12566 | mark = value_mark (); | |
4d01a485 | 12567 | stop = value_true (evaluate_expression (ada_loc->excep_cond_expr.get ())); |
28010a5d PA |
12568 | value_free_to_mark (mark); |
12569 | } | |
230d2906 | 12570 | catch (const gdb_exception &ex) |
492d29ea PA |
12571 | { |
12572 | exception_fprintf (gdb_stderr, ex, | |
12573 | _("Error in testing exception condition:\n")); | |
12574 | } | |
492d29ea | 12575 | |
28010a5d PA |
12576 | return stop; |
12577 | } | |
12578 | ||
12579 | /* Implement the CHECK_STATUS method in the breakpoint_ops structure | |
12580 | for all exception catchpoint kinds. */ | |
12581 | ||
12582 | static void | |
761269c8 | 12583 | check_status_exception (enum ada_exception_catchpoint_kind ex, bpstat bs) |
28010a5d PA |
12584 | { |
12585 | bs->stop = should_stop_exception (bs->bp_location_at); | |
12586 | } | |
12587 | ||
f7f9143b JB |
12588 | /* Implement the PRINT_IT method in the breakpoint_ops structure |
12589 | for all exception catchpoint kinds. */ | |
12590 | ||
12591 | static enum print_stop_action | |
761269c8 | 12592 | print_it_exception (enum ada_exception_catchpoint_kind ex, bpstat bs) |
f7f9143b | 12593 | { |
79a45e25 | 12594 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12595 | struct breakpoint *b = bs->breakpoint_at; |
12596 | ||
956a9fb9 | 12597 | annotate_catchpoint (b->number); |
f7f9143b | 12598 | |
112e8700 | 12599 | if (uiout->is_mi_like_p ()) |
f7f9143b | 12600 | { |
112e8700 | 12601 | uiout->field_string ("reason", |
956a9fb9 | 12602 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12603 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f7f9143b JB |
12604 | } |
12605 | ||
112e8700 SM |
12606 | uiout->text (b->disposition == disp_del |
12607 | ? "\nTemporary catchpoint " : "\nCatchpoint "); | |
12608 | uiout->field_int ("bkptno", b->number); | |
12609 | uiout->text (", "); | |
f7f9143b | 12610 | |
45db7c09 PA |
12611 | /* ada_exception_name_addr relies on the selected frame being the |
12612 | current frame. Need to do this here because this function may be | |
12613 | called more than once when printing a stop, and below, we'll | |
12614 | select the first frame past the Ada run-time (see | |
12615 | ada_find_printable_frame). */ | |
12616 | select_frame (get_current_frame ()); | |
12617 | ||
f7f9143b JB |
12618 | switch (ex) |
12619 | { | |
761269c8 JB |
12620 | case ada_catch_exception: |
12621 | case ada_catch_exception_unhandled: | |
9f757bf7 | 12622 | case ada_catch_handlers: |
956a9fb9 JB |
12623 | { |
12624 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
12625 | char exception_name[256]; | |
12626 | ||
12627 | if (addr != 0) | |
12628 | { | |
c714b426 PA |
12629 | read_memory (addr, (gdb_byte *) exception_name, |
12630 | sizeof (exception_name) - 1); | |
956a9fb9 JB |
12631 | exception_name [sizeof (exception_name) - 1] = '\0'; |
12632 | } | |
12633 | else | |
12634 | { | |
12635 | /* For some reason, we were unable to read the exception | |
12636 | name. This could happen if the Runtime was compiled | |
12637 | without debugging info, for instance. In that case, | |
12638 | just replace the exception name by the generic string | |
12639 | "exception" - it will read as "an exception" in the | |
12640 | notification we are about to print. */ | |
967cff16 | 12641 | memcpy (exception_name, "exception", sizeof ("exception")); |
956a9fb9 JB |
12642 | } |
12643 | /* In the case of unhandled exception breakpoints, we print | |
12644 | the exception name as "unhandled EXCEPTION_NAME", to make | |
12645 | it clearer to the user which kind of catchpoint just got | |
12646 | hit. We used ui_out_text to make sure that this extra | |
12647 | info does not pollute the exception name in the MI case. */ | |
761269c8 | 12648 | if (ex == ada_catch_exception_unhandled) |
112e8700 SM |
12649 | uiout->text ("unhandled "); |
12650 | uiout->field_string ("exception-name", exception_name); | |
956a9fb9 JB |
12651 | } |
12652 | break; | |
761269c8 | 12653 | case ada_catch_assert: |
956a9fb9 JB |
12654 | /* In this case, the name of the exception is not really |
12655 | important. Just print "failed assertion" to make it clearer | |
12656 | that his program just hit an assertion-failure catchpoint. | |
12657 | We used ui_out_text because this info does not belong in | |
12658 | the MI output. */ | |
112e8700 | 12659 | uiout->text ("failed assertion"); |
956a9fb9 | 12660 | break; |
f7f9143b | 12661 | } |
e547c119 | 12662 | |
6f46ac85 | 12663 | gdb::unique_xmalloc_ptr<char> exception_message = ada_exception_message (); |
e547c119 JB |
12664 | if (exception_message != NULL) |
12665 | { | |
e547c119 | 12666 | uiout->text (" ("); |
6f46ac85 | 12667 | uiout->field_string ("exception-message", exception_message.get ()); |
e547c119 | 12668 | uiout->text (")"); |
e547c119 JB |
12669 | } |
12670 | ||
112e8700 | 12671 | uiout->text (" at "); |
956a9fb9 | 12672 | ada_find_printable_frame (get_current_frame ()); |
f7f9143b JB |
12673 | |
12674 | return PRINT_SRC_AND_LOC; | |
12675 | } | |
12676 | ||
12677 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
12678 | for all exception catchpoint kinds. */ | |
12679 | ||
12680 | static void | |
761269c8 | 12681 | print_one_exception (enum ada_exception_catchpoint_kind ex, |
a6d9a66e | 12682 | struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12683 | { |
79a45e25 | 12684 | struct ui_out *uiout = current_uiout; |
28010a5d | 12685 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45b7d TT |
12686 | struct value_print_options opts; |
12687 | ||
12688 | get_user_print_options (&opts); | |
12689 | if (opts.addressprint) | |
f7f9143b JB |
12690 | { |
12691 | annotate_field (4); | |
112e8700 | 12692 | uiout->field_core_addr ("addr", b->loc->gdbarch, b->loc->address); |
f7f9143b JB |
12693 | } |
12694 | ||
12695 | annotate_field (5); | |
a6d9a66e | 12696 | *last_loc = b->loc; |
f7f9143b JB |
12697 | switch (ex) |
12698 | { | |
761269c8 | 12699 | case ada_catch_exception: |
bc18fbb5 | 12700 | if (!c->excep_string.empty ()) |
f7f9143b | 12701 | { |
bc18fbb5 TT |
12702 | std::string msg = string_printf (_("`%s' Ada exception"), |
12703 | c->excep_string.c_str ()); | |
28010a5d | 12704 | |
112e8700 | 12705 | uiout->field_string ("what", msg); |
f7f9143b JB |
12706 | } |
12707 | else | |
112e8700 | 12708 | uiout->field_string ("what", "all Ada exceptions"); |
f7f9143b JB |
12709 | |
12710 | break; | |
12711 | ||
761269c8 | 12712 | case ada_catch_exception_unhandled: |
112e8700 | 12713 | uiout->field_string ("what", "unhandled Ada exceptions"); |
f7f9143b JB |
12714 | break; |
12715 | ||
9f757bf7 | 12716 | case ada_catch_handlers: |
bc18fbb5 | 12717 | if (!c->excep_string.empty ()) |
9f757bf7 XR |
12718 | { |
12719 | uiout->field_fmt ("what", | |
12720 | _("`%s' Ada exception handlers"), | |
bc18fbb5 | 12721 | c->excep_string.c_str ()); |
9f757bf7 XR |
12722 | } |
12723 | else | |
12724 | uiout->field_string ("what", "all Ada exceptions handlers"); | |
12725 | break; | |
12726 | ||
761269c8 | 12727 | case ada_catch_assert: |
112e8700 | 12728 | uiout->field_string ("what", "failed Ada assertions"); |
f7f9143b JB |
12729 | break; |
12730 | ||
12731 | default: | |
12732 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12733 | break; | |
12734 | } | |
12735 | } | |
12736 | ||
12737 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
12738 | for all exception catchpoint kinds. */ | |
12739 | ||
12740 | static void | |
761269c8 | 12741 | print_mention_exception (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12742 | struct breakpoint *b) |
12743 | { | |
28010a5d | 12744 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45e25 | 12745 | struct ui_out *uiout = current_uiout; |
28010a5d | 12746 | |
112e8700 | 12747 | uiout->text (b->disposition == disp_del ? _("Temporary catchpoint ") |
00eb2c4a | 12748 | : _("Catchpoint ")); |
112e8700 SM |
12749 | uiout->field_int ("bkptno", b->number); |
12750 | uiout->text (": "); | |
00eb2c4a | 12751 | |
f7f9143b JB |
12752 | switch (ex) |
12753 | { | |
761269c8 | 12754 | case ada_catch_exception: |
bc18fbb5 | 12755 | if (!c->excep_string.empty ()) |
00eb2c4a | 12756 | { |
862d101a | 12757 | std::string info = string_printf (_("`%s' Ada exception"), |
bc18fbb5 | 12758 | c->excep_string.c_str ()); |
862d101a | 12759 | uiout->text (info.c_str ()); |
00eb2c4a | 12760 | } |
f7f9143b | 12761 | else |
112e8700 | 12762 | uiout->text (_("all Ada exceptions")); |
f7f9143b JB |
12763 | break; |
12764 | ||
761269c8 | 12765 | case ada_catch_exception_unhandled: |
112e8700 | 12766 | uiout->text (_("unhandled Ada exceptions")); |
f7f9143b | 12767 | break; |
9f757bf7 XR |
12768 | |
12769 | case ada_catch_handlers: | |
bc18fbb5 | 12770 | if (!c->excep_string.empty ()) |
9f757bf7 XR |
12771 | { |
12772 | std::string info | |
12773 | = string_printf (_("`%s' Ada exception handlers"), | |
bc18fbb5 | 12774 | c->excep_string.c_str ()); |
9f757bf7 XR |
12775 | uiout->text (info.c_str ()); |
12776 | } | |
12777 | else | |
12778 | uiout->text (_("all Ada exceptions handlers")); | |
12779 | break; | |
12780 | ||
761269c8 | 12781 | case ada_catch_assert: |
112e8700 | 12782 | uiout->text (_("failed Ada assertions")); |
f7f9143b JB |
12783 | break; |
12784 | ||
12785 | default: | |
12786 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12787 | break; | |
12788 | } | |
12789 | } | |
12790 | ||
6149aea9 PA |
12791 | /* Implement the PRINT_RECREATE method in the breakpoint_ops structure |
12792 | for all exception catchpoint kinds. */ | |
12793 | ||
12794 | static void | |
761269c8 | 12795 | print_recreate_exception (enum ada_exception_catchpoint_kind ex, |
6149aea9 PA |
12796 | struct breakpoint *b, struct ui_file *fp) |
12797 | { | |
28010a5d PA |
12798 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
12799 | ||
6149aea9 PA |
12800 | switch (ex) |
12801 | { | |
761269c8 | 12802 | case ada_catch_exception: |
6149aea9 | 12803 | fprintf_filtered (fp, "catch exception"); |
bc18fbb5 TT |
12804 | if (!c->excep_string.empty ()) |
12805 | fprintf_filtered (fp, " %s", c->excep_string.c_str ()); | |
6149aea9 PA |
12806 | break; |
12807 | ||
761269c8 | 12808 | case ada_catch_exception_unhandled: |
78076abc | 12809 | fprintf_filtered (fp, "catch exception unhandled"); |
6149aea9 PA |
12810 | break; |
12811 | ||
9f757bf7 XR |
12812 | case ada_catch_handlers: |
12813 | fprintf_filtered (fp, "catch handlers"); | |
12814 | break; | |
12815 | ||
761269c8 | 12816 | case ada_catch_assert: |
6149aea9 PA |
12817 | fprintf_filtered (fp, "catch assert"); |
12818 | break; | |
12819 | ||
12820 | default: | |
12821 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12822 | } | |
d9b3f62e | 12823 | print_recreate_thread (b, fp); |
6149aea9 PA |
12824 | } |
12825 | ||
f7f9143b JB |
12826 | /* Virtual table for "catch exception" breakpoints. */ |
12827 | ||
28010a5d PA |
12828 | static struct bp_location * |
12829 | allocate_location_catch_exception (struct breakpoint *self) | |
12830 | { | |
761269c8 | 12831 | return allocate_location_exception (ada_catch_exception, self); |
28010a5d PA |
12832 | } |
12833 | ||
12834 | static void | |
12835 | re_set_catch_exception (struct breakpoint *b) | |
12836 | { | |
761269c8 | 12837 | re_set_exception (ada_catch_exception, b); |
28010a5d PA |
12838 | } |
12839 | ||
12840 | static void | |
12841 | check_status_catch_exception (bpstat bs) | |
12842 | { | |
761269c8 | 12843 | check_status_exception (ada_catch_exception, bs); |
28010a5d PA |
12844 | } |
12845 | ||
f7f9143b | 12846 | static enum print_stop_action |
348d480f | 12847 | print_it_catch_exception (bpstat bs) |
f7f9143b | 12848 | { |
761269c8 | 12849 | return print_it_exception (ada_catch_exception, bs); |
f7f9143b JB |
12850 | } |
12851 | ||
12852 | static void | |
a6d9a66e | 12853 | print_one_catch_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12854 | { |
761269c8 | 12855 | print_one_exception (ada_catch_exception, b, last_loc); |
f7f9143b JB |
12856 | } |
12857 | ||
12858 | static void | |
12859 | print_mention_catch_exception (struct breakpoint *b) | |
12860 | { | |
761269c8 | 12861 | print_mention_exception (ada_catch_exception, b); |
f7f9143b JB |
12862 | } |
12863 | ||
6149aea9 PA |
12864 | static void |
12865 | print_recreate_catch_exception (struct breakpoint *b, struct ui_file *fp) | |
12866 | { | |
761269c8 | 12867 | print_recreate_exception (ada_catch_exception, b, fp); |
6149aea9 PA |
12868 | } |
12869 | ||
2060206e | 12870 | static struct breakpoint_ops catch_exception_breakpoint_ops; |
f7f9143b JB |
12871 | |
12872 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
12873 | ||
28010a5d PA |
12874 | static struct bp_location * |
12875 | allocate_location_catch_exception_unhandled (struct breakpoint *self) | |
12876 | { | |
761269c8 | 12877 | return allocate_location_exception (ada_catch_exception_unhandled, self); |
28010a5d PA |
12878 | } |
12879 | ||
12880 | static void | |
12881 | re_set_catch_exception_unhandled (struct breakpoint *b) | |
12882 | { | |
761269c8 | 12883 | re_set_exception (ada_catch_exception_unhandled, b); |
28010a5d PA |
12884 | } |
12885 | ||
12886 | static void | |
12887 | check_status_catch_exception_unhandled (bpstat bs) | |
12888 | { | |
761269c8 | 12889 | check_status_exception (ada_catch_exception_unhandled, bs); |
28010a5d PA |
12890 | } |
12891 | ||
f7f9143b | 12892 | static enum print_stop_action |
348d480f | 12893 | print_it_catch_exception_unhandled (bpstat bs) |
f7f9143b | 12894 | { |
761269c8 | 12895 | return print_it_exception (ada_catch_exception_unhandled, bs); |
f7f9143b JB |
12896 | } |
12897 | ||
12898 | static void | |
a6d9a66e UW |
12899 | print_one_catch_exception_unhandled (struct breakpoint *b, |
12900 | struct bp_location **last_loc) | |
f7f9143b | 12901 | { |
761269c8 | 12902 | print_one_exception (ada_catch_exception_unhandled, b, last_loc); |
f7f9143b JB |
12903 | } |
12904 | ||
12905 | static void | |
12906 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
12907 | { | |
761269c8 | 12908 | print_mention_exception (ada_catch_exception_unhandled, b); |
f7f9143b JB |
12909 | } |
12910 | ||
6149aea9 PA |
12911 | static void |
12912 | print_recreate_catch_exception_unhandled (struct breakpoint *b, | |
12913 | struct ui_file *fp) | |
12914 | { | |
761269c8 | 12915 | print_recreate_exception (ada_catch_exception_unhandled, b, fp); |
6149aea9 PA |
12916 | } |
12917 | ||
2060206e | 12918 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops; |
f7f9143b JB |
12919 | |
12920 | /* Virtual table for "catch assert" breakpoints. */ | |
12921 | ||
28010a5d PA |
12922 | static struct bp_location * |
12923 | allocate_location_catch_assert (struct breakpoint *self) | |
12924 | { | |
761269c8 | 12925 | return allocate_location_exception (ada_catch_assert, self); |
28010a5d PA |
12926 | } |
12927 | ||
12928 | static void | |
12929 | re_set_catch_assert (struct breakpoint *b) | |
12930 | { | |
761269c8 | 12931 | re_set_exception (ada_catch_assert, b); |
28010a5d PA |
12932 | } |
12933 | ||
12934 | static void | |
12935 | check_status_catch_assert (bpstat bs) | |
12936 | { | |
761269c8 | 12937 | check_status_exception (ada_catch_assert, bs); |
28010a5d PA |
12938 | } |
12939 | ||
f7f9143b | 12940 | static enum print_stop_action |
348d480f | 12941 | print_it_catch_assert (bpstat bs) |
f7f9143b | 12942 | { |
761269c8 | 12943 | return print_it_exception (ada_catch_assert, bs); |
f7f9143b JB |
12944 | } |
12945 | ||
12946 | static void | |
a6d9a66e | 12947 | print_one_catch_assert (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12948 | { |
761269c8 | 12949 | print_one_exception (ada_catch_assert, b, last_loc); |
f7f9143b JB |
12950 | } |
12951 | ||
12952 | static void | |
12953 | print_mention_catch_assert (struct breakpoint *b) | |
12954 | { | |
761269c8 | 12955 | print_mention_exception (ada_catch_assert, b); |
f7f9143b JB |
12956 | } |
12957 | ||
6149aea9 PA |
12958 | static void |
12959 | print_recreate_catch_assert (struct breakpoint *b, struct ui_file *fp) | |
12960 | { | |
761269c8 | 12961 | print_recreate_exception (ada_catch_assert, b, fp); |
6149aea9 PA |
12962 | } |
12963 | ||
2060206e | 12964 | static struct breakpoint_ops catch_assert_breakpoint_ops; |
f7f9143b | 12965 | |
9f757bf7 XR |
12966 | /* Virtual table for "catch handlers" breakpoints. */ |
12967 | ||
12968 | static struct bp_location * | |
12969 | allocate_location_catch_handlers (struct breakpoint *self) | |
12970 | { | |
12971 | return allocate_location_exception (ada_catch_handlers, self); | |
12972 | } | |
12973 | ||
12974 | static void | |
12975 | re_set_catch_handlers (struct breakpoint *b) | |
12976 | { | |
12977 | re_set_exception (ada_catch_handlers, b); | |
12978 | } | |
12979 | ||
12980 | static void | |
12981 | check_status_catch_handlers (bpstat bs) | |
12982 | { | |
12983 | check_status_exception (ada_catch_handlers, bs); | |
12984 | } | |
12985 | ||
12986 | static enum print_stop_action | |
12987 | print_it_catch_handlers (bpstat bs) | |
12988 | { | |
12989 | return print_it_exception (ada_catch_handlers, bs); | |
12990 | } | |
12991 | ||
12992 | static void | |
12993 | print_one_catch_handlers (struct breakpoint *b, | |
12994 | struct bp_location **last_loc) | |
12995 | { | |
12996 | print_one_exception (ada_catch_handlers, b, last_loc); | |
12997 | } | |
12998 | ||
12999 | static void | |
13000 | print_mention_catch_handlers (struct breakpoint *b) | |
13001 | { | |
13002 | print_mention_exception (ada_catch_handlers, b); | |
13003 | } | |
13004 | ||
13005 | static void | |
13006 | print_recreate_catch_handlers (struct breakpoint *b, | |
13007 | struct ui_file *fp) | |
13008 | { | |
13009 | print_recreate_exception (ada_catch_handlers, b, fp); | |
13010 | } | |
13011 | ||
13012 | static struct breakpoint_ops catch_handlers_breakpoint_ops; | |
13013 | ||
f7f9143b JB |
13014 | /* Split the arguments specified in a "catch exception" command. |
13015 | Set EX to the appropriate catchpoint type. | |
28010a5d | 13016 | Set EXCEP_STRING to the name of the specific exception if |
5845583d | 13017 | specified by the user. |
9f757bf7 XR |
13018 | IS_CATCH_HANDLERS_CMD: True if the arguments are for a |
13019 | "catch handlers" command. False otherwise. | |
5845583d JB |
13020 | If a condition is found at the end of the arguments, the condition |
13021 | expression is stored in COND_STRING (memory must be deallocated | |
13022 | after use). Otherwise COND_STRING is set to NULL. */ | |
f7f9143b JB |
13023 | |
13024 | static void | |
a121b7c1 | 13025 | catch_ada_exception_command_split (const char *args, |
9f757bf7 | 13026 | bool is_catch_handlers_cmd, |
761269c8 | 13027 | enum ada_exception_catchpoint_kind *ex, |
bc18fbb5 TT |
13028 | std::string *excep_string, |
13029 | std::string *cond_string) | |
f7f9143b | 13030 | { |
bc18fbb5 | 13031 | std::string exception_name; |
f7f9143b | 13032 | |
bc18fbb5 TT |
13033 | exception_name = extract_arg (&args); |
13034 | if (exception_name == "if") | |
5845583d JB |
13035 | { |
13036 | /* This is not an exception name; this is the start of a condition | |
13037 | expression for a catchpoint on all exceptions. So, "un-get" | |
13038 | this token, and set exception_name to NULL. */ | |
bc18fbb5 | 13039 | exception_name.clear (); |
5845583d JB |
13040 | args -= 2; |
13041 | } | |
f7f9143b | 13042 | |
5845583d | 13043 | /* Check to see if we have a condition. */ |
f7f9143b | 13044 | |
f1735a53 | 13045 | args = skip_spaces (args); |
61012eef | 13046 | if (startswith (args, "if") |
5845583d JB |
13047 | && (isspace (args[2]) || args[2] == '\0')) |
13048 | { | |
13049 | args += 2; | |
f1735a53 | 13050 | args = skip_spaces (args); |
5845583d JB |
13051 | |
13052 | if (args[0] == '\0') | |
13053 | error (_("Condition missing after `if' keyword")); | |
bc18fbb5 | 13054 | *cond_string = args; |
5845583d JB |
13055 | |
13056 | args += strlen (args); | |
13057 | } | |
13058 | ||
13059 | /* Check that we do not have any more arguments. Anything else | |
13060 | is unexpected. */ | |
f7f9143b JB |
13061 | |
13062 | if (args[0] != '\0') | |
13063 | error (_("Junk at end of expression")); | |
13064 | ||
9f757bf7 XR |
13065 | if (is_catch_handlers_cmd) |
13066 | { | |
13067 | /* Catch handling of exceptions. */ | |
13068 | *ex = ada_catch_handlers; | |
13069 | *excep_string = exception_name; | |
13070 | } | |
bc18fbb5 | 13071 | else if (exception_name.empty ()) |
f7f9143b JB |
13072 | { |
13073 | /* Catch all exceptions. */ | |
761269c8 | 13074 | *ex = ada_catch_exception; |
bc18fbb5 | 13075 | excep_string->clear (); |
f7f9143b | 13076 | } |
bc18fbb5 | 13077 | else if (exception_name == "unhandled") |
f7f9143b JB |
13078 | { |
13079 | /* Catch unhandled exceptions. */ | |
761269c8 | 13080 | *ex = ada_catch_exception_unhandled; |
bc18fbb5 | 13081 | excep_string->clear (); |
f7f9143b JB |
13082 | } |
13083 | else | |
13084 | { | |
13085 | /* Catch a specific exception. */ | |
761269c8 | 13086 | *ex = ada_catch_exception; |
28010a5d | 13087 | *excep_string = exception_name; |
f7f9143b JB |
13088 | } |
13089 | } | |
13090 | ||
13091 | /* Return the name of the symbol on which we should break in order to | |
13092 | implement a catchpoint of the EX kind. */ | |
13093 | ||
13094 | static const char * | |
761269c8 | 13095 | ada_exception_sym_name (enum ada_exception_catchpoint_kind ex) |
f7f9143b | 13096 | { |
3eecfa55 JB |
13097 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
13098 | ||
13099 | gdb_assert (data->exception_info != NULL); | |
0259addd | 13100 | |
f7f9143b JB |
13101 | switch (ex) |
13102 | { | |
761269c8 | 13103 | case ada_catch_exception: |
3eecfa55 | 13104 | return (data->exception_info->catch_exception_sym); |
f7f9143b | 13105 | break; |
761269c8 | 13106 | case ada_catch_exception_unhandled: |
3eecfa55 | 13107 | return (data->exception_info->catch_exception_unhandled_sym); |
f7f9143b | 13108 | break; |
761269c8 | 13109 | case ada_catch_assert: |
3eecfa55 | 13110 | return (data->exception_info->catch_assert_sym); |
f7f9143b | 13111 | break; |
9f757bf7 XR |
13112 | case ada_catch_handlers: |
13113 | return (data->exception_info->catch_handlers_sym); | |
13114 | break; | |
f7f9143b JB |
13115 | default: |
13116 | internal_error (__FILE__, __LINE__, | |
13117 | _("unexpected catchpoint kind (%d)"), ex); | |
13118 | } | |
13119 | } | |
13120 | ||
13121 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
13122 | of the EX kind. */ | |
13123 | ||
c0a91b2b | 13124 | static const struct breakpoint_ops * |
761269c8 | 13125 | ada_exception_breakpoint_ops (enum ada_exception_catchpoint_kind ex) |
f7f9143b JB |
13126 | { |
13127 | switch (ex) | |
13128 | { | |
761269c8 | 13129 | case ada_catch_exception: |
f7f9143b JB |
13130 | return (&catch_exception_breakpoint_ops); |
13131 | break; | |
761269c8 | 13132 | case ada_catch_exception_unhandled: |
f7f9143b JB |
13133 | return (&catch_exception_unhandled_breakpoint_ops); |
13134 | break; | |
761269c8 | 13135 | case ada_catch_assert: |
f7f9143b JB |
13136 | return (&catch_assert_breakpoint_ops); |
13137 | break; | |
9f757bf7 XR |
13138 | case ada_catch_handlers: |
13139 | return (&catch_handlers_breakpoint_ops); | |
13140 | break; | |
f7f9143b JB |
13141 | default: |
13142 | internal_error (__FILE__, __LINE__, | |
13143 | _("unexpected catchpoint kind (%d)"), ex); | |
13144 | } | |
13145 | } | |
13146 | ||
13147 | /* Return the condition that will be used to match the current exception | |
13148 | being raised with the exception that the user wants to catch. This | |
13149 | assumes that this condition is used when the inferior just triggered | |
13150 | an exception catchpoint. | |
cb7de75e | 13151 | EX: the type of catchpoints used for catching Ada exceptions. */ |
f7f9143b | 13152 | |
cb7de75e | 13153 | static std::string |
9f757bf7 XR |
13154 | ada_exception_catchpoint_cond_string (const char *excep_string, |
13155 | enum ada_exception_catchpoint_kind ex) | |
f7f9143b | 13156 | { |
3d0b0fa3 | 13157 | int i; |
cb7de75e | 13158 | std::string result; |
2ff0a947 | 13159 | const char *name; |
9f757bf7 XR |
13160 | |
13161 | if (ex == ada_catch_handlers) | |
13162 | { | |
13163 | /* For exception handlers catchpoints, the condition string does | |
13164 | not use the same parameter as for the other exceptions. */ | |
2ff0a947 TT |
13165 | name = ("long_integer (GNAT_GCC_exception_Access" |
13166 | "(gcc_exception).all.occurrence.id)"); | |
9f757bf7 XR |
13167 | } |
13168 | else | |
2ff0a947 | 13169 | name = "long_integer (e)"; |
3d0b0fa3 | 13170 | |
0963b4bd | 13171 | /* The standard exceptions are a special case. They are defined in |
3d0b0fa3 | 13172 | runtime units that have been compiled without debugging info; if |
28010a5d | 13173 | EXCEP_STRING is the not-fully-qualified name of a standard |
3d0b0fa3 JB |
13174 | exception (e.g. "constraint_error") then, during the evaluation |
13175 | of the condition expression, the symbol lookup on this name would | |
0963b4bd | 13176 | *not* return this standard exception. The catchpoint condition |
3d0b0fa3 JB |
13177 | may then be set only on user-defined exceptions which have the |
13178 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
13179 | ||
13180 | To avoid this unexcepted behavior, these standard exceptions are | |
0963b4bd | 13181 | systematically prefixed by "standard". This means that "catch |
3d0b0fa3 JB |
13182 | exception constraint_error" is rewritten into "catch exception |
13183 | standard.constraint_error". | |
13184 | ||
13185 | If an exception named contraint_error is defined in another package of | |
13186 | the inferior program, then the only way to specify this exception as a | |
13187 | breakpoint condition is to use its fully-qualified named: | |
2ff0a947 TT |
13188 | e.g. my_package.constraint_error. |
13189 | ||
13190 | Furthermore, in some situations a standard exception's symbol may | |
13191 | be present in more than one objfile, because the compiler may | |
13192 | choose to emit copy relocations for them. So, we have to compare | |
13193 | against all the possible addresses. */ | |
3d0b0fa3 | 13194 | |
2ff0a947 TT |
13195 | /* Storage for a rewritten symbol name. */ |
13196 | std::string std_name; | |
3d0b0fa3 JB |
13197 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) |
13198 | { | |
28010a5d | 13199 | if (strcmp (standard_exc [i], excep_string) == 0) |
3d0b0fa3 | 13200 | { |
2ff0a947 TT |
13201 | std_name = std::string ("standard.") + excep_string; |
13202 | excep_string = std_name.c_str (); | |
9f757bf7 | 13203 | break; |
3d0b0fa3 JB |
13204 | } |
13205 | } | |
9f757bf7 | 13206 | |
2ff0a947 TT |
13207 | excep_string = ada_encode (excep_string); |
13208 | std::vector<struct bound_minimal_symbol> symbols | |
13209 | = ada_lookup_simple_minsyms (excep_string); | |
bde09ab7 | 13210 | for (const bound_minimal_symbol &msym : symbols) |
2ff0a947 TT |
13211 | { |
13212 | if (!result.empty ()) | |
13213 | result += " or "; | |
13214 | string_appendf (result, "%s = %s", name, | |
13215 | pulongest (BMSYMBOL_VALUE_ADDRESS (msym))); | |
13216 | } | |
9f757bf7 | 13217 | |
9f757bf7 | 13218 | return result; |
f7f9143b JB |
13219 | } |
13220 | ||
13221 | /* Return the symtab_and_line that should be used to insert an exception | |
13222 | catchpoint of the TYPE kind. | |
13223 | ||
28010a5d PA |
13224 | ADDR_STRING returns the name of the function where the real |
13225 | breakpoint that implements the catchpoints is set, depending on the | |
13226 | type of catchpoint we need to create. */ | |
f7f9143b JB |
13227 | |
13228 | static struct symtab_and_line | |
bc18fbb5 | 13229 | ada_exception_sal (enum ada_exception_catchpoint_kind ex, |
cc12f4a8 | 13230 | std::string *addr_string, const struct breakpoint_ops **ops) |
f7f9143b JB |
13231 | { |
13232 | const char *sym_name; | |
13233 | struct symbol *sym; | |
f7f9143b | 13234 | |
0259addd JB |
13235 | /* First, find out which exception support info to use. */ |
13236 | ada_exception_support_info_sniffer (); | |
13237 | ||
13238 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b | 13239 | the Ada exceptions requested by the user. */ |
f7f9143b JB |
13240 | sym_name = ada_exception_sym_name (ex); |
13241 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
13242 | ||
57aff202 JB |
13243 | if (sym == NULL) |
13244 | error (_("Catchpoint symbol not found: %s"), sym_name); | |
13245 | ||
13246 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
13247 | error (_("Unable to insert catchpoint. %s is not a function."), sym_name); | |
f7f9143b JB |
13248 | |
13249 | /* Set ADDR_STRING. */ | |
cc12f4a8 | 13250 | *addr_string = sym_name; |
f7f9143b | 13251 | |
f7f9143b | 13252 | /* Set OPS. */ |
4b9eee8c | 13253 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b | 13254 | |
f17011e0 | 13255 | return find_function_start_sal (sym, 1); |
f7f9143b JB |
13256 | } |
13257 | ||
b4a5b78b | 13258 | /* Create an Ada exception catchpoint. |
f7f9143b | 13259 | |
b4a5b78b | 13260 | EX_KIND is the kind of exception catchpoint to be created. |
5845583d | 13261 | |
bc18fbb5 | 13262 | If EXCEPT_STRING is empty, this catchpoint is expected to trigger |
2df4d1d5 | 13263 | for all exceptions. Otherwise, EXCEPT_STRING indicates the name |
bc18fbb5 | 13264 | of the exception to which this catchpoint applies. |
2df4d1d5 | 13265 | |
bc18fbb5 | 13266 | COND_STRING, if not empty, is the catchpoint condition. |
f7f9143b | 13267 | |
b4a5b78b JB |
13268 | TEMPFLAG, if nonzero, means that the underlying breakpoint |
13269 | should be temporary. | |
28010a5d | 13270 | |
b4a5b78b | 13271 | FROM_TTY is the usual argument passed to all commands implementations. */ |
28010a5d | 13272 | |
349774ef | 13273 | void |
28010a5d | 13274 | create_ada_exception_catchpoint (struct gdbarch *gdbarch, |
761269c8 | 13275 | enum ada_exception_catchpoint_kind ex_kind, |
bc18fbb5 | 13276 | const std::string &excep_string, |
56ecd069 | 13277 | const std::string &cond_string, |
28010a5d | 13278 | int tempflag, |
349774ef | 13279 | int disabled, |
28010a5d PA |
13280 | int from_tty) |
13281 | { | |
cc12f4a8 | 13282 | std::string addr_string; |
b4a5b78b | 13283 | const struct breakpoint_ops *ops = NULL; |
bc18fbb5 | 13284 | struct symtab_and_line sal = ada_exception_sal (ex_kind, &addr_string, &ops); |
28010a5d | 13285 | |
b270e6f9 | 13286 | std::unique_ptr<ada_catchpoint> c (new ada_catchpoint ()); |
cc12f4a8 | 13287 | init_ada_exception_breakpoint (c.get (), gdbarch, sal, addr_string.c_str (), |
349774ef | 13288 | ops, tempflag, disabled, from_tty); |
28010a5d | 13289 | c->excep_string = excep_string; |
9f757bf7 | 13290 | create_excep_cond_exprs (c.get (), ex_kind); |
56ecd069 XR |
13291 | if (!cond_string.empty ()) |
13292 | set_breakpoint_condition (c.get (), cond_string.c_str (), from_tty); | |
b270e6f9 | 13293 | install_breakpoint (0, std::move (c), 1); |
f7f9143b JB |
13294 | } |
13295 | ||
9ac4176b PA |
13296 | /* Implement the "catch exception" command. */ |
13297 | ||
13298 | static void | |
eb4c3f4a | 13299 | catch_ada_exception_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
13300 | struct cmd_list_element *command) |
13301 | { | |
a121b7c1 | 13302 | const char *arg = arg_entry; |
9ac4176b PA |
13303 | struct gdbarch *gdbarch = get_current_arch (); |
13304 | int tempflag; | |
761269c8 | 13305 | enum ada_exception_catchpoint_kind ex_kind; |
bc18fbb5 | 13306 | std::string excep_string; |
56ecd069 | 13307 | std::string cond_string; |
9ac4176b PA |
13308 | |
13309 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13310 | ||
13311 | if (!arg) | |
13312 | arg = ""; | |
9f757bf7 | 13313 | catch_ada_exception_command_split (arg, false, &ex_kind, &excep_string, |
bc18fbb5 | 13314 | &cond_string); |
9f757bf7 XR |
13315 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
13316 | excep_string, cond_string, | |
13317 | tempflag, 1 /* enabled */, | |
13318 | from_tty); | |
13319 | } | |
13320 | ||
13321 | /* Implement the "catch handlers" command. */ | |
13322 | ||
13323 | static void | |
13324 | catch_ada_handlers_command (const char *arg_entry, int from_tty, | |
13325 | struct cmd_list_element *command) | |
13326 | { | |
13327 | const char *arg = arg_entry; | |
13328 | struct gdbarch *gdbarch = get_current_arch (); | |
13329 | int tempflag; | |
13330 | enum ada_exception_catchpoint_kind ex_kind; | |
bc18fbb5 | 13331 | std::string excep_string; |
56ecd069 | 13332 | std::string cond_string; |
9f757bf7 XR |
13333 | |
13334 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13335 | ||
13336 | if (!arg) | |
13337 | arg = ""; | |
13338 | catch_ada_exception_command_split (arg, true, &ex_kind, &excep_string, | |
bc18fbb5 | 13339 | &cond_string); |
b4a5b78b JB |
13340 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
13341 | excep_string, cond_string, | |
349774ef JB |
13342 | tempflag, 1 /* enabled */, |
13343 | from_tty); | |
9ac4176b PA |
13344 | } |
13345 | ||
71bed2db TT |
13346 | /* Completion function for the Ada "catch" commands. */ |
13347 | ||
13348 | static void | |
13349 | catch_ada_completer (struct cmd_list_element *cmd, completion_tracker &tracker, | |
13350 | const char *text, const char *word) | |
13351 | { | |
13352 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (NULL); | |
13353 | ||
13354 | for (const ada_exc_info &info : exceptions) | |
13355 | { | |
13356 | if (startswith (info.name, word)) | |
13357 | tracker.add_completion | |
13358 | (gdb::unique_xmalloc_ptr<char> (xstrdup (info.name))); | |
13359 | } | |
13360 | } | |
13361 | ||
b4a5b78b | 13362 | /* Split the arguments specified in a "catch assert" command. |
5845583d | 13363 | |
b4a5b78b JB |
13364 | ARGS contains the command's arguments (or the empty string if |
13365 | no arguments were passed). | |
5845583d JB |
13366 | |
13367 | If ARGS contains a condition, set COND_STRING to that condition | |
b4a5b78b | 13368 | (the memory needs to be deallocated after use). */ |
5845583d | 13369 | |
b4a5b78b | 13370 | static void |
56ecd069 | 13371 | catch_ada_assert_command_split (const char *args, std::string &cond_string) |
f7f9143b | 13372 | { |
f1735a53 | 13373 | args = skip_spaces (args); |
f7f9143b | 13374 | |
5845583d | 13375 | /* Check whether a condition was provided. */ |
61012eef | 13376 | if (startswith (args, "if") |
5845583d | 13377 | && (isspace (args[2]) || args[2] == '\0')) |
f7f9143b | 13378 | { |
5845583d | 13379 | args += 2; |
f1735a53 | 13380 | args = skip_spaces (args); |
5845583d JB |
13381 | if (args[0] == '\0') |
13382 | error (_("condition missing after `if' keyword")); | |
56ecd069 | 13383 | cond_string.assign (args); |
f7f9143b JB |
13384 | } |
13385 | ||
5845583d JB |
13386 | /* Otherwise, there should be no other argument at the end of |
13387 | the command. */ | |
13388 | else if (args[0] != '\0') | |
13389 | error (_("Junk at end of arguments.")); | |
f7f9143b JB |
13390 | } |
13391 | ||
9ac4176b PA |
13392 | /* Implement the "catch assert" command. */ |
13393 | ||
13394 | static void | |
eb4c3f4a | 13395 | catch_assert_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
13396 | struct cmd_list_element *command) |
13397 | { | |
a121b7c1 | 13398 | const char *arg = arg_entry; |
9ac4176b PA |
13399 | struct gdbarch *gdbarch = get_current_arch (); |
13400 | int tempflag; | |
56ecd069 | 13401 | std::string cond_string; |
9ac4176b PA |
13402 | |
13403 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13404 | ||
13405 | if (!arg) | |
13406 | arg = ""; | |
56ecd069 | 13407 | catch_ada_assert_command_split (arg, cond_string); |
761269c8 | 13408 | create_ada_exception_catchpoint (gdbarch, ada_catch_assert, |
241db429 | 13409 | "", cond_string, |
349774ef JB |
13410 | tempflag, 1 /* enabled */, |
13411 | from_tty); | |
9ac4176b | 13412 | } |
778865d3 JB |
13413 | |
13414 | /* Return non-zero if the symbol SYM is an Ada exception object. */ | |
13415 | ||
13416 | static int | |
13417 | ada_is_exception_sym (struct symbol *sym) | |
13418 | { | |
a737d952 | 13419 | const char *type_name = TYPE_NAME (SYMBOL_TYPE (sym)); |
778865d3 JB |
13420 | |
13421 | return (SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
13422 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
13423 | && SYMBOL_CLASS (sym) != LOC_CONST | |
13424 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
13425 | && type_name != NULL && strcmp (type_name, "exception") == 0); | |
13426 | } | |
13427 | ||
13428 | /* Given a global symbol SYM, return non-zero iff SYM is a non-standard | |
13429 | Ada exception object. This matches all exceptions except the ones | |
13430 | defined by the Ada language. */ | |
13431 | ||
13432 | static int | |
13433 | ada_is_non_standard_exception_sym (struct symbol *sym) | |
13434 | { | |
13435 | int i; | |
13436 | ||
13437 | if (!ada_is_exception_sym (sym)) | |
13438 | return 0; | |
13439 | ||
13440 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
13441 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), standard_exc[i]) == 0) | |
13442 | return 0; /* A standard exception. */ | |
13443 | ||
13444 | /* Numeric_Error is also a standard exception, so exclude it. | |
13445 | See the STANDARD_EXC description for more details as to why | |
13446 | this exception is not listed in that array. */ | |
13447 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "numeric_error") == 0) | |
13448 | return 0; | |
13449 | ||
13450 | return 1; | |
13451 | } | |
13452 | ||
ab816a27 | 13453 | /* A helper function for std::sort, comparing two struct ada_exc_info |
778865d3 JB |
13454 | objects. |
13455 | ||
13456 | The comparison is determined first by exception name, and then | |
13457 | by exception address. */ | |
13458 | ||
ab816a27 | 13459 | bool |
cc536b21 | 13460 | ada_exc_info::operator< (const ada_exc_info &other) const |
778865d3 | 13461 | { |
778865d3 JB |
13462 | int result; |
13463 | ||
ab816a27 TT |
13464 | result = strcmp (name, other.name); |
13465 | if (result < 0) | |
13466 | return true; | |
13467 | if (result == 0 && addr < other.addr) | |
13468 | return true; | |
13469 | return false; | |
13470 | } | |
778865d3 | 13471 | |
ab816a27 | 13472 | bool |
cc536b21 | 13473 | ada_exc_info::operator== (const ada_exc_info &other) const |
ab816a27 TT |
13474 | { |
13475 | return addr == other.addr && strcmp (name, other.name) == 0; | |
778865d3 JB |
13476 | } |
13477 | ||
13478 | /* Sort EXCEPTIONS using compare_ada_exception_info as the comparison | |
13479 | routine, but keeping the first SKIP elements untouched. | |
13480 | ||
13481 | All duplicates are also removed. */ | |
13482 | ||
13483 | static void | |
ab816a27 | 13484 | sort_remove_dups_ada_exceptions_list (std::vector<ada_exc_info> *exceptions, |
778865d3 JB |
13485 | int skip) |
13486 | { | |
ab816a27 TT |
13487 | std::sort (exceptions->begin () + skip, exceptions->end ()); |
13488 | exceptions->erase (std::unique (exceptions->begin () + skip, exceptions->end ()), | |
13489 | exceptions->end ()); | |
778865d3 JB |
13490 | } |
13491 | ||
778865d3 JB |
13492 | /* Add all exceptions defined by the Ada standard whose name match |
13493 | a regular expression. | |
13494 | ||
13495 | If PREG is not NULL, then this regexp_t object is used to | |
13496 | perform the symbol name matching. Otherwise, no name-based | |
13497 | filtering is performed. | |
13498 | ||
13499 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13500 | gets pushed. */ | |
13501 | ||
13502 | static void | |
2d7cc5c7 | 13503 | ada_add_standard_exceptions (compiled_regex *preg, |
ab816a27 | 13504 | std::vector<ada_exc_info> *exceptions) |
778865d3 JB |
13505 | { |
13506 | int i; | |
13507 | ||
13508 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
13509 | { | |
13510 | if (preg == NULL | |
2d7cc5c7 | 13511 | || preg->exec (standard_exc[i], 0, NULL, 0) == 0) |
778865d3 JB |
13512 | { |
13513 | struct bound_minimal_symbol msymbol | |
13514 | = ada_lookup_simple_minsym (standard_exc[i]); | |
13515 | ||
13516 | if (msymbol.minsym != NULL) | |
13517 | { | |
13518 | struct ada_exc_info info | |
77e371c0 | 13519 | = {standard_exc[i], BMSYMBOL_VALUE_ADDRESS (msymbol)}; |
778865d3 | 13520 | |
ab816a27 | 13521 | exceptions->push_back (info); |
778865d3 JB |
13522 | } |
13523 | } | |
13524 | } | |
13525 | } | |
13526 | ||
13527 | /* Add all Ada exceptions defined locally and accessible from the given | |
13528 | FRAME. | |
13529 | ||
13530 | If PREG is not NULL, then this regexp_t object is used to | |
13531 | perform the symbol name matching. Otherwise, no name-based | |
13532 | filtering is performed. | |
13533 | ||
13534 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13535 | gets pushed. */ | |
13536 | ||
13537 | static void | |
2d7cc5c7 PA |
13538 | ada_add_exceptions_from_frame (compiled_regex *preg, |
13539 | struct frame_info *frame, | |
ab816a27 | 13540 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 13541 | { |
3977b71f | 13542 | const struct block *block = get_frame_block (frame, 0); |
778865d3 JB |
13543 | |
13544 | while (block != 0) | |
13545 | { | |
13546 | struct block_iterator iter; | |
13547 | struct symbol *sym; | |
13548 | ||
13549 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
13550 | { | |
13551 | switch (SYMBOL_CLASS (sym)) | |
13552 | { | |
13553 | case LOC_TYPEDEF: | |
13554 | case LOC_BLOCK: | |
13555 | case LOC_CONST: | |
13556 | break; | |
13557 | default: | |
13558 | if (ada_is_exception_sym (sym)) | |
13559 | { | |
13560 | struct ada_exc_info info = {SYMBOL_PRINT_NAME (sym), | |
13561 | SYMBOL_VALUE_ADDRESS (sym)}; | |
13562 | ||
ab816a27 | 13563 | exceptions->push_back (info); |
778865d3 JB |
13564 | } |
13565 | } | |
13566 | } | |
13567 | if (BLOCK_FUNCTION (block) != NULL) | |
13568 | break; | |
13569 | block = BLOCK_SUPERBLOCK (block); | |
13570 | } | |
13571 | } | |
13572 | ||
14bc53a8 PA |
13573 | /* Return true if NAME matches PREG or if PREG is NULL. */ |
13574 | ||
13575 | static bool | |
2d7cc5c7 | 13576 | name_matches_regex (const char *name, compiled_regex *preg) |
14bc53a8 PA |
13577 | { |
13578 | return (preg == NULL | |
2d7cc5c7 | 13579 | || preg->exec (ada_decode (name), 0, NULL, 0) == 0); |
14bc53a8 PA |
13580 | } |
13581 | ||
778865d3 JB |
13582 | /* Add all exceptions defined globally whose name name match |
13583 | a regular expression, excluding standard exceptions. | |
13584 | ||
13585 | The reason we exclude standard exceptions is that they need | |
13586 | to be handled separately: Standard exceptions are defined inside | |
13587 | a runtime unit which is normally not compiled with debugging info, | |
13588 | and thus usually do not show up in our symbol search. However, | |
13589 | if the unit was in fact built with debugging info, we need to | |
13590 | exclude them because they would duplicate the entry we found | |
13591 | during the special loop that specifically searches for those | |
13592 | standard exceptions. | |
13593 | ||
13594 | If PREG is not NULL, then this regexp_t object is used to | |
13595 | perform the symbol name matching. Otherwise, no name-based | |
13596 | filtering is performed. | |
13597 | ||
13598 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13599 | gets pushed. */ | |
13600 | ||
13601 | static void | |
2d7cc5c7 | 13602 | ada_add_global_exceptions (compiled_regex *preg, |
ab816a27 | 13603 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 13604 | { |
14bc53a8 PA |
13605 | /* In Ada, the symbol "search name" is a linkage name, whereas the |
13606 | regular expression used to do the matching refers to the natural | |
13607 | name. So match against the decoded name. */ | |
13608 | expand_symtabs_matching (NULL, | |
b5ec771e | 13609 | lookup_name_info::match_any (), |
14bc53a8 PA |
13610 | [&] (const char *search_name) |
13611 | { | |
13612 | const char *decoded = ada_decode (search_name); | |
13613 | return name_matches_regex (decoded, preg); | |
13614 | }, | |
13615 | NULL, | |
13616 | VARIABLES_DOMAIN); | |
778865d3 | 13617 | |
2030c079 | 13618 | for (objfile *objfile : current_program_space->objfiles ()) |
778865d3 | 13619 | { |
b669c953 | 13620 | for (compunit_symtab *s : objfile->compunits ()) |
778865d3 | 13621 | { |
d8aeb77f TT |
13622 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (s); |
13623 | int i; | |
778865d3 | 13624 | |
d8aeb77f TT |
13625 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
13626 | { | |
582942f4 | 13627 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
d8aeb77f TT |
13628 | struct block_iterator iter; |
13629 | struct symbol *sym; | |
778865d3 | 13630 | |
d8aeb77f TT |
13631 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
13632 | if (ada_is_non_standard_exception_sym (sym) | |
13633 | && name_matches_regex (SYMBOL_NATURAL_NAME (sym), preg)) | |
13634 | { | |
13635 | struct ada_exc_info info | |
13636 | = {SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE_ADDRESS (sym)}; | |
13637 | ||
13638 | exceptions->push_back (info); | |
13639 | } | |
13640 | } | |
778865d3 JB |
13641 | } |
13642 | } | |
13643 | } | |
13644 | ||
13645 | /* Implements ada_exceptions_list with the regular expression passed | |
13646 | as a regex_t, rather than a string. | |
13647 | ||
13648 | If not NULL, PREG is used to filter out exceptions whose names | |
13649 | do not match. Otherwise, all exceptions are listed. */ | |
13650 | ||
ab816a27 | 13651 | static std::vector<ada_exc_info> |
2d7cc5c7 | 13652 | ada_exceptions_list_1 (compiled_regex *preg) |
778865d3 | 13653 | { |
ab816a27 | 13654 | std::vector<ada_exc_info> result; |
778865d3 JB |
13655 | int prev_len; |
13656 | ||
13657 | /* First, list the known standard exceptions. These exceptions | |
13658 | need to be handled separately, as they are usually defined in | |
13659 | runtime units that have been compiled without debugging info. */ | |
13660 | ||
13661 | ada_add_standard_exceptions (preg, &result); | |
13662 | ||
13663 | /* Next, find all exceptions whose scope is local and accessible | |
13664 | from the currently selected frame. */ | |
13665 | ||
13666 | if (has_stack_frames ()) | |
13667 | { | |
ab816a27 | 13668 | prev_len = result.size (); |
778865d3 JB |
13669 | ada_add_exceptions_from_frame (preg, get_selected_frame (NULL), |
13670 | &result); | |
ab816a27 | 13671 | if (result.size () > prev_len) |
778865d3 JB |
13672 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13673 | } | |
13674 | ||
13675 | /* Add all exceptions whose scope is global. */ | |
13676 | ||
ab816a27 | 13677 | prev_len = result.size (); |
778865d3 | 13678 | ada_add_global_exceptions (preg, &result); |
ab816a27 | 13679 | if (result.size () > prev_len) |
778865d3 JB |
13680 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13681 | ||
778865d3 JB |
13682 | return result; |
13683 | } | |
13684 | ||
13685 | /* Return a vector of ada_exc_info. | |
13686 | ||
13687 | If REGEXP is NULL, all exceptions are included in the result. | |
13688 | Otherwise, it should contain a valid regular expression, | |
13689 | and only the exceptions whose names match that regular expression | |
13690 | are included in the result. | |
13691 | ||
13692 | The exceptions are sorted in the following order: | |
13693 | - Standard exceptions (defined by the Ada language), in | |
13694 | alphabetical order; | |
13695 | - Exceptions only visible from the current frame, in | |
13696 | alphabetical order; | |
13697 | - Exceptions whose scope is global, in alphabetical order. */ | |
13698 | ||
ab816a27 | 13699 | std::vector<ada_exc_info> |
778865d3 JB |
13700 | ada_exceptions_list (const char *regexp) |
13701 | { | |
2d7cc5c7 PA |
13702 | if (regexp == NULL) |
13703 | return ada_exceptions_list_1 (NULL); | |
778865d3 | 13704 | |
2d7cc5c7 PA |
13705 | compiled_regex reg (regexp, REG_NOSUB, _("invalid regular expression")); |
13706 | return ada_exceptions_list_1 (®); | |
778865d3 JB |
13707 | } |
13708 | ||
13709 | /* Implement the "info exceptions" command. */ | |
13710 | ||
13711 | static void | |
1d12d88f | 13712 | info_exceptions_command (const char *regexp, int from_tty) |
778865d3 | 13713 | { |
778865d3 | 13714 | struct gdbarch *gdbarch = get_current_arch (); |
778865d3 | 13715 | |
ab816a27 | 13716 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (regexp); |
778865d3 JB |
13717 | |
13718 | if (regexp != NULL) | |
13719 | printf_filtered | |
13720 | (_("All Ada exceptions matching regular expression \"%s\":\n"), regexp); | |
13721 | else | |
13722 | printf_filtered (_("All defined Ada exceptions:\n")); | |
13723 | ||
ab816a27 TT |
13724 | for (const ada_exc_info &info : exceptions) |
13725 | printf_filtered ("%s: %s\n", info.name, paddress (gdbarch, info.addr)); | |
778865d3 JB |
13726 | } |
13727 | ||
4c4b4cd2 PH |
13728 | /* Operators */ |
13729 | /* Information about operators given special treatment in functions | |
13730 | below. */ | |
13731 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
13732 | ||
13733 | #define ADA_OPERATORS \ | |
13734 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
13735 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
13736 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
13737 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
13738 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
13739 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
13740 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
13741 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
13742 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
13743 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
13744 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
13745 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
13746 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
13747 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
13748 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
13749 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
13750 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
13751 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
13752 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
13753 | |
13754 | static void | |
554794dc SDJ |
13755 | ada_operator_length (const struct expression *exp, int pc, int *oplenp, |
13756 | int *argsp) | |
4c4b4cd2 PH |
13757 | { |
13758 | switch (exp->elts[pc - 1].opcode) | |
13759 | { | |
76a01679 | 13760 | default: |
4c4b4cd2 PH |
13761 | operator_length_standard (exp, pc, oplenp, argsp); |
13762 | break; | |
13763 | ||
13764 | #define OP_DEFN(op, len, args, binop) \ | |
13765 | case op: *oplenp = len; *argsp = args; break; | |
13766 | ADA_OPERATORS; | |
13767 | #undef OP_DEFN | |
52ce6436 PH |
13768 | |
13769 | case OP_AGGREGATE: | |
13770 | *oplenp = 3; | |
13771 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
13772 | break; | |
13773 | ||
13774 | case OP_CHOICES: | |
13775 | *oplenp = 3; | |
13776 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
13777 | break; | |
4c4b4cd2 PH |
13778 | } |
13779 | } | |
13780 | ||
c0201579 JK |
13781 | /* Implementation of the exp_descriptor method operator_check. */ |
13782 | ||
13783 | static int | |
13784 | ada_operator_check (struct expression *exp, int pos, | |
13785 | int (*objfile_func) (struct objfile *objfile, void *data), | |
13786 | void *data) | |
13787 | { | |
13788 | const union exp_element *const elts = exp->elts; | |
13789 | struct type *type = NULL; | |
13790 | ||
13791 | switch (elts[pos].opcode) | |
13792 | { | |
13793 | case UNOP_IN_RANGE: | |
13794 | case UNOP_QUAL: | |
13795 | type = elts[pos + 1].type; | |
13796 | break; | |
13797 | ||
13798 | default: | |
13799 | return operator_check_standard (exp, pos, objfile_func, data); | |
13800 | } | |
13801 | ||
13802 | /* Invoke callbacks for TYPE and OBJFILE if they were set as non-NULL. */ | |
13803 | ||
13804 | if (type && TYPE_OBJFILE (type) | |
13805 | && (*objfile_func) (TYPE_OBJFILE (type), data)) | |
13806 | return 1; | |
13807 | ||
13808 | return 0; | |
13809 | } | |
13810 | ||
a121b7c1 | 13811 | static const char * |
4c4b4cd2 PH |
13812 | ada_op_name (enum exp_opcode opcode) |
13813 | { | |
13814 | switch (opcode) | |
13815 | { | |
76a01679 | 13816 | default: |
4c4b4cd2 | 13817 | return op_name_standard (opcode); |
52ce6436 | 13818 | |
4c4b4cd2 PH |
13819 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
13820 | ADA_OPERATORS; | |
13821 | #undef OP_DEFN | |
52ce6436 PH |
13822 | |
13823 | case OP_AGGREGATE: | |
13824 | return "OP_AGGREGATE"; | |
13825 | case OP_CHOICES: | |
13826 | return "OP_CHOICES"; | |
13827 | case OP_NAME: | |
13828 | return "OP_NAME"; | |
4c4b4cd2 PH |
13829 | } |
13830 | } | |
13831 | ||
13832 | /* As for operator_length, but assumes PC is pointing at the first | |
13833 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 13834 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
13835 | |
13836 | static void | |
76a01679 JB |
13837 | ada_forward_operator_length (struct expression *exp, int pc, |
13838 | int *oplenp, int *argsp) | |
4c4b4cd2 | 13839 | { |
76a01679 | 13840 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
13841 | { |
13842 | default: | |
13843 | *oplenp = *argsp = 0; | |
13844 | break; | |
52ce6436 | 13845 | |
4c4b4cd2 PH |
13846 | #define OP_DEFN(op, len, args, binop) \ |
13847 | case op: *oplenp = len; *argsp = args; break; | |
13848 | ADA_OPERATORS; | |
13849 | #undef OP_DEFN | |
52ce6436 PH |
13850 | |
13851 | case OP_AGGREGATE: | |
13852 | *oplenp = 3; | |
13853 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
13854 | break; | |
13855 | ||
13856 | case OP_CHOICES: | |
13857 | *oplenp = 3; | |
13858 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
13859 | break; | |
13860 | ||
13861 | case OP_STRING: | |
13862 | case OP_NAME: | |
13863 | { | |
13864 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
5b4ee69b | 13865 | |
52ce6436 PH |
13866 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); |
13867 | *argsp = 0; | |
13868 | break; | |
13869 | } | |
4c4b4cd2 PH |
13870 | } |
13871 | } | |
13872 | ||
13873 | static int | |
13874 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
13875 | { | |
13876 | enum exp_opcode op = exp->elts[elt].opcode; | |
13877 | int oplen, nargs; | |
13878 | int pc = elt; | |
13879 | int i; | |
76a01679 | 13880 | |
4c4b4cd2 PH |
13881 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
13882 | ||
76a01679 | 13883 | switch (op) |
4c4b4cd2 | 13884 | { |
76a01679 | 13885 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
13886 | case OP_ATR_FIRST: |
13887 | case OP_ATR_LAST: | |
13888 | case OP_ATR_LENGTH: | |
13889 | case OP_ATR_IMAGE: | |
13890 | case OP_ATR_MAX: | |
13891 | case OP_ATR_MIN: | |
13892 | case OP_ATR_MODULUS: | |
13893 | case OP_ATR_POS: | |
13894 | case OP_ATR_SIZE: | |
13895 | case OP_ATR_TAG: | |
13896 | case OP_ATR_VAL: | |
13897 | break; | |
13898 | ||
13899 | case UNOP_IN_RANGE: | |
13900 | case UNOP_QUAL: | |
323e0a4a AC |
13901 | /* XXX: gdb_sprint_host_address, type_sprint */ |
13902 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
13903 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
13904 | fprintf_filtered (stream, " ("); | |
13905 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
13906 | fprintf_filtered (stream, ")"); | |
13907 | break; | |
13908 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
13909 | fprintf_filtered (stream, " (%d)", |
13910 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
13911 | break; |
13912 | case TERNOP_IN_RANGE: | |
13913 | break; | |
13914 | ||
52ce6436 PH |
13915 | case OP_AGGREGATE: |
13916 | case OP_OTHERS: | |
13917 | case OP_DISCRETE_RANGE: | |
13918 | case OP_POSITIONAL: | |
13919 | case OP_CHOICES: | |
13920 | break; | |
13921 | ||
13922 | case OP_NAME: | |
13923 | case OP_STRING: | |
13924 | { | |
13925 | char *name = &exp->elts[elt + 2].string; | |
13926 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
5b4ee69b | 13927 | |
52ce6436 PH |
13928 | fprintf_filtered (stream, "Text: `%.*s'", len, name); |
13929 | break; | |
13930 | } | |
13931 | ||
4c4b4cd2 PH |
13932 | default: |
13933 | return dump_subexp_body_standard (exp, stream, elt); | |
13934 | } | |
13935 | ||
13936 | elt += oplen; | |
13937 | for (i = 0; i < nargs; i += 1) | |
13938 | elt = dump_subexp (exp, stream, elt); | |
13939 | ||
13940 | return elt; | |
13941 | } | |
13942 | ||
13943 | /* The Ada extension of print_subexp (q.v.). */ | |
13944 | ||
76a01679 JB |
13945 | static void |
13946 | ada_print_subexp (struct expression *exp, int *pos, | |
13947 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 13948 | { |
52ce6436 | 13949 | int oplen, nargs, i; |
4c4b4cd2 PH |
13950 | int pc = *pos; |
13951 | enum exp_opcode op = exp->elts[pc].opcode; | |
13952 | ||
13953 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
13954 | ||
52ce6436 | 13955 | *pos += oplen; |
4c4b4cd2 PH |
13956 | switch (op) |
13957 | { | |
13958 | default: | |
52ce6436 | 13959 | *pos -= oplen; |
4c4b4cd2 PH |
13960 | print_subexp_standard (exp, pos, stream, prec); |
13961 | return; | |
13962 | ||
13963 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
13964 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
13965 | return; | |
13966 | ||
13967 | case BINOP_IN_BOUNDS: | |
323e0a4a | 13968 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 13969 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 13970 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 13971 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 13972 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 13973 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
13974 | fprintf_filtered (stream, "(%ld)", |
13975 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
13976 | return; |
13977 | ||
13978 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 13979 | if (prec >= PREC_EQUAL) |
76a01679 | 13980 | fputs_filtered ("(", stream); |
323e0a4a | 13981 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 13982 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 13983 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
13984 | print_subexp (exp, pos, stream, PREC_EQUAL); |
13985 | fputs_filtered (" .. ", stream); | |
13986 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
13987 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
13988 | fputs_filtered (")", stream); |
13989 | return; | |
4c4b4cd2 PH |
13990 | |
13991 | case OP_ATR_FIRST: | |
13992 | case OP_ATR_LAST: | |
13993 | case OP_ATR_LENGTH: | |
13994 | case OP_ATR_IMAGE: | |
13995 | case OP_ATR_MAX: | |
13996 | case OP_ATR_MIN: | |
13997 | case OP_ATR_MODULUS: | |
13998 | case OP_ATR_POS: | |
13999 | case OP_ATR_SIZE: | |
14000 | case OP_ATR_TAG: | |
14001 | case OP_ATR_VAL: | |
4c4b4cd2 | 14002 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
14003 | { |
14004 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
79d43c61 TT |
14005 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0, |
14006 | &type_print_raw_options); | |
76a01679 JB |
14007 | *pos += 3; |
14008 | } | |
4c4b4cd2 | 14009 | else |
76a01679 | 14010 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
14011 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
14012 | if (nargs > 1) | |
76a01679 JB |
14013 | { |
14014 | int tem; | |
5b4ee69b | 14015 | |
76a01679 JB |
14016 | for (tem = 1; tem < nargs; tem += 1) |
14017 | { | |
14018 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
14019 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
14020 | } | |
14021 | fputs_filtered (")", stream); | |
14022 | } | |
4c4b4cd2 | 14023 | return; |
14f9c5c9 | 14024 | |
4c4b4cd2 | 14025 | case UNOP_QUAL: |
4c4b4cd2 PH |
14026 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
14027 | fputs_filtered ("'(", stream); | |
14028 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
14029 | fputs_filtered (")", stream); | |
14030 | return; | |
14f9c5c9 | 14031 | |
4c4b4cd2 | 14032 | case UNOP_IN_RANGE: |
323e0a4a | 14033 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 14034 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 14035 | fputs_filtered (" in ", stream); |
79d43c61 TT |
14036 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0, |
14037 | &type_print_raw_options); | |
4c4b4cd2 | 14038 | return; |
52ce6436 PH |
14039 | |
14040 | case OP_DISCRETE_RANGE: | |
14041 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14042 | fputs_filtered ("..", stream); | |
14043 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14044 | return; | |
14045 | ||
14046 | case OP_OTHERS: | |
14047 | fputs_filtered ("others => ", stream); | |
14048 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14049 | return; | |
14050 | ||
14051 | case OP_CHOICES: | |
14052 | for (i = 0; i < nargs-1; i += 1) | |
14053 | { | |
14054 | if (i > 0) | |
14055 | fputs_filtered ("|", stream); | |
14056 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14057 | } | |
14058 | fputs_filtered (" => ", stream); | |
14059 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14060 | return; | |
14061 | ||
14062 | case OP_POSITIONAL: | |
14063 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14064 | return; | |
14065 | ||
14066 | case OP_AGGREGATE: | |
14067 | fputs_filtered ("(", stream); | |
14068 | for (i = 0; i < nargs; i += 1) | |
14069 | { | |
14070 | if (i > 0) | |
14071 | fputs_filtered (", ", stream); | |
14072 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14073 | } | |
14074 | fputs_filtered (")", stream); | |
14075 | return; | |
4c4b4cd2 PH |
14076 | } |
14077 | } | |
14f9c5c9 AS |
14078 | |
14079 | /* Table mapping opcodes into strings for printing operators | |
14080 | and precedences of the operators. */ | |
14081 | ||
d2e4a39e AS |
14082 | static const struct op_print ada_op_print_tab[] = { |
14083 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
14084 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
14085 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
14086 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
14087 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
14088 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
14089 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
14090 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
14091 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
14092 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
14093 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
14094 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
14095 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
14096 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
14097 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
14098 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
14099 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
14100 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
14101 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
14102 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
14103 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
14104 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
14105 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
14106 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
14107 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
14108 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
14109 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
14110 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
14111 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
14112 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
14113 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
f486487f | 14114 | {NULL, OP_NULL, PREC_SUFFIX, 0} |
14f9c5c9 AS |
14115 | }; |
14116 | \f | |
72d5681a PH |
14117 | enum ada_primitive_types { |
14118 | ada_primitive_type_int, | |
14119 | ada_primitive_type_long, | |
14120 | ada_primitive_type_short, | |
14121 | ada_primitive_type_char, | |
14122 | ada_primitive_type_float, | |
14123 | ada_primitive_type_double, | |
14124 | ada_primitive_type_void, | |
14125 | ada_primitive_type_long_long, | |
14126 | ada_primitive_type_long_double, | |
14127 | ada_primitive_type_natural, | |
14128 | ada_primitive_type_positive, | |
14129 | ada_primitive_type_system_address, | |
08f49010 | 14130 | ada_primitive_type_storage_offset, |
72d5681a PH |
14131 | nr_ada_primitive_types |
14132 | }; | |
6c038f32 PH |
14133 | |
14134 | static void | |
d4a9a881 | 14135 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
14136 | struct language_arch_info *lai) |
14137 | { | |
d4a9a881 | 14138 | const struct builtin_type *builtin = builtin_type (gdbarch); |
5b4ee69b | 14139 | |
72d5681a | 14140 | lai->primitive_type_vector |
d4a9a881 | 14141 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a | 14142 | struct type *); |
e9bb382b UW |
14143 | |
14144 | lai->primitive_type_vector [ada_primitive_type_int] | |
14145 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14146 | 0, "integer"); | |
14147 | lai->primitive_type_vector [ada_primitive_type_long] | |
14148 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
14149 | 0, "long_integer"); | |
14150 | lai->primitive_type_vector [ada_primitive_type_short] | |
14151 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
14152 | 0, "short_integer"); | |
14153 | lai->string_char_type | |
14154 | = lai->primitive_type_vector [ada_primitive_type_char] | |
cd7c1778 | 14155 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); |
e9bb382b UW |
14156 | lai->primitive_type_vector [ada_primitive_type_float] |
14157 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
49f190bc | 14158 | "float", gdbarch_float_format (gdbarch)); |
e9bb382b UW |
14159 | lai->primitive_type_vector [ada_primitive_type_double] |
14160 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
49f190bc | 14161 | "long_float", gdbarch_double_format (gdbarch)); |
e9bb382b UW |
14162 | lai->primitive_type_vector [ada_primitive_type_long_long] |
14163 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
14164 | 0, "long_long_integer"); | |
14165 | lai->primitive_type_vector [ada_primitive_type_long_double] | |
5f3bceb6 | 14166 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
49f190bc | 14167 | "long_long_float", gdbarch_long_double_format (gdbarch)); |
e9bb382b UW |
14168 | lai->primitive_type_vector [ada_primitive_type_natural] |
14169 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14170 | 0, "natural"); | |
14171 | lai->primitive_type_vector [ada_primitive_type_positive] | |
14172 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14173 | 0, "positive"); | |
14174 | lai->primitive_type_vector [ada_primitive_type_void] | |
14175 | = builtin->builtin_void; | |
14176 | ||
14177 | lai->primitive_type_vector [ada_primitive_type_system_address] | |
77b7c781 UW |
14178 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, |
14179 | "void")); | |
72d5681a PH |
14180 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
14181 | = "system__address"; | |
fbb06eb1 | 14182 | |
08f49010 XR |
14183 | /* Create the equivalent of the System.Storage_Elements.Storage_Offset |
14184 | type. This is a signed integral type whose size is the same as | |
14185 | the size of addresses. */ | |
14186 | { | |
14187 | unsigned int addr_length = TYPE_LENGTH | |
14188 | (lai->primitive_type_vector [ada_primitive_type_system_address]); | |
14189 | ||
14190 | lai->primitive_type_vector [ada_primitive_type_storage_offset] | |
14191 | = arch_integer_type (gdbarch, addr_length * HOST_CHAR_BIT, 0, | |
14192 | "storage_offset"); | |
14193 | } | |
14194 | ||
47e729a8 | 14195 | lai->bool_type_symbol = NULL; |
fbb06eb1 | 14196 | lai->bool_type_default = builtin->builtin_bool; |
6c038f32 | 14197 | } |
6c038f32 PH |
14198 | \f |
14199 | /* Language vector */ | |
14200 | ||
14201 | /* Not really used, but needed in the ada_language_defn. */ | |
14202 | ||
14203 | static void | |
6c7a06a3 | 14204 | emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
6c038f32 | 14205 | { |
6c7a06a3 | 14206 | ada_emit_char (c, type, stream, quoter, 1); |
6c038f32 PH |
14207 | } |
14208 | ||
14209 | static int | |
410a0ff2 | 14210 | parse (struct parser_state *ps) |
6c038f32 PH |
14211 | { |
14212 | warnings_issued = 0; | |
410a0ff2 | 14213 | return ada_parse (ps); |
6c038f32 PH |
14214 | } |
14215 | ||
14216 | static const struct exp_descriptor ada_exp_descriptor = { | |
14217 | ada_print_subexp, | |
14218 | ada_operator_length, | |
c0201579 | 14219 | ada_operator_check, |
6c038f32 PH |
14220 | ada_op_name, |
14221 | ada_dump_subexp_body, | |
14222 | ada_evaluate_subexp | |
14223 | }; | |
14224 | ||
b5ec771e PA |
14225 | /* symbol_name_matcher_ftype adapter for wild_match. */ |
14226 | ||
14227 | static bool | |
14228 | do_wild_match (const char *symbol_search_name, | |
14229 | const lookup_name_info &lookup_name, | |
a207cff2 | 14230 | completion_match_result *comp_match_res) |
b5ec771e PA |
14231 | { |
14232 | return wild_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
14233 | } | |
14234 | ||
14235 | /* symbol_name_matcher_ftype adapter for full_match. */ | |
14236 | ||
14237 | static bool | |
14238 | do_full_match (const char *symbol_search_name, | |
14239 | const lookup_name_info &lookup_name, | |
a207cff2 | 14240 | completion_match_result *comp_match_res) |
b5ec771e PA |
14241 | { |
14242 | return full_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
14243 | } | |
14244 | ||
a2cd4f14 JB |
14245 | /* symbol_name_matcher_ftype for exact (verbatim) matches. */ |
14246 | ||
14247 | static bool | |
14248 | do_exact_match (const char *symbol_search_name, | |
14249 | const lookup_name_info &lookup_name, | |
14250 | completion_match_result *comp_match_res) | |
14251 | { | |
14252 | return strcmp (symbol_search_name, ada_lookup_name (lookup_name)) == 0; | |
14253 | } | |
14254 | ||
b5ec771e PA |
14255 | /* Build the Ada lookup name for LOOKUP_NAME. */ |
14256 | ||
14257 | ada_lookup_name_info::ada_lookup_name_info (const lookup_name_info &lookup_name) | |
14258 | { | |
14259 | const std::string &user_name = lookup_name.name (); | |
14260 | ||
14261 | if (user_name[0] == '<') | |
14262 | { | |
14263 | if (user_name.back () == '>') | |
14264 | m_encoded_name = user_name.substr (1, user_name.size () - 2); | |
14265 | else | |
14266 | m_encoded_name = user_name.substr (1, user_name.size () - 1); | |
14267 | m_encoded_p = true; | |
14268 | m_verbatim_p = true; | |
14269 | m_wild_match_p = false; | |
14270 | m_standard_p = false; | |
14271 | } | |
14272 | else | |
14273 | { | |
14274 | m_verbatim_p = false; | |
14275 | ||
14276 | m_encoded_p = user_name.find ("__") != std::string::npos; | |
14277 | ||
14278 | if (!m_encoded_p) | |
14279 | { | |
14280 | const char *folded = ada_fold_name (user_name.c_str ()); | |
14281 | const char *encoded = ada_encode_1 (folded, false); | |
14282 | if (encoded != NULL) | |
14283 | m_encoded_name = encoded; | |
14284 | else | |
14285 | m_encoded_name = user_name; | |
14286 | } | |
14287 | else | |
14288 | m_encoded_name = user_name; | |
14289 | ||
14290 | /* Handle the 'package Standard' special case. See description | |
14291 | of m_standard_p. */ | |
14292 | if (startswith (m_encoded_name.c_str (), "standard__")) | |
14293 | { | |
14294 | m_encoded_name = m_encoded_name.substr (sizeof ("standard__") - 1); | |
14295 | m_standard_p = true; | |
14296 | } | |
14297 | else | |
14298 | m_standard_p = false; | |
74ccd7f5 | 14299 | |
b5ec771e PA |
14300 | /* If the name contains a ".", then the user is entering a fully |
14301 | qualified entity name, and the match must not be done in wild | |
14302 | mode. Similarly, if the user wants to complete what looks | |
14303 | like an encoded name, the match must not be done in wild | |
14304 | mode. Also, in the standard__ special case always do | |
14305 | non-wild matching. */ | |
14306 | m_wild_match_p | |
14307 | = (lookup_name.match_type () != symbol_name_match_type::FULL | |
14308 | && !m_encoded_p | |
14309 | && !m_standard_p | |
14310 | && user_name.find ('.') == std::string::npos); | |
14311 | } | |
14312 | } | |
14313 | ||
14314 | /* symbol_name_matcher_ftype method for Ada. This only handles | |
14315 | completion mode. */ | |
14316 | ||
14317 | static bool | |
14318 | ada_symbol_name_matches (const char *symbol_search_name, | |
14319 | const lookup_name_info &lookup_name, | |
a207cff2 | 14320 | completion_match_result *comp_match_res) |
74ccd7f5 | 14321 | { |
b5ec771e PA |
14322 | return lookup_name.ada ().matches (symbol_search_name, |
14323 | lookup_name.match_type (), | |
a207cff2 | 14324 | comp_match_res); |
b5ec771e PA |
14325 | } |
14326 | ||
de63c46b PA |
14327 | /* A name matcher that matches the symbol name exactly, with |
14328 | strcmp. */ | |
14329 | ||
14330 | static bool | |
14331 | literal_symbol_name_matcher (const char *symbol_search_name, | |
14332 | const lookup_name_info &lookup_name, | |
14333 | completion_match_result *comp_match_res) | |
14334 | { | |
14335 | const std::string &name = lookup_name.name (); | |
14336 | ||
14337 | int cmp = (lookup_name.completion_mode () | |
14338 | ? strncmp (symbol_search_name, name.c_str (), name.size ()) | |
14339 | : strcmp (symbol_search_name, name.c_str ())); | |
14340 | if (cmp == 0) | |
14341 | { | |
14342 | if (comp_match_res != NULL) | |
14343 | comp_match_res->set_match (symbol_search_name); | |
14344 | return true; | |
14345 | } | |
14346 | else | |
14347 | return false; | |
14348 | } | |
14349 | ||
b5ec771e PA |
14350 | /* Implement the "la_get_symbol_name_matcher" language_defn method for |
14351 | Ada. */ | |
14352 | ||
14353 | static symbol_name_matcher_ftype * | |
14354 | ada_get_symbol_name_matcher (const lookup_name_info &lookup_name) | |
14355 | { | |
de63c46b PA |
14356 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
14357 | return literal_symbol_name_matcher; | |
14358 | ||
b5ec771e PA |
14359 | if (lookup_name.completion_mode ()) |
14360 | return ada_symbol_name_matches; | |
74ccd7f5 | 14361 | else |
b5ec771e PA |
14362 | { |
14363 | if (lookup_name.ada ().wild_match_p ()) | |
14364 | return do_wild_match; | |
a2cd4f14 JB |
14365 | else if (lookup_name.ada ().verbatim_p ()) |
14366 | return do_exact_match; | |
b5ec771e PA |
14367 | else |
14368 | return do_full_match; | |
14369 | } | |
74ccd7f5 JB |
14370 | } |
14371 | ||
a5ee536b JB |
14372 | /* Implement the "la_read_var_value" language_defn method for Ada. */ |
14373 | ||
14374 | static struct value * | |
63e43d3a PMR |
14375 | ada_read_var_value (struct symbol *var, const struct block *var_block, |
14376 | struct frame_info *frame) | |
a5ee536b | 14377 | { |
3977b71f | 14378 | const struct block *frame_block = NULL; |
a5ee536b JB |
14379 | struct symbol *renaming_sym = NULL; |
14380 | ||
14381 | /* The only case where default_read_var_value is not sufficient | |
14382 | is when VAR is a renaming... */ | |
14383 | if (frame) | |
14384 | frame_block = get_frame_block (frame, NULL); | |
14385 | if (frame_block) | |
14386 | renaming_sym = ada_find_renaming_symbol (var, frame_block); | |
14387 | if (renaming_sym != NULL) | |
14388 | return ada_read_renaming_var_value (renaming_sym, frame_block); | |
14389 | ||
14390 | /* This is a typical case where we expect the default_read_var_value | |
14391 | function to work. */ | |
63e43d3a | 14392 | return default_read_var_value (var, var_block, frame); |
a5ee536b JB |
14393 | } |
14394 | ||
56618e20 TT |
14395 | static const char *ada_extensions[] = |
14396 | { | |
14397 | ".adb", ".ads", ".a", ".ada", ".dg", NULL | |
14398 | }; | |
14399 | ||
47e77640 | 14400 | extern const struct language_defn ada_language_defn = { |
6c038f32 | 14401 | "ada", /* Language name */ |
6abde28f | 14402 | "Ada", |
6c038f32 | 14403 | language_ada, |
6c038f32 | 14404 | range_check_off, |
6c038f32 PH |
14405 | case_sensitive_on, /* Yes, Ada is case-insensitive, but |
14406 | that's not quite what this means. */ | |
6c038f32 | 14407 | array_row_major, |
9a044a89 | 14408 | macro_expansion_no, |
56618e20 | 14409 | ada_extensions, |
6c038f32 PH |
14410 | &ada_exp_descriptor, |
14411 | parse, | |
6c038f32 PH |
14412 | resolve, |
14413 | ada_printchar, /* Print a character constant */ | |
14414 | ada_printstr, /* Function to print string constant */ | |
14415 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 | 14416 | ada_print_type, /* Print a type using appropriate syntax */ |
be942545 | 14417 | ada_print_typedef, /* Print a typedef using appropriate syntax */ |
6c038f32 PH |
14418 | ada_val_print, /* Print a value using appropriate syntax */ |
14419 | ada_value_print, /* Print a top-level value */ | |
a5ee536b | 14420 | ada_read_var_value, /* la_read_var_value */ |
6c038f32 | 14421 | NULL, /* Language specific skip_trampoline */ |
2b2d9e11 | 14422 | NULL, /* name_of_this */ |
59cc4834 | 14423 | true, /* la_store_sym_names_in_linkage_form_p */ |
6c038f32 PH |
14424 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
14425 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
14426 | ada_la_decode, /* Language specific symbol demangler */ | |
8b302db8 | 14427 | ada_sniff_from_mangled_name, |
0963b4bd MS |
14428 | NULL, /* Language specific |
14429 | class_name_from_physname */ | |
6c038f32 PH |
14430 | ada_op_print_tab, /* expression operators for printing */ |
14431 | 0, /* c-style arrays */ | |
14432 | 1, /* String lower bound */ | |
6c038f32 | 14433 | ada_get_gdb_completer_word_break_characters, |
eb3ff9a5 | 14434 | ada_collect_symbol_completion_matches, |
72d5681a | 14435 | ada_language_arch_info, |
e79af960 | 14436 | ada_print_array_index, |
41f1b697 | 14437 | default_pass_by_reference, |
ae6a3a4c | 14438 | c_get_string, |
e2b7af72 | 14439 | ada_watch_location_expression, |
b5ec771e | 14440 | ada_get_symbol_name_matcher, /* la_get_symbol_name_matcher */ |
f8eba3c6 | 14441 | ada_iterate_over_symbols, |
5ffa0793 | 14442 | default_search_name_hash, |
a53b64ea | 14443 | &ada_varobj_ops, |
bb2ec1b3 | 14444 | NULL, |
721b08c6 | 14445 | NULL, |
4be290b2 | 14446 | ada_is_string_type, |
721b08c6 | 14447 | "(...)" /* la_struct_too_deep_ellipsis */ |
6c038f32 PH |
14448 | }; |
14449 | ||
5bf03f13 JB |
14450 | /* Command-list for the "set/show ada" prefix command. */ |
14451 | static struct cmd_list_element *set_ada_list; | |
14452 | static struct cmd_list_element *show_ada_list; | |
14453 | ||
14454 | /* Implement the "set ada" prefix command. */ | |
14455 | ||
14456 | static void | |
981a3fb3 | 14457 | set_ada_command (const char *arg, int from_tty) |
5bf03f13 JB |
14458 | { |
14459 | printf_unfiltered (_(\ | |
14460 | "\"set ada\" must be followed by the name of a setting.\n")); | |
635c7e8a | 14461 | help_list (set_ada_list, "set ada ", all_commands, gdb_stdout); |
5bf03f13 JB |
14462 | } |
14463 | ||
14464 | /* Implement the "show ada" prefix command. */ | |
14465 | ||
14466 | static void | |
981a3fb3 | 14467 | show_ada_command (const char *args, int from_tty) |
5bf03f13 JB |
14468 | { |
14469 | cmd_show_list (show_ada_list, from_tty, ""); | |
14470 | } | |
14471 | ||
2060206e PA |
14472 | static void |
14473 | initialize_ada_catchpoint_ops (void) | |
14474 | { | |
14475 | struct breakpoint_ops *ops; | |
14476 | ||
14477 | initialize_breakpoint_ops (); | |
14478 | ||
14479 | ops = &catch_exception_breakpoint_ops; | |
14480 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14481 | ops->allocate_location = allocate_location_catch_exception; |
14482 | ops->re_set = re_set_catch_exception; | |
14483 | ops->check_status = check_status_catch_exception; | |
14484 | ops->print_it = print_it_catch_exception; | |
14485 | ops->print_one = print_one_catch_exception; | |
14486 | ops->print_mention = print_mention_catch_exception; | |
14487 | ops->print_recreate = print_recreate_catch_exception; | |
14488 | ||
14489 | ops = &catch_exception_unhandled_breakpoint_ops; | |
14490 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14491 | ops->allocate_location = allocate_location_catch_exception_unhandled; |
14492 | ops->re_set = re_set_catch_exception_unhandled; | |
14493 | ops->check_status = check_status_catch_exception_unhandled; | |
14494 | ops->print_it = print_it_catch_exception_unhandled; | |
14495 | ops->print_one = print_one_catch_exception_unhandled; | |
14496 | ops->print_mention = print_mention_catch_exception_unhandled; | |
14497 | ops->print_recreate = print_recreate_catch_exception_unhandled; | |
14498 | ||
14499 | ops = &catch_assert_breakpoint_ops; | |
14500 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14501 | ops->allocate_location = allocate_location_catch_assert; |
14502 | ops->re_set = re_set_catch_assert; | |
14503 | ops->check_status = check_status_catch_assert; | |
14504 | ops->print_it = print_it_catch_assert; | |
14505 | ops->print_one = print_one_catch_assert; | |
14506 | ops->print_mention = print_mention_catch_assert; | |
14507 | ops->print_recreate = print_recreate_catch_assert; | |
9f757bf7 XR |
14508 | |
14509 | ops = &catch_handlers_breakpoint_ops; | |
14510 | *ops = bkpt_breakpoint_ops; | |
14511 | ops->allocate_location = allocate_location_catch_handlers; | |
14512 | ops->re_set = re_set_catch_handlers; | |
14513 | ops->check_status = check_status_catch_handlers; | |
14514 | ops->print_it = print_it_catch_handlers; | |
14515 | ops->print_one = print_one_catch_handlers; | |
14516 | ops->print_mention = print_mention_catch_handlers; | |
14517 | ops->print_recreate = print_recreate_catch_handlers; | |
2060206e PA |
14518 | } |
14519 | ||
3d9434b5 JB |
14520 | /* This module's 'new_objfile' observer. */ |
14521 | ||
14522 | static void | |
14523 | ada_new_objfile_observer (struct objfile *objfile) | |
14524 | { | |
14525 | ada_clear_symbol_cache (); | |
14526 | } | |
14527 | ||
14528 | /* This module's 'free_objfile' observer. */ | |
14529 | ||
14530 | static void | |
14531 | ada_free_objfile_observer (struct objfile *objfile) | |
14532 | { | |
14533 | ada_clear_symbol_cache (); | |
14534 | } | |
14535 | ||
d2e4a39e | 14536 | void |
6c038f32 | 14537 | _initialize_ada_language (void) |
14f9c5c9 | 14538 | { |
2060206e PA |
14539 | initialize_ada_catchpoint_ops (); |
14540 | ||
5bf03f13 | 14541 | add_prefix_cmd ("ada", no_class, set_ada_command, |
470678d7 | 14542 | _("Prefix command for changing Ada-specific settings"), |
5bf03f13 JB |
14543 | &set_ada_list, "set ada ", 0, &setlist); |
14544 | ||
14545 | add_prefix_cmd ("ada", no_class, show_ada_command, | |
14546 | _("Generic command for showing Ada-specific settings."), | |
14547 | &show_ada_list, "show ada ", 0, &showlist); | |
14548 | ||
14549 | add_setshow_boolean_cmd ("trust-PAD-over-XVS", class_obscure, | |
14550 | &trust_pad_over_xvs, _("\ | |
14551 | Enable or disable an optimization trusting PAD types over XVS types"), _("\ | |
14552 | Show whether an optimization trusting PAD types over XVS types is activated"), | |
14553 | _("\ | |
14554 | This is related to the encoding used by the GNAT compiler. The debugger\n\ | |
14555 | should normally trust the contents of PAD types, but certain older versions\n\ | |
14556 | of GNAT have a bug that sometimes causes the information in the PAD type\n\ | |
14557 | to be incorrect. Turning this setting \"off\" allows the debugger to\n\ | |
14558 | work around this bug. It is always safe to turn this option \"off\", but\n\ | |
14559 | this incurs a slight performance penalty, so it is recommended to NOT change\n\ | |
14560 | this option to \"off\" unless necessary."), | |
14561 | NULL, NULL, &set_ada_list, &show_ada_list); | |
14562 | ||
d72413e6 PMR |
14563 | add_setshow_boolean_cmd ("print-signatures", class_vars, |
14564 | &print_signatures, _("\ | |
14565 | Enable or disable the output of formal and return types for functions in the \ | |
14566 | overloads selection menu"), _("\ | |
14567 | Show whether the output of formal and return types for functions in the \ | |
14568 | overloads selection menu is activated"), | |
14569 | NULL, NULL, NULL, &set_ada_list, &show_ada_list); | |
14570 | ||
9ac4176b PA |
14571 | add_catch_command ("exception", _("\ |
14572 | Catch Ada exceptions, when raised.\n\ | |
60a90376 JB |
14573 | Usage: catch exception [ ARG ]\n\ |
14574 | \n\ | |
14575 | Without any argument, stop when any Ada exception is raised.\n\ | |
14576 | If ARG is \"unhandled\" (without the quotes), only stop when the exception\n\ | |
14577 | being raised does not have a handler (and will therefore lead to the task's\n\ | |
14578 | termination).\n\ | |
14579 | Otherwise, the catchpoint only stops when the name of the exception being\n\ | |
14580 | raised is the same as ARG."), | |
9ac4176b | 14581 | catch_ada_exception_command, |
71bed2db | 14582 | catch_ada_completer, |
9ac4176b PA |
14583 | CATCH_PERMANENT, |
14584 | CATCH_TEMPORARY); | |
9f757bf7 XR |
14585 | |
14586 | add_catch_command ("handlers", _("\ | |
14587 | Catch Ada exceptions, when handled.\n\ | |
14588 | With an argument, catch only exceptions with the given name."), | |
14589 | catch_ada_handlers_command, | |
71bed2db | 14590 | catch_ada_completer, |
9f757bf7 XR |
14591 | CATCH_PERMANENT, |
14592 | CATCH_TEMPORARY); | |
9ac4176b PA |
14593 | add_catch_command ("assert", _("\ |
14594 | Catch failed Ada assertions, when raised.\n\ | |
14595 | With an argument, catch only exceptions with the given name."), | |
14596 | catch_assert_command, | |
14597 | NULL, | |
14598 | CATCH_PERMANENT, | |
14599 | CATCH_TEMPORARY); | |
14600 | ||
6c038f32 | 14601 | varsize_limit = 65536; |
3fcded8f JB |
14602 | add_setshow_uinteger_cmd ("varsize-limit", class_support, |
14603 | &varsize_limit, _("\ | |
14604 | Set the maximum number of bytes allowed in a variable-size object."), _("\ | |
14605 | Show the maximum number of bytes allowed in a variable-size object."), _("\ | |
14606 | Attempts to access an object whose size is not a compile-time constant\n\ | |
14607 | and exceeds this limit will cause an error."), | |
14608 | NULL, NULL, &setlist, &showlist); | |
6c038f32 | 14609 | |
778865d3 JB |
14610 | add_info ("exceptions", info_exceptions_command, |
14611 | _("\ | |
14612 | List all Ada exception names.\n\ | |
14613 | If a regular expression is passed as an argument, only those matching\n\ | |
14614 | the regular expression are listed.")); | |
14615 | ||
c6044dd1 JB |
14616 | add_prefix_cmd ("ada", class_maintenance, maint_set_ada_cmd, |
14617 | _("Set Ada maintenance-related variables."), | |
14618 | &maint_set_ada_cmdlist, "maintenance set ada ", | |
14619 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
14620 | ||
14621 | add_prefix_cmd ("ada", class_maintenance, maint_show_ada_cmd, | |
14622 | _("Show Ada maintenance-related variables"), | |
14623 | &maint_show_ada_cmdlist, "maintenance show ada ", | |
14624 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
14625 | ||
14626 | add_setshow_boolean_cmd | |
14627 | ("ignore-descriptive-types", class_maintenance, | |
14628 | &ada_ignore_descriptive_types_p, | |
14629 | _("Set whether descriptive types generated by GNAT should be ignored."), | |
14630 | _("Show whether descriptive types generated by GNAT should be ignored."), | |
14631 | _("\ | |
14632 | When enabled, the debugger will stop using the DW_AT_GNAT_descriptive_type\n\ | |
14633 | DWARF attribute."), | |
14634 | NULL, NULL, &maint_set_ada_cmdlist, &maint_show_ada_cmdlist); | |
14635 | ||
459a2e4c TT |
14636 | decoded_names_store = htab_create_alloc (256, htab_hash_string, streq_hash, |
14637 | NULL, xcalloc, xfree); | |
6b69afc4 | 14638 | |
3d9434b5 | 14639 | /* The ada-lang observers. */ |
76727919 TT |
14640 | gdb::observers::new_objfile.attach (ada_new_objfile_observer); |
14641 | gdb::observers::free_objfile.attach (ada_free_objfile_observer); | |
14642 | gdb::observers::inferior_exit.attach (ada_inferior_exit); | |
14f9c5c9 | 14643 | } |