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6e681866 | 1 | /* Ada language support routines for GDB, the GNU debugger. |
10a2c479 | 2 | |
e2882c85 | 3 | Copyright (C) 1992-2018 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" |
4c4b4cd2 PH |
24 | #include "gdb_regex.h" |
25 | #include "frame.h" | |
14f9c5c9 AS |
26 | #include "symtab.h" |
27 | #include "gdbtypes.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "expression.h" | |
30 | #include "parser-defs.h" | |
31 | #include "language.h" | |
a53b64ea | 32 | #include "varobj.h" |
14f9c5c9 AS |
33 | #include "c-lang.h" |
34 | #include "inferior.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "breakpoint.h" | |
38 | #include "gdbcore.h" | |
4c4b4cd2 PH |
39 | #include "hashtab.h" |
40 | #include "gdb_obstack.h" | |
14f9c5c9 | 41 | #include "ada-lang.h" |
4c4b4cd2 | 42 | #include "completer.h" |
53ce3c39 | 43 | #include <sys/stat.h> |
14f9c5c9 | 44 | #include "ui-out.h" |
fe898f56 | 45 | #include "block.h" |
04714b91 | 46 | #include "infcall.h" |
de4f826b | 47 | #include "dictionary.h" |
f7f9143b JB |
48 | #include "annotate.h" |
49 | #include "valprint.h" | |
9bbc9174 | 50 | #include "source.h" |
0259addd | 51 | #include "observer.h" |
2ba95b9b | 52 | #include "vec.h" |
692465f1 | 53 | #include "stack.h" |
fa864999 | 54 | #include "gdb_vecs.h" |
79d43c61 | 55 | #include "typeprint.h" |
22cee43f | 56 | #include "namespace.h" |
14f9c5c9 | 57 | |
ccefe4c4 | 58 | #include "psymtab.h" |
40bc484c | 59 | #include "value.h" |
956a9fb9 | 60 | #include "mi/mi-common.h" |
9ac4176b | 61 | #include "arch-utils.h" |
0fcd72ba | 62 | #include "cli/cli-utils.h" |
14bc53a8 | 63 | #include "common/function-view.h" |
d5722aa2 | 64 | #include "common/byte-vector.h" |
ab816a27 | 65 | #include <algorithm> |
ccefe4c4 | 66 | |
4c4b4cd2 | 67 | /* Define whether or not the C operator '/' truncates towards zero for |
0963b4bd | 68 | differently signed operands (truncation direction is undefined in C). |
4c4b4cd2 PH |
69 | Copied from valarith.c. */ |
70 | ||
71 | #ifndef TRUNCATION_TOWARDS_ZERO | |
72 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
73 | #endif | |
74 | ||
d2e4a39e | 75 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 76 | |
d2e4a39e | 77 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 78 | |
d2e4a39e | 79 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 80 | |
d2e4a39e | 81 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 82 | |
d2e4a39e | 83 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 84 | |
556bdfd4 | 85 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 86 | |
d2e4a39e | 87 | static struct value *desc_data (struct value *); |
14f9c5c9 | 88 | |
d2e4a39e | 89 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 90 | |
d2e4a39e | 91 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 92 | |
d2e4a39e | 93 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 94 | |
d2e4a39e | 95 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 96 | |
d2e4a39e | 97 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 98 | |
d2e4a39e | 99 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 100 | |
d2e4a39e | 101 | static int desc_arity (struct type *); |
14f9c5c9 | 102 | |
d2e4a39e | 103 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 104 | |
d2e4a39e | 105 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 106 | |
40bc484c | 107 | static struct value *make_array_descriptor (struct type *, struct value *); |
14f9c5c9 | 108 | |
4c4b4cd2 | 109 | static void ada_add_block_symbols (struct obstack *, |
b5ec771e PA |
110 | const struct block *, |
111 | const lookup_name_info &lookup_name, | |
112 | domain_enum, struct objfile *); | |
14f9c5c9 | 113 | |
22cee43f | 114 | static void ada_add_all_symbols (struct obstack *, const struct block *, |
b5ec771e PA |
115 | const lookup_name_info &lookup_name, |
116 | domain_enum, int, int *); | |
22cee43f | 117 | |
d12307c1 | 118 | static int is_nonfunction (struct block_symbol *, int); |
14f9c5c9 | 119 | |
76a01679 | 120 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
f0c5f9b2 | 121 | const struct block *); |
14f9c5c9 | 122 | |
4c4b4cd2 PH |
123 | static int num_defns_collected (struct obstack *); |
124 | ||
d12307c1 | 125 | static struct block_symbol *defns_collected (struct obstack *, int); |
14f9c5c9 | 126 | |
e9d9f57e | 127 | static struct value *resolve_subexp (expression_up *, int *, int, |
76a01679 | 128 | struct type *); |
14f9c5c9 | 129 | |
e9d9f57e | 130 | static void replace_operator_with_call (expression_up *, int, int, int, |
270140bd | 131 | struct symbol *, const struct block *); |
14f9c5c9 | 132 | |
d2e4a39e | 133 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 134 | |
a121b7c1 | 135 | static const char *ada_op_name (enum exp_opcode); |
4c4b4cd2 PH |
136 | |
137 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 138 | |
d2e4a39e | 139 | static int numeric_type_p (struct type *); |
14f9c5c9 | 140 | |
d2e4a39e | 141 | static int integer_type_p (struct type *); |
14f9c5c9 | 142 | |
d2e4a39e | 143 | static int scalar_type_p (struct type *); |
14f9c5c9 | 144 | |
d2e4a39e | 145 | static int discrete_type_p (struct type *); |
14f9c5c9 | 146 | |
aeb5907d JB |
147 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
148 | const char **, | |
149 | int *, | |
150 | const char **); | |
151 | ||
152 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
270140bd | 153 | const struct block *); |
aeb5907d | 154 | |
a121b7c1 | 155 | static struct type *ada_lookup_struct_elt_type (struct type *, const char *, |
988f6b3d | 156 | int, int); |
4c4b4cd2 | 157 | |
d2e4a39e | 158 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 159 | |
b4ba55a1 JB |
160 | static struct type *ada_find_parallel_type_with_name (struct type *, |
161 | const char *); | |
162 | ||
d2e4a39e | 163 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 164 | |
10a2c479 | 165 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 166 | const gdb_byte *, |
4c4b4cd2 PH |
167 | CORE_ADDR, struct value *); |
168 | ||
169 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 170 | |
28c85d6c | 171 | static struct type *to_fixed_range_type (struct type *, struct value *); |
14f9c5c9 | 172 | |
d2e4a39e | 173 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 174 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 175 | |
d2e4a39e | 176 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 177 | |
ad82864c | 178 | static struct type *constrained_packed_array_type (struct type *, long *); |
14f9c5c9 | 179 | |
ad82864c | 180 | static struct type *decode_constrained_packed_array_type (struct type *); |
14f9c5c9 | 181 | |
ad82864c JB |
182 | static long decode_packed_array_bitsize (struct type *); |
183 | ||
184 | static struct value *decode_constrained_packed_array (struct value *); | |
185 | ||
186 | static int ada_is_packed_array_type (struct type *); | |
187 | ||
188 | static int ada_is_unconstrained_packed_array_type (struct type *); | |
14f9c5c9 | 189 | |
d2e4a39e | 190 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 191 | struct value **); |
14f9c5c9 | 192 | |
50810684 | 193 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int, int); |
52ce6436 | 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 PH |
227 | |
228 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
229 | struct value *); | |
230 | ||
d12307c1 | 231 | static int ada_resolve_function (struct block_symbol *, int, |
4c4b4cd2 PH |
232 | struct value **, int, const char *, |
233 | struct type *); | |
234 | ||
4c4b4cd2 PH |
235 | static int ada_is_direct_array_type (struct type *); |
236 | ||
72d5681a PH |
237 | static void ada_language_arch_info (struct gdbarch *, |
238 | struct language_arch_info *); | |
714e53ab | 239 | |
52ce6436 PH |
240 | static struct value *ada_index_struct_field (int, struct value *, int, |
241 | struct type *); | |
242 | ||
243 | static struct value *assign_aggregate (struct value *, struct value *, | |
0963b4bd MS |
244 | struct expression *, |
245 | int *, enum noside); | |
52ce6436 PH |
246 | |
247 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
248 | struct expression *, | |
249 | int *, LONGEST *, int *, | |
250 | int, LONGEST, LONGEST); | |
251 | ||
252 | static void aggregate_assign_positional (struct value *, struct value *, | |
253 | struct expression *, | |
254 | int *, LONGEST *, int *, int, | |
255 | LONGEST, LONGEST); | |
256 | ||
257 | ||
258 | static void aggregate_assign_others (struct value *, struct value *, | |
259 | struct expression *, | |
260 | int *, LONGEST *, int, LONGEST, LONGEST); | |
261 | ||
262 | ||
263 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
264 | ||
265 | ||
266 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
267 | int *, enum noside); | |
268 | ||
269 | static void ada_forward_operator_length (struct expression *, int, int *, | |
270 | int *); | |
852dff6c JB |
271 | |
272 | static struct type *ada_find_any_type (const char *name); | |
b5ec771e PA |
273 | |
274 | static symbol_name_matcher_ftype *ada_get_symbol_name_matcher | |
275 | (const lookup_name_info &lookup_name); | |
276 | ||
4c4b4cd2 PH |
277 | \f |
278 | ||
ee01b665 JB |
279 | /* The result of a symbol lookup to be stored in our symbol cache. */ |
280 | ||
281 | struct cache_entry | |
282 | { | |
283 | /* The name used to perform the lookup. */ | |
284 | const char *name; | |
285 | /* The namespace used during the lookup. */ | |
fe978cb0 | 286 | domain_enum domain; |
ee01b665 JB |
287 | /* The symbol returned by the lookup, or NULL if no matching symbol |
288 | was found. */ | |
289 | struct symbol *sym; | |
290 | /* The block where the symbol was found, or NULL if no matching | |
291 | symbol was found. */ | |
292 | const struct block *block; | |
293 | /* A pointer to the next entry with the same hash. */ | |
294 | struct cache_entry *next; | |
295 | }; | |
296 | ||
297 | /* The Ada symbol cache, used to store the result of Ada-mode symbol | |
298 | lookups in the course of executing the user's commands. | |
299 | ||
300 | The cache is implemented using a simple, fixed-sized hash. | |
301 | The size is fixed on the grounds that there are not likely to be | |
302 | all that many symbols looked up during any given session, regardless | |
303 | of the size of the symbol table. If we decide to go to a resizable | |
304 | table, let's just use the stuff from libiberty instead. */ | |
305 | ||
306 | #define HASH_SIZE 1009 | |
307 | ||
308 | struct ada_symbol_cache | |
309 | { | |
310 | /* An obstack used to store the entries in our cache. */ | |
311 | struct obstack cache_space; | |
312 | ||
313 | /* The root of the hash table used to implement our symbol cache. */ | |
314 | struct cache_entry *root[HASH_SIZE]; | |
315 | }; | |
316 | ||
317 | static void ada_free_symbol_cache (struct ada_symbol_cache *sym_cache); | |
76a01679 | 318 | |
4c4b4cd2 | 319 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
320 | static unsigned int varsize_limit; |
321 | ||
67cb5b2d | 322 | static const char ada_completer_word_break_characters[] = |
4c4b4cd2 PH |
323 | #ifdef VMS |
324 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
325 | #else | |
14f9c5c9 | 326 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 327 | #endif |
14f9c5c9 | 328 | |
4c4b4cd2 | 329 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 330 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 331 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 332 | |
4c4b4cd2 PH |
333 | /* Limit on the number of warnings to raise per expression evaluation. */ |
334 | static int warning_limit = 2; | |
335 | ||
336 | /* Number of warning messages issued; reset to 0 by cleanups after | |
337 | expression evaluation. */ | |
338 | static int warnings_issued = 0; | |
339 | ||
340 | static const char *known_runtime_file_name_patterns[] = { | |
341 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
342 | }; | |
343 | ||
344 | static const char *known_auxiliary_function_name_patterns[] = { | |
345 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
346 | }; | |
347 | ||
c6044dd1 JB |
348 | /* Maintenance-related settings for this module. */ |
349 | ||
350 | static struct cmd_list_element *maint_set_ada_cmdlist; | |
351 | static struct cmd_list_element *maint_show_ada_cmdlist; | |
352 | ||
353 | /* Implement the "maintenance set ada" (prefix) command. */ | |
354 | ||
355 | static void | |
981a3fb3 | 356 | maint_set_ada_cmd (const char *args, int from_tty) |
c6044dd1 | 357 | { |
635c7e8a TT |
358 | help_list (maint_set_ada_cmdlist, "maintenance set ada ", all_commands, |
359 | gdb_stdout); | |
c6044dd1 JB |
360 | } |
361 | ||
362 | /* Implement the "maintenance show ada" (prefix) command. */ | |
363 | ||
364 | static void | |
981a3fb3 | 365 | maint_show_ada_cmd (const char *args, int from_tty) |
c6044dd1 JB |
366 | { |
367 | cmd_show_list (maint_show_ada_cmdlist, from_tty, ""); | |
368 | } | |
369 | ||
370 | /* The "maintenance ada set/show ignore-descriptive-type" value. */ | |
371 | ||
372 | static int ada_ignore_descriptive_types_p = 0; | |
373 | ||
e802dbe0 JB |
374 | /* Inferior-specific data. */ |
375 | ||
376 | /* Per-inferior data for this module. */ | |
377 | ||
378 | struct ada_inferior_data | |
379 | { | |
380 | /* The ada__tags__type_specific_data type, which is used when decoding | |
381 | tagged types. With older versions of GNAT, this type was directly | |
382 | accessible through a component ("tsd") in the object tag. But this | |
383 | is no longer the case, so we cache it for each inferior. */ | |
384 | struct type *tsd_type; | |
3eecfa55 JB |
385 | |
386 | /* The exception_support_info data. This data is used to determine | |
387 | how to implement support for Ada exception catchpoints in a given | |
388 | inferior. */ | |
389 | const struct exception_support_info *exception_info; | |
e802dbe0 JB |
390 | }; |
391 | ||
392 | /* Our key to this module's inferior data. */ | |
393 | static const struct inferior_data *ada_inferior_data; | |
394 | ||
395 | /* A cleanup routine for our inferior data. */ | |
396 | static void | |
397 | ada_inferior_data_cleanup (struct inferior *inf, void *arg) | |
398 | { | |
399 | struct ada_inferior_data *data; | |
400 | ||
9a3c8263 | 401 | data = (struct ada_inferior_data *) inferior_data (inf, ada_inferior_data); |
e802dbe0 JB |
402 | if (data != NULL) |
403 | xfree (data); | |
404 | } | |
405 | ||
406 | /* Return our inferior data for the given inferior (INF). | |
407 | ||
408 | This function always returns a valid pointer to an allocated | |
409 | ada_inferior_data structure. If INF's inferior data has not | |
410 | been previously set, this functions creates a new one with all | |
411 | fields set to zero, sets INF's inferior to it, and then returns | |
412 | a pointer to that newly allocated ada_inferior_data. */ | |
413 | ||
414 | static struct ada_inferior_data * | |
415 | get_ada_inferior_data (struct inferior *inf) | |
416 | { | |
417 | struct ada_inferior_data *data; | |
418 | ||
9a3c8263 | 419 | data = (struct ada_inferior_data *) inferior_data (inf, ada_inferior_data); |
e802dbe0 JB |
420 | if (data == NULL) |
421 | { | |
41bf6aca | 422 | data = XCNEW (struct ada_inferior_data); |
e802dbe0 JB |
423 | set_inferior_data (inf, ada_inferior_data, data); |
424 | } | |
425 | ||
426 | return data; | |
427 | } | |
428 | ||
429 | /* Perform all necessary cleanups regarding our module's inferior data | |
430 | that is required after the inferior INF just exited. */ | |
431 | ||
432 | static void | |
433 | ada_inferior_exit (struct inferior *inf) | |
434 | { | |
435 | ada_inferior_data_cleanup (inf, NULL); | |
436 | set_inferior_data (inf, ada_inferior_data, NULL); | |
437 | } | |
438 | ||
ee01b665 JB |
439 | |
440 | /* program-space-specific data. */ | |
441 | ||
442 | /* This module's per-program-space data. */ | |
443 | struct ada_pspace_data | |
444 | { | |
445 | /* The Ada symbol cache. */ | |
446 | struct ada_symbol_cache *sym_cache; | |
447 | }; | |
448 | ||
449 | /* Key to our per-program-space data. */ | |
450 | static const struct program_space_data *ada_pspace_data_handle; | |
451 | ||
452 | /* Return this module's data for the given program space (PSPACE). | |
453 | If not is found, add a zero'ed one now. | |
454 | ||
455 | This function always returns a valid object. */ | |
456 | ||
457 | static struct ada_pspace_data * | |
458 | get_ada_pspace_data (struct program_space *pspace) | |
459 | { | |
460 | struct ada_pspace_data *data; | |
461 | ||
9a3c8263 SM |
462 | data = ((struct ada_pspace_data *) |
463 | program_space_data (pspace, ada_pspace_data_handle)); | |
ee01b665 JB |
464 | if (data == NULL) |
465 | { | |
466 | data = XCNEW (struct ada_pspace_data); | |
467 | set_program_space_data (pspace, ada_pspace_data_handle, data); | |
468 | } | |
469 | ||
470 | return data; | |
471 | } | |
472 | ||
473 | /* The cleanup callback for this module's per-program-space data. */ | |
474 | ||
475 | static void | |
476 | ada_pspace_data_cleanup (struct program_space *pspace, void *data) | |
477 | { | |
9a3c8263 | 478 | struct ada_pspace_data *pspace_data = (struct ada_pspace_data *) data; |
ee01b665 JB |
479 | |
480 | if (pspace_data->sym_cache != NULL) | |
481 | ada_free_symbol_cache (pspace_data->sym_cache); | |
482 | xfree (pspace_data); | |
483 | } | |
484 | ||
4c4b4cd2 PH |
485 | /* Utilities */ |
486 | ||
720d1a40 | 487 | /* If TYPE is a TYPE_CODE_TYPEDEF type, return the target type after |
eed9788b | 488 | all typedef layers have been peeled. Otherwise, return TYPE. |
720d1a40 JB |
489 | |
490 | Normally, we really expect a typedef type to only have 1 typedef layer. | |
491 | In other words, we really expect the target type of a typedef type to be | |
492 | a non-typedef type. This is particularly true for Ada units, because | |
493 | the language does not have a typedef vs not-typedef distinction. | |
494 | In that respect, the Ada compiler has been trying to eliminate as many | |
495 | typedef definitions in the debugging information, since they generally | |
496 | do not bring any extra information (we still use typedef under certain | |
497 | circumstances related mostly to the GNAT encoding). | |
498 | ||
499 | Unfortunately, we have seen situations where the debugging information | |
500 | generated by the compiler leads to such multiple typedef layers. For | |
501 | instance, consider the following example with stabs: | |
502 | ||
503 | .stabs "pck__float_array___XUP:Tt(0,46)=s16P_ARRAY:(0,47)=[...]"[...] | |
504 | .stabs "pck__float_array___XUP:t(0,36)=(0,46)",128,0,6,0 | |
505 | ||
506 | This is an error in the debugging information which causes type | |
507 | pck__float_array___XUP to be defined twice, and the second time, | |
508 | it is defined as a typedef of a typedef. | |
509 | ||
510 | This is on the fringe of legality as far as debugging information is | |
511 | concerned, and certainly unexpected. But it is easy to handle these | |
512 | situations correctly, so we can afford to be lenient in this case. */ | |
513 | ||
514 | static struct type * | |
515 | ada_typedef_target_type (struct type *type) | |
516 | { | |
517 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
518 | type = TYPE_TARGET_TYPE (type); | |
519 | return type; | |
520 | } | |
521 | ||
41d27058 JB |
522 | /* Given DECODED_NAME a string holding a symbol name in its |
523 | decoded form (ie using the Ada dotted notation), returns | |
524 | its unqualified name. */ | |
525 | ||
526 | static const char * | |
527 | ada_unqualified_name (const char *decoded_name) | |
528 | { | |
2b0f535a JB |
529 | const char *result; |
530 | ||
531 | /* If the decoded name starts with '<', it means that the encoded | |
532 | name does not follow standard naming conventions, and thus that | |
533 | it is not your typical Ada symbol name. Trying to unqualify it | |
534 | is therefore pointless and possibly erroneous. */ | |
535 | if (decoded_name[0] == '<') | |
536 | return decoded_name; | |
537 | ||
538 | result = strrchr (decoded_name, '.'); | |
41d27058 JB |
539 | if (result != NULL) |
540 | result++; /* Skip the dot... */ | |
541 | else | |
542 | result = decoded_name; | |
543 | ||
544 | return result; | |
545 | } | |
546 | ||
547 | /* Return a string starting with '<', followed by STR, and '>'. | |
548 | The result is good until the next call. */ | |
549 | ||
550 | static char * | |
551 | add_angle_brackets (const char *str) | |
552 | { | |
553 | static char *result = NULL; | |
554 | ||
555 | xfree (result); | |
88c15c34 | 556 | result = xstrprintf ("<%s>", str); |
41d27058 JB |
557 | return result; |
558 | } | |
96d887e8 | 559 | |
67cb5b2d | 560 | static const char * |
4c4b4cd2 PH |
561 | ada_get_gdb_completer_word_break_characters (void) |
562 | { | |
563 | return ada_completer_word_break_characters; | |
564 | } | |
565 | ||
e79af960 JB |
566 | /* Print an array element index using the Ada syntax. */ |
567 | ||
568 | static void | |
569 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
79a45b7d | 570 | const struct value_print_options *options) |
e79af960 | 571 | { |
79a45b7d | 572 | LA_VALUE_PRINT (index_value, stream, options); |
e79af960 JB |
573 | fprintf_filtered (stream, " => "); |
574 | } | |
575 | ||
f27cf670 | 576 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 577 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 578 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 579 | |
f27cf670 AS |
580 | void * |
581 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 582 | { |
d2e4a39e AS |
583 | if (*size < min_size) |
584 | { | |
585 | *size *= 2; | |
586 | if (*size < min_size) | |
4c4b4cd2 | 587 | *size = min_size; |
f27cf670 | 588 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 589 | } |
f27cf670 | 590 | return vect; |
14f9c5c9 AS |
591 | } |
592 | ||
593 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 594 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
595 | |
596 | static int | |
ebf56fd3 | 597 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
598 | { |
599 | int len = strlen (target); | |
5b4ee69b | 600 | |
d2e4a39e | 601 | return |
4c4b4cd2 PH |
602 | (strncmp (field_name, target, len) == 0 |
603 | && (field_name[len] == '\0' | |
61012eef | 604 | || (startswith (field_name + len, "___") |
76a01679 JB |
605 | && strcmp (field_name + strlen (field_name) - 6, |
606 | "___XVN") != 0))); | |
14f9c5c9 AS |
607 | } |
608 | ||
609 | ||
872c8b51 JB |
610 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
611 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
612 | and return its index. This function also handles fields whose name | |
613 | have ___ suffixes because the compiler sometimes alters their name | |
614 | by adding such a suffix to represent fields with certain constraints. | |
615 | If the field could not be found, return a negative number if | |
616 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
617 | |
618 | int | |
619 | ada_get_field_index (const struct type *type, const char *field_name, | |
620 | int maybe_missing) | |
621 | { | |
622 | int fieldno; | |
872c8b51 JB |
623 | struct type *struct_type = check_typedef ((struct type *) type); |
624 | ||
625 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); fieldno++) | |
626 | if (field_name_match (TYPE_FIELD_NAME (struct_type, fieldno), field_name)) | |
4c4b4cd2 PH |
627 | return fieldno; |
628 | ||
629 | if (!maybe_missing) | |
323e0a4a | 630 | error (_("Unable to find field %s in struct %s. Aborting"), |
872c8b51 | 631 | field_name, TYPE_NAME (struct_type)); |
4c4b4cd2 PH |
632 | |
633 | return -1; | |
634 | } | |
635 | ||
636 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
637 | |
638 | int | |
d2e4a39e | 639 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
640 | { |
641 | if (name == NULL) | |
642 | return 0; | |
d2e4a39e | 643 | else |
14f9c5c9 | 644 | { |
d2e4a39e | 645 | const char *p = strstr (name, "___"); |
5b4ee69b | 646 | |
14f9c5c9 | 647 | if (p == NULL) |
4c4b4cd2 | 648 | return strlen (name); |
14f9c5c9 | 649 | else |
4c4b4cd2 | 650 | return p - name; |
14f9c5c9 AS |
651 | } |
652 | } | |
653 | ||
4c4b4cd2 PH |
654 | /* Return non-zero if SUFFIX is a suffix of STR. |
655 | Return zero if STR is null. */ | |
656 | ||
14f9c5c9 | 657 | static int |
d2e4a39e | 658 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
659 | { |
660 | int len1, len2; | |
5b4ee69b | 661 | |
14f9c5c9 AS |
662 | if (str == NULL) |
663 | return 0; | |
664 | len1 = strlen (str); | |
665 | len2 = strlen (suffix); | |
4c4b4cd2 | 666 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
667 | } |
668 | ||
4c4b4cd2 PH |
669 | /* The contents of value VAL, treated as a value of type TYPE. The |
670 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 671 | |
d2e4a39e | 672 | static struct value * |
4c4b4cd2 | 673 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 674 | { |
61ee279c | 675 | type = ada_check_typedef (type); |
df407dfe | 676 | if (value_type (val) == type) |
4c4b4cd2 | 677 | return val; |
d2e4a39e | 678 | else |
14f9c5c9 | 679 | { |
4c4b4cd2 PH |
680 | struct value *result; |
681 | ||
682 | /* Make sure that the object size is not unreasonable before | |
683 | trying to allocate some memory for it. */ | |
c1b5a1a6 | 684 | ada_ensure_varsize_limit (type); |
4c4b4cd2 | 685 | |
41e8491f JK |
686 | if (value_lazy (val) |
687 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) | |
688 | result = allocate_value_lazy (type); | |
689 | else | |
690 | { | |
691 | result = allocate_value (type); | |
9a0dc9e3 | 692 | value_contents_copy_raw (result, 0, val, 0, TYPE_LENGTH (type)); |
41e8491f | 693 | } |
74bcbdf3 | 694 | set_value_component_location (result, val); |
9bbda503 AC |
695 | set_value_bitsize (result, value_bitsize (val)); |
696 | set_value_bitpos (result, value_bitpos (val)); | |
42ae5230 | 697 | set_value_address (result, value_address (val)); |
14f9c5c9 AS |
698 | return result; |
699 | } | |
700 | } | |
701 | ||
fc1a4b47 AC |
702 | static const gdb_byte * |
703 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
704 | { |
705 | if (valaddr == NULL) | |
706 | return NULL; | |
707 | else | |
708 | return valaddr + offset; | |
709 | } | |
710 | ||
711 | static CORE_ADDR | |
ebf56fd3 | 712 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
713 | { |
714 | if (address == 0) | |
715 | return 0; | |
d2e4a39e | 716 | else |
14f9c5c9 AS |
717 | return address + offset; |
718 | } | |
719 | ||
4c4b4cd2 PH |
720 | /* Issue a warning (as for the definition of warning in utils.c, but |
721 | with exactly one argument rather than ...), unless the limit on the | |
722 | number of warnings has passed during the evaluation of the current | |
723 | expression. */ | |
a2249542 | 724 | |
77109804 AC |
725 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
726 | provided by "complaint". */ | |
a0b31db1 | 727 | static void lim_warning (const char *format, ...) ATTRIBUTE_PRINTF (1, 2); |
77109804 | 728 | |
14f9c5c9 | 729 | static void |
a2249542 | 730 | lim_warning (const char *format, ...) |
14f9c5c9 | 731 | { |
a2249542 | 732 | va_list args; |
a2249542 | 733 | |
5b4ee69b | 734 | va_start (args, format); |
4c4b4cd2 PH |
735 | warnings_issued += 1; |
736 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
737 | vwarning (format, args); |
738 | ||
739 | va_end (args); | |
4c4b4cd2 PH |
740 | } |
741 | ||
714e53ab PH |
742 | /* Issue an error if the size of an object of type T is unreasonable, |
743 | i.e. if it would be a bad idea to allocate a value of this type in | |
744 | GDB. */ | |
745 | ||
c1b5a1a6 JB |
746 | void |
747 | ada_ensure_varsize_limit (const struct type *type) | |
714e53ab PH |
748 | { |
749 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 750 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
751 | } |
752 | ||
0963b4bd | 753 | /* Maximum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 754 | static LONGEST |
c3e5cd34 | 755 | max_of_size (int size) |
4c4b4cd2 | 756 | { |
76a01679 | 757 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
5b4ee69b | 758 | |
76a01679 | 759 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
760 | } |
761 | ||
0963b4bd | 762 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 763 | static LONGEST |
c3e5cd34 | 764 | min_of_size (int size) |
4c4b4cd2 | 765 | { |
c3e5cd34 | 766 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
767 | } |
768 | ||
0963b4bd | 769 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 770 | static ULONGEST |
c3e5cd34 | 771 | umax_of_size (int size) |
4c4b4cd2 | 772 | { |
76a01679 | 773 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
5b4ee69b | 774 | |
76a01679 | 775 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
776 | } |
777 | ||
0963b4bd | 778 | /* Maximum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
779 | static LONGEST |
780 | max_of_type (struct type *t) | |
4c4b4cd2 | 781 | { |
c3e5cd34 PH |
782 | if (TYPE_UNSIGNED (t)) |
783 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
784 | else | |
785 | return max_of_size (TYPE_LENGTH (t)); | |
786 | } | |
787 | ||
0963b4bd | 788 | /* Minimum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
789 | static LONGEST |
790 | min_of_type (struct type *t) | |
791 | { | |
792 | if (TYPE_UNSIGNED (t)) | |
793 | return 0; | |
794 | else | |
795 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
796 | } |
797 | ||
798 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
43bbcdc2 PH |
799 | LONGEST |
800 | ada_discrete_type_high_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_HIGH_BOUND (type); |
4c4b4cd2 | 807 | case TYPE_CODE_ENUM: |
14e75d8e | 808 | return TYPE_FIELD_ENUMVAL (type, TYPE_NFIELDS (type) - 1); |
690cc4eb PH |
809 | case TYPE_CODE_BOOL: |
810 | return 1; | |
811 | case TYPE_CODE_CHAR: | |
76a01679 | 812 | case TYPE_CODE_INT: |
690cc4eb | 813 | return max_of_type (type); |
4c4b4cd2 | 814 | default: |
43bbcdc2 | 815 | error (_("Unexpected type in ada_discrete_type_high_bound.")); |
4c4b4cd2 PH |
816 | } |
817 | } | |
818 | ||
14e75d8e | 819 | /* The smallest value in the domain of TYPE, a discrete type, as an integer. */ |
43bbcdc2 PH |
820 | LONGEST |
821 | ada_discrete_type_low_bound (struct type *type) | |
4c4b4cd2 | 822 | { |
c3345124 | 823 | type = resolve_dynamic_type (type, NULL, 0); |
76a01679 | 824 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
825 | { |
826 | case TYPE_CODE_RANGE: | |
690cc4eb | 827 | return TYPE_LOW_BOUND (type); |
4c4b4cd2 | 828 | case TYPE_CODE_ENUM: |
14e75d8e | 829 | return TYPE_FIELD_ENUMVAL (type, 0); |
690cc4eb PH |
830 | case TYPE_CODE_BOOL: |
831 | return 0; | |
832 | case TYPE_CODE_CHAR: | |
76a01679 | 833 | case TYPE_CODE_INT: |
690cc4eb | 834 | return min_of_type (type); |
4c4b4cd2 | 835 | default: |
43bbcdc2 | 836 | error (_("Unexpected type in ada_discrete_type_low_bound.")); |
4c4b4cd2 PH |
837 | } |
838 | } | |
839 | ||
840 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 841 | non-range scalar type. */ |
4c4b4cd2 PH |
842 | |
843 | static struct type * | |
18af8284 | 844 | get_base_type (struct type *type) |
4c4b4cd2 PH |
845 | { |
846 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
847 | { | |
76a01679 JB |
848 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
849 | return type; | |
4c4b4cd2 PH |
850 | type = TYPE_TARGET_TYPE (type); |
851 | } | |
852 | return type; | |
14f9c5c9 | 853 | } |
41246937 JB |
854 | |
855 | /* Return a decoded version of the given VALUE. This means returning | |
856 | a value whose type is obtained by applying all the GNAT-specific | |
857 | encondings, making the resulting type a static but standard description | |
858 | of the initial type. */ | |
859 | ||
860 | struct value * | |
861 | ada_get_decoded_value (struct value *value) | |
862 | { | |
863 | struct type *type = ada_check_typedef (value_type (value)); | |
864 | ||
865 | if (ada_is_array_descriptor_type (type) | |
866 | || (ada_is_constrained_packed_array_type (type) | |
867 | && TYPE_CODE (type) != TYPE_CODE_PTR)) | |
868 | { | |
869 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */ | |
870 | value = ada_coerce_to_simple_array_ptr (value); | |
871 | else | |
872 | value = ada_coerce_to_simple_array (value); | |
873 | } | |
874 | else | |
875 | value = ada_to_fixed_value (value); | |
876 | ||
877 | return value; | |
878 | } | |
879 | ||
880 | /* Same as ada_get_decoded_value, but with the given TYPE. | |
881 | Because there is no associated actual value for this type, | |
882 | the resulting type might be a best-effort approximation in | |
883 | the case of dynamic types. */ | |
884 | ||
885 | struct type * | |
886 | ada_get_decoded_type (struct type *type) | |
887 | { | |
888 | type = to_static_fixed_type (type); | |
889 | if (ada_is_constrained_packed_array_type (type)) | |
890 | type = ada_coerce_to_simple_array_type (type); | |
891 | return type; | |
892 | } | |
893 | ||
4c4b4cd2 | 894 | \f |
76a01679 | 895 | |
4c4b4cd2 | 896 | /* Language Selection */ |
14f9c5c9 AS |
897 | |
898 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
ccefe4c4 | 899 | (the main program is in Ada iif the adainit symbol is found). */ |
d2e4a39e | 900 | |
14f9c5c9 | 901 | enum language |
ccefe4c4 | 902 | ada_update_initial_language (enum language lang) |
14f9c5c9 | 903 | { |
d2e4a39e | 904 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
3b7344d5 | 905 | (struct objfile *) NULL).minsym != NULL) |
4c4b4cd2 | 906 | return language_ada; |
14f9c5c9 AS |
907 | |
908 | return lang; | |
909 | } | |
96d887e8 PH |
910 | |
911 | /* If the main procedure is written in Ada, then return its name. | |
912 | The result is good until the next call. Return NULL if the main | |
913 | procedure doesn't appear to be in Ada. */ | |
914 | ||
915 | char * | |
916 | ada_main_name (void) | |
917 | { | |
3b7344d5 | 918 | struct bound_minimal_symbol msym; |
f9bc20b9 | 919 | static char *main_program_name = NULL; |
6c038f32 | 920 | |
96d887e8 PH |
921 | /* For Ada, the name of the main procedure is stored in a specific |
922 | string constant, generated by the binder. Look for that symbol, | |
923 | extract its address, and then read that string. If we didn't find | |
924 | that string, then most probably the main procedure is not written | |
925 | in Ada. */ | |
926 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
927 | ||
3b7344d5 | 928 | if (msym.minsym != NULL) |
96d887e8 | 929 | { |
f9bc20b9 JB |
930 | CORE_ADDR main_program_name_addr; |
931 | int err_code; | |
932 | ||
77e371c0 | 933 | main_program_name_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
96d887e8 | 934 | if (main_program_name_addr == 0) |
323e0a4a | 935 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 936 | |
f9bc20b9 JB |
937 | xfree (main_program_name); |
938 | target_read_string (main_program_name_addr, &main_program_name, | |
939 | 1024, &err_code); | |
940 | ||
941 | if (err_code != 0) | |
942 | return NULL; | |
96d887e8 PH |
943 | return main_program_name; |
944 | } | |
945 | ||
946 | /* The main procedure doesn't seem to be in Ada. */ | |
947 | return NULL; | |
948 | } | |
14f9c5c9 | 949 | \f |
4c4b4cd2 | 950 | /* Symbols */ |
d2e4a39e | 951 | |
4c4b4cd2 PH |
952 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
953 | of NULLs. */ | |
14f9c5c9 | 954 | |
d2e4a39e AS |
955 | const struct ada_opname_map ada_opname_table[] = { |
956 | {"Oadd", "\"+\"", BINOP_ADD}, | |
957 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
958 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
959 | {"Odivide", "\"/\"", BINOP_DIV}, | |
960 | {"Omod", "\"mod\"", BINOP_MOD}, | |
961 | {"Orem", "\"rem\"", BINOP_REM}, | |
962 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
963 | {"Olt", "\"<\"", BINOP_LESS}, | |
964 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
965 | {"Ogt", "\">\"", BINOP_GTR}, | |
966 | {"Oge", "\">=\"", BINOP_GEQ}, | |
967 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
968 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
969 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
970 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
971 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
972 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
973 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
974 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
975 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
976 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
977 | {NULL, NULL} | |
14f9c5c9 AS |
978 | }; |
979 | ||
b5ec771e PA |
980 | /* The "encoded" form of DECODED, according to GNAT conventions. The |
981 | result is valid until the next call to ada_encode. If | |
982 | THROW_ERRORS, throw an error if invalid operator name is found. | |
983 | Otherwise, return NULL in that case. */ | |
4c4b4cd2 | 984 | |
b5ec771e PA |
985 | static char * |
986 | ada_encode_1 (const char *decoded, bool throw_errors) | |
14f9c5c9 | 987 | { |
4c4b4cd2 PH |
988 | static char *encoding_buffer = NULL; |
989 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 990 | const char *p; |
14f9c5c9 | 991 | int k; |
d2e4a39e | 992 | |
4c4b4cd2 | 993 | if (decoded == NULL) |
14f9c5c9 AS |
994 | return NULL; |
995 | ||
4c4b4cd2 PH |
996 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
997 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
998 | |
999 | k = 0; | |
4c4b4cd2 | 1000 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 1001 | { |
cdc7bb92 | 1002 | if (*p == '.') |
4c4b4cd2 PH |
1003 | { |
1004 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
1005 | k += 2; | |
1006 | } | |
14f9c5c9 | 1007 | else if (*p == '"') |
4c4b4cd2 PH |
1008 | { |
1009 | const struct ada_opname_map *mapping; | |
1010 | ||
1011 | for (mapping = ada_opname_table; | |
1265e4aa | 1012 | mapping->encoded != NULL |
61012eef | 1013 | && !startswith (p, mapping->decoded); mapping += 1) |
4c4b4cd2 PH |
1014 | ; |
1015 | if (mapping->encoded == NULL) | |
b5ec771e PA |
1016 | { |
1017 | if (throw_errors) | |
1018 | error (_("invalid Ada operator name: %s"), p); | |
1019 | else | |
1020 | return NULL; | |
1021 | } | |
4c4b4cd2 PH |
1022 | strcpy (encoding_buffer + k, mapping->encoded); |
1023 | k += strlen (mapping->encoded); | |
1024 | break; | |
1025 | } | |
d2e4a39e | 1026 | else |
4c4b4cd2 PH |
1027 | { |
1028 | encoding_buffer[k] = *p; | |
1029 | k += 1; | |
1030 | } | |
14f9c5c9 AS |
1031 | } |
1032 | ||
4c4b4cd2 PH |
1033 | encoding_buffer[k] = '\0'; |
1034 | return encoding_buffer; | |
14f9c5c9 AS |
1035 | } |
1036 | ||
b5ec771e PA |
1037 | /* The "encoded" form of DECODED, according to GNAT conventions. |
1038 | The result is valid until the next call to ada_encode. */ | |
1039 | ||
1040 | char * | |
1041 | ada_encode (const char *decoded) | |
1042 | { | |
1043 | return ada_encode_1 (decoded, true); | |
1044 | } | |
1045 | ||
14f9c5c9 | 1046 | /* Return NAME folded to lower case, or, if surrounded by single |
4c4b4cd2 PH |
1047 | quotes, unfolded, but with the quotes stripped away. Result good |
1048 | to next call. */ | |
1049 | ||
d2e4a39e AS |
1050 | char * |
1051 | ada_fold_name (const char *name) | |
14f9c5c9 | 1052 | { |
d2e4a39e | 1053 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
1054 | static size_t fold_buffer_size = 0; |
1055 | ||
1056 | int len = strlen (name); | |
d2e4a39e | 1057 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
1058 | |
1059 | if (name[0] == '\'') | |
1060 | { | |
d2e4a39e AS |
1061 | strncpy (fold_buffer, name + 1, len - 2); |
1062 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
1063 | } |
1064 | else | |
1065 | { | |
1066 | int i; | |
5b4ee69b | 1067 | |
14f9c5c9 | 1068 | for (i = 0; i <= len; i += 1) |
4c4b4cd2 | 1069 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
1070 | } |
1071 | ||
1072 | return fold_buffer; | |
1073 | } | |
1074 | ||
529cad9c PH |
1075 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
1076 | ||
1077 | static int | |
1078 | is_lower_alphanum (const char c) | |
1079 | { | |
1080 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
1081 | } | |
1082 | ||
c90092fe JB |
1083 | /* ENCODED is the linkage name of a symbol and LEN contains its length. |
1084 | This function saves in LEN the length of that same symbol name but | |
1085 | without either of these suffixes: | |
29480c32 JB |
1086 | . .{DIGIT}+ |
1087 | . ${DIGIT}+ | |
1088 | . ___{DIGIT}+ | |
1089 | . __{DIGIT}+. | |
c90092fe | 1090 | |
29480c32 JB |
1091 | These are suffixes introduced by the compiler for entities such as |
1092 | nested subprogram for instance, in order to avoid name clashes. | |
1093 | They do not serve any purpose for the debugger. */ | |
1094 | ||
1095 | static void | |
1096 | ada_remove_trailing_digits (const char *encoded, int *len) | |
1097 | { | |
1098 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
1099 | { | |
1100 | int i = *len - 2; | |
5b4ee69b | 1101 | |
29480c32 JB |
1102 | while (i > 0 && isdigit (encoded[i])) |
1103 | i--; | |
1104 | if (i >= 0 && encoded[i] == '.') | |
1105 | *len = i; | |
1106 | else if (i >= 0 && encoded[i] == '$') | |
1107 | *len = i; | |
61012eef | 1108 | else if (i >= 2 && startswith (encoded + i - 2, "___")) |
29480c32 | 1109 | *len = i - 2; |
61012eef | 1110 | else if (i >= 1 && startswith (encoded + i - 1, "__")) |
29480c32 JB |
1111 | *len = i - 1; |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* Remove the suffix introduced by the compiler for protected object | |
1116 | subprograms. */ | |
1117 | ||
1118 | static void | |
1119 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
1120 | { | |
1121 | /* Remove trailing N. */ | |
1122 | ||
1123 | /* Protected entry subprograms are broken into two | |
1124 | separate subprograms: The first one is unprotected, and has | |
1125 | a 'N' suffix; the second is the protected version, and has | |
0963b4bd | 1126 | the 'P' suffix. The second calls the first one after handling |
29480c32 JB |
1127 | the protection. Since the P subprograms are internally generated, |
1128 | we leave these names undecoded, giving the user a clue that this | |
1129 | entity is internal. */ | |
1130 | ||
1131 | if (*len > 1 | |
1132 | && encoded[*len - 1] == 'N' | |
1133 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
1134 | *len = *len - 1; | |
1135 | } | |
1136 | ||
69fadcdf JB |
1137 | /* Remove trailing X[bn]* suffixes (indicating names in package bodies). */ |
1138 | ||
1139 | static void | |
1140 | ada_remove_Xbn_suffix (const char *encoded, int *len) | |
1141 | { | |
1142 | int i = *len - 1; | |
1143 | ||
1144 | while (i > 0 && (encoded[i] == 'b' || encoded[i] == 'n')) | |
1145 | i--; | |
1146 | ||
1147 | if (encoded[i] != 'X') | |
1148 | return; | |
1149 | ||
1150 | if (i == 0) | |
1151 | return; | |
1152 | ||
1153 | if (isalnum (encoded[i-1])) | |
1154 | *len = i; | |
1155 | } | |
1156 | ||
29480c32 JB |
1157 | /* If ENCODED follows the GNAT entity encoding conventions, then return |
1158 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
1159 | replaced by ENCODED. | |
14f9c5c9 | 1160 | |
4c4b4cd2 | 1161 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 1162 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
1163 | is returned. */ |
1164 | ||
1165 | const char * | |
1166 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
1167 | { |
1168 | int i, j; | |
1169 | int len0; | |
d2e4a39e | 1170 | const char *p; |
4c4b4cd2 | 1171 | char *decoded; |
14f9c5c9 | 1172 | int at_start_name; |
4c4b4cd2 PH |
1173 | static char *decoding_buffer = NULL; |
1174 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 1175 | |
29480c32 JB |
1176 | /* The name of the Ada main procedure starts with "_ada_". |
1177 | This prefix is not part of the decoded name, so skip this part | |
1178 | if we see this prefix. */ | |
61012eef | 1179 | if (startswith (encoded, "_ada_")) |
4c4b4cd2 | 1180 | encoded += 5; |
14f9c5c9 | 1181 | |
29480c32 JB |
1182 | /* If the name starts with '_', then it is not a properly encoded |
1183 | name, so do not attempt to decode it. Similarly, if the name | |
1184 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 1185 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
1186 | goto Suppress; |
1187 | ||
4c4b4cd2 | 1188 | len0 = strlen (encoded); |
4c4b4cd2 | 1189 | |
29480c32 JB |
1190 | ada_remove_trailing_digits (encoded, &len0); |
1191 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 1192 | |
4c4b4cd2 PH |
1193 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
1194 | the suffix is located before the current "end" of ENCODED. We want | |
1195 | to avoid re-matching parts of ENCODED that have previously been | |
1196 | marked as discarded (by decrementing LEN0). */ | |
1197 | p = strstr (encoded, "___"); | |
1198 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
1199 | { |
1200 | if (p[3] == 'X') | |
4c4b4cd2 | 1201 | len0 = p - encoded; |
14f9c5c9 | 1202 | else |
4c4b4cd2 | 1203 | goto Suppress; |
14f9c5c9 | 1204 | } |
4c4b4cd2 | 1205 | |
29480c32 JB |
1206 | /* Remove any trailing TKB suffix. It tells us that this symbol |
1207 | is for the body of a task, but that information does not actually | |
1208 | appear in the decoded name. */ | |
1209 | ||
61012eef | 1210 | if (len0 > 3 && startswith (encoded + len0 - 3, "TKB")) |
14f9c5c9 | 1211 | len0 -= 3; |
76a01679 | 1212 | |
a10967fa JB |
1213 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
1214 | from the TKB suffix because it is used for non-anonymous task | |
1215 | bodies. */ | |
1216 | ||
61012eef | 1217 | if (len0 > 2 && startswith (encoded + len0 - 2, "TB")) |
a10967fa JB |
1218 | len0 -= 2; |
1219 | ||
29480c32 JB |
1220 | /* Remove trailing "B" suffixes. */ |
1221 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
1222 | ||
61012eef | 1223 | if (len0 > 1 && startswith (encoded + len0 - 1, "B")) |
14f9c5c9 AS |
1224 | len0 -= 1; |
1225 | ||
4c4b4cd2 | 1226 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 1227 | |
4c4b4cd2 PH |
1228 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
1229 | decoded = decoding_buffer; | |
14f9c5c9 | 1230 | |
29480c32 JB |
1231 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
1232 | ||
4c4b4cd2 | 1233 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1234 | { |
4c4b4cd2 PH |
1235 | i = len0 - 2; |
1236 | while ((i >= 0 && isdigit (encoded[i])) | |
1237 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
1238 | i -= 1; | |
1239 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
1240 | len0 = i - 1; | |
1241 | else if (encoded[i] == '$') | |
1242 | len0 = i; | |
d2e4a39e | 1243 | } |
14f9c5c9 | 1244 | |
29480c32 JB |
1245 | /* The first few characters that are not alphabetic are not part |
1246 | of any encoding we use, so we can copy them over verbatim. */ | |
1247 | ||
4c4b4cd2 PH |
1248 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
1249 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
1250 | |
1251 | at_start_name = 1; | |
1252 | while (i < len0) | |
1253 | { | |
29480c32 | 1254 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
1255 | if (at_start_name && encoded[i] == 'O') |
1256 | { | |
1257 | int k; | |
5b4ee69b | 1258 | |
4c4b4cd2 PH |
1259 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) |
1260 | { | |
1261 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
1262 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
1263 | op_len - 1) == 0) | |
1264 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1265 | { |
1266 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1267 | at_start_name = 0; | |
1268 | i += op_len; | |
1269 | j += strlen (ada_opname_table[k].decoded); | |
1270 | break; | |
1271 | } | |
1272 | } | |
1273 | if (ada_opname_table[k].encoded != NULL) | |
1274 | continue; | |
1275 | } | |
14f9c5c9 AS |
1276 | at_start_name = 0; |
1277 | ||
529cad9c PH |
1278 | /* Replace "TK__" with "__", which will eventually be translated |
1279 | into "." (just below). */ | |
1280 | ||
61012eef | 1281 | if (i < len0 - 4 && startswith (encoded + i, "TK__")) |
4c4b4cd2 | 1282 | i += 2; |
529cad9c | 1283 | |
29480c32 JB |
1284 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1285 | be translated into "." (just below). These are internal names | |
1286 | generated for anonymous blocks inside which our symbol is nested. */ | |
1287 | ||
1288 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1289 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1290 | && isdigit (encoded [i+4])) | |
1291 | { | |
1292 | int k = i + 5; | |
1293 | ||
1294 | while (k < len0 && isdigit (encoded[k])) | |
1295 | k++; /* Skip any extra digit. */ | |
1296 | ||
1297 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1298 | is indeed followed by "__". */ | |
1299 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1300 | i = k; | |
1301 | } | |
1302 | ||
529cad9c PH |
1303 | /* Remove _E{DIGITS}+[sb] */ |
1304 | ||
1305 | /* Just as for protected object subprograms, there are 2 categories | |
0963b4bd | 1306 | of subprograms created by the compiler for each entry. The first |
529cad9c PH |
1307 | one implements the actual entry code, and has a suffix following |
1308 | the convention above; the second one implements the barrier and | |
1309 | uses the same convention as above, except that the 'E' is replaced | |
1310 | by a 'B'. | |
1311 | ||
1312 | Just as above, we do not decode the name of barrier functions | |
1313 | to give the user a clue that the code he is debugging has been | |
1314 | internally generated. */ | |
1315 | ||
1316 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1317 | && isdigit (encoded[i+2])) | |
1318 | { | |
1319 | int k = i + 3; | |
1320 | ||
1321 | while (k < len0 && isdigit (encoded[k])) | |
1322 | k++; | |
1323 | ||
1324 | if (k < len0 | |
1325 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1326 | { | |
1327 | k++; | |
1328 | /* Just as an extra precaution, make sure that if this | |
1329 | suffix is followed by anything else, it is a '_'. | |
1330 | Otherwise, we matched this sequence by accident. */ | |
1331 | if (k == len0 | |
1332 | || (k < len0 && encoded[k] == '_')) | |
1333 | i = k; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1338 | the GNAT front-end in protected object subprograms. */ | |
1339 | ||
1340 | if (i < len0 + 3 | |
1341 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1342 | { | |
1343 | /* Backtrack a bit up until we reach either the begining of | |
1344 | the encoded name, or "__". Make sure that we only find | |
1345 | digits or lowercase characters. */ | |
1346 | const char *ptr = encoded + i - 1; | |
1347 | ||
1348 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1349 | ptr--; | |
1350 | if (ptr < encoded | |
1351 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1352 | i++; | |
1353 | } | |
1354 | ||
4c4b4cd2 PH |
1355 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1356 | { | |
29480c32 JB |
1357 | /* This is a X[bn]* sequence not separated from the previous |
1358 | part of the name with a non-alpha-numeric character (in other | |
1359 | words, immediately following an alpha-numeric character), then | |
1360 | verify that it is placed at the end of the encoded name. If | |
1361 | not, then the encoding is not valid and we should abort the | |
1362 | decoding. Otherwise, just skip it, it is used in body-nested | |
1363 | package names. */ | |
4c4b4cd2 PH |
1364 | do |
1365 | i += 1; | |
1366 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1367 | if (i < len0) | |
1368 | goto Suppress; | |
1369 | } | |
cdc7bb92 | 1370 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
4c4b4cd2 | 1371 | { |
29480c32 | 1372 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1373 | decoded[j] = '.'; |
1374 | at_start_name = 1; | |
1375 | i += 2; | |
1376 | j += 1; | |
1377 | } | |
14f9c5c9 | 1378 | else |
4c4b4cd2 | 1379 | { |
29480c32 JB |
1380 | /* It's a character part of the decoded name, so just copy it |
1381 | over. */ | |
4c4b4cd2 PH |
1382 | decoded[j] = encoded[i]; |
1383 | i += 1; | |
1384 | j += 1; | |
1385 | } | |
14f9c5c9 | 1386 | } |
4c4b4cd2 | 1387 | decoded[j] = '\000'; |
14f9c5c9 | 1388 | |
29480c32 JB |
1389 | /* Decoded names should never contain any uppercase character. |
1390 | Double-check this, and abort the decoding if we find one. */ | |
1391 | ||
4c4b4cd2 PH |
1392 | for (i = 0; decoded[i] != '\0'; i += 1) |
1393 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1394 | goto Suppress; |
1395 | ||
4c4b4cd2 PH |
1396 | if (strcmp (decoded, encoded) == 0) |
1397 | return encoded; | |
1398 | else | |
1399 | return decoded; | |
14f9c5c9 AS |
1400 | |
1401 | Suppress: | |
4c4b4cd2 PH |
1402 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1403 | decoded = decoding_buffer; | |
1404 | if (encoded[0] == '<') | |
1405 | strcpy (decoded, encoded); | |
14f9c5c9 | 1406 | else |
88c15c34 | 1407 | xsnprintf (decoded, decoding_buffer_size, "<%s>", encoded); |
4c4b4cd2 PH |
1408 | return decoded; |
1409 | ||
1410 | } | |
1411 | ||
1412 | /* Table for keeping permanent unique copies of decoded names. Once | |
1413 | allocated, names in this table are never released. While this is a | |
1414 | storage leak, it should not be significant unless there are massive | |
1415 | changes in the set of decoded names in successive versions of a | |
1416 | symbol table loaded during a single session. */ | |
1417 | static struct htab *decoded_names_store; | |
1418 | ||
1419 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1420 | in the language-specific part of GSYMBOL, if it has not been | |
1421 | previously computed. Tries to save the decoded name in the same | |
1422 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1423 | in any case, the decoded symbol has a lifetime at least that of | |
0963b4bd | 1424 | GSYMBOL). |
4c4b4cd2 PH |
1425 | The GSYMBOL parameter is "mutable" in the C++ sense: logically |
1426 | const, but nevertheless modified to a semantically equivalent form | |
0963b4bd | 1427 | when a decoded name is cached in it. */ |
4c4b4cd2 | 1428 | |
45e6c716 | 1429 | const char * |
f85f34ed | 1430 | ada_decode_symbol (const struct general_symbol_info *arg) |
4c4b4cd2 | 1431 | { |
f85f34ed TT |
1432 | struct general_symbol_info *gsymbol = (struct general_symbol_info *) arg; |
1433 | const char **resultp = | |
615b3f62 | 1434 | &gsymbol->language_specific.demangled_name; |
5b4ee69b | 1435 | |
f85f34ed | 1436 | if (!gsymbol->ada_mangled) |
4c4b4cd2 PH |
1437 | { |
1438 | const char *decoded = ada_decode (gsymbol->name); | |
f85f34ed | 1439 | struct obstack *obstack = gsymbol->language_specific.obstack; |
5b4ee69b | 1440 | |
f85f34ed | 1441 | gsymbol->ada_mangled = 1; |
5b4ee69b | 1442 | |
f85f34ed | 1443 | if (obstack != NULL) |
224c3ddb SM |
1444 | *resultp |
1445 | = (const char *) obstack_copy0 (obstack, decoded, strlen (decoded)); | |
f85f34ed | 1446 | else |
76a01679 | 1447 | { |
f85f34ed TT |
1448 | /* Sometimes, we can't find a corresponding objfile, in |
1449 | which case, we put the result on the heap. Since we only | |
1450 | decode when needed, we hope this usually does not cause a | |
1451 | significant memory leak (FIXME). */ | |
1452 | ||
76a01679 JB |
1453 | char **slot = (char **) htab_find_slot (decoded_names_store, |
1454 | decoded, INSERT); | |
5b4ee69b | 1455 | |
76a01679 JB |
1456 | if (*slot == NULL) |
1457 | *slot = xstrdup (decoded); | |
1458 | *resultp = *slot; | |
1459 | } | |
4c4b4cd2 | 1460 | } |
14f9c5c9 | 1461 | |
4c4b4cd2 PH |
1462 | return *resultp; |
1463 | } | |
76a01679 | 1464 | |
2c0b251b | 1465 | static char * |
76a01679 | 1466 | ada_la_decode (const char *encoded, int options) |
4c4b4cd2 PH |
1467 | { |
1468 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1469 | } |
1470 | ||
8b302db8 TT |
1471 | /* Implement la_sniff_from_mangled_name for Ada. */ |
1472 | ||
1473 | static int | |
1474 | ada_sniff_from_mangled_name (const char *mangled, char **out) | |
1475 | { | |
1476 | const char *demangled = ada_decode (mangled); | |
1477 | ||
1478 | *out = NULL; | |
1479 | ||
1480 | if (demangled != mangled && demangled != NULL && demangled[0] != '<') | |
1481 | { | |
1482 | /* Set the gsymbol language to Ada, but still return 0. | |
1483 | Two reasons for that: | |
1484 | ||
1485 | 1. For Ada, we prefer computing the symbol's decoded name | |
1486 | on the fly rather than pre-compute it, in order to save | |
1487 | memory (Ada projects are typically very large). | |
1488 | ||
1489 | 2. There are some areas in the definition of the GNAT | |
1490 | encoding where, with a bit of bad luck, we might be able | |
1491 | to decode a non-Ada symbol, generating an incorrect | |
1492 | demangled name (Eg: names ending with "TB" for instance | |
1493 | are identified as task bodies and so stripped from | |
1494 | the decoded name returned). | |
1495 | ||
1496 | Returning 1, here, but not setting *DEMANGLED, helps us get a | |
1497 | little bit of the best of both worlds. Because we're last, | |
1498 | we should not affect any of the other languages that were | |
1499 | able to demangle the symbol before us; we get to correctly | |
1500 | tag Ada symbols as such; and even if we incorrectly tagged a | |
1501 | non-Ada symbol, which should be rare, any routing through the | |
1502 | Ada language should be transparent (Ada tries to behave much | |
1503 | like C/C++ with non-Ada symbols). */ | |
1504 | return 1; | |
1505 | } | |
1506 | ||
1507 | return 0; | |
1508 | } | |
1509 | ||
14f9c5c9 | 1510 | \f |
d2e4a39e | 1511 | |
4c4b4cd2 | 1512 | /* Arrays */ |
14f9c5c9 | 1513 | |
28c85d6c JB |
1514 | /* Assuming that INDEX_DESC_TYPE is an ___XA structure, a structure |
1515 | generated by the GNAT compiler to describe the index type used | |
1516 | for each dimension of an array, check whether it follows the latest | |
1517 | known encoding. If not, fix it up to conform to the latest encoding. | |
1518 | Otherwise, do nothing. This function also does nothing if | |
1519 | INDEX_DESC_TYPE is NULL. | |
1520 | ||
1521 | The GNAT encoding used to describle the array index type evolved a bit. | |
1522 | Initially, the information would be provided through the name of each | |
1523 | field of the structure type only, while the type of these fields was | |
1524 | described as unspecified and irrelevant. The debugger was then expected | |
1525 | to perform a global type lookup using the name of that field in order | |
1526 | to get access to the full index type description. Because these global | |
1527 | lookups can be very expensive, the encoding was later enhanced to make | |
1528 | the global lookup unnecessary by defining the field type as being | |
1529 | the full index type description. | |
1530 | ||
1531 | The purpose of this routine is to allow us to support older versions | |
1532 | of the compiler by detecting the use of the older encoding, and by | |
1533 | fixing up the INDEX_DESC_TYPE to follow the new one (at this point, | |
1534 | we essentially replace each field's meaningless type by the associated | |
1535 | index subtype). */ | |
1536 | ||
1537 | void | |
1538 | ada_fixup_array_indexes_type (struct type *index_desc_type) | |
1539 | { | |
1540 | int i; | |
1541 | ||
1542 | if (index_desc_type == NULL) | |
1543 | return; | |
1544 | gdb_assert (TYPE_NFIELDS (index_desc_type) > 0); | |
1545 | ||
1546 | /* Check if INDEX_DESC_TYPE follows the older encoding (it is sufficient | |
1547 | to check one field only, no need to check them all). If not, return | |
1548 | now. | |
1549 | ||
1550 | If our INDEX_DESC_TYPE was generated using the older encoding, | |
1551 | the field type should be a meaningless integer type whose name | |
1552 | is not equal to the field name. */ | |
1553 | if (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)) != NULL | |
1554 | && strcmp (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)), | |
1555 | TYPE_FIELD_NAME (index_desc_type, 0)) == 0) | |
1556 | return; | |
1557 | ||
1558 | /* Fixup each field of INDEX_DESC_TYPE. */ | |
1559 | for (i = 0; i < TYPE_NFIELDS (index_desc_type); i++) | |
1560 | { | |
0d5cff50 | 1561 | const char *name = TYPE_FIELD_NAME (index_desc_type, i); |
28c85d6c JB |
1562 | struct type *raw_type = ada_check_typedef (ada_find_any_type (name)); |
1563 | ||
1564 | if (raw_type) | |
1565 | TYPE_FIELD_TYPE (index_desc_type, i) = raw_type; | |
1566 | } | |
1567 | } | |
1568 | ||
4c4b4cd2 | 1569 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1570 | |
a121b7c1 | 1571 | static const char *bound_name[] = { |
d2e4a39e | 1572 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", |
14f9c5c9 AS |
1573 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1574 | }; | |
1575 | ||
1576 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1577 | ||
4c4b4cd2 | 1578 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1579 | |
14f9c5c9 | 1580 | |
4c4b4cd2 PH |
1581 | /* The desc_* routines return primitive portions of array descriptors |
1582 | (fat pointers). */ | |
14f9c5c9 AS |
1583 | |
1584 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1585 | level of indirection, if needed. */ |
1586 | ||
d2e4a39e AS |
1587 | static struct type * |
1588 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1589 | { |
1590 | if (type == NULL) | |
1591 | return NULL; | |
61ee279c | 1592 | type = ada_check_typedef (type); |
720d1a40 JB |
1593 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
1594 | type = ada_typedef_target_type (type); | |
1595 | ||
1265e4aa JB |
1596 | if (type != NULL |
1597 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1598 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1599 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1600 | else |
1601 | return type; | |
1602 | } | |
1603 | ||
4c4b4cd2 PH |
1604 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1605 | ||
14f9c5c9 | 1606 | static int |
d2e4a39e | 1607 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1608 | { |
d2e4a39e | 1609 | return |
14f9c5c9 AS |
1610 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1611 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1612 | } | |
1613 | ||
4c4b4cd2 PH |
1614 | /* The descriptor type for thin pointer type TYPE. */ |
1615 | ||
d2e4a39e AS |
1616 | static struct type * |
1617 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1618 | { |
d2e4a39e | 1619 | struct type *base_type = desc_base_type (type); |
5b4ee69b | 1620 | |
14f9c5c9 AS |
1621 | if (base_type == NULL) |
1622 | return NULL; | |
1623 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1624 | return base_type; | |
d2e4a39e | 1625 | else |
14f9c5c9 | 1626 | { |
d2e4a39e | 1627 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
5b4ee69b | 1628 | |
14f9c5c9 | 1629 | if (alt_type == NULL) |
4c4b4cd2 | 1630 | return base_type; |
14f9c5c9 | 1631 | else |
4c4b4cd2 | 1632 | return alt_type; |
14f9c5c9 AS |
1633 | } |
1634 | } | |
1635 | ||
4c4b4cd2 PH |
1636 | /* A pointer to the array data for thin-pointer value VAL. */ |
1637 | ||
d2e4a39e AS |
1638 | static struct value * |
1639 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1640 | { |
828292f2 | 1641 | struct type *type = ada_check_typedef (value_type (val)); |
556bdfd4 | 1642 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
5b4ee69b | 1643 | |
556bdfd4 UW |
1644 | data_type = lookup_pointer_type (data_type); |
1645 | ||
14f9c5c9 | 1646 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
556bdfd4 | 1647 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1648 | else |
42ae5230 | 1649 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1650 | } |
1651 | ||
4c4b4cd2 PH |
1652 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1653 | ||
14f9c5c9 | 1654 | static int |
d2e4a39e | 1655 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1656 | { |
1657 | type = desc_base_type (type); | |
1658 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1659 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1660 | } |
1661 | ||
4c4b4cd2 PH |
1662 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1663 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1664 | |
d2e4a39e AS |
1665 | static struct type * |
1666 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1667 | { |
d2e4a39e | 1668 | struct type *r; |
14f9c5c9 AS |
1669 | |
1670 | type = desc_base_type (type); | |
1671 | ||
1672 | if (type == NULL) | |
1673 | return NULL; | |
1674 | else if (is_thin_pntr (type)) | |
1675 | { | |
1676 | type = thin_descriptor_type (type); | |
1677 | if (type == NULL) | |
4c4b4cd2 | 1678 | return NULL; |
14f9c5c9 AS |
1679 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1680 | if (r != NULL) | |
61ee279c | 1681 | return ada_check_typedef (r); |
14f9c5c9 AS |
1682 | } |
1683 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1684 | { | |
1685 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1686 | if (r != NULL) | |
61ee279c | 1687 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1688 | } |
1689 | return NULL; | |
1690 | } | |
1691 | ||
1692 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1693 | one, a pointer to its bounds data. Otherwise NULL. */ |
1694 | ||
d2e4a39e AS |
1695 | static struct value * |
1696 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1697 | { |
df407dfe | 1698 | struct type *type = ada_check_typedef (value_type (arr)); |
5b4ee69b | 1699 | |
d2e4a39e | 1700 | if (is_thin_pntr (type)) |
14f9c5c9 | 1701 | { |
d2e4a39e | 1702 | struct type *bounds_type = |
4c4b4cd2 | 1703 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1704 | LONGEST addr; |
1705 | ||
4cdfadb1 | 1706 | if (bounds_type == NULL) |
323e0a4a | 1707 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1708 | |
1709 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1710 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1711 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1712 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1713 | addr = value_as_long (arr); |
d2e4a39e | 1714 | else |
42ae5230 | 1715 | addr = value_address (arr); |
14f9c5c9 | 1716 | |
d2e4a39e | 1717 | return |
4c4b4cd2 PH |
1718 | value_from_longest (lookup_pointer_type (bounds_type), |
1719 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1720 | } |
1721 | ||
1722 | else if (is_thick_pntr (type)) | |
05e522ef JB |
1723 | { |
1724 | struct value *p_bounds = value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, | |
1725 | _("Bad GNAT array descriptor")); | |
1726 | struct type *p_bounds_type = value_type (p_bounds); | |
1727 | ||
1728 | if (p_bounds_type | |
1729 | && TYPE_CODE (p_bounds_type) == TYPE_CODE_PTR) | |
1730 | { | |
1731 | struct type *target_type = TYPE_TARGET_TYPE (p_bounds_type); | |
1732 | ||
1733 | if (TYPE_STUB (target_type)) | |
1734 | p_bounds = value_cast (lookup_pointer_type | |
1735 | (ada_check_typedef (target_type)), | |
1736 | p_bounds); | |
1737 | } | |
1738 | else | |
1739 | error (_("Bad GNAT array descriptor")); | |
1740 | ||
1741 | return p_bounds; | |
1742 | } | |
14f9c5c9 AS |
1743 | else |
1744 | return NULL; | |
1745 | } | |
1746 | ||
4c4b4cd2 PH |
1747 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1748 | position of the field containing the address of the bounds data. */ | |
1749 | ||
14f9c5c9 | 1750 | static int |
d2e4a39e | 1751 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1752 | { |
1753 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1754 | } | |
1755 | ||
1756 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1757 | size of the field containing the address of the bounds data. */ |
1758 | ||
14f9c5c9 | 1759 | static int |
d2e4a39e | 1760 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1761 | { |
1762 | type = desc_base_type (type); | |
1763 | ||
d2e4a39e | 1764 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1765 | return TYPE_FIELD_BITSIZE (type, 1); |
1766 | else | |
61ee279c | 1767 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1768 | } |
1769 | ||
4c4b4cd2 | 1770 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1771 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1772 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1773 | data. */ | |
4c4b4cd2 | 1774 | |
d2e4a39e | 1775 | static struct type * |
556bdfd4 | 1776 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1777 | { |
1778 | type = desc_base_type (type); | |
1779 | ||
4c4b4cd2 | 1780 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1781 | if (is_thin_pntr (type)) |
556bdfd4 | 1782 | return desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1)); |
14f9c5c9 | 1783 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1784 | { |
1785 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1786 | ||
1787 | if (data_type | |
1788 | && TYPE_CODE (ada_check_typedef (data_type)) == TYPE_CODE_PTR) | |
05e522ef | 1789 | return ada_check_typedef (TYPE_TARGET_TYPE (data_type)); |
556bdfd4 UW |
1790 | } |
1791 | ||
1792 | return NULL; | |
14f9c5c9 AS |
1793 | } |
1794 | ||
1795 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1796 | its array data. */ | |
4c4b4cd2 | 1797 | |
d2e4a39e AS |
1798 | static struct value * |
1799 | desc_data (struct value *arr) | |
14f9c5c9 | 1800 | { |
df407dfe | 1801 | struct type *type = value_type (arr); |
5b4ee69b | 1802 | |
14f9c5c9 AS |
1803 | if (is_thin_pntr (type)) |
1804 | return thin_data_pntr (arr); | |
1805 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1806 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1807 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1808 | else |
1809 | return NULL; | |
1810 | } | |
1811 | ||
1812 | ||
1813 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1814 | position of the field containing the address of the data. */ |
1815 | ||
14f9c5c9 | 1816 | static int |
d2e4a39e | 1817 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1818 | { |
1819 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1820 | } | |
1821 | ||
1822 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1823 | size of the field containing the address of the data. */ |
1824 | ||
14f9c5c9 | 1825 | static int |
d2e4a39e | 1826 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1827 | { |
1828 | type = desc_base_type (type); | |
1829 | ||
1830 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1831 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1832 | else |
14f9c5c9 AS |
1833 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1834 | } | |
1835 | ||
4c4b4cd2 | 1836 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1837 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1838 | bound, if WHICH is 1. The first bound is I=1. */ |
1839 | ||
d2e4a39e AS |
1840 | static struct value * |
1841 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1842 | { |
d2e4a39e | 1843 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1844 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1845 | } |
1846 | ||
1847 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1848 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1849 | bound, if WHICH is 1. The first bound is I=1. */ |
1850 | ||
14f9c5c9 | 1851 | static int |
d2e4a39e | 1852 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1853 | { |
d2e4a39e | 1854 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1855 | } |
1856 | ||
1857 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1858 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1859 | bound, if WHICH is 1. The first bound is I=1. */ |
1860 | ||
76a01679 | 1861 | static int |
d2e4a39e | 1862 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1863 | { |
1864 | type = desc_base_type (type); | |
1865 | ||
d2e4a39e AS |
1866 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1867 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1868 | else | |
1869 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1870 | } |
1871 | ||
1872 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1873 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1874 | ||
d2e4a39e AS |
1875 | static struct type * |
1876 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1877 | { |
1878 | type = desc_base_type (type); | |
1879 | ||
1880 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1881 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1882 | else | |
14f9c5c9 AS |
1883 | return NULL; |
1884 | } | |
1885 | ||
4c4b4cd2 PH |
1886 | /* The number of index positions in the array-bounds type TYPE. |
1887 | Return 0 if TYPE is NULL. */ | |
1888 | ||
14f9c5c9 | 1889 | static int |
d2e4a39e | 1890 | desc_arity (struct type *type) |
14f9c5c9 AS |
1891 | { |
1892 | type = desc_base_type (type); | |
1893 | ||
1894 | if (type != NULL) | |
1895 | return TYPE_NFIELDS (type) / 2; | |
1896 | return 0; | |
1897 | } | |
1898 | ||
4c4b4cd2 PH |
1899 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1900 | an array descriptor type (representing an unconstrained array | |
1901 | type). */ | |
1902 | ||
76a01679 JB |
1903 | static int |
1904 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1905 | { |
1906 | if (type == NULL) | |
1907 | return 0; | |
61ee279c | 1908 | type = ada_check_typedef (type); |
4c4b4cd2 | 1909 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1910 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1911 | } |
1912 | ||
52ce6436 | 1913 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
0963b4bd | 1914 | * to one. */ |
52ce6436 | 1915 | |
2c0b251b | 1916 | static int |
52ce6436 PH |
1917 | ada_is_array_type (struct type *type) |
1918 | { | |
1919 | while (type != NULL | |
1920 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1921 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1922 | type = TYPE_TARGET_TYPE (type); | |
1923 | return ada_is_direct_array_type (type); | |
1924 | } | |
1925 | ||
4c4b4cd2 | 1926 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1927 | |
14f9c5c9 | 1928 | int |
4c4b4cd2 | 1929 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1930 | { |
1931 | if (type == NULL) | |
1932 | return 0; | |
61ee279c | 1933 | type = ada_check_typedef (type); |
14f9c5c9 | 1934 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 | 1935 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
b0dd7688 JB |
1936 | && TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type))) |
1937 | == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1938 | } |
1939 | ||
4c4b4cd2 PH |
1940 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1941 | ||
14f9c5c9 | 1942 | int |
4c4b4cd2 | 1943 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1944 | { |
556bdfd4 | 1945 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
1946 | |
1947 | if (type == NULL) | |
1948 | return 0; | |
61ee279c | 1949 | type = ada_check_typedef (type); |
556bdfd4 UW |
1950 | return (data_type != NULL |
1951 | && TYPE_CODE (data_type) == TYPE_CODE_ARRAY | |
1952 | && desc_arity (desc_bounds_type (type)) > 0); | |
14f9c5c9 AS |
1953 | } |
1954 | ||
1955 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1956 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1957 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1958 | is still needed. */ |
1959 | ||
14f9c5c9 | 1960 | int |
ebf56fd3 | 1961 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1962 | { |
d2e4a39e | 1963 | return |
14f9c5c9 AS |
1964 | type != NULL |
1965 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1966 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1967 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1968 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1969 | } |
1970 | ||
1971 | ||
4c4b4cd2 | 1972 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1973 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1974 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1975 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1976 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1977 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1978 | a descriptor. */ |
d2e4a39e AS |
1979 | struct type * |
1980 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1981 | { |
ad82864c JB |
1982 | if (ada_is_constrained_packed_array_type (value_type (arr))) |
1983 | return decode_constrained_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1984 | |
df407dfe AC |
1985 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1986 | return value_type (arr); | |
d2e4a39e AS |
1987 | |
1988 | if (!bounds) | |
ad82864c JB |
1989 | { |
1990 | struct type *array_type = | |
1991 | ada_check_typedef (desc_data_target_type (value_type (arr))); | |
1992 | ||
1993 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
1994 | TYPE_FIELD_BITSIZE (array_type, 0) = | |
1995 | decode_packed_array_bitsize (value_type (arr)); | |
1996 | ||
1997 | return array_type; | |
1998 | } | |
14f9c5c9 AS |
1999 | else |
2000 | { | |
d2e4a39e | 2001 | struct type *elt_type; |
14f9c5c9 | 2002 | int arity; |
d2e4a39e | 2003 | struct value *descriptor; |
14f9c5c9 | 2004 | |
df407dfe AC |
2005 | elt_type = ada_array_element_type (value_type (arr), -1); |
2006 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 2007 | |
d2e4a39e | 2008 | if (elt_type == NULL || arity == 0) |
df407dfe | 2009 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2010 | |
2011 | descriptor = desc_bounds (arr); | |
d2e4a39e | 2012 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 2013 | return NULL; |
d2e4a39e | 2014 | while (arity > 0) |
4c4b4cd2 | 2015 | { |
e9bb382b UW |
2016 | struct type *range_type = alloc_type_copy (value_type (arr)); |
2017 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
4c4b4cd2 PH |
2018 | struct value *low = desc_one_bound (descriptor, arity, 0); |
2019 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
4c4b4cd2 | 2020 | |
5b4ee69b | 2021 | arity -= 1; |
0c9c3474 SA |
2022 | create_static_range_type (range_type, value_type (low), |
2023 | longest_to_int (value_as_long (low)), | |
2024 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 | 2025 | elt_type = create_array_type (array_type, elt_type, range_type); |
ad82864c JB |
2026 | |
2027 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
e67ad678 JB |
2028 | { |
2029 | /* We need to store the element packed bitsize, as well as | |
2030 | recompute the array size, because it was previously | |
2031 | computed based on the unpacked element size. */ | |
2032 | LONGEST lo = value_as_long (low); | |
2033 | LONGEST hi = value_as_long (high); | |
2034 | ||
2035 | TYPE_FIELD_BITSIZE (elt_type, 0) = | |
2036 | decode_packed_array_bitsize (value_type (arr)); | |
2037 | /* If the array has no element, then the size is already | |
2038 | zero, and does not need to be recomputed. */ | |
2039 | if (lo < hi) | |
2040 | { | |
2041 | int array_bitsize = | |
2042 | (hi - lo + 1) * TYPE_FIELD_BITSIZE (elt_type, 0); | |
2043 | ||
2044 | TYPE_LENGTH (array_type) = (array_bitsize + 7) / 8; | |
2045 | } | |
2046 | } | |
4c4b4cd2 | 2047 | } |
14f9c5c9 AS |
2048 | |
2049 | return lookup_pointer_type (elt_type); | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
2054 | Otherwise, returns either a standard GDB array with bounds set |
2055 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
2056 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
2057 | ||
d2e4a39e AS |
2058 | struct value * |
2059 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 2060 | { |
df407dfe | 2061 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2062 | { |
d2e4a39e | 2063 | struct type *arrType = ada_type_of_array (arr, 1); |
5b4ee69b | 2064 | |
14f9c5c9 | 2065 | if (arrType == NULL) |
4c4b4cd2 | 2066 | return NULL; |
14f9c5c9 AS |
2067 | return value_cast (arrType, value_copy (desc_data (arr))); |
2068 | } | |
ad82864c JB |
2069 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2070 | return decode_constrained_packed_array (arr); | |
14f9c5c9 AS |
2071 | else |
2072 | return arr; | |
2073 | } | |
2074 | ||
2075 | /* If ARR does not represent an array, returns ARR unchanged. | |
2076 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
2077 | be ARR itself if it already is in the proper form). */ |
2078 | ||
720d1a40 | 2079 | struct value * |
d2e4a39e | 2080 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 2081 | { |
df407dfe | 2082 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2083 | { |
d2e4a39e | 2084 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
5b4ee69b | 2085 | |
14f9c5c9 | 2086 | if (arrVal == NULL) |
323e0a4a | 2087 | error (_("Bounds unavailable for null array pointer.")); |
c1b5a1a6 | 2088 | ada_ensure_varsize_limit (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
2089 | return value_ind (arrVal); |
2090 | } | |
ad82864c JB |
2091 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2092 | return decode_constrained_packed_array (arr); | |
d2e4a39e | 2093 | else |
14f9c5c9 AS |
2094 | return arr; |
2095 | } | |
2096 | ||
2097 | /* If TYPE represents a GNAT array type, return it translated to an | |
2098 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
2099 | packing). For other types, is the identity. */ |
2100 | ||
d2e4a39e AS |
2101 | struct type * |
2102 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 2103 | { |
ad82864c JB |
2104 | if (ada_is_constrained_packed_array_type (type)) |
2105 | return decode_constrained_packed_array_type (type); | |
17280b9f UW |
2106 | |
2107 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 2108 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
2109 | |
2110 | return type; | |
14f9c5c9 AS |
2111 | } |
2112 | ||
4c4b4cd2 PH |
2113 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
2114 | ||
ad82864c JB |
2115 | static int |
2116 | ada_is_packed_array_type (struct type *type) | |
14f9c5c9 AS |
2117 | { |
2118 | if (type == NULL) | |
2119 | return 0; | |
4c4b4cd2 | 2120 | type = desc_base_type (type); |
61ee279c | 2121 | type = ada_check_typedef (type); |
d2e4a39e | 2122 | return |
14f9c5c9 AS |
2123 | ada_type_name (type) != NULL |
2124 | && strstr (ada_type_name (type), "___XP") != NULL; | |
2125 | } | |
2126 | ||
ad82864c JB |
2127 | /* Non-zero iff TYPE represents a standard GNAT constrained |
2128 | packed-array type. */ | |
2129 | ||
2130 | int | |
2131 | ada_is_constrained_packed_array_type (struct type *type) | |
2132 | { | |
2133 | return ada_is_packed_array_type (type) | |
2134 | && !ada_is_array_descriptor_type (type); | |
2135 | } | |
2136 | ||
2137 | /* Non-zero iff TYPE represents an array descriptor for a | |
2138 | unconstrained packed-array type. */ | |
2139 | ||
2140 | static int | |
2141 | ada_is_unconstrained_packed_array_type (struct type *type) | |
2142 | { | |
2143 | return ada_is_packed_array_type (type) | |
2144 | && ada_is_array_descriptor_type (type); | |
2145 | } | |
2146 | ||
2147 | /* Given that TYPE encodes a packed array type (constrained or unconstrained), | |
2148 | return the size of its elements in bits. */ | |
2149 | ||
2150 | static long | |
2151 | decode_packed_array_bitsize (struct type *type) | |
2152 | { | |
0d5cff50 DE |
2153 | const char *raw_name; |
2154 | const char *tail; | |
ad82864c JB |
2155 | long bits; |
2156 | ||
720d1a40 JB |
2157 | /* Access to arrays implemented as fat pointers are encoded as a typedef |
2158 | of the fat pointer type. We need the name of the fat pointer type | |
2159 | to do the decoding, so strip the typedef layer. */ | |
2160 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
2161 | type = ada_typedef_target_type (type); | |
2162 | ||
2163 | raw_name = ada_type_name (ada_check_typedef (type)); | |
ad82864c JB |
2164 | if (!raw_name) |
2165 | raw_name = ada_type_name (desc_base_type (type)); | |
2166 | ||
2167 | if (!raw_name) | |
2168 | return 0; | |
2169 | ||
2170 | tail = strstr (raw_name, "___XP"); | |
720d1a40 | 2171 | gdb_assert (tail != NULL); |
ad82864c JB |
2172 | |
2173 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) | |
2174 | { | |
2175 | lim_warning | |
2176 | (_("could not understand bit size information on packed array")); | |
2177 | return 0; | |
2178 | } | |
2179 | ||
2180 | return bits; | |
2181 | } | |
2182 | ||
14f9c5c9 AS |
2183 | /* Given that TYPE is a standard GDB array type with all bounds filled |
2184 | in, and that the element size of its ultimate scalar constituents | |
2185 | (that is, either its elements, or, if it is an array of arrays, its | |
2186 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
2187 | but with the bit sizes of its elements (and those of any | |
2188 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 | 2189 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
4a46959e JB |
2190 | in bits. |
2191 | ||
2192 | Note that, for arrays whose index type has an XA encoding where | |
2193 | a bound references a record discriminant, getting that discriminant, | |
2194 | and therefore the actual value of that bound, is not possible | |
2195 | because none of the given parameters gives us access to the record. | |
2196 | This function assumes that it is OK in the context where it is being | |
2197 | used to return an array whose bounds are still dynamic and where | |
2198 | the length is arbitrary. */ | |
4c4b4cd2 | 2199 | |
d2e4a39e | 2200 | static struct type * |
ad82864c | 2201 | constrained_packed_array_type (struct type *type, long *elt_bits) |
14f9c5c9 | 2202 | { |
d2e4a39e AS |
2203 | struct type *new_elt_type; |
2204 | struct type *new_type; | |
99b1c762 JB |
2205 | struct type *index_type_desc; |
2206 | struct type *index_type; | |
14f9c5c9 AS |
2207 | LONGEST low_bound, high_bound; |
2208 | ||
61ee279c | 2209 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2210 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
2211 | return type; | |
2212 | ||
99b1c762 JB |
2213 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
2214 | if (index_type_desc) | |
2215 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, 0), | |
2216 | NULL); | |
2217 | else | |
2218 | index_type = TYPE_INDEX_TYPE (type); | |
2219 | ||
e9bb382b | 2220 | new_type = alloc_type_copy (type); |
ad82864c JB |
2221 | new_elt_type = |
2222 | constrained_packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), | |
2223 | elt_bits); | |
99b1c762 | 2224 | create_array_type (new_type, new_elt_type, index_type); |
14f9c5c9 AS |
2225 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
2226 | TYPE_NAME (new_type) = ada_type_name (type); | |
2227 | ||
4a46959e JB |
2228 | if ((TYPE_CODE (check_typedef (index_type)) == TYPE_CODE_RANGE |
2229 | && is_dynamic_type (check_typedef (index_type))) | |
2230 | || get_discrete_bounds (index_type, &low_bound, &high_bound) < 0) | |
14f9c5c9 AS |
2231 | low_bound = high_bound = 0; |
2232 | if (high_bound < low_bound) | |
2233 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 2234 | else |
14f9c5c9 AS |
2235 | { |
2236 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 2237 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 2238 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
2239 | } |
2240 | ||
876cecd0 | 2241 | TYPE_FIXED_INSTANCE (new_type) = 1; |
14f9c5c9 AS |
2242 | return new_type; |
2243 | } | |
2244 | ||
ad82864c JB |
2245 | /* The array type encoded by TYPE, where |
2246 | ada_is_constrained_packed_array_type (TYPE). */ | |
4c4b4cd2 | 2247 | |
d2e4a39e | 2248 | static struct type * |
ad82864c | 2249 | decode_constrained_packed_array_type (struct type *type) |
d2e4a39e | 2250 | { |
0d5cff50 | 2251 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
727e3d2e | 2252 | char *name; |
0d5cff50 | 2253 | const char *tail; |
d2e4a39e | 2254 | struct type *shadow_type; |
14f9c5c9 | 2255 | long bits; |
14f9c5c9 | 2256 | |
727e3d2e JB |
2257 | if (!raw_name) |
2258 | raw_name = ada_type_name (desc_base_type (type)); | |
2259 | ||
2260 | if (!raw_name) | |
2261 | return NULL; | |
2262 | ||
2263 | name = (char *) alloca (strlen (raw_name) + 1); | |
2264 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
2265 | type = desc_base_type (type); |
2266 | ||
14f9c5c9 AS |
2267 | memcpy (name, raw_name, tail - raw_name); |
2268 | name[tail - raw_name] = '\000'; | |
2269 | ||
b4ba55a1 JB |
2270 | shadow_type = ada_find_parallel_type_with_name (type, name); |
2271 | ||
2272 | if (shadow_type == NULL) | |
14f9c5c9 | 2273 | { |
323e0a4a | 2274 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
2275 | return NULL; |
2276 | } | |
f168693b | 2277 | shadow_type = check_typedef (shadow_type); |
14f9c5c9 AS |
2278 | |
2279 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
2280 | { | |
0963b4bd MS |
2281 | lim_warning (_("could not understand bounds " |
2282 | "information on packed array")); | |
14f9c5c9 AS |
2283 | return NULL; |
2284 | } | |
d2e4a39e | 2285 | |
ad82864c JB |
2286 | bits = decode_packed_array_bitsize (type); |
2287 | return constrained_packed_array_type (shadow_type, &bits); | |
14f9c5c9 AS |
2288 | } |
2289 | ||
ad82864c JB |
2290 | /* Given that ARR is a struct value *indicating a GNAT constrained packed |
2291 | array, returns a simple array that denotes that array. Its type is a | |
14f9c5c9 AS |
2292 | standard GDB array type except that the BITSIZEs of the array |
2293 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 2294 | type length is set appropriately. */ |
14f9c5c9 | 2295 | |
d2e4a39e | 2296 | static struct value * |
ad82864c | 2297 | decode_constrained_packed_array (struct value *arr) |
14f9c5c9 | 2298 | { |
4c4b4cd2 | 2299 | struct type *type; |
14f9c5c9 | 2300 | |
11aa919a PMR |
2301 | /* If our value is a pointer, then dereference it. Likewise if |
2302 | the value is a reference. Make sure that this operation does not | |
2303 | cause the target type to be fixed, as this would indirectly cause | |
2304 | this array to be decoded. The rest of the routine assumes that | |
2305 | the array hasn't been decoded yet, so we use the basic "coerce_ref" | |
2306 | and "value_ind" routines to perform the dereferencing, as opposed | |
2307 | to using "ada_coerce_ref" or "ada_value_ind". */ | |
2308 | arr = coerce_ref (arr); | |
828292f2 | 2309 | if (TYPE_CODE (ada_check_typedef (value_type (arr))) == TYPE_CODE_PTR) |
284614f0 | 2310 | arr = value_ind (arr); |
4c4b4cd2 | 2311 | |
ad82864c | 2312 | type = decode_constrained_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
2313 | if (type == NULL) |
2314 | { | |
323e0a4a | 2315 | error (_("can't unpack array")); |
14f9c5c9 AS |
2316 | return NULL; |
2317 | } | |
61ee279c | 2318 | |
50810684 | 2319 | if (gdbarch_bits_big_endian (get_type_arch (value_type (arr))) |
32c9a795 | 2320 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
2321 | { |
2322 | /* This is a (right-justified) modular type representing a packed | |
2323 | array with no wrapper. In order to interpret the value through | |
2324 | the (left-justified) packed array type we just built, we must | |
2325 | first left-justify it. */ | |
2326 | int bit_size, bit_pos; | |
2327 | ULONGEST mod; | |
2328 | ||
df407dfe | 2329 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
2330 | bit_size = 0; |
2331 | while (mod > 0) | |
2332 | { | |
2333 | bit_size += 1; | |
2334 | mod >>= 1; | |
2335 | } | |
df407dfe | 2336 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
2337 | arr = ada_value_primitive_packed_val (arr, NULL, |
2338 | bit_pos / HOST_CHAR_BIT, | |
2339 | bit_pos % HOST_CHAR_BIT, | |
2340 | bit_size, | |
2341 | type); | |
2342 | } | |
2343 | ||
4c4b4cd2 | 2344 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
2345 | } |
2346 | ||
2347 | ||
2348 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 2349 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 2350 | |
d2e4a39e AS |
2351 | static struct value * |
2352 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2353 | { |
2354 | int i; | |
2355 | int bits, elt_off, bit_off; | |
2356 | long elt_total_bit_offset; | |
d2e4a39e AS |
2357 | struct type *elt_type; |
2358 | struct value *v; | |
14f9c5c9 AS |
2359 | |
2360 | bits = 0; | |
2361 | elt_total_bit_offset = 0; | |
df407dfe | 2362 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 2363 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 2364 | { |
d2e4a39e | 2365 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
2366 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
2367 | error | |
0963b4bd MS |
2368 | (_("attempt to do packed indexing of " |
2369 | "something other than a packed array")); | |
14f9c5c9 | 2370 | else |
4c4b4cd2 PH |
2371 | { |
2372 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
2373 | LONGEST lowerbound, upperbound; | |
2374 | LONGEST idx; | |
2375 | ||
2376 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
2377 | { | |
323e0a4a | 2378 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
2379 | lowerbound = upperbound = 0; |
2380 | } | |
2381 | ||
3cb382c9 | 2382 | idx = pos_atr (ind[i]); |
4c4b4cd2 | 2383 | if (idx < lowerbound || idx > upperbound) |
0963b4bd MS |
2384 | lim_warning (_("packed array index %ld out of bounds"), |
2385 | (long) idx); | |
4c4b4cd2 PH |
2386 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
2387 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 2388 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 2389 | } |
14f9c5c9 AS |
2390 | } |
2391 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
2392 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
2393 | |
2394 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 2395 | bits, elt_type); |
14f9c5c9 AS |
2396 | return v; |
2397 | } | |
2398 | ||
4c4b4cd2 | 2399 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
2400 | |
2401 | static int | |
d2e4a39e | 2402 | has_negatives (struct type *type) |
14f9c5c9 | 2403 | { |
d2e4a39e AS |
2404 | switch (TYPE_CODE (type)) |
2405 | { | |
2406 | default: | |
2407 | return 0; | |
2408 | case TYPE_CODE_INT: | |
2409 | return !TYPE_UNSIGNED (type); | |
2410 | case TYPE_CODE_RANGE: | |
2411 | return TYPE_LOW_BOUND (type) < 0; | |
2412 | } | |
14f9c5c9 | 2413 | } |
d2e4a39e | 2414 | |
f93fca70 | 2415 | /* With SRC being a buffer containing BIT_SIZE bits of data at BIT_OFFSET, |
5b639dea | 2416 | unpack that data into UNPACKED. UNPACKED_LEN is the size in bytes of |
f93fca70 | 2417 | the unpacked buffer. |
14f9c5c9 | 2418 | |
5b639dea JB |
2419 | The size of the unpacked buffer (UNPACKED_LEN) is expected to be large |
2420 | enough to contain at least BIT_OFFSET bits. If not, an error is raised. | |
2421 | ||
f93fca70 JB |
2422 | IS_BIG_ENDIAN is nonzero if the data is stored in big endian mode, |
2423 | zero otherwise. | |
14f9c5c9 | 2424 | |
f93fca70 | 2425 | IS_SIGNED_TYPE is nonzero if the data corresponds to a signed type. |
a1c95e6b | 2426 | |
f93fca70 JB |
2427 | IS_SCALAR is nonzero if the data corresponds to a signed type. */ |
2428 | ||
2429 | static void | |
2430 | ada_unpack_from_contents (const gdb_byte *src, int bit_offset, int bit_size, | |
2431 | gdb_byte *unpacked, int unpacked_len, | |
2432 | int is_big_endian, int is_signed_type, | |
2433 | int is_scalar) | |
2434 | { | |
a1c95e6b JB |
2435 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
2436 | int src_idx; /* Index into the source area */ | |
2437 | int src_bytes_left; /* Number of source bytes left to process. */ | |
2438 | int srcBitsLeft; /* Number of source bits left to move */ | |
2439 | int unusedLS; /* Number of bits in next significant | |
2440 | byte of source that are unused */ | |
2441 | ||
a1c95e6b JB |
2442 | int unpacked_idx; /* Index into the unpacked buffer */ |
2443 | int unpacked_bytes_left; /* Number of bytes left to set in unpacked. */ | |
2444 | ||
4c4b4cd2 | 2445 | unsigned long accum; /* Staging area for bits being transferred */ |
a1c95e6b | 2446 | int accumSize; /* Number of meaningful bits in accum */ |
14f9c5c9 | 2447 | unsigned char sign; |
a1c95e6b | 2448 | |
4c4b4cd2 PH |
2449 | /* Transmit bytes from least to most significant; delta is the direction |
2450 | the indices move. */ | |
f93fca70 | 2451 | int delta = is_big_endian ? -1 : 1; |
14f9c5c9 | 2452 | |
5b639dea JB |
2453 | /* Make sure that unpacked is large enough to receive the BIT_SIZE |
2454 | bits from SRC. .*/ | |
2455 | if ((bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT > unpacked_len) | |
2456 | error (_("Cannot unpack %d bits into buffer of %d bytes"), | |
2457 | bit_size, unpacked_len); | |
2458 | ||
14f9c5c9 | 2459 | srcBitsLeft = bit_size; |
086ca51f | 2460 | src_bytes_left = src_len; |
f93fca70 | 2461 | unpacked_bytes_left = unpacked_len; |
14f9c5c9 | 2462 | sign = 0; |
f93fca70 JB |
2463 | |
2464 | if (is_big_endian) | |
14f9c5c9 | 2465 | { |
086ca51f | 2466 | src_idx = src_len - 1; |
f93fca70 JB |
2467 | if (is_signed_type |
2468 | && ((src[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2469 | sign = ~0; |
d2e4a39e AS |
2470 | |
2471 | unusedLS = | |
4c4b4cd2 PH |
2472 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2473 | % HOST_CHAR_BIT; | |
14f9c5c9 | 2474 | |
f93fca70 JB |
2475 | if (is_scalar) |
2476 | { | |
2477 | accumSize = 0; | |
2478 | unpacked_idx = unpacked_len - 1; | |
2479 | } | |
2480 | else | |
2481 | { | |
4c4b4cd2 PH |
2482 | /* Non-scalar values must be aligned at a byte boundary... */ |
2483 | accumSize = | |
2484 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2485 | /* ... And are placed at the beginning (most-significant) bytes | |
2486 | of the target. */ | |
086ca51f JB |
2487 | unpacked_idx = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
2488 | unpacked_bytes_left = unpacked_idx + 1; | |
f93fca70 | 2489 | } |
14f9c5c9 | 2490 | } |
d2e4a39e | 2491 | else |
14f9c5c9 AS |
2492 | { |
2493 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2494 | ||
086ca51f | 2495 | src_idx = unpacked_idx = 0; |
14f9c5c9 AS |
2496 | unusedLS = bit_offset; |
2497 | accumSize = 0; | |
2498 | ||
f93fca70 | 2499 | if (is_signed_type && (src[src_len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2500 | sign = ~0; |
14f9c5c9 | 2501 | } |
d2e4a39e | 2502 | |
14f9c5c9 | 2503 | accum = 0; |
086ca51f | 2504 | while (src_bytes_left > 0) |
14f9c5c9 AS |
2505 | { |
2506 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2507 | part of the value. */ |
d2e4a39e | 2508 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2509 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2510 | 1; | |
2511 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2512 | unsigned int signMask = sign & ~unusedMSMask; |
5b4ee69b | 2513 | |
d2e4a39e | 2514 | accum |= |
086ca51f | 2515 | (((src[src_idx] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2516 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2517 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 | 2518 | { |
db297a65 | 2519 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
4c4b4cd2 PH |
2520 | accumSize -= HOST_CHAR_BIT; |
2521 | accum >>= HOST_CHAR_BIT; | |
086ca51f JB |
2522 | unpacked_bytes_left -= 1; |
2523 | unpacked_idx += delta; | |
4c4b4cd2 | 2524 | } |
14f9c5c9 AS |
2525 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2526 | unusedLS = 0; | |
086ca51f JB |
2527 | src_bytes_left -= 1; |
2528 | src_idx += delta; | |
14f9c5c9 | 2529 | } |
086ca51f | 2530 | while (unpacked_bytes_left > 0) |
14f9c5c9 AS |
2531 | { |
2532 | accum |= sign << accumSize; | |
db297a65 | 2533 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
14f9c5c9 | 2534 | accumSize -= HOST_CHAR_BIT; |
9cd4d857 JB |
2535 | if (accumSize < 0) |
2536 | accumSize = 0; | |
14f9c5c9 | 2537 | accum >>= HOST_CHAR_BIT; |
086ca51f JB |
2538 | unpacked_bytes_left -= 1; |
2539 | unpacked_idx += delta; | |
14f9c5c9 | 2540 | } |
f93fca70 JB |
2541 | } |
2542 | ||
2543 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2544 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2545 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
2546 | assigning through the result will set the field fetched from. | |
2547 | VALADDR is ignored unless OBJ is NULL, in which case, | |
2548 | VALADDR+OFFSET must address the start of storage containing the | |
2549 | packed value. The value returned in this case is never an lval. | |
2550 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
2551 | ||
2552 | struct value * | |
2553 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, | |
2554 | long offset, int bit_offset, int bit_size, | |
2555 | struct type *type) | |
2556 | { | |
2557 | struct value *v; | |
bfb1c796 | 2558 | const gdb_byte *src; /* First byte containing data to unpack */ |
f93fca70 | 2559 | gdb_byte *unpacked; |
220475ed | 2560 | const int is_scalar = is_scalar_type (type); |
d0a9e810 | 2561 | const int is_big_endian = gdbarch_bits_big_endian (get_type_arch (type)); |
d5722aa2 | 2562 | gdb::byte_vector staging; |
f93fca70 JB |
2563 | |
2564 | type = ada_check_typedef (type); | |
2565 | ||
d0a9e810 | 2566 | if (obj == NULL) |
bfb1c796 | 2567 | src = valaddr + offset; |
d0a9e810 | 2568 | else |
bfb1c796 | 2569 | src = value_contents (obj) + offset; |
d0a9e810 JB |
2570 | |
2571 | if (is_dynamic_type (type)) | |
2572 | { | |
2573 | /* The length of TYPE might by dynamic, so we need to resolve | |
2574 | TYPE in order to know its actual size, which we then use | |
2575 | to create the contents buffer of the value we return. | |
2576 | The difficulty is that the data containing our object is | |
2577 | packed, and therefore maybe not at a byte boundary. So, what | |
2578 | we do, is unpack the data into a byte-aligned buffer, and then | |
2579 | use that buffer as our object's value for resolving the type. */ | |
d5722aa2 PA |
2580 | int staging_len = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
2581 | staging.resize (staging_len); | |
d0a9e810 JB |
2582 | |
2583 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
d5722aa2 | 2584 | staging.data (), staging.size (), |
d0a9e810 JB |
2585 | is_big_endian, has_negatives (type), |
2586 | is_scalar); | |
d5722aa2 | 2587 | type = resolve_dynamic_type (type, staging.data (), 0); |
0cafa88c JB |
2588 | if (TYPE_LENGTH (type) < (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT) |
2589 | { | |
2590 | /* This happens when the length of the object is dynamic, | |
2591 | and is actually smaller than the space reserved for it. | |
2592 | For instance, in an array of variant records, the bit_size | |
2593 | we're given is the array stride, which is constant and | |
2594 | normally equal to the maximum size of its element. | |
2595 | But, in reality, each element only actually spans a portion | |
2596 | of that stride. */ | |
2597 | bit_size = TYPE_LENGTH (type) * HOST_CHAR_BIT; | |
2598 | } | |
d0a9e810 JB |
2599 | } |
2600 | ||
f93fca70 JB |
2601 | if (obj == NULL) |
2602 | { | |
2603 | v = allocate_value (type); | |
bfb1c796 | 2604 | src = valaddr + offset; |
f93fca70 JB |
2605 | } |
2606 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) | |
2607 | { | |
0cafa88c | 2608 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
bfb1c796 | 2609 | gdb_byte *buf; |
0cafa88c | 2610 | |
f93fca70 | 2611 | v = value_at (type, value_address (obj) + offset); |
bfb1c796 PA |
2612 | buf = (gdb_byte *) alloca (src_len); |
2613 | read_memory (value_address (v), buf, src_len); | |
2614 | src = buf; | |
f93fca70 JB |
2615 | } |
2616 | else | |
2617 | { | |
2618 | v = allocate_value (type); | |
bfb1c796 | 2619 | src = value_contents (obj) + offset; |
f93fca70 JB |
2620 | } |
2621 | ||
2622 | if (obj != NULL) | |
2623 | { | |
2624 | long new_offset = offset; | |
2625 | ||
2626 | set_value_component_location (v, obj); | |
2627 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); | |
2628 | set_value_bitsize (v, bit_size); | |
2629 | if (value_bitpos (v) >= HOST_CHAR_BIT) | |
2630 | { | |
2631 | ++new_offset; | |
2632 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); | |
2633 | } | |
2634 | set_value_offset (v, new_offset); | |
2635 | ||
2636 | /* Also set the parent value. This is needed when trying to | |
2637 | assign a new value (in inferior memory). */ | |
2638 | set_value_parent (v, obj); | |
2639 | } | |
2640 | else | |
2641 | set_value_bitsize (v, bit_size); | |
bfb1c796 | 2642 | unpacked = value_contents_writeable (v); |
f93fca70 JB |
2643 | |
2644 | if (bit_size == 0) | |
2645 | { | |
2646 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2647 | return v; | |
2648 | } | |
2649 | ||
d5722aa2 | 2650 | if (staging.size () == TYPE_LENGTH (type)) |
f93fca70 | 2651 | { |
d0a9e810 JB |
2652 | /* Small short-cut: If we've unpacked the data into a buffer |
2653 | of the same size as TYPE's length, then we can reuse that, | |
2654 | instead of doing the unpacking again. */ | |
d5722aa2 | 2655 | memcpy (unpacked, staging.data (), staging.size ()); |
f93fca70 | 2656 | } |
d0a9e810 JB |
2657 | else |
2658 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
2659 | unpacked, TYPE_LENGTH (type), | |
2660 | is_big_endian, has_negatives (type), is_scalar); | |
f93fca70 | 2661 | |
14f9c5c9 AS |
2662 | return v; |
2663 | } | |
d2e4a39e | 2664 | |
14f9c5c9 AS |
2665 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2666 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2667 | not overlap. */ |
14f9c5c9 | 2668 | static void |
fc1a4b47 | 2669 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
50810684 | 2670 | int src_offset, int n, int bits_big_endian_p) |
14f9c5c9 AS |
2671 | { |
2672 | unsigned int accum, mask; | |
2673 | int accum_bits, chunk_size; | |
2674 | ||
2675 | target += targ_offset / HOST_CHAR_BIT; | |
2676 | targ_offset %= HOST_CHAR_BIT; | |
2677 | source += src_offset / HOST_CHAR_BIT; | |
2678 | src_offset %= HOST_CHAR_BIT; | |
50810684 | 2679 | if (bits_big_endian_p) |
14f9c5c9 AS |
2680 | { |
2681 | accum = (unsigned char) *source; | |
2682 | source += 1; | |
2683 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2684 | ||
d2e4a39e | 2685 | while (n > 0) |
4c4b4cd2 PH |
2686 | { |
2687 | int unused_right; | |
5b4ee69b | 2688 | |
4c4b4cd2 PH |
2689 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; |
2690 | accum_bits += HOST_CHAR_BIT; | |
2691 | source += 1; | |
2692 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2693 | if (chunk_size > n) | |
2694 | chunk_size = n; | |
2695 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2696 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2697 | *target = | |
2698 | (*target & ~mask) | |
2699 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2700 | n -= chunk_size; | |
2701 | accum_bits -= chunk_size; | |
2702 | target += 1; | |
2703 | targ_offset = 0; | |
2704 | } | |
14f9c5c9 AS |
2705 | } |
2706 | else | |
2707 | { | |
2708 | accum = (unsigned char) *source >> src_offset; | |
2709 | source += 1; | |
2710 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2711 | ||
d2e4a39e | 2712 | while (n > 0) |
4c4b4cd2 PH |
2713 | { |
2714 | accum = accum + ((unsigned char) *source << accum_bits); | |
2715 | accum_bits += HOST_CHAR_BIT; | |
2716 | source += 1; | |
2717 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2718 | if (chunk_size > n) | |
2719 | chunk_size = n; | |
2720 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2721 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2722 | n -= chunk_size; | |
2723 | accum_bits -= chunk_size; | |
2724 | accum >>= chunk_size; | |
2725 | target += 1; | |
2726 | targ_offset = 0; | |
2727 | } | |
14f9c5c9 AS |
2728 | } |
2729 | } | |
2730 | ||
14f9c5c9 AS |
2731 | /* Store the contents of FROMVAL into the location of TOVAL. |
2732 | Return a new value with the location of TOVAL and contents of | |
2733 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2734 | floating-point or non-scalar types. */ |
14f9c5c9 | 2735 | |
d2e4a39e AS |
2736 | static struct value * |
2737 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2738 | { |
df407dfe AC |
2739 | struct type *type = value_type (toval); |
2740 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2741 | |
52ce6436 PH |
2742 | toval = ada_coerce_ref (toval); |
2743 | fromval = ada_coerce_ref (fromval); | |
2744 | ||
2745 | if (ada_is_direct_array_type (value_type (toval))) | |
2746 | toval = ada_coerce_to_simple_array (toval); | |
2747 | if (ada_is_direct_array_type (value_type (fromval))) | |
2748 | fromval = ada_coerce_to_simple_array (fromval); | |
2749 | ||
88e3b34b | 2750 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2751 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2752 | |
d2e4a39e | 2753 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2754 | && bits > 0 |
d2e4a39e | 2755 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2756 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2757 | { |
df407dfe AC |
2758 | int len = (value_bitpos (toval) |
2759 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2760 | int from_size; |
224c3ddb | 2761 | gdb_byte *buffer = (gdb_byte *) alloca (len); |
d2e4a39e | 2762 | struct value *val; |
42ae5230 | 2763 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 AS |
2764 | |
2765 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2766 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2767 | |
52ce6436 | 2768 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2769 | from_size = value_bitsize (fromval); |
2770 | if (from_size == 0) | |
2771 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
50810684 | 2772 | if (gdbarch_bits_big_endian (get_type_arch (type))) |
df407dfe | 2773 | move_bits (buffer, value_bitpos (toval), |
50810684 | 2774 | value_contents (fromval), from_size - bits, bits, 1); |
14f9c5c9 | 2775 | else |
50810684 UW |
2776 | move_bits (buffer, value_bitpos (toval), |
2777 | value_contents (fromval), 0, bits, 0); | |
972daa01 | 2778 | write_memory_with_notification (to_addr, buffer, len); |
8cebebb9 | 2779 | |
14f9c5c9 | 2780 | val = value_copy (toval); |
0fd88904 | 2781 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2782 | TYPE_LENGTH (type)); |
04624583 | 2783 | deprecated_set_value_type (val, type); |
d2e4a39e | 2784 | |
14f9c5c9 AS |
2785 | return val; |
2786 | } | |
2787 | ||
2788 | return value_assign (toval, fromval); | |
2789 | } | |
2790 | ||
2791 | ||
7c512744 JB |
2792 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2793 | CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2794 | CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2795 | COMPONENT, and not the inferior's memory. The current contents | |
2796 | of COMPONENT are ignored. | |
2797 | ||
2798 | Although not part of the initial design, this function also works | |
2799 | when CONTAINER and COMPONENT are not_lval's: it works as if CONTAINER | |
2800 | had a null address, and COMPONENT had an address which is equal to | |
2801 | its offset inside CONTAINER. */ | |
2802 | ||
52ce6436 PH |
2803 | static void |
2804 | value_assign_to_component (struct value *container, struct value *component, | |
2805 | struct value *val) | |
2806 | { | |
2807 | LONGEST offset_in_container = | |
42ae5230 | 2808 | (LONGEST) (value_address (component) - value_address (container)); |
7c512744 | 2809 | int bit_offset_in_container = |
52ce6436 PH |
2810 | value_bitpos (component) - value_bitpos (container); |
2811 | int bits; | |
7c512744 | 2812 | |
52ce6436 PH |
2813 | val = value_cast (value_type (component), val); |
2814 | ||
2815 | if (value_bitsize (component) == 0) | |
2816 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2817 | else | |
2818 | bits = value_bitsize (component); | |
2819 | ||
50810684 | 2820 | if (gdbarch_bits_big_endian (get_type_arch (value_type (container)))) |
7c512744 | 2821 | move_bits (value_contents_writeable (container) + offset_in_container, |
52ce6436 PH |
2822 | value_bitpos (container) + bit_offset_in_container, |
2823 | value_contents (val), | |
2824 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
50810684 | 2825 | bits, 1); |
52ce6436 | 2826 | else |
7c512744 | 2827 | move_bits (value_contents_writeable (container) + offset_in_container, |
52ce6436 | 2828 | value_bitpos (container) + bit_offset_in_container, |
50810684 | 2829 | value_contents (val), 0, bits, 0); |
7c512744 JB |
2830 | } |
2831 | ||
4c4b4cd2 PH |
2832 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2833 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2834 | thereto. */ |
2835 | ||
d2e4a39e AS |
2836 | struct value * |
2837 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2838 | { |
2839 | int k; | |
d2e4a39e AS |
2840 | struct value *elt; |
2841 | struct type *elt_type; | |
14f9c5c9 AS |
2842 | |
2843 | elt = ada_coerce_to_simple_array (arr); | |
2844 | ||
df407dfe | 2845 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2846 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2847 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2848 | return value_subscript_packed (elt, arity, ind); | |
2849 | ||
2850 | for (k = 0; k < arity; k += 1) | |
2851 | { | |
2852 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2853 | error (_("too many subscripts (%d expected)"), k); |
2497b498 | 2854 | elt = value_subscript (elt, pos_atr (ind[k])); |
14f9c5c9 AS |
2855 | } |
2856 | return elt; | |
2857 | } | |
2858 | ||
deede10c JB |
2859 | /* Assuming ARR is a pointer to a GDB array, the value of the element |
2860 | of *ARR at the ARITY indices given in IND. | |
919e6dbe PMR |
2861 | Does not read the entire array into memory. |
2862 | ||
2863 | Note: Unlike what one would expect, this function is used instead of | |
2864 | ada_value_subscript for basically all non-packed array types. The reason | |
2865 | for this is that a side effect of doing our own pointer arithmetics instead | |
2866 | of relying on value_subscript is that there is no implicit typedef peeling. | |
2867 | This is important for arrays of array accesses, where it allows us to | |
2868 | preserve the fact that the array's element is an array access, where the | |
2869 | access part os encoded in a typedef layer. */ | |
14f9c5c9 | 2870 | |
2c0b251b | 2871 | static struct value * |
deede10c | 2872 | ada_value_ptr_subscript (struct value *arr, int arity, struct value **ind) |
14f9c5c9 AS |
2873 | { |
2874 | int k; | |
919e6dbe | 2875 | struct value *array_ind = ada_value_ind (arr); |
deede10c | 2876 | struct type *type |
919e6dbe PMR |
2877 | = check_typedef (value_enclosing_type (array_ind)); |
2878 | ||
2879 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
2880 | && TYPE_FIELD_BITSIZE (type, 0) > 0) | |
2881 | return value_subscript_packed (array_ind, arity, ind); | |
14f9c5c9 AS |
2882 | |
2883 | for (k = 0; k < arity; k += 1) | |
2884 | { | |
2885 | LONGEST lwb, upb; | |
aa715135 | 2886 | struct value *lwb_value; |
14f9c5c9 AS |
2887 | |
2888 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2889 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2890 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2891 | value_copy (arr)); |
14f9c5c9 | 2892 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
aa715135 JG |
2893 | lwb_value = value_from_longest (value_type(ind[k]), lwb); |
2894 | arr = value_ptradd (arr, pos_atr (ind[k]) - pos_atr (lwb_value)); | |
14f9c5c9 AS |
2895 | type = TYPE_TARGET_TYPE (type); |
2896 | } | |
2897 | ||
2898 | return value_ind (arr); | |
2899 | } | |
2900 | ||
0b5d8877 | 2901 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
aa715135 JG |
2902 | actual type of ARRAY_PTR is ignored), returns the Ada slice of |
2903 | HIGH'Pos-LOW'Pos+1 elements starting at index LOW. The lower bound of | |
2904 | this array is LOW, as per Ada rules. */ | |
0b5d8877 | 2905 | static struct value * |
f5938064 JG |
2906 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
2907 | int low, int high) | |
0b5d8877 | 2908 | { |
b0dd7688 | 2909 | struct type *type0 = ada_check_typedef (type); |
aa715135 | 2910 | struct type *base_index_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type0)); |
0c9c3474 | 2911 | struct type *index_type |
aa715135 | 2912 | = create_static_range_type (NULL, base_index_type, low, high); |
9fe561ab JB |
2913 | struct type *slice_type = create_array_type_with_stride |
2914 | (NULL, TYPE_TARGET_TYPE (type0), index_type, | |
2915 | get_dyn_prop (DYN_PROP_BYTE_STRIDE, type0), | |
2916 | TYPE_FIELD_BITSIZE (type0, 0)); | |
aa715135 JG |
2917 | int base_low = ada_discrete_type_low_bound (TYPE_INDEX_TYPE (type0)); |
2918 | LONGEST base_low_pos, low_pos; | |
2919 | CORE_ADDR base; | |
2920 | ||
2921 | if (!discrete_position (base_index_type, low, &low_pos) | |
2922 | || !discrete_position (base_index_type, base_low, &base_low_pos)) | |
2923 | { | |
2924 | warning (_("unable to get positions in slice, use bounds instead")); | |
2925 | low_pos = low; | |
2926 | base_low_pos = base_low; | |
2927 | } | |
5b4ee69b | 2928 | |
aa715135 JG |
2929 | base = value_as_address (array_ptr) |
2930 | + ((low_pos - base_low_pos) | |
2931 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type0))); | |
f5938064 | 2932 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
2933 | } |
2934 | ||
2935 | ||
2936 | static struct value * | |
2937 | ada_value_slice (struct value *array, int low, int high) | |
2938 | { | |
b0dd7688 | 2939 | struct type *type = ada_check_typedef (value_type (array)); |
aa715135 | 2940 | struct type *base_index_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
0c9c3474 SA |
2941 | struct type *index_type |
2942 | = create_static_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); | |
9fe561ab JB |
2943 | struct type *slice_type = create_array_type_with_stride |
2944 | (NULL, TYPE_TARGET_TYPE (type), index_type, | |
2945 | get_dyn_prop (DYN_PROP_BYTE_STRIDE, type), | |
2946 | TYPE_FIELD_BITSIZE (type, 0)); | |
aa715135 | 2947 | LONGEST low_pos, high_pos; |
5b4ee69b | 2948 | |
aa715135 JG |
2949 | if (!discrete_position (base_index_type, low, &low_pos) |
2950 | || !discrete_position (base_index_type, high, &high_pos)) | |
2951 | { | |
2952 | warning (_("unable to get positions in slice, use bounds instead")); | |
2953 | low_pos = low; | |
2954 | high_pos = high; | |
2955 | } | |
2956 | ||
2957 | return value_cast (slice_type, | |
2958 | value_slice (array, low, high_pos - low_pos + 1)); | |
0b5d8877 PH |
2959 | } |
2960 | ||
14f9c5c9 AS |
2961 | /* If type is a record type in the form of a standard GNAT array |
2962 | descriptor, returns the number of dimensions for type. If arr is a | |
2963 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2964 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2965 | |
2966 | int | |
d2e4a39e | 2967 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2968 | { |
2969 | int arity; | |
2970 | ||
2971 | if (type == NULL) | |
2972 | return 0; | |
2973 | ||
2974 | type = desc_base_type (type); | |
2975 | ||
2976 | arity = 0; | |
d2e4a39e | 2977 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2978 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2979 | else |
2980 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2981 | { |
4c4b4cd2 | 2982 | arity += 1; |
61ee279c | 2983 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2984 | } |
d2e4a39e | 2985 | |
14f9c5c9 AS |
2986 | return arity; |
2987 | } | |
2988 | ||
2989 | /* If TYPE is a record type in the form of a standard GNAT array | |
2990 | descriptor or a simple array type, returns the element type for | |
2991 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2992 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2993 | |
d2e4a39e AS |
2994 | struct type * |
2995 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2996 | { |
2997 | type = desc_base_type (type); | |
2998 | ||
d2e4a39e | 2999 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
3000 | { |
3001 | int k; | |
d2e4a39e | 3002 | struct type *p_array_type; |
14f9c5c9 | 3003 | |
556bdfd4 | 3004 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
3005 | |
3006 | k = ada_array_arity (type); | |
3007 | if (k == 0) | |
4c4b4cd2 | 3008 | return NULL; |
d2e4a39e | 3009 | |
4c4b4cd2 | 3010 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 3011 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 3012 | k = nindices; |
d2e4a39e | 3013 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 3014 | { |
61ee279c | 3015 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
3016 | k -= 1; |
3017 | } | |
14f9c5c9 AS |
3018 | return p_array_type; |
3019 | } | |
3020 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
3021 | { | |
3022 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
3023 | { |
3024 | type = TYPE_TARGET_TYPE (type); | |
3025 | nindices -= 1; | |
3026 | } | |
14f9c5c9 AS |
3027 | return type; |
3028 | } | |
3029 | ||
3030 | return NULL; | |
3031 | } | |
3032 | ||
4c4b4cd2 | 3033 | /* The type of nth index in arrays of given type (n numbering from 1). |
dd19d49e UW |
3034 | Does not examine memory. Throws an error if N is invalid or TYPE |
3035 | is not an array type. NAME is the name of the Ada attribute being | |
3036 | evaluated ('range, 'first, 'last, or 'length); it is used in building | |
3037 | the error message. */ | |
14f9c5c9 | 3038 | |
1eea4ebd UW |
3039 | static struct type * |
3040 | ada_index_type (struct type *type, int n, const char *name) | |
14f9c5c9 | 3041 | { |
4c4b4cd2 PH |
3042 | struct type *result_type; |
3043 | ||
14f9c5c9 AS |
3044 | type = desc_base_type (type); |
3045 | ||
1eea4ebd UW |
3046 | if (n < 0 || n > ada_array_arity (type)) |
3047 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 3048 | |
4c4b4cd2 | 3049 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
3050 | { |
3051 | int i; | |
3052 | ||
3053 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 | 3054 | type = TYPE_TARGET_TYPE (type); |
262452ec | 3055 | result_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
4c4b4cd2 PH |
3056 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
3057 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 | 3058 | perhaps stabsread.c would make more sense. */ |
1eea4ebd UW |
3059 | if (result_type && TYPE_CODE (result_type) == TYPE_CODE_UNDEF) |
3060 | result_type = NULL; | |
14f9c5c9 | 3061 | } |
d2e4a39e | 3062 | else |
1eea4ebd UW |
3063 | { |
3064 | result_type = desc_index_type (desc_bounds_type (type), n); | |
3065 | if (result_type == NULL) | |
3066 | error (_("attempt to take bound of something that is not an array")); | |
3067 | } | |
3068 | ||
3069 | return result_type; | |
14f9c5c9 AS |
3070 | } |
3071 | ||
3072 | /* Given that arr is an array type, returns the lower bound of the | |
3073 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 3074 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
3075 | array-descriptor type. It works for other arrays with bounds supplied |
3076 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 3077 | |
abb68b3e | 3078 | static LONGEST |
fb5e3d5c | 3079 | ada_array_bound_from_type (struct type *arr_type, int n, int which) |
14f9c5c9 | 3080 | { |
8a48ac95 | 3081 | struct type *type, *index_type_desc, *index_type; |
1ce677a4 | 3082 | int i; |
262452ec JK |
3083 | |
3084 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 | 3085 | |
ad82864c JB |
3086 | if (ada_is_constrained_packed_array_type (arr_type)) |
3087 | arr_type = decode_constrained_packed_array_type (arr_type); | |
14f9c5c9 | 3088 | |
4c4b4cd2 | 3089 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3090 | return (LONGEST) - which; |
14f9c5c9 AS |
3091 | |
3092 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
3093 | type = TYPE_TARGET_TYPE (arr_type); | |
3094 | else | |
3095 | type = arr_type; | |
3096 | ||
bafffb51 JB |
3097 | if (TYPE_FIXED_INSTANCE (type)) |
3098 | { | |
3099 | /* The array has already been fixed, so we do not need to | |
3100 | check the parallel ___XA type again. That encoding has | |
3101 | already been applied, so ignore it now. */ | |
3102 | index_type_desc = NULL; | |
3103 | } | |
3104 | else | |
3105 | { | |
3106 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
3107 | ada_fixup_array_indexes_type (index_type_desc); | |
3108 | } | |
3109 | ||
262452ec | 3110 | if (index_type_desc != NULL) |
28c85d6c JB |
3111 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, n - 1), |
3112 | NULL); | |
262452ec | 3113 | else |
8a48ac95 JB |
3114 | { |
3115 | struct type *elt_type = check_typedef (type); | |
3116 | ||
3117 | for (i = 1; i < n; i++) | |
3118 | elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
3119 | ||
3120 | index_type = TYPE_INDEX_TYPE (elt_type); | |
3121 | } | |
262452ec | 3122 | |
43bbcdc2 PH |
3123 | return |
3124 | (LONGEST) (which == 0 | |
3125 | ? ada_discrete_type_low_bound (index_type) | |
3126 | : ada_discrete_type_high_bound (index_type)); | |
14f9c5c9 AS |
3127 | } |
3128 | ||
3129 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
3130 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
3131 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 3132 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 3133 | |
1eea4ebd | 3134 | static LONGEST |
4dc81987 | 3135 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 3136 | { |
eb479039 JB |
3137 | struct type *arr_type; |
3138 | ||
3139 | if (TYPE_CODE (check_typedef (value_type (arr))) == TYPE_CODE_PTR) | |
3140 | arr = value_ind (arr); | |
3141 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3142 | |
ad82864c JB |
3143 | if (ada_is_constrained_packed_array_type (arr_type)) |
3144 | return ada_array_bound (decode_constrained_packed_array (arr), n, which); | |
4c4b4cd2 | 3145 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3146 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 3147 | else |
1eea4ebd | 3148 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
3149 | } |
3150 | ||
3151 | /* Given that arr is an array value, returns the length of the | |
3152 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
3153 | supplied by run-time quantities other than discriminants. |
3154 | Does not work for arrays indexed by enumeration types with representation | |
3155 | clauses at the moment. */ | |
14f9c5c9 | 3156 | |
1eea4ebd | 3157 | static LONGEST |
d2e4a39e | 3158 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 3159 | { |
aa715135 JG |
3160 | struct type *arr_type, *index_type; |
3161 | int low, high; | |
eb479039 JB |
3162 | |
3163 | if (TYPE_CODE (check_typedef (value_type (arr))) == TYPE_CODE_PTR) | |
3164 | arr = value_ind (arr); | |
3165 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3166 | |
ad82864c JB |
3167 | if (ada_is_constrained_packed_array_type (arr_type)) |
3168 | return ada_array_length (decode_constrained_packed_array (arr), n); | |
14f9c5c9 | 3169 | |
4c4b4cd2 | 3170 | if (ada_is_simple_array_type (arr_type)) |
aa715135 JG |
3171 | { |
3172 | low = ada_array_bound_from_type (arr_type, n, 0); | |
3173 | high = ada_array_bound_from_type (arr_type, n, 1); | |
3174 | } | |
14f9c5c9 | 3175 | else |
aa715135 JG |
3176 | { |
3177 | low = value_as_long (desc_one_bound (desc_bounds (arr), n, 0)); | |
3178 | high = value_as_long (desc_one_bound (desc_bounds (arr), n, 1)); | |
3179 | } | |
3180 | ||
f168693b | 3181 | arr_type = check_typedef (arr_type); |
7150d33c | 3182 | index_type = ada_index_type (arr_type, n, "length"); |
aa715135 JG |
3183 | if (index_type != NULL) |
3184 | { | |
3185 | struct type *base_type; | |
3186 | if (TYPE_CODE (index_type) == TYPE_CODE_RANGE) | |
3187 | base_type = TYPE_TARGET_TYPE (index_type); | |
3188 | else | |
3189 | base_type = index_type; | |
3190 | ||
3191 | low = pos_atr (value_from_longest (base_type, low)); | |
3192 | high = pos_atr (value_from_longest (base_type, high)); | |
3193 | } | |
3194 | return high - low + 1; | |
4c4b4cd2 PH |
3195 | } |
3196 | ||
3197 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
3198 | with bounds LOW to LOW-1. */ | |
3199 | ||
3200 | static struct value * | |
3201 | empty_array (struct type *arr_type, int low) | |
3202 | { | |
b0dd7688 | 3203 | struct type *arr_type0 = ada_check_typedef (arr_type); |
0c9c3474 SA |
3204 | struct type *index_type |
3205 | = create_static_range_type | |
3206 | (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type0)), low, low - 1); | |
b0dd7688 | 3207 | struct type *elt_type = ada_array_element_type (arr_type0, 1); |
5b4ee69b | 3208 | |
0b5d8877 | 3209 | return allocate_value (create_array_type (NULL, elt_type, index_type)); |
14f9c5c9 | 3210 | } |
14f9c5c9 | 3211 | \f |
d2e4a39e | 3212 | |
4c4b4cd2 | 3213 | /* Name resolution */ |
14f9c5c9 | 3214 | |
4c4b4cd2 PH |
3215 | /* The "decoded" name for the user-definable Ada operator corresponding |
3216 | to OP. */ | |
14f9c5c9 | 3217 | |
d2e4a39e | 3218 | static const char * |
4c4b4cd2 | 3219 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
3220 | { |
3221 | int i; | |
3222 | ||
4c4b4cd2 | 3223 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
3224 | { |
3225 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 3226 | return ada_opname_table[i].decoded; |
14f9c5c9 | 3227 | } |
323e0a4a | 3228 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
3229 | } |
3230 | ||
3231 | ||
4c4b4cd2 PH |
3232 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
3233 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
3234 | undefined namespace) and converts operators that are | |
3235 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
3236 | non-null, it provides a preferred result type [at the moment, only |
3237 | type void has any effect---causing procedures to be preferred over | |
3238 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 3239 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 3240 | |
4c4b4cd2 | 3241 | static void |
e9d9f57e | 3242 | resolve (expression_up *expp, int void_context_p) |
14f9c5c9 | 3243 | { |
30b15541 UW |
3244 | struct type *context_type = NULL; |
3245 | int pc = 0; | |
3246 | ||
3247 | if (void_context_p) | |
3248 | context_type = builtin_type ((*expp)->gdbarch)->builtin_void; | |
3249 | ||
3250 | resolve_subexp (expp, &pc, 1, context_type); | |
14f9c5c9 AS |
3251 | } |
3252 | ||
4c4b4cd2 PH |
3253 | /* Resolve the operator of the subexpression beginning at |
3254 | position *POS of *EXPP. "Resolving" consists of replacing | |
3255 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
3256 | with their resolutions, replacing built-in operators with | |
3257 | function calls to user-defined operators, where appropriate, and, | |
3258 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
3259 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
3260 | are as in ada_resolve, above. */ | |
14f9c5c9 | 3261 | |
d2e4a39e | 3262 | static struct value * |
e9d9f57e | 3263 | resolve_subexp (expression_up *expp, int *pos, int deprocedure_p, |
76a01679 | 3264 | struct type *context_type) |
14f9c5c9 AS |
3265 | { |
3266 | int pc = *pos; | |
3267 | int i; | |
4c4b4cd2 | 3268 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 3269 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
3270 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
3271 | int nargs; /* Number of operands. */ | |
52ce6436 | 3272 | int oplen; |
ec6a20c2 | 3273 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
14f9c5c9 AS |
3274 | |
3275 | argvec = NULL; | |
3276 | nargs = 0; | |
e9d9f57e | 3277 | exp = expp->get (); |
14f9c5c9 | 3278 | |
52ce6436 PH |
3279 | /* Pass one: resolve operands, saving their types and updating *pos, |
3280 | if needed. */ | |
14f9c5c9 AS |
3281 | switch (op) |
3282 | { | |
4c4b4cd2 PH |
3283 | case OP_FUNCALL: |
3284 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
3285 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
3286 | *pos += 7; | |
4c4b4cd2 PH |
3287 | else |
3288 | { | |
3289 | *pos += 3; | |
3290 | resolve_subexp (expp, pos, 0, NULL); | |
3291 | } | |
3292 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
3293 | break; |
3294 | ||
14f9c5c9 | 3295 | case UNOP_ADDR: |
4c4b4cd2 PH |
3296 | *pos += 1; |
3297 | resolve_subexp (expp, pos, 0, NULL); | |
3298 | break; | |
3299 | ||
52ce6436 PH |
3300 | case UNOP_QUAL: |
3301 | *pos += 3; | |
17466c1a | 3302 | resolve_subexp (expp, pos, 1, check_typedef (exp->elts[pc + 1].type)); |
4c4b4cd2 PH |
3303 | break; |
3304 | ||
52ce6436 | 3305 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
3306 | case OP_ATR_SIZE: |
3307 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
3308 | case OP_ATR_FIRST: |
3309 | case OP_ATR_LAST: | |
3310 | case OP_ATR_LENGTH: | |
3311 | case OP_ATR_POS: | |
3312 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
3313 | case OP_ATR_MIN: |
3314 | case OP_ATR_MAX: | |
52ce6436 PH |
3315 | case TERNOP_IN_RANGE: |
3316 | case BINOP_IN_BOUNDS: | |
3317 | case UNOP_IN_RANGE: | |
3318 | case OP_AGGREGATE: | |
3319 | case OP_OTHERS: | |
3320 | case OP_CHOICES: | |
3321 | case OP_POSITIONAL: | |
3322 | case OP_DISCRETE_RANGE: | |
3323 | case OP_NAME: | |
3324 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
3325 | *pos += oplen; | |
14f9c5c9 AS |
3326 | break; |
3327 | ||
3328 | case BINOP_ASSIGN: | |
3329 | { | |
4c4b4cd2 PH |
3330 | struct value *arg1; |
3331 | ||
3332 | *pos += 1; | |
3333 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
3334 | if (arg1 == NULL) | |
3335 | resolve_subexp (expp, pos, 1, NULL); | |
3336 | else | |
df407dfe | 3337 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 3338 | break; |
14f9c5c9 AS |
3339 | } |
3340 | ||
4c4b4cd2 | 3341 | case UNOP_CAST: |
4c4b4cd2 PH |
3342 | *pos += 3; |
3343 | nargs = 1; | |
3344 | break; | |
14f9c5c9 | 3345 | |
4c4b4cd2 PH |
3346 | case BINOP_ADD: |
3347 | case BINOP_SUB: | |
3348 | case BINOP_MUL: | |
3349 | case BINOP_DIV: | |
3350 | case BINOP_REM: | |
3351 | case BINOP_MOD: | |
3352 | case BINOP_EXP: | |
3353 | case BINOP_CONCAT: | |
3354 | case BINOP_LOGICAL_AND: | |
3355 | case BINOP_LOGICAL_OR: | |
3356 | case BINOP_BITWISE_AND: | |
3357 | case BINOP_BITWISE_IOR: | |
3358 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 3359 | |
4c4b4cd2 PH |
3360 | case BINOP_EQUAL: |
3361 | case BINOP_NOTEQUAL: | |
3362 | case BINOP_LESS: | |
3363 | case BINOP_GTR: | |
3364 | case BINOP_LEQ: | |
3365 | case BINOP_GEQ: | |
14f9c5c9 | 3366 | |
4c4b4cd2 PH |
3367 | case BINOP_REPEAT: |
3368 | case BINOP_SUBSCRIPT: | |
3369 | case BINOP_COMMA: | |
40c8aaa9 JB |
3370 | *pos += 1; |
3371 | nargs = 2; | |
3372 | break; | |
14f9c5c9 | 3373 | |
4c4b4cd2 PH |
3374 | case UNOP_NEG: |
3375 | case UNOP_PLUS: | |
3376 | case UNOP_LOGICAL_NOT: | |
3377 | case UNOP_ABS: | |
3378 | case UNOP_IND: | |
3379 | *pos += 1; | |
3380 | nargs = 1; | |
3381 | break; | |
14f9c5c9 | 3382 | |
4c4b4cd2 | 3383 | case OP_LONG: |
edd079d9 | 3384 | case OP_FLOAT: |
4c4b4cd2 | 3385 | case OP_VAR_VALUE: |
74ea4be4 | 3386 | case OP_VAR_MSYM_VALUE: |
4c4b4cd2 PH |
3387 | *pos += 4; |
3388 | break; | |
14f9c5c9 | 3389 | |
4c4b4cd2 PH |
3390 | case OP_TYPE: |
3391 | case OP_BOOL: | |
3392 | case OP_LAST: | |
4c4b4cd2 PH |
3393 | case OP_INTERNALVAR: |
3394 | *pos += 3; | |
3395 | break; | |
14f9c5c9 | 3396 | |
4c4b4cd2 PH |
3397 | case UNOP_MEMVAL: |
3398 | *pos += 3; | |
3399 | nargs = 1; | |
3400 | break; | |
3401 | ||
67f3407f DJ |
3402 | case OP_REGISTER: |
3403 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3404 | break; | |
3405 | ||
4c4b4cd2 PH |
3406 | case STRUCTOP_STRUCT: |
3407 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3408 | nargs = 1; | |
3409 | break; | |
3410 | ||
4c4b4cd2 | 3411 | case TERNOP_SLICE: |
4c4b4cd2 PH |
3412 | *pos += 1; |
3413 | nargs = 3; | |
3414 | break; | |
3415 | ||
52ce6436 | 3416 | case OP_STRING: |
14f9c5c9 | 3417 | break; |
4c4b4cd2 PH |
3418 | |
3419 | default: | |
323e0a4a | 3420 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
3421 | } |
3422 | ||
8d749320 | 3423 | argvec = XALLOCAVEC (struct value *, nargs + 1); |
4c4b4cd2 PH |
3424 | for (i = 0; i < nargs; i += 1) |
3425 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
3426 | argvec[i] = NULL; | |
e9d9f57e | 3427 | exp = expp->get (); |
4c4b4cd2 PH |
3428 | |
3429 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
3430 | switch (op) |
3431 | { | |
3432 | default: | |
3433 | break; | |
3434 | ||
14f9c5c9 | 3435 | case OP_VAR_VALUE: |
4c4b4cd2 | 3436 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 | 3437 | { |
d12307c1 | 3438 | struct block_symbol *candidates; |
76a01679 JB |
3439 | int n_candidates; |
3440 | ||
3441 | n_candidates = | |
3442 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
3443 | (exp->elts[pc + 2].symbol), | |
3444 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
4eeaa230 | 3445 | &candidates); |
ec6a20c2 | 3446 | make_cleanup (xfree, candidates); |
76a01679 JB |
3447 | |
3448 | if (n_candidates > 1) | |
3449 | { | |
3450 | /* Types tend to get re-introduced locally, so if there | |
3451 | are any local symbols that are not types, first filter | |
3452 | out all types. */ | |
3453 | int j; | |
3454 | for (j = 0; j < n_candidates; j += 1) | |
d12307c1 | 3455 | switch (SYMBOL_CLASS (candidates[j].symbol)) |
76a01679 JB |
3456 | { |
3457 | case LOC_REGISTER: | |
3458 | case LOC_ARG: | |
3459 | case LOC_REF_ARG: | |
76a01679 JB |
3460 | case LOC_REGPARM_ADDR: |
3461 | case LOC_LOCAL: | |
76a01679 | 3462 | case LOC_COMPUTED: |
76a01679 JB |
3463 | goto FoundNonType; |
3464 | default: | |
3465 | break; | |
3466 | } | |
3467 | FoundNonType: | |
3468 | if (j < n_candidates) | |
3469 | { | |
3470 | j = 0; | |
3471 | while (j < n_candidates) | |
3472 | { | |
d12307c1 | 3473 | if (SYMBOL_CLASS (candidates[j].symbol) == LOC_TYPEDEF) |
76a01679 JB |
3474 | { |
3475 | candidates[j] = candidates[n_candidates - 1]; | |
3476 | n_candidates -= 1; | |
3477 | } | |
3478 | else | |
3479 | j += 1; | |
3480 | } | |
3481 | } | |
3482 | } | |
3483 | ||
3484 | if (n_candidates == 0) | |
323e0a4a | 3485 | error (_("No definition found for %s"), |
76a01679 JB |
3486 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3487 | else if (n_candidates == 1) | |
3488 | i = 0; | |
3489 | else if (deprocedure_p | |
3490 | && !is_nonfunction (candidates, n_candidates)) | |
3491 | { | |
06d5cf63 JB |
3492 | i = ada_resolve_function |
3493 | (candidates, n_candidates, NULL, 0, | |
3494 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
3495 | context_type); | |
76a01679 | 3496 | if (i < 0) |
323e0a4a | 3497 | error (_("Could not find a match for %s"), |
76a01679 JB |
3498 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3499 | } | |
3500 | else | |
3501 | { | |
323e0a4a | 3502 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
3503 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3504 | user_select_syms (candidates, n_candidates, 1); | |
3505 | i = 0; | |
3506 | } | |
3507 | ||
3508 | exp->elts[pc + 1].block = candidates[i].block; | |
d12307c1 | 3509 | exp->elts[pc + 2].symbol = candidates[i].symbol; |
aee1fcdf | 3510 | innermost_block.update (candidates[i]); |
76a01679 JB |
3511 | } |
3512 | ||
3513 | if (deprocedure_p | |
3514 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
3515 | == TYPE_CODE_FUNC)) | |
3516 | { | |
3517 | replace_operator_with_call (expp, pc, 0, 0, | |
3518 | exp->elts[pc + 2].symbol, | |
3519 | exp->elts[pc + 1].block); | |
e9d9f57e | 3520 | exp = expp->get (); |
76a01679 | 3521 | } |
14f9c5c9 AS |
3522 | break; |
3523 | ||
3524 | case OP_FUNCALL: | |
3525 | { | |
4c4b4cd2 | 3526 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 3527 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 | 3528 | { |
d12307c1 | 3529 | struct block_symbol *candidates; |
4c4b4cd2 PH |
3530 | int n_candidates; |
3531 | ||
3532 | n_candidates = | |
76a01679 JB |
3533 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
3534 | (exp->elts[pc + 5].symbol), | |
3535 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
4eeaa230 | 3536 | &candidates); |
ec6a20c2 JB |
3537 | make_cleanup (xfree, candidates); |
3538 | ||
4c4b4cd2 PH |
3539 | if (n_candidates == 1) |
3540 | i = 0; | |
3541 | else | |
3542 | { | |
06d5cf63 JB |
3543 | i = ada_resolve_function |
3544 | (candidates, n_candidates, | |
3545 | argvec, nargs, | |
3546 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
3547 | context_type); | |
4c4b4cd2 | 3548 | if (i < 0) |
323e0a4a | 3549 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
3550 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
3551 | } | |
3552 | ||
3553 | exp->elts[pc + 4].block = candidates[i].block; | |
d12307c1 | 3554 | exp->elts[pc + 5].symbol = candidates[i].symbol; |
aee1fcdf | 3555 | innermost_block.update (candidates[i]); |
4c4b4cd2 | 3556 | } |
14f9c5c9 AS |
3557 | } |
3558 | break; | |
3559 | case BINOP_ADD: | |
3560 | case BINOP_SUB: | |
3561 | case BINOP_MUL: | |
3562 | case BINOP_DIV: | |
3563 | case BINOP_REM: | |
3564 | case BINOP_MOD: | |
3565 | case BINOP_CONCAT: | |
3566 | case BINOP_BITWISE_AND: | |
3567 | case BINOP_BITWISE_IOR: | |
3568 | case BINOP_BITWISE_XOR: | |
3569 | case BINOP_EQUAL: | |
3570 | case BINOP_NOTEQUAL: | |
3571 | case BINOP_LESS: | |
3572 | case BINOP_GTR: | |
3573 | case BINOP_LEQ: | |
3574 | case BINOP_GEQ: | |
3575 | case BINOP_EXP: | |
3576 | case UNOP_NEG: | |
3577 | case UNOP_PLUS: | |
3578 | case UNOP_LOGICAL_NOT: | |
3579 | case UNOP_ABS: | |
3580 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 | 3581 | { |
d12307c1 | 3582 | struct block_symbol *candidates; |
4c4b4cd2 PH |
3583 | int n_candidates; |
3584 | ||
3585 | n_candidates = | |
b5ec771e | 3586 | ada_lookup_symbol_list (ada_decoded_op_name (op), |
4c4b4cd2 | 3587 | (struct block *) NULL, VAR_DOMAIN, |
4eeaa230 | 3588 | &candidates); |
ec6a20c2 JB |
3589 | make_cleanup (xfree, candidates); |
3590 | ||
4c4b4cd2 | 3591 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, |
76a01679 | 3592 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
3593 | if (i < 0) |
3594 | break; | |
3595 | ||
d12307c1 PMR |
3596 | replace_operator_with_call (expp, pc, nargs, 1, |
3597 | candidates[i].symbol, | |
3598 | candidates[i].block); | |
e9d9f57e | 3599 | exp = expp->get (); |
4c4b4cd2 | 3600 | } |
14f9c5c9 | 3601 | break; |
4c4b4cd2 PH |
3602 | |
3603 | case OP_TYPE: | |
b3dbf008 | 3604 | case OP_REGISTER: |
ec6a20c2 | 3605 | do_cleanups (old_chain); |
4c4b4cd2 | 3606 | return NULL; |
14f9c5c9 AS |
3607 | } |
3608 | ||
3609 | *pos = pc; | |
ec6a20c2 | 3610 | do_cleanups (old_chain); |
ced9779b JB |
3611 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE) |
3612 | return evaluate_var_msym_value (EVAL_AVOID_SIDE_EFFECTS, | |
3613 | exp->elts[pc + 1].objfile, | |
3614 | exp->elts[pc + 2].msymbol); | |
3615 | else | |
3616 | return evaluate_subexp_type (exp, pos); | |
14f9c5c9 AS |
3617 | } |
3618 | ||
3619 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 | 3620 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
5b3d5b7d | 3621 | a non-pointer. */ |
14f9c5c9 | 3622 | /* The term "match" here is rather loose. The match is heuristic and |
5b3d5b7d | 3623 | liberal. */ |
14f9c5c9 AS |
3624 | |
3625 | static int | |
4dc81987 | 3626 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3627 | { |
61ee279c PH |
3628 | ftype = ada_check_typedef (ftype); |
3629 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3630 | |
3631 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3632 | ftype = TYPE_TARGET_TYPE (ftype); | |
3633 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3634 | atype = TYPE_TARGET_TYPE (atype); | |
3635 | ||
d2e4a39e | 3636 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3637 | { |
3638 | default: | |
5b3d5b7d | 3639 | return TYPE_CODE (ftype) == TYPE_CODE (atype); |
14f9c5c9 AS |
3640 | case TYPE_CODE_PTR: |
3641 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3642 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3643 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3644 | else |
1265e4aa JB |
3645 | return (may_deref |
3646 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3647 | case TYPE_CODE_INT: |
3648 | case TYPE_CODE_ENUM: | |
3649 | case TYPE_CODE_RANGE: | |
3650 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3651 | { |
3652 | case TYPE_CODE_INT: | |
3653 | case TYPE_CODE_ENUM: | |
3654 | case TYPE_CODE_RANGE: | |
3655 | return 1; | |
3656 | default: | |
3657 | return 0; | |
3658 | } | |
14f9c5c9 AS |
3659 | |
3660 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3661 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3662 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3663 | |
3664 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3665 | if (ada_is_array_descriptor_type (ftype)) |
3666 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3667 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3668 | else |
4c4b4cd2 PH |
3669 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3670 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3671 | |
3672 | case TYPE_CODE_UNION: | |
3673 | case TYPE_CODE_FLT: | |
3674 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3675 | } | |
3676 | } | |
3677 | ||
3678 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3679 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3680 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3681 | argument function. */ |
14f9c5c9 AS |
3682 | |
3683 | static int | |
d2e4a39e | 3684 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3685 | { |
3686 | int i; | |
d2e4a39e | 3687 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3688 | |
1265e4aa JB |
3689 | if (SYMBOL_CLASS (func) == LOC_CONST |
3690 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3691 | return (n_actuals == 0); |
3692 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3693 | return 0; | |
3694 | ||
3695 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3696 | return 0; | |
3697 | ||
3698 | for (i = 0; i < n_actuals; i += 1) | |
3699 | { | |
4c4b4cd2 | 3700 | if (actuals[i] == NULL) |
76a01679 JB |
3701 | return 0; |
3702 | else | |
3703 | { | |
5b4ee69b MS |
3704 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, |
3705 | i)); | |
df407dfe | 3706 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3707 | |
76a01679 JB |
3708 | if (!ada_type_match (ftype, atype, 1)) |
3709 | return 0; | |
3710 | } | |
14f9c5c9 AS |
3711 | } |
3712 | return 1; | |
3713 | } | |
3714 | ||
3715 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3716 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3717 | FUNC_TYPE is not a valid function type with a non-null return type | |
3718 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3719 | ||
3720 | static int | |
d2e4a39e | 3721 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3722 | { |
d2e4a39e | 3723 | struct type *return_type; |
14f9c5c9 AS |
3724 | |
3725 | if (func_type == NULL) | |
3726 | return 1; | |
3727 | ||
4c4b4cd2 | 3728 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
18af8284 | 3729 | return_type = get_base_type (TYPE_TARGET_TYPE (func_type)); |
4c4b4cd2 | 3730 | else |
18af8284 | 3731 | return_type = get_base_type (func_type); |
14f9c5c9 AS |
3732 | if (return_type == NULL) |
3733 | return 1; | |
3734 | ||
18af8284 | 3735 | context_type = get_base_type (context_type); |
14f9c5c9 AS |
3736 | |
3737 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3738 | return context_type == NULL || return_type == context_type; | |
3739 | else if (context_type == NULL) | |
3740 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3741 | else | |
3742 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3743 | } | |
3744 | ||
3745 | ||
4c4b4cd2 | 3746 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3747 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3748 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3749 | that returns that type, then eliminate matches that don't. If | |
3750 | CONTEXT_TYPE is void and there is at least one match that does not | |
3751 | return void, eliminate all matches that do. | |
3752 | ||
14f9c5c9 AS |
3753 | Asks the user if there is more than one match remaining. Returns -1 |
3754 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3755 | solely for messages. May re-arrange and modify SYMS in |
3756 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3757 | |
4c4b4cd2 | 3758 | static int |
d12307c1 | 3759 | ada_resolve_function (struct block_symbol syms[], |
4c4b4cd2 PH |
3760 | int nsyms, struct value **args, int nargs, |
3761 | const char *name, struct type *context_type) | |
14f9c5c9 | 3762 | { |
30b15541 | 3763 | int fallback; |
14f9c5c9 | 3764 | int k; |
4c4b4cd2 | 3765 | int m; /* Number of hits */ |
14f9c5c9 | 3766 | |
d2e4a39e | 3767 | m = 0; |
30b15541 UW |
3768 | /* In the first pass of the loop, we only accept functions matching |
3769 | context_type. If none are found, we add a second pass of the loop | |
3770 | where every function is accepted. */ | |
3771 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
14f9c5c9 AS |
3772 | { |
3773 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3774 | { |
d12307c1 | 3775 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].symbol)); |
4c4b4cd2 | 3776 | |
d12307c1 | 3777 | if (ada_args_match (syms[k].symbol, args, nargs) |
30b15541 | 3778 | && (fallback || return_match (type, context_type))) |
4c4b4cd2 PH |
3779 | { |
3780 | syms[m] = syms[k]; | |
3781 | m += 1; | |
3782 | } | |
3783 | } | |
14f9c5c9 AS |
3784 | } |
3785 | ||
dc5c8746 PMR |
3786 | /* If we got multiple matches, ask the user which one to use. Don't do this |
3787 | interactive thing during completion, though, as the purpose of the | |
3788 | completion is providing a list of all possible matches. Prompting the | |
3789 | user to filter it down would be completely unexpected in this case. */ | |
14f9c5c9 AS |
3790 | if (m == 0) |
3791 | return -1; | |
dc5c8746 | 3792 | else if (m > 1 && !parse_completion) |
14f9c5c9 | 3793 | { |
323e0a4a | 3794 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3795 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3796 | return 0; |
3797 | } | |
3798 | return 0; | |
3799 | } | |
3800 | ||
4c4b4cd2 PH |
3801 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3802 | in a listing of choices during disambiguation (see sort_choices, below). | |
3803 | The idea is that overloadings of a subprogram name from the | |
3804 | same package should sort in their source order. We settle for ordering | |
3805 | such symbols by their trailing number (__N or $N). */ | |
3806 | ||
14f9c5c9 | 3807 | static int |
0d5cff50 | 3808 | encoded_ordered_before (const char *N0, const char *N1) |
14f9c5c9 AS |
3809 | { |
3810 | if (N1 == NULL) | |
3811 | return 0; | |
3812 | else if (N0 == NULL) | |
3813 | return 1; | |
3814 | else | |
3815 | { | |
3816 | int k0, k1; | |
5b4ee69b | 3817 | |
d2e4a39e | 3818 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3819 | ; |
d2e4a39e | 3820 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3821 | ; |
d2e4a39e | 3822 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3823 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3824 | { | |
3825 | int n0, n1; | |
5b4ee69b | 3826 | |
4c4b4cd2 PH |
3827 | n0 = k0; |
3828 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3829 | n0 -= 1; | |
3830 | n1 = k1; | |
3831 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3832 | n1 -= 1; | |
3833 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3834 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3835 | } | |
14f9c5c9 AS |
3836 | return (strcmp (N0, N1) < 0); |
3837 | } | |
3838 | } | |
d2e4a39e | 3839 | |
4c4b4cd2 PH |
3840 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3841 | encoded names. */ | |
3842 | ||
d2e4a39e | 3843 | static void |
d12307c1 | 3844 | sort_choices (struct block_symbol syms[], int nsyms) |
14f9c5c9 | 3845 | { |
4c4b4cd2 | 3846 | int i; |
5b4ee69b | 3847 | |
d2e4a39e | 3848 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3849 | { |
d12307c1 | 3850 | struct block_symbol sym = syms[i]; |
14f9c5c9 AS |
3851 | int j; |
3852 | ||
d2e4a39e | 3853 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 | 3854 | { |
d12307c1 PMR |
3855 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].symbol), |
3856 | SYMBOL_LINKAGE_NAME (sym.symbol))) | |
4c4b4cd2 PH |
3857 | break; |
3858 | syms[j + 1] = syms[j]; | |
3859 | } | |
d2e4a39e | 3860 | syms[j + 1] = sym; |
14f9c5c9 AS |
3861 | } |
3862 | } | |
3863 | ||
d72413e6 PMR |
3864 | /* Whether GDB should display formals and return types for functions in the |
3865 | overloads selection menu. */ | |
3866 | static int print_signatures = 1; | |
3867 | ||
3868 | /* Print the signature for SYM on STREAM according to the FLAGS options. For | |
3869 | all but functions, the signature is just the name of the symbol. For | |
3870 | functions, this is the name of the function, the list of types for formals | |
3871 | and the return type (if any). */ | |
3872 | ||
3873 | static void | |
3874 | ada_print_symbol_signature (struct ui_file *stream, struct symbol *sym, | |
3875 | const struct type_print_options *flags) | |
3876 | { | |
3877 | struct type *type = SYMBOL_TYPE (sym); | |
3878 | ||
3879 | fprintf_filtered (stream, "%s", SYMBOL_PRINT_NAME (sym)); | |
3880 | if (!print_signatures | |
3881 | || type == NULL | |
3882 | || TYPE_CODE (type) != TYPE_CODE_FUNC) | |
3883 | return; | |
3884 | ||
3885 | if (TYPE_NFIELDS (type) > 0) | |
3886 | { | |
3887 | int i; | |
3888 | ||
3889 | fprintf_filtered (stream, " ("); | |
3890 | for (i = 0; i < TYPE_NFIELDS (type); ++i) | |
3891 | { | |
3892 | if (i > 0) | |
3893 | fprintf_filtered (stream, "; "); | |
3894 | ada_print_type (TYPE_FIELD_TYPE (type, i), NULL, stream, -1, 0, | |
3895 | flags); | |
3896 | } | |
3897 | fprintf_filtered (stream, ")"); | |
3898 | } | |
3899 | if (TYPE_TARGET_TYPE (type) != NULL | |
3900 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID) | |
3901 | { | |
3902 | fprintf_filtered (stream, " return "); | |
3903 | ada_print_type (TYPE_TARGET_TYPE (type), NULL, stream, -1, 0, flags); | |
3904 | } | |
3905 | } | |
3906 | ||
4c4b4cd2 PH |
3907 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3908 | by asking the user (if necessary), returning the number selected, | |
3909 | and setting the first elements of SYMS items. Error if no symbols | |
3910 | selected. */ | |
14f9c5c9 AS |
3911 | |
3912 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3913 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3914 | |
3915 | int | |
d12307c1 | 3916 | user_select_syms (struct block_symbol *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3917 | { |
3918 | int i; | |
8d749320 | 3919 | int *chosen = XALLOCAVEC (int , nsyms); |
14f9c5c9 AS |
3920 | int n_chosen; |
3921 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3922 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3923 | |
3924 | if (max_results < 1) | |
323e0a4a | 3925 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3926 | if (nsyms <= 1) |
3927 | return nsyms; | |
3928 | ||
717d2f5a JB |
3929 | if (select_mode == multiple_symbols_cancel) |
3930 | error (_("\ | |
3931 | canceled because the command is ambiguous\n\ | |
3932 | See set/show multiple-symbol.")); | |
3933 | ||
3934 | /* If select_mode is "all", then return all possible symbols. | |
3935 | Only do that if more than one symbol can be selected, of course. | |
3936 | Otherwise, display the menu as usual. */ | |
3937 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3938 | return nsyms; | |
3939 | ||
323e0a4a | 3940 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3941 | if (max_results > 1) |
323e0a4a | 3942 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3943 | |
4c4b4cd2 | 3944 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3945 | |
3946 | for (i = 0; i < nsyms; i += 1) | |
3947 | { | |
d12307c1 | 3948 | if (syms[i].symbol == NULL) |
4c4b4cd2 PH |
3949 | continue; |
3950 | ||
d12307c1 | 3951 | if (SYMBOL_CLASS (syms[i].symbol) == LOC_BLOCK) |
4c4b4cd2 | 3952 | { |
76a01679 | 3953 | struct symtab_and_line sal = |
d12307c1 | 3954 | find_function_start_sal (syms[i].symbol, 1); |
5b4ee69b | 3955 | |
d72413e6 PMR |
3956 | printf_unfiltered ("[%d] ", i + first_choice); |
3957 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3958 | &type_print_raw_options); | |
323e0a4a | 3959 | if (sal.symtab == NULL) |
d72413e6 | 3960 | printf_unfiltered (_(" at <no source file available>:%d\n"), |
323e0a4a AC |
3961 | sal.line); |
3962 | else | |
d72413e6 | 3963 | printf_unfiltered (_(" at %s:%d\n"), |
05cba821 JK |
3964 | symtab_to_filename_for_display (sal.symtab), |
3965 | sal.line); | |
4c4b4cd2 PH |
3966 | continue; |
3967 | } | |
d2e4a39e | 3968 | else |
4c4b4cd2 PH |
3969 | { |
3970 | int is_enumeral = | |
d12307c1 PMR |
3971 | (SYMBOL_CLASS (syms[i].symbol) == LOC_CONST |
3972 | && SYMBOL_TYPE (syms[i].symbol) != NULL | |
3973 | && TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) == TYPE_CODE_ENUM); | |
1994afbf DE |
3974 | struct symtab *symtab = NULL; |
3975 | ||
d12307c1 PMR |
3976 | if (SYMBOL_OBJFILE_OWNED (syms[i].symbol)) |
3977 | symtab = symbol_symtab (syms[i].symbol); | |
4c4b4cd2 | 3978 | |
d12307c1 | 3979 | if (SYMBOL_LINE (syms[i].symbol) != 0 && symtab != NULL) |
d72413e6 PMR |
3980 | { |
3981 | printf_unfiltered ("[%d] ", i + first_choice); | |
3982 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3983 | &type_print_raw_options); | |
3984 | printf_unfiltered (_(" at %s:%d\n"), | |
3985 | symtab_to_filename_for_display (symtab), | |
3986 | SYMBOL_LINE (syms[i].symbol)); | |
3987 | } | |
76a01679 | 3988 | else if (is_enumeral |
d12307c1 | 3989 | && TYPE_NAME (SYMBOL_TYPE (syms[i].symbol)) != NULL) |
4c4b4cd2 | 3990 | { |
a3f17187 | 3991 | printf_unfiltered (("[%d] "), i + first_choice); |
d12307c1 | 3992 | ada_print_type (SYMBOL_TYPE (syms[i].symbol), NULL, |
79d43c61 | 3993 | gdb_stdout, -1, 0, &type_print_raw_options); |
323e0a4a | 3994 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
d12307c1 | 3995 | SYMBOL_PRINT_NAME (syms[i].symbol)); |
4c4b4cd2 | 3996 | } |
d72413e6 PMR |
3997 | else |
3998 | { | |
3999 | printf_unfiltered ("[%d] ", i + first_choice); | |
4000 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
4001 | &type_print_raw_options); | |
4002 | ||
4003 | if (symtab != NULL) | |
4004 | printf_unfiltered (is_enumeral | |
4005 | ? _(" in %s (enumeral)\n") | |
4006 | : _(" at %s:?\n"), | |
4007 | symtab_to_filename_for_display (symtab)); | |
4008 | else | |
4009 | printf_unfiltered (is_enumeral | |
4010 | ? _(" (enumeral)\n") | |
4011 | : _(" at ?\n")); | |
4012 | } | |
4c4b4cd2 | 4013 | } |
14f9c5c9 | 4014 | } |
d2e4a39e | 4015 | |
14f9c5c9 | 4016 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 4017 | "overload-choice"); |
14f9c5c9 AS |
4018 | |
4019 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 4020 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
4021 | |
4022 | return n_chosen; | |
4023 | } | |
4024 | ||
4025 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 4026 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
4027 | order in CHOICES[0 .. N-1], and return N. |
4028 | ||
4029 | The user types choices as a sequence of numbers on one line | |
4030 | separated by blanks, encoding them as follows: | |
4031 | ||
4c4b4cd2 | 4032 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
4033 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
4034 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
4035 | ||
4c4b4cd2 | 4036 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
4037 | |
4038 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 4039 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
4040 | |
4041 | int | |
d2e4a39e | 4042 | get_selections (int *choices, int n_choices, int max_results, |
a121b7c1 | 4043 | int is_all_choice, const char *annotation_suffix) |
14f9c5c9 | 4044 | { |
d2e4a39e | 4045 | char *args; |
a121b7c1 | 4046 | const char *prompt; |
14f9c5c9 AS |
4047 | int n_chosen; |
4048 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 4049 | |
14f9c5c9 AS |
4050 | prompt = getenv ("PS2"); |
4051 | if (prompt == NULL) | |
0bcd0149 | 4052 | prompt = "> "; |
14f9c5c9 | 4053 | |
0bcd0149 | 4054 | args = command_line_input (prompt, 0, annotation_suffix); |
d2e4a39e | 4055 | |
14f9c5c9 | 4056 | if (args == NULL) |
323e0a4a | 4057 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
4058 | |
4059 | n_chosen = 0; | |
76a01679 | 4060 | |
4c4b4cd2 PH |
4061 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
4062 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
4063 | while (1) |
4064 | { | |
d2e4a39e | 4065 | char *args2; |
14f9c5c9 AS |
4066 | int choice, j; |
4067 | ||
0fcd72ba | 4068 | args = skip_spaces (args); |
14f9c5c9 | 4069 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 4070 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 4071 | else if (*args == '\0') |
4c4b4cd2 | 4072 | break; |
14f9c5c9 AS |
4073 | |
4074 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 4075 | if (args == args2 || choice < 0 |
4c4b4cd2 | 4076 | || choice > n_choices + first_choice - 1) |
323e0a4a | 4077 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
4078 | args = args2; |
4079 | ||
d2e4a39e | 4080 | if (choice == 0) |
323e0a4a | 4081 | error (_("cancelled")); |
14f9c5c9 AS |
4082 | |
4083 | if (choice < first_choice) | |
4c4b4cd2 PH |
4084 | { |
4085 | n_chosen = n_choices; | |
4086 | for (j = 0; j < n_choices; j += 1) | |
4087 | choices[j] = j; | |
4088 | break; | |
4089 | } | |
14f9c5c9 AS |
4090 | choice -= first_choice; |
4091 | ||
d2e4a39e | 4092 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
4093 | { |
4094 | } | |
14f9c5c9 AS |
4095 | |
4096 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
4097 | { |
4098 | int k; | |
5b4ee69b | 4099 | |
4c4b4cd2 PH |
4100 | for (k = n_chosen - 1; k > j; k -= 1) |
4101 | choices[k + 1] = choices[k]; | |
4102 | choices[j + 1] = choice; | |
4103 | n_chosen += 1; | |
4104 | } | |
14f9c5c9 AS |
4105 | } |
4106 | ||
4107 | if (n_chosen > max_results) | |
323e0a4a | 4108 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 4109 | |
14f9c5c9 AS |
4110 | return n_chosen; |
4111 | } | |
4112 | ||
4c4b4cd2 PH |
4113 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
4114 | on the function identified by SYM and BLOCK, and taking NARGS | |
4115 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
4116 | |
4117 | static void | |
e9d9f57e | 4118 | replace_operator_with_call (expression_up *expp, int pc, int nargs, |
4c4b4cd2 | 4119 | int oplen, struct symbol *sym, |
270140bd | 4120 | const struct block *block) |
14f9c5c9 AS |
4121 | { |
4122 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 4123 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 4124 | struct expression *newexp = (struct expression *) |
8c1a34e7 | 4125 | xzalloc (sizeof (struct expression) |
4c4b4cd2 | 4126 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
e9d9f57e | 4127 | struct expression *exp = expp->get (); |
14f9c5c9 AS |
4128 | |
4129 | newexp->nelts = exp->nelts + 7 - oplen; | |
4130 | newexp->language_defn = exp->language_defn; | |
3489610d | 4131 | newexp->gdbarch = exp->gdbarch; |
14f9c5c9 | 4132 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); |
d2e4a39e | 4133 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 4134 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
4135 | |
4136 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
4137 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
4138 | ||
4139 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
4140 | newexp->elts[pc + 4].block = block; | |
4141 | newexp->elts[pc + 5].symbol = sym; | |
4142 | ||
e9d9f57e | 4143 | expp->reset (newexp); |
d2e4a39e | 4144 | } |
14f9c5c9 AS |
4145 | |
4146 | /* Type-class predicates */ | |
4147 | ||
4c4b4cd2 PH |
4148 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
4149 | or FLOAT). */ | |
14f9c5c9 AS |
4150 | |
4151 | static int | |
d2e4a39e | 4152 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
4153 | { |
4154 | if (type == NULL) | |
4155 | return 0; | |
d2e4a39e AS |
4156 | else |
4157 | { | |
4158 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4159 | { |
4160 | case TYPE_CODE_INT: | |
4161 | case TYPE_CODE_FLT: | |
4162 | return 1; | |
4163 | case TYPE_CODE_RANGE: | |
4164 | return (type == TYPE_TARGET_TYPE (type) | |
4165 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
4166 | default: | |
4167 | return 0; | |
4168 | } | |
d2e4a39e | 4169 | } |
14f9c5c9 AS |
4170 | } |
4171 | ||
4c4b4cd2 | 4172 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
4173 | |
4174 | static int | |
d2e4a39e | 4175 | integer_type_p (struct type *type) |
14f9c5c9 AS |
4176 | { |
4177 | if (type == NULL) | |
4178 | return 0; | |
d2e4a39e AS |
4179 | else |
4180 | { | |
4181 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4182 | { |
4183 | case TYPE_CODE_INT: | |
4184 | return 1; | |
4185 | case TYPE_CODE_RANGE: | |
4186 | return (type == TYPE_TARGET_TYPE (type) | |
4187 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
4188 | default: | |
4189 | return 0; | |
4190 | } | |
d2e4a39e | 4191 | } |
14f9c5c9 AS |
4192 | } |
4193 | ||
4c4b4cd2 | 4194 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
4195 | |
4196 | static int | |
d2e4a39e | 4197 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
4198 | { |
4199 | if (type == NULL) | |
4200 | return 0; | |
d2e4a39e AS |
4201 | else |
4202 | { | |
4203 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4204 | { |
4205 | case TYPE_CODE_INT: | |
4206 | case TYPE_CODE_RANGE: | |
4207 | case TYPE_CODE_ENUM: | |
4208 | case TYPE_CODE_FLT: | |
4209 | return 1; | |
4210 | default: | |
4211 | return 0; | |
4212 | } | |
d2e4a39e | 4213 | } |
14f9c5c9 AS |
4214 | } |
4215 | ||
4c4b4cd2 | 4216 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
4217 | |
4218 | static int | |
d2e4a39e | 4219 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
4220 | { |
4221 | if (type == NULL) | |
4222 | return 0; | |
d2e4a39e AS |
4223 | else |
4224 | { | |
4225 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
4226 | { |
4227 | case TYPE_CODE_INT: | |
4228 | case TYPE_CODE_RANGE: | |
4229 | case TYPE_CODE_ENUM: | |
872f0337 | 4230 | case TYPE_CODE_BOOL: |
4c4b4cd2 PH |
4231 | return 1; |
4232 | default: | |
4233 | return 0; | |
4234 | } | |
d2e4a39e | 4235 | } |
14f9c5c9 AS |
4236 | } |
4237 | ||
4c4b4cd2 PH |
4238 | /* Returns non-zero if OP with operands in the vector ARGS could be |
4239 | a user-defined function. Errs on the side of pre-defined operators | |
4240 | (i.e., result 0). */ | |
14f9c5c9 AS |
4241 | |
4242 | static int | |
d2e4a39e | 4243 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 4244 | { |
76a01679 | 4245 | struct type *type0 = |
df407dfe | 4246 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 4247 | struct type *type1 = |
df407dfe | 4248 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 4249 | |
4c4b4cd2 PH |
4250 | if (type0 == NULL) |
4251 | return 0; | |
4252 | ||
14f9c5c9 AS |
4253 | switch (op) |
4254 | { | |
4255 | default: | |
4256 | return 0; | |
4257 | ||
4258 | case BINOP_ADD: | |
4259 | case BINOP_SUB: | |
4260 | case BINOP_MUL: | |
4261 | case BINOP_DIV: | |
d2e4a39e | 4262 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
4263 | |
4264 | case BINOP_REM: | |
4265 | case BINOP_MOD: | |
4266 | case BINOP_BITWISE_AND: | |
4267 | case BINOP_BITWISE_IOR: | |
4268 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 4269 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4270 | |
4271 | case BINOP_EQUAL: | |
4272 | case BINOP_NOTEQUAL: | |
4273 | case BINOP_LESS: | |
4274 | case BINOP_GTR: | |
4275 | case BINOP_LEQ: | |
4276 | case BINOP_GEQ: | |
d2e4a39e | 4277 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
4278 | |
4279 | case BINOP_CONCAT: | |
ee90b9ab | 4280 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
4281 | |
4282 | case BINOP_EXP: | |
d2e4a39e | 4283 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4284 | |
4285 | case UNOP_NEG: | |
4286 | case UNOP_PLUS: | |
4287 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
4288 | case UNOP_ABS: |
4289 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
4290 | |
4291 | } | |
4292 | } | |
4293 | \f | |
4c4b4cd2 | 4294 | /* Renaming */ |
14f9c5c9 | 4295 | |
aeb5907d JB |
4296 | /* NOTES: |
4297 | ||
4298 | 1. In the following, we assume that a renaming type's name may | |
4299 | have an ___XD suffix. It would be nice if this went away at some | |
4300 | point. | |
4301 | 2. We handle both the (old) purely type-based representation of | |
4302 | renamings and the (new) variable-based encoding. At some point, | |
4303 | it is devoutly to be hoped that the former goes away | |
4304 | (FIXME: hilfinger-2007-07-09). | |
4305 | 3. Subprogram renamings are not implemented, although the XRS | |
4306 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
4307 | ||
4308 | /* If SYM encodes a renaming, | |
4309 | ||
4310 | <renaming> renames <renamed entity>, | |
4311 | ||
4312 | sets *LEN to the length of the renamed entity's name, | |
4313 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
4314 | the string describing the subcomponent selected from the renamed | |
0963b4bd | 4315 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming |
aeb5907d JB |
4316 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR |
4317 | are undefined). Otherwise, returns a value indicating the category | |
4318 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
4319 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
4320 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
4321 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
4322 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
4323 | may be NULL, in which case they are not assigned. | |
4324 | ||
4325 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
4326 | ||
4327 | enum ada_renaming_category | |
4328 | ada_parse_renaming (struct symbol *sym, | |
4329 | const char **renamed_entity, int *len, | |
4330 | const char **renaming_expr) | |
4331 | { | |
4332 | enum ada_renaming_category kind; | |
4333 | const char *info; | |
4334 | const char *suffix; | |
4335 | ||
4336 | if (sym == NULL) | |
4337 | return ADA_NOT_RENAMING; | |
4338 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 4339 | { |
aeb5907d JB |
4340 | default: |
4341 | return ADA_NOT_RENAMING; | |
4342 | case LOC_TYPEDEF: | |
4343 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
4344 | renamed_entity, len, renaming_expr); | |
4345 | case LOC_LOCAL: | |
4346 | case LOC_STATIC: | |
4347 | case LOC_COMPUTED: | |
4348 | case LOC_OPTIMIZED_OUT: | |
4349 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
4350 | if (info == NULL) | |
4351 | return ADA_NOT_RENAMING; | |
4352 | switch (info[5]) | |
4353 | { | |
4354 | case '_': | |
4355 | kind = ADA_OBJECT_RENAMING; | |
4356 | info += 6; | |
4357 | break; | |
4358 | case 'E': | |
4359 | kind = ADA_EXCEPTION_RENAMING; | |
4360 | info += 7; | |
4361 | break; | |
4362 | case 'P': | |
4363 | kind = ADA_PACKAGE_RENAMING; | |
4364 | info += 7; | |
4365 | break; | |
4366 | case 'S': | |
4367 | kind = ADA_SUBPROGRAM_RENAMING; | |
4368 | info += 7; | |
4369 | break; | |
4370 | default: | |
4371 | return ADA_NOT_RENAMING; | |
4372 | } | |
14f9c5c9 | 4373 | } |
4c4b4cd2 | 4374 | |
aeb5907d JB |
4375 | if (renamed_entity != NULL) |
4376 | *renamed_entity = info; | |
4377 | suffix = strstr (info, "___XE"); | |
4378 | if (suffix == NULL || suffix == info) | |
4379 | return ADA_NOT_RENAMING; | |
4380 | if (len != NULL) | |
4381 | *len = strlen (info) - strlen (suffix); | |
4382 | suffix += 5; | |
4383 | if (renaming_expr != NULL) | |
4384 | *renaming_expr = suffix; | |
4385 | return kind; | |
4386 | } | |
4387 | ||
4388 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
4389 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
4390 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
4391 | ADA_NOT_RENAMING otherwise. */ | |
4392 | static enum ada_renaming_category | |
4393 | parse_old_style_renaming (struct type *type, | |
4394 | const char **renamed_entity, int *len, | |
4395 | const char **renaming_expr) | |
4396 | { | |
4397 | enum ada_renaming_category kind; | |
4398 | const char *name; | |
4399 | const char *info; | |
4400 | const char *suffix; | |
14f9c5c9 | 4401 | |
aeb5907d JB |
4402 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
4403 | || TYPE_NFIELDS (type) != 1) | |
4404 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 4405 | |
aeb5907d JB |
4406 | name = type_name_no_tag (type); |
4407 | if (name == NULL) | |
4408 | return ADA_NOT_RENAMING; | |
4409 | ||
4410 | name = strstr (name, "___XR"); | |
4411 | if (name == NULL) | |
4412 | return ADA_NOT_RENAMING; | |
4413 | switch (name[5]) | |
4414 | { | |
4415 | case '\0': | |
4416 | case '_': | |
4417 | kind = ADA_OBJECT_RENAMING; | |
4418 | break; | |
4419 | case 'E': | |
4420 | kind = ADA_EXCEPTION_RENAMING; | |
4421 | break; | |
4422 | case 'P': | |
4423 | kind = ADA_PACKAGE_RENAMING; | |
4424 | break; | |
4425 | case 'S': | |
4426 | kind = ADA_SUBPROGRAM_RENAMING; | |
4427 | break; | |
4428 | default: | |
4429 | return ADA_NOT_RENAMING; | |
4430 | } | |
14f9c5c9 | 4431 | |
aeb5907d JB |
4432 | info = TYPE_FIELD_NAME (type, 0); |
4433 | if (info == NULL) | |
4434 | return ADA_NOT_RENAMING; | |
4435 | if (renamed_entity != NULL) | |
4436 | *renamed_entity = info; | |
4437 | suffix = strstr (info, "___XE"); | |
4438 | if (renaming_expr != NULL) | |
4439 | *renaming_expr = suffix + 5; | |
4440 | if (suffix == NULL || suffix == info) | |
4441 | return ADA_NOT_RENAMING; | |
4442 | if (len != NULL) | |
4443 | *len = suffix - info; | |
4444 | return kind; | |
a5ee536b JB |
4445 | } |
4446 | ||
4447 | /* Compute the value of the given RENAMING_SYM, which is expected to | |
4448 | be a symbol encoding a renaming expression. BLOCK is the block | |
4449 | used to evaluate the renaming. */ | |
52ce6436 | 4450 | |
a5ee536b JB |
4451 | static struct value * |
4452 | ada_read_renaming_var_value (struct symbol *renaming_sym, | |
3977b71f | 4453 | const struct block *block) |
a5ee536b | 4454 | { |
bbc13ae3 | 4455 | const char *sym_name; |
a5ee536b | 4456 | |
bbc13ae3 | 4457 | sym_name = SYMBOL_LINKAGE_NAME (renaming_sym); |
4d01a485 PA |
4458 | expression_up expr = parse_exp_1 (&sym_name, 0, block, 0); |
4459 | return evaluate_expression (expr.get ()); | |
a5ee536b | 4460 | } |
14f9c5c9 | 4461 | \f |
d2e4a39e | 4462 | |
4c4b4cd2 | 4463 | /* Evaluation: Function Calls */ |
14f9c5c9 | 4464 | |
4c4b4cd2 | 4465 | /* Return an lvalue containing the value VAL. This is the identity on |
40bc484c JB |
4466 | lvalues, and otherwise has the side-effect of allocating memory |
4467 | in the inferior where a copy of the value contents is copied. */ | |
14f9c5c9 | 4468 | |
d2e4a39e | 4469 | static struct value * |
40bc484c | 4470 | ensure_lval (struct value *val) |
14f9c5c9 | 4471 | { |
40bc484c JB |
4472 | if (VALUE_LVAL (val) == not_lval |
4473 | || VALUE_LVAL (val) == lval_internalvar) | |
c3e5cd34 | 4474 | { |
df407dfe | 4475 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
40bc484c JB |
4476 | const CORE_ADDR addr = |
4477 | value_as_long (value_allocate_space_in_inferior (len)); | |
c3e5cd34 | 4478 | |
a84a8a0d | 4479 | VALUE_LVAL (val) = lval_memory; |
1a088441 | 4480 | set_value_address (val, addr); |
40bc484c | 4481 | write_memory (addr, value_contents (val), len); |
c3e5cd34 | 4482 | } |
14f9c5c9 AS |
4483 | |
4484 | return val; | |
4485 | } | |
4486 | ||
4487 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
4488 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
4489 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 4490 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 4491 | |
a93c0eb6 | 4492 | struct value * |
40bc484c | 4493 | ada_convert_actual (struct value *actual, struct type *formal_type0) |
14f9c5c9 | 4494 | { |
df407dfe | 4495 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 4496 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
4497 | struct type *formal_target = |
4498 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 4499 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
4500 | struct type *actual_target = |
4501 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 4502 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 4503 | |
4c4b4cd2 | 4504 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 | 4505 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
40bc484c | 4506 | return make_array_descriptor (formal_type, actual); |
a84a8a0d JB |
4507 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
4508 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 4509 | { |
a84a8a0d | 4510 | struct value *result; |
5b4ee69b | 4511 | |
14f9c5c9 | 4512 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 4513 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 4514 | result = desc_data (actual); |
cb923fcc | 4515 | else if (TYPE_CODE (formal_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
4516 | { |
4517 | if (VALUE_LVAL (actual) != lval_memory) | |
4518 | { | |
4519 | struct value *val; | |
5b4ee69b | 4520 | |
df407dfe | 4521 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 4522 | val = allocate_value (actual_type); |
990a07ab | 4523 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 4524 | (char *) value_contents (actual), |
4c4b4cd2 | 4525 | TYPE_LENGTH (actual_type)); |
40bc484c | 4526 | actual = ensure_lval (val); |
4c4b4cd2 | 4527 | } |
a84a8a0d | 4528 | result = value_addr (actual); |
4c4b4cd2 | 4529 | } |
a84a8a0d JB |
4530 | else |
4531 | return actual; | |
b1af9e97 | 4532 | return value_cast_pointers (formal_type, result, 0); |
14f9c5c9 AS |
4533 | } |
4534 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
4535 | return ada_value_ind (actual); | |
8344af1e JB |
4536 | else if (ada_is_aligner_type (formal_type)) |
4537 | { | |
4538 | /* We need to turn this parameter into an aligner type | |
4539 | as well. */ | |
4540 | struct value *aligner = allocate_value (formal_type); | |
4541 | struct value *component = ada_value_struct_elt (aligner, "F", 0); | |
4542 | ||
4543 | value_assign_to_component (aligner, component, actual); | |
4544 | return aligner; | |
4545 | } | |
14f9c5c9 AS |
4546 | |
4547 | return actual; | |
4548 | } | |
4549 | ||
438c98a1 JB |
4550 | /* Convert VALUE (which must be an address) to a CORE_ADDR that is a pointer of |
4551 | type TYPE. This is usually an inefficient no-op except on some targets | |
4552 | (such as AVR) where the representation of a pointer and an address | |
4553 | differs. */ | |
4554 | ||
4555 | static CORE_ADDR | |
4556 | value_pointer (struct value *value, struct type *type) | |
4557 | { | |
4558 | struct gdbarch *gdbarch = get_type_arch (type); | |
4559 | unsigned len = TYPE_LENGTH (type); | |
224c3ddb | 4560 | gdb_byte *buf = (gdb_byte *) alloca (len); |
438c98a1 JB |
4561 | CORE_ADDR addr; |
4562 | ||
4563 | addr = value_address (value); | |
4564 | gdbarch_address_to_pointer (gdbarch, type, buf, addr); | |
4565 | addr = extract_unsigned_integer (buf, len, gdbarch_byte_order (gdbarch)); | |
4566 | return addr; | |
4567 | } | |
4568 | ||
14f9c5c9 | 4569 | |
4c4b4cd2 PH |
4570 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
4571 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 4572 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
4573 | to-descriptor type rather than a descriptor type), a struct value * |
4574 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 4575 | |
d2e4a39e | 4576 | static struct value * |
40bc484c | 4577 | make_array_descriptor (struct type *type, struct value *arr) |
14f9c5c9 | 4578 | { |
d2e4a39e AS |
4579 | struct type *bounds_type = desc_bounds_type (type); |
4580 | struct type *desc_type = desc_base_type (type); | |
4581 | struct value *descriptor = allocate_value (desc_type); | |
4582 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 4583 | int i; |
d2e4a39e | 4584 | |
0963b4bd MS |
4585 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); |
4586 | i > 0; i -= 1) | |
14f9c5c9 | 4587 | { |
19f220c3 JK |
4588 | modify_field (value_type (bounds), value_contents_writeable (bounds), |
4589 | ada_array_bound (arr, i, 0), | |
4590 | desc_bound_bitpos (bounds_type, i, 0), | |
4591 | desc_bound_bitsize (bounds_type, i, 0)); | |
4592 | modify_field (value_type (bounds), value_contents_writeable (bounds), | |
4593 | ada_array_bound (arr, i, 1), | |
4594 | desc_bound_bitpos (bounds_type, i, 1), | |
4595 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 4596 | } |
d2e4a39e | 4597 | |
40bc484c | 4598 | bounds = ensure_lval (bounds); |
d2e4a39e | 4599 | |
19f220c3 JK |
4600 | modify_field (value_type (descriptor), |
4601 | value_contents_writeable (descriptor), | |
4602 | value_pointer (ensure_lval (arr), | |
4603 | TYPE_FIELD_TYPE (desc_type, 0)), | |
4604 | fat_pntr_data_bitpos (desc_type), | |
4605 | fat_pntr_data_bitsize (desc_type)); | |
4606 | ||
4607 | modify_field (value_type (descriptor), | |
4608 | value_contents_writeable (descriptor), | |
4609 | value_pointer (bounds, | |
4610 | TYPE_FIELD_TYPE (desc_type, 1)), | |
4611 | fat_pntr_bounds_bitpos (desc_type), | |
4612 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 4613 | |
40bc484c | 4614 | descriptor = ensure_lval (descriptor); |
14f9c5c9 AS |
4615 | |
4616 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
4617 | return value_addr (descriptor); | |
4618 | else | |
4619 | return descriptor; | |
4620 | } | |
14f9c5c9 | 4621 | \f |
3d9434b5 JB |
4622 | /* Symbol Cache Module */ |
4623 | ||
3d9434b5 | 4624 | /* Performance measurements made as of 2010-01-15 indicate that |
ee01b665 | 4625 | this cache does bring some noticeable improvements. Depending |
3d9434b5 JB |
4626 | on the type of entity being printed, the cache can make it as much |
4627 | as an order of magnitude faster than without it. | |
4628 | ||
4629 | The descriptive type DWARF extension has significantly reduced | |
4630 | the need for this cache, at least when DWARF is being used. However, | |
4631 | even in this case, some expensive name-based symbol searches are still | |
4632 | sometimes necessary - to find an XVZ variable, mostly. */ | |
4633 | ||
ee01b665 | 4634 | /* Initialize the contents of SYM_CACHE. */ |
3d9434b5 | 4635 | |
ee01b665 JB |
4636 | static void |
4637 | ada_init_symbol_cache (struct ada_symbol_cache *sym_cache) | |
4638 | { | |
4639 | obstack_init (&sym_cache->cache_space); | |
4640 | memset (sym_cache->root, '\000', sizeof (sym_cache->root)); | |
4641 | } | |
3d9434b5 | 4642 | |
ee01b665 JB |
4643 | /* Free the memory used by SYM_CACHE. */ |
4644 | ||
4645 | static void | |
4646 | ada_free_symbol_cache (struct ada_symbol_cache *sym_cache) | |
3d9434b5 | 4647 | { |
ee01b665 JB |
4648 | obstack_free (&sym_cache->cache_space, NULL); |
4649 | xfree (sym_cache); | |
4650 | } | |
3d9434b5 | 4651 | |
ee01b665 JB |
4652 | /* Return the symbol cache associated to the given program space PSPACE. |
4653 | If not allocated for this PSPACE yet, allocate and initialize one. */ | |
3d9434b5 | 4654 | |
ee01b665 JB |
4655 | static struct ada_symbol_cache * |
4656 | ada_get_symbol_cache (struct program_space *pspace) | |
4657 | { | |
4658 | struct ada_pspace_data *pspace_data = get_ada_pspace_data (pspace); | |
ee01b665 | 4659 | |
66c168ae | 4660 | if (pspace_data->sym_cache == NULL) |
ee01b665 | 4661 | { |
66c168ae JB |
4662 | pspace_data->sym_cache = XCNEW (struct ada_symbol_cache); |
4663 | ada_init_symbol_cache (pspace_data->sym_cache); | |
ee01b665 JB |
4664 | } |
4665 | ||
66c168ae | 4666 | return pspace_data->sym_cache; |
ee01b665 | 4667 | } |
3d9434b5 JB |
4668 | |
4669 | /* Clear all entries from the symbol cache. */ | |
4670 | ||
4671 | static void | |
4672 | ada_clear_symbol_cache (void) | |
4673 | { | |
ee01b665 JB |
4674 | struct ada_symbol_cache *sym_cache |
4675 | = ada_get_symbol_cache (current_program_space); | |
4676 | ||
4677 | obstack_free (&sym_cache->cache_space, NULL); | |
4678 | ada_init_symbol_cache (sym_cache); | |
3d9434b5 JB |
4679 | } |
4680 | ||
fe978cb0 | 4681 | /* Search our cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4682 | Return it if found, or NULL otherwise. */ |
4683 | ||
4684 | static struct cache_entry ** | |
fe978cb0 | 4685 | find_entry (const char *name, domain_enum domain) |
3d9434b5 | 4686 | { |
ee01b665 JB |
4687 | struct ada_symbol_cache *sym_cache |
4688 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4689 | int h = msymbol_hash (name) % HASH_SIZE; |
4690 | struct cache_entry **e; | |
4691 | ||
ee01b665 | 4692 | for (e = &sym_cache->root[h]; *e != NULL; e = &(*e)->next) |
3d9434b5 | 4693 | { |
fe978cb0 | 4694 | if (domain == (*e)->domain && strcmp (name, (*e)->name) == 0) |
3d9434b5 JB |
4695 | return e; |
4696 | } | |
4697 | return NULL; | |
4698 | } | |
4699 | ||
fe978cb0 | 4700 | /* Search the symbol cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4701 | Return 1 if found, 0 otherwise. |
4702 | ||
4703 | If an entry was found and SYM is not NULL, set *SYM to the entry's | |
4704 | SYM. Same principle for BLOCK if not NULL. */ | |
96d887e8 | 4705 | |
96d887e8 | 4706 | static int |
fe978cb0 | 4707 | lookup_cached_symbol (const char *name, domain_enum domain, |
f0c5f9b2 | 4708 | struct symbol **sym, const struct block **block) |
96d887e8 | 4709 | { |
fe978cb0 | 4710 | struct cache_entry **e = find_entry (name, domain); |
3d9434b5 JB |
4711 | |
4712 | if (e == NULL) | |
4713 | return 0; | |
4714 | if (sym != NULL) | |
4715 | *sym = (*e)->sym; | |
4716 | if (block != NULL) | |
4717 | *block = (*e)->block; | |
4718 | return 1; | |
96d887e8 PH |
4719 | } |
4720 | ||
3d9434b5 | 4721 | /* Assuming that (SYM, BLOCK) is the result of the lookup of NAME |
fe978cb0 | 4722 | in domain DOMAIN, save this result in our symbol cache. */ |
3d9434b5 | 4723 | |
96d887e8 | 4724 | static void |
fe978cb0 | 4725 | cache_symbol (const char *name, domain_enum domain, struct symbol *sym, |
270140bd | 4726 | const struct block *block) |
96d887e8 | 4727 | { |
ee01b665 JB |
4728 | struct ada_symbol_cache *sym_cache |
4729 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4730 | int h; |
4731 | char *copy; | |
4732 | struct cache_entry *e; | |
4733 | ||
1994afbf DE |
4734 | /* Symbols for builtin types don't have a block. |
4735 | For now don't cache such symbols. */ | |
4736 | if (sym != NULL && !SYMBOL_OBJFILE_OWNED (sym)) | |
4737 | return; | |
4738 | ||
3d9434b5 JB |
4739 | /* If the symbol is a local symbol, then do not cache it, as a search |
4740 | for that symbol depends on the context. To determine whether | |
4741 | the symbol is local or not, we check the block where we found it | |
4742 | against the global and static blocks of its associated symtab. */ | |
4743 | if (sym | |
08be3fe3 | 4744 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4745 | GLOBAL_BLOCK) != block |
08be3fe3 | 4746 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4747 | STATIC_BLOCK) != block) |
3d9434b5 JB |
4748 | return; |
4749 | ||
4750 | h = msymbol_hash (name) % HASH_SIZE; | |
ee01b665 JB |
4751 | e = (struct cache_entry *) obstack_alloc (&sym_cache->cache_space, |
4752 | sizeof (*e)); | |
4753 | e->next = sym_cache->root[h]; | |
4754 | sym_cache->root[h] = e; | |
224c3ddb SM |
4755 | e->name = copy |
4756 | = (char *) obstack_alloc (&sym_cache->cache_space, strlen (name) + 1); | |
3d9434b5 JB |
4757 | strcpy (copy, name); |
4758 | e->sym = sym; | |
fe978cb0 | 4759 | e->domain = domain; |
3d9434b5 | 4760 | e->block = block; |
96d887e8 | 4761 | } |
4c4b4cd2 PH |
4762 | \f |
4763 | /* Symbol Lookup */ | |
4764 | ||
b5ec771e PA |
4765 | /* Return the symbol name match type that should be used used when |
4766 | searching for all symbols matching LOOKUP_NAME. | |
c0431670 JB |
4767 | |
4768 | LOOKUP_NAME is expected to be a symbol name after transformation | |
4769 | for Ada lookups (see ada_name_for_lookup). */ | |
4770 | ||
b5ec771e PA |
4771 | static symbol_name_match_type |
4772 | name_match_type_from_name (const char *lookup_name) | |
c0431670 | 4773 | { |
b5ec771e PA |
4774 | return (strstr (lookup_name, "__") == NULL |
4775 | ? symbol_name_match_type::WILD | |
4776 | : symbol_name_match_type::FULL); | |
c0431670 JB |
4777 | } |
4778 | ||
4c4b4cd2 PH |
4779 | /* Return the result of a standard (literal, C-like) lookup of NAME in |
4780 | given DOMAIN, visible from lexical block BLOCK. */ | |
4781 | ||
4782 | static struct symbol * | |
4783 | standard_lookup (const char *name, const struct block *block, | |
4784 | domain_enum domain) | |
4785 | { | |
acbd605d | 4786 | /* Initialize it just to avoid a GCC false warning. */ |
d12307c1 | 4787 | struct block_symbol sym = {NULL, NULL}; |
4c4b4cd2 | 4788 | |
d12307c1 PMR |
4789 | if (lookup_cached_symbol (name, domain, &sym.symbol, NULL)) |
4790 | return sym.symbol; | |
2570f2b7 | 4791 | sym = lookup_symbol_in_language (name, block, domain, language_c, 0); |
d12307c1 PMR |
4792 | cache_symbol (name, domain, sym.symbol, sym.block); |
4793 | return sym.symbol; | |
4c4b4cd2 PH |
4794 | } |
4795 | ||
4796 | ||
4797 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
4798 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
4799 | since they contend in overloading in the same way. */ | |
4800 | static int | |
d12307c1 | 4801 | is_nonfunction (struct block_symbol syms[], int n) |
4c4b4cd2 PH |
4802 | { |
4803 | int i; | |
4804 | ||
4805 | for (i = 0; i < n; i += 1) | |
d12307c1 PMR |
4806 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_FUNC |
4807 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_ENUM | |
4808 | || SYMBOL_CLASS (syms[i].symbol) != LOC_CONST)) | |
14f9c5c9 AS |
4809 | return 1; |
4810 | ||
4811 | return 0; | |
4812 | } | |
4813 | ||
4814 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4815 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4816 | |
4817 | static int | |
d2e4a39e | 4818 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4819 | { |
d2e4a39e | 4820 | if (type0 == type1) |
14f9c5c9 | 4821 | return 1; |
d2e4a39e | 4822 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
4823 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
4824 | return 0; | |
d2e4a39e | 4825 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4826 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4827 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4828 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4829 | return 1; |
d2e4a39e | 4830 | |
14f9c5c9 AS |
4831 | return 0; |
4832 | } | |
4833 | ||
4834 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4835 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4836 | |
4837 | static int | |
d2e4a39e | 4838 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4839 | { |
4840 | if (sym0 == sym1) | |
4841 | return 1; | |
176620f1 | 4842 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4843 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4844 | return 0; | |
4845 | ||
d2e4a39e | 4846 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4847 | { |
4848 | case LOC_UNDEF: | |
4849 | return 1; | |
4850 | case LOC_TYPEDEF: | |
4851 | { | |
4c4b4cd2 PH |
4852 | struct type *type0 = SYMBOL_TYPE (sym0); |
4853 | struct type *type1 = SYMBOL_TYPE (sym1); | |
0d5cff50 DE |
4854 | const char *name0 = SYMBOL_LINKAGE_NAME (sym0); |
4855 | const char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4c4b4cd2 | 4856 | int len0 = strlen (name0); |
5b4ee69b | 4857 | |
4c4b4cd2 PH |
4858 | return |
4859 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4860 | && (equiv_types (type0, type1) | |
4861 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
61012eef | 4862 | && startswith (name1 + len0, "___XV"))); |
14f9c5c9 AS |
4863 | } |
4864 | case LOC_CONST: | |
4865 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4866 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4867 | default: |
4868 | return 0; | |
14f9c5c9 AS |
4869 | } |
4870 | } | |
4871 | ||
d12307c1 | 4872 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct block_symbol |
4c4b4cd2 | 4873 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ |
14f9c5c9 AS |
4874 | |
4875 | static void | |
76a01679 JB |
4876 | add_defn_to_vec (struct obstack *obstackp, |
4877 | struct symbol *sym, | |
f0c5f9b2 | 4878 | const struct block *block) |
14f9c5c9 AS |
4879 | { |
4880 | int i; | |
d12307c1 | 4881 | struct block_symbol *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4882 | |
529cad9c PH |
4883 | /* Do not try to complete stub types, as the debugger is probably |
4884 | already scanning all symbols matching a certain name at the | |
4885 | time when this function is called. Trying to replace the stub | |
4886 | type by its associated full type will cause us to restart a scan | |
4887 | which may lead to an infinite recursion. Instead, the client | |
4888 | collecting the matching symbols will end up collecting several | |
4889 | matches, with at least one of them complete. It can then filter | |
4890 | out the stub ones if needed. */ | |
4891 | ||
4c4b4cd2 PH |
4892 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4893 | { | |
d12307c1 | 4894 | if (lesseq_defined_than (sym, prevDefns[i].symbol)) |
4c4b4cd2 | 4895 | return; |
d12307c1 | 4896 | else if (lesseq_defined_than (prevDefns[i].symbol, sym)) |
4c4b4cd2 | 4897 | { |
d12307c1 | 4898 | prevDefns[i].symbol = sym; |
4c4b4cd2 | 4899 | prevDefns[i].block = block; |
4c4b4cd2 | 4900 | return; |
76a01679 | 4901 | } |
4c4b4cd2 PH |
4902 | } |
4903 | ||
4904 | { | |
d12307c1 | 4905 | struct block_symbol info; |
4c4b4cd2 | 4906 | |
d12307c1 | 4907 | info.symbol = sym; |
4c4b4cd2 | 4908 | info.block = block; |
d12307c1 | 4909 | obstack_grow (obstackp, &info, sizeof (struct block_symbol)); |
4c4b4cd2 PH |
4910 | } |
4911 | } | |
4912 | ||
d12307c1 PMR |
4913 | /* Number of block_symbol structures currently collected in current vector in |
4914 | OBSTACKP. */ | |
4c4b4cd2 | 4915 | |
76a01679 JB |
4916 | static int |
4917 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 | 4918 | { |
d12307c1 | 4919 | return obstack_object_size (obstackp) / sizeof (struct block_symbol); |
4c4b4cd2 PH |
4920 | } |
4921 | ||
d12307c1 PMR |
4922 | /* Vector of block_symbol structures currently collected in current vector in |
4923 | OBSTACKP. If FINISH, close off the vector and return its final address. */ | |
4c4b4cd2 | 4924 | |
d12307c1 | 4925 | static struct block_symbol * |
4c4b4cd2 PH |
4926 | defns_collected (struct obstack *obstackp, int finish) |
4927 | { | |
4928 | if (finish) | |
224c3ddb | 4929 | return (struct block_symbol *) obstack_finish (obstackp); |
4c4b4cd2 | 4930 | else |
d12307c1 | 4931 | return (struct block_symbol *) obstack_base (obstackp); |
4c4b4cd2 PH |
4932 | } |
4933 | ||
7c7b6655 TT |
4934 | /* Return a bound minimal symbol matching NAME according to Ada |
4935 | decoding rules. Returns an invalid symbol if there is no such | |
4936 | minimal symbol. Names prefixed with "standard__" are handled | |
4937 | specially: "standard__" is first stripped off, and only static and | |
4938 | global symbols are searched. */ | |
4c4b4cd2 | 4939 | |
7c7b6655 | 4940 | struct bound_minimal_symbol |
96d887e8 | 4941 | ada_lookup_simple_minsym (const char *name) |
4c4b4cd2 | 4942 | { |
7c7b6655 | 4943 | struct bound_minimal_symbol result; |
4c4b4cd2 | 4944 | struct objfile *objfile; |
96d887e8 | 4945 | struct minimal_symbol *msymbol; |
4c4b4cd2 | 4946 | |
7c7b6655 TT |
4947 | memset (&result, 0, sizeof (result)); |
4948 | ||
b5ec771e PA |
4949 | symbol_name_match_type match_type = name_match_type_from_name (name); |
4950 | lookup_name_info lookup_name (name, match_type); | |
4951 | ||
4952 | symbol_name_matcher_ftype *match_name | |
4953 | = ada_get_symbol_name_matcher (lookup_name); | |
4c4b4cd2 | 4954 | |
96d887e8 PH |
4955 | ALL_MSYMBOLS (objfile, msymbol) |
4956 | { | |
b5ec771e | 4957 | if (match_name (MSYMBOL_LINKAGE_NAME (msymbol), lookup_name, NULL) |
96d887e8 | 4958 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) |
7c7b6655 TT |
4959 | { |
4960 | result.minsym = msymbol; | |
4961 | result.objfile = objfile; | |
4962 | break; | |
4963 | } | |
96d887e8 | 4964 | } |
4c4b4cd2 | 4965 | |
7c7b6655 | 4966 | return result; |
96d887e8 | 4967 | } |
4c4b4cd2 | 4968 | |
96d887e8 PH |
4969 | /* For all subprograms that statically enclose the subprogram of the |
4970 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4971 | and their blocks to the list of data in OBSTACKP, as for | |
48b78332 JB |
4972 | ada_add_block_symbols (q.v.). If WILD_MATCH_P, treat as NAME |
4973 | with a wildcard prefix. */ | |
4c4b4cd2 | 4974 | |
96d887e8 PH |
4975 | static void |
4976 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
b5ec771e PA |
4977 | const lookup_name_info &lookup_name, |
4978 | domain_enum domain) | |
96d887e8 | 4979 | { |
96d887e8 | 4980 | } |
14f9c5c9 | 4981 | |
96d887e8 PH |
4982 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4983 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4984 | |
96d887e8 PH |
4985 | static int |
4986 | is_nondebugging_type (struct type *type) | |
4987 | { | |
0d5cff50 | 4988 | const char *name = ada_type_name (type); |
5b4ee69b | 4989 | |
96d887e8 PH |
4990 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); |
4991 | } | |
4c4b4cd2 | 4992 | |
8f17729f JB |
4993 | /* Return nonzero if TYPE1 and TYPE2 are two enumeration types |
4994 | that are deemed "identical" for practical purposes. | |
4995 | ||
4996 | This function assumes that TYPE1 and TYPE2 are both TYPE_CODE_ENUM | |
4997 | types and that their number of enumerals is identical (in other | |
4998 | words, TYPE_NFIELDS (type1) == TYPE_NFIELDS (type2)). */ | |
4999 | ||
5000 | static int | |
5001 | ada_identical_enum_types_p (struct type *type1, struct type *type2) | |
5002 | { | |
5003 | int i; | |
5004 | ||
5005 | /* The heuristic we use here is fairly conservative. We consider | |
5006 | that 2 enumerate types are identical if they have the same | |
5007 | number of enumerals and that all enumerals have the same | |
5008 | underlying value and name. */ | |
5009 | ||
5010 | /* All enums in the type should have an identical underlying value. */ | |
5011 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
14e75d8e | 5012 | if (TYPE_FIELD_ENUMVAL (type1, i) != TYPE_FIELD_ENUMVAL (type2, i)) |
8f17729f JB |
5013 | return 0; |
5014 | ||
5015 | /* All enumerals should also have the same name (modulo any numerical | |
5016 | suffix). */ | |
5017 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
5018 | { | |
0d5cff50 DE |
5019 | const char *name_1 = TYPE_FIELD_NAME (type1, i); |
5020 | const char *name_2 = TYPE_FIELD_NAME (type2, i); | |
8f17729f JB |
5021 | int len_1 = strlen (name_1); |
5022 | int len_2 = strlen (name_2); | |
5023 | ||
5024 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type1, i), &len_1); | |
5025 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type2, i), &len_2); | |
5026 | if (len_1 != len_2 | |
5027 | || strncmp (TYPE_FIELD_NAME (type1, i), | |
5028 | TYPE_FIELD_NAME (type2, i), | |
5029 | len_1) != 0) | |
5030 | return 0; | |
5031 | } | |
5032 | ||
5033 | return 1; | |
5034 | } | |
5035 | ||
5036 | /* Return nonzero if all the symbols in SYMS are all enumeral symbols | |
5037 | that are deemed "identical" for practical purposes. Sometimes, | |
5038 | enumerals are not strictly identical, but their types are so similar | |
5039 | that they can be considered identical. | |
5040 | ||
5041 | For instance, consider the following code: | |
5042 | ||
5043 | type Color is (Black, Red, Green, Blue, White); | |
5044 | type RGB_Color is new Color range Red .. Blue; | |
5045 | ||
5046 | Type RGB_Color is a subrange of an implicit type which is a copy | |
5047 | of type Color. If we call that implicit type RGB_ColorB ("B" is | |
5048 | for "Base Type"), then type RGB_ColorB is a copy of type Color. | |
5049 | As a result, when an expression references any of the enumeral | |
5050 | by name (Eg. "print green"), the expression is technically | |
5051 | ambiguous and the user should be asked to disambiguate. But | |
5052 | doing so would only hinder the user, since it wouldn't matter | |
5053 | what choice he makes, the outcome would always be the same. | |
5054 | So, for practical purposes, we consider them as the same. */ | |
5055 | ||
5056 | static int | |
d12307c1 | 5057 | symbols_are_identical_enums (struct block_symbol *syms, int nsyms) |
8f17729f JB |
5058 | { |
5059 | int i; | |
5060 | ||
5061 | /* Before performing a thorough comparison check of each type, | |
5062 | we perform a series of inexpensive checks. We expect that these | |
5063 | checks will quickly fail in the vast majority of cases, and thus | |
5064 | help prevent the unnecessary use of a more expensive comparison. | |
5065 | Said comparison also expects us to make some of these checks | |
5066 | (see ada_identical_enum_types_p). */ | |
5067 | ||
5068 | /* Quick check: All symbols should have an enum type. */ | |
5069 | for (i = 0; i < nsyms; i++) | |
d12307c1 | 5070 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].symbol)) != TYPE_CODE_ENUM) |
8f17729f JB |
5071 | return 0; |
5072 | ||
5073 | /* Quick check: They should all have the same value. */ | |
5074 | for (i = 1; i < nsyms; i++) | |
d12307c1 | 5075 | if (SYMBOL_VALUE (syms[i].symbol) != SYMBOL_VALUE (syms[0].symbol)) |
8f17729f JB |
5076 | return 0; |
5077 | ||
5078 | /* Quick check: They should all have the same number of enumerals. */ | |
5079 | for (i = 1; i < nsyms; i++) | |
d12307c1 PMR |
5080 | if (TYPE_NFIELDS (SYMBOL_TYPE (syms[i].symbol)) |
5081 | != TYPE_NFIELDS (SYMBOL_TYPE (syms[0].symbol))) | |
8f17729f JB |
5082 | return 0; |
5083 | ||
5084 | /* All the sanity checks passed, so we might have a set of | |
5085 | identical enumeration types. Perform a more complete | |
5086 | comparison of the type of each symbol. */ | |
5087 | for (i = 1; i < nsyms; i++) | |
d12307c1 PMR |
5088 | if (!ada_identical_enum_types_p (SYMBOL_TYPE (syms[i].symbol), |
5089 | SYMBOL_TYPE (syms[0].symbol))) | |
8f17729f JB |
5090 | return 0; |
5091 | ||
5092 | return 1; | |
5093 | } | |
5094 | ||
96d887e8 PH |
5095 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
5096 | duplicate other symbols in the list (The only case I know of where | |
5097 | this happens is when object files containing stabs-in-ecoff are | |
5098 | linked with files containing ordinary ecoff debugging symbols (or no | |
5099 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
5100 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 5101 | |
96d887e8 | 5102 | static int |
d12307c1 | 5103 | remove_extra_symbols (struct block_symbol *syms, int nsyms) |
96d887e8 PH |
5104 | { |
5105 | int i, j; | |
4c4b4cd2 | 5106 | |
8f17729f JB |
5107 | /* We should never be called with less than 2 symbols, as there |
5108 | cannot be any extra symbol in that case. But it's easy to | |
5109 | handle, since we have nothing to do in that case. */ | |
5110 | if (nsyms < 2) | |
5111 | return nsyms; | |
5112 | ||
96d887e8 PH |
5113 | i = 0; |
5114 | while (i < nsyms) | |
5115 | { | |
a35ddb44 | 5116 | int remove_p = 0; |
339c13b6 JB |
5117 | |
5118 | /* If two symbols have the same name and one of them is a stub type, | |
5119 | the get rid of the stub. */ | |
5120 | ||
d12307c1 PMR |
5121 | if (TYPE_STUB (SYMBOL_TYPE (syms[i].symbol)) |
5122 | && SYMBOL_LINKAGE_NAME (syms[i].symbol) != NULL) | |
339c13b6 JB |
5123 | { |
5124 | for (j = 0; j < nsyms; j++) | |
5125 | { | |
5126 | if (j != i | |
d12307c1 PMR |
5127 | && !TYPE_STUB (SYMBOL_TYPE (syms[j].symbol)) |
5128 | && SYMBOL_LINKAGE_NAME (syms[j].symbol) != NULL | |
5129 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].symbol), | |
5130 | SYMBOL_LINKAGE_NAME (syms[j].symbol)) == 0) | |
a35ddb44 | 5131 | remove_p = 1; |
339c13b6 JB |
5132 | } |
5133 | } | |
5134 | ||
5135 | /* Two symbols with the same name, same class and same address | |
5136 | should be identical. */ | |
5137 | ||
d12307c1 PMR |
5138 | else if (SYMBOL_LINKAGE_NAME (syms[i].symbol) != NULL |
5139 | && SYMBOL_CLASS (syms[i].symbol) == LOC_STATIC | |
5140 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].symbol))) | |
96d887e8 PH |
5141 | { |
5142 | for (j = 0; j < nsyms; j += 1) | |
5143 | { | |
5144 | if (i != j | |
d12307c1 PMR |
5145 | && SYMBOL_LINKAGE_NAME (syms[j].symbol) != NULL |
5146 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].symbol), | |
5147 | SYMBOL_LINKAGE_NAME (syms[j].symbol)) == 0 | |
5148 | && SYMBOL_CLASS (syms[i].symbol) | |
5149 | == SYMBOL_CLASS (syms[j].symbol) | |
5150 | && SYMBOL_VALUE_ADDRESS (syms[i].symbol) | |
5151 | == SYMBOL_VALUE_ADDRESS (syms[j].symbol)) | |
a35ddb44 | 5152 | remove_p = 1; |
4c4b4cd2 | 5153 | } |
4c4b4cd2 | 5154 | } |
339c13b6 | 5155 | |
a35ddb44 | 5156 | if (remove_p) |
339c13b6 JB |
5157 | { |
5158 | for (j = i + 1; j < nsyms; j += 1) | |
5159 | syms[j - 1] = syms[j]; | |
5160 | nsyms -= 1; | |
5161 | } | |
5162 | ||
96d887e8 | 5163 | i += 1; |
14f9c5c9 | 5164 | } |
8f17729f JB |
5165 | |
5166 | /* If all the remaining symbols are identical enumerals, then | |
5167 | just keep the first one and discard the rest. | |
5168 | ||
5169 | Unlike what we did previously, we do not discard any entry | |
5170 | unless they are ALL identical. This is because the symbol | |
5171 | comparison is not a strict comparison, but rather a practical | |
5172 | comparison. If all symbols are considered identical, then | |
5173 | we can just go ahead and use the first one and discard the rest. | |
5174 | But if we cannot reduce the list to a single element, we have | |
5175 | to ask the user to disambiguate anyways. And if we have to | |
5176 | present a multiple-choice menu, it's less confusing if the list | |
5177 | isn't missing some choices that were identical and yet distinct. */ | |
5178 | if (symbols_are_identical_enums (syms, nsyms)) | |
5179 | nsyms = 1; | |
5180 | ||
96d887e8 | 5181 | return nsyms; |
14f9c5c9 AS |
5182 | } |
5183 | ||
96d887e8 PH |
5184 | /* Given a type that corresponds to a renaming entity, use the type name |
5185 | to extract the scope (package name or function name, fully qualified, | |
5186 | and following the GNAT encoding convention) where this renaming has been | |
5187 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 5188 | |
96d887e8 PH |
5189 | static char * |
5190 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 5191 | { |
96d887e8 | 5192 | /* The renaming types adhere to the following convention: |
0963b4bd | 5193 | <scope>__<rename>___<XR extension>. |
96d887e8 PH |
5194 | So, to extract the scope, we search for the "___XR" extension, |
5195 | and then backtrack until we find the first "__". */ | |
76a01679 | 5196 | |
96d887e8 | 5197 | const char *name = type_name_no_tag (renaming_type); |
108d56a4 SM |
5198 | const char *suffix = strstr (name, "___XR"); |
5199 | const char *last; | |
96d887e8 PH |
5200 | int scope_len; |
5201 | char *scope; | |
14f9c5c9 | 5202 | |
96d887e8 PH |
5203 | /* Now, backtrack a bit until we find the first "__". Start looking |
5204 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 5205 | |
96d887e8 PH |
5206 | for (last = suffix - 3; last > name; last--) |
5207 | if (last[0] == '_' && last[1] == '_') | |
5208 | break; | |
76a01679 | 5209 | |
96d887e8 | 5210 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 5211 | |
96d887e8 PH |
5212 | scope_len = last - name; |
5213 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 5214 | |
96d887e8 PH |
5215 | strncpy (scope, name, scope_len); |
5216 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 5217 | |
96d887e8 | 5218 | return scope; |
4c4b4cd2 PH |
5219 | } |
5220 | ||
96d887e8 | 5221 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 5222 | |
96d887e8 PH |
5223 | static int |
5224 | is_package_name (const char *name) | |
4c4b4cd2 | 5225 | { |
96d887e8 PH |
5226 | /* Here, We take advantage of the fact that no symbols are generated |
5227 | for packages, while symbols are generated for each function. | |
5228 | So the condition for NAME represent a package becomes equivalent | |
5229 | to NAME not existing in our list of symbols. There is only one | |
5230 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 5231 | |
96d887e8 | 5232 | char *fun_name; |
76a01679 | 5233 | |
96d887e8 PH |
5234 | /* If it is a function that has not been defined at library level, |
5235 | then we should be able to look it up in the symbols. */ | |
5236 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
5237 | return 0; | |
14f9c5c9 | 5238 | |
96d887e8 PH |
5239 | /* Library-level function names start with "_ada_". See if function |
5240 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 5241 | |
96d887e8 | 5242 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 5243 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
5244 | if (strstr (name, "__") != NULL) |
5245 | return 0; | |
4c4b4cd2 | 5246 | |
b435e160 | 5247 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 5248 | |
96d887e8 PH |
5249 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
5250 | } | |
14f9c5c9 | 5251 | |
96d887e8 | 5252 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 5253 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 5254 | |
96d887e8 | 5255 | static int |
0d5cff50 | 5256 | old_renaming_is_invisible (const struct symbol *sym, const char *function_name) |
96d887e8 | 5257 | { |
aeb5907d | 5258 | char *scope; |
1509e573 | 5259 | struct cleanup *old_chain; |
aeb5907d JB |
5260 | |
5261 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
5262 | return 0; | |
5263 | ||
5264 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
1509e573 | 5265 | old_chain = make_cleanup (xfree, scope); |
14f9c5c9 | 5266 | |
96d887e8 PH |
5267 | /* If the rename has been defined in a package, then it is visible. */ |
5268 | if (is_package_name (scope)) | |
1509e573 JB |
5269 | { |
5270 | do_cleanups (old_chain); | |
5271 | return 0; | |
5272 | } | |
14f9c5c9 | 5273 | |
96d887e8 PH |
5274 | /* Check that the rename is in the current function scope by checking |
5275 | that its name starts with SCOPE. */ | |
76a01679 | 5276 | |
96d887e8 PH |
5277 | /* If the function name starts with "_ada_", it means that it is |
5278 | a library-level function. Strip this prefix before doing the | |
5279 | comparison, as the encoding for the renaming does not contain | |
5280 | this prefix. */ | |
61012eef | 5281 | if (startswith (function_name, "_ada_")) |
96d887e8 | 5282 | function_name += 5; |
f26caa11 | 5283 | |
1509e573 | 5284 | { |
61012eef | 5285 | int is_invisible = !startswith (function_name, scope); |
1509e573 JB |
5286 | |
5287 | do_cleanups (old_chain); | |
5288 | return is_invisible; | |
5289 | } | |
f26caa11 PH |
5290 | } |
5291 | ||
aeb5907d JB |
5292 | /* Remove entries from SYMS that corresponds to a renaming entity that |
5293 | is not visible from the function associated with CURRENT_BLOCK or | |
5294 | that is superfluous due to the presence of more specific renaming | |
5295 | information. Places surviving symbols in the initial entries of | |
5296 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
5297 | |
5298 | Rationale: | |
aeb5907d JB |
5299 | First, in cases where an object renaming is implemented as a |
5300 | reference variable, GNAT may produce both the actual reference | |
5301 | variable and the renaming encoding. In this case, we discard the | |
5302 | latter. | |
5303 | ||
5304 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
5305 | entity. Unfortunately, STABS currently does not support the definition |
5306 | of types that are local to a given lexical block, so all renamings types | |
5307 | are emitted at library level. As a consequence, if an application | |
5308 | contains two renaming entities using the same name, and a user tries to | |
5309 | print the value of one of these entities, the result of the ada symbol | |
5310 | lookup will also contain the wrong renaming type. | |
f26caa11 | 5311 | |
96d887e8 PH |
5312 | This function partially covers for this limitation by attempting to |
5313 | remove from the SYMS list renaming symbols that should be visible | |
5314 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
5315 | method with the current information available. The implementation | |
5316 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
5317 | ||
5318 | - When the user tries to print a rename in a function while there | |
5319 | is another rename entity defined in a package: Normally, the | |
5320 | rename in the function has precedence over the rename in the | |
5321 | package, so the latter should be removed from the list. This is | |
5322 | currently not the case. | |
5323 | ||
5324 | - This function will incorrectly remove valid renames if | |
5325 | the CURRENT_BLOCK corresponds to a function which symbol name | |
5326 | has been changed by an "Export" pragma. As a consequence, | |
5327 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 5328 | |
14f9c5c9 | 5329 | static int |
d12307c1 | 5330 | remove_irrelevant_renamings (struct block_symbol *syms, |
aeb5907d | 5331 | int nsyms, const struct block *current_block) |
4c4b4cd2 PH |
5332 | { |
5333 | struct symbol *current_function; | |
0d5cff50 | 5334 | const char *current_function_name; |
4c4b4cd2 | 5335 | int i; |
aeb5907d JB |
5336 | int is_new_style_renaming; |
5337 | ||
5338 | /* If there is both a renaming foo___XR... encoded as a variable and | |
5339 | a simple variable foo in the same block, discard the latter. | |
0963b4bd | 5340 | First, zero out such symbols, then compress. */ |
aeb5907d JB |
5341 | is_new_style_renaming = 0; |
5342 | for (i = 0; i < nsyms; i += 1) | |
5343 | { | |
d12307c1 | 5344 | struct symbol *sym = syms[i].symbol; |
270140bd | 5345 | const struct block *block = syms[i].block; |
aeb5907d JB |
5346 | const char *name; |
5347 | const char *suffix; | |
5348 | ||
5349 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5350 | continue; | |
5351 | name = SYMBOL_LINKAGE_NAME (sym); | |
5352 | suffix = strstr (name, "___XR"); | |
5353 | ||
5354 | if (suffix != NULL) | |
5355 | { | |
5356 | int name_len = suffix - name; | |
5357 | int j; | |
5b4ee69b | 5358 | |
aeb5907d JB |
5359 | is_new_style_renaming = 1; |
5360 | for (j = 0; j < nsyms; j += 1) | |
d12307c1 PMR |
5361 | if (i != j && syms[j].symbol != NULL |
5362 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].symbol), | |
aeb5907d JB |
5363 | name_len) == 0 |
5364 | && block == syms[j].block) | |
d12307c1 | 5365 | syms[j].symbol = NULL; |
aeb5907d JB |
5366 | } |
5367 | } | |
5368 | if (is_new_style_renaming) | |
5369 | { | |
5370 | int j, k; | |
5371 | ||
5372 | for (j = k = 0; j < nsyms; j += 1) | |
d12307c1 | 5373 | if (syms[j].symbol != NULL) |
aeb5907d JB |
5374 | { |
5375 | syms[k] = syms[j]; | |
5376 | k += 1; | |
5377 | } | |
5378 | return k; | |
5379 | } | |
4c4b4cd2 PH |
5380 | |
5381 | /* Extract the function name associated to CURRENT_BLOCK. | |
5382 | Abort if unable to do so. */ | |
76a01679 | 5383 | |
4c4b4cd2 PH |
5384 | if (current_block == NULL) |
5385 | return nsyms; | |
76a01679 | 5386 | |
7f0df278 | 5387 | current_function = block_linkage_function (current_block); |
4c4b4cd2 PH |
5388 | if (current_function == NULL) |
5389 | return nsyms; | |
5390 | ||
5391 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
5392 | if (current_function_name == NULL) | |
5393 | return nsyms; | |
5394 | ||
5395 | /* Check each of the symbols, and remove it from the list if it is | |
5396 | a type corresponding to a renaming that is out of the scope of | |
5397 | the current block. */ | |
5398 | ||
5399 | i = 0; | |
5400 | while (i < nsyms) | |
5401 | { | |
d12307c1 | 5402 | if (ada_parse_renaming (syms[i].symbol, NULL, NULL, NULL) |
aeb5907d | 5403 | == ADA_OBJECT_RENAMING |
d12307c1 | 5404 | && old_renaming_is_invisible (syms[i].symbol, current_function_name)) |
4c4b4cd2 PH |
5405 | { |
5406 | int j; | |
5b4ee69b | 5407 | |
aeb5907d | 5408 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 5409 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
5410 | nsyms -= 1; |
5411 | } | |
5412 | else | |
5413 | i += 1; | |
5414 | } | |
5415 | ||
5416 | return nsyms; | |
5417 | } | |
5418 | ||
339c13b6 JB |
5419 | /* Add to OBSTACKP all symbols from BLOCK (and its super-blocks) |
5420 | whose name and domain match NAME and DOMAIN respectively. | |
5421 | If no match was found, then extend the search to "enclosing" | |
5422 | routines (in other words, if we're inside a nested function, | |
5423 | search the symbols defined inside the enclosing functions). | |
d0a8ab18 JB |
5424 | If WILD_MATCH_P is nonzero, perform the naming matching in |
5425 | "wild" mode (see function "wild_match" for more info). | |
339c13b6 JB |
5426 | |
5427 | Note: This function assumes that OBSTACKP has 0 (zero) element in it. */ | |
5428 | ||
5429 | static void | |
b5ec771e PA |
5430 | ada_add_local_symbols (struct obstack *obstackp, |
5431 | const lookup_name_info &lookup_name, | |
5432 | const struct block *block, domain_enum domain) | |
339c13b6 JB |
5433 | { |
5434 | int block_depth = 0; | |
5435 | ||
5436 | while (block != NULL) | |
5437 | { | |
5438 | block_depth += 1; | |
b5ec771e | 5439 | ada_add_block_symbols (obstackp, block, lookup_name, domain, NULL); |
339c13b6 JB |
5440 | |
5441 | /* If we found a non-function match, assume that's the one. */ | |
5442 | if (is_nonfunction (defns_collected (obstackp, 0), | |
5443 | num_defns_collected (obstackp))) | |
5444 | return; | |
5445 | ||
5446 | block = BLOCK_SUPERBLOCK (block); | |
5447 | } | |
5448 | ||
5449 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
5450 | enclosing subprogram. */ | |
5451 | if (num_defns_collected (obstackp) == 0 && block_depth > 2) | |
b5ec771e | 5452 | add_symbols_from_enclosing_procs (obstackp, lookup_name, domain); |
339c13b6 JB |
5453 | } |
5454 | ||
ccefe4c4 | 5455 | /* An object of this type is used as the user_data argument when |
40658b94 | 5456 | calling the map_matching_symbols method. */ |
ccefe4c4 | 5457 | |
40658b94 | 5458 | struct match_data |
ccefe4c4 | 5459 | { |
40658b94 | 5460 | struct objfile *objfile; |
ccefe4c4 | 5461 | struct obstack *obstackp; |
40658b94 PH |
5462 | struct symbol *arg_sym; |
5463 | int found_sym; | |
ccefe4c4 TT |
5464 | }; |
5465 | ||
22cee43f | 5466 | /* A callback for add_nonlocal_symbols that adds SYM, found in BLOCK, |
40658b94 PH |
5467 | to a list of symbols. DATA0 is a pointer to a struct match_data * |
5468 | containing the obstack that collects the symbol list, the file that SYM | |
5469 | must come from, a flag indicating whether a non-argument symbol has | |
5470 | been found in the current block, and the last argument symbol | |
5471 | passed in SYM within the current block (if any). When SYM is null, | |
5472 | marking the end of a block, the argument symbol is added if no | |
5473 | other has been found. */ | |
ccefe4c4 | 5474 | |
40658b94 PH |
5475 | static int |
5476 | aux_add_nonlocal_symbols (struct block *block, struct symbol *sym, void *data0) | |
ccefe4c4 | 5477 | { |
40658b94 PH |
5478 | struct match_data *data = (struct match_data *) data0; |
5479 | ||
5480 | if (sym == NULL) | |
5481 | { | |
5482 | if (!data->found_sym && data->arg_sym != NULL) | |
5483 | add_defn_to_vec (data->obstackp, | |
5484 | fixup_symbol_section (data->arg_sym, data->objfile), | |
5485 | block); | |
5486 | data->found_sym = 0; | |
5487 | data->arg_sym = NULL; | |
5488 | } | |
5489 | else | |
5490 | { | |
5491 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) | |
5492 | return 0; | |
5493 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
5494 | data->arg_sym = sym; | |
5495 | else | |
5496 | { | |
5497 | data->found_sym = 1; | |
5498 | add_defn_to_vec (data->obstackp, | |
5499 | fixup_symbol_section (sym, data->objfile), | |
5500 | block); | |
5501 | } | |
5502 | } | |
5503 | return 0; | |
5504 | } | |
5505 | ||
b5ec771e PA |
5506 | /* Helper for add_nonlocal_symbols. Find symbols in DOMAIN which are |
5507 | targeted by renamings matching LOOKUP_NAME in BLOCK. Add these | |
5508 | symbols to OBSTACKP. Return whether we found such symbols. */ | |
22cee43f PMR |
5509 | |
5510 | static int | |
5511 | ada_add_block_renamings (struct obstack *obstackp, | |
5512 | const struct block *block, | |
b5ec771e PA |
5513 | const lookup_name_info &lookup_name, |
5514 | domain_enum domain) | |
22cee43f PMR |
5515 | { |
5516 | struct using_direct *renaming; | |
5517 | int defns_mark = num_defns_collected (obstackp); | |
5518 | ||
b5ec771e PA |
5519 | symbol_name_matcher_ftype *name_match |
5520 | = ada_get_symbol_name_matcher (lookup_name); | |
5521 | ||
22cee43f PMR |
5522 | for (renaming = block_using (block); |
5523 | renaming != NULL; | |
5524 | renaming = renaming->next) | |
5525 | { | |
5526 | const char *r_name; | |
22cee43f PMR |
5527 | |
5528 | /* Avoid infinite recursions: skip this renaming if we are actually | |
5529 | already traversing it. | |
5530 | ||
5531 | Currently, symbol lookup in Ada don't use the namespace machinery from | |
5532 | C++/Fortran support: skip namespace imports that use them. */ | |
5533 | if (renaming->searched | |
5534 | || (renaming->import_src != NULL | |
5535 | && renaming->import_src[0] != '\0') | |
5536 | || (renaming->import_dest != NULL | |
5537 | && renaming->import_dest[0] != '\0')) | |
5538 | continue; | |
5539 | renaming->searched = 1; | |
5540 | ||
5541 | /* TODO: here, we perform another name-based symbol lookup, which can | |
5542 | pull its own multiple overloads. In theory, we should be able to do | |
5543 | better in this case since, in DWARF, DW_AT_import is a DIE reference, | |
5544 | not a simple name. But in order to do this, we would need to enhance | |
5545 | the DWARF reader to associate a symbol to this renaming, instead of a | |
5546 | name. So, for now, we do something simpler: re-use the C++/Fortran | |
5547 | namespace machinery. */ | |
5548 | r_name = (renaming->alias != NULL | |
5549 | ? renaming->alias | |
5550 | : renaming->declaration); | |
b5ec771e PA |
5551 | if (name_match (r_name, lookup_name, NULL)) |
5552 | { | |
5553 | lookup_name_info decl_lookup_name (renaming->declaration, | |
5554 | lookup_name.match_type ()); | |
5555 | ada_add_all_symbols (obstackp, block, decl_lookup_name, domain, | |
5556 | 1, NULL); | |
5557 | } | |
22cee43f PMR |
5558 | renaming->searched = 0; |
5559 | } | |
5560 | return num_defns_collected (obstackp) != defns_mark; | |
5561 | } | |
5562 | ||
db230ce3 JB |
5563 | /* Implements compare_names, but only applying the comparision using |
5564 | the given CASING. */ | |
5b4ee69b | 5565 | |
40658b94 | 5566 | static int |
db230ce3 JB |
5567 | compare_names_with_case (const char *string1, const char *string2, |
5568 | enum case_sensitivity casing) | |
40658b94 PH |
5569 | { |
5570 | while (*string1 != '\0' && *string2 != '\0') | |
5571 | { | |
db230ce3 JB |
5572 | char c1, c2; |
5573 | ||
40658b94 PH |
5574 | if (isspace (*string1) || isspace (*string2)) |
5575 | return strcmp_iw_ordered (string1, string2); | |
db230ce3 JB |
5576 | |
5577 | if (casing == case_sensitive_off) | |
5578 | { | |
5579 | c1 = tolower (*string1); | |
5580 | c2 = tolower (*string2); | |
5581 | } | |
5582 | else | |
5583 | { | |
5584 | c1 = *string1; | |
5585 | c2 = *string2; | |
5586 | } | |
5587 | if (c1 != c2) | |
40658b94 | 5588 | break; |
db230ce3 | 5589 | |
40658b94 PH |
5590 | string1 += 1; |
5591 | string2 += 1; | |
5592 | } | |
db230ce3 | 5593 | |
40658b94 PH |
5594 | switch (*string1) |
5595 | { | |
5596 | case '(': | |
5597 | return strcmp_iw_ordered (string1, string2); | |
5598 | case '_': | |
5599 | if (*string2 == '\0') | |
5600 | { | |
052874e8 | 5601 | if (is_name_suffix (string1)) |
40658b94 PH |
5602 | return 0; |
5603 | else | |
1a1d5513 | 5604 | return 1; |
40658b94 | 5605 | } |
dbb8534f | 5606 | /* FALLTHROUGH */ |
40658b94 PH |
5607 | default: |
5608 | if (*string2 == '(') | |
5609 | return strcmp_iw_ordered (string1, string2); | |
5610 | else | |
db230ce3 JB |
5611 | { |
5612 | if (casing == case_sensitive_off) | |
5613 | return tolower (*string1) - tolower (*string2); | |
5614 | else | |
5615 | return *string1 - *string2; | |
5616 | } | |
40658b94 | 5617 | } |
ccefe4c4 TT |
5618 | } |
5619 | ||
db230ce3 JB |
5620 | /* Compare STRING1 to STRING2, with results as for strcmp. |
5621 | Compatible with strcmp_iw_ordered in that... | |
5622 | ||
5623 | strcmp_iw_ordered (STRING1, STRING2) <= 0 | |
5624 | ||
5625 | ... implies... | |
5626 | ||
5627 | compare_names (STRING1, STRING2) <= 0 | |
5628 | ||
5629 | (they may differ as to what symbols compare equal). */ | |
5630 | ||
5631 | static int | |
5632 | compare_names (const char *string1, const char *string2) | |
5633 | { | |
5634 | int result; | |
5635 | ||
5636 | /* Similar to what strcmp_iw_ordered does, we need to perform | |
5637 | a case-insensitive comparison first, and only resort to | |
5638 | a second, case-sensitive, comparison if the first one was | |
5639 | not sufficient to differentiate the two strings. */ | |
5640 | ||
5641 | result = compare_names_with_case (string1, string2, case_sensitive_off); | |
5642 | if (result == 0) | |
5643 | result = compare_names_with_case (string1, string2, case_sensitive_on); | |
5644 | ||
5645 | return result; | |
5646 | } | |
5647 | ||
b5ec771e PA |
5648 | /* Convenience function to get at the Ada encoded lookup name for |
5649 | LOOKUP_NAME, as a C string. */ | |
5650 | ||
5651 | static const char * | |
5652 | ada_lookup_name (const lookup_name_info &lookup_name) | |
5653 | { | |
5654 | return lookup_name.ada ().lookup_name ().c_str (); | |
5655 | } | |
5656 | ||
339c13b6 | 5657 | /* Add to OBSTACKP all non-local symbols whose name and domain match |
b5ec771e PA |
5658 | LOOKUP_NAME and DOMAIN respectively. The search is performed on |
5659 | GLOBAL_BLOCK symbols if GLOBAL is non-zero, or on STATIC_BLOCK | |
5660 | symbols otherwise. */ | |
339c13b6 JB |
5661 | |
5662 | static void | |
b5ec771e PA |
5663 | add_nonlocal_symbols (struct obstack *obstackp, |
5664 | const lookup_name_info &lookup_name, | |
5665 | domain_enum domain, int global) | |
339c13b6 JB |
5666 | { |
5667 | struct objfile *objfile; | |
22cee43f | 5668 | struct compunit_symtab *cu; |
40658b94 | 5669 | struct match_data data; |
339c13b6 | 5670 | |
6475f2fe | 5671 | memset (&data, 0, sizeof data); |
ccefe4c4 | 5672 | data.obstackp = obstackp; |
339c13b6 | 5673 | |
b5ec771e PA |
5674 | bool is_wild_match = lookup_name.ada ().wild_match_p (); |
5675 | ||
ccefe4c4 | 5676 | ALL_OBJFILES (objfile) |
40658b94 PH |
5677 | { |
5678 | data.objfile = objfile; | |
5679 | ||
5680 | if (is_wild_match) | |
b5ec771e PA |
5681 | objfile->sf->qf->map_matching_symbols (objfile, lookup_name.name ().c_str (), |
5682 | domain, global, | |
4186eb54 | 5683 | aux_add_nonlocal_symbols, &data, |
b5ec771e PA |
5684 | symbol_name_match_type::WILD, |
5685 | NULL); | |
40658b94 | 5686 | else |
b5ec771e PA |
5687 | objfile->sf->qf->map_matching_symbols (objfile, lookup_name.name ().c_str (), |
5688 | domain, global, | |
4186eb54 | 5689 | aux_add_nonlocal_symbols, &data, |
b5ec771e PA |
5690 | symbol_name_match_type::FULL, |
5691 | compare_names); | |
22cee43f PMR |
5692 | |
5693 | ALL_OBJFILE_COMPUNITS (objfile, cu) | |
5694 | { | |
5695 | const struct block *global_block | |
5696 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cu), GLOBAL_BLOCK); | |
5697 | ||
b5ec771e PA |
5698 | if (ada_add_block_renamings (obstackp, global_block, lookup_name, |
5699 | domain)) | |
22cee43f PMR |
5700 | data.found_sym = 1; |
5701 | } | |
40658b94 PH |
5702 | } |
5703 | ||
5704 | if (num_defns_collected (obstackp) == 0 && global && !is_wild_match) | |
5705 | { | |
b5ec771e PA |
5706 | const char *name = ada_lookup_name (lookup_name); |
5707 | std::string name1 = std::string ("<_ada_") + name + '>'; | |
5708 | ||
40658b94 PH |
5709 | ALL_OBJFILES (objfile) |
5710 | { | |
40658b94 | 5711 | data.objfile = objfile; |
b5ec771e PA |
5712 | objfile->sf->qf->map_matching_symbols (objfile, name1.c_str (), |
5713 | domain, global, | |
0963b4bd MS |
5714 | aux_add_nonlocal_symbols, |
5715 | &data, | |
b5ec771e PA |
5716 | symbol_name_match_type::FULL, |
5717 | compare_names); | |
40658b94 PH |
5718 | } |
5719 | } | |
339c13b6 JB |
5720 | } |
5721 | ||
b5ec771e PA |
5722 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if |
5723 | FULL_SEARCH is non-zero, enclosing scope and in global scopes, | |
5724 | returning the number of matches. Add these to OBSTACKP. | |
4eeaa230 | 5725 | |
22cee43f PMR |
5726 | When FULL_SEARCH is non-zero, any non-function/non-enumeral |
5727 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
4c4b4cd2 | 5728 | is the one match returned (no other matches in that or |
d9680e73 | 5729 | enclosing blocks is returned). If there are any matches in or |
22cee43f | 5730 | surrounding BLOCK, then these alone are returned. |
4eeaa230 | 5731 | |
b5ec771e PA |
5732 | Names prefixed with "standard__" are handled specially: |
5733 | "standard__" is first stripped off (by the lookup_name | |
5734 | constructor), and only static and global symbols are searched. | |
14f9c5c9 | 5735 | |
22cee43f PMR |
5736 | If MADE_GLOBAL_LOOKUP_P is non-null, set it before return to whether we had |
5737 | to lookup global symbols. */ | |
5738 | ||
5739 | static void | |
5740 | ada_add_all_symbols (struct obstack *obstackp, | |
5741 | const struct block *block, | |
b5ec771e | 5742 | const lookup_name_info &lookup_name, |
22cee43f PMR |
5743 | domain_enum domain, |
5744 | int full_search, | |
5745 | int *made_global_lookup_p) | |
14f9c5c9 AS |
5746 | { |
5747 | struct symbol *sym; | |
14f9c5c9 | 5748 | |
22cee43f PMR |
5749 | if (made_global_lookup_p) |
5750 | *made_global_lookup_p = 0; | |
339c13b6 JB |
5751 | |
5752 | /* Special case: If the user specifies a symbol name inside package | |
5753 | Standard, do a non-wild matching of the symbol name without | |
5754 | the "standard__" prefix. This was primarily introduced in order | |
5755 | to allow the user to specifically access the standard exceptions | |
5756 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
5757 | is ambiguous (due to the user defining its own Constraint_Error | |
5758 | entity inside its program). */ | |
b5ec771e PA |
5759 | if (lookup_name.ada ().standard_p ()) |
5760 | block = NULL; | |
4c4b4cd2 | 5761 | |
339c13b6 | 5762 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 5763 | |
4eeaa230 DE |
5764 | if (block != NULL) |
5765 | { | |
5766 | if (full_search) | |
b5ec771e | 5767 | ada_add_local_symbols (obstackp, lookup_name, block, domain); |
4eeaa230 DE |
5768 | else |
5769 | { | |
5770 | /* In the !full_search case we're are being called by | |
5771 | ada_iterate_over_symbols, and we don't want to search | |
5772 | superblocks. */ | |
b5ec771e | 5773 | ada_add_block_symbols (obstackp, block, lookup_name, domain, NULL); |
4eeaa230 | 5774 | } |
22cee43f PMR |
5775 | if (num_defns_collected (obstackp) > 0 || !full_search) |
5776 | return; | |
4eeaa230 | 5777 | } |
d2e4a39e | 5778 | |
339c13b6 JB |
5779 | /* No non-global symbols found. Check our cache to see if we have |
5780 | already performed this search before. If we have, then return | |
5781 | the same result. */ | |
5782 | ||
b5ec771e PA |
5783 | if (lookup_cached_symbol (ada_lookup_name (lookup_name), |
5784 | domain, &sym, &block)) | |
4c4b4cd2 PH |
5785 | { |
5786 | if (sym != NULL) | |
b5ec771e | 5787 | add_defn_to_vec (obstackp, sym, block); |
22cee43f | 5788 | return; |
4c4b4cd2 | 5789 | } |
14f9c5c9 | 5790 | |
22cee43f PMR |
5791 | if (made_global_lookup_p) |
5792 | *made_global_lookup_p = 1; | |
b1eedac9 | 5793 | |
339c13b6 JB |
5794 | /* Search symbols from all global blocks. */ |
5795 | ||
b5ec771e | 5796 | add_nonlocal_symbols (obstackp, lookup_name, domain, 1); |
d2e4a39e | 5797 | |
4c4b4cd2 | 5798 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 5799 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 5800 | |
22cee43f | 5801 | if (num_defns_collected (obstackp) == 0) |
b5ec771e | 5802 | add_nonlocal_symbols (obstackp, lookup_name, domain, 0); |
22cee43f PMR |
5803 | } |
5804 | ||
b5ec771e PA |
5805 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if FULL_SEARCH |
5806 | is non-zero, enclosing scope and in global scopes, returning the number of | |
22cee43f | 5807 | matches. |
ec6a20c2 | 5808 | Sets *RESULTS to point to a newly allocated vector of (SYM,BLOCK) tuples, |
22cee43f | 5809 | indicating the symbols found and the blocks and symbol tables (if |
ec6a20c2 JB |
5810 | any) in which they were found. This vector should be freed when |
5811 | no longer useful. | |
22cee43f PMR |
5812 | |
5813 | When full_search is non-zero, any non-function/non-enumeral | |
5814 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
5815 | is the one match returned (no other matches in that or | |
5816 | enclosing blocks is returned). If there are any matches in or | |
5817 | surrounding BLOCK, then these alone are returned. | |
5818 | ||
5819 | Names prefixed with "standard__" are handled specially: "standard__" | |
5820 | is first stripped off, and only static and global symbols are searched. */ | |
5821 | ||
5822 | static int | |
b5ec771e PA |
5823 | ada_lookup_symbol_list_worker (const lookup_name_info &lookup_name, |
5824 | const struct block *block, | |
22cee43f PMR |
5825 | domain_enum domain, |
5826 | struct block_symbol **results, | |
5827 | int full_search) | |
5828 | { | |
22cee43f PMR |
5829 | int syms_from_global_search; |
5830 | int ndefns; | |
ec6a20c2 JB |
5831 | int results_size; |
5832 | auto_obstack obstack; | |
22cee43f | 5833 | |
ec6a20c2 | 5834 | ada_add_all_symbols (&obstack, block, lookup_name, |
b5ec771e | 5835 | domain, full_search, &syms_from_global_search); |
14f9c5c9 | 5836 | |
ec6a20c2 JB |
5837 | ndefns = num_defns_collected (&obstack); |
5838 | ||
5839 | results_size = obstack_object_size (&obstack); | |
5840 | *results = (struct block_symbol *) malloc (results_size); | |
5841 | memcpy (*results, defns_collected (&obstack, 1), results_size); | |
4c4b4cd2 PH |
5842 | |
5843 | ndefns = remove_extra_symbols (*results, ndefns); | |
5844 | ||
b1eedac9 | 5845 | if (ndefns == 0 && full_search && syms_from_global_search) |
b5ec771e | 5846 | cache_symbol (ada_lookup_name (lookup_name), domain, NULL, NULL); |
14f9c5c9 | 5847 | |
b1eedac9 | 5848 | if (ndefns == 1 && full_search && syms_from_global_search) |
b5ec771e PA |
5849 | cache_symbol (ada_lookup_name (lookup_name), domain, |
5850 | (*results)[0].symbol, (*results)[0].block); | |
14f9c5c9 | 5851 | |
22cee43f | 5852 | ndefns = remove_irrelevant_renamings (*results, ndefns, block); |
ec6a20c2 | 5853 | |
14f9c5c9 AS |
5854 | return ndefns; |
5855 | } | |
5856 | ||
b5ec771e | 5857 | /* Find symbols in DOMAIN matching NAME, in BLOCK and enclosing scope and |
4eeaa230 | 5858 | in global scopes, returning the number of matches, and setting *RESULTS |
ec6a20c2 JB |
5859 | to a newly-allocated vector of (SYM,BLOCK) tuples. This newly-allocated |
5860 | vector should be freed when no longer useful. | |
5861 | ||
4eeaa230 DE |
5862 | See ada_lookup_symbol_list_worker for further details. */ |
5863 | ||
5864 | int | |
b5ec771e | 5865 | ada_lookup_symbol_list (const char *name, const struct block *block, |
d12307c1 | 5866 | domain_enum domain, struct block_symbol **results) |
4eeaa230 | 5867 | { |
b5ec771e PA |
5868 | symbol_name_match_type name_match_type = name_match_type_from_name (name); |
5869 | lookup_name_info lookup_name (name, name_match_type); | |
5870 | ||
5871 | return ada_lookup_symbol_list_worker (lookup_name, block, domain, results, 1); | |
4eeaa230 DE |
5872 | } |
5873 | ||
5874 | /* Implementation of the la_iterate_over_symbols method. */ | |
5875 | ||
5876 | static void | |
14bc53a8 | 5877 | ada_iterate_over_symbols |
b5ec771e PA |
5878 | (const struct block *block, const lookup_name_info &name, |
5879 | domain_enum domain, | |
14bc53a8 | 5880 | gdb::function_view<symbol_found_callback_ftype> callback) |
4eeaa230 DE |
5881 | { |
5882 | int ndefs, i; | |
d12307c1 | 5883 | struct block_symbol *results; |
ec6a20c2 | 5884 | struct cleanup *old_chain; |
4eeaa230 DE |
5885 | |
5886 | ndefs = ada_lookup_symbol_list_worker (name, block, domain, &results, 0); | |
ec6a20c2 JB |
5887 | old_chain = make_cleanup (xfree, results); |
5888 | ||
4eeaa230 DE |
5889 | for (i = 0; i < ndefs; ++i) |
5890 | { | |
14bc53a8 | 5891 | if (!callback (results[i].symbol)) |
4eeaa230 DE |
5892 | break; |
5893 | } | |
ec6a20c2 JB |
5894 | |
5895 | do_cleanups (old_chain); | |
4eeaa230 DE |
5896 | } |
5897 | ||
4e5c77fe JB |
5898 | /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set |
5899 | to 1, but choosing the first symbol found if there are multiple | |
5900 | choices. | |
5901 | ||
5e2336be JB |
5902 | The result is stored in *INFO, which must be non-NULL. |
5903 | If no match is found, INFO->SYM is set to NULL. */ | |
4e5c77fe JB |
5904 | |
5905 | void | |
5906 | ada_lookup_encoded_symbol (const char *name, const struct block *block, | |
fe978cb0 | 5907 | domain_enum domain, |
d12307c1 | 5908 | struct block_symbol *info) |
14f9c5c9 | 5909 | { |
b5ec771e PA |
5910 | /* Since we already have an encoded name, wrap it in '<>' to force a |
5911 | verbatim match. Otherwise, if the name happens to not look like | |
5912 | an encoded name (because it doesn't include a "__"), | |
5913 | ada_lookup_name_info would re-encode/fold it again, and that | |
5914 | would e.g., incorrectly lowercase object renaming names like | |
5915 | "R28b" -> "r28b". */ | |
5916 | std::string verbatim = std::string ("<") + name + '>'; | |
5917 | ||
5e2336be | 5918 | gdb_assert (info != NULL); |
f98fc17b | 5919 | *info = ada_lookup_symbol (verbatim.c_str (), block, domain, NULL); |
4e5c77fe | 5920 | } |
aeb5907d JB |
5921 | |
5922 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
5923 | scope and in global scopes, or NULL if none. NAME is folded and | |
5924 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
0963b4bd | 5925 | choosing the first symbol if there are multiple choices. |
4e5c77fe JB |
5926 | If IS_A_FIELD_OF_THIS is not NULL, it is set to zero. */ |
5927 | ||
d12307c1 | 5928 | struct block_symbol |
aeb5907d | 5929 | ada_lookup_symbol (const char *name, const struct block *block0, |
fe978cb0 | 5930 | domain_enum domain, int *is_a_field_of_this) |
aeb5907d JB |
5931 | { |
5932 | if (is_a_field_of_this != NULL) | |
5933 | *is_a_field_of_this = 0; | |
5934 | ||
f98fc17b PA |
5935 | struct block_symbol *candidates; |
5936 | int n_candidates; | |
5937 | struct cleanup *old_chain; | |
5938 | ||
5939 | n_candidates = ada_lookup_symbol_list (name, block0, domain, &candidates); | |
5940 | old_chain = make_cleanup (xfree, candidates); | |
5941 | ||
5942 | if (n_candidates == 0) | |
5943 | { | |
5944 | do_cleanups (old_chain); | |
5945 | return {}; | |
5946 | } | |
5947 | ||
5948 | block_symbol info = candidates[0]; | |
5949 | info.symbol = fixup_symbol_section (info.symbol, NULL); | |
5950 | ||
5951 | do_cleanups (old_chain); | |
5952 | ||
d12307c1 | 5953 | return info; |
4c4b4cd2 | 5954 | } |
14f9c5c9 | 5955 | |
d12307c1 | 5956 | static struct block_symbol |
f606139a DE |
5957 | ada_lookup_symbol_nonlocal (const struct language_defn *langdef, |
5958 | const char *name, | |
76a01679 | 5959 | const struct block *block, |
21b556f4 | 5960 | const domain_enum domain) |
4c4b4cd2 | 5961 | { |
d12307c1 | 5962 | struct block_symbol sym; |
04dccad0 JB |
5963 | |
5964 | sym = ada_lookup_symbol (name, block_static_block (block), domain, NULL); | |
d12307c1 | 5965 | if (sym.symbol != NULL) |
04dccad0 JB |
5966 | return sym; |
5967 | ||
5968 | /* If we haven't found a match at this point, try the primitive | |
5969 | types. In other languages, this search is performed before | |
5970 | searching for global symbols in order to short-circuit that | |
5971 | global-symbol search if it happens that the name corresponds | |
5972 | to a primitive type. But we cannot do the same in Ada, because | |
5973 | it is perfectly legitimate for a program to declare a type which | |
5974 | has the same name as a standard type. If looking up a type in | |
5975 | that situation, we have traditionally ignored the primitive type | |
5976 | in favor of user-defined types. This is why, unlike most other | |
5977 | languages, we search the primitive types this late and only after | |
5978 | having searched the global symbols without success. */ | |
5979 | ||
5980 | if (domain == VAR_DOMAIN) | |
5981 | { | |
5982 | struct gdbarch *gdbarch; | |
5983 | ||
5984 | if (block == NULL) | |
5985 | gdbarch = target_gdbarch (); | |
5986 | else | |
5987 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
5988 | sym.symbol = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); |
5989 | if (sym.symbol != NULL) | |
04dccad0 JB |
5990 | return sym; |
5991 | } | |
5992 | ||
d12307c1 | 5993 | return (struct block_symbol) {NULL, NULL}; |
14f9c5c9 AS |
5994 | } |
5995 | ||
5996 | ||
4c4b4cd2 PH |
5997 | /* True iff STR is a possible encoded suffix of a normal Ada name |
5998 | that is to be ignored for matching purposes. Suffixes of parallel | |
5999 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 6000 | are given by any of the regular expressions: |
4c4b4cd2 | 6001 | |
babe1480 JB |
6002 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
6003 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
9ac7f98e | 6004 | TKB [subprogram suffix for task bodies] |
babe1480 | 6005 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 6006 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
6007 | |
6008 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
6009 | match is performed. This sequence is used to differentiate homonyms, | |
6010 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 6011 | |
14f9c5c9 | 6012 | static int |
d2e4a39e | 6013 | is_name_suffix (const char *str) |
14f9c5c9 AS |
6014 | { |
6015 | int k; | |
4c4b4cd2 PH |
6016 | const char *matching; |
6017 | const int len = strlen (str); | |
6018 | ||
babe1480 JB |
6019 | /* Skip optional leading __[0-9]+. */ |
6020 | ||
4c4b4cd2 PH |
6021 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
6022 | { | |
babe1480 JB |
6023 | str += 3; |
6024 | while (isdigit (str[0])) | |
6025 | str += 1; | |
4c4b4cd2 | 6026 | } |
babe1480 JB |
6027 | |
6028 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 6029 | |
babe1480 | 6030 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 6031 | { |
babe1480 | 6032 | matching = str + 1; |
4c4b4cd2 PH |
6033 | while (isdigit (matching[0])) |
6034 | matching += 1; | |
6035 | if (matching[0] == '\0') | |
6036 | return 1; | |
6037 | } | |
6038 | ||
6039 | /* ___[0-9]+ */ | |
babe1480 | 6040 | |
4c4b4cd2 PH |
6041 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
6042 | { | |
6043 | matching = str + 3; | |
6044 | while (isdigit (matching[0])) | |
6045 | matching += 1; | |
6046 | if (matching[0] == '\0') | |
6047 | return 1; | |
6048 | } | |
6049 | ||
9ac7f98e JB |
6050 | /* "TKB" suffixes are used for subprograms implementing task bodies. */ |
6051 | ||
6052 | if (strcmp (str, "TKB") == 0) | |
6053 | return 1; | |
6054 | ||
529cad9c PH |
6055 | #if 0 |
6056 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
0963b4bd MS |
6057 | with a N at the end. Unfortunately, the compiler uses the same |
6058 | convention for other internal types it creates. So treating | |
529cad9c | 6059 | all entity names that end with an "N" as a name suffix causes |
0963b4bd MS |
6060 | some regressions. For instance, consider the case of an enumerated |
6061 | type. To support the 'Image attribute, it creates an array whose | |
529cad9c PH |
6062 | name ends with N. |
6063 | Having a single character like this as a suffix carrying some | |
0963b4bd | 6064 | information is a bit risky. Perhaps we should change the encoding |
529cad9c PH |
6065 | to be something like "_N" instead. In the meantime, do not do |
6066 | the following check. */ | |
6067 | /* Protected Object Subprograms */ | |
6068 | if (len == 1 && str [0] == 'N') | |
6069 | return 1; | |
6070 | #endif | |
6071 | ||
6072 | /* _E[0-9]+[bs]$ */ | |
6073 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
6074 | { | |
6075 | matching = str + 3; | |
6076 | while (isdigit (matching[0])) | |
6077 | matching += 1; | |
6078 | if ((matching[0] == 'b' || matching[0] == 's') | |
6079 | && matching [1] == '\0') | |
6080 | return 1; | |
6081 | } | |
6082 | ||
4c4b4cd2 PH |
6083 | /* ??? We should not modify STR directly, as we are doing below. This |
6084 | is fine in this case, but may become problematic later if we find | |
6085 | that this alternative did not work, and want to try matching | |
6086 | another one from the begining of STR. Since we modified it, we | |
6087 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
6088 | if (str[0] == 'X') |
6089 | { | |
6090 | str += 1; | |
d2e4a39e | 6091 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
6092 | { |
6093 | if (str[0] != 'n' && str[0] != 'b') | |
6094 | return 0; | |
6095 | str += 1; | |
6096 | } | |
14f9c5c9 | 6097 | } |
babe1480 | 6098 | |
14f9c5c9 AS |
6099 | if (str[0] == '\000') |
6100 | return 1; | |
babe1480 | 6101 | |
d2e4a39e | 6102 | if (str[0] == '_') |
14f9c5c9 AS |
6103 | { |
6104 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 6105 | return 0; |
d2e4a39e | 6106 | if (str[2] == '_') |
4c4b4cd2 | 6107 | { |
61ee279c PH |
6108 | if (strcmp (str + 3, "JM") == 0) |
6109 | return 1; | |
6110 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
6111 | the LJM suffix in favor of the JM one. But we will | |
6112 | still accept LJM as a valid suffix for a reasonable | |
6113 | amount of time, just to allow ourselves to debug programs | |
6114 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
6115 | if (strcmp (str + 3, "LJM") == 0) |
6116 | return 1; | |
6117 | if (str[3] != 'X') | |
6118 | return 0; | |
1265e4aa JB |
6119 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
6120 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
6121 | return 1; |
6122 | if (str[4] == 'R' && str[5] != 'T') | |
6123 | return 1; | |
6124 | return 0; | |
6125 | } | |
6126 | if (!isdigit (str[2])) | |
6127 | return 0; | |
6128 | for (k = 3; str[k] != '\0'; k += 1) | |
6129 | if (!isdigit (str[k]) && str[k] != '_') | |
6130 | return 0; | |
14f9c5c9 AS |
6131 | return 1; |
6132 | } | |
4c4b4cd2 | 6133 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 6134 | { |
4c4b4cd2 PH |
6135 | for (k = 2; str[k] != '\0'; k += 1) |
6136 | if (!isdigit (str[k]) && str[k] != '_') | |
6137 | return 0; | |
14f9c5c9 AS |
6138 | return 1; |
6139 | } | |
6140 | return 0; | |
6141 | } | |
d2e4a39e | 6142 | |
aeb5907d JB |
6143 | /* Return non-zero if the string starting at NAME and ending before |
6144 | NAME_END contains no capital letters. */ | |
529cad9c PH |
6145 | |
6146 | static int | |
6147 | is_valid_name_for_wild_match (const char *name0) | |
6148 | { | |
6149 | const char *decoded_name = ada_decode (name0); | |
6150 | int i; | |
6151 | ||
5823c3ef JB |
6152 | /* If the decoded name starts with an angle bracket, it means that |
6153 | NAME0 does not follow the GNAT encoding format. It should then | |
6154 | not be allowed as a possible wild match. */ | |
6155 | if (decoded_name[0] == '<') | |
6156 | return 0; | |
6157 | ||
529cad9c PH |
6158 | for (i=0; decoded_name[i] != '\0'; i++) |
6159 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
6160 | return 0; | |
6161 | ||
6162 | return 1; | |
6163 | } | |
6164 | ||
73589123 PH |
6165 | /* Advance *NAMEP to next occurrence of TARGET0 in the string NAME0 |
6166 | that could start a simple name. Assumes that *NAMEP points into | |
6167 | the string beginning at NAME0. */ | |
4c4b4cd2 | 6168 | |
14f9c5c9 | 6169 | static int |
73589123 | 6170 | advance_wild_match (const char **namep, const char *name0, int target0) |
14f9c5c9 | 6171 | { |
73589123 | 6172 | const char *name = *namep; |
5b4ee69b | 6173 | |
5823c3ef | 6174 | while (1) |
14f9c5c9 | 6175 | { |
aa27d0b3 | 6176 | int t0, t1; |
73589123 PH |
6177 | |
6178 | t0 = *name; | |
6179 | if (t0 == '_') | |
6180 | { | |
6181 | t1 = name[1]; | |
6182 | if ((t1 >= 'a' && t1 <= 'z') || (t1 >= '0' && t1 <= '9')) | |
6183 | { | |
6184 | name += 1; | |
61012eef | 6185 | if (name == name0 + 5 && startswith (name0, "_ada")) |
73589123 PH |
6186 | break; |
6187 | else | |
6188 | name += 1; | |
6189 | } | |
aa27d0b3 JB |
6190 | else if (t1 == '_' && ((name[2] >= 'a' && name[2] <= 'z') |
6191 | || name[2] == target0)) | |
73589123 PH |
6192 | { |
6193 | name += 2; | |
6194 | break; | |
6195 | } | |
6196 | else | |
6197 | return 0; | |
6198 | } | |
6199 | else if ((t0 >= 'a' && t0 <= 'z') || (t0 >= '0' && t0 <= '9')) | |
6200 | name += 1; | |
6201 | else | |
5823c3ef | 6202 | return 0; |
73589123 PH |
6203 | } |
6204 | ||
6205 | *namep = name; | |
6206 | return 1; | |
6207 | } | |
6208 | ||
b5ec771e PA |
6209 | /* Return true iff NAME encodes a name of the form prefix.PATN. |
6210 | Ignores any informational suffixes of NAME (i.e., for which | |
6211 | is_name_suffix is true). Assumes that PATN is a lower-cased Ada | |
6212 | simple name. */ | |
73589123 | 6213 | |
b5ec771e | 6214 | static bool |
73589123 PH |
6215 | wild_match (const char *name, const char *patn) |
6216 | { | |
22e048c9 | 6217 | const char *p; |
73589123 PH |
6218 | const char *name0 = name; |
6219 | ||
6220 | while (1) | |
6221 | { | |
6222 | const char *match = name; | |
6223 | ||
6224 | if (*name == *patn) | |
6225 | { | |
6226 | for (name += 1, p = patn + 1; *p != '\0'; name += 1, p += 1) | |
6227 | if (*p != *name) | |
6228 | break; | |
6229 | if (*p == '\0' && is_name_suffix (name)) | |
b5ec771e | 6230 | return match == name0 || is_valid_name_for_wild_match (name0); |
73589123 PH |
6231 | |
6232 | if (name[-1] == '_') | |
6233 | name -= 1; | |
6234 | } | |
6235 | if (!advance_wild_match (&name, name0, *patn)) | |
b5ec771e | 6236 | return false; |
96d887e8 | 6237 | } |
96d887e8 PH |
6238 | } |
6239 | ||
b5ec771e PA |
6240 | /* Returns true iff symbol name SYM_NAME matches SEARCH_NAME, ignoring |
6241 | any trailing suffixes that encode debugging information or leading | |
6242 | _ada_ on SYM_NAME (see is_name_suffix commentary for the debugging | |
6243 | information that is ignored). */ | |
40658b94 | 6244 | |
b5ec771e | 6245 | static bool |
c4d840bd PH |
6246 | full_match (const char *sym_name, const char *search_name) |
6247 | { | |
b5ec771e PA |
6248 | size_t search_name_len = strlen (search_name); |
6249 | ||
6250 | if (strncmp (sym_name, search_name, search_name_len) == 0 | |
6251 | && is_name_suffix (sym_name + search_name_len)) | |
6252 | return true; | |
6253 | ||
6254 | if (startswith (sym_name, "_ada_") | |
6255 | && strncmp (sym_name + 5, search_name, search_name_len) == 0 | |
6256 | && is_name_suffix (sym_name + search_name_len + 5)) | |
6257 | return true; | |
c4d840bd | 6258 | |
b5ec771e PA |
6259 | return false; |
6260 | } | |
c4d840bd | 6261 | |
b5ec771e PA |
6262 | /* Add symbols from BLOCK matching LOOKUP_NAME in DOMAIN to vector |
6263 | *defn_symbols, updating the list of symbols in OBSTACKP (if | |
6264 | necessary). OBJFILE is the section containing BLOCK. */ | |
96d887e8 PH |
6265 | |
6266 | static void | |
6267 | ada_add_block_symbols (struct obstack *obstackp, | |
b5ec771e PA |
6268 | const struct block *block, |
6269 | const lookup_name_info &lookup_name, | |
6270 | domain_enum domain, struct objfile *objfile) | |
96d887e8 | 6271 | { |
8157b174 | 6272 | struct block_iterator iter; |
96d887e8 PH |
6273 | /* A matching argument symbol, if any. */ |
6274 | struct symbol *arg_sym; | |
6275 | /* Set true when we find a matching non-argument symbol. */ | |
6276 | int found_sym; | |
6277 | struct symbol *sym; | |
6278 | ||
6279 | arg_sym = NULL; | |
6280 | found_sym = 0; | |
b5ec771e PA |
6281 | for (sym = block_iter_match_first (block, lookup_name, &iter); |
6282 | sym != NULL; | |
6283 | sym = block_iter_match_next (lookup_name, &iter)) | |
96d887e8 | 6284 | { |
b5ec771e PA |
6285 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
6286 | SYMBOL_DOMAIN (sym), domain)) | |
6287 | { | |
6288 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) | |
6289 | { | |
6290 | if (SYMBOL_IS_ARGUMENT (sym)) | |
6291 | arg_sym = sym; | |
6292 | else | |
6293 | { | |
6294 | found_sym = 1; | |
6295 | add_defn_to_vec (obstackp, | |
6296 | fixup_symbol_section (sym, objfile), | |
6297 | block); | |
6298 | } | |
6299 | } | |
6300 | } | |
96d887e8 PH |
6301 | } |
6302 | ||
22cee43f PMR |
6303 | /* Handle renamings. */ |
6304 | ||
b5ec771e | 6305 | if (ada_add_block_renamings (obstackp, block, lookup_name, domain)) |
22cee43f PMR |
6306 | found_sym = 1; |
6307 | ||
96d887e8 PH |
6308 | if (!found_sym && arg_sym != NULL) |
6309 | { | |
76a01679 JB |
6310 | add_defn_to_vec (obstackp, |
6311 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 6312 | block); |
96d887e8 PH |
6313 | } |
6314 | ||
b5ec771e | 6315 | if (!lookup_name.ada ().wild_match_p ()) |
96d887e8 PH |
6316 | { |
6317 | arg_sym = NULL; | |
6318 | found_sym = 0; | |
b5ec771e PA |
6319 | const std::string &ada_lookup_name = lookup_name.ada ().lookup_name (); |
6320 | const char *name = ada_lookup_name.c_str (); | |
6321 | size_t name_len = ada_lookup_name.size (); | |
96d887e8 PH |
6322 | |
6323 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 6324 | { |
4186eb54 KS |
6325 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
6326 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
6327 | { |
6328 | int cmp; | |
6329 | ||
6330 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
6331 | if (cmp == 0) | |
6332 | { | |
61012eef | 6333 | cmp = !startswith (SYMBOL_LINKAGE_NAME (sym), "_ada_"); |
76a01679 JB |
6334 | if (cmp == 0) |
6335 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
6336 | name_len); | |
6337 | } | |
6338 | ||
6339 | if (cmp == 0 | |
6340 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
6341 | { | |
2a2d4dc3 AS |
6342 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
6343 | { | |
6344 | if (SYMBOL_IS_ARGUMENT (sym)) | |
6345 | arg_sym = sym; | |
6346 | else | |
6347 | { | |
6348 | found_sym = 1; | |
6349 | add_defn_to_vec (obstackp, | |
6350 | fixup_symbol_section (sym, objfile), | |
6351 | block); | |
6352 | } | |
6353 | } | |
76a01679 JB |
6354 | } |
6355 | } | |
76a01679 | 6356 | } |
96d887e8 PH |
6357 | |
6358 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
6359 | They aren't parameters, right? */ | |
6360 | if (!found_sym && arg_sym != NULL) | |
6361 | { | |
6362 | add_defn_to_vec (obstackp, | |
76a01679 | 6363 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 6364 | block); |
96d887e8 PH |
6365 | } |
6366 | } | |
6367 | } | |
6368 | \f | |
41d27058 JB |
6369 | |
6370 | /* Symbol Completion */ | |
6371 | ||
b5ec771e | 6372 | /* See symtab.h. */ |
41d27058 | 6373 | |
b5ec771e PA |
6374 | bool |
6375 | ada_lookup_name_info::matches | |
6376 | (const char *sym_name, | |
6377 | symbol_name_match_type match_type, | |
a207cff2 | 6378 | completion_match_result *comp_match_res) const |
41d27058 | 6379 | { |
b5ec771e PA |
6380 | bool match = false; |
6381 | const char *text = m_encoded_name.c_str (); | |
6382 | size_t text_len = m_encoded_name.size (); | |
41d27058 JB |
6383 | |
6384 | /* First, test against the fully qualified name of the symbol. */ | |
6385 | ||
6386 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6387 | match = true; |
41d27058 | 6388 | |
b5ec771e | 6389 | if (match && !m_encoded_p) |
41d27058 JB |
6390 | { |
6391 | /* One needed check before declaring a positive match is to verify | |
6392 | that iff we are doing a verbatim match, the decoded version | |
6393 | of the symbol name starts with '<'. Otherwise, this symbol name | |
6394 | is not a suitable completion. */ | |
6395 | const char *sym_name_copy = sym_name; | |
b5ec771e | 6396 | bool has_angle_bracket; |
41d27058 JB |
6397 | |
6398 | sym_name = ada_decode (sym_name); | |
6399 | has_angle_bracket = (sym_name[0] == '<'); | |
b5ec771e | 6400 | match = (has_angle_bracket == m_verbatim_p); |
41d27058 JB |
6401 | sym_name = sym_name_copy; |
6402 | } | |
6403 | ||
b5ec771e | 6404 | if (match && !m_verbatim_p) |
41d27058 JB |
6405 | { |
6406 | /* When doing non-verbatim match, another check that needs to | |
6407 | be done is to verify that the potentially matching symbol name | |
6408 | does not include capital letters, because the ada-mode would | |
6409 | not be able to understand these symbol names without the | |
6410 | angle bracket notation. */ | |
6411 | const char *tmp; | |
6412 | ||
6413 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
6414 | if (*tmp != '\0') | |
b5ec771e | 6415 | match = false; |
41d27058 JB |
6416 | } |
6417 | ||
6418 | /* Second: Try wild matching... */ | |
6419 | ||
b5ec771e | 6420 | if (!match && m_wild_match_p) |
41d27058 JB |
6421 | { |
6422 | /* Since we are doing wild matching, this means that TEXT | |
6423 | may represent an unqualified symbol name. We therefore must | |
6424 | also compare TEXT against the unqualified name of the symbol. */ | |
6425 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
6426 | ||
6427 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6428 | match = true; |
41d27058 JB |
6429 | } |
6430 | ||
b5ec771e | 6431 | /* Finally: If we found a match, prepare the result to return. */ |
41d27058 JB |
6432 | |
6433 | if (!match) | |
b5ec771e | 6434 | return false; |
41d27058 | 6435 | |
a207cff2 | 6436 | if (comp_match_res != NULL) |
b5ec771e | 6437 | { |
a207cff2 | 6438 | std::string &match_str = comp_match_res->match.storage (); |
41d27058 | 6439 | |
b5ec771e | 6440 | if (!m_encoded_p) |
a207cff2 | 6441 | match_str = ada_decode (sym_name); |
b5ec771e PA |
6442 | else |
6443 | { | |
6444 | if (m_verbatim_p) | |
6445 | match_str = add_angle_brackets (sym_name); | |
6446 | else | |
6447 | match_str = sym_name; | |
41d27058 | 6448 | |
b5ec771e | 6449 | } |
a207cff2 PA |
6450 | |
6451 | comp_match_res->set_match (match_str.c_str ()); | |
41d27058 JB |
6452 | } |
6453 | ||
b5ec771e | 6454 | return true; |
41d27058 JB |
6455 | } |
6456 | ||
b5ec771e | 6457 | /* Add the list of possible symbol names completing TEXT to TRACKER. |
eb3ff9a5 | 6458 | WORD is the entire command on which completion is made. */ |
41d27058 | 6459 | |
eb3ff9a5 PA |
6460 | static void |
6461 | ada_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 6462 | complete_symbol_mode mode, |
b5ec771e PA |
6463 | symbol_name_match_type name_match_type, |
6464 | const char *text, const char *word, | |
eb3ff9a5 | 6465 | enum type_code code) |
41d27058 | 6466 | { |
41d27058 | 6467 | struct symbol *sym; |
43f3e411 | 6468 | struct compunit_symtab *s; |
41d27058 JB |
6469 | struct minimal_symbol *msymbol; |
6470 | struct objfile *objfile; | |
3977b71f | 6471 | const struct block *b, *surrounding_static_block = 0; |
8157b174 | 6472 | struct block_iterator iter; |
b8fea896 | 6473 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
41d27058 | 6474 | |
2f68a895 TT |
6475 | gdb_assert (code == TYPE_CODE_UNDEF); |
6476 | ||
1b026119 | 6477 | lookup_name_info lookup_name (text, name_match_type, true); |
41d27058 JB |
6478 | |
6479 | /* First, look at the partial symtab symbols. */ | |
14bc53a8 | 6480 | expand_symtabs_matching (NULL, |
b5ec771e PA |
6481 | lookup_name, |
6482 | NULL, | |
14bc53a8 PA |
6483 | NULL, |
6484 | ALL_DOMAIN); | |
41d27058 JB |
6485 | |
6486 | /* At this point scan through the misc symbol vectors and add each | |
6487 | symbol you find to the list. Eventually we want to ignore | |
6488 | anything that isn't a text symbol (everything else will be | |
6489 | handled by the psymtab code above). */ | |
6490 | ||
6491 | ALL_MSYMBOLS (objfile, msymbol) | |
6492 | { | |
6493 | QUIT; | |
b5ec771e | 6494 | |
f9d67a22 PA |
6495 | if (completion_skip_symbol (mode, msymbol)) |
6496 | continue; | |
6497 | ||
d4c2a405 PA |
6498 | language symbol_language = MSYMBOL_LANGUAGE (msymbol); |
6499 | ||
6500 | /* Ada minimal symbols won't have their language set to Ada. If | |
6501 | we let completion_list_add_name compare using the | |
6502 | default/C-like matcher, then when completing e.g., symbols in a | |
6503 | package named "pck", we'd match internal Ada symbols like | |
6504 | "pckS", which are invalid in an Ada expression, unless you wrap | |
6505 | them in '<' '>' to request a verbatim match. | |
6506 | ||
6507 | Unfortunately, some Ada encoded names successfully demangle as | |
6508 | C++ symbols (using an old mangling scheme), such as "name__2Xn" | |
6509 | -> "Xn::name(void)" and thus some Ada minimal symbols end up | |
6510 | with the wrong language set. Paper over that issue here. */ | |
6511 | if (symbol_language == language_auto | |
6512 | || symbol_language == language_cplus) | |
6513 | symbol_language = language_ada; | |
6514 | ||
b5ec771e | 6515 | completion_list_add_name (tracker, |
d4c2a405 | 6516 | symbol_language, |
b5ec771e | 6517 | MSYMBOL_LINKAGE_NAME (msymbol), |
1b026119 | 6518 | lookup_name, text, word); |
41d27058 JB |
6519 | } |
6520 | ||
6521 | /* Search upwards from currently selected frame (so that we can | |
6522 | complete on local vars. */ | |
6523 | ||
6524 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
6525 | { | |
6526 | if (!BLOCK_SUPERBLOCK (b)) | |
6527 | surrounding_static_block = b; /* For elmin of dups */ | |
6528 | ||
6529 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
6530 | { | |
f9d67a22 PA |
6531 | if (completion_skip_symbol (mode, sym)) |
6532 | continue; | |
6533 | ||
b5ec771e PA |
6534 | completion_list_add_name (tracker, |
6535 | SYMBOL_LANGUAGE (sym), | |
6536 | SYMBOL_LINKAGE_NAME (sym), | |
1b026119 | 6537 | lookup_name, text, word); |
41d27058 JB |
6538 | } |
6539 | } | |
6540 | ||
6541 | /* Go through the symtabs and check the externs and statics for | |
43f3e411 | 6542 | symbols which match. */ |
41d27058 | 6543 | |
43f3e411 | 6544 | ALL_COMPUNITS (objfile, s) |
41d27058 JB |
6545 | { |
6546 | QUIT; | |
43f3e411 | 6547 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), GLOBAL_BLOCK); |
41d27058 JB |
6548 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
6549 | { | |
f9d67a22 PA |
6550 | if (completion_skip_symbol (mode, sym)) |
6551 | continue; | |
6552 | ||
b5ec771e PA |
6553 | completion_list_add_name (tracker, |
6554 | SYMBOL_LANGUAGE (sym), | |
6555 | SYMBOL_LINKAGE_NAME (sym), | |
1b026119 | 6556 | lookup_name, text, word); |
41d27058 JB |
6557 | } |
6558 | } | |
6559 | ||
43f3e411 | 6560 | ALL_COMPUNITS (objfile, s) |
41d27058 JB |
6561 | { |
6562 | QUIT; | |
43f3e411 | 6563 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), STATIC_BLOCK); |
41d27058 JB |
6564 | /* Don't do this block twice. */ |
6565 | if (b == surrounding_static_block) | |
6566 | continue; | |
6567 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
6568 | { | |
f9d67a22 PA |
6569 | if (completion_skip_symbol (mode, sym)) |
6570 | continue; | |
6571 | ||
b5ec771e PA |
6572 | completion_list_add_name (tracker, |
6573 | SYMBOL_LANGUAGE (sym), | |
6574 | SYMBOL_LINKAGE_NAME (sym), | |
1b026119 | 6575 | lookup_name, text, word); |
41d27058 JB |
6576 | } |
6577 | } | |
6578 | ||
b8fea896 | 6579 | do_cleanups (old_chain); |
41d27058 JB |
6580 | } |
6581 | ||
963a6417 | 6582 | /* Field Access */ |
96d887e8 | 6583 | |
73fb9985 JB |
6584 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
6585 | for tagged types. */ | |
6586 | ||
6587 | static int | |
6588 | ada_is_dispatch_table_ptr_type (struct type *type) | |
6589 | { | |
0d5cff50 | 6590 | const char *name; |
73fb9985 JB |
6591 | |
6592 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
6593 | return 0; | |
6594 | ||
6595 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
6596 | if (name == NULL) | |
6597 | return 0; | |
6598 | ||
6599 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
6600 | } | |
6601 | ||
ac4a2da4 JG |
6602 | /* Return non-zero if TYPE is an interface tag. */ |
6603 | ||
6604 | static int | |
6605 | ada_is_interface_tag (struct type *type) | |
6606 | { | |
6607 | const char *name = TYPE_NAME (type); | |
6608 | ||
6609 | if (name == NULL) | |
6610 | return 0; | |
6611 | ||
6612 | return (strcmp (name, "ada__tags__interface_tag") == 0); | |
6613 | } | |
6614 | ||
963a6417 PH |
6615 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
6616 | to be invisible to users. */ | |
96d887e8 | 6617 | |
963a6417 PH |
6618 | int |
6619 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 6620 | { |
963a6417 PH |
6621 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
6622 | return 1; | |
ffde82bf | 6623 | |
73fb9985 JB |
6624 | /* Check the name of that field. */ |
6625 | { | |
6626 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
6627 | ||
6628 | /* Anonymous field names should not be printed. | |
6629 | brobecker/2007-02-20: I don't think this can actually happen | |
6630 | but we don't want to print the value of annonymous fields anyway. */ | |
6631 | if (name == NULL) | |
6632 | return 1; | |
6633 | ||
ffde82bf JB |
6634 | /* Normally, fields whose name start with an underscore ("_") |
6635 | are fields that have been internally generated by the compiler, | |
6636 | and thus should not be printed. The "_parent" field is special, | |
6637 | however: This is a field internally generated by the compiler | |
6638 | for tagged types, and it contains the components inherited from | |
6639 | the parent type. This field should not be printed as is, but | |
6640 | should not be ignored either. */ | |
61012eef | 6641 | if (name[0] == '_' && !startswith (name, "_parent")) |
73fb9985 JB |
6642 | return 1; |
6643 | } | |
6644 | ||
ac4a2da4 JG |
6645 | /* If this is the dispatch table of a tagged type or an interface tag, |
6646 | then ignore. */ | |
73fb9985 | 6647 | if (ada_is_tagged_type (type, 1) |
ac4a2da4 JG |
6648 | && (ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num)) |
6649 | || ada_is_interface_tag (TYPE_FIELD_TYPE (type, field_num)))) | |
73fb9985 JB |
6650 | return 1; |
6651 | ||
6652 | /* Not a special field, so it should not be ignored. */ | |
6653 | return 0; | |
963a6417 | 6654 | } |
96d887e8 | 6655 | |
963a6417 | 6656 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
0963b4bd | 6657 | pointer or reference type whose ultimate target has a tag field. */ |
96d887e8 | 6658 | |
963a6417 PH |
6659 | int |
6660 | ada_is_tagged_type (struct type *type, int refok) | |
6661 | { | |
988f6b3d | 6662 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1) != NULL); |
963a6417 | 6663 | } |
96d887e8 | 6664 | |
963a6417 | 6665 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 6666 | |
963a6417 PH |
6667 | int |
6668 | ada_is_tag_type (struct type *type) | |
6669 | { | |
460efde1 JB |
6670 | type = ada_check_typedef (type); |
6671 | ||
963a6417 PH |
6672 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) |
6673 | return 0; | |
6674 | else | |
96d887e8 | 6675 | { |
963a6417 | 6676 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5b4ee69b | 6677 | |
963a6417 PH |
6678 | return (name != NULL |
6679 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 6680 | } |
96d887e8 PH |
6681 | } |
6682 | ||
963a6417 | 6683 | /* The type of the tag on VAL. */ |
76a01679 | 6684 | |
963a6417 PH |
6685 | struct type * |
6686 | ada_tag_type (struct value *val) | |
96d887e8 | 6687 | { |
988f6b3d | 6688 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0); |
963a6417 | 6689 | } |
96d887e8 | 6690 | |
b50d69b5 JG |
6691 | /* Return 1 if TAG follows the old scheme for Ada tags (used for Ada 95, |
6692 | retired at Ada 05). */ | |
6693 | ||
6694 | static int | |
6695 | is_ada95_tag (struct value *tag) | |
6696 | { | |
6697 | return ada_value_struct_elt (tag, "tsd", 1) != NULL; | |
6698 | } | |
6699 | ||
963a6417 | 6700 | /* The value of the tag on VAL. */ |
96d887e8 | 6701 | |
963a6417 PH |
6702 | struct value * |
6703 | ada_value_tag (struct value *val) | |
6704 | { | |
03ee6b2e | 6705 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
6706 | } |
6707 | ||
963a6417 PH |
6708 | /* The value of the tag on the object of type TYPE whose contents are |
6709 | saved at VALADDR, if it is non-null, or is at memory address | |
0963b4bd | 6710 | ADDRESS. */ |
96d887e8 | 6711 | |
963a6417 | 6712 | static struct value * |
10a2c479 | 6713 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 6714 | const gdb_byte *valaddr, |
963a6417 | 6715 | CORE_ADDR address) |
96d887e8 | 6716 | { |
b5385fc0 | 6717 | int tag_byte_offset; |
963a6417 | 6718 | struct type *tag_type; |
5b4ee69b | 6719 | |
963a6417 | 6720 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, |
52ce6436 | 6721 | NULL, NULL, NULL)) |
96d887e8 | 6722 | { |
fc1a4b47 | 6723 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
6724 | ? NULL |
6725 | : valaddr + tag_byte_offset); | |
963a6417 | 6726 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 6727 | |
963a6417 | 6728 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 6729 | } |
963a6417 PH |
6730 | return NULL; |
6731 | } | |
96d887e8 | 6732 | |
963a6417 PH |
6733 | static struct type * |
6734 | type_from_tag (struct value *tag) | |
6735 | { | |
6736 | const char *type_name = ada_tag_name (tag); | |
5b4ee69b | 6737 | |
963a6417 PH |
6738 | if (type_name != NULL) |
6739 | return ada_find_any_type (ada_encode (type_name)); | |
6740 | return NULL; | |
6741 | } | |
96d887e8 | 6742 | |
b50d69b5 JG |
6743 | /* Given a value OBJ of a tagged type, return a value of this |
6744 | type at the base address of the object. The base address, as | |
6745 | defined in Ada.Tags, it is the address of the primary tag of | |
6746 | the object, and therefore where the field values of its full | |
6747 | view can be fetched. */ | |
6748 | ||
6749 | struct value * | |
6750 | ada_tag_value_at_base_address (struct value *obj) | |
6751 | { | |
b50d69b5 JG |
6752 | struct value *val; |
6753 | LONGEST offset_to_top = 0; | |
6754 | struct type *ptr_type, *obj_type; | |
6755 | struct value *tag; | |
6756 | CORE_ADDR base_address; | |
6757 | ||
6758 | obj_type = value_type (obj); | |
6759 | ||
6760 | /* It is the responsability of the caller to deref pointers. */ | |
6761 | ||
6762 | if (TYPE_CODE (obj_type) == TYPE_CODE_PTR | |
6763 | || TYPE_CODE (obj_type) == TYPE_CODE_REF) | |
6764 | return obj; | |
6765 | ||
6766 | tag = ada_value_tag (obj); | |
6767 | if (!tag) | |
6768 | return obj; | |
6769 | ||
6770 | /* Base addresses only appeared with Ada 05 and multiple inheritance. */ | |
6771 | ||
6772 | if (is_ada95_tag (tag)) | |
6773 | return obj; | |
6774 | ||
08f49010 XR |
6775 | ptr_type = language_lookup_primitive_type |
6776 | (language_def (language_ada), target_gdbarch(), "storage_offset"); | |
b50d69b5 JG |
6777 | ptr_type = lookup_pointer_type (ptr_type); |
6778 | val = value_cast (ptr_type, tag); | |
6779 | if (!val) | |
6780 | return obj; | |
6781 | ||
6782 | /* It is perfectly possible that an exception be raised while | |
6783 | trying to determine the base address, just like for the tag; | |
6784 | see ada_tag_name for more details. We do not print the error | |
6785 | message for the same reason. */ | |
6786 | ||
492d29ea | 6787 | TRY |
b50d69b5 JG |
6788 | { |
6789 | offset_to_top = value_as_long (value_ind (value_ptradd (val, -2))); | |
6790 | } | |
6791 | ||
492d29ea PA |
6792 | CATCH (e, RETURN_MASK_ERROR) |
6793 | { | |
6794 | return obj; | |
6795 | } | |
6796 | END_CATCH | |
b50d69b5 JG |
6797 | |
6798 | /* If offset is null, nothing to do. */ | |
6799 | ||
6800 | if (offset_to_top == 0) | |
6801 | return obj; | |
6802 | ||
6803 | /* -1 is a special case in Ada.Tags; however, what should be done | |
6804 | is not quite clear from the documentation. So do nothing for | |
6805 | now. */ | |
6806 | ||
6807 | if (offset_to_top == -1) | |
6808 | return obj; | |
6809 | ||
08f49010 XR |
6810 | /* OFFSET_TO_TOP used to be a positive value to be subtracted |
6811 | from the base address. This was however incompatible with | |
6812 | C++ dispatch table: C++ uses a *negative* value to *add* | |
6813 | to the base address. Ada's convention has therefore been | |
6814 | changed in GNAT 19.0w 20171023: since then, C++ and Ada | |
6815 | use the same convention. Here, we support both cases by | |
6816 | checking the sign of OFFSET_TO_TOP. */ | |
6817 | ||
6818 | if (offset_to_top > 0) | |
6819 | offset_to_top = -offset_to_top; | |
6820 | ||
6821 | base_address = value_address (obj) + offset_to_top; | |
b50d69b5 JG |
6822 | tag = value_tag_from_contents_and_address (obj_type, NULL, base_address); |
6823 | ||
6824 | /* Make sure that we have a proper tag at the new address. | |
6825 | Otherwise, offset_to_top is bogus (which can happen when | |
6826 | the object is not initialized yet). */ | |
6827 | ||
6828 | if (!tag) | |
6829 | return obj; | |
6830 | ||
6831 | obj_type = type_from_tag (tag); | |
6832 | ||
6833 | if (!obj_type) | |
6834 | return obj; | |
6835 | ||
6836 | return value_from_contents_and_address (obj_type, NULL, base_address); | |
6837 | } | |
6838 | ||
1b611343 JB |
6839 | /* Return the "ada__tags__type_specific_data" type. */ |
6840 | ||
6841 | static struct type * | |
6842 | ada_get_tsd_type (struct inferior *inf) | |
963a6417 | 6843 | { |
1b611343 | 6844 | struct ada_inferior_data *data = get_ada_inferior_data (inf); |
4c4b4cd2 | 6845 | |
1b611343 JB |
6846 | if (data->tsd_type == 0) |
6847 | data->tsd_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
6848 | return data->tsd_type; | |
6849 | } | |
529cad9c | 6850 | |
1b611343 JB |
6851 | /* Return the TSD (type-specific data) associated to the given TAG. |
6852 | TAG is assumed to be the tag of a tagged-type entity. | |
529cad9c | 6853 | |
1b611343 | 6854 | May return NULL if we are unable to get the TSD. */ |
4c4b4cd2 | 6855 | |
1b611343 JB |
6856 | static struct value * |
6857 | ada_get_tsd_from_tag (struct value *tag) | |
4c4b4cd2 | 6858 | { |
4c4b4cd2 | 6859 | struct value *val; |
1b611343 | 6860 | struct type *type; |
5b4ee69b | 6861 | |
1b611343 JB |
6862 | /* First option: The TSD is simply stored as a field of our TAG. |
6863 | Only older versions of GNAT would use this format, but we have | |
6864 | to test it first, because there are no visible markers for | |
6865 | the current approach except the absence of that field. */ | |
529cad9c | 6866 | |
1b611343 JB |
6867 | val = ada_value_struct_elt (tag, "tsd", 1); |
6868 | if (val) | |
6869 | return val; | |
e802dbe0 | 6870 | |
1b611343 JB |
6871 | /* Try the second representation for the dispatch table (in which |
6872 | there is no explicit 'tsd' field in the referent of the tag pointer, | |
6873 | and instead the tsd pointer is stored just before the dispatch | |
6874 | table. */ | |
e802dbe0 | 6875 | |
1b611343 JB |
6876 | type = ada_get_tsd_type (current_inferior()); |
6877 | if (type == NULL) | |
6878 | return NULL; | |
6879 | type = lookup_pointer_type (lookup_pointer_type (type)); | |
6880 | val = value_cast (type, tag); | |
6881 | if (val == NULL) | |
6882 | return NULL; | |
6883 | return value_ind (value_ptradd (val, -1)); | |
e802dbe0 JB |
6884 | } |
6885 | ||
1b611343 JB |
6886 | /* Given the TSD of a tag (type-specific data), return a string |
6887 | containing the name of the associated type. | |
6888 | ||
6889 | The returned value is good until the next call. May return NULL | |
6890 | if we are unable to determine the tag name. */ | |
6891 | ||
6892 | static char * | |
6893 | ada_tag_name_from_tsd (struct value *tsd) | |
529cad9c | 6894 | { |
529cad9c PH |
6895 | static char name[1024]; |
6896 | char *p; | |
1b611343 | 6897 | struct value *val; |
529cad9c | 6898 | |
1b611343 | 6899 | val = ada_value_struct_elt (tsd, "expanded_name", 1); |
4c4b4cd2 | 6900 | if (val == NULL) |
1b611343 | 6901 | return NULL; |
4c4b4cd2 PH |
6902 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); |
6903 | for (p = name; *p != '\0'; p += 1) | |
6904 | if (isalpha (*p)) | |
6905 | *p = tolower (*p); | |
1b611343 | 6906 | return name; |
4c4b4cd2 PH |
6907 | } |
6908 | ||
6909 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
1b611343 JB |
6910 | a C string. |
6911 | ||
6912 | Return NULL if the TAG is not an Ada tag, or if we were unable to | |
6913 | determine the name of that tag. The result is good until the next | |
6914 | call. */ | |
4c4b4cd2 PH |
6915 | |
6916 | const char * | |
6917 | ada_tag_name (struct value *tag) | |
6918 | { | |
1b611343 | 6919 | char *name = NULL; |
5b4ee69b | 6920 | |
df407dfe | 6921 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 6922 | return NULL; |
1b611343 JB |
6923 | |
6924 | /* It is perfectly possible that an exception be raised while trying | |
6925 | to determine the TAG's name, even under normal circumstances: | |
6926 | The associated variable may be uninitialized or corrupted, for | |
6927 | instance. We do not let any exception propagate past this point. | |
6928 | instead we return NULL. | |
6929 | ||
6930 | We also do not print the error message either (which often is very | |
6931 | low-level (Eg: "Cannot read memory at 0x[...]"), but instead let | |
6932 | the caller print a more meaningful message if necessary. */ | |
492d29ea | 6933 | TRY |
1b611343 JB |
6934 | { |
6935 | struct value *tsd = ada_get_tsd_from_tag (tag); | |
6936 | ||
6937 | if (tsd != NULL) | |
6938 | name = ada_tag_name_from_tsd (tsd); | |
6939 | } | |
492d29ea PA |
6940 | CATCH (e, RETURN_MASK_ERROR) |
6941 | { | |
6942 | } | |
6943 | END_CATCH | |
1b611343 JB |
6944 | |
6945 | return name; | |
4c4b4cd2 PH |
6946 | } |
6947 | ||
6948 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 6949 | |
d2e4a39e | 6950 | struct type * |
ebf56fd3 | 6951 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
6952 | { |
6953 | int i; | |
6954 | ||
61ee279c | 6955 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6956 | |
6957 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
6958 | return NULL; | |
6959 | ||
6960 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6961 | if (ada_is_parent_field (type, i)) | |
0c1f74cf JB |
6962 | { |
6963 | struct type *parent_type = TYPE_FIELD_TYPE (type, i); | |
6964 | ||
6965 | /* If the _parent field is a pointer, then dereference it. */ | |
6966 | if (TYPE_CODE (parent_type) == TYPE_CODE_PTR) | |
6967 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
6968 | /* If there is a parallel XVS type, get the actual base type. */ | |
6969 | parent_type = ada_get_base_type (parent_type); | |
6970 | ||
6971 | return ada_check_typedef (parent_type); | |
6972 | } | |
14f9c5c9 AS |
6973 | |
6974 | return NULL; | |
6975 | } | |
6976 | ||
4c4b4cd2 PH |
6977 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
6978 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
6979 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6980 | |
6981 | int | |
ebf56fd3 | 6982 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 6983 | { |
61ee279c | 6984 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
5b4ee69b | 6985 | |
4c4b4cd2 | 6986 | return (name != NULL |
61012eef GB |
6987 | && (startswith (name, "PARENT") |
6988 | || startswith (name, "_parent"))); | |
14f9c5c9 AS |
6989 | } |
6990 | ||
4c4b4cd2 | 6991 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 6992 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 6993 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 6994 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 6995 | structures. */ |
14f9c5c9 AS |
6996 | |
6997 | int | |
ebf56fd3 | 6998 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 6999 | { |
d2e4a39e | 7000 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 7001 | |
dddc0e16 JB |
7002 | if (name != NULL && strcmp (name, "RETVAL") == 0) |
7003 | { | |
7004 | /* This happens in functions with "out" or "in out" parameters | |
7005 | which are passed by copy. For such functions, GNAT describes | |
7006 | the function's return type as being a struct where the return | |
7007 | value is in a field called RETVAL, and where the other "out" | |
7008 | or "in out" parameters are fields of that struct. This is not | |
7009 | a wrapper. */ | |
7010 | return 0; | |
7011 | } | |
7012 | ||
d2e4a39e | 7013 | return (name != NULL |
61012eef | 7014 | && (startswith (name, "PARENT") |
4c4b4cd2 | 7015 | || strcmp (name, "REP") == 0 |
61012eef | 7016 | || startswith (name, "_parent") |
4c4b4cd2 | 7017 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); |
14f9c5c9 AS |
7018 | } |
7019 | ||
4c4b4cd2 PH |
7020 | /* True iff field number FIELD_NUM of structure or union type TYPE |
7021 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
7022 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
7023 | |
7024 | int | |
ebf56fd3 | 7025 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 7026 | { |
d2e4a39e | 7027 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
5b4ee69b | 7028 | |
14f9c5c9 | 7029 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 7030 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
7031 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
7032 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
7033 | } |
7034 | ||
7035 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 7036 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
7037 | returns the type of the controlling discriminant for the variant. |
7038 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 7039 | |
d2e4a39e | 7040 | struct type * |
ebf56fd3 | 7041 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 7042 | { |
a121b7c1 | 7043 | const char *name = ada_variant_discrim_name (var_type); |
5b4ee69b | 7044 | |
988f6b3d | 7045 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1); |
14f9c5c9 AS |
7046 | } |
7047 | ||
4c4b4cd2 | 7048 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 7049 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 7050 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
7051 | |
7052 | int | |
ebf56fd3 | 7053 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 7054 | { |
d2e4a39e | 7055 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 7056 | |
14f9c5c9 AS |
7057 | return (name != NULL && name[0] == 'O'); |
7058 | } | |
7059 | ||
7060 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
7061 | returns the name of the discriminant controlling the variant. |
7062 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 7063 | |
a121b7c1 | 7064 | const char * |
ebf56fd3 | 7065 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 7066 | { |
d2e4a39e | 7067 | static char *result = NULL; |
14f9c5c9 | 7068 | static size_t result_len = 0; |
d2e4a39e AS |
7069 | struct type *type; |
7070 | const char *name; | |
7071 | const char *discrim_end; | |
7072 | const char *discrim_start; | |
14f9c5c9 AS |
7073 | |
7074 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
7075 | type = TYPE_TARGET_TYPE (type0); | |
7076 | else | |
7077 | type = type0; | |
7078 | ||
7079 | name = ada_type_name (type); | |
7080 | ||
7081 | if (name == NULL || name[0] == '\000') | |
7082 | return ""; | |
7083 | ||
7084 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
7085 | discrim_end -= 1) | |
7086 | { | |
61012eef | 7087 | if (startswith (discrim_end, "___XVN")) |
4c4b4cd2 | 7088 | break; |
14f9c5c9 AS |
7089 | } |
7090 | if (discrim_end == name) | |
7091 | return ""; | |
7092 | ||
d2e4a39e | 7093 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
7094 | discrim_start -= 1) |
7095 | { | |
d2e4a39e | 7096 | if (discrim_start == name + 1) |
4c4b4cd2 | 7097 | return ""; |
76a01679 | 7098 | if ((discrim_start > name + 3 |
61012eef | 7099 | && startswith (discrim_start - 3, "___")) |
4c4b4cd2 PH |
7100 | || discrim_start[-1] == '.') |
7101 | break; | |
14f9c5c9 AS |
7102 | } |
7103 | ||
7104 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
7105 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 7106 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
7107 | return result; |
7108 | } | |
7109 | ||
4c4b4cd2 PH |
7110 | /* Scan STR for a subtype-encoded number, beginning at position K. |
7111 | Put the position of the character just past the number scanned in | |
7112 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
7113 | Return 1 if there was a valid number at the given position, and 0 | |
7114 | otherwise. A "subtype-encoded" number consists of the absolute value | |
7115 | in decimal, followed by the letter 'm' to indicate a negative number. | |
7116 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
7117 | |
7118 | int | |
d2e4a39e | 7119 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
7120 | { |
7121 | ULONGEST RU; | |
7122 | ||
d2e4a39e | 7123 | if (!isdigit (str[k])) |
14f9c5c9 AS |
7124 | return 0; |
7125 | ||
4c4b4cd2 | 7126 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 7127 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 7128 | LONGEST. */ |
14f9c5c9 AS |
7129 | RU = 0; |
7130 | while (isdigit (str[k])) | |
7131 | { | |
d2e4a39e | 7132 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
7133 | k += 1; |
7134 | } | |
7135 | ||
d2e4a39e | 7136 | if (str[k] == 'm') |
14f9c5c9 AS |
7137 | { |
7138 | if (R != NULL) | |
4c4b4cd2 | 7139 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
7140 | k += 1; |
7141 | } | |
7142 | else if (R != NULL) | |
7143 | *R = (LONGEST) RU; | |
7144 | ||
4c4b4cd2 | 7145 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
7146 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
7147 | number representable as a LONGEST (although either would probably work | |
7148 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 7149 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
7150 | |
7151 | if (new_k != NULL) | |
7152 | *new_k = k; | |
7153 | return 1; | |
7154 | } | |
7155 | ||
4c4b4cd2 PH |
7156 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
7157 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
7158 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 7159 | |
d2e4a39e | 7160 | int |
ebf56fd3 | 7161 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 7162 | { |
d2e4a39e | 7163 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
7164 | int p; |
7165 | ||
7166 | p = 0; | |
7167 | while (1) | |
7168 | { | |
d2e4a39e | 7169 | switch (name[p]) |
4c4b4cd2 PH |
7170 | { |
7171 | case '\0': | |
7172 | return 0; | |
7173 | case 'S': | |
7174 | { | |
7175 | LONGEST W; | |
5b4ee69b | 7176 | |
4c4b4cd2 PH |
7177 | if (!ada_scan_number (name, p + 1, &W, &p)) |
7178 | return 0; | |
7179 | if (val == W) | |
7180 | return 1; | |
7181 | break; | |
7182 | } | |
7183 | case 'R': | |
7184 | { | |
7185 | LONGEST L, U; | |
5b4ee69b | 7186 | |
4c4b4cd2 PH |
7187 | if (!ada_scan_number (name, p + 1, &L, &p) |
7188 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
7189 | return 0; | |
7190 | if (val >= L && val <= U) | |
7191 | return 1; | |
7192 | break; | |
7193 | } | |
7194 | case 'O': | |
7195 | return 1; | |
7196 | default: | |
7197 | return 0; | |
7198 | } | |
7199 | } | |
7200 | } | |
7201 | ||
0963b4bd | 7202 | /* FIXME: Lots of redundancy below. Try to consolidate. */ |
4c4b4cd2 PH |
7203 | |
7204 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
7205 | ARG_TYPE, extract and return the value of one of its (non-static) | |
7206 | fields. FIELDNO says which field. Differs from value_primitive_field | |
7207 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 7208 | |
4c4b4cd2 | 7209 | static struct value * |
d2e4a39e | 7210 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 7211 | struct type *arg_type) |
14f9c5c9 | 7212 | { |
14f9c5c9 AS |
7213 | struct type *type; |
7214 | ||
61ee279c | 7215 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
7216 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
7217 | ||
4c4b4cd2 | 7218 | /* Handle packed fields. */ |
14f9c5c9 AS |
7219 | |
7220 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
7221 | { | |
7222 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
7223 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 7224 | |
0fd88904 | 7225 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
7226 | offset + bit_pos / 8, |
7227 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
7228 | } |
7229 | else | |
7230 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
7231 | } | |
7232 | ||
52ce6436 PH |
7233 | /* Find field with name NAME in object of type TYPE. If found, |
7234 | set the following for each argument that is non-null: | |
7235 | - *FIELD_TYPE_P to the field's type; | |
7236 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
7237 | an object of that type; | |
7238 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
7239 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
7240 | 0 otherwise; | |
7241 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
7242 | fields up to but not including the desired field, or by the total | |
7243 | number of fields if not found. A NULL value of NAME never | |
7244 | matches; the function just counts visible fields in this case. | |
7245 | ||
828d5846 XR |
7246 | Notice that we need to handle when a tagged record hierarchy |
7247 | has some components with the same name, like in this scenario: | |
7248 | ||
7249 | type Top_T is tagged record | |
7250 | N : Integer := 1; | |
7251 | U : Integer := 974; | |
7252 | A : Integer := 48; | |
7253 | end record; | |
7254 | ||
7255 | type Middle_T is new Top.Top_T with record | |
7256 | N : Character := 'a'; | |
7257 | C : Integer := 3; | |
7258 | end record; | |
7259 | ||
7260 | type Bottom_T is new Middle.Middle_T with record | |
7261 | N : Float := 4.0; | |
7262 | C : Character := '5'; | |
7263 | X : Integer := 6; | |
7264 | A : Character := 'J'; | |
7265 | end record; | |
7266 | ||
7267 | Let's say we now have a variable declared and initialized as follow: | |
7268 | ||
7269 | TC : Top_A := new Bottom_T; | |
7270 | ||
7271 | And then we use this variable to call this function | |
7272 | ||
7273 | procedure Assign (Obj: in out Top_T; TV : Integer); | |
7274 | ||
7275 | as follow: | |
7276 | ||
7277 | Assign (Top_T (B), 12); | |
7278 | ||
7279 | Now, we're in the debugger, and we're inside that procedure | |
7280 | then and we want to print the value of obj.c: | |
7281 | ||
7282 | Usually, the tagged record or one of the parent type owns the | |
7283 | component to print and there's no issue but in this particular | |
7284 | case, what does it mean to ask for Obj.C? Since the actual | |
7285 | type for object is type Bottom_T, it could mean two things: type | |
7286 | component C from the Middle_T view, but also component C from | |
7287 | Bottom_T. So in that "undefined" case, when the component is | |
7288 | not found in the non-resolved type (which includes all the | |
7289 | components of the parent type), then resolve it and see if we | |
7290 | get better luck once expanded. | |
7291 | ||
7292 | In the case of homonyms in the derived tagged type, we don't | |
7293 | guaranty anything, and pick the one that's easiest for us | |
7294 | to program. | |
7295 | ||
0963b4bd | 7296 | Returns 1 if found, 0 otherwise. */ |
52ce6436 | 7297 | |
4c4b4cd2 | 7298 | static int |
0d5cff50 | 7299 | find_struct_field (const char *name, struct type *type, int offset, |
76a01679 | 7300 | struct type **field_type_p, |
52ce6436 PH |
7301 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
7302 | int *index_p) | |
4c4b4cd2 PH |
7303 | { |
7304 | int i; | |
828d5846 | 7305 | int parent_offset = -1; |
4c4b4cd2 | 7306 | |
61ee279c | 7307 | type = ada_check_typedef (type); |
76a01679 | 7308 | |
52ce6436 PH |
7309 | if (field_type_p != NULL) |
7310 | *field_type_p = NULL; | |
7311 | if (byte_offset_p != NULL) | |
d5d6fca5 | 7312 | *byte_offset_p = 0; |
52ce6436 PH |
7313 | if (bit_offset_p != NULL) |
7314 | *bit_offset_p = 0; | |
7315 | if (bit_size_p != NULL) | |
7316 | *bit_size_p = 0; | |
7317 | ||
7318 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
7319 | { |
7320 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
7321 | int fld_offset = offset + bit_pos / 8; | |
0d5cff50 | 7322 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
76a01679 | 7323 | |
4c4b4cd2 PH |
7324 | if (t_field_name == NULL) |
7325 | continue; | |
7326 | ||
828d5846 XR |
7327 | else if (ada_is_parent_field (type, i)) |
7328 | { | |
7329 | /* This is a field pointing us to the parent type of a tagged | |
7330 | type. As hinted in this function's documentation, we give | |
7331 | preference to fields in the current record first, so what | |
7332 | we do here is just record the index of this field before | |
7333 | we skip it. If it turns out we couldn't find our field | |
7334 | in the current record, then we'll get back to it and search | |
7335 | inside it whether the field might exist in the parent. */ | |
7336 | ||
7337 | parent_offset = i; | |
7338 | continue; | |
7339 | } | |
7340 | ||
52ce6436 | 7341 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
7342 | { |
7343 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5b4ee69b | 7344 | |
52ce6436 PH |
7345 | if (field_type_p != NULL) |
7346 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
7347 | if (byte_offset_p != NULL) | |
7348 | *byte_offset_p = fld_offset; | |
7349 | if (bit_offset_p != NULL) | |
7350 | *bit_offset_p = bit_pos % 8; | |
7351 | if (bit_size_p != NULL) | |
7352 | *bit_size_p = bit_size; | |
76a01679 JB |
7353 | return 1; |
7354 | } | |
4c4b4cd2 PH |
7355 | else if (ada_is_wrapper_field (type, i)) |
7356 | { | |
52ce6436 PH |
7357 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
7358 | field_type_p, byte_offset_p, bit_offset_p, | |
7359 | bit_size_p, index_p)) | |
76a01679 JB |
7360 | return 1; |
7361 | } | |
4c4b4cd2 PH |
7362 | else if (ada_is_variant_part (type, i)) |
7363 | { | |
52ce6436 PH |
7364 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
7365 | fixed type?? */ | |
4c4b4cd2 | 7366 | int j; |
52ce6436 PH |
7367 | struct type *field_type |
7368 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 7369 | |
52ce6436 | 7370 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 7371 | { |
76a01679 JB |
7372 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
7373 | fld_offset | |
7374 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
7375 | field_type_p, byte_offset_p, | |
52ce6436 | 7376 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 7377 | return 1; |
4c4b4cd2 PH |
7378 | } |
7379 | } | |
52ce6436 PH |
7380 | else if (index_p != NULL) |
7381 | *index_p += 1; | |
4c4b4cd2 | 7382 | } |
828d5846 XR |
7383 | |
7384 | /* Field not found so far. If this is a tagged type which | |
7385 | has a parent, try finding that field in the parent now. */ | |
7386 | ||
7387 | if (parent_offset != -1) | |
7388 | { | |
7389 | int bit_pos = TYPE_FIELD_BITPOS (type, parent_offset); | |
7390 | int fld_offset = offset + bit_pos / 8; | |
7391 | ||
7392 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, parent_offset), | |
7393 | fld_offset, field_type_p, byte_offset_p, | |
7394 | bit_offset_p, bit_size_p, index_p)) | |
7395 | return 1; | |
7396 | } | |
7397 | ||
4c4b4cd2 PH |
7398 | return 0; |
7399 | } | |
7400 | ||
0963b4bd | 7401 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 7402 | |
52ce6436 PH |
7403 | static int |
7404 | num_visible_fields (struct type *type) | |
7405 | { | |
7406 | int n; | |
5b4ee69b | 7407 | |
52ce6436 PH |
7408 | n = 0; |
7409 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
7410 | return n; | |
7411 | } | |
14f9c5c9 | 7412 | |
4c4b4cd2 | 7413 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
7414 | and search in it assuming it has (class) type TYPE. |
7415 | If found, return value, else return NULL. | |
7416 | ||
828d5846 XR |
7417 | Searches recursively through wrapper fields (e.g., '_parent'). |
7418 | ||
7419 | In the case of homonyms in the tagged types, please refer to the | |
7420 | long explanation in find_struct_field's function documentation. */ | |
14f9c5c9 | 7421 | |
4c4b4cd2 | 7422 | static struct value * |
108d56a4 | 7423 | ada_search_struct_field (const char *name, struct value *arg, int offset, |
4c4b4cd2 | 7424 | struct type *type) |
14f9c5c9 AS |
7425 | { |
7426 | int i; | |
828d5846 | 7427 | int parent_offset = -1; |
14f9c5c9 | 7428 | |
5b4ee69b | 7429 | type = ada_check_typedef (type); |
52ce6436 | 7430 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 | 7431 | { |
0d5cff50 | 7432 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 AS |
7433 | |
7434 | if (t_field_name == NULL) | |
4c4b4cd2 | 7435 | continue; |
14f9c5c9 | 7436 | |
828d5846 XR |
7437 | else if (ada_is_parent_field (type, i)) |
7438 | { | |
7439 | /* This is a field pointing us to the parent type of a tagged | |
7440 | type. As hinted in this function's documentation, we give | |
7441 | preference to fields in the current record first, so what | |
7442 | we do here is just record the index of this field before | |
7443 | we skip it. If it turns out we couldn't find our field | |
7444 | in the current record, then we'll get back to it and search | |
7445 | inside it whether the field might exist in the parent. */ | |
7446 | ||
7447 | parent_offset = i; | |
7448 | continue; | |
7449 | } | |
7450 | ||
14f9c5c9 | 7451 | else if (field_name_match (t_field_name, name)) |
4c4b4cd2 | 7452 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
7453 | |
7454 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 7455 | { |
0963b4bd | 7456 | struct value *v = /* Do not let indent join lines here. */ |
06d5cf63 JB |
7457 | ada_search_struct_field (name, arg, |
7458 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
7459 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 7460 | |
4c4b4cd2 PH |
7461 | if (v != NULL) |
7462 | return v; | |
7463 | } | |
14f9c5c9 AS |
7464 | |
7465 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 7466 | { |
0963b4bd | 7467 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 7468 | int j; |
5b4ee69b MS |
7469 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
7470 | i)); | |
4c4b4cd2 PH |
7471 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
7472 | ||
52ce6436 | 7473 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 7474 | { |
0963b4bd MS |
7475 | struct value *v = ada_search_struct_field /* Force line |
7476 | break. */ | |
06d5cf63 JB |
7477 | (name, arg, |
7478 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
7479 | TYPE_FIELD_TYPE (field_type, j)); | |
5b4ee69b | 7480 | |
4c4b4cd2 PH |
7481 | if (v != NULL) |
7482 | return v; | |
7483 | } | |
7484 | } | |
14f9c5c9 | 7485 | } |
828d5846 XR |
7486 | |
7487 | /* Field not found so far. If this is a tagged type which | |
7488 | has a parent, try finding that field in the parent now. */ | |
7489 | ||
7490 | if (parent_offset != -1) | |
7491 | { | |
7492 | struct value *v = ada_search_struct_field ( | |
7493 | name, arg, offset + TYPE_FIELD_BITPOS (type, parent_offset) / 8, | |
7494 | TYPE_FIELD_TYPE (type, parent_offset)); | |
7495 | ||
7496 | if (v != NULL) | |
7497 | return v; | |
7498 | } | |
7499 | ||
14f9c5c9 AS |
7500 | return NULL; |
7501 | } | |
d2e4a39e | 7502 | |
52ce6436 PH |
7503 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
7504 | int, struct type *); | |
7505 | ||
7506 | ||
7507 | /* Return field #INDEX in ARG, where the index is that returned by | |
7508 | * find_struct_field through its INDEX_P argument. Adjust the address | |
7509 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
0963b4bd | 7510 | * If found, return value, else return NULL. */ |
52ce6436 PH |
7511 | |
7512 | static struct value * | |
7513 | ada_index_struct_field (int index, struct value *arg, int offset, | |
7514 | struct type *type) | |
7515 | { | |
7516 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
7517 | } | |
7518 | ||
7519 | ||
7520 | /* Auxiliary function for ada_index_struct_field. Like | |
7521 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
0963b4bd | 7522 | * *INDEX_P. */ |
52ce6436 PH |
7523 | |
7524 | static struct value * | |
7525 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
7526 | struct type *type) | |
7527 | { | |
7528 | int i; | |
7529 | type = ada_check_typedef (type); | |
7530 | ||
7531 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
7532 | { | |
7533 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
7534 | continue; | |
7535 | else if (ada_is_wrapper_field (type, i)) | |
7536 | { | |
0963b4bd | 7537 | struct value *v = /* Do not let indent join lines here. */ |
52ce6436 PH |
7538 | ada_index_struct_field_1 (index_p, arg, |
7539 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
7540 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 7541 | |
52ce6436 PH |
7542 | if (v != NULL) |
7543 | return v; | |
7544 | } | |
7545 | ||
7546 | else if (ada_is_variant_part (type, i)) | |
7547 | { | |
7548 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
0963b4bd | 7549 | find_struct_field. */ |
52ce6436 PH |
7550 | error (_("Cannot assign this kind of variant record")); |
7551 | } | |
7552 | else if (*index_p == 0) | |
7553 | return ada_value_primitive_field (arg, offset, i, type); | |
7554 | else | |
7555 | *index_p -= 1; | |
7556 | } | |
7557 | return NULL; | |
7558 | } | |
7559 | ||
4c4b4cd2 PH |
7560 | /* Given ARG, a value of type (pointer or reference to a)* |
7561 | structure/union, extract the component named NAME from the ultimate | |
7562 | target structure/union and return it as a value with its | |
f5938064 | 7563 | appropriate type. |
14f9c5c9 | 7564 | |
4c4b4cd2 PH |
7565 | The routine searches for NAME among all members of the structure itself |
7566 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
7567 | (e.g., '_parent'). |
7568 | ||
03ee6b2e PH |
7569 | If NO_ERR, then simply return NULL in case of error, rather than |
7570 | calling error. */ | |
14f9c5c9 | 7571 | |
d2e4a39e | 7572 | struct value * |
a121b7c1 | 7573 | ada_value_struct_elt (struct value *arg, const char *name, int no_err) |
14f9c5c9 | 7574 | { |
4c4b4cd2 | 7575 | struct type *t, *t1; |
d2e4a39e | 7576 | struct value *v; |
14f9c5c9 | 7577 | |
4c4b4cd2 | 7578 | v = NULL; |
df407dfe | 7579 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
7580 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
7581 | { | |
7582 | t1 = TYPE_TARGET_TYPE (t); | |
7583 | if (t1 == NULL) | |
03ee6b2e | 7584 | goto BadValue; |
61ee279c | 7585 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 7586 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 7587 | { |
994b9211 | 7588 | arg = coerce_ref (arg); |
76a01679 JB |
7589 | t = t1; |
7590 | } | |
4c4b4cd2 | 7591 | } |
14f9c5c9 | 7592 | |
4c4b4cd2 PH |
7593 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
7594 | { | |
7595 | t1 = TYPE_TARGET_TYPE (t); | |
7596 | if (t1 == NULL) | |
03ee6b2e | 7597 | goto BadValue; |
61ee279c | 7598 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 7599 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
7600 | { |
7601 | arg = value_ind (arg); | |
7602 | t = t1; | |
7603 | } | |
4c4b4cd2 | 7604 | else |
76a01679 | 7605 | break; |
4c4b4cd2 | 7606 | } |
14f9c5c9 | 7607 | |
4c4b4cd2 | 7608 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 7609 | goto BadValue; |
14f9c5c9 | 7610 | |
4c4b4cd2 PH |
7611 | if (t1 == t) |
7612 | v = ada_search_struct_field (name, arg, 0, t); | |
7613 | else | |
7614 | { | |
7615 | int bit_offset, bit_size, byte_offset; | |
7616 | struct type *field_type; | |
7617 | CORE_ADDR address; | |
7618 | ||
76a01679 | 7619 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
b50d69b5 | 7620 | address = value_address (ada_value_ind (arg)); |
4c4b4cd2 | 7621 | else |
b50d69b5 | 7622 | address = value_address (ada_coerce_ref (arg)); |
14f9c5c9 | 7623 | |
828d5846 XR |
7624 | /* Check to see if this is a tagged type. We also need to handle |
7625 | the case where the type is a reference to a tagged type, but | |
7626 | we have to be careful to exclude pointers to tagged types. | |
7627 | The latter should be shown as usual (as a pointer), whereas | |
7628 | a reference should mostly be transparent to the user. */ | |
7629 | ||
7630 | if (ada_is_tagged_type (t1, 0) | |
7631 | || (TYPE_CODE (t1) == TYPE_CODE_REF | |
7632 | && ada_is_tagged_type (TYPE_TARGET_TYPE (t1), 0))) | |
7633 | { | |
7634 | /* We first try to find the searched field in the current type. | |
7635 | If not found then let's look in the fixed type. */ | |
7636 | ||
7637 | if (!find_struct_field (name, t1, 0, | |
7638 | &field_type, &byte_offset, &bit_offset, | |
7639 | &bit_size, NULL)) | |
7640 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, | |
7641 | address, NULL, 1); | |
7642 | } | |
7643 | else | |
7644 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, | |
7645 | address, NULL, 1); | |
7646 | ||
76a01679 JB |
7647 | if (find_struct_field (name, t1, 0, |
7648 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 7649 | &bit_size, NULL)) |
76a01679 JB |
7650 | { |
7651 | if (bit_size != 0) | |
7652 | { | |
714e53ab PH |
7653 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
7654 | arg = ada_coerce_ref (arg); | |
7655 | else | |
7656 | arg = ada_value_ind (arg); | |
76a01679 JB |
7657 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
7658 | bit_offset, bit_size, | |
7659 | field_type); | |
7660 | } | |
7661 | else | |
f5938064 | 7662 | v = value_at_lazy (field_type, address + byte_offset); |
76a01679 JB |
7663 | } |
7664 | } | |
7665 | ||
03ee6b2e PH |
7666 | if (v != NULL || no_err) |
7667 | return v; | |
7668 | else | |
323e0a4a | 7669 | error (_("There is no member named %s."), name); |
14f9c5c9 | 7670 | |
03ee6b2e PH |
7671 | BadValue: |
7672 | if (no_err) | |
7673 | return NULL; | |
7674 | else | |
0963b4bd MS |
7675 | error (_("Attempt to extract a component of " |
7676 | "a value that is not a record.")); | |
14f9c5c9 AS |
7677 | } |
7678 | ||
3b4de39c | 7679 | /* Return a string representation of type TYPE. */ |
99bbb428 | 7680 | |
3b4de39c | 7681 | static std::string |
99bbb428 PA |
7682 | type_as_string (struct type *type) |
7683 | { | |
d7e74731 | 7684 | string_file tmp_stream; |
99bbb428 | 7685 | |
d7e74731 | 7686 | type_print (type, "", &tmp_stream, -1); |
99bbb428 | 7687 | |
d7e74731 | 7688 | return std::move (tmp_stream.string ()); |
99bbb428 PA |
7689 | } |
7690 | ||
14f9c5c9 | 7691 | /* Given a type TYPE, look up the type of the component of type named NAME. |
4c4b4cd2 PH |
7692 | If DISPP is non-null, add its byte displacement from the beginning of a |
7693 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
7694 | work for packed fields). |
7695 | ||
7696 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 7697 | followed by "___". |
14f9c5c9 | 7698 | |
0963b4bd | 7699 | TYPE can be either a struct or union. If REFOK, TYPE may also |
4c4b4cd2 PH |
7700 | be a (pointer or reference)+ to a struct or union, and the |
7701 | ultimate target type will be searched. | |
14f9c5c9 AS |
7702 | |
7703 | Looks recursively into variant clauses and parent types. | |
7704 | ||
828d5846 XR |
7705 | In the case of homonyms in the tagged types, please refer to the |
7706 | long explanation in find_struct_field's function documentation. | |
7707 | ||
4c4b4cd2 PH |
7708 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
7709 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 7710 | |
4c4b4cd2 | 7711 | static struct type * |
a121b7c1 | 7712 | ada_lookup_struct_elt_type (struct type *type, const char *name, int refok, |
988f6b3d | 7713 | int noerr) |
14f9c5c9 AS |
7714 | { |
7715 | int i; | |
828d5846 | 7716 | int parent_offset = -1; |
14f9c5c9 AS |
7717 | |
7718 | if (name == NULL) | |
7719 | goto BadName; | |
7720 | ||
76a01679 | 7721 | if (refok && type != NULL) |
4c4b4cd2 PH |
7722 | while (1) |
7723 | { | |
61ee279c | 7724 | type = ada_check_typedef (type); |
76a01679 JB |
7725 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
7726 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
7727 | break; | |
7728 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 7729 | } |
14f9c5c9 | 7730 | |
76a01679 | 7731 | if (type == NULL |
1265e4aa JB |
7732 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
7733 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 7734 | { |
4c4b4cd2 | 7735 | if (noerr) |
76a01679 | 7736 | return NULL; |
99bbb428 | 7737 | |
3b4de39c PA |
7738 | error (_("Type %s is not a structure or union type"), |
7739 | type != NULL ? type_as_string (type).c_str () : _("(null)")); | |
14f9c5c9 AS |
7740 | } |
7741 | ||
7742 | type = to_static_fixed_type (type); | |
7743 | ||
7744 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
7745 | { | |
0d5cff50 | 7746 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 | 7747 | struct type *t; |
d2e4a39e | 7748 | |
14f9c5c9 | 7749 | if (t_field_name == NULL) |
4c4b4cd2 | 7750 | continue; |
14f9c5c9 | 7751 | |
828d5846 XR |
7752 | else if (ada_is_parent_field (type, i)) |
7753 | { | |
7754 | /* This is a field pointing us to the parent type of a tagged | |
7755 | type. As hinted in this function's documentation, we give | |
7756 | preference to fields in the current record first, so what | |
7757 | we do here is just record the index of this field before | |
7758 | we skip it. If it turns out we couldn't find our field | |
7759 | in the current record, then we'll get back to it and search | |
7760 | inside it whether the field might exist in the parent. */ | |
7761 | ||
7762 | parent_offset = i; | |
7763 | continue; | |
7764 | } | |
7765 | ||
14f9c5c9 | 7766 | else if (field_name_match (t_field_name, name)) |
988f6b3d | 7767 | return TYPE_FIELD_TYPE (type, i); |
14f9c5c9 AS |
7768 | |
7769 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 7770 | { |
4c4b4cd2 | 7771 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, |
988f6b3d | 7772 | 0, 1); |
4c4b4cd2 | 7773 | if (t != NULL) |
988f6b3d | 7774 | return t; |
4c4b4cd2 | 7775 | } |
14f9c5c9 AS |
7776 | |
7777 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
7778 | { |
7779 | int j; | |
5b4ee69b MS |
7780 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
7781 | i)); | |
4c4b4cd2 PH |
7782 | |
7783 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
7784 | { | |
b1f33ddd JB |
7785 | /* FIXME pnh 2008/01/26: We check for a field that is |
7786 | NOT wrapped in a struct, since the compiler sometimes | |
7787 | generates these for unchecked variant types. Revisit | |
0963b4bd | 7788 | if the compiler changes this practice. */ |
0d5cff50 | 7789 | const char *v_field_name = TYPE_FIELD_NAME (field_type, j); |
988f6b3d | 7790 | |
b1f33ddd JB |
7791 | if (v_field_name != NULL |
7792 | && field_name_match (v_field_name, name)) | |
460efde1 | 7793 | t = TYPE_FIELD_TYPE (field_type, j); |
b1f33ddd | 7794 | else |
0963b4bd MS |
7795 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, |
7796 | j), | |
988f6b3d | 7797 | name, 0, 1); |
b1f33ddd | 7798 | |
4c4b4cd2 | 7799 | if (t != NULL) |
988f6b3d | 7800 | return t; |
4c4b4cd2 PH |
7801 | } |
7802 | } | |
14f9c5c9 AS |
7803 | |
7804 | } | |
7805 | ||
828d5846 XR |
7806 | /* Field not found so far. If this is a tagged type which |
7807 | has a parent, try finding that field in the parent now. */ | |
7808 | ||
7809 | if (parent_offset != -1) | |
7810 | { | |
7811 | struct type *t; | |
7812 | ||
7813 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, parent_offset), | |
7814 | name, 0, 1); | |
7815 | if (t != NULL) | |
7816 | return t; | |
7817 | } | |
7818 | ||
14f9c5c9 | 7819 | BadName: |
d2e4a39e | 7820 | if (!noerr) |
14f9c5c9 | 7821 | { |
2b2798cc | 7822 | const char *name_str = name != NULL ? name : _("<null>"); |
99bbb428 PA |
7823 | |
7824 | error (_("Type %s has no component named %s"), | |
3b4de39c | 7825 | type_as_string (type).c_str (), name_str); |
14f9c5c9 AS |
7826 | } |
7827 | ||
7828 | return NULL; | |
7829 | } | |
7830 | ||
b1f33ddd JB |
7831 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7832 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
7833 | represents an unchecked union (that is, the variant part of a | |
0963b4bd | 7834 | record that is named in an Unchecked_Union pragma). */ |
b1f33ddd JB |
7835 | |
7836 | static int | |
7837 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
7838 | { | |
a121b7c1 | 7839 | const char *discrim_name = ada_variant_discrim_name (var_type); |
5b4ee69b | 7840 | |
988f6b3d | 7841 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1) == NULL); |
b1f33ddd JB |
7842 | } |
7843 | ||
7844 | ||
14f9c5c9 AS |
7845 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7846 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
7847 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
7848 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 7849 | |
d2e4a39e | 7850 | int |
ebf56fd3 | 7851 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 7852 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
7853 | { |
7854 | int others_clause; | |
7855 | int i; | |
a121b7c1 | 7856 | const char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
7857 | struct value *outer; |
7858 | struct value *discrim; | |
14f9c5c9 AS |
7859 | LONGEST discrim_val; |
7860 | ||
012370f6 TT |
7861 | /* Using plain value_from_contents_and_address here causes problems |
7862 | because we will end up trying to resolve a type that is currently | |
7863 | being constructed. */ | |
7864 | outer = value_from_contents_and_address_unresolved (outer_type, | |
7865 | outer_valaddr, 0); | |
0c281816 JB |
7866 | discrim = ada_value_struct_elt (outer, discrim_name, 1); |
7867 | if (discrim == NULL) | |
14f9c5c9 | 7868 | return -1; |
0c281816 | 7869 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
7870 | |
7871 | others_clause = -1; | |
7872 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
7873 | { | |
7874 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 7875 | others_clause = i; |
14f9c5c9 | 7876 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 7877 | return i; |
14f9c5c9 AS |
7878 | } |
7879 | ||
7880 | return others_clause; | |
7881 | } | |
d2e4a39e | 7882 | \f |
14f9c5c9 AS |
7883 | |
7884 | ||
4c4b4cd2 | 7885 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
7886 | |
7887 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
7888 | (i.e., a size that is not statically recorded in the debugging | |
7889 | data) does not accurately reflect the size or layout of the value. | |
7890 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 7891 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
7892 | |
7893 | /* There is a subtle and tricky problem here. In general, we cannot | |
7894 | determine the size of dynamic records without its data. However, | |
7895 | the 'struct value' data structure, which GDB uses to represent | |
7896 | quantities in the inferior process (the target), requires the size | |
7897 | of the type at the time of its allocation in order to reserve space | |
7898 | for GDB's internal copy of the data. That's why the | |
7899 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 7900 | rather than struct value*s. |
14f9c5c9 AS |
7901 | |
7902 | However, GDB's internal history variables ($1, $2, etc.) are | |
7903 | struct value*s containing internal copies of the data that are not, in | |
7904 | general, the same as the data at their corresponding addresses in | |
7905 | the target. Fortunately, the types we give to these values are all | |
7906 | conventional, fixed-size types (as per the strategy described | |
7907 | above), so that we don't usually have to perform the | |
7908 | 'to_fixed_xxx_type' conversions to look at their values. | |
7909 | Unfortunately, there is one exception: if one of the internal | |
7910 | history variables is an array whose elements are unconstrained | |
7911 | records, then we will need to create distinct fixed types for each | |
7912 | element selected. */ | |
7913 | ||
7914 | /* The upshot of all of this is that many routines take a (type, host | |
7915 | address, target address) triple as arguments to represent a value. | |
7916 | The host address, if non-null, is supposed to contain an internal | |
7917 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 7918 | target at the target address. */ |
14f9c5c9 AS |
7919 | |
7920 | /* Assuming that VAL0 represents a pointer value, the result of | |
7921 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 7922 | dynamic-sized types. */ |
14f9c5c9 | 7923 | |
d2e4a39e AS |
7924 | struct value * |
7925 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 7926 | { |
c48db5ca | 7927 | struct value *val = value_ind (val0); |
5b4ee69b | 7928 | |
b50d69b5 JG |
7929 | if (ada_is_tagged_type (value_type (val), 0)) |
7930 | val = ada_tag_value_at_base_address (val); | |
7931 | ||
4c4b4cd2 | 7932 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
7933 | } |
7934 | ||
7935 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
7936 | qualifiers on VAL0. */ |
7937 | ||
d2e4a39e AS |
7938 | static struct value * |
7939 | ada_coerce_ref (struct value *val0) | |
7940 | { | |
df407dfe | 7941 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
7942 | { |
7943 | struct value *val = val0; | |
5b4ee69b | 7944 | |
994b9211 | 7945 | val = coerce_ref (val); |
b50d69b5 JG |
7946 | |
7947 | if (ada_is_tagged_type (value_type (val), 0)) | |
7948 | val = ada_tag_value_at_base_address (val); | |
7949 | ||
4c4b4cd2 | 7950 | return ada_to_fixed_value (val); |
d2e4a39e AS |
7951 | } |
7952 | else | |
14f9c5c9 AS |
7953 | return val0; |
7954 | } | |
7955 | ||
7956 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 7957 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
7958 | |
7959 | static unsigned int | |
ebf56fd3 | 7960 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
7961 | { |
7962 | return (off + alignment - 1) & ~(alignment - 1); | |
7963 | } | |
7964 | ||
4c4b4cd2 | 7965 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
7966 | |
7967 | static unsigned int | |
ebf56fd3 | 7968 | field_alignment (struct type *type, int f) |
14f9c5c9 | 7969 | { |
d2e4a39e | 7970 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 7971 | int len; |
14f9c5c9 AS |
7972 | int align_offset; |
7973 | ||
64a1bf19 JB |
7974 | /* The field name should never be null, unless the debugging information |
7975 | is somehow malformed. In this case, we assume the field does not | |
7976 | require any alignment. */ | |
7977 | if (name == NULL) | |
7978 | return 1; | |
7979 | ||
7980 | len = strlen (name); | |
7981 | ||
4c4b4cd2 PH |
7982 | if (!isdigit (name[len - 1])) |
7983 | return 1; | |
14f9c5c9 | 7984 | |
d2e4a39e | 7985 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
7986 | align_offset = len - 2; |
7987 | else | |
7988 | align_offset = len - 1; | |
7989 | ||
61012eef | 7990 | if (align_offset < 7 || !startswith (name + align_offset - 6, "___XV")) |
14f9c5c9 AS |
7991 | return TARGET_CHAR_BIT; |
7992 | ||
4c4b4cd2 PH |
7993 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
7994 | } | |
7995 | ||
852dff6c | 7996 | /* Find a typedef or tag symbol named NAME. Ignores ambiguity. */ |
4c4b4cd2 | 7997 | |
852dff6c JB |
7998 | static struct symbol * |
7999 | ada_find_any_type_symbol (const char *name) | |
4c4b4cd2 PH |
8000 | { |
8001 | struct symbol *sym; | |
8002 | ||
8003 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
4186eb54 | 8004 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
4c4b4cd2 PH |
8005 | return sym; |
8006 | ||
4186eb54 KS |
8007 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); |
8008 | return sym; | |
14f9c5c9 AS |
8009 | } |
8010 | ||
dddfab26 UW |
8011 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
8012 | solely for types defined by debug info, it will not search the GDB | |
8013 | primitive types. */ | |
4c4b4cd2 | 8014 | |
852dff6c | 8015 | static struct type * |
ebf56fd3 | 8016 | ada_find_any_type (const char *name) |
14f9c5c9 | 8017 | { |
852dff6c | 8018 | struct symbol *sym = ada_find_any_type_symbol (name); |
14f9c5c9 | 8019 | |
14f9c5c9 | 8020 | if (sym != NULL) |
dddfab26 | 8021 | return SYMBOL_TYPE (sym); |
14f9c5c9 | 8022 | |
dddfab26 | 8023 | return NULL; |
14f9c5c9 AS |
8024 | } |
8025 | ||
739593e0 JB |
8026 | /* Given NAME_SYM and an associated BLOCK, find a "renaming" symbol |
8027 | associated with NAME_SYM's name. NAME_SYM may itself be a renaming | |
8028 | symbol, in which case it is returned. Otherwise, this looks for | |
8029 | symbols whose name is that of NAME_SYM suffixed with "___XR". | |
8030 | Return symbol if found, and NULL otherwise. */ | |
4c4b4cd2 PH |
8031 | |
8032 | struct symbol * | |
270140bd | 8033 | ada_find_renaming_symbol (struct symbol *name_sym, const struct block *block) |
aeb5907d | 8034 | { |
739593e0 | 8035 | const char *name = SYMBOL_LINKAGE_NAME (name_sym); |
aeb5907d JB |
8036 | struct symbol *sym; |
8037 | ||
739593e0 JB |
8038 | if (strstr (name, "___XR") != NULL) |
8039 | return name_sym; | |
8040 | ||
aeb5907d JB |
8041 | sym = find_old_style_renaming_symbol (name, block); |
8042 | ||
8043 | if (sym != NULL) | |
8044 | return sym; | |
8045 | ||
0963b4bd | 8046 | /* Not right yet. FIXME pnh 7/20/2007. */ |
852dff6c | 8047 | sym = ada_find_any_type_symbol (name); |
aeb5907d JB |
8048 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) |
8049 | return sym; | |
8050 | else | |
8051 | return NULL; | |
8052 | } | |
8053 | ||
8054 | static struct symbol * | |
270140bd | 8055 | find_old_style_renaming_symbol (const char *name, const struct block *block) |
4c4b4cd2 | 8056 | { |
7f0df278 | 8057 | const struct symbol *function_sym = block_linkage_function (block); |
4c4b4cd2 PH |
8058 | char *rename; |
8059 | ||
8060 | if (function_sym != NULL) | |
8061 | { | |
8062 | /* If the symbol is defined inside a function, NAME is not fully | |
8063 | qualified. This means we need to prepend the function name | |
8064 | as well as adding the ``___XR'' suffix to build the name of | |
8065 | the associated renaming symbol. */ | |
0d5cff50 | 8066 | const char *function_name = SYMBOL_LINKAGE_NAME (function_sym); |
529cad9c PH |
8067 | /* Function names sometimes contain suffixes used |
8068 | for instance to qualify nested subprograms. When building | |
8069 | the XR type name, we need to make sure that this suffix is | |
8070 | not included. So do not include any suffix in the function | |
8071 | name length below. */ | |
69fadcdf | 8072 | int function_name_len = ada_name_prefix_len (function_name); |
76a01679 JB |
8073 | const int rename_len = function_name_len + 2 /* "__" */ |
8074 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 8075 | |
529cad9c | 8076 | /* Strip the suffix if necessary. */ |
69fadcdf JB |
8077 | ada_remove_trailing_digits (function_name, &function_name_len); |
8078 | ada_remove_po_subprogram_suffix (function_name, &function_name_len); | |
8079 | ada_remove_Xbn_suffix (function_name, &function_name_len); | |
529cad9c | 8080 | |
4c4b4cd2 PH |
8081 | /* Library-level functions are a special case, as GNAT adds |
8082 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 8083 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
8084 | have this prefix, so we need to skip this prefix if present. */ |
8085 | if (function_name_len > 5 /* "_ada_" */ | |
8086 | && strstr (function_name, "_ada_") == function_name) | |
69fadcdf JB |
8087 | { |
8088 | function_name += 5; | |
8089 | function_name_len -= 5; | |
8090 | } | |
4c4b4cd2 PH |
8091 | |
8092 | rename = (char *) alloca (rename_len * sizeof (char)); | |
69fadcdf JB |
8093 | strncpy (rename, function_name, function_name_len); |
8094 | xsnprintf (rename + function_name_len, rename_len - function_name_len, | |
8095 | "__%s___XR", name); | |
4c4b4cd2 PH |
8096 | } |
8097 | else | |
8098 | { | |
8099 | const int rename_len = strlen (name) + 6; | |
5b4ee69b | 8100 | |
4c4b4cd2 | 8101 | rename = (char *) alloca (rename_len * sizeof (char)); |
88c15c34 | 8102 | xsnprintf (rename, rename_len * sizeof (char), "%s___XR", name); |
4c4b4cd2 PH |
8103 | } |
8104 | ||
852dff6c | 8105 | return ada_find_any_type_symbol (rename); |
4c4b4cd2 PH |
8106 | } |
8107 | ||
14f9c5c9 | 8108 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 8109 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 8110 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
8111 | otherwise return 0. */ |
8112 | ||
14f9c5c9 | 8113 | int |
d2e4a39e | 8114 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
8115 | { |
8116 | if (type1 == NULL) | |
8117 | return 1; | |
8118 | else if (type0 == NULL) | |
8119 | return 0; | |
8120 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
8121 | return 1; | |
8122 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
8123 | return 0; | |
4c4b4cd2 PH |
8124 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
8125 | return 1; | |
ad82864c | 8126 | else if (ada_is_constrained_packed_array_type (type0)) |
14f9c5c9 | 8127 | return 1; |
4c4b4cd2 PH |
8128 | else if (ada_is_array_descriptor_type (type0) |
8129 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 8130 | return 1; |
aeb5907d JB |
8131 | else |
8132 | { | |
8133 | const char *type0_name = type_name_no_tag (type0); | |
8134 | const char *type1_name = type_name_no_tag (type1); | |
8135 | ||
8136 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
8137 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
8138 | return 1; | |
8139 | } | |
14f9c5c9 AS |
8140 | return 0; |
8141 | } | |
8142 | ||
8143 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
8144 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
8145 | ||
0d5cff50 | 8146 | const char * |
d2e4a39e | 8147 | ada_type_name (struct type *type) |
14f9c5c9 | 8148 | { |
d2e4a39e | 8149 | if (type == NULL) |
14f9c5c9 AS |
8150 | return NULL; |
8151 | else if (TYPE_NAME (type) != NULL) | |
8152 | return TYPE_NAME (type); | |
8153 | else | |
8154 | return TYPE_TAG_NAME (type); | |
8155 | } | |
8156 | ||
b4ba55a1 JB |
8157 | /* Search the list of "descriptive" types associated to TYPE for a type |
8158 | whose name is NAME. */ | |
8159 | ||
8160 | static struct type * | |
8161 | find_parallel_type_by_descriptive_type (struct type *type, const char *name) | |
8162 | { | |
931e5bc3 | 8163 | struct type *result, *tmp; |
b4ba55a1 | 8164 | |
c6044dd1 JB |
8165 | if (ada_ignore_descriptive_types_p) |
8166 | return NULL; | |
8167 | ||
b4ba55a1 JB |
8168 | /* If there no descriptive-type info, then there is no parallel type |
8169 | to be found. */ | |
8170 | if (!HAVE_GNAT_AUX_INFO (type)) | |
8171 | return NULL; | |
8172 | ||
8173 | result = TYPE_DESCRIPTIVE_TYPE (type); | |
8174 | while (result != NULL) | |
8175 | { | |
0d5cff50 | 8176 | const char *result_name = ada_type_name (result); |
b4ba55a1 JB |
8177 | |
8178 | if (result_name == NULL) | |
8179 | { | |
8180 | warning (_("unexpected null name on descriptive type")); | |
8181 | return NULL; | |
8182 | } | |
8183 | ||
8184 | /* If the names match, stop. */ | |
8185 | if (strcmp (result_name, name) == 0) | |
8186 | break; | |
8187 | ||
8188 | /* Otherwise, look at the next item on the list, if any. */ | |
8189 | if (HAVE_GNAT_AUX_INFO (result)) | |
931e5bc3 JG |
8190 | tmp = TYPE_DESCRIPTIVE_TYPE (result); |
8191 | else | |
8192 | tmp = NULL; | |
8193 | ||
8194 | /* If not found either, try after having resolved the typedef. */ | |
8195 | if (tmp != NULL) | |
8196 | result = tmp; | |
b4ba55a1 | 8197 | else |
931e5bc3 | 8198 | { |
f168693b | 8199 | result = check_typedef (result); |
931e5bc3 JG |
8200 | if (HAVE_GNAT_AUX_INFO (result)) |
8201 | result = TYPE_DESCRIPTIVE_TYPE (result); | |
8202 | else | |
8203 | result = NULL; | |
8204 | } | |
b4ba55a1 JB |
8205 | } |
8206 | ||
8207 | /* If we didn't find a match, see whether this is a packed array. With | |
8208 | older compilers, the descriptive type information is either absent or | |
8209 | irrelevant when it comes to packed arrays so the above lookup fails. | |
8210 | Fall back to using a parallel lookup by name in this case. */ | |
12ab9e09 | 8211 | if (result == NULL && ada_is_constrained_packed_array_type (type)) |
b4ba55a1 JB |
8212 | return ada_find_any_type (name); |
8213 | ||
8214 | return result; | |
8215 | } | |
8216 | ||
8217 | /* Find a parallel type to TYPE with the specified NAME, using the | |
8218 | descriptive type taken from the debugging information, if available, | |
8219 | and otherwise using the (slower) name-based method. */ | |
8220 | ||
8221 | static struct type * | |
8222 | ada_find_parallel_type_with_name (struct type *type, const char *name) | |
8223 | { | |
8224 | struct type *result = NULL; | |
8225 | ||
8226 | if (HAVE_GNAT_AUX_INFO (type)) | |
8227 | result = find_parallel_type_by_descriptive_type (type, name); | |
8228 | else | |
8229 | result = ada_find_any_type (name); | |
8230 | ||
8231 | return result; | |
8232 | } | |
8233 | ||
8234 | /* Same as above, but specify the name of the parallel type by appending | |
4c4b4cd2 | 8235 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 8236 | |
d2e4a39e | 8237 | struct type * |
ebf56fd3 | 8238 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 8239 | { |
0d5cff50 | 8240 | char *name; |
fe978cb0 | 8241 | const char *type_name = ada_type_name (type); |
14f9c5c9 | 8242 | int len; |
d2e4a39e | 8243 | |
fe978cb0 | 8244 | if (type_name == NULL) |
14f9c5c9 AS |
8245 | return NULL; |
8246 | ||
fe978cb0 | 8247 | len = strlen (type_name); |
14f9c5c9 | 8248 | |
b4ba55a1 | 8249 | name = (char *) alloca (len + strlen (suffix) + 1); |
14f9c5c9 | 8250 | |
fe978cb0 | 8251 | strcpy (name, type_name); |
14f9c5c9 AS |
8252 | strcpy (name + len, suffix); |
8253 | ||
b4ba55a1 | 8254 | return ada_find_parallel_type_with_name (type, name); |
14f9c5c9 AS |
8255 | } |
8256 | ||
14f9c5c9 | 8257 | /* If TYPE is a variable-size record type, return the corresponding template |
4c4b4cd2 | 8258 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 8259 | |
d2e4a39e AS |
8260 | static struct type * |
8261 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 8262 | { |
61ee279c | 8263 | type = ada_check_typedef (type); |
14f9c5c9 AS |
8264 | |
8265 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 8266 | || ada_type_name (type) == NULL) |
14f9c5c9 | 8267 | return NULL; |
d2e4a39e | 8268 | else |
14f9c5c9 AS |
8269 | { |
8270 | int len = strlen (ada_type_name (type)); | |
5b4ee69b | 8271 | |
4c4b4cd2 PH |
8272 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
8273 | return type; | |
14f9c5c9 | 8274 | else |
4c4b4cd2 | 8275 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
8276 | } |
8277 | } | |
8278 | ||
8279 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 8280 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 8281 | |
d2e4a39e AS |
8282 | static int |
8283 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
8284 | { |
8285 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
5b4ee69b | 8286 | |
d2e4a39e | 8287 | return name != NULL |
14f9c5c9 AS |
8288 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
8289 | && strstr (name, "___XVL") != NULL; | |
8290 | } | |
8291 | ||
4c4b4cd2 PH |
8292 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
8293 | represent a variant record type. */ | |
14f9c5c9 | 8294 | |
d2e4a39e | 8295 | static int |
4c4b4cd2 | 8296 | variant_field_index (struct type *type) |
14f9c5c9 AS |
8297 | { |
8298 | int f; | |
8299 | ||
4c4b4cd2 PH |
8300 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
8301 | return -1; | |
8302 | ||
8303 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
8304 | { | |
8305 | if (ada_is_variant_part (type, f)) | |
8306 | return f; | |
8307 | } | |
8308 | return -1; | |
14f9c5c9 AS |
8309 | } |
8310 | ||
4c4b4cd2 PH |
8311 | /* A record type with no fields. */ |
8312 | ||
d2e4a39e | 8313 | static struct type * |
fe978cb0 | 8314 | empty_record (struct type *templ) |
14f9c5c9 | 8315 | { |
fe978cb0 | 8316 | struct type *type = alloc_type_copy (templ); |
5b4ee69b | 8317 | |
14f9c5c9 AS |
8318 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
8319 | TYPE_NFIELDS (type) = 0; | |
8320 | TYPE_FIELDS (type) = NULL; | |
b1f33ddd | 8321 | INIT_CPLUS_SPECIFIC (type); |
14f9c5c9 AS |
8322 | TYPE_NAME (type) = "<empty>"; |
8323 | TYPE_TAG_NAME (type) = NULL; | |
14f9c5c9 AS |
8324 | TYPE_LENGTH (type) = 0; |
8325 | return type; | |
8326 | } | |
8327 | ||
8328 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
8329 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
8330 | the beginning of this section) VAL according to GNAT conventions. | |
8331 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 8332 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
8333 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
8334 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 8335 | of the variant. |
14f9c5c9 | 8336 | |
4c4b4cd2 PH |
8337 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
8338 | length are not statically known are discarded. As a consequence, | |
8339 | VALADDR, ADDRESS and DVAL0 are ignored. | |
8340 | ||
8341 | NOTE: Limitations: For now, we assume that dynamic fields and | |
8342 | variants occupy whole numbers of bytes. However, they need not be | |
8343 | byte-aligned. */ | |
8344 | ||
8345 | struct type * | |
10a2c479 | 8346 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 8347 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
8348 | CORE_ADDR address, struct value *dval0, |
8349 | int keep_dynamic_fields) | |
14f9c5c9 | 8350 | { |
d2e4a39e AS |
8351 | struct value *mark = value_mark (); |
8352 | struct value *dval; | |
8353 | struct type *rtype; | |
14f9c5c9 | 8354 | int nfields, bit_len; |
4c4b4cd2 | 8355 | int variant_field; |
14f9c5c9 | 8356 | long off; |
d94e4f4f | 8357 | int fld_bit_len; |
14f9c5c9 AS |
8358 | int f; |
8359 | ||
4c4b4cd2 PH |
8360 | /* Compute the number of fields in this record type that are going |
8361 | to be processed: unless keep_dynamic_fields, this includes only | |
8362 | fields whose position and length are static will be processed. */ | |
8363 | if (keep_dynamic_fields) | |
8364 | nfields = TYPE_NFIELDS (type); | |
8365 | else | |
8366 | { | |
8367 | nfields = 0; | |
76a01679 | 8368 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
8369 | && !ada_is_variant_part (type, nfields) |
8370 | && !is_dynamic_field (type, nfields)) | |
8371 | nfields++; | |
8372 | } | |
8373 | ||
e9bb382b | 8374 | rtype = alloc_type_copy (type); |
14f9c5c9 AS |
8375 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
8376 | INIT_CPLUS_SPECIFIC (rtype); | |
8377 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 8378 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
8379 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
8380 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
8381 | TYPE_NAME (rtype) = ada_type_name (type); | |
8382 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 8383 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 | 8384 | |
d2e4a39e AS |
8385 | off = 0; |
8386 | bit_len = 0; | |
4c4b4cd2 PH |
8387 | variant_field = -1; |
8388 | ||
14f9c5c9 AS |
8389 | for (f = 0; f < nfields; f += 1) |
8390 | { | |
6c038f32 PH |
8391 | off = align_value (off, field_alignment (type, f)) |
8392 | + TYPE_FIELD_BITPOS (type, f); | |
945b3a32 | 8393 | SET_FIELD_BITPOS (TYPE_FIELD (rtype, f), off); |
d2e4a39e | 8394 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 8395 | |
d2e4a39e | 8396 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
8397 | { |
8398 | variant_field = f; | |
d94e4f4f | 8399 | fld_bit_len = 0; |
4c4b4cd2 | 8400 | } |
14f9c5c9 | 8401 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 | 8402 | { |
284614f0 JB |
8403 | const gdb_byte *field_valaddr = valaddr; |
8404 | CORE_ADDR field_address = address; | |
8405 | struct type *field_type = | |
8406 | TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f)); | |
8407 | ||
4c4b4cd2 | 8408 | if (dval0 == NULL) |
b5304971 JG |
8409 | { |
8410 | /* rtype's length is computed based on the run-time | |
8411 | value of discriminants. If the discriminants are not | |
8412 | initialized, the type size may be completely bogus and | |
0963b4bd | 8413 | GDB may fail to allocate a value for it. So check the |
b5304971 | 8414 | size first before creating the value. */ |
c1b5a1a6 | 8415 | ada_ensure_varsize_limit (rtype); |
012370f6 TT |
8416 | /* Using plain value_from_contents_and_address here |
8417 | causes problems because we will end up trying to | |
8418 | resolve a type that is currently being | |
8419 | constructed. */ | |
8420 | dval = value_from_contents_and_address_unresolved (rtype, | |
8421 | valaddr, | |
8422 | address); | |
9f1f738a | 8423 | rtype = value_type (dval); |
b5304971 | 8424 | } |
4c4b4cd2 PH |
8425 | else |
8426 | dval = dval0; | |
8427 | ||
284614f0 JB |
8428 | /* If the type referenced by this field is an aligner type, we need |
8429 | to unwrap that aligner type, because its size might not be set. | |
8430 | Keeping the aligner type would cause us to compute the wrong | |
8431 | size for this field, impacting the offset of the all the fields | |
8432 | that follow this one. */ | |
8433 | if (ada_is_aligner_type (field_type)) | |
8434 | { | |
8435 | long field_offset = TYPE_FIELD_BITPOS (field_type, f); | |
8436 | ||
8437 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
8438 | field_address = cond_offset_target (field_address, field_offset); | |
8439 | field_type = ada_aligned_type (field_type); | |
8440 | } | |
8441 | ||
8442 | field_valaddr = cond_offset_host (field_valaddr, | |
8443 | off / TARGET_CHAR_BIT); | |
8444 | field_address = cond_offset_target (field_address, | |
8445 | off / TARGET_CHAR_BIT); | |
8446 | ||
8447 | /* Get the fixed type of the field. Note that, in this case, | |
8448 | we do not want to get the real type out of the tag: if | |
8449 | the current field is the parent part of a tagged record, | |
8450 | we will get the tag of the object. Clearly wrong: the real | |
8451 | type of the parent is not the real type of the child. We | |
8452 | would end up in an infinite loop. */ | |
8453 | field_type = ada_get_base_type (field_type); | |
8454 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
8455 | field_address, dval, 0); | |
27f2a97b JB |
8456 | /* If the field size is already larger than the maximum |
8457 | object size, then the record itself will necessarily | |
8458 | be larger than the maximum object size. We need to make | |
8459 | this check now, because the size might be so ridiculously | |
8460 | large (due to an uninitialized variable in the inferior) | |
8461 | that it would cause an overflow when adding it to the | |
8462 | record size. */ | |
c1b5a1a6 | 8463 | ada_ensure_varsize_limit (field_type); |
284614f0 JB |
8464 | |
8465 | TYPE_FIELD_TYPE (rtype, f) = field_type; | |
4c4b4cd2 | 8466 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
27f2a97b JB |
8467 | /* The multiplication can potentially overflow. But because |
8468 | the field length has been size-checked just above, and | |
8469 | assuming that the maximum size is a reasonable value, | |
8470 | an overflow should not happen in practice. So rather than | |
8471 | adding overflow recovery code to this already complex code, | |
8472 | we just assume that it's not going to happen. */ | |
d94e4f4f | 8473 | fld_bit_len = |
4c4b4cd2 PH |
8474 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; |
8475 | } | |
14f9c5c9 | 8476 | else |
4c4b4cd2 | 8477 | { |
5ded5331 JB |
8478 | /* Note: If this field's type is a typedef, it is important |
8479 | to preserve the typedef layer. | |
8480 | ||
8481 | Otherwise, we might be transforming a typedef to a fat | |
8482 | pointer (encoding a pointer to an unconstrained array), | |
8483 | into a basic fat pointer (encoding an unconstrained | |
8484 | array). As both types are implemented using the same | |
8485 | structure, the typedef is the only clue which allows us | |
8486 | to distinguish between the two options. Stripping it | |
8487 | would prevent us from printing this field appropriately. */ | |
8488 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
4c4b4cd2 PH |
8489 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
8490 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
d94e4f4f | 8491 | fld_bit_len = |
4c4b4cd2 PH |
8492 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); |
8493 | else | |
5ded5331 JB |
8494 | { |
8495 | struct type *field_type = TYPE_FIELD_TYPE (type, f); | |
8496 | ||
8497 | /* We need to be careful of typedefs when computing | |
8498 | the length of our field. If this is a typedef, | |
8499 | get the length of the target type, not the length | |
8500 | of the typedef. */ | |
8501 | if (TYPE_CODE (field_type) == TYPE_CODE_TYPEDEF) | |
8502 | field_type = ada_typedef_target_type (field_type); | |
8503 | ||
8504 | fld_bit_len = | |
8505 | TYPE_LENGTH (ada_check_typedef (field_type)) * TARGET_CHAR_BIT; | |
8506 | } | |
4c4b4cd2 | 8507 | } |
14f9c5c9 | 8508 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 8509 | bit_len = off + fld_bit_len; |
d94e4f4f | 8510 | off += fld_bit_len; |
4c4b4cd2 PH |
8511 | TYPE_LENGTH (rtype) = |
8512 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 8513 | } |
4c4b4cd2 PH |
8514 | |
8515 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 8516 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
8517 | the record. This can happen in the presence of representation |
8518 | clauses. */ | |
8519 | if (variant_field >= 0) | |
8520 | { | |
8521 | struct type *branch_type; | |
8522 | ||
8523 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
8524 | ||
8525 | if (dval0 == NULL) | |
9f1f738a | 8526 | { |
012370f6 TT |
8527 | /* Using plain value_from_contents_and_address here causes |
8528 | problems because we will end up trying to resolve a type | |
8529 | that is currently being constructed. */ | |
8530 | dval = value_from_contents_and_address_unresolved (rtype, valaddr, | |
8531 | address); | |
9f1f738a SA |
8532 | rtype = value_type (dval); |
8533 | } | |
4c4b4cd2 PH |
8534 | else |
8535 | dval = dval0; | |
8536 | ||
8537 | branch_type = | |
8538 | to_fixed_variant_branch_type | |
8539 | (TYPE_FIELD_TYPE (type, variant_field), | |
8540 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
8541 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
8542 | if (branch_type == NULL) | |
8543 | { | |
8544 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
8545 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
8546 | TYPE_NFIELDS (rtype) -= 1; | |
8547 | } | |
8548 | else | |
8549 | { | |
8550 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
8551 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
8552 | fld_bit_len = | |
8553 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
8554 | TARGET_CHAR_BIT; | |
8555 | if (off + fld_bit_len > bit_len) | |
8556 | bit_len = off + fld_bit_len; | |
8557 | TYPE_LENGTH (rtype) = | |
8558 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
8559 | } | |
8560 | } | |
8561 | ||
714e53ab PH |
8562 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
8563 | should contain the alignment of that record, which should be a strictly | |
8564 | positive value. If null or negative, then something is wrong, most | |
8565 | probably in the debug info. In that case, we don't round up the size | |
0963b4bd | 8566 | of the resulting type. If this record is not part of another structure, |
714e53ab PH |
8567 | the current RTYPE length might be good enough for our purposes. */ |
8568 | if (TYPE_LENGTH (type) <= 0) | |
8569 | { | |
323e0a4a AC |
8570 | if (TYPE_NAME (rtype)) |
8571 | warning (_("Invalid type size for `%s' detected: %d."), | |
8572 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
8573 | else | |
8574 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
8575 | TYPE_LENGTH (type)); | |
714e53ab PH |
8576 | } |
8577 | else | |
8578 | { | |
8579 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
8580 | TYPE_LENGTH (type)); | |
8581 | } | |
14f9c5c9 AS |
8582 | |
8583 | value_free_to_mark (mark); | |
d2e4a39e | 8584 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 8585 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
8586 | return rtype; |
8587 | } | |
8588 | ||
4c4b4cd2 PH |
8589 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
8590 | of 1. */ | |
14f9c5c9 | 8591 | |
d2e4a39e | 8592 | static struct type * |
fc1a4b47 | 8593 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
8594 | CORE_ADDR address, struct value *dval0) |
8595 | { | |
8596 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
8597 | address, dval0, 1); | |
8598 | } | |
8599 | ||
8600 | /* An ordinary record type in which ___XVL-convention fields and | |
8601 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
8602 | static approximations, containing all possible fields. Uses | |
8603 | no runtime values. Useless for use in values, but that's OK, | |
8604 | since the results are used only for type determinations. Works on both | |
8605 | structs and unions. Representation note: to save space, we memorize | |
8606 | the result of this function in the TYPE_TARGET_TYPE of the | |
8607 | template type. */ | |
8608 | ||
8609 | static struct type * | |
8610 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
8611 | { |
8612 | struct type *type; | |
8613 | int nfields; | |
8614 | int f; | |
8615 | ||
9e195661 PMR |
8616 | /* No need no do anything if the input type is already fixed. */ |
8617 | if (TYPE_FIXED_INSTANCE (type0)) | |
8618 | return type0; | |
8619 | ||
8620 | /* Likewise if we already have computed the static approximation. */ | |
4c4b4cd2 PH |
8621 | if (TYPE_TARGET_TYPE (type0) != NULL) |
8622 | return TYPE_TARGET_TYPE (type0); | |
8623 | ||
9e195661 | 8624 | /* Don't clone TYPE0 until we are sure we are going to need a copy. */ |
4c4b4cd2 | 8625 | type = type0; |
9e195661 PMR |
8626 | nfields = TYPE_NFIELDS (type0); |
8627 | ||
8628 | /* Whether or not we cloned TYPE0, cache the result so that we don't do | |
8629 | recompute all over next time. */ | |
8630 | TYPE_TARGET_TYPE (type0) = type; | |
14f9c5c9 AS |
8631 | |
8632 | for (f = 0; f < nfields; f += 1) | |
8633 | { | |
460efde1 | 8634 | struct type *field_type = TYPE_FIELD_TYPE (type0, f); |
4c4b4cd2 | 8635 | struct type *new_type; |
14f9c5c9 | 8636 | |
4c4b4cd2 | 8637 | if (is_dynamic_field (type0, f)) |
460efde1 JB |
8638 | { |
8639 | field_type = ada_check_typedef (field_type); | |
8640 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
8641 | } | |
14f9c5c9 | 8642 | else |
f192137b | 8643 | new_type = static_unwrap_type (field_type); |
9e195661 PMR |
8644 | |
8645 | if (new_type != field_type) | |
8646 | { | |
8647 | /* Clone TYPE0 only the first time we get a new field type. */ | |
8648 | if (type == type0) | |
8649 | { | |
8650 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); | |
8651 | TYPE_CODE (type) = TYPE_CODE (type0); | |
8652 | INIT_CPLUS_SPECIFIC (type); | |
8653 | TYPE_NFIELDS (type) = nfields; | |
8654 | TYPE_FIELDS (type) = (struct field *) | |
8655 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
8656 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
8657 | sizeof (struct field) * nfields); | |
8658 | TYPE_NAME (type) = ada_type_name (type0); | |
8659 | TYPE_TAG_NAME (type) = NULL; | |
8660 | TYPE_FIXED_INSTANCE (type) = 1; | |
8661 | TYPE_LENGTH (type) = 0; | |
8662 | } | |
8663 | TYPE_FIELD_TYPE (type, f) = new_type; | |
8664 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
8665 | } | |
14f9c5c9 | 8666 | } |
9e195661 | 8667 | |
14f9c5c9 AS |
8668 | return type; |
8669 | } | |
8670 | ||
4c4b4cd2 | 8671 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
8672 | whose address in memory is ADDRESS, returns a revision of TYPE, |
8673 | which should be a non-dynamic-sized record, in which the variant | |
8674 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
8675 | for discriminant values in DVAL0, which can be NULL if the record |
8676 | contains the necessary discriminant values. */ | |
8677 | ||
d2e4a39e | 8678 | static struct type * |
fc1a4b47 | 8679 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 8680 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 8681 | { |
d2e4a39e | 8682 | struct value *mark = value_mark (); |
4c4b4cd2 | 8683 | struct value *dval; |
d2e4a39e | 8684 | struct type *rtype; |
14f9c5c9 AS |
8685 | struct type *branch_type; |
8686 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 8687 | int variant_field = variant_field_index (type); |
14f9c5c9 | 8688 | |
4c4b4cd2 | 8689 | if (variant_field == -1) |
14f9c5c9 AS |
8690 | return type; |
8691 | ||
4c4b4cd2 | 8692 | if (dval0 == NULL) |
9f1f738a SA |
8693 | { |
8694 | dval = value_from_contents_and_address (type, valaddr, address); | |
8695 | type = value_type (dval); | |
8696 | } | |
4c4b4cd2 PH |
8697 | else |
8698 | dval = dval0; | |
8699 | ||
e9bb382b | 8700 | rtype = alloc_type_copy (type); |
14f9c5c9 | 8701 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
4c4b4cd2 PH |
8702 | INIT_CPLUS_SPECIFIC (rtype); |
8703 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
8704 | TYPE_FIELDS (rtype) = |
8705 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
8706 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 8707 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
8708 | TYPE_NAME (rtype) = ada_type_name (type); |
8709 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 8710 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 AS |
8711 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
8712 | ||
4c4b4cd2 PH |
8713 | branch_type = to_fixed_variant_branch_type |
8714 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 8715 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
8716 | TYPE_FIELD_BITPOS (type, variant_field) |
8717 | / TARGET_CHAR_BIT), | |
d2e4a39e | 8718 | cond_offset_target (address, |
4c4b4cd2 PH |
8719 | TYPE_FIELD_BITPOS (type, variant_field) |
8720 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 8721 | if (branch_type == NULL) |
14f9c5c9 | 8722 | { |
4c4b4cd2 | 8723 | int f; |
5b4ee69b | 8724 | |
4c4b4cd2 PH |
8725 | for (f = variant_field + 1; f < nfields; f += 1) |
8726 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 8727 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
8728 | } |
8729 | else | |
8730 | { | |
4c4b4cd2 PH |
8731 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
8732 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
8733 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 8734 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 8735 | } |
4c4b4cd2 | 8736 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 8737 | |
4c4b4cd2 | 8738 | value_free_to_mark (mark); |
14f9c5c9 AS |
8739 | return rtype; |
8740 | } | |
8741 | ||
8742 | /* An ordinary record type (with fixed-length fields) that describes | |
8743 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
8744 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
8745 | should be in DVAL, a record value; it may be NULL if the object |
8746 | at ADDR itself contains any necessary discriminant values. | |
8747 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
8748 | values from the record are needed. Except in the case that DVAL, | |
8749 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
8750 | unchecked) is replaced by a particular branch of the variant. | |
8751 | ||
8752 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
8753 | is questionable and may be removed. It can arise during the | |
8754 | processing of an unconstrained-array-of-record type where all the | |
8755 | variant branches have exactly the same size. This is because in | |
8756 | such cases, the compiler does not bother to use the XVS convention | |
8757 | when encoding the record. I am currently dubious of this | |
8758 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 8759 | |
d2e4a39e | 8760 | static struct type * |
fc1a4b47 | 8761 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 8762 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 8763 | { |
d2e4a39e | 8764 | struct type *templ_type; |
14f9c5c9 | 8765 | |
876cecd0 | 8766 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
8767 | return type0; |
8768 | ||
d2e4a39e | 8769 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
8770 | |
8771 | if (templ_type != NULL) | |
8772 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
8773 | else if (variant_field_index (type0) >= 0) |
8774 | { | |
8775 | if (dval == NULL && valaddr == NULL && address == 0) | |
8776 | return type0; | |
8777 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
8778 | dval); | |
8779 | } | |
14f9c5c9 AS |
8780 | else |
8781 | { | |
876cecd0 | 8782 | TYPE_FIXED_INSTANCE (type0) = 1; |
14f9c5c9 AS |
8783 | return type0; |
8784 | } | |
8785 | ||
8786 | } | |
8787 | ||
8788 | /* An ordinary record type (with fixed-length fields) that describes | |
8789 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
8790 | union type. Any necessary discriminants' values should be in DVAL, | |
8791 | a record value. That is, this routine selects the appropriate | |
8792 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd | 8793 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
0963b4bd | 8794 | it represents a variant subject to a pragma Unchecked_Union. */ |
14f9c5c9 | 8795 | |
d2e4a39e | 8796 | static struct type * |
fc1a4b47 | 8797 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 8798 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
8799 | { |
8800 | int which; | |
d2e4a39e AS |
8801 | struct type *templ_type; |
8802 | struct type *var_type; | |
14f9c5c9 AS |
8803 | |
8804 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
8805 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 8806 | else |
14f9c5c9 AS |
8807 | var_type = var_type0; |
8808 | ||
8809 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
8810 | ||
8811 | if (templ_type != NULL) | |
8812 | var_type = templ_type; | |
8813 | ||
b1f33ddd JB |
8814 | if (is_unchecked_variant (var_type, value_type (dval))) |
8815 | return var_type0; | |
d2e4a39e AS |
8816 | which = |
8817 | ada_which_variant_applies (var_type, | |
0fd88904 | 8818 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
8819 | |
8820 | if (which < 0) | |
e9bb382b | 8821 | return empty_record (var_type); |
14f9c5c9 | 8822 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 8823 | return to_fixed_record_type |
d2e4a39e AS |
8824 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
8825 | valaddr, address, dval); | |
4c4b4cd2 | 8826 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
8827 | return |
8828 | to_fixed_record_type | |
8829 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
8830 | else |
8831 | return TYPE_FIELD_TYPE (var_type, which); | |
8832 | } | |
8833 | ||
8908fca5 JB |
8834 | /* Assuming RANGE_TYPE is a TYPE_CODE_RANGE, return nonzero if |
8835 | ENCODING_TYPE, a type following the GNAT conventions for discrete | |
8836 | type encodings, only carries redundant information. */ | |
8837 | ||
8838 | static int | |
8839 | ada_is_redundant_range_encoding (struct type *range_type, | |
8840 | struct type *encoding_type) | |
8841 | { | |
108d56a4 | 8842 | const char *bounds_str; |
8908fca5 JB |
8843 | int n; |
8844 | LONGEST lo, hi; | |
8845 | ||
8846 | gdb_assert (TYPE_CODE (range_type) == TYPE_CODE_RANGE); | |
8847 | ||
005e2509 JB |
8848 | if (TYPE_CODE (get_base_type (range_type)) |
8849 | != TYPE_CODE (get_base_type (encoding_type))) | |
8850 | { | |
8851 | /* The compiler probably used a simple base type to describe | |
8852 | the range type instead of the range's actual base type, | |
8853 | expecting us to get the real base type from the encoding | |
8854 | anyway. In this situation, the encoding cannot be ignored | |
8855 | as redundant. */ | |
8856 | return 0; | |
8857 | } | |
8858 | ||
8908fca5 JB |
8859 | if (is_dynamic_type (range_type)) |
8860 | return 0; | |
8861 | ||
8862 | if (TYPE_NAME (encoding_type) == NULL) | |
8863 | return 0; | |
8864 | ||
8865 | bounds_str = strstr (TYPE_NAME (encoding_type), "___XDLU_"); | |
8866 | if (bounds_str == NULL) | |
8867 | return 0; | |
8868 | ||
8869 | n = 8; /* Skip "___XDLU_". */ | |
8870 | if (!ada_scan_number (bounds_str, n, &lo, &n)) | |
8871 | return 0; | |
8872 | if (TYPE_LOW_BOUND (range_type) != lo) | |
8873 | return 0; | |
8874 | ||
8875 | n += 2; /* Skip the "__" separator between the two bounds. */ | |
8876 | if (!ada_scan_number (bounds_str, n, &hi, &n)) | |
8877 | return 0; | |
8878 | if (TYPE_HIGH_BOUND (range_type) != hi) | |
8879 | return 0; | |
8880 | ||
8881 | return 1; | |
8882 | } | |
8883 | ||
8884 | /* Given the array type ARRAY_TYPE, return nonzero if DESC_TYPE, | |
8885 | a type following the GNAT encoding for describing array type | |
8886 | indices, only carries redundant information. */ | |
8887 | ||
8888 | static int | |
8889 | ada_is_redundant_index_type_desc (struct type *array_type, | |
8890 | struct type *desc_type) | |
8891 | { | |
8892 | struct type *this_layer = check_typedef (array_type); | |
8893 | int i; | |
8894 | ||
8895 | for (i = 0; i < TYPE_NFIELDS (desc_type); i++) | |
8896 | { | |
8897 | if (!ada_is_redundant_range_encoding (TYPE_INDEX_TYPE (this_layer), | |
8898 | TYPE_FIELD_TYPE (desc_type, i))) | |
8899 | return 0; | |
8900 | this_layer = check_typedef (TYPE_TARGET_TYPE (this_layer)); | |
8901 | } | |
8902 | ||
8903 | return 1; | |
8904 | } | |
8905 | ||
14f9c5c9 AS |
8906 | /* Assuming that TYPE0 is an array type describing the type of a value |
8907 | at ADDR, and that DVAL describes a record containing any | |
8908 | discriminants used in TYPE0, returns a type for the value that | |
8909 | contains no dynamic components (that is, no components whose sizes | |
8910 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
8911 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 8912 | varsize_limit. */ |
14f9c5c9 | 8913 | |
d2e4a39e AS |
8914 | static struct type * |
8915 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 8916 | int ignore_too_big) |
14f9c5c9 | 8917 | { |
d2e4a39e AS |
8918 | struct type *index_type_desc; |
8919 | struct type *result; | |
ad82864c | 8920 | int constrained_packed_array_p; |
931e5bc3 | 8921 | static const char *xa_suffix = "___XA"; |
14f9c5c9 | 8922 | |
b0dd7688 | 8923 | type0 = ada_check_typedef (type0); |
284614f0 | 8924 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 | 8925 | return type0; |
14f9c5c9 | 8926 | |
ad82864c JB |
8927 | constrained_packed_array_p = ada_is_constrained_packed_array_type (type0); |
8928 | if (constrained_packed_array_p) | |
8929 | type0 = decode_constrained_packed_array_type (type0); | |
284614f0 | 8930 | |
931e5bc3 JG |
8931 | index_type_desc = ada_find_parallel_type (type0, xa_suffix); |
8932 | ||
8933 | /* As mentioned in exp_dbug.ads, for non bit-packed arrays an | |
8934 | encoding suffixed with 'P' may still be generated. If so, | |
8935 | it should be used to find the XA type. */ | |
8936 | ||
8937 | if (index_type_desc == NULL) | |
8938 | { | |
1da0522e | 8939 | const char *type_name = ada_type_name (type0); |
931e5bc3 | 8940 | |
1da0522e | 8941 | if (type_name != NULL) |
931e5bc3 | 8942 | { |
1da0522e | 8943 | const int len = strlen (type_name); |
931e5bc3 JG |
8944 | char *name = (char *) alloca (len + strlen (xa_suffix)); |
8945 | ||
1da0522e | 8946 | if (type_name[len - 1] == 'P') |
931e5bc3 | 8947 | { |
1da0522e | 8948 | strcpy (name, type_name); |
931e5bc3 JG |
8949 | strcpy (name + len - 1, xa_suffix); |
8950 | index_type_desc = ada_find_parallel_type_with_name (type0, name); | |
8951 | } | |
8952 | } | |
8953 | } | |
8954 | ||
28c85d6c | 8955 | ada_fixup_array_indexes_type (index_type_desc); |
8908fca5 JB |
8956 | if (index_type_desc != NULL |
8957 | && ada_is_redundant_index_type_desc (type0, index_type_desc)) | |
8958 | { | |
8959 | /* Ignore this ___XA parallel type, as it does not bring any | |
8960 | useful information. This allows us to avoid creating fixed | |
8961 | versions of the array's index types, which would be identical | |
8962 | to the original ones. This, in turn, can also help avoid | |
8963 | the creation of fixed versions of the array itself. */ | |
8964 | index_type_desc = NULL; | |
8965 | } | |
8966 | ||
14f9c5c9 AS |
8967 | if (index_type_desc == NULL) |
8968 | { | |
61ee279c | 8969 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
5b4ee69b | 8970 | |
14f9c5c9 | 8971 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
8972 | depend on the contents of the array in properly constructed |
8973 | debugging data. */ | |
529cad9c PH |
8974 | /* Create a fixed version of the array element type. |
8975 | We're not providing the address of an element here, | |
e1d5a0d2 | 8976 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
8977 | the conversion. This should not be a problem, since arrays of |
8978 | unconstrained objects are not allowed. In particular, all | |
8979 | the elements of an array of a tagged type should all be of | |
8980 | the same type specified in the debugging info. No need to | |
8981 | consult the object tag. */ | |
1ed6ede0 | 8982 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 8983 | |
284614f0 JB |
8984 | /* Make sure we always create a new array type when dealing with |
8985 | packed array types, since we're going to fix-up the array | |
8986 | type length and element bitsize a little further down. */ | |
ad82864c | 8987 | if (elt_type0 == elt_type && !constrained_packed_array_p) |
4c4b4cd2 | 8988 | result = type0; |
14f9c5c9 | 8989 | else |
e9bb382b | 8990 | result = create_array_type (alloc_type_copy (type0), |
4c4b4cd2 | 8991 | elt_type, TYPE_INDEX_TYPE (type0)); |
14f9c5c9 AS |
8992 | } |
8993 | else | |
8994 | { | |
8995 | int i; | |
8996 | struct type *elt_type0; | |
8997 | ||
8998 | elt_type0 = type0; | |
8999 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 9000 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
9001 | |
9002 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
9003 | depend on the contents of the array in properly constructed |
9004 | debugging data. */ | |
529cad9c PH |
9005 | /* Create a fixed version of the array element type. |
9006 | We're not providing the address of an element here, | |
e1d5a0d2 | 9007 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
9008 | the conversion. This should not be a problem, since arrays of |
9009 | unconstrained objects are not allowed. In particular, all | |
9010 | the elements of an array of a tagged type should all be of | |
9011 | the same type specified in the debugging info. No need to | |
9012 | consult the object tag. */ | |
1ed6ede0 JB |
9013 | result = |
9014 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
1ce677a4 UW |
9015 | |
9016 | elt_type0 = type0; | |
14f9c5c9 | 9017 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
9018 | { |
9019 | struct type *range_type = | |
28c85d6c | 9020 | to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, i), dval); |
5b4ee69b | 9021 | |
e9bb382b | 9022 | result = create_array_type (alloc_type_copy (elt_type0), |
4c4b4cd2 | 9023 | result, range_type); |
1ce677a4 | 9024 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
4c4b4cd2 | 9025 | } |
d2e4a39e | 9026 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 9027 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
9028 | } |
9029 | ||
2e6fda7d JB |
9030 | /* We want to preserve the type name. This can be useful when |
9031 | trying to get the type name of a value that has already been | |
9032 | printed (for instance, if the user did "print VAR; whatis $". */ | |
9033 | TYPE_NAME (result) = TYPE_NAME (type0); | |
9034 | ||
ad82864c | 9035 | if (constrained_packed_array_p) |
284614f0 JB |
9036 | { |
9037 | /* So far, the resulting type has been created as if the original | |
9038 | type was a regular (non-packed) array type. As a result, the | |
9039 | bitsize of the array elements needs to be set again, and the array | |
9040 | length needs to be recomputed based on that bitsize. */ | |
9041 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
9042 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
9043 | ||
9044 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
9045 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
9046 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
9047 | TYPE_LENGTH (result)++; | |
9048 | } | |
9049 | ||
876cecd0 | 9050 | TYPE_FIXED_INSTANCE (result) = 1; |
14f9c5c9 | 9051 | return result; |
d2e4a39e | 9052 | } |
14f9c5c9 AS |
9053 | |
9054 | ||
9055 | /* A standard type (containing no dynamically sized components) | |
9056 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
9057 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 9058 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
9059 | ADDRESS or in VALADDR contains these discriminants. |
9060 | ||
1ed6ede0 JB |
9061 | If CHECK_TAG is not null, in the case of tagged types, this function |
9062 | attempts to locate the object's tag and use it to compute the actual | |
9063 | type. However, when ADDRESS is null, we cannot use it to determine the | |
9064 | location of the tag, and therefore compute the tagged type's actual type. | |
9065 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 9066 | |
f192137b JB |
9067 | static struct type * |
9068 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 9069 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 9070 | { |
61ee279c | 9071 | type = ada_check_typedef (type); |
d2e4a39e AS |
9072 | switch (TYPE_CODE (type)) |
9073 | { | |
9074 | default: | |
14f9c5c9 | 9075 | return type; |
d2e4a39e | 9076 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 9077 | { |
76a01679 | 9078 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
9079 | struct type *fixed_record_type = |
9080 | to_fixed_record_type (type, valaddr, address, NULL); | |
5b4ee69b | 9081 | |
529cad9c PH |
9082 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
9083 | then we can determine its tag, and compute the object's actual | |
0963b4bd | 9084 | type from there. Note that we have to use the fixed record |
1ed6ede0 JB |
9085 | type (the parent part of the record may have dynamic fields |
9086 | and the way the location of _tag is expressed may depend on | |
9087 | them). */ | |
529cad9c | 9088 | |
1ed6ede0 | 9089 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 | 9090 | { |
b50d69b5 JG |
9091 | struct value *tag = |
9092 | value_tag_from_contents_and_address | |
9093 | (fixed_record_type, | |
9094 | valaddr, | |
9095 | address); | |
9096 | struct type *real_type = type_from_tag (tag); | |
9097 | struct value *obj = | |
9098 | value_from_contents_and_address (fixed_record_type, | |
9099 | valaddr, | |
9100 | address); | |
9f1f738a | 9101 | fixed_record_type = value_type (obj); |
76a01679 | 9102 | if (real_type != NULL) |
b50d69b5 JG |
9103 | return to_fixed_record_type |
9104 | (real_type, NULL, | |
9105 | value_address (ada_tag_value_at_base_address (obj)), NULL); | |
76a01679 | 9106 | } |
4af88198 JB |
9107 | |
9108 | /* Check to see if there is a parallel ___XVZ variable. | |
9109 | If there is, then it provides the actual size of our type. */ | |
9110 | else if (ada_type_name (fixed_record_type) != NULL) | |
9111 | { | |
0d5cff50 | 9112 | const char *name = ada_type_name (fixed_record_type); |
224c3ddb SM |
9113 | char *xvz_name |
9114 | = (char *) alloca (strlen (name) + 7 /* "___XVZ\0" */); | |
eccab96d | 9115 | bool xvz_found = false; |
4af88198 JB |
9116 | LONGEST size; |
9117 | ||
88c15c34 | 9118 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
eccab96d JB |
9119 | TRY |
9120 | { | |
9121 | xvz_found = get_int_var_value (xvz_name, size); | |
9122 | } | |
9123 | CATCH (except, RETURN_MASK_ERROR) | |
9124 | { | |
9125 | /* We found the variable, but somehow failed to read | |
9126 | its value. Rethrow the same error, but with a little | |
9127 | bit more information, to help the user understand | |
9128 | what went wrong (Eg: the variable might have been | |
9129 | optimized out). */ | |
9130 | throw_error (except.error, | |
9131 | _("unable to read value of %s (%s)"), | |
9132 | xvz_name, except.message); | |
9133 | } | |
9134 | END_CATCH | |
9135 | ||
9136 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) | |
4af88198 JB |
9137 | { |
9138 | fixed_record_type = copy_type (fixed_record_type); | |
9139 | TYPE_LENGTH (fixed_record_type) = size; | |
9140 | ||
9141 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
9142 | observed this when the debugging info is STABS, and | |
9143 | apparently it is something that is hard to fix. | |
9144 | ||
9145 | In practice, we don't need the actual type definition | |
9146 | at all, because the presence of the XVZ variable allows us | |
9147 | to assume that there must be a XVS type as well, which we | |
9148 | should be able to use later, when we need the actual type | |
9149 | definition. | |
9150 | ||
9151 | In the meantime, pretend that the "fixed" type we are | |
9152 | returning is NOT a stub, because this can cause trouble | |
9153 | when using this type to create new types targeting it. | |
9154 | Indeed, the associated creation routines often check | |
9155 | whether the target type is a stub and will try to replace | |
0963b4bd | 9156 | it, thus using a type with the wrong size. This, in turn, |
4af88198 JB |
9157 | might cause the new type to have the wrong size too. |
9158 | Consider the case of an array, for instance, where the size | |
9159 | of the array is computed from the number of elements in | |
9160 | our array multiplied by the size of its element. */ | |
9161 | TYPE_STUB (fixed_record_type) = 0; | |
9162 | } | |
9163 | } | |
1ed6ede0 | 9164 | return fixed_record_type; |
4c4b4cd2 | 9165 | } |
d2e4a39e | 9166 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 9167 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
9168 | case TYPE_CODE_UNION: |
9169 | if (dval == NULL) | |
4c4b4cd2 | 9170 | return type; |
d2e4a39e | 9171 | else |
4c4b4cd2 | 9172 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 9173 | } |
14f9c5c9 AS |
9174 | } |
9175 | ||
f192137b JB |
9176 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
9177 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
96dbd2c1 JB |
9178 | |
9179 | The typedef layer needs be preserved in order to differentiate between | |
9180 | arrays and array pointers when both types are implemented using the same | |
9181 | fat pointer. In the array pointer case, the pointer is encoded as | |
9182 | a typedef of the pointer type. For instance, considering: | |
9183 | ||
9184 | type String_Access is access String; | |
9185 | S1 : String_Access := null; | |
9186 | ||
9187 | To the debugger, S1 is defined as a typedef of type String. But | |
9188 | to the user, it is a pointer. So if the user tries to print S1, | |
9189 | we should not dereference the array, but print the array address | |
9190 | instead. | |
9191 | ||
9192 | If we didn't preserve the typedef layer, we would lose the fact that | |
9193 | the type is to be presented as a pointer (needs de-reference before | |
9194 | being printed). And we would also use the source-level type name. */ | |
f192137b JB |
9195 | |
9196 | struct type * | |
9197 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
9198 | CORE_ADDR address, struct value *dval, int check_tag) | |
9199 | ||
9200 | { | |
9201 | struct type *fixed_type = | |
9202 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
9203 | ||
96dbd2c1 JB |
9204 | /* If TYPE is a typedef and its target type is the same as the FIXED_TYPE, |
9205 | then preserve the typedef layer. | |
9206 | ||
9207 | Implementation note: We can only check the main-type portion of | |
9208 | the TYPE and FIXED_TYPE, because eliminating the typedef layer | |
9209 | from TYPE now returns a type that has the same instance flags | |
9210 | as TYPE. For instance, if TYPE is a "typedef const", and its | |
9211 | target type is a "struct", then the typedef elimination will return | |
9212 | a "const" version of the target type. See check_typedef for more | |
9213 | details about how the typedef layer elimination is done. | |
9214 | ||
9215 | brobecker/2010-11-19: It seems to me that the only case where it is | |
9216 | useful to preserve the typedef layer is when dealing with fat pointers. | |
9217 | Perhaps, we could add a check for that and preserve the typedef layer | |
9218 | only in that situation. But this seems unecessary so far, probably | |
9219 | because we call check_typedef/ada_check_typedef pretty much everywhere. | |
9220 | */ | |
f192137b | 9221 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF |
720d1a40 | 9222 | && (TYPE_MAIN_TYPE (ada_typedef_target_type (type)) |
96dbd2c1 | 9223 | == TYPE_MAIN_TYPE (fixed_type))) |
f192137b JB |
9224 | return type; |
9225 | ||
9226 | return fixed_type; | |
9227 | } | |
9228 | ||
14f9c5c9 | 9229 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 9230 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 9231 | |
d2e4a39e AS |
9232 | static struct type * |
9233 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 9234 | { |
d2e4a39e | 9235 | struct type *type; |
14f9c5c9 AS |
9236 | |
9237 | if (type0 == NULL) | |
9238 | return NULL; | |
9239 | ||
876cecd0 | 9240 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
9241 | return type0; |
9242 | ||
61ee279c | 9243 | type0 = ada_check_typedef (type0); |
d2e4a39e | 9244 | |
14f9c5c9 AS |
9245 | switch (TYPE_CODE (type0)) |
9246 | { | |
9247 | default: | |
9248 | return type0; | |
9249 | case TYPE_CODE_STRUCT: | |
9250 | type = dynamic_template_type (type0); | |
d2e4a39e | 9251 | if (type != NULL) |
4c4b4cd2 PH |
9252 | return template_to_static_fixed_type (type); |
9253 | else | |
9254 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
9255 | case TYPE_CODE_UNION: |
9256 | type = ada_find_parallel_type (type0, "___XVU"); | |
9257 | if (type != NULL) | |
4c4b4cd2 PH |
9258 | return template_to_static_fixed_type (type); |
9259 | else | |
9260 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
9261 | } |
9262 | } | |
9263 | ||
4c4b4cd2 PH |
9264 | /* A static approximation of TYPE with all type wrappers removed. */ |
9265 | ||
d2e4a39e AS |
9266 | static struct type * |
9267 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
9268 | { |
9269 | if (ada_is_aligner_type (type)) | |
9270 | { | |
61ee279c | 9271 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 9272 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 9273 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
9274 | |
9275 | return static_unwrap_type (type1); | |
9276 | } | |
d2e4a39e | 9277 | else |
14f9c5c9 | 9278 | { |
d2e4a39e | 9279 | struct type *raw_real_type = ada_get_base_type (type); |
5b4ee69b | 9280 | |
d2e4a39e | 9281 | if (raw_real_type == type) |
4c4b4cd2 | 9282 | return type; |
14f9c5c9 | 9283 | else |
4c4b4cd2 | 9284 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
9285 | } |
9286 | } | |
9287 | ||
9288 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 9289 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
9290 | type Foo; |
9291 | type FooP is access Foo; | |
9292 | V: FooP; | |
9293 | type Foo is array ...; | |
4c4b4cd2 | 9294 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
9295 | cross-references to such types, we instead substitute for FooP a |
9296 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 9297 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
9298 | |
9299 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
9300 | exists, otherwise TYPE. */ |
9301 | ||
d2e4a39e | 9302 | struct type * |
61ee279c | 9303 | ada_check_typedef (struct type *type) |
14f9c5c9 | 9304 | { |
727e3d2e JB |
9305 | if (type == NULL) |
9306 | return NULL; | |
9307 | ||
720d1a40 JB |
9308 | /* If our type is a typedef type of a fat pointer, then we're done. |
9309 | We don't want to strip the TYPE_CODE_TYPDEF layer, because this is | |
9310 | what allows us to distinguish between fat pointers that represent | |
9311 | array types, and fat pointers that represent array access types | |
9312 | (in both cases, the compiler implements them as fat pointers). */ | |
9313 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
9314 | && is_thick_pntr (ada_typedef_target_type (type))) | |
9315 | return type; | |
9316 | ||
f168693b | 9317 | type = check_typedef (type); |
14f9c5c9 | 9318 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
529cad9c | 9319 | || !TYPE_STUB (type) |
14f9c5c9 AS |
9320 | || TYPE_TAG_NAME (type) == NULL) |
9321 | return type; | |
d2e4a39e | 9322 | else |
14f9c5c9 | 9323 | { |
0d5cff50 | 9324 | const char *name = TYPE_TAG_NAME (type); |
d2e4a39e | 9325 | struct type *type1 = ada_find_any_type (name); |
5b4ee69b | 9326 | |
05e522ef JB |
9327 | if (type1 == NULL) |
9328 | return type; | |
9329 | ||
9330 | /* TYPE1 might itself be a TYPE_CODE_TYPEDEF (this can happen with | |
9331 | stubs pointing to arrays, as we don't create symbols for array | |
3a867c22 JB |
9332 | types, only for the typedef-to-array types). If that's the case, |
9333 | strip the typedef layer. */ | |
9334 | if (TYPE_CODE (type1) == TYPE_CODE_TYPEDEF) | |
9335 | type1 = ada_check_typedef (type1); | |
9336 | ||
9337 | return type1; | |
14f9c5c9 AS |
9338 | } |
9339 | } | |
9340 | ||
9341 | /* A value representing the data at VALADDR/ADDRESS as described by | |
9342 | type TYPE0, but with a standard (static-sized) type that correctly | |
9343 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
9344 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 9345 | creation of struct values]. */ |
14f9c5c9 | 9346 | |
4c4b4cd2 PH |
9347 | static struct value * |
9348 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
9349 | struct value *val0) | |
14f9c5c9 | 9350 | { |
1ed6ede0 | 9351 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
5b4ee69b | 9352 | |
14f9c5c9 AS |
9353 | if (type == type0 && val0 != NULL) |
9354 | return val0; | |
cc0e770c JB |
9355 | |
9356 | if (VALUE_LVAL (val0) != lval_memory) | |
9357 | { | |
9358 | /* Our value does not live in memory; it could be a convenience | |
9359 | variable, for instance. Create a not_lval value using val0's | |
9360 | contents. */ | |
9361 | return value_from_contents (type, value_contents (val0)); | |
9362 | } | |
9363 | ||
9364 | return value_from_contents_and_address (type, 0, address); | |
4c4b4cd2 PH |
9365 | } |
9366 | ||
9367 | /* A value representing VAL, but with a standard (static-sized) type | |
9368 | that correctly describes it. Does not necessarily create a new | |
9369 | value. */ | |
9370 | ||
0c3acc09 | 9371 | struct value * |
4c4b4cd2 PH |
9372 | ada_to_fixed_value (struct value *val) |
9373 | { | |
c48db5ca JB |
9374 | val = unwrap_value (val); |
9375 | val = ada_to_fixed_value_create (value_type (val), | |
9376 | value_address (val), | |
9377 | val); | |
9378 | return val; | |
14f9c5c9 | 9379 | } |
d2e4a39e | 9380 | \f |
14f9c5c9 | 9381 | |
14f9c5c9 AS |
9382 | /* Attributes */ |
9383 | ||
4c4b4cd2 PH |
9384 | /* Table mapping attribute numbers to names. |
9385 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 9386 | |
d2e4a39e | 9387 | static const char *attribute_names[] = { |
14f9c5c9 AS |
9388 | "<?>", |
9389 | ||
d2e4a39e | 9390 | "first", |
14f9c5c9 AS |
9391 | "last", |
9392 | "length", | |
9393 | "image", | |
14f9c5c9 AS |
9394 | "max", |
9395 | "min", | |
4c4b4cd2 PH |
9396 | "modulus", |
9397 | "pos", | |
9398 | "size", | |
9399 | "tag", | |
14f9c5c9 | 9400 | "val", |
14f9c5c9 AS |
9401 | 0 |
9402 | }; | |
9403 | ||
d2e4a39e | 9404 | const char * |
4c4b4cd2 | 9405 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 9406 | { |
4c4b4cd2 PH |
9407 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
9408 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
9409 | else |
9410 | return attribute_names[0]; | |
9411 | } | |
9412 | ||
4c4b4cd2 | 9413 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 9414 | |
4c4b4cd2 PH |
9415 | static LONGEST |
9416 | pos_atr (struct value *arg) | |
14f9c5c9 | 9417 | { |
24209737 PH |
9418 | struct value *val = coerce_ref (arg); |
9419 | struct type *type = value_type (val); | |
aa715135 | 9420 | LONGEST result; |
14f9c5c9 | 9421 | |
d2e4a39e | 9422 | if (!discrete_type_p (type)) |
323e0a4a | 9423 | error (_("'POS only defined on discrete types")); |
14f9c5c9 | 9424 | |
aa715135 JG |
9425 | if (!discrete_position (type, value_as_long (val), &result)) |
9426 | error (_("enumeration value is invalid: can't find 'POS")); | |
14f9c5c9 | 9427 | |
aa715135 | 9428 | return result; |
4c4b4cd2 PH |
9429 | } |
9430 | ||
9431 | static struct value * | |
3cb382c9 | 9432 | value_pos_atr (struct type *type, struct value *arg) |
4c4b4cd2 | 9433 | { |
3cb382c9 | 9434 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
9435 | } |
9436 | ||
4c4b4cd2 | 9437 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 9438 | |
d2e4a39e AS |
9439 | static struct value * |
9440 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 9441 | { |
d2e4a39e | 9442 | if (!discrete_type_p (type)) |
323e0a4a | 9443 | error (_("'VAL only defined on discrete types")); |
df407dfe | 9444 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 9445 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
9446 | |
9447 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
9448 | { | |
9449 | long pos = value_as_long (arg); | |
5b4ee69b | 9450 | |
14f9c5c9 | 9451 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) |
323e0a4a | 9452 | error (_("argument to 'VAL out of range")); |
14e75d8e | 9453 | return value_from_longest (type, TYPE_FIELD_ENUMVAL (type, pos)); |
14f9c5c9 AS |
9454 | } |
9455 | else | |
9456 | return value_from_longest (type, value_as_long (arg)); | |
9457 | } | |
14f9c5c9 | 9458 | \f |
d2e4a39e | 9459 | |
4c4b4cd2 | 9460 | /* Evaluation */ |
14f9c5c9 | 9461 | |
4c4b4cd2 PH |
9462 | /* True if TYPE appears to be an Ada character type. |
9463 | [At the moment, this is true only for Character and Wide_Character; | |
9464 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 9465 | |
d2e4a39e AS |
9466 | int |
9467 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 9468 | { |
7b9f71f2 JB |
9469 | const char *name; |
9470 | ||
9471 | /* If the type code says it's a character, then assume it really is, | |
9472 | and don't check any further. */ | |
9473 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
9474 | return 1; | |
9475 | ||
9476 | /* Otherwise, assume it's a character type iff it is a discrete type | |
9477 | with a known character type name. */ | |
9478 | name = ada_type_name (type); | |
9479 | return (name != NULL | |
9480 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
9481 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
9482 | && (strcmp (name, "character") == 0 | |
9483 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 9484 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 9485 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
9486 | } |
9487 | ||
4c4b4cd2 | 9488 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
9489 | |
9490 | int | |
ebf56fd3 | 9491 | ada_is_string_type (struct type *type) |
14f9c5c9 | 9492 | { |
61ee279c | 9493 | type = ada_check_typedef (type); |
d2e4a39e | 9494 | if (type != NULL |
14f9c5c9 | 9495 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
9496 | && (ada_is_simple_array_type (type) |
9497 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
9498 | && ada_array_arity (type) == 1) |
9499 | { | |
9500 | struct type *elttype = ada_array_element_type (type, 1); | |
9501 | ||
9502 | return ada_is_character_type (elttype); | |
9503 | } | |
d2e4a39e | 9504 | else |
14f9c5c9 AS |
9505 | return 0; |
9506 | } | |
9507 | ||
5bf03f13 JB |
9508 | /* The compiler sometimes provides a parallel XVS type for a given |
9509 | PAD type. Normally, it is safe to follow the PAD type directly, | |
9510 | but older versions of the compiler have a bug that causes the offset | |
9511 | of its "F" field to be wrong. Following that field in that case | |
9512 | would lead to incorrect results, but this can be worked around | |
9513 | by ignoring the PAD type and using the associated XVS type instead. | |
9514 | ||
9515 | Set to True if the debugger should trust the contents of PAD types. | |
9516 | Otherwise, ignore the PAD type if there is a parallel XVS type. */ | |
9517 | static int trust_pad_over_xvs = 1; | |
14f9c5c9 AS |
9518 | |
9519 | /* True if TYPE is a struct type introduced by the compiler to force the | |
9520 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 9521 | distinctive name. */ |
14f9c5c9 AS |
9522 | |
9523 | int | |
ebf56fd3 | 9524 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 9525 | { |
61ee279c | 9526 | type = ada_check_typedef (type); |
714e53ab | 9527 | |
5bf03f13 | 9528 | if (!trust_pad_over_xvs && ada_find_parallel_type (type, "___XVS") != NULL) |
714e53ab PH |
9529 | return 0; |
9530 | ||
14f9c5c9 | 9531 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
9532 | && TYPE_NFIELDS (type) == 1 |
9533 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
9534 | } |
9535 | ||
9536 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 9537 | the parallel type. */ |
14f9c5c9 | 9538 | |
d2e4a39e AS |
9539 | struct type * |
9540 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 9541 | { |
d2e4a39e AS |
9542 | struct type *real_type_namer; |
9543 | struct type *raw_real_type; | |
14f9c5c9 AS |
9544 | |
9545 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
9546 | return raw_type; | |
9547 | ||
284614f0 JB |
9548 | if (ada_is_aligner_type (raw_type)) |
9549 | /* The encoding specifies that we should always use the aligner type. | |
9550 | So, even if this aligner type has an associated XVS type, we should | |
9551 | simply ignore it. | |
9552 | ||
9553 | According to the compiler gurus, an XVS type parallel to an aligner | |
9554 | type may exist because of a stabs limitation. In stabs, aligner | |
9555 | types are empty because the field has a variable-sized type, and | |
9556 | thus cannot actually be used as an aligner type. As a result, | |
9557 | we need the associated parallel XVS type to decode the type. | |
9558 | Since the policy in the compiler is to not change the internal | |
9559 | representation based on the debugging info format, we sometimes | |
9560 | end up having a redundant XVS type parallel to the aligner type. */ | |
9561 | return raw_type; | |
9562 | ||
14f9c5c9 | 9563 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 9564 | if (real_type_namer == NULL |
14f9c5c9 AS |
9565 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
9566 | || TYPE_NFIELDS (real_type_namer) != 1) | |
9567 | return raw_type; | |
9568 | ||
f80d3ff2 JB |
9569 | if (TYPE_CODE (TYPE_FIELD_TYPE (real_type_namer, 0)) != TYPE_CODE_REF) |
9570 | { | |
9571 | /* This is an older encoding form where the base type needs to be | |
9572 | looked up by name. We prefer the newer enconding because it is | |
9573 | more efficient. */ | |
9574 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
9575 | if (raw_real_type == NULL) | |
9576 | return raw_type; | |
9577 | else | |
9578 | return raw_real_type; | |
9579 | } | |
9580 | ||
9581 | /* The field in our XVS type is a reference to the base type. */ | |
9582 | return TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (real_type_namer, 0)); | |
d2e4a39e | 9583 | } |
14f9c5c9 | 9584 | |
4c4b4cd2 | 9585 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 9586 | |
d2e4a39e AS |
9587 | struct type * |
9588 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
9589 | { |
9590 | if (ada_is_aligner_type (type)) | |
9591 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
9592 | else | |
9593 | return ada_get_base_type (type); | |
9594 | } | |
9595 | ||
9596 | ||
9597 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 9598 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 9599 | |
fc1a4b47 AC |
9600 | const gdb_byte * |
9601 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 9602 | { |
d2e4a39e | 9603 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 9604 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
9605 | valaddr + |
9606 | TYPE_FIELD_BITPOS (type, | |
9607 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
9608 | else |
9609 | return valaddr; | |
9610 | } | |
9611 | ||
4c4b4cd2 PH |
9612 | |
9613 | ||
14f9c5c9 | 9614 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 9615 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
9616 | const char * |
9617 | ada_enum_name (const char *name) | |
14f9c5c9 | 9618 | { |
4c4b4cd2 PH |
9619 | static char *result; |
9620 | static size_t result_len = 0; | |
e6a959d6 | 9621 | const char *tmp; |
14f9c5c9 | 9622 | |
4c4b4cd2 PH |
9623 | /* First, unqualify the enumeration name: |
9624 | 1. Search for the last '.' character. If we find one, then skip | |
177b42fe | 9625 | all the preceding characters, the unqualified name starts |
76a01679 | 9626 | right after that dot. |
4c4b4cd2 | 9627 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
9628 | translates dots into "__". Search forward for double underscores, |
9629 | but stop searching when we hit an overloading suffix, which is | |
9630 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 9631 | |
c3e5cd34 PH |
9632 | tmp = strrchr (name, '.'); |
9633 | if (tmp != NULL) | |
4c4b4cd2 PH |
9634 | name = tmp + 1; |
9635 | else | |
14f9c5c9 | 9636 | { |
4c4b4cd2 PH |
9637 | while ((tmp = strstr (name, "__")) != NULL) |
9638 | { | |
9639 | if (isdigit (tmp[2])) | |
9640 | break; | |
9641 | else | |
9642 | name = tmp + 2; | |
9643 | } | |
14f9c5c9 AS |
9644 | } |
9645 | ||
9646 | if (name[0] == 'Q') | |
9647 | { | |
14f9c5c9 | 9648 | int v; |
5b4ee69b | 9649 | |
14f9c5c9 | 9650 | if (name[1] == 'U' || name[1] == 'W') |
4c4b4cd2 PH |
9651 | { |
9652 | if (sscanf (name + 2, "%x", &v) != 1) | |
9653 | return name; | |
9654 | } | |
14f9c5c9 | 9655 | else |
4c4b4cd2 | 9656 | return name; |
14f9c5c9 | 9657 | |
4c4b4cd2 | 9658 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 9659 | if (isascii (v) && isprint (v)) |
88c15c34 | 9660 | xsnprintf (result, result_len, "'%c'", v); |
14f9c5c9 | 9661 | else if (name[1] == 'U') |
88c15c34 | 9662 | xsnprintf (result, result_len, "[\"%02x\"]", v); |
14f9c5c9 | 9663 | else |
88c15c34 | 9664 | xsnprintf (result, result_len, "[\"%04x\"]", v); |
14f9c5c9 AS |
9665 | |
9666 | return result; | |
9667 | } | |
d2e4a39e | 9668 | else |
4c4b4cd2 | 9669 | { |
c3e5cd34 PH |
9670 | tmp = strstr (name, "__"); |
9671 | if (tmp == NULL) | |
9672 | tmp = strstr (name, "$"); | |
9673 | if (tmp != NULL) | |
4c4b4cd2 PH |
9674 | { |
9675 | GROW_VECT (result, result_len, tmp - name + 1); | |
9676 | strncpy (result, name, tmp - name); | |
9677 | result[tmp - name] = '\0'; | |
9678 | return result; | |
9679 | } | |
9680 | ||
9681 | return name; | |
9682 | } | |
14f9c5c9 AS |
9683 | } |
9684 | ||
14f9c5c9 AS |
9685 | /* Evaluate the subexpression of EXP starting at *POS as for |
9686 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 9687 | expression. */ |
14f9c5c9 | 9688 | |
d2e4a39e AS |
9689 | static struct value * |
9690 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 9691 | { |
4b27a620 | 9692 | return evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
14f9c5c9 AS |
9693 | } |
9694 | ||
9695 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 9696 | value it wraps. */ |
14f9c5c9 | 9697 | |
d2e4a39e AS |
9698 | static struct value * |
9699 | unwrap_value (struct value *val) | |
14f9c5c9 | 9700 | { |
df407dfe | 9701 | struct type *type = ada_check_typedef (value_type (val)); |
5b4ee69b | 9702 | |
14f9c5c9 AS |
9703 | if (ada_is_aligner_type (type)) |
9704 | { | |
de4d072f | 9705 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 9706 | struct type *val_type = ada_check_typedef (value_type (v)); |
5b4ee69b | 9707 | |
14f9c5c9 | 9708 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 9709 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
9710 | |
9711 | return unwrap_value (v); | |
9712 | } | |
d2e4a39e | 9713 | else |
14f9c5c9 | 9714 | { |
d2e4a39e | 9715 | struct type *raw_real_type = |
61ee279c | 9716 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 9717 | |
5bf03f13 JB |
9718 | /* If there is no parallel XVS or XVE type, then the value is |
9719 | already unwrapped. Return it without further modification. */ | |
9720 | if ((type == raw_real_type) | |
9721 | && ada_find_parallel_type (type, "___XVE") == NULL) | |
9722 | return val; | |
14f9c5c9 | 9723 | |
d2e4a39e | 9724 | return |
4c4b4cd2 PH |
9725 | coerce_unspec_val_to_type |
9726 | (val, ada_to_fixed_type (raw_real_type, 0, | |
42ae5230 | 9727 | value_address (val), |
1ed6ede0 | 9728 | NULL, 1)); |
14f9c5c9 AS |
9729 | } |
9730 | } | |
d2e4a39e AS |
9731 | |
9732 | static struct value * | |
50eff16b | 9733 | cast_from_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 9734 | { |
50eff16b UW |
9735 | struct value *scale = ada_scaling_factor (value_type (arg)); |
9736 | arg = value_cast (value_type (scale), arg); | |
14f9c5c9 | 9737 | |
50eff16b UW |
9738 | arg = value_binop (arg, scale, BINOP_MUL); |
9739 | return value_cast (type, arg); | |
14f9c5c9 AS |
9740 | } |
9741 | ||
d2e4a39e | 9742 | static struct value * |
50eff16b | 9743 | cast_to_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 9744 | { |
50eff16b UW |
9745 | if (type == value_type (arg)) |
9746 | return arg; | |
5b4ee69b | 9747 | |
50eff16b UW |
9748 | struct value *scale = ada_scaling_factor (type); |
9749 | if (ada_is_fixed_point_type (value_type (arg))) | |
9750 | arg = cast_from_fixed (value_type (scale), arg); | |
9751 | else | |
9752 | arg = value_cast (value_type (scale), arg); | |
9753 | ||
9754 | arg = value_binop (arg, scale, BINOP_DIV); | |
9755 | return value_cast (type, arg); | |
14f9c5c9 AS |
9756 | } |
9757 | ||
d99dcf51 JB |
9758 | /* Given two array types T1 and T2, return nonzero iff both arrays |
9759 | contain the same number of elements. */ | |
9760 | ||
9761 | static int | |
9762 | ada_same_array_size_p (struct type *t1, struct type *t2) | |
9763 | { | |
9764 | LONGEST lo1, hi1, lo2, hi2; | |
9765 | ||
9766 | /* Get the array bounds in order to verify that the size of | |
9767 | the two arrays match. */ | |
9768 | if (!get_array_bounds (t1, &lo1, &hi1) | |
9769 | || !get_array_bounds (t2, &lo2, &hi2)) | |
9770 | error (_("unable to determine array bounds")); | |
9771 | ||
9772 | /* To make things easier for size comparison, normalize a bit | |
9773 | the case of empty arrays by making sure that the difference | |
9774 | between upper bound and lower bound is always -1. */ | |
9775 | if (lo1 > hi1) | |
9776 | hi1 = lo1 - 1; | |
9777 | if (lo2 > hi2) | |
9778 | hi2 = lo2 - 1; | |
9779 | ||
9780 | return (hi1 - lo1 == hi2 - lo2); | |
9781 | } | |
9782 | ||
9783 | /* Assuming that VAL is an array of integrals, and TYPE represents | |
9784 | an array with the same number of elements, but with wider integral | |
9785 | elements, return an array "casted" to TYPE. In practice, this | |
9786 | means that the returned array is built by casting each element | |
9787 | of the original array into TYPE's (wider) element type. */ | |
9788 | ||
9789 | static struct value * | |
9790 | ada_promote_array_of_integrals (struct type *type, struct value *val) | |
9791 | { | |
9792 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
9793 | LONGEST lo, hi; | |
9794 | struct value *res; | |
9795 | LONGEST i; | |
9796 | ||
9797 | /* Verify that both val and type are arrays of scalars, and | |
9798 | that the size of val's elements is smaller than the size | |
9799 | of type's element. */ | |
9800 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); | |
9801 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (type))); | |
9802 | gdb_assert (TYPE_CODE (value_type (val)) == TYPE_CODE_ARRAY); | |
9803 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (value_type (val)))); | |
9804 | gdb_assert (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) | |
9805 | > TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (val)))); | |
9806 | ||
9807 | if (!get_array_bounds (type, &lo, &hi)) | |
9808 | error (_("unable to determine array bounds")); | |
9809 | ||
9810 | res = allocate_value (type); | |
9811 | ||
9812 | /* Promote each array element. */ | |
9813 | for (i = 0; i < hi - lo + 1; i++) | |
9814 | { | |
9815 | struct value *elt = value_cast (elt_type, value_subscript (val, lo + i)); | |
9816 | ||
9817 | memcpy (value_contents_writeable (res) + (i * TYPE_LENGTH (elt_type)), | |
9818 | value_contents_all (elt), TYPE_LENGTH (elt_type)); | |
9819 | } | |
9820 | ||
9821 | return res; | |
9822 | } | |
9823 | ||
4c4b4cd2 PH |
9824 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
9825 | return the converted value. */ | |
9826 | ||
d2e4a39e AS |
9827 | static struct value * |
9828 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 9829 | { |
df407dfe | 9830 | struct type *type2 = value_type (val); |
5b4ee69b | 9831 | |
14f9c5c9 AS |
9832 | if (type == type2) |
9833 | return val; | |
9834 | ||
61ee279c PH |
9835 | type2 = ada_check_typedef (type2); |
9836 | type = ada_check_typedef (type); | |
14f9c5c9 | 9837 | |
d2e4a39e AS |
9838 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
9839 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
9840 | { |
9841 | val = ada_value_ind (val); | |
df407dfe | 9842 | type2 = value_type (val); |
14f9c5c9 AS |
9843 | } |
9844 | ||
d2e4a39e | 9845 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
9846 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
9847 | { | |
d99dcf51 JB |
9848 | if (!ada_same_array_size_p (type, type2)) |
9849 | error (_("cannot assign arrays of different length")); | |
9850 | ||
9851 | if (is_integral_type (TYPE_TARGET_TYPE (type)) | |
9852 | && is_integral_type (TYPE_TARGET_TYPE (type2)) | |
9853 | && TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
9854 | < TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
9855 | { | |
9856 | /* Allow implicit promotion of the array elements to | |
9857 | a wider type. */ | |
9858 | return ada_promote_array_of_integrals (type, val); | |
9859 | } | |
9860 | ||
9861 | if (TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
9862 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
323e0a4a | 9863 | error (_("Incompatible types in assignment")); |
04624583 | 9864 | deprecated_set_value_type (val, type); |
14f9c5c9 | 9865 | } |
d2e4a39e | 9866 | return val; |
14f9c5c9 AS |
9867 | } |
9868 | ||
4c4b4cd2 PH |
9869 | static struct value * |
9870 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
9871 | { | |
9872 | struct value *val; | |
9873 | struct type *type1, *type2; | |
9874 | LONGEST v, v1, v2; | |
9875 | ||
994b9211 AC |
9876 | arg1 = coerce_ref (arg1); |
9877 | arg2 = coerce_ref (arg2); | |
18af8284 JB |
9878 | type1 = get_base_type (ada_check_typedef (value_type (arg1))); |
9879 | type2 = get_base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 9880 | |
76a01679 JB |
9881 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
9882 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
9883 | return value_binop (arg1, arg2, op); |
9884 | ||
76a01679 | 9885 | switch (op) |
4c4b4cd2 PH |
9886 | { |
9887 | case BINOP_MOD: | |
9888 | case BINOP_DIV: | |
9889 | case BINOP_REM: | |
9890 | break; | |
9891 | default: | |
9892 | return value_binop (arg1, arg2, op); | |
9893 | } | |
9894 | ||
9895 | v2 = value_as_long (arg2); | |
9896 | if (v2 == 0) | |
323e0a4a | 9897 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
9898 | |
9899 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
9900 | return value_binop (arg1, arg2, op); | |
9901 | ||
9902 | v1 = value_as_long (arg1); | |
9903 | switch (op) | |
9904 | { | |
9905 | case BINOP_DIV: | |
9906 | v = v1 / v2; | |
76a01679 JB |
9907 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
9908 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
9909 | break; |
9910 | case BINOP_REM: | |
9911 | v = v1 % v2; | |
76a01679 JB |
9912 | if (v * v1 < 0) |
9913 | v -= v2; | |
4c4b4cd2 PH |
9914 | break; |
9915 | default: | |
9916 | /* Should not reach this point. */ | |
9917 | v = 0; | |
9918 | } | |
9919 | ||
9920 | val = allocate_value (type1); | |
990a07ab | 9921 | store_unsigned_integer (value_contents_raw (val), |
e17a4113 UW |
9922 | TYPE_LENGTH (value_type (val)), |
9923 | gdbarch_byte_order (get_type_arch (type1)), v); | |
4c4b4cd2 PH |
9924 | return val; |
9925 | } | |
9926 | ||
9927 | static int | |
9928 | ada_value_equal (struct value *arg1, struct value *arg2) | |
9929 | { | |
df407dfe AC |
9930 | if (ada_is_direct_array_type (value_type (arg1)) |
9931 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 9932 | { |
79e8fcaa JB |
9933 | struct type *arg1_type, *arg2_type; |
9934 | ||
f58b38bf JB |
9935 | /* Automatically dereference any array reference before |
9936 | we attempt to perform the comparison. */ | |
9937 | arg1 = ada_coerce_ref (arg1); | |
9938 | arg2 = ada_coerce_ref (arg2); | |
79e8fcaa | 9939 | |
4c4b4cd2 PH |
9940 | arg1 = ada_coerce_to_simple_array (arg1); |
9941 | arg2 = ada_coerce_to_simple_array (arg2); | |
79e8fcaa JB |
9942 | |
9943 | arg1_type = ada_check_typedef (value_type (arg1)); | |
9944 | arg2_type = ada_check_typedef (value_type (arg2)); | |
9945 | ||
9946 | if (TYPE_CODE (arg1_type) != TYPE_CODE_ARRAY | |
9947 | || TYPE_CODE (arg2_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 9948 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 9949 | /* FIXME: The following works only for types whose |
76a01679 JB |
9950 | representations use all bits (no padding or undefined bits) |
9951 | and do not have user-defined equality. */ | |
79e8fcaa JB |
9952 | return (TYPE_LENGTH (arg1_type) == TYPE_LENGTH (arg2_type) |
9953 | && memcmp (value_contents (arg1), value_contents (arg2), | |
9954 | TYPE_LENGTH (arg1_type)) == 0); | |
4c4b4cd2 PH |
9955 | } |
9956 | return value_equal (arg1, arg2); | |
9957 | } | |
9958 | ||
52ce6436 PH |
9959 | /* Total number of component associations in the aggregate starting at |
9960 | index PC in EXP. Assumes that index PC is the start of an | |
0963b4bd | 9961 | OP_AGGREGATE. */ |
52ce6436 PH |
9962 | |
9963 | static int | |
9964 | num_component_specs (struct expression *exp, int pc) | |
9965 | { | |
9966 | int n, m, i; | |
5b4ee69b | 9967 | |
52ce6436 PH |
9968 | m = exp->elts[pc + 1].longconst; |
9969 | pc += 3; | |
9970 | n = 0; | |
9971 | for (i = 0; i < m; i += 1) | |
9972 | { | |
9973 | switch (exp->elts[pc].opcode) | |
9974 | { | |
9975 | default: | |
9976 | n += 1; | |
9977 | break; | |
9978 | case OP_CHOICES: | |
9979 | n += exp->elts[pc + 1].longconst; | |
9980 | break; | |
9981 | } | |
9982 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
9983 | } | |
9984 | return n; | |
9985 | } | |
9986 | ||
9987 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
9988 | component of LHS (a simple array or a record), updating *POS past | |
9989 | the expression, assuming that LHS is contained in CONTAINER. Does | |
9990 | not modify the inferior's memory, nor does it modify LHS (unless | |
9991 | LHS == CONTAINER). */ | |
9992 | ||
9993 | static void | |
9994 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
9995 | struct expression *exp, int *pos) | |
9996 | { | |
9997 | struct value *mark = value_mark (); | |
9998 | struct value *elt; | |
0e2da9f0 | 9999 | struct type *lhs_type = check_typedef (value_type (lhs)); |
5b4ee69b | 10000 | |
0e2da9f0 | 10001 | if (TYPE_CODE (lhs_type) == TYPE_CODE_ARRAY) |
52ce6436 | 10002 | { |
22601c15 UW |
10003 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
10004 | struct value *index_val = value_from_longest (index_type, index); | |
5b4ee69b | 10005 | |
52ce6436 PH |
10006 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
10007 | } | |
10008 | else | |
10009 | { | |
10010 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
c48db5ca | 10011 | elt = ada_to_fixed_value (elt); |
52ce6436 PH |
10012 | } |
10013 | ||
10014 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
10015 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
10016 | else | |
10017 | value_assign_to_component (container, elt, | |
10018 | ada_evaluate_subexp (NULL, exp, pos, | |
10019 | EVAL_NORMAL)); | |
10020 | ||
10021 | value_free_to_mark (mark); | |
10022 | } | |
10023 | ||
10024 | /* Assuming that LHS represents an lvalue having a record or array | |
10025 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
10026 | of that aggregate's value to LHS, advancing *POS past the | |
10027 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
10028 | lvalue containing LHS (possibly LHS itself). Does not modify | |
10029 | the inferior's memory, nor does it modify the contents of | |
0963b4bd | 10030 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ |
52ce6436 PH |
10031 | |
10032 | static struct value * | |
10033 | assign_aggregate (struct value *container, | |
10034 | struct value *lhs, struct expression *exp, | |
10035 | int *pos, enum noside noside) | |
10036 | { | |
10037 | struct type *lhs_type; | |
10038 | int n = exp->elts[*pos+1].longconst; | |
10039 | LONGEST low_index, high_index; | |
10040 | int num_specs; | |
10041 | LONGEST *indices; | |
10042 | int max_indices, num_indices; | |
52ce6436 | 10043 | int i; |
52ce6436 PH |
10044 | |
10045 | *pos += 3; | |
10046 | if (noside != EVAL_NORMAL) | |
10047 | { | |
52ce6436 PH |
10048 | for (i = 0; i < n; i += 1) |
10049 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
10050 | return container; | |
10051 | } | |
10052 | ||
10053 | container = ada_coerce_ref (container); | |
10054 | if (ada_is_direct_array_type (value_type (container))) | |
10055 | container = ada_coerce_to_simple_array (container); | |
10056 | lhs = ada_coerce_ref (lhs); | |
10057 | if (!deprecated_value_modifiable (lhs)) | |
10058 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
10059 | ||
0e2da9f0 | 10060 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
10061 | if (ada_is_direct_array_type (lhs_type)) |
10062 | { | |
10063 | lhs = ada_coerce_to_simple_array (lhs); | |
0e2da9f0 | 10064 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
10065 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); |
10066 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
52ce6436 PH |
10067 | } |
10068 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
10069 | { | |
10070 | low_index = 0; | |
10071 | high_index = num_visible_fields (lhs_type) - 1; | |
52ce6436 PH |
10072 | } |
10073 | else | |
10074 | error (_("Left-hand side must be array or record.")); | |
10075 | ||
10076 | num_specs = num_component_specs (exp, *pos - 3); | |
10077 | max_indices = 4 * num_specs + 4; | |
8d749320 | 10078 | indices = XALLOCAVEC (LONGEST, max_indices); |
52ce6436 PH |
10079 | indices[0] = indices[1] = low_index - 1; |
10080 | indices[2] = indices[3] = high_index + 1; | |
10081 | num_indices = 4; | |
10082 | ||
10083 | for (i = 0; i < n; i += 1) | |
10084 | { | |
10085 | switch (exp->elts[*pos].opcode) | |
10086 | { | |
1fbf5ada JB |
10087 | case OP_CHOICES: |
10088 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
10089 | &num_indices, max_indices, | |
10090 | low_index, high_index); | |
10091 | break; | |
10092 | case OP_POSITIONAL: | |
10093 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
52ce6436 PH |
10094 | &num_indices, max_indices, |
10095 | low_index, high_index); | |
1fbf5ada JB |
10096 | break; |
10097 | case OP_OTHERS: | |
10098 | if (i != n-1) | |
10099 | error (_("Misplaced 'others' clause")); | |
10100 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
10101 | num_indices, low_index, high_index); | |
10102 | break; | |
10103 | default: | |
10104 | error (_("Internal error: bad aggregate clause")); | |
52ce6436 PH |
10105 | } |
10106 | } | |
10107 | ||
10108 | return container; | |
10109 | } | |
10110 | ||
10111 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
10112 | construct at *POS, updating *POS past the construct, given that | |
10113 | the positions are relative to lower bound LOW, where HIGH is the | |
10114 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
10115 | updating *NUM_INDICES as needed. CONTAINER is as for | |
0963b4bd | 10116 | assign_aggregate. */ |
52ce6436 PH |
10117 | static void |
10118 | aggregate_assign_positional (struct value *container, | |
10119 | struct value *lhs, struct expression *exp, | |
10120 | int *pos, LONGEST *indices, int *num_indices, | |
10121 | int max_indices, LONGEST low, LONGEST high) | |
10122 | { | |
10123 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
10124 | ||
10125 | if (ind - 1 == high) | |
e1d5a0d2 | 10126 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
10127 | if (ind <= high) |
10128 | { | |
10129 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
10130 | *pos += 3; | |
10131 | assign_component (container, lhs, ind, exp, pos); | |
10132 | } | |
10133 | else | |
10134 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10135 | } | |
10136 | ||
10137 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
10138 | construct at *POS, updating *POS past the construct, given that | |
10139 | the allowable indices are LOW..HIGH. Record the indices assigned | |
10140 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
0963b4bd | 10141 | needed. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
10142 | static void |
10143 | aggregate_assign_from_choices (struct value *container, | |
10144 | struct value *lhs, struct expression *exp, | |
10145 | int *pos, LONGEST *indices, int *num_indices, | |
10146 | int max_indices, LONGEST low, LONGEST high) | |
10147 | { | |
10148 | int j; | |
10149 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
10150 | int choice_pos, expr_pc; | |
10151 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
10152 | ||
10153 | choice_pos = *pos += 3; | |
10154 | ||
10155 | for (j = 0; j < n_choices; j += 1) | |
10156 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10157 | expr_pc = *pos; | |
10158 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10159 | ||
10160 | for (j = 0; j < n_choices; j += 1) | |
10161 | { | |
10162 | LONGEST lower, upper; | |
10163 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
5b4ee69b | 10164 | |
52ce6436 PH |
10165 | if (op == OP_DISCRETE_RANGE) |
10166 | { | |
10167 | choice_pos += 1; | |
10168 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
10169 | EVAL_NORMAL)); | |
10170 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
10171 | EVAL_NORMAL)); | |
10172 | } | |
10173 | else if (is_array) | |
10174 | { | |
10175 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
10176 | EVAL_NORMAL)); | |
10177 | upper = lower; | |
10178 | } | |
10179 | else | |
10180 | { | |
10181 | int ind; | |
0d5cff50 | 10182 | const char *name; |
5b4ee69b | 10183 | |
52ce6436 PH |
10184 | switch (op) |
10185 | { | |
10186 | case OP_NAME: | |
10187 | name = &exp->elts[choice_pos + 2].string; | |
10188 | break; | |
10189 | case OP_VAR_VALUE: | |
10190 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
10191 | break; | |
10192 | default: | |
10193 | error (_("Invalid record component association.")); | |
10194 | } | |
10195 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
10196 | ind = 0; | |
10197 | if (! find_struct_field (name, value_type (lhs), 0, | |
10198 | NULL, NULL, NULL, NULL, &ind)) | |
10199 | error (_("Unknown component name: %s."), name); | |
10200 | lower = upper = ind; | |
10201 | } | |
10202 | ||
10203 | if (lower <= upper && (lower < low || upper > high)) | |
10204 | error (_("Index in component association out of bounds.")); | |
10205 | ||
10206 | add_component_interval (lower, upper, indices, num_indices, | |
10207 | max_indices); | |
10208 | while (lower <= upper) | |
10209 | { | |
10210 | int pos1; | |
5b4ee69b | 10211 | |
52ce6436 PH |
10212 | pos1 = expr_pc; |
10213 | assign_component (container, lhs, lower, exp, &pos1); | |
10214 | lower += 1; | |
10215 | } | |
10216 | } | |
10217 | } | |
10218 | ||
10219 | /* Assign the value of the expression in the OP_OTHERS construct in | |
10220 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
10221 | have not been previously assigned. The index intervals already assigned | |
10222 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
0963b4bd | 10223 | OP_OTHERS clause. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
10224 | static void |
10225 | aggregate_assign_others (struct value *container, | |
10226 | struct value *lhs, struct expression *exp, | |
10227 | int *pos, LONGEST *indices, int num_indices, | |
10228 | LONGEST low, LONGEST high) | |
10229 | { | |
10230 | int i; | |
5ce64950 | 10231 | int expr_pc = *pos + 1; |
52ce6436 PH |
10232 | |
10233 | for (i = 0; i < num_indices - 2; i += 2) | |
10234 | { | |
10235 | LONGEST ind; | |
5b4ee69b | 10236 | |
52ce6436 PH |
10237 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) |
10238 | { | |
5ce64950 | 10239 | int localpos; |
5b4ee69b | 10240 | |
5ce64950 MS |
10241 | localpos = expr_pc; |
10242 | assign_component (container, lhs, ind, exp, &localpos); | |
52ce6436 PH |
10243 | } |
10244 | } | |
10245 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
10246 | } | |
10247 | ||
10248 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
10249 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
10250 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
10251 | MAX_SIZE. The resulting intervals do not overlap. */ | |
10252 | static void | |
10253 | add_component_interval (LONGEST low, LONGEST high, | |
10254 | LONGEST* indices, int *size, int max_size) | |
10255 | { | |
10256 | int i, j; | |
5b4ee69b | 10257 | |
52ce6436 PH |
10258 | for (i = 0; i < *size; i += 2) { |
10259 | if (high >= indices[i] && low <= indices[i + 1]) | |
10260 | { | |
10261 | int kh; | |
5b4ee69b | 10262 | |
52ce6436 PH |
10263 | for (kh = i + 2; kh < *size; kh += 2) |
10264 | if (high < indices[kh]) | |
10265 | break; | |
10266 | if (low < indices[i]) | |
10267 | indices[i] = low; | |
10268 | indices[i + 1] = indices[kh - 1]; | |
10269 | if (high > indices[i + 1]) | |
10270 | indices[i + 1] = high; | |
10271 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
10272 | *size -= kh - i - 2; | |
10273 | return; | |
10274 | } | |
10275 | else if (high < indices[i]) | |
10276 | break; | |
10277 | } | |
10278 | ||
10279 | if (*size == max_size) | |
10280 | error (_("Internal error: miscounted aggregate components.")); | |
10281 | *size += 2; | |
10282 | for (j = *size-1; j >= i+2; j -= 1) | |
10283 | indices[j] = indices[j - 2]; | |
10284 | indices[i] = low; | |
10285 | indices[i + 1] = high; | |
10286 | } | |
10287 | ||
6e48bd2c JB |
10288 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
10289 | is different. */ | |
10290 | ||
10291 | static struct value * | |
b7e22850 | 10292 | ada_value_cast (struct type *type, struct value *arg2) |
6e48bd2c JB |
10293 | { |
10294 | if (type == ada_check_typedef (value_type (arg2))) | |
10295 | return arg2; | |
10296 | ||
10297 | if (ada_is_fixed_point_type (type)) | |
10298 | return (cast_to_fixed (type, arg2)); | |
10299 | ||
10300 | if (ada_is_fixed_point_type (value_type (arg2))) | |
a53b7a21 | 10301 | return cast_from_fixed (type, arg2); |
6e48bd2c JB |
10302 | |
10303 | return value_cast (type, arg2); | |
10304 | } | |
10305 | ||
284614f0 JB |
10306 | /* Evaluating Ada expressions, and printing their result. |
10307 | ------------------------------------------------------ | |
10308 | ||
21649b50 JB |
10309 | 1. Introduction: |
10310 | ---------------- | |
10311 | ||
284614f0 JB |
10312 | We usually evaluate an Ada expression in order to print its value. |
10313 | We also evaluate an expression in order to print its type, which | |
10314 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
10315 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
10316 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
10317 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
10318 | similar. | |
10319 | ||
10320 | Evaluating expressions is a little more complicated for Ada entities | |
10321 | than it is for entities in languages such as C. The main reason for | |
10322 | this is that Ada provides types whose definition might be dynamic. | |
10323 | One example of such types is variant records. Or another example | |
10324 | would be an array whose bounds can only be known at run time. | |
10325 | ||
10326 | The following description is a general guide as to what should be | |
10327 | done (and what should NOT be done) in order to evaluate an expression | |
10328 | involving such types, and when. This does not cover how the semantic | |
10329 | information is encoded by GNAT as this is covered separatly. For the | |
10330 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
10331 | in the GNAT sources. | |
10332 | ||
10333 | Ideally, we should embed each part of this description next to its | |
10334 | associated code. Unfortunately, the amount of code is so vast right | |
10335 | now that it's hard to see whether the code handling a particular | |
10336 | situation might be duplicated or not. One day, when the code is | |
10337 | cleaned up, this guide might become redundant with the comments | |
10338 | inserted in the code, and we might want to remove it. | |
10339 | ||
21649b50 JB |
10340 | 2. ``Fixing'' an Entity, the Simple Case: |
10341 | ----------------------------------------- | |
10342 | ||
284614f0 JB |
10343 | When evaluating Ada expressions, the tricky issue is that they may |
10344 | reference entities whose type contents and size are not statically | |
10345 | known. Consider for instance a variant record: | |
10346 | ||
10347 | type Rec (Empty : Boolean := True) is record | |
10348 | case Empty is | |
10349 | when True => null; | |
10350 | when False => Value : Integer; | |
10351 | end case; | |
10352 | end record; | |
10353 | Yes : Rec := (Empty => False, Value => 1); | |
10354 | No : Rec := (empty => True); | |
10355 | ||
10356 | The size and contents of that record depends on the value of the | |
10357 | descriminant (Rec.Empty). At this point, neither the debugging | |
10358 | information nor the associated type structure in GDB are able to | |
10359 | express such dynamic types. So what the debugger does is to create | |
10360 | "fixed" versions of the type that applies to the specific object. | |
10361 | We also informally refer to this opperation as "fixing" an object, | |
10362 | which means creating its associated fixed type. | |
10363 | ||
10364 | Example: when printing the value of variable "Yes" above, its fixed | |
10365 | type would look like this: | |
10366 | ||
10367 | type Rec is record | |
10368 | Empty : Boolean; | |
10369 | Value : Integer; | |
10370 | end record; | |
10371 | ||
10372 | On the other hand, if we printed the value of "No", its fixed type | |
10373 | would become: | |
10374 | ||
10375 | type Rec is record | |
10376 | Empty : Boolean; | |
10377 | end record; | |
10378 | ||
10379 | Things become a little more complicated when trying to fix an entity | |
10380 | with a dynamic type that directly contains another dynamic type, | |
10381 | such as an array of variant records, for instance. There are | |
10382 | two possible cases: Arrays, and records. | |
10383 | ||
21649b50 JB |
10384 | 3. ``Fixing'' Arrays: |
10385 | --------------------- | |
10386 | ||
10387 | The type structure in GDB describes an array in terms of its bounds, | |
10388 | and the type of its elements. By design, all elements in the array | |
10389 | have the same type and we cannot represent an array of variant elements | |
10390 | using the current type structure in GDB. When fixing an array, | |
10391 | we cannot fix the array element, as we would potentially need one | |
10392 | fixed type per element of the array. As a result, the best we can do | |
10393 | when fixing an array is to produce an array whose bounds and size | |
10394 | are correct (allowing us to read it from memory), but without having | |
10395 | touched its element type. Fixing each element will be done later, | |
10396 | when (if) necessary. | |
10397 | ||
10398 | Arrays are a little simpler to handle than records, because the same | |
10399 | amount of memory is allocated for each element of the array, even if | |
1b536f04 | 10400 | the amount of space actually used by each element differs from element |
21649b50 | 10401 | to element. Consider for instance the following array of type Rec: |
284614f0 JB |
10402 | |
10403 | type Rec_Array is array (1 .. 2) of Rec; | |
10404 | ||
1b536f04 JB |
10405 | The actual amount of memory occupied by each element might be different |
10406 | from element to element, depending on the value of their discriminant. | |
21649b50 | 10407 | But the amount of space reserved for each element in the array remains |
1b536f04 | 10408 | fixed regardless. So we simply need to compute that size using |
21649b50 JB |
10409 | the debugging information available, from which we can then determine |
10410 | the array size (we multiply the number of elements of the array by | |
10411 | the size of each element). | |
10412 | ||
10413 | The simplest case is when we have an array of a constrained element | |
10414 | type. For instance, consider the following type declarations: | |
10415 | ||
10416 | type Bounded_String (Max_Size : Integer) is | |
10417 | Length : Integer; | |
10418 | Buffer : String (1 .. Max_Size); | |
10419 | end record; | |
10420 | type Bounded_String_Array is array (1 ..2) of Bounded_String (80); | |
10421 | ||
10422 | In this case, the compiler describes the array as an array of | |
10423 | variable-size elements (identified by its XVS suffix) for which | |
10424 | the size can be read in the parallel XVZ variable. | |
10425 | ||
10426 | In the case of an array of an unconstrained element type, the compiler | |
10427 | wraps the array element inside a private PAD type. This type should not | |
10428 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
284614f0 JB |
10429 | that we also use the adjective "aligner" in our code to designate |
10430 | these wrapper types. | |
10431 | ||
1b536f04 | 10432 | In some cases, the size allocated for each element is statically |
21649b50 JB |
10433 | known. In that case, the PAD type already has the correct size, |
10434 | and the array element should remain unfixed. | |
10435 | ||
10436 | But there are cases when this size is not statically known. | |
10437 | For instance, assuming that "Five" is an integer variable: | |
284614f0 JB |
10438 | |
10439 | type Dynamic is array (1 .. Five) of Integer; | |
10440 | type Wrapper (Has_Length : Boolean := False) is record | |
10441 | Data : Dynamic; | |
10442 | case Has_Length is | |
10443 | when True => Length : Integer; | |
10444 | when False => null; | |
10445 | end case; | |
10446 | end record; | |
10447 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
10448 | ||
10449 | Hello : Wrapper_Array := (others => (Has_Length => True, | |
10450 | Data => (others => 17), | |
10451 | Length => 1)); | |
10452 | ||
10453 | ||
10454 | The debugging info would describe variable Hello as being an | |
10455 | array of a PAD type. The size of that PAD type is not statically | |
10456 | known, but can be determined using a parallel XVZ variable. | |
10457 | In that case, a copy of the PAD type with the correct size should | |
10458 | be used for the fixed array. | |
10459 | ||
21649b50 JB |
10460 | 3. ``Fixing'' record type objects: |
10461 | ---------------------------------- | |
10462 | ||
10463 | Things are slightly different from arrays in the case of dynamic | |
284614f0 JB |
10464 | record types. In this case, in order to compute the associated |
10465 | fixed type, we need to determine the size and offset of each of | |
10466 | its components. This, in turn, requires us to compute the fixed | |
10467 | type of each of these components. | |
10468 | ||
10469 | Consider for instance the example: | |
10470 | ||
10471 | type Bounded_String (Max_Size : Natural) is record | |
10472 | Str : String (1 .. Max_Size); | |
10473 | Length : Natural; | |
10474 | end record; | |
10475 | My_String : Bounded_String (Max_Size => 10); | |
10476 | ||
10477 | In that case, the position of field "Length" depends on the size | |
10478 | of field Str, which itself depends on the value of the Max_Size | |
21649b50 | 10479 | discriminant. In order to fix the type of variable My_String, |
284614f0 JB |
10480 | we need to fix the type of field Str. Therefore, fixing a variant |
10481 | record requires us to fix each of its components. | |
10482 | ||
10483 | However, if a component does not have a dynamic size, the component | |
10484 | should not be fixed. In particular, fields that use a PAD type | |
10485 | should not fixed. Here is an example where this might happen | |
10486 | (assuming type Rec above): | |
10487 | ||
10488 | type Container (Big : Boolean) is record | |
10489 | First : Rec; | |
10490 | After : Integer; | |
10491 | case Big is | |
10492 | when True => Another : Integer; | |
10493 | when False => null; | |
10494 | end case; | |
10495 | end record; | |
10496 | My_Container : Container := (Big => False, | |
10497 | First => (Empty => True), | |
10498 | After => 42); | |
10499 | ||
10500 | In that example, the compiler creates a PAD type for component First, | |
10501 | whose size is constant, and then positions the component After just | |
10502 | right after it. The offset of component After is therefore constant | |
10503 | in this case. | |
10504 | ||
10505 | The debugger computes the position of each field based on an algorithm | |
10506 | that uses, among other things, the actual position and size of the field | |
21649b50 JB |
10507 | preceding it. Let's now imagine that the user is trying to print |
10508 | the value of My_Container. If the type fixing was recursive, we would | |
284614f0 JB |
10509 | end up computing the offset of field After based on the size of the |
10510 | fixed version of field First. And since in our example First has | |
10511 | only one actual field, the size of the fixed type is actually smaller | |
10512 | than the amount of space allocated to that field, and thus we would | |
10513 | compute the wrong offset of field After. | |
10514 | ||
21649b50 JB |
10515 | To make things more complicated, we need to watch out for dynamic |
10516 | components of variant records (identified by the ___XVL suffix in | |
10517 | the component name). Even if the target type is a PAD type, the size | |
10518 | of that type might not be statically known. So the PAD type needs | |
10519 | to be unwrapped and the resulting type needs to be fixed. Otherwise, | |
10520 | we might end up with the wrong size for our component. This can be | |
10521 | observed with the following type declarations: | |
284614f0 JB |
10522 | |
10523 | type Octal is new Integer range 0 .. 7; | |
10524 | type Octal_Array is array (Positive range <>) of Octal; | |
10525 | pragma Pack (Octal_Array); | |
10526 | ||
10527 | type Octal_Buffer (Size : Positive) is record | |
10528 | Buffer : Octal_Array (1 .. Size); | |
10529 | Length : Integer; | |
10530 | end record; | |
10531 | ||
10532 | In that case, Buffer is a PAD type whose size is unset and needs | |
10533 | to be computed by fixing the unwrapped type. | |
10534 | ||
21649b50 JB |
10535 | 4. When to ``Fix'' un-``Fixed'' sub-elements of an entity: |
10536 | ---------------------------------------------------------- | |
10537 | ||
10538 | Lastly, when should the sub-elements of an entity that remained unfixed | |
284614f0 JB |
10539 | thus far, be actually fixed? |
10540 | ||
10541 | The answer is: Only when referencing that element. For instance | |
10542 | when selecting one component of a record, this specific component | |
10543 | should be fixed at that point in time. Or when printing the value | |
10544 | of a record, each component should be fixed before its value gets | |
10545 | printed. Similarly for arrays, the element of the array should be | |
10546 | fixed when printing each element of the array, or when extracting | |
10547 | one element out of that array. On the other hand, fixing should | |
10548 | not be performed on the elements when taking a slice of an array! | |
10549 | ||
31432a67 | 10550 | Note that one of the side effects of miscomputing the offset and |
284614f0 JB |
10551 | size of each field is that we end up also miscomputing the size |
10552 | of the containing type. This can have adverse results when computing | |
10553 | the value of an entity. GDB fetches the value of an entity based | |
10554 | on the size of its type, and thus a wrong size causes GDB to fetch | |
10555 | the wrong amount of memory. In the case where the computed size is | |
10556 | too small, GDB fetches too little data to print the value of our | |
31432a67 | 10557 | entity. Results in this case are unpredictable, as we usually read |
284614f0 JB |
10558 | past the buffer containing the data =:-o. */ |
10559 | ||
ced9779b JB |
10560 | /* Evaluate a subexpression of EXP, at index *POS, and return a value |
10561 | for that subexpression cast to TO_TYPE. Advance *POS over the | |
10562 | subexpression. */ | |
10563 | ||
10564 | static value * | |
10565 | ada_evaluate_subexp_for_cast (expression *exp, int *pos, | |
10566 | enum noside noside, struct type *to_type) | |
10567 | { | |
10568 | int pc = *pos; | |
10569 | ||
10570 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE | |
10571 | || exp->elts[pc].opcode == OP_VAR_VALUE) | |
10572 | { | |
10573 | (*pos) += 4; | |
10574 | ||
10575 | value *val; | |
10576 | if (exp->elts[pc].opcode == OP_VAR_MSYM_VALUE) | |
10577 | { | |
10578 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10579 | return value_zero (to_type, not_lval); | |
10580 | ||
10581 | val = evaluate_var_msym_value (noside, | |
10582 | exp->elts[pc + 1].objfile, | |
10583 | exp->elts[pc + 2].msymbol); | |
10584 | } | |
10585 | else | |
10586 | val = evaluate_var_value (noside, | |
10587 | exp->elts[pc + 1].block, | |
10588 | exp->elts[pc + 2].symbol); | |
10589 | ||
10590 | if (noside == EVAL_SKIP) | |
10591 | return eval_skip_value (exp); | |
10592 | ||
10593 | val = ada_value_cast (to_type, val); | |
10594 | ||
10595 | /* Follow the Ada language semantics that do not allow taking | |
10596 | an address of the result of a cast (view conversion in Ada). */ | |
10597 | if (VALUE_LVAL (val) == lval_memory) | |
10598 | { | |
10599 | if (value_lazy (val)) | |
10600 | value_fetch_lazy (val); | |
10601 | VALUE_LVAL (val) = not_lval; | |
10602 | } | |
10603 | return val; | |
10604 | } | |
10605 | ||
10606 | value *val = evaluate_subexp (to_type, exp, pos, noside); | |
10607 | if (noside == EVAL_SKIP) | |
10608 | return eval_skip_value (exp); | |
10609 | return ada_value_cast (to_type, val); | |
10610 | } | |
10611 | ||
284614f0 JB |
10612 | /* Implement the evaluate_exp routine in the exp_descriptor structure |
10613 | for the Ada language. */ | |
10614 | ||
52ce6436 | 10615 | static struct value * |
ebf56fd3 | 10616 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 10617 | int *pos, enum noside noside) |
14f9c5c9 AS |
10618 | { |
10619 | enum exp_opcode op; | |
b5385fc0 | 10620 | int tem; |
14f9c5c9 | 10621 | int pc; |
5ec18f2b | 10622 | int preeval_pos; |
14f9c5c9 AS |
10623 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; |
10624 | struct type *type; | |
52ce6436 | 10625 | int nargs, oplen; |
d2e4a39e | 10626 | struct value **argvec; |
14f9c5c9 | 10627 | |
d2e4a39e AS |
10628 | pc = *pos; |
10629 | *pos += 1; | |
14f9c5c9 AS |
10630 | op = exp->elts[pc].opcode; |
10631 | ||
d2e4a39e | 10632 | switch (op) |
14f9c5c9 AS |
10633 | { |
10634 | default: | |
10635 | *pos -= 1; | |
6e48bd2c | 10636 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
ca1f964d JG |
10637 | |
10638 | if (noside == EVAL_NORMAL) | |
10639 | arg1 = unwrap_value (arg1); | |
6e48bd2c | 10640 | |
edd079d9 | 10641 | /* If evaluating an OP_FLOAT and an EXPECT_TYPE was provided, |
6e48bd2c JB |
10642 | then we need to perform the conversion manually, because |
10643 | evaluate_subexp_standard doesn't do it. This conversion is | |
10644 | necessary in Ada because the different kinds of float/fixed | |
10645 | types in Ada have different representations. | |
10646 | ||
10647 | Similarly, we need to perform the conversion from OP_LONG | |
10648 | ourselves. */ | |
edd079d9 | 10649 | if ((op == OP_FLOAT || op == OP_LONG) && expect_type != NULL) |
b7e22850 | 10650 | arg1 = ada_value_cast (expect_type, arg1); |
6e48bd2c JB |
10651 | |
10652 | return arg1; | |
4c4b4cd2 PH |
10653 | |
10654 | case OP_STRING: | |
10655 | { | |
76a01679 | 10656 | struct value *result; |
5b4ee69b | 10657 | |
76a01679 JB |
10658 | *pos -= 1; |
10659 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10660 | /* The result type will have code OP_STRING, bashed there from | |
10661 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
10662 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
10663 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 10664 | return result; |
4c4b4cd2 | 10665 | } |
14f9c5c9 AS |
10666 | |
10667 | case UNOP_CAST: | |
10668 | (*pos) += 2; | |
10669 | type = exp->elts[pc + 1].type; | |
ced9779b | 10670 | return ada_evaluate_subexp_for_cast (exp, pos, noside, type); |
14f9c5c9 | 10671 | |
4c4b4cd2 PH |
10672 | case UNOP_QUAL: |
10673 | (*pos) += 2; | |
10674 | type = exp->elts[pc + 1].type; | |
10675 | return ada_evaluate_subexp (type, exp, pos, noside); | |
10676 | ||
14f9c5c9 AS |
10677 | case BINOP_ASSIGN: |
10678 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
10679 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
10680 | { | |
10681 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
10682 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
10683 | return arg1; | |
10684 | return ada_value_assign (arg1, arg1); | |
10685 | } | |
003f3813 JB |
10686 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
10687 | except if the lhs of our assignment is a convenience variable. | |
10688 | In the case of assigning to a convenience variable, the lhs | |
10689 | should be exactly the result of the evaluation of the rhs. */ | |
10690 | type = value_type (arg1); | |
10691 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
10692 | type = NULL; | |
10693 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 10694 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 10695 | return arg1; |
df407dfe AC |
10696 | if (ada_is_fixed_point_type (value_type (arg1))) |
10697 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
10698 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 10699 | error |
323e0a4a | 10700 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 10701 | else |
df407dfe | 10702 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 10703 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
10704 | |
10705 | case BINOP_ADD: | |
10706 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10707 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10708 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10709 | goto nosideret; |
2ac8a782 JB |
10710 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
10711 | return (value_from_longest | |
10712 | (value_type (arg1), | |
10713 | value_as_long (arg1) + value_as_long (arg2))); | |
c40cc657 JB |
10714 | if (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR) |
10715 | return (value_from_longest | |
10716 | (value_type (arg2), | |
10717 | value_as_long (arg1) + value_as_long (arg2))); | |
df407dfe AC |
10718 | if ((ada_is_fixed_point_type (value_type (arg1)) |
10719 | || ada_is_fixed_point_type (value_type (arg2))) | |
10720 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 10721 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
10722 | /* Do the addition, and cast the result to the type of the first |
10723 | argument. We cannot cast the result to a reference type, so if | |
10724 | ARG1 is a reference type, find its underlying type. */ | |
10725 | type = value_type (arg1); | |
10726 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
10727 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 10728 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 10729 | return value_cast (type, value_binop (arg1, arg2, BINOP_ADD)); |
14f9c5c9 AS |
10730 | |
10731 | case BINOP_SUB: | |
10732 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10733 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
10734 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10735 | goto nosideret; |
2ac8a782 JB |
10736 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
10737 | return (value_from_longest | |
10738 | (value_type (arg1), | |
10739 | value_as_long (arg1) - value_as_long (arg2))); | |
c40cc657 JB |
10740 | if (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR) |
10741 | return (value_from_longest | |
10742 | (value_type (arg2), | |
10743 | value_as_long (arg1) - value_as_long (arg2))); | |
df407dfe AC |
10744 | if ((ada_is_fixed_point_type (value_type (arg1)) |
10745 | || ada_is_fixed_point_type (value_type (arg2))) | |
10746 | && value_type (arg1) != value_type (arg2)) | |
0963b4bd MS |
10747 | error (_("Operands of fixed-point subtraction " |
10748 | "must have the same type")); | |
b7789565 JB |
10749 | /* Do the substraction, and cast the result to the type of the first |
10750 | argument. We cannot cast the result to a reference type, so if | |
10751 | ARG1 is a reference type, find its underlying type. */ | |
10752 | type = value_type (arg1); | |
10753 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
10754 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 10755 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 10756 | return value_cast (type, value_binop (arg1, arg2, BINOP_SUB)); |
14f9c5c9 AS |
10757 | |
10758 | case BINOP_MUL: | |
10759 | case BINOP_DIV: | |
e1578042 JB |
10760 | case BINOP_REM: |
10761 | case BINOP_MOD: | |
14f9c5c9 AS |
10762 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
10763 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10764 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10765 | goto nosideret; |
e1578042 | 10766 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9c2be529 JB |
10767 | { |
10768 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10769 | return value_zero (value_type (arg1), not_lval); | |
10770 | } | |
14f9c5c9 | 10771 | else |
4c4b4cd2 | 10772 | { |
a53b7a21 | 10773 | type = builtin_type (exp->gdbarch)->builtin_double; |
df407dfe | 10774 | if (ada_is_fixed_point_type (value_type (arg1))) |
a53b7a21 | 10775 | arg1 = cast_from_fixed (type, arg1); |
df407dfe | 10776 | if (ada_is_fixed_point_type (value_type (arg2))) |
a53b7a21 | 10777 | arg2 = cast_from_fixed (type, arg2); |
f44316fa | 10778 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
4c4b4cd2 PH |
10779 | return ada_value_binop (arg1, arg2, op); |
10780 | } | |
10781 | ||
4c4b4cd2 PH |
10782 | case BINOP_EQUAL: |
10783 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 10784 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 10785 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 10786 | if (noside == EVAL_SKIP) |
76a01679 | 10787 | goto nosideret; |
4c4b4cd2 | 10788 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 10789 | tem = 0; |
4c4b4cd2 | 10790 | else |
f44316fa UW |
10791 | { |
10792 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10793 | tem = ada_value_equal (arg1, arg2); | |
10794 | } | |
4c4b4cd2 | 10795 | if (op == BINOP_NOTEQUAL) |
76a01679 | 10796 | tem = !tem; |
fbb06eb1 UW |
10797 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10798 | return value_from_longest (type, (LONGEST) tem); | |
4c4b4cd2 PH |
10799 | |
10800 | case UNOP_NEG: | |
10801 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10802 | if (noside == EVAL_SKIP) | |
10803 | goto nosideret; | |
df407dfe AC |
10804 | else if (ada_is_fixed_point_type (value_type (arg1))) |
10805 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 10806 | else |
f44316fa UW |
10807 | { |
10808 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10809 | return value_neg (arg1); | |
10810 | } | |
4c4b4cd2 | 10811 | |
2330c6c6 JB |
10812 | case BINOP_LOGICAL_AND: |
10813 | case BINOP_LOGICAL_OR: | |
10814 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
10815 | { |
10816 | struct value *val; | |
10817 | ||
10818 | *pos -= 1; | |
10819 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
fbb06eb1 UW |
10820 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10821 | return value_cast (type, val); | |
000d5124 | 10822 | } |
2330c6c6 JB |
10823 | |
10824 | case BINOP_BITWISE_AND: | |
10825 | case BINOP_BITWISE_IOR: | |
10826 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
10827 | { |
10828 | struct value *val; | |
10829 | ||
10830 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
10831 | *pos = pc; | |
10832 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10833 | ||
10834 | return value_cast (value_type (arg1), val); | |
10835 | } | |
2330c6c6 | 10836 | |
14f9c5c9 AS |
10837 | case OP_VAR_VALUE: |
10838 | *pos -= 1; | |
6799def4 | 10839 | |
14f9c5c9 | 10840 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
10841 | { |
10842 | *pos += 4; | |
10843 | goto nosideret; | |
10844 | } | |
da5c522f JB |
10845 | |
10846 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
10847 | /* Only encountered when an unresolved symbol occurs in a |
10848 | context other than a function call, in which case, it is | |
52ce6436 | 10849 | invalid. */ |
323e0a4a | 10850 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 10851 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
da5c522f JB |
10852 | |
10853 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
4c4b4cd2 | 10854 | { |
0c1f74cf | 10855 | type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
31dbc1c5 JB |
10856 | /* Check to see if this is a tagged type. We also need to handle |
10857 | the case where the type is a reference to a tagged type, but | |
10858 | we have to be careful to exclude pointers to tagged types. | |
10859 | The latter should be shown as usual (as a pointer), whereas | |
10860 | a reference should mostly be transparent to the user. */ | |
10861 | if (ada_is_tagged_type (type, 0) | |
023db19c | 10862 | || (TYPE_CODE (type) == TYPE_CODE_REF |
31dbc1c5 | 10863 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0))) |
0d72a7c3 JB |
10864 | { |
10865 | /* Tagged types are a little special in the fact that the real | |
10866 | type is dynamic and can only be determined by inspecting the | |
10867 | object's tag. This means that we need to get the object's | |
10868 | value first (EVAL_NORMAL) and then extract the actual object | |
10869 | type from its tag. | |
10870 | ||
10871 | Note that we cannot skip the final step where we extract | |
10872 | the object type from its tag, because the EVAL_NORMAL phase | |
10873 | results in dynamic components being resolved into fixed ones. | |
10874 | This can cause problems when trying to print the type | |
10875 | description of tagged types whose parent has a dynamic size: | |
10876 | We use the type name of the "_parent" component in order | |
10877 | to print the name of the ancestor type in the type description. | |
10878 | If that component had a dynamic size, the resolution into | |
10879 | a fixed type would result in the loss of that type name, | |
10880 | thus preventing us from printing the name of the ancestor | |
10881 | type in the type description. */ | |
10882 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL); | |
10883 | ||
10884 | if (TYPE_CODE (type) != TYPE_CODE_REF) | |
10885 | { | |
10886 | struct type *actual_type; | |
10887 | ||
10888 | actual_type = type_from_tag (ada_value_tag (arg1)); | |
10889 | if (actual_type == NULL) | |
10890 | /* If, for some reason, we were unable to determine | |
10891 | the actual type from the tag, then use the static | |
10892 | approximation that we just computed as a fallback. | |
10893 | This can happen if the debugging information is | |
10894 | incomplete, for instance. */ | |
10895 | actual_type = type; | |
10896 | return value_zero (actual_type, not_lval); | |
10897 | } | |
10898 | else | |
10899 | { | |
10900 | /* In the case of a ref, ada_coerce_ref takes care | |
10901 | of determining the actual type. But the evaluation | |
10902 | should return a ref as it should be valid to ask | |
10903 | for its address; so rebuild a ref after coerce. */ | |
10904 | arg1 = ada_coerce_ref (arg1); | |
a65cfae5 | 10905 | return value_ref (arg1, TYPE_CODE_REF); |
0d72a7c3 JB |
10906 | } |
10907 | } | |
0c1f74cf | 10908 | |
84754697 JB |
10909 | /* Records and unions for which GNAT encodings have been |
10910 | generated need to be statically fixed as well. | |
10911 | Otherwise, non-static fixing produces a type where | |
10912 | all dynamic properties are removed, which prevents "ptype" | |
10913 | from being able to completely describe the type. | |
10914 | For instance, a case statement in a variant record would be | |
10915 | replaced by the relevant components based on the actual | |
10916 | value of the discriminants. */ | |
10917 | if ((TYPE_CODE (type) == TYPE_CODE_STRUCT | |
10918 | && dynamic_template_type (type) != NULL) | |
10919 | || (TYPE_CODE (type) == TYPE_CODE_UNION | |
10920 | && ada_find_parallel_type (type, "___XVU") != NULL)) | |
10921 | { | |
10922 | *pos += 4; | |
10923 | return value_zero (to_static_fixed_type (type), not_lval); | |
10924 | } | |
4c4b4cd2 | 10925 | } |
da5c522f JB |
10926 | |
10927 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
10928 | return ada_to_fixed_value (arg1); | |
4c4b4cd2 PH |
10929 | |
10930 | case OP_FUNCALL: | |
10931 | (*pos) += 2; | |
10932 | ||
10933 | /* Allocate arg vector, including space for the function to be | |
10934 | called in argvec[0] and a terminating NULL. */ | |
10935 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8d749320 | 10936 | argvec = XALLOCAVEC (struct value *, nargs + 2); |
4c4b4cd2 PH |
10937 | |
10938 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 10939 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 10940 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
10941 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
10942 | else | |
10943 | { | |
10944 | for (tem = 0; tem <= nargs; tem += 1) | |
10945 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10946 | argvec[tem] = 0; | |
10947 | ||
10948 | if (noside == EVAL_SKIP) | |
10949 | goto nosideret; | |
10950 | } | |
10951 | ||
ad82864c JB |
10952 | if (ada_is_constrained_packed_array_type |
10953 | (desc_base_type (value_type (argvec[0])))) | |
4c4b4cd2 | 10954 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
284614f0 JB |
10955 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY |
10956 | && TYPE_FIELD_BITSIZE (value_type (argvec[0]), 0) != 0) | |
10957 | /* This is a packed array that has already been fixed, and | |
10958 | therefore already coerced to a simple array. Nothing further | |
10959 | to do. */ | |
10960 | ; | |
e6c2c623 PMR |
10961 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF) |
10962 | { | |
10963 | /* Make sure we dereference references so that all the code below | |
10964 | feels like it's really handling the referenced value. Wrapping | |
10965 | types (for alignment) may be there, so make sure we strip them as | |
10966 | well. */ | |
10967 | argvec[0] = ada_to_fixed_value (coerce_ref (argvec[0])); | |
10968 | } | |
10969 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
10970 | && VALUE_LVAL (argvec[0]) == lval_memory) | |
10971 | argvec[0] = value_addr (argvec[0]); | |
4c4b4cd2 | 10972 | |
df407dfe | 10973 | type = ada_check_typedef (value_type (argvec[0])); |
720d1a40 JB |
10974 | |
10975 | /* Ada allows us to implicitly dereference arrays when subscripting | |
8f465ea7 JB |
10976 | them. So, if this is an array typedef (encoding use for array |
10977 | access types encoded as fat pointers), strip it now. */ | |
720d1a40 JB |
10978 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
10979 | type = ada_typedef_target_type (type); | |
10980 | ||
4c4b4cd2 PH |
10981 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
10982 | { | |
61ee279c | 10983 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
10984 | { |
10985 | case TYPE_CODE_FUNC: | |
61ee279c | 10986 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
10987 | break; |
10988 | case TYPE_CODE_ARRAY: | |
10989 | break; | |
10990 | case TYPE_CODE_STRUCT: | |
10991 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
10992 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 10993 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
10994 | break; |
10995 | default: | |
323e0a4a | 10996 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 10997 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
10998 | break; |
10999 | } | |
11000 | } | |
11001 | ||
11002 | switch (TYPE_CODE (type)) | |
11003 | { | |
11004 | case TYPE_CODE_FUNC: | |
11005 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
c8ea1972 | 11006 | { |
7022349d PA |
11007 | if (TYPE_TARGET_TYPE (type) == NULL) |
11008 | error_call_unknown_return_type (NULL); | |
11009 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
c8ea1972 | 11010 | } |
7022349d | 11011 | return call_function_by_hand (argvec[0], NULL, nargs, argvec + 1); |
c8ea1972 PH |
11012 | case TYPE_CODE_INTERNAL_FUNCTION: |
11013 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11014 | /* We don't know anything about what the internal | |
11015 | function might return, but we have to return | |
11016 | something. */ | |
11017 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
11018 | not_lval); | |
11019 | else | |
11020 | return call_internal_function (exp->gdbarch, exp->language_defn, | |
11021 | argvec[0], nargs, argvec + 1); | |
11022 | ||
4c4b4cd2 PH |
11023 | case TYPE_CODE_STRUCT: |
11024 | { | |
11025 | int arity; | |
11026 | ||
4c4b4cd2 PH |
11027 | arity = ada_array_arity (type); |
11028 | type = ada_array_element_type (type, nargs); | |
11029 | if (type == NULL) | |
323e0a4a | 11030 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 11031 | if (arity != nargs) |
323e0a4a | 11032 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 11033 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 11034 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
11035 | return |
11036 | unwrap_value (ada_value_subscript | |
11037 | (argvec[0], nargs, argvec + 1)); | |
11038 | } | |
11039 | case TYPE_CODE_ARRAY: | |
11040 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11041 | { | |
11042 | type = ada_array_element_type (type, nargs); | |
11043 | if (type == NULL) | |
323e0a4a | 11044 | error (_("element type of array unknown")); |
4c4b4cd2 | 11045 | else |
0a07e705 | 11046 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
11047 | } |
11048 | return | |
11049 | unwrap_value (ada_value_subscript | |
11050 | (ada_coerce_to_simple_array (argvec[0]), | |
11051 | nargs, argvec + 1)); | |
11052 | case TYPE_CODE_PTR: /* Pointer to array */ | |
4c4b4cd2 PH |
11053 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
11054 | { | |
deede10c | 11055 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); |
4c4b4cd2 PH |
11056 | type = ada_array_element_type (type, nargs); |
11057 | if (type == NULL) | |
323e0a4a | 11058 | error (_("element type of array unknown")); |
4c4b4cd2 | 11059 | else |
0a07e705 | 11060 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
11061 | } |
11062 | return | |
deede10c JB |
11063 | unwrap_value (ada_value_ptr_subscript (argvec[0], |
11064 | nargs, argvec + 1)); | |
4c4b4cd2 PH |
11065 | |
11066 | default: | |
e1d5a0d2 PH |
11067 | error (_("Attempt to index or call something other than an " |
11068 | "array or function")); | |
4c4b4cd2 PH |
11069 | } |
11070 | ||
11071 | case TERNOP_SLICE: | |
11072 | { | |
11073 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11074 | struct value *low_bound_val = | |
11075 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
11076 | struct value *high_bound_val = |
11077 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11078 | LONGEST low_bound; | |
11079 | LONGEST high_bound; | |
5b4ee69b | 11080 | |
994b9211 AC |
11081 | low_bound_val = coerce_ref (low_bound_val); |
11082 | high_bound_val = coerce_ref (high_bound_val); | |
aa715135 JG |
11083 | low_bound = value_as_long (low_bound_val); |
11084 | high_bound = value_as_long (high_bound_val); | |
963a6417 | 11085 | |
4c4b4cd2 PH |
11086 | if (noside == EVAL_SKIP) |
11087 | goto nosideret; | |
11088 | ||
4c4b4cd2 PH |
11089 | /* If this is a reference to an aligner type, then remove all |
11090 | the aligners. */ | |
df407dfe AC |
11091 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
11092 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
11093 | TYPE_TARGET_TYPE (value_type (array)) = | |
11094 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 11095 | |
ad82864c | 11096 | if (ada_is_constrained_packed_array_type (value_type (array))) |
323e0a4a | 11097 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
11098 | |
11099 | /* If this is a reference to an array or an array lvalue, | |
11100 | convert to a pointer. */ | |
df407dfe AC |
11101 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
11102 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
11103 | && VALUE_LVAL (array) == lval_memory)) |
11104 | array = value_addr (array); | |
11105 | ||
1265e4aa | 11106 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 11107 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 11108 | (value_type (array)))) |
0b5d8877 | 11109 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
11110 | |
11111 | array = ada_coerce_to_simple_array_ptr (array); | |
11112 | ||
714e53ab PH |
11113 | /* If we have more than one level of pointer indirection, |
11114 | dereference the value until we get only one level. */ | |
df407dfe AC |
11115 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
11116 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
11117 | == TYPE_CODE_PTR)) |
11118 | array = value_ind (array); | |
11119 | ||
11120 | /* Make sure we really do have an array type before going further, | |
11121 | to avoid a SEGV when trying to get the index type or the target | |
11122 | type later down the road if the debug info generated by | |
11123 | the compiler is incorrect or incomplete. */ | |
df407dfe | 11124 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 11125 | error (_("cannot take slice of non-array")); |
714e53ab | 11126 | |
828292f2 JB |
11127 | if (TYPE_CODE (ada_check_typedef (value_type (array))) |
11128 | == TYPE_CODE_PTR) | |
4c4b4cd2 | 11129 | { |
828292f2 JB |
11130 | struct type *type0 = ada_check_typedef (value_type (array)); |
11131 | ||
0b5d8877 | 11132 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
828292f2 | 11133 | return empty_array (TYPE_TARGET_TYPE (type0), low_bound); |
4c4b4cd2 PH |
11134 | else |
11135 | { | |
11136 | struct type *arr_type0 = | |
828292f2 | 11137 | to_fixed_array_type (TYPE_TARGET_TYPE (type0), NULL, 1); |
5b4ee69b | 11138 | |
f5938064 JG |
11139 | return ada_value_slice_from_ptr (array, arr_type0, |
11140 | longest_to_int (low_bound), | |
11141 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
11142 | } |
11143 | } | |
11144 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11145 | return array; | |
11146 | else if (high_bound < low_bound) | |
df407dfe | 11147 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 11148 | else |
529cad9c PH |
11149 | return ada_value_slice (array, longest_to_int (low_bound), |
11150 | longest_to_int (high_bound)); | |
4c4b4cd2 | 11151 | } |
14f9c5c9 | 11152 | |
4c4b4cd2 PH |
11153 | case UNOP_IN_RANGE: |
11154 | (*pos) += 2; | |
11155 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8008e265 | 11156 | type = check_typedef (exp->elts[pc + 1].type); |
14f9c5c9 | 11157 | |
14f9c5c9 | 11158 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 11159 | goto nosideret; |
14f9c5c9 | 11160 | |
4c4b4cd2 PH |
11161 | switch (TYPE_CODE (type)) |
11162 | { | |
11163 | default: | |
e1d5a0d2 PH |
11164 | lim_warning (_("Membership test incompletely implemented; " |
11165 | "always returns true")); | |
fbb06eb1 UW |
11166 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
11167 | return value_from_longest (type, (LONGEST) 1); | |
4c4b4cd2 PH |
11168 | |
11169 | case TYPE_CODE_RANGE: | |
030b4912 UW |
11170 | arg2 = value_from_longest (type, TYPE_LOW_BOUND (type)); |
11171 | arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type)); | |
f44316fa UW |
11172 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11173 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 UW |
11174 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
11175 | return | |
11176 | value_from_longest (type, | |
4c4b4cd2 PH |
11177 | (value_less (arg1, arg3) |
11178 | || value_equal (arg1, arg3)) | |
11179 | && (value_less (arg2, arg1) | |
11180 | || value_equal (arg2, arg1))); | |
11181 | } | |
11182 | ||
11183 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 11184 | (*pos) += 2; |
4c4b4cd2 PH |
11185 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11186 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 11187 | |
4c4b4cd2 PH |
11188 | if (noside == EVAL_SKIP) |
11189 | goto nosideret; | |
14f9c5c9 | 11190 | |
4c4b4cd2 | 11191 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
fbb06eb1 UW |
11192 | { |
11193 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
11194 | return value_zero (type, not_lval); | |
11195 | } | |
14f9c5c9 | 11196 | |
4c4b4cd2 | 11197 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 11198 | |
1eea4ebd UW |
11199 | type = ada_index_type (value_type (arg2), tem, "range"); |
11200 | if (!type) | |
11201 | type = value_type (arg1); | |
14f9c5c9 | 11202 | |
1eea4ebd UW |
11203 | arg3 = value_from_longest (type, ada_array_bound (arg2, tem, 1)); |
11204 | arg2 = value_from_longest (type, ada_array_bound (arg2, tem, 0)); | |
d2e4a39e | 11205 | |
f44316fa UW |
11206 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11207 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 11208 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 11209 | return |
fbb06eb1 | 11210 | value_from_longest (type, |
4c4b4cd2 PH |
11211 | (value_less (arg1, arg3) |
11212 | || value_equal (arg1, arg3)) | |
11213 | && (value_less (arg2, arg1) | |
11214 | || value_equal (arg2, arg1))); | |
11215 | ||
11216 | case TERNOP_IN_RANGE: | |
11217 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11218 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11219 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11220 | ||
11221 | if (noside == EVAL_SKIP) | |
11222 | goto nosideret; | |
11223 | ||
f44316fa UW |
11224 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
11225 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 11226 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 11227 | return |
fbb06eb1 | 11228 | value_from_longest (type, |
4c4b4cd2 PH |
11229 | (value_less (arg1, arg3) |
11230 | || value_equal (arg1, arg3)) | |
11231 | && (value_less (arg2, arg1) | |
11232 | || value_equal (arg2, arg1))); | |
11233 | ||
11234 | case OP_ATR_FIRST: | |
11235 | case OP_ATR_LAST: | |
11236 | case OP_ATR_LENGTH: | |
11237 | { | |
76a01679 | 11238 | struct type *type_arg; |
5b4ee69b | 11239 | |
76a01679 JB |
11240 | if (exp->elts[*pos].opcode == OP_TYPE) |
11241 | { | |
11242 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
11243 | arg1 = NULL; | |
5bc23cb3 | 11244 | type_arg = check_typedef (exp->elts[pc + 2].type); |
76a01679 JB |
11245 | } |
11246 | else | |
11247 | { | |
11248 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11249 | type_arg = NULL; | |
11250 | } | |
11251 | ||
11252 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 11253 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
11254 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
11255 | *pos += 4; | |
11256 | ||
11257 | if (noside == EVAL_SKIP) | |
11258 | goto nosideret; | |
11259 | ||
11260 | if (type_arg == NULL) | |
11261 | { | |
11262 | arg1 = ada_coerce_ref (arg1); | |
11263 | ||
ad82864c | 11264 | if (ada_is_constrained_packed_array_type (value_type (arg1))) |
76a01679 JB |
11265 | arg1 = ada_coerce_to_simple_array (arg1); |
11266 | ||
aa4fb036 | 11267 | if (op == OP_ATR_LENGTH) |
1eea4ebd | 11268 | type = builtin_type (exp->gdbarch)->builtin_int; |
aa4fb036 JB |
11269 | else |
11270 | { | |
11271 | type = ada_index_type (value_type (arg1), tem, | |
11272 | ada_attribute_name (op)); | |
11273 | if (type == NULL) | |
11274 | type = builtin_type (exp->gdbarch)->builtin_int; | |
11275 | } | |
76a01679 JB |
11276 | |
11277 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1eea4ebd | 11278 | return allocate_value (type); |
76a01679 JB |
11279 | |
11280 | switch (op) | |
11281 | { | |
11282 | default: /* Should never happen. */ | |
323e0a4a | 11283 | error (_("unexpected attribute encountered")); |
76a01679 | 11284 | case OP_ATR_FIRST: |
1eea4ebd UW |
11285 | return value_from_longest |
11286 | (type, ada_array_bound (arg1, tem, 0)); | |
76a01679 | 11287 | case OP_ATR_LAST: |
1eea4ebd UW |
11288 | return value_from_longest |
11289 | (type, ada_array_bound (arg1, tem, 1)); | |
76a01679 | 11290 | case OP_ATR_LENGTH: |
1eea4ebd UW |
11291 | return value_from_longest |
11292 | (type, ada_array_length (arg1, tem)); | |
76a01679 JB |
11293 | } |
11294 | } | |
11295 | else if (discrete_type_p (type_arg)) | |
11296 | { | |
11297 | struct type *range_type; | |
0d5cff50 | 11298 | const char *name = ada_type_name (type_arg); |
5b4ee69b | 11299 | |
76a01679 JB |
11300 | range_type = NULL; |
11301 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
28c85d6c | 11302 | range_type = to_fixed_range_type (type_arg, NULL); |
76a01679 JB |
11303 | if (range_type == NULL) |
11304 | range_type = type_arg; | |
11305 | switch (op) | |
11306 | { | |
11307 | default: | |
323e0a4a | 11308 | error (_("unexpected attribute encountered")); |
76a01679 | 11309 | case OP_ATR_FIRST: |
690cc4eb | 11310 | return value_from_longest |
43bbcdc2 | 11311 | (range_type, ada_discrete_type_low_bound (range_type)); |
76a01679 | 11312 | case OP_ATR_LAST: |
690cc4eb | 11313 | return value_from_longest |
43bbcdc2 | 11314 | (range_type, ada_discrete_type_high_bound (range_type)); |
76a01679 | 11315 | case OP_ATR_LENGTH: |
323e0a4a | 11316 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
11317 | } |
11318 | } | |
11319 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 11320 | error (_("unimplemented type attribute")); |
76a01679 JB |
11321 | else |
11322 | { | |
11323 | LONGEST low, high; | |
11324 | ||
ad82864c JB |
11325 | if (ada_is_constrained_packed_array_type (type_arg)) |
11326 | type_arg = decode_constrained_packed_array_type (type_arg); | |
76a01679 | 11327 | |
aa4fb036 | 11328 | if (op == OP_ATR_LENGTH) |
1eea4ebd | 11329 | type = builtin_type (exp->gdbarch)->builtin_int; |
aa4fb036 JB |
11330 | else |
11331 | { | |
11332 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); | |
11333 | if (type == NULL) | |
11334 | type = builtin_type (exp->gdbarch)->builtin_int; | |
11335 | } | |
1eea4ebd | 11336 | |
76a01679 JB |
11337 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
11338 | return allocate_value (type); | |
11339 | ||
11340 | switch (op) | |
11341 | { | |
11342 | default: | |
323e0a4a | 11343 | error (_("unexpected attribute encountered")); |
76a01679 | 11344 | case OP_ATR_FIRST: |
1eea4ebd | 11345 | low = ada_array_bound_from_type (type_arg, tem, 0); |
76a01679 JB |
11346 | return value_from_longest (type, low); |
11347 | case OP_ATR_LAST: | |
1eea4ebd | 11348 | high = ada_array_bound_from_type (type_arg, tem, 1); |
76a01679 JB |
11349 | return value_from_longest (type, high); |
11350 | case OP_ATR_LENGTH: | |
1eea4ebd UW |
11351 | low = ada_array_bound_from_type (type_arg, tem, 0); |
11352 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
76a01679 JB |
11353 | return value_from_longest (type, high - low + 1); |
11354 | } | |
11355 | } | |
14f9c5c9 AS |
11356 | } |
11357 | ||
4c4b4cd2 PH |
11358 | case OP_ATR_TAG: |
11359 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11360 | if (noside == EVAL_SKIP) | |
76a01679 | 11361 | goto nosideret; |
4c4b4cd2 PH |
11362 | |
11363 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 11364 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
11365 | |
11366 | return ada_value_tag (arg1); | |
11367 | ||
11368 | case OP_ATR_MIN: | |
11369 | case OP_ATR_MAX: | |
11370 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
11371 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11372 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11373 | if (noside == EVAL_SKIP) | |
76a01679 | 11374 | goto nosideret; |
d2e4a39e | 11375 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 11376 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 11377 | else |
f44316fa UW |
11378 | { |
11379 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
11380 | return value_binop (arg1, arg2, | |
11381 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
11382 | } | |
14f9c5c9 | 11383 | |
4c4b4cd2 PH |
11384 | case OP_ATR_MODULUS: |
11385 | { | |
31dedfee | 11386 | struct type *type_arg = check_typedef (exp->elts[pc + 2].type); |
4c4b4cd2 | 11387 | |
5b4ee69b | 11388 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
76a01679 JB |
11389 | if (noside == EVAL_SKIP) |
11390 | goto nosideret; | |
4c4b4cd2 | 11391 | |
76a01679 | 11392 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 11393 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 11394 | |
76a01679 JB |
11395 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
11396 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
11397 | } |
11398 | ||
11399 | ||
11400 | case OP_ATR_POS: | |
11401 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
11402 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11403 | if (noside == EVAL_SKIP) | |
76a01679 | 11404 | goto nosideret; |
3cb382c9 UW |
11405 | type = builtin_type (exp->gdbarch)->builtin_int; |
11406 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11407 | return value_zero (type, not_lval); | |
14f9c5c9 | 11408 | else |
3cb382c9 | 11409 | return value_pos_atr (type, arg1); |
14f9c5c9 | 11410 | |
4c4b4cd2 PH |
11411 | case OP_ATR_SIZE: |
11412 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8c1c099f JB |
11413 | type = value_type (arg1); |
11414 | ||
11415 | /* If the argument is a reference, then dereference its type, since | |
11416 | the user is really asking for the size of the actual object, | |
11417 | not the size of the pointer. */ | |
11418 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
11419 | type = TYPE_TARGET_TYPE (type); | |
11420 | ||
4c4b4cd2 | 11421 | if (noside == EVAL_SKIP) |
76a01679 | 11422 | goto nosideret; |
4c4b4cd2 | 11423 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
22601c15 | 11424 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
4c4b4cd2 | 11425 | else |
22601c15 | 11426 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
8c1c099f | 11427 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); |
4c4b4cd2 PH |
11428 | |
11429 | case OP_ATR_VAL: | |
11430 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 11431 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 11432 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 11433 | if (noside == EVAL_SKIP) |
76a01679 | 11434 | goto nosideret; |
4c4b4cd2 | 11435 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 11436 | return value_zero (type, not_lval); |
4c4b4cd2 | 11437 | else |
76a01679 | 11438 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
11439 | |
11440 | case BINOP_EXP: | |
11441 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11442 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11443 | if (noside == EVAL_SKIP) | |
11444 | goto nosideret; | |
11445 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 11446 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 | 11447 | else |
f44316fa UW |
11448 | { |
11449 | /* For integer exponentiation operations, | |
11450 | only promote the first argument. */ | |
11451 | if (is_integral_type (value_type (arg2))) | |
11452 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
11453 | else | |
11454 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
11455 | ||
11456 | return value_binop (arg1, arg2, op); | |
11457 | } | |
4c4b4cd2 PH |
11458 | |
11459 | case UNOP_PLUS: | |
11460 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11461 | if (noside == EVAL_SKIP) | |
11462 | goto nosideret; | |
11463 | else | |
11464 | return arg1; | |
11465 | ||
11466 | case UNOP_ABS: | |
11467 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
11468 | if (noside == EVAL_SKIP) | |
11469 | goto nosideret; | |
f44316fa | 11470 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
df407dfe | 11471 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 11472 | return value_neg (arg1); |
14f9c5c9 | 11473 | else |
4c4b4cd2 | 11474 | return arg1; |
14f9c5c9 AS |
11475 | |
11476 | case UNOP_IND: | |
5ec18f2b | 11477 | preeval_pos = *pos; |
6b0d7253 | 11478 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
14f9c5c9 | 11479 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 11480 | goto nosideret; |
df407dfe | 11481 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 11482 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
11483 | { |
11484 | if (ada_is_array_descriptor_type (type)) | |
11485 | /* GDB allows dereferencing GNAT array descriptors. */ | |
11486 | { | |
11487 | struct type *arrType = ada_type_of_array (arg1, 0); | |
5b4ee69b | 11488 | |
4c4b4cd2 | 11489 | if (arrType == NULL) |
323e0a4a | 11490 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 11491 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
11492 | } |
11493 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
11494 | || TYPE_CODE (type) == TYPE_CODE_REF | |
11495 | /* In C you can dereference an array to get the 1st elt. */ | |
11496 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab | 11497 | { |
5ec18f2b JG |
11498 | /* As mentioned in the OP_VAR_VALUE case, tagged types can |
11499 | only be determined by inspecting the object's tag. | |
11500 | This means that we need to evaluate completely the | |
11501 | expression in order to get its type. */ | |
11502 | ||
023db19c JB |
11503 | if ((TYPE_CODE (type) == TYPE_CODE_REF |
11504 | || TYPE_CODE (type) == TYPE_CODE_PTR) | |
5ec18f2b JG |
11505 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0)) |
11506 | { | |
11507 | arg1 = evaluate_subexp (NULL_TYPE, exp, &preeval_pos, | |
11508 | EVAL_NORMAL); | |
11509 | type = value_type (ada_value_ind (arg1)); | |
11510 | } | |
11511 | else | |
11512 | { | |
11513 | type = to_static_fixed_type | |
11514 | (ada_aligned_type | |
11515 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
11516 | } | |
c1b5a1a6 | 11517 | ada_ensure_varsize_limit (type); |
714e53ab PH |
11518 | return value_zero (type, lval_memory); |
11519 | } | |
4c4b4cd2 | 11520 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
6b0d7253 JB |
11521 | { |
11522 | /* GDB allows dereferencing an int. */ | |
11523 | if (expect_type == NULL) | |
11524 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
11525 | lval_memory); | |
11526 | else | |
11527 | { | |
11528 | expect_type = | |
11529 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
11530 | return value_zero (expect_type, lval_memory); | |
11531 | } | |
11532 | } | |
4c4b4cd2 | 11533 | else |
323e0a4a | 11534 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 11535 | } |
0963b4bd | 11536 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 11537 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 11538 | |
96967637 JB |
11539 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
11540 | /* GDB allows dereferencing an int. If we were given | |
11541 | the expect_type, then use that as the target type. | |
11542 | Otherwise, assume that the target type is an int. */ | |
11543 | { | |
11544 | if (expect_type != NULL) | |
11545 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
11546 | arg1)); | |
11547 | else | |
11548 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
11549 | (CORE_ADDR) value_as_address (arg1)); | |
11550 | } | |
6b0d7253 | 11551 | |
4c4b4cd2 PH |
11552 | if (ada_is_array_descriptor_type (type)) |
11553 | /* GDB allows dereferencing GNAT array descriptors. */ | |
11554 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 11555 | else |
4c4b4cd2 | 11556 | return ada_value_ind (arg1); |
14f9c5c9 AS |
11557 | |
11558 | case STRUCTOP_STRUCT: | |
11559 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
11560 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
5ec18f2b | 11561 | preeval_pos = *pos; |
14f9c5c9 AS |
11562 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
11563 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 11564 | goto nosideret; |
14f9c5c9 | 11565 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 11566 | { |
df407dfe | 11567 | struct type *type1 = value_type (arg1); |
5b4ee69b | 11568 | |
76a01679 JB |
11569 | if (ada_is_tagged_type (type1, 1)) |
11570 | { | |
11571 | type = ada_lookup_struct_elt_type (type1, | |
11572 | &exp->elts[pc + 2].string, | |
988f6b3d | 11573 | 1, 1); |
5ec18f2b JG |
11574 | |
11575 | /* If the field is not found, check if it exists in the | |
11576 | extension of this object's type. This means that we | |
11577 | need to evaluate completely the expression. */ | |
11578 | ||
76a01679 | 11579 | if (type == NULL) |
5ec18f2b JG |
11580 | { |
11581 | arg1 = evaluate_subexp (NULL_TYPE, exp, &preeval_pos, | |
11582 | EVAL_NORMAL); | |
11583 | arg1 = ada_value_struct_elt (arg1, | |
11584 | &exp->elts[pc + 2].string, | |
11585 | 0); | |
11586 | arg1 = unwrap_value (arg1); | |
11587 | type = value_type (ada_to_fixed_value (arg1)); | |
11588 | } | |
76a01679 JB |
11589 | } |
11590 | else | |
11591 | type = | |
11592 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
988f6b3d | 11593 | 0); |
76a01679 JB |
11594 | |
11595 | return value_zero (ada_aligned_type (type), lval_memory); | |
11596 | } | |
14f9c5c9 | 11597 | else |
a579cd9a MW |
11598 | { |
11599 | arg1 = ada_value_struct_elt (arg1, &exp->elts[pc + 2].string, 0); | |
11600 | arg1 = unwrap_value (arg1); | |
11601 | return ada_to_fixed_value (arg1); | |
11602 | } | |
284614f0 | 11603 | |
14f9c5c9 | 11604 | case OP_TYPE: |
4c4b4cd2 PH |
11605 | /* The value is not supposed to be used. This is here to make it |
11606 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
11607 | (*pos) += 2; |
11608 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 11609 | goto nosideret; |
14f9c5c9 | 11610 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 11611 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 11612 | else |
323e0a4a | 11613 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
11614 | |
11615 | case OP_AGGREGATE: | |
11616 | case OP_CHOICES: | |
11617 | case OP_OTHERS: | |
11618 | case OP_DISCRETE_RANGE: | |
11619 | case OP_POSITIONAL: | |
11620 | case OP_NAME: | |
11621 | if (noside == EVAL_NORMAL) | |
11622 | switch (op) | |
11623 | { | |
11624 | case OP_NAME: | |
11625 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 11626 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
11627 | case OP_AGGREGATE: |
11628 | error (_("Aggregates only allowed on the right of an assignment")); | |
11629 | default: | |
0963b4bd MS |
11630 | internal_error (__FILE__, __LINE__, |
11631 | _("aggregate apparently mangled")); | |
52ce6436 PH |
11632 | } |
11633 | ||
11634 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
11635 | *pos += oplen - 1; | |
11636 | for (tem = 0; tem < nargs; tem += 1) | |
11637 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
11638 | goto nosideret; | |
14f9c5c9 AS |
11639 | } |
11640 | ||
11641 | nosideret: | |
ced9779b | 11642 | return eval_skip_value (exp); |
14f9c5c9 | 11643 | } |
14f9c5c9 | 11644 | \f |
d2e4a39e | 11645 | |
4c4b4cd2 | 11646 | /* Fixed point */ |
14f9c5c9 AS |
11647 | |
11648 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
11649 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 11650 | Otherwise, return NULL. */ |
14f9c5c9 | 11651 | |
d2e4a39e | 11652 | static const char * |
ebf56fd3 | 11653 | fixed_type_info (struct type *type) |
14f9c5c9 | 11654 | { |
d2e4a39e | 11655 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
11656 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
11657 | ||
d2e4a39e AS |
11658 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
11659 | { | |
14f9c5c9 | 11660 | const char *tail = strstr (name, "___XF_"); |
5b4ee69b | 11661 | |
14f9c5c9 | 11662 | if (tail == NULL) |
4c4b4cd2 | 11663 | return NULL; |
d2e4a39e | 11664 | else |
4c4b4cd2 | 11665 | return tail + 5; |
14f9c5c9 AS |
11666 | } |
11667 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
11668 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
11669 | else | |
11670 | return NULL; | |
11671 | } | |
11672 | ||
4c4b4cd2 | 11673 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
11674 | |
11675 | int | |
ebf56fd3 | 11676 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
11677 | { |
11678 | return fixed_type_info (type) != NULL; | |
11679 | } | |
11680 | ||
4c4b4cd2 PH |
11681 | /* Return non-zero iff TYPE represents a System.Address type. */ |
11682 | ||
11683 | int | |
11684 | ada_is_system_address_type (struct type *type) | |
11685 | { | |
11686 | return (TYPE_NAME (type) | |
11687 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
11688 | } | |
11689 | ||
14f9c5c9 | 11690 | /* Assuming that TYPE is the representation of an Ada fixed-point |
50eff16b UW |
11691 | type, return the target floating-point type to be used to represent |
11692 | of this type during internal computation. */ | |
11693 | ||
11694 | static struct type * | |
11695 | ada_scaling_type (struct type *type) | |
11696 | { | |
11697 | return builtin_type (get_type_arch (type))->builtin_long_double; | |
11698 | } | |
11699 | ||
11700 | /* Assuming that TYPE is the representation of an Ada fixed-point | |
11701 | type, return its delta, or NULL if the type is malformed and the | |
4c4b4cd2 | 11702 | delta cannot be determined. */ |
14f9c5c9 | 11703 | |
50eff16b | 11704 | struct value * |
ebf56fd3 | 11705 | ada_delta (struct type *type) |
14f9c5c9 AS |
11706 | { |
11707 | const char *encoding = fixed_type_info (type); | |
50eff16b UW |
11708 | struct type *scale_type = ada_scaling_type (type); |
11709 | ||
11710 | long long num, den; | |
11711 | ||
11712 | if (sscanf (encoding, "_%lld_%lld", &num, &den) < 2) | |
11713 | return nullptr; | |
d2e4a39e | 11714 | else |
50eff16b UW |
11715 | return value_binop (value_from_longest (scale_type, num), |
11716 | value_from_longest (scale_type, den), BINOP_DIV); | |
14f9c5c9 AS |
11717 | } |
11718 | ||
11719 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 11720 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 | 11721 | |
50eff16b UW |
11722 | struct value * |
11723 | ada_scaling_factor (struct type *type) | |
14f9c5c9 AS |
11724 | { |
11725 | const char *encoding = fixed_type_info (type); | |
50eff16b UW |
11726 | struct type *scale_type = ada_scaling_type (type); |
11727 | ||
11728 | long long num0, den0, num1, den1; | |
14f9c5c9 | 11729 | int n; |
d2e4a39e | 11730 | |
50eff16b | 11731 | n = sscanf (encoding, "_%lld_%lld_%lld_%lld", |
facc390f | 11732 | &num0, &den0, &num1, &den1); |
14f9c5c9 AS |
11733 | |
11734 | if (n < 2) | |
50eff16b | 11735 | return value_from_longest (scale_type, 1); |
14f9c5c9 | 11736 | else if (n == 4) |
50eff16b UW |
11737 | return value_binop (value_from_longest (scale_type, num1), |
11738 | value_from_longest (scale_type, den1), BINOP_DIV); | |
d2e4a39e | 11739 | else |
50eff16b UW |
11740 | return value_binop (value_from_longest (scale_type, num0), |
11741 | value_from_longest (scale_type, den0), BINOP_DIV); | |
14f9c5c9 AS |
11742 | } |
11743 | ||
14f9c5c9 | 11744 | \f |
d2e4a39e | 11745 | |
4c4b4cd2 | 11746 | /* Range types */ |
14f9c5c9 AS |
11747 | |
11748 | /* Scan STR beginning at position K for a discriminant name, and | |
11749 | return the value of that discriminant field of DVAL in *PX. If | |
11750 | PNEW_K is not null, put the position of the character beyond the | |
11751 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 11752 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
11753 | |
11754 | static int | |
108d56a4 | 11755 | scan_discrim_bound (const char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 11756 | int *pnew_k) |
14f9c5c9 AS |
11757 | { |
11758 | static char *bound_buffer = NULL; | |
11759 | static size_t bound_buffer_len = 0; | |
5da1a4d3 | 11760 | const char *pstart, *pend, *bound; |
d2e4a39e | 11761 | struct value *bound_val; |
14f9c5c9 AS |
11762 | |
11763 | if (dval == NULL || str == NULL || str[k] == '\0') | |
11764 | return 0; | |
11765 | ||
5da1a4d3 SM |
11766 | pstart = str + k; |
11767 | pend = strstr (pstart, "__"); | |
14f9c5c9 AS |
11768 | if (pend == NULL) |
11769 | { | |
5da1a4d3 | 11770 | bound = pstart; |
14f9c5c9 AS |
11771 | k += strlen (bound); |
11772 | } | |
d2e4a39e | 11773 | else |
14f9c5c9 | 11774 | { |
5da1a4d3 SM |
11775 | int len = pend - pstart; |
11776 | ||
11777 | /* Strip __ and beyond. */ | |
11778 | GROW_VECT (bound_buffer, bound_buffer_len, len + 1); | |
11779 | strncpy (bound_buffer, pstart, len); | |
11780 | bound_buffer[len] = '\0'; | |
11781 | ||
14f9c5c9 | 11782 | bound = bound_buffer; |
d2e4a39e | 11783 | k = pend - str; |
14f9c5c9 | 11784 | } |
d2e4a39e | 11785 | |
df407dfe | 11786 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
11787 | if (bound_val == NULL) |
11788 | return 0; | |
11789 | ||
11790 | *px = value_as_long (bound_val); | |
11791 | if (pnew_k != NULL) | |
11792 | *pnew_k = k; | |
11793 | return 1; | |
11794 | } | |
11795 | ||
11796 | /* Value of variable named NAME in the current environment. If | |
11797 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
11798 | otherwise causes an error with message ERR_MSG. */ |
11799 | ||
d2e4a39e | 11800 | static struct value * |
edb0c9cb | 11801 | get_var_value (const char *name, const char *err_msg) |
14f9c5c9 | 11802 | { |
b5ec771e | 11803 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
14f9c5c9 | 11804 | |
b5ec771e PA |
11805 | struct block_symbol *syms; |
11806 | int nsyms = ada_lookup_symbol_list_worker (lookup_name, | |
11807 | get_selected_block (0), | |
11808 | VAR_DOMAIN, &syms, 1); | |
ec6a20c2 | 11809 | struct cleanup *old_chain = make_cleanup (xfree, syms); |
14f9c5c9 AS |
11810 | |
11811 | if (nsyms != 1) | |
11812 | { | |
ec6a20c2 | 11813 | do_cleanups (old_chain); |
14f9c5c9 | 11814 | if (err_msg == NULL) |
4c4b4cd2 | 11815 | return 0; |
14f9c5c9 | 11816 | else |
8a3fe4f8 | 11817 | error (("%s"), err_msg); |
14f9c5c9 AS |
11818 | } |
11819 | ||
ec6a20c2 JB |
11820 | struct value *result = value_of_variable (syms[0].symbol, syms[0].block); |
11821 | do_cleanups (old_chain); | |
11822 | return result; | |
14f9c5c9 | 11823 | } |
d2e4a39e | 11824 | |
edb0c9cb PA |
11825 | /* Value of integer variable named NAME in the current environment. |
11826 | If no such variable is found, returns false. Otherwise, sets VALUE | |
11827 | to the variable's value and returns true. */ | |
4c4b4cd2 | 11828 | |
edb0c9cb PA |
11829 | bool |
11830 | get_int_var_value (const char *name, LONGEST &value) | |
14f9c5c9 | 11831 | { |
4c4b4cd2 | 11832 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 11833 | |
14f9c5c9 | 11834 | if (var_val == 0) |
edb0c9cb PA |
11835 | return false; |
11836 | ||
11837 | value = value_as_long (var_val); | |
11838 | return true; | |
14f9c5c9 | 11839 | } |
d2e4a39e | 11840 | |
14f9c5c9 AS |
11841 | |
11842 | /* Return a range type whose base type is that of the range type named | |
11843 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 11844 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
11845 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
11846 | corresponding range type from debug information; fall back to using it | |
11847 | if symbol lookup fails. If a new type must be created, allocate it | |
11848 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
11849 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 11850 | |
d2e4a39e | 11851 | static struct type * |
28c85d6c | 11852 | to_fixed_range_type (struct type *raw_type, struct value *dval) |
14f9c5c9 | 11853 | { |
0d5cff50 | 11854 | const char *name; |
14f9c5c9 | 11855 | struct type *base_type; |
108d56a4 | 11856 | const char *subtype_info; |
14f9c5c9 | 11857 | |
28c85d6c JB |
11858 | gdb_assert (raw_type != NULL); |
11859 | gdb_assert (TYPE_NAME (raw_type) != NULL); | |
dddfab26 | 11860 | |
1ce677a4 | 11861 | if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) |
14f9c5c9 AS |
11862 | base_type = TYPE_TARGET_TYPE (raw_type); |
11863 | else | |
11864 | base_type = raw_type; | |
11865 | ||
28c85d6c | 11866 | name = TYPE_NAME (raw_type); |
14f9c5c9 AS |
11867 | subtype_info = strstr (name, "___XD"); |
11868 | if (subtype_info == NULL) | |
690cc4eb | 11869 | { |
43bbcdc2 PH |
11870 | LONGEST L = ada_discrete_type_low_bound (raw_type); |
11871 | LONGEST U = ada_discrete_type_high_bound (raw_type); | |
5b4ee69b | 11872 | |
690cc4eb PH |
11873 | if (L < INT_MIN || U > INT_MAX) |
11874 | return raw_type; | |
11875 | else | |
0c9c3474 SA |
11876 | return create_static_range_type (alloc_type_copy (raw_type), raw_type, |
11877 | L, U); | |
690cc4eb | 11878 | } |
14f9c5c9 AS |
11879 | else |
11880 | { | |
11881 | static char *name_buf = NULL; | |
11882 | static size_t name_len = 0; | |
11883 | int prefix_len = subtype_info - name; | |
11884 | LONGEST L, U; | |
11885 | struct type *type; | |
108d56a4 | 11886 | const char *bounds_str; |
14f9c5c9 AS |
11887 | int n; |
11888 | ||
11889 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
11890 | strncpy (name_buf, name, prefix_len); | |
11891 | name_buf[prefix_len] = '\0'; | |
11892 | ||
11893 | subtype_info += 5; | |
11894 | bounds_str = strchr (subtype_info, '_'); | |
11895 | n = 1; | |
11896 | ||
d2e4a39e | 11897 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
11898 | { |
11899 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
11900 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
11901 | return raw_type; | |
11902 | if (bounds_str[n] == '_') | |
11903 | n += 2; | |
0963b4bd | 11904 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ |
4c4b4cd2 PH |
11905 | n += 1; |
11906 | subtype_info += 1; | |
11907 | } | |
d2e4a39e | 11908 | else |
4c4b4cd2 | 11909 | { |
4c4b4cd2 | 11910 | strcpy (name_buf + prefix_len, "___L"); |
edb0c9cb | 11911 | if (!get_int_var_value (name_buf, L)) |
4c4b4cd2 | 11912 | { |
323e0a4a | 11913 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
11914 | L = 1; |
11915 | } | |
11916 | } | |
14f9c5c9 | 11917 | |
d2e4a39e | 11918 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
11919 | { |
11920 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
11921 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
11922 | return raw_type; | |
11923 | } | |
d2e4a39e | 11924 | else |
4c4b4cd2 | 11925 | { |
4c4b4cd2 | 11926 | strcpy (name_buf + prefix_len, "___U"); |
edb0c9cb | 11927 | if (!get_int_var_value (name_buf, U)) |
4c4b4cd2 | 11928 | { |
323e0a4a | 11929 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
11930 | U = L; |
11931 | } | |
11932 | } | |
14f9c5c9 | 11933 | |
0c9c3474 SA |
11934 | type = create_static_range_type (alloc_type_copy (raw_type), |
11935 | base_type, L, U); | |
f5a91472 JB |
11936 | /* create_static_range_type alters the resulting type's length |
11937 | to match the size of the base_type, which is not what we want. | |
11938 | Set it back to the original range type's length. */ | |
11939 | TYPE_LENGTH (type) = TYPE_LENGTH (raw_type); | |
d2e4a39e | 11940 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
11941 | return type; |
11942 | } | |
11943 | } | |
11944 | ||
4c4b4cd2 PH |
11945 | /* True iff NAME is the name of a range type. */ |
11946 | ||
14f9c5c9 | 11947 | int |
d2e4a39e | 11948 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
11949 | { |
11950 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 11951 | } |
14f9c5c9 | 11952 | \f |
d2e4a39e | 11953 | |
4c4b4cd2 PH |
11954 | /* Modular types */ |
11955 | ||
11956 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 11957 | |
14f9c5c9 | 11958 | int |
d2e4a39e | 11959 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 11960 | { |
18af8284 | 11961 | struct type *subranged_type = get_base_type (type); |
14f9c5c9 AS |
11962 | |
11963 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
690cc4eb | 11964 | && TYPE_CODE (subranged_type) == TYPE_CODE_INT |
4c4b4cd2 | 11965 | && TYPE_UNSIGNED (subranged_type)); |
14f9c5c9 AS |
11966 | } |
11967 | ||
4c4b4cd2 PH |
11968 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
11969 | ||
61ee279c | 11970 | ULONGEST |
0056e4d5 | 11971 | ada_modulus (struct type *type) |
14f9c5c9 | 11972 | { |
43bbcdc2 | 11973 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 11974 | } |
d2e4a39e | 11975 | \f |
f7f9143b JB |
11976 | |
11977 | /* Ada exception catchpoint support: | |
11978 | --------------------------------- | |
11979 | ||
11980 | We support 3 kinds of exception catchpoints: | |
11981 | . catchpoints on Ada exceptions | |
11982 | . catchpoints on unhandled Ada exceptions | |
11983 | . catchpoints on failed assertions | |
11984 | ||
11985 | Exceptions raised during failed assertions, or unhandled exceptions | |
11986 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
11987 | However, we can easily differentiate these two special cases, and having | |
11988 | the option to distinguish these two cases from the rest can be useful | |
11989 | to zero-in on certain situations. | |
11990 | ||
11991 | Exception catchpoints are a specialized form of breakpoint, | |
11992 | since they rely on inserting breakpoints inside known routines | |
11993 | of the GNAT runtime. The implementation therefore uses a standard | |
11994 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
11995 | of breakpoint_ops. | |
11996 | ||
0259addd JB |
11997 | Support in the runtime for exception catchpoints have been changed |
11998 | a few times already, and these changes affect the implementation | |
11999 | of these catchpoints. In order to be able to support several | |
12000 | variants of the runtime, we use a sniffer that will determine | |
28010a5d | 12001 | the runtime variant used by the program being debugged. */ |
f7f9143b | 12002 | |
82eacd52 JB |
12003 | /* Ada's standard exceptions. |
12004 | ||
12005 | The Ada 83 standard also defined Numeric_Error. But there so many | |
12006 | situations where it was unclear from the Ada 83 Reference Manual | |
12007 | (RM) whether Constraint_Error or Numeric_Error should be raised, | |
12008 | that the ARG (Ada Rapporteur Group) eventually issued a Binding | |
12009 | Interpretation saying that anytime the RM says that Numeric_Error | |
12010 | should be raised, the implementation may raise Constraint_Error. | |
12011 | Ada 95 went one step further and pretty much removed Numeric_Error | |
12012 | from the list of standard exceptions (it made it a renaming of | |
12013 | Constraint_Error, to help preserve compatibility when compiling | |
12014 | an Ada83 compiler). As such, we do not include Numeric_Error from | |
12015 | this list of standard exceptions. */ | |
3d0b0fa3 | 12016 | |
a121b7c1 | 12017 | static const char *standard_exc[] = { |
3d0b0fa3 JB |
12018 | "constraint_error", |
12019 | "program_error", | |
12020 | "storage_error", | |
12021 | "tasking_error" | |
12022 | }; | |
12023 | ||
0259addd JB |
12024 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
12025 | ||
12026 | /* A structure that describes how to support exception catchpoints | |
12027 | for a given executable. */ | |
12028 | ||
12029 | struct exception_support_info | |
12030 | { | |
12031 | /* The name of the symbol to break on in order to insert | |
12032 | a catchpoint on exceptions. */ | |
12033 | const char *catch_exception_sym; | |
12034 | ||
12035 | /* The name of the symbol to break on in order to insert | |
12036 | a catchpoint on unhandled exceptions. */ | |
12037 | const char *catch_exception_unhandled_sym; | |
12038 | ||
12039 | /* The name of the symbol to break on in order to insert | |
12040 | a catchpoint on failed assertions. */ | |
12041 | const char *catch_assert_sym; | |
12042 | ||
9f757bf7 XR |
12043 | /* The name of the symbol to break on in order to insert |
12044 | a catchpoint on exception handling. */ | |
12045 | const char *catch_handlers_sym; | |
12046 | ||
0259addd JB |
12047 | /* Assuming that the inferior just triggered an unhandled exception |
12048 | catchpoint, this function is responsible for returning the address | |
12049 | in inferior memory where the name of that exception is stored. | |
12050 | Return zero if the address could not be computed. */ | |
12051 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
12052 | }; | |
12053 | ||
12054 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
12055 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
12056 | ||
12057 | /* The following exception support info structure describes how to | |
12058 | implement exception catchpoints with the latest version of the | |
12059 | Ada runtime (as of 2007-03-06). */ | |
12060 | ||
12061 | static const struct exception_support_info default_exception_support_info = | |
12062 | { | |
12063 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
12064 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
12065 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 12066 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
12067 | ada_unhandled_exception_name_addr |
12068 | }; | |
12069 | ||
12070 | /* The following exception support info structure describes how to | |
12071 | implement exception catchpoints with a slightly older version | |
12072 | of the Ada runtime. */ | |
12073 | ||
12074 | static const struct exception_support_info exception_support_info_fallback = | |
12075 | { | |
12076 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
12077 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
12078 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 12079 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
12080 | ada_unhandled_exception_name_addr_from_raise |
12081 | }; | |
12082 | ||
f17011e0 JB |
12083 | /* Return nonzero if we can detect the exception support routines |
12084 | described in EINFO. | |
12085 | ||
12086 | This function errors out if an abnormal situation is detected | |
12087 | (for instance, if we find the exception support routines, but | |
12088 | that support is found to be incomplete). */ | |
12089 | ||
12090 | static int | |
12091 | ada_has_this_exception_support (const struct exception_support_info *einfo) | |
12092 | { | |
12093 | struct symbol *sym; | |
12094 | ||
12095 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
12096 | that should be compiled with debugging information. As a result, we | |
12097 | expect to find that symbol in the symtabs. */ | |
12098 | ||
12099 | sym = standard_lookup (einfo->catch_exception_sym, NULL, VAR_DOMAIN); | |
12100 | if (sym == NULL) | |
a6af7abe JB |
12101 | { |
12102 | /* Perhaps we did not find our symbol because the Ada runtime was | |
12103 | compiled without debugging info, or simply stripped of it. | |
12104 | It happens on some GNU/Linux distributions for instance, where | |
12105 | users have to install a separate debug package in order to get | |
12106 | the runtime's debugging info. In that situation, let the user | |
12107 | know why we cannot insert an Ada exception catchpoint. | |
12108 | ||
12109 | Note: Just for the purpose of inserting our Ada exception | |
12110 | catchpoint, we could rely purely on the associated minimal symbol. | |
12111 | But we would be operating in degraded mode anyway, since we are | |
12112 | still lacking the debugging info needed later on to extract | |
12113 | the name of the exception being raised (this name is printed in | |
12114 | the catchpoint message, and is also used when trying to catch | |
12115 | a specific exception). We do not handle this case for now. */ | |
3b7344d5 | 12116 | struct bound_minimal_symbol msym |
1c8e84b0 JB |
12117 | = lookup_minimal_symbol (einfo->catch_exception_sym, NULL, NULL); |
12118 | ||
3b7344d5 | 12119 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) |
a6af7abe JB |
12120 | error (_("Your Ada runtime appears to be missing some debugging " |
12121 | "information.\nCannot insert Ada exception catchpoint " | |
12122 | "in this configuration.")); | |
12123 | ||
12124 | return 0; | |
12125 | } | |
f17011e0 JB |
12126 | |
12127 | /* Make sure that the symbol we found corresponds to a function. */ | |
12128 | ||
12129 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
12130 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
12131 | SYMBOL_LINKAGE_NAME (sym), SYMBOL_CLASS (sym)); | |
12132 | ||
12133 | return 1; | |
12134 | } | |
12135 | ||
0259addd JB |
12136 | /* Inspect the Ada runtime and determine which exception info structure |
12137 | should be used to provide support for exception catchpoints. | |
12138 | ||
3eecfa55 JB |
12139 | This function will always set the per-inferior exception_info, |
12140 | or raise an error. */ | |
0259addd JB |
12141 | |
12142 | static void | |
12143 | ada_exception_support_info_sniffer (void) | |
12144 | { | |
3eecfa55 | 12145 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
0259addd JB |
12146 | |
12147 | /* If the exception info is already known, then no need to recompute it. */ | |
3eecfa55 | 12148 | if (data->exception_info != NULL) |
0259addd JB |
12149 | return; |
12150 | ||
12151 | /* Check the latest (default) exception support info. */ | |
f17011e0 | 12152 | if (ada_has_this_exception_support (&default_exception_support_info)) |
0259addd | 12153 | { |
3eecfa55 | 12154 | data->exception_info = &default_exception_support_info; |
0259addd JB |
12155 | return; |
12156 | } | |
12157 | ||
12158 | /* Try our fallback exception suport info. */ | |
f17011e0 | 12159 | if (ada_has_this_exception_support (&exception_support_info_fallback)) |
0259addd | 12160 | { |
3eecfa55 | 12161 | data->exception_info = &exception_support_info_fallback; |
0259addd JB |
12162 | return; |
12163 | } | |
12164 | ||
12165 | /* Sometimes, it is normal for us to not be able to find the routine | |
12166 | we are looking for. This happens when the program is linked with | |
12167 | the shared version of the GNAT runtime, and the program has not been | |
12168 | started yet. Inform the user of these two possible causes if | |
12169 | applicable. */ | |
12170 | ||
ccefe4c4 | 12171 | if (ada_update_initial_language (language_unknown) != language_ada) |
0259addd JB |
12172 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); |
12173 | ||
12174 | /* If the symbol does not exist, then check that the program is | |
12175 | already started, to make sure that shared libraries have been | |
12176 | loaded. If it is not started, this may mean that the symbol is | |
12177 | in a shared library. */ | |
12178 | ||
12179 | if (ptid_get_pid (inferior_ptid) == 0) | |
12180 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
12181 | ||
12182 | /* At this point, we know that we are debugging an Ada program and | |
12183 | that the inferior has been started, but we still are not able to | |
0963b4bd | 12184 | find the run-time symbols. That can mean that we are in |
0259addd JB |
12185 | configurable run time mode, or that a-except as been optimized |
12186 | out by the linker... In any case, at this point it is not worth | |
12187 | supporting this feature. */ | |
12188 | ||
7dda8cff | 12189 | error (_("Cannot insert Ada exception catchpoints in this configuration.")); |
0259addd JB |
12190 | } |
12191 | ||
f7f9143b JB |
12192 | /* True iff FRAME is very likely to be that of a function that is |
12193 | part of the runtime system. This is all very heuristic, but is | |
12194 | intended to be used as advice as to what frames are uninteresting | |
12195 | to most users. */ | |
12196 | ||
12197 | static int | |
12198 | is_known_support_routine (struct frame_info *frame) | |
12199 | { | |
692465f1 | 12200 | enum language func_lang; |
f7f9143b | 12201 | int i; |
f35a17b5 | 12202 | const char *fullname; |
f7f9143b | 12203 | |
4ed6b5be JB |
12204 | /* If this code does not have any debugging information (no symtab), |
12205 | This cannot be any user code. */ | |
f7f9143b | 12206 | |
51abb421 | 12207 | symtab_and_line sal = find_frame_sal (frame); |
f7f9143b JB |
12208 | if (sal.symtab == NULL) |
12209 | return 1; | |
12210 | ||
4ed6b5be JB |
12211 | /* If there is a symtab, but the associated source file cannot be |
12212 | located, then assume this is not user code: Selecting a frame | |
12213 | for which we cannot display the code would not be very helpful | |
12214 | for the user. This should also take care of case such as VxWorks | |
12215 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 12216 | |
f35a17b5 JK |
12217 | fullname = symtab_to_fullname (sal.symtab); |
12218 | if (access (fullname, R_OK) != 0) | |
f7f9143b JB |
12219 | return 1; |
12220 | ||
4ed6b5be JB |
12221 | /* Check the unit filename againt the Ada runtime file naming. |
12222 | We also check the name of the objfile against the name of some | |
12223 | known system libraries that sometimes come with debugging info | |
12224 | too. */ | |
12225 | ||
f7f9143b JB |
12226 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
12227 | { | |
12228 | re_comp (known_runtime_file_name_patterns[i]); | |
f69c91ad | 12229 | if (re_exec (lbasename (sal.symtab->filename))) |
f7f9143b | 12230 | return 1; |
eb822aa6 DE |
12231 | if (SYMTAB_OBJFILE (sal.symtab) != NULL |
12232 | && re_exec (objfile_name (SYMTAB_OBJFILE (sal.symtab)))) | |
4ed6b5be | 12233 | return 1; |
f7f9143b JB |
12234 | } |
12235 | ||
4ed6b5be | 12236 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 12237 | |
c6dc63a1 TT |
12238 | gdb::unique_xmalloc_ptr<char> func_name |
12239 | = find_frame_funname (frame, &func_lang, NULL); | |
f7f9143b JB |
12240 | if (func_name == NULL) |
12241 | return 1; | |
12242 | ||
12243 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
12244 | { | |
12245 | re_comp (known_auxiliary_function_name_patterns[i]); | |
c6dc63a1 TT |
12246 | if (re_exec (func_name.get ())) |
12247 | return 1; | |
f7f9143b JB |
12248 | } |
12249 | ||
12250 | return 0; | |
12251 | } | |
12252 | ||
12253 | /* Find the first frame that contains debugging information and that is not | |
12254 | part of the Ada run-time, starting from FI and moving upward. */ | |
12255 | ||
0ef643c8 | 12256 | void |
f7f9143b JB |
12257 | ada_find_printable_frame (struct frame_info *fi) |
12258 | { | |
12259 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
12260 | { | |
12261 | if (!is_known_support_routine (fi)) | |
12262 | { | |
12263 | select_frame (fi); | |
12264 | break; | |
12265 | } | |
12266 | } | |
12267 | ||
12268 | } | |
12269 | ||
12270 | /* Assuming that the inferior just triggered an unhandled exception | |
12271 | catchpoint, return the address in inferior memory where the name | |
12272 | of the exception is stored. | |
12273 | ||
12274 | Return zero if the address could not be computed. */ | |
12275 | ||
12276 | static CORE_ADDR | |
12277 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
12278 | { |
12279 | return parse_and_eval_address ("e.full_name"); | |
12280 | } | |
12281 | ||
12282 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
12283 | should be used when the inferior uses an older version of the runtime, | |
12284 | where the exception name needs to be extracted from a specific frame | |
12285 | several frames up in the callstack. */ | |
12286 | ||
12287 | static CORE_ADDR | |
12288 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
12289 | { |
12290 | int frame_level; | |
12291 | struct frame_info *fi; | |
3eecfa55 | 12292 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
f7f9143b JB |
12293 | |
12294 | /* To determine the name of this exception, we need to select | |
12295 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
12296 | at least 3 levels up, so we simply skip the first 3 frames | |
12297 | without checking the name of their associated function. */ | |
12298 | fi = get_current_frame (); | |
12299 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
12300 | if (fi != NULL) | |
12301 | fi = get_prev_frame (fi); | |
12302 | ||
12303 | while (fi != NULL) | |
12304 | { | |
692465f1 JB |
12305 | enum language func_lang; |
12306 | ||
c6dc63a1 TT |
12307 | gdb::unique_xmalloc_ptr<char> func_name |
12308 | = find_frame_funname (fi, &func_lang, NULL); | |
55b87a52 KS |
12309 | if (func_name != NULL) |
12310 | { | |
c6dc63a1 | 12311 | if (strcmp (func_name.get (), |
55b87a52 KS |
12312 | data->exception_info->catch_exception_sym) == 0) |
12313 | break; /* We found the frame we were looking for... */ | |
12314 | fi = get_prev_frame (fi); | |
12315 | } | |
f7f9143b JB |
12316 | } |
12317 | ||
12318 | if (fi == NULL) | |
12319 | return 0; | |
12320 | ||
12321 | select_frame (fi); | |
12322 | return parse_and_eval_address ("id.full_name"); | |
12323 | } | |
12324 | ||
12325 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
12326 | (of any type), return the address in inferior memory where the name | |
12327 | of the exception is stored, if applicable. | |
12328 | ||
45db7c09 PA |
12329 | Assumes the selected frame is the current frame. |
12330 | ||
f7f9143b JB |
12331 | Return zero if the address could not be computed, or if not relevant. */ |
12332 | ||
12333 | static CORE_ADDR | |
761269c8 | 12334 | ada_exception_name_addr_1 (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12335 | struct breakpoint *b) |
12336 | { | |
3eecfa55 JB |
12337 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
12338 | ||
f7f9143b JB |
12339 | switch (ex) |
12340 | { | |
761269c8 | 12341 | case ada_catch_exception: |
f7f9143b JB |
12342 | return (parse_and_eval_address ("e.full_name")); |
12343 | break; | |
12344 | ||
761269c8 | 12345 | case ada_catch_exception_unhandled: |
3eecfa55 | 12346 | return data->exception_info->unhandled_exception_name_addr (); |
f7f9143b | 12347 | break; |
9f757bf7 XR |
12348 | |
12349 | case ada_catch_handlers: | |
12350 | return 0; /* The runtimes does not provide access to the exception | |
12351 | name. */ | |
12352 | break; | |
12353 | ||
761269c8 | 12354 | case ada_catch_assert: |
f7f9143b JB |
12355 | return 0; /* Exception name is not relevant in this case. */ |
12356 | break; | |
12357 | ||
12358 | default: | |
12359 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12360 | break; | |
12361 | } | |
12362 | ||
12363 | return 0; /* Should never be reached. */ | |
12364 | } | |
12365 | ||
e547c119 JB |
12366 | /* Assuming the inferior is stopped at an exception catchpoint, |
12367 | return the message which was associated to the exception, if | |
12368 | available. Return NULL if the message could not be retrieved. | |
12369 | ||
12370 | The caller must xfree the string after use. | |
12371 | ||
12372 | Note: The exception message can be associated to an exception | |
12373 | either through the use of the Raise_Exception function, or | |
12374 | more simply (Ada 2005 and later), via: | |
12375 | ||
12376 | raise Exception_Name with "exception message"; | |
12377 | ||
12378 | */ | |
12379 | ||
12380 | static char * | |
12381 | ada_exception_message_1 (void) | |
12382 | { | |
12383 | struct value *e_msg_val; | |
12384 | char *e_msg = NULL; | |
12385 | int e_msg_len; | |
12386 | struct cleanup *cleanups; | |
12387 | ||
12388 | /* For runtimes that support this feature, the exception message | |
12389 | is passed as an unbounded string argument called "message". */ | |
12390 | e_msg_val = parse_and_eval ("message"); | |
12391 | if (e_msg_val == NULL) | |
12392 | return NULL; /* Exception message not supported. */ | |
12393 | ||
12394 | e_msg_val = ada_coerce_to_simple_array (e_msg_val); | |
12395 | gdb_assert (e_msg_val != NULL); | |
12396 | e_msg_len = TYPE_LENGTH (value_type (e_msg_val)); | |
12397 | ||
12398 | /* If the message string is empty, then treat it as if there was | |
12399 | no exception message. */ | |
12400 | if (e_msg_len <= 0) | |
12401 | return NULL; | |
12402 | ||
12403 | e_msg = (char *) xmalloc (e_msg_len + 1); | |
12404 | cleanups = make_cleanup (xfree, e_msg); | |
12405 | read_memory_string (value_address (e_msg_val), e_msg, e_msg_len + 1); | |
12406 | e_msg[e_msg_len] = '\0'; | |
12407 | ||
12408 | discard_cleanups (cleanups); | |
12409 | return e_msg; | |
12410 | } | |
12411 | ||
12412 | /* Same as ada_exception_message_1, except that all exceptions are | |
12413 | contained here (returning NULL instead). */ | |
12414 | ||
12415 | static char * | |
12416 | ada_exception_message (void) | |
12417 | { | |
12418 | char *e_msg = NULL; /* Avoid a spurious uninitialized warning. */ | |
12419 | ||
12420 | TRY | |
12421 | { | |
12422 | e_msg = ada_exception_message_1 (); | |
12423 | } | |
12424 | CATCH (e, RETURN_MASK_ERROR) | |
12425 | { | |
12426 | e_msg = NULL; | |
12427 | } | |
12428 | END_CATCH | |
12429 | ||
12430 | return e_msg; | |
12431 | } | |
12432 | ||
f7f9143b JB |
12433 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains |
12434 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
12435 | When an error is intercepted, a warning with the error message is printed, | |
12436 | and zero is returned. */ | |
12437 | ||
12438 | static CORE_ADDR | |
761269c8 | 12439 | ada_exception_name_addr (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12440 | struct breakpoint *b) |
12441 | { | |
f7f9143b JB |
12442 | CORE_ADDR result = 0; |
12443 | ||
492d29ea | 12444 | TRY |
f7f9143b JB |
12445 | { |
12446 | result = ada_exception_name_addr_1 (ex, b); | |
12447 | } | |
12448 | ||
492d29ea | 12449 | CATCH (e, RETURN_MASK_ERROR) |
f7f9143b JB |
12450 | { |
12451 | warning (_("failed to get exception name: %s"), e.message); | |
12452 | return 0; | |
12453 | } | |
492d29ea | 12454 | END_CATCH |
f7f9143b JB |
12455 | |
12456 | return result; | |
12457 | } | |
12458 | ||
9f757bf7 XR |
12459 | static char *ada_exception_catchpoint_cond_string |
12460 | (const char *excep_string, | |
12461 | enum ada_exception_catchpoint_kind ex); | |
28010a5d PA |
12462 | |
12463 | /* Ada catchpoints. | |
12464 | ||
12465 | In the case of catchpoints on Ada exceptions, the catchpoint will | |
12466 | stop the target on every exception the program throws. When a user | |
12467 | specifies the name of a specific exception, we translate this | |
12468 | request into a condition expression (in text form), and then parse | |
12469 | it into an expression stored in each of the catchpoint's locations. | |
12470 | We then use this condition to check whether the exception that was | |
12471 | raised is the one the user is interested in. If not, then the | |
12472 | target is resumed again. We store the name of the requested | |
12473 | exception, in order to be able to re-set the condition expression | |
12474 | when symbols change. */ | |
12475 | ||
12476 | /* An instance of this type is used to represent an Ada catchpoint | |
5625a286 | 12477 | breakpoint location. */ |
28010a5d | 12478 | |
5625a286 | 12479 | class ada_catchpoint_location : public bp_location |
28010a5d | 12480 | { |
5625a286 PA |
12481 | public: |
12482 | ada_catchpoint_location (const bp_location_ops *ops, breakpoint *owner) | |
12483 | : bp_location (ops, owner) | |
12484 | {} | |
28010a5d PA |
12485 | |
12486 | /* The condition that checks whether the exception that was raised | |
12487 | is the specific exception the user specified on catchpoint | |
12488 | creation. */ | |
4d01a485 | 12489 | expression_up excep_cond_expr; |
28010a5d PA |
12490 | }; |
12491 | ||
12492 | /* Implement the DTOR method in the bp_location_ops structure for all | |
12493 | Ada exception catchpoint kinds. */ | |
12494 | ||
12495 | static void | |
12496 | ada_catchpoint_location_dtor (struct bp_location *bl) | |
12497 | { | |
12498 | struct ada_catchpoint_location *al = (struct ada_catchpoint_location *) bl; | |
12499 | ||
4d01a485 | 12500 | al->excep_cond_expr.reset (); |
28010a5d PA |
12501 | } |
12502 | ||
12503 | /* The vtable to be used in Ada catchpoint locations. */ | |
12504 | ||
12505 | static const struct bp_location_ops ada_catchpoint_location_ops = | |
12506 | { | |
12507 | ada_catchpoint_location_dtor | |
12508 | }; | |
12509 | ||
c1fc2657 | 12510 | /* An instance of this type is used to represent an Ada catchpoint. */ |
28010a5d | 12511 | |
c1fc2657 | 12512 | struct ada_catchpoint : public breakpoint |
28010a5d | 12513 | { |
c1fc2657 | 12514 | ~ada_catchpoint () override; |
28010a5d PA |
12515 | |
12516 | /* The name of the specific exception the user specified. */ | |
12517 | char *excep_string; | |
12518 | }; | |
12519 | ||
12520 | /* Parse the exception condition string in the context of each of the | |
12521 | catchpoint's locations, and store them for later evaluation. */ | |
12522 | ||
12523 | static void | |
9f757bf7 XR |
12524 | create_excep_cond_exprs (struct ada_catchpoint *c, |
12525 | enum ada_exception_catchpoint_kind ex) | |
28010a5d PA |
12526 | { |
12527 | struct cleanup *old_chain; | |
12528 | struct bp_location *bl; | |
12529 | char *cond_string; | |
12530 | ||
12531 | /* Nothing to do if there's no specific exception to catch. */ | |
12532 | if (c->excep_string == NULL) | |
12533 | return; | |
12534 | ||
12535 | /* Same if there are no locations... */ | |
c1fc2657 | 12536 | if (c->loc == NULL) |
28010a5d PA |
12537 | return; |
12538 | ||
12539 | /* Compute the condition expression in text form, from the specific | |
12540 | expection we want to catch. */ | |
9f757bf7 | 12541 | cond_string = ada_exception_catchpoint_cond_string (c->excep_string, ex); |
28010a5d PA |
12542 | old_chain = make_cleanup (xfree, cond_string); |
12543 | ||
12544 | /* Iterate over all the catchpoint's locations, and parse an | |
12545 | expression for each. */ | |
c1fc2657 | 12546 | for (bl = c->loc; bl != NULL; bl = bl->next) |
28010a5d PA |
12547 | { |
12548 | struct ada_catchpoint_location *ada_loc | |
12549 | = (struct ada_catchpoint_location *) bl; | |
4d01a485 | 12550 | expression_up exp; |
28010a5d PA |
12551 | |
12552 | if (!bl->shlib_disabled) | |
12553 | { | |
bbc13ae3 | 12554 | const char *s; |
28010a5d PA |
12555 | |
12556 | s = cond_string; | |
492d29ea | 12557 | TRY |
28010a5d | 12558 | { |
036e657b JB |
12559 | exp = parse_exp_1 (&s, bl->address, |
12560 | block_for_pc (bl->address), | |
12561 | 0); | |
28010a5d | 12562 | } |
492d29ea | 12563 | CATCH (e, RETURN_MASK_ERROR) |
849f2b52 JB |
12564 | { |
12565 | warning (_("failed to reevaluate internal exception condition " | |
12566 | "for catchpoint %d: %s"), | |
c1fc2657 | 12567 | c->number, e.message); |
849f2b52 | 12568 | } |
492d29ea | 12569 | END_CATCH |
28010a5d PA |
12570 | } |
12571 | ||
b22e99fd | 12572 | ada_loc->excep_cond_expr = std::move (exp); |
28010a5d PA |
12573 | } |
12574 | ||
12575 | do_cleanups (old_chain); | |
12576 | } | |
12577 | ||
c1fc2657 | 12578 | /* ada_catchpoint destructor. */ |
28010a5d | 12579 | |
c1fc2657 | 12580 | ada_catchpoint::~ada_catchpoint () |
28010a5d | 12581 | { |
c1fc2657 | 12582 | xfree (this->excep_string); |
28010a5d PA |
12583 | } |
12584 | ||
12585 | /* Implement the ALLOCATE_LOCATION method in the breakpoint_ops | |
12586 | structure for all exception catchpoint kinds. */ | |
12587 | ||
12588 | static struct bp_location * | |
761269c8 | 12589 | allocate_location_exception (enum ada_exception_catchpoint_kind ex, |
28010a5d PA |
12590 | struct breakpoint *self) |
12591 | { | |
5625a286 | 12592 | return new ada_catchpoint_location (&ada_catchpoint_location_ops, self); |
28010a5d PA |
12593 | } |
12594 | ||
12595 | /* Implement the RE_SET method in the breakpoint_ops structure for all | |
12596 | exception catchpoint kinds. */ | |
12597 | ||
12598 | static void | |
761269c8 | 12599 | re_set_exception (enum ada_exception_catchpoint_kind ex, struct breakpoint *b) |
28010a5d PA |
12600 | { |
12601 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
12602 | ||
12603 | /* Call the base class's method. This updates the catchpoint's | |
12604 | locations. */ | |
2060206e | 12605 | bkpt_breakpoint_ops.re_set (b); |
28010a5d PA |
12606 | |
12607 | /* Reparse the exception conditional expressions. One for each | |
12608 | location. */ | |
9f757bf7 | 12609 | create_excep_cond_exprs (c, ex); |
28010a5d PA |
12610 | } |
12611 | ||
12612 | /* Returns true if we should stop for this breakpoint hit. If the | |
12613 | user specified a specific exception, we only want to cause a stop | |
12614 | if the program thrown that exception. */ | |
12615 | ||
12616 | static int | |
12617 | should_stop_exception (const struct bp_location *bl) | |
12618 | { | |
12619 | struct ada_catchpoint *c = (struct ada_catchpoint *) bl->owner; | |
12620 | const struct ada_catchpoint_location *ada_loc | |
12621 | = (const struct ada_catchpoint_location *) bl; | |
28010a5d PA |
12622 | int stop; |
12623 | ||
12624 | /* With no specific exception, should always stop. */ | |
12625 | if (c->excep_string == NULL) | |
12626 | return 1; | |
12627 | ||
12628 | if (ada_loc->excep_cond_expr == NULL) | |
12629 | { | |
12630 | /* We will have a NULL expression if back when we were creating | |
12631 | the expressions, this location's had failed to parse. */ | |
12632 | return 1; | |
12633 | } | |
12634 | ||
12635 | stop = 1; | |
492d29ea | 12636 | TRY |
28010a5d PA |
12637 | { |
12638 | struct value *mark; | |
12639 | ||
12640 | mark = value_mark (); | |
4d01a485 | 12641 | stop = value_true (evaluate_expression (ada_loc->excep_cond_expr.get ())); |
28010a5d PA |
12642 | value_free_to_mark (mark); |
12643 | } | |
492d29ea PA |
12644 | CATCH (ex, RETURN_MASK_ALL) |
12645 | { | |
12646 | exception_fprintf (gdb_stderr, ex, | |
12647 | _("Error in testing exception condition:\n")); | |
12648 | } | |
12649 | END_CATCH | |
12650 | ||
28010a5d PA |
12651 | return stop; |
12652 | } | |
12653 | ||
12654 | /* Implement the CHECK_STATUS method in the breakpoint_ops structure | |
12655 | for all exception catchpoint kinds. */ | |
12656 | ||
12657 | static void | |
761269c8 | 12658 | check_status_exception (enum ada_exception_catchpoint_kind ex, bpstat bs) |
28010a5d PA |
12659 | { |
12660 | bs->stop = should_stop_exception (bs->bp_location_at); | |
12661 | } | |
12662 | ||
f7f9143b JB |
12663 | /* Implement the PRINT_IT method in the breakpoint_ops structure |
12664 | for all exception catchpoint kinds. */ | |
12665 | ||
12666 | static enum print_stop_action | |
761269c8 | 12667 | print_it_exception (enum ada_exception_catchpoint_kind ex, bpstat bs) |
f7f9143b | 12668 | { |
79a45e25 | 12669 | struct ui_out *uiout = current_uiout; |
348d480f | 12670 | struct breakpoint *b = bs->breakpoint_at; |
e547c119 | 12671 | char *exception_message; |
348d480f | 12672 | |
956a9fb9 | 12673 | annotate_catchpoint (b->number); |
f7f9143b | 12674 | |
112e8700 | 12675 | if (uiout->is_mi_like_p ()) |
f7f9143b | 12676 | { |
112e8700 | 12677 | uiout->field_string ("reason", |
956a9fb9 | 12678 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12679 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f7f9143b JB |
12680 | } |
12681 | ||
112e8700 SM |
12682 | uiout->text (b->disposition == disp_del |
12683 | ? "\nTemporary catchpoint " : "\nCatchpoint "); | |
12684 | uiout->field_int ("bkptno", b->number); | |
12685 | uiout->text (", "); | |
f7f9143b | 12686 | |
45db7c09 PA |
12687 | /* ada_exception_name_addr relies on the selected frame being the |
12688 | current frame. Need to do this here because this function may be | |
12689 | called more than once when printing a stop, and below, we'll | |
12690 | select the first frame past the Ada run-time (see | |
12691 | ada_find_printable_frame). */ | |
12692 | select_frame (get_current_frame ()); | |
12693 | ||
f7f9143b JB |
12694 | switch (ex) |
12695 | { | |
761269c8 JB |
12696 | case ada_catch_exception: |
12697 | case ada_catch_exception_unhandled: | |
9f757bf7 | 12698 | case ada_catch_handlers: |
956a9fb9 JB |
12699 | { |
12700 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
12701 | char exception_name[256]; | |
12702 | ||
12703 | if (addr != 0) | |
12704 | { | |
c714b426 PA |
12705 | read_memory (addr, (gdb_byte *) exception_name, |
12706 | sizeof (exception_name) - 1); | |
956a9fb9 JB |
12707 | exception_name [sizeof (exception_name) - 1] = '\0'; |
12708 | } | |
12709 | else | |
12710 | { | |
12711 | /* For some reason, we were unable to read the exception | |
12712 | name. This could happen if the Runtime was compiled | |
12713 | without debugging info, for instance. In that case, | |
12714 | just replace the exception name by the generic string | |
12715 | "exception" - it will read as "an exception" in the | |
12716 | notification we are about to print. */ | |
967cff16 | 12717 | memcpy (exception_name, "exception", sizeof ("exception")); |
956a9fb9 JB |
12718 | } |
12719 | /* In the case of unhandled exception breakpoints, we print | |
12720 | the exception name as "unhandled EXCEPTION_NAME", to make | |
12721 | it clearer to the user which kind of catchpoint just got | |
12722 | hit. We used ui_out_text to make sure that this extra | |
12723 | info does not pollute the exception name in the MI case. */ | |
761269c8 | 12724 | if (ex == ada_catch_exception_unhandled) |
112e8700 SM |
12725 | uiout->text ("unhandled "); |
12726 | uiout->field_string ("exception-name", exception_name); | |
956a9fb9 JB |
12727 | } |
12728 | break; | |
761269c8 | 12729 | case ada_catch_assert: |
956a9fb9 JB |
12730 | /* In this case, the name of the exception is not really |
12731 | important. Just print "failed assertion" to make it clearer | |
12732 | that his program just hit an assertion-failure catchpoint. | |
12733 | We used ui_out_text because this info does not belong in | |
12734 | the MI output. */ | |
112e8700 | 12735 | uiout->text ("failed assertion"); |
956a9fb9 | 12736 | break; |
f7f9143b | 12737 | } |
e547c119 JB |
12738 | |
12739 | exception_message = ada_exception_message (); | |
12740 | if (exception_message != NULL) | |
12741 | { | |
12742 | struct cleanup *cleanups = make_cleanup (xfree, exception_message); | |
12743 | ||
12744 | uiout->text (" ("); | |
12745 | uiout->field_string ("exception-message", exception_message); | |
12746 | uiout->text (")"); | |
12747 | ||
12748 | do_cleanups (cleanups); | |
12749 | } | |
12750 | ||
112e8700 | 12751 | uiout->text (" at "); |
956a9fb9 | 12752 | ada_find_printable_frame (get_current_frame ()); |
f7f9143b JB |
12753 | |
12754 | return PRINT_SRC_AND_LOC; | |
12755 | } | |
12756 | ||
12757 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
12758 | for all exception catchpoint kinds. */ | |
12759 | ||
12760 | static void | |
761269c8 | 12761 | print_one_exception (enum ada_exception_catchpoint_kind ex, |
a6d9a66e | 12762 | struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12763 | { |
79a45e25 | 12764 | struct ui_out *uiout = current_uiout; |
28010a5d | 12765 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45b7d TT |
12766 | struct value_print_options opts; |
12767 | ||
12768 | get_user_print_options (&opts); | |
12769 | if (opts.addressprint) | |
f7f9143b JB |
12770 | { |
12771 | annotate_field (4); | |
112e8700 | 12772 | uiout->field_core_addr ("addr", b->loc->gdbarch, b->loc->address); |
f7f9143b JB |
12773 | } |
12774 | ||
12775 | annotate_field (5); | |
a6d9a66e | 12776 | *last_loc = b->loc; |
f7f9143b JB |
12777 | switch (ex) |
12778 | { | |
761269c8 | 12779 | case ada_catch_exception: |
28010a5d | 12780 | if (c->excep_string != NULL) |
f7f9143b | 12781 | { |
28010a5d PA |
12782 | char *msg = xstrprintf (_("`%s' Ada exception"), c->excep_string); |
12783 | ||
112e8700 | 12784 | uiout->field_string ("what", msg); |
f7f9143b JB |
12785 | xfree (msg); |
12786 | } | |
12787 | else | |
112e8700 | 12788 | uiout->field_string ("what", "all Ada exceptions"); |
f7f9143b JB |
12789 | |
12790 | break; | |
12791 | ||
761269c8 | 12792 | case ada_catch_exception_unhandled: |
112e8700 | 12793 | uiout->field_string ("what", "unhandled Ada exceptions"); |
f7f9143b JB |
12794 | break; |
12795 | ||
9f757bf7 XR |
12796 | case ada_catch_handlers: |
12797 | if (c->excep_string != NULL) | |
12798 | { | |
12799 | uiout->field_fmt ("what", | |
12800 | _("`%s' Ada exception handlers"), | |
12801 | c->excep_string); | |
12802 | } | |
12803 | else | |
12804 | uiout->field_string ("what", "all Ada exceptions handlers"); | |
12805 | break; | |
12806 | ||
761269c8 | 12807 | case ada_catch_assert: |
112e8700 | 12808 | uiout->field_string ("what", "failed Ada assertions"); |
f7f9143b JB |
12809 | break; |
12810 | ||
12811 | default: | |
12812 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12813 | break; | |
12814 | } | |
12815 | } | |
12816 | ||
12817 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
12818 | for all exception catchpoint kinds. */ | |
12819 | ||
12820 | static void | |
761269c8 | 12821 | print_mention_exception (enum ada_exception_catchpoint_kind ex, |
f7f9143b JB |
12822 | struct breakpoint *b) |
12823 | { | |
28010a5d | 12824 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45e25 | 12825 | struct ui_out *uiout = current_uiout; |
28010a5d | 12826 | |
112e8700 | 12827 | uiout->text (b->disposition == disp_del ? _("Temporary catchpoint ") |
00eb2c4a | 12828 | : _("Catchpoint ")); |
112e8700 SM |
12829 | uiout->field_int ("bkptno", b->number); |
12830 | uiout->text (": "); | |
00eb2c4a | 12831 | |
f7f9143b JB |
12832 | switch (ex) |
12833 | { | |
761269c8 | 12834 | case ada_catch_exception: |
28010a5d | 12835 | if (c->excep_string != NULL) |
00eb2c4a JB |
12836 | { |
12837 | char *info = xstrprintf (_("`%s' Ada exception"), c->excep_string); | |
12838 | struct cleanup *old_chain = make_cleanup (xfree, info); | |
12839 | ||
112e8700 | 12840 | uiout->text (info); |
00eb2c4a JB |
12841 | do_cleanups (old_chain); |
12842 | } | |
f7f9143b | 12843 | else |
112e8700 | 12844 | uiout->text (_("all Ada exceptions")); |
f7f9143b JB |
12845 | break; |
12846 | ||
761269c8 | 12847 | case ada_catch_exception_unhandled: |
112e8700 | 12848 | uiout->text (_("unhandled Ada exceptions")); |
f7f9143b | 12849 | break; |
9f757bf7 XR |
12850 | |
12851 | case ada_catch_handlers: | |
12852 | if (c->excep_string != NULL) | |
12853 | { | |
12854 | std::string info | |
12855 | = string_printf (_("`%s' Ada exception handlers"), | |
12856 | c->excep_string); | |
12857 | uiout->text (info.c_str ()); | |
12858 | } | |
12859 | else | |
12860 | uiout->text (_("all Ada exceptions handlers")); | |
12861 | break; | |
12862 | ||
761269c8 | 12863 | case ada_catch_assert: |
112e8700 | 12864 | uiout->text (_("failed Ada assertions")); |
f7f9143b JB |
12865 | break; |
12866 | ||
12867 | default: | |
12868 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12869 | break; | |
12870 | } | |
12871 | } | |
12872 | ||
6149aea9 PA |
12873 | /* Implement the PRINT_RECREATE method in the breakpoint_ops structure |
12874 | for all exception catchpoint kinds. */ | |
12875 | ||
12876 | static void | |
761269c8 | 12877 | print_recreate_exception (enum ada_exception_catchpoint_kind ex, |
6149aea9 PA |
12878 | struct breakpoint *b, struct ui_file *fp) |
12879 | { | |
28010a5d PA |
12880 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
12881 | ||
6149aea9 PA |
12882 | switch (ex) |
12883 | { | |
761269c8 | 12884 | case ada_catch_exception: |
6149aea9 | 12885 | fprintf_filtered (fp, "catch exception"); |
28010a5d PA |
12886 | if (c->excep_string != NULL) |
12887 | fprintf_filtered (fp, " %s", c->excep_string); | |
6149aea9 PA |
12888 | break; |
12889 | ||
761269c8 | 12890 | case ada_catch_exception_unhandled: |
78076abc | 12891 | fprintf_filtered (fp, "catch exception unhandled"); |
6149aea9 PA |
12892 | break; |
12893 | ||
9f757bf7 XR |
12894 | case ada_catch_handlers: |
12895 | fprintf_filtered (fp, "catch handlers"); | |
12896 | break; | |
12897 | ||
761269c8 | 12898 | case ada_catch_assert: |
6149aea9 PA |
12899 | fprintf_filtered (fp, "catch assert"); |
12900 | break; | |
12901 | ||
12902 | default: | |
12903 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12904 | } | |
d9b3f62e | 12905 | print_recreate_thread (b, fp); |
6149aea9 PA |
12906 | } |
12907 | ||
f7f9143b JB |
12908 | /* Virtual table for "catch exception" breakpoints. */ |
12909 | ||
28010a5d PA |
12910 | static struct bp_location * |
12911 | allocate_location_catch_exception (struct breakpoint *self) | |
12912 | { | |
761269c8 | 12913 | return allocate_location_exception (ada_catch_exception, self); |
28010a5d PA |
12914 | } |
12915 | ||
12916 | static void | |
12917 | re_set_catch_exception (struct breakpoint *b) | |
12918 | { | |
761269c8 | 12919 | re_set_exception (ada_catch_exception, b); |
28010a5d PA |
12920 | } |
12921 | ||
12922 | static void | |
12923 | check_status_catch_exception (bpstat bs) | |
12924 | { | |
761269c8 | 12925 | check_status_exception (ada_catch_exception, bs); |
28010a5d PA |
12926 | } |
12927 | ||
f7f9143b | 12928 | static enum print_stop_action |
348d480f | 12929 | print_it_catch_exception (bpstat bs) |
f7f9143b | 12930 | { |
761269c8 | 12931 | return print_it_exception (ada_catch_exception, bs); |
f7f9143b JB |
12932 | } |
12933 | ||
12934 | static void | |
a6d9a66e | 12935 | print_one_catch_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12936 | { |
761269c8 | 12937 | print_one_exception (ada_catch_exception, b, last_loc); |
f7f9143b JB |
12938 | } |
12939 | ||
12940 | static void | |
12941 | print_mention_catch_exception (struct breakpoint *b) | |
12942 | { | |
761269c8 | 12943 | print_mention_exception (ada_catch_exception, b); |
f7f9143b JB |
12944 | } |
12945 | ||
6149aea9 PA |
12946 | static void |
12947 | print_recreate_catch_exception (struct breakpoint *b, struct ui_file *fp) | |
12948 | { | |
761269c8 | 12949 | print_recreate_exception (ada_catch_exception, b, fp); |
6149aea9 PA |
12950 | } |
12951 | ||
2060206e | 12952 | static struct breakpoint_ops catch_exception_breakpoint_ops; |
f7f9143b JB |
12953 | |
12954 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
12955 | ||
28010a5d PA |
12956 | static struct bp_location * |
12957 | allocate_location_catch_exception_unhandled (struct breakpoint *self) | |
12958 | { | |
761269c8 | 12959 | return allocate_location_exception (ada_catch_exception_unhandled, self); |
28010a5d PA |
12960 | } |
12961 | ||
12962 | static void | |
12963 | re_set_catch_exception_unhandled (struct breakpoint *b) | |
12964 | { | |
761269c8 | 12965 | re_set_exception (ada_catch_exception_unhandled, b); |
28010a5d PA |
12966 | } |
12967 | ||
12968 | static void | |
12969 | check_status_catch_exception_unhandled (bpstat bs) | |
12970 | { | |
761269c8 | 12971 | check_status_exception (ada_catch_exception_unhandled, bs); |
28010a5d PA |
12972 | } |
12973 | ||
f7f9143b | 12974 | static enum print_stop_action |
348d480f | 12975 | print_it_catch_exception_unhandled (bpstat bs) |
f7f9143b | 12976 | { |
761269c8 | 12977 | return print_it_exception (ada_catch_exception_unhandled, bs); |
f7f9143b JB |
12978 | } |
12979 | ||
12980 | static void | |
a6d9a66e UW |
12981 | print_one_catch_exception_unhandled (struct breakpoint *b, |
12982 | struct bp_location **last_loc) | |
f7f9143b | 12983 | { |
761269c8 | 12984 | print_one_exception (ada_catch_exception_unhandled, b, last_loc); |
f7f9143b JB |
12985 | } |
12986 | ||
12987 | static void | |
12988 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
12989 | { | |
761269c8 | 12990 | print_mention_exception (ada_catch_exception_unhandled, b); |
f7f9143b JB |
12991 | } |
12992 | ||
6149aea9 PA |
12993 | static void |
12994 | print_recreate_catch_exception_unhandled (struct breakpoint *b, | |
12995 | struct ui_file *fp) | |
12996 | { | |
761269c8 | 12997 | print_recreate_exception (ada_catch_exception_unhandled, b, fp); |
6149aea9 PA |
12998 | } |
12999 | ||
2060206e | 13000 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops; |
f7f9143b JB |
13001 | |
13002 | /* Virtual table for "catch assert" breakpoints. */ | |
13003 | ||
28010a5d PA |
13004 | static struct bp_location * |
13005 | allocate_location_catch_assert (struct breakpoint *self) | |
13006 | { | |
761269c8 | 13007 | return allocate_location_exception (ada_catch_assert, self); |
28010a5d PA |
13008 | } |
13009 | ||
13010 | static void | |
13011 | re_set_catch_assert (struct breakpoint *b) | |
13012 | { | |
761269c8 | 13013 | re_set_exception (ada_catch_assert, b); |
28010a5d PA |
13014 | } |
13015 | ||
13016 | static void | |
13017 | check_status_catch_assert (bpstat bs) | |
13018 | { | |
761269c8 | 13019 | check_status_exception (ada_catch_assert, bs); |
28010a5d PA |
13020 | } |
13021 | ||
f7f9143b | 13022 | static enum print_stop_action |
348d480f | 13023 | print_it_catch_assert (bpstat bs) |
f7f9143b | 13024 | { |
761269c8 | 13025 | return print_it_exception (ada_catch_assert, bs); |
f7f9143b JB |
13026 | } |
13027 | ||
13028 | static void | |
a6d9a66e | 13029 | print_one_catch_assert (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 13030 | { |
761269c8 | 13031 | print_one_exception (ada_catch_assert, b, last_loc); |
f7f9143b JB |
13032 | } |
13033 | ||
13034 | static void | |
13035 | print_mention_catch_assert (struct breakpoint *b) | |
13036 | { | |
761269c8 | 13037 | print_mention_exception (ada_catch_assert, b); |
f7f9143b JB |
13038 | } |
13039 | ||
6149aea9 PA |
13040 | static void |
13041 | print_recreate_catch_assert (struct breakpoint *b, struct ui_file *fp) | |
13042 | { | |
761269c8 | 13043 | print_recreate_exception (ada_catch_assert, b, fp); |
6149aea9 PA |
13044 | } |
13045 | ||
2060206e | 13046 | static struct breakpoint_ops catch_assert_breakpoint_ops; |
f7f9143b | 13047 | |
9f757bf7 XR |
13048 | /* Virtual table for "catch handlers" breakpoints. */ |
13049 | ||
13050 | static struct bp_location * | |
13051 | allocate_location_catch_handlers (struct breakpoint *self) | |
13052 | { | |
13053 | return allocate_location_exception (ada_catch_handlers, self); | |
13054 | } | |
13055 | ||
13056 | static void | |
13057 | re_set_catch_handlers (struct breakpoint *b) | |
13058 | { | |
13059 | re_set_exception (ada_catch_handlers, b); | |
13060 | } | |
13061 | ||
13062 | static void | |
13063 | check_status_catch_handlers (bpstat bs) | |
13064 | { | |
13065 | check_status_exception (ada_catch_handlers, bs); | |
13066 | } | |
13067 | ||
13068 | static enum print_stop_action | |
13069 | print_it_catch_handlers (bpstat bs) | |
13070 | { | |
13071 | return print_it_exception (ada_catch_handlers, bs); | |
13072 | } | |
13073 | ||
13074 | static void | |
13075 | print_one_catch_handlers (struct breakpoint *b, | |
13076 | struct bp_location **last_loc) | |
13077 | { | |
13078 | print_one_exception (ada_catch_handlers, b, last_loc); | |
13079 | } | |
13080 | ||
13081 | static void | |
13082 | print_mention_catch_handlers (struct breakpoint *b) | |
13083 | { | |
13084 | print_mention_exception (ada_catch_handlers, b); | |
13085 | } | |
13086 | ||
13087 | static void | |
13088 | print_recreate_catch_handlers (struct breakpoint *b, | |
13089 | struct ui_file *fp) | |
13090 | { | |
13091 | print_recreate_exception (ada_catch_handlers, b, fp); | |
13092 | } | |
13093 | ||
13094 | static struct breakpoint_ops catch_handlers_breakpoint_ops; | |
13095 | ||
f7f9143b JB |
13096 | /* Return a newly allocated copy of the first space-separated token |
13097 | in ARGSP, and then adjust ARGSP to point immediately after that | |
13098 | token. | |
13099 | ||
13100 | Return NULL if ARGPS does not contain any more tokens. */ | |
13101 | ||
13102 | static char * | |
a121b7c1 | 13103 | ada_get_next_arg (const char **argsp) |
f7f9143b | 13104 | { |
a121b7c1 PA |
13105 | const char *args = *argsp; |
13106 | const char *end; | |
f7f9143b JB |
13107 | char *result; |
13108 | ||
f1735a53 | 13109 | args = skip_spaces (args); |
f7f9143b JB |
13110 | if (args[0] == '\0') |
13111 | return NULL; /* No more arguments. */ | |
13112 | ||
13113 | /* Find the end of the current argument. */ | |
13114 | ||
f1735a53 | 13115 | end = skip_to_space (args); |
f7f9143b JB |
13116 | |
13117 | /* Adjust ARGSP to point to the start of the next argument. */ | |
13118 | ||
13119 | *argsp = end; | |
13120 | ||
13121 | /* Make a copy of the current argument and return it. */ | |
13122 | ||
224c3ddb | 13123 | result = (char *) xmalloc (end - args + 1); |
f7f9143b JB |
13124 | strncpy (result, args, end - args); |
13125 | result[end - args] = '\0'; | |
13126 | ||
13127 | return result; | |
13128 | } | |
13129 | ||
13130 | /* Split the arguments specified in a "catch exception" command. | |
13131 | Set EX to the appropriate catchpoint type. | |
28010a5d | 13132 | Set EXCEP_STRING to the name of the specific exception if |
5845583d | 13133 | specified by the user. |
9f757bf7 XR |
13134 | IS_CATCH_HANDLERS_CMD: True if the arguments are for a |
13135 | "catch handlers" command. False otherwise. | |
5845583d JB |
13136 | If a condition is found at the end of the arguments, the condition |
13137 | expression is stored in COND_STRING (memory must be deallocated | |
13138 | after use). Otherwise COND_STRING is set to NULL. */ | |
f7f9143b JB |
13139 | |
13140 | static void | |
a121b7c1 | 13141 | catch_ada_exception_command_split (const char *args, |
9f757bf7 | 13142 | bool is_catch_handlers_cmd, |
761269c8 | 13143 | enum ada_exception_catchpoint_kind *ex, |
5845583d JB |
13144 | char **excep_string, |
13145 | char **cond_string) | |
f7f9143b JB |
13146 | { |
13147 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
13148 | char *exception_name; | |
5845583d | 13149 | char *cond = NULL; |
f7f9143b JB |
13150 | |
13151 | exception_name = ada_get_next_arg (&args); | |
5845583d JB |
13152 | if (exception_name != NULL && strcmp (exception_name, "if") == 0) |
13153 | { | |
13154 | /* This is not an exception name; this is the start of a condition | |
13155 | expression for a catchpoint on all exceptions. So, "un-get" | |
13156 | this token, and set exception_name to NULL. */ | |
13157 | xfree (exception_name); | |
13158 | exception_name = NULL; | |
13159 | args -= 2; | |
13160 | } | |
f7f9143b JB |
13161 | make_cleanup (xfree, exception_name); |
13162 | ||
5845583d | 13163 | /* Check to see if we have a condition. */ |
f7f9143b | 13164 | |
f1735a53 | 13165 | args = skip_spaces (args); |
61012eef | 13166 | if (startswith (args, "if") |
5845583d JB |
13167 | && (isspace (args[2]) || args[2] == '\0')) |
13168 | { | |
13169 | args += 2; | |
f1735a53 | 13170 | args = skip_spaces (args); |
5845583d JB |
13171 | |
13172 | if (args[0] == '\0') | |
13173 | error (_("Condition missing after `if' keyword")); | |
13174 | cond = xstrdup (args); | |
13175 | make_cleanup (xfree, cond); | |
13176 | ||
13177 | args += strlen (args); | |
13178 | } | |
13179 | ||
13180 | /* Check that we do not have any more arguments. Anything else | |
13181 | is unexpected. */ | |
f7f9143b JB |
13182 | |
13183 | if (args[0] != '\0') | |
13184 | error (_("Junk at end of expression")); | |
13185 | ||
13186 | discard_cleanups (old_chain); | |
13187 | ||
9f757bf7 XR |
13188 | if (is_catch_handlers_cmd) |
13189 | { | |
13190 | /* Catch handling of exceptions. */ | |
13191 | *ex = ada_catch_handlers; | |
13192 | *excep_string = exception_name; | |
13193 | } | |
13194 | else if (exception_name == NULL) | |
f7f9143b JB |
13195 | { |
13196 | /* Catch all exceptions. */ | |
761269c8 | 13197 | *ex = ada_catch_exception; |
28010a5d | 13198 | *excep_string = NULL; |
f7f9143b JB |
13199 | } |
13200 | else if (strcmp (exception_name, "unhandled") == 0) | |
13201 | { | |
13202 | /* Catch unhandled exceptions. */ | |
761269c8 | 13203 | *ex = ada_catch_exception_unhandled; |
28010a5d | 13204 | *excep_string = NULL; |
f7f9143b JB |
13205 | } |
13206 | else | |
13207 | { | |
13208 | /* Catch a specific exception. */ | |
761269c8 | 13209 | *ex = ada_catch_exception; |
28010a5d | 13210 | *excep_string = exception_name; |
f7f9143b | 13211 | } |
5845583d | 13212 | *cond_string = cond; |
f7f9143b JB |
13213 | } |
13214 | ||
13215 | /* Return the name of the symbol on which we should break in order to | |
13216 | implement a catchpoint of the EX kind. */ | |
13217 | ||
13218 | static const char * | |
761269c8 | 13219 | ada_exception_sym_name (enum ada_exception_catchpoint_kind ex) |
f7f9143b | 13220 | { |
3eecfa55 JB |
13221 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
13222 | ||
13223 | gdb_assert (data->exception_info != NULL); | |
0259addd | 13224 | |
f7f9143b JB |
13225 | switch (ex) |
13226 | { | |
761269c8 | 13227 | case ada_catch_exception: |
3eecfa55 | 13228 | return (data->exception_info->catch_exception_sym); |
f7f9143b | 13229 | break; |
761269c8 | 13230 | case ada_catch_exception_unhandled: |
3eecfa55 | 13231 | return (data->exception_info->catch_exception_unhandled_sym); |
f7f9143b | 13232 | break; |
761269c8 | 13233 | case ada_catch_assert: |
3eecfa55 | 13234 | return (data->exception_info->catch_assert_sym); |
f7f9143b | 13235 | break; |
9f757bf7 XR |
13236 | case ada_catch_handlers: |
13237 | return (data->exception_info->catch_handlers_sym); | |
13238 | break; | |
f7f9143b JB |
13239 | default: |
13240 | internal_error (__FILE__, __LINE__, | |
13241 | _("unexpected catchpoint kind (%d)"), ex); | |
13242 | } | |
13243 | } | |
13244 | ||
13245 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
13246 | of the EX kind. */ | |
13247 | ||
c0a91b2b | 13248 | static const struct breakpoint_ops * |
761269c8 | 13249 | ada_exception_breakpoint_ops (enum ada_exception_catchpoint_kind ex) |
f7f9143b JB |
13250 | { |
13251 | switch (ex) | |
13252 | { | |
761269c8 | 13253 | case ada_catch_exception: |
f7f9143b JB |
13254 | return (&catch_exception_breakpoint_ops); |
13255 | break; | |
761269c8 | 13256 | case ada_catch_exception_unhandled: |
f7f9143b JB |
13257 | return (&catch_exception_unhandled_breakpoint_ops); |
13258 | break; | |
761269c8 | 13259 | case ada_catch_assert: |
f7f9143b JB |
13260 | return (&catch_assert_breakpoint_ops); |
13261 | break; | |
9f757bf7 XR |
13262 | case ada_catch_handlers: |
13263 | return (&catch_handlers_breakpoint_ops); | |
13264 | break; | |
f7f9143b JB |
13265 | default: |
13266 | internal_error (__FILE__, __LINE__, | |
13267 | _("unexpected catchpoint kind (%d)"), ex); | |
13268 | } | |
13269 | } | |
13270 | ||
13271 | /* Return the condition that will be used to match the current exception | |
13272 | being raised with the exception that the user wants to catch. This | |
13273 | assumes that this condition is used when the inferior just triggered | |
13274 | an exception catchpoint. | |
9f757bf7 | 13275 | EX: the type of catchpoints used for catching Ada exceptions. |
f7f9143b JB |
13276 | |
13277 | The string returned is a newly allocated string that needs to be | |
13278 | deallocated later. */ | |
13279 | ||
13280 | static char * | |
9f757bf7 XR |
13281 | ada_exception_catchpoint_cond_string (const char *excep_string, |
13282 | enum ada_exception_catchpoint_kind ex) | |
f7f9143b | 13283 | { |
3d0b0fa3 | 13284 | int i; |
9f757bf7 XR |
13285 | bool is_standard_exc = false; |
13286 | const char *actual_exc_expr; | |
13287 | char *ref_exc_expr; | |
13288 | ||
13289 | if (ex == ada_catch_handlers) | |
13290 | { | |
13291 | /* For exception handlers catchpoints, the condition string does | |
13292 | not use the same parameter as for the other exceptions. */ | |
13293 | actual_exc_expr = ("long_integer (GNAT_GCC_exception_Access" | |
13294 | "(gcc_exception).all.occurrence.id)"); | |
13295 | } | |
13296 | else | |
13297 | actual_exc_expr = "long_integer (e)"; | |
3d0b0fa3 | 13298 | |
0963b4bd | 13299 | /* The standard exceptions are a special case. They are defined in |
3d0b0fa3 | 13300 | runtime units that have been compiled without debugging info; if |
28010a5d | 13301 | EXCEP_STRING is the not-fully-qualified name of a standard |
3d0b0fa3 JB |
13302 | exception (e.g. "constraint_error") then, during the evaluation |
13303 | of the condition expression, the symbol lookup on this name would | |
0963b4bd | 13304 | *not* return this standard exception. The catchpoint condition |
3d0b0fa3 JB |
13305 | may then be set only on user-defined exceptions which have the |
13306 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
13307 | ||
13308 | To avoid this unexcepted behavior, these standard exceptions are | |
0963b4bd | 13309 | systematically prefixed by "standard". This means that "catch |
3d0b0fa3 JB |
13310 | exception constraint_error" is rewritten into "catch exception |
13311 | standard.constraint_error". | |
13312 | ||
13313 | If an exception named contraint_error is defined in another package of | |
13314 | the inferior program, then the only way to specify this exception as a | |
13315 | breakpoint condition is to use its fully-qualified named: | |
13316 | e.g. my_package.constraint_error. */ | |
13317 | ||
13318 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) | |
13319 | { | |
28010a5d | 13320 | if (strcmp (standard_exc [i], excep_string) == 0) |
3d0b0fa3 | 13321 | { |
9f757bf7 XR |
13322 | is_standard_exc = true; |
13323 | break; | |
3d0b0fa3 JB |
13324 | } |
13325 | } | |
9f757bf7 XR |
13326 | |
13327 | if (is_standard_exc) | |
13328 | ref_exc_expr = xstrprintf ("long_integer (&standard.%s)", excep_string); | |
13329 | else | |
13330 | ref_exc_expr = xstrprintf ("long_integer (&%s)", excep_string); | |
13331 | ||
13332 | char *result = xstrprintf ("%s = %s", actual_exc_expr, ref_exc_expr); | |
13333 | xfree (ref_exc_expr); | |
13334 | return result; | |
f7f9143b JB |
13335 | } |
13336 | ||
13337 | /* Return the symtab_and_line that should be used to insert an exception | |
13338 | catchpoint of the TYPE kind. | |
13339 | ||
28010a5d PA |
13340 | EXCEP_STRING should contain the name of a specific exception that |
13341 | the catchpoint should catch, or NULL otherwise. | |
f7f9143b | 13342 | |
28010a5d PA |
13343 | ADDR_STRING returns the name of the function where the real |
13344 | breakpoint that implements the catchpoints is set, depending on the | |
13345 | type of catchpoint we need to create. */ | |
f7f9143b JB |
13346 | |
13347 | static struct symtab_and_line | |
761269c8 | 13348 | ada_exception_sal (enum ada_exception_catchpoint_kind ex, char *excep_string, |
f2fc3015 | 13349 | const char **addr_string, const struct breakpoint_ops **ops) |
f7f9143b JB |
13350 | { |
13351 | const char *sym_name; | |
13352 | struct symbol *sym; | |
f7f9143b | 13353 | |
0259addd JB |
13354 | /* First, find out which exception support info to use. */ |
13355 | ada_exception_support_info_sniffer (); | |
13356 | ||
13357 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b | 13358 | the Ada exceptions requested by the user. */ |
f7f9143b JB |
13359 | sym_name = ada_exception_sym_name (ex); |
13360 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
13361 | ||
f17011e0 JB |
13362 | /* We can assume that SYM is not NULL at this stage. If the symbol |
13363 | did not exist, ada_exception_support_info_sniffer would have | |
13364 | raised an exception. | |
f7f9143b | 13365 | |
f17011e0 JB |
13366 | Also, ada_exception_support_info_sniffer should have already |
13367 | verified that SYM is a function symbol. */ | |
13368 | gdb_assert (sym != NULL); | |
13369 | gdb_assert (SYMBOL_CLASS (sym) == LOC_BLOCK); | |
f7f9143b JB |
13370 | |
13371 | /* Set ADDR_STRING. */ | |
f7f9143b JB |
13372 | *addr_string = xstrdup (sym_name); |
13373 | ||
f7f9143b | 13374 | /* Set OPS. */ |
4b9eee8c | 13375 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b | 13376 | |
f17011e0 | 13377 | return find_function_start_sal (sym, 1); |
f7f9143b JB |
13378 | } |
13379 | ||
b4a5b78b | 13380 | /* Create an Ada exception catchpoint. |
f7f9143b | 13381 | |
b4a5b78b | 13382 | EX_KIND is the kind of exception catchpoint to be created. |
5845583d | 13383 | |
2df4d1d5 JB |
13384 | If EXCEPT_STRING is NULL, this catchpoint is expected to trigger |
13385 | for all exceptions. Otherwise, EXCEPT_STRING indicates the name | |
13386 | of the exception to which this catchpoint applies. When not NULL, | |
13387 | the string must be allocated on the heap, and its deallocation | |
13388 | is no longer the responsibility of the caller. | |
13389 | ||
13390 | COND_STRING, if not NULL, is the catchpoint condition. This string | |
13391 | must be allocated on the heap, and its deallocation is no longer | |
13392 | the responsibility of the caller. | |
f7f9143b | 13393 | |
b4a5b78b JB |
13394 | TEMPFLAG, if nonzero, means that the underlying breakpoint |
13395 | should be temporary. | |
28010a5d | 13396 | |
b4a5b78b | 13397 | FROM_TTY is the usual argument passed to all commands implementations. */ |
28010a5d | 13398 | |
349774ef | 13399 | void |
28010a5d | 13400 | create_ada_exception_catchpoint (struct gdbarch *gdbarch, |
761269c8 | 13401 | enum ada_exception_catchpoint_kind ex_kind, |
28010a5d | 13402 | char *excep_string, |
5845583d | 13403 | char *cond_string, |
28010a5d | 13404 | int tempflag, |
349774ef | 13405 | int disabled, |
28010a5d PA |
13406 | int from_tty) |
13407 | { | |
f2fc3015 | 13408 | const char *addr_string = NULL; |
b4a5b78b JB |
13409 | const struct breakpoint_ops *ops = NULL; |
13410 | struct symtab_and_line sal | |
13411 | = ada_exception_sal (ex_kind, excep_string, &addr_string, &ops); | |
28010a5d | 13412 | |
b270e6f9 TT |
13413 | std::unique_ptr<ada_catchpoint> c (new ada_catchpoint ()); |
13414 | init_ada_exception_breakpoint (c.get (), gdbarch, sal, addr_string, | |
349774ef | 13415 | ops, tempflag, disabled, from_tty); |
28010a5d | 13416 | c->excep_string = excep_string; |
9f757bf7 | 13417 | create_excep_cond_exprs (c.get (), ex_kind); |
5845583d | 13418 | if (cond_string != NULL) |
b270e6f9 TT |
13419 | set_breakpoint_condition (c.get (), cond_string, from_tty); |
13420 | install_breakpoint (0, std::move (c), 1); | |
f7f9143b JB |
13421 | } |
13422 | ||
9ac4176b PA |
13423 | /* Implement the "catch exception" command. */ |
13424 | ||
13425 | static void | |
eb4c3f4a | 13426 | catch_ada_exception_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
13427 | struct cmd_list_element *command) |
13428 | { | |
a121b7c1 | 13429 | const char *arg = arg_entry; |
9ac4176b PA |
13430 | struct gdbarch *gdbarch = get_current_arch (); |
13431 | int tempflag; | |
761269c8 | 13432 | enum ada_exception_catchpoint_kind ex_kind; |
28010a5d | 13433 | char *excep_string = NULL; |
5845583d | 13434 | char *cond_string = NULL; |
9ac4176b PA |
13435 | |
13436 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13437 | ||
13438 | if (!arg) | |
13439 | arg = ""; | |
9f757bf7 XR |
13440 | catch_ada_exception_command_split (arg, false, &ex_kind, &excep_string, |
13441 | &cond_string); | |
13442 | create_ada_exception_catchpoint (gdbarch, ex_kind, | |
13443 | excep_string, cond_string, | |
13444 | tempflag, 1 /* enabled */, | |
13445 | from_tty); | |
13446 | } | |
13447 | ||
13448 | /* Implement the "catch handlers" command. */ | |
13449 | ||
13450 | static void | |
13451 | catch_ada_handlers_command (const char *arg_entry, int from_tty, | |
13452 | struct cmd_list_element *command) | |
13453 | { | |
13454 | const char *arg = arg_entry; | |
13455 | struct gdbarch *gdbarch = get_current_arch (); | |
13456 | int tempflag; | |
13457 | enum ada_exception_catchpoint_kind ex_kind; | |
13458 | char *excep_string = NULL; | |
13459 | char *cond_string = NULL; | |
13460 | ||
13461 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13462 | ||
13463 | if (!arg) | |
13464 | arg = ""; | |
13465 | catch_ada_exception_command_split (arg, true, &ex_kind, &excep_string, | |
b4a5b78b JB |
13466 | &cond_string); |
13467 | create_ada_exception_catchpoint (gdbarch, ex_kind, | |
13468 | excep_string, cond_string, | |
349774ef JB |
13469 | tempflag, 1 /* enabled */, |
13470 | from_tty); | |
9ac4176b PA |
13471 | } |
13472 | ||
b4a5b78b | 13473 | /* Split the arguments specified in a "catch assert" command. |
5845583d | 13474 | |
b4a5b78b JB |
13475 | ARGS contains the command's arguments (or the empty string if |
13476 | no arguments were passed). | |
5845583d JB |
13477 | |
13478 | If ARGS contains a condition, set COND_STRING to that condition | |
b4a5b78b | 13479 | (the memory needs to be deallocated after use). */ |
5845583d | 13480 | |
b4a5b78b | 13481 | static void |
a121b7c1 | 13482 | catch_ada_assert_command_split (const char *args, char **cond_string) |
f7f9143b | 13483 | { |
f1735a53 | 13484 | args = skip_spaces (args); |
f7f9143b | 13485 | |
5845583d | 13486 | /* Check whether a condition was provided. */ |
61012eef | 13487 | if (startswith (args, "if") |
5845583d | 13488 | && (isspace (args[2]) || args[2] == '\0')) |
f7f9143b | 13489 | { |
5845583d | 13490 | args += 2; |
f1735a53 | 13491 | args = skip_spaces (args); |
5845583d JB |
13492 | if (args[0] == '\0') |
13493 | error (_("condition missing after `if' keyword")); | |
13494 | *cond_string = xstrdup (args); | |
f7f9143b JB |
13495 | } |
13496 | ||
5845583d JB |
13497 | /* Otherwise, there should be no other argument at the end of |
13498 | the command. */ | |
13499 | else if (args[0] != '\0') | |
13500 | error (_("Junk at end of arguments.")); | |
f7f9143b JB |
13501 | } |
13502 | ||
9ac4176b PA |
13503 | /* Implement the "catch assert" command. */ |
13504 | ||
13505 | static void | |
eb4c3f4a | 13506 | catch_assert_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
13507 | struct cmd_list_element *command) |
13508 | { | |
a121b7c1 | 13509 | const char *arg = arg_entry; |
9ac4176b PA |
13510 | struct gdbarch *gdbarch = get_current_arch (); |
13511 | int tempflag; | |
5845583d | 13512 | char *cond_string = NULL; |
9ac4176b PA |
13513 | |
13514 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
13515 | ||
13516 | if (!arg) | |
13517 | arg = ""; | |
b4a5b78b | 13518 | catch_ada_assert_command_split (arg, &cond_string); |
761269c8 | 13519 | create_ada_exception_catchpoint (gdbarch, ada_catch_assert, |
b4a5b78b | 13520 | NULL, cond_string, |
349774ef JB |
13521 | tempflag, 1 /* enabled */, |
13522 | from_tty); | |
9ac4176b | 13523 | } |
778865d3 JB |
13524 | |
13525 | /* Return non-zero if the symbol SYM is an Ada exception object. */ | |
13526 | ||
13527 | static int | |
13528 | ada_is_exception_sym (struct symbol *sym) | |
13529 | { | |
13530 | const char *type_name = type_name_no_tag (SYMBOL_TYPE (sym)); | |
13531 | ||
13532 | return (SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
13533 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
13534 | && SYMBOL_CLASS (sym) != LOC_CONST | |
13535 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
13536 | && type_name != NULL && strcmp (type_name, "exception") == 0); | |
13537 | } | |
13538 | ||
13539 | /* Given a global symbol SYM, return non-zero iff SYM is a non-standard | |
13540 | Ada exception object. This matches all exceptions except the ones | |
13541 | defined by the Ada language. */ | |
13542 | ||
13543 | static int | |
13544 | ada_is_non_standard_exception_sym (struct symbol *sym) | |
13545 | { | |
13546 | int i; | |
13547 | ||
13548 | if (!ada_is_exception_sym (sym)) | |
13549 | return 0; | |
13550 | ||
13551 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
13552 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), standard_exc[i]) == 0) | |
13553 | return 0; /* A standard exception. */ | |
13554 | ||
13555 | /* Numeric_Error is also a standard exception, so exclude it. | |
13556 | See the STANDARD_EXC description for more details as to why | |
13557 | this exception is not listed in that array. */ | |
13558 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "numeric_error") == 0) | |
13559 | return 0; | |
13560 | ||
13561 | return 1; | |
13562 | } | |
13563 | ||
ab816a27 | 13564 | /* A helper function for std::sort, comparing two struct ada_exc_info |
778865d3 JB |
13565 | objects. |
13566 | ||
13567 | The comparison is determined first by exception name, and then | |
13568 | by exception address. */ | |
13569 | ||
ab816a27 | 13570 | bool |
cc536b21 | 13571 | ada_exc_info::operator< (const ada_exc_info &other) const |
778865d3 | 13572 | { |
778865d3 JB |
13573 | int result; |
13574 | ||
ab816a27 TT |
13575 | result = strcmp (name, other.name); |
13576 | if (result < 0) | |
13577 | return true; | |
13578 | if (result == 0 && addr < other.addr) | |
13579 | return true; | |
13580 | return false; | |
13581 | } | |
778865d3 | 13582 | |
ab816a27 | 13583 | bool |
cc536b21 | 13584 | ada_exc_info::operator== (const ada_exc_info &other) const |
ab816a27 TT |
13585 | { |
13586 | return addr == other.addr && strcmp (name, other.name) == 0; | |
778865d3 JB |
13587 | } |
13588 | ||
13589 | /* Sort EXCEPTIONS using compare_ada_exception_info as the comparison | |
13590 | routine, but keeping the first SKIP elements untouched. | |
13591 | ||
13592 | All duplicates are also removed. */ | |
13593 | ||
13594 | static void | |
ab816a27 | 13595 | sort_remove_dups_ada_exceptions_list (std::vector<ada_exc_info> *exceptions, |
778865d3 JB |
13596 | int skip) |
13597 | { | |
ab816a27 TT |
13598 | std::sort (exceptions->begin () + skip, exceptions->end ()); |
13599 | exceptions->erase (std::unique (exceptions->begin () + skip, exceptions->end ()), | |
13600 | exceptions->end ()); | |
778865d3 JB |
13601 | } |
13602 | ||
778865d3 JB |
13603 | /* Add all exceptions defined by the Ada standard whose name match |
13604 | a regular expression. | |
13605 | ||
13606 | If PREG is not NULL, then this regexp_t object is used to | |
13607 | perform the symbol name matching. Otherwise, no name-based | |
13608 | filtering is performed. | |
13609 | ||
13610 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13611 | gets pushed. */ | |
13612 | ||
13613 | static void | |
2d7cc5c7 | 13614 | ada_add_standard_exceptions (compiled_regex *preg, |
ab816a27 | 13615 | std::vector<ada_exc_info> *exceptions) |
778865d3 JB |
13616 | { |
13617 | int i; | |
13618 | ||
13619 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
13620 | { | |
13621 | if (preg == NULL | |
2d7cc5c7 | 13622 | || preg->exec (standard_exc[i], 0, NULL, 0) == 0) |
778865d3 JB |
13623 | { |
13624 | struct bound_minimal_symbol msymbol | |
13625 | = ada_lookup_simple_minsym (standard_exc[i]); | |
13626 | ||
13627 | if (msymbol.minsym != NULL) | |
13628 | { | |
13629 | struct ada_exc_info info | |
77e371c0 | 13630 | = {standard_exc[i], BMSYMBOL_VALUE_ADDRESS (msymbol)}; |
778865d3 | 13631 | |
ab816a27 | 13632 | exceptions->push_back (info); |
778865d3 JB |
13633 | } |
13634 | } | |
13635 | } | |
13636 | } | |
13637 | ||
13638 | /* Add all Ada exceptions defined locally and accessible from the given | |
13639 | FRAME. | |
13640 | ||
13641 | If PREG is not NULL, then this regexp_t object is used to | |
13642 | perform the symbol name matching. Otherwise, no name-based | |
13643 | filtering is performed. | |
13644 | ||
13645 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13646 | gets pushed. */ | |
13647 | ||
13648 | static void | |
2d7cc5c7 PA |
13649 | ada_add_exceptions_from_frame (compiled_regex *preg, |
13650 | struct frame_info *frame, | |
ab816a27 | 13651 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 13652 | { |
3977b71f | 13653 | const struct block *block = get_frame_block (frame, 0); |
778865d3 JB |
13654 | |
13655 | while (block != 0) | |
13656 | { | |
13657 | struct block_iterator iter; | |
13658 | struct symbol *sym; | |
13659 | ||
13660 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
13661 | { | |
13662 | switch (SYMBOL_CLASS (sym)) | |
13663 | { | |
13664 | case LOC_TYPEDEF: | |
13665 | case LOC_BLOCK: | |
13666 | case LOC_CONST: | |
13667 | break; | |
13668 | default: | |
13669 | if (ada_is_exception_sym (sym)) | |
13670 | { | |
13671 | struct ada_exc_info info = {SYMBOL_PRINT_NAME (sym), | |
13672 | SYMBOL_VALUE_ADDRESS (sym)}; | |
13673 | ||
ab816a27 | 13674 | exceptions->push_back (info); |
778865d3 JB |
13675 | } |
13676 | } | |
13677 | } | |
13678 | if (BLOCK_FUNCTION (block) != NULL) | |
13679 | break; | |
13680 | block = BLOCK_SUPERBLOCK (block); | |
13681 | } | |
13682 | } | |
13683 | ||
14bc53a8 PA |
13684 | /* Return true if NAME matches PREG or if PREG is NULL. */ |
13685 | ||
13686 | static bool | |
2d7cc5c7 | 13687 | name_matches_regex (const char *name, compiled_regex *preg) |
14bc53a8 PA |
13688 | { |
13689 | return (preg == NULL | |
2d7cc5c7 | 13690 | || preg->exec (ada_decode (name), 0, NULL, 0) == 0); |
14bc53a8 PA |
13691 | } |
13692 | ||
778865d3 JB |
13693 | /* Add all exceptions defined globally whose name name match |
13694 | a regular expression, excluding standard exceptions. | |
13695 | ||
13696 | The reason we exclude standard exceptions is that they need | |
13697 | to be handled separately: Standard exceptions are defined inside | |
13698 | a runtime unit which is normally not compiled with debugging info, | |
13699 | and thus usually do not show up in our symbol search. However, | |
13700 | if the unit was in fact built with debugging info, we need to | |
13701 | exclude them because they would duplicate the entry we found | |
13702 | during the special loop that specifically searches for those | |
13703 | standard exceptions. | |
13704 | ||
13705 | If PREG is not NULL, then this regexp_t object is used to | |
13706 | perform the symbol name matching. Otherwise, no name-based | |
13707 | filtering is performed. | |
13708 | ||
13709 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13710 | gets pushed. */ | |
13711 | ||
13712 | static void | |
2d7cc5c7 | 13713 | ada_add_global_exceptions (compiled_regex *preg, |
ab816a27 | 13714 | std::vector<ada_exc_info> *exceptions) |
778865d3 JB |
13715 | { |
13716 | struct objfile *objfile; | |
43f3e411 | 13717 | struct compunit_symtab *s; |
778865d3 | 13718 | |
14bc53a8 PA |
13719 | /* In Ada, the symbol "search name" is a linkage name, whereas the |
13720 | regular expression used to do the matching refers to the natural | |
13721 | name. So match against the decoded name. */ | |
13722 | expand_symtabs_matching (NULL, | |
b5ec771e | 13723 | lookup_name_info::match_any (), |
14bc53a8 PA |
13724 | [&] (const char *search_name) |
13725 | { | |
13726 | const char *decoded = ada_decode (search_name); | |
13727 | return name_matches_regex (decoded, preg); | |
13728 | }, | |
13729 | NULL, | |
13730 | VARIABLES_DOMAIN); | |
778865d3 | 13731 | |
43f3e411 | 13732 | ALL_COMPUNITS (objfile, s) |
778865d3 | 13733 | { |
43f3e411 | 13734 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (s); |
778865d3 JB |
13735 | int i; |
13736 | ||
13737 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
13738 | { | |
13739 | struct block *b = BLOCKVECTOR_BLOCK (bv, i); | |
13740 | struct block_iterator iter; | |
13741 | struct symbol *sym; | |
13742 | ||
13743 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13744 | if (ada_is_non_standard_exception_sym (sym) | |
14bc53a8 | 13745 | && name_matches_regex (SYMBOL_NATURAL_NAME (sym), preg)) |
778865d3 JB |
13746 | { |
13747 | struct ada_exc_info info | |
13748 | = {SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE_ADDRESS (sym)}; | |
13749 | ||
ab816a27 | 13750 | exceptions->push_back (info); |
778865d3 JB |
13751 | } |
13752 | } | |
13753 | } | |
13754 | } | |
13755 | ||
13756 | /* Implements ada_exceptions_list with the regular expression passed | |
13757 | as a regex_t, rather than a string. | |
13758 | ||
13759 | If not NULL, PREG is used to filter out exceptions whose names | |
13760 | do not match. Otherwise, all exceptions are listed. */ | |
13761 | ||
ab816a27 | 13762 | static std::vector<ada_exc_info> |
2d7cc5c7 | 13763 | ada_exceptions_list_1 (compiled_regex *preg) |
778865d3 | 13764 | { |
ab816a27 | 13765 | std::vector<ada_exc_info> result; |
778865d3 JB |
13766 | int prev_len; |
13767 | ||
13768 | /* First, list the known standard exceptions. These exceptions | |
13769 | need to be handled separately, as they are usually defined in | |
13770 | runtime units that have been compiled without debugging info. */ | |
13771 | ||
13772 | ada_add_standard_exceptions (preg, &result); | |
13773 | ||
13774 | /* Next, find all exceptions whose scope is local and accessible | |
13775 | from the currently selected frame. */ | |
13776 | ||
13777 | if (has_stack_frames ()) | |
13778 | { | |
ab816a27 | 13779 | prev_len = result.size (); |
778865d3 JB |
13780 | ada_add_exceptions_from_frame (preg, get_selected_frame (NULL), |
13781 | &result); | |
ab816a27 | 13782 | if (result.size () > prev_len) |
778865d3 JB |
13783 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13784 | } | |
13785 | ||
13786 | /* Add all exceptions whose scope is global. */ | |
13787 | ||
ab816a27 | 13788 | prev_len = result.size (); |
778865d3 | 13789 | ada_add_global_exceptions (preg, &result); |
ab816a27 | 13790 | if (result.size () > prev_len) |
778865d3 JB |
13791 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13792 | ||
778865d3 JB |
13793 | return result; |
13794 | } | |
13795 | ||
13796 | /* Return a vector of ada_exc_info. | |
13797 | ||
13798 | If REGEXP is NULL, all exceptions are included in the result. | |
13799 | Otherwise, it should contain a valid regular expression, | |
13800 | and only the exceptions whose names match that regular expression | |
13801 | are included in the result. | |
13802 | ||
13803 | The exceptions are sorted in the following order: | |
13804 | - Standard exceptions (defined by the Ada language), in | |
13805 | alphabetical order; | |
13806 | - Exceptions only visible from the current frame, in | |
13807 | alphabetical order; | |
13808 | - Exceptions whose scope is global, in alphabetical order. */ | |
13809 | ||
ab816a27 | 13810 | std::vector<ada_exc_info> |
778865d3 JB |
13811 | ada_exceptions_list (const char *regexp) |
13812 | { | |
2d7cc5c7 PA |
13813 | if (regexp == NULL) |
13814 | return ada_exceptions_list_1 (NULL); | |
778865d3 | 13815 | |
2d7cc5c7 PA |
13816 | compiled_regex reg (regexp, REG_NOSUB, _("invalid regular expression")); |
13817 | return ada_exceptions_list_1 (®); | |
778865d3 JB |
13818 | } |
13819 | ||
13820 | /* Implement the "info exceptions" command. */ | |
13821 | ||
13822 | static void | |
1d12d88f | 13823 | info_exceptions_command (const char *regexp, int from_tty) |
778865d3 | 13824 | { |
778865d3 | 13825 | struct gdbarch *gdbarch = get_current_arch (); |
778865d3 | 13826 | |
ab816a27 | 13827 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (regexp); |
778865d3 JB |
13828 | |
13829 | if (regexp != NULL) | |
13830 | printf_filtered | |
13831 | (_("All Ada exceptions matching regular expression \"%s\":\n"), regexp); | |
13832 | else | |
13833 | printf_filtered (_("All defined Ada exceptions:\n")); | |
13834 | ||
ab816a27 TT |
13835 | for (const ada_exc_info &info : exceptions) |
13836 | printf_filtered ("%s: %s\n", info.name, paddress (gdbarch, info.addr)); | |
778865d3 JB |
13837 | } |
13838 | ||
4c4b4cd2 PH |
13839 | /* Operators */ |
13840 | /* Information about operators given special treatment in functions | |
13841 | below. */ | |
13842 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
13843 | ||
13844 | #define ADA_OPERATORS \ | |
13845 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
13846 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
13847 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
13848 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
13849 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
13850 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
13851 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
13852 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
13853 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
13854 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
13855 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
13856 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
13857 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
13858 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
13859 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
13860 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
13861 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
13862 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
13863 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
13864 | |
13865 | static void | |
554794dc SDJ |
13866 | ada_operator_length (const struct expression *exp, int pc, int *oplenp, |
13867 | int *argsp) | |
4c4b4cd2 PH |
13868 | { |
13869 | switch (exp->elts[pc - 1].opcode) | |
13870 | { | |
76a01679 | 13871 | default: |
4c4b4cd2 PH |
13872 | operator_length_standard (exp, pc, oplenp, argsp); |
13873 | break; | |
13874 | ||
13875 | #define OP_DEFN(op, len, args, binop) \ | |
13876 | case op: *oplenp = len; *argsp = args; break; | |
13877 | ADA_OPERATORS; | |
13878 | #undef OP_DEFN | |
52ce6436 PH |
13879 | |
13880 | case OP_AGGREGATE: | |
13881 | *oplenp = 3; | |
13882 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
13883 | break; | |
13884 | ||
13885 | case OP_CHOICES: | |
13886 | *oplenp = 3; | |
13887 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
13888 | break; | |
4c4b4cd2 PH |
13889 | } |
13890 | } | |
13891 | ||
c0201579 JK |
13892 | /* Implementation of the exp_descriptor method operator_check. */ |
13893 | ||
13894 | static int | |
13895 | ada_operator_check (struct expression *exp, int pos, | |
13896 | int (*objfile_func) (struct objfile *objfile, void *data), | |
13897 | void *data) | |
13898 | { | |
13899 | const union exp_element *const elts = exp->elts; | |
13900 | struct type *type = NULL; | |
13901 | ||
13902 | switch (elts[pos].opcode) | |
13903 | { | |
13904 | case UNOP_IN_RANGE: | |
13905 | case UNOP_QUAL: | |
13906 | type = elts[pos + 1].type; | |
13907 | break; | |
13908 | ||
13909 | default: | |
13910 | return operator_check_standard (exp, pos, objfile_func, data); | |
13911 | } | |
13912 | ||
13913 | /* Invoke callbacks for TYPE and OBJFILE if they were set as non-NULL. */ | |
13914 | ||
13915 | if (type && TYPE_OBJFILE (type) | |
13916 | && (*objfile_func) (TYPE_OBJFILE (type), data)) | |
13917 | return 1; | |
13918 | ||
13919 | return 0; | |
13920 | } | |
13921 | ||
a121b7c1 | 13922 | static const char * |
4c4b4cd2 PH |
13923 | ada_op_name (enum exp_opcode opcode) |
13924 | { | |
13925 | switch (opcode) | |
13926 | { | |
76a01679 | 13927 | default: |
4c4b4cd2 | 13928 | return op_name_standard (opcode); |
52ce6436 | 13929 | |
4c4b4cd2 PH |
13930 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
13931 | ADA_OPERATORS; | |
13932 | #undef OP_DEFN | |
52ce6436 PH |
13933 | |
13934 | case OP_AGGREGATE: | |
13935 | return "OP_AGGREGATE"; | |
13936 | case OP_CHOICES: | |
13937 | return "OP_CHOICES"; | |
13938 | case OP_NAME: | |
13939 | return "OP_NAME"; | |
4c4b4cd2 PH |
13940 | } |
13941 | } | |
13942 | ||
13943 | /* As for operator_length, but assumes PC is pointing at the first | |
13944 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 13945 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
13946 | |
13947 | static void | |
76a01679 JB |
13948 | ada_forward_operator_length (struct expression *exp, int pc, |
13949 | int *oplenp, int *argsp) | |
4c4b4cd2 | 13950 | { |
76a01679 | 13951 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
13952 | { |
13953 | default: | |
13954 | *oplenp = *argsp = 0; | |
13955 | break; | |
52ce6436 | 13956 | |
4c4b4cd2 PH |
13957 | #define OP_DEFN(op, len, args, binop) \ |
13958 | case op: *oplenp = len; *argsp = args; break; | |
13959 | ADA_OPERATORS; | |
13960 | #undef OP_DEFN | |
52ce6436 PH |
13961 | |
13962 | case OP_AGGREGATE: | |
13963 | *oplenp = 3; | |
13964 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
13965 | break; | |
13966 | ||
13967 | case OP_CHOICES: | |
13968 | *oplenp = 3; | |
13969 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
13970 | break; | |
13971 | ||
13972 | case OP_STRING: | |
13973 | case OP_NAME: | |
13974 | { | |
13975 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
5b4ee69b | 13976 | |
52ce6436 PH |
13977 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); |
13978 | *argsp = 0; | |
13979 | break; | |
13980 | } | |
4c4b4cd2 PH |
13981 | } |
13982 | } | |
13983 | ||
13984 | static int | |
13985 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
13986 | { | |
13987 | enum exp_opcode op = exp->elts[elt].opcode; | |
13988 | int oplen, nargs; | |
13989 | int pc = elt; | |
13990 | int i; | |
76a01679 | 13991 | |
4c4b4cd2 PH |
13992 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
13993 | ||
76a01679 | 13994 | switch (op) |
4c4b4cd2 | 13995 | { |
76a01679 | 13996 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
13997 | case OP_ATR_FIRST: |
13998 | case OP_ATR_LAST: | |
13999 | case OP_ATR_LENGTH: | |
14000 | case OP_ATR_IMAGE: | |
14001 | case OP_ATR_MAX: | |
14002 | case OP_ATR_MIN: | |
14003 | case OP_ATR_MODULUS: | |
14004 | case OP_ATR_POS: | |
14005 | case OP_ATR_SIZE: | |
14006 | case OP_ATR_TAG: | |
14007 | case OP_ATR_VAL: | |
14008 | break; | |
14009 | ||
14010 | case UNOP_IN_RANGE: | |
14011 | case UNOP_QUAL: | |
323e0a4a AC |
14012 | /* XXX: gdb_sprint_host_address, type_sprint */ |
14013 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
14014 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
14015 | fprintf_filtered (stream, " ("); | |
14016 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
14017 | fprintf_filtered (stream, ")"); | |
14018 | break; | |
14019 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
14020 | fprintf_filtered (stream, " (%d)", |
14021 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
14022 | break; |
14023 | case TERNOP_IN_RANGE: | |
14024 | break; | |
14025 | ||
52ce6436 PH |
14026 | case OP_AGGREGATE: |
14027 | case OP_OTHERS: | |
14028 | case OP_DISCRETE_RANGE: | |
14029 | case OP_POSITIONAL: | |
14030 | case OP_CHOICES: | |
14031 | break; | |
14032 | ||
14033 | case OP_NAME: | |
14034 | case OP_STRING: | |
14035 | { | |
14036 | char *name = &exp->elts[elt + 2].string; | |
14037 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
5b4ee69b | 14038 | |
52ce6436 PH |
14039 | fprintf_filtered (stream, "Text: `%.*s'", len, name); |
14040 | break; | |
14041 | } | |
14042 | ||
4c4b4cd2 PH |
14043 | default: |
14044 | return dump_subexp_body_standard (exp, stream, elt); | |
14045 | } | |
14046 | ||
14047 | elt += oplen; | |
14048 | for (i = 0; i < nargs; i += 1) | |
14049 | elt = dump_subexp (exp, stream, elt); | |
14050 | ||
14051 | return elt; | |
14052 | } | |
14053 | ||
14054 | /* The Ada extension of print_subexp (q.v.). */ | |
14055 | ||
76a01679 JB |
14056 | static void |
14057 | ada_print_subexp (struct expression *exp, int *pos, | |
14058 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 14059 | { |
52ce6436 | 14060 | int oplen, nargs, i; |
4c4b4cd2 PH |
14061 | int pc = *pos; |
14062 | enum exp_opcode op = exp->elts[pc].opcode; | |
14063 | ||
14064 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
14065 | ||
52ce6436 | 14066 | *pos += oplen; |
4c4b4cd2 PH |
14067 | switch (op) |
14068 | { | |
14069 | default: | |
52ce6436 | 14070 | *pos -= oplen; |
4c4b4cd2 PH |
14071 | print_subexp_standard (exp, pos, stream, prec); |
14072 | return; | |
14073 | ||
14074 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
14075 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
14076 | return; | |
14077 | ||
14078 | case BINOP_IN_BOUNDS: | |
323e0a4a | 14079 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 14080 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 14081 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 14082 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 14083 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 14084 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
14085 | fprintf_filtered (stream, "(%ld)", |
14086 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
14087 | return; |
14088 | ||
14089 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 14090 | if (prec >= PREC_EQUAL) |
76a01679 | 14091 | fputs_filtered ("(", stream); |
323e0a4a | 14092 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 14093 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 14094 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
14095 | print_subexp (exp, pos, stream, PREC_EQUAL); |
14096 | fputs_filtered (" .. ", stream); | |
14097 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
14098 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
14099 | fputs_filtered (")", stream); |
14100 | return; | |
4c4b4cd2 PH |
14101 | |
14102 | case OP_ATR_FIRST: | |
14103 | case OP_ATR_LAST: | |
14104 | case OP_ATR_LENGTH: | |
14105 | case OP_ATR_IMAGE: | |
14106 | case OP_ATR_MAX: | |
14107 | case OP_ATR_MIN: | |
14108 | case OP_ATR_MODULUS: | |
14109 | case OP_ATR_POS: | |
14110 | case OP_ATR_SIZE: | |
14111 | case OP_ATR_TAG: | |
14112 | case OP_ATR_VAL: | |
4c4b4cd2 | 14113 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
14114 | { |
14115 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
79d43c61 TT |
14116 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0, |
14117 | &type_print_raw_options); | |
76a01679 JB |
14118 | *pos += 3; |
14119 | } | |
4c4b4cd2 | 14120 | else |
76a01679 | 14121 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
14122 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
14123 | if (nargs > 1) | |
76a01679 JB |
14124 | { |
14125 | int tem; | |
5b4ee69b | 14126 | |
76a01679 JB |
14127 | for (tem = 1; tem < nargs; tem += 1) |
14128 | { | |
14129 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
14130 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
14131 | } | |
14132 | fputs_filtered (")", stream); | |
14133 | } | |
4c4b4cd2 | 14134 | return; |
14f9c5c9 | 14135 | |
4c4b4cd2 | 14136 | case UNOP_QUAL: |
4c4b4cd2 PH |
14137 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
14138 | fputs_filtered ("'(", stream); | |
14139 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
14140 | fputs_filtered (")", stream); | |
14141 | return; | |
14f9c5c9 | 14142 | |
4c4b4cd2 | 14143 | case UNOP_IN_RANGE: |
323e0a4a | 14144 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 14145 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 14146 | fputs_filtered (" in ", stream); |
79d43c61 TT |
14147 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0, |
14148 | &type_print_raw_options); | |
4c4b4cd2 | 14149 | return; |
52ce6436 PH |
14150 | |
14151 | case OP_DISCRETE_RANGE: | |
14152 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14153 | fputs_filtered ("..", stream); | |
14154 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14155 | return; | |
14156 | ||
14157 | case OP_OTHERS: | |
14158 | fputs_filtered ("others => ", stream); | |
14159 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14160 | return; | |
14161 | ||
14162 | case OP_CHOICES: | |
14163 | for (i = 0; i < nargs-1; i += 1) | |
14164 | { | |
14165 | if (i > 0) | |
14166 | fputs_filtered ("|", stream); | |
14167 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14168 | } | |
14169 | fputs_filtered (" => ", stream); | |
14170 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14171 | return; | |
14172 | ||
14173 | case OP_POSITIONAL: | |
14174 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14175 | return; | |
14176 | ||
14177 | case OP_AGGREGATE: | |
14178 | fputs_filtered ("(", stream); | |
14179 | for (i = 0; i < nargs; i += 1) | |
14180 | { | |
14181 | if (i > 0) | |
14182 | fputs_filtered (", ", stream); | |
14183 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
14184 | } | |
14185 | fputs_filtered (")", stream); | |
14186 | return; | |
4c4b4cd2 PH |
14187 | } |
14188 | } | |
14f9c5c9 AS |
14189 | |
14190 | /* Table mapping opcodes into strings for printing operators | |
14191 | and precedences of the operators. */ | |
14192 | ||
d2e4a39e AS |
14193 | static const struct op_print ada_op_print_tab[] = { |
14194 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
14195 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
14196 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
14197 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
14198 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
14199 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
14200 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
14201 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
14202 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
14203 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
14204 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
14205 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
14206 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
14207 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
14208 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
14209 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
14210 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
14211 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
14212 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
14213 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
14214 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
14215 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
14216 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
14217 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
14218 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
14219 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
14220 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
14221 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
14222 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
14223 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
14224 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
f486487f | 14225 | {NULL, OP_NULL, PREC_SUFFIX, 0} |
14f9c5c9 AS |
14226 | }; |
14227 | \f | |
72d5681a PH |
14228 | enum ada_primitive_types { |
14229 | ada_primitive_type_int, | |
14230 | ada_primitive_type_long, | |
14231 | ada_primitive_type_short, | |
14232 | ada_primitive_type_char, | |
14233 | ada_primitive_type_float, | |
14234 | ada_primitive_type_double, | |
14235 | ada_primitive_type_void, | |
14236 | ada_primitive_type_long_long, | |
14237 | ada_primitive_type_long_double, | |
14238 | ada_primitive_type_natural, | |
14239 | ada_primitive_type_positive, | |
14240 | ada_primitive_type_system_address, | |
08f49010 | 14241 | ada_primitive_type_storage_offset, |
72d5681a PH |
14242 | nr_ada_primitive_types |
14243 | }; | |
6c038f32 PH |
14244 | |
14245 | static void | |
d4a9a881 | 14246 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
14247 | struct language_arch_info *lai) |
14248 | { | |
d4a9a881 | 14249 | const struct builtin_type *builtin = builtin_type (gdbarch); |
5b4ee69b | 14250 | |
72d5681a | 14251 | lai->primitive_type_vector |
d4a9a881 | 14252 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a | 14253 | struct type *); |
e9bb382b UW |
14254 | |
14255 | lai->primitive_type_vector [ada_primitive_type_int] | |
14256 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14257 | 0, "integer"); | |
14258 | lai->primitive_type_vector [ada_primitive_type_long] | |
14259 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
14260 | 0, "long_integer"); | |
14261 | lai->primitive_type_vector [ada_primitive_type_short] | |
14262 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
14263 | 0, "short_integer"); | |
14264 | lai->string_char_type | |
14265 | = lai->primitive_type_vector [ada_primitive_type_char] | |
cd7c1778 | 14266 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); |
e9bb382b UW |
14267 | lai->primitive_type_vector [ada_primitive_type_float] |
14268 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
49f190bc | 14269 | "float", gdbarch_float_format (gdbarch)); |
e9bb382b UW |
14270 | lai->primitive_type_vector [ada_primitive_type_double] |
14271 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
49f190bc | 14272 | "long_float", gdbarch_double_format (gdbarch)); |
e9bb382b UW |
14273 | lai->primitive_type_vector [ada_primitive_type_long_long] |
14274 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
14275 | 0, "long_long_integer"); | |
14276 | lai->primitive_type_vector [ada_primitive_type_long_double] | |
5f3bceb6 | 14277 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
49f190bc | 14278 | "long_long_float", gdbarch_long_double_format (gdbarch)); |
e9bb382b UW |
14279 | lai->primitive_type_vector [ada_primitive_type_natural] |
14280 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14281 | 0, "natural"); | |
14282 | lai->primitive_type_vector [ada_primitive_type_positive] | |
14283 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
14284 | 0, "positive"); | |
14285 | lai->primitive_type_vector [ada_primitive_type_void] | |
14286 | = builtin->builtin_void; | |
14287 | ||
14288 | lai->primitive_type_vector [ada_primitive_type_system_address] | |
77b7c781 UW |
14289 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, |
14290 | "void")); | |
72d5681a PH |
14291 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
14292 | = "system__address"; | |
fbb06eb1 | 14293 | |
08f49010 XR |
14294 | /* Create the equivalent of the System.Storage_Elements.Storage_Offset |
14295 | type. This is a signed integral type whose size is the same as | |
14296 | the size of addresses. */ | |
14297 | { | |
14298 | unsigned int addr_length = TYPE_LENGTH | |
14299 | (lai->primitive_type_vector [ada_primitive_type_system_address]); | |
14300 | ||
14301 | lai->primitive_type_vector [ada_primitive_type_storage_offset] | |
14302 | = arch_integer_type (gdbarch, addr_length * HOST_CHAR_BIT, 0, | |
14303 | "storage_offset"); | |
14304 | } | |
14305 | ||
47e729a8 | 14306 | lai->bool_type_symbol = NULL; |
fbb06eb1 | 14307 | lai->bool_type_default = builtin->builtin_bool; |
6c038f32 | 14308 | } |
6c038f32 PH |
14309 | \f |
14310 | /* Language vector */ | |
14311 | ||
14312 | /* Not really used, but needed in the ada_language_defn. */ | |
14313 | ||
14314 | static void | |
6c7a06a3 | 14315 | emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
6c038f32 | 14316 | { |
6c7a06a3 | 14317 | ada_emit_char (c, type, stream, quoter, 1); |
6c038f32 PH |
14318 | } |
14319 | ||
14320 | static int | |
410a0ff2 | 14321 | parse (struct parser_state *ps) |
6c038f32 PH |
14322 | { |
14323 | warnings_issued = 0; | |
410a0ff2 | 14324 | return ada_parse (ps); |
6c038f32 PH |
14325 | } |
14326 | ||
14327 | static const struct exp_descriptor ada_exp_descriptor = { | |
14328 | ada_print_subexp, | |
14329 | ada_operator_length, | |
c0201579 | 14330 | ada_operator_check, |
6c038f32 PH |
14331 | ada_op_name, |
14332 | ada_dump_subexp_body, | |
14333 | ada_evaluate_subexp | |
14334 | }; | |
14335 | ||
b5ec771e PA |
14336 | /* symbol_name_matcher_ftype adapter for wild_match. */ |
14337 | ||
14338 | static bool | |
14339 | do_wild_match (const char *symbol_search_name, | |
14340 | const lookup_name_info &lookup_name, | |
a207cff2 | 14341 | completion_match_result *comp_match_res) |
b5ec771e PA |
14342 | { |
14343 | return wild_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
14344 | } | |
14345 | ||
14346 | /* symbol_name_matcher_ftype adapter for full_match. */ | |
14347 | ||
14348 | static bool | |
14349 | do_full_match (const char *symbol_search_name, | |
14350 | const lookup_name_info &lookup_name, | |
a207cff2 | 14351 | completion_match_result *comp_match_res) |
b5ec771e PA |
14352 | { |
14353 | return full_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
14354 | } | |
14355 | ||
14356 | /* Build the Ada lookup name for LOOKUP_NAME. */ | |
14357 | ||
14358 | ada_lookup_name_info::ada_lookup_name_info (const lookup_name_info &lookup_name) | |
14359 | { | |
14360 | const std::string &user_name = lookup_name.name (); | |
14361 | ||
14362 | if (user_name[0] == '<') | |
14363 | { | |
14364 | if (user_name.back () == '>') | |
14365 | m_encoded_name = user_name.substr (1, user_name.size () - 2); | |
14366 | else | |
14367 | m_encoded_name = user_name.substr (1, user_name.size () - 1); | |
14368 | m_encoded_p = true; | |
14369 | m_verbatim_p = true; | |
14370 | m_wild_match_p = false; | |
14371 | m_standard_p = false; | |
14372 | } | |
14373 | else | |
14374 | { | |
14375 | m_verbatim_p = false; | |
14376 | ||
14377 | m_encoded_p = user_name.find ("__") != std::string::npos; | |
14378 | ||
14379 | if (!m_encoded_p) | |
14380 | { | |
14381 | const char *folded = ada_fold_name (user_name.c_str ()); | |
14382 | const char *encoded = ada_encode_1 (folded, false); | |
14383 | if (encoded != NULL) | |
14384 | m_encoded_name = encoded; | |
14385 | else | |
14386 | m_encoded_name = user_name; | |
14387 | } | |
14388 | else | |
14389 | m_encoded_name = user_name; | |
14390 | ||
14391 | /* Handle the 'package Standard' special case. See description | |
14392 | of m_standard_p. */ | |
14393 | if (startswith (m_encoded_name.c_str (), "standard__")) | |
14394 | { | |
14395 | m_encoded_name = m_encoded_name.substr (sizeof ("standard__") - 1); | |
14396 | m_standard_p = true; | |
14397 | } | |
14398 | else | |
14399 | m_standard_p = false; | |
74ccd7f5 | 14400 | |
b5ec771e PA |
14401 | /* If the name contains a ".", then the user is entering a fully |
14402 | qualified entity name, and the match must not be done in wild | |
14403 | mode. Similarly, if the user wants to complete what looks | |
14404 | like an encoded name, the match must not be done in wild | |
14405 | mode. Also, in the standard__ special case always do | |
14406 | non-wild matching. */ | |
14407 | m_wild_match_p | |
14408 | = (lookup_name.match_type () != symbol_name_match_type::FULL | |
14409 | && !m_encoded_p | |
14410 | && !m_standard_p | |
14411 | && user_name.find ('.') == std::string::npos); | |
14412 | } | |
14413 | } | |
14414 | ||
14415 | /* symbol_name_matcher_ftype method for Ada. This only handles | |
14416 | completion mode. */ | |
14417 | ||
14418 | static bool | |
14419 | ada_symbol_name_matches (const char *symbol_search_name, | |
14420 | const lookup_name_info &lookup_name, | |
a207cff2 | 14421 | completion_match_result *comp_match_res) |
74ccd7f5 | 14422 | { |
b5ec771e PA |
14423 | return lookup_name.ada ().matches (symbol_search_name, |
14424 | lookup_name.match_type (), | |
a207cff2 | 14425 | comp_match_res); |
b5ec771e PA |
14426 | } |
14427 | ||
de63c46b PA |
14428 | /* A name matcher that matches the symbol name exactly, with |
14429 | strcmp. */ | |
14430 | ||
14431 | static bool | |
14432 | literal_symbol_name_matcher (const char *symbol_search_name, | |
14433 | const lookup_name_info &lookup_name, | |
14434 | completion_match_result *comp_match_res) | |
14435 | { | |
14436 | const std::string &name = lookup_name.name (); | |
14437 | ||
14438 | int cmp = (lookup_name.completion_mode () | |
14439 | ? strncmp (symbol_search_name, name.c_str (), name.size ()) | |
14440 | : strcmp (symbol_search_name, name.c_str ())); | |
14441 | if (cmp == 0) | |
14442 | { | |
14443 | if (comp_match_res != NULL) | |
14444 | comp_match_res->set_match (symbol_search_name); | |
14445 | return true; | |
14446 | } | |
14447 | else | |
14448 | return false; | |
14449 | } | |
14450 | ||
b5ec771e PA |
14451 | /* Implement the "la_get_symbol_name_matcher" language_defn method for |
14452 | Ada. */ | |
14453 | ||
14454 | static symbol_name_matcher_ftype * | |
14455 | ada_get_symbol_name_matcher (const lookup_name_info &lookup_name) | |
14456 | { | |
de63c46b PA |
14457 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
14458 | return literal_symbol_name_matcher; | |
14459 | ||
b5ec771e PA |
14460 | if (lookup_name.completion_mode ()) |
14461 | return ada_symbol_name_matches; | |
74ccd7f5 | 14462 | else |
b5ec771e PA |
14463 | { |
14464 | if (lookup_name.ada ().wild_match_p ()) | |
14465 | return do_wild_match; | |
14466 | else | |
14467 | return do_full_match; | |
14468 | } | |
74ccd7f5 JB |
14469 | } |
14470 | ||
a5ee536b JB |
14471 | /* Implement the "la_read_var_value" language_defn method for Ada. */ |
14472 | ||
14473 | static struct value * | |
63e43d3a PMR |
14474 | ada_read_var_value (struct symbol *var, const struct block *var_block, |
14475 | struct frame_info *frame) | |
a5ee536b | 14476 | { |
3977b71f | 14477 | const struct block *frame_block = NULL; |
a5ee536b JB |
14478 | struct symbol *renaming_sym = NULL; |
14479 | ||
14480 | /* The only case where default_read_var_value is not sufficient | |
14481 | is when VAR is a renaming... */ | |
14482 | if (frame) | |
14483 | frame_block = get_frame_block (frame, NULL); | |
14484 | if (frame_block) | |
14485 | renaming_sym = ada_find_renaming_symbol (var, frame_block); | |
14486 | if (renaming_sym != NULL) | |
14487 | return ada_read_renaming_var_value (renaming_sym, frame_block); | |
14488 | ||
14489 | /* This is a typical case where we expect the default_read_var_value | |
14490 | function to work. */ | |
63e43d3a | 14491 | return default_read_var_value (var, var_block, frame); |
a5ee536b JB |
14492 | } |
14493 | ||
56618e20 TT |
14494 | static const char *ada_extensions[] = |
14495 | { | |
14496 | ".adb", ".ads", ".a", ".ada", ".dg", NULL | |
14497 | }; | |
14498 | ||
47e77640 | 14499 | extern const struct language_defn ada_language_defn = { |
6c038f32 | 14500 | "ada", /* Language name */ |
6abde28f | 14501 | "Ada", |
6c038f32 | 14502 | language_ada, |
6c038f32 | 14503 | range_check_off, |
6c038f32 PH |
14504 | case_sensitive_on, /* Yes, Ada is case-insensitive, but |
14505 | that's not quite what this means. */ | |
6c038f32 | 14506 | array_row_major, |
9a044a89 | 14507 | macro_expansion_no, |
56618e20 | 14508 | ada_extensions, |
6c038f32 PH |
14509 | &ada_exp_descriptor, |
14510 | parse, | |
b3f11165 | 14511 | ada_yyerror, |
6c038f32 PH |
14512 | resolve, |
14513 | ada_printchar, /* Print a character constant */ | |
14514 | ada_printstr, /* Function to print string constant */ | |
14515 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 | 14516 | ada_print_type, /* Print a type using appropriate syntax */ |
be942545 | 14517 | ada_print_typedef, /* Print a typedef using appropriate syntax */ |
6c038f32 PH |
14518 | ada_val_print, /* Print a value using appropriate syntax */ |
14519 | ada_value_print, /* Print a top-level value */ | |
a5ee536b | 14520 | ada_read_var_value, /* la_read_var_value */ |
6c038f32 | 14521 | NULL, /* Language specific skip_trampoline */ |
2b2d9e11 | 14522 | NULL, /* name_of_this */ |
6c038f32 PH |
14523 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
14524 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
14525 | ada_la_decode, /* Language specific symbol demangler */ | |
8b302db8 | 14526 | ada_sniff_from_mangled_name, |
0963b4bd MS |
14527 | NULL, /* Language specific |
14528 | class_name_from_physname */ | |
6c038f32 PH |
14529 | ada_op_print_tab, /* expression operators for printing */ |
14530 | 0, /* c-style arrays */ | |
14531 | 1, /* String lower bound */ | |
6c038f32 | 14532 | ada_get_gdb_completer_word_break_characters, |
eb3ff9a5 | 14533 | ada_collect_symbol_completion_matches, |
72d5681a | 14534 | ada_language_arch_info, |
e79af960 | 14535 | ada_print_array_index, |
41f1b697 | 14536 | default_pass_by_reference, |
ae6a3a4c | 14537 | c_get_string, |
43cc5389 | 14538 | c_watch_location_expression, |
b5ec771e | 14539 | ada_get_symbol_name_matcher, /* la_get_symbol_name_matcher */ |
f8eba3c6 | 14540 | ada_iterate_over_symbols, |
5ffa0793 | 14541 | default_search_name_hash, |
a53b64ea | 14542 | &ada_varobj_ops, |
bb2ec1b3 TT |
14543 | NULL, |
14544 | NULL, | |
6c038f32 PH |
14545 | LANG_MAGIC |
14546 | }; | |
14547 | ||
5bf03f13 JB |
14548 | /* Command-list for the "set/show ada" prefix command. */ |
14549 | static struct cmd_list_element *set_ada_list; | |
14550 | static struct cmd_list_element *show_ada_list; | |
14551 | ||
14552 | /* Implement the "set ada" prefix command. */ | |
14553 | ||
14554 | static void | |
981a3fb3 | 14555 | set_ada_command (const char *arg, int from_tty) |
5bf03f13 JB |
14556 | { |
14557 | printf_unfiltered (_(\ | |
14558 | "\"set ada\" must be followed by the name of a setting.\n")); | |
635c7e8a | 14559 | help_list (set_ada_list, "set ada ", all_commands, gdb_stdout); |
5bf03f13 JB |
14560 | } |
14561 | ||
14562 | /* Implement the "show ada" prefix command. */ | |
14563 | ||
14564 | static void | |
981a3fb3 | 14565 | show_ada_command (const char *args, int from_tty) |
5bf03f13 JB |
14566 | { |
14567 | cmd_show_list (show_ada_list, from_tty, ""); | |
14568 | } | |
14569 | ||
2060206e PA |
14570 | static void |
14571 | initialize_ada_catchpoint_ops (void) | |
14572 | { | |
14573 | struct breakpoint_ops *ops; | |
14574 | ||
14575 | initialize_breakpoint_ops (); | |
14576 | ||
14577 | ops = &catch_exception_breakpoint_ops; | |
14578 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14579 | ops->allocate_location = allocate_location_catch_exception; |
14580 | ops->re_set = re_set_catch_exception; | |
14581 | ops->check_status = check_status_catch_exception; | |
14582 | ops->print_it = print_it_catch_exception; | |
14583 | ops->print_one = print_one_catch_exception; | |
14584 | ops->print_mention = print_mention_catch_exception; | |
14585 | ops->print_recreate = print_recreate_catch_exception; | |
14586 | ||
14587 | ops = &catch_exception_unhandled_breakpoint_ops; | |
14588 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14589 | ops->allocate_location = allocate_location_catch_exception_unhandled; |
14590 | ops->re_set = re_set_catch_exception_unhandled; | |
14591 | ops->check_status = check_status_catch_exception_unhandled; | |
14592 | ops->print_it = print_it_catch_exception_unhandled; | |
14593 | ops->print_one = print_one_catch_exception_unhandled; | |
14594 | ops->print_mention = print_mention_catch_exception_unhandled; | |
14595 | ops->print_recreate = print_recreate_catch_exception_unhandled; | |
14596 | ||
14597 | ops = &catch_assert_breakpoint_ops; | |
14598 | *ops = bkpt_breakpoint_ops; | |
2060206e PA |
14599 | ops->allocate_location = allocate_location_catch_assert; |
14600 | ops->re_set = re_set_catch_assert; | |
14601 | ops->check_status = check_status_catch_assert; | |
14602 | ops->print_it = print_it_catch_assert; | |
14603 | ops->print_one = print_one_catch_assert; | |
14604 | ops->print_mention = print_mention_catch_assert; | |
14605 | ops->print_recreate = print_recreate_catch_assert; | |
9f757bf7 XR |
14606 | |
14607 | ops = &catch_handlers_breakpoint_ops; | |
14608 | *ops = bkpt_breakpoint_ops; | |
14609 | ops->allocate_location = allocate_location_catch_handlers; | |
14610 | ops->re_set = re_set_catch_handlers; | |
14611 | ops->check_status = check_status_catch_handlers; | |
14612 | ops->print_it = print_it_catch_handlers; | |
14613 | ops->print_one = print_one_catch_handlers; | |
14614 | ops->print_mention = print_mention_catch_handlers; | |
14615 | ops->print_recreate = print_recreate_catch_handlers; | |
2060206e PA |
14616 | } |
14617 | ||
3d9434b5 JB |
14618 | /* This module's 'new_objfile' observer. */ |
14619 | ||
14620 | static void | |
14621 | ada_new_objfile_observer (struct objfile *objfile) | |
14622 | { | |
14623 | ada_clear_symbol_cache (); | |
14624 | } | |
14625 | ||
14626 | /* This module's 'free_objfile' observer. */ | |
14627 | ||
14628 | static void | |
14629 | ada_free_objfile_observer (struct objfile *objfile) | |
14630 | { | |
14631 | ada_clear_symbol_cache (); | |
14632 | } | |
14633 | ||
d2e4a39e | 14634 | void |
6c038f32 | 14635 | _initialize_ada_language (void) |
14f9c5c9 | 14636 | { |
2060206e PA |
14637 | initialize_ada_catchpoint_ops (); |
14638 | ||
5bf03f13 JB |
14639 | add_prefix_cmd ("ada", no_class, set_ada_command, |
14640 | _("Prefix command for changing Ada-specfic settings"), | |
14641 | &set_ada_list, "set ada ", 0, &setlist); | |
14642 | ||
14643 | add_prefix_cmd ("ada", no_class, show_ada_command, | |
14644 | _("Generic command for showing Ada-specific settings."), | |
14645 | &show_ada_list, "show ada ", 0, &showlist); | |
14646 | ||
14647 | add_setshow_boolean_cmd ("trust-PAD-over-XVS", class_obscure, | |
14648 | &trust_pad_over_xvs, _("\ | |
14649 | Enable or disable an optimization trusting PAD types over XVS types"), _("\ | |
14650 | Show whether an optimization trusting PAD types over XVS types is activated"), | |
14651 | _("\ | |
14652 | This is related to the encoding used by the GNAT compiler. The debugger\n\ | |
14653 | should normally trust the contents of PAD types, but certain older versions\n\ | |
14654 | of GNAT have a bug that sometimes causes the information in the PAD type\n\ | |
14655 | to be incorrect. Turning this setting \"off\" allows the debugger to\n\ | |
14656 | work around this bug. It is always safe to turn this option \"off\", but\n\ | |
14657 | this incurs a slight performance penalty, so it is recommended to NOT change\n\ | |
14658 | this option to \"off\" unless necessary."), | |
14659 | NULL, NULL, &set_ada_list, &show_ada_list); | |
14660 | ||
d72413e6 PMR |
14661 | add_setshow_boolean_cmd ("print-signatures", class_vars, |
14662 | &print_signatures, _("\ | |
14663 | Enable or disable the output of formal and return types for functions in the \ | |
14664 | overloads selection menu"), _("\ | |
14665 | Show whether the output of formal and return types for functions in the \ | |
14666 | overloads selection menu is activated"), | |
14667 | NULL, NULL, NULL, &set_ada_list, &show_ada_list); | |
14668 | ||
9ac4176b PA |
14669 | add_catch_command ("exception", _("\ |
14670 | Catch Ada exceptions, when raised.\n\ | |
14671 | With an argument, catch only exceptions with the given name."), | |
14672 | catch_ada_exception_command, | |
14673 | NULL, | |
14674 | CATCH_PERMANENT, | |
14675 | CATCH_TEMPORARY); | |
9f757bf7 XR |
14676 | |
14677 | add_catch_command ("handlers", _("\ | |
14678 | Catch Ada exceptions, when handled.\n\ | |
14679 | With an argument, catch only exceptions with the given name."), | |
14680 | catch_ada_handlers_command, | |
14681 | NULL, | |
14682 | CATCH_PERMANENT, | |
14683 | CATCH_TEMPORARY); | |
9ac4176b PA |
14684 | add_catch_command ("assert", _("\ |
14685 | Catch failed Ada assertions, when raised.\n\ | |
14686 | With an argument, catch only exceptions with the given name."), | |
14687 | catch_assert_command, | |
14688 | NULL, | |
14689 | CATCH_PERMANENT, | |
14690 | CATCH_TEMPORARY); | |
14691 | ||
6c038f32 | 14692 | varsize_limit = 65536; |
6c038f32 | 14693 | |
778865d3 JB |
14694 | add_info ("exceptions", info_exceptions_command, |
14695 | _("\ | |
14696 | List all Ada exception names.\n\ | |
14697 | If a regular expression is passed as an argument, only those matching\n\ | |
14698 | the regular expression are listed.")); | |
14699 | ||
c6044dd1 JB |
14700 | add_prefix_cmd ("ada", class_maintenance, maint_set_ada_cmd, |
14701 | _("Set Ada maintenance-related variables."), | |
14702 | &maint_set_ada_cmdlist, "maintenance set ada ", | |
14703 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
14704 | ||
14705 | add_prefix_cmd ("ada", class_maintenance, maint_show_ada_cmd, | |
14706 | _("Show Ada maintenance-related variables"), | |
14707 | &maint_show_ada_cmdlist, "maintenance show ada ", | |
14708 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
14709 | ||
14710 | add_setshow_boolean_cmd | |
14711 | ("ignore-descriptive-types", class_maintenance, | |
14712 | &ada_ignore_descriptive_types_p, | |
14713 | _("Set whether descriptive types generated by GNAT should be ignored."), | |
14714 | _("Show whether descriptive types generated by GNAT should be ignored."), | |
14715 | _("\ | |
14716 | When enabled, the debugger will stop using the DW_AT_GNAT_descriptive_type\n\ | |
14717 | DWARF attribute."), | |
14718 | NULL, NULL, &maint_set_ada_cmdlist, &maint_show_ada_cmdlist); | |
14719 | ||
6c038f32 PH |
14720 | decoded_names_store = htab_create_alloc |
14721 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
14722 | NULL, xcalloc, xfree); | |
6b69afc4 | 14723 | |
3d9434b5 JB |
14724 | /* The ada-lang observers. */ |
14725 | observer_attach_new_objfile (ada_new_objfile_observer); | |
14726 | observer_attach_free_objfile (ada_free_objfile_observer); | |
e802dbe0 | 14727 | observer_attach_inferior_exit (ada_inferior_exit); |
ee01b665 JB |
14728 | |
14729 | /* Setup various context-specific data. */ | |
e802dbe0 | 14730 | ada_inferior_data |
8e260fc0 | 14731 | = register_inferior_data_with_cleanup (NULL, ada_inferior_data_cleanup); |
ee01b665 JB |
14732 | ada_pspace_data_handle |
14733 | = register_program_space_data_with_cleanup (NULL, ada_pspace_data_cleanup); | |
14f9c5c9 | 14734 | } |