Commit | Line | Data |
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6e681866 | 1 | /* Ada language support routines for GDB, the GNU debugger. |
10a2c479 | 2 | |
3666a048 | 3 | Copyright (C) 1992-2021 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> |
d55e5aa6 | 23 | #include "gdb_regex.h" |
4de283e4 TT |
24 | #include "frame.h" |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
14f9c5c9 | 27 | #include "gdbcmd.h" |
4de283e4 TT |
28 | #include "expression.h" |
29 | #include "parser-defs.h" | |
30 | #include "language.h" | |
31 | #include "varobj.h" | |
4de283e4 TT |
32 | #include "inferior.h" |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
35 | #include "breakpoint.h" | |
14f9c5c9 | 36 | #include "gdbcore.h" |
4c4b4cd2 | 37 | #include "hashtab.h" |
4de283e4 TT |
38 | #include "gdb_obstack.h" |
39 | #include "ada-lang.h" | |
40 | #include "completer.h" | |
4de283e4 TT |
41 | #include "ui-out.h" |
42 | #include "block.h" | |
04714b91 | 43 | #include "infcall.h" |
4de283e4 TT |
44 | #include "annotate.h" |
45 | #include "valprint.h" | |
d55e5aa6 | 46 | #include "source.h" |
4de283e4 | 47 | #include "observable.h" |
692465f1 | 48 | #include "stack.h" |
79d43c61 | 49 | #include "typeprint.h" |
4de283e4 | 50 | #include "namespace.h" |
7f6aba03 | 51 | #include "cli/cli-style.h" |
4de283e4 | 52 | |
40bc484c | 53 | #include "value.h" |
4de283e4 TT |
54 | #include "mi/mi-common.h" |
55 | #include "arch-utils.h" | |
56 | #include "cli/cli-utils.h" | |
268a13a5 TT |
57 | #include "gdbsupport/function-view.h" |
58 | #include "gdbsupport/byte-vector.h" | |
4de283e4 | 59 | #include <algorithm> |
03070ee9 | 60 | #include "ada-exp.h" |
ccefe4c4 | 61 | |
4c4b4cd2 | 62 | /* Define whether or not the C operator '/' truncates towards zero for |
0963b4bd | 63 | differently signed operands (truncation direction is undefined in C). |
4c4b4cd2 PH |
64 | Copied from valarith.c. */ |
65 | ||
66 | #ifndef TRUNCATION_TOWARDS_ZERO | |
67 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
68 | #endif | |
69 | ||
d2e4a39e | 70 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 71 | |
d2e4a39e | 72 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 73 | |
d2e4a39e | 74 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 75 | |
d2e4a39e | 76 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 79 | |
556bdfd4 | 80 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static struct value *desc_data (struct value *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static int desc_arity (struct type *); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 99 | |
40bc484c | 100 | static struct value *make_array_descriptor (struct type *, struct value *); |
14f9c5c9 | 101 | |
d1183b06 | 102 | static void ada_add_block_symbols (std::vector<struct block_symbol> &, |
b5ec771e PA |
103 | const struct block *, |
104 | const lookup_name_info &lookup_name, | |
105 | domain_enum, struct objfile *); | |
14f9c5c9 | 106 | |
d1183b06 TT |
107 | static void ada_add_all_symbols (std::vector<struct block_symbol> &, |
108 | const struct block *, | |
b5ec771e PA |
109 | const lookup_name_info &lookup_name, |
110 | domain_enum, int, int *); | |
22cee43f | 111 | |
d1183b06 | 112 | static int is_nonfunction (const std::vector<struct block_symbol> &); |
14f9c5c9 | 113 | |
d1183b06 TT |
114 | static void add_defn_to_vec (std::vector<struct block_symbol> &, |
115 | struct symbol *, | |
dda83cd7 | 116 | const struct block *); |
14f9c5c9 | 117 | |
d2e4a39e | 118 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 119 | |
4c4b4cd2 | 120 | static const char *ada_decoded_op_name (enum exp_opcode); |
14f9c5c9 | 121 | |
d2e4a39e | 122 | static int numeric_type_p (struct type *); |
14f9c5c9 | 123 | |
d2e4a39e | 124 | static int integer_type_p (struct type *); |
14f9c5c9 | 125 | |
d2e4a39e | 126 | static int scalar_type_p (struct type *); |
14f9c5c9 | 127 | |
d2e4a39e | 128 | static int discrete_type_p (struct type *); |
14f9c5c9 | 129 | |
a121b7c1 | 130 | static struct type *ada_lookup_struct_elt_type (struct type *, const char *, |
dda83cd7 | 131 | int, int); |
4c4b4cd2 | 132 | |
b4ba55a1 | 133 | static struct type *ada_find_parallel_type_with_name (struct type *, |
dda83cd7 | 134 | const char *); |
b4ba55a1 | 135 | |
d2e4a39e | 136 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 137 | |
10a2c479 | 138 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 139 | const gdb_byte *, |
dda83cd7 | 140 | CORE_ADDR, struct value *); |
4c4b4cd2 PH |
141 | |
142 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 143 | |
28c85d6c | 144 | static struct type *to_fixed_range_type (struct type *, struct value *); |
14f9c5c9 | 145 | |
d2e4a39e | 146 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 147 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 148 | |
d2e4a39e | 149 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 150 | |
ad82864c | 151 | static struct type *constrained_packed_array_type (struct type *, long *); |
14f9c5c9 | 152 | |
ad82864c | 153 | static struct type *decode_constrained_packed_array_type (struct type *); |
14f9c5c9 | 154 | |
ad82864c JB |
155 | static long decode_packed_array_bitsize (struct type *); |
156 | ||
157 | static struct value *decode_constrained_packed_array (struct value *); | |
158 | ||
ad82864c | 159 | static int ada_is_unconstrained_packed_array_type (struct type *); |
14f9c5c9 | 160 | |
d2e4a39e | 161 | static struct value *value_subscript_packed (struct value *, int, |
dda83cd7 | 162 | struct value **); |
14f9c5c9 | 163 | |
4c4b4cd2 | 164 | static struct value *coerce_unspec_val_to_type (struct value *, |
dda83cd7 | 165 | struct type *); |
14f9c5c9 | 166 | |
d2e4a39e | 167 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 168 | |
d2e4a39e | 169 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 170 | |
d2e4a39e | 171 | static int is_name_suffix (const char *); |
14f9c5c9 | 172 | |
59c8a30b | 173 | static int advance_wild_match (const char **, const char *, char); |
73589123 | 174 | |
b5ec771e | 175 | static bool wild_match (const char *name, const char *patn); |
14f9c5c9 | 176 | |
d2e4a39e | 177 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 178 | |
4c4b4cd2 PH |
179 | static LONGEST pos_atr (struct value *); |
180 | ||
53a47a3e TT |
181 | static struct value *val_atr (struct type *, LONGEST); |
182 | ||
4c4b4cd2 | 183 | static struct symbol *standard_lookup (const char *, const struct block *, |
dda83cd7 | 184 | domain_enum); |
14f9c5c9 | 185 | |
108d56a4 | 186 | static struct value *ada_search_struct_field (const char *, struct value *, int, |
dda83cd7 | 187 | struct type *); |
4c4b4cd2 | 188 | |
0d5cff50 | 189 | static int find_struct_field (const char *, struct type *, int, |
dda83cd7 | 190 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 | 191 | |
d1183b06 | 192 | static int ada_resolve_function (std::vector<struct block_symbol> &, |
dda83cd7 | 193 | struct value **, int, const char *, |
7056f312 | 194 | struct type *, bool); |
4c4b4cd2 | 195 | |
4c4b4cd2 PH |
196 | static int ada_is_direct_array_type (struct type *); |
197 | ||
52ce6436 PH |
198 | static struct value *ada_index_struct_field (int, struct value *, int, |
199 | struct type *); | |
200 | ||
cf608cc4 | 201 | static void add_component_interval (LONGEST, LONGEST, std::vector<LONGEST> &); |
52ce6436 PH |
202 | |
203 | ||
852dff6c | 204 | static struct type *ada_find_any_type (const char *name); |
b5ec771e PA |
205 | |
206 | static symbol_name_matcher_ftype *ada_get_symbol_name_matcher | |
207 | (const lookup_name_info &lookup_name); | |
208 | ||
4c4b4cd2 PH |
209 | \f |
210 | ||
ee01b665 JB |
211 | /* The result of a symbol lookup to be stored in our symbol cache. */ |
212 | ||
213 | struct cache_entry | |
214 | { | |
215 | /* The name used to perform the lookup. */ | |
216 | const char *name; | |
217 | /* The namespace used during the lookup. */ | |
fe978cb0 | 218 | domain_enum domain; |
ee01b665 JB |
219 | /* The symbol returned by the lookup, or NULL if no matching symbol |
220 | was found. */ | |
221 | struct symbol *sym; | |
222 | /* The block where the symbol was found, or NULL if no matching | |
223 | symbol was found. */ | |
224 | const struct block *block; | |
225 | /* A pointer to the next entry with the same hash. */ | |
226 | struct cache_entry *next; | |
227 | }; | |
228 | ||
229 | /* The Ada symbol cache, used to store the result of Ada-mode symbol | |
230 | lookups in the course of executing the user's commands. | |
231 | ||
232 | The cache is implemented using a simple, fixed-sized hash. | |
233 | The size is fixed on the grounds that there are not likely to be | |
234 | all that many symbols looked up during any given session, regardless | |
235 | of the size of the symbol table. If we decide to go to a resizable | |
236 | table, let's just use the stuff from libiberty instead. */ | |
237 | ||
238 | #define HASH_SIZE 1009 | |
239 | ||
240 | struct ada_symbol_cache | |
241 | { | |
242 | /* An obstack used to store the entries in our cache. */ | |
bdcccc56 | 243 | struct auto_obstack cache_space; |
ee01b665 JB |
244 | |
245 | /* The root of the hash table used to implement our symbol cache. */ | |
bdcccc56 | 246 | struct cache_entry *root[HASH_SIZE] {}; |
ee01b665 JB |
247 | }; |
248 | ||
4c4b4cd2 | 249 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
250 | static unsigned int varsize_limit; |
251 | ||
67cb5b2d | 252 | static const char ada_completer_word_break_characters[] = |
4c4b4cd2 PH |
253 | #ifdef VMS |
254 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
255 | #else | |
14f9c5c9 | 256 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 257 | #endif |
14f9c5c9 | 258 | |
4c4b4cd2 | 259 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 260 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 261 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 262 | |
4c4b4cd2 PH |
263 | /* Limit on the number of warnings to raise per expression evaluation. */ |
264 | static int warning_limit = 2; | |
265 | ||
266 | /* Number of warning messages issued; reset to 0 by cleanups after | |
267 | expression evaluation. */ | |
268 | static int warnings_issued = 0; | |
269 | ||
27087b7f | 270 | static const char * const known_runtime_file_name_patterns[] = { |
4c4b4cd2 PH |
271 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL |
272 | }; | |
273 | ||
27087b7f | 274 | static const char * const known_auxiliary_function_name_patterns[] = { |
4c4b4cd2 PH |
275 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL |
276 | }; | |
277 | ||
c6044dd1 JB |
278 | /* Maintenance-related settings for this module. */ |
279 | ||
280 | static struct cmd_list_element *maint_set_ada_cmdlist; | |
281 | static struct cmd_list_element *maint_show_ada_cmdlist; | |
282 | ||
c6044dd1 JB |
283 | /* The "maintenance ada set/show ignore-descriptive-type" value. */ |
284 | ||
491144b5 | 285 | static bool ada_ignore_descriptive_types_p = false; |
c6044dd1 | 286 | |
e802dbe0 JB |
287 | /* Inferior-specific data. */ |
288 | ||
289 | /* Per-inferior data for this module. */ | |
290 | ||
291 | struct ada_inferior_data | |
292 | { | |
293 | /* The ada__tags__type_specific_data type, which is used when decoding | |
294 | tagged types. With older versions of GNAT, this type was directly | |
295 | accessible through a component ("tsd") in the object tag. But this | |
296 | is no longer the case, so we cache it for each inferior. */ | |
f37b313d | 297 | struct type *tsd_type = nullptr; |
3eecfa55 JB |
298 | |
299 | /* The exception_support_info data. This data is used to determine | |
300 | how to implement support for Ada exception catchpoints in a given | |
301 | inferior. */ | |
f37b313d | 302 | const struct exception_support_info *exception_info = nullptr; |
e802dbe0 JB |
303 | }; |
304 | ||
305 | /* Our key to this module's inferior data. */ | |
f37b313d | 306 | static const struct inferior_key<ada_inferior_data> ada_inferior_data; |
e802dbe0 JB |
307 | |
308 | /* Return our inferior data for the given inferior (INF). | |
309 | ||
310 | This function always returns a valid pointer to an allocated | |
311 | ada_inferior_data structure. If INF's inferior data has not | |
312 | been previously set, this functions creates a new one with all | |
313 | fields set to zero, sets INF's inferior to it, and then returns | |
314 | a pointer to that newly allocated ada_inferior_data. */ | |
315 | ||
316 | static struct ada_inferior_data * | |
317 | get_ada_inferior_data (struct inferior *inf) | |
318 | { | |
319 | struct ada_inferior_data *data; | |
320 | ||
f37b313d | 321 | data = ada_inferior_data.get (inf); |
e802dbe0 | 322 | if (data == NULL) |
f37b313d | 323 | data = ada_inferior_data.emplace (inf); |
e802dbe0 JB |
324 | |
325 | return data; | |
326 | } | |
327 | ||
328 | /* Perform all necessary cleanups regarding our module's inferior data | |
329 | that is required after the inferior INF just exited. */ | |
330 | ||
331 | static void | |
332 | ada_inferior_exit (struct inferior *inf) | |
333 | { | |
f37b313d | 334 | ada_inferior_data.clear (inf); |
e802dbe0 JB |
335 | } |
336 | ||
ee01b665 JB |
337 | |
338 | /* program-space-specific data. */ | |
339 | ||
340 | /* This module's per-program-space data. */ | |
341 | struct ada_pspace_data | |
342 | { | |
343 | /* The Ada symbol cache. */ | |
bdcccc56 | 344 | std::unique_ptr<ada_symbol_cache> sym_cache; |
ee01b665 JB |
345 | }; |
346 | ||
347 | /* Key to our per-program-space data. */ | |
f37b313d | 348 | static const struct program_space_key<ada_pspace_data> ada_pspace_data_handle; |
ee01b665 JB |
349 | |
350 | /* Return this module's data for the given program space (PSPACE). | |
351 | If not is found, add a zero'ed one now. | |
352 | ||
353 | This function always returns a valid object. */ | |
354 | ||
355 | static struct ada_pspace_data * | |
356 | get_ada_pspace_data (struct program_space *pspace) | |
357 | { | |
358 | struct ada_pspace_data *data; | |
359 | ||
f37b313d | 360 | data = ada_pspace_data_handle.get (pspace); |
ee01b665 | 361 | if (data == NULL) |
f37b313d | 362 | data = ada_pspace_data_handle.emplace (pspace); |
ee01b665 JB |
363 | |
364 | return data; | |
365 | } | |
366 | ||
dda83cd7 | 367 | /* Utilities */ |
4c4b4cd2 | 368 | |
720d1a40 | 369 | /* If TYPE is a TYPE_CODE_TYPEDEF type, return the target type after |
eed9788b | 370 | all typedef layers have been peeled. Otherwise, return TYPE. |
720d1a40 JB |
371 | |
372 | Normally, we really expect a typedef type to only have 1 typedef layer. | |
373 | In other words, we really expect the target type of a typedef type to be | |
374 | a non-typedef type. This is particularly true for Ada units, because | |
375 | the language does not have a typedef vs not-typedef distinction. | |
376 | In that respect, the Ada compiler has been trying to eliminate as many | |
377 | typedef definitions in the debugging information, since they generally | |
378 | do not bring any extra information (we still use typedef under certain | |
379 | circumstances related mostly to the GNAT encoding). | |
380 | ||
381 | Unfortunately, we have seen situations where the debugging information | |
382 | generated by the compiler leads to such multiple typedef layers. For | |
383 | instance, consider the following example with stabs: | |
384 | ||
385 | .stabs "pck__float_array___XUP:Tt(0,46)=s16P_ARRAY:(0,47)=[...]"[...] | |
386 | .stabs "pck__float_array___XUP:t(0,36)=(0,46)",128,0,6,0 | |
387 | ||
388 | This is an error in the debugging information which causes type | |
389 | pck__float_array___XUP to be defined twice, and the second time, | |
390 | it is defined as a typedef of a typedef. | |
391 | ||
392 | This is on the fringe of legality as far as debugging information is | |
393 | concerned, and certainly unexpected. But it is easy to handle these | |
394 | situations correctly, so we can afford to be lenient in this case. */ | |
395 | ||
396 | static struct type * | |
397 | ada_typedef_target_type (struct type *type) | |
398 | { | |
78134374 | 399 | while (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
400 | type = TYPE_TARGET_TYPE (type); |
401 | return type; | |
402 | } | |
403 | ||
41d27058 JB |
404 | /* Given DECODED_NAME a string holding a symbol name in its |
405 | decoded form (ie using the Ada dotted notation), returns | |
406 | its unqualified name. */ | |
407 | ||
408 | static const char * | |
409 | ada_unqualified_name (const char *decoded_name) | |
410 | { | |
2b0f535a JB |
411 | const char *result; |
412 | ||
413 | /* If the decoded name starts with '<', it means that the encoded | |
414 | name does not follow standard naming conventions, and thus that | |
415 | it is not your typical Ada symbol name. Trying to unqualify it | |
416 | is therefore pointless and possibly erroneous. */ | |
417 | if (decoded_name[0] == '<') | |
418 | return decoded_name; | |
419 | ||
420 | result = strrchr (decoded_name, '.'); | |
41d27058 JB |
421 | if (result != NULL) |
422 | result++; /* Skip the dot... */ | |
423 | else | |
424 | result = decoded_name; | |
425 | ||
426 | return result; | |
427 | } | |
428 | ||
39e7af3e | 429 | /* Return a string starting with '<', followed by STR, and '>'. */ |
41d27058 | 430 | |
39e7af3e | 431 | static std::string |
41d27058 JB |
432 | add_angle_brackets (const char *str) |
433 | { | |
39e7af3e | 434 | return string_printf ("<%s>", str); |
41d27058 | 435 | } |
96d887e8 | 436 | |
14f9c5c9 | 437 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing |
4c4b4cd2 | 438 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
439 | |
440 | static int | |
ebf56fd3 | 441 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
442 | { |
443 | int len = strlen (target); | |
5b4ee69b | 444 | |
d2e4a39e | 445 | return |
4c4b4cd2 PH |
446 | (strncmp (field_name, target, len) == 0 |
447 | && (field_name[len] == '\0' | |
dda83cd7 SM |
448 | || (startswith (field_name + len, "___") |
449 | && strcmp (field_name + strlen (field_name) - 6, | |
450 | "___XVN") != 0))); | |
14f9c5c9 AS |
451 | } |
452 | ||
453 | ||
872c8b51 JB |
454 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
455 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
456 | and return its index. This function also handles fields whose name | |
457 | have ___ suffixes because the compiler sometimes alters their name | |
458 | by adding such a suffix to represent fields with certain constraints. | |
459 | If the field could not be found, return a negative number if | |
460 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
461 | |
462 | int | |
463 | ada_get_field_index (const struct type *type, const char *field_name, | |
dda83cd7 | 464 | int maybe_missing) |
4c4b4cd2 PH |
465 | { |
466 | int fieldno; | |
872c8b51 JB |
467 | struct type *struct_type = check_typedef ((struct type *) type); |
468 | ||
1f704f76 | 469 | for (fieldno = 0; fieldno < struct_type->num_fields (); fieldno++) |
872c8b51 | 470 | if (field_name_match (TYPE_FIELD_NAME (struct_type, fieldno), field_name)) |
4c4b4cd2 PH |
471 | return fieldno; |
472 | ||
473 | if (!maybe_missing) | |
323e0a4a | 474 | error (_("Unable to find field %s in struct %s. Aborting"), |
dda83cd7 | 475 | field_name, struct_type->name ()); |
4c4b4cd2 PH |
476 | |
477 | return -1; | |
478 | } | |
479 | ||
480 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
481 | |
482 | int | |
d2e4a39e | 483 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
484 | { |
485 | if (name == NULL) | |
486 | return 0; | |
d2e4a39e | 487 | else |
14f9c5c9 | 488 | { |
d2e4a39e | 489 | const char *p = strstr (name, "___"); |
5b4ee69b | 490 | |
14f9c5c9 | 491 | if (p == NULL) |
dda83cd7 | 492 | return strlen (name); |
14f9c5c9 | 493 | else |
dda83cd7 | 494 | return p - name; |
14f9c5c9 AS |
495 | } |
496 | } | |
497 | ||
4c4b4cd2 PH |
498 | /* Return non-zero if SUFFIX is a suffix of STR. |
499 | Return zero if STR is null. */ | |
500 | ||
14f9c5c9 | 501 | static int |
d2e4a39e | 502 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
503 | { |
504 | int len1, len2; | |
5b4ee69b | 505 | |
14f9c5c9 AS |
506 | if (str == NULL) |
507 | return 0; | |
508 | len1 = strlen (str); | |
509 | len2 = strlen (suffix); | |
4c4b4cd2 | 510 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
511 | } |
512 | ||
4c4b4cd2 PH |
513 | /* The contents of value VAL, treated as a value of type TYPE. The |
514 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 515 | |
d2e4a39e | 516 | static struct value * |
4c4b4cd2 | 517 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 518 | { |
61ee279c | 519 | type = ada_check_typedef (type); |
df407dfe | 520 | if (value_type (val) == type) |
4c4b4cd2 | 521 | return val; |
d2e4a39e | 522 | else |
14f9c5c9 | 523 | { |
4c4b4cd2 PH |
524 | struct value *result; |
525 | ||
526 | /* Make sure that the object size is not unreasonable before | |
dda83cd7 | 527 | trying to allocate some memory for it. */ |
c1b5a1a6 | 528 | ada_ensure_varsize_limit (type); |
4c4b4cd2 | 529 | |
f73e424f TT |
530 | if (value_optimized_out (val)) |
531 | result = allocate_optimized_out_value (type); | |
532 | else if (value_lazy (val) | |
533 | /* Be careful not to make a lazy not_lval value. */ | |
534 | || (VALUE_LVAL (val) != not_lval | |
535 | && TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val)))) | |
41e8491f JK |
536 | result = allocate_value_lazy (type); |
537 | else | |
538 | { | |
539 | result = allocate_value (type); | |
f73e424f | 540 | value_contents_copy (result, 0, val, 0, TYPE_LENGTH (type)); |
41e8491f | 541 | } |
74bcbdf3 | 542 | set_value_component_location (result, val); |
9bbda503 AC |
543 | set_value_bitsize (result, value_bitsize (val)); |
544 | set_value_bitpos (result, value_bitpos (val)); | |
c408a94f TT |
545 | if (VALUE_LVAL (result) == lval_memory) |
546 | set_value_address (result, value_address (val)); | |
14f9c5c9 AS |
547 | return result; |
548 | } | |
549 | } | |
550 | ||
fc1a4b47 AC |
551 | static const gdb_byte * |
552 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
553 | { |
554 | if (valaddr == NULL) | |
555 | return NULL; | |
556 | else | |
557 | return valaddr + offset; | |
558 | } | |
559 | ||
560 | static CORE_ADDR | |
ebf56fd3 | 561 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
562 | { |
563 | if (address == 0) | |
564 | return 0; | |
d2e4a39e | 565 | else |
14f9c5c9 AS |
566 | return address + offset; |
567 | } | |
568 | ||
4c4b4cd2 PH |
569 | /* Issue a warning (as for the definition of warning in utils.c, but |
570 | with exactly one argument rather than ...), unless the limit on the | |
571 | number of warnings has passed during the evaluation of the current | |
572 | expression. */ | |
a2249542 | 573 | |
77109804 AC |
574 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
575 | provided by "complaint". */ | |
a0b31db1 | 576 | static void lim_warning (const char *format, ...) ATTRIBUTE_PRINTF (1, 2); |
77109804 | 577 | |
14f9c5c9 | 578 | static void |
a2249542 | 579 | lim_warning (const char *format, ...) |
14f9c5c9 | 580 | { |
a2249542 | 581 | va_list args; |
a2249542 | 582 | |
5b4ee69b | 583 | va_start (args, format); |
4c4b4cd2 PH |
584 | warnings_issued += 1; |
585 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
586 | vwarning (format, args); |
587 | ||
588 | va_end (args); | |
4c4b4cd2 PH |
589 | } |
590 | ||
714e53ab PH |
591 | /* Issue an error if the size of an object of type T is unreasonable, |
592 | i.e. if it would be a bad idea to allocate a value of this type in | |
593 | GDB. */ | |
594 | ||
c1b5a1a6 JB |
595 | void |
596 | ada_ensure_varsize_limit (const struct type *type) | |
714e53ab PH |
597 | { |
598 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 599 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
600 | } |
601 | ||
0963b4bd | 602 | /* Maximum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 603 | static LONGEST |
c3e5cd34 | 604 | max_of_size (int size) |
4c4b4cd2 | 605 | { |
76a01679 | 606 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
5b4ee69b | 607 | |
76a01679 | 608 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
609 | } |
610 | ||
0963b4bd | 611 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 612 | static LONGEST |
c3e5cd34 | 613 | min_of_size (int size) |
4c4b4cd2 | 614 | { |
c3e5cd34 | 615 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
616 | } |
617 | ||
0963b4bd | 618 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 619 | static ULONGEST |
c3e5cd34 | 620 | umax_of_size (int size) |
4c4b4cd2 | 621 | { |
76a01679 | 622 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
5b4ee69b | 623 | |
76a01679 | 624 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
625 | } |
626 | ||
0963b4bd | 627 | /* Maximum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
628 | static LONGEST |
629 | max_of_type (struct type *t) | |
4c4b4cd2 | 630 | { |
c6d940a9 | 631 | if (t->is_unsigned ()) |
c3e5cd34 PH |
632 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); |
633 | else | |
634 | return max_of_size (TYPE_LENGTH (t)); | |
635 | } | |
636 | ||
0963b4bd | 637 | /* Minimum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
638 | static LONGEST |
639 | min_of_type (struct type *t) | |
640 | { | |
c6d940a9 | 641 | if (t->is_unsigned ()) |
c3e5cd34 PH |
642 | return 0; |
643 | else | |
644 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
645 | } |
646 | ||
647 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
43bbcdc2 PH |
648 | LONGEST |
649 | ada_discrete_type_high_bound (struct type *type) | |
4c4b4cd2 | 650 | { |
b249d2c2 | 651 | type = resolve_dynamic_type (type, {}, 0); |
78134374 | 652 | switch (type->code ()) |
4c4b4cd2 PH |
653 | { |
654 | case TYPE_CODE_RANGE: | |
d1fd641e SM |
655 | { |
656 | const dynamic_prop &high = type->bounds ()->high; | |
657 | ||
658 | if (high.kind () == PROP_CONST) | |
659 | return high.const_val (); | |
660 | else | |
661 | { | |
662 | gdb_assert (high.kind () == PROP_UNDEFINED); | |
663 | ||
664 | /* This happens when trying to evaluate a type's dynamic bound | |
665 | without a live target. There is nothing relevant for us to | |
666 | return here, so return 0. */ | |
667 | return 0; | |
668 | } | |
669 | } | |
4c4b4cd2 | 670 | case TYPE_CODE_ENUM: |
1f704f76 | 671 | return TYPE_FIELD_ENUMVAL (type, type->num_fields () - 1); |
690cc4eb PH |
672 | case TYPE_CODE_BOOL: |
673 | return 1; | |
674 | case TYPE_CODE_CHAR: | |
76a01679 | 675 | case TYPE_CODE_INT: |
690cc4eb | 676 | return max_of_type (type); |
4c4b4cd2 | 677 | default: |
43bbcdc2 | 678 | error (_("Unexpected type in ada_discrete_type_high_bound.")); |
4c4b4cd2 PH |
679 | } |
680 | } | |
681 | ||
14e75d8e | 682 | /* The smallest value in the domain of TYPE, a discrete type, as an integer. */ |
43bbcdc2 PH |
683 | LONGEST |
684 | ada_discrete_type_low_bound (struct type *type) | |
4c4b4cd2 | 685 | { |
b249d2c2 | 686 | type = resolve_dynamic_type (type, {}, 0); |
78134374 | 687 | switch (type->code ()) |
4c4b4cd2 PH |
688 | { |
689 | case TYPE_CODE_RANGE: | |
d1fd641e SM |
690 | { |
691 | const dynamic_prop &low = type->bounds ()->low; | |
692 | ||
693 | if (low.kind () == PROP_CONST) | |
694 | return low.const_val (); | |
695 | else | |
696 | { | |
697 | gdb_assert (low.kind () == PROP_UNDEFINED); | |
698 | ||
699 | /* This happens when trying to evaluate a type's dynamic bound | |
700 | without a live target. There is nothing relevant for us to | |
701 | return here, so return 0. */ | |
702 | return 0; | |
703 | } | |
704 | } | |
4c4b4cd2 | 705 | case TYPE_CODE_ENUM: |
14e75d8e | 706 | return TYPE_FIELD_ENUMVAL (type, 0); |
690cc4eb PH |
707 | case TYPE_CODE_BOOL: |
708 | return 0; | |
709 | case TYPE_CODE_CHAR: | |
76a01679 | 710 | case TYPE_CODE_INT: |
690cc4eb | 711 | return min_of_type (type); |
4c4b4cd2 | 712 | default: |
43bbcdc2 | 713 | error (_("Unexpected type in ada_discrete_type_low_bound.")); |
4c4b4cd2 PH |
714 | } |
715 | } | |
716 | ||
717 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 718 | non-range scalar type. */ |
4c4b4cd2 PH |
719 | |
720 | static struct type * | |
18af8284 | 721 | get_base_type (struct type *type) |
4c4b4cd2 | 722 | { |
78134374 | 723 | while (type != NULL && type->code () == TYPE_CODE_RANGE) |
4c4b4cd2 | 724 | { |
76a01679 | 725 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
dda83cd7 | 726 | return type; |
4c4b4cd2 PH |
727 | type = TYPE_TARGET_TYPE (type); |
728 | } | |
729 | return type; | |
14f9c5c9 | 730 | } |
41246937 JB |
731 | |
732 | /* Return a decoded version of the given VALUE. This means returning | |
733 | a value whose type is obtained by applying all the GNAT-specific | |
85102364 | 734 | encodings, making the resulting type a static but standard description |
41246937 JB |
735 | of the initial type. */ |
736 | ||
737 | struct value * | |
738 | ada_get_decoded_value (struct value *value) | |
739 | { | |
740 | struct type *type = ada_check_typedef (value_type (value)); | |
741 | ||
742 | if (ada_is_array_descriptor_type (type) | |
743 | || (ada_is_constrained_packed_array_type (type) | |
dda83cd7 | 744 | && type->code () != TYPE_CODE_PTR)) |
41246937 | 745 | { |
78134374 | 746 | if (type->code () == TYPE_CODE_TYPEDEF) /* array access type. */ |
dda83cd7 | 747 | value = ada_coerce_to_simple_array_ptr (value); |
41246937 | 748 | else |
dda83cd7 | 749 | value = ada_coerce_to_simple_array (value); |
41246937 JB |
750 | } |
751 | else | |
752 | value = ada_to_fixed_value (value); | |
753 | ||
754 | return value; | |
755 | } | |
756 | ||
757 | /* Same as ada_get_decoded_value, but with the given TYPE. | |
758 | Because there is no associated actual value for this type, | |
759 | the resulting type might be a best-effort approximation in | |
760 | the case of dynamic types. */ | |
761 | ||
762 | struct type * | |
763 | ada_get_decoded_type (struct type *type) | |
764 | { | |
765 | type = to_static_fixed_type (type); | |
766 | if (ada_is_constrained_packed_array_type (type)) | |
767 | type = ada_coerce_to_simple_array_type (type); | |
768 | return type; | |
769 | } | |
770 | ||
4c4b4cd2 | 771 | \f |
76a01679 | 772 | |
dda83cd7 | 773 | /* Language Selection */ |
14f9c5c9 AS |
774 | |
775 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
ccefe4c4 | 776 | (the main program is in Ada iif the adainit symbol is found). */ |
d2e4a39e | 777 | |
de93309a | 778 | static enum language |
ccefe4c4 | 779 | ada_update_initial_language (enum language lang) |
14f9c5c9 | 780 | { |
cafb3438 | 781 | if (lookup_minimal_symbol ("adainit", NULL, NULL).minsym != NULL) |
4c4b4cd2 | 782 | return language_ada; |
14f9c5c9 AS |
783 | |
784 | return lang; | |
785 | } | |
96d887e8 PH |
786 | |
787 | /* If the main procedure is written in Ada, then return its name. | |
788 | The result is good until the next call. Return NULL if the main | |
789 | procedure doesn't appear to be in Ada. */ | |
790 | ||
791 | char * | |
792 | ada_main_name (void) | |
793 | { | |
3b7344d5 | 794 | struct bound_minimal_symbol msym; |
e83e4e24 | 795 | static gdb::unique_xmalloc_ptr<char> main_program_name; |
6c038f32 | 796 | |
96d887e8 PH |
797 | /* For Ada, the name of the main procedure is stored in a specific |
798 | string constant, generated by the binder. Look for that symbol, | |
799 | extract its address, and then read that string. If we didn't find | |
800 | that string, then most probably the main procedure is not written | |
801 | in Ada. */ | |
802 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
803 | ||
3b7344d5 | 804 | if (msym.minsym != NULL) |
96d887e8 | 805 | { |
66920317 | 806 | CORE_ADDR main_program_name_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
96d887e8 | 807 | if (main_program_name_addr == 0) |
dda83cd7 | 808 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 809 | |
66920317 | 810 | main_program_name = target_read_string (main_program_name_addr, 1024); |
e83e4e24 | 811 | return main_program_name.get (); |
96d887e8 PH |
812 | } |
813 | ||
814 | /* The main procedure doesn't seem to be in Ada. */ | |
815 | return NULL; | |
816 | } | |
14f9c5c9 | 817 | \f |
dda83cd7 | 818 | /* Symbols */ |
d2e4a39e | 819 | |
4c4b4cd2 PH |
820 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
821 | of NULLs. */ | |
14f9c5c9 | 822 | |
d2e4a39e AS |
823 | const struct ada_opname_map ada_opname_table[] = { |
824 | {"Oadd", "\"+\"", BINOP_ADD}, | |
825 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
826 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
827 | {"Odivide", "\"/\"", BINOP_DIV}, | |
828 | {"Omod", "\"mod\"", BINOP_MOD}, | |
829 | {"Orem", "\"rem\"", BINOP_REM}, | |
830 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
831 | {"Olt", "\"<\"", BINOP_LESS}, | |
832 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
833 | {"Ogt", "\">\"", BINOP_GTR}, | |
834 | {"Oge", "\">=\"", BINOP_GEQ}, | |
835 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
836 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
837 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
838 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
839 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
840 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
841 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
842 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
843 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
844 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
845 | {NULL, NULL} | |
14f9c5c9 AS |
846 | }; |
847 | ||
5c4258f4 | 848 | /* The "encoded" form of DECODED, according to GNAT conventions. If |
b5ec771e | 849 | THROW_ERRORS, throw an error if invalid operator name is found. |
5c4258f4 | 850 | Otherwise, return the empty string in that case. */ |
4c4b4cd2 | 851 | |
5c4258f4 | 852 | static std::string |
b5ec771e | 853 | ada_encode_1 (const char *decoded, bool throw_errors) |
14f9c5c9 | 854 | { |
4c4b4cd2 | 855 | if (decoded == NULL) |
5c4258f4 | 856 | return {}; |
14f9c5c9 | 857 | |
5c4258f4 TT |
858 | std::string encoding_buffer; |
859 | for (const char *p = decoded; *p != '\0'; p += 1) | |
14f9c5c9 | 860 | { |
cdc7bb92 | 861 | if (*p == '.') |
5c4258f4 | 862 | encoding_buffer.append ("__"); |
14f9c5c9 | 863 | else if (*p == '"') |
dda83cd7 SM |
864 | { |
865 | const struct ada_opname_map *mapping; | |
866 | ||
867 | for (mapping = ada_opname_table; | |
868 | mapping->encoded != NULL | |
869 | && !startswith (p, mapping->decoded); mapping += 1) | |
870 | ; | |
871 | if (mapping->encoded == NULL) | |
b5ec771e PA |
872 | { |
873 | if (throw_errors) | |
874 | error (_("invalid Ada operator name: %s"), p); | |
875 | else | |
5c4258f4 | 876 | return {}; |
b5ec771e | 877 | } |
5c4258f4 | 878 | encoding_buffer.append (mapping->encoded); |
dda83cd7 SM |
879 | break; |
880 | } | |
d2e4a39e | 881 | else |
5c4258f4 | 882 | encoding_buffer.push_back (*p); |
14f9c5c9 AS |
883 | } |
884 | ||
4c4b4cd2 | 885 | return encoding_buffer; |
14f9c5c9 AS |
886 | } |
887 | ||
5c4258f4 | 888 | /* The "encoded" form of DECODED, according to GNAT conventions. */ |
b5ec771e | 889 | |
5c4258f4 | 890 | std::string |
b5ec771e PA |
891 | ada_encode (const char *decoded) |
892 | { | |
893 | return ada_encode_1 (decoded, true); | |
894 | } | |
895 | ||
14f9c5c9 | 896 | /* Return NAME folded to lower case, or, if surrounded by single |
4c4b4cd2 PH |
897 | quotes, unfolded, but with the quotes stripped away. Result good |
898 | to next call. */ | |
899 | ||
5f9febe0 | 900 | static const char * |
e0802d59 | 901 | ada_fold_name (gdb::string_view name) |
14f9c5c9 | 902 | { |
5f9febe0 | 903 | static std::string fold_storage; |
14f9c5c9 | 904 | |
6a780b67 | 905 | if (!name.empty () && name[0] == '\'') |
01573d73 | 906 | fold_storage = gdb::to_string (name.substr (1, name.size () - 2)); |
14f9c5c9 AS |
907 | else |
908 | { | |
01573d73 | 909 | fold_storage = gdb::to_string (name); |
5f9febe0 TT |
910 | for (int i = 0; i < name.size (); i += 1) |
911 | fold_storage[i] = tolower (fold_storage[i]); | |
14f9c5c9 AS |
912 | } |
913 | ||
5f9febe0 | 914 | return fold_storage.c_str (); |
14f9c5c9 AS |
915 | } |
916 | ||
529cad9c PH |
917 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
918 | ||
919 | static int | |
920 | is_lower_alphanum (const char c) | |
921 | { | |
922 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
923 | } | |
924 | ||
c90092fe JB |
925 | /* ENCODED is the linkage name of a symbol and LEN contains its length. |
926 | This function saves in LEN the length of that same symbol name but | |
927 | without either of these suffixes: | |
29480c32 JB |
928 | . .{DIGIT}+ |
929 | . ${DIGIT}+ | |
930 | . ___{DIGIT}+ | |
931 | . __{DIGIT}+. | |
c90092fe | 932 | |
29480c32 JB |
933 | These are suffixes introduced by the compiler for entities such as |
934 | nested subprogram for instance, in order to avoid name clashes. | |
935 | They do not serve any purpose for the debugger. */ | |
936 | ||
937 | static void | |
938 | ada_remove_trailing_digits (const char *encoded, int *len) | |
939 | { | |
940 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
941 | { | |
942 | int i = *len - 2; | |
5b4ee69b | 943 | |
29480c32 | 944 | while (i > 0 && isdigit (encoded[i])) |
dda83cd7 | 945 | i--; |
29480c32 | 946 | if (i >= 0 && encoded[i] == '.') |
dda83cd7 | 947 | *len = i; |
29480c32 | 948 | else if (i >= 0 && encoded[i] == '$') |
dda83cd7 | 949 | *len = i; |
61012eef | 950 | else if (i >= 2 && startswith (encoded + i - 2, "___")) |
dda83cd7 | 951 | *len = i - 2; |
61012eef | 952 | else if (i >= 1 && startswith (encoded + i - 1, "__")) |
dda83cd7 | 953 | *len = i - 1; |
29480c32 JB |
954 | } |
955 | } | |
956 | ||
957 | /* Remove the suffix introduced by the compiler for protected object | |
958 | subprograms. */ | |
959 | ||
960 | static void | |
961 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
962 | { | |
963 | /* Remove trailing N. */ | |
964 | ||
965 | /* Protected entry subprograms are broken into two | |
966 | separate subprograms: The first one is unprotected, and has | |
967 | a 'N' suffix; the second is the protected version, and has | |
0963b4bd | 968 | the 'P' suffix. The second calls the first one after handling |
29480c32 JB |
969 | the protection. Since the P subprograms are internally generated, |
970 | we leave these names undecoded, giving the user a clue that this | |
971 | entity is internal. */ | |
972 | ||
973 | if (*len > 1 | |
974 | && encoded[*len - 1] == 'N' | |
975 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
976 | *len = *len - 1; | |
977 | } | |
978 | ||
979 | /* If ENCODED follows the GNAT entity encoding conventions, then return | |
980 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
f945dedf | 981 | replaced by ENCODED. */ |
14f9c5c9 | 982 | |
f945dedf | 983 | std::string |
4c4b4cd2 | 984 | ada_decode (const char *encoded) |
14f9c5c9 AS |
985 | { |
986 | int i, j; | |
987 | int len0; | |
d2e4a39e | 988 | const char *p; |
14f9c5c9 | 989 | int at_start_name; |
f945dedf | 990 | std::string decoded; |
d2e4a39e | 991 | |
0d81f350 JG |
992 | /* With function descriptors on PPC64, the value of a symbol named |
993 | ".FN", if it exists, is the entry point of the function "FN". */ | |
994 | if (encoded[0] == '.') | |
995 | encoded += 1; | |
996 | ||
29480c32 JB |
997 | /* The name of the Ada main procedure starts with "_ada_". |
998 | This prefix is not part of the decoded name, so skip this part | |
999 | if we see this prefix. */ | |
61012eef | 1000 | if (startswith (encoded, "_ada_")) |
4c4b4cd2 | 1001 | encoded += 5; |
14f9c5c9 | 1002 | |
29480c32 JB |
1003 | /* If the name starts with '_', then it is not a properly encoded |
1004 | name, so do not attempt to decode it. Similarly, if the name | |
1005 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 1006 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
1007 | goto Suppress; |
1008 | ||
4c4b4cd2 | 1009 | len0 = strlen (encoded); |
4c4b4cd2 | 1010 | |
29480c32 JB |
1011 | ada_remove_trailing_digits (encoded, &len0); |
1012 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 1013 | |
4c4b4cd2 PH |
1014 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
1015 | the suffix is located before the current "end" of ENCODED. We want | |
1016 | to avoid re-matching parts of ENCODED that have previously been | |
1017 | marked as discarded (by decrementing LEN0). */ | |
1018 | p = strstr (encoded, "___"); | |
1019 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
1020 | { |
1021 | if (p[3] == 'X') | |
dda83cd7 | 1022 | len0 = p - encoded; |
14f9c5c9 | 1023 | else |
dda83cd7 | 1024 | goto Suppress; |
14f9c5c9 | 1025 | } |
4c4b4cd2 | 1026 | |
29480c32 JB |
1027 | /* Remove any trailing TKB suffix. It tells us that this symbol |
1028 | is for the body of a task, but that information does not actually | |
1029 | appear in the decoded name. */ | |
1030 | ||
61012eef | 1031 | if (len0 > 3 && startswith (encoded + len0 - 3, "TKB")) |
14f9c5c9 | 1032 | len0 -= 3; |
76a01679 | 1033 | |
a10967fa JB |
1034 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
1035 | from the TKB suffix because it is used for non-anonymous task | |
1036 | bodies. */ | |
1037 | ||
61012eef | 1038 | if (len0 > 2 && startswith (encoded + len0 - 2, "TB")) |
a10967fa JB |
1039 | len0 -= 2; |
1040 | ||
29480c32 JB |
1041 | /* Remove trailing "B" suffixes. */ |
1042 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
1043 | ||
61012eef | 1044 | if (len0 > 1 && startswith (encoded + len0 - 1, "B")) |
14f9c5c9 AS |
1045 | len0 -= 1; |
1046 | ||
4c4b4cd2 | 1047 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 1048 | |
f945dedf | 1049 | decoded.resize (2 * len0 + 1, 'X'); |
14f9c5c9 | 1050 | |
29480c32 JB |
1051 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
1052 | ||
4c4b4cd2 | 1053 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1054 | { |
4c4b4cd2 PH |
1055 | i = len0 - 2; |
1056 | while ((i >= 0 && isdigit (encoded[i])) | |
dda83cd7 SM |
1057 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) |
1058 | i -= 1; | |
4c4b4cd2 | 1059 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') |
dda83cd7 | 1060 | len0 = i - 1; |
4c4b4cd2 | 1061 | else if (encoded[i] == '$') |
dda83cd7 | 1062 | len0 = i; |
d2e4a39e | 1063 | } |
14f9c5c9 | 1064 | |
29480c32 JB |
1065 | /* The first few characters that are not alphabetic are not part |
1066 | of any encoding we use, so we can copy them over verbatim. */ | |
1067 | ||
4c4b4cd2 PH |
1068 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
1069 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
1070 | |
1071 | at_start_name = 1; | |
1072 | while (i < len0) | |
1073 | { | |
29480c32 | 1074 | /* Is this a symbol function? */ |
4c4b4cd2 | 1075 | if (at_start_name && encoded[i] == 'O') |
dda83cd7 SM |
1076 | { |
1077 | int k; | |
1078 | ||
1079 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
1080 | { | |
1081 | int op_len = strlen (ada_opname_table[k].encoded); | |
1082 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, | |
1083 | op_len - 1) == 0) | |
1084 | && !isalnum (encoded[i + op_len])) | |
1085 | { | |
1086 | strcpy (&decoded.front() + j, ada_opname_table[k].decoded); | |
1087 | at_start_name = 0; | |
1088 | i += op_len; | |
1089 | j += strlen (ada_opname_table[k].decoded); | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | if (ada_opname_table[k].encoded != NULL) | |
1094 | continue; | |
1095 | } | |
14f9c5c9 AS |
1096 | at_start_name = 0; |
1097 | ||
529cad9c | 1098 | /* Replace "TK__" with "__", which will eventually be translated |
dda83cd7 | 1099 | into "." (just below). */ |
529cad9c | 1100 | |
61012eef | 1101 | if (i < len0 - 4 && startswith (encoded + i, "TK__")) |
dda83cd7 | 1102 | i += 2; |
529cad9c | 1103 | |
29480c32 | 1104 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
dda83cd7 SM |
1105 | be translated into "." (just below). These are internal names |
1106 | generated for anonymous blocks inside which our symbol is nested. */ | |
29480c32 JB |
1107 | |
1108 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
dda83cd7 SM |
1109 | && encoded [i+2] == 'B' && encoded [i+3] == '_' |
1110 | && isdigit (encoded [i+4])) | |
1111 | { | |
1112 | int k = i + 5; | |
1113 | ||
1114 | while (k < len0 && isdigit (encoded[k])) | |
1115 | k++; /* Skip any extra digit. */ | |
1116 | ||
1117 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1118 | is indeed followed by "__". */ | |
1119 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1120 | i = k; | |
1121 | } | |
29480c32 | 1122 | |
529cad9c PH |
1123 | /* Remove _E{DIGITS}+[sb] */ |
1124 | ||
1125 | /* Just as for protected object subprograms, there are 2 categories | |
dda83cd7 SM |
1126 | of subprograms created by the compiler for each entry. The first |
1127 | one implements the actual entry code, and has a suffix following | |
1128 | the convention above; the second one implements the barrier and | |
1129 | uses the same convention as above, except that the 'E' is replaced | |
1130 | by a 'B'. | |
529cad9c | 1131 | |
dda83cd7 SM |
1132 | Just as above, we do not decode the name of barrier functions |
1133 | to give the user a clue that the code he is debugging has been | |
1134 | internally generated. */ | |
529cad9c PH |
1135 | |
1136 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
dda83cd7 SM |
1137 | && isdigit (encoded[i+2])) |
1138 | { | |
1139 | int k = i + 3; | |
1140 | ||
1141 | while (k < len0 && isdigit (encoded[k])) | |
1142 | k++; | |
1143 | ||
1144 | if (k < len0 | |
1145 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1146 | { | |
1147 | k++; | |
1148 | /* Just as an extra precaution, make sure that if this | |
1149 | suffix is followed by anything else, it is a '_'. | |
1150 | Otherwise, we matched this sequence by accident. */ | |
1151 | if (k == len0 | |
1152 | || (k < len0 && encoded[k] == '_')) | |
1153 | i = k; | |
1154 | } | |
1155 | } | |
529cad9c PH |
1156 | |
1157 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
dda83cd7 | 1158 | the GNAT front-end in protected object subprograms. */ |
529cad9c PH |
1159 | |
1160 | if (i < len0 + 3 | |
dda83cd7 SM |
1161 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') |
1162 | { | |
1163 | /* Backtrack a bit up until we reach either the begining of | |
1164 | the encoded name, or "__". Make sure that we only find | |
1165 | digits or lowercase characters. */ | |
1166 | const char *ptr = encoded + i - 1; | |
1167 | ||
1168 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1169 | ptr--; | |
1170 | if (ptr < encoded | |
1171 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1172 | i++; | |
1173 | } | |
529cad9c | 1174 | |
4c4b4cd2 | 1175 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
dda83cd7 SM |
1176 | { |
1177 | /* This is a X[bn]* sequence not separated from the previous | |
1178 | part of the name with a non-alpha-numeric character (in other | |
1179 | words, immediately following an alpha-numeric character), then | |
1180 | verify that it is placed at the end of the encoded name. If | |
1181 | not, then the encoding is not valid and we should abort the | |
1182 | decoding. Otherwise, just skip it, it is used in body-nested | |
1183 | package names. */ | |
1184 | do | |
1185 | i += 1; | |
1186 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1187 | if (i < len0) | |
1188 | goto Suppress; | |
1189 | } | |
cdc7bb92 | 1190 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
dda83cd7 SM |
1191 | { |
1192 | /* Replace '__' by '.'. */ | |
1193 | decoded[j] = '.'; | |
1194 | at_start_name = 1; | |
1195 | i += 2; | |
1196 | j += 1; | |
1197 | } | |
14f9c5c9 | 1198 | else |
dda83cd7 SM |
1199 | { |
1200 | /* It's a character part of the decoded name, so just copy it | |
1201 | over. */ | |
1202 | decoded[j] = encoded[i]; | |
1203 | i += 1; | |
1204 | j += 1; | |
1205 | } | |
14f9c5c9 | 1206 | } |
f945dedf | 1207 | decoded.resize (j); |
14f9c5c9 | 1208 | |
29480c32 JB |
1209 | /* Decoded names should never contain any uppercase character. |
1210 | Double-check this, and abort the decoding if we find one. */ | |
1211 | ||
f945dedf | 1212 | for (i = 0; i < decoded.length(); ++i) |
4c4b4cd2 | 1213 | if (isupper (decoded[i]) || decoded[i] == ' ') |
14f9c5c9 AS |
1214 | goto Suppress; |
1215 | ||
f945dedf | 1216 | return decoded; |
14f9c5c9 AS |
1217 | |
1218 | Suppress: | |
4c4b4cd2 | 1219 | if (encoded[0] == '<') |
f945dedf | 1220 | decoded = encoded; |
14f9c5c9 | 1221 | else |
f945dedf | 1222 | decoded = '<' + std::string(encoded) + '>'; |
4c4b4cd2 PH |
1223 | return decoded; |
1224 | ||
1225 | } | |
1226 | ||
1227 | /* Table for keeping permanent unique copies of decoded names. Once | |
1228 | allocated, names in this table are never released. While this is a | |
1229 | storage leak, it should not be significant unless there are massive | |
1230 | changes in the set of decoded names in successive versions of a | |
1231 | symbol table loaded during a single session. */ | |
1232 | static struct htab *decoded_names_store; | |
1233 | ||
1234 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1235 | in the language-specific part of GSYMBOL, if it has not been | |
1236 | previously computed. Tries to save the decoded name in the same | |
1237 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1238 | in any case, the decoded symbol has a lifetime at least that of | |
0963b4bd | 1239 | GSYMBOL). |
4c4b4cd2 PH |
1240 | The GSYMBOL parameter is "mutable" in the C++ sense: logically |
1241 | const, but nevertheless modified to a semantically equivalent form | |
0963b4bd | 1242 | when a decoded name is cached in it. */ |
4c4b4cd2 | 1243 | |
45e6c716 | 1244 | const char * |
f85f34ed | 1245 | ada_decode_symbol (const struct general_symbol_info *arg) |
4c4b4cd2 | 1246 | { |
f85f34ed TT |
1247 | struct general_symbol_info *gsymbol = (struct general_symbol_info *) arg; |
1248 | const char **resultp = | |
615b3f62 | 1249 | &gsymbol->language_specific.demangled_name; |
5b4ee69b | 1250 | |
f85f34ed | 1251 | if (!gsymbol->ada_mangled) |
4c4b4cd2 | 1252 | { |
4d4eaa30 | 1253 | std::string decoded = ada_decode (gsymbol->linkage_name ()); |
f85f34ed | 1254 | struct obstack *obstack = gsymbol->language_specific.obstack; |
5b4ee69b | 1255 | |
f85f34ed | 1256 | gsymbol->ada_mangled = 1; |
5b4ee69b | 1257 | |
f85f34ed | 1258 | if (obstack != NULL) |
f945dedf | 1259 | *resultp = obstack_strdup (obstack, decoded.c_str ()); |
f85f34ed | 1260 | else |
dda83cd7 | 1261 | { |
f85f34ed TT |
1262 | /* Sometimes, we can't find a corresponding objfile, in |
1263 | which case, we put the result on the heap. Since we only | |
1264 | decode when needed, we hope this usually does not cause a | |
1265 | significant memory leak (FIXME). */ | |
1266 | ||
dda83cd7 SM |
1267 | char **slot = (char **) htab_find_slot (decoded_names_store, |
1268 | decoded.c_str (), INSERT); | |
5b4ee69b | 1269 | |
dda83cd7 SM |
1270 | if (*slot == NULL) |
1271 | *slot = xstrdup (decoded.c_str ()); | |
1272 | *resultp = *slot; | |
1273 | } | |
4c4b4cd2 | 1274 | } |
14f9c5c9 | 1275 | |
4c4b4cd2 PH |
1276 | return *resultp; |
1277 | } | |
76a01679 | 1278 | |
2c0b251b | 1279 | static char * |
76a01679 | 1280 | ada_la_decode (const char *encoded, int options) |
4c4b4cd2 | 1281 | { |
f945dedf | 1282 | return xstrdup (ada_decode (encoded).c_str ()); |
14f9c5c9 AS |
1283 | } |
1284 | ||
14f9c5c9 | 1285 | \f |
d2e4a39e | 1286 | |
dda83cd7 | 1287 | /* Arrays */ |
14f9c5c9 | 1288 | |
28c85d6c JB |
1289 | /* Assuming that INDEX_DESC_TYPE is an ___XA structure, a structure |
1290 | generated by the GNAT compiler to describe the index type used | |
1291 | for each dimension of an array, check whether it follows the latest | |
1292 | known encoding. If not, fix it up to conform to the latest encoding. | |
1293 | Otherwise, do nothing. This function also does nothing if | |
1294 | INDEX_DESC_TYPE is NULL. | |
1295 | ||
85102364 | 1296 | The GNAT encoding used to describe the array index type evolved a bit. |
28c85d6c JB |
1297 | Initially, the information would be provided through the name of each |
1298 | field of the structure type only, while the type of these fields was | |
1299 | described as unspecified and irrelevant. The debugger was then expected | |
1300 | to perform a global type lookup using the name of that field in order | |
1301 | to get access to the full index type description. Because these global | |
1302 | lookups can be very expensive, the encoding was later enhanced to make | |
1303 | the global lookup unnecessary by defining the field type as being | |
1304 | the full index type description. | |
1305 | ||
1306 | The purpose of this routine is to allow us to support older versions | |
1307 | of the compiler by detecting the use of the older encoding, and by | |
1308 | fixing up the INDEX_DESC_TYPE to follow the new one (at this point, | |
1309 | we essentially replace each field's meaningless type by the associated | |
1310 | index subtype). */ | |
1311 | ||
1312 | void | |
1313 | ada_fixup_array_indexes_type (struct type *index_desc_type) | |
1314 | { | |
1315 | int i; | |
1316 | ||
1317 | if (index_desc_type == NULL) | |
1318 | return; | |
1f704f76 | 1319 | gdb_assert (index_desc_type->num_fields () > 0); |
28c85d6c JB |
1320 | |
1321 | /* Check if INDEX_DESC_TYPE follows the older encoding (it is sufficient | |
1322 | to check one field only, no need to check them all). If not, return | |
1323 | now. | |
1324 | ||
1325 | If our INDEX_DESC_TYPE was generated using the older encoding, | |
1326 | the field type should be a meaningless integer type whose name | |
1327 | is not equal to the field name. */ | |
940da03e SM |
1328 | if (index_desc_type->field (0).type ()->name () != NULL |
1329 | && strcmp (index_desc_type->field (0).type ()->name (), | |
dda83cd7 | 1330 | TYPE_FIELD_NAME (index_desc_type, 0)) == 0) |
28c85d6c JB |
1331 | return; |
1332 | ||
1333 | /* Fixup each field of INDEX_DESC_TYPE. */ | |
1f704f76 | 1334 | for (i = 0; i < index_desc_type->num_fields (); i++) |
28c85d6c | 1335 | { |
0d5cff50 | 1336 | const char *name = TYPE_FIELD_NAME (index_desc_type, i); |
28c85d6c JB |
1337 | struct type *raw_type = ada_check_typedef (ada_find_any_type (name)); |
1338 | ||
1339 | if (raw_type) | |
5d14b6e5 | 1340 | index_desc_type->field (i).set_type (raw_type); |
28c85d6c JB |
1341 | } |
1342 | } | |
1343 | ||
4c4b4cd2 PH |
1344 | /* The desc_* routines return primitive portions of array descriptors |
1345 | (fat pointers). */ | |
14f9c5c9 AS |
1346 | |
1347 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1348 | level of indirection, if needed. */ |
1349 | ||
d2e4a39e AS |
1350 | static struct type * |
1351 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1352 | { |
1353 | if (type == NULL) | |
1354 | return NULL; | |
61ee279c | 1355 | type = ada_check_typedef (type); |
78134374 | 1356 | if (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
1357 | type = ada_typedef_target_type (type); |
1358 | ||
1265e4aa | 1359 | if (type != NULL |
78134374 | 1360 | && (type->code () == TYPE_CODE_PTR |
dda83cd7 | 1361 | || type->code () == TYPE_CODE_REF)) |
61ee279c | 1362 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1363 | else |
1364 | return type; | |
1365 | } | |
1366 | ||
4c4b4cd2 PH |
1367 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1368 | ||
14f9c5c9 | 1369 | static int |
d2e4a39e | 1370 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1371 | { |
d2e4a39e | 1372 | return |
14f9c5c9 AS |
1373 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1374 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1375 | } | |
1376 | ||
4c4b4cd2 PH |
1377 | /* The descriptor type for thin pointer type TYPE. */ |
1378 | ||
d2e4a39e AS |
1379 | static struct type * |
1380 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1381 | { |
d2e4a39e | 1382 | struct type *base_type = desc_base_type (type); |
5b4ee69b | 1383 | |
14f9c5c9 AS |
1384 | if (base_type == NULL) |
1385 | return NULL; | |
1386 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1387 | return base_type; | |
d2e4a39e | 1388 | else |
14f9c5c9 | 1389 | { |
d2e4a39e | 1390 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
5b4ee69b | 1391 | |
14f9c5c9 | 1392 | if (alt_type == NULL) |
dda83cd7 | 1393 | return base_type; |
14f9c5c9 | 1394 | else |
dda83cd7 | 1395 | return alt_type; |
14f9c5c9 AS |
1396 | } |
1397 | } | |
1398 | ||
4c4b4cd2 PH |
1399 | /* A pointer to the array data for thin-pointer value VAL. */ |
1400 | ||
d2e4a39e AS |
1401 | static struct value * |
1402 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1403 | { |
828292f2 | 1404 | struct type *type = ada_check_typedef (value_type (val)); |
556bdfd4 | 1405 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
5b4ee69b | 1406 | |
556bdfd4 UW |
1407 | data_type = lookup_pointer_type (data_type); |
1408 | ||
78134374 | 1409 | if (type->code () == TYPE_CODE_PTR) |
556bdfd4 | 1410 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1411 | else |
42ae5230 | 1412 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1413 | } |
1414 | ||
4c4b4cd2 PH |
1415 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1416 | ||
14f9c5c9 | 1417 | static int |
d2e4a39e | 1418 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1419 | { |
1420 | type = desc_base_type (type); | |
78134374 | 1421 | return (type != NULL && type->code () == TYPE_CODE_STRUCT |
dda83cd7 | 1422 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1423 | } |
1424 | ||
4c4b4cd2 PH |
1425 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1426 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1427 | |
d2e4a39e AS |
1428 | static struct type * |
1429 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1430 | { |
d2e4a39e | 1431 | struct type *r; |
14f9c5c9 AS |
1432 | |
1433 | type = desc_base_type (type); | |
1434 | ||
1435 | if (type == NULL) | |
1436 | return NULL; | |
1437 | else if (is_thin_pntr (type)) | |
1438 | { | |
1439 | type = thin_descriptor_type (type); | |
1440 | if (type == NULL) | |
dda83cd7 | 1441 | return NULL; |
14f9c5c9 AS |
1442 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1443 | if (r != NULL) | |
dda83cd7 | 1444 | return ada_check_typedef (r); |
14f9c5c9 | 1445 | } |
78134374 | 1446 | else if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
1447 | { |
1448 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1449 | if (r != NULL) | |
dda83cd7 | 1450 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1451 | } |
1452 | return NULL; | |
1453 | } | |
1454 | ||
1455 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1456 | one, a pointer to its bounds data. Otherwise NULL. */ |
1457 | ||
d2e4a39e AS |
1458 | static struct value * |
1459 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1460 | { |
df407dfe | 1461 | struct type *type = ada_check_typedef (value_type (arr)); |
5b4ee69b | 1462 | |
d2e4a39e | 1463 | if (is_thin_pntr (type)) |
14f9c5c9 | 1464 | { |
d2e4a39e | 1465 | struct type *bounds_type = |
dda83cd7 | 1466 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1467 | LONGEST addr; |
1468 | ||
4cdfadb1 | 1469 | if (bounds_type == NULL) |
dda83cd7 | 1470 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1471 | |
1472 | /* NOTE: The following calculation is not really kosher, but | |
dda83cd7 SM |
1473 | since desc_type is an XVE-encoded type (and shouldn't be), |
1474 | the correct calculation is a real pain. FIXME (and fix GCC). */ | |
78134374 | 1475 | if (type->code () == TYPE_CODE_PTR) |
dda83cd7 | 1476 | addr = value_as_long (arr); |
d2e4a39e | 1477 | else |
dda83cd7 | 1478 | addr = value_address (arr); |
14f9c5c9 | 1479 | |
d2e4a39e | 1480 | return |
dda83cd7 SM |
1481 | value_from_longest (lookup_pointer_type (bounds_type), |
1482 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1483 | } |
1484 | ||
1485 | else if (is_thick_pntr (type)) | |
05e522ef JB |
1486 | { |
1487 | struct value *p_bounds = value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, | |
1488 | _("Bad GNAT array descriptor")); | |
1489 | struct type *p_bounds_type = value_type (p_bounds); | |
1490 | ||
1491 | if (p_bounds_type | |
78134374 | 1492 | && p_bounds_type->code () == TYPE_CODE_PTR) |
05e522ef JB |
1493 | { |
1494 | struct type *target_type = TYPE_TARGET_TYPE (p_bounds_type); | |
1495 | ||
e46d3488 | 1496 | if (target_type->is_stub ()) |
05e522ef JB |
1497 | p_bounds = value_cast (lookup_pointer_type |
1498 | (ada_check_typedef (target_type)), | |
1499 | p_bounds); | |
1500 | } | |
1501 | else | |
1502 | error (_("Bad GNAT array descriptor")); | |
1503 | ||
1504 | return p_bounds; | |
1505 | } | |
14f9c5c9 AS |
1506 | else |
1507 | return NULL; | |
1508 | } | |
1509 | ||
4c4b4cd2 PH |
1510 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1511 | position of the field containing the address of the bounds data. */ | |
1512 | ||
14f9c5c9 | 1513 | static int |
d2e4a39e | 1514 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1515 | { |
1516 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1517 | } | |
1518 | ||
1519 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1520 | size of the field containing the address of the bounds data. */ |
1521 | ||
14f9c5c9 | 1522 | static int |
d2e4a39e | 1523 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1524 | { |
1525 | type = desc_base_type (type); | |
1526 | ||
d2e4a39e | 1527 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1528 | return TYPE_FIELD_BITSIZE (type, 1); |
1529 | else | |
940da03e | 1530 | return 8 * TYPE_LENGTH (ada_check_typedef (type->field (1).type ())); |
14f9c5c9 AS |
1531 | } |
1532 | ||
4c4b4cd2 | 1533 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1534 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1535 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1536 | data. */ | |
4c4b4cd2 | 1537 | |
d2e4a39e | 1538 | static struct type * |
556bdfd4 | 1539 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1540 | { |
1541 | type = desc_base_type (type); | |
1542 | ||
4c4b4cd2 | 1543 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1544 | if (is_thin_pntr (type)) |
940da03e | 1545 | return desc_base_type (thin_descriptor_type (type)->field (1).type ()); |
14f9c5c9 | 1546 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1547 | { |
1548 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1549 | ||
1550 | if (data_type | |
78134374 | 1551 | && ada_check_typedef (data_type)->code () == TYPE_CODE_PTR) |
05e522ef | 1552 | return ada_check_typedef (TYPE_TARGET_TYPE (data_type)); |
556bdfd4 UW |
1553 | } |
1554 | ||
1555 | return NULL; | |
14f9c5c9 AS |
1556 | } |
1557 | ||
1558 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1559 | its array data. */ | |
4c4b4cd2 | 1560 | |
d2e4a39e AS |
1561 | static struct value * |
1562 | desc_data (struct value *arr) | |
14f9c5c9 | 1563 | { |
df407dfe | 1564 | struct type *type = value_type (arr); |
5b4ee69b | 1565 | |
14f9c5c9 AS |
1566 | if (is_thin_pntr (type)) |
1567 | return thin_data_pntr (arr); | |
1568 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1569 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
dda83cd7 | 1570 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1571 | else |
1572 | return NULL; | |
1573 | } | |
1574 | ||
1575 | ||
1576 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1577 | position of the field containing the address of the data. */ |
1578 | ||
14f9c5c9 | 1579 | static int |
d2e4a39e | 1580 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1581 | { |
1582 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1583 | } | |
1584 | ||
1585 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1586 | size of the field containing the address of the data. */ |
1587 | ||
14f9c5c9 | 1588 | static int |
d2e4a39e | 1589 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1590 | { |
1591 | type = desc_base_type (type); | |
1592 | ||
1593 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1594 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1595 | else |
940da03e | 1596 | return TARGET_CHAR_BIT * TYPE_LENGTH (type->field (0).type ()); |
14f9c5c9 AS |
1597 | } |
1598 | ||
4c4b4cd2 | 1599 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1600 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1601 | bound, if WHICH is 1. The first bound is I=1. */ |
1602 | ||
d2e4a39e AS |
1603 | static struct value * |
1604 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1605 | { |
250106a7 TT |
1606 | char bound_name[20]; |
1607 | xsnprintf (bound_name, sizeof (bound_name), "%cB%d", | |
1608 | which ? 'U' : 'L', i - 1); | |
1609 | return value_struct_elt (&bounds, NULL, bound_name, NULL, | |
dda83cd7 | 1610 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1611 | } |
1612 | ||
1613 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1614 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1615 | bound, if WHICH is 1. The first bound is I=1. */ |
1616 | ||
14f9c5c9 | 1617 | static int |
d2e4a39e | 1618 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1619 | { |
d2e4a39e | 1620 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1621 | } |
1622 | ||
1623 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1624 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1625 | bound, if WHICH is 1. The first bound is I=1. */ |
1626 | ||
76a01679 | 1627 | static int |
d2e4a39e | 1628 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1629 | { |
1630 | type = desc_base_type (type); | |
1631 | ||
d2e4a39e AS |
1632 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1633 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1634 | else | |
940da03e | 1635 | return 8 * TYPE_LENGTH (type->field (2 * i + which - 2).type ()); |
14f9c5c9 AS |
1636 | } |
1637 | ||
1638 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1639 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1640 | ||
d2e4a39e AS |
1641 | static struct type * |
1642 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1643 | { |
1644 | type = desc_base_type (type); | |
1645 | ||
78134374 | 1646 | if (type->code () == TYPE_CODE_STRUCT) |
250106a7 TT |
1647 | { |
1648 | char bound_name[20]; | |
1649 | xsnprintf (bound_name, sizeof (bound_name), "LB%d", i - 1); | |
1650 | return lookup_struct_elt_type (type, bound_name, 1); | |
1651 | } | |
d2e4a39e | 1652 | else |
14f9c5c9 AS |
1653 | return NULL; |
1654 | } | |
1655 | ||
4c4b4cd2 PH |
1656 | /* The number of index positions in the array-bounds type TYPE. |
1657 | Return 0 if TYPE is NULL. */ | |
1658 | ||
14f9c5c9 | 1659 | static int |
d2e4a39e | 1660 | desc_arity (struct type *type) |
14f9c5c9 AS |
1661 | { |
1662 | type = desc_base_type (type); | |
1663 | ||
1664 | if (type != NULL) | |
1f704f76 | 1665 | return type->num_fields () / 2; |
14f9c5c9 AS |
1666 | return 0; |
1667 | } | |
1668 | ||
4c4b4cd2 PH |
1669 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1670 | an array descriptor type (representing an unconstrained array | |
1671 | type). */ | |
1672 | ||
76a01679 JB |
1673 | static int |
1674 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1675 | { |
1676 | if (type == NULL) | |
1677 | return 0; | |
61ee279c | 1678 | type = ada_check_typedef (type); |
78134374 | 1679 | return (type->code () == TYPE_CODE_ARRAY |
dda83cd7 | 1680 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1681 | } |
1682 | ||
52ce6436 | 1683 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
0963b4bd | 1684 | * to one. */ |
52ce6436 | 1685 | |
2c0b251b | 1686 | static int |
52ce6436 PH |
1687 | ada_is_array_type (struct type *type) |
1688 | { | |
78134374 SM |
1689 | while (type != NULL |
1690 | && (type->code () == TYPE_CODE_PTR | |
1691 | || type->code () == TYPE_CODE_REF)) | |
52ce6436 PH |
1692 | type = TYPE_TARGET_TYPE (type); |
1693 | return ada_is_direct_array_type (type); | |
1694 | } | |
1695 | ||
4c4b4cd2 | 1696 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1697 | |
14f9c5c9 | 1698 | int |
4c4b4cd2 | 1699 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1700 | { |
1701 | if (type == NULL) | |
1702 | return 0; | |
61ee279c | 1703 | type = ada_check_typedef (type); |
78134374 SM |
1704 | return (type->code () == TYPE_CODE_ARRAY |
1705 | || (type->code () == TYPE_CODE_PTR | |
1706 | && (ada_check_typedef (TYPE_TARGET_TYPE (type))->code () | |
1707 | == TYPE_CODE_ARRAY))); | |
14f9c5c9 AS |
1708 | } |
1709 | ||
4c4b4cd2 PH |
1710 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1711 | ||
14f9c5c9 | 1712 | int |
4c4b4cd2 | 1713 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1714 | { |
556bdfd4 | 1715 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
1716 | |
1717 | if (type == NULL) | |
1718 | return 0; | |
61ee279c | 1719 | type = ada_check_typedef (type); |
556bdfd4 | 1720 | return (data_type != NULL |
78134374 | 1721 | && data_type->code () == TYPE_CODE_ARRAY |
556bdfd4 | 1722 | && desc_arity (desc_bounds_type (type)) > 0); |
14f9c5c9 AS |
1723 | } |
1724 | ||
1725 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1726 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1727 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1728 | is still needed. */ |
1729 | ||
14f9c5c9 | 1730 | int |
ebf56fd3 | 1731 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1732 | { |
d2e4a39e | 1733 | return |
14f9c5c9 | 1734 | type != NULL |
78134374 | 1735 | && type->code () == TYPE_CODE_STRUCT |
14f9c5c9 | 1736 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL |
dda83cd7 | 1737 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
4c4b4cd2 | 1738 | && !ada_is_array_descriptor_type (type); |
14f9c5c9 AS |
1739 | } |
1740 | ||
1741 | ||
4c4b4cd2 | 1742 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1743 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1744 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1745 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1746 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1747 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1748 | a descriptor. */ |
de93309a SM |
1749 | |
1750 | static struct type * | |
d2e4a39e | 1751 | ada_type_of_array (struct value *arr, int bounds) |
14f9c5c9 | 1752 | { |
ad82864c JB |
1753 | if (ada_is_constrained_packed_array_type (value_type (arr))) |
1754 | return decode_constrained_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1755 | |
df407dfe AC |
1756 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1757 | return value_type (arr); | |
d2e4a39e AS |
1758 | |
1759 | if (!bounds) | |
ad82864c JB |
1760 | { |
1761 | struct type *array_type = | |
1762 | ada_check_typedef (desc_data_target_type (value_type (arr))); | |
1763 | ||
1764 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
1765 | TYPE_FIELD_BITSIZE (array_type, 0) = | |
1766 | decode_packed_array_bitsize (value_type (arr)); | |
1767 | ||
1768 | return array_type; | |
1769 | } | |
14f9c5c9 AS |
1770 | else |
1771 | { | |
d2e4a39e | 1772 | struct type *elt_type; |
14f9c5c9 | 1773 | int arity; |
d2e4a39e | 1774 | struct value *descriptor; |
14f9c5c9 | 1775 | |
df407dfe AC |
1776 | elt_type = ada_array_element_type (value_type (arr), -1); |
1777 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1778 | |
d2e4a39e | 1779 | if (elt_type == NULL || arity == 0) |
dda83cd7 | 1780 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1781 | |
1782 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1783 | if (value_as_long (descriptor) == 0) |
dda83cd7 | 1784 | return NULL; |
d2e4a39e | 1785 | while (arity > 0) |
dda83cd7 SM |
1786 | { |
1787 | struct type *range_type = alloc_type_copy (value_type (arr)); | |
1788 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
1789 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1790 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1791 | ||
1792 | arity -= 1; | |
1793 | create_static_range_type (range_type, value_type (low), | |
0c9c3474 SA |
1794 | longest_to_int (value_as_long (low)), |
1795 | longest_to_int (value_as_long (high))); | |
dda83cd7 | 1796 | elt_type = create_array_type (array_type, elt_type, range_type); |
ad82864c JB |
1797 | |
1798 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
e67ad678 JB |
1799 | { |
1800 | /* We need to store the element packed bitsize, as well as | |
dda83cd7 | 1801 | recompute the array size, because it was previously |
e67ad678 JB |
1802 | computed based on the unpacked element size. */ |
1803 | LONGEST lo = value_as_long (low); | |
1804 | LONGEST hi = value_as_long (high); | |
1805 | ||
1806 | TYPE_FIELD_BITSIZE (elt_type, 0) = | |
1807 | decode_packed_array_bitsize (value_type (arr)); | |
1808 | /* If the array has no element, then the size is already | |
dda83cd7 | 1809 | zero, and does not need to be recomputed. */ |
e67ad678 JB |
1810 | if (lo < hi) |
1811 | { | |
1812 | int array_bitsize = | |
dda83cd7 | 1813 | (hi - lo + 1) * TYPE_FIELD_BITSIZE (elt_type, 0); |
e67ad678 JB |
1814 | |
1815 | TYPE_LENGTH (array_type) = (array_bitsize + 7) / 8; | |
1816 | } | |
1817 | } | |
dda83cd7 | 1818 | } |
14f9c5c9 AS |
1819 | |
1820 | return lookup_pointer_type (elt_type); | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1825 | Otherwise, returns either a standard GDB array with bounds set |
1826 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1827 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1828 | ||
d2e4a39e AS |
1829 | struct value * |
1830 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1831 | { |
df407dfe | 1832 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1833 | { |
d2e4a39e | 1834 | struct type *arrType = ada_type_of_array (arr, 1); |
5b4ee69b | 1835 | |
14f9c5c9 | 1836 | if (arrType == NULL) |
dda83cd7 | 1837 | return NULL; |
14f9c5c9 AS |
1838 | return value_cast (arrType, value_copy (desc_data (arr))); |
1839 | } | |
ad82864c JB |
1840 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
1841 | return decode_constrained_packed_array (arr); | |
14f9c5c9 AS |
1842 | else |
1843 | return arr; | |
1844 | } | |
1845 | ||
1846 | /* If ARR does not represent an array, returns ARR unchanged. | |
1847 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1848 | be ARR itself if it already is in the proper form). */ |
1849 | ||
720d1a40 | 1850 | struct value * |
d2e4a39e | 1851 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1852 | { |
df407dfe | 1853 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1854 | { |
d2e4a39e | 1855 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
5b4ee69b | 1856 | |
14f9c5c9 | 1857 | if (arrVal == NULL) |
dda83cd7 | 1858 | error (_("Bounds unavailable for null array pointer.")); |
c1b5a1a6 | 1859 | ada_ensure_varsize_limit (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1860 | return value_ind (arrVal); |
1861 | } | |
ad82864c JB |
1862 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
1863 | return decode_constrained_packed_array (arr); | |
d2e4a39e | 1864 | else |
14f9c5c9 AS |
1865 | return arr; |
1866 | } | |
1867 | ||
1868 | /* If TYPE represents a GNAT array type, return it translated to an | |
1869 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1870 | packing). For other types, is the identity. */ |
1871 | ||
d2e4a39e AS |
1872 | struct type * |
1873 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1874 | { |
ad82864c JB |
1875 | if (ada_is_constrained_packed_array_type (type)) |
1876 | return decode_constrained_packed_array_type (type); | |
17280b9f UW |
1877 | |
1878 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 1879 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
1880 | |
1881 | return type; | |
14f9c5c9 AS |
1882 | } |
1883 | ||
4c4b4cd2 PH |
1884 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1885 | ||
ad82864c | 1886 | static int |
57567375 | 1887 | ada_is_gnat_encoded_packed_array_type (struct type *type) |
14f9c5c9 AS |
1888 | { |
1889 | if (type == NULL) | |
1890 | return 0; | |
4c4b4cd2 | 1891 | type = desc_base_type (type); |
61ee279c | 1892 | type = ada_check_typedef (type); |
d2e4a39e | 1893 | return |
14f9c5c9 AS |
1894 | ada_type_name (type) != NULL |
1895 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1896 | } | |
1897 | ||
ad82864c JB |
1898 | /* Non-zero iff TYPE represents a standard GNAT constrained |
1899 | packed-array type. */ | |
1900 | ||
1901 | int | |
1902 | ada_is_constrained_packed_array_type (struct type *type) | |
1903 | { | |
57567375 | 1904 | return ada_is_gnat_encoded_packed_array_type (type) |
ad82864c JB |
1905 | && !ada_is_array_descriptor_type (type); |
1906 | } | |
1907 | ||
1908 | /* Non-zero iff TYPE represents an array descriptor for a | |
1909 | unconstrained packed-array type. */ | |
1910 | ||
1911 | static int | |
1912 | ada_is_unconstrained_packed_array_type (struct type *type) | |
1913 | { | |
57567375 TT |
1914 | if (!ada_is_array_descriptor_type (type)) |
1915 | return 0; | |
1916 | ||
1917 | if (ada_is_gnat_encoded_packed_array_type (type)) | |
1918 | return 1; | |
1919 | ||
1920 | /* If we saw GNAT encodings, then the above code is sufficient. | |
1921 | However, with minimal encodings, we will just have a thick | |
1922 | pointer instead. */ | |
1923 | if (is_thick_pntr (type)) | |
1924 | { | |
1925 | type = desc_base_type (type); | |
1926 | /* The structure's first field is a pointer to an array, so this | |
1927 | fetches the array type. */ | |
1928 | type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
1929 | /* Now we can see if the array elements are packed. */ | |
1930 | return TYPE_FIELD_BITSIZE (type, 0) > 0; | |
1931 | } | |
1932 | ||
1933 | return 0; | |
ad82864c JB |
1934 | } |
1935 | ||
c9a28cbe TT |
1936 | /* Return true if TYPE is a (Gnat-encoded) constrained packed array |
1937 | type, or if it is an ordinary (non-Gnat-encoded) packed array. */ | |
1938 | ||
1939 | static bool | |
1940 | ada_is_any_packed_array_type (struct type *type) | |
1941 | { | |
1942 | return (ada_is_constrained_packed_array_type (type) | |
1943 | || (type->code () == TYPE_CODE_ARRAY | |
1944 | && TYPE_FIELD_BITSIZE (type, 0) % 8 != 0)); | |
1945 | } | |
1946 | ||
ad82864c JB |
1947 | /* Given that TYPE encodes a packed array type (constrained or unconstrained), |
1948 | return the size of its elements in bits. */ | |
1949 | ||
1950 | static long | |
1951 | decode_packed_array_bitsize (struct type *type) | |
1952 | { | |
0d5cff50 DE |
1953 | const char *raw_name; |
1954 | const char *tail; | |
ad82864c JB |
1955 | long bits; |
1956 | ||
720d1a40 JB |
1957 | /* Access to arrays implemented as fat pointers are encoded as a typedef |
1958 | of the fat pointer type. We need the name of the fat pointer type | |
1959 | to do the decoding, so strip the typedef layer. */ | |
78134374 | 1960 | if (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
1961 | type = ada_typedef_target_type (type); |
1962 | ||
1963 | raw_name = ada_type_name (ada_check_typedef (type)); | |
ad82864c JB |
1964 | if (!raw_name) |
1965 | raw_name = ada_type_name (desc_base_type (type)); | |
1966 | ||
1967 | if (!raw_name) | |
1968 | return 0; | |
1969 | ||
1970 | tail = strstr (raw_name, "___XP"); | |
57567375 TT |
1971 | if (tail == nullptr) |
1972 | { | |
1973 | gdb_assert (is_thick_pntr (type)); | |
1974 | /* The structure's first field is a pointer to an array, so this | |
1975 | fetches the array type. */ | |
1976 | type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
1977 | /* Now we can see if the array elements are packed. */ | |
1978 | return TYPE_FIELD_BITSIZE (type, 0); | |
1979 | } | |
ad82864c JB |
1980 | |
1981 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) | |
1982 | { | |
1983 | lim_warning | |
1984 | (_("could not understand bit size information on packed array")); | |
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | return bits; | |
1989 | } | |
1990 | ||
14f9c5c9 AS |
1991 | /* Given that TYPE is a standard GDB array type with all bounds filled |
1992 | in, and that the element size of its ultimate scalar constituents | |
1993 | (that is, either its elements, or, if it is an array of arrays, its | |
1994 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1995 | but with the bit sizes of its elements (and those of any | |
1996 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 | 1997 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
4a46959e JB |
1998 | in bits. |
1999 | ||
2000 | Note that, for arrays whose index type has an XA encoding where | |
2001 | a bound references a record discriminant, getting that discriminant, | |
2002 | and therefore the actual value of that bound, is not possible | |
2003 | because none of the given parameters gives us access to the record. | |
2004 | This function assumes that it is OK in the context where it is being | |
2005 | used to return an array whose bounds are still dynamic and where | |
2006 | the length is arbitrary. */ | |
4c4b4cd2 | 2007 | |
d2e4a39e | 2008 | static struct type * |
ad82864c | 2009 | constrained_packed_array_type (struct type *type, long *elt_bits) |
14f9c5c9 | 2010 | { |
d2e4a39e AS |
2011 | struct type *new_elt_type; |
2012 | struct type *new_type; | |
99b1c762 JB |
2013 | struct type *index_type_desc; |
2014 | struct type *index_type; | |
14f9c5c9 AS |
2015 | LONGEST low_bound, high_bound; |
2016 | ||
61ee279c | 2017 | type = ada_check_typedef (type); |
78134374 | 2018 | if (type->code () != TYPE_CODE_ARRAY) |
14f9c5c9 AS |
2019 | return type; |
2020 | ||
99b1c762 JB |
2021 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
2022 | if (index_type_desc) | |
940da03e | 2023 | index_type = to_fixed_range_type (index_type_desc->field (0).type (), |
99b1c762 JB |
2024 | NULL); |
2025 | else | |
3d967001 | 2026 | index_type = type->index_type (); |
99b1c762 | 2027 | |
e9bb382b | 2028 | new_type = alloc_type_copy (type); |
ad82864c JB |
2029 | new_elt_type = |
2030 | constrained_packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), | |
2031 | elt_bits); | |
99b1c762 | 2032 | create_array_type (new_type, new_elt_type, index_type); |
14f9c5c9 | 2033 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
d0e39ea2 | 2034 | new_type->set_name (ada_type_name (type)); |
14f9c5c9 | 2035 | |
78134374 | 2036 | if ((check_typedef (index_type)->code () == TYPE_CODE_RANGE |
4a46959e | 2037 | && is_dynamic_type (check_typedef (index_type))) |
1f8d2881 | 2038 | || !get_discrete_bounds (index_type, &low_bound, &high_bound)) |
14f9c5c9 AS |
2039 | low_bound = high_bound = 0; |
2040 | if (high_bound < low_bound) | |
2041 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 2042 | else |
14f9c5c9 AS |
2043 | { |
2044 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 2045 | TYPE_LENGTH (new_type) = |
dda83cd7 | 2046 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
2047 | } |
2048 | ||
9cdd0d12 | 2049 | new_type->set_is_fixed_instance (true); |
14f9c5c9 AS |
2050 | return new_type; |
2051 | } | |
2052 | ||
ad82864c JB |
2053 | /* The array type encoded by TYPE, where |
2054 | ada_is_constrained_packed_array_type (TYPE). */ | |
4c4b4cd2 | 2055 | |
d2e4a39e | 2056 | static struct type * |
ad82864c | 2057 | decode_constrained_packed_array_type (struct type *type) |
d2e4a39e | 2058 | { |
0d5cff50 | 2059 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
727e3d2e | 2060 | char *name; |
0d5cff50 | 2061 | const char *tail; |
d2e4a39e | 2062 | struct type *shadow_type; |
14f9c5c9 | 2063 | long bits; |
14f9c5c9 | 2064 | |
727e3d2e JB |
2065 | if (!raw_name) |
2066 | raw_name = ada_type_name (desc_base_type (type)); | |
2067 | ||
2068 | if (!raw_name) | |
2069 | return NULL; | |
2070 | ||
2071 | name = (char *) alloca (strlen (raw_name) + 1); | |
2072 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
2073 | type = desc_base_type (type); |
2074 | ||
14f9c5c9 AS |
2075 | memcpy (name, raw_name, tail - raw_name); |
2076 | name[tail - raw_name] = '\000'; | |
2077 | ||
b4ba55a1 JB |
2078 | shadow_type = ada_find_parallel_type_with_name (type, name); |
2079 | ||
2080 | if (shadow_type == NULL) | |
14f9c5c9 | 2081 | { |
323e0a4a | 2082 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
2083 | return NULL; |
2084 | } | |
f168693b | 2085 | shadow_type = check_typedef (shadow_type); |
14f9c5c9 | 2086 | |
78134374 | 2087 | if (shadow_type->code () != TYPE_CODE_ARRAY) |
14f9c5c9 | 2088 | { |
0963b4bd MS |
2089 | lim_warning (_("could not understand bounds " |
2090 | "information on packed array")); | |
14f9c5c9 AS |
2091 | return NULL; |
2092 | } | |
d2e4a39e | 2093 | |
ad82864c JB |
2094 | bits = decode_packed_array_bitsize (type); |
2095 | return constrained_packed_array_type (shadow_type, &bits); | |
14f9c5c9 AS |
2096 | } |
2097 | ||
a7400e44 TT |
2098 | /* Helper function for decode_constrained_packed_array. Set the field |
2099 | bitsize on a series of packed arrays. Returns the number of | |
2100 | elements in TYPE. */ | |
2101 | ||
2102 | static LONGEST | |
2103 | recursively_update_array_bitsize (struct type *type) | |
2104 | { | |
2105 | gdb_assert (type->code () == TYPE_CODE_ARRAY); | |
2106 | ||
2107 | LONGEST low, high; | |
1f8d2881 | 2108 | if (!get_discrete_bounds (type->index_type (), &low, &high) |
a7400e44 TT |
2109 | || low > high) |
2110 | return 0; | |
2111 | LONGEST our_len = high - low + 1; | |
2112 | ||
2113 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
2114 | if (elt_type->code () == TYPE_CODE_ARRAY) | |
2115 | { | |
2116 | LONGEST elt_len = recursively_update_array_bitsize (elt_type); | |
2117 | LONGEST elt_bitsize = elt_len * TYPE_FIELD_BITSIZE (elt_type, 0); | |
2118 | TYPE_FIELD_BITSIZE (type, 0) = elt_bitsize; | |
2119 | ||
2120 | TYPE_LENGTH (type) = ((our_len * elt_bitsize + HOST_CHAR_BIT - 1) | |
2121 | / HOST_CHAR_BIT); | |
2122 | } | |
2123 | ||
2124 | return our_len; | |
2125 | } | |
2126 | ||
ad82864c JB |
2127 | /* Given that ARR is a struct value *indicating a GNAT constrained packed |
2128 | array, returns a simple array that denotes that array. Its type is a | |
14f9c5c9 AS |
2129 | standard GDB array type except that the BITSIZEs of the array |
2130 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 2131 | type length is set appropriately. */ |
14f9c5c9 | 2132 | |
d2e4a39e | 2133 | static struct value * |
ad82864c | 2134 | decode_constrained_packed_array (struct value *arr) |
14f9c5c9 | 2135 | { |
4c4b4cd2 | 2136 | struct type *type; |
14f9c5c9 | 2137 | |
11aa919a PMR |
2138 | /* If our value is a pointer, then dereference it. Likewise if |
2139 | the value is a reference. Make sure that this operation does not | |
2140 | cause the target type to be fixed, as this would indirectly cause | |
2141 | this array to be decoded. The rest of the routine assumes that | |
2142 | the array hasn't been decoded yet, so we use the basic "coerce_ref" | |
2143 | and "value_ind" routines to perform the dereferencing, as opposed | |
2144 | to using "ada_coerce_ref" or "ada_value_ind". */ | |
2145 | arr = coerce_ref (arr); | |
78134374 | 2146 | if (ada_check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
284614f0 | 2147 | arr = value_ind (arr); |
4c4b4cd2 | 2148 | |
ad82864c | 2149 | type = decode_constrained_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
2150 | if (type == NULL) |
2151 | { | |
323e0a4a | 2152 | error (_("can't unpack array")); |
14f9c5c9 AS |
2153 | return NULL; |
2154 | } | |
61ee279c | 2155 | |
a7400e44 TT |
2156 | /* Decoding the packed array type could not correctly set the field |
2157 | bitsizes for any dimension except the innermost, because the | |
2158 | bounds may be variable and were not passed to that function. So, | |
2159 | we further resolve the array bounds here and then update the | |
2160 | sizes. */ | |
2161 | const gdb_byte *valaddr = value_contents_for_printing (arr); | |
2162 | CORE_ADDR address = value_address (arr); | |
2163 | gdb::array_view<const gdb_byte> view | |
2164 | = gdb::make_array_view (valaddr, TYPE_LENGTH (type)); | |
2165 | type = resolve_dynamic_type (type, view, address); | |
2166 | recursively_update_array_bitsize (type); | |
2167 | ||
d5a22e77 | 2168 | if (type_byte_order (value_type (arr)) == BFD_ENDIAN_BIG |
32c9a795 | 2169 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
2170 | { |
2171 | /* This is a (right-justified) modular type representing a packed | |
2172 | array with no wrapper. In order to interpret the value through | |
2173 | the (left-justified) packed array type we just built, we must | |
2174 | first left-justify it. */ | |
2175 | int bit_size, bit_pos; | |
2176 | ULONGEST mod; | |
2177 | ||
df407dfe | 2178 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
2179 | bit_size = 0; |
2180 | while (mod > 0) | |
2181 | { | |
2182 | bit_size += 1; | |
2183 | mod >>= 1; | |
2184 | } | |
df407dfe | 2185 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
2186 | arr = ada_value_primitive_packed_val (arr, NULL, |
2187 | bit_pos / HOST_CHAR_BIT, | |
2188 | bit_pos % HOST_CHAR_BIT, | |
2189 | bit_size, | |
2190 | type); | |
2191 | } | |
2192 | ||
4c4b4cd2 | 2193 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
2194 | } |
2195 | ||
2196 | ||
2197 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 2198 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 2199 | |
d2e4a39e AS |
2200 | static struct value * |
2201 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2202 | { |
2203 | int i; | |
2204 | int bits, elt_off, bit_off; | |
2205 | long elt_total_bit_offset; | |
d2e4a39e AS |
2206 | struct type *elt_type; |
2207 | struct value *v; | |
14f9c5c9 AS |
2208 | |
2209 | bits = 0; | |
2210 | elt_total_bit_offset = 0; | |
df407dfe | 2211 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 2212 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 2213 | { |
78134374 | 2214 | if (elt_type->code () != TYPE_CODE_ARRAY |
dda83cd7 SM |
2215 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
2216 | error | |
2217 | (_("attempt to do packed indexing of " | |
0963b4bd | 2218 | "something other than a packed array")); |
14f9c5c9 | 2219 | else |
dda83cd7 SM |
2220 | { |
2221 | struct type *range_type = elt_type->index_type (); | |
2222 | LONGEST lowerbound, upperbound; | |
2223 | LONGEST idx; | |
2224 | ||
1f8d2881 | 2225 | if (!get_discrete_bounds (range_type, &lowerbound, &upperbound)) |
dda83cd7 SM |
2226 | { |
2227 | lim_warning (_("don't know bounds of array")); | |
2228 | lowerbound = upperbound = 0; | |
2229 | } | |
2230 | ||
2231 | idx = pos_atr (ind[i]); | |
2232 | if (idx < lowerbound || idx > upperbound) | |
2233 | lim_warning (_("packed array index %ld out of bounds"), | |
0963b4bd | 2234 | (long) idx); |
dda83cd7 SM |
2235 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
2236 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
2237 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
2238 | } | |
14f9c5c9 AS |
2239 | } |
2240 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
2241 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
2242 | |
2243 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
dda83cd7 | 2244 | bits, elt_type); |
14f9c5c9 AS |
2245 | return v; |
2246 | } | |
2247 | ||
4c4b4cd2 | 2248 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
2249 | |
2250 | static int | |
d2e4a39e | 2251 | has_negatives (struct type *type) |
14f9c5c9 | 2252 | { |
78134374 | 2253 | switch (type->code ()) |
d2e4a39e AS |
2254 | { |
2255 | default: | |
2256 | return 0; | |
2257 | case TYPE_CODE_INT: | |
c6d940a9 | 2258 | return !type->is_unsigned (); |
d2e4a39e | 2259 | case TYPE_CODE_RANGE: |
5537ddd0 | 2260 | return type->bounds ()->low.const_val () - type->bounds ()->bias < 0; |
d2e4a39e | 2261 | } |
14f9c5c9 | 2262 | } |
d2e4a39e | 2263 | |
f93fca70 | 2264 | /* With SRC being a buffer containing BIT_SIZE bits of data at BIT_OFFSET, |
5b639dea | 2265 | unpack that data into UNPACKED. UNPACKED_LEN is the size in bytes of |
f93fca70 | 2266 | the unpacked buffer. |
14f9c5c9 | 2267 | |
5b639dea JB |
2268 | The size of the unpacked buffer (UNPACKED_LEN) is expected to be large |
2269 | enough to contain at least BIT_OFFSET bits. If not, an error is raised. | |
2270 | ||
f93fca70 JB |
2271 | IS_BIG_ENDIAN is nonzero if the data is stored in big endian mode, |
2272 | zero otherwise. | |
14f9c5c9 | 2273 | |
f93fca70 | 2274 | IS_SIGNED_TYPE is nonzero if the data corresponds to a signed type. |
a1c95e6b | 2275 | |
f93fca70 JB |
2276 | IS_SCALAR is nonzero if the data corresponds to a signed type. */ |
2277 | ||
2278 | static void | |
2279 | ada_unpack_from_contents (const gdb_byte *src, int bit_offset, int bit_size, | |
2280 | gdb_byte *unpacked, int unpacked_len, | |
2281 | int is_big_endian, int is_signed_type, | |
2282 | int is_scalar) | |
2283 | { | |
a1c95e6b JB |
2284 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
2285 | int src_idx; /* Index into the source area */ | |
2286 | int src_bytes_left; /* Number of source bytes left to process. */ | |
2287 | int srcBitsLeft; /* Number of source bits left to move */ | |
2288 | int unusedLS; /* Number of bits in next significant | |
dda83cd7 | 2289 | byte of source that are unused */ |
a1c95e6b | 2290 | |
a1c95e6b JB |
2291 | int unpacked_idx; /* Index into the unpacked buffer */ |
2292 | int unpacked_bytes_left; /* Number of bytes left to set in unpacked. */ | |
2293 | ||
4c4b4cd2 | 2294 | unsigned long accum; /* Staging area for bits being transferred */ |
a1c95e6b | 2295 | int accumSize; /* Number of meaningful bits in accum */ |
14f9c5c9 | 2296 | unsigned char sign; |
a1c95e6b | 2297 | |
4c4b4cd2 PH |
2298 | /* Transmit bytes from least to most significant; delta is the direction |
2299 | the indices move. */ | |
f93fca70 | 2300 | int delta = is_big_endian ? -1 : 1; |
14f9c5c9 | 2301 | |
5b639dea JB |
2302 | /* Make sure that unpacked is large enough to receive the BIT_SIZE |
2303 | bits from SRC. .*/ | |
2304 | if ((bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT > unpacked_len) | |
2305 | error (_("Cannot unpack %d bits into buffer of %d bytes"), | |
2306 | bit_size, unpacked_len); | |
2307 | ||
14f9c5c9 | 2308 | srcBitsLeft = bit_size; |
086ca51f | 2309 | src_bytes_left = src_len; |
f93fca70 | 2310 | unpacked_bytes_left = unpacked_len; |
14f9c5c9 | 2311 | sign = 0; |
f93fca70 JB |
2312 | |
2313 | if (is_big_endian) | |
14f9c5c9 | 2314 | { |
086ca51f | 2315 | src_idx = src_len - 1; |
f93fca70 JB |
2316 | if (is_signed_type |
2317 | && ((src[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
dda83cd7 | 2318 | sign = ~0; |
d2e4a39e AS |
2319 | |
2320 | unusedLS = | |
dda83cd7 SM |
2321 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2322 | % HOST_CHAR_BIT; | |
14f9c5c9 | 2323 | |
f93fca70 JB |
2324 | if (is_scalar) |
2325 | { | |
dda83cd7 SM |
2326 | accumSize = 0; |
2327 | unpacked_idx = unpacked_len - 1; | |
f93fca70 JB |
2328 | } |
2329 | else | |
2330 | { | |
dda83cd7 SM |
2331 | /* Non-scalar values must be aligned at a byte boundary... */ |
2332 | accumSize = | |
2333 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2334 | /* ... And are placed at the beginning (most-significant) bytes | |
2335 | of the target. */ | |
2336 | unpacked_idx = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; | |
2337 | unpacked_bytes_left = unpacked_idx + 1; | |
f93fca70 | 2338 | } |
14f9c5c9 | 2339 | } |
d2e4a39e | 2340 | else |
14f9c5c9 AS |
2341 | { |
2342 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2343 | ||
086ca51f | 2344 | src_idx = unpacked_idx = 0; |
14f9c5c9 AS |
2345 | unusedLS = bit_offset; |
2346 | accumSize = 0; | |
2347 | ||
f93fca70 | 2348 | if (is_signed_type && (src[src_len - 1] & (1 << sign_bit_offset))) |
dda83cd7 | 2349 | sign = ~0; |
14f9c5c9 | 2350 | } |
d2e4a39e | 2351 | |
14f9c5c9 | 2352 | accum = 0; |
086ca51f | 2353 | while (src_bytes_left > 0) |
14f9c5c9 AS |
2354 | { |
2355 | /* Mask for removing bits of the next source byte that are not | |
dda83cd7 | 2356 | part of the value. */ |
d2e4a39e | 2357 | unsigned int unusedMSMask = |
dda83cd7 SM |
2358 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2359 | 1; | |
4c4b4cd2 | 2360 | /* Sign-extend bits for this byte. */ |
14f9c5c9 | 2361 | unsigned int signMask = sign & ~unusedMSMask; |
5b4ee69b | 2362 | |
d2e4a39e | 2363 | accum |= |
dda83cd7 | 2364 | (((src[src_idx] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2365 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2366 | if (accumSize >= HOST_CHAR_BIT) |
dda83cd7 SM |
2367 | { |
2368 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); | |
2369 | accumSize -= HOST_CHAR_BIT; | |
2370 | accum >>= HOST_CHAR_BIT; | |
2371 | unpacked_bytes_left -= 1; | |
2372 | unpacked_idx += delta; | |
2373 | } | |
14f9c5c9 AS |
2374 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2375 | unusedLS = 0; | |
086ca51f JB |
2376 | src_bytes_left -= 1; |
2377 | src_idx += delta; | |
14f9c5c9 | 2378 | } |
086ca51f | 2379 | while (unpacked_bytes_left > 0) |
14f9c5c9 AS |
2380 | { |
2381 | accum |= sign << accumSize; | |
db297a65 | 2382 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
14f9c5c9 | 2383 | accumSize -= HOST_CHAR_BIT; |
9cd4d857 JB |
2384 | if (accumSize < 0) |
2385 | accumSize = 0; | |
14f9c5c9 | 2386 | accum >>= HOST_CHAR_BIT; |
086ca51f JB |
2387 | unpacked_bytes_left -= 1; |
2388 | unpacked_idx += delta; | |
14f9c5c9 | 2389 | } |
f93fca70 JB |
2390 | } |
2391 | ||
2392 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2393 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2394 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
2395 | assigning through the result will set the field fetched from. | |
2396 | VALADDR is ignored unless OBJ is NULL, in which case, | |
2397 | VALADDR+OFFSET must address the start of storage containing the | |
2398 | packed value. The value returned in this case is never an lval. | |
2399 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
2400 | ||
2401 | struct value * | |
2402 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, | |
2403 | long offset, int bit_offset, int bit_size, | |
dda83cd7 | 2404 | struct type *type) |
f93fca70 JB |
2405 | { |
2406 | struct value *v; | |
bfb1c796 | 2407 | const gdb_byte *src; /* First byte containing data to unpack */ |
f93fca70 | 2408 | gdb_byte *unpacked; |
220475ed | 2409 | const int is_scalar = is_scalar_type (type); |
d5a22e77 | 2410 | const int is_big_endian = type_byte_order (type) == BFD_ENDIAN_BIG; |
d5722aa2 | 2411 | gdb::byte_vector staging; |
f93fca70 JB |
2412 | |
2413 | type = ada_check_typedef (type); | |
2414 | ||
d0a9e810 | 2415 | if (obj == NULL) |
bfb1c796 | 2416 | src = valaddr + offset; |
d0a9e810 | 2417 | else |
bfb1c796 | 2418 | src = value_contents (obj) + offset; |
d0a9e810 JB |
2419 | |
2420 | if (is_dynamic_type (type)) | |
2421 | { | |
2422 | /* The length of TYPE might by dynamic, so we need to resolve | |
2423 | TYPE in order to know its actual size, which we then use | |
2424 | to create the contents buffer of the value we return. | |
2425 | The difficulty is that the data containing our object is | |
2426 | packed, and therefore maybe not at a byte boundary. So, what | |
2427 | we do, is unpack the data into a byte-aligned buffer, and then | |
2428 | use that buffer as our object's value for resolving the type. */ | |
d5722aa2 PA |
2429 | int staging_len = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
2430 | staging.resize (staging_len); | |
d0a9e810 JB |
2431 | |
2432 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
dda83cd7 | 2433 | staging.data (), staging.size (), |
d0a9e810 JB |
2434 | is_big_endian, has_negatives (type), |
2435 | is_scalar); | |
b249d2c2 | 2436 | type = resolve_dynamic_type (type, staging, 0); |
0cafa88c JB |
2437 | if (TYPE_LENGTH (type) < (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT) |
2438 | { | |
2439 | /* This happens when the length of the object is dynamic, | |
2440 | and is actually smaller than the space reserved for it. | |
2441 | For instance, in an array of variant records, the bit_size | |
2442 | we're given is the array stride, which is constant and | |
2443 | normally equal to the maximum size of its element. | |
2444 | But, in reality, each element only actually spans a portion | |
2445 | of that stride. */ | |
2446 | bit_size = TYPE_LENGTH (type) * HOST_CHAR_BIT; | |
2447 | } | |
d0a9e810 JB |
2448 | } |
2449 | ||
f93fca70 JB |
2450 | if (obj == NULL) |
2451 | { | |
2452 | v = allocate_value (type); | |
bfb1c796 | 2453 | src = valaddr + offset; |
f93fca70 JB |
2454 | } |
2455 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) | |
2456 | { | |
0cafa88c | 2457 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
bfb1c796 | 2458 | gdb_byte *buf; |
0cafa88c | 2459 | |
f93fca70 | 2460 | v = value_at (type, value_address (obj) + offset); |
bfb1c796 PA |
2461 | buf = (gdb_byte *) alloca (src_len); |
2462 | read_memory (value_address (v), buf, src_len); | |
2463 | src = buf; | |
f93fca70 JB |
2464 | } |
2465 | else | |
2466 | { | |
2467 | v = allocate_value (type); | |
bfb1c796 | 2468 | src = value_contents (obj) + offset; |
f93fca70 JB |
2469 | } |
2470 | ||
2471 | if (obj != NULL) | |
2472 | { | |
2473 | long new_offset = offset; | |
2474 | ||
2475 | set_value_component_location (v, obj); | |
2476 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); | |
2477 | set_value_bitsize (v, bit_size); | |
2478 | if (value_bitpos (v) >= HOST_CHAR_BIT) | |
dda83cd7 | 2479 | { |
f93fca70 | 2480 | ++new_offset; |
dda83cd7 SM |
2481 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
2482 | } | |
f93fca70 JB |
2483 | set_value_offset (v, new_offset); |
2484 | ||
2485 | /* Also set the parent value. This is needed when trying to | |
2486 | assign a new value (in inferior memory). */ | |
2487 | set_value_parent (v, obj); | |
2488 | } | |
2489 | else | |
2490 | set_value_bitsize (v, bit_size); | |
bfb1c796 | 2491 | unpacked = value_contents_writeable (v); |
f93fca70 JB |
2492 | |
2493 | if (bit_size == 0) | |
2494 | { | |
2495 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2496 | return v; | |
2497 | } | |
2498 | ||
d5722aa2 | 2499 | if (staging.size () == TYPE_LENGTH (type)) |
f93fca70 | 2500 | { |
d0a9e810 JB |
2501 | /* Small short-cut: If we've unpacked the data into a buffer |
2502 | of the same size as TYPE's length, then we can reuse that, | |
2503 | instead of doing the unpacking again. */ | |
d5722aa2 | 2504 | memcpy (unpacked, staging.data (), staging.size ()); |
f93fca70 | 2505 | } |
d0a9e810 JB |
2506 | else |
2507 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
2508 | unpacked, TYPE_LENGTH (type), | |
2509 | is_big_endian, has_negatives (type), is_scalar); | |
f93fca70 | 2510 | |
14f9c5c9 AS |
2511 | return v; |
2512 | } | |
d2e4a39e | 2513 | |
14f9c5c9 AS |
2514 | /* Store the contents of FROMVAL into the location of TOVAL. |
2515 | Return a new value with the location of TOVAL and contents of | |
2516 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2517 | floating-point or non-scalar types. */ |
14f9c5c9 | 2518 | |
d2e4a39e AS |
2519 | static struct value * |
2520 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2521 | { |
df407dfe AC |
2522 | struct type *type = value_type (toval); |
2523 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2524 | |
52ce6436 PH |
2525 | toval = ada_coerce_ref (toval); |
2526 | fromval = ada_coerce_ref (fromval); | |
2527 | ||
2528 | if (ada_is_direct_array_type (value_type (toval))) | |
2529 | toval = ada_coerce_to_simple_array (toval); | |
2530 | if (ada_is_direct_array_type (value_type (fromval))) | |
2531 | fromval = ada_coerce_to_simple_array (fromval); | |
2532 | ||
88e3b34b | 2533 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2534 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2535 | |
d2e4a39e | 2536 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2537 | && bits > 0 |
78134374 | 2538 | && (type->code () == TYPE_CODE_FLT |
dda83cd7 | 2539 | || type->code () == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2540 | { |
df407dfe AC |
2541 | int len = (value_bitpos (toval) |
2542 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2543 | int from_size; |
224c3ddb | 2544 | gdb_byte *buffer = (gdb_byte *) alloca (len); |
d2e4a39e | 2545 | struct value *val; |
42ae5230 | 2546 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 | 2547 | |
78134374 | 2548 | if (type->code () == TYPE_CODE_FLT) |
dda83cd7 | 2549 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2550 | |
52ce6436 | 2551 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2552 | from_size = value_bitsize (fromval); |
2553 | if (from_size == 0) | |
2554 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
d48e62f4 | 2555 | |
d5a22e77 | 2556 | const int is_big_endian = type_byte_order (type) == BFD_ENDIAN_BIG; |
d48e62f4 TT |
2557 | ULONGEST from_offset = 0; |
2558 | if (is_big_endian && is_scalar_type (value_type (fromval))) | |
2559 | from_offset = from_size - bits; | |
2560 | copy_bitwise (buffer, value_bitpos (toval), | |
2561 | value_contents (fromval), from_offset, | |
2562 | bits, is_big_endian); | |
972daa01 | 2563 | write_memory_with_notification (to_addr, buffer, len); |
8cebebb9 | 2564 | |
14f9c5c9 | 2565 | val = value_copy (toval); |
0fd88904 | 2566 | memcpy (value_contents_raw (val), value_contents (fromval), |
dda83cd7 | 2567 | TYPE_LENGTH (type)); |
04624583 | 2568 | deprecated_set_value_type (val, type); |
d2e4a39e | 2569 | |
14f9c5c9 AS |
2570 | return val; |
2571 | } | |
2572 | ||
2573 | return value_assign (toval, fromval); | |
2574 | } | |
2575 | ||
2576 | ||
7c512744 JB |
2577 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2578 | CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2579 | CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2580 | COMPONENT, and not the inferior's memory. The current contents | |
2581 | of COMPONENT are ignored. | |
2582 | ||
2583 | Although not part of the initial design, this function also works | |
2584 | when CONTAINER and COMPONENT are not_lval's: it works as if CONTAINER | |
2585 | had a null address, and COMPONENT had an address which is equal to | |
2586 | its offset inside CONTAINER. */ | |
2587 | ||
52ce6436 PH |
2588 | static void |
2589 | value_assign_to_component (struct value *container, struct value *component, | |
2590 | struct value *val) | |
2591 | { | |
2592 | LONGEST offset_in_container = | |
42ae5230 | 2593 | (LONGEST) (value_address (component) - value_address (container)); |
7c512744 | 2594 | int bit_offset_in_container = |
52ce6436 PH |
2595 | value_bitpos (component) - value_bitpos (container); |
2596 | int bits; | |
7c512744 | 2597 | |
52ce6436 PH |
2598 | val = value_cast (value_type (component), val); |
2599 | ||
2600 | if (value_bitsize (component) == 0) | |
2601 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2602 | else | |
2603 | bits = value_bitsize (component); | |
2604 | ||
d5a22e77 | 2605 | if (type_byte_order (value_type (container)) == BFD_ENDIAN_BIG) |
2a62dfa9 JB |
2606 | { |
2607 | int src_offset; | |
2608 | ||
2609 | if (is_scalar_type (check_typedef (value_type (component)))) | |
dda83cd7 | 2610 | src_offset |
2a62dfa9 JB |
2611 | = TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits; |
2612 | else | |
2613 | src_offset = 0; | |
a99bc3d2 JB |
2614 | copy_bitwise (value_contents_writeable (container) + offset_in_container, |
2615 | value_bitpos (container) + bit_offset_in_container, | |
2616 | value_contents (val), src_offset, bits, 1); | |
2a62dfa9 | 2617 | } |
52ce6436 | 2618 | else |
a99bc3d2 JB |
2619 | copy_bitwise (value_contents_writeable (container) + offset_in_container, |
2620 | value_bitpos (container) + bit_offset_in_container, | |
2621 | value_contents (val), 0, bits, 0); | |
7c512744 JB |
2622 | } |
2623 | ||
736ade86 XR |
2624 | /* Determine if TYPE is an access to an unconstrained array. */ |
2625 | ||
d91e9ea8 | 2626 | bool |
736ade86 XR |
2627 | ada_is_access_to_unconstrained_array (struct type *type) |
2628 | { | |
78134374 | 2629 | return (type->code () == TYPE_CODE_TYPEDEF |
736ade86 XR |
2630 | && is_thick_pntr (ada_typedef_target_type (type))); |
2631 | } | |
2632 | ||
4c4b4cd2 PH |
2633 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2634 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2635 | thereto. */ |
2636 | ||
d2e4a39e AS |
2637 | struct value * |
2638 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2639 | { |
2640 | int k; | |
d2e4a39e AS |
2641 | struct value *elt; |
2642 | struct type *elt_type; | |
14f9c5c9 AS |
2643 | |
2644 | elt = ada_coerce_to_simple_array (arr); | |
2645 | ||
df407dfe | 2646 | elt_type = ada_check_typedef (value_type (elt)); |
78134374 | 2647 | if (elt_type->code () == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2648 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2649 | return value_subscript_packed (elt, arity, ind); | |
2650 | ||
2651 | for (k = 0; k < arity; k += 1) | |
2652 | { | |
b9c50e9a XR |
2653 | struct type *saved_elt_type = TYPE_TARGET_TYPE (elt_type); |
2654 | ||
78134374 | 2655 | if (elt_type->code () != TYPE_CODE_ARRAY) |
dda83cd7 | 2656 | error (_("too many subscripts (%d expected)"), k); |
b9c50e9a | 2657 | |
2497b498 | 2658 | elt = value_subscript (elt, pos_atr (ind[k])); |
b9c50e9a XR |
2659 | |
2660 | if (ada_is_access_to_unconstrained_array (saved_elt_type) | |
78134374 | 2661 | && value_type (elt)->code () != TYPE_CODE_TYPEDEF) |
b9c50e9a XR |
2662 | { |
2663 | /* The element is a typedef to an unconstrained array, | |
2664 | except that the value_subscript call stripped the | |
2665 | typedef layer. The typedef layer is GNAT's way to | |
2666 | specify that the element is, at the source level, an | |
2667 | access to the unconstrained array, rather than the | |
2668 | unconstrained array. So, we need to restore that | |
2669 | typedef layer, which we can do by forcing the element's | |
2670 | type back to its original type. Otherwise, the returned | |
2671 | value is going to be printed as the array, rather | |
2672 | than as an access. Another symptom of the same issue | |
2673 | would be that an expression trying to dereference the | |
2674 | element would also be improperly rejected. */ | |
2675 | deprecated_set_value_type (elt, saved_elt_type); | |
2676 | } | |
2677 | ||
2678 | elt_type = ada_check_typedef (value_type (elt)); | |
14f9c5c9 | 2679 | } |
b9c50e9a | 2680 | |
14f9c5c9 AS |
2681 | return elt; |
2682 | } | |
2683 | ||
deede10c JB |
2684 | /* Assuming ARR is a pointer to a GDB array, the value of the element |
2685 | of *ARR at the ARITY indices given in IND. | |
919e6dbe PMR |
2686 | Does not read the entire array into memory. |
2687 | ||
2688 | Note: Unlike what one would expect, this function is used instead of | |
2689 | ada_value_subscript for basically all non-packed array types. The reason | |
2690 | for this is that a side effect of doing our own pointer arithmetics instead | |
2691 | of relying on value_subscript is that there is no implicit typedef peeling. | |
2692 | This is important for arrays of array accesses, where it allows us to | |
2693 | preserve the fact that the array's element is an array access, where the | |
2694 | access part os encoded in a typedef layer. */ | |
14f9c5c9 | 2695 | |
2c0b251b | 2696 | static struct value * |
deede10c | 2697 | ada_value_ptr_subscript (struct value *arr, int arity, struct value **ind) |
14f9c5c9 AS |
2698 | { |
2699 | int k; | |
919e6dbe | 2700 | struct value *array_ind = ada_value_ind (arr); |
deede10c | 2701 | struct type *type |
919e6dbe PMR |
2702 | = check_typedef (value_enclosing_type (array_ind)); |
2703 | ||
78134374 | 2704 | if (type->code () == TYPE_CODE_ARRAY |
919e6dbe PMR |
2705 | && TYPE_FIELD_BITSIZE (type, 0) > 0) |
2706 | return value_subscript_packed (array_ind, arity, ind); | |
14f9c5c9 AS |
2707 | |
2708 | for (k = 0; k < arity; k += 1) | |
2709 | { | |
2710 | LONGEST lwb, upb; | |
14f9c5c9 | 2711 | |
78134374 | 2712 | if (type->code () != TYPE_CODE_ARRAY) |
dda83cd7 | 2713 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2714 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
dda83cd7 | 2715 | value_copy (arr)); |
3d967001 | 2716 | get_discrete_bounds (type->index_type (), &lwb, &upb); |
53a47a3e | 2717 | arr = value_ptradd (arr, pos_atr (ind[k]) - lwb); |
14f9c5c9 AS |
2718 | type = TYPE_TARGET_TYPE (type); |
2719 | } | |
2720 | ||
2721 | return value_ind (arr); | |
2722 | } | |
2723 | ||
0b5d8877 | 2724 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
aa715135 JG |
2725 | actual type of ARRAY_PTR is ignored), returns the Ada slice of |
2726 | HIGH'Pos-LOW'Pos+1 elements starting at index LOW. The lower bound of | |
2727 | this array is LOW, as per Ada rules. */ | |
0b5d8877 | 2728 | static struct value * |
f5938064 | 2729 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
dda83cd7 | 2730 | int low, int high) |
0b5d8877 | 2731 | { |
b0dd7688 | 2732 | struct type *type0 = ada_check_typedef (type); |
3d967001 | 2733 | struct type *base_index_type = TYPE_TARGET_TYPE (type0->index_type ()); |
0c9c3474 | 2734 | struct type *index_type |
aa715135 | 2735 | = create_static_range_type (NULL, base_index_type, low, high); |
9fe561ab JB |
2736 | struct type *slice_type = create_array_type_with_stride |
2737 | (NULL, TYPE_TARGET_TYPE (type0), index_type, | |
24e99c6c | 2738 | type0->dyn_prop (DYN_PROP_BYTE_STRIDE), |
9fe561ab | 2739 | TYPE_FIELD_BITSIZE (type0, 0)); |
3d967001 | 2740 | int base_low = ada_discrete_type_low_bound (type0->index_type ()); |
6244c119 | 2741 | gdb::optional<LONGEST> base_low_pos, low_pos; |
aa715135 JG |
2742 | CORE_ADDR base; |
2743 | ||
6244c119 SM |
2744 | low_pos = discrete_position (base_index_type, low); |
2745 | base_low_pos = discrete_position (base_index_type, base_low); | |
2746 | ||
2747 | if (!low_pos.has_value () || !base_low_pos.has_value ()) | |
aa715135 JG |
2748 | { |
2749 | warning (_("unable to get positions in slice, use bounds instead")); | |
2750 | low_pos = low; | |
2751 | base_low_pos = base_low; | |
2752 | } | |
5b4ee69b | 2753 | |
7ff5b937 TT |
2754 | ULONGEST stride = TYPE_FIELD_BITSIZE (slice_type, 0) / 8; |
2755 | if (stride == 0) | |
2756 | stride = TYPE_LENGTH (TYPE_TARGET_TYPE (type0)); | |
2757 | ||
6244c119 | 2758 | base = value_as_address (array_ptr) + (*low_pos - *base_low_pos) * stride; |
f5938064 | 2759 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
2760 | } |
2761 | ||
2762 | ||
2763 | static struct value * | |
2764 | ada_value_slice (struct value *array, int low, int high) | |
2765 | { | |
b0dd7688 | 2766 | struct type *type = ada_check_typedef (value_type (array)); |
3d967001 | 2767 | struct type *base_index_type = TYPE_TARGET_TYPE (type->index_type ()); |
0c9c3474 | 2768 | struct type *index_type |
3d967001 | 2769 | = create_static_range_type (NULL, type->index_type (), low, high); |
9fe561ab JB |
2770 | struct type *slice_type = create_array_type_with_stride |
2771 | (NULL, TYPE_TARGET_TYPE (type), index_type, | |
24e99c6c | 2772 | type->dyn_prop (DYN_PROP_BYTE_STRIDE), |
9fe561ab | 2773 | TYPE_FIELD_BITSIZE (type, 0)); |
6244c119 SM |
2774 | gdb::optional<LONGEST> low_pos, high_pos; |
2775 | ||
5b4ee69b | 2776 | |
6244c119 SM |
2777 | low_pos = discrete_position (base_index_type, low); |
2778 | high_pos = discrete_position (base_index_type, high); | |
2779 | ||
2780 | if (!low_pos.has_value () || !high_pos.has_value ()) | |
aa715135 JG |
2781 | { |
2782 | warning (_("unable to get positions in slice, use bounds instead")); | |
2783 | low_pos = low; | |
2784 | high_pos = high; | |
2785 | } | |
2786 | ||
2787 | return value_cast (slice_type, | |
6244c119 | 2788 | value_slice (array, low, *high_pos - *low_pos + 1)); |
0b5d8877 PH |
2789 | } |
2790 | ||
14f9c5c9 AS |
2791 | /* If type is a record type in the form of a standard GNAT array |
2792 | descriptor, returns the number of dimensions for type. If arr is a | |
2793 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2794 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2795 | |
2796 | int | |
d2e4a39e | 2797 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2798 | { |
2799 | int arity; | |
2800 | ||
2801 | if (type == NULL) | |
2802 | return 0; | |
2803 | ||
2804 | type = desc_base_type (type); | |
2805 | ||
2806 | arity = 0; | |
78134374 | 2807 | if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 | 2808 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e | 2809 | else |
78134374 | 2810 | while (type->code () == TYPE_CODE_ARRAY) |
14f9c5c9 | 2811 | { |
dda83cd7 SM |
2812 | arity += 1; |
2813 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
14f9c5c9 | 2814 | } |
d2e4a39e | 2815 | |
14f9c5c9 AS |
2816 | return arity; |
2817 | } | |
2818 | ||
2819 | /* If TYPE is a record type in the form of a standard GNAT array | |
2820 | descriptor or a simple array type, returns the element type for | |
2821 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2822 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2823 | |
d2e4a39e AS |
2824 | struct type * |
2825 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2826 | { |
2827 | type = desc_base_type (type); | |
2828 | ||
78134374 | 2829 | if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2830 | { |
2831 | int k; | |
d2e4a39e | 2832 | struct type *p_array_type; |
14f9c5c9 | 2833 | |
556bdfd4 | 2834 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
2835 | |
2836 | k = ada_array_arity (type); | |
2837 | if (k == 0) | |
dda83cd7 | 2838 | return NULL; |
d2e4a39e | 2839 | |
4c4b4cd2 | 2840 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2841 | if (nindices >= 0 && k > nindices) |
dda83cd7 | 2842 | k = nindices; |
d2e4a39e | 2843 | while (k > 0 && p_array_type != NULL) |
dda83cd7 SM |
2844 | { |
2845 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); | |
2846 | k -= 1; | |
2847 | } | |
14f9c5c9 AS |
2848 | return p_array_type; |
2849 | } | |
78134374 | 2850 | else if (type->code () == TYPE_CODE_ARRAY) |
14f9c5c9 | 2851 | { |
78134374 | 2852 | while (nindices != 0 && type->code () == TYPE_CODE_ARRAY) |
dda83cd7 SM |
2853 | { |
2854 | type = TYPE_TARGET_TYPE (type); | |
2855 | nindices -= 1; | |
2856 | } | |
14f9c5c9 AS |
2857 | return type; |
2858 | } | |
2859 | ||
2860 | return NULL; | |
2861 | } | |
2862 | ||
08a057e6 | 2863 | /* See ada-lang.h. */ |
14f9c5c9 | 2864 | |
08a057e6 | 2865 | struct type * |
1eea4ebd | 2866 | ada_index_type (struct type *type, int n, const char *name) |
14f9c5c9 | 2867 | { |
4c4b4cd2 PH |
2868 | struct type *result_type; |
2869 | ||
14f9c5c9 AS |
2870 | type = desc_base_type (type); |
2871 | ||
1eea4ebd UW |
2872 | if (n < 0 || n > ada_array_arity (type)) |
2873 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 2874 | |
4c4b4cd2 | 2875 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2876 | { |
2877 | int i; | |
2878 | ||
2879 | for (i = 1; i < n; i += 1) | |
dda83cd7 | 2880 | type = TYPE_TARGET_TYPE (type); |
3d967001 | 2881 | result_type = TYPE_TARGET_TYPE (type->index_type ()); |
4c4b4cd2 | 2882 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
dda83cd7 SM |
2883 | has a target type of TYPE_CODE_UNDEF. We compensate here, but |
2884 | perhaps stabsread.c would make more sense. */ | |
78134374 | 2885 | if (result_type && result_type->code () == TYPE_CODE_UNDEF) |
dda83cd7 | 2886 | result_type = NULL; |
14f9c5c9 | 2887 | } |
d2e4a39e | 2888 | else |
1eea4ebd UW |
2889 | { |
2890 | result_type = desc_index_type (desc_bounds_type (type), n); | |
2891 | if (result_type == NULL) | |
2892 | error (_("attempt to take bound of something that is not an array")); | |
2893 | } | |
2894 | ||
2895 | return result_type; | |
14f9c5c9 AS |
2896 | } |
2897 | ||
2898 | /* Given that arr is an array type, returns the lower bound of the | |
2899 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 2900 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
2901 | array-descriptor type. It works for other arrays with bounds supplied |
2902 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2903 | |
abb68b3e | 2904 | static LONGEST |
fb5e3d5c | 2905 | ada_array_bound_from_type (struct type *arr_type, int n, int which) |
14f9c5c9 | 2906 | { |
8a48ac95 | 2907 | struct type *type, *index_type_desc, *index_type; |
1ce677a4 | 2908 | int i; |
262452ec JK |
2909 | |
2910 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 | 2911 | |
ad82864c JB |
2912 | if (ada_is_constrained_packed_array_type (arr_type)) |
2913 | arr_type = decode_constrained_packed_array_type (arr_type); | |
14f9c5c9 | 2914 | |
4c4b4cd2 | 2915 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2916 | return (LONGEST) - which; |
14f9c5c9 | 2917 | |
78134374 | 2918 | if (arr_type->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
2919 | type = TYPE_TARGET_TYPE (arr_type); |
2920 | else | |
2921 | type = arr_type; | |
2922 | ||
22c4c60c | 2923 | if (type->is_fixed_instance ()) |
bafffb51 JB |
2924 | { |
2925 | /* The array has already been fixed, so we do not need to | |
2926 | check the parallel ___XA type again. That encoding has | |
2927 | already been applied, so ignore it now. */ | |
2928 | index_type_desc = NULL; | |
2929 | } | |
2930 | else | |
2931 | { | |
2932 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
2933 | ada_fixup_array_indexes_type (index_type_desc); | |
2934 | } | |
2935 | ||
262452ec | 2936 | if (index_type_desc != NULL) |
940da03e | 2937 | index_type = to_fixed_range_type (index_type_desc->field (n - 1).type (), |
28c85d6c | 2938 | NULL); |
262452ec | 2939 | else |
8a48ac95 JB |
2940 | { |
2941 | struct type *elt_type = check_typedef (type); | |
2942 | ||
2943 | for (i = 1; i < n; i++) | |
2944 | elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
2945 | ||
3d967001 | 2946 | index_type = elt_type->index_type (); |
8a48ac95 | 2947 | } |
262452ec | 2948 | |
43bbcdc2 PH |
2949 | return |
2950 | (LONGEST) (which == 0 | |
dda83cd7 SM |
2951 | ? ada_discrete_type_low_bound (index_type) |
2952 | : ada_discrete_type_high_bound (index_type)); | |
14f9c5c9 AS |
2953 | } |
2954 | ||
2955 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
2956 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
2957 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 2958 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 2959 | |
1eea4ebd | 2960 | static LONGEST |
4dc81987 | 2961 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2962 | { |
eb479039 JB |
2963 | struct type *arr_type; |
2964 | ||
78134374 | 2965 | if (check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
eb479039 JB |
2966 | arr = value_ind (arr); |
2967 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 2968 | |
ad82864c JB |
2969 | if (ada_is_constrained_packed_array_type (arr_type)) |
2970 | return ada_array_bound (decode_constrained_packed_array (arr), n, which); | |
4c4b4cd2 | 2971 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2972 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 2973 | else |
1eea4ebd | 2974 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
2975 | } |
2976 | ||
2977 | /* Given that arr is an array value, returns the length of the | |
2978 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2979 | supplied by run-time quantities other than discriminants. |
2980 | Does not work for arrays indexed by enumeration types with representation | |
2981 | clauses at the moment. */ | |
14f9c5c9 | 2982 | |
1eea4ebd | 2983 | static LONGEST |
d2e4a39e | 2984 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 2985 | { |
aa715135 JG |
2986 | struct type *arr_type, *index_type; |
2987 | int low, high; | |
eb479039 | 2988 | |
78134374 | 2989 | if (check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
eb479039 JB |
2990 | arr = value_ind (arr); |
2991 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 2992 | |
ad82864c JB |
2993 | if (ada_is_constrained_packed_array_type (arr_type)) |
2994 | return ada_array_length (decode_constrained_packed_array (arr), n); | |
14f9c5c9 | 2995 | |
4c4b4cd2 | 2996 | if (ada_is_simple_array_type (arr_type)) |
aa715135 JG |
2997 | { |
2998 | low = ada_array_bound_from_type (arr_type, n, 0); | |
2999 | high = ada_array_bound_from_type (arr_type, n, 1); | |
3000 | } | |
14f9c5c9 | 3001 | else |
aa715135 JG |
3002 | { |
3003 | low = value_as_long (desc_one_bound (desc_bounds (arr), n, 0)); | |
3004 | high = value_as_long (desc_one_bound (desc_bounds (arr), n, 1)); | |
3005 | } | |
3006 | ||
f168693b | 3007 | arr_type = check_typedef (arr_type); |
7150d33c | 3008 | index_type = ada_index_type (arr_type, n, "length"); |
aa715135 JG |
3009 | if (index_type != NULL) |
3010 | { | |
3011 | struct type *base_type; | |
78134374 | 3012 | if (index_type->code () == TYPE_CODE_RANGE) |
aa715135 JG |
3013 | base_type = TYPE_TARGET_TYPE (index_type); |
3014 | else | |
3015 | base_type = index_type; | |
3016 | ||
3017 | low = pos_atr (value_from_longest (base_type, low)); | |
3018 | high = pos_atr (value_from_longest (base_type, high)); | |
3019 | } | |
3020 | return high - low + 1; | |
4c4b4cd2 PH |
3021 | } |
3022 | ||
bff8c71f TT |
3023 | /* An array whose type is that of ARR_TYPE (an array type), with |
3024 | bounds LOW to HIGH, but whose contents are unimportant. If HIGH is | |
3025 | less than LOW, then LOW-1 is used. */ | |
4c4b4cd2 PH |
3026 | |
3027 | static struct value * | |
bff8c71f | 3028 | empty_array (struct type *arr_type, int low, int high) |
4c4b4cd2 | 3029 | { |
b0dd7688 | 3030 | struct type *arr_type0 = ada_check_typedef (arr_type); |
0c9c3474 SA |
3031 | struct type *index_type |
3032 | = create_static_range_type | |
dda83cd7 | 3033 | (NULL, TYPE_TARGET_TYPE (arr_type0->index_type ()), low, |
bff8c71f | 3034 | high < low ? low - 1 : high); |
b0dd7688 | 3035 | struct type *elt_type = ada_array_element_type (arr_type0, 1); |
5b4ee69b | 3036 | |
0b5d8877 | 3037 | return allocate_value (create_array_type (NULL, elt_type, index_type)); |
14f9c5c9 | 3038 | } |
14f9c5c9 | 3039 | \f |
d2e4a39e | 3040 | |
dda83cd7 | 3041 | /* Name resolution */ |
14f9c5c9 | 3042 | |
4c4b4cd2 PH |
3043 | /* The "decoded" name for the user-definable Ada operator corresponding |
3044 | to OP. */ | |
14f9c5c9 | 3045 | |
d2e4a39e | 3046 | static const char * |
4c4b4cd2 | 3047 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
3048 | { |
3049 | int i; | |
3050 | ||
4c4b4cd2 | 3051 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
3052 | { |
3053 | if (ada_opname_table[i].op == op) | |
dda83cd7 | 3054 | return ada_opname_table[i].decoded; |
14f9c5c9 | 3055 | } |
323e0a4a | 3056 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
3057 | } |
3058 | ||
de93309a SM |
3059 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3060 | in a listing of choices during disambiguation (see sort_choices, below). | |
3061 | The idea is that overloadings of a subprogram name from the | |
3062 | same package should sort in their source order. We settle for ordering | |
3063 | such symbols by their trailing number (__N or $N). */ | |
14f9c5c9 | 3064 | |
de93309a SM |
3065 | static int |
3066 | encoded_ordered_before (const char *N0, const char *N1) | |
14f9c5c9 | 3067 | { |
de93309a SM |
3068 | if (N1 == NULL) |
3069 | return 0; | |
3070 | else if (N0 == NULL) | |
3071 | return 1; | |
3072 | else | |
3073 | { | |
3074 | int k0, k1; | |
30b15541 | 3075 | |
de93309a | 3076 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
dda83cd7 | 3077 | ; |
de93309a | 3078 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
dda83cd7 | 3079 | ; |
de93309a | 3080 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
dda83cd7 SM |
3081 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3082 | { | |
3083 | int n0, n1; | |
3084 | ||
3085 | n0 = k0; | |
3086 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3087 | n0 -= 1; | |
3088 | n1 = k1; | |
3089 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3090 | n1 -= 1; | |
3091 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3092 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3093 | } | |
de93309a SM |
3094 | return (strcmp (N0, N1) < 0); |
3095 | } | |
14f9c5c9 AS |
3096 | } |
3097 | ||
de93309a SM |
3098 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3099 | encoded names. */ | |
14f9c5c9 | 3100 | |
de93309a SM |
3101 | static void |
3102 | sort_choices (struct block_symbol syms[], int nsyms) | |
14f9c5c9 | 3103 | { |
14f9c5c9 | 3104 | int i; |
14f9c5c9 | 3105 | |
de93309a | 3106 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3107 | { |
de93309a SM |
3108 | struct block_symbol sym = syms[i]; |
3109 | int j; | |
3110 | ||
3111 | for (j = i - 1; j >= 0; j -= 1) | |
dda83cd7 SM |
3112 | { |
3113 | if (encoded_ordered_before (syms[j].symbol->linkage_name (), | |
3114 | sym.symbol->linkage_name ())) | |
3115 | break; | |
3116 | syms[j + 1] = syms[j]; | |
3117 | } | |
de93309a SM |
3118 | syms[j + 1] = sym; |
3119 | } | |
3120 | } | |
14f9c5c9 | 3121 | |
de93309a SM |
3122 | /* Whether GDB should display formals and return types for functions in the |
3123 | overloads selection menu. */ | |
3124 | static bool print_signatures = true; | |
4c4b4cd2 | 3125 | |
de93309a SM |
3126 | /* Print the signature for SYM on STREAM according to the FLAGS options. For |
3127 | all but functions, the signature is just the name of the symbol. For | |
3128 | functions, this is the name of the function, the list of types for formals | |
3129 | and the return type (if any). */ | |
4c4b4cd2 | 3130 | |
de93309a SM |
3131 | static void |
3132 | ada_print_symbol_signature (struct ui_file *stream, struct symbol *sym, | |
3133 | const struct type_print_options *flags) | |
3134 | { | |
3135 | struct type *type = SYMBOL_TYPE (sym); | |
14f9c5c9 | 3136 | |
987012b8 | 3137 | fprintf_filtered (stream, "%s", sym->print_name ()); |
de93309a SM |
3138 | if (!print_signatures |
3139 | || type == NULL | |
78134374 | 3140 | || type->code () != TYPE_CODE_FUNC) |
de93309a | 3141 | return; |
4c4b4cd2 | 3142 | |
1f704f76 | 3143 | if (type->num_fields () > 0) |
de93309a SM |
3144 | { |
3145 | int i; | |
14f9c5c9 | 3146 | |
de93309a | 3147 | fprintf_filtered (stream, " ("); |
1f704f76 | 3148 | for (i = 0; i < type->num_fields (); ++i) |
de93309a SM |
3149 | { |
3150 | if (i > 0) | |
3151 | fprintf_filtered (stream, "; "); | |
940da03e | 3152 | ada_print_type (type->field (i).type (), NULL, stream, -1, 0, |
de93309a SM |
3153 | flags); |
3154 | } | |
3155 | fprintf_filtered (stream, ")"); | |
3156 | } | |
3157 | if (TYPE_TARGET_TYPE (type) != NULL | |
78134374 | 3158 | && TYPE_TARGET_TYPE (type)->code () != TYPE_CODE_VOID) |
de93309a SM |
3159 | { |
3160 | fprintf_filtered (stream, " return "); | |
3161 | ada_print_type (TYPE_TARGET_TYPE (type), NULL, stream, -1, 0, flags); | |
3162 | } | |
3163 | } | |
14f9c5c9 | 3164 | |
de93309a SM |
3165 | /* Read and validate a set of numeric choices from the user in the |
3166 | range 0 .. N_CHOICES-1. Place the results in increasing | |
3167 | order in CHOICES[0 .. N-1], and return N. | |
14f9c5c9 | 3168 | |
de93309a SM |
3169 | The user types choices as a sequence of numbers on one line |
3170 | separated by blanks, encoding them as follows: | |
14f9c5c9 | 3171 | |
de93309a SM |
3172 | + A choice of 0 means to cancel the selection, throwing an error. |
3173 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. | |
3174 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
14f9c5c9 | 3175 | |
de93309a | 3176 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 | 3177 | |
de93309a SM |
3178 | ANNOTATION_SUFFIX, if present, is used to annotate the input |
3179 | prompts (for use with the -f switch). */ | |
14f9c5c9 | 3180 | |
de93309a SM |
3181 | static int |
3182 | get_selections (int *choices, int n_choices, int max_results, | |
dda83cd7 | 3183 | int is_all_choice, const char *annotation_suffix) |
de93309a | 3184 | { |
992a7040 | 3185 | const char *args; |
de93309a SM |
3186 | const char *prompt; |
3187 | int n_chosen; | |
3188 | int first_choice = is_all_choice ? 2 : 1; | |
14f9c5c9 | 3189 | |
de93309a SM |
3190 | prompt = getenv ("PS2"); |
3191 | if (prompt == NULL) | |
3192 | prompt = "> "; | |
4c4b4cd2 | 3193 | |
de93309a | 3194 | args = command_line_input (prompt, annotation_suffix); |
4c4b4cd2 | 3195 | |
de93309a SM |
3196 | if (args == NULL) |
3197 | error_no_arg (_("one or more choice numbers")); | |
14f9c5c9 | 3198 | |
de93309a | 3199 | n_chosen = 0; |
4c4b4cd2 | 3200 | |
de93309a SM |
3201 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3202 | order, as given in args. Choices are validated. */ | |
3203 | while (1) | |
14f9c5c9 | 3204 | { |
de93309a SM |
3205 | char *args2; |
3206 | int choice, j; | |
76a01679 | 3207 | |
de93309a SM |
3208 | args = skip_spaces (args); |
3209 | if (*args == '\0' && n_chosen == 0) | |
dda83cd7 | 3210 | error_no_arg (_("one or more choice numbers")); |
de93309a | 3211 | else if (*args == '\0') |
dda83cd7 | 3212 | break; |
76a01679 | 3213 | |
de93309a SM |
3214 | choice = strtol (args, &args2, 10); |
3215 | if (args == args2 || choice < 0 | |
dda83cd7 SM |
3216 | || choice > n_choices + first_choice - 1) |
3217 | error (_("Argument must be choice number")); | |
de93309a | 3218 | args = args2; |
76a01679 | 3219 | |
de93309a | 3220 | if (choice == 0) |
dda83cd7 | 3221 | error (_("cancelled")); |
76a01679 | 3222 | |
de93309a | 3223 | if (choice < first_choice) |
dda83cd7 SM |
3224 | { |
3225 | n_chosen = n_choices; | |
3226 | for (j = 0; j < n_choices; j += 1) | |
3227 | choices[j] = j; | |
3228 | break; | |
3229 | } | |
de93309a | 3230 | choice -= first_choice; |
76a01679 | 3231 | |
de93309a | 3232 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
dda83cd7 SM |
3233 | { |
3234 | } | |
4c4b4cd2 | 3235 | |
de93309a | 3236 | if (j < 0 || choice != choices[j]) |
dda83cd7 SM |
3237 | { |
3238 | int k; | |
4c4b4cd2 | 3239 | |
dda83cd7 SM |
3240 | for (k = n_chosen - 1; k > j; k -= 1) |
3241 | choices[k + 1] = choices[k]; | |
3242 | choices[j + 1] = choice; | |
3243 | n_chosen += 1; | |
3244 | } | |
14f9c5c9 AS |
3245 | } |
3246 | ||
de93309a SM |
3247 | if (n_chosen > max_results) |
3248 | error (_("Select no more than %d of the above"), max_results); | |
3249 | ||
3250 | return n_chosen; | |
14f9c5c9 AS |
3251 | } |
3252 | ||
de93309a SM |
3253 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3254 | by asking the user (if necessary), returning the number selected, | |
3255 | and setting the first elements of SYMS items. Error if no symbols | |
3256 | selected. */ | |
3257 | ||
3258 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
3259 | to be re-integrated one of these days. */ | |
14f9c5c9 AS |
3260 | |
3261 | static int | |
de93309a | 3262 | user_select_syms (struct block_symbol *syms, int nsyms, int max_results) |
14f9c5c9 | 3263 | { |
de93309a SM |
3264 | int i; |
3265 | int *chosen = XALLOCAVEC (int , nsyms); | |
3266 | int n_chosen; | |
3267 | int first_choice = (max_results == 1) ? 1 : 2; | |
3268 | const char *select_mode = multiple_symbols_select_mode (); | |
14f9c5c9 | 3269 | |
de93309a SM |
3270 | if (max_results < 1) |
3271 | error (_("Request to select 0 symbols!")); | |
3272 | if (nsyms <= 1) | |
3273 | return nsyms; | |
14f9c5c9 | 3274 | |
de93309a SM |
3275 | if (select_mode == multiple_symbols_cancel) |
3276 | error (_("\ | |
3277 | canceled because the command is ambiguous\n\ | |
3278 | See set/show multiple-symbol.")); | |
14f9c5c9 | 3279 | |
de93309a SM |
3280 | /* If select_mode is "all", then return all possible symbols. |
3281 | Only do that if more than one symbol can be selected, of course. | |
3282 | Otherwise, display the menu as usual. */ | |
3283 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3284 | return nsyms; | |
14f9c5c9 | 3285 | |
de93309a SM |
3286 | printf_filtered (_("[0] cancel\n")); |
3287 | if (max_results > 1) | |
3288 | printf_filtered (_("[1] all\n")); | |
14f9c5c9 | 3289 | |
de93309a | 3290 | sort_choices (syms, nsyms); |
14f9c5c9 | 3291 | |
de93309a SM |
3292 | for (i = 0; i < nsyms; i += 1) |
3293 | { | |
3294 | if (syms[i].symbol == NULL) | |
dda83cd7 | 3295 | continue; |
14f9c5c9 | 3296 | |
de93309a | 3297 | if (SYMBOL_CLASS (syms[i].symbol) == LOC_BLOCK) |
dda83cd7 SM |
3298 | { |
3299 | struct symtab_and_line sal = | |
3300 | find_function_start_sal (syms[i].symbol, 1); | |
14f9c5c9 | 3301 | |
de93309a SM |
3302 | printf_filtered ("[%d] ", i + first_choice); |
3303 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3304 | &type_print_raw_options); | |
3305 | if (sal.symtab == NULL) | |
3306 | printf_filtered (_(" at %p[<no source file available>%p]:%d\n"), | |
3307 | metadata_style.style ().ptr (), nullptr, sal.line); | |
3308 | else | |
3309 | printf_filtered | |
3310 | (_(" at %ps:%d\n"), | |
3311 | styled_string (file_name_style.style (), | |
3312 | symtab_to_filename_for_display (sal.symtab)), | |
3313 | sal.line); | |
dda83cd7 SM |
3314 | continue; |
3315 | } | |
76a01679 | 3316 | else |
dda83cd7 SM |
3317 | { |
3318 | int is_enumeral = | |
3319 | (SYMBOL_CLASS (syms[i].symbol) == LOC_CONST | |
3320 | && SYMBOL_TYPE (syms[i].symbol) != NULL | |
3321 | && SYMBOL_TYPE (syms[i].symbol)->code () == TYPE_CODE_ENUM); | |
de93309a | 3322 | struct symtab *symtab = NULL; |
4c4b4cd2 | 3323 | |
de93309a SM |
3324 | if (SYMBOL_OBJFILE_OWNED (syms[i].symbol)) |
3325 | symtab = symbol_symtab (syms[i].symbol); | |
3326 | ||
dda83cd7 | 3327 | if (SYMBOL_LINE (syms[i].symbol) != 0 && symtab != NULL) |
de93309a SM |
3328 | { |
3329 | printf_filtered ("[%d] ", i + first_choice); | |
3330 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3331 | &type_print_raw_options); | |
3332 | printf_filtered (_(" at %s:%d\n"), | |
3333 | symtab_to_filename_for_display (symtab), | |
3334 | SYMBOL_LINE (syms[i].symbol)); | |
3335 | } | |
dda83cd7 SM |
3336 | else if (is_enumeral |
3337 | && SYMBOL_TYPE (syms[i].symbol)->name () != NULL) | |
3338 | { | |
3339 | printf_filtered (("[%d] "), i + first_choice); | |
3340 | ada_print_type (SYMBOL_TYPE (syms[i].symbol), NULL, | |
3341 | gdb_stdout, -1, 0, &type_print_raw_options); | |
3342 | printf_filtered (_("'(%s) (enumeral)\n"), | |
987012b8 | 3343 | syms[i].symbol->print_name ()); |
dda83cd7 | 3344 | } |
de93309a SM |
3345 | else |
3346 | { | |
3347 | printf_filtered ("[%d] ", i + first_choice); | |
3348 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3349 | &type_print_raw_options); | |
3350 | ||
3351 | if (symtab != NULL) | |
3352 | printf_filtered (is_enumeral | |
3353 | ? _(" in %s (enumeral)\n") | |
3354 | : _(" at %s:?\n"), | |
3355 | symtab_to_filename_for_display (symtab)); | |
3356 | else | |
3357 | printf_filtered (is_enumeral | |
3358 | ? _(" (enumeral)\n") | |
3359 | : _(" at ?\n")); | |
3360 | } | |
dda83cd7 | 3361 | } |
14f9c5c9 | 3362 | } |
14f9c5c9 | 3363 | |
de93309a | 3364 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
dda83cd7 | 3365 | "overload-choice"); |
14f9c5c9 | 3366 | |
de93309a SM |
3367 | for (i = 0; i < n_chosen; i += 1) |
3368 | syms[i] = syms[chosen[i]]; | |
14f9c5c9 | 3369 | |
de93309a SM |
3370 | return n_chosen; |
3371 | } | |
14f9c5c9 | 3372 | |
cd9a3148 TT |
3373 | /* See ada-lang.h. */ |
3374 | ||
3375 | block_symbol | |
7056f312 | 3376 | ada_find_operator_symbol (enum exp_opcode op, bool parse_completion, |
cd9a3148 TT |
3377 | int nargs, value *argvec[]) |
3378 | { | |
3379 | if (possible_user_operator_p (op, argvec)) | |
3380 | { | |
3381 | std::vector<struct block_symbol> candidates | |
3382 | = ada_lookup_symbol_list (ada_decoded_op_name (op), | |
3383 | NULL, VAR_DOMAIN); | |
3384 | ||
3385 | int i = ada_resolve_function (candidates, argvec, | |
3386 | nargs, ada_decoded_op_name (op), NULL, | |
3387 | parse_completion); | |
3388 | if (i >= 0) | |
3389 | return candidates[i]; | |
3390 | } | |
3391 | return {}; | |
3392 | } | |
3393 | ||
3394 | /* See ada-lang.h. */ | |
3395 | ||
3396 | block_symbol | |
3397 | ada_resolve_funcall (struct symbol *sym, const struct block *block, | |
3398 | struct type *context_type, | |
7056f312 | 3399 | bool parse_completion, |
cd9a3148 TT |
3400 | int nargs, value *argvec[], |
3401 | innermost_block_tracker *tracker) | |
3402 | { | |
3403 | std::vector<struct block_symbol> candidates | |
3404 | = ada_lookup_symbol_list (sym->linkage_name (), block, VAR_DOMAIN); | |
3405 | ||
3406 | int i; | |
3407 | if (candidates.size () == 1) | |
3408 | i = 0; | |
3409 | else | |
3410 | { | |
3411 | i = ada_resolve_function | |
3412 | (candidates, | |
3413 | argvec, nargs, | |
3414 | sym->linkage_name (), | |
3415 | context_type, parse_completion); | |
3416 | if (i < 0) | |
3417 | error (_("Could not find a match for %s"), sym->print_name ()); | |
3418 | } | |
3419 | ||
3420 | tracker->update (candidates[i]); | |
3421 | return candidates[i]; | |
3422 | } | |
3423 | ||
3424 | /* See ada-lang.h. */ | |
3425 | ||
3426 | block_symbol | |
3427 | ada_resolve_variable (struct symbol *sym, const struct block *block, | |
3428 | struct type *context_type, | |
7056f312 | 3429 | bool parse_completion, |
cd9a3148 TT |
3430 | int deprocedure_p, |
3431 | innermost_block_tracker *tracker) | |
3432 | { | |
3433 | std::vector<struct block_symbol> candidates | |
3434 | = ada_lookup_symbol_list (sym->linkage_name (), block, VAR_DOMAIN); | |
3435 | ||
3436 | if (std::any_of (candidates.begin (), | |
3437 | candidates.end (), | |
3438 | [] (block_symbol &bsym) | |
3439 | { | |
3440 | switch (SYMBOL_CLASS (bsym.symbol)) | |
3441 | { | |
3442 | case LOC_REGISTER: | |
3443 | case LOC_ARG: | |
3444 | case LOC_REF_ARG: | |
3445 | case LOC_REGPARM_ADDR: | |
3446 | case LOC_LOCAL: | |
3447 | case LOC_COMPUTED: | |
3448 | return true; | |
3449 | default: | |
3450 | return false; | |
3451 | } | |
3452 | })) | |
3453 | { | |
3454 | /* Types tend to get re-introduced locally, so if there | |
3455 | are any local symbols that are not types, first filter | |
3456 | out all types. */ | |
3457 | candidates.erase | |
3458 | (std::remove_if | |
3459 | (candidates.begin (), | |
3460 | candidates.end (), | |
3461 | [] (block_symbol &bsym) | |
3462 | { | |
3463 | return SYMBOL_CLASS (bsym.symbol) == LOC_TYPEDEF; | |
3464 | }), | |
3465 | candidates.end ()); | |
3466 | } | |
3467 | ||
3468 | int i; | |
3469 | if (candidates.empty ()) | |
3470 | error (_("No definition found for %s"), sym->print_name ()); | |
3471 | else if (candidates.size () == 1) | |
3472 | i = 0; | |
3473 | else if (deprocedure_p && !is_nonfunction (candidates)) | |
3474 | { | |
3475 | i = ada_resolve_function | |
3476 | (candidates, NULL, 0, | |
3477 | sym->linkage_name (), | |
3478 | context_type, parse_completion); | |
3479 | if (i < 0) | |
3480 | error (_("Could not find a match for %s"), sym->print_name ()); | |
3481 | } | |
3482 | else | |
3483 | { | |
3484 | printf_filtered (_("Multiple matches for %s\n"), sym->print_name ()); | |
3485 | user_select_syms (candidates.data (), candidates.size (), 1); | |
3486 | i = 0; | |
3487 | } | |
3488 | ||
3489 | tracker->update (candidates[i]); | |
3490 | return candidates[i]; | |
3491 | } | |
3492 | ||
db2534b7 | 3493 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. */ |
de93309a SM |
3494 | /* The term "match" here is rather loose. The match is heuristic and |
3495 | liberal. */ | |
14f9c5c9 | 3496 | |
de93309a | 3497 | static int |
db2534b7 | 3498 | ada_type_match (struct type *ftype, struct type *atype) |
14f9c5c9 | 3499 | { |
de93309a SM |
3500 | ftype = ada_check_typedef (ftype); |
3501 | atype = ada_check_typedef (atype); | |
14f9c5c9 | 3502 | |
78134374 | 3503 | if (ftype->code () == TYPE_CODE_REF) |
de93309a | 3504 | ftype = TYPE_TARGET_TYPE (ftype); |
78134374 | 3505 | if (atype->code () == TYPE_CODE_REF) |
de93309a | 3506 | atype = TYPE_TARGET_TYPE (atype); |
14f9c5c9 | 3507 | |
78134374 | 3508 | switch (ftype->code ()) |
14f9c5c9 | 3509 | { |
de93309a | 3510 | default: |
78134374 | 3511 | return ftype->code () == atype->code (); |
de93309a | 3512 | case TYPE_CODE_PTR: |
db2534b7 TT |
3513 | if (atype->code () != TYPE_CODE_PTR) |
3514 | return 0; | |
3515 | atype = TYPE_TARGET_TYPE (atype); | |
3516 | /* This can only happen if the actual argument is 'null'. */ | |
3517 | if (atype->code () == TYPE_CODE_INT && TYPE_LENGTH (atype) == 0) | |
3518 | return 1; | |
3519 | return ada_type_match (TYPE_TARGET_TYPE (ftype), atype); | |
de93309a SM |
3520 | case TYPE_CODE_INT: |
3521 | case TYPE_CODE_ENUM: | |
3522 | case TYPE_CODE_RANGE: | |
78134374 | 3523 | switch (atype->code ()) |
dda83cd7 SM |
3524 | { |
3525 | case TYPE_CODE_INT: | |
3526 | case TYPE_CODE_ENUM: | |
3527 | case TYPE_CODE_RANGE: | |
3528 | return 1; | |
3529 | default: | |
3530 | return 0; | |
3531 | } | |
d2e4a39e | 3532 | |
de93309a | 3533 | case TYPE_CODE_ARRAY: |
78134374 | 3534 | return (atype->code () == TYPE_CODE_ARRAY |
dda83cd7 | 3535 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 | 3536 | |
de93309a SM |
3537 | case TYPE_CODE_STRUCT: |
3538 | if (ada_is_array_descriptor_type (ftype)) | |
dda83cd7 SM |
3539 | return (atype->code () == TYPE_CODE_ARRAY |
3540 | || ada_is_array_descriptor_type (atype)); | |
de93309a | 3541 | else |
dda83cd7 SM |
3542 | return (atype->code () == TYPE_CODE_STRUCT |
3543 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3544 | |
de93309a SM |
3545 | case TYPE_CODE_UNION: |
3546 | case TYPE_CODE_FLT: | |
78134374 | 3547 | return (atype->code () == ftype->code ()); |
de93309a | 3548 | } |
14f9c5c9 AS |
3549 | } |
3550 | ||
de93309a SM |
3551 | /* Return non-zero if the formals of FUNC "sufficiently match" the |
3552 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3553 | may also be an enumeral, in which case it is treated as a 0- | |
3554 | argument function. */ | |
14f9c5c9 | 3555 | |
de93309a SM |
3556 | static int |
3557 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) | |
3558 | { | |
3559 | int i; | |
3560 | struct type *func_type = SYMBOL_TYPE (func); | |
14f9c5c9 | 3561 | |
de93309a | 3562 | if (SYMBOL_CLASS (func) == LOC_CONST |
78134374 | 3563 | && func_type->code () == TYPE_CODE_ENUM) |
de93309a | 3564 | return (n_actuals == 0); |
78134374 | 3565 | else if (func_type == NULL || func_type->code () != TYPE_CODE_FUNC) |
de93309a | 3566 | return 0; |
14f9c5c9 | 3567 | |
1f704f76 | 3568 | if (func_type->num_fields () != n_actuals) |
de93309a | 3569 | return 0; |
14f9c5c9 | 3570 | |
de93309a SM |
3571 | for (i = 0; i < n_actuals; i += 1) |
3572 | { | |
3573 | if (actuals[i] == NULL) | |
dda83cd7 | 3574 | return 0; |
de93309a | 3575 | else |
dda83cd7 SM |
3576 | { |
3577 | struct type *ftype = ada_check_typedef (func_type->field (i).type ()); | |
3578 | struct type *atype = ada_check_typedef (value_type (actuals[i])); | |
14f9c5c9 | 3579 | |
db2534b7 | 3580 | if (!ada_type_match (ftype, atype)) |
dda83cd7 SM |
3581 | return 0; |
3582 | } | |
de93309a SM |
3583 | } |
3584 | return 1; | |
3585 | } | |
d2e4a39e | 3586 | |
de93309a SM |
3587 | /* False iff function type FUNC_TYPE definitely does not produce a value |
3588 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3589 | FUNC_TYPE is not a valid function type with a non-null return type | |
3590 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
14f9c5c9 | 3591 | |
de93309a SM |
3592 | static int |
3593 | return_match (struct type *func_type, struct type *context_type) | |
3594 | { | |
3595 | struct type *return_type; | |
d2e4a39e | 3596 | |
de93309a SM |
3597 | if (func_type == NULL) |
3598 | return 1; | |
14f9c5c9 | 3599 | |
78134374 | 3600 | if (func_type->code () == TYPE_CODE_FUNC) |
de93309a SM |
3601 | return_type = get_base_type (TYPE_TARGET_TYPE (func_type)); |
3602 | else | |
3603 | return_type = get_base_type (func_type); | |
3604 | if (return_type == NULL) | |
3605 | return 1; | |
76a01679 | 3606 | |
de93309a | 3607 | context_type = get_base_type (context_type); |
14f9c5c9 | 3608 | |
78134374 | 3609 | if (return_type->code () == TYPE_CODE_ENUM) |
de93309a SM |
3610 | return context_type == NULL || return_type == context_type; |
3611 | else if (context_type == NULL) | |
78134374 | 3612 | return return_type->code () != TYPE_CODE_VOID; |
de93309a | 3613 | else |
78134374 | 3614 | return return_type->code () == context_type->code (); |
de93309a | 3615 | } |
14f9c5c9 | 3616 | |
14f9c5c9 | 3617 | |
1bfa81ac | 3618 | /* Returns the index in SYMS that contains the symbol for the |
de93309a SM |
3619 | function (if any) that matches the types of the NARGS arguments in |
3620 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match | |
3621 | that returns that type, then eliminate matches that don't. If | |
3622 | CONTEXT_TYPE is void and there is at least one match that does not | |
3623 | return void, eliminate all matches that do. | |
14f9c5c9 | 3624 | |
de93309a SM |
3625 | Asks the user if there is more than one match remaining. Returns -1 |
3626 | if there is no such symbol or none is selected. NAME is used | |
3627 | solely for messages. May re-arrange and modify SYMS in | |
3628 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3629 | |
de93309a | 3630 | static int |
d1183b06 TT |
3631 | ada_resolve_function (std::vector<struct block_symbol> &syms, |
3632 | struct value **args, int nargs, | |
dda83cd7 | 3633 | const char *name, struct type *context_type, |
7056f312 | 3634 | bool parse_completion) |
de93309a SM |
3635 | { |
3636 | int fallback; | |
3637 | int k; | |
3638 | int m; /* Number of hits */ | |
14f9c5c9 | 3639 | |
de93309a SM |
3640 | m = 0; |
3641 | /* In the first pass of the loop, we only accept functions matching | |
3642 | context_type. If none are found, we add a second pass of the loop | |
3643 | where every function is accepted. */ | |
3644 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
3645 | { | |
d1183b06 | 3646 | for (k = 0; k < syms.size (); k += 1) |
dda83cd7 SM |
3647 | { |
3648 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].symbol)); | |
5b4ee69b | 3649 | |
dda83cd7 SM |
3650 | if (ada_args_match (syms[k].symbol, args, nargs) |
3651 | && (fallback || return_match (type, context_type))) | |
3652 | { | |
3653 | syms[m] = syms[k]; | |
3654 | m += 1; | |
3655 | } | |
3656 | } | |
14f9c5c9 AS |
3657 | } |
3658 | ||
de93309a SM |
3659 | /* If we got multiple matches, ask the user which one to use. Don't do this |
3660 | interactive thing during completion, though, as the purpose of the | |
3661 | completion is providing a list of all possible matches. Prompting the | |
3662 | user to filter it down would be completely unexpected in this case. */ | |
3663 | if (m == 0) | |
3664 | return -1; | |
3665 | else if (m > 1 && !parse_completion) | |
3666 | { | |
3667 | printf_filtered (_("Multiple matches for %s\n"), name); | |
d1183b06 | 3668 | user_select_syms (syms.data (), m, 1); |
de93309a SM |
3669 | return 0; |
3670 | } | |
3671 | return 0; | |
14f9c5c9 AS |
3672 | } |
3673 | ||
14f9c5c9 AS |
3674 | /* Type-class predicates */ |
3675 | ||
4c4b4cd2 PH |
3676 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3677 | or FLOAT). */ | |
14f9c5c9 AS |
3678 | |
3679 | static int | |
d2e4a39e | 3680 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3681 | { |
3682 | if (type == NULL) | |
3683 | return 0; | |
d2e4a39e AS |
3684 | else |
3685 | { | |
78134374 | 3686 | switch (type->code ()) |
dda83cd7 SM |
3687 | { |
3688 | case TYPE_CODE_INT: | |
3689 | case TYPE_CODE_FLT: | |
c04da66c | 3690 | case TYPE_CODE_FIXED_POINT: |
dda83cd7 SM |
3691 | return 1; |
3692 | case TYPE_CODE_RANGE: | |
3693 | return (type == TYPE_TARGET_TYPE (type) | |
3694 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3695 | default: | |
3696 | return 0; | |
3697 | } | |
d2e4a39e | 3698 | } |
14f9c5c9 AS |
3699 | } |
3700 | ||
4c4b4cd2 | 3701 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3702 | |
3703 | static int | |
d2e4a39e | 3704 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3705 | { |
3706 | if (type == NULL) | |
3707 | return 0; | |
d2e4a39e AS |
3708 | else |
3709 | { | |
78134374 | 3710 | switch (type->code ()) |
dda83cd7 SM |
3711 | { |
3712 | case TYPE_CODE_INT: | |
3713 | return 1; | |
3714 | case TYPE_CODE_RANGE: | |
3715 | return (type == TYPE_TARGET_TYPE (type) | |
3716 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3717 | default: | |
3718 | return 0; | |
3719 | } | |
d2e4a39e | 3720 | } |
14f9c5c9 AS |
3721 | } |
3722 | ||
4c4b4cd2 | 3723 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3724 | |
3725 | static int | |
d2e4a39e | 3726 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3727 | { |
3728 | if (type == NULL) | |
3729 | return 0; | |
d2e4a39e AS |
3730 | else |
3731 | { | |
78134374 | 3732 | switch (type->code ()) |
dda83cd7 SM |
3733 | { |
3734 | case TYPE_CODE_INT: | |
3735 | case TYPE_CODE_RANGE: | |
3736 | case TYPE_CODE_ENUM: | |
3737 | case TYPE_CODE_FLT: | |
c04da66c | 3738 | case TYPE_CODE_FIXED_POINT: |
dda83cd7 SM |
3739 | return 1; |
3740 | default: | |
3741 | return 0; | |
3742 | } | |
d2e4a39e | 3743 | } |
14f9c5c9 AS |
3744 | } |
3745 | ||
4c4b4cd2 | 3746 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3747 | |
3748 | static int | |
d2e4a39e | 3749 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3750 | { |
3751 | if (type == NULL) | |
3752 | return 0; | |
d2e4a39e AS |
3753 | else |
3754 | { | |
78134374 | 3755 | switch (type->code ()) |
dda83cd7 SM |
3756 | { |
3757 | case TYPE_CODE_INT: | |
3758 | case TYPE_CODE_RANGE: | |
3759 | case TYPE_CODE_ENUM: | |
3760 | case TYPE_CODE_BOOL: | |
3761 | return 1; | |
3762 | default: | |
3763 | return 0; | |
3764 | } | |
d2e4a39e | 3765 | } |
14f9c5c9 AS |
3766 | } |
3767 | ||
4c4b4cd2 PH |
3768 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3769 | a user-defined function. Errs on the side of pre-defined operators | |
3770 | (i.e., result 0). */ | |
14f9c5c9 AS |
3771 | |
3772 | static int | |
d2e4a39e | 3773 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3774 | { |
76a01679 | 3775 | struct type *type0 = |
df407dfe | 3776 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3777 | struct type *type1 = |
df407dfe | 3778 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3779 | |
4c4b4cd2 PH |
3780 | if (type0 == NULL) |
3781 | return 0; | |
3782 | ||
14f9c5c9 AS |
3783 | switch (op) |
3784 | { | |
3785 | default: | |
3786 | return 0; | |
3787 | ||
3788 | case BINOP_ADD: | |
3789 | case BINOP_SUB: | |
3790 | case BINOP_MUL: | |
3791 | case BINOP_DIV: | |
d2e4a39e | 3792 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3793 | |
3794 | case BINOP_REM: | |
3795 | case BINOP_MOD: | |
3796 | case BINOP_BITWISE_AND: | |
3797 | case BINOP_BITWISE_IOR: | |
3798 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3799 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3800 | |
3801 | case BINOP_EQUAL: | |
3802 | case BINOP_NOTEQUAL: | |
3803 | case BINOP_LESS: | |
3804 | case BINOP_GTR: | |
3805 | case BINOP_LEQ: | |
3806 | case BINOP_GEQ: | |
d2e4a39e | 3807 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3808 | |
3809 | case BINOP_CONCAT: | |
ee90b9ab | 3810 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3811 | |
3812 | case BINOP_EXP: | |
d2e4a39e | 3813 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3814 | |
3815 | case UNOP_NEG: | |
3816 | case UNOP_PLUS: | |
3817 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3818 | case UNOP_ABS: |
3819 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3820 | |
3821 | } | |
3822 | } | |
3823 | \f | |
dda83cd7 | 3824 | /* Renaming */ |
14f9c5c9 | 3825 | |
aeb5907d JB |
3826 | /* NOTES: |
3827 | ||
3828 | 1. In the following, we assume that a renaming type's name may | |
3829 | have an ___XD suffix. It would be nice if this went away at some | |
3830 | point. | |
3831 | 2. We handle both the (old) purely type-based representation of | |
3832 | renamings and the (new) variable-based encoding. At some point, | |
3833 | it is devoutly to be hoped that the former goes away | |
3834 | (FIXME: hilfinger-2007-07-09). | |
3835 | 3. Subprogram renamings are not implemented, although the XRS | |
3836 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3837 | ||
3838 | /* If SYM encodes a renaming, | |
3839 | ||
3840 | <renaming> renames <renamed entity>, | |
3841 | ||
3842 | sets *LEN to the length of the renamed entity's name, | |
3843 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3844 | the string describing the subcomponent selected from the renamed | |
0963b4bd | 3845 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming |
aeb5907d JB |
3846 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR |
3847 | are undefined). Otherwise, returns a value indicating the category | |
3848 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3849 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3850 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3851 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3852 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3853 | may be NULL, in which case they are not assigned. | |
3854 | ||
3855 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3856 | ||
3857 | enum ada_renaming_category | |
3858 | ada_parse_renaming (struct symbol *sym, | |
3859 | const char **renamed_entity, int *len, | |
3860 | const char **renaming_expr) | |
3861 | { | |
3862 | enum ada_renaming_category kind; | |
3863 | const char *info; | |
3864 | const char *suffix; | |
3865 | ||
3866 | if (sym == NULL) | |
3867 | return ADA_NOT_RENAMING; | |
3868 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3869 | { |
aeb5907d JB |
3870 | default: |
3871 | return ADA_NOT_RENAMING; | |
aeb5907d JB |
3872 | case LOC_LOCAL: |
3873 | case LOC_STATIC: | |
3874 | case LOC_COMPUTED: | |
3875 | case LOC_OPTIMIZED_OUT: | |
987012b8 | 3876 | info = strstr (sym->linkage_name (), "___XR"); |
aeb5907d JB |
3877 | if (info == NULL) |
3878 | return ADA_NOT_RENAMING; | |
3879 | switch (info[5]) | |
3880 | { | |
3881 | case '_': | |
3882 | kind = ADA_OBJECT_RENAMING; | |
3883 | info += 6; | |
3884 | break; | |
3885 | case 'E': | |
3886 | kind = ADA_EXCEPTION_RENAMING; | |
3887 | info += 7; | |
3888 | break; | |
3889 | case 'P': | |
3890 | kind = ADA_PACKAGE_RENAMING; | |
3891 | info += 7; | |
3892 | break; | |
3893 | case 'S': | |
3894 | kind = ADA_SUBPROGRAM_RENAMING; | |
3895 | info += 7; | |
3896 | break; | |
3897 | default: | |
3898 | return ADA_NOT_RENAMING; | |
3899 | } | |
14f9c5c9 | 3900 | } |
4c4b4cd2 | 3901 | |
de93309a SM |
3902 | if (renamed_entity != NULL) |
3903 | *renamed_entity = info; | |
3904 | suffix = strstr (info, "___XE"); | |
3905 | if (suffix == NULL || suffix == info) | |
3906 | return ADA_NOT_RENAMING; | |
3907 | if (len != NULL) | |
3908 | *len = strlen (info) - strlen (suffix); | |
3909 | suffix += 5; | |
3910 | if (renaming_expr != NULL) | |
3911 | *renaming_expr = suffix; | |
3912 | return kind; | |
3913 | } | |
3914 | ||
3915 | /* Compute the value of the given RENAMING_SYM, which is expected to | |
3916 | be a symbol encoding a renaming expression. BLOCK is the block | |
3917 | used to evaluate the renaming. */ | |
3918 | ||
3919 | static struct value * | |
3920 | ada_read_renaming_var_value (struct symbol *renaming_sym, | |
3921 | const struct block *block) | |
3922 | { | |
3923 | const char *sym_name; | |
3924 | ||
987012b8 | 3925 | sym_name = renaming_sym->linkage_name (); |
de93309a SM |
3926 | expression_up expr = parse_exp_1 (&sym_name, 0, block, 0); |
3927 | return evaluate_expression (expr.get ()); | |
3928 | } | |
3929 | \f | |
3930 | ||
dda83cd7 | 3931 | /* Evaluation: Function Calls */ |
de93309a SM |
3932 | |
3933 | /* Return an lvalue containing the value VAL. This is the identity on | |
3934 | lvalues, and otherwise has the side-effect of allocating memory | |
3935 | in the inferior where a copy of the value contents is copied. */ | |
3936 | ||
3937 | static struct value * | |
3938 | ensure_lval (struct value *val) | |
3939 | { | |
3940 | if (VALUE_LVAL (val) == not_lval | |
3941 | || VALUE_LVAL (val) == lval_internalvar) | |
3942 | { | |
3943 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); | |
3944 | const CORE_ADDR addr = | |
dda83cd7 | 3945 | value_as_long (value_allocate_space_in_inferior (len)); |
de93309a SM |
3946 | |
3947 | VALUE_LVAL (val) = lval_memory; | |
3948 | set_value_address (val, addr); | |
3949 | write_memory (addr, value_contents (val), len); | |
3950 | } | |
3951 | ||
3952 | return val; | |
3953 | } | |
3954 | ||
3955 | /* Given ARG, a value of type (pointer or reference to a)* | |
3956 | structure/union, extract the component named NAME from the ultimate | |
3957 | target structure/union and return it as a value with its | |
3958 | appropriate type. | |
3959 | ||
3960 | The routine searches for NAME among all members of the structure itself | |
3961 | and (recursively) among all members of any wrapper members | |
3962 | (e.g., '_parent'). | |
3963 | ||
3964 | If NO_ERR, then simply return NULL in case of error, rather than | |
3965 | calling error. */ | |
3966 | ||
3967 | static struct value * | |
3968 | ada_value_struct_elt (struct value *arg, const char *name, int no_err) | |
3969 | { | |
3970 | struct type *t, *t1; | |
3971 | struct value *v; | |
3972 | int check_tag; | |
3973 | ||
3974 | v = NULL; | |
3975 | t1 = t = ada_check_typedef (value_type (arg)); | |
78134374 | 3976 | if (t->code () == TYPE_CODE_REF) |
de93309a SM |
3977 | { |
3978 | t1 = TYPE_TARGET_TYPE (t); | |
3979 | if (t1 == NULL) | |
3980 | goto BadValue; | |
3981 | t1 = ada_check_typedef (t1); | |
78134374 | 3982 | if (t1->code () == TYPE_CODE_PTR) |
dda83cd7 SM |
3983 | { |
3984 | arg = coerce_ref (arg); | |
3985 | t = t1; | |
3986 | } | |
de93309a SM |
3987 | } |
3988 | ||
78134374 | 3989 | while (t->code () == TYPE_CODE_PTR) |
de93309a SM |
3990 | { |
3991 | t1 = TYPE_TARGET_TYPE (t); | |
3992 | if (t1 == NULL) | |
3993 | goto BadValue; | |
3994 | t1 = ada_check_typedef (t1); | |
78134374 | 3995 | if (t1->code () == TYPE_CODE_PTR) |
dda83cd7 SM |
3996 | { |
3997 | arg = value_ind (arg); | |
3998 | t = t1; | |
3999 | } | |
de93309a | 4000 | else |
dda83cd7 | 4001 | break; |
de93309a | 4002 | } |
aeb5907d | 4003 | |
78134374 | 4004 | if (t1->code () != TYPE_CODE_STRUCT && t1->code () != TYPE_CODE_UNION) |
de93309a | 4005 | goto BadValue; |
52ce6436 | 4006 | |
de93309a SM |
4007 | if (t1 == t) |
4008 | v = ada_search_struct_field (name, arg, 0, t); | |
4009 | else | |
4010 | { | |
4011 | int bit_offset, bit_size, byte_offset; | |
4012 | struct type *field_type; | |
4013 | CORE_ADDR address; | |
a5ee536b | 4014 | |
78134374 | 4015 | if (t->code () == TYPE_CODE_PTR) |
de93309a SM |
4016 | address = value_address (ada_value_ind (arg)); |
4017 | else | |
4018 | address = value_address (ada_coerce_ref (arg)); | |
d2e4a39e | 4019 | |
de93309a | 4020 | /* Check to see if this is a tagged type. We also need to handle |
dda83cd7 SM |
4021 | the case where the type is a reference to a tagged type, but |
4022 | we have to be careful to exclude pointers to tagged types. | |
4023 | The latter should be shown as usual (as a pointer), whereas | |
4024 | a reference should mostly be transparent to the user. */ | |
14f9c5c9 | 4025 | |
de93309a | 4026 | if (ada_is_tagged_type (t1, 0) |
dda83cd7 SM |
4027 | || (t1->code () == TYPE_CODE_REF |
4028 | && ada_is_tagged_type (TYPE_TARGET_TYPE (t1), 0))) | |
4029 | { | |
4030 | /* We first try to find the searched field in the current type. | |
de93309a | 4031 | If not found then let's look in the fixed type. */ |
14f9c5c9 | 4032 | |
dda83cd7 SM |
4033 | if (!find_struct_field (name, t1, 0, |
4034 | &field_type, &byte_offset, &bit_offset, | |
4035 | &bit_size, NULL)) | |
de93309a SM |
4036 | check_tag = 1; |
4037 | else | |
4038 | check_tag = 0; | |
dda83cd7 | 4039 | } |
de93309a SM |
4040 | else |
4041 | check_tag = 0; | |
c3e5cd34 | 4042 | |
de93309a SM |
4043 | /* Convert to fixed type in all cases, so that we have proper |
4044 | offsets to each field in unconstrained record types. */ | |
4045 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, | |
4046 | address, NULL, check_tag); | |
4047 | ||
24aa1b02 TT |
4048 | /* Resolve the dynamic type as well. */ |
4049 | arg = value_from_contents_and_address (t1, nullptr, address); | |
4050 | t1 = value_type (arg); | |
4051 | ||
de93309a | 4052 | if (find_struct_field (name, t1, 0, |
dda83cd7 SM |
4053 | &field_type, &byte_offset, &bit_offset, |
4054 | &bit_size, NULL)) | |
4055 | { | |
4056 | if (bit_size != 0) | |
4057 | { | |
4058 | if (t->code () == TYPE_CODE_REF) | |
4059 | arg = ada_coerce_ref (arg); | |
4060 | else | |
4061 | arg = ada_value_ind (arg); | |
4062 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, | |
4063 | bit_offset, bit_size, | |
4064 | field_type); | |
4065 | } | |
4066 | else | |
4067 | v = value_at_lazy (field_type, address + byte_offset); | |
4068 | } | |
c3e5cd34 | 4069 | } |
14f9c5c9 | 4070 | |
de93309a SM |
4071 | if (v != NULL || no_err) |
4072 | return v; | |
4073 | else | |
4074 | error (_("There is no member named %s."), name); | |
4075 | ||
4076 | BadValue: | |
4077 | if (no_err) | |
4078 | return NULL; | |
4079 | else | |
4080 | error (_("Attempt to extract a component of " | |
4081 | "a value that is not a record.")); | |
14f9c5c9 AS |
4082 | } |
4083 | ||
4084 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
4085 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
4086 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 4087 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 4088 | |
a93c0eb6 | 4089 | struct value * |
40bc484c | 4090 | ada_convert_actual (struct value *actual, struct type *formal_type0) |
14f9c5c9 | 4091 | { |
df407dfe | 4092 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 4093 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e | 4094 | struct type *formal_target = |
78134374 | 4095 | formal_type->code () == TYPE_CODE_PTR |
61ee279c | 4096 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e | 4097 | struct type *actual_target = |
78134374 | 4098 | actual_type->code () == TYPE_CODE_PTR |
61ee279c | 4099 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 4100 | |
4c4b4cd2 | 4101 | if (ada_is_array_descriptor_type (formal_target) |
78134374 | 4102 | && actual_target->code () == TYPE_CODE_ARRAY) |
40bc484c | 4103 | return make_array_descriptor (formal_type, actual); |
78134374 SM |
4104 | else if (formal_type->code () == TYPE_CODE_PTR |
4105 | || formal_type->code () == TYPE_CODE_REF) | |
14f9c5c9 | 4106 | { |
a84a8a0d | 4107 | struct value *result; |
5b4ee69b | 4108 | |
78134374 | 4109 | if (formal_target->code () == TYPE_CODE_ARRAY |
dda83cd7 | 4110 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 4111 | result = desc_data (actual); |
78134374 | 4112 | else if (formal_type->code () != TYPE_CODE_PTR) |
dda83cd7 SM |
4113 | { |
4114 | if (VALUE_LVAL (actual) != lval_memory) | |
4115 | { | |
4116 | struct value *val; | |
4117 | ||
4118 | actual_type = ada_check_typedef (value_type (actual)); | |
4119 | val = allocate_value (actual_type); | |
4120 | memcpy ((char *) value_contents_raw (val), | |
4121 | (char *) value_contents (actual), | |
4122 | TYPE_LENGTH (actual_type)); | |
4123 | actual = ensure_lval (val); | |
4124 | } | |
4125 | result = value_addr (actual); | |
4126 | } | |
a84a8a0d JB |
4127 | else |
4128 | return actual; | |
b1af9e97 | 4129 | return value_cast_pointers (formal_type, result, 0); |
14f9c5c9 | 4130 | } |
78134374 | 4131 | else if (actual_type->code () == TYPE_CODE_PTR) |
14f9c5c9 | 4132 | return ada_value_ind (actual); |
8344af1e JB |
4133 | else if (ada_is_aligner_type (formal_type)) |
4134 | { | |
4135 | /* We need to turn this parameter into an aligner type | |
4136 | as well. */ | |
4137 | struct value *aligner = allocate_value (formal_type); | |
4138 | struct value *component = ada_value_struct_elt (aligner, "F", 0); | |
4139 | ||
4140 | value_assign_to_component (aligner, component, actual); | |
4141 | return aligner; | |
4142 | } | |
14f9c5c9 AS |
4143 | |
4144 | return actual; | |
4145 | } | |
4146 | ||
438c98a1 JB |
4147 | /* Convert VALUE (which must be an address) to a CORE_ADDR that is a pointer of |
4148 | type TYPE. This is usually an inefficient no-op except on some targets | |
4149 | (such as AVR) where the representation of a pointer and an address | |
4150 | differs. */ | |
4151 | ||
4152 | static CORE_ADDR | |
4153 | value_pointer (struct value *value, struct type *type) | |
4154 | { | |
438c98a1 | 4155 | unsigned len = TYPE_LENGTH (type); |
224c3ddb | 4156 | gdb_byte *buf = (gdb_byte *) alloca (len); |
438c98a1 JB |
4157 | CORE_ADDR addr; |
4158 | ||
4159 | addr = value_address (value); | |
8ee511af | 4160 | gdbarch_address_to_pointer (type->arch (), type, buf, addr); |
34877895 | 4161 | addr = extract_unsigned_integer (buf, len, type_byte_order (type)); |
438c98a1 JB |
4162 | return addr; |
4163 | } | |
4164 | ||
14f9c5c9 | 4165 | |
4c4b4cd2 PH |
4166 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
4167 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 4168 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
4169 | to-descriptor type rather than a descriptor type), a struct value * |
4170 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 4171 | |
d2e4a39e | 4172 | static struct value * |
40bc484c | 4173 | make_array_descriptor (struct type *type, struct value *arr) |
14f9c5c9 | 4174 | { |
d2e4a39e AS |
4175 | struct type *bounds_type = desc_bounds_type (type); |
4176 | struct type *desc_type = desc_base_type (type); | |
4177 | struct value *descriptor = allocate_value (desc_type); | |
4178 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 4179 | int i; |
d2e4a39e | 4180 | |
0963b4bd MS |
4181 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); |
4182 | i > 0; i -= 1) | |
14f9c5c9 | 4183 | { |
19f220c3 JK |
4184 | modify_field (value_type (bounds), value_contents_writeable (bounds), |
4185 | ada_array_bound (arr, i, 0), | |
4186 | desc_bound_bitpos (bounds_type, i, 0), | |
4187 | desc_bound_bitsize (bounds_type, i, 0)); | |
4188 | modify_field (value_type (bounds), value_contents_writeable (bounds), | |
4189 | ada_array_bound (arr, i, 1), | |
4190 | desc_bound_bitpos (bounds_type, i, 1), | |
4191 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 4192 | } |
d2e4a39e | 4193 | |
40bc484c | 4194 | bounds = ensure_lval (bounds); |
d2e4a39e | 4195 | |
19f220c3 JK |
4196 | modify_field (value_type (descriptor), |
4197 | value_contents_writeable (descriptor), | |
4198 | value_pointer (ensure_lval (arr), | |
940da03e | 4199 | desc_type->field (0).type ()), |
19f220c3 JK |
4200 | fat_pntr_data_bitpos (desc_type), |
4201 | fat_pntr_data_bitsize (desc_type)); | |
4202 | ||
4203 | modify_field (value_type (descriptor), | |
4204 | value_contents_writeable (descriptor), | |
4205 | value_pointer (bounds, | |
940da03e | 4206 | desc_type->field (1).type ()), |
19f220c3 JK |
4207 | fat_pntr_bounds_bitpos (desc_type), |
4208 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 4209 | |
40bc484c | 4210 | descriptor = ensure_lval (descriptor); |
14f9c5c9 | 4211 | |
78134374 | 4212 | if (type->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
4213 | return value_addr (descriptor); |
4214 | else | |
4215 | return descriptor; | |
4216 | } | |
14f9c5c9 | 4217 | \f |
dda83cd7 | 4218 | /* Symbol Cache Module */ |
3d9434b5 | 4219 | |
3d9434b5 | 4220 | /* Performance measurements made as of 2010-01-15 indicate that |
ee01b665 | 4221 | this cache does bring some noticeable improvements. Depending |
3d9434b5 JB |
4222 | on the type of entity being printed, the cache can make it as much |
4223 | as an order of magnitude faster than without it. | |
4224 | ||
4225 | The descriptive type DWARF extension has significantly reduced | |
4226 | the need for this cache, at least when DWARF is being used. However, | |
4227 | even in this case, some expensive name-based symbol searches are still | |
4228 | sometimes necessary - to find an XVZ variable, mostly. */ | |
4229 | ||
ee01b665 JB |
4230 | /* Return the symbol cache associated to the given program space PSPACE. |
4231 | If not allocated for this PSPACE yet, allocate and initialize one. */ | |
3d9434b5 | 4232 | |
ee01b665 JB |
4233 | static struct ada_symbol_cache * |
4234 | ada_get_symbol_cache (struct program_space *pspace) | |
4235 | { | |
4236 | struct ada_pspace_data *pspace_data = get_ada_pspace_data (pspace); | |
ee01b665 | 4237 | |
bdcccc56 TT |
4238 | if (pspace_data->sym_cache == nullptr) |
4239 | pspace_data->sym_cache.reset (new ada_symbol_cache); | |
ee01b665 | 4240 | |
bdcccc56 | 4241 | return pspace_data->sym_cache.get (); |
ee01b665 | 4242 | } |
3d9434b5 JB |
4243 | |
4244 | /* Clear all entries from the symbol cache. */ | |
4245 | ||
4246 | static void | |
bdcccc56 | 4247 | ada_clear_symbol_cache () |
3d9434b5 | 4248 | { |
bdcccc56 TT |
4249 | struct ada_pspace_data *pspace_data |
4250 | = get_ada_pspace_data (current_program_space); | |
ee01b665 | 4251 | |
bdcccc56 TT |
4252 | if (pspace_data->sym_cache != nullptr) |
4253 | pspace_data->sym_cache.reset (); | |
3d9434b5 JB |
4254 | } |
4255 | ||
fe978cb0 | 4256 | /* Search our cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4257 | Return it if found, or NULL otherwise. */ |
4258 | ||
4259 | static struct cache_entry ** | |
fe978cb0 | 4260 | find_entry (const char *name, domain_enum domain) |
3d9434b5 | 4261 | { |
ee01b665 JB |
4262 | struct ada_symbol_cache *sym_cache |
4263 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4264 | int h = msymbol_hash (name) % HASH_SIZE; |
4265 | struct cache_entry **e; | |
4266 | ||
ee01b665 | 4267 | for (e = &sym_cache->root[h]; *e != NULL; e = &(*e)->next) |
3d9434b5 | 4268 | { |
fe978cb0 | 4269 | if (domain == (*e)->domain && strcmp (name, (*e)->name) == 0) |
dda83cd7 | 4270 | return e; |
3d9434b5 JB |
4271 | } |
4272 | return NULL; | |
4273 | } | |
4274 | ||
fe978cb0 | 4275 | /* Search the symbol cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4276 | Return 1 if found, 0 otherwise. |
4277 | ||
4278 | If an entry was found and SYM is not NULL, set *SYM to the entry's | |
4279 | SYM. Same principle for BLOCK if not NULL. */ | |
96d887e8 | 4280 | |
96d887e8 | 4281 | static int |
fe978cb0 | 4282 | lookup_cached_symbol (const char *name, domain_enum domain, |
dda83cd7 | 4283 | struct symbol **sym, const struct block **block) |
96d887e8 | 4284 | { |
fe978cb0 | 4285 | struct cache_entry **e = find_entry (name, domain); |
3d9434b5 JB |
4286 | |
4287 | if (e == NULL) | |
4288 | return 0; | |
4289 | if (sym != NULL) | |
4290 | *sym = (*e)->sym; | |
4291 | if (block != NULL) | |
4292 | *block = (*e)->block; | |
4293 | return 1; | |
96d887e8 PH |
4294 | } |
4295 | ||
3d9434b5 | 4296 | /* Assuming that (SYM, BLOCK) is the result of the lookup of NAME |
fe978cb0 | 4297 | in domain DOMAIN, save this result in our symbol cache. */ |
3d9434b5 | 4298 | |
96d887e8 | 4299 | static void |
fe978cb0 | 4300 | cache_symbol (const char *name, domain_enum domain, struct symbol *sym, |
dda83cd7 | 4301 | const struct block *block) |
96d887e8 | 4302 | { |
ee01b665 JB |
4303 | struct ada_symbol_cache *sym_cache |
4304 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 | 4305 | int h; |
3d9434b5 JB |
4306 | struct cache_entry *e; |
4307 | ||
1994afbf DE |
4308 | /* Symbols for builtin types don't have a block. |
4309 | For now don't cache such symbols. */ | |
4310 | if (sym != NULL && !SYMBOL_OBJFILE_OWNED (sym)) | |
4311 | return; | |
4312 | ||
3d9434b5 JB |
4313 | /* If the symbol is a local symbol, then do not cache it, as a search |
4314 | for that symbol depends on the context. To determine whether | |
4315 | the symbol is local or not, we check the block where we found it | |
4316 | against the global and static blocks of its associated symtab. */ | |
4317 | if (sym | |
08be3fe3 | 4318 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4319 | GLOBAL_BLOCK) != block |
08be3fe3 | 4320 | && BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symbol_symtab (sym)), |
439247b6 | 4321 | STATIC_BLOCK) != block) |
3d9434b5 JB |
4322 | return; |
4323 | ||
4324 | h = msymbol_hash (name) % HASH_SIZE; | |
e39db4db | 4325 | e = XOBNEW (&sym_cache->cache_space, cache_entry); |
ee01b665 JB |
4326 | e->next = sym_cache->root[h]; |
4327 | sym_cache->root[h] = e; | |
2ef5453b | 4328 | e->name = obstack_strdup (&sym_cache->cache_space, name); |
3d9434b5 | 4329 | e->sym = sym; |
fe978cb0 | 4330 | e->domain = domain; |
3d9434b5 | 4331 | e->block = block; |
96d887e8 | 4332 | } |
4c4b4cd2 | 4333 | \f |
dda83cd7 | 4334 | /* Symbol Lookup */ |
4c4b4cd2 | 4335 | |
b5ec771e PA |
4336 | /* Return the symbol name match type that should be used used when |
4337 | searching for all symbols matching LOOKUP_NAME. | |
c0431670 JB |
4338 | |
4339 | LOOKUP_NAME is expected to be a symbol name after transformation | |
f98b2e33 | 4340 | for Ada lookups. */ |
c0431670 | 4341 | |
b5ec771e PA |
4342 | static symbol_name_match_type |
4343 | name_match_type_from_name (const char *lookup_name) | |
c0431670 | 4344 | { |
b5ec771e PA |
4345 | return (strstr (lookup_name, "__") == NULL |
4346 | ? symbol_name_match_type::WILD | |
4347 | : symbol_name_match_type::FULL); | |
c0431670 JB |
4348 | } |
4349 | ||
4c4b4cd2 PH |
4350 | /* Return the result of a standard (literal, C-like) lookup of NAME in |
4351 | given DOMAIN, visible from lexical block BLOCK. */ | |
4352 | ||
4353 | static struct symbol * | |
4354 | standard_lookup (const char *name, const struct block *block, | |
dda83cd7 | 4355 | domain_enum domain) |
4c4b4cd2 | 4356 | { |
acbd605d | 4357 | /* Initialize it just to avoid a GCC false warning. */ |
6640a367 | 4358 | struct block_symbol sym = {}; |
4c4b4cd2 | 4359 | |
d12307c1 PMR |
4360 | if (lookup_cached_symbol (name, domain, &sym.symbol, NULL)) |
4361 | return sym.symbol; | |
a2cd4f14 | 4362 | ada_lookup_encoded_symbol (name, block, domain, &sym); |
d12307c1 PMR |
4363 | cache_symbol (name, domain, sym.symbol, sym.block); |
4364 | return sym.symbol; | |
4c4b4cd2 PH |
4365 | } |
4366 | ||
4367 | ||
4368 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
1bfa81ac | 4369 | in the symbol fields of SYMS. We treat enumerals as functions, |
4c4b4cd2 PH |
4370 | since they contend in overloading in the same way. */ |
4371 | static int | |
d1183b06 | 4372 | is_nonfunction (const std::vector<struct block_symbol> &syms) |
4c4b4cd2 | 4373 | { |
d1183b06 TT |
4374 | for (const block_symbol &sym : syms) |
4375 | if (SYMBOL_TYPE (sym.symbol)->code () != TYPE_CODE_FUNC | |
4376 | && (SYMBOL_TYPE (sym.symbol)->code () != TYPE_CODE_ENUM | |
4377 | || SYMBOL_CLASS (sym.symbol) != LOC_CONST)) | |
14f9c5c9 AS |
4378 | return 1; |
4379 | ||
4380 | return 0; | |
4381 | } | |
4382 | ||
4383 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4384 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4385 | |
4386 | static int | |
d2e4a39e | 4387 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4388 | { |
d2e4a39e | 4389 | if (type0 == type1) |
14f9c5c9 | 4390 | return 1; |
d2e4a39e | 4391 | if (type0 == NULL || type1 == NULL |
78134374 | 4392 | || type0->code () != type1->code ()) |
14f9c5c9 | 4393 | return 0; |
78134374 SM |
4394 | if ((type0->code () == TYPE_CODE_STRUCT |
4395 | || type0->code () == TYPE_CODE_ENUM) | |
14f9c5c9 | 4396 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL |
4c4b4cd2 | 4397 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4398 | return 1; |
d2e4a39e | 4399 | |
14f9c5c9 AS |
4400 | return 0; |
4401 | } | |
4402 | ||
4403 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4404 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4405 | |
4406 | static int | |
d2e4a39e | 4407 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4408 | { |
4409 | if (sym0 == sym1) | |
4410 | return 1; | |
176620f1 | 4411 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4412 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4413 | return 0; | |
4414 | ||
d2e4a39e | 4415 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4416 | { |
4417 | case LOC_UNDEF: | |
4418 | return 1; | |
4419 | case LOC_TYPEDEF: | |
4420 | { | |
dda83cd7 SM |
4421 | struct type *type0 = SYMBOL_TYPE (sym0); |
4422 | struct type *type1 = SYMBOL_TYPE (sym1); | |
4423 | const char *name0 = sym0->linkage_name (); | |
4424 | const char *name1 = sym1->linkage_name (); | |
4425 | int len0 = strlen (name0); | |
4426 | ||
4427 | return | |
4428 | type0->code () == type1->code () | |
4429 | && (equiv_types (type0, type1) | |
4430 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4431 | && startswith (name1 + len0, "___XV"))); | |
14f9c5c9 AS |
4432 | } |
4433 | case LOC_CONST: | |
4434 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
dda83cd7 | 4435 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
4b610737 TT |
4436 | |
4437 | case LOC_STATIC: | |
4438 | { | |
dda83cd7 SM |
4439 | const char *name0 = sym0->linkage_name (); |
4440 | const char *name1 = sym1->linkage_name (); | |
4441 | return (strcmp (name0, name1) == 0 | |
4442 | && SYMBOL_VALUE_ADDRESS (sym0) == SYMBOL_VALUE_ADDRESS (sym1)); | |
4b610737 TT |
4443 | } |
4444 | ||
d2e4a39e AS |
4445 | default: |
4446 | return 0; | |
14f9c5c9 AS |
4447 | } |
4448 | } | |
4449 | ||
d1183b06 TT |
4450 | /* Append (SYM,BLOCK) to the end of the array of struct block_symbol |
4451 | records in RESULT. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4452 | |
4453 | static void | |
d1183b06 | 4454 | add_defn_to_vec (std::vector<struct block_symbol> &result, |
dda83cd7 SM |
4455 | struct symbol *sym, |
4456 | const struct block *block) | |
14f9c5c9 | 4457 | { |
529cad9c PH |
4458 | /* Do not try to complete stub types, as the debugger is probably |
4459 | already scanning all symbols matching a certain name at the | |
4460 | time when this function is called. Trying to replace the stub | |
4461 | type by its associated full type will cause us to restart a scan | |
4462 | which may lead to an infinite recursion. Instead, the client | |
4463 | collecting the matching symbols will end up collecting several | |
4464 | matches, with at least one of them complete. It can then filter | |
4465 | out the stub ones if needed. */ | |
4466 | ||
d1183b06 | 4467 | for (int i = result.size () - 1; i >= 0; i -= 1) |
4c4b4cd2 | 4468 | { |
d1183b06 | 4469 | if (lesseq_defined_than (sym, result[i].symbol)) |
dda83cd7 | 4470 | return; |
d1183b06 | 4471 | else if (lesseq_defined_than (result[i].symbol, sym)) |
dda83cd7 | 4472 | { |
d1183b06 TT |
4473 | result[i].symbol = sym; |
4474 | result[i].block = block; | |
dda83cd7 SM |
4475 | return; |
4476 | } | |
4c4b4cd2 PH |
4477 | } |
4478 | ||
d1183b06 TT |
4479 | struct block_symbol info; |
4480 | info.symbol = sym; | |
4481 | info.block = block; | |
4482 | result.push_back (info); | |
4c4b4cd2 PH |
4483 | } |
4484 | ||
7c7b6655 TT |
4485 | /* Return a bound minimal symbol matching NAME according to Ada |
4486 | decoding rules. Returns an invalid symbol if there is no such | |
4487 | minimal symbol. Names prefixed with "standard__" are handled | |
4488 | specially: "standard__" is first stripped off, and only static and | |
4489 | global symbols are searched. */ | |
4c4b4cd2 | 4490 | |
7c7b6655 | 4491 | struct bound_minimal_symbol |
96d887e8 | 4492 | ada_lookup_simple_minsym (const char *name) |
4c4b4cd2 | 4493 | { |
7c7b6655 | 4494 | struct bound_minimal_symbol result; |
4c4b4cd2 | 4495 | |
7c7b6655 TT |
4496 | memset (&result, 0, sizeof (result)); |
4497 | ||
b5ec771e PA |
4498 | symbol_name_match_type match_type = name_match_type_from_name (name); |
4499 | lookup_name_info lookup_name (name, match_type); | |
4500 | ||
4501 | symbol_name_matcher_ftype *match_name | |
4502 | = ada_get_symbol_name_matcher (lookup_name); | |
4c4b4cd2 | 4503 | |
2030c079 | 4504 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4505 | { |
7932255d | 4506 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf | 4507 | { |
c9d95fa3 | 4508 | if (match_name (msymbol->linkage_name (), lookup_name, NULL) |
5325b9bf TT |
4509 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) |
4510 | { | |
4511 | result.minsym = msymbol; | |
4512 | result.objfile = objfile; | |
4513 | break; | |
4514 | } | |
4515 | } | |
4516 | } | |
4c4b4cd2 | 4517 | |
7c7b6655 | 4518 | return result; |
96d887e8 | 4519 | } |
4c4b4cd2 | 4520 | |
96d887e8 PH |
4521 | /* For all subprograms that statically enclose the subprogram of the |
4522 | selected frame, add symbols matching identifier NAME in DOMAIN | |
1bfa81ac | 4523 | and their blocks to the list of data in RESULT, as for |
48b78332 JB |
4524 | ada_add_block_symbols (q.v.). If WILD_MATCH_P, treat as NAME |
4525 | with a wildcard prefix. */ | |
4c4b4cd2 | 4526 | |
96d887e8 | 4527 | static void |
d1183b06 | 4528 | add_symbols_from_enclosing_procs (std::vector<struct block_symbol> &result, |
b5ec771e PA |
4529 | const lookup_name_info &lookup_name, |
4530 | domain_enum domain) | |
96d887e8 | 4531 | { |
96d887e8 | 4532 | } |
14f9c5c9 | 4533 | |
96d887e8 PH |
4534 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4535 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4536 | |
96d887e8 PH |
4537 | static int |
4538 | is_nondebugging_type (struct type *type) | |
4539 | { | |
0d5cff50 | 4540 | const char *name = ada_type_name (type); |
5b4ee69b | 4541 | |
96d887e8 PH |
4542 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); |
4543 | } | |
4c4b4cd2 | 4544 | |
8f17729f JB |
4545 | /* Return nonzero if TYPE1 and TYPE2 are two enumeration types |
4546 | that are deemed "identical" for practical purposes. | |
4547 | ||
4548 | This function assumes that TYPE1 and TYPE2 are both TYPE_CODE_ENUM | |
4549 | types and that their number of enumerals is identical (in other | |
1f704f76 | 4550 | words, type1->num_fields () == type2->num_fields ()). */ |
8f17729f JB |
4551 | |
4552 | static int | |
4553 | ada_identical_enum_types_p (struct type *type1, struct type *type2) | |
4554 | { | |
4555 | int i; | |
4556 | ||
4557 | /* The heuristic we use here is fairly conservative. We consider | |
4558 | that 2 enumerate types are identical if they have the same | |
4559 | number of enumerals and that all enumerals have the same | |
4560 | underlying value and name. */ | |
4561 | ||
4562 | /* All enums in the type should have an identical underlying value. */ | |
1f704f76 | 4563 | for (i = 0; i < type1->num_fields (); i++) |
14e75d8e | 4564 | if (TYPE_FIELD_ENUMVAL (type1, i) != TYPE_FIELD_ENUMVAL (type2, i)) |
8f17729f JB |
4565 | return 0; |
4566 | ||
4567 | /* All enumerals should also have the same name (modulo any numerical | |
4568 | suffix). */ | |
1f704f76 | 4569 | for (i = 0; i < type1->num_fields (); i++) |
8f17729f | 4570 | { |
0d5cff50 DE |
4571 | const char *name_1 = TYPE_FIELD_NAME (type1, i); |
4572 | const char *name_2 = TYPE_FIELD_NAME (type2, i); | |
8f17729f JB |
4573 | int len_1 = strlen (name_1); |
4574 | int len_2 = strlen (name_2); | |
4575 | ||
4576 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type1, i), &len_1); | |
4577 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type2, i), &len_2); | |
4578 | if (len_1 != len_2 | |
dda83cd7 | 4579 | || strncmp (TYPE_FIELD_NAME (type1, i), |
8f17729f JB |
4580 | TYPE_FIELD_NAME (type2, i), |
4581 | len_1) != 0) | |
4582 | return 0; | |
4583 | } | |
4584 | ||
4585 | return 1; | |
4586 | } | |
4587 | ||
4588 | /* Return nonzero if all the symbols in SYMS are all enumeral symbols | |
4589 | that are deemed "identical" for practical purposes. Sometimes, | |
4590 | enumerals are not strictly identical, but their types are so similar | |
4591 | that they can be considered identical. | |
4592 | ||
4593 | For instance, consider the following code: | |
4594 | ||
4595 | type Color is (Black, Red, Green, Blue, White); | |
4596 | type RGB_Color is new Color range Red .. Blue; | |
4597 | ||
4598 | Type RGB_Color is a subrange of an implicit type which is a copy | |
4599 | of type Color. If we call that implicit type RGB_ColorB ("B" is | |
4600 | for "Base Type"), then type RGB_ColorB is a copy of type Color. | |
4601 | As a result, when an expression references any of the enumeral | |
4602 | by name (Eg. "print green"), the expression is technically | |
4603 | ambiguous and the user should be asked to disambiguate. But | |
4604 | doing so would only hinder the user, since it wouldn't matter | |
4605 | what choice he makes, the outcome would always be the same. | |
4606 | So, for practical purposes, we consider them as the same. */ | |
4607 | ||
4608 | static int | |
54d343a2 | 4609 | symbols_are_identical_enums (const std::vector<struct block_symbol> &syms) |
8f17729f JB |
4610 | { |
4611 | int i; | |
4612 | ||
4613 | /* Before performing a thorough comparison check of each type, | |
4614 | we perform a series of inexpensive checks. We expect that these | |
4615 | checks will quickly fail in the vast majority of cases, and thus | |
4616 | help prevent the unnecessary use of a more expensive comparison. | |
4617 | Said comparison also expects us to make some of these checks | |
4618 | (see ada_identical_enum_types_p). */ | |
4619 | ||
4620 | /* Quick check: All symbols should have an enum type. */ | |
54d343a2 | 4621 | for (i = 0; i < syms.size (); i++) |
78134374 | 4622 | if (SYMBOL_TYPE (syms[i].symbol)->code () != TYPE_CODE_ENUM) |
8f17729f JB |
4623 | return 0; |
4624 | ||
4625 | /* Quick check: They should all have the same value. */ | |
54d343a2 | 4626 | for (i = 1; i < syms.size (); i++) |
d12307c1 | 4627 | if (SYMBOL_VALUE (syms[i].symbol) != SYMBOL_VALUE (syms[0].symbol)) |
8f17729f JB |
4628 | return 0; |
4629 | ||
4630 | /* Quick check: They should all have the same number of enumerals. */ | |
54d343a2 | 4631 | for (i = 1; i < syms.size (); i++) |
1f704f76 | 4632 | if (SYMBOL_TYPE (syms[i].symbol)->num_fields () |
dda83cd7 | 4633 | != SYMBOL_TYPE (syms[0].symbol)->num_fields ()) |
8f17729f JB |
4634 | return 0; |
4635 | ||
4636 | /* All the sanity checks passed, so we might have a set of | |
4637 | identical enumeration types. Perform a more complete | |
4638 | comparison of the type of each symbol. */ | |
54d343a2 | 4639 | for (i = 1; i < syms.size (); i++) |
d12307c1 | 4640 | if (!ada_identical_enum_types_p (SYMBOL_TYPE (syms[i].symbol), |
dda83cd7 | 4641 | SYMBOL_TYPE (syms[0].symbol))) |
8f17729f JB |
4642 | return 0; |
4643 | ||
4644 | return 1; | |
4645 | } | |
4646 | ||
54d343a2 | 4647 | /* Remove any non-debugging symbols in SYMS that definitely |
96d887e8 PH |
4648 | duplicate other symbols in the list (The only case I know of where |
4649 | this happens is when object files containing stabs-in-ecoff are | |
4650 | linked with files containing ordinary ecoff debugging symbols (or no | |
1bfa81ac | 4651 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. */ |
4c4b4cd2 | 4652 | |
d1183b06 | 4653 | static void |
54d343a2 | 4654 | remove_extra_symbols (std::vector<struct block_symbol> *syms) |
96d887e8 PH |
4655 | { |
4656 | int i, j; | |
4c4b4cd2 | 4657 | |
8f17729f JB |
4658 | /* We should never be called with less than 2 symbols, as there |
4659 | cannot be any extra symbol in that case. But it's easy to | |
4660 | handle, since we have nothing to do in that case. */ | |
54d343a2 | 4661 | if (syms->size () < 2) |
d1183b06 | 4662 | return; |
8f17729f | 4663 | |
96d887e8 | 4664 | i = 0; |
54d343a2 | 4665 | while (i < syms->size ()) |
96d887e8 | 4666 | { |
a35ddb44 | 4667 | int remove_p = 0; |
339c13b6 JB |
4668 | |
4669 | /* If two symbols have the same name and one of them is a stub type, | |
dda83cd7 | 4670 | the get rid of the stub. */ |
339c13b6 | 4671 | |
e46d3488 | 4672 | if (SYMBOL_TYPE ((*syms)[i].symbol)->is_stub () |
dda83cd7 SM |
4673 | && (*syms)[i].symbol->linkage_name () != NULL) |
4674 | { | |
4675 | for (j = 0; j < syms->size (); j++) | |
4676 | { | |
4677 | if (j != i | |
4678 | && !SYMBOL_TYPE ((*syms)[j].symbol)->is_stub () | |
4679 | && (*syms)[j].symbol->linkage_name () != NULL | |
4680 | && strcmp ((*syms)[i].symbol->linkage_name (), | |
4681 | (*syms)[j].symbol->linkage_name ()) == 0) | |
4682 | remove_p = 1; | |
4683 | } | |
4684 | } | |
339c13b6 JB |
4685 | |
4686 | /* Two symbols with the same name, same class and same address | |
dda83cd7 | 4687 | should be identical. */ |
339c13b6 | 4688 | |
987012b8 | 4689 | else if ((*syms)[i].symbol->linkage_name () != NULL |
dda83cd7 SM |
4690 | && SYMBOL_CLASS ((*syms)[i].symbol) == LOC_STATIC |
4691 | && is_nondebugging_type (SYMBOL_TYPE ((*syms)[i].symbol))) | |
4692 | { | |
4693 | for (j = 0; j < syms->size (); j += 1) | |
4694 | { | |
4695 | if (i != j | |
4696 | && (*syms)[j].symbol->linkage_name () != NULL | |
4697 | && strcmp ((*syms)[i].symbol->linkage_name (), | |
4698 | (*syms)[j].symbol->linkage_name ()) == 0 | |
4699 | && SYMBOL_CLASS ((*syms)[i].symbol) | |
54d343a2 | 4700 | == SYMBOL_CLASS ((*syms)[j].symbol) |
dda83cd7 SM |
4701 | && SYMBOL_VALUE_ADDRESS ((*syms)[i].symbol) |
4702 | == SYMBOL_VALUE_ADDRESS ((*syms)[j].symbol)) | |
4703 | remove_p = 1; | |
4704 | } | |
4705 | } | |
339c13b6 | 4706 | |
a35ddb44 | 4707 | if (remove_p) |
54d343a2 | 4708 | syms->erase (syms->begin () + i); |
1b788fb6 TT |
4709 | else |
4710 | i += 1; | |
14f9c5c9 | 4711 | } |
8f17729f JB |
4712 | |
4713 | /* If all the remaining symbols are identical enumerals, then | |
4714 | just keep the first one and discard the rest. | |
4715 | ||
4716 | Unlike what we did previously, we do not discard any entry | |
4717 | unless they are ALL identical. This is because the symbol | |
4718 | comparison is not a strict comparison, but rather a practical | |
4719 | comparison. If all symbols are considered identical, then | |
4720 | we can just go ahead and use the first one and discard the rest. | |
4721 | But if we cannot reduce the list to a single element, we have | |
4722 | to ask the user to disambiguate anyways. And if we have to | |
4723 | present a multiple-choice menu, it's less confusing if the list | |
4724 | isn't missing some choices that were identical and yet distinct. */ | |
54d343a2 TT |
4725 | if (symbols_are_identical_enums (*syms)) |
4726 | syms->resize (1); | |
14f9c5c9 AS |
4727 | } |
4728 | ||
96d887e8 PH |
4729 | /* Given a type that corresponds to a renaming entity, use the type name |
4730 | to extract the scope (package name or function name, fully qualified, | |
4731 | and following the GNAT encoding convention) where this renaming has been | |
49d83361 | 4732 | defined. */ |
4c4b4cd2 | 4733 | |
49d83361 | 4734 | static std::string |
96d887e8 | 4735 | xget_renaming_scope (struct type *renaming_type) |
14f9c5c9 | 4736 | { |
96d887e8 | 4737 | /* The renaming types adhere to the following convention: |
0963b4bd | 4738 | <scope>__<rename>___<XR extension>. |
96d887e8 PH |
4739 | So, to extract the scope, we search for the "___XR" extension, |
4740 | and then backtrack until we find the first "__". */ | |
76a01679 | 4741 | |
7d93a1e0 | 4742 | const char *name = renaming_type->name (); |
108d56a4 SM |
4743 | const char *suffix = strstr (name, "___XR"); |
4744 | const char *last; | |
14f9c5c9 | 4745 | |
96d887e8 PH |
4746 | /* Now, backtrack a bit until we find the first "__". Start looking |
4747 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4748 | |
96d887e8 PH |
4749 | for (last = suffix - 3; last > name; last--) |
4750 | if (last[0] == '_' && last[1] == '_') | |
4751 | break; | |
76a01679 | 4752 | |
96d887e8 | 4753 | /* Make a copy of scope and return it. */ |
49d83361 | 4754 | return std::string (name, last); |
4c4b4cd2 PH |
4755 | } |
4756 | ||
96d887e8 | 4757 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4758 | |
96d887e8 PH |
4759 | static int |
4760 | is_package_name (const char *name) | |
4c4b4cd2 | 4761 | { |
96d887e8 PH |
4762 | /* Here, We take advantage of the fact that no symbols are generated |
4763 | for packages, while symbols are generated for each function. | |
4764 | So the condition for NAME represent a package becomes equivalent | |
4765 | to NAME not existing in our list of symbols. There is only one | |
4766 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4767 | |
96d887e8 PH |
4768 | /* If it is a function that has not been defined at library level, |
4769 | then we should be able to look it up in the symbols. */ | |
4770 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4771 | return 0; | |
14f9c5c9 | 4772 | |
96d887e8 PH |
4773 | /* Library-level function names start with "_ada_". See if function |
4774 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4775 | |
96d887e8 | 4776 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4777 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4778 | if (strstr (name, "__") != NULL) |
4779 | return 0; | |
4c4b4cd2 | 4780 | |
528e1572 | 4781 | std::string fun_name = string_printf ("_ada_%s", name); |
14f9c5c9 | 4782 | |
528e1572 | 4783 | return (standard_lookup (fun_name.c_str (), NULL, VAR_DOMAIN) == NULL); |
96d887e8 | 4784 | } |
14f9c5c9 | 4785 | |
96d887e8 | 4786 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4787 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4788 | |
96d887e8 | 4789 | static int |
0d5cff50 | 4790 | old_renaming_is_invisible (const struct symbol *sym, const char *function_name) |
96d887e8 | 4791 | { |
aeb5907d JB |
4792 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
4793 | return 0; | |
4794 | ||
49d83361 | 4795 | std::string scope = xget_renaming_scope (SYMBOL_TYPE (sym)); |
14f9c5c9 | 4796 | |
96d887e8 | 4797 | /* If the rename has been defined in a package, then it is visible. */ |
49d83361 TT |
4798 | if (is_package_name (scope.c_str ())) |
4799 | return 0; | |
14f9c5c9 | 4800 | |
96d887e8 PH |
4801 | /* Check that the rename is in the current function scope by checking |
4802 | that its name starts with SCOPE. */ | |
76a01679 | 4803 | |
96d887e8 PH |
4804 | /* If the function name starts with "_ada_", it means that it is |
4805 | a library-level function. Strip this prefix before doing the | |
4806 | comparison, as the encoding for the renaming does not contain | |
4807 | this prefix. */ | |
61012eef | 4808 | if (startswith (function_name, "_ada_")) |
96d887e8 | 4809 | function_name += 5; |
f26caa11 | 4810 | |
49d83361 | 4811 | return !startswith (function_name, scope.c_str ()); |
f26caa11 PH |
4812 | } |
4813 | ||
aeb5907d JB |
4814 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4815 | is not visible from the function associated with CURRENT_BLOCK or | |
4816 | that is superfluous due to the presence of more specific renaming | |
4817 | information. Places surviving symbols in the initial entries of | |
d1183b06 TT |
4818 | SYMS. |
4819 | ||
96d887e8 | 4820 | Rationale: |
aeb5907d JB |
4821 | First, in cases where an object renaming is implemented as a |
4822 | reference variable, GNAT may produce both the actual reference | |
4823 | variable and the renaming encoding. In this case, we discard the | |
4824 | latter. | |
4825 | ||
4826 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4827 | entity. Unfortunately, STABS currently does not support the definition |
4828 | of types that are local to a given lexical block, so all renamings types | |
4829 | are emitted at library level. As a consequence, if an application | |
4830 | contains two renaming entities using the same name, and a user tries to | |
4831 | print the value of one of these entities, the result of the ada symbol | |
4832 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4833 | |
96d887e8 PH |
4834 | This function partially covers for this limitation by attempting to |
4835 | remove from the SYMS list renaming symbols that should be visible | |
4836 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4837 | method with the current information available. The implementation | |
4838 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4839 | ||
4840 | - When the user tries to print a rename in a function while there | |
dda83cd7 SM |
4841 | is another rename entity defined in a package: Normally, the |
4842 | rename in the function has precedence over the rename in the | |
4843 | package, so the latter should be removed from the list. This is | |
4844 | currently not the case. | |
4845 | ||
96d887e8 | 4846 | - This function will incorrectly remove valid renames if |
dda83cd7 SM |
4847 | the CURRENT_BLOCK corresponds to a function which symbol name |
4848 | has been changed by an "Export" pragma. As a consequence, | |
4849 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4850 | |
d1183b06 | 4851 | static void |
54d343a2 TT |
4852 | remove_irrelevant_renamings (std::vector<struct block_symbol> *syms, |
4853 | const struct block *current_block) | |
4c4b4cd2 PH |
4854 | { |
4855 | struct symbol *current_function; | |
0d5cff50 | 4856 | const char *current_function_name; |
4c4b4cd2 | 4857 | int i; |
aeb5907d JB |
4858 | int is_new_style_renaming; |
4859 | ||
4860 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4861 | a simple variable foo in the same block, discard the latter. | |
0963b4bd | 4862 | First, zero out such symbols, then compress. */ |
aeb5907d | 4863 | is_new_style_renaming = 0; |
54d343a2 | 4864 | for (i = 0; i < syms->size (); i += 1) |
aeb5907d | 4865 | { |
54d343a2 TT |
4866 | struct symbol *sym = (*syms)[i].symbol; |
4867 | const struct block *block = (*syms)[i].block; | |
aeb5907d JB |
4868 | const char *name; |
4869 | const char *suffix; | |
4870 | ||
4871 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4872 | continue; | |
987012b8 | 4873 | name = sym->linkage_name (); |
aeb5907d JB |
4874 | suffix = strstr (name, "___XR"); |
4875 | ||
4876 | if (suffix != NULL) | |
4877 | { | |
4878 | int name_len = suffix - name; | |
4879 | int j; | |
5b4ee69b | 4880 | |
aeb5907d | 4881 | is_new_style_renaming = 1; |
54d343a2 TT |
4882 | for (j = 0; j < syms->size (); j += 1) |
4883 | if (i != j && (*syms)[j].symbol != NULL | |
987012b8 | 4884 | && strncmp (name, (*syms)[j].symbol->linkage_name (), |
aeb5907d | 4885 | name_len) == 0 |
54d343a2 TT |
4886 | && block == (*syms)[j].block) |
4887 | (*syms)[j].symbol = NULL; | |
aeb5907d JB |
4888 | } |
4889 | } | |
4890 | if (is_new_style_renaming) | |
4891 | { | |
4892 | int j, k; | |
4893 | ||
54d343a2 TT |
4894 | for (j = k = 0; j < syms->size (); j += 1) |
4895 | if ((*syms)[j].symbol != NULL) | |
aeb5907d | 4896 | { |
54d343a2 | 4897 | (*syms)[k] = (*syms)[j]; |
aeb5907d JB |
4898 | k += 1; |
4899 | } | |
d1183b06 TT |
4900 | syms->resize (k); |
4901 | return; | |
aeb5907d | 4902 | } |
4c4b4cd2 PH |
4903 | |
4904 | /* Extract the function name associated to CURRENT_BLOCK. | |
4905 | Abort if unable to do so. */ | |
76a01679 | 4906 | |
4c4b4cd2 | 4907 | if (current_block == NULL) |
d1183b06 | 4908 | return; |
76a01679 | 4909 | |
7f0df278 | 4910 | current_function = block_linkage_function (current_block); |
4c4b4cd2 | 4911 | if (current_function == NULL) |
d1183b06 | 4912 | return; |
4c4b4cd2 | 4913 | |
987012b8 | 4914 | current_function_name = current_function->linkage_name (); |
4c4b4cd2 | 4915 | if (current_function_name == NULL) |
d1183b06 | 4916 | return; |
4c4b4cd2 PH |
4917 | |
4918 | /* Check each of the symbols, and remove it from the list if it is | |
4919 | a type corresponding to a renaming that is out of the scope of | |
4920 | the current block. */ | |
4921 | ||
4922 | i = 0; | |
54d343a2 | 4923 | while (i < syms->size ()) |
4c4b4cd2 | 4924 | { |
54d343a2 | 4925 | if (ada_parse_renaming ((*syms)[i].symbol, NULL, NULL, NULL) |
dda83cd7 SM |
4926 | == ADA_OBJECT_RENAMING |
4927 | && old_renaming_is_invisible ((*syms)[i].symbol, | |
54d343a2 TT |
4928 | current_function_name)) |
4929 | syms->erase (syms->begin () + i); | |
4c4b4cd2 | 4930 | else |
dda83cd7 | 4931 | i += 1; |
4c4b4cd2 | 4932 | } |
4c4b4cd2 PH |
4933 | } |
4934 | ||
d1183b06 | 4935 | /* Add to RESULT all symbols from BLOCK (and its super-blocks) |
339c13b6 JB |
4936 | whose name and domain match NAME and DOMAIN respectively. |
4937 | If no match was found, then extend the search to "enclosing" | |
4938 | routines (in other words, if we're inside a nested function, | |
4939 | search the symbols defined inside the enclosing functions). | |
d0a8ab18 JB |
4940 | If WILD_MATCH_P is nonzero, perform the naming matching in |
4941 | "wild" mode (see function "wild_match" for more info). | |
339c13b6 | 4942 | |
d1183b06 | 4943 | Note: This function assumes that RESULT has 0 (zero) element in it. */ |
339c13b6 JB |
4944 | |
4945 | static void | |
d1183b06 | 4946 | ada_add_local_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
4947 | const lookup_name_info &lookup_name, |
4948 | const struct block *block, domain_enum domain) | |
339c13b6 JB |
4949 | { |
4950 | int block_depth = 0; | |
4951 | ||
4952 | while (block != NULL) | |
4953 | { | |
4954 | block_depth += 1; | |
d1183b06 | 4955 | ada_add_block_symbols (result, block, lookup_name, domain, NULL); |
339c13b6 JB |
4956 | |
4957 | /* If we found a non-function match, assume that's the one. */ | |
d1183b06 | 4958 | if (is_nonfunction (result)) |
dda83cd7 | 4959 | return; |
339c13b6 JB |
4960 | |
4961 | block = BLOCK_SUPERBLOCK (block); | |
4962 | } | |
4963 | ||
4964 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
4965 | enclosing subprogram. */ | |
d1183b06 TT |
4966 | if (result.empty () && block_depth > 2) |
4967 | add_symbols_from_enclosing_procs (result, lookup_name, domain); | |
339c13b6 JB |
4968 | } |
4969 | ||
2315bb2d | 4970 | /* An object of this type is used as the callback argument when |
40658b94 | 4971 | calling the map_matching_symbols method. */ |
ccefe4c4 | 4972 | |
40658b94 | 4973 | struct match_data |
ccefe4c4 | 4974 | { |
1bfa81ac TT |
4975 | explicit match_data (std::vector<struct block_symbol> *rp) |
4976 | : resultp (rp) | |
4977 | { | |
4978 | } | |
4979 | DISABLE_COPY_AND_ASSIGN (match_data); | |
4980 | ||
2315bb2d TT |
4981 | bool operator() (struct block_symbol *bsym); |
4982 | ||
1bfa81ac | 4983 | struct objfile *objfile = nullptr; |
d1183b06 | 4984 | std::vector<struct block_symbol> *resultp; |
1bfa81ac | 4985 | struct symbol *arg_sym = nullptr; |
1178743e | 4986 | bool found_sym = false; |
ccefe4c4 TT |
4987 | }; |
4988 | ||
2315bb2d TT |
4989 | /* A callback for add_nonlocal_symbols that adds symbol, found in |
4990 | BSYM, to a list of symbols. */ | |
ccefe4c4 | 4991 | |
2315bb2d TT |
4992 | bool |
4993 | match_data::operator() (struct block_symbol *bsym) | |
ccefe4c4 | 4994 | { |
199b4314 TT |
4995 | const struct block *block = bsym->block; |
4996 | struct symbol *sym = bsym->symbol; | |
4997 | ||
40658b94 PH |
4998 | if (sym == NULL) |
4999 | { | |
2315bb2d TT |
5000 | if (!found_sym && arg_sym != NULL) |
5001 | add_defn_to_vec (*resultp, | |
5002 | fixup_symbol_section (arg_sym, objfile), | |
40658b94 | 5003 | block); |
2315bb2d TT |
5004 | found_sym = false; |
5005 | arg_sym = NULL; | |
40658b94 PH |
5006 | } |
5007 | else | |
5008 | { | |
5009 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) | |
199b4314 | 5010 | return true; |
40658b94 | 5011 | else if (SYMBOL_IS_ARGUMENT (sym)) |
2315bb2d | 5012 | arg_sym = sym; |
40658b94 PH |
5013 | else |
5014 | { | |
2315bb2d TT |
5015 | found_sym = true; |
5016 | add_defn_to_vec (*resultp, | |
5017 | fixup_symbol_section (sym, objfile), | |
40658b94 PH |
5018 | block); |
5019 | } | |
5020 | } | |
199b4314 | 5021 | return true; |
40658b94 PH |
5022 | } |
5023 | ||
b5ec771e PA |
5024 | /* Helper for add_nonlocal_symbols. Find symbols in DOMAIN which are |
5025 | targeted by renamings matching LOOKUP_NAME in BLOCK. Add these | |
1bfa81ac | 5026 | symbols to RESULT. Return whether we found such symbols. */ |
22cee43f PMR |
5027 | |
5028 | static int | |
d1183b06 | 5029 | ada_add_block_renamings (std::vector<struct block_symbol> &result, |
22cee43f | 5030 | const struct block *block, |
b5ec771e PA |
5031 | const lookup_name_info &lookup_name, |
5032 | domain_enum domain) | |
22cee43f PMR |
5033 | { |
5034 | struct using_direct *renaming; | |
d1183b06 | 5035 | int defns_mark = result.size (); |
22cee43f | 5036 | |
b5ec771e PA |
5037 | symbol_name_matcher_ftype *name_match |
5038 | = ada_get_symbol_name_matcher (lookup_name); | |
5039 | ||
22cee43f PMR |
5040 | for (renaming = block_using (block); |
5041 | renaming != NULL; | |
5042 | renaming = renaming->next) | |
5043 | { | |
5044 | const char *r_name; | |
22cee43f PMR |
5045 | |
5046 | /* Avoid infinite recursions: skip this renaming if we are actually | |
5047 | already traversing it. | |
5048 | ||
5049 | Currently, symbol lookup in Ada don't use the namespace machinery from | |
5050 | C++/Fortran support: skip namespace imports that use them. */ | |
5051 | if (renaming->searched | |
5052 | || (renaming->import_src != NULL | |
5053 | && renaming->import_src[0] != '\0') | |
5054 | || (renaming->import_dest != NULL | |
5055 | && renaming->import_dest[0] != '\0')) | |
5056 | continue; | |
5057 | renaming->searched = 1; | |
5058 | ||
5059 | /* TODO: here, we perform another name-based symbol lookup, which can | |
5060 | pull its own multiple overloads. In theory, we should be able to do | |
5061 | better in this case since, in DWARF, DW_AT_import is a DIE reference, | |
5062 | not a simple name. But in order to do this, we would need to enhance | |
5063 | the DWARF reader to associate a symbol to this renaming, instead of a | |
5064 | name. So, for now, we do something simpler: re-use the C++/Fortran | |
5065 | namespace machinery. */ | |
5066 | r_name = (renaming->alias != NULL | |
5067 | ? renaming->alias | |
5068 | : renaming->declaration); | |
b5ec771e PA |
5069 | if (name_match (r_name, lookup_name, NULL)) |
5070 | { | |
5071 | lookup_name_info decl_lookup_name (renaming->declaration, | |
5072 | lookup_name.match_type ()); | |
d1183b06 | 5073 | ada_add_all_symbols (result, block, decl_lookup_name, domain, |
b5ec771e PA |
5074 | 1, NULL); |
5075 | } | |
22cee43f PMR |
5076 | renaming->searched = 0; |
5077 | } | |
d1183b06 | 5078 | return result.size () != defns_mark; |
22cee43f PMR |
5079 | } |
5080 | ||
db230ce3 JB |
5081 | /* Implements compare_names, but only applying the comparision using |
5082 | the given CASING. */ | |
5b4ee69b | 5083 | |
40658b94 | 5084 | static int |
db230ce3 JB |
5085 | compare_names_with_case (const char *string1, const char *string2, |
5086 | enum case_sensitivity casing) | |
40658b94 PH |
5087 | { |
5088 | while (*string1 != '\0' && *string2 != '\0') | |
5089 | { | |
db230ce3 JB |
5090 | char c1, c2; |
5091 | ||
40658b94 PH |
5092 | if (isspace (*string1) || isspace (*string2)) |
5093 | return strcmp_iw_ordered (string1, string2); | |
db230ce3 JB |
5094 | |
5095 | if (casing == case_sensitive_off) | |
5096 | { | |
5097 | c1 = tolower (*string1); | |
5098 | c2 = tolower (*string2); | |
5099 | } | |
5100 | else | |
5101 | { | |
5102 | c1 = *string1; | |
5103 | c2 = *string2; | |
5104 | } | |
5105 | if (c1 != c2) | |
40658b94 | 5106 | break; |
db230ce3 | 5107 | |
40658b94 PH |
5108 | string1 += 1; |
5109 | string2 += 1; | |
5110 | } | |
db230ce3 | 5111 | |
40658b94 PH |
5112 | switch (*string1) |
5113 | { | |
5114 | case '(': | |
5115 | return strcmp_iw_ordered (string1, string2); | |
5116 | case '_': | |
5117 | if (*string2 == '\0') | |
5118 | { | |
052874e8 | 5119 | if (is_name_suffix (string1)) |
40658b94 PH |
5120 | return 0; |
5121 | else | |
1a1d5513 | 5122 | return 1; |
40658b94 | 5123 | } |
dbb8534f | 5124 | /* FALLTHROUGH */ |
40658b94 PH |
5125 | default: |
5126 | if (*string2 == '(') | |
5127 | return strcmp_iw_ordered (string1, string2); | |
5128 | else | |
db230ce3 JB |
5129 | { |
5130 | if (casing == case_sensitive_off) | |
5131 | return tolower (*string1) - tolower (*string2); | |
5132 | else | |
5133 | return *string1 - *string2; | |
5134 | } | |
40658b94 | 5135 | } |
ccefe4c4 TT |
5136 | } |
5137 | ||
db230ce3 JB |
5138 | /* Compare STRING1 to STRING2, with results as for strcmp. |
5139 | Compatible with strcmp_iw_ordered in that... | |
5140 | ||
5141 | strcmp_iw_ordered (STRING1, STRING2) <= 0 | |
5142 | ||
5143 | ... implies... | |
5144 | ||
5145 | compare_names (STRING1, STRING2) <= 0 | |
5146 | ||
5147 | (they may differ as to what symbols compare equal). */ | |
5148 | ||
5149 | static int | |
5150 | compare_names (const char *string1, const char *string2) | |
5151 | { | |
5152 | int result; | |
5153 | ||
5154 | /* Similar to what strcmp_iw_ordered does, we need to perform | |
5155 | a case-insensitive comparison first, and only resort to | |
5156 | a second, case-sensitive, comparison if the first one was | |
5157 | not sufficient to differentiate the two strings. */ | |
5158 | ||
5159 | result = compare_names_with_case (string1, string2, case_sensitive_off); | |
5160 | if (result == 0) | |
5161 | result = compare_names_with_case (string1, string2, case_sensitive_on); | |
5162 | ||
5163 | return result; | |
5164 | } | |
5165 | ||
b5ec771e PA |
5166 | /* Convenience function to get at the Ada encoded lookup name for |
5167 | LOOKUP_NAME, as a C string. */ | |
5168 | ||
5169 | static const char * | |
5170 | ada_lookup_name (const lookup_name_info &lookup_name) | |
5171 | { | |
5172 | return lookup_name.ada ().lookup_name ().c_str (); | |
5173 | } | |
5174 | ||
0b7b2c2a TT |
5175 | /* A helper for add_nonlocal_symbols. Call expand_matching_symbols |
5176 | for OBJFILE, then walk the objfile's symtabs and update the | |
5177 | results. */ | |
5178 | ||
5179 | static void | |
5180 | map_matching_symbols (struct objfile *objfile, | |
5181 | const lookup_name_info &lookup_name, | |
5182 | bool is_wild_match, | |
5183 | domain_enum domain, | |
5184 | int global, | |
5185 | match_data &data) | |
5186 | { | |
5187 | data.objfile = objfile; | |
5188 | objfile->expand_matching_symbols (lookup_name, domain, global, | |
5189 | is_wild_match ? nullptr : compare_names); | |
5190 | ||
5191 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5192 | for (compunit_symtab *symtab : objfile->compunits ()) | |
5193 | { | |
5194 | const struct block *block | |
5195 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); | |
5196 | if (!iterate_over_symbols_terminated (block, lookup_name, | |
5197 | domain, data)) | |
5198 | break; | |
5199 | } | |
5200 | } | |
5201 | ||
1bfa81ac | 5202 | /* Add to RESULT all non-local symbols whose name and domain match |
b5ec771e PA |
5203 | LOOKUP_NAME and DOMAIN respectively. The search is performed on |
5204 | GLOBAL_BLOCK symbols if GLOBAL is non-zero, or on STATIC_BLOCK | |
5205 | symbols otherwise. */ | |
339c13b6 JB |
5206 | |
5207 | static void | |
d1183b06 | 5208 | add_nonlocal_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
5209 | const lookup_name_info &lookup_name, |
5210 | domain_enum domain, int global) | |
339c13b6 | 5211 | { |
1bfa81ac | 5212 | struct match_data data (&result); |
339c13b6 | 5213 | |
b5ec771e PA |
5214 | bool is_wild_match = lookup_name.ada ().wild_match_p (); |
5215 | ||
2030c079 | 5216 | for (objfile *objfile : current_program_space->objfiles ()) |
40658b94 | 5217 | { |
0b7b2c2a TT |
5218 | map_matching_symbols (objfile, lookup_name, is_wild_match, domain, |
5219 | global, data); | |
22cee43f | 5220 | |
b669c953 | 5221 | for (compunit_symtab *cu : objfile->compunits ()) |
22cee43f PMR |
5222 | { |
5223 | const struct block *global_block | |
5224 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cu), GLOBAL_BLOCK); | |
5225 | ||
d1183b06 | 5226 | if (ada_add_block_renamings (result, global_block, lookup_name, |
b5ec771e | 5227 | domain)) |
1178743e | 5228 | data.found_sym = true; |
22cee43f | 5229 | } |
40658b94 PH |
5230 | } |
5231 | ||
d1183b06 | 5232 | if (result.empty () && global && !is_wild_match) |
40658b94 | 5233 | { |
b5ec771e | 5234 | const char *name = ada_lookup_name (lookup_name); |
e0802d59 TT |
5235 | std::string bracket_name = std::string ("<_ada_") + name + '>'; |
5236 | lookup_name_info name1 (bracket_name, symbol_name_match_type::FULL); | |
b5ec771e | 5237 | |
2030c079 | 5238 | for (objfile *objfile : current_program_space->objfiles ()) |
0b7b2c2a TT |
5239 | map_matching_symbols (objfile, name1, false, domain, global, data); |
5240 | } | |
339c13b6 JB |
5241 | } |
5242 | ||
b5ec771e PA |
5243 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if |
5244 | FULL_SEARCH is non-zero, enclosing scope and in global scopes, | |
1bfa81ac | 5245 | returning the number of matches. Add these to RESULT. |
4eeaa230 | 5246 | |
22cee43f PMR |
5247 | When FULL_SEARCH is non-zero, any non-function/non-enumeral |
5248 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
4c4b4cd2 | 5249 | is the one match returned (no other matches in that or |
d9680e73 | 5250 | enclosing blocks is returned). If there are any matches in or |
22cee43f | 5251 | surrounding BLOCK, then these alone are returned. |
4eeaa230 | 5252 | |
b5ec771e PA |
5253 | Names prefixed with "standard__" are handled specially: |
5254 | "standard__" is first stripped off (by the lookup_name | |
5255 | constructor), and only static and global symbols are searched. | |
14f9c5c9 | 5256 | |
22cee43f PMR |
5257 | If MADE_GLOBAL_LOOKUP_P is non-null, set it before return to whether we had |
5258 | to lookup global symbols. */ | |
5259 | ||
5260 | static void | |
d1183b06 | 5261 | ada_add_all_symbols (std::vector<struct block_symbol> &result, |
22cee43f | 5262 | const struct block *block, |
b5ec771e | 5263 | const lookup_name_info &lookup_name, |
22cee43f PMR |
5264 | domain_enum domain, |
5265 | int full_search, | |
5266 | int *made_global_lookup_p) | |
14f9c5c9 AS |
5267 | { |
5268 | struct symbol *sym; | |
14f9c5c9 | 5269 | |
22cee43f PMR |
5270 | if (made_global_lookup_p) |
5271 | *made_global_lookup_p = 0; | |
339c13b6 JB |
5272 | |
5273 | /* Special case: If the user specifies a symbol name inside package | |
5274 | Standard, do a non-wild matching of the symbol name without | |
5275 | the "standard__" prefix. This was primarily introduced in order | |
5276 | to allow the user to specifically access the standard exceptions | |
5277 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
5278 | is ambiguous (due to the user defining its own Constraint_Error | |
5279 | entity inside its program). */ | |
b5ec771e PA |
5280 | if (lookup_name.ada ().standard_p ()) |
5281 | block = NULL; | |
4c4b4cd2 | 5282 | |
339c13b6 | 5283 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 5284 | |
4eeaa230 DE |
5285 | if (block != NULL) |
5286 | { | |
5287 | if (full_search) | |
d1183b06 | 5288 | ada_add_local_symbols (result, lookup_name, block, domain); |
4eeaa230 DE |
5289 | else |
5290 | { | |
5291 | /* In the !full_search case we're are being called by | |
4009ee92 | 5292 | iterate_over_symbols, and we don't want to search |
4eeaa230 | 5293 | superblocks. */ |
d1183b06 | 5294 | ada_add_block_symbols (result, block, lookup_name, domain, NULL); |
4eeaa230 | 5295 | } |
d1183b06 | 5296 | if (!result.empty () || !full_search) |
22cee43f | 5297 | return; |
4eeaa230 | 5298 | } |
d2e4a39e | 5299 | |
339c13b6 JB |
5300 | /* No non-global symbols found. Check our cache to see if we have |
5301 | already performed this search before. If we have, then return | |
5302 | the same result. */ | |
5303 | ||
b5ec771e PA |
5304 | if (lookup_cached_symbol (ada_lookup_name (lookup_name), |
5305 | domain, &sym, &block)) | |
4c4b4cd2 PH |
5306 | { |
5307 | if (sym != NULL) | |
d1183b06 | 5308 | add_defn_to_vec (result, sym, block); |
22cee43f | 5309 | return; |
4c4b4cd2 | 5310 | } |
14f9c5c9 | 5311 | |
22cee43f PMR |
5312 | if (made_global_lookup_p) |
5313 | *made_global_lookup_p = 1; | |
b1eedac9 | 5314 | |
339c13b6 JB |
5315 | /* Search symbols from all global blocks. */ |
5316 | ||
d1183b06 | 5317 | add_nonlocal_symbols (result, lookup_name, domain, 1); |
d2e4a39e | 5318 | |
4c4b4cd2 | 5319 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 5320 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 5321 | |
d1183b06 TT |
5322 | if (result.empty ()) |
5323 | add_nonlocal_symbols (result, lookup_name, domain, 0); | |
22cee43f PMR |
5324 | } |
5325 | ||
b5ec771e | 5326 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if FULL_SEARCH |
d1183b06 TT |
5327 | is non-zero, enclosing scope and in global scopes. |
5328 | ||
5329 | Returns (SYM,BLOCK) tuples, indicating the symbols found and the | |
5330 | blocks and symbol tables (if any) in which they were found. | |
22cee43f PMR |
5331 | |
5332 | When full_search is non-zero, any non-function/non-enumeral | |
5333 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
5334 | is the one match returned (no other matches in that or | |
5335 | enclosing blocks is returned). If there are any matches in or | |
5336 | surrounding BLOCK, then these alone are returned. | |
5337 | ||
5338 | Names prefixed with "standard__" are handled specially: "standard__" | |
5339 | is first stripped off, and only static and global symbols are searched. */ | |
5340 | ||
d1183b06 | 5341 | static std::vector<struct block_symbol> |
b5ec771e PA |
5342 | ada_lookup_symbol_list_worker (const lookup_name_info &lookup_name, |
5343 | const struct block *block, | |
22cee43f | 5344 | domain_enum domain, |
22cee43f PMR |
5345 | int full_search) |
5346 | { | |
22cee43f | 5347 | int syms_from_global_search; |
d1183b06 | 5348 | std::vector<struct block_symbol> results; |
22cee43f | 5349 | |
d1183b06 | 5350 | ada_add_all_symbols (results, block, lookup_name, |
b5ec771e | 5351 | domain, full_search, &syms_from_global_search); |
14f9c5c9 | 5352 | |
d1183b06 | 5353 | remove_extra_symbols (&results); |
4c4b4cd2 | 5354 | |
d1183b06 | 5355 | if (results.empty () && full_search && syms_from_global_search) |
b5ec771e | 5356 | cache_symbol (ada_lookup_name (lookup_name), domain, NULL, NULL); |
14f9c5c9 | 5357 | |
d1183b06 | 5358 | if (results.size () == 1 && full_search && syms_from_global_search) |
b5ec771e | 5359 | cache_symbol (ada_lookup_name (lookup_name), domain, |
d1183b06 | 5360 | results[0].symbol, results[0].block); |
ec6a20c2 | 5361 | |
d1183b06 TT |
5362 | remove_irrelevant_renamings (&results, block); |
5363 | return results; | |
14f9c5c9 AS |
5364 | } |
5365 | ||
b5ec771e | 5366 | /* Find symbols in DOMAIN matching NAME, in BLOCK and enclosing scope and |
d1183b06 | 5367 | in global scopes, returning (SYM,BLOCK) tuples. |
ec6a20c2 | 5368 | |
4eeaa230 DE |
5369 | See ada_lookup_symbol_list_worker for further details. */ |
5370 | ||
d1183b06 | 5371 | std::vector<struct block_symbol> |
b5ec771e | 5372 | ada_lookup_symbol_list (const char *name, const struct block *block, |
d1183b06 | 5373 | domain_enum domain) |
4eeaa230 | 5374 | { |
b5ec771e PA |
5375 | symbol_name_match_type name_match_type = name_match_type_from_name (name); |
5376 | lookup_name_info lookup_name (name, name_match_type); | |
5377 | ||
d1183b06 | 5378 | return ada_lookup_symbol_list_worker (lookup_name, block, domain, 1); |
4eeaa230 DE |
5379 | } |
5380 | ||
4e5c77fe JB |
5381 | /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set |
5382 | to 1, but choosing the first symbol found if there are multiple | |
5383 | choices. | |
5384 | ||
5e2336be JB |
5385 | The result is stored in *INFO, which must be non-NULL. |
5386 | If no match is found, INFO->SYM is set to NULL. */ | |
4e5c77fe JB |
5387 | |
5388 | void | |
5389 | ada_lookup_encoded_symbol (const char *name, const struct block *block, | |
fe978cb0 | 5390 | domain_enum domain, |
d12307c1 | 5391 | struct block_symbol *info) |
14f9c5c9 | 5392 | { |
b5ec771e PA |
5393 | /* Since we already have an encoded name, wrap it in '<>' to force a |
5394 | verbatim match. Otherwise, if the name happens to not look like | |
5395 | an encoded name (because it doesn't include a "__"), | |
5396 | ada_lookup_name_info would re-encode/fold it again, and that | |
5397 | would e.g., incorrectly lowercase object renaming names like | |
5398 | "R28b" -> "r28b". */ | |
12932e2c | 5399 | std::string verbatim = add_angle_brackets (name); |
b5ec771e | 5400 | |
5e2336be | 5401 | gdb_assert (info != NULL); |
65392b3e | 5402 | *info = ada_lookup_symbol (verbatim.c_str (), block, domain); |
4e5c77fe | 5403 | } |
aeb5907d JB |
5404 | |
5405 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
5406 | scope and in global scopes, or NULL if none. NAME is folded and | |
5407 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
65392b3e | 5408 | choosing the first symbol if there are multiple choices. */ |
4e5c77fe | 5409 | |
d12307c1 | 5410 | struct block_symbol |
aeb5907d | 5411 | ada_lookup_symbol (const char *name, const struct block *block0, |
dda83cd7 | 5412 | domain_enum domain) |
aeb5907d | 5413 | { |
d1183b06 TT |
5414 | std::vector<struct block_symbol> candidates |
5415 | = ada_lookup_symbol_list (name, block0, domain); | |
f98fc17b | 5416 | |
d1183b06 | 5417 | if (candidates.empty ()) |
54d343a2 | 5418 | return {}; |
f98fc17b PA |
5419 | |
5420 | block_symbol info = candidates[0]; | |
5421 | info.symbol = fixup_symbol_section (info.symbol, NULL); | |
d12307c1 | 5422 | return info; |
4c4b4cd2 | 5423 | } |
14f9c5c9 | 5424 | |
14f9c5c9 | 5425 | |
4c4b4cd2 PH |
5426 | /* True iff STR is a possible encoded suffix of a normal Ada name |
5427 | that is to be ignored for matching purposes. Suffixes of parallel | |
5428 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 5429 | are given by any of the regular expressions: |
4c4b4cd2 | 5430 | |
babe1480 JB |
5431 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
5432 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
9ac7f98e | 5433 | TKB [subprogram suffix for task bodies] |
babe1480 | 5434 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 5435 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
5436 | |
5437 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
5438 | match is performed. This sequence is used to differentiate homonyms, | |
5439 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 5440 | |
14f9c5c9 | 5441 | static int |
d2e4a39e | 5442 | is_name_suffix (const char *str) |
14f9c5c9 AS |
5443 | { |
5444 | int k; | |
4c4b4cd2 PH |
5445 | const char *matching; |
5446 | const int len = strlen (str); | |
5447 | ||
babe1480 JB |
5448 | /* Skip optional leading __[0-9]+. */ |
5449 | ||
4c4b4cd2 PH |
5450 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
5451 | { | |
babe1480 JB |
5452 | str += 3; |
5453 | while (isdigit (str[0])) | |
dda83cd7 | 5454 | str += 1; |
4c4b4cd2 | 5455 | } |
babe1480 JB |
5456 | |
5457 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 5458 | |
babe1480 | 5459 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 5460 | { |
babe1480 | 5461 | matching = str + 1; |
4c4b4cd2 | 5462 | while (isdigit (matching[0])) |
dda83cd7 | 5463 | matching += 1; |
4c4b4cd2 | 5464 | if (matching[0] == '\0') |
dda83cd7 | 5465 | return 1; |
4c4b4cd2 PH |
5466 | } |
5467 | ||
5468 | /* ___[0-9]+ */ | |
babe1480 | 5469 | |
4c4b4cd2 PH |
5470 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
5471 | { | |
5472 | matching = str + 3; | |
5473 | while (isdigit (matching[0])) | |
dda83cd7 | 5474 | matching += 1; |
4c4b4cd2 | 5475 | if (matching[0] == '\0') |
dda83cd7 | 5476 | return 1; |
4c4b4cd2 PH |
5477 | } |
5478 | ||
9ac7f98e JB |
5479 | /* "TKB" suffixes are used for subprograms implementing task bodies. */ |
5480 | ||
5481 | if (strcmp (str, "TKB") == 0) | |
5482 | return 1; | |
5483 | ||
529cad9c PH |
5484 | #if 0 |
5485 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
0963b4bd MS |
5486 | with a N at the end. Unfortunately, the compiler uses the same |
5487 | convention for other internal types it creates. So treating | |
529cad9c | 5488 | all entity names that end with an "N" as a name suffix causes |
0963b4bd MS |
5489 | some regressions. For instance, consider the case of an enumerated |
5490 | type. To support the 'Image attribute, it creates an array whose | |
529cad9c PH |
5491 | name ends with N. |
5492 | Having a single character like this as a suffix carrying some | |
0963b4bd | 5493 | information is a bit risky. Perhaps we should change the encoding |
529cad9c PH |
5494 | to be something like "_N" instead. In the meantime, do not do |
5495 | the following check. */ | |
5496 | /* Protected Object Subprograms */ | |
5497 | if (len == 1 && str [0] == 'N') | |
5498 | return 1; | |
5499 | #endif | |
5500 | ||
5501 | /* _E[0-9]+[bs]$ */ | |
5502 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
5503 | { | |
5504 | matching = str + 3; | |
5505 | while (isdigit (matching[0])) | |
dda83cd7 | 5506 | matching += 1; |
529cad9c | 5507 | if ((matching[0] == 'b' || matching[0] == 's') |
dda83cd7 SM |
5508 | && matching [1] == '\0') |
5509 | return 1; | |
529cad9c PH |
5510 | } |
5511 | ||
4c4b4cd2 PH |
5512 | /* ??? We should not modify STR directly, as we are doing below. This |
5513 | is fine in this case, but may become problematic later if we find | |
5514 | that this alternative did not work, and want to try matching | |
5515 | another one from the begining of STR. Since we modified it, we | |
5516 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
5517 | if (str[0] == 'X') |
5518 | { | |
5519 | str += 1; | |
d2e4a39e | 5520 | while (str[0] != '_' && str[0] != '\0') |
dda83cd7 SM |
5521 | { |
5522 | if (str[0] != 'n' && str[0] != 'b') | |
5523 | return 0; | |
5524 | str += 1; | |
5525 | } | |
14f9c5c9 | 5526 | } |
babe1480 | 5527 | |
14f9c5c9 AS |
5528 | if (str[0] == '\000') |
5529 | return 1; | |
babe1480 | 5530 | |
d2e4a39e | 5531 | if (str[0] == '_') |
14f9c5c9 AS |
5532 | { |
5533 | if (str[1] != '_' || str[2] == '\000') | |
dda83cd7 | 5534 | return 0; |
d2e4a39e | 5535 | if (str[2] == '_') |
dda83cd7 SM |
5536 | { |
5537 | if (strcmp (str + 3, "JM") == 0) | |
5538 | return 1; | |
5539 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
5540 | the LJM suffix in favor of the JM one. But we will | |
5541 | still accept LJM as a valid suffix for a reasonable | |
5542 | amount of time, just to allow ourselves to debug programs | |
5543 | compiled using an older version of GNAT. */ | |
5544 | if (strcmp (str + 3, "LJM") == 0) | |
5545 | return 1; | |
5546 | if (str[3] != 'X') | |
5547 | return 0; | |
5548 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' | |
5549 | || str[4] == 'U' || str[4] == 'P') | |
5550 | return 1; | |
5551 | if (str[4] == 'R' && str[5] != 'T') | |
5552 | return 1; | |
5553 | return 0; | |
5554 | } | |
4c4b4cd2 | 5555 | if (!isdigit (str[2])) |
dda83cd7 | 5556 | return 0; |
4c4b4cd2 | 5557 | for (k = 3; str[k] != '\0'; k += 1) |
dda83cd7 SM |
5558 | if (!isdigit (str[k]) && str[k] != '_') |
5559 | return 0; | |
14f9c5c9 AS |
5560 | return 1; |
5561 | } | |
4c4b4cd2 | 5562 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 5563 | { |
4c4b4cd2 | 5564 | for (k = 2; str[k] != '\0'; k += 1) |
dda83cd7 SM |
5565 | if (!isdigit (str[k]) && str[k] != '_') |
5566 | return 0; | |
14f9c5c9 AS |
5567 | return 1; |
5568 | } | |
5569 | return 0; | |
5570 | } | |
d2e4a39e | 5571 | |
aeb5907d JB |
5572 | /* Return non-zero if the string starting at NAME and ending before |
5573 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5574 | |
5575 | static int | |
5576 | is_valid_name_for_wild_match (const char *name0) | |
5577 | { | |
f945dedf | 5578 | std::string decoded_name = ada_decode (name0); |
529cad9c PH |
5579 | int i; |
5580 | ||
5823c3ef JB |
5581 | /* If the decoded name starts with an angle bracket, it means that |
5582 | NAME0 does not follow the GNAT encoding format. It should then | |
5583 | not be allowed as a possible wild match. */ | |
5584 | if (decoded_name[0] == '<') | |
5585 | return 0; | |
5586 | ||
529cad9c PH |
5587 | for (i=0; decoded_name[i] != '\0'; i++) |
5588 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5589 | return 0; | |
5590 | ||
5591 | return 1; | |
5592 | } | |
5593 | ||
59c8a30b JB |
5594 | /* Advance *NAMEP to next occurrence in the string NAME0 of the TARGET0 |
5595 | character which could start a simple name. Assumes that *NAMEP points | |
5596 | somewhere inside the string beginning at NAME0. */ | |
4c4b4cd2 | 5597 | |
14f9c5c9 | 5598 | static int |
59c8a30b | 5599 | advance_wild_match (const char **namep, const char *name0, char target0) |
14f9c5c9 | 5600 | { |
73589123 | 5601 | const char *name = *namep; |
5b4ee69b | 5602 | |
5823c3ef | 5603 | while (1) |
14f9c5c9 | 5604 | { |
59c8a30b | 5605 | char t0, t1; |
73589123 PH |
5606 | |
5607 | t0 = *name; | |
5608 | if (t0 == '_') | |
5609 | { | |
5610 | t1 = name[1]; | |
5611 | if ((t1 >= 'a' && t1 <= 'z') || (t1 >= '0' && t1 <= '9')) | |
5612 | { | |
5613 | name += 1; | |
61012eef | 5614 | if (name == name0 + 5 && startswith (name0, "_ada")) |
73589123 PH |
5615 | break; |
5616 | else | |
5617 | name += 1; | |
5618 | } | |
aa27d0b3 JB |
5619 | else if (t1 == '_' && ((name[2] >= 'a' && name[2] <= 'z') |
5620 | || name[2] == target0)) | |
73589123 PH |
5621 | { |
5622 | name += 2; | |
5623 | break; | |
5624 | } | |
86b44259 TT |
5625 | else if (t1 == '_' && name[2] == 'B' && name[3] == '_') |
5626 | { | |
5627 | /* Names like "pkg__B_N__name", where N is a number, are | |
5628 | block-local. We can handle these by simply skipping | |
5629 | the "B_" here. */ | |
5630 | name += 4; | |
5631 | } | |
73589123 PH |
5632 | else |
5633 | return 0; | |
5634 | } | |
5635 | else if ((t0 >= 'a' && t0 <= 'z') || (t0 >= '0' && t0 <= '9')) | |
5636 | name += 1; | |
5637 | else | |
5823c3ef | 5638 | return 0; |
73589123 PH |
5639 | } |
5640 | ||
5641 | *namep = name; | |
5642 | return 1; | |
5643 | } | |
5644 | ||
b5ec771e PA |
5645 | /* Return true iff NAME encodes a name of the form prefix.PATN. |
5646 | Ignores any informational suffixes of NAME (i.e., for which | |
5647 | is_name_suffix is true). Assumes that PATN is a lower-cased Ada | |
5648 | simple name. */ | |
73589123 | 5649 | |
b5ec771e | 5650 | static bool |
73589123 PH |
5651 | wild_match (const char *name, const char *patn) |
5652 | { | |
22e048c9 | 5653 | const char *p; |
73589123 PH |
5654 | const char *name0 = name; |
5655 | ||
5656 | while (1) | |
5657 | { | |
5658 | const char *match = name; | |
5659 | ||
5660 | if (*name == *patn) | |
5661 | { | |
5662 | for (name += 1, p = patn + 1; *p != '\0'; name += 1, p += 1) | |
5663 | if (*p != *name) | |
5664 | break; | |
5665 | if (*p == '\0' && is_name_suffix (name)) | |
b5ec771e | 5666 | return match == name0 || is_valid_name_for_wild_match (name0); |
73589123 PH |
5667 | |
5668 | if (name[-1] == '_') | |
5669 | name -= 1; | |
5670 | } | |
5671 | if (!advance_wild_match (&name, name0, *patn)) | |
b5ec771e | 5672 | return false; |
96d887e8 | 5673 | } |
96d887e8 PH |
5674 | } |
5675 | ||
d1183b06 | 5676 | /* Add symbols from BLOCK matching LOOKUP_NAME in DOMAIN to RESULT (if |
b5ec771e | 5677 | necessary). OBJFILE is the section containing BLOCK. */ |
96d887e8 PH |
5678 | |
5679 | static void | |
d1183b06 | 5680 | ada_add_block_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
5681 | const struct block *block, |
5682 | const lookup_name_info &lookup_name, | |
5683 | domain_enum domain, struct objfile *objfile) | |
96d887e8 | 5684 | { |
8157b174 | 5685 | struct block_iterator iter; |
96d887e8 PH |
5686 | /* A matching argument symbol, if any. */ |
5687 | struct symbol *arg_sym; | |
5688 | /* Set true when we find a matching non-argument symbol. */ | |
1178743e | 5689 | bool found_sym; |
96d887e8 PH |
5690 | struct symbol *sym; |
5691 | ||
5692 | arg_sym = NULL; | |
1178743e | 5693 | found_sym = false; |
b5ec771e PA |
5694 | for (sym = block_iter_match_first (block, lookup_name, &iter); |
5695 | sym != NULL; | |
5696 | sym = block_iter_match_next (lookup_name, &iter)) | |
96d887e8 | 5697 | { |
c1b5c1eb | 5698 | if (symbol_matches_domain (sym->language (), SYMBOL_DOMAIN (sym), domain)) |
b5ec771e PA |
5699 | { |
5700 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) | |
5701 | { | |
5702 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5703 | arg_sym = sym; | |
5704 | else | |
5705 | { | |
1178743e | 5706 | found_sym = true; |
d1183b06 | 5707 | add_defn_to_vec (result, |
b5ec771e PA |
5708 | fixup_symbol_section (sym, objfile), |
5709 | block); | |
5710 | } | |
5711 | } | |
5712 | } | |
96d887e8 PH |
5713 | } |
5714 | ||
22cee43f PMR |
5715 | /* Handle renamings. */ |
5716 | ||
d1183b06 | 5717 | if (ada_add_block_renamings (result, block, lookup_name, domain)) |
1178743e | 5718 | found_sym = true; |
22cee43f | 5719 | |
96d887e8 PH |
5720 | if (!found_sym && arg_sym != NULL) |
5721 | { | |
d1183b06 | 5722 | add_defn_to_vec (result, |
dda83cd7 SM |
5723 | fixup_symbol_section (arg_sym, objfile), |
5724 | block); | |
96d887e8 PH |
5725 | } |
5726 | ||
b5ec771e | 5727 | if (!lookup_name.ada ().wild_match_p ()) |
96d887e8 PH |
5728 | { |
5729 | arg_sym = NULL; | |
1178743e | 5730 | found_sym = false; |
b5ec771e PA |
5731 | const std::string &ada_lookup_name = lookup_name.ada ().lookup_name (); |
5732 | const char *name = ada_lookup_name.c_str (); | |
5733 | size_t name_len = ada_lookup_name.size (); | |
96d887e8 PH |
5734 | |
5735 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5736 | { |
dda83cd7 SM |
5737 | if (symbol_matches_domain (sym->language (), |
5738 | SYMBOL_DOMAIN (sym), domain)) | |
5739 | { | |
5740 | int cmp; | |
5741 | ||
5742 | cmp = (int) '_' - (int) sym->linkage_name ()[0]; | |
5743 | if (cmp == 0) | |
5744 | { | |
5745 | cmp = !startswith (sym->linkage_name (), "_ada_"); | |
5746 | if (cmp == 0) | |
5747 | cmp = strncmp (name, sym->linkage_name () + 5, | |
5748 | name_len); | |
5749 | } | |
5750 | ||
5751 | if (cmp == 0 | |
5752 | && is_name_suffix (sym->linkage_name () + name_len + 5)) | |
5753 | { | |
2a2d4dc3 AS |
5754 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5755 | { | |
5756 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5757 | arg_sym = sym; | |
5758 | else | |
5759 | { | |
1178743e | 5760 | found_sym = true; |
d1183b06 | 5761 | add_defn_to_vec (result, |
2a2d4dc3 AS |
5762 | fixup_symbol_section (sym, objfile), |
5763 | block); | |
5764 | } | |
5765 | } | |
dda83cd7 SM |
5766 | } |
5767 | } | |
76a01679 | 5768 | } |
96d887e8 PH |
5769 | |
5770 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
dda83cd7 | 5771 | They aren't parameters, right? */ |
96d887e8 | 5772 | if (!found_sym && arg_sym != NULL) |
dda83cd7 | 5773 | { |
d1183b06 | 5774 | add_defn_to_vec (result, |
dda83cd7 SM |
5775 | fixup_symbol_section (arg_sym, objfile), |
5776 | block); | |
5777 | } | |
96d887e8 PH |
5778 | } |
5779 | } | |
5780 | \f | |
41d27058 | 5781 | |
dda83cd7 | 5782 | /* Symbol Completion */ |
41d27058 | 5783 | |
b5ec771e | 5784 | /* See symtab.h. */ |
41d27058 | 5785 | |
b5ec771e PA |
5786 | bool |
5787 | ada_lookup_name_info::matches | |
5788 | (const char *sym_name, | |
5789 | symbol_name_match_type match_type, | |
a207cff2 | 5790 | completion_match_result *comp_match_res) const |
41d27058 | 5791 | { |
b5ec771e PA |
5792 | bool match = false; |
5793 | const char *text = m_encoded_name.c_str (); | |
5794 | size_t text_len = m_encoded_name.size (); | |
41d27058 JB |
5795 | |
5796 | /* First, test against the fully qualified name of the symbol. */ | |
5797 | ||
5798 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 5799 | match = true; |
41d27058 | 5800 | |
f945dedf | 5801 | std::string decoded_name = ada_decode (sym_name); |
b5ec771e | 5802 | if (match && !m_encoded_p) |
41d27058 JB |
5803 | { |
5804 | /* One needed check before declaring a positive match is to verify | |
dda83cd7 SM |
5805 | that iff we are doing a verbatim match, the decoded version |
5806 | of the symbol name starts with '<'. Otherwise, this symbol name | |
5807 | is not a suitable completion. */ | |
41d27058 | 5808 | |
f945dedf | 5809 | bool has_angle_bracket = (decoded_name[0] == '<'); |
b5ec771e | 5810 | match = (has_angle_bracket == m_verbatim_p); |
41d27058 JB |
5811 | } |
5812 | ||
b5ec771e | 5813 | if (match && !m_verbatim_p) |
41d27058 JB |
5814 | { |
5815 | /* When doing non-verbatim match, another check that needs to | |
dda83cd7 SM |
5816 | be done is to verify that the potentially matching symbol name |
5817 | does not include capital letters, because the ada-mode would | |
5818 | not be able to understand these symbol names without the | |
5819 | angle bracket notation. */ | |
41d27058 JB |
5820 | const char *tmp; |
5821 | ||
5822 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
5823 | if (*tmp != '\0') | |
b5ec771e | 5824 | match = false; |
41d27058 JB |
5825 | } |
5826 | ||
5827 | /* Second: Try wild matching... */ | |
5828 | ||
b5ec771e | 5829 | if (!match && m_wild_match_p) |
41d27058 JB |
5830 | { |
5831 | /* Since we are doing wild matching, this means that TEXT | |
dda83cd7 SM |
5832 | may represent an unqualified symbol name. We therefore must |
5833 | also compare TEXT against the unqualified name of the symbol. */ | |
f945dedf | 5834 | sym_name = ada_unqualified_name (decoded_name.c_str ()); |
41d27058 JB |
5835 | |
5836 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 5837 | match = true; |
41d27058 JB |
5838 | } |
5839 | ||
b5ec771e | 5840 | /* Finally: If we found a match, prepare the result to return. */ |
41d27058 JB |
5841 | |
5842 | if (!match) | |
b5ec771e | 5843 | return false; |
41d27058 | 5844 | |
a207cff2 | 5845 | if (comp_match_res != NULL) |
b5ec771e | 5846 | { |
a207cff2 | 5847 | std::string &match_str = comp_match_res->match.storage (); |
41d27058 | 5848 | |
b5ec771e | 5849 | if (!m_encoded_p) |
a207cff2 | 5850 | match_str = ada_decode (sym_name); |
b5ec771e PA |
5851 | else |
5852 | { | |
5853 | if (m_verbatim_p) | |
5854 | match_str = add_angle_brackets (sym_name); | |
5855 | else | |
5856 | match_str = sym_name; | |
41d27058 | 5857 | |
b5ec771e | 5858 | } |
a207cff2 PA |
5859 | |
5860 | comp_match_res->set_match (match_str.c_str ()); | |
41d27058 JB |
5861 | } |
5862 | ||
b5ec771e | 5863 | return true; |
41d27058 JB |
5864 | } |
5865 | ||
dda83cd7 | 5866 | /* Field Access */ |
96d887e8 | 5867 | |
73fb9985 JB |
5868 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5869 | for tagged types. */ | |
5870 | ||
5871 | static int | |
5872 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5873 | { | |
0d5cff50 | 5874 | const char *name; |
73fb9985 | 5875 | |
78134374 | 5876 | if (type->code () != TYPE_CODE_PTR) |
73fb9985 JB |
5877 | return 0; |
5878 | ||
7d93a1e0 | 5879 | name = TYPE_TARGET_TYPE (type)->name (); |
73fb9985 JB |
5880 | if (name == NULL) |
5881 | return 0; | |
5882 | ||
5883 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5884 | } | |
5885 | ||
ac4a2da4 JG |
5886 | /* Return non-zero if TYPE is an interface tag. */ |
5887 | ||
5888 | static int | |
5889 | ada_is_interface_tag (struct type *type) | |
5890 | { | |
7d93a1e0 | 5891 | const char *name = type->name (); |
ac4a2da4 JG |
5892 | |
5893 | if (name == NULL) | |
5894 | return 0; | |
5895 | ||
5896 | return (strcmp (name, "ada__tags__interface_tag") == 0); | |
5897 | } | |
5898 | ||
963a6417 PH |
5899 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5900 | to be invisible to users. */ | |
96d887e8 | 5901 | |
963a6417 PH |
5902 | int |
5903 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5904 | { |
1f704f76 | 5905 | if (field_num < 0 || field_num > type->num_fields ()) |
963a6417 | 5906 | return 1; |
ffde82bf | 5907 | |
73fb9985 JB |
5908 | /* Check the name of that field. */ |
5909 | { | |
5910 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5911 | ||
5912 | /* Anonymous field names should not be printed. | |
5913 | brobecker/2007-02-20: I don't think this can actually happen | |
30baf67b | 5914 | but we don't want to print the value of anonymous fields anyway. */ |
73fb9985 JB |
5915 | if (name == NULL) |
5916 | return 1; | |
5917 | ||
ffde82bf JB |
5918 | /* Normally, fields whose name start with an underscore ("_") |
5919 | are fields that have been internally generated by the compiler, | |
5920 | and thus should not be printed. The "_parent" field is special, | |
5921 | however: This is a field internally generated by the compiler | |
5922 | for tagged types, and it contains the components inherited from | |
5923 | the parent type. This field should not be printed as is, but | |
5924 | should not be ignored either. */ | |
61012eef | 5925 | if (name[0] == '_' && !startswith (name, "_parent")) |
73fb9985 JB |
5926 | return 1; |
5927 | } | |
5928 | ||
ac4a2da4 JG |
5929 | /* If this is the dispatch table of a tagged type or an interface tag, |
5930 | then ignore. */ | |
73fb9985 | 5931 | if (ada_is_tagged_type (type, 1) |
940da03e SM |
5932 | && (ada_is_dispatch_table_ptr_type (type->field (field_num).type ()) |
5933 | || ada_is_interface_tag (type->field (field_num).type ()))) | |
73fb9985 JB |
5934 | return 1; |
5935 | ||
5936 | /* Not a special field, so it should not be ignored. */ | |
5937 | return 0; | |
963a6417 | 5938 | } |
96d887e8 | 5939 | |
963a6417 | 5940 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
0963b4bd | 5941 | pointer or reference type whose ultimate target has a tag field. */ |
96d887e8 | 5942 | |
963a6417 PH |
5943 | int |
5944 | ada_is_tagged_type (struct type *type, int refok) | |
5945 | { | |
988f6b3d | 5946 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1) != NULL); |
963a6417 | 5947 | } |
96d887e8 | 5948 | |
963a6417 | 5949 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5950 | |
963a6417 PH |
5951 | int |
5952 | ada_is_tag_type (struct type *type) | |
5953 | { | |
460efde1 JB |
5954 | type = ada_check_typedef (type); |
5955 | ||
78134374 | 5956 | if (type == NULL || type->code () != TYPE_CODE_PTR) |
963a6417 PH |
5957 | return 0; |
5958 | else | |
96d887e8 | 5959 | { |
963a6417 | 5960 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5b4ee69b | 5961 | |
963a6417 | 5962 | return (name != NULL |
dda83cd7 | 5963 | && strcmp (name, "ada__tags__dispatch_table") == 0); |
96d887e8 | 5964 | } |
96d887e8 PH |
5965 | } |
5966 | ||
963a6417 | 5967 | /* The type of the tag on VAL. */ |
76a01679 | 5968 | |
de93309a | 5969 | static struct type * |
963a6417 | 5970 | ada_tag_type (struct value *val) |
96d887e8 | 5971 | { |
988f6b3d | 5972 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0); |
963a6417 | 5973 | } |
96d887e8 | 5974 | |
b50d69b5 JG |
5975 | /* Return 1 if TAG follows the old scheme for Ada tags (used for Ada 95, |
5976 | retired at Ada 05). */ | |
5977 | ||
5978 | static int | |
5979 | is_ada95_tag (struct value *tag) | |
5980 | { | |
5981 | return ada_value_struct_elt (tag, "tsd", 1) != NULL; | |
5982 | } | |
5983 | ||
963a6417 | 5984 | /* The value of the tag on VAL. */ |
96d887e8 | 5985 | |
de93309a | 5986 | static struct value * |
963a6417 PH |
5987 | ada_value_tag (struct value *val) |
5988 | { | |
03ee6b2e | 5989 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5990 | } |
5991 | ||
963a6417 PH |
5992 | /* The value of the tag on the object of type TYPE whose contents are |
5993 | saved at VALADDR, if it is non-null, or is at memory address | |
0963b4bd | 5994 | ADDRESS. */ |
96d887e8 | 5995 | |
963a6417 | 5996 | static struct value * |
10a2c479 | 5997 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5998 | const gdb_byte *valaddr, |
dda83cd7 | 5999 | CORE_ADDR address) |
96d887e8 | 6000 | { |
b5385fc0 | 6001 | int tag_byte_offset; |
963a6417 | 6002 | struct type *tag_type; |
5b4ee69b | 6003 | |
963a6417 | 6004 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, |
dda83cd7 | 6005 | NULL, NULL, NULL)) |
96d887e8 | 6006 | { |
fc1a4b47 | 6007 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
6008 | ? NULL |
6009 | : valaddr + tag_byte_offset); | |
963a6417 | 6010 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 6011 | |
963a6417 | 6012 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 6013 | } |
963a6417 PH |
6014 | return NULL; |
6015 | } | |
96d887e8 | 6016 | |
963a6417 PH |
6017 | static struct type * |
6018 | type_from_tag (struct value *tag) | |
6019 | { | |
f5272a3b | 6020 | gdb::unique_xmalloc_ptr<char> type_name = ada_tag_name (tag); |
5b4ee69b | 6021 | |
963a6417 | 6022 | if (type_name != NULL) |
5c4258f4 | 6023 | return ada_find_any_type (ada_encode (type_name.get ()).c_str ()); |
963a6417 PH |
6024 | return NULL; |
6025 | } | |
96d887e8 | 6026 | |
b50d69b5 JG |
6027 | /* Given a value OBJ of a tagged type, return a value of this |
6028 | type at the base address of the object. The base address, as | |
6029 | defined in Ada.Tags, it is the address of the primary tag of | |
6030 | the object, and therefore where the field values of its full | |
6031 | view can be fetched. */ | |
6032 | ||
6033 | struct value * | |
6034 | ada_tag_value_at_base_address (struct value *obj) | |
6035 | { | |
b50d69b5 JG |
6036 | struct value *val; |
6037 | LONGEST offset_to_top = 0; | |
6038 | struct type *ptr_type, *obj_type; | |
6039 | struct value *tag; | |
6040 | CORE_ADDR base_address; | |
6041 | ||
6042 | obj_type = value_type (obj); | |
6043 | ||
6044 | /* It is the responsability of the caller to deref pointers. */ | |
6045 | ||
78134374 | 6046 | if (obj_type->code () == TYPE_CODE_PTR || obj_type->code () == TYPE_CODE_REF) |
b50d69b5 JG |
6047 | return obj; |
6048 | ||
6049 | tag = ada_value_tag (obj); | |
6050 | if (!tag) | |
6051 | return obj; | |
6052 | ||
6053 | /* Base addresses only appeared with Ada 05 and multiple inheritance. */ | |
6054 | ||
6055 | if (is_ada95_tag (tag)) | |
6056 | return obj; | |
6057 | ||
08f49010 XR |
6058 | ptr_type = language_lookup_primitive_type |
6059 | (language_def (language_ada), target_gdbarch(), "storage_offset"); | |
b50d69b5 JG |
6060 | ptr_type = lookup_pointer_type (ptr_type); |
6061 | val = value_cast (ptr_type, tag); | |
6062 | if (!val) | |
6063 | return obj; | |
6064 | ||
6065 | /* It is perfectly possible that an exception be raised while | |
6066 | trying to determine the base address, just like for the tag; | |
6067 | see ada_tag_name for more details. We do not print the error | |
6068 | message for the same reason. */ | |
6069 | ||
a70b8144 | 6070 | try |
b50d69b5 JG |
6071 | { |
6072 | offset_to_top = value_as_long (value_ind (value_ptradd (val, -2))); | |
6073 | } | |
6074 | ||
230d2906 | 6075 | catch (const gdb_exception_error &e) |
492d29ea PA |
6076 | { |
6077 | return obj; | |
6078 | } | |
b50d69b5 JG |
6079 | |
6080 | /* If offset is null, nothing to do. */ | |
6081 | ||
6082 | if (offset_to_top == 0) | |
6083 | return obj; | |
6084 | ||
6085 | /* -1 is a special case in Ada.Tags; however, what should be done | |
6086 | is not quite clear from the documentation. So do nothing for | |
6087 | now. */ | |
6088 | ||
6089 | if (offset_to_top == -1) | |
6090 | return obj; | |
6091 | ||
08f49010 XR |
6092 | /* OFFSET_TO_TOP used to be a positive value to be subtracted |
6093 | from the base address. This was however incompatible with | |
6094 | C++ dispatch table: C++ uses a *negative* value to *add* | |
6095 | to the base address. Ada's convention has therefore been | |
6096 | changed in GNAT 19.0w 20171023: since then, C++ and Ada | |
6097 | use the same convention. Here, we support both cases by | |
6098 | checking the sign of OFFSET_TO_TOP. */ | |
6099 | ||
6100 | if (offset_to_top > 0) | |
6101 | offset_to_top = -offset_to_top; | |
6102 | ||
6103 | base_address = value_address (obj) + offset_to_top; | |
b50d69b5 JG |
6104 | tag = value_tag_from_contents_and_address (obj_type, NULL, base_address); |
6105 | ||
6106 | /* Make sure that we have a proper tag at the new address. | |
6107 | Otherwise, offset_to_top is bogus (which can happen when | |
6108 | the object is not initialized yet). */ | |
6109 | ||
6110 | if (!tag) | |
6111 | return obj; | |
6112 | ||
6113 | obj_type = type_from_tag (tag); | |
6114 | ||
6115 | if (!obj_type) | |
6116 | return obj; | |
6117 | ||
6118 | return value_from_contents_and_address (obj_type, NULL, base_address); | |
6119 | } | |
6120 | ||
1b611343 JB |
6121 | /* Return the "ada__tags__type_specific_data" type. */ |
6122 | ||
6123 | static struct type * | |
6124 | ada_get_tsd_type (struct inferior *inf) | |
963a6417 | 6125 | { |
1b611343 | 6126 | struct ada_inferior_data *data = get_ada_inferior_data (inf); |
4c4b4cd2 | 6127 | |
1b611343 JB |
6128 | if (data->tsd_type == 0) |
6129 | data->tsd_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
6130 | return data->tsd_type; | |
6131 | } | |
529cad9c | 6132 | |
1b611343 JB |
6133 | /* Return the TSD (type-specific data) associated to the given TAG. |
6134 | TAG is assumed to be the tag of a tagged-type entity. | |
529cad9c | 6135 | |
1b611343 | 6136 | May return NULL if we are unable to get the TSD. */ |
4c4b4cd2 | 6137 | |
1b611343 JB |
6138 | static struct value * |
6139 | ada_get_tsd_from_tag (struct value *tag) | |
4c4b4cd2 | 6140 | { |
4c4b4cd2 | 6141 | struct value *val; |
1b611343 | 6142 | struct type *type; |
5b4ee69b | 6143 | |
1b611343 JB |
6144 | /* First option: The TSD is simply stored as a field of our TAG. |
6145 | Only older versions of GNAT would use this format, but we have | |
6146 | to test it first, because there are no visible markers for | |
6147 | the current approach except the absence of that field. */ | |
529cad9c | 6148 | |
1b611343 JB |
6149 | val = ada_value_struct_elt (tag, "tsd", 1); |
6150 | if (val) | |
6151 | return val; | |
e802dbe0 | 6152 | |
1b611343 JB |
6153 | /* Try the second representation for the dispatch table (in which |
6154 | there is no explicit 'tsd' field in the referent of the tag pointer, | |
6155 | and instead the tsd pointer is stored just before the dispatch | |
6156 | table. */ | |
e802dbe0 | 6157 | |
1b611343 JB |
6158 | type = ada_get_tsd_type (current_inferior()); |
6159 | if (type == NULL) | |
6160 | return NULL; | |
6161 | type = lookup_pointer_type (lookup_pointer_type (type)); | |
6162 | val = value_cast (type, tag); | |
6163 | if (val == NULL) | |
6164 | return NULL; | |
6165 | return value_ind (value_ptradd (val, -1)); | |
e802dbe0 JB |
6166 | } |
6167 | ||
1b611343 JB |
6168 | /* Given the TSD of a tag (type-specific data), return a string |
6169 | containing the name of the associated type. | |
6170 | ||
f5272a3b | 6171 | May return NULL if we are unable to determine the tag name. */ |
1b611343 | 6172 | |
f5272a3b | 6173 | static gdb::unique_xmalloc_ptr<char> |
1b611343 | 6174 | ada_tag_name_from_tsd (struct value *tsd) |
529cad9c | 6175 | { |
529cad9c | 6176 | char *p; |
1b611343 | 6177 | struct value *val; |
529cad9c | 6178 | |
1b611343 | 6179 | val = ada_value_struct_elt (tsd, "expanded_name", 1); |
4c4b4cd2 | 6180 | if (val == NULL) |
1b611343 | 6181 | return NULL; |
66920317 TT |
6182 | gdb::unique_xmalloc_ptr<char> buffer |
6183 | = target_read_string (value_as_address (val), INT_MAX); | |
6184 | if (buffer == nullptr) | |
f5272a3b TT |
6185 | return nullptr; |
6186 | ||
6187 | for (p = buffer.get (); *p != '\0'; ++p) | |
6188 | { | |
6189 | if (isalpha (*p)) | |
6190 | *p = tolower (*p); | |
6191 | } | |
6192 | ||
6193 | return buffer; | |
4c4b4cd2 PH |
6194 | } |
6195 | ||
6196 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
1b611343 JB |
6197 | a C string. |
6198 | ||
6199 | Return NULL if the TAG is not an Ada tag, or if we were unable to | |
f5272a3b | 6200 | determine the name of that tag. */ |
4c4b4cd2 | 6201 | |
f5272a3b | 6202 | gdb::unique_xmalloc_ptr<char> |
4c4b4cd2 PH |
6203 | ada_tag_name (struct value *tag) |
6204 | { | |
f5272a3b | 6205 | gdb::unique_xmalloc_ptr<char> name; |
5b4ee69b | 6206 | |
df407dfe | 6207 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 6208 | return NULL; |
1b611343 JB |
6209 | |
6210 | /* It is perfectly possible that an exception be raised while trying | |
6211 | to determine the TAG's name, even under normal circumstances: | |
6212 | The associated variable may be uninitialized or corrupted, for | |
6213 | instance. We do not let any exception propagate past this point. | |
6214 | instead we return NULL. | |
6215 | ||
6216 | We also do not print the error message either (which often is very | |
6217 | low-level (Eg: "Cannot read memory at 0x[...]"), but instead let | |
6218 | the caller print a more meaningful message if necessary. */ | |
a70b8144 | 6219 | try |
1b611343 JB |
6220 | { |
6221 | struct value *tsd = ada_get_tsd_from_tag (tag); | |
6222 | ||
6223 | if (tsd != NULL) | |
6224 | name = ada_tag_name_from_tsd (tsd); | |
6225 | } | |
230d2906 | 6226 | catch (const gdb_exception_error &e) |
492d29ea PA |
6227 | { |
6228 | } | |
1b611343 JB |
6229 | |
6230 | return name; | |
4c4b4cd2 PH |
6231 | } |
6232 | ||
6233 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 6234 | |
d2e4a39e | 6235 | struct type * |
ebf56fd3 | 6236 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
6237 | { |
6238 | int i; | |
6239 | ||
61ee279c | 6240 | type = ada_check_typedef (type); |
14f9c5c9 | 6241 | |
78134374 | 6242 | if (type == NULL || type->code () != TYPE_CODE_STRUCT) |
14f9c5c9 AS |
6243 | return NULL; |
6244 | ||
1f704f76 | 6245 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 6246 | if (ada_is_parent_field (type, i)) |
0c1f74cf | 6247 | { |
dda83cd7 | 6248 | struct type *parent_type = type->field (i).type (); |
0c1f74cf | 6249 | |
dda83cd7 SM |
6250 | /* If the _parent field is a pointer, then dereference it. */ |
6251 | if (parent_type->code () == TYPE_CODE_PTR) | |
6252 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
6253 | /* If there is a parallel XVS type, get the actual base type. */ | |
6254 | parent_type = ada_get_base_type (parent_type); | |
0c1f74cf | 6255 | |
dda83cd7 | 6256 | return ada_check_typedef (parent_type); |
0c1f74cf | 6257 | } |
14f9c5c9 AS |
6258 | |
6259 | return NULL; | |
6260 | } | |
6261 | ||
4c4b4cd2 PH |
6262 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
6263 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
6264 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6265 | |
6266 | int | |
ebf56fd3 | 6267 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 6268 | { |
61ee279c | 6269 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
5b4ee69b | 6270 | |
4c4b4cd2 | 6271 | return (name != NULL |
dda83cd7 SM |
6272 | && (startswith (name, "PARENT") |
6273 | || startswith (name, "_parent"))); | |
14f9c5c9 AS |
6274 | } |
6275 | ||
4c4b4cd2 | 6276 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 6277 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 6278 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 6279 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 6280 | structures. */ |
14f9c5c9 AS |
6281 | |
6282 | int | |
ebf56fd3 | 6283 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 6284 | { |
d2e4a39e | 6285 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 6286 | |
dddc0e16 JB |
6287 | if (name != NULL && strcmp (name, "RETVAL") == 0) |
6288 | { | |
6289 | /* This happens in functions with "out" or "in out" parameters | |
6290 | which are passed by copy. For such functions, GNAT describes | |
6291 | the function's return type as being a struct where the return | |
6292 | value is in a field called RETVAL, and where the other "out" | |
6293 | or "in out" parameters are fields of that struct. This is not | |
6294 | a wrapper. */ | |
6295 | return 0; | |
6296 | } | |
6297 | ||
d2e4a39e | 6298 | return (name != NULL |
dda83cd7 SM |
6299 | && (startswith (name, "PARENT") |
6300 | || strcmp (name, "REP") == 0 | |
6301 | || startswith (name, "_parent") | |
6302 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
6303 | } |
6304 | ||
4c4b4cd2 PH |
6305 | /* True iff field number FIELD_NUM of structure or union type TYPE |
6306 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
6307 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6308 | |
6309 | int | |
ebf56fd3 | 6310 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 6311 | { |
8ecb59f8 TT |
6312 | /* Only Ada types are eligible. */ |
6313 | if (!ADA_TYPE_P (type)) | |
6314 | return 0; | |
6315 | ||
940da03e | 6316 | struct type *field_type = type->field (field_num).type (); |
5b4ee69b | 6317 | |
78134374 SM |
6318 | return (field_type->code () == TYPE_CODE_UNION |
6319 | || (is_dynamic_field (type, field_num) | |
6320 | && (TYPE_TARGET_TYPE (field_type)->code () | |
c3e5cd34 | 6321 | == TYPE_CODE_UNION))); |
14f9c5c9 AS |
6322 | } |
6323 | ||
6324 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 6325 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
6326 | returns the type of the controlling discriminant for the variant. |
6327 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 6328 | |
d2e4a39e | 6329 | struct type * |
ebf56fd3 | 6330 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 6331 | { |
a121b7c1 | 6332 | const char *name = ada_variant_discrim_name (var_type); |
5b4ee69b | 6333 | |
988f6b3d | 6334 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1); |
14f9c5c9 AS |
6335 | } |
6336 | ||
4c4b4cd2 | 6337 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 6338 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 6339 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 | 6340 | |
de93309a | 6341 | static int |
ebf56fd3 | 6342 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 6343 | { |
d2e4a39e | 6344 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 6345 | |
14f9c5c9 AS |
6346 | return (name != NULL && name[0] == 'O'); |
6347 | } | |
6348 | ||
6349 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
6350 | returns the name of the discriminant controlling the variant. |
6351 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 6352 | |
a121b7c1 | 6353 | const char * |
ebf56fd3 | 6354 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 6355 | { |
5f9febe0 | 6356 | static std::string result; |
d2e4a39e AS |
6357 | struct type *type; |
6358 | const char *name; | |
6359 | const char *discrim_end; | |
6360 | const char *discrim_start; | |
14f9c5c9 | 6361 | |
78134374 | 6362 | if (type0->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
6363 | type = TYPE_TARGET_TYPE (type0); |
6364 | else | |
6365 | type = type0; | |
6366 | ||
6367 | name = ada_type_name (type); | |
6368 | ||
6369 | if (name == NULL || name[0] == '\000') | |
6370 | return ""; | |
6371 | ||
6372 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
6373 | discrim_end -= 1) | |
6374 | { | |
61012eef | 6375 | if (startswith (discrim_end, "___XVN")) |
dda83cd7 | 6376 | break; |
14f9c5c9 AS |
6377 | } |
6378 | if (discrim_end == name) | |
6379 | return ""; | |
6380 | ||
d2e4a39e | 6381 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
6382 | discrim_start -= 1) |
6383 | { | |
d2e4a39e | 6384 | if (discrim_start == name + 1) |
dda83cd7 | 6385 | return ""; |
76a01679 | 6386 | if ((discrim_start > name + 3 |
dda83cd7 SM |
6387 | && startswith (discrim_start - 3, "___")) |
6388 | || discrim_start[-1] == '.') | |
6389 | break; | |
14f9c5c9 AS |
6390 | } |
6391 | ||
5f9febe0 TT |
6392 | result = std::string (discrim_start, discrim_end - discrim_start); |
6393 | return result.c_str (); | |
14f9c5c9 AS |
6394 | } |
6395 | ||
4c4b4cd2 PH |
6396 | /* Scan STR for a subtype-encoded number, beginning at position K. |
6397 | Put the position of the character just past the number scanned in | |
6398 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
6399 | Return 1 if there was a valid number at the given position, and 0 | |
6400 | otherwise. A "subtype-encoded" number consists of the absolute value | |
6401 | in decimal, followed by the letter 'm' to indicate a negative number. | |
6402 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
6403 | |
6404 | int | |
d2e4a39e | 6405 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
6406 | { |
6407 | ULONGEST RU; | |
6408 | ||
d2e4a39e | 6409 | if (!isdigit (str[k])) |
14f9c5c9 AS |
6410 | return 0; |
6411 | ||
4c4b4cd2 | 6412 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 6413 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 6414 | LONGEST. */ |
14f9c5c9 AS |
6415 | RU = 0; |
6416 | while (isdigit (str[k])) | |
6417 | { | |
d2e4a39e | 6418 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
6419 | k += 1; |
6420 | } | |
6421 | ||
d2e4a39e | 6422 | if (str[k] == 'm') |
14f9c5c9 AS |
6423 | { |
6424 | if (R != NULL) | |
dda83cd7 | 6425 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
6426 | k += 1; |
6427 | } | |
6428 | else if (R != NULL) | |
6429 | *R = (LONGEST) RU; | |
6430 | ||
4c4b4cd2 | 6431 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
6432 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
6433 | number representable as a LONGEST (although either would probably work | |
6434 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 6435 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
6436 | |
6437 | if (new_k != NULL) | |
6438 | *new_k = k; | |
6439 | return 1; | |
6440 | } | |
6441 | ||
4c4b4cd2 PH |
6442 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
6443 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
6444 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 6445 | |
de93309a | 6446 | static int |
ebf56fd3 | 6447 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 6448 | { |
d2e4a39e | 6449 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
6450 | int p; |
6451 | ||
6452 | p = 0; | |
6453 | while (1) | |
6454 | { | |
d2e4a39e | 6455 | switch (name[p]) |
dda83cd7 SM |
6456 | { |
6457 | case '\0': | |
6458 | return 0; | |
6459 | case 'S': | |
6460 | { | |
6461 | LONGEST W; | |
6462 | ||
6463 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
6464 | return 0; | |
6465 | if (val == W) | |
6466 | return 1; | |
6467 | break; | |
6468 | } | |
6469 | case 'R': | |
6470 | { | |
6471 | LONGEST L, U; | |
6472 | ||
6473 | if (!ada_scan_number (name, p + 1, &L, &p) | |
6474 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
6475 | return 0; | |
6476 | if (val >= L && val <= U) | |
6477 | return 1; | |
6478 | break; | |
6479 | } | |
6480 | case 'O': | |
6481 | return 1; | |
6482 | default: | |
6483 | return 0; | |
6484 | } | |
4c4b4cd2 PH |
6485 | } |
6486 | } | |
6487 | ||
0963b4bd | 6488 | /* FIXME: Lots of redundancy below. Try to consolidate. */ |
4c4b4cd2 PH |
6489 | |
6490 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
6491 | ARG_TYPE, extract and return the value of one of its (non-static) | |
6492 | fields. FIELDNO says which field. Differs from value_primitive_field | |
6493 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 6494 | |
5eb68a39 | 6495 | struct value * |
d2e4a39e | 6496 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
dda83cd7 | 6497 | struct type *arg_type) |
14f9c5c9 | 6498 | { |
14f9c5c9 AS |
6499 | struct type *type; |
6500 | ||
61ee279c | 6501 | arg_type = ada_check_typedef (arg_type); |
940da03e | 6502 | type = arg_type->field (fieldno).type (); |
14f9c5c9 | 6503 | |
4504bbde TT |
6504 | /* Handle packed fields. It might be that the field is not packed |
6505 | relative to its containing structure, but the structure itself is | |
6506 | packed; in this case we must take the bit-field path. */ | |
6507 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0 || value_bitpos (arg1) != 0) | |
14f9c5c9 AS |
6508 | { |
6509 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
6510 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 6511 | |
0fd88904 | 6512 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
dda83cd7 SM |
6513 | offset + bit_pos / 8, |
6514 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
6515 | } |
6516 | else | |
6517 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
6518 | } | |
6519 | ||
52ce6436 PH |
6520 | /* Find field with name NAME in object of type TYPE. If found, |
6521 | set the following for each argument that is non-null: | |
6522 | - *FIELD_TYPE_P to the field's type; | |
6523 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
6524 | an object of that type; | |
6525 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
6526 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
6527 | 0 otherwise; | |
6528 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
6529 | fields up to but not including the desired field, or by the total | |
6530 | number of fields if not found. A NULL value of NAME never | |
6531 | matches; the function just counts visible fields in this case. | |
6532 | ||
828d5846 XR |
6533 | Notice that we need to handle when a tagged record hierarchy |
6534 | has some components with the same name, like in this scenario: | |
6535 | ||
6536 | type Top_T is tagged record | |
dda83cd7 SM |
6537 | N : Integer := 1; |
6538 | U : Integer := 974; | |
6539 | A : Integer := 48; | |
828d5846 XR |
6540 | end record; |
6541 | ||
6542 | type Middle_T is new Top.Top_T with record | |
dda83cd7 SM |
6543 | N : Character := 'a'; |
6544 | C : Integer := 3; | |
828d5846 XR |
6545 | end record; |
6546 | ||
6547 | type Bottom_T is new Middle.Middle_T with record | |
dda83cd7 SM |
6548 | N : Float := 4.0; |
6549 | C : Character := '5'; | |
6550 | X : Integer := 6; | |
6551 | A : Character := 'J'; | |
828d5846 XR |
6552 | end record; |
6553 | ||
6554 | Let's say we now have a variable declared and initialized as follow: | |
6555 | ||
6556 | TC : Top_A := new Bottom_T; | |
6557 | ||
6558 | And then we use this variable to call this function | |
6559 | ||
6560 | procedure Assign (Obj: in out Top_T; TV : Integer); | |
6561 | ||
6562 | as follow: | |
6563 | ||
6564 | Assign (Top_T (B), 12); | |
6565 | ||
6566 | Now, we're in the debugger, and we're inside that procedure | |
6567 | then and we want to print the value of obj.c: | |
6568 | ||
6569 | Usually, the tagged record or one of the parent type owns the | |
6570 | component to print and there's no issue but in this particular | |
6571 | case, what does it mean to ask for Obj.C? Since the actual | |
6572 | type for object is type Bottom_T, it could mean two things: type | |
6573 | component C from the Middle_T view, but also component C from | |
6574 | Bottom_T. So in that "undefined" case, when the component is | |
6575 | not found in the non-resolved type (which includes all the | |
6576 | components of the parent type), then resolve it and see if we | |
6577 | get better luck once expanded. | |
6578 | ||
6579 | In the case of homonyms in the derived tagged type, we don't | |
6580 | guaranty anything, and pick the one that's easiest for us | |
6581 | to program. | |
6582 | ||
0963b4bd | 6583 | Returns 1 if found, 0 otherwise. */ |
52ce6436 | 6584 | |
4c4b4cd2 | 6585 | static int |
0d5cff50 | 6586 | find_struct_field (const char *name, struct type *type, int offset, |
dda83cd7 SM |
6587 | struct type **field_type_p, |
6588 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, | |
52ce6436 | 6589 | int *index_p) |
4c4b4cd2 PH |
6590 | { |
6591 | int i; | |
828d5846 | 6592 | int parent_offset = -1; |
4c4b4cd2 | 6593 | |
61ee279c | 6594 | type = ada_check_typedef (type); |
76a01679 | 6595 | |
52ce6436 PH |
6596 | if (field_type_p != NULL) |
6597 | *field_type_p = NULL; | |
6598 | if (byte_offset_p != NULL) | |
d5d6fca5 | 6599 | *byte_offset_p = 0; |
52ce6436 PH |
6600 | if (bit_offset_p != NULL) |
6601 | *bit_offset_p = 0; | |
6602 | if (bit_size_p != NULL) | |
6603 | *bit_size_p = 0; | |
6604 | ||
1f704f76 | 6605 | for (i = 0; i < type->num_fields (); i += 1) |
4c4b4cd2 PH |
6606 | { |
6607 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
6608 | int fld_offset = offset + bit_pos / 8; | |
0d5cff50 | 6609 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
76a01679 | 6610 | |
4c4b4cd2 | 6611 | if (t_field_name == NULL) |
dda83cd7 | 6612 | continue; |
4c4b4cd2 | 6613 | |
828d5846 | 6614 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 6615 | { |
828d5846 XR |
6616 | /* This is a field pointing us to the parent type of a tagged |
6617 | type. As hinted in this function's documentation, we give | |
6618 | preference to fields in the current record first, so what | |
6619 | we do here is just record the index of this field before | |
6620 | we skip it. If it turns out we couldn't find our field | |
6621 | in the current record, then we'll get back to it and search | |
6622 | inside it whether the field might exist in the parent. */ | |
6623 | ||
dda83cd7 SM |
6624 | parent_offset = i; |
6625 | continue; | |
6626 | } | |
828d5846 | 6627 | |
52ce6436 | 6628 | else if (name != NULL && field_name_match (t_field_name, name)) |
dda83cd7 SM |
6629 | { |
6630 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5b4ee69b | 6631 | |
52ce6436 | 6632 | if (field_type_p != NULL) |
940da03e | 6633 | *field_type_p = type->field (i).type (); |
52ce6436 PH |
6634 | if (byte_offset_p != NULL) |
6635 | *byte_offset_p = fld_offset; | |
6636 | if (bit_offset_p != NULL) | |
6637 | *bit_offset_p = bit_pos % 8; | |
6638 | if (bit_size_p != NULL) | |
6639 | *bit_size_p = bit_size; | |
dda83cd7 SM |
6640 | return 1; |
6641 | } | |
4c4b4cd2 | 6642 | else if (ada_is_wrapper_field (type, i)) |
dda83cd7 | 6643 | { |
940da03e | 6644 | if (find_struct_field (name, type->field (i).type (), fld_offset, |
52ce6436 PH |
6645 | field_type_p, byte_offset_p, bit_offset_p, |
6646 | bit_size_p, index_p)) | |
dda83cd7 SM |
6647 | return 1; |
6648 | } | |
4c4b4cd2 | 6649 | else if (ada_is_variant_part (type, i)) |
dda83cd7 | 6650 | { |
52ce6436 PH |
6651 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
6652 | fixed type?? */ | |
dda83cd7 SM |
6653 | int j; |
6654 | struct type *field_type | |
940da03e | 6655 | = ada_check_typedef (type->field (i).type ()); |
4c4b4cd2 | 6656 | |
dda83cd7 SM |
6657 | for (j = 0; j < field_type->num_fields (); j += 1) |
6658 | { | |
6659 | if (find_struct_field (name, field_type->field (j).type (), | |
6660 | fld_offset | |
6661 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6662 | field_type_p, byte_offset_p, | |
6663 | bit_offset_p, bit_size_p, index_p)) | |
6664 | return 1; | |
6665 | } | |
6666 | } | |
52ce6436 PH |
6667 | else if (index_p != NULL) |
6668 | *index_p += 1; | |
4c4b4cd2 | 6669 | } |
828d5846 XR |
6670 | |
6671 | /* Field not found so far. If this is a tagged type which | |
6672 | has a parent, try finding that field in the parent now. */ | |
6673 | ||
6674 | if (parent_offset != -1) | |
6675 | { | |
6676 | int bit_pos = TYPE_FIELD_BITPOS (type, parent_offset); | |
6677 | int fld_offset = offset + bit_pos / 8; | |
6678 | ||
940da03e | 6679 | if (find_struct_field (name, type->field (parent_offset).type (), |
dda83cd7 SM |
6680 | fld_offset, field_type_p, byte_offset_p, |
6681 | bit_offset_p, bit_size_p, index_p)) | |
6682 | return 1; | |
828d5846 XR |
6683 | } |
6684 | ||
4c4b4cd2 PH |
6685 | return 0; |
6686 | } | |
6687 | ||
0963b4bd | 6688 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 6689 | |
52ce6436 PH |
6690 | static int |
6691 | num_visible_fields (struct type *type) | |
6692 | { | |
6693 | int n; | |
5b4ee69b | 6694 | |
52ce6436 PH |
6695 | n = 0; |
6696 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
6697 | return n; | |
6698 | } | |
14f9c5c9 | 6699 | |
4c4b4cd2 | 6700 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
6701 | and search in it assuming it has (class) type TYPE. |
6702 | If found, return value, else return NULL. | |
6703 | ||
828d5846 XR |
6704 | Searches recursively through wrapper fields (e.g., '_parent'). |
6705 | ||
6706 | In the case of homonyms in the tagged types, please refer to the | |
6707 | long explanation in find_struct_field's function documentation. */ | |
14f9c5c9 | 6708 | |
4c4b4cd2 | 6709 | static struct value * |
108d56a4 | 6710 | ada_search_struct_field (const char *name, struct value *arg, int offset, |
dda83cd7 | 6711 | struct type *type) |
14f9c5c9 AS |
6712 | { |
6713 | int i; | |
828d5846 | 6714 | int parent_offset = -1; |
14f9c5c9 | 6715 | |
5b4ee69b | 6716 | type = ada_check_typedef (type); |
1f704f76 | 6717 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 6718 | { |
0d5cff50 | 6719 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 AS |
6720 | |
6721 | if (t_field_name == NULL) | |
dda83cd7 | 6722 | continue; |
14f9c5c9 | 6723 | |
828d5846 | 6724 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 6725 | { |
828d5846 XR |
6726 | /* This is a field pointing us to the parent type of a tagged |
6727 | type. As hinted in this function's documentation, we give | |
6728 | preference to fields in the current record first, so what | |
6729 | we do here is just record the index of this field before | |
6730 | we skip it. If it turns out we couldn't find our field | |
6731 | in the current record, then we'll get back to it and search | |
6732 | inside it whether the field might exist in the parent. */ | |
6733 | ||
dda83cd7 SM |
6734 | parent_offset = i; |
6735 | continue; | |
6736 | } | |
828d5846 | 6737 | |
14f9c5c9 | 6738 | else if (field_name_match (t_field_name, name)) |
dda83cd7 | 6739 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
6740 | |
6741 | else if (ada_is_wrapper_field (type, i)) | |
dda83cd7 SM |
6742 | { |
6743 | struct value *v = /* Do not let indent join lines here. */ | |
6744 | ada_search_struct_field (name, arg, | |
6745 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6746 | type->field (i).type ()); | |
5b4ee69b | 6747 | |
dda83cd7 SM |
6748 | if (v != NULL) |
6749 | return v; | |
6750 | } | |
14f9c5c9 AS |
6751 | |
6752 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 | 6753 | { |
0963b4bd | 6754 | /* PNH: Do we ever get here? See find_struct_field. */ |
dda83cd7 SM |
6755 | int j; |
6756 | struct type *field_type = ada_check_typedef (type->field (i).type ()); | |
6757 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; | |
4c4b4cd2 | 6758 | |
dda83cd7 SM |
6759 | for (j = 0; j < field_type->num_fields (); j += 1) |
6760 | { | |
6761 | struct value *v = ada_search_struct_field /* Force line | |
0963b4bd | 6762 | break. */ |
dda83cd7 SM |
6763 | (name, arg, |
6764 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6765 | field_type->field (j).type ()); | |
5b4ee69b | 6766 | |
dda83cd7 SM |
6767 | if (v != NULL) |
6768 | return v; | |
6769 | } | |
6770 | } | |
14f9c5c9 | 6771 | } |
828d5846 XR |
6772 | |
6773 | /* Field not found so far. If this is a tagged type which | |
6774 | has a parent, try finding that field in the parent now. */ | |
6775 | ||
6776 | if (parent_offset != -1) | |
6777 | { | |
6778 | struct value *v = ada_search_struct_field ( | |
6779 | name, arg, offset + TYPE_FIELD_BITPOS (type, parent_offset) / 8, | |
940da03e | 6780 | type->field (parent_offset).type ()); |
828d5846 XR |
6781 | |
6782 | if (v != NULL) | |
dda83cd7 | 6783 | return v; |
828d5846 XR |
6784 | } |
6785 | ||
14f9c5c9 AS |
6786 | return NULL; |
6787 | } | |
d2e4a39e | 6788 | |
52ce6436 PH |
6789 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
6790 | int, struct type *); | |
6791 | ||
6792 | ||
6793 | /* Return field #INDEX in ARG, where the index is that returned by | |
6794 | * find_struct_field through its INDEX_P argument. Adjust the address | |
6795 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
0963b4bd | 6796 | * If found, return value, else return NULL. */ |
52ce6436 PH |
6797 | |
6798 | static struct value * | |
6799 | ada_index_struct_field (int index, struct value *arg, int offset, | |
6800 | struct type *type) | |
6801 | { | |
6802 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
6803 | } | |
6804 | ||
6805 | ||
6806 | /* Auxiliary function for ada_index_struct_field. Like | |
6807 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
0963b4bd | 6808 | * *INDEX_P. */ |
52ce6436 PH |
6809 | |
6810 | static struct value * | |
6811 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
6812 | struct type *type) | |
6813 | { | |
6814 | int i; | |
6815 | type = ada_check_typedef (type); | |
6816 | ||
1f704f76 | 6817 | for (i = 0; i < type->num_fields (); i += 1) |
52ce6436 PH |
6818 | { |
6819 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
dda83cd7 | 6820 | continue; |
52ce6436 | 6821 | else if (ada_is_wrapper_field (type, i)) |
dda83cd7 SM |
6822 | { |
6823 | struct value *v = /* Do not let indent join lines here. */ | |
6824 | ada_index_struct_field_1 (index_p, arg, | |
52ce6436 | 6825 | offset + TYPE_FIELD_BITPOS (type, i) / 8, |
940da03e | 6826 | type->field (i).type ()); |
5b4ee69b | 6827 | |
dda83cd7 SM |
6828 | if (v != NULL) |
6829 | return v; | |
6830 | } | |
52ce6436 PH |
6831 | |
6832 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 | 6833 | { |
52ce6436 | 6834 | /* PNH: Do we ever get here? See ada_search_struct_field, |
0963b4bd | 6835 | find_struct_field. */ |
52ce6436 | 6836 | error (_("Cannot assign this kind of variant record")); |
dda83cd7 | 6837 | } |
52ce6436 | 6838 | else if (*index_p == 0) |
dda83cd7 | 6839 | return ada_value_primitive_field (arg, offset, i, type); |
52ce6436 PH |
6840 | else |
6841 | *index_p -= 1; | |
6842 | } | |
6843 | return NULL; | |
6844 | } | |
6845 | ||
3b4de39c | 6846 | /* Return a string representation of type TYPE. */ |
99bbb428 | 6847 | |
3b4de39c | 6848 | static std::string |
99bbb428 PA |
6849 | type_as_string (struct type *type) |
6850 | { | |
d7e74731 | 6851 | string_file tmp_stream; |
99bbb428 | 6852 | |
d7e74731 | 6853 | type_print (type, "", &tmp_stream, -1); |
99bbb428 | 6854 | |
d7e74731 | 6855 | return std::move (tmp_stream.string ()); |
99bbb428 PA |
6856 | } |
6857 | ||
14f9c5c9 | 6858 | /* Given a type TYPE, look up the type of the component of type named NAME. |
4c4b4cd2 PH |
6859 | If DISPP is non-null, add its byte displacement from the beginning of a |
6860 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6861 | work for packed fields). |
6862 | ||
6863 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6864 | followed by "___". |
14f9c5c9 | 6865 | |
0963b4bd | 6866 | TYPE can be either a struct or union. If REFOK, TYPE may also |
4c4b4cd2 PH |
6867 | be a (pointer or reference)+ to a struct or union, and the |
6868 | ultimate target type will be searched. | |
14f9c5c9 AS |
6869 | |
6870 | Looks recursively into variant clauses and parent types. | |
6871 | ||
828d5846 XR |
6872 | In the case of homonyms in the tagged types, please refer to the |
6873 | long explanation in find_struct_field's function documentation. | |
6874 | ||
4c4b4cd2 PH |
6875 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6876 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6877 | |
4c4b4cd2 | 6878 | static struct type * |
a121b7c1 | 6879 | ada_lookup_struct_elt_type (struct type *type, const char *name, int refok, |
dda83cd7 | 6880 | int noerr) |
14f9c5c9 AS |
6881 | { |
6882 | int i; | |
828d5846 | 6883 | int parent_offset = -1; |
14f9c5c9 AS |
6884 | |
6885 | if (name == NULL) | |
6886 | goto BadName; | |
6887 | ||
76a01679 | 6888 | if (refok && type != NULL) |
4c4b4cd2 PH |
6889 | while (1) |
6890 | { | |
dda83cd7 SM |
6891 | type = ada_check_typedef (type); |
6892 | if (type->code () != TYPE_CODE_PTR && type->code () != TYPE_CODE_REF) | |
6893 | break; | |
6894 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6895 | } |
14f9c5c9 | 6896 | |
76a01679 | 6897 | if (type == NULL |
78134374 SM |
6898 | || (type->code () != TYPE_CODE_STRUCT |
6899 | && type->code () != TYPE_CODE_UNION)) | |
14f9c5c9 | 6900 | { |
4c4b4cd2 | 6901 | if (noerr) |
dda83cd7 | 6902 | return NULL; |
99bbb428 | 6903 | |
3b4de39c PA |
6904 | error (_("Type %s is not a structure or union type"), |
6905 | type != NULL ? type_as_string (type).c_str () : _("(null)")); | |
14f9c5c9 AS |
6906 | } |
6907 | ||
6908 | type = to_static_fixed_type (type); | |
6909 | ||
1f704f76 | 6910 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 6911 | { |
0d5cff50 | 6912 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 | 6913 | struct type *t; |
d2e4a39e | 6914 | |
14f9c5c9 | 6915 | if (t_field_name == NULL) |
dda83cd7 | 6916 | continue; |
14f9c5c9 | 6917 | |
828d5846 | 6918 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 6919 | { |
828d5846 XR |
6920 | /* This is a field pointing us to the parent type of a tagged |
6921 | type. As hinted in this function's documentation, we give | |
6922 | preference to fields in the current record first, so what | |
6923 | we do here is just record the index of this field before | |
6924 | we skip it. If it turns out we couldn't find our field | |
6925 | in the current record, then we'll get back to it and search | |
6926 | inside it whether the field might exist in the parent. */ | |
6927 | ||
dda83cd7 SM |
6928 | parent_offset = i; |
6929 | continue; | |
6930 | } | |
828d5846 | 6931 | |
14f9c5c9 | 6932 | else if (field_name_match (t_field_name, name)) |
940da03e | 6933 | return type->field (i).type (); |
14f9c5c9 AS |
6934 | |
6935 | else if (ada_is_wrapper_field (type, i)) | |
dda83cd7 SM |
6936 | { |
6937 | t = ada_lookup_struct_elt_type (type->field (i).type (), name, | |
6938 | 0, 1); | |
6939 | if (t != NULL) | |
988f6b3d | 6940 | return t; |
dda83cd7 | 6941 | } |
14f9c5c9 AS |
6942 | |
6943 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 SM |
6944 | { |
6945 | int j; | |
6946 | struct type *field_type = ada_check_typedef (type->field (i).type ()); | |
4c4b4cd2 | 6947 | |
dda83cd7 SM |
6948 | for (j = field_type->num_fields () - 1; j >= 0; j -= 1) |
6949 | { | |
b1f33ddd | 6950 | /* FIXME pnh 2008/01/26: We check for a field that is |
dda83cd7 | 6951 | NOT wrapped in a struct, since the compiler sometimes |
b1f33ddd | 6952 | generates these for unchecked variant types. Revisit |
dda83cd7 | 6953 | if the compiler changes this practice. */ |
0d5cff50 | 6954 | const char *v_field_name = TYPE_FIELD_NAME (field_type, j); |
988f6b3d | 6955 | |
b1f33ddd JB |
6956 | if (v_field_name != NULL |
6957 | && field_name_match (v_field_name, name)) | |
940da03e | 6958 | t = field_type->field (j).type (); |
b1f33ddd | 6959 | else |
940da03e | 6960 | t = ada_lookup_struct_elt_type (field_type->field (j).type (), |
988f6b3d | 6961 | name, 0, 1); |
b1f33ddd | 6962 | |
dda83cd7 | 6963 | if (t != NULL) |
988f6b3d | 6964 | return t; |
dda83cd7 SM |
6965 | } |
6966 | } | |
14f9c5c9 AS |
6967 | |
6968 | } | |
6969 | ||
828d5846 XR |
6970 | /* Field not found so far. If this is a tagged type which |
6971 | has a parent, try finding that field in the parent now. */ | |
6972 | ||
6973 | if (parent_offset != -1) | |
6974 | { | |
dda83cd7 | 6975 | struct type *t; |
828d5846 | 6976 | |
dda83cd7 SM |
6977 | t = ada_lookup_struct_elt_type (type->field (parent_offset).type (), |
6978 | name, 0, 1); | |
6979 | if (t != NULL) | |
828d5846 XR |
6980 | return t; |
6981 | } | |
6982 | ||
14f9c5c9 | 6983 | BadName: |
d2e4a39e | 6984 | if (!noerr) |
14f9c5c9 | 6985 | { |
2b2798cc | 6986 | const char *name_str = name != NULL ? name : _("<null>"); |
99bbb428 PA |
6987 | |
6988 | error (_("Type %s has no component named %s"), | |
3b4de39c | 6989 | type_as_string (type).c_str (), name_str); |
14f9c5c9 AS |
6990 | } |
6991 | ||
6992 | return NULL; | |
6993 | } | |
6994 | ||
b1f33ddd JB |
6995 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
6996 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
6997 | represents an unchecked union (that is, the variant part of a | |
0963b4bd | 6998 | record that is named in an Unchecked_Union pragma). */ |
b1f33ddd JB |
6999 | |
7000 | static int | |
7001 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
7002 | { | |
a121b7c1 | 7003 | const char *discrim_name = ada_variant_discrim_name (var_type); |
5b4ee69b | 7004 | |
988f6b3d | 7005 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1) == NULL); |
b1f33ddd JB |
7006 | } |
7007 | ||
7008 | ||
14f9c5c9 | 7009 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
d8af9068 | 7010 | within OUTER, determine which variant clause (field number in VAR_TYPE, |
4c4b4cd2 | 7011 | numbering from 0) is applicable. Returns -1 if none are. */ |
14f9c5c9 | 7012 | |
d2e4a39e | 7013 | int |
d8af9068 | 7014 | ada_which_variant_applies (struct type *var_type, struct value *outer) |
14f9c5c9 AS |
7015 | { |
7016 | int others_clause; | |
7017 | int i; | |
a121b7c1 | 7018 | const char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 | 7019 | struct value *discrim; |
14f9c5c9 AS |
7020 | LONGEST discrim_val; |
7021 | ||
012370f6 TT |
7022 | /* Using plain value_from_contents_and_address here causes problems |
7023 | because we will end up trying to resolve a type that is currently | |
7024 | being constructed. */ | |
0c281816 JB |
7025 | discrim = ada_value_struct_elt (outer, discrim_name, 1); |
7026 | if (discrim == NULL) | |
14f9c5c9 | 7027 | return -1; |
0c281816 | 7028 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
7029 | |
7030 | others_clause = -1; | |
1f704f76 | 7031 | for (i = 0; i < var_type->num_fields (); i += 1) |
14f9c5c9 AS |
7032 | { |
7033 | if (ada_is_others_clause (var_type, i)) | |
dda83cd7 | 7034 | others_clause = i; |
14f9c5c9 | 7035 | else if (ada_in_variant (discrim_val, var_type, i)) |
dda83cd7 | 7036 | return i; |
14f9c5c9 AS |
7037 | } |
7038 | ||
7039 | return others_clause; | |
7040 | } | |
d2e4a39e | 7041 | \f |
14f9c5c9 AS |
7042 | |
7043 | ||
dda83cd7 | 7044 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
7045 | |
7046 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
7047 | (i.e., a size that is not statically recorded in the debugging | |
7048 | data) does not accurately reflect the size or layout of the value. | |
7049 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 7050 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
7051 | |
7052 | /* There is a subtle and tricky problem here. In general, we cannot | |
7053 | determine the size of dynamic records without its data. However, | |
7054 | the 'struct value' data structure, which GDB uses to represent | |
7055 | quantities in the inferior process (the target), requires the size | |
7056 | of the type at the time of its allocation in order to reserve space | |
7057 | for GDB's internal copy of the data. That's why the | |
7058 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 7059 | rather than struct value*s. |
14f9c5c9 AS |
7060 | |
7061 | However, GDB's internal history variables ($1, $2, etc.) are | |
7062 | struct value*s containing internal copies of the data that are not, in | |
7063 | general, the same as the data at their corresponding addresses in | |
7064 | the target. Fortunately, the types we give to these values are all | |
7065 | conventional, fixed-size types (as per the strategy described | |
7066 | above), so that we don't usually have to perform the | |
7067 | 'to_fixed_xxx_type' conversions to look at their values. | |
7068 | Unfortunately, there is one exception: if one of the internal | |
7069 | history variables is an array whose elements are unconstrained | |
7070 | records, then we will need to create distinct fixed types for each | |
7071 | element selected. */ | |
7072 | ||
7073 | /* The upshot of all of this is that many routines take a (type, host | |
7074 | address, target address) triple as arguments to represent a value. | |
7075 | The host address, if non-null, is supposed to contain an internal | |
7076 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 7077 | target at the target address. */ |
14f9c5c9 AS |
7078 | |
7079 | /* Assuming that VAL0 represents a pointer value, the result of | |
7080 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 7081 | dynamic-sized types. */ |
14f9c5c9 | 7082 | |
d2e4a39e AS |
7083 | struct value * |
7084 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 7085 | { |
c48db5ca | 7086 | struct value *val = value_ind (val0); |
5b4ee69b | 7087 | |
b50d69b5 JG |
7088 | if (ada_is_tagged_type (value_type (val), 0)) |
7089 | val = ada_tag_value_at_base_address (val); | |
7090 | ||
4c4b4cd2 | 7091 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
7092 | } |
7093 | ||
7094 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
7095 | qualifiers on VAL0. */ |
7096 | ||
d2e4a39e AS |
7097 | static struct value * |
7098 | ada_coerce_ref (struct value *val0) | |
7099 | { | |
78134374 | 7100 | if (value_type (val0)->code () == TYPE_CODE_REF) |
d2e4a39e AS |
7101 | { |
7102 | struct value *val = val0; | |
5b4ee69b | 7103 | |
994b9211 | 7104 | val = coerce_ref (val); |
b50d69b5 JG |
7105 | |
7106 | if (ada_is_tagged_type (value_type (val), 0)) | |
7107 | val = ada_tag_value_at_base_address (val); | |
7108 | ||
4c4b4cd2 | 7109 | return ada_to_fixed_value (val); |
d2e4a39e AS |
7110 | } |
7111 | else | |
14f9c5c9 AS |
7112 | return val0; |
7113 | } | |
7114 | ||
4c4b4cd2 | 7115 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
7116 | |
7117 | static unsigned int | |
ebf56fd3 | 7118 | field_alignment (struct type *type, int f) |
14f9c5c9 | 7119 | { |
d2e4a39e | 7120 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 7121 | int len; |
14f9c5c9 AS |
7122 | int align_offset; |
7123 | ||
64a1bf19 JB |
7124 | /* The field name should never be null, unless the debugging information |
7125 | is somehow malformed. In this case, we assume the field does not | |
7126 | require any alignment. */ | |
7127 | if (name == NULL) | |
7128 | return 1; | |
7129 | ||
7130 | len = strlen (name); | |
7131 | ||
4c4b4cd2 PH |
7132 | if (!isdigit (name[len - 1])) |
7133 | return 1; | |
14f9c5c9 | 7134 | |
d2e4a39e | 7135 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
7136 | align_offset = len - 2; |
7137 | else | |
7138 | align_offset = len - 1; | |
7139 | ||
61012eef | 7140 | if (align_offset < 7 || !startswith (name + align_offset - 6, "___XV")) |
14f9c5c9 AS |
7141 | return TARGET_CHAR_BIT; |
7142 | ||
4c4b4cd2 PH |
7143 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
7144 | } | |
7145 | ||
852dff6c | 7146 | /* Find a typedef or tag symbol named NAME. Ignores ambiguity. */ |
4c4b4cd2 | 7147 | |
852dff6c JB |
7148 | static struct symbol * |
7149 | ada_find_any_type_symbol (const char *name) | |
4c4b4cd2 PH |
7150 | { |
7151 | struct symbol *sym; | |
7152 | ||
7153 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
4186eb54 | 7154 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
4c4b4cd2 PH |
7155 | return sym; |
7156 | ||
4186eb54 KS |
7157 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); |
7158 | return sym; | |
14f9c5c9 AS |
7159 | } |
7160 | ||
dddfab26 UW |
7161 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
7162 | solely for types defined by debug info, it will not search the GDB | |
7163 | primitive types. */ | |
4c4b4cd2 | 7164 | |
852dff6c | 7165 | static struct type * |
ebf56fd3 | 7166 | ada_find_any_type (const char *name) |
14f9c5c9 | 7167 | { |
852dff6c | 7168 | struct symbol *sym = ada_find_any_type_symbol (name); |
14f9c5c9 | 7169 | |
14f9c5c9 | 7170 | if (sym != NULL) |
dddfab26 | 7171 | return SYMBOL_TYPE (sym); |
14f9c5c9 | 7172 | |
dddfab26 | 7173 | return NULL; |
14f9c5c9 AS |
7174 | } |
7175 | ||
739593e0 JB |
7176 | /* Given NAME_SYM and an associated BLOCK, find a "renaming" symbol |
7177 | associated with NAME_SYM's name. NAME_SYM may itself be a renaming | |
7178 | symbol, in which case it is returned. Otherwise, this looks for | |
7179 | symbols whose name is that of NAME_SYM suffixed with "___XR". | |
7180 | Return symbol if found, and NULL otherwise. */ | |
4c4b4cd2 | 7181 | |
c0e70c62 TT |
7182 | static bool |
7183 | ada_is_renaming_symbol (struct symbol *name_sym) | |
aeb5907d | 7184 | { |
987012b8 | 7185 | const char *name = name_sym->linkage_name (); |
c0e70c62 | 7186 | return strstr (name, "___XR") != NULL; |
4c4b4cd2 PH |
7187 | } |
7188 | ||
14f9c5c9 | 7189 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 7190 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 7191 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
7192 | otherwise return 0. */ |
7193 | ||
14f9c5c9 | 7194 | int |
d2e4a39e | 7195 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
7196 | { |
7197 | if (type1 == NULL) | |
7198 | return 1; | |
7199 | else if (type0 == NULL) | |
7200 | return 0; | |
78134374 | 7201 | else if (type1->code () == TYPE_CODE_VOID) |
14f9c5c9 | 7202 | return 1; |
78134374 | 7203 | else if (type0->code () == TYPE_CODE_VOID) |
14f9c5c9 | 7204 | return 0; |
7d93a1e0 | 7205 | else if (type1->name () == NULL && type0->name () != NULL) |
4c4b4cd2 | 7206 | return 1; |
ad82864c | 7207 | else if (ada_is_constrained_packed_array_type (type0)) |
14f9c5c9 | 7208 | return 1; |
4c4b4cd2 | 7209 | else if (ada_is_array_descriptor_type (type0) |
dda83cd7 | 7210 | && !ada_is_array_descriptor_type (type1)) |
14f9c5c9 | 7211 | return 1; |
aeb5907d JB |
7212 | else |
7213 | { | |
7d93a1e0 SM |
7214 | const char *type0_name = type0->name (); |
7215 | const char *type1_name = type1->name (); | |
aeb5907d JB |
7216 | |
7217 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
7218 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
7219 | return 1; | |
7220 | } | |
14f9c5c9 AS |
7221 | return 0; |
7222 | } | |
7223 | ||
e86ca25f TT |
7224 | /* The name of TYPE, which is its TYPE_NAME. Null if TYPE is |
7225 | null. */ | |
4c4b4cd2 | 7226 | |
0d5cff50 | 7227 | const char * |
d2e4a39e | 7228 | ada_type_name (struct type *type) |
14f9c5c9 | 7229 | { |
d2e4a39e | 7230 | if (type == NULL) |
14f9c5c9 | 7231 | return NULL; |
7d93a1e0 | 7232 | return type->name (); |
14f9c5c9 AS |
7233 | } |
7234 | ||
b4ba55a1 JB |
7235 | /* Search the list of "descriptive" types associated to TYPE for a type |
7236 | whose name is NAME. */ | |
7237 | ||
7238 | static struct type * | |
7239 | find_parallel_type_by_descriptive_type (struct type *type, const char *name) | |
7240 | { | |
931e5bc3 | 7241 | struct type *result, *tmp; |
b4ba55a1 | 7242 | |
c6044dd1 JB |
7243 | if (ada_ignore_descriptive_types_p) |
7244 | return NULL; | |
7245 | ||
b4ba55a1 JB |
7246 | /* If there no descriptive-type info, then there is no parallel type |
7247 | to be found. */ | |
7248 | if (!HAVE_GNAT_AUX_INFO (type)) | |
7249 | return NULL; | |
7250 | ||
7251 | result = TYPE_DESCRIPTIVE_TYPE (type); | |
7252 | while (result != NULL) | |
7253 | { | |
0d5cff50 | 7254 | const char *result_name = ada_type_name (result); |
b4ba55a1 JB |
7255 | |
7256 | if (result_name == NULL) | |
dda83cd7 SM |
7257 | { |
7258 | warning (_("unexpected null name on descriptive type")); | |
7259 | return NULL; | |
7260 | } | |
b4ba55a1 JB |
7261 | |
7262 | /* If the names match, stop. */ | |
7263 | if (strcmp (result_name, name) == 0) | |
7264 | break; | |
7265 | ||
7266 | /* Otherwise, look at the next item on the list, if any. */ | |
7267 | if (HAVE_GNAT_AUX_INFO (result)) | |
931e5bc3 JG |
7268 | tmp = TYPE_DESCRIPTIVE_TYPE (result); |
7269 | else | |
7270 | tmp = NULL; | |
7271 | ||
7272 | /* If not found either, try after having resolved the typedef. */ | |
7273 | if (tmp != NULL) | |
7274 | result = tmp; | |
b4ba55a1 | 7275 | else |
931e5bc3 | 7276 | { |
f168693b | 7277 | result = check_typedef (result); |
931e5bc3 JG |
7278 | if (HAVE_GNAT_AUX_INFO (result)) |
7279 | result = TYPE_DESCRIPTIVE_TYPE (result); | |
7280 | else | |
7281 | result = NULL; | |
7282 | } | |
b4ba55a1 JB |
7283 | } |
7284 | ||
7285 | /* If we didn't find a match, see whether this is a packed array. With | |
7286 | older compilers, the descriptive type information is either absent or | |
7287 | irrelevant when it comes to packed arrays so the above lookup fails. | |
7288 | Fall back to using a parallel lookup by name in this case. */ | |
12ab9e09 | 7289 | if (result == NULL && ada_is_constrained_packed_array_type (type)) |
b4ba55a1 JB |
7290 | return ada_find_any_type (name); |
7291 | ||
7292 | return result; | |
7293 | } | |
7294 | ||
7295 | /* Find a parallel type to TYPE with the specified NAME, using the | |
7296 | descriptive type taken from the debugging information, if available, | |
7297 | and otherwise using the (slower) name-based method. */ | |
7298 | ||
7299 | static struct type * | |
7300 | ada_find_parallel_type_with_name (struct type *type, const char *name) | |
7301 | { | |
7302 | struct type *result = NULL; | |
7303 | ||
7304 | if (HAVE_GNAT_AUX_INFO (type)) | |
7305 | result = find_parallel_type_by_descriptive_type (type, name); | |
7306 | else | |
7307 | result = ada_find_any_type (name); | |
7308 | ||
7309 | return result; | |
7310 | } | |
7311 | ||
7312 | /* Same as above, but specify the name of the parallel type by appending | |
4c4b4cd2 | 7313 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 7314 | |
d2e4a39e | 7315 | struct type * |
ebf56fd3 | 7316 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 7317 | { |
0d5cff50 | 7318 | char *name; |
fe978cb0 | 7319 | const char *type_name = ada_type_name (type); |
14f9c5c9 | 7320 | int len; |
d2e4a39e | 7321 | |
fe978cb0 | 7322 | if (type_name == NULL) |
14f9c5c9 AS |
7323 | return NULL; |
7324 | ||
fe978cb0 | 7325 | len = strlen (type_name); |
14f9c5c9 | 7326 | |
b4ba55a1 | 7327 | name = (char *) alloca (len + strlen (suffix) + 1); |
14f9c5c9 | 7328 | |
fe978cb0 | 7329 | strcpy (name, type_name); |
14f9c5c9 AS |
7330 | strcpy (name + len, suffix); |
7331 | ||
b4ba55a1 | 7332 | return ada_find_parallel_type_with_name (type, name); |
14f9c5c9 AS |
7333 | } |
7334 | ||
14f9c5c9 | 7335 | /* If TYPE is a variable-size record type, return the corresponding template |
4c4b4cd2 | 7336 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 7337 | |
d2e4a39e AS |
7338 | static struct type * |
7339 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 7340 | { |
61ee279c | 7341 | type = ada_check_typedef (type); |
14f9c5c9 | 7342 | |
78134374 | 7343 | if (type == NULL || type->code () != TYPE_CODE_STRUCT |
d2e4a39e | 7344 | || ada_type_name (type) == NULL) |
14f9c5c9 | 7345 | return NULL; |
d2e4a39e | 7346 | else |
14f9c5c9 AS |
7347 | { |
7348 | int len = strlen (ada_type_name (type)); | |
5b4ee69b | 7349 | |
4c4b4cd2 | 7350 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
dda83cd7 | 7351 | return type; |
14f9c5c9 | 7352 | else |
dda83cd7 | 7353 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
7354 | } |
7355 | } | |
7356 | ||
7357 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 7358 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 7359 | |
d2e4a39e AS |
7360 | static int |
7361 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
7362 | { |
7363 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
5b4ee69b | 7364 | |
d2e4a39e | 7365 | return name != NULL |
940da03e | 7366 | && templ_type->field (field_num).type ()->code () == TYPE_CODE_PTR |
14f9c5c9 AS |
7367 | && strstr (name, "___XVL") != NULL; |
7368 | } | |
7369 | ||
4c4b4cd2 PH |
7370 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
7371 | represent a variant record type. */ | |
14f9c5c9 | 7372 | |
d2e4a39e | 7373 | static int |
4c4b4cd2 | 7374 | variant_field_index (struct type *type) |
14f9c5c9 AS |
7375 | { |
7376 | int f; | |
7377 | ||
78134374 | 7378 | if (type == NULL || type->code () != TYPE_CODE_STRUCT) |
4c4b4cd2 PH |
7379 | return -1; |
7380 | ||
1f704f76 | 7381 | for (f = 0; f < type->num_fields (); f += 1) |
4c4b4cd2 PH |
7382 | { |
7383 | if (ada_is_variant_part (type, f)) | |
dda83cd7 | 7384 | return f; |
4c4b4cd2 PH |
7385 | } |
7386 | return -1; | |
14f9c5c9 AS |
7387 | } |
7388 | ||
4c4b4cd2 PH |
7389 | /* A record type with no fields. */ |
7390 | ||
d2e4a39e | 7391 | static struct type * |
fe978cb0 | 7392 | empty_record (struct type *templ) |
14f9c5c9 | 7393 | { |
fe978cb0 | 7394 | struct type *type = alloc_type_copy (templ); |
5b4ee69b | 7395 | |
67607e24 | 7396 | type->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 7397 | INIT_NONE_SPECIFIC (type); |
d0e39ea2 | 7398 | type->set_name ("<empty>"); |
14f9c5c9 AS |
7399 | TYPE_LENGTH (type) = 0; |
7400 | return type; | |
7401 | } | |
7402 | ||
7403 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
7404 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
7405 | the beginning of this section) VAL according to GNAT conventions. | |
7406 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 7407 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
7408 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
7409 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 7410 | of the variant. |
14f9c5c9 | 7411 | |
4c4b4cd2 PH |
7412 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
7413 | length are not statically known are discarded. As a consequence, | |
7414 | VALADDR, ADDRESS and DVAL0 are ignored. | |
7415 | ||
7416 | NOTE: Limitations: For now, we assume that dynamic fields and | |
7417 | variants occupy whole numbers of bytes. However, they need not be | |
7418 | byte-aligned. */ | |
7419 | ||
7420 | struct type * | |
10a2c479 | 7421 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 7422 | const gdb_byte *valaddr, |
dda83cd7 SM |
7423 | CORE_ADDR address, struct value *dval0, |
7424 | int keep_dynamic_fields) | |
14f9c5c9 | 7425 | { |
d2e4a39e AS |
7426 | struct value *mark = value_mark (); |
7427 | struct value *dval; | |
7428 | struct type *rtype; | |
14f9c5c9 | 7429 | int nfields, bit_len; |
4c4b4cd2 | 7430 | int variant_field; |
14f9c5c9 | 7431 | long off; |
d94e4f4f | 7432 | int fld_bit_len; |
14f9c5c9 AS |
7433 | int f; |
7434 | ||
4c4b4cd2 PH |
7435 | /* Compute the number of fields in this record type that are going |
7436 | to be processed: unless keep_dynamic_fields, this includes only | |
7437 | fields whose position and length are static will be processed. */ | |
7438 | if (keep_dynamic_fields) | |
1f704f76 | 7439 | nfields = type->num_fields (); |
4c4b4cd2 PH |
7440 | else |
7441 | { | |
7442 | nfields = 0; | |
1f704f76 | 7443 | while (nfields < type->num_fields () |
dda83cd7 SM |
7444 | && !ada_is_variant_part (type, nfields) |
7445 | && !is_dynamic_field (type, nfields)) | |
7446 | nfields++; | |
4c4b4cd2 PH |
7447 | } |
7448 | ||
e9bb382b | 7449 | rtype = alloc_type_copy (type); |
67607e24 | 7450 | rtype->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 7451 | INIT_NONE_SPECIFIC (rtype); |
5e33d5f4 | 7452 | rtype->set_num_fields (nfields); |
3cabb6b0 SM |
7453 | rtype->set_fields |
7454 | ((struct field *) TYPE_ZALLOC (rtype, nfields * sizeof (struct field))); | |
d0e39ea2 | 7455 | rtype->set_name (ada_type_name (type)); |
9cdd0d12 | 7456 | rtype->set_is_fixed_instance (true); |
14f9c5c9 | 7457 | |
d2e4a39e AS |
7458 | off = 0; |
7459 | bit_len = 0; | |
4c4b4cd2 PH |
7460 | variant_field = -1; |
7461 | ||
14f9c5c9 AS |
7462 | for (f = 0; f < nfields; f += 1) |
7463 | { | |
a89febbd | 7464 | off = align_up (off, field_alignment (type, f)) |
6c038f32 | 7465 | + TYPE_FIELD_BITPOS (type, f); |
ceacbf6e | 7466 | SET_FIELD_BITPOS (rtype->field (f), off); |
d2e4a39e | 7467 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 7468 | |
d2e4a39e | 7469 | if (ada_is_variant_part (type, f)) |
dda83cd7 SM |
7470 | { |
7471 | variant_field = f; | |
7472 | fld_bit_len = 0; | |
7473 | } | |
14f9c5c9 | 7474 | else if (is_dynamic_field (type, f)) |
dda83cd7 | 7475 | { |
284614f0 JB |
7476 | const gdb_byte *field_valaddr = valaddr; |
7477 | CORE_ADDR field_address = address; | |
7478 | struct type *field_type = | |
940da03e | 7479 | TYPE_TARGET_TYPE (type->field (f).type ()); |
284614f0 | 7480 | |
dda83cd7 | 7481 | if (dval0 == NULL) |
b5304971 JG |
7482 | { |
7483 | /* rtype's length is computed based on the run-time | |
7484 | value of discriminants. If the discriminants are not | |
7485 | initialized, the type size may be completely bogus and | |
0963b4bd | 7486 | GDB may fail to allocate a value for it. So check the |
b5304971 | 7487 | size first before creating the value. */ |
c1b5a1a6 | 7488 | ada_ensure_varsize_limit (rtype); |
012370f6 TT |
7489 | /* Using plain value_from_contents_and_address here |
7490 | causes problems because we will end up trying to | |
7491 | resolve a type that is currently being | |
7492 | constructed. */ | |
7493 | dval = value_from_contents_and_address_unresolved (rtype, | |
7494 | valaddr, | |
7495 | address); | |
9f1f738a | 7496 | rtype = value_type (dval); |
b5304971 | 7497 | } |
dda83cd7 SM |
7498 | else |
7499 | dval = dval0; | |
4c4b4cd2 | 7500 | |
284614f0 JB |
7501 | /* If the type referenced by this field is an aligner type, we need |
7502 | to unwrap that aligner type, because its size might not be set. | |
7503 | Keeping the aligner type would cause us to compute the wrong | |
7504 | size for this field, impacting the offset of the all the fields | |
7505 | that follow this one. */ | |
7506 | if (ada_is_aligner_type (field_type)) | |
7507 | { | |
7508 | long field_offset = TYPE_FIELD_BITPOS (field_type, f); | |
7509 | ||
7510 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
7511 | field_address = cond_offset_target (field_address, field_offset); | |
7512 | field_type = ada_aligned_type (field_type); | |
7513 | } | |
7514 | ||
7515 | field_valaddr = cond_offset_host (field_valaddr, | |
7516 | off / TARGET_CHAR_BIT); | |
7517 | field_address = cond_offset_target (field_address, | |
7518 | off / TARGET_CHAR_BIT); | |
7519 | ||
7520 | /* Get the fixed type of the field. Note that, in this case, | |
7521 | we do not want to get the real type out of the tag: if | |
7522 | the current field is the parent part of a tagged record, | |
7523 | we will get the tag of the object. Clearly wrong: the real | |
7524 | type of the parent is not the real type of the child. We | |
7525 | would end up in an infinite loop. */ | |
7526 | field_type = ada_get_base_type (field_type); | |
7527 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
7528 | field_address, dval, 0); | |
27f2a97b JB |
7529 | /* If the field size is already larger than the maximum |
7530 | object size, then the record itself will necessarily | |
7531 | be larger than the maximum object size. We need to make | |
7532 | this check now, because the size might be so ridiculously | |
7533 | large (due to an uninitialized variable in the inferior) | |
7534 | that it would cause an overflow when adding it to the | |
7535 | record size. */ | |
c1b5a1a6 | 7536 | ada_ensure_varsize_limit (field_type); |
284614f0 | 7537 | |
5d14b6e5 | 7538 | rtype->field (f).set_type (field_type); |
dda83cd7 | 7539 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
27f2a97b JB |
7540 | /* The multiplication can potentially overflow. But because |
7541 | the field length has been size-checked just above, and | |
7542 | assuming that the maximum size is a reasonable value, | |
7543 | an overflow should not happen in practice. So rather than | |
7544 | adding overflow recovery code to this already complex code, | |
7545 | we just assume that it's not going to happen. */ | |
dda83cd7 SM |
7546 | fld_bit_len = |
7547 | TYPE_LENGTH (rtype->field (f).type ()) * TARGET_CHAR_BIT; | |
7548 | } | |
14f9c5c9 | 7549 | else |
dda83cd7 | 7550 | { |
5ded5331 JB |
7551 | /* Note: If this field's type is a typedef, it is important |
7552 | to preserve the typedef layer. | |
7553 | ||
7554 | Otherwise, we might be transforming a typedef to a fat | |
7555 | pointer (encoding a pointer to an unconstrained array), | |
7556 | into a basic fat pointer (encoding an unconstrained | |
7557 | array). As both types are implemented using the same | |
7558 | structure, the typedef is the only clue which allows us | |
7559 | to distinguish between the two options. Stripping it | |
7560 | would prevent us from printing this field appropriately. */ | |
dda83cd7 SM |
7561 | rtype->field (f).set_type (type->field (f).type ()); |
7562 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
7563 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
7564 | fld_bit_len = | |
7565 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
7566 | else | |
5ded5331 | 7567 | { |
940da03e | 7568 | struct type *field_type = type->field (f).type (); |
5ded5331 JB |
7569 | |
7570 | /* We need to be careful of typedefs when computing | |
7571 | the length of our field. If this is a typedef, | |
7572 | get the length of the target type, not the length | |
7573 | of the typedef. */ | |
78134374 | 7574 | if (field_type->code () == TYPE_CODE_TYPEDEF) |
5ded5331 JB |
7575 | field_type = ada_typedef_target_type (field_type); |
7576 | ||
dda83cd7 SM |
7577 | fld_bit_len = |
7578 | TYPE_LENGTH (ada_check_typedef (field_type)) * TARGET_CHAR_BIT; | |
5ded5331 | 7579 | } |
dda83cd7 | 7580 | } |
14f9c5c9 | 7581 | if (off + fld_bit_len > bit_len) |
dda83cd7 | 7582 | bit_len = off + fld_bit_len; |
d94e4f4f | 7583 | off += fld_bit_len; |
4c4b4cd2 | 7584 | TYPE_LENGTH (rtype) = |
dda83cd7 | 7585 | align_up (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; |
14f9c5c9 | 7586 | } |
4c4b4cd2 PH |
7587 | |
7588 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 7589 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
7590 | the record. This can happen in the presence of representation |
7591 | clauses. */ | |
7592 | if (variant_field >= 0) | |
7593 | { | |
7594 | struct type *branch_type; | |
7595 | ||
7596 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
7597 | ||
7598 | if (dval0 == NULL) | |
9f1f738a | 7599 | { |
012370f6 TT |
7600 | /* Using plain value_from_contents_and_address here causes |
7601 | problems because we will end up trying to resolve a type | |
7602 | that is currently being constructed. */ | |
7603 | dval = value_from_contents_and_address_unresolved (rtype, valaddr, | |
7604 | address); | |
9f1f738a SA |
7605 | rtype = value_type (dval); |
7606 | } | |
4c4b4cd2 | 7607 | else |
dda83cd7 | 7608 | dval = dval0; |
4c4b4cd2 PH |
7609 | |
7610 | branch_type = | |
dda83cd7 SM |
7611 | to_fixed_variant_branch_type |
7612 | (type->field (variant_field).type (), | |
7613 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
7614 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
4c4b4cd2 | 7615 | if (branch_type == NULL) |
dda83cd7 SM |
7616 | { |
7617 | for (f = variant_field + 1; f < rtype->num_fields (); f += 1) | |
7618 | rtype->field (f - 1) = rtype->field (f); | |
5e33d5f4 | 7619 | rtype->set_num_fields (rtype->num_fields () - 1); |
dda83cd7 | 7620 | } |
4c4b4cd2 | 7621 | else |
dda83cd7 SM |
7622 | { |
7623 | rtype->field (variant_field).set_type (branch_type); | |
7624 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7625 | fld_bit_len = | |
7626 | TYPE_LENGTH (rtype->field (variant_field).type ()) * | |
7627 | TARGET_CHAR_BIT; | |
7628 | if (off + fld_bit_len > bit_len) | |
7629 | bit_len = off + fld_bit_len; | |
7630 | TYPE_LENGTH (rtype) = | |
7631 | align_up (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
7632 | } | |
4c4b4cd2 PH |
7633 | } |
7634 | ||
714e53ab PH |
7635 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
7636 | should contain the alignment of that record, which should be a strictly | |
7637 | positive value. If null or negative, then something is wrong, most | |
7638 | probably in the debug info. In that case, we don't round up the size | |
0963b4bd | 7639 | of the resulting type. If this record is not part of another structure, |
714e53ab PH |
7640 | the current RTYPE length might be good enough for our purposes. */ |
7641 | if (TYPE_LENGTH (type) <= 0) | |
7642 | { | |
7d93a1e0 | 7643 | if (rtype->name ()) |
cc1defb1 | 7644 | warning (_("Invalid type size for `%s' detected: %s."), |
7d93a1e0 | 7645 | rtype->name (), pulongest (TYPE_LENGTH (type))); |
323e0a4a | 7646 | else |
cc1defb1 KS |
7647 | warning (_("Invalid type size for <unnamed> detected: %s."), |
7648 | pulongest (TYPE_LENGTH (type))); | |
714e53ab PH |
7649 | } |
7650 | else | |
7651 | { | |
a89febbd TT |
7652 | TYPE_LENGTH (rtype) = align_up (TYPE_LENGTH (rtype), |
7653 | TYPE_LENGTH (type)); | |
714e53ab | 7654 | } |
14f9c5c9 AS |
7655 | |
7656 | value_free_to_mark (mark); | |
d2e4a39e | 7657 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 7658 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7659 | return rtype; |
7660 | } | |
7661 | ||
4c4b4cd2 PH |
7662 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
7663 | of 1. */ | |
14f9c5c9 | 7664 | |
d2e4a39e | 7665 | static struct type * |
fc1a4b47 | 7666 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
dda83cd7 | 7667 | CORE_ADDR address, struct value *dval0) |
4c4b4cd2 PH |
7668 | { |
7669 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
dda83cd7 | 7670 | address, dval0, 1); |
4c4b4cd2 PH |
7671 | } |
7672 | ||
7673 | /* An ordinary record type in which ___XVL-convention fields and | |
7674 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
7675 | static approximations, containing all possible fields. Uses | |
7676 | no runtime values. Useless for use in values, but that's OK, | |
7677 | since the results are used only for type determinations. Works on both | |
7678 | structs and unions. Representation note: to save space, we memorize | |
7679 | the result of this function in the TYPE_TARGET_TYPE of the | |
7680 | template type. */ | |
7681 | ||
7682 | static struct type * | |
7683 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
7684 | { |
7685 | struct type *type; | |
7686 | int nfields; | |
7687 | int f; | |
7688 | ||
9e195661 | 7689 | /* No need no do anything if the input type is already fixed. */ |
22c4c60c | 7690 | if (type0->is_fixed_instance ()) |
9e195661 PMR |
7691 | return type0; |
7692 | ||
7693 | /* Likewise if we already have computed the static approximation. */ | |
4c4b4cd2 PH |
7694 | if (TYPE_TARGET_TYPE (type0) != NULL) |
7695 | return TYPE_TARGET_TYPE (type0); | |
7696 | ||
9e195661 | 7697 | /* Don't clone TYPE0 until we are sure we are going to need a copy. */ |
4c4b4cd2 | 7698 | type = type0; |
1f704f76 | 7699 | nfields = type0->num_fields (); |
9e195661 PMR |
7700 | |
7701 | /* Whether or not we cloned TYPE0, cache the result so that we don't do | |
7702 | recompute all over next time. */ | |
7703 | TYPE_TARGET_TYPE (type0) = type; | |
14f9c5c9 AS |
7704 | |
7705 | for (f = 0; f < nfields; f += 1) | |
7706 | { | |
940da03e | 7707 | struct type *field_type = type0->field (f).type (); |
4c4b4cd2 | 7708 | struct type *new_type; |
14f9c5c9 | 7709 | |
4c4b4cd2 | 7710 | if (is_dynamic_field (type0, f)) |
460efde1 JB |
7711 | { |
7712 | field_type = ada_check_typedef (field_type); | |
dda83cd7 | 7713 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); |
460efde1 | 7714 | } |
14f9c5c9 | 7715 | else |
dda83cd7 | 7716 | new_type = static_unwrap_type (field_type); |
9e195661 PMR |
7717 | |
7718 | if (new_type != field_type) | |
7719 | { | |
7720 | /* Clone TYPE0 only the first time we get a new field type. */ | |
7721 | if (type == type0) | |
7722 | { | |
7723 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); | |
78134374 | 7724 | type->set_code (type0->code ()); |
8ecb59f8 | 7725 | INIT_NONE_SPECIFIC (type); |
5e33d5f4 | 7726 | type->set_num_fields (nfields); |
3cabb6b0 SM |
7727 | |
7728 | field *fields = | |
7729 | ((struct field *) | |
7730 | TYPE_ALLOC (type, nfields * sizeof (struct field))); | |
80fc5e77 | 7731 | memcpy (fields, type0->fields (), |
9e195661 | 7732 | sizeof (struct field) * nfields); |
3cabb6b0 SM |
7733 | type->set_fields (fields); |
7734 | ||
d0e39ea2 | 7735 | type->set_name (ada_type_name (type0)); |
9cdd0d12 | 7736 | type->set_is_fixed_instance (true); |
9e195661 PMR |
7737 | TYPE_LENGTH (type) = 0; |
7738 | } | |
5d14b6e5 | 7739 | type->field (f).set_type (new_type); |
9e195661 PMR |
7740 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); |
7741 | } | |
14f9c5c9 | 7742 | } |
9e195661 | 7743 | |
14f9c5c9 AS |
7744 | return type; |
7745 | } | |
7746 | ||
4c4b4cd2 | 7747 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
7748 | whose address in memory is ADDRESS, returns a revision of TYPE, |
7749 | which should be a non-dynamic-sized record, in which the variant | |
7750 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
7751 | for discriminant values in DVAL0, which can be NULL if the record |
7752 | contains the necessary discriminant values. */ | |
7753 | ||
d2e4a39e | 7754 | static struct type * |
fc1a4b47 | 7755 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
dda83cd7 | 7756 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 7757 | { |
d2e4a39e | 7758 | struct value *mark = value_mark (); |
4c4b4cd2 | 7759 | struct value *dval; |
d2e4a39e | 7760 | struct type *rtype; |
14f9c5c9 | 7761 | struct type *branch_type; |
1f704f76 | 7762 | int nfields = type->num_fields (); |
4c4b4cd2 | 7763 | int variant_field = variant_field_index (type); |
14f9c5c9 | 7764 | |
4c4b4cd2 | 7765 | if (variant_field == -1) |
14f9c5c9 AS |
7766 | return type; |
7767 | ||
4c4b4cd2 | 7768 | if (dval0 == NULL) |
9f1f738a SA |
7769 | { |
7770 | dval = value_from_contents_and_address (type, valaddr, address); | |
7771 | type = value_type (dval); | |
7772 | } | |
4c4b4cd2 PH |
7773 | else |
7774 | dval = dval0; | |
7775 | ||
e9bb382b | 7776 | rtype = alloc_type_copy (type); |
67607e24 | 7777 | rtype->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 7778 | INIT_NONE_SPECIFIC (rtype); |
5e33d5f4 | 7779 | rtype->set_num_fields (nfields); |
3cabb6b0 SM |
7780 | |
7781 | field *fields = | |
d2e4a39e | 7782 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
80fc5e77 | 7783 | memcpy (fields, type->fields (), sizeof (struct field) * nfields); |
3cabb6b0 SM |
7784 | rtype->set_fields (fields); |
7785 | ||
d0e39ea2 | 7786 | rtype->set_name (ada_type_name (type)); |
9cdd0d12 | 7787 | rtype->set_is_fixed_instance (true); |
14f9c5c9 AS |
7788 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
7789 | ||
4c4b4cd2 | 7790 | branch_type = to_fixed_variant_branch_type |
940da03e | 7791 | (type->field (variant_field).type (), |
d2e4a39e | 7792 | cond_offset_host (valaddr, |
dda83cd7 SM |
7793 | TYPE_FIELD_BITPOS (type, variant_field) |
7794 | / TARGET_CHAR_BIT), | |
d2e4a39e | 7795 | cond_offset_target (address, |
dda83cd7 SM |
7796 | TYPE_FIELD_BITPOS (type, variant_field) |
7797 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 7798 | if (branch_type == NULL) |
14f9c5c9 | 7799 | { |
4c4b4cd2 | 7800 | int f; |
5b4ee69b | 7801 | |
4c4b4cd2 | 7802 | for (f = variant_field + 1; f < nfields; f += 1) |
dda83cd7 | 7803 | rtype->field (f - 1) = rtype->field (f); |
5e33d5f4 | 7804 | rtype->set_num_fields (rtype->num_fields () - 1); |
14f9c5c9 AS |
7805 | } |
7806 | else | |
7807 | { | |
5d14b6e5 | 7808 | rtype->field (variant_field).set_type (branch_type); |
4c4b4cd2 PH |
7809 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; |
7810 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 7811 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 7812 | } |
940da03e | 7813 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (type->field (variant_field).type ()); |
d2e4a39e | 7814 | |
4c4b4cd2 | 7815 | value_free_to_mark (mark); |
14f9c5c9 AS |
7816 | return rtype; |
7817 | } | |
7818 | ||
7819 | /* An ordinary record type (with fixed-length fields) that describes | |
7820 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
7821 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
7822 | should be in DVAL, a record value; it may be NULL if the object |
7823 | at ADDR itself contains any necessary discriminant values. | |
7824 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
7825 | values from the record are needed. Except in the case that DVAL, | |
7826 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
7827 | unchecked) is replaced by a particular branch of the variant. | |
7828 | ||
7829 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
7830 | is questionable and may be removed. It can arise during the | |
7831 | processing of an unconstrained-array-of-record type where all the | |
7832 | variant branches have exactly the same size. This is because in | |
7833 | such cases, the compiler does not bother to use the XVS convention | |
7834 | when encoding the record. I am currently dubious of this | |
7835 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 7836 | |
d2e4a39e | 7837 | static struct type * |
fc1a4b47 | 7838 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
dda83cd7 | 7839 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 7840 | { |
d2e4a39e | 7841 | struct type *templ_type; |
14f9c5c9 | 7842 | |
22c4c60c | 7843 | if (type0->is_fixed_instance ()) |
4c4b4cd2 PH |
7844 | return type0; |
7845 | ||
d2e4a39e | 7846 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
7847 | |
7848 | if (templ_type != NULL) | |
7849 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
7850 | else if (variant_field_index (type0) >= 0) |
7851 | { | |
7852 | if (dval == NULL && valaddr == NULL && address == 0) | |
dda83cd7 | 7853 | return type0; |
4c4b4cd2 | 7854 | return to_record_with_fixed_variant_part (type0, valaddr, address, |
dda83cd7 | 7855 | dval); |
4c4b4cd2 | 7856 | } |
14f9c5c9 AS |
7857 | else |
7858 | { | |
9cdd0d12 | 7859 | type0->set_is_fixed_instance (true); |
14f9c5c9 AS |
7860 | return type0; |
7861 | } | |
7862 | ||
7863 | } | |
7864 | ||
7865 | /* An ordinary record type (with fixed-length fields) that describes | |
7866 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
7867 | union type. Any necessary discriminants' values should be in DVAL, | |
7868 | a record value. That is, this routine selects the appropriate | |
7869 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd | 7870 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
0963b4bd | 7871 | it represents a variant subject to a pragma Unchecked_Union. */ |
14f9c5c9 | 7872 | |
d2e4a39e | 7873 | static struct type * |
fc1a4b47 | 7874 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
dda83cd7 | 7875 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7876 | { |
7877 | int which; | |
d2e4a39e AS |
7878 | struct type *templ_type; |
7879 | struct type *var_type; | |
14f9c5c9 | 7880 | |
78134374 | 7881 | if (var_type0->code () == TYPE_CODE_PTR) |
14f9c5c9 | 7882 | var_type = TYPE_TARGET_TYPE (var_type0); |
d2e4a39e | 7883 | else |
14f9c5c9 AS |
7884 | var_type = var_type0; |
7885 | ||
7886 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7887 | ||
7888 | if (templ_type != NULL) | |
7889 | var_type = templ_type; | |
7890 | ||
b1f33ddd JB |
7891 | if (is_unchecked_variant (var_type, value_type (dval))) |
7892 | return var_type0; | |
d8af9068 | 7893 | which = ada_which_variant_applies (var_type, dval); |
14f9c5c9 AS |
7894 | |
7895 | if (which < 0) | |
e9bb382b | 7896 | return empty_record (var_type); |
14f9c5c9 | 7897 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 7898 | return to_fixed_record_type |
940da03e | 7899 | (TYPE_TARGET_TYPE (var_type->field (which).type ()), |
d2e4a39e | 7900 | valaddr, address, dval); |
940da03e | 7901 | else if (variant_field_index (var_type->field (which).type ()) >= 0) |
d2e4a39e AS |
7902 | return |
7903 | to_fixed_record_type | |
940da03e | 7904 | (var_type->field (which).type (), valaddr, address, dval); |
14f9c5c9 | 7905 | else |
940da03e | 7906 | return var_type->field (which).type (); |
14f9c5c9 AS |
7907 | } |
7908 | ||
8908fca5 JB |
7909 | /* Assuming RANGE_TYPE is a TYPE_CODE_RANGE, return nonzero if |
7910 | ENCODING_TYPE, a type following the GNAT conventions for discrete | |
7911 | type encodings, only carries redundant information. */ | |
7912 | ||
7913 | static int | |
7914 | ada_is_redundant_range_encoding (struct type *range_type, | |
7915 | struct type *encoding_type) | |
7916 | { | |
108d56a4 | 7917 | const char *bounds_str; |
8908fca5 JB |
7918 | int n; |
7919 | LONGEST lo, hi; | |
7920 | ||
78134374 | 7921 | gdb_assert (range_type->code () == TYPE_CODE_RANGE); |
8908fca5 | 7922 | |
78134374 SM |
7923 | if (get_base_type (range_type)->code () |
7924 | != get_base_type (encoding_type)->code ()) | |
005e2509 JB |
7925 | { |
7926 | /* The compiler probably used a simple base type to describe | |
7927 | the range type instead of the range's actual base type, | |
7928 | expecting us to get the real base type from the encoding | |
7929 | anyway. In this situation, the encoding cannot be ignored | |
7930 | as redundant. */ | |
7931 | return 0; | |
7932 | } | |
7933 | ||
8908fca5 JB |
7934 | if (is_dynamic_type (range_type)) |
7935 | return 0; | |
7936 | ||
7d93a1e0 | 7937 | if (encoding_type->name () == NULL) |
8908fca5 JB |
7938 | return 0; |
7939 | ||
7d93a1e0 | 7940 | bounds_str = strstr (encoding_type->name (), "___XDLU_"); |
8908fca5 JB |
7941 | if (bounds_str == NULL) |
7942 | return 0; | |
7943 | ||
7944 | n = 8; /* Skip "___XDLU_". */ | |
7945 | if (!ada_scan_number (bounds_str, n, &lo, &n)) | |
7946 | return 0; | |
5537ddd0 | 7947 | if (range_type->bounds ()->low.const_val () != lo) |
8908fca5 JB |
7948 | return 0; |
7949 | ||
7950 | n += 2; /* Skip the "__" separator between the two bounds. */ | |
7951 | if (!ada_scan_number (bounds_str, n, &hi, &n)) | |
7952 | return 0; | |
5537ddd0 | 7953 | if (range_type->bounds ()->high.const_val () != hi) |
8908fca5 JB |
7954 | return 0; |
7955 | ||
7956 | return 1; | |
7957 | } | |
7958 | ||
7959 | /* Given the array type ARRAY_TYPE, return nonzero if DESC_TYPE, | |
7960 | a type following the GNAT encoding for describing array type | |
7961 | indices, only carries redundant information. */ | |
7962 | ||
7963 | static int | |
7964 | ada_is_redundant_index_type_desc (struct type *array_type, | |
7965 | struct type *desc_type) | |
7966 | { | |
7967 | struct type *this_layer = check_typedef (array_type); | |
7968 | int i; | |
7969 | ||
1f704f76 | 7970 | for (i = 0; i < desc_type->num_fields (); i++) |
8908fca5 | 7971 | { |
3d967001 | 7972 | if (!ada_is_redundant_range_encoding (this_layer->index_type (), |
940da03e | 7973 | desc_type->field (i).type ())) |
8908fca5 JB |
7974 | return 0; |
7975 | this_layer = check_typedef (TYPE_TARGET_TYPE (this_layer)); | |
7976 | } | |
7977 | ||
7978 | return 1; | |
7979 | } | |
7980 | ||
14f9c5c9 AS |
7981 | /* Assuming that TYPE0 is an array type describing the type of a value |
7982 | at ADDR, and that DVAL describes a record containing any | |
7983 | discriminants used in TYPE0, returns a type for the value that | |
7984 | contains no dynamic components (that is, no components whose sizes | |
7985 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7986 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7987 | varsize_limit. */ |
14f9c5c9 | 7988 | |
d2e4a39e AS |
7989 | static struct type * |
7990 | to_fixed_array_type (struct type *type0, struct value *dval, | |
dda83cd7 | 7991 | int ignore_too_big) |
14f9c5c9 | 7992 | { |
d2e4a39e AS |
7993 | struct type *index_type_desc; |
7994 | struct type *result; | |
ad82864c | 7995 | int constrained_packed_array_p; |
931e5bc3 | 7996 | static const char *xa_suffix = "___XA"; |
14f9c5c9 | 7997 | |
b0dd7688 | 7998 | type0 = ada_check_typedef (type0); |
22c4c60c | 7999 | if (type0->is_fixed_instance ()) |
4c4b4cd2 | 8000 | return type0; |
14f9c5c9 | 8001 | |
ad82864c JB |
8002 | constrained_packed_array_p = ada_is_constrained_packed_array_type (type0); |
8003 | if (constrained_packed_array_p) | |
75fd6a26 TT |
8004 | { |
8005 | type0 = decode_constrained_packed_array_type (type0); | |
8006 | if (type0 == nullptr) | |
8007 | error (_("could not decode constrained packed array type")); | |
8008 | } | |
284614f0 | 8009 | |
931e5bc3 JG |
8010 | index_type_desc = ada_find_parallel_type (type0, xa_suffix); |
8011 | ||
8012 | /* As mentioned in exp_dbug.ads, for non bit-packed arrays an | |
8013 | encoding suffixed with 'P' may still be generated. If so, | |
8014 | it should be used to find the XA type. */ | |
8015 | ||
8016 | if (index_type_desc == NULL) | |
8017 | { | |
1da0522e | 8018 | const char *type_name = ada_type_name (type0); |
931e5bc3 | 8019 | |
1da0522e | 8020 | if (type_name != NULL) |
931e5bc3 | 8021 | { |
1da0522e | 8022 | const int len = strlen (type_name); |
931e5bc3 JG |
8023 | char *name = (char *) alloca (len + strlen (xa_suffix)); |
8024 | ||
1da0522e | 8025 | if (type_name[len - 1] == 'P') |
931e5bc3 | 8026 | { |
1da0522e | 8027 | strcpy (name, type_name); |
931e5bc3 JG |
8028 | strcpy (name + len - 1, xa_suffix); |
8029 | index_type_desc = ada_find_parallel_type_with_name (type0, name); | |
8030 | } | |
8031 | } | |
8032 | } | |
8033 | ||
28c85d6c | 8034 | ada_fixup_array_indexes_type (index_type_desc); |
8908fca5 JB |
8035 | if (index_type_desc != NULL |
8036 | && ada_is_redundant_index_type_desc (type0, index_type_desc)) | |
8037 | { | |
8038 | /* Ignore this ___XA parallel type, as it does not bring any | |
8039 | useful information. This allows us to avoid creating fixed | |
8040 | versions of the array's index types, which would be identical | |
8041 | to the original ones. This, in turn, can also help avoid | |
8042 | the creation of fixed versions of the array itself. */ | |
8043 | index_type_desc = NULL; | |
8044 | } | |
8045 | ||
14f9c5c9 AS |
8046 | if (index_type_desc == NULL) |
8047 | { | |
61ee279c | 8048 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
5b4ee69b | 8049 | |
14f9c5c9 | 8050 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
dda83cd7 SM |
8051 | depend on the contents of the array in properly constructed |
8052 | debugging data. */ | |
529cad9c | 8053 | /* Create a fixed version of the array element type. |
dda83cd7 SM |
8054 | We're not providing the address of an element here, |
8055 | and thus the actual object value cannot be inspected to do | |
8056 | the conversion. This should not be a problem, since arrays of | |
8057 | unconstrained objects are not allowed. In particular, all | |
8058 | the elements of an array of a tagged type should all be of | |
8059 | the same type specified in the debugging info. No need to | |
8060 | consult the object tag. */ | |
1ed6ede0 | 8061 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 8062 | |
284614f0 JB |
8063 | /* Make sure we always create a new array type when dealing with |
8064 | packed array types, since we're going to fix-up the array | |
8065 | type length and element bitsize a little further down. */ | |
ad82864c | 8066 | if (elt_type0 == elt_type && !constrained_packed_array_p) |
dda83cd7 | 8067 | result = type0; |
14f9c5c9 | 8068 | else |
dda83cd7 SM |
8069 | result = create_array_type (alloc_type_copy (type0), |
8070 | elt_type, type0->index_type ()); | |
14f9c5c9 AS |
8071 | } |
8072 | else | |
8073 | { | |
8074 | int i; | |
8075 | struct type *elt_type0; | |
8076 | ||
8077 | elt_type0 = type0; | |
1f704f76 | 8078 | for (i = index_type_desc->num_fields (); i > 0; i -= 1) |
dda83cd7 | 8079 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
8080 | |
8081 | /* NOTE: result---the fixed version of elt_type0---should never | |
dda83cd7 SM |
8082 | depend on the contents of the array in properly constructed |
8083 | debugging data. */ | |
529cad9c | 8084 | /* Create a fixed version of the array element type. |
dda83cd7 SM |
8085 | We're not providing the address of an element here, |
8086 | and thus the actual object value cannot be inspected to do | |
8087 | the conversion. This should not be a problem, since arrays of | |
8088 | unconstrained objects are not allowed. In particular, all | |
8089 | the elements of an array of a tagged type should all be of | |
8090 | the same type specified in the debugging info. No need to | |
8091 | consult the object tag. */ | |
1ed6ede0 | 8092 | result = |
dda83cd7 | 8093 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); |
1ce677a4 UW |
8094 | |
8095 | elt_type0 = type0; | |
1f704f76 | 8096 | for (i = index_type_desc->num_fields () - 1; i >= 0; i -= 1) |
dda83cd7 SM |
8097 | { |
8098 | struct type *range_type = | |
8099 | to_fixed_range_type (index_type_desc->field (i).type (), dval); | |
5b4ee69b | 8100 | |
dda83cd7 SM |
8101 | result = create_array_type (alloc_type_copy (elt_type0), |
8102 | result, range_type); | |
1ce677a4 | 8103 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
dda83cd7 | 8104 | } |
d2e4a39e | 8105 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
dda83cd7 | 8106 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
8107 | } |
8108 | ||
2e6fda7d JB |
8109 | /* We want to preserve the type name. This can be useful when |
8110 | trying to get the type name of a value that has already been | |
8111 | printed (for instance, if the user did "print VAR; whatis $". */ | |
7d93a1e0 | 8112 | result->set_name (type0->name ()); |
2e6fda7d | 8113 | |
ad82864c | 8114 | if (constrained_packed_array_p) |
284614f0 JB |
8115 | { |
8116 | /* So far, the resulting type has been created as if the original | |
8117 | type was a regular (non-packed) array type. As a result, the | |
8118 | bitsize of the array elements needs to be set again, and the array | |
8119 | length needs to be recomputed based on that bitsize. */ | |
8120 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
8121 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
8122 | ||
8123 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
8124 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
8125 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
dda83cd7 | 8126 | TYPE_LENGTH (result)++; |
284614f0 JB |
8127 | } |
8128 | ||
9cdd0d12 | 8129 | result->set_is_fixed_instance (true); |
14f9c5c9 | 8130 | return result; |
d2e4a39e | 8131 | } |
14f9c5c9 AS |
8132 | |
8133 | ||
8134 | /* A standard type (containing no dynamically sized components) | |
8135 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
8136 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 8137 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
8138 | ADDRESS or in VALADDR contains these discriminants. |
8139 | ||
1ed6ede0 JB |
8140 | If CHECK_TAG is not null, in the case of tagged types, this function |
8141 | attempts to locate the object's tag and use it to compute the actual | |
8142 | type. However, when ADDRESS is null, we cannot use it to determine the | |
8143 | location of the tag, and therefore compute the tagged type's actual type. | |
8144 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 8145 | |
f192137b JB |
8146 | static struct type * |
8147 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
dda83cd7 | 8148 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 8149 | { |
61ee279c | 8150 | type = ada_check_typedef (type); |
8ecb59f8 TT |
8151 | |
8152 | /* Only un-fixed types need to be handled here. */ | |
8153 | if (!HAVE_GNAT_AUX_INFO (type)) | |
8154 | return type; | |
8155 | ||
78134374 | 8156 | switch (type->code ()) |
d2e4a39e AS |
8157 | { |
8158 | default: | |
14f9c5c9 | 8159 | return type; |
d2e4a39e | 8160 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 8161 | { |
dda83cd7 SM |
8162 | struct type *static_type = to_static_fixed_type (type); |
8163 | struct type *fixed_record_type = | |
8164 | to_fixed_record_type (type, valaddr, address, NULL); | |
8165 | ||
8166 | /* If STATIC_TYPE is a tagged type and we know the object's address, | |
8167 | then we can determine its tag, and compute the object's actual | |
8168 | type from there. Note that we have to use the fixed record | |
8169 | type (the parent part of the record may have dynamic fields | |
8170 | and the way the location of _tag is expressed may depend on | |
8171 | them). */ | |
8172 | ||
8173 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) | |
8174 | { | |
b50d69b5 JG |
8175 | struct value *tag = |
8176 | value_tag_from_contents_and_address | |
8177 | (fixed_record_type, | |
8178 | valaddr, | |
8179 | address); | |
8180 | struct type *real_type = type_from_tag (tag); | |
8181 | struct value *obj = | |
8182 | value_from_contents_and_address (fixed_record_type, | |
8183 | valaddr, | |
8184 | address); | |
dda83cd7 SM |
8185 | fixed_record_type = value_type (obj); |
8186 | if (real_type != NULL) | |
8187 | return to_fixed_record_type | |
b50d69b5 JG |
8188 | (real_type, NULL, |
8189 | value_address (ada_tag_value_at_base_address (obj)), NULL); | |
dda83cd7 SM |
8190 | } |
8191 | ||
8192 | /* Check to see if there is a parallel ___XVZ variable. | |
8193 | If there is, then it provides the actual size of our type. */ | |
8194 | else if (ada_type_name (fixed_record_type) != NULL) | |
8195 | { | |
8196 | const char *name = ada_type_name (fixed_record_type); | |
8197 | char *xvz_name | |
224c3ddb | 8198 | = (char *) alloca (strlen (name) + 7 /* "___XVZ\0" */); |
eccab96d | 8199 | bool xvz_found = false; |
dda83cd7 | 8200 | LONGEST size; |
4af88198 | 8201 | |
dda83cd7 | 8202 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
a70b8144 | 8203 | try |
eccab96d JB |
8204 | { |
8205 | xvz_found = get_int_var_value (xvz_name, size); | |
8206 | } | |
230d2906 | 8207 | catch (const gdb_exception_error &except) |
eccab96d JB |
8208 | { |
8209 | /* We found the variable, but somehow failed to read | |
8210 | its value. Rethrow the same error, but with a little | |
8211 | bit more information, to help the user understand | |
8212 | what went wrong (Eg: the variable might have been | |
8213 | optimized out). */ | |
8214 | throw_error (except.error, | |
8215 | _("unable to read value of %s (%s)"), | |
3d6e9d23 | 8216 | xvz_name, except.what ()); |
eccab96d | 8217 | } |
eccab96d | 8218 | |
dda83cd7 SM |
8219 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) |
8220 | { | |
8221 | fixed_record_type = copy_type (fixed_record_type); | |
8222 | TYPE_LENGTH (fixed_record_type) = size; | |
8223 | ||
8224 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
8225 | observed this when the debugging info is STABS, and | |
8226 | apparently it is something that is hard to fix. | |
8227 | ||
8228 | In practice, we don't need the actual type definition | |
8229 | at all, because the presence of the XVZ variable allows us | |
8230 | to assume that there must be a XVS type as well, which we | |
8231 | should be able to use later, when we need the actual type | |
8232 | definition. | |
8233 | ||
8234 | In the meantime, pretend that the "fixed" type we are | |
8235 | returning is NOT a stub, because this can cause trouble | |
8236 | when using this type to create new types targeting it. | |
8237 | Indeed, the associated creation routines often check | |
8238 | whether the target type is a stub and will try to replace | |
8239 | it, thus using a type with the wrong size. This, in turn, | |
8240 | might cause the new type to have the wrong size too. | |
8241 | Consider the case of an array, for instance, where the size | |
8242 | of the array is computed from the number of elements in | |
8243 | our array multiplied by the size of its element. */ | |
b4b73759 | 8244 | fixed_record_type->set_is_stub (false); |
dda83cd7 SM |
8245 | } |
8246 | } | |
8247 | return fixed_record_type; | |
4c4b4cd2 | 8248 | } |
d2e4a39e | 8249 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 8250 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
8251 | case TYPE_CODE_UNION: |
8252 | if (dval == NULL) | |
dda83cd7 | 8253 | return type; |
d2e4a39e | 8254 | else |
dda83cd7 | 8255 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 8256 | } |
14f9c5c9 AS |
8257 | } |
8258 | ||
f192137b JB |
8259 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
8260 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
96dbd2c1 JB |
8261 | |
8262 | The typedef layer needs be preserved in order to differentiate between | |
8263 | arrays and array pointers when both types are implemented using the same | |
8264 | fat pointer. In the array pointer case, the pointer is encoded as | |
8265 | a typedef of the pointer type. For instance, considering: | |
8266 | ||
8267 | type String_Access is access String; | |
8268 | S1 : String_Access := null; | |
8269 | ||
8270 | To the debugger, S1 is defined as a typedef of type String. But | |
8271 | to the user, it is a pointer. So if the user tries to print S1, | |
8272 | we should not dereference the array, but print the array address | |
8273 | instead. | |
8274 | ||
8275 | If we didn't preserve the typedef layer, we would lose the fact that | |
8276 | the type is to be presented as a pointer (needs de-reference before | |
8277 | being printed). And we would also use the source-level type name. */ | |
f192137b JB |
8278 | |
8279 | struct type * | |
8280 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
dda83cd7 | 8281 | CORE_ADDR address, struct value *dval, int check_tag) |
f192137b JB |
8282 | |
8283 | { | |
8284 | struct type *fixed_type = | |
8285 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
8286 | ||
96dbd2c1 JB |
8287 | /* If TYPE is a typedef and its target type is the same as the FIXED_TYPE, |
8288 | then preserve the typedef layer. | |
8289 | ||
8290 | Implementation note: We can only check the main-type portion of | |
8291 | the TYPE and FIXED_TYPE, because eliminating the typedef layer | |
8292 | from TYPE now returns a type that has the same instance flags | |
8293 | as TYPE. For instance, if TYPE is a "typedef const", and its | |
8294 | target type is a "struct", then the typedef elimination will return | |
8295 | a "const" version of the target type. See check_typedef for more | |
8296 | details about how the typedef layer elimination is done. | |
8297 | ||
8298 | brobecker/2010-11-19: It seems to me that the only case where it is | |
8299 | useful to preserve the typedef layer is when dealing with fat pointers. | |
8300 | Perhaps, we could add a check for that and preserve the typedef layer | |
85102364 | 8301 | only in that situation. But this seems unnecessary so far, probably |
96dbd2c1 JB |
8302 | because we call check_typedef/ada_check_typedef pretty much everywhere. |
8303 | */ | |
78134374 | 8304 | if (type->code () == TYPE_CODE_TYPEDEF |
720d1a40 | 8305 | && (TYPE_MAIN_TYPE (ada_typedef_target_type (type)) |
96dbd2c1 | 8306 | == TYPE_MAIN_TYPE (fixed_type))) |
f192137b JB |
8307 | return type; |
8308 | ||
8309 | return fixed_type; | |
8310 | } | |
8311 | ||
14f9c5c9 | 8312 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 8313 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 8314 | |
d2e4a39e AS |
8315 | static struct type * |
8316 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 8317 | { |
d2e4a39e | 8318 | struct type *type; |
14f9c5c9 AS |
8319 | |
8320 | if (type0 == NULL) | |
8321 | return NULL; | |
8322 | ||
22c4c60c | 8323 | if (type0->is_fixed_instance ()) |
4c4b4cd2 PH |
8324 | return type0; |
8325 | ||
61ee279c | 8326 | type0 = ada_check_typedef (type0); |
d2e4a39e | 8327 | |
78134374 | 8328 | switch (type0->code ()) |
14f9c5c9 AS |
8329 | { |
8330 | default: | |
8331 | return type0; | |
8332 | case TYPE_CODE_STRUCT: | |
8333 | type = dynamic_template_type (type0); | |
d2e4a39e | 8334 | if (type != NULL) |
dda83cd7 | 8335 | return template_to_static_fixed_type (type); |
4c4b4cd2 | 8336 | else |
dda83cd7 | 8337 | return template_to_static_fixed_type (type0); |
14f9c5c9 AS |
8338 | case TYPE_CODE_UNION: |
8339 | type = ada_find_parallel_type (type0, "___XVU"); | |
8340 | if (type != NULL) | |
dda83cd7 | 8341 | return template_to_static_fixed_type (type); |
4c4b4cd2 | 8342 | else |
dda83cd7 | 8343 | return template_to_static_fixed_type (type0); |
14f9c5c9 AS |
8344 | } |
8345 | } | |
8346 | ||
4c4b4cd2 PH |
8347 | /* A static approximation of TYPE with all type wrappers removed. */ |
8348 | ||
d2e4a39e AS |
8349 | static struct type * |
8350 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
8351 | { |
8352 | if (ada_is_aligner_type (type)) | |
8353 | { | |
940da03e | 8354 | struct type *type1 = ada_check_typedef (type)->field (0).type (); |
14f9c5c9 | 8355 | if (ada_type_name (type1) == NULL) |
d0e39ea2 | 8356 | type1->set_name (ada_type_name (type)); |
14f9c5c9 AS |
8357 | |
8358 | return static_unwrap_type (type1); | |
8359 | } | |
d2e4a39e | 8360 | else |
14f9c5c9 | 8361 | { |
d2e4a39e | 8362 | struct type *raw_real_type = ada_get_base_type (type); |
5b4ee69b | 8363 | |
d2e4a39e | 8364 | if (raw_real_type == type) |
dda83cd7 | 8365 | return type; |
14f9c5c9 | 8366 | else |
dda83cd7 | 8367 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
8368 | } |
8369 | } | |
8370 | ||
8371 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 8372 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
8373 | type Foo; |
8374 | type FooP is access Foo; | |
8375 | V: FooP; | |
8376 | type Foo is array ...; | |
4c4b4cd2 | 8377 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
8378 | cross-references to such types, we instead substitute for FooP a |
8379 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 8380 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
8381 | |
8382 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
8383 | exists, otherwise TYPE. */ |
8384 | ||
d2e4a39e | 8385 | struct type * |
61ee279c | 8386 | ada_check_typedef (struct type *type) |
14f9c5c9 | 8387 | { |
727e3d2e JB |
8388 | if (type == NULL) |
8389 | return NULL; | |
8390 | ||
736ade86 XR |
8391 | /* If our type is an access to an unconstrained array, which is encoded |
8392 | as a TYPE_CODE_TYPEDEF of a fat pointer, then we're done. | |
720d1a40 JB |
8393 | We don't want to strip the TYPE_CODE_TYPDEF layer, because this is |
8394 | what allows us to distinguish between fat pointers that represent | |
8395 | array types, and fat pointers that represent array access types | |
8396 | (in both cases, the compiler implements them as fat pointers). */ | |
736ade86 | 8397 | if (ada_is_access_to_unconstrained_array (type)) |
720d1a40 JB |
8398 | return type; |
8399 | ||
f168693b | 8400 | type = check_typedef (type); |
78134374 | 8401 | if (type == NULL || type->code () != TYPE_CODE_ENUM |
e46d3488 | 8402 | || !type->is_stub () |
7d93a1e0 | 8403 | || type->name () == NULL) |
14f9c5c9 | 8404 | return type; |
d2e4a39e | 8405 | else |
14f9c5c9 | 8406 | { |
7d93a1e0 | 8407 | const char *name = type->name (); |
d2e4a39e | 8408 | struct type *type1 = ada_find_any_type (name); |
5b4ee69b | 8409 | |
05e522ef | 8410 | if (type1 == NULL) |
dda83cd7 | 8411 | return type; |
05e522ef JB |
8412 | |
8413 | /* TYPE1 might itself be a TYPE_CODE_TYPEDEF (this can happen with | |
8414 | stubs pointing to arrays, as we don't create symbols for array | |
3a867c22 JB |
8415 | types, only for the typedef-to-array types). If that's the case, |
8416 | strip the typedef layer. */ | |
78134374 | 8417 | if (type1->code () == TYPE_CODE_TYPEDEF) |
3a867c22 JB |
8418 | type1 = ada_check_typedef (type1); |
8419 | ||
8420 | return type1; | |
14f9c5c9 AS |
8421 | } |
8422 | } | |
8423 | ||
8424 | /* A value representing the data at VALADDR/ADDRESS as described by | |
8425 | type TYPE0, but with a standard (static-sized) type that correctly | |
8426 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
8427 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 8428 | creation of struct values]. */ |
14f9c5c9 | 8429 | |
4c4b4cd2 PH |
8430 | static struct value * |
8431 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
dda83cd7 | 8432 | struct value *val0) |
14f9c5c9 | 8433 | { |
1ed6ede0 | 8434 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
5b4ee69b | 8435 | |
14f9c5c9 AS |
8436 | if (type == type0 && val0 != NULL) |
8437 | return val0; | |
cc0e770c JB |
8438 | |
8439 | if (VALUE_LVAL (val0) != lval_memory) | |
8440 | { | |
8441 | /* Our value does not live in memory; it could be a convenience | |
8442 | variable, for instance. Create a not_lval value using val0's | |
8443 | contents. */ | |
8444 | return value_from_contents (type, value_contents (val0)); | |
8445 | } | |
8446 | ||
8447 | return value_from_contents_and_address (type, 0, address); | |
4c4b4cd2 PH |
8448 | } |
8449 | ||
8450 | /* A value representing VAL, but with a standard (static-sized) type | |
8451 | that correctly describes it. Does not necessarily create a new | |
8452 | value. */ | |
8453 | ||
0c3acc09 | 8454 | struct value * |
4c4b4cd2 PH |
8455 | ada_to_fixed_value (struct value *val) |
8456 | { | |
c48db5ca | 8457 | val = unwrap_value (val); |
d8ce9127 | 8458 | val = ada_to_fixed_value_create (value_type (val), value_address (val), val); |
c48db5ca | 8459 | return val; |
14f9c5c9 | 8460 | } |
d2e4a39e | 8461 | \f |
14f9c5c9 | 8462 | |
14f9c5c9 AS |
8463 | /* Attributes */ |
8464 | ||
4c4b4cd2 PH |
8465 | /* Table mapping attribute numbers to names. |
8466 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 8467 | |
27087b7f | 8468 | static const char * const attribute_names[] = { |
14f9c5c9 AS |
8469 | "<?>", |
8470 | ||
d2e4a39e | 8471 | "first", |
14f9c5c9 AS |
8472 | "last", |
8473 | "length", | |
8474 | "image", | |
14f9c5c9 AS |
8475 | "max", |
8476 | "min", | |
4c4b4cd2 PH |
8477 | "modulus", |
8478 | "pos", | |
8479 | "size", | |
8480 | "tag", | |
14f9c5c9 | 8481 | "val", |
14f9c5c9 AS |
8482 | 0 |
8483 | }; | |
8484 | ||
de93309a | 8485 | static const char * |
4c4b4cd2 | 8486 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 8487 | { |
4c4b4cd2 PH |
8488 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
8489 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
8490 | else |
8491 | return attribute_names[0]; | |
8492 | } | |
8493 | ||
4c4b4cd2 | 8494 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 8495 | |
4c4b4cd2 PH |
8496 | static LONGEST |
8497 | pos_atr (struct value *arg) | |
14f9c5c9 | 8498 | { |
24209737 PH |
8499 | struct value *val = coerce_ref (arg); |
8500 | struct type *type = value_type (val); | |
14f9c5c9 | 8501 | |
d2e4a39e | 8502 | if (!discrete_type_p (type)) |
323e0a4a | 8503 | error (_("'POS only defined on discrete types")); |
14f9c5c9 | 8504 | |
6244c119 SM |
8505 | gdb::optional<LONGEST> result = discrete_position (type, value_as_long (val)); |
8506 | if (!result.has_value ()) | |
aa715135 | 8507 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 | 8508 | |
6244c119 | 8509 | return *result; |
4c4b4cd2 PH |
8510 | } |
8511 | ||
7631cf6c | 8512 | struct value * |
7992accc TT |
8513 | ada_pos_atr (struct type *expect_type, |
8514 | struct expression *exp, | |
8515 | enum noside noside, enum exp_opcode op, | |
8516 | struct value *arg) | |
4c4b4cd2 | 8517 | { |
7992accc TT |
8518 | struct type *type = builtin_type (exp->gdbarch)->builtin_int; |
8519 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8520 | return value_zero (type, not_lval); | |
3cb382c9 | 8521 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
8522 | } |
8523 | ||
4c4b4cd2 | 8524 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 8525 | |
d2e4a39e | 8526 | static struct value * |
53a47a3e | 8527 | val_atr (struct type *type, LONGEST val) |
14f9c5c9 | 8528 | { |
53a47a3e | 8529 | gdb_assert (discrete_type_p (type)); |
0bc2354b TT |
8530 | if (type->code () == TYPE_CODE_RANGE) |
8531 | type = TYPE_TARGET_TYPE (type); | |
78134374 | 8532 | if (type->code () == TYPE_CODE_ENUM) |
14f9c5c9 | 8533 | { |
53a47a3e | 8534 | if (val < 0 || val >= type->num_fields ()) |
dda83cd7 | 8535 | error (_("argument to 'VAL out of range")); |
53a47a3e | 8536 | val = TYPE_FIELD_ENUMVAL (type, val); |
14f9c5c9 | 8537 | } |
53a47a3e TT |
8538 | return value_from_longest (type, val); |
8539 | } | |
8540 | ||
9e99f48f | 8541 | struct value * |
3848abd6 | 8542 | ada_val_atr (enum noside noside, struct type *type, struct value *arg) |
53a47a3e | 8543 | { |
3848abd6 TT |
8544 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8545 | return value_zero (type, not_lval); | |
8546 | ||
53a47a3e TT |
8547 | if (!discrete_type_p (type)) |
8548 | error (_("'VAL only defined on discrete types")); | |
8549 | if (!integer_type_p (value_type (arg))) | |
8550 | error (_("'VAL requires integral argument")); | |
8551 | ||
8552 | return val_atr (type, value_as_long (arg)); | |
14f9c5c9 | 8553 | } |
14f9c5c9 | 8554 | \f |
d2e4a39e | 8555 | |
dda83cd7 | 8556 | /* Evaluation */ |
14f9c5c9 | 8557 | |
4c4b4cd2 PH |
8558 | /* True if TYPE appears to be an Ada character type. |
8559 | [At the moment, this is true only for Character and Wide_Character; | |
8560 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 8561 | |
fc913e53 | 8562 | bool |
d2e4a39e | 8563 | ada_is_character_type (struct type *type) |
14f9c5c9 | 8564 | { |
7b9f71f2 JB |
8565 | const char *name; |
8566 | ||
8567 | /* If the type code says it's a character, then assume it really is, | |
8568 | and don't check any further. */ | |
78134374 | 8569 | if (type->code () == TYPE_CODE_CHAR) |
fc913e53 | 8570 | return true; |
7b9f71f2 JB |
8571 | |
8572 | /* Otherwise, assume it's a character type iff it is a discrete type | |
8573 | with a known character type name. */ | |
8574 | name = ada_type_name (type); | |
8575 | return (name != NULL | |
dda83cd7 SM |
8576 | && (type->code () == TYPE_CODE_INT |
8577 | || type->code () == TYPE_CODE_RANGE) | |
8578 | && (strcmp (name, "character") == 0 | |
8579 | || strcmp (name, "wide_character") == 0 | |
8580 | || strcmp (name, "wide_wide_character") == 0 | |
8581 | || strcmp (name, "unsigned char") == 0)); | |
14f9c5c9 AS |
8582 | } |
8583 | ||
4c4b4cd2 | 8584 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 | 8585 | |
fc913e53 | 8586 | bool |
ebf56fd3 | 8587 | ada_is_string_type (struct type *type) |
14f9c5c9 | 8588 | { |
61ee279c | 8589 | type = ada_check_typedef (type); |
d2e4a39e | 8590 | if (type != NULL |
78134374 | 8591 | && type->code () != TYPE_CODE_PTR |
76a01679 | 8592 | && (ada_is_simple_array_type (type) |
dda83cd7 | 8593 | || ada_is_array_descriptor_type (type)) |
14f9c5c9 AS |
8594 | && ada_array_arity (type) == 1) |
8595 | { | |
8596 | struct type *elttype = ada_array_element_type (type, 1); | |
8597 | ||
8598 | return ada_is_character_type (elttype); | |
8599 | } | |
d2e4a39e | 8600 | else |
fc913e53 | 8601 | return false; |
14f9c5c9 AS |
8602 | } |
8603 | ||
5bf03f13 JB |
8604 | /* The compiler sometimes provides a parallel XVS type for a given |
8605 | PAD type. Normally, it is safe to follow the PAD type directly, | |
8606 | but older versions of the compiler have a bug that causes the offset | |
8607 | of its "F" field to be wrong. Following that field in that case | |
8608 | would lead to incorrect results, but this can be worked around | |
8609 | by ignoring the PAD type and using the associated XVS type instead. | |
8610 | ||
8611 | Set to True if the debugger should trust the contents of PAD types. | |
8612 | Otherwise, ignore the PAD type if there is a parallel XVS type. */ | |
491144b5 | 8613 | static bool trust_pad_over_xvs = true; |
14f9c5c9 AS |
8614 | |
8615 | /* True if TYPE is a struct type introduced by the compiler to force the | |
8616 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 8617 | distinctive name. */ |
14f9c5c9 AS |
8618 | |
8619 | int | |
ebf56fd3 | 8620 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 8621 | { |
61ee279c | 8622 | type = ada_check_typedef (type); |
714e53ab | 8623 | |
5bf03f13 | 8624 | if (!trust_pad_over_xvs && ada_find_parallel_type (type, "___XVS") != NULL) |
714e53ab PH |
8625 | return 0; |
8626 | ||
78134374 | 8627 | return (type->code () == TYPE_CODE_STRUCT |
dda83cd7 SM |
8628 | && type->num_fields () == 1 |
8629 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
8630 | } |
8631 | ||
8632 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 8633 | the parallel type. */ |
14f9c5c9 | 8634 | |
d2e4a39e AS |
8635 | struct type * |
8636 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 8637 | { |
d2e4a39e AS |
8638 | struct type *real_type_namer; |
8639 | struct type *raw_real_type; | |
14f9c5c9 | 8640 | |
78134374 | 8641 | if (raw_type == NULL || raw_type->code () != TYPE_CODE_STRUCT) |
14f9c5c9 AS |
8642 | return raw_type; |
8643 | ||
284614f0 JB |
8644 | if (ada_is_aligner_type (raw_type)) |
8645 | /* The encoding specifies that we should always use the aligner type. | |
8646 | So, even if this aligner type has an associated XVS type, we should | |
8647 | simply ignore it. | |
8648 | ||
8649 | According to the compiler gurus, an XVS type parallel to an aligner | |
8650 | type may exist because of a stabs limitation. In stabs, aligner | |
8651 | types are empty because the field has a variable-sized type, and | |
8652 | thus cannot actually be used as an aligner type. As a result, | |
8653 | we need the associated parallel XVS type to decode the type. | |
8654 | Since the policy in the compiler is to not change the internal | |
8655 | representation based on the debugging info format, we sometimes | |
8656 | end up having a redundant XVS type parallel to the aligner type. */ | |
8657 | return raw_type; | |
8658 | ||
14f9c5c9 | 8659 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 8660 | if (real_type_namer == NULL |
78134374 | 8661 | || real_type_namer->code () != TYPE_CODE_STRUCT |
1f704f76 | 8662 | || real_type_namer->num_fields () != 1) |
14f9c5c9 AS |
8663 | return raw_type; |
8664 | ||
940da03e | 8665 | if (real_type_namer->field (0).type ()->code () != TYPE_CODE_REF) |
f80d3ff2 JB |
8666 | { |
8667 | /* This is an older encoding form where the base type needs to be | |
85102364 | 8668 | looked up by name. We prefer the newer encoding because it is |
f80d3ff2 JB |
8669 | more efficient. */ |
8670 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
8671 | if (raw_real_type == NULL) | |
8672 | return raw_type; | |
8673 | else | |
8674 | return raw_real_type; | |
8675 | } | |
8676 | ||
8677 | /* The field in our XVS type is a reference to the base type. */ | |
940da03e | 8678 | return TYPE_TARGET_TYPE (real_type_namer->field (0).type ()); |
d2e4a39e | 8679 | } |
14f9c5c9 | 8680 | |
4c4b4cd2 | 8681 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 8682 | |
d2e4a39e AS |
8683 | struct type * |
8684 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
8685 | { |
8686 | if (ada_is_aligner_type (type)) | |
940da03e | 8687 | return ada_aligned_type (type->field (0).type ()); |
14f9c5c9 AS |
8688 | else |
8689 | return ada_get_base_type (type); | |
8690 | } | |
8691 | ||
8692 | ||
8693 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 8694 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 8695 | |
fc1a4b47 AC |
8696 | const gdb_byte * |
8697 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 8698 | { |
d2e4a39e | 8699 | if (ada_is_aligner_type (type)) |
940da03e | 8700 | return ada_aligned_value_addr (type->field (0).type (), |
dda83cd7 SM |
8701 | valaddr + |
8702 | TYPE_FIELD_BITPOS (type, | |
8703 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
8704 | else |
8705 | return valaddr; | |
8706 | } | |
8707 | ||
4c4b4cd2 PH |
8708 | |
8709 | ||
14f9c5c9 | 8710 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 8711 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
8712 | const char * |
8713 | ada_enum_name (const char *name) | |
14f9c5c9 | 8714 | { |
5f9febe0 | 8715 | static std::string storage; |
e6a959d6 | 8716 | const char *tmp; |
14f9c5c9 | 8717 | |
4c4b4cd2 PH |
8718 | /* First, unqualify the enumeration name: |
8719 | 1. Search for the last '.' character. If we find one, then skip | |
177b42fe | 8720 | all the preceding characters, the unqualified name starts |
76a01679 | 8721 | right after that dot. |
4c4b4cd2 | 8722 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
8723 | translates dots into "__". Search forward for double underscores, |
8724 | but stop searching when we hit an overloading suffix, which is | |
8725 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 8726 | |
c3e5cd34 PH |
8727 | tmp = strrchr (name, '.'); |
8728 | if (tmp != NULL) | |
4c4b4cd2 PH |
8729 | name = tmp + 1; |
8730 | else | |
14f9c5c9 | 8731 | { |
4c4b4cd2 | 8732 | while ((tmp = strstr (name, "__")) != NULL) |
dda83cd7 SM |
8733 | { |
8734 | if (isdigit (tmp[2])) | |
8735 | break; | |
8736 | else | |
8737 | name = tmp + 2; | |
8738 | } | |
14f9c5c9 AS |
8739 | } |
8740 | ||
8741 | if (name[0] == 'Q') | |
8742 | { | |
14f9c5c9 | 8743 | int v; |
5b4ee69b | 8744 | |
14f9c5c9 | 8745 | if (name[1] == 'U' || name[1] == 'W') |
dda83cd7 SM |
8746 | { |
8747 | if (sscanf (name + 2, "%x", &v) != 1) | |
8748 | return name; | |
8749 | } | |
272560b5 TT |
8750 | else if (((name[1] >= '0' && name[1] <= '9') |
8751 | || (name[1] >= 'a' && name[1] <= 'z')) | |
8752 | && name[2] == '\0') | |
8753 | { | |
5f9febe0 TT |
8754 | storage = string_printf ("'%c'", name[1]); |
8755 | return storage.c_str (); | |
272560b5 | 8756 | } |
14f9c5c9 | 8757 | else |
dda83cd7 | 8758 | return name; |
14f9c5c9 AS |
8759 | |
8760 | if (isascii (v) && isprint (v)) | |
5f9febe0 | 8761 | storage = string_printf ("'%c'", v); |
14f9c5c9 | 8762 | else if (name[1] == 'U') |
5f9febe0 | 8763 | storage = string_printf ("[\"%02x\"]", v); |
14f9c5c9 | 8764 | else |
5f9febe0 | 8765 | storage = string_printf ("[\"%04x\"]", v); |
14f9c5c9 | 8766 | |
5f9febe0 | 8767 | return storage.c_str (); |
14f9c5c9 | 8768 | } |
d2e4a39e | 8769 | else |
4c4b4cd2 | 8770 | { |
c3e5cd34 PH |
8771 | tmp = strstr (name, "__"); |
8772 | if (tmp == NULL) | |
8773 | tmp = strstr (name, "$"); | |
8774 | if (tmp != NULL) | |
dda83cd7 | 8775 | { |
5f9febe0 TT |
8776 | storage = std::string (name, tmp - name); |
8777 | return storage.c_str (); | |
dda83cd7 | 8778 | } |
4c4b4cd2 PH |
8779 | |
8780 | return name; | |
8781 | } | |
14f9c5c9 AS |
8782 | } |
8783 | ||
14f9c5c9 | 8784 | /* If VAL is wrapped in an aligner or subtype wrapper, return the |
4c4b4cd2 | 8785 | value it wraps. */ |
14f9c5c9 | 8786 | |
d2e4a39e AS |
8787 | static struct value * |
8788 | unwrap_value (struct value *val) | |
14f9c5c9 | 8789 | { |
df407dfe | 8790 | struct type *type = ada_check_typedef (value_type (val)); |
5b4ee69b | 8791 | |
14f9c5c9 AS |
8792 | if (ada_is_aligner_type (type)) |
8793 | { | |
de4d072f | 8794 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 8795 | struct type *val_type = ada_check_typedef (value_type (v)); |
5b4ee69b | 8796 | |
14f9c5c9 | 8797 | if (ada_type_name (val_type) == NULL) |
d0e39ea2 | 8798 | val_type->set_name (ada_type_name (type)); |
14f9c5c9 AS |
8799 | |
8800 | return unwrap_value (v); | |
8801 | } | |
d2e4a39e | 8802 | else |
14f9c5c9 | 8803 | { |
d2e4a39e | 8804 | struct type *raw_real_type = |
dda83cd7 | 8805 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 8806 | |
5bf03f13 JB |
8807 | /* If there is no parallel XVS or XVE type, then the value is |
8808 | already unwrapped. Return it without further modification. */ | |
8809 | if ((type == raw_real_type) | |
8810 | && ada_find_parallel_type (type, "___XVE") == NULL) | |
8811 | return val; | |
14f9c5c9 | 8812 | |
d2e4a39e | 8813 | return |
dda83cd7 SM |
8814 | coerce_unspec_val_to_type |
8815 | (val, ada_to_fixed_type (raw_real_type, 0, | |
8816 | value_address (val), | |
8817 | NULL, 1)); | |
14f9c5c9 AS |
8818 | } |
8819 | } | |
d2e4a39e | 8820 | |
d99dcf51 JB |
8821 | /* Given two array types T1 and T2, return nonzero iff both arrays |
8822 | contain the same number of elements. */ | |
8823 | ||
8824 | static int | |
8825 | ada_same_array_size_p (struct type *t1, struct type *t2) | |
8826 | { | |
8827 | LONGEST lo1, hi1, lo2, hi2; | |
8828 | ||
8829 | /* Get the array bounds in order to verify that the size of | |
8830 | the two arrays match. */ | |
8831 | if (!get_array_bounds (t1, &lo1, &hi1) | |
8832 | || !get_array_bounds (t2, &lo2, &hi2)) | |
8833 | error (_("unable to determine array bounds")); | |
8834 | ||
8835 | /* To make things easier for size comparison, normalize a bit | |
8836 | the case of empty arrays by making sure that the difference | |
8837 | between upper bound and lower bound is always -1. */ | |
8838 | if (lo1 > hi1) | |
8839 | hi1 = lo1 - 1; | |
8840 | if (lo2 > hi2) | |
8841 | hi2 = lo2 - 1; | |
8842 | ||
8843 | return (hi1 - lo1 == hi2 - lo2); | |
8844 | } | |
8845 | ||
8846 | /* Assuming that VAL is an array of integrals, and TYPE represents | |
8847 | an array with the same number of elements, but with wider integral | |
8848 | elements, return an array "casted" to TYPE. In practice, this | |
8849 | means that the returned array is built by casting each element | |
8850 | of the original array into TYPE's (wider) element type. */ | |
8851 | ||
8852 | static struct value * | |
8853 | ada_promote_array_of_integrals (struct type *type, struct value *val) | |
8854 | { | |
8855 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
8856 | LONGEST lo, hi; | |
8857 | struct value *res; | |
8858 | LONGEST i; | |
8859 | ||
8860 | /* Verify that both val and type are arrays of scalars, and | |
8861 | that the size of val's elements is smaller than the size | |
8862 | of type's element. */ | |
78134374 | 8863 | gdb_assert (type->code () == TYPE_CODE_ARRAY); |
d99dcf51 | 8864 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (type))); |
78134374 | 8865 | gdb_assert (value_type (val)->code () == TYPE_CODE_ARRAY); |
d99dcf51 JB |
8866 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (value_type (val)))); |
8867 | gdb_assert (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) | |
8868 | > TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (val)))); | |
8869 | ||
8870 | if (!get_array_bounds (type, &lo, &hi)) | |
8871 | error (_("unable to determine array bounds")); | |
8872 | ||
8873 | res = allocate_value (type); | |
8874 | ||
8875 | /* Promote each array element. */ | |
8876 | for (i = 0; i < hi - lo + 1; i++) | |
8877 | { | |
8878 | struct value *elt = value_cast (elt_type, value_subscript (val, lo + i)); | |
8879 | ||
8880 | memcpy (value_contents_writeable (res) + (i * TYPE_LENGTH (elt_type)), | |
8881 | value_contents_all (elt), TYPE_LENGTH (elt_type)); | |
8882 | } | |
8883 | ||
8884 | return res; | |
8885 | } | |
8886 | ||
4c4b4cd2 PH |
8887 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
8888 | return the converted value. */ | |
8889 | ||
d2e4a39e AS |
8890 | static struct value * |
8891 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 8892 | { |
df407dfe | 8893 | struct type *type2 = value_type (val); |
5b4ee69b | 8894 | |
14f9c5c9 AS |
8895 | if (type == type2) |
8896 | return val; | |
8897 | ||
61ee279c PH |
8898 | type2 = ada_check_typedef (type2); |
8899 | type = ada_check_typedef (type); | |
14f9c5c9 | 8900 | |
78134374 SM |
8901 | if (type2->code () == TYPE_CODE_PTR |
8902 | && type->code () == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
8903 | { |
8904 | val = ada_value_ind (val); | |
df407dfe | 8905 | type2 = value_type (val); |
14f9c5c9 AS |
8906 | } |
8907 | ||
78134374 SM |
8908 | if (type2->code () == TYPE_CODE_ARRAY |
8909 | && type->code () == TYPE_CODE_ARRAY) | |
14f9c5c9 | 8910 | { |
d99dcf51 JB |
8911 | if (!ada_same_array_size_p (type, type2)) |
8912 | error (_("cannot assign arrays of different length")); | |
8913 | ||
8914 | if (is_integral_type (TYPE_TARGET_TYPE (type)) | |
8915 | && is_integral_type (TYPE_TARGET_TYPE (type2)) | |
8916 | && TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
8917 | < TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
8918 | { | |
8919 | /* Allow implicit promotion of the array elements to | |
8920 | a wider type. */ | |
8921 | return ada_promote_array_of_integrals (type, val); | |
8922 | } | |
8923 | ||
8924 | if (TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
dda83cd7 SM |
8925 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type))) |
8926 | error (_("Incompatible types in assignment")); | |
04624583 | 8927 | deprecated_set_value_type (val, type); |
14f9c5c9 | 8928 | } |
d2e4a39e | 8929 | return val; |
14f9c5c9 AS |
8930 | } |
8931 | ||
4c4b4cd2 PH |
8932 | static struct value * |
8933 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
8934 | { | |
8935 | struct value *val; | |
8936 | struct type *type1, *type2; | |
8937 | LONGEST v, v1, v2; | |
8938 | ||
994b9211 AC |
8939 | arg1 = coerce_ref (arg1); |
8940 | arg2 = coerce_ref (arg2); | |
18af8284 JB |
8941 | type1 = get_base_type (ada_check_typedef (value_type (arg1))); |
8942 | type2 = get_base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 8943 | |
78134374 SM |
8944 | if (type1->code () != TYPE_CODE_INT |
8945 | || type2->code () != TYPE_CODE_INT) | |
4c4b4cd2 PH |
8946 | return value_binop (arg1, arg2, op); |
8947 | ||
76a01679 | 8948 | switch (op) |
4c4b4cd2 PH |
8949 | { |
8950 | case BINOP_MOD: | |
8951 | case BINOP_DIV: | |
8952 | case BINOP_REM: | |
8953 | break; | |
8954 | default: | |
8955 | return value_binop (arg1, arg2, op); | |
8956 | } | |
8957 | ||
8958 | v2 = value_as_long (arg2); | |
8959 | if (v2 == 0) | |
b0f9164c TT |
8960 | { |
8961 | const char *name; | |
8962 | if (op == BINOP_MOD) | |
8963 | name = "mod"; | |
8964 | else if (op == BINOP_DIV) | |
8965 | name = "/"; | |
8966 | else | |
8967 | { | |
8968 | gdb_assert (op == BINOP_REM); | |
8969 | name = "rem"; | |
8970 | } | |
8971 | ||
8972 | error (_("second operand of %s must not be zero."), name); | |
8973 | } | |
4c4b4cd2 | 8974 | |
c6d940a9 | 8975 | if (type1->is_unsigned () || op == BINOP_MOD) |
4c4b4cd2 PH |
8976 | return value_binop (arg1, arg2, op); |
8977 | ||
8978 | v1 = value_as_long (arg1); | |
8979 | switch (op) | |
8980 | { | |
8981 | case BINOP_DIV: | |
8982 | v = v1 / v2; | |
76a01679 | 8983 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
dda83cd7 | 8984 | v += v > 0 ? -1 : 1; |
4c4b4cd2 PH |
8985 | break; |
8986 | case BINOP_REM: | |
8987 | v = v1 % v2; | |
76a01679 | 8988 | if (v * v1 < 0) |
dda83cd7 | 8989 | v -= v2; |
4c4b4cd2 PH |
8990 | break; |
8991 | default: | |
8992 | /* Should not reach this point. */ | |
8993 | v = 0; | |
8994 | } | |
8995 | ||
8996 | val = allocate_value (type1); | |
990a07ab | 8997 | store_unsigned_integer (value_contents_raw (val), |
dda83cd7 | 8998 | TYPE_LENGTH (value_type (val)), |
34877895 | 8999 | type_byte_order (type1), v); |
4c4b4cd2 PH |
9000 | return val; |
9001 | } | |
9002 | ||
9003 | static int | |
9004 | ada_value_equal (struct value *arg1, struct value *arg2) | |
9005 | { | |
df407dfe AC |
9006 | if (ada_is_direct_array_type (value_type (arg1)) |
9007 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 9008 | { |
79e8fcaa JB |
9009 | struct type *arg1_type, *arg2_type; |
9010 | ||
f58b38bf | 9011 | /* Automatically dereference any array reference before |
dda83cd7 | 9012 | we attempt to perform the comparison. */ |
f58b38bf JB |
9013 | arg1 = ada_coerce_ref (arg1); |
9014 | arg2 = ada_coerce_ref (arg2); | |
79e8fcaa | 9015 | |
4c4b4cd2 PH |
9016 | arg1 = ada_coerce_to_simple_array (arg1); |
9017 | arg2 = ada_coerce_to_simple_array (arg2); | |
79e8fcaa JB |
9018 | |
9019 | arg1_type = ada_check_typedef (value_type (arg1)); | |
9020 | arg2_type = ada_check_typedef (value_type (arg2)); | |
9021 | ||
78134374 | 9022 | if (arg1_type->code () != TYPE_CODE_ARRAY |
dda83cd7 SM |
9023 | || arg2_type->code () != TYPE_CODE_ARRAY) |
9024 | error (_("Attempt to compare array with non-array")); | |
4c4b4cd2 | 9025 | /* FIXME: The following works only for types whose |
dda83cd7 SM |
9026 | representations use all bits (no padding or undefined bits) |
9027 | and do not have user-defined equality. */ | |
79e8fcaa JB |
9028 | return (TYPE_LENGTH (arg1_type) == TYPE_LENGTH (arg2_type) |
9029 | && memcmp (value_contents (arg1), value_contents (arg2), | |
9030 | TYPE_LENGTH (arg1_type)) == 0); | |
4c4b4cd2 PH |
9031 | } |
9032 | return value_equal (arg1, arg2); | |
9033 | } | |
9034 | ||
d3c54a1c TT |
9035 | namespace expr |
9036 | { | |
9037 | ||
9038 | bool | |
9039 | check_objfile (const std::unique_ptr<ada_component> &comp, | |
9040 | struct objfile *objfile) | |
9041 | { | |
9042 | return comp->uses_objfile (objfile); | |
9043 | } | |
9044 | ||
9045 | /* Assign the result of evaluating ARG starting at *POS to the INDEXth | |
9046 | component of LHS (a simple array or a record). Does not modify the | |
9047 | inferior's memory, nor does it modify LHS (unless LHS == | |
9048 | CONTAINER). */ | |
52ce6436 PH |
9049 | |
9050 | static void | |
9051 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
d3c54a1c | 9052 | struct expression *exp, operation_up &arg) |
52ce6436 | 9053 | { |
d3c54a1c TT |
9054 | scoped_value_mark mark; |
9055 | ||
52ce6436 | 9056 | struct value *elt; |
0e2da9f0 | 9057 | struct type *lhs_type = check_typedef (value_type (lhs)); |
5b4ee69b | 9058 | |
78134374 | 9059 | if (lhs_type->code () == TYPE_CODE_ARRAY) |
52ce6436 | 9060 | { |
22601c15 UW |
9061 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
9062 | struct value *index_val = value_from_longest (index_type, index); | |
5b4ee69b | 9063 | |
52ce6436 PH |
9064 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
9065 | } | |
9066 | else | |
9067 | { | |
9068 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
c48db5ca | 9069 | elt = ada_to_fixed_value (elt); |
52ce6436 PH |
9070 | } |
9071 | ||
d3c54a1c TT |
9072 | ada_aggregate_operation *ag_op |
9073 | = dynamic_cast<ada_aggregate_operation *> (arg.get ()); | |
9074 | if (ag_op != nullptr) | |
9075 | ag_op->assign_aggregate (container, elt, exp); | |
52ce6436 | 9076 | else |
d3c54a1c TT |
9077 | value_assign_to_component (container, elt, |
9078 | arg->evaluate (nullptr, exp, | |
9079 | EVAL_NORMAL)); | |
9080 | } | |
52ce6436 | 9081 | |
d3c54a1c TT |
9082 | bool |
9083 | ada_aggregate_component::uses_objfile (struct objfile *objfile) | |
9084 | { | |
9085 | for (const auto &item : m_components) | |
9086 | if (item->uses_objfile (objfile)) | |
9087 | return true; | |
9088 | return false; | |
9089 | } | |
9090 | ||
9091 | void | |
9092 | ada_aggregate_component::dump (ui_file *stream, int depth) | |
9093 | { | |
9094 | fprintf_filtered (stream, _("%*sAggregate\n"), depth, ""); | |
9095 | for (const auto &item : m_components) | |
9096 | item->dump (stream, depth + 1); | |
9097 | } | |
9098 | ||
9099 | void | |
9100 | ada_aggregate_component::assign (struct value *container, | |
9101 | struct value *lhs, struct expression *exp, | |
9102 | std::vector<LONGEST> &indices, | |
9103 | LONGEST low, LONGEST high) | |
9104 | { | |
9105 | for (auto &item : m_components) | |
9106 | item->assign (container, lhs, exp, indices, low, high); | |
52ce6436 PH |
9107 | } |
9108 | ||
207582c0 | 9109 | /* See ada-exp.h. */ |
52ce6436 | 9110 | |
207582c0 | 9111 | value * |
d3c54a1c TT |
9112 | ada_aggregate_operation::assign_aggregate (struct value *container, |
9113 | struct value *lhs, | |
9114 | struct expression *exp) | |
52ce6436 PH |
9115 | { |
9116 | struct type *lhs_type; | |
52ce6436 | 9117 | LONGEST low_index, high_index; |
52ce6436 PH |
9118 | |
9119 | container = ada_coerce_ref (container); | |
9120 | if (ada_is_direct_array_type (value_type (container))) | |
9121 | container = ada_coerce_to_simple_array (container); | |
9122 | lhs = ada_coerce_ref (lhs); | |
9123 | if (!deprecated_value_modifiable (lhs)) | |
9124 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
9125 | ||
0e2da9f0 | 9126 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
9127 | if (ada_is_direct_array_type (lhs_type)) |
9128 | { | |
9129 | lhs = ada_coerce_to_simple_array (lhs); | |
0e2da9f0 | 9130 | lhs_type = check_typedef (value_type (lhs)); |
cf88be68 SM |
9131 | low_index = lhs_type->bounds ()->low.const_val (); |
9132 | high_index = lhs_type->bounds ()->high.const_val (); | |
52ce6436 | 9133 | } |
78134374 | 9134 | else if (lhs_type->code () == TYPE_CODE_STRUCT) |
52ce6436 PH |
9135 | { |
9136 | low_index = 0; | |
9137 | high_index = num_visible_fields (lhs_type) - 1; | |
52ce6436 PH |
9138 | } |
9139 | else | |
9140 | error (_("Left-hand side must be array or record.")); | |
9141 | ||
cf608cc4 | 9142 | std::vector<LONGEST> indices (4); |
52ce6436 PH |
9143 | indices[0] = indices[1] = low_index - 1; |
9144 | indices[2] = indices[3] = high_index + 1; | |
52ce6436 | 9145 | |
d3c54a1c TT |
9146 | std::get<0> (m_storage)->assign (container, lhs, exp, indices, |
9147 | low_index, high_index); | |
207582c0 TT |
9148 | |
9149 | return container; | |
d3c54a1c TT |
9150 | } |
9151 | ||
9152 | bool | |
9153 | ada_positional_component::uses_objfile (struct objfile *objfile) | |
9154 | { | |
9155 | return m_op->uses_objfile (objfile); | |
9156 | } | |
52ce6436 | 9157 | |
d3c54a1c TT |
9158 | void |
9159 | ada_positional_component::dump (ui_file *stream, int depth) | |
9160 | { | |
9161 | fprintf_filtered (stream, _("%*sPositional, index = %d\n"), | |
9162 | depth, "", m_index); | |
9163 | m_op->dump (stream, depth + 1); | |
52ce6436 | 9164 | } |
d3c54a1c | 9165 | |
52ce6436 | 9166 | /* Assign into the component of LHS indexed by the OP_POSITIONAL |
d3c54a1c TT |
9167 | construct, given that the positions are relative to lower bound |
9168 | LOW, where HIGH is the upper bound. Record the position in | |
9169 | INDICES. CONTAINER is as for assign_aggregate. */ | |
9170 | void | |
9171 | ada_positional_component::assign (struct value *container, | |
9172 | struct value *lhs, struct expression *exp, | |
9173 | std::vector<LONGEST> &indices, | |
9174 | LONGEST low, LONGEST high) | |
52ce6436 | 9175 | { |
d3c54a1c TT |
9176 | LONGEST ind = m_index + low; |
9177 | ||
52ce6436 | 9178 | if (ind - 1 == high) |
e1d5a0d2 | 9179 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
9180 | if (ind <= high) |
9181 | { | |
cf608cc4 | 9182 | add_component_interval (ind, ind, indices); |
d3c54a1c | 9183 | assign_component (container, lhs, ind, exp, m_op); |
52ce6436 | 9184 | } |
52ce6436 PH |
9185 | } |
9186 | ||
d3c54a1c TT |
9187 | bool |
9188 | ada_discrete_range_association::uses_objfile (struct objfile *objfile) | |
a88c4354 TT |
9189 | { |
9190 | return m_low->uses_objfile (objfile) || m_high->uses_objfile (objfile); | |
9191 | } | |
9192 | ||
9193 | void | |
9194 | ada_discrete_range_association::dump (ui_file *stream, int depth) | |
9195 | { | |
9196 | fprintf_filtered (stream, _("%*sDiscrete range:\n"), depth, ""); | |
9197 | m_low->dump (stream, depth + 1); | |
9198 | m_high->dump (stream, depth + 1); | |
9199 | } | |
9200 | ||
9201 | void | |
9202 | ada_discrete_range_association::assign (struct value *container, | |
9203 | struct value *lhs, | |
9204 | struct expression *exp, | |
9205 | std::vector<LONGEST> &indices, | |
9206 | LONGEST low, LONGEST high, | |
9207 | operation_up &op) | |
9208 | { | |
9209 | LONGEST lower = value_as_long (m_low->evaluate (nullptr, exp, EVAL_NORMAL)); | |
9210 | LONGEST upper = value_as_long (m_high->evaluate (nullptr, exp, EVAL_NORMAL)); | |
9211 | ||
9212 | if (lower <= upper && (lower < low || upper > high)) | |
9213 | error (_("Index in component association out of bounds.")); | |
9214 | ||
9215 | add_component_interval (lower, upper, indices); | |
9216 | while (lower <= upper) | |
9217 | { | |
9218 | assign_component (container, lhs, lower, exp, op); | |
9219 | lower += 1; | |
9220 | } | |
9221 | } | |
9222 | ||
9223 | bool | |
9224 | ada_name_association::uses_objfile (struct objfile *objfile) | |
9225 | { | |
9226 | return m_val->uses_objfile (objfile); | |
9227 | } | |
9228 | ||
9229 | void | |
9230 | ada_name_association::dump (ui_file *stream, int depth) | |
9231 | { | |
9232 | fprintf_filtered (stream, _("%*sName:\n"), depth, ""); | |
9233 | m_val->dump (stream, depth + 1); | |
9234 | } | |
9235 | ||
9236 | void | |
9237 | ada_name_association::assign (struct value *container, | |
9238 | struct value *lhs, | |
9239 | struct expression *exp, | |
9240 | std::vector<LONGEST> &indices, | |
9241 | LONGEST low, LONGEST high, | |
9242 | operation_up &op) | |
9243 | { | |
9244 | int index; | |
9245 | ||
9246 | if (ada_is_direct_array_type (value_type (lhs))) | |
9247 | index = longest_to_int (value_as_long (m_val->evaluate (nullptr, exp, | |
9248 | EVAL_NORMAL))); | |
9249 | else | |
9250 | { | |
9251 | ada_string_operation *strop | |
9252 | = dynamic_cast<ada_string_operation *> (m_val.get ()); | |
9253 | ||
9254 | const char *name; | |
9255 | if (strop != nullptr) | |
9256 | name = strop->get_name (); | |
9257 | else | |
9258 | { | |
9259 | ada_var_value_operation *vvo | |
9260 | = dynamic_cast<ada_var_value_operation *> (m_val.get ()); | |
9261 | if (vvo != nullptr) | |
9262 | error (_("Invalid record component association.")); | |
9263 | name = vvo->get_symbol ()->natural_name (); | |
9264 | } | |
9265 | ||
9266 | index = 0; | |
9267 | if (! find_struct_field (name, value_type (lhs), 0, | |
9268 | NULL, NULL, NULL, NULL, &index)) | |
9269 | error (_("Unknown component name: %s."), name); | |
9270 | } | |
9271 | ||
9272 | add_component_interval (index, index, indices); | |
9273 | assign_component (container, lhs, index, exp, op); | |
9274 | } | |
9275 | ||
9276 | bool | |
9277 | ada_choices_component::uses_objfile (struct objfile *objfile) | |
9278 | { | |
9279 | if (m_op->uses_objfile (objfile)) | |
9280 | return true; | |
9281 | for (const auto &item : m_assocs) | |
9282 | if (item->uses_objfile (objfile)) | |
9283 | return true; | |
9284 | return false; | |
9285 | } | |
9286 | ||
9287 | void | |
9288 | ada_choices_component::dump (ui_file *stream, int depth) | |
9289 | { | |
9290 | fprintf_filtered (stream, _("%*sChoices:\n"), depth, ""); | |
9291 | m_op->dump (stream, depth + 1); | |
9292 | for (const auto &item : m_assocs) | |
9293 | item->dump (stream, depth + 1); | |
9294 | } | |
9295 | ||
9296 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
9297 | construct at *POS, updating *POS past the construct, given that | |
9298 | the allowable indices are LOW..HIGH. Record the indices assigned | |
9299 | to in INDICES. CONTAINER is as for assign_aggregate. */ | |
9300 | void | |
9301 | ada_choices_component::assign (struct value *container, | |
9302 | struct value *lhs, struct expression *exp, | |
9303 | std::vector<LONGEST> &indices, | |
9304 | LONGEST low, LONGEST high) | |
9305 | { | |
9306 | for (auto &item : m_assocs) | |
9307 | item->assign (container, lhs, exp, indices, low, high, m_op); | |
9308 | } | |
9309 | ||
9310 | bool | |
9311 | ada_others_component::uses_objfile (struct objfile *objfile) | |
9312 | { | |
9313 | return m_op->uses_objfile (objfile); | |
9314 | } | |
9315 | ||
9316 | void | |
9317 | ada_others_component::dump (ui_file *stream, int depth) | |
9318 | { | |
9319 | fprintf_filtered (stream, _("%*sOthers:\n"), depth, ""); | |
9320 | m_op->dump (stream, depth + 1); | |
9321 | } | |
9322 | ||
9323 | /* Assign the value of the expression in the OP_OTHERS construct in | |
9324 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
9325 | have not been previously assigned. The index intervals already assigned | |
9326 | are in INDICES. CONTAINER is as for assign_aggregate. */ | |
9327 | void | |
9328 | ada_others_component::assign (struct value *container, | |
9329 | struct value *lhs, struct expression *exp, | |
9330 | std::vector<LONGEST> &indices, | |
9331 | LONGEST low, LONGEST high) | |
9332 | { | |
9333 | int num_indices = indices.size (); | |
9334 | for (int i = 0; i < num_indices - 2; i += 2) | |
9335 | { | |
9336 | for (LONGEST ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
9337 | assign_component (container, lhs, ind, exp, m_op); | |
9338 | } | |
9339 | } | |
9340 | ||
9341 | struct value * | |
9342 | ada_assign_operation::evaluate (struct type *expect_type, | |
9343 | struct expression *exp, | |
9344 | enum noside noside) | |
9345 | { | |
9346 | value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
9347 | ||
9348 | ada_aggregate_operation *ag_op | |
9349 | = dynamic_cast<ada_aggregate_operation *> (std::get<1> (m_storage).get ()); | |
9350 | if (ag_op != nullptr) | |
9351 | { | |
9352 | if (noside != EVAL_NORMAL) | |
9353 | return arg1; | |
9354 | ||
207582c0 | 9355 | arg1 = ag_op->assign_aggregate (arg1, arg1, exp); |
a88c4354 TT |
9356 | return ada_value_assign (arg1, arg1); |
9357 | } | |
9358 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, | |
9359 | except if the lhs of our assignment is a convenience variable. | |
9360 | In the case of assigning to a convenience variable, the lhs | |
9361 | should be exactly the result of the evaluation of the rhs. */ | |
9362 | struct type *type = value_type (arg1); | |
9363 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
9364 | type = NULL; | |
9365 | value *arg2 = std::get<1> (m_storage)->evaluate (type, exp, noside); | |
0b2b0b82 | 9366 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a88c4354 TT |
9367 | return arg1; |
9368 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
9369 | { | |
9370 | /* Nothing. */ | |
9371 | } | |
9372 | else | |
9373 | arg2 = coerce_for_assign (value_type (arg1), arg2); | |
9374 | return ada_value_assign (arg1, arg2); | |
9375 | } | |
9376 | ||
9377 | } /* namespace expr */ | |
9378 | ||
cf608cc4 TT |
9379 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals |
9380 | [ INDICES[0] .. INDICES[1] ],... The resulting intervals do not | |
9381 | overlap. */ | |
52ce6436 PH |
9382 | static void |
9383 | add_component_interval (LONGEST low, LONGEST high, | |
cf608cc4 | 9384 | std::vector<LONGEST> &indices) |
52ce6436 PH |
9385 | { |
9386 | int i, j; | |
5b4ee69b | 9387 | |
cf608cc4 TT |
9388 | int size = indices.size (); |
9389 | for (i = 0; i < size; i += 2) { | |
52ce6436 PH |
9390 | if (high >= indices[i] && low <= indices[i + 1]) |
9391 | { | |
9392 | int kh; | |
5b4ee69b | 9393 | |
cf608cc4 | 9394 | for (kh = i + 2; kh < size; kh += 2) |
52ce6436 PH |
9395 | if (high < indices[kh]) |
9396 | break; | |
9397 | if (low < indices[i]) | |
9398 | indices[i] = low; | |
9399 | indices[i + 1] = indices[kh - 1]; | |
9400 | if (high > indices[i + 1]) | |
9401 | indices[i + 1] = high; | |
cf608cc4 TT |
9402 | memcpy (indices.data () + i + 2, indices.data () + kh, size - kh); |
9403 | indices.resize (kh - i - 2); | |
52ce6436 PH |
9404 | return; |
9405 | } | |
9406 | else if (high < indices[i]) | |
9407 | break; | |
9408 | } | |
9409 | ||
cf608cc4 | 9410 | indices.resize (indices.size () + 2); |
d4813f10 | 9411 | for (j = indices.size () - 1; j >= i + 2; j -= 1) |
52ce6436 PH |
9412 | indices[j] = indices[j - 2]; |
9413 | indices[i] = low; | |
9414 | indices[i + 1] = high; | |
9415 | } | |
9416 | ||
6e48bd2c JB |
9417 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
9418 | is different. */ | |
9419 | ||
9420 | static struct value * | |
b7e22850 | 9421 | ada_value_cast (struct type *type, struct value *arg2) |
6e48bd2c JB |
9422 | { |
9423 | if (type == ada_check_typedef (value_type (arg2))) | |
9424 | return arg2; | |
9425 | ||
6e48bd2c JB |
9426 | return value_cast (type, arg2); |
9427 | } | |
9428 | ||
284614f0 JB |
9429 | /* Evaluating Ada expressions, and printing their result. |
9430 | ------------------------------------------------------ | |
9431 | ||
21649b50 JB |
9432 | 1. Introduction: |
9433 | ---------------- | |
9434 | ||
284614f0 JB |
9435 | We usually evaluate an Ada expression in order to print its value. |
9436 | We also evaluate an expression in order to print its type, which | |
9437 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
9438 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
9439 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
9440 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
9441 | similar. | |
9442 | ||
9443 | Evaluating expressions is a little more complicated for Ada entities | |
9444 | than it is for entities in languages such as C. The main reason for | |
9445 | this is that Ada provides types whose definition might be dynamic. | |
9446 | One example of such types is variant records. Or another example | |
9447 | would be an array whose bounds can only be known at run time. | |
9448 | ||
9449 | The following description is a general guide as to what should be | |
9450 | done (and what should NOT be done) in order to evaluate an expression | |
9451 | involving such types, and when. This does not cover how the semantic | |
9452 | information is encoded by GNAT as this is covered separatly. For the | |
9453 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
9454 | in the GNAT sources. | |
9455 | ||
9456 | Ideally, we should embed each part of this description next to its | |
9457 | associated code. Unfortunately, the amount of code is so vast right | |
9458 | now that it's hard to see whether the code handling a particular | |
9459 | situation might be duplicated or not. One day, when the code is | |
9460 | cleaned up, this guide might become redundant with the comments | |
9461 | inserted in the code, and we might want to remove it. | |
9462 | ||
21649b50 JB |
9463 | 2. ``Fixing'' an Entity, the Simple Case: |
9464 | ----------------------------------------- | |
9465 | ||
284614f0 JB |
9466 | When evaluating Ada expressions, the tricky issue is that they may |
9467 | reference entities whose type contents and size are not statically | |
9468 | known. Consider for instance a variant record: | |
9469 | ||
9470 | type Rec (Empty : Boolean := True) is record | |
dda83cd7 SM |
9471 | case Empty is |
9472 | when True => null; | |
9473 | when False => Value : Integer; | |
9474 | end case; | |
284614f0 JB |
9475 | end record; |
9476 | Yes : Rec := (Empty => False, Value => 1); | |
9477 | No : Rec := (empty => True); | |
9478 | ||
9479 | The size and contents of that record depends on the value of the | |
9480 | descriminant (Rec.Empty). At this point, neither the debugging | |
9481 | information nor the associated type structure in GDB are able to | |
9482 | express such dynamic types. So what the debugger does is to create | |
9483 | "fixed" versions of the type that applies to the specific object. | |
30baf67b | 9484 | We also informally refer to this operation as "fixing" an object, |
284614f0 JB |
9485 | which means creating its associated fixed type. |
9486 | ||
9487 | Example: when printing the value of variable "Yes" above, its fixed | |
9488 | type would look like this: | |
9489 | ||
9490 | type Rec is record | |
dda83cd7 SM |
9491 | Empty : Boolean; |
9492 | Value : Integer; | |
284614f0 JB |
9493 | end record; |
9494 | ||
9495 | On the other hand, if we printed the value of "No", its fixed type | |
9496 | would become: | |
9497 | ||
9498 | type Rec is record | |
dda83cd7 | 9499 | Empty : Boolean; |
284614f0 JB |
9500 | end record; |
9501 | ||
9502 | Things become a little more complicated when trying to fix an entity | |
9503 | with a dynamic type that directly contains another dynamic type, | |
9504 | such as an array of variant records, for instance. There are | |
9505 | two possible cases: Arrays, and records. | |
9506 | ||
21649b50 JB |
9507 | 3. ``Fixing'' Arrays: |
9508 | --------------------- | |
9509 | ||
9510 | The type structure in GDB describes an array in terms of its bounds, | |
9511 | and the type of its elements. By design, all elements in the array | |
9512 | have the same type and we cannot represent an array of variant elements | |
9513 | using the current type structure in GDB. When fixing an array, | |
9514 | we cannot fix the array element, as we would potentially need one | |
9515 | fixed type per element of the array. As a result, the best we can do | |
9516 | when fixing an array is to produce an array whose bounds and size | |
9517 | are correct (allowing us to read it from memory), but without having | |
9518 | touched its element type. Fixing each element will be done later, | |
9519 | when (if) necessary. | |
9520 | ||
9521 | Arrays are a little simpler to handle than records, because the same | |
9522 | amount of memory is allocated for each element of the array, even if | |
1b536f04 | 9523 | the amount of space actually used by each element differs from element |
21649b50 | 9524 | to element. Consider for instance the following array of type Rec: |
284614f0 JB |
9525 | |
9526 | type Rec_Array is array (1 .. 2) of Rec; | |
9527 | ||
1b536f04 JB |
9528 | The actual amount of memory occupied by each element might be different |
9529 | from element to element, depending on the value of their discriminant. | |
21649b50 | 9530 | But the amount of space reserved for each element in the array remains |
1b536f04 | 9531 | fixed regardless. So we simply need to compute that size using |
21649b50 JB |
9532 | the debugging information available, from which we can then determine |
9533 | the array size (we multiply the number of elements of the array by | |
9534 | the size of each element). | |
9535 | ||
9536 | The simplest case is when we have an array of a constrained element | |
9537 | type. For instance, consider the following type declarations: | |
9538 | ||
dda83cd7 SM |
9539 | type Bounded_String (Max_Size : Integer) is |
9540 | Length : Integer; | |
9541 | Buffer : String (1 .. Max_Size); | |
9542 | end record; | |
9543 | type Bounded_String_Array is array (1 ..2) of Bounded_String (80); | |
21649b50 JB |
9544 | |
9545 | In this case, the compiler describes the array as an array of | |
9546 | variable-size elements (identified by its XVS suffix) for which | |
9547 | the size can be read in the parallel XVZ variable. | |
9548 | ||
9549 | In the case of an array of an unconstrained element type, the compiler | |
9550 | wraps the array element inside a private PAD type. This type should not | |
9551 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
284614f0 JB |
9552 | that we also use the adjective "aligner" in our code to designate |
9553 | these wrapper types. | |
9554 | ||
1b536f04 | 9555 | In some cases, the size allocated for each element is statically |
21649b50 JB |
9556 | known. In that case, the PAD type already has the correct size, |
9557 | and the array element should remain unfixed. | |
9558 | ||
9559 | But there are cases when this size is not statically known. | |
9560 | For instance, assuming that "Five" is an integer variable: | |
284614f0 | 9561 | |
dda83cd7 SM |
9562 | type Dynamic is array (1 .. Five) of Integer; |
9563 | type Wrapper (Has_Length : Boolean := False) is record | |
9564 | Data : Dynamic; | |
9565 | case Has_Length is | |
9566 | when True => Length : Integer; | |
9567 | when False => null; | |
9568 | end case; | |
9569 | end record; | |
9570 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
284614f0 | 9571 | |
dda83cd7 SM |
9572 | Hello : Wrapper_Array := (others => (Has_Length => True, |
9573 | Data => (others => 17), | |
9574 | Length => 1)); | |
284614f0 JB |
9575 | |
9576 | ||
9577 | The debugging info would describe variable Hello as being an | |
9578 | array of a PAD type. The size of that PAD type is not statically | |
9579 | known, but can be determined using a parallel XVZ variable. | |
9580 | In that case, a copy of the PAD type with the correct size should | |
9581 | be used for the fixed array. | |
9582 | ||
21649b50 JB |
9583 | 3. ``Fixing'' record type objects: |
9584 | ---------------------------------- | |
9585 | ||
9586 | Things are slightly different from arrays in the case of dynamic | |
284614f0 JB |
9587 | record types. In this case, in order to compute the associated |
9588 | fixed type, we need to determine the size and offset of each of | |
9589 | its components. This, in turn, requires us to compute the fixed | |
9590 | type of each of these components. | |
9591 | ||
9592 | Consider for instance the example: | |
9593 | ||
dda83cd7 SM |
9594 | type Bounded_String (Max_Size : Natural) is record |
9595 | Str : String (1 .. Max_Size); | |
9596 | Length : Natural; | |
9597 | end record; | |
9598 | My_String : Bounded_String (Max_Size => 10); | |
284614f0 JB |
9599 | |
9600 | In that case, the position of field "Length" depends on the size | |
9601 | of field Str, which itself depends on the value of the Max_Size | |
21649b50 | 9602 | discriminant. In order to fix the type of variable My_String, |
284614f0 JB |
9603 | we need to fix the type of field Str. Therefore, fixing a variant |
9604 | record requires us to fix each of its components. | |
9605 | ||
9606 | However, if a component does not have a dynamic size, the component | |
9607 | should not be fixed. In particular, fields that use a PAD type | |
9608 | should not fixed. Here is an example where this might happen | |
9609 | (assuming type Rec above): | |
9610 | ||
9611 | type Container (Big : Boolean) is record | |
dda83cd7 SM |
9612 | First : Rec; |
9613 | After : Integer; | |
9614 | case Big is | |
9615 | when True => Another : Integer; | |
9616 | when False => null; | |
9617 | end case; | |
284614f0 JB |
9618 | end record; |
9619 | My_Container : Container := (Big => False, | |
dda83cd7 SM |
9620 | First => (Empty => True), |
9621 | After => 42); | |
284614f0 JB |
9622 | |
9623 | In that example, the compiler creates a PAD type for component First, | |
9624 | whose size is constant, and then positions the component After just | |
9625 | right after it. The offset of component After is therefore constant | |
9626 | in this case. | |
9627 | ||
9628 | The debugger computes the position of each field based on an algorithm | |
9629 | that uses, among other things, the actual position and size of the field | |
21649b50 JB |
9630 | preceding it. Let's now imagine that the user is trying to print |
9631 | the value of My_Container. If the type fixing was recursive, we would | |
284614f0 JB |
9632 | end up computing the offset of field After based on the size of the |
9633 | fixed version of field First. And since in our example First has | |
9634 | only one actual field, the size of the fixed type is actually smaller | |
9635 | than the amount of space allocated to that field, and thus we would | |
9636 | compute the wrong offset of field After. | |
9637 | ||
21649b50 JB |
9638 | To make things more complicated, we need to watch out for dynamic |
9639 | components of variant records (identified by the ___XVL suffix in | |
9640 | the component name). Even if the target type is a PAD type, the size | |
9641 | of that type might not be statically known. So the PAD type needs | |
9642 | to be unwrapped and the resulting type needs to be fixed. Otherwise, | |
9643 | we might end up with the wrong size for our component. This can be | |
9644 | observed with the following type declarations: | |
284614f0 | 9645 | |
dda83cd7 SM |
9646 | type Octal is new Integer range 0 .. 7; |
9647 | type Octal_Array is array (Positive range <>) of Octal; | |
9648 | pragma Pack (Octal_Array); | |
284614f0 | 9649 | |
dda83cd7 SM |
9650 | type Octal_Buffer (Size : Positive) is record |
9651 | Buffer : Octal_Array (1 .. Size); | |
9652 | Length : Integer; | |
9653 | end record; | |
284614f0 JB |
9654 | |
9655 | In that case, Buffer is a PAD type whose size is unset and needs | |
9656 | to be computed by fixing the unwrapped type. | |
9657 | ||
21649b50 JB |
9658 | 4. When to ``Fix'' un-``Fixed'' sub-elements of an entity: |
9659 | ---------------------------------------------------------- | |
9660 | ||
9661 | Lastly, when should the sub-elements of an entity that remained unfixed | |
284614f0 JB |
9662 | thus far, be actually fixed? |
9663 | ||
9664 | The answer is: Only when referencing that element. For instance | |
9665 | when selecting one component of a record, this specific component | |
9666 | should be fixed at that point in time. Or when printing the value | |
9667 | of a record, each component should be fixed before its value gets | |
9668 | printed. Similarly for arrays, the element of the array should be | |
9669 | fixed when printing each element of the array, or when extracting | |
9670 | one element out of that array. On the other hand, fixing should | |
9671 | not be performed on the elements when taking a slice of an array! | |
9672 | ||
31432a67 | 9673 | Note that one of the side effects of miscomputing the offset and |
284614f0 JB |
9674 | size of each field is that we end up also miscomputing the size |
9675 | of the containing type. This can have adverse results when computing | |
9676 | the value of an entity. GDB fetches the value of an entity based | |
9677 | on the size of its type, and thus a wrong size causes GDB to fetch | |
9678 | the wrong amount of memory. In the case where the computed size is | |
9679 | too small, GDB fetches too little data to print the value of our | |
31432a67 | 9680 | entity. Results in this case are unpredictable, as we usually read |
284614f0 JB |
9681 | past the buffer containing the data =:-o. */ |
9682 | ||
62d4bd94 TT |
9683 | /* A helper function for TERNOP_IN_RANGE. */ |
9684 | ||
9685 | static value * | |
9686 | eval_ternop_in_range (struct type *expect_type, struct expression *exp, | |
9687 | enum noside noside, | |
9688 | value *arg1, value *arg2, value *arg3) | |
9689 | { | |
62d4bd94 TT |
9690 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
9691 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
9692 | struct type *type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9693 | return | |
9694 | value_from_longest (type, | |
9695 | (value_less (arg1, arg3) | |
9696 | || value_equal (arg1, arg3)) | |
9697 | && (value_less (arg2, arg1) | |
9698 | || value_equal (arg2, arg1))); | |
9699 | } | |
9700 | ||
82390ab8 TT |
9701 | /* A helper function for UNOP_NEG. */ |
9702 | ||
7c15d377 | 9703 | value * |
82390ab8 TT |
9704 | ada_unop_neg (struct type *expect_type, |
9705 | struct expression *exp, | |
9706 | enum noside noside, enum exp_opcode op, | |
9707 | struct value *arg1) | |
9708 | { | |
82390ab8 TT |
9709 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
9710 | return value_neg (arg1); | |
9711 | } | |
9712 | ||
7efc87ff TT |
9713 | /* A helper function for UNOP_IN_RANGE. */ |
9714 | ||
95d49dfb | 9715 | value * |
7efc87ff TT |
9716 | ada_unop_in_range (struct type *expect_type, |
9717 | struct expression *exp, | |
9718 | enum noside noside, enum exp_opcode op, | |
9719 | struct value *arg1, struct type *type) | |
9720 | { | |
7efc87ff TT |
9721 | struct value *arg2, *arg3; |
9722 | switch (type->code ()) | |
9723 | { | |
9724 | default: | |
9725 | lim_warning (_("Membership test incompletely implemented; " | |
9726 | "always returns true")); | |
9727 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9728 | return value_from_longest (type, (LONGEST) 1); | |
9729 | ||
9730 | case TYPE_CODE_RANGE: | |
9731 | arg2 = value_from_longest (type, | |
9732 | type->bounds ()->low.const_val ()); | |
9733 | arg3 = value_from_longest (type, | |
9734 | type->bounds ()->high.const_val ()); | |
9735 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9736 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
9737 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9738 | return | |
9739 | value_from_longest (type, | |
9740 | (value_less (arg1, arg3) | |
9741 | || value_equal (arg1, arg3)) | |
9742 | && (value_less (arg2, arg1) | |
9743 | || value_equal (arg2, arg1))); | |
9744 | } | |
9745 | } | |
9746 | ||
020dbabe TT |
9747 | /* A helper function for OP_ATR_TAG. */ |
9748 | ||
7c15d377 | 9749 | value * |
020dbabe TT |
9750 | ada_atr_tag (struct type *expect_type, |
9751 | struct expression *exp, | |
9752 | enum noside noside, enum exp_opcode op, | |
9753 | struct value *arg1) | |
9754 | { | |
9755 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9756 | return value_zero (ada_tag_type (arg1), not_lval); | |
9757 | ||
9758 | return ada_value_tag (arg1); | |
9759 | } | |
9760 | ||
68c75735 TT |
9761 | /* A helper function for OP_ATR_SIZE. */ |
9762 | ||
7c15d377 | 9763 | value * |
68c75735 TT |
9764 | ada_atr_size (struct type *expect_type, |
9765 | struct expression *exp, | |
9766 | enum noside noside, enum exp_opcode op, | |
9767 | struct value *arg1) | |
9768 | { | |
9769 | struct type *type = value_type (arg1); | |
9770 | ||
9771 | /* If the argument is a reference, then dereference its type, since | |
9772 | the user is really asking for the size of the actual object, | |
9773 | not the size of the pointer. */ | |
9774 | if (type->code () == TYPE_CODE_REF) | |
9775 | type = TYPE_TARGET_TYPE (type); | |
9776 | ||
0b2b0b82 | 9777 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
68c75735 TT |
9778 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
9779 | else | |
9780 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, | |
9781 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); | |
9782 | } | |
9783 | ||
d05e24e6 TT |
9784 | /* A helper function for UNOP_ABS. */ |
9785 | ||
7c15d377 | 9786 | value * |
d05e24e6 TT |
9787 | ada_abs (struct type *expect_type, |
9788 | struct expression *exp, | |
9789 | enum noside noside, enum exp_opcode op, | |
9790 | struct value *arg1) | |
9791 | { | |
9792 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
9793 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) | |
9794 | return value_neg (arg1); | |
9795 | else | |
9796 | return arg1; | |
9797 | } | |
9798 | ||
faa1dfd7 TT |
9799 | /* A helper function for BINOP_MUL. */ |
9800 | ||
d9e7db06 | 9801 | value * |
faa1dfd7 TT |
9802 | ada_mult_binop (struct type *expect_type, |
9803 | struct expression *exp, | |
9804 | enum noside noside, enum exp_opcode op, | |
9805 | struct value *arg1, struct value *arg2) | |
9806 | { | |
9807 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9808 | { | |
9809 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9810 | return value_zero (value_type (arg1), not_lval); | |
9811 | } | |
9812 | else | |
9813 | { | |
9814 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9815 | return ada_value_binop (arg1, arg2, op); | |
9816 | } | |
9817 | } | |
9818 | ||
214b13ac TT |
9819 | /* A helper function for BINOP_EQUAL and BINOP_NOTEQUAL. */ |
9820 | ||
6e8fb7b7 | 9821 | value * |
214b13ac TT |
9822 | ada_equal_binop (struct type *expect_type, |
9823 | struct expression *exp, | |
9824 | enum noside noside, enum exp_opcode op, | |
9825 | struct value *arg1, struct value *arg2) | |
9826 | { | |
9827 | int tem; | |
9828 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9829 | tem = 0; | |
9830 | else | |
9831 | { | |
9832 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9833 | tem = ada_value_equal (arg1, arg2); | |
9834 | } | |
9835 | if (op == BINOP_NOTEQUAL) | |
9836 | tem = !tem; | |
9837 | struct type *type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9838 | return value_from_longest (type, (LONGEST) tem); | |
9839 | } | |
9840 | ||
5ce19db8 TT |
9841 | /* A helper function for TERNOP_SLICE. */ |
9842 | ||
1b1ebfab | 9843 | value * |
5ce19db8 TT |
9844 | ada_ternop_slice (struct expression *exp, |
9845 | enum noside noside, | |
9846 | struct value *array, struct value *low_bound_val, | |
9847 | struct value *high_bound_val) | |
9848 | { | |
9849 | LONGEST low_bound; | |
9850 | LONGEST high_bound; | |
9851 | ||
9852 | low_bound_val = coerce_ref (low_bound_val); | |
9853 | high_bound_val = coerce_ref (high_bound_val); | |
9854 | low_bound = value_as_long (low_bound_val); | |
9855 | high_bound = value_as_long (high_bound_val); | |
9856 | ||
9857 | /* If this is a reference to an aligner type, then remove all | |
9858 | the aligners. */ | |
9859 | if (value_type (array)->code () == TYPE_CODE_REF | |
9860 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
9861 | TYPE_TARGET_TYPE (value_type (array)) = | |
9862 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
9863 | ||
9864 | if (ada_is_any_packed_array_type (value_type (array))) | |
9865 | error (_("cannot slice a packed array")); | |
9866 | ||
9867 | /* If this is a reference to an array or an array lvalue, | |
9868 | convert to a pointer. */ | |
9869 | if (value_type (array)->code () == TYPE_CODE_REF | |
9870 | || (value_type (array)->code () == TYPE_CODE_ARRAY | |
9871 | && VALUE_LVAL (array) == lval_memory)) | |
9872 | array = value_addr (array); | |
9873 | ||
9874 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
9875 | && ada_is_array_descriptor_type (ada_check_typedef | |
9876 | (value_type (array)))) | |
9877 | return empty_array (ada_type_of_array (array, 0), low_bound, | |
9878 | high_bound); | |
9879 | ||
9880 | array = ada_coerce_to_simple_array_ptr (array); | |
9881 | ||
9882 | /* If we have more than one level of pointer indirection, | |
9883 | dereference the value until we get only one level. */ | |
9884 | while (value_type (array)->code () == TYPE_CODE_PTR | |
9885 | && (TYPE_TARGET_TYPE (value_type (array))->code () | |
9886 | == TYPE_CODE_PTR)) | |
9887 | array = value_ind (array); | |
9888 | ||
9889 | /* Make sure we really do have an array type before going further, | |
9890 | to avoid a SEGV when trying to get the index type or the target | |
9891 | type later down the road if the debug info generated by | |
9892 | the compiler is incorrect or incomplete. */ | |
9893 | if (!ada_is_simple_array_type (value_type (array))) | |
9894 | error (_("cannot take slice of non-array")); | |
9895 | ||
9896 | if (ada_check_typedef (value_type (array))->code () | |
9897 | == TYPE_CODE_PTR) | |
9898 | { | |
9899 | struct type *type0 = ada_check_typedef (value_type (array)); | |
9900 | ||
9901 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) | |
9902 | return empty_array (TYPE_TARGET_TYPE (type0), low_bound, high_bound); | |
9903 | else | |
9904 | { | |
9905 | struct type *arr_type0 = | |
9906 | to_fixed_array_type (TYPE_TARGET_TYPE (type0), NULL, 1); | |
9907 | ||
9908 | return ada_value_slice_from_ptr (array, arr_type0, | |
9909 | longest_to_int (low_bound), | |
9910 | longest_to_int (high_bound)); | |
9911 | } | |
9912 | } | |
9913 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9914 | return array; | |
9915 | else if (high_bound < low_bound) | |
9916 | return empty_array (value_type (array), low_bound, high_bound); | |
9917 | else | |
9918 | return ada_value_slice (array, longest_to_int (low_bound), | |
9919 | longest_to_int (high_bound)); | |
9920 | } | |
9921 | ||
b467efaa TT |
9922 | /* A helper function for BINOP_IN_BOUNDS. */ |
9923 | ||
82c3886e | 9924 | value * |
b467efaa TT |
9925 | ada_binop_in_bounds (struct expression *exp, enum noside noside, |
9926 | struct value *arg1, struct value *arg2, int n) | |
9927 | { | |
9928 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9929 | { | |
9930 | struct type *type = language_bool_type (exp->language_defn, | |
9931 | exp->gdbarch); | |
9932 | return value_zero (type, not_lval); | |
9933 | } | |
9934 | ||
9935 | struct type *type = ada_index_type (value_type (arg2), n, "range"); | |
9936 | if (!type) | |
9937 | type = value_type (arg1); | |
9938 | ||
9939 | value *arg3 = value_from_longest (type, ada_array_bound (arg2, n, 1)); | |
9940 | arg2 = value_from_longest (type, ada_array_bound (arg2, n, 0)); | |
9941 | ||
9942 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9943 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
9944 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9945 | return value_from_longest (type, | |
9946 | (value_less (arg1, arg3) | |
9947 | || value_equal (arg1, arg3)) | |
9948 | && (value_less (arg2, arg1) | |
9949 | || value_equal (arg2, arg1))); | |
9950 | } | |
9951 | ||
b84564fc TT |
9952 | /* A helper function for some attribute operations. */ |
9953 | ||
9954 | static value * | |
9955 | ada_unop_atr (struct expression *exp, enum noside noside, enum exp_opcode op, | |
9956 | struct value *arg1, struct type *type_arg, int tem) | |
9957 | { | |
9958 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9959 | { | |
9960 | if (type_arg == NULL) | |
9961 | type_arg = value_type (arg1); | |
9962 | ||
9963 | if (ada_is_constrained_packed_array_type (type_arg)) | |
9964 | type_arg = decode_constrained_packed_array_type (type_arg); | |
9965 | ||
9966 | if (!discrete_type_p (type_arg)) | |
9967 | { | |
9968 | switch (op) | |
9969 | { | |
9970 | default: /* Should never happen. */ | |
9971 | error (_("unexpected attribute encountered")); | |
9972 | case OP_ATR_FIRST: | |
9973 | case OP_ATR_LAST: | |
9974 | type_arg = ada_index_type (type_arg, tem, | |
9975 | ada_attribute_name (op)); | |
9976 | break; | |
9977 | case OP_ATR_LENGTH: | |
9978 | type_arg = builtin_type (exp->gdbarch)->builtin_int; | |
9979 | break; | |
9980 | } | |
9981 | } | |
9982 | ||
9983 | return value_zero (type_arg, not_lval); | |
9984 | } | |
9985 | else if (type_arg == NULL) | |
9986 | { | |
9987 | arg1 = ada_coerce_ref (arg1); | |
9988 | ||
9989 | if (ada_is_constrained_packed_array_type (value_type (arg1))) | |
9990 | arg1 = ada_coerce_to_simple_array (arg1); | |
9991 | ||
9992 | struct type *type; | |
9993 | if (op == OP_ATR_LENGTH) | |
9994 | type = builtin_type (exp->gdbarch)->builtin_int; | |
9995 | else | |
9996 | { | |
9997 | type = ada_index_type (value_type (arg1), tem, | |
9998 | ada_attribute_name (op)); | |
9999 | if (type == NULL) | |
10000 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10001 | } | |
10002 | ||
10003 | switch (op) | |
10004 | { | |
10005 | default: /* Should never happen. */ | |
10006 | error (_("unexpected attribute encountered")); | |
10007 | case OP_ATR_FIRST: | |
10008 | return value_from_longest | |
10009 | (type, ada_array_bound (arg1, tem, 0)); | |
10010 | case OP_ATR_LAST: | |
10011 | return value_from_longest | |
10012 | (type, ada_array_bound (arg1, tem, 1)); | |
10013 | case OP_ATR_LENGTH: | |
10014 | return value_from_longest | |
10015 | (type, ada_array_length (arg1, tem)); | |
10016 | } | |
10017 | } | |
10018 | else if (discrete_type_p (type_arg)) | |
10019 | { | |
10020 | struct type *range_type; | |
10021 | const char *name = ada_type_name (type_arg); | |
10022 | ||
10023 | range_type = NULL; | |
10024 | if (name != NULL && type_arg->code () != TYPE_CODE_ENUM) | |
10025 | range_type = to_fixed_range_type (type_arg, NULL); | |
10026 | if (range_type == NULL) | |
10027 | range_type = type_arg; | |
10028 | switch (op) | |
10029 | { | |
10030 | default: | |
10031 | error (_("unexpected attribute encountered")); | |
10032 | case OP_ATR_FIRST: | |
10033 | return value_from_longest | |
10034 | (range_type, ada_discrete_type_low_bound (range_type)); | |
10035 | case OP_ATR_LAST: | |
10036 | return value_from_longest | |
10037 | (range_type, ada_discrete_type_high_bound (range_type)); | |
10038 | case OP_ATR_LENGTH: | |
10039 | error (_("the 'length attribute applies only to array types")); | |
10040 | } | |
10041 | } | |
10042 | else if (type_arg->code () == TYPE_CODE_FLT) | |
10043 | error (_("unimplemented type attribute")); | |
10044 | else | |
10045 | { | |
10046 | LONGEST low, high; | |
10047 | ||
10048 | if (ada_is_constrained_packed_array_type (type_arg)) | |
10049 | type_arg = decode_constrained_packed_array_type (type_arg); | |
10050 | ||
10051 | struct type *type; | |
10052 | if (op == OP_ATR_LENGTH) | |
10053 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10054 | else | |
10055 | { | |
10056 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); | |
10057 | if (type == NULL) | |
10058 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10059 | } | |
10060 | ||
10061 | switch (op) | |
10062 | { | |
10063 | default: | |
10064 | error (_("unexpected attribute encountered")); | |
10065 | case OP_ATR_FIRST: | |
10066 | low = ada_array_bound_from_type (type_arg, tem, 0); | |
10067 | return value_from_longest (type, low); | |
10068 | case OP_ATR_LAST: | |
10069 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
10070 | return value_from_longest (type, high); | |
10071 | case OP_ATR_LENGTH: | |
10072 | low = ada_array_bound_from_type (type_arg, tem, 0); | |
10073 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
10074 | return value_from_longest (type, high - low + 1); | |
10075 | } | |
10076 | } | |
10077 | } | |
10078 | ||
38dc70cf TT |
10079 | /* A helper function for OP_ATR_MIN and OP_ATR_MAX. */ |
10080 | ||
6ad3b8bf | 10081 | struct value * |
38dc70cf TT |
10082 | ada_binop_minmax (struct type *expect_type, |
10083 | struct expression *exp, | |
10084 | enum noside noside, enum exp_opcode op, | |
10085 | struct value *arg1, struct value *arg2) | |
10086 | { | |
10087 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10088 | return value_zero (value_type (arg1), not_lval); | |
10089 | else | |
10090 | { | |
10091 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
0922dc84 | 10092 | return value_binop (arg1, arg2, op); |
38dc70cf TT |
10093 | } |
10094 | } | |
10095 | ||
dd5fd283 TT |
10096 | /* A helper function for BINOP_EXP. */ |
10097 | ||
065ec826 | 10098 | struct value * |
dd5fd283 TT |
10099 | ada_binop_exp (struct type *expect_type, |
10100 | struct expression *exp, | |
10101 | enum noside noside, enum exp_opcode op, | |
10102 | struct value *arg1, struct value *arg2) | |
10103 | { | |
10104 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10105 | return value_zero (value_type (arg1), not_lval); | |
10106 | else | |
10107 | { | |
10108 | /* For integer exponentiation operations, | |
10109 | only promote the first argument. */ | |
10110 | if (is_integral_type (value_type (arg2))) | |
10111 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10112 | else | |
10113 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10114 | ||
10115 | return value_binop (arg1, arg2, op); | |
10116 | } | |
10117 | } | |
10118 | ||
03070ee9 TT |
10119 | namespace expr |
10120 | { | |
10121 | ||
10122 | value * | |
10123 | ada_wrapped_operation::evaluate (struct type *expect_type, | |
10124 | struct expression *exp, | |
10125 | enum noside noside) | |
10126 | { | |
10127 | value *result = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); | |
10128 | if (noside == EVAL_NORMAL) | |
10129 | result = unwrap_value (result); | |
10130 | ||
10131 | /* If evaluating an OP_FLOAT and an EXPECT_TYPE was provided, | |
10132 | then we need to perform the conversion manually, because | |
10133 | evaluate_subexp_standard doesn't do it. This conversion is | |
10134 | necessary in Ada because the different kinds of float/fixed | |
10135 | types in Ada have different representations. | |
10136 | ||
10137 | Similarly, we need to perform the conversion from OP_LONG | |
10138 | ourselves. */ | |
10139 | if ((opcode () == OP_FLOAT || opcode () == OP_LONG) && expect_type != NULL) | |
10140 | result = ada_value_cast (expect_type, result); | |
10141 | ||
10142 | return result; | |
10143 | } | |
10144 | ||
42fecb61 TT |
10145 | value * |
10146 | ada_string_operation::evaluate (struct type *expect_type, | |
10147 | struct expression *exp, | |
10148 | enum noside noside) | |
10149 | { | |
10150 | value *result = string_operation::evaluate (expect_type, exp, noside); | |
10151 | /* The result type will have code OP_STRING, bashed there from | |
10152 | OP_ARRAY. Bash it back. */ | |
10153 | if (value_type (result)->code () == TYPE_CODE_STRING) | |
10154 | value_type (result)->set_code (TYPE_CODE_ARRAY); | |
10155 | return result; | |
10156 | } | |
10157 | ||
cc6bd32e TT |
10158 | value * |
10159 | ada_qual_operation::evaluate (struct type *expect_type, | |
10160 | struct expression *exp, | |
10161 | enum noside noside) | |
10162 | { | |
10163 | struct type *type = std::get<1> (m_storage); | |
10164 | return std::get<0> (m_storage)->evaluate (type, exp, noside); | |
10165 | } | |
10166 | ||
fc715eb2 TT |
10167 | value * |
10168 | ada_ternop_range_operation::evaluate (struct type *expect_type, | |
10169 | struct expression *exp, | |
10170 | enum noside noside) | |
10171 | { | |
10172 | value *arg0 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
10173 | value *arg1 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); | |
10174 | value *arg2 = std::get<2> (m_storage)->evaluate (nullptr, exp, noside); | |
10175 | return eval_ternop_in_range (expect_type, exp, noside, arg0, arg1, arg2); | |
10176 | } | |
10177 | ||
73796c73 TT |
10178 | value * |
10179 | ada_binop_addsub_operation::evaluate (struct type *expect_type, | |
10180 | struct expression *exp, | |
10181 | enum noside noside) | |
10182 | { | |
10183 | value *arg1 = std::get<1> (m_storage)->evaluate_with_coercion (exp, noside); | |
10184 | value *arg2 = std::get<2> (m_storage)->evaluate_with_coercion (exp, noside); | |
10185 | ||
10186 | auto do_op = [=] (LONGEST x, LONGEST y) | |
10187 | { | |
10188 | if (std::get<0> (m_storage) == BINOP_ADD) | |
10189 | return x + y; | |
10190 | return x - y; | |
10191 | }; | |
10192 | ||
10193 | if (value_type (arg1)->code () == TYPE_CODE_PTR) | |
10194 | return (value_from_longest | |
10195 | (value_type (arg1), | |
10196 | do_op (value_as_long (arg1), value_as_long (arg2)))); | |
10197 | if (value_type (arg2)->code () == TYPE_CODE_PTR) | |
10198 | return (value_from_longest | |
10199 | (value_type (arg2), | |
10200 | do_op (value_as_long (arg1), value_as_long (arg2)))); | |
10201 | /* Preserve the original type for use by the range case below. | |
10202 | We cannot cast the result to a reference type, so if ARG1 is | |
10203 | a reference type, find its underlying type. */ | |
10204 | struct type *type = value_type (arg1); | |
10205 | while (type->code () == TYPE_CODE_REF) | |
10206 | type = TYPE_TARGET_TYPE (type); | |
10207 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10208 | arg1 = value_binop (arg1, arg2, std::get<0> (m_storage)); | |
10209 | /* We need to special-case the result with a range. | |
10210 | This is done for the benefit of "ptype". gdb's Ada support | |
10211 | historically used the LHS to set the result type here, so | |
10212 | preserve this behavior. */ | |
10213 | if (type->code () == TYPE_CODE_RANGE) | |
10214 | arg1 = value_cast (type, arg1); | |
10215 | return arg1; | |
10216 | } | |
10217 | ||
60fa02ca TT |
10218 | value * |
10219 | ada_unop_atr_operation::evaluate (struct type *expect_type, | |
10220 | struct expression *exp, | |
10221 | enum noside noside) | |
10222 | { | |
10223 | struct type *type_arg = nullptr; | |
10224 | value *val = nullptr; | |
10225 | ||
10226 | if (std::get<0> (m_storage)->opcode () == OP_TYPE) | |
10227 | { | |
10228 | value *tem = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
10229 | EVAL_AVOID_SIDE_EFFECTS); | |
10230 | type_arg = value_type (tem); | |
10231 | } | |
10232 | else | |
10233 | val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
10234 | ||
10235 | return ada_unop_atr (exp, noside, std::get<1> (m_storage), | |
10236 | val, type_arg, std::get<2> (m_storage)); | |
10237 | } | |
10238 | ||
3f4a0053 TT |
10239 | value * |
10240 | ada_var_msym_value_operation::evaluate_for_cast (struct type *expect_type, | |
10241 | struct expression *exp, | |
10242 | enum noside noside) | |
10243 | { | |
10244 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10245 | return value_zero (expect_type, not_lval); | |
10246 | ||
9c79936b TT |
10247 | const bound_minimal_symbol &b = std::get<0> (m_storage); |
10248 | value *val = evaluate_var_msym_value (noside, b.objfile, b.minsym); | |
3f4a0053 TT |
10249 | |
10250 | val = ada_value_cast (expect_type, val); | |
10251 | ||
10252 | /* Follow the Ada language semantics that do not allow taking | |
10253 | an address of the result of a cast (view conversion in Ada). */ | |
10254 | if (VALUE_LVAL (val) == lval_memory) | |
10255 | { | |
10256 | if (value_lazy (val)) | |
10257 | value_fetch_lazy (val); | |
10258 | VALUE_LVAL (val) = not_lval; | |
10259 | } | |
10260 | return val; | |
10261 | } | |
10262 | ||
99a3b1e7 TT |
10263 | value * |
10264 | ada_var_value_operation::evaluate_for_cast (struct type *expect_type, | |
10265 | struct expression *exp, | |
10266 | enum noside noside) | |
10267 | { | |
10268 | value *val = evaluate_var_value (noside, | |
9e5e03df TT |
10269 | std::get<0> (m_storage).block, |
10270 | std::get<0> (m_storage).symbol); | |
99a3b1e7 TT |
10271 | |
10272 | val = ada_value_cast (expect_type, val); | |
10273 | ||
10274 | /* Follow the Ada language semantics that do not allow taking | |
10275 | an address of the result of a cast (view conversion in Ada). */ | |
10276 | if (VALUE_LVAL (val) == lval_memory) | |
10277 | { | |
10278 | if (value_lazy (val)) | |
10279 | value_fetch_lazy (val); | |
10280 | VALUE_LVAL (val) = not_lval; | |
10281 | } | |
10282 | return val; | |
10283 | } | |
10284 | ||
10285 | value * | |
10286 | ada_var_value_operation::evaluate (struct type *expect_type, | |
10287 | struct expression *exp, | |
10288 | enum noside noside) | |
10289 | { | |
9e5e03df | 10290 | symbol *sym = std::get<0> (m_storage).symbol; |
99a3b1e7 TT |
10291 | |
10292 | if (SYMBOL_DOMAIN (sym) == UNDEF_DOMAIN) | |
10293 | /* Only encountered when an unresolved symbol occurs in a | |
10294 | context other than a function call, in which case, it is | |
10295 | invalid. */ | |
10296 | error (_("Unexpected unresolved symbol, %s, during evaluation"), | |
10297 | sym->print_name ()); | |
10298 | ||
10299 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10300 | { | |
10301 | struct type *type = static_unwrap_type (SYMBOL_TYPE (sym)); | |
10302 | /* Check to see if this is a tagged type. We also need to handle | |
10303 | the case where the type is a reference to a tagged type, but | |
10304 | we have to be careful to exclude pointers to tagged types. | |
10305 | The latter should be shown as usual (as a pointer), whereas | |
10306 | a reference should mostly be transparent to the user. */ | |
10307 | if (ada_is_tagged_type (type, 0) | |
10308 | || (type->code () == TYPE_CODE_REF | |
10309 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0))) | |
10310 | { | |
10311 | /* Tagged types are a little special in the fact that the real | |
10312 | type is dynamic and can only be determined by inspecting the | |
10313 | object's tag. This means that we need to get the object's | |
10314 | value first (EVAL_NORMAL) and then extract the actual object | |
10315 | type from its tag. | |
10316 | ||
10317 | Note that we cannot skip the final step where we extract | |
10318 | the object type from its tag, because the EVAL_NORMAL phase | |
10319 | results in dynamic components being resolved into fixed ones. | |
10320 | This can cause problems when trying to print the type | |
10321 | description of tagged types whose parent has a dynamic size: | |
10322 | We use the type name of the "_parent" component in order | |
10323 | to print the name of the ancestor type in the type description. | |
10324 | If that component had a dynamic size, the resolution into | |
10325 | a fixed type would result in the loss of that type name, | |
10326 | thus preventing us from printing the name of the ancestor | |
10327 | type in the type description. */ | |
9863c3b5 | 10328 | value *arg1 = evaluate (nullptr, exp, EVAL_NORMAL); |
99a3b1e7 TT |
10329 | |
10330 | if (type->code () != TYPE_CODE_REF) | |
10331 | { | |
10332 | struct type *actual_type; | |
10333 | ||
10334 | actual_type = type_from_tag (ada_value_tag (arg1)); | |
10335 | if (actual_type == NULL) | |
10336 | /* If, for some reason, we were unable to determine | |
10337 | the actual type from the tag, then use the static | |
10338 | approximation that we just computed as a fallback. | |
10339 | This can happen if the debugging information is | |
10340 | incomplete, for instance. */ | |
10341 | actual_type = type; | |
10342 | return value_zero (actual_type, not_lval); | |
10343 | } | |
10344 | else | |
10345 | { | |
10346 | /* In the case of a ref, ada_coerce_ref takes care | |
10347 | of determining the actual type. But the evaluation | |
10348 | should return a ref as it should be valid to ask | |
10349 | for its address; so rebuild a ref after coerce. */ | |
10350 | arg1 = ada_coerce_ref (arg1); | |
10351 | return value_ref (arg1, TYPE_CODE_REF); | |
10352 | } | |
10353 | } | |
10354 | ||
10355 | /* Records and unions for which GNAT encodings have been | |
10356 | generated need to be statically fixed as well. | |
10357 | Otherwise, non-static fixing produces a type where | |
10358 | all dynamic properties are removed, which prevents "ptype" | |
10359 | from being able to completely describe the type. | |
10360 | For instance, a case statement in a variant record would be | |
10361 | replaced by the relevant components based on the actual | |
10362 | value of the discriminants. */ | |
10363 | if ((type->code () == TYPE_CODE_STRUCT | |
10364 | && dynamic_template_type (type) != NULL) | |
10365 | || (type->code () == TYPE_CODE_UNION | |
10366 | && ada_find_parallel_type (type, "___XVU") != NULL)) | |
10367 | return value_zero (to_static_fixed_type (type), not_lval); | |
10368 | } | |
10369 | ||
10370 | value *arg1 = var_value_operation::evaluate (expect_type, exp, noside); | |
10371 | return ada_to_fixed_value (arg1); | |
10372 | } | |
10373 | ||
d8a4ed8a TT |
10374 | bool |
10375 | ada_var_value_operation::resolve (struct expression *exp, | |
10376 | bool deprocedure_p, | |
10377 | bool parse_completion, | |
10378 | innermost_block_tracker *tracker, | |
10379 | struct type *context_type) | |
10380 | { | |
9e5e03df | 10381 | symbol *sym = std::get<0> (m_storage).symbol; |
d8a4ed8a TT |
10382 | if (SYMBOL_DOMAIN (sym) == UNDEF_DOMAIN) |
10383 | { | |
10384 | block_symbol resolved | |
9e5e03df | 10385 | = ada_resolve_variable (sym, std::get<0> (m_storage).block, |
d8a4ed8a TT |
10386 | context_type, parse_completion, |
10387 | deprocedure_p, tracker); | |
9e5e03df | 10388 | std::get<0> (m_storage) = resolved; |
d8a4ed8a TT |
10389 | } |
10390 | ||
10391 | if (deprocedure_p | |
9e5e03df TT |
10392 | && (SYMBOL_TYPE (std::get<0> (m_storage).symbol)->code () |
10393 | == TYPE_CODE_FUNC)) | |
d8a4ed8a TT |
10394 | return true; |
10395 | ||
10396 | return false; | |
10397 | } | |
10398 | ||
9e99f48f TT |
10399 | value * |
10400 | ada_atr_val_operation::evaluate (struct type *expect_type, | |
10401 | struct expression *exp, | |
10402 | enum noside noside) | |
10403 | { | |
10404 | value *arg = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); | |
10405 | return ada_val_atr (noside, std::get<0> (m_storage), arg); | |
10406 | } | |
10407 | ||
e8c33fa1 TT |
10408 | value * |
10409 | ada_unop_ind_operation::evaluate (struct type *expect_type, | |
10410 | struct expression *exp, | |
10411 | enum noside noside) | |
10412 | { | |
10413 | value *arg1 = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); | |
10414 | ||
10415 | struct type *type = ada_check_typedef (value_type (arg1)); | |
10416 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10417 | { | |
10418 | if (ada_is_array_descriptor_type (type)) | |
10419 | /* GDB allows dereferencing GNAT array descriptors. */ | |
10420 | { | |
10421 | struct type *arrType = ada_type_of_array (arg1, 0); | |
10422 | ||
10423 | if (arrType == NULL) | |
10424 | error (_("Attempt to dereference null array pointer.")); | |
10425 | return value_at_lazy (arrType, 0); | |
10426 | } | |
10427 | else if (type->code () == TYPE_CODE_PTR | |
10428 | || type->code () == TYPE_CODE_REF | |
10429 | /* In C you can dereference an array to get the 1st elt. */ | |
10430 | || type->code () == TYPE_CODE_ARRAY) | |
10431 | { | |
10432 | /* As mentioned in the OP_VAR_VALUE case, tagged types can | |
10433 | only be determined by inspecting the object's tag. | |
10434 | This means that we need to evaluate completely the | |
10435 | expression in order to get its type. */ | |
10436 | ||
10437 | if ((type->code () == TYPE_CODE_REF | |
10438 | || type->code () == TYPE_CODE_PTR) | |
10439 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0)) | |
10440 | { | |
10441 | arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
10442 | EVAL_NORMAL); | |
10443 | type = value_type (ada_value_ind (arg1)); | |
10444 | } | |
10445 | else | |
10446 | { | |
10447 | type = to_static_fixed_type | |
10448 | (ada_aligned_type | |
10449 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
10450 | } | |
10451 | ada_ensure_varsize_limit (type); | |
10452 | return value_zero (type, lval_memory); | |
10453 | } | |
10454 | else if (type->code () == TYPE_CODE_INT) | |
10455 | { | |
10456 | /* GDB allows dereferencing an int. */ | |
10457 | if (expect_type == NULL) | |
10458 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
10459 | lval_memory); | |
10460 | else | |
10461 | { | |
10462 | expect_type = | |
10463 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
10464 | return value_zero (expect_type, lval_memory); | |
10465 | } | |
10466 | } | |
10467 | else | |
10468 | error (_("Attempt to take contents of a non-pointer value.")); | |
10469 | } | |
10470 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ | |
10471 | type = ada_check_typedef (value_type (arg1)); | |
10472 | ||
10473 | if (type->code () == TYPE_CODE_INT) | |
10474 | /* GDB allows dereferencing an int. If we were given | |
10475 | the expect_type, then use that as the target type. | |
10476 | Otherwise, assume that the target type is an int. */ | |
10477 | { | |
10478 | if (expect_type != NULL) | |
10479 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
10480 | arg1)); | |
10481 | else | |
10482 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
10483 | (CORE_ADDR) value_as_address (arg1)); | |
10484 | } | |
10485 | ||
3b5c4de0 TT |
10486 | struct type *target_type = (to_static_fixed_type |
10487 | (ada_aligned_type | |
10488 | (ada_check_typedef (TYPE_TARGET_TYPE (type))))); | |
10489 | ada_ensure_varsize_limit (target_type); | |
10490 | ||
e8c33fa1 TT |
10491 | if (ada_is_array_descriptor_type (type)) |
10492 | /* GDB allows dereferencing GNAT array descriptors. */ | |
10493 | return ada_coerce_to_simple_array (arg1); | |
10494 | else | |
10495 | return ada_value_ind (arg1); | |
10496 | } | |
10497 | ||
ebc06ad8 TT |
10498 | value * |
10499 | ada_structop_operation::evaluate (struct type *expect_type, | |
10500 | struct expression *exp, | |
10501 | enum noside noside) | |
10502 | { | |
10503 | value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
10504 | const char *str = std::get<1> (m_storage).c_str (); | |
10505 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10506 | { | |
10507 | struct type *type; | |
10508 | struct type *type1 = value_type (arg1); | |
10509 | ||
10510 | if (ada_is_tagged_type (type1, 1)) | |
10511 | { | |
10512 | type = ada_lookup_struct_elt_type (type1, str, 1, 1); | |
10513 | ||
10514 | /* If the field is not found, check if it exists in the | |
10515 | extension of this object's type. This means that we | |
10516 | need to evaluate completely the expression. */ | |
10517 | ||
10518 | if (type == NULL) | |
10519 | { | |
10520 | arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
10521 | EVAL_NORMAL); | |
10522 | arg1 = ada_value_struct_elt (arg1, str, 0); | |
10523 | arg1 = unwrap_value (arg1); | |
10524 | type = value_type (ada_to_fixed_value (arg1)); | |
10525 | } | |
10526 | } | |
10527 | else | |
10528 | type = ada_lookup_struct_elt_type (type1, str, 1, 0); | |
10529 | ||
10530 | return value_zero (ada_aligned_type (type), lval_memory); | |
10531 | } | |
10532 | else | |
10533 | { | |
10534 | arg1 = ada_value_struct_elt (arg1, str, 0); | |
10535 | arg1 = unwrap_value (arg1); | |
10536 | return ada_to_fixed_value (arg1); | |
10537 | } | |
10538 | } | |
10539 | ||
efe3af2f TT |
10540 | value * |
10541 | ada_funcall_operation::evaluate (struct type *expect_type, | |
10542 | struct expression *exp, | |
10543 | enum noside noside) | |
10544 | { | |
10545 | const std::vector<operation_up> &args_up = std::get<1> (m_storage); | |
10546 | int nargs = args_up.size (); | |
10547 | std::vector<value *> argvec (nargs); | |
10548 | operation_up &callee_op = std::get<0> (m_storage); | |
10549 | ||
10550 | ada_var_value_operation *avv | |
10551 | = dynamic_cast<ada_var_value_operation *> (callee_op.get ()); | |
10552 | if (avv != nullptr | |
10553 | && SYMBOL_DOMAIN (avv->get_symbol ()) == UNDEF_DOMAIN) | |
10554 | error (_("Unexpected unresolved symbol, %s, during evaluation"), | |
10555 | avv->get_symbol ()->print_name ()); | |
10556 | ||
10557 | value *callee = callee_op->evaluate (nullptr, exp, noside); | |
10558 | for (int i = 0; i < args_up.size (); ++i) | |
10559 | argvec[i] = args_up[i]->evaluate (nullptr, exp, noside); | |
10560 | ||
10561 | if (ada_is_constrained_packed_array_type | |
10562 | (desc_base_type (value_type (callee)))) | |
10563 | callee = ada_coerce_to_simple_array (callee); | |
10564 | else if (value_type (callee)->code () == TYPE_CODE_ARRAY | |
10565 | && TYPE_FIELD_BITSIZE (value_type (callee), 0) != 0) | |
10566 | /* This is a packed array that has already been fixed, and | |
10567 | therefore already coerced to a simple array. Nothing further | |
10568 | to do. */ | |
10569 | ; | |
10570 | else if (value_type (callee)->code () == TYPE_CODE_REF) | |
10571 | { | |
10572 | /* Make sure we dereference references so that all the code below | |
10573 | feels like it's really handling the referenced value. Wrapping | |
10574 | types (for alignment) may be there, so make sure we strip them as | |
10575 | well. */ | |
10576 | callee = ada_to_fixed_value (coerce_ref (callee)); | |
10577 | } | |
10578 | else if (value_type (callee)->code () == TYPE_CODE_ARRAY | |
10579 | && VALUE_LVAL (callee) == lval_memory) | |
10580 | callee = value_addr (callee); | |
10581 | ||
10582 | struct type *type = ada_check_typedef (value_type (callee)); | |
10583 | ||
10584 | /* Ada allows us to implicitly dereference arrays when subscripting | |
10585 | them. So, if this is an array typedef (encoding use for array | |
10586 | access types encoded as fat pointers), strip it now. */ | |
10587 | if (type->code () == TYPE_CODE_TYPEDEF) | |
10588 | type = ada_typedef_target_type (type); | |
10589 | ||
10590 | if (type->code () == TYPE_CODE_PTR) | |
10591 | { | |
10592 | switch (ada_check_typedef (TYPE_TARGET_TYPE (type))->code ()) | |
10593 | { | |
10594 | case TYPE_CODE_FUNC: | |
10595 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
10596 | break; | |
10597 | case TYPE_CODE_ARRAY: | |
10598 | break; | |
10599 | case TYPE_CODE_STRUCT: | |
10600 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
10601 | callee = ada_value_ind (callee); | |
10602 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
10603 | break; | |
10604 | default: | |
10605 | error (_("cannot subscript or call something of type `%s'"), | |
10606 | ada_type_name (value_type (callee))); | |
10607 | break; | |
10608 | } | |
10609 | } | |
10610 | ||
10611 | switch (type->code ()) | |
10612 | { | |
10613 | case TYPE_CODE_FUNC: | |
10614 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10615 | { | |
10616 | if (TYPE_TARGET_TYPE (type) == NULL) | |
10617 | error_call_unknown_return_type (NULL); | |
10618 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
10619 | } | |
10620 | return call_function_by_hand (callee, NULL, argvec); | |
10621 | case TYPE_CODE_INTERNAL_FUNCTION: | |
10622 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10623 | /* We don't know anything about what the internal | |
10624 | function might return, but we have to return | |
10625 | something. */ | |
10626 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
10627 | not_lval); | |
10628 | else | |
10629 | return call_internal_function (exp->gdbarch, exp->language_defn, | |
10630 | callee, nargs, | |
10631 | argvec.data ()); | |
10632 | ||
d3c54a1c TT |
10633 | case TYPE_CODE_STRUCT: |
10634 | { | |
10635 | int arity; | |
4c4b4cd2 | 10636 | |
d3c54a1c TT |
10637 | arity = ada_array_arity (type); |
10638 | type = ada_array_element_type (type, nargs); | |
10639 | if (type == NULL) | |
10640 | error (_("cannot subscript or call a record")); | |
10641 | if (arity != nargs) | |
10642 | error (_("wrong number of subscripts; expecting %d"), arity); | |
10643 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10644 | return value_zero (ada_aligned_type (type), lval_memory); | |
10645 | return | |
10646 | unwrap_value (ada_value_subscript | |
10647 | (callee, nargs, argvec.data ())); | |
10648 | } | |
10649 | case TYPE_CODE_ARRAY: | |
14f9c5c9 | 10650 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
dda83cd7 | 10651 | { |
d3c54a1c TT |
10652 | type = ada_array_element_type (type, nargs); |
10653 | if (type == NULL) | |
10654 | error (_("element type of array unknown")); | |
dda83cd7 | 10655 | else |
d3c54a1c | 10656 | return value_zero (ada_aligned_type (type), lval_memory); |
dda83cd7 | 10657 | } |
d3c54a1c TT |
10658 | return |
10659 | unwrap_value (ada_value_subscript | |
10660 | (ada_coerce_to_simple_array (callee), | |
10661 | nargs, argvec.data ())); | |
10662 | case TYPE_CODE_PTR: /* Pointer to array */ | |
10663 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
dda83cd7 | 10664 | { |
d3c54a1c TT |
10665 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); |
10666 | type = ada_array_element_type (type, nargs); | |
10667 | if (type == NULL) | |
10668 | error (_("element type of array unknown")); | |
96967637 | 10669 | else |
d3c54a1c | 10670 | return value_zero (ada_aligned_type (type), lval_memory); |
dda83cd7 | 10671 | } |
d3c54a1c TT |
10672 | return |
10673 | unwrap_value (ada_value_ptr_subscript (callee, nargs, | |
10674 | argvec.data ())); | |
6b0d7253 | 10675 | |
d3c54a1c TT |
10676 | default: |
10677 | error (_("Attempt to index or call something other than an " | |
10678 | "array or function")); | |
10679 | } | |
10680 | } | |
5b4ee69b | 10681 | |
d3c54a1c TT |
10682 | bool |
10683 | ada_funcall_operation::resolve (struct expression *exp, | |
10684 | bool deprocedure_p, | |
10685 | bool parse_completion, | |
10686 | innermost_block_tracker *tracker, | |
10687 | struct type *context_type) | |
10688 | { | |
10689 | operation_up &callee_op = std::get<0> (m_storage); | |
5ec18f2b | 10690 | |
d3c54a1c TT |
10691 | ada_var_value_operation *avv |
10692 | = dynamic_cast<ada_var_value_operation *> (callee_op.get ()); | |
10693 | if (avv == nullptr) | |
10694 | return false; | |
5ec18f2b | 10695 | |
d3c54a1c TT |
10696 | symbol *sym = avv->get_symbol (); |
10697 | if (SYMBOL_DOMAIN (sym) != UNDEF_DOMAIN) | |
10698 | return false; | |
dda83cd7 | 10699 | |
d3c54a1c TT |
10700 | const std::vector<operation_up> &args_up = std::get<1> (m_storage); |
10701 | int nargs = args_up.size (); | |
10702 | std::vector<value *> argvec (nargs); | |
284614f0 | 10703 | |
d3c54a1c TT |
10704 | for (int i = 0; i < args_up.size (); ++i) |
10705 | argvec[i] = args_up[i]->evaluate (nullptr, exp, EVAL_AVOID_SIDE_EFFECTS); | |
52ce6436 | 10706 | |
d3c54a1c TT |
10707 | const block *block = avv->get_block (); |
10708 | block_symbol resolved | |
10709 | = ada_resolve_funcall (sym, block, | |
10710 | context_type, parse_completion, | |
10711 | nargs, argvec.data (), | |
10712 | tracker); | |
10713 | ||
10714 | std::get<0> (m_storage) | |
9e5e03df | 10715 | = make_operation<ada_var_value_operation> (resolved); |
d3c54a1c TT |
10716 | return false; |
10717 | } | |
10718 | ||
10719 | bool | |
10720 | ada_ternop_slice_operation::resolve (struct expression *exp, | |
10721 | bool deprocedure_p, | |
10722 | bool parse_completion, | |
10723 | innermost_block_tracker *tracker, | |
10724 | struct type *context_type) | |
10725 | { | |
10726 | /* Historically this check was done during resolution, so we | |
10727 | continue that here. */ | |
10728 | value *v = std::get<0> (m_storage)->evaluate (context_type, exp, | |
10729 | EVAL_AVOID_SIDE_EFFECTS); | |
10730 | if (ada_is_any_packed_array_type (value_type (v))) | |
10731 | error (_("cannot slice a packed array")); | |
10732 | return false; | |
10733 | } | |
14f9c5c9 | 10734 | |
14f9c5c9 | 10735 | } |
d3c54a1c | 10736 | |
14f9c5c9 | 10737 | \f |
d2e4a39e | 10738 | |
4c4b4cd2 PH |
10739 | /* Return non-zero iff TYPE represents a System.Address type. */ |
10740 | ||
10741 | int | |
10742 | ada_is_system_address_type (struct type *type) | |
10743 | { | |
7d93a1e0 | 10744 | return (type->name () && strcmp (type->name (), "system__address") == 0); |
4c4b4cd2 PH |
10745 | } |
10746 | ||
14f9c5c9 | 10747 | \f |
d2e4a39e | 10748 | |
dda83cd7 | 10749 | /* Range types */ |
14f9c5c9 AS |
10750 | |
10751 | /* Scan STR beginning at position K for a discriminant name, and | |
10752 | return the value of that discriminant field of DVAL in *PX. If | |
10753 | PNEW_K is not null, put the position of the character beyond the | |
10754 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 10755 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
10756 | |
10757 | static int | |
108d56a4 | 10758 | scan_discrim_bound (const char *str, int k, struct value *dval, LONGEST * px, |
dda83cd7 | 10759 | int *pnew_k) |
14f9c5c9 | 10760 | { |
5f9febe0 | 10761 | static std::string storage; |
5da1a4d3 | 10762 | const char *pstart, *pend, *bound; |
d2e4a39e | 10763 | struct value *bound_val; |
14f9c5c9 AS |
10764 | |
10765 | if (dval == NULL || str == NULL || str[k] == '\0') | |
10766 | return 0; | |
10767 | ||
5da1a4d3 SM |
10768 | pstart = str + k; |
10769 | pend = strstr (pstart, "__"); | |
14f9c5c9 AS |
10770 | if (pend == NULL) |
10771 | { | |
5da1a4d3 | 10772 | bound = pstart; |
14f9c5c9 AS |
10773 | k += strlen (bound); |
10774 | } | |
d2e4a39e | 10775 | else |
14f9c5c9 | 10776 | { |
5da1a4d3 SM |
10777 | int len = pend - pstart; |
10778 | ||
10779 | /* Strip __ and beyond. */ | |
5f9febe0 TT |
10780 | storage = std::string (pstart, len); |
10781 | bound = storage.c_str (); | |
d2e4a39e | 10782 | k = pend - str; |
14f9c5c9 | 10783 | } |
d2e4a39e | 10784 | |
df407dfe | 10785 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
10786 | if (bound_val == NULL) |
10787 | return 0; | |
10788 | ||
10789 | *px = value_as_long (bound_val); | |
10790 | if (pnew_k != NULL) | |
10791 | *pnew_k = k; | |
10792 | return 1; | |
10793 | } | |
10794 | ||
25a1127b TT |
10795 | /* Value of variable named NAME. Only exact matches are considered. |
10796 | If no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
10797 | otherwise causes an error with message ERR_MSG. */ |
10798 | ||
d2e4a39e | 10799 | static struct value * |
edb0c9cb | 10800 | get_var_value (const char *name, const char *err_msg) |
14f9c5c9 | 10801 | { |
25a1127b TT |
10802 | std::string quoted_name = add_angle_brackets (name); |
10803 | ||
10804 | lookup_name_info lookup_name (quoted_name, symbol_name_match_type::FULL); | |
14f9c5c9 | 10805 | |
d1183b06 TT |
10806 | std::vector<struct block_symbol> syms |
10807 | = ada_lookup_symbol_list_worker (lookup_name, | |
10808 | get_selected_block (0), | |
10809 | VAR_DOMAIN, 1); | |
14f9c5c9 | 10810 | |
d1183b06 | 10811 | if (syms.size () != 1) |
14f9c5c9 AS |
10812 | { |
10813 | if (err_msg == NULL) | |
dda83cd7 | 10814 | return 0; |
14f9c5c9 | 10815 | else |
dda83cd7 | 10816 | error (("%s"), err_msg); |
14f9c5c9 AS |
10817 | } |
10818 | ||
54d343a2 | 10819 | return value_of_variable (syms[0].symbol, syms[0].block); |
14f9c5c9 | 10820 | } |
d2e4a39e | 10821 | |
edb0c9cb PA |
10822 | /* Value of integer variable named NAME in the current environment. |
10823 | If no such variable is found, returns false. Otherwise, sets VALUE | |
10824 | to the variable's value and returns true. */ | |
4c4b4cd2 | 10825 | |
edb0c9cb PA |
10826 | bool |
10827 | get_int_var_value (const char *name, LONGEST &value) | |
14f9c5c9 | 10828 | { |
4c4b4cd2 | 10829 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 10830 | |
14f9c5c9 | 10831 | if (var_val == 0) |
edb0c9cb PA |
10832 | return false; |
10833 | ||
10834 | value = value_as_long (var_val); | |
10835 | return true; | |
14f9c5c9 | 10836 | } |
d2e4a39e | 10837 | |
14f9c5c9 AS |
10838 | |
10839 | /* Return a range type whose base type is that of the range type named | |
10840 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 10841 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
10842 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
10843 | corresponding range type from debug information; fall back to using it | |
10844 | if symbol lookup fails. If a new type must be created, allocate it | |
10845 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
10846 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 10847 | |
d2e4a39e | 10848 | static struct type * |
28c85d6c | 10849 | to_fixed_range_type (struct type *raw_type, struct value *dval) |
14f9c5c9 | 10850 | { |
0d5cff50 | 10851 | const char *name; |
14f9c5c9 | 10852 | struct type *base_type; |
108d56a4 | 10853 | const char *subtype_info; |
14f9c5c9 | 10854 | |
28c85d6c | 10855 | gdb_assert (raw_type != NULL); |
7d93a1e0 | 10856 | gdb_assert (raw_type->name () != NULL); |
dddfab26 | 10857 | |
78134374 | 10858 | if (raw_type->code () == TYPE_CODE_RANGE) |
14f9c5c9 AS |
10859 | base_type = TYPE_TARGET_TYPE (raw_type); |
10860 | else | |
10861 | base_type = raw_type; | |
10862 | ||
7d93a1e0 | 10863 | name = raw_type->name (); |
14f9c5c9 AS |
10864 | subtype_info = strstr (name, "___XD"); |
10865 | if (subtype_info == NULL) | |
690cc4eb | 10866 | { |
43bbcdc2 PH |
10867 | LONGEST L = ada_discrete_type_low_bound (raw_type); |
10868 | LONGEST U = ada_discrete_type_high_bound (raw_type); | |
5b4ee69b | 10869 | |
690cc4eb PH |
10870 | if (L < INT_MIN || U > INT_MAX) |
10871 | return raw_type; | |
10872 | else | |
0c9c3474 SA |
10873 | return create_static_range_type (alloc_type_copy (raw_type), raw_type, |
10874 | L, U); | |
690cc4eb | 10875 | } |
14f9c5c9 AS |
10876 | else |
10877 | { | |
14f9c5c9 AS |
10878 | int prefix_len = subtype_info - name; |
10879 | LONGEST L, U; | |
10880 | struct type *type; | |
108d56a4 | 10881 | const char *bounds_str; |
14f9c5c9 AS |
10882 | int n; |
10883 | ||
14f9c5c9 AS |
10884 | subtype_info += 5; |
10885 | bounds_str = strchr (subtype_info, '_'); | |
10886 | n = 1; | |
10887 | ||
d2e4a39e | 10888 | if (*subtype_info == 'L') |
dda83cd7 SM |
10889 | { |
10890 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
10891 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
10892 | return raw_type; | |
10893 | if (bounds_str[n] == '_') | |
10894 | n += 2; | |
10895 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
10896 | n += 1; | |
10897 | subtype_info += 1; | |
10898 | } | |
d2e4a39e | 10899 | else |
dda83cd7 | 10900 | { |
5f9febe0 TT |
10901 | std::string name_buf = std::string (name, prefix_len) + "___L"; |
10902 | if (!get_int_var_value (name_buf.c_str (), L)) | |
dda83cd7 SM |
10903 | { |
10904 | lim_warning (_("Unknown lower bound, using 1.")); | |
10905 | L = 1; | |
10906 | } | |
10907 | } | |
14f9c5c9 | 10908 | |
d2e4a39e | 10909 | if (*subtype_info == 'U') |
dda83cd7 SM |
10910 | { |
10911 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
10912 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
10913 | return raw_type; | |
10914 | } | |
d2e4a39e | 10915 | else |
dda83cd7 | 10916 | { |
5f9febe0 TT |
10917 | std::string name_buf = std::string (name, prefix_len) + "___U"; |
10918 | if (!get_int_var_value (name_buf.c_str (), U)) | |
dda83cd7 SM |
10919 | { |
10920 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); | |
10921 | U = L; | |
10922 | } | |
10923 | } | |
14f9c5c9 | 10924 | |
0c9c3474 SA |
10925 | type = create_static_range_type (alloc_type_copy (raw_type), |
10926 | base_type, L, U); | |
f5a91472 | 10927 | /* create_static_range_type alters the resulting type's length |
dda83cd7 SM |
10928 | to match the size of the base_type, which is not what we want. |
10929 | Set it back to the original range type's length. */ | |
f5a91472 | 10930 | TYPE_LENGTH (type) = TYPE_LENGTH (raw_type); |
d0e39ea2 | 10931 | type->set_name (name); |
14f9c5c9 AS |
10932 | return type; |
10933 | } | |
10934 | } | |
10935 | ||
4c4b4cd2 PH |
10936 | /* True iff NAME is the name of a range type. */ |
10937 | ||
14f9c5c9 | 10938 | int |
d2e4a39e | 10939 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
10940 | { |
10941 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 10942 | } |
14f9c5c9 | 10943 | \f |
d2e4a39e | 10944 | |
dda83cd7 | 10945 | /* Modular types */ |
4c4b4cd2 PH |
10946 | |
10947 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 10948 | |
14f9c5c9 | 10949 | int |
d2e4a39e | 10950 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 10951 | { |
18af8284 | 10952 | struct type *subranged_type = get_base_type (type); |
14f9c5c9 | 10953 | |
78134374 | 10954 | return (subranged_type != NULL && type->code () == TYPE_CODE_RANGE |
dda83cd7 SM |
10955 | && subranged_type->code () == TYPE_CODE_INT |
10956 | && subranged_type->is_unsigned ()); | |
14f9c5c9 AS |
10957 | } |
10958 | ||
4c4b4cd2 PH |
10959 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
10960 | ||
61ee279c | 10961 | ULONGEST |
0056e4d5 | 10962 | ada_modulus (struct type *type) |
14f9c5c9 | 10963 | { |
5e500d33 SM |
10964 | const dynamic_prop &high = type->bounds ()->high; |
10965 | ||
10966 | if (high.kind () == PROP_CONST) | |
10967 | return (ULONGEST) high.const_val () + 1; | |
10968 | ||
10969 | /* If TYPE is unresolved, the high bound might be a location list. Return | |
10970 | 0, for lack of a better value to return. */ | |
10971 | return 0; | |
14f9c5c9 | 10972 | } |
d2e4a39e | 10973 | \f |
f7f9143b JB |
10974 | |
10975 | /* Ada exception catchpoint support: | |
10976 | --------------------------------- | |
10977 | ||
10978 | We support 3 kinds of exception catchpoints: | |
10979 | . catchpoints on Ada exceptions | |
10980 | . catchpoints on unhandled Ada exceptions | |
10981 | . catchpoints on failed assertions | |
10982 | ||
10983 | Exceptions raised during failed assertions, or unhandled exceptions | |
10984 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
10985 | However, we can easily differentiate these two special cases, and having | |
10986 | the option to distinguish these two cases from the rest can be useful | |
10987 | to zero-in on certain situations. | |
10988 | ||
10989 | Exception catchpoints are a specialized form of breakpoint, | |
10990 | since they rely on inserting breakpoints inside known routines | |
10991 | of the GNAT runtime. The implementation therefore uses a standard | |
10992 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
10993 | of breakpoint_ops. | |
10994 | ||
0259addd JB |
10995 | Support in the runtime for exception catchpoints have been changed |
10996 | a few times already, and these changes affect the implementation | |
10997 | of these catchpoints. In order to be able to support several | |
10998 | variants of the runtime, we use a sniffer that will determine | |
28010a5d | 10999 | the runtime variant used by the program being debugged. */ |
f7f9143b | 11000 | |
82eacd52 JB |
11001 | /* Ada's standard exceptions. |
11002 | ||
11003 | The Ada 83 standard also defined Numeric_Error. But there so many | |
11004 | situations where it was unclear from the Ada 83 Reference Manual | |
11005 | (RM) whether Constraint_Error or Numeric_Error should be raised, | |
11006 | that the ARG (Ada Rapporteur Group) eventually issued a Binding | |
11007 | Interpretation saying that anytime the RM says that Numeric_Error | |
11008 | should be raised, the implementation may raise Constraint_Error. | |
11009 | Ada 95 went one step further and pretty much removed Numeric_Error | |
11010 | from the list of standard exceptions (it made it a renaming of | |
11011 | Constraint_Error, to help preserve compatibility when compiling | |
11012 | an Ada83 compiler). As such, we do not include Numeric_Error from | |
11013 | this list of standard exceptions. */ | |
3d0b0fa3 | 11014 | |
27087b7f | 11015 | static const char * const standard_exc[] = { |
3d0b0fa3 JB |
11016 | "constraint_error", |
11017 | "program_error", | |
11018 | "storage_error", | |
11019 | "tasking_error" | |
11020 | }; | |
11021 | ||
0259addd JB |
11022 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
11023 | ||
11024 | /* A structure that describes how to support exception catchpoints | |
11025 | for a given executable. */ | |
11026 | ||
11027 | struct exception_support_info | |
11028 | { | |
11029 | /* The name of the symbol to break on in order to insert | |
11030 | a catchpoint on exceptions. */ | |
11031 | const char *catch_exception_sym; | |
11032 | ||
11033 | /* The name of the symbol to break on in order to insert | |
11034 | a catchpoint on unhandled exceptions. */ | |
11035 | const char *catch_exception_unhandled_sym; | |
11036 | ||
11037 | /* The name of the symbol to break on in order to insert | |
11038 | a catchpoint on failed assertions. */ | |
11039 | const char *catch_assert_sym; | |
11040 | ||
9f757bf7 XR |
11041 | /* The name of the symbol to break on in order to insert |
11042 | a catchpoint on exception handling. */ | |
11043 | const char *catch_handlers_sym; | |
11044 | ||
0259addd JB |
11045 | /* Assuming that the inferior just triggered an unhandled exception |
11046 | catchpoint, this function is responsible for returning the address | |
11047 | in inferior memory where the name of that exception is stored. | |
11048 | Return zero if the address could not be computed. */ | |
11049 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
11050 | }; | |
11051 | ||
11052 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
11053 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
11054 | ||
11055 | /* The following exception support info structure describes how to | |
11056 | implement exception catchpoints with the latest version of the | |
ca683e3a | 11057 | Ada runtime (as of 2019-08-??). */ |
0259addd JB |
11058 | |
11059 | static const struct exception_support_info default_exception_support_info = | |
ca683e3a AO |
11060 | { |
11061 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
11062 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11063 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
11064 | "__gnat_begin_handler_v1", /* catch_handlers_sym */ | |
11065 | ada_unhandled_exception_name_addr | |
11066 | }; | |
11067 | ||
11068 | /* The following exception support info structure describes how to | |
11069 | implement exception catchpoints with an earlier version of the | |
11070 | Ada runtime (as of 2007-03-06) using v0 of the EH ABI. */ | |
11071 | ||
11072 | static const struct exception_support_info exception_support_info_v0 = | |
0259addd JB |
11073 | { |
11074 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
11075 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11076 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 11077 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
11078 | ada_unhandled_exception_name_addr |
11079 | }; | |
11080 | ||
11081 | /* The following exception support info structure describes how to | |
11082 | implement exception catchpoints with a slightly older version | |
11083 | of the Ada runtime. */ | |
11084 | ||
11085 | static const struct exception_support_info exception_support_info_fallback = | |
11086 | { | |
11087 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
11088 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11089 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 11090 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
11091 | ada_unhandled_exception_name_addr_from_raise |
11092 | }; | |
11093 | ||
f17011e0 JB |
11094 | /* Return nonzero if we can detect the exception support routines |
11095 | described in EINFO. | |
11096 | ||
11097 | This function errors out if an abnormal situation is detected | |
11098 | (for instance, if we find the exception support routines, but | |
11099 | that support is found to be incomplete). */ | |
11100 | ||
11101 | static int | |
11102 | ada_has_this_exception_support (const struct exception_support_info *einfo) | |
11103 | { | |
11104 | struct symbol *sym; | |
11105 | ||
11106 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
11107 | that should be compiled with debugging information. As a result, we | |
11108 | expect to find that symbol in the symtabs. */ | |
11109 | ||
11110 | sym = standard_lookup (einfo->catch_exception_sym, NULL, VAR_DOMAIN); | |
11111 | if (sym == NULL) | |
a6af7abe JB |
11112 | { |
11113 | /* Perhaps we did not find our symbol because the Ada runtime was | |
11114 | compiled without debugging info, or simply stripped of it. | |
11115 | It happens on some GNU/Linux distributions for instance, where | |
11116 | users have to install a separate debug package in order to get | |
11117 | the runtime's debugging info. In that situation, let the user | |
11118 | know why we cannot insert an Ada exception catchpoint. | |
11119 | ||
11120 | Note: Just for the purpose of inserting our Ada exception | |
11121 | catchpoint, we could rely purely on the associated minimal symbol. | |
11122 | But we would be operating in degraded mode anyway, since we are | |
11123 | still lacking the debugging info needed later on to extract | |
11124 | the name of the exception being raised (this name is printed in | |
11125 | the catchpoint message, and is also used when trying to catch | |
11126 | a specific exception). We do not handle this case for now. */ | |
3b7344d5 | 11127 | struct bound_minimal_symbol msym |
1c8e84b0 JB |
11128 | = lookup_minimal_symbol (einfo->catch_exception_sym, NULL, NULL); |
11129 | ||
3b7344d5 | 11130 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) |
a6af7abe JB |
11131 | error (_("Your Ada runtime appears to be missing some debugging " |
11132 | "information.\nCannot insert Ada exception catchpoint " | |
11133 | "in this configuration.")); | |
11134 | ||
11135 | return 0; | |
11136 | } | |
f17011e0 JB |
11137 | |
11138 | /* Make sure that the symbol we found corresponds to a function. */ | |
11139 | ||
11140 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
ca683e3a AO |
11141 | { |
11142 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
987012b8 | 11143 | sym->linkage_name (), SYMBOL_CLASS (sym)); |
ca683e3a AO |
11144 | return 0; |
11145 | } | |
11146 | ||
11147 | sym = standard_lookup (einfo->catch_handlers_sym, NULL, VAR_DOMAIN); | |
11148 | if (sym == NULL) | |
11149 | { | |
11150 | struct bound_minimal_symbol msym | |
11151 | = lookup_minimal_symbol (einfo->catch_handlers_sym, NULL, NULL); | |
11152 | ||
11153 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) | |
11154 | error (_("Your Ada runtime appears to be missing some debugging " | |
11155 | "information.\nCannot insert Ada exception catchpoint " | |
11156 | "in this configuration.")); | |
11157 | ||
11158 | return 0; | |
11159 | } | |
11160 | ||
11161 | /* Make sure that the symbol we found corresponds to a function. */ | |
11162 | ||
11163 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
11164 | { | |
11165 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
987012b8 | 11166 | sym->linkage_name (), SYMBOL_CLASS (sym)); |
ca683e3a AO |
11167 | return 0; |
11168 | } | |
f17011e0 JB |
11169 | |
11170 | return 1; | |
11171 | } | |
11172 | ||
0259addd JB |
11173 | /* Inspect the Ada runtime and determine which exception info structure |
11174 | should be used to provide support for exception catchpoints. | |
11175 | ||
3eecfa55 JB |
11176 | This function will always set the per-inferior exception_info, |
11177 | or raise an error. */ | |
0259addd JB |
11178 | |
11179 | static void | |
11180 | ada_exception_support_info_sniffer (void) | |
11181 | { | |
3eecfa55 | 11182 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
0259addd JB |
11183 | |
11184 | /* If the exception info is already known, then no need to recompute it. */ | |
3eecfa55 | 11185 | if (data->exception_info != NULL) |
0259addd JB |
11186 | return; |
11187 | ||
11188 | /* Check the latest (default) exception support info. */ | |
f17011e0 | 11189 | if (ada_has_this_exception_support (&default_exception_support_info)) |
0259addd | 11190 | { |
3eecfa55 | 11191 | data->exception_info = &default_exception_support_info; |
0259addd JB |
11192 | return; |
11193 | } | |
11194 | ||
ca683e3a AO |
11195 | /* Try the v0 exception suport info. */ |
11196 | if (ada_has_this_exception_support (&exception_support_info_v0)) | |
11197 | { | |
11198 | data->exception_info = &exception_support_info_v0; | |
11199 | return; | |
11200 | } | |
11201 | ||
0259addd | 11202 | /* Try our fallback exception suport info. */ |
f17011e0 | 11203 | if (ada_has_this_exception_support (&exception_support_info_fallback)) |
0259addd | 11204 | { |
3eecfa55 | 11205 | data->exception_info = &exception_support_info_fallback; |
0259addd JB |
11206 | return; |
11207 | } | |
11208 | ||
11209 | /* Sometimes, it is normal for us to not be able to find the routine | |
11210 | we are looking for. This happens when the program is linked with | |
11211 | the shared version of the GNAT runtime, and the program has not been | |
11212 | started yet. Inform the user of these two possible causes if | |
11213 | applicable. */ | |
11214 | ||
ccefe4c4 | 11215 | if (ada_update_initial_language (language_unknown) != language_ada) |
0259addd JB |
11216 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); |
11217 | ||
11218 | /* If the symbol does not exist, then check that the program is | |
11219 | already started, to make sure that shared libraries have been | |
11220 | loaded. If it is not started, this may mean that the symbol is | |
11221 | in a shared library. */ | |
11222 | ||
e99b03dc | 11223 | if (inferior_ptid.pid () == 0) |
0259addd JB |
11224 | error (_("Unable to insert catchpoint. Try to start the program first.")); |
11225 | ||
11226 | /* At this point, we know that we are debugging an Ada program and | |
11227 | that the inferior has been started, but we still are not able to | |
0963b4bd | 11228 | find the run-time symbols. That can mean that we are in |
0259addd JB |
11229 | configurable run time mode, or that a-except as been optimized |
11230 | out by the linker... In any case, at this point it is not worth | |
11231 | supporting this feature. */ | |
11232 | ||
7dda8cff | 11233 | error (_("Cannot insert Ada exception catchpoints in this configuration.")); |
0259addd JB |
11234 | } |
11235 | ||
f7f9143b JB |
11236 | /* True iff FRAME is very likely to be that of a function that is |
11237 | part of the runtime system. This is all very heuristic, but is | |
11238 | intended to be used as advice as to what frames are uninteresting | |
11239 | to most users. */ | |
11240 | ||
11241 | static int | |
11242 | is_known_support_routine (struct frame_info *frame) | |
11243 | { | |
692465f1 | 11244 | enum language func_lang; |
f7f9143b | 11245 | int i; |
f35a17b5 | 11246 | const char *fullname; |
f7f9143b | 11247 | |
4ed6b5be JB |
11248 | /* If this code does not have any debugging information (no symtab), |
11249 | This cannot be any user code. */ | |
f7f9143b | 11250 | |
51abb421 | 11251 | symtab_and_line sal = find_frame_sal (frame); |
f7f9143b JB |
11252 | if (sal.symtab == NULL) |
11253 | return 1; | |
11254 | ||
4ed6b5be JB |
11255 | /* If there is a symtab, but the associated source file cannot be |
11256 | located, then assume this is not user code: Selecting a frame | |
11257 | for which we cannot display the code would not be very helpful | |
11258 | for the user. This should also take care of case such as VxWorks | |
11259 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 11260 | |
f35a17b5 JK |
11261 | fullname = symtab_to_fullname (sal.symtab); |
11262 | if (access (fullname, R_OK) != 0) | |
f7f9143b JB |
11263 | return 1; |
11264 | ||
85102364 | 11265 | /* Check the unit filename against the Ada runtime file naming. |
4ed6b5be JB |
11266 | We also check the name of the objfile against the name of some |
11267 | known system libraries that sometimes come with debugging info | |
11268 | too. */ | |
11269 | ||
f7f9143b JB |
11270 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
11271 | { | |
11272 | re_comp (known_runtime_file_name_patterns[i]); | |
f69c91ad | 11273 | if (re_exec (lbasename (sal.symtab->filename))) |
dda83cd7 | 11274 | return 1; |
eb822aa6 | 11275 | if (SYMTAB_OBJFILE (sal.symtab) != NULL |
dda83cd7 SM |
11276 | && re_exec (objfile_name (SYMTAB_OBJFILE (sal.symtab)))) |
11277 | return 1; | |
f7f9143b JB |
11278 | } |
11279 | ||
4ed6b5be | 11280 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 11281 | |
c6dc63a1 TT |
11282 | gdb::unique_xmalloc_ptr<char> func_name |
11283 | = find_frame_funname (frame, &func_lang, NULL); | |
f7f9143b JB |
11284 | if (func_name == NULL) |
11285 | return 1; | |
11286 | ||
11287 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
11288 | { | |
11289 | re_comp (known_auxiliary_function_name_patterns[i]); | |
c6dc63a1 TT |
11290 | if (re_exec (func_name.get ())) |
11291 | return 1; | |
f7f9143b JB |
11292 | } |
11293 | ||
11294 | return 0; | |
11295 | } | |
11296 | ||
11297 | /* Find the first frame that contains debugging information and that is not | |
11298 | part of the Ada run-time, starting from FI and moving upward. */ | |
11299 | ||
0ef643c8 | 11300 | void |
f7f9143b JB |
11301 | ada_find_printable_frame (struct frame_info *fi) |
11302 | { | |
11303 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
11304 | { | |
11305 | if (!is_known_support_routine (fi)) | |
dda83cd7 SM |
11306 | { |
11307 | select_frame (fi); | |
11308 | break; | |
11309 | } | |
f7f9143b JB |
11310 | } |
11311 | ||
11312 | } | |
11313 | ||
11314 | /* Assuming that the inferior just triggered an unhandled exception | |
11315 | catchpoint, return the address in inferior memory where the name | |
11316 | of the exception is stored. | |
11317 | ||
11318 | Return zero if the address could not be computed. */ | |
11319 | ||
11320 | static CORE_ADDR | |
11321 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
11322 | { |
11323 | return parse_and_eval_address ("e.full_name"); | |
11324 | } | |
11325 | ||
11326 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
11327 | should be used when the inferior uses an older version of the runtime, | |
11328 | where the exception name needs to be extracted from a specific frame | |
11329 | several frames up in the callstack. */ | |
11330 | ||
11331 | static CORE_ADDR | |
11332 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
11333 | { |
11334 | int frame_level; | |
11335 | struct frame_info *fi; | |
3eecfa55 | 11336 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
f7f9143b JB |
11337 | |
11338 | /* To determine the name of this exception, we need to select | |
11339 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
11340 | at least 3 levels up, so we simply skip the first 3 frames | |
11341 | without checking the name of their associated function. */ | |
11342 | fi = get_current_frame (); | |
11343 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
11344 | if (fi != NULL) | |
11345 | fi = get_prev_frame (fi); | |
11346 | ||
11347 | while (fi != NULL) | |
11348 | { | |
692465f1 JB |
11349 | enum language func_lang; |
11350 | ||
c6dc63a1 TT |
11351 | gdb::unique_xmalloc_ptr<char> func_name |
11352 | = find_frame_funname (fi, &func_lang, NULL); | |
55b87a52 KS |
11353 | if (func_name != NULL) |
11354 | { | |
dda83cd7 | 11355 | if (strcmp (func_name.get (), |
55b87a52 KS |
11356 | data->exception_info->catch_exception_sym) == 0) |
11357 | break; /* We found the frame we were looking for... */ | |
55b87a52 | 11358 | } |
fb44b1a7 | 11359 | fi = get_prev_frame (fi); |
f7f9143b JB |
11360 | } |
11361 | ||
11362 | if (fi == NULL) | |
11363 | return 0; | |
11364 | ||
11365 | select_frame (fi); | |
11366 | return parse_and_eval_address ("id.full_name"); | |
11367 | } | |
11368 | ||
11369 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
11370 | (of any type), return the address in inferior memory where the name | |
11371 | of the exception is stored, if applicable. | |
11372 | ||
45db7c09 PA |
11373 | Assumes the selected frame is the current frame. |
11374 | ||
f7f9143b JB |
11375 | Return zero if the address could not be computed, or if not relevant. */ |
11376 | ||
11377 | static CORE_ADDR | |
761269c8 | 11378 | ada_exception_name_addr_1 (enum ada_exception_catchpoint_kind ex, |
dda83cd7 | 11379 | struct breakpoint *b) |
f7f9143b | 11380 | { |
3eecfa55 JB |
11381 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
11382 | ||
f7f9143b JB |
11383 | switch (ex) |
11384 | { | |
761269c8 | 11385 | case ada_catch_exception: |
dda83cd7 SM |
11386 | return (parse_and_eval_address ("e.full_name")); |
11387 | break; | |
f7f9143b | 11388 | |
761269c8 | 11389 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
11390 | return data->exception_info->unhandled_exception_name_addr (); |
11391 | break; | |
9f757bf7 XR |
11392 | |
11393 | case ada_catch_handlers: | |
dda83cd7 | 11394 | return 0; /* The runtimes does not provide access to the exception |
9f757bf7 | 11395 | name. */ |
dda83cd7 | 11396 | break; |
9f757bf7 | 11397 | |
761269c8 | 11398 | case ada_catch_assert: |
dda83cd7 SM |
11399 | return 0; /* Exception name is not relevant in this case. */ |
11400 | break; | |
f7f9143b JB |
11401 | |
11402 | default: | |
dda83cd7 SM |
11403 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
11404 | break; | |
f7f9143b JB |
11405 | } |
11406 | ||
11407 | return 0; /* Should never be reached. */ | |
11408 | } | |
11409 | ||
e547c119 JB |
11410 | /* Assuming the inferior is stopped at an exception catchpoint, |
11411 | return the message which was associated to the exception, if | |
11412 | available. Return NULL if the message could not be retrieved. | |
11413 | ||
e547c119 JB |
11414 | Note: The exception message can be associated to an exception |
11415 | either through the use of the Raise_Exception function, or | |
11416 | more simply (Ada 2005 and later), via: | |
11417 | ||
11418 | raise Exception_Name with "exception message"; | |
11419 | ||
11420 | */ | |
11421 | ||
6f46ac85 | 11422 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
11423 | ada_exception_message_1 (void) |
11424 | { | |
11425 | struct value *e_msg_val; | |
e547c119 | 11426 | int e_msg_len; |
e547c119 JB |
11427 | |
11428 | /* For runtimes that support this feature, the exception message | |
11429 | is passed as an unbounded string argument called "message". */ | |
11430 | e_msg_val = parse_and_eval ("message"); | |
11431 | if (e_msg_val == NULL) | |
11432 | return NULL; /* Exception message not supported. */ | |
11433 | ||
11434 | e_msg_val = ada_coerce_to_simple_array (e_msg_val); | |
11435 | gdb_assert (e_msg_val != NULL); | |
11436 | e_msg_len = TYPE_LENGTH (value_type (e_msg_val)); | |
11437 | ||
11438 | /* If the message string is empty, then treat it as if there was | |
11439 | no exception message. */ | |
11440 | if (e_msg_len <= 0) | |
11441 | return NULL; | |
11442 | ||
15f3b077 TT |
11443 | gdb::unique_xmalloc_ptr<char> e_msg ((char *) xmalloc (e_msg_len + 1)); |
11444 | read_memory (value_address (e_msg_val), (gdb_byte *) e_msg.get (), | |
11445 | e_msg_len); | |
11446 | e_msg.get ()[e_msg_len] = '\0'; | |
11447 | ||
11448 | return e_msg; | |
e547c119 JB |
11449 | } |
11450 | ||
11451 | /* Same as ada_exception_message_1, except that all exceptions are | |
11452 | contained here (returning NULL instead). */ | |
11453 | ||
6f46ac85 | 11454 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
11455 | ada_exception_message (void) |
11456 | { | |
6f46ac85 | 11457 | gdb::unique_xmalloc_ptr<char> e_msg; |
e547c119 | 11458 | |
a70b8144 | 11459 | try |
e547c119 JB |
11460 | { |
11461 | e_msg = ada_exception_message_1 (); | |
11462 | } | |
230d2906 | 11463 | catch (const gdb_exception_error &e) |
e547c119 | 11464 | { |
6f46ac85 | 11465 | e_msg.reset (nullptr); |
e547c119 | 11466 | } |
e547c119 JB |
11467 | |
11468 | return e_msg; | |
11469 | } | |
11470 | ||
f7f9143b JB |
11471 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains |
11472 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
11473 | When an error is intercepted, a warning with the error message is printed, | |
11474 | and zero is returned. */ | |
11475 | ||
11476 | static CORE_ADDR | |
761269c8 | 11477 | ada_exception_name_addr (enum ada_exception_catchpoint_kind ex, |
dda83cd7 | 11478 | struct breakpoint *b) |
f7f9143b | 11479 | { |
f7f9143b JB |
11480 | CORE_ADDR result = 0; |
11481 | ||
a70b8144 | 11482 | try |
f7f9143b JB |
11483 | { |
11484 | result = ada_exception_name_addr_1 (ex, b); | |
11485 | } | |
11486 | ||
230d2906 | 11487 | catch (const gdb_exception_error &e) |
f7f9143b | 11488 | { |
3d6e9d23 | 11489 | warning (_("failed to get exception name: %s"), e.what ()); |
f7f9143b JB |
11490 | return 0; |
11491 | } | |
11492 | ||
11493 | return result; | |
11494 | } | |
11495 | ||
cb7de75e | 11496 | static std::string ada_exception_catchpoint_cond_string |
9f757bf7 XR |
11497 | (const char *excep_string, |
11498 | enum ada_exception_catchpoint_kind ex); | |
28010a5d PA |
11499 | |
11500 | /* Ada catchpoints. | |
11501 | ||
11502 | In the case of catchpoints on Ada exceptions, the catchpoint will | |
11503 | stop the target on every exception the program throws. When a user | |
11504 | specifies the name of a specific exception, we translate this | |
11505 | request into a condition expression (in text form), and then parse | |
11506 | it into an expression stored in each of the catchpoint's locations. | |
11507 | We then use this condition to check whether the exception that was | |
11508 | raised is the one the user is interested in. If not, then the | |
11509 | target is resumed again. We store the name of the requested | |
11510 | exception, in order to be able to re-set the condition expression | |
11511 | when symbols change. */ | |
11512 | ||
11513 | /* An instance of this type is used to represent an Ada catchpoint | |
5625a286 | 11514 | breakpoint location. */ |
28010a5d | 11515 | |
5625a286 | 11516 | class ada_catchpoint_location : public bp_location |
28010a5d | 11517 | { |
5625a286 | 11518 | public: |
5f486660 | 11519 | ada_catchpoint_location (breakpoint *owner) |
f06f1252 | 11520 | : bp_location (owner, bp_loc_software_breakpoint) |
5625a286 | 11521 | {} |
28010a5d PA |
11522 | |
11523 | /* The condition that checks whether the exception that was raised | |
11524 | is the specific exception the user specified on catchpoint | |
11525 | creation. */ | |
4d01a485 | 11526 | expression_up excep_cond_expr; |
28010a5d PA |
11527 | }; |
11528 | ||
c1fc2657 | 11529 | /* An instance of this type is used to represent an Ada catchpoint. */ |
28010a5d | 11530 | |
c1fc2657 | 11531 | struct ada_catchpoint : public breakpoint |
28010a5d | 11532 | { |
37f6a7f4 TT |
11533 | explicit ada_catchpoint (enum ada_exception_catchpoint_kind kind) |
11534 | : m_kind (kind) | |
11535 | { | |
11536 | } | |
11537 | ||
28010a5d | 11538 | /* The name of the specific exception the user specified. */ |
bc18fbb5 | 11539 | std::string excep_string; |
37f6a7f4 TT |
11540 | |
11541 | /* What kind of catchpoint this is. */ | |
11542 | enum ada_exception_catchpoint_kind m_kind; | |
28010a5d PA |
11543 | }; |
11544 | ||
11545 | /* Parse the exception condition string in the context of each of the | |
11546 | catchpoint's locations, and store them for later evaluation. */ | |
11547 | ||
11548 | static void | |
9f757bf7 | 11549 | create_excep_cond_exprs (struct ada_catchpoint *c, |
dda83cd7 | 11550 | enum ada_exception_catchpoint_kind ex) |
28010a5d | 11551 | { |
fccf9de1 TT |
11552 | struct bp_location *bl; |
11553 | ||
28010a5d | 11554 | /* Nothing to do if there's no specific exception to catch. */ |
bc18fbb5 | 11555 | if (c->excep_string.empty ()) |
28010a5d PA |
11556 | return; |
11557 | ||
11558 | /* Same if there are no locations... */ | |
c1fc2657 | 11559 | if (c->loc == NULL) |
28010a5d PA |
11560 | return; |
11561 | ||
fccf9de1 TT |
11562 | /* Compute the condition expression in text form, from the specific |
11563 | expection we want to catch. */ | |
11564 | std::string cond_string | |
11565 | = ada_exception_catchpoint_cond_string (c->excep_string.c_str (), ex); | |
28010a5d | 11566 | |
fccf9de1 TT |
11567 | /* Iterate over all the catchpoint's locations, and parse an |
11568 | expression for each. */ | |
11569 | for (bl = c->loc; bl != NULL; bl = bl->next) | |
28010a5d PA |
11570 | { |
11571 | struct ada_catchpoint_location *ada_loc | |
fccf9de1 | 11572 | = (struct ada_catchpoint_location *) bl; |
4d01a485 | 11573 | expression_up exp; |
28010a5d | 11574 | |
fccf9de1 | 11575 | if (!bl->shlib_disabled) |
28010a5d | 11576 | { |
bbc13ae3 | 11577 | const char *s; |
28010a5d | 11578 | |
cb7de75e | 11579 | s = cond_string.c_str (); |
a70b8144 | 11580 | try |
28010a5d | 11581 | { |
fccf9de1 TT |
11582 | exp = parse_exp_1 (&s, bl->address, |
11583 | block_for_pc (bl->address), | |
036e657b | 11584 | 0); |
28010a5d | 11585 | } |
230d2906 | 11586 | catch (const gdb_exception_error &e) |
849f2b52 JB |
11587 | { |
11588 | warning (_("failed to reevaluate internal exception condition " | |
11589 | "for catchpoint %d: %s"), | |
3d6e9d23 | 11590 | c->number, e.what ()); |
849f2b52 | 11591 | } |
28010a5d PA |
11592 | } |
11593 | ||
b22e99fd | 11594 | ada_loc->excep_cond_expr = std::move (exp); |
28010a5d | 11595 | } |
28010a5d PA |
11596 | } |
11597 | ||
28010a5d PA |
11598 | /* Implement the ALLOCATE_LOCATION method in the breakpoint_ops |
11599 | structure for all exception catchpoint kinds. */ | |
11600 | ||
11601 | static struct bp_location * | |
37f6a7f4 | 11602 | allocate_location_exception (struct breakpoint *self) |
28010a5d | 11603 | { |
5f486660 | 11604 | return new ada_catchpoint_location (self); |
28010a5d PA |
11605 | } |
11606 | ||
11607 | /* Implement the RE_SET method in the breakpoint_ops structure for all | |
11608 | exception catchpoint kinds. */ | |
11609 | ||
11610 | static void | |
37f6a7f4 | 11611 | re_set_exception (struct breakpoint *b) |
28010a5d PA |
11612 | { |
11613 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
11614 | ||
11615 | /* Call the base class's method. This updates the catchpoint's | |
11616 | locations. */ | |
2060206e | 11617 | bkpt_breakpoint_ops.re_set (b); |
28010a5d PA |
11618 | |
11619 | /* Reparse the exception conditional expressions. One for each | |
11620 | location. */ | |
37f6a7f4 | 11621 | create_excep_cond_exprs (c, c->m_kind); |
28010a5d PA |
11622 | } |
11623 | ||
11624 | /* Returns true if we should stop for this breakpoint hit. If the | |
11625 | user specified a specific exception, we only want to cause a stop | |
11626 | if the program thrown that exception. */ | |
11627 | ||
11628 | static int | |
11629 | should_stop_exception (const struct bp_location *bl) | |
11630 | { | |
11631 | struct ada_catchpoint *c = (struct ada_catchpoint *) bl->owner; | |
11632 | const struct ada_catchpoint_location *ada_loc | |
11633 | = (const struct ada_catchpoint_location *) bl; | |
28010a5d PA |
11634 | int stop; |
11635 | ||
37f6a7f4 TT |
11636 | struct internalvar *var = lookup_internalvar ("_ada_exception"); |
11637 | if (c->m_kind == ada_catch_assert) | |
11638 | clear_internalvar (var); | |
11639 | else | |
11640 | { | |
11641 | try | |
11642 | { | |
11643 | const char *expr; | |
11644 | ||
11645 | if (c->m_kind == ada_catch_handlers) | |
11646 | expr = ("GNAT_GCC_exception_Access(gcc_exception)" | |
11647 | ".all.occurrence.id"); | |
11648 | else | |
11649 | expr = "e"; | |
11650 | ||
11651 | struct value *exc = parse_and_eval (expr); | |
11652 | set_internalvar (var, exc); | |
11653 | } | |
11654 | catch (const gdb_exception_error &ex) | |
11655 | { | |
11656 | clear_internalvar (var); | |
11657 | } | |
11658 | } | |
11659 | ||
28010a5d | 11660 | /* With no specific exception, should always stop. */ |
bc18fbb5 | 11661 | if (c->excep_string.empty ()) |
28010a5d PA |
11662 | return 1; |
11663 | ||
11664 | if (ada_loc->excep_cond_expr == NULL) | |
11665 | { | |
11666 | /* We will have a NULL expression if back when we were creating | |
11667 | the expressions, this location's had failed to parse. */ | |
11668 | return 1; | |
11669 | } | |
11670 | ||
11671 | stop = 1; | |
a70b8144 | 11672 | try |
28010a5d PA |
11673 | { |
11674 | struct value *mark; | |
11675 | ||
11676 | mark = value_mark (); | |
4d01a485 | 11677 | stop = value_true (evaluate_expression (ada_loc->excep_cond_expr.get ())); |
28010a5d PA |
11678 | value_free_to_mark (mark); |
11679 | } | |
230d2906 | 11680 | catch (const gdb_exception &ex) |
492d29ea PA |
11681 | { |
11682 | exception_fprintf (gdb_stderr, ex, | |
11683 | _("Error in testing exception condition:\n")); | |
11684 | } | |
492d29ea | 11685 | |
28010a5d PA |
11686 | return stop; |
11687 | } | |
11688 | ||
11689 | /* Implement the CHECK_STATUS method in the breakpoint_ops structure | |
11690 | for all exception catchpoint kinds. */ | |
11691 | ||
11692 | static void | |
37f6a7f4 | 11693 | check_status_exception (bpstat bs) |
28010a5d | 11694 | { |
b6433ede | 11695 | bs->stop = should_stop_exception (bs->bp_location_at.get ()); |
28010a5d PA |
11696 | } |
11697 | ||
f7f9143b JB |
11698 | /* Implement the PRINT_IT method in the breakpoint_ops structure |
11699 | for all exception catchpoint kinds. */ | |
11700 | ||
11701 | static enum print_stop_action | |
37f6a7f4 | 11702 | print_it_exception (bpstat bs) |
f7f9143b | 11703 | { |
79a45e25 | 11704 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11705 | struct breakpoint *b = bs->breakpoint_at; |
11706 | ||
956a9fb9 | 11707 | annotate_catchpoint (b->number); |
f7f9143b | 11708 | |
112e8700 | 11709 | if (uiout->is_mi_like_p ()) |
f7f9143b | 11710 | { |
112e8700 | 11711 | uiout->field_string ("reason", |
956a9fb9 | 11712 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 11713 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f7f9143b JB |
11714 | } |
11715 | ||
112e8700 SM |
11716 | uiout->text (b->disposition == disp_del |
11717 | ? "\nTemporary catchpoint " : "\nCatchpoint "); | |
381befee | 11718 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 11719 | uiout->text (", "); |
f7f9143b | 11720 | |
45db7c09 PA |
11721 | /* ada_exception_name_addr relies on the selected frame being the |
11722 | current frame. Need to do this here because this function may be | |
11723 | called more than once when printing a stop, and below, we'll | |
11724 | select the first frame past the Ada run-time (see | |
11725 | ada_find_printable_frame). */ | |
11726 | select_frame (get_current_frame ()); | |
11727 | ||
37f6a7f4 TT |
11728 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
11729 | switch (c->m_kind) | |
f7f9143b | 11730 | { |
761269c8 JB |
11731 | case ada_catch_exception: |
11732 | case ada_catch_exception_unhandled: | |
9f757bf7 | 11733 | case ada_catch_handlers: |
956a9fb9 | 11734 | { |
37f6a7f4 | 11735 | const CORE_ADDR addr = ada_exception_name_addr (c->m_kind, b); |
956a9fb9 JB |
11736 | char exception_name[256]; |
11737 | ||
11738 | if (addr != 0) | |
11739 | { | |
c714b426 PA |
11740 | read_memory (addr, (gdb_byte *) exception_name, |
11741 | sizeof (exception_name) - 1); | |
956a9fb9 JB |
11742 | exception_name [sizeof (exception_name) - 1] = '\0'; |
11743 | } | |
11744 | else | |
11745 | { | |
11746 | /* For some reason, we were unable to read the exception | |
11747 | name. This could happen if the Runtime was compiled | |
11748 | without debugging info, for instance. In that case, | |
11749 | just replace the exception name by the generic string | |
11750 | "exception" - it will read as "an exception" in the | |
11751 | notification we are about to print. */ | |
967cff16 | 11752 | memcpy (exception_name, "exception", sizeof ("exception")); |
956a9fb9 JB |
11753 | } |
11754 | /* In the case of unhandled exception breakpoints, we print | |
11755 | the exception name as "unhandled EXCEPTION_NAME", to make | |
11756 | it clearer to the user which kind of catchpoint just got | |
11757 | hit. We used ui_out_text to make sure that this extra | |
11758 | info does not pollute the exception name in the MI case. */ | |
37f6a7f4 | 11759 | if (c->m_kind == ada_catch_exception_unhandled) |
112e8700 SM |
11760 | uiout->text ("unhandled "); |
11761 | uiout->field_string ("exception-name", exception_name); | |
956a9fb9 JB |
11762 | } |
11763 | break; | |
761269c8 | 11764 | case ada_catch_assert: |
956a9fb9 JB |
11765 | /* In this case, the name of the exception is not really |
11766 | important. Just print "failed assertion" to make it clearer | |
11767 | that his program just hit an assertion-failure catchpoint. | |
11768 | We used ui_out_text because this info does not belong in | |
11769 | the MI output. */ | |
112e8700 | 11770 | uiout->text ("failed assertion"); |
956a9fb9 | 11771 | break; |
f7f9143b | 11772 | } |
e547c119 | 11773 | |
6f46ac85 | 11774 | gdb::unique_xmalloc_ptr<char> exception_message = ada_exception_message (); |
e547c119 JB |
11775 | if (exception_message != NULL) |
11776 | { | |
e547c119 | 11777 | uiout->text (" ("); |
6f46ac85 | 11778 | uiout->field_string ("exception-message", exception_message.get ()); |
e547c119 | 11779 | uiout->text (")"); |
e547c119 JB |
11780 | } |
11781 | ||
112e8700 | 11782 | uiout->text (" at "); |
956a9fb9 | 11783 | ada_find_printable_frame (get_current_frame ()); |
f7f9143b JB |
11784 | |
11785 | return PRINT_SRC_AND_LOC; | |
11786 | } | |
11787 | ||
11788 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
11789 | for all exception catchpoint kinds. */ | |
11790 | ||
11791 | static void | |
37f6a7f4 | 11792 | print_one_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 11793 | { |
79a45e25 | 11794 | struct ui_out *uiout = current_uiout; |
28010a5d | 11795 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45b7d TT |
11796 | struct value_print_options opts; |
11797 | ||
11798 | get_user_print_options (&opts); | |
f06f1252 | 11799 | |
79a45b7d | 11800 | if (opts.addressprint) |
f06f1252 | 11801 | uiout->field_skip ("addr"); |
f7f9143b JB |
11802 | |
11803 | annotate_field (5); | |
37f6a7f4 | 11804 | switch (c->m_kind) |
f7f9143b | 11805 | { |
761269c8 | 11806 | case ada_catch_exception: |
dda83cd7 SM |
11807 | if (!c->excep_string.empty ()) |
11808 | { | |
bc18fbb5 TT |
11809 | std::string msg = string_printf (_("`%s' Ada exception"), |
11810 | c->excep_string.c_str ()); | |
28010a5d | 11811 | |
dda83cd7 SM |
11812 | uiout->field_string ("what", msg); |
11813 | } | |
11814 | else | |
11815 | uiout->field_string ("what", "all Ada exceptions"); | |
11816 | ||
11817 | break; | |
f7f9143b | 11818 | |
761269c8 | 11819 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
11820 | uiout->field_string ("what", "unhandled Ada exceptions"); |
11821 | break; | |
f7f9143b | 11822 | |
9f757bf7 | 11823 | case ada_catch_handlers: |
dda83cd7 SM |
11824 | if (!c->excep_string.empty ()) |
11825 | { | |
9f757bf7 XR |
11826 | uiout->field_fmt ("what", |
11827 | _("`%s' Ada exception handlers"), | |
bc18fbb5 | 11828 | c->excep_string.c_str ()); |
dda83cd7 SM |
11829 | } |
11830 | else | |
9f757bf7 | 11831 | uiout->field_string ("what", "all Ada exceptions handlers"); |
dda83cd7 | 11832 | break; |
9f757bf7 | 11833 | |
761269c8 | 11834 | case ada_catch_assert: |
dda83cd7 SM |
11835 | uiout->field_string ("what", "failed Ada assertions"); |
11836 | break; | |
f7f9143b JB |
11837 | |
11838 | default: | |
dda83cd7 SM |
11839 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
11840 | break; | |
f7f9143b JB |
11841 | } |
11842 | } | |
11843 | ||
11844 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
11845 | for all exception catchpoint kinds. */ | |
11846 | ||
11847 | static void | |
37f6a7f4 | 11848 | print_mention_exception (struct breakpoint *b) |
f7f9143b | 11849 | { |
28010a5d | 11850 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45e25 | 11851 | struct ui_out *uiout = current_uiout; |
28010a5d | 11852 | |
112e8700 | 11853 | uiout->text (b->disposition == disp_del ? _("Temporary catchpoint ") |
dda83cd7 | 11854 | : _("Catchpoint ")); |
381befee | 11855 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 11856 | uiout->text (": "); |
00eb2c4a | 11857 | |
37f6a7f4 | 11858 | switch (c->m_kind) |
f7f9143b | 11859 | { |
761269c8 | 11860 | case ada_catch_exception: |
dda83cd7 | 11861 | if (!c->excep_string.empty ()) |
00eb2c4a | 11862 | { |
862d101a | 11863 | std::string info = string_printf (_("`%s' Ada exception"), |
bc18fbb5 | 11864 | c->excep_string.c_str ()); |
862d101a | 11865 | uiout->text (info.c_str ()); |
00eb2c4a | 11866 | } |
dda83cd7 SM |
11867 | else |
11868 | uiout->text (_("all Ada exceptions")); | |
11869 | break; | |
f7f9143b | 11870 | |
761269c8 | 11871 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
11872 | uiout->text (_("unhandled Ada exceptions")); |
11873 | break; | |
9f757bf7 XR |
11874 | |
11875 | case ada_catch_handlers: | |
dda83cd7 | 11876 | if (!c->excep_string.empty ()) |
9f757bf7 XR |
11877 | { |
11878 | std::string info | |
11879 | = string_printf (_("`%s' Ada exception handlers"), | |
bc18fbb5 | 11880 | c->excep_string.c_str ()); |
9f757bf7 XR |
11881 | uiout->text (info.c_str ()); |
11882 | } | |
dda83cd7 SM |
11883 | else |
11884 | uiout->text (_("all Ada exceptions handlers")); | |
11885 | break; | |
9f757bf7 | 11886 | |
761269c8 | 11887 | case ada_catch_assert: |
dda83cd7 SM |
11888 | uiout->text (_("failed Ada assertions")); |
11889 | break; | |
f7f9143b JB |
11890 | |
11891 | default: | |
dda83cd7 SM |
11892 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
11893 | break; | |
f7f9143b JB |
11894 | } |
11895 | } | |
11896 | ||
6149aea9 PA |
11897 | /* Implement the PRINT_RECREATE method in the breakpoint_ops structure |
11898 | for all exception catchpoint kinds. */ | |
11899 | ||
11900 | static void | |
37f6a7f4 | 11901 | print_recreate_exception (struct breakpoint *b, struct ui_file *fp) |
6149aea9 | 11902 | { |
28010a5d PA |
11903 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
11904 | ||
37f6a7f4 | 11905 | switch (c->m_kind) |
6149aea9 | 11906 | { |
761269c8 | 11907 | case ada_catch_exception: |
6149aea9 | 11908 | fprintf_filtered (fp, "catch exception"); |
bc18fbb5 TT |
11909 | if (!c->excep_string.empty ()) |
11910 | fprintf_filtered (fp, " %s", c->excep_string.c_str ()); | |
6149aea9 PA |
11911 | break; |
11912 | ||
761269c8 | 11913 | case ada_catch_exception_unhandled: |
78076abc | 11914 | fprintf_filtered (fp, "catch exception unhandled"); |
6149aea9 PA |
11915 | break; |
11916 | ||
9f757bf7 XR |
11917 | case ada_catch_handlers: |
11918 | fprintf_filtered (fp, "catch handlers"); | |
11919 | break; | |
11920 | ||
761269c8 | 11921 | case ada_catch_assert: |
6149aea9 PA |
11922 | fprintf_filtered (fp, "catch assert"); |
11923 | break; | |
11924 | ||
11925 | default: | |
11926 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
11927 | } | |
d9b3f62e | 11928 | print_recreate_thread (b, fp); |
6149aea9 PA |
11929 | } |
11930 | ||
37f6a7f4 | 11931 | /* Virtual tables for various breakpoint types. */ |
2060206e | 11932 | static struct breakpoint_ops catch_exception_breakpoint_ops; |
2060206e | 11933 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops; |
2060206e | 11934 | static struct breakpoint_ops catch_assert_breakpoint_ops; |
9f757bf7 XR |
11935 | static struct breakpoint_ops catch_handlers_breakpoint_ops; |
11936 | ||
f06f1252 TT |
11937 | /* See ada-lang.h. */ |
11938 | ||
11939 | bool | |
11940 | is_ada_exception_catchpoint (breakpoint *bp) | |
11941 | { | |
11942 | return (bp->ops == &catch_exception_breakpoint_ops | |
11943 | || bp->ops == &catch_exception_unhandled_breakpoint_ops | |
11944 | || bp->ops == &catch_assert_breakpoint_ops | |
11945 | || bp->ops == &catch_handlers_breakpoint_ops); | |
11946 | } | |
11947 | ||
f7f9143b JB |
11948 | /* Split the arguments specified in a "catch exception" command. |
11949 | Set EX to the appropriate catchpoint type. | |
28010a5d | 11950 | Set EXCEP_STRING to the name of the specific exception if |
5845583d | 11951 | specified by the user. |
9f757bf7 XR |
11952 | IS_CATCH_HANDLERS_CMD: True if the arguments are for a |
11953 | "catch handlers" command. False otherwise. | |
5845583d JB |
11954 | If a condition is found at the end of the arguments, the condition |
11955 | expression is stored in COND_STRING (memory must be deallocated | |
11956 | after use). Otherwise COND_STRING is set to NULL. */ | |
f7f9143b JB |
11957 | |
11958 | static void | |
a121b7c1 | 11959 | catch_ada_exception_command_split (const char *args, |
9f757bf7 | 11960 | bool is_catch_handlers_cmd, |
dda83cd7 | 11961 | enum ada_exception_catchpoint_kind *ex, |
bc18fbb5 TT |
11962 | std::string *excep_string, |
11963 | std::string *cond_string) | |
f7f9143b | 11964 | { |
bc18fbb5 | 11965 | std::string exception_name; |
f7f9143b | 11966 | |
bc18fbb5 TT |
11967 | exception_name = extract_arg (&args); |
11968 | if (exception_name == "if") | |
5845583d JB |
11969 | { |
11970 | /* This is not an exception name; this is the start of a condition | |
11971 | expression for a catchpoint on all exceptions. So, "un-get" | |
11972 | this token, and set exception_name to NULL. */ | |
bc18fbb5 | 11973 | exception_name.clear (); |
5845583d JB |
11974 | args -= 2; |
11975 | } | |
f7f9143b | 11976 | |
5845583d | 11977 | /* Check to see if we have a condition. */ |
f7f9143b | 11978 | |
f1735a53 | 11979 | args = skip_spaces (args); |
61012eef | 11980 | if (startswith (args, "if") |
5845583d JB |
11981 | && (isspace (args[2]) || args[2] == '\0')) |
11982 | { | |
11983 | args += 2; | |
f1735a53 | 11984 | args = skip_spaces (args); |
5845583d JB |
11985 | |
11986 | if (args[0] == '\0') | |
dda83cd7 | 11987 | error (_("Condition missing after `if' keyword")); |
bc18fbb5 | 11988 | *cond_string = args; |
5845583d JB |
11989 | |
11990 | args += strlen (args); | |
11991 | } | |
11992 | ||
11993 | /* Check that we do not have any more arguments. Anything else | |
11994 | is unexpected. */ | |
f7f9143b JB |
11995 | |
11996 | if (args[0] != '\0') | |
11997 | error (_("Junk at end of expression")); | |
11998 | ||
9f757bf7 XR |
11999 | if (is_catch_handlers_cmd) |
12000 | { | |
12001 | /* Catch handling of exceptions. */ | |
12002 | *ex = ada_catch_handlers; | |
12003 | *excep_string = exception_name; | |
12004 | } | |
bc18fbb5 | 12005 | else if (exception_name.empty ()) |
f7f9143b JB |
12006 | { |
12007 | /* Catch all exceptions. */ | |
761269c8 | 12008 | *ex = ada_catch_exception; |
bc18fbb5 | 12009 | excep_string->clear (); |
f7f9143b | 12010 | } |
bc18fbb5 | 12011 | else if (exception_name == "unhandled") |
f7f9143b JB |
12012 | { |
12013 | /* Catch unhandled exceptions. */ | |
761269c8 | 12014 | *ex = ada_catch_exception_unhandled; |
bc18fbb5 | 12015 | excep_string->clear (); |
f7f9143b JB |
12016 | } |
12017 | else | |
12018 | { | |
12019 | /* Catch a specific exception. */ | |
761269c8 | 12020 | *ex = ada_catch_exception; |
28010a5d | 12021 | *excep_string = exception_name; |
f7f9143b JB |
12022 | } |
12023 | } | |
12024 | ||
12025 | /* Return the name of the symbol on which we should break in order to | |
12026 | implement a catchpoint of the EX kind. */ | |
12027 | ||
12028 | static const char * | |
761269c8 | 12029 | ada_exception_sym_name (enum ada_exception_catchpoint_kind ex) |
f7f9143b | 12030 | { |
3eecfa55 JB |
12031 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
12032 | ||
12033 | gdb_assert (data->exception_info != NULL); | |
0259addd | 12034 | |
f7f9143b JB |
12035 | switch (ex) |
12036 | { | |
761269c8 | 12037 | case ada_catch_exception: |
dda83cd7 SM |
12038 | return (data->exception_info->catch_exception_sym); |
12039 | break; | |
761269c8 | 12040 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
12041 | return (data->exception_info->catch_exception_unhandled_sym); |
12042 | break; | |
761269c8 | 12043 | case ada_catch_assert: |
dda83cd7 SM |
12044 | return (data->exception_info->catch_assert_sym); |
12045 | break; | |
9f757bf7 | 12046 | case ada_catch_handlers: |
dda83cd7 SM |
12047 | return (data->exception_info->catch_handlers_sym); |
12048 | break; | |
f7f9143b | 12049 | default: |
dda83cd7 SM |
12050 | internal_error (__FILE__, __LINE__, |
12051 | _("unexpected catchpoint kind (%d)"), ex); | |
f7f9143b JB |
12052 | } |
12053 | } | |
12054 | ||
12055 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
12056 | of the EX kind. */ | |
12057 | ||
c0a91b2b | 12058 | static const struct breakpoint_ops * |
761269c8 | 12059 | ada_exception_breakpoint_ops (enum ada_exception_catchpoint_kind ex) |
f7f9143b JB |
12060 | { |
12061 | switch (ex) | |
12062 | { | |
761269c8 | 12063 | case ada_catch_exception: |
dda83cd7 SM |
12064 | return (&catch_exception_breakpoint_ops); |
12065 | break; | |
761269c8 | 12066 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
12067 | return (&catch_exception_unhandled_breakpoint_ops); |
12068 | break; | |
761269c8 | 12069 | case ada_catch_assert: |
dda83cd7 SM |
12070 | return (&catch_assert_breakpoint_ops); |
12071 | break; | |
9f757bf7 | 12072 | case ada_catch_handlers: |
dda83cd7 SM |
12073 | return (&catch_handlers_breakpoint_ops); |
12074 | break; | |
f7f9143b | 12075 | default: |
dda83cd7 SM |
12076 | internal_error (__FILE__, __LINE__, |
12077 | _("unexpected catchpoint kind (%d)"), ex); | |
f7f9143b JB |
12078 | } |
12079 | } | |
12080 | ||
12081 | /* Return the condition that will be used to match the current exception | |
12082 | being raised with the exception that the user wants to catch. This | |
12083 | assumes that this condition is used when the inferior just triggered | |
12084 | an exception catchpoint. | |
cb7de75e | 12085 | EX: the type of catchpoints used for catching Ada exceptions. */ |
f7f9143b | 12086 | |
cb7de75e | 12087 | static std::string |
9f757bf7 | 12088 | ada_exception_catchpoint_cond_string (const char *excep_string, |
dda83cd7 | 12089 | enum ada_exception_catchpoint_kind ex) |
f7f9143b | 12090 | { |
3d0b0fa3 | 12091 | int i; |
fccf9de1 | 12092 | bool is_standard_exc = false; |
cb7de75e | 12093 | std::string result; |
9f757bf7 XR |
12094 | |
12095 | if (ex == ada_catch_handlers) | |
12096 | { | |
12097 | /* For exception handlers catchpoints, the condition string does | |
dda83cd7 | 12098 | not use the same parameter as for the other exceptions. */ |
fccf9de1 TT |
12099 | result = ("long_integer (GNAT_GCC_exception_Access" |
12100 | "(gcc_exception).all.occurrence.id)"); | |
9f757bf7 XR |
12101 | } |
12102 | else | |
fccf9de1 | 12103 | result = "long_integer (e)"; |
3d0b0fa3 | 12104 | |
0963b4bd | 12105 | /* The standard exceptions are a special case. They are defined in |
3d0b0fa3 | 12106 | runtime units that have been compiled without debugging info; if |
28010a5d | 12107 | EXCEP_STRING is the not-fully-qualified name of a standard |
3d0b0fa3 JB |
12108 | exception (e.g. "constraint_error") then, during the evaluation |
12109 | of the condition expression, the symbol lookup on this name would | |
0963b4bd | 12110 | *not* return this standard exception. The catchpoint condition |
3d0b0fa3 JB |
12111 | may then be set only on user-defined exceptions which have the |
12112 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
12113 | ||
12114 | To avoid this unexcepted behavior, these standard exceptions are | |
0963b4bd | 12115 | systematically prefixed by "standard". This means that "catch |
3d0b0fa3 JB |
12116 | exception constraint_error" is rewritten into "catch exception |
12117 | standard.constraint_error". | |
12118 | ||
85102364 | 12119 | If an exception named constraint_error is defined in another package of |
3d0b0fa3 JB |
12120 | the inferior program, then the only way to specify this exception as a |
12121 | breakpoint condition is to use its fully-qualified named: | |
fccf9de1 | 12122 | e.g. my_package.constraint_error. */ |
3d0b0fa3 JB |
12123 | |
12124 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) | |
12125 | { | |
28010a5d | 12126 | if (strcmp (standard_exc [i], excep_string) == 0) |
3d0b0fa3 | 12127 | { |
fccf9de1 | 12128 | is_standard_exc = true; |
9f757bf7 | 12129 | break; |
3d0b0fa3 JB |
12130 | } |
12131 | } | |
9f757bf7 | 12132 | |
fccf9de1 TT |
12133 | result += " = "; |
12134 | ||
12135 | if (is_standard_exc) | |
12136 | string_appendf (result, "long_integer (&standard.%s)", excep_string); | |
12137 | else | |
12138 | string_appendf (result, "long_integer (&%s)", excep_string); | |
9f757bf7 | 12139 | |
9f757bf7 | 12140 | return result; |
f7f9143b JB |
12141 | } |
12142 | ||
12143 | /* Return the symtab_and_line that should be used to insert an exception | |
12144 | catchpoint of the TYPE kind. | |
12145 | ||
28010a5d PA |
12146 | ADDR_STRING returns the name of the function where the real |
12147 | breakpoint that implements the catchpoints is set, depending on the | |
12148 | type of catchpoint we need to create. */ | |
f7f9143b JB |
12149 | |
12150 | static struct symtab_and_line | |
bc18fbb5 | 12151 | ada_exception_sal (enum ada_exception_catchpoint_kind ex, |
cc12f4a8 | 12152 | std::string *addr_string, const struct breakpoint_ops **ops) |
f7f9143b JB |
12153 | { |
12154 | const char *sym_name; | |
12155 | struct symbol *sym; | |
f7f9143b | 12156 | |
0259addd JB |
12157 | /* First, find out which exception support info to use. */ |
12158 | ada_exception_support_info_sniffer (); | |
12159 | ||
12160 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b | 12161 | the Ada exceptions requested by the user. */ |
f7f9143b JB |
12162 | sym_name = ada_exception_sym_name (ex); |
12163 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
12164 | ||
57aff202 JB |
12165 | if (sym == NULL) |
12166 | error (_("Catchpoint symbol not found: %s"), sym_name); | |
12167 | ||
12168 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
12169 | error (_("Unable to insert catchpoint. %s is not a function."), sym_name); | |
f7f9143b JB |
12170 | |
12171 | /* Set ADDR_STRING. */ | |
cc12f4a8 | 12172 | *addr_string = sym_name; |
f7f9143b | 12173 | |
f7f9143b | 12174 | /* Set OPS. */ |
4b9eee8c | 12175 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b | 12176 | |
f17011e0 | 12177 | return find_function_start_sal (sym, 1); |
f7f9143b JB |
12178 | } |
12179 | ||
b4a5b78b | 12180 | /* Create an Ada exception catchpoint. |
f7f9143b | 12181 | |
b4a5b78b | 12182 | EX_KIND is the kind of exception catchpoint to be created. |
5845583d | 12183 | |
bc18fbb5 | 12184 | If EXCEPT_STRING is empty, this catchpoint is expected to trigger |
2df4d1d5 | 12185 | for all exceptions. Otherwise, EXCEPT_STRING indicates the name |
bc18fbb5 | 12186 | of the exception to which this catchpoint applies. |
2df4d1d5 | 12187 | |
bc18fbb5 | 12188 | COND_STRING, if not empty, is the catchpoint condition. |
f7f9143b | 12189 | |
b4a5b78b JB |
12190 | TEMPFLAG, if nonzero, means that the underlying breakpoint |
12191 | should be temporary. | |
28010a5d | 12192 | |
b4a5b78b | 12193 | FROM_TTY is the usual argument passed to all commands implementations. */ |
28010a5d | 12194 | |
349774ef | 12195 | void |
28010a5d | 12196 | create_ada_exception_catchpoint (struct gdbarch *gdbarch, |
761269c8 | 12197 | enum ada_exception_catchpoint_kind ex_kind, |
bc18fbb5 | 12198 | const std::string &excep_string, |
56ecd069 | 12199 | const std::string &cond_string, |
28010a5d | 12200 | int tempflag, |
349774ef | 12201 | int disabled, |
28010a5d PA |
12202 | int from_tty) |
12203 | { | |
cc12f4a8 | 12204 | std::string addr_string; |
b4a5b78b | 12205 | const struct breakpoint_ops *ops = NULL; |
bc18fbb5 | 12206 | struct symtab_and_line sal = ada_exception_sal (ex_kind, &addr_string, &ops); |
28010a5d | 12207 | |
37f6a7f4 | 12208 | std::unique_ptr<ada_catchpoint> c (new ada_catchpoint (ex_kind)); |
cc12f4a8 | 12209 | init_ada_exception_breakpoint (c.get (), gdbarch, sal, addr_string.c_str (), |
349774ef | 12210 | ops, tempflag, disabled, from_tty); |
28010a5d | 12211 | c->excep_string = excep_string; |
9f757bf7 | 12212 | create_excep_cond_exprs (c.get (), ex_kind); |
56ecd069 | 12213 | if (!cond_string.empty ()) |
733d554a | 12214 | set_breakpoint_condition (c.get (), cond_string.c_str (), from_tty, false); |
b270e6f9 | 12215 | install_breakpoint (0, std::move (c), 1); |
f7f9143b JB |
12216 | } |
12217 | ||
9ac4176b PA |
12218 | /* Implement the "catch exception" command. */ |
12219 | ||
12220 | static void | |
eb4c3f4a | 12221 | catch_ada_exception_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
12222 | struct cmd_list_element *command) |
12223 | { | |
a121b7c1 | 12224 | const char *arg = arg_entry; |
9ac4176b PA |
12225 | struct gdbarch *gdbarch = get_current_arch (); |
12226 | int tempflag; | |
761269c8 | 12227 | enum ada_exception_catchpoint_kind ex_kind; |
bc18fbb5 | 12228 | std::string excep_string; |
56ecd069 | 12229 | std::string cond_string; |
9ac4176b PA |
12230 | |
12231 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12232 | ||
12233 | if (!arg) | |
12234 | arg = ""; | |
9f757bf7 | 12235 | catch_ada_exception_command_split (arg, false, &ex_kind, &excep_string, |
bc18fbb5 | 12236 | &cond_string); |
9f757bf7 XR |
12237 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
12238 | excep_string, cond_string, | |
12239 | tempflag, 1 /* enabled */, | |
12240 | from_tty); | |
12241 | } | |
12242 | ||
12243 | /* Implement the "catch handlers" command. */ | |
12244 | ||
12245 | static void | |
12246 | catch_ada_handlers_command (const char *arg_entry, int from_tty, | |
12247 | struct cmd_list_element *command) | |
12248 | { | |
12249 | const char *arg = arg_entry; | |
12250 | struct gdbarch *gdbarch = get_current_arch (); | |
12251 | int tempflag; | |
12252 | enum ada_exception_catchpoint_kind ex_kind; | |
bc18fbb5 | 12253 | std::string excep_string; |
56ecd069 | 12254 | std::string cond_string; |
9f757bf7 XR |
12255 | |
12256 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12257 | ||
12258 | if (!arg) | |
12259 | arg = ""; | |
12260 | catch_ada_exception_command_split (arg, true, &ex_kind, &excep_string, | |
bc18fbb5 | 12261 | &cond_string); |
b4a5b78b JB |
12262 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
12263 | excep_string, cond_string, | |
349774ef JB |
12264 | tempflag, 1 /* enabled */, |
12265 | from_tty); | |
9ac4176b PA |
12266 | } |
12267 | ||
71bed2db TT |
12268 | /* Completion function for the Ada "catch" commands. */ |
12269 | ||
12270 | static void | |
12271 | catch_ada_completer (struct cmd_list_element *cmd, completion_tracker &tracker, | |
12272 | const char *text, const char *word) | |
12273 | { | |
12274 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (NULL); | |
12275 | ||
12276 | for (const ada_exc_info &info : exceptions) | |
12277 | { | |
12278 | if (startswith (info.name, word)) | |
b02f78f9 | 12279 | tracker.add_completion (make_unique_xstrdup (info.name)); |
71bed2db TT |
12280 | } |
12281 | } | |
12282 | ||
b4a5b78b | 12283 | /* Split the arguments specified in a "catch assert" command. |
5845583d | 12284 | |
b4a5b78b JB |
12285 | ARGS contains the command's arguments (or the empty string if |
12286 | no arguments were passed). | |
5845583d JB |
12287 | |
12288 | If ARGS contains a condition, set COND_STRING to that condition | |
b4a5b78b | 12289 | (the memory needs to be deallocated after use). */ |
5845583d | 12290 | |
b4a5b78b | 12291 | static void |
56ecd069 | 12292 | catch_ada_assert_command_split (const char *args, std::string &cond_string) |
f7f9143b | 12293 | { |
f1735a53 | 12294 | args = skip_spaces (args); |
f7f9143b | 12295 | |
5845583d | 12296 | /* Check whether a condition was provided. */ |
61012eef | 12297 | if (startswith (args, "if") |
5845583d | 12298 | && (isspace (args[2]) || args[2] == '\0')) |
f7f9143b | 12299 | { |
5845583d | 12300 | args += 2; |
f1735a53 | 12301 | args = skip_spaces (args); |
5845583d | 12302 | if (args[0] == '\0') |
dda83cd7 | 12303 | error (_("condition missing after `if' keyword")); |
56ecd069 | 12304 | cond_string.assign (args); |
f7f9143b JB |
12305 | } |
12306 | ||
5845583d JB |
12307 | /* Otherwise, there should be no other argument at the end of |
12308 | the command. */ | |
12309 | else if (args[0] != '\0') | |
12310 | error (_("Junk at end of arguments.")); | |
f7f9143b JB |
12311 | } |
12312 | ||
9ac4176b PA |
12313 | /* Implement the "catch assert" command. */ |
12314 | ||
12315 | static void | |
eb4c3f4a | 12316 | catch_assert_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
12317 | struct cmd_list_element *command) |
12318 | { | |
a121b7c1 | 12319 | const char *arg = arg_entry; |
9ac4176b PA |
12320 | struct gdbarch *gdbarch = get_current_arch (); |
12321 | int tempflag; | |
56ecd069 | 12322 | std::string cond_string; |
9ac4176b PA |
12323 | |
12324 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12325 | ||
12326 | if (!arg) | |
12327 | arg = ""; | |
56ecd069 | 12328 | catch_ada_assert_command_split (arg, cond_string); |
761269c8 | 12329 | create_ada_exception_catchpoint (gdbarch, ada_catch_assert, |
241db429 | 12330 | "", cond_string, |
349774ef JB |
12331 | tempflag, 1 /* enabled */, |
12332 | from_tty); | |
9ac4176b | 12333 | } |
778865d3 JB |
12334 | |
12335 | /* Return non-zero if the symbol SYM is an Ada exception object. */ | |
12336 | ||
12337 | static int | |
12338 | ada_is_exception_sym (struct symbol *sym) | |
12339 | { | |
7d93a1e0 | 12340 | const char *type_name = SYMBOL_TYPE (sym)->name (); |
778865d3 JB |
12341 | |
12342 | return (SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
dda83cd7 SM |
12343 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
12344 | && SYMBOL_CLASS (sym) != LOC_CONST | |
12345 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
12346 | && type_name != NULL && strcmp (type_name, "exception") == 0); | |
778865d3 JB |
12347 | } |
12348 | ||
12349 | /* Given a global symbol SYM, return non-zero iff SYM is a non-standard | |
12350 | Ada exception object. This matches all exceptions except the ones | |
12351 | defined by the Ada language. */ | |
12352 | ||
12353 | static int | |
12354 | ada_is_non_standard_exception_sym (struct symbol *sym) | |
12355 | { | |
12356 | int i; | |
12357 | ||
12358 | if (!ada_is_exception_sym (sym)) | |
12359 | return 0; | |
12360 | ||
12361 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
987012b8 | 12362 | if (strcmp (sym->linkage_name (), standard_exc[i]) == 0) |
778865d3 JB |
12363 | return 0; /* A standard exception. */ |
12364 | ||
12365 | /* Numeric_Error is also a standard exception, so exclude it. | |
12366 | See the STANDARD_EXC description for more details as to why | |
12367 | this exception is not listed in that array. */ | |
987012b8 | 12368 | if (strcmp (sym->linkage_name (), "numeric_error") == 0) |
778865d3 JB |
12369 | return 0; |
12370 | ||
12371 | return 1; | |
12372 | } | |
12373 | ||
ab816a27 | 12374 | /* A helper function for std::sort, comparing two struct ada_exc_info |
778865d3 JB |
12375 | objects. |
12376 | ||
12377 | The comparison is determined first by exception name, and then | |
12378 | by exception address. */ | |
12379 | ||
ab816a27 | 12380 | bool |
cc536b21 | 12381 | ada_exc_info::operator< (const ada_exc_info &other) const |
778865d3 | 12382 | { |
778865d3 JB |
12383 | int result; |
12384 | ||
ab816a27 TT |
12385 | result = strcmp (name, other.name); |
12386 | if (result < 0) | |
12387 | return true; | |
12388 | if (result == 0 && addr < other.addr) | |
12389 | return true; | |
12390 | return false; | |
12391 | } | |
778865d3 | 12392 | |
ab816a27 | 12393 | bool |
cc536b21 | 12394 | ada_exc_info::operator== (const ada_exc_info &other) const |
ab816a27 TT |
12395 | { |
12396 | return addr == other.addr && strcmp (name, other.name) == 0; | |
778865d3 JB |
12397 | } |
12398 | ||
12399 | /* Sort EXCEPTIONS using compare_ada_exception_info as the comparison | |
12400 | routine, but keeping the first SKIP elements untouched. | |
12401 | ||
12402 | All duplicates are also removed. */ | |
12403 | ||
12404 | static void | |
ab816a27 | 12405 | sort_remove_dups_ada_exceptions_list (std::vector<ada_exc_info> *exceptions, |
778865d3 JB |
12406 | int skip) |
12407 | { | |
ab816a27 TT |
12408 | std::sort (exceptions->begin () + skip, exceptions->end ()); |
12409 | exceptions->erase (std::unique (exceptions->begin () + skip, exceptions->end ()), | |
12410 | exceptions->end ()); | |
778865d3 JB |
12411 | } |
12412 | ||
778865d3 JB |
12413 | /* Add all exceptions defined by the Ada standard whose name match |
12414 | a regular expression. | |
12415 | ||
12416 | If PREG is not NULL, then this regexp_t object is used to | |
12417 | perform the symbol name matching. Otherwise, no name-based | |
12418 | filtering is performed. | |
12419 | ||
12420 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
12421 | gets pushed. */ | |
12422 | ||
12423 | static void | |
2d7cc5c7 | 12424 | ada_add_standard_exceptions (compiled_regex *preg, |
ab816a27 | 12425 | std::vector<ada_exc_info> *exceptions) |
778865d3 JB |
12426 | { |
12427 | int i; | |
12428 | ||
12429 | for (i = 0; i < ARRAY_SIZE (standard_exc); i++) | |
12430 | { | |
12431 | if (preg == NULL | |
2d7cc5c7 | 12432 | || preg->exec (standard_exc[i], 0, NULL, 0) == 0) |
778865d3 JB |
12433 | { |
12434 | struct bound_minimal_symbol msymbol | |
12435 | = ada_lookup_simple_minsym (standard_exc[i]); | |
12436 | ||
12437 | if (msymbol.minsym != NULL) | |
12438 | { | |
12439 | struct ada_exc_info info | |
77e371c0 | 12440 | = {standard_exc[i], BMSYMBOL_VALUE_ADDRESS (msymbol)}; |
778865d3 | 12441 | |
ab816a27 | 12442 | exceptions->push_back (info); |
778865d3 JB |
12443 | } |
12444 | } | |
12445 | } | |
12446 | } | |
12447 | ||
12448 | /* Add all Ada exceptions defined locally and accessible from the given | |
12449 | FRAME. | |
12450 | ||
12451 | If PREG is not NULL, then this regexp_t object is used to | |
12452 | perform the symbol name matching. Otherwise, no name-based | |
12453 | filtering is performed. | |
12454 | ||
12455 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
12456 | gets pushed. */ | |
12457 | ||
12458 | static void | |
2d7cc5c7 PA |
12459 | ada_add_exceptions_from_frame (compiled_regex *preg, |
12460 | struct frame_info *frame, | |
ab816a27 | 12461 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 12462 | { |
3977b71f | 12463 | const struct block *block = get_frame_block (frame, 0); |
778865d3 JB |
12464 | |
12465 | while (block != 0) | |
12466 | { | |
12467 | struct block_iterator iter; | |
12468 | struct symbol *sym; | |
12469 | ||
12470 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
12471 | { | |
12472 | switch (SYMBOL_CLASS (sym)) | |
12473 | { | |
12474 | case LOC_TYPEDEF: | |
12475 | case LOC_BLOCK: | |
12476 | case LOC_CONST: | |
12477 | break; | |
12478 | default: | |
12479 | if (ada_is_exception_sym (sym)) | |
12480 | { | |
987012b8 | 12481 | struct ada_exc_info info = {sym->print_name (), |
778865d3 JB |
12482 | SYMBOL_VALUE_ADDRESS (sym)}; |
12483 | ||
ab816a27 | 12484 | exceptions->push_back (info); |
778865d3 JB |
12485 | } |
12486 | } | |
12487 | } | |
12488 | if (BLOCK_FUNCTION (block) != NULL) | |
12489 | break; | |
12490 | block = BLOCK_SUPERBLOCK (block); | |
12491 | } | |
12492 | } | |
12493 | ||
14bc53a8 PA |
12494 | /* Return true if NAME matches PREG or if PREG is NULL. */ |
12495 | ||
12496 | static bool | |
2d7cc5c7 | 12497 | name_matches_regex (const char *name, compiled_regex *preg) |
14bc53a8 PA |
12498 | { |
12499 | return (preg == NULL | |
f945dedf | 12500 | || preg->exec (ada_decode (name).c_str (), 0, NULL, 0) == 0); |
14bc53a8 PA |
12501 | } |
12502 | ||
778865d3 JB |
12503 | /* Add all exceptions defined globally whose name name match |
12504 | a regular expression, excluding standard exceptions. | |
12505 | ||
12506 | The reason we exclude standard exceptions is that they need | |
12507 | to be handled separately: Standard exceptions are defined inside | |
12508 | a runtime unit which is normally not compiled with debugging info, | |
12509 | and thus usually do not show up in our symbol search. However, | |
12510 | if the unit was in fact built with debugging info, we need to | |
12511 | exclude them because they would duplicate the entry we found | |
12512 | during the special loop that specifically searches for those | |
12513 | standard exceptions. | |
12514 | ||
12515 | If PREG is not NULL, then this regexp_t object is used to | |
12516 | perform the symbol name matching. Otherwise, no name-based | |
12517 | filtering is performed. | |
12518 | ||
12519 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
12520 | gets pushed. */ | |
12521 | ||
12522 | static void | |
2d7cc5c7 | 12523 | ada_add_global_exceptions (compiled_regex *preg, |
ab816a27 | 12524 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 12525 | { |
14bc53a8 PA |
12526 | /* In Ada, the symbol "search name" is a linkage name, whereas the |
12527 | regular expression used to do the matching refers to the natural | |
12528 | name. So match against the decoded name. */ | |
12529 | expand_symtabs_matching (NULL, | |
b5ec771e | 12530 | lookup_name_info::match_any (), |
14bc53a8 PA |
12531 | [&] (const char *search_name) |
12532 | { | |
f945dedf CB |
12533 | std::string decoded = ada_decode (search_name); |
12534 | return name_matches_regex (decoded.c_str (), preg); | |
14bc53a8 PA |
12535 | }, |
12536 | NULL, | |
03a8ea51 | 12537 | SEARCH_GLOBAL_BLOCK | SEARCH_STATIC_BLOCK, |
14bc53a8 | 12538 | VARIABLES_DOMAIN); |
778865d3 | 12539 | |
2030c079 | 12540 | for (objfile *objfile : current_program_space->objfiles ()) |
778865d3 | 12541 | { |
b669c953 | 12542 | for (compunit_symtab *s : objfile->compunits ()) |
778865d3 | 12543 | { |
d8aeb77f TT |
12544 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (s); |
12545 | int i; | |
778865d3 | 12546 | |
d8aeb77f TT |
12547 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
12548 | { | |
582942f4 | 12549 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
d8aeb77f TT |
12550 | struct block_iterator iter; |
12551 | struct symbol *sym; | |
778865d3 | 12552 | |
d8aeb77f TT |
12553 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
12554 | if (ada_is_non_standard_exception_sym (sym) | |
987012b8 | 12555 | && name_matches_regex (sym->natural_name (), preg)) |
d8aeb77f TT |
12556 | { |
12557 | struct ada_exc_info info | |
987012b8 | 12558 | = {sym->print_name (), SYMBOL_VALUE_ADDRESS (sym)}; |
d8aeb77f TT |
12559 | |
12560 | exceptions->push_back (info); | |
12561 | } | |
12562 | } | |
778865d3 JB |
12563 | } |
12564 | } | |
12565 | } | |
12566 | ||
12567 | /* Implements ada_exceptions_list with the regular expression passed | |
12568 | as a regex_t, rather than a string. | |
12569 | ||
12570 | If not NULL, PREG is used to filter out exceptions whose names | |
12571 | do not match. Otherwise, all exceptions are listed. */ | |
12572 | ||
ab816a27 | 12573 | static std::vector<ada_exc_info> |
2d7cc5c7 | 12574 | ada_exceptions_list_1 (compiled_regex *preg) |
778865d3 | 12575 | { |
ab816a27 | 12576 | std::vector<ada_exc_info> result; |
778865d3 JB |
12577 | int prev_len; |
12578 | ||
12579 | /* First, list the known standard exceptions. These exceptions | |
12580 | need to be handled separately, as they are usually defined in | |
12581 | runtime units that have been compiled without debugging info. */ | |
12582 | ||
12583 | ada_add_standard_exceptions (preg, &result); | |
12584 | ||
12585 | /* Next, find all exceptions whose scope is local and accessible | |
12586 | from the currently selected frame. */ | |
12587 | ||
12588 | if (has_stack_frames ()) | |
12589 | { | |
ab816a27 | 12590 | prev_len = result.size (); |
778865d3 JB |
12591 | ada_add_exceptions_from_frame (preg, get_selected_frame (NULL), |
12592 | &result); | |
ab816a27 | 12593 | if (result.size () > prev_len) |
778865d3 JB |
12594 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
12595 | } | |
12596 | ||
12597 | /* Add all exceptions whose scope is global. */ | |
12598 | ||
ab816a27 | 12599 | prev_len = result.size (); |
778865d3 | 12600 | ada_add_global_exceptions (preg, &result); |
ab816a27 | 12601 | if (result.size () > prev_len) |
778865d3 JB |
12602 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
12603 | ||
778865d3 JB |
12604 | return result; |
12605 | } | |
12606 | ||
12607 | /* Return a vector of ada_exc_info. | |
12608 | ||
12609 | If REGEXP is NULL, all exceptions are included in the result. | |
12610 | Otherwise, it should contain a valid regular expression, | |
12611 | and only the exceptions whose names match that regular expression | |
12612 | are included in the result. | |
12613 | ||
12614 | The exceptions are sorted in the following order: | |
12615 | - Standard exceptions (defined by the Ada language), in | |
12616 | alphabetical order; | |
12617 | - Exceptions only visible from the current frame, in | |
12618 | alphabetical order; | |
12619 | - Exceptions whose scope is global, in alphabetical order. */ | |
12620 | ||
ab816a27 | 12621 | std::vector<ada_exc_info> |
778865d3 JB |
12622 | ada_exceptions_list (const char *regexp) |
12623 | { | |
2d7cc5c7 PA |
12624 | if (regexp == NULL) |
12625 | return ada_exceptions_list_1 (NULL); | |
778865d3 | 12626 | |
2d7cc5c7 PA |
12627 | compiled_regex reg (regexp, REG_NOSUB, _("invalid regular expression")); |
12628 | return ada_exceptions_list_1 (®); | |
778865d3 JB |
12629 | } |
12630 | ||
12631 | /* Implement the "info exceptions" command. */ | |
12632 | ||
12633 | static void | |
1d12d88f | 12634 | info_exceptions_command (const char *regexp, int from_tty) |
778865d3 | 12635 | { |
778865d3 | 12636 | struct gdbarch *gdbarch = get_current_arch (); |
778865d3 | 12637 | |
ab816a27 | 12638 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (regexp); |
778865d3 JB |
12639 | |
12640 | if (regexp != NULL) | |
12641 | printf_filtered | |
12642 | (_("All Ada exceptions matching regular expression \"%s\":\n"), regexp); | |
12643 | else | |
12644 | printf_filtered (_("All defined Ada exceptions:\n")); | |
12645 | ||
ab816a27 TT |
12646 | for (const ada_exc_info &info : exceptions) |
12647 | printf_filtered ("%s: %s\n", info.name, paddress (gdbarch, info.addr)); | |
778865d3 JB |
12648 | } |
12649 | ||
6c038f32 PH |
12650 | \f |
12651 | /* Language vector */ | |
12652 | ||
b5ec771e PA |
12653 | /* symbol_name_matcher_ftype adapter for wild_match. */ |
12654 | ||
12655 | static bool | |
12656 | do_wild_match (const char *symbol_search_name, | |
12657 | const lookup_name_info &lookup_name, | |
a207cff2 | 12658 | completion_match_result *comp_match_res) |
b5ec771e PA |
12659 | { |
12660 | return wild_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
12661 | } | |
12662 | ||
12663 | /* symbol_name_matcher_ftype adapter for full_match. */ | |
12664 | ||
12665 | static bool | |
12666 | do_full_match (const char *symbol_search_name, | |
12667 | const lookup_name_info &lookup_name, | |
a207cff2 | 12668 | completion_match_result *comp_match_res) |
b5ec771e | 12669 | { |
959d6a67 TT |
12670 | const char *lname = lookup_name.ada ().lookup_name ().c_str (); |
12671 | ||
12672 | /* If both symbols start with "_ada_", just let the loop below | |
12673 | handle the comparison. However, if only the symbol name starts | |
12674 | with "_ada_", skip the prefix and let the match proceed as | |
12675 | usual. */ | |
12676 | if (startswith (symbol_search_name, "_ada_") | |
12677 | && !startswith (lname, "_ada")) | |
86b44259 TT |
12678 | symbol_search_name += 5; |
12679 | ||
86b44259 TT |
12680 | int uscore_count = 0; |
12681 | while (*lname != '\0') | |
12682 | { | |
12683 | if (*symbol_search_name != *lname) | |
12684 | { | |
12685 | if (*symbol_search_name == 'B' && uscore_count == 2 | |
12686 | && symbol_search_name[1] == '_') | |
12687 | { | |
12688 | symbol_search_name += 2; | |
12689 | while (isdigit (*symbol_search_name)) | |
12690 | ++symbol_search_name; | |
12691 | if (symbol_search_name[0] == '_' | |
12692 | && symbol_search_name[1] == '_') | |
12693 | { | |
12694 | symbol_search_name += 2; | |
12695 | continue; | |
12696 | } | |
12697 | } | |
12698 | return false; | |
12699 | } | |
12700 | ||
12701 | if (*symbol_search_name == '_') | |
12702 | ++uscore_count; | |
12703 | else | |
12704 | uscore_count = 0; | |
12705 | ||
12706 | ++symbol_search_name; | |
12707 | ++lname; | |
12708 | } | |
12709 | ||
12710 | return is_name_suffix (symbol_search_name); | |
b5ec771e PA |
12711 | } |
12712 | ||
a2cd4f14 JB |
12713 | /* symbol_name_matcher_ftype for exact (verbatim) matches. */ |
12714 | ||
12715 | static bool | |
12716 | do_exact_match (const char *symbol_search_name, | |
12717 | const lookup_name_info &lookup_name, | |
12718 | completion_match_result *comp_match_res) | |
12719 | { | |
12720 | return strcmp (symbol_search_name, ada_lookup_name (lookup_name)) == 0; | |
12721 | } | |
12722 | ||
b5ec771e PA |
12723 | /* Build the Ada lookup name for LOOKUP_NAME. */ |
12724 | ||
12725 | ada_lookup_name_info::ada_lookup_name_info (const lookup_name_info &lookup_name) | |
12726 | { | |
e0802d59 | 12727 | gdb::string_view user_name = lookup_name.name (); |
b5ec771e | 12728 | |
6a780b67 | 12729 | if (!user_name.empty () && user_name[0] == '<') |
b5ec771e PA |
12730 | { |
12731 | if (user_name.back () == '>') | |
e0802d59 | 12732 | m_encoded_name |
5ac58899 | 12733 | = gdb::to_string (user_name.substr (1, user_name.size () - 2)); |
b5ec771e | 12734 | else |
e0802d59 | 12735 | m_encoded_name |
5ac58899 | 12736 | = gdb::to_string (user_name.substr (1, user_name.size () - 1)); |
b5ec771e PA |
12737 | m_encoded_p = true; |
12738 | m_verbatim_p = true; | |
12739 | m_wild_match_p = false; | |
12740 | m_standard_p = false; | |
12741 | } | |
12742 | else | |
12743 | { | |
12744 | m_verbatim_p = false; | |
12745 | ||
e0802d59 | 12746 | m_encoded_p = user_name.find ("__") != gdb::string_view::npos; |
b5ec771e PA |
12747 | |
12748 | if (!m_encoded_p) | |
12749 | { | |
e0802d59 | 12750 | const char *folded = ada_fold_name (user_name); |
5c4258f4 TT |
12751 | m_encoded_name = ada_encode_1 (folded, false); |
12752 | if (m_encoded_name.empty ()) | |
5ac58899 | 12753 | m_encoded_name = gdb::to_string (user_name); |
b5ec771e PA |
12754 | } |
12755 | else | |
5ac58899 | 12756 | m_encoded_name = gdb::to_string (user_name); |
b5ec771e PA |
12757 | |
12758 | /* Handle the 'package Standard' special case. See description | |
12759 | of m_standard_p. */ | |
12760 | if (startswith (m_encoded_name.c_str (), "standard__")) | |
12761 | { | |
12762 | m_encoded_name = m_encoded_name.substr (sizeof ("standard__") - 1); | |
12763 | m_standard_p = true; | |
12764 | } | |
12765 | else | |
12766 | m_standard_p = false; | |
74ccd7f5 | 12767 | |
b5ec771e PA |
12768 | /* If the name contains a ".", then the user is entering a fully |
12769 | qualified entity name, and the match must not be done in wild | |
12770 | mode. Similarly, if the user wants to complete what looks | |
12771 | like an encoded name, the match must not be done in wild | |
12772 | mode. Also, in the standard__ special case always do | |
12773 | non-wild matching. */ | |
12774 | m_wild_match_p | |
12775 | = (lookup_name.match_type () != symbol_name_match_type::FULL | |
12776 | && !m_encoded_p | |
12777 | && !m_standard_p | |
12778 | && user_name.find ('.') == std::string::npos); | |
12779 | } | |
12780 | } | |
12781 | ||
12782 | /* symbol_name_matcher_ftype method for Ada. This only handles | |
12783 | completion mode. */ | |
12784 | ||
12785 | static bool | |
12786 | ada_symbol_name_matches (const char *symbol_search_name, | |
12787 | const lookup_name_info &lookup_name, | |
a207cff2 | 12788 | completion_match_result *comp_match_res) |
74ccd7f5 | 12789 | { |
b5ec771e PA |
12790 | return lookup_name.ada ().matches (symbol_search_name, |
12791 | lookup_name.match_type (), | |
a207cff2 | 12792 | comp_match_res); |
b5ec771e PA |
12793 | } |
12794 | ||
de63c46b PA |
12795 | /* A name matcher that matches the symbol name exactly, with |
12796 | strcmp. */ | |
12797 | ||
12798 | static bool | |
12799 | literal_symbol_name_matcher (const char *symbol_search_name, | |
12800 | const lookup_name_info &lookup_name, | |
12801 | completion_match_result *comp_match_res) | |
12802 | { | |
e0802d59 | 12803 | gdb::string_view name_view = lookup_name.name (); |
de63c46b | 12804 | |
e0802d59 TT |
12805 | if (lookup_name.completion_mode () |
12806 | ? (strncmp (symbol_search_name, name_view.data (), | |
12807 | name_view.size ()) == 0) | |
12808 | : symbol_search_name == name_view) | |
de63c46b PA |
12809 | { |
12810 | if (comp_match_res != NULL) | |
12811 | comp_match_res->set_match (symbol_search_name); | |
12812 | return true; | |
12813 | } | |
12814 | else | |
12815 | return false; | |
12816 | } | |
12817 | ||
c9debfb9 | 12818 | /* Implement the "get_symbol_name_matcher" language_defn method for |
b5ec771e PA |
12819 | Ada. */ |
12820 | ||
12821 | static symbol_name_matcher_ftype * | |
12822 | ada_get_symbol_name_matcher (const lookup_name_info &lookup_name) | |
12823 | { | |
de63c46b PA |
12824 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
12825 | return literal_symbol_name_matcher; | |
12826 | ||
b5ec771e PA |
12827 | if (lookup_name.completion_mode ()) |
12828 | return ada_symbol_name_matches; | |
74ccd7f5 | 12829 | else |
b5ec771e PA |
12830 | { |
12831 | if (lookup_name.ada ().wild_match_p ()) | |
12832 | return do_wild_match; | |
a2cd4f14 JB |
12833 | else if (lookup_name.ada ().verbatim_p ()) |
12834 | return do_exact_match; | |
b5ec771e PA |
12835 | else |
12836 | return do_full_match; | |
12837 | } | |
74ccd7f5 JB |
12838 | } |
12839 | ||
0874fd07 AB |
12840 | /* Class representing the Ada language. */ |
12841 | ||
12842 | class ada_language : public language_defn | |
12843 | { | |
12844 | public: | |
12845 | ada_language () | |
0e25e767 | 12846 | : language_defn (language_ada) |
0874fd07 | 12847 | { /* Nothing. */ } |
5bd40f2a | 12848 | |
6f7664a9 AB |
12849 | /* See language.h. */ |
12850 | ||
12851 | const char *name () const override | |
12852 | { return "ada"; } | |
12853 | ||
12854 | /* See language.h. */ | |
12855 | ||
12856 | const char *natural_name () const override | |
12857 | { return "Ada"; } | |
12858 | ||
e171d6f1 AB |
12859 | /* See language.h. */ |
12860 | ||
12861 | const std::vector<const char *> &filename_extensions () const override | |
12862 | { | |
12863 | static const std::vector<const char *> extensions | |
12864 | = { ".adb", ".ads", ".a", ".ada", ".dg" }; | |
12865 | return extensions; | |
12866 | } | |
12867 | ||
5bd40f2a AB |
12868 | /* Print an array element index using the Ada syntax. */ |
12869 | ||
12870 | void print_array_index (struct type *index_type, | |
12871 | LONGEST index, | |
12872 | struct ui_file *stream, | |
12873 | const value_print_options *options) const override | |
12874 | { | |
12875 | struct value *index_value = val_atr (index_type, index); | |
12876 | ||
00c696a6 | 12877 | value_print (index_value, stream, options); |
5bd40f2a AB |
12878 | fprintf_filtered (stream, " => "); |
12879 | } | |
15e5fd35 AB |
12880 | |
12881 | /* Implement the "read_var_value" language_defn method for Ada. */ | |
12882 | ||
12883 | struct value *read_var_value (struct symbol *var, | |
12884 | const struct block *var_block, | |
12885 | struct frame_info *frame) const override | |
12886 | { | |
12887 | /* The only case where default_read_var_value is not sufficient | |
12888 | is when VAR is a renaming... */ | |
12889 | if (frame != nullptr) | |
12890 | { | |
12891 | const struct block *frame_block = get_frame_block (frame, NULL); | |
12892 | if (frame_block != nullptr && ada_is_renaming_symbol (var)) | |
12893 | return ada_read_renaming_var_value (var, frame_block); | |
12894 | } | |
12895 | ||
12896 | /* This is a typical case where we expect the default_read_var_value | |
12897 | function to work. */ | |
12898 | return language_defn::read_var_value (var, var_block, frame); | |
12899 | } | |
1fb314aa AB |
12900 | |
12901 | /* See language.h. */ | |
12902 | void language_arch_info (struct gdbarch *gdbarch, | |
12903 | struct language_arch_info *lai) const override | |
12904 | { | |
12905 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
12906 | ||
7bea47f0 AB |
12907 | /* Helper function to allow shorter lines below. */ |
12908 | auto add = [&] (struct type *t) | |
12909 | { | |
12910 | lai->add_primitive_type (t); | |
12911 | }; | |
12912 | ||
12913 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12914 | 0, "integer")); | |
12915 | add (arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
12916 | 0, "long_integer")); | |
12917 | add (arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
12918 | 0, "short_integer")); | |
12919 | struct type *char_type = arch_character_type (gdbarch, TARGET_CHAR_BIT, | |
12920 | 0, "character"); | |
12921 | lai->set_string_char_type (char_type); | |
12922 | add (char_type); | |
12923 | add (arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
12924 | "float", gdbarch_float_format (gdbarch))); | |
12925 | add (arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
12926 | "long_float", gdbarch_double_format (gdbarch))); | |
12927 | add (arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
12928 | 0, "long_long_integer")); | |
12929 | add (arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), | |
12930 | "long_long_float", | |
12931 | gdbarch_long_double_format (gdbarch))); | |
12932 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12933 | 0, "natural")); | |
12934 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12935 | 0, "positive")); | |
12936 | add (builtin->builtin_void); | |
12937 | ||
12938 | struct type *system_addr_ptr | |
1fb314aa AB |
12939 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, |
12940 | "void")); | |
7bea47f0 AB |
12941 | system_addr_ptr->set_name ("system__address"); |
12942 | add (system_addr_ptr); | |
1fb314aa AB |
12943 | |
12944 | /* Create the equivalent of the System.Storage_Elements.Storage_Offset | |
12945 | type. This is a signed integral type whose size is the same as | |
12946 | the size of addresses. */ | |
7bea47f0 AB |
12947 | unsigned int addr_length = TYPE_LENGTH (system_addr_ptr); |
12948 | add (arch_integer_type (gdbarch, addr_length * HOST_CHAR_BIT, 0, | |
12949 | "storage_offset")); | |
1fb314aa | 12950 | |
7bea47f0 | 12951 | lai->set_bool_type (builtin->builtin_bool); |
1fb314aa | 12952 | } |
4009ee92 AB |
12953 | |
12954 | /* See language.h. */ | |
12955 | ||
12956 | bool iterate_over_symbols | |
12957 | (const struct block *block, const lookup_name_info &name, | |
12958 | domain_enum domain, | |
12959 | gdb::function_view<symbol_found_callback_ftype> callback) const override | |
12960 | { | |
d1183b06 TT |
12961 | std::vector<struct block_symbol> results |
12962 | = ada_lookup_symbol_list_worker (name, block, domain, 0); | |
4009ee92 AB |
12963 | for (block_symbol &sym : results) |
12964 | { | |
12965 | if (!callback (&sym)) | |
12966 | return false; | |
12967 | } | |
12968 | ||
12969 | return true; | |
12970 | } | |
6f827019 AB |
12971 | |
12972 | /* See language.h. */ | |
12973 | bool sniff_from_mangled_name (const char *mangled, | |
12974 | char **out) const override | |
12975 | { | |
12976 | std::string demangled = ada_decode (mangled); | |
12977 | ||
12978 | *out = NULL; | |
12979 | ||
12980 | if (demangled != mangled && demangled[0] != '<') | |
12981 | { | |
12982 | /* Set the gsymbol language to Ada, but still return 0. | |
12983 | Two reasons for that: | |
12984 | ||
12985 | 1. For Ada, we prefer computing the symbol's decoded name | |
12986 | on the fly rather than pre-compute it, in order to save | |
12987 | memory (Ada projects are typically very large). | |
12988 | ||
12989 | 2. There are some areas in the definition of the GNAT | |
12990 | encoding where, with a bit of bad luck, we might be able | |
12991 | to decode a non-Ada symbol, generating an incorrect | |
12992 | demangled name (Eg: names ending with "TB" for instance | |
12993 | are identified as task bodies and so stripped from | |
12994 | the decoded name returned). | |
12995 | ||
12996 | Returning true, here, but not setting *DEMANGLED, helps us get | |
12997 | a little bit of the best of both worlds. Because we're last, | |
12998 | we should not affect any of the other languages that were | |
12999 | able to demangle the symbol before us; we get to correctly | |
13000 | tag Ada symbols as such; and even if we incorrectly tagged a | |
13001 | non-Ada symbol, which should be rare, any routing through the | |
13002 | Ada language should be transparent (Ada tries to behave much | |
13003 | like C/C++ with non-Ada symbols). */ | |
13004 | return true; | |
13005 | } | |
13006 | ||
13007 | return false; | |
13008 | } | |
fbfb0a46 AB |
13009 | |
13010 | /* See language.h. */ | |
13011 | ||
5399db93 | 13012 | char *demangle_symbol (const char *mangled, int options) const override |
0a50df5d AB |
13013 | { |
13014 | return ada_la_decode (mangled, options); | |
13015 | } | |
13016 | ||
13017 | /* See language.h. */ | |
13018 | ||
fbfb0a46 AB |
13019 | void print_type (struct type *type, const char *varstring, |
13020 | struct ui_file *stream, int show, int level, | |
13021 | const struct type_print_options *flags) const override | |
13022 | { | |
13023 | ada_print_type (type, varstring, stream, show, level, flags); | |
13024 | } | |
c9debfb9 | 13025 | |
53fc67f8 AB |
13026 | /* See language.h. */ |
13027 | ||
13028 | const char *word_break_characters (void) const override | |
13029 | { | |
13030 | return ada_completer_word_break_characters; | |
13031 | } | |
13032 | ||
7e56227d AB |
13033 | /* See language.h. */ |
13034 | ||
13035 | void collect_symbol_completion_matches (completion_tracker &tracker, | |
13036 | complete_symbol_mode mode, | |
13037 | symbol_name_match_type name_match_type, | |
13038 | const char *text, const char *word, | |
13039 | enum type_code code) const override | |
13040 | { | |
13041 | struct symbol *sym; | |
13042 | const struct block *b, *surrounding_static_block = 0; | |
13043 | struct block_iterator iter; | |
13044 | ||
13045 | gdb_assert (code == TYPE_CODE_UNDEF); | |
13046 | ||
13047 | lookup_name_info lookup_name (text, name_match_type, true); | |
13048 | ||
13049 | /* First, look at the partial symtab symbols. */ | |
13050 | expand_symtabs_matching (NULL, | |
13051 | lookup_name, | |
13052 | NULL, | |
13053 | NULL, | |
03a8ea51 | 13054 | SEARCH_GLOBAL_BLOCK | SEARCH_STATIC_BLOCK, |
7e56227d AB |
13055 | ALL_DOMAIN); |
13056 | ||
13057 | /* At this point scan through the misc symbol vectors and add each | |
13058 | symbol you find to the list. Eventually we want to ignore | |
13059 | anything that isn't a text symbol (everything else will be | |
13060 | handled by the psymtab code above). */ | |
13061 | ||
13062 | for (objfile *objfile : current_program_space->objfiles ()) | |
13063 | { | |
13064 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
13065 | { | |
13066 | QUIT; | |
13067 | ||
13068 | if (completion_skip_symbol (mode, msymbol)) | |
13069 | continue; | |
13070 | ||
13071 | language symbol_language = msymbol->language (); | |
13072 | ||
13073 | /* Ada minimal symbols won't have their language set to Ada. If | |
13074 | we let completion_list_add_name compare using the | |
13075 | default/C-like matcher, then when completing e.g., symbols in a | |
13076 | package named "pck", we'd match internal Ada symbols like | |
13077 | "pckS", which are invalid in an Ada expression, unless you wrap | |
13078 | them in '<' '>' to request a verbatim match. | |
13079 | ||
13080 | Unfortunately, some Ada encoded names successfully demangle as | |
13081 | C++ symbols (using an old mangling scheme), such as "name__2Xn" | |
13082 | -> "Xn::name(void)" and thus some Ada minimal symbols end up | |
13083 | with the wrong language set. Paper over that issue here. */ | |
13084 | if (symbol_language == language_auto | |
13085 | || symbol_language == language_cplus) | |
13086 | symbol_language = language_ada; | |
13087 | ||
13088 | completion_list_add_name (tracker, | |
13089 | symbol_language, | |
13090 | msymbol->linkage_name (), | |
13091 | lookup_name, text, word); | |
13092 | } | |
13093 | } | |
13094 | ||
13095 | /* Search upwards from currently selected frame (so that we can | |
13096 | complete on local vars. */ | |
13097 | ||
13098 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
13099 | { | |
13100 | if (!BLOCK_SUPERBLOCK (b)) | |
13101 | surrounding_static_block = b; /* For elmin of dups */ | |
13102 | ||
13103 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13104 | { | |
13105 | if (completion_skip_symbol (mode, sym)) | |
13106 | continue; | |
13107 | ||
13108 | completion_list_add_name (tracker, | |
13109 | sym->language (), | |
13110 | sym->linkage_name (), | |
13111 | lookup_name, text, word); | |
13112 | } | |
13113 | } | |
13114 | ||
13115 | /* Go through the symtabs and check the externs and statics for | |
13116 | symbols which match. */ | |
13117 | ||
13118 | for (objfile *objfile : current_program_space->objfiles ()) | |
13119 | { | |
13120 | for (compunit_symtab *s : objfile->compunits ()) | |
13121 | { | |
13122 | QUIT; | |
13123 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), GLOBAL_BLOCK); | |
13124 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13125 | { | |
13126 | if (completion_skip_symbol (mode, sym)) | |
13127 | continue; | |
13128 | ||
13129 | completion_list_add_name (tracker, | |
13130 | sym->language (), | |
13131 | sym->linkage_name (), | |
13132 | lookup_name, text, word); | |
13133 | } | |
13134 | } | |
13135 | } | |
13136 | ||
13137 | for (objfile *objfile : current_program_space->objfiles ()) | |
13138 | { | |
13139 | for (compunit_symtab *s : objfile->compunits ()) | |
13140 | { | |
13141 | QUIT; | |
13142 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (s), STATIC_BLOCK); | |
13143 | /* Don't do this block twice. */ | |
13144 | if (b == surrounding_static_block) | |
13145 | continue; | |
13146 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13147 | { | |
13148 | if (completion_skip_symbol (mode, sym)) | |
13149 | continue; | |
13150 | ||
13151 | completion_list_add_name (tracker, | |
13152 | sym->language (), | |
13153 | sym->linkage_name (), | |
13154 | lookup_name, text, word); | |
13155 | } | |
13156 | } | |
13157 | } | |
13158 | } | |
13159 | ||
f16a9f57 AB |
13160 | /* See language.h. */ |
13161 | ||
13162 | gdb::unique_xmalloc_ptr<char> watch_location_expression | |
13163 | (struct type *type, CORE_ADDR addr) const override | |
13164 | { | |
13165 | type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); | |
13166 | std::string name = type_to_string (type); | |
13167 | return gdb::unique_xmalloc_ptr<char> | |
13168 | (xstrprintf ("{%s} %s", name.c_str (), core_addr_to_string (addr))); | |
13169 | } | |
13170 | ||
a1d1fa3e AB |
13171 | /* See language.h. */ |
13172 | ||
13173 | void value_print (struct value *val, struct ui_file *stream, | |
13174 | const struct value_print_options *options) const override | |
13175 | { | |
13176 | return ada_value_print (val, stream, options); | |
13177 | } | |
13178 | ||
ebe2334e AB |
13179 | /* See language.h. */ |
13180 | ||
13181 | void value_print_inner | |
13182 | (struct value *val, struct ui_file *stream, int recurse, | |
13183 | const struct value_print_options *options) const override | |
13184 | { | |
13185 | return ada_value_print_inner (val, stream, recurse, options); | |
13186 | } | |
13187 | ||
a78a19b1 AB |
13188 | /* See language.h. */ |
13189 | ||
13190 | struct block_symbol lookup_symbol_nonlocal | |
13191 | (const char *name, const struct block *block, | |
13192 | const domain_enum domain) const override | |
13193 | { | |
13194 | struct block_symbol sym; | |
13195 | ||
13196 | sym = ada_lookup_symbol (name, block_static_block (block), domain); | |
13197 | if (sym.symbol != NULL) | |
13198 | return sym; | |
13199 | ||
13200 | /* If we haven't found a match at this point, try the primitive | |
13201 | types. In other languages, this search is performed before | |
13202 | searching for global symbols in order to short-circuit that | |
13203 | global-symbol search if it happens that the name corresponds | |
13204 | to a primitive type. But we cannot do the same in Ada, because | |
13205 | it is perfectly legitimate for a program to declare a type which | |
13206 | has the same name as a standard type. If looking up a type in | |
13207 | that situation, we have traditionally ignored the primitive type | |
13208 | in favor of user-defined types. This is why, unlike most other | |
13209 | languages, we search the primitive types this late and only after | |
13210 | having searched the global symbols without success. */ | |
13211 | ||
13212 | if (domain == VAR_DOMAIN) | |
13213 | { | |
13214 | struct gdbarch *gdbarch; | |
13215 | ||
13216 | if (block == NULL) | |
13217 | gdbarch = target_gdbarch (); | |
13218 | else | |
13219 | gdbarch = block_gdbarch (block); | |
13220 | sym.symbol | |
13221 | = language_lookup_primitive_type_as_symbol (this, gdbarch, name); | |
13222 | if (sym.symbol != NULL) | |
13223 | return sym; | |
13224 | } | |
13225 | ||
13226 | return {}; | |
13227 | } | |
13228 | ||
87afa652 AB |
13229 | /* See language.h. */ |
13230 | ||
13231 | int parser (struct parser_state *ps) const override | |
13232 | { | |
13233 | warnings_issued = 0; | |
13234 | return ada_parse (ps); | |
13235 | } | |
13236 | ||
ec8cec5b AB |
13237 | /* See language.h. */ |
13238 | ||
13239 | void emitchar (int ch, struct type *chtype, | |
13240 | struct ui_file *stream, int quoter) const override | |
13241 | { | |
13242 | ada_emit_char (ch, chtype, stream, quoter, 1); | |
13243 | } | |
13244 | ||
52b50f2c AB |
13245 | /* See language.h. */ |
13246 | ||
13247 | void printchar (int ch, struct type *chtype, | |
13248 | struct ui_file *stream) const override | |
13249 | { | |
13250 | ada_printchar (ch, chtype, stream); | |
13251 | } | |
13252 | ||
d711ee67 AB |
13253 | /* See language.h. */ |
13254 | ||
13255 | void printstr (struct ui_file *stream, struct type *elttype, | |
13256 | const gdb_byte *string, unsigned int length, | |
13257 | const char *encoding, int force_ellipses, | |
13258 | const struct value_print_options *options) const override | |
13259 | { | |
13260 | ada_printstr (stream, elttype, string, length, encoding, | |
13261 | force_ellipses, options); | |
13262 | } | |
13263 | ||
4ffc13fb AB |
13264 | /* See language.h. */ |
13265 | ||
13266 | void print_typedef (struct type *type, struct symbol *new_symbol, | |
13267 | struct ui_file *stream) const override | |
13268 | { | |
13269 | ada_print_typedef (type, new_symbol, stream); | |
13270 | } | |
13271 | ||
39e7ecca AB |
13272 | /* See language.h. */ |
13273 | ||
13274 | bool is_string_type_p (struct type *type) const override | |
13275 | { | |
13276 | return ada_is_string_type (type); | |
13277 | } | |
13278 | ||
22e3f3ed AB |
13279 | /* See language.h. */ |
13280 | ||
13281 | const char *struct_too_deep_ellipsis () const override | |
13282 | { return "(...)"; } | |
39e7ecca | 13283 | |
67bd3fd5 AB |
13284 | /* See language.h. */ |
13285 | ||
13286 | bool c_style_arrays_p () const override | |
13287 | { return false; } | |
13288 | ||
d3355e4d AB |
13289 | /* See language.h. */ |
13290 | ||
13291 | bool store_sym_names_in_linkage_form_p () const override | |
13292 | { return true; } | |
13293 | ||
b63a3f3f AB |
13294 | /* See language.h. */ |
13295 | ||
13296 | const struct lang_varobj_ops *varobj_ops () const override | |
13297 | { return &ada_varobj_ops; } | |
13298 | ||
c9debfb9 AB |
13299 | protected: |
13300 | /* See language.h. */ | |
13301 | ||
13302 | symbol_name_matcher_ftype *get_symbol_name_matcher_inner | |
13303 | (const lookup_name_info &lookup_name) const override | |
13304 | { | |
13305 | return ada_get_symbol_name_matcher (lookup_name); | |
13306 | } | |
0874fd07 AB |
13307 | }; |
13308 | ||
13309 | /* Single instance of the Ada language class. */ | |
13310 | ||
13311 | static ada_language ada_language_defn; | |
13312 | ||
5bf03f13 JB |
13313 | /* Command-list for the "set/show ada" prefix command. */ |
13314 | static struct cmd_list_element *set_ada_list; | |
13315 | static struct cmd_list_element *show_ada_list; | |
13316 | ||
2060206e PA |
13317 | static void |
13318 | initialize_ada_catchpoint_ops (void) | |
13319 | { | |
13320 | struct breakpoint_ops *ops; | |
13321 | ||
13322 | initialize_breakpoint_ops (); | |
13323 | ||
13324 | ops = &catch_exception_breakpoint_ops; | |
13325 | *ops = bkpt_breakpoint_ops; | |
37f6a7f4 TT |
13326 | ops->allocate_location = allocate_location_exception; |
13327 | ops->re_set = re_set_exception; | |
13328 | ops->check_status = check_status_exception; | |
13329 | ops->print_it = print_it_exception; | |
13330 | ops->print_one = print_one_exception; | |
13331 | ops->print_mention = print_mention_exception; | |
13332 | ops->print_recreate = print_recreate_exception; | |
2060206e PA |
13333 | |
13334 | ops = &catch_exception_unhandled_breakpoint_ops; | |
13335 | *ops = bkpt_breakpoint_ops; | |
37f6a7f4 TT |
13336 | ops->allocate_location = allocate_location_exception; |
13337 | ops->re_set = re_set_exception; | |
13338 | ops->check_status = check_status_exception; | |
13339 | ops->print_it = print_it_exception; | |
13340 | ops->print_one = print_one_exception; | |
13341 | ops->print_mention = print_mention_exception; | |
13342 | ops->print_recreate = print_recreate_exception; | |
2060206e PA |
13343 | |
13344 | ops = &catch_assert_breakpoint_ops; | |
13345 | *ops = bkpt_breakpoint_ops; | |
37f6a7f4 TT |
13346 | ops->allocate_location = allocate_location_exception; |
13347 | ops->re_set = re_set_exception; | |
13348 | ops->check_status = check_status_exception; | |
13349 | ops->print_it = print_it_exception; | |
13350 | ops->print_one = print_one_exception; | |
13351 | ops->print_mention = print_mention_exception; | |
13352 | ops->print_recreate = print_recreate_exception; | |
9f757bf7 XR |
13353 | |
13354 | ops = &catch_handlers_breakpoint_ops; | |
13355 | *ops = bkpt_breakpoint_ops; | |
37f6a7f4 TT |
13356 | ops->allocate_location = allocate_location_exception; |
13357 | ops->re_set = re_set_exception; | |
13358 | ops->check_status = check_status_exception; | |
13359 | ops->print_it = print_it_exception; | |
13360 | ops->print_one = print_one_exception; | |
13361 | ops->print_mention = print_mention_exception; | |
13362 | ops->print_recreate = print_recreate_exception; | |
2060206e PA |
13363 | } |
13364 | ||
3d9434b5 JB |
13365 | /* This module's 'new_objfile' observer. */ |
13366 | ||
13367 | static void | |
13368 | ada_new_objfile_observer (struct objfile *objfile) | |
13369 | { | |
13370 | ada_clear_symbol_cache (); | |
13371 | } | |
13372 | ||
13373 | /* This module's 'free_objfile' observer. */ | |
13374 | ||
13375 | static void | |
13376 | ada_free_objfile_observer (struct objfile *objfile) | |
13377 | { | |
13378 | ada_clear_symbol_cache (); | |
13379 | } | |
13380 | ||
6c265988 | 13381 | void _initialize_ada_language (); |
d2e4a39e | 13382 | void |
6c265988 | 13383 | _initialize_ada_language () |
14f9c5c9 | 13384 | { |
2060206e PA |
13385 | initialize_ada_catchpoint_ops (); |
13386 | ||
0743fc83 TT |
13387 | add_basic_prefix_cmd ("ada", no_class, |
13388 | _("Prefix command for changing Ada-specific settings."), | |
13389 | &set_ada_list, "set ada ", 0, &setlist); | |
5bf03f13 | 13390 | |
0743fc83 TT |
13391 | add_show_prefix_cmd ("ada", no_class, |
13392 | _("Generic command for showing Ada-specific settings."), | |
13393 | &show_ada_list, "show ada ", 0, &showlist); | |
5bf03f13 JB |
13394 | |
13395 | add_setshow_boolean_cmd ("trust-PAD-over-XVS", class_obscure, | |
dda83cd7 | 13396 | &trust_pad_over_xvs, _("\ |
590042fc PW |
13397 | Enable or disable an optimization trusting PAD types over XVS types."), _("\ |
13398 | Show whether an optimization trusting PAD types over XVS types is activated."), | |
dda83cd7 | 13399 | _("\ |
5bf03f13 JB |
13400 | This is related to the encoding used by the GNAT compiler. The debugger\n\ |
13401 | should normally trust the contents of PAD types, but certain older versions\n\ | |
13402 | of GNAT have a bug that sometimes causes the information in the PAD type\n\ | |
13403 | to be incorrect. Turning this setting \"off\" allows the debugger to\n\ | |
13404 | work around this bug. It is always safe to turn this option \"off\", but\n\ | |
13405 | this incurs a slight performance penalty, so it is recommended to NOT change\n\ | |
13406 | this option to \"off\" unless necessary."), | |
dda83cd7 | 13407 | NULL, NULL, &set_ada_list, &show_ada_list); |
5bf03f13 | 13408 | |
d72413e6 PMR |
13409 | add_setshow_boolean_cmd ("print-signatures", class_vars, |
13410 | &print_signatures, _("\ | |
13411 | Enable or disable the output of formal and return types for functions in the \ | |
590042fc | 13412 | overloads selection menu."), _("\ |
d72413e6 | 13413 | Show whether the output of formal and return types for functions in the \ |
590042fc | 13414 | overloads selection menu is activated."), |
d72413e6 PMR |
13415 | NULL, NULL, NULL, &set_ada_list, &show_ada_list); |
13416 | ||
9ac4176b PA |
13417 | add_catch_command ("exception", _("\ |
13418 | Catch Ada exceptions, when raised.\n\ | |
9bf7038b | 13419 | Usage: catch exception [ARG] [if CONDITION]\n\ |
60a90376 JB |
13420 | Without any argument, stop when any Ada exception is raised.\n\ |
13421 | If ARG is \"unhandled\" (without the quotes), only stop when the exception\n\ | |
13422 | being raised does not have a handler (and will therefore lead to the task's\n\ | |
13423 | termination).\n\ | |
13424 | Otherwise, the catchpoint only stops when the name of the exception being\n\ | |
9bf7038b TT |
13425 | raised is the same as ARG.\n\ |
13426 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13427 | exception should cause a stop."), | |
9ac4176b | 13428 | catch_ada_exception_command, |
71bed2db | 13429 | catch_ada_completer, |
9ac4176b PA |
13430 | CATCH_PERMANENT, |
13431 | CATCH_TEMPORARY); | |
9f757bf7 XR |
13432 | |
13433 | add_catch_command ("handlers", _("\ | |
13434 | Catch Ada exceptions, when handled.\n\ | |
9bf7038b TT |
13435 | Usage: catch handlers [ARG] [if CONDITION]\n\ |
13436 | Without any argument, stop when any Ada exception is handled.\n\ | |
13437 | With an argument, catch only exceptions with the given name.\n\ | |
13438 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13439 | exception should cause a stop."), | |
9f757bf7 | 13440 | catch_ada_handlers_command, |
dda83cd7 | 13441 | catch_ada_completer, |
9f757bf7 XR |
13442 | CATCH_PERMANENT, |
13443 | CATCH_TEMPORARY); | |
9ac4176b PA |
13444 | add_catch_command ("assert", _("\ |
13445 | Catch failed Ada assertions, when raised.\n\ | |
9bf7038b TT |
13446 | Usage: catch assert [if CONDITION]\n\ |
13447 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13448 | exception should cause a stop."), | |
9ac4176b | 13449 | catch_assert_command, |
dda83cd7 | 13450 | NULL, |
9ac4176b PA |
13451 | CATCH_PERMANENT, |
13452 | CATCH_TEMPORARY); | |
13453 | ||
6c038f32 | 13454 | varsize_limit = 65536; |
3fcded8f JB |
13455 | add_setshow_uinteger_cmd ("varsize-limit", class_support, |
13456 | &varsize_limit, _("\ | |
13457 | Set the maximum number of bytes allowed in a variable-size object."), _("\ | |
13458 | Show the maximum number of bytes allowed in a variable-size object."), _("\ | |
13459 | Attempts to access an object whose size is not a compile-time constant\n\ | |
13460 | and exceeds this limit will cause an error."), | |
13461 | NULL, NULL, &setlist, &showlist); | |
6c038f32 | 13462 | |
778865d3 JB |
13463 | add_info ("exceptions", info_exceptions_command, |
13464 | _("\ | |
13465 | List all Ada exception names.\n\ | |
9bf7038b | 13466 | Usage: info exceptions [REGEXP]\n\ |
778865d3 JB |
13467 | If a regular expression is passed as an argument, only those matching\n\ |
13468 | the regular expression are listed.")); | |
13469 | ||
0743fc83 TT |
13470 | add_basic_prefix_cmd ("ada", class_maintenance, |
13471 | _("Set Ada maintenance-related variables."), | |
13472 | &maint_set_ada_cmdlist, "maintenance set ada ", | |
13473 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
c6044dd1 | 13474 | |
0743fc83 TT |
13475 | add_show_prefix_cmd ("ada", class_maintenance, |
13476 | _("Show Ada maintenance-related variables."), | |
13477 | &maint_show_ada_cmdlist, "maintenance show ada ", | |
13478 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
c6044dd1 JB |
13479 | |
13480 | add_setshow_boolean_cmd | |
13481 | ("ignore-descriptive-types", class_maintenance, | |
13482 | &ada_ignore_descriptive_types_p, | |
13483 | _("Set whether descriptive types generated by GNAT should be ignored."), | |
13484 | _("Show whether descriptive types generated by GNAT should be ignored."), | |
13485 | _("\ | |
13486 | When enabled, the debugger will stop using the DW_AT_GNAT_descriptive_type\n\ | |
13487 | DWARF attribute."), | |
13488 | NULL, NULL, &maint_set_ada_cmdlist, &maint_show_ada_cmdlist); | |
13489 | ||
459a2e4c TT |
13490 | decoded_names_store = htab_create_alloc (256, htab_hash_string, streq_hash, |
13491 | NULL, xcalloc, xfree); | |
6b69afc4 | 13492 | |
3d9434b5 | 13493 | /* The ada-lang observers. */ |
c90e7d63 SM |
13494 | gdb::observers::new_objfile.attach (ada_new_objfile_observer, "ada-lang"); |
13495 | gdb::observers::free_objfile.attach (ada_free_objfile_observer, "ada-lang"); | |
13496 | gdb::observers::inferior_exit.attach (ada_inferior_exit, "ada-lang"); | |
14f9c5c9 | 13497 | } |