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6e681866 | 1 | /* Ada language support routines for GDB, the GNU debugger. |
10a2c479 | 2 | |
4a94e368 | 3 | Copyright (C) 1992-2022 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> |
d322d6d6 | 23 | #include "gdbsupport/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" |
bf31fd38 | 38 | #include "gdbsupport/gdb_obstack.h" |
4de283e4 TT |
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" |
0f8e2034 | 52 | #include "cli/cli-decode.h" |
4de283e4 | 53 | |
40bc484c | 54 | #include "value.h" |
4de283e4 TT |
55 | #include "mi/mi-common.h" |
56 | #include "arch-utils.h" | |
57 | #include "cli/cli-utils.h" | |
268a13a5 TT |
58 | #include "gdbsupport/function-view.h" |
59 | #include "gdbsupport/byte-vector.h" | |
4de283e4 | 60 | #include <algorithm> |
03070ee9 | 61 | #include "ada-exp.h" |
315e4ebb | 62 | #include "charset.h" |
ccefe4c4 | 63 | |
4c4b4cd2 | 64 | /* Define whether or not the C operator '/' truncates towards zero for |
0963b4bd | 65 | differently signed operands (truncation direction is undefined in C). |
4c4b4cd2 PH |
66 | Copied from valarith.c. */ |
67 | ||
68 | #ifndef TRUNCATION_TOWARDS_ZERO | |
69 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
70 | #endif | |
71 | ||
d2e4a39e | 72 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 73 | |
d2e4a39e | 74 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 75 | |
d2e4a39e | 76 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 81 | |
556bdfd4 | 82 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static struct value *desc_data (struct value *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_arity (struct type *); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 101 | |
40bc484c | 102 | static struct value *make_array_descriptor (struct type *, struct value *); |
14f9c5c9 | 103 | |
d1183b06 | 104 | static void ada_add_block_symbols (std::vector<struct block_symbol> &, |
b5ec771e PA |
105 | const struct block *, |
106 | const lookup_name_info &lookup_name, | |
107 | domain_enum, struct objfile *); | |
14f9c5c9 | 108 | |
d1183b06 TT |
109 | static void ada_add_all_symbols (std::vector<struct block_symbol> &, |
110 | const struct block *, | |
b5ec771e PA |
111 | const lookup_name_info &lookup_name, |
112 | domain_enum, int, int *); | |
22cee43f | 113 | |
d1183b06 | 114 | static int is_nonfunction (const std::vector<struct block_symbol> &); |
14f9c5c9 | 115 | |
d1183b06 TT |
116 | static void add_defn_to_vec (std::vector<struct block_symbol> &, |
117 | struct symbol *, | |
dda83cd7 | 118 | const struct block *); |
14f9c5c9 | 119 | |
d2e4a39e | 120 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 121 | |
4c4b4cd2 | 122 | static const char *ada_decoded_op_name (enum exp_opcode); |
14f9c5c9 | 123 | |
d2e4a39e | 124 | static int numeric_type_p (struct type *); |
14f9c5c9 | 125 | |
d2e4a39e | 126 | static int integer_type_p (struct type *); |
14f9c5c9 | 127 | |
d2e4a39e | 128 | static int scalar_type_p (struct type *); |
14f9c5c9 | 129 | |
d2e4a39e | 130 | static int discrete_type_p (struct type *); |
14f9c5c9 | 131 | |
a121b7c1 | 132 | static struct type *ada_lookup_struct_elt_type (struct type *, const char *, |
dda83cd7 | 133 | int, int); |
4c4b4cd2 | 134 | |
b4ba55a1 | 135 | static struct type *ada_find_parallel_type_with_name (struct type *, |
dda83cd7 | 136 | const char *); |
b4ba55a1 | 137 | |
d2e4a39e | 138 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 139 | |
10a2c479 | 140 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 141 | const gdb_byte *, |
dda83cd7 | 142 | CORE_ADDR, struct value *); |
4c4b4cd2 PH |
143 | |
144 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 145 | |
28c85d6c | 146 | static struct type *to_fixed_range_type (struct type *, struct value *); |
14f9c5c9 | 147 | |
d2e4a39e | 148 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 149 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 150 | |
d2e4a39e | 151 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 152 | |
ad82864c | 153 | static struct type *constrained_packed_array_type (struct type *, long *); |
14f9c5c9 | 154 | |
ad82864c | 155 | static struct type *decode_constrained_packed_array_type (struct type *); |
14f9c5c9 | 156 | |
ad82864c JB |
157 | static long decode_packed_array_bitsize (struct type *); |
158 | ||
159 | static struct value *decode_constrained_packed_array (struct value *); | |
160 | ||
ad82864c | 161 | static int ada_is_unconstrained_packed_array_type (struct type *); |
14f9c5c9 | 162 | |
d2e4a39e | 163 | static struct value *value_subscript_packed (struct value *, int, |
dda83cd7 | 164 | struct value **); |
14f9c5c9 | 165 | |
4c4b4cd2 | 166 | static struct value *coerce_unspec_val_to_type (struct value *, |
dda83cd7 | 167 | struct type *); |
14f9c5c9 | 168 | |
d2e4a39e | 169 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 170 | |
d2e4a39e | 171 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 172 | |
d2e4a39e | 173 | static int is_name_suffix (const char *); |
14f9c5c9 | 174 | |
59c8a30b | 175 | static int advance_wild_match (const char **, const char *, char); |
73589123 | 176 | |
b5ec771e | 177 | static bool wild_match (const char *name, const char *patn); |
14f9c5c9 | 178 | |
d2e4a39e | 179 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 180 | |
4c4b4cd2 PH |
181 | static LONGEST pos_atr (struct value *); |
182 | ||
53a47a3e TT |
183 | static struct value *val_atr (struct type *, LONGEST); |
184 | ||
4c4b4cd2 | 185 | static struct symbol *standard_lookup (const char *, const struct block *, |
dda83cd7 | 186 | domain_enum); |
14f9c5c9 | 187 | |
108d56a4 | 188 | static struct value *ada_search_struct_field (const char *, struct value *, int, |
dda83cd7 | 189 | struct type *); |
4c4b4cd2 | 190 | |
0d5cff50 | 191 | static int find_struct_field (const char *, struct type *, int, |
dda83cd7 | 192 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 | 193 | |
d1183b06 | 194 | static int ada_resolve_function (std::vector<struct block_symbol> &, |
dda83cd7 | 195 | struct value **, int, const char *, |
7056f312 | 196 | struct type *, bool); |
4c4b4cd2 | 197 | |
4c4b4cd2 PH |
198 | static int ada_is_direct_array_type (struct type *); |
199 | ||
52ce6436 PH |
200 | static struct value *ada_index_struct_field (int, struct value *, int, |
201 | struct type *); | |
202 | ||
cf608cc4 | 203 | static void add_component_interval (LONGEST, LONGEST, std::vector<LONGEST> &); |
52ce6436 PH |
204 | |
205 | ||
852dff6c | 206 | static struct type *ada_find_any_type (const char *name); |
b5ec771e PA |
207 | |
208 | static symbol_name_matcher_ftype *ada_get_symbol_name_matcher | |
209 | (const lookup_name_info &lookup_name); | |
210 | ||
4c4b4cd2 PH |
211 | \f |
212 | ||
315e4ebb TT |
213 | /* The character set used for source files. */ |
214 | static const char *ada_source_charset; | |
215 | ||
216 | /* The string "UTF-8". This is here so we can check for the UTF-8 | |
217 | charset using == rather than strcmp. */ | |
218 | static const char ada_utf8[] = "UTF-8"; | |
219 | ||
220 | /* Each entry in the UTF-32 case-folding table is of this form. */ | |
221 | struct utf8_entry | |
222 | { | |
223 | /* The start and end, inclusive, of this range of codepoints. */ | |
224 | uint32_t start, end; | |
225 | /* The delta to apply to get the upper-case form. 0 if this is | |
226 | already upper-case. */ | |
227 | int upper_delta; | |
228 | /* The delta to apply to get the lower-case form. 0 if this is | |
229 | already lower-case. */ | |
230 | int lower_delta; | |
231 | ||
232 | bool operator< (uint32_t val) const | |
233 | { | |
234 | return end < val; | |
235 | } | |
236 | }; | |
237 | ||
238 | static const utf8_entry ada_case_fold[] = | |
239 | { | |
240 | #include "ada-casefold.h" | |
241 | }; | |
242 | ||
243 | \f | |
244 | ||
ee01b665 JB |
245 | /* The result of a symbol lookup to be stored in our symbol cache. */ |
246 | ||
247 | struct cache_entry | |
248 | { | |
249 | /* The name used to perform the lookup. */ | |
250 | const char *name; | |
251 | /* The namespace used during the lookup. */ | |
fe978cb0 | 252 | domain_enum domain; |
ee01b665 JB |
253 | /* The symbol returned by the lookup, or NULL if no matching symbol |
254 | was found. */ | |
255 | struct symbol *sym; | |
256 | /* The block where the symbol was found, or NULL if no matching | |
257 | symbol was found. */ | |
258 | const struct block *block; | |
259 | /* A pointer to the next entry with the same hash. */ | |
260 | struct cache_entry *next; | |
261 | }; | |
262 | ||
263 | /* The Ada symbol cache, used to store the result of Ada-mode symbol | |
264 | lookups in the course of executing the user's commands. | |
265 | ||
266 | The cache is implemented using a simple, fixed-sized hash. | |
267 | The size is fixed on the grounds that there are not likely to be | |
268 | all that many symbols looked up during any given session, regardless | |
269 | of the size of the symbol table. If we decide to go to a resizable | |
270 | table, let's just use the stuff from libiberty instead. */ | |
271 | ||
272 | #define HASH_SIZE 1009 | |
273 | ||
274 | struct ada_symbol_cache | |
275 | { | |
276 | /* An obstack used to store the entries in our cache. */ | |
bdcccc56 | 277 | struct auto_obstack cache_space; |
ee01b665 JB |
278 | |
279 | /* The root of the hash table used to implement our symbol cache. */ | |
bdcccc56 | 280 | struct cache_entry *root[HASH_SIZE] {}; |
ee01b665 JB |
281 | }; |
282 | ||
67cb5b2d | 283 | static const char ada_completer_word_break_characters[] = |
4c4b4cd2 PH |
284 | #ifdef VMS |
285 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
286 | #else | |
14f9c5c9 | 287 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 288 | #endif |
14f9c5c9 | 289 | |
4c4b4cd2 | 290 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 291 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 292 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 293 | |
4c4b4cd2 PH |
294 | /* Limit on the number of warnings to raise per expression evaluation. */ |
295 | static int warning_limit = 2; | |
296 | ||
297 | /* Number of warning messages issued; reset to 0 by cleanups after | |
298 | expression evaluation. */ | |
299 | static int warnings_issued = 0; | |
300 | ||
27087b7f | 301 | static const char * const known_runtime_file_name_patterns[] = { |
4c4b4cd2 PH |
302 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL |
303 | }; | |
304 | ||
27087b7f | 305 | static const char * const known_auxiliary_function_name_patterns[] = { |
4c4b4cd2 PH |
306 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL |
307 | }; | |
308 | ||
c6044dd1 JB |
309 | /* Maintenance-related settings for this module. */ |
310 | ||
311 | static struct cmd_list_element *maint_set_ada_cmdlist; | |
312 | static struct cmd_list_element *maint_show_ada_cmdlist; | |
313 | ||
c6044dd1 JB |
314 | /* The "maintenance ada set/show ignore-descriptive-type" value. */ |
315 | ||
491144b5 | 316 | static bool ada_ignore_descriptive_types_p = false; |
c6044dd1 | 317 | |
e802dbe0 JB |
318 | /* Inferior-specific data. */ |
319 | ||
320 | /* Per-inferior data for this module. */ | |
321 | ||
322 | struct ada_inferior_data | |
323 | { | |
324 | /* The ada__tags__type_specific_data type, which is used when decoding | |
325 | tagged types. With older versions of GNAT, this type was directly | |
326 | accessible through a component ("tsd") in the object tag. But this | |
327 | is no longer the case, so we cache it for each inferior. */ | |
f37b313d | 328 | struct type *tsd_type = nullptr; |
3eecfa55 JB |
329 | |
330 | /* The exception_support_info data. This data is used to determine | |
331 | how to implement support for Ada exception catchpoints in a given | |
332 | inferior. */ | |
f37b313d | 333 | const struct exception_support_info *exception_info = nullptr; |
e802dbe0 JB |
334 | }; |
335 | ||
336 | /* Our key to this module's inferior data. */ | |
f37b313d | 337 | static const struct inferior_key<ada_inferior_data> ada_inferior_data; |
e802dbe0 JB |
338 | |
339 | /* Return our inferior data for the given inferior (INF). | |
340 | ||
341 | This function always returns a valid pointer to an allocated | |
342 | ada_inferior_data structure. If INF's inferior data has not | |
343 | been previously set, this functions creates a new one with all | |
344 | fields set to zero, sets INF's inferior to it, and then returns | |
345 | a pointer to that newly allocated ada_inferior_data. */ | |
346 | ||
347 | static struct ada_inferior_data * | |
348 | get_ada_inferior_data (struct inferior *inf) | |
349 | { | |
350 | struct ada_inferior_data *data; | |
351 | ||
f37b313d | 352 | data = ada_inferior_data.get (inf); |
e802dbe0 | 353 | if (data == NULL) |
f37b313d | 354 | data = ada_inferior_data.emplace (inf); |
e802dbe0 JB |
355 | |
356 | return data; | |
357 | } | |
358 | ||
359 | /* Perform all necessary cleanups regarding our module's inferior data | |
360 | that is required after the inferior INF just exited. */ | |
361 | ||
362 | static void | |
363 | ada_inferior_exit (struct inferior *inf) | |
364 | { | |
f37b313d | 365 | ada_inferior_data.clear (inf); |
e802dbe0 JB |
366 | } |
367 | ||
ee01b665 JB |
368 | |
369 | /* program-space-specific data. */ | |
370 | ||
371 | /* This module's per-program-space data. */ | |
372 | struct ada_pspace_data | |
373 | { | |
374 | /* The Ada symbol cache. */ | |
bdcccc56 | 375 | std::unique_ptr<ada_symbol_cache> sym_cache; |
ee01b665 JB |
376 | }; |
377 | ||
378 | /* Key to our per-program-space data. */ | |
f37b313d | 379 | static const struct program_space_key<ada_pspace_data> ada_pspace_data_handle; |
ee01b665 JB |
380 | |
381 | /* Return this module's data for the given program space (PSPACE). | |
382 | If not is found, add a zero'ed one now. | |
383 | ||
384 | This function always returns a valid object. */ | |
385 | ||
386 | static struct ada_pspace_data * | |
387 | get_ada_pspace_data (struct program_space *pspace) | |
388 | { | |
389 | struct ada_pspace_data *data; | |
390 | ||
f37b313d | 391 | data = ada_pspace_data_handle.get (pspace); |
ee01b665 | 392 | if (data == NULL) |
f37b313d | 393 | data = ada_pspace_data_handle.emplace (pspace); |
ee01b665 JB |
394 | |
395 | return data; | |
396 | } | |
397 | ||
dda83cd7 | 398 | /* Utilities */ |
4c4b4cd2 | 399 | |
720d1a40 | 400 | /* If TYPE is a TYPE_CODE_TYPEDEF type, return the target type after |
eed9788b | 401 | all typedef layers have been peeled. Otherwise, return TYPE. |
720d1a40 JB |
402 | |
403 | Normally, we really expect a typedef type to only have 1 typedef layer. | |
404 | In other words, we really expect the target type of a typedef type to be | |
405 | a non-typedef type. This is particularly true for Ada units, because | |
406 | the language does not have a typedef vs not-typedef distinction. | |
407 | In that respect, the Ada compiler has been trying to eliminate as many | |
408 | typedef definitions in the debugging information, since they generally | |
409 | do not bring any extra information (we still use typedef under certain | |
410 | circumstances related mostly to the GNAT encoding). | |
411 | ||
412 | Unfortunately, we have seen situations where the debugging information | |
413 | generated by the compiler leads to such multiple typedef layers. For | |
414 | instance, consider the following example with stabs: | |
415 | ||
416 | .stabs "pck__float_array___XUP:Tt(0,46)=s16P_ARRAY:(0,47)=[...]"[...] | |
417 | .stabs "pck__float_array___XUP:t(0,36)=(0,46)",128,0,6,0 | |
418 | ||
419 | This is an error in the debugging information which causes type | |
420 | pck__float_array___XUP to be defined twice, and the second time, | |
421 | it is defined as a typedef of a typedef. | |
422 | ||
423 | This is on the fringe of legality as far as debugging information is | |
424 | concerned, and certainly unexpected. But it is easy to handle these | |
425 | situations correctly, so we can afford to be lenient in this case. */ | |
426 | ||
427 | static struct type * | |
428 | ada_typedef_target_type (struct type *type) | |
429 | { | |
78134374 | 430 | while (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
431 | type = TYPE_TARGET_TYPE (type); |
432 | return type; | |
433 | } | |
434 | ||
41d27058 JB |
435 | /* Given DECODED_NAME a string holding a symbol name in its |
436 | decoded form (ie using the Ada dotted notation), returns | |
437 | its unqualified name. */ | |
438 | ||
439 | static const char * | |
440 | ada_unqualified_name (const char *decoded_name) | |
441 | { | |
2b0f535a JB |
442 | const char *result; |
443 | ||
444 | /* If the decoded name starts with '<', it means that the encoded | |
445 | name does not follow standard naming conventions, and thus that | |
446 | it is not your typical Ada symbol name. Trying to unqualify it | |
447 | is therefore pointless and possibly erroneous. */ | |
448 | if (decoded_name[0] == '<') | |
449 | return decoded_name; | |
450 | ||
451 | result = strrchr (decoded_name, '.'); | |
41d27058 JB |
452 | if (result != NULL) |
453 | result++; /* Skip the dot... */ | |
454 | else | |
455 | result = decoded_name; | |
456 | ||
457 | return result; | |
458 | } | |
459 | ||
39e7af3e | 460 | /* Return a string starting with '<', followed by STR, and '>'. */ |
41d27058 | 461 | |
39e7af3e | 462 | static std::string |
41d27058 JB |
463 | add_angle_brackets (const char *str) |
464 | { | |
39e7af3e | 465 | return string_printf ("<%s>", str); |
41d27058 | 466 | } |
96d887e8 | 467 | |
14f9c5c9 | 468 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing |
4c4b4cd2 | 469 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
470 | |
471 | static int | |
ebf56fd3 | 472 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
473 | { |
474 | int len = strlen (target); | |
5b4ee69b | 475 | |
d2e4a39e | 476 | return |
4c4b4cd2 PH |
477 | (strncmp (field_name, target, len) == 0 |
478 | && (field_name[len] == '\0' | |
dda83cd7 SM |
479 | || (startswith (field_name + len, "___") |
480 | && strcmp (field_name + strlen (field_name) - 6, | |
481 | "___XVN") != 0))); | |
14f9c5c9 AS |
482 | } |
483 | ||
484 | ||
872c8b51 JB |
485 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
486 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
487 | and return its index. This function also handles fields whose name | |
488 | have ___ suffixes because the compiler sometimes alters their name | |
489 | by adding such a suffix to represent fields with certain constraints. | |
490 | If the field could not be found, return a negative number if | |
491 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
492 | |
493 | int | |
494 | ada_get_field_index (const struct type *type, const char *field_name, | |
dda83cd7 | 495 | int maybe_missing) |
4c4b4cd2 PH |
496 | { |
497 | int fieldno; | |
872c8b51 JB |
498 | struct type *struct_type = check_typedef ((struct type *) type); |
499 | ||
1f704f76 | 500 | for (fieldno = 0; fieldno < struct_type->num_fields (); fieldno++) |
33d16dd9 | 501 | if (field_name_match (struct_type->field (fieldno).name (), field_name)) |
4c4b4cd2 PH |
502 | return fieldno; |
503 | ||
504 | if (!maybe_missing) | |
323e0a4a | 505 | error (_("Unable to find field %s in struct %s. Aborting"), |
dda83cd7 | 506 | field_name, struct_type->name ()); |
4c4b4cd2 PH |
507 | |
508 | return -1; | |
509 | } | |
510 | ||
511 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
512 | |
513 | int | |
d2e4a39e | 514 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
515 | { |
516 | if (name == NULL) | |
517 | return 0; | |
d2e4a39e | 518 | else |
14f9c5c9 | 519 | { |
d2e4a39e | 520 | const char *p = strstr (name, "___"); |
5b4ee69b | 521 | |
14f9c5c9 | 522 | if (p == NULL) |
dda83cd7 | 523 | return strlen (name); |
14f9c5c9 | 524 | else |
dda83cd7 | 525 | return p - name; |
14f9c5c9 AS |
526 | } |
527 | } | |
528 | ||
4c4b4cd2 PH |
529 | /* Return non-zero if SUFFIX is a suffix of STR. |
530 | Return zero if STR is null. */ | |
531 | ||
14f9c5c9 | 532 | static int |
d2e4a39e | 533 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
534 | { |
535 | int len1, len2; | |
5b4ee69b | 536 | |
14f9c5c9 AS |
537 | if (str == NULL) |
538 | return 0; | |
539 | len1 = strlen (str); | |
540 | len2 = strlen (suffix); | |
4c4b4cd2 | 541 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
542 | } |
543 | ||
4c4b4cd2 PH |
544 | /* The contents of value VAL, treated as a value of type TYPE. The |
545 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 546 | |
d2e4a39e | 547 | static struct value * |
4c4b4cd2 | 548 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 549 | { |
61ee279c | 550 | type = ada_check_typedef (type); |
df407dfe | 551 | if (value_type (val) == type) |
4c4b4cd2 | 552 | return val; |
d2e4a39e | 553 | else |
14f9c5c9 | 554 | { |
4c4b4cd2 PH |
555 | struct value *result; |
556 | ||
f73e424f TT |
557 | if (value_optimized_out (val)) |
558 | result = allocate_optimized_out_value (type); | |
559 | else if (value_lazy (val) | |
560 | /* Be careful not to make a lazy not_lval value. */ | |
561 | || (VALUE_LVAL (val) != not_lval | |
562 | && TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val)))) | |
41e8491f JK |
563 | result = allocate_value_lazy (type); |
564 | else | |
565 | { | |
566 | result = allocate_value (type); | |
f73e424f | 567 | value_contents_copy (result, 0, val, 0, TYPE_LENGTH (type)); |
41e8491f | 568 | } |
74bcbdf3 | 569 | set_value_component_location (result, val); |
9bbda503 AC |
570 | set_value_bitsize (result, value_bitsize (val)); |
571 | set_value_bitpos (result, value_bitpos (val)); | |
c408a94f TT |
572 | if (VALUE_LVAL (result) == lval_memory) |
573 | set_value_address (result, value_address (val)); | |
14f9c5c9 AS |
574 | return result; |
575 | } | |
576 | } | |
577 | ||
fc1a4b47 AC |
578 | static const gdb_byte * |
579 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
580 | { |
581 | if (valaddr == NULL) | |
582 | return NULL; | |
583 | else | |
584 | return valaddr + offset; | |
585 | } | |
586 | ||
587 | static CORE_ADDR | |
ebf56fd3 | 588 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
589 | { |
590 | if (address == 0) | |
591 | return 0; | |
d2e4a39e | 592 | else |
14f9c5c9 AS |
593 | return address + offset; |
594 | } | |
595 | ||
4c4b4cd2 PH |
596 | /* Issue a warning (as for the definition of warning in utils.c, but |
597 | with exactly one argument rather than ...), unless the limit on the | |
598 | number of warnings has passed during the evaluation of the current | |
599 | expression. */ | |
a2249542 | 600 | |
77109804 AC |
601 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
602 | provided by "complaint". */ | |
a0b31db1 | 603 | static void lim_warning (const char *format, ...) ATTRIBUTE_PRINTF (1, 2); |
77109804 | 604 | |
14f9c5c9 | 605 | static void |
a2249542 | 606 | lim_warning (const char *format, ...) |
14f9c5c9 | 607 | { |
a2249542 | 608 | va_list args; |
a2249542 | 609 | |
5b4ee69b | 610 | va_start (args, format); |
4c4b4cd2 PH |
611 | warnings_issued += 1; |
612 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
613 | vwarning (format, args); |
614 | ||
615 | va_end (args); | |
4c4b4cd2 PH |
616 | } |
617 | ||
0963b4bd | 618 | /* Maximum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 619 | static LONGEST |
c3e5cd34 | 620 | max_of_size (int size) |
4c4b4cd2 | 621 | { |
76a01679 | 622 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
5b4ee69b | 623 | |
76a01679 | 624 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
625 | } |
626 | ||
0963b4bd | 627 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 628 | static LONGEST |
c3e5cd34 | 629 | min_of_size (int size) |
4c4b4cd2 | 630 | { |
c3e5cd34 | 631 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
632 | } |
633 | ||
0963b4bd | 634 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 635 | static ULONGEST |
c3e5cd34 | 636 | umax_of_size (int size) |
4c4b4cd2 | 637 | { |
76a01679 | 638 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
5b4ee69b | 639 | |
76a01679 | 640 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
641 | } |
642 | ||
0963b4bd | 643 | /* Maximum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
644 | static LONGEST |
645 | max_of_type (struct type *t) | |
4c4b4cd2 | 646 | { |
c6d940a9 | 647 | if (t->is_unsigned ()) |
c3e5cd34 PH |
648 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); |
649 | else | |
650 | return max_of_size (TYPE_LENGTH (t)); | |
651 | } | |
652 | ||
0963b4bd | 653 | /* Minimum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
654 | static LONGEST |
655 | min_of_type (struct type *t) | |
656 | { | |
c6d940a9 | 657 | if (t->is_unsigned ()) |
c3e5cd34 PH |
658 | return 0; |
659 | else | |
660 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
661 | } |
662 | ||
663 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
43bbcdc2 PH |
664 | LONGEST |
665 | ada_discrete_type_high_bound (struct type *type) | |
4c4b4cd2 | 666 | { |
b249d2c2 | 667 | type = resolve_dynamic_type (type, {}, 0); |
78134374 | 668 | switch (type->code ()) |
4c4b4cd2 PH |
669 | { |
670 | case TYPE_CODE_RANGE: | |
d1fd641e SM |
671 | { |
672 | const dynamic_prop &high = type->bounds ()->high; | |
673 | ||
674 | if (high.kind () == PROP_CONST) | |
675 | return high.const_val (); | |
676 | else | |
677 | { | |
678 | gdb_assert (high.kind () == PROP_UNDEFINED); | |
679 | ||
680 | /* This happens when trying to evaluate a type's dynamic bound | |
681 | without a live target. There is nothing relevant for us to | |
682 | return here, so return 0. */ | |
683 | return 0; | |
684 | } | |
685 | } | |
4c4b4cd2 | 686 | case TYPE_CODE_ENUM: |
970db518 | 687 | return type->field (type->num_fields () - 1).loc_enumval (); |
690cc4eb PH |
688 | case TYPE_CODE_BOOL: |
689 | return 1; | |
690 | case TYPE_CODE_CHAR: | |
76a01679 | 691 | case TYPE_CODE_INT: |
690cc4eb | 692 | return max_of_type (type); |
4c4b4cd2 | 693 | default: |
43bbcdc2 | 694 | error (_("Unexpected type in ada_discrete_type_high_bound.")); |
4c4b4cd2 PH |
695 | } |
696 | } | |
697 | ||
14e75d8e | 698 | /* The smallest value in the domain of TYPE, a discrete type, as an integer. */ |
43bbcdc2 PH |
699 | LONGEST |
700 | ada_discrete_type_low_bound (struct type *type) | |
4c4b4cd2 | 701 | { |
b249d2c2 | 702 | type = resolve_dynamic_type (type, {}, 0); |
78134374 | 703 | switch (type->code ()) |
4c4b4cd2 PH |
704 | { |
705 | case TYPE_CODE_RANGE: | |
d1fd641e SM |
706 | { |
707 | const dynamic_prop &low = type->bounds ()->low; | |
708 | ||
709 | if (low.kind () == PROP_CONST) | |
710 | return low.const_val (); | |
711 | else | |
712 | { | |
713 | gdb_assert (low.kind () == PROP_UNDEFINED); | |
714 | ||
715 | /* This happens when trying to evaluate a type's dynamic bound | |
716 | without a live target. There is nothing relevant for us to | |
717 | return here, so return 0. */ | |
718 | return 0; | |
719 | } | |
720 | } | |
4c4b4cd2 | 721 | case TYPE_CODE_ENUM: |
970db518 | 722 | return type->field (0).loc_enumval (); |
690cc4eb PH |
723 | case TYPE_CODE_BOOL: |
724 | return 0; | |
725 | case TYPE_CODE_CHAR: | |
76a01679 | 726 | case TYPE_CODE_INT: |
690cc4eb | 727 | return min_of_type (type); |
4c4b4cd2 | 728 | default: |
43bbcdc2 | 729 | error (_("Unexpected type in ada_discrete_type_low_bound.")); |
4c4b4cd2 PH |
730 | } |
731 | } | |
732 | ||
733 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 734 | non-range scalar type. */ |
4c4b4cd2 PH |
735 | |
736 | static struct type * | |
18af8284 | 737 | get_base_type (struct type *type) |
4c4b4cd2 | 738 | { |
78134374 | 739 | while (type != NULL && type->code () == TYPE_CODE_RANGE) |
4c4b4cd2 | 740 | { |
76a01679 | 741 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
dda83cd7 | 742 | return type; |
4c4b4cd2 PH |
743 | type = TYPE_TARGET_TYPE (type); |
744 | } | |
745 | return type; | |
14f9c5c9 | 746 | } |
41246937 JB |
747 | |
748 | /* Return a decoded version of the given VALUE. This means returning | |
749 | a value whose type is obtained by applying all the GNAT-specific | |
85102364 | 750 | encodings, making the resulting type a static but standard description |
41246937 JB |
751 | of the initial type. */ |
752 | ||
753 | struct value * | |
754 | ada_get_decoded_value (struct value *value) | |
755 | { | |
756 | struct type *type = ada_check_typedef (value_type (value)); | |
757 | ||
758 | if (ada_is_array_descriptor_type (type) | |
759 | || (ada_is_constrained_packed_array_type (type) | |
dda83cd7 | 760 | && type->code () != TYPE_CODE_PTR)) |
41246937 | 761 | { |
78134374 | 762 | if (type->code () == TYPE_CODE_TYPEDEF) /* array access type. */ |
dda83cd7 | 763 | value = ada_coerce_to_simple_array_ptr (value); |
41246937 | 764 | else |
dda83cd7 | 765 | value = ada_coerce_to_simple_array (value); |
41246937 JB |
766 | } |
767 | else | |
768 | value = ada_to_fixed_value (value); | |
769 | ||
770 | return value; | |
771 | } | |
772 | ||
773 | /* Same as ada_get_decoded_value, but with the given TYPE. | |
774 | Because there is no associated actual value for this type, | |
775 | the resulting type might be a best-effort approximation in | |
776 | the case of dynamic types. */ | |
777 | ||
778 | struct type * | |
779 | ada_get_decoded_type (struct type *type) | |
780 | { | |
781 | type = to_static_fixed_type (type); | |
782 | if (ada_is_constrained_packed_array_type (type)) | |
783 | type = ada_coerce_to_simple_array_type (type); | |
784 | return type; | |
785 | } | |
786 | ||
4c4b4cd2 | 787 | \f |
76a01679 | 788 | |
dda83cd7 | 789 | /* Language Selection */ |
14f9c5c9 AS |
790 | |
791 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
ccefe4c4 | 792 | (the main program is in Ada iif the adainit symbol is found). */ |
d2e4a39e | 793 | |
de93309a | 794 | static enum language |
ccefe4c4 | 795 | ada_update_initial_language (enum language lang) |
14f9c5c9 | 796 | { |
cafb3438 | 797 | if (lookup_minimal_symbol ("adainit", NULL, NULL).minsym != NULL) |
4c4b4cd2 | 798 | return language_ada; |
14f9c5c9 AS |
799 | |
800 | return lang; | |
801 | } | |
96d887e8 PH |
802 | |
803 | /* If the main procedure is written in Ada, then return its name. | |
804 | The result is good until the next call. Return NULL if the main | |
805 | procedure doesn't appear to be in Ada. */ | |
806 | ||
807 | char * | |
808 | ada_main_name (void) | |
809 | { | |
3b7344d5 | 810 | struct bound_minimal_symbol msym; |
e83e4e24 | 811 | static gdb::unique_xmalloc_ptr<char> main_program_name; |
6c038f32 | 812 | |
96d887e8 PH |
813 | /* For Ada, the name of the main procedure is stored in a specific |
814 | string constant, generated by the binder. Look for that symbol, | |
815 | extract its address, and then read that string. If we didn't find | |
816 | that string, then most probably the main procedure is not written | |
817 | in Ada. */ | |
818 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
819 | ||
3b7344d5 | 820 | if (msym.minsym != NULL) |
96d887e8 | 821 | { |
66920317 | 822 | CORE_ADDR main_program_name_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
96d887e8 | 823 | if (main_program_name_addr == 0) |
dda83cd7 | 824 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 825 | |
66920317 | 826 | main_program_name = target_read_string (main_program_name_addr, 1024); |
e83e4e24 | 827 | return main_program_name.get (); |
96d887e8 PH |
828 | } |
829 | ||
830 | /* The main procedure doesn't seem to be in Ada. */ | |
831 | return NULL; | |
832 | } | |
14f9c5c9 | 833 | \f |
dda83cd7 | 834 | /* Symbols */ |
d2e4a39e | 835 | |
4c4b4cd2 PH |
836 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
837 | of NULLs. */ | |
14f9c5c9 | 838 | |
d2e4a39e AS |
839 | const struct ada_opname_map ada_opname_table[] = { |
840 | {"Oadd", "\"+\"", BINOP_ADD}, | |
841 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
842 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
843 | {"Odivide", "\"/\"", BINOP_DIV}, | |
844 | {"Omod", "\"mod\"", BINOP_MOD}, | |
845 | {"Orem", "\"rem\"", BINOP_REM}, | |
846 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
847 | {"Olt", "\"<\"", BINOP_LESS}, | |
848 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
849 | {"Ogt", "\">\"", BINOP_GTR}, | |
850 | {"Oge", "\">=\"", BINOP_GEQ}, | |
851 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
852 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
853 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
854 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
855 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
856 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
857 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
858 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
859 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
860 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
861 | {NULL, NULL} | |
14f9c5c9 AS |
862 | }; |
863 | ||
965bc1df TT |
864 | /* If STR is a decoded version of a compiler-provided suffix (like the |
865 | "[cold]" in "symbol[cold]"), return true. Otherwise, return | |
866 | false. */ | |
867 | ||
868 | static bool | |
869 | is_compiler_suffix (const char *str) | |
870 | { | |
871 | gdb_assert (*str == '['); | |
872 | ++str; | |
873 | while (*str != '\0' && isalpha (*str)) | |
874 | ++str; | |
875 | /* We accept a missing "]" in order to support completion. */ | |
876 | return *str == '\0' || (str[0] == ']' && str[1] == '\0'); | |
877 | } | |
878 | ||
315e4ebb TT |
879 | /* Append a non-ASCII character to RESULT. */ |
880 | static void | |
881 | append_hex_encoded (std::string &result, uint32_t one_char) | |
882 | { | |
883 | if (one_char <= 0xff) | |
884 | { | |
885 | result.append ("U"); | |
886 | result.append (phex (one_char, 1)); | |
887 | } | |
888 | else if (one_char <= 0xffff) | |
889 | { | |
890 | result.append ("W"); | |
891 | result.append (phex (one_char, 2)); | |
892 | } | |
893 | else | |
894 | { | |
895 | result.append ("WW"); | |
896 | result.append (phex (one_char, 4)); | |
897 | } | |
898 | } | |
899 | ||
900 | /* Return a string that is a copy of the data in STORAGE, with | |
901 | non-ASCII characters replaced by the appropriate hex encoding. A | |
902 | template is used because, for UTF-8, we actually want to work with | |
903 | UTF-32 codepoints. */ | |
904 | template<typename T> | |
905 | std::string | |
906 | copy_and_hex_encode (struct obstack *storage) | |
907 | { | |
908 | const T *chars = (T *) obstack_base (storage); | |
909 | int num_chars = obstack_object_size (storage) / sizeof (T); | |
910 | std::string result; | |
911 | for (int i = 0; i < num_chars; ++i) | |
912 | { | |
913 | if (chars[i] <= 0x7f) | |
914 | { | |
915 | /* The host character set has to be a superset of ASCII, as | |
916 | are all the other character sets we can use. */ | |
917 | result.push_back (chars[i]); | |
918 | } | |
919 | else | |
920 | append_hex_encoded (result, chars[i]); | |
921 | } | |
922 | return result; | |
923 | } | |
924 | ||
5c4258f4 | 925 | /* The "encoded" form of DECODED, according to GNAT conventions. If |
b5ec771e | 926 | THROW_ERRORS, throw an error if invalid operator name is found. |
5c4258f4 | 927 | Otherwise, return the empty string in that case. */ |
4c4b4cd2 | 928 | |
5c4258f4 | 929 | static std::string |
b5ec771e | 930 | ada_encode_1 (const char *decoded, bool throw_errors) |
14f9c5c9 | 931 | { |
4c4b4cd2 | 932 | if (decoded == NULL) |
5c4258f4 | 933 | return {}; |
14f9c5c9 | 934 | |
5c4258f4 | 935 | std::string encoding_buffer; |
315e4ebb | 936 | bool saw_non_ascii = false; |
5c4258f4 | 937 | for (const char *p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 938 | { |
315e4ebb TT |
939 | if ((*p & 0x80) != 0) |
940 | saw_non_ascii = true; | |
941 | ||
cdc7bb92 | 942 | if (*p == '.') |
5c4258f4 | 943 | encoding_buffer.append ("__"); |
965bc1df TT |
944 | else if (*p == '[' && is_compiler_suffix (p)) |
945 | { | |
946 | encoding_buffer = encoding_buffer + "." + (p + 1); | |
947 | if (encoding_buffer.back () == ']') | |
948 | encoding_buffer.pop_back (); | |
949 | break; | |
950 | } | |
14f9c5c9 | 951 | else if (*p == '"') |
dda83cd7 SM |
952 | { |
953 | const struct ada_opname_map *mapping; | |
954 | ||
955 | for (mapping = ada_opname_table; | |
956 | mapping->encoded != NULL | |
957 | && !startswith (p, mapping->decoded); mapping += 1) | |
958 | ; | |
959 | if (mapping->encoded == NULL) | |
b5ec771e PA |
960 | { |
961 | if (throw_errors) | |
962 | error (_("invalid Ada operator name: %s"), p); | |
963 | else | |
5c4258f4 | 964 | return {}; |
b5ec771e | 965 | } |
5c4258f4 | 966 | encoding_buffer.append (mapping->encoded); |
dda83cd7 SM |
967 | break; |
968 | } | |
d2e4a39e | 969 | else |
5c4258f4 | 970 | encoding_buffer.push_back (*p); |
14f9c5c9 AS |
971 | } |
972 | ||
315e4ebb TT |
973 | /* If a non-ASCII character is seen, we must convert it to the |
974 | appropriate hex form. As this is more expensive, we keep track | |
975 | of whether it is even necessary. */ | |
976 | if (saw_non_ascii) | |
977 | { | |
978 | auto_obstack storage; | |
979 | bool is_utf8 = ada_source_charset == ada_utf8; | |
980 | try | |
981 | { | |
982 | convert_between_encodings | |
983 | (host_charset (), | |
984 | is_utf8 ? HOST_UTF32 : ada_source_charset, | |
985 | (const gdb_byte *) encoding_buffer.c_str (), | |
986 | encoding_buffer.length (), 1, | |
987 | &storage, translit_none); | |
988 | } | |
989 | catch (const gdb_exception &) | |
990 | { | |
991 | static bool warned = false; | |
992 | ||
993 | /* Converting to UTF-32 shouldn't fail, so if it doesn't, we | |
994 | might like to know why. */ | |
995 | if (!warned) | |
996 | { | |
997 | warned = true; | |
998 | warning (_("charset conversion failure for '%s'.\n" | |
999 | "You may have the wrong value for 'set ada source-charset'."), | |
1000 | encoding_buffer.c_str ()); | |
1001 | } | |
1002 | ||
1003 | /* We don't try to recover from errors. */ | |
1004 | return encoding_buffer; | |
1005 | } | |
1006 | ||
1007 | if (is_utf8) | |
1008 | return copy_and_hex_encode<uint32_t> (&storage); | |
1009 | return copy_and_hex_encode<gdb_byte> (&storage); | |
1010 | } | |
1011 | ||
4c4b4cd2 | 1012 | return encoding_buffer; |
14f9c5c9 AS |
1013 | } |
1014 | ||
315e4ebb TT |
1015 | /* Find the entry for C in the case-folding table. Return nullptr if |
1016 | the entry does not cover C. */ | |
1017 | static const utf8_entry * | |
1018 | find_case_fold_entry (uint32_t c) | |
b5ec771e | 1019 | { |
315e4ebb TT |
1020 | auto iter = std::lower_bound (std::begin (ada_case_fold), |
1021 | std::end (ada_case_fold), | |
1022 | c); | |
1023 | if (iter == std::end (ada_case_fold) | |
1024 | || c < iter->start | |
1025 | || c > iter->end) | |
1026 | return nullptr; | |
1027 | return &*iter; | |
b5ec771e PA |
1028 | } |
1029 | ||
14f9c5c9 | 1030 | /* Return NAME folded to lower case, or, if surrounded by single |
315e4ebb TT |
1031 | quotes, unfolded, but with the quotes stripped away. If |
1032 | THROW_ON_ERROR is true, encoding failures will throw an exception | |
1033 | rather than emitting a warning. Result good to next call. */ | |
4c4b4cd2 | 1034 | |
5f9febe0 | 1035 | static const char * |
315e4ebb | 1036 | ada_fold_name (gdb::string_view name, bool throw_on_error = false) |
14f9c5c9 | 1037 | { |
5f9febe0 | 1038 | static std::string fold_storage; |
14f9c5c9 | 1039 | |
6a780b67 | 1040 | if (!name.empty () && name[0] == '\'') |
01573d73 | 1041 | fold_storage = gdb::to_string (name.substr (1, name.size () - 2)); |
14f9c5c9 AS |
1042 | else |
1043 | { | |
315e4ebb TT |
1044 | /* Why convert to UTF-32 and implement our own case-folding, |
1045 | rather than convert to wchar_t and use the platform's | |
1046 | functions? I'm glad you asked. | |
1047 | ||
1048 | The main problem is that GNAT implements an unusual rule for | |
1049 | case folding. For ASCII letters, letters in single-byte | |
1050 | encodings (such as ISO-8859-*), and Unicode letters that fit | |
1051 | in a single byte (i.e., code point is <= 0xff), the letter is | |
1052 | folded to lower case. Other Unicode letters are folded to | |
1053 | upper case. | |
1054 | ||
1055 | This rule means that the code must be able to examine the | |
1056 | value of the character. And, some hosts do not use Unicode | |
1057 | for wchar_t, so examining the value of such characters is | |
1058 | forbidden. */ | |
1059 | auto_obstack storage; | |
1060 | try | |
1061 | { | |
1062 | convert_between_encodings | |
1063 | (host_charset (), HOST_UTF32, | |
1064 | (const gdb_byte *) name.data (), | |
1065 | name.length (), 1, | |
1066 | &storage, translit_none); | |
1067 | } | |
1068 | catch (const gdb_exception &) | |
1069 | { | |
1070 | if (throw_on_error) | |
1071 | throw; | |
1072 | ||
1073 | static bool warned = false; | |
1074 | ||
1075 | /* Converting to UTF-32 shouldn't fail, so if it doesn't, we | |
1076 | might like to know why. */ | |
1077 | if (!warned) | |
1078 | { | |
1079 | warned = true; | |
1080 | warning (_("could not convert '%s' from the host encoding (%s) to UTF-32.\n" | |
1081 | "This normally should not happen, please file a bug report."), | |
1082 | gdb::to_string (name).c_str (), host_charset ()); | |
1083 | } | |
1084 | ||
1085 | /* We don't try to recover from errors; just return the | |
1086 | original string. */ | |
1087 | fold_storage = gdb::to_string (name); | |
1088 | return fold_storage.c_str (); | |
1089 | } | |
1090 | ||
1091 | bool is_utf8 = ada_source_charset == ada_utf8; | |
1092 | uint32_t *chars = (uint32_t *) obstack_base (&storage); | |
1093 | int num_chars = obstack_object_size (&storage) / sizeof (uint32_t); | |
1094 | for (int i = 0; i < num_chars; ++i) | |
1095 | { | |
1096 | const struct utf8_entry *entry = find_case_fold_entry (chars[i]); | |
1097 | if (entry != nullptr) | |
1098 | { | |
1099 | uint32_t low = chars[i] + entry->lower_delta; | |
1100 | if (!is_utf8 || low <= 0xff) | |
1101 | chars[i] = low; | |
1102 | else | |
1103 | chars[i] = chars[i] + entry->upper_delta; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | /* Now convert back to ordinary characters. */ | |
1108 | auto_obstack reconverted; | |
1109 | try | |
1110 | { | |
1111 | convert_between_encodings (HOST_UTF32, | |
1112 | host_charset (), | |
1113 | (const gdb_byte *) chars, | |
1114 | num_chars * sizeof (uint32_t), | |
1115 | sizeof (uint32_t), | |
1116 | &reconverted, | |
1117 | translit_none); | |
1118 | obstack_1grow (&reconverted, '\0'); | |
1119 | fold_storage = std::string ((const char *) obstack_base (&reconverted)); | |
1120 | } | |
1121 | catch (const gdb_exception &) | |
1122 | { | |
1123 | if (throw_on_error) | |
1124 | throw; | |
1125 | ||
1126 | static bool warned = false; | |
1127 | ||
1128 | /* Converting back from UTF-32 shouldn't normally fail, but | |
1129 | there are some host encodings without upper/lower | |
1130 | equivalence. */ | |
1131 | if (!warned) | |
1132 | { | |
1133 | warned = true; | |
1134 | warning (_("could not convert the lower-cased variant of '%s'\n" | |
1135 | "from UTF-32 to the host encoding (%s)."), | |
1136 | gdb::to_string (name).c_str (), host_charset ()); | |
1137 | } | |
1138 | ||
1139 | /* We don't try to recover from errors; just return the | |
1140 | original string. */ | |
1141 | fold_storage = gdb::to_string (name); | |
1142 | } | |
14f9c5c9 AS |
1143 | } |
1144 | ||
5f9febe0 | 1145 | return fold_storage.c_str (); |
14f9c5c9 AS |
1146 | } |
1147 | ||
315e4ebb TT |
1148 | /* The "encoded" form of DECODED, according to GNAT conventions. */ |
1149 | ||
1150 | std::string | |
1151 | ada_encode (const char *decoded) | |
1152 | { | |
1153 | if (decoded[0] != '<') | |
1154 | decoded = ada_fold_name (decoded); | |
1155 | return ada_encode_1 (decoded, true); | |
1156 | } | |
1157 | ||
529cad9c PH |
1158 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
1159 | ||
1160 | static int | |
1161 | is_lower_alphanum (const char c) | |
1162 | { | |
1163 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
1164 | } | |
1165 | ||
c90092fe JB |
1166 | /* ENCODED is the linkage name of a symbol and LEN contains its length. |
1167 | This function saves in LEN the length of that same symbol name but | |
1168 | without either of these suffixes: | |
29480c32 JB |
1169 | . .{DIGIT}+ |
1170 | . ${DIGIT}+ | |
1171 | . ___{DIGIT}+ | |
1172 | . __{DIGIT}+. | |
c90092fe | 1173 | |
29480c32 JB |
1174 | These are suffixes introduced by the compiler for entities such as |
1175 | nested subprogram for instance, in order to avoid name clashes. | |
1176 | They do not serve any purpose for the debugger. */ | |
1177 | ||
1178 | static void | |
1179 | ada_remove_trailing_digits (const char *encoded, int *len) | |
1180 | { | |
1181 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
1182 | { | |
1183 | int i = *len - 2; | |
5b4ee69b | 1184 | |
29480c32 | 1185 | while (i > 0 && isdigit (encoded[i])) |
dda83cd7 | 1186 | i--; |
29480c32 | 1187 | if (i >= 0 && encoded[i] == '.') |
dda83cd7 | 1188 | *len = i; |
29480c32 | 1189 | else if (i >= 0 && encoded[i] == '$') |
dda83cd7 | 1190 | *len = i; |
61012eef | 1191 | else if (i >= 2 && startswith (encoded + i - 2, "___")) |
dda83cd7 | 1192 | *len = i - 2; |
61012eef | 1193 | else if (i >= 1 && startswith (encoded + i - 1, "__")) |
dda83cd7 | 1194 | *len = i - 1; |
29480c32 JB |
1195 | } |
1196 | } | |
1197 | ||
1198 | /* Remove the suffix introduced by the compiler for protected object | |
1199 | subprograms. */ | |
1200 | ||
1201 | static void | |
1202 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
1203 | { | |
1204 | /* Remove trailing N. */ | |
1205 | ||
1206 | /* Protected entry subprograms are broken into two | |
1207 | separate subprograms: The first one is unprotected, and has | |
1208 | a 'N' suffix; the second is the protected version, and has | |
0963b4bd | 1209 | the 'P' suffix. The second calls the first one after handling |
29480c32 JB |
1210 | the protection. Since the P subprograms are internally generated, |
1211 | we leave these names undecoded, giving the user a clue that this | |
1212 | entity is internal. */ | |
1213 | ||
1214 | if (*len > 1 | |
1215 | && encoded[*len - 1] == 'N' | |
1216 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
1217 | *len = *len - 1; | |
1218 | } | |
1219 | ||
965bc1df TT |
1220 | /* If ENCODED ends with a compiler-provided suffix (like ".cold"), |
1221 | then update *LEN to remove the suffix and return the offset of the | |
1222 | character just past the ".". Otherwise, return -1. */ | |
1223 | ||
1224 | static int | |
1225 | remove_compiler_suffix (const char *encoded, int *len) | |
1226 | { | |
1227 | int offset = *len - 1; | |
1228 | while (offset > 0 && isalpha (encoded[offset])) | |
1229 | --offset; | |
1230 | if (offset > 0 && encoded[offset] == '.') | |
1231 | { | |
1232 | *len = offset; | |
1233 | return offset + 1; | |
1234 | } | |
1235 | return -1; | |
1236 | } | |
1237 | ||
315e4ebb TT |
1238 | /* Convert an ASCII hex string to a number. Reads exactly N |
1239 | characters from STR. Returns true on success, false if one of the | |
1240 | digits was not a hex digit. */ | |
1241 | static bool | |
1242 | convert_hex (const char *str, int n, uint32_t *out) | |
1243 | { | |
1244 | uint32_t result = 0; | |
1245 | ||
1246 | for (int i = 0; i < n; ++i) | |
1247 | { | |
1248 | if (!isxdigit (str[i])) | |
1249 | return false; | |
1250 | result <<= 4; | |
1251 | result |= fromhex (str[i]); | |
1252 | } | |
1253 | ||
1254 | *out = result; | |
1255 | return true; | |
1256 | } | |
1257 | ||
1258 | /* Convert a wide character from its ASCII hex representation in STR | |
1259 | (consisting of exactly N characters) to the host encoding, | |
1260 | appending the resulting bytes to OUT. If N==2 and the Ada source | |
1261 | charset is not UTF-8, then hex refers to an encoding in the | |
1262 | ADA_SOURCE_CHARSET; otherwise, use UTF-32. Return true on success. | |
1263 | Return false and do not modify OUT on conversion failure. */ | |
1264 | static bool | |
1265 | convert_from_hex_encoded (std::string &out, const char *str, int n) | |
1266 | { | |
1267 | uint32_t value; | |
1268 | ||
1269 | if (!convert_hex (str, n, &value)) | |
1270 | return false; | |
1271 | try | |
1272 | { | |
1273 | auto_obstack bytes; | |
1274 | /* In the 'U' case, the hex digits encode the character in the | |
1275 | Ada source charset. However, if the source charset is UTF-8, | |
1276 | this really means it is a single-byte UTF-32 character. */ | |
1277 | if (n == 2 && ada_source_charset != ada_utf8) | |
1278 | { | |
1279 | gdb_byte one_char = (gdb_byte) value; | |
1280 | ||
1281 | convert_between_encodings (ada_source_charset, host_charset (), | |
1282 | &one_char, | |
1283 | sizeof (one_char), sizeof (one_char), | |
1284 | &bytes, translit_none); | |
1285 | } | |
1286 | else | |
1287 | convert_between_encodings (HOST_UTF32, host_charset (), | |
1288 | (const gdb_byte *) &value, | |
1289 | sizeof (value), sizeof (value), | |
1290 | &bytes, translit_none); | |
1291 | obstack_1grow (&bytes, '\0'); | |
1292 | out.append ((const char *) obstack_base (&bytes)); | |
1293 | } | |
1294 | catch (const gdb_exception &) | |
1295 | { | |
1296 | /* On failure, the caller will just let the encoded form | |
1297 | through, which seems basically reasonable. */ | |
1298 | return false; | |
1299 | } | |
1300 | ||
1301 | return true; | |
1302 | } | |
1303 | ||
8a3df5ac | 1304 | /* See ada-lang.h. */ |
14f9c5c9 | 1305 | |
f945dedf | 1306 | std::string |
8a3df5ac | 1307 | ada_decode (const char *encoded, bool wrap) |
14f9c5c9 | 1308 | { |
36f5ca53 | 1309 | int i; |
14f9c5c9 | 1310 | int len0; |
d2e4a39e | 1311 | const char *p; |
14f9c5c9 | 1312 | int at_start_name; |
f945dedf | 1313 | std::string decoded; |
965bc1df | 1314 | int suffix = -1; |
d2e4a39e | 1315 | |
0d81f350 JG |
1316 | /* With function descriptors on PPC64, the value of a symbol named |
1317 | ".FN", if it exists, is the entry point of the function "FN". */ | |
1318 | if (encoded[0] == '.') | |
1319 | encoded += 1; | |
1320 | ||
29480c32 JB |
1321 | /* The name of the Ada main procedure starts with "_ada_". |
1322 | This prefix is not part of the decoded name, so skip this part | |
1323 | if we see this prefix. */ | |
61012eef | 1324 | if (startswith (encoded, "_ada_")) |
4c4b4cd2 | 1325 | encoded += 5; |
14f9c5c9 | 1326 | |
29480c32 JB |
1327 | /* If the name starts with '_', then it is not a properly encoded |
1328 | name, so do not attempt to decode it. Similarly, if the name | |
1329 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 1330 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
1331 | goto Suppress; |
1332 | ||
4c4b4cd2 | 1333 | len0 = strlen (encoded); |
4c4b4cd2 | 1334 | |
965bc1df TT |
1335 | suffix = remove_compiler_suffix (encoded, &len0); |
1336 | ||
29480c32 JB |
1337 | ada_remove_trailing_digits (encoded, &len0); |
1338 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 1339 | |
4c4b4cd2 PH |
1340 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
1341 | the suffix is located before the current "end" of ENCODED. We want | |
1342 | to avoid re-matching parts of ENCODED that have previously been | |
1343 | marked as discarded (by decrementing LEN0). */ | |
1344 | p = strstr (encoded, "___"); | |
1345 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
1346 | { |
1347 | if (p[3] == 'X') | |
dda83cd7 | 1348 | len0 = p - encoded; |
14f9c5c9 | 1349 | else |
dda83cd7 | 1350 | goto Suppress; |
14f9c5c9 | 1351 | } |
4c4b4cd2 | 1352 | |
29480c32 JB |
1353 | /* Remove any trailing TKB suffix. It tells us that this symbol |
1354 | is for the body of a task, but that information does not actually | |
1355 | appear in the decoded name. */ | |
1356 | ||
61012eef | 1357 | if (len0 > 3 && startswith (encoded + len0 - 3, "TKB")) |
14f9c5c9 | 1358 | len0 -= 3; |
76a01679 | 1359 | |
a10967fa JB |
1360 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
1361 | from the TKB suffix because it is used for non-anonymous task | |
1362 | bodies. */ | |
1363 | ||
61012eef | 1364 | if (len0 > 2 && startswith (encoded + len0 - 2, "TB")) |
a10967fa JB |
1365 | len0 -= 2; |
1366 | ||
29480c32 JB |
1367 | /* Remove trailing "B" suffixes. */ |
1368 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
1369 | ||
61012eef | 1370 | if (len0 > 1 && startswith (encoded + len0 - 1, "B")) |
14f9c5c9 AS |
1371 | len0 -= 1; |
1372 | ||
29480c32 JB |
1373 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
1374 | ||
4c4b4cd2 | 1375 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1376 | { |
4c4b4cd2 PH |
1377 | i = len0 - 2; |
1378 | while ((i >= 0 && isdigit (encoded[i])) | |
dda83cd7 SM |
1379 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) |
1380 | i -= 1; | |
4c4b4cd2 | 1381 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') |
dda83cd7 | 1382 | len0 = i - 1; |
4c4b4cd2 | 1383 | else if (encoded[i] == '$') |
dda83cd7 | 1384 | len0 = i; |
d2e4a39e | 1385 | } |
14f9c5c9 | 1386 | |
29480c32 JB |
1387 | /* The first few characters that are not alphabetic are not part |
1388 | of any encoding we use, so we can copy them over verbatim. */ | |
1389 | ||
36f5ca53 TT |
1390 | for (i = 0; i < len0 && !isalpha (encoded[i]); i += 1) |
1391 | decoded.push_back (encoded[i]); | |
14f9c5c9 AS |
1392 | |
1393 | at_start_name = 1; | |
1394 | while (i < len0) | |
1395 | { | |
29480c32 | 1396 | /* Is this a symbol function? */ |
4c4b4cd2 | 1397 | if (at_start_name && encoded[i] == 'O') |
dda83cd7 SM |
1398 | { |
1399 | int k; | |
1400 | ||
1401 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
1402 | { | |
1403 | int op_len = strlen (ada_opname_table[k].encoded); | |
1404 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, | |
1405 | op_len - 1) == 0) | |
1406 | && !isalnum (encoded[i + op_len])) | |
1407 | { | |
36f5ca53 | 1408 | decoded.append (ada_opname_table[k].decoded); |
dda83cd7 SM |
1409 | at_start_name = 0; |
1410 | i += op_len; | |
dda83cd7 SM |
1411 | break; |
1412 | } | |
1413 | } | |
1414 | if (ada_opname_table[k].encoded != NULL) | |
1415 | continue; | |
1416 | } | |
14f9c5c9 AS |
1417 | at_start_name = 0; |
1418 | ||
529cad9c | 1419 | /* Replace "TK__" with "__", which will eventually be translated |
dda83cd7 | 1420 | into "." (just below). */ |
529cad9c | 1421 | |
61012eef | 1422 | if (i < len0 - 4 && startswith (encoded + i, "TK__")) |
dda83cd7 | 1423 | i += 2; |
529cad9c | 1424 | |
29480c32 | 1425 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
dda83cd7 SM |
1426 | be translated into "." (just below). These are internal names |
1427 | generated for anonymous blocks inside which our symbol is nested. */ | |
29480c32 JB |
1428 | |
1429 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
dda83cd7 SM |
1430 | && encoded [i+2] == 'B' && encoded [i+3] == '_' |
1431 | && isdigit (encoded [i+4])) | |
1432 | { | |
1433 | int k = i + 5; | |
1434 | ||
1435 | while (k < len0 && isdigit (encoded[k])) | |
1436 | k++; /* Skip any extra digit. */ | |
1437 | ||
1438 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1439 | is indeed followed by "__". */ | |
1440 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1441 | i = k; | |
1442 | } | |
29480c32 | 1443 | |
529cad9c PH |
1444 | /* Remove _E{DIGITS}+[sb] */ |
1445 | ||
1446 | /* Just as for protected object subprograms, there are 2 categories | |
dda83cd7 SM |
1447 | of subprograms created by the compiler for each entry. The first |
1448 | one implements the actual entry code, and has a suffix following | |
1449 | the convention above; the second one implements the barrier and | |
1450 | uses the same convention as above, except that the 'E' is replaced | |
1451 | by a 'B'. | |
529cad9c | 1452 | |
dda83cd7 SM |
1453 | Just as above, we do not decode the name of barrier functions |
1454 | to give the user a clue that the code he is debugging has been | |
1455 | internally generated. */ | |
529cad9c PH |
1456 | |
1457 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
dda83cd7 SM |
1458 | && isdigit (encoded[i+2])) |
1459 | { | |
1460 | int k = i + 3; | |
1461 | ||
1462 | while (k < len0 && isdigit (encoded[k])) | |
1463 | k++; | |
1464 | ||
1465 | if (k < len0 | |
1466 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1467 | { | |
1468 | k++; | |
1469 | /* Just as an extra precaution, make sure that if this | |
1470 | suffix is followed by anything else, it is a '_'. | |
1471 | Otherwise, we matched this sequence by accident. */ | |
1472 | if (k == len0 | |
1473 | || (k < len0 && encoded[k] == '_')) | |
1474 | i = k; | |
1475 | } | |
1476 | } | |
529cad9c PH |
1477 | |
1478 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
dda83cd7 | 1479 | the GNAT front-end in protected object subprograms. */ |
529cad9c PH |
1480 | |
1481 | if (i < len0 + 3 | |
dda83cd7 SM |
1482 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') |
1483 | { | |
1484 | /* Backtrack a bit up until we reach either the begining of | |
1485 | the encoded name, or "__". Make sure that we only find | |
1486 | digits or lowercase characters. */ | |
1487 | const char *ptr = encoded + i - 1; | |
1488 | ||
1489 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1490 | ptr--; | |
1491 | if (ptr < encoded | |
1492 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1493 | i++; | |
1494 | } | |
529cad9c | 1495 | |
315e4ebb TT |
1496 | if (i < len0 + 3 && encoded[i] == 'U' && isxdigit (encoded[i + 1])) |
1497 | { | |
1498 | if (convert_from_hex_encoded (decoded, &encoded[i + 1], 2)) | |
1499 | { | |
1500 | i += 3; | |
1501 | continue; | |
1502 | } | |
1503 | } | |
1504 | else if (i < len0 + 5 && encoded[i] == 'W' && isxdigit (encoded[i + 1])) | |
1505 | { | |
1506 | if (convert_from_hex_encoded (decoded, &encoded[i + 1], 4)) | |
1507 | { | |
1508 | i += 5; | |
1509 | continue; | |
1510 | } | |
1511 | } | |
1512 | else if (i < len0 + 10 && encoded[i] == 'W' && encoded[i + 1] == 'W' | |
1513 | && isxdigit (encoded[i + 2])) | |
1514 | { | |
1515 | if (convert_from_hex_encoded (decoded, &encoded[i + 2], 8)) | |
1516 | { | |
1517 | i += 10; | |
1518 | continue; | |
1519 | } | |
1520 | } | |
1521 | ||
4c4b4cd2 | 1522 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
dda83cd7 SM |
1523 | { |
1524 | /* This is a X[bn]* sequence not separated from the previous | |
1525 | part of the name with a non-alpha-numeric character (in other | |
1526 | words, immediately following an alpha-numeric character), then | |
1527 | verify that it is placed at the end of the encoded name. If | |
1528 | not, then the encoding is not valid and we should abort the | |
1529 | decoding. Otherwise, just skip it, it is used in body-nested | |
1530 | package names. */ | |
1531 | do | |
1532 | i += 1; | |
1533 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1534 | if (i < len0) | |
1535 | goto Suppress; | |
1536 | } | |
cdc7bb92 | 1537 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
dda83cd7 SM |
1538 | { |
1539 | /* Replace '__' by '.'. */ | |
36f5ca53 | 1540 | decoded.push_back ('.'); |
dda83cd7 SM |
1541 | at_start_name = 1; |
1542 | i += 2; | |
dda83cd7 | 1543 | } |
14f9c5c9 | 1544 | else |
dda83cd7 SM |
1545 | { |
1546 | /* It's a character part of the decoded name, so just copy it | |
1547 | over. */ | |
36f5ca53 | 1548 | decoded.push_back (encoded[i]); |
dda83cd7 | 1549 | i += 1; |
dda83cd7 | 1550 | } |
14f9c5c9 | 1551 | } |
14f9c5c9 | 1552 | |
29480c32 JB |
1553 | /* Decoded names should never contain any uppercase character. |
1554 | Double-check this, and abort the decoding if we find one. */ | |
1555 | ||
f945dedf | 1556 | for (i = 0; i < decoded.length(); ++i) |
4c4b4cd2 | 1557 | if (isupper (decoded[i]) || decoded[i] == ' ') |
14f9c5c9 AS |
1558 | goto Suppress; |
1559 | ||
965bc1df TT |
1560 | /* If the compiler added a suffix, append it now. */ |
1561 | if (suffix >= 0) | |
1562 | decoded = decoded + "[" + &encoded[suffix] + "]"; | |
1563 | ||
f945dedf | 1564 | return decoded; |
14f9c5c9 AS |
1565 | |
1566 | Suppress: | |
8a3df5ac TT |
1567 | if (!wrap) |
1568 | return {}; | |
1569 | ||
4c4b4cd2 | 1570 | if (encoded[0] == '<') |
f945dedf | 1571 | decoded = encoded; |
14f9c5c9 | 1572 | else |
f945dedf | 1573 | decoded = '<' + std::string(encoded) + '>'; |
4c4b4cd2 | 1574 | return decoded; |
4c4b4cd2 PH |
1575 | } |
1576 | ||
1577 | /* Table for keeping permanent unique copies of decoded names. Once | |
1578 | allocated, names in this table are never released. While this is a | |
1579 | storage leak, it should not be significant unless there are massive | |
1580 | changes in the set of decoded names in successive versions of a | |
1581 | symbol table loaded during a single session. */ | |
1582 | static struct htab *decoded_names_store; | |
1583 | ||
1584 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1585 | in the language-specific part of GSYMBOL, if it has not been | |
1586 | previously computed. Tries to save the decoded name in the same | |
1587 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1588 | in any case, the decoded symbol has a lifetime at least that of | |
0963b4bd | 1589 | GSYMBOL). |
4c4b4cd2 PH |
1590 | The GSYMBOL parameter is "mutable" in the C++ sense: logically |
1591 | const, but nevertheless modified to a semantically equivalent form | |
0963b4bd | 1592 | when a decoded name is cached in it. */ |
4c4b4cd2 | 1593 | |
45e6c716 | 1594 | const char * |
f85f34ed | 1595 | ada_decode_symbol (const struct general_symbol_info *arg) |
4c4b4cd2 | 1596 | { |
f85f34ed TT |
1597 | struct general_symbol_info *gsymbol = (struct general_symbol_info *) arg; |
1598 | const char **resultp = | |
615b3f62 | 1599 | &gsymbol->language_specific.demangled_name; |
5b4ee69b | 1600 | |
f85f34ed | 1601 | if (!gsymbol->ada_mangled) |
4c4b4cd2 | 1602 | { |
4d4eaa30 | 1603 | std::string decoded = ada_decode (gsymbol->linkage_name ()); |
f85f34ed | 1604 | struct obstack *obstack = gsymbol->language_specific.obstack; |
5b4ee69b | 1605 | |
f85f34ed | 1606 | gsymbol->ada_mangled = 1; |
5b4ee69b | 1607 | |
f85f34ed | 1608 | if (obstack != NULL) |
f945dedf | 1609 | *resultp = obstack_strdup (obstack, decoded.c_str ()); |
f85f34ed | 1610 | else |
dda83cd7 | 1611 | { |
f85f34ed TT |
1612 | /* Sometimes, we can't find a corresponding objfile, in |
1613 | which case, we put the result on the heap. Since we only | |
1614 | decode when needed, we hope this usually does not cause a | |
1615 | significant memory leak (FIXME). */ | |
1616 | ||
dda83cd7 SM |
1617 | char **slot = (char **) htab_find_slot (decoded_names_store, |
1618 | decoded.c_str (), INSERT); | |
5b4ee69b | 1619 | |
dda83cd7 SM |
1620 | if (*slot == NULL) |
1621 | *slot = xstrdup (decoded.c_str ()); | |
1622 | *resultp = *slot; | |
1623 | } | |
4c4b4cd2 | 1624 | } |
14f9c5c9 | 1625 | |
4c4b4cd2 PH |
1626 | return *resultp; |
1627 | } | |
76a01679 | 1628 | |
14f9c5c9 | 1629 | \f |
d2e4a39e | 1630 | |
dda83cd7 | 1631 | /* Arrays */ |
14f9c5c9 | 1632 | |
28c85d6c JB |
1633 | /* Assuming that INDEX_DESC_TYPE is an ___XA structure, a structure |
1634 | generated by the GNAT compiler to describe the index type used | |
1635 | for each dimension of an array, check whether it follows the latest | |
1636 | known encoding. If not, fix it up to conform to the latest encoding. | |
1637 | Otherwise, do nothing. This function also does nothing if | |
1638 | INDEX_DESC_TYPE is NULL. | |
1639 | ||
85102364 | 1640 | The GNAT encoding used to describe the array index type evolved a bit. |
28c85d6c JB |
1641 | Initially, the information would be provided through the name of each |
1642 | field of the structure type only, while the type of these fields was | |
1643 | described as unspecified and irrelevant. The debugger was then expected | |
1644 | to perform a global type lookup using the name of that field in order | |
1645 | to get access to the full index type description. Because these global | |
1646 | lookups can be very expensive, the encoding was later enhanced to make | |
1647 | the global lookup unnecessary by defining the field type as being | |
1648 | the full index type description. | |
1649 | ||
1650 | The purpose of this routine is to allow us to support older versions | |
1651 | of the compiler by detecting the use of the older encoding, and by | |
1652 | fixing up the INDEX_DESC_TYPE to follow the new one (at this point, | |
1653 | we essentially replace each field's meaningless type by the associated | |
1654 | index subtype). */ | |
1655 | ||
1656 | void | |
1657 | ada_fixup_array_indexes_type (struct type *index_desc_type) | |
1658 | { | |
1659 | int i; | |
1660 | ||
1661 | if (index_desc_type == NULL) | |
1662 | return; | |
1f704f76 | 1663 | gdb_assert (index_desc_type->num_fields () > 0); |
28c85d6c JB |
1664 | |
1665 | /* Check if INDEX_DESC_TYPE follows the older encoding (it is sufficient | |
1666 | to check one field only, no need to check them all). If not, return | |
1667 | now. | |
1668 | ||
1669 | If our INDEX_DESC_TYPE was generated using the older encoding, | |
1670 | the field type should be a meaningless integer type whose name | |
1671 | is not equal to the field name. */ | |
940da03e SM |
1672 | if (index_desc_type->field (0).type ()->name () != NULL |
1673 | && strcmp (index_desc_type->field (0).type ()->name (), | |
33d16dd9 | 1674 | index_desc_type->field (0).name ()) == 0) |
28c85d6c JB |
1675 | return; |
1676 | ||
1677 | /* Fixup each field of INDEX_DESC_TYPE. */ | |
1f704f76 | 1678 | for (i = 0; i < index_desc_type->num_fields (); i++) |
28c85d6c | 1679 | { |
33d16dd9 | 1680 | const char *name = index_desc_type->field (i).name (); |
28c85d6c JB |
1681 | struct type *raw_type = ada_check_typedef (ada_find_any_type (name)); |
1682 | ||
1683 | if (raw_type) | |
5d14b6e5 | 1684 | index_desc_type->field (i).set_type (raw_type); |
28c85d6c JB |
1685 | } |
1686 | } | |
1687 | ||
4c4b4cd2 PH |
1688 | /* The desc_* routines return primitive portions of array descriptors |
1689 | (fat pointers). */ | |
14f9c5c9 AS |
1690 | |
1691 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1692 | level of indirection, if needed. */ |
1693 | ||
d2e4a39e AS |
1694 | static struct type * |
1695 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1696 | { |
1697 | if (type == NULL) | |
1698 | return NULL; | |
61ee279c | 1699 | type = ada_check_typedef (type); |
78134374 | 1700 | if (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
1701 | type = ada_typedef_target_type (type); |
1702 | ||
1265e4aa | 1703 | if (type != NULL |
78134374 | 1704 | && (type->code () == TYPE_CODE_PTR |
dda83cd7 | 1705 | || type->code () == TYPE_CODE_REF)) |
61ee279c | 1706 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1707 | else |
1708 | return type; | |
1709 | } | |
1710 | ||
4c4b4cd2 PH |
1711 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1712 | ||
14f9c5c9 | 1713 | static int |
d2e4a39e | 1714 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1715 | { |
d2e4a39e | 1716 | return |
14f9c5c9 AS |
1717 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1718 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1719 | } | |
1720 | ||
4c4b4cd2 PH |
1721 | /* The descriptor type for thin pointer type TYPE. */ |
1722 | ||
d2e4a39e AS |
1723 | static struct type * |
1724 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1725 | { |
d2e4a39e | 1726 | struct type *base_type = desc_base_type (type); |
5b4ee69b | 1727 | |
14f9c5c9 AS |
1728 | if (base_type == NULL) |
1729 | return NULL; | |
1730 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1731 | return base_type; | |
d2e4a39e | 1732 | else |
14f9c5c9 | 1733 | { |
d2e4a39e | 1734 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
5b4ee69b | 1735 | |
14f9c5c9 | 1736 | if (alt_type == NULL) |
dda83cd7 | 1737 | return base_type; |
14f9c5c9 | 1738 | else |
dda83cd7 | 1739 | return alt_type; |
14f9c5c9 AS |
1740 | } |
1741 | } | |
1742 | ||
4c4b4cd2 PH |
1743 | /* A pointer to the array data for thin-pointer value VAL. */ |
1744 | ||
d2e4a39e AS |
1745 | static struct value * |
1746 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1747 | { |
828292f2 | 1748 | struct type *type = ada_check_typedef (value_type (val)); |
556bdfd4 | 1749 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
5b4ee69b | 1750 | |
556bdfd4 UW |
1751 | data_type = lookup_pointer_type (data_type); |
1752 | ||
78134374 | 1753 | if (type->code () == TYPE_CODE_PTR) |
556bdfd4 | 1754 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1755 | else |
42ae5230 | 1756 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1757 | } |
1758 | ||
4c4b4cd2 PH |
1759 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1760 | ||
14f9c5c9 | 1761 | static int |
d2e4a39e | 1762 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1763 | { |
1764 | type = desc_base_type (type); | |
78134374 | 1765 | return (type != NULL && type->code () == TYPE_CODE_STRUCT |
dda83cd7 | 1766 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1767 | } |
1768 | ||
4c4b4cd2 PH |
1769 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1770 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1771 | |
d2e4a39e AS |
1772 | static struct type * |
1773 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1774 | { |
d2e4a39e | 1775 | struct type *r; |
14f9c5c9 AS |
1776 | |
1777 | type = desc_base_type (type); | |
1778 | ||
1779 | if (type == NULL) | |
1780 | return NULL; | |
1781 | else if (is_thin_pntr (type)) | |
1782 | { | |
1783 | type = thin_descriptor_type (type); | |
1784 | if (type == NULL) | |
dda83cd7 | 1785 | return NULL; |
14f9c5c9 AS |
1786 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1787 | if (r != NULL) | |
dda83cd7 | 1788 | return ada_check_typedef (r); |
14f9c5c9 | 1789 | } |
78134374 | 1790 | else if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
1791 | { |
1792 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1793 | if (r != NULL) | |
dda83cd7 | 1794 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1795 | } |
1796 | return NULL; | |
1797 | } | |
1798 | ||
1799 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1800 | one, a pointer to its bounds data. Otherwise NULL. */ |
1801 | ||
d2e4a39e AS |
1802 | static struct value * |
1803 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1804 | { |
df407dfe | 1805 | struct type *type = ada_check_typedef (value_type (arr)); |
5b4ee69b | 1806 | |
d2e4a39e | 1807 | if (is_thin_pntr (type)) |
14f9c5c9 | 1808 | { |
d2e4a39e | 1809 | struct type *bounds_type = |
dda83cd7 | 1810 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1811 | LONGEST addr; |
1812 | ||
4cdfadb1 | 1813 | if (bounds_type == NULL) |
dda83cd7 | 1814 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1815 | |
1816 | /* NOTE: The following calculation is not really kosher, but | |
dda83cd7 SM |
1817 | since desc_type is an XVE-encoded type (and shouldn't be), |
1818 | the correct calculation is a real pain. FIXME (and fix GCC). */ | |
78134374 | 1819 | if (type->code () == TYPE_CODE_PTR) |
dda83cd7 | 1820 | addr = value_as_long (arr); |
d2e4a39e | 1821 | else |
dda83cd7 | 1822 | addr = value_address (arr); |
14f9c5c9 | 1823 | |
d2e4a39e | 1824 | return |
dda83cd7 SM |
1825 | value_from_longest (lookup_pointer_type (bounds_type), |
1826 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1827 | } |
1828 | ||
1829 | else if (is_thick_pntr (type)) | |
05e522ef | 1830 | { |
158cc4fe | 1831 | struct value *p_bounds = value_struct_elt (&arr, {}, "P_BOUNDS", NULL, |
05e522ef JB |
1832 | _("Bad GNAT array descriptor")); |
1833 | struct type *p_bounds_type = value_type (p_bounds); | |
1834 | ||
1835 | if (p_bounds_type | |
78134374 | 1836 | && p_bounds_type->code () == TYPE_CODE_PTR) |
05e522ef JB |
1837 | { |
1838 | struct type *target_type = TYPE_TARGET_TYPE (p_bounds_type); | |
1839 | ||
e46d3488 | 1840 | if (target_type->is_stub ()) |
05e522ef JB |
1841 | p_bounds = value_cast (lookup_pointer_type |
1842 | (ada_check_typedef (target_type)), | |
1843 | p_bounds); | |
1844 | } | |
1845 | else | |
1846 | error (_("Bad GNAT array descriptor")); | |
1847 | ||
1848 | return p_bounds; | |
1849 | } | |
14f9c5c9 AS |
1850 | else |
1851 | return NULL; | |
1852 | } | |
1853 | ||
4c4b4cd2 PH |
1854 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1855 | position of the field containing the address of the bounds data. */ | |
1856 | ||
14f9c5c9 | 1857 | static int |
d2e4a39e | 1858 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 | 1859 | { |
b610c045 | 1860 | return desc_base_type (type)->field (1).loc_bitpos (); |
14f9c5c9 AS |
1861 | } |
1862 | ||
1863 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1864 | size of the field containing the address of the bounds data. */ |
1865 | ||
14f9c5c9 | 1866 | static int |
d2e4a39e | 1867 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1868 | { |
1869 | type = desc_base_type (type); | |
1870 | ||
d2e4a39e | 1871 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1872 | return TYPE_FIELD_BITSIZE (type, 1); |
1873 | else | |
940da03e | 1874 | return 8 * TYPE_LENGTH (ada_check_typedef (type->field (1).type ())); |
14f9c5c9 AS |
1875 | } |
1876 | ||
4c4b4cd2 | 1877 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1878 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1879 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1880 | data. */ | |
4c4b4cd2 | 1881 | |
d2e4a39e | 1882 | static struct type * |
556bdfd4 | 1883 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1884 | { |
1885 | type = desc_base_type (type); | |
1886 | ||
4c4b4cd2 | 1887 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1888 | if (is_thin_pntr (type)) |
940da03e | 1889 | return desc_base_type (thin_descriptor_type (type)->field (1).type ()); |
14f9c5c9 | 1890 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1891 | { |
1892 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1893 | ||
1894 | if (data_type | |
78134374 | 1895 | && ada_check_typedef (data_type)->code () == TYPE_CODE_PTR) |
05e522ef | 1896 | return ada_check_typedef (TYPE_TARGET_TYPE (data_type)); |
556bdfd4 UW |
1897 | } |
1898 | ||
1899 | return NULL; | |
14f9c5c9 AS |
1900 | } |
1901 | ||
1902 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1903 | its array data. */ | |
4c4b4cd2 | 1904 | |
d2e4a39e AS |
1905 | static struct value * |
1906 | desc_data (struct value *arr) | |
14f9c5c9 | 1907 | { |
df407dfe | 1908 | struct type *type = value_type (arr); |
5b4ee69b | 1909 | |
14f9c5c9 AS |
1910 | if (is_thin_pntr (type)) |
1911 | return thin_data_pntr (arr); | |
1912 | else if (is_thick_pntr (type)) | |
158cc4fe | 1913 | return value_struct_elt (&arr, {}, "P_ARRAY", NULL, |
dda83cd7 | 1914 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1915 | else |
1916 | return NULL; | |
1917 | } | |
1918 | ||
1919 | ||
1920 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1921 | position of the field containing the address of the data. */ |
1922 | ||
14f9c5c9 | 1923 | static int |
d2e4a39e | 1924 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 | 1925 | { |
b610c045 | 1926 | return desc_base_type (type)->field (0).loc_bitpos (); |
14f9c5c9 AS |
1927 | } |
1928 | ||
1929 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1930 | size of the field containing the address of the data. */ |
1931 | ||
14f9c5c9 | 1932 | static int |
d2e4a39e | 1933 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1934 | { |
1935 | type = desc_base_type (type); | |
1936 | ||
1937 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1938 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1939 | else |
940da03e | 1940 | return TARGET_CHAR_BIT * TYPE_LENGTH (type->field (0).type ()); |
14f9c5c9 AS |
1941 | } |
1942 | ||
4c4b4cd2 | 1943 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1944 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1945 | bound, if WHICH is 1. The first bound is I=1. */ |
1946 | ||
d2e4a39e AS |
1947 | static struct value * |
1948 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1949 | { |
250106a7 TT |
1950 | char bound_name[20]; |
1951 | xsnprintf (bound_name, sizeof (bound_name), "%cB%d", | |
1952 | which ? 'U' : 'L', i - 1); | |
158cc4fe | 1953 | return value_struct_elt (&bounds, {}, bound_name, NULL, |
dda83cd7 | 1954 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1955 | } |
1956 | ||
1957 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1958 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1959 | bound, if WHICH is 1. The first bound is I=1. */ |
1960 | ||
14f9c5c9 | 1961 | static int |
d2e4a39e | 1962 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1963 | { |
b610c045 | 1964 | return desc_base_type (type)->field (2 * i + which - 2).loc_bitpos (); |
14f9c5c9 AS |
1965 | } |
1966 | ||
1967 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1968 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1969 | bound, if WHICH is 1. The first bound is I=1. */ |
1970 | ||
76a01679 | 1971 | static int |
d2e4a39e | 1972 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1973 | { |
1974 | type = desc_base_type (type); | |
1975 | ||
d2e4a39e AS |
1976 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1977 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1978 | else | |
940da03e | 1979 | return 8 * TYPE_LENGTH (type->field (2 * i + which - 2).type ()); |
14f9c5c9 AS |
1980 | } |
1981 | ||
1982 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1983 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1984 | ||
d2e4a39e AS |
1985 | static struct type * |
1986 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1987 | { |
1988 | type = desc_base_type (type); | |
1989 | ||
78134374 | 1990 | if (type->code () == TYPE_CODE_STRUCT) |
250106a7 TT |
1991 | { |
1992 | char bound_name[20]; | |
1993 | xsnprintf (bound_name, sizeof (bound_name), "LB%d", i - 1); | |
1994 | return lookup_struct_elt_type (type, bound_name, 1); | |
1995 | } | |
d2e4a39e | 1996 | else |
14f9c5c9 AS |
1997 | return NULL; |
1998 | } | |
1999 | ||
4c4b4cd2 PH |
2000 | /* The number of index positions in the array-bounds type TYPE. |
2001 | Return 0 if TYPE is NULL. */ | |
2002 | ||
14f9c5c9 | 2003 | static int |
d2e4a39e | 2004 | desc_arity (struct type *type) |
14f9c5c9 AS |
2005 | { |
2006 | type = desc_base_type (type); | |
2007 | ||
2008 | if (type != NULL) | |
1f704f76 | 2009 | return type->num_fields () / 2; |
14f9c5c9 AS |
2010 | return 0; |
2011 | } | |
2012 | ||
4c4b4cd2 PH |
2013 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
2014 | an array descriptor type (representing an unconstrained array | |
2015 | type). */ | |
2016 | ||
76a01679 JB |
2017 | static int |
2018 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
2019 | { |
2020 | if (type == NULL) | |
2021 | return 0; | |
61ee279c | 2022 | type = ada_check_typedef (type); |
78134374 | 2023 | return (type->code () == TYPE_CODE_ARRAY |
dda83cd7 | 2024 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
2025 | } |
2026 | ||
52ce6436 | 2027 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
0963b4bd | 2028 | * to one. */ |
52ce6436 | 2029 | |
2c0b251b | 2030 | static int |
52ce6436 PH |
2031 | ada_is_array_type (struct type *type) |
2032 | { | |
78134374 SM |
2033 | while (type != NULL |
2034 | && (type->code () == TYPE_CODE_PTR | |
2035 | || type->code () == TYPE_CODE_REF)) | |
52ce6436 PH |
2036 | type = TYPE_TARGET_TYPE (type); |
2037 | return ada_is_direct_array_type (type); | |
2038 | } | |
2039 | ||
4c4b4cd2 | 2040 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 2041 | |
14f9c5c9 | 2042 | int |
4c4b4cd2 | 2043 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
2044 | { |
2045 | if (type == NULL) | |
2046 | return 0; | |
61ee279c | 2047 | type = ada_check_typedef (type); |
78134374 SM |
2048 | return (type->code () == TYPE_CODE_ARRAY |
2049 | || (type->code () == TYPE_CODE_PTR | |
2050 | && (ada_check_typedef (TYPE_TARGET_TYPE (type))->code () | |
2051 | == TYPE_CODE_ARRAY))); | |
14f9c5c9 AS |
2052 | } |
2053 | ||
4c4b4cd2 PH |
2054 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
2055 | ||
14f9c5c9 | 2056 | int |
4c4b4cd2 | 2057 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 2058 | { |
556bdfd4 | 2059 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
2060 | |
2061 | if (type == NULL) | |
2062 | return 0; | |
61ee279c | 2063 | type = ada_check_typedef (type); |
556bdfd4 | 2064 | return (data_type != NULL |
78134374 | 2065 | && data_type->code () == TYPE_CODE_ARRAY |
556bdfd4 | 2066 | && desc_arity (desc_bounds_type (type)) > 0); |
14f9c5c9 AS |
2067 | } |
2068 | ||
2069 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 2070 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 2071 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
2072 | is still needed. */ |
2073 | ||
14f9c5c9 | 2074 | int |
ebf56fd3 | 2075 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 2076 | { |
d2e4a39e | 2077 | return |
14f9c5c9 | 2078 | type != NULL |
78134374 | 2079 | && type->code () == TYPE_CODE_STRUCT |
14f9c5c9 | 2080 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL |
dda83cd7 | 2081 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
4c4b4cd2 | 2082 | && !ada_is_array_descriptor_type (type); |
14f9c5c9 AS |
2083 | } |
2084 | ||
2085 | ||
4c4b4cd2 | 2086 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 2087 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 2088 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 2089 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
2090 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
2091 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 2092 | a descriptor. */ |
de93309a SM |
2093 | |
2094 | static struct type * | |
d2e4a39e | 2095 | ada_type_of_array (struct value *arr, int bounds) |
14f9c5c9 | 2096 | { |
ad82864c JB |
2097 | if (ada_is_constrained_packed_array_type (value_type (arr))) |
2098 | return decode_constrained_packed_array_type (value_type (arr)); | |
14f9c5c9 | 2099 | |
df407dfe AC |
2100 | if (!ada_is_array_descriptor_type (value_type (arr))) |
2101 | return value_type (arr); | |
d2e4a39e AS |
2102 | |
2103 | if (!bounds) | |
ad82864c JB |
2104 | { |
2105 | struct type *array_type = | |
2106 | ada_check_typedef (desc_data_target_type (value_type (arr))); | |
2107 | ||
2108 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
2109 | TYPE_FIELD_BITSIZE (array_type, 0) = | |
2110 | decode_packed_array_bitsize (value_type (arr)); | |
2111 | ||
2112 | return array_type; | |
2113 | } | |
14f9c5c9 AS |
2114 | else |
2115 | { | |
d2e4a39e | 2116 | struct type *elt_type; |
14f9c5c9 | 2117 | int arity; |
d2e4a39e | 2118 | struct value *descriptor; |
14f9c5c9 | 2119 | |
df407dfe AC |
2120 | elt_type = ada_array_element_type (value_type (arr), -1); |
2121 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 2122 | |
d2e4a39e | 2123 | if (elt_type == NULL || arity == 0) |
dda83cd7 | 2124 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2125 | |
2126 | descriptor = desc_bounds (arr); | |
d2e4a39e | 2127 | if (value_as_long (descriptor) == 0) |
dda83cd7 | 2128 | return NULL; |
d2e4a39e | 2129 | while (arity > 0) |
dda83cd7 SM |
2130 | { |
2131 | struct type *range_type = alloc_type_copy (value_type (arr)); | |
2132 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
2133 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
2134 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
2135 | ||
2136 | arity -= 1; | |
2137 | create_static_range_type (range_type, value_type (low), | |
0c9c3474 SA |
2138 | longest_to_int (value_as_long (low)), |
2139 | longest_to_int (value_as_long (high))); | |
dda83cd7 | 2140 | elt_type = create_array_type (array_type, elt_type, range_type); |
ad82864c JB |
2141 | |
2142 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
e67ad678 JB |
2143 | { |
2144 | /* We need to store the element packed bitsize, as well as | |
dda83cd7 | 2145 | recompute the array size, because it was previously |
e67ad678 JB |
2146 | computed based on the unpacked element size. */ |
2147 | LONGEST lo = value_as_long (low); | |
2148 | LONGEST hi = value_as_long (high); | |
2149 | ||
2150 | TYPE_FIELD_BITSIZE (elt_type, 0) = | |
2151 | decode_packed_array_bitsize (value_type (arr)); | |
2152 | /* If the array has no element, then the size is already | |
dda83cd7 | 2153 | zero, and does not need to be recomputed. */ |
e67ad678 JB |
2154 | if (lo < hi) |
2155 | { | |
2156 | int array_bitsize = | |
dda83cd7 | 2157 | (hi - lo + 1) * TYPE_FIELD_BITSIZE (elt_type, 0); |
e67ad678 JB |
2158 | |
2159 | TYPE_LENGTH (array_type) = (array_bitsize + 7) / 8; | |
2160 | } | |
2161 | } | |
dda83cd7 | 2162 | } |
14f9c5c9 AS |
2163 | |
2164 | return lookup_pointer_type (elt_type); | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
2169 | Otherwise, returns either a standard GDB array with bounds set |
2170 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
2171 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
2172 | ||
d2e4a39e AS |
2173 | struct value * |
2174 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 2175 | { |
df407dfe | 2176 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2177 | { |
d2e4a39e | 2178 | struct type *arrType = ada_type_of_array (arr, 1); |
5b4ee69b | 2179 | |
14f9c5c9 | 2180 | if (arrType == NULL) |
dda83cd7 | 2181 | return NULL; |
14f9c5c9 AS |
2182 | return value_cast (arrType, value_copy (desc_data (arr))); |
2183 | } | |
ad82864c JB |
2184 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2185 | return decode_constrained_packed_array (arr); | |
14f9c5c9 AS |
2186 | else |
2187 | return arr; | |
2188 | } | |
2189 | ||
2190 | /* If ARR does not represent an array, returns ARR unchanged. | |
2191 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
2192 | be ARR itself if it already is in the proper form). */ |
2193 | ||
720d1a40 | 2194 | struct value * |
d2e4a39e | 2195 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 2196 | { |
df407dfe | 2197 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 2198 | { |
d2e4a39e | 2199 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
5b4ee69b | 2200 | |
14f9c5c9 | 2201 | if (arrVal == NULL) |
dda83cd7 | 2202 | error (_("Bounds unavailable for null array pointer.")); |
14f9c5c9 AS |
2203 | return value_ind (arrVal); |
2204 | } | |
ad82864c JB |
2205 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
2206 | return decode_constrained_packed_array (arr); | |
d2e4a39e | 2207 | else |
14f9c5c9 AS |
2208 | return arr; |
2209 | } | |
2210 | ||
2211 | /* If TYPE represents a GNAT array type, return it translated to an | |
2212 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
2213 | packing). For other types, is the identity. */ |
2214 | ||
d2e4a39e AS |
2215 | struct type * |
2216 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 2217 | { |
ad82864c JB |
2218 | if (ada_is_constrained_packed_array_type (type)) |
2219 | return decode_constrained_packed_array_type (type); | |
17280b9f UW |
2220 | |
2221 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 2222 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
2223 | |
2224 | return type; | |
14f9c5c9 AS |
2225 | } |
2226 | ||
4c4b4cd2 PH |
2227 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
2228 | ||
ad82864c | 2229 | static int |
57567375 | 2230 | ada_is_gnat_encoded_packed_array_type (struct type *type) |
14f9c5c9 AS |
2231 | { |
2232 | if (type == NULL) | |
2233 | return 0; | |
4c4b4cd2 | 2234 | type = desc_base_type (type); |
61ee279c | 2235 | type = ada_check_typedef (type); |
d2e4a39e | 2236 | return |
14f9c5c9 AS |
2237 | ada_type_name (type) != NULL |
2238 | && strstr (ada_type_name (type), "___XP") != NULL; | |
2239 | } | |
2240 | ||
ad82864c JB |
2241 | /* Non-zero iff TYPE represents a standard GNAT constrained |
2242 | packed-array type. */ | |
2243 | ||
2244 | int | |
2245 | ada_is_constrained_packed_array_type (struct type *type) | |
2246 | { | |
57567375 | 2247 | return ada_is_gnat_encoded_packed_array_type (type) |
ad82864c JB |
2248 | && !ada_is_array_descriptor_type (type); |
2249 | } | |
2250 | ||
2251 | /* Non-zero iff TYPE represents an array descriptor for a | |
2252 | unconstrained packed-array type. */ | |
2253 | ||
2254 | static int | |
2255 | ada_is_unconstrained_packed_array_type (struct type *type) | |
2256 | { | |
57567375 TT |
2257 | if (!ada_is_array_descriptor_type (type)) |
2258 | return 0; | |
2259 | ||
2260 | if (ada_is_gnat_encoded_packed_array_type (type)) | |
2261 | return 1; | |
2262 | ||
2263 | /* If we saw GNAT encodings, then the above code is sufficient. | |
2264 | However, with minimal encodings, we will just have a thick | |
2265 | pointer instead. */ | |
2266 | if (is_thick_pntr (type)) | |
2267 | { | |
2268 | type = desc_base_type (type); | |
2269 | /* The structure's first field is a pointer to an array, so this | |
2270 | fetches the array type. */ | |
2271 | type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
af5300fe TV |
2272 | if (type->code () == TYPE_CODE_TYPEDEF) |
2273 | type = ada_typedef_target_type (type); | |
57567375 TT |
2274 | /* Now we can see if the array elements are packed. */ |
2275 | return TYPE_FIELD_BITSIZE (type, 0) > 0; | |
2276 | } | |
2277 | ||
2278 | return 0; | |
ad82864c JB |
2279 | } |
2280 | ||
c9a28cbe TT |
2281 | /* Return true if TYPE is a (Gnat-encoded) constrained packed array |
2282 | type, or if it is an ordinary (non-Gnat-encoded) packed array. */ | |
2283 | ||
2284 | static bool | |
2285 | ada_is_any_packed_array_type (struct type *type) | |
2286 | { | |
2287 | return (ada_is_constrained_packed_array_type (type) | |
2288 | || (type->code () == TYPE_CODE_ARRAY | |
2289 | && TYPE_FIELD_BITSIZE (type, 0) % 8 != 0)); | |
2290 | } | |
2291 | ||
ad82864c JB |
2292 | /* Given that TYPE encodes a packed array type (constrained or unconstrained), |
2293 | return the size of its elements in bits. */ | |
2294 | ||
2295 | static long | |
2296 | decode_packed_array_bitsize (struct type *type) | |
2297 | { | |
0d5cff50 DE |
2298 | const char *raw_name; |
2299 | const char *tail; | |
ad82864c JB |
2300 | long bits; |
2301 | ||
720d1a40 JB |
2302 | /* Access to arrays implemented as fat pointers are encoded as a typedef |
2303 | of the fat pointer type. We need the name of the fat pointer type | |
2304 | to do the decoding, so strip the typedef layer. */ | |
78134374 | 2305 | if (type->code () == TYPE_CODE_TYPEDEF) |
720d1a40 JB |
2306 | type = ada_typedef_target_type (type); |
2307 | ||
2308 | raw_name = ada_type_name (ada_check_typedef (type)); | |
ad82864c JB |
2309 | if (!raw_name) |
2310 | raw_name = ada_type_name (desc_base_type (type)); | |
2311 | ||
2312 | if (!raw_name) | |
2313 | return 0; | |
2314 | ||
2315 | tail = strstr (raw_name, "___XP"); | |
57567375 TT |
2316 | if (tail == nullptr) |
2317 | { | |
2318 | gdb_assert (is_thick_pntr (type)); | |
2319 | /* The structure's first field is a pointer to an array, so this | |
2320 | fetches the array type. */ | |
2321 | type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
2322 | /* Now we can see if the array elements are packed. */ | |
2323 | return TYPE_FIELD_BITSIZE (type, 0); | |
2324 | } | |
ad82864c JB |
2325 | |
2326 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) | |
2327 | { | |
2328 | lim_warning | |
2329 | (_("could not understand bit size information on packed array")); | |
2330 | return 0; | |
2331 | } | |
2332 | ||
2333 | return bits; | |
2334 | } | |
2335 | ||
14f9c5c9 AS |
2336 | /* Given that TYPE is a standard GDB array type with all bounds filled |
2337 | in, and that the element size of its ultimate scalar constituents | |
2338 | (that is, either its elements, or, if it is an array of arrays, its | |
2339 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
2340 | but with the bit sizes of its elements (and those of any | |
2341 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 | 2342 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
4a46959e JB |
2343 | in bits. |
2344 | ||
2345 | Note that, for arrays whose index type has an XA encoding where | |
2346 | a bound references a record discriminant, getting that discriminant, | |
2347 | and therefore the actual value of that bound, is not possible | |
2348 | because none of the given parameters gives us access to the record. | |
2349 | This function assumes that it is OK in the context where it is being | |
2350 | used to return an array whose bounds are still dynamic and where | |
2351 | the length is arbitrary. */ | |
4c4b4cd2 | 2352 | |
d2e4a39e | 2353 | static struct type * |
ad82864c | 2354 | constrained_packed_array_type (struct type *type, long *elt_bits) |
14f9c5c9 | 2355 | { |
d2e4a39e AS |
2356 | struct type *new_elt_type; |
2357 | struct type *new_type; | |
99b1c762 JB |
2358 | struct type *index_type_desc; |
2359 | struct type *index_type; | |
14f9c5c9 AS |
2360 | LONGEST low_bound, high_bound; |
2361 | ||
61ee279c | 2362 | type = ada_check_typedef (type); |
78134374 | 2363 | if (type->code () != TYPE_CODE_ARRAY) |
14f9c5c9 AS |
2364 | return type; |
2365 | ||
99b1c762 JB |
2366 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
2367 | if (index_type_desc) | |
940da03e | 2368 | index_type = to_fixed_range_type (index_type_desc->field (0).type (), |
99b1c762 JB |
2369 | NULL); |
2370 | else | |
3d967001 | 2371 | index_type = type->index_type (); |
99b1c762 | 2372 | |
e9bb382b | 2373 | new_type = alloc_type_copy (type); |
ad82864c JB |
2374 | new_elt_type = |
2375 | constrained_packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), | |
2376 | elt_bits); | |
99b1c762 | 2377 | create_array_type (new_type, new_elt_type, index_type); |
14f9c5c9 | 2378 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
d0e39ea2 | 2379 | new_type->set_name (ada_type_name (type)); |
14f9c5c9 | 2380 | |
78134374 | 2381 | if ((check_typedef (index_type)->code () == TYPE_CODE_RANGE |
4a46959e | 2382 | && is_dynamic_type (check_typedef (index_type))) |
1f8d2881 | 2383 | || !get_discrete_bounds (index_type, &low_bound, &high_bound)) |
14f9c5c9 AS |
2384 | low_bound = high_bound = 0; |
2385 | if (high_bound < low_bound) | |
2386 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 2387 | else |
14f9c5c9 AS |
2388 | { |
2389 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 2390 | TYPE_LENGTH (new_type) = |
dda83cd7 | 2391 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
2392 | } |
2393 | ||
9cdd0d12 | 2394 | new_type->set_is_fixed_instance (true); |
14f9c5c9 AS |
2395 | return new_type; |
2396 | } | |
2397 | ||
ad82864c JB |
2398 | /* The array type encoded by TYPE, where |
2399 | ada_is_constrained_packed_array_type (TYPE). */ | |
4c4b4cd2 | 2400 | |
d2e4a39e | 2401 | static struct type * |
ad82864c | 2402 | decode_constrained_packed_array_type (struct type *type) |
d2e4a39e | 2403 | { |
0d5cff50 | 2404 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
727e3d2e | 2405 | char *name; |
0d5cff50 | 2406 | const char *tail; |
d2e4a39e | 2407 | struct type *shadow_type; |
14f9c5c9 | 2408 | long bits; |
14f9c5c9 | 2409 | |
727e3d2e JB |
2410 | if (!raw_name) |
2411 | raw_name = ada_type_name (desc_base_type (type)); | |
2412 | ||
2413 | if (!raw_name) | |
2414 | return NULL; | |
2415 | ||
2416 | name = (char *) alloca (strlen (raw_name) + 1); | |
2417 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
2418 | type = desc_base_type (type); |
2419 | ||
14f9c5c9 AS |
2420 | memcpy (name, raw_name, tail - raw_name); |
2421 | name[tail - raw_name] = '\000'; | |
2422 | ||
b4ba55a1 JB |
2423 | shadow_type = ada_find_parallel_type_with_name (type, name); |
2424 | ||
2425 | if (shadow_type == NULL) | |
14f9c5c9 | 2426 | { |
323e0a4a | 2427 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
2428 | return NULL; |
2429 | } | |
f168693b | 2430 | shadow_type = check_typedef (shadow_type); |
14f9c5c9 | 2431 | |
78134374 | 2432 | if (shadow_type->code () != TYPE_CODE_ARRAY) |
14f9c5c9 | 2433 | { |
0963b4bd MS |
2434 | lim_warning (_("could not understand bounds " |
2435 | "information on packed array")); | |
14f9c5c9 AS |
2436 | return NULL; |
2437 | } | |
d2e4a39e | 2438 | |
ad82864c JB |
2439 | bits = decode_packed_array_bitsize (type); |
2440 | return constrained_packed_array_type (shadow_type, &bits); | |
14f9c5c9 AS |
2441 | } |
2442 | ||
a7400e44 TT |
2443 | /* Helper function for decode_constrained_packed_array. Set the field |
2444 | bitsize on a series of packed arrays. Returns the number of | |
2445 | elements in TYPE. */ | |
2446 | ||
2447 | static LONGEST | |
2448 | recursively_update_array_bitsize (struct type *type) | |
2449 | { | |
2450 | gdb_assert (type->code () == TYPE_CODE_ARRAY); | |
2451 | ||
2452 | LONGEST low, high; | |
1f8d2881 | 2453 | if (!get_discrete_bounds (type->index_type (), &low, &high) |
a7400e44 TT |
2454 | || low > high) |
2455 | return 0; | |
2456 | LONGEST our_len = high - low + 1; | |
2457 | ||
2458 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
2459 | if (elt_type->code () == TYPE_CODE_ARRAY) | |
2460 | { | |
2461 | LONGEST elt_len = recursively_update_array_bitsize (elt_type); | |
2462 | LONGEST elt_bitsize = elt_len * TYPE_FIELD_BITSIZE (elt_type, 0); | |
2463 | TYPE_FIELD_BITSIZE (type, 0) = elt_bitsize; | |
2464 | ||
2465 | TYPE_LENGTH (type) = ((our_len * elt_bitsize + HOST_CHAR_BIT - 1) | |
2466 | / HOST_CHAR_BIT); | |
2467 | } | |
2468 | ||
2469 | return our_len; | |
2470 | } | |
2471 | ||
ad82864c JB |
2472 | /* Given that ARR is a struct value *indicating a GNAT constrained packed |
2473 | array, returns a simple array that denotes that array. Its type is a | |
14f9c5c9 AS |
2474 | standard GDB array type except that the BITSIZEs of the array |
2475 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 2476 | type length is set appropriately. */ |
14f9c5c9 | 2477 | |
d2e4a39e | 2478 | static struct value * |
ad82864c | 2479 | decode_constrained_packed_array (struct value *arr) |
14f9c5c9 | 2480 | { |
4c4b4cd2 | 2481 | struct type *type; |
14f9c5c9 | 2482 | |
11aa919a PMR |
2483 | /* If our value is a pointer, then dereference it. Likewise if |
2484 | the value is a reference. Make sure that this operation does not | |
2485 | cause the target type to be fixed, as this would indirectly cause | |
2486 | this array to be decoded. The rest of the routine assumes that | |
2487 | the array hasn't been decoded yet, so we use the basic "coerce_ref" | |
2488 | and "value_ind" routines to perform the dereferencing, as opposed | |
2489 | to using "ada_coerce_ref" or "ada_value_ind". */ | |
2490 | arr = coerce_ref (arr); | |
78134374 | 2491 | if (ada_check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
284614f0 | 2492 | arr = value_ind (arr); |
4c4b4cd2 | 2493 | |
ad82864c | 2494 | type = decode_constrained_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
2495 | if (type == NULL) |
2496 | { | |
323e0a4a | 2497 | error (_("can't unpack array")); |
14f9c5c9 AS |
2498 | return NULL; |
2499 | } | |
61ee279c | 2500 | |
a7400e44 TT |
2501 | /* Decoding the packed array type could not correctly set the field |
2502 | bitsizes for any dimension except the innermost, because the | |
2503 | bounds may be variable and were not passed to that function. So, | |
2504 | we further resolve the array bounds here and then update the | |
2505 | sizes. */ | |
50888e42 | 2506 | const gdb_byte *valaddr = value_contents_for_printing (arr).data (); |
a7400e44 TT |
2507 | CORE_ADDR address = value_address (arr); |
2508 | gdb::array_view<const gdb_byte> view | |
2509 | = gdb::make_array_view (valaddr, TYPE_LENGTH (type)); | |
2510 | type = resolve_dynamic_type (type, view, address); | |
2511 | recursively_update_array_bitsize (type); | |
2512 | ||
d5a22e77 | 2513 | if (type_byte_order (value_type (arr)) == BFD_ENDIAN_BIG |
32c9a795 | 2514 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
2515 | { |
2516 | /* This is a (right-justified) modular type representing a packed | |
24b21115 SM |
2517 | array with no wrapper. In order to interpret the value through |
2518 | the (left-justified) packed array type we just built, we must | |
2519 | first left-justify it. */ | |
61ee279c PH |
2520 | int bit_size, bit_pos; |
2521 | ULONGEST mod; | |
2522 | ||
df407dfe | 2523 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
2524 | bit_size = 0; |
2525 | while (mod > 0) | |
2526 | { | |
2527 | bit_size += 1; | |
2528 | mod >>= 1; | |
2529 | } | |
df407dfe | 2530 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
2531 | arr = ada_value_primitive_packed_val (arr, NULL, |
2532 | bit_pos / HOST_CHAR_BIT, | |
2533 | bit_pos % HOST_CHAR_BIT, | |
2534 | bit_size, | |
2535 | type); | |
2536 | } | |
2537 | ||
4c4b4cd2 | 2538 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
2539 | } |
2540 | ||
2541 | ||
2542 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 2543 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 2544 | |
d2e4a39e AS |
2545 | static struct value * |
2546 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2547 | { |
2548 | int i; | |
2549 | int bits, elt_off, bit_off; | |
2550 | long elt_total_bit_offset; | |
d2e4a39e AS |
2551 | struct type *elt_type; |
2552 | struct value *v; | |
14f9c5c9 AS |
2553 | |
2554 | bits = 0; | |
2555 | elt_total_bit_offset = 0; | |
df407dfe | 2556 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 2557 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 2558 | { |
78134374 | 2559 | if (elt_type->code () != TYPE_CODE_ARRAY |
dda83cd7 SM |
2560 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
2561 | error | |
2562 | (_("attempt to do packed indexing of " | |
0963b4bd | 2563 | "something other than a packed array")); |
14f9c5c9 | 2564 | else |
dda83cd7 SM |
2565 | { |
2566 | struct type *range_type = elt_type->index_type (); | |
2567 | LONGEST lowerbound, upperbound; | |
2568 | LONGEST idx; | |
2569 | ||
1f8d2881 | 2570 | if (!get_discrete_bounds (range_type, &lowerbound, &upperbound)) |
dda83cd7 SM |
2571 | { |
2572 | lim_warning (_("don't know bounds of array")); | |
2573 | lowerbound = upperbound = 0; | |
2574 | } | |
2575 | ||
2576 | idx = pos_atr (ind[i]); | |
2577 | if (idx < lowerbound || idx > upperbound) | |
2578 | lim_warning (_("packed array index %ld out of bounds"), | |
0963b4bd | 2579 | (long) idx); |
dda83cd7 SM |
2580 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
2581 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
2582 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
2583 | } | |
14f9c5c9 AS |
2584 | } |
2585 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
2586 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
2587 | |
2588 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
dda83cd7 | 2589 | bits, elt_type); |
14f9c5c9 AS |
2590 | return v; |
2591 | } | |
2592 | ||
4c4b4cd2 | 2593 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
2594 | |
2595 | static int | |
d2e4a39e | 2596 | has_negatives (struct type *type) |
14f9c5c9 | 2597 | { |
78134374 | 2598 | switch (type->code ()) |
d2e4a39e AS |
2599 | { |
2600 | default: | |
2601 | return 0; | |
2602 | case TYPE_CODE_INT: | |
c6d940a9 | 2603 | return !type->is_unsigned (); |
d2e4a39e | 2604 | case TYPE_CODE_RANGE: |
5537ddd0 | 2605 | return type->bounds ()->low.const_val () - type->bounds ()->bias < 0; |
d2e4a39e | 2606 | } |
14f9c5c9 | 2607 | } |
d2e4a39e | 2608 | |
f93fca70 | 2609 | /* With SRC being a buffer containing BIT_SIZE bits of data at BIT_OFFSET, |
5b639dea | 2610 | unpack that data into UNPACKED. UNPACKED_LEN is the size in bytes of |
f93fca70 | 2611 | the unpacked buffer. |
14f9c5c9 | 2612 | |
5b639dea JB |
2613 | The size of the unpacked buffer (UNPACKED_LEN) is expected to be large |
2614 | enough to contain at least BIT_OFFSET bits. If not, an error is raised. | |
2615 | ||
f93fca70 JB |
2616 | IS_BIG_ENDIAN is nonzero if the data is stored in big endian mode, |
2617 | zero otherwise. | |
14f9c5c9 | 2618 | |
f93fca70 | 2619 | IS_SIGNED_TYPE is nonzero if the data corresponds to a signed type. |
a1c95e6b | 2620 | |
f93fca70 JB |
2621 | IS_SCALAR is nonzero if the data corresponds to a signed type. */ |
2622 | ||
2623 | static void | |
2624 | ada_unpack_from_contents (const gdb_byte *src, int bit_offset, int bit_size, | |
2625 | gdb_byte *unpacked, int unpacked_len, | |
2626 | int is_big_endian, int is_signed_type, | |
2627 | int is_scalar) | |
2628 | { | |
a1c95e6b JB |
2629 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
2630 | int src_idx; /* Index into the source area */ | |
2631 | int src_bytes_left; /* Number of source bytes left to process. */ | |
2632 | int srcBitsLeft; /* Number of source bits left to move */ | |
2633 | int unusedLS; /* Number of bits in next significant | |
dda83cd7 | 2634 | byte of source that are unused */ |
a1c95e6b | 2635 | |
a1c95e6b JB |
2636 | int unpacked_idx; /* Index into the unpacked buffer */ |
2637 | int unpacked_bytes_left; /* Number of bytes left to set in unpacked. */ | |
2638 | ||
4c4b4cd2 | 2639 | unsigned long accum; /* Staging area for bits being transferred */ |
a1c95e6b | 2640 | int accumSize; /* Number of meaningful bits in accum */ |
14f9c5c9 | 2641 | unsigned char sign; |
a1c95e6b | 2642 | |
4c4b4cd2 PH |
2643 | /* Transmit bytes from least to most significant; delta is the direction |
2644 | the indices move. */ | |
f93fca70 | 2645 | int delta = is_big_endian ? -1 : 1; |
14f9c5c9 | 2646 | |
5b639dea JB |
2647 | /* Make sure that unpacked is large enough to receive the BIT_SIZE |
2648 | bits from SRC. .*/ | |
2649 | if ((bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT > unpacked_len) | |
2650 | error (_("Cannot unpack %d bits into buffer of %d bytes"), | |
2651 | bit_size, unpacked_len); | |
2652 | ||
14f9c5c9 | 2653 | srcBitsLeft = bit_size; |
086ca51f | 2654 | src_bytes_left = src_len; |
f93fca70 | 2655 | unpacked_bytes_left = unpacked_len; |
14f9c5c9 | 2656 | sign = 0; |
f93fca70 JB |
2657 | |
2658 | if (is_big_endian) | |
14f9c5c9 | 2659 | { |
086ca51f | 2660 | src_idx = src_len - 1; |
f93fca70 JB |
2661 | if (is_signed_type |
2662 | && ((src[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
dda83cd7 | 2663 | sign = ~0; |
d2e4a39e AS |
2664 | |
2665 | unusedLS = | |
dda83cd7 SM |
2666 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2667 | % HOST_CHAR_BIT; | |
14f9c5c9 | 2668 | |
f93fca70 JB |
2669 | if (is_scalar) |
2670 | { | |
dda83cd7 SM |
2671 | accumSize = 0; |
2672 | unpacked_idx = unpacked_len - 1; | |
f93fca70 JB |
2673 | } |
2674 | else | |
2675 | { | |
dda83cd7 SM |
2676 | /* Non-scalar values must be aligned at a byte boundary... */ |
2677 | accumSize = | |
2678 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2679 | /* ... And are placed at the beginning (most-significant) bytes | |
2680 | of the target. */ | |
2681 | unpacked_idx = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; | |
2682 | unpacked_bytes_left = unpacked_idx + 1; | |
f93fca70 | 2683 | } |
14f9c5c9 | 2684 | } |
d2e4a39e | 2685 | else |
14f9c5c9 AS |
2686 | { |
2687 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2688 | ||
086ca51f | 2689 | src_idx = unpacked_idx = 0; |
14f9c5c9 AS |
2690 | unusedLS = bit_offset; |
2691 | accumSize = 0; | |
2692 | ||
f93fca70 | 2693 | if (is_signed_type && (src[src_len - 1] & (1 << sign_bit_offset))) |
dda83cd7 | 2694 | sign = ~0; |
14f9c5c9 | 2695 | } |
d2e4a39e | 2696 | |
14f9c5c9 | 2697 | accum = 0; |
086ca51f | 2698 | while (src_bytes_left > 0) |
14f9c5c9 AS |
2699 | { |
2700 | /* Mask for removing bits of the next source byte that are not | |
dda83cd7 | 2701 | part of the value. */ |
d2e4a39e | 2702 | unsigned int unusedMSMask = |
dda83cd7 SM |
2703 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2704 | 1; | |
4c4b4cd2 | 2705 | /* Sign-extend bits for this byte. */ |
14f9c5c9 | 2706 | unsigned int signMask = sign & ~unusedMSMask; |
5b4ee69b | 2707 | |
d2e4a39e | 2708 | accum |= |
dda83cd7 | 2709 | (((src[src_idx] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2710 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2711 | if (accumSize >= HOST_CHAR_BIT) |
dda83cd7 SM |
2712 | { |
2713 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); | |
2714 | accumSize -= HOST_CHAR_BIT; | |
2715 | accum >>= HOST_CHAR_BIT; | |
2716 | unpacked_bytes_left -= 1; | |
2717 | unpacked_idx += delta; | |
2718 | } | |
14f9c5c9 AS |
2719 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2720 | unusedLS = 0; | |
086ca51f JB |
2721 | src_bytes_left -= 1; |
2722 | src_idx += delta; | |
14f9c5c9 | 2723 | } |
086ca51f | 2724 | while (unpacked_bytes_left > 0) |
14f9c5c9 AS |
2725 | { |
2726 | accum |= sign << accumSize; | |
db297a65 | 2727 | unpacked[unpacked_idx] = accum & ~(~0UL << HOST_CHAR_BIT); |
14f9c5c9 | 2728 | accumSize -= HOST_CHAR_BIT; |
9cd4d857 JB |
2729 | if (accumSize < 0) |
2730 | accumSize = 0; | |
14f9c5c9 | 2731 | accum >>= HOST_CHAR_BIT; |
086ca51f JB |
2732 | unpacked_bytes_left -= 1; |
2733 | unpacked_idx += delta; | |
14f9c5c9 | 2734 | } |
f93fca70 JB |
2735 | } |
2736 | ||
2737 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2738 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2739 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
2740 | assigning through the result will set the field fetched from. | |
2741 | VALADDR is ignored unless OBJ is NULL, in which case, | |
2742 | VALADDR+OFFSET must address the start of storage containing the | |
2743 | packed value. The value returned in this case is never an lval. | |
2744 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
2745 | ||
2746 | struct value * | |
2747 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, | |
2748 | long offset, int bit_offset, int bit_size, | |
dda83cd7 | 2749 | struct type *type) |
f93fca70 JB |
2750 | { |
2751 | struct value *v; | |
bfb1c796 | 2752 | const gdb_byte *src; /* First byte containing data to unpack */ |
f93fca70 | 2753 | gdb_byte *unpacked; |
220475ed | 2754 | const int is_scalar = is_scalar_type (type); |
d5a22e77 | 2755 | const int is_big_endian = type_byte_order (type) == BFD_ENDIAN_BIG; |
d5722aa2 | 2756 | gdb::byte_vector staging; |
f93fca70 JB |
2757 | |
2758 | type = ada_check_typedef (type); | |
2759 | ||
d0a9e810 | 2760 | if (obj == NULL) |
bfb1c796 | 2761 | src = valaddr + offset; |
d0a9e810 | 2762 | else |
50888e42 | 2763 | src = value_contents (obj).data () + offset; |
d0a9e810 JB |
2764 | |
2765 | if (is_dynamic_type (type)) | |
2766 | { | |
2767 | /* The length of TYPE might by dynamic, so we need to resolve | |
2768 | TYPE in order to know its actual size, which we then use | |
2769 | to create the contents buffer of the value we return. | |
2770 | The difficulty is that the data containing our object is | |
2771 | packed, and therefore maybe not at a byte boundary. So, what | |
2772 | we do, is unpack the data into a byte-aligned buffer, and then | |
2773 | use that buffer as our object's value for resolving the type. */ | |
d5722aa2 PA |
2774 | int staging_len = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
2775 | staging.resize (staging_len); | |
d0a9e810 JB |
2776 | |
2777 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
dda83cd7 | 2778 | staging.data (), staging.size (), |
d0a9e810 JB |
2779 | is_big_endian, has_negatives (type), |
2780 | is_scalar); | |
b249d2c2 | 2781 | type = resolve_dynamic_type (type, staging, 0); |
0cafa88c JB |
2782 | if (TYPE_LENGTH (type) < (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT) |
2783 | { | |
2784 | /* This happens when the length of the object is dynamic, | |
2785 | and is actually smaller than the space reserved for it. | |
2786 | For instance, in an array of variant records, the bit_size | |
2787 | we're given is the array stride, which is constant and | |
2788 | normally equal to the maximum size of its element. | |
2789 | But, in reality, each element only actually spans a portion | |
2790 | of that stride. */ | |
2791 | bit_size = TYPE_LENGTH (type) * HOST_CHAR_BIT; | |
2792 | } | |
d0a9e810 JB |
2793 | } |
2794 | ||
f93fca70 JB |
2795 | if (obj == NULL) |
2796 | { | |
2797 | v = allocate_value (type); | |
bfb1c796 | 2798 | src = valaddr + offset; |
f93fca70 JB |
2799 | } |
2800 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) | |
2801 | { | |
0cafa88c | 2802 | int src_len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; |
bfb1c796 | 2803 | gdb_byte *buf; |
0cafa88c | 2804 | |
f93fca70 | 2805 | v = value_at (type, value_address (obj) + offset); |
bfb1c796 PA |
2806 | buf = (gdb_byte *) alloca (src_len); |
2807 | read_memory (value_address (v), buf, src_len); | |
2808 | src = buf; | |
f93fca70 JB |
2809 | } |
2810 | else | |
2811 | { | |
2812 | v = allocate_value (type); | |
50888e42 | 2813 | src = value_contents (obj).data () + offset; |
f93fca70 JB |
2814 | } |
2815 | ||
2816 | if (obj != NULL) | |
2817 | { | |
2818 | long new_offset = offset; | |
2819 | ||
2820 | set_value_component_location (v, obj); | |
2821 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); | |
2822 | set_value_bitsize (v, bit_size); | |
2823 | if (value_bitpos (v) >= HOST_CHAR_BIT) | |
dda83cd7 | 2824 | { |
f93fca70 | 2825 | ++new_offset; |
dda83cd7 SM |
2826 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
2827 | } | |
f93fca70 JB |
2828 | set_value_offset (v, new_offset); |
2829 | ||
2830 | /* Also set the parent value. This is needed when trying to | |
2831 | assign a new value (in inferior memory). */ | |
2832 | set_value_parent (v, obj); | |
2833 | } | |
2834 | else | |
2835 | set_value_bitsize (v, bit_size); | |
50888e42 | 2836 | unpacked = value_contents_writeable (v).data (); |
f93fca70 JB |
2837 | |
2838 | if (bit_size == 0) | |
2839 | { | |
2840 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2841 | return v; | |
2842 | } | |
2843 | ||
d5722aa2 | 2844 | if (staging.size () == TYPE_LENGTH (type)) |
f93fca70 | 2845 | { |
d0a9e810 JB |
2846 | /* Small short-cut: If we've unpacked the data into a buffer |
2847 | of the same size as TYPE's length, then we can reuse that, | |
2848 | instead of doing the unpacking again. */ | |
d5722aa2 | 2849 | memcpy (unpacked, staging.data (), staging.size ()); |
f93fca70 | 2850 | } |
d0a9e810 JB |
2851 | else |
2852 | ada_unpack_from_contents (src, bit_offset, bit_size, | |
2853 | unpacked, TYPE_LENGTH (type), | |
2854 | is_big_endian, has_negatives (type), is_scalar); | |
f93fca70 | 2855 | |
14f9c5c9 AS |
2856 | return v; |
2857 | } | |
d2e4a39e | 2858 | |
14f9c5c9 AS |
2859 | /* Store the contents of FROMVAL into the location of TOVAL. |
2860 | Return a new value with the location of TOVAL and contents of | |
2861 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2862 | floating-point or non-scalar types. */ |
14f9c5c9 | 2863 | |
d2e4a39e AS |
2864 | static struct value * |
2865 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2866 | { |
df407dfe AC |
2867 | struct type *type = value_type (toval); |
2868 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2869 | |
52ce6436 PH |
2870 | toval = ada_coerce_ref (toval); |
2871 | fromval = ada_coerce_ref (fromval); | |
2872 | ||
2873 | if (ada_is_direct_array_type (value_type (toval))) | |
2874 | toval = ada_coerce_to_simple_array (toval); | |
2875 | if (ada_is_direct_array_type (value_type (fromval))) | |
2876 | fromval = ada_coerce_to_simple_array (fromval); | |
2877 | ||
88e3b34b | 2878 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2879 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2880 | |
d2e4a39e | 2881 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2882 | && bits > 0 |
78134374 | 2883 | && (type->code () == TYPE_CODE_FLT |
dda83cd7 | 2884 | || type->code () == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2885 | { |
df407dfe AC |
2886 | int len = (value_bitpos (toval) |
2887 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2888 | int from_size; |
224c3ddb | 2889 | gdb_byte *buffer = (gdb_byte *) alloca (len); |
d2e4a39e | 2890 | struct value *val; |
42ae5230 | 2891 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 | 2892 | |
78134374 | 2893 | if (type->code () == TYPE_CODE_FLT) |
dda83cd7 | 2894 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2895 | |
52ce6436 | 2896 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2897 | from_size = value_bitsize (fromval); |
2898 | if (from_size == 0) | |
2899 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
d48e62f4 | 2900 | |
d5a22e77 | 2901 | const int is_big_endian = type_byte_order (type) == BFD_ENDIAN_BIG; |
d48e62f4 TT |
2902 | ULONGEST from_offset = 0; |
2903 | if (is_big_endian && is_scalar_type (value_type (fromval))) | |
2904 | from_offset = from_size - bits; | |
2905 | copy_bitwise (buffer, value_bitpos (toval), | |
50888e42 | 2906 | value_contents (fromval).data (), from_offset, |
d48e62f4 | 2907 | bits, is_big_endian); |
972daa01 | 2908 | write_memory_with_notification (to_addr, buffer, len); |
8cebebb9 | 2909 | |
14f9c5c9 | 2910 | val = value_copy (toval); |
fb2a515f SM |
2911 | memcpy (value_contents_raw (val).data (), |
2912 | value_contents (fromval).data (), | |
2913 | TYPE_LENGTH (type)); | |
04624583 | 2914 | deprecated_set_value_type (val, type); |
d2e4a39e | 2915 | |
14f9c5c9 AS |
2916 | return val; |
2917 | } | |
2918 | ||
2919 | return value_assign (toval, fromval); | |
2920 | } | |
2921 | ||
2922 | ||
7c512744 JB |
2923 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2924 | CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2925 | CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2926 | COMPONENT, and not the inferior's memory. The current contents | |
2927 | of COMPONENT are ignored. | |
2928 | ||
2929 | Although not part of the initial design, this function also works | |
2930 | when CONTAINER and COMPONENT are not_lval's: it works as if CONTAINER | |
2931 | had a null address, and COMPONENT had an address which is equal to | |
2932 | its offset inside CONTAINER. */ | |
2933 | ||
52ce6436 PH |
2934 | static void |
2935 | value_assign_to_component (struct value *container, struct value *component, | |
2936 | struct value *val) | |
2937 | { | |
2938 | LONGEST offset_in_container = | |
42ae5230 | 2939 | (LONGEST) (value_address (component) - value_address (container)); |
7c512744 | 2940 | int bit_offset_in_container = |
52ce6436 PH |
2941 | value_bitpos (component) - value_bitpos (container); |
2942 | int bits; | |
7c512744 | 2943 | |
52ce6436 PH |
2944 | val = value_cast (value_type (component), val); |
2945 | ||
2946 | if (value_bitsize (component) == 0) | |
2947 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2948 | else | |
2949 | bits = value_bitsize (component); | |
2950 | ||
d5a22e77 | 2951 | if (type_byte_order (value_type (container)) == BFD_ENDIAN_BIG) |
2a62dfa9 JB |
2952 | { |
2953 | int src_offset; | |
2954 | ||
2955 | if (is_scalar_type (check_typedef (value_type (component)))) | |
dda83cd7 | 2956 | src_offset |
2a62dfa9 JB |
2957 | = TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits; |
2958 | else | |
2959 | src_offset = 0; | |
50888e42 SM |
2960 | copy_bitwise ((value_contents_writeable (container).data () |
2961 | + offset_in_container), | |
a99bc3d2 | 2962 | value_bitpos (container) + bit_offset_in_container, |
50888e42 | 2963 | value_contents (val).data (), src_offset, bits, 1); |
2a62dfa9 | 2964 | } |
52ce6436 | 2965 | else |
50888e42 SM |
2966 | copy_bitwise ((value_contents_writeable (container).data () |
2967 | + offset_in_container), | |
a99bc3d2 | 2968 | value_bitpos (container) + bit_offset_in_container, |
50888e42 | 2969 | value_contents (val).data (), 0, bits, 0); |
7c512744 JB |
2970 | } |
2971 | ||
736ade86 XR |
2972 | /* Determine if TYPE is an access to an unconstrained array. */ |
2973 | ||
d91e9ea8 | 2974 | bool |
736ade86 XR |
2975 | ada_is_access_to_unconstrained_array (struct type *type) |
2976 | { | |
78134374 | 2977 | return (type->code () == TYPE_CODE_TYPEDEF |
736ade86 XR |
2978 | && is_thick_pntr (ada_typedef_target_type (type))); |
2979 | } | |
2980 | ||
4c4b4cd2 PH |
2981 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2982 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2983 | thereto. */ |
2984 | ||
d2e4a39e AS |
2985 | struct value * |
2986 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2987 | { |
2988 | int k; | |
d2e4a39e AS |
2989 | struct value *elt; |
2990 | struct type *elt_type; | |
14f9c5c9 AS |
2991 | |
2992 | elt = ada_coerce_to_simple_array (arr); | |
2993 | ||
df407dfe | 2994 | elt_type = ada_check_typedef (value_type (elt)); |
78134374 | 2995 | if (elt_type->code () == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2996 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2997 | return value_subscript_packed (elt, arity, ind); | |
2998 | ||
2999 | for (k = 0; k < arity; k += 1) | |
3000 | { | |
b9c50e9a XR |
3001 | struct type *saved_elt_type = TYPE_TARGET_TYPE (elt_type); |
3002 | ||
78134374 | 3003 | if (elt_type->code () != TYPE_CODE_ARRAY) |
dda83cd7 | 3004 | error (_("too many subscripts (%d expected)"), k); |
b9c50e9a | 3005 | |
2497b498 | 3006 | elt = value_subscript (elt, pos_atr (ind[k])); |
b9c50e9a XR |
3007 | |
3008 | if (ada_is_access_to_unconstrained_array (saved_elt_type) | |
78134374 | 3009 | && value_type (elt)->code () != TYPE_CODE_TYPEDEF) |
b9c50e9a XR |
3010 | { |
3011 | /* The element is a typedef to an unconstrained array, | |
3012 | except that the value_subscript call stripped the | |
3013 | typedef layer. The typedef layer is GNAT's way to | |
3014 | specify that the element is, at the source level, an | |
3015 | access to the unconstrained array, rather than the | |
3016 | unconstrained array. So, we need to restore that | |
3017 | typedef layer, which we can do by forcing the element's | |
3018 | type back to its original type. Otherwise, the returned | |
3019 | value is going to be printed as the array, rather | |
3020 | than as an access. Another symptom of the same issue | |
3021 | would be that an expression trying to dereference the | |
3022 | element would also be improperly rejected. */ | |
3023 | deprecated_set_value_type (elt, saved_elt_type); | |
3024 | } | |
3025 | ||
3026 | elt_type = ada_check_typedef (value_type (elt)); | |
14f9c5c9 | 3027 | } |
b9c50e9a | 3028 | |
14f9c5c9 AS |
3029 | return elt; |
3030 | } | |
3031 | ||
deede10c JB |
3032 | /* Assuming ARR is a pointer to a GDB array, the value of the element |
3033 | of *ARR at the ARITY indices given in IND. | |
919e6dbe PMR |
3034 | Does not read the entire array into memory. |
3035 | ||
3036 | Note: Unlike what one would expect, this function is used instead of | |
3037 | ada_value_subscript for basically all non-packed array types. The reason | |
3038 | for this is that a side effect of doing our own pointer arithmetics instead | |
3039 | of relying on value_subscript is that there is no implicit typedef peeling. | |
3040 | This is important for arrays of array accesses, where it allows us to | |
3041 | preserve the fact that the array's element is an array access, where the | |
3042 | access part os encoded in a typedef layer. */ | |
14f9c5c9 | 3043 | |
2c0b251b | 3044 | static struct value * |
deede10c | 3045 | ada_value_ptr_subscript (struct value *arr, int arity, struct value **ind) |
14f9c5c9 AS |
3046 | { |
3047 | int k; | |
919e6dbe | 3048 | struct value *array_ind = ada_value_ind (arr); |
deede10c | 3049 | struct type *type |
919e6dbe PMR |
3050 | = check_typedef (value_enclosing_type (array_ind)); |
3051 | ||
78134374 | 3052 | if (type->code () == TYPE_CODE_ARRAY |
919e6dbe PMR |
3053 | && TYPE_FIELD_BITSIZE (type, 0) > 0) |
3054 | return value_subscript_packed (array_ind, arity, ind); | |
14f9c5c9 AS |
3055 | |
3056 | for (k = 0; k < arity; k += 1) | |
3057 | { | |
3058 | LONGEST lwb, upb; | |
14f9c5c9 | 3059 | |
78134374 | 3060 | if (type->code () != TYPE_CODE_ARRAY) |
dda83cd7 | 3061 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 3062 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
dda83cd7 | 3063 | value_copy (arr)); |
3d967001 | 3064 | get_discrete_bounds (type->index_type (), &lwb, &upb); |
53a47a3e | 3065 | arr = value_ptradd (arr, pos_atr (ind[k]) - lwb); |
14f9c5c9 AS |
3066 | type = TYPE_TARGET_TYPE (type); |
3067 | } | |
3068 | ||
3069 | return value_ind (arr); | |
3070 | } | |
3071 | ||
0b5d8877 | 3072 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
aa715135 JG |
3073 | actual type of ARRAY_PTR is ignored), returns the Ada slice of |
3074 | HIGH'Pos-LOW'Pos+1 elements starting at index LOW. The lower bound of | |
3075 | this array is LOW, as per Ada rules. */ | |
0b5d8877 | 3076 | static struct value * |
f5938064 | 3077 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
dda83cd7 | 3078 | int low, int high) |
0b5d8877 | 3079 | { |
b0dd7688 | 3080 | struct type *type0 = ada_check_typedef (type); |
3d967001 | 3081 | struct type *base_index_type = TYPE_TARGET_TYPE (type0->index_type ()); |
0c9c3474 | 3082 | struct type *index_type |
aa715135 | 3083 | = create_static_range_type (NULL, base_index_type, low, high); |
9fe561ab JB |
3084 | struct type *slice_type = create_array_type_with_stride |
3085 | (NULL, TYPE_TARGET_TYPE (type0), index_type, | |
24e99c6c | 3086 | type0->dyn_prop (DYN_PROP_BYTE_STRIDE), |
9fe561ab | 3087 | TYPE_FIELD_BITSIZE (type0, 0)); |
3d967001 | 3088 | int base_low = ada_discrete_type_low_bound (type0->index_type ()); |
6244c119 | 3089 | gdb::optional<LONGEST> base_low_pos, low_pos; |
aa715135 JG |
3090 | CORE_ADDR base; |
3091 | ||
6244c119 SM |
3092 | low_pos = discrete_position (base_index_type, low); |
3093 | base_low_pos = discrete_position (base_index_type, base_low); | |
3094 | ||
3095 | if (!low_pos.has_value () || !base_low_pos.has_value ()) | |
aa715135 JG |
3096 | { |
3097 | warning (_("unable to get positions in slice, use bounds instead")); | |
3098 | low_pos = low; | |
3099 | base_low_pos = base_low; | |
3100 | } | |
5b4ee69b | 3101 | |
7ff5b937 TT |
3102 | ULONGEST stride = TYPE_FIELD_BITSIZE (slice_type, 0) / 8; |
3103 | if (stride == 0) | |
3104 | stride = TYPE_LENGTH (TYPE_TARGET_TYPE (type0)); | |
3105 | ||
6244c119 | 3106 | base = value_as_address (array_ptr) + (*low_pos - *base_low_pos) * stride; |
f5938064 | 3107 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
3108 | } |
3109 | ||
3110 | ||
3111 | static struct value * | |
3112 | ada_value_slice (struct value *array, int low, int high) | |
3113 | { | |
b0dd7688 | 3114 | struct type *type = ada_check_typedef (value_type (array)); |
3d967001 | 3115 | struct type *base_index_type = TYPE_TARGET_TYPE (type->index_type ()); |
0c9c3474 | 3116 | struct type *index_type |
3d967001 | 3117 | = create_static_range_type (NULL, type->index_type (), low, high); |
9fe561ab JB |
3118 | struct type *slice_type = create_array_type_with_stride |
3119 | (NULL, TYPE_TARGET_TYPE (type), index_type, | |
24e99c6c | 3120 | type->dyn_prop (DYN_PROP_BYTE_STRIDE), |
9fe561ab | 3121 | TYPE_FIELD_BITSIZE (type, 0)); |
6244c119 SM |
3122 | gdb::optional<LONGEST> low_pos, high_pos; |
3123 | ||
5b4ee69b | 3124 | |
6244c119 SM |
3125 | low_pos = discrete_position (base_index_type, low); |
3126 | high_pos = discrete_position (base_index_type, high); | |
3127 | ||
3128 | if (!low_pos.has_value () || !high_pos.has_value ()) | |
aa715135 JG |
3129 | { |
3130 | warning (_("unable to get positions in slice, use bounds instead")); | |
3131 | low_pos = low; | |
3132 | high_pos = high; | |
3133 | } | |
3134 | ||
3135 | return value_cast (slice_type, | |
6244c119 | 3136 | value_slice (array, low, *high_pos - *low_pos + 1)); |
0b5d8877 PH |
3137 | } |
3138 | ||
14f9c5c9 AS |
3139 | /* If type is a record type in the form of a standard GNAT array |
3140 | descriptor, returns the number of dimensions for type. If arr is a | |
3141 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 3142 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
3143 | |
3144 | int | |
d2e4a39e | 3145 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
3146 | { |
3147 | int arity; | |
3148 | ||
3149 | if (type == NULL) | |
3150 | return 0; | |
3151 | ||
3152 | type = desc_base_type (type); | |
3153 | ||
3154 | arity = 0; | |
78134374 | 3155 | if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 | 3156 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e | 3157 | else |
78134374 | 3158 | while (type->code () == TYPE_CODE_ARRAY) |
14f9c5c9 | 3159 | { |
dda83cd7 SM |
3160 | arity += 1; |
3161 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
14f9c5c9 | 3162 | } |
d2e4a39e | 3163 | |
14f9c5c9 AS |
3164 | return arity; |
3165 | } | |
3166 | ||
3167 | /* If TYPE is a record type in the form of a standard GNAT array | |
3168 | descriptor or a simple array type, returns the element type for | |
3169 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 3170 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 3171 | |
d2e4a39e AS |
3172 | struct type * |
3173 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
3174 | { |
3175 | type = desc_base_type (type); | |
3176 | ||
78134374 | 3177 | if (type->code () == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
3178 | { |
3179 | int k; | |
d2e4a39e | 3180 | struct type *p_array_type; |
14f9c5c9 | 3181 | |
556bdfd4 | 3182 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
3183 | |
3184 | k = ada_array_arity (type); | |
3185 | if (k == 0) | |
dda83cd7 | 3186 | return NULL; |
d2e4a39e | 3187 | |
4c4b4cd2 | 3188 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 3189 | if (nindices >= 0 && k > nindices) |
dda83cd7 | 3190 | k = nindices; |
d2e4a39e | 3191 | while (k > 0 && p_array_type != NULL) |
dda83cd7 SM |
3192 | { |
3193 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); | |
3194 | k -= 1; | |
3195 | } | |
14f9c5c9 AS |
3196 | return p_array_type; |
3197 | } | |
78134374 | 3198 | else if (type->code () == TYPE_CODE_ARRAY) |
14f9c5c9 | 3199 | { |
78134374 | 3200 | while (nindices != 0 && type->code () == TYPE_CODE_ARRAY) |
dda83cd7 SM |
3201 | { |
3202 | type = TYPE_TARGET_TYPE (type); | |
3203 | nindices -= 1; | |
3204 | } | |
14f9c5c9 AS |
3205 | return type; |
3206 | } | |
3207 | ||
3208 | return NULL; | |
3209 | } | |
3210 | ||
08a057e6 | 3211 | /* See ada-lang.h. */ |
14f9c5c9 | 3212 | |
08a057e6 | 3213 | struct type * |
1eea4ebd | 3214 | ada_index_type (struct type *type, int n, const char *name) |
14f9c5c9 | 3215 | { |
4c4b4cd2 PH |
3216 | struct type *result_type; |
3217 | ||
14f9c5c9 AS |
3218 | type = desc_base_type (type); |
3219 | ||
1eea4ebd UW |
3220 | if (n < 0 || n > ada_array_arity (type)) |
3221 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 3222 | |
4c4b4cd2 | 3223 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
3224 | { |
3225 | int i; | |
3226 | ||
3227 | for (i = 1; i < n; i += 1) | |
2869ac4b TT |
3228 | { |
3229 | type = ada_check_typedef (type); | |
3230 | type = TYPE_TARGET_TYPE (type); | |
3231 | } | |
3232 | result_type = TYPE_TARGET_TYPE (ada_check_typedef (type)->index_type ()); | |
4c4b4cd2 | 3233 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
dda83cd7 SM |
3234 | has a target type of TYPE_CODE_UNDEF. We compensate here, but |
3235 | perhaps stabsread.c would make more sense. */ | |
78134374 | 3236 | if (result_type && result_type->code () == TYPE_CODE_UNDEF) |
dda83cd7 | 3237 | result_type = NULL; |
14f9c5c9 | 3238 | } |
d2e4a39e | 3239 | else |
1eea4ebd UW |
3240 | { |
3241 | result_type = desc_index_type (desc_bounds_type (type), n); | |
3242 | if (result_type == NULL) | |
3243 | error (_("attempt to take bound of something that is not an array")); | |
3244 | } | |
3245 | ||
3246 | return result_type; | |
14f9c5c9 AS |
3247 | } |
3248 | ||
3249 | /* Given that arr is an array type, returns the lower bound of the | |
3250 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 3251 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
3252 | array-descriptor type. It works for other arrays with bounds supplied |
3253 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 3254 | |
abb68b3e | 3255 | static LONGEST |
fb5e3d5c | 3256 | ada_array_bound_from_type (struct type *arr_type, int n, int which) |
14f9c5c9 | 3257 | { |
8a48ac95 | 3258 | struct type *type, *index_type_desc, *index_type; |
1ce677a4 | 3259 | int i; |
262452ec JK |
3260 | |
3261 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 | 3262 | |
ad82864c JB |
3263 | if (ada_is_constrained_packed_array_type (arr_type)) |
3264 | arr_type = decode_constrained_packed_array_type (arr_type); | |
14f9c5c9 | 3265 | |
4c4b4cd2 | 3266 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3267 | return (LONGEST) - which; |
14f9c5c9 | 3268 | |
78134374 | 3269 | if (arr_type->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
3270 | type = TYPE_TARGET_TYPE (arr_type); |
3271 | else | |
3272 | type = arr_type; | |
3273 | ||
22c4c60c | 3274 | if (type->is_fixed_instance ()) |
bafffb51 JB |
3275 | { |
3276 | /* The array has already been fixed, so we do not need to | |
3277 | check the parallel ___XA type again. That encoding has | |
3278 | already been applied, so ignore it now. */ | |
3279 | index_type_desc = NULL; | |
3280 | } | |
3281 | else | |
3282 | { | |
3283 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
3284 | ada_fixup_array_indexes_type (index_type_desc); | |
3285 | } | |
3286 | ||
262452ec | 3287 | if (index_type_desc != NULL) |
940da03e | 3288 | index_type = to_fixed_range_type (index_type_desc->field (n - 1).type (), |
28c85d6c | 3289 | NULL); |
262452ec | 3290 | else |
8a48ac95 JB |
3291 | { |
3292 | struct type *elt_type = check_typedef (type); | |
3293 | ||
3294 | for (i = 1; i < n; i++) | |
3295 | elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); | |
3296 | ||
3d967001 | 3297 | index_type = elt_type->index_type (); |
8a48ac95 | 3298 | } |
262452ec | 3299 | |
43bbcdc2 PH |
3300 | return |
3301 | (LONGEST) (which == 0 | |
dda83cd7 SM |
3302 | ? ada_discrete_type_low_bound (index_type) |
3303 | : ada_discrete_type_high_bound (index_type)); | |
14f9c5c9 AS |
3304 | } |
3305 | ||
3306 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
3307 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
3308 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 3309 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 3310 | |
1eea4ebd | 3311 | static LONGEST |
4dc81987 | 3312 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 3313 | { |
eb479039 JB |
3314 | struct type *arr_type; |
3315 | ||
78134374 | 3316 | if (check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
eb479039 JB |
3317 | arr = value_ind (arr); |
3318 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3319 | |
ad82864c JB |
3320 | if (ada_is_constrained_packed_array_type (arr_type)) |
3321 | return ada_array_bound (decode_constrained_packed_array (arr), n, which); | |
4c4b4cd2 | 3322 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 3323 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 3324 | else |
1eea4ebd | 3325 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
3326 | } |
3327 | ||
3328 | /* Given that arr is an array value, returns the length of the | |
3329 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
3330 | supplied by run-time quantities other than discriminants. |
3331 | Does not work for arrays indexed by enumeration types with representation | |
3332 | clauses at the moment. */ | |
14f9c5c9 | 3333 | |
1eea4ebd | 3334 | static LONGEST |
d2e4a39e | 3335 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 3336 | { |
aa715135 JG |
3337 | struct type *arr_type, *index_type; |
3338 | int low, high; | |
eb479039 | 3339 | |
78134374 | 3340 | if (check_typedef (value_type (arr))->code () == TYPE_CODE_PTR) |
eb479039 JB |
3341 | arr = value_ind (arr); |
3342 | arr_type = value_enclosing_type (arr); | |
14f9c5c9 | 3343 | |
ad82864c JB |
3344 | if (ada_is_constrained_packed_array_type (arr_type)) |
3345 | return ada_array_length (decode_constrained_packed_array (arr), n); | |
14f9c5c9 | 3346 | |
4c4b4cd2 | 3347 | if (ada_is_simple_array_type (arr_type)) |
aa715135 JG |
3348 | { |
3349 | low = ada_array_bound_from_type (arr_type, n, 0); | |
3350 | high = ada_array_bound_from_type (arr_type, n, 1); | |
3351 | } | |
14f9c5c9 | 3352 | else |
aa715135 JG |
3353 | { |
3354 | low = value_as_long (desc_one_bound (desc_bounds (arr), n, 0)); | |
3355 | high = value_as_long (desc_one_bound (desc_bounds (arr), n, 1)); | |
3356 | } | |
3357 | ||
f168693b | 3358 | arr_type = check_typedef (arr_type); |
7150d33c | 3359 | index_type = ada_index_type (arr_type, n, "length"); |
aa715135 JG |
3360 | if (index_type != NULL) |
3361 | { | |
3362 | struct type *base_type; | |
78134374 | 3363 | if (index_type->code () == TYPE_CODE_RANGE) |
aa715135 JG |
3364 | base_type = TYPE_TARGET_TYPE (index_type); |
3365 | else | |
3366 | base_type = index_type; | |
3367 | ||
3368 | low = pos_atr (value_from_longest (base_type, low)); | |
3369 | high = pos_atr (value_from_longest (base_type, high)); | |
3370 | } | |
3371 | return high - low + 1; | |
4c4b4cd2 PH |
3372 | } |
3373 | ||
bff8c71f TT |
3374 | /* An array whose type is that of ARR_TYPE (an array type), with |
3375 | bounds LOW to HIGH, but whose contents are unimportant. If HIGH is | |
3376 | less than LOW, then LOW-1 is used. */ | |
4c4b4cd2 PH |
3377 | |
3378 | static struct value * | |
bff8c71f | 3379 | empty_array (struct type *arr_type, int low, int high) |
4c4b4cd2 | 3380 | { |
b0dd7688 | 3381 | struct type *arr_type0 = ada_check_typedef (arr_type); |
0c9c3474 SA |
3382 | struct type *index_type |
3383 | = create_static_range_type | |
dda83cd7 | 3384 | (NULL, TYPE_TARGET_TYPE (arr_type0->index_type ()), low, |
bff8c71f | 3385 | high < low ? low - 1 : high); |
b0dd7688 | 3386 | struct type *elt_type = ada_array_element_type (arr_type0, 1); |
5b4ee69b | 3387 | |
0b5d8877 | 3388 | return allocate_value (create_array_type (NULL, elt_type, index_type)); |
14f9c5c9 | 3389 | } |
14f9c5c9 | 3390 | \f |
d2e4a39e | 3391 | |
dda83cd7 | 3392 | /* Name resolution */ |
14f9c5c9 | 3393 | |
4c4b4cd2 PH |
3394 | /* The "decoded" name for the user-definable Ada operator corresponding |
3395 | to OP. */ | |
14f9c5c9 | 3396 | |
d2e4a39e | 3397 | static const char * |
4c4b4cd2 | 3398 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
3399 | { |
3400 | int i; | |
3401 | ||
4c4b4cd2 | 3402 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
3403 | { |
3404 | if (ada_opname_table[i].op == op) | |
dda83cd7 | 3405 | return ada_opname_table[i].decoded; |
14f9c5c9 | 3406 | } |
323e0a4a | 3407 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
3408 | } |
3409 | ||
de93309a SM |
3410 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3411 | in a listing of choices during disambiguation (see sort_choices, below). | |
3412 | The idea is that overloadings of a subprogram name from the | |
3413 | same package should sort in their source order. We settle for ordering | |
3414 | such symbols by their trailing number (__N or $N). */ | |
14f9c5c9 | 3415 | |
de93309a SM |
3416 | static int |
3417 | encoded_ordered_before (const char *N0, const char *N1) | |
14f9c5c9 | 3418 | { |
de93309a SM |
3419 | if (N1 == NULL) |
3420 | return 0; | |
3421 | else if (N0 == NULL) | |
3422 | return 1; | |
3423 | else | |
3424 | { | |
3425 | int k0, k1; | |
30b15541 | 3426 | |
de93309a | 3427 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
dda83cd7 | 3428 | ; |
de93309a | 3429 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
dda83cd7 | 3430 | ; |
de93309a | 3431 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
dda83cd7 SM |
3432 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3433 | { | |
3434 | int n0, n1; | |
3435 | ||
3436 | n0 = k0; | |
3437 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3438 | n0 -= 1; | |
3439 | n1 = k1; | |
3440 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3441 | n1 -= 1; | |
3442 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3443 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3444 | } | |
de93309a SM |
3445 | return (strcmp (N0, N1) < 0); |
3446 | } | |
14f9c5c9 AS |
3447 | } |
3448 | ||
de93309a SM |
3449 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3450 | encoded names. */ | |
14f9c5c9 | 3451 | |
de93309a SM |
3452 | static void |
3453 | sort_choices (struct block_symbol syms[], int nsyms) | |
14f9c5c9 | 3454 | { |
14f9c5c9 | 3455 | int i; |
14f9c5c9 | 3456 | |
de93309a | 3457 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3458 | { |
de93309a SM |
3459 | struct block_symbol sym = syms[i]; |
3460 | int j; | |
3461 | ||
3462 | for (j = i - 1; j >= 0; j -= 1) | |
dda83cd7 SM |
3463 | { |
3464 | if (encoded_ordered_before (syms[j].symbol->linkage_name (), | |
3465 | sym.symbol->linkage_name ())) | |
3466 | break; | |
3467 | syms[j + 1] = syms[j]; | |
3468 | } | |
de93309a SM |
3469 | syms[j + 1] = sym; |
3470 | } | |
3471 | } | |
14f9c5c9 | 3472 | |
de93309a SM |
3473 | /* Whether GDB should display formals and return types for functions in the |
3474 | overloads selection menu. */ | |
3475 | static bool print_signatures = true; | |
4c4b4cd2 | 3476 | |
de93309a SM |
3477 | /* Print the signature for SYM on STREAM according to the FLAGS options. For |
3478 | all but functions, the signature is just the name of the symbol. For | |
3479 | functions, this is the name of the function, the list of types for formals | |
3480 | and the return type (if any). */ | |
4c4b4cd2 | 3481 | |
de93309a SM |
3482 | static void |
3483 | ada_print_symbol_signature (struct ui_file *stream, struct symbol *sym, | |
3484 | const struct type_print_options *flags) | |
3485 | { | |
5f9c5a63 | 3486 | struct type *type = sym->type (); |
14f9c5c9 | 3487 | |
987012b8 | 3488 | fprintf_filtered (stream, "%s", sym->print_name ()); |
de93309a SM |
3489 | if (!print_signatures |
3490 | || type == NULL | |
78134374 | 3491 | || type->code () != TYPE_CODE_FUNC) |
de93309a | 3492 | return; |
4c4b4cd2 | 3493 | |
1f704f76 | 3494 | if (type->num_fields () > 0) |
de93309a SM |
3495 | { |
3496 | int i; | |
14f9c5c9 | 3497 | |
de93309a | 3498 | fprintf_filtered (stream, " ("); |
1f704f76 | 3499 | for (i = 0; i < type->num_fields (); ++i) |
de93309a SM |
3500 | { |
3501 | if (i > 0) | |
3502 | fprintf_filtered (stream, "; "); | |
940da03e | 3503 | ada_print_type (type->field (i).type (), NULL, stream, -1, 0, |
de93309a SM |
3504 | flags); |
3505 | } | |
3506 | fprintf_filtered (stream, ")"); | |
3507 | } | |
3508 | if (TYPE_TARGET_TYPE (type) != NULL | |
78134374 | 3509 | && TYPE_TARGET_TYPE (type)->code () != TYPE_CODE_VOID) |
de93309a SM |
3510 | { |
3511 | fprintf_filtered (stream, " return "); | |
3512 | ada_print_type (TYPE_TARGET_TYPE (type), NULL, stream, -1, 0, flags); | |
3513 | } | |
3514 | } | |
14f9c5c9 | 3515 | |
de93309a SM |
3516 | /* Read and validate a set of numeric choices from the user in the |
3517 | range 0 .. N_CHOICES-1. Place the results in increasing | |
3518 | order in CHOICES[0 .. N-1], and return N. | |
14f9c5c9 | 3519 | |
de93309a SM |
3520 | The user types choices as a sequence of numbers on one line |
3521 | separated by blanks, encoding them as follows: | |
14f9c5c9 | 3522 | |
de93309a SM |
3523 | + A choice of 0 means to cancel the selection, throwing an error. |
3524 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. | |
3525 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
14f9c5c9 | 3526 | |
de93309a | 3527 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 | 3528 | |
de93309a SM |
3529 | ANNOTATION_SUFFIX, if present, is used to annotate the input |
3530 | prompts (for use with the -f switch). */ | |
14f9c5c9 | 3531 | |
de93309a SM |
3532 | static int |
3533 | get_selections (int *choices, int n_choices, int max_results, | |
dda83cd7 | 3534 | int is_all_choice, const char *annotation_suffix) |
de93309a | 3535 | { |
992a7040 | 3536 | const char *args; |
de93309a SM |
3537 | const char *prompt; |
3538 | int n_chosen; | |
3539 | int first_choice = is_all_choice ? 2 : 1; | |
14f9c5c9 | 3540 | |
de93309a SM |
3541 | prompt = getenv ("PS2"); |
3542 | if (prompt == NULL) | |
3543 | prompt = "> "; | |
4c4b4cd2 | 3544 | |
de93309a | 3545 | args = command_line_input (prompt, annotation_suffix); |
4c4b4cd2 | 3546 | |
de93309a SM |
3547 | if (args == NULL) |
3548 | error_no_arg (_("one or more choice numbers")); | |
14f9c5c9 | 3549 | |
de93309a | 3550 | n_chosen = 0; |
4c4b4cd2 | 3551 | |
de93309a SM |
3552 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3553 | order, as given in args. Choices are validated. */ | |
3554 | while (1) | |
14f9c5c9 | 3555 | { |
de93309a SM |
3556 | char *args2; |
3557 | int choice, j; | |
76a01679 | 3558 | |
de93309a SM |
3559 | args = skip_spaces (args); |
3560 | if (*args == '\0' && n_chosen == 0) | |
dda83cd7 | 3561 | error_no_arg (_("one or more choice numbers")); |
de93309a | 3562 | else if (*args == '\0') |
dda83cd7 | 3563 | break; |
76a01679 | 3564 | |
de93309a SM |
3565 | choice = strtol (args, &args2, 10); |
3566 | if (args == args2 || choice < 0 | |
dda83cd7 SM |
3567 | || choice > n_choices + first_choice - 1) |
3568 | error (_("Argument must be choice number")); | |
de93309a | 3569 | args = args2; |
76a01679 | 3570 | |
de93309a | 3571 | if (choice == 0) |
dda83cd7 | 3572 | error (_("cancelled")); |
76a01679 | 3573 | |
de93309a | 3574 | if (choice < first_choice) |
dda83cd7 SM |
3575 | { |
3576 | n_chosen = n_choices; | |
3577 | for (j = 0; j < n_choices; j += 1) | |
3578 | choices[j] = j; | |
3579 | break; | |
3580 | } | |
de93309a | 3581 | choice -= first_choice; |
76a01679 | 3582 | |
de93309a | 3583 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
dda83cd7 SM |
3584 | { |
3585 | } | |
4c4b4cd2 | 3586 | |
de93309a | 3587 | if (j < 0 || choice != choices[j]) |
dda83cd7 SM |
3588 | { |
3589 | int k; | |
4c4b4cd2 | 3590 | |
dda83cd7 SM |
3591 | for (k = n_chosen - 1; k > j; k -= 1) |
3592 | choices[k + 1] = choices[k]; | |
3593 | choices[j + 1] = choice; | |
3594 | n_chosen += 1; | |
3595 | } | |
14f9c5c9 AS |
3596 | } |
3597 | ||
de93309a SM |
3598 | if (n_chosen > max_results) |
3599 | error (_("Select no more than %d of the above"), max_results); | |
3600 | ||
3601 | return n_chosen; | |
14f9c5c9 AS |
3602 | } |
3603 | ||
de93309a SM |
3604 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3605 | by asking the user (if necessary), returning the number selected, | |
3606 | and setting the first elements of SYMS items. Error if no symbols | |
3607 | selected. */ | |
3608 | ||
3609 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
3610 | to be re-integrated one of these days. */ | |
14f9c5c9 AS |
3611 | |
3612 | static int | |
de93309a | 3613 | user_select_syms (struct block_symbol *syms, int nsyms, int max_results) |
14f9c5c9 | 3614 | { |
de93309a SM |
3615 | int i; |
3616 | int *chosen = XALLOCAVEC (int , nsyms); | |
3617 | int n_chosen; | |
3618 | int first_choice = (max_results == 1) ? 1 : 2; | |
3619 | const char *select_mode = multiple_symbols_select_mode (); | |
14f9c5c9 | 3620 | |
de93309a SM |
3621 | if (max_results < 1) |
3622 | error (_("Request to select 0 symbols!")); | |
3623 | if (nsyms <= 1) | |
3624 | return nsyms; | |
14f9c5c9 | 3625 | |
de93309a SM |
3626 | if (select_mode == multiple_symbols_cancel) |
3627 | error (_("\ | |
3628 | canceled because the command is ambiguous\n\ | |
3629 | See set/show multiple-symbol.")); | |
14f9c5c9 | 3630 | |
de93309a SM |
3631 | /* If select_mode is "all", then return all possible symbols. |
3632 | Only do that if more than one symbol can be selected, of course. | |
3633 | Otherwise, display the menu as usual. */ | |
3634 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3635 | return nsyms; | |
14f9c5c9 | 3636 | |
de93309a SM |
3637 | printf_filtered (_("[0] cancel\n")); |
3638 | if (max_results > 1) | |
3639 | printf_filtered (_("[1] all\n")); | |
14f9c5c9 | 3640 | |
de93309a | 3641 | sort_choices (syms, nsyms); |
14f9c5c9 | 3642 | |
de93309a SM |
3643 | for (i = 0; i < nsyms; i += 1) |
3644 | { | |
3645 | if (syms[i].symbol == NULL) | |
dda83cd7 | 3646 | continue; |
14f9c5c9 | 3647 | |
66d7f48f | 3648 | if (syms[i].symbol->aclass () == LOC_BLOCK) |
dda83cd7 SM |
3649 | { |
3650 | struct symtab_and_line sal = | |
3651 | find_function_start_sal (syms[i].symbol, 1); | |
14f9c5c9 | 3652 | |
de93309a SM |
3653 | printf_filtered ("[%d] ", i + first_choice); |
3654 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3655 | &type_print_raw_options); | |
3656 | if (sal.symtab == NULL) | |
3657 | printf_filtered (_(" at %p[<no source file available>%p]:%d\n"), | |
3658 | metadata_style.style ().ptr (), nullptr, sal.line); | |
3659 | else | |
3660 | printf_filtered | |
3661 | (_(" at %ps:%d\n"), | |
3662 | styled_string (file_name_style.style (), | |
3663 | symtab_to_filename_for_display (sal.symtab)), | |
3664 | sal.line); | |
dda83cd7 SM |
3665 | continue; |
3666 | } | |
76a01679 | 3667 | else |
dda83cd7 SM |
3668 | { |
3669 | int is_enumeral = | |
66d7f48f | 3670 | (syms[i].symbol->aclass () == LOC_CONST |
5f9c5a63 SM |
3671 | && syms[i].symbol->type () != NULL |
3672 | && syms[i].symbol->type ()->code () == TYPE_CODE_ENUM); | |
de93309a | 3673 | struct symtab *symtab = NULL; |
4c4b4cd2 | 3674 | |
7b3ecc75 | 3675 | if (syms[i].symbol->is_objfile_owned ()) |
de93309a SM |
3676 | symtab = symbol_symtab (syms[i].symbol); |
3677 | ||
5d0027b9 | 3678 | if (syms[i].symbol->line () != 0 && symtab != NULL) |
de93309a SM |
3679 | { |
3680 | printf_filtered ("[%d] ", i + first_choice); | |
3681 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3682 | &type_print_raw_options); | |
3683 | printf_filtered (_(" at %s:%d\n"), | |
3684 | symtab_to_filename_for_display (symtab), | |
5d0027b9 | 3685 | syms[i].symbol->line ()); |
de93309a | 3686 | } |
dda83cd7 | 3687 | else if (is_enumeral |
5f9c5a63 | 3688 | && syms[i].symbol->type ()->name () != NULL) |
dda83cd7 SM |
3689 | { |
3690 | printf_filtered (("[%d] "), i + first_choice); | |
5f9c5a63 | 3691 | ada_print_type (syms[i].symbol->type (), NULL, |
dda83cd7 SM |
3692 | gdb_stdout, -1, 0, &type_print_raw_options); |
3693 | printf_filtered (_("'(%s) (enumeral)\n"), | |
987012b8 | 3694 | syms[i].symbol->print_name ()); |
dda83cd7 | 3695 | } |
de93309a SM |
3696 | else |
3697 | { | |
3698 | printf_filtered ("[%d] ", i + first_choice); | |
3699 | ada_print_symbol_signature (gdb_stdout, syms[i].symbol, | |
3700 | &type_print_raw_options); | |
3701 | ||
3702 | if (symtab != NULL) | |
3703 | printf_filtered (is_enumeral | |
3704 | ? _(" in %s (enumeral)\n") | |
3705 | : _(" at %s:?\n"), | |
3706 | symtab_to_filename_for_display (symtab)); | |
3707 | else | |
3708 | printf_filtered (is_enumeral | |
3709 | ? _(" (enumeral)\n") | |
3710 | : _(" at ?\n")); | |
3711 | } | |
dda83cd7 | 3712 | } |
14f9c5c9 | 3713 | } |
14f9c5c9 | 3714 | |
de93309a | 3715 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
dda83cd7 | 3716 | "overload-choice"); |
14f9c5c9 | 3717 | |
de93309a SM |
3718 | for (i = 0; i < n_chosen; i += 1) |
3719 | syms[i] = syms[chosen[i]]; | |
14f9c5c9 | 3720 | |
de93309a SM |
3721 | return n_chosen; |
3722 | } | |
14f9c5c9 | 3723 | |
cd9a3148 TT |
3724 | /* See ada-lang.h. */ |
3725 | ||
3726 | block_symbol | |
7056f312 | 3727 | ada_find_operator_symbol (enum exp_opcode op, bool parse_completion, |
cd9a3148 TT |
3728 | int nargs, value *argvec[]) |
3729 | { | |
3730 | if (possible_user_operator_p (op, argvec)) | |
3731 | { | |
3732 | std::vector<struct block_symbol> candidates | |
3733 | = ada_lookup_symbol_list (ada_decoded_op_name (op), | |
3734 | NULL, VAR_DOMAIN); | |
3735 | ||
3736 | int i = ada_resolve_function (candidates, argvec, | |
3737 | nargs, ada_decoded_op_name (op), NULL, | |
3738 | parse_completion); | |
3739 | if (i >= 0) | |
3740 | return candidates[i]; | |
3741 | } | |
3742 | return {}; | |
3743 | } | |
3744 | ||
3745 | /* See ada-lang.h. */ | |
3746 | ||
3747 | block_symbol | |
3748 | ada_resolve_funcall (struct symbol *sym, const struct block *block, | |
3749 | struct type *context_type, | |
7056f312 | 3750 | bool parse_completion, |
cd9a3148 TT |
3751 | int nargs, value *argvec[], |
3752 | innermost_block_tracker *tracker) | |
3753 | { | |
3754 | std::vector<struct block_symbol> candidates | |
3755 | = ada_lookup_symbol_list (sym->linkage_name (), block, VAR_DOMAIN); | |
3756 | ||
3757 | int i; | |
3758 | if (candidates.size () == 1) | |
3759 | i = 0; | |
3760 | else | |
3761 | { | |
3762 | i = ada_resolve_function | |
3763 | (candidates, | |
3764 | argvec, nargs, | |
3765 | sym->linkage_name (), | |
3766 | context_type, parse_completion); | |
3767 | if (i < 0) | |
3768 | error (_("Could not find a match for %s"), sym->print_name ()); | |
3769 | } | |
3770 | ||
3771 | tracker->update (candidates[i]); | |
3772 | return candidates[i]; | |
3773 | } | |
3774 | ||
ba8694b6 TT |
3775 | /* Resolve a mention of a name where the context type is an |
3776 | enumeration type. */ | |
3777 | ||
3778 | static int | |
3779 | ada_resolve_enum (std::vector<struct block_symbol> &syms, | |
3780 | const char *name, struct type *context_type, | |
3781 | bool parse_completion) | |
3782 | { | |
3783 | gdb_assert (context_type->code () == TYPE_CODE_ENUM); | |
3784 | context_type = ada_check_typedef (context_type); | |
3785 | ||
3786 | for (int i = 0; i < syms.size (); ++i) | |
3787 | { | |
3788 | /* We already know the name matches, so we're just looking for | |
3789 | an element of the correct enum type. */ | |
5f9c5a63 | 3790 | if (ada_check_typedef (syms[i].symbol->type ()) == context_type) |
ba8694b6 TT |
3791 | return i; |
3792 | } | |
3793 | ||
3794 | error (_("No name '%s' in enumeration type '%s'"), name, | |
3795 | ada_type_name (context_type)); | |
3796 | } | |
3797 | ||
cd9a3148 TT |
3798 | /* See ada-lang.h. */ |
3799 | ||
3800 | block_symbol | |
3801 | ada_resolve_variable (struct symbol *sym, const struct block *block, | |
3802 | struct type *context_type, | |
7056f312 | 3803 | bool parse_completion, |
cd9a3148 TT |
3804 | int deprocedure_p, |
3805 | innermost_block_tracker *tracker) | |
3806 | { | |
3807 | std::vector<struct block_symbol> candidates | |
3808 | = ada_lookup_symbol_list (sym->linkage_name (), block, VAR_DOMAIN); | |
3809 | ||
3810 | if (std::any_of (candidates.begin (), | |
3811 | candidates.end (), | |
3812 | [] (block_symbol &bsym) | |
3813 | { | |
66d7f48f | 3814 | switch (bsym.symbol->aclass ()) |
cd9a3148 TT |
3815 | { |
3816 | case LOC_REGISTER: | |
3817 | case LOC_ARG: | |
3818 | case LOC_REF_ARG: | |
3819 | case LOC_REGPARM_ADDR: | |
3820 | case LOC_LOCAL: | |
3821 | case LOC_COMPUTED: | |
3822 | return true; | |
3823 | default: | |
3824 | return false; | |
3825 | } | |
3826 | })) | |
3827 | { | |
3828 | /* Types tend to get re-introduced locally, so if there | |
3829 | are any local symbols that are not types, first filter | |
3830 | out all types. */ | |
3831 | candidates.erase | |
3832 | (std::remove_if | |
3833 | (candidates.begin (), | |
3834 | candidates.end (), | |
3835 | [] (block_symbol &bsym) | |
3836 | { | |
66d7f48f | 3837 | return bsym.symbol->aclass () == LOC_TYPEDEF; |
cd9a3148 TT |
3838 | }), |
3839 | candidates.end ()); | |
3840 | } | |
3841 | ||
2c71f639 TV |
3842 | /* Filter out artificial symbols. */ |
3843 | candidates.erase | |
3844 | (std::remove_if | |
3845 | (candidates.begin (), | |
3846 | candidates.end (), | |
3847 | [] (block_symbol &bsym) | |
3848 | { | |
3849 | return bsym.symbol->artificial; | |
3850 | }), | |
3851 | candidates.end ()); | |
3852 | ||
cd9a3148 TT |
3853 | int i; |
3854 | if (candidates.empty ()) | |
3855 | error (_("No definition found for %s"), sym->print_name ()); | |
3856 | else if (candidates.size () == 1) | |
3857 | i = 0; | |
ba8694b6 TT |
3858 | else if (context_type != nullptr |
3859 | && context_type->code () == TYPE_CODE_ENUM) | |
3860 | i = ada_resolve_enum (candidates, sym->linkage_name (), context_type, | |
3861 | parse_completion); | |
cd9a3148 TT |
3862 | else if (deprocedure_p && !is_nonfunction (candidates)) |
3863 | { | |
3864 | i = ada_resolve_function | |
3865 | (candidates, NULL, 0, | |
3866 | sym->linkage_name (), | |
3867 | context_type, parse_completion); | |
3868 | if (i < 0) | |
3869 | error (_("Could not find a match for %s"), sym->print_name ()); | |
3870 | } | |
3871 | else | |
3872 | { | |
3873 | printf_filtered (_("Multiple matches for %s\n"), sym->print_name ()); | |
3874 | user_select_syms (candidates.data (), candidates.size (), 1); | |
3875 | i = 0; | |
3876 | } | |
3877 | ||
3878 | tracker->update (candidates[i]); | |
3879 | return candidates[i]; | |
3880 | } | |
3881 | ||
db2534b7 | 3882 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. */ |
de93309a SM |
3883 | /* The term "match" here is rather loose. The match is heuristic and |
3884 | liberal. */ | |
14f9c5c9 | 3885 | |
de93309a | 3886 | static int |
db2534b7 | 3887 | ada_type_match (struct type *ftype, struct type *atype) |
14f9c5c9 | 3888 | { |
de93309a SM |
3889 | ftype = ada_check_typedef (ftype); |
3890 | atype = ada_check_typedef (atype); | |
14f9c5c9 | 3891 | |
78134374 | 3892 | if (ftype->code () == TYPE_CODE_REF) |
de93309a | 3893 | ftype = TYPE_TARGET_TYPE (ftype); |
78134374 | 3894 | if (atype->code () == TYPE_CODE_REF) |
de93309a | 3895 | atype = TYPE_TARGET_TYPE (atype); |
14f9c5c9 | 3896 | |
78134374 | 3897 | switch (ftype->code ()) |
14f9c5c9 | 3898 | { |
de93309a | 3899 | default: |
78134374 | 3900 | return ftype->code () == atype->code (); |
de93309a | 3901 | case TYPE_CODE_PTR: |
db2534b7 TT |
3902 | if (atype->code () != TYPE_CODE_PTR) |
3903 | return 0; | |
3904 | atype = TYPE_TARGET_TYPE (atype); | |
3905 | /* This can only happen if the actual argument is 'null'. */ | |
3906 | if (atype->code () == TYPE_CODE_INT && TYPE_LENGTH (atype) == 0) | |
3907 | return 1; | |
3908 | return ada_type_match (TYPE_TARGET_TYPE (ftype), atype); | |
de93309a SM |
3909 | case TYPE_CODE_INT: |
3910 | case TYPE_CODE_ENUM: | |
3911 | case TYPE_CODE_RANGE: | |
78134374 | 3912 | switch (atype->code ()) |
dda83cd7 SM |
3913 | { |
3914 | case TYPE_CODE_INT: | |
3915 | case TYPE_CODE_ENUM: | |
3916 | case TYPE_CODE_RANGE: | |
3917 | return 1; | |
3918 | default: | |
3919 | return 0; | |
3920 | } | |
d2e4a39e | 3921 | |
de93309a | 3922 | case TYPE_CODE_ARRAY: |
78134374 | 3923 | return (atype->code () == TYPE_CODE_ARRAY |
dda83cd7 | 3924 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 | 3925 | |
de93309a SM |
3926 | case TYPE_CODE_STRUCT: |
3927 | if (ada_is_array_descriptor_type (ftype)) | |
dda83cd7 SM |
3928 | return (atype->code () == TYPE_CODE_ARRAY |
3929 | || ada_is_array_descriptor_type (atype)); | |
de93309a | 3930 | else |
dda83cd7 SM |
3931 | return (atype->code () == TYPE_CODE_STRUCT |
3932 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3933 | |
de93309a SM |
3934 | case TYPE_CODE_UNION: |
3935 | case TYPE_CODE_FLT: | |
78134374 | 3936 | return (atype->code () == ftype->code ()); |
de93309a | 3937 | } |
14f9c5c9 AS |
3938 | } |
3939 | ||
de93309a SM |
3940 | /* Return non-zero if the formals of FUNC "sufficiently match" the |
3941 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3942 | may also be an enumeral, in which case it is treated as a 0- | |
3943 | argument function. */ | |
14f9c5c9 | 3944 | |
de93309a SM |
3945 | static int |
3946 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) | |
3947 | { | |
3948 | int i; | |
5f9c5a63 | 3949 | struct type *func_type = func->type (); |
14f9c5c9 | 3950 | |
66d7f48f | 3951 | if (func->aclass () == LOC_CONST |
78134374 | 3952 | && func_type->code () == TYPE_CODE_ENUM) |
de93309a | 3953 | return (n_actuals == 0); |
78134374 | 3954 | else if (func_type == NULL || func_type->code () != TYPE_CODE_FUNC) |
de93309a | 3955 | return 0; |
14f9c5c9 | 3956 | |
1f704f76 | 3957 | if (func_type->num_fields () != n_actuals) |
de93309a | 3958 | return 0; |
14f9c5c9 | 3959 | |
de93309a SM |
3960 | for (i = 0; i < n_actuals; i += 1) |
3961 | { | |
3962 | if (actuals[i] == NULL) | |
dda83cd7 | 3963 | return 0; |
de93309a | 3964 | else |
dda83cd7 SM |
3965 | { |
3966 | struct type *ftype = ada_check_typedef (func_type->field (i).type ()); | |
3967 | struct type *atype = ada_check_typedef (value_type (actuals[i])); | |
14f9c5c9 | 3968 | |
db2534b7 | 3969 | if (!ada_type_match (ftype, atype)) |
dda83cd7 SM |
3970 | return 0; |
3971 | } | |
de93309a SM |
3972 | } |
3973 | return 1; | |
3974 | } | |
d2e4a39e | 3975 | |
de93309a SM |
3976 | /* False iff function type FUNC_TYPE definitely does not produce a value |
3977 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3978 | FUNC_TYPE is not a valid function type with a non-null return type | |
3979 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
14f9c5c9 | 3980 | |
de93309a SM |
3981 | static int |
3982 | return_match (struct type *func_type, struct type *context_type) | |
3983 | { | |
3984 | struct type *return_type; | |
d2e4a39e | 3985 | |
de93309a SM |
3986 | if (func_type == NULL) |
3987 | return 1; | |
14f9c5c9 | 3988 | |
78134374 | 3989 | if (func_type->code () == TYPE_CODE_FUNC) |
de93309a SM |
3990 | return_type = get_base_type (TYPE_TARGET_TYPE (func_type)); |
3991 | else | |
3992 | return_type = get_base_type (func_type); | |
3993 | if (return_type == NULL) | |
3994 | return 1; | |
76a01679 | 3995 | |
de93309a | 3996 | context_type = get_base_type (context_type); |
14f9c5c9 | 3997 | |
78134374 | 3998 | if (return_type->code () == TYPE_CODE_ENUM) |
de93309a SM |
3999 | return context_type == NULL || return_type == context_type; |
4000 | else if (context_type == NULL) | |
78134374 | 4001 | return return_type->code () != TYPE_CODE_VOID; |
de93309a | 4002 | else |
78134374 | 4003 | return return_type->code () == context_type->code (); |
de93309a | 4004 | } |
14f9c5c9 | 4005 | |
14f9c5c9 | 4006 | |
1bfa81ac | 4007 | /* Returns the index in SYMS that contains the symbol for the |
de93309a SM |
4008 | function (if any) that matches the types of the NARGS arguments in |
4009 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match | |
4010 | that returns that type, then eliminate matches that don't. If | |
4011 | CONTEXT_TYPE is void and there is at least one match that does not | |
4012 | return void, eliminate all matches that do. | |
14f9c5c9 | 4013 | |
de93309a SM |
4014 | Asks the user if there is more than one match remaining. Returns -1 |
4015 | if there is no such symbol or none is selected. NAME is used | |
4016 | solely for messages. May re-arrange and modify SYMS in | |
4017 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 4018 | |
de93309a | 4019 | static int |
d1183b06 TT |
4020 | ada_resolve_function (std::vector<struct block_symbol> &syms, |
4021 | struct value **args, int nargs, | |
dda83cd7 | 4022 | const char *name, struct type *context_type, |
7056f312 | 4023 | bool parse_completion) |
de93309a SM |
4024 | { |
4025 | int fallback; | |
4026 | int k; | |
4027 | int m; /* Number of hits */ | |
14f9c5c9 | 4028 | |
de93309a SM |
4029 | m = 0; |
4030 | /* In the first pass of the loop, we only accept functions matching | |
4031 | context_type. If none are found, we add a second pass of the loop | |
4032 | where every function is accepted. */ | |
4033 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
4034 | { | |
d1183b06 | 4035 | for (k = 0; k < syms.size (); k += 1) |
dda83cd7 | 4036 | { |
5f9c5a63 | 4037 | struct type *type = ada_check_typedef (syms[k].symbol->type ()); |
5b4ee69b | 4038 | |
dda83cd7 SM |
4039 | if (ada_args_match (syms[k].symbol, args, nargs) |
4040 | && (fallback || return_match (type, context_type))) | |
4041 | { | |
4042 | syms[m] = syms[k]; | |
4043 | m += 1; | |
4044 | } | |
4045 | } | |
14f9c5c9 AS |
4046 | } |
4047 | ||
de93309a SM |
4048 | /* If we got multiple matches, ask the user which one to use. Don't do this |
4049 | interactive thing during completion, though, as the purpose of the | |
4050 | completion is providing a list of all possible matches. Prompting the | |
4051 | user to filter it down would be completely unexpected in this case. */ | |
4052 | if (m == 0) | |
4053 | return -1; | |
4054 | else if (m > 1 && !parse_completion) | |
4055 | { | |
4056 | printf_filtered (_("Multiple matches for %s\n"), name); | |
d1183b06 | 4057 | user_select_syms (syms.data (), m, 1); |
de93309a SM |
4058 | return 0; |
4059 | } | |
4060 | return 0; | |
14f9c5c9 AS |
4061 | } |
4062 | ||
14f9c5c9 AS |
4063 | /* Type-class predicates */ |
4064 | ||
4c4b4cd2 PH |
4065 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
4066 | or FLOAT). */ | |
14f9c5c9 AS |
4067 | |
4068 | static int | |
d2e4a39e | 4069 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
4070 | { |
4071 | if (type == NULL) | |
4072 | return 0; | |
d2e4a39e AS |
4073 | else |
4074 | { | |
78134374 | 4075 | switch (type->code ()) |
dda83cd7 SM |
4076 | { |
4077 | case TYPE_CODE_INT: | |
4078 | case TYPE_CODE_FLT: | |
c04da66c | 4079 | case TYPE_CODE_FIXED_POINT: |
dda83cd7 SM |
4080 | return 1; |
4081 | case TYPE_CODE_RANGE: | |
4082 | return (type == TYPE_TARGET_TYPE (type) | |
4083 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
4084 | default: | |
4085 | return 0; | |
4086 | } | |
d2e4a39e | 4087 | } |
14f9c5c9 AS |
4088 | } |
4089 | ||
4c4b4cd2 | 4090 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
4091 | |
4092 | static int | |
d2e4a39e | 4093 | integer_type_p (struct type *type) |
14f9c5c9 AS |
4094 | { |
4095 | if (type == NULL) | |
4096 | return 0; | |
d2e4a39e AS |
4097 | else |
4098 | { | |
78134374 | 4099 | switch (type->code ()) |
dda83cd7 SM |
4100 | { |
4101 | case TYPE_CODE_INT: | |
4102 | return 1; | |
4103 | case TYPE_CODE_RANGE: | |
4104 | return (type == TYPE_TARGET_TYPE (type) | |
4105 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
4106 | default: | |
4107 | return 0; | |
4108 | } | |
d2e4a39e | 4109 | } |
14f9c5c9 AS |
4110 | } |
4111 | ||
4c4b4cd2 | 4112 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
4113 | |
4114 | static int | |
d2e4a39e | 4115 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
4116 | { |
4117 | if (type == NULL) | |
4118 | return 0; | |
d2e4a39e AS |
4119 | else |
4120 | { | |
78134374 | 4121 | switch (type->code ()) |
dda83cd7 SM |
4122 | { |
4123 | case TYPE_CODE_INT: | |
4124 | case TYPE_CODE_RANGE: | |
4125 | case TYPE_CODE_ENUM: | |
4126 | case TYPE_CODE_FLT: | |
c04da66c | 4127 | case TYPE_CODE_FIXED_POINT: |
dda83cd7 SM |
4128 | return 1; |
4129 | default: | |
4130 | return 0; | |
4131 | } | |
d2e4a39e | 4132 | } |
14f9c5c9 AS |
4133 | } |
4134 | ||
4c4b4cd2 | 4135 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
4136 | |
4137 | static int | |
d2e4a39e | 4138 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
4139 | { |
4140 | if (type == NULL) | |
4141 | return 0; | |
d2e4a39e AS |
4142 | else |
4143 | { | |
78134374 | 4144 | switch (type->code ()) |
dda83cd7 SM |
4145 | { |
4146 | case TYPE_CODE_INT: | |
4147 | case TYPE_CODE_RANGE: | |
4148 | case TYPE_CODE_ENUM: | |
4149 | case TYPE_CODE_BOOL: | |
4150 | return 1; | |
4151 | default: | |
4152 | return 0; | |
4153 | } | |
d2e4a39e | 4154 | } |
14f9c5c9 AS |
4155 | } |
4156 | ||
4c4b4cd2 PH |
4157 | /* Returns non-zero if OP with operands in the vector ARGS could be |
4158 | a user-defined function. Errs on the side of pre-defined operators | |
4159 | (i.e., result 0). */ | |
14f9c5c9 AS |
4160 | |
4161 | static int | |
d2e4a39e | 4162 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 4163 | { |
76a01679 | 4164 | struct type *type0 = |
df407dfe | 4165 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 4166 | struct type *type1 = |
df407dfe | 4167 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 4168 | |
4c4b4cd2 PH |
4169 | if (type0 == NULL) |
4170 | return 0; | |
4171 | ||
14f9c5c9 AS |
4172 | switch (op) |
4173 | { | |
4174 | default: | |
4175 | return 0; | |
4176 | ||
4177 | case BINOP_ADD: | |
4178 | case BINOP_SUB: | |
4179 | case BINOP_MUL: | |
4180 | case BINOP_DIV: | |
d2e4a39e | 4181 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
4182 | |
4183 | case BINOP_REM: | |
4184 | case BINOP_MOD: | |
4185 | case BINOP_BITWISE_AND: | |
4186 | case BINOP_BITWISE_IOR: | |
4187 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 4188 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4189 | |
4190 | case BINOP_EQUAL: | |
4191 | case BINOP_NOTEQUAL: | |
4192 | case BINOP_LESS: | |
4193 | case BINOP_GTR: | |
4194 | case BINOP_LEQ: | |
4195 | case BINOP_GEQ: | |
d2e4a39e | 4196 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
4197 | |
4198 | case BINOP_CONCAT: | |
ee90b9ab | 4199 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
4200 | |
4201 | case BINOP_EXP: | |
d2e4a39e | 4202 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
4203 | |
4204 | case UNOP_NEG: | |
4205 | case UNOP_PLUS: | |
4206 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
4207 | case UNOP_ABS: |
4208 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
4209 | |
4210 | } | |
4211 | } | |
4212 | \f | |
dda83cd7 | 4213 | /* Renaming */ |
14f9c5c9 | 4214 | |
aeb5907d JB |
4215 | /* NOTES: |
4216 | ||
4217 | 1. In the following, we assume that a renaming type's name may | |
4218 | have an ___XD suffix. It would be nice if this went away at some | |
4219 | point. | |
4220 | 2. We handle both the (old) purely type-based representation of | |
4221 | renamings and the (new) variable-based encoding. At some point, | |
4222 | it is devoutly to be hoped that the former goes away | |
4223 | (FIXME: hilfinger-2007-07-09). | |
4224 | 3. Subprogram renamings are not implemented, although the XRS | |
4225 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
4226 | ||
4227 | /* If SYM encodes a renaming, | |
4228 | ||
4229 | <renaming> renames <renamed entity>, | |
4230 | ||
4231 | sets *LEN to the length of the renamed entity's name, | |
4232 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
4233 | the string describing the subcomponent selected from the renamed | |
0963b4bd | 4234 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming |
aeb5907d JB |
4235 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR |
4236 | are undefined). Otherwise, returns a value indicating the category | |
4237 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
4238 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
4239 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
4240 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
4241 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
4242 | may be NULL, in which case they are not assigned. | |
4243 | ||
4244 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
4245 | ||
4246 | enum ada_renaming_category | |
4247 | ada_parse_renaming (struct symbol *sym, | |
4248 | const char **renamed_entity, int *len, | |
4249 | const char **renaming_expr) | |
4250 | { | |
4251 | enum ada_renaming_category kind; | |
4252 | const char *info; | |
4253 | const char *suffix; | |
4254 | ||
4255 | if (sym == NULL) | |
4256 | return ADA_NOT_RENAMING; | |
66d7f48f | 4257 | switch (sym->aclass ()) |
14f9c5c9 | 4258 | { |
aeb5907d JB |
4259 | default: |
4260 | return ADA_NOT_RENAMING; | |
aeb5907d JB |
4261 | case LOC_LOCAL: |
4262 | case LOC_STATIC: | |
4263 | case LOC_COMPUTED: | |
4264 | case LOC_OPTIMIZED_OUT: | |
987012b8 | 4265 | info = strstr (sym->linkage_name (), "___XR"); |
aeb5907d JB |
4266 | if (info == NULL) |
4267 | return ADA_NOT_RENAMING; | |
4268 | switch (info[5]) | |
4269 | { | |
4270 | case '_': | |
4271 | kind = ADA_OBJECT_RENAMING; | |
4272 | info += 6; | |
4273 | break; | |
4274 | case 'E': | |
4275 | kind = ADA_EXCEPTION_RENAMING; | |
4276 | info += 7; | |
4277 | break; | |
4278 | case 'P': | |
4279 | kind = ADA_PACKAGE_RENAMING; | |
4280 | info += 7; | |
4281 | break; | |
4282 | case 'S': | |
4283 | kind = ADA_SUBPROGRAM_RENAMING; | |
4284 | info += 7; | |
4285 | break; | |
4286 | default: | |
4287 | return ADA_NOT_RENAMING; | |
4288 | } | |
14f9c5c9 | 4289 | } |
4c4b4cd2 | 4290 | |
de93309a SM |
4291 | if (renamed_entity != NULL) |
4292 | *renamed_entity = info; | |
4293 | suffix = strstr (info, "___XE"); | |
4294 | if (suffix == NULL || suffix == info) | |
4295 | return ADA_NOT_RENAMING; | |
4296 | if (len != NULL) | |
4297 | *len = strlen (info) - strlen (suffix); | |
4298 | suffix += 5; | |
4299 | if (renaming_expr != NULL) | |
4300 | *renaming_expr = suffix; | |
4301 | return kind; | |
4302 | } | |
4303 | ||
4304 | /* Compute the value of the given RENAMING_SYM, which is expected to | |
4305 | be a symbol encoding a renaming expression. BLOCK is the block | |
4306 | used to evaluate the renaming. */ | |
4307 | ||
4308 | static struct value * | |
4309 | ada_read_renaming_var_value (struct symbol *renaming_sym, | |
4310 | const struct block *block) | |
4311 | { | |
4312 | const char *sym_name; | |
4313 | ||
987012b8 | 4314 | sym_name = renaming_sym->linkage_name (); |
de93309a SM |
4315 | expression_up expr = parse_exp_1 (&sym_name, 0, block, 0); |
4316 | return evaluate_expression (expr.get ()); | |
4317 | } | |
4318 | \f | |
4319 | ||
dda83cd7 | 4320 | /* Evaluation: Function Calls */ |
de93309a SM |
4321 | |
4322 | /* Return an lvalue containing the value VAL. This is the identity on | |
4323 | lvalues, and otherwise has the side-effect of allocating memory | |
4324 | in the inferior where a copy of the value contents is copied. */ | |
4325 | ||
4326 | static struct value * | |
4327 | ensure_lval (struct value *val) | |
4328 | { | |
4329 | if (VALUE_LVAL (val) == not_lval | |
4330 | || VALUE_LVAL (val) == lval_internalvar) | |
4331 | { | |
4332 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); | |
4333 | const CORE_ADDR addr = | |
dda83cd7 | 4334 | value_as_long (value_allocate_space_in_inferior (len)); |
de93309a SM |
4335 | |
4336 | VALUE_LVAL (val) = lval_memory; | |
4337 | set_value_address (val, addr); | |
50888e42 | 4338 | write_memory (addr, value_contents (val).data (), len); |
de93309a SM |
4339 | } |
4340 | ||
4341 | return val; | |
4342 | } | |
4343 | ||
4344 | /* Given ARG, a value of type (pointer or reference to a)* | |
4345 | structure/union, extract the component named NAME from the ultimate | |
4346 | target structure/union and return it as a value with its | |
4347 | appropriate type. | |
4348 | ||
4349 | The routine searches for NAME among all members of the structure itself | |
4350 | and (recursively) among all members of any wrapper members | |
4351 | (e.g., '_parent'). | |
4352 | ||
4353 | If NO_ERR, then simply return NULL in case of error, rather than | |
4354 | calling error. */ | |
4355 | ||
4356 | static struct value * | |
4357 | ada_value_struct_elt (struct value *arg, const char *name, int no_err) | |
4358 | { | |
4359 | struct type *t, *t1; | |
4360 | struct value *v; | |
4361 | int check_tag; | |
4362 | ||
4363 | v = NULL; | |
4364 | t1 = t = ada_check_typedef (value_type (arg)); | |
78134374 | 4365 | if (t->code () == TYPE_CODE_REF) |
de93309a SM |
4366 | { |
4367 | t1 = TYPE_TARGET_TYPE (t); | |
4368 | if (t1 == NULL) | |
4369 | goto BadValue; | |
4370 | t1 = ada_check_typedef (t1); | |
78134374 | 4371 | if (t1->code () == TYPE_CODE_PTR) |
dda83cd7 SM |
4372 | { |
4373 | arg = coerce_ref (arg); | |
4374 | t = t1; | |
4375 | } | |
de93309a SM |
4376 | } |
4377 | ||
78134374 | 4378 | while (t->code () == TYPE_CODE_PTR) |
de93309a SM |
4379 | { |
4380 | t1 = TYPE_TARGET_TYPE (t); | |
4381 | if (t1 == NULL) | |
4382 | goto BadValue; | |
4383 | t1 = ada_check_typedef (t1); | |
78134374 | 4384 | if (t1->code () == TYPE_CODE_PTR) |
dda83cd7 SM |
4385 | { |
4386 | arg = value_ind (arg); | |
4387 | t = t1; | |
4388 | } | |
de93309a | 4389 | else |
dda83cd7 | 4390 | break; |
de93309a | 4391 | } |
aeb5907d | 4392 | |
78134374 | 4393 | if (t1->code () != TYPE_CODE_STRUCT && t1->code () != TYPE_CODE_UNION) |
de93309a | 4394 | goto BadValue; |
52ce6436 | 4395 | |
de93309a SM |
4396 | if (t1 == t) |
4397 | v = ada_search_struct_field (name, arg, 0, t); | |
4398 | else | |
4399 | { | |
4400 | int bit_offset, bit_size, byte_offset; | |
4401 | struct type *field_type; | |
4402 | CORE_ADDR address; | |
a5ee536b | 4403 | |
78134374 | 4404 | if (t->code () == TYPE_CODE_PTR) |
de93309a SM |
4405 | address = value_address (ada_value_ind (arg)); |
4406 | else | |
4407 | address = value_address (ada_coerce_ref (arg)); | |
d2e4a39e | 4408 | |
de93309a | 4409 | /* Check to see if this is a tagged type. We also need to handle |
dda83cd7 SM |
4410 | the case where the type is a reference to a tagged type, but |
4411 | we have to be careful to exclude pointers to tagged types. | |
4412 | The latter should be shown as usual (as a pointer), whereas | |
4413 | a reference should mostly be transparent to the user. */ | |
14f9c5c9 | 4414 | |
de93309a | 4415 | if (ada_is_tagged_type (t1, 0) |
dda83cd7 SM |
4416 | || (t1->code () == TYPE_CODE_REF |
4417 | && ada_is_tagged_type (TYPE_TARGET_TYPE (t1), 0))) | |
4418 | { | |
4419 | /* We first try to find the searched field in the current type. | |
de93309a | 4420 | If not found then let's look in the fixed type. */ |
14f9c5c9 | 4421 | |
dda83cd7 | 4422 | if (!find_struct_field (name, t1, 0, |
4d1795ac TT |
4423 | nullptr, nullptr, nullptr, |
4424 | nullptr, nullptr)) | |
de93309a SM |
4425 | check_tag = 1; |
4426 | else | |
4427 | check_tag = 0; | |
dda83cd7 | 4428 | } |
de93309a SM |
4429 | else |
4430 | check_tag = 0; | |
c3e5cd34 | 4431 | |
de93309a SM |
4432 | /* Convert to fixed type in all cases, so that we have proper |
4433 | offsets to each field in unconstrained record types. */ | |
4434 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, | |
4435 | address, NULL, check_tag); | |
4436 | ||
24aa1b02 TT |
4437 | /* Resolve the dynamic type as well. */ |
4438 | arg = value_from_contents_and_address (t1, nullptr, address); | |
4439 | t1 = value_type (arg); | |
4440 | ||
de93309a | 4441 | if (find_struct_field (name, t1, 0, |
dda83cd7 SM |
4442 | &field_type, &byte_offset, &bit_offset, |
4443 | &bit_size, NULL)) | |
4444 | { | |
4445 | if (bit_size != 0) | |
4446 | { | |
4447 | if (t->code () == TYPE_CODE_REF) | |
4448 | arg = ada_coerce_ref (arg); | |
4449 | else | |
4450 | arg = ada_value_ind (arg); | |
4451 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, | |
4452 | bit_offset, bit_size, | |
4453 | field_type); | |
4454 | } | |
4455 | else | |
4456 | v = value_at_lazy (field_type, address + byte_offset); | |
4457 | } | |
c3e5cd34 | 4458 | } |
14f9c5c9 | 4459 | |
de93309a SM |
4460 | if (v != NULL || no_err) |
4461 | return v; | |
4462 | else | |
4463 | error (_("There is no member named %s."), name); | |
4464 | ||
4465 | BadValue: | |
4466 | if (no_err) | |
4467 | return NULL; | |
4468 | else | |
4469 | error (_("Attempt to extract a component of " | |
4470 | "a value that is not a record.")); | |
14f9c5c9 AS |
4471 | } |
4472 | ||
4473 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
4474 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
4475 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 4476 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 4477 | |
a93c0eb6 | 4478 | struct value * |
40bc484c | 4479 | ada_convert_actual (struct value *actual, struct type *formal_type0) |
14f9c5c9 | 4480 | { |
df407dfe | 4481 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 4482 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e | 4483 | struct type *formal_target = |
78134374 | 4484 | formal_type->code () == TYPE_CODE_PTR |
61ee279c | 4485 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e | 4486 | struct type *actual_target = |
78134374 | 4487 | actual_type->code () == TYPE_CODE_PTR |
61ee279c | 4488 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 4489 | |
4c4b4cd2 | 4490 | if (ada_is_array_descriptor_type (formal_target) |
78134374 | 4491 | && actual_target->code () == TYPE_CODE_ARRAY) |
40bc484c | 4492 | return make_array_descriptor (formal_type, actual); |
78134374 SM |
4493 | else if (formal_type->code () == TYPE_CODE_PTR |
4494 | || formal_type->code () == TYPE_CODE_REF) | |
14f9c5c9 | 4495 | { |
a84a8a0d | 4496 | struct value *result; |
5b4ee69b | 4497 | |
78134374 | 4498 | if (formal_target->code () == TYPE_CODE_ARRAY |
dda83cd7 | 4499 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 4500 | result = desc_data (actual); |
78134374 | 4501 | else if (formal_type->code () != TYPE_CODE_PTR) |
dda83cd7 SM |
4502 | { |
4503 | if (VALUE_LVAL (actual) != lval_memory) | |
4504 | { | |
4505 | struct value *val; | |
4506 | ||
4507 | actual_type = ada_check_typedef (value_type (actual)); | |
4508 | val = allocate_value (actual_type); | |
4bce7cda | 4509 | copy (value_contents (actual), value_contents_raw (val)); |
dda83cd7 SM |
4510 | actual = ensure_lval (val); |
4511 | } | |
4512 | result = value_addr (actual); | |
4513 | } | |
a84a8a0d JB |
4514 | else |
4515 | return actual; | |
b1af9e97 | 4516 | return value_cast_pointers (formal_type, result, 0); |
14f9c5c9 | 4517 | } |
78134374 | 4518 | else if (actual_type->code () == TYPE_CODE_PTR) |
14f9c5c9 | 4519 | return ada_value_ind (actual); |
8344af1e JB |
4520 | else if (ada_is_aligner_type (formal_type)) |
4521 | { | |
4522 | /* We need to turn this parameter into an aligner type | |
4523 | as well. */ | |
4524 | struct value *aligner = allocate_value (formal_type); | |
4525 | struct value *component = ada_value_struct_elt (aligner, "F", 0); | |
4526 | ||
4527 | value_assign_to_component (aligner, component, actual); | |
4528 | return aligner; | |
4529 | } | |
14f9c5c9 AS |
4530 | |
4531 | return actual; | |
4532 | } | |
4533 | ||
438c98a1 JB |
4534 | /* Convert VALUE (which must be an address) to a CORE_ADDR that is a pointer of |
4535 | type TYPE. This is usually an inefficient no-op except on some targets | |
4536 | (such as AVR) where the representation of a pointer and an address | |
4537 | differs. */ | |
4538 | ||
4539 | static CORE_ADDR | |
4540 | value_pointer (struct value *value, struct type *type) | |
4541 | { | |
438c98a1 | 4542 | unsigned len = TYPE_LENGTH (type); |
224c3ddb | 4543 | gdb_byte *buf = (gdb_byte *) alloca (len); |
438c98a1 JB |
4544 | CORE_ADDR addr; |
4545 | ||
4546 | addr = value_address (value); | |
8ee511af | 4547 | gdbarch_address_to_pointer (type->arch (), type, buf, addr); |
34877895 | 4548 | addr = extract_unsigned_integer (buf, len, type_byte_order (type)); |
438c98a1 JB |
4549 | return addr; |
4550 | } | |
4551 | ||
14f9c5c9 | 4552 | |
4c4b4cd2 PH |
4553 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
4554 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 4555 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
4556 | to-descriptor type rather than a descriptor type), a struct value * |
4557 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 4558 | |
d2e4a39e | 4559 | static struct value * |
40bc484c | 4560 | make_array_descriptor (struct type *type, struct value *arr) |
14f9c5c9 | 4561 | { |
d2e4a39e AS |
4562 | struct type *bounds_type = desc_bounds_type (type); |
4563 | struct type *desc_type = desc_base_type (type); | |
4564 | struct value *descriptor = allocate_value (desc_type); | |
4565 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 4566 | int i; |
d2e4a39e | 4567 | |
0963b4bd MS |
4568 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); |
4569 | i > 0; i -= 1) | |
14f9c5c9 | 4570 | { |
50888e42 SM |
4571 | modify_field (value_type (bounds), |
4572 | value_contents_writeable (bounds).data (), | |
19f220c3 JK |
4573 | ada_array_bound (arr, i, 0), |
4574 | desc_bound_bitpos (bounds_type, i, 0), | |
4575 | desc_bound_bitsize (bounds_type, i, 0)); | |
50888e42 SM |
4576 | modify_field (value_type (bounds), |
4577 | value_contents_writeable (bounds).data (), | |
19f220c3 JK |
4578 | ada_array_bound (arr, i, 1), |
4579 | desc_bound_bitpos (bounds_type, i, 1), | |
4580 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 4581 | } |
d2e4a39e | 4582 | |
40bc484c | 4583 | bounds = ensure_lval (bounds); |
d2e4a39e | 4584 | |
19f220c3 | 4585 | modify_field (value_type (descriptor), |
50888e42 | 4586 | value_contents_writeable (descriptor).data (), |
19f220c3 | 4587 | value_pointer (ensure_lval (arr), |
940da03e | 4588 | desc_type->field (0).type ()), |
19f220c3 JK |
4589 | fat_pntr_data_bitpos (desc_type), |
4590 | fat_pntr_data_bitsize (desc_type)); | |
4591 | ||
4592 | modify_field (value_type (descriptor), | |
50888e42 | 4593 | value_contents_writeable (descriptor).data (), |
19f220c3 | 4594 | value_pointer (bounds, |
940da03e | 4595 | desc_type->field (1).type ()), |
19f220c3 JK |
4596 | fat_pntr_bounds_bitpos (desc_type), |
4597 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 4598 | |
40bc484c | 4599 | descriptor = ensure_lval (descriptor); |
14f9c5c9 | 4600 | |
78134374 | 4601 | if (type->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
4602 | return value_addr (descriptor); |
4603 | else | |
4604 | return descriptor; | |
4605 | } | |
14f9c5c9 | 4606 | \f |
dda83cd7 | 4607 | /* Symbol Cache Module */ |
3d9434b5 | 4608 | |
3d9434b5 | 4609 | /* Performance measurements made as of 2010-01-15 indicate that |
ee01b665 | 4610 | this cache does bring some noticeable improvements. Depending |
3d9434b5 JB |
4611 | on the type of entity being printed, the cache can make it as much |
4612 | as an order of magnitude faster than without it. | |
4613 | ||
4614 | The descriptive type DWARF extension has significantly reduced | |
4615 | the need for this cache, at least when DWARF is being used. However, | |
4616 | even in this case, some expensive name-based symbol searches are still | |
4617 | sometimes necessary - to find an XVZ variable, mostly. */ | |
4618 | ||
ee01b665 JB |
4619 | /* Return the symbol cache associated to the given program space PSPACE. |
4620 | If not allocated for this PSPACE yet, allocate and initialize one. */ | |
3d9434b5 | 4621 | |
ee01b665 JB |
4622 | static struct ada_symbol_cache * |
4623 | ada_get_symbol_cache (struct program_space *pspace) | |
4624 | { | |
4625 | struct ada_pspace_data *pspace_data = get_ada_pspace_data (pspace); | |
ee01b665 | 4626 | |
bdcccc56 TT |
4627 | if (pspace_data->sym_cache == nullptr) |
4628 | pspace_data->sym_cache.reset (new ada_symbol_cache); | |
ee01b665 | 4629 | |
bdcccc56 | 4630 | return pspace_data->sym_cache.get (); |
ee01b665 | 4631 | } |
3d9434b5 JB |
4632 | |
4633 | /* Clear all entries from the symbol cache. */ | |
4634 | ||
4635 | static void | |
bdcccc56 | 4636 | ada_clear_symbol_cache () |
3d9434b5 | 4637 | { |
bdcccc56 TT |
4638 | struct ada_pspace_data *pspace_data |
4639 | = get_ada_pspace_data (current_program_space); | |
ee01b665 | 4640 | |
bdcccc56 TT |
4641 | if (pspace_data->sym_cache != nullptr) |
4642 | pspace_data->sym_cache.reset (); | |
3d9434b5 JB |
4643 | } |
4644 | ||
fe978cb0 | 4645 | /* Search our cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4646 | Return it if found, or NULL otherwise. */ |
4647 | ||
4648 | static struct cache_entry ** | |
fe978cb0 | 4649 | find_entry (const char *name, domain_enum domain) |
3d9434b5 | 4650 | { |
ee01b665 JB |
4651 | struct ada_symbol_cache *sym_cache |
4652 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 JB |
4653 | int h = msymbol_hash (name) % HASH_SIZE; |
4654 | struct cache_entry **e; | |
4655 | ||
ee01b665 | 4656 | for (e = &sym_cache->root[h]; *e != NULL; e = &(*e)->next) |
3d9434b5 | 4657 | { |
fe978cb0 | 4658 | if (domain == (*e)->domain && strcmp (name, (*e)->name) == 0) |
dda83cd7 | 4659 | return e; |
3d9434b5 JB |
4660 | } |
4661 | return NULL; | |
4662 | } | |
4663 | ||
fe978cb0 | 4664 | /* Search the symbol cache for an entry matching NAME and DOMAIN. |
3d9434b5 JB |
4665 | Return 1 if found, 0 otherwise. |
4666 | ||
4667 | If an entry was found and SYM is not NULL, set *SYM to the entry's | |
4668 | SYM. Same principle for BLOCK if not NULL. */ | |
96d887e8 | 4669 | |
96d887e8 | 4670 | static int |
fe978cb0 | 4671 | lookup_cached_symbol (const char *name, domain_enum domain, |
dda83cd7 | 4672 | struct symbol **sym, const struct block **block) |
96d887e8 | 4673 | { |
fe978cb0 | 4674 | struct cache_entry **e = find_entry (name, domain); |
3d9434b5 JB |
4675 | |
4676 | if (e == NULL) | |
4677 | return 0; | |
4678 | if (sym != NULL) | |
4679 | *sym = (*e)->sym; | |
4680 | if (block != NULL) | |
4681 | *block = (*e)->block; | |
4682 | return 1; | |
96d887e8 PH |
4683 | } |
4684 | ||
3d9434b5 | 4685 | /* Assuming that (SYM, BLOCK) is the result of the lookup of NAME |
fe978cb0 | 4686 | in domain DOMAIN, save this result in our symbol cache. */ |
3d9434b5 | 4687 | |
96d887e8 | 4688 | static void |
fe978cb0 | 4689 | cache_symbol (const char *name, domain_enum domain, struct symbol *sym, |
dda83cd7 | 4690 | const struct block *block) |
96d887e8 | 4691 | { |
ee01b665 JB |
4692 | struct ada_symbol_cache *sym_cache |
4693 | = ada_get_symbol_cache (current_program_space); | |
3d9434b5 | 4694 | int h; |
3d9434b5 JB |
4695 | struct cache_entry *e; |
4696 | ||
1994afbf DE |
4697 | /* Symbols for builtin types don't have a block. |
4698 | For now don't cache such symbols. */ | |
7b3ecc75 | 4699 | if (sym != NULL && !sym->is_objfile_owned ()) |
1994afbf DE |
4700 | return; |
4701 | ||
3d9434b5 JB |
4702 | /* If the symbol is a local symbol, then do not cache it, as a search |
4703 | for that symbol depends on the context. To determine whether | |
4704 | the symbol is local or not, we check the block where we found it | |
4705 | against the global and static blocks of its associated symtab. */ | |
4706 | if (sym | |
012cfab9 | 4707 | && BLOCKVECTOR_BLOCK (symbol_symtab (sym)->blockvector (), |
439247b6 | 4708 | GLOBAL_BLOCK) != block |
012cfab9 | 4709 | && BLOCKVECTOR_BLOCK (symbol_symtab (sym)->blockvector (), |
439247b6 | 4710 | STATIC_BLOCK) != block) |
3d9434b5 JB |
4711 | return; |
4712 | ||
4713 | h = msymbol_hash (name) % HASH_SIZE; | |
e39db4db | 4714 | e = XOBNEW (&sym_cache->cache_space, cache_entry); |
ee01b665 JB |
4715 | e->next = sym_cache->root[h]; |
4716 | sym_cache->root[h] = e; | |
2ef5453b | 4717 | e->name = obstack_strdup (&sym_cache->cache_space, name); |
3d9434b5 | 4718 | e->sym = sym; |
fe978cb0 | 4719 | e->domain = domain; |
3d9434b5 | 4720 | e->block = block; |
96d887e8 | 4721 | } |
4c4b4cd2 | 4722 | \f |
dda83cd7 | 4723 | /* Symbol Lookup */ |
4c4b4cd2 | 4724 | |
b5ec771e PA |
4725 | /* Return the symbol name match type that should be used used when |
4726 | searching for all symbols matching LOOKUP_NAME. | |
c0431670 JB |
4727 | |
4728 | LOOKUP_NAME is expected to be a symbol name after transformation | |
f98b2e33 | 4729 | for Ada lookups. */ |
c0431670 | 4730 | |
b5ec771e PA |
4731 | static symbol_name_match_type |
4732 | name_match_type_from_name (const char *lookup_name) | |
c0431670 | 4733 | { |
b5ec771e PA |
4734 | return (strstr (lookup_name, "__") == NULL |
4735 | ? symbol_name_match_type::WILD | |
4736 | : symbol_name_match_type::FULL); | |
c0431670 JB |
4737 | } |
4738 | ||
4c4b4cd2 PH |
4739 | /* Return the result of a standard (literal, C-like) lookup of NAME in |
4740 | given DOMAIN, visible from lexical block BLOCK. */ | |
4741 | ||
4742 | static struct symbol * | |
4743 | standard_lookup (const char *name, const struct block *block, | |
dda83cd7 | 4744 | domain_enum domain) |
4c4b4cd2 | 4745 | { |
acbd605d | 4746 | /* Initialize it just to avoid a GCC false warning. */ |
6640a367 | 4747 | struct block_symbol sym = {}; |
4c4b4cd2 | 4748 | |
d12307c1 PMR |
4749 | if (lookup_cached_symbol (name, domain, &sym.symbol, NULL)) |
4750 | return sym.symbol; | |
a2cd4f14 | 4751 | ada_lookup_encoded_symbol (name, block, domain, &sym); |
d12307c1 PMR |
4752 | cache_symbol (name, domain, sym.symbol, sym.block); |
4753 | return sym.symbol; | |
4c4b4cd2 PH |
4754 | } |
4755 | ||
4756 | ||
4757 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
1bfa81ac | 4758 | in the symbol fields of SYMS. We treat enumerals as functions, |
4c4b4cd2 PH |
4759 | since they contend in overloading in the same way. */ |
4760 | static int | |
d1183b06 | 4761 | is_nonfunction (const std::vector<struct block_symbol> &syms) |
4c4b4cd2 | 4762 | { |
d1183b06 | 4763 | for (const block_symbol &sym : syms) |
5f9c5a63 SM |
4764 | if (sym.symbol->type ()->code () != TYPE_CODE_FUNC |
4765 | && (sym.symbol->type ()->code () != TYPE_CODE_ENUM | |
66d7f48f | 4766 | || sym.symbol->aclass () != LOC_CONST)) |
14f9c5c9 AS |
4767 | return 1; |
4768 | ||
4769 | return 0; | |
4770 | } | |
4771 | ||
4772 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4773 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4774 | |
4775 | static int | |
d2e4a39e | 4776 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4777 | { |
d2e4a39e | 4778 | if (type0 == type1) |
14f9c5c9 | 4779 | return 1; |
d2e4a39e | 4780 | if (type0 == NULL || type1 == NULL |
78134374 | 4781 | || type0->code () != type1->code ()) |
14f9c5c9 | 4782 | return 0; |
78134374 SM |
4783 | if ((type0->code () == TYPE_CODE_STRUCT |
4784 | || type0->code () == TYPE_CODE_ENUM) | |
14f9c5c9 | 4785 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL |
4c4b4cd2 | 4786 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4787 | return 1; |
d2e4a39e | 4788 | |
14f9c5c9 AS |
4789 | return 0; |
4790 | } | |
4791 | ||
4792 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4793 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4794 | |
4795 | static int | |
d2e4a39e | 4796 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4797 | { |
4798 | if (sym0 == sym1) | |
4799 | return 1; | |
6c9c307c | 4800 | if (sym0->domain () != sym1->domain () |
66d7f48f | 4801 | || sym0->aclass () != sym1->aclass ()) |
14f9c5c9 AS |
4802 | return 0; |
4803 | ||
66d7f48f | 4804 | switch (sym0->aclass ()) |
14f9c5c9 AS |
4805 | { |
4806 | case LOC_UNDEF: | |
4807 | return 1; | |
4808 | case LOC_TYPEDEF: | |
4809 | { | |
5f9c5a63 SM |
4810 | struct type *type0 = sym0->type (); |
4811 | struct type *type1 = sym1->type (); | |
dda83cd7 SM |
4812 | const char *name0 = sym0->linkage_name (); |
4813 | const char *name1 = sym1->linkage_name (); | |
4814 | int len0 = strlen (name0); | |
4815 | ||
4816 | return | |
4817 | type0->code () == type1->code () | |
4818 | && (equiv_types (type0, type1) | |
4819 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4820 | && startswith (name1 + len0, "___XV"))); | |
14f9c5c9 AS |
4821 | } |
4822 | case LOC_CONST: | |
4823 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
5f9c5a63 | 4824 | && equiv_types (sym0->type (), sym1->type ()); |
4b610737 TT |
4825 | |
4826 | case LOC_STATIC: | |
4827 | { | |
dda83cd7 SM |
4828 | const char *name0 = sym0->linkage_name (); |
4829 | const char *name1 = sym1->linkage_name (); | |
4830 | return (strcmp (name0, name1) == 0 | |
4831 | && SYMBOL_VALUE_ADDRESS (sym0) == SYMBOL_VALUE_ADDRESS (sym1)); | |
4b610737 TT |
4832 | } |
4833 | ||
d2e4a39e AS |
4834 | default: |
4835 | return 0; | |
14f9c5c9 AS |
4836 | } |
4837 | } | |
4838 | ||
d1183b06 TT |
4839 | /* Append (SYM,BLOCK) to the end of the array of struct block_symbol |
4840 | records in RESULT. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4841 | |
4842 | static void | |
d1183b06 | 4843 | add_defn_to_vec (std::vector<struct block_symbol> &result, |
dda83cd7 SM |
4844 | struct symbol *sym, |
4845 | const struct block *block) | |
14f9c5c9 | 4846 | { |
529cad9c PH |
4847 | /* Do not try to complete stub types, as the debugger is probably |
4848 | already scanning all symbols matching a certain name at the | |
4849 | time when this function is called. Trying to replace the stub | |
4850 | type by its associated full type will cause us to restart a scan | |
4851 | which may lead to an infinite recursion. Instead, the client | |
4852 | collecting the matching symbols will end up collecting several | |
4853 | matches, with at least one of them complete. It can then filter | |
4854 | out the stub ones if needed. */ | |
4855 | ||
d1183b06 | 4856 | for (int i = result.size () - 1; i >= 0; i -= 1) |
4c4b4cd2 | 4857 | { |
d1183b06 | 4858 | if (lesseq_defined_than (sym, result[i].symbol)) |
dda83cd7 | 4859 | return; |
d1183b06 | 4860 | else if (lesseq_defined_than (result[i].symbol, sym)) |
dda83cd7 | 4861 | { |
d1183b06 TT |
4862 | result[i].symbol = sym; |
4863 | result[i].block = block; | |
dda83cd7 SM |
4864 | return; |
4865 | } | |
4c4b4cd2 PH |
4866 | } |
4867 | ||
d1183b06 TT |
4868 | struct block_symbol info; |
4869 | info.symbol = sym; | |
4870 | info.block = block; | |
4871 | result.push_back (info); | |
4c4b4cd2 PH |
4872 | } |
4873 | ||
7c7b6655 TT |
4874 | /* Return a bound minimal symbol matching NAME according to Ada |
4875 | decoding rules. Returns an invalid symbol if there is no such | |
4876 | minimal symbol. Names prefixed with "standard__" are handled | |
4877 | specially: "standard__" is first stripped off, and only static and | |
4878 | global symbols are searched. */ | |
4c4b4cd2 | 4879 | |
7c7b6655 | 4880 | struct bound_minimal_symbol |
96d887e8 | 4881 | ada_lookup_simple_minsym (const char *name) |
4c4b4cd2 | 4882 | { |
7c7b6655 | 4883 | struct bound_minimal_symbol result; |
4c4b4cd2 | 4884 | |
b5ec771e PA |
4885 | symbol_name_match_type match_type = name_match_type_from_name (name); |
4886 | lookup_name_info lookup_name (name, match_type); | |
4887 | ||
4888 | symbol_name_matcher_ftype *match_name | |
4889 | = ada_get_symbol_name_matcher (lookup_name); | |
4c4b4cd2 | 4890 | |
2030c079 | 4891 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4892 | { |
7932255d | 4893 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf | 4894 | { |
c9d95fa3 | 4895 | if (match_name (msymbol->linkage_name (), lookup_name, NULL) |
5325b9bf TT |
4896 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) |
4897 | { | |
4898 | result.minsym = msymbol; | |
4899 | result.objfile = objfile; | |
4900 | break; | |
4901 | } | |
4902 | } | |
4903 | } | |
4c4b4cd2 | 4904 | |
7c7b6655 | 4905 | return result; |
96d887e8 | 4906 | } |
4c4b4cd2 | 4907 | |
96d887e8 PH |
4908 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4909 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4910 | |
96d887e8 PH |
4911 | static int |
4912 | is_nondebugging_type (struct type *type) | |
4913 | { | |
0d5cff50 | 4914 | const char *name = ada_type_name (type); |
5b4ee69b | 4915 | |
96d887e8 PH |
4916 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); |
4917 | } | |
4c4b4cd2 | 4918 | |
8f17729f JB |
4919 | /* Return nonzero if TYPE1 and TYPE2 are two enumeration types |
4920 | that are deemed "identical" for practical purposes. | |
4921 | ||
4922 | This function assumes that TYPE1 and TYPE2 are both TYPE_CODE_ENUM | |
4923 | types and that their number of enumerals is identical (in other | |
1f704f76 | 4924 | words, type1->num_fields () == type2->num_fields ()). */ |
8f17729f JB |
4925 | |
4926 | static int | |
4927 | ada_identical_enum_types_p (struct type *type1, struct type *type2) | |
4928 | { | |
4929 | int i; | |
4930 | ||
4931 | /* The heuristic we use here is fairly conservative. We consider | |
4932 | that 2 enumerate types are identical if they have the same | |
4933 | number of enumerals and that all enumerals have the same | |
4934 | underlying value and name. */ | |
4935 | ||
4936 | /* All enums in the type should have an identical underlying value. */ | |
1f704f76 | 4937 | for (i = 0; i < type1->num_fields (); i++) |
970db518 | 4938 | if (type1->field (i).loc_enumval () != type2->field (i).loc_enumval ()) |
8f17729f JB |
4939 | return 0; |
4940 | ||
4941 | /* All enumerals should also have the same name (modulo any numerical | |
4942 | suffix). */ | |
1f704f76 | 4943 | for (i = 0; i < type1->num_fields (); i++) |
8f17729f | 4944 | { |
33d16dd9 SM |
4945 | const char *name_1 = type1->field (i).name (); |
4946 | const char *name_2 = type2->field (i).name (); | |
8f17729f JB |
4947 | int len_1 = strlen (name_1); |
4948 | int len_2 = strlen (name_2); | |
4949 | ||
33d16dd9 SM |
4950 | ada_remove_trailing_digits (type1->field (i).name (), &len_1); |
4951 | ada_remove_trailing_digits (type2->field (i).name (), &len_2); | |
8f17729f | 4952 | if (len_1 != len_2 |
33d16dd9 SM |
4953 | || strncmp (type1->field (i).name (), |
4954 | type2->field (i).name (), | |
8f17729f JB |
4955 | len_1) != 0) |
4956 | return 0; | |
4957 | } | |
4958 | ||
4959 | return 1; | |
4960 | } | |
4961 | ||
4962 | /* Return nonzero if all the symbols in SYMS are all enumeral symbols | |
4963 | that are deemed "identical" for practical purposes. Sometimes, | |
4964 | enumerals are not strictly identical, but their types are so similar | |
4965 | that they can be considered identical. | |
4966 | ||
4967 | For instance, consider the following code: | |
4968 | ||
4969 | type Color is (Black, Red, Green, Blue, White); | |
4970 | type RGB_Color is new Color range Red .. Blue; | |
4971 | ||
4972 | Type RGB_Color is a subrange of an implicit type which is a copy | |
4973 | of type Color. If we call that implicit type RGB_ColorB ("B" is | |
4974 | for "Base Type"), then type RGB_ColorB is a copy of type Color. | |
4975 | As a result, when an expression references any of the enumeral | |
4976 | by name (Eg. "print green"), the expression is technically | |
4977 | ambiguous and the user should be asked to disambiguate. But | |
4978 | doing so would only hinder the user, since it wouldn't matter | |
4979 | what choice he makes, the outcome would always be the same. | |
4980 | So, for practical purposes, we consider them as the same. */ | |
4981 | ||
4982 | static int | |
54d343a2 | 4983 | symbols_are_identical_enums (const std::vector<struct block_symbol> &syms) |
8f17729f JB |
4984 | { |
4985 | int i; | |
4986 | ||
4987 | /* Before performing a thorough comparison check of each type, | |
4988 | we perform a series of inexpensive checks. We expect that these | |
4989 | checks will quickly fail in the vast majority of cases, and thus | |
4990 | help prevent the unnecessary use of a more expensive comparison. | |
4991 | Said comparison also expects us to make some of these checks | |
4992 | (see ada_identical_enum_types_p). */ | |
4993 | ||
4994 | /* Quick check: All symbols should have an enum type. */ | |
54d343a2 | 4995 | for (i = 0; i < syms.size (); i++) |
5f9c5a63 | 4996 | if (syms[i].symbol->type ()->code () != TYPE_CODE_ENUM) |
8f17729f JB |
4997 | return 0; |
4998 | ||
4999 | /* Quick check: They should all have the same value. */ | |
54d343a2 | 5000 | for (i = 1; i < syms.size (); i++) |
d12307c1 | 5001 | if (SYMBOL_VALUE (syms[i].symbol) != SYMBOL_VALUE (syms[0].symbol)) |
8f17729f JB |
5002 | return 0; |
5003 | ||
5004 | /* Quick check: They should all have the same number of enumerals. */ | |
54d343a2 | 5005 | for (i = 1; i < syms.size (); i++) |
5f9c5a63 SM |
5006 | if (syms[i].symbol->type ()->num_fields () |
5007 | != syms[0].symbol->type ()->num_fields ()) | |
8f17729f JB |
5008 | return 0; |
5009 | ||
5010 | /* All the sanity checks passed, so we might have a set of | |
5011 | identical enumeration types. Perform a more complete | |
5012 | comparison of the type of each symbol. */ | |
54d343a2 | 5013 | for (i = 1; i < syms.size (); i++) |
5f9c5a63 SM |
5014 | if (!ada_identical_enum_types_p (syms[i].symbol->type (), |
5015 | syms[0].symbol->type ())) | |
8f17729f JB |
5016 | return 0; |
5017 | ||
5018 | return 1; | |
5019 | } | |
5020 | ||
54d343a2 | 5021 | /* Remove any non-debugging symbols in SYMS that definitely |
96d887e8 PH |
5022 | duplicate other symbols in the list (The only case I know of where |
5023 | this happens is when object files containing stabs-in-ecoff are | |
5024 | linked with files containing ordinary ecoff debugging symbols (or no | |
1bfa81ac | 5025 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. */ |
4c4b4cd2 | 5026 | |
d1183b06 | 5027 | static void |
54d343a2 | 5028 | remove_extra_symbols (std::vector<struct block_symbol> *syms) |
96d887e8 PH |
5029 | { |
5030 | int i, j; | |
4c4b4cd2 | 5031 | |
8f17729f JB |
5032 | /* We should never be called with less than 2 symbols, as there |
5033 | cannot be any extra symbol in that case. But it's easy to | |
5034 | handle, since we have nothing to do in that case. */ | |
54d343a2 | 5035 | if (syms->size () < 2) |
d1183b06 | 5036 | return; |
8f17729f | 5037 | |
96d887e8 | 5038 | i = 0; |
54d343a2 | 5039 | while (i < syms->size ()) |
96d887e8 | 5040 | { |
a35ddb44 | 5041 | int remove_p = 0; |
339c13b6 JB |
5042 | |
5043 | /* If two symbols have the same name and one of them is a stub type, | |
dda83cd7 | 5044 | the get rid of the stub. */ |
339c13b6 | 5045 | |
5f9c5a63 | 5046 | if ((*syms)[i].symbol->type ()->is_stub () |
dda83cd7 SM |
5047 | && (*syms)[i].symbol->linkage_name () != NULL) |
5048 | { | |
5049 | for (j = 0; j < syms->size (); j++) | |
5050 | { | |
5051 | if (j != i | |
5f9c5a63 | 5052 | && !(*syms)[j].symbol->type ()->is_stub () |
dda83cd7 SM |
5053 | && (*syms)[j].symbol->linkage_name () != NULL |
5054 | && strcmp ((*syms)[i].symbol->linkage_name (), | |
5055 | (*syms)[j].symbol->linkage_name ()) == 0) | |
5056 | remove_p = 1; | |
5057 | } | |
5058 | } | |
339c13b6 JB |
5059 | |
5060 | /* Two symbols with the same name, same class and same address | |
dda83cd7 | 5061 | should be identical. */ |
339c13b6 | 5062 | |
987012b8 | 5063 | else if ((*syms)[i].symbol->linkage_name () != NULL |
66d7f48f | 5064 | && (*syms)[i].symbol->aclass () == LOC_STATIC |
5f9c5a63 | 5065 | && is_nondebugging_type ((*syms)[i].symbol->type ())) |
dda83cd7 SM |
5066 | { |
5067 | for (j = 0; j < syms->size (); j += 1) | |
5068 | { | |
5069 | if (i != j | |
5070 | && (*syms)[j].symbol->linkage_name () != NULL | |
5071 | && strcmp ((*syms)[i].symbol->linkage_name (), | |
5072 | (*syms)[j].symbol->linkage_name ()) == 0 | |
66d7f48f SM |
5073 | && ((*syms)[i].symbol->aclass () |
5074 | == (*syms)[j].symbol->aclass ()) | |
dda83cd7 SM |
5075 | && SYMBOL_VALUE_ADDRESS ((*syms)[i].symbol) |
5076 | == SYMBOL_VALUE_ADDRESS ((*syms)[j].symbol)) | |
5077 | remove_p = 1; | |
5078 | } | |
5079 | } | |
339c13b6 | 5080 | |
a35ddb44 | 5081 | if (remove_p) |
54d343a2 | 5082 | syms->erase (syms->begin () + i); |
1b788fb6 TT |
5083 | else |
5084 | i += 1; | |
14f9c5c9 | 5085 | } |
8f17729f JB |
5086 | |
5087 | /* If all the remaining symbols are identical enumerals, then | |
5088 | just keep the first one and discard the rest. | |
5089 | ||
5090 | Unlike what we did previously, we do not discard any entry | |
5091 | unless they are ALL identical. This is because the symbol | |
5092 | comparison is not a strict comparison, but rather a practical | |
5093 | comparison. If all symbols are considered identical, then | |
5094 | we can just go ahead and use the first one and discard the rest. | |
5095 | But if we cannot reduce the list to a single element, we have | |
5096 | to ask the user to disambiguate anyways. And if we have to | |
5097 | present a multiple-choice menu, it's less confusing if the list | |
5098 | isn't missing some choices that were identical and yet distinct. */ | |
54d343a2 TT |
5099 | if (symbols_are_identical_enums (*syms)) |
5100 | syms->resize (1); | |
14f9c5c9 AS |
5101 | } |
5102 | ||
96d887e8 PH |
5103 | /* Given a type that corresponds to a renaming entity, use the type name |
5104 | to extract the scope (package name or function name, fully qualified, | |
5105 | and following the GNAT encoding convention) where this renaming has been | |
49d83361 | 5106 | defined. */ |
4c4b4cd2 | 5107 | |
49d83361 | 5108 | static std::string |
96d887e8 | 5109 | xget_renaming_scope (struct type *renaming_type) |
14f9c5c9 | 5110 | { |
96d887e8 | 5111 | /* The renaming types adhere to the following convention: |
0963b4bd | 5112 | <scope>__<rename>___<XR extension>. |
96d887e8 PH |
5113 | So, to extract the scope, we search for the "___XR" extension, |
5114 | and then backtrack until we find the first "__". */ | |
76a01679 | 5115 | |
7d93a1e0 | 5116 | const char *name = renaming_type->name (); |
108d56a4 SM |
5117 | const char *suffix = strstr (name, "___XR"); |
5118 | const char *last; | |
14f9c5c9 | 5119 | |
96d887e8 PH |
5120 | /* Now, backtrack a bit until we find the first "__". Start looking |
5121 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 5122 | |
96d887e8 PH |
5123 | for (last = suffix - 3; last > name; last--) |
5124 | if (last[0] == '_' && last[1] == '_') | |
5125 | break; | |
76a01679 | 5126 | |
96d887e8 | 5127 | /* Make a copy of scope and return it. */ |
49d83361 | 5128 | return std::string (name, last); |
4c4b4cd2 PH |
5129 | } |
5130 | ||
96d887e8 | 5131 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 5132 | |
96d887e8 PH |
5133 | static int |
5134 | is_package_name (const char *name) | |
4c4b4cd2 | 5135 | { |
96d887e8 PH |
5136 | /* Here, We take advantage of the fact that no symbols are generated |
5137 | for packages, while symbols are generated for each function. | |
5138 | So the condition for NAME represent a package becomes equivalent | |
5139 | to NAME not existing in our list of symbols. There is only one | |
5140 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 5141 | |
96d887e8 PH |
5142 | /* If it is a function that has not been defined at library level, |
5143 | then we should be able to look it up in the symbols. */ | |
5144 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
5145 | return 0; | |
14f9c5c9 | 5146 | |
96d887e8 PH |
5147 | /* Library-level function names start with "_ada_". See if function |
5148 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 5149 | |
96d887e8 | 5150 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 5151 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
5152 | if (strstr (name, "__") != NULL) |
5153 | return 0; | |
4c4b4cd2 | 5154 | |
528e1572 | 5155 | std::string fun_name = string_printf ("_ada_%s", name); |
14f9c5c9 | 5156 | |
528e1572 | 5157 | return (standard_lookup (fun_name.c_str (), NULL, VAR_DOMAIN) == NULL); |
96d887e8 | 5158 | } |
14f9c5c9 | 5159 | |
96d887e8 | 5160 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 5161 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 5162 | |
96d887e8 | 5163 | static int |
0d5cff50 | 5164 | old_renaming_is_invisible (const struct symbol *sym, const char *function_name) |
96d887e8 | 5165 | { |
66d7f48f | 5166 | if (sym->aclass () != LOC_TYPEDEF) |
aeb5907d JB |
5167 | return 0; |
5168 | ||
5f9c5a63 | 5169 | std::string scope = xget_renaming_scope (sym->type ()); |
14f9c5c9 | 5170 | |
96d887e8 | 5171 | /* If the rename has been defined in a package, then it is visible. */ |
49d83361 TT |
5172 | if (is_package_name (scope.c_str ())) |
5173 | return 0; | |
14f9c5c9 | 5174 | |
96d887e8 PH |
5175 | /* Check that the rename is in the current function scope by checking |
5176 | that its name starts with SCOPE. */ | |
76a01679 | 5177 | |
96d887e8 PH |
5178 | /* If the function name starts with "_ada_", it means that it is |
5179 | a library-level function. Strip this prefix before doing the | |
5180 | comparison, as the encoding for the renaming does not contain | |
5181 | this prefix. */ | |
61012eef | 5182 | if (startswith (function_name, "_ada_")) |
96d887e8 | 5183 | function_name += 5; |
f26caa11 | 5184 | |
49d83361 | 5185 | return !startswith (function_name, scope.c_str ()); |
f26caa11 PH |
5186 | } |
5187 | ||
aeb5907d JB |
5188 | /* Remove entries from SYMS that corresponds to a renaming entity that |
5189 | is not visible from the function associated with CURRENT_BLOCK or | |
5190 | that is superfluous due to the presence of more specific renaming | |
5191 | information. Places surviving symbols in the initial entries of | |
d1183b06 TT |
5192 | SYMS. |
5193 | ||
96d887e8 | 5194 | Rationale: |
aeb5907d JB |
5195 | First, in cases where an object renaming is implemented as a |
5196 | reference variable, GNAT may produce both the actual reference | |
5197 | variable and the renaming encoding. In this case, we discard the | |
5198 | latter. | |
5199 | ||
5200 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
5201 | entity. Unfortunately, STABS currently does not support the definition |
5202 | of types that are local to a given lexical block, so all renamings types | |
5203 | are emitted at library level. As a consequence, if an application | |
5204 | contains two renaming entities using the same name, and a user tries to | |
5205 | print the value of one of these entities, the result of the ada symbol | |
5206 | lookup will also contain the wrong renaming type. | |
f26caa11 | 5207 | |
96d887e8 PH |
5208 | This function partially covers for this limitation by attempting to |
5209 | remove from the SYMS list renaming symbols that should be visible | |
5210 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
5211 | method with the current information available. The implementation | |
5212 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
5213 | ||
5214 | - When the user tries to print a rename in a function while there | |
dda83cd7 SM |
5215 | is another rename entity defined in a package: Normally, the |
5216 | rename in the function has precedence over the rename in the | |
5217 | package, so the latter should be removed from the list. This is | |
5218 | currently not the case. | |
5219 | ||
96d887e8 | 5220 | - This function will incorrectly remove valid renames if |
dda83cd7 SM |
5221 | the CURRENT_BLOCK corresponds to a function which symbol name |
5222 | has been changed by an "Export" pragma. As a consequence, | |
5223 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 5224 | |
d1183b06 | 5225 | static void |
54d343a2 TT |
5226 | remove_irrelevant_renamings (std::vector<struct block_symbol> *syms, |
5227 | const struct block *current_block) | |
4c4b4cd2 PH |
5228 | { |
5229 | struct symbol *current_function; | |
0d5cff50 | 5230 | const char *current_function_name; |
4c4b4cd2 | 5231 | int i; |
aeb5907d JB |
5232 | int is_new_style_renaming; |
5233 | ||
5234 | /* If there is both a renaming foo___XR... encoded as a variable and | |
5235 | a simple variable foo in the same block, discard the latter. | |
0963b4bd | 5236 | First, zero out such symbols, then compress. */ |
aeb5907d | 5237 | is_new_style_renaming = 0; |
54d343a2 | 5238 | for (i = 0; i < syms->size (); i += 1) |
aeb5907d | 5239 | { |
54d343a2 TT |
5240 | struct symbol *sym = (*syms)[i].symbol; |
5241 | const struct block *block = (*syms)[i].block; | |
aeb5907d JB |
5242 | const char *name; |
5243 | const char *suffix; | |
5244 | ||
66d7f48f | 5245 | if (sym == NULL || sym->aclass () == LOC_TYPEDEF) |
aeb5907d | 5246 | continue; |
987012b8 | 5247 | name = sym->linkage_name (); |
aeb5907d JB |
5248 | suffix = strstr (name, "___XR"); |
5249 | ||
5250 | if (suffix != NULL) | |
5251 | { | |
5252 | int name_len = suffix - name; | |
5253 | int j; | |
5b4ee69b | 5254 | |
aeb5907d | 5255 | is_new_style_renaming = 1; |
54d343a2 TT |
5256 | for (j = 0; j < syms->size (); j += 1) |
5257 | if (i != j && (*syms)[j].symbol != NULL | |
987012b8 | 5258 | && strncmp (name, (*syms)[j].symbol->linkage_name (), |
aeb5907d | 5259 | name_len) == 0 |
54d343a2 TT |
5260 | && block == (*syms)[j].block) |
5261 | (*syms)[j].symbol = NULL; | |
aeb5907d JB |
5262 | } |
5263 | } | |
5264 | if (is_new_style_renaming) | |
5265 | { | |
5266 | int j, k; | |
5267 | ||
54d343a2 TT |
5268 | for (j = k = 0; j < syms->size (); j += 1) |
5269 | if ((*syms)[j].symbol != NULL) | |
aeb5907d | 5270 | { |
54d343a2 | 5271 | (*syms)[k] = (*syms)[j]; |
aeb5907d JB |
5272 | k += 1; |
5273 | } | |
d1183b06 TT |
5274 | syms->resize (k); |
5275 | return; | |
aeb5907d | 5276 | } |
4c4b4cd2 PH |
5277 | |
5278 | /* Extract the function name associated to CURRENT_BLOCK. | |
5279 | Abort if unable to do so. */ | |
76a01679 | 5280 | |
4c4b4cd2 | 5281 | if (current_block == NULL) |
d1183b06 | 5282 | return; |
76a01679 | 5283 | |
7f0df278 | 5284 | current_function = block_linkage_function (current_block); |
4c4b4cd2 | 5285 | if (current_function == NULL) |
d1183b06 | 5286 | return; |
4c4b4cd2 | 5287 | |
987012b8 | 5288 | current_function_name = current_function->linkage_name (); |
4c4b4cd2 | 5289 | if (current_function_name == NULL) |
d1183b06 | 5290 | return; |
4c4b4cd2 PH |
5291 | |
5292 | /* Check each of the symbols, and remove it from the list if it is | |
5293 | a type corresponding to a renaming that is out of the scope of | |
5294 | the current block. */ | |
5295 | ||
5296 | i = 0; | |
54d343a2 | 5297 | while (i < syms->size ()) |
4c4b4cd2 | 5298 | { |
54d343a2 | 5299 | if (ada_parse_renaming ((*syms)[i].symbol, NULL, NULL, NULL) |
dda83cd7 SM |
5300 | == ADA_OBJECT_RENAMING |
5301 | && old_renaming_is_invisible ((*syms)[i].symbol, | |
54d343a2 TT |
5302 | current_function_name)) |
5303 | syms->erase (syms->begin () + i); | |
4c4b4cd2 | 5304 | else |
dda83cd7 | 5305 | i += 1; |
4c4b4cd2 | 5306 | } |
4c4b4cd2 PH |
5307 | } |
5308 | ||
d1183b06 | 5309 | /* Add to RESULT all symbols from BLOCK (and its super-blocks) |
cd458349 | 5310 | whose name and domain match LOOKUP_NAME and DOMAIN respectively. |
339c13b6 | 5311 | |
cd458349 | 5312 | Note: This function assumes that RESULT is empty. */ |
339c13b6 JB |
5313 | |
5314 | static void | |
d1183b06 | 5315 | ada_add_local_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
5316 | const lookup_name_info &lookup_name, |
5317 | const struct block *block, domain_enum domain) | |
339c13b6 | 5318 | { |
339c13b6 JB |
5319 | while (block != NULL) |
5320 | { | |
d1183b06 | 5321 | ada_add_block_symbols (result, block, lookup_name, domain, NULL); |
339c13b6 | 5322 | |
ba8694b6 TT |
5323 | /* If we found a non-function match, assume that's the one. We |
5324 | only check this when finding a function boundary, so that we | |
5325 | can accumulate all results from intervening blocks first. */ | |
5326 | if (BLOCK_FUNCTION (block) != nullptr && is_nonfunction (result)) | |
dda83cd7 | 5327 | return; |
339c13b6 JB |
5328 | |
5329 | block = BLOCK_SUPERBLOCK (block); | |
5330 | } | |
339c13b6 JB |
5331 | } |
5332 | ||
2315bb2d | 5333 | /* An object of this type is used as the callback argument when |
40658b94 | 5334 | calling the map_matching_symbols method. */ |
ccefe4c4 | 5335 | |
40658b94 | 5336 | struct match_data |
ccefe4c4 | 5337 | { |
1bfa81ac TT |
5338 | explicit match_data (std::vector<struct block_symbol> *rp) |
5339 | : resultp (rp) | |
5340 | { | |
5341 | } | |
5342 | DISABLE_COPY_AND_ASSIGN (match_data); | |
5343 | ||
2315bb2d TT |
5344 | bool operator() (struct block_symbol *bsym); |
5345 | ||
1bfa81ac | 5346 | struct objfile *objfile = nullptr; |
d1183b06 | 5347 | std::vector<struct block_symbol> *resultp; |
1bfa81ac | 5348 | struct symbol *arg_sym = nullptr; |
1178743e | 5349 | bool found_sym = false; |
ccefe4c4 TT |
5350 | }; |
5351 | ||
2315bb2d TT |
5352 | /* A callback for add_nonlocal_symbols that adds symbol, found in |
5353 | BSYM, to a list of symbols. */ | |
ccefe4c4 | 5354 | |
2315bb2d TT |
5355 | bool |
5356 | match_data::operator() (struct block_symbol *bsym) | |
ccefe4c4 | 5357 | { |
199b4314 TT |
5358 | const struct block *block = bsym->block; |
5359 | struct symbol *sym = bsym->symbol; | |
5360 | ||
40658b94 PH |
5361 | if (sym == NULL) |
5362 | { | |
2315bb2d TT |
5363 | if (!found_sym && arg_sym != NULL) |
5364 | add_defn_to_vec (*resultp, | |
5365 | fixup_symbol_section (arg_sym, objfile), | |
40658b94 | 5366 | block); |
2315bb2d TT |
5367 | found_sym = false; |
5368 | arg_sym = NULL; | |
40658b94 PH |
5369 | } |
5370 | else | |
5371 | { | |
66d7f48f | 5372 | if (sym->aclass () == LOC_UNRESOLVED) |
199b4314 | 5373 | return true; |
d9743061 | 5374 | else if (sym->is_argument ()) |
2315bb2d | 5375 | arg_sym = sym; |
40658b94 PH |
5376 | else |
5377 | { | |
2315bb2d TT |
5378 | found_sym = true; |
5379 | add_defn_to_vec (*resultp, | |
5380 | fixup_symbol_section (sym, objfile), | |
40658b94 PH |
5381 | block); |
5382 | } | |
5383 | } | |
199b4314 | 5384 | return true; |
40658b94 PH |
5385 | } |
5386 | ||
b5ec771e PA |
5387 | /* Helper for add_nonlocal_symbols. Find symbols in DOMAIN which are |
5388 | targeted by renamings matching LOOKUP_NAME in BLOCK. Add these | |
1bfa81ac | 5389 | symbols to RESULT. Return whether we found such symbols. */ |
22cee43f PMR |
5390 | |
5391 | static int | |
d1183b06 | 5392 | ada_add_block_renamings (std::vector<struct block_symbol> &result, |
22cee43f | 5393 | const struct block *block, |
b5ec771e PA |
5394 | const lookup_name_info &lookup_name, |
5395 | domain_enum domain) | |
22cee43f PMR |
5396 | { |
5397 | struct using_direct *renaming; | |
d1183b06 | 5398 | int defns_mark = result.size (); |
22cee43f | 5399 | |
b5ec771e PA |
5400 | symbol_name_matcher_ftype *name_match |
5401 | = ada_get_symbol_name_matcher (lookup_name); | |
5402 | ||
22cee43f PMR |
5403 | for (renaming = block_using (block); |
5404 | renaming != NULL; | |
5405 | renaming = renaming->next) | |
5406 | { | |
5407 | const char *r_name; | |
22cee43f PMR |
5408 | |
5409 | /* Avoid infinite recursions: skip this renaming if we are actually | |
5410 | already traversing it. | |
5411 | ||
5412 | Currently, symbol lookup in Ada don't use the namespace machinery from | |
5413 | C++/Fortran support: skip namespace imports that use them. */ | |
5414 | if (renaming->searched | |
5415 | || (renaming->import_src != NULL | |
5416 | && renaming->import_src[0] != '\0') | |
5417 | || (renaming->import_dest != NULL | |
5418 | && renaming->import_dest[0] != '\0')) | |
5419 | continue; | |
5420 | renaming->searched = 1; | |
5421 | ||
5422 | /* TODO: here, we perform another name-based symbol lookup, which can | |
5423 | pull its own multiple overloads. In theory, we should be able to do | |
5424 | better in this case since, in DWARF, DW_AT_import is a DIE reference, | |
5425 | not a simple name. But in order to do this, we would need to enhance | |
5426 | the DWARF reader to associate a symbol to this renaming, instead of a | |
5427 | name. So, for now, we do something simpler: re-use the C++/Fortran | |
5428 | namespace machinery. */ | |
5429 | r_name = (renaming->alias != NULL | |
5430 | ? renaming->alias | |
5431 | : renaming->declaration); | |
b5ec771e PA |
5432 | if (name_match (r_name, lookup_name, NULL)) |
5433 | { | |
5434 | lookup_name_info decl_lookup_name (renaming->declaration, | |
5435 | lookup_name.match_type ()); | |
d1183b06 | 5436 | ada_add_all_symbols (result, block, decl_lookup_name, domain, |
b5ec771e PA |
5437 | 1, NULL); |
5438 | } | |
22cee43f PMR |
5439 | renaming->searched = 0; |
5440 | } | |
d1183b06 | 5441 | return result.size () != defns_mark; |
22cee43f PMR |
5442 | } |
5443 | ||
db230ce3 JB |
5444 | /* Implements compare_names, but only applying the comparision using |
5445 | the given CASING. */ | |
5b4ee69b | 5446 | |
40658b94 | 5447 | static int |
db230ce3 JB |
5448 | compare_names_with_case (const char *string1, const char *string2, |
5449 | enum case_sensitivity casing) | |
40658b94 PH |
5450 | { |
5451 | while (*string1 != '\0' && *string2 != '\0') | |
5452 | { | |
db230ce3 JB |
5453 | char c1, c2; |
5454 | ||
40658b94 PH |
5455 | if (isspace (*string1) || isspace (*string2)) |
5456 | return strcmp_iw_ordered (string1, string2); | |
db230ce3 JB |
5457 | |
5458 | if (casing == case_sensitive_off) | |
5459 | { | |
5460 | c1 = tolower (*string1); | |
5461 | c2 = tolower (*string2); | |
5462 | } | |
5463 | else | |
5464 | { | |
5465 | c1 = *string1; | |
5466 | c2 = *string2; | |
5467 | } | |
5468 | if (c1 != c2) | |
40658b94 | 5469 | break; |
db230ce3 | 5470 | |
40658b94 PH |
5471 | string1 += 1; |
5472 | string2 += 1; | |
5473 | } | |
db230ce3 | 5474 | |
40658b94 PH |
5475 | switch (*string1) |
5476 | { | |
5477 | case '(': | |
5478 | return strcmp_iw_ordered (string1, string2); | |
5479 | case '_': | |
5480 | if (*string2 == '\0') | |
5481 | { | |
052874e8 | 5482 | if (is_name_suffix (string1)) |
40658b94 PH |
5483 | return 0; |
5484 | else | |
1a1d5513 | 5485 | return 1; |
40658b94 | 5486 | } |
dbb8534f | 5487 | /* FALLTHROUGH */ |
40658b94 PH |
5488 | default: |
5489 | if (*string2 == '(') | |
5490 | return strcmp_iw_ordered (string1, string2); | |
5491 | else | |
db230ce3 JB |
5492 | { |
5493 | if (casing == case_sensitive_off) | |
5494 | return tolower (*string1) - tolower (*string2); | |
5495 | else | |
5496 | return *string1 - *string2; | |
5497 | } | |
40658b94 | 5498 | } |
ccefe4c4 TT |
5499 | } |
5500 | ||
db230ce3 JB |
5501 | /* Compare STRING1 to STRING2, with results as for strcmp. |
5502 | Compatible with strcmp_iw_ordered in that... | |
5503 | ||
5504 | strcmp_iw_ordered (STRING1, STRING2) <= 0 | |
5505 | ||
5506 | ... implies... | |
5507 | ||
5508 | compare_names (STRING1, STRING2) <= 0 | |
5509 | ||
5510 | (they may differ as to what symbols compare equal). */ | |
5511 | ||
5512 | static int | |
5513 | compare_names (const char *string1, const char *string2) | |
5514 | { | |
5515 | int result; | |
5516 | ||
5517 | /* Similar to what strcmp_iw_ordered does, we need to perform | |
5518 | a case-insensitive comparison first, and only resort to | |
5519 | a second, case-sensitive, comparison if the first one was | |
5520 | not sufficient to differentiate the two strings. */ | |
5521 | ||
5522 | result = compare_names_with_case (string1, string2, case_sensitive_off); | |
5523 | if (result == 0) | |
5524 | result = compare_names_with_case (string1, string2, case_sensitive_on); | |
5525 | ||
5526 | return result; | |
5527 | } | |
5528 | ||
b5ec771e PA |
5529 | /* Convenience function to get at the Ada encoded lookup name for |
5530 | LOOKUP_NAME, as a C string. */ | |
5531 | ||
5532 | static const char * | |
5533 | ada_lookup_name (const lookup_name_info &lookup_name) | |
5534 | { | |
5535 | return lookup_name.ada ().lookup_name ().c_str (); | |
5536 | } | |
5537 | ||
0b7b2c2a TT |
5538 | /* A helper for add_nonlocal_symbols. Call expand_matching_symbols |
5539 | for OBJFILE, then walk the objfile's symtabs and update the | |
5540 | results. */ | |
5541 | ||
5542 | static void | |
5543 | map_matching_symbols (struct objfile *objfile, | |
5544 | const lookup_name_info &lookup_name, | |
5545 | bool is_wild_match, | |
5546 | domain_enum domain, | |
5547 | int global, | |
5548 | match_data &data) | |
5549 | { | |
5550 | data.objfile = objfile; | |
5551 | objfile->expand_matching_symbols (lookup_name, domain, global, | |
5552 | is_wild_match ? nullptr : compare_names); | |
5553 | ||
5554 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5555 | for (compunit_symtab *symtab : objfile->compunits ()) | |
5556 | { | |
5557 | const struct block *block | |
af39c5c8 | 5558 | = BLOCKVECTOR_BLOCK (symtab->blockvector (), block_kind); |
0b7b2c2a TT |
5559 | if (!iterate_over_symbols_terminated (block, lookup_name, |
5560 | domain, data)) | |
5561 | break; | |
5562 | } | |
5563 | } | |
5564 | ||
1bfa81ac | 5565 | /* Add to RESULT all non-local symbols whose name and domain match |
b5ec771e PA |
5566 | LOOKUP_NAME and DOMAIN respectively. The search is performed on |
5567 | GLOBAL_BLOCK symbols if GLOBAL is non-zero, or on STATIC_BLOCK | |
5568 | symbols otherwise. */ | |
339c13b6 JB |
5569 | |
5570 | static void | |
d1183b06 | 5571 | add_nonlocal_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
5572 | const lookup_name_info &lookup_name, |
5573 | domain_enum domain, int global) | |
339c13b6 | 5574 | { |
1bfa81ac | 5575 | struct match_data data (&result); |
339c13b6 | 5576 | |
b5ec771e PA |
5577 | bool is_wild_match = lookup_name.ada ().wild_match_p (); |
5578 | ||
2030c079 | 5579 | for (objfile *objfile : current_program_space->objfiles ()) |
40658b94 | 5580 | { |
0b7b2c2a TT |
5581 | map_matching_symbols (objfile, lookup_name, is_wild_match, domain, |
5582 | global, data); | |
22cee43f | 5583 | |
b669c953 | 5584 | for (compunit_symtab *cu : objfile->compunits ()) |
22cee43f PMR |
5585 | { |
5586 | const struct block *global_block | |
af39c5c8 | 5587 | = BLOCKVECTOR_BLOCK (cu->blockvector (), GLOBAL_BLOCK); |
22cee43f | 5588 | |
d1183b06 | 5589 | if (ada_add_block_renamings (result, global_block, lookup_name, |
b5ec771e | 5590 | domain)) |
1178743e | 5591 | data.found_sym = true; |
22cee43f | 5592 | } |
40658b94 PH |
5593 | } |
5594 | ||
d1183b06 | 5595 | if (result.empty () && global && !is_wild_match) |
40658b94 | 5596 | { |
b5ec771e | 5597 | const char *name = ada_lookup_name (lookup_name); |
e0802d59 TT |
5598 | std::string bracket_name = std::string ("<_ada_") + name + '>'; |
5599 | lookup_name_info name1 (bracket_name, symbol_name_match_type::FULL); | |
b5ec771e | 5600 | |
2030c079 | 5601 | for (objfile *objfile : current_program_space->objfiles ()) |
0b7b2c2a TT |
5602 | map_matching_symbols (objfile, name1, false, domain, global, data); |
5603 | } | |
339c13b6 JB |
5604 | } |
5605 | ||
b5ec771e PA |
5606 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if |
5607 | FULL_SEARCH is non-zero, enclosing scope and in global scopes, | |
1bfa81ac | 5608 | returning the number of matches. Add these to RESULT. |
4eeaa230 | 5609 | |
22cee43f PMR |
5610 | When FULL_SEARCH is non-zero, any non-function/non-enumeral |
5611 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
4c4b4cd2 | 5612 | is the one match returned (no other matches in that or |
d9680e73 | 5613 | enclosing blocks is returned). If there are any matches in or |
22cee43f | 5614 | surrounding BLOCK, then these alone are returned. |
4eeaa230 | 5615 | |
b5ec771e PA |
5616 | Names prefixed with "standard__" are handled specially: |
5617 | "standard__" is first stripped off (by the lookup_name | |
5618 | constructor), and only static and global symbols are searched. | |
14f9c5c9 | 5619 | |
22cee43f PMR |
5620 | If MADE_GLOBAL_LOOKUP_P is non-null, set it before return to whether we had |
5621 | to lookup global symbols. */ | |
5622 | ||
5623 | static void | |
d1183b06 | 5624 | ada_add_all_symbols (std::vector<struct block_symbol> &result, |
22cee43f | 5625 | const struct block *block, |
b5ec771e | 5626 | const lookup_name_info &lookup_name, |
22cee43f PMR |
5627 | domain_enum domain, |
5628 | int full_search, | |
5629 | int *made_global_lookup_p) | |
14f9c5c9 AS |
5630 | { |
5631 | struct symbol *sym; | |
14f9c5c9 | 5632 | |
22cee43f PMR |
5633 | if (made_global_lookup_p) |
5634 | *made_global_lookup_p = 0; | |
339c13b6 JB |
5635 | |
5636 | /* Special case: If the user specifies a symbol name inside package | |
5637 | Standard, do a non-wild matching of the symbol name without | |
5638 | the "standard__" prefix. This was primarily introduced in order | |
5639 | to allow the user to specifically access the standard exceptions | |
5640 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
5641 | is ambiguous (due to the user defining its own Constraint_Error | |
5642 | entity inside its program). */ | |
b5ec771e PA |
5643 | if (lookup_name.ada ().standard_p ()) |
5644 | block = NULL; | |
4c4b4cd2 | 5645 | |
339c13b6 | 5646 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 5647 | |
4eeaa230 DE |
5648 | if (block != NULL) |
5649 | { | |
5650 | if (full_search) | |
d1183b06 | 5651 | ada_add_local_symbols (result, lookup_name, block, domain); |
4eeaa230 DE |
5652 | else |
5653 | { | |
5654 | /* In the !full_search case we're are being called by | |
4009ee92 | 5655 | iterate_over_symbols, and we don't want to search |
4eeaa230 | 5656 | superblocks. */ |
d1183b06 | 5657 | ada_add_block_symbols (result, block, lookup_name, domain, NULL); |
4eeaa230 | 5658 | } |
d1183b06 | 5659 | if (!result.empty () || !full_search) |
22cee43f | 5660 | return; |
4eeaa230 | 5661 | } |
d2e4a39e | 5662 | |
339c13b6 JB |
5663 | /* No non-global symbols found. Check our cache to see if we have |
5664 | already performed this search before. If we have, then return | |
5665 | the same result. */ | |
5666 | ||
b5ec771e PA |
5667 | if (lookup_cached_symbol (ada_lookup_name (lookup_name), |
5668 | domain, &sym, &block)) | |
4c4b4cd2 PH |
5669 | { |
5670 | if (sym != NULL) | |
d1183b06 | 5671 | add_defn_to_vec (result, sym, block); |
22cee43f | 5672 | return; |
4c4b4cd2 | 5673 | } |
14f9c5c9 | 5674 | |
22cee43f PMR |
5675 | if (made_global_lookup_p) |
5676 | *made_global_lookup_p = 1; | |
b1eedac9 | 5677 | |
339c13b6 JB |
5678 | /* Search symbols from all global blocks. */ |
5679 | ||
d1183b06 | 5680 | add_nonlocal_symbols (result, lookup_name, domain, 1); |
d2e4a39e | 5681 | |
4c4b4cd2 | 5682 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 5683 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 5684 | |
d1183b06 TT |
5685 | if (result.empty ()) |
5686 | add_nonlocal_symbols (result, lookup_name, domain, 0); | |
22cee43f PMR |
5687 | } |
5688 | ||
b5ec771e | 5689 | /* Find symbols in DOMAIN matching LOOKUP_NAME, in BLOCK and, if FULL_SEARCH |
d1183b06 TT |
5690 | is non-zero, enclosing scope and in global scopes. |
5691 | ||
5692 | Returns (SYM,BLOCK) tuples, indicating the symbols found and the | |
5693 | blocks and symbol tables (if any) in which they were found. | |
22cee43f PMR |
5694 | |
5695 | When full_search is non-zero, any non-function/non-enumeral | |
5696 | symbol match within the nest of blocks whose innermost member is BLOCK, | |
5697 | is the one match returned (no other matches in that or | |
5698 | enclosing blocks is returned). If there are any matches in or | |
5699 | surrounding BLOCK, then these alone are returned. | |
5700 | ||
5701 | Names prefixed with "standard__" are handled specially: "standard__" | |
5702 | is first stripped off, and only static and global symbols are searched. */ | |
5703 | ||
d1183b06 | 5704 | static std::vector<struct block_symbol> |
b5ec771e PA |
5705 | ada_lookup_symbol_list_worker (const lookup_name_info &lookup_name, |
5706 | const struct block *block, | |
22cee43f | 5707 | domain_enum domain, |
22cee43f PMR |
5708 | int full_search) |
5709 | { | |
22cee43f | 5710 | int syms_from_global_search; |
d1183b06 | 5711 | std::vector<struct block_symbol> results; |
22cee43f | 5712 | |
d1183b06 | 5713 | ada_add_all_symbols (results, block, lookup_name, |
b5ec771e | 5714 | domain, full_search, &syms_from_global_search); |
14f9c5c9 | 5715 | |
d1183b06 | 5716 | remove_extra_symbols (&results); |
4c4b4cd2 | 5717 | |
d1183b06 | 5718 | if (results.empty () && full_search && syms_from_global_search) |
b5ec771e | 5719 | cache_symbol (ada_lookup_name (lookup_name), domain, NULL, NULL); |
14f9c5c9 | 5720 | |
d1183b06 | 5721 | if (results.size () == 1 && full_search && syms_from_global_search) |
b5ec771e | 5722 | cache_symbol (ada_lookup_name (lookup_name), domain, |
d1183b06 | 5723 | results[0].symbol, results[0].block); |
ec6a20c2 | 5724 | |
d1183b06 TT |
5725 | remove_irrelevant_renamings (&results, block); |
5726 | return results; | |
14f9c5c9 AS |
5727 | } |
5728 | ||
b5ec771e | 5729 | /* Find symbols in DOMAIN matching NAME, in BLOCK and enclosing scope and |
d1183b06 | 5730 | in global scopes, returning (SYM,BLOCK) tuples. |
ec6a20c2 | 5731 | |
4eeaa230 DE |
5732 | See ada_lookup_symbol_list_worker for further details. */ |
5733 | ||
d1183b06 | 5734 | std::vector<struct block_symbol> |
b5ec771e | 5735 | ada_lookup_symbol_list (const char *name, const struct block *block, |
d1183b06 | 5736 | domain_enum domain) |
4eeaa230 | 5737 | { |
b5ec771e PA |
5738 | symbol_name_match_type name_match_type = name_match_type_from_name (name); |
5739 | lookup_name_info lookup_name (name, name_match_type); | |
5740 | ||
d1183b06 | 5741 | return ada_lookup_symbol_list_worker (lookup_name, block, domain, 1); |
4eeaa230 DE |
5742 | } |
5743 | ||
4e5c77fe JB |
5744 | /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set |
5745 | to 1, but choosing the first symbol found if there are multiple | |
5746 | choices. | |
5747 | ||
5e2336be JB |
5748 | The result is stored in *INFO, which must be non-NULL. |
5749 | If no match is found, INFO->SYM is set to NULL. */ | |
4e5c77fe JB |
5750 | |
5751 | void | |
5752 | ada_lookup_encoded_symbol (const char *name, const struct block *block, | |
fe978cb0 | 5753 | domain_enum domain, |
d12307c1 | 5754 | struct block_symbol *info) |
14f9c5c9 | 5755 | { |
b5ec771e PA |
5756 | /* Since we already have an encoded name, wrap it in '<>' to force a |
5757 | verbatim match. Otherwise, if the name happens to not look like | |
5758 | an encoded name (because it doesn't include a "__"), | |
5759 | ada_lookup_name_info would re-encode/fold it again, and that | |
5760 | would e.g., incorrectly lowercase object renaming names like | |
5761 | "R28b" -> "r28b". */ | |
12932e2c | 5762 | std::string verbatim = add_angle_brackets (name); |
b5ec771e | 5763 | |
5e2336be | 5764 | gdb_assert (info != NULL); |
65392b3e | 5765 | *info = ada_lookup_symbol (verbatim.c_str (), block, domain); |
4e5c77fe | 5766 | } |
aeb5907d JB |
5767 | |
5768 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
5769 | scope and in global scopes, or NULL if none. NAME is folded and | |
5770 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
65392b3e | 5771 | choosing the first symbol if there are multiple choices. */ |
4e5c77fe | 5772 | |
d12307c1 | 5773 | struct block_symbol |
aeb5907d | 5774 | ada_lookup_symbol (const char *name, const struct block *block0, |
dda83cd7 | 5775 | domain_enum domain) |
aeb5907d | 5776 | { |
d1183b06 TT |
5777 | std::vector<struct block_symbol> candidates |
5778 | = ada_lookup_symbol_list (name, block0, domain); | |
f98fc17b | 5779 | |
d1183b06 | 5780 | if (candidates.empty ()) |
54d343a2 | 5781 | return {}; |
f98fc17b PA |
5782 | |
5783 | block_symbol info = candidates[0]; | |
5784 | info.symbol = fixup_symbol_section (info.symbol, NULL); | |
d12307c1 | 5785 | return info; |
4c4b4cd2 | 5786 | } |
14f9c5c9 | 5787 | |
14f9c5c9 | 5788 | |
4c4b4cd2 PH |
5789 | /* True iff STR is a possible encoded suffix of a normal Ada name |
5790 | that is to be ignored for matching purposes. Suffixes of parallel | |
5791 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 5792 | are given by any of the regular expressions: |
4c4b4cd2 | 5793 | |
babe1480 JB |
5794 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
5795 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
9ac7f98e | 5796 | TKB [subprogram suffix for task bodies] |
babe1480 | 5797 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 5798 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
5799 | |
5800 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
5801 | match is performed. This sequence is used to differentiate homonyms, | |
5802 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 5803 | |
14f9c5c9 | 5804 | static int |
d2e4a39e | 5805 | is_name_suffix (const char *str) |
14f9c5c9 AS |
5806 | { |
5807 | int k; | |
4c4b4cd2 PH |
5808 | const char *matching; |
5809 | const int len = strlen (str); | |
5810 | ||
babe1480 JB |
5811 | /* Skip optional leading __[0-9]+. */ |
5812 | ||
4c4b4cd2 PH |
5813 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
5814 | { | |
babe1480 JB |
5815 | str += 3; |
5816 | while (isdigit (str[0])) | |
dda83cd7 | 5817 | str += 1; |
4c4b4cd2 | 5818 | } |
babe1480 JB |
5819 | |
5820 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 5821 | |
babe1480 | 5822 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 5823 | { |
babe1480 | 5824 | matching = str + 1; |
4c4b4cd2 | 5825 | while (isdigit (matching[0])) |
dda83cd7 | 5826 | matching += 1; |
4c4b4cd2 | 5827 | if (matching[0] == '\0') |
dda83cd7 | 5828 | return 1; |
4c4b4cd2 PH |
5829 | } |
5830 | ||
5831 | /* ___[0-9]+ */ | |
babe1480 | 5832 | |
4c4b4cd2 PH |
5833 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
5834 | { | |
5835 | matching = str + 3; | |
5836 | while (isdigit (matching[0])) | |
dda83cd7 | 5837 | matching += 1; |
4c4b4cd2 | 5838 | if (matching[0] == '\0') |
dda83cd7 | 5839 | return 1; |
4c4b4cd2 PH |
5840 | } |
5841 | ||
9ac7f98e JB |
5842 | /* "TKB" suffixes are used for subprograms implementing task bodies. */ |
5843 | ||
5844 | if (strcmp (str, "TKB") == 0) | |
5845 | return 1; | |
5846 | ||
529cad9c PH |
5847 | #if 0 |
5848 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
0963b4bd MS |
5849 | with a N at the end. Unfortunately, the compiler uses the same |
5850 | convention for other internal types it creates. So treating | |
529cad9c | 5851 | all entity names that end with an "N" as a name suffix causes |
0963b4bd MS |
5852 | some regressions. For instance, consider the case of an enumerated |
5853 | type. To support the 'Image attribute, it creates an array whose | |
529cad9c PH |
5854 | name ends with N. |
5855 | Having a single character like this as a suffix carrying some | |
0963b4bd | 5856 | information is a bit risky. Perhaps we should change the encoding |
529cad9c PH |
5857 | to be something like "_N" instead. In the meantime, do not do |
5858 | the following check. */ | |
5859 | /* Protected Object Subprograms */ | |
5860 | if (len == 1 && str [0] == 'N') | |
5861 | return 1; | |
5862 | #endif | |
5863 | ||
5864 | /* _E[0-9]+[bs]$ */ | |
5865 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
5866 | { | |
5867 | matching = str + 3; | |
5868 | while (isdigit (matching[0])) | |
dda83cd7 | 5869 | matching += 1; |
529cad9c | 5870 | if ((matching[0] == 'b' || matching[0] == 's') |
dda83cd7 SM |
5871 | && matching [1] == '\0') |
5872 | return 1; | |
529cad9c PH |
5873 | } |
5874 | ||
4c4b4cd2 PH |
5875 | /* ??? We should not modify STR directly, as we are doing below. This |
5876 | is fine in this case, but may become problematic later if we find | |
5877 | that this alternative did not work, and want to try matching | |
5878 | another one from the begining of STR. Since we modified it, we | |
5879 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
5880 | if (str[0] == 'X') |
5881 | { | |
5882 | str += 1; | |
d2e4a39e | 5883 | while (str[0] != '_' && str[0] != '\0') |
dda83cd7 SM |
5884 | { |
5885 | if (str[0] != 'n' && str[0] != 'b') | |
5886 | return 0; | |
5887 | str += 1; | |
5888 | } | |
14f9c5c9 | 5889 | } |
babe1480 | 5890 | |
14f9c5c9 AS |
5891 | if (str[0] == '\000') |
5892 | return 1; | |
babe1480 | 5893 | |
d2e4a39e | 5894 | if (str[0] == '_') |
14f9c5c9 AS |
5895 | { |
5896 | if (str[1] != '_' || str[2] == '\000') | |
dda83cd7 | 5897 | return 0; |
d2e4a39e | 5898 | if (str[2] == '_') |
dda83cd7 SM |
5899 | { |
5900 | if (strcmp (str + 3, "JM") == 0) | |
5901 | return 1; | |
5902 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
5903 | the LJM suffix in favor of the JM one. But we will | |
5904 | still accept LJM as a valid suffix for a reasonable | |
5905 | amount of time, just to allow ourselves to debug programs | |
5906 | compiled using an older version of GNAT. */ | |
5907 | if (strcmp (str + 3, "LJM") == 0) | |
5908 | return 1; | |
5909 | if (str[3] != 'X') | |
5910 | return 0; | |
5911 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' | |
5912 | || str[4] == 'U' || str[4] == 'P') | |
5913 | return 1; | |
5914 | if (str[4] == 'R' && str[5] != 'T') | |
5915 | return 1; | |
5916 | return 0; | |
5917 | } | |
4c4b4cd2 | 5918 | if (!isdigit (str[2])) |
dda83cd7 | 5919 | return 0; |
4c4b4cd2 | 5920 | for (k = 3; str[k] != '\0'; k += 1) |
dda83cd7 SM |
5921 | if (!isdigit (str[k]) && str[k] != '_') |
5922 | return 0; | |
14f9c5c9 AS |
5923 | return 1; |
5924 | } | |
4c4b4cd2 | 5925 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 5926 | { |
4c4b4cd2 | 5927 | for (k = 2; str[k] != '\0'; k += 1) |
dda83cd7 SM |
5928 | if (!isdigit (str[k]) && str[k] != '_') |
5929 | return 0; | |
14f9c5c9 AS |
5930 | return 1; |
5931 | } | |
5932 | return 0; | |
5933 | } | |
d2e4a39e | 5934 | |
aeb5907d JB |
5935 | /* Return non-zero if the string starting at NAME and ending before |
5936 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5937 | |
5938 | static int | |
5939 | is_valid_name_for_wild_match (const char *name0) | |
5940 | { | |
f945dedf | 5941 | std::string decoded_name = ada_decode (name0); |
529cad9c PH |
5942 | int i; |
5943 | ||
5823c3ef JB |
5944 | /* If the decoded name starts with an angle bracket, it means that |
5945 | NAME0 does not follow the GNAT encoding format. It should then | |
5946 | not be allowed as a possible wild match. */ | |
5947 | if (decoded_name[0] == '<') | |
5948 | return 0; | |
5949 | ||
529cad9c PH |
5950 | for (i=0; decoded_name[i] != '\0'; i++) |
5951 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5952 | return 0; | |
5953 | ||
5954 | return 1; | |
5955 | } | |
5956 | ||
59c8a30b JB |
5957 | /* Advance *NAMEP to next occurrence in the string NAME0 of the TARGET0 |
5958 | character which could start a simple name. Assumes that *NAMEP points | |
5959 | somewhere inside the string beginning at NAME0. */ | |
4c4b4cd2 | 5960 | |
14f9c5c9 | 5961 | static int |
59c8a30b | 5962 | advance_wild_match (const char **namep, const char *name0, char target0) |
14f9c5c9 | 5963 | { |
73589123 | 5964 | const char *name = *namep; |
5b4ee69b | 5965 | |
5823c3ef | 5966 | while (1) |
14f9c5c9 | 5967 | { |
59c8a30b | 5968 | char t0, t1; |
73589123 PH |
5969 | |
5970 | t0 = *name; | |
5971 | if (t0 == '_') | |
5972 | { | |
5973 | t1 = name[1]; | |
5974 | if ((t1 >= 'a' && t1 <= 'z') || (t1 >= '0' && t1 <= '9')) | |
5975 | { | |
5976 | name += 1; | |
61012eef | 5977 | if (name == name0 + 5 && startswith (name0, "_ada")) |
73589123 PH |
5978 | break; |
5979 | else | |
5980 | name += 1; | |
5981 | } | |
aa27d0b3 JB |
5982 | else if (t1 == '_' && ((name[2] >= 'a' && name[2] <= 'z') |
5983 | || name[2] == target0)) | |
73589123 PH |
5984 | { |
5985 | name += 2; | |
5986 | break; | |
5987 | } | |
86b44259 TT |
5988 | else if (t1 == '_' && name[2] == 'B' && name[3] == '_') |
5989 | { | |
5990 | /* Names like "pkg__B_N__name", where N is a number, are | |
5991 | block-local. We can handle these by simply skipping | |
5992 | the "B_" here. */ | |
5993 | name += 4; | |
5994 | } | |
73589123 PH |
5995 | else |
5996 | return 0; | |
5997 | } | |
5998 | else if ((t0 >= 'a' && t0 <= 'z') || (t0 >= '0' && t0 <= '9')) | |
5999 | name += 1; | |
6000 | else | |
5823c3ef | 6001 | return 0; |
73589123 PH |
6002 | } |
6003 | ||
6004 | *namep = name; | |
6005 | return 1; | |
6006 | } | |
6007 | ||
b5ec771e PA |
6008 | /* Return true iff NAME encodes a name of the form prefix.PATN. |
6009 | Ignores any informational suffixes of NAME (i.e., for which | |
6010 | is_name_suffix is true). Assumes that PATN is a lower-cased Ada | |
6011 | simple name. */ | |
73589123 | 6012 | |
b5ec771e | 6013 | static bool |
73589123 PH |
6014 | wild_match (const char *name, const char *patn) |
6015 | { | |
22e048c9 | 6016 | const char *p; |
73589123 PH |
6017 | const char *name0 = name; |
6018 | ||
6019 | while (1) | |
6020 | { | |
6021 | const char *match = name; | |
6022 | ||
6023 | if (*name == *patn) | |
6024 | { | |
6025 | for (name += 1, p = patn + 1; *p != '\0'; name += 1, p += 1) | |
6026 | if (*p != *name) | |
6027 | break; | |
6028 | if (*p == '\0' && is_name_suffix (name)) | |
b5ec771e | 6029 | return match == name0 || is_valid_name_for_wild_match (name0); |
73589123 PH |
6030 | |
6031 | if (name[-1] == '_') | |
6032 | name -= 1; | |
6033 | } | |
6034 | if (!advance_wild_match (&name, name0, *patn)) | |
b5ec771e | 6035 | return false; |
96d887e8 | 6036 | } |
96d887e8 PH |
6037 | } |
6038 | ||
d1183b06 | 6039 | /* Add symbols from BLOCK matching LOOKUP_NAME in DOMAIN to RESULT (if |
b5ec771e | 6040 | necessary). OBJFILE is the section containing BLOCK. */ |
96d887e8 PH |
6041 | |
6042 | static void | |
d1183b06 | 6043 | ada_add_block_symbols (std::vector<struct block_symbol> &result, |
b5ec771e PA |
6044 | const struct block *block, |
6045 | const lookup_name_info &lookup_name, | |
6046 | domain_enum domain, struct objfile *objfile) | |
96d887e8 | 6047 | { |
8157b174 | 6048 | struct block_iterator iter; |
96d887e8 PH |
6049 | /* A matching argument symbol, if any. */ |
6050 | struct symbol *arg_sym; | |
6051 | /* Set true when we find a matching non-argument symbol. */ | |
1178743e | 6052 | bool found_sym; |
96d887e8 PH |
6053 | struct symbol *sym; |
6054 | ||
6055 | arg_sym = NULL; | |
1178743e | 6056 | found_sym = false; |
b5ec771e PA |
6057 | for (sym = block_iter_match_first (block, lookup_name, &iter); |
6058 | sym != NULL; | |
6059 | sym = block_iter_match_next (lookup_name, &iter)) | |
96d887e8 | 6060 | { |
6c9c307c | 6061 | if (symbol_matches_domain (sym->language (), sym->domain (), domain)) |
b5ec771e | 6062 | { |
66d7f48f | 6063 | if (sym->aclass () != LOC_UNRESOLVED) |
b5ec771e | 6064 | { |
d9743061 | 6065 | if (sym->is_argument ()) |
b5ec771e PA |
6066 | arg_sym = sym; |
6067 | else | |
6068 | { | |
1178743e | 6069 | found_sym = true; |
d1183b06 | 6070 | add_defn_to_vec (result, |
b5ec771e PA |
6071 | fixup_symbol_section (sym, objfile), |
6072 | block); | |
6073 | } | |
6074 | } | |
6075 | } | |
96d887e8 PH |
6076 | } |
6077 | ||
22cee43f PMR |
6078 | /* Handle renamings. */ |
6079 | ||
d1183b06 | 6080 | if (ada_add_block_renamings (result, block, lookup_name, domain)) |
1178743e | 6081 | found_sym = true; |
22cee43f | 6082 | |
96d887e8 PH |
6083 | if (!found_sym && arg_sym != NULL) |
6084 | { | |
d1183b06 | 6085 | add_defn_to_vec (result, |
dda83cd7 SM |
6086 | fixup_symbol_section (arg_sym, objfile), |
6087 | block); | |
96d887e8 PH |
6088 | } |
6089 | ||
b5ec771e | 6090 | if (!lookup_name.ada ().wild_match_p ()) |
96d887e8 PH |
6091 | { |
6092 | arg_sym = NULL; | |
1178743e | 6093 | found_sym = false; |
b5ec771e PA |
6094 | const std::string &ada_lookup_name = lookup_name.ada ().lookup_name (); |
6095 | const char *name = ada_lookup_name.c_str (); | |
6096 | size_t name_len = ada_lookup_name.size (); | |
96d887e8 PH |
6097 | |
6098 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 6099 | { |
dda83cd7 | 6100 | if (symbol_matches_domain (sym->language (), |
6c9c307c | 6101 | sym->domain (), domain)) |
dda83cd7 SM |
6102 | { |
6103 | int cmp; | |
6104 | ||
6105 | cmp = (int) '_' - (int) sym->linkage_name ()[0]; | |
6106 | if (cmp == 0) | |
6107 | { | |
6108 | cmp = !startswith (sym->linkage_name (), "_ada_"); | |
6109 | if (cmp == 0) | |
6110 | cmp = strncmp (name, sym->linkage_name () + 5, | |
6111 | name_len); | |
6112 | } | |
6113 | ||
6114 | if (cmp == 0 | |
6115 | && is_name_suffix (sym->linkage_name () + name_len + 5)) | |
6116 | { | |
66d7f48f | 6117 | if (sym->aclass () != LOC_UNRESOLVED) |
2a2d4dc3 | 6118 | { |
d9743061 | 6119 | if (sym->is_argument ()) |
2a2d4dc3 AS |
6120 | arg_sym = sym; |
6121 | else | |
6122 | { | |
1178743e | 6123 | found_sym = true; |
d1183b06 | 6124 | add_defn_to_vec (result, |
2a2d4dc3 AS |
6125 | fixup_symbol_section (sym, objfile), |
6126 | block); | |
6127 | } | |
6128 | } | |
dda83cd7 SM |
6129 | } |
6130 | } | |
76a01679 | 6131 | } |
96d887e8 PH |
6132 | |
6133 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
dda83cd7 | 6134 | They aren't parameters, right? */ |
96d887e8 | 6135 | if (!found_sym && arg_sym != NULL) |
dda83cd7 | 6136 | { |
d1183b06 | 6137 | add_defn_to_vec (result, |
dda83cd7 SM |
6138 | fixup_symbol_section (arg_sym, objfile), |
6139 | block); | |
6140 | } | |
96d887e8 PH |
6141 | } |
6142 | } | |
6143 | \f | |
41d27058 | 6144 | |
dda83cd7 | 6145 | /* Symbol Completion */ |
41d27058 | 6146 | |
b5ec771e | 6147 | /* See symtab.h. */ |
41d27058 | 6148 | |
b5ec771e PA |
6149 | bool |
6150 | ada_lookup_name_info::matches | |
6151 | (const char *sym_name, | |
6152 | symbol_name_match_type match_type, | |
a207cff2 | 6153 | completion_match_result *comp_match_res) const |
41d27058 | 6154 | { |
b5ec771e PA |
6155 | bool match = false; |
6156 | const char *text = m_encoded_name.c_str (); | |
6157 | size_t text_len = m_encoded_name.size (); | |
41d27058 JB |
6158 | |
6159 | /* First, test against the fully qualified name of the symbol. */ | |
6160 | ||
6161 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6162 | match = true; |
41d27058 | 6163 | |
f945dedf | 6164 | std::string decoded_name = ada_decode (sym_name); |
b5ec771e | 6165 | if (match && !m_encoded_p) |
41d27058 JB |
6166 | { |
6167 | /* One needed check before declaring a positive match is to verify | |
dda83cd7 SM |
6168 | that iff we are doing a verbatim match, the decoded version |
6169 | of the symbol name starts with '<'. Otherwise, this symbol name | |
6170 | is not a suitable completion. */ | |
41d27058 | 6171 | |
f945dedf | 6172 | bool has_angle_bracket = (decoded_name[0] == '<'); |
b5ec771e | 6173 | match = (has_angle_bracket == m_verbatim_p); |
41d27058 JB |
6174 | } |
6175 | ||
b5ec771e | 6176 | if (match && !m_verbatim_p) |
41d27058 JB |
6177 | { |
6178 | /* When doing non-verbatim match, another check that needs to | |
dda83cd7 SM |
6179 | be done is to verify that the potentially matching symbol name |
6180 | does not include capital letters, because the ada-mode would | |
6181 | not be able to understand these symbol names without the | |
6182 | angle bracket notation. */ | |
41d27058 JB |
6183 | const char *tmp; |
6184 | ||
6185 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
6186 | if (*tmp != '\0') | |
b5ec771e | 6187 | match = false; |
41d27058 JB |
6188 | } |
6189 | ||
6190 | /* Second: Try wild matching... */ | |
6191 | ||
b5ec771e | 6192 | if (!match && m_wild_match_p) |
41d27058 JB |
6193 | { |
6194 | /* Since we are doing wild matching, this means that TEXT | |
dda83cd7 SM |
6195 | may represent an unqualified symbol name. We therefore must |
6196 | also compare TEXT against the unqualified name of the symbol. */ | |
f945dedf | 6197 | sym_name = ada_unqualified_name (decoded_name.c_str ()); |
41d27058 JB |
6198 | |
6199 | if (strncmp (sym_name, text, text_len) == 0) | |
b5ec771e | 6200 | match = true; |
41d27058 JB |
6201 | } |
6202 | ||
b5ec771e | 6203 | /* Finally: If we found a match, prepare the result to return. */ |
41d27058 JB |
6204 | |
6205 | if (!match) | |
b5ec771e | 6206 | return false; |
41d27058 | 6207 | |
a207cff2 | 6208 | if (comp_match_res != NULL) |
b5ec771e | 6209 | { |
a207cff2 | 6210 | std::string &match_str = comp_match_res->match.storage (); |
41d27058 | 6211 | |
b5ec771e | 6212 | if (!m_encoded_p) |
a207cff2 | 6213 | match_str = ada_decode (sym_name); |
b5ec771e PA |
6214 | else |
6215 | { | |
6216 | if (m_verbatim_p) | |
6217 | match_str = add_angle_brackets (sym_name); | |
6218 | else | |
6219 | match_str = sym_name; | |
41d27058 | 6220 | |
b5ec771e | 6221 | } |
a207cff2 PA |
6222 | |
6223 | comp_match_res->set_match (match_str.c_str ()); | |
41d27058 JB |
6224 | } |
6225 | ||
b5ec771e | 6226 | return true; |
41d27058 JB |
6227 | } |
6228 | ||
dda83cd7 | 6229 | /* Field Access */ |
96d887e8 | 6230 | |
73fb9985 JB |
6231 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
6232 | for tagged types. */ | |
6233 | ||
6234 | static int | |
6235 | ada_is_dispatch_table_ptr_type (struct type *type) | |
6236 | { | |
0d5cff50 | 6237 | const char *name; |
73fb9985 | 6238 | |
78134374 | 6239 | if (type->code () != TYPE_CODE_PTR) |
73fb9985 JB |
6240 | return 0; |
6241 | ||
7d93a1e0 | 6242 | name = TYPE_TARGET_TYPE (type)->name (); |
73fb9985 JB |
6243 | if (name == NULL) |
6244 | return 0; | |
6245 | ||
6246 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
6247 | } | |
6248 | ||
ac4a2da4 JG |
6249 | /* Return non-zero if TYPE is an interface tag. */ |
6250 | ||
6251 | static int | |
6252 | ada_is_interface_tag (struct type *type) | |
6253 | { | |
7d93a1e0 | 6254 | const char *name = type->name (); |
ac4a2da4 JG |
6255 | |
6256 | if (name == NULL) | |
6257 | return 0; | |
6258 | ||
6259 | return (strcmp (name, "ada__tags__interface_tag") == 0); | |
6260 | } | |
6261 | ||
963a6417 PH |
6262 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
6263 | to be invisible to users. */ | |
96d887e8 | 6264 | |
963a6417 PH |
6265 | int |
6266 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 6267 | { |
1f704f76 | 6268 | if (field_num < 0 || field_num > type->num_fields ()) |
963a6417 | 6269 | return 1; |
ffde82bf | 6270 | |
73fb9985 JB |
6271 | /* Check the name of that field. */ |
6272 | { | |
33d16dd9 | 6273 | const char *name = type->field (field_num).name (); |
73fb9985 JB |
6274 | |
6275 | /* Anonymous field names should not be printed. | |
6276 | brobecker/2007-02-20: I don't think this can actually happen | |
30baf67b | 6277 | but we don't want to print the value of anonymous fields anyway. */ |
73fb9985 JB |
6278 | if (name == NULL) |
6279 | return 1; | |
6280 | ||
ffde82bf JB |
6281 | /* Normally, fields whose name start with an underscore ("_") |
6282 | are fields that have been internally generated by the compiler, | |
6283 | and thus should not be printed. The "_parent" field is special, | |
6284 | however: This is a field internally generated by the compiler | |
6285 | for tagged types, and it contains the components inherited from | |
6286 | the parent type. This field should not be printed as is, but | |
6287 | should not be ignored either. */ | |
61012eef | 6288 | if (name[0] == '_' && !startswith (name, "_parent")) |
73fb9985 JB |
6289 | return 1; |
6290 | } | |
6291 | ||
ac4a2da4 JG |
6292 | /* If this is the dispatch table of a tagged type or an interface tag, |
6293 | then ignore. */ | |
73fb9985 | 6294 | if (ada_is_tagged_type (type, 1) |
940da03e SM |
6295 | && (ada_is_dispatch_table_ptr_type (type->field (field_num).type ()) |
6296 | || ada_is_interface_tag (type->field (field_num).type ()))) | |
73fb9985 JB |
6297 | return 1; |
6298 | ||
6299 | /* Not a special field, so it should not be ignored. */ | |
6300 | return 0; | |
963a6417 | 6301 | } |
96d887e8 | 6302 | |
963a6417 | 6303 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
0963b4bd | 6304 | pointer or reference type whose ultimate target has a tag field. */ |
96d887e8 | 6305 | |
963a6417 PH |
6306 | int |
6307 | ada_is_tagged_type (struct type *type, int refok) | |
6308 | { | |
988f6b3d | 6309 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1) != NULL); |
963a6417 | 6310 | } |
96d887e8 | 6311 | |
963a6417 | 6312 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 6313 | |
963a6417 PH |
6314 | int |
6315 | ada_is_tag_type (struct type *type) | |
6316 | { | |
460efde1 JB |
6317 | type = ada_check_typedef (type); |
6318 | ||
78134374 | 6319 | if (type == NULL || type->code () != TYPE_CODE_PTR) |
963a6417 PH |
6320 | return 0; |
6321 | else | |
96d887e8 | 6322 | { |
963a6417 | 6323 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5b4ee69b | 6324 | |
963a6417 | 6325 | return (name != NULL |
dda83cd7 | 6326 | && strcmp (name, "ada__tags__dispatch_table") == 0); |
96d887e8 | 6327 | } |
96d887e8 PH |
6328 | } |
6329 | ||
963a6417 | 6330 | /* The type of the tag on VAL. */ |
76a01679 | 6331 | |
de93309a | 6332 | static struct type * |
963a6417 | 6333 | ada_tag_type (struct value *val) |
96d887e8 | 6334 | { |
988f6b3d | 6335 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0); |
963a6417 | 6336 | } |
96d887e8 | 6337 | |
b50d69b5 JG |
6338 | /* Return 1 if TAG follows the old scheme for Ada tags (used for Ada 95, |
6339 | retired at Ada 05). */ | |
6340 | ||
6341 | static int | |
6342 | is_ada95_tag (struct value *tag) | |
6343 | { | |
6344 | return ada_value_struct_elt (tag, "tsd", 1) != NULL; | |
6345 | } | |
6346 | ||
963a6417 | 6347 | /* The value of the tag on VAL. */ |
96d887e8 | 6348 | |
de93309a | 6349 | static struct value * |
963a6417 PH |
6350 | ada_value_tag (struct value *val) |
6351 | { | |
03ee6b2e | 6352 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
6353 | } |
6354 | ||
963a6417 PH |
6355 | /* The value of the tag on the object of type TYPE whose contents are |
6356 | saved at VALADDR, if it is non-null, or is at memory address | |
0963b4bd | 6357 | ADDRESS. */ |
96d887e8 | 6358 | |
963a6417 | 6359 | static struct value * |
10a2c479 | 6360 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 6361 | const gdb_byte *valaddr, |
dda83cd7 | 6362 | CORE_ADDR address) |
96d887e8 | 6363 | { |
b5385fc0 | 6364 | int tag_byte_offset; |
963a6417 | 6365 | struct type *tag_type; |
5b4ee69b | 6366 | |
4d1795ac TT |
6367 | gdb::array_view<const gdb_byte> contents; |
6368 | if (valaddr != nullptr) | |
6369 | contents = gdb::make_array_view (valaddr, TYPE_LENGTH (type)); | |
6370 | struct type *resolved_type = resolve_dynamic_type (type, contents, address); | |
6371 | if (find_struct_field ("_tag", resolved_type, 0, &tag_type, &tag_byte_offset, | |
dda83cd7 | 6372 | NULL, NULL, NULL)) |
96d887e8 | 6373 | { |
fc1a4b47 | 6374 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
6375 | ? NULL |
6376 | : valaddr + tag_byte_offset); | |
963a6417 | 6377 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 6378 | |
963a6417 | 6379 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 6380 | } |
963a6417 PH |
6381 | return NULL; |
6382 | } | |
96d887e8 | 6383 | |
963a6417 PH |
6384 | static struct type * |
6385 | type_from_tag (struct value *tag) | |
6386 | { | |
f5272a3b | 6387 | gdb::unique_xmalloc_ptr<char> type_name = ada_tag_name (tag); |
5b4ee69b | 6388 | |
963a6417 | 6389 | if (type_name != NULL) |
5c4258f4 | 6390 | return ada_find_any_type (ada_encode (type_name.get ()).c_str ()); |
963a6417 PH |
6391 | return NULL; |
6392 | } | |
96d887e8 | 6393 | |
b50d69b5 JG |
6394 | /* Given a value OBJ of a tagged type, return a value of this |
6395 | type at the base address of the object. The base address, as | |
6396 | defined in Ada.Tags, it is the address of the primary tag of | |
6397 | the object, and therefore where the field values of its full | |
6398 | view can be fetched. */ | |
6399 | ||
6400 | struct value * | |
6401 | ada_tag_value_at_base_address (struct value *obj) | |
6402 | { | |
b50d69b5 JG |
6403 | struct value *val; |
6404 | LONGEST offset_to_top = 0; | |
6405 | struct type *ptr_type, *obj_type; | |
6406 | struct value *tag; | |
6407 | CORE_ADDR base_address; | |
6408 | ||
6409 | obj_type = value_type (obj); | |
6410 | ||
6411 | /* It is the responsability of the caller to deref pointers. */ | |
6412 | ||
78134374 | 6413 | if (obj_type->code () == TYPE_CODE_PTR || obj_type->code () == TYPE_CODE_REF) |
b50d69b5 JG |
6414 | return obj; |
6415 | ||
6416 | tag = ada_value_tag (obj); | |
6417 | if (!tag) | |
6418 | return obj; | |
6419 | ||
6420 | /* Base addresses only appeared with Ada 05 and multiple inheritance. */ | |
6421 | ||
6422 | if (is_ada95_tag (tag)) | |
6423 | return obj; | |
6424 | ||
08f49010 XR |
6425 | ptr_type = language_lookup_primitive_type |
6426 | (language_def (language_ada), target_gdbarch(), "storage_offset"); | |
b50d69b5 JG |
6427 | ptr_type = lookup_pointer_type (ptr_type); |
6428 | val = value_cast (ptr_type, tag); | |
6429 | if (!val) | |
6430 | return obj; | |
6431 | ||
6432 | /* It is perfectly possible that an exception be raised while | |
6433 | trying to determine the base address, just like for the tag; | |
6434 | see ada_tag_name for more details. We do not print the error | |
6435 | message for the same reason. */ | |
6436 | ||
a70b8144 | 6437 | try |
b50d69b5 JG |
6438 | { |
6439 | offset_to_top = value_as_long (value_ind (value_ptradd (val, -2))); | |
6440 | } | |
6441 | ||
230d2906 | 6442 | catch (const gdb_exception_error &e) |
492d29ea PA |
6443 | { |
6444 | return obj; | |
6445 | } | |
b50d69b5 JG |
6446 | |
6447 | /* If offset is null, nothing to do. */ | |
6448 | ||
6449 | if (offset_to_top == 0) | |
6450 | return obj; | |
6451 | ||
6452 | /* -1 is a special case in Ada.Tags; however, what should be done | |
6453 | is not quite clear from the documentation. So do nothing for | |
6454 | now. */ | |
6455 | ||
6456 | if (offset_to_top == -1) | |
6457 | return obj; | |
6458 | ||
08f49010 XR |
6459 | /* OFFSET_TO_TOP used to be a positive value to be subtracted |
6460 | from the base address. This was however incompatible with | |
6461 | C++ dispatch table: C++ uses a *negative* value to *add* | |
6462 | to the base address. Ada's convention has therefore been | |
6463 | changed in GNAT 19.0w 20171023: since then, C++ and Ada | |
6464 | use the same convention. Here, we support both cases by | |
6465 | checking the sign of OFFSET_TO_TOP. */ | |
6466 | ||
6467 | if (offset_to_top > 0) | |
6468 | offset_to_top = -offset_to_top; | |
6469 | ||
6470 | base_address = value_address (obj) + offset_to_top; | |
b50d69b5 JG |
6471 | tag = value_tag_from_contents_and_address (obj_type, NULL, base_address); |
6472 | ||
6473 | /* Make sure that we have a proper tag at the new address. | |
6474 | Otherwise, offset_to_top is bogus (which can happen when | |
6475 | the object is not initialized yet). */ | |
6476 | ||
6477 | if (!tag) | |
6478 | return obj; | |
6479 | ||
6480 | obj_type = type_from_tag (tag); | |
6481 | ||
6482 | if (!obj_type) | |
6483 | return obj; | |
6484 | ||
6485 | return value_from_contents_and_address (obj_type, NULL, base_address); | |
6486 | } | |
6487 | ||
1b611343 JB |
6488 | /* Return the "ada__tags__type_specific_data" type. */ |
6489 | ||
6490 | static struct type * | |
6491 | ada_get_tsd_type (struct inferior *inf) | |
963a6417 | 6492 | { |
1b611343 | 6493 | struct ada_inferior_data *data = get_ada_inferior_data (inf); |
4c4b4cd2 | 6494 | |
1b611343 JB |
6495 | if (data->tsd_type == 0) |
6496 | data->tsd_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
6497 | return data->tsd_type; | |
6498 | } | |
529cad9c | 6499 | |
1b611343 JB |
6500 | /* Return the TSD (type-specific data) associated to the given TAG. |
6501 | TAG is assumed to be the tag of a tagged-type entity. | |
529cad9c | 6502 | |
1b611343 | 6503 | May return NULL if we are unable to get the TSD. */ |
4c4b4cd2 | 6504 | |
1b611343 JB |
6505 | static struct value * |
6506 | ada_get_tsd_from_tag (struct value *tag) | |
4c4b4cd2 | 6507 | { |
4c4b4cd2 | 6508 | struct value *val; |
1b611343 | 6509 | struct type *type; |
5b4ee69b | 6510 | |
1b611343 JB |
6511 | /* First option: The TSD is simply stored as a field of our TAG. |
6512 | Only older versions of GNAT would use this format, but we have | |
6513 | to test it first, because there are no visible markers for | |
6514 | the current approach except the absence of that field. */ | |
529cad9c | 6515 | |
1b611343 JB |
6516 | val = ada_value_struct_elt (tag, "tsd", 1); |
6517 | if (val) | |
6518 | return val; | |
e802dbe0 | 6519 | |
1b611343 JB |
6520 | /* Try the second representation for the dispatch table (in which |
6521 | there is no explicit 'tsd' field in the referent of the tag pointer, | |
6522 | and instead the tsd pointer is stored just before the dispatch | |
6523 | table. */ | |
e802dbe0 | 6524 | |
1b611343 JB |
6525 | type = ada_get_tsd_type (current_inferior()); |
6526 | if (type == NULL) | |
6527 | return NULL; | |
6528 | type = lookup_pointer_type (lookup_pointer_type (type)); | |
6529 | val = value_cast (type, tag); | |
6530 | if (val == NULL) | |
6531 | return NULL; | |
6532 | return value_ind (value_ptradd (val, -1)); | |
e802dbe0 JB |
6533 | } |
6534 | ||
1b611343 JB |
6535 | /* Given the TSD of a tag (type-specific data), return a string |
6536 | containing the name of the associated type. | |
6537 | ||
f5272a3b | 6538 | May return NULL if we are unable to determine the tag name. */ |
1b611343 | 6539 | |
f5272a3b | 6540 | static gdb::unique_xmalloc_ptr<char> |
1b611343 | 6541 | ada_tag_name_from_tsd (struct value *tsd) |
529cad9c | 6542 | { |
1b611343 | 6543 | struct value *val; |
529cad9c | 6544 | |
1b611343 | 6545 | val = ada_value_struct_elt (tsd, "expanded_name", 1); |
4c4b4cd2 | 6546 | if (val == NULL) |
1b611343 | 6547 | return NULL; |
66920317 TT |
6548 | gdb::unique_xmalloc_ptr<char> buffer |
6549 | = target_read_string (value_as_address (val), INT_MAX); | |
6550 | if (buffer == nullptr) | |
f5272a3b TT |
6551 | return nullptr; |
6552 | ||
315e4ebb | 6553 | try |
f5272a3b | 6554 | { |
315e4ebb TT |
6555 | /* Let this throw an exception on error. If the data is |
6556 | uninitialized, we'd rather not have the user see a | |
6557 | warning. */ | |
6558 | const char *folded = ada_fold_name (buffer.get (), true); | |
6559 | return make_unique_xstrdup (folded); | |
6560 | } | |
6561 | catch (const gdb_exception &) | |
6562 | { | |
6563 | return nullptr; | |
f5272a3b | 6564 | } |
4c4b4cd2 PH |
6565 | } |
6566 | ||
6567 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
1b611343 JB |
6568 | a C string. |
6569 | ||
6570 | Return NULL if the TAG is not an Ada tag, or if we were unable to | |
f5272a3b | 6571 | determine the name of that tag. */ |
4c4b4cd2 | 6572 | |
f5272a3b | 6573 | gdb::unique_xmalloc_ptr<char> |
4c4b4cd2 PH |
6574 | ada_tag_name (struct value *tag) |
6575 | { | |
f5272a3b | 6576 | gdb::unique_xmalloc_ptr<char> name; |
5b4ee69b | 6577 | |
df407dfe | 6578 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 6579 | return NULL; |
1b611343 JB |
6580 | |
6581 | /* It is perfectly possible that an exception be raised while trying | |
6582 | to determine the TAG's name, even under normal circumstances: | |
6583 | The associated variable may be uninitialized or corrupted, for | |
6584 | instance. We do not let any exception propagate past this point. | |
6585 | instead we return NULL. | |
6586 | ||
6587 | We also do not print the error message either (which often is very | |
6588 | low-level (Eg: "Cannot read memory at 0x[...]"), but instead let | |
6589 | the caller print a more meaningful message if necessary. */ | |
a70b8144 | 6590 | try |
1b611343 JB |
6591 | { |
6592 | struct value *tsd = ada_get_tsd_from_tag (tag); | |
6593 | ||
6594 | if (tsd != NULL) | |
6595 | name = ada_tag_name_from_tsd (tsd); | |
6596 | } | |
230d2906 | 6597 | catch (const gdb_exception_error &e) |
492d29ea PA |
6598 | { |
6599 | } | |
1b611343 JB |
6600 | |
6601 | return name; | |
4c4b4cd2 PH |
6602 | } |
6603 | ||
6604 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 6605 | |
d2e4a39e | 6606 | struct type * |
ebf56fd3 | 6607 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
6608 | { |
6609 | int i; | |
6610 | ||
61ee279c | 6611 | type = ada_check_typedef (type); |
14f9c5c9 | 6612 | |
78134374 | 6613 | if (type == NULL || type->code () != TYPE_CODE_STRUCT) |
14f9c5c9 AS |
6614 | return NULL; |
6615 | ||
1f704f76 | 6616 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 6617 | if (ada_is_parent_field (type, i)) |
0c1f74cf | 6618 | { |
dda83cd7 | 6619 | struct type *parent_type = type->field (i).type (); |
0c1f74cf | 6620 | |
dda83cd7 SM |
6621 | /* If the _parent field is a pointer, then dereference it. */ |
6622 | if (parent_type->code () == TYPE_CODE_PTR) | |
6623 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
6624 | /* If there is a parallel XVS type, get the actual base type. */ | |
6625 | parent_type = ada_get_base_type (parent_type); | |
0c1f74cf | 6626 | |
dda83cd7 | 6627 | return ada_check_typedef (parent_type); |
0c1f74cf | 6628 | } |
14f9c5c9 AS |
6629 | |
6630 | return NULL; | |
6631 | } | |
6632 | ||
4c4b4cd2 PH |
6633 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
6634 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
6635 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6636 | |
6637 | int | |
ebf56fd3 | 6638 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 6639 | { |
33d16dd9 | 6640 | const char *name = ada_check_typedef (type)->field (field_num).name (); |
5b4ee69b | 6641 | |
4c4b4cd2 | 6642 | return (name != NULL |
dda83cd7 SM |
6643 | && (startswith (name, "PARENT") |
6644 | || startswith (name, "_parent"))); | |
14f9c5c9 AS |
6645 | } |
6646 | ||
4c4b4cd2 | 6647 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 6648 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 6649 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 6650 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 6651 | structures. */ |
14f9c5c9 AS |
6652 | |
6653 | int | |
ebf56fd3 | 6654 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 6655 | { |
33d16dd9 | 6656 | const char *name = type->field (field_num).name (); |
5b4ee69b | 6657 | |
dddc0e16 JB |
6658 | if (name != NULL && strcmp (name, "RETVAL") == 0) |
6659 | { | |
6660 | /* This happens in functions with "out" or "in out" parameters | |
6661 | which are passed by copy. For such functions, GNAT describes | |
6662 | the function's return type as being a struct where the return | |
6663 | value is in a field called RETVAL, and where the other "out" | |
6664 | or "in out" parameters are fields of that struct. This is not | |
6665 | a wrapper. */ | |
6666 | return 0; | |
6667 | } | |
6668 | ||
d2e4a39e | 6669 | return (name != NULL |
dda83cd7 SM |
6670 | && (startswith (name, "PARENT") |
6671 | || strcmp (name, "REP") == 0 | |
6672 | || startswith (name, "_parent") | |
6673 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
6674 | } |
6675 | ||
4c4b4cd2 PH |
6676 | /* True iff field number FIELD_NUM of structure or union type TYPE |
6677 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
6678 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6679 | |
6680 | int | |
ebf56fd3 | 6681 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 6682 | { |
8ecb59f8 TT |
6683 | /* Only Ada types are eligible. */ |
6684 | if (!ADA_TYPE_P (type)) | |
6685 | return 0; | |
6686 | ||
940da03e | 6687 | struct type *field_type = type->field (field_num).type (); |
5b4ee69b | 6688 | |
78134374 SM |
6689 | return (field_type->code () == TYPE_CODE_UNION |
6690 | || (is_dynamic_field (type, field_num) | |
6691 | && (TYPE_TARGET_TYPE (field_type)->code () | |
c3e5cd34 | 6692 | == TYPE_CODE_UNION))); |
14f9c5c9 AS |
6693 | } |
6694 | ||
6695 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 6696 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
6697 | returns the type of the controlling discriminant for the variant. |
6698 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 6699 | |
d2e4a39e | 6700 | struct type * |
ebf56fd3 | 6701 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 6702 | { |
a121b7c1 | 6703 | const char *name = ada_variant_discrim_name (var_type); |
5b4ee69b | 6704 | |
988f6b3d | 6705 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1); |
14f9c5c9 AS |
6706 | } |
6707 | ||
4c4b4cd2 | 6708 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 6709 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 6710 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 | 6711 | |
de93309a | 6712 | static int |
ebf56fd3 | 6713 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 6714 | { |
33d16dd9 | 6715 | const char *name = type->field (field_num).name (); |
5b4ee69b | 6716 | |
14f9c5c9 AS |
6717 | return (name != NULL && name[0] == 'O'); |
6718 | } | |
6719 | ||
6720 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
6721 | returns the name of the discriminant controlling the variant. |
6722 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 6723 | |
a121b7c1 | 6724 | const char * |
ebf56fd3 | 6725 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 6726 | { |
5f9febe0 | 6727 | static std::string result; |
d2e4a39e AS |
6728 | struct type *type; |
6729 | const char *name; | |
6730 | const char *discrim_end; | |
6731 | const char *discrim_start; | |
14f9c5c9 | 6732 | |
78134374 | 6733 | if (type0->code () == TYPE_CODE_PTR) |
14f9c5c9 AS |
6734 | type = TYPE_TARGET_TYPE (type0); |
6735 | else | |
6736 | type = type0; | |
6737 | ||
6738 | name = ada_type_name (type); | |
6739 | ||
6740 | if (name == NULL || name[0] == '\000') | |
6741 | return ""; | |
6742 | ||
6743 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
6744 | discrim_end -= 1) | |
6745 | { | |
61012eef | 6746 | if (startswith (discrim_end, "___XVN")) |
dda83cd7 | 6747 | break; |
14f9c5c9 AS |
6748 | } |
6749 | if (discrim_end == name) | |
6750 | return ""; | |
6751 | ||
d2e4a39e | 6752 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
6753 | discrim_start -= 1) |
6754 | { | |
d2e4a39e | 6755 | if (discrim_start == name + 1) |
dda83cd7 | 6756 | return ""; |
76a01679 | 6757 | if ((discrim_start > name + 3 |
dda83cd7 SM |
6758 | && startswith (discrim_start - 3, "___")) |
6759 | || discrim_start[-1] == '.') | |
6760 | break; | |
14f9c5c9 AS |
6761 | } |
6762 | ||
5f9febe0 TT |
6763 | result = std::string (discrim_start, discrim_end - discrim_start); |
6764 | return result.c_str (); | |
14f9c5c9 AS |
6765 | } |
6766 | ||
4c4b4cd2 PH |
6767 | /* Scan STR for a subtype-encoded number, beginning at position K. |
6768 | Put the position of the character just past the number scanned in | |
6769 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
6770 | Return 1 if there was a valid number at the given position, and 0 | |
6771 | otherwise. A "subtype-encoded" number consists of the absolute value | |
6772 | in decimal, followed by the letter 'm' to indicate a negative number. | |
6773 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
6774 | |
6775 | int | |
d2e4a39e | 6776 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
6777 | { |
6778 | ULONGEST RU; | |
6779 | ||
d2e4a39e | 6780 | if (!isdigit (str[k])) |
14f9c5c9 AS |
6781 | return 0; |
6782 | ||
4c4b4cd2 | 6783 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 6784 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 6785 | LONGEST. */ |
14f9c5c9 AS |
6786 | RU = 0; |
6787 | while (isdigit (str[k])) | |
6788 | { | |
d2e4a39e | 6789 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
6790 | k += 1; |
6791 | } | |
6792 | ||
d2e4a39e | 6793 | if (str[k] == 'm') |
14f9c5c9 AS |
6794 | { |
6795 | if (R != NULL) | |
dda83cd7 | 6796 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
6797 | k += 1; |
6798 | } | |
6799 | else if (R != NULL) | |
6800 | *R = (LONGEST) RU; | |
6801 | ||
4c4b4cd2 | 6802 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
6803 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
6804 | number representable as a LONGEST (although either would probably work | |
6805 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 6806 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
6807 | |
6808 | if (new_k != NULL) | |
6809 | *new_k = k; | |
6810 | return 1; | |
6811 | } | |
6812 | ||
4c4b4cd2 PH |
6813 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
6814 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
6815 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 6816 | |
de93309a | 6817 | static int |
ebf56fd3 | 6818 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 6819 | { |
33d16dd9 | 6820 | const char *name = type->field (field_num).name (); |
14f9c5c9 AS |
6821 | int p; |
6822 | ||
6823 | p = 0; | |
6824 | while (1) | |
6825 | { | |
d2e4a39e | 6826 | switch (name[p]) |
dda83cd7 SM |
6827 | { |
6828 | case '\0': | |
6829 | return 0; | |
6830 | case 'S': | |
6831 | { | |
6832 | LONGEST W; | |
6833 | ||
6834 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
6835 | return 0; | |
6836 | if (val == W) | |
6837 | return 1; | |
6838 | break; | |
6839 | } | |
6840 | case 'R': | |
6841 | { | |
6842 | LONGEST L, U; | |
6843 | ||
6844 | if (!ada_scan_number (name, p + 1, &L, &p) | |
6845 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
6846 | return 0; | |
6847 | if (val >= L && val <= U) | |
6848 | return 1; | |
6849 | break; | |
6850 | } | |
6851 | case 'O': | |
6852 | return 1; | |
6853 | default: | |
6854 | return 0; | |
6855 | } | |
4c4b4cd2 PH |
6856 | } |
6857 | } | |
6858 | ||
0963b4bd | 6859 | /* FIXME: Lots of redundancy below. Try to consolidate. */ |
4c4b4cd2 PH |
6860 | |
6861 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
6862 | ARG_TYPE, extract and return the value of one of its (non-static) | |
6863 | fields. FIELDNO says which field. Differs from value_primitive_field | |
6864 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 6865 | |
5eb68a39 | 6866 | struct value * |
d2e4a39e | 6867 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
dda83cd7 | 6868 | struct type *arg_type) |
14f9c5c9 | 6869 | { |
14f9c5c9 AS |
6870 | struct type *type; |
6871 | ||
61ee279c | 6872 | arg_type = ada_check_typedef (arg_type); |
940da03e | 6873 | type = arg_type->field (fieldno).type (); |
14f9c5c9 | 6874 | |
4504bbde TT |
6875 | /* Handle packed fields. It might be that the field is not packed |
6876 | relative to its containing structure, but the structure itself is | |
6877 | packed; in this case we must take the bit-field path. */ | |
6878 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0 || value_bitpos (arg1) != 0) | |
14f9c5c9 | 6879 | { |
b610c045 | 6880 | int bit_pos = arg_type->field (fieldno).loc_bitpos (); |
14f9c5c9 | 6881 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); |
d2e4a39e | 6882 | |
50888e42 SM |
6883 | return ada_value_primitive_packed_val (arg1, |
6884 | value_contents (arg1).data (), | |
dda83cd7 SM |
6885 | offset + bit_pos / 8, |
6886 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
6887 | } |
6888 | else | |
6889 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
6890 | } | |
6891 | ||
52ce6436 PH |
6892 | /* Find field with name NAME in object of type TYPE. If found, |
6893 | set the following for each argument that is non-null: | |
6894 | - *FIELD_TYPE_P to the field's type; | |
6895 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
6896 | an object of that type; | |
6897 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
6898 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
6899 | 0 otherwise; | |
6900 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
6901 | fields up to but not including the desired field, or by the total | |
6902 | number of fields if not found. A NULL value of NAME never | |
6903 | matches; the function just counts visible fields in this case. | |
6904 | ||
828d5846 XR |
6905 | Notice that we need to handle when a tagged record hierarchy |
6906 | has some components with the same name, like in this scenario: | |
6907 | ||
6908 | type Top_T is tagged record | |
dda83cd7 SM |
6909 | N : Integer := 1; |
6910 | U : Integer := 974; | |
6911 | A : Integer := 48; | |
828d5846 XR |
6912 | end record; |
6913 | ||
6914 | type Middle_T is new Top.Top_T with record | |
dda83cd7 SM |
6915 | N : Character := 'a'; |
6916 | C : Integer := 3; | |
828d5846 XR |
6917 | end record; |
6918 | ||
6919 | type Bottom_T is new Middle.Middle_T with record | |
dda83cd7 SM |
6920 | N : Float := 4.0; |
6921 | C : Character := '5'; | |
6922 | X : Integer := 6; | |
6923 | A : Character := 'J'; | |
828d5846 XR |
6924 | end record; |
6925 | ||
6926 | Let's say we now have a variable declared and initialized as follow: | |
6927 | ||
6928 | TC : Top_A := new Bottom_T; | |
6929 | ||
6930 | And then we use this variable to call this function | |
6931 | ||
6932 | procedure Assign (Obj: in out Top_T; TV : Integer); | |
6933 | ||
6934 | as follow: | |
6935 | ||
6936 | Assign (Top_T (B), 12); | |
6937 | ||
6938 | Now, we're in the debugger, and we're inside that procedure | |
6939 | then and we want to print the value of obj.c: | |
6940 | ||
6941 | Usually, the tagged record or one of the parent type owns the | |
6942 | component to print and there's no issue but in this particular | |
6943 | case, what does it mean to ask for Obj.C? Since the actual | |
6944 | type for object is type Bottom_T, it could mean two things: type | |
6945 | component C from the Middle_T view, but also component C from | |
6946 | Bottom_T. So in that "undefined" case, when the component is | |
6947 | not found in the non-resolved type (which includes all the | |
6948 | components of the parent type), then resolve it and see if we | |
6949 | get better luck once expanded. | |
6950 | ||
6951 | In the case of homonyms in the derived tagged type, we don't | |
6952 | guaranty anything, and pick the one that's easiest for us | |
6953 | to program. | |
6954 | ||
0963b4bd | 6955 | Returns 1 if found, 0 otherwise. */ |
52ce6436 | 6956 | |
4c4b4cd2 | 6957 | static int |
0d5cff50 | 6958 | find_struct_field (const char *name, struct type *type, int offset, |
dda83cd7 SM |
6959 | struct type **field_type_p, |
6960 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, | |
52ce6436 | 6961 | int *index_p) |
4c4b4cd2 PH |
6962 | { |
6963 | int i; | |
828d5846 | 6964 | int parent_offset = -1; |
4c4b4cd2 | 6965 | |
61ee279c | 6966 | type = ada_check_typedef (type); |
76a01679 | 6967 | |
52ce6436 PH |
6968 | if (field_type_p != NULL) |
6969 | *field_type_p = NULL; | |
6970 | if (byte_offset_p != NULL) | |
d5d6fca5 | 6971 | *byte_offset_p = 0; |
52ce6436 PH |
6972 | if (bit_offset_p != NULL) |
6973 | *bit_offset_p = 0; | |
6974 | if (bit_size_p != NULL) | |
6975 | *bit_size_p = 0; | |
6976 | ||
1f704f76 | 6977 | for (i = 0; i < type->num_fields (); i += 1) |
4c4b4cd2 | 6978 | { |
4d1795ac TT |
6979 | /* These can't be computed using TYPE_FIELD_BITPOS for a dynamic |
6980 | type. However, we only need the values to be correct when | |
6981 | the caller asks for them. */ | |
6982 | int bit_pos = 0, fld_offset = 0; | |
6983 | if (byte_offset_p != nullptr || bit_offset_p != nullptr) | |
6984 | { | |
b610c045 | 6985 | bit_pos = type->field (i).loc_bitpos (); |
4d1795ac TT |
6986 | fld_offset = offset + bit_pos / 8; |
6987 | } | |
6988 | ||
33d16dd9 | 6989 | const char *t_field_name = type->field (i).name (); |
76a01679 | 6990 | |
4c4b4cd2 | 6991 | if (t_field_name == NULL) |
dda83cd7 | 6992 | continue; |
4c4b4cd2 | 6993 | |
828d5846 | 6994 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 6995 | { |
828d5846 XR |
6996 | /* This is a field pointing us to the parent type of a tagged |
6997 | type. As hinted in this function's documentation, we give | |
6998 | preference to fields in the current record first, so what | |
6999 | we do here is just record the index of this field before | |
7000 | we skip it. If it turns out we couldn't find our field | |
7001 | in the current record, then we'll get back to it and search | |
7002 | inside it whether the field might exist in the parent. */ | |
7003 | ||
dda83cd7 SM |
7004 | parent_offset = i; |
7005 | continue; | |
7006 | } | |
828d5846 | 7007 | |
52ce6436 | 7008 | else if (name != NULL && field_name_match (t_field_name, name)) |
dda83cd7 SM |
7009 | { |
7010 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5b4ee69b | 7011 | |
52ce6436 | 7012 | if (field_type_p != NULL) |
940da03e | 7013 | *field_type_p = type->field (i).type (); |
52ce6436 PH |
7014 | if (byte_offset_p != NULL) |
7015 | *byte_offset_p = fld_offset; | |
7016 | if (bit_offset_p != NULL) | |
7017 | *bit_offset_p = bit_pos % 8; | |
7018 | if (bit_size_p != NULL) | |
7019 | *bit_size_p = bit_size; | |
dda83cd7 SM |
7020 | return 1; |
7021 | } | |
4c4b4cd2 | 7022 | else if (ada_is_wrapper_field (type, i)) |
dda83cd7 | 7023 | { |
940da03e | 7024 | if (find_struct_field (name, type->field (i).type (), fld_offset, |
52ce6436 PH |
7025 | field_type_p, byte_offset_p, bit_offset_p, |
7026 | bit_size_p, index_p)) | |
dda83cd7 SM |
7027 | return 1; |
7028 | } | |
4c4b4cd2 | 7029 | else if (ada_is_variant_part (type, i)) |
dda83cd7 | 7030 | { |
52ce6436 PH |
7031 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
7032 | fixed type?? */ | |
dda83cd7 SM |
7033 | int j; |
7034 | struct type *field_type | |
940da03e | 7035 | = ada_check_typedef (type->field (i).type ()); |
4c4b4cd2 | 7036 | |
dda83cd7 SM |
7037 | for (j = 0; j < field_type->num_fields (); j += 1) |
7038 | { | |
7039 | if (find_struct_field (name, field_type->field (j).type (), | |
7040 | fld_offset | |
b610c045 | 7041 | + field_type->field (j).loc_bitpos () / 8, |
dda83cd7 SM |
7042 | field_type_p, byte_offset_p, |
7043 | bit_offset_p, bit_size_p, index_p)) | |
7044 | return 1; | |
7045 | } | |
7046 | } | |
52ce6436 PH |
7047 | else if (index_p != NULL) |
7048 | *index_p += 1; | |
4c4b4cd2 | 7049 | } |
828d5846 XR |
7050 | |
7051 | /* Field not found so far. If this is a tagged type which | |
7052 | has a parent, try finding that field in the parent now. */ | |
7053 | ||
7054 | if (parent_offset != -1) | |
7055 | { | |
4d1795ac TT |
7056 | /* As above, only compute the offset when truly needed. */ |
7057 | int fld_offset = offset; | |
7058 | if (byte_offset_p != nullptr || bit_offset_p != nullptr) | |
7059 | { | |
b610c045 | 7060 | int bit_pos = type->field (parent_offset).loc_bitpos (); |
4d1795ac TT |
7061 | fld_offset += bit_pos / 8; |
7062 | } | |
828d5846 | 7063 | |
940da03e | 7064 | if (find_struct_field (name, type->field (parent_offset).type (), |
dda83cd7 SM |
7065 | fld_offset, field_type_p, byte_offset_p, |
7066 | bit_offset_p, bit_size_p, index_p)) | |
7067 | return 1; | |
828d5846 XR |
7068 | } |
7069 | ||
4c4b4cd2 PH |
7070 | return 0; |
7071 | } | |
7072 | ||
0963b4bd | 7073 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 7074 | |
52ce6436 PH |
7075 | static int |
7076 | num_visible_fields (struct type *type) | |
7077 | { | |
7078 | int n; | |
5b4ee69b | 7079 | |
52ce6436 PH |
7080 | n = 0; |
7081 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
7082 | return n; | |
7083 | } | |
14f9c5c9 | 7084 | |
4c4b4cd2 | 7085 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
7086 | and search in it assuming it has (class) type TYPE. |
7087 | If found, return value, else return NULL. | |
7088 | ||
828d5846 XR |
7089 | Searches recursively through wrapper fields (e.g., '_parent'). |
7090 | ||
7091 | In the case of homonyms in the tagged types, please refer to the | |
7092 | long explanation in find_struct_field's function documentation. */ | |
14f9c5c9 | 7093 | |
4c4b4cd2 | 7094 | static struct value * |
108d56a4 | 7095 | ada_search_struct_field (const char *name, struct value *arg, int offset, |
dda83cd7 | 7096 | struct type *type) |
14f9c5c9 AS |
7097 | { |
7098 | int i; | |
828d5846 | 7099 | int parent_offset = -1; |
14f9c5c9 | 7100 | |
5b4ee69b | 7101 | type = ada_check_typedef (type); |
1f704f76 | 7102 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 7103 | { |
33d16dd9 | 7104 | const char *t_field_name = type->field (i).name (); |
14f9c5c9 AS |
7105 | |
7106 | if (t_field_name == NULL) | |
dda83cd7 | 7107 | continue; |
14f9c5c9 | 7108 | |
828d5846 | 7109 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 7110 | { |
828d5846 XR |
7111 | /* This is a field pointing us to the parent type of a tagged |
7112 | type. As hinted in this function's documentation, we give | |
7113 | preference to fields in the current record first, so what | |
7114 | we do here is just record the index of this field before | |
7115 | we skip it. If it turns out we couldn't find our field | |
7116 | in the current record, then we'll get back to it and search | |
7117 | inside it whether the field might exist in the parent. */ | |
7118 | ||
dda83cd7 SM |
7119 | parent_offset = i; |
7120 | continue; | |
7121 | } | |
828d5846 | 7122 | |
14f9c5c9 | 7123 | else if (field_name_match (t_field_name, name)) |
dda83cd7 | 7124 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
7125 | |
7126 | else if (ada_is_wrapper_field (type, i)) | |
dda83cd7 SM |
7127 | { |
7128 | struct value *v = /* Do not let indent join lines here. */ | |
7129 | ada_search_struct_field (name, arg, | |
b610c045 | 7130 | offset + type->field (i).loc_bitpos () / 8, |
dda83cd7 | 7131 | type->field (i).type ()); |
5b4ee69b | 7132 | |
dda83cd7 SM |
7133 | if (v != NULL) |
7134 | return v; | |
7135 | } | |
14f9c5c9 AS |
7136 | |
7137 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 | 7138 | { |
0963b4bd | 7139 | /* PNH: Do we ever get here? See find_struct_field. */ |
dda83cd7 SM |
7140 | int j; |
7141 | struct type *field_type = ada_check_typedef (type->field (i).type ()); | |
b610c045 | 7142 | int var_offset = offset + type->field (i).loc_bitpos () / 8; |
4c4b4cd2 | 7143 | |
dda83cd7 SM |
7144 | for (j = 0; j < field_type->num_fields (); j += 1) |
7145 | { | |
7146 | struct value *v = ada_search_struct_field /* Force line | |
0963b4bd | 7147 | break. */ |
dda83cd7 | 7148 | (name, arg, |
b610c045 | 7149 | var_offset + field_type->field (j).loc_bitpos () / 8, |
dda83cd7 | 7150 | field_type->field (j).type ()); |
5b4ee69b | 7151 | |
dda83cd7 SM |
7152 | if (v != NULL) |
7153 | return v; | |
7154 | } | |
7155 | } | |
14f9c5c9 | 7156 | } |
828d5846 XR |
7157 | |
7158 | /* Field not found so far. If this is a tagged type which | |
7159 | has a parent, try finding that field in the parent now. */ | |
7160 | ||
7161 | if (parent_offset != -1) | |
7162 | { | |
7163 | struct value *v = ada_search_struct_field ( | |
b610c045 | 7164 | name, arg, offset + type->field (parent_offset).loc_bitpos () / 8, |
940da03e | 7165 | type->field (parent_offset).type ()); |
828d5846 XR |
7166 | |
7167 | if (v != NULL) | |
dda83cd7 | 7168 | return v; |
828d5846 XR |
7169 | } |
7170 | ||
14f9c5c9 AS |
7171 | return NULL; |
7172 | } | |
d2e4a39e | 7173 | |
52ce6436 PH |
7174 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
7175 | int, struct type *); | |
7176 | ||
7177 | ||
7178 | /* Return field #INDEX in ARG, where the index is that returned by | |
7179 | * find_struct_field through its INDEX_P argument. Adjust the address | |
7180 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
0963b4bd | 7181 | * If found, return value, else return NULL. */ |
52ce6436 PH |
7182 | |
7183 | static struct value * | |
7184 | ada_index_struct_field (int index, struct value *arg, int offset, | |
7185 | struct type *type) | |
7186 | { | |
7187 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
7188 | } | |
7189 | ||
7190 | ||
7191 | /* Auxiliary function for ada_index_struct_field. Like | |
7192 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
0963b4bd | 7193 | * *INDEX_P. */ |
52ce6436 PH |
7194 | |
7195 | static struct value * | |
7196 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
7197 | struct type *type) | |
7198 | { | |
7199 | int i; | |
7200 | type = ada_check_typedef (type); | |
7201 | ||
1f704f76 | 7202 | for (i = 0; i < type->num_fields (); i += 1) |
52ce6436 | 7203 | { |
33d16dd9 | 7204 | if (type->field (i).name () == NULL) |
dda83cd7 | 7205 | continue; |
52ce6436 | 7206 | else if (ada_is_wrapper_field (type, i)) |
dda83cd7 SM |
7207 | { |
7208 | struct value *v = /* Do not let indent join lines here. */ | |
7209 | ada_index_struct_field_1 (index_p, arg, | |
b610c045 | 7210 | offset + type->field (i).loc_bitpos () / 8, |
940da03e | 7211 | type->field (i).type ()); |
5b4ee69b | 7212 | |
dda83cd7 SM |
7213 | if (v != NULL) |
7214 | return v; | |
7215 | } | |
52ce6436 PH |
7216 | |
7217 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 | 7218 | { |
52ce6436 | 7219 | /* PNH: Do we ever get here? See ada_search_struct_field, |
0963b4bd | 7220 | find_struct_field. */ |
52ce6436 | 7221 | error (_("Cannot assign this kind of variant record")); |
dda83cd7 | 7222 | } |
52ce6436 | 7223 | else if (*index_p == 0) |
dda83cd7 | 7224 | return ada_value_primitive_field (arg, offset, i, type); |
52ce6436 PH |
7225 | else |
7226 | *index_p -= 1; | |
7227 | } | |
7228 | return NULL; | |
7229 | } | |
7230 | ||
3b4de39c | 7231 | /* Return a string representation of type TYPE. */ |
99bbb428 | 7232 | |
3b4de39c | 7233 | static std::string |
99bbb428 PA |
7234 | type_as_string (struct type *type) |
7235 | { | |
d7e74731 | 7236 | string_file tmp_stream; |
99bbb428 | 7237 | |
d7e74731 | 7238 | type_print (type, "", &tmp_stream, -1); |
99bbb428 | 7239 | |
5d10a204 | 7240 | return tmp_stream.release (); |
99bbb428 PA |
7241 | } |
7242 | ||
14f9c5c9 | 7243 | /* Given a type TYPE, look up the type of the component of type named NAME. |
4c4b4cd2 PH |
7244 | If DISPP is non-null, add its byte displacement from the beginning of a |
7245 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
7246 | work for packed fields). |
7247 | ||
7248 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 7249 | followed by "___". |
14f9c5c9 | 7250 | |
0963b4bd | 7251 | TYPE can be either a struct or union. If REFOK, TYPE may also |
4c4b4cd2 PH |
7252 | be a (pointer or reference)+ to a struct or union, and the |
7253 | ultimate target type will be searched. | |
14f9c5c9 AS |
7254 | |
7255 | Looks recursively into variant clauses and parent types. | |
7256 | ||
828d5846 XR |
7257 | In the case of homonyms in the tagged types, please refer to the |
7258 | long explanation in find_struct_field's function documentation. | |
7259 | ||
4c4b4cd2 PH |
7260 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
7261 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 7262 | |
4c4b4cd2 | 7263 | static struct type * |
a121b7c1 | 7264 | ada_lookup_struct_elt_type (struct type *type, const char *name, int refok, |
dda83cd7 | 7265 | int noerr) |
14f9c5c9 AS |
7266 | { |
7267 | int i; | |
828d5846 | 7268 | int parent_offset = -1; |
14f9c5c9 AS |
7269 | |
7270 | if (name == NULL) | |
7271 | goto BadName; | |
7272 | ||
76a01679 | 7273 | if (refok && type != NULL) |
4c4b4cd2 PH |
7274 | while (1) |
7275 | { | |
dda83cd7 SM |
7276 | type = ada_check_typedef (type); |
7277 | if (type->code () != TYPE_CODE_PTR && type->code () != TYPE_CODE_REF) | |
7278 | break; | |
7279 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 7280 | } |
14f9c5c9 | 7281 | |
76a01679 | 7282 | if (type == NULL |
78134374 SM |
7283 | || (type->code () != TYPE_CODE_STRUCT |
7284 | && type->code () != TYPE_CODE_UNION)) | |
14f9c5c9 | 7285 | { |
4c4b4cd2 | 7286 | if (noerr) |
dda83cd7 | 7287 | return NULL; |
99bbb428 | 7288 | |
3b4de39c PA |
7289 | error (_("Type %s is not a structure or union type"), |
7290 | type != NULL ? type_as_string (type).c_str () : _("(null)")); | |
14f9c5c9 AS |
7291 | } |
7292 | ||
7293 | type = to_static_fixed_type (type); | |
7294 | ||
1f704f76 | 7295 | for (i = 0; i < type->num_fields (); i += 1) |
14f9c5c9 | 7296 | { |
33d16dd9 | 7297 | const char *t_field_name = type->field (i).name (); |
14f9c5c9 | 7298 | struct type *t; |
d2e4a39e | 7299 | |
14f9c5c9 | 7300 | if (t_field_name == NULL) |
dda83cd7 | 7301 | continue; |
14f9c5c9 | 7302 | |
828d5846 | 7303 | else if (ada_is_parent_field (type, i)) |
dda83cd7 | 7304 | { |
828d5846 XR |
7305 | /* This is a field pointing us to the parent type of a tagged |
7306 | type. As hinted in this function's documentation, we give | |
7307 | preference to fields in the current record first, so what | |
7308 | we do here is just record the index of this field before | |
7309 | we skip it. If it turns out we couldn't find our field | |
7310 | in the current record, then we'll get back to it and search | |
7311 | inside it whether the field might exist in the parent. */ | |
7312 | ||
dda83cd7 SM |
7313 | parent_offset = i; |
7314 | continue; | |
7315 | } | |
828d5846 | 7316 | |
14f9c5c9 | 7317 | else if (field_name_match (t_field_name, name)) |
940da03e | 7318 | return type->field (i).type (); |
14f9c5c9 AS |
7319 | |
7320 | else if (ada_is_wrapper_field (type, i)) | |
dda83cd7 SM |
7321 | { |
7322 | t = ada_lookup_struct_elt_type (type->field (i).type (), name, | |
7323 | 0, 1); | |
7324 | if (t != NULL) | |
988f6b3d | 7325 | return t; |
dda83cd7 | 7326 | } |
14f9c5c9 AS |
7327 | |
7328 | else if (ada_is_variant_part (type, i)) | |
dda83cd7 SM |
7329 | { |
7330 | int j; | |
7331 | struct type *field_type = ada_check_typedef (type->field (i).type ()); | |
4c4b4cd2 | 7332 | |
dda83cd7 SM |
7333 | for (j = field_type->num_fields () - 1; j >= 0; j -= 1) |
7334 | { | |
b1f33ddd | 7335 | /* FIXME pnh 2008/01/26: We check for a field that is |
dda83cd7 | 7336 | NOT wrapped in a struct, since the compiler sometimes |
b1f33ddd | 7337 | generates these for unchecked variant types. Revisit |
dda83cd7 | 7338 | if the compiler changes this practice. */ |
33d16dd9 | 7339 | const char *v_field_name = field_type->field (j).name (); |
988f6b3d | 7340 | |
b1f33ddd JB |
7341 | if (v_field_name != NULL |
7342 | && field_name_match (v_field_name, name)) | |
940da03e | 7343 | t = field_type->field (j).type (); |
b1f33ddd | 7344 | else |
940da03e | 7345 | t = ada_lookup_struct_elt_type (field_type->field (j).type (), |
988f6b3d | 7346 | name, 0, 1); |
b1f33ddd | 7347 | |
dda83cd7 | 7348 | if (t != NULL) |
988f6b3d | 7349 | return t; |
dda83cd7 SM |
7350 | } |
7351 | } | |
14f9c5c9 AS |
7352 | |
7353 | } | |
7354 | ||
828d5846 XR |
7355 | /* Field not found so far. If this is a tagged type which |
7356 | has a parent, try finding that field in the parent now. */ | |
7357 | ||
7358 | if (parent_offset != -1) | |
7359 | { | |
dda83cd7 | 7360 | struct type *t; |
828d5846 | 7361 | |
dda83cd7 SM |
7362 | t = ada_lookup_struct_elt_type (type->field (parent_offset).type (), |
7363 | name, 0, 1); | |
7364 | if (t != NULL) | |
828d5846 XR |
7365 | return t; |
7366 | } | |
7367 | ||
14f9c5c9 | 7368 | BadName: |
d2e4a39e | 7369 | if (!noerr) |
14f9c5c9 | 7370 | { |
2b2798cc | 7371 | const char *name_str = name != NULL ? name : _("<null>"); |
99bbb428 PA |
7372 | |
7373 | error (_("Type %s has no component named %s"), | |
3b4de39c | 7374 | type_as_string (type).c_str (), name_str); |
14f9c5c9 AS |
7375 | } |
7376 | ||
7377 | return NULL; | |
7378 | } | |
7379 | ||
b1f33ddd JB |
7380 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7381 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
7382 | represents an unchecked union (that is, the variant part of a | |
0963b4bd | 7383 | record that is named in an Unchecked_Union pragma). */ |
b1f33ddd JB |
7384 | |
7385 | static int | |
7386 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
7387 | { | |
a121b7c1 | 7388 | const char *discrim_name = ada_variant_discrim_name (var_type); |
5b4ee69b | 7389 | |
988f6b3d | 7390 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1) == NULL); |
b1f33ddd JB |
7391 | } |
7392 | ||
7393 | ||
14f9c5c9 | 7394 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
d8af9068 | 7395 | within OUTER, determine which variant clause (field number in VAR_TYPE, |
4c4b4cd2 | 7396 | numbering from 0) is applicable. Returns -1 if none are. */ |
14f9c5c9 | 7397 | |
d2e4a39e | 7398 | int |
d8af9068 | 7399 | ada_which_variant_applies (struct type *var_type, struct value *outer) |
14f9c5c9 AS |
7400 | { |
7401 | int others_clause; | |
7402 | int i; | |
a121b7c1 | 7403 | const char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 | 7404 | struct value *discrim; |
14f9c5c9 AS |
7405 | LONGEST discrim_val; |
7406 | ||
012370f6 TT |
7407 | /* Using plain value_from_contents_and_address here causes problems |
7408 | because we will end up trying to resolve a type that is currently | |
7409 | being constructed. */ | |
0c281816 JB |
7410 | discrim = ada_value_struct_elt (outer, discrim_name, 1); |
7411 | if (discrim == NULL) | |
14f9c5c9 | 7412 | return -1; |
0c281816 | 7413 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
7414 | |
7415 | others_clause = -1; | |
1f704f76 | 7416 | for (i = 0; i < var_type->num_fields (); i += 1) |
14f9c5c9 AS |
7417 | { |
7418 | if (ada_is_others_clause (var_type, i)) | |
dda83cd7 | 7419 | others_clause = i; |
14f9c5c9 | 7420 | else if (ada_in_variant (discrim_val, var_type, i)) |
dda83cd7 | 7421 | return i; |
14f9c5c9 AS |
7422 | } |
7423 | ||
7424 | return others_clause; | |
7425 | } | |
d2e4a39e | 7426 | \f |
14f9c5c9 AS |
7427 | |
7428 | ||
dda83cd7 | 7429 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
7430 | |
7431 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
7432 | (i.e., a size that is not statically recorded in the debugging | |
7433 | data) does not accurately reflect the size or layout of the value. | |
7434 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 7435 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
7436 | |
7437 | /* There is a subtle and tricky problem here. In general, we cannot | |
7438 | determine the size of dynamic records without its data. However, | |
7439 | the 'struct value' data structure, which GDB uses to represent | |
7440 | quantities in the inferior process (the target), requires the size | |
7441 | of the type at the time of its allocation in order to reserve space | |
7442 | for GDB's internal copy of the data. That's why the | |
7443 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 7444 | rather than struct value*s. |
14f9c5c9 AS |
7445 | |
7446 | However, GDB's internal history variables ($1, $2, etc.) are | |
7447 | struct value*s containing internal copies of the data that are not, in | |
7448 | general, the same as the data at their corresponding addresses in | |
7449 | the target. Fortunately, the types we give to these values are all | |
7450 | conventional, fixed-size types (as per the strategy described | |
7451 | above), so that we don't usually have to perform the | |
7452 | 'to_fixed_xxx_type' conversions to look at their values. | |
7453 | Unfortunately, there is one exception: if one of the internal | |
7454 | history variables is an array whose elements are unconstrained | |
7455 | records, then we will need to create distinct fixed types for each | |
7456 | element selected. */ | |
7457 | ||
7458 | /* The upshot of all of this is that many routines take a (type, host | |
7459 | address, target address) triple as arguments to represent a value. | |
7460 | The host address, if non-null, is supposed to contain an internal | |
7461 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 7462 | target at the target address. */ |
14f9c5c9 AS |
7463 | |
7464 | /* Assuming that VAL0 represents a pointer value, the result of | |
7465 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 7466 | dynamic-sized types. */ |
14f9c5c9 | 7467 | |
d2e4a39e AS |
7468 | struct value * |
7469 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 7470 | { |
c48db5ca | 7471 | struct value *val = value_ind (val0); |
5b4ee69b | 7472 | |
b50d69b5 JG |
7473 | if (ada_is_tagged_type (value_type (val), 0)) |
7474 | val = ada_tag_value_at_base_address (val); | |
7475 | ||
4c4b4cd2 | 7476 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
7477 | } |
7478 | ||
7479 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
7480 | qualifiers on VAL0. */ |
7481 | ||
d2e4a39e AS |
7482 | static struct value * |
7483 | ada_coerce_ref (struct value *val0) | |
7484 | { | |
78134374 | 7485 | if (value_type (val0)->code () == TYPE_CODE_REF) |
d2e4a39e AS |
7486 | { |
7487 | struct value *val = val0; | |
5b4ee69b | 7488 | |
994b9211 | 7489 | val = coerce_ref (val); |
b50d69b5 JG |
7490 | |
7491 | if (ada_is_tagged_type (value_type (val), 0)) | |
7492 | val = ada_tag_value_at_base_address (val); | |
7493 | ||
4c4b4cd2 | 7494 | return ada_to_fixed_value (val); |
d2e4a39e AS |
7495 | } |
7496 | else | |
14f9c5c9 AS |
7497 | return val0; |
7498 | } | |
7499 | ||
4c4b4cd2 | 7500 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
7501 | |
7502 | static unsigned int | |
ebf56fd3 | 7503 | field_alignment (struct type *type, int f) |
14f9c5c9 | 7504 | { |
33d16dd9 | 7505 | const char *name = type->field (f).name (); |
64a1bf19 | 7506 | int len; |
14f9c5c9 AS |
7507 | int align_offset; |
7508 | ||
64a1bf19 JB |
7509 | /* The field name should never be null, unless the debugging information |
7510 | is somehow malformed. In this case, we assume the field does not | |
7511 | require any alignment. */ | |
7512 | if (name == NULL) | |
7513 | return 1; | |
7514 | ||
7515 | len = strlen (name); | |
7516 | ||
4c4b4cd2 PH |
7517 | if (!isdigit (name[len - 1])) |
7518 | return 1; | |
14f9c5c9 | 7519 | |
d2e4a39e | 7520 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
7521 | align_offset = len - 2; |
7522 | else | |
7523 | align_offset = len - 1; | |
7524 | ||
61012eef | 7525 | if (align_offset < 7 || !startswith (name + align_offset - 6, "___XV")) |
14f9c5c9 AS |
7526 | return TARGET_CHAR_BIT; |
7527 | ||
4c4b4cd2 PH |
7528 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
7529 | } | |
7530 | ||
852dff6c | 7531 | /* Find a typedef or tag symbol named NAME. Ignores ambiguity. */ |
4c4b4cd2 | 7532 | |
852dff6c JB |
7533 | static struct symbol * |
7534 | ada_find_any_type_symbol (const char *name) | |
4c4b4cd2 PH |
7535 | { |
7536 | struct symbol *sym; | |
7537 | ||
7538 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
66d7f48f | 7539 | if (sym != NULL && sym->aclass () == LOC_TYPEDEF) |
4c4b4cd2 PH |
7540 | return sym; |
7541 | ||
4186eb54 KS |
7542 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); |
7543 | return sym; | |
14f9c5c9 AS |
7544 | } |
7545 | ||
dddfab26 UW |
7546 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
7547 | solely for types defined by debug info, it will not search the GDB | |
7548 | primitive types. */ | |
4c4b4cd2 | 7549 | |
852dff6c | 7550 | static struct type * |
ebf56fd3 | 7551 | ada_find_any_type (const char *name) |
14f9c5c9 | 7552 | { |
852dff6c | 7553 | struct symbol *sym = ada_find_any_type_symbol (name); |
14f9c5c9 | 7554 | |
14f9c5c9 | 7555 | if (sym != NULL) |
5f9c5a63 | 7556 | return sym->type (); |
14f9c5c9 | 7557 | |
dddfab26 | 7558 | return NULL; |
14f9c5c9 AS |
7559 | } |
7560 | ||
739593e0 JB |
7561 | /* Given NAME_SYM and an associated BLOCK, find a "renaming" symbol |
7562 | associated with NAME_SYM's name. NAME_SYM may itself be a renaming | |
7563 | symbol, in which case it is returned. Otherwise, this looks for | |
7564 | symbols whose name is that of NAME_SYM suffixed with "___XR". | |
7565 | Return symbol if found, and NULL otherwise. */ | |
4c4b4cd2 | 7566 | |
c0e70c62 TT |
7567 | static bool |
7568 | ada_is_renaming_symbol (struct symbol *name_sym) | |
aeb5907d | 7569 | { |
987012b8 | 7570 | const char *name = name_sym->linkage_name (); |
c0e70c62 | 7571 | return strstr (name, "___XR") != NULL; |
4c4b4cd2 PH |
7572 | } |
7573 | ||
14f9c5c9 | 7574 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 7575 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 7576 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
7577 | otherwise return 0. */ |
7578 | ||
14f9c5c9 | 7579 | int |
d2e4a39e | 7580 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
7581 | { |
7582 | if (type1 == NULL) | |
7583 | return 1; | |
7584 | else if (type0 == NULL) | |
7585 | return 0; | |
78134374 | 7586 | else if (type1->code () == TYPE_CODE_VOID) |
14f9c5c9 | 7587 | return 1; |
78134374 | 7588 | else if (type0->code () == TYPE_CODE_VOID) |
14f9c5c9 | 7589 | return 0; |
7d93a1e0 | 7590 | else if (type1->name () == NULL && type0->name () != NULL) |
4c4b4cd2 | 7591 | return 1; |
ad82864c | 7592 | else if (ada_is_constrained_packed_array_type (type0)) |
14f9c5c9 | 7593 | return 1; |
4c4b4cd2 | 7594 | else if (ada_is_array_descriptor_type (type0) |
dda83cd7 | 7595 | && !ada_is_array_descriptor_type (type1)) |
14f9c5c9 | 7596 | return 1; |
aeb5907d JB |
7597 | else |
7598 | { | |
7d93a1e0 SM |
7599 | const char *type0_name = type0->name (); |
7600 | const char *type1_name = type1->name (); | |
aeb5907d JB |
7601 | |
7602 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
7603 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
7604 | return 1; | |
7605 | } | |
14f9c5c9 AS |
7606 | return 0; |
7607 | } | |
7608 | ||
e86ca25f TT |
7609 | /* The name of TYPE, which is its TYPE_NAME. Null if TYPE is |
7610 | null. */ | |
4c4b4cd2 | 7611 | |
0d5cff50 | 7612 | const char * |
d2e4a39e | 7613 | ada_type_name (struct type *type) |
14f9c5c9 | 7614 | { |
d2e4a39e | 7615 | if (type == NULL) |
14f9c5c9 | 7616 | return NULL; |
7d93a1e0 | 7617 | return type->name (); |
14f9c5c9 AS |
7618 | } |
7619 | ||
b4ba55a1 JB |
7620 | /* Search the list of "descriptive" types associated to TYPE for a type |
7621 | whose name is NAME. */ | |
7622 | ||
7623 | static struct type * | |
7624 | find_parallel_type_by_descriptive_type (struct type *type, const char *name) | |
7625 | { | |
931e5bc3 | 7626 | struct type *result, *tmp; |
b4ba55a1 | 7627 | |
c6044dd1 JB |
7628 | if (ada_ignore_descriptive_types_p) |
7629 | return NULL; | |
7630 | ||
b4ba55a1 JB |
7631 | /* If there no descriptive-type info, then there is no parallel type |
7632 | to be found. */ | |
7633 | if (!HAVE_GNAT_AUX_INFO (type)) | |
7634 | return NULL; | |
7635 | ||
7636 | result = TYPE_DESCRIPTIVE_TYPE (type); | |
7637 | while (result != NULL) | |
7638 | { | |
0d5cff50 | 7639 | const char *result_name = ada_type_name (result); |
b4ba55a1 JB |
7640 | |
7641 | if (result_name == NULL) | |
dda83cd7 SM |
7642 | { |
7643 | warning (_("unexpected null name on descriptive type")); | |
7644 | return NULL; | |
7645 | } | |
b4ba55a1 JB |
7646 | |
7647 | /* If the names match, stop. */ | |
7648 | if (strcmp (result_name, name) == 0) | |
7649 | break; | |
7650 | ||
7651 | /* Otherwise, look at the next item on the list, if any. */ | |
7652 | if (HAVE_GNAT_AUX_INFO (result)) | |
931e5bc3 JG |
7653 | tmp = TYPE_DESCRIPTIVE_TYPE (result); |
7654 | else | |
7655 | tmp = NULL; | |
7656 | ||
7657 | /* If not found either, try after having resolved the typedef. */ | |
7658 | if (tmp != NULL) | |
7659 | result = tmp; | |
b4ba55a1 | 7660 | else |
931e5bc3 | 7661 | { |
f168693b | 7662 | result = check_typedef (result); |
931e5bc3 JG |
7663 | if (HAVE_GNAT_AUX_INFO (result)) |
7664 | result = TYPE_DESCRIPTIVE_TYPE (result); | |
7665 | else | |
7666 | result = NULL; | |
7667 | } | |
b4ba55a1 JB |
7668 | } |
7669 | ||
7670 | /* If we didn't find a match, see whether this is a packed array. With | |
7671 | older compilers, the descriptive type information is either absent or | |
7672 | irrelevant when it comes to packed arrays so the above lookup fails. | |
7673 | Fall back to using a parallel lookup by name in this case. */ | |
12ab9e09 | 7674 | if (result == NULL && ada_is_constrained_packed_array_type (type)) |
b4ba55a1 JB |
7675 | return ada_find_any_type (name); |
7676 | ||
7677 | return result; | |
7678 | } | |
7679 | ||
7680 | /* Find a parallel type to TYPE with the specified NAME, using the | |
7681 | descriptive type taken from the debugging information, if available, | |
7682 | and otherwise using the (slower) name-based method. */ | |
7683 | ||
7684 | static struct type * | |
7685 | ada_find_parallel_type_with_name (struct type *type, const char *name) | |
7686 | { | |
7687 | struct type *result = NULL; | |
7688 | ||
7689 | if (HAVE_GNAT_AUX_INFO (type)) | |
7690 | result = find_parallel_type_by_descriptive_type (type, name); | |
7691 | else | |
7692 | result = ada_find_any_type (name); | |
7693 | ||
7694 | return result; | |
7695 | } | |
7696 | ||
7697 | /* Same as above, but specify the name of the parallel type by appending | |
4c4b4cd2 | 7698 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 7699 | |
d2e4a39e | 7700 | struct type * |
ebf56fd3 | 7701 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 7702 | { |
0d5cff50 | 7703 | char *name; |
fe978cb0 | 7704 | const char *type_name = ada_type_name (type); |
14f9c5c9 | 7705 | int len; |
d2e4a39e | 7706 | |
fe978cb0 | 7707 | if (type_name == NULL) |
14f9c5c9 AS |
7708 | return NULL; |
7709 | ||
fe978cb0 | 7710 | len = strlen (type_name); |
14f9c5c9 | 7711 | |
b4ba55a1 | 7712 | name = (char *) alloca (len + strlen (suffix) + 1); |
14f9c5c9 | 7713 | |
fe978cb0 | 7714 | strcpy (name, type_name); |
14f9c5c9 AS |
7715 | strcpy (name + len, suffix); |
7716 | ||
b4ba55a1 | 7717 | return ada_find_parallel_type_with_name (type, name); |
14f9c5c9 AS |
7718 | } |
7719 | ||
14f9c5c9 | 7720 | /* If TYPE is a variable-size record type, return the corresponding template |
4c4b4cd2 | 7721 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 7722 | |
d2e4a39e AS |
7723 | static struct type * |
7724 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 7725 | { |
61ee279c | 7726 | type = ada_check_typedef (type); |
14f9c5c9 | 7727 | |
78134374 | 7728 | if (type == NULL || type->code () != TYPE_CODE_STRUCT |
d2e4a39e | 7729 | || ada_type_name (type) == NULL) |
14f9c5c9 | 7730 | return NULL; |
d2e4a39e | 7731 | else |
14f9c5c9 AS |
7732 | { |
7733 | int len = strlen (ada_type_name (type)); | |
5b4ee69b | 7734 | |
4c4b4cd2 | 7735 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
dda83cd7 | 7736 | return type; |
14f9c5c9 | 7737 | else |
dda83cd7 | 7738 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
7739 | } |
7740 | } | |
7741 | ||
7742 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 7743 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 7744 | |
d2e4a39e AS |
7745 | static int |
7746 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 | 7747 | { |
33d16dd9 | 7748 | const char *name = templ_type->field (field_num).name (); |
5b4ee69b | 7749 | |
d2e4a39e | 7750 | return name != NULL |
940da03e | 7751 | && templ_type->field (field_num).type ()->code () == TYPE_CODE_PTR |
14f9c5c9 AS |
7752 | && strstr (name, "___XVL") != NULL; |
7753 | } | |
7754 | ||
4c4b4cd2 PH |
7755 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
7756 | represent a variant record type. */ | |
14f9c5c9 | 7757 | |
d2e4a39e | 7758 | static int |
4c4b4cd2 | 7759 | variant_field_index (struct type *type) |
14f9c5c9 AS |
7760 | { |
7761 | int f; | |
7762 | ||
78134374 | 7763 | if (type == NULL || type->code () != TYPE_CODE_STRUCT) |
4c4b4cd2 PH |
7764 | return -1; |
7765 | ||
1f704f76 | 7766 | for (f = 0; f < type->num_fields (); f += 1) |
4c4b4cd2 PH |
7767 | { |
7768 | if (ada_is_variant_part (type, f)) | |
dda83cd7 | 7769 | return f; |
4c4b4cd2 PH |
7770 | } |
7771 | return -1; | |
14f9c5c9 AS |
7772 | } |
7773 | ||
4c4b4cd2 PH |
7774 | /* A record type with no fields. */ |
7775 | ||
d2e4a39e | 7776 | static struct type * |
fe978cb0 | 7777 | empty_record (struct type *templ) |
14f9c5c9 | 7778 | { |
fe978cb0 | 7779 | struct type *type = alloc_type_copy (templ); |
5b4ee69b | 7780 | |
67607e24 | 7781 | type->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 7782 | INIT_NONE_SPECIFIC (type); |
d0e39ea2 | 7783 | type->set_name ("<empty>"); |
14f9c5c9 AS |
7784 | TYPE_LENGTH (type) = 0; |
7785 | return type; | |
7786 | } | |
7787 | ||
7788 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
7789 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
7790 | the beginning of this section) VAL according to GNAT conventions. | |
7791 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 7792 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
7793 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
7794 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 7795 | of the variant. |
14f9c5c9 | 7796 | |
4c4b4cd2 PH |
7797 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
7798 | length are not statically known are discarded. As a consequence, | |
7799 | VALADDR, ADDRESS and DVAL0 are ignored. | |
7800 | ||
7801 | NOTE: Limitations: For now, we assume that dynamic fields and | |
7802 | variants occupy whole numbers of bytes. However, they need not be | |
7803 | byte-aligned. */ | |
7804 | ||
7805 | struct type * | |
10a2c479 | 7806 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 7807 | const gdb_byte *valaddr, |
dda83cd7 SM |
7808 | CORE_ADDR address, struct value *dval0, |
7809 | int keep_dynamic_fields) | |
14f9c5c9 | 7810 | { |
d2e4a39e AS |
7811 | struct value *mark = value_mark (); |
7812 | struct value *dval; | |
7813 | struct type *rtype; | |
14f9c5c9 | 7814 | int nfields, bit_len; |
4c4b4cd2 | 7815 | int variant_field; |
14f9c5c9 | 7816 | long off; |
d94e4f4f | 7817 | int fld_bit_len; |
14f9c5c9 AS |
7818 | int f; |
7819 | ||
4c4b4cd2 PH |
7820 | /* Compute the number of fields in this record type that are going |
7821 | to be processed: unless keep_dynamic_fields, this includes only | |
7822 | fields whose position and length are static will be processed. */ | |
7823 | if (keep_dynamic_fields) | |
1f704f76 | 7824 | nfields = type->num_fields (); |
4c4b4cd2 PH |
7825 | else |
7826 | { | |
7827 | nfields = 0; | |
1f704f76 | 7828 | while (nfields < type->num_fields () |
dda83cd7 SM |
7829 | && !ada_is_variant_part (type, nfields) |
7830 | && !is_dynamic_field (type, nfields)) | |
7831 | nfields++; | |
4c4b4cd2 PH |
7832 | } |
7833 | ||
e9bb382b | 7834 | rtype = alloc_type_copy (type); |
67607e24 | 7835 | rtype->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 7836 | INIT_NONE_SPECIFIC (rtype); |
5e33d5f4 | 7837 | rtype->set_num_fields (nfields); |
3cabb6b0 SM |
7838 | rtype->set_fields |
7839 | ((struct field *) TYPE_ZALLOC (rtype, nfields * sizeof (struct field))); | |
d0e39ea2 | 7840 | rtype->set_name (ada_type_name (type)); |
9cdd0d12 | 7841 | rtype->set_is_fixed_instance (true); |
14f9c5c9 | 7842 | |
d2e4a39e AS |
7843 | off = 0; |
7844 | bit_len = 0; | |
4c4b4cd2 PH |
7845 | variant_field = -1; |
7846 | ||
14f9c5c9 AS |
7847 | for (f = 0; f < nfields; f += 1) |
7848 | { | |
a89febbd | 7849 | off = align_up (off, field_alignment (type, f)) |
b610c045 | 7850 | + type->field (f).loc_bitpos (); |
cd3f655c | 7851 | rtype->field (f).set_loc_bitpos (off); |
d2e4a39e | 7852 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 7853 | |
d2e4a39e | 7854 | if (ada_is_variant_part (type, f)) |
dda83cd7 SM |
7855 | { |
7856 | variant_field = f; | |
7857 | fld_bit_len = 0; | |
7858 | } | |
14f9c5c9 | 7859 | else if (is_dynamic_field (type, f)) |
dda83cd7 | 7860 | { |
284614f0 JB |
7861 | const gdb_byte *field_valaddr = valaddr; |
7862 | CORE_ADDR field_address = address; | |
7863 | struct type *field_type = | |
940da03e | 7864 | TYPE_TARGET_TYPE (type->field (f).type ()); |
284614f0 | 7865 | |
dda83cd7 | 7866 | if (dval0 == NULL) |
b5304971 | 7867 | { |
012370f6 TT |
7868 | /* Using plain value_from_contents_and_address here |
7869 | causes problems because we will end up trying to | |
7870 | resolve a type that is currently being | |
7871 | constructed. */ | |
7872 | dval = value_from_contents_and_address_unresolved (rtype, | |
7873 | valaddr, | |
7874 | address); | |
9f1f738a | 7875 | rtype = value_type (dval); |
b5304971 | 7876 | } |
dda83cd7 SM |
7877 | else |
7878 | dval = dval0; | |
4c4b4cd2 | 7879 | |
284614f0 JB |
7880 | /* If the type referenced by this field is an aligner type, we need |
7881 | to unwrap that aligner type, because its size might not be set. | |
7882 | Keeping the aligner type would cause us to compute the wrong | |
7883 | size for this field, impacting the offset of the all the fields | |
7884 | that follow this one. */ | |
7885 | if (ada_is_aligner_type (field_type)) | |
7886 | { | |
b610c045 | 7887 | long field_offset = type->field (f).loc_bitpos (); |
284614f0 JB |
7888 | |
7889 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
7890 | field_address = cond_offset_target (field_address, field_offset); | |
7891 | field_type = ada_aligned_type (field_type); | |
7892 | } | |
7893 | ||
7894 | field_valaddr = cond_offset_host (field_valaddr, | |
7895 | off / TARGET_CHAR_BIT); | |
7896 | field_address = cond_offset_target (field_address, | |
7897 | off / TARGET_CHAR_BIT); | |
7898 | ||
7899 | /* Get the fixed type of the field. Note that, in this case, | |
7900 | we do not want to get the real type out of the tag: if | |
7901 | the current field is the parent part of a tagged record, | |
7902 | we will get the tag of the object. Clearly wrong: the real | |
7903 | type of the parent is not the real type of the child. We | |
7904 | would end up in an infinite loop. */ | |
7905 | field_type = ada_get_base_type (field_type); | |
7906 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
7907 | field_address, dval, 0); | |
7908 | ||
5d14b6e5 | 7909 | rtype->field (f).set_type (field_type); |
33d16dd9 | 7910 | rtype->field (f).set_name (type->field (f).name ()); |
27f2a97b JB |
7911 | /* The multiplication can potentially overflow. But because |
7912 | the field length has been size-checked just above, and | |
7913 | assuming that the maximum size is a reasonable value, | |
7914 | an overflow should not happen in practice. So rather than | |
7915 | adding overflow recovery code to this already complex code, | |
7916 | we just assume that it's not going to happen. */ | |
dda83cd7 SM |
7917 | fld_bit_len = |
7918 | TYPE_LENGTH (rtype->field (f).type ()) * TARGET_CHAR_BIT; | |
7919 | } | |
14f9c5c9 | 7920 | else |
dda83cd7 | 7921 | { |
5ded5331 JB |
7922 | /* Note: If this field's type is a typedef, it is important |
7923 | to preserve the typedef layer. | |
7924 | ||
7925 | Otherwise, we might be transforming a typedef to a fat | |
7926 | pointer (encoding a pointer to an unconstrained array), | |
7927 | into a basic fat pointer (encoding an unconstrained | |
7928 | array). As both types are implemented using the same | |
7929 | structure, the typedef is the only clue which allows us | |
7930 | to distinguish between the two options. Stripping it | |
7931 | would prevent us from printing this field appropriately. */ | |
dda83cd7 | 7932 | rtype->field (f).set_type (type->field (f).type ()); |
33d16dd9 | 7933 | rtype->field (f).set_name (type->field (f).name ()); |
dda83cd7 SM |
7934 | if (TYPE_FIELD_BITSIZE (type, f) > 0) |
7935 | fld_bit_len = | |
7936 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
7937 | else | |
5ded5331 | 7938 | { |
940da03e | 7939 | struct type *field_type = type->field (f).type (); |
5ded5331 JB |
7940 | |
7941 | /* We need to be careful of typedefs when computing | |
7942 | the length of our field. If this is a typedef, | |
7943 | get the length of the target type, not the length | |
7944 | of the typedef. */ | |
78134374 | 7945 | if (field_type->code () == TYPE_CODE_TYPEDEF) |
5ded5331 JB |
7946 | field_type = ada_typedef_target_type (field_type); |
7947 | ||
dda83cd7 SM |
7948 | fld_bit_len = |
7949 | TYPE_LENGTH (ada_check_typedef (field_type)) * TARGET_CHAR_BIT; | |
5ded5331 | 7950 | } |
dda83cd7 | 7951 | } |
14f9c5c9 | 7952 | if (off + fld_bit_len > bit_len) |
dda83cd7 | 7953 | bit_len = off + fld_bit_len; |
d94e4f4f | 7954 | off += fld_bit_len; |
4c4b4cd2 | 7955 | TYPE_LENGTH (rtype) = |
dda83cd7 | 7956 | align_up (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; |
14f9c5c9 | 7957 | } |
4c4b4cd2 PH |
7958 | |
7959 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 7960 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
7961 | the record. This can happen in the presence of representation |
7962 | clauses. */ | |
7963 | if (variant_field >= 0) | |
7964 | { | |
7965 | struct type *branch_type; | |
7966 | ||
b610c045 | 7967 | off = rtype->field (variant_field).loc_bitpos (); |
4c4b4cd2 PH |
7968 | |
7969 | if (dval0 == NULL) | |
9f1f738a | 7970 | { |
012370f6 TT |
7971 | /* Using plain value_from_contents_and_address here causes |
7972 | problems because we will end up trying to resolve a type | |
7973 | that is currently being constructed. */ | |
7974 | dval = value_from_contents_and_address_unresolved (rtype, valaddr, | |
7975 | address); | |
9f1f738a SA |
7976 | rtype = value_type (dval); |
7977 | } | |
4c4b4cd2 | 7978 | else |
dda83cd7 | 7979 | dval = dval0; |
4c4b4cd2 PH |
7980 | |
7981 | branch_type = | |
dda83cd7 SM |
7982 | to_fixed_variant_branch_type |
7983 | (type->field (variant_field).type (), | |
7984 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
7985 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
4c4b4cd2 | 7986 | if (branch_type == NULL) |
dda83cd7 SM |
7987 | { |
7988 | for (f = variant_field + 1; f < rtype->num_fields (); f += 1) | |
7989 | rtype->field (f - 1) = rtype->field (f); | |
5e33d5f4 | 7990 | rtype->set_num_fields (rtype->num_fields () - 1); |
dda83cd7 | 7991 | } |
4c4b4cd2 | 7992 | else |
dda83cd7 SM |
7993 | { |
7994 | rtype->field (variant_field).set_type (branch_type); | |
d3fd12df | 7995 | rtype->field (variant_field).set_name ("S"); |
dda83cd7 SM |
7996 | fld_bit_len = |
7997 | TYPE_LENGTH (rtype->field (variant_field).type ()) * | |
7998 | TARGET_CHAR_BIT; | |
7999 | if (off + fld_bit_len > bit_len) | |
8000 | bit_len = off + fld_bit_len; | |
8001 | TYPE_LENGTH (rtype) = | |
8002 | align_up (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
8003 | } | |
4c4b4cd2 PH |
8004 | } |
8005 | ||
714e53ab PH |
8006 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
8007 | should contain the alignment of that record, which should be a strictly | |
8008 | positive value. If null or negative, then something is wrong, most | |
8009 | probably in the debug info. In that case, we don't round up the size | |
0963b4bd | 8010 | of the resulting type. If this record is not part of another structure, |
714e53ab PH |
8011 | the current RTYPE length might be good enough for our purposes. */ |
8012 | if (TYPE_LENGTH (type) <= 0) | |
8013 | { | |
7d93a1e0 | 8014 | if (rtype->name ()) |
cc1defb1 | 8015 | warning (_("Invalid type size for `%s' detected: %s."), |
7d93a1e0 | 8016 | rtype->name (), pulongest (TYPE_LENGTH (type))); |
323e0a4a | 8017 | else |
cc1defb1 KS |
8018 | warning (_("Invalid type size for <unnamed> detected: %s."), |
8019 | pulongest (TYPE_LENGTH (type))); | |
714e53ab PH |
8020 | } |
8021 | else | |
8022 | { | |
a89febbd TT |
8023 | TYPE_LENGTH (rtype) = align_up (TYPE_LENGTH (rtype), |
8024 | TYPE_LENGTH (type)); | |
714e53ab | 8025 | } |
14f9c5c9 AS |
8026 | |
8027 | value_free_to_mark (mark); | |
14f9c5c9 AS |
8028 | return rtype; |
8029 | } | |
8030 | ||
4c4b4cd2 PH |
8031 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
8032 | of 1. */ | |
14f9c5c9 | 8033 | |
d2e4a39e | 8034 | static struct type * |
fc1a4b47 | 8035 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
dda83cd7 | 8036 | CORE_ADDR address, struct value *dval0) |
4c4b4cd2 PH |
8037 | { |
8038 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
dda83cd7 | 8039 | address, dval0, 1); |
4c4b4cd2 PH |
8040 | } |
8041 | ||
8042 | /* An ordinary record type in which ___XVL-convention fields and | |
8043 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
8044 | static approximations, containing all possible fields. Uses | |
8045 | no runtime values. Useless for use in values, but that's OK, | |
8046 | since the results are used only for type determinations. Works on both | |
8047 | structs and unions. Representation note: to save space, we memorize | |
8048 | the result of this function in the TYPE_TARGET_TYPE of the | |
8049 | template type. */ | |
8050 | ||
8051 | static struct type * | |
8052 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
8053 | { |
8054 | struct type *type; | |
8055 | int nfields; | |
8056 | int f; | |
8057 | ||
9e195661 | 8058 | /* No need no do anything if the input type is already fixed. */ |
22c4c60c | 8059 | if (type0->is_fixed_instance ()) |
9e195661 PMR |
8060 | return type0; |
8061 | ||
8062 | /* Likewise if we already have computed the static approximation. */ | |
4c4b4cd2 PH |
8063 | if (TYPE_TARGET_TYPE (type0) != NULL) |
8064 | return TYPE_TARGET_TYPE (type0); | |
8065 | ||
9e195661 | 8066 | /* Don't clone TYPE0 until we are sure we are going to need a copy. */ |
4c4b4cd2 | 8067 | type = type0; |
1f704f76 | 8068 | nfields = type0->num_fields (); |
9e195661 PMR |
8069 | |
8070 | /* Whether or not we cloned TYPE0, cache the result so that we don't do | |
8071 | recompute all over next time. */ | |
8072 | TYPE_TARGET_TYPE (type0) = type; | |
14f9c5c9 AS |
8073 | |
8074 | for (f = 0; f < nfields; f += 1) | |
8075 | { | |
940da03e | 8076 | struct type *field_type = type0->field (f).type (); |
4c4b4cd2 | 8077 | struct type *new_type; |
14f9c5c9 | 8078 | |
4c4b4cd2 | 8079 | if (is_dynamic_field (type0, f)) |
460efde1 JB |
8080 | { |
8081 | field_type = ada_check_typedef (field_type); | |
dda83cd7 | 8082 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); |
460efde1 | 8083 | } |
14f9c5c9 | 8084 | else |
dda83cd7 | 8085 | new_type = static_unwrap_type (field_type); |
9e195661 PMR |
8086 | |
8087 | if (new_type != field_type) | |
8088 | { | |
8089 | /* Clone TYPE0 only the first time we get a new field type. */ | |
8090 | if (type == type0) | |
8091 | { | |
8092 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); | |
78134374 | 8093 | type->set_code (type0->code ()); |
8ecb59f8 | 8094 | INIT_NONE_SPECIFIC (type); |
5e33d5f4 | 8095 | type->set_num_fields (nfields); |
3cabb6b0 SM |
8096 | |
8097 | field *fields = | |
8098 | ((struct field *) | |
8099 | TYPE_ALLOC (type, nfields * sizeof (struct field))); | |
80fc5e77 | 8100 | memcpy (fields, type0->fields (), |
9e195661 | 8101 | sizeof (struct field) * nfields); |
3cabb6b0 SM |
8102 | type->set_fields (fields); |
8103 | ||
d0e39ea2 | 8104 | type->set_name (ada_type_name (type0)); |
9cdd0d12 | 8105 | type->set_is_fixed_instance (true); |
9e195661 PMR |
8106 | TYPE_LENGTH (type) = 0; |
8107 | } | |
5d14b6e5 | 8108 | type->field (f).set_type (new_type); |
33d16dd9 | 8109 | type->field (f).set_name (type0->field (f).name ()); |
9e195661 | 8110 | } |
14f9c5c9 | 8111 | } |
9e195661 | 8112 | |
14f9c5c9 AS |
8113 | return type; |
8114 | } | |
8115 | ||
4c4b4cd2 | 8116 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
8117 | whose address in memory is ADDRESS, returns a revision of TYPE, |
8118 | which should be a non-dynamic-sized record, in which the variant | |
8119 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
8120 | for discriminant values in DVAL0, which can be NULL if the record |
8121 | contains the necessary discriminant values. */ | |
8122 | ||
d2e4a39e | 8123 | static struct type * |
fc1a4b47 | 8124 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
dda83cd7 | 8125 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 8126 | { |
d2e4a39e | 8127 | struct value *mark = value_mark (); |
4c4b4cd2 | 8128 | struct value *dval; |
d2e4a39e | 8129 | struct type *rtype; |
14f9c5c9 | 8130 | struct type *branch_type; |
1f704f76 | 8131 | int nfields = type->num_fields (); |
4c4b4cd2 | 8132 | int variant_field = variant_field_index (type); |
14f9c5c9 | 8133 | |
4c4b4cd2 | 8134 | if (variant_field == -1) |
14f9c5c9 AS |
8135 | return type; |
8136 | ||
4c4b4cd2 | 8137 | if (dval0 == NULL) |
9f1f738a SA |
8138 | { |
8139 | dval = value_from_contents_and_address (type, valaddr, address); | |
8140 | type = value_type (dval); | |
8141 | } | |
4c4b4cd2 PH |
8142 | else |
8143 | dval = dval0; | |
8144 | ||
e9bb382b | 8145 | rtype = alloc_type_copy (type); |
67607e24 | 8146 | rtype->set_code (TYPE_CODE_STRUCT); |
8ecb59f8 | 8147 | INIT_NONE_SPECIFIC (rtype); |
5e33d5f4 | 8148 | rtype->set_num_fields (nfields); |
3cabb6b0 SM |
8149 | |
8150 | field *fields = | |
d2e4a39e | 8151 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
80fc5e77 | 8152 | memcpy (fields, type->fields (), sizeof (struct field) * nfields); |
3cabb6b0 SM |
8153 | rtype->set_fields (fields); |
8154 | ||
d0e39ea2 | 8155 | rtype->set_name (ada_type_name (type)); |
9cdd0d12 | 8156 | rtype->set_is_fixed_instance (true); |
14f9c5c9 AS |
8157 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
8158 | ||
4c4b4cd2 | 8159 | branch_type = to_fixed_variant_branch_type |
940da03e | 8160 | (type->field (variant_field).type (), |
d2e4a39e | 8161 | cond_offset_host (valaddr, |
b610c045 | 8162 | type->field (variant_field).loc_bitpos () |
dda83cd7 | 8163 | / TARGET_CHAR_BIT), |
d2e4a39e | 8164 | cond_offset_target (address, |
b610c045 | 8165 | type->field (variant_field).loc_bitpos () |
dda83cd7 | 8166 | / TARGET_CHAR_BIT), dval); |
d2e4a39e | 8167 | if (branch_type == NULL) |
14f9c5c9 | 8168 | { |
4c4b4cd2 | 8169 | int f; |
5b4ee69b | 8170 | |
4c4b4cd2 | 8171 | for (f = variant_field + 1; f < nfields; f += 1) |
dda83cd7 | 8172 | rtype->field (f - 1) = rtype->field (f); |
5e33d5f4 | 8173 | rtype->set_num_fields (rtype->num_fields () - 1); |
14f9c5c9 AS |
8174 | } |
8175 | else | |
8176 | { | |
5d14b6e5 | 8177 | rtype->field (variant_field).set_type (branch_type); |
d3fd12df | 8178 | rtype->field (variant_field).set_name ("S"); |
4c4b4cd2 | 8179 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; |
14f9c5c9 | 8180 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 8181 | } |
940da03e | 8182 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (type->field (variant_field).type ()); |
d2e4a39e | 8183 | |
4c4b4cd2 | 8184 | value_free_to_mark (mark); |
14f9c5c9 AS |
8185 | return rtype; |
8186 | } | |
8187 | ||
8188 | /* An ordinary record type (with fixed-length fields) that describes | |
8189 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
8190 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
8191 | should be in DVAL, a record value; it may be NULL if the object |
8192 | at ADDR itself contains any necessary discriminant values. | |
8193 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
8194 | values from the record are needed. Except in the case that DVAL, | |
8195 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
8196 | unchecked) is replaced by a particular branch of the variant. | |
8197 | ||
8198 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
8199 | is questionable and may be removed. It can arise during the | |
8200 | processing of an unconstrained-array-of-record type where all the | |
8201 | variant branches have exactly the same size. This is because in | |
8202 | such cases, the compiler does not bother to use the XVS convention | |
8203 | when encoding the record. I am currently dubious of this | |
8204 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 8205 | |
d2e4a39e | 8206 | static struct type * |
fc1a4b47 | 8207 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
dda83cd7 | 8208 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 8209 | { |
d2e4a39e | 8210 | struct type *templ_type; |
14f9c5c9 | 8211 | |
22c4c60c | 8212 | if (type0->is_fixed_instance ()) |
4c4b4cd2 PH |
8213 | return type0; |
8214 | ||
d2e4a39e | 8215 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
8216 | |
8217 | if (templ_type != NULL) | |
8218 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
8219 | else if (variant_field_index (type0) >= 0) |
8220 | { | |
8221 | if (dval == NULL && valaddr == NULL && address == 0) | |
dda83cd7 | 8222 | return type0; |
4c4b4cd2 | 8223 | return to_record_with_fixed_variant_part (type0, valaddr, address, |
dda83cd7 | 8224 | dval); |
4c4b4cd2 | 8225 | } |
14f9c5c9 AS |
8226 | else |
8227 | { | |
9cdd0d12 | 8228 | type0->set_is_fixed_instance (true); |
14f9c5c9 AS |
8229 | return type0; |
8230 | } | |
8231 | ||
8232 | } | |
8233 | ||
8234 | /* An ordinary record type (with fixed-length fields) that describes | |
8235 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
8236 | union type. Any necessary discriminants' values should be in DVAL, | |
8237 | a record value. That is, this routine selects the appropriate | |
8238 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd | 8239 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
0963b4bd | 8240 | it represents a variant subject to a pragma Unchecked_Union. */ |
14f9c5c9 | 8241 | |
d2e4a39e | 8242 | static struct type * |
fc1a4b47 | 8243 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
dda83cd7 | 8244 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
8245 | { |
8246 | int which; | |
d2e4a39e AS |
8247 | struct type *templ_type; |
8248 | struct type *var_type; | |
14f9c5c9 | 8249 | |
78134374 | 8250 | if (var_type0->code () == TYPE_CODE_PTR) |
14f9c5c9 | 8251 | var_type = TYPE_TARGET_TYPE (var_type0); |
d2e4a39e | 8252 | else |
14f9c5c9 AS |
8253 | var_type = var_type0; |
8254 | ||
8255 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
8256 | ||
8257 | if (templ_type != NULL) | |
8258 | var_type = templ_type; | |
8259 | ||
b1f33ddd JB |
8260 | if (is_unchecked_variant (var_type, value_type (dval))) |
8261 | return var_type0; | |
d8af9068 | 8262 | which = ada_which_variant_applies (var_type, dval); |
14f9c5c9 AS |
8263 | |
8264 | if (which < 0) | |
e9bb382b | 8265 | return empty_record (var_type); |
14f9c5c9 | 8266 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 8267 | return to_fixed_record_type |
940da03e | 8268 | (TYPE_TARGET_TYPE (var_type->field (which).type ()), |
d2e4a39e | 8269 | valaddr, address, dval); |
940da03e | 8270 | else if (variant_field_index (var_type->field (which).type ()) >= 0) |
d2e4a39e AS |
8271 | return |
8272 | to_fixed_record_type | |
940da03e | 8273 | (var_type->field (which).type (), valaddr, address, dval); |
14f9c5c9 | 8274 | else |
940da03e | 8275 | return var_type->field (which).type (); |
14f9c5c9 AS |
8276 | } |
8277 | ||
8908fca5 JB |
8278 | /* Assuming RANGE_TYPE is a TYPE_CODE_RANGE, return nonzero if |
8279 | ENCODING_TYPE, a type following the GNAT conventions for discrete | |
8280 | type encodings, only carries redundant information. */ | |
8281 | ||
8282 | static int | |
8283 | ada_is_redundant_range_encoding (struct type *range_type, | |
8284 | struct type *encoding_type) | |
8285 | { | |
108d56a4 | 8286 | const char *bounds_str; |
8908fca5 JB |
8287 | int n; |
8288 | LONGEST lo, hi; | |
8289 | ||
78134374 | 8290 | gdb_assert (range_type->code () == TYPE_CODE_RANGE); |
8908fca5 | 8291 | |
78134374 SM |
8292 | if (get_base_type (range_type)->code () |
8293 | != get_base_type (encoding_type)->code ()) | |
005e2509 JB |
8294 | { |
8295 | /* The compiler probably used a simple base type to describe | |
8296 | the range type instead of the range's actual base type, | |
8297 | expecting us to get the real base type from the encoding | |
8298 | anyway. In this situation, the encoding cannot be ignored | |
8299 | as redundant. */ | |
8300 | return 0; | |
8301 | } | |
8302 | ||
8908fca5 JB |
8303 | if (is_dynamic_type (range_type)) |
8304 | return 0; | |
8305 | ||
7d93a1e0 | 8306 | if (encoding_type->name () == NULL) |
8908fca5 JB |
8307 | return 0; |
8308 | ||
7d93a1e0 | 8309 | bounds_str = strstr (encoding_type->name (), "___XDLU_"); |
8908fca5 JB |
8310 | if (bounds_str == NULL) |
8311 | return 0; | |
8312 | ||
8313 | n = 8; /* Skip "___XDLU_". */ | |
8314 | if (!ada_scan_number (bounds_str, n, &lo, &n)) | |
8315 | return 0; | |
5537ddd0 | 8316 | if (range_type->bounds ()->low.const_val () != lo) |
8908fca5 JB |
8317 | return 0; |
8318 | ||
8319 | n += 2; /* Skip the "__" separator between the two bounds. */ | |
8320 | if (!ada_scan_number (bounds_str, n, &hi, &n)) | |
8321 | return 0; | |
5537ddd0 | 8322 | if (range_type->bounds ()->high.const_val () != hi) |
8908fca5 JB |
8323 | return 0; |
8324 | ||
8325 | return 1; | |
8326 | } | |
8327 | ||
8328 | /* Given the array type ARRAY_TYPE, return nonzero if DESC_TYPE, | |
8329 | a type following the GNAT encoding for describing array type | |
8330 | indices, only carries redundant information. */ | |
8331 | ||
8332 | static int | |
8333 | ada_is_redundant_index_type_desc (struct type *array_type, | |
8334 | struct type *desc_type) | |
8335 | { | |
8336 | struct type *this_layer = check_typedef (array_type); | |
8337 | int i; | |
8338 | ||
1f704f76 | 8339 | for (i = 0; i < desc_type->num_fields (); i++) |
8908fca5 | 8340 | { |
3d967001 | 8341 | if (!ada_is_redundant_range_encoding (this_layer->index_type (), |
940da03e | 8342 | desc_type->field (i).type ())) |
8908fca5 JB |
8343 | return 0; |
8344 | this_layer = check_typedef (TYPE_TARGET_TYPE (this_layer)); | |
8345 | } | |
8346 | ||
8347 | return 1; | |
8348 | } | |
8349 | ||
14f9c5c9 AS |
8350 | /* Assuming that TYPE0 is an array type describing the type of a value |
8351 | at ADDR, and that DVAL describes a record containing any | |
8352 | discriminants used in TYPE0, returns a type for the value that | |
8353 | contains no dynamic components (that is, no components whose sizes | |
8354 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
8355 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 8356 | varsize_limit. */ |
14f9c5c9 | 8357 | |
d2e4a39e AS |
8358 | static struct type * |
8359 | to_fixed_array_type (struct type *type0, struct value *dval, | |
dda83cd7 | 8360 | int ignore_too_big) |
14f9c5c9 | 8361 | { |
d2e4a39e AS |
8362 | struct type *index_type_desc; |
8363 | struct type *result; | |
ad82864c | 8364 | int constrained_packed_array_p; |
931e5bc3 | 8365 | static const char *xa_suffix = "___XA"; |
14f9c5c9 | 8366 | |
b0dd7688 | 8367 | type0 = ada_check_typedef (type0); |
22c4c60c | 8368 | if (type0->is_fixed_instance ()) |
4c4b4cd2 | 8369 | return type0; |
14f9c5c9 | 8370 | |
ad82864c JB |
8371 | constrained_packed_array_p = ada_is_constrained_packed_array_type (type0); |
8372 | if (constrained_packed_array_p) | |
75fd6a26 TT |
8373 | { |
8374 | type0 = decode_constrained_packed_array_type (type0); | |
8375 | if (type0 == nullptr) | |
8376 | error (_("could not decode constrained packed array type")); | |
8377 | } | |
284614f0 | 8378 | |
931e5bc3 JG |
8379 | index_type_desc = ada_find_parallel_type (type0, xa_suffix); |
8380 | ||
8381 | /* As mentioned in exp_dbug.ads, for non bit-packed arrays an | |
8382 | encoding suffixed with 'P' may still be generated. If so, | |
8383 | it should be used to find the XA type. */ | |
8384 | ||
8385 | if (index_type_desc == NULL) | |
8386 | { | |
1da0522e | 8387 | const char *type_name = ada_type_name (type0); |
931e5bc3 | 8388 | |
1da0522e | 8389 | if (type_name != NULL) |
931e5bc3 | 8390 | { |
1da0522e | 8391 | const int len = strlen (type_name); |
931e5bc3 JG |
8392 | char *name = (char *) alloca (len + strlen (xa_suffix)); |
8393 | ||
1da0522e | 8394 | if (type_name[len - 1] == 'P') |
931e5bc3 | 8395 | { |
1da0522e | 8396 | strcpy (name, type_name); |
931e5bc3 JG |
8397 | strcpy (name + len - 1, xa_suffix); |
8398 | index_type_desc = ada_find_parallel_type_with_name (type0, name); | |
8399 | } | |
8400 | } | |
8401 | } | |
8402 | ||
28c85d6c | 8403 | ada_fixup_array_indexes_type (index_type_desc); |
8908fca5 JB |
8404 | if (index_type_desc != NULL |
8405 | && ada_is_redundant_index_type_desc (type0, index_type_desc)) | |
8406 | { | |
8407 | /* Ignore this ___XA parallel type, as it does not bring any | |
8408 | useful information. This allows us to avoid creating fixed | |
8409 | versions of the array's index types, which would be identical | |
8410 | to the original ones. This, in turn, can also help avoid | |
8411 | the creation of fixed versions of the array itself. */ | |
8412 | index_type_desc = NULL; | |
8413 | } | |
8414 | ||
14f9c5c9 AS |
8415 | if (index_type_desc == NULL) |
8416 | { | |
61ee279c | 8417 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
5b4ee69b | 8418 | |
14f9c5c9 | 8419 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
dda83cd7 SM |
8420 | depend on the contents of the array in properly constructed |
8421 | debugging data. */ | |
529cad9c | 8422 | /* Create a fixed version of the array element type. |
dda83cd7 SM |
8423 | We're not providing the address of an element here, |
8424 | and thus the actual object value cannot be inspected to do | |
8425 | the conversion. This should not be a problem, since arrays of | |
8426 | unconstrained objects are not allowed. In particular, all | |
8427 | the elements of an array of a tagged type should all be of | |
8428 | the same type specified in the debugging info. No need to | |
8429 | consult the object tag. */ | |
1ed6ede0 | 8430 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 8431 | |
284614f0 JB |
8432 | /* Make sure we always create a new array type when dealing with |
8433 | packed array types, since we're going to fix-up the array | |
8434 | type length and element bitsize a little further down. */ | |
ad82864c | 8435 | if (elt_type0 == elt_type && !constrained_packed_array_p) |
dda83cd7 | 8436 | result = type0; |
14f9c5c9 | 8437 | else |
dda83cd7 SM |
8438 | result = create_array_type (alloc_type_copy (type0), |
8439 | elt_type, type0->index_type ()); | |
14f9c5c9 AS |
8440 | } |
8441 | else | |
8442 | { | |
8443 | int i; | |
8444 | struct type *elt_type0; | |
8445 | ||
8446 | elt_type0 = type0; | |
1f704f76 | 8447 | for (i = index_type_desc->num_fields (); i > 0; i -= 1) |
dda83cd7 | 8448 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
8449 | |
8450 | /* NOTE: result---the fixed version of elt_type0---should never | |
dda83cd7 SM |
8451 | depend on the contents of the array in properly constructed |
8452 | debugging data. */ | |
529cad9c | 8453 | /* Create a fixed version of the array element type. |
dda83cd7 SM |
8454 | We're not providing the address of an element here, |
8455 | and thus the actual object value cannot be inspected to do | |
8456 | the conversion. This should not be a problem, since arrays of | |
8457 | unconstrained objects are not allowed. In particular, all | |
8458 | the elements of an array of a tagged type should all be of | |
8459 | the same type specified in the debugging info. No need to | |
8460 | consult the object tag. */ | |
1ed6ede0 | 8461 | result = |
dda83cd7 | 8462 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); |
1ce677a4 UW |
8463 | |
8464 | elt_type0 = type0; | |
1f704f76 | 8465 | for (i = index_type_desc->num_fields () - 1; i >= 0; i -= 1) |
dda83cd7 SM |
8466 | { |
8467 | struct type *range_type = | |
8468 | to_fixed_range_type (index_type_desc->field (i).type (), dval); | |
5b4ee69b | 8469 | |
dda83cd7 SM |
8470 | result = create_array_type (alloc_type_copy (elt_type0), |
8471 | result, range_type); | |
1ce677a4 | 8472 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
dda83cd7 | 8473 | } |
14f9c5c9 AS |
8474 | } |
8475 | ||
2e6fda7d JB |
8476 | /* We want to preserve the type name. This can be useful when |
8477 | trying to get the type name of a value that has already been | |
8478 | printed (for instance, if the user did "print VAR; whatis $". */ | |
7d93a1e0 | 8479 | result->set_name (type0->name ()); |
2e6fda7d | 8480 | |
ad82864c | 8481 | if (constrained_packed_array_p) |
284614f0 JB |
8482 | { |
8483 | /* So far, the resulting type has been created as if the original | |
8484 | type was a regular (non-packed) array type. As a result, the | |
8485 | bitsize of the array elements needs to be set again, and the array | |
8486 | length needs to be recomputed based on that bitsize. */ | |
8487 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
8488 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
8489 | ||
8490 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
8491 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
8492 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
dda83cd7 | 8493 | TYPE_LENGTH (result)++; |
284614f0 JB |
8494 | } |
8495 | ||
9cdd0d12 | 8496 | result->set_is_fixed_instance (true); |
14f9c5c9 | 8497 | return result; |
d2e4a39e | 8498 | } |
14f9c5c9 AS |
8499 | |
8500 | ||
8501 | /* A standard type (containing no dynamically sized components) | |
8502 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
8503 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 8504 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
8505 | ADDRESS or in VALADDR contains these discriminants. |
8506 | ||
1ed6ede0 JB |
8507 | If CHECK_TAG is not null, in the case of tagged types, this function |
8508 | attempts to locate the object's tag and use it to compute the actual | |
8509 | type. However, when ADDRESS is null, we cannot use it to determine the | |
8510 | location of the tag, and therefore compute the tagged type's actual type. | |
8511 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 8512 | |
f192137b JB |
8513 | static struct type * |
8514 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
dda83cd7 | 8515 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 8516 | { |
61ee279c | 8517 | type = ada_check_typedef (type); |
8ecb59f8 TT |
8518 | |
8519 | /* Only un-fixed types need to be handled here. */ | |
8520 | if (!HAVE_GNAT_AUX_INFO (type)) | |
8521 | return type; | |
8522 | ||
78134374 | 8523 | switch (type->code ()) |
d2e4a39e AS |
8524 | { |
8525 | default: | |
14f9c5c9 | 8526 | return type; |
d2e4a39e | 8527 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 8528 | { |
dda83cd7 SM |
8529 | struct type *static_type = to_static_fixed_type (type); |
8530 | struct type *fixed_record_type = | |
8531 | to_fixed_record_type (type, valaddr, address, NULL); | |
8532 | ||
8533 | /* If STATIC_TYPE is a tagged type and we know the object's address, | |
8534 | then we can determine its tag, and compute the object's actual | |
8535 | type from there. Note that we have to use the fixed record | |
8536 | type (the parent part of the record may have dynamic fields | |
8537 | and the way the location of _tag is expressed may depend on | |
8538 | them). */ | |
8539 | ||
8540 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) | |
8541 | { | |
b50d69b5 JG |
8542 | struct value *tag = |
8543 | value_tag_from_contents_and_address | |
8544 | (fixed_record_type, | |
8545 | valaddr, | |
8546 | address); | |
8547 | struct type *real_type = type_from_tag (tag); | |
8548 | struct value *obj = | |
8549 | value_from_contents_and_address (fixed_record_type, | |
8550 | valaddr, | |
8551 | address); | |
dda83cd7 SM |
8552 | fixed_record_type = value_type (obj); |
8553 | if (real_type != NULL) | |
8554 | return to_fixed_record_type | |
b50d69b5 JG |
8555 | (real_type, NULL, |
8556 | value_address (ada_tag_value_at_base_address (obj)), NULL); | |
dda83cd7 SM |
8557 | } |
8558 | ||
8559 | /* Check to see if there is a parallel ___XVZ variable. | |
8560 | If there is, then it provides the actual size of our type. */ | |
8561 | else if (ada_type_name (fixed_record_type) != NULL) | |
8562 | { | |
8563 | const char *name = ada_type_name (fixed_record_type); | |
8564 | char *xvz_name | |
224c3ddb | 8565 | = (char *) alloca (strlen (name) + 7 /* "___XVZ\0" */); |
eccab96d | 8566 | bool xvz_found = false; |
dda83cd7 | 8567 | LONGEST size; |
4af88198 | 8568 | |
dda83cd7 | 8569 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
a70b8144 | 8570 | try |
eccab96d JB |
8571 | { |
8572 | xvz_found = get_int_var_value (xvz_name, size); | |
8573 | } | |
230d2906 | 8574 | catch (const gdb_exception_error &except) |
eccab96d JB |
8575 | { |
8576 | /* We found the variable, but somehow failed to read | |
8577 | its value. Rethrow the same error, but with a little | |
8578 | bit more information, to help the user understand | |
8579 | what went wrong (Eg: the variable might have been | |
8580 | optimized out). */ | |
8581 | throw_error (except.error, | |
8582 | _("unable to read value of %s (%s)"), | |
3d6e9d23 | 8583 | xvz_name, except.what ()); |
eccab96d | 8584 | } |
eccab96d | 8585 | |
dda83cd7 SM |
8586 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) |
8587 | { | |
8588 | fixed_record_type = copy_type (fixed_record_type); | |
8589 | TYPE_LENGTH (fixed_record_type) = size; | |
8590 | ||
8591 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
8592 | observed this when the debugging info is STABS, and | |
8593 | apparently it is something that is hard to fix. | |
8594 | ||
8595 | In practice, we don't need the actual type definition | |
8596 | at all, because the presence of the XVZ variable allows us | |
8597 | to assume that there must be a XVS type as well, which we | |
8598 | should be able to use later, when we need the actual type | |
8599 | definition. | |
8600 | ||
8601 | In the meantime, pretend that the "fixed" type we are | |
8602 | returning is NOT a stub, because this can cause trouble | |
8603 | when using this type to create new types targeting it. | |
8604 | Indeed, the associated creation routines often check | |
8605 | whether the target type is a stub and will try to replace | |
8606 | it, thus using a type with the wrong size. This, in turn, | |
8607 | might cause the new type to have the wrong size too. | |
8608 | Consider the case of an array, for instance, where the size | |
8609 | of the array is computed from the number of elements in | |
8610 | our array multiplied by the size of its element. */ | |
b4b73759 | 8611 | fixed_record_type->set_is_stub (false); |
dda83cd7 SM |
8612 | } |
8613 | } | |
8614 | return fixed_record_type; | |
4c4b4cd2 | 8615 | } |
d2e4a39e | 8616 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 8617 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
8618 | case TYPE_CODE_UNION: |
8619 | if (dval == NULL) | |
dda83cd7 | 8620 | return type; |
d2e4a39e | 8621 | else |
dda83cd7 | 8622 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 8623 | } |
14f9c5c9 AS |
8624 | } |
8625 | ||
f192137b JB |
8626 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
8627 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
96dbd2c1 JB |
8628 | |
8629 | The typedef layer needs be preserved in order to differentiate between | |
8630 | arrays and array pointers when both types are implemented using the same | |
8631 | fat pointer. In the array pointer case, the pointer is encoded as | |
8632 | a typedef of the pointer type. For instance, considering: | |
8633 | ||
8634 | type String_Access is access String; | |
8635 | S1 : String_Access := null; | |
8636 | ||
8637 | To the debugger, S1 is defined as a typedef of type String. But | |
8638 | to the user, it is a pointer. So if the user tries to print S1, | |
8639 | we should not dereference the array, but print the array address | |
8640 | instead. | |
8641 | ||
8642 | If we didn't preserve the typedef layer, we would lose the fact that | |
8643 | the type is to be presented as a pointer (needs de-reference before | |
8644 | being printed). And we would also use the source-level type name. */ | |
f192137b JB |
8645 | |
8646 | struct type * | |
8647 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
dda83cd7 | 8648 | CORE_ADDR address, struct value *dval, int check_tag) |
f192137b JB |
8649 | |
8650 | { | |
8651 | struct type *fixed_type = | |
8652 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
8653 | ||
96dbd2c1 JB |
8654 | /* If TYPE is a typedef and its target type is the same as the FIXED_TYPE, |
8655 | then preserve the typedef layer. | |
8656 | ||
8657 | Implementation note: We can only check the main-type portion of | |
8658 | the TYPE and FIXED_TYPE, because eliminating the typedef layer | |
8659 | from TYPE now returns a type that has the same instance flags | |
8660 | as TYPE. For instance, if TYPE is a "typedef const", and its | |
8661 | target type is a "struct", then the typedef elimination will return | |
8662 | a "const" version of the target type. See check_typedef for more | |
8663 | details about how the typedef layer elimination is done. | |
8664 | ||
8665 | brobecker/2010-11-19: It seems to me that the only case where it is | |
8666 | useful to preserve the typedef layer is when dealing with fat pointers. | |
8667 | Perhaps, we could add a check for that and preserve the typedef layer | |
85102364 | 8668 | only in that situation. But this seems unnecessary so far, probably |
96dbd2c1 JB |
8669 | because we call check_typedef/ada_check_typedef pretty much everywhere. |
8670 | */ | |
78134374 | 8671 | if (type->code () == TYPE_CODE_TYPEDEF |
720d1a40 | 8672 | && (TYPE_MAIN_TYPE (ada_typedef_target_type (type)) |
96dbd2c1 | 8673 | == TYPE_MAIN_TYPE (fixed_type))) |
f192137b JB |
8674 | return type; |
8675 | ||
8676 | return fixed_type; | |
8677 | } | |
8678 | ||
14f9c5c9 | 8679 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 8680 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 8681 | |
d2e4a39e AS |
8682 | static struct type * |
8683 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 8684 | { |
d2e4a39e | 8685 | struct type *type; |
14f9c5c9 AS |
8686 | |
8687 | if (type0 == NULL) | |
8688 | return NULL; | |
8689 | ||
22c4c60c | 8690 | if (type0->is_fixed_instance ()) |
4c4b4cd2 PH |
8691 | return type0; |
8692 | ||
61ee279c | 8693 | type0 = ada_check_typedef (type0); |
d2e4a39e | 8694 | |
78134374 | 8695 | switch (type0->code ()) |
14f9c5c9 AS |
8696 | { |
8697 | default: | |
8698 | return type0; | |
8699 | case TYPE_CODE_STRUCT: | |
8700 | type = dynamic_template_type (type0); | |
d2e4a39e | 8701 | if (type != NULL) |
dda83cd7 | 8702 | return template_to_static_fixed_type (type); |
4c4b4cd2 | 8703 | else |
dda83cd7 | 8704 | return template_to_static_fixed_type (type0); |
14f9c5c9 AS |
8705 | case TYPE_CODE_UNION: |
8706 | type = ada_find_parallel_type (type0, "___XVU"); | |
8707 | if (type != NULL) | |
dda83cd7 | 8708 | return template_to_static_fixed_type (type); |
4c4b4cd2 | 8709 | else |
dda83cd7 | 8710 | return template_to_static_fixed_type (type0); |
14f9c5c9 AS |
8711 | } |
8712 | } | |
8713 | ||
4c4b4cd2 PH |
8714 | /* A static approximation of TYPE with all type wrappers removed. */ |
8715 | ||
d2e4a39e AS |
8716 | static struct type * |
8717 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
8718 | { |
8719 | if (ada_is_aligner_type (type)) | |
8720 | { | |
940da03e | 8721 | struct type *type1 = ada_check_typedef (type)->field (0).type (); |
14f9c5c9 | 8722 | if (ada_type_name (type1) == NULL) |
d0e39ea2 | 8723 | type1->set_name (ada_type_name (type)); |
14f9c5c9 AS |
8724 | |
8725 | return static_unwrap_type (type1); | |
8726 | } | |
d2e4a39e | 8727 | else |
14f9c5c9 | 8728 | { |
d2e4a39e | 8729 | struct type *raw_real_type = ada_get_base_type (type); |
5b4ee69b | 8730 | |
d2e4a39e | 8731 | if (raw_real_type == type) |
dda83cd7 | 8732 | return type; |
14f9c5c9 | 8733 | else |
dda83cd7 | 8734 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
8735 | } |
8736 | } | |
8737 | ||
8738 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 8739 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
8740 | type Foo; |
8741 | type FooP is access Foo; | |
8742 | V: FooP; | |
8743 | type Foo is array ...; | |
4c4b4cd2 | 8744 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
8745 | cross-references to such types, we instead substitute for FooP a |
8746 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 8747 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
8748 | |
8749 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
8750 | exists, otherwise TYPE. */ |
8751 | ||
d2e4a39e | 8752 | struct type * |
61ee279c | 8753 | ada_check_typedef (struct type *type) |
14f9c5c9 | 8754 | { |
727e3d2e JB |
8755 | if (type == NULL) |
8756 | return NULL; | |
8757 | ||
736ade86 XR |
8758 | /* If our type is an access to an unconstrained array, which is encoded |
8759 | as a TYPE_CODE_TYPEDEF of a fat pointer, then we're done. | |
720d1a40 JB |
8760 | We don't want to strip the TYPE_CODE_TYPDEF layer, because this is |
8761 | what allows us to distinguish between fat pointers that represent | |
8762 | array types, and fat pointers that represent array access types | |
8763 | (in both cases, the compiler implements them as fat pointers). */ | |
736ade86 | 8764 | if (ada_is_access_to_unconstrained_array (type)) |
720d1a40 JB |
8765 | return type; |
8766 | ||
f168693b | 8767 | type = check_typedef (type); |
78134374 | 8768 | if (type == NULL || type->code () != TYPE_CODE_ENUM |
e46d3488 | 8769 | || !type->is_stub () |
7d93a1e0 | 8770 | || type->name () == NULL) |
14f9c5c9 | 8771 | return type; |
d2e4a39e | 8772 | else |
14f9c5c9 | 8773 | { |
7d93a1e0 | 8774 | const char *name = type->name (); |
d2e4a39e | 8775 | struct type *type1 = ada_find_any_type (name); |
5b4ee69b | 8776 | |
05e522ef | 8777 | if (type1 == NULL) |
dda83cd7 | 8778 | return type; |
05e522ef JB |
8779 | |
8780 | /* TYPE1 might itself be a TYPE_CODE_TYPEDEF (this can happen with | |
8781 | stubs pointing to arrays, as we don't create symbols for array | |
3a867c22 JB |
8782 | types, only for the typedef-to-array types). If that's the case, |
8783 | strip the typedef layer. */ | |
78134374 | 8784 | if (type1->code () == TYPE_CODE_TYPEDEF) |
3a867c22 JB |
8785 | type1 = ada_check_typedef (type1); |
8786 | ||
8787 | return type1; | |
14f9c5c9 AS |
8788 | } |
8789 | } | |
8790 | ||
8791 | /* A value representing the data at VALADDR/ADDRESS as described by | |
8792 | type TYPE0, but with a standard (static-sized) type that correctly | |
8793 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
8794 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 8795 | creation of struct values]. */ |
14f9c5c9 | 8796 | |
4c4b4cd2 PH |
8797 | static struct value * |
8798 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
dda83cd7 | 8799 | struct value *val0) |
14f9c5c9 | 8800 | { |
1ed6ede0 | 8801 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
5b4ee69b | 8802 | |
14f9c5c9 AS |
8803 | if (type == type0 && val0 != NULL) |
8804 | return val0; | |
cc0e770c JB |
8805 | |
8806 | if (VALUE_LVAL (val0) != lval_memory) | |
8807 | { | |
8808 | /* Our value does not live in memory; it could be a convenience | |
8809 | variable, for instance. Create a not_lval value using val0's | |
8810 | contents. */ | |
50888e42 | 8811 | return value_from_contents (type, value_contents (val0).data ()); |
cc0e770c JB |
8812 | } |
8813 | ||
8814 | return value_from_contents_and_address (type, 0, address); | |
4c4b4cd2 PH |
8815 | } |
8816 | ||
8817 | /* A value representing VAL, but with a standard (static-sized) type | |
8818 | that correctly describes it. Does not necessarily create a new | |
8819 | value. */ | |
8820 | ||
0c3acc09 | 8821 | struct value * |
4c4b4cd2 PH |
8822 | ada_to_fixed_value (struct value *val) |
8823 | { | |
c48db5ca | 8824 | val = unwrap_value (val); |
d8ce9127 | 8825 | val = ada_to_fixed_value_create (value_type (val), value_address (val), val); |
c48db5ca | 8826 | return val; |
14f9c5c9 | 8827 | } |
d2e4a39e | 8828 | \f |
14f9c5c9 | 8829 | |
14f9c5c9 AS |
8830 | /* Attributes */ |
8831 | ||
4c4b4cd2 PH |
8832 | /* Table mapping attribute numbers to names. |
8833 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 8834 | |
27087b7f | 8835 | static const char * const attribute_names[] = { |
14f9c5c9 AS |
8836 | "<?>", |
8837 | ||
d2e4a39e | 8838 | "first", |
14f9c5c9 AS |
8839 | "last", |
8840 | "length", | |
8841 | "image", | |
14f9c5c9 AS |
8842 | "max", |
8843 | "min", | |
4c4b4cd2 PH |
8844 | "modulus", |
8845 | "pos", | |
8846 | "size", | |
8847 | "tag", | |
14f9c5c9 | 8848 | "val", |
14f9c5c9 AS |
8849 | 0 |
8850 | }; | |
8851 | ||
de93309a | 8852 | static const char * |
4c4b4cd2 | 8853 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 8854 | { |
4c4b4cd2 PH |
8855 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
8856 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
8857 | else |
8858 | return attribute_names[0]; | |
8859 | } | |
8860 | ||
4c4b4cd2 | 8861 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 8862 | |
4c4b4cd2 PH |
8863 | static LONGEST |
8864 | pos_atr (struct value *arg) | |
14f9c5c9 | 8865 | { |
24209737 PH |
8866 | struct value *val = coerce_ref (arg); |
8867 | struct type *type = value_type (val); | |
14f9c5c9 | 8868 | |
d2e4a39e | 8869 | if (!discrete_type_p (type)) |
323e0a4a | 8870 | error (_("'POS only defined on discrete types")); |
14f9c5c9 | 8871 | |
6244c119 SM |
8872 | gdb::optional<LONGEST> result = discrete_position (type, value_as_long (val)); |
8873 | if (!result.has_value ()) | |
aa715135 | 8874 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 | 8875 | |
6244c119 | 8876 | return *result; |
4c4b4cd2 PH |
8877 | } |
8878 | ||
7631cf6c | 8879 | struct value * |
7992accc TT |
8880 | ada_pos_atr (struct type *expect_type, |
8881 | struct expression *exp, | |
8882 | enum noside noside, enum exp_opcode op, | |
8883 | struct value *arg) | |
4c4b4cd2 | 8884 | { |
7992accc TT |
8885 | struct type *type = builtin_type (exp->gdbarch)->builtin_int; |
8886 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8887 | return value_zero (type, not_lval); | |
3cb382c9 | 8888 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
8889 | } |
8890 | ||
4c4b4cd2 | 8891 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 8892 | |
d2e4a39e | 8893 | static struct value * |
53a47a3e | 8894 | val_atr (struct type *type, LONGEST val) |
14f9c5c9 | 8895 | { |
53a47a3e | 8896 | gdb_assert (discrete_type_p (type)); |
0bc2354b TT |
8897 | if (type->code () == TYPE_CODE_RANGE) |
8898 | type = TYPE_TARGET_TYPE (type); | |
78134374 | 8899 | if (type->code () == TYPE_CODE_ENUM) |
14f9c5c9 | 8900 | { |
53a47a3e | 8901 | if (val < 0 || val >= type->num_fields ()) |
dda83cd7 | 8902 | error (_("argument to 'VAL out of range")); |
970db518 | 8903 | val = type->field (val).loc_enumval (); |
14f9c5c9 | 8904 | } |
53a47a3e TT |
8905 | return value_from_longest (type, val); |
8906 | } | |
8907 | ||
9e99f48f | 8908 | struct value * |
3848abd6 | 8909 | ada_val_atr (enum noside noside, struct type *type, struct value *arg) |
53a47a3e | 8910 | { |
3848abd6 TT |
8911 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8912 | return value_zero (type, not_lval); | |
8913 | ||
53a47a3e TT |
8914 | if (!discrete_type_p (type)) |
8915 | error (_("'VAL only defined on discrete types")); | |
8916 | if (!integer_type_p (value_type (arg))) | |
8917 | error (_("'VAL requires integral argument")); | |
8918 | ||
8919 | return val_atr (type, value_as_long (arg)); | |
14f9c5c9 | 8920 | } |
14f9c5c9 | 8921 | \f |
d2e4a39e | 8922 | |
dda83cd7 | 8923 | /* Evaluation */ |
14f9c5c9 | 8924 | |
4c4b4cd2 PH |
8925 | /* True if TYPE appears to be an Ada character type. |
8926 | [At the moment, this is true only for Character and Wide_Character; | |
8927 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 8928 | |
fc913e53 | 8929 | bool |
d2e4a39e | 8930 | ada_is_character_type (struct type *type) |
14f9c5c9 | 8931 | { |
7b9f71f2 JB |
8932 | const char *name; |
8933 | ||
8934 | /* If the type code says it's a character, then assume it really is, | |
8935 | and don't check any further. */ | |
78134374 | 8936 | if (type->code () == TYPE_CODE_CHAR) |
fc913e53 | 8937 | return true; |
7b9f71f2 JB |
8938 | |
8939 | /* Otherwise, assume it's a character type iff it is a discrete type | |
8940 | with a known character type name. */ | |
8941 | name = ada_type_name (type); | |
8942 | return (name != NULL | |
dda83cd7 SM |
8943 | && (type->code () == TYPE_CODE_INT |
8944 | || type->code () == TYPE_CODE_RANGE) | |
8945 | && (strcmp (name, "character") == 0 | |
8946 | || strcmp (name, "wide_character") == 0 | |
8947 | || strcmp (name, "wide_wide_character") == 0 | |
8948 | || strcmp (name, "unsigned char") == 0)); | |
14f9c5c9 AS |
8949 | } |
8950 | ||
4c4b4cd2 | 8951 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 | 8952 | |
fc913e53 | 8953 | bool |
ebf56fd3 | 8954 | ada_is_string_type (struct type *type) |
14f9c5c9 | 8955 | { |
61ee279c | 8956 | type = ada_check_typedef (type); |
d2e4a39e | 8957 | if (type != NULL |
78134374 | 8958 | && type->code () != TYPE_CODE_PTR |
76a01679 | 8959 | && (ada_is_simple_array_type (type) |
dda83cd7 | 8960 | || ada_is_array_descriptor_type (type)) |
14f9c5c9 AS |
8961 | && ada_array_arity (type) == 1) |
8962 | { | |
8963 | struct type *elttype = ada_array_element_type (type, 1); | |
8964 | ||
8965 | return ada_is_character_type (elttype); | |
8966 | } | |
d2e4a39e | 8967 | else |
fc913e53 | 8968 | return false; |
14f9c5c9 AS |
8969 | } |
8970 | ||
5bf03f13 JB |
8971 | /* The compiler sometimes provides a parallel XVS type for a given |
8972 | PAD type. Normally, it is safe to follow the PAD type directly, | |
8973 | but older versions of the compiler have a bug that causes the offset | |
8974 | of its "F" field to be wrong. Following that field in that case | |
8975 | would lead to incorrect results, but this can be worked around | |
8976 | by ignoring the PAD type and using the associated XVS type instead. | |
8977 | ||
8978 | Set to True if the debugger should trust the contents of PAD types. | |
8979 | Otherwise, ignore the PAD type if there is a parallel XVS type. */ | |
491144b5 | 8980 | static bool trust_pad_over_xvs = true; |
14f9c5c9 AS |
8981 | |
8982 | /* True if TYPE is a struct type introduced by the compiler to force the | |
8983 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 8984 | distinctive name. */ |
14f9c5c9 AS |
8985 | |
8986 | int | |
ebf56fd3 | 8987 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 8988 | { |
61ee279c | 8989 | type = ada_check_typedef (type); |
714e53ab | 8990 | |
5bf03f13 | 8991 | if (!trust_pad_over_xvs && ada_find_parallel_type (type, "___XVS") != NULL) |
714e53ab PH |
8992 | return 0; |
8993 | ||
78134374 | 8994 | return (type->code () == TYPE_CODE_STRUCT |
dda83cd7 | 8995 | && type->num_fields () == 1 |
33d16dd9 | 8996 | && strcmp (type->field (0).name (), "F") == 0); |
14f9c5c9 AS |
8997 | } |
8998 | ||
8999 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 9000 | the parallel type. */ |
14f9c5c9 | 9001 | |
d2e4a39e AS |
9002 | struct type * |
9003 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 9004 | { |
d2e4a39e AS |
9005 | struct type *real_type_namer; |
9006 | struct type *raw_real_type; | |
14f9c5c9 | 9007 | |
78134374 | 9008 | if (raw_type == NULL || raw_type->code () != TYPE_CODE_STRUCT) |
14f9c5c9 AS |
9009 | return raw_type; |
9010 | ||
284614f0 JB |
9011 | if (ada_is_aligner_type (raw_type)) |
9012 | /* The encoding specifies that we should always use the aligner type. | |
9013 | So, even if this aligner type has an associated XVS type, we should | |
9014 | simply ignore it. | |
9015 | ||
9016 | According to the compiler gurus, an XVS type parallel to an aligner | |
9017 | type may exist because of a stabs limitation. In stabs, aligner | |
9018 | types are empty because the field has a variable-sized type, and | |
9019 | thus cannot actually be used as an aligner type. As a result, | |
9020 | we need the associated parallel XVS type to decode the type. | |
9021 | Since the policy in the compiler is to not change the internal | |
9022 | representation based on the debugging info format, we sometimes | |
9023 | end up having a redundant XVS type parallel to the aligner type. */ | |
9024 | return raw_type; | |
9025 | ||
14f9c5c9 | 9026 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 9027 | if (real_type_namer == NULL |
78134374 | 9028 | || real_type_namer->code () != TYPE_CODE_STRUCT |
1f704f76 | 9029 | || real_type_namer->num_fields () != 1) |
14f9c5c9 AS |
9030 | return raw_type; |
9031 | ||
940da03e | 9032 | if (real_type_namer->field (0).type ()->code () != TYPE_CODE_REF) |
f80d3ff2 JB |
9033 | { |
9034 | /* This is an older encoding form where the base type needs to be | |
85102364 | 9035 | looked up by name. We prefer the newer encoding because it is |
f80d3ff2 | 9036 | more efficient. */ |
33d16dd9 | 9037 | raw_real_type = ada_find_any_type (real_type_namer->field (0).name ()); |
f80d3ff2 JB |
9038 | if (raw_real_type == NULL) |
9039 | return raw_type; | |
9040 | else | |
9041 | return raw_real_type; | |
9042 | } | |
9043 | ||
9044 | /* The field in our XVS type is a reference to the base type. */ | |
940da03e | 9045 | return TYPE_TARGET_TYPE (real_type_namer->field (0).type ()); |
d2e4a39e | 9046 | } |
14f9c5c9 | 9047 | |
4c4b4cd2 | 9048 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 9049 | |
d2e4a39e AS |
9050 | struct type * |
9051 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
9052 | { |
9053 | if (ada_is_aligner_type (type)) | |
940da03e | 9054 | return ada_aligned_type (type->field (0).type ()); |
14f9c5c9 AS |
9055 | else |
9056 | return ada_get_base_type (type); | |
9057 | } | |
9058 | ||
9059 | ||
9060 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 9061 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 9062 | |
fc1a4b47 AC |
9063 | const gdb_byte * |
9064 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 9065 | { |
d2e4a39e | 9066 | if (ada_is_aligner_type (type)) |
b610c045 SM |
9067 | return ada_aligned_value_addr |
9068 | (type->field (0).type (), | |
9069 | valaddr + type->field (0).loc_bitpos () / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
9070 | else |
9071 | return valaddr; | |
9072 | } | |
9073 | ||
4c4b4cd2 PH |
9074 | |
9075 | ||
14f9c5c9 | 9076 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 9077 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
9078 | const char * |
9079 | ada_enum_name (const char *name) | |
14f9c5c9 | 9080 | { |
5f9febe0 | 9081 | static std::string storage; |
e6a959d6 | 9082 | const char *tmp; |
14f9c5c9 | 9083 | |
4c4b4cd2 PH |
9084 | /* First, unqualify the enumeration name: |
9085 | 1. Search for the last '.' character. If we find one, then skip | |
177b42fe | 9086 | all the preceding characters, the unqualified name starts |
76a01679 | 9087 | right after that dot. |
4c4b4cd2 | 9088 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
9089 | translates dots into "__". Search forward for double underscores, |
9090 | but stop searching when we hit an overloading suffix, which is | |
9091 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 9092 | |
c3e5cd34 PH |
9093 | tmp = strrchr (name, '.'); |
9094 | if (tmp != NULL) | |
4c4b4cd2 PH |
9095 | name = tmp + 1; |
9096 | else | |
14f9c5c9 | 9097 | { |
4c4b4cd2 | 9098 | while ((tmp = strstr (name, "__")) != NULL) |
dda83cd7 SM |
9099 | { |
9100 | if (isdigit (tmp[2])) | |
9101 | break; | |
9102 | else | |
9103 | name = tmp + 2; | |
9104 | } | |
14f9c5c9 AS |
9105 | } |
9106 | ||
9107 | if (name[0] == 'Q') | |
9108 | { | |
14f9c5c9 | 9109 | int v; |
5b4ee69b | 9110 | |
14f9c5c9 | 9111 | if (name[1] == 'U' || name[1] == 'W') |
dda83cd7 | 9112 | { |
a7041de8 TT |
9113 | int offset = 2; |
9114 | if (name[1] == 'W' && name[2] == 'W') | |
9115 | { | |
9116 | /* Also handle the QWW case. */ | |
9117 | ++offset; | |
9118 | } | |
9119 | if (sscanf (name + offset, "%x", &v) != 1) | |
dda83cd7 SM |
9120 | return name; |
9121 | } | |
272560b5 TT |
9122 | else if (((name[1] >= '0' && name[1] <= '9') |
9123 | || (name[1] >= 'a' && name[1] <= 'z')) | |
9124 | && name[2] == '\0') | |
9125 | { | |
5f9febe0 TT |
9126 | storage = string_printf ("'%c'", name[1]); |
9127 | return storage.c_str (); | |
272560b5 | 9128 | } |
14f9c5c9 | 9129 | else |
dda83cd7 | 9130 | return name; |
14f9c5c9 AS |
9131 | |
9132 | if (isascii (v) && isprint (v)) | |
5f9febe0 | 9133 | storage = string_printf ("'%c'", v); |
14f9c5c9 | 9134 | else if (name[1] == 'U') |
a7041de8 TT |
9135 | storage = string_printf ("'[\"%02x\"]'", v); |
9136 | else if (name[2] != 'W') | |
9137 | storage = string_printf ("'[\"%04x\"]'", v); | |
14f9c5c9 | 9138 | else |
a7041de8 | 9139 | storage = string_printf ("'[\"%06x\"]'", v); |
14f9c5c9 | 9140 | |
5f9febe0 | 9141 | return storage.c_str (); |
14f9c5c9 | 9142 | } |
d2e4a39e | 9143 | else |
4c4b4cd2 | 9144 | { |
c3e5cd34 PH |
9145 | tmp = strstr (name, "__"); |
9146 | if (tmp == NULL) | |
9147 | tmp = strstr (name, "$"); | |
9148 | if (tmp != NULL) | |
dda83cd7 | 9149 | { |
5f9febe0 TT |
9150 | storage = std::string (name, tmp - name); |
9151 | return storage.c_str (); | |
dda83cd7 | 9152 | } |
4c4b4cd2 PH |
9153 | |
9154 | return name; | |
9155 | } | |
14f9c5c9 AS |
9156 | } |
9157 | ||
14f9c5c9 | 9158 | /* If VAL is wrapped in an aligner or subtype wrapper, return the |
4c4b4cd2 | 9159 | value it wraps. */ |
14f9c5c9 | 9160 | |
d2e4a39e AS |
9161 | static struct value * |
9162 | unwrap_value (struct value *val) | |
14f9c5c9 | 9163 | { |
df407dfe | 9164 | struct type *type = ada_check_typedef (value_type (val)); |
5b4ee69b | 9165 | |
14f9c5c9 AS |
9166 | if (ada_is_aligner_type (type)) |
9167 | { | |
de4d072f | 9168 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 9169 | struct type *val_type = ada_check_typedef (value_type (v)); |
5b4ee69b | 9170 | |
14f9c5c9 | 9171 | if (ada_type_name (val_type) == NULL) |
d0e39ea2 | 9172 | val_type->set_name (ada_type_name (type)); |
14f9c5c9 AS |
9173 | |
9174 | return unwrap_value (v); | |
9175 | } | |
d2e4a39e | 9176 | else |
14f9c5c9 | 9177 | { |
d2e4a39e | 9178 | struct type *raw_real_type = |
dda83cd7 | 9179 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 9180 | |
5bf03f13 JB |
9181 | /* If there is no parallel XVS or XVE type, then the value is |
9182 | already unwrapped. Return it without further modification. */ | |
9183 | if ((type == raw_real_type) | |
9184 | && ada_find_parallel_type (type, "___XVE") == NULL) | |
9185 | return val; | |
14f9c5c9 | 9186 | |
d2e4a39e | 9187 | return |
dda83cd7 SM |
9188 | coerce_unspec_val_to_type |
9189 | (val, ada_to_fixed_type (raw_real_type, 0, | |
9190 | value_address (val), | |
9191 | NULL, 1)); | |
14f9c5c9 AS |
9192 | } |
9193 | } | |
d2e4a39e | 9194 | |
d99dcf51 JB |
9195 | /* Given two array types T1 and T2, return nonzero iff both arrays |
9196 | contain the same number of elements. */ | |
9197 | ||
9198 | static int | |
9199 | ada_same_array_size_p (struct type *t1, struct type *t2) | |
9200 | { | |
9201 | LONGEST lo1, hi1, lo2, hi2; | |
9202 | ||
9203 | /* Get the array bounds in order to verify that the size of | |
9204 | the two arrays match. */ | |
9205 | if (!get_array_bounds (t1, &lo1, &hi1) | |
9206 | || !get_array_bounds (t2, &lo2, &hi2)) | |
9207 | error (_("unable to determine array bounds")); | |
9208 | ||
9209 | /* To make things easier for size comparison, normalize a bit | |
9210 | the case of empty arrays by making sure that the difference | |
9211 | between upper bound and lower bound is always -1. */ | |
9212 | if (lo1 > hi1) | |
9213 | hi1 = lo1 - 1; | |
9214 | if (lo2 > hi2) | |
9215 | hi2 = lo2 - 1; | |
9216 | ||
9217 | return (hi1 - lo1 == hi2 - lo2); | |
9218 | } | |
9219 | ||
9220 | /* Assuming that VAL is an array of integrals, and TYPE represents | |
9221 | an array with the same number of elements, but with wider integral | |
9222 | elements, return an array "casted" to TYPE. In practice, this | |
9223 | means that the returned array is built by casting each element | |
9224 | of the original array into TYPE's (wider) element type. */ | |
9225 | ||
9226 | static struct value * | |
9227 | ada_promote_array_of_integrals (struct type *type, struct value *val) | |
9228 | { | |
9229 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
9230 | LONGEST lo, hi; | |
d99dcf51 JB |
9231 | LONGEST i; |
9232 | ||
9233 | /* Verify that both val and type are arrays of scalars, and | |
9234 | that the size of val's elements is smaller than the size | |
9235 | of type's element. */ | |
78134374 | 9236 | gdb_assert (type->code () == TYPE_CODE_ARRAY); |
d99dcf51 | 9237 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (type))); |
78134374 | 9238 | gdb_assert (value_type (val)->code () == TYPE_CODE_ARRAY); |
d99dcf51 JB |
9239 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (value_type (val)))); |
9240 | gdb_assert (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) | |
9241 | > TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (val)))); | |
9242 | ||
9243 | if (!get_array_bounds (type, &lo, &hi)) | |
9244 | error (_("unable to determine array bounds")); | |
9245 | ||
4bce7cda SM |
9246 | value *res = allocate_value (type); |
9247 | gdb::array_view<gdb_byte> res_contents = value_contents_writeable (res); | |
d99dcf51 JB |
9248 | |
9249 | /* Promote each array element. */ | |
9250 | for (i = 0; i < hi - lo + 1; i++) | |
9251 | { | |
9252 | struct value *elt = value_cast (elt_type, value_subscript (val, lo + i)); | |
4bce7cda | 9253 | int elt_len = TYPE_LENGTH (elt_type); |
d99dcf51 | 9254 | |
4bce7cda | 9255 | copy (value_contents_all (elt), res_contents.slice (elt_len * i, elt_len)); |
d99dcf51 JB |
9256 | } |
9257 | ||
9258 | return res; | |
9259 | } | |
9260 | ||
4c4b4cd2 PH |
9261 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
9262 | return the converted value. */ | |
9263 | ||
d2e4a39e AS |
9264 | static struct value * |
9265 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 9266 | { |
df407dfe | 9267 | struct type *type2 = value_type (val); |
5b4ee69b | 9268 | |
14f9c5c9 AS |
9269 | if (type == type2) |
9270 | return val; | |
9271 | ||
61ee279c PH |
9272 | type2 = ada_check_typedef (type2); |
9273 | type = ada_check_typedef (type); | |
14f9c5c9 | 9274 | |
78134374 SM |
9275 | if (type2->code () == TYPE_CODE_PTR |
9276 | && type->code () == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
9277 | { |
9278 | val = ada_value_ind (val); | |
df407dfe | 9279 | type2 = value_type (val); |
14f9c5c9 AS |
9280 | } |
9281 | ||
78134374 SM |
9282 | if (type2->code () == TYPE_CODE_ARRAY |
9283 | && type->code () == TYPE_CODE_ARRAY) | |
14f9c5c9 | 9284 | { |
d99dcf51 JB |
9285 | if (!ada_same_array_size_p (type, type2)) |
9286 | error (_("cannot assign arrays of different length")); | |
9287 | ||
9288 | if (is_integral_type (TYPE_TARGET_TYPE (type)) | |
9289 | && is_integral_type (TYPE_TARGET_TYPE (type2)) | |
9290 | && TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
9291 | < TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
9292 | { | |
9293 | /* Allow implicit promotion of the array elements to | |
9294 | a wider type. */ | |
9295 | return ada_promote_array_of_integrals (type, val); | |
9296 | } | |
9297 | ||
9298 | if (TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
dda83cd7 SM |
9299 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type))) |
9300 | error (_("Incompatible types in assignment")); | |
04624583 | 9301 | deprecated_set_value_type (val, type); |
14f9c5c9 | 9302 | } |
d2e4a39e | 9303 | return val; |
14f9c5c9 AS |
9304 | } |
9305 | ||
4c4b4cd2 PH |
9306 | static struct value * |
9307 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
9308 | { | |
9309 | struct value *val; | |
9310 | struct type *type1, *type2; | |
9311 | LONGEST v, v1, v2; | |
9312 | ||
994b9211 AC |
9313 | arg1 = coerce_ref (arg1); |
9314 | arg2 = coerce_ref (arg2); | |
18af8284 JB |
9315 | type1 = get_base_type (ada_check_typedef (value_type (arg1))); |
9316 | type2 = get_base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 9317 | |
78134374 SM |
9318 | if (type1->code () != TYPE_CODE_INT |
9319 | || type2->code () != TYPE_CODE_INT) | |
4c4b4cd2 PH |
9320 | return value_binop (arg1, arg2, op); |
9321 | ||
76a01679 | 9322 | switch (op) |
4c4b4cd2 PH |
9323 | { |
9324 | case BINOP_MOD: | |
9325 | case BINOP_DIV: | |
9326 | case BINOP_REM: | |
9327 | break; | |
9328 | default: | |
9329 | return value_binop (arg1, arg2, op); | |
9330 | } | |
9331 | ||
9332 | v2 = value_as_long (arg2); | |
9333 | if (v2 == 0) | |
b0f9164c TT |
9334 | { |
9335 | const char *name; | |
9336 | if (op == BINOP_MOD) | |
9337 | name = "mod"; | |
9338 | else if (op == BINOP_DIV) | |
9339 | name = "/"; | |
9340 | else | |
9341 | { | |
9342 | gdb_assert (op == BINOP_REM); | |
9343 | name = "rem"; | |
9344 | } | |
9345 | ||
9346 | error (_("second operand of %s must not be zero."), name); | |
9347 | } | |
4c4b4cd2 | 9348 | |
c6d940a9 | 9349 | if (type1->is_unsigned () || op == BINOP_MOD) |
4c4b4cd2 PH |
9350 | return value_binop (arg1, arg2, op); |
9351 | ||
9352 | v1 = value_as_long (arg1); | |
9353 | switch (op) | |
9354 | { | |
9355 | case BINOP_DIV: | |
9356 | v = v1 / v2; | |
76a01679 | 9357 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
dda83cd7 | 9358 | v += v > 0 ? -1 : 1; |
4c4b4cd2 PH |
9359 | break; |
9360 | case BINOP_REM: | |
9361 | v = v1 % v2; | |
76a01679 | 9362 | if (v * v1 < 0) |
dda83cd7 | 9363 | v -= v2; |
4c4b4cd2 PH |
9364 | break; |
9365 | default: | |
9366 | /* Should not reach this point. */ | |
9367 | v = 0; | |
9368 | } | |
9369 | ||
9370 | val = allocate_value (type1); | |
50888e42 | 9371 | store_unsigned_integer (value_contents_raw (val).data (), |
dda83cd7 | 9372 | TYPE_LENGTH (value_type (val)), |
34877895 | 9373 | type_byte_order (type1), v); |
4c4b4cd2 PH |
9374 | return val; |
9375 | } | |
9376 | ||
9377 | static int | |
9378 | ada_value_equal (struct value *arg1, struct value *arg2) | |
9379 | { | |
df407dfe AC |
9380 | if (ada_is_direct_array_type (value_type (arg1)) |
9381 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 9382 | { |
79e8fcaa JB |
9383 | struct type *arg1_type, *arg2_type; |
9384 | ||
f58b38bf | 9385 | /* Automatically dereference any array reference before |
dda83cd7 | 9386 | we attempt to perform the comparison. */ |
f58b38bf JB |
9387 | arg1 = ada_coerce_ref (arg1); |
9388 | arg2 = ada_coerce_ref (arg2); | |
79e8fcaa | 9389 | |
4c4b4cd2 PH |
9390 | arg1 = ada_coerce_to_simple_array (arg1); |
9391 | arg2 = ada_coerce_to_simple_array (arg2); | |
79e8fcaa JB |
9392 | |
9393 | arg1_type = ada_check_typedef (value_type (arg1)); | |
9394 | arg2_type = ada_check_typedef (value_type (arg2)); | |
9395 | ||
78134374 | 9396 | if (arg1_type->code () != TYPE_CODE_ARRAY |
dda83cd7 SM |
9397 | || arg2_type->code () != TYPE_CODE_ARRAY) |
9398 | error (_("Attempt to compare array with non-array")); | |
4c4b4cd2 | 9399 | /* FIXME: The following works only for types whose |
dda83cd7 SM |
9400 | representations use all bits (no padding or undefined bits) |
9401 | and do not have user-defined equality. */ | |
79e8fcaa | 9402 | return (TYPE_LENGTH (arg1_type) == TYPE_LENGTH (arg2_type) |
50888e42 SM |
9403 | && memcmp (value_contents (arg1).data (), |
9404 | value_contents (arg2).data (), | |
79e8fcaa | 9405 | TYPE_LENGTH (arg1_type)) == 0); |
4c4b4cd2 PH |
9406 | } |
9407 | return value_equal (arg1, arg2); | |
9408 | } | |
9409 | ||
d3c54a1c TT |
9410 | namespace expr |
9411 | { | |
9412 | ||
9413 | bool | |
9414 | check_objfile (const std::unique_ptr<ada_component> &comp, | |
9415 | struct objfile *objfile) | |
9416 | { | |
9417 | return comp->uses_objfile (objfile); | |
9418 | } | |
9419 | ||
9420 | /* Assign the result of evaluating ARG starting at *POS to the INDEXth | |
9421 | component of LHS (a simple array or a record). Does not modify the | |
9422 | inferior's memory, nor does it modify LHS (unless LHS == | |
9423 | CONTAINER). */ | |
52ce6436 PH |
9424 | |
9425 | static void | |
9426 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
d3c54a1c | 9427 | struct expression *exp, operation_up &arg) |
52ce6436 | 9428 | { |
d3c54a1c TT |
9429 | scoped_value_mark mark; |
9430 | ||
52ce6436 | 9431 | struct value *elt; |
0e2da9f0 | 9432 | struct type *lhs_type = check_typedef (value_type (lhs)); |
5b4ee69b | 9433 | |
78134374 | 9434 | if (lhs_type->code () == TYPE_CODE_ARRAY) |
52ce6436 | 9435 | { |
22601c15 UW |
9436 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
9437 | struct value *index_val = value_from_longest (index_type, index); | |
5b4ee69b | 9438 | |
52ce6436 PH |
9439 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
9440 | } | |
9441 | else | |
9442 | { | |
9443 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
c48db5ca | 9444 | elt = ada_to_fixed_value (elt); |
52ce6436 PH |
9445 | } |
9446 | ||
d3c54a1c TT |
9447 | ada_aggregate_operation *ag_op |
9448 | = dynamic_cast<ada_aggregate_operation *> (arg.get ()); | |
9449 | if (ag_op != nullptr) | |
9450 | ag_op->assign_aggregate (container, elt, exp); | |
52ce6436 | 9451 | else |
d3c54a1c TT |
9452 | value_assign_to_component (container, elt, |
9453 | arg->evaluate (nullptr, exp, | |
9454 | EVAL_NORMAL)); | |
9455 | } | |
52ce6436 | 9456 | |
d3c54a1c TT |
9457 | bool |
9458 | ada_aggregate_component::uses_objfile (struct objfile *objfile) | |
9459 | { | |
9460 | for (const auto &item : m_components) | |
9461 | if (item->uses_objfile (objfile)) | |
9462 | return true; | |
9463 | return false; | |
9464 | } | |
9465 | ||
9466 | void | |
9467 | ada_aggregate_component::dump (ui_file *stream, int depth) | |
9468 | { | |
9469 | fprintf_filtered (stream, _("%*sAggregate\n"), depth, ""); | |
9470 | for (const auto &item : m_components) | |
9471 | item->dump (stream, depth + 1); | |
9472 | } | |
9473 | ||
9474 | void | |
9475 | ada_aggregate_component::assign (struct value *container, | |
9476 | struct value *lhs, struct expression *exp, | |
9477 | std::vector<LONGEST> &indices, | |
9478 | LONGEST low, LONGEST high) | |
9479 | { | |
9480 | for (auto &item : m_components) | |
9481 | item->assign (container, lhs, exp, indices, low, high); | |
52ce6436 PH |
9482 | } |
9483 | ||
207582c0 | 9484 | /* See ada-exp.h. */ |
52ce6436 | 9485 | |
207582c0 | 9486 | value * |
d3c54a1c TT |
9487 | ada_aggregate_operation::assign_aggregate (struct value *container, |
9488 | struct value *lhs, | |
9489 | struct expression *exp) | |
52ce6436 PH |
9490 | { |
9491 | struct type *lhs_type; | |
52ce6436 | 9492 | LONGEST low_index, high_index; |
52ce6436 PH |
9493 | |
9494 | container = ada_coerce_ref (container); | |
9495 | if (ada_is_direct_array_type (value_type (container))) | |
9496 | container = ada_coerce_to_simple_array (container); | |
9497 | lhs = ada_coerce_ref (lhs); | |
9498 | if (!deprecated_value_modifiable (lhs)) | |
9499 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
9500 | ||
0e2da9f0 | 9501 | lhs_type = check_typedef (value_type (lhs)); |
52ce6436 PH |
9502 | if (ada_is_direct_array_type (lhs_type)) |
9503 | { | |
9504 | lhs = ada_coerce_to_simple_array (lhs); | |
0e2da9f0 | 9505 | lhs_type = check_typedef (value_type (lhs)); |
cf88be68 SM |
9506 | low_index = lhs_type->bounds ()->low.const_val (); |
9507 | high_index = lhs_type->bounds ()->high.const_val (); | |
52ce6436 | 9508 | } |
78134374 | 9509 | else if (lhs_type->code () == TYPE_CODE_STRUCT) |
52ce6436 PH |
9510 | { |
9511 | low_index = 0; | |
9512 | high_index = num_visible_fields (lhs_type) - 1; | |
52ce6436 PH |
9513 | } |
9514 | else | |
9515 | error (_("Left-hand side must be array or record.")); | |
9516 | ||
cf608cc4 | 9517 | std::vector<LONGEST> indices (4); |
52ce6436 PH |
9518 | indices[0] = indices[1] = low_index - 1; |
9519 | indices[2] = indices[3] = high_index + 1; | |
52ce6436 | 9520 | |
d3c54a1c TT |
9521 | std::get<0> (m_storage)->assign (container, lhs, exp, indices, |
9522 | low_index, high_index); | |
207582c0 TT |
9523 | |
9524 | return container; | |
d3c54a1c TT |
9525 | } |
9526 | ||
9527 | bool | |
9528 | ada_positional_component::uses_objfile (struct objfile *objfile) | |
9529 | { | |
9530 | return m_op->uses_objfile (objfile); | |
9531 | } | |
52ce6436 | 9532 | |
d3c54a1c TT |
9533 | void |
9534 | ada_positional_component::dump (ui_file *stream, int depth) | |
9535 | { | |
9536 | fprintf_filtered (stream, _("%*sPositional, index = %d\n"), | |
9537 | depth, "", m_index); | |
9538 | m_op->dump (stream, depth + 1); | |
52ce6436 | 9539 | } |
d3c54a1c | 9540 | |
52ce6436 | 9541 | /* Assign into the component of LHS indexed by the OP_POSITIONAL |
d3c54a1c TT |
9542 | construct, given that the positions are relative to lower bound |
9543 | LOW, where HIGH is the upper bound. Record the position in | |
9544 | INDICES. CONTAINER is as for assign_aggregate. */ | |
9545 | void | |
9546 | ada_positional_component::assign (struct value *container, | |
9547 | struct value *lhs, struct expression *exp, | |
9548 | std::vector<LONGEST> &indices, | |
9549 | LONGEST low, LONGEST high) | |
52ce6436 | 9550 | { |
d3c54a1c TT |
9551 | LONGEST ind = m_index + low; |
9552 | ||
52ce6436 | 9553 | if (ind - 1 == high) |
e1d5a0d2 | 9554 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
9555 | if (ind <= high) |
9556 | { | |
cf608cc4 | 9557 | add_component_interval (ind, ind, indices); |
d3c54a1c | 9558 | assign_component (container, lhs, ind, exp, m_op); |
52ce6436 | 9559 | } |
52ce6436 PH |
9560 | } |
9561 | ||
d3c54a1c TT |
9562 | bool |
9563 | ada_discrete_range_association::uses_objfile (struct objfile *objfile) | |
a88c4354 TT |
9564 | { |
9565 | return m_low->uses_objfile (objfile) || m_high->uses_objfile (objfile); | |
9566 | } | |
9567 | ||
9568 | void | |
9569 | ada_discrete_range_association::dump (ui_file *stream, int depth) | |
9570 | { | |
9571 | fprintf_filtered (stream, _("%*sDiscrete range:\n"), depth, ""); | |
9572 | m_low->dump (stream, depth + 1); | |
9573 | m_high->dump (stream, depth + 1); | |
9574 | } | |
9575 | ||
9576 | void | |
9577 | ada_discrete_range_association::assign (struct value *container, | |
9578 | struct value *lhs, | |
9579 | struct expression *exp, | |
9580 | std::vector<LONGEST> &indices, | |
9581 | LONGEST low, LONGEST high, | |
9582 | operation_up &op) | |
9583 | { | |
9584 | LONGEST lower = value_as_long (m_low->evaluate (nullptr, exp, EVAL_NORMAL)); | |
9585 | LONGEST upper = value_as_long (m_high->evaluate (nullptr, exp, EVAL_NORMAL)); | |
9586 | ||
9587 | if (lower <= upper && (lower < low || upper > high)) | |
9588 | error (_("Index in component association out of bounds.")); | |
9589 | ||
9590 | add_component_interval (lower, upper, indices); | |
9591 | while (lower <= upper) | |
9592 | { | |
9593 | assign_component (container, lhs, lower, exp, op); | |
9594 | lower += 1; | |
9595 | } | |
9596 | } | |
9597 | ||
9598 | bool | |
9599 | ada_name_association::uses_objfile (struct objfile *objfile) | |
9600 | { | |
9601 | return m_val->uses_objfile (objfile); | |
9602 | } | |
9603 | ||
9604 | void | |
9605 | ada_name_association::dump (ui_file *stream, int depth) | |
9606 | { | |
9607 | fprintf_filtered (stream, _("%*sName:\n"), depth, ""); | |
9608 | m_val->dump (stream, depth + 1); | |
9609 | } | |
9610 | ||
9611 | void | |
9612 | ada_name_association::assign (struct value *container, | |
9613 | struct value *lhs, | |
9614 | struct expression *exp, | |
9615 | std::vector<LONGEST> &indices, | |
9616 | LONGEST low, LONGEST high, | |
9617 | operation_up &op) | |
9618 | { | |
9619 | int index; | |
9620 | ||
9621 | if (ada_is_direct_array_type (value_type (lhs))) | |
9622 | index = longest_to_int (value_as_long (m_val->evaluate (nullptr, exp, | |
9623 | EVAL_NORMAL))); | |
9624 | else | |
9625 | { | |
9626 | ada_string_operation *strop | |
9627 | = dynamic_cast<ada_string_operation *> (m_val.get ()); | |
9628 | ||
9629 | const char *name; | |
9630 | if (strop != nullptr) | |
9631 | name = strop->get_name (); | |
9632 | else | |
9633 | { | |
9634 | ada_var_value_operation *vvo | |
9635 | = dynamic_cast<ada_var_value_operation *> (m_val.get ()); | |
9636 | if (vvo != nullptr) | |
9637 | error (_("Invalid record component association.")); | |
9638 | name = vvo->get_symbol ()->natural_name (); | |
9639 | } | |
9640 | ||
9641 | index = 0; | |
9642 | if (! find_struct_field (name, value_type (lhs), 0, | |
9643 | NULL, NULL, NULL, NULL, &index)) | |
9644 | error (_("Unknown component name: %s."), name); | |
9645 | } | |
9646 | ||
9647 | add_component_interval (index, index, indices); | |
9648 | assign_component (container, lhs, index, exp, op); | |
9649 | } | |
9650 | ||
9651 | bool | |
9652 | ada_choices_component::uses_objfile (struct objfile *objfile) | |
9653 | { | |
9654 | if (m_op->uses_objfile (objfile)) | |
9655 | return true; | |
9656 | for (const auto &item : m_assocs) | |
9657 | if (item->uses_objfile (objfile)) | |
9658 | return true; | |
9659 | return false; | |
9660 | } | |
9661 | ||
9662 | void | |
9663 | ada_choices_component::dump (ui_file *stream, int depth) | |
9664 | { | |
9665 | fprintf_filtered (stream, _("%*sChoices:\n"), depth, ""); | |
9666 | m_op->dump (stream, depth + 1); | |
9667 | for (const auto &item : m_assocs) | |
9668 | item->dump (stream, depth + 1); | |
9669 | } | |
9670 | ||
9671 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
9672 | construct at *POS, updating *POS past the construct, given that | |
9673 | the allowable indices are LOW..HIGH. Record the indices assigned | |
9674 | to in INDICES. CONTAINER is as for assign_aggregate. */ | |
9675 | void | |
9676 | ada_choices_component::assign (struct value *container, | |
9677 | struct value *lhs, struct expression *exp, | |
9678 | std::vector<LONGEST> &indices, | |
9679 | LONGEST low, LONGEST high) | |
9680 | { | |
9681 | for (auto &item : m_assocs) | |
9682 | item->assign (container, lhs, exp, indices, low, high, m_op); | |
9683 | } | |
9684 | ||
9685 | bool | |
9686 | ada_others_component::uses_objfile (struct objfile *objfile) | |
9687 | { | |
9688 | return m_op->uses_objfile (objfile); | |
9689 | } | |
9690 | ||
9691 | void | |
9692 | ada_others_component::dump (ui_file *stream, int depth) | |
9693 | { | |
9694 | fprintf_filtered (stream, _("%*sOthers:\n"), depth, ""); | |
9695 | m_op->dump (stream, depth + 1); | |
9696 | } | |
9697 | ||
9698 | /* Assign the value of the expression in the OP_OTHERS construct in | |
9699 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
9700 | have not been previously assigned. The index intervals already assigned | |
9701 | are in INDICES. CONTAINER is as for assign_aggregate. */ | |
9702 | void | |
9703 | ada_others_component::assign (struct value *container, | |
9704 | struct value *lhs, struct expression *exp, | |
9705 | std::vector<LONGEST> &indices, | |
9706 | LONGEST low, LONGEST high) | |
9707 | { | |
9708 | int num_indices = indices.size (); | |
9709 | for (int i = 0; i < num_indices - 2; i += 2) | |
9710 | { | |
9711 | for (LONGEST ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
9712 | assign_component (container, lhs, ind, exp, m_op); | |
9713 | } | |
9714 | } | |
9715 | ||
9716 | struct value * | |
9717 | ada_assign_operation::evaluate (struct type *expect_type, | |
9718 | struct expression *exp, | |
9719 | enum noside noside) | |
9720 | { | |
9721 | value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
9722 | ||
9723 | ada_aggregate_operation *ag_op | |
9724 | = dynamic_cast<ada_aggregate_operation *> (std::get<1> (m_storage).get ()); | |
9725 | if (ag_op != nullptr) | |
9726 | { | |
9727 | if (noside != EVAL_NORMAL) | |
9728 | return arg1; | |
9729 | ||
207582c0 | 9730 | arg1 = ag_op->assign_aggregate (arg1, arg1, exp); |
a88c4354 TT |
9731 | return ada_value_assign (arg1, arg1); |
9732 | } | |
9733 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, | |
9734 | except if the lhs of our assignment is a convenience variable. | |
9735 | In the case of assigning to a convenience variable, the lhs | |
9736 | should be exactly the result of the evaluation of the rhs. */ | |
9737 | struct type *type = value_type (arg1); | |
9738 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
9739 | type = NULL; | |
9740 | value *arg2 = std::get<1> (m_storage)->evaluate (type, exp, noside); | |
0b2b0b82 | 9741 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a88c4354 TT |
9742 | return arg1; |
9743 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
9744 | { | |
9745 | /* Nothing. */ | |
9746 | } | |
9747 | else | |
9748 | arg2 = coerce_for_assign (value_type (arg1), arg2); | |
9749 | return ada_value_assign (arg1, arg2); | |
9750 | } | |
9751 | ||
9752 | } /* namespace expr */ | |
9753 | ||
cf608cc4 TT |
9754 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals |
9755 | [ INDICES[0] .. INDICES[1] ],... The resulting intervals do not | |
9756 | overlap. */ | |
52ce6436 PH |
9757 | static void |
9758 | add_component_interval (LONGEST low, LONGEST high, | |
cf608cc4 | 9759 | std::vector<LONGEST> &indices) |
52ce6436 PH |
9760 | { |
9761 | int i, j; | |
5b4ee69b | 9762 | |
cf608cc4 TT |
9763 | int size = indices.size (); |
9764 | for (i = 0; i < size; i += 2) { | |
52ce6436 PH |
9765 | if (high >= indices[i] && low <= indices[i + 1]) |
9766 | { | |
9767 | int kh; | |
5b4ee69b | 9768 | |
cf608cc4 | 9769 | for (kh = i + 2; kh < size; kh += 2) |
52ce6436 PH |
9770 | if (high < indices[kh]) |
9771 | break; | |
9772 | if (low < indices[i]) | |
9773 | indices[i] = low; | |
9774 | indices[i + 1] = indices[kh - 1]; | |
9775 | if (high > indices[i + 1]) | |
9776 | indices[i + 1] = high; | |
cf608cc4 TT |
9777 | memcpy (indices.data () + i + 2, indices.data () + kh, size - kh); |
9778 | indices.resize (kh - i - 2); | |
52ce6436 PH |
9779 | return; |
9780 | } | |
9781 | else if (high < indices[i]) | |
9782 | break; | |
9783 | } | |
9784 | ||
cf608cc4 | 9785 | indices.resize (indices.size () + 2); |
d4813f10 | 9786 | for (j = indices.size () - 1; j >= i + 2; j -= 1) |
52ce6436 PH |
9787 | indices[j] = indices[j - 2]; |
9788 | indices[i] = low; | |
9789 | indices[i + 1] = high; | |
9790 | } | |
9791 | ||
6e48bd2c JB |
9792 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
9793 | is different. */ | |
9794 | ||
9795 | static struct value * | |
b7e22850 | 9796 | ada_value_cast (struct type *type, struct value *arg2) |
6e48bd2c JB |
9797 | { |
9798 | if (type == ada_check_typedef (value_type (arg2))) | |
9799 | return arg2; | |
9800 | ||
6e48bd2c JB |
9801 | return value_cast (type, arg2); |
9802 | } | |
9803 | ||
284614f0 JB |
9804 | /* Evaluating Ada expressions, and printing their result. |
9805 | ------------------------------------------------------ | |
9806 | ||
21649b50 JB |
9807 | 1. Introduction: |
9808 | ---------------- | |
9809 | ||
284614f0 JB |
9810 | We usually evaluate an Ada expression in order to print its value. |
9811 | We also evaluate an expression in order to print its type, which | |
9812 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
9813 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
9814 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
9815 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
9816 | similar. | |
9817 | ||
9818 | Evaluating expressions is a little more complicated for Ada entities | |
9819 | than it is for entities in languages such as C. The main reason for | |
9820 | this is that Ada provides types whose definition might be dynamic. | |
9821 | One example of such types is variant records. Or another example | |
9822 | would be an array whose bounds can only be known at run time. | |
9823 | ||
9824 | The following description is a general guide as to what should be | |
9825 | done (and what should NOT be done) in order to evaluate an expression | |
9826 | involving such types, and when. This does not cover how the semantic | |
9827 | information is encoded by GNAT as this is covered separatly. For the | |
9828 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
9829 | in the GNAT sources. | |
9830 | ||
9831 | Ideally, we should embed each part of this description next to its | |
9832 | associated code. Unfortunately, the amount of code is so vast right | |
9833 | now that it's hard to see whether the code handling a particular | |
9834 | situation might be duplicated or not. One day, when the code is | |
9835 | cleaned up, this guide might become redundant with the comments | |
9836 | inserted in the code, and we might want to remove it. | |
9837 | ||
21649b50 JB |
9838 | 2. ``Fixing'' an Entity, the Simple Case: |
9839 | ----------------------------------------- | |
9840 | ||
284614f0 JB |
9841 | When evaluating Ada expressions, the tricky issue is that they may |
9842 | reference entities whose type contents and size are not statically | |
9843 | known. Consider for instance a variant record: | |
9844 | ||
9845 | type Rec (Empty : Boolean := True) is record | |
dda83cd7 SM |
9846 | case Empty is |
9847 | when True => null; | |
9848 | when False => Value : Integer; | |
9849 | end case; | |
284614f0 JB |
9850 | end record; |
9851 | Yes : Rec := (Empty => False, Value => 1); | |
9852 | No : Rec := (empty => True); | |
9853 | ||
9854 | The size and contents of that record depends on the value of the | |
9855 | descriminant (Rec.Empty). At this point, neither the debugging | |
9856 | information nor the associated type structure in GDB are able to | |
9857 | express such dynamic types. So what the debugger does is to create | |
9858 | "fixed" versions of the type that applies to the specific object. | |
30baf67b | 9859 | We also informally refer to this operation as "fixing" an object, |
284614f0 JB |
9860 | which means creating its associated fixed type. |
9861 | ||
9862 | Example: when printing the value of variable "Yes" above, its fixed | |
9863 | type would look like this: | |
9864 | ||
9865 | type Rec is record | |
dda83cd7 SM |
9866 | Empty : Boolean; |
9867 | Value : Integer; | |
284614f0 JB |
9868 | end record; |
9869 | ||
9870 | On the other hand, if we printed the value of "No", its fixed type | |
9871 | would become: | |
9872 | ||
9873 | type Rec is record | |
dda83cd7 | 9874 | Empty : Boolean; |
284614f0 JB |
9875 | end record; |
9876 | ||
9877 | Things become a little more complicated when trying to fix an entity | |
9878 | with a dynamic type that directly contains another dynamic type, | |
9879 | such as an array of variant records, for instance. There are | |
9880 | two possible cases: Arrays, and records. | |
9881 | ||
21649b50 JB |
9882 | 3. ``Fixing'' Arrays: |
9883 | --------------------- | |
9884 | ||
9885 | The type structure in GDB describes an array in terms of its bounds, | |
9886 | and the type of its elements. By design, all elements in the array | |
9887 | have the same type and we cannot represent an array of variant elements | |
9888 | using the current type structure in GDB. When fixing an array, | |
9889 | we cannot fix the array element, as we would potentially need one | |
9890 | fixed type per element of the array. As a result, the best we can do | |
9891 | when fixing an array is to produce an array whose bounds and size | |
9892 | are correct (allowing us to read it from memory), but without having | |
9893 | touched its element type. Fixing each element will be done later, | |
9894 | when (if) necessary. | |
9895 | ||
9896 | Arrays are a little simpler to handle than records, because the same | |
9897 | amount of memory is allocated for each element of the array, even if | |
1b536f04 | 9898 | the amount of space actually used by each element differs from element |
21649b50 | 9899 | to element. Consider for instance the following array of type Rec: |
284614f0 JB |
9900 | |
9901 | type Rec_Array is array (1 .. 2) of Rec; | |
9902 | ||
1b536f04 JB |
9903 | The actual amount of memory occupied by each element might be different |
9904 | from element to element, depending on the value of their discriminant. | |
21649b50 | 9905 | But the amount of space reserved for each element in the array remains |
1b536f04 | 9906 | fixed regardless. So we simply need to compute that size using |
21649b50 JB |
9907 | the debugging information available, from which we can then determine |
9908 | the array size (we multiply the number of elements of the array by | |
9909 | the size of each element). | |
9910 | ||
9911 | The simplest case is when we have an array of a constrained element | |
9912 | type. For instance, consider the following type declarations: | |
9913 | ||
dda83cd7 SM |
9914 | type Bounded_String (Max_Size : Integer) is |
9915 | Length : Integer; | |
9916 | Buffer : String (1 .. Max_Size); | |
9917 | end record; | |
9918 | type Bounded_String_Array is array (1 ..2) of Bounded_String (80); | |
21649b50 JB |
9919 | |
9920 | In this case, the compiler describes the array as an array of | |
9921 | variable-size elements (identified by its XVS suffix) for which | |
9922 | the size can be read in the parallel XVZ variable. | |
9923 | ||
9924 | In the case of an array of an unconstrained element type, the compiler | |
9925 | wraps the array element inside a private PAD type. This type should not | |
9926 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
284614f0 JB |
9927 | that we also use the adjective "aligner" in our code to designate |
9928 | these wrapper types. | |
9929 | ||
1b536f04 | 9930 | In some cases, the size allocated for each element is statically |
21649b50 JB |
9931 | known. In that case, the PAD type already has the correct size, |
9932 | and the array element should remain unfixed. | |
9933 | ||
9934 | But there are cases when this size is not statically known. | |
9935 | For instance, assuming that "Five" is an integer variable: | |
284614f0 | 9936 | |
dda83cd7 SM |
9937 | type Dynamic is array (1 .. Five) of Integer; |
9938 | type Wrapper (Has_Length : Boolean := False) is record | |
9939 | Data : Dynamic; | |
9940 | case Has_Length is | |
9941 | when True => Length : Integer; | |
9942 | when False => null; | |
9943 | end case; | |
9944 | end record; | |
9945 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
284614f0 | 9946 | |
dda83cd7 SM |
9947 | Hello : Wrapper_Array := (others => (Has_Length => True, |
9948 | Data => (others => 17), | |
9949 | Length => 1)); | |
284614f0 JB |
9950 | |
9951 | ||
9952 | The debugging info would describe variable Hello as being an | |
9953 | array of a PAD type. The size of that PAD type is not statically | |
9954 | known, but can be determined using a parallel XVZ variable. | |
9955 | In that case, a copy of the PAD type with the correct size should | |
9956 | be used for the fixed array. | |
9957 | ||
21649b50 JB |
9958 | 3. ``Fixing'' record type objects: |
9959 | ---------------------------------- | |
9960 | ||
9961 | Things are slightly different from arrays in the case of dynamic | |
284614f0 JB |
9962 | record types. In this case, in order to compute the associated |
9963 | fixed type, we need to determine the size and offset of each of | |
9964 | its components. This, in turn, requires us to compute the fixed | |
9965 | type of each of these components. | |
9966 | ||
9967 | Consider for instance the example: | |
9968 | ||
dda83cd7 SM |
9969 | type Bounded_String (Max_Size : Natural) is record |
9970 | Str : String (1 .. Max_Size); | |
9971 | Length : Natural; | |
9972 | end record; | |
9973 | My_String : Bounded_String (Max_Size => 10); | |
284614f0 JB |
9974 | |
9975 | In that case, the position of field "Length" depends on the size | |
9976 | of field Str, which itself depends on the value of the Max_Size | |
21649b50 | 9977 | discriminant. In order to fix the type of variable My_String, |
284614f0 JB |
9978 | we need to fix the type of field Str. Therefore, fixing a variant |
9979 | record requires us to fix each of its components. | |
9980 | ||
9981 | However, if a component does not have a dynamic size, the component | |
9982 | should not be fixed. In particular, fields that use a PAD type | |
9983 | should not fixed. Here is an example where this might happen | |
9984 | (assuming type Rec above): | |
9985 | ||
9986 | type Container (Big : Boolean) is record | |
dda83cd7 SM |
9987 | First : Rec; |
9988 | After : Integer; | |
9989 | case Big is | |
9990 | when True => Another : Integer; | |
9991 | when False => null; | |
9992 | end case; | |
284614f0 JB |
9993 | end record; |
9994 | My_Container : Container := (Big => False, | |
dda83cd7 SM |
9995 | First => (Empty => True), |
9996 | After => 42); | |
284614f0 JB |
9997 | |
9998 | In that example, the compiler creates a PAD type for component First, | |
9999 | whose size is constant, and then positions the component After just | |
10000 | right after it. The offset of component After is therefore constant | |
10001 | in this case. | |
10002 | ||
10003 | The debugger computes the position of each field based on an algorithm | |
10004 | that uses, among other things, the actual position and size of the field | |
21649b50 JB |
10005 | preceding it. Let's now imagine that the user is trying to print |
10006 | the value of My_Container. If the type fixing was recursive, we would | |
284614f0 JB |
10007 | end up computing the offset of field After based on the size of the |
10008 | fixed version of field First. And since in our example First has | |
10009 | only one actual field, the size of the fixed type is actually smaller | |
10010 | than the amount of space allocated to that field, and thus we would | |
10011 | compute the wrong offset of field After. | |
10012 | ||
21649b50 JB |
10013 | To make things more complicated, we need to watch out for dynamic |
10014 | components of variant records (identified by the ___XVL suffix in | |
10015 | the component name). Even if the target type is a PAD type, the size | |
10016 | of that type might not be statically known. So the PAD type needs | |
10017 | to be unwrapped and the resulting type needs to be fixed. Otherwise, | |
10018 | we might end up with the wrong size for our component. This can be | |
10019 | observed with the following type declarations: | |
284614f0 | 10020 | |
dda83cd7 SM |
10021 | type Octal is new Integer range 0 .. 7; |
10022 | type Octal_Array is array (Positive range <>) of Octal; | |
10023 | pragma Pack (Octal_Array); | |
284614f0 | 10024 | |
dda83cd7 SM |
10025 | type Octal_Buffer (Size : Positive) is record |
10026 | Buffer : Octal_Array (1 .. Size); | |
10027 | Length : Integer; | |
10028 | end record; | |
284614f0 JB |
10029 | |
10030 | In that case, Buffer is a PAD type whose size is unset and needs | |
10031 | to be computed by fixing the unwrapped type. | |
10032 | ||
21649b50 JB |
10033 | 4. When to ``Fix'' un-``Fixed'' sub-elements of an entity: |
10034 | ---------------------------------------------------------- | |
10035 | ||
10036 | Lastly, when should the sub-elements of an entity that remained unfixed | |
284614f0 JB |
10037 | thus far, be actually fixed? |
10038 | ||
10039 | The answer is: Only when referencing that element. For instance | |
10040 | when selecting one component of a record, this specific component | |
10041 | should be fixed at that point in time. Or when printing the value | |
10042 | of a record, each component should be fixed before its value gets | |
10043 | printed. Similarly for arrays, the element of the array should be | |
10044 | fixed when printing each element of the array, or when extracting | |
10045 | one element out of that array. On the other hand, fixing should | |
10046 | not be performed on the elements when taking a slice of an array! | |
10047 | ||
31432a67 | 10048 | Note that one of the side effects of miscomputing the offset and |
284614f0 JB |
10049 | size of each field is that we end up also miscomputing the size |
10050 | of the containing type. This can have adverse results when computing | |
10051 | the value of an entity. GDB fetches the value of an entity based | |
10052 | on the size of its type, and thus a wrong size causes GDB to fetch | |
10053 | the wrong amount of memory. In the case where the computed size is | |
10054 | too small, GDB fetches too little data to print the value of our | |
31432a67 | 10055 | entity. Results in this case are unpredictable, as we usually read |
284614f0 JB |
10056 | past the buffer containing the data =:-o. */ |
10057 | ||
62d4bd94 TT |
10058 | /* A helper function for TERNOP_IN_RANGE. */ |
10059 | ||
10060 | static value * | |
10061 | eval_ternop_in_range (struct type *expect_type, struct expression *exp, | |
10062 | enum noside noside, | |
10063 | value *arg1, value *arg2, value *arg3) | |
10064 | { | |
62d4bd94 TT |
10065 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
10066 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
10067 | struct type *type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10068 | return | |
10069 | value_from_longest (type, | |
10070 | (value_less (arg1, arg3) | |
10071 | || value_equal (arg1, arg3)) | |
10072 | && (value_less (arg2, arg1) | |
10073 | || value_equal (arg2, arg1))); | |
10074 | } | |
10075 | ||
82390ab8 TT |
10076 | /* A helper function for UNOP_NEG. */ |
10077 | ||
7c15d377 | 10078 | value * |
82390ab8 TT |
10079 | ada_unop_neg (struct type *expect_type, |
10080 | struct expression *exp, | |
10081 | enum noside noside, enum exp_opcode op, | |
10082 | struct value *arg1) | |
10083 | { | |
82390ab8 TT |
10084 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
10085 | return value_neg (arg1); | |
10086 | } | |
10087 | ||
7efc87ff TT |
10088 | /* A helper function for UNOP_IN_RANGE. */ |
10089 | ||
95d49dfb | 10090 | value * |
7efc87ff TT |
10091 | ada_unop_in_range (struct type *expect_type, |
10092 | struct expression *exp, | |
10093 | enum noside noside, enum exp_opcode op, | |
10094 | struct value *arg1, struct type *type) | |
10095 | { | |
7efc87ff TT |
10096 | struct value *arg2, *arg3; |
10097 | switch (type->code ()) | |
10098 | { | |
10099 | default: | |
10100 | lim_warning (_("Membership test incompletely implemented; " | |
10101 | "always returns true")); | |
10102 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10103 | return value_from_longest (type, (LONGEST) 1); | |
10104 | ||
10105 | case TYPE_CODE_RANGE: | |
10106 | arg2 = value_from_longest (type, | |
10107 | type->bounds ()->low.const_val ()); | |
10108 | arg3 = value_from_longest (type, | |
10109 | type->bounds ()->high.const_val ()); | |
10110 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10111 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
10112 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10113 | return | |
10114 | value_from_longest (type, | |
10115 | (value_less (arg1, arg3) | |
10116 | || value_equal (arg1, arg3)) | |
10117 | && (value_less (arg2, arg1) | |
10118 | || value_equal (arg2, arg1))); | |
10119 | } | |
10120 | } | |
10121 | ||
020dbabe TT |
10122 | /* A helper function for OP_ATR_TAG. */ |
10123 | ||
7c15d377 | 10124 | value * |
020dbabe TT |
10125 | ada_atr_tag (struct type *expect_type, |
10126 | struct expression *exp, | |
10127 | enum noside noside, enum exp_opcode op, | |
10128 | struct value *arg1) | |
10129 | { | |
10130 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10131 | return value_zero (ada_tag_type (arg1), not_lval); | |
10132 | ||
10133 | return ada_value_tag (arg1); | |
10134 | } | |
10135 | ||
68c75735 TT |
10136 | /* A helper function for OP_ATR_SIZE. */ |
10137 | ||
7c15d377 | 10138 | value * |
68c75735 TT |
10139 | ada_atr_size (struct type *expect_type, |
10140 | struct expression *exp, | |
10141 | enum noside noside, enum exp_opcode op, | |
10142 | struct value *arg1) | |
10143 | { | |
10144 | struct type *type = value_type (arg1); | |
10145 | ||
10146 | /* If the argument is a reference, then dereference its type, since | |
10147 | the user is really asking for the size of the actual object, | |
10148 | not the size of the pointer. */ | |
10149 | if (type->code () == TYPE_CODE_REF) | |
10150 | type = TYPE_TARGET_TYPE (type); | |
10151 | ||
0b2b0b82 | 10152 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
68c75735 TT |
10153 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
10154 | else | |
10155 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, | |
10156 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); | |
10157 | } | |
10158 | ||
d05e24e6 TT |
10159 | /* A helper function for UNOP_ABS. */ |
10160 | ||
7c15d377 | 10161 | value * |
d05e24e6 TT |
10162 | ada_abs (struct type *expect_type, |
10163 | struct expression *exp, | |
10164 | enum noside noside, enum exp_opcode op, | |
10165 | struct value *arg1) | |
10166 | { | |
10167 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10168 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) | |
10169 | return value_neg (arg1); | |
10170 | else | |
10171 | return arg1; | |
10172 | } | |
10173 | ||
faa1dfd7 TT |
10174 | /* A helper function for BINOP_MUL. */ |
10175 | ||
d9e7db06 | 10176 | value * |
faa1dfd7 TT |
10177 | ada_mult_binop (struct type *expect_type, |
10178 | struct expression *exp, | |
10179 | enum noside noside, enum exp_opcode op, | |
10180 | struct value *arg1, struct value *arg2) | |
10181 | { | |
10182 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10183 | { | |
10184 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10185 | return value_zero (value_type (arg1), not_lval); | |
10186 | } | |
10187 | else | |
10188 | { | |
10189 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10190 | return ada_value_binop (arg1, arg2, op); | |
10191 | } | |
10192 | } | |
10193 | ||
214b13ac TT |
10194 | /* A helper function for BINOP_EQUAL and BINOP_NOTEQUAL. */ |
10195 | ||
6e8fb7b7 | 10196 | value * |
214b13ac TT |
10197 | ada_equal_binop (struct type *expect_type, |
10198 | struct expression *exp, | |
10199 | enum noside noside, enum exp_opcode op, | |
10200 | struct value *arg1, struct value *arg2) | |
10201 | { | |
10202 | int tem; | |
10203 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10204 | tem = 0; | |
10205 | else | |
10206 | { | |
10207 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10208 | tem = ada_value_equal (arg1, arg2); | |
10209 | } | |
10210 | if (op == BINOP_NOTEQUAL) | |
10211 | tem = !tem; | |
10212 | struct type *type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10213 | return value_from_longest (type, (LONGEST) tem); | |
10214 | } | |
10215 | ||
5ce19db8 TT |
10216 | /* A helper function for TERNOP_SLICE. */ |
10217 | ||
1b1ebfab | 10218 | value * |
5ce19db8 TT |
10219 | ada_ternop_slice (struct expression *exp, |
10220 | enum noside noside, | |
10221 | struct value *array, struct value *low_bound_val, | |
10222 | struct value *high_bound_val) | |
10223 | { | |
10224 | LONGEST low_bound; | |
10225 | LONGEST high_bound; | |
10226 | ||
10227 | low_bound_val = coerce_ref (low_bound_val); | |
10228 | high_bound_val = coerce_ref (high_bound_val); | |
10229 | low_bound = value_as_long (low_bound_val); | |
10230 | high_bound = value_as_long (high_bound_val); | |
10231 | ||
10232 | /* If this is a reference to an aligner type, then remove all | |
10233 | the aligners. */ | |
10234 | if (value_type (array)->code () == TYPE_CODE_REF | |
10235 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
10236 | TYPE_TARGET_TYPE (value_type (array)) = | |
10237 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
10238 | ||
10239 | if (ada_is_any_packed_array_type (value_type (array))) | |
10240 | error (_("cannot slice a packed array")); | |
10241 | ||
10242 | /* If this is a reference to an array or an array lvalue, | |
10243 | convert to a pointer. */ | |
10244 | if (value_type (array)->code () == TYPE_CODE_REF | |
10245 | || (value_type (array)->code () == TYPE_CODE_ARRAY | |
10246 | && VALUE_LVAL (array) == lval_memory)) | |
10247 | array = value_addr (array); | |
10248 | ||
10249 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
10250 | && ada_is_array_descriptor_type (ada_check_typedef | |
10251 | (value_type (array)))) | |
10252 | return empty_array (ada_type_of_array (array, 0), low_bound, | |
10253 | high_bound); | |
10254 | ||
10255 | array = ada_coerce_to_simple_array_ptr (array); | |
10256 | ||
10257 | /* If we have more than one level of pointer indirection, | |
10258 | dereference the value until we get only one level. */ | |
10259 | while (value_type (array)->code () == TYPE_CODE_PTR | |
10260 | && (TYPE_TARGET_TYPE (value_type (array))->code () | |
10261 | == TYPE_CODE_PTR)) | |
10262 | array = value_ind (array); | |
10263 | ||
10264 | /* Make sure we really do have an array type before going further, | |
10265 | to avoid a SEGV when trying to get the index type or the target | |
10266 | type later down the road if the debug info generated by | |
10267 | the compiler is incorrect or incomplete. */ | |
10268 | if (!ada_is_simple_array_type (value_type (array))) | |
10269 | error (_("cannot take slice of non-array")); | |
10270 | ||
10271 | if (ada_check_typedef (value_type (array))->code () | |
10272 | == TYPE_CODE_PTR) | |
10273 | { | |
10274 | struct type *type0 = ada_check_typedef (value_type (array)); | |
10275 | ||
10276 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) | |
10277 | return empty_array (TYPE_TARGET_TYPE (type0), low_bound, high_bound); | |
10278 | else | |
10279 | { | |
10280 | struct type *arr_type0 = | |
10281 | to_fixed_array_type (TYPE_TARGET_TYPE (type0), NULL, 1); | |
10282 | ||
10283 | return ada_value_slice_from_ptr (array, arr_type0, | |
10284 | longest_to_int (low_bound), | |
10285 | longest_to_int (high_bound)); | |
10286 | } | |
10287 | } | |
10288 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10289 | return array; | |
10290 | else if (high_bound < low_bound) | |
10291 | return empty_array (value_type (array), low_bound, high_bound); | |
10292 | else | |
10293 | return ada_value_slice (array, longest_to_int (low_bound), | |
10294 | longest_to_int (high_bound)); | |
10295 | } | |
10296 | ||
b467efaa TT |
10297 | /* A helper function for BINOP_IN_BOUNDS. */ |
10298 | ||
82c3886e | 10299 | value * |
b467efaa TT |
10300 | ada_binop_in_bounds (struct expression *exp, enum noside noside, |
10301 | struct value *arg1, struct value *arg2, int n) | |
10302 | { | |
10303 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10304 | { | |
10305 | struct type *type = language_bool_type (exp->language_defn, | |
10306 | exp->gdbarch); | |
10307 | return value_zero (type, not_lval); | |
10308 | } | |
10309 | ||
10310 | struct type *type = ada_index_type (value_type (arg2), n, "range"); | |
10311 | if (!type) | |
10312 | type = value_type (arg1); | |
10313 | ||
10314 | value *arg3 = value_from_longest (type, ada_array_bound (arg2, n, 1)); | |
10315 | arg2 = value_from_longest (type, ada_array_bound (arg2, n, 0)); | |
10316 | ||
10317 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10318 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
10319 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10320 | return value_from_longest (type, | |
10321 | (value_less (arg1, arg3) | |
10322 | || value_equal (arg1, arg3)) | |
10323 | && (value_less (arg2, arg1) | |
10324 | || value_equal (arg2, arg1))); | |
10325 | } | |
10326 | ||
b84564fc TT |
10327 | /* A helper function for some attribute operations. */ |
10328 | ||
10329 | static value * | |
10330 | ada_unop_atr (struct expression *exp, enum noside noside, enum exp_opcode op, | |
10331 | struct value *arg1, struct type *type_arg, int tem) | |
10332 | { | |
10333 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10334 | { | |
10335 | if (type_arg == NULL) | |
10336 | type_arg = value_type (arg1); | |
10337 | ||
10338 | if (ada_is_constrained_packed_array_type (type_arg)) | |
10339 | type_arg = decode_constrained_packed_array_type (type_arg); | |
10340 | ||
10341 | if (!discrete_type_p (type_arg)) | |
10342 | { | |
10343 | switch (op) | |
10344 | { | |
10345 | default: /* Should never happen. */ | |
10346 | error (_("unexpected attribute encountered")); | |
10347 | case OP_ATR_FIRST: | |
10348 | case OP_ATR_LAST: | |
10349 | type_arg = ada_index_type (type_arg, tem, | |
10350 | ada_attribute_name (op)); | |
10351 | break; | |
10352 | case OP_ATR_LENGTH: | |
10353 | type_arg = builtin_type (exp->gdbarch)->builtin_int; | |
10354 | break; | |
10355 | } | |
10356 | } | |
10357 | ||
10358 | return value_zero (type_arg, not_lval); | |
10359 | } | |
10360 | else if (type_arg == NULL) | |
10361 | { | |
10362 | arg1 = ada_coerce_ref (arg1); | |
10363 | ||
10364 | if (ada_is_constrained_packed_array_type (value_type (arg1))) | |
10365 | arg1 = ada_coerce_to_simple_array (arg1); | |
10366 | ||
10367 | struct type *type; | |
10368 | if (op == OP_ATR_LENGTH) | |
10369 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10370 | else | |
10371 | { | |
10372 | type = ada_index_type (value_type (arg1), tem, | |
10373 | ada_attribute_name (op)); | |
10374 | if (type == NULL) | |
10375 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10376 | } | |
10377 | ||
10378 | switch (op) | |
10379 | { | |
10380 | default: /* Should never happen. */ | |
10381 | error (_("unexpected attribute encountered")); | |
10382 | case OP_ATR_FIRST: | |
10383 | return value_from_longest | |
10384 | (type, ada_array_bound (arg1, tem, 0)); | |
10385 | case OP_ATR_LAST: | |
10386 | return value_from_longest | |
10387 | (type, ada_array_bound (arg1, tem, 1)); | |
10388 | case OP_ATR_LENGTH: | |
10389 | return value_from_longest | |
10390 | (type, ada_array_length (arg1, tem)); | |
10391 | } | |
10392 | } | |
10393 | else if (discrete_type_p (type_arg)) | |
10394 | { | |
10395 | struct type *range_type; | |
10396 | const char *name = ada_type_name (type_arg); | |
10397 | ||
10398 | range_type = NULL; | |
10399 | if (name != NULL && type_arg->code () != TYPE_CODE_ENUM) | |
10400 | range_type = to_fixed_range_type (type_arg, NULL); | |
10401 | if (range_type == NULL) | |
10402 | range_type = type_arg; | |
10403 | switch (op) | |
10404 | { | |
10405 | default: | |
10406 | error (_("unexpected attribute encountered")); | |
10407 | case OP_ATR_FIRST: | |
10408 | return value_from_longest | |
10409 | (range_type, ada_discrete_type_low_bound (range_type)); | |
10410 | case OP_ATR_LAST: | |
10411 | return value_from_longest | |
10412 | (range_type, ada_discrete_type_high_bound (range_type)); | |
10413 | case OP_ATR_LENGTH: | |
10414 | error (_("the 'length attribute applies only to array types")); | |
10415 | } | |
10416 | } | |
10417 | else if (type_arg->code () == TYPE_CODE_FLT) | |
10418 | error (_("unimplemented type attribute")); | |
10419 | else | |
10420 | { | |
10421 | LONGEST low, high; | |
10422 | ||
10423 | if (ada_is_constrained_packed_array_type (type_arg)) | |
10424 | type_arg = decode_constrained_packed_array_type (type_arg); | |
10425 | ||
10426 | struct type *type; | |
10427 | if (op == OP_ATR_LENGTH) | |
10428 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10429 | else | |
10430 | { | |
10431 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); | |
10432 | if (type == NULL) | |
10433 | type = builtin_type (exp->gdbarch)->builtin_int; | |
10434 | } | |
10435 | ||
10436 | switch (op) | |
10437 | { | |
10438 | default: | |
10439 | error (_("unexpected attribute encountered")); | |
10440 | case OP_ATR_FIRST: | |
10441 | low = ada_array_bound_from_type (type_arg, tem, 0); | |
10442 | return value_from_longest (type, low); | |
10443 | case OP_ATR_LAST: | |
10444 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
10445 | return value_from_longest (type, high); | |
10446 | case OP_ATR_LENGTH: | |
10447 | low = ada_array_bound_from_type (type_arg, tem, 0); | |
10448 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
10449 | return value_from_longest (type, high - low + 1); | |
10450 | } | |
10451 | } | |
10452 | } | |
10453 | ||
38dc70cf TT |
10454 | /* A helper function for OP_ATR_MIN and OP_ATR_MAX. */ |
10455 | ||
6ad3b8bf | 10456 | struct value * |
38dc70cf TT |
10457 | ada_binop_minmax (struct type *expect_type, |
10458 | struct expression *exp, | |
10459 | enum noside noside, enum exp_opcode op, | |
10460 | struct value *arg1, struct value *arg2) | |
10461 | { | |
10462 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10463 | return value_zero (value_type (arg1), not_lval); | |
10464 | else | |
10465 | { | |
10466 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
0922dc84 | 10467 | return value_binop (arg1, arg2, op); |
38dc70cf TT |
10468 | } |
10469 | } | |
10470 | ||
dd5fd283 TT |
10471 | /* A helper function for BINOP_EXP. */ |
10472 | ||
065ec826 | 10473 | struct value * |
dd5fd283 TT |
10474 | ada_binop_exp (struct type *expect_type, |
10475 | struct expression *exp, | |
10476 | enum noside noside, enum exp_opcode op, | |
10477 | struct value *arg1, struct value *arg2) | |
10478 | { | |
10479 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10480 | return value_zero (value_type (arg1), not_lval); | |
10481 | else | |
10482 | { | |
10483 | /* For integer exponentiation operations, | |
10484 | only promote the first argument. */ | |
10485 | if (is_integral_type (value_type (arg2))) | |
10486 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10487 | else | |
10488 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10489 | ||
10490 | return value_binop (arg1, arg2, op); | |
10491 | } | |
10492 | } | |
10493 | ||
03070ee9 TT |
10494 | namespace expr |
10495 | { | |
10496 | ||
8b12db26 TT |
10497 | /* See ada-exp.h. */ |
10498 | ||
10499 | operation_up | |
10500 | ada_resolvable::replace (operation_up &&owner, | |
10501 | struct expression *exp, | |
10502 | bool deprocedure_p, | |
10503 | bool parse_completion, | |
10504 | innermost_block_tracker *tracker, | |
10505 | struct type *context_type) | |
10506 | { | |
10507 | if (resolve (exp, deprocedure_p, parse_completion, tracker, context_type)) | |
10508 | return (make_operation<ada_funcall_operation> | |
10509 | (std::move (owner), | |
10510 | std::vector<operation_up> ())); | |
10511 | return std::move (owner); | |
10512 | } | |
10513 | ||
c9f66f00 | 10514 | /* Convert the character literal whose value would be VAL to the |
03adb248 TT |
10515 | appropriate value of type TYPE, if there is a translation. |
10516 | Otherwise return VAL. Hence, in an enumeration type ('A', 'B'), | |
10517 | the literal 'A' (VAL == 65), returns 0. */ | |
10518 | ||
10519 | static LONGEST | |
10520 | convert_char_literal (struct type *type, LONGEST val) | |
10521 | { | |
c9f66f00 | 10522 | char name[12]; |
03adb248 TT |
10523 | int f; |
10524 | ||
10525 | if (type == NULL) | |
10526 | return val; | |
10527 | type = check_typedef (type); | |
10528 | if (type->code () != TYPE_CODE_ENUM) | |
10529 | return val; | |
10530 | ||
10531 | if ((val >= 'a' && val <= 'z') || (val >= '0' && val <= '9')) | |
10532 | xsnprintf (name, sizeof (name), "Q%c", (int) val); | |
c9f66f00 TT |
10533 | else if (val >= 0 && val < 256) |
10534 | xsnprintf (name, sizeof (name), "QU%02x", (unsigned) val); | |
10535 | else if (val >= 0 && val < 0x10000) | |
10536 | xsnprintf (name, sizeof (name), "QW%04x", (unsigned) val); | |
03adb248 | 10537 | else |
c9f66f00 | 10538 | xsnprintf (name, sizeof (name), "QWW%08lx", (unsigned long) val); |
03adb248 TT |
10539 | size_t len = strlen (name); |
10540 | for (f = 0; f < type->num_fields (); f += 1) | |
10541 | { | |
10542 | /* Check the suffix because an enum constant in a package will | |
10543 | have a name like "pkg__QUxx". This is safe enough because we | |
10544 | already have the correct type, and because mangling means | |
10545 | there can't be clashes. */ | |
33d16dd9 | 10546 | const char *ename = type->field (f).name (); |
03adb248 TT |
10547 | size_t elen = strlen (ename); |
10548 | ||
10549 | if (elen >= len && strcmp (name, ename + elen - len) == 0) | |
970db518 | 10550 | return type->field (f).loc_enumval (); |
03adb248 TT |
10551 | } |
10552 | return val; | |
10553 | } | |
10554 | ||
b1b9c411 TT |
10555 | value * |
10556 | ada_char_operation::evaluate (struct type *expect_type, | |
10557 | struct expression *exp, | |
10558 | enum noside noside) | |
10559 | { | |
10560 | value *result = long_const_operation::evaluate (expect_type, exp, noside); | |
10561 | if (expect_type != nullptr) | |
10562 | result = ada_value_cast (expect_type, result); | |
10563 | return result; | |
10564 | } | |
10565 | ||
03adb248 TT |
10566 | /* See ada-exp.h. */ |
10567 | ||
10568 | operation_up | |
10569 | ada_char_operation::replace (operation_up &&owner, | |
10570 | struct expression *exp, | |
10571 | bool deprocedure_p, | |
10572 | bool parse_completion, | |
10573 | innermost_block_tracker *tracker, | |
10574 | struct type *context_type) | |
10575 | { | |
10576 | operation_up result = std::move (owner); | |
10577 | ||
10578 | if (context_type != nullptr && context_type->code () == TYPE_CODE_ENUM) | |
10579 | { | |
10580 | gdb_assert (result.get () == this); | |
10581 | std::get<0> (m_storage) = context_type; | |
10582 | std::get<1> (m_storage) | |
10583 | = convert_char_literal (context_type, std::get<1> (m_storage)); | |
10584 | } | |
10585 | ||
b1b9c411 | 10586 | return result; |
03adb248 TT |
10587 | } |
10588 | ||
03070ee9 TT |
10589 | value * |
10590 | ada_wrapped_operation::evaluate (struct type *expect_type, | |
10591 | struct expression *exp, | |
10592 | enum noside noside) | |
10593 | { | |
10594 | value *result = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); | |
10595 | if (noside == EVAL_NORMAL) | |
10596 | result = unwrap_value (result); | |
10597 | ||
10598 | /* If evaluating an OP_FLOAT and an EXPECT_TYPE was provided, | |
10599 | then we need to perform the conversion manually, because | |
10600 | evaluate_subexp_standard doesn't do it. This conversion is | |
10601 | necessary in Ada because the different kinds of float/fixed | |
10602 | types in Ada have different representations. | |
10603 | ||
10604 | Similarly, we need to perform the conversion from OP_LONG | |
10605 | ourselves. */ | |
10606 | if ((opcode () == OP_FLOAT || opcode () == OP_LONG) && expect_type != NULL) | |
10607 | result = ada_value_cast (expect_type, result); | |
10608 | ||
10609 | return result; | |
10610 | } | |
10611 | ||
42fecb61 TT |
10612 | value * |
10613 | ada_string_operation::evaluate (struct type *expect_type, | |
10614 | struct expression *exp, | |
10615 | enum noside noside) | |
10616 | { | |
fc18a21b TT |
10617 | struct type *char_type; |
10618 | if (expect_type != nullptr && ada_is_string_type (expect_type)) | |
10619 | char_type = ada_array_element_type (expect_type, 1); | |
10620 | else | |
10621 | char_type = language_string_char_type (exp->language_defn, exp->gdbarch); | |
10622 | ||
10623 | const std::string &str = std::get<0> (m_storage); | |
10624 | const char *encoding; | |
10625 | switch (TYPE_LENGTH (char_type)) | |
10626 | { | |
10627 | case 1: | |
10628 | { | |
10629 | /* Simply copy over the data -- this isn't perhaps strictly | |
10630 | correct according to the encodings, but it is gdb's | |
10631 | historical behavior. */ | |
10632 | struct type *stringtype | |
10633 | = lookup_array_range_type (char_type, 1, str.length ()); | |
10634 | struct value *val = allocate_value (stringtype); | |
10635 | memcpy (value_contents_raw (val).data (), str.c_str (), | |
10636 | str.length ()); | |
10637 | return val; | |
10638 | } | |
10639 | ||
10640 | case 2: | |
10641 | if (gdbarch_byte_order (exp->gdbarch) == BFD_ENDIAN_BIG) | |
10642 | encoding = "UTF-16BE"; | |
10643 | else | |
10644 | encoding = "UTF-16LE"; | |
10645 | break; | |
10646 | ||
10647 | case 4: | |
10648 | if (gdbarch_byte_order (exp->gdbarch) == BFD_ENDIAN_BIG) | |
10649 | encoding = "UTF-32BE"; | |
10650 | else | |
10651 | encoding = "UTF-32LE"; | |
10652 | break; | |
10653 | ||
10654 | default: | |
10655 | error (_("unexpected character type size %s"), | |
10656 | pulongest (TYPE_LENGTH (char_type))); | |
10657 | } | |
10658 | ||
10659 | auto_obstack converted; | |
10660 | convert_between_encodings (host_charset (), encoding, | |
10661 | (const gdb_byte *) str.c_str (), | |
10662 | str.length (), 1, | |
10663 | &converted, translit_none); | |
10664 | ||
10665 | struct type *stringtype | |
10666 | = lookup_array_range_type (char_type, 1, | |
10667 | obstack_object_size (&converted) | |
10668 | / TYPE_LENGTH (char_type)); | |
10669 | struct value *val = allocate_value (stringtype); | |
10670 | memcpy (value_contents_raw (val).data (), | |
10671 | obstack_base (&converted), | |
10672 | obstack_object_size (&converted)); | |
10673 | return val; | |
42fecb61 TT |
10674 | } |
10675 | ||
b1b9c411 TT |
10676 | value * |
10677 | ada_concat_operation::evaluate (struct type *expect_type, | |
10678 | struct expression *exp, | |
10679 | enum noside noside) | |
10680 | { | |
10681 | /* If one side is a literal, evaluate the other side first so that | |
10682 | the expected type can be set properly. */ | |
10683 | const operation_up &lhs_expr = std::get<0> (m_storage); | |
10684 | const operation_up &rhs_expr = std::get<1> (m_storage); | |
10685 | ||
10686 | value *lhs, *rhs; | |
10687 | if (dynamic_cast<ada_string_operation *> (lhs_expr.get ()) != nullptr) | |
10688 | { | |
10689 | rhs = rhs_expr->evaluate (nullptr, exp, noside); | |
10690 | lhs = lhs_expr->evaluate (value_type (rhs), exp, noside); | |
10691 | } | |
10692 | else if (dynamic_cast<ada_char_operation *> (lhs_expr.get ()) != nullptr) | |
10693 | { | |
10694 | rhs = rhs_expr->evaluate (nullptr, exp, noside); | |
10695 | struct type *rhs_type = check_typedef (value_type (rhs)); | |
10696 | struct type *elt_type = nullptr; | |
10697 | if (rhs_type->code () == TYPE_CODE_ARRAY) | |
10698 | elt_type = TYPE_TARGET_TYPE (rhs_type); | |
10699 | lhs = lhs_expr->evaluate (elt_type, exp, noside); | |
10700 | } | |
10701 | else if (dynamic_cast<ada_string_operation *> (rhs_expr.get ()) != nullptr) | |
10702 | { | |
10703 | lhs = lhs_expr->evaluate (nullptr, exp, noside); | |
10704 | rhs = rhs_expr->evaluate (value_type (lhs), exp, noside); | |
10705 | } | |
10706 | else if (dynamic_cast<ada_char_operation *> (rhs_expr.get ()) != nullptr) | |
10707 | { | |
10708 | lhs = lhs_expr->evaluate (nullptr, exp, noside); | |
10709 | struct type *lhs_type = check_typedef (value_type (lhs)); | |
10710 | struct type *elt_type = nullptr; | |
10711 | if (lhs_type->code () == TYPE_CODE_ARRAY) | |
10712 | elt_type = TYPE_TARGET_TYPE (lhs_type); | |
10713 | rhs = rhs_expr->evaluate (elt_type, exp, noside); | |
10714 | } | |
10715 | else | |
10716 | return concat_operation::evaluate (expect_type, exp, noside); | |
10717 | ||
10718 | return value_concat (lhs, rhs); | |
10719 | } | |
10720 | ||
cc6bd32e TT |
10721 | value * |
10722 | ada_qual_operation::evaluate (struct type *expect_type, | |
10723 | struct expression *exp, | |
10724 | enum noside noside) | |
10725 | { | |
10726 | struct type *type = std::get<1> (m_storage); | |
10727 | return std::get<0> (m_storage)->evaluate (type, exp, noside); | |
10728 | } | |
10729 | ||
fc715eb2 TT |
10730 | value * |
10731 | ada_ternop_range_operation::evaluate (struct type *expect_type, | |
10732 | struct expression *exp, | |
10733 | enum noside noside) | |
10734 | { | |
10735 | value *arg0 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
10736 | value *arg1 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); | |
10737 | value *arg2 = std::get<2> (m_storage)->evaluate (nullptr, exp, noside); | |
10738 | return eval_ternop_in_range (expect_type, exp, noside, arg0, arg1, arg2); | |
10739 | } | |
10740 | ||
73796c73 TT |
10741 | value * |
10742 | ada_binop_addsub_operation::evaluate (struct type *expect_type, | |
10743 | struct expression *exp, | |
10744 | enum noside noside) | |
10745 | { | |
10746 | value *arg1 = std::get<1> (m_storage)->evaluate_with_coercion (exp, noside); | |
10747 | value *arg2 = std::get<2> (m_storage)->evaluate_with_coercion (exp, noside); | |
10748 | ||
10749 | auto do_op = [=] (LONGEST x, LONGEST y) | |
10750 | { | |
10751 | if (std::get<0> (m_storage) == BINOP_ADD) | |
10752 | return x + y; | |
10753 | return x - y; | |
10754 | }; | |
10755 | ||
10756 | if (value_type (arg1)->code () == TYPE_CODE_PTR) | |
10757 | return (value_from_longest | |
10758 | (value_type (arg1), | |
10759 | do_op (value_as_long (arg1), value_as_long (arg2)))); | |
10760 | if (value_type (arg2)->code () == TYPE_CODE_PTR) | |
10761 | return (value_from_longest | |
10762 | (value_type (arg2), | |
10763 | do_op (value_as_long (arg1), value_as_long (arg2)))); | |
10764 | /* Preserve the original type for use by the range case below. | |
10765 | We cannot cast the result to a reference type, so if ARG1 is | |
10766 | a reference type, find its underlying type. */ | |
10767 | struct type *type = value_type (arg1); | |
10768 | while (type->code () == TYPE_CODE_REF) | |
10769 | type = TYPE_TARGET_TYPE (type); | |
10770 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10771 | arg1 = value_binop (arg1, arg2, std::get<0> (m_storage)); | |
10772 | /* We need to special-case the result with a range. | |
10773 | This is done for the benefit of "ptype". gdb's Ada support | |
10774 | historically used the LHS to set the result type here, so | |
10775 | preserve this behavior. */ | |
10776 | if (type->code () == TYPE_CODE_RANGE) | |
10777 | arg1 = value_cast (type, arg1); | |
10778 | return arg1; | |
10779 | } | |
10780 | ||
60fa02ca TT |
10781 | value * |
10782 | ada_unop_atr_operation::evaluate (struct type *expect_type, | |
10783 | struct expression *exp, | |
10784 | enum noside noside) | |
10785 | { | |
10786 | struct type *type_arg = nullptr; | |
10787 | value *val = nullptr; | |
10788 | ||
10789 | if (std::get<0> (m_storage)->opcode () == OP_TYPE) | |
10790 | { | |
10791 | value *tem = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
10792 | EVAL_AVOID_SIDE_EFFECTS); | |
10793 | type_arg = value_type (tem); | |
10794 | } | |
10795 | else | |
10796 | val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
10797 | ||
10798 | return ada_unop_atr (exp, noside, std::get<1> (m_storage), | |
10799 | val, type_arg, std::get<2> (m_storage)); | |
10800 | } | |
10801 | ||
3f4a0053 TT |
10802 | value * |
10803 | ada_var_msym_value_operation::evaluate_for_cast (struct type *expect_type, | |
10804 | struct expression *exp, | |
10805 | enum noside noside) | |
10806 | { | |
10807 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10808 | return value_zero (expect_type, not_lval); | |
10809 | ||
9c79936b TT |
10810 | const bound_minimal_symbol &b = std::get<0> (m_storage); |
10811 | value *val = evaluate_var_msym_value (noside, b.objfile, b.minsym); | |
3f4a0053 TT |
10812 | |
10813 | val = ada_value_cast (expect_type, val); | |
10814 | ||
10815 | /* Follow the Ada language semantics that do not allow taking | |
10816 | an address of the result of a cast (view conversion in Ada). */ | |
10817 | if (VALUE_LVAL (val) == lval_memory) | |
10818 | { | |
10819 | if (value_lazy (val)) | |
10820 | value_fetch_lazy (val); | |
10821 | VALUE_LVAL (val) = not_lval; | |
10822 | } | |
10823 | return val; | |
10824 | } | |
10825 | ||
99a3b1e7 TT |
10826 | value * |
10827 | ada_var_value_operation::evaluate_for_cast (struct type *expect_type, | |
10828 | struct expression *exp, | |
10829 | enum noside noside) | |
10830 | { | |
10831 | value *val = evaluate_var_value (noside, | |
9e5e03df TT |
10832 | std::get<0> (m_storage).block, |
10833 | std::get<0> (m_storage).symbol); | |
99a3b1e7 TT |
10834 | |
10835 | val = ada_value_cast (expect_type, val); | |
10836 | ||
10837 | /* Follow the Ada language semantics that do not allow taking | |
10838 | an address of the result of a cast (view conversion in Ada). */ | |
10839 | if (VALUE_LVAL (val) == lval_memory) | |
10840 | { | |
10841 | if (value_lazy (val)) | |
10842 | value_fetch_lazy (val); | |
10843 | VALUE_LVAL (val) = not_lval; | |
10844 | } | |
10845 | return val; | |
10846 | } | |
10847 | ||
10848 | value * | |
10849 | ada_var_value_operation::evaluate (struct type *expect_type, | |
10850 | struct expression *exp, | |
10851 | enum noside noside) | |
10852 | { | |
9e5e03df | 10853 | symbol *sym = std::get<0> (m_storage).symbol; |
99a3b1e7 | 10854 | |
6c9c307c | 10855 | if (sym->domain () == UNDEF_DOMAIN) |
99a3b1e7 TT |
10856 | /* Only encountered when an unresolved symbol occurs in a |
10857 | context other than a function call, in which case, it is | |
10858 | invalid. */ | |
10859 | error (_("Unexpected unresolved symbol, %s, during evaluation"), | |
10860 | sym->print_name ()); | |
10861 | ||
10862 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10863 | { | |
5f9c5a63 | 10864 | struct type *type = static_unwrap_type (sym->type ()); |
99a3b1e7 TT |
10865 | /* Check to see if this is a tagged type. We also need to handle |
10866 | the case where the type is a reference to a tagged type, but | |
10867 | we have to be careful to exclude pointers to tagged types. | |
10868 | The latter should be shown as usual (as a pointer), whereas | |
10869 | a reference should mostly be transparent to the user. */ | |
10870 | if (ada_is_tagged_type (type, 0) | |
10871 | || (type->code () == TYPE_CODE_REF | |
10872 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0))) | |
10873 | { | |
10874 | /* Tagged types are a little special in the fact that the real | |
10875 | type is dynamic and can only be determined by inspecting the | |
10876 | object's tag. This means that we need to get the object's | |
10877 | value first (EVAL_NORMAL) and then extract the actual object | |
10878 | type from its tag. | |
10879 | ||
10880 | Note that we cannot skip the final step where we extract | |
10881 | the object type from its tag, because the EVAL_NORMAL phase | |
10882 | results in dynamic components being resolved into fixed ones. | |
10883 | This can cause problems when trying to print the type | |
10884 | description of tagged types whose parent has a dynamic size: | |
10885 | We use the type name of the "_parent" component in order | |
10886 | to print the name of the ancestor type in the type description. | |
10887 | If that component had a dynamic size, the resolution into | |
10888 | a fixed type would result in the loss of that type name, | |
10889 | thus preventing us from printing the name of the ancestor | |
10890 | type in the type description. */ | |
9863c3b5 | 10891 | value *arg1 = evaluate (nullptr, exp, EVAL_NORMAL); |
99a3b1e7 TT |
10892 | |
10893 | if (type->code () != TYPE_CODE_REF) | |
10894 | { | |
10895 | struct type *actual_type; | |
10896 | ||
10897 | actual_type = type_from_tag (ada_value_tag (arg1)); | |
10898 | if (actual_type == NULL) | |
10899 | /* If, for some reason, we were unable to determine | |
10900 | the actual type from the tag, then use the static | |
10901 | approximation that we just computed as a fallback. | |
10902 | This can happen if the debugging information is | |
10903 | incomplete, for instance. */ | |
10904 | actual_type = type; | |
10905 | return value_zero (actual_type, not_lval); | |
10906 | } | |
10907 | else | |
10908 | { | |
10909 | /* In the case of a ref, ada_coerce_ref takes care | |
10910 | of determining the actual type. But the evaluation | |
10911 | should return a ref as it should be valid to ask | |
10912 | for its address; so rebuild a ref after coerce. */ | |
10913 | arg1 = ada_coerce_ref (arg1); | |
10914 | return value_ref (arg1, TYPE_CODE_REF); | |
10915 | } | |
10916 | } | |
10917 | ||
10918 | /* Records and unions for which GNAT encodings have been | |
10919 | generated need to be statically fixed as well. | |
10920 | Otherwise, non-static fixing produces a type where | |
10921 | all dynamic properties are removed, which prevents "ptype" | |
10922 | from being able to completely describe the type. | |
10923 | For instance, a case statement in a variant record would be | |
10924 | replaced by the relevant components based on the actual | |
10925 | value of the discriminants. */ | |
10926 | if ((type->code () == TYPE_CODE_STRUCT | |
10927 | && dynamic_template_type (type) != NULL) | |
10928 | || (type->code () == TYPE_CODE_UNION | |
10929 | && ada_find_parallel_type (type, "___XVU") != NULL)) | |
10930 | return value_zero (to_static_fixed_type (type), not_lval); | |
10931 | } | |
10932 | ||
10933 | value *arg1 = var_value_operation::evaluate (expect_type, exp, noside); | |
10934 | return ada_to_fixed_value (arg1); | |
10935 | } | |
10936 | ||
d8a4ed8a TT |
10937 | bool |
10938 | ada_var_value_operation::resolve (struct expression *exp, | |
10939 | bool deprocedure_p, | |
10940 | bool parse_completion, | |
10941 | innermost_block_tracker *tracker, | |
10942 | struct type *context_type) | |
10943 | { | |
9e5e03df | 10944 | symbol *sym = std::get<0> (m_storage).symbol; |
6c9c307c | 10945 | if (sym->domain () == UNDEF_DOMAIN) |
d8a4ed8a TT |
10946 | { |
10947 | block_symbol resolved | |
9e5e03df | 10948 | = ada_resolve_variable (sym, std::get<0> (m_storage).block, |
d8a4ed8a TT |
10949 | context_type, parse_completion, |
10950 | deprocedure_p, tracker); | |
9e5e03df | 10951 | std::get<0> (m_storage) = resolved; |
d8a4ed8a TT |
10952 | } |
10953 | ||
10954 | if (deprocedure_p | |
5f9c5a63 | 10955 | && (std::get<0> (m_storage).symbol->type ()->code () |
9e5e03df | 10956 | == TYPE_CODE_FUNC)) |
d8a4ed8a TT |
10957 | return true; |
10958 | ||
10959 | return false; | |
10960 | } | |
10961 | ||
9e99f48f TT |
10962 | value * |
10963 | ada_atr_val_operation::evaluate (struct type *expect_type, | |
10964 | struct expression *exp, | |
10965 | enum noside noside) | |
10966 | { | |
10967 | value *arg = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); | |
10968 | return ada_val_atr (noside, std::get<0> (m_storage), arg); | |
10969 | } | |
10970 | ||
e8c33fa1 TT |
10971 | value * |
10972 | ada_unop_ind_operation::evaluate (struct type *expect_type, | |
10973 | struct expression *exp, | |
10974 | enum noside noside) | |
10975 | { | |
10976 | value *arg1 = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); | |
10977 | ||
10978 | struct type *type = ada_check_typedef (value_type (arg1)); | |
10979 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10980 | { | |
10981 | if (ada_is_array_descriptor_type (type)) | |
10982 | /* GDB allows dereferencing GNAT array descriptors. */ | |
10983 | { | |
10984 | struct type *arrType = ada_type_of_array (arg1, 0); | |
10985 | ||
10986 | if (arrType == NULL) | |
10987 | error (_("Attempt to dereference null array pointer.")); | |
10988 | return value_at_lazy (arrType, 0); | |
10989 | } | |
10990 | else if (type->code () == TYPE_CODE_PTR | |
10991 | || type->code () == TYPE_CODE_REF | |
10992 | /* In C you can dereference an array to get the 1st elt. */ | |
10993 | || type->code () == TYPE_CODE_ARRAY) | |
10994 | { | |
10995 | /* As mentioned in the OP_VAR_VALUE case, tagged types can | |
10996 | only be determined by inspecting the object's tag. | |
10997 | This means that we need to evaluate completely the | |
10998 | expression in order to get its type. */ | |
10999 | ||
11000 | if ((type->code () == TYPE_CODE_REF | |
11001 | || type->code () == TYPE_CODE_PTR) | |
11002 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0)) | |
11003 | { | |
11004 | arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
11005 | EVAL_NORMAL); | |
11006 | type = value_type (ada_value_ind (arg1)); | |
11007 | } | |
11008 | else | |
11009 | { | |
11010 | type = to_static_fixed_type | |
11011 | (ada_aligned_type | |
11012 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
11013 | } | |
e8c33fa1 TT |
11014 | return value_zero (type, lval_memory); |
11015 | } | |
11016 | else if (type->code () == TYPE_CODE_INT) | |
11017 | { | |
11018 | /* GDB allows dereferencing an int. */ | |
11019 | if (expect_type == NULL) | |
11020 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
11021 | lval_memory); | |
11022 | else | |
11023 | { | |
11024 | expect_type = | |
11025 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
11026 | return value_zero (expect_type, lval_memory); | |
11027 | } | |
11028 | } | |
11029 | else | |
11030 | error (_("Attempt to take contents of a non-pointer value.")); | |
11031 | } | |
11032 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ | |
11033 | type = ada_check_typedef (value_type (arg1)); | |
11034 | ||
11035 | if (type->code () == TYPE_CODE_INT) | |
11036 | /* GDB allows dereferencing an int. If we were given | |
11037 | the expect_type, then use that as the target type. | |
11038 | Otherwise, assume that the target type is an int. */ | |
11039 | { | |
11040 | if (expect_type != NULL) | |
11041 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
11042 | arg1)); | |
11043 | else | |
11044 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
11045 | (CORE_ADDR) value_as_address (arg1)); | |
11046 | } | |
11047 | ||
11048 | if (ada_is_array_descriptor_type (type)) | |
11049 | /* GDB allows dereferencing GNAT array descriptors. */ | |
11050 | return ada_coerce_to_simple_array (arg1); | |
11051 | else | |
11052 | return ada_value_ind (arg1); | |
11053 | } | |
11054 | ||
ebc06ad8 TT |
11055 | value * |
11056 | ada_structop_operation::evaluate (struct type *expect_type, | |
11057 | struct expression *exp, | |
11058 | enum noside noside) | |
11059 | { | |
11060 | value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); | |
11061 | const char *str = std::get<1> (m_storage).c_str (); | |
11062 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11063 | { | |
11064 | struct type *type; | |
11065 | struct type *type1 = value_type (arg1); | |
11066 | ||
11067 | if (ada_is_tagged_type (type1, 1)) | |
11068 | { | |
11069 | type = ada_lookup_struct_elt_type (type1, str, 1, 1); | |
11070 | ||
11071 | /* If the field is not found, check if it exists in the | |
11072 | extension of this object's type. This means that we | |
11073 | need to evaluate completely the expression. */ | |
11074 | ||
11075 | if (type == NULL) | |
11076 | { | |
11077 | arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, | |
11078 | EVAL_NORMAL); | |
11079 | arg1 = ada_value_struct_elt (arg1, str, 0); | |
11080 | arg1 = unwrap_value (arg1); | |
11081 | type = value_type (ada_to_fixed_value (arg1)); | |
11082 | } | |
11083 | } | |
11084 | else | |
11085 | type = ada_lookup_struct_elt_type (type1, str, 1, 0); | |
11086 | ||
11087 | return value_zero (ada_aligned_type (type), lval_memory); | |
11088 | } | |
11089 | else | |
11090 | { | |
11091 | arg1 = ada_value_struct_elt (arg1, str, 0); | |
11092 | arg1 = unwrap_value (arg1); | |
11093 | return ada_to_fixed_value (arg1); | |
11094 | } | |
11095 | } | |
11096 | ||
efe3af2f TT |
11097 | value * |
11098 | ada_funcall_operation::evaluate (struct type *expect_type, | |
11099 | struct expression *exp, | |
11100 | enum noside noside) | |
11101 | { | |
11102 | const std::vector<operation_up> &args_up = std::get<1> (m_storage); | |
11103 | int nargs = args_up.size (); | |
11104 | std::vector<value *> argvec (nargs); | |
11105 | operation_up &callee_op = std::get<0> (m_storage); | |
11106 | ||
11107 | ada_var_value_operation *avv | |
11108 | = dynamic_cast<ada_var_value_operation *> (callee_op.get ()); | |
11109 | if (avv != nullptr | |
6c9c307c | 11110 | && avv->get_symbol ()->domain () == UNDEF_DOMAIN) |
efe3af2f TT |
11111 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
11112 | avv->get_symbol ()->print_name ()); | |
11113 | ||
11114 | value *callee = callee_op->evaluate (nullptr, exp, noside); | |
11115 | for (int i = 0; i < args_up.size (); ++i) | |
11116 | argvec[i] = args_up[i]->evaluate (nullptr, exp, noside); | |
11117 | ||
11118 | if (ada_is_constrained_packed_array_type | |
11119 | (desc_base_type (value_type (callee)))) | |
11120 | callee = ada_coerce_to_simple_array (callee); | |
11121 | else if (value_type (callee)->code () == TYPE_CODE_ARRAY | |
11122 | && TYPE_FIELD_BITSIZE (value_type (callee), 0) != 0) | |
11123 | /* This is a packed array that has already been fixed, and | |
11124 | therefore already coerced to a simple array. Nothing further | |
11125 | to do. */ | |
11126 | ; | |
11127 | else if (value_type (callee)->code () == TYPE_CODE_REF) | |
11128 | { | |
11129 | /* Make sure we dereference references so that all the code below | |
11130 | feels like it's really handling the referenced value. Wrapping | |
11131 | types (for alignment) may be there, so make sure we strip them as | |
11132 | well. */ | |
11133 | callee = ada_to_fixed_value (coerce_ref (callee)); | |
11134 | } | |
11135 | else if (value_type (callee)->code () == TYPE_CODE_ARRAY | |
11136 | && VALUE_LVAL (callee) == lval_memory) | |
11137 | callee = value_addr (callee); | |
11138 | ||
11139 | struct type *type = ada_check_typedef (value_type (callee)); | |
11140 | ||
11141 | /* Ada allows us to implicitly dereference arrays when subscripting | |
11142 | them. So, if this is an array typedef (encoding use for array | |
11143 | access types encoded as fat pointers), strip it now. */ | |
11144 | if (type->code () == TYPE_CODE_TYPEDEF) | |
11145 | type = ada_typedef_target_type (type); | |
11146 | ||
11147 | if (type->code () == TYPE_CODE_PTR) | |
11148 | { | |
11149 | switch (ada_check_typedef (TYPE_TARGET_TYPE (type))->code ()) | |
11150 | { | |
11151 | case TYPE_CODE_FUNC: | |
11152 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
11153 | break; | |
11154 | case TYPE_CODE_ARRAY: | |
11155 | break; | |
11156 | case TYPE_CODE_STRUCT: | |
11157 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
11158 | callee = ada_value_ind (callee); | |
11159 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); | |
11160 | break; | |
11161 | default: | |
11162 | error (_("cannot subscript or call something of type `%s'"), | |
11163 | ada_type_name (value_type (callee))); | |
11164 | break; | |
11165 | } | |
11166 | } | |
11167 | ||
11168 | switch (type->code ()) | |
11169 | { | |
11170 | case TYPE_CODE_FUNC: | |
11171 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11172 | { | |
11173 | if (TYPE_TARGET_TYPE (type) == NULL) | |
11174 | error_call_unknown_return_type (NULL); | |
11175 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
11176 | } | |
11177 | return call_function_by_hand (callee, NULL, argvec); | |
11178 | case TYPE_CODE_INTERNAL_FUNCTION: | |
11179 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11180 | /* We don't know anything about what the internal | |
11181 | function might return, but we have to return | |
11182 | something. */ | |
11183 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
11184 | not_lval); | |
11185 | else | |
11186 | return call_internal_function (exp->gdbarch, exp->language_defn, | |
11187 | callee, nargs, | |
11188 | argvec.data ()); | |
11189 | ||
d3c54a1c TT |
11190 | case TYPE_CODE_STRUCT: |
11191 | { | |
11192 | int arity; | |
4c4b4cd2 | 11193 | |
d3c54a1c TT |
11194 | arity = ada_array_arity (type); |
11195 | type = ada_array_element_type (type, nargs); | |
11196 | if (type == NULL) | |
11197 | error (_("cannot subscript or call a record")); | |
11198 | if (arity != nargs) | |
11199 | error (_("wrong number of subscripts; expecting %d"), arity); | |
11200 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
11201 | return value_zero (ada_aligned_type (type), lval_memory); | |
11202 | return | |
11203 | unwrap_value (ada_value_subscript | |
11204 | (callee, nargs, argvec.data ())); | |
11205 | } | |
11206 | case TYPE_CODE_ARRAY: | |
14f9c5c9 | 11207 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
dda83cd7 | 11208 | { |
d3c54a1c TT |
11209 | type = ada_array_element_type (type, nargs); |
11210 | if (type == NULL) | |
11211 | error (_("element type of array unknown")); | |
dda83cd7 | 11212 | else |
d3c54a1c | 11213 | return value_zero (ada_aligned_type (type), lval_memory); |
dda83cd7 | 11214 | } |
d3c54a1c TT |
11215 | return |
11216 | unwrap_value (ada_value_subscript | |
11217 | (ada_coerce_to_simple_array (callee), | |
11218 | nargs, argvec.data ())); | |
11219 | case TYPE_CODE_PTR: /* Pointer to array */ | |
11220 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
dda83cd7 | 11221 | { |
d3c54a1c TT |
11222 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); |
11223 | type = ada_array_element_type (type, nargs); | |
11224 | if (type == NULL) | |
11225 | error (_("element type of array unknown")); | |
96967637 | 11226 | else |
d3c54a1c | 11227 | return value_zero (ada_aligned_type (type), lval_memory); |
dda83cd7 | 11228 | } |
d3c54a1c TT |
11229 | return |
11230 | unwrap_value (ada_value_ptr_subscript (callee, nargs, | |
11231 | argvec.data ())); | |
6b0d7253 | 11232 | |
d3c54a1c TT |
11233 | default: |
11234 | error (_("Attempt to index or call something other than an " | |
11235 | "array or function")); | |
11236 | } | |
11237 | } | |
5b4ee69b | 11238 | |
d3c54a1c TT |
11239 | bool |
11240 | ada_funcall_operation::resolve (struct expression *exp, | |
11241 | bool deprocedure_p, | |
11242 | bool parse_completion, | |
11243 | innermost_block_tracker *tracker, | |
11244 | struct type *context_type) | |
11245 | { | |
11246 | operation_up &callee_op = std::get<0> (m_storage); | |
5ec18f2b | 11247 | |
d3c54a1c TT |
11248 | ada_var_value_operation *avv |
11249 | = dynamic_cast<ada_var_value_operation *> (callee_op.get ()); | |
11250 | if (avv == nullptr) | |
11251 | return false; | |
5ec18f2b | 11252 | |
d3c54a1c | 11253 | symbol *sym = avv->get_symbol (); |
6c9c307c | 11254 | if (sym->domain () != UNDEF_DOMAIN) |
d3c54a1c | 11255 | return false; |
dda83cd7 | 11256 | |
d3c54a1c TT |
11257 | const std::vector<operation_up> &args_up = std::get<1> (m_storage); |
11258 | int nargs = args_up.size (); | |
11259 | std::vector<value *> argvec (nargs); | |
284614f0 | 11260 | |
d3c54a1c TT |
11261 | for (int i = 0; i < args_up.size (); ++i) |
11262 | argvec[i] = args_up[i]->evaluate (nullptr, exp, EVAL_AVOID_SIDE_EFFECTS); | |
52ce6436 | 11263 | |
d3c54a1c TT |
11264 | const block *block = avv->get_block (); |
11265 | block_symbol resolved | |
11266 | = ada_resolve_funcall (sym, block, | |
11267 | context_type, parse_completion, | |
11268 | nargs, argvec.data (), | |
11269 | tracker); | |
11270 | ||
11271 | std::get<0> (m_storage) | |
9e5e03df | 11272 | = make_operation<ada_var_value_operation> (resolved); |
d3c54a1c TT |
11273 | return false; |
11274 | } | |
11275 | ||
11276 | bool | |
11277 | ada_ternop_slice_operation::resolve (struct expression *exp, | |
11278 | bool deprocedure_p, | |
11279 | bool parse_completion, | |
11280 | innermost_block_tracker *tracker, | |
11281 | struct type *context_type) | |
11282 | { | |
11283 | /* Historically this check was done during resolution, so we | |
11284 | continue that here. */ | |
11285 | value *v = std::get<0> (m_storage)->evaluate (context_type, exp, | |
11286 | EVAL_AVOID_SIDE_EFFECTS); | |
11287 | if (ada_is_any_packed_array_type (value_type (v))) | |
11288 | error (_("cannot slice a packed array")); | |
11289 | return false; | |
11290 | } | |
14f9c5c9 | 11291 | |
14f9c5c9 | 11292 | } |
d3c54a1c | 11293 | |
14f9c5c9 | 11294 | \f |
d2e4a39e | 11295 | |
4c4b4cd2 PH |
11296 | /* Return non-zero iff TYPE represents a System.Address type. */ |
11297 | ||
11298 | int | |
11299 | ada_is_system_address_type (struct type *type) | |
11300 | { | |
7d93a1e0 | 11301 | return (type->name () && strcmp (type->name (), "system__address") == 0); |
4c4b4cd2 PH |
11302 | } |
11303 | ||
14f9c5c9 | 11304 | \f |
d2e4a39e | 11305 | |
dda83cd7 | 11306 | /* Range types */ |
14f9c5c9 AS |
11307 | |
11308 | /* Scan STR beginning at position K for a discriminant name, and | |
11309 | return the value of that discriminant field of DVAL in *PX. If | |
11310 | PNEW_K is not null, put the position of the character beyond the | |
11311 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 11312 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
11313 | |
11314 | static int | |
108d56a4 | 11315 | scan_discrim_bound (const char *str, int k, struct value *dval, LONGEST * px, |
dda83cd7 | 11316 | int *pnew_k) |
14f9c5c9 | 11317 | { |
5f9febe0 | 11318 | static std::string storage; |
5da1a4d3 | 11319 | const char *pstart, *pend, *bound; |
d2e4a39e | 11320 | struct value *bound_val; |
14f9c5c9 AS |
11321 | |
11322 | if (dval == NULL || str == NULL || str[k] == '\0') | |
11323 | return 0; | |
11324 | ||
5da1a4d3 SM |
11325 | pstart = str + k; |
11326 | pend = strstr (pstart, "__"); | |
14f9c5c9 AS |
11327 | if (pend == NULL) |
11328 | { | |
5da1a4d3 | 11329 | bound = pstart; |
14f9c5c9 AS |
11330 | k += strlen (bound); |
11331 | } | |
d2e4a39e | 11332 | else |
14f9c5c9 | 11333 | { |
5da1a4d3 SM |
11334 | int len = pend - pstart; |
11335 | ||
11336 | /* Strip __ and beyond. */ | |
5f9febe0 TT |
11337 | storage = std::string (pstart, len); |
11338 | bound = storage.c_str (); | |
d2e4a39e | 11339 | k = pend - str; |
14f9c5c9 | 11340 | } |
d2e4a39e | 11341 | |
df407dfe | 11342 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
11343 | if (bound_val == NULL) |
11344 | return 0; | |
11345 | ||
11346 | *px = value_as_long (bound_val); | |
11347 | if (pnew_k != NULL) | |
11348 | *pnew_k = k; | |
11349 | return 1; | |
11350 | } | |
11351 | ||
25a1127b TT |
11352 | /* Value of variable named NAME. Only exact matches are considered. |
11353 | If no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
11354 | otherwise causes an error with message ERR_MSG. */ |
11355 | ||
d2e4a39e | 11356 | static struct value * |
edb0c9cb | 11357 | get_var_value (const char *name, const char *err_msg) |
14f9c5c9 | 11358 | { |
25a1127b TT |
11359 | std::string quoted_name = add_angle_brackets (name); |
11360 | ||
11361 | lookup_name_info lookup_name (quoted_name, symbol_name_match_type::FULL); | |
14f9c5c9 | 11362 | |
d1183b06 TT |
11363 | std::vector<struct block_symbol> syms |
11364 | = ada_lookup_symbol_list_worker (lookup_name, | |
11365 | get_selected_block (0), | |
11366 | VAR_DOMAIN, 1); | |
14f9c5c9 | 11367 | |
d1183b06 | 11368 | if (syms.size () != 1) |
14f9c5c9 AS |
11369 | { |
11370 | if (err_msg == NULL) | |
dda83cd7 | 11371 | return 0; |
14f9c5c9 | 11372 | else |
dda83cd7 | 11373 | error (("%s"), err_msg); |
14f9c5c9 AS |
11374 | } |
11375 | ||
54d343a2 | 11376 | return value_of_variable (syms[0].symbol, syms[0].block); |
14f9c5c9 | 11377 | } |
d2e4a39e | 11378 | |
edb0c9cb PA |
11379 | /* Value of integer variable named NAME in the current environment. |
11380 | If no such variable is found, returns false. Otherwise, sets VALUE | |
11381 | to the variable's value and returns true. */ | |
4c4b4cd2 | 11382 | |
edb0c9cb PA |
11383 | bool |
11384 | get_int_var_value (const char *name, LONGEST &value) | |
14f9c5c9 | 11385 | { |
4c4b4cd2 | 11386 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 11387 | |
14f9c5c9 | 11388 | if (var_val == 0) |
edb0c9cb PA |
11389 | return false; |
11390 | ||
11391 | value = value_as_long (var_val); | |
11392 | return true; | |
14f9c5c9 | 11393 | } |
d2e4a39e | 11394 | |
14f9c5c9 AS |
11395 | |
11396 | /* Return a range type whose base type is that of the range type named | |
11397 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 11398 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
11399 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
11400 | corresponding range type from debug information; fall back to using it | |
11401 | if symbol lookup fails. If a new type must be created, allocate it | |
11402 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
11403 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 11404 | |
d2e4a39e | 11405 | static struct type * |
28c85d6c | 11406 | to_fixed_range_type (struct type *raw_type, struct value *dval) |
14f9c5c9 | 11407 | { |
0d5cff50 | 11408 | const char *name; |
14f9c5c9 | 11409 | struct type *base_type; |
108d56a4 | 11410 | const char *subtype_info; |
14f9c5c9 | 11411 | |
28c85d6c | 11412 | gdb_assert (raw_type != NULL); |
7d93a1e0 | 11413 | gdb_assert (raw_type->name () != NULL); |
dddfab26 | 11414 | |
78134374 | 11415 | if (raw_type->code () == TYPE_CODE_RANGE) |
14f9c5c9 AS |
11416 | base_type = TYPE_TARGET_TYPE (raw_type); |
11417 | else | |
11418 | base_type = raw_type; | |
11419 | ||
7d93a1e0 | 11420 | name = raw_type->name (); |
14f9c5c9 AS |
11421 | subtype_info = strstr (name, "___XD"); |
11422 | if (subtype_info == NULL) | |
690cc4eb | 11423 | { |
43bbcdc2 PH |
11424 | LONGEST L = ada_discrete_type_low_bound (raw_type); |
11425 | LONGEST U = ada_discrete_type_high_bound (raw_type); | |
5b4ee69b | 11426 | |
690cc4eb PH |
11427 | if (L < INT_MIN || U > INT_MAX) |
11428 | return raw_type; | |
11429 | else | |
0c9c3474 SA |
11430 | return create_static_range_type (alloc_type_copy (raw_type), raw_type, |
11431 | L, U); | |
690cc4eb | 11432 | } |
14f9c5c9 AS |
11433 | else |
11434 | { | |
14f9c5c9 AS |
11435 | int prefix_len = subtype_info - name; |
11436 | LONGEST L, U; | |
11437 | struct type *type; | |
108d56a4 | 11438 | const char *bounds_str; |
14f9c5c9 AS |
11439 | int n; |
11440 | ||
14f9c5c9 AS |
11441 | subtype_info += 5; |
11442 | bounds_str = strchr (subtype_info, '_'); | |
11443 | n = 1; | |
11444 | ||
d2e4a39e | 11445 | if (*subtype_info == 'L') |
dda83cd7 SM |
11446 | { |
11447 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
11448 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
11449 | return raw_type; | |
11450 | if (bounds_str[n] == '_') | |
11451 | n += 2; | |
11452 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
11453 | n += 1; | |
11454 | subtype_info += 1; | |
11455 | } | |
d2e4a39e | 11456 | else |
dda83cd7 | 11457 | { |
5f9febe0 TT |
11458 | std::string name_buf = std::string (name, prefix_len) + "___L"; |
11459 | if (!get_int_var_value (name_buf.c_str (), L)) | |
dda83cd7 SM |
11460 | { |
11461 | lim_warning (_("Unknown lower bound, using 1.")); | |
11462 | L = 1; | |
11463 | } | |
11464 | } | |
14f9c5c9 | 11465 | |
d2e4a39e | 11466 | if (*subtype_info == 'U') |
dda83cd7 SM |
11467 | { |
11468 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
11469 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
11470 | return raw_type; | |
11471 | } | |
d2e4a39e | 11472 | else |
dda83cd7 | 11473 | { |
5f9febe0 TT |
11474 | std::string name_buf = std::string (name, prefix_len) + "___U"; |
11475 | if (!get_int_var_value (name_buf.c_str (), U)) | |
dda83cd7 SM |
11476 | { |
11477 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); | |
11478 | U = L; | |
11479 | } | |
11480 | } | |
14f9c5c9 | 11481 | |
0c9c3474 SA |
11482 | type = create_static_range_type (alloc_type_copy (raw_type), |
11483 | base_type, L, U); | |
f5a91472 | 11484 | /* create_static_range_type alters the resulting type's length |
dda83cd7 SM |
11485 | to match the size of the base_type, which is not what we want. |
11486 | Set it back to the original range type's length. */ | |
f5a91472 | 11487 | TYPE_LENGTH (type) = TYPE_LENGTH (raw_type); |
d0e39ea2 | 11488 | type->set_name (name); |
14f9c5c9 AS |
11489 | return type; |
11490 | } | |
11491 | } | |
11492 | ||
4c4b4cd2 PH |
11493 | /* True iff NAME is the name of a range type. */ |
11494 | ||
14f9c5c9 | 11495 | int |
d2e4a39e | 11496 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
11497 | { |
11498 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 11499 | } |
14f9c5c9 | 11500 | \f |
d2e4a39e | 11501 | |
dda83cd7 | 11502 | /* Modular types */ |
4c4b4cd2 PH |
11503 | |
11504 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 11505 | |
14f9c5c9 | 11506 | int |
d2e4a39e | 11507 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 11508 | { |
18af8284 | 11509 | struct type *subranged_type = get_base_type (type); |
14f9c5c9 | 11510 | |
78134374 | 11511 | return (subranged_type != NULL && type->code () == TYPE_CODE_RANGE |
dda83cd7 SM |
11512 | && subranged_type->code () == TYPE_CODE_INT |
11513 | && subranged_type->is_unsigned ()); | |
14f9c5c9 AS |
11514 | } |
11515 | ||
4c4b4cd2 PH |
11516 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
11517 | ||
61ee279c | 11518 | ULONGEST |
0056e4d5 | 11519 | ada_modulus (struct type *type) |
14f9c5c9 | 11520 | { |
5e500d33 SM |
11521 | const dynamic_prop &high = type->bounds ()->high; |
11522 | ||
11523 | if (high.kind () == PROP_CONST) | |
11524 | return (ULONGEST) high.const_val () + 1; | |
11525 | ||
11526 | /* If TYPE is unresolved, the high bound might be a location list. Return | |
11527 | 0, for lack of a better value to return. */ | |
11528 | return 0; | |
14f9c5c9 | 11529 | } |
d2e4a39e | 11530 | \f |
f7f9143b JB |
11531 | |
11532 | /* Ada exception catchpoint support: | |
11533 | --------------------------------- | |
11534 | ||
11535 | We support 3 kinds of exception catchpoints: | |
11536 | . catchpoints on Ada exceptions | |
11537 | . catchpoints on unhandled Ada exceptions | |
11538 | . catchpoints on failed assertions | |
11539 | ||
11540 | Exceptions raised during failed assertions, or unhandled exceptions | |
11541 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
11542 | However, we can easily differentiate these two special cases, and having | |
11543 | the option to distinguish these two cases from the rest can be useful | |
11544 | to zero-in on certain situations. | |
11545 | ||
11546 | Exception catchpoints are a specialized form of breakpoint, | |
11547 | since they rely on inserting breakpoints inside known routines | |
11548 | of the GNAT runtime. The implementation therefore uses a standard | |
11549 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
11550 | of breakpoint_ops. | |
11551 | ||
0259addd JB |
11552 | Support in the runtime for exception catchpoints have been changed |
11553 | a few times already, and these changes affect the implementation | |
11554 | of these catchpoints. In order to be able to support several | |
11555 | variants of the runtime, we use a sniffer that will determine | |
28010a5d | 11556 | the runtime variant used by the program being debugged. */ |
f7f9143b | 11557 | |
82eacd52 JB |
11558 | /* Ada's standard exceptions. |
11559 | ||
11560 | The Ada 83 standard also defined Numeric_Error. But there so many | |
11561 | situations where it was unclear from the Ada 83 Reference Manual | |
11562 | (RM) whether Constraint_Error or Numeric_Error should be raised, | |
11563 | that the ARG (Ada Rapporteur Group) eventually issued a Binding | |
11564 | Interpretation saying that anytime the RM says that Numeric_Error | |
11565 | should be raised, the implementation may raise Constraint_Error. | |
11566 | Ada 95 went one step further and pretty much removed Numeric_Error | |
11567 | from the list of standard exceptions (it made it a renaming of | |
11568 | Constraint_Error, to help preserve compatibility when compiling | |
11569 | an Ada83 compiler). As such, we do not include Numeric_Error from | |
11570 | this list of standard exceptions. */ | |
3d0b0fa3 | 11571 | |
27087b7f | 11572 | static const char * const standard_exc[] = { |
3d0b0fa3 JB |
11573 | "constraint_error", |
11574 | "program_error", | |
11575 | "storage_error", | |
11576 | "tasking_error" | |
11577 | }; | |
11578 | ||
0259addd JB |
11579 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
11580 | ||
11581 | /* A structure that describes how to support exception catchpoints | |
11582 | for a given executable. */ | |
11583 | ||
11584 | struct exception_support_info | |
11585 | { | |
11586 | /* The name of the symbol to break on in order to insert | |
11587 | a catchpoint on exceptions. */ | |
11588 | const char *catch_exception_sym; | |
11589 | ||
11590 | /* The name of the symbol to break on in order to insert | |
11591 | a catchpoint on unhandled exceptions. */ | |
11592 | const char *catch_exception_unhandled_sym; | |
11593 | ||
11594 | /* The name of the symbol to break on in order to insert | |
11595 | a catchpoint on failed assertions. */ | |
11596 | const char *catch_assert_sym; | |
11597 | ||
9f757bf7 XR |
11598 | /* The name of the symbol to break on in order to insert |
11599 | a catchpoint on exception handling. */ | |
11600 | const char *catch_handlers_sym; | |
11601 | ||
0259addd JB |
11602 | /* Assuming that the inferior just triggered an unhandled exception |
11603 | catchpoint, this function is responsible for returning the address | |
11604 | in inferior memory where the name of that exception is stored. | |
11605 | Return zero if the address could not be computed. */ | |
11606 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
11607 | }; | |
11608 | ||
11609 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
11610 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
11611 | ||
11612 | /* The following exception support info structure describes how to | |
11613 | implement exception catchpoints with the latest version of the | |
ca683e3a | 11614 | Ada runtime (as of 2019-08-??). */ |
0259addd JB |
11615 | |
11616 | static const struct exception_support_info default_exception_support_info = | |
ca683e3a AO |
11617 | { |
11618 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
11619 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11620 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
11621 | "__gnat_begin_handler_v1", /* catch_handlers_sym */ | |
11622 | ada_unhandled_exception_name_addr | |
11623 | }; | |
11624 | ||
11625 | /* The following exception support info structure describes how to | |
11626 | implement exception catchpoints with an earlier version of the | |
11627 | Ada runtime (as of 2007-03-06) using v0 of the EH ABI. */ | |
11628 | ||
11629 | static const struct exception_support_info exception_support_info_v0 = | |
0259addd JB |
11630 | { |
11631 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
11632 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11633 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 11634 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
11635 | ada_unhandled_exception_name_addr |
11636 | }; | |
11637 | ||
11638 | /* The following exception support info structure describes how to | |
11639 | implement exception catchpoints with a slightly older version | |
11640 | of the Ada runtime. */ | |
11641 | ||
11642 | static const struct exception_support_info exception_support_info_fallback = | |
11643 | { | |
11644 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
11645 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
11646 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9f757bf7 | 11647 | "__gnat_begin_handler", /* catch_handlers_sym */ |
0259addd JB |
11648 | ada_unhandled_exception_name_addr_from_raise |
11649 | }; | |
11650 | ||
f17011e0 JB |
11651 | /* Return nonzero if we can detect the exception support routines |
11652 | described in EINFO. | |
11653 | ||
11654 | This function errors out if an abnormal situation is detected | |
11655 | (for instance, if we find the exception support routines, but | |
11656 | that support is found to be incomplete). */ | |
11657 | ||
11658 | static int | |
11659 | ada_has_this_exception_support (const struct exception_support_info *einfo) | |
11660 | { | |
11661 | struct symbol *sym; | |
11662 | ||
11663 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
11664 | that should be compiled with debugging information. As a result, we | |
11665 | expect to find that symbol in the symtabs. */ | |
11666 | ||
11667 | sym = standard_lookup (einfo->catch_exception_sym, NULL, VAR_DOMAIN); | |
11668 | if (sym == NULL) | |
a6af7abe JB |
11669 | { |
11670 | /* Perhaps we did not find our symbol because the Ada runtime was | |
11671 | compiled without debugging info, or simply stripped of it. | |
11672 | It happens on some GNU/Linux distributions for instance, where | |
11673 | users have to install a separate debug package in order to get | |
11674 | the runtime's debugging info. In that situation, let the user | |
11675 | know why we cannot insert an Ada exception catchpoint. | |
11676 | ||
11677 | Note: Just for the purpose of inserting our Ada exception | |
11678 | catchpoint, we could rely purely on the associated minimal symbol. | |
11679 | But we would be operating in degraded mode anyway, since we are | |
11680 | still lacking the debugging info needed later on to extract | |
11681 | the name of the exception being raised (this name is printed in | |
11682 | the catchpoint message, and is also used when trying to catch | |
11683 | a specific exception). We do not handle this case for now. */ | |
3b7344d5 | 11684 | struct bound_minimal_symbol msym |
1c8e84b0 JB |
11685 | = lookup_minimal_symbol (einfo->catch_exception_sym, NULL, NULL); |
11686 | ||
3b7344d5 | 11687 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) |
a6af7abe JB |
11688 | error (_("Your Ada runtime appears to be missing some debugging " |
11689 | "information.\nCannot insert Ada exception catchpoint " | |
11690 | "in this configuration.")); | |
11691 | ||
11692 | return 0; | |
11693 | } | |
f17011e0 JB |
11694 | |
11695 | /* Make sure that the symbol we found corresponds to a function. */ | |
11696 | ||
66d7f48f | 11697 | if (sym->aclass () != LOC_BLOCK) |
ca683e3a AO |
11698 | { |
11699 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
66d7f48f | 11700 | sym->linkage_name (), sym->aclass ()); |
ca683e3a AO |
11701 | return 0; |
11702 | } | |
11703 | ||
11704 | sym = standard_lookup (einfo->catch_handlers_sym, NULL, VAR_DOMAIN); | |
11705 | if (sym == NULL) | |
11706 | { | |
11707 | struct bound_minimal_symbol msym | |
11708 | = lookup_minimal_symbol (einfo->catch_handlers_sym, NULL, NULL); | |
11709 | ||
11710 | if (msym.minsym && MSYMBOL_TYPE (msym.minsym) != mst_solib_trampoline) | |
11711 | error (_("Your Ada runtime appears to be missing some debugging " | |
11712 | "information.\nCannot insert Ada exception catchpoint " | |
11713 | "in this configuration.")); | |
11714 | ||
11715 | return 0; | |
11716 | } | |
11717 | ||
11718 | /* Make sure that the symbol we found corresponds to a function. */ | |
11719 | ||
66d7f48f | 11720 | if (sym->aclass () != LOC_BLOCK) |
ca683e3a AO |
11721 | { |
11722 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
66d7f48f | 11723 | sym->linkage_name (), sym->aclass ()); |
ca683e3a AO |
11724 | return 0; |
11725 | } | |
f17011e0 JB |
11726 | |
11727 | return 1; | |
11728 | } | |
11729 | ||
0259addd JB |
11730 | /* Inspect the Ada runtime and determine which exception info structure |
11731 | should be used to provide support for exception catchpoints. | |
11732 | ||
3eecfa55 JB |
11733 | This function will always set the per-inferior exception_info, |
11734 | or raise an error. */ | |
0259addd JB |
11735 | |
11736 | static void | |
11737 | ada_exception_support_info_sniffer (void) | |
11738 | { | |
3eecfa55 | 11739 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
0259addd JB |
11740 | |
11741 | /* If the exception info is already known, then no need to recompute it. */ | |
3eecfa55 | 11742 | if (data->exception_info != NULL) |
0259addd JB |
11743 | return; |
11744 | ||
11745 | /* Check the latest (default) exception support info. */ | |
f17011e0 | 11746 | if (ada_has_this_exception_support (&default_exception_support_info)) |
0259addd | 11747 | { |
3eecfa55 | 11748 | data->exception_info = &default_exception_support_info; |
0259addd JB |
11749 | return; |
11750 | } | |
11751 | ||
ca683e3a AO |
11752 | /* Try the v0 exception suport info. */ |
11753 | if (ada_has_this_exception_support (&exception_support_info_v0)) | |
11754 | { | |
11755 | data->exception_info = &exception_support_info_v0; | |
11756 | return; | |
11757 | } | |
11758 | ||
0259addd | 11759 | /* Try our fallback exception suport info. */ |
f17011e0 | 11760 | if (ada_has_this_exception_support (&exception_support_info_fallback)) |
0259addd | 11761 | { |
3eecfa55 | 11762 | data->exception_info = &exception_support_info_fallback; |
0259addd JB |
11763 | return; |
11764 | } | |
11765 | ||
11766 | /* Sometimes, it is normal for us to not be able to find the routine | |
11767 | we are looking for. This happens when the program is linked with | |
11768 | the shared version of the GNAT runtime, and the program has not been | |
11769 | started yet. Inform the user of these two possible causes if | |
11770 | applicable. */ | |
11771 | ||
ccefe4c4 | 11772 | if (ada_update_initial_language (language_unknown) != language_ada) |
0259addd JB |
11773 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); |
11774 | ||
11775 | /* If the symbol does not exist, then check that the program is | |
11776 | already started, to make sure that shared libraries have been | |
11777 | loaded. If it is not started, this may mean that the symbol is | |
11778 | in a shared library. */ | |
11779 | ||
e99b03dc | 11780 | if (inferior_ptid.pid () == 0) |
0259addd JB |
11781 | error (_("Unable to insert catchpoint. Try to start the program first.")); |
11782 | ||
11783 | /* At this point, we know that we are debugging an Ada program and | |
11784 | that the inferior has been started, but we still are not able to | |
0963b4bd | 11785 | find the run-time symbols. That can mean that we are in |
0259addd JB |
11786 | configurable run time mode, or that a-except as been optimized |
11787 | out by the linker... In any case, at this point it is not worth | |
11788 | supporting this feature. */ | |
11789 | ||
7dda8cff | 11790 | error (_("Cannot insert Ada exception catchpoints in this configuration.")); |
0259addd JB |
11791 | } |
11792 | ||
f7f9143b JB |
11793 | /* True iff FRAME is very likely to be that of a function that is |
11794 | part of the runtime system. This is all very heuristic, but is | |
11795 | intended to be used as advice as to what frames are uninteresting | |
11796 | to most users. */ | |
11797 | ||
11798 | static int | |
11799 | is_known_support_routine (struct frame_info *frame) | |
11800 | { | |
692465f1 | 11801 | enum language func_lang; |
f7f9143b | 11802 | int i; |
f35a17b5 | 11803 | const char *fullname; |
f7f9143b | 11804 | |
4ed6b5be JB |
11805 | /* If this code does not have any debugging information (no symtab), |
11806 | This cannot be any user code. */ | |
f7f9143b | 11807 | |
51abb421 | 11808 | symtab_and_line sal = find_frame_sal (frame); |
f7f9143b JB |
11809 | if (sal.symtab == NULL) |
11810 | return 1; | |
11811 | ||
4ed6b5be JB |
11812 | /* If there is a symtab, but the associated source file cannot be |
11813 | located, then assume this is not user code: Selecting a frame | |
11814 | for which we cannot display the code would not be very helpful | |
11815 | for the user. This should also take care of case such as VxWorks | |
11816 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 11817 | |
f35a17b5 JK |
11818 | fullname = symtab_to_fullname (sal.symtab); |
11819 | if (access (fullname, R_OK) != 0) | |
f7f9143b JB |
11820 | return 1; |
11821 | ||
85102364 | 11822 | /* Check the unit filename against the Ada runtime file naming. |
4ed6b5be JB |
11823 | We also check the name of the objfile against the name of some |
11824 | known system libraries that sometimes come with debugging info | |
11825 | too. */ | |
11826 | ||
f7f9143b JB |
11827 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
11828 | { | |
11829 | re_comp (known_runtime_file_name_patterns[i]); | |
f69c91ad | 11830 | if (re_exec (lbasename (sal.symtab->filename))) |
dda83cd7 | 11831 | return 1; |
65209971 SM |
11832 | if (sal.symtab->objfile () != NULL |
11833 | && re_exec (objfile_name (sal.symtab->objfile ()))) | |
dda83cd7 | 11834 | return 1; |
f7f9143b JB |
11835 | } |
11836 | ||
4ed6b5be | 11837 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 11838 | |
c6dc63a1 TT |
11839 | gdb::unique_xmalloc_ptr<char> func_name |
11840 | = find_frame_funname (frame, &func_lang, NULL); | |
f7f9143b JB |
11841 | if (func_name == NULL) |
11842 | return 1; | |
11843 | ||
11844 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
11845 | { | |
11846 | re_comp (known_auxiliary_function_name_patterns[i]); | |
c6dc63a1 TT |
11847 | if (re_exec (func_name.get ())) |
11848 | return 1; | |
f7f9143b JB |
11849 | } |
11850 | ||
11851 | return 0; | |
11852 | } | |
11853 | ||
11854 | /* Find the first frame that contains debugging information and that is not | |
11855 | part of the Ada run-time, starting from FI and moving upward. */ | |
11856 | ||
0ef643c8 | 11857 | void |
f7f9143b JB |
11858 | ada_find_printable_frame (struct frame_info *fi) |
11859 | { | |
11860 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
11861 | { | |
11862 | if (!is_known_support_routine (fi)) | |
dda83cd7 SM |
11863 | { |
11864 | select_frame (fi); | |
11865 | break; | |
11866 | } | |
f7f9143b JB |
11867 | } |
11868 | ||
11869 | } | |
11870 | ||
11871 | /* Assuming that the inferior just triggered an unhandled exception | |
11872 | catchpoint, return the address in inferior memory where the name | |
11873 | of the exception is stored. | |
11874 | ||
11875 | Return zero if the address could not be computed. */ | |
11876 | ||
11877 | static CORE_ADDR | |
11878 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
11879 | { |
11880 | return parse_and_eval_address ("e.full_name"); | |
11881 | } | |
11882 | ||
11883 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
11884 | should be used when the inferior uses an older version of the runtime, | |
11885 | where the exception name needs to be extracted from a specific frame | |
11886 | several frames up in the callstack. */ | |
11887 | ||
11888 | static CORE_ADDR | |
11889 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
11890 | { |
11891 | int frame_level; | |
11892 | struct frame_info *fi; | |
3eecfa55 | 11893 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
f7f9143b JB |
11894 | |
11895 | /* To determine the name of this exception, we need to select | |
11896 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
11897 | at least 3 levels up, so we simply skip the first 3 frames | |
11898 | without checking the name of their associated function. */ | |
11899 | fi = get_current_frame (); | |
11900 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
11901 | if (fi != NULL) | |
11902 | fi = get_prev_frame (fi); | |
11903 | ||
11904 | while (fi != NULL) | |
11905 | { | |
692465f1 JB |
11906 | enum language func_lang; |
11907 | ||
c6dc63a1 TT |
11908 | gdb::unique_xmalloc_ptr<char> func_name |
11909 | = find_frame_funname (fi, &func_lang, NULL); | |
55b87a52 KS |
11910 | if (func_name != NULL) |
11911 | { | |
dda83cd7 | 11912 | if (strcmp (func_name.get (), |
55b87a52 KS |
11913 | data->exception_info->catch_exception_sym) == 0) |
11914 | break; /* We found the frame we were looking for... */ | |
55b87a52 | 11915 | } |
fb44b1a7 | 11916 | fi = get_prev_frame (fi); |
f7f9143b JB |
11917 | } |
11918 | ||
11919 | if (fi == NULL) | |
11920 | return 0; | |
11921 | ||
11922 | select_frame (fi); | |
11923 | return parse_and_eval_address ("id.full_name"); | |
11924 | } | |
11925 | ||
11926 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
11927 | (of any type), return the address in inferior memory where the name | |
11928 | of the exception is stored, if applicable. | |
11929 | ||
45db7c09 PA |
11930 | Assumes the selected frame is the current frame. |
11931 | ||
f7f9143b JB |
11932 | Return zero if the address could not be computed, or if not relevant. */ |
11933 | ||
11934 | static CORE_ADDR | |
761269c8 | 11935 | ada_exception_name_addr_1 (enum ada_exception_catchpoint_kind ex, |
dda83cd7 | 11936 | struct breakpoint *b) |
f7f9143b | 11937 | { |
3eecfa55 JB |
11938 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
11939 | ||
f7f9143b JB |
11940 | switch (ex) |
11941 | { | |
761269c8 | 11942 | case ada_catch_exception: |
dda83cd7 SM |
11943 | return (parse_and_eval_address ("e.full_name")); |
11944 | break; | |
f7f9143b | 11945 | |
761269c8 | 11946 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
11947 | return data->exception_info->unhandled_exception_name_addr (); |
11948 | break; | |
9f757bf7 XR |
11949 | |
11950 | case ada_catch_handlers: | |
dda83cd7 | 11951 | return 0; /* The runtimes does not provide access to the exception |
9f757bf7 | 11952 | name. */ |
dda83cd7 | 11953 | break; |
9f757bf7 | 11954 | |
761269c8 | 11955 | case ada_catch_assert: |
dda83cd7 SM |
11956 | return 0; /* Exception name is not relevant in this case. */ |
11957 | break; | |
f7f9143b JB |
11958 | |
11959 | default: | |
dda83cd7 SM |
11960 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
11961 | break; | |
f7f9143b JB |
11962 | } |
11963 | ||
11964 | return 0; /* Should never be reached. */ | |
11965 | } | |
11966 | ||
e547c119 JB |
11967 | /* Assuming the inferior is stopped at an exception catchpoint, |
11968 | return the message which was associated to the exception, if | |
11969 | available. Return NULL if the message could not be retrieved. | |
11970 | ||
e547c119 JB |
11971 | Note: The exception message can be associated to an exception |
11972 | either through the use of the Raise_Exception function, or | |
11973 | more simply (Ada 2005 and later), via: | |
11974 | ||
11975 | raise Exception_Name with "exception message"; | |
11976 | ||
11977 | */ | |
11978 | ||
6f46ac85 | 11979 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
11980 | ada_exception_message_1 (void) |
11981 | { | |
11982 | struct value *e_msg_val; | |
e547c119 | 11983 | int e_msg_len; |
e547c119 JB |
11984 | |
11985 | /* For runtimes that support this feature, the exception message | |
11986 | is passed as an unbounded string argument called "message". */ | |
11987 | e_msg_val = parse_and_eval ("message"); | |
11988 | if (e_msg_val == NULL) | |
11989 | return NULL; /* Exception message not supported. */ | |
11990 | ||
11991 | e_msg_val = ada_coerce_to_simple_array (e_msg_val); | |
11992 | gdb_assert (e_msg_val != NULL); | |
11993 | e_msg_len = TYPE_LENGTH (value_type (e_msg_val)); | |
11994 | ||
11995 | /* If the message string is empty, then treat it as if there was | |
11996 | no exception message. */ | |
11997 | if (e_msg_len <= 0) | |
11998 | return NULL; | |
11999 | ||
15f3b077 TT |
12000 | gdb::unique_xmalloc_ptr<char> e_msg ((char *) xmalloc (e_msg_len + 1)); |
12001 | read_memory (value_address (e_msg_val), (gdb_byte *) e_msg.get (), | |
12002 | e_msg_len); | |
12003 | e_msg.get ()[e_msg_len] = '\0'; | |
12004 | ||
12005 | return e_msg; | |
e547c119 JB |
12006 | } |
12007 | ||
12008 | /* Same as ada_exception_message_1, except that all exceptions are | |
12009 | contained here (returning NULL instead). */ | |
12010 | ||
6f46ac85 | 12011 | static gdb::unique_xmalloc_ptr<char> |
e547c119 JB |
12012 | ada_exception_message (void) |
12013 | { | |
6f46ac85 | 12014 | gdb::unique_xmalloc_ptr<char> e_msg; |
e547c119 | 12015 | |
a70b8144 | 12016 | try |
e547c119 JB |
12017 | { |
12018 | e_msg = ada_exception_message_1 (); | |
12019 | } | |
230d2906 | 12020 | catch (const gdb_exception_error &e) |
e547c119 | 12021 | { |
6f46ac85 | 12022 | e_msg.reset (nullptr); |
e547c119 | 12023 | } |
e547c119 JB |
12024 | |
12025 | return e_msg; | |
12026 | } | |
12027 | ||
f7f9143b JB |
12028 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains |
12029 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
12030 | When an error is intercepted, a warning with the error message is printed, | |
12031 | and zero is returned. */ | |
12032 | ||
12033 | static CORE_ADDR | |
761269c8 | 12034 | ada_exception_name_addr (enum ada_exception_catchpoint_kind ex, |
dda83cd7 | 12035 | struct breakpoint *b) |
f7f9143b | 12036 | { |
f7f9143b JB |
12037 | CORE_ADDR result = 0; |
12038 | ||
a70b8144 | 12039 | try |
f7f9143b JB |
12040 | { |
12041 | result = ada_exception_name_addr_1 (ex, b); | |
12042 | } | |
12043 | ||
230d2906 | 12044 | catch (const gdb_exception_error &e) |
f7f9143b | 12045 | { |
3d6e9d23 | 12046 | warning (_("failed to get exception name: %s"), e.what ()); |
f7f9143b JB |
12047 | return 0; |
12048 | } | |
12049 | ||
12050 | return result; | |
12051 | } | |
12052 | ||
cb7de75e | 12053 | static std::string ada_exception_catchpoint_cond_string |
9f757bf7 XR |
12054 | (const char *excep_string, |
12055 | enum ada_exception_catchpoint_kind ex); | |
28010a5d PA |
12056 | |
12057 | /* Ada catchpoints. | |
12058 | ||
12059 | In the case of catchpoints on Ada exceptions, the catchpoint will | |
12060 | stop the target on every exception the program throws. When a user | |
12061 | specifies the name of a specific exception, we translate this | |
12062 | request into a condition expression (in text form), and then parse | |
12063 | it into an expression stored in each of the catchpoint's locations. | |
12064 | We then use this condition to check whether the exception that was | |
12065 | raised is the one the user is interested in. If not, then the | |
12066 | target is resumed again. We store the name of the requested | |
12067 | exception, in order to be able to re-set the condition expression | |
12068 | when symbols change. */ | |
12069 | ||
12070 | /* An instance of this type is used to represent an Ada catchpoint | |
5625a286 | 12071 | breakpoint location. */ |
28010a5d | 12072 | |
5625a286 | 12073 | class ada_catchpoint_location : public bp_location |
28010a5d | 12074 | { |
5625a286 | 12075 | public: |
5f486660 | 12076 | ada_catchpoint_location (breakpoint *owner) |
f06f1252 | 12077 | : bp_location (owner, bp_loc_software_breakpoint) |
5625a286 | 12078 | {} |
28010a5d PA |
12079 | |
12080 | /* The condition that checks whether the exception that was raised | |
12081 | is the specific exception the user specified on catchpoint | |
12082 | creation. */ | |
4d01a485 | 12083 | expression_up excep_cond_expr; |
28010a5d PA |
12084 | }; |
12085 | ||
c1fc2657 | 12086 | /* An instance of this type is used to represent an Ada catchpoint. */ |
28010a5d | 12087 | |
c1fc2657 | 12088 | struct ada_catchpoint : public breakpoint |
28010a5d | 12089 | { |
37f6a7f4 TT |
12090 | explicit ada_catchpoint (enum ada_exception_catchpoint_kind kind) |
12091 | : m_kind (kind) | |
12092 | { | |
12093 | } | |
12094 | ||
28010a5d | 12095 | /* The name of the specific exception the user specified. */ |
bc18fbb5 | 12096 | std::string excep_string; |
37f6a7f4 TT |
12097 | |
12098 | /* What kind of catchpoint this is. */ | |
12099 | enum ada_exception_catchpoint_kind m_kind; | |
28010a5d PA |
12100 | }; |
12101 | ||
12102 | /* Parse the exception condition string in the context of each of the | |
12103 | catchpoint's locations, and store them for later evaluation. */ | |
12104 | ||
12105 | static void | |
9f757bf7 | 12106 | create_excep_cond_exprs (struct ada_catchpoint *c, |
dda83cd7 | 12107 | enum ada_exception_catchpoint_kind ex) |
28010a5d | 12108 | { |
28010a5d | 12109 | /* Nothing to do if there's no specific exception to catch. */ |
bc18fbb5 | 12110 | if (c->excep_string.empty ()) |
28010a5d PA |
12111 | return; |
12112 | ||
12113 | /* Same if there are no locations... */ | |
c1fc2657 | 12114 | if (c->loc == NULL) |
28010a5d PA |
12115 | return; |
12116 | ||
fccf9de1 TT |
12117 | /* Compute the condition expression in text form, from the specific |
12118 | expection we want to catch. */ | |
12119 | std::string cond_string | |
12120 | = ada_exception_catchpoint_cond_string (c->excep_string.c_str (), ex); | |
28010a5d | 12121 | |
fccf9de1 TT |
12122 | /* Iterate over all the catchpoint's locations, and parse an |
12123 | expression for each. */ | |
40cb8ca5 | 12124 | for (bp_location *bl : c->locations ()) |
28010a5d PA |
12125 | { |
12126 | struct ada_catchpoint_location *ada_loc | |
fccf9de1 | 12127 | = (struct ada_catchpoint_location *) bl; |
4d01a485 | 12128 | expression_up exp; |
28010a5d | 12129 | |
fccf9de1 | 12130 | if (!bl->shlib_disabled) |
28010a5d | 12131 | { |
bbc13ae3 | 12132 | const char *s; |
28010a5d | 12133 | |
cb7de75e | 12134 | s = cond_string.c_str (); |
a70b8144 | 12135 | try |
28010a5d | 12136 | { |
fccf9de1 TT |
12137 | exp = parse_exp_1 (&s, bl->address, |
12138 | block_for_pc (bl->address), | |
036e657b | 12139 | 0); |
28010a5d | 12140 | } |
230d2906 | 12141 | catch (const gdb_exception_error &e) |
849f2b52 JB |
12142 | { |
12143 | warning (_("failed to reevaluate internal exception condition " | |
12144 | "for catchpoint %d: %s"), | |
3d6e9d23 | 12145 | c->number, e.what ()); |
849f2b52 | 12146 | } |
28010a5d PA |
12147 | } |
12148 | ||
b22e99fd | 12149 | ada_loc->excep_cond_expr = std::move (exp); |
28010a5d | 12150 | } |
28010a5d PA |
12151 | } |
12152 | ||
28010a5d PA |
12153 | /* Implement the ALLOCATE_LOCATION method in the breakpoint_ops |
12154 | structure for all exception catchpoint kinds. */ | |
12155 | ||
12156 | static struct bp_location * | |
37f6a7f4 | 12157 | allocate_location_exception (struct breakpoint *self) |
28010a5d | 12158 | { |
5f486660 | 12159 | return new ada_catchpoint_location (self); |
28010a5d PA |
12160 | } |
12161 | ||
12162 | /* Implement the RE_SET method in the breakpoint_ops structure for all | |
12163 | exception catchpoint kinds. */ | |
12164 | ||
12165 | static void | |
37f6a7f4 | 12166 | re_set_exception (struct breakpoint *b) |
28010a5d PA |
12167 | { |
12168 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
12169 | ||
12170 | /* Call the base class's method. This updates the catchpoint's | |
12171 | locations. */ | |
2060206e | 12172 | bkpt_breakpoint_ops.re_set (b); |
28010a5d PA |
12173 | |
12174 | /* Reparse the exception conditional expressions. One for each | |
12175 | location. */ | |
37f6a7f4 | 12176 | create_excep_cond_exprs (c, c->m_kind); |
28010a5d PA |
12177 | } |
12178 | ||
12179 | /* Returns true if we should stop for this breakpoint hit. If the | |
12180 | user specified a specific exception, we only want to cause a stop | |
12181 | if the program thrown that exception. */ | |
12182 | ||
7ebaa5f7 | 12183 | static bool |
28010a5d PA |
12184 | should_stop_exception (const struct bp_location *bl) |
12185 | { | |
12186 | struct ada_catchpoint *c = (struct ada_catchpoint *) bl->owner; | |
12187 | const struct ada_catchpoint_location *ada_loc | |
12188 | = (const struct ada_catchpoint_location *) bl; | |
7ebaa5f7 | 12189 | bool stop; |
28010a5d | 12190 | |
37f6a7f4 TT |
12191 | struct internalvar *var = lookup_internalvar ("_ada_exception"); |
12192 | if (c->m_kind == ada_catch_assert) | |
12193 | clear_internalvar (var); | |
12194 | else | |
12195 | { | |
12196 | try | |
12197 | { | |
12198 | const char *expr; | |
12199 | ||
12200 | if (c->m_kind == ada_catch_handlers) | |
12201 | expr = ("GNAT_GCC_exception_Access(gcc_exception)" | |
12202 | ".all.occurrence.id"); | |
12203 | else | |
12204 | expr = "e"; | |
12205 | ||
12206 | struct value *exc = parse_and_eval (expr); | |
12207 | set_internalvar (var, exc); | |
12208 | } | |
12209 | catch (const gdb_exception_error &ex) | |
12210 | { | |
12211 | clear_internalvar (var); | |
12212 | } | |
12213 | } | |
12214 | ||
28010a5d | 12215 | /* With no specific exception, should always stop. */ |
bc18fbb5 | 12216 | if (c->excep_string.empty ()) |
7ebaa5f7 | 12217 | return true; |
28010a5d PA |
12218 | |
12219 | if (ada_loc->excep_cond_expr == NULL) | |
12220 | { | |
12221 | /* We will have a NULL expression if back when we were creating | |
12222 | the expressions, this location's had failed to parse. */ | |
7ebaa5f7 | 12223 | return true; |
28010a5d PA |
12224 | } |
12225 | ||
7ebaa5f7 | 12226 | stop = true; |
a70b8144 | 12227 | try |
28010a5d PA |
12228 | { |
12229 | struct value *mark; | |
12230 | ||
12231 | mark = value_mark (); | |
4d01a485 | 12232 | stop = value_true (evaluate_expression (ada_loc->excep_cond_expr.get ())); |
28010a5d PA |
12233 | value_free_to_mark (mark); |
12234 | } | |
230d2906 | 12235 | catch (const gdb_exception &ex) |
492d29ea PA |
12236 | { |
12237 | exception_fprintf (gdb_stderr, ex, | |
12238 | _("Error in testing exception condition:\n")); | |
12239 | } | |
492d29ea | 12240 | |
28010a5d PA |
12241 | return stop; |
12242 | } | |
12243 | ||
12244 | /* Implement the CHECK_STATUS method in the breakpoint_ops structure | |
12245 | for all exception catchpoint kinds. */ | |
12246 | ||
12247 | static void | |
313f3b21 | 12248 | check_status_exception (bpstat *bs) |
28010a5d | 12249 | { |
b6433ede | 12250 | bs->stop = should_stop_exception (bs->bp_location_at.get ()); |
28010a5d PA |
12251 | } |
12252 | ||
f7f9143b JB |
12253 | /* Implement the PRINT_IT method in the breakpoint_ops structure |
12254 | for all exception catchpoint kinds. */ | |
12255 | ||
12256 | static enum print_stop_action | |
313f3b21 | 12257 | print_it_exception (bpstat *bs) |
f7f9143b | 12258 | { |
79a45e25 | 12259 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12260 | struct breakpoint *b = bs->breakpoint_at; |
12261 | ||
956a9fb9 | 12262 | annotate_catchpoint (b->number); |
f7f9143b | 12263 | |
112e8700 | 12264 | if (uiout->is_mi_like_p ()) |
f7f9143b | 12265 | { |
112e8700 | 12266 | uiout->field_string ("reason", |
956a9fb9 | 12267 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12268 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f7f9143b JB |
12269 | } |
12270 | ||
112e8700 SM |
12271 | uiout->text (b->disposition == disp_del |
12272 | ? "\nTemporary catchpoint " : "\nCatchpoint "); | |
381befee | 12273 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 12274 | uiout->text (", "); |
f7f9143b | 12275 | |
45db7c09 PA |
12276 | /* ada_exception_name_addr relies on the selected frame being the |
12277 | current frame. Need to do this here because this function may be | |
12278 | called more than once when printing a stop, and below, we'll | |
12279 | select the first frame past the Ada run-time (see | |
12280 | ada_find_printable_frame). */ | |
12281 | select_frame (get_current_frame ()); | |
12282 | ||
37f6a7f4 TT |
12283 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
12284 | switch (c->m_kind) | |
f7f9143b | 12285 | { |
761269c8 JB |
12286 | case ada_catch_exception: |
12287 | case ada_catch_exception_unhandled: | |
9f757bf7 | 12288 | case ada_catch_handlers: |
956a9fb9 | 12289 | { |
37f6a7f4 | 12290 | const CORE_ADDR addr = ada_exception_name_addr (c->m_kind, b); |
956a9fb9 JB |
12291 | char exception_name[256]; |
12292 | ||
12293 | if (addr != 0) | |
12294 | { | |
c714b426 PA |
12295 | read_memory (addr, (gdb_byte *) exception_name, |
12296 | sizeof (exception_name) - 1); | |
956a9fb9 JB |
12297 | exception_name [sizeof (exception_name) - 1] = '\0'; |
12298 | } | |
12299 | else | |
12300 | { | |
12301 | /* For some reason, we were unable to read the exception | |
12302 | name. This could happen if the Runtime was compiled | |
12303 | without debugging info, for instance. In that case, | |
12304 | just replace the exception name by the generic string | |
12305 | "exception" - it will read as "an exception" in the | |
12306 | notification we are about to print. */ | |
967cff16 | 12307 | memcpy (exception_name, "exception", sizeof ("exception")); |
956a9fb9 JB |
12308 | } |
12309 | /* In the case of unhandled exception breakpoints, we print | |
12310 | the exception name as "unhandled EXCEPTION_NAME", to make | |
12311 | it clearer to the user which kind of catchpoint just got | |
12312 | hit. We used ui_out_text to make sure that this extra | |
12313 | info does not pollute the exception name in the MI case. */ | |
37f6a7f4 | 12314 | if (c->m_kind == ada_catch_exception_unhandled) |
112e8700 SM |
12315 | uiout->text ("unhandled "); |
12316 | uiout->field_string ("exception-name", exception_name); | |
956a9fb9 JB |
12317 | } |
12318 | break; | |
761269c8 | 12319 | case ada_catch_assert: |
956a9fb9 JB |
12320 | /* In this case, the name of the exception is not really |
12321 | important. Just print "failed assertion" to make it clearer | |
12322 | that his program just hit an assertion-failure catchpoint. | |
12323 | We used ui_out_text because this info does not belong in | |
12324 | the MI output. */ | |
112e8700 | 12325 | uiout->text ("failed assertion"); |
956a9fb9 | 12326 | break; |
f7f9143b | 12327 | } |
e547c119 | 12328 | |
6f46ac85 | 12329 | gdb::unique_xmalloc_ptr<char> exception_message = ada_exception_message (); |
e547c119 JB |
12330 | if (exception_message != NULL) |
12331 | { | |
e547c119 | 12332 | uiout->text (" ("); |
6f46ac85 | 12333 | uiout->field_string ("exception-message", exception_message.get ()); |
e547c119 | 12334 | uiout->text (")"); |
e547c119 JB |
12335 | } |
12336 | ||
112e8700 | 12337 | uiout->text (" at "); |
956a9fb9 | 12338 | ada_find_printable_frame (get_current_frame ()); |
f7f9143b JB |
12339 | |
12340 | return PRINT_SRC_AND_LOC; | |
12341 | } | |
12342 | ||
12343 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
12344 | for all exception catchpoint kinds. */ | |
12345 | ||
12346 | static void | |
37f6a7f4 | 12347 | print_one_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 12348 | { |
79a45e25 | 12349 | struct ui_out *uiout = current_uiout; |
28010a5d | 12350 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45b7d TT |
12351 | struct value_print_options opts; |
12352 | ||
12353 | get_user_print_options (&opts); | |
f06f1252 | 12354 | |
79a45b7d | 12355 | if (opts.addressprint) |
f06f1252 | 12356 | uiout->field_skip ("addr"); |
f7f9143b JB |
12357 | |
12358 | annotate_field (5); | |
37f6a7f4 | 12359 | switch (c->m_kind) |
f7f9143b | 12360 | { |
761269c8 | 12361 | case ada_catch_exception: |
dda83cd7 SM |
12362 | if (!c->excep_string.empty ()) |
12363 | { | |
bc18fbb5 TT |
12364 | std::string msg = string_printf (_("`%s' Ada exception"), |
12365 | c->excep_string.c_str ()); | |
28010a5d | 12366 | |
dda83cd7 SM |
12367 | uiout->field_string ("what", msg); |
12368 | } | |
12369 | else | |
12370 | uiout->field_string ("what", "all Ada exceptions"); | |
12371 | ||
12372 | break; | |
f7f9143b | 12373 | |
761269c8 | 12374 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
12375 | uiout->field_string ("what", "unhandled Ada exceptions"); |
12376 | break; | |
f7f9143b | 12377 | |
9f757bf7 | 12378 | case ada_catch_handlers: |
dda83cd7 SM |
12379 | if (!c->excep_string.empty ()) |
12380 | { | |
9f757bf7 XR |
12381 | uiout->field_fmt ("what", |
12382 | _("`%s' Ada exception handlers"), | |
bc18fbb5 | 12383 | c->excep_string.c_str ()); |
dda83cd7 SM |
12384 | } |
12385 | else | |
9f757bf7 | 12386 | uiout->field_string ("what", "all Ada exceptions handlers"); |
dda83cd7 | 12387 | break; |
9f757bf7 | 12388 | |
761269c8 | 12389 | case ada_catch_assert: |
dda83cd7 SM |
12390 | uiout->field_string ("what", "failed Ada assertions"); |
12391 | break; | |
f7f9143b JB |
12392 | |
12393 | default: | |
dda83cd7 SM |
12394 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
12395 | break; | |
f7f9143b JB |
12396 | } |
12397 | } | |
12398 | ||
12399 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
12400 | for all exception catchpoint kinds. */ | |
12401 | ||
12402 | static void | |
37f6a7f4 | 12403 | print_mention_exception (struct breakpoint *b) |
f7f9143b | 12404 | { |
28010a5d | 12405 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45e25 | 12406 | struct ui_out *uiout = current_uiout; |
28010a5d | 12407 | |
112e8700 | 12408 | uiout->text (b->disposition == disp_del ? _("Temporary catchpoint ") |
dda83cd7 | 12409 | : _("Catchpoint ")); |
381befee | 12410 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 12411 | uiout->text (": "); |
00eb2c4a | 12412 | |
37f6a7f4 | 12413 | switch (c->m_kind) |
f7f9143b | 12414 | { |
761269c8 | 12415 | case ada_catch_exception: |
dda83cd7 | 12416 | if (!c->excep_string.empty ()) |
00eb2c4a | 12417 | { |
862d101a | 12418 | std::string info = string_printf (_("`%s' Ada exception"), |
bc18fbb5 | 12419 | c->excep_string.c_str ()); |
4915bfdc | 12420 | uiout->text (info); |
00eb2c4a | 12421 | } |
dda83cd7 SM |
12422 | else |
12423 | uiout->text (_("all Ada exceptions")); | |
12424 | break; | |
f7f9143b | 12425 | |
761269c8 | 12426 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
12427 | uiout->text (_("unhandled Ada exceptions")); |
12428 | break; | |
9f757bf7 XR |
12429 | |
12430 | case ada_catch_handlers: | |
dda83cd7 | 12431 | if (!c->excep_string.empty ()) |
9f757bf7 XR |
12432 | { |
12433 | std::string info | |
12434 | = string_printf (_("`%s' Ada exception handlers"), | |
bc18fbb5 | 12435 | c->excep_string.c_str ()); |
4915bfdc | 12436 | uiout->text (info); |
9f757bf7 | 12437 | } |
dda83cd7 SM |
12438 | else |
12439 | uiout->text (_("all Ada exceptions handlers")); | |
12440 | break; | |
9f757bf7 | 12441 | |
761269c8 | 12442 | case ada_catch_assert: |
dda83cd7 SM |
12443 | uiout->text (_("failed Ada assertions")); |
12444 | break; | |
f7f9143b JB |
12445 | |
12446 | default: | |
dda83cd7 SM |
12447 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); |
12448 | break; | |
f7f9143b JB |
12449 | } |
12450 | } | |
12451 | ||
6149aea9 PA |
12452 | /* Implement the PRINT_RECREATE method in the breakpoint_ops structure |
12453 | for all exception catchpoint kinds. */ | |
12454 | ||
12455 | static void | |
37f6a7f4 | 12456 | print_recreate_exception (struct breakpoint *b, struct ui_file *fp) |
6149aea9 | 12457 | { |
28010a5d PA |
12458 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
12459 | ||
37f6a7f4 | 12460 | switch (c->m_kind) |
6149aea9 | 12461 | { |
761269c8 | 12462 | case ada_catch_exception: |
6149aea9 | 12463 | fprintf_filtered (fp, "catch exception"); |
bc18fbb5 TT |
12464 | if (!c->excep_string.empty ()) |
12465 | fprintf_filtered (fp, " %s", c->excep_string.c_str ()); | |
6149aea9 PA |
12466 | break; |
12467 | ||
761269c8 | 12468 | case ada_catch_exception_unhandled: |
78076abc | 12469 | fprintf_filtered (fp, "catch exception unhandled"); |
6149aea9 PA |
12470 | break; |
12471 | ||
9f757bf7 XR |
12472 | case ada_catch_handlers: |
12473 | fprintf_filtered (fp, "catch handlers"); | |
12474 | break; | |
12475 | ||
761269c8 | 12476 | case ada_catch_assert: |
6149aea9 PA |
12477 | fprintf_filtered (fp, "catch assert"); |
12478 | break; | |
12479 | ||
12480 | default: | |
12481 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
12482 | } | |
d9b3f62e | 12483 | print_recreate_thread (b, fp); |
6149aea9 PA |
12484 | } |
12485 | ||
d66beefa | 12486 | /* Virtual table for breakpoint type. */ |
2060206e | 12487 | static struct breakpoint_ops catch_exception_breakpoint_ops; |
9f757bf7 | 12488 | |
f06f1252 TT |
12489 | /* See ada-lang.h. */ |
12490 | ||
12491 | bool | |
12492 | is_ada_exception_catchpoint (breakpoint *bp) | |
12493 | { | |
d66beefa | 12494 | return bp->ops == &catch_exception_breakpoint_ops; |
f06f1252 TT |
12495 | } |
12496 | ||
f7f9143b JB |
12497 | /* Split the arguments specified in a "catch exception" command. |
12498 | Set EX to the appropriate catchpoint type. | |
28010a5d | 12499 | Set EXCEP_STRING to the name of the specific exception if |
5845583d | 12500 | specified by the user. |
9f757bf7 XR |
12501 | IS_CATCH_HANDLERS_CMD: True if the arguments are for a |
12502 | "catch handlers" command. False otherwise. | |
5845583d JB |
12503 | If a condition is found at the end of the arguments, the condition |
12504 | expression is stored in COND_STRING (memory must be deallocated | |
12505 | after use). Otherwise COND_STRING is set to NULL. */ | |
f7f9143b JB |
12506 | |
12507 | static void | |
a121b7c1 | 12508 | catch_ada_exception_command_split (const char *args, |
9f757bf7 | 12509 | bool is_catch_handlers_cmd, |
dda83cd7 | 12510 | enum ada_exception_catchpoint_kind *ex, |
bc18fbb5 TT |
12511 | std::string *excep_string, |
12512 | std::string *cond_string) | |
f7f9143b | 12513 | { |
bc18fbb5 | 12514 | std::string exception_name; |
f7f9143b | 12515 | |
bc18fbb5 TT |
12516 | exception_name = extract_arg (&args); |
12517 | if (exception_name == "if") | |
5845583d JB |
12518 | { |
12519 | /* This is not an exception name; this is the start of a condition | |
12520 | expression for a catchpoint on all exceptions. So, "un-get" | |
12521 | this token, and set exception_name to NULL. */ | |
bc18fbb5 | 12522 | exception_name.clear (); |
5845583d JB |
12523 | args -= 2; |
12524 | } | |
f7f9143b | 12525 | |
5845583d | 12526 | /* Check to see if we have a condition. */ |
f7f9143b | 12527 | |
f1735a53 | 12528 | args = skip_spaces (args); |
61012eef | 12529 | if (startswith (args, "if") |
5845583d JB |
12530 | && (isspace (args[2]) || args[2] == '\0')) |
12531 | { | |
12532 | args += 2; | |
f1735a53 | 12533 | args = skip_spaces (args); |
5845583d JB |
12534 | |
12535 | if (args[0] == '\0') | |
dda83cd7 | 12536 | error (_("Condition missing after `if' keyword")); |
bc18fbb5 | 12537 | *cond_string = args; |
5845583d JB |
12538 | |
12539 | args += strlen (args); | |
12540 | } | |
12541 | ||
12542 | /* Check that we do not have any more arguments. Anything else | |
12543 | is unexpected. */ | |
f7f9143b JB |
12544 | |
12545 | if (args[0] != '\0') | |
12546 | error (_("Junk at end of expression")); | |
12547 | ||
9f757bf7 XR |
12548 | if (is_catch_handlers_cmd) |
12549 | { | |
12550 | /* Catch handling of exceptions. */ | |
12551 | *ex = ada_catch_handlers; | |
12552 | *excep_string = exception_name; | |
12553 | } | |
bc18fbb5 | 12554 | else if (exception_name.empty ()) |
f7f9143b JB |
12555 | { |
12556 | /* Catch all exceptions. */ | |
761269c8 | 12557 | *ex = ada_catch_exception; |
bc18fbb5 | 12558 | excep_string->clear (); |
f7f9143b | 12559 | } |
bc18fbb5 | 12560 | else if (exception_name == "unhandled") |
f7f9143b JB |
12561 | { |
12562 | /* Catch unhandled exceptions. */ | |
761269c8 | 12563 | *ex = ada_catch_exception_unhandled; |
bc18fbb5 | 12564 | excep_string->clear (); |
f7f9143b JB |
12565 | } |
12566 | else | |
12567 | { | |
12568 | /* Catch a specific exception. */ | |
761269c8 | 12569 | *ex = ada_catch_exception; |
28010a5d | 12570 | *excep_string = exception_name; |
f7f9143b JB |
12571 | } |
12572 | } | |
12573 | ||
12574 | /* Return the name of the symbol on which we should break in order to | |
12575 | implement a catchpoint of the EX kind. */ | |
12576 | ||
12577 | static const char * | |
761269c8 | 12578 | ada_exception_sym_name (enum ada_exception_catchpoint_kind ex) |
f7f9143b | 12579 | { |
3eecfa55 JB |
12580 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
12581 | ||
12582 | gdb_assert (data->exception_info != NULL); | |
0259addd | 12583 | |
f7f9143b JB |
12584 | switch (ex) |
12585 | { | |
761269c8 | 12586 | case ada_catch_exception: |
dda83cd7 SM |
12587 | return (data->exception_info->catch_exception_sym); |
12588 | break; | |
761269c8 | 12589 | case ada_catch_exception_unhandled: |
dda83cd7 SM |
12590 | return (data->exception_info->catch_exception_unhandled_sym); |
12591 | break; | |
761269c8 | 12592 | case ada_catch_assert: |
dda83cd7 SM |
12593 | return (data->exception_info->catch_assert_sym); |
12594 | break; | |
9f757bf7 | 12595 | case ada_catch_handlers: |
dda83cd7 SM |
12596 | return (data->exception_info->catch_handlers_sym); |
12597 | break; | |
f7f9143b | 12598 | default: |
dda83cd7 SM |
12599 | internal_error (__FILE__, __LINE__, |
12600 | _("unexpected catchpoint kind (%d)"), ex); | |
f7f9143b JB |
12601 | } |
12602 | } | |
12603 | ||
f7f9143b JB |
12604 | /* Return the condition that will be used to match the current exception |
12605 | being raised with the exception that the user wants to catch. This | |
12606 | assumes that this condition is used when the inferior just triggered | |
12607 | an exception catchpoint. | |
cb7de75e | 12608 | EX: the type of catchpoints used for catching Ada exceptions. */ |
f7f9143b | 12609 | |
cb7de75e | 12610 | static std::string |
9f757bf7 | 12611 | ada_exception_catchpoint_cond_string (const char *excep_string, |
dda83cd7 | 12612 | enum ada_exception_catchpoint_kind ex) |
f7f9143b | 12613 | { |
fccf9de1 | 12614 | bool is_standard_exc = false; |
cb7de75e | 12615 | std::string result; |
9f757bf7 XR |
12616 | |
12617 | if (ex == ada_catch_handlers) | |
12618 | { | |
12619 | /* For exception handlers catchpoints, the condition string does | |
dda83cd7 | 12620 | not use the same parameter as for the other exceptions. */ |
fccf9de1 TT |
12621 | result = ("long_integer (GNAT_GCC_exception_Access" |
12622 | "(gcc_exception).all.occurrence.id)"); | |
9f757bf7 XR |
12623 | } |
12624 | else | |
fccf9de1 | 12625 | result = "long_integer (e)"; |
3d0b0fa3 | 12626 | |
0963b4bd | 12627 | /* The standard exceptions are a special case. They are defined in |
3d0b0fa3 | 12628 | runtime units that have been compiled without debugging info; if |
28010a5d | 12629 | EXCEP_STRING is the not-fully-qualified name of a standard |
3d0b0fa3 JB |
12630 | exception (e.g. "constraint_error") then, during the evaluation |
12631 | of the condition expression, the symbol lookup on this name would | |
0963b4bd | 12632 | *not* return this standard exception. The catchpoint condition |
3d0b0fa3 JB |
12633 | may then be set only on user-defined exceptions which have the |
12634 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
12635 | ||
12636 | To avoid this unexcepted behavior, these standard exceptions are | |
0963b4bd | 12637 | systematically prefixed by "standard". This means that "catch |
3d0b0fa3 JB |
12638 | exception constraint_error" is rewritten into "catch exception |
12639 | standard.constraint_error". | |
12640 | ||
85102364 | 12641 | If an exception named constraint_error is defined in another package of |
3d0b0fa3 JB |
12642 | the inferior program, then the only way to specify this exception as a |
12643 | breakpoint condition is to use its fully-qualified named: | |
fccf9de1 | 12644 | e.g. my_package.constraint_error. */ |
3d0b0fa3 | 12645 | |
696d6f4d | 12646 | for (const char *name : standard_exc) |
3d0b0fa3 | 12647 | { |
696d6f4d | 12648 | if (strcmp (name, excep_string) == 0) |
3d0b0fa3 | 12649 | { |
fccf9de1 | 12650 | is_standard_exc = true; |
9f757bf7 | 12651 | break; |
3d0b0fa3 JB |
12652 | } |
12653 | } | |
9f757bf7 | 12654 | |
fccf9de1 TT |
12655 | result += " = "; |
12656 | ||
12657 | if (is_standard_exc) | |
12658 | string_appendf (result, "long_integer (&standard.%s)", excep_string); | |
12659 | else | |
12660 | string_appendf (result, "long_integer (&%s)", excep_string); | |
9f757bf7 | 12661 | |
9f757bf7 | 12662 | return result; |
f7f9143b JB |
12663 | } |
12664 | ||
12665 | /* Return the symtab_and_line that should be used to insert an exception | |
12666 | catchpoint of the TYPE kind. | |
12667 | ||
28010a5d PA |
12668 | ADDR_STRING returns the name of the function where the real |
12669 | breakpoint that implements the catchpoints is set, depending on the | |
12670 | type of catchpoint we need to create. */ | |
f7f9143b JB |
12671 | |
12672 | static struct symtab_and_line | |
bc18fbb5 | 12673 | ada_exception_sal (enum ada_exception_catchpoint_kind ex, |
cc12f4a8 | 12674 | std::string *addr_string, const struct breakpoint_ops **ops) |
f7f9143b JB |
12675 | { |
12676 | const char *sym_name; | |
12677 | struct symbol *sym; | |
f7f9143b | 12678 | |
0259addd JB |
12679 | /* First, find out which exception support info to use. */ |
12680 | ada_exception_support_info_sniffer (); | |
12681 | ||
12682 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b | 12683 | the Ada exceptions requested by the user. */ |
f7f9143b JB |
12684 | sym_name = ada_exception_sym_name (ex); |
12685 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
12686 | ||
57aff202 JB |
12687 | if (sym == NULL) |
12688 | error (_("Catchpoint symbol not found: %s"), sym_name); | |
12689 | ||
66d7f48f | 12690 | if (sym->aclass () != LOC_BLOCK) |
57aff202 | 12691 | error (_("Unable to insert catchpoint. %s is not a function."), sym_name); |
f7f9143b JB |
12692 | |
12693 | /* Set ADDR_STRING. */ | |
cc12f4a8 | 12694 | *addr_string = sym_name; |
f7f9143b | 12695 | |
f7f9143b | 12696 | /* Set OPS. */ |
d66beefa | 12697 | *ops = &catch_exception_breakpoint_ops; |
f7f9143b | 12698 | |
f17011e0 | 12699 | return find_function_start_sal (sym, 1); |
f7f9143b JB |
12700 | } |
12701 | ||
b4a5b78b | 12702 | /* Create an Ada exception catchpoint. |
f7f9143b | 12703 | |
b4a5b78b | 12704 | EX_KIND is the kind of exception catchpoint to be created. |
5845583d | 12705 | |
bc18fbb5 | 12706 | If EXCEPT_STRING is empty, this catchpoint is expected to trigger |
2df4d1d5 | 12707 | for all exceptions. Otherwise, EXCEPT_STRING indicates the name |
bc18fbb5 | 12708 | of the exception to which this catchpoint applies. |
2df4d1d5 | 12709 | |
bc18fbb5 | 12710 | COND_STRING, if not empty, is the catchpoint condition. |
f7f9143b | 12711 | |
b4a5b78b JB |
12712 | TEMPFLAG, if nonzero, means that the underlying breakpoint |
12713 | should be temporary. | |
28010a5d | 12714 | |
b4a5b78b | 12715 | FROM_TTY is the usual argument passed to all commands implementations. */ |
28010a5d | 12716 | |
349774ef | 12717 | void |
28010a5d | 12718 | create_ada_exception_catchpoint (struct gdbarch *gdbarch, |
761269c8 | 12719 | enum ada_exception_catchpoint_kind ex_kind, |
bc18fbb5 | 12720 | const std::string &excep_string, |
56ecd069 | 12721 | const std::string &cond_string, |
28010a5d | 12722 | int tempflag, |
349774ef | 12723 | int disabled, |
28010a5d PA |
12724 | int from_tty) |
12725 | { | |
cc12f4a8 | 12726 | std::string addr_string; |
b4a5b78b | 12727 | const struct breakpoint_ops *ops = NULL; |
bc18fbb5 | 12728 | struct symtab_and_line sal = ada_exception_sal (ex_kind, &addr_string, &ops); |
28010a5d | 12729 | |
37f6a7f4 | 12730 | std::unique_ptr<ada_catchpoint> c (new ada_catchpoint (ex_kind)); |
cc12f4a8 | 12731 | init_ada_exception_breakpoint (c.get (), gdbarch, sal, addr_string.c_str (), |
349774ef | 12732 | ops, tempflag, disabled, from_tty); |
28010a5d | 12733 | c->excep_string = excep_string; |
9f757bf7 | 12734 | create_excep_cond_exprs (c.get (), ex_kind); |
56ecd069 | 12735 | if (!cond_string.empty ()) |
733d554a | 12736 | set_breakpoint_condition (c.get (), cond_string.c_str (), from_tty, false); |
b270e6f9 | 12737 | install_breakpoint (0, std::move (c), 1); |
f7f9143b JB |
12738 | } |
12739 | ||
9ac4176b PA |
12740 | /* Implement the "catch exception" command. */ |
12741 | ||
12742 | static void | |
eb4c3f4a | 12743 | catch_ada_exception_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
12744 | struct cmd_list_element *command) |
12745 | { | |
a121b7c1 | 12746 | const char *arg = arg_entry; |
9ac4176b PA |
12747 | struct gdbarch *gdbarch = get_current_arch (); |
12748 | int tempflag; | |
761269c8 | 12749 | enum ada_exception_catchpoint_kind ex_kind; |
bc18fbb5 | 12750 | std::string excep_string; |
56ecd069 | 12751 | std::string cond_string; |
9ac4176b | 12752 | |
0f8e2034 | 12753 | tempflag = command->context () == CATCH_TEMPORARY; |
9ac4176b PA |
12754 | |
12755 | if (!arg) | |
12756 | arg = ""; | |
9f757bf7 | 12757 | catch_ada_exception_command_split (arg, false, &ex_kind, &excep_string, |
bc18fbb5 | 12758 | &cond_string); |
9f757bf7 XR |
12759 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
12760 | excep_string, cond_string, | |
12761 | tempflag, 1 /* enabled */, | |
12762 | from_tty); | |
12763 | } | |
12764 | ||
12765 | /* Implement the "catch handlers" command. */ | |
12766 | ||
12767 | static void | |
12768 | catch_ada_handlers_command (const char *arg_entry, int from_tty, | |
12769 | struct cmd_list_element *command) | |
12770 | { | |
12771 | const char *arg = arg_entry; | |
12772 | struct gdbarch *gdbarch = get_current_arch (); | |
12773 | int tempflag; | |
12774 | enum ada_exception_catchpoint_kind ex_kind; | |
bc18fbb5 | 12775 | std::string excep_string; |
56ecd069 | 12776 | std::string cond_string; |
9f757bf7 | 12777 | |
0f8e2034 | 12778 | tempflag = command->context () == CATCH_TEMPORARY; |
9f757bf7 XR |
12779 | |
12780 | if (!arg) | |
12781 | arg = ""; | |
12782 | catch_ada_exception_command_split (arg, true, &ex_kind, &excep_string, | |
bc18fbb5 | 12783 | &cond_string); |
b4a5b78b JB |
12784 | create_ada_exception_catchpoint (gdbarch, ex_kind, |
12785 | excep_string, cond_string, | |
349774ef JB |
12786 | tempflag, 1 /* enabled */, |
12787 | from_tty); | |
9ac4176b PA |
12788 | } |
12789 | ||
71bed2db TT |
12790 | /* Completion function for the Ada "catch" commands. */ |
12791 | ||
12792 | static void | |
12793 | catch_ada_completer (struct cmd_list_element *cmd, completion_tracker &tracker, | |
12794 | const char *text, const char *word) | |
12795 | { | |
12796 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (NULL); | |
12797 | ||
12798 | for (const ada_exc_info &info : exceptions) | |
12799 | { | |
12800 | if (startswith (info.name, word)) | |
b02f78f9 | 12801 | tracker.add_completion (make_unique_xstrdup (info.name)); |
71bed2db TT |
12802 | } |
12803 | } | |
12804 | ||
b4a5b78b | 12805 | /* Split the arguments specified in a "catch assert" command. |
5845583d | 12806 | |
b4a5b78b JB |
12807 | ARGS contains the command's arguments (or the empty string if |
12808 | no arguments were passed). | |
5845583d JB |
12809 | |
12810 | If ARGS contains a condition, set COND_STRING to that condition | |
b4a5b78b | 12811 | (the memory needs to be deallocated after use). */ |
5845583d | 12812 | |
b4a5b78b | 12813 | static void |
56ecd069 | 12814 | catch_ada_assert_command_split (const char *args, std::string &cond_string) |
f7f9143b | 12815 | { |
f1735a53 | 12816 | args = skip_spaces (args); |
f7f9143b | 12817 | |
5845583d | 12818 | /* Check whether a condition was provided. */ |
61012eef | 12819 | if (startswith (args, "if") |
5845583d | 12820 | && (isspace (args[2]) || args[2] == '\0')) |
f7f9143b | 12821 | { |
5845583d | 12822 | args += 2; |
f1735a53 | 12823 | args = skip_spaces (args); |
5845583d | 12824 | if (args[0] == '\0') |
dda83cd7 | 12825 | error (_("condition missing after `if' keyword")); |
56ecd069 | 12826 | cond_string.assign (args); |
f7f9143b JB |
12827 | } |
12828 | ||
5845583d JB |
12829 | /* Otherwise, there should be no other argument at the end of |
12830 | the command. */ | |
12831 | else if (args[0] != '\0') | |
12832 | error (_("Junk at end of arguments.")); | |
f7f9143b JB |
12833 | } |
12834 | ||
9ac4176b PA |
12835 | /* Implement the "catch assert" command. */ |
12836 | ||
12837 | static void | |
eb4c3f4a | 12838 | catch_assert_command (const char *arg_entry, int from_tty, |
9ac4176b PA |
12839 | struct cmd_list_element *command) |
12840 | { | |
a121b7c1 | 12841 | const char *arg = arg_entry; |
9ac4176b PA |
12842 | struct gdbarch *gdbarch = get_current_arch (); |
12843 | int tempflag; | |
56ecd069 | 12844 | std::string cond_string; |
9ac4176b | 12845 | |
0f8e2034 | 12846 | tempflag = command->context () == CATCH_TEMPORARY; |
9ac4176b PA |
12847 | |
12848 | if (!arg) | |
12849 | arg = ""; | |
56ecd069 | 12850 | catch_ada_assert_command_split (arg, cond_string); |
761269c8 | 12851 | create_ada_exception_catchpoint (gdbarch, ada_catch_assert, |
241db429 | 12852 | "", cond_string, |
349774ef JB |
12853 | tempflag, 1 /* enabled */, |
12854 | from_tty); | |
9ac4176b | 12855 | } |
778865d3 JB |
12856 | |
12857 | /* Return non-zero if the symbol SYM is an Ada exception object. */ | |
12858 | ||
12859 | static int | |
12860 | ada_is_exception_sym (struct symbol *sym) | |
12861 | { | |
5f9c5a63 | 12862 | const char *type_name = sym->type ()->name (); |
778865d3 | 12863 | |
66d7f48f SM |
12864 | return (sym->aclass () != LOC_TYPEDEF |
12865 | && sym->aclass () != LOC_BLOCK | |
12866 | && sym->aclass () != LOC_CONST | |
12867 | && sym->aclass () != LOC_UNRESOLVED | |
dda83cd7 | 12868 | && type_name != NULL && strcmp (type_name, "exception") == 0); |
778865d3 JB |
12869 | } |
12870 | ||
12871 | /* Given a global symbol SYM, return non-zero iff SYM is a non-standard | |
12872 | Ada exception object. This matches all exceptions except the ones | |
12873 | defined by the Ada language. */ | |
12874 | ||
12875 | static int | |
12876 | ada_is_non_standard_exception_sym (struct symbol *sym) | |
12877 | { | |
778865d3 JB |
12878 | if (!ada_is_exception_sym (sym)) |
12879 | return 0; | |
12880 | ||
696d6f4d TT |
12881 | for (const char *name : standard_exc) |
12882 | if (strcmp (sym->linkage_name (), name) == 0) | |
778865d3 JB |
12883 | return 0; /* A standard exception. */ |
12884 | ||
12885 | /* Numeric_Error is also a standard exception, so exclude it. | |
12886 | See the STANDARD_EXC description for more details as to why | |
12887 | this exception is not listed in that array. */ | |
987012b8 | 12888 | if (strcmp (sym->linkage_name (), "numeric_error") == 0) |
778865d3 JB |
12889 | return 0; |
12890 | ||
12891 | return 1; | |
12892 | } | |
12893 | ||
ab816a27 | 12894 | /* A helper function for std::sort, comparing two struct ada_exc_info |
778865d3 JB |
12895 | objects. |
12896 | ||
12897 | The comparison is determined first by exception name, and then | |
12898 | by exception address. */ | |
12899 | ||
ab816a27 | 12900 | bool |
cc536b21 | 12901 | ada_exc_info::operator< (const ada_exc_info &other) const |
778865d3 | 12902 | { |
778865d3 JB |
12903 | int result; |
12904 | ||
ab816a27 TT |
12905 | result = strcmp (name, other.name); |
12906 | if (result < 0) | |
12907 | return true; | |
12908 | if (result == 0 && addr < other.addr) | |
12909 | return true; | |
12910 | return false; | |
12911 | } | |
778865d3 | 12912 | |
ab816a27 | 12913 | bool |
cc536b21 | 12914 | ada_exc_info::operator== (const ada_exc_info &other) const |
ab816a27 TT |
12915 | { |
12916 | return addr == other.addr && strcmp (name, other.name) == 0; | |
778865d3 JB |
12917 | } |
12918 | ||
12919 | /* Sort EXCEPTIONS using compare_ada_exception_info as the comparison | |
12920 | routine, but keeping the first SKIP elements untouched. | |
12921 | ||
12922 | All duplicates are also removed. */ | |
12923 | ||
12924 | static void | |
ab816a27 | 12925 | sort_remove_dups_ada_exceptions_list (std::vector<ada_exc_info> *exceptions, |
778865d3 JB |
12926 | int skip) |
12927 | { | |
ab816a27 TT |
12928 | std::sort (exceptions->begin () + skip, exceptions->end ()); |
12929 | exceptions->erase (std::unique (exceptions->begin () + skip, exceptions->end ()), | |
12930 | exceptions->end ()); | |
778865d3 JB |
12931 | } |
12932 | ||
778865d3 JB |
12933 | /* Add all exceptions defined by the Ada standard whose name match |
12934 | a regular expression. | |
12935 | ||
12936 | If PREG is not NULL, then this regexp_t object is used to | |
12937 | perform the symbol name matching. Otherwise, no name-based | |
12938 | filtering is performed. | |
12939 | ||
12940 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
12941 | gets pushed. */ | |
12942 | ||
12943 | static void | |
2d7cc5c7 | 12944 | ada_add_standard_exceptions (compiled_regex *preg, |
ab816a27 | 12945 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 12946 | { |
696d6f4d | 12947 | for (const char *name : standard_exc) |
778865d3 | 12948 | { |
696d6f4d | 12949 | if (preg == NULL || preg->exec (name, 0, NULL, 0) == 0) |
778865d3 JB |
12950 | { |
12951 | struct bound_minimal_symbol msymbol | |
696d6f4d | 12952 | = ada_lookup_simple_minsym (name); |
778865d3 JB |
12953 | |
12954 | if (msymbol.minsym != NULL) | |
12955 | { | |
12956 | struct ada_exc_info info | |
696d6f4d | 12957 | = {name, BMSYMBOL_VALUE_ADDRESS (msymbol)}; |
778865d3 | 12958 | |
ab816a27 | 12959 | exceptions->push_back (info); |
778865d3 JB |
12960 | } |
12961 | } | |
12962 | } | |
12963 | } | |
12964 | ||
12965 | /* Add all Ada exceptions defined locally and accessible from the given | |
12966 | FRAME. | |
12967 | ||
12968 | If PREG is not NULL, then this regexp_t object is used to | |
12969 | perform the symbol name matching. Otherwise, no name-based | |
12970 | filtering is performed. | |
12971 | ||
12972 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
12973 | gets pushed. */ | |
12974 | ||
12975 | static void | |
2d7cc5c7 PA |
12976 | ada_add_exceptions_from_frame (compiled_regex *preg, |
12977 | struct frame_info *frame, | |
ab816a27 | 12978 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 12979 | { |
3977b71f | 12980 | const struct block *block = get_frame_block (frame, 0); |
778865d3 JB |
12981 | |
12982 | while (block != 0) | |
12983 | { | |
12984 | struct block_iterator iter; | |
12985 | struct symbol *sym; | |
12986 | ||
12987 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
12988 | { | |
66d7f48f | 12989 | switch (sym->aclass ()) |
778865d3 JB |
12990 | { |
12991 | case LOC_TYPEDEF: | |
12992 | case LOC_BLOCK: | |
12993 | case LOC_CONST: | |
12994 | break; | |
12995 | default: | |
12996 | if (ada_is_exception_sym (sym)) | |
12997 | { | |
987012b8 | 12998 | struct ada_exc_info info = {sym->print_name (), |
778865d3 JB |
12999 | SYMBOL_VALUE_ADDRESS (sym)}; |
13000 | ||
ab816a27 | 13001 | exceptions->push_back (info); |
778865d3 JB |
13002 | } |
13003 | } | |
13004 | } | |
13005 | if (BLOCK_FUNCTION (block) != NULL) | |
13006 | break; | |
13007 | block = BLOCK_SUPERBLOCK (block); | |
13008 | } | |
13009 | } | |
13010 | ||
14bc53a8 PA |
13011 | /* Return true if NAME matches PREG or if PREG is NULL. */ |
13012 | ||
13013 | static bool | |
2d7cc5c7 | 13014 | name_matches_regex (const char *name, compiled_regex *preg) |
14bc53a8 PA |
13015 | { |
13016 | return (preg == NULL | |
f945dedf | 13017 | || preg->exec (ada_decode (name).c_str (), 0, NULL, 0) == 0); |
14bc53a8 PA |
13018 | } |
13019 | ||
778865d3 JB |
13020 | /* Add all exceptions defined globally whose name name match |
13021 | a regular expression, excluding standard exceptions. | |
13022 | ||
13023 | The reason we exclude standard exceptions is that they need | |
13024 | to be handled separately: Standard exceptions are defined inside | |
13025 | a runtime unit which is normally not compiled with debugging info, | |
13026 | and thus usually do not show up in our symbol search. However, | |
13027 | if the unit was in fact built with debugging info, we need to | |
13028 | exclude them because they would duplicate the entry we found | |
13029 | during the special loop that specifically searches for those | |
13030 | standard exceptions. | |
13031 | ||
13032 | If PREG is not NULL, then this regexp_t object is used to | |
13033 | perform the symbol name matching. Otherwise, no name-based | |
13034 | filtering is performed. | |
13035 | ||
13036 | EXCEPTIONS is a vector of exceptions to which matching exceptions | |
13037 | gets pushed. */ | |
13038 | ||
13039 | static void | |
2d7cc5c7 | 13040 | ada_add_global_exceptions (compiled_regex *preg, |
ab816a27 | 13041 | std::vector<ada_exc_info> *exceptions) |
778865d3 | 13042 | { |
14bc53a8 PA |
13043 | /* In Ada, the symbol "search name" is a linkage name, whereas the |
13044 | regular expression used to do the matching refers to the natural | |
13045 | name. So match against the decoded name. */ | |
13046 | expand_symtabs_matching (NULL, | |
b5ec771e | 13047 | lookup_name_info::match_any (), |
14bc53a8 PA |
13048 | [&] (const char *search_name) |
13049 | { | |
f945dedf CB |
13050 | std::string decoded = ada_decode (search_name); |
13051 | return name_matches_regex (decoded.c_str (), preg); | |
14bc53a8 PA |
13052 | }, |
13053 | NULL, | |
03a8ea51 | 13054 | SEARCH_GLOBAL_BLOCK | SEARCH_STATIC_BLOCK, |
14bc53a8 | 13055 | VARIABLES_DOMAIN); |
778865d3 | 13056 | |
2030c079 | 13057 | for (objfile *objfile : current_program_space->objfiles ()) |
778865d3 | 13058 | { |
b669c953 | 13059 | for (compunit_symtab *s : objfile->compunits ()) |
778865d3 | 13060 | { |
af39c5c8 | 13061 | const struct blockvector *bv = s->blockvector (); |
d8aeb77f | 13062 | int i; |
778865d3 | 13063 | |
d8aeb77f TT |
13064 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
13065 | { | |
582942f4 | 13066 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
d8aeb77f TT |
13067 | struct block_iterator iter; |
13068 | struct symbol *sym; | |
778865d3 | 13069 | |
d8aeb77f TT |
13070 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
13071 | if (ada_is_non_standard_exception_sym (sym) | |
987012b8 | 13072 | && name_matches_regex (sym->natural_name (), preg)) |
d8aeb77f TT |
13073 | { |
13074 | struct ada_exc_info info | |
987012b8 | 13075 | = {sym->print_name (), SYMBOL_VALUE_ADDRESS (sym)}; |
d8aeb77f TT |
13076 | |
13077 | exceptions->push_back (info); | |
13078 | } | |
13079 | } | |
778865d3 JB |
13080 | } |
13081 | } | |
13082 | } | |
13083 | ||
13084 | /* Implements ada_exceptions_list with the regular expression passed | |
13085 | as a regex_t, rather than a string. | |
13086 | ||
13087 | If not NULL, PREG is used to filter out exceptions whose names | |
13088 | do not match. Otherwise, all exceptions are listed. */ | |
13089 | ||
ab816a27 | 13090 | static std::vector<ada_exc_info> |
2d7cc5c7 | 13091 | ada_exceptions_list_1 (compiled_regex *preg) |
778865d3 | 13092 | { |
ab816a27 | 13093 | std::vector<ada_exc_info> result; |
778865d3 JB |
13094 | int prev_len; |
13095 | ||
13096 | /* First, list the known standard exceptions. These exceptions | |
13097 | need to be handled separately, as they are usually defined in | |
13098 | runtime units that have been compiled without debugging info. */ | |
13099 | ||
13100 | ada_add_standard_exceptions (preg, &result); | |
13101 | ||
13102 | /* Next, find all exceptions whose scope is local and accessible | |
13103 | from the currently selected frame. */ | |
13104 | ||
13105 | if (has_stack_frames ()) | |
13106 | { | |
ab816a27 | 13107 | prev_len = result.size (); |
778865d3 JB |
13108 | ada_add_exceptions_from_frame (preg, get_selected_frame (NULL), |
13109 | &result); | |
ab816a27 | 13110 | if (result.size () > prev_len) |
778865d3 JB |
13111 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13112 | } | |
13113 | ||
13114 | /* Add all exceptions whose scope is global. */ | |
13115 | ||
ab816a27 | 13116 | prev_len = result.size (); |
778865d3 | 13117 | ada_add_global_exceptions (preg, &result); |
ab816a27 | 13118 | if (result.size () > prev_len) |
778865d3 JB |
13119 | sort_remove_dups_ada_exceptions_list (&result, prev_len); |
13120 | ||
778865d3 JB |
13121 | return result; |
13122 | } | |
13123 | ||
13124 | /* Return a vector of ada_exc_info. | |
13125 | ||
13126 | If REGEXP is NULL, all exceptions are included in the result. | |
13127 | Otherwise, it should contain a valid regular expression, | |
13128 | and only the exceptions whose names match that regular expression | |
13129 | are included in the result. | |
13130 | ||
13131 | The exceptions are sorted in the following order: | |
13132 | - Standard exceptions (defined by the Ada language), in | |
13133 | alphabetical order; | |
13134 | - Exceptions only visible from the current frame, in | |
13135 | alphabetical order; | |
13136 | - Exceptions whose scope is global, in alphabetical order. */ | |
13137 | ||
ab816a27 | 13138 | std::vector<ada_exc_info> |
778865d3 JB |
13139 | ada_exceptions_list (const char *regexp) |
13140 | { | |
2d7cc5c7 PA |
13141 | if (regexp == NULL) |
13142 | return ada_exceptions_list_1 (NULL); | |
778865d3 | 13143 | |
2d7cc5c7 PA |
13144 | compiled_regex reg (regexp, REG_NOSUB, _("invalid regular expression")); |
13145 | return ada_exceptions_list_1 (®); | |
778865d3 JB |
13146 | } |
13147 | ||
13148 | /* Implement the "info exceptions" command. */ | |
13149 | ||
13150 | static void | |
1d12d88f | 13151 | info_exceptions_command (const char *regexp, int from_tty) |
778865d3 | 13152 | { |
778865d3 | 13153 | struct gdbarch *gdbarch = get_current_arch (); |
778865d3 | 13154 | |
ab816a27 | 13155 | std::vector<ada_exc_info> exceptions = ada_exceptions_list (regexp); |
778865d3 JB |
13156 | |
13157 | if (regexp != NULL) | |
13158 | printf_filtered | |
13159 | (_("All Ada exceptions matching regular expression \"%s\":\n"), regexp); | |
13160 | else | |
13161 | printf_filtered (_("All defined Ada exceptions:\n")); | |
13162 | ||
ab816a27 TT |
13163 | for (const ada_exc_info &info : exceptions) |
13164 | printf_filtered ("%s: %s\n", info.name, paddress (gdbarch, info.addr)); | |
778865d3 JB |
13165 | } |
13166 | ||
6c038f32 PH |
13167 | \f |
13168 | /* Language vector */ | |
13169 | ||
b5ec771e PA |
13170 | /* symbol_name_matcher_ftype adapter for wild_match. */ |
13171 | ||
13172 | static bool | |
13173 | do_wild_match (const char *symbol_search_name, | |
13174 | const lookup_name_info &lookup_name, | |
a207cff2 | 13175 | completion_match_result *comp_match_res) |
b5ec771e PA |
13176 | { |
13177 | return wild_match (symbol_search_name, ada_lookup_name (lookup_name)); | |
13178 | } | |
13179 | ||
13180 | /* symbol_name_matcher_ftype adapter for full_match. */ | |
13181 | ||
13182 | static bool | |
13183 | do_full_match (const char *symbol_search_name, | |
13184 | const lookup_name_info &lookup_name, | |
a207cff2 | 13185 | completion_match_result *comp_match_res) |
b5ec771e | 13186 | { |
959d6a67 TT |
13187 | const char *lname = lookup_name.ada ().lookup_name ().c_str (); |
13188 | ||
13189 | /* If both symbols start with "_ada_", just let the loop below | |
13190 | handle the comparison. However, if only the symbol name starts | |
13191 | with "_ada_", skip the prefix and let the match proceed as | |
13192 | usual. */ | |
13193 | if (startswith (symbol_search_name, "_ada_") | |
13194 | && !startswith (lname, "_ada")) | |
86b44259 TT |
13195 | symbol_search_name += 5; |
13196 | ||
86b44259 TT |
13197 | int uscore_count = 0; |
13198 | while (*lname != '\0') | |
13199 | { | |
13200 | if (*symbol_search_name != *lname) | |
13201 | { | |
13202 | if (*symbol_search_name == 'B' && uscore_count == 2 | |
13203 | && symbol_search_name[1] == '_') | |
13204 | { | |
13205 | symbol_search_name += 2; | |
13206 | while (isdigit (*symbol_search_name)) | |
13207 | ++symbol_search_name; | |
13208 | if (symbol_search_name[0] == '_' | |
13209 | && symbol_search_name[1] == '_') | |
13210 | { | |
13211 | symbol_search_name += 2; | |
13212 | continue; | |
13213 | } | |
13214 | } | |
13215 | return false; | |
13216 | } | |
13217 | ||
13218 | if (*symbol_search_name == '_') | |
13219 | ++uscore_count; | |
13220 | else | |
13221 | uscore_count = 0; | |
13222 | ||
13223 | ++symbol_search_name; | |
13224 | ++lname; | |
13225 | } | |
13226 | ||
13227 | return is_name_suffix (symbol_search_name); | |
b5ec771e PA |
13228 | } |
13229 | ||
a2cd4f14 JB |
13230 | /* symbol_name_matcher_ftype for exact (verbatim) matches. */ |
13231 | ||
13232 | static bool | |
13233 | do_exact_match (const char *symbol_search_name, | |
13234 | const lookup_name_info &lookup_name, | |
13235 | completion_match_result *comp_match_res) | |
13236 | { | |
13237 | return strcmp (symbol_search_name, ada_lookup_name (lookup_name)) == 0; | |
13238 | } | |
13239 | ||
b5ec771e PA |
13240 | /* Build the Ada lookup name for LOOKUP_NAME. */ |
13241 | ||
13242 | ada_lookup_name_info::ada_lookup_name_info (const lookup_name_info &lookup_name) | |
13243 | { | |
e0802d59 | 13244 | gdb::string_view user_name = lookup_name.name (); |
b5ec771e | 13245 | |
6a780b67 | 13246 | if (!user_name.empty () && user_name[0] == '<') |
b5ec771e PA |
13247 | { |
13248 | if (user_name.back () == '>') | |
e0802d59 | 13249 | m_encoded_name |
5ac58899 | 13250 | = gdb::to_string (user_name.substr (1, user_name.size () - 2)); |
b5ec771e | 13251 | else |
e0802d59 | 13252 | m_encoded_name |
5ac58899 | 13253 | = gdb::to_string (user_name.substr (1, user_name.size () - 1)); |
b5ec771e PA |
13254 | m_encoded_p = true; |
13255 | m_verbatim_p = true; | |
13256 | m_wild_match_p = false; | |
13257 | m_standard_p = false; | |
13258 | } | |
13259 | else | |
13260 | { | |
13261 | m_verbatim_p = false; | |
13262 | ||
e0802d59 | 13263 | m_encoded_p = user_name.find ("__") != gdb::string_view::npos; |
b5ec771e PA |
13264 | |
13265 | if (!m_encoded_p) | |
13266 | { | |
e0802d59 | 13267 | const char *folded = ada_fold_name (user_name); |
5c4258f4 TT |
13268 | m_encoded_name = ada_encode_1 (folded, false); |
13269 | if (m_encoded_name.empty ()) | |
5ac58899 | 13270 | m_encoded_name = gdb::to_string (user_name); |
b5ec771e PA |
13271 | } |
13272 | else | |
5ac58899 | 13273 | m_encoded_name = gdb::to_string (user_name); |
b5ec771e PA |
13274 | |
13275 | /* Handle the 'package Standard' special case. See description | |
13276 | of m_standard_p. */ | |
13277 | if (startswith (m_encoded_name.c_str (), "standard__")) | |
13278 | { | |
13279 | m_encoded_name = m_encoded_name.substr (sizeof ("standard__") - 1); | |
13280 | m_standard_p = true; | |
13281 | } | |
13282 | else | |
13283 | m_standard_p = false; | |
74ccd7f5 | 13284 | |
b5ec771e PA |
13285 | /* If the name contains a ".", then the user is entering a fully |
13286 | qualified entity name, and the match must not be done in wild | |
13287 | mode. Similarly, if the user wants to complete what looks | |
13288 | like an encoded name, the match must not be done in wild | |
13289 | mode. Also, in the standard__ special case always do | |
13290 | non-wild matching. */ | |
13291 | m_wild_match_p | |
13292 | = (lookup_name.match_type () != symbol_name_match_type::FULL | |
13293 | && !m_encoded_p | |
13294 | && !m_standard_p | |
13295 | && user_name.find ('.') == std::string::npos); | |
13296 | } | |
13297 | } | |
13298 | ||
13299 | /* symbol_name_matcher_ftype method for Ada. This only handles | |
13300 | completion mode. */ | |
13301 | ||
13302 | static bool | |
13303 | ada_symbol_name_matches (const char *symbol_search_name, | |
13304 | const lookup_name_info &lookup_name, | |
a207cff2 | 13305 | completion_match_result *comp_match_res) |
74ccd7f5 | 13306 | { |
b5ec771e PA |
13307 | return lookup_name.ada ().matches (symbol_search_name, |
13308 | lookup_name.match_type (), | |
a207cff2 | 13309 | comp_match_res); |
b5ec771e PA |
13310 | } |
13311 | ||
de63c46b PA |
13312 | /* A name matcher that matches the symbol name exactly, with |
13313 | strcmp. */ | |
13314 | ||
13315 | static bool | |
13316 | literal_symbol_name_matcher (const char *symbol_search_name, | |
13317 | const lookup_name_info &lookup_name, | |
13318 | completion_match_result *comp_match_res) | |
13319 | { | |
e0802d59 | 13320 | gdb::string_view name_view = lookup_name.name (); |
de63c46b | 13321 | |
e0802d59 TT |
13322 | if (lookup_name.completion_mode () |
13323 | ? (strncmp (symbol_search_name, name_view.data (), | |
13324 | name_view.size ()) == 0) | |
13325 | : symbol_search_name == name_view) | |
de63c46b PA |
13326 | { |
13327 | if (comp_match_res != NULL) | |
13328 | comp_match_res->set_match (symbol_search_name); | |
13329 | return true; | |
13330 | } | |
13331 | else | |
13332 | return false; | |
13333 | } | |
13334 | ||
c9debfb9 | 13335 | /* Implement the "get_symbol_name_matcher" language_defn method for |
b5ec771e PA |
13336 | Ada. */ |
13337 | ||
13338 | static symbol_name_matcher_ftype * | |
13339 | ada_get_symbol_name_matcher (const lookup_name_info &lookup_name) | |
13340 | { | |
de63c46b PA |
13341 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
13342 | return literal_symbol_name_matcher; | |
13343 | ||
b5ec771e PA |
13344 | if (lookup_name.completion_mode ()) |
13345 | return ada_symbol_name_matches; | |
74ccd7f5 | 13346 | else |
b5ec771e PA |
13347 | { |
13348 | if (lookup_name.ada ().wild_match_p ()) | |
13349 | return do_wild_match; | |
a2cd4f14 JB |
13350 | else if (lookup_name.ada ().verbatim_p ()) |
13351 | return do_exact_match; | |
b5ec771e PA |
13352 | else |
13353 | return do_full_match; | |
13354 | } | |
74ccd7f5 JB |
13355 | } |
13356 | ||
0874fd07 AB |
13357 | /* Class representing the Ada language. */ |
13358 | ||
13359 | class ada_language : public language_defn | |
13360 | { | |
13361 | public: | |
13362 | ada_language () | |
0e25e767 | 13363 | : language_defn (language_ada) |
0874fd07 | 13364 | { /* Nothing. */ } |
5bd40f2a | 13365 | |
6f7664a9 AB |
13366 | /* See language.h. */ |
13367 | ||
13368 | const char *name () const override | |
13369 | { return "ada"; } | |
13370 | ||
13371 | /* See language.h. */ | |
13372 | ||
13373 | const char *natural_name () const override | |
13374 | { return "Ada"; } | |
13375 | ||
e171d6f1 AB |
13376 | /* See language.h. */ |
13377 | ||
13378 | const std::vector<const char *> &filename_extensions () const override | |
13379 | { | |
13380 | static const std::vector<const char *> extensions | |
13381 | = { ".adb", ".ads", ".a", ".ada", ".dg" }; | |
13382 | return extensions; | |
13383 | } | |
13384 | ||
5bd40f2a AB |
13385 | /* Print an array element index using the Ada syntax. */ |
13386 | ||
13387 | void print_array_index (struct type *index_type, | |
13388 | LONGEST index, | |
13389 | struct ui_file *stream, | |
13390 | const value_print_options *options) const override | |
13391 | { | |
13392 | struct value *index_value = val_atr (index_type, index); | |
13393 | ||
00c696a6 | 13394 | value_print (index_value, stream, options); |
5bd40f2a AB |
13395 | fprintf_filtered (stream, " => "); |
13396 | } | |
15e5fd35 AB |
13397 | |
13398 | /* Implement the "read_var_value" language_defn method for Ada. */ | |
13399 | ||
13400 | struct value *read_var_value (struct symbol *var, | |
13401 | const struct block *var_block, | |
13402 | struct frame_info *frame) const override | |
13403 | { | |
13404 | /* The only case where default_read_var_value is not sufficient | |
13405 | is when VAR is a renaming... */ | |
13406 | if (frame != nullptr) | |
13407 | { | |
13408 | const struct block *frame_block = get_frame_block (frame, NULL); | |
13409 | if (frame_block != nullptr && ada_is_renaming_symbol (var)) | |
13410 | return ada_read_renaming_var_value (var, frame_block); | |
13411 | } | |
13412 | ||
13413 | /* This is a typical case where we expect the default_read_var_value | |
13414 | function to work. */ | |
13415 | return language_defn::read_var_value (var, var_block, frame); | |
13416 | } | |
1fb314aa | 13417 | |
2c71f639 TV |
13418 | /* See language.h. */ |
13419 | virtual bool symbol_printing_suppressed (struct symbol *symbol) const override | |
13420 | { | |
13421 | return symbol->artificial; | |
13422 | } | |
13423 | ||
1fb314aa AB |
13424 | /* See language.h. */ |
13425 | void language_arch_info (struct gdbarch *gdbarch, | |
13426 | struct language_arch_info *lai) const override | |
13427 | { | |
13428 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
13429 | ||
7bea47f0 AB |
13430 | /* Helper function to allow shorter lines below. */ |
13431 | auto add = [&] (struct type *t) | |
13432 | { | |
13433 | lai->add_primitive_type (t); | |
13434 | }; | |
13435 | ||
13436 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
13437 | 0, "integer")); | |
13438 | add (arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
13439 | 0, "long_integer")); | |
13440 | add (arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
13441 | 0, "short_integer")); | |
13442 | struct type *char_type = arch_character_type (gdbarch, TARGET_CHAR_BIT, | |
c9f66f00 | 13443 | 1, "character"); |
7bea47f0 AB |
13444 | lai->set_string_char_type (char_type); |
13445 | add (char_type); | |
c9f66f00 TT |
13446 | add (arch_character_type (gdbarch, 16, 1, "wide_character")); |
13447 | add (arch_character_type (gdbarch, 32, 1, "wide_wide_character")); | |
7bea47f0 AB |
13448 | add (arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
13449 | "float", gdbarch_float_format (gdbarch))); | |
13450 | add (arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
13451 | "long_float", gdbarch_double_format (gdbarch))); | |
13452 | add (arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
13453 | 0, "long_long_integer")); | |
13454 | add (arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), | |
13455 | "long_long_float", | |
13456 | gdbarch_long_double_format (gdbarch))); | |
13457 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
13458 | 0, "natural")); | |
13459 | add (arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
13460 | 0, "positive")); | |
13461 | add (builtin->builtin_void); | |
13462 | ||
13463 | struct type *system_addr_ptr | |
1fb314aa AB |
13464 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, |
13465 | "void")); | |
7bea47f0 AB |
13466 | system_addr_ptr->set_name ("system__address"); |
13467 | add (system_addr_ptr); | |
1fb314aa AB |
13468 | |
13469 | /* Create the equivalent of the System.Storage_Elements.Storage_Offset | |
13470 | type. This is a signed integral type whose size is the same as | |
13471 | the size of addresses. */ | |
7bea47f0 AB |
13472 | unsigned int addr_length = TYPE_LENGTH (system_addr_ptr); |
13473 | add (arch_integer_type (gdbarch, addr_length * HOST_CHAR_BIT, 0, | |
13474 | "storage_offset")); | |
1fb314aa | 13475 | |
7bea47f0 | 13476 | lai->set_bool_type (builtin->builtin_bool); |
1fb314aa | 13477 | } |
4009ee92 AB |
13478 | |
13479 | /* See language.h. */ | |
13480 | ||
13481 | bool iterate_over_symbols | |
13482 | (const struct block *block, const lookup_name_info &name, | |
13483 | domain_enum domain, | |
13484 | gdb::function_view<symbol_found_callback_ftype> callback) const override | |
13485 | { | |
d1183b06 TT |
13486 | std::vector<struct block_symbol> results |
13487 | = ada_lookup_symbol_list_worker (name, block, domain, 0); | |
4009ee92 AB |
13488 | for (block_symbol &sym : results) |
13489 | { | |
13490 | if (!callback (&sym)) | |
13491 | return false; | |
13492 | } | |
13493 | ||
13494 | return true; | |
13495 | } | |
6f827019 AB |
13496 | |
13497 | /* See language.h. */ | |
3456e70c TT |
13498 | bool sniff_from_mangled_name |
13499 | (const char *mangled, | |
13500 | gdb::unique_xmalloc_ptr<char> *out) const override | |
6f827019 AB |
13501 | { |
13502 | std::string demangled = ada_decode (mangled); | |
13503 | ||
13504 | *out = NULL; | |
13505 | ||
13506 | if (demangled != mangled && demangled[0] != '<') | |
13507 | { | |
13508 | /* Set the gsymbol language to Ada, but still return 0. | |
13509 | Two reasons for that: | |
13510 | ||
13511 | 1. For Ada, we prefer computing the symbol's decoded name | |
13512 | on the fly rather than pre-compute it, in order to save | |
13513 | memory (Ada projects are typically very large). | |
13514 | ||
13515 | 2. There are some areas in the definition of the GNAT | |
13516 | encoding where, with a bit of bad luck, we might be able | |
13517 | to decode a non-Ada symbol, generating an incorrect | |
13518 | demangled name (Eg: names ending with "TB" for instance | |
13519 | are identified as task bodies and so stripped from | |
13520 | the decoded name returned). | |
13521 | ||
13522 | Returning true, here, but not setting *DEMANGLED, helps us get | |
13523 | a little bit of the best of both worlds. Because we're last, | |
13524 | we should not affect any of the other languages that were | |
13525 | able to demangle the symbol before us; we get to correctly | |
13526 | tag Ada symbols as such; and even if we incorrectly tagged a | |
13527 | non-Ada symbol, which should be rare, any routing through the | |
13528 | Ada language should be transparent (Ada tries to behave much | |
13529 | like C/C++ with non-Ada symbols). */ | |
13530 | return true; | |
13531 | } | |
13532 | ||
13533 | return false; | |
13534 | } | |
fbfb0a46 AB |
13535 | |
13536 | /* See language.h. */ | |
13537 | ||
3456e70c TT |
13538 | gdb::unique_xmalloc_ptr<char> demangle_symbol (const char *mangled, |
13539 | int options) const override | |
0a50df5d | 13540 | { |
3456e70c | 13541 | return make_unique_xstrdup (ada_decode (mangled).c_str ()); |
0a50df5d AB |
13542 | } |
13543 | ||
13544 | /* See language.h. */ | |
13545 | ||
fbfb0a46 AB |
13546 | void print_type (struct type *type, const char *varstring, |
13547 | struct ui_file *stream, int show, int level, | |
13548 | const struct type_print_options *flags) const override | |
13549 | { | |
13550 | ada_print_type (type, varstring, stream, show, level, flags); | |
13551 | } | |
c9debfb9 | 13552 | |
53fc67f8 AB |
13553 | /* See language.h. */ |
13554 | ||
13555 | const char *word_break_characters (void) const override | |
13556 | { | |
13557 | return ada_completer_word_break_characters; | |
13558 | } | |
13559 | ||
7e56227d AB |
13560 | /* See language.h. */ |
13561 | ||
13562 | void collect_symbol_completion_matches (completion_tracker &tracker, | |
13563 | complete_symbol_mode mode, | |
13564 | symbol_name_match_type name_match_type, | |
13565 | const char *text, const char *word, | |
13566 | enum type_code code) const override | |
13567 | { | |
13568 | struct symbol *sym; | |
13569 | const struct block *b, *surrounding_static_block = 0; | |
13570 | struct block_iterator iter; | |
13571 | ||
13572 | gdb_assert (code == TYPE_CODE_UNDEF); | |
13573 | ||
13574 | lookup_name_info lookup_name (text, name_match_type, true); | |
13575 | ||
13576 | /* First, look at the partial symtab symbols. */ | |
13577 | expand_symtabs_matching (NULL, | |
13578 | lookup_name, | |
13579 | NULL, | |
13580 | NULL, | |
03a8ea51 | 13581 | SEARCH_GLOBAL_BLOCK | SEARCH_STATIC_BLOCK, |
7e56227d AB |
13582 | ALL_DOMAIN); |
13583 | ||
13584 | /* At this point scan through the misc symbol vectors and add each | |
13585 | symbol you find to the list. Eventually we want to ignore | |
13586 | anything that isn't a text symbol (everything else will be | |
13587 | handled by the psymtab code above). */ | |
13588 | ||
13589 | for (objfile *objfile : current_program_space->objfiles ()) | |
13590 | { | |
13591 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
13592 | { | |
13593 | QUIT; | |
13594 | ||
13595 | if (completion_skip_symbol (mode, msymbol)) | |
13596 | continue; | |
13597 | ||
13598 | language symbol_language = msymbol->language (); | |
13599 | ||
13600 | /* Ada minimal symbols won't have their language set to Ada. If | |
13601 | we let completion_list_add_name compare using the | |
13602 | default/C-like matcher, then when completing e.g., symbols in a | |
13603 | package named "pck", we'd match internal Ada symbols like | |
13604 | "pckS", which are invalid in an Ada expression, unless you wrap | |
13605 | them in '<' '>' to request a verbatim match. | |
13606 | ||
13607 | Unfortunately, some Ada encoded names successfully demangle as | |
13608 | C++ symbols (using an old mangling scheme), such as "name__2Xn" | |
13609 | -> "Xn::name(void)" and thus some Ada minimal symbols end up | |
13610 | with the wrong language set. Paper over that issue here. */ | |
13611 | if (symbol_language == language_auto | |
13612 | || symbol_language == language_cplus) | |
13613 | symbol_language = language_ada; | |
13614 | ||
13615 | completion_list_add_name (tracker, | |
13616 | symbol_language, | |
13617 | msymbol->linkage_name (), | |
13618 | lookup_name, text, word); | |
13619 | } | |
13620 | } | |
13621 | ||
13622 | /* Search upwards from currently selected frame (so that we can | |
13623 | complete on local vars. */ | |
13624 | ||
13625 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
13626 | { | |
13627 | if (!BLOCK_SUPERBLOCK (b)) | |
13628 | surrounding_static_block = b; /* For elmin of dups */ | |
13629 | ||
13630 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13631 | { | |
13632 | if (completion_skip_symbol (mode, sym)) | |
13633 | continue; | |
13634 | ||
13635 | completion_list_add_name (tracker, | |
13636 | sym->language (), | |
13637 | sym->linkage_name (), | |
13638 | lookup_name, text, word); | |
13639 | } | |
13640 | } | |
13641 | ||
13642 | /* Go through the symtabs and check the externs and statics for | |
13643 | symbols which match. */ | |
13644 | ||
13645 | for (objfile *objfile : current_program_space->objfiles ()) | |
13646 | { | |
13647 | for (compunit_symtab *s : objfile->compunits ()) | |
13648 | { | |
13649 | QUIT; | |
af39c5c8 | 13650 | b = BLOCKVECTOR_BLOCK (s->blockvector (), GLOBAL_BLOCK); |
7e56227d AB |
13651 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
13652 | { | |
13653 | if (completion_skip_symbol (mode, sym)) | |
13654 | continue; | |
13655 | ||
13656 | completion_list_add_name (tracker, | |
13657 | sym->language (), | |
13658 | sym->linkage_name (), | |
13659 | lookup_name, text, word); | |
13660 | } | |
13661 | } | |
13662 | } | |
13663 | ||
13664 | for (objfile *objfile : current_program_space->objfiles ()) | |
13665 | { | |
13666 | for (compunit_symtab *s : objfile->compunits ()) | |
13667 | { | |
13668 | QUIT; | |
af39c5c8 | 13669 | b = BLOCKVECTOR_BLOCK (s->blockvector (), STATIC_BLOCK); |
7e56227d AB |
13670 | /* Don't do this block twice. */ |
13671 | if (b == surrounding_static_block) | |
13672 | continue; | |
13673 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
13674 | { | |
13675 | if (completion_skip_symbol (mode, sym)) | |
13676 | continue; | |
13677 | ||
13678 | completion_list_add_name (tracker, | |
13679 | sym->language (), | |
13680 | sym->linkage_name (), | |
13681 | lookup_name, text, word); | |
13682 | } | |
13683 | } | |
13684 | } | |
13685 | } | |
13686 | ||
f16a9f57 AB |
13687 | /* See language.h. */ |
13688 | ||
13689 | gdb::unique_xmalloc_ptr<char> watch_location_expression | |
13690 | (struct type *type, CORE_ADDR addr) const override | |
13691 | { | |
13692 | type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); | |
13693 | std::string name = type_to_string (type); | |
8579fd13 | 13694 | return xstrprintf ("{%s} %s", name.c_str (), core_addr_to_string (addr)); |
f16a9f57 AB |
13695 | } |
13696 | ||
a1d1fa3e AB |
13697 | /* See language.h. */ |
13698 | ||
13699 | void value_print (struct value *val, struct ui_file *stream, | |
13700 | const struct value_print_options *options) const override | |
13701 | { | |
13702 | return ada_value_print (val, stream, options); | |
13703 | } | |
13704 | ||
ebe2334e AB |
13705 | /* See language.h. */ |
13706 | ||
13707 | void value_print_inner | |
13708 | (struct value *val, struct ui_file *stream, int recurse, | |
13709 | const struct value_print_options *options) const override | |
13710 | { | |
13711 | return ada_value_print_inner (val, stream, recurse, options); | |
13712 | } | |
13713 | ||
a78a19b1 AB |
13714 | /* See language.h. */ |
13715 | ||
13716 | struct block_symbol lookup_symbol_nonlocal | |
13717 | (const char *name, const struct block *block, | |
13718 | const domain_enum domain) const override | |
13719 | { | |
13720 | struct block_symbol sym; | |
13721 | ||
13722 | sym = ada_lookup_symbol (name, block_static_block (block), domain); | |
13723 | if (sym.symbol != NULL) | |
13724 | return sym; | |
13725 | ||
13726 | /* If we haven't found a match at this point, try the primitive | |
13727 | types. In other languages, this search is performed before | |
13728 | searching for global symbols in order to short-circuit that | |
13729 | global-symbol search if it happens that the name corresponds | |
13730 | to a primitive type. But we cannot do the same in Ada, because | |
13731 | it is perfectly legitimate for a program to declare a type which | |
13732 | has the same name as a standard type. If looking up a type in | |
13733 | that situation, we have traditionally ignored the primitive type | |
13734 | in favor of user-defined types. This is why, unlike most other | |
13735 | languages, we search the primitive types this late and only after | |
13736 | having searched the global symbols without success. */ | |
13737 | ||
13738 | if (domain == VAR_DOMAIN) | |
13739 | { | |
13740 | struct gdbarch *gdbarch; | |
13741 | ||
13742 | if (block == NULL) | |
13743 | gdbarch = target_gdbarch (); | |
13744 | else | |
13745 | gdbarch = block_gdbarch (block); | |
13746 | sym.symbol | |
13747 | = language_lookup_primitive_type_as_symbol (this, gdbarch, name); | |
13748 | if (sym.symbol != NULL) | |
13749 | return sym; | |
13750 | } | |
13751 | ||
13752 | return {}; | |
13753 | } | |
13754 | ||
87afa652 AB |
13755 | /* See language.h. */ |
13756 | ||
13757 | int parser (struct parser_state *ps) const override | |
13758 | { | |
13759 | warnings_issued = 0; | |
13760 | return ada_parse (ps); | |
13761 | } | |
13762 | ||
ec8cec5b AB |
13763 | /* See language.h. */ |
13764 | ||
13765 | void emitchar (int ch, struct type *chtype, | |
13766 | struct ui_file *stream, int quoter) const override | |
13767 | { | |
13768 | ada_emit_char (ch, chtype, stream, quoter, 1); | |
13769 | } | |
13770 | ||
52b50f2c AB |
13771 | /* See language.h. */ |
13772 | ||
13773 | void printchar (int ch, struct type *chtype, | |
13774 | struct ui_file *stream) const override | |
13775 | { | |
13776 | ada_printchar (ch, chtype, stream); | |
13777 | } | |
13778 | ||
d711ee67 AB |
13779 | /* See language.h. */ |
13780 | ||
13781 | void printstr (struct ui_file *stream, struct type *elttype, | |
13782 | const gdb_byte *string, unsigned int length, | |
13783 | const char *encoding, int force_ellipses, | |
13784 | const struct value_print_options *options) const override | |
13785 | { | |
13786 | ada_printstr (stream, elttype, string, length, encoding, | |
13787 | force_ellipses, options); | |
13788 | } | |
13789 | ||
4ffc13fb AB |
13790 | /* See language.h. */ |
13791 | ||
13792 | void print_typedef (struct type *type, struct symbol *new_symbol, | |
13793 | struct ui_file *stream) const override | |
13794 | { | |
13795 | ada_print_typedef (type, new_symbol, stream); | |
13796 | } | |
13797 | ||
39e7ecca AB |
13798 | /* See language.h. */ |
13799 | ||
13800 | bool is_string_type_p (struct type *type) const override | |
13801 | { | |
13802 | return ada_is_string_type (type); | |
13803 | } | |
13804 | ||
22e3f3ed AB |
13805 | /* See language.h. */ |
13806 | ||
13807 | const char *struct_too_deep_ellipsis () const override | |
13808 | { return "(...)"; } | |
39e7ecca | 13809 | |
67bd3fd5 AB |
13810 | /* See language.h. */ |
13811 | ||
13812 | bool c_style_arrays_p () const override | |
13813 | { return false; } | |
13814 | ||
d3355e4d AB |
13815 | /* See language.h. */ |
13816 | ||
13817 | bool store_sym_names_in_linkage_form_p () const override | |
13818 | { return true; } | |
13819 | ||
b63a3f3f AB |
13820 | /* See language.h. */ |
13821 | ||
13822 | const struct lang_varobj_ops *varobj_ops () const override | |
13823 | { return &ada_varobj_ops; } | |
13824 | ||
c9debfb9 AB |
13825 | protected: |
13826 | /* See language.h. */ | |
13827 | ||
13828 | symbol_name_matcher_ftype *get_symbol_name_matcher_inner | |
13829 | (const lookup_name_info &lookup_name) const override | |
13830 | { | |
13831 | return ada_get_symbol_name_matcher (lookup_name); | |
13832 | } | |
0874fd07 AB |
13833 | }; |
13834 | ||
13835 | /* Single instance of the Ada language class. */ | |
13836 | ||
13837 | static ada_language ada_language_defn; | |
13838 | ||
5bf03f13 JB |
13839 | /* Command-list for the "set/show ada" prefix command. */ |
13840 | static struct cmd_list_element *set_ada_list; | |
13841 | static struct cmd_list_element *show_ada_list; | |
13842 | ||
2060206e PA |
13843 | static void |
13844 | initialize_ada_catchpoint_ops (void) | |
13845 | { | |
13846 | struct breakpoint_ops *ops; | |
13847 | ||
13848 | initialize_breakpoint_ops (); | |
13849 | ||
13850 | ops = &catch_exception_breakpoint_ops; | |
13851 | *ops = bkpt_breakpoint_ops; | |
37f6a7f4 TT |
13852 | ops->allocate_location = allocate_location_exception; |
13853 | ops->re_set = re_set_exception; | |
13854 | ops->check_status = check_status_exception; | |
13855 | ops->print_it = print_it_exception; | |
13856 | ops->print_one = print_one_exception; | |
13857 | ops->print_mention = print_mention_exception; | |
13858 | ops->print_recreate = print_recreate_exception; | |
2060206e PA |
13859 | } |
13860 | ||
3d9434b5 JB |
13861 | /* This module's 'new_objfile' observer. */ |
13862 | ||
13863 | static void | |
13864 | ada_new_objfile_observer (struct objfile *objfile) | |
13865 | { | |
13866 | ada_clear_symbol_cache (); | |
13867 | } | |
13868 | ||
13869 | /* This module's 'free_objfile' observer. */ | |
13870 | ||
13871 | static void | |
13872 | ada_free_objfile_observer (struct objfile *objfile) | |
13873 | { | |
13874 | ada_clear_symbol_cache (); | |
13875 | } | |
13876 | ||
315e4ebb TT |
13877 | /* Charsets known to GNAT. */ |
13878 | static const char * const gnat_source_charsets[] = | |
13879 | { | |
13880 | /* Note that code below assumes that the default comes first. | |
13881 | Latin-1 is the default here, because that is also GNAT's | |
13882 | default. */ | |
13883 | "ISO-8859-1", | |
13884 | "ISO-8859-2", | |
13885 | "ISO-8859-3", | |
13886 | "ISO-8859-4", | |
13887 | "ISO-8859-5", | |
13888 | "ISO-8859-15", | |
13889 | "CP437", | |
13890 | "CP850", | |
13891 | /* Note that this value is special-cased in the encoder and | |
13892 | decoder. */ | |
13893 | ada_utf8, | |
13894 | nullptr | |
13895 | }; | |
13896 | ||
6c265988 | 13897 | void _initialize_ada_language (); |
d2e4a39e | 13898 | void |
6c265988 | 13899 | _initialize_ada_language () |
14f9c5c9 | 13900 | { |
2060206e PA |
13901 | initialize_ada_catchpoint_ops (); |
13902 | ||
f54bdb6d SM |
13903 | add_setshow_prefix_cmd |
13904 | ("ada", no_class, | |
13905 | _("Prefix command for changing Ada-specific settings."), | |
13906 | _("Generic command for showing Ada-specific settings."), | |
13907 | &set_ada_list, &show_ada_list, | |
13908 | &setlist, &showlist); | |
5bf03f13 JB |
13909 | |
13910 | add_setshow_boolean_cmd ("trust-PAD-over-XVS", class_obscure, | |
dda83cd7 | 13911 | &trust_pad_over_xvs, _("\ |
590042fc PW |
13912 | Enable or disable an optimization trusting PAD types over XVS types."), _("\ |
13913 | Show whether an optimization trusting PAD types over XVS types is activated."), | |
dda83cd7 | 13914 | _("\ |
5bf03f13 JB |
13915 | This is related to the encoding used by the GNAT compiler. The debugger\n\ |
13916 | should normally trust the contents of PAD types, but certain older versions\n\ | |
13917 | of GNAT have a bug that sometimes causes the information in the PAD type\n\ | |
13918 | to be incorrect. Turning this setting \"off\" allows the debugger to\n\ | |
13919 | work around this bug. It is always safe to turn this option \"off\", but\n\ | |
13920 | this incurs a slight performance penalty, so it is recommended to NOT change\n\ | |
13921 | this option to \"off\" unless necessary."), | |
dda83cd7 | 13922 | NULL, NULL, &set_ada_list, &show_ada_list); |
5bf03f13 | 13923 | |
d72413e6 PMR |
13924 | add_setshow_boolean_cmd ("print-signatures", class_vars, |
13925 | &print_signatures, _("\ | |
13926 | Enable or disable the output of formal and return types for functions in the \ | |
590042fc | 13927 | overloads selection menu."), _("\ |
d72413e6 | 13928 | Show whether the output of formal and return types for functions in the \ |
590042fc | 13929 | overloads selection menu is activated."), |
d72413e6 PMR |
13930 | NULL, NULL, NULL, &set_ada_list, &show_ada_list); |
13931 | ||
315e4ebb TT |
13932 | ada_source_charset = gnat_source_charsets[0]; |
13933 | add_setshow_enum_cmd ("source-charset", class_files, | |
13934 | gnat_source_charsets, | |
13935 | &ada_source_charset, _("\ | |
13936 | Set the Ada source character set."), _("\ | |
13937 | Show the Ada source character set."), _("\ | |
13938 | The character set used for Ada source files.\n\ | |
13939 | This must correspond to the '-gnati' or '-gnatW' option passed to GNAT."), | |
13940 | nullptr, nullptr, | |
13941 | &set_ada_list, &show_ada_list); | |
13942 | ||
9ac4176b PA |
13943 | add_catch_command ("exception", _("\ |
13944 | Catch Ada exceptions, when raised.\n\ | |
9bf7038b | 13945 | Usage: catch exception [ARG] [if CONDITION]\n\ |
60a90376 JB |
13946 | Without any argument, stop when any Ada exception is raised.\n\ |
13947 | If ARG is \"unhandled\" (without the quotes), only stop when the exception\n\ | |
13948 | being raised does not have a handler (and will therefore lead to the task's\n\ | |
13949 | termination).\n\ | |
13950 | Otherwise, the catchpoint only stops when the name of the exception being\n\ | |
9bf7038b TT |
13951 | raised is the same as ARG.\n\ |
13952 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13953 | exception should cause a stop."), | |
9ac4176b | 13954 | catch_ada_exception_command, |
71bed2db | 13955 | catch_ada_completer, |
9ac4176b PA |
13956 | CATCH_PERMANENT, |
13957 | CATCH_TEMPORARY); | |
9f757bf7 XR |
13958 | |
13959 | add_catch_command ("handlers", _("\ | |
13960 | Catch Ada exceptions, when handled.\n\ | |
9bf7038b TT |
13961 | Usage: catch handlers [ARG] [if CONDITION]\n\ |
13962 | Without any argument, stop when any Ada exception is handled.\n\ | |
13963 | With an argument, catch only exceptions with the given name.\n\ | |
13964 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13965 | exception should cause a stop."), | |
9f757bf7 | 13966 | catch_ada_handlers_command, |
dda83cd7 | 13967 | catch_ada_completer, |
9f757bf7 XR |
13968 | CATCH_PERMANENT, |
13969 | CATCH_TEMPORARY); | |
9ac4176b PA |
13970 | add_catch_command ("assert", _("\ |
13971 | Catch failed Ada assertions, when raised.\n\ | |
9bf7038b TT |
13972 | Usage: catch assert [if CONDITION]\n\ |
13973 | CONDITION is a boolean expression that is evaluated to see whether the\n\ | |
13974 | exception should cause a stop."), | |
9ac4176b | 13975 | catch_assert_command, |
dda83cd7 | 13976 | NULL, |
9ac4176b PA |
13977 | CATCH_PERMANENT, |
13978 | CATCH_TEMPORARY); | |
13979 | ||
778865d3 JB |
13980 | add_info ("exceptions", info_exceptions_command, |
13981 | _("\ | |
13982 | List all Ada exception names.\n\ | |
9bf7038b | 13983 | Usage: info exceptions [REGEXP]\n\ |
778865d3 JB |
13984 | If a regular expression is passed as an argument, only those matching\n\ |
13985 | the regular expression are listed.")); | |
13986 | ||
f54bdb6d SM |
13987 | add_setshow_prefix_cmd ("ada", class_maintenance, |
13988 | _("Set Ada maintenance-related variables."), | |
13989 | _("Show Ada maintenance-related variables."), | |
13990 | &maint_set_ada_cmdlist, &maint_show_ada_cmdlist, | |
13991 | &maintenance_set_cmdlist, &maintenance_show_cmdlist); | |
c6044dd1 JB |
13992 | |
13993 | add_setshow_boolean_cmd | |
13994 | ("ignore-descriptive-types", class_maintenance, | |
13995 | &ada_ignore_descriptive_types_p, | |
13996 | _("Set whether descriptive types generated by GNAT should be ignored."), | |
13997 | _("Show whether descriptive types generated by GNAT should be ignored."), | |
13998 | _("\ | |
13999 | When enabled, the debugger will stop using the DW_AT_GNAT_descriptive_type\n\ | |
14000 | DWARF attribute."), | |
14001 | NULL, NULL, &maint_set_ada_cmdlist, &maint_show_ada_cmdlist); | |
14002 | ||
2698f5ea TT |
14003 | decoded_names_store = htab_create_alloc (256, htab_hash_string, |
14004 | htab_eq_string, | |
459a2e4c | 14005 | NULL, xcalloc, xfree); |
6b69afc4 | 14006 | |
3d9434b5 | 14007 | /* The ada-lang observers. */ |
c90e7d63 SM |
14008 | gdb::observers::new_objfile.attach (ada_new_objfile_observer, "ada-lang"); |
14009 | gdb::observers::free_objfile.attach (ada_free_objfile_observer, "ada-lang"); | |
14010 | gdb::observers::inferior_exit.attach (ada_inferior_exit, "ada-lang"); | |
14f9c5c9 | 14011 | } |