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197e01b6 | 1 | /* Ada language support routines for GDB, the GNU debugger. Copyright (C) |
10a2c479 | 2 | |
f7f9143b JB |
3 | 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007 |
4 | Free Software Foundation, Inc. | |
14f9c5c9 | 5 | |
a9762ec7 | 6 | This file is part of GDB. |
14f9c5c9 | 7 | |
a9762ec7 JB |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
14f9c5c9 | 12 | |
a9762ec7 JB |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
14f9c5c9 | 17 | |
a9762ec7 JB |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
14f9c5c9 | 20 | |
96d887e8 | 21 | |
4c4b4cd2 | 22 | #include "defs.h" |
14f9c5c9 | 23 | #include <stdio.h> |
0c30c098 | 24 | #include "gdb_string.h" |
14f9c5c9 AS |
25 | #include <ctype.h> |
26 | #include <stdarg.h> | |
27 | #include "demangle.h" | |
4c4b4cd2 PH |
28 | #include "gdb_regex.h" |
29 | #include "frame.h" | |
14f9c5c9 AS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "expression.h" | |
34 | #include "parser-defs.h" | |
35 | #include "language.h" | |
36 | #include "c-lang.h" | |
37 | #include "inferior.h" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
40 | #include "breakpoint.h" | |
41 | #include "gdbcore.h" | |
4c4b4cd2 PH |
42 | #include "hashtab.h" |
43 | #include "gdb_obstack.h" | |
14f9c5c9 | 44 | #include "ada-lang.h" |
4c4b4cd2 PH |
45 | #include "completer.h" |
46 | #include "gdb_stat.h" | |
47 | #ifdef UI_OUT | |
14f9c5c9 | 48 | #include "ui-out.h" |
4c4b4cd2 | 49 | #endif |
fe898f56 | 50 | #include "block.h" |
04714b91 | 51 | #include "infcall.h" |
de4f826b | 52 | #include "dictionary.h" |
60250e8b | 53 | #include "exceptions.h" |
f7f9143b JB |
54 | #include "annotate.h" |
55 | #include "valprint.h" | |
9bbc9174 | 56 | #include "source.h" |
0259addd | 57 | #include "observer.h" |
14f9c5c9 | 58 | |
4c4b4cd2 PH |
59 | #ifndef ADA_RETAIN_DOTS |
60 | #define ADA_RETAIN_DOTS 0 | |
61 | #endif | |
62 | ||
63 | /* Define whether or not the C operator '/' truncates towards zero for | |
64 | differently signed operands (truncation direction is undefined in C). | |
65 | Copied from valarith.c. */ | |
66 | ||
67 | #ifndef TRUNCATION_TOWARDS_ZERO | |
68 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
69 | #endif | |
70 | ||
4c4b4cd2 | 71 | |
4c4b4cd2 | 72 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 73 | |
14f9c5c9 AS |
74 | static void modify_general_field (char *, LONGEST, int, int); |
75 | ||
d2e4a39e | 76 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static struct type *desc_data_type (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static struct value *desc_data (struct value *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int desc_arity (struct type *); |
14f9c5c9 | 103 | |
d2e4a39e | 104 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 105 | |
d2e4a39e | 106 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 107 | |
4c4b4cd2 | 108 | static struct value *ensure_lval (struct value *, CORE_ADDR *); |
14f9c5c9 | 109 | |
d2e4a39e | 110 | static struct value *convert_actual (struct value *, struct type *, |
4c4b4cd2 | 111 | CORE_ADDR *); |
14f9c5c9 | 112 | |
d2e4a39e | 113 | static struct value *make_array_descriptor (struct type *, struct value *, |
4c4b4cd2 | 114 | CORE_ADDR *); |
14f9c5c9 | 115 | |
4c4b4cd2 | 116 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 117 | struct block *, const char *, |
4c4b4cd2 | 118 | domain_enum, struct objfile *, |
76a01679 | 119 | struct symtab *, int); |
14f9c5c9 | 120 | |
4c4b4cd2 | 121 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 122 | |
76a01679 JB |
123 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
124 | struct block *, struct symtab *); | |
14f9c5c9 | 125 | |
4c4b4cd2 PH |
126 | static int num_defns_collected (struct obstack *); |
127 | ||
128 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 129 | |
d2e4a39e | 130 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
131 | *, const char *, int, |
132 | domain_enum, int); | |
14f9c5c9 | 133 | |
d2e4a39e | 134 | static struct symtab *symtab_for_sym (struct symbol *); |
14f9c5c9 | 135 | |
4c4b4cd2 | 136 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 137 | struct type *); |
14f9c5c9 | 138 | |
d2e4a39e | 139 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 140 | struct symbol *, struct block *); |
14f9c5c9 | 141 | |
d2e4a39e | 142 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 143 | |
4c4b4cd2 PH |
144 | static char *ada_op_name (enum exp_opcode); |
145 | ||
146 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 147 | |
d2e4a39e | 148 | static int numeric_type_p (struct type *); |
14f9c5c9 | 149 | |
d2e4a39e | 150 | static int integer_type_p (struct type *); |
14f9c5c9 | 151 | |
d2e4a39e | 152 | static int scalar_type_p (struct type *); |
14f9c5c9 | 153 | |
d2e4a39e | 154 | static int discrete_type_p (struct type *); |
14f9c5c9 | 155 | |
aeb5907d JB |
156 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
157 | const char **, | |
158 | int *, | |
159 | const char **); | |
160 | ||
161 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
162 | struct block *); | |
163 | ||
4c4b4cd2 | 164 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 165 | int, int, int *); |
4c4b4cd2 | 166 | |
d2e4a39e | 167 | static struct value *evaluate_subexp (struct type *, struct expression *, |
4c4b4cd2 | 168 | int *, enum noside); |
14f9c5c9 | 169 | |
d2e4a39e | 170 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 171 | |
d2e4a39e | 172 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 173 | |
10a2c479 | 174 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 175 | const gdb_byte *, |
4c4b4cd2 PH |
176 | CORE_ADDR, struct value *); |
177 | ||
178 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 179 | |
d2e4a39e | 180 | static struct type *to_fixed_range_type (char *, struct value *, |
4c4b4cd2 | 181 | struct objfile *); |
14f9c5c9 | 182 | |
d2e4a39e | 183 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 184 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 185 | |
d2e4a39e | 186 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 187 | |
d2e4a39e | 188 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 189 | |
d2e4a39e | 190 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 191 | |
d2e4a39e | 192 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 193 | |
d2e4a39e | 194 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 195 | struct value **); |
14f9c5c9 | 196 | |
52ce6436 PH |
197 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int); |
198 | ||
4c4b4cd2 PH |
199 | static struct value *coerce_unspec_val_to_type (struct value *, |
200 | struct type *); | |
14f9c5c9 | 201 | |
d2e4a39e | 202 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 203 | |
d2e4a39e | 204 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 205 | |
d2e4a39e | 206 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 207 | |
d2e4a39e | 208 | static int is_name_suffix (const char *); |
14f9c5c9 | 209 | |
d2e4a39e | 210 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 211 | |
d2e4a39e | 212 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 213 | |
4c4b4cd2 PH |
214 | static LONGEST pos_atr (struct value *); |
215 | ||
d2e4a39e | 216 | static struct value *value_pos_atr (struct value *); |
14f9c5c9 | 217 | |
d2e4a39e | 218 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 219 | |
4c4b4cd2 PH |
220 | static struct symbol *standard_lookup (const char *, const struct block *, |
221 | domain_enum); | |
14f9c5c9 | 222 | |
4c4b4cd2 PH |
223 | static struct value *ada_search_struct_field (char *, struct value *, int, |
224 | struct type *); | |
225 | ||
226 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
227 | struct type *); | |
228 | ||
76a01679 | 229 | static int find_struct_field (char *, struct type *, int, |
52ce6436 | 230 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
231 | |
232 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
233 | struct value *); | |
234 | ||
235 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 236 | |
4c4b4cd2 PH |
237 | static int ada_resolve_function (struct ada_symbol_info *, int, |
238 | struct value **, int, const char *, | |
239 | struct type *); | |
240 | ||
241 | static struct value *ada_coerce_to_simple_array (struct value *); | |
242 | ||
243 | static int ada_is_direct_array_type (struct type *); | |
244 | ||
72d5681a PH |
245 | static void ada_language_arch_info (struct gdbarch *, |
246 | struct language_arch_info *); | |
714e53ab PH |
247 | |
248 | static void check_size (const struct type *); | |
52ce6436 PH |
249 | |
250 | static struct value *ada_index_struct_field (int, struct value *, int, | |
251 | struct type *); | |
252 | ||
253 | static struct value *assign_aggregate (struct value *, struct value *, | |
254 | struct expression *, int *, enum noside); | |
255 | ||
256 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
257 | struct expression *, | |
258 | int *, LONGEST *, int *, | |
259 | int, LONGEST, LONGEST); | |
260 | ||
261 | static void aggregate_assign_positional (struct value *, struct value *, | |
262 | struct expression *, | |
263 | int *, LONGEST *, int *, int, | |
264 | LONGEST, LONGEST); | |
265 | ||
266 | ||
267 | static void aggregate_assign_others (struct value *, struct value *, | |
268 | struct expression *, | |
269 | int *, LONGEST *, int, LONGEST, LONGEST); | |
270 | ||
271 | ||
272 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
273 | ||
274 | ||
275 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
276 | int *, enum noside); | |
277 | ||
278 | static void ada_forward_operator_length (struct expression *, int, int *, | |
279 | int *); | |
4c4b4cd2 PH |
280 | \f |
281 | ||
76a01679 | 282 | |
4c4b4cd2 | 283 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
284 | static unsigned int varsize_limit; |
285 | ||
4c4b4cd2 PH |
286 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
287 | returned by a function that does not return a const char *. */ | |
288 | static char *ada_completer_word_break_characters = | |
289 | #ifdef VMS | |
290 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
291 | #else | |
14f9c5c9 | 292 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 293 | #endif |
14f9c5c9 | 294 | |
4c4b4cd2 | 295 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 296 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 297 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 298 | |
4c4b4cd2 PH |
299 | /* Limit on the number of warnings to raise per expression evaluation. */ |
300 | static int warning_limit = 2; | |
301 | ||
302 | /* Number of warning messages issued; reset to 0 by cleanups after | |
303 | expression evaluation. */ | |
304 | static int warnings_issued = 0; | |
305 | ||
306 | static const char *known_runtime_file_name_patterns[] = { | |
307 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
308 | }; | |
309 | ||
310 | static const char *known_auxiliary_function_name_patterns[] = { | |
311 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
312 | }; | |
313 | ||
314 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
315 | static struct obstack symbol_list_obstack; | |
316 | ||
317 | /* Utilities */ | |
318 | ||
96d887e8 | 319 | |
4c4b4cd2 PH |
320 | static char * |
321 | ada_get_gdb_completer_word_break_characters (void) | |
322 | { | |
323 | return ada_completer_word_break_characters; | |
324 | } | |
325 | ||
e79af960 JB |
326 | /* Print an array element index using the Ada syntax. */ |
327 | ||
328 | static void | |
329 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
330 | int format, enum val_prettyprint pretty) | |
331 | { | |
332 | LA_VALUE_PRINT (index_value, stream, format, pretty); | |
333 | fprintf_filtered (stream, " => "); | |
334 | } | |
335 | ||
4c4b4cd2 PH |
336 | /* Read the string located at ADDR from the inferior and store the |
337 | result into BUF. */ | |
338 | ||
339 | static void | |
14f9c5c9 AS |
340 | extract_string (CORE_ADDR addr, char *buf) |
341 | { | |
d2e4a39e | 342 | int char_index = 0; |
14f9c5c9 | 343 | |
4c4b4cd2 PH |
344 | /* Loop, reading one byte at a time, until we reach the '\000' |
345 | end-of-string marker. */ | |
d2e4a39e AS |
346 | do |
347 | { | |
348 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 349 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
350 | char_index++; |
351 | } | |
352 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
353 | } |
354 | ||
f27cf670 | 355 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 356 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 357 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 358 | |
f27cf670 AS |
359 | void * |
360 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 361 | { |
d2e4a39e AS |
362 | if (*size < min_size) |
363 | { | |
364 | *size *= 2; | |
365 | if (*size < min_size) | |
4c4b4cd2 | 366 | *size = min_size; |
f27cf670 | 367 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 368 | } |
f27cf670 | 369 | return vect; |
14f9c5c9 AS |
370 | } |
371 | ||
372 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 373 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
374 | |
375 | static int | |
ebf56fd3 | 376 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
377 | { |
378 | int len = strlen (target); | |
d2e4a39e | 379 | return |
4c4b4cd2 PH |
380 | (strncmp (field_name, target, len) == 0 |
381 | && (field_name[len] == '\0' | |
382 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
383 | && strcmp (field_name + strlen (field_name) - 6, |
384 | "___XVN") != 0))); | |
14f9c5c9 AS |
385 | } |
386 | ||
387 | ||
4c4b4cd2 PH |
388 | /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches |
389 | FIELD_NAME, and return its index. This function also handles fields | |
390 | whose name have ___ suffixes because the compiler sometimes alters | |
391 | their name by adding such a suffix to represent fields with certain | |
392 | constraints. If the field could not be found, return a negative | |
393 | number if MAYBE_MISSING is set. Otherwise raise an error. */ | |
394 | ||
395 | int | |
396 | ada_get_field_index (const struct type *type, const char *field_name, | |
397 | int maybe_missing) | |
398 | { | |
399 | int fieldno; | |
400 | for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) | |
401 | if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) | |
402 | return fieldno; | |
403 | ||
404 | if (!maybe_missing) | |
323e0a4a | 405 | error (_("Unable to find field %s in struct %s. Aborting"), |
4c4b4cd2 PH |
406 | field_name, TYPE_NAME (type)); |
407 | ||
408 | return -1; | |
409 | } | |
410 | ||
411 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
412 | |
413 | int | |
d2e4a39e | 414 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
415 | { |
416 | if (name == NULL) | |
417 | return 0; | |
d2e4a39e | 418 | else |
14f9c5c9 | 419 | { |
d2e4a39e | 420 | const char *p = strstr (name, "___"); |
14f9c5c9 | 421 | if (p == NULL) |
4c4b4cd2 | 422 | return strlen (name); |
14f9c5c9 | 423 | else |
4c4b4cd2 | 424 | return p - name; |
14f9c5c9 AS |
425 | } |
426 | } | |
427 | ||
4c4b4cd2 PH |
428 | /* Return non-zero if SUFFIX is a suffix of STR. |
429 | Return zero if STR is null. */ | |
430 | ||
14f9c5c9 | 431 | static int |
d2e4a39e | 432 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
433 | { |
434 | int len1, len2; | |
435 | if (str == NULL) | |
436 | return 0; | |
437 | len1 = strlen (str); | |
438 | len2 = strlen (suffix); | |
4c4b4cd2 | 439 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
440 | } |
441 | ||
442 | /* Create a value of type TYPE whose contents come from VALADDR, if it | |
4c4b4cd2 PH |
443 | is non-null, and whose memory address (in the inferior) is |
444 | ADDRESS. */ | |
445 | ||
d2e4a39e | 446 | struct value * |
10a2c479 | 447 | value_from_contents_and_address (struct type *type, |
fc1a4b47 | 448 | const gdb_byte *valaddr, |
4c4b4cd2 | 449 | CORE_ADDR address) |
14f9c5c9 | 450 | { |
d2e4a39e AS |
451 | struct value *v = allocate_value (type); |
452 | if (valaddr == NULL) | |
dfa52d88 | 453 | set_value_lazy (v, 1); |
14f9c5c9 | 454 | else |
990a07ab | 455 | memcpy (value_contents_raw (v), valaddr, TYPE_LENGTH (type)); |
14f9c5c9 AS |
456 | VALUE_ADDRESS (v) = address; |
457 | if (address != 0) | |
458 | VALUE_LVAL (v) = lval_memory; | |
459 | return v; | |
460 | } | |
461 | ||
4c4b4cd2 PH |
462 | /* The contents of value VAL, treated as a value of type TYPE. The |
463 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 464 | |
d2e4a39e | 465 | static struct value * |
4c4b4cd2 | 466 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 467 | { |
61ee279c | 468 | type = ada_check_typedef (type); |
df407dfe | 469 | if (value_type (val) == type) |
4c4b4cd2 | 470 | return val; |
d2e4a39e | 471 | else |
14f9c5c9 | 472 | { |
4c4b4cd2 PH |
473 | struct value *result; |
474 | ||
475 | /* Make sure that the object size is not unreasonable before | |
476 | trying to allocate some memory for it. */ | |
714e53ab | 477 | check_size (type); |
4c4b4cd2 PH |
478 | |
479 | result = allocate_value (type); | |
480 | VALUE_LVAL (result) = VALUE_LVAL (val); | |
9bbda503 AC |
481 | set_value_bitsize (result, value_bitsize (val)); |
482 | set_value_bitpos (result, value_bitpos (val)); | |
df407dfe | 483 | VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val); |
d69fe07e | 484 | if (value_lazy (val) |
df407dfe | 485 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) |
dfa52d88 | 486 | set_value_lazy (result, 1); |
d2e4a39e | 487 | else |
0fd88904 | 488 | memcpy (value_contents_raw (result), value_contents (val), |
4c4b4cd2 | 489 | TYPE_LENGTH (type)); |
14f9c5c9 AS |
490 | return result; |
491 | } | |
492 | } | |
493 | ||
fc1a4b47 AC |
494 | static const gdb_byte * |
495 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
496 | { |
497 | if (valaddr == NULL) | |
498 | return NULL; | |
499 | else | |
500 | return valaddr + offset; | |
501 | } | |
502 | ||
503 | static CORE_ADDR | |
ebf56fd3 | 504 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
505 | { |
506 | if (address == 0) | |
507 | return 0; | |
d2e4a39e | 508 | else |
14f9c5c9 AS |
509 | return address + offset; |
510 | } | |
511 | ||
4c4b4cd2 PH |
512 | /* Issue a warning (as for the definition of warning in utils.c, but |
513 | with exactly one argument rather than ...), unless the limit on the | |
514 | number of warnings has passed during the evaluation of the current | |
515 | expression. */ | |
a2249542 | 516 | |
77109804 AC |
517 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
518 | provided by "complaint". */ | |
519 | static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2); | |
520 | ||
14f9c5c9 | 521 | static void |
a2249542 | 522 | lim_warning (const char *format, ...) |
14f9c5c9 | 523 | { |
a2249542 MK |
524 | va_list args; |
525 | va_start (args, format); | |
526 | ||
4c4b4cd2 PH |
527 | warnings_issued += 1; |
528 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
529 | vwarning (format, args); |
530 | ||
531 | va_end (args); | |
4c4b4cd2 PH |
532 | } |
533 | ||
714e53ab PH |
534 | /* Issue an error if the size of an object of type T is unreasonable, |
535 | i.e. if it would be a bad idea to allocate a value of this type in | |
536 | GDB. */ | |
537 | ||
538 | static void | |
539 | check_size (const struct type *type) | |
540 | { | |
541 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 542 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
543 | } |
544 | ||
545 | ||
c3e5cd34 PH |
546 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
547 | gdbtypes.h, but some of the necessary definitions in that file | |
548 | seem to have gone missing. */ | |
549 | ||
550 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 551 | static LONGEST |
c3e5cd34 | 552 | max_of_size (int size) |
4c4b4cd2 | 553 | { |
76a01679 JB |
554 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
555 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
556 | } |
557 | ||
c3e5cd34 | 558 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 559 | static LONGEST |
c3e5cd34 | 560 | min_of_size (int size) |
4c4b4cd2 | 561 | { |
c3e5cd34 | 562 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
563 | } |
564 | ||
c3e5cd34 | 565 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 566 | static ULONGEST |
c3e5cd34 | 567 | umax_of_size (int size) |
4c4b4cd2 | 568 | { |
76a01679 JB |
569 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
570 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
571 | } |
572 | ||
c3e5cd34 PH |
573 | /* Maximum value of integral type T, as a signed quantity. */ |
574 | static LONGEST | |
575 | max_of_type (struct type *t) | |
4c4b4cd2 | 576 | { |
c3e5cd34 PH |
577 | if (TYPE_UNSIGNED (t)) |
578 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
579 | else | |
580 | return max_of_size (TYPE_LENGTH (t)); | |
581 | } | |
582 | ||
583 | /* Minimum value of integral type T, as a signed quantity. */ | |
584 | static LONGEST | |
585 | min_of_type (struct type *t) | |
586 | { | |
587 | if (TYPE_UNSIGNED (t)) | |
588 | return 0; | |
589 | else | |
590 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
591 | } |
592 | ||
593 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
594 | static struct value * | |
595 | discrete_type_high_bound (struct type *type) | |
596 | { | |
76a01679 | 597 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
598 | { |
599 | case TYPE_CODE_RANGE: | |
600 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 601 | TYPE_HIGH_BOUND (type)); |
4c4b4cd2 | 602 | case TYPE_CODE_ENUM: |
76a01679 JB |
603 | return |
604 | value_from_longest (type, | |
605 | TYPE_FIELD_BITPOS (type, | |
606 | TYPE_NFIELDS (type) - 1)); | |
607 | case TYPE_CODE_INT: | |
c3e5cd34 | 608 | return value_from_longest (type, max_of_type (type)); |
4c4b4cd2 | 609 | default: |
323e0a4a | 610 | error (_("Unexpected type in discrete_type_high_bound.")); |
4c4b4cd2 PH |
611 | } |
612 | } | |
613 | ||
614 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
615 | static struct value * | |
616 | discrete_type_low_bound (struct type *type) | |
617 | { | |
76a01679 | 618 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
619 | { |
620 | case TYPE_CODE_RANGE: | |
621 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 622 | TYPE_LOW_BOUND (type)); |
4c4b4cd2 | 623 | case TYPE_CODE_ENUM: |
76a01679 JB |
624 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0)); |
625 | case TYPE_CODE_INT: | |
c3e5cd34 | 626 | return value_from_longest (type, min_of_type (type)); |
4c4b4cd2 | 627 | default: |
323e0a4a | 628 | error (_("Unexpected type in discrete_type_low_bound.")); |
4c4b4cd2 PH |
629 | } |
630 | } | |
631 | ||
632 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 633 | non-range scalar type. */ |
4c4b4cd2 PH |
634 | |
635 | static struct type * | |
636 | base_type (struct type *type) | |
637 | { | |
638 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
639 | { | |
76a01679 JB |
640 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
641 | return type; | |
4c4b4cd2 PH |
642 | type = TYPE_TARGET_TYPE (type); |
643 | } | |
644 | return type; | |
14f9c5c9 | 645 | } |
4c4b4cd2 | 646 | \f |
76a01679 | 647 | |
4c4b4cd2 | 648 | /* Language Selection */ |
14f9c5c9 AS |
649 | |
650 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
651 | (the main program is in Ada iif the adainit symbol is found). | |
652 | ||
4c4b4cd2 | 653 | MAIN_PST is not used. */ |
d2e4a39e | 654 | |
14f9c5c9 | 655 | enum language |
d2e4a39e | 656 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 657 | struct partial_symtab *main_pst) |
14f9c5c9 | 658 | { |
d2e4a39e | 659 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
660 | (struct objfile *) NULL) != NULL) |
661 | return language_ada; | |
14f9c5c9 AS |
662 | |
663 | return lang; | |
664 | } | |
96d887e8 PH |
665 | |
666 | /* If the main procedure is written in Ada, then return its name. | |
667 | The result is good until the next call. Return NULL if the main | |
668 | procedure doesn't appear to be in Ada. */ | |
669 | ||
670 | char * | |
671 | ada_main_name (void) | |
672 | { | |
673 | struct minimal_symbol *msym; | |
674 | CORE_ADDR main_program_name_addr; | |
675 | static char main_program_name[1024]; | |
6c038f32 | 676 | |
96d887e8 PH |
677 | /* For Ada, the name of the main procedure is stored in a specific |
678 | string constant, generated by the binder. Look for that symbol, | |
679 | extract its address, and then read that string. If we didn't find | |
680 | that string, then most probably the main procedure is not written | |
681 | in Ada. */ | |
682 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
683 | ||
684 | if (msym != NULL) | |
685 | { | |
686 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); | |
687 | if (main_program_name_addr == 0) | |
323e0a4a | 688 | error (_("Invalid address for Ada main program name.")); |
96d887e8 PH |
689 | |
690 | extract_string (main_program_name_addr, main_program_name); | |
691 | return main_program_name; | |
692 | } | |
693 | ||
694 | /* The main procedure doesn't seem to be in Ada. */ | |
695 | return NULL; | |
696 | } | |
14f9c5c9 | 697 | \f |
4c4b4cd2 | 698 | /* Symbols */ |
d2e4a39e | 699 | |
4c4b4cd2 PH |
700 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
701 | of NULLs. */ | |
14f9c5c9 | 702 | |
d2e4a39e AS |
703 | const struct ada_opname_map ada_opname_table[] = { |
704 | {"Oadd", "\"+\"", BINOP_ADD}, | |
705 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
706 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
707 | {"Odivide", "\"/\"", BINOP_DIV}, | |
708 | {"Omod", "\"mod\"", BINOP_MOD}, | |
709 | {"Orem", "\"rem\"", BINOP_REM}, | |
710 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
711 | {"Olt", "\"<\"", BINOP_LESS}, | |
712 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
713 | {"Ogt", "\">\"", BINOP_GTR}, | |
714 | {"Oge", "\">=\"", BINOP_GEQ}, | |
715 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
716 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
717 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
718 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
719 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
720 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
721 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
722 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
723 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
724 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
725 | {NULL, NULL} | |
14f9c5c9 AS |
726 | }; |
727 | ||
4c4b4cd2 PH |
728 | /* Return non-zero if STR should be suppressed in info listings. */ |
729 | ||
14f9c5c9 | 730 | static int |
d2e4a39e | 731 | is_suppressed_name (const char *str) |
14f9c5c9 | 732 | { |
4c4b4cd2 | 733 | if (strncmp (str, "_ada_", 5) == 0) |
14f9c5c9 AS |
734 | str += 5; |
735 | if (str[0] == '_' || str[0] == '\000') | |
736 | return 1; | |
737 | else | |
738 | { | |
d2e4a39e AS |
739 | const char *p; |
740 | const char *suffix = strstr (str, "___"); | |
14f9c5c9 | 741 | if (suffix != NULL && suffix[3] != 'X') |
4c4b4cd2 | 742 | return 1; |
14f9c5c9 | 743 | if (suffix == NULL) |
4c4b4cd2 | 744 | suffix = str + strlen (str); |
d2e4a39e | 745 | for (p = suffix - 1; p != str; p -= 1) |
4c4b4cd2 PH |
746 | if (isupper (*p)) |
747 | { | |
748 | int i; | |
749 | if (p[0] == 'X' && p[-1] != '_') | |
750 | goto OK; | |
751 | if (*p != 'O') | |
752 | return 1; | |
753 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) | |
754 | if (strncmp (ada_opname_table[i].encoded, p, | |
755 | strlen (ada_opname_table[i].encoded)) == 0) | |
756 | goto OK; | |
757 | return 1; | |
758 | OK:; | |
759 | } | |
14f9c5c9 AS |
760 | return 0; |
761 | } | |
762 | } | |
763 | ||
4c4b4cd2 PH |
764 | /* The "encoded" form of DECODED, according to GNAT conventions. |
765 | The result is valid until the next call to ada_encode. */ | |
766 | ||
14f9c5c9 | 767 | char * |
4c4b4cd2 | 768 | ada_encode (const char *decoded) |
14f9c5c9 | 769 | { |
4c4b4cd2 PH |
770 | static char *encoding_buffer = NULL; |
771 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 772 | const char *p; |
14f9c5c9 | 773 | int k; |
d2e4a39e | 774 | |
4c4b4cd2 | 775 | if (decoded == NULL) |
14f9c5c9 AS |
776 | return NULL; |
777 | ||
4c4b4cd2 PH |
778 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
779 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
780 | |
781 | k = 0; | |
4c4b4cd2 | 782 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 783 | { |
4c4b4cd2 PH |
784 | if (!ADA_RETAIN_DOTS && *p == '.') |
785 | { | |
786 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
787 | k += 2; | |
788 | } | |
14f9c5c9 | 789 | else if (*p == '"') |
4c4b4cd2 PH |
790 | { |
791 | const struct ada_opname_map *mapping; | |
792 | ||
793 | for (mapping = ada_opname_table; | |
1265e4aa JB |
794 | mapping->encoded != NULL |
795 | && strncmp (mapping->decoded, p, | |
796 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
797 | ; |
798 | if (mapping->encoded == NULL) | |
323e0a4a | 799 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
800 | strcpy (encoding_buffer + k, mapping->encoded); |
801 | k += strlen (mapping->encoded); | |
802 | break; | |
803 | } | |
d2e4a39e | 804 | else |
4c4b4cd2 PH |
805 | { |
806 | encoding_buffer[k] = *p; | |
807 | k += 1; | |
808 | } | |
14f9c5c9 AS |
809 | } |
810 | ||
4c4b4cd2 PH |
811 | encoding_buffer[k] = '\0'; |
812 | return encoding_buffer; | |
14f9c5c9 AS |
813 | } |
814 | ||
815 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
816 | quotes, unfolded, but with the quotes stripped away. Result good |
817 | to next call. */ | |
818 | ||
d2e4a39e AS |
819 | char * |
820 | ada_fold_name (const char *name) | |
14f9c5c9 | 821 | { |
d2e4a39e | 822 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
823 | static size_t fold_buffer_size = 0; |
824 | ||
825 | int len = strlen (name); | |
d2e4a39e | 826 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
827 | |
828 | if (name[0] == '\'') | |
829 | { | |
d2e4a39e AS |
830 | strncpy (fold_buffer, name + 1, len - 2); |
831 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
832 | } |
833 | else | |
834 | { | |
835 | int i; | |
836 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 837 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
838 | } |
839 | ||
840 | return fold_buffer; | |
841 | } | |
842 | ||
529cad9c PH |
843 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
844 | ||
845 | static int | |
846 | is_lower_alphanum (const char c) | |
847 | { | |
848 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
849 | } | |
850 | ||
29480c32 JB |
851 | /* Remove either of these suffixes: |
852 | . .{DIGIT}+ | |
853 | . ${DIGIT}+ | |
854 | . ___{DIGIT}+ | |
855 | . __{DIGIT}+. | |
856 | These are suffixes introduced by the compiler for entities such as | |
857 | nested subprogram for instance, in order to avoid name clashes. | |
858 | They do not serve any purpose for the debugger. */ | |
859 | ||
860 | static void | |
861 | ada_remove_trailing_digits (const char *encoded, int *len) | |
862 | { | |
863 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
864 | { | |
865 | int i = *len - 2; | |
866 | while (i > 0 && isdigit (encoded[i])) | |
867 | i--; | |
868 | if (i >= 0 && encoded[i] == '.') | |
869 | *len = i; | |
870 | else if (i >= 0 && encoded[i] == '$') | |
871 | *len = i; | |
872 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
873 | *len = i - 2; | |
874 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) | |
875 | *len = i - 1; | |
876 | } | |
877 | } | |
878 | ||
879 | /* Remove the suffix introduced by the compiler for protected object | |
880 | subprograms. */ | |
881 | ||
882 | static void | |
883 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
884 | { | |
885 | /* Remove trailing N. */ | |
886 | ||
887 | /* Protected entry subprograms are broken into two | |
888 | separate subprograms: The first one is unprotected, and has | |
889 | a 'N' suffix; the second is the protected version, and has | |
890 | the 'P' suffix. The second calls the first one after handling | |
891 | the protection. Since the P subprograms are internally generated, | |
892 | we leave these names undecoded, giving the user a clue that this | |
893 | entity is internal. */ | |
894 | ||
895 | if (*len > 1 | |
896 | && encoded[*len - 1] == 'N' | |
897 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
898 | *len = *len - 1; | |
899 | } | |
900 | ||
901 | /* If ENCODED follows the GNAT entity encoding conventions, then return | |
902 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
903 | replaced by ENCODED. | |
14f9c5c9 | 904 | |
4c4b4cd2 | 905 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 906 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
907 | is returned. */ |
908 | ||
909 | const char * | |
910 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
911 | { |
912 | int i, j; | |
913 | int len0; | |
d2e4a39e | 914 | const char *p; |
4c4b4cd2 | 915 | char *decoded; |
14f9c5c9 | 916 | int at_start_name; |
4c4b4cd2 PH |
917 | static char *decoding_buffer = NULL; |
918 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 919 | |
29480c32 JB |
920 | /* The name of the Ada main procedure starts with "_ada_". |
921 | This prefix is not part of the decoded name, so skip this part | |
922 | if we see this prefix. */ | |
4c4b4cd2 PH |
923 | if (strncmp (encoded, "_ada_", 5) == 0) |
924 | encoded += 5; | |
14f9c5c9 | 925 | |
29480c32 JB |
926 | /* If the name starts with '_', then it is not a properly encoded |
927 | name, so do not attempt to decode it. Similarly, if the name | |
928 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 929 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
930 | goto Suppress; |
931 | ||
4c4b4cd2 | 932 | len0 = strlen (encoded); |
4c4b4cd2 | 933 | |
29480c32 JB |
934 | ada_remove_trailing_digits (encoded, &len0); |
935 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 936 | |
4c4b4cd2 PH |
937 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
938 | the suffix is located before the current "end" of ENCODED. We want | |
939 | to avoid re-matching parts of ENCODED that have previously been | |
940 | marked as discarded (by decrementing LEN0). */ | |
941 | p = strstr (encoded, "___"); | |
942 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
943 | { |
944 | if (p[3] == 'X') | |
4c4b4cd2 | 945 | len0 = p - encoded; |
14f9c5c9 | 946 | else |
4c4b4cd2 | 947 | goto Suppress; |
14f9c5c9 | 948 | } |
4c4b4cd2 | 949 | |
29480c32 JB |
950 | /* Remove any trailing TKB suffix. It tells us that this symbol |
951 | is for the body of a task, but that information does not actually | |
952 | appear in the decoded name. */ | |
953 | ||
4c4b4cd2 | 954 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) |
14f9c5c9 | 955 | len0 -= 3; |
76a01679 | 956 | |
29480c32 JB |
957 | /* Remove trailing "B" suffixes. */ |
958 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
959 | ||
4c4b4cd2 | 960 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
961 | len0 -= 1; |
962 | ||
4c4b4cd2 | 963 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 964 | |
4c4b4cd2 PH |
965 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
966 | decoded = decoding_buffer; | |
14f9c5c9 | 967 | |
29480c32 JB |
968 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
969 | ||
4c4b4cd2 | 970 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 971 | { |
4c4b4cd2 PH |
972 | i = len0 - 2; |
973 | while ((i >= 0 && isdigit (encoded[i])) | |
974 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
975 | i -= 1; | |
976 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
977 | len0 = i - 1; | |
978 | else if (encoded[i] == '$') | |
979 | len0 = i; | |
d2e4a39e | 980 | } |
14f9c5c9 | 981 | |
29480c32 JB |
982 | /* The first few characters that are not alphabetic are not part |
983 | of any encoding we use, so we can copy them over verbatim. */ | |
984 | ||
4c4b4cd2 PH |
985 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
986 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
987 | |
988 | at_start_name = 1; | |
989 | while (i < len0) | |
990 | { | |
29480c32 | 991 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
992 | if (at_start_name && encoded[i] == 'O') |
993 | { | |
994 | int k; | |
995 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
996 | { | |
997 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
998 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
999 | op_len - 1) == 0) | |
1000 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1001 | { |
1002 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1003 | at_start_name = 0; | |
1004 | i += op_len; | |
1005 | j += strlen (ada_opname_table[k].decoded); | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | if (ada_opname_table[k].encoded != NULL) | |
1010 | continue; | |
1011 | } | |
14f9c5c9 AS |
1012 | at_start_name = 0; |
1013 | ||
529cad9c PH |
1014 | /* Replace "TK__" with "__", which will eventually be translated |
1015 | into "." (just below). */ | |
1016 | ||
4c4b4cd2 PH |
1017 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
1018 | i += 2; | |
529cad9c | 1019 | |
29480c32 JB |
1020 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1021 | be translated into "." (just below). These are internal names | |
1022 | generated for anonymous blocks inside which our symbol is nested. */ | |
1023 | ||
1024 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1025 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1026 | && isdigit (encoded [i+4])) | |
1027 | { | |
1028 | int k = i + 5; | |
1029 | ||
1030 | while (k < len0 && isdigit (encoded[k])) | |
1031 | k++; /* Skip any extra digit. */ | |
1032 | ||
1033 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1034 | is indeed followed by "__". */ | |
1035 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1036 | i = k; | |
1037 | } | |
1038 | ||
529cad9c PH |
1039 | /* Remove _E{DIGITS}+[sb] */ |
1040 | ||
1041 | /* Just as for protected object subprograms, there are 2 categories | |
1042 | of subprograms created by the compiler for each entry. The first | |
1043 | one implements the actual entry code, and has a suffix following | |
1044 | the convention above; the second one implements the barrier and | |
1045 | uses the same convention as above, except that the 'E' is replaced | |
1046 | by a 'B'. | |
1047 | ||
1048 | Just as above, we do not decode the name of barrier functions | |
1049 | to give the user a clue that the code he is debugging has been | |
1050 | internally generated. */ | |
1051 | ||
1052 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1053 | && isdigit (encoded[i+2])) | |
1054 | { | |
1055 | int k = i + 3; | |
1056 | ||
1057 | while (k < len0 && isdigit (encoded[k])) | |
1058 | k++; | |
1059 | ||
1060 | if (k < len0 | |
1061 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1062 | { | |
1063 | k++; | |
1064 | /* Just as an extra precaution, make sure that if this | |
1065 | suffix is followed by anything else, it is a '_'. | |
1066 | Otherwise, we matched this sequence by accident. */ | |
1067 | if (k == len0 | |
1068 | || (k < len0 && encoded[k] == '_')) | |
1069 | i = k; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1074 | the GNAT front-end in protected object subprograms. */ | |
1075 | ||
1076 | if (i < len0 + 3 | |
1077 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1078 | { | |
1079 | /* Backtrack a bit up until we reach either the begining of | |
1080 | the encoded name, or "__". Make sure that we only find | |
1081 | digits or lowercase characters. */ | |
1082 | const char *ptr = encoded + i - 1; | |
1083 | ||
1084 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1085 | ptr--; | |
1086 | if (ptr < encoded | |
1087 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1088 | i++; | |
1089 | } | |
1090 | ||
4c4b4cd2 PH |
1091 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1092 | { | |
29480c32 JB |
1093 | /* This is a X[bn]* sequence not separated from the previous |
1094 | part of the name with a non-alpha-numeric character (in other | |
1095 | words, immediately following an alpha-numeric character), then | |
1096 | verify that it is placed at the end of the encoded name. If | |
1097 | not, then the encoding is not valid and we should abort the | |
1098 | decoding. Otherwise, just skip it, it is used in body-nested | |
1099 | package names. */ | |
4c4b4cd2 PH |
1100 | do |
1101 | i += 1; | |
1102 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1103 | if (i < len0) | |
1104 | goto Suppress; | |
1105 | } | |
1106 | else if (!ADA_RETAIN_DOTS | |
1107 | && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') | |
1108 | { | |
29480c32 | 1109 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1110 | decoded[j] = '.'; |
1111 | at_start_name = 1; | |
1112 | i += 2; | |
1113 | j += 1; | |
1114 | } | |
14f9c5c9 | 1115 | else |
4c4b4cd2 | 1116 | { |
29480c32 JB |
1117 | /* It's a character part of the decoded name, so just copy it |
1118 | over. */ | |
4c4b4cd2 PH |
1119 | decoded[j] = encoded[i]; |
1120 | i += 1; | |
1121 | j += 1; | |
1122 | } | |
14f9c5c9 | 1123 | } |
4c4b4cd2 | 1124 | decoded[j] = '\000'; |
14f9c5c9 | 1125 | |
29480c32 JB |
1126 | /* Decoded names should never contain any uppercase character. |
1127 | Double-check this, and abort the decoding if we find one. */ | |
1128 | ||
4c4b4cd2 PH |
1129 | for (i = 0; decoded[i] != '\0'; i += 1) |
1130 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1131 | goto Suppress; |
1132 | ||
4c4b4cd2 PH |
1133 | if (strcmp (decoded, encoded) == 0) |
1134 | return encoded; | |
1135 | else | |
1136 | return decoded; | |
14f9c5c9 AS |
1137 | |
1138 | Suppress: | |
4c4b4cd2 PH |
1139 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1140 | decoded = decoding_buffer; | |
1141 | if (encoded[0] == '<') | |
1142 | strcpy (decoded, encoded); | |
14f9c5c9 | 1143 | else |
4c4b4cd2 PH |
1144 | sprintf (decoded, "<%s>", encoded); |
1145 | return decoded; | |
1146 | ||
1147 | } | |
1148 | ||
1149 | /* Table for keeping permanent unique copies of decoded names. Once | |
1150 | allocated, names in this table are never released. While this is a | |
1151 | storage leak, it should not be significant unless there are massive | |
1152 | changes in the set of decoded names in successive versions of a | |
1153 | symbol table loaded during a single session. */ | |
1154 | static struct htab *decoded_names_store; | |
1155 | ||
1156 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1157 | in the language-specific part of GSYMBOL, if it has not been | |
1158 | previously computed. Tries to save the decoded name in the same | |
1159 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1160 | in any case, the decoded symbol has a lifetime at least that of | |
1161 | GSYMBOL). | |
1162 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
1163 | const, but nevertheless modified to a semantically equivalent form | |
1164 | when a decoded name is cached in it. | |
76a01679 | 1165 | */ |
4c4b4cd2 | 1166 | |
76a01679 JB |
1167 | char * |
1168 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 1169 | { |
76a01679 | 1170 | char **resultp = |
4c4b4cd2 PH |
1171 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
1172 | if (*resultp == NULL) | |
1173 | { | |
1174 | const char *decoded = ada_decode (gsymbol->name); | |
1175 | if (gsymbol->bfd_section != NULL) | |
76a01679 JB |
1176 | { |
1177 | bfd *obfd = gsymbol->bfd_section->owner; | |
1178 | if (obfd != NULL) | |
1179 | { | |
1180 | struct objfile *objf; | |
1181 | ALL_OBJFILES (objf) | |
1182 | { | |
1183 | if (obfd == objf->obfd) | |
1184 | { | |
1185 | *resultp = obsavestring (decoded, strlen (decoded), | |
1186 | &objf->objfile_obstack); | |
1187 | break; | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | } | |
4c4b4cd2 | 1192 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1193 | case, we put the result on the heap. Since we only decode |
1194 | when needed, we hope this usually does not cause a | |
1195 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1196 | if (*resultp == NULL) |
76a01679 JB |
1197 | { |
1198 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1199 | decoded, INSERT); | |
1200 | if (*slot == NULL) | |
1201 | *slot = xstrdup (decoded); | |
1202 | *resultp = *slot; | |
1203 | } | |
4c4b4cd2 | 1204 | } |
14f9c5c9 | 1205 | |
4c4b4cd2 PH |
1206 | return *resultp; |
1207 | } | |
76a01679 JB |
1208 | |
1209 | char * | |
1210 | ada_la_decode (const char *encoded, int options) | |
4c4b4cd2 PH |
1211 | { |
1212 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1213 | } |
1214 | ||
1215 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1216 | suffixes that encode debugging information or leading _ada_ on |
1217 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1218 | information that is ignored). If WILD, then NAME need only match a | |
1219 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1220 | either argument is NULL. */ | |
14f9c5c9 AS |
1221 | |
1222 | int | |
d2e4a39e | 1223 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1224 | { |
1225 | if (sym_name == NULL || name == NULL) | |
1226 | return 0; | |
1227 | else if (wild) | |
1228 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1229 | else |
1230 | { | |
1231 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1232 | return (strncmp (sym_name, name, len_name) == 0 |
1233 | && is_name_suffix (sym_name + len_name)) | |
1234 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1235 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1236 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1237 | } |
14f9c5c9 AS |
1238 | } |
1239 | ||
4c4b4cd2 PH |
1240 | /* True (non-zero) iff, in Ada mode, the symbol SYM should be |
1241 | suppressed in info listings. */ | |
14f9c5c9 AS |
1242 | |
1243 | int | |
ebf56fd3 | 1244 | ada_suppress_symbol_printing (struct symbol *sym) |
14f9c5c9 | 1245 | { |
176620f1 | 1246 | if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) |
14f9c5c9 | 1247 | return 1; |
d2e4a39e | 1248 | else |
4c4b4cd2 | 1249 | return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); |
14f9c5c9 | 1250 | } |
14f9c5c9 | 1251 | \f |
d2e4a39e | 1252 | |
4c4b4cd2 | 1253 | /* Arrays */ |
14f9c5c9 | 1254 | |
4c4b4cd2 | 1255 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1256 | |
d2e4a39e AS |
1257 | static char *bound_name[] = { |
1258 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1259 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1260 | }; | |
1261 | ||
1262 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1263 | ||
4c4b4cd2 | 1264 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1265 | |
4c4b4cd2 | 1266 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1267 | |
1268 | static void | |
ebf56fd3 | 1269 | modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) |
14f9c5c9 | 1270 | { |
4c4b4cd2 | 1271 | modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1272 | } |
1273 | ||
1274 | ||
4c4b4cd2 PH |
1275 | /* The desc_* routines return primitive portions of array descriptors |
1276 | (fat pointers). */ | |
14f9c5c9 AS |
1277 | |
1278 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1279 | level of indirection, if needed. */ |
1280 | ||
d2e4a39e AS |
1281 | static struct type * |
1282 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1283 | { |
1284 | if (type == NULL) | |
1285 | return NULL; | |
61ee279c | 1286 | type = ada_check_typedef (type); |
1265e4aa JB |
1287 | if (type != NULL |
1288 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1289 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1290 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1291 | else |
1292 | return type; | |
1293 | } | |
1294 | ||
4c4b4cd2 PH |
1295 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1296 | ||
14f9c5c9 | 1297 | static int |
d2e4a39e | 1298 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1299 | { |
d2e4a39e | 1300 | return |
14f9c5c9 AS |
1301 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1302 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1303 | } | |
1304 | ||
4c4b4cd2 PH |
1305 | /* The descriptor type for thin pointer type TYPE. */ |
1306 | ||
d2e4a39e AS |
1307 | static struct type * |
1308 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1309 | { |
d2e4a39e | 1310 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1311 | if (base_type == NULL) |
1312 | return NULL; | |
1313 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1314 | return base_type; | |
d2e4a39e | 1315 | else |
14f9c5c9 | 1316 | { |
d2e4a39e | 1317 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1318 | if (alt_type == NULL) |
4c4b4cd2 | 1319 | return base_type; |
14f9c5c9 | 1320 | else |
4c4b4cd2 | 1321 | return alt_type; |
14f9c5c9 AS |
1322 | } |
1323 | } | |
1324 | ||
4c4b4cd2 PH |
1325 | /* A pointer to the array data for thin-pointer value VAL. */ |
1326 | ||
d2e4a39e AS |
1327 | static struct value * |
1328 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1329 | { |
df407dfe | 1330 | struct type *type = value_type (val); |
14f9c5c9 | 1331 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d2e4a39e | 1332 | return value_cast (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1333 | value_copy (val)); |
d2e4a39e | 1334 | else |
14f9c5c9 | 1335 | return value_from_longest (desc_data_type (thin_descriptor_type (type)), |
df407dfe | 1336 | VALUE_ADDRESS (val) + value_offset (val)); |
14f9c5c9 AS |
1337 | } |
1338 | ||
4c4b4cd2 PH |
1339 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1340 | ||
14f9c5c9 | 1341 | static int |
d2e4a39e | 1342 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1343 | { |
1344 | type = desc_base_type (type); | |
1345 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1346 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1347 | } |
1348 | ||
4c4b4cd2 PH |
1349 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1350 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1351 | |
d2e4a39e AS |
1352 | static struct type * |
1353 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1354 | { |
d2e4a39e | 1355 | struct type *r; |
14f9c5c9 AS |
1356 | |
1357 | type = desc_base_type (type); | |
1358 | ||
1359 | if (type == NULL) | |
1360 | return NULL; | |
1361 | else if (is_thin_pntr (type)) | |
1362 | { | |
1363 | type = thin_descriptor_type (type); | |
1364 | if (type == NULL) | |
4c4b4cd2 | 1365 | return NULL; |
14f9c5c9 AS |
1366 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1367 | if (r != NULL) | |
61ee279c | 1368 | return ada_check_typedef (r); |
14f9c5c9 AS |
1369 | } |
1370 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1371 | { | |
1372 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1373 | if (r != NULL) | |
61ee279c | 1374 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1375 | } |
1376 | return NULL; | |
1377 | } | |
1378 | ||
1379 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1380 | one, a pointer to its bounds data. Otherwise NULL. */ |
1381 | ||
d2e4a39e AS |
1382 | static struct value * |
1383 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1384 | { |
df407dfe | 1385 | struct type *type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1386 | if (is_thin_pntr (type)) |
14f9c5c9 | 1387 | { |
d2e4a39e | 1388 | struct type *bounds_type = |
4c4b4cd2 | 1389 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1390 | LONGEST addr; |
1391 | ||
4cdfadb1 | 1392 | if (bounds_type == NULL) |
323e0a4a | 1393 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1394 | |
1395 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1396 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1397 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1398 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1399 | addr = value_as_long (arr); |
d2e4a39e | 1400 | else |
df407dfe | 1401 | addr = VALUE_ADDRESS (arr) + value_offset (arr); |
14f9c5c9 | 1402 | |
d2e4a39e | 1403 | return |
4c4b4cd2 PH |
1404 | value_from_longest (lookup_pointer_type (bounds_type), |
1405 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1406 | } |
1407 | ||
1408 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1409 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
323e0a4a | 1410 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1411 | else |
1412 | return NULL; | |
1413 | } | |
1414 | ||
4c4b4cd2 PH |
1415 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1416 | position of the field containing the address of the bounds data. */ | |
1417 | ||
14f9c5c9 | 1418 | static int |
d2e4a39e | 1419 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1420 | { |
1421 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1422 | } | |
1423 | ||
1424 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1425 | size of the field containing the address of the bounds data. */ |
1426 | ||
14f9c5c9 | 1427 | static int |
d2e4a39e | 1428 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1429 | { |
1430 | type = desc_base_type (type); | |
1431 | ||
d2e4a39e | 1432 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1433 | return TYPE_FIELD_BITSIZE (type, 1); |
1434 | else | |
61ee279c | 1435 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1436 | } |
1437 | ||
4c4b4cd2 | 1438 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
14f9c5c9 | 1439 | pointer to one, the type of its array data (a |
4c4b4cd2 PH |
1440 | pointer-to-array-with-no-bounds type); otherwise, NULL. Use |
1441 | ada_type_of_array to get an array type with bounds data. */ | |
1442 | ||
d2e4a39e AS |
1443 | static struct type * |
1444 | desc_data_type (struct type *type) | |
14f9c5c9 AS |
1445 | { |
1446 | type = desc_base_type (type); | |
1447 | ||
4c4b4cd2 | 1448 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1449 | if (is_thin_pntr (type)) |
d2e4a39e AS |
1450 | return lookup_pointer_type |
1451 | (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); | |
14f9c5c9 AS |
1452 | else if (is_thick_pntr (type)) |
1453 | return lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1454 | else | |
1455 | return NULL; | |
1456 | } | |
1457 | ||
1458 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1459 | its array data. */ | |
4c4b4cd2 | 1460 | |
d2e4a39e AS |
1461 | static struct value * |
1462 | desc_data (struct value *arr) | |
14f9c5c9 | 1463 | { |
df407dfe | 1464 | struct type *type = value_type (arr); |
14f9c5c9 AS |
1465 | if (is_thin_pntr (type)) |
1466 | return thin_data_pntr (arr); | |
1467 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1468 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1469 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1470 | else |
1471 | return NULL; | |
1472 | } | |
1473 | ||
1474 | ||
1475 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1476 | position of the field containing the address of the data. */ |
1477 | ||
14f9c5c9 | 1478 | static int |
d2e4a39e | 1479 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1480 | { |
1481 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1482 | } | |
1483 | ||
1484 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1485 | size of the field containing the address of the data. */ |
1486 | ||
14f9c5c9 | 1487 | static int |
d2e4a39e | 1488 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1489 | { |
1490 | type = desc_base_type (type); | |
1491 | ||
1492 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1493 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1494 | else |
14f9c5c9 AS |
1495 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1496 | } | |
1497 | ||
4c4b4cd2 | 1498 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1499 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1500 | bound, if WHICH is 1. The first bound is I=1. */ |
1501 | ||
d2e4a39e AS |
1502 | static struct value * |
1503 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1504 | { |
d2e4a39e | 1505 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1506 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1507 | } |
1508 | ||
1509 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1510 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1511 | bound, if WHICH is 1. The first bound is I=1. */ |
1512 | ||
14f9c5c9 | 1513 | static int |
d2e4a39e | 1514 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1515 | { |
d2e4a39e | 1516 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1517 | } |
1518 | ||
1519 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1520 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1521 | bound, if WHICH is 1. The first bound is I=1. */ |
1522 | ||
76a01679 | 1523 | static int |
d2e4a39e | 1524 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1525 | { |
1526 | type = desc_base_type (type); | |
1527 | ||
d2e4a39e AS |
1528 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1529 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1530 | else | |
1531 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1532 | } |
1533 | ||
1534 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1535 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1536 | ||
d2e4a39e AS |
1537 | static struct type * |
1538 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1539 | { |
1540 | type = desc_base_type (type); | |
1541 | ||
1542 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1543 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1544 | else | |
14f9c5c9 AS |
1545 | return NULL; |
1546 | } | |
1547 | ||
4c4b4cd2 PH |
1548 | /* The number of index positions in the array-bounds type TYPE. |
1549 | Return 0 if TYPE is NULL. */ | |
1550 | ||
14f9c5c9 | 1551 | static int |
d2e4a39e | 1552 | desc_arity (struct type *type) |
14f9c5c9 AS |
1553 | { |
1554 | type = desc_base_type (type); | |
1555 | ||
1556 | if (type != NULL) | |
1557 | return TYPE_NFIELDS (type) / 2; | |
1558 | return 0; | |
1559 | } | |
1560 | ||
4c4b4cd2 PH |
1561 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1562 | an array descriptor type (representing an unconstrained array | |
1563 | type). */ | |
1564 | ||
76a01679 JB |
1565 | static int |
1566 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1567 | { |
1568 | if (type == NULL) | |
1569 | return 0; | |
61ee279c | 1570 | type = ada_check_typedef (type); |
4c4b4cd2 | 1571 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1572 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1573 | } |
1574 | ||
52ce6436 PH |
1575 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
1576 | * to one. */ | |
1577 | ||
1578 | int | |
1579 | ada_is_array_type (struct type *type) | |
1580 | { | |
1581 | while (type != NULL | |
1582 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1583 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1584 | type = TYPE_TARGET_TYPE (type); | |
1585 | return ada_is_direct_array_type (type); | |
1586 | } | |
1587 | ||
4c4b4cd2 | 1588 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1589 | |
14f9c5c9 | 1590 | int |
4c4b4cd2 | 1591 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1592 | { |
1593 | if (type == NULL) | |
1594 | return 0; | |
61ee279c | 1595 | type = ada_check_typedef (type); |
14f9c5c9 | 1596 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1597 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1598 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1599 | } |
1600 | ||
4c4b4cd2 PH |
1601 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1602 | ||
14f9c5c9 | 1603 | int |
4c4b4cd2 | 1604 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1605 | { |
d2e4a39e | 1606 | struct type *data_type = desc_data_type (type); |
14f9c5c9 AS |
1607 | |
1608 | if (type == NULL) | |
1609 | return 0; | |
61ee279c | 1610 | type = ada_check_typedef (type); |
d2e4a39e | 1611 | return |
14f9c5c9 AS |
1612 | data_type != NULL |
1613 | && ((TYPE_CODE (data_type) == TYPE_CODE_PTR | |
4c4b4cd2 PH |
1614 | && TYPE_TARGET_TYPE (data_type) != NULL |
1615 | && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) | |
1265e4aa | 1616 | || TYPE_CODE (data_type) == TYPE_CODE_ARRAY) |
14f9c5c9 AS |
1617 | && desc_arity (desc_bounds_type (type)) > 0; |
1618 | } | |
1619 | ||
1620 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1621 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1622 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1623 | is still needed. */ |
1624 | ||
14f9c5c9 | 1625 | int |
ebf56fd3 | 1626 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1627 | { |
d2e4a39e | 1628 | return |
14f9c5c9 AS |
1629 | type != NULL |
1630 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1631 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1632 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1633 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1634 | } |
1635 | ||
1636 | ||
4c4b4cd2 | 1637 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1638 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1639 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1640 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1641 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1642 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1643 | a descriptor. */ |
d2e4a39e AS |
1644 | struct type * |
1645 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1646 | { |
df407dfe AC |
1647 | if (ada_is_packed_array_type (value_type (arr))) |
1648 | return decode_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1649 | |
df407dfe AC |
1650 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1651 | return value_type (arr); | |
d2e4a39e AS |
1652 | |
1653 | if (!bounds) | |
1654 | return | |
df407dfe | 1655 | ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (value_type (arr)))); |
14f9c5c9 AS |
1656 | else |
1657 | { | |
d2e4a39e | 1658 | struct type *elt_type; |
14f9c5c9 | 1659 | int arity; |
d2e4a39e | 1660 | struct value *descriptor; |
df407dfe | 1661 | struct objfile *objf = TYPE_OBJFILE (value_type (arr)); |
14f9c5c9 | 1662 | |
df407dfe AC |
1663 | elt_type = ada_array_element_type (value_type (arr), -1); |
1664 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1665 | |
d2e4a39e | 1666 | if (elt_type == NULL || arity == 0) |
df407dfe | 1667 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1668 | |
1669 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1670 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1671 | return NULL; |
d2e4a39e | 1672 | while (arity > 0) |
4c4b4cd2 PH |
1673 | { |
1674 | struct type *range_type = alloc_type (objf); | |
1675 | struct type *array_type = alloc_type (objf); | |
1676 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1677 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1678 | arity -= 1; | |
1679 | ||
df407dfe | 1680 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1681 | longest_to_int (value_as_long (low)), |
1682 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 PH |
1683 | elt_type = create_array_type (array_type, elt_type, range_type); |
1684 | } | |
14f9c5c9 AS |
1685 | |
1686 | return lookup_pointer_type (elt_type); | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1691 | Otherwise, returns either a standard GDB array with bounds set |
1692 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1693 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1694 | ||
d2e4a39e AS |
1695 | struct value * |
1696 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1697 | { |
df407dfe | 1698 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1699 | { |
d2e4a39e | 1700 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1701 | if (arrType == NULL) |
4c4b4cd2 | 1702 | return NULL; |
14f9c5c9 AS |
1703 | return value_cast (arrType, value_copy (desc_data (arr))); |
1704 | } | |
df407dfe | 1705 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 AS |
1706 | return decode_packed_array (arr); |
1707 | else | |
1708 | return arr; | |
1709 | } | |
1710 | ||
1711 | /* If ARR does not represent an array, returns ARR unchanged. | |
1712 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1713 | be ARR itself if it already is in the proper form). */ |
1714 | ||
1715 | static struct value * | |
d2e4a39e | 1716 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1717 | { |
df407dfe | 1718 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1719 | { |
d2e4a39e | 1720 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1721 | if (arrVal == NULL) |
323e0a4a | 1722 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1723 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1724 | return value_ind (arrVal); |
1725 | } | |
df407dfe | 1726 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 | 1727 | return decode_packed_array (arr); |
d2e4a39e | 1728 | else |
14f9c5c9 AS |
1729 | return arr; |
1730 | } | |
1731 | ||
1732 | /* If TYPE represents a GNAT array type, return it translated to an | |
1733 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1734 | packing). For other types, is the identity. */ |
1735 | ||
d2e4a39e AS |
1736 | struct type * |
1737 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1738 | { |
d2e4a39e AS |
1739 | struct value *mark = value_mark (); |
1740 | struct value *dummy = value_from_longest (builtin_type_long, 0); | |
1741 | struct type *result; | |
04624583 | 1742 | deprecated_set_value_type (dummy, type); |
14f9c5c9 | 1743 | result = ada_type_of_array (dummy, 0); |
4c4b4cd2 | 1744 | value_free_to_mark (mark); |
14f9c5c9 AS |
1745 | return result; |
1746 | } | |
1747 | ||
4c4b4cd2 PH |
1748 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1749 | ||
14f9c5c9 | 1750 | int |
d2e4a39e | 1751 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1752 | { |
1753 | if (type == NULL) | |
1754 | return 0; | |
4c4b4cd2 | 1755 | type = desc_base_type (type); |
61ee279c | 1756 | type = ada_check_typedef (type); |
d2e4a39e | 1757 | return |
14f9c5c9 AS |
1758 | ada_type_name (type) != NULL |
1759 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1760 | } | |
1761 | ||
1762 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1763 | in, and that the element size of its ultimate scalar constituents | |
1764 | (that is, either its elements, or, if it is an array of arrays, its | |
1765 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1766 | but with the bit sizes of its elements (and those of any | |
1767 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1768 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1769 | in bits. */ | |
1770 | ||
d2e4a39e AS |
1771 | static struct type * |
1772 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1773 | { |
d2e4a39e AS |
1774 | struct type *new_elt_type; |
1775 | struct type *new_type; | |
14f9c5c9 AS |
1776 | LONGEST low_bound, high_bound; |
1777 | ||
61ee279c | 1778 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1779 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1780 | return type; | |
1781 | ||
1782 | new_type = alloc_type (TYPE_OBJFILE (type)); | |
61ee279c | 1783 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1784 | elt_bits); |
14f9c5c9 AS |
1785 | create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); |
1786 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; | |
1787 | TYPE_NAME (new_type) = ada_type_name (type); | |
1788 | ||
d2e4a39e | 1789 | if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 | 1790 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1791 | low_bound = high_bound = 0; |
1792 | if (high_bound < low_bound) | |
1793 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1794 | else |
14f9c5c9 AS |
1795 | { |
1796 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1797 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1798 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1799 | } |
1800 | ||
4c4b4cd2 | 1801 | TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
1802 | return new_type; |
1803 | } | |
1804 | ||
4c4b4cd2 PH |
1805 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1806 | ||
d2e4a39e AS |
1807 | static struct type * |
1808 | decode_packed_array_type (struct type *type) | |
1809 | { | |
4c4b4cd2 | 1810 | struct symbol *sym; |
d2e4a39e | 1811 | struct block **blocks; |
61ee279c | 1812 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
d2e4a39e AS |
1813 | char *name = (char *) alloca (strlen (raw_name) + 1); |
1814 | char *tail = strstr (raw_name, "___XP"); | |
1815 | struct type *shadow_type; | |
14f9c5c9 AS |
1816 | long bits; |
1817 | int i, n; | |
1818 | ||
4c4b4cd2 PH |
1819 | type = desc_base_type (type); |
1820 | ||
14f9c5c9 AS |
1821 | memcpy (name, raw_name, tail - raw_name); |
1822 | name[tail - raw_name] = '\000'; | |
1823 | ||
4c4b4cd2 PH |
1824 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1825 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1826 | { |
323e0a4a | 1827 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
1828 | return NULL; |
1829 | } | |
4c4b4cd2 | 1830 | shadow_type = SYMBOL_TYPE (sym); |
14f9c5c9 AS |
1831 | |
1832 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1833 | { | |
323e0a4a | 1834 | lim_warning (_("could not understand bounds information on packed array")); |
14f9c5c9 AS |
1835 | return NULL; |
1836 | } | |
d2e4a39e | 1837 | |
14f9c5c9 AS |
1838 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1839 | { | |
4c4b4cd2 | 1840 | lim_warning |
323e0a4a | 1841 | (_("could not understand bit size information on packed array")); |
14f9c5c9 AS |
1842 | return NULL; |
1843 | } | |
d2e4a39e | 1844 | |
14f9c5c9 AS |
1845 | return packed_array_type (shadow_type, &bits); |
1846 | } | |
1847 | ||
4c4b4cd2 | 1848 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1849 | returns a simple array that denotes that array. Its type is a |
1850 | standard GDB array type except that the BITSIZEs of the array | |
1851 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1852 | type length is set appropriately. */ |
14f9c5c9 | 1853 | |
d2e4a39e AS |
1854 | static struct value * |
1855 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1856 | { |
4c4b4cd2 | 1857 | struct type *type; |
14f9c5c9 | 1858 | |
4c4b4cd2 | 1859 | arr = ada_coerce_ref (arr); |
df407dfe | 1860 | if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR) |
4c4b4cd2 PH |
1861 | arr = ada_value_ind (arr); |
1862 | ||
df407dfe | 1863 | type = decode_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
1864 | if (type == NULL) |
1865 | { | |
323e0a4a | 1866 | error (_("can't unpack array")); |
14f9c5c9 AS |
1867 | return NULL; |
1868 | } | |
61ee279c | 1869 | |
df407dfe | 1870 | if (BITS_BIG_ENDIAN && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
1871 | { |
1872 | /* This is a (right-justified) modular type representing a packed | |
1873 | array with no wrapper. In order to interpret the value through | |
1874 | the (left-justified) packed array type we just built, we must | |
1875 | first left-justify it. */ | |
1876 | int bit_size, bit_pos; | |
1877 | ULONGEST mod; | |
1878 | ||
df407dfe | 1879 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
1880 | bit_size = 0; |
1881 | while (mod > 0) | |
1882 | { | |
1883 | bit_size += 1; | |
1884 | mod >>= 1; | |
1885 | } | |
df407dfe | 1886 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
1887 | arr = ada_value_primitive_packed_val (arr, NULL, |
1888 | bit_pos / HOST_CHAR_BIT, | |
1889 | bit_pos % HOST_CHAR_BIT, | |
1890 | bit_size, | |
1891 | type); | |
1892 | } | |
1893 | ||
4c4b4cd2 | 1894 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1895 | } |
1896 | ||
1897 | ||
1898 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1899 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1900 | |
d2e4a39e AS |
1901 | static struct value * |
1902 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1903 | { |
1904 | int i; | |
1905 | int bits, elt_off, bit_off; | |
1906 | long elt_total_bit_offset; | |
d2e4a39e AS |
1907 | struct type *elt_type; |
1908 | struct value *v; | |
14f9c5c9 AS |
1909 | |
1910 | bits = 0; | |
1911 | elt_total_bit_offset = 0; | |
df407dfe | 1912 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1913 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1914 | { |
d2e4a39e | 1915 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1916 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1917 | error | |
323e0a4a | 1918 | (_("attempt to do packed indexing of something other than a packed array")); |
14f9c5c9 | 1919 | else |
4c4b4cd2 PH |
1920 | { |
1921 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1922 | LONGEST lowerbound, upperbound; | |
1923 | LONGEST idx; | |
1924 | ||
1925 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1926 | { | |
323e0a4a | 1927 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
1928 | lowerbound = upperbound = 0; |
1929 | } | |
1930 | ||
1931 | idx = value_as_long (value_pos_atr (ind[i])); | |
1932 | if (idx < lowerbound || idx > upperbound) | |
323e0a4a | 1933 | lim_warning (_("packed array index %ld out of bounds"), (long) idx); |
4c4b4cd2 PH |
1934 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
1935 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1936 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1937 | } |
14f9c5c9 AS |
1938 | } |
1939 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1940 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1941 | |
1942 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1943 | bits, elt_type); |
14f9c5c9 AS |
1944 | return v; |
1945 | } | |
1946 | ||
4c4b4cd2 | 1947 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1948 | |
1949 | static int | |
d2e4a39e | 1950 | has_negatives (struct type *type) |
14f9c5c9 | 1951 | { |
d2e4a39e AS |
1952 | switch (TYPE_CODE (type)) |
1953 | { | |
1954 | default: | |
1955 | return 0; | |
1956 | case TYPE_CODE_INT: | |
1957 | return !TYPE_UNSIGNED (type); | |
1958 | case TYPE_CODE_RANGE: | |
1959 | return TYPE_LOW_BOUND (type) < 0; | |
1960 | } | |
14f9c5c9 | 1961 | } |
d2e4a39e | 1962 | |
14f9c5c9 AS |
1963 | |
1964 | /* Create a new value of type TYPE from the contents of OBJ starting | |
1965 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
1966 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
1967 | assigning through the result will set the field fetched from. |
1968 | VALADDR is ignored unless OBJ is NULL, in which case, | |
1969 | VALADDR+OFFSET must address the start of storage containing the | |
1970 | packed value. The value returned in this case is never an lval. | |
1971 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 1972 | |
d2e4a39e | 1973 | struct value * |
fc1a4b47 | 1974 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 1975 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 1976 | struct type *type) |
14f9c5c9 | 1977 | { |
d2e4a39e | 1978 | struct value *v; |
4c4b4cd2 PH |
1979 | int src, /* Index into the source area */ |
1980 | targ, /* Index into the target area */ | |
1981 | srcBitsLeft, /* Number of source bits left to move */ | |
1982 | nsrc, ntarg, /* Number of source and target bytes */ | |
1983 | unusedLS, /* Number of bits in next significant | |
1984 | byte of source that are unused */ | |
1985 | accumSize; /* Number of meaningful bits in accum */ | |
1986 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 1987 | unsigned char *unpacked; |
4c4b4cd2 | 1988 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
1989 | unsigned char sign; |
1990 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
1991 | /* Transmit bytes from least to most significant; delta is the direction |
1992 | the indices move. */ | |
14f9c5c9 AS |
1993 | int delta = BITS_BIG_ENDIAN ? -1 : 1; |
1994 | ||
61ee279c | 1995 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1996 | |
1997 | if (obj == NULL) | |
1998 | { | |
1999 | v = allocate_value (type); | |
d2e4a39e | 2000 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 2001 | } |
d69fe07e | 2002 | else if (value_lazy (obj)) |
14f9c5c9 AS |
2003 | { |
2004 | v = value_at (type, | |
df407dfe | 2005 | VALUE_ADDRESS (obj) + value_offset (obj) + offset); |
d2e4a39e | 2006 | bytes = (unsigned char *) alloca (len); |
14f9c5c9 AS |
2007 | read_memory (VALUE_ADDRESS (v), bytes, len); |
2008 | } | |
d2e4a39e | 2009 | else |
14f9c5c9 AS |
2010 | { |
2011 | v = allocate_value (type); | |
0fd88904 | 2012 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 2013 | } |
d2e4a39e AS |
2014 | |
2015 | if (obj != NULL) | |
14f9c5c9 AS |
2016 | { |
2017 | VALUE_LVAL (v) = VALUE_LVAL (obj); | |
2018 | if (VALUE_LVAL (obj) == lval_internalvar) | |
4c4b4cd2 | 2019 | VALUE_LVAL (v) = lval_internalvar_component; |
df407dfe | 2020 | VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset; |
9bbda503 AC |
2021 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
2022 | set_value_bitsize (v, bit_size); | |
df407dfe | 2023 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2024 | { |
2025 | VALUE_ADDRESS (v) += 1; | |
9bbda503 | 2026 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 2027 | } |
14f9c5c9 AS |
2028 | } |
2029 | else | |
9bbda503 | 2030 | set_value_bitsize (v, bit_size); |
0fd88904 | 2031 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
2032 | |
2033 | srcBitsLeft = bit_size; | |
2034 | nsrc = len; | |
2035 | ntarg = TYPE_LENGTH (type); | |
2036 | sign = 0; | |
2037 | if (bit_size == 0) | |
2038 | { | |
2039 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2040 | return v; | |
2041 | } | |
2042 | else if (BITS_BIG_ENDIAN) | |
2043 | { | |
d2e4a39e | 2044 | src = len - 1; |
1265e4aa JB |
2045 | if (has_negatives (type) |
2046 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2047 | sign = ~0; |
d2e4a39e AS |
2048 | |
2049 | unusedLS = | |
4c4b4cd2 PH |
2050 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2051 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
2052 | |
2053 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
2054 | { |
2055 | case TYPE_CODE_ARRAY: | |
2056 | case TYPE_CODE_UNION: | |
2057 | case TYPE_CODE_STRUCT: | |
2058 | /* Non-scalar values must be aligned at a byte boundary... */ | |
2059 | accumSize = | |
2060 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2061 | /* ... And are placed at the beginning (most-significant) bytes | |
2062 | of the target. */ | |
529cad9c | 2063 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
4c4b4cd2 PH |
2064 | break; |
2065 | default: | |
2066 | accumSize = 0; | |
2067 | targ = TYPE_LENGTH (type) - 1; | |
2068 | break; | |
2069 | } | |
14f9c5c9 | 2070 | } |
d2e4a39e | 2071 | else |
14f9c5c9 AS |
2072 | { |
2073 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2074 | ||
2075 | src = targ = 0; | |
2076 | unusedLS = bit_offset; | |
2077 | accumSize = 0; | |
2078 | ||
d2e4a39e | 2079 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2080 | sign = ~0; |
14f9c5c9 | 2081 | } |
d2e4a39e | 2082 | |
14f9c5c9 AS |
2083 | accum = 0; |
2084 | while (nsrc > 0) | |
2085 | { | |
2086 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2087 | part of the value. */ |
d2e4a39e | 2088 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2089 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2090 | 1; | |
2091 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2092 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 2093 | accum |= |
4c4b4cd2 | 2094 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2095 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2096 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2097 | { |
2098 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2099 | accumSize -= HOST_CHAR_BIT; | |
2100 | accum >>= HOST_CHAR_BIT; | |
2101 | ntarg -= 1; | |
2102 | targ += delta; | |
2103 | } | |
14f9c5c9 AS |
2104 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2105 | unusedLS = 0; | |
2106 | nsrc -= 1; | |
2107 | src += delta; | |
2108 | } | |
2109 | while (ntarg > 0) | |
2110 | { | |
2111 | accum |= sign << accumSize; | |
2112 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2113 | accumSize -= HOST_CHAR_BIT; | |
2114 | accum >>= HOST_CHAR_BIT; | |
2115 | ntarg -= 1; | |
2116 | targ += delta; | |
2117 | } | |
2118 | ||
2119 | return v; | |
2120 | } | |
d2e4a39e | 2121 | |
14f9c5c9 AS |
2122 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2123 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2124 | not overlap. */ |
14f9c5c9 | 2125 | static void |
fc1a4b47 | 2126 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
0fd88904 | 2127 | int src_offset, int n) |
14f9c5c9 AS |
2128 | { |
2129 | unsigned int accum, mask; | |
2130 | int accum_bits, chunk_size; | |
2131 | ||
2132 | target += targ_offset / HOST_CHAR_BIT; | |
2133 | targ_offset %= HOST_CHAR_BIT; | |
2134 | source += src_offset / HOST_CHAR_BIT; | |
2135 | src_offset %= HOST_CHAR_BIT; | |
d2e4a39e | 2136 | if (BITS_BIG_ENDIAN) |
14f9c5c9 AS |
2137 | { |
2138 | accum = (unsigned char) *source; | |
2139 | source += 1; | |
2140 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2141 | ||
d2e4a39e | 2142 | while (n > 0) |
4c4b4cd2 PH |
2143 | { |
2144 | int unused_right; | |
2145 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
2146 | accum_bits += HOST_CHAR_BIT; | |
2147 | source += 1; | |
2148 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2149 | if (chunk_size > n) | |
2150 | chunk_size = n; | |
2151 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2152 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2153 | *target = | |
2154 | (*target & ~mask) | |
2155 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2156 | n -= chunk_size; | |
2157 | accum_bits -= chunk_size; | |
2158 | target += 1; | |
2159 | targ_offset = 0; | |
2160 | } | |
14f9c5c9 AS |
2161 | } |
2162 | else | |
2163 | { | |
2164 | accum = (unsigned char) *source >> src_offset; | |
2165 | source += 1; | |
2166 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2167 | ||
d2e4a39e | 2168 | while (n > 0) |
4c4b4cd2 PH |
2169 | { |
2170 | accum = accum + ((unsigned char) *source << accum_bits); | |
2171 | accum_bits += HOST_CHAR_BIT; | |
2172 | source += 1; | |
2173 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2174 | if (chunk_size > n) | |
2175 | chunk_size = n; | |
2176 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2177 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2178 | n -= chunk_size; | |
2179 | accum_bits -= chunk_size; | |
2180 | accum >>= chunk_size; | |
2181 | target += 1; | |
2182 | targ_offset = 0; | |
2183 | } | |
14f9c5c9 AS |
2184 | } |
2185 | } | |
2186 | ||
14f9c5c9 AS |
2187 | /* Store the contents of FROMVAL into the location of TOVAL. |
2188 | Return a new value with the location of TOVAL and contents of | |
2189 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2190 | floating-point or non-scalar types. */ |
14f9c5c9 | 2191 | |
d2e4a39e AS |
2192 | static struct value * |
2193 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2194 | { |
df407dfe AC |
2195 | struct type *type = value_type (toval); |
2196 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2197 | |
52ce6436 PH |
2198 | toval = ada_coerce_ref (toval); |
2199 | fromval = ada_coerce_ref (fromval); | |
2200 | ||
2201 | if (ada_is_direct_array_type (value_type (toval))) | |
2202 | toval = ada_coerce_to_simple_array (toval); | |
2203 | if (ada_is_direct_array_type (value_type (fromval))) | |
2204 | fromval = ada_coerce_to_simple_array (fromval); | |
2205 | ||
88e3b34b | 2206 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2207 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2208 | |
d2e4a39e | 2209 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2210 | && bits > 0 |
d2e4a39e | 2211 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2212 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2213 | { |
df407dfe AC |
2214 | int len = (value_bitpos (toval) |
2215 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
d2e4a39e AS |
2216 | char *buffer = (char *) alloca (len); |
2217 | struct value *val; | |
52ce6436 | 2218 | CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval); |
14f9c5c9 AS |
2219 | |
2220 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2221 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2222 | |
52ce6436 | 2223 | read_memory (to_addr, buffer, len); |
14f9c5c9 | 2224 | if (BITS_BIG_ENDIAN) |
df407dfe | 2225 | move_bits (buffer, value_bitpos (toval), |
0fd88904 | 2226 | value_contents (fromval), |
df407dfe | 2227 | TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT - |
4c4b4cd2 | 2228 | bits, bits); |
14f9c5c9 | 2229 | else |
0fd88904 | 2230 | move_bits (buffer, value_bitpos (toval), value_contents (fromval), |
4c4b4cd2 | 2231 | 0, bits); |
52ce6436 PH |
2232 | write_memory (to_addr, buffer, len); |
2233 | if (deprecated_memory_changed_hook) | |
2234 | deprecated_memory_changed_hook (to_addr, len); | |
2235 | ||
14f9c5c9 | 2236 | val = value_copy (toval); |
0fd88904 | 2237 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2238 | TYPE_LENGTH (type)); |
04624583 | 2239 | deprecated_set_value_type (val, type); |
d2e4a39e | 2240 | |
14f9c5c9 AS |
2241 | return val; |
2242 | } | |
2243 | ||
2244 | return value_assign (toval, fromval); | |
2245 | } | |
2246 | ||
2247 | ||
52ce6436 PH |
2248 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2249 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2250 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2251 | * COMPONENT, and not the inferior's memory. The current contents | |
2252 | * of COMPONENT are ignored. */ | |
2253 | static void | |
2254 | value_assign_to_component (struct value *container, struct value *component, | |
2255 | struct value *val) | |
2256 | { | |
2257 | LONGEST offset_in_container = | |
2258 | (LONGEST) (VALUE_ADDRESS (component) + value_offset (component) | |
2259 | - VALUE_ADDRESS (container) - value_offset (container)); | |
2260 | int bit_offset_in_container = | |
2261 | value_bitpos (component) - value_bitpos (container); | |
2262 | int bits; | |
2263 | ||
2264 | val = value_cast (value_type (component), val); | |
2265 | ||
2266 | if (value_bitsize (component) == 0) | |
2267 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2268 | else | |
2269 | bits = value_bitsize (component); | |
2270 | ||
2271 | if (BITS_BIG_ENDIAN) | |
2272 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2273 | value_bitpos (container) + bit_offset_in_container, | |
2274 | value_contents (val), | |
2275 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
2276 | bits); | |
2277 | else | |
2278 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2279 | value_bitpos (container) + bit_offset_in_container, | |
2280 | value_contents (val), 0, bits); | |
2281 | } | |
2282 | ||
4c4b4cd2 PH |
2283 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2284 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2285 | thereto. */ |
2286 | ||
d2e4a39e AS |
2287 | struct value * |
2288 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2289 | { |
2290 | int k; | |
d2e4a39e AS |
2291 | struct value *elt; |
2292 | struct type *elt_type; | |
14f9c5c9 AS |
2293 | |
2294 | elt = ada_coerce_to_simple_array (arr); | |
2295 | ||
df407dfe | 2296 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2297 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2298 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2299 | return value_subscript_packed (elt, arity, ind); | |
2300 | ||
2301 | for (k = 0; k < arity; k += 1) | |
2302 | { | |
2303 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2304 | error (_("too many subscripts (%d expected)"), k); |
14f9c5c9 AS |
2305 | elt = value_subscript (elt, value_pos_atr (ind[k])); |
2306 | } | |
2307 | return elt; | |
2308 | } | |
2309 | ||
2310 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2311 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2312 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2313 | |
d2e4a39e AS |
2314 | struct value * |
2315 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, | |
4c4b4cd2 | 2316 | struct value **ind) |
14f9c5c9 AS |
2317 | { |
2318 | int k; | |
2319 | ||
2320 | for (k = 0; k < arity; k += 1) | |
2321 | { | |
2322 | LONGEST lwb, upb; | |
d2e4a39e | 2323 | struct value *idx; |
14f9c5c9 AS |
2324 | |
2325 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2326 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2327 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2328 | value_copy (arr)); |
14f9c5c9 | 2329 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
4c4b4cd2 PH |
2330 | idx = value_pos_atr (ind[k]); |
2331 | if (lwb != 0) | |
2332 | idx = value_sub (idx, value_from_longest (builtin_type_int, lwb)); | |
14f9c5c9 AS |
2333 | arr = value_add (arr, idx); |
2334 | type = TYPE_TARGET_TYPE (type); | |
2335 | } | |
2336 | ||
2337 | return value_ind (arr); | |
2338 | } | |
2339 | ||
0b5d8877 PH |
2340 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
2341 | actual type of ARRAY_PTR is ignored), returns a reference to | |
2342 | the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower | |
2343 | bound of this array is LOW, as per Ada rules. */ | |
2344 | static struct value * | |
6c038f32 | 2345 | ada_value_slice_ptr (struct value *array_ptr, struct type *type, |
0b5d8877 PH |
2346 | int low, int high) |
2347 | { | |
6c038f32 | 2348 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2349 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2350 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2351 | struct type *index_type = |
2352 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2353 | low, high); |
6c038f32 | 2354 | struct type *slice_type = |
0b5d8877 PH |
2355 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
2356 | return value_from_pointer (lookup_reference_type (slice_type), base); | |
2357 | } | |
2358 | ||
2359 | ||
2360 | static struct value * | |
2361 | ada_value_slice (struct value *array, int low, int high) | |
2362 | { | |
df407dfe | 2363 | struct type *type = value_type (array); |
6c038f32 | 2364 | struct type *index_type = |
0b5d8877 | 2365 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2366 | struct type *slice_type = |
0b5d8877 | 2367 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2368 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2369 | } |
2370 | ||
14f9c5c9 AS |
2371 | /* If type is a record type in the form of a standard GNAT array |
2372 | descriptor, returns the number of dimensions for type. If arr is a | |
2373 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2374 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2375 | |
2376 | int | |
d2e4a39e | 2377 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2378 | { |
2379 | int arity; | |
2380 | ||
2381 | if (type == NULL) | |
2382 | return 0; | |
2383 | ||
2384 | type = desc_base_type (type); | |
2385 | ||
2386 | arity = 0; | |
d2e4a39e | 2387 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2388 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2389 | else |
2390 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2391 | { |
4c4b4cd2 | 2392 | arity += 1; |
61ee279c | 2393 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2394 | } |
d2e4a39e | 2395 | |
14f9c5c9 AS |
2396 | return arity; |
2397 | } | |
2398 | ||
2399 | /* If TYPE is a record type in the form of a standard GNAT array | |
2400 | descriptor or a simple array type, returns the element type for | |
2401 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2402 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2403 | |
d2e4a39e AS |
2404 | struct type * |
2405 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2406 | { |
2407 | type = desc_base_type (type); | |
2408 | ||
d2e4a39e | 2409 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2410 | { |
2411 | int k; | |
d2e4a39e | 2412 | struct type *p_array_type; |
14f9c5c9 AS |
2413 | |
2414 | p_array_type = desc_data_type (type); | |
2415 | ||
2416 | k = ada_array_arity (type); | |
2417 | if (k == 0) | |
4c4b4cd2 | 2418 | return NULL; |
d2e4a39e | 2419 | |
4c4b4cd2 | 2420 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2421 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2422 | k = nindices; |
14f9c5c9 | 2423 | p_array_type = TYPE_TARGET_TYPE (p_array_type); |
d2e4a39e | 2424 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2425 | { |
61ee279c | 2426 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2427 | k -= 1; |
2428 | } | |
14f9c5c9 AS |
2429 | return p_array_type; |
2430 | } | |
2431 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2432 | { | |
2433 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2434 | { |
2435 | type = TYPE_TARGET_TYPE (type); | |
2436 | nindices -= 1; | |
2437 | } | |
14f9c5c9 AS |
2438 | return type; |
2439 | } | |
2440 | ||
2441 | return NULL; | |
2442 | } | |
2443 | ||
4c4b4cd2 PH |
2444 | /* The type of nth index in arrays of given type (n numbering from 1). |
2445 | Does not examine memory. */ | |
14f9c5c9 | 2446 | |
d2e4a39e AS |
2447 | struct type * |
2448 | ada_index_type (struct type *type, int n) | |
14f9c5c9 | 2449 | { |
4c4b4cd2 PH |
2450 | struct type *result_type; |
2451 | ||
14f9c5c9 AS |
2452 | type = desc_base_type (type); |
2453 | ||
2454 | if (n > ada_array_arity (type)) | |
2455 | return NULL; | |
2456 | ||
4c4b4cd2 | 2457 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2458 | { |
2459 | int i; | |
2460 | ||
2461 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 PH |
2462 | type = TYPE_TARGET_TYPE (type); |
2463 | result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); | |
2464 | /* FIXME: The stabs type r(0,0);bound;bound in an array type | |
2465 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 JB |
2466 | perhaps stabsread.c would make more sense. */ |
2467 | if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) | |
2468 | result_type = builtin_type_int; | |
14f9c5c9 | 2469 | |
4c4b4cd2 | 2470 | return result_type; |
14f9c5c9 | 2471 | } |
d2e4a39e | 2472 | else |
14f9c5c9 AS |
2473 | return desc_index_type (desc_bounds_type (type), n); |
2474 | } | |
2475 | ||
2476 | /* Given that arr is an array type, returns the lower bound of the | |
2477 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 PH |
2478 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
2479 | array-descriptor type. If TYPEP is non-null, *TYPEP is set to the | |
2480 | bounds type. It works for other arrays with bounds supplied by | |
2481 | run-time quantities other than discriminants. */ | |
14f9c5c9 AS |
2482 | |
2483 | LONGEST | |
d2e4a39e | 2484 | ada_array_bound_from_type (struct type * arr_type, int n, int which, |
4c4b4cd2 | 2485 | struct type ** typep) |
14f9c5c9 | 2486 | { |
d2e4a39e AS |
2487 | struct type *type; |
2488 | struct type *index_type_desc; | |
14f9c5c9 AS |
2489 | |
2490 | if (ada_is_packed_array_type (arr_type)) | |
2491 | arr_type = decode_packed_array_type (arr_type); | |
2492 | ||
4c4b4cd2 | 2493 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
14f9c5c9 AS |
2494 | { |
2495 | if (typep != NULL) | |
4c4b4cd2 | 2496 | *typep = builtin_type_int; |
d2e4a39e | 2497 | return (LONGEST) - which; |
14f9c5c9 AS |
2498 | } |
2499 | ||
2500 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2501 | type = TYPE_TARGET_TYPE (arr_type); | |
2502 | else | |
2503 | type = arr_type; | |
2504 | ||
2505 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
d2e4a39e | 2506 | if (index_type_desc == NULL) |
14f9c5c9 | 2507 | { |
d2e4a39e AS |
2508 | struct type *range_type; |
2509 | struct type *index_type; | |
14f9c5c9 | 2510 | |
d2e4a39e | 2511 | while (n > 1) |
4c4b4cd2 PH |
2512 | { |
2513 | type = TYPE_TARGET_TYPE (type); | |
2514 | n -= 1; | |
2515 | } | |
14f9c5c9 AS |
2516 | |
2517 | range_type = TYPE_INDEX_TYPE (type); | |
2518 | index_type = TYPE_TARGET_TYPE (range_type); | |
2519 | if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF) | |
4c4b4cd2 | 2520 | index_type = builtin_type_long; |
14f9c5c9 | 2521 | if (typep != NULL) |
4c4b4cd2 | 2522 | *typep = index_type; |
d2e4a39e | 2523 | return |
4c4b4cd2 PH |
2524 | (LONGEST) (which == 0 |
2525 | ? TYPE_LOW_BOUND (range_type) | |
2526 | : TYPE_HIGH_BOUND (range_type)); | |
14f9c5c9 | 2527 | } |
d2e4a39e | 2528 | else |
14f9c5c9 | 2529 | { |
d2e4a39e | 2530 | struct type *index_type = |
4c4b4cd2 PH |
2531 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), |
2532 | NULL, TYPE_OBJFILE (arr_type)); | |
14f9c5c9 | 2533 | if (typep != NULL) |
4c4b4cd2 | 2534 | *typep = TYPE_TARGET_TYPE (index_type); |
d2e4a39e | 2535 | return |
4c4b4cd2 PH |
2536 | (LONGEST) (which == 0 |
2537 | ? TYPE_LOW_BOUND (index_type) | |
2538 | : TYPE_HIGH_BOUND (index_type)); | |
14f9c5c9 AS |
2539 | } |
2540 | } | |
2541 | ||
2542 | /* Given that arr is an array value, returns the lower bound of the | |
2543 | nth index (numbering from 1) if which is 0, and the upper bound if | |
4c4b4cd2 PH |
2544 | which is 1. This routine will also work for arrays with bounds |
2545 | supplied by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2546 | |
d2e4a39e | 2547 | struct value * |
4dc81987 | 2548 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2549 | { |
df407dfe | 2550 | struct type *arr_type = value_type (arr); |
14f9c5c9 AS |
2551 | |
2552 | if (ada_is_packed_array_type (arr_type)) | |
2553 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2554 | else if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2555 | { |
d2e4a39e | 2556 | struct type *type; |
14f9c5c9 AS |
2557 | LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); |
2558 | return value_from_longest (type, v); | |
2559 | } | |
2560 | else | |
2561 | return desc_one_bound (desc_bounds (arr), n, which); | |
2562 | } | |
2563 | ||
2564 | /* Given that arr is an array value, returns the length of the | |
2565 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2566 | supplied by run-time quantities other than discriminants. |
2567 | Does not work for arrays indexed by enumeration types with representation | |
2568 | clauses at the moment. */ | |
14f9c5c9 | 2569 | |
d2e4a39e AS |
2570 | struct value * |
2571 | ada_array_length (struct value *arr, int n) | |
14f9c5c9 | 2572 | { |
df407dfe | 2573 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2574 | |
2575 | if (ada_is_packed_array_type (arr_type)) | |
2576 | return ada_array_length (decode_packed_array (arr), n); | |
2577 | ||
4c4b4cd2 | 2578 | if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2579 | { |
d2e4a39e | 2580 | struct type *type; |
14f9c5c9 | 2581 | LONGEST v = |
4c4b4cd2 PH |
2582 | ada_array_bound_from_type (arr_type, n, 1, &type) - |
2583 | ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; | |
14f9c5c9 AS |
2584 | return value_from_longest (type, v); |
2585 | } | |
2586 | else | |
d2e4a39e | 2587 | return |
72d5681a | 2588 | value_from_longest (builtin_type_int, |
4c4b4cd2 PH |
2589 | value_as_long (desc_one_bound (desc_bounds (arr), |
2590 | n, 1)) | |
2591 | - value_as_long (desc_one_bound (desc_bounds (arr), | |
2592 | n, 0)) + 1); | |
2593 | } | |
2594 | ||
2595 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2596 | with bounds LOW to LOW-1. */ | |
2597 | ||
2598 | static struct value * | |
2599 | empty_array (struct type *arr_type, int low) | |
2600 | { | |
6c038f32 | 2601 | struct type *index_type = |
0b5d8877 PH |
2602 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2603 | low, low - 1); | |
2604 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2605 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2606 | } |
14f9c5c9 | 2607 | \f |
d2e4a39e | 2608 | |
4c4b4cd2 | 2609 | /* Name resolution */ |
14f9c5c9 | 2610 | |
4c4b4cd2 PH |
2611 | /* The "decoded" name for the user-definable Ada operator corresponding |
2612 | to OP. */ | |
14f9c5c9 | 2613 | |
d2e4a39e | 2614 | static const char * |
4c4b4cd2 | 2615 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2616 | { |
2617 | int i; | |
2618 | ||
4c4b4cd2 | 2619 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2620 | { |
2621 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2622 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2623 | } |
323e0a4a | 2624 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2625 | } |
2626 | ||
2627 | ||
4c4b4cd2 PH |
2628 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2629 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2630 | undefined namespace) and converts operators that are | |
2631 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2632 | non-null, it provides a preferred result type [at the moment, only |
2633 | type void has any effect---causing procedures to be preferred over | |
2634 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2635 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2636 | |
4c4b4cd2 PH |
2637 | static void |
2638 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 AS |
2639 | { |
2640 | int pc; | |
2641 | pc = 0; | |
4c4b4cd2 | 2642 | resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); |
14f9c5c9 AS |
2643 | } |
2644 | ||
4c4b4cd2 PH |
2645 | /* Resolve the operator of the subexpression beginning at |
2646 | position *POS of *EXPP. "Resolving" consists of replacing | |
2647 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2648 | with their resolutions, replacing built-in operators with | |
2649 | function calls to user-defined operators, where appropriate, and, | |
2650 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2651 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2652 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2653 | |
d2e4a39e | 2654 | static struct value * |
4c4b4cd2 | 2655 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2656 | struct type *context_type) |
14f9c5c9 AS |
2657 | { |
2658 | int pc = *pos; | |
2659 | int i; | |
4c4b4cd2 | 2660 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2661 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2662 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2663 | int nargs; /* Number of operands. */ | |
52ce6436 | 2664 | int oplen; |
14f9c5c9 AS |
2665 | |
2666 | argvec = NULL; | |
2667 | nargs = 0; | |
2668 | exp = *expp; | |
2669 | ||
52ce6436 PH |
2670 | /* Pass one: resolve operands, saving their types and updating *pos, |
2671 | if needed. */ | |
14f9c5c9 AS |
2672 | switch (op) |
2673 | { | |
4c4b4cd2 PH |
2674 | case OP_FUNCALL: |
2675 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2676 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2677 | *pos += 7; | |
4c4b4cd2 PH |
2678 | else |
2679 | { | |
2680 | *pos += 3; | |
2681 | resolve_subexp (expp, pos, 0, NULL); | |
2682 | } | |
2683 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2684 | break; |
2685 | ||
14f9c5c9 | 2686 | case UNOP_ADDR: |
4c4b4cd2 PH |
2687 | *pos += 1; |
2688 | resolve_subexp (expp, pos, 0, NULL); | |
2689 | break; | |
2690 | ||
52ce6436 PH |
2691 | case UNOP_QUAL: |
2692 | *pos += 3; | |
2693 | resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); | |
4c4b4cd2 PH |
2694 | break; |
2695 | ||
52ce6436 | 2696 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2697 | case OP_ATR_SIZE: |
2698 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2699 | case OP_ATR_FIRST: |
2700 | case OP_ATR_LAST: | |
2701 | case OP_ATR_LENGTH: | |
2702 | case OP_ATR_POS: | |
2703 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2704 | case OP_ATR_MIN: |
2705 | case OP_ATR_MAX: | |
52ce6436 PH |
2706 | case TERNOP_IN_RANGE: |
2707 | case BINOP_IN_BOUNDS: | |
2708 | case UNOP_IN_RANGE: | |
2709 | case OP_AGGREGATE: | |
2710 | case OP_OTHERS: | |
2711 | case OP_CHOICES: | |
2712 | case OP_POSITIONAL: | |
2713 | case OP_DISCRETE_RANGE: | |
2714 | case OP_NAME: | |
2715 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2716 | *pos += oplen; | |
14f9c5c9 AS |
2717 | break; |
2718 | ||
2719 | case BINOP_ASSIGN: | |
2720 | { | |
4c4b4cd2 PH |
2721 | struct value *arg1; |
2722 | ||
2723 | *pos += 1; | |
2724 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2725 | if (arg1 == NULL) | |
2726 | resolve_subexp (expp, pos, 1, NULL); | |
2727 | else | |
df407dfe | 2728 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 2729 | break; |
14f9c5c9 AS |
2730 | } |
2731 | ||
4c4b4cd2 | 2732 | case UNOP_CAST: |
4c4b4cd2 PH |
2733 | *pos += 3; |
2734 | nargs = 1; | |
2735 | break; | |
14f9c5c9 | 2736 | |
4c4b4cd2 PH |
2737 | case BINOP_ADD: |
2738 | case BINOP_SUB: | |
2739 | case BINOP_MUL: | |
2740 | case BINOP_DIV: | |
2741 | case BINOP_REM: | |
2742 | case BINOP_MOD: | |
2743 | case BINOP_EXP: | |
2744 | case BINOP_CONCAT: | |
2745 | case BINOP_LOGICAL_AND: | |
2746 | case BINOP_LOGICAL_OR: | |
2747 | case BINOP_BITWISE_AND: | |
2748 | case BINOP_BITWISE_IOR: | |
2749 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2750 | |
4c4b4cd2 PH |
2751 | case BINOP_EQUAL: |
2752 | case BINOP_NOTEQUAL: | |
2753 | case BINOP_LESS: | |
2754 | case BINOP_GTR: | |
2755 | case BINOP_LEQ: | |
2756 | case BINOP_GEQ: | |
14f9c5c9 | 2757 | |
4c4b4cd2 PH |
2758 | case BINOP_REPEAT: |
2759 | case BINOP_SUBSCRIPT: | |
2760 | case BINOP_COMMA: | |
40c8aaa9 JB |
2761 | *pos += 1; |
2762 | nargs = 2; | |
2763 | break; | |
14f9c5c9 | 2764 | |
4c4b4cd2 PH |
2765 | case UNOP_NEG: |
2766 | case UNOP_PLUS: | |
2767 | case UNOP_LOGICAL_NOT: | |
2768 | case UNOP_ABS: | |
2769 | case UNOP_IND: | |
2770 | *pos += 1; | |
2771 | nargs = 1; | |
2772 | break; | |
14f9c5c9 | 2773 | |
4c4b4cd2 PH |
2774 | case OP_LONG: |
2775 | case OP_DOUBLE: | |
2776 | case OP_VAR_VALUE: | |
2777 | *pos += 4; | |
2778 | break; | |
14f9c5c9 | 2779 | |
4c4b4cd2 PH |
2780 | case OP_TYPE: |
2781 | case OP_BOOL: | |
2782 | case OP_LAST: | |
4c4b4cd2 PH |
2783 | case OP_INTERNALVAR: |
2784 | *pos += 3; | |
2785 | break; | |
14f9c5c9 | 2786 | |
4c4b4cd2 PH |
2787 | case UNOP_MEMVAL: |
2788 | *pos += 3; | |
2789 | nargs = 1; | |
2790 | break; | |
2791 | ||
67f3407f DJ |
2792 | case OP_REGISTER: |
2793 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2794 | break; | |
2795 | ||
4c4b4cd2 PH |
2796 | case STRUCTOP_STRUCT: |
2797 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2798 | nargs = 1; | |
2799 | break; | |
2800 | ||
4c4b4cd2 | 2801 | case TERNOP_SLICE: |
4c4b4cd2 PH |
2802 | *pos += 1; |
2803 | nargs = 3; | |
2804 | break; | |
2805 | ||
52ce6436 | 2806 | case OP_STRING: |
14f9c5c9 | 2807 | break; |
4c4b4cd2 PH |
2808 | |
2809 | default: | |
323e0a4a | 2810 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
2811 | } |
2812 | ||
76a01679 | 2813 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2814 | for (i = 0; i < nargs; i += 1) |
2815 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2816 | argvec[i] = NULL; | |
2817 | exp = *expp; | |
2818 | ||
2819 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2820 | switch (op) |
2821 | { | |
2822 | default: | |
2823 | break; | |
2824 | ||
14f9c5c9 | 2825 | case OP_VAR_VALUE: |
4c4b4cd2 | 2826 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2827 | { |
2828 | struct ada_symbol_info *candidates; | |
2829 | int n_candidates; | |
2830 | ||
2831 | n_candidates = | |
2832 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2833 | (exp->elts[pc + 2].symbol), | |
2834 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2835 | &candidates); | |
2836 | ||
2837 | if (n_candidates > 1) | |
2838 | { | |
2839 | /* Types tend to get re-introduced locally, so if there | |
2840 | are any local symbols that are not types, first filter | |
2841 | out all types. */ | |
2842 | int j; | |
2843 | for (j = 0; j < n_candidates; j += 1) | |
2844 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2845 | { | |
2846 | case LOC_REGISTER: | |
2847 | case LOC_ARG: | |
2848 | case LOC_REF_ARG: | |
2849 | case LOC_REGPARM: | |
2850 | case LOC_REGPARM_ADDR: | |
2851 | case LOC_LOCAL: | |
2852 | case LOC_LOCAL_ARG: | |
2853 | case LOC_BASEREG: | |
2854 | case LOC_BASEREG_ARG: | |
2855 | case LOC_COMPUTED: | |
2856 | case LOC_COMPUTED_ARG: | |
2857 | goto FoundNonType; | |
2858 | default: | |
2859 | break; | |
2860 | } | |
2861 | FoundNonType: | |
2862 | if (j < n_candidates) | |
2863 | { | |
2864 | j = 0; | |
2865 | while (j < n_candidates) | |
2866 | { | |
2867 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2868 | { | |
2869 | candidates[j] = candidates[n_candidates - 1]; | |
2870 | n_candidates -= 1; | |
2871 | } | |
2872 | else | |
2873 | j += 1; | |
2874 | } | |
2875 | } | |
2876 | } | |
2877 | ||
2878 | if (n_candidates == 0) | |
323e0a4a | 2879 | error (_("No definition found for %s"), |
76a01679 JB |
2880 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2881 | else if (n_candidates == 1) | |
2882 | i = 0; | |
2883 | else if (deprocedure_p | |
2884 | && !is_nonfunction (candidates, n_candidates)) | |
2885 | { | |
06d5cf63 JB |
2886 | i = ada_resolve_function |
2887 | (candidates, n_candidates, NULL, 0, | |
2888 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2889 | context_type); | |
76a01679 | 2890 | if (i < 0) |
323e0a4a | 2891 | error (_("Could not find a match for %s"), |
76a01679 JB |
2892 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2893 | } | |
2894 | else | |
2895 | { | |
323e0a4a | 2896 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
2897 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2898 | user_select_syms (candidates, n_candidates, 1); | |
2899 | i = 0; | |
2900 | } | |
2901 | ||
2902 | exp->elts[pc + 1].block = candidates[i].block; | |
2903 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2904 | if (innermost_block == NULL |
2905 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2906 | innermost_block = candidates[i].block; |
2907 | } | |
2908 | ||
2909 | if (deprocedure_p | |
2910 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2911 | == TYPE_CODE_FUNC)) | |
2912 | { | |
2913 | replace_operator_with_call (expp, pc, 0, 0, | |
2914 | exp->elts[pc + 2].symbol, | |
2915 | exp->elts[pc + 1].block); | |
2916 | exp = *expp; | |
2917 | } | |
14f9c5c9 AS |
2918 | break; |
2919 | ||
2920 | case OP_FUNCALL: | |
2921 | { | |
4c4b4cd2 | 2922 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2923 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2924 | { |
2925 | struct ada_symbol_info *candidates; | |
2926 | int n_candidates; | |
2927 | ||
2928 | n_candidates = | |
76a01679 JB |
2929 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2930 | (exp->elts[pc + 5].symbol), | |
2931 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2932 | &candidates); | |
4c4b4cd2 PH |
2933 | if (n_candidates == 1) |
2934 | i = 0; | |
2935 | else | |
2936 | { | |
06d5cf63 JB |
2937 | i = ada_resolve_function |
2938 | (candidates, n_candidates, | |
2939 | argvec, nargs, | |
2940 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2941 | context_type); | |
4c4b4cd2 | 2942 | if (i < 0) |
323e0a4a | 2943 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
2944 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
2945 | } | |
2946 | ||
2947 | exp->elts[pc + 4].block = candidates[i].block; | |
2948 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2949 | if (innermost_block == NULL |
2950 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2951 | innermost_block = candidates[i].block; |
2952 | } | |
14f9c5c9 AS |
2953 | } |
2954 | break; | |
2955 | case BINOP_ADD: | |
2956 | case BINOP_SUB: | |
2957 | case BINOP_MUL: | |
2958 | case BINOP_DIV: | |
2959 | case BINOP_REM: | |
2960 | case BINOP_MOD: | |
2961 | case BINOP_CONCAT: | |
2962 | case BINOP_BITWISE_AND: | |
2963 | case BINOP_BITWISE_IOR: | |
2964 | case BINOP_BITWISE_XOR: | |
2965 | case BINOP_EQUAL: | |
2966 | case BINOP_NOTEQUAL: | |
2967 | case BINOP_LESS: | |
2968 | case BINOP_GTR: | |
2969 | case BINOP_LEQ: | |
2970 | case BINOP_GEQ: | |
2971 | case BINOP_EXP: | |
2972 | case UNOP_NEG: | |
2973 | case UNOP_PLUS: | |
2974 | case UNOP_LOGICAL_NOT: | |
2975 | case UNOP_ABS: | |
2976 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
2977 | { |
2978 | struct ada_symbol_info *candidates; | |
2979 | int n_candidates; | |
2980 | ||
2981 | n_candidates = | |
2982 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
2983 | (struct block *) NULL, VAR_DOMAIN, | |
2984 | &candidates); | |
2985 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 2986 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
2987 | if (i < 0) |
2988 | break; | |
2989 | ||
76a01679 JB |
2990 | replace_operator_with_call (expp, pc, nargs, 1, |
2991 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
2992 | exp = *expp; |
2993 | } | |
14f9c5c9 | 2994 | break; |
4c4b4cd2 PH |
2995 | |
2996 | case OP_TYPE: | |
2997 | return NULL; | |
14f9c5c9 AS |
2998 | } |
2999 | ||
3000 | *pos = pc; | |
3001 | return evaluate_subexp_type (exp, pos); | |
3002 | } | |
3003 | ||
3004 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
3005 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
3006 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
3007 | by convention matches anything. */ | |
14f9c5c9 | 3008 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 3009 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
3010 | |
3011 | static int | |
4dc81987 | 3012 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3013 | { |
61ee279c PH |
3014 | ftype = ada_check_typedef (ftype); |
3015 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3016 | |
3017 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3018 | ftype = TYPE_TARGET_TYPE (ftype); | |
3019 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3020 | atype = TYPE_TARGET_TYPE (atype); | |
3021 | ||
d2e4a39e | 3022 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
3023 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
3024 | return 1; | |
3025 | ||
d2e4a39e | 3026 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3027 | { |
3028 | default: | |
3029 | return 1; | |
3030 | case TYPE_CODE_PTR: | |
3031 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3032 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3033 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3034 | else |
1265e4aa JB |
3035 | return (may_deref |
3036 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3037 | case TYPE_CODE_INT: |
3038 | case TYPE_CODE_ENUM: | |
3039 | case TYPE_CODE_RANGE: | |
3040 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3041 | { |
3042 | case TYPE_CODE_INT: | |
3043 | case TYPE_CODE_ENUM: | |
3044 | case TYPE_CODE_RANGE: | |
3045 | return 1; | |
3046 | default: | |
3047 | return 0; | |
3048 | } | |
14f9c5c9 AS |
3049 | |
3050 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3051 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3052 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3053 | |
3054 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3055 | if (ada_is_array_descriptor_type (ftype)) |
3056 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3057 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3058 | else |
4c4b4cd2 PH |
3059 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3060 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3061 | |
3062 | case TYPE_CODE_UNION: | |
3063 | case TYPE_CODE_FLT: | |
3064 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3065 | } | |
3066 | } | |
3067 | ||
3068 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3069 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3070 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3071 | argument function. */ |
14f9c5c9 AS |
3072 | |
3073 | static int | |
d2e4a39e | 3074 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3075 | { |
3076 | int i; | |
d2e4a39e | 3077 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3078 | |
1265e4aa JB |
3079 | if (SYMBOL_CLASS (func) == LOC_CONST |
3080 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3081 | return (n_actuals == 0); |
3082 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3083 | return 0; | |
3084 | ||
3085 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3086 | return 0; | |
3087 | ||
3088 | for (i = 0; i < n_actuals; i += 1) | |
3089 | { | |
4c4b4cd2 | 3090 | if (actuals[i] == NULL) |
76a01679 JB |
3091 | return 0; |
3092 | else | |
3093 | { | |
61ee279c | 3094 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
df407dfe | 3095 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3096 | |
76a01679 JB |
3097 | if (!ada_type_match (ftype, atype, 1)) |
3098 | return 0; | |
3099 | } | |
14f9c5c9 AS |
3100 | } |
3101 | return 1; | |
3102 | } | |
3103 | ||
3104 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3105 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3106 | FUNC_TYPE is not a valid function type with a non-null return type | |
3107 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3108 | ||
3109 | static int | |
d2e4a39e | 3110 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3111 | { |
d2e4a39e | 3112 | struct type *return_type; |
14f9c5c9 AS |
3113 | |
3114 | if (func_type == NULL) | |
3115 | return 1; | |
3116 | ||
4c4b4cd2 PH |
3117 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
3118 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
3119 | else | |
3120 | return_type = base_type (func_type); | |
14f9c5c9 AS |
3121 | if (return_type == NULL) |
3122 | return 1; | |
3123 | ||
4c4b4cd2 | 3124 | context_type = base_type (context_type); |
14f9c5c9 AS |
3125 | |
3126 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3127 | return context_type == NULL || return_type == context_type; | |
3128 | else if (context_type == NULL) | |
3129 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3130 | else | |
3131 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3132 | } | |
3133 | ||
3134 | ||
4c4b4cd2 | 3135 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3136 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3137 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3138 | that returns that type, then eliminate matches that don't. If | |
3139 | CONTEXT_TYPE is void and there is at least one match that does not | |
3140 | return void, eliminate all matches that do. | |
3141 | ||
14f9c5c9 AS |
3142 | Asks the user if there is more than one match remaining. Returns -1 |
3143 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3144 | solely for messages. May re-arrange and modify SYMS in |
3145 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3146 | |
4c4b4cd2 PH |
3147 | static int |
3148 | ada_resolve_function (struct ada_symbol_info syms[], | |
3149 | int nsyms, struct value **args, int nargs, | |
3150 | const char *name, struct type *context_type) | |
14f9c5c9 AS |
3151 | { |
3152 | int k; | |
4c4b4cd2 | 3153 | int m; /* Number of hits */ |
d2e4a39e AS |
3154 | struct type *fallback; |
3155 | struct type *return_type; | |
14f9c5c9 AS |
3156 | |
3157 | return_type = context_type; | |
3158 | if (context_type == NULL) | |
3159 | fallback = builtin_type_void; | |
3160 | else | |
3161 | fallback = NULL; | |
3162 | ||
d2e4a39e | 3163 | m = 0; |
14f9c5c9 AS |
3164 | while (1) |
3165 | { | |
3166 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3167 | { |
61ee279c | 3168 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3169 | |
3170 | if (ada_args_match (syms[k].sym, args, nargs) | |
3171 | && return_match (type, return_type)) | |
3172 | { | |
3173 | syms[m] = syms[k]; | |
3174 | m += 1; | |
3175 | } | |
3176 | } | |
14f9c5c9 | 3177 | if (m > 0 || return_type == fallback) |
4c4b4cd2 | 3178 | break; |
14f9c5c9 | 3179 | else |
4c4b4cd2 | 3180 | return_type = fallback; |
14f9c5c9 AS |
3181 | } |
3182 | ||
3183 | if (m == 0) | |
3184 | return -1; | |
3185 | else if (m > 1) | |
3186 | { | |
323e0a4a | 3187 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3188 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3189 | return 0; |
3190 | } | |
3191 | return 0; | |
3192 | } | |
3193 | ||
4c4b4cd2 PH |
3194 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3195 | in a listing of choices during disambiguation (see sort_choices, below). | |
3196 | The idea is that overloadings of a subprogram name from the | |
3197 | same package should sort in their source order. We settle for ordering | |
3198 | such symbols by their trailing number (__N or $N). */ | |
3199 | ||
14f9c5c9 | 3200 | static int |
4c4b4cd2 | 3201 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
3202 | { |
3203 | if (N1 == NULL) | |
3204 | return 0; | |
3205 | else if (N0 == NULL) | |
3206 | return 1; | |
3207 | else | |
3208 | { | |
3209 | int k0, k1; | |
d2e4a39e | 3210 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3211 | ; |
d2e4a39e | 3212 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3213 | ; |
d2e4a39e | 3214 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3215 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3216 | { | |
3217 | int n0, n1; | |
3218 | n0 = k0; | |
3219 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3220 | n0 -= 1; | |
3221 | n1 = k1; | |
3222 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3223 | n1 -= 1; | |
3224 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3225 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3226 | } | |
14f9c5c9 AS |
3227 | return (strcmp (N0, N1) < 0); |
3228 | } | |
3229 | } | |
d2e4a39e | 3230 | |
4c4b4cd2 PH |
3231 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3232 | encoded names. */ | |
3233 | ||
d2e4a39e | 3234 | static void |
4c4b4cd2 | 3235 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3236 | { |
4c4b4cd2 | 3237 | int i; |
d2e4a39e | 3238 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3239 | { |
4c4b4cd2 | 3240 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3241 | int j; |
3242 | ||
d2e4a39e | 3243 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3244 | { |
3245 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3246 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3247 | break; | |
3248 | syms[j + 1] = syms[j]; | |
3249 | } | |
d2e4a39e | 3250 | syms[j + 1] = sym; |
14f9c5c9 AS |
3251 | } |
3252 | } | |
3253 | ||
4c4b4cd2 PH |
3254 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3255 | by asking the user (if necessary), returning the number selected, | |
3256 | and setting the first elements of SYMS items. Error if no symbols | |
3257 | selected. */ | |
14f9c5c9 AS |
3258 | |
3259 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3260 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3261 | |
3262 | int | |
4c4b4cd2 | 3263 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3264 | { |
3265 | int i; | |
d2e4a39e | 3266 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3267 | int n_chosen; |
3268 | int first_choice = (max_results == 1) ? 1 : 2; | |
3269 | ||
3270 | if (max_results < 1) | |
323e0a4a | 3271 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3272 | if (nsyms <= 1) |
3273 | return nsyms; | |
3274 | ||
323e0a4a | 3275 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3276 | if (max_results > 1) |
323e0a4a | 3277 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3278 | |
4c4b4cd2 | 3279 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3280 | |
3281 | for (i = 0; i < nsyms; i += 1) | |
3282 | { | |
4c4b4cd2 PH |
3283 | if (syms[i].sym == NULL) |
3284 | continue; | |
3285 | ||
3286 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3287 | { | |
76a01679 JB |
3288 | struct symtab_and_line sal = |
3289 | find_function_start_sal (syms[i].sym, 1); | |
323e0a4a AC |
3290 | if (sal.symtab == NULL) |
3291 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3292 | i + first_choice, | |
3293 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3294 | sal.line); | |
3295 | else | |
3296 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3297 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3298 | sal.symtab->filename, sal.line); | |
4c4b4cd2 PH |
3299 | continue; |
3300 | } | |
d2e4a39e | 3301 | else |
4c4b4cd2 PH |
3302 | { |
3303 | int is_enumeral = | |
3304 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3305 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3306 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
3307 | struct symtab *symtab = symtab_for_sym (syms[i].sym); | |
3308 | ||
3309 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3310 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3311 | i + first_choice, |
3312 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3313 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3314 | else if (is_enumeral |
3315 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3316 | { |
a3f17187 | 3317 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 JB |
3318 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3319 | gdb_stdout, -1, 0); | |
323e0a4a | 3320 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3321 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3322 | } | |
3323 | else if (symtab != NULL) | |
3324 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3325 | ? _("[%d] %s in %s (enumeral)\n") |
3326 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3327 | i + first_choice, |
3328 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3329 | symtab->filename); | |
3330 | else | |
3331 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3332 | ? _("[%d] %s (enumeral)\n") |
3333 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3334 | i + first_choice, |
3335 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3336 | } | |
14f9c5c9 | 3337 | } |
d2e4a39e | 3338 | |
14f9c5c9 | 3339 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3340 | "overload-choice"); |
14f9c5c9 AS |
3341 | |
3342 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3343 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3344 | |
3345 | return n_chosen; | |
3346 | } | |
3347 | ||
3348 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3349 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3350 | order in CHOICES[0 .. N-1], and return N. |
3351 | ||
3352 | The user types choices as a sequence of numbers on one line | |
3353 | separated by blanks, encoding them as follows: | |
3354 | ||
4c4b4cd2 | 3355 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3356 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3357 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3358 | ||
4c4b4cd2 | 3359 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3360 | |
3361 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3362 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3363 | |
3364 | int | |
d2e4a39e | 3365 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3366 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3367 | { |
d2e4a39e AS |
3368 | char *args; |
3369 | const char *prompt; | |
14f9c5c9 AS |
3370 | int n_chosen; |
3371 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3372 | |
14f9c5c9 AS |
3373 | prompt = getenv ("PS2"); |
3374 | if (prompt == NULL) | |
3375 | prompt = ">"; | |
3376 | ||
a3f17187 | 3377 | printf_unfiltered (("%s "), prompt); |
14f9c5c9 AS |
3378 | gdb_flush (gdb_stdout); |
3379 | ||
3380 | args = command_line_input ((char *) NULL, 0, annotation_suffix); | |
d2e4a39e | 3381 | |
14f9c5c9 | 3382 | if (args == NULL) |
323e0a4a | 3383 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3384 | |
3385 | n_chosen = 0; | |
76a01679 | 3386 | |
4c4b4cd2 PH |
3387 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3388 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3389 | while (1) |
3390 | { | |
d2e4a39e | 3391 | char *args2; |
14f9c5c9 AS |
3392 | int choice, j; |
3393 | ||
3394 | while (isspace (*args)) | |
4c4b4cd2 | 3395 | args += 1; |
14f9c5c9 | 3396 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3397 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3398 | else if (*args == '\0') |
4c4b4cd2 | 3399 | break; |
14f9c5c9 AS |
3400 | |
3401 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3402 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3403 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3404 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3405 | args = args2; |
3406 | ||
d2e4a39e | 3407 | if (choice == 0) |
323e0a4a | 3408 | error (_("cancelled")); |
14f9c5c9 AS |
3409 | |
3410 | if (choice < first_choice) | |
4c4b4cd2 PH |
3411 | { |
3412 | n_chosen = n_choices; | |
3413 | for (j = 0; j < n_choices; j += 1) | |
3414 | choices[j] = j; | |
3415 | break; | |
3416 | } | |
14f9c5c9 AS |
3417 | choice -= first_choice; |
3418 | ||
d2e4a39e | 3419 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3420 | { |
3421 | } | |
14f9c5c9 AS |
3422 | |
3423 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3424 | { |
3425 | int k; | |
3426 | for (k = n_chosen - 1; k > j; k -= 1) | |
3427 | choices[k + 1] = choices[k]; | |
3428 | choices[j + 1] = choice; | |
3429 | n_chosen += 1; | |
3430 | } | |
14f9c5c9 AS |
3431 | } |
3432 | ||
3433 | if (n_chosen > max_results) | |
323e0a4a | 3434 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3435 | |
14f9c5c9 AS |
3436 | return n_chosen; |
3437 | } | |
3438 | ||
4c4b4cd2 PH |
3439 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3440 | on the function identified by SYM and BLOCK, and taking NARGS | |
3441 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3442 | |
3443 | static void | |
d2e4a39e | 3444 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3445 | int oplen, struct symbol *sym, |
3446 | struct block *block) | |
14f9c5c9 AS |
3447 | { |
3448 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3449 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3450 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3451 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3452 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3453 | struct expression *exp = *expp; |
14f9c5c9 AS |
3454 | |
3455 | newexp->nelts = exp->nelts + 7 - oplen; | |
3456 | newexp->language_defn = exp->language_defn; | |
3457 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3458 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3459 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3460 | |
3461 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3462 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3463 | ||
3464 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3465 | newexp->elts[pc + 4].block = block; | |
3466 | newexp->elts[pc + 5].symbol = sym; | |
3467 | ||
3468 | *expp = newexp; | |
aacb1f0a | 3469 | xfree (exp); |
d2e4a39e | 3470 | } |
14f9c5c9 AS |
3471 | |
3472 | /* Type-class predicates */ | |
3473 | ||
4c4b4cd2 PH |
3474 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3475 | or FLOAT). */ | |
14f9c5c9 AS |
3476 | |
3477 | static int | |
d2e4a39e | 3478 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3479 | { |
3480 | if (type == NULL) | |
3481 | return 0; | |
d2e4a39e AS |
3482 | else |
3483 | { | |
3484 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3485 | { |
3486 | case TYPE_CODE_INT: | |
3487 | case TYPE_CODE_FLT: | |
3488 | return 1; | |
3489 | case TYPE_CODE_RANGE: | |
3490 | return (type == TYPE_TARGET_TYPE (type) | |
3491 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3492 | default: | |
3493 | return 0; | |
3494 | } | |
d2e4a39e | 3495 | } |
14f9c5c9 AS |
3496 | } |
3497 | ||
4c4b4cd2 | 3498 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3499 | |
3500 | static int | |
d2e4a39e | 3501 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3502 | { |
3503 | if (type == NULL) | |
3504 | return 0; | |
d2e4a39e AS |
3505 | else |
3506 | { | |
3507 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3508 | { |
3509 | case TYPE_CODE_INT: | |
3510 | return 1; | |
3511 | case TYPE_CODE_RANGE: | |
3512 | return (type == TYPE_TARGET_TYPE (type) | |
3513 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3514 | default: | |
3515 | return 0; | |
3516 | } | |
d2e4a39e | 3517 | } |
14f9c5c9 AS |
3518 | } |
3519 | ||
4c4b4cd2 | 3520 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3521 | |
3522 | static int | |
d2e4a39e | 3523 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3524 | { |
3525 | if (type == NULL) | |
3526 | return 0; | |
d2e4a39e AS |
3527 | else |
3528 | { | |
3529 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3530 | { |
3531 | case TYPE_CODE_INT: | |
3532 | case TYPE_CODE_RANGE: | |
3533 | case TYPE_CODE_ENUM: | |
3534 | case TYPE_CODE_FLT: | |
3535 | return 1; | |
3536 | default: | |
3537 | return 0; | |
3538 | } | |
d2e4a39e | 3539 | } |
14f9c5c9 AS |
3540 | } |
3541 | ||
4c4b4cd2 | 3542 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3543 | |
3544 | static int | |
d2e4a39e | 3545 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3546 | { |
3547 | if (type == NULL) | |
3548 | return 0; | |
d2e4a39e AS |
3549 | else |
3550 | { | |
3551 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3552 | { |
3553 | case TYPE_CODE_INT: | |
3554 | case TYPE_CODE_RANGE: | |
3555 | case TYPE_CODE_ENUM: | |
3556 | return 1; | |
3557 | default: | |
3558 | return 0; | |
3559 | } | |
d2e4a39e | 3560 | } |
14f9c5c9 AS |
3561 | } |
3562 | ||
4c4b4cd2 PH |
3563 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3564 | a user-defined function. Errs on the side of pre-defined operators | |
3565 | (i.e., result 0). */ | |
14f9c5c9 AS |
3566 | |
3567 | static int | |
d2e4a39e | 3568 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3569 | { |
76a01679 | 3570 | struct type *type0 = |
df407dfe | 3571 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3572 | struct type *type1 = |
df407dfe | 3573 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3574 | |
4c4b4cd2 PH |
3575 | if (type0 == NULL) |
3576 | return 0; | |
3577 | ||
14f9c5c9 AS |
3578 | switch (op) |
3579 | { | |
3580 | default: | |
3581 | return 0; | |
3582 | ||
3583 | case BINOP_ADD: | |
3584 | case BINOP_SUB: | |
3585 | case BINOP_MUL: | |
3586 | case BINOP_DIV: | |
d2e4a39e | 3587 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3588 | |
3589 | case BINOP_REM: | |
3590 | case BINOP_MOD: | |
3591 | case BINOP_BITWISE_AND: | |
3592 | case BINOP_BITWISE_IOR: | |
3593 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3594 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3595 | |
3596 | case BINOP_EQUAL: | |
3597 | case BINOP_NOTEQUAL: | |
3598 | case BINOP_LESS: | |
3599 | case BINOP_GTR: | |
3600 | case BINOP_LEQ: | |
3601 | case BINOP_GEQ: | |
d2e4a39e | 3602 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3603 | |
3604 | case BINOP_CONCAT: | |
ee90b9ab | 3605 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3606 | |
3607 | case BINOP_EXP: | |
d2e4a39e | 3608 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3609 | |
3610 | case UNOP_NEG: | |
3611 | case UNOP_PLUS: | |
3612 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3613 | case UNOP_ABS: |
3614 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3615 | |
3616 | } | |
3617 | } | |
3618 | \f | |
4c4b4cd2 | 3619 | /* Renaming */ |
14f9c5c9 | 3620 | |
aeb5907d JB |
3621 | /* NOTES: |
3622 | ||
3623 | 1. In the following, we assume that a renaming type's name may | |
3624 | have an ___XD suffix. It would be nice if this went away at some | |
3625 | point. | |
3626 | 2. We handle both the (old) purely type-based representation of | |
3627 | renamings and the (new) variable-based encoding. At some point, | |
3628 | it is devoutly to be hoped that the former goes away | |
3629 | (FIXME: hilfinger-2007-07-09). | |
3630 | 3. Subprogram renamings are not implemented, although the XRS | |
3631 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3632 | ||
3633 | /* If SYM encodes a renaming, | |
3634 | ||
3635 | <renaming> renames <renamed entity>, | |
3636 | ||
3637 | sets *LEN to the length of the renamed entity's name, | |
3638 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3639 | the string describing the subcomponent selected from the renamed | |
3640 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming | |
3641 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR | |
3642 | are undefined). Otherwise, returns a value indicating the category | |
3643 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3644 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3645 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3646 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3647 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3648 | may be NULL, in which case they are not assigned. | |
3649 | ||
3650 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3651 | ||
3652 | enum ada_renaming_category | |
3653 | ada_parse_renaming (struct symbol *sym, | |
3654 | const char **renamed_entity, int *len, | |
3655 | const char **renaming_expr) | |
3656 | { | |
3657 | enum ada_renaming_category kind; | |
3658 | const char *info; | |
3659 | const char *suffix; | |
3660 | ||
3661 | if (sym == NULL) | |
3662 | return ADA_NOT_RENAMING; | |
3663 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3664 | { |
aeb5907d JB |
3665 | default: |
3666 | return ADA_NOT_RENAMING; | |
3667 | case LOC_TYPEDEF: | |
3668 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
3669 | renamed_entity, len, renaming_expr); | |
3670 | case LOC_LOCAL: | |
3671 | case LOC_STATIC: | |
3672 | case LOC_COMPUTED: | |
3673 | case LOC_OPTIMIZED_OUT: | |
3674 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
3675 | if (info == NULL) | |
3676 | return ADA_NOT_RENAMING; | |
3677 | switch (info[5]) | |
3678 | { | |
3679 | case '_': | |
3680 | kind = ADA_OBJECT_RENAMING; | |
3681 | info += 6; | |
3682 | break; | |
3683 | case 'E': | |
3684 | kind = ADA_EXCEPTION_RENAMING; | |
3685 | info += 7; | |
3686 | break; | |
3687 | case 'P': | |
3688 | kind = ADA_PACKAGE_RENAMING; | |
3689 | info += 7; | |
3690 | break; | |
3691 | case 'S': | |
3692 | kind = ADA_SUBPROGRAM_RENAMING; | |
3693 | info += 7; | |
3694 | break; | |
3695 | default: | |
3696 | return ADA_NOT_RENAMING; | |
3697 | } | |
14f9c5c9 | 3698 | } |
4c4b4cd2 | 3699 | |
aeb5907d JB |
3700 | if (renamed_entity != NULL) |
3701 | *renamed_entity = info; | |
3702 | suffix = strstr (info, "___XE"); | |
3703 | if (suffix == NULL || suffix == info) | |
3704 | return ADA_NOT_RENAMING; | |
3705 | if (len != NULL) | |
3706 | *len = strlen (info) - strlen (suffix); | |
3707 | suffix += 5; | |
3708 | if (renaming_expr != NULL) | |
3709 | *renaming_expr = suffix; | |
3710 | return kind; | |
3711 | } | |
3712 | ||
3713 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
3714 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
3715 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
3716 | ADA_NOT_RENAMING otherwise. */ | |
3717 | static enum ada_renaming_category | |
3718 | parse_old_style_renaming (struct type *type, | |
3719 | const char **renamed_entity, int *len, | |
3720 | const char **renaming_expr) | |
3721 | { | |
3722 | enum ada_renaming_category kind; | |
3723 | const char *name; | |
3724 | const char *info; | |
3725 | const char *suffix; | |
14f9c5c9 | 3726 | |
aeb5907d JB |
3727 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
3728 | || TYPE_NFIELDS (type) != 1) | |
3729 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 3730 | |
aeb5907d JB |
3731 | name = type_name_no_tag (type); |
3732 | if (name == NULL) | |
3733 | return ADA_NOT_RENAMING; | |
3734 | ||
3735 | name = strstr (name, "___XR"); | |
3736 | if (name == NULL) | |
3737 | return ADA_NOT_RENAMING; | |
3738 | switch (name[5]) | |
3739 | { | |
3740 | case '\0': | |
3741 | case '_': | |
3742 | kind = ADA_OBJECT_RENAMING; | |
3743 | break; | |
3744 | case 'E': | |
3745 | kind = ADA_EXCEPTION_RENAMING; | |
3746 | break; | |
3747 | case 'P': | |
3748 | kind = ADA_PACKAGE_RENAMING; | |
3749 | break; | |
3750 | case 'S': | |
3751 | kind = ADA_SUBPROGRAM_RENAMING; | |
3752 | break; | |
3753 | default: | |
3754 | return ADA_NOT_RENAMING; | |
3755 | } | |
14f9c5c9 | 3756 | |
aeb5907d JB |
3757 | info = TYPE_FIELD_NAME (type, 0); |
3758 | if (info == NULL) | |
3759 | return ADA_NOT_RENAMING; | |
3760 | if (renamed_entity != NULL) | |
3761 | *renamed_entity = info; | |
3762 | suffix = strstr (info, "___XE"); | |
3763 | if (renaming_expr != NULL) | |
3764 | *renaming_expr = suffix + 5; | |
3765 | if (suffix == NULL || suffix == info) | |
3766 | return ADA_NOT_RENAMING; | |
3767 | if (len != NULL) | |
3768 | *len = suffix - info; | |
3769 | return kind; | |
3770 | } | |
52ce6436 | 3771 | |
14f9c5c9 | 3772 | \f |
d2e4a39e | 3773 | |
4c4b4cd2 | 3774 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3775 | |
4c4b4cd2 PH |
3776 | /* Return an lvalue containing the value VAL. This is the identity on |
3777 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3778 | on the stack, using and updating *SP as the stack pointer, and | |
3779 | returning an lvalue whose VALUE_ADDRESS points to the copy. */ | |
14f9c5c9 | 3780 | |
d2e4a39e | 3781 | static struct value * |
4c4b4cd2 | 3782 | ensure_lval (struct value *val, CORE_ADDR *sp) |
14f9c5c9 | 3783 | { |
c3e5cd34 PH |
3784 | if (! VALUE_LVAL (val)) |
3785 | { | |
df407dfe | 3786 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
c3e5cd34 PH |
3787 | |
3788 | /* The following is taken from the structure-return code in | |
3789 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3790 | indicated. */ | |
4d1e7dd1 | 3791 | if (gdbarch_inner_than (current_gdbarch, 1, 2)) |
c3e5cd34 PH |
3792 | { |
3793 | /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after | |
3794 | reserving sufficient space. */ | |
3795 | *sp -= len; | |
3796 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3797 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3798 | VALUE_ADDRESS (val) = *sp; | |
3799 | } | |
3800 | else | |
3801 | { | |
3802 | /* Stack grows upward. Align the frame, allocate space, and | |
3803 | then again, re-align the frame. */ | |
3804 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3805 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3806 | VALUE_ADDRESS (val) = *sp; | |
3807 | *sp += len; | |
3808 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3809 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3810 | } | |
14f9c5c9 | 3811 | |
990a07ab | 3812 | write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len); |
c3e5cd34 | 3813 | } |
14f9c5c9 AS |
3814 | |
3815 | return val; | |
3816 | } | |
3817 | ||
3818 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3819 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3820 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3821 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3822 | |
d2e4a39e AS |
3823 | static struct value * |
3824 | convert_actual (struct value *actual, struct type *formal_type0, | |
4c4b4cd2 | 3825 | CORE_ADDR *sp) |
14f9c5c9 | 3826 | { |
df407dfe | 3827 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 3828 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
3829 | struct type *formal_target = |
3830 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3831 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3832 | struct type *actual_target = |
3833 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3834 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3835 | |
4c4b4cd2 | 3836 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 AS |
3837 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
3838 | return make_array_descriptor (formal_type, actual, sp); | |
3839 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR) | |
3840 | { | |
3841 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
3842 | && ada_is_array_descriptor_type (actual_target)) |
3843 | return desc_data (actual); | |
14f9c5c9 | 3844 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3845 | { |
3846 | if (VALUE_LVAL (actual) != lval_memory) | |
3847 | { | |
3848 | struct value *val; | |
df407dfe | 3849 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 3850 | val = allocate_value (actual_type); |
990a07ab | 3851 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 3852 | (char *) value_contents (actual), |
4c4b4cd2 PH |
3853 | TYPE_LENGTH (actual_type)); |
3854 | actual = ensure_lval (val, sp); | |
3855 | } | |
3856 | return value_addr (actual); | |
3857 | } | |
14f9c5c9 AS |
3858 | } |
3859 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3860 | return ada_value_ind (actual); | |
3861 | ||
3862 | return actual; | |
3863 | } | |
3864 | ||
3865 | ||
4c4b4cd2 PH |
3866 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3867 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3868 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3869 | to-descriptor type rather than a descriptor type), a struct value * |
3870 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3871 | |
d2e4a39e AS |
3872 | static struct value * |
3873 | make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) | |
14f9c5c9 | 3874 | { |
d2e4a39e AS |
3875 | struct type *bounds_type = desc_bounds_type (type); |
3876 | struct type *desc_type = desc_base_type (type); | |
3877 | struct value *descriptor = allocate_value (desc_type); | |
3878 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3879 | int i; |
d2e4a39e | 3880 | |
df407dfe | 3881 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1) |
14f9c5c9 | 3882 | { |
0fd88904 | 3883 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3884 | value_as_long (ada_array_bound (arr, i, 0)), |
3885 | desc_bound_bitpos (bounds_type, i, 0), | |
3886 | desc_bound_bitsize (bounds_type, i, 0)); | |
0fd88904 | 3887 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3888 | value_as_long (ada_array_bound (arr, i, 1)), |
3889 | desc_bound_bitpos (bounds_type, i, 1), | |
3890 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3891 | } |
d2e4a39e | 3892 | |
4c4b4cd2 | 3893 | bounds = ensure_lval (bounds, sp); |
d2e4a39e | 3894 | |
0fd88904 | 3895 | modify_general_field (value_contents_writeable (descriptor), |
76a01679 JB |
3896 | VALUE_ADDRESS (ensure_lval (arr, sp)), |
3897 | fat_pntr_data_bitpos (desc_type), | |
3898 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3899 | |
0fd88904 | 3900 | modify_general_field (value_contents_writeable (descriptor), |
4c4b4cd2 PH |
3901 | VALUE_ADDRESS (bounds), |
3902 | fat_pntr_bounds_bitpos (desc_type), | |
3903 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3904 | |
4c4b4cd2 | 3905 | descriptor = ensure_lval (descriptor, sp); |
14f9c5c9 AS |
3906 | |
3907 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3908 | return value_addr (descriptor); | |
3909 | else | |
3910 | return descriptor; | |
3911 | } | |
3912 | ||
3913 | ||
4c4b4cd2 | 3914 | /* Assuming a dummy frame has been established on the target, perform any |
14f9c5c9 | 3915 | conversions needed for calling function FUNC on the NARGS actual |
4c4b4cd2 | 3916 | parameters in ARGS, other than standard C conversions. Does |
14f9c5c9 | 3917 | nothing if FUNC does not have Ada-style prototype data, or if NARGS |
4c4b4cd2 | 3918 | does not match the number of arguments expected. Use *SP as a |
14f9c5c9 | 3919 | stack pointer for additional data that must be pushed, updating its |
4c4b4cd2 | 3920 | value as needed. */ |
14f9c5c9 AS |
3921 | |
3922 | void | |
d2e4a39e | 3923 | ada_convert_actuals (struct value *func, int nargs, struct value *args[], |
4c4b4cd2 | 3924 | CORE_ADDR *sp) |
14f9c5c9 AS |
3925 | { |
3926 | int i; | |
3927 | ||
df407dfe AC |
3928 | if (TYPE_NFIELDS (value_type (func)) == 0 |
3929 | || nargs != TYPE_NFIELDS (value_type (func))) | |
14f9c5c9 AS |
3930 | return; |
3931 | ||
3932 | for (i = 0; i < nargs; i += 1) | |
d2e4a39e | 3933 | args[i] = |
df407dfe | 3934 | convert_actual (args[i], TYPE_FIELD_TYPE (value_type (func), i), sp); |
14f9c5c9 | 3935 | } |
14f9c5c9 | 3936 | \f |
963a6417 PH |
3937 | /* Dummy definitions for an experimental caching module that is not |
3938 | * used in the public sources. */ | |
96d887e8 | 3939 | |
96d887e8 PH |
3940 | static int |
3941 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
76a01679 JB |
3942 | struct symbol **sym, struct block **block, |
3943 | struct symtab **symtab) | |
96d887e8 PH |
3944 | { |
3945 | return 0; | |
3946 | } | |
3947 | ||
3948 | static void | |
3949 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
76a01679 | 3950 | struct block *block, struct symtab *symtab) |
96d887e8 PH |
3951 | { |
3952 | } | |
4c4b4cd2 PH |
3953 | \f |
3954 | /* Symbol Lookup */ | |
3955 | ||
3956 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3957 | given DOMAIN, visible from lexical block BLOCK. */ | |
3958 | ||
3959 | static struct symbol * | |
3960 | standard_lookup (const char *name, const struct block *block, | |
3961 | domain_enum domain) | |
3962 | { | |
3963 | struct symbol *sym; | |
3964 | struct symtab *symtab; | |
3965 | ||
3966 | if (lookup_cached_symbol (name, domain, &sym, NULL, NULL)) | |
3967 | return sym; | |
76a01679 JB |
3968 | sym = |
3969 | lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab); | |
4c4b4cd2 PH |
3970 | cache_symbol (name, domain, sym, block_found, symtab); |
3971 | return sym; | |
3972 | } | |
3973 | ||
3974 | ||
3975 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
3976 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
3977 | since they contend in overloading in the same way. */ | |
3978 | static int | |
3979 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
3980 | { | |
3981 | int i; | |
3982 | ||
3983 | for (i = 0; i < n; i += 1) | |
3984 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
3985 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
3986 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
3987 | return 1; |
3988 | ||
3989 | return 0; | |
3990 | } | |
3991 | ||
3992 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 3993 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
3994 | |
3995 | static int | |
d2e4a39e | 3996 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 3997 | { |
d2e4a39e | 3998 | if (type0 == type1) |
14f9c5c9 | 3999 | return 1; |
d2e4a39e | 4000 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
4001 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
4002 | return 0; | |
d2e4a39e | 4003 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4004 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4005 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4006 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4007 | return 1; |
d2e4a39e | 4008 | |
14f9c5c9 AS |
4009 | return 0; |
4010 | } | |
4011 | ||
4012 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4013 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4014 | |
4015 | static int | |
d2e4a39e | 4016 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4017 | { |
4018 | if (sym0 == sym1) | |
4019 | return 1; | |
176620f1 | 4020 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4021 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4022 | return 0; | |
4023 | ||
d2e4a39e | 4024 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4025 | { |
4026 | case LOC_UNDEF: | |
4027 | return 1; | |
4028 | case LOC_TYPEDEF: | |
4029 | { | |
4c4b4cd2 PH |
4030 | struct type *type0 = SYMBOL_TYPE (sym0); |
4031 | struct type *type1 = SYMBOL_TYPE (sym1); | |
4032 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
4033 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4034 | int len0 = strlen (name0); | |
4035 | return | |
4036 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4037 | && (equiv_types (type0, type1) | |
4038 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4039 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
4040 | } |
4041 | case LOC_CONST: | |
4042 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4043 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4044 | default: |
4045 | return 0; | |
14f9c5c9 AS |
4046 | } |
4047 | } | |
4048 | ||
4c4b4cd2 PH |
4049 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
4050 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4051 | |
4052 | static void | |
76a01679 JB |
4053 | add_defn_to_vec (struct obstack *obstackp, |
4054 | struct symbol *sym, | |
4055 | struct block *block, struct symtab *symtab) | |
14f9c5c9 AS |
4056 | { |
4057 | int i; | |
4058 | size_t tmp; | |
4c4b4cd2 | 4059 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4060 | |
529cad9c PH |
4061 | /* Do not try to complete stub types, as the debugger is probably |
4062 | already scanning all symbols matching a certain name at the | |
4063 | time when this function is called. Trying to replace the stub | |
4064 | type by its associated full type will cause us to restart a scan | |
4065 | which may lead to an infinite recursion. Instead, the client | |
4066 | collecting the matching symbols will end up collecting several | |
4067 | matches, with at least one of them complete. It can then filter | |
4068 | out the stub ones if needed. */ | |
4069 | ||
4c4b4cd2 PH |
4070 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4071 | { | |
4072 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
4073 | return; | |
4074 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
4075 | { | |
4076 | prevDefns[i].sym = sym; | |
4077 | prevDefns[i].block = block; | |
76a01679 | 4078 | prevDefns[i].symtab = symtab; |
4c4b4cd2 | 4079 | return; |
76a01679 | 4080 | } |
4c4b4cd2 PH |
4081 | } |
4082 | ||
4083 | { | |
4084 | struct ada_symbol_info info; | |
4085 | ||
4086 | info.sym = sym; | |
4087 | info.block = block; | |
4088 | info.symtab = symtab; | |
4089 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); | |
4090 | } | |
4091 | } | |
4092 | ||
4093 | /* Number of ada_symbol_info structures currently collected in | |
4094 | current vector in *OBSTACKP. */ | |
4095 | ||
76a01679 JB |
4096 | static int |
4097 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
4098 | { |
4099 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
4100 | } | |
4101 | ||
4102 | /* Vector of ada_symbol_info structures currently collected in current | |
4103 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
4104 | its final address. */ | |
4105 | ||
76a01679 | 4106 | static struct ada_symbol_info * |
4c4b4cd2 PH |
4107 | defns_collected (struct obstack *obstackp, int finish) |
4108 | { | |
4109 | if (finish) | |
4110 | return obstack_finish (obstackp); | |
4111 | else | |
4112 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
4113 | } | |
4114 | ||
96d887e8 PH |
4115 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
4116 | Check the global symbols if GLOBAL, the static symbols if not. | |
4117 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 4118 | |
96d887e8 PH |
4119 | static struct partial_symbol * |
4120 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
4121 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 4122 | { |
96d887e8 PH |
4123 | struct partial_symbol **start; |
4124 | int name_len = strlen (name); | |
4125 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
4126 | int i; | |
4c4b4cd2 | 4127 | |
96d887e8 | 4128 | if (length == 0) |
4c4b4cd2 | 4129 | { |
96d887e8 | 4130 | return (NULL); |
4c4b4cd2 PH |
4131 | } |
4132 | ||
96d887e8 PH |
4133 | start = (global ? |
4134 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
4135 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 4136 | |
96d887e8 | 4137 | if (wild) |
4c4b4cd2 | 4138 | { |
96d887e8 PH |
4139 | for (i = 0; i < length; i += 1) |
4140 | { | |
4141 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4142 | |
1265e4aa JB |
4143 | if (SYMBOL_DOMAIN (psym) == namespace |
4144 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) | |
96d887e8 PH |
4145 | return psym; |
4146 | } | |
4147 | return NULL; | |
4c4b4cd2 | 4148 | } |
96d887e8 PH |
4149 | else |
4150 | { | |
4151 | if (global) | |
4152 | { | |
4153 | int U; | |
4154 | i = 0; | |
4155 | U = length - 1; | |
4156 | while (U - i > 4) | |
4157 | { | |
4158 | int M = (U + i) >> 1; | |
4159 | struct partial_symbol *psym = start[M]; | |
4160 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
4161 | i = M + 1; | |
4162 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
4163 | U = M - 1; | |
4164 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
4165 | i = M + 1; | |
4166 | else | |
4167 | U = M; | |
4168 | } | |
4169 | } | |
4170 | else | |
4171 | i = 0; | |
4c4b4cd2 | 4172 | |
96d887e8 PH |
4173 | while (i < length) |
4174 | { | |
4175 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4176 | |
96d887e8 PH |
4177 | if (SYMBOL_DOMAIN (psym) == namespace) |
4178 | { | |
4179 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 4180 | |
96d887e8 PH |
4181 | if (cmp < 0) |
4182 | { | |
4183 | if (global) | |
4184 | break; | |
4185 | } | |
4186 | else if (cmp == 0 | |
4187 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4188 | + name_len)) |
96d887e8 PH |
4189 | return psym; |
4190 | } | |
4191 | i += 1; | |
4192 | } | |
4c4b4cd2 | 4193 | |
96d887e8 PH |
4194 | if (global) |
4195 | { | |
4196 | int U; | |
4197 | i = 0; | |
4198 | U = length - 1; | |
4199 | while (U - i > 4) | |
4200 | { | |
4201 | int M = (U + i) >> 1; | |
4202 | struct partial_symbol *psym = start[M]; | |
4203 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
4204 | i = M + 1; | |
4205 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
4206 | U = M - 1; | |
4207 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
4208 | i = M + 1; | |
4209 | else | |
4210 | U = M; | |
4211 | } | |
4212 | } | |
4213 | else | |
4214 | i = 0; | |
4c4b4cd2 | 4215 | |
96d887e8 PH |
4216 | while (i < length) |
4217 | { | |
4218 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4219 | |
96d887e8 PH |
4220 | if (SYMBOL_DOMAIN (psym) == namespace) |
4221 | { | |
4222 | int cmp; | |
4c4b4cd2 | 4223 | |
96d887e8 PH |
4224 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
4225 | if (cmp == 0) | |
4226 | { | |
4227 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
4228 | if (cmp == 0) | |
4229 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 4230 | name_len); |
96d887e8 | 4231 | } |
4c4b4cd2 | 4232 | |
96d887e8 PH |
4233 | if (cmp < 0) |
4234 | { | |
4235 | if (global) | |
4236 | break; | |
4237 | } | |
4238 | else if (cmp == 0 | |
4239 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4240 | + name_len + 5)) |
96d887e8 PH |
4241 | return psym; |
4242 | } | |
4243 | i += 1; | |
4244 | } | |
4245 | } | |
4246 | return NULL; | |
4c4b4cd2 PH |
4247 | } |
4248 | ||
96d887e8 | 4249 | /* Find a symbol table containing symbol SYM or NULL if none. */ |
4c4b4cd2 | 4250 | |
96d887e8 PH |
4251 | static struct symtab * |
4252 | symtab_for_sym (struct symbol *sym) | |
4c4b4cd2 | 4253 | { |
96d887e8 PH |
4254 | struct symtab *s; |
4255 | struct objfile *objfile; | |
4256 | struct block *b; | |
4257 | struct symbol *tmp_sym; | |
4258 | struct dict_iterator iter; | |
4259 | int j; | |
4c4b4cd2 | 4260 | |
11309657 | 4261 | ALL_PRIMARY_SYMTABS (objfile, s) |
96d887e8 PH |
4262 | { |
4263 | switch (SYMBOL_CLASS (sym)) | |
4264 | { | |
4265 | case LOC_CONST: | |
4266 | case LOC_STATIC: | |
4267 | case LOC_TYPEDEF: | |
4268 | case LOC_REGISTER: | |
4269 | case LOC_LABEL: | |
4270 | case LOC_BLOCK: | |
4271 | case LOC_CONST_BYTES: | |
76a01679 JB |
4272 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
4273 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4274 | return s; | |
4275 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
4276 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4277 | return s; | |
96d887e8 PH |
4278 | break; |
4279 | default: | |
4280 | break; | |
4281 | } | |
4282 | switch (SYMBOL_CLASS (sym)) | |
4283 | { | |
4284 | case LOC_REGISTER: | |
4285 | case LOC_ARG: | |
4286 | case LOC_REF_ARG: | |
4287 | case LOC_REGPARM: | |
4288 | case LOC_REGPARM_ADDR: | |
4289 | case LOC_LOCAL: | |
4290 | case LOC_TYPEDEF: | |
4291 | case LOC_LOCAL_ARG: | |
4292 | case LOC_BASEREG: | |
4293 | case LOC_BASEREG_ARG: | |
4294 | case LOC_COMPUTED: | |
4295 | case LOC_COMPUTED_ARG: | |
76a01679 JB |
4296 | for (j = FIRST_LOCAL_BLOCK; |
4297 | j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1) | |
4298 | { | |
4299 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j); | |
4300 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4301 | return s; | |
4302 | } | |
4303 | break; | |
96d887e8 PH |
4304 | default: |
4305 | break; | |
4306 | } | |
4307 | } | |
4308 | return NULL; | |
4c4b4cd2 PH |
4309 | } |
4310 | ||
96d887e8 PH |
4311 | /* Return a minimal symbol matching NAME according to Ada decoding |
4312 | rules. Returns NULL if there is no such minimal symbol. Names | |
4313 | prefixed with "standard__" are handled specially: "standard__" is | |
4314 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 4315 | |
96d887e8 PH |
4316 | struct minimal_symbol * |
4317 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4318 | { |
4c4b4cd2 | 4319 | struct objfile *objfile; |
96d887e8 PH |
4320 | struct minimal_symbol *msymbol; |
4321 | int wild_match; | |
4c4b4cd2 | 4322 | |
96d887e8 | 4323 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 4324 | { |
96d887e8 | 4325 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4326 | wild_match = 0; |
4c4b4cd2 PH |
4327 | } |
4328 | else | |
96d887e8 | 4329 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 4330 | |
96d887e8 PH |
4331 | ALL_MSYMBOLS (objfile, msymbol) |
4332 | { | |
4333 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
4334 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4335 | return msymbol; | |
4336 | } | |
4c4b4cd2 | 4337 | |
96d887e8 PH |
4338 | return NULL; |
4339 | } | |
4c4b4cd2 | 4340 | |
96d887e8 PH |
4341 | /* For all subprograms that statically enclose the subprogram of the |
4342 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4343 | and their blocks to the list of data in OBSTACKP, as for | |
4344 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4345 | wildcard prefix. */ | |
4c4b4cd2 | 4346 | |
96d887e8 PH |
4347 | static void |
4348 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4349 | const char *name, domain_enum namespace, |
96d887e8 PH |
4350 | int wild_match) |
4351 | { | |
96d887e8 | 4352 | } |
14f9c5c9 | 4353 | |
96d887e8 PH |
4354 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4355 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4356 | |
96d887e8 PH |
4357 | static int |
4358 | is_nondebugging_type (struct type *type) | |
4359 | { | |
4360 | char *name = ada_type_name (type); | |
4361 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4362 | } | |
4c4b4cd2 | 4363 | |
96d887e8 PH |
4364 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4365 | duplicate other symbols in the list (The only case I know of where | |
4366 | this happens is when object files containing stabs-in-ecoff are | |
4367 | linked with files containing ordinary ecoff debugging symbols (or no | |
4368 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4369 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4370 | |
96d887e8 PH |
4371 | static int |
4372 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4373 | { | |
4374 | int i, j; | |
4c4b4cd2 | 4375 | |
96d887e8 PH |
4376 | i = 0; |
4377 | while (i < nsyms) | |
4378 | { | |
4379 | if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
4380 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC | |
4381 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4382 | { | |
4383 | for (j = 0; j < nsyms; j += 1) | |
4384 | { | |
4385 | if (i != j | |
4386 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4387 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4388 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4389 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4390 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4391 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
4c4b4cd2 | 4392 | { |
96d887e8 PH |
4393 | int k; |
4394 | for (k = i + 1; k < nsyms; k += 1) | |
76a01679 | 4395 | syms[k - 1] = syms[k]; |
96d887e8 PH |
4396 | nsyms -= 1; |
4397 | goto NextSymbol; | |
4c4b4cd2 | 4398 | } |
4c4b4cd2 | 4399 | } |
4c4b4cd2 | 4400 | } |
96d887e8 PH |
4401 | i += 1; |
4402 | NextSymbol: | |
4403 | ; | |
14f9c5c9 | 4404 | } |
96d887e8 | 4405 | return nsyms; |
14f9c5c9 AS |
4406 | } |
4407 | ||
96d887e8 PH |
4408 | /* Given a type that corresponds to a renaming entity, use the type name |
4409 | to extract the scope (package name or function name, fully qualified, | |
4410 | and following the GNAT encoding convention) where this renaming has been | |
4411 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4412 | |
96d887e8 PH |
4413 | static char * |
4414 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4415 | { |
96d887e8 PH |
4416 | /* The renaming types adhere to the following convention: |
4417 | <scope>__<rename>___<XR extension>. | |
4418 | So, to extract the scope, we search for the "___XR" extension, | |
4419 | and then backtrack until we find the first "__". */ | |
76a01679 | 4420 | |
96d887e8 PH |
4421 | const char *name = type_name_no_tag (renaming_type); |
4422 | char *suffix = strstr (name, "___XR"); | |
4423 | char *last; | |
4424 | int scope_len; | |
4425 | char *scope; | |
14f9c5c9 | 4426 | |
96d887e8 PH |
4427 | /* Now, backtrack a bit until we find the first "__". Start looking |
4428 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4429 | |
96d887e8 PH |
4430 | for (last = suffix - 3; last > name; last--) |
4431 | if (last[0] == '_' && last[1] == '_') | |
4432 | break; | |
76a01679 | 4433 | |
96d887e8 | 4434 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4435 | |
96d887e8 PH |
4436 | scope_len = last - name; |
4437 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4438 | |
96d887e8 PH |
4439 | strncpy (scope, name, scope_len); |
4440 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4441 | |
96d887e8 | 4442 | return scope; |
4c4b4cd2 PH |
4443 | } |
4444 | ||
96d887e8 | 4445 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4446 | |
96d887e8 PH |
4447 | static int |
4448 | is_package_name (const char *name) | |
4c4b4cd2 | 4449 | { |
96d887e8 PH |
4450 | /* Here, We take advantage of the fact that no symbols are generated |
4451 | for packages, while symbols are generated for each function. | |
4452 | So the condition for NAME represent a package becomes equivalent | |
4453 | to NAME not existing in our list of symbols. There is only one | |
4454 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4455 | |
96d887e8 | 4456 | char *fun_name; |
76a01679 | 4457 | |
96d887e8 PH |
4458 | /* If it is a function that has not been defined at library level, |
4459 | then we should be able to look it up in the symbols. */ | |
4460 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4461 | return 0; | |
14f9c5c9 | 4462 | |
96d887e8 PH |
4463 | /* Library-level function names start with "_ada_". See if function |
4464 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4465 | |
96d887e8 | 4466 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4467 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4468 | if (strstr (name, "__") != NULL) |
4469 | return 0; | |
4c4b4cd2 | 4470 | |
b435e160 | 4471 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4472 | |
96d887e8 PH |
4473 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4474 | } | |
14f9c5c9 | 4475 | |
96d887e8 | 4476 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4477 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4478 | |
96d887e8 | 4479 | static int |
aeb5907d | 4480 | old_renaming_is_invisible (const struct symbol *sym, char *function_name) |
96d887e8 | 4481 | { |
aeb5907d JB |
4482 | char *scope; |
4483 | ||
4484 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
4485 | return 0; | |
4486 | ||
4487 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4488 | |
96d887e8 | 4489 | make_cleanup (xfree, scope); |
14f9c5c9 | 4490 | |
96d887e8 PH |
4491 | /* If the rename has been defined in a package, then it is visible. */ |
4492 | if (is_package_name (scope)) | |
aeb5907d | 4493 | return 0; |
14f9c5c9 | 4494 | |
96d887e8 PH |
4495 | /* Check that the rename is in the current function scope by checking |
4496 | that its name starts with SCOPE. */ | |
76a01679 | 4497 | |
96d887e8 PH |
4498 | /* If the function name starts with "_ada_", it means that it is |
4499 | a library-level function. Strip this prefix before doing the | |
4500 | comparison, as the encoding for the renaming does not contain | |
4501 | this prefix. */ | |
4502 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4503 | function_name += 5; | |
f26caa11 | 4504 | |
aeb5907d | 4505 | return (strncmp (function_name, scope, strlen (scope)) != 0); |
f26caa11 PH |
4506 | } |
4507 | ||
aeb5907d JB |
4508 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4509 | is not visible from the function associated with CURRENT_BLOCK or | |
4510 | that is superfluous due to the presence of more specific renaming | |
4511 | information. Places surviving symbols in the initial entries of | |
4512 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
4513 | |
4514 | Rationale: | |
aeb5907d JB |
4515 | First, in cases where an object renaming is implemented as a |
4516 | reference variable, GNAT may produce both the actual reference | |
4517 | variable and the renaming encoding. In this case, we discard the | |
4518 | latter. | |
4519 | ||
4520 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4521 | entity. Unfortunately, STABS currently does not support the definition |
4522 | of types that are local to a given lexical block, so all renamings types | |
4523 | are emitted at library level. As a consequence, if an application | |
4524 | contains two renaming entities using the same name, and a user tries to | |
4525 | print the value of one of these entities, the result of the ada symbol | |
4526 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4527 | |
96d887e8 PH |
4528 | This function partially covers for this limitation by attempting to |
4529 | remove from the SYMS list renaming symbols that should be visible | |
4530 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4531 | method with the current information available. The implementation | |
4532 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4533 | ||
4534 | - When the user tries to print a rename in a function while there | |
4535 | is another rename entity defined in a package: Normally, the | |
4536 | rename in the function has precedence over the rename in the | |
4537 | package, so the latter should be removed from the list. This is | |
4538 | currently not the case. | |
4539 | ||
4540 | - This function will incorrectly remove valid renames if | |
4541 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4542 | has been changed by an "Export" pragma. As a consequence, | |
4543 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4544 | |
14f9c5c9 | 4545 | static int |
aeb5907d JB |
4546 | remove_irrelevant_renamings (struct ada_symbol_info *syms, |
4547 | int nsyms, const struct block *current_block) | |
4c4b4cd2 PH |
4548 | { |
4549 | struct symbol *current_function; | |
4550 | char *current_function_name; | |
4551 | int i; | |
aeb5907d JB |
4552 | int is_new_style_renaming; |
4553 | ||
4554 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4555 | a simple variable foo in the same block, discard the latter. | |
4556 | First, zero out such symbols, then compress. */ | |
4557 | is_new_style_renaming = 0; | |
4558 | for (i = 0; i < nsyms; i += 1) | |
4559 | { | |
4560 | struct symbol *sym = syms[i].sym; | |
4561 | struct block *block = syms[i].block; | |
4562 | const char *name; | |
4563 | const char *suffix; | |
4564 | ||
4565 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4566 | continue; | |
4567 | name = SYMBOL_LINKAGE_NAME (sym); | |
4568 | suffix = strstr (name, "___XR"); | |
4569 | ||
4570 | if (suffix != NULL) | |
4571 | { | |
4572 | int name_len = suffix - name; | |
4573 | int j; | |
4574 | is_new_style_renaming = 1; | |
4575 | for (j = 0; j < nsyms; j += 1) | |
4576 | if (i != j && syms[j].sym != NULL | |
4577 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym), | |
4578 | name_len) == 0 | |
4579 | && block == syms[j].block) | |
4580 | syms[j].sym = NULL; | |
4581 | } | |
4582 | } | |
4583 | if (is_new_style_renaming) | |
4584 | { | |
4585 | int j, k; | |
4586 | ||
4587 | for (j = k = 0; j < nsyms; j += 1) | |
4588 | if (syms[j].sym != NULL) | |
4589 | { | |
4590 | syms[k] = syms[j]; | |
4591 | k += 1; | |
4592 | } | |
4593 | return k; | |
4594 | } | |
4c4b4cd2 PH |
4595 | |
4596 | /* Extract the function name associated to CURRENT_BLOCK. | |
4597 | Abort if unable to do so. */ | |
76a01679 | 4598 | |
4c4b4cd2 PH |
4599 | if (current_block == NULL) |
4600 | return nsyms; | |
76a01679 | 4601 | |
4c4b4cd2 PH |
4602 | current_function = block_function (current_block); |
4603 | if (current_function == NULL) | |
4604 | return nsyms; | |
4605 | ||
4606 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4607 | if (current_function_name == NULL) | |
4608 | return nsyms; | |
4609 | ||
4610 | /* Check each of the symbols, and remove it from the list if it is | |
4611 | a type corresponding to a renaming that is out of the scope of | |
4612 | the current block. */ | |
4613 | ||
4614 | i = 0; | |
4615 | while (i < nsyms) | |
4616 | { | |
aeb5907d JB |
4617 | if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL) |
4618 | == ADA_OBJECT_RENAMING | |
4619 | && old_renaming_is_invisible (syms[i].sym, current_function_name)) | |
4c4b4cd2 PH |
4620 | { |
4621 | int j; | |
aeb5907d | 4622 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 4623 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4624 | nsyms -= 1; |
4625 | } | |
4626 | else | |
4627 | i += 1; | |
4628 | } | |
4629 | ||
4630 | return nsyms; | |
4631 | } | |
4632 | ||
4633 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing | |
4634 | scope and in global scopes, returning the number of matches. Sets | |
4635 | *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples, | |
4636 | indicating the symbols found and the blocks and symbol tables (if | |
4637 | any) in which they were found. This vector are transient---good only to | |
4638 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4639 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4640 | is the one match returned (no other matches in that or | |
4641 | enclosing blocks is returned). If there are any matches in or | |
4642 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4643 | search extends to global and file-scope (static) symbol tables. | |
4644 | Names prefixed with "standard__" are handled specially: "standard__" | |
4645 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4646 | |
4647 | int | |
4c4b4cd2 | 4648 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4649 | domain_enum namespace, |
4650 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4651 | { |
4652 | struct symbol *sym; | |
4653 | struct symtab *s; | |
4654 | struct partial_symtab *ps; | |
4655 | struct blockvector *bv; | |
4656 | struct objfile *objfile; | |
14f9c5c9 | 4657 | struct block *block; |
4c4b4cd2 | 4658 | const char *name; |
14f9c5c9 | 4659 | struct minimal_symbol *msymbol; |
4c4b4cd2 | 4660 | int wild_match; |
14f9c5c9 | 4661 | int cacheIfUnique; |
4c4b4cd2 PH |
4662 | int block_depth; |
4663 | int ndefns; | |
14f9c5c9 | 4664 | |
4c4b4cd2 PH |
4665 | obstack_free (&symbol_list_obstack, NULL); |
4666 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4667 | |
14f9c5c9 AS |
4668 | cacheIfUnique = 0; |
4669 | ||
4670 | /* Search specified block and its superiors. */ | |
4671 | ||
4c4b4cd2 PH |
4672 | wild_match = (strstr (name0, "__") == NULL); |
4673 | name = name0; | |
76a01679 JB |
4674 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4675 | needed, but adding const will | |
4676 | have a cascade effect. */ | |
4c4b4cd2 PH |
4677 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4678 | { | |
4679 | wild_match = 0; | |
4680 | block = NULL; | |
4681 | name = name0 + sizeof ("standard__") - 1; | |
4682 | } | |
4683 | ||
4684 | block_depth = 0; | |
14f9c5c9 AS |
4685 | while (block != NULL) |
4686 | { | |
4c4b4cd2 | 4687 | block_depth += 1; |
76a01679 JB |
4688 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4689 | namespace, NULL, NULL, wild_match); | |
14f9c5c9 | 4690 | |
4c4b4cd2 PH |
4691 | /* If we found a non-function match, assume that's the one. */ |
4692 | if (is_nonfunction (defns_collected (&symbol_list_obstack, 0), | |
76a01679 | 4693 | num_defns_collected (&symbol_list_obstack))) |
4c4b4cd2 | 4694 | goto done; |
14f9c5c9 AS |
4695 | |
4696 | block = BLOCK_SUPERBLOCK (block); | |
4697 | } | |
4698 | ||
4c4b4cd2 PH |
4699 | /* If no luck so far, try to find NAME as a local symbol in some lexically |
4700 | enclosing subprogram. */ | |
4701 | if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2) | |
4702 | add_symbols_from_enclosing_procs (&symbol_list_obstack, | |
76a01679 | 4703 | name, namespace, wild_match); |
4c4b4cd2 PH |
4704 | |
4705 | /* If we found ANY matches among non-global symbols, we're done. */ | |
14f9c5c9 | 4706 | |
4c4b4cd2 | 4707 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4708 | goto done; |
d2e4a39e | 4709 | |
14f9c5c9 | 4710 | cacheIfUnique = 1; |
4c4b4cd2 PH |
4711 | if (lookup_cached_symbol (name0, namespace, &sym, &block, &s)) |
4712 | { | |
4713 | if (sym != NULL) | |
4714 | add_defn_to_vec (&symbol_list_obstack, sym, block, s); | |
4715 | goto done; | |
4716 | } | |
14f9c5c9 AS |
4717 | |
4718 | /* Now add symbols from all global blocks: symbol tables, minimal symbol | |
4c4b4cd2 | 4719 | tables, and psymtab's. */ |
14f9c5c9 | 4720 | |
11309657 | 4721 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e AS |
4722 | { |
4723 | QUIT; | |
d2e4a39e AS |
4724 | bv = BLOCKVECTOR (s); |
4725 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
76a01679 JB |
4726 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4727 | objfile, s, wild_match); | |
d2e4a39e | 4728 | } |
14f9c5c9 | 4729 | |
4c4b4cd2 | 4730 | if (namespace == VAR_DOMAIN) |
14f9c5c9 AS |
4731 | { |
4732 | ALL_MSYMBOLS (objfile, msymbol) | |
d2e4a39e | 4733 | { |
4c4b4cd2 PH |
4734 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)) |
4735 | { | |
4736 | switch (MSYMBOL_TYPE (msymbol)) | |
4737 | { | |
4738 | case mst_solib_trampoline: | |
4739 | break; | |
4740 | default: | |
4741 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); | |
4742 | if (s != NULL) | |
4743 | { | |
4744 | int ndefns0 = num_defns_collected (&symbol_list_obstack); | |
4745 | QUIT; | |
4746 | bv = BLOCKVECTOR (s); | |
4747 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4748 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4749 | SYMBOL_LINKAGE_NAME (msymbol), | |
4750 | namespace, objfile, s, wild_match); | |
76a01679 | 4751 | |
4c4b4cd2 PH |
4752 | if (num_defns_collected (&symbol_list_obstack) == ndefns0) |
4753 | { | |
4754 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
4755 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4756 | SYMBOL_LINKAGE_NAME (msymbol), | |
4757 | namespace, objfile, s, | |
4758 | wild_match); | |
4759 | } | |
4760 | } | |
4761 | } | |
4762 | } | |
d2e4a39e | 4763 | } |
14f9c5c9 | 4764 | } |
d2e4a39e | 4765 | |
14f9c5c9 | 4766 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e AS |
4767 | { |
4768 | QUIT; | |
4769 | if (!ps->readin | |
4c4b4cd2 | 4770 | && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match)) |
d2e4a39e | 4771 | { |
4c4b4cd2 PH |
4772 | s = PSYMTAB_TO_SYMTAB (ps); |
4773 | if (!s->primary) | |
4774 | continue; | |
4775 | bv = BLOCKVECTOR (s); | |
4776 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4777 | ada_add_block_symbols (&symbol_list_obstack, block, name, | |
76a01679 | 4778 | namespace, objfile, s, wild_match); |
d2e4a39e AS |
4779 | } |
4780 | } | |
4781 | ||
4c4b4cd2 | 4782 | /* Now add symbols from all per-file blocks if we've gotten no hits |
14f9c5c9 | 4783 | (Not strictly correct, but perhaps better than an error). |
4c4b4cd2 | 4784 | Do the symtabs first, then check the psymtabs. */ |
d2e4a39e | 4785 | |
4c4b4cd2 | 4786 | if (num_defns_collected (&symbol_list_obstack) == 0) |
14f9c5c9 AS |
4787 | { |
4788 | ||
11309657 | 4789 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e | 4790 | { |
4c4b4cd2 | 4791 | QUIT; |
4c4b4cd2 PH |
4792 | bv = BLOCKVECTOR (s); |
4793 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4794 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4795 | objfile, s, wild_match); | |
d2e4a39e AS |
4796 | } |
4797 | ||
14f9c5c9 | 4798 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e | 4799 | { |
4c4b4cd2 PH |
4800 | QUIT; |
4801 | if (!ps->readin | |
4802 | && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match)) | |
4803 | { | |
4804 | s = PSYMTAB_TO_SYMTAB (ps); | |
4805 | bv = BLOCKVECTOR (s); | |
4806 | if (!s->primary) | |
4807 | continue; | |
4808 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4809 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4810 | namespace, objfile, s, wild_match); | |
4c4b4cd2 | 4811 | } |
d2e4a39e AS |
4812 | } |
4813 | } | |
14f9c5c9 | 4814 | |
4c4b4cd2 PH |
4815 | done: |
4816 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4817 | *results = defns_collected (&symbol_list_obstack, 1); | |
4818 | ||
4819 | ndefns = remove_extra_symbols (*results, ndefns); | |
4820 | ||
d2e4a39e | 4821 | if (ndefns == 0) |
4c4b4cd2 | 4822 | cache_symbol (name0, namespace, NULL, NULL, NULL); |
14f9c5c9 | 4823 | |
4c4b4cd2 | 4824 | if (ndefns == 1 && cacheIfUnique) |
76a01679 JB |
4825 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block, |
4826 | (*results)[0].symtab); | |
14f9c5c9 | 4827 | |
aeb5907d | 4828 | ndefns = remove_irrelevant_renamings (*results, ndefns, block0); |
14f9c5c9 | 4829 | |
14f9c5c9 AS |
4830 | return ndefns; |
4831 | } | |
4832 | ||
d2e4a39e | 4833 | struct symbol * |
aeb5907d JB |
4834 | ada_lookup_encoded_symbol (const char *name, const struct block *block0, |
4835 | domain_enum namespace, | |
4836 | struct block **block_found, struct symtab **symtab) | |
14f9c5c9 | 4837 | { |
4c4b4cd2 | 4838 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4839 | int n_candidates; |
4840 | ||
aeb5907d | 4841 | n_candidates = ada_lookup_symbol_list (name, block0, namespace, &candidates); |
14f9c5c9 AS |
4842 | |
4843 | if (n_candidates == 0) | |
4844 | return NULL; | |
4c4b4cd2 | 4845 | |
aeb5907d JB |
4846 | if (block_found != NULL) |
4847 | *block_found = candidates[0].block; | |
4c4b4cd2 | 4848 | |
76a01679 | 4849 | if (symtab != NULL) |
4c4b4cd2 PH |
4850 | { |
4851 | *symtab = candidates[0].symtab; | |
76a01679 JB |
4852 | if (*symtab == NULL && candidates[0].block != NULL) |
4853 | { | |
4854 | struct objfile *objfile; | |
4855 | struct symtab *s; | |
4856 | struct block *b; | |
4857 | struct blockvector *bv; | |
4858 | ||
4859 | /* Search the list of symtabs for one which contains the | |
4860 | address of the start of this block. */ | |
11309657 | 4861 | ALL_PRIMARY_SYMTABS (objfile, s) |
76a01679 JB |
4862 | { |
4863 | bv = BLOCKVECTOR (s); | |
4864 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4865 | if (BLOCK_START (b) <= BLOCK_START (candidates[0].block) | |
4866 | && BLOCK_END (b) > BLOCK_START (candidates[0].block)) | |
4867 | { | |
4868 | *symtab = s; | |
4869 | return fixup_symbol_section (candidates[0].sym, objfile); | |
4870 | } | |
76a01679 | 4871 | } |
529cad9c PH |
4872 | /* FIXME: brobecker/2004-11-12: I think that we should never |
4873 | reach this point. I don't see a reason why we would not | |
4874 | find a symtab for a given block, so I suggest raising an | |
4875 | internal_error exception here. Otherwise, we end up | |
4876 | returning a symbol but no symtab, which certain parts of | |
4877 | the code that rely (indirectly) on this function do not | |
4878 | expect, eventually causing a SEGV. */ | |
4879 | return fixup_symbol_section (candidates[0].sym, NULL); | |
76a01679 JB |
4880 | } |
4881 | } | |
4c4b4cd2 | 4882 | return candidates[0].sym; |
aeb5907d JB |
4883 | } |
4884 | ||
4885 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
4886 | scope and in global scopes, or NULL if none. NAME is folded and | |
4887 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
4888 | choosing the first symbol if there are multiple choices. | |
4889 | *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol | |
4890 | table in which the symbol was found (in both cases, these | |
4891 | assignments occur only if the pointers are non-null). */ | |
4892 | struct symbol * | |
4893 | ada_lookup_symbol (const char *name, const struct block *block0, | |
4894 | domain_enum namespace, int *is_a_field_of_this, | |
4895 | struct symtab **symtab) | |
4896 | { | |
4897 | if (is_a_field_of_this != NULL) | |
4898 | *is_a_field_of_this = 0; | |
4899 | ||
4900 | return | |
4901 | ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)), | |
4902 | block0, namespace, NULL, symtab); | |
4c4b4cd2 | 4903 | } |
14f9c5c9 | 4904 | |
4c4b4cd2 PH |
4905 | static struct symbol * |
4906 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4907 | const char *linkage_name, |
4908 | const struct block *block, | |
4909 | const domain_enum domain, struct symtab **symtab) | |
4c4b4cd2 PH |
4910 | { |
4911 | if (linkage_name == NULL) | |
4912 | linkage_name = name; | |
76a01679 JB |
4913 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
4914 | NULL, symtab); | |
14f9c5c9 AS |
4915 | } |
4916 | ||
4917 | ||
4c4b4cd2 PH |
4918 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4919 | that is to be ignored for matching purposes. Suffixes of parallel | |
4920 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
4921 | are given by either of the regular expression: | |
4922 | ||
529cad9c PH |
4923 | (__[0-9]+)?[.$][0-9]+ [nested subprogram suffix, on platforms such |
4924 | as GNU/Linux] | |
4c4b4cd2 | 4925 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] |
529cad9c | 4926 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 4927 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
14f9c5c9 | 4928 | */ |
4c4b4cd2 | 4929 | |
14f9c5c9 | 4930 | static int |
d2e4a39e | 4931 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4932 | { |
4933 | int k; | |
4c4b4cd2 PH |
4934 | const char *matching; |
4935 | const int len = strlen (str); | |
4936 | ||
4937 | /* (__[0-9]+)?\.[0-9]+ */ | |
4938 | matching = str; | |
4939 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) | |
4940 | { | |
4941 | matching += 3; | |
4942 | while (isdigit (matching[0])) | |
4943 | matching += 1; | |
4944 | if (matching[0] == '\0') | |
4945 | return 1; | |
4946 | } | |
4947 | ||
529cad9c | 4948 | if (matching[0] == '.' || matching[0] == '$') |
4c4b4cd2 PH |
4949 | { |
4950 | matching += 1; | |
4951 | while (isdigit (matching[0])) | |
4952 | matching += 1; | |
4953 | if (matching[0] == '\0') | |
4954 | return 1; | |
4955 | } | |
4956 | ||
4957 | /* ___[0-9]+ */ | |
4958 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') | |
4959 | { | |
4960 | matching = str + 3; | |
4961 | while (isdigit (matching[0])) | |
4962 | matching += 1; | |
4963 | if (matching[0] == '\0') | |
4964 | return 1; | |
4965 | } | |
4966 | ||
529cad9c PH |
4967 | #if 0 |
4968 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
4969 | with a N at the end. Unfortunately, the compiler uses the same | |
4970 | convention for other internal types it creates. So treating | |
4971 | all entity names that end with an "N" as a name suffix causes | |
4972 | some regressions. For instance, consider the case of an enumerated | |
4973 | type. To support the 'Image attribute, it creates an array whose | |
4974 | name ends with N. | |
4975 | Having a single character like this as a suffix carrying some | |
4976 | information is a bit risky. Perhaps we should change the encoding | |
4977 | to be something like "_N" instead. In the meantime, do not do | |
4978 | the following check. */ | |
4979 | /* Protected Object Subprograms */ | |
4980 | if (len == 1 && str [0] == 'N') | |
4981 | return 1; | |
4982 | #endif | |
4983 | ||
4984 | /* _E[0-9]+[bs]$ */ | |
4985 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
4986 | { | |
4987 | matching = str + 3; | |
4988 | while (isdigit (matching[0])) | |
4989 | matching += 1; | |
4990 | if ((matching[0] == 'b' || matching[0] == 's') | |
4991 | && matching [1] == '\0') | |
4992 | return 1; | |
4993 | } | |
4994 | ||
4c4b4cd2 PH |
4995 | /* ??? We should not modify STR directly, as we are doing below. This |
4996 | is fine in this case, but may become problematic later if we find | |
4997 | that this alternative did not work, and want to try matching | |
4998 | another one from the begining of STR. Since we modified it, we | |
4999 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
5000 | if (str[0] == 'X') |
5001 | { | |
5002 | str += 1; | |
d2e4a39e | 5003 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
5004 | { |
5005 | if (str[0] != 'n' && str[0] != 'b') | |
5006 | return 0; | |
5007 | str += 1; | |
5008 | } | |
14f9c5c9 AS |
5009 | } |
5010 | if (str[0] == '\000') | |
5011 | return 1; | |
d2e4a39e | 5012 | if (str[0] == '_') |
14f9c5c9 AS |
5013 | { |
5014 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 5015 | return 0; |
d2e4a39e | 5016 | if (str[2] == '_') |
4c4b4cd2 | 5017 | { |
61ee279c PH |
5018 | if (strcmp (str + 3, "JM") == 0) |
5019 | return 1; | |
5020 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
5021 | the LJM suffix in favor of the JM one. But we will | |
5022 | still accept LJM as a valid suffix for a reasonable | |
5023 | amount of time, just to allow ourselves to debug programs | |
5024 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
5025 | if (strcmp (str + 3, "LJM") == 0) |
5026 | return 1; | |
5027 | if (str[3] != 'X') | |
5028 | return 0; | |
1265e4aa JB |
5029 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
5030 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
5031 | return 1; |
5032 | if (str[4] == 'R' && str[5] != 'T') | |
5033 | return 1; | |
5034 | return 0; | |
5035 | } | |
5036 | if (!isdigit (str[2])) | |
5037 | return 0; | |
5038 | for (k = 3; str[k] != '\0'; k += 1) | |
5039 | if (!isdigit (str[k]) && str[k] != '_') | |
5040 | return 0; | |
14f9c5c9 AS |
5041 | return 1; |
5042 | } | |
4c4b4cd2 | 5043 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 5044 | { |
4c4b4cd2 PH |
5045 | for (k = 2; str[k] != '\0'; k += 1) |
5046 | if (!isdigit (str[k]) && str[k] != '_') | |
5047 | return 0; | |
14f9c5c9 AS |
5048 | return 1; |
5049 | } | |
5050 | return 0; | |
5051 | } | |
d2e4a39e | 5052 | |
4c4b4cd2 PH |
5053 | /* Return nonzero if the given string starts with a dot ('.') |
5054 | followed by zero or more digits. | |
5055 | ||
5056 | Note: brobecker/2003-11-10: A forward declaration has not been | |
5057 | added at the begining of this file yet, because this function | |
5058 | is only used to work around a problem found during wild matching | |
5059 | when trying to match minimal symbol names against symbol names | |
5060 | obtained from dwarf-2 data. This function is therefore currently | |
5061 | only used in wild_match() and is likely to be deleted when the | |
5062 | problem in dwarf-2 is fixed. */ | |
5063 | ||
5064 | static int | |
5065 | is_dot_digits_suffix (const char *str) | |
5066 | { | |
5067 | if (str[0] != '.') | |
5068 | return 0; | |
5069 | ||
5070 | str++; | |
5071 | while (isdigit (str[0])) | |
5072 | str++; | |
5073 | return (str[0] == '\0'); | |
5074 | } | |
5075 | ||
aeb5907d JB |
5076 | /* Return non-zero if the string starting at NAME and ending before |
5077 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5078 | |
5079 | static int | |
5080 | is_valid_name_for_wild_match (const char *name0) | |
5081 | { | |
5082 | const char *decoded_name = ada_decode (name0); | |
5083 | int i; | |
5084 | ||
5085 | for (i=0; decoded_name[i] != '\0'; i++) | |
5086 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5087 | return 0; | |
5088 | ||
5089 | return 1; | |
5090 | } | |
5091 | ||
4c4b4cd2 PH |
5092 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and |
5093 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
5094 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
5095 | true). */ | |
5096 | ||
14f9c5c9 | 5097 | static int |
4c4b4cd2 | 5098 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 AS |
5099 | { |
5100 | int name_len; | |
4c4b4cd2 | 5101 | char *name; |
aeb5907d | 5102 | char *name_start; |
4c4b4cd2 PH |
5103 | char *patn; |
5104 | ||
5105 | /* FIXME: brobecker/2003-11-10: For some reason, the symbol name | |
5106 | stored in the symbol table for nested function names is sometimes | |
5107 | different from the name of the associated entity stored in | |
5108 | the dwarf-2 data: This is the case for nested subprograms, where | |
5109 | the minimal symbol name contains a trailing ".[:digit:]+" suffix, | |
5110 | while the symbol name from the dwarf-2 data does not. | |
5111 | ||
5112 | Although the DWARF-2 standard documents that entity names stored | |
5113 | in the dwarf-2 data should be identical to the name as seen in | |
5114 | the source code, GNAT takes a different approach as we already use | |
5115 | a special encoding mechanism to convey the information so that | |
5116 | a C debugger can still use the information generated to debug | |
5117 | Ada programs. A corollary is that the symbol names in the dwarf-2 | |
5118 | data should match the names found in the symbol table. I therefore | |
5119 | consider this issue as a compiler defect. | |
76a01679 | 5120 | |
4c4b4cd2 PH |
5121 | Until the compiler is properly fixed, we work-around the problem |
5122 | by ignoring such suffixes during the match. We do so by making | |
5123 | a copy of PATN0 and NAME0, and then by stripping such a suffix | |
5124 | if present. We then perform the match on the resulting strings. */ | |
5125 | { | |
5126 | char *dot; | |
5127 | name_len = strlen (name0); | |
5128 | ||
aeb5907d | 5129 | name = name_start = (char *) alloca ((name_len + 1) * sizeof (char)); |
4c4b4cd2 PH |
5130 | strcpy (name, name0); |
5131 | dot = strrchr (name, '.'); | |
5132 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
5133 | *dot = '\0'; | |
5134 | ||
5135 | patn = (char *) alloca ((patn_len + 1) * sizeof (char)); | |
5136 | strncpy (patn, patn0, patn_len); | |
5137 | patn[patn_len] = '\0'; | |
5138 | dot = strrchr (patn, '.'); | |
5139 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
5140 | { | |
5141 | *dot = '\0'; | |
5142 | patn_len = dot - patn; | |
5143 | } | |
5144 | } | |
5145 | ||
5146 | /* Now perform the wild match. */ | |
14f9c5c9 AS |
5147 | |
5148 | name_len = strlen (name); | |
4c4b4cd2 PH |
5149 | if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0 |
5150 | && strncmp (patn, name + 5, patn_len) == 0 | |
d2e4a39e | 5151 | && is_name_suffix (name + patn_len + 5)) |
14f9c5c9 AS |
5152 | return 1; |
5153 | ||
d2e4a39e | 5154 | while (name_len >= patn_len) |
14f9c5c9 | 5155 | { |
4c4b4cd2 PH |
5156 | if (strncmp (patn, name, patn_len) == 0 |
5157 | && is_name_suffix (name + patn_len)) | |
aeb5907d | 5158 | return (name == name_start || is_valid_name_for_wild_match (name0)); |
4c4b4cd2 PH |
5159 | do |
5160 | { | |
5161 | name += 1; | |
5162 | name_len -= 1; | |
5163 | } | |
d2e4a39e | 5164 | while (name_len > 0 |
4c4b4cd2 | 5165 | && name[0] != '.' && (name[0] != '_' || name[1] != '_')); |
14f9c5c9 | 5166 | if (name_len <= 0) |
4c4b4cd2 | 5167 | return 0; |
14f9c5c9 | 5168 | if (name[0] == '_') |
4c4b4cd2 PH |
5169 | { |
5170 | if (!islower (name[2])) | |
5171 | return 0; | |
5172 | name += 2; | |
5173 | name_len -= 2; | |
5174 | } | |
14f9c5c9 | 5175 | else |
4c4b4cd2 PH |
5176 | { |
5177 | if (!islower (name[1])) | |
5178 | return 0; | |
5179 | name += 1; | |
5180 | name_len -= 1; | |
5181 | } | |
96d887e8 PH |
5182 | } |
5183 | ||
5184 | return 0; | |
5185 | } | |
5186 | ||
5187 | ||
5188 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to | |
5189 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
5190 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
5191 | OBJFILE is the section containing BLOCK. | |
5192 | SYMTAB is recorded with each symbol added. */ | |
5193 | ||
5194 | static void | |
5195 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 5196 | struct block *block, const char *name, |
96d887e8 PH |
5197 | domain_enum domain, struct objfile *objfile, |
5198 | struct symtab *symtab, int wild) | |
5199 | { | |
5200 | struct dict_iterator iter; | |
5201 | int name_len = strlen (name); | |
5202 | /* A matching argument symbol, if any. */ | |
5203 | struct symbol *arg_sym; | |
5204 | /* Set true when we find a matching non-argument symbol. */ | |
5205 | int found_sym; | |
5206 | struct symbol *sym; | |
5207 | ||
5208 | arg_sym = NULL; | |
5209 | found_sym = 0; | |
5210 | if (wild) | |
5211 | { | |
5212 | struct symbol *sym; | |
5213 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5214 | { |
1265e4aa JB |
5215 | if (SYMBOL_DOMAIN (sym) == domain |
5216 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) | |
76a01679 JB |
5217 | { |
5218 | switch (SYMBOL_CLASS (sym)) | |
5219 | { | |
5220 | case LOC_ARG: | |
5221 | case LOC_LOCAL_ARG: | |
5222 | case LOC_REF_ARG: | |
5223 | case LOC_REGPARM: | |
5224 | case LOC_REGPARM_ADDR: | |
5225 | case LOC_BASEREG_ARG: | |
5226 | case LOC_COMPUTED_ARG: | |
5227 | arg_sym = sym; | |
5228 | break; | |
5229 | case LOC_UNRESOLVED: | |
5230 | continue; | |
5231 | default: | |
5232 | found_sym = 1; | |
5233 | add_defn_to_vec (obstackp, | |
5234 | fixup_symbol_section (sym, objfile), | |
5235 | block, symtab); | |
5236 | break; | |
5237 | } | |
5238 | } | |
5239 | } | |
96d887e8 PH |
5240 | } |
5241 | else | |
5242 | { | |
5243 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
5244 | { |
5245 | if (SYMBOL_DOMAIN (sym) == domain) | |
5246 | { | |
5247 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
5248 | if (cmp == 0 | |
5249 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
5250 | { | |
5251 | switch (SYMBOL_CLASS (sym)) | |
5252 | { | |
5253 | case LOC_ARG: | |
5254 | case LOC_LOCAL_ARG: | |
5255 | case LOC_REF_ARG: | |
5256 | case LOC_REGPARM: | |
5257 | case LOC_REGPARM_ADDR: | |
5258 | case LOC_BASEREG_ARG: | |
5259 | case LOC_COMPUTED_ARG: | |
5260 | arg_sym = sym; | |
5261 | break; | |
5262 | case LOC_UNRESOLVED: | |
5263 | break; | |
5264 | default: | |
5265 | found_sym = 1; | |
5266 | add_defn_to_vec (obstackp, | |
5267 | fixup_symbol_section (sym, objfile), | |
5268 | block, symtab); | |
5269 | break; | |
5270 | } | |
5271 | } | |
5272 | } | |
5273 | } | |
96d887e8 PH |
5274 | } |
5275 | ||
5276 | if (!found_sym && arg_sym != NULL) | |
5277 | { | |
76a01679 JB |
5278 | add_defn_to_vec (obstackp, |
5279 | fixup_symbol_section (arg_sym, objfile), | |
5280 | block, symtab); | |
96d887e8 PH |
5281 | } |
5282 | ||
5283 | if (!wild) | |
5284 | { | |
5285 | arg_sym = NULL; | |
5286 | found_sym = 0; | |
5287 | ||
5288 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
5289 | { |
5290 | if (SYMBOL_DOMAIN (sym) == domain) | |
5291 | { | |
5292 | int cmp; | |
5293 | ||
5294 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5295 | if (cmp == 0) | |
5296 | { | |
5297 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5298 | if (cmp == 0) | |
5299 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5300 | name_len); | |
5301 | } | |
5302 | ||
5303 | if (cmp == 0 | |
5304 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5305 | { | |
5306 | switch (SYMBOL_CLASS (sym)) | |
5307 | { | |
5308 | case LOC_ARG: | |
5309 | case LOC_LOCAL_ARG: | |
5310 | case LOC_REF_ARG: | |
5311 | case LOC_REGPARM: | |
5312 | case LOC_REGPARM_ADDR: | |
5313 | case LOC_BASEREG_ARG: | |
5314 | case LOC_COMPUTED_ARG: | |
5315 | arg_sym = sym; | |
5316 | break; | |
5317 | case LOC_UNRESOLVED: | |
5318 | break; | |
5319 | default: | |
5320 | found_sym = 1; | |
5321 | add_defn_to_vec (obstackp, | |
5322 | fixup_symbol_section (sym, objfile), | |
5323 | block, symtab); | |
5324 | break; | |
5325 | } | |
5326 | } | |
5327 | } | |
76a01679 | 5328 | } |
96d887e8 PH |
5329 | |
5330 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5331 | They aren't parameters, right? */ | |
5332 | if (!found_sym && arg_sym != NULL) | |
5333 | { | |
5334 | add_defn_to_vec (obstackp, | |
76a01679 JB |
5335 | fixup_symbol_section (arg_sym, objfile), |
5336 | block, symtab); | |
96d887e8 PH |
5337 | } |
5338 | } | |
5339 | } | |
5340 | \f | |
963a6417 | 5341 | /* Field Access */ |
96d887e8 | 5342 | |
73fb9985 JB |
5343 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5344 | for tagged types. */ | |
5345 | ||
5346 | static int | |
5347 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5348 | { | |
5349 | char *name; | |
5350 | ||
5351 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
5352 | return 0; | |
5353 | ||
5354 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
5355 | if (name == NULL) | |
5356 | return 0; | |
5357 | ||
5358 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5359 | } | |
5360 | ||
963a6417 PH |
5361 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5362 | to be invisible to users. */ | |
96d887e8 | 5363 | |
963a6417 PH |
5364 | int |
5365 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5366 | { |
963a6417 PH |
5367 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5368 | return 1; | |
73fb9985 JB |
5369 | |
5370 | /* Check the name of that field. */ | |
5371 | { | |
5372 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5373 | ||
5374 | /* Anonymous field names should not be printed. | |
5375 | brobecker/2007-02-20: I don't think this can actually happen | |
5376 | but we don't want to print the value of annonymous fields anyway. */ | |
5377 | if (name == NULL) | |
5378 | return 1; | |
5379 | ||
5380 | /* A field named "_parent" is internally generated by GNAT for | |
5381 | tagged types, and should not be printed either. */ | |
5382 | if (name[0] == '_' && strncmp (name, "_parent", 7) != 0) | |
5383 | return 1; | |
5384 | } | |
5385 | ||
5386 | /* If this is the dispatch table of a tagged type, then ignore. */ | |
5387 | if (ada_is_tagged_type (type, 1) | |
5388 | && ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num))) | |
5389 | return 1; | |
5390 | ||
5391 | /* Not a special field, so it should not be ignored. */ | |
5392 | return 0; | |
963a6417 | 5393 | } |
96d887e8 | 5394 | |
963a6417 PH |
5395 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
5396 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 5397 | |
963a6417 PH |
5398 | int |
5399 | ada_is_tagged_type (struct type *type, int refok) | |
5400 | { | |
5401 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
5402 | } | |
96d887e8 | 5403 | |
963a6417 | 5404 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5405 | |
963a6417 PH |
5406 | int |
5407 | ada_is_tag_type (struct type *type) | |
5408 | { | |
5409 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
5410 | return 0; | |
5411 | else | |
96d887e8 | 5412 | { |
963a6417 PH |
5413 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5414 | return (name != NULL | |
5415 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 5416 | } |
96d887e8 PH |
5417 | } |
5418 | ||
963a6417 | 5419 | /* The type of the tag on VAL. */ |
76a01679 | 5420 | |
963a6417 PH |
5421 | struct type * |
5422 | ada_tag_type (struct value *val) | |
96d887e8 | 5423 | { |
df407dfe | 5424 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 5425 | } |
96d887e8 | 5426 | |
963a6417 | 5427 | /* The value of the tag on VAL. */ |
96d887e8 | 5428 | |
963a6417 PH |
5429 | struct value * |
5430 | ada_value_tag (struct value *val) | |
5431 | { | |
03ee6b2e | 5432 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5433 | } |
5434 | ||
963a6417 PH |
5435 | /* The value of the tag on the object of type TYPE whose contents are |
5436 | saved at VALADDR, if it is non-null, or is at memory address | |
5437 | ADDRESS. */ | |
96d887e8 | 5438 | |
963a6417 | 5439 | static struct value * |
10a2c479 | 5440 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5441 | const gdb_byte *valaddr, |
963a6417 | 5442 | CORE_ADDR address) |
96d887e8 | 5443 | { |
963a6417 PH |
5444 | int tag_byte_offset, dummy1, dummy2; |
5445 | struct type *tag_type; | |
5446 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
52ce6436 | 5447 | NULL, NULL, NULL)) |
96d887e8 | 5448 | { |
fc1a4b47 | 5449 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
5450 | ? NULL |
5451 | : valaddr + tag_byte_offset); | |
963a6417 | 5452 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 5453 | |
963a6417 | 5454 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 5455 | } |
963a6417 PH |
5456 | return NULL; |
5457 | } | |
96d887e8 | 5458 | |
963a6417 PH |
5459 | static struct type * |
5460 | type_from_tag (struct value *tag) | |
5461 | { | |
5462 | const char *type_name = ada_tag_name (tag); | |
5463 | if (type_name != NULL) | |
5464 | return ada_find_any_type (ada_encode (type_name)); | |
5465 | return NULL; | |
5466 | } | |
96d887e8 | 5467 | |
963a6417 PH |
5468 | struct tag_args |
5469 | { | |
5470 | struct value *tag; | |
5471 | char *name; | |
5472 | }; | |
4c4b4cd2 | 5473 | |
529cad9c PH |
5474 | |
5475 | static int ada_tag_name_1 (void *); | |
5476 | static int ada_tag_name_2 (struct tag_args *); | |
5477 | ||
4c4b4cd2 PH |
5478 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* |
5479 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5480 | The value stored in ARGS->name is valid until the next call to | |
5481 | ada_tag_name_1. */ | |
5482 | ||
5483 | static int | |
5484 | ada_tag_name_1 (void *args0) | |
5485 | { | |
5486 | struct tag_args *args = (struct tag_args *) args0; | |
5487 | static char name[1024]; | |
76a01679 | 5488 | char *p; |
4c4b4cd2 PH |
5489 | struct value *val; |
5490 | args->name = NULL; | |
03ee6b2e | 5491 | val = ada_value_struct_elt (args->tag, "tsd", 1); |
529cad9c PH |
5492 | if (val == NULL) |
5493 | return ada_tag_name_2 (args); | |
03ee6b2e | 5494 | val = ada_value_struct_elt (val, "expanded_name", 1); |
529cad9c PH |
5495 | if (val == NULL) |
5496 | return 0; | |
5497 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5498 | for (p = name; *p != '\0'; p += 1) | |
5499 | if (isalpha (*p)) | |
5500 | *p = tolower (*p); | |
5501 | args->name = name; | |
5502 | return 0; | |
5503 | } | |
5504 | ||
5505 | /* Utility function for ada_tag_name_1 that tries the second | |
5506 | representation for the dispatch table (in which there is no | |
5507 | explicit 'tsd' field in the referent of the tag pointer, and instead | |
5508 | the tsd pointer is stored just before the dispatch table. */ | |
5509 | ||
5510 | static int | |
5511 | ada_tag_name_2 (struct tag_args *args) | |
5512 | { | |
5513 | struct type *info_type; | |
5514 | static char name[1024]; | |
5515 | char *p; | |
5516 | struct value *val, *valp; | |
5517 | ||
5518 | args->name = NULL; | |
5519 | info_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
5520 | if (info_type == NULL) | |
5521 | return 0; | |
5522 | info_type = lookup_pointer_type (lookup_pointer_type (info_type)); | |
5523 | valp = value_cast (info_type, args->tag); | |
5524 | if (valp == NULL) | |
5525 | return 0; | |
5526 | val = value_ind (value_add (valp, value_from_longest (builtin_type_int, -1))); | |
4c4b4cd2 PH |
5527 | if (val == NULL) |
5528 | return 0; | |
03ee6b2e | 5529 | val = ada_value_struct_elt (val, "expanded_name", 1); |
4c4b4cd2 PH |
5530 | if (val == NULL) |
5531 | return 0; | |
5532 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5533 | for (p = name; *p != '\0'; p += 1) | |
5534 | if (isalpha (*p)) | |
5535 | *p = tolower (*p); | |
5536 | args->name = name; | |
5537 | return 0; | |
5538 | } | |
5539 | ||
5540 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5541 | * a C string. */ | |
5542 | ||
5543 | const char * | |
5544 | ada_tag_name (struct value *tag) | |
5545 | { | |
5546 | struct tag_args args; | |
df407dfe | 5547 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 5548 | return NULL; |
76a01679 | 5549 | args.tag = tag; |
4c4b4cd2 PH |
5550 | args.name = NULL; |
5551 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5552 | return args.name; | |
5553 | } | |
5554 | ||
5555 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5556 | |
d2e4a39e | 5557 | struct type * |
ebf56fd3 | 5558 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5559 | { |
5560 | int i; | |
5561 | ||
61ee279c | 5562 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5563 | |
5564 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5565 | return NULL; | |
5566 | ||
5567 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5568 | if (ada_is_parent_field (type, i)) | |
61ee279c | 5569 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
14f9c5c9 AS |
5570 | |
5571 | return NULL; | |
5572 | } | |
5573 | ||
4c4b4cd2 PH |
5574 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5575 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5576 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5577 | |
5578 | int | |
ebf56fd3 | 5579 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5580 | { |
61ee279c | 5581 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5582 | return (name != NULL |
5583 | && (strncmp (name, "PARENT", 6) == 0 | |
5584 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5585 | } |
5586 | ||
4c4b4cd2 | 5587 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5588 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5589 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5590 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5591 | structures. */ |
14f9c5c9 AS |
5592 | |
5593 | int | |
ebf56fd3 | 5594 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5595 | { |
d2e4a39e AS |
5596 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5597 | return (name != NULL | |
4c4b4cd2 PH |
5598 | && (strncmp (name, "PARENT", 6) == 0 |
5599 | || strcmp (name, "REP") == 0 | |
5600 | || strncmp (name, "_parent", 7) == 0 | |
5601 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5602 | } |
5603 | ||
4c4b4cd2 PH |
5604 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5605 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5606 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5607 | |
5608 | int | |
ebf56fd3 | 5609 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5610 | { |
d2e4a39e | 5611 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5612 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5613 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5614 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5615 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5616 | } |
5617 | ||
5618 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5619 | whose discriminants are contained in the record type OUTER_TYPE, |
14f9c5c9 AS |
5620 | returns the type of the controlling discriminant for the variant. */ |
5621 | ||
d2e4a39e | 5622 | struct type * |
ebf56fd3 | 5623 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5624 | { |
d2e4a39e | 5625 | char *name = ada_variant_discrim_name (var_type); |
76a01679 | 5626 | struct type *type = |
4c4b4cd2 | 5627 | ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
5628 | if (type == NULL) |
5629 | return builtin_type_int; | |
5630 | else | |
5631 | return type; | |
5632 | } | |
5633 | ||
4c4b4cd2 | 5634 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5635 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5636 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5637 | |
5638 | int | |
ebf56fd3 | 5639 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5640 | { |
d2e4a39e | 5641 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5642 | return (name != NULL && name[0] == 'O'); |
5643 | } | |
5644 | ||
5645 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5646 | returns the name of the discriminant controlling the variant. |
5647 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5648 | |
d2e4a39e | 5649 | char * |
ebf56fd3 | 5650 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5651 | { |
d2e4a39e | 5652 | static char *result = NULL; |
14f9c5c9 | 5653 | static size_t result_len = 0; |
d2e4a39e AS |
5654 | struct type *type; |
5655 | const char *name; | |
5656 | const char *discrim_end; | |
5657 | const char *discrim_start; | |
14f9c5c9 AS |
5658 | |
5659 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5660 | type = TYPE_TARGET_TYPE (type0); | |
5661 | else | |
5662 | type = type0; | |
5663 | ||
5664 | name = ada_type_name (type); | |
5665 | ||
5666 | if (name == NULL || name[0] == '\000') | |
5667 | return ""; | |
5668 | ||
5669 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5670 | discrim_end -= 1) | |
5671 | { | |
4c4b4cd2 PH |
5672 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5673 | break; | |
14f9c5c9 AS |
5674 | } |
5675 | if (discrim_end == name) | |
5676 | return ""; | |
5677 | ||
d2e4a39e | 5678 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5679 | discrim_start -= 1) |
5680 | { | |
d2e4a39e | 5681 | if (discrim_start == name + 1) |
4c4b4cd2 | 5682 | return ""; |
76a01679 | 5683 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5684 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5685 | || discrim_start[-1] == '.') | |
5686 | break; | |
14f9c5c9 AS |
5687 | } |
5688 | ||
5689 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5690 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5691 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5692 | return result; |
5693 | } | |
5694 | ||
4c4b4cd2 PH |
5695 | /* Scan STR for a subtype-encoded number, beginning at position K. |
5696 | Put the position of the character just past the number scanned in | |
5697 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
5698 | Return 1 if there was a valid number at the given position, and 0 | |
5699 | otherwise. A "subtype-encoded" number consists of the absolute value | |
5700 | in decimal, followed by the letter 'm' to indicate a negative number. | |
5701 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
5702 | |
5703 | int | |
d2e4a39e | 5704 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
5705 | { |
5706 | ULONGEST RU; | |
5707 | ||
d2e4a39e | 5708 | if (!isdigit (str[k])) |
14f9c5c9 AS |
5709 | return 0; |
5710 | ||
4c4b4cd2 | 5711 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 5712 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 5713 | LONGEST. */ |
14f9c5c9 AS |
5714 | RU = 0; |
5715 | while (isdigit (str[k])) | |
5716 | { | |
d2e4a39e | 5717 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
5718 | k += 1; |
5719 | } | |
5720 | ||
d2e4a39e | 5721 | if (str[k] == 'm') |
14f9c5c9 AS |
5722 | { |
5723 | if (R != NULL) | |
4c4b4cd2 | 5724 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
5725 | k += 1; |
5726 | } | |
5727 | else if (R != NULL) | |
5728 | *R = (LONGEST) RU; | |
5729 | ||
4c4b4cd2 | 5730 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
5731 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
5732 | number representable as a LONGEST (although either would probably work | |
5733 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 5734 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
5735 | |
5736 | if (new_k != NULL) | |
5737 | *new_k = k; | |
5738 | return 1; | |
5739 | } | |
5740 | ||
4c4b4cd2 PH |
5741 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
5742 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
5743 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 5744 | |
d2e4a39e | 5745 | int |
ebf56fd3 | 5746 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 5747 | { |
d2e4a39e | 5748 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5749 | int p; |
5750 | ||
5751 | p = 0; | |
5752 | while (1) | |
5753 | { | |
d2e4a39e | 5754 | switch (name[p]) |
4c4b4cd2 PH |
5755 | { |
5756 | case '\0': | |
5757 | return 0; | |
5758 | case 'S': | |
5759 | { | |
5760 | LONGEST W; | |
5761 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
5762 | return 0; | |
5763 | if (val == W) | |
5764 | return 1; | |
5765 | break; | |
5766 | } | |
5767 | case 'R': | |
5768 | { | |
5769 | LONGEST L, U; | |
5770 | if (!ada_scan_number (name, p + 1, &L, &p) | |
5771 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
5772 | return 0; | |
5773 | if (val >= L && val <= U) | |
5774 | return 1; | |
5775 | break; | |
5776 | } | |
5777 | case 'O': | |
5778 | return 1; | |
5779 | default: | |
5780 | return 0; | |
5781 | } | |
5782 | } | |
5783 | } | |
5784 | ||
5785 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
5786 | ||
5787 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
5788 | ARG_TYPE, extract and return the value of one of its (non-static) | |
5789 | fields. FIELDNO says which field. Differs from value_primitive_field | |
5790 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 5791 | |
4c4b4cd2 | 5792 | static struct value * |
d2e4a39e | 5793 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 5794 | struct type *arg_type) |
14f9c5c9 | 5795 | { |
14f9c5c9 AS |
5796 | struct type *type; |
5797 | ||
61ee279c | 5798 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
5799 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
5800 | ||
4c4b4cd2 | 5801 | /* Handle packed fields. */ |
14f9c5c9 AS |
5802 | |
5803 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
5804 | { | |
5805 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
5806 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 5807 | |
0fd88904 | 5808 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
5809 | offset + bit_pos / 8, |
5810 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
5811 | } |
5812 | else | |
5813 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
5814 | } | |
5815 | ||
52ce6436 PH |
5816 | /* Find field with name NAME in object of type TYPE. If found, |
5817 | set the following for each argument that is non-null: | |
5818 | - *FIELD_TYPE_P to the field's type; | |
5819 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
5820 | an object of that type; | |
5821 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
5822 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
5823 | 0 otherwise; | |
5824 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
5825 | fields up to but not including the desired field, or by the total | |
5826 | number of fields if not found. A NULL value of NAME never | |
5827 | matches; the function just counts visible fields in this case. | |
5828 | ||
5829 | Returns 1 if found, 0 otherwise. */ | |
5830 | ||
4c4b4cd2 | 5831 | static int |
76a01679 JB |
5832 | find_struct_field (char *name, struct type *type, int offset, |
5833 | struct type **field_type_p, | |
52ce6436 PH |
5834 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
5835 | int *index_p) | |
4c4b4cd2 PH |
5836 | { |
5837 | int i; | |
5838 | ||
61ee279c | 5839 | type = ada_check_typedef (type); |
76a01679 | 5840 | |
52ce6436 PH |
5841 | if (field_type_p != NULL) |
5842 | *field_type_p = NULL; | |
5843 | if (byte_offset_p != NULL) | |
d5d6fca5 | 5844 | *byte_offset_p = 0; |
52ce6436 PH |
5845 | if (bit_offset_p != NULL) |
5846 | *bit_offset_p = 0; | |
5847 | if (bit_size_p != NULL) | |
5848 | *bit_size_p = 0; | |
5849 | ||
5850 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
5851 | { |
5852 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
5853 | int fld_offset = offset + bit_pos / 8; | |
5854 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 5855 | |
4c4b4cd2 PH |
5856 | if (t_field_name == NULL) |
5857 | continue; | |
5858 | ||
52ce6436 | 5859 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
5860 | { |
5861 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
52ce6436 PH |
5862 | if (field_type_p != NULL) |
5863 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
5864 | if (byte_offset_p != NULL) | |
5865 | *byte_offset_p = fld_offset; | |
5866 | if (bit_offset_p != NULL) | |
5867 | *bit_offset_p = bit_pos % 8; | |
5868 | if (bit_size_p != NULL) | |
5869 | *bit_size_p = bit_size; | |
76a01679 JB |
5870 | return 1; |
5871 | } | |
4c4b4cd2 PH |
5872 | else if (ada_is_wrapper_field (type, i)) |
5873 | { | |
52ce6436 PH |
5874 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
5875 | field_type_p, byte_offset_p, bit_offset_p, | |
5876 | bit_size_p, index_p)) | |
76a01679 JB |
5877 | return 1; |
5878 | } | |
4c4b4cd2 PH |
5879 | else if (ada_is_variant_part (type, i)) |
5880 | { | |
52ce6436 PH |
5881 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
5882 | fixed type?? */ | |
4c4b4cd2 | 5883 | int j; |
52ce6436 PH |
5884 | struct type *field_type |
5885 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 5886 | |
52ce6436 | 5887 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 5888 | { |
76a01679 JB |
5889 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
5890 | fld_offset | |
5891 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5892 | field_type_p, byte_offset_p, | |
52ce6436 | 5893 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 5894 | return 1; |
4c4b4cd2 PH |
5895 | } |
5896 | } | |
52ce6436 PH |
5897 | else if (index_p != NULL) |
5898 | *index_p += 1; | |
4c4b4cd2 PH |
5899 | } |
5900 | return 0; | |
5901 | } | |
5902 | ||
52ce6436 | 5903 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 5904 | |
52ce6436 PH |
5905 | static int |
5906 | num_visible_fields (struct type *type) | |
5907 | { | |
5908 | int n; | |
5909 | n = 0; | |
5910 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
5911 | return n; | |
5912 | } | |
14f9c5c9 | 5913 | |
4c4b4cd2 | 5914 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
5915 | and search in it assuming it has (class) type TYPE. |
5916 | If found, return value, else return NULL. | |
5917 | ||
4c4b4cd2 | 5918 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 5919 | |
4c4b4cd2 | 5920 | static struct value * |
d2e4a39e | 5921 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 5922 | struct type *type) |
14f9c5c9 AS |
5923 | { |
5924 | int i; | |
61ee279c | 5925 | type = ada_check_typedef (type); |
14f9c5c9 | 5926 | |
52ce6436 | 5927 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 AS |
5928 | { |
5929 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5930 | ||
5931 | if (t_field_name == NULL) | |
4c4b4cd2 | 5932 | continue; |
14f9c5c9 AS |
5933 | |
5934 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 5935 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
5936 | |
5937 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 5938 | { |
06d5cf63 JB |
5939 | struct value *v = /* Do not let indent join lines here. */ |
5940 | ada_search_struct_field (name, arg, | |
5941 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
5942 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
5943 | if (v != NULL) |
5944 | return v; | |
5945 | } | |
14f9c5c9 AS |
5946 | |
5947 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 5948 | { |
52ce6436 | 5949 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 5950 | int j; |
61ee279c | 5951 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5952 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
5953 | ||
52ce6436 | 5954 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 5955 | { |
06d5cf63 JB |
5956 | struct value *v = ada_search_struct_field /* Force line break. */ |
5957 | (name, arg, | |
5958 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5959 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
5960 | if (v != NULL) |
5961 | return v; | |
5962 | } | |
5963 | } | |
14f9c5c9 AS |
5964 | } |
5965 | return NULL; | |
5966 | } | |
d2e4a39e | 5967 | |
52ce6436 PH |
5968 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
5969 | int, struct type *); | |
5970 | ||
5971 | ||
5972 | /* Return field #INDEX in ARG, where the index is that returned by | |
5973 | * find_struct_field through its INDEX_P argument. Adjust the address | |
5974 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
5975 | * If found, return value, else return NULL. */ | |
5976 | ||
5977 | static struct value * | |
5978 | ada_index_struct_field (int index, struct value *arg, int offset, | |
5979 | struct type *type) | |
5980 | { | |
5981 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
5982 | } | |
5983 | ||
5984 | ||
5985 | /* Auxiliary function for ada_index_struct_field. Like | |
5986 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
5987 | * *INDEX_P. */ | |
5988 | ||
5989 | static struct value * | |
5990 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
5991 | struct type *type) | |
5992 | { | |
5993 | int i; | |
5994 | type = ada_check_typedef (type); | |
5995 | ||
5996 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5997 | { | |
5998 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
5999 | continue; | |
6000 | else if (ada_is_wrapper_field (type, i)) | |
6001 | { | |
6002 | struct value *v = /* Do not let indent join lines here. */ | |
6003 | ada_index_struct_field_1 (index_p, arg, | |
6004 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6005 | TYPE_FIELD_TYPE (type, i)); | |
6006 | if (v != NULL) | |
6007 | return v; | |
6008 | } | |
6009 | ||
6010 | else if (ada_is_variant_part (type, i)) | |
6011 | { | |
6012 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
6013 | find_struct_field. */ | |
6014 | error (_("Cannot assign this kind of variant record")); | |
6015 | } | |
6016 | else if (*index_p == 0) | |
6017 | return ada_value_primitive_field (arg, offset, i, type); | |
6018 | else | |
6019 | *index_p -= 1; | |
6020 | } | |
6021 | return NULL; | |
6022 | } | |
6023 | ||
4c4b4cd2 PH |
6024 | /* Given ARG, a value of type (pointer or reference to a)* |
6025 | structure/union, extract the component named NAME from the ultimate | |
6026 | target structure/union and return it as a value with its | |
6027 | appropriate type. If ARG is a pointer or reference and the field | |
6028 | is not packed, returns a reference to the field, otherwise the | |
6029 | value of the field (an lvalue if ARG is an lvalue). | |
14f9c5c9 | 6030 | |
4c4b4cd2 PH |
6031 | The routine searches for NAME among all members of the structure itself |
6032 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
6033 | (e.g., '_parent'). |
6034 | ||
03ee6b2e PH |
6035 | If NO_ERR, then simply return NULL in case of error, rather than |
6036 | calling error. */ | |
14f9c5c9 | 6037 | |
d2e4a39e | 6038 | struct value * |
03ee6b2e | 6039 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 6040 | { |
4c4b4cd2 | 6041 | struct type *t, *t1; |
d2e4a39e | 6042 | struct value *v; |
14f9c5c9 | 6043 | |
4c4b4cd2 | 6044 | v = NULL; |
df407dfe | 6045 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
6046 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6047 | { | |
6048 | t1 = TYPE_TARGET_TYPE (t); | |
6049 | if (t1 == NULL) | |
03ee6b2e | 6050 | goto BadValue; |
61ee279c | 6051 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6052 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 6053 | { |
994b9211 | 6054 | arg = coerce_ref (arg); |
76a01679 JB |
6055 | t = t1; |
6056 | } | |
4c4b4cd2 | 6057 | } |
14f9c5c9 | 6058 | |
4c4b4cd2 PH |
6059 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
6060 | { | |
6061 | t1 = TYPE_TARGET_TYPE (t); | |
6062 | if (t1 == NULL) | |
03ee6b2e | 6063 | goto BadValue; |
61ee279c | 6064 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6065 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
6066 | { |
6067 | arg = value_ind (arg); | |
6068 | t = t1; | |
6069 | } | |
4c4b4cd2 | 6070 | else |
76a01679 | 6071 | break; |
4c4b4cd2 | 6072 | } |
14f9c5c9 | 6073 | |
4c4b4cd2 | 6074 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 6075 | goto BadValue; |
14f9c5c9 | 6076 | |
4c4b4cd2 PH |
6077 | if (t1 == t) |
6078 | v = ada_search_struct_field (name, arg, 0, t); | |
6079 | else | |
6080 | { | |
6081 | int bit_offset, bit_size, byte_offset; | |
6082 | struct type *field_type; | |
6083 | CORE_ADDR address; | |
6084 | ||
76a01679 JB |
6085 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
6086 | address = value_as_address (arg); | |
4c4b4cd2 | 6087 | else |
0fd88904 | 6088 | address = unpack_pointer (t, value_contents (arg)); |
14f9c5c9 | 6089 | |
1ed6ede0 | 6090 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1); |
76a01679 JB |
6091 | if (find_struct_field (name, t1, 0, |
6092 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 6093 | &bit_size, NULL)) |
76a01679 JB |
6094 | { |
6095 | if (bit_size != 0) | |
6096 | { | |
714e53ab PH |
6097 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6098 | arg = ada_coerce_ref (arg); | |
6099 | else | |
6100 | arg = ada_value_ind (arg); | |
76a01679 JB |
6101 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
6102 | bit_offset, bit_size, | |
6103 | field_type); | |
6104 | } | |
6105 | else | |
6106 | v = value_from_pointer (lookup_reference_type (field_type), | |
6107 | address + byte_offset); | |
6108 | } | |
6109 | } | |
6110 | ||
03ee6b2e PH |
6111 | if (v != NULL || no_err) |
6112 | return v; | |
6113 | else | |
323e0a4a | 6114 | error (_("There is no member named %s."), name); |
14f9c5c9 | 6115 | |
03ee6b2e PH |
6116 | BadValue: |
6117 | if (no_err) | |
6118 | return NULL; | |
6119 | else | |
6120 | error (_("Attempt to extract a component of a value that is not a record.")); | |
14f9c5c9 AS |
6121 | } |
6122 | ||
6123 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
6124 | If DISPP is non-null, add its byte displacement from the beginning of a |
6125 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6126 | work for packed fields). |
6127 | ||
6128 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6129 | followed by "___". |
14f9c5c9 | 6130 | |
4c4b4cd2 PH |
6131 | TYPE can be either a struct or union. If REFOK, TYPE may also |
6132 | be a (pointer or reference)+ to a struct or union, and the | |
6133 | ultimate target type will be searched. | |
14f9c5c9 AS |
6134 | |
6135 | Looks recursively into variant clauses and parent types. | |
6136 | ||
4c4b4cd2 PH |
6137 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6138 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6139 | |
4c4b4cd2 | 6140 | static struct type * |
76a01679 JB |
6141 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
6142 | int noerr, int *dispp) | |
14f9c5c9 AS |
6143 | { |
6144 | int i; | |
6145 | ||
6146 | if (name == NULL) | |
6147 | goto BadName; | |
6148 | ||
76a01679 | 6149 | if (refok && type != NULL) |
4c4b4cd2 PH |
6150 | while (1) |
6151 | { | |
61ee279c | 6152 | type = ada_check_typedef (type); |
76a01679 JB |
6153 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
6154 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
6155 | break; | |
6156 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6157 | } |
14f9c5c9 | 6158 | |
76a01679 | 6159 | if (type == NULL |
1265e4aa JB |
6160 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
6161 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 6162 | { |
4c4b4cd2 | 6163 | if (noerr) |
76a01679 | 6164 | return NULL; |
4c4b4cd2 | 6165 | else |
76a01679 JB |
6166 | { |
6167 | target_terminal_ours (); | |
6168 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6169 | if (type == NULL) |
6170 | error (_("Type (null) is not a structure or union type")); | |
6171 | else | |
6172 | { | |
6173 | /* XXX: type_sprint */ | |
6174 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6175 | type_print (type, "", gdb_stderr, -1); | |
6176 | error (_(" is not a structure or union type")); | |
6177 | } | |
76a01679 | 6178 | } |
14f9c5c9 AS |
6179 | } |
6180 | ||
6181 | type = to_static_fixed_type (type); | |
6182 | ||
6183 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6184 | { | |
6185 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6186 | struct type *t; | |
6187 | int disp; | |
d2e4a39e | 6188 | |
14f9c5c9 | 6189 | if (t_field_name == NULL) |
4c4b4cd2 | 6190 | continue; |
14f9c5c9 AS |
6191 | |
6192 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
6193 | { |
6194 | if (dispp != NULL) | |
6195 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 6196 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 6197 | } |
14f9c5c9 AS |
6198 | |
6199 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
6200 | { |
6201 | disp = 0; | |
6202 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
6203 | 0, 1, &disp); | |
6204 | if (t != NULL) | |
6205 | { | |
6206 | if (dispp != NULL) | |
6207 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6208 | return t; | |
6209 | } | |
6210 | } | |
14f9c5c9 AS |
6211 | |
6212 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
6213 | { |
6214 | int j; | |
61ee279c | 6215 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6216 | |
6217 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
6218 | { | |
6219 | disp = 0; | |
6220 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
6221 | name, 0, 1, &disp); | |
6222 | if (t != NULL) | |
6223 | { | |
6224 | if (dispp != NULL) | |
6225 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6226 | return t; | |
6227 | } | |
6228 | } | |
6229 | } | |
14f9c5c9 AS |
6230 | |
6231 | } | |
6232 | ||
6233 | BadName: | |
d2e4a39e | 6234 | if (!noerr) |
14f9c5c9 AS |
6235 | { |
6236 | target_terminal_ours (); | |
6237 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6238 | if (name == NULL) |
6239 | { | |
6240 | /* XXX: type_sprint */ | |
6241 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6242 | type_print (type, "", gdb_stderr, -1); | |
6243 | error (_(" has no component named <null>")); | |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | /* XXX: type_sprint */ | |
6248 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6249 | type_print (type, "", gdb_stderr, -1); | |
6250 | error (_(" has no component named %s"), name); | |
6251 | } | |
14f9c5c9 AS |
6252 | } |
6253 | ||
6254 | return NULL; | |
6255 | } | |
6256 | ||
6257 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), | |
6258 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
6259 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
6260 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 6261 | |
d2e4a39e | 6262 | int |
ebf56fd3 | 6263 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 6264 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
6265 | { |
6266 | int others_clause; | |
6267 | int i; | |
6268 | int disp; | |
d2e4a39e AS |
6269 | struct type *discrim_type; |
6270 | char *discrim_name = ada_variant_discrim_name (var_type); | |
14f9c5c9 AS |
6271 | LONGEST discrim_val; |
6272 | ||
6273 | disp = 0; | |
d2e4a39e | 6274 | discrim_type = |
4c4b4cd2 | 6275 | ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp); |
14f9c5c9 AS |
6276 | if (discrim_type == NULL) |
6277 | return -1; | |
6278 | discrim_val = unpack_long (discrim_type, outer_valaddr + disp); | |
6279 | ||
6280 | others_clause = -1; | |
6281 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
6282 | { | |
6283 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 6284 | others_clause = i; |
14f9c5c9 | 6285 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 6286 | return i; |
14f9c5c9 AS |
6287 | } |
6288 | ||
6289 | return others_clause; | |
6290 | } | |
d2e4a39e | 6291 | \f |
14f9c5c9 AS |
6292 | |
6293 | ||
4c4b4cd2 | 6294 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
6295 | |
6296 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
6297 | (i.e., a size that is not statically recorded in the debugging | |
6298 | data) does not accurately reflect the size or layout of the value. | |
6299 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 6300 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
6301 | |
6302 | /* There is a subtle and tricky problem here. In general, we cannot | |
6303 | determine the size of dynamic records without its data. However, | |
6304 | the 'struct value' data structure, which GDB uses to represent | |
6305 | quantities in the inferior process (the target), requires the size | |
6306 | of the type at the time of its allocation in order to reserve space | |
6307 | for GDB's internal copy of the data. That's why the | |
6308 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 6309 | rather than struct value*s. |
14f9c5c9 AS |
6310 | |
6311 | However, GDB's internal history variables ($1, $2, etc.) are | |
6312 | struct value*s containing internal copies of the data that are not, in | |
6313 | general, the same as the data at their corresponding addresses in | |
6314 | the target. Fortunately, the types we give to these values are all | |
6315 | conventional, fixed-size types (as per the strategy described | |
6316 | above), so that we don't usually have to perform the | |
6317 | 'to_fixed_xxx_type' conversions to look at their values. | |
6318 | Unfortunately, there is one exception: if one of the internal | |
6319 | history variables is an array whose elements are unconstrained | |
6320 | records, then we will need to create distinct fixed types for each | |
6321 | element selected. */ | |
6322 | ||
6323 | /* The upshot of all of this is that many routines take a (type, host | |
6324 | address, target address) triple as arguments to represent a value. | |
6325 | The host address, if non-null, is supposed to contain an internal | |
6326 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 6327 | target at the target address. */ |
14f9c5c9 AS |
6328 | |
6329 | /* Assuming that VAL0 represents a pointer value, the result of | |
6330 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 6331 | dynamic-sized types. */ |
14f9c5c9 | 6332 | |
d2e4a39e AS |
6333 | struct value * |
6334 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 6335 | { |
d2e4a39e | 6336 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 6337 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
6338 | } |
6339 | ||
6340 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
6341 | qualifiers on VAL0. */ |
6342 | ||
d2e4a39e AS |
6343 | static struct value * |
6344 | ada_coerce_ref (struct value *val0) | |
6345 | { | |
df407dfe | 6346 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
6347 | { |
6348 | struct value *val = val0; | |
994b9211 | 6349 | val = coerce_ref (val); |
d2e4a39e | 6350 | val = unwrap_value (val); |
4c4b4cd2 | 6351 | return ada_to_fixed_value (val); |
d2e4a39e AS |
6352 | } |
6353 | else | |
14f9c5c9 AS |
6354 | return val0; |
6355 | } | |
6356 | ||
6357 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 6358 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
6359 | |
6360 | static unsigned int | |
ebf56fd3 | 6361 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
6362 | { |
6363 | return (off + alignment - 1) & ~(alignment - 1); | |
6364 | } | |
6365 | ||
4c4b4cd2 | 6366 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
6367 | |
6368 | static unsigned int | |
ebf56fd3 | 6369 | field_alignment (struct type *type, int f) |
14f9c5c9 | 6370 | { |
d2e4a39e | 6371 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 6372 | int len; |
14f9c5c9 AS |
6373 | int align_offset; |
6374 | ||
64a1bf19 JB |
6375 | /* The field name should never be null, unless the debugging information |
6376 | is somehow malformed. In this case, we assume the field does not | |
6377 | require any alignment. */ | |
6378 | if (name == NULL) | |
6379 | return 1; | |
6380 | ||
6381 | len = strlen (name); | |
6382 | ||
4c4b4cd2 PH |
6383 | if (!isdigit (name[len - 1])) |
6384 | return 1; | |
14f9c5c9 | 6385 | |
d2e4a39e | 6386 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
6387 | align_offset = len - 2; |
6388 | else | |
6389 | align_offset = len - 1; | |
6390 | ||
4c4b4cd2 | 6391 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
6392 | return TARGET_CHAR_BIT; |
6393 | ||
4c4b4cd2 PH |
6394 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
6395 | } | |
6396 | ||
6397 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
6398 | ||
6399 | struct symbol * | |
6400 | ada_find_any_symbol (const char *name) | |
6401 | { | |
6402 | struct symbol *sym; | |
6403 | ||
6404 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
6405 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
6406 | return sym; | |
6407 | ||
6408 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
6409 | return sym; | |
14f9c5c9 AS |
6410 | } |
6411 | ||
6412 | /* Find a type named NAME. Ignores ambiguity. */ | |
4c4b4cd2 | 6413 | |
d2e4a39e | 6414 | struct type * |
ebf56fd3 | 6415 | ada_find_any_type (const char *name) |
14f9c5c9 | 6416 | { |
4c4b4cd2 | 6417 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 6418 | |
14f9c5c9 AS |
6419 | if (sym != NULL) |
6420 | return SYMBOL_TYPE (sym); | |
6421 | ||
6422 | return NULL; | |
6423 | } | |
6424 | ||
aeb5907d JB |
6425 | /* Given NAME and an associated BLOCK, search all symbols for |
6426 | NAME suffixed with "___XR", which is the ``renaming'' symbol | |
4c4b4cd2 PH |
6427 | associated to NAME. Return this symbol if found, return |
6428 | NULL otherwise. */ | |
6429 | ||
6430 | struct symbol * | |
6431 | ada_find_renaming_symbol (const char *name, struct block *block) | |
aeb5907d JB |
6432 | { |
6433 | struct symbol *sym; | |
6434 | ||
6435 | sym = find_old_style_renaming_symbol (name, block); | |
6436 | ||
6437 | if (sym != NULL) | |
6438 | return sym; | |
6439 | ||
6440 | /* Not right yet. FIXME pnh 7/20/2007. */ | |
6441 | sym = ada_find_any_symbol (name); | |
6442 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) | |
6443 | return sym; | |
6444 | else | |
6445 | return NULL; | |
6446 | } | |
6447 | ||
6448 | static struct symbol * | |
6449 | find_old_style_renaming_symbol (const char *name, struct block *block) | |
4c4b4cd2 PH |
6450 | { |
6451 | const struct symbol *function_sym = block_function (block); | |
6452 | char *rename; | |
6453 | ||
6454 | if (function_sym != NULL) | |
6455 | { | |
6456 | /* If the symbol is defined inside a function, NAME is not fully | |
6457 | qualified. This means we need to prepend the function name | |
6458 | as well as adding the ``___XR'' suffix to build the name of | |
6459 | the associated renaming symbol. */ | |
6460 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
529cad9c PH |
6461 | /* Function names sometimes contain suffixes used |
6462 | for instance to qualify nested subprograms. When building | |
6463 | the XR type name, we need to make sure that this suffix is | |
6464 | not included. So do not include any suffix in the function | |
6465 | name length below. */ | |
6466 | const int function_name_len = ada_name_prefix_len (function_name); | |
76a01679 JB |
6467 | const int rename_len = function_name_len + 2 /* "__" */ |
6468 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 6469 | |
529cad9c PH |
6470 | /* Strip the suffix if necessary. */ |
6471 | function_name[function_name_len] = '\0'; | |
6472 | ||
4c4b4cd2 PH |
6473 | /* Library-level functions are a special case, as GNAT adds |
6474 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 6475 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
6476 | have this prefix, so we need to skip this prefix if present. */ |
6477 | if (function_name_len > 5 /* "_ada_" */ | |
6478 | && strstr (function_name, "_ada_") == function_name) | |
6479 | function_name = function_name + 5; | |
6480 | ||
6481 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6482 | sprintf (rename, "%s__%s___XR", function_name, name); | |
6483 | } | |
6484 | else | |
6485 | { | |
6486 | const int rename_len = strlen (name) + 6; | |
6487 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6488 | sprintf (rename, "%s___XR", name); | |
6489 | } | |
6490 | ||
6491 | return ada_find_any_symbol (rename); | |
6492 | } | |
6493 | ||
14f9c5c9 | 6494 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 6495 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 6496 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
6497 | otherwise return 0. */ |
6498 | ||
14f9c5c9 | 6499 | int |
d2e4a39e | 6500 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
6501 | { |
6502 | if (type1 == NULL) | |
6503 | return 1; | |
6504 | else if (type0 == NULL) | |
6505 | return 0; | |
6506 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
6507 | return 1; | |
6508 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
6509 | return 0; | |
4c4b4cd2 PH |
6510 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
6511 | return 1; | |
14f9c5c9 AS |
6512 | else if (ada_is_packed_array_type (type0)) |
6513 | return 1; | |
4c4b4cd2 PH |
6514 | else if (ada_is_array_descriptor_type (type0) |
6515 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 6516 | return 1; |
aeb5907d JB |
6517 | else |
6518 | { | |
6519 | const char *type0_name = type_name_no_tag (type0); | |
6520 | const char *type1_name = type_name_no_tag (type1); | |
6521 | ||
6522 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
6523 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
6524 | return 1; | |
6525 | } | |
14f9c5c9 AS |
6526 | return 0; |
6527 | } | |
6528 | ||
6529 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
6530 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
6531 | ||
d2e4a39e AS |
6532 | char * |
6533 | ada_type_name (struct type *type) | |
14f9c5c9 | 6534 | { |
d2e4a39e | 6535 | if (type == NULL) |
14f9c5c9 AS |
6536 | return NULL; |
6537 | else if (TYPE_NAME (type) != NULL) | |
6538 | return TYPE_NAME (type); | |
6539 | else | |
6540 | return TYPE_TAG_NAME (type); | |
6541 | } | |
6542 | ||
6543 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 6544 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 6545 | |
d2e4a39e | 6546 | struct type * |
ebf56fd3 | 6547 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 6548 | { |
d2e4a39e | 6549 | static char *name; |
14f9c5c9 | 6550 | static size_t name_len = 0; |
14f9c5c9 | 6551 | int len; |
d2e4a39e AS |
6552 | char *typename = ada_type_name (type); |
6553 | ||
14f9c5c9 AS |
6554 | if (typename == NULL) |
6555 | return NULL; | |
6556 | ||
6557 | len = strlen (typename); | |
6558 | ||
d2e4a39e | 6559 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
6560 | |
6561 | strcpy (name, typename); | |
6562 | strcpy (name + len, suffix); | |
6563 | ||
6564 | return ada_find_any_type (name); | |
6565 | } | |
6566 | ||
6567 | ||
6568 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 6569 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 6570 | |
d2e4a39e AS |
6571 | static struct type * |
6572 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 6573 | { |
61ee279c | 6574 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6575 | |
6576 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 6577 | || ada_type_name (type) == NULL) |
14f9c5c9 | 6578 | return NULL; |
d2e4a39e | 6579 | else |
14f9c5c9 AS |
6580 | { |
6581 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
6582 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
6583 | return type; | |
14f9c5c9 | 6584 | else |
4c4b4cd2 | 6585 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
6586 | } |
6587 | } | |
6588 | ||
6589 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 6590 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 6591 | |
d2e4a39e AS |
6592 | static int |
6593 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
6594 | { |
6595 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 6596 | return name != NULL |
14f9c5c9 AS |
6597 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
6598 | && strstr (name, "___XVL") != NULL; | |
6599 | } | |
6600 | ||
4c4b4cd2 PH |
6601 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
6602 | represent a variant record type. */ | |
14f9c5c9 | 6603 | |
d2e4a39e | 6604 | static int |
4c4b4cd2 | 6605 | variant_field_index (struct type *type) |
14f9c5c9 AS |
6606 | { |
6607 | int f; | |
6608 | ||
4c4b4cd2 PH |
6609 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
6610 | return -1; | |
6611 | ||
6612 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
6613 | { | |
6614 | if (ada_is_variant_part (type, f)) | |
6615 | return f; | |
6616 | } | |
6617 | return -1; | |
14f9c5c9 AS |
6618 | } |
6619 | ||
4c4b4cd2 PH |
6620 | /* A record type with no fields. */ |
6621 | ||
d2e4a39e AS |
6622 | static struct type * |
6623 | empty_record (struct objfile *objfile) | |
14f9c5c9 | 6624 | { |
d2e4a39e | 6625 | struct type *type = alloc_type (objfile); |
14f9c5c9 AS |
6626 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
6627 | TYPE_NFIELDS (type) = 0; | |
6628 | TYPE_FIELDS (type) = NULL; | |
6629 | TYPE_NAME (type) = "<empty>"; | |
6630 | TYPE_TAG_NAME (type) = NULL; | |
6631 | TYPE_FLAGS (type) = 0; | |
6632 | TYPE_LENGTH (type) = 0; | |
6633 | return type; | |
6634 | } | |
6635 | ||
6636 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
6637 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
6638 | the beginning of this section) VAL according to GNAT conventions. | |
6639 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 6640 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
6641 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
6642 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 6643 | of the variant. |
14f9c5c9 | 6644 | |
4c4b4cd2 PH |
6645 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
6646 | length are not statically known are discarded. As a consequence, | |
6647 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6648 | ||
6649 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6650 | variants occupy whole numbers of bytes. However, they need not be | |
6651 | byte-aligned. */ | |
6652 | ||
6653 | struct type * | |
10a2c479 | 6654 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 6655 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
6656 | CORE_ADDR address, struct value *dval0, |
6657 | int keep_dynamic_fields) | |
14f9c5c9 | 6658 | { |
d2e4a39e AS |
6659 | struct value *mark = value_mark (); |
6660 | struct value *dval; | |
6661 | struct type *rtype; | |
14f9c5c9 | 6662 | int nfields, bit_len; |
4c4b4cd2 | 6663 | int variant_field; |
14f9c5c9 | 6664 | long off; |
4c4b4cd2 | 6665 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6666 | int f; |
6667 | ||
4c4b4cd2 PH |
6668 | /* Compute the number of fields in this record type that are going |
6669 | to be processed: unless keep_dynamic_fields, this includes only | |
6670 | fields whose position and length are static will be processed. */ | |
6671 | if (keep_dynamic_fields) | |
6672 | nfields = TYPE_NFIELDS (type); | |
6673 | else | |
6674 | { | |
6675 | nfields = 0; | |
76a01679 | 6676 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6677 | && !ada_is_variant_part (type, nfields) |
6678 | && !is_dynamic_field (type, nfields)) | |
6679 | nfields++; | |
6680 | } | |
6681 | ||
14f9c5c9 AS |
6682 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6683 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
6684 | INIT_CPLUS_SPECIFIC (rtype); | |
6685 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6686 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6687 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6688 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6689 | TYPE_NAME (rtype) = ada_type_name (type); | |
6690 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6691 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6692 | |
d2e4a39e AS |
6693 | off = 0; |
6694 | bit_len = 0; | |
4c4b4cd2 PH |
6695 | variant_field = -1; |
6696 | ||
14f9c5c9 AS |
6697 | for (f = 0; f < nfields; f += 1) |
6698 | { | |
6c038f32 PH |
6699 | off = align_value (off, field_alignment (type, f)) |
6700 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 6701 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 6702 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 6703 | |
d2e4a39e | 6704 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
6705 | { |
6706 | variant_field = f; | |
6707 | fld_bit_len = bit_incr = 0; | |
6708 | } | |
14f9c5c9 | 6709 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 PH |
6710 | { |
6711 | if (dval0 == NULL) | |
6712 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6713 | else | |
6714 | dval = dval0; | |
6715 | ||
1ed6ede0 JB |
6716 | /* Get the fixed type of the field. Note that, in this case, we |
6717 | do not want to get the real type out of the tag: if the current | |
6718 | field is the parent part of a tagged record, we will get the | |
6719 | tag of the object. Clearly wrong: the real type of the parent | |
6720 | is not the real type of the child. We would end up in an infinite | |
6721 | loop. */ | |
4c4b4cd2 PH |
6722 | TYPE_FIELD_TYPE (rtype, f) = |
6723 | ada_to_fixed_type | |
6724 | (ada_get_base_type | |
6725 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), | |
6726 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
1ed6ede0 | 6727 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval, 0); |
4c4b4cd2 PH |
6728 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
6729 | bit_incr = fld_bit_len = | |
6730 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
6731 | } | |
14f9c5c9 | 6732 | else |
4c4b4cd2 PH |
6733 | { |
6734 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
6735 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6736 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
6737 | bit_incr = fld_bit_len = | |
6738 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
6739 | else | |
6740 | bit_incr = fld_bit_len = | |
6741 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
6742 | } | |
14f9c5c9 | 6743 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 6744 | bit_len = off + fld_bit_len; |
14f9c5c9 | 6745 | off += bit_incr; |
4c4b4cd2 PH |
6746 | TYPE_LENGTH (rtype) = |
6747 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 6748 | } |
4c4b4cd2 PH |
6749 | |
6750 | /* We handle the variant part, if any, at the end because of certain | |
6751 | odd cases in which it is re-ordered so as NOT the last field of | |
6752 | the record. This can happen in the presence of representation | |
6753 | clauses. */ | |
6754 | if (variant_field >= 0) | |
6755 | { | |
6756 | struct type *branch_type; | |
6757 | ||
6758 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
6759 | ||
6760 | if (dval0 == NULL) | |
6761 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6762 | else | |
6763 | dval = dval0; | |
6764 | ||
6765 | branch_type = | |
6766 | to_fixed_variant_branch_type | |
6767 | (TYPE_FIELD_TYPE (type, variant_field), | |
6768 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6769 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6770 | if (branch_type == NULL) | |
6771 | { | |
6772 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
6773 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
6774 | TYPE_NFIELDS (rtype) -= 1; | |
6775 | } | |
6776 | else | |
6777 | { | |
6778 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
6779 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6780 | fld_bit_len = | |
6781 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
6782 | TARGET_CHAR_BIT; | |
6783 | if (off + fld_bit_len > bit_len) | |
6784 | bit_len = off + fld_bit_len; | |
6785 | TYPE_LENGTH (rtype) = | |
6786 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
6787 | } | |
6788 | } | |
6789 | ||
714e53ab PH |
6790 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
6791 | should contain the alignment of that record, which should be a strictly | |
6792 | positive value. If null or negative, then something is wrong, most | |
6793 | probably in the debug info. In that case, we don't round up the size | |
6794 | of the resulting type. If this record is not part of another structure, | |
6795 | the current RTYPE length might be good enough for our purposes. */ | |
6796 | if (TYPE_LENGTH (type) <= 0) | |
6797 | { | |
323e0a4a AC |
6798 | if (TYPE_NAME (rtype)) |
6799 | warning (_("Invalid type size for `%s' detected: %d."), | |
6800 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
6801 | else | |
6802 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
6803 | TYPE_LENGTH (type)); | |
714e53ab PH |
6804 | } |
6805 | else | |
6806 | { | |
6807 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
6808 | TYPE_LENGTH (type)); | |
6809 | } | |
14f9c5c9 AS |
6810 | |
6811 | value_free_to_mark (mark); | |
d2e4a39e | 6812 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 6813 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
6814 | return rtype; |
6815 | } | |
6816 | ||
4c4b4cd2 PH |
6817 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
6818 | of 1. */ | |
14f9c5c9 | 6819 | |
d2e4a39e | 6820 | static struct type * |
fc1a4b47 | 6821 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
6822 | CORE_ADDR address, struct value *dval0) |
6823 | { | |
6824 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
6825 | address, dval0, 1); | |
6826 | } | |
6827 | ||
6828 | /* An ordinary record type in which ___XVL-convention fields and | |
6829 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
6830 | static approximations, containing all possible fields. Uses | |
6831 | no runtime values. Useless for use in values, but that's OK, | |
6832 | since the results are used only for type determinations. Works on both | |
6833 | structs and unions. Representation note: to save space, we memorize | |
6834 | the result of this function in the TYPE_TARGET_TYPE of the | |
6835 | template type. */ | |
6836 | ||
6837 | static struct type * | |
6838 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
6839 | { |
6840 | struct type *type; | |
6841 | int nfields; | |
6842 | int f; | |
6843 | ||
4c4b4cd2 PH |
6844 | if (TYPE_TARGET_TYPE (type0) != NULL) |
6845 | return TYPE_TARGET_TYPE (type0); | |
6846 | ||
6847 | nfields = TYPE_NFIELDS (type0); | |
6848 | type = type0; | |
14f9c5c9 AS |
6849 | |
6850 | for (f = 0; f < nfields; f += 1) | |
6851 | { | |
61ee279c | 6852 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 6853 | struct type *new_type; |
14f9c5c9 | 6854 | |
4c4b4cd2 PH |
6855 | if (is_dynamic_field (type0, f)) |
6856 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 6857 | else |
f192137b | 6858 | new_type = static_unwrap_type (field_type); |
4c4b4cd2 PH |
6859 | if (type == type0 && new_type != field_type) |
6860 | { | |
6861 | TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); | |
6862 | TYPE_CODE (type) = TYPE_CODE (type0); | |
6863 | INIT_CPLUS_SPECIFIC (type); | |
6864 | TYPE_NFIELDS (type) = nfields; | |
6865 | TYPE_FIELDS (type) = (struct field *) | |
6866 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
6867 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
6868 | sizeof (struct field) * nfields); | |
6869 | TYPE_NAME (type) = ada_type_name (type0); | |
6870 | TYPE_TAG_NAME (type) = NULL; | |
6871 | TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; | |
6872 | TYPE_LENGTH (type) = 0; | |
6873 | } | |
6874 | TYPE_FIELD_TYPE (type, f) = new_type; | |
6875 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 6876 | } |
14f9c5c9 AS |
6877 | return type; |
6878 | } | |
6879 | ||
4c4b4cd2 PH |
6880 | /* Given an object of type TYPE whose contents are at VALADDR and |
6881 | whose address in memory is ADDRESS, returns a revision of TYPE -- | |
6882 | a non-dynamic-sized record with a variant part -- in which | |
6883 | the variant part is replaced with the appropriate branch. Looks | |
6884 | for discriminant values in DVAL0, which can be NULL if the record | |
6885 | contains the necessary discriminant values. */ | |
6886 | ||
d2e4a39e | 6887 | static struct type * |
fc1a4b47 | 6888 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 6889 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 6890 | { |
d2e4a39e | 6891 | struct value *mark = value_mark (); |
4c4b4cd2 | 6892 | struct value *dval; |
d2e4a39e | 6893 | struct type *rtype; |
14f9c5c9 AS |
6894 | struct type *branch_type; |
6895 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 6896 | int variant_field = variant_field_index (type); |
14f9c5c9 | 6897 | |
4c4b4cd2 | 6898 | if (variant_field == -1) |
14f9c5c9 AS |
6899 | return type; |
6900 | ||
4c4b4cd2 PH |
6901 | if (dval0 == NULL) |
6902 | dval = value_from_contents_and_address (type, valaddr, address); | |
6903 | else | |
6904 | dval = dval0; | |
6905 | ||
14f9c5c9 AS |
6906 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6907 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
4c4b4cd2 PH |
6908 | INIT_CPLUS_SPECIFIC (rtype); |
6909 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
6910 | TYPE_FIELDS (rtype) = |
6911 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
6912 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 6913 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
6914 | TYPE_NAME (rtype) = ada_type_name (type); |
6915 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6916 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6917 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
6918 | ||
4c4b4cd2 PH |
6919 | branch_type = to_fixed_variant_branch_type |
6920 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 6921 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
6922 | TYPE_FIELD_BITPOS (type, variant_field) |
6923 | / TARGET_CHAR_BIT), | |
d2e4a39e | 6924 | cond_offset_target (address, |
4c4b4cd2 PH |
6925 | TYPE_FIELD_BITPOS (type, variant_field) |
6926 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 6927 | if (branch_type == NULL) |
14f9c5c9 | 6928 | { |
4c4b4cd2 PH |
6929 | int f; |
6930 | for (f = variant_field + 1; f < nfields; f += 1) | |
6931 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 6932 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
6933 | } |
6934 | else | |
6935 | { | |
4c4b4cd2 PH |
6936 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
6937 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6938 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 6939 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 6940 | } |
4c4b4cd2 | 6941 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 6942 | |
4c4b4cd2 | 6943 | value_free_to_mark (mark); |
14f9c5c9 AS |
6944 | return rtype; |
6945 | } | |
6946 | ||
6947 | /* An ordinary record type (with fixed-length fields) that describes | |
6948 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
6949 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
6950 | should be in DVAL, a record value; it may be NULL if the object |
6951 | at ADDR itself contains any necessary discriminant values. | |
6952 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
6953 | values from the record are needed. Except in the case that DVAL, | |
6954 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
6955 | unchecked) is replaced by a particular branch of the variant. | |
6956 | ||
6957 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
6958 | is questionable and may be removed. It can arise during the | |
6959 | processing of an unconstrained-array-of-record type where all the | |
6960 | variant branches have exactly the same size. This is because in | |
6961 | such cases, the compiler does not bother to use the XVS convention | |
6962 | when encoding the record. I am currently dubious of this | |
6963 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 6964 | |
d2e4a39e | 6965 | static struct type * |
fc1a4b47 | 6966 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 6967 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 6968 | { |
d2e4a39e | 6969 | struct type *templ_type; |
14f9c5c9 | 6970 | |
4c4b4cd2 PH |
6971 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
6972 | return type0; | |
6973 | ||
d2e4a39e | 6974 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
6975 | |
6976 | if (templ_type != NULL) | |
6977 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
6978 | else if (variant_field_index (type0) >= 0) |
6979 | { | |
6980 | if (dval == NULL && valaddr == NULL && address == 0) | |
6981 | return type0; | |
6982 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
6983 | dval); | |
6984 | } | |
14f9c5c9 AS |
6985 | else |
6986 | { | |
4c4b4cd2 | 6987 | TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6988 | return type0; |
6989 | } | |
6990 | ||
6991 | } | |
6992 | ||
6993 | /* An ordinary record type (with fixed-length fields) that describes | |
6994 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
6995 | union type. Any necessary discriminants' values should be in DVAL, | |
6996 | a record value. That is, this routine selects the appropriate | |
6997 | branch of the union at ADDR according to the discriminant value | |
4c4b4cd2 | 6998 | indicated in the union's type name. */ |
14f9c5c9 | 6999 | |
d2e4a39e | 7000 | static struct type * |
fc1a4b47 | 7001 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7002 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7003 | { |
7004 | int which; | |
d2e4a39e AS |
7005 | struct type *templ_type; |
7006 | struct type *var_type; | |
14f9c5c9 AS |
7007 | |
7008 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
7009 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 7010 | else |
14f9c5c9 AS |
7011 | var_type = var_type0; |
7012 | ||
7013 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7014 | ||
7015 | if (templ_type != NULL) | |
7016 | var_type = templ_type; | |
7017 | ||
d2e4a39e AS |
7018 | which = |
7019 | ada_which_variant_applies (var_type, | |
0fd88904 | 7020 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
7021 | |
7022 | if (which < 0) | |
7023 | return empty_record (TYPE_OBJFILE (var_type)); | |
7024 | else if (is_dynamic_field (var_type, which)) | |
4c4b4cd2 | 7025 | return to_fixed_record_type |
d2e4a39e AS |
7026 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
7027 | valaddr, address, dval); | |
4c4b4cd2 | 7028 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
7029 | return |
7030 | to_fixed_record_type | |
7031 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
7032 | else |
7033 | return TYPE_FIELD_TYPE (var_type, which); | |
7034 | } | |
7035 | ||
7036 | /* Assuming that TYPE0 is an array type describing the type of a value | |
7037 | at ADDR, and that DVAL describes a record containing any | |
7038 | discriminants used in TYPE0, returns a type for the value that | |
7039 | contains no dynamic components (that is, no components whose sizes | |
7040 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7041 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7042 | varsize_limit. */ |
14f9c5c9 | 7043 | |
d2e4a39e AS |
7044 | static struct type * |
7045 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 7046 | int ignore_too_big) |
14f9c5c9 | 7047 | { |
d2e4a39e AS |
7048 | struct type *index_type_desc; |
7049 | struct type *result; | |
14f9c5c9 | 7050 | |
4c4b4cd2 PH |
7051 | if (ada_is_packed_array_type (type0) /* revisit? */ |
7052 | || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) | |
7053 | return type0; | |
14f9c5c9 AS |
7054 | |
7055 | index_type_desc = ada_find_parallel_type (type0, "___XA"); | |
7056 | if (index_type_desc == NULL) | |
7057 | { | |
61ee279c | 7058 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 7059 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
7060 | depend on the contents of the array in properly constructed |
7061 | debugging data. */ | |
529cad9c PH |
7062 | /* Create a fixed version of the array element type. |
7063 | We're not providing the address of an element here, | |
e1d5a0d2 | 7064 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7065 | the conversion. This should not be a problem, since arrays of |
7066 | unconstrained objects are not allowed. In particular, all | |
7067 | the elements of an array of a tagged type should all be of | |
7068 | the same type specified in the debugging info. No need to | |
7069 | consult the object tag. */ | |
1ed6ede0 | 7070 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 AS |
7071 | |
7072 | if (elt_type0 == elt_type) | |
4c4b4cd2 | 7073 | result = type0; |
14f9c5c9 | 7074 | else |
4c4b4cd2 PH |
7075 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), |
7076 | elt_type, TYPE_INDEX_TYPE (type0)); | |
14f9c5c9 AS |
7077 | } |
7078 | else | |
7079 | { | |
7080 | int i; | |
7081 | struct type *elt_type0; | |
7082 | ||
7083 | elt_type0 = type0; | |
7084 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 7085 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
7086 | |
7087 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
7088 | depend on the contents of the array in properly constructed |
7089 | debugging data. */ | |
529cad9c PH |
7090 | /* Create a fixed version of the array element type. |
7091 | We're not providing the address of an element here, | |
e1d5a0d2 | 7092 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7093 | the conversion. This should not be a problem, since arrays of |
7094 | unconstrained objects are not allowed. In particular, all | |
7095 | the elements of an array of a tagged type should all be of | |
7096 | the same type specified in the debugging info. No need to | |
7097 | consult the object tag. */ | |
1ed6ede0 JB |
7098 | result = |
7099 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
14f9c5c9 | 7100 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
7101 | { |
7102 | struct type *range_type = | |
7103 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
7104 | dval, TYPE_OBJFILE (type0)); | |
7105 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), | |
7106 | result, range_type); | |
7107 | } | |
d2e4a39e | 7108 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 7109 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7110 | } |
7111 | ||
4c4b4cd2 | 7112 | TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 7113 | return result; |
d2e4a39e | 7114 | } |
14f9c5c9 AS |
7115 | |
7116 | ||
7117 | /* A standard type (containing no dynamically sized components) | |
7118 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
7119 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 7120 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
7121 | ADDRESS or in VALADDR contains these discriminants. |
7122 | ||
1ed6ede0 JB |
7123 | If CHECK_TAG is not null, in the case of tagged types, this function |
7124 | attempts to locate the object's tag and use it to compute the actual | |
7125 | type. However, when ADDRESS is null, we cannot use it to determine the | |
7126 | location of the tag, and therefore compute the tagged type's actual type. | |
7127 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 7128 | |
f192137b JB |
7129 | static struct type * |
7130 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 7131 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 7132 | { |
61ee279c | 7133 | type = ada_check_typedef (type); |
d2e4a39e AS |
7134 | switch (TYPE_CODE (type)) |
7135 | { | |
7136 | default: | |
14f9c5c9 | 7137 | return type; |
d2e4a39e | 7138 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 7139 | { |
76a01679 | 7140 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
7141 | struct type *fixed_record_type = |
7142 | to_fixed_record_type (type, valaddr, address, NULL); | |
529cad9c PH |
7143 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
7144 | then we can determine its tag, and compute the object's actual | |
1ed6ede0 JB |
7145 | type from there. Note that we have to use the fixed record |
7146 | type (the parent part of the record may have dynamic fields | |
7147 | and the way the location of _tag is expressed may depend on | |
7148 | them). */ | |
529cad9c | 7149 | |
1ed6ede0 | 7150 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 JB |
7151 | { |
7152 | struct type *real_type = | |
1ed6ede0 JB |
7153 | type_from_tag (value_tag_from_contents_and_address |
7154 | (fixed_record_type, | |
7155 | valaddr, | |
7156 | address)); | |
76a01679 | 7157 | if (real_type != NULL) |
1ed6ede0 | 7158 | return to_fixed_record_type (real_type, valaddr, address, NULL); |
76a01679 | 7159 | } |
1ed6ede0 | 7160 | return fixed_record_type; |
4c4b4cd2 | 7161 | } |
d2e4a39e | 7162 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 7163 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
7164 | case TYPE_CODE_UNION: |
7165 | if (dval == NULL) | |
4c4b4cd2 | 7166 | return type; |
d2e4a39e | 7167 | else |
4c4b4cd2 | 7168 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 7169 | } |
14f9c5c9 AS |
7170 | } |
7171 | ||
f192137b JB |
7172 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
7173 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
7174 | ada_to_fixed_type_1 would return the type referenced by TYPE. */ | |
7175 | ||
7176 | struct type * | |
7177 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
7178 | CORE_ADDR address, struct value *dval, int check_tag) | |
7179 | ||
7180 | { | |
7181 | struct type *fixed_type = | |
7182 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
7183 | ||
7184 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
7185 | && TYPE_TARGET_TYPE (type) == fixed_type) | |
7186 | return type; | |
7187 | ||
7188 | return fixed_type; | |
7189 | } | |
7190 | ||
14f9c5c9 | 7191 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 7192 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 7193 | |
d2e4a39e AS |
7194 | static struct type * |
7195 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 7196 | { |
d2e4a39e | 7197 | struct type *type; |
14f9c5c9 AS |
7198 | |
7199 | if (type0 == NULL) | |
7200 | return NULL; | |
7201 | ||
4c4b4cd2 PH |
7202 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
7203 | return type0; | |
7204 | ||
61ee279c | 7205 | type0 = ada_check_typedef (type0); |
d2e4a39e | 7206 | |
14f9c5c9 AS |
7207 | switch (TYPE_CODE (type0)) |
7208 | { | |
7209 | default: | |
7210 | return type0; | |
7211 | case TYPE_CODE_STRUCT: | |
7212 | type = dynamic_template_type (type0); | |
d2e4a39e | 7213 | if (type != NULL) |
4c4b4cd2 PH |
7214 | return template_to_static_fixed_type (type); |
7215 | else | |
7216 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7217 | case TYPE_CODE_UNION: |
7218 | type = ada_find_parallel_type (type0, "___XVU"); | |
7219 | if (type != NULL) | |
4c4b4cd2 PH |
7220 | return template_to_static_fixed_type (type); |
7221 | else | |
7222 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7223 | } |
7224 | } | |
7225 | ||
4c4b4cd2 PH |
7226 | /* A static approximation of TYPE with all type wrappers removed. */ |
7227 | ||
d2e4a39e AS |
7228 | static struct type * |
7229 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
7230 | { |
7231 | if (ada_is_aligner_type (type)) | |
7232 | { | |
61ee279c | 7233 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 7234 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 7235 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
7236 | |
7237 | return static_unwrap_type (type1); | |
7238 | } | |
d2e4a39e | 7239 | else |
14f9c5c9 | 7240 | { |
d2e4a39e AS |
7241 | struct type *raw_real_type = ada_get_base_type (type); |
7242 | if (raw_real_type == type) | |
4c4b4cd2 | 7243 | return type; |
14f9c5c9 | 7244 | else |
4c4b4cd2 | 7245 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
7246 | } |
7247 | } | |
7248 | ||
7249 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 7250 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
7251 | type Foo; |
7252 | type FooP is access Foo; | |
7253 | V: FooP; | |
7254 | type Foo is array ...; | |
4c4b4cd2 | 7255 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
7256 | cross-references to such types, we instead substitute for FooP a |
7257 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 7258 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
7259 | |
7260 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
7261 | exists, otherwise TYPE. */ |
7262 | ||
d2e4a39e | 7263 | struct type * |
61ee279c | 7264 | ada_check_typedef (struct type *type) |
14f9c5c9 AS |
7265 | { |
7266 | CHECK_TYPEDEF (type); | |
7267 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 7268 | || !TYPE_STUB (type) |
14f9c5c9 AS |
7269 | || TYPE_TAG_NAME (type) == NULL) |
7270 | return type; | |
d2e4a39e | 7271 | else |
14f9c5c9 | 7272 | { |
d2e4a39e AS |
7273 | char *name = TYPE_TAG_NAME (type); |
7274 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
7275 | return (type1 == NULL) ? type : type1; |
7276 | } | |
7277 | } | |
7278 | ||
7279 | /* A value representing the data at VALADDR/ADDRESS as described by | |
7280 | type TYPE0, but with a standard (static-sized) type that correctly | |
7281 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
7282 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 7283 | creation of struct values]. */ |
14f9c5c9 | 7284 | |
4c4b4cd2 PH |
7285 | static struct value * |
7286 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
7287 | struct value *val0) | |
14f9c5c9 | 7288 | { |
1ed6ede0 | 7289 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
14f9c5c9 AS |
7290 | if (type == type0 && val0 != NULL) |
7291 | return val0; | |
d2e4a39e | 7292 | else |
4c4b4cd2 PH |
7293 | return value_from_contents_and_address (type, 0, address); |
7294 | } | |
7295 | ||
7296 | /* A value representing VAL, but with a standard (static-sized) type | |
7297 | that correctly describes it. Does not necessarily create a new | |
7298 | value. */ | |
7299 | ||
7300 | static struct value * | |
7301 | ada_to_fixed_value (struct value *val) | |
7302 | { | |
df407dfe AC |
7303 | return ada_to_fixed_value_create (value_type (val), |
7304 | VALUE_ADDRESS (val) + value_offset (val), | |
4c4b4cd2 | 7305 | val); |
14f9c5c9 AS |
7306 | } |
7307 | ||
4c4b4cd2 | 7308 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
7309 | chosen to approximate the real type of VAL as well as possible, but |
7310 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 7311 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 7312 | |
d2e4a39e AS |
7313 | struct value * |
7314 | ada_to_static_fixed_value (struct value *val) | |
14f9c5c9 | 7315 | { |
d2e4a39e | 7316 | struct type *type = |
df407dfe AC |
7317 | to_static_fixed_type (static_unwrap_type (value_type (val))); |
7318 | if (type == value_type (val)) | |
14f9c5c9 AS |
7319 | return val; |
7320 | else | |
4c4b4cd2 | 7321 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 7322 | } |
d2e4a39e | 7323 | \f |
14f9c5c9 | 7324 | |
14f9c5c9 AS |
7325 | /* Attributes */ |
7326 | ||
4c4b4cd2 PH |
7327 | /* Table mapping attribute numbers to names. |
7328 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 7329 | |
d2e4a39e | 7330 | static const char *attribute_names[] = { |
14f9c5c9 AS |
7331 | "<?>", |
7332 | ||
d2e4a39e | 7333 | "first", |
14f9c5c9 AS |
7334 | "last", |
7335 | "length", | |
7336 | "image", | |
14f9c5c9 AS |
7337 | "max", |
7338 | "min", | |
4c4b4cd2 PH |
7339 | "modulus", |
7340 | "pos", | |
7341 | "size", | |
7342 | "tag", | |
14f9c5c9 | 7343 | "val", |
14f9c5c9 AS |
7344 | 0 |
7345 | }; | |
7346 | ||
d2e4a39e | 7347 | const char * |
4c4b4cd2 | 7348 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 7349 | { |
4c4b4cd2 PH |
7350 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
7351 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
7352 | else |
7353 | return attribute_names[0]; | |
7354 | } | |
7355 | ||
4c4b4cd2 | 7356 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 7357 | |
4c4b4cd2 PH |
7358 | static LONGEST |
7359 | pos_atr (struct value *arg) | |
14f9c5c9 | 7360 | { |
df407dfe | 7361 | struct type *type = value_type (arg); |
14f9c5c9 | 7362 | |
d2e4a39e | 7363 | if (!discrete_type_p (type)) |
323e0a4a | 7364 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
7365 | |
7366 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7367 | { | |
7368 | int i; | |
7369 | LONGEST v = value_as_long (arg); | |
7370 | ||
d2e4a39e | 7371 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
7372 | { |
7373 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
7374 | return i; | |
7375 | } | |
323e0a4a | 7376 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
7377 | } |
7378 | else | |
4c4b4cd2 PH |
7379 | return value_as_long (arg); |
7380 | } | |
7381 | ||
7382 | static struct value * | |
7383 | value_pos_atr (struct value *arg) | |
7384 | { | |
72d5681a | 7385 | return value_from_longest (builtin_type_int, pos_atr (arg)); |
14f9c5c9 AS |
7386 | } |
7387 | ||
4c4b4cd2 | 7388 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 7389 | |
d2e4a39e AS |
7390 | static struct value * |
7391 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 7392 | { |
d2e4a39e | 7393 | if (!discrete_type_p (type)) |
323e0a4a | 7394 | error (_("'VAL only defined on discrete types")); |
df407dfe | 7395 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 7396 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
7397 | |
7398 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7399 | { | |
7400 | long pos = value_as_long (arg); | |
7401 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
323e0a4a | 7402 | error (_("argument to 'VAL out of range")); |
d2e4a39e | 7403 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
7404 | } |
7405 | else | |
7406 | return value_from_longest (type, value_as_long (arg)); | |
7407 | } | |
14f9c5c9 | 7408 | \f |
d2e4a39e | 7409 | |
4c4b4cd2 | 7410 | /* Evaluation */ |
14f9c5c9 | 7411 | |
4c4b4cd2 PH |
7412 | /* True if TYPE appears to be an Ada character type. |
7413 | [At the moment, this is true only for Character and Wide_Character; | |
7414 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 7415 | |
d2e4a39e AS |
7416 | int |
7417 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 7418 | { |
7b9f71f2 JB |
7419 | const char *name; |
7420 | ||
7421 | /* If the type code says it's a character, then assume it really is, | |
7422 | and don't check any further. */ | |
7423 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
7424 | return 1; | |
7425 | ||
7426 | /* Otherwise, assume it's a character type iff it is a discrete type | |
7427 | with a known character type name. */ | |
7428 | name = ada_type_name (type); | |
7429 | return (name != NULL | |
7430 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
7431 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
7432 | && (strcmp (name, "character") == 0 | |
7433 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 7434 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 7435 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
7436 | } |
7437 | ||
4c4b4cd2 | 7438 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
7439 | |
7440 | int | |
ebf56fd3 | 7441 | ada_is_string_type (struct type *type) |
14f9c5c9 | 7442 | { |
61ee279c | 7443 | type = ada_check_typedef (type); |
d2e4a39e | 7444 | if (type != NULL |
14f9c5c9 | 7445 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
7446 | && (ada_is_simple_array_type (type) |
7447 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
7448 | && ada_array_arity (type) == 1) |
7449 | { | |
7450 | struct type *elttype = ada_array_element_type (type, 1); | |
7451 | ||
7452 | return ada_is_character_type (elttype); | |
7453 | } | |
d2e4a39e | 7454 | else |
14f9c5c9 AS |
7455 | return 0; |
7456 | } | |
7457 | ||
7458 | ||
7459 | /* True if TYPE is a struct type introduced by the compiler to force the | |
7460 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 7461 | distinctive name. */ |
14f9c5c9 AS |
7462 | |
7463 | int | |
ebf56fd3 | 7464 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 7465 | { |
61ee279c | 7466 | type = ada_check_typedef (type); |
714e53ab PH |
7467 | |
7468 | /* If we can find a parallel XVS type, then the XVS type should | |
7469 | be used instead of this type. And hence, this is not an aligner | |
7470 | type. */ | |
7471 | if (ada_find_parallel_type (type, "___XVS") != NULL) | |
7472 | return 0; | |
7473 | ||
14f9c5c9 | 7474 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
7475 | && TYPE_NFIELDS (type) == 1 |
7476 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
7477 | } |
7478 | ||
7479 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 7480 | the parallel type. */ |
14f9c5c9 | 7481 | |
d2e4a39e AS |
7482 | struct type * |
7483 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 7484 | { |
d2e4a39e AS |
7485 | struct type *real_type_namer; |
7486 | struct type *raw_real_type; | |
14f9c5c9 AS |
7487 | |
7488 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
7489 | return raw_type; | |
7490 | ||
7491 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); | |
d2e4a39e | 7492 | if (real_type_namer == NULL |
14f9c5c9 AS |
7493 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
7494 | || TYPE_NFIELDS (real_type_namer) != 1) | |
7495 | return raw_type; | |
7496 | ||
7497 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 7498 | if (raw_real_type == NULL) |
14f9c5c9 AS |
7499 | return raw_type; |
7500 | else | |
7501 | return raw_real_type; | |
d2e4a39e | 7502 | } |
14f9c5c9 | 7503 | |
4c4b4cd2 | 7504 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 7505 | |
d2e4a39e AS |
7506 | struct type * |
7507 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
7508 | { |
7509 | if (ada_is_aligner_type (type)) | |
7510 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
7511 | else | |
7512 | return ada_get_base_type (type); | |
7513 | } | |
7514 | ||
7515 | ||
7516 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 7517 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 7518 | |
fc1a4b47 AC |
7519 | const gdb_byte * |
7520 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 7521 | { |
d2e4a39e | 7522 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 7523 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
7524 | valaddr + |
7525 | TYPE_FIELD_BITPOS (type, | |
7526 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
7527 | else |
7528 | return valaddr; | |
7529 | } | |
7530 | ||
4c4b4cd2 PH |
7531 | |
7532 | ||
14f9c5c9 | 7533 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 7534 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
7535 | const char * |
7536 | ada_enum_name (const char *name) | |
14f9c5c9 | 7537 | { |
4c4b4cd2 PH |
7538 | static char *result; |
7539 | static size_t result_len = 0; | |
d2e4a39e | 7540 | char *tmp; |
14f9c5c9 | 7541 | |
4c4b4cd2 PH |
7542 | /* First, unqualify the enumeration name: |
7543 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
7544 | all the preceeding characters, the unqualified name starts |
7545 | right after that dot. | |
4c4b4cd2 | 7546 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
7547 | translates dots into "__". Search forward for double underscores, |
7548 | but stop searching when we hit an overloading suffix, which is | |
7549 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 7550 | |
c3e5cd34 PH |
7551 | tmp = strrchr (name, '.'); |
7552 | if (tmp != NULL) | |
4c4b4cd2 PH |
7553 | name = tmp + 1; |
7554 | else | |
14f9c5c9 | 7555 | { |
4c4b4cd2 PH |
7556 | while ((tmp = strstr (name, "__")) != NULL) |
7557 | { | |
7558 | if (isdigit (tmp[2])) | |
7559 | break; | |
7560 | else | |
7561 | name = tmp + 2; | |
7562 | } | |
14f9c5c9 AS |
7563 | } |
7564 | ||
7565 | if (name[0] == 'Q') | |
7566 | { | |
14f9c5c9 AS |
7567 | int v; |
7568 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
7569 | { |
7570 | if (sscanf (name + 2, "%x", &v) != 1) | |
7571 | return name; | |
7572 | } | |
14f9c5c9 | 7573 | else |
4c4b4cd2 | 7574 | return name; |
14f9c5c9 | 7575 | |
4c4b4cd2 | 7576 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 7577 | if (isascii (v) && isprint (v)) |
4c4b4cd2 | 7578 | sprintf (result, "'%c'", v); |
14f9c5c9 | 7579 | else if (name[1] == 'U') |
4c4b4cd2 | 7580 | sprintf (result, "[\"%02x\"]", v); |
14f9c5c9 | 7581 | else |
4c4b4cd2 | 7582 | sprintf (result, "[\"%04x\"]", v); |
14f9c5c9 AS |
7583 | |
7584 | return result; | |
7585 | } | |
d2e4a39e | 7586 | else |
4c4b4cd2 | 7587 | { |
c3e5cd34 PH |
7588 | tmp = strstr (name, "__"); |
7589 | if (tmp == NULL) | |
7590 | tmp = strstr (name, "$"); | |
7591 | if (tmp != NULL) | |
4c4b4cd2 PH |
7592 | { |
7593 | GROW_VECT (result, result_len, tmp - name + 1); | |
7594 | strncpy (result, name, tmp - name); | |
7595 | result[tmp - name] = '\0'; | |
7596 | return result; | |
7597 | } | |
7598 | ||
7599 | return name; | |
7600 | } | |
14f9c5c9 AS |
7601 | } |
7602 | ||
d2e4a39e | 7603 | static struct value * |
ebf56fd3 | 7604 | evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, |
4c4b4cd2 | 7605 | enum noside noside) |
14f9c5c9 | 7606 | { |
76a01679 | 7607 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
4c4b4cd2 | 7608 | (expect_type, exp, pos, noside); |
14f9c5c9 AS |
7609 | } |
7610 | ||
7611 | /* Evaluate the subexpression of EXP starting at *POS as for | |
7612 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 7613 | expression. */ |
14f9c5c9 | 7614 | |
d2e4a39e AS |
7615 | static struct value * |
7616 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 7617 | { |
4c4b4cd2 | 7618 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
14f9c5c9 AS |
7619 | (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
7620 | } | |
7621 | ||
7622 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 7623 | value it wraps. */ |
14f9c5c9 | 7624 | |
d2e4a39e AS |
7625 | static struct value * |
7626 | unwrap_value (struct value *val) | |
14f9c5c9 | 7627 | { |
df407dfe | 7628 | struct type *type = ada_check_typedef (value_type (val)); |
14f9c5c9 AS |
7629 | if (ada_is_aligner_type (type)) |
7630 | { | |
d2e4a39e | 7631 | struct value *v = value_struct_elt (&val, NULL, "F", |
4c4b4cd2 | 7632 | NULL, "internal structure"); |
df407dfe | 7633 | struct type *val_type = ada_check_typedef (value_type (v)); |
14f9c5c9 | 7634 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 7635 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
7636 | |
7637 | return unwrap_value (v); | |
7638 | } | |
d2e4a39e | 7639 | else |
14f9c5c9 | 7640 | { |
d2e4a39e | 7641 | struct type *raw_real_type = |
61ee279c | 7642 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 7643 | |
14f9c5c9 | 7644 | if (type == raw_real_type) |
4c4b4cd2 | 7645 | return val; |
14f9c5c9 | 7646 | |
d2e4a39e | 7647 | return |
4c4b4cd2 PH |
7648 | coerce_unspec_val_to_type |
7649 | (val, ada_to_fixed_type (raw_real_type, 0, | |
df407dfe | 7650 | VALUE_ADDRESS (val) + value_offset (val), |
1ed6ede0 | 7651 | NULL, 1)); |
14f9c5c9 AS |
7652 | } |
7653 | } | |
d2e4a39e AS |
7654 | |
7655 | static struct value * | |
7656 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
7657 | { |
7658 | LONGEST val; | |
7659 | ||
df407dfe | 7660 | if (type == value_type (arg)) |
14f9c5c9 | 7661 | return arg; |
df407dfe | 7662 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 7663 | val = ada_float_to_fixed (type, |
df407dfe | 7664 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7665 | value_as_long (arg))); |
d2e4a39e | 7666 | else |
14f9c5c9 | 7667 | { |
d2e4a39e | 7668 | DOUBLEST argd = |
4c4b4cd2 | 7669 | value_as_double (value_cast (builtin_type_double, value_copy (arg))); |
14f9c5c9 AS |
7670 | val = ada_float_to_fixed (type, argd); |
7671 | } | |
7672 | ||
7673 | return value_from_longest (type, val); | |
7674 | } | |
7675 | ||
d2e4a39e AS |
7676 | static struct value * |
7677 | cast_from_fixed_to_double (struct value *arg) | |
14f9c5c9 | 7678 | { |
df407dfe | 7679 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7680 | value_as_long (arg)); |
14f9c5c9 AS |
7681 | return value_from_double (builtin_type_double, val); |
7682 | } | |
7683 | ||
4c4b4cd2 PH |
7684 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
7685 | return the converted value. */ | |
7686 | ||
d2e4a39e AS |
7687 | static struct value * |
7688 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 7689 | { |
df407dfe | 7690 | struct type *type2 = value_type (val); |
14f9c5c9 AS |
7691 | if (type == type2) |
7692 | return val; | |
7693 | ||
61ee279c PH |
7694 | type2 = ada_check_typedef (type2); |
7695 | type = ada_check_typedef (type); | |
14f9c5c9 | 7696 | |
d2e4a39e AS |
7697 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
7698 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
7699 | { |
7700 | val = ada_value_ind (val); | |
df407dfe | 7701 | type2 = value_type (val); |
14f9c5c9 AS |
7702 | } |
7703 | ||
d2e4a39e | 7704 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
7705 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
7706 | { | |
7707 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
7708 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
7709 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
323e0a4a | 7710 | error (_("Incompatible types in assignment")); |
04624583 | 7711 | deprecated_set_value_type (val, type); |
14f9c5c9 | 7712 | } |
d2e4a39e | 7713 | return val; |
14f9c5c9 AS |
7714 | } |
7715 | ||
4c4b4cd2 PH |
7716 | static struct value * |
7717 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
7718 | { | |
7719 | struct value *val; | |
7720 | struct type *type1, *type2; | |
7721 | LONGEST v, v1, v2; | |
7722 | ||
994b9211 AC |
7723 | arg1 = coerce_ref (arg1); |
7724 | arg2 = coerce_ref (arg2); | |
df407dfe AC |
7725 | type1 = base_type (ada_check_typedef (value_type (arg1))); |
7726 | type2 = base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 7727 | |
76a01679 JB |
7728 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
7729 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
7730 | return value_binop (arg1, arg2, op); |
7731 | ||
76a01679 | 7732 | switch (op) |
4c4b4cd2 PH |
7733 | { |
7734 | case BINOP_MOD: | |
7735 | case BINOP_DIV: | |
7736 | case BINOP_REM: | |
7737 | break; | |
7738 | default: | |
7739 | return value_binop (arg1, arg2, op); | |
7740 | } | |
7741 | ||
7742 | v2 = value_as_long (arg2); | |
7743 | if (v2 == 0) | |
323e0a4a | 7744 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
7745 | |
7746 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
7747 | return value_binop (arg1, arg2, op); | |
7748 | ||
7749 | v1 = value_as_long (arg1); | |
7750 | switch (op) | |
7751 | { | |
7752 | case BINOP_DIV: | |
7753 | v = v1 / v2; | |
76a01679 JB |
7754 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
7755 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
7756 | break; |
7757 | case BINOP_REM: | |
7758 | v = v1 % v2; | |
76a01679 JB |
7759 | if (v * v1 < 0) |
7760 | v -= v2; | |
4c4b4cd2 PH |
7761 | break; |
7762 | default: | |
7763 | /* Should not reach this point. */ | |
7764 | v = 0; | |
7765 | } | |
7766 | ||
7767 | val = allocate_value (type1); | |
990a07ab | 7768 | store_unsigned_integer (value_contents_raw (val), |
df407dfe | 7769 | TYPE_LENGTH (value_type (val)), v); |
4c4b4cd2 PH |
7770 | return val; |
7771 | } | |
7772 | ||
7773 | static int | |
7774 | ada_value_equal (struct value *arg1, struct value *arg2) | |
7775 | { | |
df407dfe AC |
7776 | if (ada_is_direct_array_type (value_type (arg1)) |
7777 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 7778 | { |
f58b38bf JB |
7779 | /* Automatically dereference any array reference before |
7780 | we attempt to perform the comparison. */ | |
7781 | arg1 = ada_coerce_ref (arg1); | |
7782 | arg2 = ada_coerce_ref (arg2); | |
7783 | ||
4c4b4cd2 PH |
7784 | arg1 = ada_coerce_to_simple_array (arg1); |
7785 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
7786 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
7787 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 7788 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 7789 | /* FIXME: The following works only for types whose |
76a01679 JB |
7790 | representations use all bits (no padding or undefined bits) |
7791 | and do not have user-defined equality. */ | |
7792 | return | |
df407dfe | 7793 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 7794 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 7795 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
7796 | } |
7797 | return value_equal (arg1, arg2); | |
7798 | } | |
7799 | ||
52ce6436 PH |
7800 | /* Total number of component associations in the aggregate starting at |
7801 | index PC in EXP. Assumes that index PC is the start of an | |
7802 | OP_AGGREGATE. */ | |
7803 | ||
7804 | static int | |
7805 | num_component_specs (struct expression *exp, int pc) | |
7806 | { | |
7807 | int n, m, i; | |
7808 | m = exp->elts[pc + 1].longconst; | |
7809 | pc += 3; | |
7810 | n = 0; | |
7811 | for (i = 0; i < m; i += 1) | |
7812 | { | |
7813 | switch (exp->elts[pc].opcode) | |
7814 | { | |
7815 | default: | |
7816 | n += 1; | |
7817 | break; | |
7818 | case OP_CHOICES: | |
7819 | n += exp->elts[pc + 1].longconst; | |
7820 | break; | |
7821 | } | |
7822 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
7823 | } | |
7824 | return n; | |
7825 | } | |
7826 | ||
7827 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
7828 | component of LHS (a simple array or a record), updating *POS past | |
7829 | the expression, assuming that LHS is contained in CONTAINER. Does | |
7830 | not modify the inferior's memory, nor does it modify LHS (unless | |
7831 | LHS == CONTAINER). */ | |
7832 | ||
7833 | static void | |
7834 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
7835 | struct expression *exp, int *pos) | |
7836 | { | |
7837 | struct value *mark = value_mark (); | |
7838 | struct value *elt; | |
7839 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) | |
7840 | { | |
7841 | struct value *index_val = value_from_longest (builtin_type_int, index); | |
7842 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); | |
7843 | } | |
7844 | else | |
7845 | { | |
7846 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
7847 | elt = ada_to_fixed_value (unwrap_value (elt)); | |
7848 | } | |
7849 | ||
7850 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
7851 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
7852 | else | |
7853 | value_assign_to_component (container, elt, | |
7854 | ada_evaluate_subexp (NULL, exp, pos, | |
7855 | EVAL_NORMAL)); | |
7856 | ||
7857 | value_free_to_mark (mark); | |
7858 | } | |
7859 | ||
7860 | /* Assuming that LHS represents an lvalue having a record or array | |
7861 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
7862 | of that aggregate's value to LHS, advancing *POS past the | |
7863 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
7864 | lvalue containing LHS (possibly LHS itself). Does not modify | |
7865 | the inferior's memory, nor does it modify the contents of | |
7866 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ | |
7867 | ||
7868 | static struct value * | |
7869 | assign_aggregate (struct value *container, | |
7870 | struct value *lhs, struct expression *exp, | |
7871 | int *pos, enum noside noside) | |
7872 | { | |
7873 | struct type *lhs_type; | |
7874 | int n = exp->elts[*pos+1].longconst; | |
7875 | LONGEST low_index, high_index; | |
7876 | int num_specs; | |
7877 | LONGEST *indices; | |
7878 | int max_indices, num_indices; | |
7879 | int is_array_aggregate; | |
7880 | int i; | |
7881 | struct value *mark = value_mark (); | |
7882 | ||
7883 | *pos += 3; | |
7884 | if (noside != EVAL_NORMAL) | |
7885 | { | |
7886 | int i; | |
7887 | for (i = 0; i < n; i += 1) | |
7888 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
7889 | return container; | |
7890 | } | |
7891 | ||
7892 | container = ada_coerce_ref (container); | |
7893 | if (ada_is_direct_array_type (value_type (container))) | |
7894 | container = ada_coerce_to_simple_array (container); | |
7895 | lhs = ada_coerce_ref (lhs); | |
7896 | if (!deprecated_value_modifiable (lhs)) | |
7897 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
7898 | ||
7899 | lhs_type = value_type (lhs); | |
7900 | if (ada_is_direct_array_type (lhs_type)) | |
7901 | { | |
7902 | lhs = ada_coerce_to_simple_array (lhs); | |
7903 | lhs_type = value_type (lhs); | |
7904 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
7905 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
7906 | is_array_aggregate = 1; | |
7907 | } | |
7908 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
7909 | { | |
7910 | low_index = 0; | |
7911 | high_index = num_visible_fields (lhs_type) - 1; | |
7912 | is_array_aggregate = 0; | |
7913 | } | |
7914 | else | |
7915 | error (_("Left-hand side must be array or record.")); | |
7916 | ||
7917 | num_specs = num_component_specs (exp, *pos - 3); | |
7918 | max_indices = 4 * num_specs + 4; | |
7919 | indices = alloca (max_indices * sizeof (indices[0])); | |
7920 | indices[0] = indices[1] = low_index - 1; | |
7921 | indices[2] = indices[3] = high_index + 1; | |
7922 | num_indices = 4; | |
7923 | ||
7924 | for (i = 0; i < n; i += 1) | |
7925 | { | |
7926 | switch (exp->elts[*pos].opcode) | |
7927 | { | |
7928 | case OP_CHOICES: | |
7929 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
7930 | &num_indices, max_indices, | |
7931 | low_index, high_index); | |
7932 | break; | |
7933 | case OP_POSITIONAL: | |
7934 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
7935 | &num_indices, max_indices, | |
7936 | low_index, high_index); | |
7937 | break; | |
7938 | case OP_OTHERS: | |
7939 | if (i != n-1) | |
7940 | error (_("Misplaced 'others' clause")); | |
7941 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
7942 | num_indices, low_index, high_index); | |
7943 | break; | |
7944 | default: | |
7945 | error (_("Internal error: bad aggregate clause")); | |
7946 | } | |
7947 | } | |
7948 | ||
7949 | return container; | |
7950 | } | |
7951 | ||
7952 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
7953 | construct at *POS, updating *POS past the construct, given that | |
7954 | the positions are relative to lower bound LOW, where HIGH is the | |
7955 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
7956 | updating *NUM_INDICES as needed. CONTAINER is as for | |
7957 | assign_aggregate. */ | |
7958 | static void | |
7959 | aggregate_assign_positional (struct value *container, | |
7960 | struct value *lhs, struct expression *exp, | |
7961 | int *pos, LONGEST *indices, int *num_indices, | |
7962 | int max_indices, LONGEST low, LONGEST high) | |
7963 | { | |
7964 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
7965 | ||
7966 | if (ind - 1 == high) | |
e1d5a0d2 | 7967 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
7968 | if (ind <= high) |
7969 | { | |
7970 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
7971 | *pos += 3; | |
7972 | assign_component (container, lhs, ind, exp, pos); | |
7973 | } | |
7974 | else | |
7975 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7976 | } | |
7977 | ||
7978 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
7979 | construct at *POS, updating *POS past the construct, given that | |
7980 | the allowable indices are LOW..HIGH. Record the indices assigned | |
7981 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
7982 | needed. CONTAINER is as for assign_aggregate. */ | |
7983 | static void | |
7984 | aggregate_assign_from_choices (struct value *container, | |
7985 | struct value *lhs, struct expression *exp, | |
7986 | int *pos, LONGEST *indices, int *num_indices, | |
7987 | int max_indices, LONGEST low, LONGEST high) | |
7988 | { | |
7989 | int j; | |
7990 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
7991 | int choice_pos, expr_pc; | |
7992 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
7993 | ||
7994 | choice_pos = *pos += 3; | |
7995 | ||
7996 | for (j = 0; j < n_choices; j += 1) | |
7997 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7998 | expr_pc = *pos; | |
7999 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8000 | ||
8001 | for (j = 0; j < n_choices; j += 1) | |
8002 | { | |
8003 | LONGEST lower, upper; | |
8004 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
8005 | if (op == OP_DISCRETE_RANGE) | |
8006 | { | |
8007 | choice_pos += 1; | |
8008 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8009 | EVAL_NORMAL)); | |
8010 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8011 | EVAL_NORMAL)); | |
8012 | } | |
8013 | else if (is_array) | |
8014 | { | |
8015 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
8016 | EVAL_NORMAL)); | |
8017 | upper = lower; | |
8018 | } | |
8019 | else | |
8020 | { | |
8021 | int ind; | |
8022 | char *name; | |
8023 | switch (op) | |
8024 | { | |
8025 | case OP_NAME: | |
8026 | name = &exp->elts[choice_pos + 2].string; | |
8027 | break; | |
8028 | case OP_VAR_VALUE: | |
8029 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
8030 | break; | |
8031 | default: | |
8032 | error (_("Invalid record component association.")); | |
8033 | } | |
8034 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
8035 | ind = 0; | |
8036 | if (! find_struct_field (name, value_type (lhs), 0, | |
8037 | NULL, NULL, NULL, NULL, &ind)) | |
8038 | error (_("Unknown component name: %s."), name); | |
8039 | lower = upper = ind; | |
8040 | } | |
8041 | ||
8042 | if (lower <= upper && (lower < low || upper > high)) | |
8043 | error (_("Index in component association out of bounds.")); | |
8044 | ||
8045 | add_component_interval (lower, upper, indices, num_indices, | |
8046 | max_indices); | |
8047 | while (lower <= upper) | |
8048 | { | |
8049 | int pos1; | |
8050 | pos1 = expr_pc; | |
8051 | assign_component (container, lhs, lower, exp, &pos1); | |
8052 | lower += 1; | |
8053 | } | |
8054 | } | |
8055 | } | |
8056 | ||
8057 | /* Assign the value of the expression in the OP_OTHERS construct in | |
8058 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
8059 | have not been previously assigned. The index intervals already assigned | |
8060 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
8061 | OP_OTHERS clause. CONTAINER is as for assign_aggregate*/ | |
8062 | static void | |
8063 | aggregate_assign_others (struct value *container, | |
8064 | struct value *lhs, struct expression *exp, | |
8065 | int *pos, LONGEST *indices, int num_indices, | |
8066 | LONGEST low, LONGEST high) | |
8067 | { | |
8068 | int i; | |
8069 | int expr_pc = *pos+1; | |
8070 | ||
8071 | for (i = 0; i < num_indices - 2; i += 2) | |
8072 | { | |
8073 | LONGEST ind; | |
8074 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
8075 | { | |
8076 | int pos; | |
8077 | pos = expr_pc; | |
8078 | assign_component (container, lhs, ind, exp, &pos); | |
8079 | } | |
8080 | } | |
8081 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8082 | } | |
8083 | ||
8084 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
8085 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
8086 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
8087 | MAX_SIZE. The resulting intervals do not overlap. */ | |
8088 | static void | |
8089 | add_component_interval (LONGEST low, LONGEST high, | |
8090 | LONGEST* indices, int *size, int max_size) | |
8091 | { | |
8092 | int i, j; | |
8093 | for (i = 0; i < *size; i += 2) { | |
8094 | if (high >= indices[i] && low <= indices[i + 1]) | |
8095 | { | |
8096 | int kh; | |
8097 | for (kh = i + 2; kh < *size; kh += 2) | |
8098 | if (high < indices[kh]) | |
8099 | break; | |
8100 | if (low < indices[i]) | |
8101 | indices[i] = low; | |
8102 | indices[i + 1] = indices[kh - 1]; | |
8103 | if (high > indices[i + 1]) | |
8104 | indices[i + 1] = high; | |
8105 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
8106 | *size -= kh - i - 2; | |
8107 | return; | |
8108 | } | |
8109 | else if (high < indices[i]) | |
8110 | break; | |
8111 | } | |
8112 | ||
8113 | if (*size == max_size) | |
8114 | error (_("Internal error: miscounted aggregate components.")); | |
8115 | *size += 2; | |
8116 | for (j = *size-1; j >= i+2; j -= 1) | |
8117 | indices[j] = indices[j - 2]; | |
8118 | indices[i] = low; | |
8119 | indices[i + 1] = high; | |
8120 | } | |
8121 | ||
6e48bd2c JB |
8122 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
8123 | is different. */ | |
8124 | ||
8125 | static struct value * | |
8126 | ada_value_cast (struct type *type, struct value *arg2, enum noside noside) | |
8127 | { | |
8128 | if (type == ada_check_typedef (value_type (arg2))) | |
8129 | return arg2; | |
8130 | ||
8131 | if (ada_is_fixed_point_type (type)) | |
8132 | return (cast_to_fixed (type, arg2)); | |
8133 | ||
8134 | if (ada_is_fixed_point_type (value_type (arg2))) | |
8135 | return value_cast (type, cast_from_fixed_to_double (arg2)); | |
8136 | ||
8137 | return value_cast (type, arg2); | |
8138 | } | |
8139 | ||
52ce6436 | 8140 | static struct value * |
ebf56fd3 | 8141 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 8142 | int *pos, enum noside noside) |
14f9c5c9 AS |
8143 | { |
8144 | enum exp_opcode op; | |
14f9c5c9 AS |
8145 | int tem, tem2, tem3; |
8146 | int pc; | |
8147 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
8148 | struct type *type; | |
52ce6436 | 8149 | int nargs, oplen; |
d2e4a39e | 8150 | struct value **argvec; |
14f9c5c9 | 8151 | |
d2e4a39e AS |
8152 | pc = *pos; |
8153 | *pos += 1; | |
14f9c5c9 AS |
8154 | op = exp->elts[pc].opcode; |
8155 | ||
d2e4a39e | 8156 | switch (op) |
14f9c5c9 AS |
8157 | { |
8158 | default: | |
8159 | *pos -= 1; | |
6e48bd2c JB |
8160 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
8161 | arg1 = unwrap_value (arg1); | |
8162 | ||
8163 | /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided, | |
8164 | then we need to perform the conversion manually, because | |
8165 | evaluate_subexp_standard doesn't do it. This conversion is | |
8166 | necessary in Ada because the different kinds of float/fixed | |
8167 | types in Ada have different representations. | |
8168 | ||
8169 | Similarly, we need to perform the conversion from OP_LONG | |
8170 | ourselves. */ | |
8171 | if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL) | |
8172 | arg1 = ada_value_cast (expect_type, arg1, noside); | |
8173 | ||
8174 | return arg1; | |
4c4b4cd2 PH |
8175 | |
8176 | case OP_STRING: | |
8177 | { | |
76a01679 JB |
8178 | struct value *result; |
8179 | *pos -= 1; | |
8180 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8181 | /* The result type will have code OP_STRING, bashed there from | |
8182 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
8183 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
8184 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 8185 | return result; |
4c4b4cd2 | 8186 | } |
14f9c5c9 AS |
8187 | |
8188 | case UNOP_CAST: | |
8189 | (*pos) += 2; | |
8190 | type = exp->elts[pc + 1].type; | |
8191 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
8192 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8193 | goto nosideret; |
6e48bd2c | 8194 | arg1 = ada_value_cast (type, arg1, noside); |
14f9c5c9 AS |
8195 | return arg1; |
8196 | ||
4c4b4cd2 PH |
8197 | case UNOP_QUAL: |
8198 | (*pos) += 2; | |
8199 | type = exp->elts[pc + 1].type; | |
8200 | return ada_evaluate_subexp (type, exp, pos, noside); | |
8201 | ||
14f9c5c9 AS |
8202 | case BINOP_ASSIGN: |
8203 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
8204 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
8205 | { | |
8206 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
8207 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
8208 | return arg1; | |
8209 | return ada_value_assign (arg1, arg1); | |
8210 | } | |
df407dfe | 8211 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 8212 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8213 | return arg1; |
df407dfe AC |
8214 | if (ada_is_fixed_point_type (value_type (arg1))) |
8215 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
8216 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 8217 | error |
323e0a4a | 8218 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 8219 | else |
df407dfe | 8220 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 8221 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
8222 | |
8223 | case BINOP_ADD: | |
8224 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8225 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8226 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8227 | goto nosideret; |
df407dfe AC |
8228 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8229 | || ada_is_fixed_point_type (value_type (arg2))) | |
8230 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8231 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
8232 | /* Do the addition, and cast the result to the type of the first |
8233 | argument. We cannot cast the result to a reference type, so if | |
8234 | ARG1 is a reference type, find its underlying type. */ | |
8235 | type = value_type (arg1); | |
8236 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8237 | type = TYPE_TARGET_TYPE (type); | |
8238 | return value_cast (type, value_add (arg1, arg2)); | |
14f9c5c9 AS |
8239 | |
8240 | case BINOP_SUB: | |
8241 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8242 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8243 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8244 | goto nosideret; |
df407dfe AC |
8245 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8246 | || ada_is_fixed_point_type (value_type (arg2))) | |
8247 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8248 | error (_("Operands of fixed-point subtraction must have the same type")); |
b7789565 JB |
8249 | /* Do the substraction, and cast the result to the type of the first |
8250 | argument. We cannot cast the result to a reference type, so if | |
8251 | ARG1 is a reference type, find its underlying type. */ | |
8252 | type = value_type (arg1); | |
8253 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8254 | type = TYPE_TARGET_TYPE (type); | |
8255 | return value_cast (type, value_sub (arg1, arg2)); | |
14f9c5c9 AS |
8256 | |
8257 | case BINOP_MUL: | |
8258 | case BINOP_DIV: | |
8259 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8260 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8261 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
8262 | goto nosideret; |
8263 | else if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a01679 | 8264 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8265 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8266 | else |
4c4b4cd2 | 8267 | { |
df407dfe | 8268 | if (ada_is_fixed_point_type (value_type (arg1))) |
4c4b4cd2 | 8269 | arg1 = cast_from_fixed_to_double (arg1); |
df407dfe | 8270 | if (ada_is_fixed_point_type (value_type (arg2))) |
4c4b4cd2 PH |
8271 | arg2 = cast_from_fixed_to_double (arg2); |
8272 | return ada_value_binop (arg1, arg2, op); | |
8273 | } | |
8274 | ||
8275 | case BINOP_REM: | |
8276 | case BINOP_MOD: | |
8277 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8278 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8279 | if (noside == EVAL_SKIP) | |
76a01679 | 8280 | goto nosideret; |
4c4b4cd2 | 8281 | else if (noside == EVAL_AVOID_SIDE_EFFECTS |
76a01679 | 8282 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8283 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8284 | else |
76a01679 | 8285 | return ada_value_binop (arg1, arg2, op); |
14f9c5c9 | 8286 | |
4c4b4cd2 PH |
8287 | case BINOP_EQUAL: |
8288 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 8289 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 8290 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 8291 | if (noside == EVAL_SKIP) |
76a01679 | 8292 | goto nosideret; |
4c4b4cd2 | 8293 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8294 | tem = 0; |
4c4b4cd2 | 8295 | else |
76a01679 | 8296 | tem = ada_value_equal (arg1, arg2); |
4c4b4cd2 | 8297 | if (op == BINOP_NOTEQUAL) |
76a01679 | 8298 | tem = !tem; |
4c4b4cd2 PH |
8299 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
8300 | ||
8301 | case UNOP_NEG: | |
8302 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8303 | if (noside == EVAL_SKIP) | |
8304 | goto nosideret; | |
df407dfe AC |
8305 | else if (ada_is_fixed_point_type (value_type (arg1))) |
8306 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 8307 | else |
4c4b4cd2 PH |
8308 | return value_neg (arg1); |
8309 | ||
2330c6c6 JB |
8310 | case BINOP_LOGICAL_AND: |
8311 | case BINOP_LOGICAL_OR: | |
8312 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
8313 | { |
8314 | struct value *val; | |
8315 | ||
8316 | *pos -= 1; | |
8317 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8318 | return value_cast (LA_BOOL_TYPE, val); | |
8319 | } | |
2330c6c6 JB |
8320 | |
8321 | case BINOP_BITWISE_AND: | |
8322 | case BINOP_BITWISE_IOR: | |
8323 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
8324 | { |
8325 | struct value *val; | |
8326 | ||
8327 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
8328 | *pos = pc; | |
8329 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8330 | ||
8331 | return value_cast (value_type (arg1), val); | |
8332 | } | |
2330c6c6 | 8333 | |
14f9c5c9 AS |
8334 | case OP_VAR_VALUE: |
8335 | *pos -= 1; | |
8336 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
8337 | { |
8338 | *pos += 4; | |
8339 | goto nosideret; | |
8340 | } | |
8341 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
8342 | /* Only encountered when an unresolved symbol occurs in a |
8343 | context other than a function call, in which case, it is | |
52ce6436 | 8344 | invalid. */ |
323e0a4a | 8345 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 8346 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 8347 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
8348 | { |
8349 | *pos += 4; | |
8350 | return value_zero | |
8351 | (to_static_fixed_type | |
8352 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
8353 | not_lval); | |
8354 | } | |
d2e4a39e | 8355 | else |
4c4b4cd2 PH |
8356 | { |
8357 | arg1 = | |
8358 | unwrap_value (evaluate_subexp_standard | |
8359 | (expect_type, exp, pos, noside)); | |
8360 | return ada_to_fixed_value (arg1); | |
8361 | } | |
8362 | ||
8363 | case OP_FUNCALL: | |
8364 | (*pos) += 2; | |
8365 | ||
8366 | /* Allocate arg vector, including space for the function to be | |
8367 | called in argvec[0] and a terminating NULL. */ | |
8368 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8369 | argvec = | |
8370 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
8371 | ||
8372 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 8373 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 8374 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
8375 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
8376 | else | |
8377 | { | |
8378 | for (tem = 0; tem <= nargs; tem += 1) | |
8379 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8380 | argvec[tem] = 0; | |
8381 | ||
8382 | if (noside == EVAL_SKIP) | |
8383 | goto nosideret; | |
8384 | } | |
8385 | ||
df407dfe | 8386 | if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0])))) |
4c4b4cd2 | 8387 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
df407dfe AC |
8388 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
8389 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 8390 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
8391 | argvec[0] = value_addr (argvec[0]); |
8392 | ||
df407dfe | 8393 | type = ada_check_typedef (value_type (argvec[0])); |
4c4b4cd2 PH |
8394 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
8395 | { | |
61ee279c | 8396 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
8397 | { |
8398 | case TYPE_CODE_FUNC: | |
61ee279c | 8399 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8400 | break; |
8401 | case TYPE_CODE_ARRAY: | |
8402 | break; | |
8403 | case TYPE_CODE_STRUCT: | |
8404 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
8405 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 8406 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8407 | break; |
8408 | default: | |
323e0a4a | 8409 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 8410 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
8411 | break; |
8412 | } | |
8413 | } | |
8414 | ||
8415 | switch (TYPE_CODE (type)) | |
8416 | { | |
8417 | case TYPE_CODE_FUNC: | |
8418 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8419 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
8420 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
8421 | case TYPE_CODE_STRUCT: | |
8422 | { | |
8423 | int arity; | |
8424 | ||
4c4b4cd2 PH |
8425 | arity = ada_array_arity (type); |
8426 | type = ada_array_element_type (type, nargs); | |
8427 | if (type == NULL) | |
323e0a4a | 8428 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 8429 | if (arity != nargs) |
323e0a4a | 8430 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 8431 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 8432 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8433 | return |
8434 | unwrap_value (ada_value_subscript | |
8435 | (argvec[0], nargs, argvec + 1)); | |
8436 | } | |
8437 | case TYPE_CODE_ARRAY: | |
8438 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8439 | { | |
8440 | type = ada_array_element_type (type, nargs); | |
8441 | if (type == NULL) | |
323e0a4a | 8442 | error (_("element type of array unknown")); |
4c4b4cd2 | 8443 | else |
0a07e705 | 8444 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8445 | } |
8446 | return | |
8447 | unwrap_value (ada_value_subscript | |
8448 | (ada_coerce_to_simple_array (argvec[0]), | |
8449 | nargs, argvec + 1)); | |
8450 | case TYPE_CODE_PTR: /* Pointer to array */ | |
8451 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
8452 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8453 | { | |
8454 | type = ada_array_element_type (type, nargs); | |
8455 | if (type == NULL) | |
323e0a4a | 8456 | error (_("element type of array unknown")); |
4c4b4cd2 | 8457 | else |
0a07e705 | 8458 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8459 | } |
8460 | return | |
8461 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
8462 | nargs, argvec + 1)); | |
8463 | ||
8464 | default: | |
e1d5a0d2 PH |
8465 | error (_("Attempt to index or call something other than an " |
8466 | "array or function")); | |
4c4b4cd2 PH |
8467 | } |
8468 | ||
8469 | case TERNOP_SLICE: | |
8470 | { | |
8471 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8472 | struct value *low_bound_val = | |
8473 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
8474 | struct value *high_bound_val = |
8475 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8476 | LONGEST low_bound; | |
8477 | LONGEST high_bound; | |
994b9211 AC |
8478 | low_bound_val = coerce_ref (low_bound_val); |
8479 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
8480 | low_bound = pos_atr (low_bound_val); |
8481 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 8482 | |
4c4b4cd2 PH |
8483 | if (noside == EVAL_SKIP) |
8484 | goto nosideret; | |
8485 | ||
4c4b4cd2 PH |
8486 | /* If this is a reference to an aligner type, then remove all |
8487 | the aligners. */ | |
df407dfe AC |
8488 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8489 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
8490 | TYPE_TARGET_TYPE (value_type (array)) = | |
8491 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 8492 | |
df407dfe | 8493 | if (ada_is_packed_array_type (value_type (array))) |
323e0a4a | 8494 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
8495 | |
8496 | /* If this is a reference to an array or an array lvalue, | |
8497 | convert to a pointer. */ | |
df407dfe AC |
8498 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8499 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
8500 | && VALUE_LVAL (array) == lval_memory)) |
8501 | array = value_addr (array); | |
8502 | ||
1265e4aa | 8503 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 8504 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 8505 | (value_type (array)))) |
0b5d8877 | 8506 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
8507 | |
8508 | array = ada_coerce_to_simple_array_ptr (array); | |
8509 | ||
714e53ab PH |
8510 | /* If we have more than one level of pointer indirection, |
8511 | dereference the value until we get only one level. */ | |
df407dfe AC |
8512 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
8513 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
8514 | == TYPE_CODE_PTR)) |
8515 | array = value_ind (array); | |
8516 | ||
8517 | /* Make sure we really do have an array type before going further, | |
8518 | to avoid a SEGV when trying to get the index type or the target | |
8519 | type later down the road if the debug info generated by | |
8520 | the compiler is incorrect or incomplete. */ | |
df407dfe | 8521 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 8522 | error (_("cannot take slice of non-array")); |
714e53ab | 8523 | |
df407dfe | 8524 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR) |
4c4b4cd2 | 8525 | { |
0b5d8877 | 8526 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8527 | return empty_array (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 PH |
8528 | low_bound); |
8529 | else | |
8530 | { | |
8531 | struct type *arr_type0 = | |
df407dfe | 8532 | to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 | 8533 | NULL, 1); |
0b5d8877 | 8534 | return ada_value_slice_ptr (array, arr_type0, |
529cad9c PH |
8535 | longest_to_int (low_bound), |
8536 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
8537 | } |
8538 | } | |
8539 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8540 | return array; | |
8541 | else if (high_bound < low_bound) | |
df407dfe | 8542 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 8543 | else |
529cad9c PH |
8544 | return ada_value_slice (array, longest_to_int (low_bound), |
8545 | longest_to_int (high_bound)); | |
4c4b4cd2 | 8546 | } |
14f9c5c9 | 8547 | |
4c4b4cd2 PH |
8548 | case UNOP_IN_RANGE: |
8549 | (*pos) += 2; | |
8550 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8551 | type = exp->elts[pc + 1].type; | |
14f9c5c9 | 8552 | |
14f9c5c9 | 8553 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 8554 | goto nosideret; |
14f9c5c9 | 8555 | |
4c4b4cd2 PH |
8556 | switch (TYPE_CODE (type)) |
8557 | { | |
8558 | default: | |
e1d5a0d2 PH |
8559 | lim_warning (_("Membership test incompletely implemented; " |
8560 | "always returns true")); | |
4c4b4cd2 PH |
8561 | return value_from_longest (builtin_type_int, (LONGEST) 1); |
8562 | ||
8563 | case TYPE_CODE_RANGE: | |
76a01679 | 8564 | arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type)); |
4c4b4cd2 PH |
8565 | arg3 = value_from_longest (builtin_type_int, |
8566 | TYPE_HIGH_BOUND (type)); | |
8567 | return | |
8568 | value_from_longest (builtin_type_int, | |
8569 | (value_less (arg1, arg3) | |
8570 | || value_equal (arg1, arg3)) | |
8571 | && (value_less (arg2, arg1) | |
8572 | || value_equal (arg2, arg1))); | |
8573 | } | |
8574 | ||
8575 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 8576 | (*pos) += 2; |
4c4b4cd2 PH |
8577 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8578 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 8579 | |
4c4b4cd2 PH |
8580 | if (noside == EVAL_SKIP) |
8581 | goto nosideret; | |
14f9c5c9 | 8582 | |
4c4b4cd2 PH |
8583 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8584 | return value_zero (builtin_type_int, not_lval); | |
14f9c5c9 | 8585 | |
4c4b4cd2 | 8586 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 8587 | |
df407dfe | 8588 | if (tem < 1 || tem > ada_array_arity (value_type (arg2))) |
323e0a4a | 8589 | error (_("invalid dimension number to 'range")); |
14f9c5c9 | 8590 | |
4c4b4cd2 PH |
8591 | arg3 = ada_array_bound (arg2, tem, 1); |
8592 | arg2 = ada_array_bound (arg2, tem, 0); | |
d2e4a39e | 8593 | |
4c4b4cd2 PH |
8594 | return |
8595 | value_from_longest (builtin_type_int, | |
8596 | (value_less (arg1, arg3) | |
8597 | || value_equal (arg1, arg3)) | |
8598 | && (value_less (arg2, arg1) | |
8599 | || value_equal (arg2, arg1))); | |
8600 | ||
8601 | case TERNOP_IN_RANGE: | |
8602 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8603 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8604 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8605 | ||
8606 | if (noside == EVAL_SKIP) | |
8607 | goto nosideret; | |
8608 | ||
8609 | return | |
8610 | value_from_longest (builtin_type_int, | |
8611 | (value_less (arg1, arg3) | |
8612 | || value_equal (arg1, arg3)) | |
8613 | && (value_less (arg2, arg1) | |
8614 | || value_equal (arg2, arg1))); | |
8615 | ||
8616 | case OP_ATR_FIRST: | |
8617 | case OP_ATR_LAST: | |
8618 | case OP_ATR_LENGTH: | |
8619 | { | |
76a01679 JB |
8620 | struct type *type_arg; |
8621 | if (exp->elts[*pos].opcode == OP_TYPE) | |
8622 | { | |
8623 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
8624 | arg1 = NULL; | |
8625 | type_arg = exp->elts[pc + 2].type; | |
8626 | } | |
8627 | else | |
8628 | { | |
8629 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8630 | type_arg = NULL; | |
8631 | } | |
8632 | ||
8633 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 8634 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
8635 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
8636 | *pos += 4; | |
8637 | ||
8638 | if (noside == EVAL_SKIP) | |
8639 | goto nosideret; | |
8640 | ||
8641 | if (type_arg == NULL) | |
8642 | { | |
8643 | arg1 = ada_coerce_ref (arg1); | |
8644 | ||
df407dfe | 8645 | if (ada_is_packed_array_type (value_type (arg1))) |
76a01679 JB |
8646 | arg1 = ada_coerce_to_simple_array (arg1); |
8647 | ||
df407dfe | 8648 | if (tem < 1 || tem > ada_array_arity (value_type (arg1))) |
323e0a4a | 8649 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8650 | ada_attribute_name (op)); |
8651 | ||
8652 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8653 | { | |
df407dfe | 8654 | type = ada_index_type (value_type (arg1), tem); |
76a01679 JB |
8655 | if (type == NULL) |
8656 | error | |
323e0a4a | 8657 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8658 | return allocate_value (type); |
8659 | } | |
8660 | ||
8661 | switch (op) | |
8662 | { | |
8663 | default: /* Should never happen. */ | |
323e0a4a | 8664 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8665 | case OP_ATR_FIRST: |
8666 | return ada_array_bound (arg1, tem, 0); | |
8667 | case OP_ATR_LAST: | |
8668 | return ada_array_bound (arg1, tem, 1); | |
8669 | case OP_ATR_LENGTH: | |
8670 | return ada_array_length (arg1, tem); | |
8671 | } | |
8672 | } | |
8673 | else if (discrete_type_p (type_arg)) | |
8674 | { | |
8675 | struct type *range_type; | |
8676 | char *name = ada_type_name (type_arg); | |
8677 | range_type = NULL; | |
8678 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
8679 | range_type = | |
8680 | to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); | |
8681 | if (range_type == NULL) | |
8682 | range_type = type_arg; | |
8683 | switch (op) | |
8684 | { | |
8685 | default: | |
323e0a4a | 8686 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8687 | case OP_ATR_FIRST: |
8688 | return discrete_type_low_bound (range_type); | |
8689 | case OP_ATR_LAST: | |
8690 | return discrete_type_high_bound (range_type); | |
8691 | case OP_ATR_LENGTH: | |
323e0a4a | 8692 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
8693 | } |
8694 | } | |
8695 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 8696 | error (_("unimplemented type attribute")); |
76a01679 JB |
8697 | else |
8698 | { | |
8699 | LONGEST low, high; | |
8700 | ||
8701 | if (ada_is_packed_array_type (type_arg)) | |
8702 | type_arg = decode_packed_array_type (type_arg); | |
8703 | ||
8704 | if (tem < 1 || tem > ada_array_arity (type_arg)) | |
323e0a4a | 8705 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8706 | ada_attribute_name (op)); |
8707 | ||
8708 | type = ada_index_type (type_arg, tem); | |
8709 | if (type == NULL) | |
8710 | error | |
323e0a4a | 8711 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8712 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8713 | return allocate_value (type); | |
8714 | ||
8715 | switch (op) | |
8716 | { | |
8717 | default: | |
323e0a4a | 8718 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8719 | case OP_ATR_FIRST: |
8720 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
8721 | return value_from_longest (type, low); | |
8722 | case OP_ATR_LAST: | |
8723 | high = ada_array_bound_from_type (type_arg, tem, 1, &type); | |
8724 | return value_from_longest (type, high); | |
8725 | case OP_ATR_LENGTH: | |
8726 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
8727 | high = ada_array_bound_from_type (type_arg, tem, 1, NULL); | |
8728 | return value_from_longest (type, high - low + 1); | |
8729 | } | |
8730 | } | |
14f9c5c9 AS |
8731 | } |
8732 | ||
4c4b4cd2 PH |
8733 | case OP_ATR_TAG: |
8734 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8735 | if (noside == EVAL_SKIP) | |
76a01679 | 8736 | goto nosideret; |
4c4b4cd2 PH |
8737 | |
8738 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 8739 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
8740 | |
8741 | return ada_value_tag (arg1); | |
8742 | ||
8743 | case OP_ATR_MIN: | |
8744 | case OP_ATR_MAX: | |
8745 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
8746 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8747 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8748 | if (noside == EVAL_SKIP) | |
76a01679 | 8749 | goto nosideret; |
d2e4a39e | 8750 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8751 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8752 | else |
76a01679 JB |
8753 | return value_binop (arg1, arg2, |
8754 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
14f9c5c9 | 8755 | |
4c4b4cd2 PH |
8756 | case OP_ATR_MODULUS: |
8757 | { | |
76a01679 JB |
8758 | struct type *type_arg = exp->elts[pc + 2].type; |
8759 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
4c4b4cd2 | 8760 | |
76a01679 JB |
8761 | if (noside == EVAL_SKIP) |
8762 | goto nosideret; | |
4c4b4cd2 | 8763 | |
76a01679 | 8764 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 8765 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 8766 | |
76a01679 JB |
8767 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
8768 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
8769 | } |
8770 | ||
8771 | ||
8772 | case OP_ATR_POS: | |
8773 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
8774 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8775 | if (noside == EVAL_SKIP) | |
76a01679 | 8776 | goto nosideret; |
4c4b4cd2 | 8777 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 8778 | return value_zero (builtin_type_int, not_lval); |
14f9c5c9 | 8779 | else |
76a01679 | 8780 | return value_pos_atr (arg1); |
14f9c5c9 | 8781 | |
4c4b4cd2 PH |
8782 | case OP_ATR_SIZE: |
8783 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8784 | if (noside == EVAL_SKIP) | |
76a01679 | 8785 | goto nosideret; |
4c4b4cd2 | 8786 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 8787 | return value_zero (builtin_type_int, not_lval); |
4c4b4cd2 | 8788 | else |
72d5681a | 8789 | return value_from_longest (builtin_type_int, |
76a01679 | 8790 | TARGET_CHAR_BIT |
df407dfe | 8791 | * TYPE_LENGTH (value_type (arg1))); |
4c4b4cd2 PH |
8792 | |
8793 | case OP_ATR_VAL: | |
8794 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 8795 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 8796 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 8797 | if (noside == EVAL_SKIP) |
76a01679 | 8798 | goto nosideret; |
4c4b4cd2 | 8799 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8800 | return value_zero (type, not_lval); |
4c4b4cd2 | 8801 | else |
76a01679 | 8802 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
8803 | |
8804 | case BINOP_EXP: | |
8805 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8806 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8807 | if (noside == EVAL_SKIP) | |
8808 | goto nosideret; | |
8809 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 8810 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 PH |
8811 | else |
8812 | return value_binop (arg1, arg2, op); | |
8813 | ||
8814 | case UNOP_PLUS: | |
8815 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8816 | if (noside == EVAL_SKIP) | |
8817 | goto nosideret; | |
8818 | else | |
8819 | return arg1; | |
8820 | ||
8821 | case UNOP_ABS: | |
8822 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8823 | if (noside == EVAL_SKIP) | |
8824 | goto nosideret; | |
df407dfe | 8825 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 8826 | return value_neg (arg1); |
14f9c5c9 | 8827 | else |
4c4b4cd2 | 8828 | return arg1; |
14f9c5c9 AS |
8829 | |
8830 | case UNOP_IND: | |
8831 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
61ee279c | 8832 | expect_type = TYPE_TARGET_TYPE (ada_check_typedef (expect_type)); |
14f9c5c9 AS |
8833 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
8834 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8835 | goto nosideret; |
df407dfe | 8836 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 8837 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
8838 | { |
8839 | if (ada_is_array_descriptor_type (type)) | |
8840 | /* GDB allows dereferencing GNAT array descriptors. */ | |
8841 | { | |
8842 | struct type *arrType = ada_type_of_array (arg1, 0); | |
8843 | if (arrType == NULL) | |
323e0a4a | 8844 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 8845 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
8846 | } |
8847 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
8848 | || TYPE_CODE (type) == TYPE_CODE_REF | |
8849 | /* In C you can dereference an array to get the 1st elt. */ | |
8850 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
8851 | { |
8852 | type = to_static_fixed_type | |
8853 | (ada_aligned_type | |
8854 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
8855 | check_size (type); | |
8856 | return value_zero (type, lval_memory); | |
8857 | } | |
4c4b4cd2 PH |
8858 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
8859 | /* GDB allows dereferencing an int. */ | |
8860 | return value_zero (builtin_type_int, lval_memory); | |
8861 | else | |
323e0a4a | 8862 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 8863 | } |
76a01679 | 8864 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 8865 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 8866 | |
4c4b4cd2 PH |
8867 | if (ada_is_array_descriptor_type (type)) |
8868 | /* GDB allows dereferencing GNAT array descriptors. */ | |
8869 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 8870 | else |
4c4b4cd2 | 8871 | return ada_value_ind (arg1); |
14f9c5c9 AS |
8872 | |
8873 | case STRUCTOP_STRUCT: | |
8874 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
8875 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
8876 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8877 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8878 | goto nosideret; |
14f9c5c9 | 8879 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8880 | { |
df407dfe | 8881 | struct type *type1 = value_type (arg1); |
76a01679 JB |
8882 | if (ada_is_tagged_type (type1, 1)) |
8883 | { | |
8884 | type = ada_lookup_struct_elt_type (type1, | |
8885 | &exp->elts[pc + 2].string, | |
8886 | 1, 1, NULL); | |
8887 | if (type == NULL) | |
8888 | /* In this case, we assume that the field COULD exist | |
8889 | in some extension of the type. Return an object of | |
8890 | "type" void, which will match any formal | |
8891 | (see ada_type_match). */ | |
8892 | return value_zero (builtin_type_void, lval_memory); | |
8893 | } | |
8894 | else | |
8895 | type = | |
8896 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
8897 | 0, NULL); | |
8898 | ||
8899 | return value_zero (ada_aligned_type (type), lval_memory); | |
8900 | } | |
14f9c5c9 | 8901 | else |
76a01679 JB |
8902 | return |
8903 | ada_to_fixed_value (unwrap_value | |
8904 | (ada_value_struct_elt | |
03ee6b2e | 8905 | (arg1, &exp->elts[pc + 2].string, 0))); |
14f9c5c9 | 8906 | case OP_TYPE: |
4c4b4cd2 PH |
8907 | /* The value is not supposed to be used. This is here to make it |
8908 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
8909 | (*pos) += 2; |
8910 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8911 | goto nosideret; |
14f9c5c9 | 8912 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 8913 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 8914 | else |
323e0a4a | 8915 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
8916 | |
8917 | case OP_AGGREGATE: | |
8918 | case OP_CHOICES: | |
8919 | case OP_OTHERS: | |
8920 | case OP_DISCRETE_RANGE: | |
8921 | case OP_POSITIONAL: | |
8922 | case OP_NAME: | |
8923 | if (noside == EVAL_NORMAL) | |
8924 | switch (op) | |
8925 | { | |
8926 | case OP_NAME: | |
8927 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 8928 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
8929 | case OP_AGGREGATE: |
8930 | error (_("Aggregates only allowed on the right of an assignment")); | |
8931 | default: | |
e1d5a0d2 | 8932 | internal_error (__FILE__, __LINE__, _("aggregate apparently mangled")); |
52ce6436 PH |
8933 | } |
8934 | ||
8935 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
8936 | *pos += oplen - 1; | |
8937 | for (tem = 0; tem < nargs; tem += 1) | |
8938 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
8939 | goto nosideret; | |
14f9c5c9 AS |
8940 | } |
8941 | ||
8942 | nosideret: | |
8943 | return value_from_longest (builtin_type_long, (LONGEST) 1); | |
8944 | } | |
14f9c5c9 | 8945 | \f |
d2e4a39e | 8946 | |
4c4b4cd2 | 8947 | /* Fixed point */ |
14f9c5c9 AS |
8948 | |
8949 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
8950 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 8951 | Otherwise, return NULL. */ |
14f9c5c9 | 8952 | |
d2e4a39e | 8953 | static const char * |
ebf56fd3 | 8954 | fixed_type_info (struct type *type) |
14f9c5c9 | 8955 | { |
d2e4a39e | 8956 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
8957 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
8958 | ||
d2e4a39e AS |
8959 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
8960 | { | |
14f9c5c9 AS |
8961 | const char *tail = strstr (name, "___XF_"); |
8962 | if (tail == NULL) | |
4c4b4cd2 | 8963 | return NULL; |
d2e4a39e | 8964 | else |
4c4b4cd2 | 8965 | return tail + 5; |
14f9c5c9 AS |
8966 | } |
8967 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
8968 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
8969 | else | |
8970 | return NULL; | |
8971 | } | |
8972 | ||
4c4b4cd2 | 8973 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
8974 | |
8975 | int | |
ebf56fd3 | 8976 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
8977 | { |
8978 | return fixed_type_info (type) != NULL; | |
8979 | } | |
8980 | ||
4c4b4cd2 PH |
8981 | /* Return non-zero iff TYPE represents a System.Address type. */ |
8982 | ||
8983 | int | |
8984 | ada_is_system_address_type (struct type *type) | |
8985 | { | |
8986 | return (TYPE_NAME (type) | |
8987 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
8988 | } | |
8989 | ||
14f9c5c9 AS |
8990 | /* Assuming that TYPE is the representation of an Ada fixed-point |
8991 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 8992 | delta cannot be determined. */ |
14f9c5c9 AS |
8993 | |
8994 | DOUBLEST | |
ebf56fd3 | 8995 | ada_delta (struct type *type) |
14f9c5c9 AS |
8996 | { |
8997 | const char *encoding = fixed_type_info (type); | |
8998 | long num, den; | |
8999 | ||
9000 | if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2) | |
9001 | return -1.0; | |
d2e4a39e | 9002 | else |
14f9c5c9 AS |
9003 | return (DOUBLEST) num / (DOUBLEST) den; |
9004 | } | |
9005 | ||
9006 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 9007 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
9008 | |
9009 | static DOUBLEST | |
ebf56fd3 | 9010 | scaling_factor (struct type *type) |
14f9c5c9 AS |
9011 | { |
9012 | const char *encoding = fixed_type_info (type); | |
9013 | unsigned long num0, den0, num1, den1; | |
9014 | int n; | |
d2e4a39e | 9015 | |
14f9c5c9 AS |
9016 | n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1); |
9017 | ||
9018 | if (n < 2) | |
9019 | return 1.0; | |
9020 | else if (n == 4) | |
9021 | return (DOUBLEST) num1 / (DOUBLEST) den1; | |
d2e4a39e | 9022 | else |
14f9c5c9 AS |
9023 | return (DOUBLEST) num0 / (DOUBLEST) den0; |
9024 | } | |
9025 | ||
9026 | ||
9027 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 9028 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
9029 | |
9030 | DOUBLEST | |
ebf56fd3 | 9031 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 9032 | { |
d2e4a39e | 9033 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
9034 | } |
9035 | ||
4c4b4cd2 PH |
9036 | /* The representation of a fixed-point value of type TYPE |
9037 | corresponding to the value X. */ | |
14f9c5c9 AS |
9038 | |
9039 | LONGEST | |
ebf56fd3 | 9040 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
9041 | { |
9042 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
9043 | } | |
9044 | ||
9045 | ||
4c4b4cd2 | 9046 | /* VAX floating formats */ |
14f9c5c9 AS |
9047 | |
9048 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
9049 | types. */ |
9050 | ||
14f9c5c9 | 9051 | int |
d2e4a39e | 9052 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 9053 | { |
d2e4a39e | 9054 | int name_len = |
14f9c5c9 | 9055 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 9056 | return |
14f9c5c9 | 9057 | name_len > 6 |
d2e4a39e | 9058 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
9059 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
9060 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
9061 | } |
9062 | ||
9063 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
9064 | ada_is_vax_floating_point. */ |
9065 | ||
14f9c5c9 | 9066 | int |
d2e4a39e | 9067 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 9068 | { |
d2e4a39e | 9069 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
9070 | } |
9071 | ||
4c4b4cd2 | 9072 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 9073 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
9074 | ada_is_vax_floating_type (TYPE). */ |
9075 | ||
d2e4a39e AS |
9076 | struct value * |
9077 | ada_vax_float_print_function (struct type *type) | |
9078 | { | |
9079 | switch (ada_vax_float_type_suffix (type)) | |
9080 | { | |
9081 | case 'F': | |
9082 | return get_var_value ("DEBUG_STRING_F", 0); | |
9083 | case 'D': | |
9084 | return get_var_value ("DEBUG_STRING_D", 0); | |
9085 | case 'G': | |
9086 | return get_var_value ("DEBUG_STRING_G", 0); | |
9087 | default: | |
323e0a4a | 9088 | error (_("invalid VAX floating-point type")); |
d2e4a39e | 9089 | } |
14f9c5c9 | 9090 | } |
14f9c5c9 | 9091 | \f |
d2e4a39e | 9092 | |
4c4b4cd2 | 9093 | /* Range types */ |
14f9c5c9 AS |
9094 | |
9095 | /* Scan STR beginning at position K for a discriminant name, and | |
9096 | return the value of that discriminant field of DVAL in *PX. If | |
9097 | PNEW_K is not null, put the position of the character beyond the | |
9098 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 9099 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
9100 | |
9101 | static int | |
07d8f827 | 9102 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 9103 | int *pnew_k) |
14f9c5c9 AS |
9104 | { |
9105 | static char *bound_buffer = NULL; | |
9106 | static size_t bound_buffer_len = 0; | |
9107 | char *bound; | |
9108 | char *pend; | |
d2e4a39e | 9109 | struct value *bound_val; |
14f9c5c9 AS |
9110 | |
9111 | if (dval == NULL || str == NULL || str[k] == '\0') | |
9112 | return 0; | |
9113 | ||
d2e4a39e | 9114 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
9115 | if (pend == NULL) |
9116 | { | |
d2e4a39e | 9117 | bound = str + k; |
14f9c5c9 AS |
9118 | k += strlen (bound); |
9119 | } | |
d2e4a39e | 9120 | else |
14f9c5c9 | 9121 | { |
d2e4a39e | 9122 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 9123 | bound = bound_buffer; |
d2e4a39e AS |
9124 | strncpy (bound_buffer, str + k, pend - (str + k)); |
9125 | bound[pend - (str + k)] = '\0'; | |
9126 | k = pend - str; | |
14f9c5c9 | 9127 | } |
d2e4a39e | 9128 | |
df407dfe | 9129 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
9130 | if (bound_val == NULL) |
9131 | return 0; | |
9132 | ||
9133 | *px = value_as_long (bound_val); | |
9134 | if (pnew_k != NULL) | |
9135 | *pnew_k = k; | |
9136 | return 1; | |
9137 | } | |
9138 | ||
9139 | /* Value of variable named NAME in the current environment. If | |
9140 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
9141 | otherwise causes an error with message ERR_MSG. */ |
9142 | ||
d2e4a39e AS |
9143 | static struct value * |
9144 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 9145 | { |
4c4b4cd2 | 9146 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
9147 | int nsyms; |
9148 | ||
4c4b4cd2 PH |
9149 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
9150 | &syms); | |
14f9c5c9 AS |
9151 | |
9152 | if (nsyms != 1) | |
9153 | { | |
9154 | if (err_msg == NULL) | |
4c4b4cd2 | 9155 | return 0; |
14f9c5c9 | 9156 | else |
8a3fe4f8 | 9157 | error (("%s"), err_msg); |
14f9c5c9 AS |
9158 | } |
9159 | ||
4c4b4cd2 | 9160 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 9161 | } |
d2e4a39e | 9162 | |
14f9c5c9 | 9163 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
9164 | no such variable found, returns 0, and sets *FLAG to 0. If |
9165 | successful, sets *FLAG to 1. */ | |
9166 | ||
14f9c5c9 | 9167 | LONGEST |
4c4b4cd2 | 9168 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 9169 | { |
4c4b4cd2 | 9170 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 9171 | |
14f9c5c9 AS |
9172 | if (var_val == 0) |
9173 | { | |
9174 | if (flag != NULL) | |
4c4b4cd2 | 9175 | *flag = 0; |
14f9c5c9 AS |
9176 | return 0; |
9177 | } | |
9178 | else | |
9179 | { | |
9180 | if (flag != NULL) | |
4c4b4cd2 | 9181 | *flag = 1; |
14f9c5c9 AS |
9182 | return value_as_long (var_val); |
9183 | } | |
9184 | } | |
d2e4a39e | 9185 | |
14f9c5c9 AS |
9186 | |
9187 | /* Return a range type whose base type is that of the range type named | |
9188 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 9189 | from NAME according to the GNAT range encoding conventions. |
14f9c5c9 AS |
9190 | Extract discriminant values, if needed, from DVAL. If a new type |
9191 | must be created, allocate in OBJFILE's space. The bounds | |
9192 | information, in general, is encoded in NAME, the base type given in | |
4c4b4cd2 | 9193 | the named range type. */ |
14f9c5c9 | 9194 | |
d2e4a39e | 9195 | static struct type * |
ebf56fd3 | 9196 | to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) |
14f9c5c9 AS |
9197 | { |
9198 | struct type *raw_type = ada_find_any_type (name); | |
9199 | struct type *base_type; | |
d2e4a39e | 9200 | char *subtype_info; |
14f9c5c9 AS |
9201 | |
9202 | if (raw_type == NULL) | |
9203 | base_type = builtin_type_int; | |
9204 | else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) | |
9205 | base_type = TYPE_TARGET_TYPE (raw_type); | |
9206 | else | |
9207 | base_type = raw_type; | |
9208 | ||
9209 | subtype_info = strstr (name, "___XD"); | |
9210 | if (subtype_info == NULL) | |
9211 | return raw_type; | |
9212 | else | |
9213 | { | |
9214 | static char *name_buf = NULL; | |
9215 | static size_t name_len = 0; | |
9216 | int prefix_len = subtype_info - name; | |
9217 | LONGEST L, U; | |
9218 | struct type *type; | |
9219 | char *bounds_str; | |
9220 | int n; | |
9221 | ||
9222 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
9223 | strncpy (name_buf, name, prefix_len); | |
9224 | name_buf[prefix_len] = '\0'; | |
9225 | ||
9226 | subtype_info += 5; | |
9227 | bounds_str = strchr (subtype_info, '_'); | |
9228 | n = 1; | |
9229 | ||
d2e4a39e | 9230 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
9231 | { |
9232 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
9233 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
9234 | return raw_type; | |
9235 | if (bounds_str[n] == '_') | |
9236 | n += 2; | |
9237 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
9238 | n += 1; | |
9239 | subtype_info += 1; | |
9240 | } | |
d2e4a39e | 9241 | else |
4c4b4cd2 PH |
9242 | { |
9243 | int ok; | |
9244 | strcpy (name_buf + prefix_len, "___L"); | |
9245 | L = get_int_var_value (name_buf, &ok); | |
9246 | if (!ok) | |
9247 | { | |
323e0a4a | 9248 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
9249 | L = 1; |
9250 | } | |
9251 | } | |
14f9c5c9 | 9252 | |
d2e4a39e | 9253 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
9254 | { |
9255 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
9256 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
9257 | return raw_type; | |
9258 | } | |
d2e4a39e | 9259 | else |
4c4b4cd2 PH |
9260 | { |
9261 | int ok; | |
9262 | strcpy (name_buf + prefix_len, "___U"); | |
9263 | U = get_int_var_value (name_buf, &ok); | |
9264 | if (!ok) | |
9265 | { | |
323e0a4a | 9266 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
9267 | U = L; |
9268 | } | |
9269 | } | |
14f9c5c9 | 9270 | |
d2e4a39e | 9271 | if (objfile == NULL) |
4c4b4cd2 | 9272 | objfile = TYPE_OBJFILE (base_type); |
14f9c5c9 | 9273 | type = create_range_type (alloc_type (objfile), base_type, L, U); |
d2e4a39e | 9274 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
9275 | return type; |
9276 | } | |
9277 | } | |
9278 | ||
4c4b4cd2 PH |
9279 | /* True iff NAME is the name of a range type. */ |
9280 | ||
14f9c5c9 | 9281 | int |
d2e4a39e | 9282 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
9283 | { |
9284 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 9285 | } |
14f9c5c9 | 9286 | \f |
d2e4a39e | 9287 | |
4c4b4cd2 PH |
9288 | /* Modular types */ |
9289 | ||
9290 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 9291 | |
14f9c5c9 | 9292 | int |
d2e4a39e | 9293 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 9294 | { |
4c4b4cd2 | 9295 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
9296 | |
9297 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
4c4b4cd2 PH |
9298 | && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM |
9299 | && TYPE_UNSIGNED (subranged_type)); | |
14f9c5c9 AS |
9300 | } |
9301 | ||
4c4b4cd2 PH |
9302 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
9303 | ||
61ee279c | 9304 | ULONGEST |
d2e4a39e | 9305 | ada_modulus (struct type * type) |
14f9c5c9 | 9306 | { |
61ee279c | 9307 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 9308 | } |
d2e4a39e | 9309 | \f |
f7f9143b JB |
9310 | |
9311 | /* Ada exception catchpoint support: | |
9312 | --------------------------------- | |
9313 | ||
9314 | We support 3 kinds of exception catchpoints: | |
9315 | . catchpoints on Ada exceptions | |
9316 | . catchpoints on unhandled Ada exceptions | |
9317 | . catchpoints on failed assertions | |
9318 | ||
9319 | Exceptions raised during failed assertions, or unhandled exceptions | |
9320 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
9321 | However, we can easily differentiate these two special cases, and having | |
9322 | the option to distinguish these two cases from the rest can be useful | |
9323 | to zero-in on certain situations. | |
9324 | ||
9325 | Exception catchpoints are a specialized form of breakpoint, | |
9326 | since they rely on inserting breakpoints inside known routines | |
9327 | of the GNAT runtime. The implementation therefore uses a standard | |
9328 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
9329 | of breakpoint_ops. | |
9330 | ||
0259addd JB |
9331 | Support in the runtime for exception catchpoints have been changed |
9332 | a few times already, and these changes affect the implementation | |
9333 | of these catchpoints. In order to be able to support several | |
9334 | variants of the runtime, we use a sniffer that will determine | |
9335 | the runtime variant used by the program being debugged. | |
9336 | ||
f7f9143b JB |
9337 | At this time, we do not support the use of conditions on Ada exception |
9338 | catchpoints. The COND and COND_STRING fields are therefore set | |
9339 | to NULL (most of the time, see below). | |
9340 | ||
9341 | Conditions where EXP_STRING, COND, and COND_STRING are used: | |
9342 | ||
9343 | When a user specifies the name of a specific exception in the case | |
9344 | of catchpoints on Ada exceptions, we store the name of that exception | |
9345 | in the EXP_STRING. We then translate this request into an actual | |
9346 | condition stored in COND_STRING, and then parse it into an expression | |
9347 | stored in COND. */ | |
9348 | ||
9349 | /* The different types of catchpoints that we introduced for catching | |
9350 | Ada exceptions. */ | |
9351 | ||
9352 | enum exception_catchpoint_kind | |
9353 | { | |
9354 | ex_catch_exception, | |
9355 | ex_catch_exception_unhandled, | |
9356 | ex_catch_assert | |
9357 | }; | |
9358 | ||
0259addd JB |
9359 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
9360 | ||
9361 | /* A structure that describes how to support exception catchpoints | |
9362 | for a given executable. */ | |
9363 | ||
9364 | struct exception_support_info | |
9365 | { | |
9366 | /* The name of the symbol to break on in order to insert | |
9367 | a catchpoint on exceptions. */ | |
9368 | const char *catch_exception_sym; | |
9369 | ||
9370 | /* The name of the symbol to break on in order to insert | |
9371 | a catchpoint on unhandled exceptions. */ | |
9372 | const char *catch_exception_unhandled_sym; | |
9373 | ||
9374 | /* The name of the symbol to break on in order to insert | |
9375 | a catchpoint on failed assertions. */ | |
9376 | const char *catch_assert_sym; | |
9377 | ||
9378 | /* Assuming that the inferior just triggered an unhandled exception | |
9379 | catchpoint, this function is responsible for returning the address | |
9380 | in inferior memory where the name of that exception is stored. | |
9381 | Return zero if the address could not be computed. */ | |
9382 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
9383 | }; | |
9384 | ||
9385 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
9386 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
9387 | ||
9388 | /* The following exception support info structure describes how to | |
9389 | implement exception catchpoints with the latest version of the | |
9390 | Ada runtime (as of 2007-03-06). */ | |
9391 | ||
9392 | static const struct exception_support_info default_exception_support_info = | |
9393 | { | |
9394 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
9395 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9396 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9397 | ada_unhandled_exception_name_addr | |
9398 | }; | |
9399 | ||
9400 | /* The following exception support info structure describes how to | |
9401 | implement exception catchpoints with a slightly older version | |
9402 | of the Ada runtime. */ | |
9403 | ||
9404 | static const struct exception_support_info exception_support_info_fallback = | |
9405 | { | |
9406 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
9407 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9408 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9409 | ada_unhandled_exception_name_addr_from_raise | |
9410 | }; | |
9411 | ||
9412 | /* For each executable, we sniff which exception info structure to use | |
9413 | and cache it in the following global variable. */ | |
9414 | ||
9415 | static const struct exception_support_info *exception_info = NULL; | |
9416 | ||
9417 | /* Inspect the Ada runtime and determine which exception info structure | |
9418 | should be used to provide support for exception catchpoints. | |
9419 | ||
9420 | This function will always set exception_info, or raise an error. */ | |
9421 | ||
9422 | static void | |
9423 | ada_exception_support_info_sniffer (void) | |
9424 | { | |
9425 | struct symbol *sym; | |
9426 | ||
9427 | /* If the exception info is already known, then no need to recompute it. */ | |
9428 | if (exception_info != NULL) | |
9429 | return; | |
9430 | ||
9431 | /* Check the latest (default) exception support info. */ | |
9432 | sym = standard_lookup (default_exception_support_info.catch_exception_sym, | |
9433 | NULL, VAR_DOMAIN); | |
9434 | if (sym != NULL) | |
9435 | { | |
9436 | exception_info = &default_exception_support_info; | |
9437 | return; | |
9438 | } | |
9439 | ||
9440 | /* Try our fallback exception suport info. */ | |
9441 | sym = standard_lookup (exception_support_info_fallback.catch_exception_sym, | |
9442 | NULL, VAR_DOMAIN); | |
9443 | if (sym != NULL) | |
9444 | { | |
9445 | exception_info = &exception_support_info_fallback; | |
9446 | return; | |
9447 | } | |
9448 | ||
9449 | /* Sometimes, it is normal for us to not be able to find the routine | |
9450 | we are looking for. This happens when the program is linked with | |
9451 | the shared version of the GNAT runtime, and the program has not been | |
9452 | started yet. Inform the user of these two possible causes if | |
9453 | applicable. */ | |
9454 | ||
9455 | if (ada_update_initial_language (language_unknown, NULL) != language_ada) | |
9456 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); | |
9457 | ||
9458 | /* If the symbol does not exist, then check that the program is | |
9459 | already started, to make sure that shared libraries have been | |
9460 | loaded. If it is not started, this may mean that the symbol is | |
9461 | in a shared library. */ | |
9462 | ||
9463 | if (ptid_get_pid (inferior_ptid) == 0) | |
9464 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
9465 | ||
9466 | /* At this point, we know that we are debugging an Ada program and | |
9467 | that the inferior has been started, but we still are not able to | |
9468 | find the run-time symbols. That can mean that we are in | |
9469 | configurable run time mode, or that a-except as been optimized | |
9470 | out by the linker... In any case, at this point it is not worth | |
9471 | supporting this feature. */ | |
9472 | ||
9473 | error (_("Cannot insert catchpoints in this configuration.")); | |
9474 | } | |
9475 | ||
9476 | /* An observer of "executable_changed" events. | |
9477 | Its role is to clear certain cached values that need to be recomputed | |
9478 | each time a new executable is loaded by GDB. */ | |
9479 | ||
9480 | static void | |
9481 | ada_executable_changed_observer (void *unused) | |
9482 | { | |
9483 | /* If the executable changed, then it is possible that the Ada runtime | |
9484 | is different. So we need to invalidate the exception support info | |
9485 | cache. */ | |
9486 | exception_info = NULL; | |
9487 | } | |
9488 | ||
f7f9143b JB |
9489 | /* Return the name of the function at PC, NULL if could not find it. |
9490 | This function only checks the debugging information, not the symbol | |
9491 | table. */ | |
9492 | ||
9493 | static char * | |
9494 | function_name_from_pc (CORE_ADDR pc) | |
9495 | { | |
9496 | char *func_name; | |
9497 | ||
9498 | if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) | |
9499 | return NULL; | |
9500 | ||
9501 | return func_name; | |
9502 | } | |
9503 | ||
9504 | /* True iff FRAME is very likely to be that of a function that is | |
9505 | part of the runtime system. This is all very heuristic, but is | |
9506 | intended to be used as advice as to what frames are uninteresting | |
9507 | to most users. */ | |
9508 | ||
9509 | static int | |
9510 | is_known_support_routine (struct frame_info *frame) | |
9511 | { | |
4ed6b5be | 9512 | struct symtab_and_line sal; |
f7f9143b JB |
9513 | char *func_name; |
9514 | int i; | |
f7f9143b | 9515 | |
4ed6b5be JB |
9516 | /* If this code does not have any debugging information (no symtab), |
9517 | This cannot be any user code. */ | |
f7f9143b | 9518 | |
4ed6b5be | 9519 | find_frame_sal (frame, &sal); |
f7f9143b JB |
9520 | if (sal.symtab == NULL) |
9521 | return 1; | |
9522 | ||
4ed6b5be JB |
9523 | /* If there is a symtab, but the associated source file cannot be |
9524 | located, then assume this is not user code: Selecting a frame | |
9525 | for which we cannot display the code would not be very helpful | |
9526 | for the user. This should also take care of case such as VxWorks | |
9527 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 9528 | |
9bbc9174 | 9529 | if (symtab_to_fullname (sal.symtab) == NULL) |
f7f9143b JB |
9530 | return 1; |
9531 | ||
4ed6b5be JB |
9532 | /* Check the unit filename againt the Ada runtime file naming. |
9533 | We also check the name of the objfile against the name of some | |
9534 | known system libraries that sometimes come with debugging info | |
9535 | too. */ | |
9536 | ||
f7f9143b JB |
9537 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
9538 | { | |
9539 | re_comp (known_runtime_file_name_patterns[i]); | |
9540 | if (re_exec (sal.symtab->filename)) | |
9541 | return 1; | |
4ed6b5be JB |
9542 | if (sal.symtab->objfile != NULL |
9543 | && re_exec (sal.symtab->objfile->name)) | |
9544 | return 1; | |
f7f9143b JB |
9545 | } |
9546 | ||
4ed6b5be | 9547 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 9548 | |
4ed6b5be | 9549 | func_name = function_name_from_pc (get_frame_address_in_block (frame)); |
f7f9143b JB |
9550 | if (func_name == NULL) |
9551 | return 1; | |
9552 | ||
9553 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
9554 | { | |
9555 | re_comp (known_auxiliary_function_name_patterns[i]); | |
9556 | if (re_exec (func_name)) | |
9557 | return 1; | |
9558 | } | |
9559 | ||
9560 | return 0; | |
9561 | } | |
9562 | ||
9563 | /* Find the first frame that contains debugging information and that is not | |
9564 | part of the Ada run-time, starting from FI and moving upward. */ | |
9565 | ||
9566 | static void | |
9567 | ada_find_printable_frame (struct frame_info *fi) | |
9568 | { | |
9569 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
9570 | { | |
9571 | if (!is_known_support_routine (fi)) | |
9572 | { | |
9573 | select_frame (fi); | |
9574 | break; | |
9575 | } | |
9576 | } | |
9577 | ||
9578 | } | |
9579 | ||
9580 | /* Assuming that the inferior just triggered an unhandled exception | |
9581 | catchpoint, return the address in inferior memory where the name | |
9582 | of the exception is stored. | |
9583 | ||
9584 | Return zero if the address could not be computed. */ | |
9585 | ||
9586 | static CORE_ADDR | |
9587 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
9588 | { |
9589 | return parse_and_eval_address ("e.full_name"); | |
9590 | } | |
9591 | ||
9592 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
9593 | should be used when the inferior uses an older version of the runtime, | |
9594 | where the exception name needs to be extracted from a specific frame | |
9595 | several frames up in the callstack. */ | |
9596 | ||
9597 | static CORE_ADDR | |
9598 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
9599 | { |
9600 | int frame_level; | |
9601 | struct frame_info *fi; | |
9602 | ||
9603 | /* To determine the name of this exception, we need to select | |
9604 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
9605 | at least 3 levels up, so we simply skip the first 3 frames | |
9606 | without checking the name of their associated function. */ | |
9607 | fi = get_current_frame (); | |
9608 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
9609 | if (fi != NULL) | |
9610 | fi = get_prev_frame (fi); | |
9611 | ||
9612 | while (fi != NULL) | |
9613 | { | |
9614 | const char *func_name = | |
9615 | function_name_from_pc (get_frame_address_in_block (fi)); | |
9616 | if (func_name != NULL | |
0259addd | 9617 | && strcmp (func_name, exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
9618 | break; /* We found the frame we were looking for... */ |
9619 | fi = get_prev_frame (fi); | |
9620 | } | |
9621 | ||
9622 | if (fi == NULL) | |
9623 | return 0; | |
9624 | ||
9625 | select_frame (fi); | |
9626 | return parse_and_eval_address ("id.full_name"); | |
9627 | } | |
9628 | ||
9629 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
9630 | (of any type), return the address in inferior memory where the name | |
9631 | of the exception is stored, if applicable. | |
9632 | ||
9633 | Return zero if the address could not be computed, or if not relevant. */ | |
9634 | ||
9635 | static CORE_ADDR | |
9636 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
9637 | struct breakpoint *b) | |
9638 | { | |
9639 | switch (ex) | |
9640 | { | |
9641 | case ex_catch_exception: | |
9642 | return (parse_and_eval_address ("e.full_name")); | |
9643 | break; | |
9644 | ||
9645 | case ex_catch_exception_unhandled: | |
0259addd | 9646 | return exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
9647 | break; |
9648 | ||
9649 | case ex_catch_assert: | |
9650 | return 0; /* Exception name is not relevant in this case. */ | |
9651 | break; | |
9652 | ||
9653 | default: | |
9654 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9655 | break; | |
9656 | } | |
9657 | ||
9658 | return 0; /* Should never be reached. */ | |
9659 | } | |
9660 | ||
9661 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
9662 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
9663 | When an error is intercepted, a warning with the error message is printed, | |
9664 | and zero is returned. */ | |
9665 | ||
9666 | static CORE_ADDR | |
9667 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
9668 | struct breakpoint *b) | |
9669 | { | |
9670 | struct gdb_exception e; | |
9671 | CORE_ADDR result = 0; | |
9672 | ||
9673 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9674 | { | |
9675 | result = ada_exception_name_addr_1 (ex, b); | |
9676 | } | |
9677 | ||
9678 | if (e.reason < 0) | |
9679 | { | |
9680 | warning (_("failed to get exception name: %s"), e.message); | |
9681 | return 0; | |
9682 | } | |
9683 | ||
9684 | return result; | |
9685 | } | |
9686 | ||
9687 | /* Implement the PRINT_IT method in the breakpoint_ops structure | |
9688 | for all exception catchpoint kinds. */ | |
9689 | ||
9690 | static enum print_stop_action | |
9691 | print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
9692 | { | |
9693 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
9694 | char exception_name[256]; | |
9695 | ||
9696 | if (addr != 0) | |
9697 | { | |
9698 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
9699 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
9700 | } | |
9701 | ||
9702 | ada_find_printable_frame (get_current_frame ()); | |
9703 | ||
9704 | annotate_catchpoint (b->number); | |
9705 | switch (ex) | |
9706 | { | |
9707 | case ex_catch_exception: | |
9708 | if (addr != 0) | |
9709 | printf_filtered (_("\nCatchpoint %d, %s at "), | |
9710 | b->number, exception_name); | |
9711 | else | |
9712 | printf_filtered (_("\nCatchpoint %d, exception at "), b->number); | |
9713 | break; | |
9714 | case ex_catch_exception_unhandled: | |
9715 | if (addr != 0) | |
9716 | printf_filtered (_("\nCatchpoint %d, unhandled %s at "), | |
9717 | b->number, exception_name); | |
9718 | else | |
9719 | printf_filtered (_("\nCatchpoint %d, unhandled exception at "), | |
9720 | b->number); | |
9721 | break; | |
9722 | case ex_catch_assert: | |
9723 | printf_filtered (_("\nCatchpoint %d, failed assertion at "), | |
9724 | b->number); | |
9725 | break; | |
9726 | } | |
9727 | ||
9728 | return PRINT_SRC_AND_LOC; | |
9729 | } | |
9730 | ||
9731 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
9732 | for all exception catchpoint kinds. */ | |
9733 | ||
9734 | static void | |
9735 | print_one_exception (enum exception_catchpoint_kind ex, | |
9736 | struct breakpoint *b, CORE_ADDR *last_addr) | |
9737 | { | |
9738 | if (addressprint) | |
9739 | { | |
9740 | annotate_field (4); | |
9741 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
9742 | } | |
9743 | ||
9744 | annotate_field (5); | |
9745 | *last_addr = b->loc->address; | |
9746 | switch (ex) | |
9747 | { | |
9748 | case ex_catch_exception: | |
9749 | if (b->exp_string != NULL) | |
9750 | { | |
9751 | char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string); | |
9752 | ||
9753 | ui_out_field_string (uiout, "what", msg); | |
9754 | xfree (msg); | |
9755 | } | |
9756 | else | |
9757 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
9758 | ||
9759 | break; | |
9760 | ||
9761 | case ex_catch_exception_unhandled: | |
9762 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
9763 | break; | |
9764 | ||
9765 | case ex_catch_assert: | |
9766 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
9767 | break; | |
9768 | ||
9769 | default: | |
9770 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9771 | break; | |
9772 | } | |
9773 | } | |
9774 | ||
9775 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
9776 | for all exception catchpoint kinds. */ | |
9777 | ||
9778 | static void | |
9779 | print_mention_exception (enum exception_catchpoint_kind ex, | |
9780 | struct breakpoint *b) | |
9781 | { | |
9782 | switch (ex) | |
9783 | { | |
9784 | case ex_catch_exception: | |
9785 | if (b->exp_string != NULL) | |
9786 | printf_filtered (_("Catchpoint %d: `%s' Ada exception"), | |
9787 | b->number, b->exp_string); | |
9788 | else | |
9789 | printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number); | |
9790 | ||
9791 | break; | |
9792 | ||
9793 | case ex_catch_exception_unhandled: | |
9794 | printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"), | |
9795 | b->number); | |
9796 | break; | |
9797 | ||
9798 | case ex_catch_assert: | |
9799 | printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number); | |
9800 | break; | |
9801 | ||
9802 | default: | |
9803 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9804 | break; | |
9805 | } | |
9806 | } | |
9807 | ||
9808 | /* Virtual table for "catch exception" breakpoints. */ | |
9809 | ||
9810 | static enum print_stop_action | |
9811 | print_it_catch_exception (struct breakpoint *b) | |
9812 | { | |
9813 | return print_it_exception (ex_catch_exception, b); | |
9814 | } | |
9815 | ||
9816 | static void | |
9817 | print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr) | |
9818 | { | |
9819 | print_one_exception (ex_catch_exception, b, last_addr); | |
9820 | } | |
9821 | ||
9822 | static void | |
9823 | print_mention_catch_exception (struct breakpoint *b) | |
9824 | { | |
9825 | print_mention_exception (ex_catch_exception, b); | |
9826 | } | |
9827 | ||
9828 | static struct breakpoint_ops catch_exception_breakpoint_ops = | |
9829 | { | |
9830 | print_it_catch_exception, | |
9831 | print_one_catch_exception, | |
9832 | print_mention_catch_exception | |
9833 | }; | |
9834 | ||
9835 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
9836 | ||
9837 | static enum print_stop_action | |
9838 | print_it_catch_exception_unhandled (struct breakpoint *b) | |
9839 | { | |
9840 | return print_it_exception (ex_catch_exception_unhandled, b); | |
9841 | } | |
9842 | ||
9843 | static void | |
9844 | print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr) | |
9845 | { | |
9846 | print_one_exception (ex_catch_exception_unhandled, b, last_addr); | |
9847 | } | |
9848 | ||
9849 | static void | |
9850 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
9851 | { | |
9852 | print_mention_exception (ex_catch_exception_unhandled, b); | |
9853 | } | |
9854 | ||
9855 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = { | |
9856 | print_it_catch_exception_unhandled, | |
9857 | print_one_catch_exception_unhandled, | |
9858 | print_mention_catch_exception_unhandled | |
9859 | }; | |
9860 | ||
9861 | /* Virtual table for "catch assert" breakpoints. */ | |
9862 | ||
9863 | static enum print_stop_action | |
9864 | print_it_catch_assert (struct breakpoint *b) | |
9865 | { | |
9866 | return print_it_exception (ex_catch_assert, b); | |
9867 | } | |
9868 | ||
9869 | static void | |
9870 | print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr) | |
9871 | { | |
9872 | print_one_exception (ex_catch_assert, b, last_addr); | |
9873 | } | |
9874 | ||
9875 | static void | |
9876 | print_mention_catch_assert (struct breakpoint *b) | |
9877 | { | |
9878 | print_mention_exception (ex_catch_assert, b); | |
9879 | } | |
9880 | ||
9881 | static struct breakpoint_ops catch_assert_breakpoint_ops = { | |
9882 | print_it_catch_assert, | |
9883 | print_one_catch_assert, | |
9884 | print_mention_catch_assert | |
9885 | }; | |
9886 | ||
9887 | /* Return non-zero if B is an Ada exception catchpoint. */ | |
9888 | ||
9889 | int | |
9890 | ada_exception_catchpoint_p (struct breakpoint *b) | |
9891 | { | |
9892 | return (b->ops == &catch_exception_breakpoint_ops | |
9893 | || b->ops == &catch_exception_unhandled_breakpoint_ops | |
9894 | || b->ops == &catch_assert_breakpoint_ops); | |
9895 | } | |
9896 | ||
f7f9143b JB |
9897 | /* Return a newly allocated copy of the first space-separated token |
9898 | in ARGSP, and then adjust ARGSP to point immediately after that | |
9899 | token. | |
9900 | ||
9901 | Return NULL if ARGPS does not contain any more tokens. */ | |
9902 | ||
9903 | static char * | |
9904 | ada_get_next_arg (char **argsp) | |
9905 | { | |
9906 | char *args = *argsp; | |
9907 | char *end; | |
9908 | char *result; | |
9909 | ||
9910 | /* Skip any leading white space. */ | |
9911 | ||
9912 | while (isspace (*args)) | |
9913 | args++; | |
9914 | ||
9915 | if (args[0] == '\0') | |
9916 | return NULL; /* No more arguments. */ | |
9917 | ||
9918 | /* Find the end of the current argument. */ | |
9919 | ||
9920 | end = args; | |
9921 | while (*end != '\0' && !isspace (*end)) | |
9922 | end++; | |
9923 | ||
9924 | /* Adjust ARGSP to point to the start of the next argument. */ | |
9925 | ||
9926 | *argsp = end; | |
9927 | ||
9928 | /* Make a copy of the current argument and return it. */ | |
9929 | ||
9930 | result = xmalloc (end - args + 1); | |
9931 | strncpy (result, args, end - args); | |
9932 | result[end - args] = '\0'; | |
9933 | ||
9934 | return result; | |
9935 | } | |
9936 | ||
9937 | /* Split the arguments specified in a "catch exception" command. | |
9938 | Set EX to the appropriate catchpoint type. | |
9939 | Set EXP_STRING to the name of the specific exception if | |
9940 | specified by the user. */ | |
9941 | ||
9942 | static void | |
9943 | catch_ada_exception_command_split (char *args, | |
9944 | enum exception_catchpoint_kind *ex, | |
9945 | char **exp_string) | |
9946 | { | |
9947 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
9948 | char *exception_name; | |
9949 | ||
9950 | exception_name = ada_get_next_arg (&args); | |
9951 | make_cleanup (xfree, exception_name); | |
9952 | ||
9953 | /* Check that we do not have any more arguments. Anything else | |
9954 | is unexpected. */ | |
9955 | ||
9956 | while (isspace (*args)) | |
9957 | args++; | |
9958 | ||
9959 | if (args[0] != '\0') | |
9960 | error (_("Junk at end of expression")); | |
9961 | ||
9962 | discard_cleanups (old_chain); | |
9963 | ||
9964 | if (exception_name == NULL) | |
9965 | { | |
9966 | /* Catch all exceptions. */ | |
9967 | *ex = ex_catch_exception; | |
9968 | *exp_string = NULL; | |
9969 | } | |
9970 | else if (strcmp (exception_name, "unhandled") == 0) | |
9971 | { | |
9972 | /* Catch unhandled exceptions. */ | |
9973 | *ex = ex_catch_exception_unhandled; | |
9974 | *exp_string = NULL; | |
9975 | } | |
9976 | else | |
9977 | { | |
9978 | /* Catch a specific exception. */ | |
9979 | *ex = ex_catch_exception; | |
9980 | *exp_string = exception_name; | |
9981 | } | |
9982 | } | |
9983 | ||
9984 | /* Return the name of the symbol on which we should break in order to | |
9985 | implement a catchpoint of the EX kind. */ | |
9986 | ||
9987 | static const char * | |
9988 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
9989 | { | |
0259addd JB |
9990 | gdb_assert (exception_info != NULL); |
9991 | ||
f7f9143b JB |
9992 | switch (ex) |
9993 | { | |
9994 | case ex_catch_exception: | |
0259addd | 9995 | return (exception_info->catch_exception_sym); |
f7f9143b JB |
9996 | break; |
9997 | case ex_catch_exception_unhandled: | |
0259addd | 9998 | return (exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
9999 | break; |
10000 | case ex_catch_assert: | |
0259addd | 10001 | return (exception_info->catch_assert_sym); |
f7f9143b JB |
10002 | break; |
10003 | default: | |
10004 | internal_error (__FILE__, __LINE__, | |
10005 | _("unexpected catchpoint kind (%d)"), ex); | |
10006 | } | |
10007 | } | |
10008 | ||
10009 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
10010 | of the EX kind. */ | |
10011 | ||
10012 | static struct breakpoint_ops * | |
4b9eee8c | 10013 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
10014 | { |
10015 | switch (ex) | |
10016 | { | |
10017 | case ex_catch_exception: | |
10018 | return (&catch_exception_breakpoint_ops); | |
10019 | break; | |
10020 | case ex_catch_exception_unhandled: | |
10021 | return (&catch_exception_unhandled_breakpoint_ops); | |
10022 | break; | |
10023 | case ex_catch_assert: | |
10024 | return (&catch_assert_breakpoint_ops); | |
10025 | break; | |
10026 | default: | |
10027 | internal_error (__FILE__, __LINE__, | |
10028 | _("unexpected catchpoint kind (%d)"), ex); | |
10029 | } | |
10030 | } | |
10031 | ||
10032 | /* Return the condition that will be used to match the current exception | |
10033 | being raised with the exception that the user wants to catch. This | |
10034 | assumes that this condition is used when the inferior just triggered | |
10035 | an exception catchpoint. | |
10036 | ||
10037 | The string returned is a newly allocated string that needs to be | |
10038 | deallocated later. */ | |
10039 | ||
10040 | static char * | |
10041 | ada_exception_catchpoint_cond_string (const char *exp_string) | |
10042 | { | |
10043 | return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string); | |
10044 | } | |
10045 | ||
10046 | /* Return the expression corresponding to COND_STRING evaluated at SAL. */ | |
10047 | ||
10048 | static struct expression * | |
10049 | ada_parse_catchpoint_condition (char *cond_string, | |
10050 | struct symtab_and_line sal) | |
10051 | { | |
10052 | return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0)); | |
10053 | } | |
10054 | ||
10055 | /* Return the symtab_and_line that should be used to insert an exception | |
10056 | catchpoint of the TYPE kind. | |
10057 | ||
10058 | EX_STRING should contain the name of a specific exception | |
10059 | that the catchpoint should catch, or NULL otherwise. | |
10060 | ||
10061 | The idea behind all the remaining parameters is that their names match | |
10062 | the name of certain fields in the breakpoint structure that are used to | |
10063 | handle exception catchpoints. This function returns the value to which | |
10064 | these fields should be set, depending on the type of catchpoint we need | |
10065 | to create. | |
10066 | ||
10067 | If COND and COND_STRING are both non-NULL, any value they might | |
10068 | hold will be free'ed, and then replaced by newly allocated ones. | |
10069 | These parameters are left untouched otherwise. */ | |
10070 | ||
10071 | static struct symtab_and_line | |
10072 | ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string, | |
10073 | char **addr_string, char **cond_string, | |
10074 | struct expression **cond, struct breakpoint_ops **ops) | |
10075 | { | |
10076 | const char *sym_name; | |
10077 | struct symbol *sym; | |
10078 | struct symtab_and_line sal; | |
10079 | ||
0259addd JB |
10080 | /* First, find out which exception support info to use. */ |
10081 | ada_exception_support_info_sniffer (); | |
10082 | ||
10083 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b JB |
10084 | the Ada exceptions requested by the user. */ |
10085 | ||
10086 | sym_name = ada_exception_sym_name (ex); | |
10087 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
10088 | ||
10089 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
10090 | that should be compiled with debugging information. As a result, we | |
10091 | expect to find that symbol in the symtabs. If we don't find it, then | |
10092 | the target most likely does not support Ada exceptions, or we cannot | |
10093 | insert exception breakpoints yet, because the GNAT runtime hasn't been | |
10094 | loaded yet. */ | |
10095 | ||
10096 | /* brobecker/2006-12-26: It is conceivable that the runtime was compiled | |
10097 | in such a way that no debugging information is produced for the symbol | |
10098 | we are looking for. In this case, we could search the minimal symbols | |
10099 | as a fall-back mechanism. This would still be operating in degraded | |
10100 | mode, however, as we would still be missing the debugging information | |
10101 | that is needed in order to extract the name of the exception being | |
10102 | raised (this name is printed in the catchpoint message, and is also | |
10103 | used when trying to catch a specific exception). We do not handle | |
10104 | this case for now. */ | |
10105 | ||
10106 | if (sym == NULL) | |
0259addd | 10107 | error (_("Unable to break on '%s' in this configuration."), sym_name); |
f7f9143b JB |
10108 | |
10109 | /* Make sure that the symbol we found corresponds to a function. */ | |
10110 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
10111 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
10112 | sym_name, SYMBOL_CLASS (sym)); | |
10113 | ||
10114 | sal = find_function_start_sal (sym, 1); | |
10115 | ||
10116 | /* Set ADDR_STRING. */ | |
10117 | ||
10118 | *addr_string = xstrdup (sym_name); | |
10119 | ||
10120 | /* Set the COND and COND_STRING (if not NULL). */ | |
10121 | ||
10122 | if (cond_string != NULL && cond != NULL) | |
10123 | { | |
10124 | if (*cond_string != NULL) | |
10125 | { | |
10126 | xfree (*cond_string); | |
10127 | *cond_string = NULL; | |
10128 | } | |
10129 | if (*cond != NULL) | |
10130 | { | |
10131 | xfree (*cond); | |
10132 | *cond = NULL; | |
10133 | } | |
10134 | if (exp_string != NULL) | |
10135 | { | |
10136 | *cond_string = ada_exception_catchpoint_cond_string (exp_string); | |
10137 | *cond = ada_parse_catchpoint_condition (*cond_string, sal); | |
10138 | } | |
10139 | } | |
10140 | ||
10141 | /* Set OPS. */ | |
4b9eee8c | 10142 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b JB |
10143 | |
10144 | return sal; | |
10145 | } | |
10146 | ||
10147 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
10148 | ||
10149 | Set TYPE to the appropriate exception catchpoint type. | |
10150 | If the user asked the catchpoint to catch only a specific | |
10151 | exception, then save the exception name in ADDR_STRING. | |
10152 | ||
10153 | See ada_exception_sal for a description of all the remaining | |
10154 | function arguments of this function. */ | |
10155 | ||
10156 | struct symtab_and_line | |
10157 | ada_decode_exception_location (char *args, char **addr_string, | |
10158 | char **exp_string, char **cond_string, | |
10159 | struct expression **cond, | |
10160 | struct breakpoint_ops **ops) | |
10161 | { | |
10162 | enum exception_catchpoint_kind ex; | |
10163 | ||
10164 | catch_ada_exception_command_split (args, &ex, exp_string); | |
10165 | return ada_exception_sal (ex, *exp_string, addr_string, cond_string, | |
10166 | cond, ops); | |
10167 | } | |
10168 | ||
10169 | struct symtab_and_line | |
10170 | ada_decode_assert_location (char *args, char **addr_string, | |
10171 | struct breakpoint_ops **ops) | |
10172 | { | |
10173 | /* Check that no argument where provided at the end of the command. */ | |
10174 | ||
10175 | if (args != NULL) | |
10176 | { | |
10177 | while (isspace (*args)) | |
10178 | args++; | |
10179 | if (*args != '\0') | |
10180 | error (_("Junk at end of arguments.")); | |
10181 | } | |
10182 | ||
10183 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL, | |
10184 | ops); | |
10185 | } | |
10186 | ||
4c4b4cd2 PH |
10187 | /* Operators */ |
10188 | /* Information about operators given special treatment in functions | |
10189 | below. */ | |
10190 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
10191 | ||
10192 | #define ADA_OPERATORS \ | |
10193 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
10194 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
10195 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
10196 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
10197 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
10198 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
10199 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
10200 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
10201 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
10202 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
10203 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
10204 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
10205 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
10206 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
10207 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
10208 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
10209 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
10210 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
10211 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
10212 | |
10213 | static void | |
10214 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
10215 | { | |
10216 | switch (exp->elts[pc - 1].opcode) | |
10217 | { | |
76a01679 | 10218 | default: |
4c4b4cd2 PH |
10219 | operator_length_standard (exp, pc, oplenp, argsp); |
10220 | break; | |
10221 | ||
10222 | #define OP_DEFN(op, len, args, binop) \ | |
10223 | case op: *oplenp = len; *argsp = args; break; | |
10224 | ADA_OPERATORS; | |
10225 | #undef OP_DEFN | |
52ce6436 PH |
10226 | |
10227 | case OP_AGGREGATE: | |
10228 | *oplenp = 3; | |
10229 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
10230 | break; | |
10231 | ||
10232 | case OP_CHOICES: | |
10233 | *oplenp = 3; | |
10234 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
10235 | break; | |
4c4b4cd2 PH |
10236 | } |
10237 | } | |
10238 | ||
10239 | static char * | |
10240 | ada_op_name (enum exp_opcode opcode) | |
10241 | { | |
10242 | switch (opcode) | |
10243 | { | |
76a01679 | 10244 | default: |
4c4b4cd2 | 10245 | return op_name_standard (opcode); |
52ce6436 | 10246 | |
4c4b4cd2 PH |
10247 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
10248 | ADA_OPERATORS; | |
10249 | #undef OP_DEFN | |
52ce6436 PH |
10250 | |
10251 | case OP_AGGREGATE: | |
10252 | return "OP_AGGREGATE"; | |
10253 | case OP_CHOICES: | |
10254 | return "OP_CHOICES"; | |
10255 | case OP_NAME: | |
10256 | return "OP_NAME"; | |
4c4b4cd2 PH |
10257 | } |
10258 | } | |
10259 | ||
10260 | /* As for operator_length, but assumes PC is pointing at the first | |
10261 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 10262 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
10263 | |
10264 | static void | |
76a01679 JB |
10265 | ada_forward_operator_length (struct expression *exp, int pc, |
10266 | int *oplenp, int *argsp) | |
4c4b4cd2 | 10267 | { |
76a01679 | 10268 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
10269 | { |
10270 | default: | |
10271 | *oplenp = *argsp = 0; | |
10272 | break; | |
52ce6436 | 10273 | |
4c4b4cd2 PH |
10274 | #define OP_DEFN(op, len, args, binop) \ |
10275 | case op: *oplenp = len; *argsp = args; break; | |
10276 | ADA_OPERATORS; | |
10277 | #undef OP_DEFN | |
52ce6436 PH |
10278 | |
10279 | case OP_AGGREGATE: | |
10280 | *oplenp = 3; | |
10281 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
10282 | break; | |
10283 | ||
10284 | case OP_CHOICES: | |
10285 | *oplenp = 3; | |
10286 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
10287 | break; | |
10288 | ||
10289 | case OP_STRING: | |
10290 | case OP_NAME: | |
10291 | { | |
10292 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
10293 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); | |
10294 | *argsp = 0; | |
10295 | break; | |
10296 | } | |
4c4b4cd2 PH |
10297 | } |
10298 | } | |
10299 | ||
10300 | static int | |
10301 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
10302 | { | |
10303 | enum exp_opcode op = exp->elts[elt].opcode; | |
10304 | int oplen, nargs; | |
10305 | int pc = elt; | |
10306 | int i; | |
76a01679 | 10307 | |
4c4b4cd2 PH |
10308 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
10309 | ||
76a01679 | 10310 | switch (op) |
4c4b4cd2 | 10311 | { |
76a01679 | 10312 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
10313 | case OP_ATR_FIRST: |
10314 | case OP_ATR_LAST: | |
10315 | case OP_ATR_LENGTH: | |
10316 | case OP_ATR_IMAGE: | |
10317 | case OP_ATR_MAX: | |
10318 | case OP_ATR_MIN: | |
10319 | case OP_ATR_MODULUS: | |
10320 | case OP_ATR_POS: | |
10321 | case OP_ATR_SIZE: | |
10322 | case OP_ATR_TAG: | |
10323 | case OP_ATR_VAL: | |
10324 | break; | |
10325 | ||
10326 | case UNOP_IN_RANGE: | |
10327 | case UNOP_QUAL: | |
323e0a4a AC |
10328 | /* XXX: gdb_sprint_host_address, type_sprint */ |
10329 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
10330 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
10331 | fprintf_filtered (stream, " ("); | |
10332 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
10333 | fprintf_filtered (stream, ")"); | |
10334 | break; | |
10335 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
10336 | fprintf_filtered (stream, " (%d)", |
10337 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
10338 | break; |
10339 | case TERNOP_IN_RANGE: | |
10340 | break; | |
10341 | ||
52ce6436 PH |
10342 | case OP_AGGREGATE: |
10343 | case OP_OTHERS: | |
10344 | case OP_DISCRETE_RANGE: | |
10345 | case OP_POSITIONAL: | |
10346 | case OP_CHOICES: | |
10347 | break; | |
10348 | ||
10349 | case OP_NAME: | |
10350 | case OP_STRING: | |
10351 | { | |
10352 | char *name = &exp->elts[elt + 2].string; | |
10353 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
10354 | fprintf_filtered (stream, "Text: `%.*s'", len, name); | |
10355 | break; | |
10356 | } | |
10357 | ||
4c4b4cd2 PH |
10358 | default: |
10359 | return dump_subexp_body_standard (exp, stream, elt); | |
10360 | } | |
10361 | ||
10362 | elt += oplen; | |
10363 | for (i = 0; i < nargs; i += 1) | |
10364 | elt = dump_subexp (exp, stream, elt); | |
10365 | ||
10366 | return elt; | |
10367 | } | |
10368 | ||
10369 | /* The Ada extension of print_subexp (q.v.). */ | |
10370 | ||
76a01679 JB |
10371 | static void |
10372 | ada_print_subexp (struct expression *exp, int *pos, | |
10373 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 10374 | { |
52ce6436 | 10375 | int oplen, nargs, i; |
4c4b4cd2 PH |
10376 | int pc = *pos; |
10377 | enum exp_opcode op = exp->elts[pc].opcode; | |
10378 | ||
10379 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
10380 | ||
52ce6436 | 10381 | *pos += oplen; |
4c4b4cd2 PH |
10382 | switch (op) |
10383 | { | |
10384 | default: | |
52ce6436 | 10385 | *pos -= oplen; |
4c4b4cd2 PH |
10386 | print_subexp_standard (exp, pos, stream, prec); |
10387 | return; | |
10388 | ||
10389 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
10390 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
10391 | return; | |
10392 | ||
10393 | case BINOP_IN_BOUNDS: | |
323e0a4a | 10394 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10395 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10396 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 10397 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10398 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 10399 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
10400 | fprintf_filtered (stream, "(%ld)", |
10401 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
10402 | return; |
10403 | ||
10404 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 10405 | if (prec >= PREC_EQUAL) |
76a01679 | 10406 | fputs_filtered ("(", stream); |
323e0a4a | 10407 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10408 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10409 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10410 | print_subexp (exp, pos, stream, PREC_EQUAL); |
10411 | fputs_filtered (" .. ", stream); | |
10412 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
10413 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
10414 | fputs_filtered (")", stream); |
10415 | return; | |
4c4b4cd2 PH |
10416 | |
10417 | case OP_ATR_FIRST: | |
10418 | case OP_ATR_LAST: | |
10419 | case OP_ATR_LENGTH: | |
10420 | case OP_ATR_IMAGE: | |
10421 | case OP_ATR_MAX: | |
10422 | case OP_ATR_MIN: | |
10423 | case OP_ATR_MODULUS: | |
10424 | case OP_ATR_POS: | |
10425 | case OP_ATR_SIZE: | |
10426 | case OP_ATR_TAG: | |
10427 | case OP_ATR_VAL: | |
4c4b4cd2 | 10428 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
10429 | { |
10430 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
10431 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
10432 | *pos += 3; | |
10433 | } | |
4c4b4cd2 | 10434 | else |
76a01679 | 10435 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
10436 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
10437 | if (nargs > 1) | |
76a01679 JB |
10438 | { |
10439 | int tem; | |
10440 | for (tem = 1; tem < nargs; tem += 1) | |
10441 | { | |
10442 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
10443 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
10444 | } | |
10445 | fputs_filtered (")", stream); | |
10446 | } | |
4c4b4cd2 | 10447 | return; |
14f9c5c9 | 10448 | |
4c4b4cd2 | 10449 | case UNOP_QUAL: |
4c4b4cd2 PH |
10450 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
10451 | fputs_filtered ("'(", stream); | |
10452 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
10453 | fputs_filtered (")", stream); | |
10454 | return; | |
14f9c5c9 | 10455 | |
4c4b4cd2 | 10456 | case UNOP_IN_RANGE: |
323e0a4a | 10457 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10458 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10459 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10460 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); |
10461 | return; | |
52ce6436 PH |
10462 | |
10463 | case OP_DISCRETE_RANGE: | |
10464 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10465 | fputs_filtered ("..", stream); | |
10466 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10467 | return; | |
10468 | ||
10469 | case OP_OTHERS: | |
10470 | fputs_filtered ("others => ", stream); | |
10471 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10472 | return; | |
10473 | ||
10474 | case OP_CHOICES: | |
10475 | for (i = 0; i < nargs-1; i += 1) | |
10476 | { | |
10477 | if (i > 0) | |
10478 | fputs_filtered ("|", stream); | |
10479 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10480 | } | |
10481 | fputs_filtered (" => ", stream); | |
10482 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10483 | return; | |
10484 | ||
10485 | case OP_POSITIONAL: | |
10486 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10487 | return; | |
10488 | ||
10489 | case OP_AGGREGATE: | |
10490 | fputs_filtered ("(", stream); | |
10491 | for (i = 0; i < nargs; i += 1) | |
10492 | { | |
10493 | if (i > 0) | |
10494 | fputs_filtered (", ", stream); | |
10495 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10496 | } | |
10497 | fputs_filtered (")", stream); | |
10498 | return; | |
4c4b4cd2 PH |
10499 | } |
10500 | } | |
14f9c5c9 AS |
10501 | |
10502 | /* Table mapping opcodes into strings for printing operators | |
10503 | and precedences of the operators. */ | |
10504 | ||
d2e4a39e AS |
10505 | static const struct op_print ada_op_print_tab[] = { |
10506 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
10507 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
10508 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
10509 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
10510 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
10511 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
10512 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
10513 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
10514 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
10515 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
10516 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
10517 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
10518 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
10519 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
10520 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
10521 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
10522 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
10523 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
10524 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
10525 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
10526 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
10527 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
10528 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
10529 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
10530 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
10531 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
10532 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
10533 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
10534 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
10535 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
10536 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 10537 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
10538 | }; |
10539 | \f | |
72d5681a PH |
10540 | enum ada_primitive_types { |
10541 | ada_primitive_type_int, | |
10542 | ada_primitive_type_long, | |
10543 | ada_primitive_type_short, | |
10544 | ada_primitive_type_char, | |
10545 | ada_primitive_type_float, | |
10546 | ada_primitive_type_double, | |
10547 | ada_primitive_type_void, | |
10548 | ada_primitive_type_long_long, | |
10549 | ada_primitive_type_long_double, | |
10550 | ada_primitive_type_natural, | |
10551 | ada_primitive_type_positive, | |
10552 | ada_primitive_type_system_address, | |
10553 | nr_ada_primitive_types | |
10554 | }; | |
6c038f32 PH |
10555 | |
10556 | static void | |
d4a9a881 | 10557 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
10558 | struct language_arch_info *lai) |
10559 | { | |
d4a9a881 | 10560 | const struct builtin_type *builtin = builtin_type (gdbarch); |
72d5681a | 10561 | lai->primitive_type_vector |
d4a9a881 | 10562 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a PH |
10563 | struct type *); |
10564 | lai->primitive_type_vector [ada_primitive_type_int] = | |
9a76efb6 | 10565 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10566 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10567 | 0, "integer", (struct objfile *) NULL); |
72d5681a | 10568 | lai->primitive_type_vector [ada_primitive_type_long] = |
9a76efb6 | 10569 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10570 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10571 | 0, "long_integer", (struct objfile *) NULL); |
72d5681a | 10572 | lai->primitive_type_vector [ada_primitive_type_short] = |
9a76efb6 | 10573 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10574 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10575 | 0, "short_integer", (struct objfile *) NULL); |
61ee279c PH |
10576 | lai->string_char_type = |
10577 | lai->primitive_type_vector [ada_primitive_type_char] = | |
6c038f32 PH |
10578 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10579 | 0, "character", (struct objfile *) NULL); | |
72d5681a | 10580 | lai->primitive_type_vector [ada_primitive_type_float] = |
ea06eb3d | 10581 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10582 | gdbarch_float_bit (gdbarch)/ TARGET_CHAR_BIT, |
6c038f32 | 10583 | 0, "float", (struct objfile *) NULL); |
72d5681a | 10584 | lai->primitive_type_vector [ada_primitive_type_double] = |
ea06eb3d | 10585 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10586 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10587 | 0, "long_float", (struct objfile *) NULL); |
72d5681a | 10588 | lai->primitive_type_vector [ada_primitive_type_long_long] = |
9a76efb6 | 10589 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10590 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10591 | 0, "long_long_integer", (struct objfile *) NULL); |
72d5681a | 10592 | lai->primitive_type_vector [ada_primitive_type_long_double] = |
ea06eb3d | 10593 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10594 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10595 | 0, "long_long_float", (struct objfile *) NULL); |
72d5681a | 10596 | lai->primitive_type_vector [ada_primitive_type_natural] = |
9a76efb6 | 10597 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10598 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10599 | 0, "natural", (struct objfile *) NULL); |
72d5681a | 10600 | lai->primitive_type_vector [ada_primitive_type_positive] = |
9a76efb6 | 10601 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10602 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10603 | 0, "positive", (struct objfile *) NULL); |
72d5681a | 10604 | lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void; |
6c038f32 | 10605 | |
72d5681a | 10606 | lai->primitive_type_vector [ada_primitive_type_system_address] = |
6c038f32 PH |
10607 | lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", |
10608 | (struct objfile *) NULL)); | |
72d5681a PH |
10609 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
10610 | = "system__address"; | |
6c038f32 | 10611 | } |
6c038f32 PH |
10612 | \f |
10613 | /* Language vector */ | |
10614 | ||
10615 | /* Not really used, but needed in the ada_language_defn. */ | |
10616 | ||
10617 | static void | |
10618 | emit_char (int c, struct ui_file *stream, int quoter) | |
10619 | { | |
10620 | ada_emit_char (c, stream, quoter, 1); | |
10621 | } | |
10622 | ||
10623 | static int | |
10624 | parse (void) | |
10625 | { | |
10626 | warnings_issued = 0; | |
10627 | return ada_parse (); | |
10628 | } | |
10629 | ||
10630 | static const struct exp_descriptor ada_exp_descriptor = { | |
10631 | ada_print_subexp, | |
10632 | ada_operator_length, | |
10633 | ada_op_name, | |
10634 | ada_dump_subexp_body, | |
10635 | ada_evaluate_subexp | |
10636 | }; | |
10637 | ||
10638 | const struct language_defn ada_language_defn = { | |
10639 | "ada", /* Language name */ | |
10640 | language_ada, | |
6c038f32 PH |
10641 | range_check_off, |
10642 | type_check_off, | |
10643 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
10644 | that's not quite what this means. */ | |
6c038f32 PH |
10645 | array_row_major, |
10646 | &ada_exp_descriptor, | |
10647 | parse, | |
10648 | ada_error, | |
10649 | resolve, | |
10650 | ada_printchar, /* Print a character constant */ | |
10651 | ada_printstr, /* Function to print string constant */ | |
10652 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 PH |
10653 | ada_print_type, /* Print a type using appropriate syntax */ |
10654 | ada_val_print, /* Print a value using appropriate syntax */ | |
10655 | ada_value_print, /* Print a top-level value */ | |
10656 | NULL, /* Language specific skip_trampoline */ | |
10657 | NULL, /* value_of_this */ | |
10658 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ | |
10659 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
10660 | ada_la_decode, /* Language specific symbol demangler */ | |
10661 | NULL, /* Language specific class_name_from_physname */ | |
10662 | ada_op_print_tab, /* expression operators for printing */ | |
10663 | 0, /* c-style arrays */ | |
10664 | 1, /* String lower bound */ | |
6c038f32 | 10665 | ada_get_gdb_completer_word_break_characters, |
72d5681a | 10666 | ada_language_arch_info, |
e79af960 | 10667 | ada_print_array_index, |
41f1b697 | 10668 | default_pass_by_reference, |
6c038f32 PH |
10669 | LANG_MAGIC |
10670 | }; | |
10671 | ||
d2e4a39e | 10672 | void |
6c038f32 | 10673 | _initialize_ada_language (void) |
14f9c5c9 | 10674 | { |
6c038f32 PH |
10675 | add_language (&ada_language_defn); |
10676 | ||
10677 | varsize_limit = 65536; | |
6c038f32 PH |
10678 | |
10679 | obstack_init (&symbol_list_obstack); | |
10680 | ||
10681 | decoded_names_store = htab_create_alloc | |
10682 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
10683 | NULL, xcalloc, xfree); | |
6b69afc4 JB |
10684 | |
10685 | observer_attach_executable_changed (ada_executable_changed_observer); | |
14f9c5c9 | 10686 | } |